WO2019148616A1 - Battery module - Google Patents

Battery module Download PDF

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Publication number
WO2019148616A1
WO2019148616A1 PCT/CN2018/080691 CN2018080691W WO2019148616A1 WO 2019148616 A1 WO2019148616 A1 WO 2019148616A1 CN 2018080691 W CN2018080691 W CN 2018080691W WO 2019148616 A1 WO2019148616 A1 WO 2019148616A1
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WO
WIPO (PCT)
Prior art keywords
pole
connecting piece
electrode connecting
positioning
battery module
Prior art date
Application number
PCT/CN2018/080691
Other languages
French (fr)
Chinese (zh)
Inventor
陈亮美
马林
刘杨
秦峰
章华
郭志君
闵云飞
Original Assignee
宁德时代新能源科技股份有限公司
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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
Publication of WO2019148616A1 publication Critical patent/WO2019148616A1/en

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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
    • H01M50/50—Current conducting connections for cells or 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
    • 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 energy storage devices, and in particular, to a battery module.
  • the conventional battery module has many components, complicated structure, and complicated assembly process, which will undoubtedly increase production and processing costs.
  • connection process of the electrode connecting piece and the pole of the single battery as an example, when connecting the electrode connecting piece and the pole of the single battery, in order to ensure the positional accuracy of the electrode connecting piece, it is often necessary to install the electrode connecting piece to the wire harness. After the isolation board is positioned and positioned, the welding operation can be performed to connect the electrode connecting piece to the pole. This causes more equipment and more complicated processes in the assembly process of the battery module, which is not conducive to improving production. effectiveness.
  • the present application provides a battery module to solve the problem of low production efficiency of the current battery module.
  • the present application provides a battery module including a single battery, the single battery including a pole;
  • An electrode connecting piece is connected to the pole
  • one of the pole and the electrode connecting piece is provided with a positioning boss, and the other is provided with a positioning hole, and the positioning boss and the positioning hole are positioned and matched.
  • the pole is provided with the positioning boss, and the electrode connecting piece is provided with the positioning hole.
  • the pole includes a first pole and a second pole
  • the electrode connecting piece includes a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the second connecting portion
  • the first connecting portion is connected to the first pole, and the second connecting portion is connected to the second pole;
  • the positioning hole is disposed on the first connecting portion or the second connecting portion, and the positioning boss is disposed on the first pole or the second pole.
  • only one positioning hole is disposed on the electrode connecting piece, and only one positioning boss is disposed on the pole.
  • the electrode connecting piece further includes an adjusting portion, wherein the first connecting portion is connected to the second connecting portion through the adjusting portion, and the adjusting portion is convex toward or away from the unit battery. Out.
  • the positioning hole is a through hole, and the positioning hole penetrates the electrode connecting piece along a thickness direction of the electrode connecting piece.
  • an upper surface of the positioning boss is flush with an upper surface of the electrode connecting piece.
  • the positioning hole is a long hole, and a length direction of the positioning hole is the same as a length direction of the electrode connecting piece.
  • the positioning boss is disposed on an upper surface of the pole along a thickness direction of the electrode connecting piece.
  • the positioning boss and the pole are integrally formed.
  • the positioning boss is provided on one of the pole and the electrode connecting piece, and the positioning hole is provided on the other, so that only the positioning boss and the positioning need to be positioned before welding.
  • the positioning of the holes can complete the positioning work between the electrode connecting piece and the pole. This way, the worker can realize the positioning purpose of the electrode connecting piece without using other equipment, and the positioning process is relatively simple and convenient. Therefore, the processing efficiency of the battery module can be improved.
  • FIG. 1 is a schematic structural diagram of a battery module according to an embodiment of the present application.
  • FIG. 2 is a schematic structural view of an electrode connecting piece in a battery module according to an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of another electrode connecting piece in a battery module according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of cooperation between a single cell and an electrode connecting piece according to an embodiment of the present application.
  • the embodiment of the present application provides a battery module, which includes a single battery 1 and an electrode connecting piece 2.
  • the plurality of single cells 1 can be connected through the electrode connecting piece 2 Connect to get the voltage or current value that meets the demand; at the same time, it can also increase the capacity of the entire battery module.
  • FIG. 1-4 the embodiment of the present application provides a battery module, which includes a single battery 1 and an electrode connecting piece 2.
  • the plurality of single cells 1 can be connected through the electrode connecting piece 2 Connect to get the voltage or current value that meets the demand; at the same time, it can also increase the capacity of the entire battery module.
  • the unit cell 1 includes a pole 11 which can be disposed on one of the pole 11 and the electrode tab 2 during the connection of the pole 11 and the electrode tab 2
  • the positioning hole 20 is disposed on the other side, so that the positioning boss 110 and the positioning hole 20 are positioned and matched, so that the electrode connecting piece 2 and the pole 11 are positioned and matched to facilitate connecting the electrode connecting piece 2 and the pole 11 , thereby The connection accuracy between the electrode connecting piece 2 and the pole 11 is improved.
  • the positioning boss 110 can be directly formed in the manufacturing process of the pole 11 or the electrode connecting piece 2 by integral molding; the positioning hole 20 can be formed by drilling, and of course, by changing the mold. The shape allows the positioning hole 20 to be formed directly on the pole 11 or the electrode connecting piece 2.
  • positioning boss 110 on one of the pole 11 and the electrode connecting piece 2
  • positioning holes 20 are provided on the other, it is only necessary to position the positioning boss 110 and the positioning hole 20 before welding. Positioning cooperation can complete the positioning work between the electrode connecting piece 2 and the pole column 11. This way, the worker can realize the positioning purpose of the electrode connecting piece 2 without using other equipment, and the positioning process is relatively simple. Convenient, thus improving the processing efficiency of the battery module.
  • the electrode connecting piece 2 and the pole 11 are generally connected by welding, and the welding work is performed through the upper surface of the electrode connecting piece 2 during the welding process, so that in order to facilitate the welding work, A positioning boss 110 is disposed on the pole 11 and a positioning hole 20 is formed on the electrode connecting piece 2, so that the electrode connecting piece 2 and the position of the positioning hole 20 having a relatively small thickness can be obtained during the welding process.
  • the pole 11 performs a welding work.
  • the pole 11 is generally protruded from the top cover of the unit cell 1, so that the positioning boss 110 can be disposed at any position on the outer surface of the pole 11;
  • the shape of the boss 110 may be various, such as a column shape, an elliptical column shape or a strip shape.
  • the positioning boss 110 may be formed in synchronization with the pole column 11 by integral molding, which may improve the positioning boss 110 and The connection stability between the poles 11; at the same time, the processing efficiency of the positioning boss 110 and the poles 11 can also be improved.
  • the positioning hole 20 can be processed on the electrode connecting piece 2, for example, the electrode connecting piece can be drilled, milled or stamped.
  • the positioning hole 20 is formed on the second surface.
  • the shape and size of the positioning boss 110 and the positioning hole 20 can be completely the same.
  • the worker is in the process.
  • the assembly tolerance can be reserved on at least one of the two to reduce the assembly difficulty.
  • the worker can pre-assemble the positioning hole 20 on the electrode connecting piece 2 and the positioning boss 110 on the pole 11 together, and then connect the electrode connection through the welding device. Sheet 2 and pole 11.
  • the positioning hole 20 may be a blind hole or a through hole penetrating the electrode connecting piece 2 in the thickness direction of the electrode connecting piece 2, and can be freely selected by those skilled in the art according to actual conditions.
  • a single cell 1 and a second pole 112 may be included in a single cell 1.
  • the electrode connecting piece 2 connected to the two poles 11 may include a first connecting portion 21 and a second connecting portion. 22, the first pole 111 may be connected to the first connecting portion 21, correspondingly, the second pole 112 may be connected with the second connecting portion 22; considering the dimensional tolerance between different single cells 1;
  • the spacing between adjacent single cells 1 may be different, so that the positioning holes 20 may be provided only on one side of the electrode connecting piece 2, that is, only on the first connecting portion 21
  • the number of the positioning holes 20 disposed on the first connecting portion 21 or the second connecting portion 22 may be only one.
  • only one positioning may be disposed on the first pole 111 or the second pole 112.
  • the boss 110 is disposed in such a manner as to reduce the number of processing steps to further improve the processing efficiency; at the same time, the effect of eliminating the difference between the individual members in the unit cell 1 by the electrode tab 2 can be further improved.
  • the electrode tab 2 in the battery module provided by the present application may further include an adjusting portion 23 , and the first connecting portion 21 may pass through the adjusting portion 23 .
  • the second connecting portion 22 is connected, and the adjusting portion 23 can be protruded toward or away from the unit cell 1 in such a manner that the electrode connecting piece 2 further has a function of adjusting the height difference between the different unit batteries 1.
  • the adjusting portion 23 can be formed on the electrode connecting piece by bending or punching, and the adjusting portion 23 can be an arc structure.
  • the curved adjusting portion 23 can bend itself.
  • the spacing between the unit cells 1 is adjusted, and the adjusting portion 23 can be protruded toward the unit cell 1 in such a manner that the installation of the electrode connecting piece 2 in the battery module in the thickness direction thereof can be reduced.
  • the space in turn, can increase the energy density of the battery module, and those skilled in the art can determine the size of the adjustment portion 23 according to the actual situation.
  • the adjusting portion 23 can also protrude away from the unit cell 1. By moving the adjusting portion 23 away from the unit cell 1, it can be ensured that the electrode connecting piece 2 is connected to the pole column 11, It does not contact or connect with any other part of the unit cell 1, which can improve the safety of the battery module.
  • the positioning hole 20 may be a through hole that penetrates the electrode connecting piece 2 in the thickness direction of the electrode connecting piece 2.
  • the positioning hole 20 penetrating the electrode connecting piece 2 in the thickness direction can be processed by means of a drilling machine or a milling machine, and the like, so that the worker can directly observe the positioning of the pole 11 from the upper side of the electrode connecting piece 2.
  • the upper surface of the positioning boss 110 extending into the positioning hole 20 can be flush with the upper surface of the electrode connecting piece 2 to further reduce the difficulty of seam welding; at the same time, the electrode connecting piece 2 can be lifted.
  • the overcurrent area between the poles 11 can further improve the overcurrent capability of the entire battery module.
  • the positioning hole 20 and the positioning boss 110 may be provided with a strip structure and extend along the length of the electrode connecting piece 2 to be in the welding process.
  • the electrode tab 2 and the pole 11 can be connected along the length direction of the positioning hole 20, so that a longer weld length can be obtained to make the connection relationship between the two more stable.
  • the positioning boss 110 and the positioning hole 20 are both provided in an elongated structure, and are arranged along the electrode connection piece 2 Extending in the length direction, in the welding process, most of the structures in the electrode connecting piece 2 can be directly connected with the poles 11, thereby improving the connection stability between the electrode connecting piece 2 and the poles 11;
  • the positioning boss 110 and the positioning hole 20 of the strip structure can also limit the relative displacement between the electrode connecting piece 2 and the pole 11 to a greater extent, so as to ensure the safe operation of the entire battery module.
  • the specific shape of the elongated positioning hole 20 may be a rectangle, and the aspect ratio may be between 3:1 and 10:1; of course, the positioning hole 20 may have other shapes, such as a long waist hole, etc. Improvements made by those skilled in the art according to their own needs in the actual production process are also within the scope of the present application.
  • the positioning boss 110 may be disposed on the upper surface of the pole 11.
  • the upper surface refers to the surface on which the pole 11 is located at the uppermost side in the thickness direction of the electrode connecting piece 2.
  • a welding positioning hole (not shown) may be disposed on the electrode connecting piece 2, and in the thickness direction of the electrode connecting piece 2, the welding positioning hole is penetrated through the electrode connecting piece 2, specifically, a laser is used.
  • the laser positioning is required by means of the welding positioning hole, and the welding efficiency can be obviously improved by laser welding, so as to further improve the processing efficiency of the battery module provided by the present application. .

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

Abstract

The present application relates to the technical field of energy storage devices, and relates in particular to a battery module. The battery module comprises single batteries and electrode connecting pieces, the single batteries comprising electrode poles, the electrode connecting pieces being connected to the electrode poles. Of the electrode poles and the electrode connecting pieces, one is provided with positioning bosses and the other is provided with positioning holes, the positioning bosses being positionally matched with the positioning holes. The battery module of the present application has a high production efficiency.

Description

电池模组Battery module 技术领域Technical field
本申请涉及储能器件技术领域，尤其涉及一种电池模组。The present application relates to the field of energy storage devices, and in particular, to a battery module.
背景技术Background technique
随着节能环保意识的增强，可反复使用的充电电池越来越受青睐。但是，传统的电池模组中零部件较多，结构复杂，装配工序复杂，这无疑会增加生产加工成本。以电极连接片与单体电池的极柱的连接过程为例，在连接电极连接片与单体电池的极柱时，为了保证电极连接片的位置精准度，往往需要将电极连接片安装在线束隔离板上且进行定位之后，才能进行焊接操作，以将电极连接片连接在极柱上，这造成电池模组的装配过程中所使用的设备更多，且工序更繁琐，不利于提升提高生产效率。With the increasing awareness of energy conservation and environmental protection, reusable rechargeable batteries are becoming more and more popular. However, the conventional battery module has many components, complicated structure, and complicated assembly process, which will undoubtedly increase production and processing costs. Taking the connection process of the electrode connecting piece and the pole of the single battery as an example, when connecting the electrode connecting piece and the pole of the single battery, in order to ensure the positional accuracy of the electrode connecting piece, it is often necessary to install the electrode connecting piece to the wire harness. After the isolation board is positioned and positioned, the welding operation can be performed to connect the electrode connecting piece to the pole. This causes more equipment and more complicated processes in the assembly process of the battery module, which is not conducive to improving production. effectiveness.
发明内容Summary of the invention
本申请提供了一种电池模组，以解决目前电池模组生产效率低的问题。The present application provides a battery module to solve the problem of low production efficiency of the current battery module.
本申请提供了一种电池模组，包括单体电池，所述单体电池包括极柱；The present application provides a battery module including a single battery, the single battery including a pole;
电极连接片，所述电极连接片与所述极柱连接，An electrode connecting piece, the electrode connecting piece is connected to the pole,
其中，所述极柱和所述电极连接片中，一者上设置有定位凸台，另一者上设置有定位孔，所述定位凸台和所述定位孔定位配合。Wherein, one of the pole and the electrode connecting piece is provided with a positioning boss, and the other is provided with a positioning hole, and the positioning boss and the positioning hole are positioned and matched.
优选的，所述极柱上设置有所述定位凸台，所述电极连接片设置有所述定位孔。Preferably, the pole is provided with the positioning boss, and the electrode connecting piece is provided with the positioning hole.
可选的，所述极柱包括第一极柱和第二极柱，所述电极连接片包括第一连接部和第二连接部，所述第一连接部与所述第二连接部连接；Optionally, the pole includes a first pole and a second pole, the electrode connecting piece includes a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the second connecting portion;
所述第一连接部与所述第一极柱连接，所述第二连接部与所述第二极柱连接；The first connecting portion is connected to the first pole, and the second connecting portion is connected to the second pole;
所述第一连接部或所述第二连接部上设置有所述定位孔，所述第一极 柱或所述第二极柱上设置有所述定位凸台。The positioning hole is disposed on the first connecting portion or the second connecting portion, and the positioning boss is disposed on the first pole or the second pole.
可选的，所述电极连接片上仅设置有一个所述定位孔，所述极柱上仅设置一个所述定位凸台。Optionally, only one positioning hole is disposed on the electrode connecting piece, and only one positioning boss is disposed on the pole.
可选的，所述电极连接片还包括调节部，所述第一连接部通过所述调节部与所述第二连接部连接，所述调节部向靠近或远离所述单体电池的方向凸出。Optionally, the electrode connecting piece further includes an adjusting portion, wherein the first connecting portion is connected to the second connecting portion through the adjusting portion, and the adjusting portion is convex toward or away from the unit battery. Out.
可选的，所述定位孔为贯穿孔，沿所述电极连接片的厚度方向，所述定位孔贯穿所述电极连接片。Optionally, the positioning hole is a through hole, and the positioning hole penetrates the electrode connecting piece along a thickness direction of the electrode connecting piece.
可选的，所述定位凸台的上表面与所述电极连接片的上表面平齐。Optionally, an upper surface of the positioning boss is flush with an upper surface of the electrode connecting piece.
可选的，所述定位孔为长条孔，所述定位孔的长度方向与所述电极连接片的长度方向相同。Optionally, the positioning hole is a long hole, and a length direction of the positioning hole is the same as a length direction of the electrode connecting piece.
可选的，沿所述电极连接片的厚度方向，所述定位凸台设置在所述极柱的上表面。Optionally, the positioning boss is disposed on an upper surface of the pole along a thickness direction of the electrode connecting piece.
可选的，所述定位凸台和所述极柱一体成型。Optionally, the positioning boss and the pole are integrally formed.
本申请提供的技术方案可以达到以下有益效果：The technical solution provided by the present application can achieve the following beneficial effects:
本申请所提供的电池模组中，通过在极柱和电极连接片中的一者上设置定位凸台，且在另一者上设置定位孔，使得在焊接之前仅需将定位凸台与定位孔定位配合，即可完成电极连接片与极柱之间的定位工作，这种方式使工作人员可以不借助其他设备，即可实现对电极连接片的定位目的，且定位过程相对简单、方便，因而可以提升电池模组的加工效率。In the battery module provided by the present application, the positioning boss is provided on one of the pole and the electrode connecting piece, and the positioning hole is provided on the other, so that only the positioning boss and the positioning need to be positioned before welding. The positioning of the holes can complete the positioning work between the electrode connecting piece and the pole. This way, the worker can realize the positioning purpose of the electrode connecting piece without using other equipment, and the positioning process is relatively simple and convenient. Therefore, the processing efficiency of the battery module can be improved.
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本申请。The above general description and the following detailed description are merely exemplary and are not intended to limit the application.
附图说明DRAWINGS
图1为本申请实施例所提供的电池模组的结构示意图；1 is a schematic structural diagram of a battery module according to an embodiment of the present application;
图2为本申请实施例所提供的电池模组中电极连接片的结构示意图；2 is a schematic structural view of an electrode connecting piece in a battery module according to an embodiment of the present application;
图3为本申请实施例所提供的电池模组中另一种电极连接片的结构示意图；3 is a schematic structural diagram of another electrode connecting piece in a battery module according to an embodiment of the present application;
图4为本申请实施例所提供的单体电池与电极连接片的配合示意图。FIG. 4 is a schematic diagram of cooperation between a single cell and an electrode connecting piece according to an embodiment of the present application.
附图标记：Reference mark:
1-单体电池；1-cell battery;
11-极柱；11-pole
110-定位凸台；110-positioning boss;
111-第一极柱；111-first pole;
112-第二极柱；112-second pole;
2-电极连接片；2-electrode connecting piece;
20-定位孔；20-positioning hole;
21-第一连接部；21-first connection portion;
22-第二连接部；22-second connection portion;
23-调节部。23-Regulatory section.
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。The drawings herein are incorporated in and constitute a part of the specification,
具体实施方式Detailed ways
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。The present application will be further described in detail below through specific embodiments and with reference to the accompanying drawings.
如图1-4所示，本申请实施例提供了一种电池模组，该电池模组包括单体电池1和电极连接片2，多个单体电池1之间可以通过电极连接片2电连接，以得到满足需求的电压值或电流值；同时还可以提升整个电池模组的容量。如图4所示，单体电池1中包括极柱11，在极柱11和电极连接片2的连接过程中，可以通过在极柱11和电极连接片2中的一者上设置定位凸台110，另一者上设置定位孔20，以使定位凸台110与定位孔20定位配合，进而使电极连接片2与极柱11定位配合，以便于连接电极连接片2与极柱11，从而提升电极连接片2与极柱11之间的连接精度。具体的，可以通过一体成型的方式，使定位凸台110直接形成于极柱11或电极连接片2的制造过程中；定位孔20可以通过钻加工的方式形成，当然，也可以通过改变模具的形状，使定位孔20也可以直接形成于极柱11或电极连接片2上。As shown in FIG. 1-4, the embodiment of the present application provides a battery module, which includes a single battery 1 and an electrode connecting piece 2. The plurality of single cells 1 can be connected through the electrode connecting piece 2 Connect to get the voltage or current value that meets the demand; at the same time, it can also increase the capacity of the entire battery module. As shown in FIG. 4, the unit cell 1 includes a pole 11 which can be disposed on one of the pole 11 and the electrode tab 2 during the connection of the pole 11 and the electrode tab 2 The positioning hole 20 is disposed on the other side, so that the positioning boss 110 and the positioning hole 20 are positioned and matched, so that the electrode connecting piece 2 and the pole 11 are positioned and matched to facilitate connecting the electrode connecting piece 2 and the pole 11 , thereby The connection accuracy between the electrode connecting piece 2 and the pole 11 is improved. Specifically, the positioning boss 110 can be directly formed in the manufacturing process of the pole 11 or the electrode connecting piece 2 by integral molding; the positioning hole 20 can be formed by drilling, and of course, by changing the mold. The shape allows the positioning hole 20 to be formed directly on the pole 11 or the electrode connecting piece 2.
上述可知，通过在极柱11和电极连接片2中的一者上设置定位凸台110，且在另一者上设置定位孔20，使得在焊接之前仅需将定位凸台110与定位孔20定位配合，即可完成电极连接片2与极柱11之间的定位工作，这种方式使工作人员可以不借助其他设备，即可实现对电极连接片2的定位目的，且定位过程相对简单、方便，因而可以提升电池模组的加工效率。As described above, by providing the positioning boss 110 on one of the pole 11 and the electrode connecting piece 2, and positioning holes 20 are provided on the other, it is only necessary to position the positioning boss 110 and the positioning hole 20 before welding. Positioning cooperation can complete the positioning work between the electrode connecting piece 2 and the pole column 11. This way, the worker can realize the positioning purpose of the electrode connecting piece 2 without using other equipment, and the positioning process is relatively simple. Convenient, thus improving the processing efficiency of the battery module.
在电池领域，一般是通过焊接的方式连接电极连接片2与极柱11的，且在焊接的过程中是通过电极连接片2的上表面进行焊接工作的，因而为了便于焊接工作的进行，可以在极柱11上设置定位凸台110，而在电极连接片2上形成定位孔20，从而在焊接过程中，可以从厚度相对较小的定位孔20所在的位置处，对电极连接片2和极柱11进行焊接工作。In the field of batteries, the electrode connecting piece 2 and the pole 11 are generally connected by welding, and the welding work is performed through the upper surface of the electrode connecting piece 2 during the welding process, so that in order to facilitate the welding work, A positioning boss 110 is disposed on the pole 11 and a positioning hole 20 is formed on the electrode connecting piece 2, so that the electrode connecting piece 2 and the position of the positioning hole 20 having a relatively small thickness can be obtained during the welding process. The pole 11 performs a welding work.
具体地，在电极连接片2的厚度方向上，极柱11通常凸出于单体电池1的顶盖，因而定位凸台110可以被设置在极柱11外表面的任意位置处；另外，定位凸台110的形状可以为多种，如圆柱状，椭圆柱状或长条状等，优选的，定位凸台110可以与极柱11通过一体成型的方式同步形成，这可以提升定位凸台110与极柱11之间的连接稳定性；同时，还可以提升定位凸台110与极柱11的加工效率。与极柱11上的定位凸台110相对应的，如图2和图3所示，电极连接片2上可以加工定位孔20，如可以通过钻加工，铣加工或冲压等方式在电极连接片2上形成定位孔20，为了使定位凸台110与定位孔20之间形成定位配合关系，定位凸台110与定位孔20的形状和尺寸可以完全相同，需要说明的是，工作人员在加工过程中，可以在二者中至少一者上预留装配公差，以降低装配难度。在本申请所提供的电池模组的组装过程中，工作人员可以预先将电极连接片2上的定位孔20与极柱11上的定位凸台110装配到一起，然后可以通过焊接设备连接电极连接片2和极柱11。另外，定位孔20可以为盲孔，也可以为沿电极连接片2厚度方向贯穿电极连接片2的通孔，对此，本领域技术人员可以根据实际情况自由选定。Specifically, in the thickness direction of the electrode tab 2, the pole 11 is generally protruded from the top cover of the unit cell 1, so that the positioning boss 110 can be disposed at any position on the outer surface of the pole 11; The shape of the boss 110 may be various, such as a column shape, an elliptical column shape or a strip shape. Preferably, the positioning boss 110 may be formed in synchronization with the pole column 11 by integral molding, which may improve the positioning boss 110 and The connection stability between the poles 11; at the same time, the processing efficiency of the positioning boss 110 and the poles 11 can also be improved. Corresponding to the positioning boss 110 on the pole 11, as shown in FIG. 2 and FIG. 3, the positioning hole 20 can be processed on the electrode connecting piece 2, for example, the electrode connecting piece can be drilled, milled or stamped. The positioning hole 20 is formed on the second surface. In order to form a positioning fit relationship between the positioning boss 110 and the positioning hole 20, the shape and size of the positioning boss 110 and the positioning hole 20 can be completely the same. It should be noted that the worker is in the process. In the assembly tolerance, the assembly tolerance can be reserved on at least one of the two to reduce the assembly difficulty. In the assembly process of the battery module provided by the present application, the worker can pre-assemble the positioning hole 20 on the electrode connecting piece 2 and the positioning boss 110 on the pole 11 together, and then connect the electrode connection through the welding device. Sheet 2 and pole 11. In addition, the positioning hole 20 may be a blind hole or a through hole penetrating the electrode connecting piece 2 in the thickness direction of the electrode connecting piece 2, and can be freely selected by those skilled in the art according to actual conditions.
进一步的，一个单体电池1中可以包括第一极柱111和第二极柱112，相应的，与两个极柱11连接的电极连接片2可以包括第一连接部21和第二连接部22，第一极柱111可以与第一连接部21连接，对应的，第二极柱112可以与第二连接部22连接；考虑到不同单体电池1之间存在尺寸 公差；同时，在单体电池1的安装过程中，相邻的单体电池1之间的间距可能不同，因而可以通过仅在电极连接片2的一侧设置定位孔20，即可以仅在第一连接部21上设置有定位孔20，或者仅在第二连接部22上设置定位孔20的方式，来规避前述尺寸公差和单体电池1之间间距不同的问题；相应的，定位凸台110也可以仅设置在第一极柱111或第二极柱112上，从而在电极连接片2与不同单体电池1配合过程中，可以消除因不同单体电池1之间间距不同，而导致的电极连接片2与单体电池1之间配合难度大的问题。Further, a single cell 1 and a second pole 112 may be included in a single cell 1. Correspondingly, the electrode connecting piece 2 connected to the two poles 11 may include a first connecting portion 21 and a second connecting portion. 22, the first pole 111 may be connected to the first connecting portion 21, correspondingly, the second pole 112 may be connected with the second connecting portion 22; considering the dimensional tolerance between different single cells 1; During the installation of the body battery 1, the spacing between adjacent single cells 1 may be different, so that the positioning holes 20 may be provided only on one side of the electrode connecting piece 2, that is, only on the first connecting portion 21 There is a positioning hole 20, or only the positioning hole 20 is provided on the second connecting portion 22, to avoid the problem that the aforementioned dimensional tolerance and the spacing between the unit cells 1 are different; correspondingly, the positioning boss 110 can also be disposed only in The first pole 111 or the second pole 112 is disposed so that the electrode connecting piece 2 and the difference between the different unit cells 1 can be eliminated during the process of the electrode connecting piece 2 being matched with the different unit cells 1. Difficult problem of matching between single cells 1
更具体的，设置在第一连接部21或第二连接部22上的定位孔20的数量可以仅为一个，对应的，第一极柱111或第二极柱112上也可以仅设置一个定位凸台110，如此设置，可以减少加工工序，以进一步提升加工效率；同时，还可以进一步提升电极连接片2消除单体电池1中不同个体之间差异的效果。More specifically, the number of the positioning holes 20 disposed on the first connecting portion 21 or the second connecting portion 22 may be only one. Correspondingly, only one positioning may be disposed on the first pole 111 or the second pole 112. The boss 110 is disposed in such a manner as to reduce the number of processing steps to further improve the processing efficiency; at the same time, the effect of eliminating the difference between the individual members in the unit cell 1 by the electrode tab 2 can be further improved.
为了进一步提升电极连接片2调节单体电池1之间不同间距的能力，本申请所提供的电池模组中的电极连接片2还可以包括调节部23，第一连接部21可以通过调节部23与第二连接部22连接，且调节部23可以向靠近或远离单体电池1的方向凸出，如此设置，使得电极连接片2还具备了调节不同单体电池1间高度差的功能。In order to further improve the ability of the electrode tab 2 to adjust the different spacing between the cells 1 , the electrode tab 2 in the battery module provided by the present application may further include an adjusting portion 23 , and the first connecting portion 21 may pass through the adjusting portion 23 . The second connecting portion 22 is connected, and the adjusting portion 23 can be protruded toward or away from the unit cell 1 in such a manner that the electrode connecting piece 2 further has a function of adjusting the height difference between the different unit batteries 1.
具体的，可以通过折弯或冲压的方式在电极连接片上形成调节部23，调节部23可以为弧形结构，在电池模组的工作过程中，弧形的调节部23可以通过弯折自身的方式，调节单体电池1之间的间距，且调节部23可以向靠近单体电池1的方向凸出，如此设置，可以减少电极连接片2在其厚度方向上所占电池模组内的安装空间，进而可以提升电池模组的能量密度，本领域技术人员可以根据实际情况确定调节部23凸出的尺寸。同样的，在某些情况下，调节部23也可以向远离单体电池1的方向凸出，通过使调节部23远离单体电池1，可以保证电极连接片2除了与极柱11连接外，不与单体电池1上其他任意部位接触或连接，这可以提升电池模组的安全性。Specifically, the adjusting portion 23 can be formed on the electrode connecting piece by bending or punching, and the adjusting portion 23 can be an arc structure. During the operation of the battery module, the curved adjusting portion 23 can bend itself. In a manner, the spacing between the unit cells 1 is adjusted, and the adjusting portion 23 can be protruded toward the unit cell 1 in such a manner that the installation of the electrode connecting piece 2 in the battery module in the thickness direction thereof can be reduced. The space, in turn, can increase the energy density of the battery module, and those skilled in the art can determine the size of the adjustment portion 23 according to the actual situation. Similarly, in some cases, the adjusting portion 23 can also protrude away from the unit cell 1. By moving the adjusting portion 23 away from the unit cell 1, it can be ensured that the electrode connecting piece 2 is connected to the pole column 11, It does not contact or connect with any other part of the unit cell 1, which can improve the safety of the battery module.
进一步的，为了简化定位凸台110与定位孔20之间的配合工作，定位孔20可以为通孔，其在电极连接片2的厚度方向上贯穿电极连接片2。Further, in order to simplify the cooperation between the positioning boss 110 and the positioning hole 20, the positioning hole 20 may be a through hole that penetrates the electrode connecting piece 2 in the thickness direction of the electrode connecting piece 2.
具体的，可以借助钻床或铣床等设备，加工出沿前述厚度方向贯穿电极连接片2的定位孔20，如此设置，使得工作人员可以直接从电极连接片2的上方观察到极柱11上定位凸台110的位置，从而可以更容易地完成电极连接片2的定位工作；同时，在通过焊接连接电极连接片2和极柱11的过程中，可以直接采用对缝焊工艺直接连接电极连接片2和极柱11，这提升了焊接工作的便利性。Specifically, the positioning hole 20 penetrating the electrode connecting piece 2 in the thickness direction can be processed by means of a drilling machine or a milling machine, and the like, so that the worker can directly observe the positioning of the pole 11 from the upper side of the electrode connecting piece 2. The position of the stage 110, so that the positioning work of the electrode connecting piece 2 can be completed more easily; meanwhile, in the process of connecting the electrode connecting piece 2 and the pole 11 by welding, the electrode connecting piece 2 can be directly connected by the seam welding process. And the pole 11, which improves the convenience of the welding work.
更具体的，可以使伸入定位孔20中的定位凸台110的上表面与电极连接片2的上表面平齐，以进一步降低对缝焊接的难度；同时，还可以提升电极连接片2与极柱11之间的过流面积，进而可以提升整个电池模组的过流能力。More specifically, the upper surface of the positioning boss 110 extending into the positioning hole 20 can be flush with the upper surface of the electrode connecting piece 2 to further reduce the difficulty of seam welding; at the same time, the electrode connecting piece 2 can be lifted. The overcurrent area between the poles 11 can further improve the overcurrent capability of the entire battery module.
为了提升电极连接片2与单体电池1之间的连接强度，定位孔20与定位凸台110均可以设置成长条状结构，且均沿电极连接片2的长度方向延伸，以在焊接过程中，可以沿着定位孔20的长度方向连接电极连接片2和极柱11，从而可以获得更长的焊缝长度，以使二者的连接关系更稳定。In order to increase the connection strength between the electrode connecting piece 2 and the unit cell 1, the positioning hole 20 and the positioning boss 110 may be provided with a strip structure and extend along the length of the electrode connecting piece 2 to be in the welding process. The electrode tab 2 and the pole 11 can be connected along the length direction of the positioning hole 20, so that a longer weld length can be obtained to make the connection relationship between the two more stable.
具体来说，由于不同单体电池1之间的电极连接片2通常为近似长方形的结构，因而通过设置定位凸台110与定位孔20均为长条状结构，且使其沿电极连接片2的长度方向延伸，从而在焊接过程中，可以使电极连接片2中大部分结构可以直接与极柱11相连接，进而提升电极连接片2与极柱11之间的连接稳定性；同时，长条状结构的定位凸台110和定位孔20还可以更大程度地限制电极连接片2与极柱11之间的相对位移，以保证整个电池模组安全正常工作。另外，长条状定位孔20的具体形状可以为长方形，其长宽比可以为3:1～10:1之间；当然，定位孔20还可以为其他形状，如长腰孔等，对此，本领域技术人员在实际生产过程中根据自身需求所做的改进方案也在本申请的保护范围之内。Specifically, since the electrode connection piece 2 between the different unit cells 1 is generally an approximately rectangular structure, the positioning boss 110 and the positioning hole 20 are both provided in an elongated structure, and are arranged along the electrode connection piece 2 Extending in the length direction, in the welding process, most of the structures in the electrode connecting piece 2 can be directly connected with the poles 11, thereby improving the connection stability between the electrode connecting piece 2 and the poles 11; The positioning boss 110 and the positioning hole 20 of the strip structure can also limit the relative displacement between the electrode connecting piece 2 and the pole 11 to a greater extent, so as to ensure the safe operation of the entire battery module. In addition, the specific shape of the elongated positioning hole 20 may be a rectangle, and the aspect ratio may be between 3:1 and 10:1; of course, the positioning hole 20 may have other shapes, such as a long waist hole, etc. Improvements made by those skilled in the art according to their own needs in the actual production process are also within the scope of the present application.
为了进一步简化通过定位孔20与定位凸台110之间的配合，来完成对电极连接片2定位的工作，一种优选的具体实施例是，定位凸台110可以设置在极柱11的上表面，前述上表面是指在电极连接片2的厚度方向上，极柱11位于最上方的表面。In order to further simplify the work of positioning the electrode connecting piece 2 by the cooperation between the positioning hole 20 and the positioning boss 110, in a preferred embodiment, the positioning boss 110 may be disposed on the upper surface of the pole 11. The upper surface refers to the surface on which the pole 11 is located at the uppermost side in the thickness direction of the electrode connecting piece 2.
进一步的，可以在电极连接片2上设置焊接定位孔(图中未示出)，且在电极连接片2的厚度方向上，使焊接定位孔贯穿电极连接片2，具体 来说，在采用激光焊接的方式连接电极连接片2和极柱11时，需要借助焊接定位孔对激光进行定位，且采用激光焊接的方式可以明显提升焊接效率，以进一步提升本申请所提供的电池模组的加工效率。Further, a welding positioning hole (not shown) may be disposed on the electrode connecting piece 2, and in the thickness direction of the electrode connecting piece 2, the welding positioning hole is penetrated through the electrode connecting piece 2, specifically, a laser is used. When the electrode connection piece 2 and the pole column 11 are connected by welding, the laser positioning is required by means of the welding positioning hole, and the welding efficiency can be obviously improved by laser welding, so as to further improve the processing efficiency of the battery module provided by the present application. .
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above description is only the preferred embodiment of the present application, and is not intended to limit the present application, and various changes and modifications may be made to the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Claims (10)

  1. 一种电池模组，其特征在于，包括：A battery module, comprising:
    单体电池，所述单体电池包括极柱；a unit cell comprising a pole;
    电极连接片，所述电极连接片与所述极柱连接，An electrode connecting piece, the electrode connecting piece is connected to the pole,
    其中，所述极柱和所述电极连接片中，一者上设置有定位凸台，另一者上设置有定位孔，所述定位凸台和所述定位孔定位配合。Wherein, one of the pole and the electrode connecting piece is provided with a positioning boss, and the other is provided with a positioning hole, and the positioning boss and the positioning hole are positioned and matched.
  2. 根据权利要求1所述的电池模组，其特征在于，所述极柱上设置有所述定位凸台，所述电极连接片设置有所述定位孔。The battery module according to claim 1, wherein the pole is provided with the positioning boss, and the electrode connecting piece is provided with the positioning hole.
  3. 根据权利要求2所述的电池模组，其特征在于，所述极柱包括第一极柱和第二极柱，所述电极连接片包括第一连接部和第二连接部，所述第一连接部与所述第二连接部连接；The battery module according to claim 2, wherein the pole includes a first pole and a second pole, and the electrode connecting piece comprises a first connecting portion and a second connecting portion, the first a connecting portion is connected to the second connecting portion;
    所述第一连接部与所述第一极柱连接，所述第二连接部与所述第二极柱连接；The first connecting portion is connected to the first pole, and the second connecting portion is connected to the second pole;
    所述第一连接部或所述第二连接部上设置有所述定位孔，所述第一极柱或所述第二极柱上设置有所述定位凸台。The positioning hole is disposed on the first connecting portion or the second connecting portion, and the positioning boss is disposed on the first pole or the second pole.
  4. 根据权利要求3所述的电池模组，其特征在于，所述电极连接片上仅设置有一个所述定位孔，所述极柱上仅设置一个所述定位凸台。The battery module according to claim 3, wherein only one of the positioning holes is disposed on the electrode connecting piece, and only one of the positioning bosses is disposed on the pole.
  5. 根据权利要求3所述的电池模组，其特征在于，所述电极连接片还包括调节部，The battery module according to claim 3, wherein the electrode connecting piece further comprises an adjusting portion.
    所述第一连接部通过所述调节部与所述第二连接部连接，所述调节部向靠近或远离所述单体电池的方向凸出。The first connecting portion is connected to the second connecting portion through the adjusting portion, and the adjusting portion protrudes toward or away from the unit cell.
  6. 根据权利要求2所述电池模组，其特征在于，所述定位孔为贯穿孔，沿所述电极连接片的厚度方向，所述定位孔贯穿所述电极连接片。The battery module according to claim 2, wherein the positioning hole is a through hole, and the positioning hole penetrates the electrode connecting piece along a thickness direction of the electrode connecting piece.
  7. 根据权利要求6所述的电池模组，其特征在于，所述定位凸台的上表面与所述电极连接片的上表面平齐。The battery module according to claim 6, wherein an upper surface of the positioning boss is flush with an upper surface of the electrode connecting piece.
  8. 根据权利要求2所述的电池模组，其特征在于，所述定位孔为长条孔，所述定位孔的长度方向与所述电极连接片的长度方向相同。The battery module according to claim 2, wherein the positioning hole is a long hole, and a length direction of the positioning hole is the same as a length direction of the electrode connecting piece.
  9. 根据权利要求2所述的电池模组，其特征在于，沿所述电极连接片的厚度方向，所述定位凸台设置在所述极柱的上表面。The battery module according to claim 2, wherein the positioning boss is disposed on an upper surface of the pole in a thickness direction of the electrode tab.
  10. 根据权利要求2所述的电池模组，其特征在于，所述定位凸台和所述极柱一体成型。The battery module according to claim 2, wherein the positioning boss and the pole are integrally formed.
PCT/CN2018/080691 2018-01-31 2018-03-27 Battery module WO2019148616A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201638864U (en) * 2010-04-01 2010-11-17 力柏时代锂动力科技（北京）有限公司 Variably-connected battery box
CN201838652U (en) * 2010-07-16 2011-05-18 天能电池集团有限公司 Convenient-to-use storage battery
CN204966572U (en) * 2015-09-23 2016-01-13 北汽福田汽车股份有限公司 Battery module connection piece and have its power battery package

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201638864U (en) * 2010-04-01 2010-11-17 力柏时代锂动力科技（北京）有限公司 Variably-connected battery box
CN201838652U (en) * 2010-07-16 2011-05-18 天能电池集团有限公司 Convenient-to-use storage battery
CN204966572U (en) * 2015-09-23 2016-01-13 北汽福田汽车股份有限公司 Battery module connection piece and have its power battery package

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