CN212907874U - Battery without pole ear - Google Patents
Battery without pole ear Download PDFInfo
- Publication number
- CN212907874U CN212907874U CN202021785943.7U CN202021785943U CN212907874U CN 212907874 U CN212907874 U CN 212907874U CN 202021785943 U CN202021785943 U CN 202021785943U CN 212907874 U CN212907874 U CN 212907874U
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- Prior art keywords
- pole piece
- pole
- shell
- battery
- end surface
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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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Abstract
The utility model discloses a battery of electrodeless ear, the battery include shell and electric core, the shell contain: the utility model discloses a winding into an organic whole first pole piece and second pole piece to with the up end of first pole piece and first pole shell electric connection, the lower terminal surface and the second pole shell electric connection of second pole piece; by adopting the connection mode, welding is not needed, the process can be simplified, the cost is reduced, and the realization of automatic production is facilitated; meanwhile, the design of end face contact is adopted, so that rapid and stable charge and discharge can be realized, and the cycle life of the battery is prolonged; is particularly suitable for batteries with high discharge strength.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of batteries, specifically a battery of electrodeless ear.
[ background of the invention ]
The existing battery is generally connected with a pole piece and a pole shell through a pole lug, at present, the pole lug and the pole shell are generally connected through a welding mode, but the welding mode is complex in process, a cold joint phenomenon is easy to occur, large current is difficult to pass through, and the cost is high.
The utility model discloses it is not enough to solve prior art and research and propose promptly.
[ Utility model ] content
In order to solve the technical problem, the utility model discloses a battery of electrodeless ear, the battery include shell and electric core, the shell contain: the battery comprises a first pole piece and a second pole piece, wherein the first pole piece is made of a conductive material, the second pole piece is made of a conductive material, an insulating part for insulating the first pole piece and the second pole piece is arranged between the first pole piece and the second pole piece, a cavity for installing a battery cell is arranged between the first pole piece and the second pole piece, the battery cell comprises a first pole piece and a second pole piece which are wound mutually, the first pole piece and the second pole piece are close to each other, a separation film is arranged between the second pole piece of the first pole piece, the upper end face of the first pole piece protrudes out of the upper end face of the second pole piece, the lower end face of the second pole piece protrudes out of the lower end face of the first pole piece, the upper end face of the first pole piece is electrically connected with the first pole piece, and the lower end face of the second pole piece is electrically connected with the second pole piece.
According to the ear-free battery, the conducting strip A made of the foam conducting material is arranged between the upper end face of the first pole piece and the first pole shell, and the conducting strip B made of the foam conducting material is arranged between the lower end face of the second pole piece and the second pole shell.
According to the ear-free battery, the conductive adhesive is arranged in the contact area of the upper end surface of the first pole piece and the first pole shell, and the conductive adhesive is arranged in the contact area of the lower end surface of the second pole piece and the second pole shell.
According to the lug-free battery, the upper end surface of the first pole piece is provided with the convex teeth A for improving the guiding performance between the upper end surface of the first pole piece and the first pole shell.
According to the lug-free battery, the lower end face of the second pole piece is provided with the convex teeth B for improving the guiding performance between the lower end face of the second pole piece and the second pole shell.
According to the battery without the electrode lugs, the lower end of the first pole shell is provided with the shoulder protruding outwards, and the upper edge of the second pole shell is provided with the flanging matched with the shoulder.
Compared with the prior art, the utility model has the advantages of as follows:
1. the utility model winds the first pole piece and the second pole piece into a whole, and electrically connects the upper end face of the first pole piece with the first pole shell, and electrically connects the lower end face of the second pole piece with the second pole shell; by adopting the connection mode, welding is not needed, the process can be simplified, the cost is reduced, and the realization of automatic production is facilitated; meanwhile, the design of end face contact is adopted, so that rapid and stable charge and discharge can be realized, and the cycle life of the battery is prolonged; is particularly suitable for batteries with high discharge strength.
2. A conducting strip A or conducting glue is arranged between the upper end face of the first pole piece and the first pole shell to improve the conducting performance between the upper end face of the first pole piece and the first pole shell; similarly, a conducting strip B or conducting glue made of foam conducting materials is arranged between the lower end face of the second pole piece and the second pole piece shell, so that the conducting performance between the lower end face of the second pole piece and the second pole piece shell is improved.
[ description of the drawings ]
The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a perspective sectional view of the present invention;
fig. 3 is an exploded view of the present invention.
[ detailed description ] embodiments
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, the battery without electrode tab of this embodiment includes a housing 1 and a battery core 2, where the housing 1 includes: a first pole housing 11 made of an electrically conductive material and a second pole housing 12 made of an electrically conductive material, an insulating part 13 for insulating the first pole piece 11 and the second pole piece 12 is arranged between the first pole piece 11 and the second pole piece 12, a cavity for installing the battery core 2 is arranged between the first pole shell 11 and the second pole shell 12, the battery core 2 comprises a first pole piece 21 and a second pole piece 22 which are wound with each other, the first pole piece 21 and the second pole piece 22 are arranged next to each other, and a separation film 23 is arranged between the second pole pieces 22 of the first pole piece 21, the upper end surface of the first pole piece 21 protrudes out of the upper end surface of the second pole piece 22, the lower end surface of the second pole piece 22 protrudes out of the lower end surface of the first pole piece 21, the upper end surface of the first pole piece 21 is electrically connected with the first pole shell 11, and the lower end surface of the second pole piece 22 is electrically connected with the second pole shell 12. The utility model winds the first pole piece and the second pole piece into a whole, and electrically connects the upper end face of the first pole piece with the first pole shell, and electrically connects the lower end face of the second pole piece with the second pole shell; by adopting the connection mode, welding is not needed, the process can be simplified, the cost is reduced, and the realization of automatic production is facilitated; meanwhile, the design of end face contact is adopted, so that rapid and stable charge and discharge can be realized, and the cycle life of the battery is prolonged; is particularly suitable for batteries with high discharge strength.
In order to improve the contact area between the upper end surface of the first pole piece and the first pole shell and improve the conductivity between the upper end surface of the first pole piece and the first pole shell, a conducting strip a31 made of a foam conducting material is arranged between the upper end surface of the first pole piece 21 and the first pole shell 11, the conducting strip a can be connected to the inner side of the first pole shell in a spot welding or direct contact mode, and the foam conducting material can be a material with good conductivity such as foam copper, foam nickel and the like.
Similarly, in order to increase the contact area between the lower end surface of the second pole piece and the second pole piece shell and to increase the conductivity between the lower end surface of the second pole piece and the second pole piece shell, a conductive sheet B32 made of a foam conductive material is arranged between the lower end surface of the second pole piece 22 and the second pole piece shell 12, the conductive sheet B may be connected to the inner side of the second pole piece shell by spot welding or direct contact, and the foam conductive material may be a material with good conductivity, such as copper foam, nickel foam, or the like.
Between the upper end surface of the first pole piece 21 and the first pole shell 11, not only can the conductive sheet a be used to improve the conductive performance, but also a conductive adhesive can be disposed in the contact area between the upper end surface of the first pole piece 21 and the first pole shell 11, and a conductive adhesive is disposed in the contact area between the lower end surface of the second pole piece 22 and the second pole shell 12. Similarly, the conductive adhesive can be used for one of the pole shells, and the conductive sheet can be used for the other pole shell.
Methods for improving the conductive properties include: the upper end face of the first pole piece 21 is provided with a convex tooth A for improving the guiding performance between the upper end face of the first pole piece 21 and the first pole shell 11; the lower end surface of the second pole piece 22 is provided with a convex tooth B for improving the guiding performance between the lower end surface of the second pole piece 22 and the second pole piece case 12.
In order to improve the stability between the first pole housing and the second pole housing, a shoulder 111 protruding outwards is provided at the lower end of the first pole housing 11, and a flange 121 matching with the shoulder is provided at the upper edge of the second pole housing 12.
The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.
Claims (6)
1. A tab-less battery, comprising a housing (1) and a cell (2), wherein the housing (1) comprises: the battery comprises a first pole shell (11) made of a conductive material and a second pole shell (12) made of a conductive material, wherein an insulating part (13) is arranged between the first pole shell (11) and the second pole shell (12), a cavity for mounting a battery cell (2) is arranged between the first pole shell (11) and the second pole shell (12), the battery cell (2) comprises a first pole piece (21) and a second pole piece (22) which are wound mutually, the first pole piece (21) and the second pole piece (22) are close to each other, an isolating film (23) is arranged between the second pole piece (22) of the first pole piece (21), the upper end face of the first pole piece (21) protrudes out of the upper end face of the second pole piece (22), the lower end face of the second pole piece (22) protrudes out of the lower end face of the first pole piece (21), and the upper end face of the first pole piece (21) is electrically connected with the first pole shell (11), the lower end face of the second pole piece (22) is electrically connected with the second pole shell (12).
2. The battery without the tab as claimed in claim 1, wherein a conductive sheet a (31) made of a foam conductive material is disposed between the upper end surface of the first pole piece (21) and the first pole case (11), and a conductive sheet B (32) made of a foam conductive material is disposed between the lower end surface of the second pole piece (22) and the second pole case (12).
3. The battery without the tab as claimed in claim 1, wherein the area of the upper end surface of the first pole piece (21) contacting the first pole shell (11) is provided with a conductive adhesive, and the area of the lower end surface of the second pole piece (22) contacting the second pole shell (12) is provided with a conductive adhesive.
4. The battery without the tab as set forth in claim 1, wherein the upper end surface of the first pole piece (21) is provided with a convex tooth A for improving the electrical conductivity between the upper end surface of the first pole piece (21) and the first pole case (11).
5. The battery without the tab as set forth in claim 1, wherein the lower end surface of the second pole piece (22) is provided with a convex tooth B for improving the electrical conductivity between the lower end surface of the second pole piece (22) and the second pole case (12).
6. The tab-less battery according to claim 1, wherein the first electrode case (11) is provided at a lower end thereof with an outwardly protruding shoulder (111), and the second electrode case (12) is provided at an upper edge thereof with a flange (121) engaged with the shoulder (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021785943.7U CN212907874U (en) | 2020-08-24 | 2020-08-24 | Battery without pole ear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021785943.7U CN212907874U (en) | 2020-08-24 | 2020-08-24 | Battery without pole ear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212907874U true CN212907874U (en) | 2021-04-06 |
Family
ID=75247031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021785943.7U Active CN212907874U (en) | 2020-08-24 | 2020-08-24 | Battery without pole ear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212907874U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122632A (en) * | 2021-10-26 | 2022-03-01 | 上海道赢实业有限公司 | Conductive connection structure replacing tab welding, full-tab battery and preparation process thereof |
-
2020
- 2020-08-24 CN CN202021785943.7U patent/CN212907874U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122632A (en) * | 2021-10-26 | 2022-03-01 | 上海道赢实业有限公司 | Conductive connection structure replacing tab welding, full-tab battery and preparation process thereof |
| WO2023070821A1 (en) * | 2021-10-26 | 2023-05-04 | 上海道赢实业有限公司 | Conductive connection structure for replacing tab welding and full-tab battery and manufacturing process therefor |
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