CN106197892A - A kind of Battery case air tightness detection equipment - Google Patents
A kind of Battery case air tightness detection equipment Download PDFInfo
- Publication number
- CN106197892A CN106197892A CN201610616422.0A CN201610616422A CN106197892A CN 106197892 A CN106197892 A CN 106197892A CN 201610616422 A CN201610616422 A CN 201610616422A CN 106197892 A CN106197892 A CN 106197892A
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- China
- Prior art keywords
- battery case
- sealing
- lid
- support
- air tightness
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2884—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for welds
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of Battery case air tightness detection equipment, relate to Battery case detection technique field.Including support, upper part of the frame is provided with the fixed platform for self-contained battery casing, one end of support is provided with the sealing of Battery case and opens and mechanism, this sealing is driveed and is included that the side being respectively cooperating with Battery case lateral opening and top-open seals lid and top sealing detection lid with mechanism, top sealing detection lid is provided with and can connect the air inlet within Battery case after sealing, and air inlet is connected with air-leakage detector by trachea；Sealing lid in side drives with side sealing and mechanism is connected, and top sealing detection lid drives with top sealing and mechanism is connected；Air-leakage detector, side seal to drive to seal to drive with mechanism and top and are connected with master control cabinet with mechanism.Its simple in construction, easy to operate, it is possible to efficiently the welded seal of Battery case to be detected and drawn accurate data, and then can quickly judge that weld seam sealing is the most up to standard, substantially increases detection efficiency.
Description
Technical field
The present invention relates to Battery case detection technique field.
Background technology
Electrokinetic cell casing is the vitals assembling power battery assembly, and the welded seal sexual demand at its butt welded seam is relatively
High.The test of butt welded seam sealing at present mainly needs for human eye and observes, and needs operator to go through commissure
Test case just can pinpoint the problems, cause labor strength to increase, detection efficiency reduce, and cannot to testing accurately
Data.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, it is provided that a kind of Battery case air-tightness
Detection equipment, its simple in construction, easy to operate, it is possible to efficiently the welded seal of Battery case to be detected, it is judged that weldering
Seam sealing is the most up to standard, substantially increases detection efficiency.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of Battery case air tightness detection equipment, including support, upper part of the frame is provided with puts down for the fixing of self-contained battery casing
Platform, one end of support is provided with the sealing of Battery case and opens and mechanism, and this sealing is driveed and included and Battery case lateral opening with mechanism
And the side that top-open is respectively cooperating with seals lid and top sealing detection lid, top sealing detection lid is provided with after sealing can
Connection air inlet within Battery case, air inlet is connected with air-leakage detector by trachea；It is close with side that side seals lid
Fengkai and mechanism connect, and top sealing detection lid drives with top sealing and mechanism is connected；Air-leakage detector, side seal open and
Mechanism and top seal to drive and are connected with master control cabinet with mechanism.
As further technical scheme, described fixed platform is provided with some fixing spiral shells for self-contained battery casing
Hole.
As further technical scheme, it is connected by laterally steering mechanism between described fixed platform and support, makes solid
Fixed platform can transversely slide between support both ends.
As further technical scheme, described laterally steering mechanism includes the horizontal electricity being located at the upper part of the frame other end
Machine, cross motor is connected with the screw being located at fixed platform bottom by cross lead screw, and cross lead screw both sides are also respectively symmetrically
Be provided with a cross slide way, fixed platform bottom be provided with coordinate with cross slide way laterally lead boots；Cross motor and master control cabinet
Connect.
As further technical scheme, described side seals lid and includes at least one opening phase with Battery case side
The secondary seal lid coordinated, level(l)ing mechanism includes lateral adjustments cylinder and side stand；Each secondary seal lid is all by horizontal
Being connected with side stand to regulation cylinder, side stand is located at upper part of the frame, and support is provided with some side stand installing holes, side stand and
It is threaded connection part between side stand installing hole to connect；Lateral adjustments cylinder is connected with master control cabinet.
As further technical scheme, described side seals and drives with mechanism is level(l)ing mechanism, top seal open and
Mechanism is vertical governor motion.
As further technical scheme, the plate face that each described secondary seal lid contacts with Battery case is equipped with
The transverse sealing matched with the lateral opening of Battery case is protruding.
As further technical scheme, described lateral adjustments cylinder is threaded connection part and is connected with side stand, collateral
Frame is provided with the cylinder mounting holes of some genesis analysis.
As further technical scheme, described vertical governor motion includes upright guide rail, upper frame and vertically regulates cylinder,
Upright guide rail has at least four, and the symmetrical both sides being located at upper part of the frame one end, it runs through four of top sealing detection lid
Corner, the top of top sealing detection lid is provided with the upper frame being connected with upright guide rail top, and upper frame top is provided with and vertically regulates gas
Cylinder, vertically the piston rod of the regulation cylinder upper surface downward through upper frame and with top sealing detection lid is connected；Vertically regulate gas
Cylinder is connected with master control cabinet.
As further technical scheme, the plate face that described top sealing detection lid contacts with Battery case is provided with and electricity
The vertical seal washer that the top-open of pond casing matches.
Use and have the beneficial effects that produced by technique scheme:
The simple in construction of equipment, easy to operate, it is possible to efficiently the welded seal of Battery case to be detected, it is judged that weld seam
Sealing is the most up to standard, substantially increases detection efficiency.
Accompanying drawing explanation
Fig. 1 is the perspective view of the present invention；
Fig. 2 is the perspective view dorsad of Fig. 1；
Fig. 3 is the A direction view of Fig. 2；
Fig. 4 is the B direction view of top sealing detection lid in Fig. 2；
Fig. 5 is the upward view of Fig. 4；
Fig. 6 is that in Fig. 2, side seals lid and the assembling perspective view of level(l)ing mechanism；
Fig. 7 is the perspective view dorsad of Fig. 6；
Fig. 8 is the partial structurtes enlarged drawing of Fig. 3；
Fig. 9 is the structural representation of Battery case in Fig. 2；
Figure 10 is the assembling structure B direction view of Battery case in Fig. 2, support, secondary seal lid and level(l)ing mechanism；
Figure 11 is that the C of Fig. 1 is to working state schematic representation.
In figure: 1, support；2, fixed platform；3, Battery case；5, top sealing detection lid；6, trachea；7, air-tightness inspection
Survey instrument；8, level(l)ing mechanism；9, vertical governor motion；10, fixing threaded hole；11, cross motor；12, cross lead screw；13, silk
Female；14, cross slide way；15, boots are laterally led；16, master control cabinet；17, secondary seal lid；18, lateral adjustments cylinder；19, collateral
Frame；20, transverse sealing is protruding；22, cylinder mounting holes；23, upright guide rail；24, upper frame；25, cylinder is vertically regulated；26, vertical
Seal washer；27, auxiliary guide rail；28, auxiliary guide pad；29, air inlet.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
As shown in figs. 1-11, for an embodiment of the present invention a kind of Battery case air tightness detection equipment:
Including support 1.Support 1 top is provided with the fixed platform 2 for self-contained battery casing 3.One end of support 1 is provided with battery case
The sealing of body is opened and mechanism, and it includes that the side being respectively cooperating with Battery case 3 lateral opening and top-open seals lid and top
Portion's sealing detection lid 5, top sealing detection lid 5 is provided with the air inlet 29 that can connect after sealing within Battery case 3, air inlet
Mouth 29 is connected with air-leakage detector 7 by trachea 6；Side seals lid and top sealing detection lid 5 is connected to level and adjusts
Joint mechanism 8 and vertically governor motion 9.The sealing of Battery case is driveed with mechanism for blocking the opening of Battery case 3, manufactures relatively
The environment sealed.
By intelligentized air-leakage detector 7, after sealing, by the trachea 6 that is tightly connected with air inlet 29 to electricity
Pond casing 3 inner chamber is inflated, and aeration quantity can be shown by air-leakage detector 7, stops inflation subsequently, stands a period of time, passes through
The trachea 6 of connection, air-leakage detector 7 can the change of perception cavity internal gas pressure, draw the air leakage in a period of time, and then
Judge that the sealing of weld seam is the most up to standard.Air-leakage detector 7, side seal drive seal with mechanism and top drive with mechanism all with
Master control cabinet 16 connects, by the control mode of automatization, it is possible to the position of regulating cell casing 3 and Battery case efficiently
Seal and open the sealing state between mechanism and Battery case 3, and the test number of air-leakage detector 7 can be read easily
According to, test process is without the gas leakage situation of operator's perusal weld seam, it is possible to quickly judge the comprehensive of Battery case 3 entirety
Welding quality the most up to standard, it is simple to determine follow-up the need of doing over again, greatly reduce the input of manpower and materials.
Concrete, fixed platform 2 is provided with some fixing threaded holes 10 for self-contained battery casing 3.Can be to battery case
Body 3 installs location efficiently and effectively, and fixed platform 2 is applicable to the installation of the Battery case 3 of Multiple Type, reduces
The use cost of equipment.
Further, it is connected by laterally steering mechanism between fixed platform 2 and support, makes the fixed platform 2 can be transversely
Slide between support 1 both ends.Laterally steering mechanism can make fixed platform 2 away from or open and machine near the sealing of Battery case
Structure, the sealing of Battery case drive with mechanism outside region in Battery case 3 is installed, be moved to battery case after installing
The sealing of body is driveed and is sealed in the sealing area of mechanism, and then detects, and runs out sealing area and enter after detection
Row dismounting, this structure energy Appropriate application space, it is effectively improved the efficiency of loading and unloading, is greatly shortened test period.
Concrete, laterally steering mechanism includes the cross motor 11 being located at the support 1 top other end, and cross motor 11 passes through
Cross lead screw 12 is connected with the screw 13 being located at fixed platform 2 bottom, and what cross lead screw 12 both sides were also respectively symmetrically is provided with one
Cross slide way 14, fixed platform 2 bottom be provided with coordinate with cross slide way 14 laterally lead boots 15；Cross motor 11 and master control cabinet
16 connect.Control fixed platform 2 by screw structure and carry out transverse shifting, by cross slide way 14 with laterally lead boots 15 to fixing
Platform carries out spacing so that it is along the guiding movement of guide rail, and can only can not rotate the situations such as passive, position the most firm,
Be conducive to the follow-up sealing with Battery case to drive and mechanism coordinates.Preferably, in order to make fixed platform 2 in transverse shifting mistake
In journey more firm, will not overturn, also can install the auxiliary guide rail 27 parallel with cross slide way 14 in the side of cross slide way 14 additional,
It is additionally provided with in the bottom of fixed platform 2 and the auxiliary guide pad 28 assisting guide rail 27 to match.Preferably, at cross slide way 14
Specify position that the positive stop matched with fixed platform 2 can be set, can be with top sealing detection lid 5 to appointment position when running
Position corresponding after, fixed platform 2 is stopped by positive stop so that it is accurate positioning, better tightness.
Cross motor 11 is connected with master control cabinet 16, it is possible to automatization, the intelligentized feeding controlling cross motor 11
Amount is controlled so that the moving horizontally action and can be more accurately controlled of Battery case 3, it is simple to follow-up sealing behaviour
Make.
Concrete, side seals and drives with mechanism is level(l)ing mechanism 8, and top seals and drives with mechanism is vertical governor motion
9。
Preferably, having the structure of multiple opening to adapt to Battery case side, side seals lid and includes at least one
The secondary seal lid 17 matched with the opening of Battery case 3 side, level(l)ing mechanism 8 includes lateral adjustments cylinder 18 and side
Support 19.Each secondary seal lid 17 is all connected with side stand 19 by lateral adjustments cylinder 18, and side stand 19 is located on support 1
Portion, support 1 is provided with some side stand installing holes, is threaded connection part and is connected between side stand 19 with side stand installing hole.
It is attached by dismountable threaded connector, it is possible to change the position to secondary seal lid 17 according to the model of Battery case 3
Put and shape is replaced adjusting, it is achieved adapt to the casing test of Multiple Type on a work top, substantially increase equipment
Practicality, reduce use cost.
Further, the plate face each secondary seal lid 17 contacted with Battery case 3 is equipped with and Battery case 3
The transverse sealing projection 20 that each lateral opening matches.Transverse sealing projection 20 can be quality of rubber materials, with Battery case 3 side
The opening interference fit in face, it is possible to strengthen the sealing of secondary seal lid 17, improves test accuracy.
Further, lateral adjustments cylinder 18 is threaded connection part and is connected with side stand 19, if side stand 19 is provided with
The cylinder mounting holes 22 of dry genesis analysis.According to the actual height of opening, the height of lateral adjustments cylinder 18 can be adjusted
Joint, and then make the height of secondary seal lid 17 adapt with the height of lateral opening, improve sealing effectiveness, it is possible to make side stand 19
Adapt to the aperture position of multi-model number casing 3, reach the purpose that a frame is multiplex, reduce use cost further.
Lateral adjustments cylinder 18 is connected with master control cabinet 16, it is possible to automatization, intelligentized to lateral adjustments cylinder 18
The amount of feeding is controlled, and makes good sealing effect, and Battery case 3 without damaging, is improved the accuracy of test by test process.
Concrete, vertical governor motion 9 includes upright guide rail 23, upper frame 24 and vertically regulates cylinder 25, upright guide rail 23
Having at least four, the symmetrical both sides being located at support 1 upper one end, it runs through four corners of top sealing detection lid 5, pushes up
The top of portion's sealing detection lid 5 is provided with the upper frame 24 being connected with upright guide rail 23 top, and upper frame 24 top is provided with and vertically regulates gas
Cylinder 25, vertically the piston rod of regulation cylinder 25 upper surface downward through upper frame 24 and with top sealing detection lid 5 is connected.Pass through
Vertically the vertically moving of regulation cylinder 25, it is possible to make top sealing detection lid 5 away from or laminating Battery case 3 opening above.
Vertically regulation cylinder 25 is connected with master control cabinet 16, it is possible to automatization, intelligentized to vertically regulating cylinder 25
The amount of feeding is controlled, and makes good sealing effect, and Battery case 3 without damaging, is improved the accuracy of test by test process.
Further, strengthening sealing, the plate face that top sealing detection lid 5 contacts with Battery case 3 is provided with and battery
The vertical seal washer 26 that the top-open of casing 3 matches.
Use process:
Being fixed in fixed platform 2 by Battery case 3, model and position according to Battery case 3 are installed and regulate horizontal adjustment
Mechanism 8 and vertically governor motion 9.Battery case 3 is moved to sealing area by subsequent start-up cross motor 11, and regulation is laterally adjusted
Displacements of cylinders 18 and vertically regulation cylinder 25, make secondary seal lid 17 and top sealing detection lid 5 fit also with Battery case 3 respectively
Closure opening.Later on air-leakage detector 7 is tested.
After using technique scheme, the simple in construction of equipment, easy to operate, it is possible to the welding to Battery case efficiently
Sealing carries out detecting and drawing accurate data, and then can quickly judge that weld seam sealing is the most up to standard, substantially increases inspection
Survey efficiency.
Claims (10)
1. a Battery case air tightness detection equipment, it is characterised in that: include that support (1), support (1) top are provided with for solid
Determining the fixed platform (2) of Battery case (3), one end of support (1) is provided with the sealing of Battery case and opens and mechanism, this sealing open and
Mechanism includes that the side being respectively cooperating with Battery case (3) lateral opening and top-open seals lid and top sealing detection lid
(5), top sealing detection lid (5) is provided with and can connect the air inlet (29) that Battery case (3) is internal, air inlet after sealing
(29) it is connected with air-leakage detector (7) by trachea (6)；Sealing lid in side drives with side sealing and mechanism is connected, and top is close
Envelope detection lid (5) drives with top sealing and mechanism is connected；Air-leakage detector (7), side seal to drive and seal with mechanism and top
Drive and be all connected with master control cabinet (16) with mechanism.
A kind of Battery case air tightness detection equipment the most according to claim 1, it is characterised in that: described fixed platform
(2) some fixing threaded holes for self-contained battery casing (3) (10) it are provided with.
A kind of Battery case air tightness detection equipment the most according to claim 1, it is characterised in that: described fixed platform
(2) it is connected by laterally steering mechanism with between support (1), makes the fixed platform (2) can be transversely between support (1) both ends
Slide.
A kind of Battery case air tightness detection equipment the most according to claim 3, it is characterised in that: described laterally steering machine
Structure includes the cross motor (11) being located at support (1) the top other end, and cross motor (11) passes through cross lead screw (12) and is located at
The screw (13) of fixed platform (2) bottom connects, and what cross lead screw (12) both sides were also respectively symmetrically is provided with a cross slide way
(14), fixed platform (2) bottom be provided with coordinate with cross slide way laterally lead boots (15)；Cross motor (11) and master control cabinet
(16) connect.
A kind of Battery case air tightness detection equipment the most according to claim 1, it is characterised in that: described side seals and opens
Being level(l)ing mechanism (8) with mechanism, top seals and drives with mechanism is vertical governor motion (9).
A kind of Battery case air tightness detection equipment the most according to claim 1, it is characterised in that: described side seals lid
The secondary seal lid (17) matched with the opening of Battery case (3) side including at least one, level(l)ing mechanism (8) includes
Lateral adjustments cylinder (18) and side stand (19)；Each secondary seal lid (17) is all by lateral adjustments cylinder (18) and side stand
(19) connecting, side stand (19) is located at support (1) top, and support (1) is provided with some side stand installing holes, side stand (19) with
It is threaded connection part between side stand installing hole to connect；Lateral adjustments cylinder (18) is connected with master control cabinet (16).
A kind of Battery case air tightness detection equipment the most according to claim 6, it is characterised in that: each described two grades close
It is equipped with horizontal with what the lateral opening of Battery case (3) matched on the upper plate face contacted with Battery case (3) of capping (17)
Seal convexity (20).
A kind of Battery case air tightness detection equipment the most according to claim 6, it is characterised in that: described lateral adjustments gas
Cylinder (18) is threaded connection part and is connected with side stand (19), and side stand (19) is provided with the cylinder mounting holes of some genesis analysis
(22).
A kind of Battery case air tightness detection equipment the most according to claim 1, it is characterised in that: described vertical regulation machine
Structure (9) includes upright guide rail (23), upper frame (24) and vertically regulates cylinder (25), and upright guide rail (23) has at least four, right
The both sides being located at support (1) upper one end claimed, it runs through four corners at top sealing detection lid (5), top sealing detection
The top of lid (5) is provided with the upper frame (24) being connected with upright guide rail (23) top, and upper frame (24) top is provided with and vertically regulates cylinder
(25) piston rod of cylinder (25), is vertically regulated downward through upper frame (24) and with the upper surface at top sealing detection lid (5) even
Connect；Vertically regulate cylinder (25) to be connected with master control cabinet (16).
A kind of Battery case air tightness detection equipment the most according to claim 9, it is characterised in that: described top seals
The plate face that detection lid (5) contacts with Battery case (3) is provided with the vertical sealing that the top-open with Battery case (3) matches
Packing ring (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616422.0A CN106197892B (en) | 2016-07-30 | 2016-07-30 | A kind of Battery case air tightness detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616422.0A CN106197892B (en) | 2016-07-30 | 2016-07-30 | A kind of Battery case air tightness detection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106197892A true CN106197892A (en) | 2016-12-07 |
| CN106197892B CN106197892B (en) | 2018-09-07 |
Family
ID=57498315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610616422.0A Active CN106197892B (en) | 2016-07-30 | 2016-07-30 | A kind of Battery case air tightness detection equipment |
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| CN (1) | CN106197892B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894304A (en) * | 2017-09-29 | 2018-04-10 | 芜湖普威技研有限公司 | New energy battery bag air-tightness detection tool |
| WO2018103225A1 (en) * | 2016-12-09 | 2018-06-14 | 广州市永合祥自动化设备科技有限公司 | Battery air-tightness detection system |
| CN108195518A (en) * | 2018-01-16 | 2018-06-22 | 中航锂电技术研究院有限公司 | A kind of battery case air tightness testing method |
| CN109444025A (en) * | 2018-12-30 | 2019-03-08 | 隆昌市碧檀陶瓷有限公司 | A kind of wine jar antiseepage pressure testing system and test method |
| CN110132988A (en) * | 2019-06-12 | 2019-08-16 | 广东省智能机器人研究院 | A kind of power battery electrolyte leakage detection equipment |
| CN112665792A (en) * | 2020-11-09 | 2021-04-16 | 南京英尼格玛工业自动化技术有限公司 | Battery collet welding seam leak hunting device |
| CN114705367A (en) * | 2022-03-24 | 2022-07-05 | 安徽易科新能源科技有限公司 | Battery pack air tightness detection device and detection method thereof |
| CN114778007A (en) * | 2022-03-29 | 2022-07-22 | 张家港市固铝金属制品有限公司 | Battery box body air tightness detection tool |
| CN114964636A (en) * | 2022-08-02 | 2022-08-30 | 徐州力能电子科技有限公司 | Battery box body air tightness detection device for electric automobile and use method thereof |
| CN117537992A (en) * | 2023-12-27 | 2024-02-09 | 重庆储安科技创新中心有限公司 | Air tightness test equipment of battery box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018103225A1 (en) * | 2016-12-09 | 2018-06-14 | 广州市永合祥自动化设备科技有限公司 | Battery air-tightness detection system |
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| CN108195518A (en) * | 2018-01-16 | 2018-06-22 | 中航锂电技术研究院有限公司 | A kind of battery case air tightness testing method |
| CN109444025B (en) * | 2018-12-30 | 2024-06-07 | 隆昌市碧檀陶瓷有限公司 | Wine jar seepage-proofing pressure test system and test method |
| CN109444025A (en) * | 2018-12-30 | 2019-03-08 | 隆昌市碧檀陶瓷有限公司 | A kind of wine jar antiseepage pressure testing system and test method |
| CN110132988A (en) * | 2019-06-12 | 2019-08-16 | 广东省智能机器人研究院 | A kind of power battery electrolyte leakage detection equipment |
| CN112665792A (en) * | 2020-11-09 | 2021-04-16 | 南京英尼格玛工业自动化技术有限公司 | Battery collet welding seam leak hunting device |
| CN114705367A (en) * | 2022-03-24 | 2022-07-05 | 安徽易科新能源科技有限公司 | Battery pack air tightness detection device and detection method thereof |
| CN114778007A (en) * | 2022-03-29 | 2022-07-22 | 张家港市固铝金属制品有限公司 | Battery box body air tightness detection tool |
| CN114964636A (en) * | 2022-08-02 | 2022-08-30 | 徐州力能电子科技有限公司 | Battery box body air tightness detection device for electric automobile and use method thereof |
| CN114964636B (en) * | 2022-08-02 | 2022-10-25 | 徐州力能电子科技有限公司 | Battery box body air tightness detection device for electric automobile and use method thereof |
| CN117537992A (en) * | 2023-12-27 | 2024-02-09 | 重庆储安科技创新中心有限公司 | Air tightness test equipment of battery box |
| CN117537992B (en) * | 2023-12-27 | 2024-09-24 | 重庆储安科技创新中心有限公司 | Air tightness test equipment of battery box |
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| Publication number | Publication date |
|---|---|
| CN106197892B (en) | 2018-09-07 |
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