WO2023240462A1 - Battery and electric device - Google Patents

Battery and electric device Download PDF

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Publication number
WO2023240462A1
WO2023240462A1 PCT/CN2022/098729 CN2022098729W WO2023240462A1 WO 2023240462 A1 WO2023240462 A1 WO 2023240462A1 CN 2022098729 W CN2022098729 W CN 2022098729W WO 2023240462 A1 WO2023240462 A1 WO 2023240462A1
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WO
WIPO (PCT)
Prior art keywords
battery
heat exchange
thermal management
battery cell
management component
Prior art date
Application number
PCT/CN2022/098729
Other languages
French (fr)
Chinese (zh)
Inventor
陈佳华
肖得隽
李全国
刘倩
孙婧轩
喻春鹏
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to CN202280059102.3A priority Critical patent/CN117981144A/en
Priority to PCT/CN2022/098729 priority patent/WO2023240462A1/en
Publication of WO2023240462A1 publication Critical patent/WO2023240462A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of batteries, and in particular to a battery and an electrical device.
  • Batteries are widely used in electronic devices, such as mobile phones, laptops, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools, etc.
  • the present application provides a battery and an electrical device, which can improve the cycle performance of the battery.
  • embodiments of the present application provide a battery, including a first battery cell, a battery unit and a thermal management component.
  • the battery unit and the first battery cell are stacked along a first direction.
  • the battery unit includes a plurality of second battery cells arranged along a second direction that intersects the first direction, and a gap is provided between at least two second battery cells of the battery unit in the second direction.
  • At least part of the thermal management component is received in the void and used to exchange heat with the first battery cell.
  • the thermal management component is accommodated in the gap between the second battery cells to improve space utilization, make the battery structure more compact, and thereby increase the energy density of the battery.
  • the thermal management component can adjust the temperature of the first battery cell, thereby improving the cycle performance of the battery.
  • the portion of the thermal management component accommodated in the gap can also limit and buffer the second battery cell, thereby reducing the risk of the second battery cell being displaced in the second direction.
  • the first battery cell and the second battery cell have different shapes, which can make the shape and size of the gap more flexible.
  • the first battery cell is a square battery cell
  • the second battery cell is a cylindrical battery cell.
  • the gaps between the cylindrical battery cells can provide space for thermal management components, thereby improving space utilization and improving the cycle performance of the prismatic battery cells.
  • the first direction is perpendicular to the second direction.
  • the size of the second battery cell along the third direction is greater than the size of the second battery cell along the first direction
  • the size of the second battery cell along the third direction is greater than the size of the second battery cell along the second direction.
  • the size of the direction, the first direction, the second direction and the third direction are perpendicular to each other.
  • the void has a larger size in the third direction to provide more space for thermal management components.
  • the first battery cell includes a first housing and the second battery cell includes a second housing.
  • the size of the first housing along the third direction is equal to the size of the second housing along the third direction, which can improve the consistency of the size of the first battery cell and the second battery cell in the third direction, and facilitate the realization of the first battery cell. and the arrangement of the second battery cells.
  • the first battery cell has two first surfaces oppositely arranged along a first direction, and a plurality of second battery cells of the battery unit are connected to the first surface.
  • the thermal management component is attached to the first surface.
  • a plurality of second battery cells are connected to the first surface, which can improve the overall structural strength of the battery.
  • the thermal management component exchanges heat with the first surface to regulate the temperature of the first battery cell.
  • the first surface is planar. At least part of the outer surface of the second battery cell is an arc-shaped surface, and the arc-shaped surface is used to connect with the first surface. In the second direction, a gap is formed between the arcuate surfaces of two adjacent second battery cells. The arcuate surface is connected to the first surface, which can reduce the heat transfer area between the first battery cell and the second battery cell, and reduce the heat transfer rate between the first battery cell and the second battery cell, When a certain battery cell experiences thermal runaway, the risk of heat diffusion is reduced and the safety of the battery is improved.
  • the thermal management component is bonded to the first surface to stably connect the thermal management component to the first battery cell and achieve stable heat exchange between the thermal management component and the first battery cell.
  • the portion of the thermal management component housed in the void may also be used to exchange heat with the second battery cell.
  • the thermal management component can simultaneously adjust the temperature of the first battery cell and the second battery cell to improve the consistency of cycle performance of the first battery cell and the second battery cell.
  • the thermal management component is connected to the second battery cell through thermally conductive glue.
  • the thermal management component exchanges heat with the second battery cell through thermal conductive glue to adjust the temperature of the second battery cell.
  • the thermal management component can also limit the position of the second battery cell through thermally conductive glue, thereby reducing the risk of the second battery cell being displaced when subjected to external impact.
  • any two adjacent second battery cells are connected to each other to improve the overall structural strength of the battery unit and reduce the risk of the second battery cells shaking.
  • the number of second cells of the battery unit is at least three.
  • a gap is provided between any two adjacent second battery cells.
  • the thermal management component includes a plurality of first heat exchange tubes arranged in the second direction.
  • a first heat exchange tube is provided in each gap.
  • the thermal management component can flexibly set the first heat exchange tube according to the size and position of the gap.
  • a first heat exchange tube of the thermal management component is disposed in each void.
  • the thermal management component includes a plurality of second heat exchange tubes for communicating the plurality of first heat exchange tubes.
  • the plurality of second heat exchange tubes connect the plurality of first heat exchange tubes so that the heat exchange medium can flow in the plurality of first heat exchange tubes.
  • a plurality of first heat exchange tubes are located between two second heat exchange tubes, and both ends of each first heat exchange tube are respectively connected to the two second heat exchange tubes.
  • Two second heat exchange tubes connect multiple first heat exchange tubes in parallel.
  • a plurality of first heat exchange tubes and a plurality of second heat exchange tubes are connected alternately.
  • the plurality of second heat exchange tubes connect the plurality of first heat exchange tubes in series.
  • the first heat exchange tube extends along a third direction, and the first direction, the second direction and the third direction are two perpendicular to each other.
  • the cross-section of the first heat exchange tube is triangular, trapezoidal, rectangular or semicircular.
  • the first battery cell and two adjacent second battery cells surround the gap, and the cross-sectional shape of the first heat exchange tube matches the cross-sectional shape of the gap.
  • the shape of the first heat exchange tube is set according to the shape of the gap, which can increase the heat exchange area between the first heat exchange tube and the first battery cell and the heat exchange area between the first heat exchange tube and the second battery cell. Heat exchange area to improve heat exchange efficiency.
  • the material of the thermal management component includes at least one of copper, aluminum alloy, and stainless steel. Materials such as copper, aluminum alloy and stainless steel have good thermal conductivity.
  • first battery cells there are multiple first battery cells and there are multiple battery units.
  • a plurality of first battery cells and a plurality of battery units are stacked along a first direction.
  • the thermal management component is at least used to exchange heat with the first battery cell adjacent to the battery unit. Stacking multiple battery units and multiple first battery cells can increase the capacity of the battery.
  • the plurality of first battery cells and the plurality of battery units are alternately arranged along the first direction.
  • Each first battery cell is disposed adjacent to the battery unit, and the thermal management component accommodated in the gap of the battery unit can exchange heat with the first battery cell adjacent to the battery unit.
  • Each first battery cell is Heat can be exchanged with the thermal management component, which can improve temperature consistency of the plurality of first battery cells.
  • a thermal management component is provided between any two adjacent first battery cells.
  • Each first battery cell can exchange heat with the thermal management component, which can improve the temperature consistency of the plurality of first battery cells.
  • thermal management components there are multiple thermal management components, and the multiple thermal management components are arranged along the first direction.
  • the plurality of thermal management components may exchange heat with the plurality of first battery cells, thereby improving temperature consistency of the plurality of first battery cells.
  • the battery further includes a manifold pipeline, which is used to connect multiple thermal management components to facilitate the flow of the heat exchange medium in the multiple thermal management components.
  • the manifold pipeline includes an inlet pipe and an outlet pipe, and each thermal management component is connected to the inlet pipe and the outlet pipe, so that multiple thermal management components are arranged in parallel.
  • the inflow pipe and the outflow pipe connect multiple thermal management components in parallel, which can reduce the temperature difference of the heat exchange medium in the multiple thermal management components and improve the temperature consistency of the multiple first battery cells.
  • the battery further includes a frame structure, the frame structure has a receiving cavity, and the battery unit and the first battery cell are received in the receiving cavity and installed on the frame structure.
  • the inlet pipe and the outlet pipe are connected to the frame structure.
  • the frame structure can support and fix the first battery cell and the second battery cell to reduce the risk of dislocation and shaking of the first battery cell and the second battery cell.
  • the frame structure can fix the inlet and outlet pipes to reduce the shaking of the inlet and outlet pipes and reduce the risk of leakage of the heat exchange medium due to damage to the inlet and outlet pipes. , improve safety.
  • the battery cell and the first battery cell form a battery pack.
  • the frame structure includes two end plates and a plurality of side plates. The two end plates are respectively located at both ends of the battery pack along the first direction. Each side plate connects the two end plates. The inlet pipe and the outlet pipe are connected to the side plate.
  • the inlet pipe and the outlet pipe are respectively connected to two different side plates to simplify the structure of a single side plate.
  • the plurality of side plates include two first side plates and a second side plate.
  • the two first side plates are respectively located on both sides of the battery pack, and the arrangement direction of the two first side plates is perpendicular to the first side plate.
  • One direction; the second side plate connects the two first side plates and the two end plates.
  • the inlet pipe and the outflow pipe are respectively connected to the two first side plates; or, one of the inlet pipe and the outflow pipe is connected to the first side plate, and the other is connected to the second side plate.
  • the battery further includes an inflow connector and an outflow connector provided on the end plate, the inflow connector is used to communicate with the inflow pipe, and the outflow connector is used to communicate with the outflow pipe.
  • the inflow joint and the outflow joint can be used to communicate with a supply device for providing heat exchange medium outside the battery, so that the heat exchange medium can circulate between the plurality of thermal management components and the supply device.
  • the inflow joint and the outflow joint are provided on the same end plate, which facilitates the connection between the supply device for providing heat exchange medium and the inflow joint and the outflow joint, and helps to simplify the connection pipeline of the supply device. .
  • the battery includes a plurality of battery columns, each battery column including first battery cells and battery cells stacked along a first direction.
  • the arrangement direction of the plurality of battery columns is perpendicular to the first direction and parallel or perpendicular to the second direction.
  • the first direction is perpendicular to the second direction. Arranging multiple first battery cells and multiple battery units into multiple columns can increase the energy density of the battery and simplify the structure of the battery.
  • the first battery cells of the plurality of battery columns are opposite to each other along the arrangement direction, and the battery cells of the plurality of battery columns are opposite to each other along the arrangement direction.
  • the voids in the battery cells of each battery column can be used to accommodate thermal management components.
  • the battery cells of the plurality of battery columns are opposite to each other along the arrangement direction, which facilitates the connection of multiple parts of the thermal management component provided in the plurality of battery columns.
  • the arrangement direction of the plurality of battery columns is parallel to the second direction.
  • the thermal management component includes a plurality of first heat exchange tubes arranged along the second direction, and at least part of each first heat exchange tube is accommodated in the gap of the battery unit.
  • the plurality of first heat exchange tubes of the thermal management component are used to exchange heat with the first battery cells of the plurality of battery columns.
  • the plurality of first heat exchange tubes of the thermal management component can simultaneously exchange heat with the first battery cells of multiple battery rows, which can simplify the structure of the thermal management component.
  • the arrangement direction of the plurality of battery columns is perpendicular to the second direction.
  • the thermal management component includes a plurality of first heat exchange tubes arranged along the second direction, and at least part of each first heat exchange tube is accommodated in the gap of the battery unit. Each first heat exchange tube is used to exchange heat with the first battery cells of the plurality of battery rows. Each first heat exchange tube of the thermal management component can simultaneously exchange heat with the first battery cells of multiple battery rows, which can simplify the structure of the thermal management component.
  • embodiments of the present application provide an electrical device, including the battery according to any embodiment of the first aspect, and the battery is used to provide electric energy.
  • Figure 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • FIG. 2 is an exploded schematic diagram of a battery provided by some embodiments of the present application.
  • FIG. 3 is a schematic structural diagram of a battery provided by some embodiments of the present application.
  • Figure 4 is a schematic structural diagram of a part of the battery shown in Figure 3;
  • Figure 5 is a schematic cross-sectional view of the first battery cell shown in Figure 4.
  • Figure 6 is a schematic cross-sectional view of the second battery cell shown in Figure 4.
  • Figure 7 is a schematic cross-sectional view of the battery shown in Figure 4.
  • Figure 8 is a schematic structural diagram of the first battery cell and thermal management component shown in Figure 4.
  • FIG. 9 is a schematic structural diagram of the thermal management component shown in Figure 8.
  • Figure 10 is a schematic structural diagram of a thermal management component of a battery provided by other embodiments of the present application.
  • Figure 11 is a schematic cross-sectional view of the first heat exchange tube of the thermal management component of the battery provided by other embodiments of the present application;
  • Figure 12 is a schematic top view of a battery provided by other embodiments of the present application.
  • Figure 13 is an exploded schematic diagram of a battery provided by other embodiments of the present application, in which part of the first battery cell and the second battery cell are omitted;
  • Figure 14 is a schematic structural diagram of the thermal management components and manifold pipelines of the battery provided by other embodiments of the present application;
  • Figure 15 is a schematic structural diagram of a battery provided by other embodiments of the present application.
  • Figure 16 is a schematic three-dimensional structural diagram of a part of the battery shown in Figure 15;
  • FIG 17 is a schematic structural diagram of the thermal management component shown in Figure 16;
  • Figure 18 is an exploded schematic diagram of a battery provided by other embodiments of the present application, in which part of the first battery cell and the second battery cell are omitted;
  • Figure 19 is a schematic structural diagram of a battery provided by other embodiments of the present application.
  • FIG. 20 is a schematic structural diagram of the first battery cell and thermal management component of FIG. 18 .
  • Inflow Pipe 52, outlet pipe; 60, frame structure; 61, end plate; 62, first side plate; 63, second side plate; 70, battery pack; 81, inlet connector; 82, outlet connector; 90 , battery row; G, gap; X, first direction; Y, second direction; Z, third direction.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
  • connection should be understood in a broad sense.
  • connection can be a fixed connection, It can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediate medium; it can be internal communication between two components.
  • connection can be a fixed connection
  • connection can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediate medium; it can be internal communication between two components.
  • connection can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediate medium; it can be internal communication between two components.
  • “Plural” appearing in this application means two or more (including two).
  • parallel includes not only the absolutely parallel situation, but also the roughly parallel situation that is conventionally recognized in engineering; at the same time, the term “perpendicular” includes not only the absolutely vertical situation, but also the roughly parallel situation that is conventionally recognized in engineering. vertical situation.
  • battery cells may include lithium-ion battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc.
  • the embodiments of this application are not limited to this. .
  • the battery mentioned in the embodiments of this application refers to a single physical module including multiple battery cells to provide higher voltage and capacity.
  • a battery may generally include a case for enclosing one or more battery cells.
  • the box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.
  • the battery cell includes a casing and an electrode assembly contained in the casing.
  • the electrode assembly includes a positive electrode piece, a negative electrode piece and a separator. Battery cells mainly rely on the movement of metal ions between the positive and negative electrodes to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer.
  • the positive electrode active material layer is coated on the surface of the positive electrode current collector.
  • the positive electrode current collector includes a positive electrode current collector and a positive electrode tab.
  • the positive electrode current collector is coated with the positive electrode active material layer.
  • the positive electrode tab is not coated with the positive electrode active material layer.
  • the material of the cathode current collector can be aluminum, and the cathode active material layer includes cathode active materials.
  • the cathode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganate, etc.
  • the negative electrode piece includes a negative electrode current collector and a negative electrode active material layer.
  • the negative electrode active material layer is coated on the surface of the negative electrode current collector.
  • the negative electrode current collector includes a negative electrode current collector and a negative electrode tab.
  • the negative electrode current collector is coated with the negative electrode active material layer.
  • the negative electrode tab is not coated with the negative electrode active material layer.
  • the negative electrode current collector may be made of copper, and the negative electrode active material layer may include a negative electrode active material.
  • the negative electrode active material may be carbon or silicon.
  • the material of the isolator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.
  • Batteries will show different electrical cycle performance under different ambient temperatures. When the ambient temperature is too high or too low, the cycle performance of the battery will decrease and even its service life will be shortened. In order to ensure the safety, stable performance and excellent operation of new energy vehicles, effective thermal management of the battery must be carried out to control the battery to always operate within a suitable temperature range.
  • the thermal management components can be used to exchange heat with the multiple battery cells to effectively manage the heat of the battery and make the battery cells work at the appropriate temperature. within the temperature range.
  • the thermal management components would occupy a larger space, resulting in a low energy density of the battery.
  • embodiments of the present application provide a battery in which a first battery cell and a plurality of second battery cells are mixedly arranged, and the gaps between the second battery cells are used to provide thermal management components. Improve the cycle performance of the first battery cell and increase the space utilization and energy density of the battery.
  • Electrical devices can be vehicles, cell phones, portable devices, laptops, ships, spacecraft, electric toys and power tools, etc.
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.
  • spacecraft include aircraft, rockets, space shuttles, spaceships, etc.
  • electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.
  • electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, planers and more.
  • Electric drills Electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, planers and more.
  • the following embodiments take the electrical device as a vehicle as an example.
  • Figure 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • a battery 2 is provided inside the vehicle 1 , and the battery 2 can be provided at the bottom, head, or tail of the vehicle 1 .
  • the battery 2 may be used to power the vehicle 1 , for example, the battery 2 may be used as an operating power source for the vehicle 1 .
  • the vehicle 1 may also include a controller 3 and a motor 4.
  • the controller 3 is used to control the battery 2 to provide power to the motor 4, for example, to meet the power requirements for starting, navigation and driving of the vehicle 1.
  • the battery 2 can not only be used as the operating power source of the vehicle 1, but also can be used as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.
  • Figure 2 is an exploded schematic diagram of a battery provided by some embodiments of the present application.
  • the battery 2 includes a case 5 and a battery cell (not shown in FIG. 2 ), and the battery cell is accommodated in the case 5 .
  • the box 5 is used to accommodate battery cells, and the box 5 can be of various structures.
  • the box body 5 may include a first box body part 5a and a second box body part 5b.
  • the first box body part 5a and the second box body part 5b cover each other.
  • the first box body part 5a and the second box body part 5b cover each other.
  • the two box portions 5b jointly define an accommodating space 5c for accommodating battery cells.
  • the second box part 5b can be a hollow structure with one end open, and the first box part 5a is a plate-like structure.
  • the first box part 5a is covered with the opening side of the second box part 5b to form a receiving space 5c.
  • the box body 5; the first box body part 5a and the second box body part 5b can also be a hollow structure with one side open, and the opening side of the first box body part 5a is covered with the opening side of the second box body part 5b , to form a box 5 having an accommodation space 5c.
  • the first box part 5a and the second box part 5b can be in various shapes, such as cylinder, rectangular parallelepiped, etc.
  • a sealing member may also be provided between the first box part 5a and the second box part 5b, such as sealant, sealing ring, etc. .
  • the first box part 5a can also be called an upper box cover, and the second box part 5b can also be called a lower box.
  • the multiple battery cells there are multiple battery cells, and the multiple battery cells can be connected in series, in parallel, or in mixed connection.
  • Mixed connection means that the multiple battery cells are connected in series and in parallel.
  • Multiple battery cells can be directly connected in series or parallel or mixed together, and then the whole composed of multiple battery cells can be accommodated in the box 5; of course, multiple battery cells can also be connected in series or parallel first or
  • a battery module 6 is formed by a mixed connection, and multiple battery modules 6 are connected in series, parallel, or mixed to form a whole, and are accommodated in the box 5 .
  • FIG. 3 is a schematic structural diagram of a battery provided by some embodiments of the present application
  • Figure 4 is a schematic structural diagram of a part of the battery shown in Figure 3
  • Figure 5 is a schematic cross-sectional view of the first battery cell shown in Figure 4
  • Figure 6 is a schematic cross-sectional view of the second battery cell
  • FIG. 7 is a schematic cross-sectional view of the battery shown in FIG. 4 .
  • a battery 2 that includes a first battery cell 10 , a battery unit 20 and a thermal management component 30 .
  • the battery unit 20 is stacked with the first battery unit 10 along a first direction X, and the battery unit 20 includes a plurality of second battery units 40 arranged along a second direction Y that intersects the first direction X.
  • a gap G is provided between at least two second battery cells 40 of the battery unit 20 .
  • At least part of the thermal management component 30 is accommodated in the gap G and used to exchange heat with the first battery cell 10 .
  • first battery cell 10 There may be one first battery cell 10 or multiple first battery cells 10 , which is not limited in this embodiment. For example, there are multiple first battery cells 10 .
  • the battery unit 20 may be one or multiple, which is not limited in this embodiment. By way of example, there are a plurality of battery units 20 .
  • first battery cells 10 and a plurality of battery cells 20 there are a plurality of first battery cells 10 and a plurality of battery cells 20 , and the plurality of battery cells 20 and the plurality of first battery cells 10 are stacked along the first direction X.
  • This example does not limit the order in which the battery units 20 and the first battery cells 10 are stacked.
  • multiple battery units 20 and multiple first battery cells 10 may be alternately arranged along the first direction X, or there may be multiple The battery units 20 are continuously arranged, and the plurality of first battery cells 10 are arranged continuously.
  • the battery units 20 and the first battery cells 10 may also be arranged in other arrangements.
  • the number of second battery cells 40 in the plurality of battery units 20 may be the same or different.
  • the second direction Y and the first direction X are not parallel to each other, and form an included angle therebetween.
  • the first battery cell 10 and the second battery cell 40 may use the same chemical system, or they may use different chemical systems.
  • the chemical system targets the positive active material of the battery cell.
  • the first battery cell 10 may be a sodium ion battery cell, a lithium ion battery cell, a magnesium ion battery cell or other metal ion battery cell
  • the second battery cell 40 may be a sodium ion battery cell.
  • Lithium-ion battery cells include, but are not limited to, lithium nickel cobalt manganese system battery cells, lithium iron phosphate battery cells, lithium cobalt oxide battery cells, lithium manganese iron phosphate battery cells, and lithium nickel oxide battery cells. Or battery cells of other systems.
  • the gap G separates at least part of one second battery cell 40 from at least part of the other second battery cell 40 .
  • at least part of the surface of one second battery cell 40 facing the other second battery cell 40 along the second direction Y is spaced apart from the other second battery cell 40 to form the gap G.
  • the gap G only separates a part of one second battery cell 40 from the other second battery cell 40 in the second direction Y. ; That is to say, two adjacent second battery cells 40 may be in contact. In other examples, among two adjacent second battery cells 40, the gap G completely separates one second battery cell 40 from another second battery cell 40 in the second direction Y, That is to say, two adjacent second battery cells 40 are not in contact.
  • the thermal management component 30 may be used to exchange heat with the first battery cell 10 to adjust the temperature of the first battery cell 10 .
  • the thermal management component 30 may only be used to exchange heat with the first battery cell 10 , or may simultaneously exchange heat with the first battery cell 10 and the second battery cell 40 .
  • the thermal management component 30 may cool the first battery cell 10 to lower the temperature of the first battery cell 10 .
  • the thermal management component 30 may heat the first battery cell 10 to increase the temperature of the first battery cell 10 .
  • the thermal management component 30 is provided with a flow channel for the heat exchange medium to flow.
  • the heat exchange medium may be a liquid or a gas, for example, the heat exchange medium may be water.
  • a part of the thermal management component 30 may be accommodated in the gap G, or the entire thermal management component 30 may be accommodated in the gap G.
  • the thermal management component 30 may fill part of the gap G, or may fill the gap G entirely.
  • the thermal management component 30 is accommodated in the gap G between the second battery cells 40 to improve space utilization, make the structure of the battery 2 more compact, and thereby increase the energy density of the battery 2 .
  • the thermal management component 30 can adjust the temperature of the first battery cell 10 to improve the cycle performance of the battery 2 .
  • the portion of the thermal management component 30 accommodated in the gap G can also limit and buffer the second battery cell 40 to reduce the risk of the second battery cell 40 being displaced in the second direction Y.
  • each second battery cell 40 in the first direction X, at least partially overlaps the first battery cell 10 . Since each second battery cell 40 has a portion that overlaps the first battery cell 10 in the first direction X, each second battery cell 40 can restrict the first battery cell 10 in the first direction X. deformation to improve the morphology of the first battery cell 10 and increase the overall strength of the battery 2.
  • the size of the first battery cell 10 along the second direction Y is larger than the size of the second battery cell 40 along the second direction Y, so that each second battery cell 40 is aligned with the first battery cell 10 in the first direction.
  • the overlapping portion of X is larger than the size of the second battery cell 40 along the second direction Y, so that each second battery cell 40 is aligned with the first battery cell 10 in the first direction.
  • the first battery cell 10 and the second battery cell 40 have different shapes, which can make the shape and size of the gap G more flexible.
  • the first battery cell 10 may be a square battery cell
  • the second battery cell 40 may be a cylindrical battery cell, a hexagonal prism battery cell, an elliptical column battery cell, or a battery cell of other shapes.
  • the first battery cell 10 is a square battery cell
  • the second battery cell 40 is a cylindrical battery cell.
  • the casing of the square battery cell is generally in the shape of a rectangular parallelepiped, and the casing of the cylindrical battery cell is generally in the shape of a cylinder.
  • Cylindrical battery cells have cylindrical surfaces. When multiple cylindrical battery cells are arranged along the second direction Y, gaps G will be formed between the cylindrical surfaces of adjacent battery cells.
  • the gaps G between the cylindrical battery cells can provide space for the thermal management component 30 , thereby improving space utilization and improving the cycle performance of the prismatic battery cells.
  • the contact between the cylindrical battery cells and the square battery cells is line contact. It can reduce the heat transfer area between cylindrical battery cells and prismatic battery cells, and reduce the heat transfer rate between cylindrical battery cells and prismatic battery cells.
  • the first direction X is perpendicular to the second direction Y.
  • This embodiment does not require the second direction Y to be absolutely perpendicular to the first direction X, and a certain error is allowed.
  • the angle between the second direction Y and the first direction X is 80°-100°, the first direction X can be considered to be perpendicular to the second direction Y.
  • the size D3 of the second battery cell 40 along the third direction Z is greater than the size D1 of the second battery cell 40 along the first direction X, and the size D3 of the second battery cell 40 along the third direction Z Greater than the dimension D2 of the second battery cell 40 along the second direction Y, the first direction X, the second direction Y, and the third direction Z are two perpendicular to each other.
  • the second battery cell 40 is a cylindrical battery cell, and D1 and D2 are equal and are the diameters of the cylindrical battery cells.
  • This embodiment can make the gap G have a larger size in the third direction Z to provide more space for the thermal management component 30 .
  • the first battery cell 10 includes a first housing 11 and a first electrode assembly 12 accommodated in the first housing 11 .
  • the first housing 11 has a hollow structure, and an accommodation cavity for accommodating the first electrode assembly 12 and the electrolyte is formed inside.
  • the first housing 11 can have various shapes.
  • the first housing 11 is in the shape of a rectangular parallelepiped.
  • the first housing 11 includes a first housing 111 and a first end cover 112.
  • the first housing 111 has an opening, and the first end cover 112 is used to cover the opening of the first housing 111.
  • the second battery cell 40 includes a second housing 41 and a second electrode assembly 42 accommodated in the second housing 41 .
  • the second housing 41 has a hollow structure, and an accommodation cavity for accommodating the second electrode assembly 42 and the electrolyte is formed inside.
  • the second housing 41 can have various shapes.
  • the second housing 41 is cylindrical.
  • the second housing 41 includes a second housing 411 and a second end cover 412.
  • the second housing 411 has an opening, and the second end cover 412 is used to cover the opening of the second housing 411.
  • Both the first electrode assembly 12 and the second electrode assembly 42 include a positive electrode piece, a negative electrode piece and a separator, and the separator is used to insulate and isolate the positive electrode piece and the negative electrode piece.
  • the electrode assembly mainly relies on the movement of metal ions between the positive and negative electrode plates to work.
  • the first battery cell 10 includes a first housing 11 and the second battery cell 40 includes a second housing 41 .
  • the size D4 of the first housing 11 along the third direction Z is equal to the size D5 of the second housing 41 along the third direction Z. This can improve the size of the first battery cell 10 and the second battery cell 40 in the third direction Z.
  • the consistency facilitates the arrangement of the first battery cells 10 and the second battery cells 40 .
  • the first battery cell 10 further includes a first electrode terminal 13 and a second electrode terminal 14 disposed on the first housing 11 .
  • One of the first electrode terminal 13 and the second electrode terminal 14 is electrically connected to the positive electrode tab of the first electrode assembly 12 , and the other is electrically connected to the negative electrode tab of the first electrode assembly 12 .
  • the first electrode terminal 13 and the second electrode terminal 14 are used to electrically connect the first electrode assembly 12 with an external circuit to realize charging and discharging of the first electrode assembly 12 .
  • the first electrode terminal 13 and the second electrode terminal 14 may be disposed on the same side of the first housing 11 , or may be disposed on opposite sides of the first housing 11 respectively.
  • the second battery cell 40 further includes a third electrode terminal 43 and a fourth electrode terminal 44 provided on the second housing 41 .
  • One of the third electrode terminal 43 and the fourth electrode terminal 44 is electrically connected to the positive electrode tab of the second electrode assembly 42 , and the other is electrically connected to the negative electrode tab of the second electrode assembly 42 .
  • the third electrode terminal 43 and the fourth electrode terminal 44 are used to electrically connect the second electrode assembly 42 with an external circuit to realize charging and discharging of the second electrode assembly 42 .
  • the third electrode terminal 43 and the fourth electrode terminal 44 may be disposed on the same side of the second housing 41 , or may be disposed on opposite sides of the second housing 41 respectively.
  • the first housing 11 includes two first surfaces 11a oppositely arranged along the first direction X, two second surfaces 11b oppositely arranged along the second direction Y, and two oppositely arranged second surfaces 11b along the third direction Z. a third surface 11c.
  • the first surface 11a, the second surface 11b and the third surface 11c are all flat.
  • the area of the first surface 11a is larger than the area of the second surface 11b, and the area of the first surface 11a is larger than the area of the third surface 11c.
  • the first battery cell 10 adjacent to the battery unit 20 covers the gap G from one side of the gap G along the first direction X.
  • the first battery cell 10 has two first surfaces 11a arranged oppositely along the first direction X, and the plurality of second battery cells 40 of the battery unit 20 are connected to the first surfaces 11a.
  • the thermal management component 30 is connected to the first surface 11a.
  • the second battery cell 40 may be directly connected to the first surface 11a, or may be indirectly connected to the first surface 11a through other structures.
  • the second battery cell 40 is connected to the first surface 11a by abutting, bonding or other means.
  • the thermal management component 30 may be directly connected to the first surface 11a, or may be indirectly connected to the first surface 11a through other structures.
  • the thermal management component 30 and the second battery cell 40 may be connected to only one first surface 11a, or the thermal management component 30 and the second battery may be connected to both first surfaces 11a. Single unit 40.
  • the thermal management component 30 is connected to the larger first surface 11a of the first battery cell 10, which can improve the heat exchange efficiency.
  • the plurality of second battery cells 40 are connected to the first surface 11a, which can improve the overall structural strength of the battery 2.
  • the thermal management component 30 exchanges heat with the first surface 11a to adjust the temperature of the first battery cell 10.
  • first surface 11a is planar. At least part of the outer surface 40a of the second battery cell 40 is an arcuate surface, and the arcuate surface is used to connect with the first surface 11a. In the second direction Y, a gap G is formed between the arcuate surfaces of two adjacent second battery cells 40 .
  • the arc surface can be an elliptical arc surface, a cylindrical surface, a sphere or other arc surface.
  • the arc surface is a cylindrical surface.
  • the arcuate surface may directly contact the first surface 11a, or may be connected to the first surface 11a through other structures.
  • the curved surface may be bonded to the first surface 11a through colloid.
  • the arcuate surface contacts the first surface 11a, the two are approximately in line contact or point contact.
  • the arcuate surface is connected to the first surface 11a, which can reduce the distance between the first battery cell 10 and the second battery.
  • the heat transfer area between the cells 40 reduces the heat transfer rate between the first battery cell 10 and the second battery cell 40. When a certain battery cell experiences thermal runaway, it reduces the risk of heat diffusion and improves battery performance. 2 security.
  • the thermal management component 30 is bonded to the first surface 11 a to stably connect the thermal management component 30 to the first battery cell 10 and achieve stable heat exchange between the thermal management component 30 and the first battery cell 10 .
  • the thermal management component 30 is bonded to the first surface 11a through thermally conductive glue.
  • the portion of the thermal management component 30 accommodated in the gap G may also be used to exchange heat with the second battery cell 40 .
  • the thermal management component 30 can simultaneously adjust the temperatures of the first battery cell 10 and the second battery cell 40 to improve the consistency of cycle performance of the first battery cell 10 and the second battery cell 40 .
  • the thermal management component 30 is connected to the second battery cell 40 through thermally conductive glue.
  • the thermal management component 30 exchanges heat with the second battery cell 40 through thermal conductive glue to adjust the temperature of the second battery cell 40 .
  • the thermal management component 30 can also limit the position of the second battery cell 40 through thermally conductive glue, so as to reduce the risk of the second battery cell 40 being deflected when subjected to external impact.
  • the thermally conductive adhesive has certain elasticity. When the battery 2 is impacted by an external impact, the thermally conductive adhesive can elastically deform to play a buffering role and reduce the risk of damage to the second battery cell 40 .
  • any two adjacent second battery cells 40 are connected to each other. This embodiment can improve the overall structural strength of the battery unit 20 and reduce the risk of the second battery unit 40 shaking.
  • any two adjacent second battery cells 40 are bonded by colloid.
  • the first battery cell 10 is a lithium-ion battery cell
  • the second battery cell 40 is a sodium-ion battery cell.
  • lithium-ion battery cells Compared with lithium-ion battery cells, sodium-ion battery cells have better low-temperature resistance, needle puncture resistance, extrusion resistance and other safety properties. Compared with sodium-ion battery cells, lithium-ion battery cells have higher energy density.
  • the first battery cell 10 is a lithium-ion battery cell to ensure the energy density of the battery 2 .
  • the second battery cell 40 uses a sodium ion battery cell to reduce the risk of failure of the second battery cell 40 when it is squeezed by the first battery cell 10 .
  • the energy density and safety of the battery 2 can be balanced by assembling lithium-ion battery cells and sodium-ion battery cells into a group.
  • the first battery cell 10 is a ternary lithium battery cell
  • the second battery cell 40 is a sodium ion battery cell or a lithium iron phosphate battery cell.
  • ternary lithium battery cells Compared with sodium-ion battery cells and lithium iron phosphate battery cells, ternary lithium battery cells have higher energy density. Compared with ternary lithium battery cells, sodium-ion battery cells and lithium iron phosphate battery cells are safer.
  • all the second battery cells 40 may be sodium-ion battery cells, or all the second battery cells 40 may be lithium iron phosphate battery cells, or part of the second battery cells 40 may be.
  • the second battery cells 40 are sodium ion battery cells, and part of the second battery cells 40 are lithium iron phosphate battery cells.
  • the first battery cell 10 is a ternary lithium battery cell to ensure the energy density of the battery 2 .
  • the second battery cell 40 uses a sodium ion battery cell or a lithium iron phosphate battery cell to reduce the risk of failure of the second battery cell 40 when it is squeezed by the first battery cell 10 . This embodiment can balance the energy density and safety of the battery 2 .
  • FIG. 8 is a schematic structural diagram of the first battery cell 10 and the thermal management component 30 shown in FIG. 4 ;
  • FIG. 9 is a schematic structural diagram of the thermal management component 30 shown in FIG. 8 .
  • the number of second battery cells 40 of the battery unit 20 is at least three.
  • a gap G is provided between any two adjacent second battery cells 40.
  • the heat exchange area between the thermal management component 30 and the first battery cell 10 can be increased, thereby improving the heat exchange efficiency.
  • the thermal management component 30 includes a plurality of first heat exchange tubes 31 arranged along the second direction Y.
  • a first heat exchange tube 31 is provided in each gap G.
  • One first heat exchange tube 31 may be provided in each gap G, or multiple first heat exchange tubes 31 may be provided simultaneously.
  • the first heat exchange tube 31 may be entirely accommodated in the corresponding gap G, or may be only partially accommodated in the corresponding gap G.
  • Each first heat exchange tube 31 has a flow channel inside for the heat exchange medium to flow.
  • the thermal management component 30 of this embodiment can flexibly arrange the first heat exchange tube 31 according to the size and position of the gap G.
  • each gap G is provided with a first heat exchange tube 31 of the thermal management component 30 , which can reduce the number of first heat exchange tubes 31 and simplify the structure of the thermal management component 30 .
  • the thermal management component 30 includes a plurality of second heat exchange tubes 32 for communicating the plurality of first heat exchange tubes 31 .
  • the plurality of second heat exchange tubes 32 connect the plurality of first heat exchange tubes 31 so that the heat exchange medium can flow in the plurality of first heat exchange tubes 31 .
  • a plurality of first heat exchange tubes 31 and a plurality of second heat exchange tubes 32 are connected alternately.
  • Two adjacent first heat exchange tubes 31 are connected through a second heat exchange tube 32 .
  • the plurality of second heat exchange tubes 32 connect the plurality of first heat exchange tubes 31 in series.
  • the first heat exchange tube 31 and the second heat exchange tube 32 may be an integrally formed structure or a separate structure.
  • a plurality of first heat exchange tubes 31 and a plurality of second heat exchange tubes 32 are formed by bending a tube body multiple times.
  • the first heat exchange tube 31 and the second heat exchange tube 32 are two components provided separately, and the two are integrated by welding, joint connection or other means.
  • the first heat exchange tube 31 extends along the third direction Z, and the first direction X, the second direction Y, and the third direction Z are two perpendicular to each other.
  • the material of the thermal management component 30 includes at least one of copper, aluminum alloy, and stainless steel. Materials such as copper, aluminum alloy and stainless steel have good thermal conductivity.
  • FIG. 10 is a schematic structural diagram of the thermal management component 30 of the battery 2 provided by other embodiments of the present application.
  • two second heat exchange tubes 32 are provided, and the two second heat exchange tubes 32 are spaced apart.
  • the plurality of first heat exchange tubes 31 are located between the two second heat exchange tubes 32, and both ends of each first heat exchange tube 31 are respectively connected to the two second heat exchange tubes 32.
  • the two second heat exchange tubes 32 connect the plurality of first heat exchange tubes 31 in parallel.
  • the cross section of the first heat exchange tube 31 is triangular, trapezoidal, rectangular, semicircular or other shapes.
  • the cross section of the first heat exchange tube 31 refers to a cross section perpendicular to the axial direction of the first heat exchange tube 31 .
  • the first heat exchange tube 31 extends along the third direction Z, and the cross section of the first heat exchange tube 31 is perpendicular to the third direction Z.
  • FIG. 11 is a schematic cross-sectional view of the first heat exchange tube 31 of the thermal management component 30 of the battery 2 provided by other embodiments of the present application.
  • the first battery cell 10 and two adjacent second battery cells 40 surround the gap G, and the cross-sectional shape of the first heat exchange tube 31 matches the cross-sectional shape of the gap G.
  • the cross section of the first heat exchange tube 31 refers to a cross section perpendicular to the axial direction of the first heat exchange tube 31 .
  • the cross section of the gap G refers to a cross section perpendicular to the axial direction of the first heat exchange tube 31 .
  • Matching means that the cross-sectional shape of the first heat exchange tube 31 is substantially similar to the cross-sectional shape of the gap G.
  • the shape of the first heat exchange tube 31 can be set according to the shape of the gap G, which can increase the heat exchange area between the first heat exchange tube 31 and the first battery cell 10 and the first heat exchange tube 31
  • the heat exchange area with the second battery cell 40 improves the heat exchange efficiency.
  • Figure 12 is a schematic top view of the battery 2 provided by other embodiments of the present application.
  • first battery cells 10 there are multiple first battery cells 10 and there are multiple battery units 20 .
  • a plurality of first battery cells 10 and a plurality of battery cells 20 are stacked along the first direction X.
  • the thermal management component 30 is at least used to exchange heat with the first battery cell 10 adjacent to the battery unit 20 .
  • This embodiment does not limit the order in which the plurality of battery units 20 and the plurality of first battery cells 10 are stacked.
  • the plurality of battery units 20 and the plurality of first battery cells 10 may be alternately arranged along the first direction X, or they may A plurality of battery units 20 are continuously arranged, and a plurality of first battery cells 10 are arranged continuously.
  • the battery units 20 and the first battery cells 10 may also be arranged in other arrangements.
  • the adjacent battery unit 20 and the first battery unit 10 means that there are no other battery units 20 and the first battery unit 10 between the battery unit 20 and the first battery unit 10 .
  • Two battery units 20 being adjacent means that there is no other battery unit 20 between the two battery units 20 .
  • Two first battery cells 10 being adjacent means that there are no other first battery cells 10 between the two first battery cells 10 .
  • the battery unit 20 is provided with a gap G for accommodating the thermal management component 30. Therefore, the thermal management component 30 is provided correspondingly with the first battery cell 10 adjacent to the battery unit 20 to adjust the temperature of the corresponding first battery cell 10. . In this embodiment, some of the first battery cells 10 adjacent to the battery unit 20 may be provided with the thermal management component 30 , or all of the first battery cells 10 adjacent to the battery unit 20 may be provided with the thermal management component 30 . A thermal management component 30 is provided correspondingly.
  • a thermal management component 30 is connected to the first surface 11a of the first battery cell 10 facing the battery unit 20.
  • the thermal management component 30 may be connected to only one first surface 11 a , or both first surfaces 11 a may be connected to the thermal management component 30 .
  • Thermal Management Component 30 may be connected to only one first surface 11 a , or both first surfaces 11 a may be connected to the thermal management component 30 .
  • Stacking multiple battery units 20 and multiple first battery cells 10 can increase the capacity of the battery 2 .
  • a battery unit 20 is provided between any two adjacent first battery cells 10 .
  • the plurality of first battery cells 10 and the plurality of battery units 20 are alternately arranged along the first direction X.
  • One battery unit 20 is disposed between any two adjacent first battery cells 10 , and one first battery cell 10 is disposed between any two adjacent battery cells 20 .
  • Each first battery cell 10 is disposed adjacent to the battery unit 20 , and the thermal management component 30 accommodated in the gap G of the battery unit 20 can exchange heat with the first battery cell 10 adjacent to the battery unit 20 . Therefore, , each first battery cell 10 can exchange heat with the thermal management component 30 , which can improve the temperature consistency of multiple first battery cells 10 .
  • a thermal management component 30 is provided between any two adjacent first battery cells 10 .
  • Each first battery cell 10 can exchange heat with the thermal management component 30 , which can improve the temperature consistency of the plurality of first battery cells 10 .
  • FIG. 13 is an exploded schematic diagram of the battery 2 provided by other embodiments of the present application, in which part of the first battery cell 10 and the second battery cell 40 is omitted;
  • FIG. 14 is a thermal diagram of the battery 2 provided by other embodiments of the present application.
  • Figure 15 is a schematic structural diagram of the battery 2 provided by other embodiments of the present application.
  • thermal management components 30 there are multiple thermal management components 30 , and the multiple thermal management components 30 are arranged along the first direction X.
  • the plurality of thermal management components 30 can exchange heat with the plurality of first battery cells 10 , thereby improving the temperature consistency of the plurality of first battery cells 10 .
  • Thermal management component 30 may be provided according to the location and number of battery cells 20 .
  • the number of thermal management components 30 and the number of first battery cells 10 may be the same or different.
  • the number of thermal management components 30 is the same as the number of first battery cells 10 , and the thermal management components 30 and the first battery cells 10 are arranged in one-to-one correspondence.
  • each first battery unit 10 corresponds to two thermal management components 30 , and the two thermal management components 30 corresponding to the first battery unit 10 are respectively disposed on two sides of the first battery unit 10 .
  • First surface 11a In some examples, some of the first battery cells 10 are provided with the thermal management component 30 on only one first surface 11a, and some of the first battery cells 10 are provided with the thermal management component 30 on both first surfaces 11a. .
  • the battery 2 further includes a manifold 50 for connecting multiple thermal management components 30 .
  • the manifold 50 connects multiple thermal management components 30 in series, parallel or mixed connection.
  • Mixed connection means that the multiple thermal management components 30 are connected in series or in parallel.
  • the manifold 50 connects the plurality of thermal management components 30 to facilitate the flow of heat exchange medium in the plurality of thermal management components 30 .
  • the manifold 50 includes an inlet pipe 51 and an outlet pipe 52 , and each thermal management component 30 is connected to the inlet pipe 51 and the outlet pipe 52 , so that multiple thermal management components 30 are arranged in parallel.
  • the heat exchange medium can flow into the plurality of thermal management components 30 via the inflow pipe 51 and flow out from the outflow pipe 52 after flowing through the plurality of thermal management components 30 .
  • the inflow pipe 51 and the outflow pipe 52 connect multiple thermal management components 30 in parallel, which can reduce the temperature difference of the heat exchange medium in the multiple thermal management components 30 and improve the temperature consistency of the multiple first battery cells 10 .
  • the battery 2 further includes a frame structure 60 having a receiving cavity, and the battery unit 20 and the first battery cell 10 are received in the receiving cavity and installed on the frame structure 60 .
  • the inlet pipe 51 and the outlet pipe 52 are connected to the frame structure 60 .
  • the frame structure 60 can support and fix the first battery cell 10 and the second battery cell 40 to reduce the risk of dislocation and shaking of the first battery cell 10 and the second battery cell 40 .
  • the frame structure 60 can fix the inlet pipe 51 and the outlet pipe 52 to reduce the shaking amplitude of the inlet pipe 51 and the outlet pipe 52 and reduce the heat exchange medium caused by the inlet pipe 51 and the outlet pipe 51 .
  • the risk of leakage caused by damage to the flow tube 52 is eliminated, thereby improving safety.
  • battery unit 20 and first battery cell 10 constitute battery pack 70 .
  • the frame structure 60 includes two end plates 61 and a plurality of side plates.
  • the two end plates 61 are respectively located at two ends of the battery pack 70 along the first direction X.
  • Each side plate connects the two end plates 61 .
  • the inflow pipe 51 and the outflow pipe 52 are connected to the side plates.
  • the two end plates 61 may clamp the battery pack 70 from both ends of the battery pack 70 along the first direction X to limit the movement of the first battery cell 10 and the second battery cell 40 along the first direction X.
  • the inflow pipe 51 and the outflow pipe 52 can be connected to the same side plate, or can be connected to two different side plates respectively.
  • the inlet pipe 51 and the outlet pipe 52 are respectively connected to two different side plates. This embodiment can simplify the structure of a single side plate.
  • the plurality of side plates include two first side plates 62 and a second side plate 63.
  • the two first side plates 62 are respectively located on both sides of the battery pack 70, and the two first side plates 62 are The arrangement direction is perpendicular to the first direction X; the second side plate 63 connects the two first side plates 62 and the two end plates 61 .
  • the two second side plates 63 can limit the first battery cell 10 and the second battery cell 40 from both sides.
  • the second side plate 63 may be provided on the lower side of the battery pack 70 to support the first battery cell 10 and the second battery cell 40 .
  • the inlet pipe 51 and the outlet pipe 52 are connected to the two first side plates 62 respectively.
  • one of the inlet pipe 51 and the outflow pipe 52 is connected to the first side plate 62 , and the other is connected to the second side plate 63 .
  • the battery 2 further includes an inflow connector 81 and an outflow connector 82 provided on the end plate 61 , the inflow connector 81 is used to communicate with the inflow pipe 51 , and the outflow connector 82 is used to communicate with the outflow pipe 52 Connected.
  • the inflow joint 81 and the outflow joint 82 can be used to communicate with a supply device for providing heat exchange medium outside the battery 2 so that the heat exchange medium can circulate between the plurality of thermal management components 30 and the supply device.
  • the supply device includes a liquid storage tank, a pump and connecting pipelines
  • the liquid storage tank is used to store the heat exchange medium
  • the connecting pipeline is used to connect the liquid storage tank with the inflow connector 81 and the outflow connector 82
  • the pump is provided in the connecting pipeline and is used to drive the heat exchange medium to circulate between the thermal management component 30 and the liquid storage tank.
  • the inflow connector 81 and the outflow connector 82 are disposed on the same end plate 61 .
  • Arranging the inflow joint 81 and the outflow joint 82 on the same end plate 61 can facilitate the connection between the supply device for providing heat exchange medium and the inflow joint 81 and the outflow joint 82, and help simplify the connecting pipe of the supply device. road.
  • FIG. 16 is a schematic three-dimensional structural diagram of a part of the battery 2 shown in FIG. 15 ;
  • FIG. 17 is a schematic structural diagram of the thermal management component 30 shown in FIG. 16 .
  • the battery 2 includes a plurality of battery columns 90 , and each battery column 90 includes a first battery cell 10 and a battery unit 20 stacked along the first direction X.
  • the arrangement direction of the plurality of battery rows 90 is perpendicular to the first direction X and parallel or perpendicular to the second direction Y; the first direction X is perpendicular to the second direction Y.
  • Arranging the plurality of first battery cells 10 and the plurality of battery units 20 in multiple columns can increase the energy density of the battery 2 and simplify the structure of the battery 2 .
  • the total number of first battery cells 10 and battery units 20 of the plurality of battery rows 90 is the same.
  • the number of first battery cells 10 in the plurality of battery columns 90 is the same, and the number of battery units 20 in the plurality of battery columns 90 is the same.
  • the first battery cells 10 of the multiple battery rows 90 are opposite along the arrangement direction, and the battery units 20 of the multiple battery rows 90 are opposite along the arrangement direction.
  • the gaps G of the battery cells 20 of each battery row 90 can be used to accommodate the thermal management component 30 .
  • the battery cells 20 of the plurality of battery rows 90 face each other along the arrangement direction, which facilitates the connection of multiple parts of the thermal management component 30 provided in the plurality of battery rows 90 .
  • the arrangement direction of the plurality of battery columns 90 is parallel to the second direction Y.
  • the thermal management component 30 includes a plurality of first heat exchange tubes 31 arranged along the second direction Y, and at least part of each first heat exchange tube 31 is accommodated in the gap G of the battery unit 20 .
  • the plurality of first heat exchange tubes 31 of the thermal management component 30 are used to exchange heat with the first battery cells 10 of the plurality of battery rows 90 .
  • the first battery cells 10 of each battery row 90 are arranged corresponding to at least one first heat exchange tube 31 of the thermal management component 30 .
  • the plurality of first heat exchange tubes 31 of the thermal management component 30 can simultaneously exchange heat with the first battery cells 10 of the multiple battery rows 90 , which can simplify the structure of the thermal management component 30 .
  • each first battery cell 10 is provided with a plurality of first heat exchange tubes 31 .
  • the thermal management component 30 includes a plurality of second heat exchange tubes 32 for communicating the plurality of first heat exchange tubes 31 .
  • the plurality of first heat exchange tubes 31 and the plurality of second heat exchange tubes 32 are alternately connected.
  • Figure 18 is an exploded schematic diagram of the battery 2 provided by other embodiments of the present application, in which part of the first battery cell 10 and the second battery cell 40 is omitted;
  • Figure 19 is the structure of the battery 2 provided by other embodiments of the present application.
  • Figure 20 is a schematic structural diagram of the first battery cell 10 and the thermal management component 30 of Figure 18.
  • the arrangement direction of the battery rows 90 is perpendicular to the second direction Y.
  • the arrangement direction of the battery rows 90 is parallel to the third direction Z.
  • the thermal management component 30 includes a plurality of first heat exchange tubes 31 arranged along the second direction Y, and at least part of each first heat exchange tube 31 is accommodated in the gap G of the battery unit 20 .
  • Each first heat exchange tube 31 is used to exchange heat with the first battery cells 10 of the plurality of battery rows 90 .
  • the first heat exchange tubes 31 are accommodated in the gaps G of the battery cells 20 of the plurality of battery rows 90 .
  • Each first heat exchange tube 31 of the thermal management component 30 can simultaneously exchange heat with the first battery cells 10 of the plurality of battery rows 90, which can simplify the structure of the thermal management component 30.
  • the first heat exchange tube 31 extends along the arrangement direction of the battery rows 90 .
  • the thermal management component 30 includes a plurality of second heat exchange tubes 32 for communicating the plurality of first heat exchange tubes 31 .
  • the plurality of first heat exchange tubes 31 and the plurality of second heat exchange tubes 32 are connected alternately.
  • the present application also provides an electrical device, including the battery 2 of any of the above embodiments.
  • the battery 2 is used to provide electrical energy to the electrical device.
  • the power-consuming device may be any of the aforementioned devices or systems using the battery 2 .
  • embodiments of the present application provide a battery 2 that includes two battery rows 90 and a plurality of thermal management components 30 .
  • Each battery column 90 includes a plurality of first battery cells 10 and a plurality of battery cells 20 , and the plurality of first battery cells 10 and the plurality of battery cells 20 are alternately stacked along the first direction X.
  • Each battery unit 20 includes a plurality of second battery cells 40 arranged along the second direction Y, which is perpendicular to the first direction X.
  • the two battery rows 90 are arranged along the second direction Y.
  • the first battery cell 10 is a square battery cell
  • the second battery cell 40 is a cylindrical battery cell.
  • a gap G is provided between any two second battery cells 40 of the battery unit 20 .
  • the plurality of thermal management components 30 are arranged along the first direction X.
  • Each thermal management component 30 includes a plurality of first heat exchange tubes 31 and a plurality of second heat exchange tubes 32.
  • the plurality of first heat exchange tubes 31 are arranged along the second direction Y.
  • the plurality of first heat exchange tubes 31 and a plurality of second heat exchange tubes 32 are arranged along the second direction Y.
  • the second heat exchange tubes 32 are connected alternately.
  • a portion of the plurality of first heat exchange tubes 31 of the thermal management component 30 is accommodated in the gap G of the battery unit 20 of one battery row 90 and is used to exchange heat with the first battery unit 10 of the one battery row 90 .
  • Another part of the plurality of first heat exchange tubes 31 of the management component is accommodated in the gap G of the battery unit 20 of another battery row 90 and is used to exchange heat with the first battery unit 10 of the other battery row 90 .

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Abstract

Provided in the embodiments of the present application are a battery and an electric device. The battery comprises a first battery cell, a battery unit, and a heat management component. The battery unit and the first battery cell are stacked in a first direction. The battery unit comprises a plurality of second battery cells arranged in a second direction which intersects with the first direction. In the second direction, a gap is arranged between at least two second battery cells of the battery unit. At least a portion of the heat management component is accommodated in the gap and is used to exchange heat with the first battery cell. Since at least a portion of the heat management component is accommodated in the gap between the second battery cells, the space utilization rate is improved, so that the battery has a more compact structure, and the energy density of the battery is further increased. The heat management component can adjust the temperature of the first battery cell, thereby improving the cycle performance of the battery.

Description

电池和用电装置Batteries and electrical devices 技术领域Technical field
本申请涉及电池领域，特别是涉及一种电池和用电装置。The present application relates to the field of batteries, and in particular to a battery and an electrical device.
背景技术Background technique
电池广泛用于电子设备，例如手机、笔记本电脑、电瓶车、电动汽车、电动飞机、电动轮船、电动玩具汽车、电动玩具轮船、电动玩具飞机和电动工具等等。Batteries are widely used in electronic devices, such as mobile phones, laptops, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools, etc.
在电池技术的发展中，如何改善电池的循环性能，是电池技术中一个重要的研究方向。In the development of battery technology, how to improve the cycle performance of batteries is an important research direction in battery technology.
发明内容Contents of the invention
本申请提供了一种电池和用电装置，其能改善电池的循环性能。The present application provides a battery and an electrical device, which can improve the cycle performance of the battery.
第一方面，本申请实施例提供了一种电池，包括第一电池单体、电池单元和热管理部件。电池单元与第一电池单体沿第一方向堆叠。电池单元包括沿第二方向布置的多个第二电池单体，第二方向与第一方向相交，在第二方向上，电池单元的至少两个第二电池单体之间设有空隙。热管理部件的至少部分容纳于空隙并用于与第一电池单体换热。In a first aspect, embodiments of the present application provide a battery, including a first battery cell, a battery unit and a thermal management component. The battery unit and the first battery cell are stacked along a first direction. The battery unit includes a plurality of second battery cells arranged along a second direction that intersects the first direction, and a gap is provided between at least two second battery cells of the battery unit in the second direction. At least part of the thermal management component is received in the void and used to exchange heat with the first battery cell.
上述方案中，热管理部件的至少部分容纳于第二电池单体之间的空隙，以提高空间利用率，使电池的结构更为紧凑，进而提高电池的能量密度。热管理部件可以调节第一电池单体的温度，从而改善电池的循环性能。热管理部件的容纳于空隙的部分还可以对第二电池单体进行限位和缓冲，降低第二电池单体沿第二方向偏移的风险。In the above solution, at least part of the thermal management component is accommodated in the gap between the second battery cells to improve space utilization, make the battery structure more compact, and thereby increase the energy density of the battery. The thermal management component can adjust the temperature of the first battery cell, thereby improving the cycle performance of the battery. The portion of the thermal management component accommodated in the gap can also limit and buffer the second battery cell, thereby reducing the risk of the second battery cell being displaced in the second direction.
在一些实施方式中，第一电池单体和第二电池单体具有不同的形状，可以使空隙的形状、尺寸的设置更为灵活。In some embodiments, the first battery cell and the second battery cell have different shapes, which can make the shape and size of the gap more flexible.
在一些实施方式中，第一电池单体为方形电池单体，第二电池单体为圆柱电池单体。圆柱电池单体和方形电池单体混合排布时，圆柱电池单体之间的空隙可以为热管理部件提供空间，进而提高空间利用率，并改善方形电池单体的循环性能。In some embodiments, the first battery cell is a square battery cell, and the second battery cell is a cylindrical battery cell. When cylindrical battery cells and prismatic battery cells are mixedly arranged, the gaps between the cylindrical battery cells can provide space for thermal management components, thereby improving space utilization and improving the cycle performance of the prismatic battery cells.
在一些实施方式中，第一方向垂直于第二方向。In some embodiments, the first direction is perpendicular to the second direction.
在一些实施方式中，第二电池单体沿第三方向的尺寸大于第二电池单体沿第一方向的尺寸，第二电池单体沿第三方向的尺寸大于第二电池单体沿第二方向的尺寸，第一方向、第二方向以及第三方向两两垂直。空隙在第三方向上具有较大的尺寸，以为热管理部件提供更多的空间。In some embodiments, the size of the second battery cell along the third direction is greater than the size of the second battery cell along the first direction, and the size of the second battery cell along the third direction is greater than the size of the second battery cell along the second direction. The size of the direction, the first direction, the second direction and the third direction are perpendicular to each other. The void has a larger size in the third direction to provide more space for thermal management components.
在一些实施方式中，第一电池单体包括第一外壳，第二电池单体包括第二外壳。第一外壳沿第三方向的尺寸等于第二外壳沿第三方向的尺寸，可改善第一电池单体和 第二电池单体在第三方向上的尺寸的一致性，便于实现第一电池单体和第二电池单体的排布。In some embodiments, the first battery cell includes a first housing and the second battery cell includes a second housing. The size of the first housing along the third direction is equal to the size of the second housing along the third direction, which can improve the consistency of the size of the first battery cell and the second battery cell in the third direction, and facilitate the realization of the first battery cell. and the arrangement of the second battery cells.
在一些实施方式中，第一电池单体具有沿第一方向相对设置的两个第一表面，电池单元的多个第二电池单体与第一表面相连接。热管理部件连接于第一表面。多个第二电池单体与第一表面相连接，可提高电池整体的结构强度。热管理部件与第一表面换热，以调节第一电池单体的温度。In some embodiments, the first battery cell has two first surfaces oppositely arranged along a first direction, and a plurality of second battery cells of the battery unit are connected to the first surface. The thermal management component is attached to the first surface. A plurality of second battery cells are connected to the first surface, which can improve the overall structural strength of the battery. The thermal management component exchanges heat with the first surface to regulate the temperature of the first battery cell.
在一些实施方式中，第一表面为平面。第二电池单体的外表面的至少部分为弧形面，弧形面用于与第一表面连接。在第二方向上，两个相邻的第二电池单体的弧形面之间形成空隙。弧形面与第一表面相连接，可以减小第一电池单体与第二电池单体之间的热传递面积，降低第一电池单体与第二电池单体之间的热传递速率，当某个电池单体出现热失控时，降低热扩散的风险，提高电池的安全性。In some embodiments, the first surface is planar. At least part of the outer surface of the second battery cell is an arc-shaped surface, and the arc-shaped surface is used to connect with the first surface. In the second direction, a gap is formed between the arcuate surfaces of two adjacent second battery cells. The arcuate surface is connected to the first surface, which can reduce the heat transfer area between the first battery cell and the second battery cell, and reduce the heat transfer rate between the first battery cell and the second battery cell, When a certain battery cell experiences thermal runaway, the risk of heat diffusion is reduced and the safety of the battery is improved.
在一些实施方式中，热管理部件粘接于第一表面，以使热管理部件与第一电池单体稳定连接，实现热管理部件与第一电池单体的稳定换热。In some embodiments, the thermal management component is bonded to the first surface to stably connect the thermal management component to the first battery cell and achieve stable heat exchange between the thermal management component and the first battery cell.
在一些实施方式中，热管理部件的容纳于空隙的部分还可用于与第二电池单体换热。热管理部件能够同时调节第一电池单体和第二电池单体的温度，以改善第一电池单体和第二电池单体循环性能的一致性。In some embodiments, the portion of the thermal management component housed in the void may also be used to exchange heat with the second battery cell. The thermal management component can simultaneously adjust the temperature of the first battery cell and the second battery cell to improve the consistency of cycle performance of the first battery cell and the second battery cell.
在一些实施方式中，热管理部件通过导热胶连接于第二电池单体。热管理部件通过导热胶与第二电池单体换热，以调节第二电池单体的温度。热管理部件还能够通过导热胶对第二电池单体进行限位，降低第二电池单体在受到外部冲击时偏移的风险。In some embodiments, the thermal management component is connected to the second battery cell through thermally conductive glue. The thermal management component exchanges heat with the second battery cell through thermal conductive glue to adjust the temperature of the second battery cell. The thermal management component can also limit the position of the second battery cell through thermally conductive glue, thereby reducing the risk of the second battery cell being displaced when subjected to external impact.
在一些实施方式中，在电池单元中，任意相邻的两个第二电池单体彼此连接，以提高电池单元整体的结构强度，降低第二电池单体晃动的风险。In some embodiments, in the battery unit, any two adjacent second battery cells are connected to each other to improve the overall structural strength of the battery unit and reduce the risk of the second battery cells shaking.
在一些实施方式中，电池单元的第二电池单体的数量至少为三个。在电池单元中，任意两个相邻的第二电池单体之间设有空隙。通过设置多个空隙，可以增大热管理部件与第一电池单体之间的换热面积，提高换热效率。In some embodiments, the number of second cells of the battery unit is at least three. In the battery unit, a gap is provided between any two adjacent second battery cells. By providing multiple gaps, the heat exchange area between the thermal management component and the first battery cell can be increased and the heat exchange efficiency can be improved.
在一些实施方式中，热管理部件包括多个沿第二方向布置的第一换热管。各空隙内设有第一换热管。热管理部件可根据空隙的大小、位置灵活地设置第一换热管。In some embodiments, the thermal management component includes a plurality of first heat exchange tubes arranged in the second direction. A first heat exchange tube is provided in each gap. The thermal management component can flexibly set the first heat exchange tube according to the size and position of the gap.
在一些实施方式中，各空隙内设有热管理部件的一个第一换热管。In some embodiments, a first heat exchange tube of the thermal management component is disposed in each void.
在一些实施方式中，热管理部件包括多个第二换热管，用于将多个第一换热管连通。多个第二换热管将多个第一换热管连通，以使换热介质可以在多个第一换热管中流道。In some embodiments, the thermal management component includes a plurality of second heat exchange tubes for communicating the plurality of first heat exchange tubes. The plurality of second heat exchange tubes connect the plurality of first heat exchange tubes so that the heat exchange medium can flow in the plurality of first heat exchange tubes.
