CN213483809U - High-safety button type lithium ion battery - Google Patents
High-safety button type lithium ion battery Download PDFInfo
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- CN213483809U CN213483809U CN202022533288.2U CN202022533288U CN213483809U CN 213483809 U CN213483809 U CN 213483809U CN 202022533288 U CN202022533288 U CN 202022533288U CN 213483809 U CN213483809 U CN 213483809U
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- phase
- lithium ion
- ion battery
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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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Abstract
The utility model relates to a high security knot formula lithium ion battery, including positive pole shell (1) and negative pole shell (2), positive pole shell (1) with negative pole shell (2) constitute inside cavity be equipped with battery roll core, its characterized in that in the inside cavity: still be equipped with phase transition cooling material block (6) in the inside cavity, when the temperature of inside cavity was higher than phase transition temperature, phase transition cooling material block (6) absorb battery roll core heat and change into liquid by the solid-state, are full of between the positive negative pole, keep apart positive negative pole and prevent that the abnormal reaction further worsens.
Description
Technical Field
The utility model relates to a knot formula lithium ion battery especially relates to a high security knot formula lithium ion battery.
Background
With the wider application of intelligent wearable products, people have wider and wider requirements on small-volume lithium ion button type secondary rechargeable batteries. Button cell is more and more applied to intelligence wearing product, for example earphone etc. also more and more high to the requirement of battery, and the wearing product gives other people better use experience in order to reach the design requirement. The improvement of the safety of the button cell battery by demanding higher requirements on the battery is a major problem to be solved by the button cell battery at present.
In the current button cell, once the internal short circuit or the abuse of the cell occurs, the internal temperature of the cell rises sharply, the internal pressure of the cell rises, and the cell has explosion risks, thus threatening the personal safety of users.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a high security button lithium ion battery, the technical problem of its solution is that present button battery exists the temperature and risees, explosion risk even under abnormal quoting.
In order to solve the technical problem existing in the above, the utility model discloses a following scheme:
the utility model provides a high security knot formula lithium ion battery, includes anodal shell (1) and negative pole shell (2), anodal shell (1) with negative pole shell (2) constitute inside cavity be equipped with the battery and roll up the core in the inside cavity, still be equipped with phase transition cooling material piece (6) in the inside cavity.
Preferably, the material of the phase-change cooling material block (6) is normal paraffin wax.
Preferably, the material of the phase-change cooling material block (6) is one or a mixture of several of an organic phase-change material and an inorganic phase-change material.
Preferably, the phase-change temperature of the phase-change cooling material block (6) is 60-80 ℃.
Preferably, the battery roll core comprises a negative current collector (3), a lamination body (4) and a positive current collector (5), wherein one end of the lamination body (4) is connected with the negative current collector (3), and the other end of the lamination body (4) is connected with the positive current collector (5).
Preferably, the positive electrode shell (1) is provided with a clamping groove, and a part of the negative electrode shell (2) extends into the clamping groove for fixing.
A heat dissipation method of a high-safety button lithium ion battery comprises the following steps: when the battery roll core is abused to cause the abnormal reaction of the inner cavity of the button lithium ion battery, and the temperature of the inner cavity is higher than the phase-change temperature, the phase-change cooling material block (6) absorbs the heat of the battery roll core and is changed from a solid state into a liquid state to fill the space between the positive electrode and the negative electrode, and the positive electrode and the negative electrode are isolated to prevent the abnormal reaction from further deteriorating.
Preferably, the phase-change temperature of the phase-change cooling material block (6) is 60-80 ℃.
Preferably, when the temperature of the inner cavity is lower than the phase-change temperature, the phase-change temperature-reducing material block (6) is changed from a liquid state to a solid state,
compared with the button lithium ion battery in the prior art, the button lithium ion battery with high safety has the following beneficial effects:
the utility model discloses roll up the core when the battery and be misused and lead to inside abnormal reaction to take place, when inside temperature is higher than phase transition temperature, phase transition material absorbs electric core heat, changes into liquid, is full of between the positive negative pole, keeps apart positive negative pole and prevents that the abnormal reaction further worsens.
Drawings
FIG. 1: the utility model discloses high security knot formula lithium ion battery's schematic structure.
Description of reference numerals:
1-positive electrode shell; 2-negative electrode shell; 3-negative current collector; 4-lamination body; 5-positive current collector; 6-cooling material.
Detailed Description
The present invention will be further explained with reference to fig. 1:
as shown in fig. 1, a high-safety button lithium ion battery comprises a positive shell 1 and a negative shell 2, wherein the positive shell 1 and the negative shell 2 form an internal cavity, a battery roll core is arranged in the internal cavity, a phase-change cooling material block 6 is further arranged in the internal cavity, and when the temperature of the internal cavity is higher than the phase-change temperature, the phase-change cooling material block 6 absorbs the heat of the battery roll core and is changed from a solid state into a liquid state, so that the solid state is filled between the positive and negative electrodes, and the positive and negative electrodes are isolated to prevent the abnormal.
The material of the phase-change cooling material block 6 is normal paraffin wax. Or the phase-change cooling material block 6 is made of an organic phase-change material or an inorganic phase-change material.
The phase-change temperature of the phase-change cooling material block 6 is 60-80 ℃.
The battery roll core comprises a negative current collector 3, a laminated body 4 and a positive current collector 5, wherein one end of the laminated body 4 is connected with the negative current collector 3, and the other end of the laminated body 4 is connected with the positive current collector 5. The positive electrode shell 1 is provided with a clamping groove, and a part of the negative electrode shell 2 extends into the clamping groove for fixing.
A heat dissipation method of a high-safety button lithium ion battery is characterized in that when a battery roll core is abused, abnormal reaction of an internal cavity of the button lithium ion battery occurs, and the temperature of the internal cavity is higher than a phase-change temperature, a phase-change cooling material block 6 absorbs the heat of the battery roll core, is changed from a solid state to a liquid state, is filled between a positive electrode and a negative electrode, and isolates the positive electrode and the negative electrode to prevent the abnormal reaction from further deteriorating.
When the temperature of the inner cavity is lower than the phase-change temperature, the phase-change cooling material block 6 is changed from a liquid state to a solid state.
The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements of the method concept and the technical solution of the present invention can be made without modification, or the present invention can be directly applied to other occasions without modification, and is within the protection scope of the present invention.
Claims (5)
1. The utility model provides a high security button type lithium ion battery, includes positive pole shell (1) and negative pole shell (2), positive pole shell (1) with negative pole shell (2) constitute inside cavity be equipped with battery roll core, its characterized in that in the inside cavity: a phase-change cooling material block (6) is also arranged in the inner cavity; the battery roll core comprises a negative current collector (3), a laminated sheet body (4) and a positive current collector (5), wherein one end of the laminated sheet body (4) is connected with the negative current collector (3), and the other end of the laminated sheet body (4) is connected with the positive current collector (5).
2. The high-safety button lithium ion battery according to claim 1, characterized in that: the phase-change cooling material block (6) is made of normal paraffin wax.
3. The high-safety button lithium ion battery according to claim 1, characterized in that: the phase-change cooling material block (6) is made of an organic phase-change material or an inorganic phase-change material.
4. The high-safety button lithium ion battery according to claim 1, characterized in that: the phase-change temperature of the phase-change cooling material block (6) is 60-80 ℃.
5. The high safety button lithium ion battery according to any one of claims 1 to 4, wherein: the positive electrode shell (1) is provided with a clamping groove, and one part of the negative electrode shell (2) extends into the clamping groove to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022533288.2U CN213483809U (en) | 2020-11-05 | 2020-11-05 | High-safety button type lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022533288.2U CN213483809U (en) | 2020-11-05 | 2020-11-05 | High-safety button type lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213483809U true CN213483809U (en) | 2021-06-18 |
Family
ID=76354197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022533288.2U Active CN213483809U (en) | 2020-11-05 | 2020-11-05 | High-safety button type lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213483809U (en) |
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2020
- 2020-11-05 CN CN202022533288.2U patent/CN213483809U/en active Active
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