WO2024021209A1 - 电池模组及电池包 - Google Patents

电池模组及电池包 Download PDF

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Publication number
WO2024021209A1
WO2024021209A1 PCT/CN2022/114485 CN2022114485W WO2024021209A1 WO 2024021209 A1 WO2024021209 A1 WO 2024021209A1 CN 2022114485 W CN2022114485 W CN 2022114485W WO 2024021209 A1 WO2024021209 A1 WO 2024021209A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery module
battery pack
end plate
belt
Prior art date
Application number
PCT/CN2022/114485
Other languages
English (en)
French (fr)
Inventor
周元
黄立亮
董云鹏
钟宇
Original Assignee
湖北亿纬动力有限公司
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Filing date
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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 WO2024021209A1 publication Critical patent/WO2024021209A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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

  • This application relates to the field of battery technology, for example, to a battery module and a battery pack.
  • This application provides a battery module and battery pack, which have a simple structure, high assembly efficiency, and high energy density.
  • this application provides a battery module, which includes:
  • a battery cell group includes multiple battery cells arranged in sequence
  • End plates are arranged on both sides of the battery core group, and an avoidance groove is provided on the side of the end plate away from the battery core group;
  • a fixing belt is embedded in the avoidance groove, and the fixing belt binds and fixes the end plate and the battery core group.
  • the present application provides a battery pack, including a battery box and a battery module in any of the above solutions.
  • the battery module is arranged in the battery box, and the battery module is fixed on the battery box through a fixing member. on the bottom of the battery box.
  • FIG. 1 is an exploded view of the battery module provided in the embodiment of the present application.
  • Figure 2 is a schematic structural diagram of the assembled battery module provided in the embodiment of the present application.
  • Figure 3 is a partial enlarged view of position A in Figure 2;
  • Figure 4 is a schematic structural diagram of the end plate provided in the embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of the battery pack provided in the embodiment of the present application.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral body.
  • 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 elements or an interaction between two elements.
  • the specific meanings of the above terms in this application can be understood on a case-by-case basis.
  • the term “above” or “below” a first feature on a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them.
  • the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than 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.
  • the battery module includes a battery pack, an end plate 200 and a fixing strap 300 .
  • the battery pack includes a plurality of battery cells 100 arranged in sequence, and a plurality of battery cells.
  • the cores 100 are arranged sequentially along the length direction of the battery module.
  • the end plates 200 are arranged on both sides of the battery module. One side of the end surface is connected to the battery module. The other side of the end plate 200 away from the battery module is provided with an avoidance device.
  • the fixing strap 300 is embedded in the groove 220 , and the end plate 200 and the battery pack can be bundled and fixed through the fixing strap 300 .
  • the fixing belt 300 is prevented from being displaced, ensuring the reliability of the fixing belt 300 in fixing the end plate 200 and the battery pack, and the fixing effect is good.
  • the battery core 100 in the battery pack in this embodiment is a square battery core, such as a lithium iron phosphate battery or a ternary battery. Its surface is covered with a layer of blue insulating film, which is a battery model. The main source of energy for the group.
  • the end plate 200 in this embodiment is provided with a reinforcing rib 210 on the side away from the battery core group.
  • a transition surface is provided between the edge of the reinforcing rib 210 and the edge of the end plate 200.
  • An avoidance groove 220 is provided.
  • the reinforcing ribs 210 include transverse ribs and longitudinal ribs. The transverse ribs and the longitudinal ribs are connected to each other to form a grid-like reinforcing rib 210, which effectively improves the mechanical strength and bending resistance of the end plate 200 and can withstand relatively large loads. It is not easy to deform under large external force.
  • the setting of the reinforcing ribs 210 can also correspondingly reduce the weight of the end plate 200 to increase the energy density of the battery module.
  • the end plate 200 and the battery core group, and between the battery core group and the fixing belt 300 there are provided between the end plate 200 and the battery core group, and between the battery core group and the fixing belt 300.
  • the arrangement of the insulating sheet 400 can achieve a good insulation effect and effectively avoid short circuit.
  • the insulating sheet 400 between the battery pack and the fixing strap 300 can also protect the battery pack.
  • the function of the fixing strap 300 is to avoid direct contact with the battery core 100, causing damage to the outer insulation film of the battery core 100.
  • the insulating sheet 400 can be fixed on the battery core 100 through structural adhesive bonding. The assembly is simple and the fixing effect is good.
  • foam 500 is provided between two adjacent battery cells 100 in the battery pack.
  • the foam 500 can absorb the installation tolerance between the battery core 100 and the end plate 200 to realize the battery module.
  • the foam 500 can absorb the expansion force caused by the deformation of the battery core 100 in the later stages of use of the battery module, thereby avoiding greater stress on the fixing strap 300.
  • the foam 500 can be arranged in a strip shape, and two strips of foam 500 are arranged between every two adjacent battery cores 100, wherein one strip of foam 500 is arranged at the top position of the end surface of the battery core 100, Another strip of foam 500 is disposed at the bottom of the end face of the battery core 100.
  • the two strips of foam 500 can be pasted on the end face of the battery core 100 through surface adhesive.
  • the end surfaces of two adjacent battery cores 100 are coated with structural glue, and the coating area of the smaller structure accounts for more than 90% of the end surface area of the battery core 100 , and the coating area of the structural glue is located on both sides. Between the strips of foam 500, the structural glue is provided to facilitate the positioning of the battery core 100, and the fixing effect is good.
  • the foam 500 can be made of polypropylene porous foam (Microcellular Polypropylene, MPP) material or polypropylene plastic foam (Expanded Polypropylene, EPP) material. Both the MPP material and the EPP material have a large number of tiny cells inside. It has excellent shock absorption, buffering, heat insulation and sound absorption properties, and can be recycled and reused, or naturally degraded, without causing white pollution, and has good environmental protection.
  • MPP Microcellular Polypropylene
  • EPP Exanded Polypropylene
  • each end plate 200 is provided with a plurality of escape grooves 220 , and every two escape grooves 220 form a group, and a fixing belt 300 is embedded in each group of escape grooves 220 .
  • the fixed belt 300 includes a steel belt 310 and a PET belt 320.
  • the steel belt 310 and the PET belt 320 are respectively provided corresponding to a set of avoidance grooves 220.
  • the steel belt 310 is made of SUS201 or other high-strength steel, and the steel belt 310 is used to restrain the battery core 100.
  • the main component that forms the pre-tightening force with the end plate 200, the steel strip 310 has good tensile properties and can provide sufficient strength after the battery module is assembled to ensure good fixation of the battery module. It is designed with an insulating layer on its edge. , used to prevent insulation failure caused by friction between the steel strip 310 and the battery core 100 .
  • the insulating layer can be made of rubber material or other insulating materials.
  • PET (Polyethylene terephthalate) belt 320 is made of engineering plastic (polyethylene terephthalate). Due to the lighter weight of engineering plastics, it can further reduce the weight of the entire battery module to further increase the energy of the battery module. density.
  • the depth of the escape groove 220 is greater than the thickness of the fixation belt 300, and the width of the relief groove 220 is greater than the width of the fixation belt 300, that is, the thickness of the steel belt 310.
  • the thickness of the PET strip 320 is less than the depth of the escape groove 220 , the width of the steel strip 310 , and the width of the PET strip 320 are both less than the width of the relief groove 220 .
  • the end plate 200 of this embodiment is provided with a fixing hole 230 .
  • the fixing hole 230 is provided through the reinforcing rib 210 .
  • the fixing hole 230 is provided to facilitate the installation of the battery module in the battery box.
  • the number of fixing holes 230 can be designed according to the weight of the entire battery module. In this embodiment, four fixing holes 230 are provided.
  • the fixing hole 230 may be set in an oval shape to adapt to the installation tolerance of the battery module.
  • the battery module in this embodiment includes a Cells Contact System (CCS) component 600.
  • the CCS component 600 is disposed above the battery pack, and the CCS component 600 is connected to the battery pack.
  • the CCS component 600 includes a number of interconnected connecting pieces, a plastic bracket, a temperature collecting component and a voltage collecting component.
  • the connecting pieces, temperature collecting parts and voltage collecting components are all arranged on the plastic bracket.
  • the connecting piece is connected to several cells in the battery pack. 100 poles are connected, and adjacent battery cells 100 can be connected in series through the connecting piece.
  • a nickel sheet is welded on the connecting piece, and the other end of the nickel sheet is connected to the collection harness of the temperature acquisition component, so that the temperature acquisition component can collect the battery core 100 temperature, each battery module can be equipped with multiple temperature acquisition components to cover the highest and lowest temperatures of the cells 100 in the battery module.
  • the voltage acquisition component is also connected to the connecting piece through the acquisition harness and nickel sheet. , the voltage corresponding to the battery core 100 can be collected through the voltage collection component.
  • One end of the CCS component 600 is provided with a lead-out connector 610, which is connected to the connecting piece.
  • a protective cover 240 is provided at a corresponding position on the end plate 200. The protective cover 240 is buckled on the lead-out connector 610 for protection.
  • the battery module also includes an upper cover 700.
  • the upper cover 700 is buckled above the CCS component 600, and the edge of the upper cover 700 is connected to the battery pack.
  • the upper cover 700 is made of engineering plastic (PC) material, and the upper cover 700 can completely cover the CCS component 600 to provide electrical isolation and protection.
  • PC is an amorphous thermoplastic resin with excellent comprehensive properties. It has excellent electrical insulation, extensibility, dimensional stability and chemical corrosion resistance, high strength, heat resistance and cold resistance. It also has self-extinguishing, It has the advantages of flame retardant, non-toxic, colorable, easy production and processing, and low price, which helps reduce costs.
  • the battery pack 800 includes a battery box and the above-mentioned battery module.
  • the battery module is arranged in the battery box, and the battery module is fixed to the battery through a fixing member 820. on the bottom of the box. Since the battery module is lighter in weight, the overall weight of the battery pack 800 is also lighter, which increases the energy density of the battery pack 800 and the assembly efficiency of the battery pack 800 is higher.
  • the fixing members 820 can be bolts and nuts.
  • the battery box includes a bottom guard 850 and side plates (not shown in the figure).
  • the bottom guard 850 and the side plates enclose a cavity for installing the battery module.
  • the guard plate 850 is provided with a crossbeam 810.
  • the crossbeam 810 is provided with a through hole corresponding to the position of the fixing hole 230 of the battery module.
  • the bolt passes through the fixing hole 230 and the through hole and is threadedly connected with the nut to fix the battery module to the crossbeam 810. superior.
  • a liquid cooling plate 830 and an insulation layer 840 are provided between the bottom protection plate 850 and the battery module.
  • the liquid cooling plate 830 is arranged to fit the bottom of the battery module, and the insulation layer 840 is arranged below the liquid cooling plate 830.
  • the liquid cooling plate 830 can cool down the battery module, and the insulation layer 840 is made of foam 500.
  • the foam 500 plays the dual roles of support and insulation, and can protect the bottom of the battery module, forming an effective protective effect.
  • the battery module includes a battery pack, an end plate and a fixed belt.
  • the end plates are arranged on both sides of the battery pack.
  • the end plates are provided with avoidance grooves.
  • the fixed belt is embedded in the avoidance groove.
  • the end plate and the battery pack can be bundled and fixed with fixing straps. Since the fixing strap is light in weight, the way of fixing the battery pack and end plate with the fixing strap effectively reduces the weight of the battery module, which is beneficial to improving the energy density of the battery module.
  • the fixing effect is good and the assembly process is simple. .
  • the present application provides a battery pack, which includes a battery box and the above-mentioned battery module.
  • the battery module is arranged in the battery box, and the battery module is fixed on the bottom plate of the battery box through a fixing member. Since the battery module is lighter in weight, the overall weight of the battery pack is also lighter, which improves the energy density of the battery pack and makes the assembly efficiency of the battery pack higher.

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

Abstract

本申请公开了一种电池模组，该电池模组包括电芯组、端板和固定带，端板设置在电芯组的两侧，端板上远离电芯组的一侧设有避让槽，固定带嵌设在避让槽内，固定带将端板与电芯组捆扎固定。

Description

电池模组及电池包
本申请要求在2022年7月26日提交中国专利局、申请号为2022219365958受理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，例如涉及一种电池模组及电池包。
背景技术
随着新能源汽车的逐渐普及，人们对新能源汽车的续航里程提出了更高的要求，在方形、软包和圆柱三种形状的电芯之中，方形电芯因具有高的机械强度和规则的形状因而较容易进行成组设计，通常将方形电芯首先进行堆叠，然后按照一定的预紧力将端板和侧板焊接到一起形成一个整体，电芯的大面积粘贴端板内表面，电芯的侧面粘贴侧板，然而这种结构设计方案，电池模组的装配过程较为繁琐，需要进行多次焊接，装配效率较低，且由于侧板具有一定的重量，电池包的能量密度较小。
因此，亟需一种电池模组及电池包，来解决上述问题。
发明内容
本申请提供一种电池模组及电池包，其结构简单，装配效率较高，且能量密度较高。
本申请采用以下技术方案：
一方面，本申请提供一种电池模组，该电池模组包括：
电芯组，包括多个依次排列的电芯；
端板，所述端板设置在所述电芯组的两侧，所述端板上远离所述电芯组的一侧设有避让槽；
固定带，所述固定带嵌设在所述避让槽内，所述固定带将所述端板与所述电芯组捆扎固定。
另一方面，本申请提供一种电池包，包括电池箱、以及上述任一方案中的电池模组，所述电池模组设置在所述电池箱内，所述电池模组通过固定件固定在所述电池箱的底板上。
附图说明
图1是本申请实施例中提供的电池模组的爆炸图；
图2是本申请实施例中提供的组装后电池模组的结构示意图；
图3是图2中A处的局部放大图；
图4是本申请实施例中提供的端板的结构示意图；
图5是本申请实施例中提供的电池包的结构示意图。
图中：
100、电芯；200、端板；210、加强筋；220、避让槽；230、固定孔；240、保护罩；300、固定带；310、钢带；320、PET带；400、绝缘片；500、泡棉；600、CCS组件；610、引出接头；700、上盖；800、电池包；810、横梁；820、固定件；830、液冷板；840、保温层；850、底护板。
具体实施方式
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。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。
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，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”仅仅用于在描述上加以区分，并没有特殊的含义。
如图1-图3所示，本实施例提供一种电池模组，该电池模组包括电芯组、端板200和固定带300，电芯组包括若干依次排列的电芯100，若干电芯100沿电池模组的长度方向依次设置，端板200设置在电芯组的两侧，端面的一个侧面与电芯组连接，端板200上远离电芯组的另一个侧面上设有避让槽220，固定带300嵌设在避让槽220内，通过固定带300能够将端板200与电芯组捆扎固定。通过避让槽220的设置，避免了固定带300发生移位，保证了 固定带300固定端板200和电芯组的可靠性，固定效果良好。例如，本实施例中的电芯组内的电芯100为方形电芯，例如可以是磷酸铁锂电芯，也可以是三元电芯，其表面包覆有一层蓝色绝缘膜，是电池模组的主要能量来源。
作为一种示例方案，本实施例中的端板200上远离电芯组的一侧设有加强筋210，加强筋210的边缘与端板200的边缘之间设有过渡面，避让槽220设置在过渡面上，加强筋210包括横筋和纵筋，横筋与纵筋之间互相连接，形成网格状的加强筋210，有效地提高了端板200的机械强度和抗弯能力，能够承受较大的外力，不易发生变形，另外，加强筋210的设置也能够相应减轻端板200的重量，以提高电池模组的能量密度。
例如，为了保证电芯组与端板200之间，以及电芯组与固定带300之间的绝缘性能良好，端板200与电芯组之间、以及电芯组与固定带300之间设有绝缘片400，通过绝缘片400的设置能够起到良好的绝缘效果，有效的避免短路的情况，另外，电芯组与固定带300之间的绝缘片400还能够对电芯组起到保护的作用，避免固定带300与电芯100直接接触造成电芯100外层绝缘膜的损坏。在一些实施例中，绝缘片400可以通过结构胶粘接的方式固定在电芯100上，组装简单，且固定效果良好。
作为一种示例方案，电芯组内的相邻两个电芯100之间均设有泡棉500，通过泡棉500可以吸收电芯100与端板200之间的安装公差，实现电池模组的精准安装，另外，泡棉500在电池模组使用的后期，能够吸收电芯100变形所产生的膨胀力，避免对固定带300产生较大的应力。在一些实施例中，泡棉500可以设置为条形，每两个相邻的电芯100之间设置有两条泡棉500，其中，一条泡棉500设置在电芯100端面的顶部位置，另一条泡棉500设置在电芯100端面的底部位置，两条泡棉500可通过表面背胶粘贴在电芯100的端面上。在一些实施例中，相邻的两个电芯100的端面上均涂覆有结构胶，且结构较的涂覆面积占电芯100端面面积的90％以上，结构胶的涂覆区域位于两条泡棉500之间，通过结构胶的设置，方便对电芯100进行定位，固定效果良好。
示例性地，泡棉500可以采用聚丙烯多孔发泡(Microcellular Polypropylene，MPP)材料或聚丙烯塑料发泡(Expanded Polypropylene，EPP)材料制成，MPP材料或EPP材料内部均具有大量的微小泡孔存在，具有优异的减震、缓冲、隔热和吸声等性能，并且能够回收再利用，或进行自然降解，不会造成白色污染，环保性良好。
继续参见图3，每个端板200上设有若干避让槽220，每两个避让槽220为一组，每组避让槽220内嵌设一条固定带300。固定带300包括钢带310和PET带320，钢带310和PET带320分别对应一组避让槽220设置，其中钢带310采用SUS201或者其他高强度钢材制成，钢带310是束缚电芯100和端板200形成预紧力的主要部件，钢带310的抗拉性能良好，在 电池模组组装完成后能够提供足够的强度，保证电池模组的固定效果良好，其边上设计有绝缘层，用于防止钢带310与电芯100之间摩擦产生绝缘故障。绝缘层可以是橡胶类材料，也可以是其他绝缘性材料。PET(Polyethylene terephthalate)带320采用工程塑料(聚对苯二甲酸乙二醇酯)制成，由于工程塑料的重量较轻，能够进一步减轻整个电池模组的重量，以进一步提高电池模组的能量密度。
为了保证固定带300能够完全嵌设在避让槽220内，本实施例中避让槽220的深度大于固定带300的厚度，避让槽220的宽度大于固定带300的宽度，即钢带310的厚度，以及PET带320的厚度均小于避让槽220的深度，钢带310宽度，以及PET带320的宽度均小于避让槽220的宽度。
例如，参见图4，本实施例的端板200上设有固定孔230，固定孔230贯穿加强筋210设置，固定孔230的设置是为了方便电池模组安装在电池箱内。固定孔230的数量可以根据整个电池模组的重量来设计，本实施例中固定孔230设置为四个。作为一种示例方案，固定孔230可以设置为椭圆形，从而适应电池模组的安装公差。
继续参见图1，本实施例中的电池模组包括采集集成件(Cells Contact System，CCS)组件600，CCS组件600设置在电芯组上方，CCS组件600与电芯组连接。CCS组件600包括若干互相连接的连接片，塑胶支架、温度采集部件以及电压采集部件，连接片、温度采集部件以及电压采集部件均设置在塑胶支架上，连接片与电芯组内的若干电芯100的极柱连接，通过连接片能够将相邻的电芯100串联，连接片上焊接有镍片，镍片的另一端与温度采集部件的采集线束连接，从而温度采集部件能够采集到电芯100的温度，每个电池模组内可以设置有多个温度采集部件，以覆盖采集到电池模组内电芯100的最高温度和最低温度，电压采集部件也通过采集线束和镍片与连接片连接，通过电压采集部件能够采集到对应电芯100的电压。CCS组件600的一端设有引出接头610，引出接头610与连接片连接，端板200上的对应位置设有保护罩240，保护罩240扣设在引出接头610上，起到保护的作用。
电池模组还包括上盖700，上盖700扣设在CCS组件600上方，且上盖700的边缘与电芯组连接。在一些实施例中，上盖700采用工程塑料(PC)材料制成，上盖700可以完全覆盖CCS组件600，从而起到电气隔离以及防护的作用。PC是一种综合性能优良的非晶型热塑性树脂，具有优异的电绝缘性、延伸性、尺寸稳定性及耐化学腐蚀性，较高的强度、耐热性和耐寒性，还具有自熄、阻燃、无毒、可着色等优点，生产、加工容易，且价格低廉，有利于降低成本。
本实施例还提供一种电池包800，如图5所示，该电池包800包括电池箱、以及上述电池模组，电池模组设置在电池箱内，电池模组通过固定件820固定在电池箱的底板上。由于 电池模组的重量较轻，从而电池包800的整体重量也较轻，提高了电池包800的能量密度，且电池包800的组装效率较高。
示例性地，固定件820可以选用螺栓和螺母，该电池箱包括底护板850和侧板(图中未示出)，底护板850和侧板围成安装电池模组的腔体，底护板850上设置有横梁810，横梁810上对应电池模组的固定孔230的位置设有通孔，螺栓穿过固定孔230和通孔后与螺母螺纹连接，使电池模组固定在横梁810上。
例如，底护板850与电池模组之间还设有液冷板830和保温层840，液冷板830贴合电池模组的底部设置，保温层840设置在液冷板830的下方，通过液冷板830可以对电池模组进行降温，保温层840选用泡棉500制成，此时泡棉500起到支撑和保温的双重作用，能够保护电池模组的底部，形成有效的防护作用。
本申请提供一种电池模组，该电池模组包括电芯组、端板和固定带，端板设置在电芯组的两侧，端板上设有避让槽，固定带嵌设在避让槽内，通过固定带能够将端板与电芯组捆扎固定。由于固定带的重量较轻，因此通过固定带来固定电芯组和端板的方式有效地减轻了电池模组的重量，有利于提高电池模组的能量密度，且固定效果良好，装配过程简单。
另一方面，本申请提供一种电池包，包括电池箱、以及上述电池模组，电池模组设置在电池箱内，电池模组通过固定件固定在电池箱的底板上。由于电池模组的重量较轻，从而电池包的整体重量也较轻，提高了电池包的能量密度，且电池包的组装效率较高。

Claims (20)

  1. 一种电池模组，包括：
    电芯组，包括多个依次排列的电芯(100)；
    端板(200)，所述端板(200)设置在所述电芯组的两侧，所述端板(200)上远离所述电芯组的一侧设有避让槽(220)；
    固定带(300)，所述固定带(300)嵌设在所述避让槽(220)内，所述固定带(300)将所述端板(200)与所述电芯组捆扎固定。
  2. 根据权利要求1所述的电池模组，其中，所述端板(200)上远离所述电芯组的一侧设有加强筋(210)，所述加强筋(210)的边缘与所述端板(200)的边缘之间设有过渡面，所述避让槽(220)设置在所述过渡面上，所述端板(200)上设有固定孔(230)，所述固定孔(230)贯穿所述加强筋(210)设置。
  3. 根据权利要求1所述的电池模组，其中，所述端板(200)与所述电芯组之间设有绝缘片(400)，所述电芯组与所述固定带(300)之间设有绝缘片(400)。
  4. 根据权利要求1所述的电池模组，其中，所述端板(200)上设有多个避让槽(220)，每两个避让槽(220)为一组，每组避让槽(220)内嵌设一条所述固定带(300)。
  5. 根据权利要求4所述的电池模组，其中，所述固定带(300)包括钢带(310)和PET带(320)，所述钢带(310)和所述PET带(320)分别对应一组所述避让槽(220)设置。
  6. 根据权利要求1所述的电池模组，其中，所述电芯组内的相邻两个所述电芯(100)之间分别设有泡棉(500)，所述泡棉(500)呈条形。
  7. 根据权利要求1所述的电池模组，其中，所述电池模组包括CCS组件(600)，所述CCS组件(600)设置在所述电芯组上方，所述CCS组件(600)与所述电芯组连接。
  8. 根据权利要求7所述的电池模组，其中，所述CCS组件(600)的一端设有引出接头(610)，所述端板(200)上的对应位置设有保护罩(240)，所述保护罩(240)扣设在所述引出接头(610)上。
  9. 根据权利要求8所述的电池模组，还包括上盖(700)，所述上盖(700)扣设在所述CCS组件(600)上方，且所述上盖(700)的边缘与所述电芯组连接。
  10. 根据权利要求2所述的电池模组，其中，所述电池模组包括CCS组件(600)，所述CCS组件(600)设置在所述电芯组上方，所述CCS组件(600)与所述电芯组连接。
  11. 根据权利要求3所述的电池模组，其中，所述电池模组包括CCS组件(600)，所述CCS组件(600)设置在所述电芯组上方，所述CCS组件(600)与所述电芯组连接。
  12. 根据权利要求4所述的电池模组，其中，所述电池模组包括CCS组件(600)，所述CCS组件(600)设置在所述电芯组上方，所述CCS组件(600)与所述电芯组连接。
  13. 根据权利要求5所述的电池模组，其中，所述电池模组包括CCS组件(600)，所述 CCS组件(600)设置在所述电芯组上方，所述CCS组件(600)与所述电芯组连接。
  14. 根据权利要求6所述的电池模组，其中，所述电池模组包括CCS组件(600)，所述CCS组件(600)设置在所述电芯组上方，所述CCS组件(600)与所述电芯组连接。
  15. 一种电池包，包括电池箱和电池模组，
    所述电池模组包括：电芯组，包括多个依次排列的电芯(100)；端板(200)，所述端板(200)设置在所述电芯组的两侧，所述端板(200)上远离所述电芯组的一侧设有避让槽(220)；固定带(300)，所述固定带(300)嵌设在所述避让槽(220)内，所述固定带(300)将所述端板(200)与所述电芯组捆扎固定；
    所述电池模组设置在所述电池箱内，所述电池模组通过固定件(820)固定在所述电池箱的底板上。
  16. 根据权利要求11所述的电池包，其中，所述端板(200)上远离所述电芯组的一侧设有加强筋(210)，所述加强筋(210)的边缘与所述端板(200)的边缘之间设有过渡面，所述避让槽(220)设置在所述过渡面上，所述端板(200)上设有固定孔(230)，所述固定孔(230)贯穿所述加强筋(210)设置。
  17. 根据权利要求11所述的电池包，其中，所述端板(200)与所述电芯组之间设有绝缘片(400)，所述电芯组与所述固定带(300)之间设有绝缘片(400)。
  18. 根据权利要求11所述的电池包，其中，所述端板(200)上设有多个避让槽(220)，每两个避让槽(220)为一组，每组避让槽(220)内嵌设一条所述固定带(300)。
  19. 根据权利要求14所述的电池包，其中，所述固定带(300)包括钢带(310)和PET带(320)，所述钢带(310)和所述PET带(320)分别对应一组所述避让槽(220)设置。
  20. 根据权利要求11所述的电池包，其中，所述电芯组内的相邻两个所述电芯(100)之间分别设有泡棉(500)，所述泡棉(500)呈条形。
PCT/CN2022/114485 2022-07-26 2022-08-24 电池模组及电池包 WO2024021209A1 (zh)

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