WO2022077912A1 - 动力电池顶盖组件以及动力电池 - Google Patents

动力电池顶盖组件以及动力电池 Download PDF

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Publication number
WO2022077912A1
WO2022077912A1 PCT/CN2021/096117 CN2021096117W WO2022077912A1 WO 2022077912 A1 WO2022077912 A1 WO 2022077912A1 CN 2021096117 W CN2021096117 W CN 2021096117W WO 2022077912 A1 WO2022077912 A1 WO 2022077912A1
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WO
WIPO (PCT)
Prior art keywords
top cover
power battery
positive pole
cover plate
cover assembly
Prior art date
Application number
PCT/CN2021/096117
Other languages
English (en)
French (fr)
Inventor
马亚强
徐卫东
Original Assignee
厦门海辰新能源科技有限公司
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Application filed by 厦门海辰新能源科技有限公司 filed Critical 厦门海辰新能源科技有限公司
Publication of WO2022077912A1 publication Critical patent/WO2022077912A1/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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • 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 disclosure relates to the technical field of power batteries, and in particular, to a power battery top cover assembly and a power battery.
  • power batteries are more and more widely used because of their energy saving, environmental protection and pollution-free characteristics.
  • power batteries can be used in many application fields such as electric vehicles and electronic equipment.
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art.
  • the present disclosure proposes a power battery top cover assembly, which can avoid short circuits, has good safety, and has a long service life.
  • the present disclosure also proposes a power battery, including the above-mentioned battery top cover assembly.
  • a power battery top cover assembly includes a cover plate assembly, a positive electrode column, and a negative electrode column.
  • the cover plate assembly includes a top cover plate and a lower insulating member, the lower insulating member and the top cover plate are stacked and arranged, the cover plate assembly has a first mounting hole and a second mounting hole; the positive pole is passed through in the first installation hole, and the positive pole is electrically connected to the top cover plate; the negative pole pole is penetrated through the second installation hole, and the negative pole pole is insulated from the top cover plate.
  • the top cover assembly of the power battery by providing a first installation hole in the cover plate assembly for the positive pole to pass through, and providing a second installation hole in the cover plate assembly for the negative pole to pass through, it can facilitate the installation of the positive pole.
  • the positioning and limit of the negative pole and the negative pole can ensure the reliability of the installation of the positive pole and the negative pole, thereby improving the safety performance and service life of the power battery top cover assembly.
  • the positive pole is electrically connected to the top cover plate, and the negative pole pole is insulated from the top cover plate, which can avoid the occurrence of a short circuit.
  • the positive pole is welded to the top cover plate.
  • the welding seam between the positive pole and the top cover plate surrounds the outer circumference of the positive pole.
  • the power battery top cover assembly further includes an upper insulating member, the upper insulating member is sheathed on the negative pole, and the upper insulating member is located between the negative pole and the second installation hole, to insulate the negative pole and the top cover.
  • the negative pole includes a base and a cylinder, the base is located at one end of the cylinder and is connected, and the base is located at a side of the lower insulating member away from the top cover plate , the cylinder is penetrated through the first mounting hole,
  • the power battery top cover assembly further includes an insulating sealing member, the insulating sealing member is sleeved on the cylinder, and the insulating sealing member is located between the base and the lower insulating member.
  • the configuration of the positive pole is the same as the construction of the negative pole.
  • the insulating seal is a rubber seal.
  • the top cover plate is made of aluminum 3003 material
  • the positive pole is made of aluminum 1060 material.
  • the power battery top cover assembly further includes a first bus bar and a second bus bar, the first bus bar is electrically connected to the top of the positive electrode column, and the second bus bar is electrically connected to the negative electrode column top electrical connection.
  • the positive pole and the first bus bar are laser welded.
  • the power battery top cover assembly further includes a first adapter piece and a second adapter piece, the first adapter piece is laser welded to the bottom of the positive pole, and the second adapter piece is laser welded. The bottom is laser welded to the bottom of the negative pole.
  • the thickness of the positive pole is greater than the sum of the penetration depths of the first transition piece and the first busbar.
  • the power battery top cover assembly further includes a first adapter piece and a second adapter piece, the positive pole and the first adapter piece are integrally formed; or, the negative pole and the first adapter The two adapters are integrally formed.
  • the positive pole is configured as a cylindrical shape; alternatively, the negative pole is configured as a cylindrical shape.
