CN202178303U - Anti-explosion battery cap - Google Patents
Anti-explosion battery cap Download PDFInfo
- Publication number
- CN202178303U CN202178303U CN2011203010613U CN201120301061U CN202178303U CN 202178303 U CN202178303 U CN 202178303U CN 2011203010613 U CN2011203010613 U CN 2011203010613U CN 201120301061 U CN201120301061 U CN 201120301061U CN 202178303 U CN202178303 U CN 202178303U
- Authority
- CN
- China
- Prior art keywords
- battery
- explosion
- cap
- top cover
- balls
- 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 - Lifetime
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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
Abstract
The utility model discloses an anti-explosion battery cap. The anti-explosion battery cap comprises a top cap and a bottom cap, wherein anti-explosion balls are mounted in the cavity between the top cap and the bottom cap; a breather hole is formed at the bottom of the anti-explosion balls and corresponds to the bottom cap; and a plurality of exhaust holes are formed on the top cap. Owing to the adoption of the above structure, when the temperature of a battery reaches 80 DEG C-100 DEG C, the opening pressure of the cap decreases sharply, and abundant heat is generated when short circuit occurs in the battery, so that the temperature of the battery rises, abundant gas is generated to enable pressure in the battery to rise, the anti-explosion balls are heated, the opening pressure decreases, the anti-explosion balls are opened in advance to discharge gas in the battery through the breather hole and the exhaust hole, and the pressure in the battery is lowered to prevent the battery from explosion, so as to guarantee the safe use of the battery.
Description
Technical field
The utility model relates to a kind of battery cap.
Background technology
Ni-MH battery is widely used owing to its energy density is high; Supporting with it charger quality is uneven, very easily causes battery seriously to overcharge, the battery heating; Electrode expands; Cause battery generation internal short-circuit, battery cap fails in time to open to blast, and shows the safety problem day of Ni-MH battery important.
Summary of the invention
The technical problem that the utility model will solve provides a kind of anti-explosion battery block, ensures that battery is safe in utilization.
In order to solve the problems of the technologies described above; A kind of anti-explosion battery block of the utility model comprises top cover and bottom, in the cavity between said top cover and the bottom explosion-proof ball is installed; The corresponding bottom in explosion-proof ball bottom partly has air-vent, has the plurality of rows pore on the said top cover.
As the improvement of technique scheme, said bottom bottom has a step at least.Said bottom top has first, second cavity that is used for the ccontaining top cover of difference, explosion-proof ball.
As the improvement of technique scheme, said explosion-proof ball is flower shape or square structure.
The beneficial effect of the utility model is: this anti-explosion battery block is owing to adopt said structure, and when battery temperature reached 80 ℃ ~ 100 ℃, the opening pressure of block can sharply descend; During battery generation internal short-circuit, produce a large amount of heat, battery temperature is risen; And produce a large amount of gas, and cell internal pressure is raise, explosion-proof ball is heated; Opening pressure descends, and explosion-proof ball is opened in advance, discharges inside battery gas through air-vent, steam vent; Reduce cell internal pressure, prevent battery explosion, ensure that battery is safe in utilization.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of top cover.
Embodiment
With reference to Fig. 1, Fig. 2; A kind of anti-explosion battery block of the utility model comprises top cover 1 and bottom 2, in the cavity between said top cover 1 and the bottom 2 explosion-proof ball 3 is installed; The corresponding bottom in explosion-proof ball 3 bottoms partly has air-vent 4, has plurality of rows pore 5 on the said top cover 1.This anti-explosion battery block is owing to adopt said structure, and when battery temperature reached 80 ℃ ~ 100 ℃, the opening pressure of block can sharply descend, during battery generation internal short-circuit; Produce a large amount of heat, battery temperature is risen, and produce a large amount of gas, cell internal pressure is raise; Explosion-proof ball is heated, and opening pressure descends, and explosion-proof ball is opened in advance, discharges inside battery gas through air-vent, steam vent; Reduce cell internal pressure, prevent battery explosion, ensure that battery is safe in utilization.Wherein, the material hardness of top cover 1 and bottom 2 reaches 50HRB ~ 60HRB, and the anti-deformation ability of material that reaches this hardness is stronger.The opening pressure of block is 2.0 ~ 3.5MPa, preferred 2.5 ~ 3.3MPa.Though the opening pressure of block is crossed low explosion-proof ability and increased, and is unfavorable for the overcharging resisting ability of battery, too high then explosion-proof ball is opened slower, and internal gas is difficult to discharge, and is unfavorable for battery anti-explosion.
In the present embodiment, said bottom 2 bottoms have a step 6 at least, suitably improve chassis thickness, help improving block chassis anti-deformation ability.Said bottom 2 tops have first, second cavity 7,8 that is used for respectively ccontaining top cover 1, explosion-proof ball 3, make overall structure compacter, and locating effect is better.
In addition, said explosion-proof ball 3 helps the discharge of gas for flower shape or square structure.
The above is merely the preferential execution mode of the utility model, as long as realize that with basic identical means the technical scheme of the utility model purpose all belongs within the protection range of the utility model.
Claims (4)
1. an anti-explosion battery is blocked a shot; Comprise top cover (1) and bottom (2); It is characterized in that in the cavity between said top cover (1) and the bottom (2) explosion-proof ball (3) being installed; The corresponding bottom in explosion-proof ball (3) bottom partly has air-vent (4), has plurality of rows pore (5) on the said top cover (1).
2. anti-explosion battery block according to claim 1 is characterized in that said bottom (2) bottom has a step (6) at least.
3. anti-explosion battery block according to claim 1 and 2 is characterized in that said bottom (2) top has first, second cavity (7,8) that is used for difference ccontaining top cover (1), explosion-proof ball (3).
4. anti-explosion battery block according to claim 3 is characterized in that said explosion-proof ball (3) is flower shape or square structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203010613U CN202178303U (en) | 2011-08-18 | 2011-08-18 | Anti-explosion battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203010613U CN202178303U (en) | 2011-08-18 | 2011-08-18 | Anti-explosion battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202178303U true CN202178303U (en) | 2012-03-28 |
Family
ID=45868171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203010613U Expired - Lifetime CN202178303U (en) | 2011-08-18 | 2011-08-18 | Anti-explosion battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202178303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241558A (en) * | 2014-09-22 | 2014-12-24 | 益阳科力远电池有限责任公司 | Cover-cap for cylindrical battery and cylindrical battery |
| CN110429214A (en) * | 2019-08-07 | 2019-11-08 | 宁德时代新能源科技股份有限公司 | Cap assembly for secondary battery and secondary battery |
-
2011
- 2011-08-18 CN CN2011203010613U patent/CN202178303U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241558A (en) * | 2014-09-22 | 2014-12-24 | 益阳科力远电池有限责任公司 | Cover-cap for cylindrical battery and cylindrical battery |
| CN110429214A (en) * | 2019-08-07 | 2019-11-08 | 宁德时代新能源科技股份有限公司 | Cap assembly for secondary battery and secondary battery |
| CN110429214B (en) * | 2019-08-07 | 2021-12-07 | 宁德时代新能源科技股份有限公司 | Cap assembly for secondary battery and secondary battery |
| US11637348B2 (en) | 2019-08-07 | 2023-04-25 | Contemporary Amperex Technology Co., Limited | Cover assembly of secondary battery and secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |