CN111200097A - Shaping structure of lithium ion battery tab - Google Patents
Shaping structure of lithium ion battery tab Download PDFInfo
- Publication number
- CN111200097A CN111200097A CN201911209784.8A CN201911209784A CN111200097A CN 111200097 A CN111200097 A CN 111200097A CN 201911209784 A CN201911209784 A CN 201911209784A CN 111200097 A CN111200097 A CN 111200097A
- Authority
- CN
- China
- Prior art keywords
- tab
- roll core
- battery
- core body
- positive
- 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.)
- Withdrawn
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a shaping structure of a lithium ion battery tab, which comprises a battery roll core body, wherein side edge glue is respectively pasted on the left side and the right side of the battery roll core body; the bottom of the battery roll core body is connected with bottom glue; the top of the battery roll core body is connected with a positive electrode lug and a negative electrode lug, and the positive electrode lug and the negative electrode lug are connected with a positive electrode false lug and a negative electrode false lug through ultrasonic welding; and the welding part and the upper part of the battery roll core body are coated and pasted by adopting tab pasting glue, then the positive tab and the negative tab are turned upwards, and the welding part, the positive tab and the negative tab are turned upwards again. According to the invention, the welding part is rubberized, so that metal burrs generated by welding and shearing are separated from the diaphragm, the diaphragm at the top of the winding core is prevented from being punctured by the metal burrs, and the safety performance of the battery is improved; the welding part is turned to the top of the roll core, the internal space of the battery and the energy density of the battery can be improved and utilized, and the method is simple, convenient to operate and obvious in effect.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a shaping structure of a lithium ion battery tab.
Background
The existing laminated lithium ion battery mainly comprises a Z-shaped laminated sheet and a winding laminated sheet, wherein the Z-shaped laminated sheet is mainly formed by cutting and punching positive and negative pole pieces respectively to form a single pole piece with a false pole lug, a diaphragm of the single pole piece is in a Z-shaped lap winding, the positive and negative pole pieces are sequentially and alternately stacked, and the middle of the single pole piece is separated by the diaphragm. After lamination, the positive and negative electrode false tabs and the positive and negative electrode tabs are integrated together in a welding mode, meanwhile, the reserved space at the top is enlarged, and the utilization rate of the internal space of the battery is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a shaping structure of a lithium ion battery tab, which is simple in structure and practical.
The invention is realized by the following modes:
the utility model provides a plastic structure of lithium ion battery utmost point ear which characterized in that: the battery roll core comprises a battery roll core body, wherein side edge glue is respectively adhered to the left side and the right side of the battery roll core body; the bottom of the battery roll core body is connected with a bottom glue; the top of the battery roll core body is connected with a positive electrode lug and a negative electrode lug, and the positive electrode lug and the negative electrode lug are connected with a positive electrode false lug and a negative electrode false lug through ultrasonic welding; the positive pole false tab and the negative pole false tab are respectively connected with the positive pole tab and the negative pole tab to form welding parts; the welding position and the upper part of the battery roll core body are pasted by adopting tab pasting for coating, then the positive tab and the negative tab are turned over by 90 degrees upwards, so that the positive tab and the negative tab are in a vertical state with the battery roll core body, the welding position together with the positive tab and the negative tab is turned over by 90 degrees upwards again, and the welding position is located at the top of the battery roll core body.
Further, the number of the side glue is three.
The invention has the beneficial effects that: the reserved size of the welding part can be adjusted according to the thickness of the winding core, the firmness of tab welding is guaranteed, metal burrs generated by welding and shearing are separated from the diaphragm by gluing the welding part, the diaphragm at the top of the winding core is prevented from being punctured by the metal burrs, and the safety performance of the battery is improved; the welding part is folded to the top of the roll core, the utilization of the internal space of the battery and the energy density of the battery can be improved, the process is simple, the operation is convenient, the effect is obvious, and great significance is achieved.
Drawings
FIG. 1 is a front view of a tab welding of the present invention;
fig. 2 is a side view of the tab welding of the present invention;
fig. 3 is a front view of the tab cutting and tab taping of the present invention;
fig. 4 side view of cutting and rubberizing of tab of the invention
Fig. 5 is a side view of a tab of the present invention in a first reforming operation;
fig. 6 is a front view of a tab of the present invention after secondary reshaping;
fig. 7 is a side view showing a secondary reshaping of a tab in accordance with the present invention.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific examples in conjunction with the accompanying drawings. It is to be understood that the embodiments of the present invention are not limited to the following examples, and that any changes and/or modifications made thereto will fall within the scope of the present invention.
Example (b):
a shaping structure of a lithium ion battery tab is shown in figures 1-7 and comprises a battery roll core body 3, wherein three side edge glues 4 are respectively adhered to the left side and the right side of the battery roll core body 3; the bottom of the battery roll core body 3 is connected with a bottom glue 5; the top of the battery roll core body 3 is connected with a positive electrode tab 1 and a negative electrode tab 2, and the positive electrode tab 1 and the negative electrode tab 2 are connected with a positive electrode false tab 7 and a negative electrode false tab 8 through ultrasonic welding; a welding part 6 is formed at the joint of the positive pole false tab 7 and the negative pole false tab 8 with the positive pole tab 1 and the negative pole tab 2 respectively; the welding position 6 and the upper part of the battery roll core body 3 are coated and pasted by the tab pasting glue 9, then the positive tab 1 and the negative tab 2 are turned over by 90 degrees upwards, the positive tab 1 and the negative tab 2 are perpendicular to the battery roll core body 3, the welding position 6 together with the positive tab 1 and the negative tab 2 is turned over by 90 degrees upwards again, and the welding position 6 is located at the top of the battery roll core body 3.
The reserved size of the welding part 6 in the embodiment can be adjusted according to the thickness of the battery roll core body 3, the welding firmness of the positive electrode tab 1 and the negative electrode tab 2 is ensured, metal burrs generated by welding and shearing are separated from the diaphragm by gluing the welding part 6, the diaphragm at the top of the battery roll core body 3 is prevented from being punctured by the metal burrs, and the safety performance of the battery is improved; the welding part 6 is folded to the top of the battery roll core body 3, the internal space of the battery and the energy density of the battery can be improved and utilized, the process is simple, the operation is convenient, the effect is obvious, and great significance is achieved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (2)
1. The utility model provides a plastic structure of lithium ion battery utmost point ear which characterized in that: the battery roll core comprises a battery roll core body (3), wherein side edge glue (4) is respectively adhered to the left side and the right side of the battery roll core body (3); the bottom of the battery roll core body (3) is connected with a bottom glue (5); the top of the battery roll core body (3) is connected with a positive electrode lug (1) and a negative electrode lug (2), and the positive electrode lug (1) and the negative electrode lug (2) are connected with a positive electrode false lug (7) and a negative electrode false lug (8) through ultrasonic welding; the joint of the positive pole false tab (7) and the negative pole false tab (8) and the positive pole tab (1) and the negative pole tab (2) respectively forms a welding part (6); the welding position (6) and the upper part of the battery roll core body (3) are coated and pasted by adopting the tab adhesive (9), then the positive tab (1) and the negative tab (2) are turned over by 90 degrees upwards, the positive tab (1) and the negative tab (2) are perpendicular to the battery roll core body (3), the welding position (6) together with the positive tab (1) and the negative tab (2) are turned over by 90 degrees upwards again, and the welding position (6) is located at the top of the battery roll core body (3).
2. The shaping structure of a lithium ion battery tab of claim 1, characterized in that: the number of the side glue (4) is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911209784.8A CN111200097A (en) | 2019-12-01 | 2019-12-01 | Shaping structure of lithium ion battery tab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911209784.8A CN111200097A (en) | 2019-12-01 | 2019-12-01 | Shaping structure of lithium ion battery tab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111200097A true CN111200097A (en) | 2020-05-26 |
Family
ID=70746864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911209784.8A Withdrawn CN111200097A (en) | 2019-12-01 | 2019-12-01 | Shaping structure of lithium ion battery tab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111200097A (en) |
-
2019
- 2019-12-01 CN CN201911209784.8A patent/CN111200097A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200526 |