  • the positive pole column has a first liquid injection hole for liquid injection, and the first liquid injection hole extends along the axis direction of the positive pole column; or, the negative pole column has a liquid injection hole for liquid injection The second liquid injection hole extends along the axial direction of the negative electrode column.
  • a power battery according to an embodiment of the present disclosure includes the power battery top cover assembly as described above.
  • FIG. 1 is an exploded view of a power battery top cover assembly according to an embodiment of the present disclosure.
  • cover plate assembly 10 top cover plate 1; first mounting hole 11; second mounting hole 12;
  • Positive pole 2 First liquid injection hole 21; Negative pole column 3; Base 31; Cylinder 32; Second liquid injection hole 33;
  • the first adapter piece 81 the second adapter piece 82 .
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature. Further, in the description of the present disclosure, unless otherwise specified, "plurality" means two or more.
  • the following describes a power battery top cover assembly 100 according to an embodiment of the present disclosure with reference to FIG. 1 , including a cover plate assembly 10 , a positive pole 2 , and a negative pole 3 .
  • the cover plate assembly 10 includes a top cover plate 1 and a lower insulating member 5 .
  • the lower insulating member 5 is stacked on the top cover plate 1 , and the cover plate assembly 10 has a first mounting hole 11 and a second mounting hole 11 .
  • the installation hole 12; the positive pole 2 passes through the first installation hole 11, and the positive pole 2 is electrically connected to the top cover 1; the negative pole 3 passes through the second installation hole 12, and the negative pole 3 is insulated from the top cover 1 .
  • the top cover 1 may have a first mounting hole 11 and a second mounting hole 12, or the lower insulating member 5 may have a first mounting hole 11 and a second mounting hole 12, and further, the top cover 1 and the lower insulating member 5.
  • the first mounting hole 11 and the second mounting hole 12 may be configured together.
  • the first installation hole 11 By passing the positive pole 2 through the first installation hole 11 , the first installation hole 11 can limit the position of the positive pole 2 , thereby improving the installation reliability of the positive pole 2 .
  • the second installation hole 12 By passing the negative pole 3 through the second installation hole 12 , the second installation hole 12 can limit the position of the negative pole 3 , thereby improving the installation reliability of the negative pole 3 .
  • the positive pole 2 is electrically connected to the top cover plate 1, and the negative pole column 3 is insulated from the top cover plate 1, which can ensure the occurrence of a short circuit.
  • the cover plate assembly 10 is provided with the first mounting hole 11 for the positive pole 2 to pass through, and the second mounting hole 12 is provided in the cover plate assembly 10 for the negative pole 3 to pass through.
  • the configuration can facilitate the positioning and limiting of the positive pole 2 and the negative pole 3, so as to ensure the reliability of the installation of the positive pole 2 and the negative pole 3, thereby improving the safety performance and service life of the power battery top cover assembly 100.
  • the positive pole 2 is electrically connected to the top cover plate 1, and the negative pole column 3 is insulated from the top cover plate 1, which can avoid the occurrence of a short circuit.
  • the positive pole 2 is welded with the top cover plate 1 . If the positive pole 2 and the top cover plate 1 are integrally formed, the thickness of the positive pole 2 thus arranged will be restricted by the thickness of the top cover 1. If the thickness of the positive pole 2 is small, the bottom of the positive pole 2 will be deformation, and there will be poor sealing. Therefore, by welding the positive pole 2 and the top cover plate 1, the thickness of the positive pole 2 can be easily increased, the bottom of the positive pole 2 can be prevented from being deformed, and the occurrence of poor sealing can be prevented.
  • the welding seam between the positive electrode column 2 and the top cover plate 1 surrounds the outer circumference of the positive electrode column 2 , so that the peripheral wall of the positive electrode column 2 or the circumferential direction of the top wall of the positive electrode column 2 can be welded and connected to the top cover plate 1 . , thereby ensuring the reliability of the welding of the top cover plate 1 and the positive pole 2 , and ensuring the structural reliability of the power battery top cover assembly 100 .
  • the power battery top cover assembly 100 may further include an upper insulating member 4 , the upper insulating member 4 covers the negative pole 3 , and the upper insulating member 4 is located between the negative pole 3 and the second mounting hole 12 to insulate the negative pole 3 and the top cover plate 1 .
  • the upper insulating member 4 can not only play an insulating role, but also facilitate the installation of the negative pole 3 on the cover plate assembly 10. The stability of the installation of the negative pole 3 is ensured, thereby ensuring the reliability of the insulation.
  • the negative pole 3 may include a base 31 and a cylinder 32 , the base 31 is located at one end of the cylinder 32 and is connected, and the base 31 is located at a part of the lower insulating member 5 away from the top cover 1 .
  • the cylinder 32 passes through the first mounting hole 11, and the power battery top cover assembly 100 further includes an insulating seal 6, the insulating seal 6 is sleeved on the cylinder 32, and the insulating seal 6 is located between the base 31 and the lower insulating member between 5.
  • the insulating sealing member 6 can play a sealing function, and the insulating sealing member 6 thus arranged has a good sealing effect.
  • the insulating sealing member 6 may be a rubber sealing ring.
  • the rubber material has the characteristics of high elasticity, and good insulation and sealing. Can effectively play a role in sealing.
  • the rubber sealing ring is an annular ring, thus, it can have a good sealing effect on the circumferential direction of the main body, so as to ensure the safe use of the power battery top cover assembly 100 and improve the service life.
  • the structure of the positive pole 2 is the same as that of the negative pole 3 , which can facilitate processing, improve assembly efficiency, and reduce costs.
  • the insulating sealing member 6 it can play a foolproof role, and it is convenient to distinguish the positive pole 2 and the negative pole 3 .
  • the positive pole 2 may be configured as a cylindrical shape.
  • the negative pole 3 may be configured in a cylindrical shape.
  • the positive pole 2 and the negative pole 3 can also be cylindrical and have the same structure, which is not limited here.
  • the top cover plate 1 is made of aluminum 3003 material
  • the positive electrode column 2 is made of aluminum 1060 material.
  • the aluminum material of the top cover plate 1 and the positive electrode column 2 can ensure the structural reliability while ensuring the top cover plate. 1 Reliability of electrical connection to positive pole 2.
  • the positive electrode terminal can be made of a material different from that of the top cover plate 1 , which reduces the resistance of the positive electrode column 2 and increases the power of the cell.
  • the power battery top cover assembly 100 further includes a first bus bar 71 and a second bus bar 72 , the first bus bar 71 is electrically connected to the top of the positive pole 2 , and the second bus bar 72 is electrically connected to the top of the positive pole 2 .
  • the top of the negative pole 3 is electrically connected.
  • the first bus bar 71 and the second By arranging the first bus bar 71 , the electrical connection of the positive pole 2 can be facilitated, the contact area with the positive pole 2 can be ensured, and the stability of the electrical connection can be improved.
  • the electrical connection of the negative pole 3 can be facilitated, the contact area with the negative pole 3 can be ensured, and the stability of the electrical connection can be improved.
  • the positive pole 2 and the first bus bar 71 are laser welded, so as to ensure the reliability of the installation of the two.
  • the power battery top cover assembly 100 may further include a first adapter piece 81 and a second adapter piece 82 , and the first adapter piece 81 is laser welded to the bottom of the positive pole 2 , The bottom of the second adapter piece 82 is laser welded to the bottom of the negative pole 3 . Therefore, the reliability of the connection between the first adapter piece 81 and the positive electrode column 2 and the reliability of the connection between the second adapter piece 82 and the negative electrode column 3 can be ensured.
  • the power battery top cover assembly 1 may further include a first adapter sheet 81 and a second adapter sheet 82 , and the positive pole 2 and the first adapter sheet 81 may be integrally formed. , which can improve the reliability of the connection between the two, reduce the assembly time, and improve the assembly efficiency.
  • the negative pole 3 and the first adapter piece 81 may be integrally formed, thereby improving the reliability of the connection between the two, reducing assembly time, and improving assembly efficiency.
  • the positive pole 2 and the first adapter piece 81 may be an integrally formed part, and at the same time, the negative pole column 3 and the second adapter piece 82 may also be an integrally formed piece, which is not limited herein.
  • the positive pole 2 may be welded to the first adapter plate 81 and the first bus bar 71 respectively.
  • the thickness of the positive pole 2 (for example, the dimension in the lamination direction of the lower insulating member 5 and the top cover plate 1 ) is greater than the sum of the penetration depths of the first transition piece 81 and the first bus bar 71 .
  • the thickness of the positive pole 2 thus set is relatively large, on the one hand, it can prevent the high temperature brought by welding from being unable to be exported, so as to ensure that the positive pole 2 will not be deformed; The positive pole 2 will not be deformed, which can improve the safety and reliability of the positive pole 2 .
  • the positive pole 2 has a first liquid injection hole 21 for liquid injection, and the first liquid injection hole 21 extends along the axis of the positive pole 2 to facilitate liquid injection and improve the Efficiency of liquid sealing.
  • the negative pole 3 has a second liquid injection hole 33 for liquid injection, and the second liquid injection hole 33 extends along the axial direction of the negative pole rod 3 to facilitate liquid injection and improve the efficiency of liquid injection and sealing.
  • the first bus bar 71 may have a first through hole 711 disposed opposite to the first liquid injection hole 21. During liquid injection, the medium may be injected into the first liquid injection hole 21 through the first through hole 711, so as to improve the efficiency of the liquid injection.
  • the second bus bar 72 may have a second through hole 721 opposite to the second liquid injection hole 33 , and the medium can be injected into the second liquid injection hole 33 through the second liquid injection hole 721 during liquid injection , in order to improve the convenience of injection.
  • liquid can be injected into the first liquid injection hole 21 first, and then the positive electrode column and the top cover plate 1 can be welded, or liquid can be injected into the second liquid injection hole 33 first, and then the negative electrode column 3 and the top cover plate 1 can be injected with liquid. welding.
  • the positive pole 2 may have a first liquid injection hole 21 for liquid injection, while the negative pole column 3 has a second liquid injection hole 33 for liquid injection, which is not limited herein.
  • the negative pole 3 can pass through the lower insulating member 5 and the top cover plate 1, the negative pole 3 is connected to the top cover through the upper insulating member 4, and the negative pole 3 is sleeved with a
  • the insulating sealing member 6 is used so that the negative pole 3 can maintain the insulating connection relationship with the top cover plate 1 .
  • the positive pole 2 can pass through the lower insulator 5 and the top cover plate 1, the positive pole 2 is connected to the top cover 1 by welding, and the positive pole 2 does not need to be provided with an insulating seal 6, which can achieve a good sealing effect, so that The connection between the top cover plate 1 and the positive pole can effectively overcome the large influence of the temperature on the plastic, and will not produce creep after long-term use, so as to ensure the safe use of the top cover plate 1 and prolong the service life.
  • the positive pole 2 may not be integrally formed with the top cover plate 1, but can be produced separately, so that the thickness of the positive pole column 2 is not restricted by the thickness of the top cover plate 1, and the risk of deformation and poor sealing of the bottom of the pole pole is solved.
  • the power battery according to the embodiment of the present disclosure includes the above-mentioned power battery top cover assembly 100 .
  • the power battery of the embodiment of the present disclosure by providing the first installation hole 11 in the cover plate assembly 10 for the positive pole 2 to pass through, and the second installation hole 12 in the cover plate assembly 10 for the negative pole 3 to pass through, it is convenient to Position and limit the positive pole 2 and the negative pole 3 to ensure the reliability of the installation of the positive pole 2 and the negative pole 3 .
  • the positive pole 2 is electrically connected to the top cover plate 1, and the negative pole column 3 is insulated from the top cover plate 1, which can avoid the occurrence of short circuit, and the reliability and stability of the power battery are good.

Abstract

一种动力电池顶盖组件(100)，包括盖板组件(10)、正极柱(2)以及负极柱(3)。盖板组件(10)包括顶盖板(1)和下绝缘件(5)，下绝缘件(5)与顶盖板(1)层叠设置，盖板组件(10)具有第一安装孔(11)和第二安装孔(12)；正极柱(2)穿设于第一安装孔(11)，且正极柱(2)与顶盖板(1)电连接，负极柱(3)穿设于第二安装孔(12)，且负极柱(3)与顶盖板(1)绝缘。

Description

动力电池顶盖组件以及动力电池 技术领域
本公开涉及动力电池技术领域，具体而言，涉及一种动力电池顶盖组件以及动力电池。
背景技术
在能源危机和环境污染问题的压力下，安全、环保、节能在当今社会发展中变得越来越重要。因此，动力电池因其节能、环保无污染的特点，应用越来越广泛，例如，动力电池可以用于电动车、电子设备等多个应用领域。
相关技术中，动力电池的顶盖组件的安装的稳固性、是否容易发生短路会直接影响动力电池的安全性能和使用寿命，因此，如何提高顶盖组件的安装的稳固性和避免短路成了亟待解决的问题。
公开内容
本公开旨在至少解决现有技术中存在的技术问题之一。
为此，本公开提出了一种动力电池顶盖组件，所述动力电池顶盖组件可以避免短路，安全性好，寿命长。
本公开还提出了一种动力电池，包括上述电池顶盖组件。
根据本公开实施例的动力电池顶盖组件，包括盖板组件、正极柱、负极柱。所述盖板组件包括顶盖板和下绝缘件，所述下绝缘件与所述顶盖板层叠设置，所述盖板组件具有第一安装孔和第二安装孔；所述正极柱穿设于所述第一安装孔，且所述正极柱与所述顶盖板电连接；所述负极柱穿设于所述第二安装孔，且所述负极柱与所述顶盖板绝缘。
根据本公开实施例的动力电池顶盖组件，通过在盖板组件设置第一安装孔以供正极柱穿设，在盖板组件设置第二安装孔以供负极柱穿设，可以便于对正极柱和负极柱的定位以及限位，以保证正极柱和负极柱的安装的可靠性，进而可以提高动力电池顶盖组件的安全性能以及使用寿命。同时，正极柱与顶盖板电连接，且负极柱与顶盖板绝缘，可以避免短路的情况发生。
在一些实施例中，所述正极柱与所述顶盖板焊接。
在一些实施例中，所述正极柱与所述顶盖板的焊缝环绕于所述正极柱的外周。
在一些实施例中，动力电池顶盖组件还包括上绝缘件，所述上绝缘件外套于所述负极柱，且所述上绝缘件位于所述负极柱和所述第二安装孔之间，以将所述负极柱和所述顶盖板绝缘。
在一些实施例中，所述负极柱包括基座和柱体，所述基座位于所述柱体的一端且相连，所述基座位于所述下绝缘件背离所述顶盖板的一侧，所述柱体穿设于所述第一安装孔，
所述动力电池顶盖组件还包括绝缘密封件，所述绝缘密封件套设于所述柱体，所述绝缘密封件位于所述基座和所述下绝缘件之间。
在一些实施例中，所述正极柱的构造与所述负极柱的构造相同。
在一些实施例中，所述绝缘密封件为橡胶密封圈。
在一些实施例中，所述顶盖板使用铝3003材料制作构成，所述正极柱使用铝1060材料制作构成。
在一些实施例中，动力电池顶盖组件还包括第一汇流排和第二汇流排，所述第一汇流排与所述正极柱的顶部电连接，所述第二汇流排与所述负极柱的顶部电连接。
在一些实施例中，所述正极柱与所述第一汇流排激光焊接。
在一些实施例中，动力电池顶盖组件还包括第一转接片和第二转接片，所述第一转接片与所述正极柱的底部激光焊接，所述第二转接片的底部与所述负极柱的底部激光焊接。
在一些实施例中，所述正极柱的厚度大于所述第一转接片与所述第一汇流排的熔深之和。
在一些实施例中，动力电池顶盖组件还包括第一转接片和第二转接片，所述正极柱和第一转接片为一体成型件；或者，所述负极柱和所述第二转接片为一体成型件。
在一些实施例中，所述正极柱被构造为圆柱形；或者，所述负极柱被构造为圆柱形。
在一些实施例中，所述正极柱具有用于注液的第一注液孔，所述第一注液孔沿所述正极柱的轴线方向延伸；或者，所述负极柱具有用于注液的第二注液孔，所述第二注液孔沿所述负极柱的轴线方向延伸。
根据本公开实施例的一个动力电池，包括如上所述的动力电池顶盖组件。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开实施例的动力电池顶盖组件的爆炸图。
附图标记：
动力电池顶盖组件100；
盖板组件10；顶盖板1；第一安装孔11；第二安装孔12；
正极柱2；第一注液孔21；负极柱3；基座31；柱体32；第二注液孔33；
上绝缘件4；下绝缘件5；绝缘密封件6；
第一汇流排71；第一通孔711；第二汇流排72；第二通孔721；
第一转接片81；第二转接片82。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类 似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。
在本公开的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，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公开的限制。
需要说明的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。进一步地，在本公开的描述中，除非另有说明，“多个”的含义是两个或两个以上。
下面参考图1描述根据本公开实施例的动力电池顶盖组件100，包括盖板组件10、正极柱2、负极柱3。
具体而言，如图1所示，盖板组件10包括顶盖板1和下绝缘件5，下绝缘件5与顶盖板1层叠设置，盖板组件10具有第一安装孔11和第二安装孔12；正极柱2穿设于第一安装孔11，且正极柱2与顶盖板1电连接；负极柱3穿设于第二安装孔12，且负极柱3与顶盖板1绝缘。例如，顶盖板1可以具有第一安装孔11和第二安装孔12，或者下绝缘件5可以具有第一安装孔11和第二安装孔12，再者，顶盖板1和下绝缘件5可以共同构造出第一安装孔11和第二安装孔12。
通过将正极柱2穿设于第一安装孔11，第一安装孔11可以起到对正极柱2限位的作用，进而可以提高正极柱2的安装的可靠性。通过将负极柱3穿设于第二安装孔12，第二安装孔12可以起到对负极柱3限位的作用，进而可以提高负极柱3的安装的可靠性。正极柱2与顶盖板1电连接，且负极柱3与顶盖板1绝缘，可以保证短路的情况发生。
根据本公开实施例的动力电池顶盖组件100，通过在盖板组件10设置第一安装孔11以供正极柱2穿设，在盖板组件10设置第二安装孔12以供负极柱3穿设，可以便于对正极柱2和负极柱3的定位以及限位，以保证正极柱2和负极柱3的安装的可靠性，进而可以提高动力电池顶盖组件100的安全性能以及使用寿命。同时，正极柱2与顶盖板1电连接，且负极柱3与顶盖板1绝缘，可以避免短路的情况发生。
在一些实施例中，正极柱2与顶盖板1焊接。若是正极柱2与顶盖板1为一体成型件，如此设置的正极柱2的厚度会受到顶盖板1的厚度的制约，若正极柱2的厚度较小，则会导致正极柱2的底部变形，且会有密封不良的情况发生。因此，通过将正极柱2和顶盖板1焊接连接，进而可以便于提高正极柱2的厚度，可以防止正极柱2的底部发生变形，以防止密封不良的情况发生。
进一步地，正极柱2与顶盖板1的焊缝环绕于正极柱2的外周，由此，正极柱2的周壁或 者正极柱2的顶壁的周向方向均可以与顶盖板1焊接连接，进而可以保证顶盖板1和正极柱2的焊接的可靠性，保证动力电池顶盖组件100的结构可靠性。
在一些实施例中，如图1所示，动力电池顶盖组件100还可以包括上绝缘件4，上绝缘件4外套于负极柱3，且上绝缘件4位于负极柱3和第二安装孔12之间，以将负极柱3和顶盖板1绝缘。通过设置上绝缘件4，可以实现负极柱3和顶盖板1绝缘设置，同时，上绝缘件4不仅可以起到绝缘的作用，同时，还可以便于将负极柱3安装于盖板组件10，保证负极柱3的安装的稳固性，进而可以保证绝缘的可靠性。
在一些实施例中，参照图1，负极柱3可以包括基座31和柱体32，基座31位于柱体32的一端且相连，基座31位于下绝缘件5背离顶盖板1的一侧，柱体32穿设于第一安装孔11，动力电池顶盖组件100还包括绝缘密封件6，绝缘密封件6套设于柱体32，绝缘密封件6位于基座31和下绝缘件5之间。绝缘密封件6可以起到密封的作用，且如此设置的绝缘密封件6密封效果好。
进一步地，绝缘密封件6可以为橡胶密封圈。橡胶材质具有高弹性的特点，且绝缘性以及密封性好。可以有效地起到密封作用。例如，橡胶密封圈为环形圈，由此，可以对主体的周向方向均可以起到良好的密封效果，以保证动力电池顶盖组件100的安全使用，利于提高使用寿命。
举例而言，正极柱2的构造与负极柱3的构造相同，进而可以便于加工，提高装配效率，降低成本。同时，通过设置绝缘密封件6可以起到防呆的作用，便于分辨正极柱2和负极柱3。
