CN218385452U - Battery top cap, electric core and power battery - Google Patents
Battery top cap, electric core and power battery Download PDFInfo
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- CN218385452U CN218385452U CN202221397134.8U CN202221397134U CN218385452U CN 218385452 U CN218385452 U CN 218385452U CN 202221397134 U CN202221397134 U CN 202221397134U CN 218385452 U CN218385452 U CN 218385452U
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- 230000001174 ascending effect Effects 0.000 claims abstract description 6
- 239000012212 insulator Substances 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
- 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
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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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
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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
- H01M50/531—Electrode connections inside a battery casing
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- 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
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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
The utility model discloses a battery top cap, electric core and power battery, battery top cap includes the top cap piece, mounting and utmost point post, be equipped with a pair of interval arrangement's first utmost point post hole on the top cap piece, the mounting includes the body and establishes the bulge on the body, the body is located the ascending one side of thickness side of top cap piece, the bulge cooperation is downthehole at first utmost point post, the side that the bulge was kept away from to the body is used for forming busbar connection area, the at least part of utmost point post is located the ascending opposite side of thickness side of top cap piece, and utmost point post links to each other with the mounting, utmost point post is used for connecting the book core. The utility model provides a protruding portion cooperation of battery top cap's mounting has reduced utmost point post protrusion in the fixed utmost point post of first utmost point post hole highly possesses the advantage that utmost point post overall height is low in the top cap piece.
Description
Technical Field
The utility model relates to a lithium ion battery technical field especially relates to a battery top cap, electric core and power battery.
Background
In the correlation technique, lithium ion battery top cap utmost point post part mainly adopts riveting post + riveting piece form, this scheme is subject to design and processing factor, the size of riveting post is limited, influence the current capacity of electric core, cause the electric core temperature rise higher under the heavy current condition, influence electric core safety, and the thickness of the influence riveting piece that receives the welding busbar is general minimum 3mm, cause electric core utmost point post whole height to receive the height that riveting piece restriction electric core utmost point post is greater than the height of riveting piece, influence electric core energy density, utmost point post receives the influence of riveting process, the diameter of utmost point post all is less than 10mm generally, utmost point post hardly satisfies the requirement of the electric core of high magnification charge-discharge, lead to electric core temperature rise in the charging-discharging process, the condition such as insulating seal inefficacy, can cause the explosion of catching a fire when serious.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent.
Therefore, the embodiment of the utility model provides a battery top cap, the bulge cooperation of this battery top cap's mounting has reduced utmost point post protrusion in the fixed utmost point post of first utmost point post hole highly has the advantage that utmost point post whole height is low.
According to the utility model discloses battery top cap, battery top cap include top cap piece, mounting and utmost point post, be equipped with a pair of interval arrangement's first utmost point post hole on the top cap piece, the mounting includes the body and establishes bulge on the body, the body is located one side on the thickness direction of top cap piece, the bulge cooperation is in first utmost point post is downthehole, the body is kept away from the side of bulge is used for forming busbar connection area, the at least part of utmost point post is located the ascending opposite side of thickness direction of top cap piece, just utmost point post with the mounting links to each other, utmost point post is used for connecting the book core.
According to the utility model discloses the bulge cooperation of battery top cap's mounting has reduced utmost point post protrusion in the fixed utmost point post of first utmost point post hole highly has the advantage that utmost point post whole height is low.
In some embodiments, the projection is provided with a second pole post hole, the cross-sectional area of one end of the second pole post hole adjacent to the pole post is smaller than the cross-sectional area of the rest position of the second pole post hole, the pole post is provided with a matching part, the matching part is matched in the second pole post hole, and the cross-sectional area of the free end of the matching part is larger than the cross-sectional area of the rest position of the matching part.
In some embodiments, the second pole hole includes a first section and a second section that are sequentially connected from the bottom to the top, the cross-sectional area of the first section is smaller than that of the second section, the fitting portion includes a first fitting portion and a second fitting portion that are sequentially connected from the bottom to the top, and the cross-sectional area of the first fitting portion is smaller than that of the second fitting portion.
In some embodiments, an end surface of a free end of the fitting portion is coplanar with an end surface of the body on a thickness direction side of the top cover sheet.
In some embodiments, the battery top cover further includes a first insulating member, the first insulating member is disposed between the fixing member and the top cover plate, the first insulating member is provided with a third pole hole for the protrusion to pass through, a limiting groove surrounding the third pole hole is disposed on a surface of the first insulating member away from the top cover plate, the body is fitted in the limiting groove, a limiting ring surrounding the third pole hole is disposed on a surface of the first insulating member away from the fixing member, and at least a part of the limiting ring is located in the first pole hole.
In some embodiments, the battery top cap further comprises a second insulator, at least a portion of the second insulator being located between the top cap sheet and the terminal post.
In some embodiments, a face of the top cover sheet adjacent to the pole is provided with a first positioning groove surrounding the first pole hole, and a face of the second insulating member far away from the pole is correspondingly provided with a protruding part which is matched with the first positioning groove.
In some embodiments, in a projection plane orthogonal to the thickness direction of the top cover plate, a projection of the second insulating member is located in the projection of the top cover plate, the second insulating member is provided with a fourth pole hole through which the pole passes, the pole has a sealing portion which seals the fourth pole hole, and in a projection plane orthogonal to the thickness direction of the top cover plate, a projection of the fourth pole hole is located in the projection of the sealing portion.
In some embodiments, a surface of the second insulator remote from the top cover piece is provided with a second detent surrounding the fourth stud hole, and the closure fits within the second detent.
According to the utility model discloses electric core, battery electricity core include the battery top cap.
According to the utility model discloses power battery, power battery include electric core.
Drawings
Fig. 1 is an exploded schematic view of a battery top cover according to an embodiment of the present invention.
Fig. 2 is a front view of a battery top cover according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a battery top cap in an embodiment in accordance with the invention.
Fig. 4 is a partially enlarged schematic view of a cross-sectional view of a battery top cover according to an embodiment of the present invention.
Fig. 5 is an isometric illustration of a battery top cap in accordance with an embodiment of the invention.
Reference numerals are as follows: 1. a top cover sheet; 11. a first pole post aperture; 12. a first positioning groove; 2. a fixing member; 21. a body; 22. A projection; 221. a second pole post hole; 3. a pole column; 31. a fitting portion; 32. a closing part; 4. a first insulating member; 41. a third tripolar hole; 42. a limiting groove; 43. a limiting ring; 5. a second insulating member; 51. a protrusion; 52. a fourth column aperture; 53. A second positioning groove.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
According to the utility model discloses battery top cap, as shown in fig. 1 to 5, battery top cap includes top cap piece 1, mounting 2, utmost point post 3, first insulating part 4 and second insulating part 5, be equipped with a pair of first utmost point post hole 11 on the top cap piece 1, mounting 2 includes body 21 and establishes the bulge 22 on body 21, body 21 is located the ascending one side of thickness side of top cap piece 1, the bulge 22 cooperation is in first utmost point post hole 11, the at least part of utmost point post 3 is located the ascending opposite side of thickness side of top cap piece 1, and utmost point post 3 links to each other with mounting 2, utmost point post 3 is used for connecting the book core. Utmost point post 3 and the cooperation of mounting 2, the bulge of mounting 2 has reduced the protrusion of mounting 2 in the height of top cap piece 1 in first utmost point post hole 11 in the cooperation of the bulge 22 of mounting 2, has reduced the weight of battery top cap structure, can promote the energy density of electric core. Fig. 1 is a diagram of explosion in the up-down direction. Fig. 3 is a cross-sectional view taken along direction a in fig. 2. Specifically, the first pole post holes 11 may be arranged at intervals on the top cover plate 1, the side of the body 21 away from the projection 22 is used to form a bus bar connection area, the first insulating member 4 is provided between the fixing member 2 and the top cover plate 1 to separate the fixing member 2 and the top cover plate 1, and at least a part of the second insulating member 5 is located between the top cover plate 1 and the pole post 3 to separate the top cover plate 1 and the pole post 3
According to the utility model discloses the bulge cooperation of battery top cap's mounting has reduced utmost point post protrusion in the height of top cap piece in the fixed utmost point post of first utmost point post hole, has the advantage that utmost point post whole height is low.
In some embodiments, as shown in fig. 1 to 5, the protruding portion 22 is provided with a second pole post hole 221, a cross-sectional area of one end of the second pole post hole 221 adjacent to the pole post 3 is smaller than a cross-sectional area of the rest of the second pole post hole 221, the pole post 3 has a fitting portion 31, the fitting portion 31 is fitted in the second pole post hole 221, and a cross-sectional area of a free end of the fitting portion 31 is larger than a cross-sectional area of the rest of the fitting portion 31. The axial direction of the second pole stud hole 221 is the same as the thickness direction of the top cover plate 1, the thickness direction of the top cover plate 1 is the same as the up-down direction in fig. 1, one of the two ends of the second pole stud hole 221 is adjacent to the body on one side of the thickness direction of the top cover plate 1, the second end of the two ends of the second pole stud hole 221 is adjacent to the pole 3 on the other side of the thickness direction of the top cover plate 1, the cross-sectional area of the rest of the second pole stud hole 221, i.e. the cross-sectional area of the second pole stud hole 221 on the side away from the second end of the second pole stud hole 221, becomes larger along with the increase of the distance from the pole 3 in the axial direction.
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 on the side adjacent to the thickness direction of the top cover sheet 1 is a free end of the fitting portion 31, the free end is an end of the fitting portion 31 for entering the second pole hole 221, and the cross-sectional area of the rest position 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.
Specifically, set up busbar connection area on the body 21 of mounting 2, mounting 2 is the conducting material preparation, and the second utmost point post hole 221 of bulge 22 is close to the second end of utmost point post 3 and is used for restricting cooperation portion 31 of utmost point post 3 and breaks away from bulge 22, and the cooperation portion 31 shape and the second utmost point post hole 221 of utmost point post 3 suit, and cooperation portion 31 can take place deformation and get into in second utmost point post hole 221, and later cooperation portion 31 can resume deformation and realize cooperation portion 31 and bulge 22 fixed. The free end of the fitting part 31 enters from the end of the second pole hole 221 adjacent to the pole 3, and the cross-sectional area of the free end of the fitting part 31 is larger than that of the end of the second pole hole 221 adjacent to the pole after the free end of the fitting part 31 recovers its shape, so that the free end of the fitting part 31 cannot be separated from the second pole hole 221 of the protruding part 22. The cooperation portion 31 and the cooperation of second utmost point post hole 221 have realized the fixed of mounting 2 and utmost point post 3, and mounting 2 links to each other with utmost point post 3 and has increased the cross-sectional area that utmost point post 3 passed through the electric current, has strengthened battery top cap current-carrying capacity.
In some embodiments, as shown in fig. 1, 3 and 4, the second pole hole 221 includes a first section and a second section sequentially connected from the bottom to the top, the cross-sectional area of the first section is smaller than that of the second section, the fitting portion 31 includes a first fitting portion and a second fitting portion sequentially connected from the bottom to the top, and the cross-sectional area of the first fitting portion is smaller than that of the second fitting portion.
Specifically, the first section of the second post hole 221 is used to restrict the second fitting portion from coming off the projection 22, the cross-sectional area of the second fitting portion is larger than that of the first section, and the cross-sectional area of the first fitting portion is identical to that of the first section or slightly larger than that of the first section, so that clearance fit or interference fit is achieved. The cross-sectional area of the second fitting part is consistent with that of the second section or slightly larger than that of the first section, so that clearance fit or interference fit is realized.
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 the thickness direction side of the top cover sheet 1.
Therefore, one end of the pole 3 entering the fixing part 2 through the second pole hole 221 is coplanar with the end face of the body on one side of the top cover plate 1 in the thickness direction, and the fixing part 2 and the pole 3 are small in the overall height in the thickness direction of the top cover plate 1. The coplanarity of the fixing part 2 and the pole 3 increases the cross-sectional area of the pole 3 passing current, and the overcurrent capacity of the top cover of the battery is enhanced.
In some embodiments, as shown in fig. 1, 3 and 4, the projection of the bus bar connection area is located within the projection of the first pole hole 11 in a projection plane orthogonal to the thickness direction of the top cover sheet 1.
Specifically, the shape of the busbar connection region is an annular region, the outer edge of the annular region is circular and has the same inner diameter as the first pole hole 11, the inner edge of the annular region is consistent with the cross-sectional shape of the pole 3, the pole 3 can be rectangular, circular or elliptical, and the like, and thus the inner edge of the annular region is rectangular, circular or elliptical, and the like.
In some embodiments, as shown in fig. 1, fig. 3 and fig. 4, the battery top cap further includes a first insulating member 4, the first insulating member is disposed between the fixing member 2 and the top cover plate 1, the first insulating member 4 is provided with a third stud hole 41 for the protrusion 22 to pass through, a surface of the first insulating member 4 away from the top cover plate 1 is provided with a limiting groove 42 surrounding the third stud hole 41, the body 21 is fitted in the limiting groove 42, a surface of the first insulating member 4 away from the fixing member 2 is provided with a limiting ring 43 surrounding the third stud hole 41, and at least a portion of the limiting ring 43 is located in the first stud hole 11 to separate the top cover plate 1 and the protrusion 22.
Specifically, first insulating part 4 establishes and can separate mounting 2 and top cap piece 1 between mounting and top cap piece 1 and play insulating effect, the spacing groove 42 shape and the size of first insulating part 4 cooperate with the body 21 of mounting 2, when the body 21 of mounting 2 is the disc shape, body 21 cooperation is in spacing groove 42, the height of body 21 in the thickness direction of top cap piece 1 is highly unanimous with the cell wall height of the spacing groove 42 of first insulating part 4, the internal diameter of spacing ring 43 cooperatees with the bulge 22 of mounting 2, the external diameter of spacing ring 43 cooperatees with the internal diameter of first utmost point post hole 11, when this body 21 is the disc shape, spacing ring 43 is at least partly in first utmost point post hole 11 and separates top cap piece 1 and bulge 22, be convenient for sealed and insulating.
In some embodiments, as shown in fig. 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, a face of the top cover sheet 1 adjacent to the pole 3 is provided with a first positioning groove 12 surrounding the first pole hole 11, a face of the second insulating member 5 far away from the pole 3 is correspondingly provided with a protrusion 51, and the protrusion 51 is matched with the first positioning groove 12.
From this, second insulating part 5 separates top cap piece 1 and utmost point post 3 and plays insulating effect, and first constant head tank 12 and protruding portion 51 cooperation are favorable to second insulating part 5 and top cap piece 1 closely to be laminated, strengthen sealed and insulating properties.
In some embodiments, as shown in fig. 1, 3 and 4, in a projection plane orthogonal to the thickness direction of the top cover plate 1, a projection of the second insulating member 5 is located in the projection of the top cover plate 1, the second insulating member 5 is provided with a fourth pole hole 52 through which the pole 3 passes, the pole 3 has a closed portion 32, the closed portion 32 closes the fourth pole hole 52, and in a projection plane orthogonal to the thickness direction of the top cover plate 1, a projection of the fourth pole hole 52 is located in the projection of the closed portion 32.
Specifically, the sealing portion 32 and the fitting portion 31 of the pole 3 are respectively disposed at the first end and the second end of the pole 3, when the fitting portion 31 of the pole 3 passes through the second pole hole 221 and enters the fixing member 2, the sealing portion 32 fits to the second insulating member 5 and contacts with the protrusion 22 of the fixing member 2, and the sealing portion 32 seals the fourth pole hole 52, so that the sealing and insulating properties are enhanced. The size of second insulator 5 cooperatees with top cap piece 1, and second insulator 5 separates utmost point post 3 and top cap piece 1, and second insulator 5 can strengthen sealed and insulating properties.
In some embodiments, as shown in fig. 3 and 4, the surface of the second insulating member 5 remote from the top lid plate 1 is provided with a second positioning groove 53 surrounding the fourth column hole 52, and the closing part 32 is fitted in the second positioning groove 53.
Specifically, the height of the groove wall of the second positioning groove 53 matches the height of the closing part 32 in the thickness direction of the top cover plate 1, the closing part 32 entering the second positioning groove 53 can reduce the overall height of the battery top cover in the thickness direction of the top cover plate 1, and preferably, the side surface of the closing part 32 on the side away from the fixing part 2 is coplanar with the surface of the second insulating part 5 away from the top cover plate 1.
In some embodiments, the material of the first insulating member 4 is a thermally conductive material.
Specifically, the first insulating member 4 may be a silicon sheet or the like, and the heat conduction material may be made of a material having a heat conductivity greater than 0.24W (m × K) according to actual conditions. From this, the heat conduction material can strengthen the maximum reduction battery top cap's of heat dissipation temperature rise that overflows, guarantees the security performance of electric core.
According to the utility model discloses electric core, battery electricity core include the battery top cap.
According to the utility model discloses the technical advantage of electric core is the same with the technical advantage of above-mentioned battery top cap, and this is no longer described herein.
According to the utility model discloses power battery, power battery includes electric core.
According to the utility model discloses power battery's technical advantage is the same with the technical advantage of above-mentioned electric core, and it is no longer repeated here.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that various changes, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.
Claims (11)
1. A battery top cap, comprising:
the top cover plate is provided with a pair of first pole column holes;
the fixing piece comprises a body and a protruding part arranged on the body, the body is positioned on one side of the top cover plate in the thickness direction, and the protruding part is matched in the first pole hole; and
the at least part of utmost point post is located the ascending opposite side of thickness direction of top cap piece, just utmost point post with the mounting links to each other, utmost point post is used for connecting the book core.
2. The battery top cap of claim 1, wherein the protrusion is provided with a second pole post hole, the cross-sectional area of one end of the second pole post hole adjacent to the pole post is smaller than the cross-sectional area of the rest of the second pole post hole, the pole post has a fitting portion fitted in the second pole post hole, and the cross-sectional area of the free end of the fitting portion is larger than the cross-sectional area of the rest of the fitting portion.
3. The battery top cover according to claim 2, wherein the second pole hole comprises a first section and a second section which are sequentially connected from bottom to top, the cross-sectional area of the first section is smaller than that of the second section, the fitting part comprises a first fitting part and a second fitting part which are sequentially connected from bottom to top, and the cross-sectional area of the first fitting part is smaller than that of the second fitting part.
4. The battery top cap according to claim 2, wherein an end surface of a free end of the engaging portion is coplanar with an end surface of the body on one side in a thickness direction of the top lid sheet.
5. The battery top cap of claim 1, further comprising a first insulating member disposed between the fixing member and the top cover plate, wherein the first insulating member has a third post hole for the protrusion to pass through, a surface of the first insulating member away from the top cover plate has a limiting groove surrounding the third post hole, the body fits in the limiting groove, a surface of the first insulating member away from the fixing member has a limiting ring surrounding the third post hole, and at least a portion of the limiting ring is located in the first post hole.
6. The battery top cap of claim 5, further comprising a second insulator, at least a portion of the second insulator being located between the top cover sheet and the post.
7. The battery top cover according to claim 6, wherein a surface of the top cover plate adjacent to the pole is provided with a first positioning groove surrounding the first pole hole, and a surface of the second insulating member away from the pole is correspondingly provided with a protrusion, and the protrusion is matched with the first positioning groove.
8. The battery top cap according to claim 6, wherein a projection of the second insulating member is located within a projection of the top cap plate in a projection plane orthogonal to a thickness direction of the top cap plate, the second insulating member is provided with a fourth pole hole through which the pole passes, the pole has a closing portion that closes the fourth pole hole, and a projection of the fourth pole hole is located within a projection of the closing portion in a projection plane orthogonal to a thickness direction of the top cap plate.
9. The battery top cap of claim 8, wherein a surface of the second insulator remote from the top cap piece is provided with a second detent surrounding the fourth post hole, the closure fitting within the second detent.
10. A battery cell, characterized in that it comprises a battery top cover according to any of claims 1 to 9.
11. A power battery comprising the cell of claim 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221397134.8U CN218385452U (en) | 2022-06-06 | 2022-06-06 | Battery top cap, electric core and power battery |
| PCT/CN2023/098554 WO2023236941A1 (en) | 2022-06-06 | 2023-06-06 | Battery top cover, battery cell, and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221397134.8U CN218385452U (en) | 2022-06-06 | 2022-06-06 | Battery top cap, electric core and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218385452U true CN218385452U (en) | 2023-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221397134.8U Active CN218385452U (en) | 2022-06-06 | 2022-06-06 | Battery top cap, electric core and power battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN218385452U (en) |
| WO (1) | WO2023236941A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236941A1 (en) * | 2022-06-06 | 2023-12-14 | 北京车和家汽车科技有限公司 | Battery top cover, battery cell, and power battery |
Family Cites Families (6)
| 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 |
| 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 |
| 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 |
| 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 |
-
2022
- 2022-06-06 CN CN202221397134.8U patent/CN218385452U/en active Active
-
2023
- 2023-06-06 WO PCT/CN2023/098554 patent/WO2023236941A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236941A1 (en) * | 2022-06-06 | 2023-12-14 | 北京车和家汽车科技有限公司 | Battery top cover, battery cell, and power battery |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023236941A1 (en) | 2023-12-14 |
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