CN102437293A - Explosion-proof battery cover plate of lithium battery - Google Patents
Explosion-proof battery cover plate of lithium battery Download PDFInfo
- Publication number
- CN102437293A CN102437293A CN2011104272590A CN201110427259A CN102437293A CN 102437293 A CN102437293 A CN 102437293A CN 2011104272590 A CN2011104272590 A CN 2011104272590A CN 201110427259 A CN201110427259 A CN 201110427259A CN 102437293 A CN102437293 A CN 102437293A
- Authority
- CN
- China
- Prior art keywords
- explosion
- cover plate
- lithium battery
- proof cap
- battery
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000004880 explosion Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract 3
- 238000003466 welding Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
Images
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 provides an explosion-proof battery cover plate of lithium cell, its includes the apron body, is equipped with the pressure release hole on the apron body, is equipped with the rupture membrane in the pressure release hole, and the rupture membrane top is equipped with explosion-proof block, is equipped with the sealing washer between rupture membrane and the explosion-proof block, and explosion-proof block interference fit is in the pressure release hole. The invention has the advantages of simple structure, low production cost, reliable work and wide application range.
Description
Technical field
The present invention relates to a kind of lithium battery anti-explosion battery cover plate.
Background technology
At present, lithium battery is widely used in all trades and professions.Because it is poor that the lithium battery overcharging resisting is put performance, under abuse conditions or under other improper operating positions, lithium battery interior tends to produce great amount of heat, makes electrolyte moment decompose, and produces a large amount of gases.When the inside battery gas pressure bore pressure above housing, battery will be blasted.This blast not only possibly cause damage to external equipment, also might injure personal safety, even might cause that also other explodes on a large scale.So in numerous industries, the security performance of battery is had relatively high expectations.Take place for fear of blast, in the prior art, tend on battery body, be provided with anti-explosion safety device.Chinese patent 201120143082.7 discloses a kind of anti-explosion cover plate for lithium battery; Comprise cover board body, burst disk and explosion-proof covering board, cover board body is provided with positive terminal and negative terminal, between the positive terminal of cover board body and negative terminal, offers relief hole; The relief hole outside is provided with step groove; The step surface of burst disk and step groove is through the whole circle welding of laser, and burst disk in the relief hole outside, constitutes the sealing to relief hole through laser welding; Explosion-proof covering board is coated on the burst disk outside, and described explosion-proof covering board is provided with venthole.Adopt said structure, in case battery is short-circuited or under the other reasons influence, the inside battery energy sharply discharges; Inside battery air pressure increases, and breaks through the burst disk on the cover board body, discharges gases at high pressure; Cell internal pressure is reduced, realize preventing the purpose of battery explosion.In addition, burst disk and cover board body adopt the laser welding mode, can improve the overall tightness of battery.But because this structure need realize sealing through the whole circle welding of laser, so production cost is higher, and solder joint lost efficacy easily, and stability test is not high, and the scope of application is less.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective that prior art exists, a kind of reliable operation is provided, lithium battery anti-explosion battery cover plate applied widely.
Technical scheme of the present invention is: it comprises cover board body, and cover board body is provided with relief hole, is provided with rupture pressure disc in the relief hole; It is characterized in that; The rupture pressure disc top is provided with explosion-proof cap, is provided with sealing ring between rupture pressure disc and the explosion-proof cap, and the explosion-proof cap interference is assemblied in the relief hole.
Further, said cover board body is provided with positive terminal and negative terminal, and relief hole is located between positive terminal and the negative terminal.
Further, said relief hole is the pressure release shoulder hole.
Further, said explosion-proof cap is provided with venthole, preferred four.
Further, said explosion-proof cap is the column block, and venthole is located at the stud sides of column block.
Further, said sealing ring center is provided with through hole.
The present invention is simple in structure, and production cost is low, and reliable operation is applied widely.Between rupture pressure disc and explosion-proof cap, sealing ring is set, explosion-proof cap compresses sealing ring, can improve sealing effectiveness, thereby uses the present invention, does not need through laser the whole circle welding of rupture pressure disc to be realized sealing again.In case battery is short-circuited or other reasons, the inside battery energy sharply discharges, when inside battery air pressure increases; Inside battery air pressure just can break through the rupture pressure disc on the cover board body; Discharge gases at high pressure, make cell internal pressure obtain discharging, reach the purpose that prevents battery explosion effectively.And when venthole is located at the stud sides of explosion-proof cap, can better prevent in transporting, produce and using, to scratch rupture pressure disc, more stable work is reliable.
Description of drawings
Fig. 1 is one embodiment of the invention structure explosive view;
Fig. 2 is a profile embodiment illustrated in fig. 1.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
With reference to accompanying drawing, present embodiment comprises cover board body 1, and cover board body is provided with positive terminal 11 and negative terminal 12; Cover board body 1 is provided with pressure release shoulder hole 13, and pressure release shoulder hole 13 is located between positive terminal 11 and the negative terminal 12, is provided with rupture pressure disc 2 in the pressure release shoulder hole 13; Rupture pressure disc 2 tops are provided with explosion-proof cap 4, are provided with sealing ring 3 between rupture pressure disc 2 and the explosion-proof cap 4, and sealing ring 3 centers are provided with through hole; Explosion-proof cap 4 interference are assemblied in the pressure release shoulder hole 13; Be used for sealing ring 3 is compressed and play sealing function, avoided causing solder joint to lose efficacy easily, and production cost crossed problems such as height with the method for welding; Explosion-proof cap 4 is provided with four ventholes 41; Explosion-proof cap 4 is the column block, and venthole 41 is located at the stud sides of column block, can prevent effectively transport, produce and practicality in scratch rupture pressure disc 2.
Claims (7)
1. a lithium battery anti-explosion battery cover plate comprises cover board body, and cover board body is provided with relief hole; Be provided with rupture pressure disc in the relief hole, it is characterized in that, the rupture pressure disc top is provided with explosion-proof cap; Be provided with sealing ring between rupture pressure disc and the explosion-proof cap, the explosion-proof cap interference is assemblied in the relief hole.
2. lithium battery anti-explosion battery cover plate according to claim 1 is characterized in that said cover board body is provided with positive terminal and negative terminal, and relief hole is located between positive terminal and the negative terminal.
3. lithium battery anti-explosion battery cover plate according to claim 1 and 2 is characterized in that said relief hole is the pressure release shoulder hole.
4. lithium battery anti-explosion battery cover plate according to claim 1 and 2 is characterized in that said explosion-proof cap is provided with venthole.
5. lithium battery anti-explosion battery cover plate according to claim 1 and 2 is characterized in that, further, said sealing ring center is provided with through hole.
6. lithium battery anti-explosion battery cover plate according to claim 4 is characterized in that the venthole on the said explosion-proof cap is four.
7. lithium battery anti-explosion battery cover plate according to claim 4 is characterized in that, said explosion-proof cap is the column block, and venthole is located at the stud sides of column block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104272590A CN102437293A (en) | 2011-12-20 | 2011-12-20 | Explosion-proof battery cover plate of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104272590A CN102437293A (en) | 2011-12-20 | 2011-12-20 | Explosion-proof battery cover plate of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102437293A true CN102437293A (en) | 2012-05-02 |
Family
ID=45985261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104272590A Pending CN102437293A (en) | 2011-12-20 | 2011-12-20 | Explosion-proof battery cover plate of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102437293A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485431A (en) * | 2014-12-23 | 2015-04-01 | 常熟高嘉能源科技有限公司 | Power battery cover plate assembly |
| CN105811011A (en) * | 2014-12-29 | 2016-07-27 | 东莞乔登节能科技有限公司 | Molding method for explosion-proof structure of lithium battery core |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645495A (en) * | 2008-08-07 | 2010-02-10 | 比亚迪股份有限公司 | Explosion-proof structure and power battery adopting explosion-proof structure |
| CN201436694U (en) * | 2009-06-24 | 2010-04-07 | 东莞新能源科技有限公司 | Power battery liquid injection and explosion proof device |
| CN202352747U (en) * | 2011-12-20 | 2012-07-25 | 刘立文 | Explosion-proof lithium battery cover plate with sealing ring |
-
2011
- 2011-12-20 CN CN2011104272590A patent/CN102437293A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645495A (en) * | 2008-08-07 | 2010-02-10 | 比亚迪股份有限公司 | Explosion-proof structure and power battery adopting explosion-proof structure |
| CN201436694U (en) * | 2009-06-24 | 2010-04-07 | 东莞新能源科技有限公司 | Power battery liquid injection and explosion proof device |
| CN202352747U (en) * | 2011-12-20 | 2012-07-25 | 刘立文 | Explosion-proof lithium battery cover plate with sealing ring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485431A (en) * | 2014-12-23 | 2015-04-01 | 常熟高嘉能源科技有限公司 | Power battery cover plate assembly |
| CN105811011A (en) * | 2014-12-29 | 2016-07-27 | 东莞乔登节能科技有限公司 | Molding method for explosion-proof structure of lithium battery core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |