CN108075087B - Power lithium battery safety valve - Google Patents
Power lithium battery safety valve Download PDFInfo
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- CN108075087B CN108075087B CN201711200816.9A CN201711200816A CN108075087B CN 108075087 B CN108075087 B CN 108075087B CN 201711200816 A CN201711200816 A CN 201711200816A CN 108075087 B CN108075087 B CN 108075087B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a power lithium battery safety valve which comprises a valve body, an air inlet pipe, a low-pressure exhaust mechanism and a high-pressure exhaust mechanism, wherein the low-pressure exhaust mechanism and the high-pressure exhaust mechanism are arranged in an inner cavity of the valve body; the low-pressure exhaust mechanism comprises a first buffer air pipe, a second buffer air pipe, a low-pressure air inlet pipe, a low-pressure exhaust pipe, a connecting pipe and an air storage cavity, and the high-pressure exhaust mechanism comprises a high-pressure exhaust pipe, wherein two ends of the high-pressure exhaust pipe are respectively connected to the high-pressure exhaust port and the air inlet pipe in a penetrating way; the high-pressure exhaust pipe is arranged on one side, away from the plunger, of the low-pressure air inlet pipe. Through the arrangement of the low-pressure exhaust mechanism and the high-pressure exhaust mechanism, when the pressure of the waste gas is higher, the high pressure can be released instantly to prevent explosion, when the pressure of the waste gas is lower, the waste gas cannot be directly discharged to the atmosphere at low pressure, the air tightness of the safety valve cannot be influenced, and the low-pressure exhaust mechanism is very worthy of popularization.
Description
Technical Field
The invention relates to the technical field of storage battery safety, in particular to a safety valve of a power lithium battery.
Background
The power lithium battery technology is the novel environmental protection energy that just appears in recent years, it is widely used for electric automobile, electric bicycle, wind power generation, solar power generation, the energy storage in fields such as communication, power lithium battery technology is still in the state of sprouting at home, the lithium cell can produce the heat because of electron is in continuous round trip migration at the charging and discharging in-process, charge or discharge, the short circuit condition that factors such as striking or trouble caused all can separate out a large amount of chemical gas, the spark that produces will be to the flammable gas burning that separates out when pressure reaches certain degree or the inside short circuit of battery, cause the battery explosion, give other people the property and bring the threat.
At present, the safety facilities of the power battery produced by some manufacturers mainly comprise two types: 1. the contact point is made of two different metals, and the two metals are connected in series in a circuit of the battery by utilizing different expansion coefficients of the two metals, so that the battery plays a role in protection when the battery is subjected to overcharge, overdischarge, overcurrent or short circuit to deform and break the metal to break an electric shock. The safety valve is easy to generate sparks when the safety valve is opened or closed by electric shock, so that flammable gas in the battery meets the sparks to generate explosion hidden trouble; 2. when the internal pressure of the battery reaches a certain value, the internal pressure breaks the explosion-proof membrane and reduces the pressure to achieve the purpose of explosion prevention, and the defect is that the safety valve cannot be recovered, so that the battery is failed and scrapped.
In order to overcome the defects of the two power battery safety facilities, the power lithium battery ball type safety valve with the application number of '201020282536.4' comprises a valve cover, a valve body, a spring, a ball valve and a sealing ring, and can effectively play a role in safety and explosion prevention; another application number is "201210468220.8" a large capacity power lithium cell relief valve, includes the valve body, and the valve body includes upper valve body and lower valve body, and the relief valve has higher stability and security, simple structure, low in production cost.
Although the above two documents provide good safety performance for the battery and can perform explosion-proof venting, they still have obvious defects: no matter whether the gas pressure generated inside the battery is not large enough, as long as the gas pressure can push the ball valve, the ball valve can be opened immediately to be communicated with the outside atmosphere to release the gas, but the gas tightness of the safety valve can be greatly reduced, so that the battery is influenced.
Disclosure of Invention
The invention aims to provide a safety valve of a power lithium battery, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a power lithium battery safety valve comprises a valve body, an air inlet pipe, a low-pressure exhaust mechanism and a high-pressure exhaust mechanism, wherein the low-pressure exhaust mechanism and the high-pressure exhaust mechanism are arranged in an inner cavity of the valve body;
a moving block is movably arranged in the air inlet pipe, a plunger is fixed at one end of the moving block, the plunger is movably connected with the inner side wall of the air inlet pipe, and one end, far away from the plunger, of the moving block is connected to the top wall of the air inlet pipe through a main spring;
the low-pressure exhaust mechanism comprises a first buffer air pipe, a second buffer air pipe, a low-pressure air inlet pipe, a low-pressure exhaust pipe, a connecting pipe and an air storage cavity, wherein the first buffer air pipe and the second buffer air pipe are arranged between the air inlet pipe and the low-pressure exhaust port;
a base plate is fixed in the gas storage cavity, a through hole is formed in the base plate, an air inlet plug is arranged on one side, close to the buffer air pipe, of the base plate, and the air inlet plug is connected to the base plate through an air inlet spring;
the high-pressure exhaust mechanism comprises a high-pressure exhaust pipe, and two ends of the high-pressure exhaust pipe are respectively connected to the high-pressure exhaust port and the air inlet pipe in a penetrating way;
the high-pressure exhaust pipe is arranged on one side, away from the plunger, of the low-pressure air inlet pipe.
Preferably, a sealing layer is arranged at the joint of the plunger and the inner side wall of the air inlet pipe.
Preferably, a fixed shaft is fixed in the low-pressure air inlet pipe, a torsion spring is arranged on the fixed shaft, a rotating plate is fixedly connected to the torsion spring, the rotating plate is arranged in an inclined mode, and two ends of the rotating plate are movably connected with the inner side wall of the low-pressure air inlet pipe.
Preferably, a baffle is arranged on one side, close to the air inlet pipe, of the inner cavity of the low-pressure air inlet pipe.
Preferably, one side, far away from the air inlet plug, of the substrate is connected with an air outlet spring, the air outlet spring is connected with an air outlet plug, the air outlet plug is movably connected with the side wall of the conical pipe, and the conical pipe is fixedly arranged in the connecting pipe.
Compared with the prior art, the invention has the beneficial effects that:
the valve body of the invention is used for being arranged on a battery, when the internal pressure of the battery is higher than a normal value, the gas pushes the plunger to release the pressure: when the air pressure is higher than a normal value but the numerical value is lower, the air slowly pushes the plunger piston to open the communication with the low-pressure air inlet pipe, the air enters the first buffer air pipe, and after a large amount of air is slowly gathered in the first buffer air pipe, the air in the first buffer air pipe pushes the air inlet plug to enable the air to enter the air storage cavity and then to be released through the low-pressure air outlet through the buffer air pipe, so that the effect of releasing the low pressure is realized; when the air pressure is higher than a normal value and the numerical value is higher, the air rapidly pushes the plunger, and when a small part of the air enters the low-pressure air inlet pipe, most of the air is directly released out through the high-pressure exhaust port through the high-pressure exhaust pipe, so that the high-pressure relief effect is realized.
According to the invention, the rotating plate is arranged, so that when low-pressure gas is released, the low-pressure gas can be buffered and stored in the low-pressure gas inlet pipe, and when the pressure reaches a certain value, the rotating plate rotates, so that the gas can enter the first buffer gas pipe from the low-pressure gas inlet pipe; after buffering trachea one interior gas pressure value slowly increases, the stopper motion is admitted in gaseous promotion, gaseous buffering storage is carried out in getting into the gas storage intracavity, the setting of toper pipe and play gas stopper for the gas in the gas storage intracavity just can promote the stopper motion of giving vent to anger when pressure reaches certain numerical value, release away the gas in the gas storage intracavity through the low pressure gas vent, the setting of rotor plate and play gas stopper falls into three-section gas buffering storage part with low pressure exhaust mechanism, make low pressure gas in the battery can not directly communicate the release with outside atmosphere.
The low-pressure exhaust mechanism and the high-pressure exhaust mechanism are arranged, so that the situation that the waste gas pressure generated in the battery needs to be exhausted can be well met, when the waste gas pressure is high, the waste gas is directly exhausted into the atmosphere through the high-pressure exhaust pipe, high pressure can be released instantly, explosion is prevented, when the waste gas pressure is low, the waste gas is directly buffered, stored and exhausted through the low-pressure exhaust mechanism, the low pressure of the waste gas cannot be directly exhausted into the atmosphere, the low pressure can be slowly released through buffering, the air tightness of the safety valve cannot be influenced, and the safety valve is worthy of popularization.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the structure of the area A of the present invention;
FIG. 3 is an enlarged view of the structure of the region B according to the present invention.
In the figure: 1 valve body, 2 air inlet pipes, 3 high-pressure air outlet ports, 4 low-pressure air outlet ports, 5 moving blocks, 6 main springs, 7 plungers, 8 buffer air pipes I, 9 buffer air pipes II, 10 low-pressure air inlet pipes, 101 dead axle, 102 torsion springs, 103 rotating plates, 104 baffles, 11 low-pressure air outlet pipes, 12 connecting pipes, 121 conical pipes, 122 air outlet plugs, 123 air outlet springs, 13 air storage cavities, 131 base plates, 132 through holes, 133 air inlet springs, 134 air inlet plugs and 14 high-pressure air outlet pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
the utility model provides a power lithium battery safety valve, includes valve body 1, intake pipe 2 and sets up low pressure exhaust mechanism and high pressure exhaust mechanism in the 1 inner chamber of valve body, and valve body 1 installs on the battery, and intake pipe 2 is fixed in the 1 inner chamber of valve body, and intake pipe 2 corresponds fixes in battery exhaust emission department, valve body 1 sets up high pressure gas vent 3 and the low pressure gas vent 4 that runs through the 1 lateral wall of valve body on the inside wall of intake pipe 2 both sides respectively, and high pressure gas vent 3 is used for discharging high pressure waste gas, and low pressure gas vent 4 is used for discharging low pressure waste gas, and the inside waste gas that produces of reply battery that.
The movable moving block 5 is movably arranged in the air inlet pipe 2, one end of the moving block 5 is fixed with a plunger 7, the plunger 7 is movably connected with the inner side wall of the air inlet pipe 2, a sealing layer is arranged at the joint of the plunger 7 and the inner side wall of the air inlet pipe 2, the sealing layer is arranged, the connection airtightness of the plunger 7 and the air inlet pipe 2 is kept in a good state, the moving block 5 is far away from one end of the plunger 7 and is connected to the top wall of the air inlet pipe 2 through a main spring 6, when the waste gas pressure generated inside a battery can push the plunger 7, the plunger 7 is pushed, the moving block 5 is driven to extrude the main spring 6, the plunger 7 is in the moving process, firstly, the connection with the low-.
Low pressure exhaust mechanism, including buffering trachea one 8, buffering trachea two 9, low pressure intake pipe 10, low pressure blast pipe 11, connecting pipe 12 and gas storage chamber 13, exhaust gas gets into from low pressure intake pipe 10, along buffering trachea one 8, connecting pipe 12, buffering trachea two 9 and low pressure blast pipe 11, discharge from low pressure gas vent 4 at last, buffering trachea one 8 and buffering trachea two 9 set up between intake pipe 2 and low pressure gas vent 4, buffering trachea one 8 through low pressure intake pipe 10 and intake pipe 2 through connection, buffering trachea two 9 through low pressure blast pipe 11 and low pressure gas vent 4 through connection, buffering trachea one 8, through connection has connecting pipe 12 between the buffering trachea two 9, be provided with gas storage chamber 13 in the connecting pipe 12, connecting pipe 12 and gas storage chamber 13 intercommunication.
A base plate 131 is fixed in the air storage cavity 13, a through hole 132 is formed in the base plate 131, an air inlet plug 134 is arranged on one side, close to the first buffer air pipe 8, of the base plate 131, the air inlet plug 134 is connected to the base plate 131 through an air inlet spring 133, the connecting pipe 12 is plugged by the air inlet plug 134, and the air inlet plug 134 is pushed to move through air pressure.
When the air pressure is higher than a normal value but the numerical value is lower, the air slowly pushes the plunger 7, the communication with the low-pressure air inlet pipe 10 is opened, the air enters the first buffer air pipe 8, after a large amount of air is slowly gathered in the first buffer air pipe 8, the air in the first buffer air pipe 8 pushes the air inlet plug 134, the air enters the air storage cavity 13 and is then released out through the low-pressure air outlet 4 through the second buffer air pipe 9, and the effect of pressure relief is achieved.
The high-pressure exhaust mechanism comprises a high-pressure exhaust pipe 14, and two ends of the high-pressure exhaust pipe 14 are respectively connected to the high-pressure exhaust port 3 and the air inlet pipe 2 in a penetrating manner.
When the air pressure is higher than the normal value and the numerical value is higher, the air rapidly pushes the plunger 7, and when a small part of the air enters the low-pressure air inlet pipe 10, most of the air is directly released out through the high-pressure air outlet 3 through the high-pressure air outlet pipe 14, so that the effect of instantly releasing the high pressure is realized.
The high-pressure exhaust pipe 14 is arranged on one side, far away from the plunger 7, of the low-pressure air inlet pipe 10, so that when the exhaust gas is low pressure, the exhaust gas is firstly communicated with the low-pressure air inlet pipe 10, and when the exhaust gas is high pressure, the exhaust gas is communicated with the high-pressure exhaust pipe 14.
Preferably, a fixed shaft 101 is fixed in the low-pressure air inlet pipe 10, a torsion spring 102 is arranged on the fixed shaft 101, a rotating plate 103 is fixedly connected to the torsion spring 102, the rotating plate 103 can rotate, the torsion spring 102 can drive the rotating plate 103 to reset and close again, the rotating plate 103 is arranged obliquely, two ends of the rotating plate 103 are movably connected with the inner side wall of the low-pressure air inlet pipe 10, the low-pressure air inlet pipe 10 can be divided into two sections through the arrangement of the rotating plate 103, and the air is buffered and stored through a first buffer air pipe 8.
The baffle 104 is arranged on one side, close to the air inlet pipe 2, of the inner cavity of the low-pressure air inlet pipe 10, so that when waste gas enters the low-pressure air inlet pipe 10, the rotating plate 103 can be better pushed to rotate, and the first buffer air pipe 8 is opened and communicated.
According to the invention, the rotating plate is arranged, so that low-pressure gas can be buffered and stored in the low-pressure gas inlet pipe 10 when being released, and when the pressure reaches a certain value, the rotating plate 103 rotates, so that the gas can enter the first buffer gas pipe 8 from the low-pressure gas inlet pipe 10.
As a preferred, the base plate 131 is connected with the gas outlet spring 123 on the side away from the gas inlet plug 134, the gas outlet spring 123 is connected with the gas outlet plug 122, the gas outlet plug 122 is movably connected with the side wall of the tapered tube 121, the tapered tube 121 is fixedly arranged in the connecting tube 12, after the waste gas enters the gas storage cavity 13, the gas pushes the gas outlet plug 122 to release the gas, and the gas outlet plug 122 is arranged, so that the gas storage cavity 13 can realize the effects of buffering and storing the waste gas.
After the gas pressure value slowly increases in buffering trachea 8, gaseous promotion stopper 134 motion of admitting air, gaseous buffering storage carries out in getting into gas storage chamber 13, conical tube 121 and the setting of stopper 122 of giving vent to anger, make the gas in the gas storage chamber 13 when pressure reaches certain numerical value, just can promote the stopper 122 motion of giving vent to anger, release away the gas in the gas storage chamber 13 through low pressure gas vent 4, the setting of rotor plate 103 and stopper 122 of giving vent to anger, divide into the gaseous buffering storage part of three-section with low pressure exhaust mechanism, make low pressure gas in the battery can not directly communicate the release with outside atmosphere.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a power lithium cell relief valve, includes valve body (1), intake pipe (2) and sets up low pressure exhaust mechanism and high pressure exhaust mechanism in valve body (1) inner chamber, its characterized in that: the air inlet pipe (2) is fixed in the inner cavity of the valve body (1), and a high-pressure exhaust port (3) and a low-pressure exhaust port (4) which penetrate through the side wall of the valve body (1) are respectively formed in the inner side walls of the valve body (1) on the two sides of the air inlet pipe (2);
a moving block (5) is movably arranged in the air inlet pipe (2), a plunger (7) is fixed at one end of the moving block (5), the plunger (7) is movably connected with the inner side wall of the air inlet pipe (2), and one end, far away from the plunger (7), of the moving block (5) is connected to the top wall of the air inlet pipe (2) through a main spring (6);
the low-pressure exhaust mechanism comprises a first buffer air pipe (8), a second buffer air pipe (9), a low-pressure air inlet pipe (10), a low-pressure exhaust pipe (11), a connecting pipe (12) and a gas storage cavity (13), wherein the first buffer air pipe (8) and the second buffer air pipe (9) are arranged between the air inlet pipe (2) and the low-pressure exhaust port (4), the first buffer air pipe (8) is communicated with the air inlet pipe (2) through the low-pressure air inlet pipe (10), the second buffer air pipe (9) is communicated with the low-pressure exhaust port (4) through the low-pressure exhaust pipe (11), the connecting pipe (12) is communicated between the first buffer air pipe (8) and the second buffer air pipe (9), and the gas storage cavity (13) is arranged in;
a base plate (131) is fixed in the air storage cavity (13), a through hole (132) is formed in the base plate (131), an air inlet plug (134) is arranged on one side, close to the first buffer air pipe (8), of the base plate (131), and the air inlet plug (134) is connected to the base plate (131) through an air inlet spring (133);
the high-pressure exhaust mechanism comprises a high-pressure exhaust pipe (14), and two ends of the high-pressure exhaust pipe (14) are respectively connected to the high-pressure exhaust port (3) and the air inlet pipe (2) in a penetrating manner;
the high-pressure exhaust pipe (14) is arranged on one side, far away from the plunger (7), of the low-pressure air inlet pipe (10).
2. The safety valve for lithium battery of claim 1, wherein: and a sealing layer is arranged at the joint of the plunger (7) and the inner side wall of the air inlet pipe (2).
3. The safety valve for lithium battery of claim 1, wherein: the low pressure intake pipe (10) internal fixation has dead axle (101), be provided with torsion spring (102) on dead axle (101), fixedly connected with rotor plate (103) on torsion spring (102), rotor plate (103) slope sets up, and rotor plate (103) both ends and low pressure intake pipe (10) inside wall swing joint.
4. The safety valve for lithium battery according to claim 3, wherein: and a baffle (104) is arranged on one side of the inner cavity of the low-pressure air inlet pipe (10) close to the air inlet pipe (2).
5. The safety valve for lithium battery of claim 1, wherein: the base plate (131) is kept away from air inlet plug (134) one side and is connected with air outlet spring (123), be connected with air outlet plug (122) on the air outlet spring (123), air outlet plug (122) and conical tube (121) lateral wall swing joint, conical tube (121) fixed set up in connecting pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711200816.9A CN108075087B (en) | 2017-11-27 | 2017-11-27 | Power lithium battery safety valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711200816.9A CN108075087B (en) | 2017-11-27 | 2017-11-27 | Power lithium battery safety valve |
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| CN108075087A CN108075087A (en) | 2018-05-25 |
| CN108075087B true CN108075087B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711200816.9A Active CN108075087B (en) | 2017-11-27 | 2017-11-27 | Power lithium battery safety valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114497875B (en) * | 2022-01-27 | 2023-04-28 | 陈星翰 | Vacuum negative pressure structure of lithium battery core |
| CN115179778B (en) * | 2022-09-13 | 2023-03-10 | 西安航空学院 | Automatic control temperature's explosion-proof battery support for new energy automobile |
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| JPH08153508A (en) * | 1994-11-28 | 1996-06-11 | Toshiba Battery Co Ltd | Explosionproof battery |
| JP3213635B2 (en) * | 1992-07-17 | 2001-10-02 | 東芝電池株式会社 | Cylindrical lithium ion secondary battery |
| CN201812870U (en) * | 2010-08-05 | 2011-04-27 | 李学智 | Ball-type safety valve with power lithium batteries |
| CN102969469A (en) * | 2012-11-19 | 2013-03-13 | 广东志成冠军集团有限公司 | Safety valve for high-capacity power lithium battery |
| CN205335327U (en) * | 2016-01-29 | 2016-06-22 | 无锡索亚特试验设备有限公司 | Explosion -proof pressure relief device of power battery high low temperature test equipment |
| CN206471390U (en) * | 2017-01-24 | 2017-09-05 | 临汾市沃特玛电池有限公司 | A kind of battery case safety protection structure |
-
2017
- 2017-11-27 CN CN201711200816.9A patent/CN108075087B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3213635B2 (en) * | 1992-07-17 | 2001-10-02 | 東芝電池株式会社 | Cylindrical lithium ion secondary battery |
| JPH08153508A (en) * | 1994-11-28 | 1996-06-11 | Toshiba Battery Co Ltd | Explosionproof battery |
| CN201812870U (en) * | 2010-08-05 | 2011-04-27 | 李学智 | Ball-type safety valve with power lithium batteries |
| CN102969469A (en) * | 2012-11-19 | 2013-03-13 | 广东志成冠军集团有限公司 | Safety valve for high-capacity power lithium battery |
| CN205335327U (en) * | 2016-01-29 | 2016-06-22 | 无锡索亚特试验设备有限公司 | Explosion -proof pressure relief device of power battery high low temperature test equipment |
| CN206471390U (en) * | 2017-01-24 | 2017-09-05 | 临汾市沃特玛电池有限公司 | A kind of battery case safety protection structure |
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