CN201408818Y - Mechanical protection device of lithium ion battery - Google Patents
Mechanical protection device of lithium ion battery Download PDFInfo
- Publication number
- CN201408818Y CN201408818Y CN2009200574231U CN200920057423U CN201408818Y CN 201408818 Y CN201408818 Y CN 201408818Y CN 2009200574231 U CN2009200574231 U CN 2009200574231U CN 200920057423 U CN200920057423 U CN 200920057423U CN 201408818 Y CN201408818 Y CN 201408818Y
- Authority
- CN
- China
- Prior art keywords
- battery
- lithium ion
- ion battery
- membrane switch
- protection device
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 9
- 239000010409 thin film Substances 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 abstract 4
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a mechanical protection device of a lithium ion battery, which comprises a battery body and a protection frame. Besides, a membrane switch is arranged between the outer surface of the battery body and the protection frame, and the membrane switch is fixed via organic adhesive. After being improved, namely being equipped with the membrane switch, the inside of the membrane switch can be switched on to feed signals back to a control circuit when the battery deforms caused by expansion or external force action, thereby cutting off a working circuit and forbidding discharging operation to the battery.
Description
Technical field:
The utility model relates to a kind of protective device of lithium ion battery.
Background technology:
Lithium battery is owing to its high-energy-density, and advantages such as long-life, environmental protection have obtained extensive use at present on various product.Owing to lithium battery structure and the reason of raw material own, must protect it in use, need limit cell voltage when discharging and recharging.Protected mode commonly used at present is that baffle (Protect Circuit Module) is installed on battery; its function comprise to battery overcharge, overdischarge, overcurrent, short-circuit protection; some PCM also have NTC (negative tempperature coefficient thermistor), can realize battery is carried out overtemperature protection by charger or electrical appliance control circuit.Above-mentioned protected mode all is to utilize electronic circuit protection, there is the possibility that lost efficacy in this type of protected mode under some specified conditions, in use damaged expansion such as battery, internal resistance obviously increases, this moment, the battery charging and discharging function was still normal, there is bigger potential safety hazard in the battery that expands in continuing use, danger on fire or blast may occur; In addition, when battery is subjected to the external force effect or influences distortion to occur, when internal structure was impaired, PCM can not effectively protect battery, electrical appliance and user equally.
Summary of the invention:
The purpose of this utility model is in order to overcome the above-mentioned shortcoming of protecting by electronic circuit, a kind of lithium ion battery physical protection device simple in structure, reliable to be provided.
For achieving the above object, the technical scheme that the utility model provides is: a kind of mechanical type protective device of lithium ion battery, include battery body and bearer bar, and between the outer surface of battery body and bearer bar, be provided with thin film switch.
Described thin film switch is fixed by organic gel.
After improving, because the existence of thin film switch, when battery expands or battery when being subjected to the external force effect situation such as distortion to occur, will connect in the thin film switch, give control circuit signal feedback, cut off operating circuit, and forbid battery is discharged and recharged operation with this.
Description of drawings:
Fig. 1 is the structural representation that the utility model thin film switch cooperates with battery body;
Fig. 2 is the A-A cutaway view of Fig. 1.
Embodiment:
Now elaborate the utility model in conjunction with the accompanying drawings:
The lithium ion battery protective device of present embodiment includes battery body 1 and bearer bar 2, is provided with thin film switch 3 between the outer surface of battery body 1 and bearer bar 2, and described thin film switch 3 is fixed by organic gel, makes thin film switch 3 be close to battery surface.
When battery surface deformed, thin film switch 3 also can produce distortion simultaneously, caused thin film switch 3 closed connections, and signal is passed to control circuit, and control circuit cuts off operating circuit, and forbids battery is discharged and recharged operation.
The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by in the protection range of the present utility model.
Claims (2)
1. the mechanical type protective device of a lithium ion battery includes battery body (1) and bearer bar (2), it is characterized in that: be provided with thin film switch (3) between the outer surface of battery body (1) and bearer bar (2).
2. the mechanical type protective device of a kind of lithium ion battery according to claim 1, it is characterized in that: described thin film switch (3) is fixed by organic gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200574231U CN201408818Y (en) | 2009-05-27 | 2009-05-27 | Mechanical protection device of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200574231U CN201408818Y (en) | 2009-05-27 | 2009-05-27 | Mechanical protection device of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408818Y true CN201408818Y (en) | 2010-02-17 |
Family
ID=41679765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200574231U Expired - Fee Related CN201408818Y (en) | 2009-05-27 | 2009-05-27 | Mechanical protection device of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408818Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107431180A (en) * | 2015-09-10 | 2017-12-01 | 株式会社Lg 化学 | Battery pack |
| CN111352035A (en) * | 2018-12-20 | 2020-06-30 | 技嘉科技股份有限公司 | Electronic device capable of detecting battery expansion and battery expansion |
-
2009
- 2009-05-27 CN CN2009200574231U patent/CN201408818Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107431180A (en) * | 2015-09-10 | 2017-12-01 | 株式会社Lg 化学 | Battery pack |
| CN107431180B (en) * | 2015-09-10 | 2020-09-04 | 株式会社Lg 化学 | Battery pack |
| CN111352035A (en) * | 2018-12-20 | 2020-06-30 | 技嘉科技股份有限公司 | Electronic device capable of detecting battery expansion and battery expansion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20180527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |