CN209416626U - A kind of new energy car battery box shell gases side leakage detection device - Google Patents
A kind of new energy car battery box shell gases side leakage detection device Download PDFInfo
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- CN209416626U CN209416626U CN201920207993.8U CN201920207993U CN209416626U CN 209416626 U CN209416626 U CN 209416626U CN 201920207993 U CN201920207993 U CN 201920207993U CN 209416626 U CN209416626 U CN 209416626U
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- plugging mechanism
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- new energy
- battery box
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- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 title abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 118
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000003825 pressing Methods 0.000 abstract description 5
- 239000003566 sealing material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000565 sealant Substances 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a kind of new energy car battery box shell gases side leakage detection devices, it is characterized in that: including workbench and air leakage detector, control bin is equipped on the workbench, it is equipped with air leakage detector controller and control cabinet air pipe interface on the control bin, is equipped with control panel in the side of the air leakage detector；The air leakage detector is equipped with a power mechanism pedestal, and the power mechanism pedestal is equipped with a rectangular frame, is equipped with heightening base below the quadrangle of the rectangular frame；The utility model instead of water inlet test, improve efficiency, adopt a split structure, central controlled form is pressurizeed, instead of entire pressurisation structure popular currently on the market；The utility model uses a kind of sealing material of face contact, solves workpiece deformation problems；Using the pressing device of multiple spot, good airproof performance.
Description
Technical field
The utility model belongs to field of automobile, has and is related to a kind of new energy car battery box shell gases side
Device for detecting leakage.
Background technique
With the development of electric car, core component of the power battery pack as pure electric automobile, the safety of battery pack
It gradually highlights, directly influences the safety of vehicle.The exploitation of battery pack needs to fully consider various factors, needs
Study absorbs domestic and international advanced technology experience, carries out verifying repeatedly to design scheme and optimizes.Therefore just to the intensity of Battery case,
The design requirements such as rigidity, heat dissipation, waterproof, insulation are very high, so the design and performing leak test of Battery case just seem to Guan Chong
It wants.Small-sized pure electric automobile, it has also become the sealing of one of the leading vehicle of national industryization strategy, Battery case and core is surveyed
Examination is even more important.
In traditional test scheme, power battery of pure electric automobile group output voltage is up to 200 volts or more, Battery case
In addition to ensureing and accommodating battery, it is necessary to effectively contact of the isolation operator and passenger with battery；Battery case must seal anti-
Water prevents from leading to short circuit into water, and Battery case protection level requirements reach IP67.
In traditional test scheme, air-tight test covers tightly battery case upper cover and lower cover, is sealed using sealant,
Only stay a plug connector mouth as air inlet, remaining plug connector hole is blocked, and is controlled pressure using air gauge, is filled to battery case import
Gas, aerating pressure to 30KPa, pressure maintaining 1min check whether there is the place of gas leakage with suds.It, can if chest does not have gas leakage
With pressure maintaining, illustrate Battery case leakproofness at least in IP66 or more.Submerging test covers tightly battery box cover with lower cover, uses
Sealant is sealed, and all plug connector Kong Douyong baffle folder gaskets block, and entire Battery case is completely immersed in a Sheng
In the pond of full water, entire chest is completely forced into water from battery case top with bracket, keeps chest upper surface under water
500mm is kept for 10 minutes.Chest is taken out after after the time, is opened upper cover, whether is soaked in viewing-box body.If in chest completely
It is dry, then illustrate that Battery case leakproofness has been at least up to IP66 or more.If cabinet interior is intake, illustrate sealing not enough,
Reason and improvement need to be searched.Although lower in conventional test methodologies cost, there are following some problems: regularity is poor, subjective
Property is very strong, and the operation that places one's entire reliance upon can not be measured accurately；It needs upper-lower casing to be sealed and can just measure two
A part, wastes time, and more situations is because of division of labor careful, and two parts can not assist in the time range that can control
It adjusts unanimously, leads to not test.
Summary of the invention
For overcome the deficiencies in the prior art, a kind of new energy car battery box shell gases side leakage detection dress is proposed
It sets, side leakage instrument is connect by described device with detection part, is inflated by instrument internal electronic pressure regulating valve to the detection part.
After passing through a brief gas replenishment process, closing pressure-regulating valve, gas source and detection workpiece is isolated.Instrument internal pressure difference passes
The variation of sensor pressure will show the reduction of intracavity gas pressure, this means that workpiece leaks.It can be with using the method
Realization accurately measures, and regularity is strong, real-time display and preservation, the functions such as data traceability.The utility model instead of water inlet test,
Efficiency is improved, is adopted a split structure, central controlled form is pressurizeed, is added instead of entirety popular currently on the market
Laminated structure；The structure uses a kind of sealing material of face contact, solves workpiece deformation problems；It is filled using the compression of multiple spot
It sets, good airproof performance.
The technical solution of the utility model are as follows: a kind of new energy car battery box shell gases side leakage detection device, including
Workbench and air leakage detector, are equipped with control bin on the workbench, and gas is equipped on the control bin and is surveyed
Instrument controller and control cabinet air pipe interface are leaked, electronic pressure regulating valve is equipped in the air leakage detector controller, is surveyed in the gas
The side for leaking instrument is equipped with control panel；
The air leakage detector is equipped with a power mechanism pedestal, and the power mechanism pedestal is equipped with a rectangular frame,
Heightening base is equipped with below the quadrangle of the rectangular frame；
A left end hold-down mechanism and a right end pressure are respectively equipped on two or so parallel edges of the rectangular frame
Tight mechanism, is equipped with one group of left end plugging mechanism in the left end hold-down mechanism, and it is stifled to be equipped with one group of right part in right end hold-down mechanism
Holes mechanism 6 is respectively equipped with one group of lateral surface compressing mechanism 2, in the side on the another two of the rectangular frame or so parallel edges
Face hold-down mechanism 2 is equipped with positioning mechanism 3；It is equipped with bottom plate 4 on the rectangular frame, is surrounded by annular in the bottom plate 4
Sealing device 5 is equipped with one group of input and output gas-tpe fitting, the input and output gas-tpe fitting in the center of the bottom plate 4
It is connected with the control cabinet air pipe interface by tracheae, cover board is equipped with above the bottom plate 4, the cover board divides with bottom plate 4
Not Tong Guo left end hold-down mechanism, right end hold-down mechanism and lateral surface compressing mechanism 2 fastening be sealed, to detect before testing
The airtight performance of air leakage detector.
The lateral surface compressing mechanism 2 is equipped with a connecting shaft and a cylinder assembly, if being equipped with dry-pressing in the upper of connecting shaft
Arm is equipped with cylindrical briquettes in the end of the pressure arm, and the briquetting is fixed together by a link block with pressure arm；Institute
The both ends for stating connecting shaft are respectively provided with an attachment base, the centre of the connecting shaft be equipped with link block, on the link block according to
Secondary to set cylinder connector and shaft, the cylinder connector is connected with the cylinder assembly.
The right end hold-down mechanism be equipped with a connecting shaft and a cylinder assembly, set in connecting shaft there are three pressure
Arm is equipped with cylindrical briquettes in the end of the pressure arm, and the briquetting is fixed together by a link block with pressure arm；Institute
The both ends for stating connecting shaft are respectively provided with an attachment base, the centre of the connecting shaft be equipped with link block, on the link block according to
Secondary to set cylinder connector and shaft, the cylinder connector is connected with the cylinder assembly.
The medial end plugging mechanism 7 is equipped with the centralized driving bottom plate 4 of strip, on the centralized driving bottom plate 4
It is successively arranged one group of sealing device, is equipped with plug-hole locating piece at the both ends of the centralized driving bottom plate 4.
The left end plugging mechanism includes upper left end plugging mechanism 1 and lower left end plugging mechanism, the upper left end plug-hole machine
Structure 1 is in the top of lower left end plugging mechanism.
The right end plugging mechanism includes right part plugging mechanism 6, medial end plugging mechanism 7, right end side plugging mechanism
8, plugging mechanism 9 and right end end plugging mechanism in right end；The right part plugging mechanism 6, medial end plugging mechanism 7, right end
The axis direction of plugging mechanism 9 and right end end plugging mechanism successively along the right end hold-down mechanism is put in side plugging mechanism 8, right end
It sets.
Datum hole is equipped on the bottom plate 4.
Traveling wheel is equipped with below the heightening base.
Detailed description of the invention:
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model lateral surface compressing structural schematic diagram；
Fig. 3 is the utility model right end compressing structure schematic diagram；
Fig. 4 is the utility model left end compressing structure schematic diagram;
Fig. 5 is 7 structural schematic diagram of the utility model medial end plugging mechanism；
Fig. 6 is 4 structural schematic diagram of the utility model bottom plate.
In figure, 1, upper left end plugging mechanism；2, lateral surface compressing mechanism；3, positioning mechanism；4, bottom plate；5, annular is close
Seal apparatus；6, right part plugging mechanism；7, medial end plugging mechanism；8, right end side plugging mechanism；9, plug-hole in right end
Mechanism；10, right end hold-down mechanism；11, right end end plugging mechanism；12, control panel；13, heightening base 13；14, traveling wheel；
15, input and output gas-tpe fitting 15；16, power mechanism pedestal；17, lower left end plugging mechanism；18, left end hold-down mechanism； 19,
Datum hole；20, tracheae 20；21, bin is controlled；22, gas side leakage instrument control device；23, workbench；24, attachment base；25, axis
Set；26, pressure arm；27, briquetting；28, connecting shaft；29, cylinder connector；30, cylinder assembly；31, sealing device；32, cylinder；33,
Locating piece；34, centralized driving bottom plate.
The utility model beneficial effect
1, the utility model is tested instead of water inlet, improves efficiency and production capacity；
2, the utility model adopts a split structure, central controlled form is pressurizeed, instead of existing market upstream
Capable entire pressurisation structure；
3, structure described in the utility model uses a kind of sealing material of face contact, solves workpiece deformation problems；
4, the utility model uses the pressing device of multiple spot, good airproof performance.
Specific embodiment
Referring to shown in Fig. 1 to Fig. 6, the utility model includes workbench 23 and air leakage detector, and air leakage detector is located at
The left side of Fig. 1 is equipped with control bin 21 on the workbench 23, Air leakage detector instrument control is equipped on the control bin 21
Device 22 and control cabinet air pipe interface processed are equipped with electronic pressure regulating valve in the air leakage detector controller 22, adjust each gas respectively
Gas pressure in pipe 20 is equipped with control panel 12 in the side of the air leakage detector；12 operating gas of control panel leaks hunting
The operation of each pneumatic device of instrument.
The air leakage detector is equipped with a power mechanism pedestal 16, and the power mechanism pedestal 16 is equipped with a rectangle frame
The quadrangle lower section of frame, the rectangular frame is equipped with heightening base 13；
A left end hold-down mechanism 18 and a right end are respectively equipped on two or so parallel edges of the rectangular frame
Hold-down mechanism 10, is equipped with one group of left end plugging mechanism in the left end hold-down mechanism 18, is equipped with one group in right end hold-down mechanism 10
Right part plugging mechanism 6 is respectively equipped with one group of lateral surface compressing mechanism 2 on the another two of the rectangular frame or so parallel edges,
Positioning mechanism 3 is equipped in the lateral surface compressing mechanism 2；Bottom plate 4 is equipped on the rectangular frame, in 4 surrounding of bottom plate
Equipped with annular seal 5, one group of 20 connector 15 of input and output tracheae, the input are equipped in the center of the bottom plate 4
20 connector 15 of gas outlet tube is connected with the control cabinet air pipe interface by tracheae 20, and cover board is equipped with above the bottom plate 4,
The cover board is sealed in by left end hold-down mechanism 18, right end hold-down mechanism 10 and the fastening of lateral surface compressing mechanism 2 respectively with bottom plate 4
Together, before testing, the airtight performance of detection gas leak detector, in workpiece test, cap locations are replaced by workpiece, the lid
Plate removes.
In the case where not obscuring, left end hold-down mechanism 18 and a right end hold-down mechanism 10 and lateral surface compressing mechanism 2
Equal Pneumatic components are referred to as pneumatic device.
The lateral surface compressing mechanism 2 is equipped with a connecting shaft 28 and a cylinder assembly 30, is equipped in connecting shaft 28
Several pressure arms 26 are equipped with cylindrical briquettes 27 in the end of the pressure arm 26, and the briquetting 27 passes through a link block and pressure arm
26 are fixed together；It is respectively provided with an attachment base 24 at the both ends of the connecting shaft 28, attachment base 24 is connected to by axle sleeve 25
In connecting shaft 28, it is equipped with link block in the centre of the connecting shaft 28, cylinder connector 29 is successively set on the link block and is turned
Axis, the cylinder connector 29 are connected with the cylinder assembly 30.
The right end hold-down mechanism 10 is equipped with a connecting shaft 28 and a cylinder assembly 30, is equipped in connecting shaft 28
Three pressure arms 26 are equipped with cylindrical briquettes 27 in the end of the pressure arm 26, and the briquetting 27 passes through a link block and pressure arm
26 are fixed together；It is respectively provided with an attachment base 24 at the both ends of the connecting shaft 28, is equipped in the centre of the connecting shaft 28
Link block successively sets cylinder connector 29 and shaft, the cylinder connector 29 and 30 phase of cylinder assembly on the link block
Connection.
The medial end plugging mechanism 7 is equipped with the centralized driving bottom plate 34 of strip, in the centralized driving bottom plate 34
On be successively arranged one group of sealing device 31, the both ends of the centralized driving bottom plate 34 be equipped with plug-hole locating piece 33.
The left end plugging mechanism includes upper left end plugging mechanism 1 and lower left end plugging mechanism 17, the upper left end plug-hole
Mechanism 1 is in the top of lower left end plugging mechanism 17.
The right end plugging mechanism includes right part plugging mechanism 6, medial end plugging mechanism 7, right end side plugging mechanism
8, plugging mechanism 9 and right end end plugging mechanism 11 in right end；The right part plugging mechanism 6, medial end plugging mechanism 7, the right side
Plugging mechanism 9 and right end end plugging mechanism 11 are successively along the axis of the right end hold-down mechanism 10 in end side plugging mechanism 8, right end
It places in direction.
Datum hole 19 is equipped on the bottom plate 4.
Traveling wheel 14 is equipped with below the heightening base 13.
Workflow is as follows: the workpiece for needing to detect is in place, is temporarily placed in by air leakage detector, covers cover board, the cover board
It is sealed, is examined by left end hold-down mechanism 18, right end hold-down mechanism 10 and the fastening of lateral surface compressing mechanism 2 respectively with bottom plate 4
Survey the airtight performance of air leakage detector；Air leakage detector is controlled by the button on control panel 22, is stayed after pressure arm 26 is opened
Out position manually will need the workpiece detected to be placed in the upper surface of air leakage detector, at this time 4 on air leakage detector localization machine
Structure starting, which rises in the pin hole for piercing into workpiece, positions workpiece, and workpiece (battery case) both ends are reserved with power outlet hole, at this time gas
Two pneumatic devices of body leak detector start and seal the two holes；Starting after the completion of all sealings concentrates pressing device to make workpiece
It keeps being in close contact and compressing with tooling sealing device 31, while sealing space is inflated makes sealing device 31 and to be detected
After a certain period of time, view of leaking hunting at this time is actuated for test gas leak situation for pressure maintaining after workpiece bears certain pressure.Considering
In the case where tooling itself gas leakage, whether there is gas leakage to test battery case in welding position, illustrate to weld if air leakage is exceeded
It is unqualified that socket part position has breakdown that will be determined as.The utility model is tested instead of water inlet, improves efficiency, using Air leakage detector
Instrument and the separated split type structure of workbench 23, central controlled form is pressurizeed on workbench, instead of current
Popular entire pressurisation structure in the market；The utility model uses a kind of sealing material of face contact, solves workpiece deformation
Problem；Using the pressing device of multiple spot, good airproof performance.
Claims (8)
1. a kind of new energy car battery box Shell detection device, it is characterized in that: including workbench and Air leakage detector
Instrument is equipped with control bin on the workbench, air leakage detector controller and control cabinet is equipped on the control bin
Air pipe interface, is equipped with electronic pressure regulating valve in the air leakage detector controller, is equipped with control in the side of the air leakage detector
Panel；
The air leakage detector is equipped with a power mechanism pedestal, and the power mechanism pedestal is equipped with a rectangular frame, described
Heightening base is equipped with below the quadrangle of rectangular frame；
A left end hold-down mechanism and a right end compacting machine are respectively equipped on two or so parallel edges of the rectangular frame
Structure, is equipped with one group of left end plugging mechanism in the left end hold-down mechanism, is equipped with one group of right part plug-hole machine in right end hold-down mechanism
Structure is respectively equipped with one group of lateral surface compressing mechanism, in the lateral surface compressing on the another two of the rectangular frame or so parallel edges
Mechanism is equipped with positioning mechanism；It is equipped with bottom plate on the rectangular frame, is surrounded by annular seal in the bottom plate,
The center of the bottom plate is equipped with one group of input and output gas-tpe fitting, the input and output gas-tpe fitting and the control cabinet gas
Interface tube is connected by tracheae, and cover board is equipped with above the bottom plate, and the cover board and bottom plate pass through left end compacting machine respectively
Structure, right end hold-down mechanism and lateral surface compressing mechanism snaps are sealed.
2. new energy car battery box Shell detection device according to claim 1, it is characterized in that: the side
Hold-down mechanism is equipped with a connecting shaft and a cylinder assembly, and upper in connecting shaft is equipped with several pressure arms, at the end of the pressure arm
End is equipped with cylindrical briquettes, and the briquetting is fixed together by a link block with pressure arm；It is each at the both ends of the connecting shaft
Equipped with an attachment base, it is equipped with link block in the centre of the connecting shaft, cylinder connector is successively set on the link block and is turned
Axis, the cylinder connector are connected with the cylinder assembly.
3. new energy car battery box Shell detection device according to claim 1, it is characterized in that: the right end
Hold-down mechanism is equipped with a connecting shaft and a cylinder assembly, is set in connecting shaft there are three pressure arm, at the end of the pressure arm
End is equipped with cylindrical briquettes, and the briquetting is fixed together by a link block with pressure arm；It is each at the both ends of the connecting shaft
Equipped with an attachment base, it is equipped with link block in the centre of the connecting shaft, cylinder connector is successively set on the link block and is turned
Axis, the cylinder connector are connected with the cylinder assembly.
4. new energy car battery box Shell detection device according to claim 1, it is characterized in that: the inside
End plugging mechanism is equipped with the centralized driving bottom plate of strip, and one group of sealing dress is successively arranged on the centralized driving bottom plate
It sets, is equipped with plug-hole locating piece at the both ends of the centralized driving bottom plate.
5. new energy car battery box Shell detection device according to claim 1, it is characterized in that: the left end
Plugging mechanism includes upper left end plugging mechanism and lower left end plugging mechanism, and the upper left end plugging mechanism is in lower left end plugging mechanism
Top.
6. new energy car battery box Shell detection device according to claim 1, it is characterized in that: the right end
Plugging mechanism includes right part plugging mechanism, medial end plugging mechanism, right end side plugging mechanism, plugging mechanism and the right side in right end
Hold last plugging mechanism；The right part plugging mechanism, medial end plugging mechanism, right end side plugging mechanism, plug-hole machine in right end
Structure and right end end plugging mechanism are successively placed along the axis direction of the right end hold-down mechanism.
7. new energy car battery box Shell detection device according to claim 1, it is characterized in that: at the bottom
Plate is equipped with datum hole.
8. the new energy car battery box Shell according to any claim in the claims 1 to 7 detects
Device, it is characterized in that: being equipped with traveling wheel below the heightening base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920207993.8U CN209416626U (en) | 2019-02-19 | 2019-02-19 | A kind of new energy car battery box shell gases side leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920207993.8U CN209416626U (en) | 2019-02-19 | 2019-02-19 | A kind of new energy car battery box shell gases side leakage detection device |
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| Publication Number | Publication Date |
|---|---|
| CN209416626U true CN209416626U (en) | 2019-09-20 |
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ID=67943041
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920207993.8U Expired - Fee Related CN209416626U (en) | 2019-02-19 | 2019-02-19 | A kind of new energy car battery box shell gases side leakage detection device |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646146A (en) * | 2019-02-19 | 2020-01-03 | 杭州隆湖机电科技有限公司 | New energy automobile battery case shell gas tightness detection device |
| CN110763407A (en) * | 2019-10-12 | 2020-02-07 | 世泰仕塑料有限公司 | A sealing detection device for battery upper casing |
| CN110907832A (en) * | 2019-12-11 | 2020-03-24 | 江西江铃集团新能源汽车有限公司 | Safety auxiliary device for detecting air tightness of battery pack |
| CN116593074A (en) * | 2023-07-18 | 2023-08-15 | 杭州久天科技有限公司 | New energy power battery testing equipment and method |
-
2019
- 2019-02-19 CN CN201920207993.8U patent/CN209416626U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646146A (en) * | 2019-02-19 | 2020-01-03 | 杭州隆湖机电科技有限公司 | New energy automobile battery case shell gas tightness detection device |
| CN110646146B (en) * | 2019-02-19 | 2024-07-09 | 杭州隆湖机电科技有限公司 | New energy automobile battery case shell gas tightness detection device |
| CN110763407A (en) * | 2019-10-12 | 2020-02-07 | 世泰仕塑料有限公司 | A sealing detection device for battery upper casing |
| CN110763407B (en) * | 2019-10-12 | 2024-10-25 | 世泰仕塑料有限公司 | A sealing detection device for battery upper shell |
| CN110907832A (en) * | 2019-12-11 | 2020-03-24 | 江西江铃集团新能源汽车有限公司 | Safety auxiliary device for detecting air tightness of battery pack |
| CN110907832B (en) * | 2019-12-11 | 2022-07-19 | 江西江铃集团新能源汽车有限公司 | Safety auxiliary device for detecting air tightness of battery pack |
| CN116593074A (en) * | 2023-07-18 | 2023-08-15 | 杭州久天科技有限公司 | New energy power battery testing equipment and method |
| CN116593074B (en) * | 2023-07-18 | 2023-10-03 | 浙江机电职业技术学院 | New energy power battery detection equipment and method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190920 Termination date: 20200219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |