WO2019001302A1 - 一种电池串联片 - Google Patents

一种电池串联片 Download PDF

Info

Publication number
WO2019001302A1
WO2019001302A1 PCT/CN2018/091767 CN2018091767W WO2019001302A1 WO 2019001302 A1 WO2019001302 A1 WO 2019001302A1 CN 2018091767 W CN2018091767 W CN 2018091767W WO 2019001302 A1 WO2019001302 A1 WO 2019001302A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
ring piece
piece
shrapnel
battery tandem
Prior art date
Application number
PCT/CN2018/091767
Other languages
English (en)
French (fr)
Inventor
许玉林
龚晓冬
王爱淑
娄豫皖
顾江娜
张旭
许祎凡
Original Assignee
苏州安靠电源有限公司
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 苏州安靠电源有限公司 filed Critical 苏州安靠电源有限公司
Publication of WO2019001302A1 publication Critical patent/WO2019001302A1/zh

Links

Images

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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of battery technologies, and in particular, to a battery tandem chip.
  • Lithium-ion batteries are the most energy-efficient, long-life battery series in the world. What is more valuable is that it does not use toxic and harmful materials, is environmentally friendly, and has been used more and more widely. But it also has fundamental flaws, poor safety, and the danger of fire and explosion. Various research units and production plants have done a lot of work to improve their safety. The anode-free welding process of Suzhou Anyuan Power Supply Co., Ltd. is a successful example.
  • the cylindrical lithium ion battery module generally comprises a battery fixture with an insulating material and a plurality of battery insertion holes, a plurality of battery serial pieces respectively embedded in the respective battery insertion holes, and embedded in each battery insertion hole and each A series of battery cells connected in series are connected to each other and connected to a plurality of battery cells respectively inserted in respective battery insertion holes and connected to the corresponding battery series (direct contact connection or soldering).
  • the battery cells are connected in parallel with each other by means of the aforementioned parallel connection, and the series connection piece is connected in series with the battery cell inserted into the other side of the battery fixture, so that a plurality of battery modules are assembled together to form a large-capacity lithium. Ion battery.
  • the core of the negative electrode no-welding process is to replace the common thin metal connecting piece with a metal piece (battery series piece) with a plurality of claws, and a plurality of claws of the metal piece are hung on the battery case to realize contact electrical connection.
  • the conventional battery tandem sheet is composed only of the backsheet and a plurality of claws integrally provided around the backsheet, and in use, the battery case is held by the claws to realize the contact electrical connection. At least the following issues exist:
  • the structure of the claws on the tandem piece is not reasonable enough. It can not be well connected with the elastic connection of the battery fixture and the battery cell at the same time, and it is easy to cause the serial piece to fall off from the battery fixture or the battery and the serial piece to be detached. .
  • the purpose of the present application is: in view of the above problems, the present application proposes a battery tandem sheet having a large contact area with a battery, a large holding force to the battery, and a stable connection with the battery holder, and the battery tandem piece itself has a high structure. strength.
  • a battery tandem piece comprising an annular ring piece and a bottom piece fixedly connected at an axial bottom end of the ring piece, wherein the ring piece is formed with a plurality of outwardly protruding elastic pieces protruding radially outward and radially inwardly convex A number of inverted shrapnel.
  • the application further includes the following preferred solutions:
  • Each of the everted shrapnels is evenly spaced along the circumferential direction of the ring piece.
  • Each of the inverting elastic pieces is evenly spaced along the circumferential direction of the ring piece.
  • the eversion elastic piece and the inversion elastic piece are formed by punching the ring piece, and the two ends of the eversion elastic piece are integrally connected with the body structure of the ring piece, and the middle part of the eversion elastic piece is radially oriented. Externally protruding, both ends of the length of the inverting elastic piece are integrally connected with the body structure of the ring piece, and a central portion of the inversion elastic piece protrudes radially inward.
  • the number of the everted shrapnel and the inverting shrapnel are the same, and each of the everted shrapnel and each of the inversion shrapnel are alternately arranged with each other along a circumferential direction of the ring piece.
  • the axial end of the ring piece is formed with a plurality of battery insertion guide pieces spaced apart in the circumferential direction of the ring piece.
  • the ring piece and the back piece are in a split structure, and the two are welded and fixed together.
  • the bottom end of the ring piece is formed with a plurality of radially inwardly bent lower jaw pieces, and the lower claw piece is welded and fixed to the back piece.
  • Each of the lower jaw pieces is evenly spaced along the circumferential direction of the ring piece.
  • the battery tandem sheet is made of steel.
  • the battery tandem piece of the present application is provided with a plurality of everted shrapnels and a plurality of inverting shrapnels, a plurality of inverting shrapnels and a battery card are tightly connected, a plurality of contact points, a large conductive cross section, and a small electrical resistance.
  • a plurality of valgus shrapnel are snap-connected with the battery fixture, and the contact points are many, the conductive section and the heat transfer section are large, the resistance is small, and the heat transfer speed is fast.
  • the ring piece and the back piece of the battery serial piece of the present application are split welding structures, and the ring piece and the back piece are separately processed and produced, which is more convenient to manufacture.
  • the everted shrapnel and the inversion shrapnel are formed by punching the ring piece, and the length ends of the eversion shrapnel are integrally connected with the body structure of the ring piece, and only the middle part thereof protrudes radially outward. Both ends of the length of the inversion elastic piece are integrally connected with the body structure of the ring piece, and only the middle portion thereof protrudes radially inward. This ensures the structural integrity of the axial tip of the ring piece - the axial tip of the ring piece is a complete ring structure, thereby enhancing the overall structural strength of the ring piece.
  • the number of the eversion shrapnel and the inversion shrapnel are the same, and the two are alternately arranged in the circumferential direction to facilitate processing.
  • FIG. 1 is a general assembly diagram of a battery module in an embodiment of the present application.
  • FIG. 2 is an exploded view of a battery module in an embodiment of the present application
  • FIG. 3 is a schematic perspective structural view of a first viewing angle of an insulating bracket according to an embodiment of the present application
  • FIG. 4 is a schematic perspective structural view of a second viewing angle of an insulating bracket according to an embodiment of the present application.
  • FIG. 5 is a schematic perspective structural view of a parallel strip in the embodiment of the present application.
  • FIG. 6 is a schematic perspective structural view of a battery serial piece in the embodiment of the present application.
  • FIG. 7 is a schematic perspective structural view of a compression connecting block according to an embodiment of the present application.
  • 1-battery series 101-ring, 101a-overturned shrapnel, 101b-inverted shrapnel, 101c-battery insert guide, 101d-lower claw, 102-back, 102a-bump, 2- Battery unit, 3-insulated bracket, 301-bracket hole, 302-plug hole, 4-parallel strip, 401-parallel strip hole, 404-heat-dissipation strip, 5-pressing joint block, 501-press strip, 502-fixed Plug, 502a - deformation joint.
  • FIG. 7 show a specific application example of the battery tandem chip of the present application in a battery module, which is a cylindrical lithium ion battery module, which is the same as the conventional battery module.
  • a battery fixture also referred to as a battery holder in the industry.
  • the battery fixture is provided with a plurality of battery insertion holes arranged in a matrix, and each battery insertion hole is embedded with a battery serial piece 1 and each battery is inserted.
  • a cylindrical lithium ion battery cell 2 is inserted into the hole.
  • the negative end of the battery cell 2 is inserted into the battery insertion hole of the battery holder, and is directly in contact with the battery serial piece 1 in the battery insertion hole (not welded).
  • the above battery jig includes an insulating layer located on the lower layer and a conductive layer located on the upper layer.
  • the insulating layer is an approximately rectangular insulating bracket 3, and the insulating bracket 3 is provided with a plurality of bracket holes 301 distributed in a matrix.
  • the conductive layer 3 is composed of a plurality of parallel metal strips 4 arranged side by side and parallel to each other.
  • the metal parallel strips 4 are provided with a row of parallel strip holes spaced along the length direction of the metal parallel strips.
  • the metal parallel strip 4 is fixedly connected to the insulating bracket 3.
  • the bracket hole 301 and the parallel strip hole together form the battery insertion hole, and the battery serial piece 1 is elastically contacted with the hole wall of the parallel strip hole.
  • the above insulating bracket 3 is usually made of a plastic material.
  • the metal parallel strip 4 is an aluminum material with good electrical and thermal conductivity.
  • the battery series piece 1 is in contact connection with the hole wall of the metal parallel strip 4, and the battery series piece 1 is connected to the corresponding battery cell 2, so that the respective battery cells connected in the same metal parallel strip 4 are connected by the metal parallel strip 4
  • Parallel connection eliminates the need for a traditional parallel connection.
  • the metal parallel strip 4 is made of a metal material and has a certain thickness, it has good heat conduction and heat dissipation capability, and can quickly absorb and transfer heat of each battery cell 2, thereby greatly improving the battery module. Thermal performance.
  • the battery tandem sheet 1 is a steel material.
  • the ends of the metal parallel strips 4 have heat-dissipating strips 404 with a planar structure.
  • the heat-dissipating strips 404 are connected to external heat-dissipating mechanisms (such as the inner wall of the battery box) to absorb the heat. Pass out.
  • the heat-dissipating lead-out piece 404 adopts a flat-plate structure, so that when a plurality of battery modules of such a structure are combined in series and in parallel to form a large-capacity battery, the adjacent two battery modules are supported by the heat-dissipating lead pieces to ensure a large-capacity battery. Structural stability.
  • the outer contour of the insulating bracket 3 is rectangular, and after the assembly is completed, the heat dissipation lead piece 404 is arranged flush with the outer edge of the insulating bracket 3.
  • the battery cells 2 In order to further improve the heat dissipation performance of the battery module, it is preferable to connect the battery cells 2 to the hole walls of the parallel strip holes. Further, it is preferable to ensure that the thickness of the metal parallel strip 4 (i.e., the thickness in the axial direction of the parallel strip hole 401) is not less than 5 mm.
  • the respective metal parallel bars 4 constituting the conductive layer are electrically connected to each other. These metal parallel bars 4 are specifically electrically connected to each other in such a manner that the gap between the adjacent metal parallel bars 4 is filled with a conductive paste.
  • each of the metal parallel bars 4 is a monolithic structure, which is formed by sintering or fixing a plurality of metal pipes arranged in a row.
  • the ends of the metal parallel strips 4 have heat-dissipating strips 404 with a planar structure.
  • the heat-dissipating strips 404 are connected to external heat-dissipating mechanisms (such as the inner wall of the battery box) to absorb the heat. Pass out.
  • the heat-dissipating lead-out piece 404 adopts a flat-plate structure, so that when a plurality of battery modules of such a structure are combined in series and in parallel to form a large-capacity battery, the adjacent two battery modules are supported by the heat-dissipating lead pieces to ensure a large-capacity battery. Structural stability.
  • the metal parallel strips 4 and the insulating brackets 3 are fixedly connected together by pressing the connecting blocks 5.
  • the pressing connection block 5 includes an elongated bead 501 and a plurality of fixing plugs 502 connected to the same side of the bead and spaced apart along the length of the bead.
  • the insulating bracket 3 defines a plurality of plug holes 302. The fixing plug 502 is fixedly inserted into the plug hole 302 through the gap between the adjacent metal parallel bars 4, and the bead 501 is pressed on the upper portion of the metal parallel strip 4, thereby realizing the fixing of the metal parallel strip 4 and the insulating bracket 3. connection.
  • the head of the fixing plug 502 is a hemispherical structure, and the hemispherical structure is provided with at least one deformation slit 502a.
  • the diameter of the hemispherical structure is slightly larger than the aperture of the plug hole 302.
  • the deformation joint enables the hemispherical structure of the head of the fixed plug 502 to have a certain elastic deformation capability, thereby ensuring that the hemispherical structure of the head of the fixed plug 502 can be smoothly inserted into the plug hole, and the hemispherical structure is tightly coupled with the plug hole. Difficult to pull out.
  • the fixing plug 502 has an outer surface corresponding to the outer surface of the metal parallel strip 4 - a concave curved surface, so that the fixing plug can closely fit the metal parallel strip 4, and the fixing plug is just tightly supported in the adjacent two metals in parallel Between strips 4 to prevent the metal parallel strip 4 from shaking.
  • the pressing connecting block 5 is made of plastic material. Both the compression joint block 5 and the insulating bracket 3 are injection molded.
  • the battery tandem sheet 1 also adopts a completely new structural form, which includes an annular ring piece 101 and a backsheet 102 fixedly connected to the axial bottom end of the ring piece, and the ring piece 101 is formed around the ring piece 101.
  • a plurality of battery insertion guide pieces 101c are formed at the axially distal end of the ring piece 101, and these battery insertion guide pieces 101c are evenly spaced along the circumferential direction of the ring piece 101.
  • the flip-flop 101a is elastically coupled to the wall of the battery insertion hole
  • the inverting elastic piece 101b is elastically coupled to the negative end of the battery unit 2.
  • the battery insertion guide piece 101c is for guiding the negative end of the battery cell into the battery insertion hole.
  • the above-described everted shrapnel 101a and inverted shrapnel 101b are formed by punching of the ring piece 101, and the number of the everted shrapnel 101a and the inverted shrapnel 101b are the same.
  • Both ends of the length of the eversion elastic piece 101a are integrally connected with the body structure of the ring piece 101, and the central portion of the eversion elastic piece 101a protrudes radially outward.
  • Both ends of the length of the inversion elastic piece 101b are integrally connected with the body structure of the ring piece 101, and the central portion of the inversion elastic piece 101b protrudes radially inward.
  • radial refers to the ring piece 101 as a reference unless otherwise specified.
  • Each of the above-described everted shrapnels 101a is evenly spaced along the circumferential direction of the ring piece 101, and each of the above-described inverting elastic pieces 101b is also evenly spaced along the circumferential direction of the ring piece 101. Further, the plurality of everted shrapnels 101a and the plurality of inturning elastic pieces 101b are alternately arranged in the circumferential direction.
  • the ring piece 101 and the backsheet 102 of the battery tandem sheet 1 in this embodiment are of a split type welded structure, that is, the ring piece 101 and the back sheet 102 are not monolithic structures, and the two are fixedly connected by welding. Together. Specifically, the bottom end of the ring piece 101 is formed with a plurality of radially inwardly bent lower jaw pieces 101d, and the lower claw piece 101d is welded and fixed to the back piece 102. These lower claw pieces 101d are evenly spaced along the circumferential direction of the ring piece 101.
  • a plurality of battery modules as shown in FIG. 1 may be configured, and the upper end (positive end) of each battery cell 2 on one of the battery modules is inserted into the lower portion of the battery fixture on the other battery module, and The series connection of the battery fixtures on the other battery module (if necessary, the two can be soldered and fixed), thus achieving the series connection of the two battery modules.
  • a plurality of battery modules shown in FIG. 1 are combined in series and in parallel to form a large-capacity lithium ion battery.
  • Each of the battery cells 2 in the battery module of FIG. 1 is connected in parallel with each other by a metal parallel bar 4, and the battery cells are connected in series with the battery cells inserted into the other side of the battery fixture, thereby assembling a plurality of battery modules.
  • a large-capacity lithium-ion battery is formed.
  • a hole radially inwardly convex is formed at the hole wall of the bracket hole 301 on the insulating frame 3.
  • the flange (the bracket hole 301 has a smaller aperture at one end and a larger aperture at the other end, compared with FIG. 3 and FIG. 4), the flange is used to limit the battery cell and the battery series to prevent the battery serial sheet 1 from being subjected to the battery sheet. The axial force of the body 2 is released from the battery insertion hole.
  • the present embodiment punches a downwardly projecting projection 102a in the middle of the backsheet 102, the projection being circular so as to be inserted into the battery terminal (usually the positive terminal) and the projection below the battery holder of FIG. From 102a good contact.
  • the battery tandem sheet 1 can also be applied to a battery fixture of a conventional structure to form a battery module with a network connection.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请公开了一种电池串联片，其包括环形的环片以及固定连接在该环片轴向底端的底片，所述环片的四周形成有径向向外凸出的若干个外翻弹片以及径向向内凸出的若干个内翻弹片。本申请这种电池串联片本身具有很高的结构强度，其与电池接触面积大，对电池抱紧力强，且与电池夹具的结合稳固性高。

Description

一种电池串联片 技术领域
本申请涉及电池技术领域，具体涉及一种电池串联片。
背景技术
锂离子电池是当今世界上比能量最高，适用的条件宽广而使用寿命最长的电池系列。更可贵的是它不使用有毒有害的材料，对环境友善，得到了越来越广泛的应用。但是它也有根本的缺陷，安全性不好，有起火爆炸的危险。各研究单位和生产厂都做了大量工作改善其安全性。苏州安靠电源公司的负极免焊接工艺就是比较成功的一例。
圆柱形锂离子电池模组一般包括绝缘材质的且其上开设众多电池插装孔的电池夹具、分别嵌入各个电池插装孔中的众多电池串联片、同时嵌入各个电池插装孔中且与各个电池串联片接触连接的一张并联网、分别插设在各个电池插装孔中且与对应电池串联片相连(直接接触连接或焊接)的众多电池单体。实际应用时，这些电池单体依靠前述并联网相互并联，依靠前述串联片与插入电池夹具另一侧的电池单体实现串联，如此将将多个电池模组组装在一起而形成大容量的锂离子电池。
负极免焊接工艺的核心是用带有多个弹爪的金属片(电池串联片)代替通用的薄金属连接片，金属片的多个弹爪抱住电池壳，实现接触电连接。从而取消了对电池壳底的焊接，消除了焊接热对靠近底的内部核心构件的伤害，提高了安全性。
然而，传统电池串联片仅由底片以及一体设置在底片四周的众多弹爪构成，使用时，依靠弹爪抱住电池壳，实现接触电连接。至少存在以下问题：
1、仅仅依靠弹爪，对电池的抱紧力不足，而且二者接触面积较小，受到剧烈振动过程中弹爪和电池由脱开的风险。
2、串联片上弹爪的结构还不够合理，其不能够很好地同时与电池夹具和电 池单体的弹性紧压接触连接，容易出现串联片从电池夹具上脱落或者电池与串联片脱离的问题。
发明内容
本申请目的是：针对上述问题，本申请提出一种与电池接触面积大、对电池抱紧力大且与电池夹具能够稳固结合的电池串联片，并且该电池串联片自身也具有很高的结构强度。
本申请的技术方案是：
一种电池串联片，包括环形的环片以及固定连接在该环片轴向底端的底片，所述环片的四周形成有径向向外凸出的若干个外翻弹片以及径向向内凸出的若干个内翻弹片。
本申请在上述技术方案的基础上，还包括以下优选方案：
各个所述外翻弹片沿着所述环片的圆周方向均匀间隔分布。
各个所述内翻弹片沿着所述环片的圆周方向均匀间隔分布。
所述外翻弹片和内翻弹片通过对所述环片冲压而形成，所述外翻弹片的长度两端与所述环片的本体结构连为一体，所述外翻弹片的中部径向向外凸出，所述内翻弹片的长度两端与所述环片的本体结构连为一体，所述内翻弹片的中部径向向内凸出。
所述外翻弹片和所述内翻弹片的数量相同，并且各个所述外翻弹片和各个所述内翻弹片沿着所述环片的圆周方向彼此交替布置。
所述环片轴向顶端形成有若干个沿环片圆周方向间隔分布的电池插装导向片。
所述环片和所述底片为分体式结构，二者焊接固定在一起。
所述环片轴向底端形成有若干个径向向内折弯的下爪片，所述下爪片与所述底片焊接固定。
各个所述下爪片沿着所述环片的圆周方向均匀间隔分布。
所述电池串联片为钢质。
本申请的优点是：
1、本申请这种电池串联片上设置有多个外翻弹片和多个内翻弹片，多个内翻弹片和电池卡紧连接，接触点很多，导电截面大，电阻很小。多个外翻弹片与电池夹具卡接连接，接触点很多，导电截面和传热截面大，电阻很小，传热速度快。
2、本申请这种电池串联片的环片和底片为分体式焊接结构，环片和底片单独加工生产，制作更加方便。
3、外翻弹片和内翻弹片通过对环片冲压而形成，外翻弹片的长度两端与环片的本体结构连为一体，仅其中部径向向外凸出。内翻弹片的长度两端与环片的本体结构连为一体，仅其中部径向向内凸出。如此保证了环片轴向顶端的结构整体性——环片轴向顶端为完整的圆环结构，进而增强了环片的整体结构强度。
4、外翻弹片和内翻弹片的数量相同，且二者沿圆周方向彼此交替布置，方便加工。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例中电池模组的总装图；
图2为本申请实施例中电池模组的分解图；
图3为本申请实施例中绝缘支架第一视角的立体结构示意图；
图4为本申请实施例中绝缘支架第二视角的立体结构示意图；
图5为本申请实施例中并联条的立体结构示意图；
图6为本申请实施例中电池串联片的立体结构示意图；
图7为本申请实施例中压紧连接块的立体结构示意图；
其中：1-电池串联片，101-环片，101a-外翻弹片，101b-内翻弹片，101c-电池插装导向片，101d-下爪片，102-底片，102a-凸起，2-电池单体，3-绝缘支架，301-支架孔，302-塞孔，4-并联条，401-并联条孔，404-散热引出片，5-压紧连接块，501-压条，502-固定塞，502a-变形缝。
具体实施方式
以下结合具体实施例对上述方案做进一步说明。应理解，这些实施例是用于说明本申请而不限于限制本申请的范围。实施例中采用的实施条件可以根据具体厂家的条件做进一步调整，未注明的实施条件通常为常规实验中的条件。
本文中所说的上、下、左、右等指示方位的字词仅是针对所示结构在对应附图中位置而言。本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接(联接)。
图1至图7示出了本申请这种电池串联片在电池模组中的一个具体应用例，该电池模组为圆柱形的锂离子电池模组，其与传统电池模组相同的是，也包括电池夹具(行业内也称电池支架)，电池夹具上制有呈矩阵分布的众多电池插装孔，每个电池插装孔中均嵌设有一个电池串联片1，而且每个电池插装孔中均插设一颗圆柱形的锂离子电池单体2。具体的，本实施例中，电池单体2的负极端插设在电池夹具的电池插装孔中，并且与电池插装孔中的电池串联片1直接接触连接(未焊接)。
上述电池夹具包括位于下层的绝缘层和位于上层的导电层。其中：绝缘层 为近似矩形的绝缘支架3，该绝缘支架3上设置有呈矩阵分布的众多支架孔301。导电层3由众多并列布置且相互平行的金属并联条4构成，金属并联条4上设置有一排沿着金属并联条长度方向间隔分布的并联条孔。金属并联条4与绝缘支架3固定连接。支架孔301和并联条孔共同形成所述电池插装孔，电池串联片1与并联条孔的孔壁弹性接触连接。
上述绝缘支架3通常采用塑料材质。金属并联条4为导电和导热性能良好的铝质材料。
电池串联片1与金属并联条4的孔壁接触连接，而电池串联片1又与对应的电池单体2相连，如此使得连接在同一金属并联条4中的各个电池单体借助金属并联条4并联连接，从而省去了传统的并联网结构。而且，由于金属并联条4为金属材质且具有一定的厚度，其具有很好的导热和散热能力，能够快速吸收并向外传递各电池单体2的热量，从而大大提高了该电池模组的散热性能。
电池串联片1为钢质材料。
金属并联条4的长度两端部具带有一平面结构的散热引出片404，实际应用时将该散热引出片404与外界散热机构(比如电池箱的箱体内壁)相连，以将其吸收的热量向外传递出去。而且，散热引出片404采用平板状结构，使得多个这种结构的电池模组串并联组合在一起而构成大容量电池时，相邻两电池模组依靠散热引出片相互支撑，保证大容量电池的结构稳定性。
进一步地，上述绝缘支架3的外轮廓为矩形，装配完成后，上述散热引出片404与绝缘支架3的外缘边平齐布置。
为了进一步提升该电池模组的散热性能，最好将电池单体2与并联条孔的孔壁接触连接。而且最好保证金属并联条4的厚度(即在并联条孔401轴线方向的厚度)不小于5mm。
为了使得图1中连接在同一电池夹具上的各个电池单体均并联连接，本实施例中，构成所述导电层的各个金属并联条4相互电连接。这些金属并联条4 具体是以下述方式相互电连接的：在相邻金属并联条4之间的缝隙中填充有导电胶。
本实施例中，每一根金属并联条4均为一整体式结构，其由成排布置的多个金属管烧结固定或者焊接固定而成。
金属并联条4的长度两端部具带有一平面结构的散热引出片404，实际应用时将该散热引出片404与外界散热机构(比如电池箱的箱体内壁)相连，以将其吸收的热量向外传递出去。而且，散热引出片404采用平板状结构，使得多个这种结构的电池模组串并联组合在一起而构成大容量电池时，相邻两电池模组依靠散热引出片相互支撑，保证大容量电池的结构稳定性。
本实施例中，所述金属并联条4与绝缘支架3是通过压紧连接块5固定连接在一起的。具体地，所述压紧连接块5包括长条形的压条501以及连接在该压条同一侧且沿压条长度方向间隔分布的众多固定塞502，绝缘支架3上开设多个塞孔302，所述固定塞502穿过相邻金属并联条4之间的间隙而固定插设于所述塞孔302中，压条501压在金属并联条4的上部，从而实现金属并联条4与绝缘支架3的固定连接。
上述固定塞502的头部为半球型结构，且该半球型结构上开设有至少一条变形缝502a。半球型结构的直径略大于塞孔302孔径。变形缝使得固定塞502头部的半球型结构具有一定的弹性变形能力，从而保证固定塞502头部的半球型结构能够顺利塞入塞孔内，而且使得半球型结构与塞孔紧密结合而很难拔出。
固定塞502具有与金属并联条4外表面相对应的外表面——内凹弧形面，如此使得固定塞能够与金属并联条4紧密贴合，固定塞刚好紧紧支撑在相邻两金属并联条4之间，以防止金属并联条4晃动。
上述压紧连接块5为塑料材质。压紧连接块5和绝缘支架3均为注塑成型。
而且，本实施例中电池串联片1也采用了一种全新的结构形式，其包括环形的环片101以及固定连接在该环片轴向底端的底片102，所述环片101的四周 形成有径向向外凸出的多个外翻弹片101a以及径向向内凸出的多个内翻弹片101b。环片101轴向顶端还形成有多个电池插装导向片101c，这些电池插装导向片101c沿着环片101的圆周方向均匀间隔分布。图1中，所述外翻弹片101a与电池插装孔的孔壁弹性抵靠连接，所述内翻弹片101b与电池单体2的负极端弹性抵靠连接。电池插装导向片101c用于引导电池单体的负极端插入电池插装孔中。
更具体地，上述外翻弹片101a和内翻弹片101b通过环片101冲压而形成，外翻弹片101a和内翻弹片101b的数量相同。外翻弹片101a的长度两端与环片101的本体结构连为一体，而外翻弹片101a的中部径向向外凸出。内翻弹片101b的长度两端与环片101的本体结构连为一体，而内翻弹片101b的中部径向向内凸出。
本文所说的“径向”，如无特别说明，均以环片101为参照。
上述的各个外翻弹片101a沿着环片101的圆周方向均匀间隔分布，上述的各个内翻弹片101b也沿着环片101的圆周方向均匀间隔分布。而且上述的众多外翻弹片101a和众多内翻弹片101b沿圆周方向彼此交替布置。
为了方便上述电池串联片1的制作，本实施例中电池串联片1的环片101和底片102为分体式焊接结构，即环片101和底片102并非整体式结构，二者通过焊接方式固定连接在一起。具体地，环片101轴向底端形成有多个径向向内折弯的下爪片101d，下爪片101d与底片102焊接固定。这些下爪片101d沿着环片101的圆周方向均匀间隔分布。
实际应用时，可配置多个图1所示的电池模组，将其中一个电池模组上各电池单体2的上端(正极端)插入另一个电池模组上电池夹具的下部、并与该另一个电池模组上电池夹具中的串联片连接(必要时可将二者焊接固定)，如此实现两电池模组的串联连接。多个图1所示的电池模组串并联组合在一起而构成大容量锂离子电池。
这些图1中电池模组中的各个电池单体2依靠金属并联条4相互并联，依靠前述串联片与插入电池夹具另一侧的电池单体实现串联，如此将多个电池模组组装在一起而形成大容量的锂离子电池。
为了防止电池串联片1受到电池单体2的轴向抵压力而脱离电池插装孔，本实施例中，绝缘支架3上的支架孔301的孔壁处形成有一圈径向向内凸起的凸缘(支架孔301一端孔径较小而另一端孔径较大，对比图3和图4)，该凸缘用于对电池单体和电池串联片进行限位，防止电池串联片1受到电池单体2的轴向抵压力而脱离电池插装孔。
因为上述凸缘的存在，如果底片102为平面结构，则其很难与电池正极端相接触。对此，本实施例在底片102的中部冲制有向下凸出的凸起102a，该凸起为圆形，以便插入图1中电池夹具下方的电池极端(通常为正极端)与该凸起102a良好接触。
需要说明的是，这种电池串联片1也可以应用在传统结构的电池夹具上，而形成带并联网的电池模组。
上述实施例只为说明本申请的技术构思及特点，其目的在于让人们能够了解本申请的内容并据以实施，并不能以此限制本申请的保护范围。凡根据本申请主要技术方案的精神实质所做的等效变换或修饰，都应涵盖在本申请的保护范围之内。

Claims (10)

  1. 一种电池串联片，其特征在于，包括环形的环片(101)以及固定连接在该环片轴向底端的底片(102)，所述环片(101)的四周形成有径向向外凸出的若干个外翻弹片(101a)以及径向向内凸出的若干个内翻弹片(101b)。
  2. 如权利要求1所述的电池串联片，其特征在于，各个所述外翻弹片(101a)沿着所述环片(101)的圆周方向均匀间隔分布。
  3. 如权利要求1所述的电池串联片，其特征在于，各个所述内翻弹片(101b)沿着所述环片(101)的圆周方向均匀间隔分布。
  4. 如权利要求1所述的电池串联片，其特征在于，所述外翻弹片(101a)和内翻弹片(101b)通过对所述环片(101)冲压而形成，所述外翻弹片(101a)的长度两端与所述环片(101)的本体结构连为一体，所述外翻弹片(101a)的中部径向向外凸出，所述内翻弹片(101b)的长度两端与所述环片(101)的本体结构连为一体，所述内翻弹片(101b)的中部径向向内凸出。
  5. 如权利要求4所述的电池串联片，其特征在于，所述外翻弹片(101a)和所述内翻弹片(101b)的数量相同，并且各个所述外翻弹片(101a)和各个所述内翻弹片(101b)沿着所述环片(101)的圆周方向彼此交替布置。
  6. 如权利要求1所述的电池串联片，其特征在于，所述环片(101)轴向顶端形成有若干个沿环片(101)圆周方向间隔分布的电池插装导向片(101c)。
  7. 如权利要求1所述的电池串联片，其特征在于，所述环片(101)和所述底片(102)为分体式结构，二者焊接固定在一起。
  8. 如权利要求7所述的电池串联片，其特征在于，所述环片(101)轴向底端形成有若干个径向向内折弯的下爪片(101d)，所述下爪片(101d)与所述底片(102)焊接固定。
  9. 如权利要求8所述的电池串联片，其特征在于，各个所述下爪片(101d)沿着所述环片(101)的圆周方向均匀间隔分布。
  10. 如权利要求1所述的电池串联片，其特征在于，所述电池串联片为钢 质。
PCT/CN2018/091767 2017-06-30 2018-06-19 一种电池串联片 WO2019001302A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710521289.5 2017-06-30
CN201710521289.5A CN107240667A (zh) 2017-06-30 2017-06-30 一种电池串联片

Publications (1)

Publication Number Publication Date
WO2019001302A1 true WO2019001302A1 (zh) 2019-01-03

Family

ID=59991253

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/091767 WO2019001302A1 (zh) 2017-06-30 2018-06-19 一种电池串联片

Country Status (2)

Country Link
CN (1) CN107240667A (zh)
WO (1) WO2019001302A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019204399A1 (de) * 2019-03-28 2020-10-01 Robert Bosch Gmbh Batteriezellaufnahmeelement, Parallelverbindungselement und Batteriemodul

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107240667A (zh) * 2017-06-30 2017-10-10 苏州安靠电源有限公司 一种电池串联片
CN214542394U (zh) * 2021-04-07 2021-10-29 田甜 一种免焊式锂电池组

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202549964U (zh) * 2012-04-05 2012-11-21 河南科隆集团有限公司 电池串联连接装置
CN202712309U (zh) * 2012-06-29 2013-01-30 王怀云 圆柱形单体电池串联连接装置
CN103515565A (zh) * 2012-06-29 2014-01-15 王怀云 圆柱形单体电池串联连接方法
CN104037372A (zh) * 2014-06-30 2014-09-10 惠州亿纬锂能股份有限公司 电池连接结构组件及使用其的蓄电池组
CN204614970U (zh) * 2015-05-22 2015-09-02 苏州安靠电源有限公司 圆柱形单体电池充放电夹具
CN106207040A (zh) * 2016-08-31 2016-12-07 河南新太行电源股份有限公司 一种电池弹性连接装置
CN107240667A (zh) * 2017-06-30 2017-10-10 苏州安靠电源有限公司 一种电池串联片
CN206992209U (zh) * 2017-06-30 2018-02-09 苏州安靠电源有限公司 电池串联片

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101369649B (zh) * 2008-09-30 2010-06-02 赛恩斯能源科技有限公司 电池连接装置
CN102610777A (zh) * 2012-03-27 2012-07-25 河南科隆集团有限公司 一种有助于动力电池组实现高倍率放电的连接装置
CN105789939B (zh) * 2016-03-08 2018-10-26 广东明路电力电子有限公司 五金弹性触头
CN106876642A (zh) * 2017-03-21 2017-06-20 河南锂想动力科技有限公司 一种电池连接装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202549964U (zh) * 2012-04-05 2012-11-21 河南科隆集团有限公司 电池串联连接装置
CN202712309U (zh) * 2012-06-29 2013-01-30 王怀云 圆柱形单体电池串联连接装置
CN103515565A (zh) * 2012-06-29 2014-01-15 王怀云 圆柱形单体电池串联连接方法
CN104037372A (zh) * 2014-06-30 2014-09-10 惠州亿纬锂能股份有限公司 电池连接结构组件及使用其的蓄电池组
CN204614970U (zh) * 2015-05-22 2015-09-02 苏州安靠电源有限公司 圆柱形单体电池充放电夹具
CN106207040A (zh) * 2016-08-31 2016-12-07 河南新太行电源股份有限公司 一种电池弹性连接装置
CN107240667A (zh) * 2017-06-30 2017-10-10 苏州安靠电源有限公司 一种电池串联片
CN206992209U (zh) * 2017-06-30 2018-02-09 苏州安靠电源有限公司 电池串联片

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019204399A1 (de) * 2019-03-28 2020-10-01 Robert Bosch Gmbh Batteriezellaufnahmeelement, Parallelverbindungselement und Batteriemodul

Also Published As

Publication number Publication date
CN107240667A (zh) 2017-10-10

Similar Documents

Publication Publication Date Title
WO2019001301A1 (zh) 电池模组和大容量电池
WO2019001303A1 (zh) 一种锂离子电池模组和大容量锂离子电池
JP6083824B2 (ja) 接続信頼性が向上したバッテリーセル・ホルダー、及びそれを含むバッテリーモジュール
WO2019001302A1 (zh) 一种电池串联片
WO2019001300A1 (zh) 电池连接支架
US8828590B2 (en) Electric storage device provided with current collecting member, and method for manufacturing current collecting member
WO2019001304A1 (zh) 用于电池模组的电池夹具
CN202549964U (zh) 电池串联连接装置
US9029005B2 (en) Battery module structure
CN102593500A (zh) 二次电池
CN105009326B (zh) 蓄电元件
CN101689625B (zh) 电池构造体
JP5028780B2 (ja) 密閉形電池およびその製造方法
CN105609667A (zh) 二次电池
CN103515565A (zh) 圆柱形单体电池串联连接方法
WO2021135191A1 (zh) 一种无焊接式汇流排
CN206301892U (zh) 折叠式电芯及二次扣式锂电池
JP2008159357A (ja) 円筒形二次電池
CN106129479A (zh) 电芯结构及其制备方法、扣式二次锂离子电池
CN109742303A (zh) 电池串联组件和电池模组
JP2014049194A (ja) 蓄電装置
KR101678810B1 (ko) 용접봉 정렬용 홀을 포함하고 있는 지그를 구비한 용접 장치
CN206134792U (zh) 一种保护电池的铜镍复合板
CN208368597U (zh) 一种锂离子电池蝴蝶焊用垫片
CN206516694U (zh) 一种电池模组及动力系统

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: 18824075

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: 18824075

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 22/07/2020)

122 Ep: pct application non-entry in european phase

Ref document number: 18824075

Country of ref document: EP

Kind code of ref document: A1