CN2747712Y - Explosion proof safety valve for battery - Google Patents
Explosion proof safety valve for battery Download PDFInfo
- Publication number
- CN2747712Y CN2747712Y CN 200420085802 CN200420085802U CN2747712Y CN 2747712 Y CN2747712 Y CN 2747712Y CN 200420085802 CN200420085802 CN 200420085802 CN 200420085802 U CN200420085802 U CN 200420085802U CN 2747712 Y CN2747712 Y CN 2747712Y
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- China
- Prior art keywords
- battery
- explosion
- proof
- electrode slice
- slice
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- 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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- Y02E60/12—
Abstract
The utility model discloses an explosion proof safety valve for battery, belonging to the technical field of the electric appliance. The explosion proof safety valve for battery is mainly characterized in that an explosion-proof electrode piece is fixedly arranged on the base of a circular valve. A battery electrode piece is fixedly welded on the explosion-proof electrode piece. A decompression hole is arranged on the positive electrode of the battery. The explosion proof safety valve and the positive electrode of the battery of the utility model are integrated. When the superheating phenomenon of the battery occurs for overcharging and the gas is generated, and once the inner pressure attains the limit value designed by the valve body, the explosion-proof electrode piece is jacked by the gas pressure. The explosion-proof electrode piece and the positive terminal in the battery are out of contact, and the charging circuit is switched off. The charging process is ceased, and the gas is no longer generated; the leakage of the electrolyte materials in the battery is prevented. The utility model has a simple structure, and safe and reliable use. The utility model used in the lithium battery can effectively prevent the battery in the charging process from exploding and leaking, and protects the battery.
Description
One, technical field
The utility model relates to a kind of safety valve, and specifically a kind of battery anti-explosion safety valve belongs to battery technology field in the electrical equipment.
Two, background technology
Various electrical installations in use all will be done power with power supply, and drive circuit normally moves, and battery is just born this key player.Mainly from making the charging and the two kinds of functions of discharging, charging is to guarantee that battery has enough electric energy to battery at work, and discharge is the prerequisite of holding circuit operate as normal.Lithium battery commonly used now is in charging process, other chemical energy is converted in the process of electric energy and will discharges a certain amount of gas, when the gas that discharges more for a long time, cell internal pressure raises, can be with the battery case dilatancy, when the gas of release is a lot, the battery container internal pressure further raises, battery case can be broken through blast, the lighter damages electrical installation and electric equipment, and weight person can cause people's injury.
At present, the cell safety explosion-protection equipment is mainly taked following dual mode: the one, on battery, increase explosion-proof line; The 2nd, on battery, increase relief valve.
The battery that has explosion-proof line is to use pressing equipment punching press impression on battery container, and other position of the relative housing of the thickness at impression position is thinner, forms low stress.When cell internal pressure surpassed certain limit, the low stress impression position release pressure that breaks was avoided battery explosion.
The battery that has relief valve is to be provided with sheet metal on battery container, and relief valve can in time be broken through leak pressure when cell internal pressure is excessive, avoids battery explosion.
The battery production technology that has explosion-proof line is fairly simple, cost is lower, but machining accuracy is not easy control, and the stress consistency at impression position is poor, cause battery under the safe handling situation, to break in advance during understressing easily and scrap, then do not have explosion-proof when stress is excessive.The battery that has relief valve can done higherly compared with the battery that has explosion-proof line aspect the withstand voltage precision, and the anti-explosion safety characteristic is higher, can accomplish to avoid battery explosion.But the battery that has relief valve causes leaking of inside battery material easily when pressure release, and causes the pollution and the damage of outside batteries equipment.On the other hand; the battery that has relief valve is because anodal setting of relief valve and outside batteries is not together, and the charging process of battery is still continuing after the relief valve explosion, and gas is still producing in large quantities; do not have automatic protective effect, it is more serious that electric equipment is polluted with damage.
Three, utility model content
The purpose of this utility model is to exist the stress consistency difference at impression position and relief valve to cause leaking of inside battery material in use easily in order to solve the existing battery that has explosion-proof line with the battery that has relief valve, and the release gas that continues to charge, cause the pollution and the damage of outside batteries equipment, prevent the persistently overheating problem of battery and propose a kind of new technical scheme.
The technical scheme that the designing technique defective of its existence of solving the utility model is adopted is:
The battery anti-explosion safety valve, it is to be made of explosion-proof electrode slice and valve body pedestal, the shape of valve body pedestal is a torus, in the valve body pedestal, be provided with terrace with edge, fixing welding is provided with explosion-proof electrode slice on the terrace with edge of valve body pedestal, on explosion-proof electrode slice, be fixedly welded with battery anode slice, on battery anode slice, be provided with relief hole.The circular valve pedestal is to be provided with a trapezoidal terrace with edge on annular solid circumference interior angle, is fixedly welded with explosion-proof electrode slice on the annular terrace with edge of valve body pedestal, is fixedly welded with battery anode slice on explosion-proof electrode slice, is provided with relief hole on battery anode slice.Its shape of explosion-proof electrode slice that is fixedly welded on the trapezoidal terrace with edge of valve body pedestal is the concave metal sheet, on the explosion-proof electrode slice of concave metal, be welded with the convex battery anode slice onesize again, on the convex battery anode slice, evenly be provided with relief hole with explosion-proof electrode slice diameter.
The beneficial effects of the utility model are: explosion-proof electrode slice and valve body pedestal fix and weld together, the electrode anode sheet is fixed and welded together with explosion-proof electrode slice again, therefore, this explosion relief valve promptly can be used as relief valve and uses the electrode that can be used as battery again to use, and integrates explosion relief valve and anode.When battery produces gas owing to the generation superheating phenomenon that overcharges, when in case internal pressure reaches the limit value of valve body design, explosion-proof electrode slice is by gas pressure jack-up epirelief, the outside anodal of battery disengages with the inside battery positive pole, and charge circuit is disconnected, and charging process stops, gas no longer produces, in press to keep stable, avoid the generation of exploding, prevented leaking of electrolyte material in the battery.
Generally speaking, charge circuit is disconnected back gas will be stopped to produce, and explosion-proof electrode slice can not break, and the inside battery material can not leak into outside batteries, guaranteed that outside batteries equipment is not contaminated or damaged to have only when internal pressure is excessive just and to break release pressure by explosion-proof electrode slice.
Four, description of drawings
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is that A-A shows structural representation to cuing open in the utility model accompanying drawing 1;
Accompanying drawing 3 is a kind of example structure schematic diagrames of the utility model.
Among the figure: the 1st, relief hole, the 2nd, battery anode slice, the 3rd, valve body pedestal, the 4th, positive terminal, the 6th in the explosion-proof electrode slice, the 5th, battery, battery case.
Five, embodiment
Do a ring cylinder with aluminium, be provided with a trapezoidal terrace with edge at ring cylinder along the circumference interior angle, constitute valve body pedestal (3), do the explosion-proof electrode slice of a spill (4) with aluminium, do a convex battery anode slice (2) identical with copper material again, on convex battery anode slice (2), be arranged with four relief holes (1) with explosion-proof electrode slice (4) diameter.Earlier explosion-proof electrode slice (4) is fixedly welded on the valve body pedestal (3), again convex battery anode slice (2) is fixedly welded on the explosion-proof electrode slice (4).At last valve body pedestal (3) is passed through the insulating barrier sealing and fixing on the cover plate of battery case.Battery case (6) is the negative plate of battery.During charging, explosion-proof electrode slice (4) is by the jack-up that made progress, at this moment when cell internal pressure is higher; positive terminal (5) disengages with explosion-proof electrode slice (4) in the battery, and charge circuit is disconnected, and charging finishes; prevented that battery from blasting, protected battery and electric equipment.
The closed type test:
Adopt airtight tester from the safety valve top (being positive extreme direction) exert pressure, when pressure reached the 3kgf/ square centimeter, no gas leakage was that sealing property is qualified.
Voltage-withstand test:
Adopt airtight tester to exert pressure from safety valve bottom (being explosion-proof electrode slice direction), need satisfy following two conditions is that voltage-withstand test is qualified, and it is defective for voltage-withstand test that any one can not satisfy this condition person:
(1) when pressure reaches the 3kgf/ square centimeter, explosion-proof electrode slice (3) beginning quilt jack-up;
(2) when pressure reaches the 15kgf/ square centimeter, explosion-proof electrode slice (3) is broken through by pressed gas.
Claims (3)
1, a kind of battery anti-explosion safety valve, it is to be made of explosion-proof electrode slice and valve body pedestal, it is characterized in that: the shape of valve body pedestal (3) is a torus, in valve body pedestal (3), be provided with terrace with edge, fixing welding is provided with explosion-proof electrode slice (4) on the terrace with edge of valve body pedestal (3), on explosion-proof electrode slice (4), be fixedly welded with battery anode slice (2), on battery anode slice (2), be provided with relief hole (1).
2, a kind of battery anti-explosion safety valve according to claim 1, it is characterized in that: circular valve pedestal (3) is to be provided with a trapezoidal terrace with edge on annular solid circumference interior angle, on the annular terrace with edge of valve body pedestal (3), be fixedly welded with explosion-proof electrode slice (4), on explosion-proof electrode slice (4), be fixedly welded with battery anode slice (2), on battery anode slice (2), be provided with relief hole (1).
3, a kind of battery anti-explosion safety valve according to claim 1 and 2, it is characterized in that: its shape of explosion-proof electrode slice (4) that is fixedly welded on the trapezoidal terrace with edge of valve body pedestal (3) is the concave metal sheet, on the explosion-proof electrode slice of concave metal (4), be welded with the convex battery anode slice (2) onesize again, on convex battery anode slice (2), evenly be provided with relief hole (1) with explosion-proof electrode slice (4) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420085802 CN2747712Y (en) | 2004-08-06 | 2004-08-06 | Explosion proof safety valve for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420085802 CN2747712Y (en) | 2004-08-06 | 2004-08-06 | Explosion proof safety valve for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2747712Y true CN2747712Y (en) | 2005-12-21 |
Family
ID=35708252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420085802 Expired - Fee Related CN2747712Y (en) | 2004-08-06 | 2004-08-06 | Explosion proof safety valve for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2747712Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008049294A1 (en) * | 2006-10-27 | 2008-05-02 | Shenzhen Bak Battery Co., Ltd | Cover plate assembly and battery with explosion-proof function |
| WO2008049295A1 (en) * | 2006-10-27 | 2008-05-02 | Shenzhen Bak Battery Co., Ltd | Cover plate assembly and battery |
| WO2008049293A1 (en) * | 2006-10-27 | 2008-05-02 | Shenzhen Bak Battery Co., Ltd | Explosion-proof cover plate assembly and battery |
| WO2008145045A1 (en) * | 2007-05-25 | 2008-12-04 | Harbin Coslight Power Co., Ltd | Lithium ion battery explosion proof device |
-
2004
- 2004-08-06 CN CN 200420085802 patent/CN2747712Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008049294A1 (en) * | 2006-10-27 | 2008-05-02 | Shenzhen Bak Battery Co., Ltd | Cover plate assembly and battery with explosion-proof function |
| WO2008049295A1 (en) * | 2006-10-27 | 2008-05-02 | Shenzhen Bak Battery Co., Ltd | Cover plate assembly and battery |
| WO2008049293A1 (en) * | 2006-10-27 | 2008-05-02 | Shenzhen Bak Battery Co., Ltd | Explosion-proof cover plate assembly and battery |
| WO2008145045A1 (en) * | 2007-05-25 | 2008-12-04 | Harbin Coslight Power Co., Ltd | Lithium ion battery explosion proof device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |