CN202004068U - Battery explosion-proof device - Google Patents
Battery explosion-proof device Download PDFInfo
- Publication number
- CN202004068U CN202004068U CN2011200330253U CN201120033025U CN202004068U CN 202004068 U CN202004068 U CN 202004068U CN 2011200330253 U CN2011200330253 U CN 2011200330253U CN 201120033025 U CN201120033025 U CN 201120033025U CN 202004068 U CN202004068 U CN 202004068U
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- CN
- China
- Prior art keywords
- burst disk
- explosion
- explosion protection
- battery
- batteries
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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 - 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
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a battery explosion-proof device comprising a battery top cover with an anti-explosion hole, and an anti-explosion piece mounted on the battery top cover in a sealing manner, wherein the anti-explosion piece is glued to the battery top cover through a glue layer and seals the anti-explosion hole. When high pressure or high temperature is generated in the battery, the anti-explosion piece is enforced or heated, the glue on the glue layer is broken and melt, and the anti-explosion piece is divorced from the battery top cover, so that the anti-explosion hole is opened to ensure the safety performance of the battery.
Description
Technical field
The utility model belongs to field of batteries, and more particularly, the utility model relates to a kind of explosion protection for batteries with good safety energy.
Background technology
Along with becoming increasingly conspicuous of environmental problem, the approval that has obtained vast production firm and consumer gradually as the hybrid vehicle and the electric automobile of new-energy automobile representative.Electrokinetic cell has become the critical component of electric automobile as the major impetus source of new-energy automobile.
The characteristics and the application scenario of electrokinetic cell itself are more special, and the user is very strict to the requirement of aspects such as its capacity, multiplying power, reliability and fail safe.When abnormal conditions occurring, abnormal battery should in time quit work, and it is on fire to blast, and this is the basic demand to the electrokinetic cell fail safe.For this reason, explosion-protection equipment is installed generally on the electrokinetic cell, explosion-protection equipment is worked automatically when abnormal conditions occurring, thereby avoids producing security incident.
The available dynamic battery generally uses explosion-proof valve, rupture pressure disc or explosion-proof pin, and its principle is to utilize metal film (below the general 0.1mm, as Copper Foil, aluminium foil etc.) being subjected to metal film explosion under certain pressure mostly, thereby has obtained certain security performance.
But there is following defective at least in the safety device of existing electrokinetic cell: at first, the material consistency of metal rupture pressure disc must be very good; Secondly, rupture pressure disc places electrochemical environment complicated in the battery for a long time, is corroded easily and causes perforation to be lost efficacy, can't operate as normal, influenced the security performance of battery.
In view of this, necessary provide a kind of have good safety can explosion protection for batteries.
Summary of the invention
The purpose of this utility model is: a kind of explosion protection for batteries with good safety energy is provided.
To achieve these goals, the utility model provides a kind of explosion protection for batteries, and it comprises battery cap that is provided with explosionproof hole and the burst disk that is seal-installed on the battery cap, and burst disk is bonded on the battery cap by glue layer and seals explosionproof hole.
A kind of improvement as the utility model explosion protection for batteries is provided with cushion rubber between described burst disk and the battery cap.
As a kind of improvement of the utility model explosion protection for batteries, described burst disk is provided with annular protuberance, and described cushion rubber is sheathed on annular protuberance periphery.
As a kind of improvement of the utility model explosion protection for batteries, described battery cap is provided with around the annular groove of explosionproof hole and annular recess, and the annular protuberance of described burst disk and described cushion rubber correspondence are contained in described annular groove and the annular recess.
As a kind of improvement of the utility model explosion protection for batteries, described glue layer is to form by coating the glue curing that has adhesive property in annular groove and the annular recess.
As a kind of improvement of the utility model explosion protection for batteries, the pressure limit that described glue layer can bear is 0.2 ~ 2.0Mpa.
As a kind of improvement of the utility model explosion protection for batteries, described burst disk is to be made greater than the nonmetallic materials of 0.1mm by thickness.
With respect to prior art, the utility model explosion protection for batteries has the following advantages: the utility model uses thicker burst disk (can be the above nonmetallic materials of 0.1mm), rely on the glue layer that forms after the glue curing to realize explosion, burst disk itself can not ftracture, thereby has avoided the bad and not corrosion resistant problem of existing metal rupture pressure disc material consistency.Utilize glue that the burst disk sealing is bonded on the battery cap, the glue layer that forms after the full solidification can bear the pressure of setting.After producing high pressure or high temperature in the battery, the stressed intermediate projections of burst disk is pulled open glue layer, and burst disk breaks away from from battery cap, and explosionproof hole is opened, and can guarantee the security performance of battery.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model explosion protection for batteries and useful technique effect thereof are elaborated.
Fig. 1 is the decomposing schematic representation of the utility model explosion protection for batteries.
Fig. 2 is the assembling schematic diagram of the utility model explosion protection for batteries.
Fig. 3 is the cross-sectional schematic of explosion protection for batteries shown in Figure 2.
Embodiment
See also Fig. 1 to shown in Figure 3, the utility model explosion protection for batteries 10 comprises the battery cap 20 that is provided with explosionproof hole 200, is seal-installed on the burst disk 30 on the explosionproof hole 200, and place cushion rubber 40 between battery cap 20 and the burst disk 30, wherein, burst disk 30 is bonded on the battery cap 20 by glue layer 50.
Battery cap 20 is provided with explosionproof hole 200, is provided with concentric annular groove 202 and annular recess 204 around explosionproof hole 200, and annular groove 202 can corresponding be accommodated the annular protuberance 302 of burst disk 30, and annular recess 204 can correspondence be accommodated cushion rubber 40.
Cushion rubber 40 is a ring slice, and adopting to have well has the elastomeric material of sealing property and damping performance to make, as fluorubber etc.The external diameter of the internal diameter of cushion rubber 40 and annular protuberance 302 is suitable, can be sheathed on the annular protuberance 302.When burst disk 30 was seal-installed on the battery cap 20, cushion rubber 40 was between burst disk 30 and battery cap 20 and be positioned at the periphery of annular protuberance 302.Cushion rubber 40 can the enhanced leaktightness effect, and shockproof anti-hydrops.
Describe the assembling process of the utility model explosion protection for batteries 10 in detail below in conjunction with accompanying drawing: at first, cushion rubber 40 is set on the annular protuberance 302 of burst disk 30; Then, glue is uniformly coated in the annular groove 202 and annular recess 204 of battery cap 20 by point gum machine, consumption or burst disk 30 by control glue are come controlled blasting power with the glue contact area of battery cap 20, the consumption of glue is controlled by the structure of adjusting annular groove 202, and unnecessary glue can overflow from annular groove 202; Subsequently, the burst disk 30 that is arranged with cushion rubber 40 is placed on the explosionproof hole 200, the annular protuberance 302 of burst disk 30 and cushion rubber 40 correspondences are contained in the annular groove 202 and annular recess 204 on the battery cap 20; At last, push down the upper surface of burst disk 30 and kept 5 ~ 10 minutes with anchor clamps, treat that glue forms glue layer 50 at normal temperatures after the full solidification, the periphery of burst disk 30 is sealing adhesive on battery cap 20, thereby firmly is installed in burst disk 30 on the battery cap 20 and seals explosionproof hole 200.
Of particular note, the selection of glue is most important to the utility model explosion protection for batteries 10: glue needs and can corrode by electrolyte resistance, bonding force is evenly reliable, has excellent sealing performance, can prevent to soak into and wear out, and can accept the production process temperature and the normal serviceability temperature of battery.In addition, glue preferably can be at high temperature (more than the 150 degrees centigrade) ageing failure of setting, to realize the designing requirement of high temperature explosion.In embodiment of the present utility model, the glue that is adopted is anaerobic adhesive or epoxy resin glue, as the 3M dp810 import glue of Shenzhen SLUTE company recommendation.According to an execution mode of the present utility model, the pressure limit that the glue layer 50 that the glue full solidification forms can bear is 0.2 ~ 2.0Mpa.
In conjunction with the description of above-mentioned embodiment as can be seen, after battery is subjected to high pressure or high temperature, glue layer 50 loses cementability, burst disk 30 stressed intermediate projections, pull open glue layer 50 and break away from from battery cap 20, explosionproof hole 200 is opened, and plays explosion-proof function, guarantees the security performance of battery.
According to above-mentioned principle, the utility model can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the utility model just for convenience of description.
Claims (7)
1. explosion protection for batteries, it comprises the battery cap that is provided with explosionproof hole and is seal-installed on burst disk on the battery cap that it is characterized in that: described burst disk is bonded on the battery cap by glue layer and seals explosionproof hole.
2. explosion protection for batteries according to claim 1 is characterized in that: be provided with cushion rubber between described burst disk and the battery cap.
3. explosion protection for batteries according to claim 2 is characterized in that: described burst disk is provided with annular protuberance, and described cushion rubber is sheathed on annular protuberance periphery.
4. explosion protection for batteries according to claim 3, it is characterized in that: described battery cap is provided with around the annular groove of explosionproof hole and annular recess, and the annular protuberance of described burst disk and described cushion rubber correspondence are contained in described annular groove and the annular recess.
5. explosion protection for batteries according to claim 4 is characterized in that: described glue layer is to form by coating the glue curing that has adhesive property in annular groove and the annular recess.
6. explosion protection for batteries according to claim 1 is characterized in that: the pressure limit that described glue layer can bear is 0.2 ~ 2.0Mpa.
7. according to each described explosion protection for batteries in the claim 1 to 6, it is characterized in that: described burst disk is to be made greater than the nonmetallic materials of 0.1mm by thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200330253U CN202004068U (en) | 2011-01-31 | 2011-01-31 | Battery explosion-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200330253U CN202004068U (en) | 2011-01-31 | 2011-01-31 | Battery explosion-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004068U true CN202004068U (en) | 2011-10-05 |
Family
ID=44706795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200330253U Expired - Lifetime CN202004068U (en) | 2011-01-31 | 2011-01-31 | Battery explosion-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004068U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611313A (en) * | 2017-10-07 | 2018-01-19 | 珠海市至力电池有限公司 | Button cell Explosion-proof cap |
| WO2019165648A1 (en) * | 2018-02-27 | 2019-09-06 | 宁德时代新能源科技股份有限公司 | Top cover assembly and secondary battery |
| CN113594621A (en) * | 2021-07-21 | 2021-11-02 | 宁波小顶科技有限公司 | Exhaust device for filling type battery |
| CN114188655A (en) * | 2021-11-24 | 2022-03-15 | 士彩材料科技（苏州）有限公司 | Explosion-proof balance valve capable of automatically realizing blasting at high temperature |
-
2011
- 2011-01-31 CN CN2011200330253U patent/CN202004068U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611313A (en) * | 2017-10-07 | 2018-01-19 | 珠海市至力电池有限公司 | Button cell Explosion-proof cap |
| WO2019165648A1 (en) * | 2018-02-27 | 2019-09-06 | 宁德时代新能源科技股份有限公司 | Top cover assembly and secondary battery |
| CN113594621A (en) * | 2021-07-21 | 2021-11-02 | 宁波小顶科技有限公司 | Exhaust device for filling type battery |
| CN114188655A (en) * | 2021-11-24 | 2022-03-15 | 士彩材料科技（苏州）有限公司 | Explosion-proof balance valve capable of automatically realizing blasting at high temperature |
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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: 20111005 |