在一些实施方式中，第二换热管设置为两个，两个第二换热管间隔设置。多个第一换热管位于两个第二换热管之间，且各第一换热管的两端分别连通于两个第二换热管。两个第二换热管将多个第一换热管并联。In some embodiments, there are two second heat exchange tubes, and the two second heat exchange tubes are arranged at intervals. A plurality of first heat exchange tubes are located between two second heat exchange tubes, and both ends of each first heat exchange tube are respectively connected to the two second heat exchange tubes. Two second heat exchange tubes connect multiple first heat exchange tubes in parallel.
在一些实施方式中，多个第一换热管和多个第二换热管交替连接。多个第二换热管将多个第一换热管串联。In some embodiments, a plurality of first heat exchange tubes and a plurality of second heat exchange tubes are connected alternately. The plurality of second heat exchange tubes connect the plurality of first heat exchange tubes in series.
在一些实施方式中，第一换热管沿第三方向延伸，第一方向、第二方向以及第三方向两两垂直。In some embodiments, the first heat exchange tube extends along a third direction, and the first direction, the second direction and the third direction are two perpendicular to each other.
在一些实施方式中，第一换热管的截面为三角形、梯形、矩形或半圆形。In some embodiments, the cross-section of the first heat exchange tube is triangular, trapezoidal, rectangular or semicircular.
在一些实施方式中，第一电池单体和两个相邻的第二电池单体围绕空隙，第一换热管的截面的形状与空隙的截面的形状相匹配。根据空隙的形状来设置第一换热管的形状，这样可以增大第一换热管与第一电池单体之间的换热面积以及第一换热管与第二电池单体之间的换热面积，提高换热效率。In some embodiments, the first battery cell and two adjacent second battery cells surround the gap, and the cross-sectional shape of the first heat exchange tube matches the cross-sectional shape of the gap. The shape of the first heat exchange tube is set according to the shape of the gap, which can increase the heat exchange area between the first heat exchange tube and the first battery cell and the heat exchange area between the first heat exchange tube and the second battery cell. Heat exchange area to improve heat exchange efficiency.
在一些实施方式中，热管理部件的材质包括铜、铝合金和不锈钢中的至少一种。铜、铝合金和不锈钢等材料具有较好的导热性。In some embodiments, the material of the thermal management component includes at least one of copper, aluminum alloy, and stainless steel. Materials such as copper, aluminum alloy and stainless steel have good thermal conductivity.
在一些实施方式中，第一电池单体设置为多个，电池单元设置为多个。多个第一电池单体和多个电池单元沿第一方向堆叠。热管理部件至少用于和与电池单元相邻的第一电池单体进行换热。多个电池单元和多个第一电池单体堆叠，可以提高电池的容量。In some embodiments, there are multiple first battery cells and there are multiple battery units. A plurality of first battery cells and a plurality of battery units are stacked along a first direction. The thermal management component is at least used to exchange heat with the first battery cell adjacent to the battery unit. Stacking multiple battery units and multiple first battery cells can increase the capacity of the battery.
在一些实施方式中，多个第一电池单体和多个电池单元沿第一方向交替设置。每个第一电池单体均与电池单元相邻设置，而容纳于电池单元的空隙的热管理部件可以和与电池单元相邻的第一电池单体换热，每个第一电池单体均可以与热管理部件换热，这样可以改善多个第一电池单体的温度一致性。In some embodiments, the plurality of first battery cells and the plurality of battery units are alternately arranged along the first direction. Each first battery cell is disposed adjacent to the battery unit, and the thermal management component accommodated in the gap of the battery unit can exchange heat with the first battery cell adjacent to the battery unit. Each first battery cell is Heat can be exchanged with the thermal management component, which can improve temperature consistency of the plurality of first battery cells.
在一些实施方式中，任意相邻的两个第一电池单体之间设有热管理部件。每个第一电池单体均可以与热管理部件换热，这样可以改善多个第一电池单体的温度一致性。In some embodiments, a thermal management component is provided between any two adjacent first battery cells. Each first battery cell can exchange heat with the thermal management component, which can improve the temperature consistency of the plurality of first battery cells.
在一些实施方式中，热管理部件为多个，多个热管理部件沿第一方向布置。多个热管理部件可以与多个第一电池单体换热，从而改善多个第一电池单体温度的一致性。In some embodiments, there are multiple thermal management components, and the multiple thermal management components are arranged along the first direction. The plurality of thermal management components may exchange heat with the plurality of first battery cells, thereby improving temperature consistency of the plurality of first battery cells.
在一些实施方式中，电池还包括汇流管路，汇流管路用于将多个热管理部件连通，以便于换热介质在多个热管理部件中流动。In some embodiments, the battery further includes a manifold pipeline, which is used to connect multiple thermal management components to facilitate the flow of the heat exchange medium in the multiple thermal management components.
在一些实施方式中，汇流管路包括进流管和出流管，各热管理部件连通于进流管和出流管，以使多个热管理部件并联设置。进流管和出流管将多个热管理部件并联，这样可以减小多个热管理部件中的换热介质的温度差，改善多个第一电池单体的温度一致性。In some embodiments, the manifold pipeline includes an inlet pipe and an outlet pipe, and each thermal management component is connected to the inlet pipe and the outlet pipe, so that multiple thermal management components are arranged in parallel. The inflow pipe and the outflow pipe connect multiple thermal management components in parallel, which can reduce the temperature difference of the heat exchange medium in the multiple thermal management components and improve the temperature consistency of the multiple first battery cells.
在一些实施方式中，电池还包括框架结构，框架结构具有容纳腔，电池单元和第一电池单体容纳于容纳腔并安装于框架结构。进流管和出流管连接于框架结构。框架结构可以支撑和固定第一电池单体和第二电池单体，以降低第一电池单体和第二电池单体错位、晃动的风险。在电池受到外部冲击时，框架结构可以固定进流管和出流管，以减小进流管和出流管晃动的幅度，降低换热介质因进流管和出流管破损而泄露的风险，提高安全性。In some embodiments, the battery further includes a frame structure, the frame structure has a receiving cavity, and the battery unit and the first battery cell are received in the receiving cavity and installed on the frame structure. The inlet pipe and the outlet pipe are connected to the frame structure. The frame structure can support and fix the first battery cell and the second battery cell to reduce the risk of dislocation and shaking of the first battery cell and the second battery cell. When the battery is subject to external impact, the frame structure can fix the inlet and outlet pipes to reduce the shaking of the inlet and outlet pipes and reduce the risk of leakage of the heat exchange medium due to damage to the inlet and outlet pipes. , improve safety.
在一些实施方式中，电池单元和第一电池单体构成电池组。框架结构包括两个端板和多个侧板，两个端板分别位于电池组沿第一方向的两端，各侧板连接两个端板。进流管和出流管连接于侧板。In some embodiments, the battery cell and the first battery cell form a battery pack. The frame structure includes two end plates and a plurality of side plates. The two end plates are respectively located at both ends of the battery pack along the first direction. Each side plate connects the two end plates. The inlet pipe and the outlet pipe are connected to the side plate.
在一些实施方式中，进流管和出流管分别连接于两个不同的侧板，以简化单个侧板的结构。In some embodiments, the inlet pipe and the outlet pipe are respectively connected to two different side plates to simplify the structure of a single side plate.
在一些实施方式中，多个侧板包括两个第一侧板和第二侧板，两个第一侧板分 别位于电池组的两侧，且两个第一侧板的布置方向垂直于第一方向；第二侧板连接两个第一侧板和两个端板。进流管和出流管分别连接于两个第一侧板；或者，进流管和出流管中的一者连接于第一侧板，另一者连接于第二侧板。In some embodiments, the plurality of side plates include two first side plates and a second side plate. The two first side plates are respectively located on both sides of the battery pack, and the arrangement direction of the two first side plates is perpendicular to the first side plate. One direction; the second side plate connects the two first side plates and the two end plates. The inlet pipe and the outflow pipe are respectively connected to the two first side plates; or, one of the inlet pipe and the outflow pipe is connected to the first side plate, and the other is connected to the second side plate.
在一些实施方式中，电池还包括设置于端板的进流接头和出流接头，进流接头用于与进流管连通，出流接头用于与出流管连通。进流接头和出流接头可用于与电池外部的用于提供换热介质的供给装置连通，以使换热介质能够在多个热管理部件和供给装置之间循环流动。In some embodiments, the battery further includes an inflow connector and an outflow connector provided on the end plate, the inflow connector is used to communicate with the inflow pipe, and the outflow connector is used to communicate with the outflow pipe. The inflow joint and the outflow joint can be used to communicate with a supply device for providing heat exchange medium outside the battery, so that the heat exchange medium can circulate between the plurality of thermal management components and the supply device.
在一些实施方式中，进流接头和出流接头设置于同一个端板，便于用于提供换热介质的供给装置与进流接头和出流接头连通，有助于简化供给装置的连接管路。In some embodiments, the inflow joint and the outflow joint are provided on the same end plate, which facilitates the connection between the supply device for providing heat exchange medium and the inflow joint and the outflow joint, and helps to simplify the connection pipeline of the supply device. .
在一些实施方式中，电池包括多个电池列，各电池列包括沿第一方向堆叠的第一电池单体和电池单元。多个电池列的排列方向垂直于第一方向，且平行于或垂直于第二方向。第一方向垂直于第二方向。将多个第一电池单体和多个电池单元排布为多列，可以提高电池的能量密度，简化电池的结构。In some embodiments, the battery includes a plurality of battery columns, each battery column including first battery cells and battery cells stacked along a first direction. The arrangement direction of the plurality of battery columns is perpendicular to the first direction and parallel or perpendicular to the second direction. The first direction is perpendicular to the second direction. Arranging multiple first battery cells and multiple battery units into multiple columns can increase the energy density of the battery and simplify the structure of the battery.
在一些实施方式中，多个电池列的第一电池单体沿排列方向相对，多个电池列的电池单元沿排列方向相对。各电池列的电池单元的空隙均可用于容纳热管理部件。多个电池列的电池单元沿排列方向相对，便于热管理部件的设于多个电池列的多个部分相连。In some embodiments, the first battery cells of the plurality of battery columns are opposite to each other along the arrangement direction, and the battery cells of the plurality of battery columns are opposite to each other along the arrangement direction. The voids in the battery cells of each battery column can be used to accommodate thermal management components. The battery cells of the plurality of battery columns are opposite to each other along the arrangement direction, which facilitates the connection of multiple parts of the thermal management component provided in the plurality of battery columns.
在一些实施方式中，多个电池列的排列方向平行于第二方向。热管理部件包括多个沿第二方向布置的第一换热管，各第一换热管的至少部分容纳于电池单元的空隙。热管理部件的多个第一换热管用于与多个电池列的第一电池单体换热。热管理部件的多个第一换热管可以同时与多个电池列的第一电池单体进行换热，可简化热管理部件的结构。In some embodiments, the arrangement direction of the plurality of battery columns is parallel to the second direction. The thermal management component includes a plurality of first heat exchange tubes arranged along the second direction, and at least part of each first heat exchange tube is accommodated in the gap of the battery unit. The plurality of first heat exchange tubes of the thermal management component are used to exchange heat with the first battery cells of the plurality of battery columns. The plurality of first heat exchange tubes of the thermal management component can simultaneously exchange heat with the first battery cells of multiple battery rows, which can simplify the structure of the thermal management component.
在一些实施方式中，多个电池列的排列方向垂直于第二方向。热管理部件包括多个沿第二方向布置的第一换热管，各第一换热管的至少部分容纳于电池单元的空隙。各第一换热管用于与多个电池列的第一电池单体换热。热管理部件的各第一换热管可以同时与多个电池列的第一电池单体进行换热，可简化热管理部件的结构。In some embodiments, the arrangement direction of the plurality of battery columns is perpendicular to the second direction. The thermal management component includes a plurality of first heat exchange tubes arranged along the second direction, and at least part of each first heat exchange tube is accommodated in the gap of the battery unit. Each first heat exchange tube is used to exchange heat with the first battery cells of the plurality of battery rows. Each first heat exchange tube of the thermal management component can simultaneously exchange heat with the first battery cells of multiple battery rows, which can simplify the structure of the thermal management component.
第二方面，本申请实施例提供了一种用电装置，包括第一方面任一实施方式的电池，电池用于提供电能。In a second aspect, embodiments of the present application provide an electrical device, including the battery according to any embodiment of the first aspect, and the battery is used to provide electric energy.
附图说明Description of the drawings
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据附图获得其他的附图。In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on the drawings without exerting creative efforts.
图1为本申请一些实施例提供的车辆的结构示意图；Figure 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application;
图2为本申请一些实施例提供的电池的***示意图；Figure 2 is an exploded schematic diagram of a battery provided by some embodiments of the present application;
图3为本申请一些实施例提供的电池的结构示意图；Figure 3 is a schematic structural diagram of a battery provided by some embodiments of the present application;
图4为图3所示电池的一部分的结构示意图；Figure 4 is a schematic structural diagram of a part of the battery shown in Figure 3;
图5为图4所示的第一电池单体的剖视示意图；Figure 5 is a schematic cross-sectional view of the first battery cell shown in Figure 4;
图6为图4所示的第二电池单体的剖视示意图；Figure 6 is a schematic cross-sectional view of the second battery cell shown in Figure 4;
图7为图4所示的电池的剖视示意图；Figure 7 is a schematic cross-sectional view of the battery shown in Figure 4;
图8为图4所示的第一电池单体和热管理部件的结构示意图；Figure 8 is a schematic structural diagram of the first battery cell and thermal management component shown in Figure 4;
图9为图8所示的热管理部件的结构示意图；Figure 9 is a schematic structural diagram of the thermal management component shown in Figure 8;
图10为本申请另一些实施例提供的电池的热管理部件的结构示意图；Figure 10 is a schematic structural diagram of a thermal management component of a battery provided by other embodiments of the present application;
图11为本申请另一些实施例提供的电池的热管理部件的第一换热管的截面的示意图；Figure 11 is a schematic cross-sectional view of the first heat exchange tube of the thermal management component of the battery provided by other embodiments of the present application;
图12为本申请另一些实施例提供的电池的俯视示意图；Figure 12 is a schematic top view of a battery provided by other embodiments of the present application;
图13为本申请另一些实施例提供的电池的***示意图，其中部分的第一电池单体和第二电池单体省略；Figure 13 is an exploded schematic diagram of a battery provided by other embodiments of the present application, in which part of the first battery cell and the second battery cell are omitted;
图14为本申请另一些实施例提供的电池的热管理部件和汇流管路的结构示意图；Figure 14 is a schematic structural diagram of the thermal management components and manifold pipelines of the battery provided by other embodiments of the present application;
图15为本申请另一些实施例提供的电池的结构示意图；Figure 15 is a schematic structural diagram of a battery provided by other embodiments of the present application;
图16为图15所示的电池的一部分的立体结构示意图；Figure 16 is a schematic three-dimensional structural diagram of a part of the battery shown in Figure 15;
图17为图16所示的热管理部件的结构示意图；Figure 17 is a schematic structural diagram of the thermal management component shown in Figure 16;
图18为本申请另一些实施例提供的电池的***示意图，其中部分的第一电池单体和第二电池单体省略；Figure 18 is an exploded schematic diagram of a battery provided by other embodiments of the present application, in which part of the first battery cell and the second battery cell are omitted;
图19为本申请另一些实施例提供的电池的结构示意图；Figure 19 is a schematic structural diagram of a battery provided by other embodiments of the present application;
图20为图18的第一电池单体和热管理部件的结构示意图。FIG. 20 is a schematic structural diagram of the first battery cell and thermal management component of FIG. 18 .
具体实施方式的附图标记如下：The reference numbers for the specific implementation are as follows:
1、车辆；2、电池；3、控制器；4、马达；5、箱体；5a、第一箱体部；5b、第二箱体部；5c、容纳空间；10、第一电池单体；11、第一外壳；111、第一壳体；112、第一端盖；11a、第一表面；11b、第二表面；11c、第三表面；12、第一电极组件；13、第一电极端子；14、第二电极端子；20、电池单元；30、热管理部件；31、第一换热管；32、第二换热管；40、第二电池单体；41、第二外壳；411、第二壳体；412第二端盖；42、第二电极组件；43、第三电极端子；44、第四电极端子；40a、外表面；50、汇流管路；51、进流管；52、出流管；60、框架结构；61、端板；62、第一侧板；63、第二侧板；70、电池组；81、进流接头；82、出流接头；90、电池列；G、空隙；X、第一方向；Y、第二方向；Z、第三方向。1. Vehicle; 2. Battery; 3. Controller; 4. Motor; 5. Box; 5a, first box part; 5b, second box part; 5c, accommodation space; 10. first battery cell ; 11. First shell; 111. First housing; 112. First end cover; 11a. First surface; 11b. Second surface; 11c. Third surface; 12. First electrode assembly; 13. First Electrode terminal; 14. Second electrode terminal; 20. Battery unit; 30. Thermal management component; 31. First heat exchange tube; 32. Second heat exchange tube; 40. Second battery cell; 41. Second casing ; 411. Second housing; 412 second end cover; 42. Second electrode assembly; 43. Third electrode terminal; 44. Fourth electrode terminal; 40a, outer surface; 50. Manifold pipe; 51. Inflow Pipe; 52, outlet pipe; 60, frame structure; 61, end plate; 62, first side plate; 63, second side plate; 70, battery pack; 81, inlet connector; 82, outlet connector; 90 , battery row; G, gap; X, first direction; Y, second direction; Z, third direction.
具体实施方式Detailed ways
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护 的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are Apply for some of the embodiments, not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of this application.
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the technical field of this application; the terms used in the specification of this application are only for describing specific implementations. The purpose of the examples is not intended to limit the application; the terms "including" and "having" and any variations thereof in the description and claims of the application and the above description of the drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or priority relationship.
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。Reference in this application to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection" and "attachment" should be understood in a broad sense. For example, it can be a fixed connection, It can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediate medium; it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。The term "and/or" in this application is just an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, alone There are three situations B. In addition, the character "/" in this application generally indicates that the related objects are an "or" relationship.
在本申请的实施例中，相同的附图标记表示相同的部件，并且为了简洁，在不同实施例中，省略对相同部件的详细说明。应理解，附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸，以及集成装置的整体厚度、长宽等尺寸仅为示例性说明，而不应对本申请构成任何限定。In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of simplicity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are only illustrative illustrations and should not constitute any limitation to the present application. .
本申请中出现的“多个”指的是两个以上(包括两个)。"Plural" appearing in this application means two or more (including two).
本申请中术语“平行”不仅包括绝对平行的情况，也包括了工程上常规认知的大致平行的情况；同时，“垂直”也不仅包括绝对垂直的情况，还包括工程上常规认知的大致垂直的情况。In this application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation that is conventionally recognized in engineering; at the same time, the term "perpendicular" includes not only the absolutely vertical situation, but also the roughly parallel situation that is conventionally recognized in engineering. vertical situation.
本申请中，电池单体可以包括锂离子电池单体、锂硫电池单体、钠锂离子电池单体、钠离子电池单体或镁离子电池单体等，本申请实施例对此并不限定。In this application, battery cells may include lithium-ion battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc. The embodiments of this application are not limited to this. .
本申请的实施例所提到的电池是指包括多个电池单体以提供更高的电压和容量的单一的物理模块。电池一般可包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。The battery mentioned in the embodiments of this application refers to a single physical module including multiple battery cells to provide higher voltage and capacity. A battery may generally include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.
电池单体包括外壳和容纳于外壳内的电极组件，电极组件包括正极极片、负极极片和隔离件。电池单体主要依靠金属离子在正极极片和负极极片之间移动来工作。正极极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面；正极集流体包括正极集流部和正极极耳，正极集流部涂覆有正极活性物质层，正极极耳未涂覆正极活性物质层。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质层包括正极活性物质，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极 集流体的表面；负极集流体包括负极集流部和负极极耳，负极集流部涂覆有负极活性物质层，负极极耳未涂覆负极活性物质层。负极集流体的材料可以为铜，负极活性物质层包括负极活性物质，负极活性物质可以为碳或硅等。隔离件的材质可以为PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)等。The battery cell includes a casing and an electrode assembly contained in the casing. The electrode assembly includes a positive electrode piece, a negative electrode piece and a separator. Battery cells mainly rely on the movement of metal ions between the positive and negative electrodes to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The positive electrode current collector includes a positive electrode current collector and a positive electrode tab. The positive electrode current collector is coated with the positive electrode active material layer. , the positive electrode tab is not coated with the positive electrode active material layer. Taking lithium-ion batteries as an example, the material of the cathode current collector can be aluminum, and the cathode active material layer includes cathode active materials. The cathode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganate, etc. The negative electrode piece includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector includes a negative electrode current collector and a negative electrode tab. The negative electrode current collector is coated with the negative electrode active material layer. , the negative electrode tab is not coated with the negative electrode active material layer. The negative electrode current collector may be made of copper, and the negative electrode active material layer may include a negative electrode active material. The negative electrode active material may be carbon or silicon. The material of the isolator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.
电池在不同的环境温度下会呈现不同的电循环性能，当环境温度过高或过低时，都会导致电池的循环性能下降，甚至引起其使用寿命缩短。为了保证新能源汽车安全、性能稳定、优异地运行，必须对电池进行有效的热管理，控制电池始终工作在合适的温度范围内。Batteries will show different electrical cycle performance under different ambient temperatures. When the ambient temperature is too high or too low, the cycle performance of the battery will decrease and even its service life will be shortened. In order to ensure the safety, stable performance and excellent operation of new energy vehicles, effective thermal management of the battery must be carried out to control the battery to always operate within a suitable temperature range.
发明人尝试在电池的多个电池单体的下侧设置热管理部件，热管理部件可用于与多个电池单体进行换热，以对电池进行有效的热管理，使电池单体工作在合适的温度范围内。然而，发明人注意到，热管理部件会占用较大的空间，造成电池的能量密度偏低。The inventor tried to install thermal management components on the underside of multiple battery cells of the battery. The thermal management components can be used to exchange heat with the multiple battery cells to effectively manage the heat of the battery and make the battery cells work at the appropriate temperature. within the temperature range. However, the inventor noticed that the thermal management components would occupy a larger space, resulting in a low energy density of the battery.
