CN204216110U - Safety valve for lithium ion battery - Google Patents
Safety valve for lithium ion battery Download PDFInfo
- Publication number
- CN204216110U CN204216110U CN201420752368.9U CN201420752368U CN204216110U CN 204216110 U CN204216110 U CN 204216110U CN 201420752368 U CN201420752368 U CN 201420752368U CN 204216110 U CN204216110 U CN 204216110U
- Authority
- CN
- China
- Prior art keywords
- aluminium matter
- lithium ion
- matter pad
- ion battery
- safety valve
- 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
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
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to safety valve for lithium ion battery technical field, is specifically related to a kind of structure simply, convenient and practical and safe and reliable safety valve for lithium ion battery; Comprise aluminium matter pad, aluminium matter pad top is provided with steel upper cover, PTC terminal is provided with between aluminium matter pad and steel upper cover, the internal upper part centre position of steel upper cover is provided with puncture sheet, the position corresponding with aluminium matter pad, puncture sheet bottom is provided with paracentesis area, the thickness of described aluminium matter pad is 0.28cm, and the thickness of described paracentesis area is 0.12 ~ 0.14cm; There is structure simple, reasonable in design, convenient and practical and safe and reliable advantage.
Description
Technical field
The utility model belongs to safety valve for lithium ion battery technical field, is specifically related to a kind of structure simply, convenient and practical and safe and reliable safety valve for lithium ion battery.
Background technology
Lithium battery is widely used in electric tool, illumination, honourable energy storage, electric motor car, toy, instrument and meter, ups back-up source, communication apparatus, Medical Devices and military project lamp field.The security performance of safety valve to lithium ion battery of the lithium battery of such model plays vital effect; Under normal circumstances, when in system because of big current, the reasons such as heat are when producing a large amount of gas, cell internal pressure increases, and by aluminium matter pad upwardly, bend deformation, thus with positive pole cause estranged from, be the further generation that current circuit generation open circuit can suppress battery system heat.But when the further quick charge of battery system, inside battery reaction is violent, and a large amount of gas generates, and easily blasts, causes significant damage to personal safety.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art and provide a kind of structure simple, reasonable in design, convenient and practical, the safe and reliable safety valve for lithium ion battery with effectively ensureing inner pressure of lithium ion battery safety.
The purpose of this utility model is achieved like this: comprise aluminium matter pad, aluminium matter pad top is provided with steel upper cover, PTC terminal is provided with between aluminium matter pad and steel upper cover, the internal upper part centre position of steel upper cover is provided with puncture sheet, the position corresponding with aluminium matter pad, puncture sheet bottom is provided with paracentesis area, the thickness of described aluminium matter pad is 0.28cm, and the thickness of described paracentesis area is 0.12 ~ 0.14cm.Described steel upper cover is structure as a whole with puncture sheet.Described aluminium matter pad and paracentesis area are structure as a whole.The thickness of described paracentesis area is preferably 0.14cm.
According to the safety valve for lithium ion battery that such scheme is made, by arranging puncture sheet and paracentesis area, when cell internal pressure increases, upwardly, after the deformation that bends, puncture sheet punctures the paracentesis area on aluminium matter pad to aluminium matter pad, the pressure of inside battery is discharged rapidly, thus play the object ensureing inner pressure of lithium ion battery safety, there is structure simple, reasonable in design, convenient and practical and safe and reliable advantage.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, the utility model comprises aluminium matter pad 1, aluminium matter pad 1 top is provided with steel upper cover 2, PTC terminal 3 is provided with between aluminium matter pad 1 and steel upper cover 2, the internal upper part centre position of steel upper cover 2 is provided with puncture sheet 4, the position corresponding with aluminium matter pad 1, puncture sheet 4 bottom is provided with paracentesis area 5, and the thickness of described aluminium matter pad 1 is 0.28cm, and the thickness of described paracentesis area 5 is 0.12 ~ 0.14cm.Described steel upper cover 2 is structure as a whole with puncture sheet 4.Described aluminium matter pad 1 and paracentesis area 5 are structure as a whole.The thickness of described paracentesis area 5 is 0.14cm.
When cell internal pressure is normal, the utility model does not affect the normal use of battery, when cell internal pressure occurs abnormal, namely cell internal pressure increases, now aluminium matter pad 1 upwardly, and bend deformation, and the puncture sheet 4 that steel upper cover 2 is wholely set punctures the paracentesis area 5 on aluminium matter pad 1, pressure release is carried out to inside battery, thus ensures the pressure security of inside lithium ion cell.For eliminating the gas generated fast in battery system, inside battery pressure is made to maintain within a safe range, when pressure reaches certain critical value, aluminium matter pad 1 deforms, for ensureing that puncture sheet 4 can puncture paracentesis area 5 accurately, therefore the thickness of paracentesis area 5 is set to 0.14cm.Structure of the present utility model is particularly useful for the safety valve of 26650 lithium ion batteries.
Claims (4)
1. a safety valve for lithium ion battery, comprise aluminium matter pad (1), it is characterized in that: aluminium matter pad (1) top is provided with steel upper cover (2), PTC terminal (3) is provided with between aluminium matter pad (1) and steel upper cover (2), the internal upper part centre position of steel upper cover (2) is provided with puncture sheet (4), the position corresponding with aluminium matter pad (1), puncture sheet (4) bottom is provided with paracentesis area (5), the thickness of described aluminium matter pad (1) is 0.28cm, and the thickness of described paracentesis area (5) is 0.12 ~ 0.14cm.
2. safety valve for lithium ion battery according to claim 1, is characterized in that: described steel upper cover (2) is structure as a whole with puncture sheet (4).
3. safety valve for lithium ion battery according to claim 1, is characterized in that: described aluminium matter pad (1) and paracentesis area (5) are structure as a whole.
4. safety valve for lithium ion battery according to claim 1, is characterized in that: the thickness of described paracentesis area (5) is 0.14cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420752368.9U CN204216110U (en) | 2014-11-26 | 2014-11-26 | Safety valve for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420752368.9U CN204216110U (en) | 2014-11-26 | 2014-11-26 | Safety valve for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216110U true CN204216110U (en) | 2015-03-18 |
Family
ID=52984757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420752368.9U Expired - Fee Related CN204216110U (en) | 2014-11-26 | 2014-11-26 | Safety valve for lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216110U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10103371B2 (en) | 2015-12-25 | 2018-10-16 | Industrial Technology Research Institute | Actuating structure of battery safety valve |
-
2014
- 2014-11-26 CN CN201420752368.9U patent/CN204216110U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10103371B2 (en) | 2015-12-25 | 2018-10-16 | Industrial Technology Research Institute | Actuating structure of battery safety valve |
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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: 20150318 Termination date: 20151126 |