WO2019148643A1 - 汇流排以及电池模组 - Google Patents

汇流排以及电池模组 Download PDF

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Publication number
WO2019148643A1
WO2019148643A1 PCT/CN2018/081973 CN2018081973W WO2019148643A1 WO 2019148643 A1 WO2019148643 A1 WO 2019148643A1 CN 2018081973 W CN2018081973 W CN 2018081973W WO 2019148643 A1 WO2019148643 A1 WO 2019148643A1
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WIPO (PCT)
Prior art keywords
strip
bus bar
electrode post
limiting
shaped body
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Ceased
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PCT/CN2018/081973
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English (en)
French (fr)
Inventor
王晓帆
章华
秦峰
马林
游志毅
王志
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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Publication of WO2019148643A1 publication Critical patent/WO2019148643A1/zh
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • 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 utility model relates to the technical field of secondary batteries, in particular to a bus bar and a battery module.
  • the power battery is also called a secondary battery and is a rechargeable battery. Power batteries are widely used. Low-capacity power batteries can be used in small electric vehicles, and high-capacity power batteries can be used in large electric vehicles such as hybrid or electric vehicles.
  • power batteries were used in groups, a plurality of power batteries were packaged to form a battery module. Two or more adjacent power cells are connected in series via a bus bar. The electrode poles of the bus bar and the power battery are usually connected and fixed by welding.
  • the currently used bus bar is unconstrained by itself during the soldering process, thereby causing its position to sway, causing the relative positions of the bus bar and the electrode post to change, which adversely affects the soldering operation.
  • the embodiment of the present invention provides a bus bar and a battery module.
  • the bus bar of the utility model can realize the self-limiting position, and the bus bar itself and the electrode pole column can be ensured that the relative position of the bus bar is not changed, and the bus bar and the electrode pole are convenient to be fixed without using the additional clamp or the limiting member to limit the bus bar.
  • the column connection is fixed.
  • an embodiment of the present invention provides a bus bar for electrically connecting to an electrode post of a single cell, including:
  • the strip-shaped body comprising at least two connecting portions successively distributed along its length direction, each connecting portion being electrically connectable to a top end of the electrode post; the limiting leg being connected to the strip-shaped body and strip-shaped
  • the main body is intersected, and the limiting leg extends in the thickness direction of the strip main body, and the limiting leg is used for limiting the strip main body so that the relative position of the connecting portion and the electrode post is unchanged.
  • the strip-shaped body includes two end portions that are opposite in the longitudinal direction, and at least one of the two end portions is provided with a limit leg.
  • the limit legs are disposed on both ends.
  • the strip-shaped body includes two long sides that are opposite in the width direction thereof, and at least one of the two long sides is provided with a limit leg.
  • the two long sides are each provided with a limit leg.
  • the limiting leg is perpendicular to the strip body, and the limiting leg is a sheet-like structure.
  • the limit legs extend toward one side of the strip body.
  • the strip-shaped body further includes an arched buffer portion disposed between the adjacent two connecting portions.
  • the strip body and the limiting leg are integrally formed structures.
  • the bus bar of the embodiment of the present invention has a limiting leg for defining its own position, so that the position of the bus bar itself can be stabilized by the limiting leg before the electrical connection with the electrode pole, and the bus bar is prevented from being shaken.
  • the relative position of the electrode pole is changed to ensure smooth welding of the bus bar and the electrode post, and the welding quality is good, thereby improving the working efficiency of the bus bar and the electrode post connection.
  • an embodiment of the present invention provides a battery module, including:
  • each of the unit cells including a top cover plate and an electrode pole protruding from the top cover plate, the upper surface of the top cover plate having an annular protrusion surrounding the electrode post; the bus bar as described above
  • the strip body is electrically connected to the top end of the electrode post, and the limit leg is in contact with the annular protrusion or the outer peripheral surface of the electrode post.
  • FIG. 1 is a schematic view showing the overall structure of a bus bar in the first embodiment of the present invention
  • FIG. 2 is a schematic view showing the overall structure of a top cover assembly according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing the overall structure of another bus bar in the first embodiment of the present invention.
  • FIG. 4 is a schematic view showing the overall structure of a bus bar in the second embodiment of the present invention.
  • Figure 5 is a schematic view showing the overall structure of another bus bar in the second embodiment of the present invention.
  • Figure 6 is a schematic view showing the overall structure of a bus bar in the third embodiment of the present invention.
  • Strip-shaped body 11, connecting portion; 12, arched buffer portion; 13, end portion; 14, long side; X, length direction; Y, width direction;
  • top cover 31, annular protrusion
  • installation should be understood broadly, unless otherwise explicitly defined and limited. For example, it may be a fixed connection or Removable connection, or integral connection; can be directly connected or indirectly connected through an intermediate medium.
  • connection should be understood broadly, unless otherwise explicitly defined and limited. For example, it may be a fixed connection or Removable connection, or integral connection; can be directly connected or indirectly connected through an intermediate medium.
  • specific meanings of the above terms in the present invention can be understood as the case may be.
  • bus bar of the embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 6.
  • Fig. 1 schematically shows the overall structure of a bus bar in the first embodiment of the present invention.
  • Fig. 2 schematically shows the overall structure of a top cover assembly in accordance with an embodiment of the present invention.
  • Fig. 3 schematically shows the overall structure of another bus bar in the first embodiment of the present invention.
  • Fig. 4 is a view schematically showing the overall structure of a bus bar in the second embodiment of the present invention.
  • Fig. 5 schematically shows the overall structure of another bus bar in the second embodiment of the present invention.
  • Fig. 6 is a view schematically showing the overall structure of a bus bar in the third embodiment of the present invention.
  • the bus bar of the embodiment of the present invention is applied to a single battery.
  • the electrode poles of the two or more unit cells disposed adjacently are electrically connected through the bus bar so that two or more adjacent cells are connected in series/parallel.
  • the bus bar of the embodiment of the present invention includes a strip-shaped main body 1 having a predetermined length and width, and a limit leg 2 connected to the strip-shaped main body 1.
  • the strip-shaped body 1 includes two connecting portions 11 which are successively distributed in the longitudinal direction X thereof, and can be used to connect the electrode poles of two adjacent single cells. It is easy to understand that the strip-shaped body 1 may include three or more connecting portions 11 for electrically connecting the electrode poles of adjacent three or more unit cells at the same time. Each of the connecting portions 11 can be electrically connected to the top end of the electrode post, for example, the two are welded by laser welding.
  • the bus bar of the embodiment can be self-limiting through the limiting leg 2 to ensure that the bus bar is at a predetermined position to be connected, and the overall position is kept stable, and does not sway relative to the electrode pole, thereby facilitating the bus bar.
  • the connecting portion 11 and the electrode post are smoothly welded, and the welding quality is ensured to be reliable.
  • the unit cell of the present embodiment includes a top cover 3 and an electrode post 4 disposed on the top cover 3.
  • An upper surface of the top cover 3 facing the external environment is provided with a through hole and an annular projection 31 surrounding the through hole.
  • the tip end of the electrode post 4 matches the shape of the annular projection 31 and is disposed in the annular projection 31.
  • the annular projection 31 has a rectangular structure.
  • the tip end of the electrode post 4 that mates with the annular projection 31 is also rectangular.
  • the upper surface is protruded from the outer peripheral surface of the annular projection 31, so that the bus bar is entirely restrained and can no longer be shaken with respect to the electrode post 4. Then, the connection portion 11 included in the bus bar and the tip end of the electrode post 4 are soldered.
  • the limiting leg 2 plays a limiting role on the whole bus bar, which is convenient for the welding operation to be completed quickly; on the other hand, after the welding work is completed, the limiting leg 2 Can provide buffering capacity for the busbar as a whole.
  • the limiting leg 2 can generate a resistance to cancel the vibration, and the vibration is prevented from causing looseness between the connecting portion 11 and the electrode post 4 included in the bus bar.
  • the strip-like body 1 of the present embodiment includes two end portions 13 opposed in the longitudinal direction X.
  • a limit leg 2 is provided on at least one of the two end portions 13.
  • a limit leg 2 is provided on one of the two ends 13 of the strip body 1.
  • the limiting legs 2 of the bus bar of the present embodiment are abutted against the annular protrusion 31 included in one of the adjacent two single cells or
  • the outer peripheral surface of the top end of the electrode post 4 forms a contact surface with the annular protrusion 31 or the outer peripheral surface of the top end of the electrode post 4, thereby realizing the positioning of the bus bar, preventing external force from acting on the bus bar and making the bus bar easy.
  • Shaking occurs in the ground, and the bus bar is prevented from moving in its own length direction X and the relative position of the electrode post 4 is changed, thereby ensuring that the connecting portion 11 of the bus bar is aligned with the tip end of the electrode post 4 and opposed to each other.
  • the position does not change, which is beneficial to improve welding efficiency and welding quality.
  • limit legs 2 are provided on both end portions 13 of the strip body 1.
  • a limit leg 2 is provided on each end 13.
  • the two limit legs 2 are spaced apart in the longitudinal direction X of the strip body 1.
  • the two limiting legs 2 can each abut against the annular projection 31 included in one of the adjacent two single cells or the outer peripheral surface of the tip end of the electrode post 4, and the electrode posts 4 of the two single cells Located between the two limit legs 2.
  • the bus bar can be stuck on the annular protrusion 31 or the electrode post 4 included in each of the adjacent two single cells by the two limit legs 2, so that the bus bar cannot move along the length direction X of the strip body 1. Further, the reliability of the positioning fit between the bus bar and the electrode post 4 is further improved, and the relative position of the connecting portion 11 and the electrode post 4 included on the bus bar is stabilized, which is beneficial to improving the welding work efficiency and the welding quality. .
  • the limiting leg 2 of the embodiment and the strip-shaped main body 1 are perpendicular to each other, which facilitates the overall processing and manufacturing of the bus bar and improves the positioning accuracy of the bus bar.
  • the number of the limiting legs 2 provided at one end of the strip-shaped main body 1 is not limited, and may be one or two or more.
  • the limiting leg 2 of the embodiment is a sheet-like structure, so as to be able to easily form a surface contact with the annular projection 31 or the outer circumferential surface of the tip end of the electrode post 4, the contact area is large, the positioning effect is good, and the position of the bus bar is stabilized. Sex, which is beneficial to improve welding efficiency and welding quality.
  • the limiting leg 2 is a rectangular sheet structure.
  • the region of the limiting leg 2 for contacting the annular projection 31 or the outer peripheral surface of the tip end of the electrode post 4 corresponds to the contour of the outer peripheral surface of the annular projection 31 or the tip end of the electrode post 4 to ensure the limit.
  • the leg 2 is in close contact with the annular projection 31 or the outer peripheral surface of the tip end of the electrode post 4, so that the bus bar achieves a good self-limiting capability.
  • the limiting leg 2 of the present embodiment extends from the strip-shaped main body 1 toward one side of the strip-shaped main body 1 to form an L-shaped structure between the limiting leg 2 and the strip-shaped main body 1, or two toward the strip-shaped main body 1.
  • the extension is such that a T-shaped structure is formed between each of the limiting legs 2 and the strip-like body 1.
  • the limiting leg 2 extends from the strip body 1 toward one side of the strip body 1 to ensure that the surface of the bus bar facing away from the electrode post 4 is flat, to avoid positional interference of the limiting leg 2 with other structural members.
  • the limiting leg 2 and the strip-shaped main body 1 of the embodiment are an integrally formed structure, which facilitates the overall processing and manufacturing of the bus bar by using a machining, a molding process or a stamping process, and reduces the processing difficulty and the processing cost.
  • the integrally formed bus bar itself has high strength, and the included limit leg 2 or the strip body 1 is less likely to be damaged or deformed.
  • the strip-shaped body 1 of the present embodiment further includes an arched buffer portion 12 disposed between the adjacent two connecting portions 11.
  • the strip-shaped body 1 having the arched buffer portion 12 has a predetermined amount of elastic deformation in its own longitudinal direction X, and on the other hand, the arched buffer portion 12 can absorb when the bus bar is subjected to a force in the longitudinal direction X thereof.
  • the force is such that the length of the entire bus bar can be elongated or shortened, thereby ensuring that no large shear force is generated between the two connecting portions 11 of the bus bar and the adjacent two electrode posts 4, and the connection is avoided.
  • both end portions 13 of the strip-shaped main body 1 included in the bus bar are provided with a limiting leg 2.
  • the distance between the two limit legs 2 is increased by applying a pulling force along the length direction X of the bus bar, thereby further The distance between the two limiting legs 2 can adapt and match the dimensional change of the electrode post 4, thereby improving the versatility and adaptability of the bus bar.
  • the strip-like body 1 of the present embodiment includes two long sides 14 opposed in the width direction Y thereof.
  • a limit leg 2 is provided on at least one of the two long sides 14.
  • a limit leg 2 is provided on one of the two long sides 14 of the strip body 1.
  • the number of limit legs 2 may be one or more.
  • the plurality of limit legs 2 are arranged side by side along the longitudinal direction X of the strip body 1.
  • the limiting legs 2 of the bus bar of the present embodiment are abutted against the annular protrusion 31 included in one of the adjacent two single cells or
  • the outer peripheral surface of the top end of the electrode post 4 forms a contact surface with the outer peripheral surface, thereby realizing the positioning of the bus bar, preventing an external force from acting on the bus bar to easily cause the bus bar to sway easily, and also avoiding the bus bar at its own width.
  • the movement in the direction Y changes and the relative position of the electrode post 4 changes, thereby ensuring that the connection portion 11 of the bus bar and the tip end of the electrode post 4 are aligned, and the relative positions of the electrodes are not changed, which is advantageous for improving the welding work efficiency. And welding quality.
  • the limiting legs 2 are disposed on the two long sides 14 of the strip body 1 .
  • the strip-like body 1 includes two connecting portions 11, and the number and position of the limiting legs 2 provided on each of the long sides 14 correspond to the number and position of the connecting portions 11.
  • the limit legs 2 provided on the two long sides 14 are spaced apart in the width direction Y of the strip body 1.
  • the limit legs 2 provided on the two long sides 14 can each abut against the annular projection 31 or the outer peripheral surface of the electrode post 4 included in one of the adjacent two unit cells, thereby making the two monomers
  • the electrode post 4 of the battery is located between the limit legs 2 provided on the two long sides 14.
  • the bus bar can be stuck on the annular protrusion 31 or the electrode post 4 included in each of the adjacent two unit cells through the two limiting legs 2 at the same time, so that the bus bar cannot move along the width direction Y of the strip body 1 Further, the reliability of the positioning fit between the bus bar and the electrode post 4 is further improved, and the relative position of the connecting portion 11 and the electrode post 4 included on the bus bar is stabilized, which is beneficial to improving the welding work efficiency and the welding quality. .
  • the case where the limit legs 2 are provided on one of the two end portions 13 of the strip-shaped main body 1 included in the bus bar has been described.
  • the case where the limit legs 2 are provided on the two long sides 14 of the strip-shaped main body 1 included in the bus bar has been described.
  • differences from the first embodiment and the second embodiment will be mainly described, and the same configurations will not be repeatedly described in the embodiment.
  • the strip-shaped main body 1 of the present embodiment includes two end portions 13 opposed in the longitudinal direction X thereof and two long sides 14 opposed in the width direction Y thereof.
  • the two end portions 13 and the two long sides 14 are respectively provided with the limiting legs 2.
  • Each of the limit legs 2 is annularly distributed. In this embodiment, after the two or more single cells are arranged side by side in one direction, the limit legs 2 of the bus bar of the embodiment are abutted against one of the adjacent two single cells.
  • the annular protrusion 31 or the outer peripheral surface of the top end of the electrode post 4 forms a contact surface with the annular protrusion 31 or the outer peripheral surface of the top end of the electrode post 4, thereby realizing the positioning of the bus bar and preventing an external force from acting on the bus bar
  • the bus bar is easily swayed, and the bus bar is prevented from moving in the longitudinal direction X and the width direction Y, and the relative position of the bus bar 4 is changed, thereby ensuring the connection portion 11 and the electrode post 4 of the bus bar.
  • the top positions are aligned and the positions relative to each other are not changed, which is advantageous for improving the welding work efficiency and the welding quality.
  • the limit leg 2 is capable of restricting movement of the bus bar as a whole in its width direction Y and length direction X.
  • one of the two ends 13 and one of the two long sides 14 are each provided with a limit leg 2 .
  • one of the two end portions 13 and the two long sides 14 are respectively provided with a limiting leg 2 .
  • one of the two end portions 13 and the two long sides 14 are respectively provided with a limit leg 2.
  • the bus bar of the embodiment of the present invention has a limiting leg 2 for defining its own position, so that the bus bar itself has self-positioning capability.
  • the stability of the position of the bus bar can be ensured by the limit leg 2, and the relative position of the bus bar and the electrode post 4 is prevented from being changed by the sway of the bus bar, thereby ensuring that the relative position of the bus bar and the electrode post 4 are changed.
  • the bus bar and the electrode post 4 are smoothly welded and the welding quality is good.
  • the present invention also provides a battery module comprising a plurality of unit cells arranged side by side and a bus bar as in the above embodiment.
  • Each of the unit cells includes a top cover 3 and an electrode post 4 projecting from the top cover 3.
  • the upper surface of the top cover 3 has an annular projection 31 surrounding the electrode post 4.
  • the strip main body 1 is electrically connected to the top end of the electrode post 4, and the limit leg 2 is in contact with the annular projection 31 or the outer peripheral surface of the tip end of the electrode post 4.
  • the limiting leg 2 plays a limiting role on the bus bar, facilitating the smooth and rapid completion of the welding operation of the bus bar and the electrode post 4; After the work, the limit foot 2 can provide a buffering force for the bus bar as a whole.
  • the limiting leg 2 can generate a resistance to cancel the vibration, and the vibration is prevented from causing looseness between the connecting portion 11 and the electrode post 4 included in the bus bar.

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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)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本实用新型涉及一种汇流排以及电池模组。汇流排，用于与单体电池的电极极柱电连接，其包括：条状主体，条状主体包括沿自身长度方向相继分布的至少两个连接部，每个连接部能够与电极极柱的顶端电连接；限位支脚，与条状主体相连接、且与条状主体相交设置，限位支脚在条状主体的厚度方向上延伸，限位支脚用于对条状主体限位，以使连接部与电极极柱相对位置不变。本实用新型的汇流排能够实现自限位，不需要额外使用夹具或限位构件对汇流排进行限位，就能够保证汇流排自身与电极极柱彼此相对位置不变，便于汇流排与电极极柱连接固定。

Description

汇流排以及电池模组 技术领域
本实用新型涉及二次电池技术领域，特别是涉及一种汇流排以及电池模组。
背景技术
随着技术的发展，动力电池应用范围越来越广，涉及生产或生活。动力电池也称二次电池，为可再充电电池。动力电池被广泛地使用。低容量的动力电池可用于小型电动车辆，高容量的动力电池可用于大型电动车辆，例如混合动力汽车或电动汽车。以往动力电池成组使用时，多个动力电池被封装形成电池模组。相邻两个或者多个动力电池通过汇流排(Busbar)串联。汇流排与动力电池的电极极柱通常采用焊接的方式连接固定。然而，目前使用的汇流排在焊接过程中由于自身不受约束，从而导致自身位置发生晃动，使得汇流排和电极极柱的相对位置发生改变，对焊接操作产生不良影响。
实用新型内容
本实用新型实施例提供一种汇流排以及电池模组。本实用新型的汇流排能够实现自限位，不需要额外使用夹具或限位构件对汇流排进行限位，就能够保证汇流排自身与电极极柱彼此相对位置不变，便于汇流排与电极极柱连接固定。
一方面，本实用新型实施例提出了一种汇流排，用于与单体电池的电极极柱电连接，其包括：
条状主体，条状主体包括沿自身长度方向相继分布的至少两个连接部，每个连接部能够与电极极柱的顶端电连接；限位支脚，与条状主体相连接、且与条状主体相交设置，限位支脚在条状主体的厚度方向上延伸， 限位支脚用于对条状主体限位，以使连接部与电极极柱相对位置不变。
根据本实用新型实施例的一个方面，条状主体包括在长度方向上相对的两个端部，两个端部中的至少一者设置限位支脚。
根据本实用新型实施例的一个方面，两个端部上均设置限位支脚。
根据本实用新型实施例的一个方面，条状主体包括在自身宽度方向上相对的两个长边，两个长边中的至少一者上设置限位支脚。
根据本实用新型实施例的一个方面，两个长边均设置限位支脚。
根据本实用新型实施例的一个方面，限位支脚与条状主体垂直，限位支脚为片状结构。
根据本实用新型实施例的一个方面，限位支脚朝条状主体的一侧延伸。
根据本实用新型实施例的一个方面，条状主体还包括设置于相邻两个连接部之间的拱形缓冲部。
根据本实用新型实施例的一个方面，条状主体与限位支脚为一体成型结构。
本实用新型实施例的汇流排具有用于限定自身位置的限位支脚，从而在与电极极柱进行电连接之前，能够通过限位支脚保证汇流排自身位置的稳定，避免汇流排发生晃动而导致与电极极柱的相对位置发生变化，从而保证汇流排和电极极柱顺利进行焊接，并保证焊接质量良好，进而提高汇流排和电极极柱连接工作效率。
另一个方面，本实用新型实施例提供一种电池模组，其包括：
多个并排设置的单体电池，每个单体电池包括顶盖板以及凸出顶盖板的电极极柱，顶盖板的上表面具有环绕电极极柱的环形凸起；如上述的汇流排，条状主体与电极极柱的顶端电连接，限位支脚与环形凸起或电极极柱的外周表面相接触。
附图说明
下面将参考附图来描述本实用新型示例性实施例的特征、优点和技术效果。
图1是本实用新型第一实施例中一种汇流排的整体结构示意图；
图2是本实用新型一实施例的顶盖组件的整体结构示意图；
图3是本实用新型第一实施例中另一种汇流排的整体结构示意图；
图4是本实用新型第二实施例中一种汇流排的整体结构示意图；
图5是本实用新型第二实施例中另一种汇流排的整体结构示意图；
图6是本实用新型第三实施例中一种汇流排的整体结构示意图。
在附图中，附图并未按照实际的比例绘制。
标记说明：
1、条状主体；11、连接部；12、拱形缓冲部；13、端部；14、长边；X、长度方向；Y、宽度方向；
2、限位支脚；
3、顶盖板；31、环形凸起；
4、电极极柱。
具体实施方式
下面结合附图和实施例对本实用新型的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本实用新型的原理，但不能用来限制本实用新型的范围，即本实用新型不限于所描述的实施例。
在本实用新型的描述中，需要说明的是，除非另有说明，“多个”的含义是两个或两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本实用新型的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，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，可视具体情况理解上述术语在本实用新型中的具体含义。
为了更好地理解本实用新型，下面结合图1至图6对本实用新型实施例的汇流排进行详细描述。
图1示意性地显示了本实用新型第一实施例中一种汇流排的整体结构。图2示意性地显示了本实用新型一实施例的顶盖组件的整体结构。图3示意性地显示了本实用新型第一实施例中另一种汇流排的整体结构。图4示意性地显示了本实用新型第二实施例中一种汇流排的整体结构。图5示意性地显示了本实用新型第二实施例中另一种汇流排的整体结构。图6示意性地显示了本实用新型第三实施例中一种汇流排的整体结构。
本实用新型实施例的汇流排应用于单体电池。相邻设置的两个或多个单体电池各自的电极极柱通过汇流排电连接，以使相邻的两个或多个单体电池实现串联/并联。
如图1所示，本发明实施例的汇流排包括具有预定长度和宽度的条状主体1以及与条状主体1相连接的限位支脚2。条状主体1包括沿自身长度方向X相继分布的两个连接部11，能够用于连接相邻两个单体电池的电极极柱。容易理解地，条状主体1可以包括三个以上的连接部11，以用于同时将相邻的三个以上单体电池的电极极柱电连接。每个连接部11能够与电极极柱的顶端电连接，例如两者通过激光焊接方式焊接连接。
本实施例的汇流排能够通过限位支脚2实现自限位，以保证汇流排处于待连接的预定位置，并保持整体位置稳定，不会相对于电极极柱发生晃动，从而有利于汇流排上的连接部11与电极极柱顺利进行焊接，并保证焊接质量可靠。
如图2所示，本实施例的单体电池包括顶盖板3以及设置于顶盖板3上的电极极柱4。顶盖板3上朝向外部环境的上表面设置有通孔以及环绕该通孔的环形凸起31。电极极柱4的顶端与环形凸起31的形状相匹配、且设置于环形凸起31内。可选地，环形凸起31为矩形结构。电极极柱4与环形凸起31相配合的顶端也为矩形结构。当需要将汇流排与电极极柱4 处于环形凸起31内的顶端进行焊接时，首先将汇流排所包括的限位支脚2抵靠于环形凸起31的外周表面或者电极极柱4的顶端上凸出于环形凸起31部分的外周表面上，从而汇流排整体受到限位，不再能够相对电极极柱4发生晃动。然后再对汇流排所包括的连接部11与电极极柱4的顶端进行焊接操作。
一方面，在汇流排与电极极柱4焊接过程中，限位支脚2对汇流排整体起到限位作用，便于快速地完成焊接操作；另一方面，在完成焊接工作后，限位支脚2能够为汇流排整体提供缓冲力。在单体电池受到外力发生振动时，限位支脚2能够产生阻力以抵消振动，避免振动导致汇流排所包括的连接部11与电极极柱4之间发生松动。
以下通过具体实施例来进一步地清楚描述本技术方案，但以下实施例并不限定本实用新型的保护范围。
第一实施例：
结合图1和图3所示，本实施例的条状主体1包括在长度方向X上相对的两个端部13。两个端部13中的至少一者上设置限位支脚2。
可选地，条状主体1的两个端部13中的一者上设置限位支脚2。在将两个以上的单体电池沿一方向并排设置后，将本实施例的汇流排的限位支脚2抵靠于相邻两个单体电池中的一者所包括的环形凸起31或电极极柱4顶端的外周表面上，并与环形凸起31或电极极柱4顶端的外周表面之间形成接触面，以此实现汇流排的定位，阻止外力作用于汇流排而使汇流排容易地发生晃动，也避免汇流排在自身长度方向X上发生移动而与电极极柱4的相对位置发生变化，从而保证汇流排的连接部11与电极极柱4的顶端位置对准、且彼此相对位置不发生变化，有利于提高焊接工作效率和焊接质量。
可选地，条状主体1的两个端部13上均设置限位支脚2。在一个示例中，每个端部13上设置一个限位支脚2。两个限位支脚2在条状主体1的长度方向X上间隔设置。两个限位支脚2能够各自抵靠于相邻两个单体电池中的一者所包括的环形凸起31或电极极柱4顶端的外周表面，并且两个单体电池的电极极柱4位于两个限位支脚2之间。汇流排同时通过两个 限位支脚2能够卡在相邻两个单体电池各自所包括的环形凸起31或电极极柱4上，使得汇流排无法沿条状主体1的长度方向X发生移动，进一步提高了汇流排与电极极柱4两者之间定位配合的牢靠性，保证汇流排上所包括的连接部11与电极极柱4相对位置的稳定，有利于提高焊接工作效率和焊接质量。
本实施例的限位支脚2与条状主体1相互垂直，便于汇流排整体加工制造和提高汇流排定位精准度。进一步地，条状主体1的一端设置的限位支脚2的个数不作限定，可以是一个或两个以上。本实施例的限位支脚2为片状结构，以能够容易地与环形凸起31或电极极柱4顶端的外周表面形成面接触，接触区域较大，定位效果好，提高汇流排的位置稳定性，有利于提高焊接工作效率和焊接质量。可选地，限位支脚2为矩形片状结构。容易理解地，限位支脚2用于与环形凸起31或电极极柱4顶端的外周表面相接触的区域与环形凸起31或电极极柱4顶端的外周表面轮廓相对应，以保证限位支脚2与环形凸起31或电极极柱4顶端的外周表面紧密接触，从而使得汇流排实现良好的自限位能力。
本实施例的限位支脚2从条状主体1上朝条状主体1的一侧延伸，以使限位支脚2和条状主体1之间形成L形结构，或者朝条状主体1的两个延伸，以使每个限位支脚2和条状主体1之间形成T形结构。优选地，限位支脚2从条状主体1上朝条状主体1的一侧延伸，保证汇流排背向电极极柱4的表面平整，避免限位支脚2与其他结构件发生位置干涉。
本实施例的限位支脚2和条状主体1为一体成型结构，方便采用机加工、模铸工艺或冲压工艺一次性完成汇流排的整体加工制造，降低加工难度和加工成本。另外，一体成型的汇流排自身强度高，所包括的限位支脚2或条状主体1不易发生损坏或变形。
本实施例的条状主体1还包括设置于相邻两个连接部11之间的拱形缓冲部12。具有拱形缓冲部12的条状主体1在自身长度方向X上具有预定的弹性变形量，一方面，在汇流排在受到沿自身长度方向X上的作用力时，拱形缓冲部12能够吸收该作用力，以使汇流排整体的长度可以伸长或缩短，从而保证汇流排的两个连接部11与相邻两个电极极柱4之间不 会产生较大的剪切力，避免连接部11与电极极柱4焊缝断裂而彼此脱离连接；另一方面，汇流排所包括的条状主体1的两个端部13均设置一个限位支脚2。在相邻两个单体电池各自所包括的电极极柱4的尺寸增大时，通过对汇流排施加沿自身长度方向X上的拉力来增大两个限位支脚2之间的距离，进而两个限位支脚2之间的距离能够适应和匹配电极极柱4的尺寸变化，从而提高了汇流排的通用性和适应能力。
第二实施例：
在第一实施例中，对汇流排所包括的条状主体1的两个端部13上设置一个或两个限位支脚2的情况进行了说明。在本实施例中，主要说明与第一实施例的不同之处，相同的结构在本实施例中不再重复说明。
结合图4和图5所示，本实施例的条状主体1包括在自身宽度方向Y上相对的两个长边14。两个长边14中的至少一者上设置限位支脚2。
可选地，条状主体1的两个长边14中的一者上设置限位支脚2。限位支脚2的数量可以是一个或者多个。限位支脚2的数量为多个时，多个限位支脚2沿条状主体1的长度方向X并排设置。在将两个以上的单体电池沿一方向并排设置后，将本实施例的汇流排的限位支脚2抵靠于相邻两个单体电池中的一者所包括的环形凸起31或电极极柱4顶端的外周表面上，并与外周表面之间形成接触面，以此实现汇流排的定位，阻止外力作用于汇流排而使汇流排容易地发生晃动，也避免汇流排在自身宽度方向Y上发生移动而与电极极柱4的相对位置发生变化，从而保证汇流排的连接部11与电极极柱4的顶端位置对准、且彼此相对位置不发生变化，有利于提高焊接工作效率和焊接质量。
可选地，条状主体1的两个长边14上均设置限位支脚2。在一个示例中，条状主体1包括两个连接部11、且每个长边14上设置的限位支脚2的数量和位置均与连接部11的数量和位置相对应。两个长边14上设置的限位支脚2在条状主体1的宽度方向Y上间隔设置。两个长边14上设置的限位支脚2能够各自抵靠于相邻两个单体电池中的一者所包括的环形凸起31或电极极柱4的外周表面，从而使得两个单体电池的电极极柱4位于两个长边14上设置的限位支脚2之间。汇流排同时通过两个限位支脚2能 够卡在相邻两个单体电池各自所包括的环形凸起31或电极极柱4上，使得汇流排无法沿条状主体1的宽度方向Y发生移动，进一步提高了汇流排与电极极柱4两者之间定位配合的牢靠性，保证汇流排上所包括的连接部11与电极极柱4相对位置的稳定，有利于提高焊接工作效率和焊接质量。
第三实施例：
在第一实施例中，对汇流排所包括的条状主体1的两个端部13中的一者上设置限位支脚2的情况进行了说明。在第二实施例中，对汇流排所包括的条状主体1的两个长边14上设置限位支脚2的情况进行了说明。在本实施例中，主要说明与第一实施例和第二实施例的不同之处，相同的结构在本实施例中不再重复说明。
本实施例的条状主体1所包括在自身长度方向X上相对的两个端部13以及在自身宽度方向Y上相对的两个长边14。
如图6所示，可选地，两个端部13以及两个长边14分别设置限位支脚2。各个限位支脚2呈环形分布。本实施例中，在将两个以上的单体电池沿一方向并排设置后，将本实施例的汇流排的限位支脚2抵靠于相邻两个单体电池中的一者所包括的环形凸起31或电极极柱4顶端的外周表面上，并与环形凸起31或电极极柱4顶端的外周表面之间形成接触面，以此实现汇流排的定位，阻止外力作用于汇流排而使汇流排容易地发生晃动，也避免汇流排在自身长度方向X以及宽度方向Y上发生移动而与电极极柱4的相对位置发生变化，从而保证汇流排的连接部11与电极极柱4的顶端位置对准、且彼此相对位置不发生变化，有利于提高焊接工作效率和焊接质量。
容易理解地，在以下可选实施例中，限位支脚2能够限制汇流排整体在自身宽度方向Y以及长度方向X上发生移动。
可选地，两个端部13中的一者以及两个长边14中的一者分别设置限位支脚2。
可选地，两个端部13中的一者以及两个长边14分别设置限位支脚2。
可选地，两个端部13以及两个长边14中的一者分别设置限位支脚 2。
本实用新型实施例的汇流排具有用于限定自身位置的限位支脚2，从而使得汇流排自身具有自定位能力。在汇流排与电极极柱4进行电连接之前，能够通过限位支脚2保证汇流排自身位置的稳定性，避免汇流排发生晃动而导致汇流排与电极极柱4的相对位置发生变化，从而保证汇流排和电极极柱4顺利进行焊接，并保证焊接质量良好。
本实用新型还提供一种电池模组，其包括多个并排设置的单体电池以及如上述实施例的汇流排。每个单体电池包括顶盖板3以及凸出顶盖板3的电极极柱4。顶盖板3的上表面具有环绕电极极柱4的环形凸起31。条状主体1与电极极柱4的顶端电连接，限位支脚2与环形凸起31或电极极柱4顶端的外周表面相接触。
一方面，在汇流排与电极极柱4焊接过程中，限位支脚2对汇流排起到限位作用，便于汇流排与电极极柱4顺利快速地完成焊接操作；另一方面，在完成焊接工作后，限位支脚2能够为汇流排整体提供缓冲力。在单体电池受到外力发生振动时，限位支脚2能够产生阻力以抵消振动，避免振动导致汇流排所包括的连接部11与电极极柱4之间发生松动。
虽然已经参考优选实施例对本实用新型进行了描述，但在不脱离本实用新型的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本实用新型并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (10)

  1. 一种汇流排，用于与单体电池的电极极柱电连接，其特征在于，包括：
    条状主体，所述条状主体包括沿自身长度方向相继分布的至少两个连接部，每个所述连接部能够与所述电极极柱的顶端电连接；
    限位支脚，与所述条状主体相连接、且与所述条状主体相交设置，所述限位支脚在所述条状主体的厚度方向上延伸，所述限位支脚用于对所述条状主体限位，以使所述连接部与所述电极极柱相对位置不变。
  2. 根据权利要求1所述的汇流排，其特征在于，所述条状主体包括在所述长度方向上相对的两个端部，两个所述端部中的至少一者设置所述限位支脚。
  3. 根据权利要求2所述的汇流排，其特征在于，两个所述端部上均设置所述限位支脚。
  4. 根据权利要求1或2所述的汇流排，其特征在于，所述条状主体包括在自身宽度方向上相对的两个长边，两个所述长边中的至少一者上设置所述限位支脚。
  5. 根据权利要求4所述的汇流排，其特征在于，两个所述长边均设置所述限位支脚。
  6. 根据权利要求1所述的汇流排，其特征在于，所述限位支脚与所述条状主体垂直，所述限位支脚为片状结构。
  7. 根据权利要求1所述的汇流排，其特征在于，所述限位支脚朝所述条状主体的一侧延伸。
  8. 根据权利要求1所述的汇流排，其特征在于，所述条状主体还包括设置于相邻两个所述连接部之间的拱形缓冲部。
  9. 根据权利要求1所述的汇流排，其特征在于，所述条状主体与所 述限位支脚为一体成型结构。
  10. 一种电池模组，其特征在于，包括：
    多个并排设置的单体电池，每个所述单体电池包括顶盖板以及凸出所述顶盖板的电极极柱，所述顶盖板的上表面具有环绕所述电极极柱的环形凸起；
    如权利要求1至9任一项所述的汇流排，所述条状主体与所述电极极柱的顶端电连接，所述限位支脚与所述环形凸起或所述电极极柱的外周表面相接触。
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