鉴于此，本申请实施例提供了一种电池，其将第一电池单体和多个第二电池单体混合排布，并利用第二电池单体之间的空隙来设置热管理部件，以改善第一电池单体的循环性能，提高电池的空间利用率和能量密度。In view of this, embodiments of the present application provide a battery in which a first battery cell and a plurality of second battery cells are mixedly arranged, and the gaps between the second battery cells are used to provide thermal management components. Improve the cycle performance of the first battery cell and increase the space utilization and energy density of the battery.
本申请实施例描述的技术方案适用于使用电池的用电装置。The technical solutions described in the embodiments of this application are applicable to electrical devices using batteries.
用电装置可以是车辆、手机、便携式设备、笔记本电脑、轮船、航天器、电动玩具和电动工具等等。车辆可以是燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等；航天器包括飞机、火箭、航天飞机和宇宙飞船等等；电动玩具包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等；电动工具包括金属切削电动工具、研磨电动工具、装配电动工具和铁道用电动工具，例如，电钻、电动砂轮机、电动扳手、电动螺丝刀、电锤、冲击电钻、混凝土振动器和电刨等等。本申请实施例对上述用电装置不做特殊限制。Electrical devices can be vehicles, cell phones, portable devices, laptops, ships, spacecraft, electric toys and power tools, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.; spacecraft include aircraft, rockets, space shuttles, spaceships, etc.; electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, planers and more. The embodiments of this application impose no special restrictions on the above-mentioned electrical devices.
以下实施例为了方便说明，以用电装置为车辆为例进行说明。For convenience of explanation, the following embodiments take the electrical device as a vehicle as an example.
图1为本申请一些实施例提供的车辆的结构示意图。Figure 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
如图1所示，车辆1的内部设置有电池2，电池2可以设置在车辆1的底部或头部或尾部。电池2可以用于车辆1的供电，例如，电池2可以作为车辆1的操作电源。As shown in FIG. 1 , a battery 2 is provided inside the vehicle 1 , and the battery 2 can be provided at the bottom, head, or tail of the vehicle 1 . The battery 2 may be used to power the vehicle 1 , for example, the battery 2 may be used as an operating power source for the vehicle 1 .
车辆1还可以包括控制器3和马达4，控制器3用来控制电池2为马达4供电，例如，用于车辆1的启动、导航和行驶时的工作用电需求。The vehicle 1 may also include a controller 3 and a motor 4. The controller 3 is used to control the battery 2 to provide power to the motor 4, for example, to meet the power requirements for starting, navigation and driving of the vehicle 1.
在本申请一些实施例中，电池2不仅仅可以作为车辆1的操作电源，还可以作为车辆1的驱动电源，代替或部分地代替燃油或天然气为车辆1提供驱动动力。In some embodiments of the present application, the battery 2 can not only be used as the operating power source of the vehicle 1, but also can be used as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.
图2为本申请一些实施例提供的电池的***示意图。Figure 2 is an exploded schematic diagram of a battery provided by some embodiments of the present application.
如图2所示，电池2包括箱体5和电池单体(图2未示出)，电池单体容纳于箱体5内。As shown in FIG. 2 , the battery 2 includes a case 5 and a battery cell (not shown in FIG. 2 ), and the battery cell is accommodated in the case 5 .
箱体5用于容纳电池单体，箱体5可以是多种结构。在一些实施例中，箱体5可以包括第一箱体部5a和第二箱体部5b，第一箱体部5a与第二箱体部5b相互盖合， 第一箱体部5a和第二箱体部5b共同限定出用于容纳电池单体的容纳空间5c。第二箱体部5b可以是一端开口的空心结构，第一箱体部5a为板状结构，第一箱体部5a盖合于第二箱体部5b的开口侧，以形成具有容纳空间5c的箱体5；第一箱体部5a和第二箱体部5b也均可以是一侧开口的空心结构，第一箱体部5a的开口侧盖合于第二箱体部5b的开口侧，以形成具有容纳空间5c的箱体5。当然，第一箱体部5a和第二箱体部5b可以是多种形状，比如，圆柱体、长方体等。The box 5 is used to accommodate battery cells, and the box 5 can be of various structures. In some embodiments, the box body 5 may include a first box body part 5a and a second box body part 5b. The first box body part 5a and the second box body part 5b cover each other. The first box body part 5a and the second box body part 5b cover each other. The two box portions 5b jointly define an accommodating space 5c for accommodating battery cells. The second box part 5b can be a hollow structure with one end open, and the first box part 5a is a plate-like structure. The first box part 5a is covered with the opening side of the second box part 5b to form a receiving space 5c. The box body 5; the first box body part 5a and the second box body part 5b can also be a hollow structure with one side open, and the opening side of the first box body part 5a is covered with the opening side of the second box body part 5b , to form a box 5 having an accommodation space 5c. Of course, the first box part 5a and the second box part 5b can be in various shapes, such as cylinder, rectangular parallelepiped, etc.
为提高第一箱体部5a与第二箱体部5b连接后的密封性，第一箱体部5a与第二箱体部5b之间也可以设置密封件，比如，密封胶、密封圈等。In order to improve the sealing performance after the first box part 5a and the second box part 5b are connected, a sealing member may also be provided between the first box part 5a and the second box part 5b, such as sealant, sealing ring, etc. .
假设第一箱体部5a盖合于第二箱体部5b的顶部，第一箱体部5a亦可称之为上箱盖，第二箱体部5b亦可称之为下箱体。Assuming that the first box part 5a is covered with the top of the second box part 5b, the first box part 5a can also be called an upper box cover, and the second box part 5b can also be called a lower box.
在电池2中，电池单体为多个，多个电池单体之间可串联或并联或混联，混联是指多个电池单体中既有串联又有并联。多个电池单体之间可直接串联或并联或混联在一起，再将多个电池单体构成的整体容纳于箱体5内；当然，也可以是多个电池单体先串联或并联或混联组成电池模块6，多个电池模块6再串联或并联或混联形成一个整体，并容纳于箱体5内。In the battery 2, there are multiple battery cells, and the multiple battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series or parallel or mixed together, and then the whole composed of multiple battery cells can be accommodated in the box 5; of course, multiple battery cells can also be connected in series or parallel first or A battery module 6 is formed by a mixed connection, and multiple battery modules 6 are connected in series, parallel, or mixed to form a whole, and are accommodated in the box 5 .
图3为本申请一些实施例提供的电池的结构示意图；图4为图3所示电池的一部分的结构示意图；图5为图4所示的第一电池单体的剖视示意图；图6为图4所示的第二电池单体的剖视示意图；图7为图4所示的电池的剖视示意图。Figure 3 is a schematic structural diagram of a battery provided by some embodiments of the present application; Figure 4 is a schematic structural diagram of a part of the battery shown in Figure 3; Figure 5 is a schematic cross-sectional view of the first battery cell shown in Figure 4; Figure 6 FIG. 4 is a schematic cross-sectional view of the second battery cell; FIG. 7 is a schematic cross-sectional view of the battery shown in FIG. 4 .
如图3至图7所示，本申请实施例提供了一种电池2，其包括第一电池单体10、电池单元20和热管理部件30。电池单元20与第一电池单体10沿第一方向X堆叠，电池单元20包括沿第二方向Y布置的多个第二电池单体40，第二方向Y与第一方向X相交。在第二方向Y上，电池单元20的至少两个第二电池单体40之间设有空隙G。热管理部件30的至少部分容纳于空隙G并用于与第一电池单体10换热。As shown in FIGS. 3 to 7 , embodiments of the present application provide a battery 2 that includes a first battery cell 10 , a battery unit 20 and a thermal management component 30 . The battery unit 20 is stacked with the first battery unit 10 along a first direction X, and the battery unit 20 includes a plurality of second battery units 40 arranged along a second direction Y that intersects the first direction X. In the second direction Y, a gap G is provided between at least two second battery cells 40 of the battery unit 20 . At least part of the thermal management component 30 is accommodated in the gap G and used to exchange heat with the first battery cell 10 .
第一电池单体10可以是一个，也可以是多个，本实施例对此不作限制。示例性地，第一电池单体10为多个。There may be one first battery cell 10 or multiple first battery cells 10 , which is not limited in this embodiment. For example, there are multiple first battery cells 10 .
电池单元20可以是一个，也可以是多个，本实施例对此不作限制。示例性地，电池单元20为多个。The battery unit 20 may be one or multiple, which is not limited in this embodiment. By way of example, there are a plurality of battery units 20 .
在一些示例中，第一电池单体10和电池单元20均为多个，多个电池单元20和多个第一电池单体10沿第一方向X堆叠。本示例对电池单元20和第一电池单体10堆叠的顺序不作限定，例如，可以是多个电池单元20和多个第一电池单体10沿第一方向X交替布置，也可以是多个电池单元20连续布置、多个第一电池单体10连续布置，还可以是以其它布置方式布置电池单元20和第一电池单体10。In some examples, there are a plurality of first battery cells 10 and a plurality of battery cells 20 , and the plurality of battery cells 20 and the plurality of first battery cells 10 are stacked along the first direction X. This example does not limit the order in which the battery units 20 and the first battery cells 10 are stacked. For example, multiple battery units 20 and multiple first battery cells 10 may be alternately arranged along the first direction X, or there may be multiple The battery units 20 are continuously arranged, and the plurality of first battery cells 10 are arranged continuously. The battery units 20 and the first battery cells 10 may also be arranged in other arrangements.
多个电池单元20的第二电池单体40的数量可以相同，也可以不相同。The number of second battery cells 40 in the plurality of battery units 20 may be the same or different.
在本实施例中，第二方向Y和第一方向X彼此不平行，两者之间形成夹角。In this embodiment, the second direction Y and the first direction X are not parallel to each other, and form an included angle therebetween.
第一电池单体10和第二电池单体40可以是采用相同的化学体系，也可以采用不同的化学体系。化学体系针对的是电池单体的正极活性物质。示例性地，第一电池单体10可以是钠离子电池单体、锂离子电池单体、镁离子电池单体或其它金属离子电池单体，第二电池单体40可以是钠离子电池单体、锂离子电池单体、镁离子电池单体 或其它金属离子电池单体。锂离子电池单体包括但不限于锂镍钴锰体系电池单体、磷酸铁锂系电池单体、钴酸锂系电池单体、磷酸锰铁锂系电池单体、镍酸锂系电池单体或其它体系的电池单体。The first battery cell 10 and the second battery cell 40 may use the same chemical system, or they may use different chemical systems. The chemical system targets the positive active material of the battery cell. For example, the first battery cell 10 may be a sodium ion battery cell, a lithium ion battery cell, a magnesium ion battery cell or other metal ion battery cell, and the second battery cell 40 may be a sodium ion battery cell. , lithium-ion battery cells, magnesium-ion battery cells or other metal-ion battery cells. Lithium-ion battery cells include, but are not limited to, lithium nickel cobalt manganese system battery cells, lithium iron phosphate battery cells, lithium cobalt oxide battery cells, lithium manganese iron phosphate battery cells, and lithium nickel oxide battery cells. Or battery cells of other systems.
在两个相邻的第二电池单体40中，在第二方向Y上，空隙G将一个第二电池单体40的至少部分与另一个第二电池单体40的至少部分隔开。换言之，一个第二电池单体40沿第二方向Y面向另一个第二电池单体40的表面的至少部分与另一个第二电池单体40间隔开，以形成所述空隙G。Among two adjacent second battery cells 40 , in the second direction Y, the gap G separates at least part of one second battery cell 40 from at least part of the other second battery cell 40 . In other words, at least part of the surface of one second battery cell 40 facing the other second battery cell 40 along the second direction Y is spaced apart from the other second battery cell 40 to form the gap G.
在一些示例中，在两个相邻的第二电池单体40中，在第二方向Y上，空隙G仅将一个第二电池单体40的一部分与另一个第二电池单体40隔开；也就是说，两个相邻的第二电池单体40可以存在接触。在另一些示例中，在两个相邻的第二电池单体40中，在第二方向Y上，空隙G将一个第二电池单体40与另一个第二电池单体40完全隔开，也就是说，两个相邻的第二电池单体40不接触。In some examples, among two adjacent second battery cells 40 , the gap G only separates a part of one second battery cell 40 from the other second battery cell 40 in the second direction Y. ; That is to say, two adjacent second battery cells 40 may be in contact. In other examples, among two adjacent second battery cells 40, the gap G completely separates one second battery cell 40 from another second battery cell 40 in the second direction Y, That is to say, two adjacent second battery cells 40 are not in contact.
热管理部件30可用于与第一电池单体10换热，以调节第一电池单体10的温度。热管理部件30可仅用于与第一电池单体10换，也可同时与第一电池单体10和第二电池单体40进行换热。The thermal management component 30 may be used to exchange heat with the first battery cell 10 to adjust the temperature of the first battery cell 10 . The thermal management component 30 may only be used to exchange heat with the first battery cell 10 , or may simultaneously exchange heat with the first battery cell 10 and the second battery cell 40 .
当第一电池单体10的温度过高时，热管理部件30可以冷却第一电池单体10，以降低第一电池单体10的温度。当第一电池单体10的温度过低时，热管理部件30可以加热第一电池单体10，以提高第一电池单体10的温度。When the temperature of the first battery cell 10 is too high, the thermal management component 30 may cool the first battery cell 10 to lower the temperature of the first battery cell 10 . When the temperature of the first battery cell 10 is too low, the thermal management component 30 may heat the first battery cell 10 to increase the temperature of the first battery cell 10 .
本实施例对热管理部件30的结构不作限制，只要其能够实现换热功能即可。示例性地，热管理部件30内部设有供换热介质流动的流道，换热介质从流道流过时，通过热管理部件30与第一电池单体10换热，以调节第一电池单体10的温度。可选地，换热介质可为液体或气体，例如，换热介质可为水。This embodiment does not limit the structure of the thermal management component 30 as long as it can achieve the heat exchange function. Exemplarily, the thermal management component 30 is provided with a flow channel for the heat exchange medium to flow. When the heat exchange medium flows through the flow channel, it exchanges heat with the first battery cell 10 through the thermal management component 30 to adjust the first battery cell. Body 10 temperature. Alternatively, the heat exchange medium may be a liquid or a gas, for example, the heat exchange medium may be water.
在本实施例中，可以是热管理部件30的一部分容纳于空隙G，也可以是热管理部件30整体容纳于空隙G。In this embodiment, a part of the thermal management component 30 may be accommodated in the gap G, or the entire thermal management component 30 may be accommodated in the gap G.
热管理部件30可以填充空隙G的一部分，也可以将空隙G填满。The thermal management component 30 may fill part of the gap G, or may fill the gap G entirely.
在本实施例中，热管理部件30的至少部分容纳于第二电池单体40之间的空隙G，以提高空间利用率，使电池2的结构更为紧凑，进而提高电池2的能量密度。热管理部件30可以调节第一电池单体10的温度，从而改善电池2的循环性能。热管理部件30的容纳于空隙G的部分还可以对第二电池单体40进行限位和缓冲，降低第二电池单体40沿第二方向Y偏移的风险。In this embodiment, at least part of the thermal management component 30 is accommodated in the gap G between the second battery cells 40 to improve space utilization, make the structure of the battery 2 more compact, and thereby increase the energy density of the battery 2 . The thermal management component 30 can adjust the temperature of the first battery cell 10 to improve the cycle performance of the battery 2 . The portion of the thermal management component 30 accommodated in the gap G can also limit and buffer the second battery cell 40 to reduce the risk of the second battery cell 40 being displaced in the second direction Y.
在一些实施例中，在第一方向X上，各第二电池单体40与第一电池单体10至少部分地重叠。由于各第二电池单体40在第一方向X上均存在与第一电池单体10重叠的部分，所以各第二电池单体40均能够在第一方向X上限制第一电池单体10的变形，以改善第一电池单体10的形貌，提高电池2的整体强度。In some embodiments, in the first direction X, each second battery cell 40 at least partially overlaps the first battery cell 10 . Since each second battery cell 40 has a portion that overlaps the first battery cell 10 in the first direction X, each second battery cell 40 can restrict the first battery cell 10 in the first direction X. deformation to improve the morphology of the first battery cell 10 and increase the overall strength of the battery 2.
第一电池单体10沿第二方向Y的尺寸大于第二电池单体40沿第二方向Y的尺寸，以使各第二电池单体40均存在与第一电池单体10在第一方向X上重叠的部分。The size of the first battery cell 10 along the second direction Y is larger than the size of the second battery cell 40 along the second direction Y, so that each second battery cell 40 is aligned with the first battery cell 10 in the first direction. The overlapping portion of X.
在一些实施例中，第一电池单体10和第二电池单体40具有不同的形状，可以使空隙G的形状、尺寸的设置更为灵活。示例性地，第一电池单体10可为方形电池单 体，第二电池单体40可为圆柱电池单体、六棱柱电池单体、椭圆柱电池单体或其它形状的电池单体。In some embodiments, the first battery cell 10 and the second battery cell 40 have different shapes, which can make the shape and size of the gap G more flexible. For example, the first battery cell 10 may be a square battery cell, and the second battery cell 40 may be a cylindrical battery cell, a hexagonal prism battery cell, an elliptical column battery cell, or a battery cell of other shapes.
在一些实施例中，第一电池单体10为方形电池单体，第二电池单体40为圆柱电池单体。In some embodiments, the first battery cell 10 is a square battery cell, and the second battery cell 40 is a cylindrical battery cell.
方形电池单体的外壳大体呈长方体状，圆柱电池单体的外壳大体呈圆柱体状。圆柱电池单体具有圆柱面。当多个圆柱电池单体沿第二方向Y布置时，相邻的电池单体的圆柱面之间会形成空隙G。The casing of the square battery cell is generally in the shape of a rectangular parallelepiped, and the casing of the cylindrical battery cell is generally in the shape of a cylinder. Cylindrical battery cells have cylindrical surfaces. When multiple cylindrical battery cells are arranged along the second direction Y, gaps G will be formed between the cylindrical surfaces of adjacent battery cells.
圆柱电池单体和方形电池单体混合排布时，圆柱电池单体之间的空隙G可以为热管理部件30提供空间，进而提高空间利用率，并改善方形电池单体的循环性能。When cylindrical battery cells and prismatic battery cells are mixedly arranged, the gaps G between the cylindrical battery cells can provide space for the thermal management component 30 , thereby improving space utilization and improving the cycle performance of the prismatic battery cells.
在布置圆柱电池单体和方形电池单体时，使圆柱电池单体的轴向垂直于第一方向X和第二方向Y，这样，圆柱电池单体与方形电池单体的接触为线接触，可以减小圆柱电池单体和方形电池单体之间的热传递面积，降低圆柱电池单体与方形电池单体之间的热传递速率。When arranging the cylindrical battery cells and the square battery cells, make the axial direction of the cylindrical battery cells perpendicular to the first direction X and the second direction Y. In this way, the contact between the cylindrical battery cells and the square battery cells is line contact. It can reduce the heat transfer area between cylindrical battery cells and prismatic battery cells, and reduce the heat transfer rate between cylindrical battery cells and prismatic battery cells.
在一些实施例中，第一方向X垂直于第二方向Y。本实施例不要求第二方向Y与第一方向X绝对垂直，允许存在一定的误差。示例性地，当第二方向Y与第一方向X之间的角度为80°-100°时，可认为第一方向X垂直于第二方向Y。In some embodiments, the first direction X is perpendicular to the second direction Y. This embodiment does not require the second direction Y to be absolutely perpendicular to the first direction X, and a certain error is allowed. For example, when the angle between the second direction Y and the first direction X is 80°-100°, the first direction X can be considered to be perpendicular to the second direction Y.
在一些实施例中，第二电池单体40沿第三方向Z的尺寸D3大于第二电池单体40沿第一方向X的尺寸D1，第二电池单体40沿第三方向Z的尺寸D3大于第二电池单体40沿第二方向Y的尺寸D2，第一方向X、第二方向Y以及第三方向Z两两垂直。可选地，第二电池单体40为圆柱电池单体，D1和D2相等且为圆柱电池单体的直径。In some embodiments, the size D3 of the second battery cell 40 along the third direction Z is greater than the size D1 of the second battery cell 40 along the first direction X, and the size D3 of the second battery cell 40 along the third direction Z Greater than the dimension D2 of the second battery cell 40 along the second direction Y, the first direction X, the second direction Y, and the third direction Z are two perpendicular to each other. Optionally, the second battery cell 40 is a cylindrical battery cell, and D1 and D2 are equal and are the diameters of the cylindrical battery cells.
本实施例可以使空隙G在第三方向Z上具有较大的尺寸，以为热管理部件30提供更多的空间。This embodiment can make the gap G have a larger size in the third direction Z to provide more space for the thermal management component 30 .
在一些实施例中，在一些实施例中，第一电池单体10包括第一外壳11和容纳于第一外壳11内的第一电极组件12。第一外壳11为空心结构，其内部形成用于容纳第一电极组件12和电解液的容纳腔。第一外壳11可以使多种形状，示例性地，第一外壳11为长方体状。In some embodiments, the first battery cell 10 includes a first housing 11 and a first electrode assembly 12 accommodated in the first housing 11 . The first housing 11 has a hollow structure, and an accommodation cavity for accommodating the first electrode assembly 12 and the electrolyte is formed inside. The first housing 11 can have various shapes. For example, the first housing 11 is in the shape of a rectangular parallelepiped.
在一些实施例中，第一外壳11包括第一壳体111和第一端盖112，第一壳体111具有开口，第一端盖112用于盖合第一壳体111的开口。In some embodiments, the first housing 11 includes a first housing 111 and a first end cover 112. The first housing 111 has an opening, and the first end cover 112 is used to cover the opening of the first housing 111.
在一些实施例中，第二电池单体40包括第二外壳41和容纳于第二外壳41内的第二电极组件42。第二外壳41为空心结构，其内部形成用于容纳第二电极组件42和电解液的容纳腔。第二外壳41可以使多种形状，示例性地，第二外壳41为圆柱体状。In some embodiments, the second battery cell 40 includes a second housing 41 and a second electrode assembly 42 accommodated in the second housing 41 . The second housing 41 has a hollow structure, and an accommodation cavity for accommodating the second electrode assembly 42 and the electrolyte is formed inside. The second housing 41 can have various shapes. For example, the second housing 41 is cylindrical.
在一些实施例中，第二外壳41包括第二壳体411和第二端盖412，第二壳体411具有开口，第二端盖412用于盖合第二壳体411的开口。In some embodiments, the second housing 41 includes a second housing 411 and a second end cover 412. The second housing 411 has an opening, and the second end cover 412 is used to cover the opening of the second housing 411.
第一电极组件12和第二电极组件42均包括正极极片、负极极片和隔离件，隔离件用于将正极极片和负极极片绝缘隔离。电极组件主要依靠金属离子在正极极片和负极极片之间移动来工作。Both the first electrode assembly 12 and the second electrode assembly 42 include a positive electrode piece, a negative electrode piece and a separator, and the separator is used to insulate and isolate the positive electrode piece and the negative electrode piece. The electrode assembly mainly relies on the movement of metal ions between the positive and negative electrode plates to work.
在一些实施例中，第一电池单体10包括第一外壳11，第二电池单体40包括第二外壳41。第一外壳11沿第三方向Z的尺寸D4等于第二外壳41沿第三方向Z的尺寸 D5，这样可以改善第一电池单体10和第二电池单体40在第三方向Z上的尺寸的一致性，便于实现第一电池单体10和第二电池单体40的排布。In some embodiments, the first battery cell 10 includes a first housing 11 and the second battery cell 40 includes a second housing 41 . The size D4 of the first housing 11 along the third direction Z is equal to the size D5 of the second housing 41 along the third direction Z. This can improve the size of the first battery cell 10 and the second battery cell 40 in the third direction Z. The consistency facilitates the arrangement of the first battery cells 10 and the second battery cells 40 .
在一些实施例中，第一电池单体10还包括设置于第一外壳11的第一电极端子13和第二电极端子14。第一电极端子13和第二电极端子14中的一者电连接于第一电极组件12的正极极片，另一者电连接于第一电极组件12的负极极片。第一电极端子13和第二电极端子14用于将第一电极组件12与外部电路电连接，以实现第一电极组件12的充电和放电。In some embodiments, the first battery cell 10 further includes a first electrode terminal 13 and a second electrode terminal 14 disposed on the first housing 11 . One of the first electrode terminal 13 and the second electrode terminal 14 is electrically connected to the positive electrode tab of the first electrode assembly 12 , and the other is electrically connected to the negative electrode tab of the first electrode assembly 12 . The first electrode terminal 13 and the second electrode terminal 14 are used to electrically connect the first electrode assembly 12 with an external circuit to realize charging and discharging of the first electrode assembly 12 .
在一些实施例中，第一电极端子13和第二电极端子14可以设置于第一外壳11的同一侧，也可以分别设置在第一外壳11的相反的两侧。In some embodiments, the first electrode terminal 13 and the second electrode terminal 14 may be disposed on the same side of the first housing 11 , or may be disposed on opposite sides of the first housing 11 respectively.
在一些实施例中，第二电池单体40还包括设置于第二外壳41的第三电极端子43和第四电极端子44。第三电极端子43和第四电极端子44中的一者电连接于第二电极组件42的正极极片，另一者电连接于第二电极组件42的负极极片。第三电极端子43和第四电极端子44用于将第二电极组件42与外部电路电连接，以实现第二电极组件42的充电和放电。In some embodiments, the second battery cell 40 further includes a third electrode terminal 43 and a fourth electrode terminal 44 provided on the second housing 41 . One of the third electrode terminal 43 and the fourth electrode terminal 44 is electrically connected to the positive electrode tab of the second electrode assembly 42 , and the other is electrically connected to the negative electrode tab of the second electrode assembly 42 . The third electrode terminal 43 and the fourth electrode terminal 44 are used to electrically connect the second electrode assembly 42 with an external circuit to realize charging and discharging of the second electrode assembly 42 .
在一些实施例中，第三电极端子43和第四电极端子44可以设置于第二外壳41的同一侧，也可以分别设置在第二外壳41的相反的两侧。In some embodiments, the third electrode terminal 43 and the fourth electrode terminal 44 may be disposed on the same side of the second housing 41 , or may be disposed on opposite sides of the second housing 41 respectively.
在一些实施例中，第一外壳11包括沿第一方向X相对设置的两个第一表面11a、沿第二方向Y相对设置的两个第二表面11b以及沿第三方向Z相对设置的两个第三表面11c。可选地，第一表面11a、第二表面11b和第三表面11c均为平面。可选地，第一表面11a的面积大于第二表面11b的面积、第一表面11a的面积大于第三表面11c的面积。In some embodiments, the first housing 11 includes two first surfaces 11a oppositely arranged along the first direction X, two second surfaces 11b oppositely arranged along the second direction Y, and two oppositely arranged second surfaces 11b along the third direction Z. a third surface 11c. Optionally, the first surface 11a, the second surface 11b and the third surface 11c are all flat. Optionally, the area of the first surface 11a is larger than the area of the second surface 11b, and the area of the first surface 11a is larger than the area of the third surface 11c.
在一些实施例中，与电池单元20相邻的第一电池单体10从空隙G沿第一方向X的一侧覆盖空隙G。In some embodiments, the first battery cell 10 adjacent to the battery unit 20 covers the gap G from one side of the gap G along the first direction X.
在一些实施例中，第一电池单体10具有沿第一方向X相对设置的两个第一表面11a，电池单元20的多个第二电池单体40与第一表面11a相连接。热管理部件30连接于第一表面11a。In some embodiments, the first battery cell 10 has two first surfaces 11a arranged oppositely along the first direction X, and the plurality of second battery cells 40 of the battery unit 20 are connected to the first surfaces 11a. The thermal management component 30 is connected to the first surface 11a.
第二电池单体40可以与第一表面11a直接连接，也可以通过其它结构与第一表面11a间接连接。示例性地，第二电池单体40通过抵接、粘接或其它方式连接于第一表面11a。The second battery cell 40 may be directly connected to the first surface 11a, or may be indirectly connected to the first surface 11a through other structures. For example, the second battery cell 40 is connected to the first surface 11a by abutting, bonding or other means.
热管理部件30可以与第一表面11a直接连接，也可以通过其它结构与第一表面11a间接连接。The thermal management component 30 may be directly connected to the first surface 11a, or may be indirectly connected to the first surface 11a through other structures.
在本实施例中，可以是仅一个第一表面11a上连接有热管理部件30和第二电池单体40，也可以是两个第一表面11a上均连接有热管理部件30和第二电池单体40。In this embodiment, the thermal management component 30 and the second battery cell 40 may be connected to only one first surface 11a, or the thermal management component 30 and the second battery may be connected to both first surfaces 11a. Single unit 40.
热管理部件30与第一电池单体10的面积较大的第一表面11a相连接，可以提高换热效率。The thermal management component 30 is connected to the larger first surface 11a of the first battery cell 10, which can improve the heat exchange efficiency.
多个第二电池单体40与第一表面11a相连接，可提高电池2整体的结构强度。热管理部件30与第一表面11a换热，以调节第一电池单体10的温度。The plurality of second battery cells 40 are connected to the first surface 11a, which can improve the overall structural strength of the battery 2. The thermal management component 30 exchanges heat with the first surface 11a to adjust the temperature of the first battery cell 10.
在一些实施例中，第一表面11a为平面。第二电池单体40的外表面40a的至少 部分为弧形面，弧形面用于与第一表面11a连接。在第二方向Y上，两个相邻的第二电池单体40的弧形面之间形成空隙G。In some embodiments, first surface 11a is planar. At least part of the outer surface 40a of the second battery cell 40 is an arcuate surface, and the arcuate surface is used to connect with the first surface 11a. In the second direction Y, a gap G is formed between the arcuate surfaces of two adjacent second battery cells 40 .
弧形面可以是椭圆弧面、圆柱面、球面或其它弧形曲面。可选地，弧形面为圆柱面。The arc surface can be an elliptical arc surface, a cylindrical surface, a sphere or other arc surface. Optionally, the arc surface is a cylindrical surface.
弧形面可以直接与第一表面11a相抵接，也可以通过其它结构连接于第一表面11a。示例性地，弧形面可通过胶体粘接于第一表面11a。The arcuate surface may directly contact the first surface 11a, or may be connected to the first surface 11a through other structures. For example, the curved surface may be bonded to the first surface 11a through colloid.
当弧形面与第一表面11a接触时，两者近似为线接触或点接触，本实施例使弧形面与第一表面11a相连接，可以减小第一电池单体10与第二电池单体40之间的热传递面积，降低第一电池单体10与第二电池单体40之间的热传递速率，当某个电池单体出现热失控时，降低热扩散的风险，提高电池2的安全性。When the arcuate surface contacts the first surface 11a, the two are approximately in line contact or point contact. In this embodiment, the arcuate surface is connected to the first surface 11a, which can reduce the distance between the first battery cell 10 and the second battery. The heat transfer area between the cells 40 reduces the heat transfer rate between the first battery cell 10 and the second battery cell 40. When a certain battery cell experiences thermal runaway, it reduces the risk of heat diffusion and improves battery performance. 2 security.
在一些实施例中，热管理部件30粘接于第一表面11a，以使热管理部件30与第一电池单体10稳定连接，实现热管理部件30与第一电池单体10的稳定换热。In some embodiments, the thermal management component 30 is bonded to the first surface 11 a to stably connect the thermal management component 30 to the first battery cell 10 and achieve stable heat exchange between the thermal management component 30 and the first battery cell 10 .
示例性地，热管理部件30通过导热胶粘接于第一表面11a。Illustratively, the thermal management component 30 is bonded to the first surface 11a through thermally conductive glue.
在一些实施例中，热管理部件30的容纳于空隙G的部分还可用于与第二电池单体40换热。In some embodiments, the portion of the thermal management component 30 accommodated in the gap G may also be used to exchange heat with the second battery cell 40 .
热管理部件30能够同时调节第一电池单体10和第二电池单体40的温度，以改善第一电池单体10和第二电池单体40循环性能的一致性。The thermal management component 30 can simultaneously adjust the temperatures of the first battery cell 10 and the second battery cell 40 to improve the consistency of cycle performance of the first battery cell 10 and the second battery cell 40 .
在一些实施例中，热管理部件30通过导热胶连接于第二电池单体40。热管理部件30通过导热胶与第二电池单体40换热，以调节第二电池单体40的温度。热管理部件30还能够通过导热胶对第二电池单体40进行限位，以降低第二电池单体40在受到外部冲击时偏移的风险。In some embodiments, the thermal management component 30 is connected to the second battery cell 40 through thermally conductive glue. The thermal management component 30 exchanges heat with the second battery cell 40 through thermal conductive glue to adjust the temperature of the second battery cell 40 . The thermal management component 30 can also limit the position of the second battery cell 40 through thermally conductive glue, so as to reduce the risk of the second battery cell 40 being deflected when subjected to external impact.
在一些实施例中，导热胶具有一定的弹性。当电池2受到外部冲击时，导热胶可以弹性变形，以起到缓冲作用，降低第二电池单体40破损的风险。In some embodiments, the thermally conductive adhesive has certain elasticity. When the battery 2 is impacted by an external impact, the thermally conductive adhesive can elastically deform to play a buffering role and reduce the risk of damage to the second battery cell 40 .
在一些实施例中，在电池单元20中，任意相邻的两个第二电池单体40彼此连接。本实施例可以提高电池单元20整体的结构强度，降低第二电池单体40晃动的风险。In some embodiments, in the battery unit 20, any two adjacent second battery cells 40 are connected to each other. This embodiment can improve the overall structural strength of the battery unit 20 and reduce the risk of the second battery unit 40 shaking.
在一些实施例中，任意相邻的两个第二电池单体40通过胶体粘接。In some embodiments, any two adjacent second battery cells 40 are bonded by colloid.
在一些实施例中，第一电池单体10为锂离子电池单体，第二电池单体40为钠离子电池单体。In some embodiments, the first battery cell 10 is a lithium-ion battery cell, and the second battery cell 40 is a sodium-ion battery cell.
相较于锂离子电池单体，钠离子电池单体具有更好的耐低温性能、耐针刺性能、耐挤压性能以及其它安全性能。相较于钠离子电池单体，锂离子电池单体具有更高的能量密度。Compared with lithium-ion battery cells, sodium-ion battery cells have better low-temperature resistance, needle puncture resistance, extrusion resistance and other safety properties. Compared with sodium-ion battery cells, lithium-ion battery cells have higher energy density.
在本实施例中，第一电池单体10采用锂离子电池单体，以保证电池2的能量密度。第二电池单体40采用钠离子电池单体，以降低第二电池单体40在受到第一电池单体10的挤压时失效的风险。本实施例通过将锂离子电池单体和钠离子电池单体装配成组，可以平衡电池2的能量密度和安全性。In this embodiment, the first battery cell 10 is a lithium-ion battery cell to ensure the energy density of the battery 2 . The second battery cell 40 uses a sodium ion battery cell to reduce the risk of failure of the second battery cell 40 when it is squeezed by the first battery cell 10 . In this embodiment, the energy density and safety of the battery 2 can be balanced by assembling lithium-ion battery cells and sodium-ion battery cells into a group.
在一些实施例中，第一电池单体10为三元锂电池单体，第二电池单体40为钠离子电池单体或磷酸铁锂电池单体。In some embodiments, the first battery cell 10 is a ternary lithium battery cell, and the second battery cell 40 is a sodium ion battery cell or a lithium iron phosphate battery cell.
相较于钠离子电池单体和磷酸铁锂电池单体，三元锂电池单体具有更高的能量密度。相较于三元锂电池单体，钠离子电池单体和磷酸铁锂电池单体的安全性更好。Compared with sodium-ion battery cells and lithium iron phosphate battery cells, ternary lithium battery cells have higher energy density. Compared with ternary lithium battery cells, sodium-ion battery cells and lithium iron phosphate battery cells are safer.
在电池单元20中，可以是全部的第二电池单体40均为钠离子电池单体，也可以是全部的第二电池单体40均为磷酸铁锂电池单体，还可以是部分的第二电池单体40为钠离子电池单体，部分的第二电池单体40为磷酸铁锂电池单体。In the battery unit 20, all the second battery cells 40 may be sodium-ion battery cells, or all the second battery cells 40 may be lithium iron phosphate battery cells, or part of the second battery cells 40 may be. The second battery cells 40 are sodium ion battery cells, and part of the second battery cells 40 are lithium iron phosphate battery cells.
在本实施例中，第一电池单体10采用三元锂电池单体，以保证电池2的能量密度。第二电池单体40采用钠离子电池单体或磷酸铁锂电池单体，以降低第二电池单体40在受到第一电池单体10的挤压时失效的风险。本实施例可以平衡电池2的能量密度和安全性。In this embodiment, the first battery cell 10 is a ternary lithium battery cell to ensure the energy density of the battery 2 . The second battery cell 40 uses a sodium ion battery cell or a lithium iron phosphate battery cell to reduce the risk of failure of the second battery cell 40 when it is squeezed by the first battery cell 10 . This embodiment can balance the energy density and safety of the battery 2 .
图8为图4所示的第一电池单体10和热管理部件30的结构示意图；图9为图8所示的热管理部件30的结构示意图。FIG. 8 is a schematic structural diagram of the first battery cell 10 and the thermal management component 30 shown in FIG. 4 ; FIG. 9 is a schematic structural diagram of the thermal management component 30 shown in FIG. 8 .
如图7至图9所示，在一些实施例中，电池单元20的第二电池单体40的数量至少为三个。在电池单元20中，任意两个相邻的第二电池单体40之间设有空隙G。As shown in FIGS. 7 to 9 , in some embodiments, the number of second battery cells 40 of the battery unit 20 is at least three. In the battery unit 20, a gap G is provided between any two adjacent second battery cells 40.
通过设置多个空隙G，可以增大热管理部件30与第一电池单体10之间的换热面积，提高换热效率。By providing multiple gaps G, the heat exchange area between the thermal management component 30 and the first battery cell 10 can be increased, thereby improving the heat exchange efficiency.
在一些实施例中，热管理部件30包括多个沿第二方向Y布置的第一换热管31。各空隙G内设有第一换热管31。In some embodiments, the thermal management component 30 includes a plurality of first heat exchange tubes 31 arranged along the second direction Y. A first heat exchange tube 31 is provided in each gap G.
各空隙G内可以设置一个第一换热管31，也可以同时设置多个第一换热管31。One first heat exchange tube 31 may be provided in each gap G, or multiple first heat exchange tubes 31 may be provided simultaneously.
第一换热管31可以整体容纳于对应的空隙G内，也可仅部分容纳于对应的空隙G内。The first heat exchange tube 31 may be entirely accommodated in the corresponding gap G, or may be only partially accommodated in the corresponding gap G.
各第一换热管31内部具有供换热介质流动的流道。Each first heat exchange tube 31 has a flow channel inside for the heat exchange medium to flow.
本实施例的热管理部件30可根据空隙G的大小、位置灵活地设置第一换热管31。The thermal management component 30 of this embodiment can flexibly arrange the first heat exchange tube 31 according to the size and position of the gap G.
在一些实施例中，各空隙G内设有热管理部件30的一个第一换热管31，这样可以减少第一换热管31的数量，简化热管理部件30的结构。In some embodiments, each gap G is provided with a first heat exchange tube 31 of the thermal management component 30 , which can reduce the number of first heat exchange tubes 31 and simplify the structure of the thermal management component 30 .
在一些实施例中，热管理部件30包括多个第二换热管32，用于将多个第一换热管31连通。In some embodiments, the thermal management component 30 includes a plurality of second heat exchange tubes 32 for communicating the plurality of first heat exchange tubes 31 .
多个第二换热管32将多个第一换热管31连通，以使换热介质可以在多个第一换热管31中流道。The plurality of second heat exchange tubes 32 connect the plurality of first heat exchange tubes 31 so that the heat exchange medium can flow in the plurality of first heat exchange tubes 31 .
在一些实施例中，多个第一换热管31和多个第二换热管32交替连接。In some embodiments, a plurality of first heat exchange tubes 31 and a plurality of second heat exchange tubes 32 are connected alternately.
相邻的两个第一换热管31通过一个第二换热管32相连。多个第二换热管32将多个第一换热管31串联。Two adjacent first heat exchange tubes 31 are connected through a second heat exchange tube 32 . The plurality of second heat exchange tubes 32 connect the plurality of first heat exchange tubes 31 in series.
第一换热管31和第二换热管32可以是一体成型结构或分体结构。在一些示例中，通过多次弯折一个管体，以形成多个第一换热管31和多个第二换热管32。在另一些示例中，第一换热管31和第二换热管32为分开提供的两个构件，且两者通过焊接、接头连接或其它方式连为一体。The first heat exchange tube 31 and the second heat exchange tube 32 may be an integrally formed structure or a separate structure. In some examples, a plurality of first heat exchange tubes 31 and a plurality of second heat exchange tubes 32 are formed by bending a tube body multiple times. In other examples, the first heat exchange tube 31 and the second heat exchange tube 32 are two components provided separately, and the two are integrated by welding, joint connection or other means.
在一些实施例中，第一换热管31沿第三方向Z延伸，第一方向X、第二方向Y以及第三方向Z两两垂直。In some embodiments, the first heat exchange tube 31 extends along the third direction Z, and the first direction X, the second direction Y, and the third direction Z are two perpendicular to each other.
在一些实施例中，热管理部件30的材质包括铜、铝合金和不锈钢中的至少一种。铜、铝合金和不锈钢等材料具有较好的导热性。In some embodiments, the material of the thermal management component 30 includes at least one of copper, aluminum alloy, and stainless steel. Materials such as copper, aluminum alloy and stainless steel have good thermal conductivity.
图10为本申请另一些实施例提供的电池2的热管理部件30的结构示意图。FIG. 10 is a schematic structural diagram of the thermal management component 30 of the battery 2 provided by other embodiments of the present application.
如图10所示，在一些实施例中，第二换热管32设置为两个，两个第二换热管32间隔设置。多个第一换热管31位于两个第二换热管32之间，且各第一换热管31的两端分别连通于两个第二换热管32。两个第二换热管32将多个第一换热管31并联。As shown in FIG. 10 , in some embodiments, two second heat exchange tubes 32 are provided, and the two second heat exchange tubes 32 are spaced apart. The plurality of first heat exchange tubes 31 are located between the two second heat exchange tubes 32, and both ends of each first heat exchange tube 31 are respectively connected to the two second heat exchange tubes 32. The two second heat exchange tubes 32 connect the plurality of first heat exchange tubes 31 in parallel.
在一些实施例中，第一换热管31的截面为三角形、梯形、矩形、半圆形或其它形状。In some embodiments, the cross section of the first heat exchange tube 31 is triangular, trapezoidal, rectangular, semicircular or other shapes.
第一换热管31的截面是指垂直于第一换热管31的轴向的截面。示例性地，第一换热管31沿第三方向Z延伸，第一换热管31的截面垂直于第三方向Z。The cross section of the first heat exchange tube 31 refers to a cross section perpendicular to the axial direction of the first heat exchange tube 31 . For example, the first heat exchange tube 31 extends along the third direction Z, and the cross section of the first heat exchange tube 31 is perpendicular to the third direction Z.
