CN217641462U - Lithium ion button battery - Google Patents
Lithium ion button battery Download PDFInfo
- Publication number
- CN217641462U CN217641462U CN202221437114.9U CN202221437114U CN217641462U CN 217641462 U CN217641462 U CN 217641462U CN 202221437114 U CN202221437114 U CN 202221437114U CN 217641462 U CN217641462 U CN 217641462U
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- lithium
- sheet
- shell
- conductive reinforcing
- metal lithium
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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 relates to a lithium ion button cell, include the casing and install at inside positive plate, diaphragm, metal lithium piece, electrically conductive reinforcing piece and the spring leaf of casing in proper order, the casing includes positive plate shell and negative pole shell, positive plate shell with negative pole shell fixed connection, the metal lithium piece with electrically conductive reinforcing piece fixed connection. The utility model discloses can effectively strengthen the intensity of metal lithium piece, solve the lithium piece and taken place the problem crooked, roll over, that the waste rate is high, improve battery electrical property uniformity.
Description
Technical Field
The utility model belongs to the technical field of the new forms of energy technique and specifically relates to a lithium ion button cell is related to.
Background
The cathode commonly used for assembling and researching the lithium ion button battery is a metal lithium sheet, and the assembling method of the button battery comprises the following steps: stacking the button cells in the glove box in the inert atmosphere from bottom to top in sequence, respectively dripping a certain amount of electrolyte before and after placing the diaphragm, completing packaging under the mechanical pressure of a tabletting mold, and disassembling and scrapping the button cells after the button cells are used up.
Because the metallic lithium piece is soft, the assembly process is easy to bend and roll, the metallic lithium piece is scrapped, the battery performance is reduced or the tested electrical performance data has deviation, a large amount of residual lithium metal is flammable after the scrapped button battery is disassembled, proper treatment is needed, and the time and labor are consumed for treating waste lithium.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a lithium ion button cell that structural stability is higher and be convenient for scrap and handle to the not enough of prior art existence.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a lithium ion button cell, includes the casing and installs positive plate, diaphragm, metal lithium piece, electrically conductive reinforcing piece and the spring leaf inside the casing in proper order, the casing includes positive plate shell and negative pole shell, positive plate shell with negative pole shell fixed connection, the metal lithium piece with electrically conductive reinforcing piece fixed connection.
By adopting the technical scheme, the conductive reinforcing sheet is arranged at the bottom of the metal lithium sheet, and the strength of the combined metal lithium sheet is higher than that of a single metal lithium sheet, so that the problems of bending and rolling of the metal lithium sheet can be solved, and the consistency of the electrical properties of the battery is improved; in addition, the invention reduces the using amount of lithium sheets, thereby reducing the cost of the button battery and the difficulty of processing waste metal lithium after disassembly.
The present invention in a preferred embodiment can be further configured to: the diameter of the metal lithium sheet is not larger than that of the conductive reinforcing sheet, and the metal lithium sheet is completely covered by the conductive reinforcing sheet.
By adopting the technical scheme, the area of the conductive reinforcing sheet is not smaller than that of the metal lithium sheet, and the structural strength of the metal lithium sheet can be further improved.
The present invention may be further configured in a preferred embodiment as: the connection mode between the metal lithium sheet and the conductive reinforcing sheet adopts one or more of conductive adhesive bonding, high-temperature fusion, mechanical pressing, welding and the like.
Through adopting above-mentioned technical scheme, this connected mode can guarantee the stability that metal lithium piece and electrically conductive reinforcing piece are connected to guarantee the structural strength of metal lithium piece.
The present invention may be further configured in a preferred embodiment as: the conductive enhanced sheet material is made of conductive materials, including but not limited to stainless steel, copper alloy, nickel alloy, titanium alloy, magnesium alloy, graphite and graphene.
By adopting the technical scheme, the stainless steel, the copper alloy, the nickel alloy, the titanium alloy, the magnesium alloy, the graphite and the graphene not only have good conductivity, but also have elasticity.
The present invention may be further configured in a preferred embodiment as: a gasket is arranged between the conductive reinforcing sheet and the spring sheet.
Through adopting above-mentioned technical scheme, the gasket can improve the stability of being connected between electrically conductive reinforcing piece and the spring leaf.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the utility model discloses in through the electrically conductive reinforcing piece that sets up in metal lithium piece bottom, can effectively strengthen the intensity of metal lithium piece, solved the problem that metal lithium piece takes place to buckle, roll over, improved battery electrical property uniformity;
2. the utility model can freely adjust the thickness of the metal lithium sheet according to the requirement to match the button batteries with different capacities, thereby reducing the waste of exceeding the capacity and reducing the cost of the button batteries;
3. the utility model provides the high quantity that has reduced the metal lithium piece has reduced button cell and has disassembled the degree of difficulty and the cost of the useless lithium metal of aftertreatment.
Drawings
In order that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings
Fig. 1 is an overall structural schematic diagram of the present embodiment.
The reference numbers in the drawings are:
1. a positive electrode case; 2. a negative electrode case; 3. a positive plate; 4. a diaphragm; 5. a metallic lithium plate; 6. a conductive reinforcing sheet; 7. a gasket; 8. a spring plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a lithium ion button cell, its characterized in that: the lithium battery comprises a shell, a positive plate 3, a diaphragm 4, a metal lithium plate 5, a conductive reinforcing plate 6 and a spring piece 8, wherein the positive plate 3, the diaphragm 4, the metal lithium plate 5 and the spring piece 8 are sequentially arranged inside the shell, the shell comprises a positive shell 1 and a negative shell 2, the positive shell 1 is fixedly connected with the negative shell 2, the metal lithium plate 5 is fixedly connected with the conductive reinforcing plate 6, the conductive reinforcing plate 6 is arranged at the bottom of the metal lithium plate 5, the stability between the positive plate and the negative shell is higher, the problems of bending and curling of the metal lithium plate 5 can be solved, the consistency of the electrical performance of the battery is improved, in addition, the difficulty and the cost for processing waste metal lithium after the button battery is disassembled are conveniently reduced, in addition, the gram capacity of the lithium plate is larger (3861 mAh/g), the capacity range of the common button battery is enough for using the lithium plate with the thickness of 5 mu m, but is limited by the strength and the processing technology, the negative electrode of the lithium plate is at least 300 mu m thick at present, the capacity range of the button battery is already exceeded, the capacity range of the button battery by about 60 times of the surplus, namely, 98% of the lithium metal is wasted, and the capacity of the button battery is greatly wasted, therefore, the lithium plate can be freely reduced by the thickness of the button 5, and the different battery, and the waste of the battery is reduced.
The diameter of the metal lithium sheet 5 is not larger than that of the conductive reinforcing sheet 6, the metal lithium sheet is completely covered by the conductive reinforcing sheet 6, the area of the conductive reinforcing sheet 6 is not smaller than that of the metal lithium sheet 5, and the structural strength of the metal lithium sheet 5 can be further improved.
The connection mode between the metal lithium sheet 5 and the conductive reinforcing sheet 6 adopts one or more combinations of conductive adhesive bonding, high-temperature fusion, mechanical pressing, welding and the like, and the connection mode can ensure the connection stability of the metal lithium sheet 5 and the conductive reinforcing sheet 6, so that the structural strength of the metal lithium sheet 5 is ensured.
The conductive reinforcing sheet 6 is made of a conductive material, including but not limited to stainless steel, copper alloy, nickel alloy, titanium alloy, magnesium alloy, graphite, graphene, stainless steel, copper alloy, nickel alloy, titanium alloy, magnesium alloy, graphite, and graphene.
| Name of Material | Modulus of elasticity Gpa |
| Stainless steel | 210 |
| Copper alloy | 110 |
| Nickel alloy | 207 |
| Titanium alloy | 102 |
| Magnesium alloy | 45 |
| Graphite | 34 |
| Graphene | 250 |
| Lithium metal | 12 |
TABLE 1
As shown in table 1, the smaller the elastic modulus of the material, the easier the material is to deform, and it can be seen that the elastic modulus of lithium metal is very low, while the elastic modulus of the negative electrode of the button cell is significantly increased by the improvement of the present technology.
Be provided with gasket 7 between electrically conductive reinforcing piece 6 and the spring leaf 8, gasket 7 can improve the stability of being connected between electrically conductive reinforcing piece 6 and the spring leaf 8.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A lithium ion button cell is characterized in that: the lithium ion battery comprises a shell, and a positive plate (3), a diaphragm (4), a metal lithium plate (5), a conductive reinforcing plate (6) and a spring piece (8) which are sequentially installed inside the shell, wherein the shell comprises a positive plate shell (1) and a negative plate shell (2), the positive plate shell (1) is fixedly connected with the negative plate shell (2), and the metal lithium plate (5) is fixedly connected with the conductive reinforcing plate (6).
2. The lithium ion button cell of claim 1, wherein: the diameter of the metal lithium sheet (5) is not larger than that of the conductive reinforcing sheet (6), and the metal lithium sheet is completely covered by the conductive reinforcing sheet (6).
3. The lithium-ion button cell of claim 2, wherein: the lithium metal sheet (5) and the conductive reinforcing sheet (6) are connected in one or more of conductive adhesive bonding, high-temperature fusion, mechanical pressing and welding.
4. A lithium-ion button cell according to claim 3, wherein: the conductive reinforcing sheet (6) is made of a conductive material, and comprises stainless steel, copper alloy, nickel alloy, titanium alloy, magnesium alloy, graphite and graphene.
5. The lithium ion button cell of claim 1, wherein: a gasket (7) is arranged between the conductive reinforcing sheet (6) and the spring sheet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221437114.9U CN217641462U (en) | 2022-06-09 | 2022-06-09 | Lithium ion button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221437114.9U CN217641462U (en) | 2022-06-09 | 2022-06-09 | Lithium ion button battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217641462U true CN217641462U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221437114.9U Active CN217641462U (en) | 2022-06-09 | 2022-06-09 | Lithium ion button battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217641462U (en) |
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2022
- 2022-06-09 CN CN202221437114.9U patent/CN217641462U/en active Active
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