CN106969980B - Battery anti-explosion valve test system - Google Patents
Battery anti-explosion valve test system Download PDFInfo
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- CN106969980B CN106969980B CN201710135852.5A CN201710135852A CN106969980B CN 106969980 B CN106969980 B CN 106969980B CN 201710135852 A CN201710135852 A CN 201710135852A CN 106969980 B CN106969980 B CN 106969980B
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- explosion
- cabinet
- chamber
- test system
- battery anti
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
Abstract
The invention discloses a kind of battery anti-explosion valve test systems, comprising: cabinet；Partition component, partition component are arranged in cabinet and housing interior volume are separated into slow pressure test chamber and blast analogue chamber；Explosion-proof valve, explosion-proof valve is arranged on cabinet and corresponding slow pressure test chamber；First gas-charging connection and the second gas-charging connection, the first gas-charging connection is arranged on cabinet and corresponding slow pressure test chamber, and the second gas-charging connection is arranged on cabinet and corresponding blast analogue chamber.Battery anti-explosion valve test system according to an embodiment of the present invention, partition component is arranged in cabinet and housing interior volume is separated into slow pressure test chamber and blast analogue chamber, and corresponding slow pressure test chamber is arranged on cabinet in explosion-proof valve, first gas-charging connection and the second gas-charging connection are respectively inflated slow pressure test chamber and blast analogue chamber, the verifying to explosion-proof valve properties is realized by slow pressure modes of inflation and simulated explosion mode, and the battery anti-explosion valve test system structure is simple, convenient test and quickly.
Description
Technical field
The invention belongs to technical field of new energy, in particular to battery anti-explosion valve test system.
Background technique
With the rapid development of electric car, battery pack gets over safety requirements as electric car core key part
Come higher.Under extreme case, phenomena such as battery pack will appear short circuit, rises battery pack internal temperature rapidly, when in battery pack
When the pressure in portion reaches preset pressure value, explosion-proof valve opens Quick air-discharge, prevents battery pack from exploding.
Therefore, it is the reliability for guaranteeing explosion-proof valve, needs to verify its properties before design phase or batch dispatch from the factory and refer to
Mark, and to the response condition of different air pressures and explosion, to improve the safety of battery system.
Summary of the invention
The present invention is directed to solve one of above-mentioned technical problem at least to a certain extent.
For this purpose, the present invention proposes a kind of battery anti-explosion valve test system, the battery anti-explosion valve test system structure is simple, surveys
Examination is convenient and reliable.
Battery anti-explosion valve test system according to an embodiment of the present invention includes: cabinet；Partition component, the partition component are set
It sets in the cabinet and the housing interior volume is separated into slow pressure test chamber and blast analogue chamber；Explosion-proof valve, it is described anti-
Quick-fried valve is arranged on the cabinet and the corresponding slow pressure test chamber；First gas-charging connection and the second gas-charging connection, described first
Gas-charging connection is arranged on the cabinet and the corresponding slow pressure test chamber, second gas-charging connection are arranged on the cabinet
And the corresponding blast analogue chamber；Wherein the battery anti-explosion valve test system has slow pressure modes of inflation and simulated explosion mould
Formula, wherein when the battery anti-explosion valve test system is in the slow pressure modes of inflation, by first gas-charging connection to
The slow pressure tests interacvity air-filling and the partition component opens the slow pressure test chamber with the blast analogue chamber airtight partition；
When the battery anti-explosion valve test system is in the simulated explosion mode, by second gas-charging connection to the explosion
Simulation interacvity air-filling simultaneously breaks through at least part of the partition component with simulated explosion.
Battery anti-explosion valve test system according to an embodiment of the present invention, the partition component are arranged in the cabinet and will
The housing interior volume is separated into slow pressure test chamber and blast analogue chamber, and corresponding slow pressure is arranged on cabinet in explosion-proof valve and is surveyed
Chamber is tried, the first gas-charging connection and the second gas-charging connection are respectively inflated slow pressure test chamber and blast analogue chamber, pass through slow pressure
Modes of inflation and simulated explosion mode realize the verifying to explosion-proof valve properties, the battery anti-explosion valve test system structure letter
Single, convenient test and quickly.
