CN211480179U - Electrode lug structure of lithium ion battery - Google Patents
Electrode lug structure of lithium ion battery Download PDFInfo
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- CN211480179U CN211480179U CN201921992826.5U CN201921992826U CN211480179U CN 211480179 U CN211480179 U CN 211480179U CN 201921992826 U CN201921992826 U CN 201921992826U CN 211480179 U CN211480179 U CN 211480179U
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- utmost point
- ion battery
- lithium ion
- auricle
- pole piece
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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 and provides a lithium ion battery electrode lug structure, this lithium ion battery electrode lug structure's simple structure, intensity height, low in production cost have improved the intensity of utmost point ear, guarantee that utmost point ear can not damage in follow-up coiling, annotate the liquid, detain operations such as limit. The utility model discloses a rectangular pole piece foil, last utmost point ear piece, utmost point auricle down, rectangular pole piece foil's head with the afterbody of going up utmost point auricle links to each other, the head of going up utmost point auricle with the afterbody of utmost point auricle links to each other down, just rectangular pole piece foil go up utmost point auricle down utmost point ear piece integrated into one piece, rectangular pole piece foil with go up and have the kink between the utmost point ear piece, the head clamp of utmost point auricle down is in kink department. The utility model discloses be applied to the technical field who makes lithium ion battery electrode lug structure.
Description
Technical Field
The utility model relates to a lithium ion battery electrode lug structure.
Background
Chinese patent publication No. CN104332647B discloses a pole piece for producing a lithium-ion button cell, and also discloses a lithium-ion battery electrode lead-out structure, and as shown in fig. 9, 10 and 11 of the above patent documents, there are two methods for manufacturing the lithium-ion battery electrode lead-out structure: 1. directly using the foil material per se; 2. and welding a tab. However, since the foil is very thin, generally about 0.01 mm, and the width of the button cell pole piece is relatively narrow, generally about 2-4 mm, the button cell pole piece is easily broken in the post-processing process by directly using the foil or externally welding, which results in unreliable produced cells.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a lithium ion battery electrode lug structure, this lithium ion battery electrode lug structure's simple structure, intensity height, low in production cost can improve the intensity of utmost point ear, guarantee that utmost point ear can not damage in follow-up coiling, annotate liquid, operations such as knot limit.
The utility model adopts the technical proposal that: the utility model provides a lithium ion battery electrode lug structure includes rectangular pole piece foil, goes up utmost point ear piece, utmost point auricle down, the head of rectangular pole piece foil with the afterbody of going up utmost point auricle links to each other, the head of going up utmost point auricle with the afterbody of utmost point auricle down links to each other, just rectangular pole piece foil go up utmost point auricle down utmost point ear piece integrated into one piece, rectangular pole piece foil with go up and have the kink between the utmost point auricle, the head clamp of utmost point auricle down is in kink department.
Further, the strip-shaped pole piece foil and the upper pole lug are in a 90-degree bending state, the head of the lower pole lug is provided with a 45-degree oblique angle, and the upper pole lug and the lower pole lug are overlapped.
Further, the electrode tab structure of the lithium ion battery further comprises two pieces of adhesive paper which are adhered to each other, and the bent part is located in the two pieces of adhesive paper.
The utility model has the advantages that: because the utility model discloses a rectangular pole piece foil, last utmost point ear piece, utmost point auricle down, rectangular pole piece foil's head with the afterbody of going up utmost point auricle links to each other, the head of going up utmost point auricle with the afterbody of utmost point auricle down links to each other, just rectangular pole piece foil go up utmost point auricle down utmost point ear piece integrated into one piece, rectangular pole piece foil with go up and have the kink between the utmost point ear piece, the head of utmost point auricle down presss from both sides kink department to through bending into shaping on a rectangular pole piece foil, it is easier to operate like this, guarantees again simultaneously that the foil has sufficient intensity and does not fracture in back process processing, and finished product simple structure, intensity height, low in production cost, this manufacturing approach can improve the intensity of utmost point ear, guarantees that utmost point ear can not damage in operations such as follow-up coiling, notes liquid, buckle limit.
Drawings
Fig. 1 is a schematic structural diagram of the present invention after step a is completed;
fig. 2 is a schematic structural diagram of the present invention after step b is completed;
fig. 3 is a schematic structural diagram of the present invention after step c is completed;
fig. 4 is a schematic structural diagram after step d of the present invention is completed.
Detailed Description
As shown in fig. 4, in this embodiment, a lithium ion battery electrode tab structure includes a strip-shaped electrode sheet foil 1, an upper electrode tab sheet 2, and a lower electrode tab sheet 3, a head portion of the strip-shaped electrode sheet foil 1 is connected to a tail portion of the upper electrode tab sheet 2, a head portion of the upper electrode tab sheet 2 is connected to a tail portion of the lower electrode tab sheet 3, the strip-shaped electrode sheet foil 1, the upper electrode tab sheet 2, and the lower electrode tab sheet 3 are integrally formed, a bending portion 4 is provided between the strip-shaped electrode sheet foil 1 and the upper electrode tab sheet 2, and a head portion of the lower electrode tab sheet 3 is clamped at the bending portion 4.
In this embodiment, the strip-shaped pole piece foil 1 and the upper pole tab piece 2 are in a 90-degree bending state, the head of the lower pole tab piece 3 is provided with a 45-degree oblique angle, and the upper pole tab piece 2 is overlapped with the lower pole tab piece 3.
In this embodiment, the electrode tab structure of the lithium ion battery further includes two pieces of adhesive paper 5 adhered to each other, and the bent portion 4 is located in the two pieces of adhesive paper 5.
A manufacturing method of a lithium ion battery electrode lug structure comprises the following steps:
a. as shown in fig. 1, the head of the strip-shaped pole piece foil 1 is made into a sharp-angled head 6 with an angle of 45 degrees;
b. bending for the first time: as shown in fig. 2, the head of the strip-shaped pole piece foil 1 is bent to the tail of the strip-shaped pole piece foil 1 by a section, and the bent section is the lower tab piece 3;
c. and (3) bending for the second time: as shown in fig. 3, the strip-shaped pole piece foil 1 is bent along the 45 ° bevel edge of the sharp corner head, the sharp corner head 6 is wrapped by the bent part 4 of the second bending, the bent section of the second bending is the upper pole tab piece 2, and the upper pole tab piece 2 is overlapped with the lower pole tab piece 3;
d. fixing a bent part: as shown in fig. 4, adhesive tapes 5 are disposed on both sides of the upper surface of the bending portion 4, and the adhesive tapes 5 on both sides of the upper surface are adhered to each other to fix the bending portion 4.
The manufacturing method can improve the strength of the tab and ensure that the tab cannot be damaged in the subsequent operations of winding, liquid injection, edge buckling and the like.
The utility model discloses be applied to the technical field who makes lithium ion battery electrode lug structure.
While the embodiments of the present invention have been described in terms of practical embodiments, they are not intended to limit the scope of the invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.
Claims (3)
1. The utility model provides a lithium ion battery electrode lug structure which characterized in that: the utility model provides a lithium ion battery electrode lug structure includes rectangular pole piece foil (1), goes up utmost point auricle (2), utmost point auricle (3) down, the head of rectangular pole piece foil (1) with the afterbody of going up utmost point auricle (2) links to each other, the head of going up utmost point auricle (2) with the afterbody of utmost point auricle (3) down links to each other, just rectangular pole piece foil (1) go up utmost point auricle (2) down utmost point auricle (3) integrated into one piece, rectangular pole piece foil (1) with kink (4) have between utmost point auricle (2) on, the head clamp of utmost point auricle (3) down is in kink (4) department.
2. The electrode tab structure of the lithium ion battery of claim 1, wherein: the long pole piece foil (1) and the upper pole lug (2) are in a 90-degree bending state, the head of the lower pole lug (3) is provided with a 45-degree oblique angle, and the upper pole lug (2) is overlapped with the lower pole lug (3).
3. The electrode tab structure of the lithium ion battery of claim 1, wherein: the electrode lug structure of the lithium ion battery further comprises two pieces of adhesive paper (5) which are adhered to each other, and the bent part (4) is located in the two pieces of adhesive paper (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921992826.5U CN211480179U (en) | 2019-11-18 | 2019-11-18 | Electrode lug structure of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921992826.5U CN211480179U (en) | 2019-11-18 | 2019-11-18 | Electrode lug structure of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211480179U true CN211480179U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921992826.5U Active CN211480179U (en) | 2019-11-18 | 2019-11-18 | Electrode lug structure of lithium ion battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510303A (en) * | 2020-12-02 | 2021-03-16 | 新余赣锋电子有限公司 | Button cell and electrode assembly connecting method thereof |
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2019
- 2019-11-18 CN CN201921992826.5U patent/CN211480179U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510303A (en) * | 2020-12-02 | 2021-03-16 | 新余赣锋电子有限公司 | Button cell and electrode assembly connecting method thereof |
| CN112510303B (en) * | 2020-12-02 | 2023-03-17 | 新余赣锋电子有限公司 | Button cell and electrode assembly connecting method thereof |
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