WO2023240897A1 - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
WO2023240897A1
WO2023240897A1 PCT/CN2022/129127 CN2022129127W WO2023240897A1 WO 2023240897 A1 WO2023240897 A1 WO 2023240897A1 CN 2022129127 W CN2022129127 W CN 2022129127W WO 2023240897 A1 WO2023240897 A1 WO 2023240897A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid cooling
plate
battery pack
battery
pack according
Prior art date
Application number
PCT/CN2022/129127
Other languages
French (fr)
Chinese (zh)
Inventor
刘攀
黄伟
刘华俊
Original Assignee
湖北亿纬动力有限公司
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 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2023240897A1 publication Critical patent/WO2023240897A1/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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • 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
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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, for example, to a battery pack.
  • the liquid cooling plate is arranged on the side of the battery module, and the flow channel is arranged toward the battery core. Because the uneven surface of the flow channel affects the verticality of the battery core, tilting the position of the battery core may easily lead to dangers such as battery core contact short circuit.
  • This application provides a battery pack that has good thermal conductivity, and the liquid cooling plate arrangement will not affect the verticality of the battery core, effectively avoiding short circuit problems caused by contact of the battery core.
  • An embodiment of the present application provides a battery pack, which includes:
  • each battery module including a plurality of vertically arranged battery cells
  • the liquid cooling plate includes a liquid cooling top plate and a liquid cooling bottom plate, the liquid cooling top plate is provided with a flow channel, the liquid cooling bottom plate has a first end face and a second end face, the liquid cooling top plate is connected to The first end face and the second end face are arranged toward the battery module, and the liquid cooling bottom plate is arranged perpendicularly to each of the battery cells.
  • a thermally conductive adhesive is provided between the liquid cooling plate and the battery module, and the thermally conductive adhesive is attached to the second end surface.
  • the liquid cooling bottom plate has an installation groove, the liquid cooling top plate is disposed in the installation groove, and the outer bottom surface of the installation groove forms the second end surface.
  • the battery pack further includes a top shield, the top shield is disposed above the liquid-cooling top plate, and the top shield is sealingly connected to the liquid-cooling plate.
  • the top protective plate has an upwardly protruding cavity, and the cavity is disposed directly facing the liquid-cooled top plate.
  • thermal insulation foam is provided between the top guard plate and the liquid cooling top plate.
  • an anti-stone chip coating is provided on the outside of the top guard plate.
  • the battery module includes a bracket, the bracket is provided with a plurality of positioning slots, and the bottom of the battery core is fixed in the positioning slots.
  • the battery module further includes a tray, the tray is provided with a plurality of pressure relief holes, the bottom of the positioning groove is provided with through holes, the bottom of the bracket is provided with a support portion, the The support part is arranged in contact with the tray, and the through hole is connected with the pressure relief hole.
  • the support part is an annular rib, a first end of the annular rib is connected to the through hole, and a second end of the annular rib is connected to the pressure relief hole.
  • the battery pack further includes a box body, and the liquid cooling plate is sealingly connected to the box body.
  • a baffle is provided inside the box, and the baffle divides the inside of the box into a plurality of compartments, and the battery module is disposed in the compartments.
  • the battery pack with a liquid-cooling plate provided by this application cools down the interior of the battery pack by providing a liquid-cooling plate, thereby preventing the cell temperature from being too high.
  • the liquid cooling plate in the battery pack includes a liquid cooling bottom plate and a liquid cooling top plate. A flow channel is arranged on the liquid cooling top plate.
  • the liquid cooling bottom plate has a first end face and a second end face.
  • the liquid cooling top plate is connected to the first end of the liquid cooling bottom plate.
  • the end face so that one side of the entire liquid cooling plate has a rugged end face, and the other side has a flat end face. Set the flat second end face toward the battery module, and since the battery core is arranged vertically, the end face of the liquid cooling plate is vertically arranged with the battery core. Therefore, the liquid cooling plate will not affect the verticality of the battery core, ensuring that the battery The core position does not shift, ensuring the safety performance of the battery.
  • Figure 1 is an exploded view of the liquid cooling plate provided by the embodiment of the present application.
  • Figure 2 is a schematic structural diagram of a liquid cooling plate provided by an embodiment of the present application.
  • FIG. 3 is an exploded view of the battery pack provided by the embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a bracket provided by an embodiment of the present application.
  • Figure 5 is a second structural schematic diagram of a bracket provided by an embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a tray provided by an embodiment of the present application.
  • Battery module 100. Battery module; 10. Cell; 110. Bracket; 111. Positioning slot; 112. Support part; 113. Through hole; 120. Tray; 121. Pressure relief hole; 130. Bus bar; 200. Liquid cooling plate ; 210. Liquid cooling bottom plate; 220. Liquid cooling top plate; 221. Flow channel; 300. Top guard; 400. Insulation foam; 500. Box; 510. Baffle.
  • first position and second position are two different positions, and the first feature “on”, “above” and “above” the second feature include the first feature on the second feature. Directly above and diagonally above, or simply means that the level of the first feature is higher than that of the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • connection should be understood in a broad sense.
  • connection or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
  • the battery pack includes at least one battery module 100 and a liquid cooling plate 200 .
  • Each battery module 100 includes a plurality of vertically arranged battery cells 10 .
  • the liquid cooling plate 200 includes a liquid cooling top plate 220 and a liquid cooling bottom plate 210.
  • the liquid cooling top plate 220 is provided with a flow channel 221.
  • the liquid cooling bottom plate 210 has a first end surface and a second end surface.
  • the liquid cooling top plate 220 is connected to the first end surface, and The second end face is disposed toward the battery module 100 .
  • the above-mentioned battery pack with the liquid cooling plate 200 is provided with the liquid cooling plate 200 to cool down the interior of the battery pack, thereby preventing the temperature of the battery core 10 from being too high.
  • the liquid cooling plate 200 in the battery pack includes a liquid cooling bottom plate 210 and a liquid cooling top plate 220 provided with flow channels 221.
  • the liquid cooling bottom plate 210 has a first end surface and a second end surface, and the liquid cooling top plate 220 and the first end surface are connected. , so that one side of the entire liquid cooling plate 200 has an uneven end face, and the other side has a flat end face, and the flat second end face is arranged toward the battery module 100.
  • the battery core 10 Since the battery core 10 is arranged vertically, the end face of the liquid cooling plate 200 It is arranged perpendicularly to the battery core 10. Therefore, the thermal conductive glue will not affect the verticality of the battery core 10, ensuring that the position of the battery core 10 does not shift and ensuring the safety performance of the battery.
  • the axial heat conduction of the battery core 10 The coefficient is more than ten times that of the radial direction.
  • the vertical arrangement of the liquid cooling plate 200 and the battery core 10 can take full advantage of the high axial thermal conductivity of the battery core 10 .
  • the liquid cooling top plate 220 is formed by a stamping process, and the raised portions of the liquid cooling top plate 220 form flow channels 221 .
  • the flow channels 221 on the liquid cooling top plate 220 form four relatively dense partitions.
  • the liquid cooling base plate 210 is provided with a coolant inlet and a coolant outlet. The coolant can enter the flow channel 221 through the coolant, flow through the entire flow channel 221, and then flow out from the coolant outlet, thereby protecting all battery modules of the battery pack. 100 for cooling.
  • the flow channel 221 may be meander-shaped, S-shaped or other shapes.
  • the liquid cooling top plate 220 is surrounded by flat edges for connection with the liquid cooling bottom plate 210 .
  • the liquid-cooling top plate 220 and the liquid-cooling bottom plate 210 can be welded by brazing. Of course, in other embodiments, other connection methods can also be used.
  • a thinned area is provided on the liquid-cooled top plate 220 or the liquid-cooled bottom plate 210. When thermal runaway occurs, the thinned area is destroyed, so that the cooling liquid flows out of the liquid-cooled plate 200, which can more directly control the electricity.
  • the core 10 is cooled to prevent heat spread and reduce the risk of battery pack fire or explosion.
  • the liquid cooling plate 200 is disposed on the top of the battery cell 10, which can replace the top cover of the battery pack and save the cost of the battery pack.
  • a thermally conductive adhesive is provided between the liquid cooling plate 200 and the battery module 100, and the thermally conductive adhesive is attached to the second end surface. Since the thermally conductive adhesive is in direct contact with the relatively flat second end surface of the liquid cooling plate 200, the thermally conductive adhesive can be evenly applied between the battery module 100 and the liquid cooling plate 200, enabling uniform heat transfer and good thermal conductivity. performance.
  • the liquid-cooling bottom plate 210 has an installation groove, and the liquid-cooling top plate 220 is disposed in the installation groove.
  • the installation slot can limit the position of the liquid-cooling top plate 220, facilitate the assembly of the liquid-cooling top plate 220 and the liquid-cooling bottom plate 210, and prevent the liquid-cooling top plate 220 from positional deviation on the liquid-cooling bottom plate 210.
  • the outer periphery of the notch of the mounting groove has a flat edge for connection and assembly with adjacent components.
  • the outer bottom surface of the mounting groove forms a second end surface, which is in direct contact with the thermally conductive adhesive.
  • An insulating layer is provided on the side of the liquid cooling plate 200 facing the battery module 100. The insulating layer is formed by spraying an insulating material. During the spraying process, the thickness and thermal conductivity of the insulating layer are controlled to reduce thermal resistance.
  • the battery pack further includes a top shield 300 , which is disposed above the liquid cooling top plate 220 , and the top shield 300 and the liquid cooling plate 200 are sealingly connected.
  • the connection method may be welding or screw connection.
  • a positioning hole can be provided on one of the top shield 300 and the liquid cooling plate 200, and a positioning post can be provided on the other to position the two to facilitate assembly.
  • the arrangement of the top guard 300 can protect the liquid cooling plate 200 from being directly eroded by air, rain, etc., thereby improving the safety performance of the battery pack and extending the service life of the battery pack.
  • the top plate has an upwardly protruding cavity, and the cavity is disposed facing the liquid cooling top plate 220 .
  • the arrangement of the cavity leaves a certain gap between the top guard plate 300 and the flow channel 221, which can provide a good thermal insulation effect.
  • the vertical distance between the top of the cavity and the flow channel 221 can be 0.5 millimeters (mm), 1 mm or 1.5 mm, etc., which can be set according to the actual situation.
  • an anti-stone chip coating may be provided on the outside of the top protection plate 300 to provide stone chip resistance, corrosion resistance, and thermal insulation.
  • thermal insulation foam 400 is disposed between the top protective plate 300 and the liquid cooling top plate 220 .
  • multiple thermal insulation foams 400 are provided, the thermal insulation foams 400 are in a strip shape, and the multiple thermal insulation foams 400 are arranged at intervals.
  • the thermal insulation foam 400 can be fixed on the liquid cooling top plate 220 by bonding.
  • the arrangement of the thermal insulation foam 400 can avoid vibration and flapping between the top protection plate 300 and the liquid cooling plate 200, thereby reducing costs without reducing the thermal insulation effect.
  • the battery module 100 also includes a bus bar 130 .
  • the bus bar 130 is disposed on the top of the battery cell 10 , and thermally conductive glue is coated between the bus bar 130 and the liquid cooling plate 200 .
  • the bus bar 130 electrically connects multiple battery cells 10. During high-rate charging and discharging processes, the heat generated by the bus bar 130 can be quickly taken away, thereby increasing the overcurrent capacity of the bus bar 130.
  • the battery module 100 includes a bracket 110 .
  • the bracket 110 is provided with a plurality of positioning slots 111 , and the bottom of the battery core 10 is placed in the positioning slots 111 .
  • the positioning groove 111 is a cylindrical groove. The depth and diameter of the groove can be set according to the size of the battery core 10 to ensure that the battery core 10 can be placed in the positioning position. It is in the groove 111 and plays a role in positioning the battery core 10 to prevent the battery core 10 from tilting.
  • the battery module 100 further includes a tray 120 .
  • the tray 120 is provided with a plurality of pressure relief holes 121 , a through hole 113 is provided at the bottom of the positioning groove 111 , and a support is provided at the bottom of the bracket 110 .
  • the support part 112 is in contact with the tray 120 , and the through hole 113 is connected with the pressure relief hole 121 .
  • the arrangement of the pressure relief hole 121 and the through hole 113 can quickly lead the heat of the battery core 10 or the gas generated when the battery core 10 is thermally out of control, from the bottom of the battery core 10, enhance the heat dissipation effect, and increase the safety performance of the overall battery structure.
  • the tray 120 has a metal structure, and the bracket 110 is made of plastic or other insulating materials, so that the bracket 110 can insulate the battery core 10 and the tray 120 .
  • the support part 112 is an annular rib, the first end of the annular rib is connected to the through hole 113 , and the second end of the annular rib is connected to the pressure relief hole 121 .
  • the pressure relief hole 121, the through hole 113 and the ring rib are arranged concentrically.
  • One function of the ring rib is to quickly discharge the high-temperature gas generated by the thermal runaway of the battery core 10. When a battery core 10 undergoes thermal runaway, the high-temperature gas generated by the battery core 10 can pass through the through hole 113 at the bottom of the battery core 10 along the ring rib.
  • the ring rib is to support the bracket 110 on the tray 120.
  • a ring rib is provided on the periphery of each through hole 113, so that the bracket 110 can be placed on the tray 120 in a balanced and stable manner.
  • the support portion 112 may also be a block structure or an arc-shaped rib provided at the bottom of the bracket 110 .
  • the battery pack further includes a case 500, and the liquid cooling plate 200 and the case 500 are sealedly connected.
  • the connection between the liquid cooling plate 200 and the box 500 can be welded or screwed.
  • a baffle 510 is provided inside the box 500.
  • the baffle 510 can divide the inside of the box 500 into multiple compartments.
  • the battery module 100 is arranged in the compartments, and the tray 120 is provided with flanges. The flange is set up on the baffle 510.
  • the baffle 510 divides the interior of the box 500 into four compartments, and one battery module 100 is placed in each compartment.
  • the number of battery modules 100 can be one, two, or three, etc., which can be set according to usage requirements.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

Disclosed in the present application is a battery pack. The battery pack comprises a liquid cooling plate and at least one battery module. Each battery module comprises a plurality of vertically arranged battery cells. The liquid cooling plate comprises a liquid cooling top plate and a liquid cooling bottom plate, wherein a flow channel is provided in the liquid cooling top plate; the liquid cooling bottom plate has a first end face and a second end face; the liquid cooling top plate is connected to the first end face; the second end face of the liquid cooling bottom plate is arranged facing the battery module; and the liquid cooling bottom plate is arranged perpendicular to each battery cell. The battery pack has a good heat conduction performance, and the arrangement of the liquid cooling plate has no influence on the perpendicularity of the battery cells, thereby effectively avoiding the problem of short circuiting of the battery cells due to contact.

Description

电池包battery pack
本公开要求在2022年6月17日提交中国专利局、申请号为202221525000.X的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。This disclosure claims priority from Chinese patent application No. 202221525000.X filed with the China Patent Office on June 17, 2022, the entire content of which is incorporated into this application by reference.
技术领域Technical field
本申请涉及电池技术领域，例如涉及一种电池包。The present application relates to the field of battery technology, for example, to a battery pack.
背景技术Background technique
随着动力电池的发展，动力电池逐渐成为电动汽车的动力来源。温度对于动力电池的性能和寿命影响很大。电动汽车在加速、匀速及减速等不同工况下运行时，电池以不同的倍率进行放电。与此同时，电池包内的热量不断聚集，若产生的热量不能及时被带出电池包，过热的温度会危及电池的寿命甚至是整车的安全。因此，通常需要动力电池热管理***对动力电池进行散热处理。液冷板是热管理***中的关键部件。对液冷板的结构及布置进行合理的设置对于动力电池的循环寿命以及电动汽车的安全有着重要意义。With the development of power batteries, power batteries have gradually become the power source of electric vehicles. Temperature has a great impact on the performance and life of power batteries. When an electric vehicle runs under different operating conditions such as acceleration, constant speed, and deceleration, the battery discharges at different rates. At the same time, the heat in the battery pack continues to accumulate. If the generated heat cannot be taken out of the battery pack in time, the overheating temperature will endanger the life of the battery and even the safety of the entire vehicle. Therefore, a power battery thermal management system is usually required to dissipate heat from the power battery. Liquid cooling plates are key components in thermal management systems. Reasonable setting of the structure and layout of the liquid cooling plate is of great significance to the cycle life of the power battery and the safety of electric vehicles.
相关技术中的液冷板设置在电池模组的侧面，流道朝向电芯设置。由于流道表面凹凸部不平，影响电芯的垂直度，电芯位置发生倾斜容易造成电芯接触短路等危险发生。In the related art, the liquid cooling plate is arranged on the side of the battery module, and the flow channel is arranged toward the battery core. Because the uneven surface of the flow channel affects the verticality of the battery core, tilting the position of the battery core may easily lead to dangers such as battery core contact short circuit.
发明内容Contents of the invention
本申请提供了一种电池包，该电池包具有良好的导热性能，并且液冷板设置不会对电芯的垂直度造成影响，有效避免电芯因接触而造成的短路问题。This application provides a battery pack that has good thermal conductivity, and the liquid cooling plate arrangement will not affect the verticality of the battery core, effectively avoiding short circuit problems caused by contact of the battery core.
本申请实施例提供了一种电池包，所述电池包包括：An embodiment of the present application provides a battery pack, which includes:
至少一个电池模组，每个所述电池模组包括多个竖直设置的电芯；At least one battery module, each battery module including a plurality of vertically arranged battery cells;
液冷板，所述液冷板包括液冷顶板和液冷底板，所述液冷顶板上设置有流道，所述液冷底板具有第一端面和第二端面，所述液冷顶板连接于所述第一端面，所述第二端面朝向所述电池模组设置，且所述液冷底板与每个所述电芯垂直设置。Liquid cooling plate, the liquid cooling plate includes a liquid cooling top plate and a liquid cooling bottom plate, the liquid cooling top plate is provided with a flow channel, the liquid cooling bottom plate has a first end face and a second end face, the liquid cooling top plate is connected to The first end face and the second end face are arranged toward the battery module, and the liquid cooling bottom plate is arranged perpendicularly to each of the battery cells.
在一实施例中，所述液冷板与所述电池模组之间设置有导热胶，所述导热胶和所述第二端面贴合设置。In one embodiment, a thermally conductive adhesive is provided between the liquid cooling plate and the battery module, and the thermally conductive adhesive is attached to the second end surface.
在一实施例中，所述液冷底板具有安装槽，所述液冷顶板设置在所述安装槽内，所述安装槽的外底面形成所述第二端面。In one embodiment, the liquid cooling bottom plate has an installation groove, the liquid cooling top plate is disposed in the installation groove, and the outer bottom surface of the installation groove forms the second end surface.
在一实施例中，所述电池包还包括顶护板，所述顶护板设置在所述液冷顶板的上方，所述顶护板与所述液冷板密封连接。In one embodiment, the battery pack further includes a top shield, the top shield is disposed above the liquid-cooling top plate, and the top shield is sealingly connected to the liquid-cooling plate.
在一实施例中，所述顶护板具有向上凸出的腔体，所述腔体正对所述液冷顶板设置。In one embodiment, the top protective plate has an upwardly protruding cavity, and the cavity is disposed directly facing the liquid-cooled top plate.
在一实施例中，所述顶护板与所述液冷顶板之间设置有保温泡棉。In one embodiment, thermal insulation foam is provided between the top guard plate and the liquid cooling top plate.
在一实施例中，所述顶护板的外侧设置有抗石击涂层。In one embodiment, an anti-stone chip coating is provided on the outside of the top guard plate.
在一实施例中，所述电池模组包括支架，所述支架上设置有多个定位槽，所述电芯的底部固定于所述定位槽中。In one embodiment, the battery module includes a bracket, the bracket is provided with a plurality of positioning slots, and the bottom of the battery core is fixed in the positioning slots.
在一实施例中，所述电池模组还包括托盘，所述托盘上设置有多个泄压孔，所述定位槽的底部开设有通孔，所述支架的底部设置有支撑部，所述支撑部与所述托盘接触设置，所述通孔与所述泄压孔连通。In one embodiment, the battery module further includes a tray, the tray is provided with a plurality of pressure relief holes, the bottom of the positioning groove is provided with through holes, the bottom of the bracket is provided with a support portion, the The support part is arranged in contact with the tray, and the through hole is connected with the pressure relief hole.
在一实施例中，所述支撑部为环肋，所述环肋的第一端与所述通孔连通，所述环肋的第二端与所述泄压孔连通。In one embodiment, the support part is an annular rib, a first end of the annular rib is connected to the through hole, and a second end of the annular rib is connected to the pressure relief hole.
在一实施例中，所述电池包还包括箱体，所述液冷板与所述箱体密封连接。In one embodiment, the battery pack further includes a box body, and the liquid cooling plate is sealingly connected to the box body.
在一实施例中，所述箱体的内部设置有挡板，所述挡板将所述箱体的内部分成多个隔仓，所述电池模组设置在所述隔仓内。In one embodiment, a baffle is provided inside the box, and the baffle divides the inside of the box into a plurality of compartments, and the battery module is disposed in the compartments.
本申请的有益效果：Beneficial effects of this application:
本申请提供的具有液冷板的电池包，通过设置液冷板对电池包的内部进行降温，从而防止电芯温度过高。该电池包中的液冷板包括液冷底板和液冷顶板，液冷顶板上布置有流道，液冷底板具有第一端面和第二端面，将液冷顶板连接在液冷底板的第一端面，从而整个液冷板的一面为凹凸不平的端面，另一面为平坦的端面。将平坦的第二端面朝向电池模组设置，又由于电芯竖直设置，液冷板的端面和电芯垂直设置，因此，液冷板不会对电芯的垂直度造成影响，保证了电芯位置不发生偏移，确保了电池的安全性能。The battery pack with a liquid-cooling plate provided by this application cools down the interior of the battery pack by providing a liquid-cooling plate, thereby preventing the cell temperature from being too high. The liquid cooling plate in the battery pack includes a liquid cooling bottom plate and a liquid cooling top plate. A flow channel is arranged on the liquid cooling top plate. The liquid cooling bottom plate has a first end face and a second end face. The liquid cooling top plate is connected to the first end of the liquid cooling bottom plate. The end face, so that one side of the entire liquid cooling plate has a rugged end face, and the other side has a flat end face. Set the flat second end face toward the battery module, and since the battery core is arranged vertically, the end face of the liquid cooling plate is vertically arranged with the battery core. Therefore, the liquid cooling plate will not affect the verticality of the battery core, ensuring that the battery The core position does not shift, ensuring the safety performance of the battery.
附图说明Description of the drawings
图1是本申请实施例提供的液冷板的***图；Figure 1 is an exploded view of the liquid cooling plate provided by the embodiment of the present application;
图2是本申请实施例提供的液冷板的结构示意图；Figure 2 is a schematic structural diagram of a liquid cooling plate provided by an embodiment of the present application;
图3是本申请实施例提供的电池包的***图；Figure 3 is an exploded view of the battery pack provided by the embodiment of the present application;
图4是本申请实施例提供的支架的结构示意图一；Figure 4 is a schematic structural diagram of a bracket provided by an embodiment of the present application;
图5是本申请实施例提供的支架的结构示意图二；Figure 5 is a second structural schematic diagram of a bracket provided by an embodiment of the present application;
图6是本申请实施例提供的托盘的结构示意图。Figure 6 is a schematic structural diagram of a tray provided by an embodiment of the present application.
图中：In the picture:
100、电池模组；10、电芯；110、支架；111、定位槽；112、支撑部；113、通孔；120、托盘；121、泄压孔；130、汇流排；200、液冷板；210、液冷底板；220、液冷顶板；221、流道；300、顶护板；400、保温泡棉；500、箱体；510、挡板。100. Battery module; 10. Cell; 110. Bracket; 111. Positioning slot; 112. Support part; 113. Through hole; 120. Tray; 121. Pressure relief hole; 130. Bus bar; 200. Liquid cooling plate ; 210. Liquid cooling bottom plate; 220. Liquid cooling top plate; 221. Flow channel; 300. Top guard; 400. Insulation foam; 500. Box; 510. Baffle.
具体实施方式Detailed ways
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”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。此外，术语“第一”、“第二”、仅用于描述目的，而不能理解为指示或暗示相对重要性。其中，术语“第一位置”和“第二位置”为两个不同的位置，而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. Construction and operation. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein, the terms "first position" and "second position" are two different positions, and the first feature "on", "above" and "above" the second feature include the first feature on the second feature. Directly above and diagonally above, or simply means that the level of the first feature is higher than that of the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
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”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。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本申请中的含义。In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the meanings of the above terms in this application can be understood according to the circumstances.
下面描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请。Embodiments of the present application are described below, examples of which are illustrated in the drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application.
参见图1至图3，本实施例提供一种电池包(例如：一种具有液冷板的电池包)，该电池包包括至少一个电池模组100和液冷板200。每个电池模组100包括多个竖直设置的电芯10。液冷板200包括液冷顶板220和液冷底板210，液冷顶板220上设置有流道221，液冷底板210具有第一端面和第二端面，液冷顶板220连接于第一端面，且第二端面朝向电池模组100设置。Referring to FIGS. 1 to 3 , this embodiment provides a battery pack (for example, a battery pack with a liquid cooling plate). The battery pack includes at least one battery module 100 and a liquid cooling plate 200 . Each battery module 100 includes a plurality of vertically arranged battery cells 10 . The liquid cooling plate 200 includes a liquid cooling top plate 220 and a liquid cooling bottom plate 210. The liquid cooling top plate 220 is provided with a flow channel 221. The liquid cooling bottom plate 210 has a first end surface and a second end surface. The liquid cooling top plate 220 is connected to the first end surface, and The second end face is disposed toward the battery module 100 .
上述具有液冷板200的电池包通过设置液冷板200对电池包的内部进行降温，从而防止电芯10的温度过高。该电池包中的液冷板200包括液冷底板210和设置有流道221的液冷顶板220，液冷底板210具有第一端面和第二端面，将液冷顶板220和第一端面进行连接，从而整个液冷板200的一面为凹凸不平的端面，另一面为平坦的端面，将平坦的第二端面朝向电池模组100设置，又由于电芯10竖直设置，液冷板200的端面和电芯10垂直设置，因此，导热胶不会对电芯10的垂直度造成影响，保证了电芯10位置不发生偏移，确保了电池的安全性能，另外，电芯10的轴向导热系数是径向的十倍以上，液冷板200和电芯10垂直设置可以充分利用电芯10轴向导热系数高的优势。The above-mentioned battery pack with the liquid cooling plate 200 is provided with the liquid cooling plate 200 to cool down the interior of the battery pack, thereby preventing the temperature of the battery core 10 from being too high. The liquid cooling plate 200 in the battery pack includes a liquid cooling bottom plate 210 and a liquid cooling top plate 220 provided with flow channels 221. The liquid cooling bottom plate 210 has a first end surface and a second end surface, and the liquid cooling top plate 220 and the first end surface are connected. , so that one side of the entire liquid cooling plate 200 has an uneven end face, and the other side has a flat end face, and the flat second end face is arranged toward the battery module 100. Since the battery core 10 is arranged vertically, the end face of the liquid cooling plate 200 It is arranged perpendicularly to the battery core 10. Therefore, the thermal conductive glue will not affect the verticality of the battery core 10, ensuring that the position of the battery core 10 does not shift and ensuring the safety performance of the battery. In addition, the axial heat conduction of the battery core 10 The coefficient is more than ten times that of the radial direction. The vertical arrangement of the liquid cooling plate 200 and the battery core 10 can take full advantage of the high axial thermal conductivity of the battery core 10 .
继续参见图1和图2，本实施例中，液冷顶板220采用冲压工艺成型，液冷顶板220上凸起的部分形成流道221。参见图3，由于本实施例中布置有四个电池模组100，因此，该液冷顶板220上的流道221形成了四个较为密集的分区。液冷底板210上设置有冷却液入口和冷却液出口，冷却液能够经冷却液进入流道221，流经整个流道221后，再从冷却液出口流出，从而对电池包的所有电池模组100进行冷却。流道221可以呈回纹形或S型或其他形状。液冷顶板220的四周为平整的边缘，用于和液冷底板210进行连接。示例性地，可以采用钎焊的方式对液冷顶板220和液冷底板210进行焊接，当然，在其他实施例中，也可以采用其他连接方式。示例性地，在液冷顶板220或液冷底板210上设置厚度减薄区，发生热失控时，减薄区遭到破坏，从而冷却液从液冷板200中流出，可以较为直接地对电芯10进行冷却，防止热蔓延的发生，降低电池包失火或***的风险。示例性地，液冷板200设置在电芯10的顶部，能够替代电池包的顶盖板，节约电池包成本。Continuing to refer to FIGS. 1 and 2 , in this embodiment, the liquid cooling top plate 220 is formed by a stamping process, and the raised portions of the liquid cooling top plate 220 form flow channels 221 . Referring to FIG. 3 , since four battery modules 100 are arranged in this embodiment, the flow channels 221 on the liquid cooling top plate 220 form four relatively dense partitions. The liquid cooling base plate 210 is provided with a coolant inlet and a coolant outlet. The coolant can enter the flow channel 221 through the coolant, flow through the entire flow channel 221, and then flow out from the coolant outlet, thereby protecting all battery modules of the battery pack. 100 for cooling. The flow channel 221 may be meander-shaped, S-shaped or other shapes. The liquid cooling top plate 220 is surrounded by flat edges for connection with the liquid cooling bottom plate 210 . For example, the liquid-cooling top plate 220 and the liquid-cooling bottom plate 210 can be welded by brazing. Of course, in other embodiments, other connection methods can also be used. For example, a thinned area is provided on the liquid-cooled top plate 220 or the liquid-cooled bottom plate 210. When thermal runaway occurs, the thinned area is destroyed, so that the cooling liquid flows out of the liquid-cooled plate 200, which can more directly control the electricity. The core 10 is cooled to prevent heat spread and reduce the risk of battery pack fire or explosion. For example, the liquid cooling plate 200 is disposed on the top of the battery cell 10, which can replace the top cover of the battery pack and save the cost of the battery pack.
在一实施例中，液冷板200与电池模组100之间设置有导热胶，导热胶和第二端面贴合设置。由于和导热胶直接接触的是液冷板200上较为平坦的第二端面，所以导热胶能够均匀地涂敷于电池模组100和液冷板200之间，能够均匀传热，具有良好的导热性能。In one embodiment, a thermally conductive adhesive is provided between the liquid cooling plate 200 and the battery module 100, and the thermally conductive adhesive is attached to the second end surface. Since the thermally conductive adhesive is in direct contact with the relatively flat second end surface of the liquid cooling plate 200, the thermally conductive adhesive can be evenly applied between the battery module 100 and the liquid cooling plate 200, enabling uniform heat transfer and good thermal conductivity. performance.
示例性地，液冷底板210具有安装槽，液冷顶板220设置在安装槽内。安装槽的设置能够对液冷顶板220进行限位，方便液冷顶板220和液冷底板210的装配，防止液冷顶板220在液冷底板210上发生位置偏移。安装槽的槽口外周具有平整的边沿，用于和相邻的部件进行连接装配。在一实施例中，安装槽的外底面形成第二端面，直接和导热胶接触。液冷板200上朝向电池模组100的一侧设置有绝缘层，绝缘层通过喷涂绝缘材料形成，喷涂过程中控制绝缘层的厚度和导热系数以减小热阻。Exemplarily, the liquid-cooling bottom plate 210 has an installation groove, and the liquid-cooling top plate 220 is disposed in the installation groove. The installation slot can limit the position of the liquid-cooling top plate 220, facilitate the assembly of the liquid-cooling top plate 220 and the liquid-cooling bottom plate 210, and prevent the liquid-cooling top plate 220 from positional deviation on the liquid-cooling bottom plate 210. The outer periphery of the notch of the mounting groove has a flat edge for connection and assembly with adjacent components. In one embodiment, the outer bottom surface of the mounting groove forms a second end surface, which is in direct contact with the thermally conductive adhesive. An insulating layer is provided on the side of the liquid cooling plate 200 facing the battery module 100. The insulating layer is formed by spraying an insulating material. During the spraying process, the thickness and thermal conductivity of the insulating layer are controlled to reduce thermal resistance.
示例性地，电池包还包括顶护板300，顶护板300设置在液冷顶板220的上方，顶护板300和液冷板200密封连接。示例性地，顶护板300的四周边沿和液冷底板210的四周边沿进行连接，连接方式可采用焊接或螺钉连接等。示例性地，可以在顶护板300和液冷板200中的其中一个设置定位孔，另外一个设置定位柱，将两者进行定位，以方便装配。顶护板300的设置能够保护液冷板200不直接被空气、雨水等侵蚀，从而提高电池包的安全性能并延长电池包的使用寿命。Exemplarily, the battery pack further includes a top shield 300 , which is disposed above the liquid cooling top plate 220 , and the top shield 300 and the liquid cooling plate 200 are sealingly connected. For example, the four peripheral edges of the top shield 300 and the four peripheral edges of the liquid cooling bottom plate 210 are connected, and the connection method may be welding or screw connection. For example, a positioning hole can be provided on one of the top shield 300 and the liquid cooling plate 200, and a positioning post can be provided on the other to position the two to facilitate assembly. The arrangement of the top guard 300 can protect the liquid cooling plate 200 from being directly eroded by air, rain, etc., thereby improving the safety performance of the battery pack and extending the service life of the battery pack.
示例性地，顶部板具有向上凸起的腔体，腔体正对液冷顶板220设置。腔体的设置使顶护板300和流道221之间留有一定间隙，能够起到良好的保温作用。可选地，腔体的顶端距离流道221之间的竖直距离可以为0.5毫米(mm)、1mm或1.5mm等，根据实际情况进行设置即可。示例性地，顶护板300的外侧可以设置抗石击涂层，起到抗石击、耐腐蚀和保温的作用。Illustratively, the top plate has an upwardly protruding cavity, and the cavity is disposed facing the liquid cooling top plate 220 . The arrangement of the cavity leaves a certain gap between the top guard plate 300 and the flow channel 221, which can provide a good thermal insulation effect. Optionally, the vertical distance between the top of the cavity and the flow channel 221 can be 0.5 millimeters (mm), 1 mm or 1.5 mm, etc., which can be set according to the actual situation. For example, an anti-stone chip coating may be provided on the outside of the top protection plate 300 to provide stone chip resistance, corrosion resistance, and thermal insulation.
示例性地，顶护板300和液冷顶板220之间设置有保温泡棉400。示例性地， 保温泡棉400设置有多个，保温泡棉400的形状为条状，多个保温泡棉400间隔设置。保温泡棉400可通过粘接的方式固定在液冷顶板220上。保温泡棉400的设置既可以避免顶护板300和液冷板200之间的振动拍打，降低成本同时不会降低保温效果。Exemplarily, thermal insulation foam 400 is disposed between the top protective plate 300 and the liquid cooling top plate 220 . For example, multiple thermal insulation foams 400 are provided, the thermal insulation foams 400 are in a strip shape, and the multiple thermal insulation foams 400 are arranged at intervals. The thermal insulation foam 400 can be fixed on the liquid cooling top plate 220 by bonding. The arrangement of the thermal insulation foam 400 can avoid vibration and flapping between the top protection plate 300 and the liquid cooling plate 200, thereby reducing costs without reducing the thermal insulation effect.
参见图3，电池模组100还包括汇流排130，汇流排130设置在电芯10的顶部，导热胶涂覆于汇流排130和液冷板200之间。汇流排130将多个电芯10进行电连接，在高倍率充放电过程中，其产生的热量可以快速被带走，从而汇流排130过流能力得到增加。Referring to FIG. 3 , the battery module 100 also includes a bus bar 130 . The bus bar 130 is disposed on the top of the battery cell 10 , and thermally conductive glue is coated between the bus bar 130 and the liquid cooling plate 200 . The bus bar 130 electrically connects multiple battery cells 10. During high-rate charging and discharging processes, the heat generated by the bus bar 130 can be quickly taken away, thereby increasing the overcurrent capacity of the bus bar 130.
在一实施例中，参见图4，电池模组100包括支架110，支架110上设置有多个定位槽111，电芯10的底部放置在定位槽111中。由于本实施例中的电芯10为圆柱型，因此，定位槽111为圆柱型凹槽，凹槽的深度和直径大小根据电芯10的尺寸进行设置即可，保证电芯10能够放入定位槽111中并对电芯10起到定位的作用，防止电芯10发生倾斜。In one embodiment, referring to FIG. 4 , the battery module 100 includes a bracket 110 . The bracket 110 is provided with a plurality of positioning slots 111 , and the bottom of the battery core 10 is placed in the positioning slots 111 . Since the battery core 10 in this embodiment is cylindrical, the positioning groove 111 is a cylindrical groove. The depth and diameter of the groove can be set according to the size of the battery core 10 to ensure that the battery core 10 can be placed in the positioning position. It is in the groove 111 and plays a role in positioning the battery core 10 to prevent the battery core 10 from tilting.
示例性地，参见图3至图6，电池模组100还包括托盘120，托盘120上设置有多个泄压孔121，定位槽111的底部开设有通孔113，支架110的底部设置有支撑部112，支撑部112和托盘120接触设置，通孔113和泄压孔121连通。泄压孔121和通孔113的设置能够将电芯10的热量或电芯10热失控时产生的气体快速从电芯10的底部导出，增强散热效果，增加电池整体结构的安全性能。托盘120为金属结构，支架110采用塑胶或其他绝缘材料，从而支架110能够将电芯10和托盘120进行绝缘。For example, referring to FIGS. 3 to 6 , the battery module 100 further includes a tray 120 . The tray 120 is provided with a plurality of pressure relief holes 121 , a through hole 113 is provided at the bottom of the positioning groove 111 , and a support is provided at the bottom of the bracket 110 The support part 112 is in contact with the tray 120 , and the through hole 113 is connected with the pressure relief hole 121 . The arrangement of the pressure relief hole 121 and the through hole 113 can quickly lead the heat of the battery core 10 or the gas generated when the battery core 10 is thermally out of control, from the bottom of the battery core 10, enhance the heat dissipation effect, and increase the safety performance of the overall battery structure. The tray 120 has a metal structure, and the bracket 110 is made of plastic or other insulating materials, so that the bracket 110 can insulate the battery core 10 and the tray 120 .
示例性地，支撑部112为环肋，环肋的第一端与通孔113连通，环肋的第二端与泄压孔121连通。本实施例中，泄压孔121、通孔113以及环肋同心设置。环肋的一个作用在于使电芯10热失控产生的高温气体迅速排出，当一个电芯10发生热失控时，电芯10产生的高温气体可从电芯10底部的通孔113沿着环肋从泄压孔121排出，而不会扩散蔓延到其他电芯10，从而避免单个电芯10热失控造成电池整体损坏或电池***等危险。环肋的另一个作用在于将支架110支撑于托盘120上，在本实施例中，每个通孔113的外周均设置有环肋，从而支架110能够平衡且稳定地放置在托盘120上。在其他实施例中，支撑部112也可以是设置在支架110底部的块状结构或弧形肋等。For example, the support part 112 is an annular rib, the first end of the annular rib is connected to the through hole 113 , and the second end of the annular rib is connected to the pressure relief hole 121 . In this embodiment, the pressure relief hole 121, the through hole 113 and the ring rib are arranged concentrically. One function of the ring rib is to quickly discharge the high-temperature gas generated by the thermal runaway of the battery core 10. When a battery core 10 undergoes thermal runaway, the high-temperature gas generated by the battery core 10 can pass through the through hole 113 at the bottom of the battery core 10 along the ring rib. It is discharged from the pressure relief hole 121 without spreading to other cells 10 , thereby avoiding dangers such as overall damage to the battery or battery explosion caused by thermal runaway of a single cell 10 . Another function of the ring rib is to support the bracket 110 on the tray 120. In this embodiment, a ring rib is provided on the periphery of each through hole 113, so that the bracket 110 can be placed on the tray 120 in a balanced and stable manner. In other embodiments, the support portion 112 may also be a block structure or an arc-shaped rib provided at the bottom of the bracket 110 .
示例性地，电池包还包括箱体500，液冷板200和箱体500进行密封连接。液冷板200和箱体500之间的连接方式可以采用焊接或是通过螺丝进行连接。可选地，箱体500的内部设置有挡板510，挡板510能够将箱体500的内部分隔成多个隔仓，电池模组100设置在隔仓中，托盘120上设置有翻边，翻边搭设在挡板510上。在本实施例中，挡板510将箱体500的内部分隔成四个隔仓，每个隔仓内均放置有一个电池模组100。在其他实施中，电池模组100的数量可以为一个、两个或三个等，根据使用需要进行设置即可。Exemplarily, the battery pack further includes a case 500, and the liquid cooling plate 200 and the case 500 are sealedly connected. The connection between the liquid cooling plate 200 and the box 500 can be welded or screwed. Optionally, a baffle 510 is provided inside the box 500. The baffle 510 can divide the inside of the box 500 into multiple compartments. The battery module 100 is arranged in the compartments, and the tray 120 is provided with flanges. The flange is set up on the baffle 510. In this embodiment, the baffle 510 divides the interior of the box 500 into four compartments, and one battery module 100 is placed in each compartment. In other implementations, the number of battery modules 100 can be one, two, or three, etc., which can be set according to usage requirements.

Claims (12)

  1. 一种电池包，所述电池包包括：A battery pack, the battery pack includes:
    至少一个电池模组(100)，每个所述电池模组(100)包括多个竖直设置的电芯(10)；At least one battery module (100), each battery module (100) including a plurality of vertically arranged battery cells (10);
    液冷板(200)，所述液冷板(200)包括液冷顶板(220)和液冷底板(210)，所述液冷顶板(220)上设置有流道(221)，所述液冷底板(210)具有第一端面和第二端面，所述液冷顶板(220)连接于所述第一端面，所述第二端面朝向所述电池模组(100)设置，且所述液冷底板(210)与每个所述电芯(10)垂直设置。Liquid cooling plate (200). The liquid cooling plate (200) includes a liquid cooling top plate (220) and a liquid cooling bottom plate (210). The liquid cooling top plate (220) is provided with a flow channel (221). The liquid cooling plate (220) is provided with a flow channel (221). The cold bottom plate (210) has a first end face and a second end face, the liquid cooling top plate (220) is connected to the first end face, the second end face is disposed toward the battery module (100), and the liquid cooling top plate (220) is disposed toward the battery module (100). The cold bottom plate (210) is arranged vertically with each battery core (10).
  2. 根据权利要求1所述的电池包，其中，所述液冷板(200)与所述电池模组(100)之间设置有导热胶，所述导热胶和所述第二端面贴合设置。The battery pack according to claim 1, wherein a thermally conductive adhesive is provided between the liquid cooling plate (200) and the battery module (100), and the thermally conductive adhesive is attached to the second end surface.
  3. 根据权利要求1所述的电池包，其中，所述液冷底板(210)具有安装槽，所述液冷顶板(220)设置在所述安装槽内，所述安装槽的外底面形成所述第二端面。The battery pack according to claim 1, wherein the liquid cooling bottom plate (210) has a mounting groove, the liquid cooling top plate (220) is disposed in the mounting groove, and the outer bottom surface of the mounting groove forms the Second end face.
  4. 根据权利要求3所述的电池包，其中，所述电池包还包括顶护板(300)，所述顶护板(300)设置在所述液冷顶板(220)的上方，所述顶护板(300)与所述液冷板(200)密封连接。The battery pack according to claim 3, wherein the battery pack further includes a top shield (300), the top shield (300) is disposed above the liquid cooling top plate (220), the top shield The plate (300) is sealingly connected to the liquid cooling plate (200).
  5. 根据权利要求4所述的电池包，其中，所述顶护板(300)具有向上凸出的腔体，所述腔体正对所述液冷顶板(220)设置。The battery pack according to claim 4, wherein the top protective plate (300) has an upwardly protruding cavity, and the cavity is disposed directly facing the liquid cooling top plate (220).
  6. 根据权利要求5所述的电池包，其中，所述顶护板(300)与所述液冷顶板(220)之间设置有保温泡棉(400)。The battery pack according to claim 5, wherein thermal insulation foam (400) is provided between the top protective plate (300) and the liquid cooling top plate (220).
  7. 根据权利要求4-6任一项所述的电池包，其中，所述顶护板(300)的外侧设置有抗石击涂层。The battery pack according to any one of claims 4 to 6, wherein an anti-stone chip coating is provided on the outside of the top guard plate (300).
  8. 根据权利要求1-6任一项所述的电池包，其中，所述电池模组(100)包括支架(110)，所述支架(110)上设置有多个定位槽(111)，所述电芯(10)的底部固定于所述定位槽(111)中。The battery pack according to any one of claims 1 to 6, wherein the battery module (100) includes a bracket (110), and a plurality of positioning slots (111) are provided on the bracket (110). The bottom of the battery core (10) is fixed in the positioning groove (111).
  9. 根据权利要求8所述的电池包，其中，所述电池模组(100)还包括托盘(120)，所述托盘(120)上设置有多个泄压孔(121)，所述定位槽(111)的底部开设有通孔(113)，所述支架(110)的底部设置有支撑部(112)，所述支撑部(112)与所述托盘(120)接触设置，所述通孔(113)与所述泄压孔(121)连通。The battery pack according to claim 8, wherein the battery module (100) further includes a tray (120), the tray (120) is provided with a plurality of pressure relief holes (121), and the positioning groove ( A through hole (113) is provided at the bottom of the bracket (111), and a support portion (112) is provided at the bottom of the bracket (110). The support portion (112) is in contact with the tray (120), and the through hole (113) is provided at the bottom of the bracket (110). 113) is connected with the pressure relief hole (121).
  10. 根据权利要求9所述的电池包，其中，所述支撑部(112)为环肋，所述环肋的第一端与所述通孔(113)连通，所述环肋的第二端与所述泄压孔(121)连通。The battery pack according to claim 9, wherein the support part (112) is an annular rib, a first end of the annular rib is connected to the through hole (113), and a second end of the annular rib is connected to the through hole (113). The pressure relief holes (121) are connected.
  11. 根据权利要求1-6任一项所述的电池包，其中，所述电池包还包括箱体(500)，所述液冷板(200)与所述箱体(500)密封连接。The battery pack according to any one of claims 1 to 6, wherein the battery pack further includes a box body (500), and the liquid cooling plate (200) is sealingly connected to the box body (500).
  12. 根据权利要求11所述的电池包，其中，所述箱体(500)的内部设置有挡板(510)，所述挡板(510)将所述箱体(500)的内部分成多个隔仓，所述电池模组(100)设置在所述隔仓内。The battery pack according to claim 11, wherein a baffle (510) is provided inside the box (500), and the baffle (510) divides the inside of the box (500) into a plurality of compartments. Compartment, the battery module (100) is arranged in the compartment.
PCT/CN2022/129127 2022-06-17 2022-11-02 Battery pack WO2023240897A1 (en)

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CN113690510A (en) * 2021-08-26 2021-11-23 安徽江淮汽车集团股份有限公司 Explosion-proof liquid cooling structure of cylinder battery module
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CN216529223U (en) * 2021-11-18 2022-05-13 湖北亿纬动力有限公司 Battery pack
CN216597721U (en) * 2021-09-28 2022-05-24 北京车和家汽车科技有限公司 Battery pack and vehicle
CN217589138U (en) * 2022-06-13 2022-10-14 湖北亿纬动力有限公司 Liquid cooling plate assembly, battery box and battery pack

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109103377A (en) * 2018-08-21 2018-12-28 福建祥鑫股份有限公司 New-energy automobile power battery cabinet and its forming method
CN215816174U (en) * 2021-07-05 2022-02-11 恒大新能源技术(深圳)有限公司 Battery module and battery pack
CN113690510A (en) * 2021-08-26 2021-11-23 安徽江淮汽车集团股份有限公司 Explosion-proof liquid cooling structure of cylinder battery module
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