In addition, battery anti-explosion valve test system according to an embodiment of the present invention, can also have following additional technology special
Sign:
According to one embodiment of present invention, the partition component includes: to be in the battery anti-explosion valve test system
The separation membrane that can be broken through when the simulated explosion mode.
According to one embodiment of present invention, the separation membrane is flexible separating film.
According to one embodiment of present invention, the separation membrane is rubber membrane.
According to one embodiment of present invention, the partition component further include: demarcation plate, fixed part, the demarcation plate are solid
It is scheduled in the cabinet, demarcation plate through-hole is provided on the demarcation plate, the separation membrane is fixed on described by the fixed part
On demarcation plate and the separation membrane closes the demarcation plate through-hole.
According to one embodiment of present invention, the fixed part includes: flange and threaded fastener, and the flange surrounds institute
The setting of demarcation plate through-hole is stated, the separation membrane is pressed on the demarcation plate by the flange, and the threaded fastener is used for will
The flange is fixed on the demarcation plate.
According to one embodiment of present invention, the separation membrane includes: central part and edge part, and the edge part is around institute
Central part setting is stated, the edge part is pressed on the demarcation plate by the flange.
According to one embodiment of present invention, the central part is hemispherical.
According to one embodiment of present invention, it is additionally provided with first pressure gauge and second pressure gauge on the cabinet, it is described
First pressure gauge and the second pressure gauge are separately positioned on the cabinet, and the first pressure gauge corresponds to the slow pressure test
Chamber, the second pressure gauge correspond to the blast analogue chamber.
According to one embodiment of present invention, transparent observation window, the observation window and institute are additionally provided on the cabinet
It is corresponding to state slow pressure test chamber.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the perspective view of battery anti-explosion valve test system according to an embodiment of the invention；
Fig. 2 is the perspective view of another angle of battery anti-explosion valve test system according to an embodiment of the invention；
Fig. 3 is the perspective view of another angle of battery anti-explosion valve test system according to an embodiment of the present invention, wherein institute
It is in the open state to state cabinet.
Appended drawing reference:
Battery anti-explosion valve test system 100；
Cabinet 10；Slow pressure test chamber 11；Blast analogue chamber 12；Observation window 13；
Partition component 20；Separation membrane 21；Demarcation plate 22；Fixed part 23；Flange 231；Threaded fastener 232；
Explosion-proof valve 30；
First gas-charging connection 40；
Second gas-charging connection 50；
First pressure gauge 60；
Second pressure gauge 70.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Battery anti-explosion valve test system 100 according to an embodiment of the present invention is described referring to Fig. 1 to Fig. 3.The battery is anti-
Quick-fried valve test system 100 can be used for testing the leakproofness of explosion-proof valve 30 and the response condition to various pressure, for example, reaching
When the cracking pressure of setting, whether explosion-proof valve 30 can be opened；Or when reaching burst pressure, at least one of partition component 20
Point whether can be broken through and whether explosion-proof valve 30 can be opened so that gas is quickly discharged.
As shown in Fig. 1 combination Fig. 2 and Fig. 3, battery anti-explosion valve test system 100 includes: cabinet 10, partition component 20 and prevents
Quick-fried valve 30.
Specifically, partition component 20 is arranged in cabinet 10 and 10 inner space of cabinet is separated into slow pressure 11 He of test chamber
Blast analogue chamber 12.Explosion-proof valve 30 is arranged on cabinet 10 and corresponding slow pressure test chamber 11.As shown in figure 3,20 edge of partition component
The length direction (left and right directions in such as Fig. 3) of cabinet 10 is set in cabinet 10, and 10 inner space of cabinet is separated into and is located at
The slow pressure test chamber 11 of upside and blast analogue chamber 12 positioned at downside.It is understood that above-mentioned be only illustrative, not
The limitation to the claimed range of the present invention, partition component 20 can also along cabinet 10 short transverse it is (upper in such as Fig. 3
Lower direction) it is set in cabinet 10, so that 10 inner space of cabinet is separated into slow 11 He of pressure test chamber positioned at the left and right sides
Blast analogue chamber 12.
Wherein, explosion-proof valve 30 is connected to slow pressure test chamber 11 and is used to open or closes slow pressure test chamber 11, in slow pressure test
When pressure in chamber 11 is less than the cracking pressure of setting, the slow pressure test chamber 11 of the closing of explosion-proof valve 30 delays pressure test chamber and is in sealing
State.When the pressure in slow pressure test chamber 11 is equal to greatly the cracking pressure of setting, slow pressure test chamber 11 opening passes through explosion-proof valve
30 gas is discharged rapidly.
First gas-charging connection 40 is arranged on cabinet 10 and corresponding slow pressure test chamber 11, the second gas-charging connection 50 are arranged in case
On body 10 and correspond to blast analogue chamber 12.In other words, it is inflated by the first gas-charging connection 40 to slow pressure test chamber 11, passes through second
Gas-charging connection 50 is inflated to blast analogue chamber 12.
Battery anti-explosion system according to an embodiment of the present invention has slow pressure modes of inflation and simulated explosion mode.
Specifically, when battery anti-explosion valve test system 100 is in slow pressure modes of inflation, by the first gas-charging connection 40 to
It is inflated in slow pressure test chamber 11 and partition component 20 opens slow pressure test chamber 11 with 12 airtight partition of blast analogue chamber.It is anti-in battery
When quick-fried valve test system 100 is in simulated explosion mode, inflates and incite somebody to action into blast analogue chamber 12 by the second gas-charging connection 50
At least part of partition component 20 is broken through with simulated explosion.
Slow pressure modes of inflation is used to test the leakproofness of explosion-proof valve 30 and when setting pressure reaches cracking pressure, explosion-proof valve
Whether 30 the gas in slow pressure test chamber 11 is discharged rapidly.Simulated explosion mode is for testing at least the one of partition component 20
When part is broken through, whether explosion-proof valve 30 gas in slow pressure test chamber 11 and blast analogue chamber 12 is discharged rapidly, and measures whole
The pressure release amount of a battery anti-explosion valve test system 100, wherein the aeration speed of the first gas-charging connection 40 can be slower than the second inflation
The aeration speed of connector 50.Hereby it is achieved that the verifying to 30 performance indexes of explosion-proof valve, for guaranteeing the safety of battery pack
Important reference frame is provided.
Battery anti-explosion valve test system 100 according to an embodiment of the present invention, partition component 20 are arranged in cabinet 10 and will
10 inner space of cabinet is separated into slow pressure test chamber 11 and blast analogue chamber 12, and explosion-proof valve 30 is arranged on cabinet 10 and is corresponded to
Slow pressure test chamber 11, the first gas-charging connection 40 and the second gas-charging connection 50 respectively to slow pressure test chamber 11 and blast analogue chamber 12 into
Row inflation realizes the verifying to 30 properties of explosion-proof valve, the battery anti-explosion by slow pressure modes of inflation and simulated explosion mode
100 structure of valve test system is simple, convenient test and quickly.
In some embodiments of the invention, partition component 20 includes: to be in simulation in battery anti-explosion valve test system 100
The separation membrane 21 that can be broken through when burst mode.When the air pressure in blast analogue chamber 12 reaches the pressure that separation membrane 21 can be born
When (burst pressure), separation membrane 21 ruptures so that the gas in blast analogue chamber 12 enters slow pressure test chamber 11, and passes through explosion-proof
Quickly gas is discharged for valve 30, and so as to analogue simulation battery pack explosion phenomenon and validity test explosion-proof valve 30 is in burst pressure
Pressure release amount when lower.
In some optional embodiments, partition component 20 includes: demarcation plate 22 and fixed part 23.Demarcation plate 22 is fixed on case
In body 10, it is provided with demarcation plate through-hole on demarcation plate 22, separation membrane 21 is fixed on demarcation plate 22 and separation membrane by fixed part 23
21 closing demarcation plate through-holes.As shown in figure 3, demarcation plate 22 extends parallel to the bottom plate of cabinet 10 along the length direction of cabinet 10
It is set in cabinet 10 with top plate, to being separated into 10 inner space of cabinet positioned at the slow pressure test chamber 11 of upside and under being located at
The blast analogue chamber 12 of side.
