WO2023142064A1 - 电池单体、电池、用电设备、电池单体的制造方法及设备 - Google Patents

电池单体、电池、用电设备、电池单体的制造方法及设备 Download PDF

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Publication number
WO2023142064A1
WO2023142064A1 PCT/CN2022/075063 CN2022075063W WO2023142064A1 WO 2023142064 A1 WO2023142064 A1 WO 2023142064A1 CN 2022075063 W CN2022075063 W CN 2022075063W WO 2023142064 A1 WO2023142064 A1 WO 2023142064A1
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WO
WIPO (PCT)
Prior art keywords
battery cell
main body
insulator
connecting portion
end cover
Prior art date
Application number
PCT/CN2022/075063
Other languages
English (en)
French (fr)
Inventor
吴宁生
邢承友
黄思应
白璐璐
王鹏
李全坤
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.)
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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 PCT/CN2022/075063 priority Critical patent/WO2023142064A1/zh
Publication of WO2023142064A1 publication Critical patent/WO2023142064A1/zh

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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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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 battery technology, in particular to a battery cell, a battery, an electrical device, and a method and device for manufacturing the battery cell.
  • the purpose of the present application is to provide a battery cell, a battery, an electrical device, and a method and device for manufacturing the battery cell.
  • the battery cell has high safety.
  • the present application provides a battery cell, including: a housing with an opening; an end cover assembly, including an end cover and an electrode terminal, the end cover is used to cover the opening, and the electrode terminal is disposed on The end cap; an electrode assembly, arranged in the housing, the electrode assembly includes a main body coated with an active material layer and a tab not coated with an active material layer, and the tab starts from the end of the main body along the first direction
  • the end cap assembly is located on one side of the main body along the second direction, the first direction is perpendicular to the second direction;
  • the adapter includes a first connection for connecting the electrode terminal part and a second connection part for connecting the tab; a first insulator is arranged between the first connection part and the main body, and is used for insulating and isolating the first connection part and the main body.
  • the first insulator is arranged between the first connection part and the main body, which is equivalent to adding a layer of insulation isolation protection between the first connection part and the main body, even if the battery cell is subjected to vibration, Or, the electrode assembly expands during use, causing the main body to move toward the first connection part. Since the first insulator is located between the first connection part and the main body, the solder print connecting the first connection part with the electrode terminal is covered by the first insulator. Blocking reduces the risk of soldering piercing the insulating structure of the outer layer of the main body (such as the isolation film), reduces the probability of shorting the first connection part and the main body, and improves the safety of the battery cell.
  • the battery cell further includes: a second insulator, disposed between the end cover and the first connection part, for insulating and isolating the first connection part from the first connection part.
  • the end cap; the first insulator includes a first body and a first clamping part provided on the first body, and the first clamping part is clamped to the first connection part or the second insulator pieces.
  • the first insulator is clamped to the first connection part or the second insulator, so as to facilitate the assembly and fixation of the first insulator, and has a compact structure.
  • the first engaging portion is disposed on an edge of the first body.
  • the first clamping part is located at the edge of the first body, which is convenient for processing and easy to realize assembly with the first connecting part or the second insulating part.
  • the first body includes a bottom wall and a first side wall
  • the bottom wall is disposed between the first connection part and the main body
  • the first side wall The edge of the bottom wall extends toward the direction close to the end cover, the first side wall and the bottom wall enclose a space for accommodating the first connecting part, and the first engaging part is arranged on the first side wall.
  • the first side wall surrounds the first connection part, which increases the insulation protection range of the first insulator to the first connection part, and improves the insulation protection effect.
  • the number of the first engaging portions is multiple, and the plurality of first engaging portions are distributed at intervals along the edge of the first body.
  • a plurality of first clamping parts are distributed at intervals along the edge of the first body, so that the first insulating part and the first connecting part have multiple connection positions, so as to ensure that the connection between the first insulating part and the first connecting part is firm sex.
  • the first clamping portion is clamped to the first connecting portion; the first connecting portion has a first surface facing the end cover, and the first clamping portion is clamped connected to the edge of the first surface; or, the first connecting portion has a first surface facing the end cap, a second surface facing away from the end cap, and connecting the first surface and the second On the outer peripheral surface of the surface, a step is provided on the outer peripheral surface, and the first locking part is clipped to the step.
  • the assembly in the embodiment where the first engaging part is engaged with the edge of the first surface, the assembly is simple and easy to operate; in the embodiment where the first engaging part is engaged with the step, the setting of the step reduces The space occupation after the assembly of the first clamping part and the first connecting part is reduced, and the assembly is convenient.
  • the second insulator is provided with a first notch for avoiding the first engaging portion.
  • the setting of the first notch prevents the first clamping part from interfering with the second insulator when assembling the first connecting part, reduces the difficulty of assembling, and improves the assembling efficiency.
  • the first clamping part is clamped to the second insulator, and the second insulator is provided with a clamping groove for matching with the first clamping part, and the first clamping part A clamping portion is clamped to the clamping slot.
  • the provision of the locking slot facilitates the assembly of the first insulator and the second insulator, and ensures the stability of the assembly of the first insulator and the second insulator.
  • the second insulating member includes a top wall and a second side wall, the top wall is disposed between the first connecting portion and the end cover, and the second side wall The edge of the top wall extends in a direction away from the end cover, the second side wall and the top wall enclose a space for accommodating the first connecting part, and the card slot is arranged on the top The junction of the wall and the second side wall.
  • the second side wall surrounds the first connection part, which can increase the insulating effect on the first connection part.
  • the second side wall surrounds the outer side of the first insulating member.
  • the second side wall surrounds the first insulator, and the first clamping portion is clamped toward the second side wall to ensure the insulating effect on the first connection portion, and meanwhile, the structure is compact and space occupation is reduced.
  • the card slot runs through the junction of the top wall and the second side wall.
  • the card slot runs through the connection between the top wall and the second side wall, so as to increase the connection area between the first clip part and the clip slot, and improve the connection stability between the first clip part and the second insulator .
  • the battery cell further includes: a second insulator, disposed between the end cover and the first connection part, for insulating and isolating the first connection part from the first connection part.
  • End cap the first insulator includes a first body and a protrusion, the first body is disposed between the first connecting portion and the main body, and one end of the first body is rotatably connected to the One end of the second insulator, the other end of the first body is a free end, the protrusion is formed on the side of the first body facing the first connection part, and the first connection part is set There is a through hole, and the protrusion is inserted into the through hole to fix the first insulator to the first connection part.
  • the first insulator is bent relative to the second insulator and then fixed to the adapter, which has a simple structure, facilitates assembly, and improves assembly efficiency.
  • the convex part is connected to the through hole by clamping or thermal fusion.
  • the convex part is clamped or hot-melt connected with the through hole, so as to ensure the stability of the connection between the first insulating part and the adapter part.
  • the first insulating part and the second insulating part are integrally formed.
  • the first insulating part and the second insulating part are integrally formed, which facilitates processing and reduces manufacturing costs.
  • the battery cell further includes: a third insulating member, the third insulating member is disposed between the first insulating member and the main body, and the third insulating member is bonded on the subject.
  • the third insulating part is bonded to the main body, which is convenient for assembly, and the third insulating part is used together with the first insulating part, which can further increase the insulating effect between the first connection part and the main body.
  • the first insulator is provided with a second gap for avoiding the second connecting portion.
  • the setting of the second notch ensures that after the first insulator and the adapter are assembled, the structure is compact and the space occupation is reduced.
  • the first insulating member is bonded to the main body.
  • the first insulating member is bonded to the main body, which has a simple structure and is easy to operate.
  • the present application provides a battery, including the battery cell in the first aspect.
  • the present application provides an electric device, including the battery cell in the first aspect.
  • the present application provides a method for manufacturing a battery cell, including: providing a casing, the casing has an opening; providing an end cap assembly, the end cap assembly includes an end cap and an electrode terminal, and the electrode Terminals are disposed on the end cap; an electrode assembly is provided, the electrode assembly is disposed in the housing, the electrode assembly includes a main body and a tab extending from an end of the main body along a first direction; an adapter is provided , the adapter includes a first connecting portion and a second connecting portion; providing a first insulator; disposing the end cap assembly on one side of the main body along a second direction, the second direction being the same as the The first direction is vertical; the first connection part is connected to the electrode terminal, and the second connection part is connected to the tab; the first insulating member is arranged between the first connection part and the electrode terminal. between the main body to insulate the first connecting portion from the main body; the electrode assembly is arranged in the casing, and the end cap covers the opening.
  • the present application provides a battery cell manufacturing equipment, including: providing a module for providing a housing, providing an end cap assembly, providing an electrode assembly, providing an adapter, and providing a first insulating member, the The casing has an opening, the end cap assembly includes an end cap and an electrode terminal, the electrode terminal is disposed on the end cap, the electrode assembly is disposed in the casing, the electrode assembly includes a main body and a A tab extending along the end of the first direction, the adapter includes a first connection part and a second connection part; an assembly module, used to arrange the end cap assembly on one side of the main body along the second direction side, the second direction is perpendicular to the first direction, the first connection part is connected to the electrode terminal, the second connection part is connected to the tab, and the first insulator disposed between the first connection part and the main body to insulate and isolate the first connection part from the main body, the electrode assembly is disposed in the casing, and the end cap covers the opening .
  • Fig. 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • FIG. 2 is a schematic diagram of an exploded structure of a battery provided in some embodiments of the present application.
  • FIG. 3 is a schematic diagram of an exploded structure of a battery cell provided in some embodiments of the present application.
  • Fig. 4 is a cross-sectional view of a battery cell provided by some embodiments of the present application.
  • Fig. 5 is a partial enlarged view of A place in Fig. 4;
  • Fig. 6 is a schematic structural diagram of a first insulating member provided by some embodiments of the present application.
  • Fig. 7 is a schematic structural diagram of a first insulating member provided by other embodiments of the present application.
  • Fig. 8 is a schematic structural diagram of a first insulating member provided in some other embodiments of the present application.
  • Fig. 9 is a cross-sectional view of the assembly structure of the adapter and the end cap assembly provided by some embodiments of the present application.
  • Fig. 10 is a partial enlarged view of place B in Fig. 9;
  • Fig. 11 is a cross-sectional view of the assembly structure of the adapter and the end cap assembly provided by other embodiments of the present application;
  • Fig. 12 is a partial enlarged view of C in Fig. 11;
  • Fig. 13 is a schematic structural diagram of a second insulating member provided by some embodiments of the present application.
  • Fig. 14 is a cross-sectional view of the assembly structure of the second insulator and the first insulator provided in some embodiments of the present application;
  • Fig. 15 is a partial enlarged view of D in Fig. 14;
  • Fig. 16 is a schematic diagram of the assembly of the second insulator and the first insulator provided in some embodiments of the present application;
  • Fig. 17 shows a schematic flowchart of a method for manufacturing a battery cell provided by some embodiments of the present application
  • Fig. 18 is a schematic block diagram of a battery cell manufacturing equipment provided by some embodiments of the present application.
  • Marking description 100-battery; 10-battery unit; 11-housing; 12-end cap assembly; 121-end cap; 122-electrode terminal; 13-electrode assembly; 131-main body; Adapter; 141-first connecting part; 1411-first surface; 1412-second surface; 1413-peripheral surface; 1414-step; 1415-through hole; 142-second connecting part; - the first insulating part; 151 - the first body; 1511 - the bottom wall; 1512 - the first side wall; 152 - the first clamping part; 153 - the convex part; 154 - the second gap; 161-first gap; 162-card slot; 163-top wall; 164-second side wall; 17-third insulating piece; 20-box; 21-first part; 22-second part; 200-controller ;300-motor; 1000-vehicle.
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • a battery refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity.
  • the battery mentioned in this application may include a battery module or a battery pack, and the like.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive pole piece, a negative pole piece and a separator.
  • a battery cell works primarily by moving metal ions between the positive and negative pole pieces.
  • 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, and the current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer, The current collector not coated with the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet 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, and the current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer, The current collector not coated with the negative electrode active material layer is used as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the material of the isolation film may be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene).
  • the electrode assembly includes a main body coated with an active material layer and a tab not coated with an active material layer, and the tab extends from an end of the main body.
  • the battery cell also includes an electrode terminal and an adapter.
  • the adapter includes a first connection part for connecting the electrode terminal and a second connection part for connecting the tab.
  • the first connection part is formed by bending relative to the second connection part. , there is an included angle between the first connecting portion and the second connecting portion.
  • the electrode terminal and the first connection part are usually fixed by welding, and a welding mark is formed on the surface of the first connection part facing the electrode assembly.
  • the outer layer of the electrode assembly is usually a separator, so as to facilitate the insulation and isolation of the electrode assembly from the casing or other components.
  • the inventors have found through research that the welding marks of the electrode terminals and the adapters will expose the surface of the first connecting part facing the electrode assembly, and when the battery cell is vibrated, or when the electrode assembly expands during the use of the battery, the electrode assembly will Moving toward the first connecting part, the solder print will pierce the insulating structure (such as the separator) on the outer layer of the electrode assembly, causing a short circuit between the positive and negative electrodes, and in severe cases, the battery cell will catch fire and explode.
  • the insulating structure such as the separator
  • the inventor has designed a battery cell after in-depth research.
  • Connectors and the first insulator The casing has an opening
  • the end cap assembly includes an end cap and an electrode terminal
  • the end cap is used to cover the opening
  • the electrode terminal is arranged on the end cap
  • the electrode assembly is arranged in the casing
  • the electrode assembly includes a main body coated with an active material layer and an uncoated
  • the end cap assembly is located on one side of the main body along the second direction
  • the first direction is perpendicular to the second direction
  • the adapter includes a The first connection part for connecting the electrode terminal and the second connection part for connecting the tabs
  • the first insulator is arranged between the first connection part and the main body
  • the first insulator is used for insulating and isolating the first connection part and the main body.
  • the first insulator is arranged between the first connection part and the main body, which is equivalent to adding a layer of insulation isolation protection between the first connection part and the main body, even if the battery cell is subjected to vibration, Or, the electrode assembly expands during use, causing the main body to move toward the first connection part. Since the first insulator is located between the first connection part and the main body, the solder print connecting the first connection part with the electrode terminal is covered by the first insulator. Blocking reduces the risk of soldering piercing the insulating structure of the outer layer of the main body (such as the isolation film), reduces the probability of shorting the first connection part and the main body, and improves the safety of the battery cell.
  • the battery cells disclosed in the embodiments of the present application can be used, but not limited, in electrical equipment such as vehicles, ships, or aircrafts.
  • the power supply system of the electrical equipment can be composed of the battery cells and batteries disclosed in this application.
  • the embodiment of the present application provides an electric device that uses a battery as a power source.
  • the electric device can be, but not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, Spacecraft and more.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.
  • a vehicle 1000 as an electric device according to an embodiment of the present application is taken as an example.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the interior of the vehicle 1000 is provided with a battery 100 , and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000 .
  • the battery 100 can be used for power supply of the vehicle 1000 , for example, the battery 100 can be used as an operating power source of the vehicle 1000 , used for the circuit system of the vehicle 1000 , for example, used for starting, navigating, and operating power requirements of the vehicle 1000 .
  • the vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1000 .
  • FIG. 2 is a schematic diagram of an exploded structure of a battery 100 provided in some embodiments of the present application.
  • the battery 100 includes a case 20 and battery cells 10 , and the battery cells 10 are accommodated in the case 20 .
  • the box body 20 is used to provide accommodating space for the battery cells 10 , and the box body 20 may adopt various structures.
  • the box body 20 may include a first part 21 and a second part 22, the first part 21 and the second part 22 cover each other, and the first part 21 and the second part 22 jointly define a of accommodation space.
  • the second part 22 can be a hollow structure with one end open, the first part 21 can be a plate-shaped structure, and the first part 21 covers the opening side of the second part 22, so that the first part 21 and the second part 22 jointly define an accommodation space ;
  • the first part 21 and the second part 22 can also be hollow structures with one side opening, and the opening side of the first part 21 is covered by the opening side of the second part 22 .
  • the battery 100 there may be multiple battery cells 10 , and the multiple battery cells 10 may be connected in series, in parallel or in parallel.
  • the mixed connection means that the multiple battery cells 10 are connected in series and in parallel.
  • a plurality of battery cells 10 can be directly connected in series, in parallel or mixed together, and then the whole composed of a plurality of battery cells 10 is accommodated in the box 20; of course, the battery 100 can also be a plurality of battery cells 10
  • the battery modules are firstly connected in series or in parallel or in combination, and then multiple battery modules are connected in series or in parallel or in combination to form a whole and accommodated in the box 20 .
  • the battery 100 may also include other structures, for example, the battery 100 may also include a current flow component for realizing electrical connection between a plurality of battery cells 10 .
  • each battery cell 10 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but not limited thereto.
  • the battery cell 10 provided in the embodiment of the present application is in the shape of a cube.
  • FIG. 3 is a schematic diagram of an exploded structure of a battery cell 10 provided in some embodiments of the present application.
  • the battery cell 10 refers to the smallest unit constituting the battery 100 .
  • the battery cell 10 includes a casing 11 , an end cap assembly 12 , an electrode assembly 13 , an adapter 14 and other functional components.
  • the casing 11 has an opening
  • the end cover assembly 12 includes an end cover 121 and an electrode terminal 122.
  • the end cover 121 is used to cover the opening to isolate the internal environment of the battery cell 10 from the external environment; the electrode terminal 122 is arranged on the end cover 121 .
  • the casing 11 is a component for matching with the end cap 121 to form the internal environment of the battery cell 10 , wherein the formed internal environment can be used to accommodate the electrode assembly 13 , electrolyte and other components.
  • the casing 11 and the end cover 121 can be independent components, and an opening can be provided on the casing 11 , and the internal environment of the battery cell 10 can be formed by covering the opening with the end cover 121 .
  • the housing 11 can be in various shapes and sizes, for example, rectangular parallelepiped, cylindrical, hexagonal prism and so on. Specifically, the shape of the casing 11 can be determined according to the specific shape and size of the electrode assembly 13.
  • the housing 11 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in this embodiment of the present application.
  • the housing 11 is introduced as an example in the form of a cuboid.
  • the end cover 121 refers to a component that covers the opening of the casing 11 to isolate the internal environment of the battery cell 10 from the external environment.
  • the shape of the end cover 121 can be adapted to the shape of the housing 11 to match the housing 11 .
  • the end cap 121 can be made of a material (such as aluminum alloy) with a certain hardness and strength, so that the end cap 121 is not easily deformed when being squeezed and collided, so that the battery cell 10 can have a higher Structural strength and safety performance can also be improved.
  • the electrode assembly 13 is disposed on the end cap 121 , and the electrode terminal 122 can be used to electrically connect with the electrode assembly 13 for outputting or inputting electric energy of the battery cell 10 .
  • the end cover 121 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 10 reaches a threshold value.
  • the material of the end cap 121 may also be various, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in this embodiment of the present application.
  • an insulating structure can be provided inside the end cover 121 , and the insulating structure can be used to isolate the electrical connection components in the housing 11 from the end cover 121 to reduce the risk of short circuit.
  • the insulating structure may be plastic, rubber and the like.
  • the electrode assembly 13 is a part where the electrochemical reaction occurs in the battery cell 10 .
  • the casing 11 may contain one or more electrode assemblies 13 .
  • the electrode assembly 13 is mainly formed by winding or laminating the positive pole piece and the negative pole piece, and usually a separator is provided between the positive pole piece and the negative pole piece, and the separator is used for insulating and isolating the positive pole piece and the negative pole piece.
  • the part of the positive pole piece and the negative pole piece coated with the active material layer constitutes the main body 131 of the electrode assembly 13 , and the parts of the positive pole piece and the negative pole piece not coated with the active material layer constitute tabs 132 .
  • the positive pole tab and the negative pole tab can be located at one end of the main body 131 together or at two ends of the main body 131 respectively.
  • the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab 132 is connected to the electrode terminal 122 to form a current loop.
  • the positive tab and the negative tab are located at both ends of the main body 131 along the length direction of the battery cell, and the tab 132 extends from the end of the main body 131 along the length direction of the battery cell.
  • the adapter 14 is a component for connecting the electrode terminal 122 and the tab 132 , and the electrical connection between the electrode terminal 122 and the tab 132 is realized through the adapter 14 .
  • FIG. 4 is a cross-sectional view of the battery cell 10 provided by some embodiments of the present application.
  • the housing is omitted in FIG. 4 ;
  • FIG. 5 is a partial enlarged view of A in FIG. 4 .
  • the present application provides a battery cell 10 .
  • the battery cell 10 includes a casing 11 , an end cap assembly 12 , an electrode assembly 13 , an adapter 14 and a first insulating member 15 .
  • the casing 11 has an opening
  • the end cover assembly 12 includes an end cover 121 and an electrode terminal 122
  • the end cover 121 is used to cover the opening
  • the electrode assembly 13 is disposed on the end cover 121 .
  • the electrode assembly 13 is disposed in the casing 11, the electrode assembly 13 includes a main body 131 coated with an active material layer and a tab 132 not coated with an active material layer, the tab 132 extends from the end of the main body 131 along the first direction X Extending, the end cap assembly 12 is located on one side of the main body 131 in the second direction Y, and the first direction X is perpendicular to the second direction Y.
  • the adapter 14 includes a first connecting portion 141 for connecting the electrode terminal 122 and a second connecting portion 142 for connecting the tab 132 .
  • the first insulator 15 is disposed between the first connection portion 141 and the main body 131 , and the first insulator 15 is used for isolating the first connection portion 141 and the main body 131 .
  • the direction indicated by the letter X is the first direction X
  • the first direction X may be the length direction of the end cover 121, that is, the length direction of the battery cell 10
  • the direction indicated by the letter Y is the second direction Y
  • the second direction Y may be the thickness direction of the end cover 121 .
  • the adapter 14 is a component for realizing the electrical connection between the electrode terminal 122 and the tab 132, and the adapter 14 can be a metal piece (for example, aluminum, copper or other conductive metals), which has good electrical conductivity. Since the tabs 132 and the electrode terminals 122 are located in two directions of the electrode assembly 13, the first connecting portion 141 and the second connecting portion 142 are arranged at an angle. In order to ensure the connection between the first connecting portion 141 and the electrode terminal 122, the first The connecting portion 141 may extend along the first direction X; in order to ensure the connection between the second connecting portion 142 and the tab 132 , the second connecting portion 142 may extend along the second direction Y. The first connecting portion 141 and the second connecting portion 142 can be bent so that the adapter 14 is L-shaped.
  • the first connecting portion 141 is welded to the electrode terminal 122 , and a solder mark 143 is formed on the surface of the first connecting portion 141 facing the main body 131 (see FIG. 4 and FIG. 5 ).
  • the first insulating member 15 is an electrically insulating component, for example, the first insulating member 15 can be rubber, plastic (such as PET (Polyethylene terephthalate, polyethylene terephthalate), PP (polypropylene, polypropylene) and the like).
  • PET Polyethylene terephthalate, polyethylene terephthalate
  • PP polypropylene, polypropylene
  • the first insulator 15 is disposed between the first connection part 141 and the main body 131, the first insulator 15 can be connected to the first connection part 141, or the first insulator 15 can be connected to the main body 131, or the first The insulator 15 may be connected to the first connection part 141 and the main body 131 .
  • the first insulator 15 is arranged between the first connection part 141 and the main body 131, which is equivalent to adding a layer of insulation protection between the first connection part 141 and the main body 131, Even if the battery cell 10 is subjected to vibration, or the electrode assembly 13 expands during use, causing the main body 131 to move toward the first connecting portion 141 , since the first insulating member 15 is located between the first connecting portion 141 and the main body 131 , The welding mark 143 connecting the first connecting part 141 and the electrode terminal 122 is blocked by the first insulating member 15, which reduces the risk of the welding mark 143 piercing the insulating structure (such as an isolation film) on the outer layer of the main body 131, and reduces the risk of the first connecting part. 141 and the main body 131 are short-circuited, which improves the safety of the battery cell 10 .
  • the battery cell 10 further includes: a second insulator 16 disposed between the end cap 121 and the first connecting portion 141 , and the second insulator 16 is used for To insulate and isolate the first connection portion 141 from the end cover 121; the first insulator 15 includes a first body 151 and a first clamping portion 152 disposed on the first body 151, and the first clamping portion 152 is clamped to the first connection part 141 or the second insulator 16 .
  • the second insulator 16 is a component used to insulate and isolate the first connection portion 141 from the end cap 121, and the second insulator 16 is arranged between the end cap 121 and the first connection portion 141, that is, the second insulator 16 is provided On the side of the end cap 121 facing the interior of the battery cell 10 .
  • the material of the second insulating member 16 may be the same as that of the first insulating member 15 .
  • first clamping portion 152 is clamped to the first connecting portion 141, the first insulating member 15 and the first connecting portion 141 are assembled together; the first clamping portion 152 is clamped to the second insulating member 16 In the embodiment, the first insulator 15 and the second insulator 16 are assembled in one body.
  • the first insulator 15 is clipped to the first connecting portion 141 or the second insulator 16 so as to facilitate assembly and fixation of the first insulator 15 and have a compact structure.
  • the edge of the first body 151 may be provided with transition rounded corners, so as to prevent the electrode assembly 13 from being too sharp and damage the electrode assembly 13 , and play a protective role.
  • the first engaging portion 152 is disposed on the edge of the first body 151 .
  • the first clamping portion 152 is located on the edge of the first body 151 , which is convenient for processing and assembling with the first connecting portion 141 or the second insulator 16 .
  • FIG. 7 is a schematic structural diagram of a first insulating member 15 provided in some other embodiments of the present application
  • FIG. 8 is a schematic structural diagram of a first insulating member 15 provided in some other embodiments of the present application.
  • the first body 151 includes a bottom wall 1511 and a first side wall 1512 , and the bottom wall 1511 is disposed between the first connecting portion 141 (see FIG. 3 ) and the main body.
  • the first side wall 1512 extends from the edge of the bottom wall 1511 toward the direction close to the end cover 121, the first side wall 1512 and the bottom wall 1511 enclose a space for accommodating the first connecting part 141, the first snap-fit
  • the portion 152 is disposed on the first side wall 1512 .
  • the thickness direction of the bottom wall 1511 may be the thickness direction of the end cover 121, and the first side wall 1512 extends from the edge of the bottom wall 1511 toward the direction close to the end cover 121, in other words, along the second direction Y, the first side wall 1512
  • the bottom wall 1511 protrudes from the edge of the bottom wall 1511 toward the end cover 121 .
  • the first side wall 1512 and the bottom wall 1511 can be integrally formed to facilitate processing and reduce manufacturing costs.
  • the bottom wall 1511 is located between the first connecting portion 141 and the main body 131 , and the bottom wall 1511 may cover a surface of the first connecting portion 141 facing the main body 131 .
  • the first side wall 1512 protrudes from the bottom wall 1511 toward the end cover 121 , and points toward the end cover 121 from the bottom wall 1511 .
  • the first side wall 1512 can extend to the surface of the first connecting portion 141 away from the main body 131 , or the second side wall 1512
  • the side wall 1512 may exceed the surface of the first connecting portion 141 facing away from the main body 131 , or, the first side wall 1512 may not exceed the surface of the first connecting portion 141 facing away from the main body 131 , that is, the first side wall 1512
  • the end portion away from the bottom wall 1511 is closer to the main body 131 than the surface of the first connecting portion 141 facing away from the main body 131 .
  • the first side wall 1512 and the bottom wall 1511 enclose a space for accommodating the first connecting portion 141 , and the first connecting portion 141 is accommodated in the space.
  • the first side wall 1512 can extend along the edge of the bottom wall 1511, and the first side wall 1512 can be a continuous structure, and the first side wall 1512 can be arranged around the edge of the bottom wall 1511; 1511 is a multi-stage structure set at intervals on the edge.
  • the first engaging portion 152 is disposed on the first side wall 1512 to facilitate the assembly of the first engaging portion 152 with the first connecting portion 141 or the second insulating member 16 .
  • the first engaging portion 152 can be disposed on an end of the first side wall 1512 away from the bottom wall 1511 .
  • the shape of the first engaging portion 152 can be linear; or, as shown in Figure 8, the shape of the first engaging portion 152 can also be arc-shaped; or, the first engaging portion
  • the shape of 152 may also be a polygon or the like.
  • the first side wall 1512 surrounds the first connection portion 141 , increases the insulation protection range of the first insulator 15 to the first connection portion 141 , and improves the insulation protection effect.
  • FIGS. 6 to 8 there are multiple first engaging portions 152 , and the plurality of first engaging portions 152 are distributed at intervals along the edge of the first body 151 .
  • a plurality of first clamping parts 152 are distributed at intervals along the edge of the first body 151 , so that the first insulator 15 and the first connecting part 141 have multiple connection positions, ensuring the connection between the first insulator 15 and the first connecting part 141 Firmness.
  • the number of the first engaging portions 152 is two, and the two first engaging portions 152 are disposed on two opposite edges of the first body 151 along the third direction Z (see FIG. 3 ).
  • the three directions Z are perpendicular to the first direction X and the second direction Y.
  • Figure 9 is a cross-sectional view of the assembly structure of the adapter 14 and the end cover assembly 12 provided by some embodiments of the present application
  • Figure 10 is a partial enlarged view of B in Figure 9
  • Figure 11 is another part of the application
  • Some embodiments provide a cross-sectional view of the assembly structure of the adapter 14 and the end cover assembly 12
  • FIG. 12 is a partial enlarged view at point C of FIG. 11 .
  • the first engaging portion 152 is engaged with the first connecting portion 141; as shown in FIG. 9 and FIG.
  • the engaging portion 152 is engaged with the edge of the first surface 1411; or, as shown in FIG. 11 and FIG. 12 , the first connecting portion 141 has a first surface 1411 facing the end cover 121 and a second surface 1412 facing away from the end cover 121 And the outer peripheral surface 1413 connecting the first surface 1411 and the second surface 1412 , the outer peripheral surface 1413 is provided with a step 1414 , and the first engaging portion 152 is engaged with the step 1414 .
  • the first engaging portion 152 may be engaged with the edge of the first surface 1411 , and the first engaging portion 152 cooperates with the first surface 1411 ; or , the first engaging portion 152 can be engaged with the step 1414 on the outer peripheral surface 1413 of the first connecting portion 141 , and the first engaging portion 152 is matched with the outer peripheral surface 1413 .
  • the assembly is simple and easy to operate; in the embodiment in which the first clamping portion 152 is clamped on the step 1414, the setting of the step 1414 reduces The space occupied by the assembled structure of the first clamping part 152 and the first connecting part 141 in the second direction Y is reduced, which is convenient for assembly.
  • the second insulator 16 is provided with a first notch 161 for avoiding the first engaging portion 152 .
  • the first notch 161 is a missing part of the second insulator 16 . After the first engaging portion 152 is assembled with the first connecting portion 141 , the first engaging portion 152 can be exposed through the first notch 161 .
  • the setting of the first notch 161 prevents the first clamping portion 152 from interfering with the second insulator 16 when assembling the first connecting portion 141 , reduces assembly difficulty, improves assembly efficiency, and at the same time makes the structure compact.
  • the first clamping portion 152 is clamped to the second insulating member 16, and the second insulating member 16 is provided with a clamping groove 162 for cooperating with the first clamping portion 152, and the first clamping portion 152 Fastened to the card slot 162 .
  • the provision of the slot 162 facilitates the assembly of the first insulator 15 and the second insulator 16 , and ensures the stability of the assembly of the first insulator 15 and the second insulator 16 .
  • FIG. 13 is a schematic structural diagram of the second insulator 16 provided in some embodiments of the present application
  • FIG. 14 is a cross-sectional view of the assembly structure of the second insulator 16 and the first insulator 15 provided in some embodiments of the present application.
  • FIG. 15 is a partial enlarged view of D in FIG. 14 . According to some embodiments of the present application, as shown in FIGS.
  • the second insulator 16 includes a top wall 163 and a second side wall 164 , and the top wall 163 is disposed between the first connecting portion 141 and the end cover 121 ,
  • the second side wall 164 extends from the edge of the top wall 163 in a direction away from the end cover 121 , the second side wall 164 and the top wall 163 enclose a space for accommodating the first connecting portion 141 , and the slot 162 is disposed on the top wall 163 The junction with the second side wall 164 .
  • the second sidewall 164 extends from the edge of the top wall 163 in a direction away from the end cap 121 , that is, the second sidewall 164 protrudes from the top wall 163 along the second direction Y from the top wall 163 toward the electrode assembly 13 .
  • the second side wall 164 can be integrally formed with the top wall 163 to facilitate processing and reduce manufacturing costs.
  • the slot 162 is disposed at the junction of the top wall 163 and the second side wall 164 , the slot 162 may be located inside the second side wall 164 , or the slot 162 may also be located outside the second side wall 164 .
  • the first engaging portion 152 is located in the space enclosed by the second side wall 164 and the top wall 163 , and the first engaging portion 152 is formed from the inner side of the second side wall 164 . Buckle to the card slot 162 .
  • the first engaging portion 152 is located outside the space enclosed by the second side wall 164 and the top wall 163 , and the first engaging portion 152 is formed from the outer side of the second side wall 164 . Buckle to the card slot 162 .
  • the slot 162 is disposed at the junction of the top wall 163 and the second side wall 164 , and the slot 162 may extend along the second direction Y from a side of the top wall 163 facing the electrode assembly 13 .
  • the second side wall 164 surrounds the first connecting portion 141 and can increase the insulating effect on the first connecting portion 141 .
  • the second side wall 164 surrounds the outer side of the first insulating member 15 .
  • the second sidewall 164 surrounds the outer side of the first insulating member 15 , in other words, at least part of the first insulating member 15 is located in the space enclosed by the second sidewall 164 and the top wall 163 .
  • the first locking portion 152 extends into the locking groove 162 from the inner side toward the outer side of the second side wall 164 .
  • the second side wall 164 surrounds the first insulating member 15 , and the first clamping portion 152 is clamped toward the second side wall 164 to ensure the insulation effect on the first connecting portion 141 , and at the same time, the structure is compact to reduce space occupation.
  • the slot 162 runs through the junction of the top wall 163 and the second side wall 164 .
  • the slot 162 runs through the joint between the top wall 163 and the side wall, and may be that the slot 162 runs through the joint between the top wall 163 and the side wall along the thickness direction of the side wall.
  • the first engaging portion 152 is engaged in the engaging slot 162 from the inner side of the second side wall 164 , and the first engaging portion 152 is engaged in the engaging slot 162 .
  • the groove wall of the part 152 and the locking groove 162 can have a larger connection area; at the same time, the first locking part 152 can be driven out of the locking groove 162 on the outside of the second side wall 164, so as to facilitate the realization of the first insulator 15 and the second Removal of the insulation 16.
  • the slot 162 runs through the junction of the top wall 163 and the second side wall 164 , so as to increase the connection area between the first locking portion 152 and the slot 162 and improve the connection between the first locking portion 152 and the second insulator 16 stability.
  • the battery cell 10 further includes: a second insulator 16 disposed between the end cover 121 and the first connecting portion 141, and the second insulator 16 is used for insulating and isolating The first connecting part 141 and the end cap 121; the first insulator 15 includes a first body 151 and a protrusion 153, the first body 151 is disposed between the first connecting part 141 and the main body 131, and one end of the first body 151 is rotatable The ground is connected to one end of the second insulator 16, the other end of the first body 151 is a free end, the convex portion 153 is formed on the side of the first body 151 facing the first connecting portion 141, and the first connecting portion 141 is provided with a through The hole 1415 , the protru
  • the second insulator 16 is a component for insulating the first connection portion 141 from the end cover 121 .
  • the second insulating member 16 includes a top wall 163 and a second side wall 164 , one end of the first body 151 is connected to an end of the second side wall 164 away from the top wall 163 .
  • One end of the first body 151 is rotatably connected to one side of the second insulator 16 , and the first body 151 can rotate relative to the second insulator 16 so that the first body 151 covers the first connecting portion 141 facing the main body. 131 side.
  • the convex portion 153 is inserted into the through hole 1415 to fix the first insulating member 15 to the first connecting portion 141. After the convex portion 153 is inserted into the through hole 1415, the convex portion 153 and the through hole 1415 form a position limit, and the convex portion 153 is restricted from leaving the through hole. 1415 , so as to realize the fixing of the first insulating member 15 and the first connecting portion 141 .
  • the first insulator 15 is bent relative to the second insulator 16 and then fixed to the adapter 14 , which has a simple structure, facilitates assembly, and improves assembly efficiency.
  • the convex portion 153 is connected to the through hole 1415 by clamping or thermal fusion.
  • the protrusion 153 is engaged with the through hole 1415
  • the protrusion 153 and the through hole 1415 form a limit
  • the protrusion 153 is engaged with the wall of the through hole 1415 to prevent the protrusion
  • the portion 153 escapes from the through hole 1415 .
  • the convex portion 153 is a buckle. When the buckle enters the through hole 1415, the buckle is squeezed and deformed. The first connecting portion 141 is clamped and fixed.
  • the convex portion 153 is inserted into the through hole 1415 and then melted, and the molten convex portion 153 fills the through hole 1415. After the convex portion 153 solidifies, the convex portion 153 and the through hole 1415 are solidified.
  • the through hole 1415 forms a limit.
  • the through hole 1415 can be a stepped hole or a diameter-reducing hole, as long as the convex portion 153 cannot escape from the through hole 1415 after the convex portion 153 fills the through hole 1415 .
  • the protruding portion 153 is clamped or hot-melt connected with the through hole 1415 to ensure the stability of the connection between the first insulator 15 and the adapter 14 .
  • the first insulating member 15 and the second insulating member 16 are integrally formed.
  • first body 151 of the first insulator 15 is rotatably connected to the second insulator 16.
  • first body 151 and the second Creases are provided at the connection of the insulating member 16 to facilitate bending of the first body 151 relative to the second insulating member 16 so that the first body 151 is fixed to the first connecting portion 141 .
  • the first insulator 15 and the second insulator 16 are integrally formed to facilitate processing and reduce manufacturing costs.
  • the first body 151 can be bonded to the first connecting portion 141 or the second insulating member 16 , and after the first body 151 is bent relative to the second insulating member 16 , the first body 151 covers the second insulating member 16 .
  • the surface of a connecting portion 141 facing the electrode assembly 13 , the first body 151 may be bonded to this surface, or the first body 151 is bonded to this surface but bonded to the second insulating member 16 .
  • the battery cell 10 further includes: as shown in FIG. Bonded to the main body 131.
  • the third insulator 17 is a component used for electrical insulation, the third insulator 17 is arranged between the first insulator 15 and the main body 131, along the second direction Y, the first insulator 15, the third insulator 17 and the main body 131 are arranged in sequence.
  • the third insulator 17 is bonded to the main body 131 for easy assembly, and the third insulator 17 is used together with the first insulator 15 to further increase the insulating effect between the first connecting portion 141 and the main body 131 .
  • the first insulator 15 is provided with a second notch 154 for avoiding the second connection portion 142 (see FIG. 3 ).
  • the arrangement of the second notch 154 ensures that after the first insulating member 15 and the adapter member 14 are assembled, the structure is compact and the space occupation is reduced.
  • the first insulating member 15 is bonded to the main body 131 .
  • the first insulator 15 is bonded to the main body 131, and has a simple structure and is easy to operate.
  • the first insulating member 15 may be an insulating tape, or the surface of the first insulating member 15 is coated with an adhesive layer.
  • the present application also provides a battery, including the battery cell 10 described in any of the above schemes.
  • the present application also provides an electric device, including the battery cell 10 described in any solution above, and the battery cell 10 is used to provide electric energy for the electric device.
  • the electric device may be any of the aforementioned devices or systems using the battery cell 10 .
  • the present application provides a battery cell 10, the battery cell 10 is a prismatic battery cell, which includes a casing 11, an end cap assembly 12, an electrode The assembly 13 , the adapter 14 , the first insulating member 15 , the second insulating member 16 and the third insulating member 17 .
  • the casing 11 has an opening
  • the end cover assembly 12 includes an end cover 121 and an electrode terminal 122 , the end cover 121 is used to cover the opening, and the electrode terminal 122 is disposed on the end cover 121 .
  • the electrode assembly 13 is disposed in the casing 11, the electrode assembly 13 includes a main body 131 coated with an active material layer and a tab 132 not coated with an active material layer, the tab 132 extends from the end of the main body 131 along the first direction X Extending, the end cover assembly 12 is located on one side of the main body 131 along the second direction Y, the first direction X is perpendicular to the second direction Y, and the second direction Y may be the thickness direction of the end cover 121 .
  • the adapter 14 includes a first connecting portion 141 for connecting the electrode terminal 122 and a second connecting portion 142 for connecting the tab 132 .
  • the first insulator 15 is disposed between the first connecting portion 141 and the main body 131 for insulating and isolating the first connecting portion 141 and the main body 131 .
  • the second insulator 16 is disposed between the end cover 121 and the first connection portion 141 for insulating the first connection portion 141 from the end cover 121 .
  • the third insulator 17 is disposed between the first insulator 15 and the main body 131 , and the third insulator 17 is adhered to the main body 131 .
  • the first insulator 15 includes a first body 151 and a first engaging portion 152.
  • the first body 151 includes a bottom wall 1511 and a first side wall 1512.
  • the bottom wall 1511 is disposed between the first connecting portion 141 and the body 131.
  • the side wall 1512 extends from the edge of the bottom wall 1511 toward the direction close to the end cover 121 , the first side wall 1512 and the bottom wall 1511 enclose a space for accommodating the first connecting portion 141 , and the first locking portion 152 is disposed on the second One side wall 1512.
  • the second insulator 16 includes a top wall 163 and a second side wall 164.
  • the top wall 163 is disposed between the first connecting portion 141 and the end cover 121.
  • the second side wall 164 extends from the edge of the top wall 163 to the side of the end cover 121.
  • the second side wall 164 and the top wall 163 enclose a space for accommodating the first connecting part 141 , and the connection between the top wall 163 and the second side wall 164 is provided with a slot that matches the first engaging part 152 162 , the second side wall 164 surrounds the outer side of the first insulating member 15 .
  • the first locking portion 152 extends from the inner side to the outer side of the second side wall 164 and is locked into the locking groove 162 .
  • an insulation isolation can be formed between the first connection part 141 and the main body 131, the insulation effect between the first connection part 141 and the main body 131 can be improved, and the short distance between the first connection part 141 and the main body 131 can be reduced.
  • the probability of being connected improves the safety of the battery cell 10.
  • FIG. 17 shows a schematic flowchart of a method 400 for manufacturing a battery cell provided by some embodiments of the present application.
  • the manufacturing method 400 of a battery cell may include:
  • the end cap assembly 12 includes an end cap 121 and an electrode terminal 122, and the electrode terminal 122 is disposed on the end cap 121;
  • the electrode assembly 13 is disposed in the housing 11, the electrode assembly 13 includes a main body 131 and a tab 132 extending from the end of the main body 131 along the first direction X;
  • the adapter 14 includes the first connection part 141 and the second connection part 142; provide the first insulating part 15;
  • connection part 141 Connects the first connection part 141 to the electrode terminal 122, and connect the second connection part 142 to the tab 132;
  • Fig. 18 shows a schematic block diagram of a battery cell manufacturing device 500 provided by some embodiments of the present application.
  • the battery cell manufacturing equipment 500 may include: a providing module 501 and an assembling module 502 .
  • the assembly module 502 is used to arrange the end cover assembly 12 on one side of the main body 131 along the second direction Y, the second direction Y is perpendicular to the first direction X, connect the first connecting part 141 to the electrode terminal 122, and connect the second
  • the connection part 142 is connected to the tab 132, and the first insulator 15 is arranged between the first connection part 141 and the main body 131 to insulate and isolate the first connection part 141 and the main body 131, and the electrode assembly 13 is arranged in the casing 11 , cover the opening with the end cap 121 .

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Abstract

本申请实施例提供一种电池单体、电池、用电设备、电池单体的制造方法及设备。电池单体，包括：壳体，具有开口；端盖组件，包括端盖和电极端子，所述端盖用于覆盖所述开口，所述电极端子设置于所述端盖；电极组件，设置于所述壳体内，所述电极组件包括涂覆有活性物质层的主体和未涂覆有活性物质层的极耳，极耳从主体沿第一方向的端部延伸出，所述端盖组件位于所述主体沿第二方向的一侧，所述第一方向垂直于所述第二方向；转接件，包括用于连接所述电极端子的第一连接部和用于连接所述极耳的第二连接部；第一绝缘件，设置于所述第一连接部与所述主体之间，用于绝缘隔离所述第一连接部与所述主体。该电池单体，具有较高的安全性。

Description

电池单体、电池、用电设备、电池单体的制造方法及设备 技术领域
本申请涉及电池技术领域，特别是涉及一种电池单体、电池、用电设备、电池单体的制造方法及设备。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
在电池技术的发展中，除了提高电池的能量密度外，安全性也是一个不可忽视的问题。因此，如何提高电池的安全性，是电池技术一个亟需解决的技术问题。
发明内容
本申请的目的在于提供一种电池单体、电池、用电设备、电池单体的制造方法及设备。该电池单体，具有较高的安全性。
本申请是通过如下技术方案实现的：
第一方面，本申请提供了一种电池单体，包括：壳体，具有开口；端盖组件，包括端盖和电极端子，所述端盖用于覆盖所述开口，所述电极端子设置于所述端盖；电极组件，设置于所述壳体内，所述电极组件包括涂覆有活性物质层的主体和未涂覆有活性物质层的极耳，极耳从主体沿第一方向的端部延伸出，所述端盖组件位于所述主体沿第二方向的一侧，所述第一方向垂直于所述第二方向；转接件，包括用于连接所述电极端子的第一连接部和用于连接所述极耳的第二连接部；第一绝缘件，设置于所述第一连接部与所述主体之间，用于绝缘隔离所述第一连接部与所述主体。
本申请实施例的技术方案，第一绝缘件设置于第一连接部与主体之间，相当于在第一连接部与主体之间增加了一层绝缘隔离保护，即使电池单体因受到振动，或者，在使用过程中电极组件膨胀，导致主体朝向第一连接部移动，由于第一绝缘件位于第一连接部和主体之间，第一连接部与电极端子连接的焊印被第一绝缘件阻挡，降低了焊印刺穿主体外层的绝缘结构(如隔离膜)的风险，降低了第一连接部和主体短接的概率，提高了电池单体的安全性。
根据本申请的一些实施例，所述电池单体还包括：第二绝缘件，设置于所述端盖与所述第一连接部之间，用于绝缘隔离所述第一连接部与所述端盖；所述第一绝缘件包括第一本体和设置于所述第一本体的第一卡接部，所述第一卡接部卡接于所述第一连接部或所述第二绝缘件。
在上述方案中，将第一绝缘件卡接于第一连接部或第二绝缘件，以便于实现第一绝缘件的装配固定，并且结构紧凑。
根据本申请的一些实施例，所述第一卡接部设置于所述第一本体的边缘。
在上述方案中，第一卡接部位于第一本体的边缘，便于加工，便于实现与第一连接部或第二绝缘件的装配。
根据本申请的一些实施例，所述第一本体包括底壁和第一侧壁，所述底壁设置于所述第一连接部与所述主体之间，所述第一侧壁从所述底壁的边缘向靠近所述端盖的方向延伸，所述第一侧壁与所述底壁围成用于容纳所述第一连接部的空间，所述第一卡接部设置于所述第一侧壁。
在上述方案中，第一侧壁包围第一连接部，增加第一绝缘件对第一连接部的绝缘保护范围，提高绝缘保护效果。
根据本申请的一些实施例，所述第一卡接部的数量为多个，多个所述第一卡接部沿所述第 一本体的边缘间隔分布。
在上述方案中，多个第一卡接部沿第一本体的边缘间隔分布，使得第一绝缘件与第一连接部具有多个连接位置，保证第一绝缘件与第一连接部的连接牢固性。
根据本申请的一些实施例，所述第一卡接部卡接于所述第一连接部；所述第一连接部具有面向所述端盖的第一表面，所述第一卡接部卡接于所述第一表面的边缘；或者，所述第一连接部具有面向所述端盖的第一表面、背离所述端盖的第二表面以及连接所述第一表面和所述第二表面的外周面，所述外周面上设置有台阶，所述第一卡接部卡接于所述台阶。
在上述方案中，在第一卡接部卡接于第一表面的边缘的实施例中，装配简单，便于操作；在第一卡接部卡接于台阶的实施例中，台阶的设置，减少了第一卡接部与第一连接部装配后的空间占用，便于装配。
根据本申请的一些实施例，所述第二绝缘件设置有用于避让所述第一卡接部的第一缺口。
在上述方案中，第一缺口的设置，避免第一卡接部与第一连接部装配时与第二绝缘件干涉，降低装配难度，提高装配效率。
根据本申请的一些实施例，所述第一卡接部卡接于所述第二绝缘件，所述第二绝缘件设置有用于与所述第一卡接部配合的卡槽，所述第一卡接部卡接于所述卡槽。
在上述方案中，卡槽的设置，便于实现第一绝缘件与第二绝缘件的装配，保证第一绝缘件与第二绝缘件的装配稳定性。
根据本申请的一些实施例，所述第二绝缘件包括顶壁和第二侧壁，所述顶壁设置于所述第一连接部和所述端盖之间，所述第二侧壁从所述顶壁的边缘向背离所述端盖的方向延伸，所述第二侧壁与所述顶壁围成用于容纳所述第一连接部的空间，所述卡槽设置于所述顶壁与所述第二侧壁的连接处。
在上述方案中，第二侧壁包围第一连接部，能够增加对第一连接部的绝缘效果。
根据本申请的一些实施例，所述第二侧壁围绕于所述第一绝缘件的外侧。
在上述方案中，第二侧壁包围第一绝缘件，第一卡接部朝向第二侧壁卡接，保证对第一连接部的绝缘效果，同时，结构紧凑，减少空间占用。
根据本申请的一些实施例，所述卡槽贯穿所述顶壁与所述第二侧壁的连接处。
在上述方案中，卡槽贯穿顶壁和第二侧壁的连接处，以便于增大第一卡接部与卡槽的连接面积，提高第一卡接部与第二绝缘件的连接稳定性。
根据本申请的一些实施例，所述电池单体还包括：第二绝缘件，设置于所述端盖与所述第一连接部之间，用于绝缘隔离所述第一连接部与所述端盖；所述第一绝缘件包括第一本体和凸部，所述第一本体设置于所述第一连接部和所述主体之间，所述第一本体的一端可转动地连接于所述第二绝缘件的一端，所述第一本体的另一端为自由端，所述凸部形成在所述第一本体的面向所述第一连接部的一侧，所述第一连接部设置有通孔，所述凸部***所述通孔以使所述第一绝缘件固定于所述第一连接部。
在上述方案中，第一绝缘件相对于第二绝缘件折弯后与转接件固定，结构简单，便于装配，提高装配效率。
根据本申请的一些实施例，所述凸部与所述通孔卡接或热熔连接。
在上述方案中，凸部与通孔卡接或热熔连接，保证第一绝缘件与转接件的连接稳定性。
根据本申请的一些实施例，所述第一绝缘件与所述第二绝缘件一体成型。
在上述方案中，第一绝缘件与第二绝缘件一体成型，便于加工，降低制造成本。
根据本申请的一些实施例，所述电池单体还包括：第三绝缘件，所述第三绝缘件设置于所述第一绝缘件和所述主体之间，所述第三绝缘件粘接于所述主体。
在上述方案中，第三绝缘件粘接于主体，便于装配，第三绝缘件与第一绝缘件同时使用， 能够进一步增加第一连接部与主体之间的绝缘效果。
根据本申请的一些实施例，所述第一绝缘件设置有用于避让所述第二连接部的第二缺口。
在上述方案中，第二缺口的设置，保证第一绝缘件与转接件装配后，结构紧凑，减少空间占用。
根据本申请的一些实施例，所述第一绝缘件粘接于所述主体。
在上述方案中，第一绝缘件粘接于主体，结构简单，便于操作。
第二方面，本申请提供了一种电池，包括第一方面的电池单体。
第三方面，本申请提供了一种用电设备，包括第一方面的电池单体。
第四方面，本申请提供了一种电池单体的制造方法，包括：提供壳体，所述壳体具有开口；提供端盖组件，所述端盖组件包括端盖和电极端子，所述电极端子设置于所述端盖；提供电极组件，所述电极组件设置于所述壳体内，所述电极组件包括主体和从所述主体沿第一方向的端部延伸的极耳；提供转接件，所述转接件包括第一连接部和第二连接部；提供第一绝缘件；将所述端盖组件设置于所述主体沿第二方向的一侧，所述第二方向与所述第一方向垂直；将所述第一连接部连接于所述电极端子，将所述第二连接部连接于所述极耳；将所述第一绝缘件设置于所述第一连接部与所述主体之间，以绝缘隔离所述第一连接部与所述主体；将所述电极组件设置于所述壳体内，将所述端盖覆盖所述开口。
第五方面，本申请提供了一种电池单体的制造设备，包括：提供模块，用于提供壳体、提供端盖组件、提供电极组件、提供转接件及提供第一绝缘件，所述壳体具有开口，所述端盖组件包括端盖和电极端子，所述电极端子设置于所述端盖，所述电极组件设置于所述壳体内，所述电极组件包括主体和从所述主体沿第一方向的端部延伸的极耳，所述转接件包括第一连接部和第二连接部；组装模块，用于将所述端盖组件设置于所述主体沿第二方向的一侧，所述第二方向与所述第一方向垂直，将所述第一连接部连接于所述电极端子，将所述第二连接部连接于所述极耳，将所述第一绝缘件设置于所述第一连接部与所述主体之间，以绝缘隔离所述第一连接部与所述主体，将所述电极组件设置于所述壳体内，将所述端盖覆盖所述开口。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
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。
图1为本申请一些实施例提供的车辆的结构示意图；
图2为本申请一些实施例提供的电池的分解结构示意图；
图3为本申请一些实施例提供的电池单体的分解结构示意图；
图4为本申请一些实施例提供的电池单体的剖视图；
图5为图4的A处局部放大图；
图6为本申请一些实施例提供的第一绝缘件的结构示意图；
图7为本申请另一些实施例提供的第一绝缘件的结构示意图；
图8为本申请又一些实施例提供的第一绝缘件的结构示意图；
图9为本申请一些实施例提供的转接件与端盖组件装配结构的剖视图；
图10为图9的B处局部放大图；
图11为本申请另一些实施例提供的转接件与端盖组件装配结构的剖视图；
图12为图11的C处局部放大图；
图13为本申请一些实施例提供的第二绝缘件的结构示意图；
图14为本申请一些实施例提供的第二绝缘件与第一绝缘件装配结构的剖视图；
图15为图14的D处局部放大图；
图16为本申请一些实施例提供的第二绝缘件与第一绝缘件的装配示意图；
图17示出了本申请一些实施例提供的电池单体的制造方法的示意性流程图；
图18为本申请一些实施例提供的电池单体的制造设备的示意性框图；
在附图中，附图并未按照实际的比例绘制。
标记说明：100-电池；10-电池单体；11-壳体；12-端盖组件；121-端盖；122-电极端子；13-电极组件；131-主体；132-极耳；14-转接件；141-第一连接部；1411-第一表面；1412-第二表面；1413-外周面；1414-台阶；1415-通孔；142-第二连接部；143-焊印；15-第一绝缘件；151-第一本体；1511-底壁；1512-第一侧壁；152-第一卡接部；153-凸部；154-第二缺口；16-第二绝缘件；161-第一缺口；162-卡槽；163-顶壁；164-第二侧壁；17-第三绝缘件；20-箱体；21-第一部分；22-第二部分；200-控制器；300-马达；1000-车辆。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
除非另有定义，本文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；本文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。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“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。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，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：存在A，同时存在A和B，存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连 接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；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或两个元件的相互作用关系。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实施例中的具体含义。
在本申请中，所提及的电池是指包括一个或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。例如，本申请中所提及的电池可以包括电池模块或电池包等。
电池单体包括电极组件和电解液，电极组件由正极极片、负极极片和隔离膜组成。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，未涂敷正极活性物质层的集流体凸出于已涂覆正极活性物质层的集流体，未涂敷正极活性物质层的集流体作为正极极耳。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，未涂敷负极活性物质层的集流体凸出于已涂覆负极活性物质层的集流体，未涂敷负极活性物质层的集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)等。
在本申请中，电极组件包括涂覆有活性物质层的主体和未涂敷活性物质层的极耳，极耳从主体的端部延伸出。
电池单体还包括电极端子和转接件，转接件包括用于连接电极端子的第一连接部和用于连接极耳第二连接部，第一连接部相对于第二连接部折弯形成，第一连接部和第二连接部之间具有夹角。电极端子与第一连接部通常采用焊接的方式固定，在第一连接部的面向电极组件的表面形成焊印。
以电极组件为卷绕式电极组件为例，电极组件在卷绕成型后，电极组件的外层通常为隔离膜，以便于电极组件与壳体或其他部件绝缘隔离。
电池技术的发展要同时考虑多方面的设计因素，例如，能量密度、放电容量、充放电倍率等性能参数，另外，还需要考虑电池的安全性。
对于电池单体来说，影响安全性的因素很多，例如，环境温度、装配导致部件损坏(如极耳开裂)、析锂、转接件与电极组件短接等。
发明人研究发现，电极端子与转接件的焊印会露出第一连接部的面向电极组件的表面，电池单体在受到振动时，或者，电池在使用过程中电极组件膨胀时，电极组件会朝向第一连接部移动，使得焊印刺穿电极组件外层的绝缘结构(如隔离膜)，造成正负极短路，严重时引起电池单体起火***。
鉴于此，为了解决转接件与电极组件搭接而引发安全风险的问题，发明人经过深入研究，设计了一种电池单体，该电池单体包括壳体、端盖组件、电极组件、转接件及第一绝缘件。壳体具有开口，端盖组件包括端盖和电极端子，端盖用于覆盖开口，电极端子设置于端盖，电极组件设置于壳体内，电极组件包括涂敷于活性物质层的主体和未涂敷活性物质层的极耳，极耳从主体沿第一方向的端部延伸出，端盖组件位于主体沿第二方向的一侧，第一方向垂直于第二方向，转接件包括用于连接电极端子的第一连接部和用于连接极耳的第二连接部，第一绝缘件设置于第一连接部与主体之间，第一绝缘件用于绝缘隔离第一连接部与主体。通过在第一连接部和主体之间设置第一绝缘件，使得第一连接部和主体被绝缘隔离。
在这样的电池单体中，第一绝缘件设置于第一连接部与主体之间，相当于在第一连接部与主体之间增加了一层绝缘隔离保护，即使电池单体因受到振动，或者，在使用过程中电极组件膨胀，导致主体朝向第一连接部移动，由于第一绝缘件位于第一连接部和主体之间，第一连接部与电极端 子连接的焊印被第一绝缘件阻挡，降低了焊印刺穿主体外层的绝缘结构(如隔离膜)的风险，降低了第一连接部和主体短接的概率，提高了电池单体的安全性。
本申请实施例公开的电池单体可以但不限用于车辆、船舶或飞行器等用电设备中。可以使用具备本申请公开的电池单体、电池等组成该用电设备的电源***。
本申请实施例提供一种使用电池作为电源的用电设备，用电设备可以为但不限于手机、平板电脑、笔记本电脑、电动玩具、电动工具、电动自行车、电动摩托车、电动汽车、轮船、航天器等等。其中，电动玩具可以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，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电设备为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆1000的结构示意图。车辆1000可以为燃油汽车、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。车辆1000的内部设置有电池100，电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电，例如，电池100可以作为车辆1000的操作电源，用于车辆1000的电路***，例如用于车辆1000的启动、导航和运行时的工作用电需求。
车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100为马达300供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池100不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
请参照图2，图2为本申请一些实施例提供的电池100的分解结构示意图。电池100包括箱体20和电池单体10，电池单体10容纳于箱体20内。其中，箱体20用于为电池单体10提供容纳空间，箱体20可以采用多种结构。在一些实施例中，箱体20可以包括第一部分21和第二部分22，第一部分21与第二部分22相互盖合，第一部分21和第二部分22共同限定出用于容纳电池单体10的容纳空间。第二部分22可以为一端开口的空心结构，第一部分21可以为板状结构，第一部分21盖合于第二部分22的开口侧，以使第一部分21与第二部分22共同限定出容纳空间；第一部分21和第二部分22也可以是均为一侧开口的空心结构，第一部分21的开口侧盖合于第二部分22的开口侧。
在电池100中，电池单体10可以是多个，多个电池单体10之间可串联或并联或混联，混联是指多个电池单体10中既有串联又有并联。多个电池单体10之间可直接串联或并联或混联在一起，再将多个电池单体10构成的整体容纳于箱体20内；当然，电池100也可以是多个电池单体10先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于箱体20内。电池100还可以包括其他结构，例如，该电池100还可以包括汇流部件，用于实现多个电池单体10之间的电连接。
其中，每个电池单体10可以为二次电池或一次电池；还可以是锂硫电池、钠离子电池或镁离子电池，但不局限于此。本申请实施例提供的电池单体10呈方体。
请参照图3，图3为本申请一些实施例提供的电池单体10的分解结构示意图。电池单体10是指组成电池100的最小单元。如图3，电池单体10包括有壳体11、端盖组件12、电极组件13、转接件14以及其他的功能性部件。壳体11具有开口，端盖组件12包括端盖121和电极端子122，端盖121用于覆盖于开口，以将电池单体10的内部环境与外部环境隔绝；电极端子122设置于端盖121。
壳体11是用于配合端盖121以形成电池单体10的内部环境的组件，其中，形成的内部环境可以用于容纳电极组件13、电解液以及其他部件。壳体11和端盖121可以是独立的部件，可以于壳体11上设置开口，通过在开口处使端盖121盖合开口以形成电池单体10的内部环境。壳体11可以是多种形状和多种尺寸的，例如，长方体形、圆柱体形、六棱柱形等。具体地，壳体11的 形状可以根据电极组件13的具体形状和尺寸大小来确定。壳体11的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。本申请实施例以壳体11为长方体形为例介绍。
端盖121是指盖合于壳体11的开口处以将电池单体10的内部环境隔绝于外部环境的部件。不限地，端盖121的形状可以与壳体11的形状相适应以配合壳体11。可选地，端盖121可以由具有一定硬度和强度的材质(如铝合金)制成，这样，端盖121在受挤压碰撞时就不易发生形变，使电池单体10能够具备更高的结构强度，安全性能也可以有所提高。电极组件13设置于端盖121，电极端子122可以用于与电极组件13电连接，以用于输出或输入电池单体10的电能。在一些实施例中，端盖121上还可以设置有用于在电池单体10的内部压力或温度达到阈值时泄放内部压力的泄压机构。端盖121的材质也可以是多种的，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。在一些实施例中，在端盖121的内侧还可以设置有绝缘结构，绝缘结构可以用于隔离壳体11内的电连接部件与端盖121，以降低短路的风险。示例性的，绝缘结构可以是塑料、橡胶等。
电极组件13是电池单体10中发生电化学反应的部件。壳体11内可以包含一个或多个电极组件13。电极组件13主要由正极极片和负极极片卷绕或层叠放置形成，并且通常在正极极片和负极极片之间设有隔离膜，隔离膜用于绝缘隔离正极极片和负极极片。正极极片和负极极片涂覆有活性物质层的部分构成电极组件13的主体131，正极极片和负极极片未涂覆有活性物质层的部分各自构成极耳132。正极极耳和负极极耳可以共同位于主体131的一端或是分别位于主体131的两端。在电池的充放电过程中，正极活性物质和负极活性物质与电解液发生反应，极耳132连接电极端子122以形成电流回路。
本申请实施例中，正极极耳和负极极耳位于主体131的沿电池单体的长度方向的两端，极耳132从主体131沿电池单体的长度方向的端部延伸出。
转接件14是用于连接电极端子122和极耳132的部件，通过转接件14实现电极端子122和极耳132的电连接。
请参见图4，图4为本申请一些实施例提供的电池单体10的剖视图，为了便于描述，图4中省略了壳体；图5为图4的A处局部放大图。根据本申请的一些实施例，本申请提供了一种电池单体10。如图3至图5所示，电池单体10包括壳体11、端盖组件12、电极组件13、转接件14及第一绝缘件15。壳体11具有开口，端盖组件12包括端盖121和电极端子122，端盖121用于覆盖开口，电极组件13设置于端盖121。电极组件13设置于壳体11内，电极组件13包括涂覆有活性物质层的主体131和未涂覆有活性物质层的极耳132，极耳132从主体131沿第一方向X的端部延伸出，端盖组件12位于主体131的第二方向Y的一侧，第一方向X垂直于第二方向Y。转接件14包括用于连接电极端子122的第一连接部141和用于连接极耳132的第二连接部142。第一绝缘件15设置于第一连接部141与主体131之间，第一绝缘件15用于绝缘隔离第一连接部141与主体131。
图中，字母X所指示的方向为第一方向X，第一方向X可以为端盖121的长度方向，也即电池单体10的长度方向；字母Y所指示的方向为第二方向Y，第二方向Y可以为端盖121的厚度方向。
转接件14为实现电极端子122和极耳132电连接的部件，转接件14可以为金属件(例如，铝、铜或者其他导电金属)，具有较好的导电性能。由于极耳132和电极端子122位于电极组件13的两个方向上，第一连接部141和第二连接部142呈夹角设置，为了保证第一连接部141与电极端子122的连接，第一连接部141可以沿第一方向X延伸；为了保证第二连接部142与极耳132的连接，第二连接部142可以沿第二方向Y延伸。第一连接部141和第二连接部142可以折弯形成，使得转接件14呈L字形。
第一连接部141与电极端子122焊接，第一连接部141的面向主体131的表面形成焊印143(请参见图4和图5)。
第一绝缘件15为电绝缘的部件，例如，第一绝缘件15可以为橡胶、塑胶(如PET(Polyethylene terephthalate，聚对苯二甲酸乙二酯)、PP(polypropylene，聚丙烯)等)。
第一绝缘件15设置于第一连接部141与主体131之间，第一绝缘件15可以连接于第一连接部141，或者，第一绝缘件15可以连接于主体131，又或者，第一绝缘件15可以连接于第一连接部141和主体131。
根据本申请实施例的电池单体10，第一绝缘件15设置于第一连接部141与主体131之间，相当于在第一连接部141与主体131之间增加了一层绝缘隔离保护，即使电池单体10因受到振动，或者，在使用过程中电极组件13发生膨胀，导致主体131朝向第一连接部141移动，由于第一绝缘件15位于第一连接部141和主体131之间，第一连接部141与电极端子122连接的焊印143被第一绝缘件15阻挡，降低了焊印143刺穿主体131外层的绝缘结构(如隔离膜)的风险，降低了第一连接部141和主体131短接的概率，提高了电池单体10的安全性。
请参照图6，图6为本申请一些实施例提供的第一绝缘件15的结构示意图。根据本申请的一些实施例，如图3和图6所示，电池单体10还包括：第二绝缘件16，设置于端盖121与第一连接部141之间，第二绝缘件16用于绝缘隔离第一连接部141与端盖121；第一绝缘件15包括第一本体151和设置于第一本体151的第一卡接部152，第一卡接部152卡接于第一连接部141或第二绝缘件16。
第二绝缘件16为用于绝缘隔离第一连接部141与端盖121的部件，第二绝缘件16设置于端盖121与第一连接部141之间，也即，第二绝缘件16设置于端盖121的面向电池单体10内部的一侧。第二绝缘件16的材质可以与第一绝缘件15的材质相同。
在第一卡接部152卡接于第一连接部141的实施例中，第一绝缘件15与第一连接部141装配于一体；在第一卡接部152卡接于第二绝缘件16的实施例中，第一绝缘件15与第二绝缘件16装配于一体。
在上述方案中，将第一绝缘件15卡接于第一连接部141或第二绝缘件16，以便于实现第一绝缘件15的装配固定，并且结构紧凑。
根据本申请的一些实施例，可选地，第一本体151的边缘可以设置有过渡圆角，避免边缘过于锋利而损伤电极组件13，起到保护作用。
根据本申请的一些实施例，如图6所示，第一卡接部152设置于第一本体151的边缘。
第一卡接部152位于第一本体151的边缘，便于加工，便于实现与第一连接部141或第二绝缘件16的装配。
请参照图7和图8，图7为本申请另一些实施例提供的第一绝缘件15的结构示意图，图8为本申请又一些实施例提供的第一绝缘件15的结构示意图。根据本申请的一些实施例，如图7和图8所示，第一本体151包括底壁1511和第一侧壁1512，底壁1511设置于第一连接部141(请参见图3)与主体131之间，第一侧壁1512从底壁1511的边缘向靠近端盖121的方向延伸，第一侧壁1512与底壁1511围成用于容纳第一连接部141的空间，第一卡接部152设置于第一侧壁1512。
底壁1511的厚度方向可以为端盖121的厚度方向，第一侧壁1512从底壁1511的边缘向靠近端盖121的方向延伸，换句话说，沿第二方向Y，第一侧壁1512从底壁1511的边缘朝向端盖121凸出于底壁1511。第一侧壁1512与底壁1511可以一体成型，便于加工，降低制造成本。底壁1511位于第一连接部141与主体131之间，底壁1511可以覆盖于第一连接部141的面向主体131的表面。
第一侧壁1512从底壁1511朝向端盖121凸出，由底壁1511指向端盖121的方向，第一侧壁1512可以延伸至第一连接部141的背离主体131的表面，或者，第一侧壁1512可以超出第 一连接部141的背离主体131的表面，又或者，第一侧壁1512可以未超出第一连接部141的背离主体131的表面，也即，第一侧壁1512的远离底壁1511的端部相对于第一连接部141的背离主体131的表面更靠近主体131。
第一侧壁1512与底壁1511围成用于容纳第一连接部141的空间，第一连接部141容纳于该空间内。第一侧壁1512可以沿底壁1511的边缘延伸，第一侧壁1512可以为连续的结构，第一侧壁1512沿底壁1511的边缘设置一周；第一侧壁1512也可以包括沿底壁1511的边缘间隔设置的多段式结构。
第一卡接部152设置于第一侧壁1512，以便于第一卡接部152与第一连接部141或第二绝缘件16的装配。第一卡接部152可以设置于第一侧壁1512的远离底壁1511的一端。如图7所示，第一卡接部152的形状可以为直线形；或者，如图8所示，第一卡接部152的形状也可以为圆弧形；又或者，第一卡接部152的形状还可以为多边形等。
第一侧壁1512包围第一连接部141，增加第一绝缘件15对第一连接部141的绝缘保护范围，提高绝缘保护效果。
根据本申请的一些实施例，如图6至图8所示，第一卡接部152的数量为多个，多个第一卡接部152沿第一本体151的边缘间隔分布。
多个第一卡接部152沿第一本体151的边缘间隔分布，使得第一绝缘件15与第一连接部141具有多个连接位置，保证第一绝缘件15与第一连接部141的连接牢固性。
可选地，第一卡接部152的数量为两个，两个第一卡接部152设置于第一本体151的沿第三方向Z(请参见图3)的相对的两个边缘，第三方向Z垂直于第一方向X和第二方向Y。
请参照图9至图12，图9为本申请一些实施例提供的转接件14与端盖组件12装配结构的剖视图，图10为图9的B处局部放大图，图11为本申请另一些实施例提供的转接件14与端盖组件12装配结构的剖视图，图12为图11的C处局部放大图。
根据本申请的一些实施例，第一卡接部152卡接于第一连接部141；如图9和图10所示，第一连接部141具有面向端盖121的第一表面1411，第一卡接部152卡接于第一表面1411的边缘；或者，如图11和图12所示，第一连接部141具有面向端盖121的第一表面1411、背离端盖121的第二表面1412以及连接第一表面1411和第二表面1412的外周面1413，外周面1413上设置有台阶1414，第一卡接部152卡接于台阶1414。
在第一卡接部152卡接于第一连接部141的方案中，第一卡接部152可以卡接于第一表面1411的边缘，第一卡接部152与第一表面1411配合；或者，第一卡接部152可以卡接于第一连接部141的外周面1413上的台阶1414，第一卡接部152与外周面1413配合。
在第一卡接部152卡接于第一表面1411的边缘的实施例中，装配简单，便于操作；在第一卡接部152卡接于台阶1414的实施例中，台阶1414的设置，减少了第一卡接部152与第一连接部141装配后的结构在第二方向Y上的空间占用，便于装配。
根据本申请的一些实施例，如图10和图12所示，第二绝缘件16设置有用于避让第一卡接部152的第一缺口161。
第一缺口161为第二绝缘件16上的缺失的部位，第一卡接部152与第一连接部141装配后，第一卡接部152能够在第一缺口161露出。
第一缺口161的设置，避免第一卡接部152与第一连接部141装配时与第二绝缘件16干涉，降低装配难度，提高装配效率，同时，使得结构紧凑。
根据本申请的一些实施例，第一卡接部152卡接于第二绝缘件16，第二绝缘件16设置有用于与第一卡接部152配合的卡槽162，第一卡接部152卡接于卡槽162。
卡槽162的设置，便于实现第一绝缘件15与第二绝缘件16的装配，保证第一绝缘件15与第二绝缘件16的装配稳定性。
请参照图13，图13为本申请一些实施例提供的第二绝缘件16的结构示意图，图14为本申请一些实施例提供的第二绝缘件16与第一绝缘件15装配结构的剖视图，图15为图14的D处局部放大图。根据本申请的一些实施例，如图13至图15所示，第二绝缘件16包括顶壁163和第二侧壁164，顶壁163设置于第一连接部141和端盖121之间，第二侧壁164从顶壁163的边缘向背离端盖121的方向延伸，第二侧壁164与顶壁163围成用于容纳第一连接部141的空间，卡槽162设置于顶壁163与第二侧壁164的连接处。
第二侧壁164从顶壁163的边缘向背离端盖121的方向延伸，也即，第二侧壁164沿第二方向Y由顶壁163朝向电极组件13的方向凸出于顶壁163。
第二侧壁164可以与顶壁163一体成型，便于加工，降低制造成本。
卡槽162设置于顶壁163与第二侧壁164的连接处，卡槽162可以位于第二侧壁164的内侧，或者，卡槽162也可以位于第二侧壁164的外侧。当卡槽162位于第二侧壁164的内侧时，第一卡接部152位于第二侧壁164和顶壁163围成的空间内，第一卡接部152从第二侧壁164的内侧卡扣至卡槽162。当卡槽162位于第二侧壁164的外侧时，第一卡接部152位于第二侧壁164和顶壁163围成的空间外，第一卡接部152从第二侧壁164的外侧卡扣至卡槽162。
卡槽162设置于顶壁163与第二侧壁164的连接处，可以为卡槽162由顶壁163的面向电极组件13的一面沿第二方向Y延伸。
第二侧壁164包围第一连接部141，能够增加对第一连接部141的绝缘效果。
根据本申请的一些实施例，如图15所示，第二侧壁164围绕于第一绝缘件15的外侧。
第二侧壁164围绕于第一绝缘件15的外侧，换句话说，至少部分第一绝缘件15位于第二侧壁164和顶壁163围成的空间内。第一卡接部152从第二侧壁164的内侧朝向外侧伸入卡槽162内。
第二侧壁164包围第一绝缘件15，第一卡接部152朝向第二侧壁164卡接，保证对第一连接部141的绝缘效果，同时，结构紧凑，减少空间占用。
根据本申请的一些实施例，如图13至图15所示，卡槽162贯穿顶壁163与第二侧壁164的连接处。
卡槽162贯穿顶壁163与侧壁的连接处，可以为卡槽162沿侧壁的厚度方向贯穿顶壁163与侧壁的连接处。
在第二侧壁164围绕于第一绝缘件15的外侧的实施例中，第一卡接部152从第二侧壁164的内侧卡接于卡槽162，在卡槽162内第一卡接部152与卡槽162的槽壁可以具有较大的连接面积；同时，可以在第二侧壁164的外侧驱动第一卡接部152退出卡槽162，便于实现第一绝缘件15与第二绝缘件16的拆卸。
卡槽162贯穿顶壁163和第二侧壁164的连接处，以便于增大第一卡接部152与卡槽162的连接面积，提高第一卡接部152与第二绝缘件16的连接稳定性。
请参照图16，图16为本申请一些实施例提供的第二绝缘件16与第一绝缘件15的装配示意图。根据本申请的一些实施例，如图16所示，电池单体10还包括：第二绝缘件16，设置于端盖121与第一连接部141之间，第二绝缘件16用于绝缘隔离第一连接部141与端盖121；第一绝缘件15包括第一本体151和凸部153，第一本体151设置于第一连接部141和主体131之间，第一本体151的一端可转动地连接于第二绝缘件16的一端，第一本体151的另一端为自由端，凸部153形成在第一本体151的面向第一连接部141的一侧，第一连接部141设置有通孔1415，凸部153***通孔1415以使第一绝缘件15固定于第一连接部141。
第二绝缘件16为用于绝缘隔离第一连接部141与端盖121的部件。
在第二绝缘件16包括顶壁163和第二侧壁164的实施例中，第一本体151的一端连接于第二侧壁164的远离顶壁163的一端。
第一本体151的一端可转动地连接于第二绝缘件16的一侧，第一本体151能够相对于第二绝缘件16转动，以使第一本体151覆盖于第一连接部141的面向主体131的一侧。
凸部153***通孔1415以使第一绝缘件15固定于第一连接部141，在凸部153***通孔1415后，凸部153与通孔1415形成限位，限制凸部153离开通孔1415，以实现第一绝缘件15与第一连接部141的固定。
第一绝缘件15相对于第二绝缘件16折弯后与转接件14固定，结构简单，便于装配，提高装配效率。
根据本申请的一些实施例，凸部153与通孔1415卡接或热熔连接。
在凸部153与通孔1415卡接的方案中，凸部153***通孔1415后，凸部153与通孔1415形成限位，凸部153卡接于通孔1415的孔壁，以阻止凸部153脱离通孔1415。例如，凸部153为卡扣，当卡扣进入通孔1415时，卡扣被挤压变形，在卡扣完全进入通孔1415后，卡扣与通孔1415过盈配合，以使卡扣与第一连接部141卡接固定。
在凸部153与通孔1415热熔连接的方案中，凸部153***通孔1415后被热熔，熔融状态的凸部153填充满通孔1415，凸部153凝固后，使得凸部153与通孔1415形成限位。通孔1415可以为阶梯孔，也可以为变径孔，只要凸部153填充通孔1415后，凸部153无法从通孔1415脱离即可。
凸部153与通孔1415卡接或热熔连接，保证第一绝缘件15与转接件14的连接稳定性。
根据本申请的一些实施例，第一绝缘件15与第二绝缘件16一体成型。
第一绝缘件15的第一本体151的一端与第二绝缘件16可转动地连接，在第一绝缘件15与第二绝缘件16一体成型的方案中，可以在第一本体151与第二绝缘件16的连接处设置折痕，以便于引导第一本体151相对于第二绝缘件16折弯，以使第一本体151固定于第一连接部141。
第一绝缘件15与第二绝缘件16一体成型，便于加工，降低制造成本。
根据本申请的一些实施例，第一本体151可以与第一连接部141或第二绝缘件16粘接，在第一本体151相对于第二绝缘件16折弯后，第一本体151覆盖第一连接部141的面向电极组件13的面，第一本体151可以与该面粘接，或者，第一本体151与该面贴合，但与第二绝缘件16粘接。
根据本申请的一些实施例，电池单体10还包括：如图3所示，第三绝缘件17，第三绝缘件17设置于第一绝缘件15和主体131之间，第三绝缘件17粘接于主体131。
第三绝缘件17为用于电绝缘的部件，第三绝缘件17设置于第一绝缘件15和主体131之间，沿第二方向Y，第一绝缘件15、第三绝缘件17及主体131依次排列。
第三绝缘件17粘接于主体131，便于装配，第三绝缘件17与第一绝缘件15同时使用，能够进一步增加第一连接部141与主体131之间的绝缘效果。
根据本申请的一些实施例，如图16所示，第一绝缘件15设置有用于避让第二连接部142(请参见图3)的第二缺口154。
第二缺口154的设置，保证第一绝缘件15与转接件14装配后，结构紧凑，减少空间占用。
根据本申请的一些实施例，第一绝缘件15粘接于主体131。
第一绝缘件15粘接于主体131，结构简单，便于操作。例如，第一绝缘件15可以为绝缘胶带，或者，第一绝缘件15的表面涂覆有胶层。
根据本申请的一些实施例，本申请还提供了一种电池，包括以上任一方案所述的电池单体10。
根据本申请的一些实施例，本申请还提供了一种用电设备，包括以上任一方案所述的电池单体10，并且电池单体10用于为用电设备提供电能。
用电设备可以是前述任一应用电池单体10的设备或***。
根据本申请的一些实施例，参见图3至图16，本申请提供了一种电池单体10，该电池单体10为方壳电池单体，其包括壳体11、端盖组件12、电极组件13、转接件14、第一绝缘件15、第二绝缘件16及第三绝缘件17。壳体11具有开口，端盖组件12包括端盖121和电极端子122，端盖121用于覆盖开口，电极端子122设置于端盖121。电极组件13设置于壳体11内，电极组件13包括涂覆有活性物质层的主体131和未涂覆有活性物质层的极耳132，极耳132从主体131沿第一方向X的端部延伸出，端盖组件12位于主体131沿第二方向Y的一侧，第一方向X垂直于第二方向Y，第二方向Y可以为端盖121的厚度方向。转接件14包括用于连接电极端子122的第一连接部141和用于连接极耳132的第二连接部142。第一绝缘件15设置于第一连接部141与主体131之间，用于绝缘隔离第一连接部141和主体131。第二绝缘件16设置于端盖121与第一连接部141之间，用于绝缘隔离第一连接部141与端盖121。第三绝缘件17设置于第一绝缘件15与主体131之间，第三绝缘件17粘接于主体131。第一绝缘件15包括第一本体151和第一卡接部152，第一本体151包括底壁1511和第一侧壁1512，底壁1511设置于第一连接部141与主体131之间，第一侧壁1512从底壁1511的边缘向靠近端盖121的方向延伸，第一侧壁1512与底壁1511围成用于容纳第一连接部141的空间，第一卡接部152设置于第一侧壁1512。第二绝缘件16包括顶壁163和第二侧壁164，顶壁163设置于第一连接部141和端盖121之间，第二侧壁164从顶壁163的边缘向背离端盖121的方向延伸，第二侧壁164与顶壁163围成用于容纳第一连接部141的空间，顶壁163与第二侧壁164的连接处设置有与第一卡接部152配合的卡槽162，第二侧壁164围绕于第一绝缘件15的外侧。第一卡接部152从第二侧壁164的内侧向外侧延伸并卡接于卡槽162。
根据本申请实施例的电池单体10，能够在第一连接部141与主体131之间形成绝缘隔离，提高第一连接部141与主体131的绝缘效果，降低第一连接部141与主体131短接的概率，提高了电池单体10的安全性。
上文描述了本申请实施例的电池单体10、电池和用电设备，下面将描述本申请实施例的电池单体10的制造方法和制造设备，其中未详细描述的部分可参见前述各实施例。
图17示出了本申请一些实施例提供的电池单体的制造方法400的示意性流程图。如图17所述，电池单体的制造方法400可以包括：
401，提供壳体11，壳体11具有开口；
402，提供端盖组件12，端盖组件12包括端盖121和电极端子122，电极端子122设置于端盖121；
403，提供电极组件13，电极组件13设置于壳体11内，电极组件13包括主体131和从主体131沿第一方向X的端部延伸的极耳132；
404，提供转接件14，转接件14包括第一连接部141和第二连接部142；提供第一绝缘件15；
405，将端盖组件12设置于主体131沿第二方向Y的一侧，第二方向Y与第一方向X垂直；
406，将第一连接部141连接于电极端子122，将第二连接部142连接于极耳132；
407，将第一绝缘件15设置于第一连接部141与主体131之间，以绝缘隔离第一连接部141与主体131；
408，将电极组件13设置于壳体11内，将端盖121覆盖开口。
图18示出了本申请一些实施例提供的电池单体的制造设备500的示意性框图。如图18所示，电池单体的制造设备500可以包括：提供模块501和组装模块502。
提供模块501，用于：提供壳体11、提供端盖组件12、提供电极组件13、提供转接件14及提供第一绝缘件15，壳体11具有开口，端盖组件12包括端盖121和电极端子122，电极端子 122设置于端盖121，电极组件13设置于壳体11内，电极组件13包括涂覆有活性物质层的主体131和未涂覆有活性物质层的极耳132，极耳132从主体131沿第一方向X的端部延伸出，转接件14包括第一连接部141和第二连接部142；
组装模块502，用于将端盖组件12设置于主体131沿第二方向Y的一侧，第二方向Y与第一方向X垂直，将第一连接部141连接于电极端子122，将第二连接部142连接于极耳132，将第一绝缘件15设置于第一连接部141与主体131之间，以绝缘隔离第一连接部141与主体131，将电极组件13设置于壳体11内，将端盖121覆盖开口。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (21)

  1. 一种电池单体，包括：
    壳体，具有开口；
    端盖组件，包括端盖和电极端子，所述端盖用于覆盖所述开口，所述电极端子设置于所述端盖；
    电极组件，设置于所述壳体内，所述电极组件包括涂覆有活性物质层的主体和未涂覆有活性物质层的极耳，所述极耳从所述主体沿第一方向的端部延伸出，所述端盖组件位于所述主体沿第二方向的一侧，所述第一方向垂直于所述第二方向；
    转接件，包括用于连接所述电极端子的第一连接部和用于连接所述极耳的第二连接部；
    第一绝缘件，设置于所述第一连接部与所述主体之间，用于绝缘隔离所述第一连接部与所述主体。
  2. 根据权利要求1所述的电池单体，其中，所述电池单体还包括：
    第二绝缘件，设置于所述端盖与所述第一连接部之间，用于绝缘隔离所述第一连接部与所述端盖；
    所述第一绝缘件包括第一本体和设置于所述第一本体的第一卡接部，所述第一卡接部卡接于所述第一连接部或所述第二绝缘件。
  3. 根据权利要求2所述的电池单体，其中，所述第一卡接部设置于所述第一本体的边缘。
  4. 根据权利要求2或3所述的电池单体，其中，所述第一本体包括底壁和第一侧壁，所述底壁设置于所述第一连接部与所述主体之间，所述第一侧壁从所述底壁的边缘向靠近所述端盖的方向延伸，所述第一侧壁与所述底壁围成用于容纳所述第一连接部的空间，所述第一卡接部设置于所述第一侧壁。
  5. 根据权利要求2-4中任一项所述的电池单体，其中，所述第一卡接部的数量为多个，多个所述第一卡接部沿所述第一本体的边缘间隔分布。
  6. 根据权利要求2-5中任一项所述的电池单体，其中，所述第一卡接部卡接于所述第一连接部；
    所述第一连接部具有面向所述端盖的第一表面，所述第一卡接部卡接于所述第一表面的边缘；
    或者，所述第一连接部具有面向所述端盖的第一表面、背离所述端盖的第二表面以及连接所述第一表面和所述第二表面的外周面，所述外周面上设置有台阶，所述第一卡接部卡接于所述台阶。
  7. 根据权利要求6所述的电池单体，其中，所述第二绝缘件设置有用于避让所述第一卡接部的第一缺口。
  8. 根据权利要求2-5中任一项所述的电池单体，其中，所述第一卡接部卡接于所述第二绝缘件，所述第二绝缘件设置有用于与所述第一卡接部配合的卡槽，所述第一卡接部卡接于所述卡槽。
  9. 根据权利要求8所述的电池单体，其中，所述第二绝缘件包括顶壁和第二侧壁，所述顶壁设置于所述第一连接部和所述端盖之间，所述第二侧壁从所述顶壁的边缘向背离所述端盖的方向延伸，所述第二侧壁与所述顶壁围成用于容纳所述第一连接部的空间，所述卡槽设置于所述顶壁与所述第二侧壁的连接处。
  10. 根据权利要求9所述的电池单体，其中，所述第二侧壁围绕于所述第一绝缘件的外侧。
  11. 根据权利要求9或10所述的电池单体，其中，所述卡槽贯穿所述顶壁与所述第二侧壁的连接处。
  12. 根据权利要求1所述的电池单体，其中，所述电池单体还包括：
    第二绝缘件，设置于所述端盖与所述第一连接部之间，用于绝缘隔离所述第一连接部与所述端盖；
    所述第一绝缘件包括第一本体和凸部，所述第一本体设置于所述第一连接部和所述主体之间， 所述第一本体的一端可转动地连接于所述第二绝缘件的一端，所述第一本体的另一端为自由端，所述凸部形成在所述第一本体的面向所述第一连接部的一侧，所述第一连接部设置有通孔，所述凸部***所述通孔以使所述第一绝缘件固定于所述第一连接部。
  13. 根据权利要求12所述的电池单体，其中，所述凸部与所述通孔卡接或热熔连接。
  14. 根据权利要求12或13所述的电池单体，其中，所述第一绝缘件与所述第二绝缘件一体成型。
  15. 根据权利要求1-14中任一项所述的电池单体，其中，所述电池单体还包括：
    第三绝缘件，所述第三绝缘件设置于所述第一绝缘件和所述主体之间，所述第三绝缘件粘接于所述主体。
  16. 根据权利要求1-15中任一项所述的电池单体，其中，所述第一绝缘件设置有用于避让所述第二连接部的第二缺口。
  17. 根据权利要求1所述的电池单体，其中，所述第一绝缘件粘接于所述主体。
  18. 一种电池，包括如权利要求1-17中任一项所述的电池单体。
  19. 一种用电设备，包括如权利要求1-17中任一项所述的电池单体。
  20. 一种电池单体的制造方法，包括：
    提供壳体，所述壳体具有开口；
    提供端盖组件，所述端盖组件包括端盖和电极端子，所述电极端子设置于所述端盖；
    提供电极组件，所述电极组件设置于所述壳体内，所述电极组件包括涂覆有活性物质层的主体和未涂覆有活性物质层的极耳，所述极耳从所述主体沿第一方向的端部延伸出；
    提供转接件，所述转接件包括第一连接部和第二连接部；
    提供第一绝缘件；
    将所述端盖组件设置于所述主体沿第二方向的一侧，所述第二方向与所述第一方向垂直；
    将所述第一连接部连接于所述电极端子，将所述第二连接部连接于所述极耳；
    将所述第一绝缘件设置于所述第一连接部与所述主体之间，以绝缘隔离所述第一连接部与所述主体；
    将所述电极组件设置于所述壳体内，将所述端盖覆盖所述开口。
  21. 一种电池单体的制造设备，包括：
    提供模块，用于提供壳体、提供端盖组件、提供电极组件、提供转接件及提供第一绝缘件，所述壳体具有开口，所述端盖组件包括端盖和电极端子，所述电极端子设置于所述端盖，所述电极组件设置于所述壳体内，所述电极组件包括涂覆有活性物质层的主体和未涂覆有活性物质层的极耳，所述极耳从所述主体沿第一方向的端部延伸出，所述转接件包括第一连接部和第二连接部；
    组装模块，用于将所述端盖组件设置于所述主体沿第二方向的一侧，所述第二方向与所述第一方向垂直，将所述第一连接部连接于所述电极端子，将所述第二连接部连接于所述极耳，将所述第一绝缘件设置于所述第一连接部与所述主体之间，以绝缘隔离所述第一连接部与所述主体，将所述电极组件设置于所述壳体内，将所述端盖覆盖所述开口。
PCT/CN2022/075063 2022-01-29 2022-01-29 电池单体、电池、用电设备、电池单体的制造方法及设备 WO2023142064A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003157902A (ja) * 2001-11-20 2003-05-30 Matsushita Electric Ind Co Ltd 扁平形電池
CN111029489A (zh) * 2019-08-14 2020-04-17 宁德时代新能源科技股份有限公司 二次电池
CN211350863U (zh) * 2019-12-24 2020-08-25 惠州亿纬锂能股份有限公司 豆式电池

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003157902A (ja) * 2001-11-20 2003-05-30 Matsushita Electric Ind Co Ltd 扁平形電池
CN111029489A (zh) * 2019-08-14 2020-04-17 宁德时代新能源科技股份有限公司 二次电池
CN211350863U (zh) * 2019-12-24 2020-08-25 惠州亿纬锂能股份有限公司 豆式电池

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