CN220420818U - Low-voltage auxiliary lithium battery structure - Google Patents
Low-voltage auxiliary lithium battery structure Download PDFInfo
- Publication number
- CN220420818U CN220420818U CN202320484853.1U CN202320484853U CN220420818U CN 220420818 U CN220420818 U CN 220420818U CN 202320484853 U CN202320484853 U CN 202320484853U CN 220420818 U CN220420818 U CN 220420818U
- Authority
- CN
- China
- Prior art keywords
- electrode tab
- positive electrode
- negative electrode
- tab
- lithium battery
- Prior art date
- Legal status (The legal status 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 status listed.)
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical group [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 239000011888 foil Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract 1
- 229910001416 lithium ion Inorganic materials 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
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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
-
- 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
Abstract
The utility model provides a structure for a low-voltage auxiliary lithium battery. Belonging to the technical field of low-voltage starting auxiliary lithium batteries. The method mainly solves the problems of complex process, increased weight and increased cost of the existing low-voltage auxiliary lithium battery due to the adoption of anode pin metal and cathode pin metal. The main characteristics of the device are as follows: the lithium ion battery comprises a top cover, a winding core and an aluminum shell, wherein the top cover comprises a current collector, and the winding core comprises a winding core body, a negative electrode tab and a positive electrode tab; the negative electrode tab and the positive electrode tab are of a top tab outlet structure; the current collector is connected with the negative electrode lug and the positive electrode lug through laser welding. The utility model has the characteristics of omitting the anode pin and the cathode pin of the top cover, omitting more metal foil materials and reducing the weight of the whole battery, and is mainly used for 12V/24V/48V square aluminum shell lithium batteries.
Description
Technical Field
The utility model belongs to the technical field of low-voltage starting auxiliary lithium batteries, and particularly relates to a low-voltage auxiliary lithium battery structure.
Background
The new energy lithium battery can be roughly divided into a power battery, an energy storage battery and an auxiliary battery according to the application, wherein the former two are relatively hot in the current industry and are products of hundreds of flowers in the industry. While auxiliary batteries are mainly used in auxiliary functions of automobiles, such as ignition starting, and power supply of other electronic devices in the automobiles. The importance degree is self-evident, low voltage and high current are low-voltage alternative names, and all enterprises are all lugs for meeting the requirement that the high-current charge-discharge battery cell structure is provided with metal pins. The structural design has the defects that the weight of the whole battery cell is influenced, the cost is increased greatly, the materials for the metal of the anode pin and the cathode pin are increased, the process is complicated, the cost is increased, the full-tab winding core structure is wound, and the weight of the battery cell is increased greatly by the metal foil.
Disclosure of Invention
The utility model aims at the defects and provides a low-voltage auxiliary lithium battery structure which has the advantages of light weight, low cost and the like.
The technical scheme of the utility model is as follows: the low-voltage auxiliary lithium battery structure is used for a 12V/24V/48V square aluminum shell lithium battery and comprises a top cover, a winding core and an aluminum shell, wherein the top cover comprises a current collector, and the winding core comprises a winding core body, a negative electrode tab and a positive electrode tab; the method is characterized in that: the negative electrode tab and the positive electrode tab are of a top tab outlet structure; the current collector is connected with the negative electrode lug and the positive electrode lug through laser welding.
The current collector in the technical solution of the utility model is a negative electrode post and a positive electrode post; the negative electrode post and the positive electrode post are respectively connected with the negative electrode tab and the positive electrode tab through laser welding.
The negative electrode tab and the positive electrode tab in the technical scheme of the utility model are of multi-tab structures after die cutting, and replace the traditional multi-tab structures.
According to the technical scheme, the heights of steps on two sides of plastic under the top cover are different.
The structure of the corresponding part of the lower plastic and the explosion-proof valve in the technical solution of the utility model is a hollowed design.
According to the technical scheme, the negative electrode tab and the positive electrode tab of the winding core extend out from the top of the winding core body, and are arranged on the same side.
The utility model has the advantages that:
1. the utility model omits the positive and negative pins of the top cover, reduces the overall weight of the battery and improves the energy density;
2. according to the utility model, the electrode lug is directly connected with the top cover electrode post through laser welding, so that the traditional adapter plate is omitted, and the cost of the battery cell is reduced;
3. the utility model is a top tab structure, and also a multi-tab mechanism saves more metal foil for the battery, thereby reducing the weight of the whole battery;
4. the explosion-proof valve corresponding to the plastic structure below the top cover in the battery structure is of a hollowed-out structure, so that pressure can be relieved more quickly when the battery is abused.
Drawings
FIG. 1 is an assembled schematic view of the present utility model.
Fig. 2 is a schematic diagram of the welding of the present utility model.
In the figure: 1-top cover; 11-a top cap negative pole post; 12-a top cap positive pole; 2-winding the core; 21-a winding core body; 22-negative electrode lugs; 23-positive electrode lugs; 3-aluminum shell.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
As shown in fig. 1 and 2, an embodiment of the present utility model for a low-voltage auxiliary lithium battery structure is composed of a top cover 1, a winding core 2 and an aluminum case 3 for a 12V/24V/48V square aluminum case lithium battery. The top cover 1 includes a current collector, which is a negative electrode post 11 and a positive electrode post 12. The winding core 2 includes a winding core body 21, a negative electrode tab 22, and a positive electrode tab 23.
The negative electrode tab 22 and the positive electrode tab 23 are of a top tab structure and extend out from the top of the winding core body 21, and the negative electrode tab 22 and the positive electrode tab 23 are of a multi-tab structure after die cutting on the same side, so that the multi-tab structure is replaced by the traditional multi-tab structure. The negative electrode pole 11 and the positive electrode pole 12 are respectively connected with the negative electrode pole lug 22 and the positive electrode pole lug 23 through laser welding, so that a traditional adapter piece is omitted.
The step heights on two sides of the plastic structure under the top cover 1 are different, the lower part is convenient for welding the pole lug and the top cover pole post, and the higher part is used for avoiding welding slag from splashing out of the plastic under the pole lug welding. The corresponding part of the lower plastic and the explosion-proof valve is completely a hollowed-out structure.
Embodiments are described below:
1. the winding core 2 is formed into a multi-lug structure after the lug die cutting is finished in the previous working procedure;
2. the positive electrode lug 23 and the negative electrode lug 22 of the winding core 2 are respectively welded with the positive electrode pole post 12 and the negative electrode pole post 11 on the top cover 1 by laser;
3. and after the laser welding is finished, the winding core 2 is turned over to finish the welding process.
Claims (7)
1. The utility model provides a low pressure auxiliary lithium battery structure for 12V 24V 48V square aluminum hull lithium cell, includes top cap (1), reel core (2) and aluminum hull (3), top cap (1) include the current collector, reel core (2) include reel core body (21), negative pole utmost point ear (22) and anodal utmost point ear (23); the method is characterized in that: the negative electrode tab (22) and the positive electrode tab (23) are of a top tab structure; the current collector is connected with the negative electrode tab (22) and the positive electrode tab (23) through laser welding.
2. The low voltage auxiliary lithium battery structure according to claim 1, wherein: the current collector is a negative electrode pole (11) and a positive electrode pole (12); the negative electrode pole (11) and the positive electrode pole (12) are respectively connected with the negative electrode pole lug (22) and the positive electrode pole lug (23) through laser welding.
3. The low voltage auxiliary lithium battery structure according to claim 2, wherein: the negative electrode tab (22) and the positive electrode tab (23) are of multi-tab structures.
4. A low voltage auxiliary lithium battery structure according to claim 1, 2 or 3, wherein: the steps on the two sides of the plastic under the top cover (1) are different in height.
5. The low voltage auxiliary lithium battery structure according to claim 4, wherein: the structure of the corresponding part of the lower plastic and the explosion-proof valve is a hollowed design.
6. A low voltage auxiliary lithium battery structure according to any of claims 1-3, 5, wherein: the negative electrode tab (22) and the positive electrode tab (23) of the winding core (2) extend out from the top of the winding core body (21), and the negative electrode tab (22) and the positive electrode tab (23) are arranged on the same side.
7. The low voltage auxiliary lithium battery structure according to claim 4, wherein: the negative electrode tab (22) and the positive electrode tab (23) of the winding core (2) extend out from the top of the winding core body (21), and the negative electrode tab (22) and the positive electrode tab (23) are arranged on the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320484853.1U CN220420818U (en) | 2023-03-14 | 2023-03-14 | Low-voltage auxiliary lithium battery structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320484853.1U CN220420818U (en) | 2023-03-14 | 2023-03-14 | Low-voltage auxiliary lithium battery structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220420818U true CN220420818U (en) | 2024-01-30 |
Family
ID=89660672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320484853.1U Active CN220420818U (en) | 2023-03-14 | 2023-03-14 | Low-voltage auxiliary lithium battery structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220420818U (en) |
-
2023
- 2023-03-14 CN CN202320484853.1U patent/CN220420818U/en active Active
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| GR01 | Patent grant |