Separation membrane 21 is fixed on demarcation plate 22 by the top that fixed part 23 is set to demarcation plate 22 to be led to closing demarcation plate
Hole.To guarantee that battery anti-explosion valve test system 100 when carrying out slow pressure modes of inflation, delays pressure test chamber 11 and blast analogue chamber
12 are in a closed state, and gas, which can not postpone, presses test chamber 11 to enter in blast analogue chamber 12, and gas also can not be from explosion mould
Quasi- chamber 12 enters in slow pressure test chamber 11.
Specifically, fixed part 23 includes: flange 231 and threaded fastener 232.Flange 231 is arranged around demarcation plate through-hole,
Separation membrane 21 is pressed on demarcation plate 22 by flange 231, and threaded fastener 232 is used to flange 231 being fixed on demarcation plate 22.
As shown in figure 3, the generally circular plate body of flange 231, annular plate are crimped on separation membrane 21.That is at least partly 21 quilt of separation membrane
It is located between flange 231 and demarcation plate 22, and flange 231 and separation membrane 21 is fixed on by separation by threaded fastener 232
On plate 22.It, can be with thus, it is possible to separation membrane 21 is securely provided on demarcation plate 22, and when needing replacing separation membrane 21
Threaded fastener 232 is unscrewed to remove separation membrane 21.
In other embodiments of the invention, separation membrane 21 includes: central part and edge part.Edge part is set around central part
It sets, edge part is pressed on demarcation plate 22 by flange 231.That is the edge part lower surface and the demarcation plate 22 that are located in flange 231
Between upper surface, central part is correspondingly arranged with 22 through-hole of demarcation plate, hereby it is achieved that separation membrane is fixed on demarcation plate 22.
Further, central part is hemispherical.As shown in figure 3, central part towards slow pressure beyond surveying where demarcation plate 22
It tries chamber 11 to protrude, i.e., central part forms gas by being recessed towards the one of blast analogue chamber 12 laterally toward the slow other side for pressing test chamber 11
Capsule.The deformability of separation membrane 21 is increased as a result, can make the situation of the preferably simulated battery packet explosion of separation membrane 21.
In some optional examples, separation membrane 21 is flexible separating film 21.Specifically, separation membrane 21 can be rubber membrane.Rubber
Glue film has preferable extensibility, flexibility and crushing resistance, simulates different battery packs by adjusting the burst pressure of rubber membrane
Explosion phenomenon.
In other of the invention embodiments, as shown in Figure 1-Figure 3, first pressure gauge 60 and the are additionally provided on cabinet 10
Two pressure gauges 70, first pressure gauge 60 and second pressure gauge 70 are separately positioned on cabinet 10, the corresponding slow pressure of first pressure gauge 60
Test chamber 11, the corresponding blast analogue chamber 12 of second pressure gauge 70.That is, passing through first pressure gauge 60 and second pressure gauge 70
Pressure in the slow pressure test chamber 11 of monitoring and blast analogue chamber 12 respectively, 30 pairs of validity test explosion-proof valve different air pressures and explosion
Response condition, to improve the safety of battery anti-explosion valve test system 100.
In still other embodiments of the present invention, transparent observation window 13, observation window 13 and slow pressure are additionally provided on cabinet 10
Test chamber 11 is corresponding.As shown in Figure 1, observation window 13 is set on the side wall of cabinet 10, tester can be real by observation window 13
When observe separation membrane 21 explosion situation.
In the description of the present invention, it is to be understood that, term " on ", "lower" ", bottom ", "inner", "outside", "front", "rear"
The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of the description present invention and
Simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construction
And operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature right above second feature and oblique upper, or be merely representative of
First feature horizontal height is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (10)
1. a kind of battery anti-explosion valve test system characterized by comprising
Cabinet；
Partition component, the partition component are arranged in the cabinet and the housing interior volume are separated into slow pressure test chamber
With blast analogue chamber；
Explosion-proof valve, the explosion-proof valve is arranged on the cabinet and the corresponding slow pressure test chamber；
First gas-charging connection and the second gas-charging connection, first gas-charging connection is arranged on the cabinet and the corresponding slow pressure
Test chamber, second gas-charging connection is arranged on the cabinet and the corresponding blast analogue chamber；
Wherein the battery anti-explosion valve test system has slow pressure modes of inflation and simulated explosion mode,
Wherein when the battery anti-explosion valve test system is in the slow pressure modes of inflation, by first gas-charging connection to
The slow pressure tests interacvity air-filling and the partition component opens the slow pressure test chamber with the blast analogue chamber airtight partition；
When the battery anti-explosion valve test system is in the simulated explosion mode, by second gas-charging connection to described
Blast analogue interacvity air-filling simultaneously breaks through at least part of the partition component with simulated explosion.
2. battery anti-explosion valve test system according to claim 1, which is characterized in that the partition component includes: in institute
It states battery anti-explosion valve test system and is in the separation membrane that can be broken through when the simulated explosion mode.
3. battery anti-explosion valve test system according to claim 2, which is characterized in that the separation membrane is flexible separates
Film.
4. battery anti-explosion valve test system according to claim 3, which is characterized in that the separation membrane is rubber membrane.
5. battery anti-explosion valve test system according to claim 3, which is characterized in that the partition component further include: point
Partition, fixed part, the demarcation plate are fixed in the cabinet, and demarcation plate through-hole, the fixation are provided on the demarcation plate
The separation membrane is fixed on the demarcation plate in portion and the separation membrane closes the demarcation plate through-hole.
6. battery anti-explosion valve test system according to claim 5, which is characterized in that the fixed part include: flange and
Threaded fastener, the flange are arranged around the demarcation plate through-hole, and the separation membrane is pressed on the separation by the flange
On plate, the threaded fastener is used to the flange being fixed on the demarcation plate.
7. battery anti-explosion valve test system according to claim 6, which is characterized in that the separation membrane includes: central part
And edge part, the edge part are arranged around the central part, the edge part is pressed on the demarcation plate by the flange.
8. battery anti-explosion valve test system according to claim 7, which is characterized in that the central part is hemispherical.
9. battery anti-explosion valve test system according to claim 1, which is characterized in that be additionally provided with first on the cabinet
Pressure gauge and second pressure gauge, the first pressure gauge and the second pressure gauge are separately positioned on the cabinet, and described
One pressure gauge corresponds to the slow pressure test chamber, and the second pressure gauge corresponds to the blast analogue chamber.
10. battery anti-explosion valve test system according to claim 1, which is characterized in that be additionally provided on the cabinet
Bright observation window, the observation window are corresponding with the slow pressure test chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710135852.5A CN106969980B (en) | 2017-03-08 | 2017-03-08 | Battery anti-explosion valve test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710135852.5A CN106969980B (en) | 2017-03-08 | 2017-03-08 | Battery anti-explosion valve test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106969980A CN106969980A (en) | 2017-07-21 |
| CN106969980B true CN106969980B (en) | 2019-09-03 |
Family
ID=59329328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710135852.5A Active CN106969980B (en) | 2017-03-08 | 2017-03-08 | Battery anti-explosion valve test system |
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| Country | Link |
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| CN (1) | CN106969980B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208441B (en) * | 2020-01-17 | 2022-04-19 | 恒大恒驰新能源汽车科技(广东)有限公司 | Battery testing device |
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| CN105845867A (en) * | 2016-03-25 | 2016-08-10 | 北京新能源汽车股份有限公司 | Explosion-proof valve for power battery case |
| CN205639741U (en) * | 2016-03-28 | 2016-10-12 | 新材料与产业技术北京研究院 | A relief valve and battery test equipment for battery test equipment |
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- 2017-03-08 CN CN201710135852.5A patent/CN106969980B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11204089A (en) * | 1998-01-19 | 1999-07-30 | Matsushita Electric Ind Co Ltd | Explosion-proof sealing apparatus for secondary battery |
| CN2909282Y (en) * | 2005-10-26 | 2007-06-06 | 中国北方车辆研究所 | Testing box for safety property of power battery of electric motor car |
| CN201576054U (en) * | 2009-12-31 | 2010-09-08 | 熊辉 | Cylinder-shaped lithium ion battery safety valve precision test device |
| CN202133516U (en) * | 2011-06-01 | 2012-02-01 | 福建亚亨动力科技集团有限公司 | Accumulator safety valve detecting apparatus |
| CN102508171A (en) * | 2011-11-14 | 2012-06-20 | 江苏环能通环保科技有限公司 | Device for detecting lithium battery |
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| Publication number | Publication date |
|---|---|
| CN106969980A (en) | 2017-07-21 |
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