CN204167397U - The negative lug of disposable lithium-battery and and lithium cathode sheet between syndeton - Google Patents
The negative lug of disposable lithium-battery and and lithium cathode sheet between syndeton Download PDFInfo
- Publication number
- CN204167397U CN204167397U CN201420664073.6U CN201420664073U CN204167397U CN 204167397 U CN204167397 U CN 204167397U CN 201420664073 U CN201420664073 U CN 201420664073U CN 204167397 U CN204167397 U CN 204167397U
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- Prior art keywords
- depressed part
- lithium
- negative lug
- cathode sheet
- sheet
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- Withdrawn - After Issue
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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 discloses the syndeton between a kind of negative lug of disposable lithium-battery and lithium cathode sheet, wherein negative lug comprises a strip nickel sheet, and in strip nickel sheet, even punching press has multiple depressed part, and depressed part center is provided with through hole.Described syndeton comprises above-mentioned negative lug and lithium cathode sheet, lithium cathode sheet and negative lug are after external force extrudes mutually, the first surface of lithium cathode sheet and the first surface of strip nickel sheet are close to mutually, form the coverage rate that a sectional area is greater than through hole in the bottom surface of depressed part after portion of material simultaneously in lithium cathode sheet pushes through through hole, its advantage is that the contact between lithium cathode sheet and negative lug is reliable, be not easy to throw off, ensure that the discharge performance of lithium-manganese cell, simultaneously owing to forming depressed part and through hole after negative lug punching press, substantially increase the contact area between negative lug and lithium cathode sheet, the discharge performance comparing traditional lithium-manganese cell increases.
Description
Technical field
The utility model relates to a kind of field of lithium, particularly relate to a kind of disposable lithium-battery negative lug and and lithium cathode sheet between syndeton.
Background technology
Coiling lithium manganese cell is by lithium cathode sheet, positive plate and be configured in two interelectrode micro-pore septums and form, its inside battery is wound into " film " shape structure on the whole, be filled with electrolyte at inside battery, electrolyte is injected into inside battery in the fluid injection mode vacuumized.The reaction principle of battery: full name lithium-manganese dioxide battery (Lithium-manganese dioxide, Li-MnO2).In primary cell, using lithium metal as anode, manganese dioxide is as negative electrode, and in primary cell, anode is negative pole, and electronics flows to positive pole by negative pole, and electric current flows to negative pole by positive pole; Be connected with positive pole at electrolytic cell Anodic, what anode occurred oxidation reaction is anion in solution.In lithium-manganese cell structure as depicted in figs. 1 and 2, include micro-pore septum 9, positive plate 10, lithium cathode sheet 5, negative lug 7 and box hat 8, negative lug 7 is connected to lithium cathode sheet 5 and box hat 8 negative terminal) bottom between, negative lug 7 with bottom box hat 8 between be connected by welding manner, connected mode between negative lug 7 and lithium cathode sheet 5 is: negative lug 7 is directly attached in lithium cathode sheet 5, then is fixed with adhesive tape.There are the following problems for such syndeton: 1, the Cohesion reliability of adhesive tape is not high, there is the risk of negative lug from lithium cathode sheet is de-, or there is part contact between negative lug and lithium cathode sheet, the situation that part departs from; There will be the problem that cell discharge performance is bad like this, risk is to be in vibration processes when battery further, negative lug finally can be caused equally to depart from lithium cathode sheet completely, cause the problems such as battery cannot discharge.Even if 2 when negative lug and lithium cathode sheet can completely reliable contacts, contact area between negative lug and lithium cathode sheet is still relatively little, its electric conductivity, by impact to a certain extent, makes the discharge performance of traditional lithium-manganese cell be restricted.
Summary of the invention
Technical problem to be solved in the utility model be to provide a kind of energy contact with lithium cathode sheet reliable disposable lithium-battery negative lug and and lithium cathode sheet between syndeton, contact area both this negative lug and syndeton can increase, improves the discharge performance of lithium-manganese cell further.
The utility model solves the problems of the technologies described above adopted technical scheme: the negative lug of disposable lithium-battery, comprises a strip nickel sheet, and in described strip nickel sheet, even punching press has multiple depressed part, and described depressed part center is provided with through hole.
Described depressed part is circular depression, and described through hole is manhole.Strip nickel sheet has this structure, and making has more contact area between itself and lithium cathode sheet, and through hole can pass through for the portion of material in lithium cathode sheet simultaneously.
The diameter of described circular depression is L1, and the height of circular depression is H, and the diameter of manhole is L2,1/4L1< L2<2/3L1,1/10L1<H<1/2L1.The height of depressed part and diameter limit and make this structure have better intensity, keep the reliable of negative lug structure, still can maintain the original state when extruding with lithium cathode sheet under external force.
Described multiple depressed parts are divided into two row's depressed parts along strip nickel sheet length direction, and be respectively first row depressed part and second row depressed part, the depressed part in the depressed part in first row depressed part and second row depressed part is staggered.
The diameter of described circular depression is 0.8 millimeter ~ 1.5 millimeters.
Syndeton between the negative lug of disposable lithium-battery and lithium cathode sheet, comprise negative lug and lithium cathode sheet, described negative lug comprises a strip nickel sheet, in described strip nickel sheet, even punching press has multiple depressed part, described depressed part center is provided with through hole, described lithium cathode sheet and described negative lug are after external force extrudes mutually, the first surface of lithium cathode sheet and the first surface of strip nickel sheet are close to mutually, form the coverage rate that a sectional area is greater than through hole after the portion of material simultaneously in lithium cathode sheet pushes through described through hole in the bottom surface of depressed part.
Material in described lithium cathode sheet fills up described through hole, and described coverage rate is close on the bottom surface of described depressed part.
Described depressed part is circular depression, and described through hole is manhole.
The diameter of described circular depression is L1, the height of circular depression is H, the diameter of manhole is L2,1/4L1< L2<2/3L1,1/10L1<H<1/2L1, the diameter of described circular depression is 0.8 millimeter ~ 1.5 millimeters.
Described multiple depressed parts are divided into two row's depressed parts along strip nickel sheet length direction, and be respectively first row depressed part and second row depressed part, the depressed part in the depressed part in first row depressed part and second row depressed part is staggered.
Compared with prior art, the utility model has the advantages that the hardness due to (lithium cathode sheet) lithium material is less than the hardness of negative lug (nickel material), lithium material is relatively soft, makes it have good ductility.Under external force, lithium cathode sheet and negative lug are after mutually extruding, the first surface of lithium cathode sheet and the first surface of strip nickel sheet are close to mutually, form the coverage rate that a sectional area is greater than through hole in the bottom surface of depressed part after portion of material simultaneously in lithium cathode sheet pushes through through hole, make the contact between lithium cathode sheet and negative lug reliable, be not easy to throw off, ensure that the discharge performance of lithium-manganese cell, simultaneously owing to forming depressed part and through hole after negative lug punching press, substantially increase the contact area between negative lug and lithium cathode sheet, the discharge performance comparing traditional lithium-manganese cell increases.
Accompanying drawing explanation
Fig. 1 is the cutaway view of lithium-manganese cell;
Fig. 2 is C place enlarged drawing in Fig. 1;
Fig. 3 is the structure chart of the utility model negative lug;
Fig. 4 is A place enlarged drawing in Fig. 3;
Fig. 5 is B-B cutaway view in Fig. 4;
Fig. 6 is the cutaway view of the utility model syndeton.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
The negative lug of disposable lithium-battery, comprises a strip nickel sheet 1, and in strip nickel sheet 1, even punching press has multiple depressed part 2, and depressed part 2 center is provided with through hole 3.Disposable lithium-battery can be lithium-manganese cell.
Depressed part 2 is circular depression, and through hole 3 is manhole.
The diameter of circular depression 2 is L1, and the height of circular depression 2 is H, and the diameter of manhole 3 is L2,1/4L1< L2<2/3L1,1/10L1<H<1/2L1.
Multiple depressed part 2 is divided into two row's depressed parts along strip nickel sheet length direction, and be respectively first row depressed part 21 and second row depressed part 21, the depressed part in the depressed part in first row depressed part 21 and second row depressed part 22 is staggered.
The diameter of circular depression 2 is 0.8 millimeter ~ 1.5 millimeters.Preferential value is the value of depressed part 2 diameter L1 is 1.1 millimeters, and the value of through hole 3 diameter L2 is 0.3 millimeter, and the value of the height H of depressed part 2 is 0.25 millimeter.
Syndeton between the negative lug of disposable lithium-battery and lithium cathode sheet 5, comprise negative lug and lithium cathode sheet 5, negative lug comprises a strip nickel sheet 1, in strip nickel sheet 1, even punching press has multiple depressed part 2, depressed part 2 center is provided with through hole 3, lithium cathode sheet 5 and negative lug are after external force extrudes mutually, the first surface 51 of lithium cathode sheet 5 and the first surface 11 of strip nickel sheet 1 are close to mutually, form the coverage rate 6 that a sectional area is greater than through hole 3 after the portion of material simultaneously in lithium cathode sheet 5 pushes through through hole 3 in the bottom surface of depressed part 2.Material in lithium cathode sheet 5 fills up through hole 3, and coverage rate 6 is close on the bottom surface of depressed part 2.
Depressed part 2 is circular depression, and through hole 3 is manhole.
The diameter of circular depression 2 is L1, the height of circular depression 2 is H, the diameter of manhole 3 is L2,1/4L1< L2<2/3L1,1/10L1<H<1/2L1, the diameter of circular depression 2 is 0.8 millimeter ~ 1.5 millimeters.
Multiple depressed part 2 is divided into two row's depressed parts along strip nickel sheet length direction, and be respectively first row depressed part 21 and second row depressed part 22, the depressed part in the depressed part in first row depressed part 21 and second row depressed part 22 is staggered.
Claims (10)
1. the negative lug of disposable lithium-battery, comprises a strip nickel sheet, and it is characterized in that in described strip nickel sheet, even punching press has multiple depressed part, described depressed part center is provided with through hole.
2. the negative lug of a kind of disposable lithium-battery according to claim 1, it is characterized in that described depressed part is circular depression, described through hole is manhole.
3. the negative lug of a kind of disposable lithium-battery according to claim 2, it is characterized in that the diameter of described circular depression is L1, the height of circular depression is H, the diameter of manhole is L2,1/4L1< L2<2/3L1,1/10L1<H<1/2L1.
4. the negative lug of a kind of disposable lithium-battery according to claim 1, it is characterized in that described multiple depressed parts are divided into two row's depressed parts along strip nickel sheet length direction, be respectively first row depressed part and second row depressed part, the depressed part in the depressed part in first row depressed part and second row depressed part is staggered.
5. the negative lug of a kind of disposable lithium-battery according to claim 3, is characterized in that the diameter of described circular depression is 0.8 millimeter ~ 1.5 millimeters.
6. the syndeton between the negative lug of disposable lithium-battery and lithium cathode sheet, comprise negative lug and lithium cathode sheet, described negative lug comprises a strip nickel sheet, it is characterized in that in described strip nickel sheet, even punching press has multiple depressed part, described depressed part center is provided with through hole, described lithium cathode sheet and described negative lug are after external force extrudes mutually, the first surface of lithium cathode sheet and the first surface of strip nickel sheet are close to mutually, form the coverage rate that a sectional area is greater than through hole in the bottom surface of depressed part after portion of material simultaneously in lithium cathode sheet pushes through described through hole.
7. the syndeton between the negative lug of a kind of disposable lithium-battery according to claim 6 and lithium cathode sheet, it is characterized in that the material in described lithium cathode sheet fills up described through hole, described coverage rate is close on the bottom surface of described depressed part.
8. the syndeton between the negative lug of a kind of disposable lithium-battery according to claim 6 and lithium cathode sheet, it is characterized in that described depressed part is circular depression, described through hole is manhole.
9. the syndeton between the negative lug of a kind of disposable lithium-battery according to claim 8 and lithium cathode sheet, it is characterized in that the diameter of described circular depression is L1, the height of circular depression is H, the diameter of manhole is L2,1/4L1< L2<2/3L1,1/10L1<H<1/2L1, the diameter of described circular depression is 0.8 millimeter ~ 1.5 millimeters.
10. the syndeton between the negative lug of a kind of disposable lithium-battery according to claim 6 and lithium cathode sheet, it is characterized in that described multiple depressed parts are divided into two row's depressed parts along strip nickel sheet length direction, be respectively first row depressed part and second row depressed part, the depressed part in the depressed part in first row depressed part and second row depressed part is staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664073.6U CN204167397U (en) | 2014-11-07 | 2014-11-07 | The negative lug of disposable lithium-battery and and lithium cathode sheet between syndeton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664073.6U CN204167397U (en) | 2014-11-07 | 2014-11-07 | The negative lug of disposable lithium-battery and and lithium cathode sheet between syndeton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204167397U true CN204167397U (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420664073.6U Withdrawn - After Issue CN204167397U (en) | 2014-11-07 | 2014-11-07 | The negative lug of disposable lithium-battery and and lithium cathode sheet between syndeton |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204167397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347841A (en) * | 2014-11-07 | 2015-02-11 | 宁波超霸能源有限公司 | Negative electrode tab of primary lithium battery and connecting structure between negative electrode tab and lithium negative electrode plate |
| CN116526083A (en) * | 2023-07-03 | 2023-08-01 | 宁德新能源科技有限公司 | Pole piece assembly, battery core and power utilization device |
-
2014
- 2014-11-07 CN CN201420664073.6U patent/CN204167397U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347841A (en) * | 2014-11-07 | 2015-02-11 | 宁波超霸能源有限公司 | Negative electrode tab of primary lithium battery and connecting structure between negative electrode tab and lithium negative electrode plate |
| CN116526083A (en) * | 2023-07-03 | 2023-08-01 | 宁德新能源科技有限公司 | Pole piece assembly, battery core and power utilization device |
| CN116526083B (en) * | 2023-07-03 | 2024-03-12 | 宁德新能源科技有限公司 | Pole piece assembly, battery core and power utilization device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150218 Effective date of abandoning: 20160914 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150218 Effective date of abandoning: 20160914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |