CN108982019A - A kind of lithium battery air tight test device - Google Patents

A kind of lithium battery air tight test device Download PDF

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Publication number
CN108982019A
CN108982019A CN201710413143.9A CN201710413143A CN108982019A CN 108982019 A CN108982019 A CN 108982019A CN 201710413143 A CN201710413143 A CN 201710413143A CN 108982019 A CN108982019 A CN 108982019A
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China
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vacuum
detection station
helium
block
cylinder
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CN201710413143.9A
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CN108982019B (en
Inventor
刘明山
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China Energy Construction Energy Storage Technology Wuhan Co ltd
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Zhangjiagang Ou Micro Automation R & D Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point

Abstract

The present invention relates to a kind of lithium battery air tight test device, mainly solve the problems, such as that existing lithium battery air tight test device detection efficiency and accuracy rate are low.The present invention is by using a kind of lithium battery air tight test device, including frame, it further include having the electric cabinet being installed on frame, the headlamp being installed on electric cabinet top frame inside casing, the grating scale being installed in below electric cabinet, it is installed in single detection station of electric cabinet two sides respectively, be installed on rear side of electric cabinet for vacuum mechanism and be installed on rear side of for vacuum mechanism for helium mechanism, the electric cabinet is electrically connected grating scale, single detection station, headlamp, for helium mechanism and for vacuum mechanism, the list detection station is equipped with two, the technical solution of respectively single detection station one and single detection station two, preferably solves the problems, such as this, it can be used as the air tight test of lithium battery.

Description

A kind of lithium battery air tight test device
Technical field
The present invention relates to a kind of lithium battery air tight test devices.
Background technique
Early period, lithium battery industry mostly use positive pressure bubble method detection, this kind of detection method is easy to cause battery case It is difficult to the deformation restored, particularly with metal shell lithium ion and is not suitable for, detection efficiency and accuracy rate are low, helium mass spectrum leak detection Instrument precision highest, it is very wide in the stringent products application of sealing requirements, but to the leakproofness and frock clamp of signal piping Ask higher.Working principle: battery surface leads to performance degradation because staining the impurity such as steam in order to prevent, must just use shell To seal.But at the sealing-in of shell or leading wire joint often generates some naked eyes because of a variety of causes and is difficult to send out Existing duck eye, so after component package, it is necessary to take certain methods to detect the presence or absence of these duck eyes.Helium Leak detection is exactly the small loophole checked on cell package shell using helium.It is small-sized because of helium atom, easily propagate through duck eye And it enters inside shell.Packaged component is put into the container full of helium first, and is pressurizeed, allows helium to pass through small Hole and enter shell in;It then takes out, and blows away the residual helium of shell surface with compressed air;Then it is examined using mass spectrograph The helium that test tube shell appearance is leaked out.In lithium battery industry, product poor sealing will lead to battery performance degradation, electrolyte The serious consequences such as leakage, battery bulging even explosion, cause product image to be badly damaged, therefore, lithium-ion battery sealing-performance Superiority and inferiority is most important.Lithium battery air tight test device detection efficiency and accuracy rate are low simultaneously.
For another example the utility model discloses lithium battery air-tightness detection device, packets by 204578358 U of Chinese patent literature CN Detection unit is included, the detection unit includes placing vertically on the support baseboard and support baseboard of lithium battery to be detected for placing Support frame, the support platform of guiding movement along the vertical direction is provided on support frame as described above, is provided in the support platform Structure is tested, the test structure includes for making the test block connected thereon and lithium battery to be measured seal the test of compression fit Cylinder, is provided with the guide rail extended along the vertical direction on support frame as described above, and the support platform sliding turns assigned on the guide rail, Be provided on the guide rail for after support platform is mobile in place on the guiding movement direction of support platform by the support Platform and guide rail limit the locking structure being fixed together.The lithium battery air-tightness detection device accuracy rate is low.
Summary of the invention
The technical problem to be solved by the present invention is to existing lithium battery air tight test device detection efficiency and accuracy rate are low Under problem, a kind of new lithium battery air tight test device is provided.It is able to solve using the lithium battery air tight test device Lithium battery air tight test device detection efficiency and the low problem of accuracy rate.The second technical problem to be solved by the present invention is It provides a kind of with detection method that is solving the corresponding lithium battery air tight test device of one of technical problem.
The technical solution that the present invention uses one of to solve above-mentioned technical problem is as follows: the present invention is by using a kind of lithium Battery air tightness verifying attachment, including frame further include having the electric cabinet being installed on frame, being installed in electric cabinet top frame Headlamp on inside casing, the grating scale being installed in below electric cabinet, the single detection station for being installed in electric cabinet two sides respectively, installing On rear side of electric cabinet for vacuum mechanism and be installed on rear side of for vacuum mechanism for helium mechanism, the electric cabinet electrically connects Connect grating scale, single detection station, headlamp, for helium mechanism and for vacuum mechanism, the list detection station is equipped with two, respectively It is described to pass through air inlet pipeline and corresponding single detection station respectively for vacuum mechanism for single detection station one and single detection station two Vacuum inlet connection, it is described for helium mechanism pass through respectively air inlet pipeline with it is corresponding list detection station helium air inlet Connection.
Preferably, described two single detection stations include column, and column is bolted on clamp bottom board, fixture Bottom plate is bolted on above detection station bracket, is respectively provided with sliding rail, sliding block, the column at left and right sides of the column Top is equipped with cylinder, and cylinder is fixed by cylinder fixed block, and the piston-rod end of the cylinder is equipped with screw thread, and piston rod penetrates gas The connector of cylinder connector is fixedly connected with cylinder connector, the cylinder jointing pass through cylinder connecting plate centre bore with The connection of cylinder connecting plate, and locked by the way that locking nut is fixed, the cylinder connecting plate is fixed on sliding block, and shoe surface is fixed Connecting plate, the connection plate surface fix upper seal closure fixed block and lower seal closure fixed block, upper seal closure by bolt respectively Vacuum (-tight) housing is fixed therein by fixed block and lower seal closure fixed block, and upper cover sealing plate is equipped at the top of vacuum (-tight) housing, is set inside vacuum (-tight) housing There is clamping piston, clamping piston bottom is equipped with pressure head.
It is highly preferred that being additionally provided with buffer on the column, buffer is fixed on column by buffer fixed block.
Preferably, described two single detection stations further include workpiece positioning block, and workpiece positioning block is bolted on Above clamp bottom board, workpiece positioning block bottom is equipped with vacuum inlet, and side is equipped with helium air inlet.
Preferably, it is described for helium mechanism include pass sequentially through tracheae connection air-source treater, solenoid valve one, solenoid valve Two, gas tank, two-position three way magnetic valve, divide air parcel one, divide air parcel two, two-position three way magnetic valve two, pipeline connecting parts one, pressure regulator One, pressure regulator two and pipeline connecting parts two, two-position three way magnetic valve three and divide air parcel three, air parcel three is divided to distribute helium respectively To detection station one for helium air inlet pipeline and detection station two for helium air inlet pipeline, the solenoid valve one and solenoid valve two divide It is not fixed on corresponding valve seat, the two-position three way magnetic valve one, two-position three way magnetic valve two and two-position three way magnetic valve three On be all provided with there are two solenoid valve three, be equipped with corresponding ball valve on the pipeline connecting parts one and pipeline connecting parts two.
Preferably, described for vacuum mechanism includes vacuum pump, leak detector, filter and pressure vacuum gauge, the vacuum pump It is respectively vacuum pump one, vacuum pump two and vacuum pump three equipped with three, three pumps form dual-purpose one spare switching state, and described three The air inlet of platform vacuum pump is all connected with air supply pipe, and air supply pipe is equipped with filter, and the gas outlet of the vacuum pump one passes through outlet Piping connection leak detector inlet end, outlet pipe be equipped with Pneumatic single-action ball valve, the leak detector outlet side respectively with distribution Block one, distribution block two connect, and described one one end of distribution block connects pressure vacuum gauge one, and other end connecting detection station one is for vacuum Air inlet pipeline, described two one end of distribution block connect pressure vacuum gauge two, other end connecting detection station two for vacuum air inlet pipeline, The vacuum pump two is connect with distribution block one and distribution block two respectively by two escape pipe of vacuum pump, the distribution block one and distribution Block two is connect with compressed air inlet pipe respectively.
To solve above-mentioned technical problem two The technical solution adopted by the invention is as follows:
A kind of method of inspection of lithium battery air tight test device, comprising the following steps:
Cell work-pieces: being manually put into workpiece positioning block by step 1, and after the completion of placement, manual operation button operation box is opened Dynamic button, cylinder piston rod downlink presses to vacuum (-tight) housing in the O-ring seal three of workpiece positioning block end face, to cell work-pieces Form the cavity of a sealing;
Step 2: it pressurizes to the seal cavity of formation;
Step 3: after a certain period of time, one power loss of two-position three way magnetic valve resets for pressurization, and pipeline disconnects, and vacuum pump two starts, Make to form negative pressure in seal cavity, after a certain period of time, the movement of second step is repeated, after movement twice;
Step 4: vacuum pump one is opened, and Pneumatic single-action ball valve is opened, the small leakage by leak detector to cell work-pieces shell It tests in hole;
Step 5: closing vacuum pump one, closes cylinder, manually takes out cell work-pieces, each reset.
The present invention drives vacuum (-tight) housing to move downward by cylinder, and cell work-pieces are formed with the cavity of a sealing;The present invention By the way that buffer is arranged, buffer reaches specific bit during running down to cylinder and is equipped with a buffer function, avoids hardness Contact;The present invention to the seal cavity of formation by carrying out filling helium for helium mechanism;The present invention is close by for vacuum mechanism It seals and forms negative pressure in cavity;The present invention checks the small loophole of cell work-pieces shell by vacuum pump one and leak detector;This Invention can be realized while right by two single detection stations of setting, respectively single detection station one and single detection station two Two lithium batteries are tested, and only driving one single detection station can also act only to test a lithium battery.
Detailed description of the invention
Fig. 1 is a kind of lithium battery air tight test schematic device of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is single detection station schematic diagram of Fig. 1;
Fig. 4 is the lateral sectional view of Fig. 3;
Fig. 5 is the partial sectional view in Fig. 3 at A;
Fig. 6 is Fig. 1 for helium structural scheme of mechanism;
Fig. 7 is the top view of Fig. 6;
Fig. 8 is Fig. 1 for vacuum mechanism schematic diagram;
Fig. 9 is the top view of Fig. 8.
In attached drawing:
1, frame 2, electric cabinet 3, grating scale
4, single detection station 5, headlamp 6, for helium mechanism
7, for vacuum mechanism 8, detection station bracket 9, button operation box
10, bottom plate 11, column 12, buffer fixed block
13, buffer 14, sliding rail 15, sliding block
16, cylinder 17, cylinder fixed block 18, cylinder jointing
19, cylinder connecting plate 20, locking nut 21, connecting plate
22, upper cover sealing plate 23, O-ring seal 1, upper seal closure fixed block
25, O-ring seal 2 26, clamping piston 27, pressure head
28, lower seal closure fixed block 29, vacuum (-tight) housing 30, Pneumatic single-action ball valve
31, supply air line 32, filter 33, leak detector inlet pipe road
34, leak detector 35, pressure vacuum gauge 1, distribution block one
37, pressure vacuum gauge 2 38, distribution block 2 39, vacuum pump one
40, vacuum pump 2 41, vacuum pump 3 42, two escape pipe of vacuum pump
43, one vacuum air inlet pipe 44 of detection station, two vacuum air inlet pipe 45 of detection station, ball valve
46, pipeline connecting parts 1, pressure regulator 1, pressure regulator two
49, pipeline connecting parts 2 50, air-source treater 51, valve seat
52, solenoid valve 1, solenoid valve 2 54, two-position three way magnetic valve one
55, two-position three way magnetic valve 2 56, two-position three way magnetic valve 3 57, gas tank
58, divide air parcel 1, divide air parcel 2 60, divide air parcel three
61, detection station one is for helium air inlet pipe 62, detection station two for helium air inlet pipe 63, workpiece positioning block
64, cell work-pieces 65, O-ring seal 3 66, O-ring seal four
67, helium air inlet 68, vacuum inlet 69, compressed air inlet pipe
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only For illustrating the present invention rather than limiting the scope of the invention.
As shown in Figure 1, 2, a kind of lithium battery air tight test device, including frame 1 further include being installed on frame 1 Electric cabinet 2, be installed on 2 top frame inside casing of electric cabinet headlamp 5, be installed in the lower section of electric cabinet 2 grating scale 3, point Be not installed in single detection station 4 of 2 two sides of electric cabinet, be installed in the rear side of electric cabinet 2 for vacuum mechanism 7 and be installed in for true 7 rear side of empty mechanism for helium mechanism 6, the electric cabinet 2 is electrically connected grating scale 3, single detection station 4, headlamp 5, for helium Mechanism of qi structure 6 and for vacuum mechanism 7, it is described to be connected for vacuum mechanism 7 by the vacuum inlet 69 of air inlet pipeline and single detection station 4 It connects, described to be connect by air inlet pipeline with the helium air inlet 68 of single detection station 4 for helium mechanism 6, the electric cabinet 2 includes Coupled button controls box 9.Whether in place the grating scale 3 is used to detect distance that single detection station 4 moves up and down, To ensure the accuracy of single detection of detection station 4.Two single detection stations 4, respectively single detection station are set in the present embodiment One and single detection station two, therefore can realize while two lithium batteries are tested, it can also only one list detection station of driving Movement is to only test a lithium battery.
As shown in Fig. 3,4,5, described two list detection stations 4 include that column 11 is bolted on bottom plate 10, Bottom plate 10 is bolted on 8 top of detection station bracket, is respectively provided with sliding rail 14, sliding block at left and right sides of the column 11 15, cylinder 16 is equipped at the top of the column 11, cylinder 16 passes through the fixation of cylinder fixed block 17, the piston-rod end of the cylinder 16 Equipped with screw thread, the connector that piston rod penetrates cylinder connector 18 is fixedly connected with cylinder connector 18, and the cylinder connects First 18 centre bores for passing through cylinder connecting plate 19 are connect with cylinder connecting plate 19, and by the fixed locking of locking nut 20, described Cylinder connecting plate 19 is fixed on sliding block 15,15 surface fixed connecting plate 21 of sliding block, and 21 surface of connecting plate passes through bolt point Seal closure fixed block 24 and lower seal closure fixed block 28 Gu Ding not be gone up, upper seal closure fixed block 24 and lower seal closure fixed block 28 will Vacuum (-tight) housing 29 is fixed therein, and upper cover sealing plate 22 is equipped at the top of vacuum (-tight) housing 29, clamping piston 26 is equipped with inside vacuum (-tight) housing 29, compresses 26 bottom of piston is equipped with pressure head 27.Buffer 13 is additionally provided on the column 11, buffer 13 is solid by buffer fixed block 12 It is scheduled on column 11.The list detection station 4 further includes workpiece positioning block 64, and workpiece positioning block 64 is bolted on bottom plate 10 tops, 64 bottom of workpiece positioning block are equipped with vacuum inlet 69, and side is equipped with helium air inlet 68.
As shown in Figure 6,7, air-source treater 50, the solenoid valve for helium mechanism 6 including passing sequentially through tracheae connection One 52, solenoid valve 2 53, gas tank 57, two-position three way magnetic valve 1, divide air parcel 1, divide air parcel 2 59, two-position three-way electromagnetic Valve 2 55, pipeline connecting parts 1, pressure regulator 1, pressure regulator 2 48 and pipeline connecting parts 2 49, two-position three way magnetic valve three 56 and divide air parcel 3 60, divides air parcel 3 60 that helium is separately dispensed into detection station one for helium air inlet pipe 61 and detection station Two are separately fixed on corresponding valve seat for helium air inlet pipe 62, the solenoid valve 1 and solenoid valve 2 53, and the pipeline connects Corresponding ball valve 45 is equipped on fitting 1 and pipeline connecting parts 2 49.
It is as shown in Figure 8,9, described to include vacuum pump, leak detector 34, filter 32 and pressure vacuum gauge for vacuum mechanism 7, It is respectively vacuum pump 1, vacuum pump 2 40 and vacuum pump 3 41 that the vacuum pump, which is equipped with three, and it is standby that three pumps form dual-purpose one Switching state, the air inlet of three vacuum pumps are all connected with air supply pipe 31, and air supply pipe 31 is equipped with filter 32, described true The gas outlet of sky pump 1 connects 34 inlet end of leak detector by leak detector inlet pipe road 33, and leak detector inlet pipe road 33 is equipped with pneumatic Single-acting ball valve 30,34 outlet side of leak detector are connect with distribution block 1, distribution block 2 36 respectively, the distribution block 1 One end connects pressure vacuum gauge 1, and other end connecting detection station one is for vacuum air inlet pipe 43, described 2 38 one end of distribution block Pressure vacuum gauge 2 37 is connected, other end connecting detection station two passes through true for vacuum air inlet pipeline 44, the vacuum pump 2 40 Two escape pipes 42 of sky pump are connect with distribution block 1 and distribution block 2 38 respectively, and the distribution block 1 and distribution block 2 38 are distinguished It is connect with compressed air inlet pipe 69.
A kind of method of inspection of lithium battery air tight test device, includes the following steps:
Cell work-pieces 64: being manually put into workpiece positioning block 63 by step 1, after the completion of placement, manual operation push-botton operation 9 start button of box, 16 piston rod downlink of cylinder make vacuum (-tight) housing 29 press to the O-ring seal 3 65 of 63 end face of workpiece positioning block On, cell work-pieces 64 are formed with the cavity of a sealing;
Step 2: it pressurizes to the seal cavity of formation;
Step 3: after a certain period of time, one 54 power loss of two-position three way magnetic valve resets for pressurization, and pipeline disconnects, vacuum pump 2 40 Starting makes to form negative pressure in seal cavity, after a certain period of time, the movement of second step is repeated, after movement twice;
Step 4: vacuum pump 1 is opened, and Pneumatic single-action ball valve 30 is opened, by leak detector 34 to 64 shell of cell work-pieces The small loophole of body is tested;
Step 5: closing vacuum pump 1, closes cylinder 16, artificial to take out cell work-pieces 64, each reset.
Cell work-pieces 64: being manually put into workpiece positioning block 63 by working principle, after the completion of placement, manual operation button behaviour Make 9 start button of box, 16 piston rod downlink of cylinder, since 16 piston-rod end of cylinder is connected by cylinder jointing 18 and cylinder Fishplate bar 19 is fixedly connected, and cylinder connecting plate 19 is fixedly connected with connecting plate 21, and vacuum (-tight) housing 29 passes through upper 24 He of seal closure fixed block Lower seal closure fixed block 28 is fixed on connecting plate 21, therefore 16 downlink of cylinder piston rod, vacuum (-tight) housing 29 are moved downward therewith, arrived Up to designated position, 16 piston rod of cylinder and cylinder jointing 18 touch buffer 13, and buffer 13 is downward to cylinder 16 Specific bit is reached in operational process and is equipped with a buffer function, avoids hard contact.Vacuum (-tight) housing 29 covers on cell work-pieces 64 at this time Outside, and with 63 end face of workpiece positioning block be in close contact, be pressed onto the O-ring seal 3 65 of 63 end face of workpiece positioning block, Cell work-pieces 64 are formed with the cavity of a sealing.The seal cavity of formation is carried out filling helium, at this point, two-position three way magnetic valve One 54 are powered on to form access, and the nitrogen in gas tank 58 passes sequentially through point air parcel 1, divides air parcel 2 59, two-position three-way electromagnetic Valve 2 55, pressure regulator 1, pressure regulator 2 48, two-position three way magnetic valve 3 56 and divide air parcel 3 60, then by dividing air parcel three Helium is separately dispensed into detection station one for helium air inlet pipeline 61 and detection station two for helium air inlet pipeline 62, finally by 60 By corresponding helium air inlet 67, helium enters the cavity of sealing by the aperture of 63 bottom of workpiece positioning block at this time It is interior, it pressurizes to cavity.After a certain period of time, one 54 power loss of two-position three way magnetic valve resets for pressurization, and pipeline disconnects, vacuum pump two 40 startings so that vacuum enters in supply air line after being filtered by filter, then are divided vacuum by two escape pipe 42 of vacuum pump It is not assigned to distribution block 1 and distribution block 2 38, then exports vacuum to one vacuum air inlet pipe 43 of detection station and detection work Two vacuum air inlet pipe 44 of position, last vacuum is transported to seal cavity by corresponding vacuum inlet 68, thus in seal cavity Form negative pressure.After a certain period of time, the movement of second step is repeated, after movement twice.Vacuum pump 1 is opened, Pneumatic single-action Ball valve 30 is opened, by leak detector 34, export helium to one vacuum air inlet pipe 43 of detection station and two vacuum of detection station into Tracheae 44 checks the small loophole of 64 shell of cell work-pieces into corresponding detection station one and detection station two.It should Principle checks the small loophole of 64 outer housing of cell work-pieces using helium, small-sized because of helium atom, easily propagate through duck eye and It enters inside shell.Cell work-pieces 64 are put into the seal cavity full of helium, and are pressurizeed, allow helium by duck eye into Enter in shell;It is tested by leak detector 34 to 64 shell of cell work-pieces, if it is leaky to encounter cell work-pieces 64, accordingly Detection station will alarm.
Although the illustrative specific embodiment of the present invention is described above, in order to the technology of the art Personnel are it will be appreciated that the present invention, but the present invention is not limited only to the range of specific embodiment, to the common skill of the art For art personnel, as long as long as various change the attached claims limit and determine spirit and scope of the invention in, one The innovation and creation using present inventive concept are cut in the column of protection.

Claims (6)

1. a kind of lithium battery air tight test device, including frame (1), it is characterised in that: further include being installed on frame (1) Electric cabinet (2), the headlamp (5) being installed on electric cabinet (2) top frame inside casing, the light that is installed in below electric cabinet (2) Grid ruler (3), the single detection station (4) for being installed in electric cabinet (2) two sides respectively, be installed on rear side of electric cabinet (2) for vacuum machine Structure (7) and be installed on rear side of for vacuum mechanism (7) for helium mechanism (6), the electric cabinet (2) is electrically connected grating scale (3), single detection station (4), headlamp (5), for helium mechanism (6) and for vacuum mechanism (7), the list detection station (4) sets Have two, respectively single detection station one and single detection station two, it is described for vacuum mechanism (7) respectively by air inlet pipeline with it is right The vacuum inlet for the single detection station answered connects, described to pass through air inlet pipeline and corresponding single inspection respectively for helium mechanism (6) Survey the helium air inlet connection of station.
2. a kind of lithium battery air tight test device according to claim 1, it is characterised in that described two single detection works Position (4) includes column (11), and column (11) is bolted on bottom plate (10), and bottom plate (10) is bolted on inspection It surveys above station bracket (8), is respectively provided with sliding rail (14), sliding block (15), the column (11) at left and right sides of the column (11) Top is equipped with cylinder (16), and cylinder (16) is fixed by cylinder fixed block (17), and the piston-rod end of the cylinder (16) is equipped with Screw thread, the connector that piston rod penetrates cylinder connector (18) are fixedly connected with cylinder connector (18), and the cylinder connects The centre bore that head (18) passes through cylinder connecting plate (19) is connect with cylinder connecting plate (19), and passes through locking nut (20) fixing lock Tightly, the cylinder connecting plate (19) is fixed on sliding block (15), sliding block (15) surface fixed connecting plate (21), the connecting plate (21) surface fixes upper seal closure fixed block (24) and lower seal closure fixed block (28), upper seal closure fixed block by bolt respectively (24) vacuum (-tight) housing (29) is fixed therein with lower seal closure fixed block (28), upper cover sealing plate is equipped at the top of vacuum (-tight) housing (29) (22), clamping piston (26) are equipped with inside vacuum (-tight) housing (29), clamping piston (26) bottom is equipped with pressure head (27).
3. a kind of lithium battery air tight test device according to claim 2, it is characterised in that on the column (11) also Equipped with buffer (13), buffer (13) is fixed on column (11) by buffer fixed block (12).
4. a kind of lithium battery air tight test device according to claim 1 or 2, it is characterised in that described two single detections Station (4) further includes workpiece positioning block (64), and workpiece positioning block (64) is bolted on above bottom plate (10), and workpiece is fixed Position block (64) bottom is equipped with vacuum inlet (69), and side is equipped with helium air inlet (68).
5. a kind of lithium battery air tight test device according to claim 1, it is characterised in that described for helium mechanism (6) Air-source treater (50), solenoid valve one (52), solenoid valve two (53), gas tank (57), two including passing sequentially through tracheae connection Three-way magnetic valve one (54) divides air parcel one (58), divides air parcel two (59), two-position three way magnetic valve two (55), pipeline connecting parts one (46), pressure regulator one (47), pressure regulator two (48) and pipeline connecting parts two (49), two-position three way magnetic valve three (56) and divide gas Block three (60) divides air parcel three (60) that helium is separately dispensed into detection station one and supplies for helium air inlet pipe (61) and detection station two Helium air inlet pipe (62), the solenoid valve one (52) and solenoid valve two (53) are separately fixed on corresponding valve seat, the pipeline Corresponding ball valve (45) are equipped on connector one (46) and pipeline connecting parts two (49).
6. a kind of lithium battery air tight test device according to claim 1, it is characterised in that described for vacuum mechanism (7) Including vacuum pump, leak detector (34), filter (32) and pressure vacuum gauge, it is respectively vacuum pump one that the vacuum pump, which is equipped with three, (39), vacuum pump two (40) and vacuum pump three (41), three pumps form dual-purpose one spare switching state, three vacuum pumps Air inlet is all connected with air supply pipe (31), and air supply pipe (31) is equipped with filter (32), and the gas outlet of the vacuum pump one (39) is logical Leak detector inlet pipe road (33) connection leak detector (34) inlet end is crossed, leak detector inlet pipe road (33) is equipped with Pneumatic single-action ball valve (30), leak detector (34) outlet side is connect with distribution block one (36), distribution block two (36) respectively, the distribution block one (36) One end connects pressure vacuum gauge one (35), and other end connecting detection station one is for vacuum air inlet pipe (43), the distribution block two (38) one end connection pressure vacuum gauge two (37), other end connecting detection station two is for vacuum air inlet pipeline (44), the vacuum Two (40) of pump are connect with distribution block one (36) and distribution block two (38) respectively by two escape pipe 42 of vacuum pump, the distribution block one (36) it is connect respectively with compressed air inlet pipe (70) with distribution block two (38).
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CN109406065A (en) * 2019-01-04 2019-03-01 湖南阿提斯智能装备有限公司 A kind of side's shell lithium battery casing air-tightness detection device
CN111842210A (en) * 2020-07-14 2020-10-30 宁波格劳博机器人有限公司 Full-automatic accurate leak hunting production line of button type lithium ion battery electricity core
CN117419864A (en) * 2023-12-19 2024-01-19 广东启新汽车零部件有限公司 Frock clamp of gas tightness of helium detection water course with adjustable

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