CN215220765U - High-temperature-resistant button battery - Google Patents
High-temperature-resistant button battery Download PDFInfo
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- CN215220765U CN215220765U CN202120230023.7U CN202120230023U CN215220765U CN 215220765 U CN215220765 U CN 215220765U CN 202120230023 U CN202120230023 U CN 202120230023U CN 215220765 U CN215220765 U CN 215220765U
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- insulating diaphragm
- heat conducting
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- metal shell
- temperature
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Abstract
The invention relates to the technical field of batteries. The high-temperature-resistant button battery comprises a sealing assembly and an electric core assembly, wherein the sealing assembly comprises an anode metal shell, a sealing ring and a cathode metal shell matched with the anode metal shell, and the anode metal shell, the cathode metal shell and the sealing ring are matched to form a closed space; the battery cell assembly is arranged in the closed space and comprises a positive plate electrically connected with the positive metal shell, a negative plate electrically connected with the negative metal shell and an insulating diaphragm arranged between the positive plate and the negative plate; a metal heat conducting sheet attached to the insulating diaphragm is arranged between the insulating diaphragm and the positive plate, and the edge of the metal heat conducting sheet is connected to the sealing assembly. The heat of the insulating diaphragm is guided to the sealing assembly through the metal heat conducting sheet, so that the influence of high temperature on the insulating diaphragm is reduced; and because the metal heat dissipation characteristic is fast, the metal conducting strip guides the heat of the insulating diaphragm to the sealing assembly and further accelerates the heat dissipation.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a high-temperature-resistant button battery.
Background
The button cell is also called button cell, which is a cell with the overall dimension like a small button, generally speaking, the diameter is larger, the thickness is thinner, the button cell is in a flat structure, the button cell has the advantages of small volume, wide application in various miniature electronic products, high practicability, stable discharge voltage, wide working temperature range, long storage life and the like, and is widely applied to backup power supplies of various electronic products, such as computer mainboards, electronic watches, electronic dictionaries, electronic scales, remote controllers, electric toys, cardiac pacemakers, electronic hearing aids, counters, cameras and the like, the button cell generally comprises an anode, a cathode, an electric core, electrolyte and the like, the appearance of the button cell is made of stainless steel materials, and comprises an anode stainless steel shell and a cathode stainless steel shell, a sealing ring is arranged between the anode stainless steel shell and the cathode stainless steel shell for insulation, and the sealing ring plays a role in insulation, the electrolyte can be prevented from leaking, the sealing effect is achieved, a battery core is contained in the battery, the battery core generally comprises a positive plate, a negative plate and an insulating diaphragm, and the battery core packaged in the positive stainless steel shell and the negative stainless steel shell is soaked or soaked by the electrolyte.
In actual production life, the button cell usually generates higher temperature during operation, such as the button cell used on a computer motherboard. In the conventional button type lithium manganese battery structure, insulation treatment is carried out between a positive electrode and a negative electrode through a layer of insulation diaphragm, the insulation diaphragm can generate melting or softening phenomenon under the high-temperature condition, the electrolyte of the battery can generate vaporization phenomenon under the high-temperature condition, and electrolyte steam can leak from the softened or melted sealing position, so that the battery is weightless and the performance is reduced.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant button cell, aiming at overcoming the defects in the prior art.
In order to achieve the purpose, the high-temperature-resistant button battery comprises a sealing assembly and a battery core assembly, wherein the sealing assembly comprises an anode metal shell, a sealing ring and a cathode metal shell matched with the anode metal shell, and the anode metal shell, the cathode metal shell and the sealing ring are matched to form a closed space; the battery cell assembly is arranged in the closed space and comprises a positive plate electrically connected with the positive metal shell, a negative plate electrically connected with the negative metal shell and an insulating diaphragm arranged between the positive plate and the negative plate; a metal heat conducting sheet attached to the insulating diaphragm is arranged between the insulating diaphragm and the positive plate, and the edge of the metal heat conducting sheet is connected to the sealing assembly.
As a further aspect of the present invention: the metal heat conducting sheet is used for isolating electrolyte and preventing the electrolyte from contacting the insulating diaphragm.
As a further aspect of the present invention: and a heat dissipation paste is arranged between the insulating diaphragm and the metal heat conducting fin.
As a further aspect of the present invention: the material of the insulating diaphragm comprises polyetherimide and polytetrafluoroethylene.
As a further aspect of the present invention: and a second metal heat conducting sheet attached to the insulating diaphragm is arranged between the insulating diaphragm and the negative plate, the edge of the second metal heat conducting sheet is connected with the sealing assembly, and a heat dissipating paste is arranged between the insulating diaphragm and the second metal heat conducting sheet.
As a further aspect of the present invention: the sealing ring is a rubber modified polypropylene high-temperature resistant sealing ring.
As a further aspect of the present invention: and a conductive net for increasing the conductivity of the anode is arranged between the anode plate and the metal heat conducting plate.
The invention has the beneficial effects that:
a metal heat conducting sheet attached to the insulating diaphragm is arranged between the insulating diaphragm and the positive plate, the edge of the metal heat conducting sheet is connected with the sealing assembly, and heat of the insulating diaphragm is guided to the sealing assembly through the metal heat conducting sheet, so that the influence of high temperature on the insulating diaphragm is reduced; and because the metal heat dissipation characteristic is fast, the metal conducting strip guides the heat of the insulating diaphragm to the sealing assembly and further accelerates the heat dissipation.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
The reference numerals include:
1-positive metal shell 2-negative metal shell 3-positive plate 4-negative plate
5-sealing ring 6-insulating diaphragm 7-metal heat conducting fin
8-second metal heat-conducting fin 9-heat-dissipating paste.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in fig. 1, in the embodiment of the present invention, a high temperature resistant button battery includes a sealing assembly and a battery assembly, the sealing assembly includes an anode metal casing 1, a sealing ring 5 and a cathode metal casing 2 matched with the anode metal casing 1, the cathode metal casing 2 and the sealing ring 5 are matched to form a closed space; the battery cell assembly is arranged in the closed space and comprises a positive plate 3 electrically connected with the positive metal shell 1, a negative plate 4 electrically connected with the negative metal shell 2 and an insulating diaphragm 6 arranged between the positive plate 3 and the negative plate 4; a metal heat conducting sheet 7 attached to the insulating diaphragm 6 is arranged between the insulating diaphragm 6 and the positive plate 3, and the edge of the metal heat conducting sheet 7 is connected to the sealing assembly. When the insulating diaphragm 6 and the positive plate 3 work, the metal heat conducting sheet 7 attached to the insulating diaphragm 6 is arranged between the insulating diaphragm 6 and the positive plate 3, the edge of the metal heat conducting sheet 7 is connected with the sealing assembly, heat of the insulating diaphragm 6 is guided to the sealing assembly through the metal heat conducting sheet 7, and the influence of high temperature on the insulating diaphragm 6 is reduced; and due to the characteristic that the metal dissipates heat quickly, the heat dissipation of the heat of the insulating diaphragm 6 is further accelerated by the metal heat conducting fins 7 to guide the heat of the insulating diaphragm 6 to the sealing assembly.
Further, the metal heat conduction sheet 7 is used for isolating the electrolyte and preventing the electrolyte from contacting the insulating diaphragm 6. The metal heat conducting sheet 7 isolates the electrolyte, so that water vapor generated by vaporization of the electrolyte under a high-temperature condition cannot directly contact with the insulating diaphragm 6, and further the influence of high temperature on the insulating diaphragm 6 is further reduced.
Further, a heat dissipation paste 9 is arranged between the insulating diaphragm 6 and the metal heat conducting sheet 7. The influence of high temperature on the insulating diaphragm 6 is further reduced by the heat dissipation effect of the heat dissipation paste 9.
Further, the material of the insulating membrane 6 includes polyetherimide and polytetrafluoroethylene. The polyetherimide and the polytetrafluoroethylene have the characteristics of high temperature resistance, insulation, corrosion resistance and the like, and the high temperature resistance material performance of the insulating diaphragm 6 is enhanced.
In a further scheme, a second metal heat conducting sheet 8 attached to the insulating diaphragm 6 is arranged between the insulating diaphragm 6 and the negative plate 4, the edge of the second metal heat conducting sheet 8 is connected to the sealing assembly, and a heat dissipating paste 9 is arranged between the insulating diaphragm 6 and the second metal heat conducting sheet 8. Further strengthen heat conduction effect and radiating effect to insulating diaphragm 6, and then further reduce high temperature to the influence of insulating diaphragm 6.
In a further scheme, the sealing ring 5 is a rubber modified polypropylene high-temperature resistant sealing ring 5. The high-temperature-resistant material performance of the sealing ring 5 is enhanced through the high-temperature-resistant characteristic of the rubber modified polypropylene.
In a further scheme, a conductive net for increasing the conductivity of the anode is arranged between the anode plate 3 and the metal heat-conducting plate 7. By increasing the conductivity of the positive electrode, the internal resistance of the battery is reduced, the power loss of the battery is reduced, and the effect of reducing heating is achieved.
In conclusion, the present invention has the above-mentioned excellent characteristics, so that it can be used to enhance the performance of the prior art and has practicability, and becomes a product with practical value.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (6)
1. The high-temperature-resistant button battery comprises a sealing assembly and an electric core assembly, wherein the sealing assembly comprises an anode metal shell, a sealing ring and a cathode metal shell matched with the anode metal shell, and the anode metal shell, the cathode metal shell and the sealing ring are matched to form a closed space;
the battery cell assembly is arranged in the closed space and comprises a positive plate electrically connected with the positive metal shell, a negative plate electrically connected with the negative metal shell and an insulating diaphragm arranged between the positive plate and the negative plate;
the method is characterized in that: a metal heat conducting sheet attached to the insulating diaphragm is arranged between the insulating diaphragm and the positive plate, and the edge of the metal heat conducting sheet is connected to the sealing assembly.
2. The high-temperature-resistant button cell according to claim 1, characterized in that: the metal heat conducting sheet is used for isolating electrolyte and preventing the electrolyte from contacting the insulating diaphragm.
3. The high-temperature-resistant button cell according to claim 1, characterized in that: and a heat dissipation paste is arranged between the insulating diaphragm and the metal heat conducting fin.
4. The high-temperature-resistant button cell according to claim 1, characterized in that: and a second metal heat conducting sheet attached to the insulating diaphragm is arranged between the insulating diaphragm and the negative plate, the edge of the second metal heat conducting sheet is connected with the sealing assembly, and a heat dissipating paste is arranged between the insulating diaphragm and the second metal heat conducting sheet.
5. The high-temperature-resistant button cell according to claim 1, characterized in that: the sealing ring is a rubber modified polypropylene high-temperature resistant sealing ring.
6. The high-temperature-resistant button cell according to claim 1, characterized in that: and a conductive net for increasing the conductivity of the anode is arranged between the anode plate and the metal heat conducting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120230023.7U CN215220765U (en) | 2021-01-27 | 2021-01-27 | High-temperature-resistant button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120230023.7U CN215220765U (en) | 2021-01-27 | 2021-01-27 | High-temperature-resistant button battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215220765U true CN215220765U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120230023.7U Active CN215220765U (en) | 2021-01-27 | 2021-01-27 | High-temperature-resistant button battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN215220765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024099189A1 (en) * | 2022-11-07 | 2024-05-16 | 南京泉峰科技有限公司 | Battery pack and charging combination |
-
2021
- 2021-01-27 CN CN202120230023.7U patent/CN215220765U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024099189A1 (en) * | 2022-11-07 | 2024-05-16 | 南京泉峰科技有限公司 | Battery pack and charging combination |
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