WO2022068295A1 - 电芯模组、电池包及电池包的设计方法 - Google Patents

电芯模组、电池包及电池包的设计方法 Download PDF

Info

Publication number
WO2022068295A1
WO2022068295A1 PCT/CN2021/102990 CN2021102990W WO2022068295A1 WO 2022068295 A1 WO2022068295 A1 WO 2022068295A1 CN 2021102990 W CN2021102990 W CN 2021102990W WO 2022068295 A1 WO2022068295 A1 WO 2022068295A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
protrusion
cell module
cell
battery pack
Prior art date
Application number
PCT/CN2021/102990
Other languages
English (en)
French (fr)
Inventor
李阳
乔延涛
卢雨龙
吴俊涛
王修远
韩文刚
吕宁
尹芳芳
孙永健
曹云飞
Original Assignee
中国第一汽车股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国第一汽车股份有限公司 filed Critical 中国第一汽车股份有限公司
Publication of WO2022068295A1 publication Critical patent/WO2022068295A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present application relates to the field of battery technology, for example, to a battery cell module, a battery pack, and a design method for a battery pack.
  • the energy density and safety of the battery pack affect the cruising range of the vehicle and the safety of customers.
  • the space in the battery pack of an electric vehicle is limited. How to improve the space utilization rate in the battery pack under the premise of safe use is the key point of the battery pack design.
  • Lithium batteries have the characteristics of high energy density, large energy storage, long life, and wide operating temperature, and have been widely used in the field of electric vehicles. In the process of battery grouping, it is necessary to solve several problems such as its structure, electrical performance and safety.
  • the end plate of the cell module is designed with a fixing hole matched with the box body, and bolts pass through the fixing hole to fix the cell module and the box body.
  • the end plate is generally designed as a metal part, which needs to withstand the expansion force after charging and discharging of the battery, so it has a certain rigidity.
  • the bus bars between modules are generally fixed by screwing.
  • the end plate of the existing cell module is made of metal, an insulating member needs to be designed to be isolated from the cell, and the metal end plate and the battery pack box are fixed by bolts, resulting in high cost and complicated installation procedures.
  • the present application provides a design method of a cell module, a battery pack and a battery pack, which can handle the situation that the end plate of the cell module and the battery pack box are fixed by bolts, the cost is high, and the installation process is complicated.
  • an embodiment of the present application provides a cell module, which is accommodated in a lower case, and the cell module includes:
  • a cell group includes a plurality of cells, the plurality of cells are arranged in M rows and N columns, M and N are integers greater than or equal to 2; along at least one of the row direction and the column direction , an elastic medium is arranged between two adjacent battery cores;
  • the two end plates are arranged at opposite ends of the cell group, and each end plate is provided with a first protrusion and a second protrusion at intervals, and the second protrusion is located on the side of the first protrusion. Below, a groove is formed between the first protrusion and the second protrusion;
  • the side wall of the lower box is provided with a third protrusion
  • the third protrusion is inserted into the groove
  • the third protrusion can abut with the bottom wall of the groove
  • the lower surface of the first protrusion abuts the upper surface of the third protrusion along the vertical direction.
  • the upper surface of the second protrusion can abut against the lower surface of the third protrusion.
  • each of the end plates is further provided with a guiding inclined surface, and the guiding inclined surface is configured to guide the cell module to be inserted into the lower case.
  • the battery core module further includes a packing tape, and the packing tape is wound around the outer periphery of the battery core group and the two end plates.
  • the cell module further includes auxiliary tooling, each end plate is provided with a clamping groove, the auxiliary tooling has two opposite clamping claws, and the two clamping claws can be inserted into the The clamping grooves of the two end plates are used to clamp and insert the two end plates and the battery cell group into the lower case.
  • the end plate is made of plastic material.
  • the battery core module further includes a bus bar, and the bus bar is welded to the positive electrode or the negative electrode of the battery core.
  • a plurality of the cell modules are provided in the lower box, and the bus bars of two adjacent cell modules are welded.
  • an embodiment of the present application provides a battery pack, including a lower case and a battery module in any of the above solutions.
  • the present application provides a method for designing the above-mentioned battery pack, including:
  • the envelope space of the lower box and the length, width and height of the cell module are used as design input;
  • the cell modules are filled to the maximum extent in the enveloping space; wherein, a plurality of cell modules are arranged in the horizontal or vertical direction;
  • the expansion direction of the cell module is determined according to the arrangement direction of the cell group, and the side wall of the lower box located in the expansion direction of the cell module is used as a support beam;
  • FIG. 1 is a schematic structural diagram of a cell module in an embodiment of the application
  • FIG. 2 is a first structural schematic diagram of an end plate in an embodiment of the application
  • FIG. 3 is a partial structural schematic diagram of a cell module and a lower case in an embodiment of the application
  • FIG. 4 is a schematic structural diagram of a cell group in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of two battery cell modules in the embodiment of the application after being loaded into the lower box;
  • FIG. 6 is a schematic structural diagram of an auxiliary tool clamping end plate and a cell group in an embodiment of the present application
  • FIG. 7 is a second structural schematic diagram of an end plate in an embodiment of the application.
  • FIG. 8 is a schematic diagram of the battery cell module installed in the lower box body by the auxiliary tool in the embodiment of the application.
  • first position and second position are two different positions, and the first feature being “above”, “over” and “above” the second feature includes the first feature being “over” the second feature Directly above and diagonally above, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • this embodiment provides a cell module, which is accommodated in the lower case 5 , the cell module includes a cell group 1 , and the cell group 1 includes a plurality of cells 11 ,
  • the plurality of cells 11 are arranged in M rows and N columns, where M and N are both integers greater than or equal to 2; along at least one of the row direction and the column direction, an elastic medium 7 is provided between two adjacent cells 11 . (refer to FIG. 4 ), in order to prevent rigid contact between two adjacent cells 11 .
  • the elastic medium 7 can be respectively bonded with the two battery cells 11 by glue.
  • the elastic medium 7 can be a material such as foam.
  • the cell group 1 is square as a whole, and the cell module further includes two end plates 2 arranged at opposite ends of the cell group 1.
  • the end plates 2 are provided with first protrusions 21; the lower box for accommodating the cell module
  • the side wall of the body 5 is provided with a third protrusion 51 , the first protrusion 21 is located above the third protrusion 51 , and the lower surface of the first protrusion 21 and the upper surface of the third protrusion 51 are in vertical contact with each other. Then, the third protrusion 51 can abut with the side wall of the end plate 2 .
  • the connection can ensure that the relative position of the cell module and the lower box 5 is stable, and the use of bolts and nuts for fasteners can be avoided, which can effectively reduce costs and simplify the installation process.
  • the side wall of the lower case 5 can bear the expansion force.
  • the end plate 2 is further provided with second protrusions 22 spaced from the first protrusions 21 , the second protrusions 22 are located below the first protrusions 21 , the first protrusions 21 and the second protrusions A groove 23 is formed between 22 , the third protrusion 51 is inserted into the groove 23 , and the third protrusion 51 can abut against the bottom wall of the groove 23 .
  • the third protrusion 51 and the groove 23 form a wedge-shaped positioning structure, which can ensure a stable relative position between the cell module and the lower case 5 .
  • the upper surface of the second protrusion 22 can abut against the lower surface of the third protrusion 51 . It can prevent the end plate 2 from moving when the battery module is charged and discharged expansion.
  • the end plate 2 is provided with a guiding inclined surface 25 , and the guiding inclined surface 25 is configured to guide the cell module to be inserted into the lower box 5 .
  • the guiding inclined surface 25 is configured to guide the cell module to be inserted into the lower box 5 .
  • the cell module further includes a packing tape 3 , and the packing tape 3 is wound around the outer periphery of the cell group 1 and the two end plates 2 .
  • the binding of the battery pack 1 is increased by the packing tape 3 to ensure the overall structural stability of the battery pack 1 .
  • the end plate 2 is provided with a belt groove 24 , and a part of the packing belt 3 is located in the belt groove 24 . This arrangement can ensure that the relative positions of the packing tape 3, the end plate 2 and the cell group 1 are stable, and the position of the packing tape 3 can be prevented from changing.
  • the number of packing tapes 3 is two, and the two packing tapes 3 are arranged at intervals along the vertical direction.
  • the cell module further includes an auxiliary tool 9, and the end plate 2 is provided with a clamping groove 26, and the auxiliary tool 9 There are two opposite clamping claws 91 , and the clamping claws 91 can be inserted into the clamping grooves 26 of the two end plates 2 , so as to clamp the two end plates 2 and the battery pack 1 and insert them into the lower case 5 .
  • the end plate 2 is provided with a plurality of clamping grooves 26 at intervals along its length direction, and the plurality of clamping grooves 26 on the two end plates 2 are opposite to each other.
  • the clamping grooves 26 are matched; it is also possible to set multiple sets of two opposing clamping jaws 91 on the auxiliary tooling 9 to simultaneously cooperate with a plurality of clamping grooves 26 through one auxiliary tooling 9, so that the two end plates 2 and the two The cell group 1 between the end plates 2 is clamped together.
  • the elastic medium 7 is squeezed and deformed, and then the clamped two end plates 2 and the two end plates 2 can be clamped by the auxiliary tool 9.
  • the battery pack 1 is inserted into the lower box 5, and then the clamping jaws 91 are released. Under the action of the elastic force of the elastic medium 7, the battery pack 1 expands, and then the auxiliary tool 9 is removed from the lower box 5 and the end plate. 2 is pulled away, and the end plate 2 is tightly pressed against the lower box 5, so as to realize the operation of entering the battery pack 1 into the box. Since the packing belt 3 is eliminated, the auxiliary tooling 9 can be reused, thereby effectively reducing the production cost.
  • the two jaws 91 can be relatively close to or apart to achieve clamping and unclamping, which can be achieved by fixing one jaw 91 and moving the other jaw 91, or both jaws 91 moving simultaneously to achieve .
  • the two clamping claws 91 are both disposed on the connecting rod 92, and at the same time, after the relative position between the two clamping claws 91 is adjusted, the relative position of the two clamping claws 91 can be adjusted by the locking structure locking.
  • the locking structure can be a locking bolt that passes through the clamping jaw 91 and can abut against the connecting rod 92 , or two nuts that are threadedly connected with the connecting rod 92 , and the two nuts are located on two sides of the movable clamping jaw 91 respectively.
  • the end plate 2 is made of plastic material.
  • the end plate 2 may also be made of other insulating materials, so as to provide insulation protection for the battery core 11 .
  • the battery cell module further includes a bus bar 4 , and the bus bar 4 is welded to the positive electrode or the negative electrode of the battery cell 11 .
  • the bus bar 4 is arranged to connect the two cells 11 in series or in parallel.
  • the cell group 1 further includes a wire harness isolation plate 6, which is arranged above the plurality of cells 11, and a positioning groove 61 is provided on the wire harness isolation plate 6 above the positive electrodes of the cells 11.
  • the positioning groove 61 is set to locate bus bar 4.
  • a plurality of cell modules are arranged in the lower box 5 , and the bus bars 4 of two adjacent cell modules are welded.
  • the bus bars 4 of two adjacent cell modules are welded, and then a flexible printed circuit (FPC) 8 is installed on the wire harness isolation board 6.
  • FPC flexible printed circuit
  • This embodiment also provides a battery pack, which includes a lower case 5 and the battery module in the above solution.
  • This embodiment also provides a method for designing a battery pack, including:
  • S1 The envelope space of the lower box 5 and the length, width and height of the cell module are used as design inputs.
  • S3 Determine the expansion direction of the cell module according to the arrangement direction of the cell group 1, and use the side wall of the lower box 5 in the expansion direction of the cell module as a support beam.
  • S4 Design the clamping structure on the support beam of the lower box 5 and on the end plate 2 of the cell module, and use the clamping structure to limit the position of the cell module and the lower box 5 in the vertical direction.
  • S5 Design a guide structure on the end plate 2, and use the guide structure to guide the cell module into the envelope space of the lower box 5, so as to complete the assembly of the battery pack.
  • checking the structural strength of the battery pack includes checking the four parameters of extrusion, vibration, impact and cell expansion. When the four parameters meet the requirements, it indicates that the strength of the battery pack meets the standard.
  • Checking the electrical safety of the battery pack includes checking the creepage distance and clearance. When the creepage distance and clearance meet the requirements, it means that the electrical safety of the battery pack is up to standard.
  • the present application provides a battery cell module, a battery pack, and a design method for the battery pack.
  • the cell module includes a cell pack 1 , and the cell pack 1 includes a plurality of cells 11 , and the plurality of cells 11 are arranged in M rows and N columns. Arrangement, M and N are both integers greater than or equal to 2; along at least one of the row direction and the column direction, an elastic medium 7 is provided between two adjacent battery cells 11;
  • the two end plates 2 at opposite ends of the core group 1, each end plate 2 is provided with a first protrusion 21 and a second protrusion 22 at intervals, the second protrusion 22 is located below the first protrusion 21, and the first protrusion 22 is located below the first protrusion 21.
  • a groove 23 is formed between the protrusion 21 and the second protrusion 22 .
  • a third protrusion 51 is provided on the side wall of the lower box 5 for accommodating the battery module. Abutting and abutting the lower surface of the first protrusion 21 and the upper surface of the third protrusion 51 in the vertical direction. In this way, when the cell module is installed on the lower box 5, the position of the third protrusion 51 is limited by the groove 23, which can ensure the relative position of the cell module and the lower box 5 is stable, and can avoid the use of bolts, Fasteners for nuts can effectively reduce costs and simplify the installation process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电芯模组、电池包及电池包的设计方法，电芯模组容纳于下箱体(5)中，电芯模组包括：电芯组(1)，电芯组包括多个电芯(11)，多个电芯呈M行N列排布，M和N为大于等于2的整数；沿行方向和列方向中的至少一个方向，相邻两个电芯之间设有弹性介质(7)；设置于电芯组的相对两端的两个端板(2)，每个端板上间隔设有第一凸起(21)和第二凸起(22)，第一凸起和第二凸起之间形成供下箱体的侧壁上的第三凸起(51)插接的凹槽(23)。

Description

电芯模组、电池包及电池包的设计方法
本申请要求申请日为2020年9月29日、申请号为202011052050.6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。
技术领域
本申请涉及电池技术领域，例如涉及一种电芯模组、电池包及电池包的设计方法。
背景技术
电池包的能量密度和安全性影响着整车的续航里程和客户的使用安全。电动汽车电池包内的空间有限，如何在使用安全的前提下提高电池包内的空间利用率是电池包设计的关键点。锂电池具有能量密度高，储能多，寿命长，使用温度广等特点，在电动汽车领域中已经广泛使用。在电池成组过程中，要解决其结构、电性能及安全性等几方面问题。
目前的技术方案，电芯模组的端板设计有与箱体配合的固定孔，通过螺栓穿过固定孔，以使电芯模组与箱体固定。端板一般设计为金属件，需要承受电芯充放电后的膨胀力，所以有一定刚度。模组间汇流排一般通过螺接形式固定。但是，现有电芯模组的端板由于采用金属材质，与电芯间需设计绝缘件隔离，并且金属端板与电池包箱体通过螺栓固定，成本较高，安装工序复杂。
发明内容
本申请提供了一种电芯模组、电池包及电池包的设计方法，能够处理电芯模组的端板与电池包箱体通过螺栓固定，成本较高，安装工序复杂的情况。
一方面，本申请实施例提供一种电芯模组，容纳于下箱体中，该电芯模组包括：
电芯组，所述电芯组包括多个电芯，所述多个电芯呈M行N列排布，M和N为大于等于2的整数；沿行方向和列方向中的至少一个方向，相邻两个所述电芯之间设有弹性介质；
设置于所述电芯组的相对两端的两个端板，每个所述端板上间隔设有第一凸起和第二凸起，所述第二凸起位于所述第一凸起的下方，所述第一凸起和所 述第二凸起之间形成凹槽；
其中，所述下箱体的侧壁设有第三凸起，所述第三凸起插接于所述凹槽，且所述第三凸起能与所述凹槽的底壁抵接，且所述第一凸起的下表面与所述第三凸起的上表面沿竖直方向抵接。
可选地，所述第二凸起的上表面能与所述第三凸起的下表面抵接。
可选地，每个所述端板上还设有导向斜面，所述导向斜面设置为引导所述电芯模组插入所述下箱体。
可选地，所述电芯模组还包括打包带，所述打包带缠绕于所述电芯组以及两个所述端板的外周。
可选地，所述电芯模组还包括辅助工装，每个所述端板上设有夹持槽，所述辅助工装具有两个相对的夹爪，所述两个夹爪能插入所述两个端板的夹持槽，以将所述两个端板以及所述电芯组夹紧并塞入所述下箱体。
可选地，所述端板由塑料材质制成。
可选地，所述电芯模组还包括汇流排，所述汇流排与所述电芯的正极或负极焊接。
可选地，所述下箱体内设有多个所述电芯模组，相邻两个所述电芯模组的所述汇流排焊接。
另一方面，本申请实施例提供一种电池包，包括下箱体和上述任一方案中的电芯模组。
再一方面，本申请实施提供一种上述电池包的设计方法，包括：
将下箱体的包络空间和电芯模组的长、宽、高尺寸作为设计输入；
按照下箱体的包络空间，最大限度的在所述包络空间内填充电芯模组；其中，多个电芯模组沿横向或者纵向排布；
根据电芯组的排布方向确定电芯模组的膨胀方向，以将下箱体位于电芯模组的膨胀方向上的侧壁作为支撑梁；
设计下箱体的支撑梁上和电芯模组的端板上的卡接结构，并通过卡接结构对电芯模组和下箱体在竖直方向上限位；
于端板上设计导向结构，并利用导向结构引导电芯模组放入下箱体的包络空间，以完成电池包的组装；
对电池包的结构强度进行校核；
对电池包的电气安全性进行校核。
附图说明
图1为本申请实施例中电芯模组的结构示意图；
图2为本申请实施例中端板的结构示意图一；
图3为本申请实施例中电芯模组与下箱体的部分结构示意图；
图4为本申请实施例中电芯组的结构示意图；
图5为本申请实施例中两个电芯模组装入下箱体后的示意图；
图6为本申请实施例中辅助工装夹持端板和电芯组的结构示意图；
图7为本申请实施例中端板的结构示意图二；
图8为本申请实施例中通过辅助工装将电芯模组装入下箱体后的示意图。
图中：
1、电芯组；11、电芯；2、端板；21、第一凸起；22、第二凸起；23、凹槽；24、带槽；25、导向斜面；26、夹持槽；3、打包带；4、汇流排；5、下箱体；51、第三凸起；6、线束隔离板；61、定位槽；7、弹性介质；8、柔性电路板FPC；9、辅助工装；91、夹爪；92、连接杆。
具体实施方式
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，因此不能理解为对本申请的限制。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。
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，可以具体情况理解上述术语在本申请中的具体含义。
下面详细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，而不能理解为对本申请的限制。
如图1-图5所示，本实施例提供一种电芯模组，容纳于下箱体5中，该电芯模组包括电芯组1，电芯组1包括多个电芯11，多个电芯11呈M行N列排布，M和N均为大于等于2的整数；沿行方向和列方向中的至少一个方向，相邻两个电芯11之间设有弹性介质7(参考图4)，以防相邻的两个电芯11刚性接触。其中弹性介质7可通过胶水分别与两个电芯11粘结。弹性介质7可以为泡棉等材料。电芯组1整体呈方形，电芯模组还包括设置于电芯组1的相对两端的两个端板2，端板2上设有第一凸起21；容纳电芯模组的下箱体5的侧壁设有第三凸起51，第一凸起21位于第三凸起51的上方，且第一凸起21的下表面与第三凸起51的上表面沿竖直方向抵接，第三凸起51能与端板2的侧壁抵接。如此设置，当电芯模组安装至下箱体5时，通过第一凸起21和第三凸起51沿竖直方向抵接，并且通过第三凸起51和端板2的侧壁抵接，能够保证电芯模组和下箱体5的相对位置稳定，可避免采用螺栓、螺母的紧固件，可有效降低成本并简化安装工序。同时，当电芯模组充放电膨胀时，可通过下箱体5的侧壁承受膨胀力。
可选地，端板2上还设有与第一凸起21间隔设置的第二凸起22，第二凸起22位于第一凸起21的下方，第一凸起21和第二凸起22之间形成凹槽23，第三凸起51插接于凹槽23，且第三凸起51能与凹槽23的底壁抵接。第三凸起51和凹槽23形成楔形的定位结构，可保证电芯模组和下箱体5之间的相对位置稳定。可选地，第二凸起22的上表面能与第三凸起51的下表面抵接。可防止电芯模组充放电膨胀时，导致端板2窜动。
可选地，端板2上设有导向斜面25，导向斜面25设置为引导电芯模组插入下箱体5。如图2和图3所示，通过设置具有引导作用的导向斜面25，便于将电芯模组组装至下箱体5。
可选地，电芯模组还包括打包带3，打包带3缠绕于电芯组1以及两个端板2的外周。通过打包带3增加对电芯组1的束缚，以保证电芯组1整体结构稳定。可选地，端板2上设有带槽24，打包带3的一部分位于带槽24内。如此设置，能够保证打包带3与端板2以及电芯组1的相对位置稳定，可防止打包带3位 置变动。可选地，打包带3的数量为两个，两个打包带3沿竖直方向间隔设置。
作为其中的一种可替代方案，还可无需设置打包带3，如图6至图8所示，电芯模组还包括辅助工装9，端板2上设有夹持槽26，辅助工装9具有两个相对的夹爪91，夹爪91能插入两个端板2的夹持槽26，以将两个端板2以及电芯组1夹紧并塞入下箱体5。示例性地，端板2沿其长度方向间隔设置有多个夹持槽26，两个端板2上的多个夹持槽26两两相对，相应地，多个辅助工装9分别与两个夹持槽26配合；也可以在辅助工装9上设置多组两个相对的夹爪91以通过一个辅助工装9同时和多个夹持槽26配合，以将两个端板2以及位于两个端板2之间的电芯组1夹紧在一起，此时，弹性介质7受挤压而变形，然后可通过辅助工装9将夹紧的两个端板2以及位于两个端板2之间的电芯组1塞入下箱体5，然后松开夹爪91，在弹性介质7的弹性力的作用下，电芯组1膨胀，然后将辅助工装9从下箱体5和端板2之间抽离，端板2与下箱体5抵紧，以实现电芯组1的入箱作业。由于取消了打包带3，辅助工装9可重复利用，故而可有效降低生产成本。
可选地，两个夹爪91可相对靠近或远离从而可实现夹紧和松开，这可以通过一个夹爪91固定，另一个夹爪91活动实现，或者两个夹爪91同时活动以实现。本实施例中，两个夹爪91均设置于连接杆92上，同时，当两个夹爪91之间的相对位置调整好后，可通过锁止结构以将两个夹爪91的相对位置锁定。锁止结构可以为穿过夹爪91并能抵紧连接杆92的锁紧螺栓，或者与连接杆92螺纹连接的两个螺母，并且两个螺母分别位于活动的夹爪91的两侧。
可选地，端板2由塑料材质制成。在一实施例中，端板2还可以采用其他绝缘材料制成，如此便于为电芯11提供绝缘保护。
可选地，电芯模组还包括汇流排4，汇流排4与电芯11的正极或负极焊接。汇流排4设置为将两个电芯11串联或并联，通过焊接工艺，可避免采用固定汇流排4的紧固件和定位座等，可减少零部件的使用数量，并可简化安装工序。
可选地，电芯组1还包括线束隔离板6，线束隔离板6设置于多个电芯11的上方，且线束隔离板6上于电芯11的正极上方设有定位槽61，定位槽61设置为定位汇流排4。
可选地，如图5所示，下箱体5内设有多个电芯模组，相邻两个电芯模组的汇流排4焊接。当多个电芯模组装入下箱体5内后，将相邻两个电芯模组的汇流排4焊接，然后安装柔性电路板(Flexible Printed Circuit，FPC)8到线束 隔离板6。
本实施例还提供一种电池包，包括下箱体5和上述方案中的电芯模组。
本实施例还提供一种电池包的设计方法，包括：
S1：将下箱体5的包络空间和电芯模组的长、宽、高尺寸作为设计输入。
S2：按照下箱体5的包络空间，最大限度的在包络空间内填充电芯模组；其中，多个电芯模组沿横向或者纵向排布。
S3：根据电芯组1的排布方向确定电芯模组的膨胀方向，以将下箱体5位于电芯模组的膨胀方向上的侧壁作为支撑梁。
S4：设计下箱体5的支撑梁上和电芯模组的端板2上的卡接结构，并通过卡接结构对电芯模组和下箱体5在竖直方向上限位。
S5：于端板2上设计导向结构，并利用导向结构引导电芯模组放入下箱体5的包络空间，以完成电池包的组装。
S6：对电池包的结构强度进行校核。
S7：对电池包的电气安全性进行校核。
其中，对电池包的结构强度进行校核包括挤压、振动、冲击以及电芯膨胀四个参数进行校核，当四个参数均符合要求后，表明电池包的强度达标。对电池包的电气安全性进行校核包括爬电距离和电气间隙校核，当爬电距离和电气间隙满足要求后，表明电池包的电气安全性达标。
本申请提供一种电芯模组、电池包及电池包的设计方法，电芯模组包括电芯组1，电芯组1包括多个电芯11，多个电芯11呈M行N列排布，M和N均为大于等于2的整数；沿行方向和列方向中的至少一个方向，相邻两个电芯11之间设有弹性介质7；电芯模组还包括设置于电芯组1的相对两端的两个端板2，每个端板2上间隔设有第一凸起21和第二凸起22，第二凸起22位于第一凸起21的下方，第一凸起21和第二凸起22之间形成凹槽23。用于容纳电芯模组的下箱体5的侧壁上设有第三凸起51，第三凸起51插接于凹槽23，且第三凸起51能与凹槽23的底壁抵接且第一凸起21的下表面与第三凸起51的上表面沿竖直方向抵接。如此设置，当电芯模组安装至下箱体5时，通过凹槽23限制第三凸起51的位置，能够保证电芯模组和下箱体5的相对位置稳定，可避免采用螺栓、螺母的紧固件，可有效降低成本并简化安装工序。

Claims (10)

  1. 一种电芯模组，容纳于下箱体(5)中，所述电芯模组包括：
    电芯组(1)，所述电芯组(1)包括多个电芯(11)，所述多个电芯(11)呈M行N列排布，M和N为大于等于2的整数；沿行方向和列方向中的至少一个方向，相邻两个所述电芯(11)之间设有弹性介质(7)；
    设置于所述电芯组(1)的相对两端的两个端板(2)，每个所述端板(2)上间隔设有第一凸起(21)和第二凸起(22)，所述第二凸起(22)位于所述第一凸起(21)的下方，所述第一凸起(21)和所述第二凸起(22)之间形成凹槽(23)；
    其中，所述下箱体(5)的侧壁设有第三凸起(51)，所述第三凸起(51)插接于所述凹槽(23)，且所述第三凸起(51)能与所述凹槽(23)的底壁抵接，且所述第一凸起(21)的下表面与所述第三凸起(51)的上表面沿竖直方向抵接。
  2. 根据权利要求1所述的电芯模组，其中，所述第二凸起(22)的上表面能与所述第三凸起(51)的下表面抵接。
  3. 根据权利要求1所述的电芯模组，其中，每个所述端板(2)上还设有导向斜面(25)，所述导向斜面(25)设置为引导所述电芯模组插入所述下箱体(5)。
  4. 根据权利要求1所述的电芯模组，还包括打包带(3)，所述打包带(3)缠绕于所述电芯组(1)以及两个所述端板(2)的外周。
  5. 根据权利要求1所述的电芯模组，还包括辅助工装(9)，每个所述端板(2)上设有夹持槽(26)，所述辅助工装(9)具有两个相对的夹爪(91)，所述两个夹爪(91)能插入所述两个端板(2)的夹持槽(26)，以将所述两个端板(2)以及所述电芯组(1)夹紧并塞入所述下箱体(5)。
  6. 根据权利要求1所述的电芯模组，其中，所述端板(2)由塑料材质制成。
  7. 根据权利要求1所述的电芯模组，还包括汇流排(4)，所述汇流排(4)与所述电芯(11)的正极或负极焊接。
  8. 根据权利要求7所述的电芯模组，其中，所述下箱体(5)内设有多个所述电芯模组，相邻两个所述电芯模组的所述汇流排(4)焊接。
  9. 一种电池包，包括下箱体(5)和如权利要求1-8任一项所述的电芯模组。
  10. 一种如权利要求9所述的电池包的设计方法，包括：
    将下箱体(5)的包络空间和电芯模组的长、宽、高尺寸作为设计输入；
    按照下箱体(5)的包络空间，最大限度的在所述包络空间内填充电芯模组；其中，多个电芯模组沿横向或者纵向排布；
    根据电芯组(1)的排布方向确定电芯模组的膨胀方向，以将下箱体(5)位于电芯模组的膨胀方向上的侧壁作为支撑梁；
    设计下箱体(5)的支撑梁上和电芯模组的端板(2)上的卡接结构，并通过卡接结构对电芯模组和下箱体(5)在竖直方向上限位；
    于端板(2)上设计导向结构，并利用导向结构引导电芯模组放入下箱体(5)的包络空间，以完成电池包的组装；
    对电池包的结构强度进行校核；
    对电池包的电气安全性进行校核。
PCT/CN2021/102990 2020-09-29 2021-06-29 电芯模组、电池包及电池包的设计方法 WO2022068295A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011052050.6 2020-09-29
CN202011052050.6A CN112133858B (zh) 2020-09-29 2020-09-29 一种电芯模组、电池包及电池包的设计方法

Publications (1)

Publication Number Publication Date
WO2022068295A1 true WO2022068295A1 (zh) 2022-04-07

Family

ID=73844898

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/102990 WO2022068295A1 (zh) 2020-09-29 2021-06-29 电芯模组、电池包及电池包的设计方法

Country Status (2)

Country Link
CN (1) CN112133858B (zh)
WO (1) WO2022068295A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115377614A (zh) * 2022-09-29 2022-11-22 厦门海辰储能科技股份有限公司 隔离板组件及电池模组
CN115498345A (zh) * 2022-09-09 2022-12-20 海南小鹏汽车科技有限公司 线束隔离板、电池包和汽车
CN116053680A (zh) * 2023-02-14 2023-05-02 厦门海辰储能科技股份有限公司 一种电池模组及用电设备
CN116093514A (zh) * 2023-03-31 2023-05-09 乌海市君泽科技有限公司 一种锂电池组保护调节装置
FR3139670A1 (fr) * 2022-09-14 2024-03-15 Renault S.A.S. Ensemble pour batterie d’accumulateurs, véhicule automobile équipé d’un tel ensemble et procédé de fabrication d’un tel ensemble

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112133858B (zh) * 2020-09-29 2023-02-21 中国第一汽车股份有限公司 一种电芯模组、电池包及电池包的设计方法
CN215451597U (zh) * 2021-03-18 2022-01-07 欣旺达电动汽车电池有限公司 围框及电池包
CN113113708A (zh) * 2021-04-12 2021-07-13 中国第一汽车股份有限公司 一种固态电池模组、电池包及电池包的设计方法
CN113725548A (zh) * 2021-08-31 2021-11-30 蜂巢能源科技有限公司 电池包
CN113904054B (zh) * 2021-09-27 2023-06-30 蜂巢能源科技有限公司 一种电池包和动力装置
CN116061712A (zh) * 2021-11-04 2023-05-05 宁德时代新能源科技股份有限公司 电池舱、底盘和车辆
CN216389633U (zh) * 2021-11-30 2022-04-26 宁德时代新能源科技股份有限公司 端板、电池模块、电池及用电设备
CN114284643A (zh) * 2021-12-17 2022-04-05 上海瑞浦青创新能源有限公司 多排模组结构
CN114709533B (zh) * 2022-03-24 2024-06-21 中创新航科技股份有限公司 电池组及电池装置
CN115064830B (zh) * 2022-08-01 2023-07-14 欣旺达电动汽车电池有限公司 一种电芯模组、电池包结构及电动汽车
CN115411441B (zh) * 2022-11-01 2023-03-24 江苏正力新能电池技术有限公司 一种电池模组

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207818692U (zh) * 2018-01-19 2018-09-04 宁德时代新能源科技股份有限公司 电池模组
CN209029448U (zh) * 2018-11-16 2019-06-25 惠州亿纬锂能股份有限公司 一种电池模组
CN209071439U (zh) * 2018-12-07 2019-07-05 蜂巢能源科技有限公司 电池模组和电池包
CN209344162U (zh) * 2018-12-07 2019-09-03 蜂巢能源科技有限公司 电池包和车辆
CN209709038U (zh) * 2018-11-23 2019-11-29 深圳市比亚迪锂电池有限公司 一种电池模组
CN112133858A (zh) * 2020-09-29 2020-12-25 中国第一汽车股份有限公司 一种电芯模组、电池包及电池包的设计方法
CN213093308U (zh) * 2020-09-30 2021-04-30 中国第一汽车股份有限公司 一种电芯模组及电池包

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100696638B1 (ko) * 2005-09-05 2007-03-19 삼성에스디아이 주식회사 이차 전지 모듈
TWI386560B (zh) * 2010-08-17 2013-02-21 Metal Ind Res & Dev Ct Car battery module mating mechanism
JP6256246B2 (ja) * 2014-07-31 2018-01-10 株式会社Ｇｓユアサ 電源モジュール
CN205159404U (zh) * 2015-12-02 2016-04-13 北京长城华冠汽车科技股份有限公司 一种锂离子电池模组、锂离子电池箱和汽车
CN205985142U (zh) * 2016-08-31 2017-02-22 杭州捷能科技有限公司 一种电池箱
CN206040762U (zh) * 2016-08-31 2017-03-22 中航锂电（洛阳）有限公司 一种电池箱及其电池模块和电池模块夹具
CN206432307U (zh) * 2017-02-16 2017-08-22 宁德时代新能源科技股份有限公司 电池模组的外壳及电池模组
CN208028109U (zh) * 2018-02-24 2018-10-30 宿迁杉杉运通新能源系统有限公司 一种捆扎式电池模组
CN110120480A (zh) * 2019-04-23 2019-08-13 深圳市华宝新能源股份有限公司 电池模组外壳及电池模组

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207818692U (zh) * 2018-01-19 2018-09-04 宁德时代新能源科技股份有限公司 电池模组
CN209029448U (zh) * 2018-11-16 2019-06-25 惠州亿纬锂能股份有限公司 一种电池模组
CN209709038U (zh) * 2018-11-23 2019-11-29 深圳市比亚迪锂电池有限公司 一种电池模组
CN209071439U (zh) * 2018-12-07 2019-07-05 蜂巢能源科技有限公司 电池模组和电池包
CN209344162U (zh) * 2018-12-07 2019-09-03 蜂巢能源科技有限公司 电池包和车辆
CN112133858A (zh) * 2020-09-29 2020-12-25 中国第一汽车股份有限公司 一种电芯模组、电池包及电池包的设计方法
CN213093308U (zh) * 2020-09-30 2021-04-30 中国第一汽车股份有限公司 一种电芯模组及电池包

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115498345A (zh) * 2022-09-09 2022-12-20 海南小鹏汽车科技有限公司 线束隔离板、电池包和汽车
FR3139670A1 (fr) * 2022-09-14 2024-03-15 Renault S.A.S. Ensemble pour batterie d’accumulateurs, véhicule automobile équipé d’un tel ensemble et procédé de fabrication d’un tel ensemble
WO2024056326A1 (fr) * 2022-09-14 2024-03-21 Renault S.A.S. Ensemble pour batterie d'accumulateurs, véhiculé automobile équipé d'un tel ensemble et procede de fabrication d'un tel ensemble
CN115377614A (zh) * 2022-09-29 2022-11-22 厦门海辰储能科技股份有限公司 隔离板组件及电池模组
CN115377614B (zh) * 2022-09-29 2023-09-08 厦门海辰储能科技股份有限公司 隔离板组件及电池模组
CN116053680A (zh) * 2023-02-14 2023-05-02 厦门海辰储能科技股份有限公司 一种电池模组及用电设备
CN116093514A (zh) * 2023-03-31 2023-05-09 乌海市君泽科技有限公司 一种锂电池组保护调节装置
CN116093514B (zh) * 2023-03-31 2023-06-06 乌海市君泽科技有限公司 一种锂电池组保护调节装置

Also Published As

Publication number Publication date
CN112133858B (zh) 2023-02-21
CN112133858A (zh) 2020-12-25

Similar Documents

Publication Publication Date Title
WO2022068295A1 (zh) 电芯模组、电池包及电池包的设计方法
EP1812982B1 (en) Secondary battery pack having configuration of alternative orientation
EP3151307B1 (en) Battery module and battery pack comprising same
JP5889418B2 (ja) 信頼性が向上した電池モジュールアセンブリ及びこれを含む中大型電池パック
JP7300678B2 (ja) 結合電池モジュール、及び結合電池パック
KR101305224B1 (ko) 전지모듈 및 이를 포함하는 전지팩
EP3706189B1 (en) Battery module and battery pack
EP3678208B1 (en) Battery module, battery pack, and vehicle
KR20120016354A (ko) 구조적 안정성이 향상된 전지팩
CN212542554U (zh) 电池模组、用于电池模组成组的工装及电动汽车
US20200136108A1 (en) Energy storage apparatus
CN213093308U (zh) 一种电芯模组及电池包
CN218334106U (zh) 一种电池模组、电池及用电设备
CN219658948U (zh) 电池模块、电池和用电设备
CN219067027U (zh) 电池和用电设备
US20220109216A1 (en) Battery module and battery pack
WO2023000511A1 (zh) 电池模块、电池、用电设备、制备电池的方法和设备
EP4379913A1 (en) Battery, electrical device, and method and device for preparing battery
CN114374021A (zh) 动力电池总成
CN214336821U (zh) 一种通信用锂电池模组
CN115956321B (zh) 电池、用电设备、制备电池的方法和设备
CN216850167U (zh) 电池模组及电池包
KR102676208B1 (ko) 배터리 팩
CN219436061U (zh) 电池的束缚件、电池及用电装置
WO2024031416A1 (zh) 电池以及用电装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21873957

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21873957

Country of ref document: EP

Kind code of ref document: A1