CN212676327U - High-performance lithium battery - Google Patents
High-performance lithium battery Download PDFInfo
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- CN212676327U CN212676327U CN202021024742.5U CN202021024742U CN212676327U CN 212676327 U CN212676327 U CN 212676327U CN 202021024742 U CN202021024742 U CN 202021024742U CN 212676327 U CN212676327 U CN 212676327U
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- utmost point
- point ear
- negative pole
- 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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- 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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- Connection Of Batteries Or Terminals (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The utility model relates to a high performance lithium battery, including sealed battery case, the inside battery core that is provided with of battery case, the battery core is provided with positive pole piece and negative pole piece, it has electrolyte to fill between positive pole piece and the negative pole piece, be provided with the diaphragm between positive pole piece and the negative pole piece, positive pole piece, the diaphragm, the setting is stacked gradually to the negative pole piece, positive pole piece built-up connection has positive utmost point ear weld portion, positive utmost point ear weld portion is connected with positive utmost point ear, positive utmost point ear weld portion is located battery case one end surface, negative pole piece built-up connection has negative utmost point ear weld portion, negative utmost point ear weld portion is connected with negative utmost point ear, negative utmost point ear weld portion is located battery. The utility model adopts the polypropylene polymer film, which has strong corrosion resistance and good heat-resisting effect, and micropores are uniformly arranged on the surface of the film, thereby improving the liquid hanging capacity of the diaphragm; the positive electrode lug and the negative electrode lug are both nickel lugs and are fixed by laser welding, so that the problem that the lugs are easy to break is solved.
Description
Technical Field
The utility model relates to a high performance lithium cell belongs to lithium cell technical field.
Background
Lithium batteries have wide applications in electric vehicles and mobile power storage devices. The lithium battery has the advantages of long service life, high energy storage efficiency, no pollution and the like, and is key energy storage equipment for solving the future energy crisis and environmental crisis. The development of the battery industry is changing day by day, more high-performance batteries emerge, the requirements of life and production of human society are met, and the lithium battery with better comprehensive performance is better and faster pushed out on the basis of continuous innovation of the technology, so that the lithium battery is the responsibility of people in the technical field to be used up in the working range.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a high performance lithium cell, its concrete technical scheme as follows:
high performance lithium cell, its characterized in that: comprises a sealed battery shell, a battery core is arranged in the battery shell, the battery core is provided with a plurality of groups of positive pole pieces and negative pole pieces which are sequentially laminated, a diaphragm is arranged between the adjacent positive pole pieces and negative pole pieces, electrolyte is filled between the positive pole pieces and the negative pole pieces,
all the positive pole pieces are combined and connected with a positive pole lug welding part, the positive pole lug welding part is connected with a positive pole lug, and the positive pole lug welding part is positioned on the surface of one end of the battery shell;
all negative pole piece integrated connection has negative pole utmost point ear weld part, negative pole utmost point ear weld part be connected with negative pole utmost point ear, negative pole utmost point ear weld part is located battery case surface and sets up with anodal utmost point ear weld part homonymy.
Furthermore, the positive pole piece is provided with a positive pole current collector and a graphene layer coated on the surface of the positive pole current collector, and the negative pole piece is provided with a negative pole current collector and a lithium metal layer coated on the surface of the negative pole current collector.
Furthermore, the positive electrode lug and the negative electrode lug are both nickel lugs, and the welding part of the positive electrode lug and the welding part of the negative electrode lug and the negative electrode lug are fixed through laser welding.
Furthermore, the diaphragm is a polypropylene polymer diaphragm, and a plurality of micropores are uniformly formed in the surface of the diaphragm.
Further, the positive current collector is a double-sided polished aluminum foil and is coated on the surface of the positive pole piece, and the negative current collector is a double-sided polished iron foil and is coated on the surface of the negative pole piece.
Furthermore, the battery shell is a nickel-plated aluminum shell.
The utility model has the advantages that:
the utility model adopts the polypropylene polymer film, which has strong corrosion resistance and good heat-resisting effect, and micropores are uniformly arranged on the surface of the film, thereby improving the liquid hanging capacity of the diaphragm and keeping the stability of the battery; the positive electrode lug and the negative electrode lug are both nickel lugs and are fixed by laser welding, so that the problem that the lugs are easy to break is solved; the optimized design of the positive current collector of the positive pole piece, the graphene layer coated on the surface of the positive current collector, the negative current collector of the negative pole piece and the lithium metal layer coated on the surface of the negative current collector improves the negative capacity and reduces the internal resistance, and the lithium battery has the advantages of good multiplying power performance, good cycle performance and good safety; the current collector of the negative electrode is a double-sided polished iron foil, which is cheaper than an aluminum foil, and is economical and applicable.
Drawings
Figure 1 is a front view of the present invention,
figure 2 is a left side view of the present invention,
figure 3 is a schematic diagram of the structure of the battery cell of the present invention,
in the figure: 1-battery shell, 2-negative pole lug welding part, 3-negative pole lug, 4-positive pole lug, 5-positive pole lug welding part, 6-positive pole piece, 7-diaphragm, 8-negative pole piece, 9-graphene layer, 10-double-sided smooth aluminum foil, 11-double-sided smooth iron foil and 12-lithium metal layer.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1 and fig. 3, the high performance lithium battery of the present invention includes a sealed battery case 1, and the battery case 1 is a nickel-plated aluminum case. The battery shell 1 is internally provided with a battery core, and the battery core is provided with a positive pole piece 6 and a negative pole piece 8. The positive pole piece 6 is provided with a positive current collector and a graphene layer 9 coated on the surface of the positive current collector, and the negative pole piece 8 is provided with a negative current collector and a lithium metal layer 12 coated on the surface of the negative current collector. The positive current collector is a double-sided polished aluminum foil 10 coated on the surface of the positive pole piece 6, and the negative current collector is a double-sided polished iron foil 11 coated on the surface of the negative pole piece 8. Electrolyte is filled between the positive pole piece 6 and the negative pole piece 8, a diaphragm 7 is arranged between the positive pole piece 6 and the negative pole piece 8, the diaphragm 7 is a polypropylene polymer diaphragm, and micropores are uniformly formed in the surface of the diaphragm 7. Anodal pole piece 6, diaphragm 7, negative pole piece 8 stacks gradually the setting, anodal pole piece 6 combined connection has anodal utmost point ear welding portion 5, anodal utmost point ear welding portion 5 is connected with anodal utmost point ear 4, anodal utmost point ear welding portion 5 is located 1 one end surface of battery housing, 8 combined connection has negative pole ear welding portion 2 of negative pole piece, negative pole ear welding portion 2 is connected with negative pole utmost point ear 3, negative pole ear welding portion 2 is located battery housing 1 surface and sets up with anodal utmost point ear welding portion 5 homonymy, anodal utmost point ear 4 is nickel utmost point ear with negative pole utmost point ear 3, anodal utmost point ear 4 and anodal utmost point ear welding portion 5, negative pole utmost point ear 3 all fixes through laser.
The utility model adopts the polypropylene polymer film, which has strong corrosion resistance and good heat-resisting effect, and micropores are uniformly arranged on the surface of the film, thereby improving the liquid hanging capacity of the diaphragm and keeping the stability of the battery; the positive electrode lug and the negative electrode lug are both nickel lugs and are fixed by laser welding, so that the problem that the lugs are easy to break is solved; the optimized design of the positive current collector of the positive pole piece, the graphene layer coated on the surface of the positive current collector, the negative current collector of the negative pole piece and the lithium metal layer coated on the surface of the negative current collector reduces the impedance value of the pole piece, and has the advantages of good multiplying power performance, good cycle performance and good safety; the current collector of the negative electrode is a double-sided polished iron foil, which is cheaper than an aluminum foil, and is economical and applicable.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A high performance lithium battery, characterized in that: comprises a sealed battery shell (1), a battery core is arranged in the battery shell (1), the battery core is provided with a plurality of groups of positive pole pieces (6) and negative pole pieces (8) which are sequentially laminated, a diaphragm (7) is arranged between the adjacent positive pole pieces (6) and negative pole pieces (8), electrolyte is filled between the positive pole pieces (6) and the negative pole pieces (8),
all the positive pole pieces (6) are connected with a positive pole lug welding part (5) in a combined mode, the positive pole lug welding part (5) is connected with a positive pole lug (4), and the positive pole lug welding part (5) is located on the surface of one end of the battery shell (1);
all negative pole piece (8) integrated connection has negative pole utmost point ear weld part (2), negative pole utmost point ear weld part (2) be connected with negative pole utmost point ear (3), negative pole utmost point ear weld part (2) are located battery case (1) surface and set up with anodal utmost point ear weld part (5) syntropy.
2. A high performance lithium battery as claimed in claim 1, characterized in that: the positive pole piece (6) is provided with a positive pole current collector and a graphene layer (9) coated on the surface of the positive pole current collector, and the negative pole piece (8) is provided with a negative pole current collector and a lithium metal layer (12) coated on the surface of the negative pole current collector.
3. A high performance lithium battery as claimed in claim 1, characterized in that: anodal utmost point ear (4) are nickel utmost point ear with negative pole utmost point ear (3), and anodal utmost point ear (4) all are fixed through laser welding with anodal utmost point ear weld part (5), negative pole utmost point ear (3) and negative pole utmost point ear weld part (2).
4. A high performance lithium battery as claimed in claim 1, characterized in that: the diaphragm (7) is a polypropylene high-molecular diaphragm, and a plurality of micropores are uniformly formed in the surface of the diaphragm (7).
5. A high performance lithium battery as claimed in claim 2, characterized in that: the positive current collector is a double-sided light aluminum foil (10) which is coated on the surface of the positive pole piece (6), and the negative current collector is a double-sided light iron foil (11) which is coated on the surface of the negative pole piece (8).
6. A high performance lithium battery as claimed in claim 1, characterized in that: the battery shell (1) is a nickel-plated aluminum shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021024742.5U CN212676327U (en) | 2020-06-05 | 2020-06-05 | High-performance lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021024742.5U CN212676327U (en) | 2020-06-05 | 2020-06-05 | High-performance lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212676327U true CN212676327U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021024742.5U Active CN212676327U (en) | 2020-06-05 | 2020-06-05 | High-performance lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212676327U (en) |
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2020
- 2020-06-05 CN CN202021024742.5U patent/CN212676327U/en active Active
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