WO2020140409A1 - Structure de boîtier de batterie et véhicule électrique - Google Patents

Structure de boîtier de batterie et véhicule électrique Download PDF

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Publication number
WO2020140409A1
WO2020140409A1 PCT/CN2019/093466 CN2019093466W WO2020140409A1 WO 2020140409 A1 WO2020140409 A1 WO 2020140409A1 CN 2019093466 W CN2019093466 W CN 2019093466W WO 2020140409 A1 WO2020140409 A1 WO 2020140409A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
battery
box
sleeve
mounting
Prior art date
Application number
PCT/CN2019/093466
Other languages
English (en)
Chinese (zh)
Inventor
杰龙清
马习涛
刘安龙
Original Assignee
广州小鹏汽车科技有限公司
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 广州小鹏汽车科技有限公司 filed Critical 广州小鹏汽车科技有限公司
Publication of WO2020140409A1 publication Critical patent/WO2020140409A1/fr

Links

Classifications

    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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 invention is used in the field of electric vehicles, in particular to a battery box structure and an electric vehicle.
  • the research on power battery system is one of the core technologies for the development of electric vehicles.
  • the power battery assembly is an energy storage device of an electric vehicle.
  • the cruising range of an electric vehicle is closely related to the capacity and quality of the power battery.
  • the requirements of electric vehicles on cruising range are increasing, the larger the size of the power battery box, the higher the structural design requirements of the battery box, the existing battery box can no longer meet the strength and light weight Excellent requirements.
  • the purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a battery box structure and an electric vehicle, which can make the load distribution of the battery box structure more uniform and improve the utilization of the internal space of the battery box To achieve a lightweight design of the battery box structure.
  • a battery box structure including an upper box assembly and a lower box assembly, the upper box assembly and the lower box assembly are connected, and a battery unit is formed inside A cavity is arranged, and a plurality of mounting components for transmitting force are provided between the upper box assembly and the lower box assembly, the mounting assembly is arranged through the battery cell, and the upper end and the upper side of the mounting assembly
  • the cabinet component is connected, and the lower end of the mounting component is connected with the lower cabinet component.
  • the upper case assembly and the lower case assembly are hermetically connected to form a sealed battery cell arrangement cavity inside, and the connection between the mounting assembly and the upper case assembly is sealed, and the mounting The joint between the component and the lower box component is sealed.
  • the mounting assembly includes a first connector, a lower end of the first connector is welded to the lower box assembly, and an upper end of the first connector is connected to the upper box by a threaded fastener Components are connected, and a seal is provided between the first connector and the upper box component.
  • a supporting beam is provided on the lower box assembly, and the first connecting piece is welded on the supporting beam.
  • the support beam is provided with a through hole
  • the first connecting member is a first sleeve
  • the mounting assembly further includes a second connecting member
  • the second connecting member extends into the through hole
  • a lower end of the second connector is provided with an end stuck under the via hole, the end is welded to the support beam
  • the first sleeve is provided with a welding hole
  • a steel screw sleeve is embedded inside the upper end barrel of the first sleeve, and a threaded fastener mounting hole is provided on the upper box assembly, and the threaded rigid member passes through the threaded rigid member mounting hole and Wire screw connection.
  • annular gasket installation groove is provided on the upper end of the first sleeve, and the gasket is installed in the gasket installation groove.
  • an insulating layer is provided outside the first sleeve.
  • the second connecting member is a second sleeve
  • a groove is provided at the bottom of the support beam, and the end is embedded in the groove.
  • the electric vehicle includes the battery box structure described in any of the above technical solutions.
  • the battery unit is arranged with a cavity for placing the battery unit, and there are a number of mounting components between the upper box assembly and the lower box assembly.
  • the weight of the battery unit can be shared by the upper box assembly and the lower box assembly, so that the load distribution of the battery box structure is more uniform.
  • the material of the lower box floor is reduced
  • the thickness and extruding height reserve enough space for the battery unit layout, realize the weight reduction of the lower box assembly, improve the energy density of the power battery assembly, and improve the utilization rate of the inner space of the box.
  • FIG. 1 is a schematic structural view of an embodiment of the present invention
  • FIG. 2 is an axonometric view of the mounting assembly of the embodiment shown in FIG. 1;
  • FIG. 3 is an exploded view of the mounting assembly of the embodiment shown in FIG. 1;
  • FIG. 4 is a cross-sectional view of the mounting assembly of one embodiment shown in FIG. 1;
  • FIG. 5 is an axonometric view of the connection between the mounting assembly and the support beam of the embodiment shown in FIG. 1;
  • FIG. 6 is a cross-sectional view of the connection between the mounting assembly and the support beam of the embodiment shown in FIG. 1.
  • the meaning of “several” is one or more, the meaning of “multiple” is more than two, “greater than”, “less than”, “exceeded”, etc. are understood as excluding the number; “above”, “below” “, “within” Etc. are understood to include this number.
  • first and “second” are only used for the purpose of distinguishing technical features, they cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features Or implicitly indicate the sequence of the indicated technical features.
  • the words “setup”, “installation”, “connection” and other terms should be understood in a broad sense.
  • they may be directly connected or indirectly connected through an intermediate medium; they may be fixedly connected, or It can be a detachable connection, or it can be integrally formed; it can be a mechanical connection, it can be an electrical connection or can communicate with each other; it can be a connection between two components or an interaction between two components.
  • Those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in conjunction with the specific content of the technical solution.
  • an embodiment of the present invention provides a battery case structure, including an upper case assembly 1 and a lower case assembly 2, the upper case assembly 1 and the lower case assembly 2 are connected, and in A battery cell arrangement cavity 3 is formed inside, and a plurality of force-transmitting mounting assemblies 4 are provided between the upper case assembly 1 and the lower case assembly 2, and the mounting assembly 4 penetrates the battery unit arrangement cavity 3
  • the mounting assembly 4 is preferably arranged in the middle of the battery cell arrangement cavity 3, the upper end of the mounting assembly 4 is connected to the upper case assembly 1, and the lower end of the mounting assembly 4 is connected to the lower case assembly 2.
  • the battery unit arrangement cavity 3 is used to place the battery unit.
  • a number of mounting assemblies 4 are provided between the upper case assembly 1 and the lower case assembly 2.
  • the mounting assembly 4 can reduce the weight of the battery unit by the upper case assembly 1 and
  • the lower box assembly 2 bears together to make the load distribution of the battery box structure more uniform.
  • the thickness and extrusion height of the bottom plate of the lower box are reduced to arrange the battery cells Reserve enough space to realize the weight reduction of the lower box assembly 2, improve the energy density of the power battery assembly, and improve the utilization rate of the inner space of the box.
  • the upper case assembly 1 and the lower case assembly 2 are sealed or unsealed, preferably, in order to ensure a good sealing of the battery case and avoid affecting the normal operation of the internal battery cells ,
  • the upper case assembly 1 and the lower case assembly 2 are sealedly connected, the connection place of the mounting assembly 4 and the upper case assembly 1 is sealed, and the connection of the mounting assembly 4 and the lower case assembly 2 It is sealed in place, and the cavity 3 is arranged to form a sealed battery cell inside, and the sealing process may adopt methods such as bonding, welding, sealing ring, and sealing pad.
  • the mounting component 4 may adopt a single component or a structure in which multiple components are assembled with each other.
  • the mounting component 4 includes a first Connecting piece 41, the lower end of the first connecting piece 41 is welded to the lower box assembly 2, the welding is full welding, high strength, reliable sealing, the upper end of the first connecting piece 41 is connected to the The upper box assembly 1 is connected, and a sealing pad 42 is provided between the first connector 41 and the upper box assembly 1, and a threaded fastener fastens the first connector 41 to the upper box assembly 1 Afterwards, the sealing gasket 42 is clamped to achieve a good seal and ensure the airtightness inside the cabinet when the upper and lower cabinet components 2 are assembled.
  • the mounting assembly 4 is directly connected to the lower box assembly 2.
  • the lower box assembly 2 includes a bottom plate, and the bottom plate is provided with a support beam 21.
  • the bottom plate preferably adopts a double-layer plate structure. There is a sealed space between the laminates.
  • the support beam 21 is welded to the bottom plate or connected in other ways.
  • the support beam 21 can increase the strength of the lower box assembly 2; second, the support beam 21 can be used to locate the battery unit, for example,
  • the support beam 21 is provided with a fastening connection hole 22 for installing a battery unit, and the battery unit can be fixed on the support beam 21 by a fastener connected to the fastening connection hole 22; 4 can be connected to the support beam 21, for example, in some embodiments, the first connecting member 41 is welded to the support beam 21, and the mounting assembly 4 is provided on the support beam 21 to enable the mounting assembly 4 to avoid Turn on the battery unit to avoid affecting the layout space of the battery unit.
  • the support beam 21 of the lower box assembly 2 is provided with four mounting assemblies 4.
  • the load of the cabinet is balanced, and the height of the bottom plate of the lower cabinet is only 10 mm.
  • the thickness of the bottom plate is only 2mm, which realizes the weight reduction of the product, and more space for the layout of the battery cells is reserved inside the box; relative to the existing technology: the lower box is generally guaranteed to have strength, the bottom plate thickness is 2.5mm, and the bottom plate is extruded Height 18-20mm; obvious advantages.
  • the support beam 21 is provided with a through hole
  • the first connecting member 41 is a first sleeve.
  • the mounting assembly 4 further includes a second connector 43, the second connector 43 passes through the through hole and extends into the first sleeve, the second The cross-sectional size of the connecting member 43 is smaller than the cross-sectional size of the first sleeve, and the size of the via hole can be set smaller to avoid affecting the strength of the support beam.
  • the lower end of the second connecting member 43 is provided with an end 44 that is caught under the via hole, the end 44 is welded to the support beam 21, and the first sleeve is provided with a welding hole 45, the first sleeve is The second connecting member 43 is welded at the welding hole 45, and the welding positions are all welded, which has high strength and reliable sealing.
  • the first sleeve and the second connecting member 43 form an integral body and are used together for force transmission .
  • the lower box assembly 2, the first sleeve, and the second connector 43 are preferably made of metal materials, such as Al6061-T6.
  • metal materials such as Al6061-T6.
  • the upper end of the first sleeve can be directly formed with screw holes. This form is prone to slipping teeth during disassembly and assembly, resulting in airtight failure; preferably, the upper end barrel of the first sleeve A wire screw sleeve 46 is embedded on the inner side, and the upper case assembly 1 is provided with a threaded fastener mounting hole, and the threaded rigid member is connected to the wire screw sleeve 46 through the threaded rigid member mounting hole, wherein the wire screw The sleeve 46 can effectively increase the locking torque during assembly of the upper and lower box assemblies 2, and there will be no slipping teeth during repeated assembly. The wire screw sleeve 46 can be disassembled and assembled multiple times.
  • the upper end of the first sleeve is provided with an annular gasket installation groove 48, and the gasket 42 is installed in the gasket installation groove 48.
  • the gasket installation groove 48 By providing the gasket installation groove 48, the accurate installation of the gasket 42 can be conveniently completed, and the deviation of the gasket 42 can be avoided.
  • an insulating layer 47 is provided on the outside of the first sleeve.
  • the insulating layer 47 can effectively prevent the insulation between the high-voltage busbar of the battery unit inside the box and the mounting point, which is convenient for low voltage Traces.
  • the second connecting member 43 may adopt a solid structure or a hollow structure.
  • the second connecting member 43 is a second sleeve, and the second sleeve is hollow, which can ensure structural strength. At the same time, reduce the overall structure weight.
  • the bottom of the support beam is flat.
  • the bottom of the support beam is provided with a groove, and the end 44 is embedded in the groove.
  • An embodiment of the present invention provides an electric vehicle including the battery box structure described in any of the above embodiments.
  • the electric vehicle has the battery box structure described in any of the above embodiments, so that the load distribution of the battery box structure is more uniform.
  • the thickness and squeeze of the bottom plate material of the lower box are reduced The height is sufficient to reserve enough space for the battery unit layout to achieve the weight reduction of the electric vehicle, increase the energy density of the power battery assembly, improve the utilization of the internal space of the box, and increase the mileage of the electric vehicle.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne une structure de boîtier de batterie et un véhicule électrique. La structure de boîtier de batterie comprend un élément de boîtier supérieur et un élément de boîtier inférieur, l'élément de boîtier supérieur et l'élément de boîtier inférieur étant reliés l'un à l'autre, et étant formés de manière à contenir une cavité de placement d'éléments de batterie ; et plusieurs éléments de montage pour transmettre une force sont agencés entre l'élément de boîtier supérieur et l'élément de boîtier inférieur, et les éléments de montage sont agencés à travers la cavité de placement d'éléments de batterie, les extrémités supérieures des éléments de montage étant reliées à l'élément de boîtier supérieur, et les extrémités inférieures des éléments de montage étant reliées à l'élément de boîtier inférieur. Le véhicule électrique comprend la structure de boîtier de batterie, les éléments de montage pouvant permettre au poids des éléments de batterie d'être partagés par l'élément de boîtier supérieur et l'élément de boîtier inférieur, de telle sorte que la distribution de charge de la structure de boîtier de batterie est plus uniforme. En supposant que la résistance de la structure de boîtier de batterie satisfait les exigences, l'épaisseur et la hauteur d'extrusion d'un matériau de plaque de base d'un boîtier inférieur sont réduites afin de réserver suffisamment d'espace pour le placement des éléments de batterie, ce qui permet de réaliser un élément de boîtier inférieur léger, d'améliorer la densité d'énergie d'un ensemble batterie d'alimentation et d'améliorer le taux d'utilisation d'un espace interne du boîtier.
PCT/CN2019/093466 2019-01-03 2019-06-28 Structure de boîtier de batterie et véhicule électrique WO2020140409A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201920022040.4 2019-01-03
CN201920022040.4U CN209843761U (zh) 2019-01-03 2019-01-03 电池箱体结构和电动车

Publications (1)

Publication Number Publication Date
WO2020140409A1 true WO2020140409A1 (fr) 2020-07-09

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WO (1) WO2020140409A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112550320A (zh) * 2020-12-03 2021-03-26 湖南有色黄沙坪矿业有限公司 一种矿用架线电机车改锂电池电机车
CN113306381A (zh) * 2021-06-29 2021-08-27 重庆长安汽车股份有限公司 一种纯电动汽车的电池包安装框架
CN115312952A (zh) * 2022-09-16 2022-11-08 江苏奥特帕斯新能源科技有限公司 电动汽车复合框架式电池箱体、组装工装及其组装方法

Families Citing this family (5)

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CN209747594U (zh) * 2019-05-29 2019-12-06 宁德时代新能源科技股份有限公司 电池箱体、电池包以及车辆
CN111674250B (zh) * 2020-06-09 2021-12-07 广州小鹏汽车科技有限公司 一种电池系统和车辆
CN113471607A (zh) * 2021-07-01 2021-10-01 广州小鹏汽车科技有限公司 电池箱体、电池包及电池箱体的装配方法
CN113745740B (zh) * 2021-11-05 2022-04-01 江苏时代新能源科技有限公司 箱体、电池及用电装置
EP4280354A1 (fr) * 2021-11-26 2023-11-22 Contemporary Amperex Technology Co., Limited Boîtier pour batterie, batterie, dispositif électrique, et procédé et dispositif de préparation de batterie

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CN205069720U (zh) * 2015-11-11 2016-03-02 杭州百超精密机械有限公司 新能源轿车电池盒钣金件
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CN207124224U (zh) * 2017-09-08 2018-03-20 东软集团股份有限公司 一种电动汽车及其电池包壳体
CN207542291U (zh) * 2017-09-15 2018-06-26 智车优行科技（上海）有限公司 电池壳体、电池系统及电动汽车
CN108237888A (zh) * 2018-02-05 2018-07-03 何钰 一种新能源汽车驱动装置

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CN205069720U (zh) * 2015-11-11 2016-03-02 杭州百超精密机械有限公司 新能源轿车电池盒钣金件
DE202016104744U1 (de) * 2016-08-30 2016-09-06 Otto Fuchs - Kommanditgesellschaft - Bodengruppe für eine Batteriemodulaufnahme
CN207052642U (zh) * 2016-11-18 2018-02-27 东软集团股份有限公司 一种电池箱以及具有该电池箱的电动汽车
CN207124224U (zh) * 2017-09-08 2018-03-20 东软集团股份有限公司 一种电动汽车及其电池包壳体
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112550320A (zh) * 2020-12-03 2021-03-26 湖南有色黄沙坪矿业有限公司 一种矿用架线电机车改锂电池电机车
CN113306381A (zh) * 2021-06-29 2021-08-27 重庆长安汽车股份有限公司 一种纯电动汽车的电池包安装框架
CN113306381B (zh) * 2021-06-29 2023-04-25 重庆长安汽车股份有限公司 一种纯电动汽车的电池包安装框架
CN115312952A (zh) * 2022-09-16 2022-11-08 江苏奥特帕斯新能源科技有限公司 电动汽车复合框架式电池箱体、组装工装及其组装方法
CN115312952B (zh) * 2022-09-16 2023-09-22 江苏奥特帕斯新能源科技有限公司 电动汽车复合框架式电池箱体、组装工装及其组装方法

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