CN211828840U - Tabletting type lithium ion battery pole piece - Google Patents
Tabletting type lithium ion battery pole piece Download PDFInfo
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- CN211828840U CN211828840U CN202020362513.8U CN202020362513U CN211828840U CN 211828840 U CN211828840 U CN 211828840U CN 202020362513 U CN202020362513 U CN 202020362513U CN 211828840 U CN211828840 U CN 211828840U
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- pole piece
- electricity
- buckling shell
- shell
- buckling
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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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- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a tabletting type lithium ion battery pole piece, which comprises an electricity-buckling shell and an electricity-buckling shell, wherein a negative pole piece, a diaphragm and a positive pole piece are embedded between the electricity-buckling shell and the electricity-buckling shell, the negative pole piece and the positive pole piece are symmetrically distributed on the upper surface and the lower surface of the diaphragm, an annular convex edge is arranged at the edge of the electricity-buckling shell, the outer diameter of the annular convex edge is equal to the inner diameter of the electricity-buckling shell, a pressing plate with uniform interval distribution is fixedly arranged at the edge of the upper surface of the electricity-buckling shell, and a sealing rubber ring is arranged on the upper surface of the annular convex edge; through designing this preforming formula lithium ion battery pole piece, compare the battery of ordinary copper aluminium foil for the positive negative pole piece preparation of mass flow body, this battery has improved energy density, and then improves battery capacity by a wide margin, designs the clamp plate, through buckling of clamp plate, is convenient for realize detaining on the electricity casing with detain quick gas tightness equipment under the electricity casing.
Description
Technical Field
The utility model belongs to the technical field of knot formula lithium ion battery's manufacturing, concretely relates to preforming formula lithium ion battery pole piece.
Background
As a novel chemical power source, the lithium ion battery has excellent electrochemical performance, no pollution and other characteristics, and along with the improvement of the living standard of people, various wearable small-sized electronic devices emerge, such as bluetooth earphones, electronic pens, intelligent glasses and the like.
The existing common button cell is formed by winding a positive plate and a negative plate or by laminating a circular positive plate and a circular negative plate, and the structures contain copper foils and aluminum foils as current collectors, so that the problems of space waste and low energy density are solved, and therefore, the pressing type lithium ion battery pole piece is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a preforming formula lithium ion battery pole piece to solve the current ordinary button cell who proposes in the above-mentioned background art, form by a positive plate and a negative pole piece coiling, or form by a circular shape positive plate and negative pole piece lamination, these structures all contain copper foil and aluminium foil as the mass flow body, extravagant space, problem that energy density is little.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a preforming formula lithium ion battery pole piece, on detaining the electricity casing and under the electricity casing, detain on the electricity casing and detain between the electricity casing under the embedding be provided with negative pole piece, diaphragm and positive pole piece, negative pole piece and positive pole piece symmetric distribution are on the upper and lower surface of diaphragm, the edge of detaining on the electricity casing is provided with the protruding edge of circle shape, the external diameter on the protruding edge of circle shape equals the internal diameter under the electricity casing of detaining, and detains the fixed clamp plate that is provided with even interval distribution in upper surface edge under the electricity casing, the sealed rubber ring has been placed to the upper surface on the protruding edge of circle shape.
Preferably, the thickness of the negative pole piece is 0.5-3 mm, and the thickness of the positive pole piece is 0.5-3 mm.
Preferably, the diameter of the diaphragm is 1-2 mm larger than that of the negative pole piece, and the diameter of the negative pole piece is 0-1 mm larger than that of the positive pole piece.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) compared with a battery which is manufactured by taking common copper-aluminum foils as positive and negative pole pieces of a current collector, the battery has the advantages that the energy density is improved, and the capacity of the battery is greatly improved.
(2) Through the design clamp plate, through buckling of clamp plate, be convenient for realize detain on the electricity casing with detain quick gas tightness equipment under the electricity casing.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an exploded view of the button cell of the present invention;
fig. 3 is a top view of the button cell of the present invention;
in the figure: 1. buckling the shell; 2. sealing the rubber ring; 3. buckling the lower part of the shell; 4. a negative pole piece; 5. a diaphragm; 6. a positive electrode plate; 7. and (7) pressing a plate.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a preforming formula lithium ion battery pole piece, 3 under 1 and the electricity shell of detaining on detaining the electricity shell, detain on the electricity shell 1 and detain the electricity shell under 3 between the embedding be provided with negative pole piece 4, diaphragm 5 and positive pole piece 6, negative pole piece 4 and positive pole piece 6 symmetric distribution are at diaphragm 5 upper and lower surface, and positive pole piece 6 comprises anodal active material and conductive agent, joins in marriage respectively for anodal active material: the conductive agent is 96: 2%, the negative electrode plate 4 consists of a negative active material and a conductive agent, and the ratio of the negative active material to the conductive agent is as follows: the conductive agent is 96: 2%, the edge of the upper buckling shell 1 is provided with a circular convex edge, the outer diameter of the circular convex edge is equal to the inner diameter of the lower buckling shell 3, the edge of the upper surface of the lower buckling shell 3 is fixedly provided with pressing plates 7 which are uniformly distributed at intervals, the upper surface of the circular convex edge is provided with a sealing rubber ring 2, and the pressing plates 7 are bent and pressed on the sealing rubber ring 2 to realize the air-tight buckling of the upper buckling shell 1 and the lower buckling shell 3.
In this embodiment, the positive electrode active material is composed of one or more of lithium cobaltate, lithium manganate, lithium nickel cobalt manganese and lithium iron phosphate, the negative electrode active material is composed of one or more of graphite, mesocarbon microbeads and silicon, and the conductive agent is one of carbon black, carbon nanotubes and graphene.
In this embodiment, the thickness of the negative electrode plate 4 is 1mm, the thickness of the positive electrode plate 6 is 0.5mm, the diameter of the diaphragm 5 is 1mm larger than that of the negative electrode plate 4, and the diameter of the negative electrode plate 4 is 0.5mm larger than that of the positive electrode plate 6.
The utility model discloses a theory of operation and use flow: through setting up clamp plate 7, stack negative pole piece 4, diaphragm 5 and positive pole piece 6 earlier in detaining electricity casing 3 down, then will detain 1 lock on the electricity casing 3 down, will seal rubber ring 2 and place 1 edge on detaining electricity casing, sticis it through compressing tightly equipment, buckle the pressfitting simultaneously with clamp plate 7 on seal rubber ring 2, realize detaining 1 on the electricity casing and detain 3 gas tightness lock under the electricity casing.
A positive electrode tabletting pole piece, a negative electrode tabletting pole piece and a diaphragm are stacked together and are arranged in a button cell shell, the part of the button cell shell, which is contacted with the pole pieces, is coated with acrylic acid glue containing graphene, the upper part of the shell is contacted with the positive electrode piece, the lower part of the shell is contacted with the negative electrode piece, the diameter of the diaphragm is 1-2 mm larger than that of the negative electrode piece, the diameter of the negative electrode tabletting pole piece is 0-1 mm larger than that of the positive electrode tabletting pole piece, lithium ion cell electrolyte is required to be injected into the shell before the shell is sealed, the shell is sealed and pressed into a shape by special equipment, a LIR2025 cell manufactured by using a common copper aluminum foil as the positive and negative pole pieces of a current collector can only reach the capacity of 30mAh, but the capacity of the tabletting pole pieces manufactured by the method can reach 50 m.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A sheet pressing type lithium ion battery pole piece is characterized in that: comprises an upper buckling shell (1) and a lower buckling shell (3), wherein a negative pole piece (4), a diaphragm (5) and a positive pole piece (6) are embedded between the upper buckling shell (1) and the lower buckling shell (3), the negative pole piece (4) and the positive pole piece (6) are symmetrically distributed on the upper surface and the lower surface of the diaphragm (5), a circular convex edge is arranged at the edge of the upper buckling shell (1), the outer diameter of the circular convex edge is equal to the inner diameter of the lower buckling shell (3), pressing plates (7) which are uniformly distributed at intervals are fixedly arranged at the edge of the upper surface of the lower buckling shell (3), a sealing rubber ring (2) is placed on the upper surface of the circular convex edge, the thickness of the negative pole piece (4) is 0.5-3 mm, the thickness of the positive pole piece (6) is 0.5-3 mm, and the diameter ratio of the negative pole piece (4) of the diaphragm (5) is 1-2 mm larger, the diameter of the negative pole piece (4) is 0-1 mm larger than that of the positive pole piece (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020362513.8U CN211828840U (en) | 2020-03-20 | 2020-03-20 | Tabletting type lithium ion battery pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020362513.8U CN211828840U (en) | 2020-03-20 | 2020-03-20 | Tabletting type lithium ion battery pole piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211828840U true CN211828840U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020362513.8U Active CN211828840U (en) | 2020-03-20 | 2020-03-20 | Tabletting type lithium ion battery pole piece |
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| CN (1) | CN211828840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113795955A (en) * | 2021-03-30 | 2021-12-14 | 宁德新能源科技有限公司 | Battery and electronic device using same |
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2020
- 2020-03-20 CN CN202020362513.8U patent/CN211828840U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113795955A (en) * | 2021-03-30 | 2021-12-14 | 宁德新能源科技有限公司 | Battery and electronic device using same |
| WO2022205011A1 (en) * | 2021-03-30 | 2022-10-06 | 宁德新能源科技有限公司 | Battery and electronic device applying same |
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