CN212323091U - An aluminum shell lithium battery cover plate and a lithium battery using the same - Google Patents
An aluminum shell lithium battery cover plate and a lithium battery using the same Download PDFInfo
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- CN212323091U CN212323091U CN202021454565.4U CN202021454565U CN212323091U CN 212323091 U CN212323091 U CN 212323091U CN 202021454565 U CN202021454565 U CN 202021454565U CN 212323091 U CN212323091 U CN 212323091U
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- cover plate
- negative electrode
- lithium battery
- conductive handle
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Connection Of Batteries Or Terminals (AREA)
Abstract
本实用新型涉及一种铝壳锂电池盖板及使用该盖板的锂电池，一种铝壳锂电池盖板，包括光盖板，光盖板的一端设置有负极柱、负极引出孔、绝缘件和凹槽，光盖板的另一端冲压出一个凸台设置为正极柱，正极柱的下方焊接有正极导电柄，绝缘件通过注塑工艺充填到负极引出孔的上表面、孔内壁及下表面，绝缘件设置有凸起结构，凸起结构卡在凹槽内，负极柱的下方焊接有负极导电柄，负极柱依次穿过绝缘件和负极导电柄并铆接在负极导电柄的一侧，负极柱通过对铆接面进行激光焊与负极导电柄焊接在一起；本实用新型使用该盖板的锂电池具有结构及加工工艺简单、成本低、生产效率高、内部温度分布均匀、装配结构简单高效的优点。
The utility model relates to an aluminum shell lithium battery cover plate and a lithium battery using the cover plate, an aluminum shell lithium battery cover plate, comprising a light cover plate, one end of the light cover plate is provided with a negative pole, a negative lead-out hole, an insulating A boss is punched out from the other end of the light cover plate to form a positive pole, and a positive conductive handle is welded under the positive pole. , the insulating member is provided with a protruding structure, the protruding structure is stuck in the groove, the negative electrode column is welded with a negative electrode conductive handle, the negative electrode column passes through the insulating member and the negative electrode conductive handle in turn and is riveted on one side of the negative electrode conductive handle, the negative electrode The column is welded with the negative electrode conductive handle by laser welding the riveting surface; the lithium battery using the cover plate of the utility model has the advantages of simple structure and processing technology, low cost, high production efficiency, uniform internal temperature distribution, and simple and efficient assembly structure. advantage.
Description
Technical Field
The utility model relates to a square aluminum hull lithium cell technical field, concretely relates to aluminum hull lithium cell apron and use lithium cell of this apron.
Background
The lithium ion battery has the advantages of light weight, large energy storage, large power, no pollution, long service life, small self-discharge coefficient, wide temperature application range and the like, is gradually favored by people, and gradually replaces other traditional batteries in the field of energy storage and power batteries.
With the rapid development of the lithium battery industry, the cost of the battery becomes more and more a key factor for the development of the battery industry, the cover plate sealing of the traditional structure is generally realized by a sealing ring and a riveting process or a sealing ring and an injection molding process, and the structure is complex and the cost is high; the positive and negative electrodes of the traditional aluminum-shell battery are led out at one end, so that the heat generation at the leading-out ends of the positive and negative electrodes is concentrated, the temperature of the battery is uneven, and the safety and the service life of the battery are seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an aluminum shell lithium battery cover plate, which is used for a lithium battery to solve the problems; the utility model aims at providing a structure and processing technology are simple, with low costs, production efficiency is high, inside temperature distribution is even, assembly structure is simple efficient lithium cell still.
The purpose of the utility model is realized like this: the utility model provides an aluminum hull lithium cell apron, includes the light apron, the one end of light apron is provided with negative pole post, negative pole and draws forth hole, insulating part and recess, the other end punching press of light apron goes out a boss and sets up to the positive pole, the below welding of positive pole has anodal electrically conductive handle, the insulating part fill through the technology of moulding plastics the negative pole draws forth upper surface, downthehole wall and the lower surface in hole, the insulating part be provided with protruding structure, protruding structure card in the recess in, the below welding of negative pole post has the electrically conductive handle of negative pole, the negative pole post pass insulating part and the electrically conductive handle of negative pole and the riveting is in one side of the electrically conductive handle of negative pole in proper order, the negative pole post through carry out laser welding to the riveting face with the electrically conductive handle welding of negative pole together.
The structure of the negative pole column is a flat head hollow rivet structure.
A lithium battery comprises an aluminum shell, a roll core arranged in the aluminum shell, and a cover plate arranged at the opening of the aluminum shell, the cover plate comprises a light cover plate, one end of the light cover plate is provided with a negative pole column, a negative pole leading-out hole, an insulating part and a groove, a boss is punched at the other end of the light cover plate to be set as a positive pole, a positive conductive handle is welded below the positive pole, the insulating piece is filled on the upper surface, the inner wall and the lower surface of the negative electrode lead-out hole through an injection molding process, the insulating part is provided with a convex structure which is clamped in the groove, a negative conductive handle is welded below the negative pole column, the cathode pole sequentially penetrates through the insulating part and the cathode conductive handle and is riveted on one side of the cathode conductive handle, the negative pole column is welded with the negative pole conductive handle together by laser welding of a riveting surface.
Roll up core for full utmost point ear structure, the one end of rolling up the core is provided with the copper foil and leaves white, the other end of rolling up the core is provided with the aluminium foil and leaves white, the outside that the copper foil left white is pre-welded with the copper screening glass, two the copper foil of rolling up the core leaves white and the aluminium foil leaves white corresponds to pile up together, two the core passes through the sticky tape and fixes together, forms the core group, be formed with the negative pole recess between two copper foil leaves of core group, be formed with the positive pole recess between two aluminium foils of core group leave white.
The negative conductive handle of the cover plate is inserted into the negative groove of the winding core group, and the positive conductive handle of the cover plate is inserted into the positive groove of the winding core group.
The aluminum foil of the winding core is welded on the anode conductive handle of the cover plate.
The surface of the winding core group is coated with a mylar film, and the mylar film is fixed on the winding core group in a hot melting mode.
The aluminum shell is connected with the cover plate in a sealing mode through laser welding.
The utility model has the advantages that: the negative pole column of the aluminum shell lithium battery cover plate of the utility model is in a flat head hollow rivet structure, can use a standard structural member, and has a simple structure; the utility model relates to an anodal post of aluminium shell lithium cell apron directly punches out the boss on the light apron, has saved traditional anodal structure, simple structure, and the overall cost has the advantage; the utility model relates to a positive negative pole of lithium cell is drawn forth at the both ends of rolling up the core, has solved the more concentrated condition of generating heat when positive negative pole one end is drawn forth, is favorable to the safety and the life-span of battery; the utility model discloses the lithium cell that uses this apron has structure and processing technology simple, with low costs, production efficiency is high, inside temperature distribution is even, assembly structure is simple efficient advantage.
Drawings
Fig. 1 is a schematic structural diagram of an aluminum-shell lithium battery cover plate of the present invention.
Fig. 2 is the schematic diagram of the lithium battery structure roll core of the utility model.
Fig. 3 is a schematic view of the lithium battery winding core set of the present invention.
Fig. 4 is a schematic view of the cover plate assembly of the lithium battery of the present invention.
Fig. 5 is a schematic diagram of the welding of the cover plate and the winding core assembly of the lithium battery of the present invention.
Fig. 6 is a schematic diagram of a mylar film wrapped in a lithium battery of the present invention.
Fig. 7 is a schematic diagram of the aluminum shell and cover plate of the lithium battery of the present invention.
In the figure: 1. 1-1 part of a winding core, 1-2 parts of copper foil blank, 1-3 parts of aluminum foil blank, 1-4 parts of a copper protection sheet, 2 parts of an aluminum protection sheet, 2-1 parts of a winding core group, 3 parts of an adhesive tape, 3-1 parts of a cover plate, 3-2 parts of a light cover plate, 3-3 parts of a negative pole column, 3-4 parts of an insulating part, 3-5 parts of a protruding structure, 3-6 parts of a groove, 3-7 parts of a negative pole conductive handle, 3-8 parts of laser welding, 3-9 parts of a positive pole column, 3-10 parts of a positive pole conductive handle, 4-1 parts of a negative pole leading-out hole, 4-2 parts of a negative pole groove, 5-1 parts of a positive pole groove, 5-2 parts of ultrasonic welding.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
The aluminum-shell lithium battery cover plate shown in figure 1 comprises a light cover plate 3-1, wherein one end of the light cover plate 3-1 is provided with a negative pole column 3-2, a negative pole leading-out hole 3-10, an insulating part 3-3 and a groove 3-5, a boss is punched at the other end of the light cover plate 3-1 and is set as a positive pole column 3-2, a positive pole conductive handle 3-9 is welded below the positive pole column 3-2, the insulating part 3-3 is filled on the upper surface, the inner wall and the lower surface of the negative pole leading-out hole 3-10 through an injection molding process, the insulating part 3-3 is provided with a convex structure 3-4, the convex structure 3-4 is clamped in the groove 3-5, and a negative pole conductive handle 3-6 is welded below the negative pole column 3-2, the cathode post 3-2 sequentially penetrates through the insulating part 3-3 and the cathode conductive handle 3-6 and is riveted on one side of the cathode conductive handle 3-6, and the cathode post 3-2 is welded with the cathode conductive handle 3-6 by laser welding 3-7 of a riveting surface.
For better effect, the structure of the negative pole column 3-2 is a flat head hollow rivet structure.
In the aluminum shell lithium battery cover plate of the utility model, the convex structures 3-4 of the insulating parts 3-3 are clamped in the grooves 3-5 of the light cover plate 3-1 to play a role in rotation stopping, and the insulating parts 3-3 are filled on the upper surface, the inner wall and the lower surface of the negative electrode lead-out hole 3-10 through an injection molding process to realize the insulation of the inner wall of the lead-out hole; the cathode column 3-2 of the aluminum shell lithium battery cover plate of the utility model is in a flat head hollow rivet structure, which can use a standard structural member and has simple structure; the utility model discloses an aluminum hull lithium cell cover plate, its positive post 3-8 directly punches out the boss on light apron 3-1, has saved traditional positive pole structure, simple structure, and the overall cost has the advantage; the utility model discloses the lithium cell that uses this apron has structure and processing technology simple, with low costs, production efficiency is high, inside temperature distribution is even, assembly structure is simple efficient advantage.
Example 2
The lithium battery shown in the figures 1-7 comprises an aluminum shell 7, a roll core 1 arranged in the aluminum shell 7 and a cover plate 3 arranged at an opening of the aluminum shell 1, wherein the cover plate 3 comprises a light cover plate 3-1, one end of the light cover plate 3-1 is provided with a negative pole column 3-2, a negative pole lead-out hole 3-10, an insulating part 3-3 and a groove 3-5, the other end of the light cover plate 3-1 is punched with a boss which is set as a positive pole column 3-8, a positive pole conductive handle 3-9 is welded below the positive pole column 3-8, the insulating part 3-3 is filled on the upper surface, the inner wall of the hole and the lower surface of the negative pole lead-out hole 3-10 through an injection molding process, the insulating part 3-3 is provided with a convex structure 3-4, and the convex structure 3-4 is clamped in the groove 3-5, the cathode conductive handle 3-6 is welded below the cathode post 3-2, the cathode post 3-2 sequentially penetrates through the insulating part 3-3 and the cathode conductive handle 3-6 and is riveted on one side of the cathode conductive handle 3-6, and the cathode post 3-2 is welded with the cathode conductive handle 3-6 through laser welding 3-7 performed on a riveting surface.
For better effect, core 1 roll up and be full utmost point ear structure, core 1's one end is provided with copper foil margin 1-1, core 1's the other end is provided with the aluminium foil margin 1-2, the outside of copper foil margin 1-1 is pre-welded with copper protection sheet 1-3, the outside of aluminium foil margin 1-2 is pre-welded with aluminium protection sheet 1-4, two core 1's copper foil margin 1-1 and aluminium foil margin 1-2 correspond to pile up together, two core 1 pass through sticky tape 2-1 and fix together, form core group 2, be formed with negative pole recess 4-1 between two copper foil margins 1-1 of core group 2, be formed with positive pole recess 4-2 between two aluminium foil margins 1-2 of core group 2.
For better effect, the negative conductive handle 3-6 of the cover plate 3 is inserted into the negative groove 4-1 of the winding core group 2, and the positive conductive handle 3-9 of the cover plate 3 is inserted into the positive groove 4-2 of the winding core group 2.
For better effect, the copper foil of the winding core 1 is subjected to ultrasonic welding 1-1 and 5-1 on the negative electrode conductive handle 3-6 of the cover plate 3, and the aluminum foil of the winding core 1 is subjected to ultrasonic welding 1-2 and 5-2 on the positive electrode conductive handle 3-9 of the cover plate 3.
For better effect, the surface of the winding core group 2 is coated with the mylar film 6, the mylar film 6 is fixed on the winding core group 2 in a hot melting 6-1 mode, and the winding core group 2 is arranged in the aluminum shell 7.
For better effect, the aluminum shell 7 is hermetically connected with the cover plate 3 through laser welding 7-1.
The utility model relates to an aluminum shell lithium battery cover plate 3 adopted by a lithium battery, wherein a convex structure 3-4 of an insulating part 3-3 is clamped in a groove 3-5 of a light cover plate 3-1 to play a role of rotation stopping, and the insulating part 3-3 is filled on the upper surface, the inner wall and the lower surface of a negative lead-out hole 3-10 through an injection molding process to realize the insulation of the inner wall of the lead-out hole; the utility model relates to an aluminum shell lithium battery cover plate 3 adopted by a lithium battery, the cathode pole 3-2 of which is a flat head hollow rivet structure, and can use a standard structural member with simple structure; the utility model relates to an aluminum shell lithium battery cover plate 3 adopted by a lithium battery, wherein a boss is directly punched on a light cover plate 3-1 by a positive pole column 3-8, so that the traditional positive pole structure is omitted, the structure is simple, and the overall cost has advantages; the utility model relates to a positive negative pole of lithium cell is drawn forth at the both ends of rolling up core 1, has solved the more concentrated condition of generating heat when positive negative pole one end is drawn forth, is favorable to the safety and the life-span of battery; the utility model discloses the lithium cell that uses this apron has structure and processing technology simple, with low costs, production efficiency is high, inside temperature distribution is even, assembly structure is simple efficient advantage.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021454565.4U CN212323091U (en) | 2020-07-22 | 2020-07-22 | An aluminum shell lithium battery cover plate and a lithium battery using the same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021454565.4U CN212323091U (en) | 2020-07-22 | 2020-07-22 | An aluminum shell lithium battery cover plate and a lithium battery using the same |
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| CN212323091U true CN212323091U (en) | 2021-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824597A (en) * | 2022-05-13 | 2022-07-29 | 深圳市科达利实业股份有限公司 | Battery top cap and battery |
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2020
- 2020-07-22 CN CN202021454565.4U patent/CN212323091U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824597A (en) * | 2022-05-13 | 2022-07-29 | 深圳市科达利实业股份有限公司 | Battery top cap and battery |
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