CN205609597U - Explosion -proof power battery cover plate of short -circuit protection formula - Google Patents
Explosion -proof power battery cover plate of short -circuit protection formula Download PDFInfo
- Publication number
- CN205609597U CN205609597U CN201620439158.3U CN201620439158U CN205609597U CN 205609597 U CN205609597 U CN 205609597U CN 201620439158 U CN201620439158 U CN 201620439158U CN 205609597 U CN205609597 U CN 205609597U
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- China
- Prior art keywords
- electrode
- battery
- explosion
- cover board
- board body
- Prior art date
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Links
- 238000004880 explosion Methods 0.000 title abstract description 4
- 238000005452 bending Methods 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000505 pernicious effect Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides an explosion -proof power battery cover plate of short -circuit protection formula, be equipped with positive electrode and negative electrode on the apron body, any electrode conductance wherein leads to contact apron body, another then with apron body insulated isolation, positive electrode and negative electrode still are connected with the drainage piece respectively separately, be provided with the electrically conductive piece of short circuit that the flexible warp in the electrode below with apron body insulated isolation, it agitates short circuit contact structure to form atmospheric pressure, be equipped with logical groove in the drainage piece that the electrode that leads to the contact with apron body electric conductance is connected, this narrow and small department of leading to between groove and the drainage piece edge forms easily disconnected weak portion. If the inside pressure lifting that makes unusually of battery, electrically conductive bending deformation of short circuit and above -mentioned electrode contact are agitated to atmospheric pressure, make the battery just, short circuit between the negative electrode, the down easy disconnected weakness portion of heavy current effect in the twinkling of an eye by the quick -break, opening circuit in the inside of battery, no longer switches on other the normal batteries in the group battery, avoids the explosion to reach phenomenon such as catch fire, has improved the security greatly.
Description
Technical field: this utility model relates to the cover plate of a kind of dynamic lithium battery.
Background technology: be generally provided with explosion-proof valve on existing cover plate of power battery to protect battery, if battery occurs abnormal, its internal pressure reaches certain degree can make explosion-proof valve rupture venting, it is to avoid battery explosion.In practice, electrokinetic cell the most all uses multiple battery to connect or compose in parallel set of cells and uses, after in set of cells, certain battery occurs extremely making explosion-proof valve rupture, the inside of this exception battery still may proceed to carry out violent electrochemical reaction, if the battery holding connection that other normal battery continues and goes wrong, the pernicious effect of violent repeated charge can be formed, it is likely that cause battery that blast and the serious safety problem such as on fire occur with abnormal battery.Also occur in that now the battery cover board of band short-circuit protection, positive and negative electrode circuit fusing can be made during battery exception, and normal battery disconnects, however it is necessary that the weak part unreasonable structure of fusing, processing trouble, be also easy to affect normal battery operation state.
Summary of the invention: for the deficiencies in the prior art, this utility model provides short-circuit protection formula explosion-proof power battery cover plate a kind of rational in infrastructure, that safety is high.
This utility model includes cover board body and the explosion-proof valve being located therein, cover board body is provided with anelectrode and negative electrode, any one electrode conductance therein connects tactile cover board body, another is then dielectrically separated from cover board body, anelectrode and negative electrode are respectively connected with drainage piece the most respectively, the base part being dielectrically separated from cover board body is provided with bending deformed short circuit electric-conductor, form air pressure and agitate shorted contacts structure, conduct in the drainage piece that the electrode contacted is connected with cover board body and be provided with groove, narrow and small place between this groove and drainage piece edge forms easily broken weak point.
An electrode and cover board body in this utility model are dielectrically separated from, pressure is made to raise if inside battery is abnormal, before explosion-proof valve ruptures, air pressure can agitate short circuit electric-conductor flexural deformation and above-mentioned electrode contact, make battery just, short circuit is formed by short circuit electric-conductor and cover board body between negative electrode, under instantaneous large-current effect, the easily broken weak point of drainage piece is fused rapidly, the internal break of battery, other normal battery that the inside of this exception battery is no longer turned in set of cells, avoid producing the pernicious effect of violent repeated charge and cause blast and the phenomenon such as on fire, substantially increase safety.And, easily broken weak point is arranged on drainage piece and makes more reasonable structure simple, easy to process, it is not easy to affect the normal operating conditions of battery.
This utility model is further illustrated below in conjunction with the accompanying drawings with embodiment.
Accompanying drawing illustrates: Fig. 1 is the main structure schematic diagram of embodiment.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is that the A of Fig. 1 is to partial schematic diagram.
Fig. 4 is the drainage piece schematic diagram in Fig. 3.
Detailed description of the invention: as shown in Figures 1 to 4, explosion-proof valve 4 is located in cover board body 1, cover board body 1 is provided with anelectrode 2 and negative electrode 3, any one electrode conductance therein connects tactile cover board body 1, another is then dielectrically separated from cover board body 1, and anelectrode 2 and negative electrode 3 are respectively connected with drainage piece 8 the most respectively.The base part being dielectrically separated from cover board body 1 is provided with bending deformed short circuit electric-conductor 5, form air pressure and agitate shorted contacts structure, conducting with cover board body 1 in the drainage piece 8 that the electrode contacted is connected and be provided with groove 6, the narrow and small place between this groove 6 and drainage piece 8 edge forms easily broken weak point 7.
Being that negative electrode 3 utilizes insulated enclosure pad and cover board body 1 to be dielectrically separated from the present embodiment, short circuit electric-conductor 5 is positioned at below negative electrode 3, and anelectrode 2 conducts contact cover board body 1, and groove 6 and corresponding easily broken weak point 7 are located in the drainage piece 8 connected with anelectrode 2.Due to more fragile at easily broken weak point 7, it be additionally provided with insulation vibrationproof protective layer 9 on drainage piece 8 surface of groove 6 and easily broken weak point 7 present position, so can increase structural strength, it is to avoid because rocking the easily broken weak points 7 of unexpected disconnection such as vibration.
During battery connection work, pressure is made to raise if certain inside battery in power battery pack is abnormal, before explosion-proof valve 4 ruptures, air pressure inside promotes drum flexural deformation on short circuit electric-conductor 5, contact with negative electrode 3, so directly turn on formation short circuit by short circuit electric-conductor 5 and cover board body 1 between negative electrode 3 and the anelectrode 2 of this exception battery, under the effect of instantaneous large-current, fused rapidly with the easily broken weak point 7 in the drainage piece 8 of anelectrode 2 connection, make the internal break of this battery, so other normal battery in set of cells would not turn on abnormal inside battery, avoid producing the pernicious effect of violent repeated charge between normal battery and abnormal battery, protect the safety of whole power battery pack.
Claims (2)
1. a short-circuit protection formula explosion-proof power battery cover plate, including cover board body and the explosion-proof valve that is located therein, cover board body is provided with anelectrode and negative electrode, any one electrode conductance therein connects tactile cover board body, another is then dielectrically separated from cover board body, anelectrode and negative electrode are respectively connected with drainage piece the most respectively, it is characterized by: the base part being dielectrically separated from cover board body (1) is provided with bending deformed short circuit electric-conductor (5), form air pressure and agitate shorted contacts structure, conduct with cover board body (1) in the drainage piece (8) that the electrode contacted is connected and be provided with groove (6), narrow and small place between this groove (6) and drainage piece (8) edge forms easily broken weak point (7).
Short-circuit protection formula explosion-proof power battery cover plate the most according to claim 1, is characterized by: be additionally provided with insulation vibrationproof protective layer (9) on drainage piece (8) surface of groove (6) and easily broken weak point (7) present position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620439158.3U CN205609597U (en) | 2016-05-16 | 2016-05-16 | Explosion -proof power battery cover plate of short -circuit protection formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620439158.3U CN205609597U (en) | 2016-05-16 | 2016-05-16 | Explosion -proof power battery cover plate of short -circuit protection formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205609597U true CN205609597U (en) | 2016-09-28 |
Family
ID=56966400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620439158.3U Active CN205609597U (en) | 2016-05-16 | 2016-05-16 | Explosion -proof power battery cover plate of short -circuit protection formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205609597U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018157651A1 (en) * | 2017-02-28 | 2018-09-07 | 比亚迪股份有限公司 | Single battery, dual battery pack, and battery module |
| CN109216641A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Battery protection cover plate assembly, power battery and electric car |
| CN109962315A (en) * | 2017-12-25 | 2019-07-02 | 惠州比亚迪电池有限公司 | A kind of battery pack, vehicle and energy storage device |
| CN111490190A (en) * | 2019-01-25 | 2020-08-04 | 比亚迪股份有限公司 | Battery cover plate, battery and vehicle |
-
2016
- 2016-05-16 CN CN201620439158.3U patent/CN205609597U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018157651A1 (en) * | 2017-02-28 | 2018-09-07 | 比亚迪股份有限公司 | Single battery, dual battery pack, and battery module |
| CN109216641A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Battery protection cover plate assembly, power battery and electric car |
| CN109962315A (en) * | 2017-12-25 | 2019-07-02 | 惠州比亚迪电池有限公司 | A kind of battery pack, vehicle and energy storage device |
| CN109962315B (en) * | 2017-12-25 | 2022-09-09 | 惠州比亚迪电池有限公司 | Battery pack, vehicle and energy storage device |
| CN111490190A (en) * | 2019-01-25 | 2020-08-04 | 比亚迪股份有限公司 | Battery cover plate, battery and vehicle |
| CN111490190B (en) * | 2019-01-25 | 2021-08-10 | 比亚迪股份有限公司 | Battery cover plate, battery and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170801 Address after: Ji Tong Road Huaqiao Economic Development Zone Kunshan city Jiangsu province 215332 No. 699 Patentee after: Suzhou torch Communication Computer Technology Co., Ltd. Address before: The Kunshan Huaqiao Economic Development Zone Suzhou city Jiangsu province Tong Road 215332 No. 699 Patentee before: Wang Wenlin |
|
| TR01 | Transfer of patent right |