在一些实施例中，正极柱2可以被构造为圆柱形。或者，负极柱3可以被构造为圆柱形。当然，正极柱2和负极柱3也可以均为圆柱形，且构造相同，在此不做限定
在一些示例中，顶盖板1使用铝3003材料制作构成，正极柱2使用铝1060材料制作构成，铝材质的顶盖板1和正极柱2在保证结构可靠性的同时，可以保证顶盖板1与正极柱2的电连接的可靠性。正极极端子可以采用与顶盖板1不同的材料，降低了正极柱2的电阻，提高了电芯的功率。
在一些实施例中，参照图1，动力电池顶盖组件100还包括第一汇流排71和第二汇流排72，第一汇流排71与正极柱2的顶部电连接，第二汇流排72与负极柱3的顶部电连接。第一汇流排71和第二。通过设置第一汇流排71，可以便于正极柱2的电连接，保证与正极柱2的接触面积，提高电连接的稳定性。通过设置第二汇流排72，可以便于负极柱3的电连接，保证与负极柱3的接触面积，提高电连接的稳定性。,进一步地，正极柱2与第一汇流排71激光焊接，进而可以保证二者安装的可靠性。
在一些实施例中，如图1所示，动力电池顶盖组件100还可以包括第一转接片81和第二转接片82，第一转接片81与正极柱2的底部激光焊接，第二转接片82的底部与负极柱3的底部激光焊接。由此，可以保证第一转接片81与正极柱2的连接的可靠性，第二转接片82与负极柱3的连接的可靠性。
在一些实施例中，如图1所示，动力电池顶盖组件1还可以包括第一转接片81和第二转接片82，正极柱2和第一转接片81可以为一体成型件，进而可以提高二者连接的可靠性，降低装配时间，提高装配效率。或者，负极柱3和第一转接片81可以为一体成型件，进而可以提高二者连接的可靠性，降低装配时间，提高装配效率。当然，正极柱2和第一转接片81可以为一体成型件，同时，负极柱3也可以与第二转接片82为一体成型件，在此不做限定。
在一些示例中，正极柱2可以分别与第一转接片81和第一汇流排71焊接连接。正极柱2的厚度(例如，下绝缘件5和顶盖板1层叠方向的尺寸)大于第一转接片81与第一汇流排71的熔深之和。如此设置的正极柱2的厚度较大，一方面可以防止焊接时带来的高温无法导出，以保证正极柱2不会发生形变；另一方面，可以避免熔深发生重叠的情况发生，可以保证正极柱2不会发生形变，可以提高正极柱2的安全可靠性。
在一些实施例中，如图1所示，正极柱2具有用于注液的第一注液孔21，第一注液孔21沿正极柱2的轴线方向延伸，以便于注液，提高注液密封的效率。或者，负极柱3具有用于注液的第二注液孔33，第二注液孔33沿负极柱3的轴线方向延伸，以便于注液，提高注液密封的效率。例如，第一汇流排71可以有与第一注液孔21相对设置的第一通孔711，注液时可以通过第一通孔711将介质注入到第一注液孔21中，以利于提高注液的便捷性，第二汇流排72可以有与第二注液孔33相对设置的第二通孔721，注液时可以通过第二通孔721将介质注入到第二注液孔33中，以利于提高注液的便捷性。加工时，可以先向第一注液孔21注液，再将正极极柱和顶盖板1焊接，或者可以先向第二注液孔33注液，再将负极柱3和顶盖板1焊接。当然，正极柱2可以具有用于注液的第一注液孔21，同时，负极柱3具有用于注液的第二注液孔33，在此不做限定。
下面具体描述本公开的一个实施例的工作原理：负极柱3可以穿过下绝缘件5和顶盖板1，负极柱3通过上绝缘件4与顶盖连接，在负极柱3上套设有绝缘密封件6，以使负极柱3可以保持与顶盖板1的绝缘连接关系。正极柱2可以穿过下绝缘件5和顶盖板1，正极柱2通过焊接的方式与顶盖板1连接，并且正极柱2无需再设置绝缘密封件6，可达到良好的密封效果，使得顶盖板1的与正极极柱连接处能够有效克服塑胶受温度的较大影响，长期使用后不会产生蠕变，保证顶盖板1的安全使用，延长使用寿命。并且正极柱2可以不与顶盖板1一体成型，单独制作，使得正极柱2的厚度不受顶盖板1厚度的制约，解决极柱底部变形和密封不良的风险。
根据本公开实施例的动力电池，包括上述动力电池顶盖组件100。根据本公开实施例的动力电池，通过在盖板组件10设置第一安装孔11以供正极柱2穿设，在盖板组件10设置第二安装孔12以供负极柱3穿设，可以便于对正极柱2和负极柱3的定位以及限位，以保证正极柱2和负极柱3的安装的可靠性。同时，正极柱2与顶盖板1电连接，且负极柱3与顶盖板1绝缘，可以避免短路的情况发生，动力电池的可靠性和稳定性好。
根据本公开实施例的动力电池的其他构成等以及操作对于本领域普通技术人员而言都是 已知的，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (16)

  1. 一种动力电池顶盖组件，其特征在于，包括：
    盖板组件，所述盖板组件包括顶盖板和下绝缘件，所述下绝缘件与所述顶盖板层叠设置，所述盖板组件具有第一安装孔和第二安装孔；
    正极柱，所述正极柱穿设于所述第一安装孔，且所述正极柱与所述顶盖板电连接；
    负极柱，所述负极柱穿设于所述第二安装孔，且所述负极柱与所述顶盖板绝缘。
  2. 根据权利要求1所述的动力电池顶盖组件，其特征在于，所述正极柱与所述顶盖板焊接。
  3. 根据权利要求2所述的动力电池顶盖组件，其特征在于，所述正极柱与所述顶盖板的焊缝环绕于所述正极柱的外周。
  4. 根据权利要求1所述的动力电池顶盖组件，其特征在于，还包括上绝缘件，所述上绝缘件外套于所述负极柱，且所述上绝缘件位于所述负极柱和所述第二安装孔之间，以将所述负极柱和所述顶盖板绝缘。
  5. 根据权利要求1所述的动力电池顶盖组件，其特征在于，所述负极柱包括基座和柱体，所述基座位于所述柱体的一端且相连，所述基座位于所述下绝缘件背离所述顶盖板的一侧，所述柱体穿设于所述第一安装孔，
    所述动力电池顶盖组件还包括绝缘密封件，所述绝缘密封件套设于所述柱体，所述绝缘密封件位于所述基座和所述下绝缘件之间。
  6. 根据权利要求5所述的动力电池顶盖组件，其特征在于，所述正极柱的构造与所述负极柱的构造相同。
  7. 根据权利要求5所述的动力电池顶盖组件，其特征在于，所述绝缘密封件为橡胶密封圈。
  8. 根据权利要求1所述的动力电池顶盖组件，其特征在于，所述顶盖板使用铝3003材料制作构成，所述正极柱使用铝1060材料制作构成。
  9. 根据权利要求1所述的动力电池顶盖组件，其特征在于，还包括第一汇流排和第二汇流排，所述第一汇流排与所述正极柱的顶部电连接，所述第二汇流排与所述负极柱的顶部电连接。
  10. 根据权利要求9所述的动力电池顶盖组件，其特征在于，所述正极柱与所述第一汇流排激光焊接。
  11. 根据权利要求9所述的动力电池顶盖组件，其特征在于，还包括第一转接片和第二转接片，所述第一转接片与所述正极柱的底部激光焊接，所述第二转接片的底部与所述负极柱的底部激光焊接。
  12. 根据权利要求11所述的动力电池顶盖组件，其特征在于，所述正极柱的厚度大于所述第一转接片与所述第一汇流排的熔深之和。
  13. 根据权利要求1所述的动力电池顶盖组件，其特征在于，还包括第一转接片和第二转接片，所述正极柱和第一转接片为一体成型件；或者，所述负极柱和所述第二转接片为一体成型件。
  14. 根据权利要求1所述的动力电池顶盖组件，其特征在于，所述正极柱被构造为圆柱形；或者，所述负极柱被构造为圆柱形。
  15. 根据权利要求1所述的动力电池顶盖组件，其特征在于，所述正极柱具有用于注液的第一注液孔，所述第一注液孔沿所述正极柱的轴线方向延伸；或者，所述负极柱具有用于注液的第二注液孔，所述第二注液孔沿所述负极柱的轴线方向延伸。
  16. 一种动力电池，其特征在于，包括根据权利要求1-15中任一项所述的动力电池顶盖组件。
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CN103682238A (zh) * 2012-09-14 2014-03-26 江苏海孚新能源科技有限公司 一种锂离子电池的注液孔结构及注液方法
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CN207183330U (zh) * 2017-07-28 2018-04-03 深圳市欣迪盟新能源科技股份有限公司 电池盖板结构
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CN115275463B (zh) * 2022-08-11 2023-08-04 孚能科技(赣州)股份有限公司 电池单元顶盖、电池单元、电池模组及电池包
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