CN210489776U - Coil core assembly structure of button cell - Google Patents
Coil core assembly structure of button cell Download PDFInfo
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- CN210489776U CN210489776U CN201921508030.8U CN201921508030U CN210489776U CN 210489776 U CN210489776 U CN 210489776U CN 201921508030 U CN201921508030 U CN 201921508030U CN 210489776 U CN210489776 U CN 210489776U
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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 a coil core component structure of a button battery, the coil core component comprises a first electrode component, a second electrode component and an isolating piece, the first electrode component comprises a first pole piece and a first pole ear, one end part of the first pole piece is an empty foil part, the first pole ear is formed by folding the empty foil part of the first pole piece, and the top end of the first pole ear is connected with a first nickel strap; the second electrode assembly comprises a second pole piece and a second pole lug, one end of the second pole piece is an empty foil part, the second pole lug is formed by folding the empty foil part of the second pole piece, and the top end of the second pole lug is connected with a second nickel strap. The utility model provides a roll up core assembly structure, it has processing portably, is convenient for during the operation advantage such as location.
Description
Technical Field
The utility model relates to a button cell field, concretely relates to button cell's book core subassembly structure.
Background
With the development of science and technology, the application of lithium batteries is more and more extensive. The existing button battery winding core assembly structure is usually formed by winding a strip electrode into a winding core through a spot welding connecting sheet, and then the strip electrode is wound into the winding core through a winding machine, so that the manufacturing steps are complex, and when the tab of the winding core assembly extends to a button shell, the operation positioning is difficult and the operation difficulty is large, so that the button battery winding core structure which is simple and convenient to process and convenient to position during operation is necessary to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of button cell's roll up core assembly structure, this roll up core assembly structure, it is simple and convenient to have processing, the location of being convenient for during the operation, advantages such as welding strength is strong.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a winding core assembly structure of a button cell, the winding core assembly comprising a first electrode assembly, a second electrode assembly, and a separator for separating the first electrode assembly from the second electrode assembly, wherein: the first electrode assembly, the isolating piece and the second electrode assembly are sequentially stacked and wound into a winding core, and an axial cavity is formed in the center of the winding core;
the first electrode assembly comprises a first pole piece and a first pole lug, one end of the first pole piece is an empty foil part, the first pole lug is formed by folding the empty foil part of the first pole piece, the first pole lug extends out of the axial cavity, and the top end of the first pole lug is connected with a first nickel strap; the second electrode assembly comprises a second pole piece and a second pole lug, one end part of the second pole piece is an empty foil part, the second pole lug is formed by folding the empty foil part of the second pole piece, the second pole lug is arranged on the outer side of the winding core, and the top end of the second pole lug is connected with a second nickel strap.
Preferably, the first tab is perpendicular to the first pole piece, and the second tab is perpendicular to the second pole piece.
Preferably, the first nickel strap is arranged on the first tab by welding, and the second nickel strap is arranged on the second tab by welding.
Preferably, the first tab is arranged in parallel with the second tab, and the first tab tip is oriented opposite to the second tab tip.
Preferably, the first tab is positioned at one side of one opening of the axial cavity, and the first tab partially covers the opening; the second pole lug is positioned on one side of the other opening of the axial cavity.
Compared with the prior art, the beneficial effects of the utility model are that:
first utmost point ear and second utmost point ear are directly formed by the folding empty paper tinsel portion of first pole piece and second pole piece, it is more convenient consequently when coiling it into the book core, and because first utmost point ear and first pole piece are perpendicular setting, second utmost point ear and second pole piece are perpendicular setting, first utmost point ear and second utmost point ear parallel arrangement, consequently first nickel strap and second nickel strap can directly conveniently set up on first utmost point ear and second utmost point ear through the welding, it is easy to fix a position when making the welding of book core subassembly and button shell, the operation of being convenient for, thereby the efficiency of preparation button cell has been improved greatly, and through setting up first nickel strap and second nickel strap as the transition weld area with button shell, welding strength can effectively be increased, and then internal resistance and stability of ensuring button cell.
Drawings
Fig. 1 is the embodiment of the present invention, which is a schematic structural diagram of a roll core assembly structure.
Fig. 2 is a schematic structural view of the first tab formed by folding the first pole piece in the embodiment of the present invention.
Reference numbers in the figures: 11-winding core lug, 2-axial cavity, 3-first lug, 4-first nickel strap, 5-second lug, 6-second nickel strap, 7-first pole piece and 8-empty foil part.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, a winding core assembly structure of a button cell, the winding core assembly comprising a first electrode assembly, a second electrode assembly, and a separator for separating the first electrode assembly from the second electrode assembly, wherein: the first electrode assembly, the separator and the second electrode assembly are sequentially stacked and wound into a winding core 1, and an axial cavity 2 is formed in the center of the winding core; the first electrode assembly comprises a first pole piece 7 and a first pole lug 3, one end of the first pole piece is an empty foil part 8, the first pole lug is formed by folding the empty foil part of the first pole piece, the first pole lug extends out of the axial cavity, and the top end of the first pole lug is connected with a first nickel strap 4; the second electrode assembly comprises a second pole piece and a second pole lug 5, one end part of the second pole piece is an empty foil part, the second pole lug is formed by folding the empty foil part of the second pole piece, the second pole lug is arranged on the outer side of the winding core, and the top end of the second pole lug is connected with a second nickel strap 6. In this embodiment, the first tab and the second tab are arranged in parallel, and the direction of the top end of the first tab is opposite to that of the top end of the second tab; the first tab is positioned on one side of one opening of the axial cavity, and the first tab partially covers the opening; the second pole lug is positioned on one side of the other opening of the axial cavity.
In this embodiment, the winding core includes a first electrode winding portion wound by the first pole piece, a second electrode winding portion wound by the second pole piece, and an isolation winding portion wound by the isolation member. The first pole piece, the separator and the second pole piece are sequentially stacked, and the separator is used for separating the first electrode winding part and the second electrode winding part.
In this embodiment, the first tab 3 is formed by folding the first pole piece 7, as shown in fig. 2, one end of the first pole piece is an empty foil portion 8, and when the first tab is manufactured, the first tab is folded at a position indicated by an imaginary line of the empty foil portion, so that the first tab and the first pole piece form a structure which is perpendicular to each other. The principle that the second tab is formed by folding the second pole piece is the same as the principle that the first tab is formed by folding the first pole piece, and the description is omitted here. In addition, in this embodiment, the first nickel strap is disposed on the first tab by welding, and the first tab is disposed perpendicular to the first pole piece.
The roll core assembly structure that this embodiment provided, first utmost point ear and second utmost point ear are directly formed by the empty foil portion of first pole piece and second pole piece is folding, it is more convenient consequently when rolling up the core with it, and because first utmost point ear and first pole piece set up for perpendicular, second utmost point ear and second pole piece set up for perpendicular, and first utmost point ear and second utmost point ear parallel arrangement, consequently first nickel strap and second nickel strap can directly conveniently set up on first utmost point ear and second utmost point ear through the welding, it is easy to fix a position when making the welding of roll core assembly and button shell, and the operation of being convenient for, thereby the efficiency of preparation button cell has been improved greatly. Meanwhile, in order to increase the welding strength, a first nickel strap and a second nickel strap are respectively arranged at the top ends of the first lug and the second lug and are used as transition welding straps of the button shell, so that the welding strength can be effectively increased, and the internal resistance and the stability of the button battery are ensured.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a button cell's roll core subassembly structure, the roll core subassembly includes first electrode subassembly, second electrode subassembly and is used for keeping apart the separator of first electrode subassembly and second electrode subassembly, its characterized in that: the first electrode assembly, the separator and the second electrode assembly are sequentially stacked and wound into a winding core (1), and an axial cavity (2) is formed in the center of the winding core;
the first electrode assembly comprises a first pole piece (7) and a first pole lug (3), one end of the first pole piece is an empty foil part (8), the first pole lug is formed by folding the empty foil part of the first pole piece, the first pole lug extends out of the axial cavity, and the top end of the first pole lug is connected with a first nickel strap (4); the second electrode assembly comprises a second pole piece and a second pole lug (5), one end part of the second pole piece is an empty foil part, the second pole lug is formed by folding the empty foil part of the second pole piece, the second pole lug is arranged on the outer side of the winding core, and the top end of the second pole lug is connected with a second nickel strap (6).
2. The core assembly structure of claim 1, wherein: the first pole lug (3) is perpendicular to the first pole piece (7), and the second pole lug is perpendicular to the second pole piece.
3. The core assembly structure of claim 1, wherein: the first nickel strap (4) is arranged on the first pole lug (3) through welding, and the second nickel strap is arranged on the second pole lug through welding.
4. The core assembly structure of claim 2 or 3, wherein: the first lug and the second lug are arranged in parallel, and the orientation of the top end of the first lug is opposite to that of the top end of the second lug.
5. The core assembly structure of claim 4, wherein: the first tab is positioned on one side of one opening of the axial cavity, and the first tab partially covers the opening; the second pole lug is positioned on one side of the other opening of the axial cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921508030.8U CN210489776U (en) | 2019-09-11 | 2019-09-11 | Coil core assembly structure of button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921508030.8U CN210489776U (en) | 2019-09-11 | 2019-09-11 | Coil core assembly structure of button cell |
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| Publication Number | Publication Date |
|---|---|
| CN210489776U true CN210489776U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921508030.8U Active CN210489776U (en) | 2019-09-11 | 2019-09-11 | Coil core assembly structure of button cell |
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| CN (1) | CN210489776U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013527A (en) * | 2021-02-25 | 2021-06-22 | 东莞小锂新能源科技有限公司 | Novel button battery and manufacturing and mounting method of shell sealing element structure |
| CN113540400A (en) * | 2021-06-28 | 2021-10-22 | 大连中比动力电池有限公司 | Large-size cylindrical lithium ion secondary battery and positive and negative pole pieces thereof |
| WO2023070591A1 (en) * | 2021-10-29 | 2023-05-04 | 宁德新能源科技有限公司 | Electrochemical apparatus and electrical device |
-
2019
- 2019-09-11 CN CN201921508030.8U patent/CN210489776U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013527A (en) * | 2021-02-25 | 2021-06-22 | 东莞小锂新能源科技有限公司 | Novel button battery and manufacturing and mounting method of shell sealing element structure |
| CN113540400A (en) * | 2021-06-28 | 2021-10-22 | 大连中比动力电池有限公司 | Large-size cylindrical lithium ion secondary battery and positive and negative pole pieces thereof |
| WO2023070591A1 (en) * | 2021-10-29 | 2023-05-04 | 宁德新能源科技有限公司 | Electrochemical apparatus and electrical device |
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