WO2020133744A1 - 电池模组 - Google Patents

电池模组 Download PDF

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Publication number
WO2020133744A1
WO2020133744A1 PCT/CN2019/079230 CN2019079230W WO2020133744A1 WO 2020133744 A1 WO2020133744 A1 WO 2020133744A1 CN 2019079230 W CN2019079230 W CN 2019079230W WO 2020133744 A1 WO2020133744 A1 WO 2020133744A1
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WO
WIPO (PCT)
Prior art keywords
battery module
end plate
output electrode
longitudinal direction
connecting piece
Prior art date
Application number
PCT/CN2019/079230
Other languages
English (en)
French (fr)
Inventor
唐彧
周灵刚
李子源
王鹏
游凯杰
陈兴地
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP19903851.4A priority Critical patent/EP3886205B1/en
Publication of WO2020133744A1 publication Critical patent/WO2020133744A1/zh
Priority to US17/355,761 priority patent/US12027719B2/en

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Classifications

    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • 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
    • 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
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to the technical field of batteries, in particular to a battery module.
  • the battery module usually includes a plurality of batteries, end plates provided at both ends of the plurality of batteries, a plurality of electrical connection pieces connecting the plurality of batteries in series and parallel, and an output electrode connection piece electrically connecting the plurality of batteries to an external device .
  • a plurality of batteries usually includes a plurality of batteries, end plates provided at both ends of the plurality of batteries, a plurality of electrical connection pieces connecting the plurality of batteries in series and parallel, and an output electrode connection piece electrically connecting the plurality of batteries to an external device .
  • it is usually necessary to install the output pole base on the end plate, and then fix the output pole connecting piece through the output pole base.
  • the output electrode base and the end plate are two separate components, they need to be installed together, and an installation structure and a guide structure that cooperate with the output electrode base need to be added to the end plate, thereby not only increasing manufacturing and assembly
  • the process reduces the grouping efficiency of the battery module, increases the weight of the battery module (more components), and reduces the energy density of the battery module.
  • an object of the present invention is to provide a battery module that reduces the number of components of the battery module, simplifies the manufacturing and installation process, and improves the grouping efficiency of the battery module.
  • the present invention provides a battery module, which includes a plurality of batteries, an end plate, and an output electrode connecting piece. Multiple batteries are arranged in the longitudinal direction.
  • the end plate has a main body portion located on one side of the plurality of batteries in the longitudinal direction, and an extension portion formed on the main body portion and extending in a direction away from the battery in the longitudinal direction.
  • the output electrode connecting piece has: a first connecting part connected to the corresponding battery; and a second connecting part connected to one end of the first connecting part and fixed to the extension part of the end plate.
  • the second connection portion extends downward in the up-down direction and is located outside the extension portion in the longitudinal direction.
  • the second connection portion of the output electrode connecting piece is fixed to the extension portion of the end plate through a fastening assembly.
  • the fastening assembly includes: a connecting piece; and a fitting piece, which cooperates with the connecting piece to fix the second connecting part of the output electrode connecting piece to the extension part of the end plate.
  • the fitting is embedded in the extension of the end plate, and the fitting is provided with a connecting hole.
  • the head of the connecting member is located outside the second connecting portion of the output electrode connecting piece in the longitudinal direction, and the tail portion is fixedly connected to the fitting through the connecting hole.
  • the mating piece protrudes in the longitudinal direction beyond the extending portion, so that the second connection portion of the output pole connecting piece abuts the end face of the mating piece.
  • the outer peripheral surface of the fitting is provided with protrusions and/or grooves that engage with the extension.
  • the extending portion is provided with a limiting slot, the head of the connecting member is fixed in the limiting slot, and the tail extends out of the second connecting portion of the output electrode connecting piece to be fixedly connected with the mating member.
  • the connecting piece is a hexagon head bolt, and the inner circumferential surface of the limit groove is formed into a hexagon head shape.
  • the battery module further includes: an adapter piece, and a second connection portion fixedly connected to the output electrode connection piece through a fastening component.
  • the second connection part of the output electrode connecting piece is directly fixed on the extension part of the end plate (that is, the extension part provides a supporting force for fixing the output electrode connecting piece), there is no need to additionally provide an output electrode base for installing the output electrode connecting piece.
  • the weight of the battery module is reduced and the energy density of the battery module is improved.
  • FIG. 1 is an exploded perspective view of an embodiment of the battery module of the present invention.
  • FIG. 2 is an assembled view of FIG. 1, in which the battery is omitted.
  • FIG. 3 is a schematic view of the fitting and end plate of FIG. 1.
  • Fig. 4 is an exploded view of Fig. 3.
  • FIG. 5 is an exploded perspective view of the battery module of the present invention in another embodiment.
  • FIG. 6 is an assembled view of FIG. 5, in which the battery is omitted.
  • FIG. 7 is a perspective view of the end plate in FIG. 5.
  • Fig. 8 is a perspective view of a connector.
  • first and second are used only for the purpose of description and cannot be understood as indicating or implying relative importance; the term “multiple” is Refers to two or more; unless otherwise specified or stated, the terms “connected” and “fixed” should be understood in a broad sense, for example, “connected” may be a fixed connection, detachable connection, or integrally connected , Or electrical connection, or signal connection; “connection” can be directly connected, or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.
  • the battery module of the present application includes a plurality of batteries 1, an end plate 2, an output electrode connecting piece 3, a fastening assembly 4 and an adapter piece 5.
  • the plurality of batteries 1 are arranged along the longitudinal direction Y, and are electrically connected together through electrical connection pieces (not shown).
  • the end plate 2 has: a body portion 21 located on the side of the plurality of batteries 1 in the longitudinal direction Y; and an extension portion 22 formed on the body portion 21 and extending in the longitudinal direction Y away from the battery 1 .
  • the number of the end plates 2 is two, and the two end plates 2 are respectively located on both sides of the plurality of batteries 1 in the longitudinal direction Y, and clamp and fix the plurality of batteries 1 together.
  • the end plate 2 may be injection molded from an insulating material (such as plastic).
  • the end plate 2 is made of polyamide and glass fiber. Based on the material of the end plate 2, the insulation requirements between the end plate 2 and the battery 1 are met, so when assembling the battery module, there is no need to additionally provide an insulating film between the end plate 2 and the battery 1, thereby simplifying the battery module Assembly process.
  • the body portion 21 of the end plate 2 may be formed as a staggered truss structure, and the extension portion 22 may be formed as a cylindrical structure.
  • the end plate 2 of this structure not only saves material, but also improves the strength of the end plate 2.
  • the output electrode connecting piece 3 electrically connects the plurality of batteries 1 with an external device (such as another battery module) through an adapter piece 5.
  • the output electrode connection piece 3 has: a first connection portion 31 connected to the corresponding battery 1; and a second connection portion 32 connected to the first connection portion 31 And the second connecting portion 32 is used to connect with an external device.
  • the output electrode base of 3 reduces the number of components of the battery module, simplifies the manufacturing and installation process, and improves the grouping efficiency of the battery module. At the same time, due to the small number of components of the battery module, the weight of the battery module is reduced and the energy density of the battery module is improved.
  • the second connection portion 32 of the output electrode connection piece 3 may extend downward in the up-down direction Z and be located outside the extension portion 22 in the longitudinal direction Y.
  • the output electrode connecting piece 3 can be formed into an L-shaped structure.
  • the second connecting portion 32 is installed on the side of the end plate 2 in the longitudinal direction Y, it can make full use of the space outside the end plate 2, thereby effectively reducing the space occupation of the output electrode connecting piece 3 in the vertical direction Z and improving The energy density of the battery module.
  • the number of output pole connecting pieces 3 may be two.
  • the two output electrode connecting pieces 3 are located at the same end of the plurality of batteries 1 in the longitudinal direction Y, and the extension portions 22 of one end plate 2 are identical in number to the output electrode connecting pieces 3, each The second connecting portion 32 of the output pole connecting piece 3 is fixed to a corresponding extension 22 of the end plate 2.
  • the two output electrode connecting pieces 3 are respectively located at both ends of the plurality of batteries 1 in the longitudinal direction Y, and the second connecting portion 32 of each output electrode connecting piece 3 is fixed to a corresponding end plate 2 ⁇ 22 ⁇ The extension 22.
  • the fastening assembly 4 includes: a connecting piece 41; and a fitting piece 42 that cooperates with the connecting piece 41 to fix the second connecting portion 32 of the output pole connecting piece 3 to the end The extension 22 of the plate 2.
  • the connecting member 41 may be a bolt
  • the matching member 42 is a nut.
  • the fitting 42 is embedded in the extension 22 of the end plate 2 (that is, the injection material of the end plate 2 is molded by the fitting 42 and the fitting 42 is provided with a connecting hole 421.
  • the head portion 411 of the connecting member 41 is located outside the second connecting portion 32 of the output electrode connecting piece 3 in the longitudinal direction Y, and the tail portion 412 is fixedly connected to the fitting 42 through the connecting hole 421.
  • the outer peripheral surface of the fitting 42 may be provided with protrusions 423 and/or grooves 424 that engage with the extension 22 of the end plate 2 as shown in FIG. 4 As shown.
  • the protrusion 423 may be formed as a zigzag structure.
  • the mating member 42 is provided to protrude from the extension 22 in the longitudinal direction Y.
  • the second connecting portion 32 of the output electrode connecting piece 3 directly abuts the end surface 422 of the fitting 42.
  • the end surface 422 of the fitting 42 may exceed the end surface of the extension 22 by 0.5 mm.
  • the extension portion 22 of the end plate 2 is provided with a limiting groove 221.
  • the head portion 411 of the connecting member 41 is fixed in the limiting groove 221, and the tail portion 412 extends out of the second connecting portion 32 of the output electrode connecting piece 3 to be fixedly connected with the mating member 42.
  • the limiting groove 221 limits the rotation of the connecting member 41 in the axial direction, so that the mating member 42 can smoothly cooperate with the connecting member 41 to connect the output pole connecting piece 3
  • the second connection portion 32 is fixed to the extension portion 22 of the end plate 2.
  • the connecting member 41 is a hexagon head bolt, and the inner circumferential surface of the limiting groove 221 is formed in a hexagon head shape.
  • the adapter piece 5 is fixedly connected to the second connection portion 32 of the output electrode connection piece 3 through the fastening assembly 4.

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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)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本发明提供了一种电池模组，其包括多个电池、端板以及输出极连接片。多个电池沿纵向排列。端板具有：主体部，沿纵向位于所述多个电池一侧；以及延伸部，形成于主体部并沿纵向向远离电池的方向延伸。输出极连接片，具有：第一连接部，连接于对应的电池；以及第二连接部，连接于第一连接部的一端并固定于端板的延伸部。由于输出极连接片的第二连接部直接固定在端板的延伸部上，从而无需额外设置安装输出极连接片的输出极底座，由此减少了电池模组的零部件数量，简化了制造及安装工序、提高了电池模组的成组效率。同时，由于电池模组的零部件数量少，降低了电池模组的重量、提高了电池模组的能量密度。

Description

电池模组 技术领域
本发明涉及电池技术领域，尤其涉及一种电池模组。
背景技术
电池模组通常包括多个电池、设置于所述多个电池两端的端板、将多个电池串并联的多个电连接片以及将所述多个电池电连接于外部装置的输出极连接片。目前，为了固定安装输出极连接片，通常需要在端板上安装输出极底座，然后再通过输出极底座固定安装输出极连接片。由于输出极底座与端板为两套独立的部件，二者之间需要配合安装，且还需要在端板上增加与输出极底座配合的安装结构以及导向结构，由此不仅增加了制造及装配工序、降低了电池模组的成组效率，还增大了电池模组的重量(部件较多)、降低了电池模组的能量密度。
发明内容
鉴于背景技术中存在的问题，本发明的目的在于提供一种电池模组，其减少了电池模组的零部件数量，简化了制造及安装工序、提高了电池模组的成组效率。
为了实现上述目的，本发明提供了一种电池模组，其包括多个电池、端板以及输出极连接片。多个电池沿纵向排列。端板具有：主体部，沿纵向位于所述多个电池一侧；以及延伸部，形成于主体部并沿纵向向远离电池的方向延伸。输出极连接片，具有：第一连接部，连接于对应的电池；以及第二连接部，连接于第一连接部的一端并固定于端板的延伸部。
第二连接部沿上下方向向下延伸并在纵向上位于延伸部外侧。
输出极连接片的第二连接部通过紧固组件固定于端板的延伸部。
紧固组件包括：连接件；以及配合件，与连接件配合，以将输出极连接片的第二连接部固定于端板的延伸部。
配合件埋设于端板的延伸部，且配合件设置有连接孔。连接件的头部在纵向上位于输出极连接片的第二连接部外侧、而尾部通过连接孔与配合件固定连接。
配合件在纵向上突出于延伸部，以使输出极连接片的第二连接部抵靠在配合件的端面上。
配合件的外周面设置有与延伸部咬合的凸起和/或凹槽。
延伸部设置有限位槽，连接件的头部固定于限位槽中、而尾部伸出输出极连接片的第二连接部以与配合件固定连接。
连接件为六角头螺栓，限位槽的内周面形成为六角头状。
电池模组还包括：转接片，通过紧固组件固定连接于输出极连接片的第二连接部。
本发明的有益效果如下：
由于输出极连接片的第二连接部直接固定在端板的延伸部上(即延伸部为输出极连接片的固定提供支撑力)，从而无需额外设置安装输出极连接片的输出极底座，由此减少了电池模组的零部件数量，简化了制造及安装工序、提高了电池模组的成组效率。同时，由于电池模组的零部件数量少，降低了电池模组的重量、提高了电池模组的能量密度。
附图说明
图1是本发明的电池模组在一实施例中的立体分解图。
图2是图1的组装图，其中省去了电池。
图3是图1中的配合件与端板的安装示意图。
图4是图3的分解图。
图5是本发明的电池模组在另一实施例中的立体分解图。
图6是图5的组装图，其中省去了电池。
图7是图5中的端板的立体图。
图8是连接件的立体图。
其中，附图标记说明如下：
1电池     412尾部
2端板   42配合件
  21主体部          421连接孔
  22延伸部          422端面
    221限位槽       423凸起
3输出极连接片       424凹槽
  31第一连接部   5转接片
  32第二连接部   X横向
4紧固组件        Y纵向
  41连接件       Z上下方向
    411头部
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
在本申请的描述中，除非另有明确的规定和限定，术语“第一”、“第二”仅用于描述的目的，而不能理解为指示或暗示相对重要性；术语“多个”是指两个或两个以上；除非另有规定或说明，术语“连接”、“固定”均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接，或电连接，或信号连接；“连接”可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本说明书的描述中，需要理解的是，本申请实施例所描述的“上”、“下”、“头”、“尾”、等方位词是以附图所示的角度来进行描述的，不应理解为对本申请实施例的限定。此外，在上下文中，还需要理解的是，当提到一个元件连接在另一个元件“上”或者“下”时，其不仅能够直接连接在另一个元件“上”或者“下”，也可以通过中间元件间接连接在另一个元件“上”或者“下”。下面通过具体的实施例并结合附图对本申请做进一步的详细描述。
参照图1和图5，本申请的电池模组包括多个电池1、端板2、输出极连接片3、紧固组件4以及转接片5。
参照图1和图5，所述多个电池1沿纵向Y排列，并通过电连接片(未示出)电连接在一起。
参照图1至图7，端板2具有：主体部21，沿纵向Y位于所述多个电池1一侧；以及延伸部22，形成于主体部21并沿纵向Y向远离电池1的方向延伸。端板2在数量上为两个，两个端板2在纵向Y上分别位于所述多个电池1两侧，并一起夹紧固定所述多个电池1。
端板2可由绝缘材料(如塑料)注塑成型。优选地，端板2由聚酰胺和玻璃纤维制成。基于端板2的材质，使得端板2与电池1之间满足绝缘需求，因而在组装电池模组时，无需在端板2与电池1之间额外设置绝缘膜，由此简化了电池模组的装配工艺。
端板2的主体部21可形成为交错的桁架结构、延伸部22可形成为圆柱体结构。这种结构的端板2不仅节省了材料，还提高了端板2的强度。
输出极连接片3通过转接片5将所述多个电池1与外部装置(如另一电池模组)电连接在一起。具体地，参照图1、图2、图5和图6，输出极连接片3具有：第一连接部31，连接于对应的电池1；以及第二连接部32，连接于第一连接部31的一端并通过紧固组件4固定于端板2的延伸部22，且第二连接部32用于与外部装置连接。
由于输出极连接片3的第二连接部32直接固定在端板2的延伸部22上(即延伸部22为输出极连接片3的固定提供支撑力)，从而无需额外设置安装输出极连接片3的输出极底座，由此减少了电池模组的零部件数量，简化了制造及安装工序、提高了电池模组的成组效率。同时，由于电池模组的零部件数量少，降低了电池模组的重量、提高了电池模组的能量密度。
参照图1、图2、图5和图6，输出极连接片3的第二连接部32可沿上下方向Z向下延伸并在纵向Y上位于延伸部22外侧。换句话说，输出极连接片3可形成为L型结构。
由于第二连接部32在纵向Y上安装在端板2的侧面，其能充分利用端板2外侧的空间，由此有效地减少了输出极连接片3在上下方向Z上的空间占用，提高了电池模组的能量密度。
输出极连接片3在数量上可为两个。在一实施例中，所述两个输出极连接片3在纵向Y上位于所述多个电池1同一端，其中一个端板2的延伸部 22在数量上与输出极连接片3一致，各输出极连接片3的第二连接部32固定于该端板2的对应一个延伸部22。在另一实施例中，所述两个输出极连接片3在纵向Y上分别位于所述多个电池1两端，各输出极连接片3的第二连接部32固定于对应一个端板2的延伸部22。
参照图1、图2、图5和图6，紧固组件4包括：连接件41；以及配合件42，与连接件41配合，以将输出极连接片3的第二连接部32固定于端板2的延伸部22。具体地，连接件41可为螺栓，配合件42为螺母。
在一实施例中，参照图1至图4，配合件42埋设于端板2的延伸部22(即端板2的注塑材料注塑于配合件42而成型)，且配合件42设置有连接孔421。连接件41的头部411在纵向Y上位于输出极连接片3的第二连接部32外侧、而尾部412通过连接孔421与配合件42固定连接。
为了在成型过程中，提高配合件42与端板2连接强度，配合件42的外周面可设置有与端板2的延伸部22互相咬合的凸起423和/或凹槽424，如图4所示。具体地，所述凸起423可形成为锯齿状结构。
由于配合件42的材质为金属、而端板2的材质为塑料。在连接件41与配合件42的连接过程中，为了避免输出极连接片3的第二连接部32直接抵靠并挤压延伸部22的端面而造成端板2的损坏，优选地，配合件42在纵向Y上突出于延伸部22设置。此时，输出极连接片3的第二连接部32直接抵靠在配合件42的端面422上。具体地，配合件42的端面422可超出延伸部22的端面0.5mm。
在另一实施例中，参照图5至图7，端板2的延伸部22设置有限位槽221。连接件41的头部411固定于限位槽221中、而尾部412伸出输出极连接片3的第二连接部32以与配合件42固定连接。
在配合件42与连接件41的连接过程中，由于限位槽221限定了连接件41沿轴向的转动，从而使得配合件42能够与连接件41顺利配合，以将输出极连接片3的第二连接部32固定于端板2的延伸部22。优选地，连接件41为六角头螺栓，限位槽221的内周面形成为六角头状。
参照图1、图2、图5和图6，转接片5通过紧固组件4与输出极连接片3的第二连接部32固定连接。

Claims (10)

  1. 一种电池模组，包括：
    多个电池(1)，沿纵向(Y)排列；
    端板(2)，具有：主体部(21)，沿纵向(Y)位于所述多个电池(1)一侧；以及延伸部(22)，形成于主体部(21)并沿纵向(Y)向远离电池(1)的方向延伸；以及
    输出极连接片(3)，具有：第一连接部(31)，连接于对应的电池(1)；以及第二连接部(32)，连接于第一连接部(31)的一端并固定于端板(2)的延伸部(22)。
  2. 根据权利要求1所述的电池模组，其特征在于，第二连接部(32)沿上下方向(Z)向下延伸并在纵向(Y)上位于延伸部(22)外侧。
  3. 根据权利要求1所述的电池模组，其特征在于，输出极连接片(3)的第二连接部(32)通过紧固组件(4)固定于端板(2)的延伸部(22)。
  4. 根据权利要求3所述的电池模组，其特征在于，紧固组件(4)包括：连接件(41)；以及配合件(42)，与连接件(41)配合，以将输出极连接片(3)的第二连接部(32)固定于端板(2)的延伸部(22)。
  5. 根据权利要求4所述的电池模组，其特征在于，
    配合件(42)埋设于端板(2)的延伸部(22)，且配合件(42)设置有连接孔(421)；
    连接件(41)的头部(411)在纵向(Y)上位于输出极连接片(3)的第二连接部(32)外侧、而尾部(412)通过连接孔(421)与配合件(42)固定连接。
  6. 根据权利要求5所述的电池模组，其特征在于，配合件(42)在纵向(Y)上突出于延伸部(22)，以使输出极连接片(3)的第二连接部(32) 抵靠在配合件(42)的端面(422)上。
  7. 根据权利要求4所述的电池模组，其特征在于，配合件(42)的外周面设置有与延伸部(22)咬合的凸起(423)和/或凹槽(424)。
  8. 根据权利要求4所述的电池模组，其特征在于，
    延伸部(22)设置有限位槽(221)；
    连接件(41)的头部(411)固定于限位槽(221)中、而尾部(412)伸出输出极连接片(3)的第二连接部(32)以与配合件(42)固定连接。
  9. 根据权利要求8所述的电池模组，其特征在于，连接件(41)为六角头螺栓，限位槽(221)的内周面形成为六角头状。
  10. 根据权利要求3所述的电池模组，其特征在于，电池模组还包括：转接片(5)，通过紧固组件(4)固定连接于输出极连接片(3)的第二连接部(32)。
PCT/CN2019/079230 2018-12-28 2019-03-22 电池模组 WO2020133744A1 (zh)

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