CN215220765U - High-temperature-resistant button battery - Google Patents
High-temperature-resistant button battery Download PDFInfo
- Publication number
- 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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- CN
- China
- Prior art keywords
- insulating diaphragm
- metal
- temperature
- heat conducting
- conducting sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 71
- 239000002184 metal Substances 0.000 claims abstract description 71
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000017525 heat dissipation Effects 0.000 claims abstract description 10
- 239000003792 electrolyte Substances 0.000 claims description 13
- -1 polypropylene Polymers 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 210000003850 cellular structure Anatomy 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004697 Polyetherimide Substances 0.000 description 3
- 229920001601 polyetherimide Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
本发明涉及电池技术领域。耐高温的纽扣电池，包括密封组件和电芯组件，密封组件包括正极金属壳体、密封圈和与正极金属壳体相匹配的负极金属壳体，正极金属壳体、负极金属壳体和密封圈相配合形成密闭空间；电芯组件设置在密闭空间内，电芯组件包括与正极金属壳体电连接的正极片和与负极金属壳体电连接的负极片以及设置在正极片与负极片之间的绝缘隔膜；绝缘隔膜与正极片之间设置有相贴于绝缘隔膜的金属导热片，金属导热片的边沿相接于密封组件。通过金属导热片将绝缘隔膜的热量导向密封组件，降低高温对绝缘隔膜的影响；且由于金属散热快的特性，金属导热片将绝缘隔膜的热量导向密封组件也更进一步的加快热量的散发。
The present invention relates to the technical field of batteries. A high-temperature-resistant button battery, including a sealing component and a cell component, the sealing component includes a positive metal casing, a sealing ring and a negative metal casing matching the positive metal casing, the positive metal casing, the negative metal casing and the sealing ring A closed space is formed by matching; the battery core assembly is arranged in the closed space, and the battery core assembly includes a positive electrode piece electrically connected with the positive metal shell and a negative electrode piece electrically connected with the negative electrode metal shell, and is arranged between the positive electrode piece and the negative electrode piece. The insulating diaphragm is provided between the insulating diaphragm and the positive electrode sheet, and a metal heat-conducting sheet attached to the insulating diaphragm is arranged, and the edge of the metal heat-conducting sheet is connected to the sealing component. The heat of the insulating diaphragm is guided to the sealing assembly through the metal heat-conducting sheet to reduce the impact of high temperature on the insulating diaphragm; and due to the fast heat dissipation of the metal, the metal heat-conducting sheet directs the heat of the insulating diaphragm to the sealing assembly to further accelerate 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 |
Family
ID=79438708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120230023.7U Expired - Fee Related CN215220765U (en) | 2021-01-27 | 2021-01-27 | High-temperature-resistant button battery |
Country Status (1)
| Country | Link |
|---|---|
| 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 not_active Expired - Fee Related
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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211217 |