CN219246804U - Top cover and battery cell - Google Patents
Top cover and battery cell Download PDFInfo
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- CN219246804U CN219246804U CN202320105112.8U CN202320105112U CN219246804U CN 219246804 U CN219246804 U CN 219246804U CN 202320105112 U CN202320105112 U CN 202320105112U CN 219246804 U CN219246804 U CN 219246804U
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- top cover
- electrode connecting
- mounting hole
- connecting ring
- negative electrode
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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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Abstract
The utility model provides a top cover and an electric core, wherein the top cover comprises: the device comprises a top cover body, an anode connecting ring, a cathode connecting ring, a plastic separating plate, an anode connecting sheet and a cathode connecting sheet; the positive electrode connecting ring is fixed on the first mounting hole of the top cover body; the negative electrode connecting ring is fixed on the second mounting hole of the top cover body; the plastic separation plate is arranged below the top cover body; the positive electrode connecting ring is fixedly connected with the positive electrode connecting sheet through brazing; the negative electrode connecting ring is fixedly connected with the negative electrode connecting sheet through brazing. The positive connecting ring is connected with the positive connecting piece in a brazing mode, the negative connecting ring is connected with the negative connecting piece, and meanwhile, the positive connecting piece and the negative connecting piece can be made of the same material, so that the phenomenon of reverse fixation is avoided.
Description
Technical Field
The utility model relates to the field of lithium batteries, in particular to a top cover and an electric core.
Background
The lithium ion battery has the advantages of high energy density, small self-discharge, long cycle life and the like, and is widely applied to the fields of consumer electronics, power electric vehicles, energy storage and the like. The top cap of the cell serves as a precision component and plays an important role in the cell. At present, the top cover and the adapter piece are often welded by copper and copper, and aluminum by laser, and the adapter piece is made of different materials, so that the welding is unstable if the adapter piece is reversely connected.
The above problems are currently in need of solution.
Disclosure of Invention
The utility model aims to provide a top cover and a battery cell so as to improve the stability of electrode connection.
In order to solve the above technical problems, the present utility model provides a top cover, including:
the device comprises a top cover body, an anode connecting ring, a cathode connecting ring, a plastic separating plate, an anode connecting sheet and a cathode connecting sheet;
the positive electrode connecting ring is fixed on the first mounting hole of the top cover body;
the negative electrode connecting ring is fixed on the second mounting hole of the top cover body;
the plastic separation plate is arranged below the top cover body;
the positive electrode connecting ring is fixedly connected with the positive electrode connecting sheet;
the negative electrode connecting ring is fixedly connected with the negative electrode connecting sheet.
Further, the positive electrode connecting sheet is provided with a first bulge;
the first protrusion is adapted to be inserted into the first mounting hole.
Further, a first annular groove surrounding the first protrusion is formed in the top of the positive electrode connecting sheet.
Further, a plurality of first clamping grooves are formed in the side wall of the first protrusion.
Further, the diameter of the first protrusion is smaller than that of the first mounting hole, and after the first protrusion is inserted into the first mounting hole, the top surface of the first protrusion is lower than that of the first mounting hole.
Further, the negative electrode connecting sheet is provided with a second bulge;
the second protrusion is adapted to be inserted into the second mounting hole.
Further, a second annular groove surrounding the second protrusion is formed in the top of the negative electrode connecting sheet.
Further, a plurality of second clamping grooves are formed in the side wall of the second protrusion.
Further, the diameter of the second protrusion is smaller than that of the second mounting hole, and after the second protrusion is inserted into the second mounting hole, the top surface of the second protrusion is lower than that of the second mounting hole.
Further, the hole walls of the positive electrode connecting ring and the negative electrode connecting ring are provided with a plurality of third clamping grooves.
Further, a plating layer is arranged on the hole wall of the negative electrode connecting ring.
The utility model also provides a battery cell, and the battery cell is assembled by adopting the top cover.
The utility model has the beneficial effects that the utility model provides a top cover and a battery cell, wherein the top cover comprises: the device comprises a top cover body, an anode connecting ring, a cathode connecting ring, a plastic separating plate, an anode connecting sheet and a cathode connecting sheet; the positive electrode connecting ring is fixed on the first mounting hole of the top cover body; the negative electrode connecting ring is fixed on the second mounting hole of the top cover body; the plastic separation plate is arranged below the top cover body; the positive electrode connecting ring is fixedly connected with the positive electrode connecting sheet; the negative electrode connecting ring is fixedly connected with the negative electrode connecting sheet. The positive connecting ring is connected with the positive connecting piece in a brazing mode, the negative connecting ring is connected with the negative connecting piece, and meanwhile, the positive connecting piece and the negative connecting piece can be made of the same material, so that the phenomenon of reverse fixation is avoided.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is an exploded view of a top cover provided by the present utility model.
Fig. 2 is a schematic structural view of the positive electrode connecting sheet provided by the utility model.
Fig. 3 is a schematic structural view of the positive electrode connection ring provided by the present utility model.
In the figure: 110. a top cover body; 111. a positive electrode connection ring; 112. a negative electrode connection ring; 113. a first mounting hole; 114. a second mounting hole; 120. a plastic separating plate; 121. a first plastic ring; 122. a second plastic ring; 130. a positive electrode connecting sheet; 131. a first protrusion; 132. a first clamping groove; 133. a first annular groove; 140. a negative electrode connecting sheet; 150. plating; 160. solder; 170. explosion-proof sheet; 180. an explosion-proof valve protection patch; 190. and a third clamping groove.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
Examples
Referring to fig. 1-3, the present embodiment provides a top cover, which includes: top cover body 110, positive electrode connecting ring 111, negative electrode connecting ring 112, plastic separating plate 120, positive electrode connecting piece 130 and negative electrode connecting piece 140; the positive electrode connection ring 111 is fixed to the first mounting hole 113 of the top cover body 110; the negative electrode connection ring 112 is fixed to the second mounting hole 114 of the top cover body 110; the plastic separation plate 120 is disposed below the top cover body 110; the positive electrode connecting ring 111 is fixedly connected with the positive electrode connecting sheet 130; the negative electrode connection ring 112 is fixedly connected with the negative electrode connection piece 140. The positive connection ring 111 and the positive connection piece 130 are connected by adopting a brazing mode, and the negative connection ring 112 and the negative connection piece 140 are connected, and meanwhile, the positive connection piece 130 and the negative connection piece 140 can be made of the same material, so that the reverse fixation of fashionable dress is avoided.
The top cover body 110 is provided with a fixing hole for fixing the positive electrode connection ring 111 and the negative electrode connection ring 112.
In this embodiment, the positive electrode connection ring 111 and the positive electrode connection piece 130 are fixed by brazing, and the negative electrode connection ring 112 and the negative electrode connection piece 140 are fixed by brazing.
In this embodiment, the positive electrode connecting ring 111 is made of aluminum, the negative electrode connecting ring 112 is made of copper, and the positive electrode connecting piece 130 and the negative electrode connecting piece 140 are made of aluminum.
In this embodiment, the positive electrode connection piece 130 is provided with a first protrusion 131; the first protrusion 131 is adapted to be inserted into the first mounting hole 113. By arranging the plug-in structure, the contact area between the first bulge 131 and the first mounting hole 113 is increased, and the stability of brazing connection is improved.
In this embodiment, a first annular groove 133 surrounding the first protrusion 131 is formed at the top of the positive electrode connection piece 130. A plurality of first clamping grooves 132 are formed in the side wall of the first protrusion 131. The diameter of the first protrusion 131 is smaller than the diameter of the first mounting hole 113, and after the first protrusion 131 is inserted into the first mounting hole 113, the top surface of the first protrusion 131 is lower than the top surface of the first mounting hole 113. By arranging the first annular groove 133, the first clamping groove 132 and the top surface of the first protrusion 131 lower than the top surface of the first mounting hole 113, the solder 160 formed by brazing can be clamped on the first protrusion 131, so that the connection stability is improved.
In this embodiment, the negative electrode connection piece 140 is provided with a second protrusion; the second protrusion is adapted to be inserted into the second mounting hole 114. By providing the plugging structure, the contact area between the second protrusion and the second mounting hole 114 is increased, and the stability of the brazing connection is improved.
In this embodiment, a second annular groove surrounding the second protrusion is formed on the top of the negative electrode connection piece 140. A plurality of second clamping grooves are formed in the side wall of the second bulge. The diameter of the second protrusion is smaller than that of the second mounting hole 114, and after the second protrusion is inserted into the second mounting hole 114, the top surface of the second protrusion is lower than that of the second mounting hole 114. Through setting up second annular groove, second draw-in groove and the bellied top surface of second is less than the top surface of second mounting hole 114 for the solder 160 that the braze joint formed can the joint on the second is protruding, thereby improves the steadiness of connection.
In this embodiment, the hole walls of the positive electrode connection ring 111 and the negative electrode connection ring 112 are provided with a plurality of third clamping grooves 190. By providing the third clamping groove 190, the solder 160 formed by brazing can be clamped on the wall of the second mounting hole 114, so that the connection stability is improved.
In this embodiment, the hole wall of the negative electrode connection ring 112 is provided with a plating layer 150. The plating 150 is nickel plating or a special plating 150 using a low temperature brazing process without nickel plating.
In this embodiment, the top cover further includes a first plastic ring 121 and a second plastic ring 122, the positive electrode connection ring 111 is fixed on the top cover body 110 through the first plastic ring 121, and the negative electrode connection ring 112 is fixed on the top cover body 110 through the second plastic ring 122.
In this embodiment, the top cover further includes an explosion-proof sheet 170 and an explosion-proof valve protection patch 180, the explosion-proof sheet 170 is disposed in the plastic separation plate 120, the explosion-proof valve protection patch 180 is disposed above the explosion-proof sheet 170, and an opening suitable for the taking out of the explosion-proof valve protection patch 180 is opened at a position corresponding to the explosion-proof valve protection patch 180 by the top cover plate ladder.
The embodiment of the utility model also provides a battery cell, and the battery cell is assembled by adopting the top cover. The positive connection ring 111 and the positive connection piece 130 are connected by adopting a brazing mode, and the negative connection ring 112 and the negative connection piece 140 are connected, and meanwhile, the positive connection piece 130 and the negative connection piece 140 can be made of the same material, so that the reverse fixation of fashionable dress is avoided.
In summary, the present utility model provides a top cover and a battery cell, wherein the top cover includes: top cover body 110, positive electrode connecting ring 111, negative electrode connecting ring 112, plastic separating plate 120, positive electrode connecting piece 130 and negative electrode connecting piece 140; the positive electrode connection ring 111 is fixed to the first mounting hole 113 of the top cover body 110; the negative electrode connection ring 112 is fixed to the second mounting hole 114 of the top cover body 110; the plastic separation plate 120 is disposed below the top cover body 110; the positive electrode connecting ring 111 is fixedly connected with the positive electrode connecting sheet 130 through brazing; the negative electrode connection ring 112 is fixedly connected with the negative electrode connection piece 140 by brazing. The positive connection ring 111 and the positive connection piece 130 are connected by adopting a brazing mode, and the negative connection ring 112 and the negative connection piece 140 are connected, and meanwhile, the positive connection piece 130 and the negative connection piece 140 can be made of the same material, so that the reverse fixation of fashionable dress is avoided.
The components (components not illustrating specific structures) selected in the application are all common standard components or components known to those skilled in the art, and the structures and principles of the components are all known to those skilled in the art through technical manuals or through routine experimental methods. Moreover, the software programs referred to in the present application are all prior art, and the present application does not relate to any improvement of the software programs.
In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (12)
1. A top cap, comprising:
the device comprises a top cover body, an anode connecting ring, a cathode connecting ring, a plastic separating plate, an anode connecting sheet and a cathode connecting sheet;
the positive electrode connecting ring is fixed on the first mounting hole of the top cover body;
the negative electrode connecting ring is fixed on the second mounting hole of the top cover body;
the plastic separation plate is arranged below the top cover body;
the positive electrode connecting ring is fixedly connected with the positive electrode connecting sheet;
the negative electrode connecting ring is fixedly connected with the negative electrode connecting sheet.
2. The top cover of claim 1, wherein the top cover,
the positive electrode connecting sheet is provided with a first bulge;
the first protrusion is adapted to be inserted into the first mounting hole.
3. The overcap of claim 2, wherein the cap comprises a top cap,
the top of the positive electrode connecting sheet is provided with a first annular groove encircling the first bulge.
4. The overcap of claim 2, wherein the cap comprises a top cap,
a plurality of first clamping grooves are formed in the side wall of the first bulge.
5. The overcap of claim 2, wherein the cap comprises a top cap,
the diameter of the first bulge is smaller than that of the first mounting hole, and after the first bulge is inserted into the first mounting hole, the top surface of the first bulge is lower than that of the first mounting hole.
6. The top cover of claim 1, wherein the top cover,
the negative electrode connecting sheet is provided with a second bulge;
the second protrusion is adapted to be inserted into the second mounting hole.
7. The overcap of claim 6, wherein the cap comprises a top cap,
the top of the negative electrode connecting sheet is provided with a second annular groove encircling the second bulge.
8. The overcap of claim 6, wherein the cap comprises a top cap,
a plurality of second clamping grooves are formed in the side wall of the second bulge.
9. The overcap of claim 6, wherein the cap comprises a top cap,
the diameter of the second bulge is smaller than that of the second mounting hole, and after the second bulge is inserted into the second mounting hole, the top surface of the second bulge is lower than that of the second mounting hole.
10. The top cover of claim 1, wherein the top cover,
and the hole walls of the positive electrode connecting ring and the negative electrode connecting ring are provided with a plurality of third clamping grooves.
11. The top cover of claim 1, wherein the top cover,
and the hole wall of the negative electrode connecting ring is provided with a plating layer.
12. A cell comprising the cap of any one of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320105112.8U CN219246804U (en) | 2023-02-03 | 2023-02-03 | Top cover and battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320105112.8U CN219246804U (en) | 2023-02-03 | 2023-02-03 | Top cover and battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219246804U true CN219246804U (en) | 2023-06-23 |
Family
ID=86809154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320105112.8U Active CN219246804U (en) | 2023-02-03 | 2023-02-03 | Top cover and battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219246804U (en) |
-
2023
- 2023-02-03 CN CN202320105112.8U patent/CN219246804U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |