CN211605196U - Double-rivet lithium ion battery cell - Google Patents
Double-rivet lithium ion battery cell Download PDFInfo
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- CN211605196U CN211605196U CN202020038478.4U CN202020038478U CN211605196U CN 211605196 U CN211605196 U CN 211605196U CN 202020038478 U CN202020038478 U CN 202020038478U CN 211605196 U CN211605196 U CN 211605196U
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- rivet
- battery cell
- lithium ion
- top cover
- ion battery
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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
Abstract
The utility model discloses a double-rivet lithium ion battery cell, which comprises a shell and a top cover, wherein an electric core is arranged in the shell, the electric core comprises a positive plate, a negative plate and a diaphragm plate, the positive plate is packaged between the two diaphragm plates to form a diaphragm bag, the diaphragm bag and the negative plate are overlapped to form a stacked core, a positive electrode tab group and a negative electrode tab group of the stacked core are respectively welded with the positive electrode tab and the negative electrode tab of the stacked core, an aluminum rivet and a nickel rivet are arranged on the top cover, and the positive electrode tab and the negative electrode tab of the stacked core are respectively welded on the aluminum rivet and the nickel rivet; an insulating sheet is arranged between the stack core and the top cover. The utility model discloses an electricity core has characteristics such as security height, internal resistance are low, the technology preparation nature is good.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery, concretely relates to two rivet lithium ion battery cell.
Background
The lithium ion battery cell is a novel battery energy source. The reaction mechanism of the lithium ion cell is that along with the progress of charging and discharging, lithium ions are inserted and removed between the positive electrode and the negative electrode and shuttle back and forth inside the cell without the existence of metal lithium, so that the lithium ion cell is safer and more stable. The conventional lithium ion battery cell is generally divided into a winding cell and a laminated cell. The winding type battery cell is simple to process and manufacture, but has the defects of high internal resistance, poor high-rate charge and discharge performance, low safety and the like.
Disclosure of Invention
To prior art's not enough, the utility model aims to provide a two rivet lithium ion battery cell compares with the soft packet of electricity core of conventional coiling type, has characteristics such as the security is high, the internal resistance is low, the technology preparation nature is good.
In order to achieve the above object, the utility model adopts the following technical scheme: a double-rivet lithium ion battery cell comprises a shell and a top cover, wherein a battery cell is arranged in the shell and comprises a positive plate, a negative plate and diaphragm sheets, the positive plate is packaged between the two diaphragm sheets to form a diaphragm bag, the diaphragm bag and the negative plate are overlapped to form a stacked core, a positive electrode tab group and a negative electrode tab group of the stacked core are respectively welded with the positive electrode tab and the negative electrode tab of the stacked core, an aluminum rivet and a nickel rivet are arranged on the top cover, and the positive electrode tab and the negative electrode tab of the stacked core are respectively welded on the aluminum rivet and the nickel rivet; an insulating sheet is arranged between the stack core and the top cover.
Preferably, the aluminum rivet and the nickel rivet are arranged on the upper surface of the top cover.
Preferably, the aluminum rivet and the nickel rivet are both of circular structures, and the size of the aluminum rivet is larger than that of the nickel rivet.
Preferably, a gasket is arranged between the aluminum rivet, the nickel rivet and the top cover.
Preferably, be provided with on the top cap and annotate the liquid hole, annotate the liquid hole through laser welding after annotating the liquid.
Preferably, the shell is of a cylindrical structure, and the top cover and the shell are welded together through laser welding.
The battery core or the structure of the patent is formed by manufacturing a positive plate, a negative plate and a positive plate diaphragm bag, wherein the components are manufactured into a stack core in a laminated mode according to the positive electrode, the diaphragm and the negative electrode, a positive electrode lug group and a negative electrode lug group of the stack core are welded with the positive electrode lug and the negative electrode lug respectively, the positive electrode lug and the negative electrode lug are welded on an aluminum rivet and a nickel rivet of a cover plate respectively, the cover plate and a shell are welded through laser welding, a liquid injection hole is formed in the cover plate, and the liquid injection hole is
Compared with the prior art, the beneficial effects of the utility model reside in that: the shell and the top cover of the lithium ion cell of the utility model are welded by laser welding, which has better sealing performance; the battery cell adopts a laminated structure, and overlapping can be accurately controlled, so that the safety of the battery cell is improved; the battery core adopts a laminated structure, the electric conductivity of the tab group is superior to that of a winding structure, and the internal resistance of the battery core is effectively reduced; the internal resistance of the aluminum rivet and the nickel rivet is lower than that of the original stainless steel anode and cathode; fold core top and have the insulating piece, prevent to fold core inflation short circuit, the insulating piece material is not limited to PP.
Drawings
FIG. 1 is an external structural view of the present invention;
fig. 2 is an internal structure diagram of the present invention.
In the figure: 1-aluminum rivet, 2-top cover, 3-nickel rivet, 4-shell, 5-diaphragm sheet, 6-positive plate, 7-negative plate, 8-negative plate, 9-positive plate and 10-insulation sheet.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 1 and 2, an embodiment of the present invention: a double-rivet lithium ion battery cell comprises a shell 4 and a top cover 2, wherein the shell 4 is internally provided with a battery cell, the battery cell comprises a positive plate 6, a negative plate 7 and diaphragm sheets 5, the positive plate 6 is packaged between the two diaphragm sheets 5 to form a diaphragm bag, the diaphragm bag and the negative plate 7 are overlapped to form a stacked cell, a positive electrode lug group and a negative electrode lug group of the stacked cell are respectively welded with a positive electrode lug (9) and a negative electrode lug (8), the top cover 2 is provided with an aluminum rivet 1 and a nickel rivet 3, and the positive electrode lug 9 and the negative electrode lug 8 of the stacked cell are respectively welded on the aluminum rivet 1 and the nickel rivet 3; an insulation sheet 10 is arranged between the stack core and the top cover 2.
Specifically, the aluminum rivet 1 and the nickel rivet 3 are arranged on the upper surface of the top cover 2, the aluminum rivet 1 and the nickel rivet 3 are both in a circular structure, and the size of the aluminum rivet 1 is larger than that of the nickel rivet 3; gaskets are arranged between the aluminum rivets 1, the nickel rivets 3 and the top cover 2. Be provided with on the top cap 2 and annotate the liquid hole, annotate the liquid hole through laser welding after annotating the liquid. The shell 4 is of a cylindrical structure, and the top cover 2 and the shell 4 are welded together through laser welding.
The utility model discloses positive plate 6 and negative pole piece 7 of electric core are through towards the piece shaping, positive plate 6 is through in the middle of two diaphragm 5 of bag making technology encapsulation again, just, negative pole piece 6, 7 respectively with anodal ear (9) after folding the core, the core is made together to negative pole ear (8) welding, the positive negative pole utmost point ear crowd of folding the core respectively with anodal ear (9), negative pole ear (8) welding is in the same place, anodal ear (9), negative pole ear (8) weld respectively on top cap 2's aluminum rivet 1 and nickel rivet 3, use aluminum rivet 1 and nickel rivet 3, it is lower than original positive negative pole internal resistance of stainless steel. The top cover 2 and the shell 4 are welded through laser welding, a liquid injection hole is formed in the top cover 2, and the liquid injection hole is welded through laser after liquid injection to manufacture the lithium ion battery.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a two rivet lithium ion battery cell, includes casing (4) and top cap (2), its characterized in that: the battery cell is arranged in the shell (4) and comprises a positive plate (6), a negative plate (7) and diaphragm plates (5), the positive plate (6) is packaged between the two diaphragm plates (5) to form a diaphragm bag, the diaphragm bag and the negative plate (7) are overlapped to form a stacked core, a positive electrode lug group and a negative electrode lug group of the stacked core are respectively welded with a positive electrode lug (9) and a negative electrode lug (8) of the stacked core, the top cover (2) is provided with an aluminum rivet (1) and a nickel rivet (3), and the positive electrode lug (9) and the negative electrode lug (8) of the stacked core are respectively welded on the aluminum rivet (1) and the nickel rivet (3); an insulating sheet (10) is arranged between the stack core and the top cover (2).
2. The double-rivet lithium ion battery cell of claim 1, characterized in that: the aluminum rivets (1) and the nickel rivets (3) are arranged on the upper surface of the top cover (2).
3. The double-rivet lithium ion battery cell of claim 2, characterized in that: the aluminum rivet (1) and the nickel rivet (3) are both of a circular structure, and the size of the aluminum rivet (1) is larger than that of the nickel rivet (3).
4. The double-rivet lithium ion battery cell of claim 3, characterized in that: gaskets are arranged among the aluminum rivets (1), the nickel rivets (3) and the top cover (2).
5. A double-rivet lithium ion battery cell according to any one of claims 1 to 4, characterized in that: and a liquid injection hole is formed in the top cover (2) and is injected by laser welding after liquid injection.
6. The double-rivet lithium ion battery cell of claim 5, characterized in that: the shell (4) is of a cylindrical structure.
7. The double-rivet lithium ion battery cell of claim 6, characterized in that: the top cover (2) and the shell (4) are welded together through laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020038478.4U CN211605196U (en) | 2020-01-09 | 2020-01-09 | Double-rivet lithium ion battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020038478.4U CN211605196U (en) | 2020-01-09 | 2020-01-09 | Double-rivet lithium ion battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211605196U true CN211605196U (en) | 2020-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020038478.4U Active CN211605196U (en) | 2020-01-09 | 2020-01-09 | Double-rivet lithium ion battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211605196U (en) |
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2020
- 2020-01-09 CN CN202020038478.4U patent/CN211605196U/en active Active
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