WO2023236941A1 - Battery top cover, battery cell, and power battery - Google Patents

Battery top cover, battery cell, and power battery Download PDF

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Publication number
WO2023236941A1
WO2023236941A1 PCT/CN2023/098554 CN2023098554W WO2023236941A1 WO 2023236941 A1 WO2023236941 A1 WO 2023236941A1 CN 2023098554 W CN2023098554 W CN 2023098554W WO 2023236941 A1 WO2023236941 A1 WO 2023236941A1
Authority
WO
WIPO (PCT)
Prior art keywords
top cover
pole
battery
insulating member
pole hole
Prior art date
Application number
PCT/CN2023/098554
Other languages
French (fr)
Chinese (zh)
Inventor
于贺
Original Assignee
北京车和家汽车科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京车和家汽车科技有限公司 filed Critical 北京车和家汽车科技有限公司
Publication of WO2023236941A1 publication Critical patent/WO2023236941A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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 lithium-ion batteries, and in particular to a battery top cover, battery cells and power batteries.
  • the present disclosure aims to solve one of the technical problems in the related art, at least to a certain extent.
  • the battery top cover includes a top cover piece, a fixing piece and a pole.
  • the top cover piece is provided with a pair of first pole holes arranged at intervals
  • the fixing piece includes a body and a pole provided on A protruding portion on the body, the body is located on one side of the top cover sheet in the thickness direction, the protruding portion fits in the first pole hole, and the body is away from the protruding portion.
  • the side of the part is used to form a bus connection area
  • at least part of the pole is located on the other side in the thickness direction of the top cover sheet, and the pole is connected to the fixing piece, and the pole is To connect the core.
  • the protruding portion of the fixing member of the battery top cover fits in the first pole hole to fix the pole, thereby reducing the height of the pole protruding from the top cover sheet, which has the advantage of low overall height of the pole.
  • the protruding portion is provided with a second pole hole, and a cross-sectional area of one end of the second pole hole adjacent to the pole is smaller than the cross-sectional area of the rest of the second pole hole.
  • Cross-sectional area the pole has a fitting part, the fitting part is fitted in the second pole hole, and the cross-sectional area of the free end of the fitting part is greater than the cross-sectional area of the remaining positions of the fitting part.
  • the second pole hole includes a first section and a second section connected in sequence from bottom to top, and the cross-sectional area of the first section is smaller than the cross-sectional area of the second section
  • the fitting part includes a first fitting part and a second fitting part connected in sequence from bottom to top, and the cross-sectional area of the first fitting part is smaller than the cross-sectional area of the second fitting part.
  • the end surface of the free end of the fitting part and the body are on one side in the thickness direction of the top cover sheet.
  • the end faces are coplanar.
  • the battery top cover further includes a second insulating member, at least partially located between the top cover sheet and the pole.
  • a surface of the second insulating member away from the top cover sheet is provided with a second positioning groove surrounding the fourth pole hole, and the closing portion fits in the second positioning groove.
  • the power battery includes the battery core.
  • FIG. 1 is an exploded schematic diagram of a battery top cover according to an embodiment of the present disclosure.
  • FIG 2 is a front view of a battery top cover according to an embodiment of the present disclosure.
  • FIG 3 is a cross-sectional view of a battery top cover according to an embodiment of the present disclosure.
  • FIG. 4 is a partially enlarged schematic diagram of a cross-sectional view of a battery top cover according to an embodiment of the present disclosure.
  • Figure 5 is an isometric view of a battery top cover according to an embodiment of the present disclosure.
  • the battery top cover includes a top cover sheet 1, a fixing part 2, a pole 3, a first insulating part 4 and a second insulating part 5.
  • the top cover The plate 1 is provided with a pair of first pole holes 11, and the fixing member 2 includes The body 21 and the protruding portion 22 provided on the body 21 are located on one side of the top cover sheet 1 in the thickness direction.
  • the protruding portion 22 fits in the first pole hole 11 and at least part of the pole 3 is located The other side of the top cover sheet 1 in the thickness direction, and the pole 3 is connected to the fixing part 2, and the pole 3 is used to connect the winding core.
  • FIG. 1 shows an explosion in the up and down direction.
  • Figure 3 is a cross-sectional view along direction A in Figure 2 .
  • the protruding portion of the fixing member of the battery top cover fits in the first pole hole to fix the pole, thereby reducing the height of the pole protruding from the top cover sheet, which has the advantage of low overall height of the pole.
  • One of the two ends of the second pole hole 221 is adjacent to the top.
  • the body on one side of the cover sheet 1 in the thickness direction, the second end of the two ends of the second pole hole 221 is adjacent to the pole 3 on the other side of the cover sheet 1 in the thickness direction, and the other two ends of the second pole hole 221
  • the cross-sectional area of the second pole hole 221 is the cross-sectional area of the second pole hole 221 on the side away from the second end of the second pole hole 221.
  • the cross-sectional area of the second pole hole 221 increases with the distance from the pole in the axial direction. The distance between column 3 becomes larger.
  • the axial direction of the fitting portion 31 is the same as the thickness direction of the top cover sheet 1 .
  • One end of the fitting portion 31 adjacent to the thickness direction of the top cover sheet 1 is the free end of the fitting portion 31 .
  • the free end is used to enter the fitting portion 31 .
  • the cross-sectional area of one end of the second pole hole 221 and the rest of the fitting portion 31 is the cross-sectional area of the fitting portion 31 on the side away from the free end of the fitting portion 31 .
  • the cross-sectional area of the free end is greater than the cross-sectional area of the end of the second pole hole 221 adjacent to the pole. cross-sectional area, so the free end of the fitting portion 31 cannot escape from the second pole hole 221 of the protruding portion 22 .
  • the matching part 31 and the second pole hole 221 cooperate to achieve the fixation of the fixing part 2 and the pole 3.
  • the connection between the fixing part 2 and the pole 3 increases the cross-sectional area of the current passing through the pole 3 and enhances the overcurrent of the battery top cover. ability.
  • the second pole hole 221 includes a first section and a second section connected in sequence from bottom to top, and the cross-sectional area of the first section is smaller than that of the second section.
  • the cross-sectional area of the two sections, the fitting part 31 includes a first fitting part and a second fitting part connected in sequence from bottom to top, and the cross-sectional area of the first fitting part is smaller than the cross-sectional area of the second fitting part. cross-sectional area.
  • the first section of the second pole hole 221 is used to restrict the second fitting part from disengaging from the protruding part 22.
  • the cross-sectional area of the second fitting part is larger than the cross-sectional area of the first section.
  • the first fitting part The cross-sectional area is consistent with or slightly larger than the cross-sectional area of the first section to achieve clearance fit or interference fit.
  • the cross-sectional area of the second fitting part is consistent with or slightly larger than the cross-sectional area of the second section to achieve clearance fit or interference fit.
  • the end surface of the free end of the fitting portion 31 is coplanar with the end surface of the body on one side in the thickness direction of the top cover sheet 1 .
  • one end of the pole 3 entering the fixing member 2 through the second pole hole 221 is coplanar with the end surface of the body on one side in the thickness direction of the top cover sheet 1.
  • the fixing member 2 and the pole 3 are in the thickness direction of the top cover sheet 1.
  • the overall height is small.
  • the coplanarity of the fixing piece 2 and the pole 3 increases the cross-sectional area of the pole 3 through which current flows, thereby enhancing the overcurrent capability of the battery top cover.
  • the projection of the bus connection area is located at the projection of the first pole hole 11 Inside.
  • the shape of the bus connection area is an annular area
  • the outer edge of the annular area is a circle equal to the inner diameter of the first pole hole 11
  • the inner edge of the annular area is consistent with the cross-sectional shape of the pole 3
  • the pole 3 can be a rectangular column, a circular column, an elliptical column, etc., so the inner edge of the annular area is in a rectangular, circular, or elliptical shape.
  • the battery top cover further includes a first insulating member 4, which is disposed between the fixing member 2 and the top cover sheet 1. 4 is provided with a third pole hole 41 for the protruding portion 22 to pass through.
  • the surface of the first insulating member 4 away from the top cover piece 1 is provided with a limiting groove 42 surrounding the third pole hole 41.
  • the body 21 is fitted in the limiting groove 42.
  • the surface of the first insulating member 4 away from the fixing member 2 has a limiting ring 43 surrounding the third pole hole 41. At least part of the limiting ring 43 is located in the first pole hole 11 to separate the top cover.
  • Piece 1 and protrusion 22 is located in the first pole hole 11 to separate the top cover.
  • the first insulating member 4 is disposed between the fixing member 2 and the top cover sheet 1 to separate the fixing member 2 and the top cover sheet 1 and play an insulating role.
  • the limiting groove of the first insulating member 4 The shape and size of 42 match the body 21 of the fixing member 2. When the body 21 of the fixing member 2 is in the shape of a disc, the body 21 fits in the limiting groove 42.
  • the height of the body 21 in the thickness direction of the top cover sheet 1 is equal to the height of the first body 21 of the fixing member 2.
  • the height of the groove wall of the limiting groove 42 of an insulating member 4 is consistent, the inner diameter of the limiting ring 43 matches the protruding portion 22 of the fixing member 2, and the outer diameter of the limiting ring 43 matches the inner diameter of the first pole hole 11. Accordingly, when the main body 21 is in the shape of a disc, the limiting ring 43 is at least partially located in the first pole hole 11 and separates the top cover piece 1 and the protruding portion 22 to facilitate sealing and insulation.
  • the battery top cover further includes a second insulating member 5 , at least part of the second insulating member 5 is located between the top cover sheet 1 and the pole 3 .
  • the side of the cover 1 adjacent to the pole 3 is provided with a first positioning groove 12 surrounding the first pole hole 11.
  • the side of the second insulating member 5 away from the pole 3 is correspondingly provided with a protruding portion 51.
  • the protruding portion 51 is The first positioning groove 12 fits.
  • the projection of the second insulating member 5 in the projection plane orthogonal to the thickness direction of the top cover sheet 1, the projection of the second insulating member 5 is located within the projection of the top cover sheet 1 , the second insulator 5 is provided with a fourth pole for the pole 3 to pass through.
  • Post hole 52, the pole post 3 has a closing portion 32, the closing portion 32 closes the fourth pole hole 52, in the projection plane orthogonal to the thickness direction of the top cover sheet 1, the projection of the fourth pole hole 52 is located in the closed within the projection of part 32.
  • the surface of the second insulating member 5 away from the top cover sheet 1 is provided with a second positioning groove 53 surrounding the fourth pole hole 52 , and the closing portion 32 fits in the second positioning groove 53 . inside the positioning groove 53.
  • the height of the groove wall of the second positioning groove 53 matches the height of the closing portion 32 in the thickness direction of the top cover sheet 1 , and the closing portion 32 entering the second positioning groove 53 can lower the battery top cover.
  • the overall height of the sheet 1 in the thickness direction, preferably, the side of the closing portion 32 away from the fixing member 2 is coplanar with the surface of the second insulating member 5 away from the top cover sheet 1 .
  • the first insulating member 4 can be made of silicone sheet or other materials, and any related material with a thermal conductivity greater than 0.24W (m*K) can be selected according to actual conditions.
  • the thermally conductive material can enhance heat dissipation, minimize the overcurrent temperature rise of the battery top cover, and ensure the safety performance of the battery core.
  • the protruding portion of the fixing member of the battery top cover provided by the present disclosure fits into the first pole hole to fix the pole, thereby reducing the height of the pole protruding from the top cover sheet, which has the advantage of low overall height of the pole.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

Disclosed is a battery top cover. The battery top cover comprises a top cover sheet, fixing members, and post terminals; a pair of first post terminal holes spaced apart from each other are formed in the top cover sheet; each fixing member comprises a body and a protrusion arranged on the body; the bodies are located on one side of the top cover sheet in the thickness direction; the protrusions are fitted into the first post terminal holes; the side surface of each body away from the corresponding protrusion is used for forming a bus bar connecting area; at least parts of the post terminals are located on the other side of the top cover sheet in the thickness direction; and the post terminals are connected to the fixing members, and the post terminals are configured to be connected to a roll.

Description

一种电池顶盖、电芯及动力电池A battery top cover, battery core and power battery
相关申请的交叉引用Cross-references to related applications
本申请基于申请号为202221397134.8、申请日为2022年06月06日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。This application is filed based on a Chinese patent application with application number 202221397134.8 and a filing date of June 6, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application as a reference.
技术领域Technical field
本公开涉及锂离子电池技术领域，尤其涉及一种电池顶盖、电芯及动力电池。The present disclosure relates to the technical field of lithium-ion batteries, and in particular to a battery top cover, battery cells and power batteries.
背景技术Background technique
相关技术中，锂离子电池顶盖极柱部分主要采用铆接柱+铆接块形式，该方案受限于设计及工艺因素，铆接柱的尺寸有限，影响电芯的过流能力，造成大电流情况下电芯温升较高，影响电芯安全，而且受焊接汇流排的影响铆接块的厚度一般最小要3mm，造成电芯极柱整体高度受铆接块限制电芯极柱的高度大于铆接块的高度，影响电芯能量密度，极柱受到铆接工艺的影响，极柱的直径一般都小于10mm，极柱很难满足高倍率充放电的电芯的要求，导致电芯在充放电过程中出现温升高，绝缘密封失效等情况，严重时可引起起火***。In related technologies, the top cover pole part of lithium-ion batteries mainly adopts the form of riveted posts + riveted blocks. This solution is limited by design and process factors. The size of the riveted posts is limited, which affects the overcurrent capacity of the battery core, resulting in large current conditions. The temperature rise of the battery core is high, which affects the safety of the battery core. Moreover, due to the influence of the welding busbar, the thickness of the riveting block is generally at least 3mm, causing the overall height of the battery pole to be limited by the riveting block. The height of the battery pole is greater than the height of the riveting block. , affecting the energy density of the battery core. The pole is affected by the riveting process. The diameter of the pole is generally less than 10mm. It is difficult for the pole to meet the requirements of high-rate charge and discharge batteries, resulting in a temperature rise in the battery core during the charge and discharge process. High, insulation seal failure and other conditions may cause fire and explosion in severe cases.
发明内容Contents of the invention
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。The present disclosure aims to solve one of the technical problems in the related art, at least to a certain extent.
为此，本公开的实施例提出了一种电池顶盖，该电池顶盖的固定件的凸出部配合在第一极柱孔固定极柱内降低了极柱凸出于顶盖片的高度具有极柱整体高度低的优点。To this end, embodiments of the present disclosure provide a battery top cover. The protruding portion of the fixing member of the battery top cover fits into the first pole hole to fix the pole, thereby reducing the height of the pole protruding from the top cover sheet. It has the advantage of low overall height of the pole.
根据本公开实施例的电池顶盖，电池顶盖包括顶盖片、固定件和极柱，所述顶盖片上设有一对间隔布置的第一极柱孔，所述固定件包括本体和设在所述本体上的凸出部，所述本***于所述顶盖片的厚度方向上的一侧，所述凸出部配合在所述第一极柱孔内，所述本体远离所述凸出部的侧面用于形成汇流排连接区域，所述极柱的至少部分位于所述顶盖片的厚度方向上的另一侧，且所述极柱与所述固定件相连，所述极柱用于连接卷芯。According to the battery top cover according to the embodiment of the present disclosure, the battery top cover includes a top cover piece, a fixing piece and a pole. The top cover piece is provided with a pair of first pole holes arranged at intervals, and the fixing piece includes a body and a pole provided on A protruding portion on the body, the body is located on one side of the top cover sheet in the thickness direction, the protruding portion fits in the first pole hole, and the body is away from the protruding portion. The side of the part is used to form a bus connection area, at least part of the pole is located on the other side in the thickness direction of the top cover sheet, and the pole is connected to the fixing piece, and the pole is To connect the core.
根据本公开实施例的电池顶盖的固定件的凸出部配合在第一极柱孔固定极柱内降低了极柱凸出于顶盖片的高度具有极柱整体高度低的优点。According to the embodiment of the present disclosure, the protruding portion of the fixing member of the battery top cover fits in the first pole hole to fix the pole, thereby reducing the height of the pole protruding from the top cover sheet, which has the advantage of low overall height of the pole.
在一些实施例中，所述凸出部设有第二极柱孔，所述第二极柱孔的邻近所述极柱的一端的横截面积小于所述第二极柱孔其余位置的横截面积，所述极柱具有配合部，所述配合部配合在所述第二极柱孔内，所述配合部的自由端的横截面积大于所述配合部其余位置的横截面积。In some embodiments, the protruding portion is provided with a second pole hole, and a cross-sectional area of one end of the second pole hole adjacent to the pole is smaller than the cross-sectional area of the rest of the second pole hole. Cross-sectional area, the pole has a fitting part, the fitting part is fitted in the second pole hole, and the cross-sectional area of the free end of the fitting part is greater than the cross-sectional area of the remaining positions of the fitting part.
在一些实施例中，所述第二极柱孔包括从下至上的方向依次连接的第一段和第二段，所述第一段的横截面积小于所述第二段的横截面积，所述配合部包括从下至上的方向依次连接的第一配合部和第二配合部，所述第一配合部的横截面积小于所述第二配合部的横截面积。In some embodiments, the second pole hole includes a first section and a second section connected in sequence from bottom to top, and the cross-sectional area of the first section is smaller than the cross-sectional area of the second section, The fitting part includes a first fitting part and a second fitting part connected in sequence from bottom to top, and the cross-sectional area of the first fitting part is smaller than the cross-sectional area of the second fitting part.
在一些实施例中，所述配合部的自由端的端面与所述本体在所述顶盖片的厚度方向一侧 的端面共面。In some embodiments, the end surface of the free end of the fitting part and the body are on one side in the thickness direction of the top cover sheet. The end faces are coplanar.
在一些实施例中，电池顶盖还包括第一绝缘件，所述第一绝缘件设在所述固定件和所述顶盖片之间，所述第一绝缘件设有供所述凸出部穿过的第三极柱孔，所述第一绝缘件远离所述顶盖片的表面设有环绕所述第三极柱孔的限位槽，所述本体配合在所述限位槽内，所述第一绝缘件远离所述固定件的表面具有环绕所述第三极柱孔的限位环，所述限位环的至少部分位于第一极柱孔内。In some embodiments, the battery top cover further includes a first insulating member provided between the fixing member and the top cover sheet, the first insulating member is provided with a hole for the protruding The third pole hole passes through, the surface of the first insulating member away from the top cover piece is provided with a limiting groove surrounding the third pole hole, and the body fits in the limiting groove. The surface of the first insulating member away from the fixing member has a limiting ring surrounding the third pole hole, and at least part of the limiting ring is located in the first pole hole.
在一些实施例中，电池顶盖还包括第二绝缘件，所述第二绝缘件的至少部分位于所述顶盖片和所述极柱之间。In some embodiments, the battery top cover further includes a second insulating member, at least partially located between the top cover sheet and the pole.
在一些实施例中，所述顶盖片的邻近所述极柱的一面设有环绕所述第一极柱孔的第一定位槽，所述第二绝缘件的远离所述极柱的一面对应地设置有突出部，所述突出部与所述第一定位槽配合。In some embodiments, a side of the top cover sheet adjacent to the pole is provided with a first positioning groove surrounding the first pole hole, and a side of the second insulating member away from the pole corresponds to A protruding portion is provided on the ground, and the protruding portion cooperates with the first positioning groove.
在一些实施例中，在正交于所述顶盖片的厚度方向上的投影面内，所述第二绝缘件的投影位于所述顶盖片的投影内，所述第二绝缘件设有供所述极柱穿过的第四极柱孔，所述极柱具有封闭部，所述封闭部封闭所述第四极柱孔，在正交于所述顶盖片的厚度方向上的投影面内，所述第四极柱孔的投影位于所述封闭部的投影内。In some embodiments, in a projection plane orthogonal to the thickness direction of the top cover sheet, the projection of the second insulating member is located within the projection of the top cover sheet, and the second insulating member is provided with The fourth pole hole for the pole to pass through, the pole has a closing part, the closing part closes the fourth pole hole, in the projection orthogonal to the thickness direction of the top cover sheet In the plane, the projection of the fourth pole hole is located within the projection of the closed part.
在一些实施例中，所述第二绝缘件远离所述顶盖片的表面设有环绕所述第四极柱孔的第二定位槽，所述封闭部配合在所述第二定位槽内。In some embodiments, a surface of the second insulating member away from the top cover sheet is provided with a second positioning groove surrounding the fourth pole hole, and the closing portion fits in the second positioning groove.
根据本公开实施例的电芯，电池电芯包括电池顶盖。According to a battery cell according to an embodiment of the present disclosure, the battery cell includes a battery top cover.
根据本公开实施例的动力电池，动力电池包括所述电芯。According to the power battery according to the embodiment of the present disclosure, the power battery includes the battery core.
附图说明Description of the drawings
图1是根据本公开实施例中电池顶盖的***示意图。FIG. 1 is an exploded schematic diagram of a battery top cover according to an embodiment of the present disclosure.
图2是根据本公开实施例中电池顶盖的正视图。2 is a front view of a battery top cover according to an embodiment of the present disclosure.
图3是根据本公开实施例中电池顶盖的剖视图。3 is a cross-sectional view of a battery top cover according to an embodiment of the present disclosure.
图4是根据本公开实施例中电池顶盖的剖视图的局部放大示意图。4 is a partially enlarged schematic diagram of a cross-sectional view of a battery top cover according to an embodiment of the present disclosure.
图5是根据本公开实施例中电池顶盖的等轴测示意图。Figure 5 is an isometric view of a battery top cover according to an embodiment of the present disclosure.
附图标记：1、顶盖片；11、第一极柱孔；12、第一定位槽；2、固定件；21、本体；22、凸出部；221、第二极柱孔；3、极柱；31、配合部；32、封闭部；4、第一绝缘件；41、第三极柱孔；42、限位槽；43、限位环；5、第二绝缘件；51、突出部；52、第四极柱孔；53、第二定位槽。Reference signs: 1. Top cover piece; 11. First pole hole; 12. First positioning slot; 2. Fixing piece; 21. Body; 22. Projection; 221. Second pole hole; 3. Pole; 31. Fitting part; 32. Closing part; 4. First insulating piece; 41. Third pole hole; 42. Limiting slot; 43. Limiting ring; 5. Second insulating piece; 51. Protrusion part; 52. The fourth pole hole; 53. The second positioning slot.
具体实施方式Detailed ways
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。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。The embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present disclosure and are not to be construed as limitations of the present disclosure.
根据本公开实施例的电池顶盖，如图1至图5所示，电池顶盖包括顶盖片1、固定件2、极柱3、第一绝缘件4和第二绝缘件5，顶盖片1上设有一对第一极柱孔11，固定件2包括 本体21和设在本体21上的凸出部22，本体21位于顶盖片1的厚度方向上的一侧，凸出部22配合在第一极柱孔11内，极柱3的至少部分位于顶盖片1的厚度方向上的另一侧，且极柱3与固定件2相连，极柱3用于连接卷芯。极柱3与固定件2配合，固定件2的凸出部22配合在第一极柱孔11内降低了固定件2的凸出于顶盖片1的高度，降低了电池顶盖结构的重量，能够提升电芯的能量密度。图1为沿上下方向***的图。图3为沿图2中A方向的剖面图。在一些实施例中，第一极柱孔11可以间隔布置在顶盖片1上，本体21远离凸出部22的侧面用于形成汇流排连接区域，第一绝缘件4设在固定件2和顶盖片1之间以隔开固定件2和顶盖片1，第二绝缘件5的至少部分位于顶盖片1和极柱3之间以隔开顶盖片1和极柱3According to the battery top cover according to the embodiment of the present disclosure, as shown in Figures 1 to 5, the battery top cover includes a top cover sheet 1, a fixing part 2, a pole 3, a first insulating part 4 and a second insulating part 5. The top cover The plate 1 is provided with a pair of first pole holes 11, and the fixing member 2 includes The body 21 and the protruding portion 22 provided on the body 21 are located on one side of the top cover sheet 1 in the thickness direction. The protruding portion 22 fits in the first pole hole 11 and at least part of the pole 3 is located The other side of the top cover sheet 1 in the thickness direction, and the pole 3 is connected to the fixing part 2, and the pole 3 is used to connect the winding core. The pole 3 cooperates with the fixing part 2, and the protruding part 22 of the fixing part 2 fits in the first pole hole 11, which reduces the height of the fixing part 2 protruding from the top cover sheet 1 and reduces the weight of the battery top cover structure. , which can increase the energy density of the battery core. Figure 1 shows an explosion in the up and down direction. Figure 3 is a cross-sectional view along direction A in Figure 2 . In some embodiments, the first pole holes 11 can be arranged at intervals on the top cover sheet 1 , the side of the body 21 away from the protruding portion 22 is used to form a bus connection area, and the first insulating member 4 is provided on the fixing member 2 and The top cover sheet 1 is spaced between the fixing member 2 and the top cover sheet 1, and at least part of the second insulating member 5 is located between the top cover sheet 1 and the pole 3 to separate the top cover sheet 1 and the pole 3.
根据本公开实施例的电池顶盖的固定件的凸出部配合在第一极柱孔固定极柱内降低了极柱凸出于顶盖片的高度，具有极柱整体高度低的优点。According to the embodiment of the present disclosure, the protruding portion of the fixing member of the battery top cover fits in the first pole hole to fix the pole, thereby reducing the height of the pole protruding from the top cover sheet, which has the advantage of low overall height of the pole.
