CN2779188Y - Explosion-proof valve - Google Patents
Explosion-proof valve Download PDFInfo
- Publication number
- CN2779188Y CN2779188Y CN 200420085791 CN200420085791U CN2779188Y CN 2779188 Y CN2779188 Y CN 2779188Y CN 200420085791 CN200420085791 CN 200420085791 CN 200420085791 U CN200420085791 U CN 200420085791U CN 2779188 Y CN2779188 Y CN 2779188Y
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- CN
- China
- Prior art keywords
- battery
- pressure
- proof valve
- utility
- model
- 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
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to a novel explosion-proof valve. A casing is provided with two tails which are connected with Y-shaped denting marks. The utility model has the effects that when the temperature of a battery rises, a part of gas which is generated in the process of activation in the battery is expanded, the pressure in the battery is increased and the mark ruptures and releases the gas when the pressure reaches certain degree moment, the novel explosion-proof valve consequently ensures that the battery does not explode. The pressure of the inner side of the battery is born by the utility model and reaches 0.8 to 1.2 MPa. A gas releasing valve is opened to perform the function of pressure release.
Description
Technical field
The utility model belongs to the lithium cell flameproof apparatus, particularly a kind of new type explosion proof valve.
Background technique
Because advantages such as lithium ion battery has the voltage height, capacity is big, volume is little, light weight, and operating temperature range is wide.High-capacity lithium-ion power battery research is increasingly extensive, yet the Security of lithium ion battery is restricting the electrokinetic cell industrialization process always.Lithium ion battery mainly adopts indentation, modes such as weldering nickel foil etc. to make bleed valve now, and this product is exactly the safety problem that may occur by improving indentation shape and position to prevent that inner pressure of battery is too high.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of new type explosion proof valve is provided.The rupture valve of special processing is to prevent that inner pressure of battery is too high and the safety problem that may occur.
The technical solution of the utility model is:
A kind of new type explosion proof valve is characterized in that: have two lower margins to connect the indentation trace of Y word shape on housing.
The utility model effect is:
Use this new type explosion proof valve, when battery heated up, the portion gas that is produced in the inside battery activation process expanded, and inner pressure of battery strengthens, and indentation broke when pressure acquired a certain degree, venting, thus guarantee that battery does not explode.This product bear cell internal pressure when reaching 0.8～1.2Mpa, open bleed valve and can play the pressure release effect.
Description of drawings.
Fig. 1 is a kind of new type explosion proof valve plan view
Fig. 2 is a kind of new type explosion proof valve side view
Figure is a kind of new type explosion proof valve schematic partial sectional view
Specific embodiment
Housing 1 surperficial indentation shape is connected the indentation trace 2 of Y word shape by two lower margins.When battery heated up, the portion gas that is produced in the inside battery activation process expanded, and inner pressure of battery strengthens, and indentation broke when pressure acquired a certain degree, venting, thus guarantee that battery does not explode.This product bear cell internal pressure when reaching 0.8～1.2Mpa, open bleed valve and can play the pressure release effect.As shown in the figure, indentation is in battery surface one side, and the battery table area is bigger, when internal temperature of battery rises rapidly, and housing central position pressurized maximum, the indentation place opens at first, the battery pressure release, battery temperature descends immediately, and cell safety is guaranteed.In addition, this product also has certain help to the bulging of battery.
This kind battery container is applied in 173665 batteries at present.In the Safety performance experiment of 173665 batteries (employing contains the housing as the figure indentation), overcharge experiment and pass through, safety valve is opened, and battery loses heart, and battery does not explode not on fire.In the safety experiment of 173665 batteries (adopting common indentation housing), battery temperature rises rapidly when overcharging experiment, and it is excessive that safety valve is opened the untimely inner pressure of battery that causes, and inside temperature is too high, explosion phenomenon appears in battery, for battery safety is buried huge hidden danger.
In addition, because 173665 battery spaces are limited, when satisfying the battery capacity design, bulging phenomenon in various degree appears in battery easily.This product is put the effect that quick-fried valve arrangement has played stiffening rib to a certain extent, and is favourable to the control cell thickness.
Because advantages such as lithium ion battery has the voltage height, capacity is big, volume is little, light weight, and operating temperature range is wide.High-capacity lithium-ion power battery research is increasingly extensive, yet the Security of lithium ion battery is restricting the electrokinetic cell industrialization process always.Lithium ion battery mainly adopts indentation, modes such as weldering nickel foil etc. to make bleed valve now, and this product is exactly the safety problem that may occur by improving indentation shape and position to prevent that inner pressure of battery is too high.
Claims (1)
1, a kind of new type explosion proof valve is characterized in that: have two lower margins to connect the indentation trace of Y word shape on the housing of battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420085791 CN2779188Y (en) | 2004-12-01 | 2004-12-01 | Explosion-proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420085791 CN2779188Y (en) | 2004-12-01 | 2004-12-01 | Explosion-proof valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2779188Y true CN2779188Y (en) | 2006-05-10 |
Family
ID=36753276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420085791 Expired - Fee Related CN2779188Y (en) | 2004-12-01 | 2004-12-01 | Explosion-proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2779188Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9741996B2 (en) | 2007-12-25 | 2017-08-22 | Byd Co. Ltd. | Construction of electrochemical storage cell |
| CN108134020A (en) * | 2017-12-21 | 2018-06-08 | 苏州精控能源科技有限公司 | Safe battery case |
-
2004
- 2004-12-01 CN CN 200420085791 patent/CN2779188Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9741996B2 (en) | 2007-12-25 | 2017-08-22 | Byd Co. Ltd. | Construction of electrochemical storage cell |
| US10147930B2 (en) | 2007-12-25 | 2018-12-04 | Shenzhen Byd Auto R&D Company Limited | Construction of electrochemical storage cell with conductive block |
| US10381632B2 (en) | 2007-12-25 | 2019-08-13 | Shenzhen Byd Auto R&D Company Limited | Construction of electrochemical storage cell with conductive bridge |
| CN108134020A (en) * | 2017-12-21 | 2018-06-08 | 苏州精控能源科技有限公司 | Safe battery case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060510 Termination date: 20111201 |