图11为本申请另一些实施例提供的电池2的热管理部件30的第一换热管31的截面的示意图。FIG. 11 is a schematic cross-sectional view of the first heat exchange tube 31 of the thermal management component 30 of the battery 2 provided by other embodiments of the present application.
如图7和11所示，第一电池单体10和两个相邻的第二电池单体40围绕空隙G，第一换热管31的截面的形状与空隙G的截面的形状相匹配。As shown in FIGS. 7 and 11 , the first battery cell 10 and two adjacent second battery cells 40 surround the gap G, and the cross-sectional shape of the first heat exchange tube 31 matches the cross-sectional shape of the gap G.
第一换热管31的截面是指垂直于第一换热管31的轴向的截面。空隙G的截面是指垂直于第一换热管31的轴向的截面。The cross section of the first heat exchange tube 31 refers to a cross section perpendicular to the axial direction of the first heat exchange tube 31 . The cross section of the gap G refers to a cross section perpendicular to the axial direction of the first heat exchange tube 31 .
相匹配指的是第一换热管31的截面的形状与空隙G的的截面形状大体相似。Matching means that the cross-sectional shape of the first heat exchange tube 31 is substantially similar to the cross-sectional shape of the gap G.
本实施例可以根据空隙G的形状来设置第一换热管31的形状，这样可以增大第一换热管31与第一电池单体10之间的换热面积以及第一换热管31与第二电池单体40之间的换热面积，提高换热效率。In this embodiment, the shape of the first heat exchange tube 31 can be set according to the shape of the gap G, which can increase the heat exchange area between the first heat exchange tube 31 and the first battery cell 10 and the first heat exchange tube 31 The heat exchange area with the second battery cell 40 improves the heat exchange efficiency.
图12为本申请另一些实施例提供的电池2的俯视示意图。Figure 12 is a schematic top view of the battery 2 provided by other embodiments of the present application.
如图12所示，在一些实施例中，第一电池单体10设置为多个，电池单元20设置为多个。多个第一电池单体10和多个电池单元20沿第一方向X堆叠。热管理部件30至少用于和与电池单元20相邻的第一电池单体10进行换热。As shown in FIG. 12 , in some embodiments, there are multiple first battery cells 10 and there are multiple battery units 20 . A plurality of first battery cells 10 and a plurality of battery cells 20 are stacked along the first direction X. The thermal management component 30 is at least used to exchange heat with the first battery cell 10 adjacent to the battery unit 20 .
本实施例对多个电池单元20和第一电池单体10堆叠的顺序不作限定，例如，可以是多个电池单元20和多个第一电池单体10沿第一方向X交替布置，也可以是多个电池单元20连续布置、多个第一电池单体10连续布置，还可以是以其它布置方式布置电池单元20和第一电池单体10。This embodiment does not limit the order in which the plurality of battery units 20 and the plurality of first battery cells 10 are stacked. For example, the plurality of battery units 20 and the plurality of first battery cells 10 may be alternately arranged along the first direction X, or they may A plurality of battery units 20 are continuously arranged, and a plurality of first battery cells 10 are arranged continuously. The battery units 20 and the first battery cells 10 may also be arranged in other arrangements.
相邻的电池单元20和第一电池单体10指的是：该电池单元20和该第一电池单体10之间没有其它的电池单元20和第一电池单体10。两个电池单元20相邻是指：这两个电池单元20之间没有其它的电池单元20。两个第一电池单体10相邻是指：这两个第一电池单体10之间没有其它第一电池单体10。The adjacent battery unit 20 and the first battery unit 10 means that there are no other battery units 20 and the first battery unit 10 between the battery unit 20 and the first battery unit 10 . Two battery units 20 being adjacent means that there is no other battery unit 20 between the two battery units 20 . Two first battery cells 10 being adjacent means that there are no other first battery cells 10 between the two first battery cells 10 .
电池单元20设有用于容纳热管理部件30的空隙G，因此，热管理部件30和与电池单元20相邻的第一电池单体10对应设置，以调节对应的第一电池单体10的温度。在本实施例中，可以是部分的与电池单元20相邻的第一电池单体10对应设置有热管理部件30，也可以是全部的与电池单元20相邻的第一电池单体10均对应设置有热管理部件30。The battery unit 20 is provided with a gap G for accommodating the thermal management component 30. Therefore, the thermal management component 30 is provided correspondingly with the first battery cell 10 adjacent to the battery unit 20 to adjust the temperature of the corresponding first battery cell 10. . In this embodiment, some of the first battery cells 10 adjacent to the battery unit 20 may be provided with the thermal management component 30 , or all of the first battery cells 10 adjacent to the battery unit 20 may be provided with the thermal management component 30 . A thermal management component 30 is provided correspondingly.
对于仅一侧设有与其相邻的电池单元20的第一电池单体10，该第一电池单体 10的面向该电池单元20的第一表面11a上连接有热管理部件30。对于两侧均设有与其相邻的电池单元20的第一电池单体10，可以是仅一个第一表面11a上连接有热管理部件30，也可以是两个第一表面11a上均连接有热管理部件30。For the first battery cell 10 having an adjacent battery unit 20 on only one side, a thermal management component 30 is connected to the first surface 11a of the first battery cell 10 facing the battery unit 20. For the first battery cell 10 with adjacent battery units 20 on both sides, the thermal management component 30 may be connected to only one first surface 11 a , or both first surfaces 11 a may be connected to the thermal management component 30 . Thermal Management Component 30.
多个电池单元20和多个第一电池单体10堆叠，可以提高电池2的容量。Stacking multiple battery units 20 and multiple first battery cells 10 can increase the capacity of the battery 2 .
在一些实施例中，任意两个相邻的第一电池单体10之间设有电池单元20。In some embodiments, a battery unit 20 is provided between any two adjacent first battery cells 10 .
在一些实施例中，多个第一电池单体10和多个电池单元20沿第一方向X交替设置。In some embodiments, the plurality of first battery cells 10 and the plurality of battery units 20 are alternately arranged along the first direction X.
任意相邻的两个第一电池单体10之间设有一个电池单元20，任意相邻的两个电池单元20之间设有一个第一电池单体10。One battery unit 20 is disposed between any two adjacent first battery cells 10 , and one first battery cell 10 is disposed between any two adjacent battery cells 20 .
每个第一电池单体10均与电池单元20相邻设置，而容纳于电池单元20的空隙G的热管理部件30可以和与电池单元20相邻的第一电池单体10换热，因此，每个第一电池单体10均可以与热管理部件30换热，这样可以改善多个第一电池单体10的温度一致性。Each first battery cell 10 is disposed adjacent to the battery unit 20 , and the thermal management component 30 accommodated in the gap G of the battery unit 20 can exchange heat with the first battery cell 10 adjacent to the battery unit 20 . Therefore, , each first battery cell 10 can exchange heat with the thermal management component 30 , which can improve the temperature consistency of multiple first battery cells 10 .
在一些实施例中，任意相邻的两个第一电池单体10之间设有热管理部件30。每个第一电池单体10均可以与热管理部件30换热，这样可以改善多个第一电池单体10的温度一致性。In some embodiments, a thermal management component 30 is provided between any two adjacent first battery cells 10 . Each first battery cell 10 can exchange heat with the thermal management component 30 , which can improve the temperature consistency of the plurality of first battery cells 10 .
图13为本申请另一些实施例提供的电池2的***示意图，其中部分的第一电池单体10和第二电池单体40省略；图14为本申请另一些实施例提供的电池2的热管理部件30和汇流管路50的结构示意图；图15为本申请另一些实施例提供的电池2的结构示意图。FIG. 13 is an exploded schematic diagram of the battery 2 provided by other embodiments of the present application, in which part of the first battery cell 10 and the second battery cell 40 is omitted; FIG. 14 is a thermal diagram of the battery 2 provided by other embodiments of the present application. A schematic structural diagram of the management component 30 and the manifold pipeline 50; Figure 15 is a schematic structural diagram of the battery 2 provided by other embodiments of the present application.
请一并参照图13至图15，在一些实施例中，热管理部件30为多个，多个热管理部件30沿第一方向X布置。Please refer to FIGS. 13 to 15 together. In some embodiments, there are multiple thermal management components 30 , and the multiple thermal management components 30 are arranged along the first direction X.
多个热管理部件30可以与多个第一电池单体10换热，从而改善多个第一电池单体10温度的一致性。The plurality of thermal management components 30 can exchange heat with the plurality of first battery cells 10 , thereby improving the temperature consistency of the plurality of first battery cells 10 .
热管理部件30可根据电池单元20的位置和数量设置。 Thermal management component 30 may be provided according to the location and number of battery cells 20 .
热管理部件30的数量与第一电池单体10的数量可以相同，也可以不相同。在一些示例中，热管理部件30的数量与第一电池单体10的数量相同，且热管理部件30和第一电池单体10一一对应设置。在另一些示例中，各第一电池单体10与两个热管理部件30对应，与第一电池单体10对应的两个热管理部件30分别设置在该第一电池单体10的两个第一表面11a。在又一些示例中，部分的第一电池单体10仅在一个第一表面11a上设置热管理部件30，部分的第一电池单体10在两个第一表面11a上均设置热管理部件30。The number of thermal management components 30 and the number of first battery cells 10 may be the same or different. In some examples, the number of thermal management components 30 is the same as the number of first battery cells 10 , and the thermal management components 30 and the first battery cells 10 are arranged in one-to-one correspondence. In other examples, each first battery unit 10 corresponds to two thermal management components 30 , and the two thermal management components 30 corresponding to the first battery unit 10 are respectively disposed on two sides of the first battery unit 10 . First surface 11a. In some examples, some of the first battery cells 10 are provided with the thermal management component 30 on only one first surface 11a, and some of the first battery cells 10 are provided with the thermal management component 30 on both first surfaces 11a. .
在一些实施例中，电池2还包括汇流管路50，用于将多个热管理部件30连通。In some embodiments, the battery 2 further includes a manifold 50 for connecting multiple thermal management components 30 .
汇流管路50将多个热管理部件30串联、并联或混联，混联是指多个热管理部件30之间既有串联，也有并联。The manifold 50 connects multiple thermal management components 30 in series, parallel or mixed connection. Mixed connection means that the multiple thermal management components 30 are connected in series or in parallel.
汇流管路50将多个热管理部件30连通，以便于换热介质在多个热管理部件30中流动。The manifold 50 connects the plurality of thermal management components 30 to facilitate the flow of heat exchange medium in the plurality of thermal management components 30 .
在一些实施例中，汇流管路50包括进流管51和出流管52，各热管理部件30 连通于进流管51和出流管52，以使多个热管理部件30并联设置。In some embodiments, the manifold 50 includes an inlet pipe 51 and an outlet pipe 52 , and each thermal management component 30 is connected to the inlet pipe 51 and the outlet pipe 52 , so that multiple thermal management components 30 are arranged in parallel.
换热介质可经由进流管51流入多个热管理部件30，并在流过多个热管理部件30后从出流管52流出。The heat exchange medium can flow into the plurality of thermal management components 30 via the inflow pipe 51 and flow out from the outflow pipe 52 after flowing through the plurality of thermal management components 30 .
进流管51和出流管52将多个热管理部件30并联，这样可以减小多个热管理部件30中的换热介质的温度差，改善多个第一电池单体10的温度一致性。The inflow pipe 51 and the outflow pipe 52 connect multiple thermal management components 30 in parallel, which can reduce the temperature difference of the heat exchange medium in the multiple thermal management components 30 and improve the temperature consistency of the multiple first battery cells 10 .
在一些实施例中，电池2还包括框架结构60，框架结构60具有容纳腔，电池单元20和第一电池单体10容纳于容纳腔并安装于框架结构60。进流管51和出流管52连接于框架结构60。In some embodiments, the battery 2 further includes a frame structure 60 having a receiving cavity, and the battery unit 20 and the first battery cell 10 are received in the receiving cavity and installed on the frame structure 60 . The inlet pipe 51 and the outlet pipe 52 are connected to the frame structure 60 .
框架结构60可以支撑和固定第一电池单体10和第二电池单体40，以降低第一电池单体10和第二电池单体40错位、晃动的风险。在电池2受到外部冲击时，框架结构60可以固定进流管51和出流管52，以减小进流管51和出流管52晃动的幅度，降低换热介质因进流管51和出流管52破损而泄露的风险，提高安全性。The frame structure 60 can support and fix the first battery cell 10 and the second battery cell 40 to reduce the risk of dislocation and shaking of the first battery cell 10 and the second battery cell 40 . When the battery 2 is subjected to external impact, the frame structure 60 can fix the inlet pipe 51 and the outlet pipe 52 to reduce the shaking amplitude of the inlet pipe 51 and the outlet pipe 52 and reduce the heat exchange medium caused by the inlet pipe 51 and the outlet pipe 51 . The risk of leakage caused by damage to the flow tube 52 is eliminated, thereby improving safety.
在一些实施例中，电池单元20和第一电池单体10构成电池组70。框架结构60包括两个端板61和多个侧板，两个端板61分别位于电池组70沿第一方向X的两端，各侧板连接两个端板61。进流管51和出流管52连接于侧板。In some embodiments, battery unit 20 and first battery cell 10 constitute battery pack 70 . The frame structure 60 includes two end plates 61 and a plurality of side plates. The two end plates 61 are respectively located at two ends of the battery pack 70 along the first direction X. Each side plate connects the two end plates 61 . The inflow pipe 51 and the outflow pipe 52 are connected to the side plates.
两个端板61可以从电池组70沿第一方向X的两端夹持电池组70，以限制第一电池单体10和第二电池单体40沿第一方向X的移动。The two end plates 61 may clamp the battery pack 70 from both ends of the battery pack 70 along the first direction X to limit the movement of the first battery cell 10 and the second battery cell 40 along the first direction X.
进流管51和出流管52可以连接于同一个侧板，也可以分别连接于两个不同的侧板。The inflow pipe 51 and the outflow pipe 52 can be connected to the same side plate, or can be connected to two different side plates respectively.
在一些实施例中，进流管51和出流管52分别连接于两个不同的侧板。本实施例可以简化单个侧板的结构。In some embodiments, the inlet pipe 51 and the outlet pipe 52 are respectively connected to two different side plates. This embodiment can simplify the structure of a single side plate.
在一些实施例中，多个侧板包括两个第一侧板62和第二侧板63，两个第一侧板62分别位于电池组70的两侧，且两个第一侧板62的布置方向垂直于第一方向X；第二侧板63连接两个第一侧板62和两个端板61。In some embodiments, the plurality of side plates include two first side plates 62 and a second side plate 63. The two first side plates 62 are respectively located on both sides of the battery pack 70, and the two first side plates 62 are The arrangement direction is perpendicular to the first direction X; the second side plate 63 connects the two first side plates 62 and the two end plates 61 .
两个第二侧板63可以从两侧对第一电池单体10和第二电池单体40进行限位。可选地，第二侧板63可以设置在电池组70的下侧，以支撑第一电池单体10和第二电池单体40。The two second side plates 63 can limit the first battery cell 10 and the second battery cell 40 from both sides. Optionally, the second side plate 63 may be provided on the lower side of the battery pack 70 to support the first battery cell 10 and the second battery cell 40 .
在一些实施例中，进流管51和出流管52分别连接于两个第一侧板62。In some embodiments, the inlet pipe 51 and the outlet pipe 52 are connected to the two first side plates 62 respectively.
在另一些实施例中，进流管51和出流管52中的一者连接于第一侧板62，另一者连接于第二侧板63。In other embodiments, one of the inlet pipe 51 and the outflow pipe 52 is connected to the first side plate 62 , and the other is connected to the second side plate 63 .
在一些实施例中，电池2还包括设置于端板61的进流接头81和出流接头82，进流接头81用于与进流管51连通，出流接头82用于与出流管52连通。In some embodiments, the battery 2 further includes an inflow connector 81 and an outflow connector 82 provided on the end plate 61 , the inflow connector 81 is used to communicate with the inflow pipe 51 , and the outflow connector 82 is used to communicate with the outflow pipe 52 Connected.
进流接头81和出流接头82可用于与电池2外部的用于提供换热介质的供给装置连通，以使换热介质能够在多个热管理部件30和供给装置之间循环流动。The inflow joint 81 and the outflow joint 82 can be used to communicate with a supply device for providing heat exchange medium outside the battery 2 so that the heat exchange medium can circulate between the plurality of thermal management components 30 and the supply device.
在一些实施例中，供给装置包括储液箱、泵和连接管路，储液箱用于存储换热介质，连接管路用于将储液箱与进流接头81和出流接头82连通，泵设置于连接管路，并用于驱动换热介质在热管理部件30和储液箱之间循环流动。In some embodiments, the supply device includes a liquid storage tank, a pump and connecting pipelines, the liquid storage tank is used to store the heat exchange medium, and the connecting pipeline is used to connect the liquid storage tank with the inflow connector 81 and the outflow connector 82, The pump is provided in the connecting pipeline and is used to drive the heat exchange medium to circulate between the thermal management component 30 and the liquid storage tank.
在一些实施例中，进流接头81和出流接头82设置于同一个端板61。In some embodiments, the inflow connector 81 and the outflow connector 82 are disposed on the same end plate 61 .
将进流接头81和出流接头82设置在同一个端板61，可便于用于提供换热介质的供给装置与进流接头81和出流接头82连通，有助于简化供给装置的连接管路。Arranging the inflow joint 81 and the outflow joint 82 on the same end plate 61 can facilitate the connection between the supply device for providing heat exchange medium and the inflow joint 81 and the outflow joint 82, and help simplify the connecting pipe of the supply device. road.
图16为图15所示的电池2的一部分的立体结构示意图；图17为图16所示的热管理部件30的结构示意图。FIG. 16 is a schematic three-dimensional structural diagram of a part of the battery 2 shown in FIG. 15 ; FIG. 17 is a schematic structural diagram of the thermal management component 30 shown in FIG. 16 .
如图15至图17所示，在一些实施例中，电池2包括多个电池列90，各电池列90包括沿第一方向X堆叠的第一电池单体10和电池单元20。多个电池列90的排列方向垂直于第一方向X，且平行于或垂直于第二方向Y；第一方向X垂直于第二方向Y。As shown in FIGS. 15 to 17 , in some embodiments, the battery 2 includes a plurality of battery columns 90 , and each battery column 90 includes a first battery cell 10 and a battery unit 20 stacked along the first direction X. The arrangement direction of the plurality of battery rows 90 is perpendicular to the first direction X and parallel or perpendicular to the second direction Y; the first direction X is perpendicular to the second direction Y.
将多个第一电池单体10和多个电池单元20排布为多列，可以提高电池2的能量密度，简化电池2的结构。Arranging the plurality of first battery cells 10 and the plurality of battery units 20 in multiple columns can increase the energy density of the battery 2 and simplify the structure of the battery 2 .
在一些实施例中，多个电池列90的第一电池单体10和电池单元20的总数量相同。可选地，多个电池列90的第一电池单体10的数量相同，多个电池列90的电池单元20的数量相同。In some embodiments, the total number of first battery cells 10 and battery units 20 of the plurality of battery rows 90 is the same. Optionally, the number of first battery cells 10 in the plurality of battery columns 90 is the same, and the number of battery units 20 in the plurality of battery columns 90 is the same.
在一些实施例中，多个电池列90的第一电池单体10沿排列方向相对，多个电池列90的电池单元20沿排列方向相对。In some embodiments, the first battery cells 10 of the multiple battery rows 90 are opposite along the arrangement direction, and the battery units 20 of the multiple battery rows 90 are opposite along the arrangement direction.
各电池列90的电池单元20的空隙G均可用于容纳热管理部件30。多个电池列90的电池单元20沿排列方向相对，便于热管理部件30的设于多个电池列90的多个部分相连。The gaps G of the battery cells 20 of each battery row 90 can be used to accommodate the thermal management component 30 . The battery cells 20 of the plurality of battery rows 90 face each other along the arrangement direction, which facilitates the connection of multiple parts of the thermal management component 30 provided in the plurality of battery rows 90 .
在一些实施例中，多个电池列90的排列方向平行于第二方向Y。热管理部件30包括多个沿第二方向Y布置的第一换热管31，各第一换热管31的至少部分容纳于电池单元20的空隙G。热管理部件30的多个第一换热管31用于与多个电池列90的第一电池单体10换热。In some embodiments, the arrangement direction of the plurality of battery columns 90 is parallel to the second direction Y. The thermal management component 30 includes a plurality of first heat exchange tubes 31 arranged along the second direction Y, and at least part of each first heat exchange tube 31 is accommodated in the gap G of the battery unit 20 . The plurality of first heat exchange tubes 31 of the thermal management component 30 are used to exchange heat with the first battery cells 10 of the plurality of battery rows 90 .
各电池列90的第一电池单体10与热管理部件30的至少一个第一换热管31对应设置。The first battery cells 10 of each battery row 90 are arranged corresponding to at least one first heat exchange tube 31 of the thermal management component 30 .
热管理部件30的多个第一换热管31可以同时与多个电池列90的第一电池单体10进行换热，可简化热管理部件30的结构。The plurality of first heat exchange tubes 31 of the thermal management component 30 can simultaneously exchange heat with the first battery cells 10 of the multiple battery rows 90 , which can simplify the structure of the thermal management component 30 .
可选地，每个第一电池单体10对应设置有多个第一换热管31。Optionally, each first battery cell 10 is provided with a plurality of first heat exchange tubes 31 .
在一些实施例中，热管理部件30包括多个第二换热管32，用于将多个第一换热管31连通。多个第一换热管31和多个第二换热管32交替连接。In some embodiments, the thermal management component 30 includes a plurality of second heat exchange tubes 32 for communicating the plurality of first heat exchange tubes 31 . The plurality of first heat exchange tubes 31 and the plurality of second heat exchange tubes 32 are alternately connected.
图18为本申请另一些实施例提供的电池2的***示意图，其中部分的第一电池单体10和第二电池单体40省略；图19为本申请另一些实施例提供的电池2的结构示意图；图20为图18的第一电池单体10和热管理部件30的结构示意图。Figure 18 is an exploded schematic diagram of the battery 2 provided by other embodiments of the present application, in which part of the first battery cell 10 and the second battery cell 40 is omitted; Figure 19 is the structure of the battery 2 provided by other embodiments of the present application. Schematic diagram; Figure 20 is a schematic structural diagram of the first battery cell 10 and the thermal management component 30 of Figure 18.
如图18至图20所示，在一些实施例中，电池列90的排列方向垂直于第二方向Y。示例性地，电池列90的排列方向平行于第三方向Z。As shown in FIGS. 18 to 20 , in some embodiments, the arrangement direction of the battery rows 90 is perpendicular to the second direction Y. For example, the arrangement direction of the battery rows 90 is parallel to the third direction Z.
在一些实施例中，热管理部件30包括多个沿第二方向Y布置的第一换热管31，各第一换热管31的至少部分容纳于电池单元20的空隙G。各第一换热管31用于与多个电池列90的第一电池单体10换热。In some embodiments, the thermal management component 30 includes a plurality of first heat exchange tubes 31 arranged along the second direction Y, and at least part of each first heat exchange tube 31 is accommodated in the gap G of the battery unit 20 . Each first heat exchange tube 31 is used to exchange heat with the first battery cells 10 of the plurality of battery rows 90 .
第一换热管31容纳于多个电池列90的电池单元20的空隙G。The first heat exchange tubes 31 are accommodated in the gaps G of the battery cells 20 of the plurality of battery rows 90 .
热管理部件30的各第一换热管31可以同时与多个电池列90的第一电池单体 10进行换热，可简化热管理部件30的结构。Each first heat exchange tube 31 of the thermal management component 30 can simultaneously exchange heat with the first battery cells 10 of the plurality of battery rows 90, which can simplify the structure of the thermal management component 30.
可选地，第一换热管31沿电池列90的排列方向延伸。Optionally, the first heat exchange tube 31 extends along the arrangement direction of the battery rows 90 .
在一些实施例中，热管理部件30包括多个第二换热管32，用于将多个第一换热管31连通。多个第一换热管31和多个第二换热管32交替连接。In some embodiments, the thermal management component 30 includes a plurality of second heat exchange tubes 32 for communicating the plurality of first heat exchange tubes 31 . The plurality of first heat exchange tubes 31 and the plurality of second heat exchange tubes 32 are connected alternately.
根据本申请的一些实施例，本申请还提供了一种用电装置，包括以上任一实施例的电池2，电池2用于为用电装置提供电能。用电装置可以是前述任一应用电池2的设备或***。According to some embodiments of the present application, the present application also provides an electrical device, including the battery 2 of any of the above embodiments. The battery 2 is used to provide electrical energy to the electrical device. The power-consuming device may be any of the aforementioned devices or systems using the battery 2 .
根据本申请的一些实施例，参照图13至图17，本申请实施例提供了一种电池2，其包括两个电池列90和多个热管理部件30。各电池列90包括多个第一电池单体10和多个电池单元20，多个第一电池单体10和多个电池单元20沿第一方向X交替堆叠。各电池单元20包括沿第二方向Y布置的多个第二电池单体40，第二方向Y与第一方向X垂直。两个电池列90沿第二方向Y排列。According to some embodiments of the present application, with reference to FIGS. 13 to 17 , embodiments of the present application provide a battery 2 that includes two battery rows 90 and a plurality of thermal management components 30 . Each battery column 90 includes a plurality of first battery cells 10 and a plurality of battery cells 20 , and the plurality of first battery cells 10 and the plurality of battery cells 20 are alternately stacked along the first direction X. Each battery unit 20 includes a plurality of second battery cells 40 arranged along the second direction Y, which is perpendicular to the first direction X. The two battery rows 90 are arranged along the second direction Y.
第一电池单体10为方形电池单体，第二电池单体40为圆柱电池单体。在第二方向Y上，电池单元20的任意两个第二电池单体40之间设有空隙G。The first battery cell 10 is a square battery cell, and the second battery cell 40 is a cylindrical battery cell. In the second direction Y, a gap G is provided between any two second battery cells 40 of the battery unit 20 .
多个热管理部件30沿第一方向X布置。各热管理部件30包括多个第一换热管31和多个第二换热管32，多个第一换热管31沿第二方向Y布置，多个第一换热管31和多个第二换热管32交替连接。The plurality of thermal management components 30 are arranged along the first direction X. Each thermal management component 30 includes a plurality of first heat exchange tubes 31 and a plurality of second heat exchange tubes 32. The plurality of first heat exchange tubes 31 are arranged along the second direction Y. The plurality of first heat exchange tubes 31 and a plurality of second heat exchange tubes 32 are arranged along the second direction Y. The second heat exchange tubes 32 are connected alternately.
热管理部件30的多个第一换热管31的一部分容纳于一个电池列90的电池单元20的空隙G，并用于与该一个电池列90的第一电池单体10换热。管理部件的多个第一换热管31的另一部分容纳于另一个电池列90的电池单元20的空隙G，并用于与该另一个电池列90的第一电池单体10换热。A portion of the plurality of first heat exchange tubes 31 of the thermal management component 30 is accommodated in the gap G of the battery unit 20 of one battery row 90 and is used to exchange heat with the first battery unit 10 of the one battery row 90 . Another part of the plurality of first heat exchange tubes 31 of the management component is accommodated in the gap G of the battery unit 20 of another battery row 90 and is used to exchange heat with the first battery unit 10 of the other battery row 90 .
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other.
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，但这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modifications may be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions may be made to some of the technical features, but these modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims (39)

  1. 一种电池，包括：A battery including:
    第一电池单体；The first battery cell;
    电池单元，与所述第一电池单体沿第一方向堆叠，所述电池单元包括沿第二方向布置的多个第二电池单体，所述第二方向与所述第一方向相交，在所述第二方向上，所述电池单元的至少两个所述第二电池单体之间设有空隙；以及A battery unit stacked with the first battery unit along a first direction, the battery unit including a plurality of second battery units arranged along a second direction, the second direction intersecting the first direction, in In the second direction, a gap is provided between at least two second battery cells of the battery unit; and
    热管理部件，所述热管理部件的至少部分容纳于所述空隙并用于与所述第一电池单体换热。A thermal management component, at least part of which is accommodated in the gap and used to exchange heat with the first battery cell.
  2. 根据权利要求1所述的电池，其中，所述第一电池单体和所述第二电池单体具有不同的形状。The battery of claim 1, wherein the first battery cell and the second battery cell have different shapes.
  3. 根据权利要求2所述的电池，其中，所述第一电池单体为方形电池单体，所述第二电池单体为圆柱电池单体。The battery according to claim 2, wherein the first battery cell is a square battery cell, and the second battery cell is a cylindrical battery cell.
  4. 根据权利要求1-3任一项所述的电池，其中，所述第一方向垂直于所述第二方向。The battery according to any one of claims 1-3, wherein the first direction is perpendicular to the second direction.
  5. 根据权利要求1-4任一项所述的电池，其中，所述第二电池单体沿第三方向的尺寸大于所述第二电池单体沿所述第一方向的尺寸，所述第二电池单体沿所述第三方向的尺寸大于所述第二电池单体沿所述第二方向的尺寸，所述第一方向、所述第二方向以及所述第三方向两两垂直。The battery according to any one of claims 1 to 4, wherein the size of the second battery cell along the third direction is larger than the size of the second battery cell along the first direction, and the second The size of the battery cell along the third direction is larger than the size of the second battery cell along the second direction, and the first direction, the second direction and the third direction are two perpendicular to each other.
  6. 根据权利要求5所述的电池，其中，所述第一电池单体包括第一外壳，所述第二电池单体包括第二外壳，所述第一外壳沿所述第三方向的尺寸等于所述第二外壳沿所述第三方向的尺寸。The battery of claim 5, wherein the first battery cell includes a first casing, the second battery cell includes a second casing, and a size of the first casing along the third direction is equal to the The size of the second housing along the third direction.
  7. 根据权利要求1-6任一项所述的电池，其中，所述第一电池单体具有沿所述第一方向相对设置的两个第一表面，所述电池单元的多个所述第二电池单体与所述第一表面相连接；The battery according to any one of claims 1 to 6, wherein the first battery cell has two first surfaces oppositely arranged along the first direction, and a plurality of the second second surfaces of the battery unit The battery cells are connected to the first surface;
    所述热管理部件连接于所述第一表面。The thermal management component is attached to the first surface.
  8. 根据权利要求7所述的电池，其中，所述第一表面为平面；The battery of claim 7, wherein the first surface is planar;
    所述第二电池单体的外表面的至少部分为弧形面，所述弧形面用于与所述第一表面连接；At least part of the outer surface of the second battery cell is an arc-shaped surface, and the arc-shaped surface is used to connect with the first surface;
    在所述第二方向上，两个相邻的所述第二电池单体的所述弧形面之间形成所述空隙。In the second direction, the gap is formed between the arcuate surfaces of two adjacent second battery cells.
  9. 根据权利要求7或8所述的电池，其中，所述热管理部件粘接于所述第一表面。The battery of claim 7 or 8, wherein the thermal management component is bonded to the first surface.
  10. 根据权利要求1-9任一项所述的电池，其中，所述热管理部件的容纳于所述空隙的部分还可用于与所述第二电池单体换热。The battery according to any one of claims 1 to 9, wherein the portion of the thermal management component accommodated in the gap can also be used to exchange heat with the second battery cell.
  11. 根据权利要求10所述的电池，其中，所述热管理部件通过导热胶连接于所述第二电池单体。The battery of claim 10, wherein the thermal management component is connected to the second battery cell through thermally conductive glue.
  12. 根据权利要求1-11任一项所述的电池，其中，在所述电池单元中，任意相邻的 两个所述第二电池单体彼此连接。The battery according to any one of claims 1 to 11, wherein in the battery unit, any two adjacent second battery cells are connected to each other.
  13. 根据权利要求1-12任一项所述的电池，其中，所述电池单元的所述第二电池单体的数量至少为三个；The battery according to any one of claims 1 to 12, wherein the number of the second battery cells of the battery unit is at least three;
    在所述电池单元中，任意两个相邻的所述第二电池单体之间设有所述空隙。In the battery unit, the gap is provided between any two adjacent second battery cells.
  14. 根据权利要求13所述的电池，其中，所述热管理部件包括多个沿所述第二方向布置的第一换热管；The battery of claim 13, wherein the thermal management component includes a plurality of first heat exchange tubes arranged along the second direction;
    各所述空隙内设有所述第一换热管。The first heat exchange tube is disposed in each of the gaps.
  15. 根据权利要求14所述的电池，其中，各所述空隙内设有所述热管理部件的一个所述第一换热管。The battery according to claim 14, wherein one of the first heat exchange tubes of the thermal management component is disposed in each of the gaps.
  16. 根据权利要求14或15所述的电池，其中，所述热管理部件包括多个第二换热管，用于将多个所述第一换热管连通。The battery according to claim 14 or 15, wherein the thermal management component includes a plurality of second heat exchange tubes for communicating a plurality of the first heat exchange tubes.
  17. 根据权利要求16所述的电池，其中，所述第二换热管设置为两个，两个所述第二换热管间隔设置；The battery according to claim 16, wherein there are two second heat exchange tubes, and the two second heat exchange tubes are arranged at intervals;
    多个所述第一换热管位于两个所述第二换热管之间，且各第一换热管的两端分别连通于两个所述第二换热管。A plurality of the first heat exchange tubes are located between the two second heat exchange tubes, and both ends of each first heat exchange tube are respectively connected to the two second heat exchange tubes.
  18. 根据权利要求16所述的电池，其中，多个所述第一换热管和多个所述第二换热管交替连接。The battery according to claim 16, wherein a plurality of the first heat exchange tubes and a plurality of the second heat exchange tubes are alternately connected.
  19. 根据权利要求14-18所述的电池，其中，所述第一换热管沿第三方向延伸，所述第一方向、所述第二方向以及所述第三方向两两垂直。The battery according to claims 14-18, wherein the first heat exchange tube extends along a third direction, and the first direction, the second direction and the third direction are vertical in pairs.
  20. 根据权利要求14-19所述的电池，其中，所述第一换热管的截面为三角形、梯形、矩形或半圆形。The battery according to claims 14-19, wherein the cross-section of the first heat exchange tube is triangular, trapezoidal, rectangular or semicircular.
  21. 根据权利要求14-19所述的电池，其中，所述第一电池单体和两个相邻的所述第二电池单体围绕所述空隙，所述第一换热管的截面的形状与所述空隙的截面的形状相匹配。The battery according to claims 14-19, wherein the first battery cell and two adjacent second battery cells surround the gap, and the cross-section shape of the first heat exchange tube is consistent with The shapes of the cross-sections of the voids match.
  22. 根据权利要求1-21任一项所述的电池，其中，所述热管理部件的材质包括铜、铝合金和不锈钢中的至少一种。The battery according to any one of claims 1 to 21, wherein the thermal management component is made of at least one of copper, aluminum alloy and stainless steel.
  23. 根据权利要求1-22任一项所述的电池，其中，所述第一电池单体设置为多个，所述电池单元设置为多个；The battery according to any one of claims 1 to 22, wherein the first battery cells are provided in plurality, and the battery units are provided in plurality;
    多个所述第一电池单体和多个所述电池单元沿所述第一方向堆叠；A plurality of the first battery cells and a plurality of the battery cells are stacked along the first direction;
    所述热管理部件至少用于和与所述电池单元相邻的所述第一电池单体进行换热。The thermal management component is at least used to exchange heat with the first battery cell adjacent to the battery unit.
  24. 根据权利要求23所述的电池，其中，多个所述第一电池单体和多个所述电池单元沿所述第一方向交替设置。The battery according to claim 23, wherein a plurality of the first battery cells and a plurality of the battery cells are alternately arranged along the first direction.
  25. 根据权利要求24所述的电池，其中，任意相邻的两个所述第一电池单体之间设有所述热管理部件。The battery according to claim 24, wherein the thermal management component is provided between any two adjacent first battery cells.
  26. 根据权利要求23-25任一项所述的电池，其中，所述热管理部件为多个，多个所述热管理部件沿所述第一方向布置。The battery according to any one of claims 23 to 25, wherein there are a plurality of thermal management components, and a plurality of the thermal management components are arranged along the first direction.
  27. 根据权利要求26所述的电池，还包括汇流管路，用于将多个所述热管理部件连通。The battery of claim 26, further comprising a manifold for communicating a plurality of the thermal management components.
  28. 根据权利要求27所述的电池，其中，所述汇流管路包括进流管和出流管，各所述热管理部件连通于所述进流管和所述出流管，以使多个所述热管理部件并联设置。The battery according to claim 27, wherein the manifold pipeline includes an inlet pipe and an outlet pipe, and each of the thermal management components is connected to the inlet pipe and the outlet pipe, so that a plurality of the The thermal management components described above are arranged in parallel.
  29. 根据权利要求28所述的电池，还包括框架结构，所述框架结构具有容纳腔，所述电池单元和所述第一电池单体容纳于所述容纳腔并安装于所述框架结构；The battery according to claim 28, further comprising a frame structure having a receiving cavity, the battery unit and the first battery cell being received in the receiving cavity and installed on the frame structure;
    所述进流管和所述出流管连接于所述框架结构。The inlet pipe and the outlet pipe are connected to the frame structure.
  30. 根据权利要求29所述的电池，其中，所述电池单元和所述第一电池单体构成电池组；The battery of claim 29, wherein the battery unit and the first battery cell constitute a battery pack;
    所述框架结构包括两个端板和多个侧板，两个端板分别位于所述电池组沿所述第一方向的两端，各侧板连接两个所述端板；The frame structure includes two end plates and a plurality of side plates, the two end plates are respectively located at both ends of the battery pack along the first direction, and each side plate connects two of the end plates;
    所述进流管和所述出流管连接于所述侧板。The inlet pipe and the outlet pipe are connected to the side plate.
  31. 根据权利要求30所述的电池，其中，所述进流管和所述出流管分别连接于两个不同的所述侧板。The battery according to claim 30, wherein the inlet pipe and the outlet pipe are respectively connected to two different side plates.
  32. 根据权利要求31所述的电池，其中，The battery according to claim 31, wherein
    所述多个侧板包括两个第一侧板和第二侧板，两个所述第一侧板分别位于所述电池组的两侧，且两个所述第一侧板的布置方向垂直于所述第一方向；所述第二侧板连接两个所述第一侧板和两个所述端板；The plurality of side plates include two first side plates and a second side plate. The two first side plates are respectively located on both sides of the battery pack, and the arrangement direction of the two first side plates is vertical. In the first direction; the second side plate connects two of the first side plates and two of the end plates;
    所述进流管和所述出流管分别连接于两个所述第一侧板；或者，所述进流管和所述出流管中的一者连接于所述第一侧板，另一者连接于所述第二侧板。The inlet pipe and the outflow pipe are respectively connected to the two first side plates; or, one of the inlet pipe and the outflow pipe is connected to the first side plate, and the other is connected to the first side plate. One is connected to the second side plate.
  33. 根据权利要求30-32任一项所述的电池，还包括设置于所述端板的进流接头和出流接头，所述进流接头用于与所述进流管连通，所述出流接头用于与所述出流管连通。The battery according to any one of claims 30 to 32, further comprising an inflow joint and an outflow joint provided on the end plate, the inflow joint being used to communicate with the inflow pipe, and the outflow joint The joint is used to communicate with the outflow pipe.
  34. 根据权利要求33所述的电池，其中，所述进流接头和所述出流接头设置于同一个所述端板。The battery according to claim 33, wherein the inlet connector and the outlet connector are disposed on the same end plate.
  35. 根据权利要求1-34任一项所述的电池，包括多个电池列，各电池列包括沿所述第一方向堆叠的所述第一电池单体和所述电池单元；The battery according to any one of claims 1 to 34, comprising a plurality of battery columns, each battery column including the first battery cell and the battery unit stacked along the first direction;
    所述多个电池列的排列方向垂直于所述第一方向，且平行于或垂直于所述第二方向；所述第一方向垂直于所述第二方向。The arrangement direction of the plurality of battery columns is perpendicular to the first direction and parallel or perpendicular to the second direction; the first direction is perpendicular to the second direction.
  36. 根据权利要求35所述的电池，其中，所述多个电池列的所述第一电池单体沿所述排列方向相对，所述多个电池列的所述电池单元沿所述排列方向相对。The battery according to claim 35, wherein the first battery cells of the plurality of battery columns are opposite to each other along the arrangement direction, and the battery cells of the plurality of battery columns are opposite to each other along the arrangement direction.
  37. 根据权利要求36所述的电池，其中，所述多个电池列的排列方向平行于所述第二方向；The battery according to claim 36, wherein the arrangement direction of the plurality of battery columns is parallel to the second direction;
    所述热管理部件包括多个沿所述第二方向布置的第一换热管，各所述第一换热管的至少部分容纳于所述电池单元的所述空隙；The thermal management component includes a plurality of first heat exchange tubes arranged along the second direction, and at least part of each first heat exchange tube is accommodated in the gap of the battery unit;
    所述热管理部件的多个所述第一换热管用于与所述多个电池列的所述第一电池单体换热。The plurality of first heat exchange tubes of the thermal management component are used to exchange heat with the first battery cells of the plurality of battery columns.
  38. 根据权利要求36所述的电池，其中，所述多个电池列的排列方向垂直于所述第二方向；The battery according to claim 36, wherein the arrangement direction of the plurality of battery columns is perpendicular to the second direction;
    所述热管理部件包括多个沿所述第二方向布置的第一换热管，各所述第一换热管 的至少部分容纳于所述电池单元的所述空隙；The thermal management component includes a plurality of first heat exchange tubes arranged along the second direction, and at least part of each first heat exchange tube is accommodated in the gap of the battery unit;
    各所述第一换热管用于与所述多个电池列的所述第一电池单体换热。Each of the first heat exchange tubes is used to exchange heat with the first battery cells of the plurality of battery rows.
  39. 一种用电装置，包括根据权利要求1-38任一项所述的电池，所述电池用于提供电能。An electrical device, including the battery according to any one of claims 1 to 38, the battery being used to provide electrical energy.
PCT/CN2022/098729 2022-06-14 2022-06-14 Battery and electric device WO2023240462A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102171884A (en) * 2008-10-14 2011-08-31 株式会社Lg化学 Battery module assembly with improved cooling efficiency
JP2013196810A (en) * 2012-03-16 2013-09-30 Panasonic Corp Battery module
CN108206256A (en) * 2018-02-07 2018-06-26 华南理工大学 A kind of light-weighted electric vehicle lithium-ion-power cell heat management liquid cooling system
CN216389517U (en) * 2021-11-05 2022-04-26 宁德时代新能源科技股份有限公司 Battery pack, battery thermal management system, and power consumption device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102171884A (en) * 2008-10-14 2011-08-31 株式会社Lg化学 Battery module assembly with improved cooling efficiency
JP2013196810A (en) * 2012-03-16 2013-09-30 Panasonic Corp Battery module
CN108206256A (en) * 2018-02-07 2018-06-26 华南理工大学 A kind of light-weighted electric vehicle lithium-ion-power cell heat management liquid cooling system
CN216389517U (en) * 2021-11-05 2022-04-26 宁德时代新能源科技股份有限公司 Battery pack, battery thermal management system, and power consumption device

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