在一些实施例中，如图1至图5所示，凸出部22设有第二极柱孔221，第二极柱孔221的邻近极柱3的一端的横截面积小于第二极柱孔221其余位置的横截面积，极柱3具有配合部31，配合部31配合在第二极柱孔221内，配合部31的自由端的横截面积大于配合部31其余位置的横截面积。第二极柱孔221的轴向方向与顶盖片1的厚度方向相同，顶盖片1的厚度方向与图1中的上下方向相同，第二极柱孔221的两端中的一端邻近顶盖片1的厚度方向的一侧的本体，第二极柱孔221的两端中的第二端邻近顶盖片1的厚度方向的另一侧的极柱3，第二极柱孔221其余位置的横截面积即远离第二极柱孔221的第二端的一侧的第二极柱孔221的横截面积，第二极柱孔221的横截面积在轴向方向上随着距离极柱3的距离的增加而变大。In some embodiments, as shown in FIGS. 1 to 5 , the protruding portion 22 is provided with a second pole hole 221 , and the cross-sectional area of one end of the second pole hole 221 adjacent to the pole 3 is smaller than that of the second pole. The cross-sectional area of the rest of the hole 221 is the pole post 3 having a fitting part 31 , the fitting part 31 fits in the second pole hole 221 , and the cross-sectional area of the free end of the fitting part 31 is greater than the cross-sectional area of the rest of the fitting part 31 . The axial direction of the second pole hole 221 is the same as the thickness direction of the top cover piece 1 , and the thickness direction of the top cover piece 1 is the same as the up-down direction in FIG. 1 . One of the two ends of the second pole hole 221 is adjacent to the top. The body on one side of the cover sheet 1 in the thickness direction, the second end of the two ends of the second pole hole 221 is adjacent to the pole 3 on the other side of the cover sheet 1 in the thickness direction, and the other two ends of the second pole hole 221 The cross-sectional area of the second pole hole 221 is the cross-sectional area of the second pole hole 221 on the side away from the second end of the second pole hole 221. The cross-sectional area of the second pole hole 221 increases with the distance from the pole in the axial direction. The distance between column 3 becomes larger.
配合部31的轴向方向与顶盖片1的厚度方向相同，配合部31邻近顶盖片1的厚度方向的一侧的一端为配合部31的自由端，自由端是配合部31用来进入第二极柱孔221的一端，配合部31的其余位置的横截面积即是远离配合部31的自由端的一侧的配合部31的横截面积。The axial direction of the fitting portion 31 is the same as the thickness direction of the top cover sheet 1 . One end of the fitting portion 31 adjacent to the thickness direction of the top cover sheet 1 is the free end of the fitting portion 31 . The free end is used to enter the fitting portion 31 . The cross-sectional area of one end of the second pole hole 221 and the rest of the fitting portion 31 is the cross-sectional area of the fitting portion 31 on the side away from the free end of the fitting portion 31 .
在一些实施例中，固定件2的本体21上设置汇流排连接区域，固定件2为导电材料制作，凸出部22的第二极柱孔221邻近极柱3的第二端用于限制极柱3的配合部31脱离凸出部22，极柱3的配合部31形状与第二极柱孔221相适应，配合部31可以发生形变进入第二极柱孔221内，之后配合部31可以恢复形变实现配合部31与凸出部22的固定。配合部31的自由端自第二极柱孔221邻近极柱3的一端进入，配合部31的自由端恢复形变后自由端的横截面积大于第二极柱孔221的邻近极柱的一端的横截面积，因此配合部31的自由端不能脱离凸出部22的第二极柱孔221。配合部31和第二极柱孔221配合实现了固定件2和极柱3的固定，固定件2与极柱3相连增加了极柱3通过电流的横截面积，增强了电池顶盖过流能力。In some embodiments, a bus connection area is provided on the body 21 of the fixing part 2, the fixing part 2 is made of conductive material, and the second pole hole 221 of the protruding part 22 is adjacent to the second end of the pole 3 for limiting the pole. The fitting part 31 of the pole 3 is separated from the protruding part 22, and the shape of the fitting part 31 of the pole 3 is adapted to the second pole hole 221. The fitting part 31 can deform into the second pole hole 221, and then the fitting part 31 can Restoring the deformation realizes the fixation of the fitting portion 31 and the protruding portion 22 . The free end of the fitting portion 31 enters from the end of the second pole hole 221 adjacent to the pole 3. After the free end of the fitting portion 31 recovers its deformation, the cross-sectional area of the free end is greater than the cross-sectional area of the end of the second pole hole 221 adjacent to the pole. cross-sectional area, so the free end of the fitting portion 31 cannot escape from the second pole hole 221 of the protruding portion 22 . The matching part 31 and the second pole hole 221 cooperate to achieve the fixation of the fixing part 2 and the pole 3. The connection between the fixing part 2 and the pole 3 increases the cross-sectional area of the current passing through the pole 3 and enhances the overcurrent of the battery top cover. ability.
在一些实施例中，如图1、图3和图4所示，第二极柱孔221包括从下至上的方向依次连接的第一段和第二段，第一段的横截面积小于第二段的横截面积，配合部31包括从下至上的方向依次连接的第一配合部和第二配合部，第一配合部的横截面积小于第二配合部的横 截面积。In some embodiments, as shown in Figures 1, 3 and 4, the second pole hole 221 includes a first section and a second section connected in sequence from bottom to top, and the cross-sectional area of the first section is smaller than that of the second section. The cross-sectional area of the two sections, the fitting part 31 includes a first fitting part and a second fitting part connected in sequence from bottom to top, and the cross-sectional area of the first fitting part is smaller than the cross-sectional area of the second fitting part. cross-sectional area.
在一些实施例中，第二极柱孔221的第一段用来限制第二配合部脱离凸出部22，第二配合部的横截面积大于第一段的横截面积，第一配合部的横截面积与第一段的横截面积相一致或者稍大于第一段的横截面积实现间隙配合或者过盈配合。第二配合部的横截面积与第二段的横截面积相一致或者稍大于第一段的横截面积实现间隙配合或者过盈配合。In some embodiments, the first section of the second pole hole 221 is used to restrict the second fitting part from disengaging from the protruding part 22. The cross-sectional area of the second fitting part is larger than the cross-sectional area of the first section. The first fitting part The cross-sectional area is consistent with or slightly larger than the cross-sectional area of the first section to achieve clearance fit or interference fit. The cross-sectional area of the second fitting part is consistent with or slightly larger than the cross-sectional area of the second section to achieve clearance fit or interference fit.
在一些实施例中，配合部31的自由端的端面与本体在顶盖片1的厚度方向一侧的端面共面。In some embodiments, the end surface of the free end of the fitting portion 31 is coplanar with the end surface of the body on one side in the thickness direction of the top cover sheet 1 .
由此，极柱3经过第二极柱孔221进入固定件2的一端与本体在顶盖片1的厚度方向一侧的端面共面，固定件2和极柱3在顶盖片1厚度方向上的整体高度小。固定件2和极柱3共面增加了极柱3通过电流的横截面积，增强电池顶盖过流能力。Therefore, one end of the pole 3 entering the fixing member 2 through the second pole hole 221 is coplanar with the end surface of the body on one side in the thickness direction of the top cover sheet 1. The fixing member 2 and the pole 3 are in the thickness direction of the top cover sheet 1. The overall height is small. The coplanarity of the fixing piece 2 and the pole 3 increases the cross-sectional area of the pole 3 through which current flows, thereby enhancing the overcurrent capability of the battery top cover.
在一些实施例中，如图1、图3和图4所示，在正交于顶盖片1的厚度方向上的投影面内，汇流排连接区域的投影位于第一极柱孔11的投影内。In some embodiments, as shown in FIGS. 1 , 3 and 4 , in the projection plane orthogonal to the thickness direction of the top cover sheet 1 , the projection of the bus connection area is located at the projection of the first pole hole 11 Inside.
在一些实施例中，汇流排连接区域的形状为环形区域，环形区域的外边缘为与第一极柱孔11的内径相等的圆形，环形区域的内边缘与极柱3的横截面形状相一致，极柱3可以是矩形柱也可是圆形柱或者椭圆形柱等形状，因而环形区域的内边缘为矩形或者圆形或椭圆形等形状。In some embodiments, the shape of the bus connection area is an annular area, the outer edge of the annular area is a circle equal to the inner diameter of the first pole hole 11 , and the inner edge of the annular area is consistent with the cross-sectional shape of the pole 3 Consistently, the pole 3 can be a rectangular column, a circular column, an elliptical column, etc., so the inner edge of the annular area is in a rectangular, circular, or elliptical shape.
在一些实施例中，如图1、图3和图4所示，电池顶盖还包括第一绝缘件4，第一绝缘件设在固定件2和顶盖片1之间，第一绝缘件4设有供凸出部22穿过的第三极柱孔41，第一绝缘件4远离顶盖片1的表面设有环绕第三极柱孔41的限位槽42，本体21配合在限位槽42内，第一绝缘件4远离固定件2的表面具有环绕第三极柱孔41的限位环43，限位环43的至少部分位于第一极柱孔11内以隔开顶盖片1和凸出部22。In some embodiments, as shown in Figures 1, 3 and 4, the battery top cover further includes a first insulating member 4, which is disposed between the fixing member 2 and the top cover sheet 1. 4 is provided with a third pole hole 41 for the protruding portion 22 to pass through. The surface of the first insulating member 4 away from the top cover piece 1 is provided with a limiting groove 42 surrounding the third pole hole 41. The body 21 is fitted in the limiting groove 42. In the slot 42, the surface of the first insulating member 4 away from the fixing member 2 has a limiting ring 43 surrounding the third pole hole 41. At least part of the limiting ring 43 is located in the first pole hole 11 to separate the top cover. Piece 1 and protrusion 22.
在一些实施例中，第一绝缘件4设在固定件和顶盖片1之间能够将固定件2和顶盖片1分隔开起到绝缘的作用，第一绝缘件4的限位槽42形状和大小与固定件2的本体21相配合，固定件2的本体21为圆盘形状时，本体21配合在限位槽42内，本体21在顶盖片1的厚度方向的高度与第一绝缘件4的限位槽42的槽壁高度一致，限位环43的内径与固定件2的凸出部22相配合，限位环43的外径与第一极柱孔11的内径相配合，由此本体21为圆盘形状时，限位环43至少部分处于第一极柱孔11内并隔开顶盖片1和凸出部22，便于密封和绝缘。In some embodiments, the first insulating member 4 is disposed between the fixing member 2 and the top cover sheet 1 to separate the fixing member 2 and the top cover sheet 1 and play an insulating role. The limiting groove of the first insulating member 4 The shape and size of 42 match the body 21 of the fixing member 2. When the body 21 of the fixing member 2 is in the shape of a disc, the body 21 fits in the limiting groove 42. The height of the body 21 in the thickness direction of the top cover sheet 1 is equal to the height of the first body 21 of the fixing member 2. The height of the groove wall of the limiting groove 42 of an insulating member 4 is consistent, the inner diameter of the limiting ring 43 matches the protruding portion 22 of the fixing member 2, and the outer diameter of the limiting ring 43 matches the inner diameter of the first pole hole 11. Accordingly, when the main body 21 is in the shape of a disc, the limiting ring 43 is at least partially located in the first pole hole 11 and separates the top cover piece 1 and the protruding portion 22 to facilitate sealing and insulation.
在一些实施例中，如图1、图3和图4所示，电池顶盖还包括第二绝缘件5，第二绝缘件5的至少部分位于顶盖片1和极柱3之间，顶盖片1的邻近极柱3的一面设有环绕第一极柱孔11的第一定位槽12，第二绝缘件5的远离极柱3的一面对应地设置有突出部51，突出部51与第一定位槽12配合。In some embodiments, as shown in FIGS. 1 , 3 and 4 , the battery top cover further includes a second insulating member 5 , at least part of the second insulating member 5 is located between the top cover sheet 1 and the pole 3 . The side of the cover 1 adjacent to the pole 3 is provided with a first positioning groove 12 surrounding the first pole hole 11. The side of the second insulating member 5 away from the pole 3 is correspondingly provided with a protruding portion 51. The protruding portion 51 is The first positioning groove 12 fits.
由此，第二绝缘件5将顶盖片1和极柱3分隔开起到绝缘的作用，第一定位槽12和突出部51配合有利于第二绝缘件5与顶盖片1紧密贴合，加强密封和绝缘性能。Therefore, the second insulating member 5 separates the top cover sheet 1 and the pole 3 and plays an insulating role. The cooperation of the first positioning groove 12 and the protruding portion 51 is conducive to the close contact between the second insulating member 5 and the top cover sheet 1 Combined to enhance sealing and insulation performance.
在一些实施例中，如图1、图3和图4所示，在正交于顶盖片1的厚度方向上的投影面内，第二绝缘件5的投影位于顶盖片1的投影内，第二绝缘件5设有供极柱3穿过的第四极 柱孔52，极柱3具有封闭部32，封闭部32封闭第四极柱孔52，在正交于顶盖片1的厚度方向上的投影面内，第四极柱孔52的投影位于封闭部32的投影内。In some embodiments, as shown in Figures 1, 3 and 4, in the projection plane orthogonal to the thickness direction of the top cover sheet 1, the projection of the second insulating member 5 is located within the projection of the top cover sheet 1 , the second insulator 5 is provided with a fourth pole for the pole 3 to pass through. Post hole 52, the pole post 3 has a closing portion 32, the closing portion 32 closes the fourth pole hole 52, in the projection plane orthogonal to the thickness direction of the top cover sheet 1, the projection of the fourth pole hole 52 is located in the closed within the projection of part 32.
在一些实施例中，极柱3的封闭部32和配合部31分别设置在极柱3的第一端和第二端，极柱3的配合部31穿过第二极柱孔221进入固定件2时，封闭部32与第二绝缘件5贴合并与固定件2的凸出部22接触，封闭部32封闭第四极柱孔52加强了密封和绝缘性能。第二绝缘件5的大小与顶盖片1相配合，第二绝缘件5将极柱3与顶盖片1分隔开，第二绝缘件5能够加强密封和绝缘性能。In some embodiments, the closing portion 32 and the fitting portion 31 of the pole 3 are respectively provided at the first end and the second end of the pole 3, and the fitting portion 31 of the pole 3 passes through the second pole hole 221 and enters the fixing member. 2, the closing portion 32 is attached to the second insulating member 5 and in contact with the protruding portion 22 of the fixing member 2, and the closing portion 32 closes the fourth pole hole 52 to enhance the sealing and insulation performance. The size of the second insulating member 5 matches the top cover sheet 1. The second insulating member 5 separates the pole 3 from the top cover sheet 1. The second insulating member 5 can enhance the sealing and insulation performance.
在一些实施例中，如图3和图4所示，第二绝缘件5远离顶盖片1的表面设有环绕第四极柱孔52的第二定位槽53，封闭部32配合在第二定位槽53内。In some embodiments, as shown in FIGS. 3 and 4 , the surface of the second insulating member 5 away from the top cover sheet 1 is provided with a second positioning groove 53 surrounding the fourth pole hole 52 , and the closing portion 32 fits in the second positioning groove 53 . inside the positioning groove 53.
在一些实施例中，第二定位槽53的槽壁的高度与封闭部32在顶盖片1厚度方向的高度相配合，封闭部32进入第二定位槽53内能够降低电池顶盖在顶盖片1厚度方向的整体高度，优选的，封闭部32远离固定件2一侧的侧面与第二绝缘件5远离顶盖片1的表面共面。In some embodiments, the height of the groove wall of the second positioning groove 53 matches the height of the closing portion 32 in the thickness direction of the top cover sheet 1 , and the closing portion 32 entering the second positioning groove 53 can lower the battery top cover. The overall height of the sheet 1 in the thickness direction, preferably, the side of the closing portion 32 away from the fixing member 2 is coplanar with the surface of the second insulating member 5 away from the top cover sheet 1 .
在一些实施例中，第一绝缘件4的材料为导热材料。In some embodiments, the material of the first insulating member 4 is a thermally conductive material.
在一些实施例中，第一绝缘件4可以是硅胶片等材质，导热材料的导热率大于0.24W(m*K)的相关材料均可根据实际情况选用。由此，导热材料能够增强散热最大程度的降低电池顶盖的过流温升，保证电芯的安全性能。In some embodiments, the first insulating member 4 can be made of silicone sheet or other materials, and any related material with a thermal conductivity greater than 0.24W (m*K) can be selected according to actual conditions. As a result, the thermally conductive material can enhance heat dissipation, minimize the overcurrent temperature rise of the battery top cover, and ensure the safety performance of the battery core.
根据本公开实施例的电芯，电池电芯包括电池顶盖。According to a battery cell according to an embodiment of the present disclosure, the battery cell includes a battery top cover.
根据本公开实施例的电芯的技术优势与上述电池顶盖的技术优势相同，此处不再赘述。The technical advantages of the battery core according to the embodiment of the present disclosure are the same as the technical advantages of the above-mentioned battery top cover, and will not be described again here.
根据本公开实施例的动力电池，动力电池包括电芯。According to the power battery according to the embodiment of the present disclosure, the power battery includes a battery cell.
根据本公开实施例的动力电池的技术优势与上述电芯的技术优势相同，此处不再赘述。The technical advantages of the power battery according to the embodiment of the present disclosure are the same as the technical advantages of the above-mentioned battery cells, and will not be described again here.
本公开提供的电池顶盖的固定件的凸出部配合在第一极柱孔固定极柱内降低了极柱凸出于顶盖片的高度具备极柱整体高度低的优点。The protruding portion of the fixing member of the battery top cover provided by the present disclosure fits into the first pole hole to fix the pole, thereby reducing the height of the pole protruding from the top cover sheet, which has the advantage of low overall height of the pole.
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”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。In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis", The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply the referred devices or elements. Must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations on the disclosure.
此外，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至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
在本公开中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。 In this disclosure, unless otherwise explicitly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be mechanically connected, electrically connected or communicable with each other; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction between two elements, Unless otherwise expressly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.
在本公开中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。In this disclosure, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features may be in indirect contact through an intermediary. touch. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.
在本公开中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等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必须针对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一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" or the like mean that a particular feature, structure, material, or other feature is described in connection with the embodiment or example. Features are included in at least one embodiment or example of the disclosure. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域普通技术人员对上述实施例进行的变化、修改、替换和变型均在本公开的保护范围内。 Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and should not be construed as limitations of the present disclosure. Changes, modifications, and changes to the above-described embodiments may be made by those of ordinary skill in the art. Substitutions and modifications are within the scope of this disclosure.

Claims (11)

  1. 一种电池顶盖，包括：A battery top cover including:
    顶盖片，所述顶盖片上设有一对第一极柱孔；A top cover piece, the top cover piece is provided with a pair of first pole holes;
    固定件，所述固定件包括本体和设在所述本体上的凸出部，所述本***于所述顶盖片的厚度方向上的一侧，所述凸出部配合在所述第一极柱孔内；和The fixing part includes a body and a protruding part provided on the body. The body is located on one side of the top cover sheet in the thickness direction. The protruding part is fitted on the first pole. inside the column hole; and
    极柱，所述极柱的至少部分位于所述顶盖片的厚度方向上的另一侧，且所述极柱与所述固定件相连，所述极柱用于连接卷芯。At least part of the pole is located on the other side of the top cover sheet in the thickness direction, and the pole is connected to the fixing member, and the pole is used to connect the winding core.
  2. 根据权利要求1所述的电池顶盖，其中，所述凸出部设有第二极柱孔，所述第二极柱孔的邻近所述极柱的一端的横截面积小于所述第二极柱孔其余位置的横截面积，所述极柱具有配合部，所述配合部配合在所述第二极柱孔内，所述配合部的自由端的横截面积大于所述配合部其余位置的横截面积。The battery top cover according to claim 1, wherein the protruding portion is provided with a second pole hole, and a cross-sectional area of an end of the second pole hole adjacent to the pole is smaller than the second pole hole. The cross-sectional area of the rest of the pole hole, the pole has a fitting part, the fitting part fits in the second pole hole, the cross-sectional area of the free end of the fitting part is larger than the rest of the fitting part cross-sectional area.
  3. 根据权利要求2所述的电池顶盖，其中，所述第二极柱孔包括从下至上的方向依次连接的第一段和第二段，所述第一段的横截面积小于所述第二段的横截面积，所述配合部包括从下至上的方向依次连接的第一配合部和第二配合部，所述第一配合部的横截面积小于所述第二配合部的横截面积。The battery top cover according to claim 2, wherein the second pole hole includes a first section and a second section connected in sequence from bottom to top, and the cross-sectional area of the first section is smaller than that of the third section. The cross-sectional area of the two sections, the fitting part includes a first fitting part and a second fitting part connected in sequence from bottom to top, the cross-sectional area of the first fitting part is smaller than the cross-section of the second fitting part area.
  4. 根据权利要求2所述的电池顶盖，其中，所述配合部的自由端的端面与所述本体在所述顶盖片的厚度方向一侧的端面共面。The battery top cover according to claim 2, wherein an end surface of the free end of the fitting portion is coplanar with an end surface of the body on one side in the thickness direction of the top cover sheet.
  5. 根据权利要求1所述的电池顶盖，其中，电池顶盖还包括第一绝缘件，所述第一绝缘件设在所述固定件和所述顶盖片之间，所述第一绝缘件设有供所述凸出部穿过的第三极柱孔，所述第一绝缘件远离所述顶盖片的表面设有环绕所述第三极柱孔的限位槽，所述本体配合在所述限位槽内，所述第一绝缘件远离所述固定件的表面具有环绕所述第三极柱孔的限位环，所述限位环的至少部分位于第一极柱孔内。The battery top cover according to claim 1, wherein the battery top cover further includes a first insulating member provided between the fixing member and the top cover sheet, the first insulating member A third pole hole is provided for the protrusion to pass through. The surface of the first insulating member away from the top cover piece is provided with a limiting groove surrounding the third pole hole. The body fits In the limiting groove, the surface of the first insulating member away from the fixing member has a limiting ring surrounding the third pole hole, and at least part of the limiting ring is located in the first pole hole. .
  6. 根据权利要求5所述的电池顶盖，其中，电池顶盖还包括第二绝缘件，所述第二绝缘件的至少部分位于所述顶盖片和所述极柱之间。The battery top cover according to claim 5, wherein the battery top cover further includes a second insulating member, at least part of the second insulating member is located between the top cover sheet and the pole.
  7. 根据权利要求6所述的电池顶盖，其中，所述顶盖片的邻近所述极柱的一面设有环绕所述第一极柱孔的第一定位槽，所述第二绝缘件的远离所述极柱的一面对应地设置有突出部，所述突出部与所述第一定位槽配合。The battery top cover according to claim 6, wherein a first positioning groove surrounding the first pole hole is provided on a side of the top cover sheet adjacent to the pole, and the second insulating member is further away from the A protruding portion is correspondingly provided on one side of the pole, and the protruding portion cooperates with the first positioning groove.
  8. 根据权利要求6所述的电池顶盖，其中，在正交于所述顶盖片的厚度方向上的投影面内，所述第二绝缘件的投影位于所述顶盖片的投影内，所述第二绝缘件设有供所述极柱穿过的第四极柱孔，所述极柱具有封闭部，所述封闭部封闭所述第四极柱孔，在正交于所述顶盖片的厚度方向上的投影面内，所述第四极柱孔的投影位于所述封闭部的投影内。The battery top cover according to claim 6, wherein in a projection plane orthogonal to the thickness direction of the top cover sheet, the projection of the second insulating member is located within the projection of the top cover sheet, so The second insulating member is provided with a fourth pole hole for the pole to pass through, and the pole has a closing portion. The closing portion closes the fourth pole hole and is orthogonal to the top cover. In the projection plane in the thickness direction of the sheet, the projection of the fourth pole hole is located within the projection of the closed portion.
  9. 根据权利要求8所述的电池顶盖，其中，所述第二绝缘件远离所述顶盖片的表面设有环绕所述第四极柱孔的第二定位槽，所述封闭部配合在所述第二定位槽内。The battery top cover according to claim 8, wherein the surface of the second insulating member away from the top cover piece is provided with a second positioning groove surrounding the fourth pole hole, and the closing portion is fitted in the into the second positioning groove.
  10. 一种电芯，包括如权利要求1至9任一项所述的电池顶盖。A battery core, including the battery top cover according to any one of claims 1 to 9.
  11. 一种动力电池，包括权利要求10所述的电芯。 A power battery, including the cell according to claim 10.
PCT/CN2023/098554 2022-06-06 2023-06-06 Battery top cover, battery cell, and power battery WO2023236941A1 (en)

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CN218385452U (en) * 2022-06-06 2023-01-24 北京车和家汽车科技有限公司 Battery top cap, electric core and power battery

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212113769U (en) * 2020-06-30 2020-12-08 蜂巢能源科技有限公司 Power battery's electric core apron, electric core, module and battery package
CN212113771U (en) * 2020-06-30 2020-12-08 蜂巢能源科技有限公司 Power battery's electric core apron, electric core, module and battery package
CN112864502A (en) * 2019-11-12 2021-05-28 深圳市海瀚新能源技术有限公司 Top cover assembly, shell and secondary battery
CN213546427U (en) * 2020-12-16 2021-06-25 上海兰钧新能源科技有限公司 Top cover structure and battery
CN215911486U (en) * 2021-09-29 2022-02-25 蜂巢能源科技有限公司 Top cover of battery and battery
CN218385452U (en) * 2022-06-06 2023-01-24 北京车和家汽车科技有限公司 Battery top cap, electric core and power battery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112864502A (en) * 2019-11-12 2021-05-28 深圳市海瀚新能源技术有限公司 Top cover assembly, shell and secondary battery
CN212113769U (en) * 2020-06-30 2020-12-08 蜂巢能源科技有限公司 Power battery's electric core apron, electric core, module and battery package
CN212113771U (en) * 2020-06-30 2020-12-08 蜂巢能源科技有限公司 Power battery's electric core apron, electric core, module and battery package
CN213546427U (en) * 2020-12-16 2021-06-25 上海兰钧新能源科技有限公司 Top cover structure and battery
CN215911486U (en) * 2021-09-29 2022-02-25 蜂巢能源科技有限公司 Top cover of battery and battery
CN218385452U (en) * 2022-06-06 2023-01-24 北京车和家汽车科技有限公司 Battery top cap, electric core and power battery

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