CN201877473U - Cover plate for lithium battery - Google Patents
Cover plate for lithium battery Download PDFInfo
- Publication number
- CN201877473U CN201877473U CN2010206343286U CN201020634328U CN201877473U CN 201877473 U CN201877473 U CN 201877473U CN 2010206343286 U CN2010206343286 U CN 2010206343286U CN 201020634328 U CN201020634328 U CN 201020634328U CN 201877473 U CN201877473 U CN 201877473U
- Authority
- CN
- China
- Prior art keywords
- explosion
- cover plate
- valve body
- proof valve
- 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.)
- Expired - Fee Related
Links
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 discloses a cover plate for a lithium battery and belongs to the cover plate for the dynamic lithium battery with high capacity, in particular to the cover plate for the battery with a release pressure adjustable explosion-proof device, wherein the cover plate is provided with an explosion-proof valve body; a valve hole communicated with the inside of the battery is arranged at the lower part of the up-down penetrated explosion-proof valve body and is a stepped hole for clamping a sealing pad to seal the battery; a jack screw is arranged at the upper part of an inner cavity of the explosion-proof valve body; a spring is arranged in the inner cavity of the explosion-proof valve body; the upper end of the spring is connected with the jack screw; and the lower end of the spring is connected with the sealing pad. When the internal pressure of the battery exceeds the service standard, an explosion-proof valve on the cover plate can be opened in time to release the internal pressure; and after the internal pressure restores to the normal level, the explosion-proof valve is closed and the battery restores the normal work. According to the cover plate, accidents can be avoided and the battery can be effectively protected.
Description
Technical field
The utility model relates to a kind of large-capacity power lithium battery cover plate, especially has the battery cover board of the adjustable explosion-protection equipment of release pressure.
Background technology
Because China's rapid economy development, the energy and environmental problem become increasingly conspicuous, and the rise day by day of oil price makes energy problem become internal and international all in all problem.Actively research and development and popularization new forms of energy have potential great economic benefit to saving resource and alleviating environmental pollution.Wherein dynamic lithium battery is the focus of countries nowadays research and development.Lithium battery is a kind of novel energy system, the favor that its light weight, Gao Rong, long-life, self-discharge rate are low, memory-less effect, free of contamination advantage obtain the consumer gradually.Its market has been expanded to multiple fields such as camera, DVD, model plane, toy by mobile phone.In recent years, the application of dynamic lithium battery on main equipments such as electronic hardware ﹠ tools, electric bicycle, electric motor car receives publicity day by day, and these equipment requirements batteries possess conditions such as big capacity, high power, dynamic lithium battery has certain advantage in these areas, thereby have broad application prospects and potential great economic benefit, thereby also become the focus that various countries research and develop.
The problem that lithium battery mainly exists is a safety issue, electrokinetic cell particularly, and it is more outstanding that safety issue seems.The safety problem of dynamic lithium battery generally is meant because electrokinetic cell improper use, disabler, accident and abuse cause the leakage of battery bulging, temperature, pressure to exceed use standard even blast and accident such as on fire, thereby causes user's safety of life and property to be on the hazard.Wherein the blast and on fire be the most serious security incident.The abuse of lithium ion battery also can cause it on fire from explosion, and its inner reason is very complicated, but major part causes by temperature, pressure is too high, and the two cause major part can ascribe the thermal runaway reaction of lithium ion battery, just exothermic reaction to.These exothermic reactions generally have: the decomposition of battery electrode SEI film (solid electrolyte interface film), the reaction of embedded lithium and solvent, the decomposition reaction of positive electrode etc.Existing battery cover board generally all is equipped with rupture pressure disc, and when battery operated undesired when causing internal pressure too high, rupture pressure disc breaks, the internal pressure of releasing, thus avoided the explosion accident of battery, but being battery, thing followed problem scraps.
