CN102332545A - Polar plate type lithium battery cover plate - Google Patents
Polar plate type lithium battery cover plate Download PDFInfo
- Publication number
- CN102332545A CN102332545A CN201110317785A CN201110317785A CN102332545A CN 102332545 A CN102332545 A CN 102332545A CN 201110317785 A CN201110317785 A CN 201110317785A CN 201110317785 A CN201110317785 A CN 201110317785A CN 102332545 A CN102332545 A CN 102332545A
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- China
- Prior art keywords
- cover plate
- explosion
- lithium battery
- substrate
- type lithium
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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 invention discloses a polar plate type lithium battery cover plate which comprises a base plate, wherein the center of the base plate is provided with an explosion-prevention hole; electrode polar plates are fixed on two sides of the base plates through rivets; two step surfaces are arranged in the explosion-prevention hole; the upper step surface is provided with a protective cover plate, and the lower step surface is provided with an explosion-prevention film; the explosion-prevention film is electrically connected with the protective cover plate; and a cavity defined by the explosion-prevention film and the protective cover plate forms a pressure release chamber. The explosion-prevention film is electrically connected with the protective cover plate, and the pressure release chamber is formed between the explosion-prevention film and the protective cover plate, so when the pressure applied to the explosion-prevention film is greater than a set value, a stress weak ring of the explosion-prevention film positioned at the lowest part of the explosion-prevention hole can be ruptured, and the pressure of high-pressure gas in a battery is released through the pressure release chamber; and moreover, the cover plate can be used for effectively avoiding battery explosion accidents, and has the advantages of being more practical and safer.
Description
Technical field
The present invention relates to a kind of cover plate of dynamic lithium battery, relate in particular to a kind of pole plate type lithium battery cover plate.
Background technology
Dynamic lithium battery is because it has advantages such as the big and high power of capacity; Extensively applied to each and used electrical domain; Its problem that mainly exists is a safety problem; The safety problem of dynamic lithium battery generally is because the accident that improper use, disabler, cell expansion leakage etc. cause, along with the application of dynamic lithium battery more and more widely with deeply, the user is also increasingly high to the performance requirement of dynamic lithium battery; The security performance of lithium battery is required also increasingly high, therefore the withstand voltage properties of cover plate and explosion precaution have also been proposed requirement higher.The blast resistance construction of current driving force lithium battery cover plate is all comparatively complicated, and economy, practicality are not high.
Summary of the invention
The objective of the invention is to address the above problem, a kind of pole plate type lithium battery cover plate is provided, it can effectively avoid the battery explosion accident, has stronger, the safer advantage of economic and practical.
The objective of the invention is to realize through following technical scheme:
A kind of pole plate type lithium battery cover plate comprises substrate, and said substrate center has explosionproof hole; Said substrate both sides all are fixed with electrode pad through rivet; Two step surfaces are set in the said explosionproof hole, and the terrace of appearing on the stage is installed cover sheet, and the leave from office terrace is installed rupture pressure disc; Be electrically connected between rupture pressure disc and the cover sheet, and the cavity that surrounds is each other formed a pressure releasing chamber.
Said substrate is an aluminium sheet.
Said electrode pad is arranged on the last composition surface of rivet and substrate, and the following composition surface of said rivet and substrate is provided with the electrode leader, and the junction of electrode pad, electrode leader and substrate is provided with sealing gasket.
Said electrode pad comprises the positive and negative electrode pole plate, and corresponding positive and negative pole plate is provided with both positive and negative polarity rivet, both positive and negative polarity leader.
Each one in said positive and negative electrode rivet, and be arranged symmetrically in the left and right sides of substrate center's explosionproof hole.
Each two in said positive and negative electrode rivet, and all be arranged symmetrically in the both sides, front and back of substrate center's explosionproof hole.
Beneficial effect of the present invention is: through rupture pressure disc is electrically connected with cover sheet; And form a pressure releasing chamber each other, when rupture pressure disc pressurized during greater than set point, rupture pressure disc is positioned at the weak circle of explosionproof hole lowest part stress and will ruptures; The inside battery gases at high pressure carry out pressure release through pressure releasing chamber; The contrast prior art, this cover plate can effectively be avoided the battery explosion accident, has stronger, the safer advantage of economic and practical.
Description of drawings
According to accompanying drawing and embodiment the present invention is done further explain below.
Fig. 1 is the structural representation of the embodiment of the invention one described pole plate type lithium battery cover plate;
Fig. 2 is the schematic top plan view of the embodiment of the invention one described pole plate type lithium battery cover plate;
Fig. 3 is the A place enlarged diagram shown in Fig. 1;
Fig. 4 is the structural representation of the described pole plate type of further embodiment of this invention lithium battery cover plate;
Fig. 5 is the schematic top plan view of the described pole plate type of further embodiment of this invention lithium battery cover plate.
Among the figure:
1, substrate; 2, rivet; 3, electrode pad; 4, cover sheet; 5, rupture pressure disc; 6, electrode leader; 7, sealing gasket.
Embodiment
In Fig. 1～3 illustrated embodiments, pole plate type lithium battery cover plate of the present invention comprises aluminum substrate 1; Substrate 1 center has explosionproof hole, and substrate 1 both sides all are fixed with electrode pad 3 through rivet 2, and two step surfaces are set in the explosionproof hole; The terrace of appearing on the stage is installed cover sheet 4, and the leave from office terrace is installed rupture pressure disc 5, is electrically connected between rupture pressure disc 5 and the cover sheet 4; And the cavity that surrounds is each other formed a pressure releasing chamber, and electrode pad 3 is arranged on the last composition surface of rivet 2 and substrate 1, and rivet 2 is provided with electrode leader 6 with the following composition surface of substrate 1; And electrode pad 3, electrode leader 6 are provided with sealing gasket 7 with the junction of substrate 1, and electrode pad 3 comprises positive and negative pole plate, and corresponding positive and negative pole plate is provided with both positive and negative polarity rivet, both positive and negative polarity leader; In the present embodiment, each one in positive and negative electrode rivet, and be arranged symmetrically in the left and right sides of substrate 1 center explosionproof hole; In Fig. 4～5 illustrated embodiments, each two in positive and negative electrode rivet, and all be arranged symmetrically in the both sides, front and back of substrate 1 center explosionproof hole.
Through rupture pressure disc 5 is electrically connected with cover sheet 4; And form a pressure releasing chamber each other; When rupture pressure disc 5 pressurizeds during greater than set point, rupture pressure disc 5 is positioned at the weak circle of explosionproof hole lowest part stress and will ruptures, and the inside battery gases at high pressure carry out pressure release through pressure releasing chamber; This cover plate can effectively be avoided the battery explosion accident, has stronger, the safer advantage of economic and practical.
When battery is assembled, also should satisfy following specification requirement simultaneously, cover plate appearance requirement cleaning surfaces, rustless does not have obvious oil stain, grit and other pollutions, and sealing gasket 7 requires color even, edge not to have burr; Also to carry out salt mist test, promptly in 35 ℃ of environment, adopt the saturated common salt water spray, guarantee the twenty four hours non-corroding; Carrying out high temperature and humidity test, is 60 ℃ in temperature, in humidity 95% environment, and five days non-corrodings; Riveted joint place sealing load hydraulic pressure should be greater than 1.3MPa, and air pressure is greater than 0.3MPa; The positive and negative electrode leader requires to carry out annealing in process, and hardness is less than 90HV, and rivet 2 and electrode leader 6 employing ultrasonic welding processes, and 180 ° of doublings of leader can not be ruptured for seven times; Explosion-proof valve indentation fracture pressure is controlled at 1.0～1.5MPa.
Claims (6)
1. a pole plate type lithium battery cover plate comprises substrate, it is characterized in that; Said substrate center has explosionproof hole, and said substrate both sides all are fixed with electrode pad through rivet, and two step surfaces are set in the said explosionproof hole; The terrace of appearing on the stage is installed cover sheet; The leave from office terrace is installed rupture pressure disc, be electrically connected between rupture pressure disc and the cover sheet, and the cavity that surrounds is each other formed a pressure releasing chamber.
2. pole plate type lithium battery cover plate according to claim 1 is characterized in that said substrate is an aluminium sheet.
3. pole plate type lithium battery cover plate according to claim 1; It is characterized in that; Said electrode pad is arranged on the last composition surface of rivet and substrate, and the following composition surface of said rivet and substrate is provided with the electrode leader, and the junction of electrode pad, electrode leader and substrate is provided with sealing gasket.
4. pole plate type lithium battery cover plate according to claim 3 is characterized in that said electrode pad comprises the positive and negative electrode pole plate, and corresponding positive and negative pole plate is provided with both positive and negative polarity rivet, both positive and negative polarity leader.
5. pole plate type lithium battery cover plate according to claim 4 is characterized in that, each one in said positive and negative electrode rivet, and be arranged symmetrically in the left and right sides of substrate center's explosionproof hole.
6. pole plate type lithium battery cover plate according to claim 4 is characterized in that, each two in said positive and negative electrode rivet, and all be arranged symmetrically in the both sides, front and back of substrate center's explosionproof hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110317785A CN102332545A (en) | 2011-10-18 | 2011-10-18 | Polar plate type lithium battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110317785A CN102332545A (en) | 2011-10-18 | 2011-10-18 | Polar plate type lithium battery cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102332545A true CN102332545A (en) | 2012-01-25 |
Family
ID=45484246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110317785A Pending CN102332545A (en) | 2011-10-18 | 2011-10-18 | Polar plate type lithium battery cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102332545A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795516A (en) * | 2015-04-15 | 2015-07-22 | 苏州安庆富电子科技有限公司 | Battery anode/cathode cover board production method and battery anode/cathode cover board |
| CN110707262A (en) * | 2019-08-13 | 2020-01-17 | 力赛凡科技有限公司 | Explosion-proof ventilation valve of power battery and battery system using same |
| WO2023050835A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery cell, battery and electrical device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10106524A (en) * | 1996-09-24 | 1998-04-24 | Fuji Elelctrochem Co Ltd | Electric parts |
| CN201681982U (en) * | 2010-05-13 | 2010-12-22 | 山东神工宏全模具有限公司 | Anti-explosion cover plate of power lithium ion battery |
| CN202004055U (en) * | 2011-01-14 | 2011-10-05 | 深圳市科达利实业股份有限公司 | Novel sealing plate of high capacity power lithium battery |
| CN202308090U (en) * | 2011-10-18 | 2012-07-04 | 无锡市金杨新型电源有限公司 | Polar-plate type lithium battery cover plate |
-
2011
- 2011-10-18 CN CN201110317785A patent/CN102332545A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10106524A (en) * | 1996-09-24 | 1998-04-24 | Fuji Elelctrochem Co Ltd | Electric parts |
| CN201681982U (en) * | 2010-05-13 | 2010-12-22 | 山东神工宏全模具有限公司 | Anti-explosion cover plate of power lithium ion battery |
| CN202004055U (en) * | 2011-01-14 | 2011-10-05 | 深圳市科达利实业股份有限公司 | Novel sealing plate of high capacity power lithium battery |
| CN202308090U (en) * | 2011-10-18 | 2012-07-04 | 无锡市金杨新型电源有限公司 | Polar-plate type lithium battery cover plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795516A (en) * | 2015-04-15 | 2015-07-22 | 苏州安庆富电子科技有限公司 | Battery anode/cathode cover board production method and battery anode/cathode cover board |
| CN104795516B (en) * | 2015-04-15 | 2017-05-24 | 苏州安庆富电子科技有限公司 | Battery anode/cathode cover board production method and battery anode/cathode cover board |
| CN110707262A (en) * | 2019-08-13 | 2020-01-17 | 力赛凡科技有限公司 | Explosion-proof ventilation valve of power battery and battery system using same |
| WO2023050835A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery cell, battery and electrical device |
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| PB01 | Publication | ||
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Application publication date: 20120125 |