Summary of the invention
At dynamic lithium battery safety problem in use; particularly thereby the too high cell internal pressure that causes of temperature rise that causes because of a variety of causes exceeds the use standard and washes the situation that rupture pressure disc causes battery to scrap open; the utility model provides a kind of lithium battery cover plate of effectively protecting battery when avoiding accident; when above-mentioned situation occurring; explosion-proof valve on the cover plate can in time be opened, and the cell internal pressure of releasing is after internal pressure is recovered normally; explosion-proof valve is closed, the battery recovery operate as normal.
The technical scheme that its technical problem that solves the utility model adopts is: cover plate is provided with the explosion-proof valve valve body, the valve opening of the bottom of the explosion-proof valve valve body of up/down perforation for communicating with inside battery, and described valve opening is to be used to block the stepped hole of sealing gasket with sealed cell; Explosion-proof valve body cavity top is provided with jackscrew; Spring places the explosion-proof valve body cavity, and the spring upper end is connected with jackscrew, and the spring lower end is connected with sealing gasket.
Described explosion-proof valve valve body upper inside wall is the internal thread that is used for cooperating with the jackscrew external screw thread with the regulating spring degree of tightness.
Described sealing gasket comprises plain cushion and rubber blanket.
Described explosion-proof valve valve outer wall is provided with projection, and explosion-proof valve valve body lower portion outer wall is provided with and is used for cooperating the explosion-proof valve valve body is fixed in the external screw thread of cover plate with nut.
Described cover plate is provided with the positive pole bolt that links to each other with the anode post, the negative pole bolt that links to each other with the battery cathode post.
Be useful on the hole of exhaust on the described jackscrew.
The valve opening rubber seal that the utility model explosion-proof valve communicates with inside battery, but the tightness even regulation of sealing, but that is to say the pressure even regulation of opening valve port; The double liquid injection hole usefulness of doing of valve opening must on the cover board not opened liquid injection hole in addition.When cell internal pressure exceeds the use standard, rubber blanket in the explosion-proof valve inner chamber on the cover plate lifts, the inside battery gas release is gone into the explosion-proof valve inner chamber, gas is discharged by the hole on the jackscrew, the cell internal pressure of releasing, after internal pressure was recovered normally, the rubber blanket in the explosion-proof valve inner chamber was closed under the effect of spring, the battery recovery operate as normal.Before battery comes into operation, valve port is opened pressure and be adjusted to rated value, guaranteed that battery in use can in time be discharged because of a variety of causes causes too high internal pressure.The beneficial effects of the utility model are: when avoiding accident, protected battery.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Among the figure: 1, anode post, 2, the battery cathode post, 3, pad in the insulation, 4, cover plate, 5, the explosion-proof valve valve body, 6, jackscrew, 7, spring, 8, " O " type circle, 9, plain cushion, 10, rubber blanket, 11, A sealing gasket, 12, the B sealing gasket, 13, the A plain cushion, 14, positive pole bolt, 15, nut, 16, the B plain cushion, 17, the outer pad of insulation, 18, the C plain cushion, 19, negative pole bolt, 20, negative pole in flakes, 21, the D plain cushion, 22, the A bolt, 23, positive pole in flakes, 24, the E plain cushion, 25, the B bolt, 26, battery in flakes.
Embodiment
Among Fig. 1, cover plate 4 is provided with the explosion-proof valve valve body 5 of up/down perforation, and the bottom of explosion-proof valve valve body 5 is the valve opening that communicates with inside battery, and described valve opening is to be used to block plain cushion 9 and rubber blanket 10 stepped hole with sealed cell.Explosion-proof valve valve body 5 inner chamber tops are provided with jackscrew 6, and explosion-proof valve valve body 5 upper inside wall are the internal thread that is used for cooperating with jackscrew 6 external screw threads with regulating spring 7 degrees of tightness; Spring 7 places explosion-proof valve valve body 5 inner chambers, and spring 7 upper ends are connected with jackscrew 6, and spring 7 lower ends are connected with plain cushion 9.Explosion-proof valve valve body 5 outer walls are provided with projection, and explosion-proof valve valve body 5 bottom outer walls are provided with and are used for cooperating explosion-proof valve valve body 5 is fixed in the external screw thread of cover plate 4 with nut.The projection at explosion-proof valve valve body 5 outer walls middle part is blocked cover plate 4, and rice served with meat and vegetables on top 4 is fixed in through nut in the bottom.Cover plate 4 is provided with the positive pole bolt 14 that links to each other with the anode post, the negative pole bolt 19 that links to each other with the battery cathode post.Cover plate 4 is a metal material.
Pad 3, the outer pad 17 of insulation, A sealing gasket 11, B sealing gasket 12, B plain cushion 16, cover plate 4 closely combine by nut 15 in anode post 1, battery cathode post 2 and the insulation, anode post 1, battery cathode post 2, cover plate 4 be mutually insulated between any two, the effect of A sealing gasket 11, B sealing gasket 12 is isolated electrolyte, prevents its seepage; Explosion-proof valve valve body 5 and " O " type circle 8 usefulness nuts 15 are fastened on the cover plate 4, rubber blanket 10, plain cushion 9, spring 7, jackscrew 6 become pressure regulating mechanism in explosion-proof valve valve body 5 combination of lumens, jackscrew 6 rotates at inner chamber, the degree of tightness of may command spring 7, the elastic force of spring 7 is delivered to rubber blanket 10 by plain cushion 9, and valve opening is sealed up.Positive pole bolt 14, A plain cushion 13, negative pole bolt 19, C plain cushion 18, battery 26 string and the connections that are used between the battery in flakes.Negative pole in flakes 20, D plain cushion 21, A bolt 22, anodal in flakes 23, E plain cushion 24, B bolt 25 be used for the connection between inside battery lug and the battery electrode column.Owing to adopted the bolt crimping, contact-making surface is big, connection is reliable, and contact resistance is little, has reduced caloric value.
Among Fig. 2,1 is the anode post, 23 be positive pole in flakes, 24 is the E plain cushion, 25 is the B bolt.
Claims (6)
1. lithium battery cover plate, it is characterized in that: cover plate (4) is provided with explosion-proof valve valve body (5), the valve opening of the bottom of the explosion-proof valve valve body (5) of up/down perforation for communicating with inside battery, described valve opening is to be used to block the stepped hole of sealing gasket with sealed cell; Explosion-proof valve valve body (5) inner chamber top is provided with jackscrew (6); Spring (7) places explosion-proof valve valve body (5) inner chamber, and spring (7) upper end is connected with jackscrew (6), and spring (7) lower end is connected with sealing gasket.
2. lithium battery cover plate according to claim 1 is characterized in that: described explosion-proof valve valve body (5) upper inside wall is for being used for cooperating with jackscrew (6) external screw thread the internal thread with regulating spring (7) degree of tightness.
3. lithium battery cover plate according to claim 1 is characterized in that: described sealing gasket comprises plain cushion (9) and rubber blanket (10).
4. lithium battery cover plate according to claim 1, it is characterized in that: described explosion-proof valve valve body (5) outer wall is provided with projection, and explosion-proof valve valve body (5) bottom outer wall is provided with and is used for cooperating explosion-proof valve valve body (5) is fixed in the external screw thread of cover plate (4) with nut.
5. lithium battery cover plate according to claim 1 is characterized in that: described cover plate (4) is provided with the positive pole bolt (14) that links to each other with the anode post, the negative pole bolt (19) that links to each other with the battery cathode post.
6. lithium battery cover plate according to claim 1 is characterized in that: the hole that is useful on exhaust on the described jackscrew (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206343286U CN201877473U (en) | 2010-11-30 | 2010-11-30 | Cover plate for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206343286U CN201877473U (en) | 2010-11-30 | 2010-11-30 | Cover plate for lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877473U true CN201877473U (en) | 2011-06-22 |
Family
ID=44165383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206343286U Expired - Fee Related CN201877473U (en) | 2010-11-30 | 2010-11-30 | Cover plate for lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877473U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789518A (en) * | 2016-04-06 | 2016-07-20 | 河南环宇赛尔新能源科技有限公司 | Soft-package lithium ion battery with safety valve |
| CN106505166A (en) * | 2016-11-25 | 2017-03-15 | 北京新能源汽车股份有限公司 | Valve device, battery pack shell and electric automobile |
| CN107579198A (en) * | 2017-08-30 | 2018-01-12 | 安徽环鑫电子有限公司 | A kind of capping structure with liquid injection hole explosion-proof valve |
| CN109148748A (en) * | 2018-10-18 | 2019-01-04 | 天津中聚新能源科技有限公司 | A kind of anti-overcharge battery cover board and its lithium battery of application |
-
2010
- 2010-11-30 CN CN2010206343286U patent/CN201877473U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789518A (en) * | 2016-04-06 | 2016-07-20 | 河南环宇赛尔新能源科技有限公司 | Soft-package lithium ion battery with safety valve |
| CN106505166A (en) * | 2016-11-25 | 2017-03-15 | 北京新能源汽车股份有限公司 | Valve device, battery pack shell and electric automobile |
| CN106505166B (en) * | 2016-11-25 | 2019-03-15 | 北京新能源汽车股份有限公司 | Valve device, battery pack shell and electric automobile |
| CN107579198A (en) * | 2017-08-30 | 2018-01-12 | 安徽环鑫电子有限公司 | A kind of capping structure with liquid injection hole explosion-proof valve |
| CN109148748A (en) * | 2018-10-18 | 2019-01-04 | 天津中聚新能源科技有限公司 | A kind of anti-overcharge battery cover board and its lithium battery of application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202178311U (en) | Lithium ion battery modular structure | |
| CN201877473U (en) | Cover plate for lithium battery | |
| CN202217738U (en) | Low-voltage anti-explosion cylindrical lithium ion battery | |
| CN203367409U (en) | Sealant-nail type power lithium battery adopting liquid injection hole structure | |
| CN106972121A (en) | Power lithium cell safety explosion-proof apron | |
| CN104993093A (en) | Lithium ion battery heavy current protective device and lithium ion battery | |
| CN202839773U (en) | Power battery safety top cap | |
| CN204303929U (en) | Novel high-capacity soft package lithium battery group | |
| CN2845183Y (en) | Sefety explosion-proof screw cap of cylindrical lithium ion battery | |
| CN2854822Y (en) | Explosion-proof device combined with lithium ion battery | |
| CN207587775U (en) | Explosion-proof apron of power lithium cell duplicate protection | |
| CN102044638A (en) | Lithium-manganese battery case and lithium-manganese battery | |
| CN201868523U (en) | Lithium ion power battery with safety valve | |
| CN106785195A (en) | A kind of lithium-ion-power cell and lithium battery module | |
| CN206610880U (en) | A kind of lithium ion battery | |
| CN202308122U (en) | Aluminum membrane type explosion-proof valve of high-capacity lithium ion battery | |
| CN201918444U (en) | Explosion-proof cap of power-type lithium ion battery | |
| CN201069792Y (en) | Chargeable battery diplex explosion-prevention device | |
| CN102324552A (en) | Low-voltage explosion-proof cylindrical lithium-ion battery | |
| CN201877491U (en) | Novel high-capacity lithium ion battery | |
| CN100533840C (en) | Lithium ion power cell | |
| US20140154540A1 (en) | Power battery cover plate equipped with a current interruption device | |
| CN103151479A (en) | Energy storage battery for coal mine and battery core thereof | |
| CN202217713U (en) | Low-voltage anti-explosion combined cover for lithium ion battery | |
| CN207282544U (en) | A kind of lithium-ion-power cell cap structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20131130 |