Battery airtightness detection equipment

Abstract

The invention relates to the technical field of battery airtightness detection, in particular to battery airtightness detection equipment, which comprises a machine table, a control box, a fixed seat, a switching sliding seat, a translation driving mechanism, a fixed clamping plate, two groups of clamping mechanisms, a side pressure positioning mechanism, a mounting plate, a lifting seat, a lifting driving mechanism, a plurality of airtightness detection heads and an airtightness detection device, one air tightness detection head is communicated with the air tightness detection device through one air pipe, the fixed clamping plate is provided with two groups of battery placing structures, each group of battery placing structures comprises a plurality of placing holes concavely formed in the fixed clamping plate, and the clamping mechanism is used for clamping batteries in the placing holes of the battery placing structures; the plurality of placing holes of the battery placing structure are used for being in one-to-one correspondence with the plurality of airtightness detection heads. According to the air tightness detection device, the batteries are alternately conveyed to the detection position through the two battery placing structures, the air tightness detection efficiency of the batteries is greatly improved, the position precision of the batteries is high, the stability is good, and air tightness detection of the batteries of different specifications can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of battery air tightness detection, and in particular to a battery air tightness detection device. Background Art

[0002] In the production and manufacturing process of batteries, the air tightness of batteries directly affects the quality of batteries, so it is necessary to test the air tightness of batteries. Among the existing patents, the Chinese patent document with application number 202322854988.5 discloses a battery air tightness detection device, including a detection box, a clamping mechanism, an air extraction and injection mechanism, and a detection member; wherein the detection box has a closed detection chamber; the clamping mechanism includes a driving assembly, a first clamping plate, and a guide member, the first clamping plate and the first cavity wall of the detection chamber are separated to form a placement position, the driving assembly is connected to the first clamping plate in a transmission manner to drive the first clamping plate to clamp or release the battery, and two guide members are arranged in the detection chamber along the first direction, and the guide member is used to guide the first clamping plate to limit the position; the air extraction and injection mechanism is used to connect to the injection hole of the battery; the detection member is used to detect whether there is a detection gas in the detection chamber. This patent document needs to stop the air tightness detection of the battery when the battery is loaded and unloaded, which makes the cycle of the air tightness detection longer and the efficiency of the air tightness detection low. Therefore, the defects are very obvious, and it is urgent to provide a solution. Summary of the invention

[0003] In order to solve the above technical problems, an object of the present invention is to provide a battery airtightness detection device.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A battery airtight detection device, which includes a machine table, a control box installed on the machine table, a fixed seat installed on the control box, a switching slide seat horizontally slidably connected to the fixed seat, a translation drive mechanism installed on the control box or / and the fixed seat and drivingly connected to the switching slide seat, a fixed clamping plate arranged on the top surface of the switching slide seat, two groups of clamping mechanisms oppositely installed on the fixed seat, a side pressure positioning mechanism installed on the control box and located on the front side of the fixed seat, a mounting plate located on the rear side of the fixed seat, a lifting seat vertically slidably connected to the mounting plate, a lifting drive mechanism installed on the mounting plate and used to drive the lifting seat to lift and lower, a plurality of airtight detection heads installed on the lifting seat, an airtight detection device installed on the machine table or / and the control box, and a vacuum pumping device communicated with the airtight detection device. An airtight detection head is communicated with the airtight detection device through a gas pipe. The side pressure positioning mechanism is correspondingly arranged with the plurality of airtight detection heads. Two groups of battery placing structures are arranged on the fixed clamping plate in the length direction. The two groups of clamping mechanisms are respectively arranged in one-to-one correspondence with the two groups of battery placing structures. Each group of battery placing structures includes a plurality of placing holes recessed in the fixed clamping plate. The plurality of placing holes are arranged along the length direction of the fixed clamping plate. The clamping mechanism is used to clamp the battery in the placing hole of the battery placing structure. The plurality of placing holes of the battery placing structure are used to be respectively arranged in one-to-one correspondence with the plurality of airtight detection heads. As the switching slide seat reciprocates, the two groups of battery placing structures alternately move below the plurality of airtight detection heads.

[0006] Further, the clamping mechanism includes a clamping driver installed on the switching slide seat or / and the fixed clamping plate, and two translation plates stacked up and down. The end parts of the two translation plates are respectively fixedly connected to the two clamping ends of the clamping driver. The clamping driver is used to drive the two translation plates to reciprocate in opposite directions. A plurality of clamping blocks are arranged on the translation plate in the length direction. The clamping blocks of the two translation plates are arranged at intervals on the same straight line. A clamping block on one translation plate cooperates with a clamping block on the other translation plate to clamp the battery in the placing hole.

[0007] Further, the fixed clamping plate is provided with a chute penetrating through the plurality of placing holes. The two translation plates of each group of clamping mechanisms are slidably arranged in the chute in a stacked manner. The clamping blocks can extend into the placing holes.

[0008] Further, limit members are installed at both ends of the switching slide seat. The fixed seat is located between the two limit members. The limit members are used to abut against the side wall of the fixed seat.

[0009] Further, the side pressure positioning mechanism includes a telescopic driver, a swing plate and a pressing plate. The telescopic driver is inclined. One end of the telescopic driver is hinged to the control box, and the other end of the telescopic driver is hinged to the middle of the swing plate. The bottom end of the swing plate is hinged to the control box. The pressing plate is arranged at the top end of the swing plate. The pressing plate is movably arranged on the front side of the fixed clamping plate.

[0010] Further, the side pressing and positioning mechanism further includes an elastic buffer assembly. The pressing plate is convexly provided with a rotating ear, and the rotating ear is rotatably connected to the top end of the swing plate. One end of the elastic buffer assembly is fixedly connected to the side wall of the swing plate, and the other end of the elastic buffer assembly is connected to the middle of the pressing plate.

[0011] Further, the elastic buffer assembly includes an adjusting bolt, a fixing block and a spring. A through hole is formed in the middle of the pressing plate. The stud of the adjusting bolt passes through the through hole and is threadedly connected to the fixing block. The fixing block is installed on the side wall of the swing plate. The spring is sleeved outside the stud of the adjusting bolt, and the two ends of the spring are elastically abutted against the pressing plate and the fixing block respectively.

[0012] Further, the airtight detection head includes a suction cup, a connecting member, a sealing ring and a locking plate. The lifting seat is coaxially provided with an embedding hole, a through hole and a mounting hole from top to bottom in sequence. A straight pipe is communicated with the bottom end of the connecting member. The top of the suction cup is inserted into the mounting hole. The connecting member is embedded in the embedding hole. The straight pipe passes through the through hole and is inserted into the central hole of the suction cup. The locking plate is installed on the lifting seat and is used to limit the connecting member in the embedding hole. The sealing ring is arranged between the locking plate and the top end face of the connecting member. The sealing ring surrounds the top port of the connecting member. The locking plate is provided with an insertion hole communicated with the connecting member. One end of the air pipe is inserted into the insertion hole. The peripheral wall of the straight pipe is in close contact with the inner wall of the central hole of the suction cup.

[0013] Further, the airtight detection device includes a frame installed on the machine table or / and the control box, a housing installed on the frame, a plurality of vacuum gauges embedded on the outer surface of the housing, and a plurality of vacuum valves installed in the housing. The plurality of vacuum valves, the plurality of airtight detection heads and the plurality of vacuum gauges are arranged in one-to-one correspondence. One vacuum gauge is communicated with an air pipe through one vacuum valve. One vacuum valve is communicated with an airtight detection head through one air pipe. All the vacuum valves are communicated with the vacuum pumping device.

[0014] Further, the airtight detection device further includes a plurality of indicator lights embedded on the outer surface of the housing. The plurality of indicator lights are respectively electrically connected to the plurality of vacuum gauges in one-to-one correspondence.

[0015] Advantages of the present invention: In practical applications, multiple airtight detection heads and side pressure positioning mechanisms are in the detection position. There is a loading and unloading position on both sides of the detection position. The translation drive mechanism drives the switching slide seat together with the fixed clamping plate and two groups of clamping mechanisms to move horizontally back and forth, so that the two battery placement structures on the fixed clamping plate alternately move to the detection position. When one group of battery placement structures and one group of clamping mechanisms are in the detection position, the other group of battery placement structures and the other group of clamping mechanisms are in the loading and unloading position; a battery is placed in each of the multiple placement holes of the battery placement structure in the detection position, and the corresponding clamping mechanism clamps the multiple batteries in the battery placement structure. The side pressure end of the side pressure positioning mechanism laterally abuts against the side wall of the battery in the placement hole. Through the inner wall of the placement hole and the side pressure end of the side pressure positioning mechanism to block the battery, the front and rear positions of the battery in the placement hole are positioned to ensure the position accuracy and stability of the battery. Then, the lifting drive mechanism drives the lifting seat together with multiple airtight detection heads to descend until the multiple airtight detection heads respectively closely cover the liquid injection ports of the multiple batteries. Finally, the airtight detection device performs airtight detection on each battery respectively. Since one airtight detection head is connected to the airtight detection device through a trachea, it is possible to perform airtight detection on each battery independently at the same time; at the same time, the clamping mechanism in the loading and unloading position releases the battery in the placement hole of the corresponding battery placement structure. After the operator or an external machine takes away the detected battery, the battery to be detected is placed in the placement hole of the battery placement structure. After the battery to be detected is placed in the placement hole of the battery placement structure, the corresponding clamping mechanism clamps the battery. After the device completes the airtight detection of a group of batteries (multiple batteries), the translation drive mechanism drives the switching slide seat together with the fixed clamping plate and two groups of clamping mechanisms to translate, so that the battery placement structure carrying the batteries that have completed airtight detection moves to the loading and unloading position, and the battery placement structure carrying the batteries to be airtight detected moves to the detection position. The two battery placement structures alternately transport batteries to the detection position, greatly improving the efficiency of airtight detection of batteries; in addition, since the clamping mechanism and the side pressure positioning mechanism cooperate with each other to position the battery in the placement hole, the position accuracy of the battery is high, the stability is good, and it can meet the airtight detection of batteries of different specifications, with good versatility and strong practicability. Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the present invention after hiding the machine platform.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the switching slide seat, fixed clamping plate and clamping mechanism of the present invention.

[0019] Figure 4Exploded structural schematic diagram of the switching slide, fixed clamping plate and clamping mechanism of the present invention.

[0020] Figure 5 Stereoscopic structural schematic diagram of the side pressure positioning mechanism of the present invention.

[0021] Figure 6 Stereoscopic structural schematic diagram of the lifting drive mechanism, lifting seat, mounting plate and airtight detection head of the present invention.

[0022] Figure 7 Cross-sectional view of the lifting seat and the airtight detection head of the present invention.

[0023] Figure 8 Stereoscopic structural schematic diagram of the frame, control box and airtight detection device of the present invention.

[0024] Explanation of reference numerals:

[0025] 1. Machine table; 2. Control box; 3. Translation drive mechanism; 4. Fixed clamping plate; 5. Clamping mechanism; 6. Side pressure positioning mechanism; 7. Mounting plate; 8. Lifting seat; 9. Lifting drive mechanism; 10. Airtight detection head; 11. Airtight detection device; 12. Battery placement structure; 13. Placement hole; 14. Clamping driver; 15. Translation plate; 16. Clamping block; 17. Chute; 18. Limiting member; 19. Telescopic driver; 20. Swing plate; 21. Pressing plate; 22. Elastic buffer assembly; 23. Adjusting bolt; 24. Fixed block; 25. Spring; 26. Through hole; 27. Suction cup; 28. Connecting member; 29. Sealing ring; 30. Locking plate; 31. Embedded hole; 32. Through hole; 33. Mounting hole; 34. Straight pipe; 35. Insertion hole; 36. Frame; 37. Outer cover; 38. Vacuum gauge; 39. Vacuum valve; 40. Indicator light; 41. Cushion; 42. Fixed seat; 43. Switching slide. Detailed implementation manners

[0026] For the convenience of understanding by those skilled in the art, the present invention will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the implementation manners does not limit the present invention.

[0027] As Figures 1 to 8As shown in the figure, a battery airtightness detection device provided by the present invention includes a machine table 1, a control box 2 installed on the machine table 1, a fixed seat 42 installed on the control box 2, a switching slide seat 43 horizontally slidably connected to the fixed seat 42, a translation drive mechanism 3 installed on the control box 2 or / and the fixed seat 42 and drivingly connected to the switching slide seat 43, a fixed clamping plate 4 provided on the top surface of the switching slide seat 43, two groups of clamping mechanisms 5 oppositely installed on the fixed seat 42, a side pressure positioning mechanism 6 installed on the control box 2 and located on the front side of the fixed seat 42, a mounting plate 7 located on the rear side of the fixed seat 42, a lifting seat 8 vertically slidably connected to the mounting plate 7, a lifting drive mechanism 9 installed on the mounting plate 7 and used to drive the lifting of the lifting seat 8, a plurality of airtightness detection heads 10 installed on the lifting seat 8, an airtightness detection device 11 installed on the machine table 1 or / and the control box 2, and a vacuum pumping device communicated with the airtightness detection device 11. One airtightness detection head 10 is communicated with the airtightness detection device 11 via a trachea. The side pressure positioning mechanism 6 is correspondingly arranged with the plurality of airtightness detection heads 10. The fixed clamping plate 4 is provided with two groups of battery placement structures 12 in the length direction. The two groups of clamping mechanisms 5 are respectively arranged in one-to-one correspondence with the two groups of battery placement structures 12. Each group of battery placement structures 12 includes a plurality of placement holes 13 recessed in the fixed clamping plate 4. The plurality of placement holes 13 are arranged along the length direction of the fixed clamping plate 4. The clamping mechanism 5 is used to clamp the battery in the placement hole 13 of the battery placement structure 12. The plurality of placement holes 13 of the battery placement structure 12 are respectively arranged in one-to-one correspondence with the plurality of airtightness detection heads 10. As the switching slide seat 43 reciprocates, the two groups of battery placement structures 12 alternately move below the plurality of airtightness detection heads 10.

[0028] In practical applications, multiple airtight detection heads 10 and the side pressure positioning mechanism 6 are in the detection position. There is a loading and unloading position on both sides of the detection position. The translation drive mechanism 3 drives the switching slider 43 to drive the fixed clamping plate 4 and the two groups of clamping mechanisms 5 to move horizontally back and forth, so that the two groups of battery placement structures 12 on the fixed clamping plate 4 alternately move to the detection position. When a group of battery placement structures 12 and a group of clamping mechanisms 5 are in the detection position, the other group of battery placement structures 12 and the other group of clamping mechanisms 5 are in the loading and unloading position; a battery is placed in each of the multiple placement holes 13 of the battery placement structure 12 in the detection position, and the corresponding clamping mechanism 5 clamps the multiple batteries in the battery placement structure 12. The side pressure end of the side pressure positioning mechanism 6 laterally abuts against the side wall of the battery in the placement hole 13. Through the blocking of the battery by the inner wall of the placement hole 13 and the side pressure end of the side pressure positioning mechanism 6, the front and rear positions of the battery in the placement hole 13 are positioned to ensure the position accuracy and stability of the battery. Then, the lifting drive mechanism 9 drives the lifting seat 8 to drive the multiple airtight detection heads 10 to descend until the multiple airtight detection heads 10 respectively tightly cover the liquid injection ports of the multiple batteries. Finally, the airtight detection device 11 performs airtight detection on each battery respectively. Since an airtight detection head 10 is connected to the airtight detection device 11 through a trachea, it can perform airtight detection on each battery independently at the same time; at the same time, the clamping mechanism 5 in the loading and unloading position releases the battery in the placement hole 13 of the corresponding battery placement structure 12. After the operator or an external machine takes away the detected battery, the battery to be detected is placed in the placement hole 13 of the battery placement structure 12. After the battery to be detected is placed in the placement hole 13 of the battery placement structure 12, the corresponding clamping mechanism 5 clamps the battery. After the equipment completes the airtight detection of a group of batteries (multiple batteries), the translation drive mechanism 3 drives the switching slider 43 to drive the fixed clamping plate 4 and the two groups of clamping mechanisms 5 to translate, so that the battery placement structure 12 carrying the batteries that have completed airtight detection moves to the loading and unloading position, and the battery placement structure 12 carrying the batteries to be airtight detected moves to the detection position. The two groups of battery placement structures 12 alternately transport the batteries to the detection position, greatly improving the efficiency of airtight detection of the batteries; in addition, since the clamping mechanism 5 and the side pressure positioning mechanism 6 cooperate to position the battery in the placement hole 13, the position accuracy of the battery is high, the stability is good, and it can meet the airtight detection of batteries of different specifications, with good versatility and strong practicability.

[0029] In this embodiment, the clamping mechanism 5 includes a clamping driver 14 installed on the switching slide 43 and / or the fixed clamping plate 4, and two translation plates 15 that are slidably arranged in an upper and lower stacked manner. The end portions of the two translation plates 15 are respectively fixedly connected to the two clamping ends of the clamping driver 14. The clamping driver 14 is used to drive the two translation plates 15 to reciprocate in opposite directions. The translation plates 15 are provided with a plurality of clamping blocks 16 in the length direction. The clamping blocks 16 of the two translation plates 15 are arranged at intervals on the same straight line. A clamping block 16 on one translation plate 15 cooperates with a clamping block 16 on the other translation plate 15 to clamp the battery in the placement hole 13. Specifically, the clamping driver 14 can adopt a finger cylinder.

[0030] In practical applications, after a plurality of batteries are respectively placed in the plurality of placement holes 13 of the battery placement structure 12, the clamping driver 14 of the corresponding clamping mechanism 5 drives the two translation plates 15 to move synchronously in opposite directions until the clamping blocks 16 of the two translation plates 15 cooperate to clamp the battery; when the detected battery moves to the loading and unloading position, the clamping driver 14 of the corresponding clamping mechanism 5 drives the two translation plates 15 to move synchronously in opposite directions until the clamping blocks 16 of the two translation plates 15 release the battery.

[0031] In this embodiment, the fixed clamping plate 4 is provided with a chute 17 that penetrates through the plurality of placement holes 13. The two translation plates 15 of each set of clamping mechanisms 5 are slidably arranged in the chute 17 in a stacked manner, and the clamping blocks 16 can extend into the placement holes 13. This structural design makes the structure of the fixed clamping plate 4 and the two translation plates 15 of the clamping mechanism 5 compact, and the chute 17 plays a guiding role in the translation of the two translation plates 15, improving the stability of the movement of the translation plates 15.

[0032] In this embodiment, limit members 18 are installed at both ends of the switching slide 43. The fixed seat 42 is located between the two limit members 18, and the limit members 18 are used to abut against the side wall of the fixed seat 42. The distance between the two limit members 18 is the translation stroke of the switching slide 43. During the reciprocating movement of the switching slide 43, the two limit members 18 play a limiting role, improving the position accuracy of the switching slide 43.

[0033] Specifically, the limit member 18 includes a side plate installed at the end of the switching slide 43 and a limit bolt that threadedly penetrates the side plate. Since the positions of the liquid injection ports of batteries of different specifications will deviate, by screwing the limit bolt, the limit bolt is screwed in or out to change the effective length of the limit of the limit bolt, thereby changing the size of the translation stroke of the switching slide 43.

[0034] In this embodiment, the side pressing and positioning mechanism 6 includes a telescopic driver 19, a swing plate 20 and a pressing plate 21. The telescopic driver 19 is arranged obliquely upward. One end of the telescopic driver 19 is hinged to the control box 2, and the other end of the telescopic driver 19 is hinged to the middle of the swing plate 20. The bottom end of the swing plate 20 is hinged to the control box 2. The pressing plate 21 is arranged at the top end of the swing plate 20, and the pressing plate 21 is movably arranged on the front side of the fixed clamping plate 4. Specifically, the telescopic driver 19 can adopt a cylinder.

[0035] In practical applications, when the telescopic end of the telescopic driver 19 extends, the telescopic driver 19 drives the swing plate 20 to swing outwards, and the swing plate 20 drives the pressing plate 21 to swing outwards together; when the telescopic end of the telescopic driver 19 retracts, the telescopic driver 19 drives the swing plate 20 to swing inwards, and the swing plate 20 drives the pressing plate 21 to swing inwards until the pressing plate 21 abuts against the battery in the placement hole 13 and realizes the positioning of the front and back positions of the battery.

[0036] Specifically, a cushion 41 is arranged at the pressing edge of the pressing plate 21, and the cushion 41 plays a role of buffering and protecting to avoid damaging the battery by pressing.

[0037] In this embodiment, the side pressing and positioning mechanism 6 further includes an elastic buffer assembly 22. The pressing plate 21 is convexly provided with a rotating ear, and the rotating ear is rotatably connected to the top end of the swing plate 20. One end of the elastic buffer assembly 22 is fixedly connected to the side wall of the swing plate 20, and the other end of the elastic buffer assembly 22 is connected to the middle of the pressing plate 21. During the process of the pressing plate 21 abutting against the battery, when the pressure of the pressing plate 21 is too large or there are tolerances in the specifications of the battery, the pressing plate 21 can rotate downward relative to the swing plate 20 and compress the elastic buffer assembly 22, so that the pressing plate 21 is in elastic contact with the battery, avoiding hard contact between the pressing plate 21 and the battery and damaging the battery; of course, the cushion 41 can also be replaced by a rotating roller, and the rotating roller is rotatably connected to the pressing edge of the pressing plate 21.

[0038] In this embodiment, the elastic buffer assembly 22 includes an adjusting bolt 23, a fixing block 24 and a spring 25. A through hole 26 is formed in the middle of the pressing plate 21. The stud of the adjusting bolt 23 passes through the through hole 26 and is threadedly connected to the fixing block 24. The fixing block 24 is installed on the side wall of the swing plate 20. The spring 25 is sleeved outside the stud of the adjusting bolt 23, and the two ends of the spring 25 are elastically abutted against the pressing plate 21 and the fixing block 24 respectively.

[0039] In practical applications, by screwing the adjusting bolt 23, the angle of the pressing plate 21 can be adjusted, so that the position where the pressing plate 21 abuts against the battery can be adjusted to meet the lateral positioning of batteries with different specifications; and when the pressing plate 21 is subjected to the downward extrusion force of the battery, the pressing plate 21 can rotate downward relative to the swing plate 20 and compress the spring 25, playing a certain role of buffer protection.

[0040] Specifically, the via hole 26 is a countersunk hole, and the nut of the adjusting bolt 23 is accommodated in the countersunk hole, with a compact structure and beautiful appearance, avoiding the exposure of the nut of the adjusting bolt 23.

[0041] In this embodiment, the airtight detection head 10 includes a suction cup 27, a connecting member 28, a sealing ring 29, and a locking plate 30. The lifting seat 8 is coaxially provided with an embedding hole 31, a through hole 32, and a mounting hole 33 from top to bottom. The bottom end of the connecting member 28 is communicatively provided with a straight pipe 34. The top of the suction cup 27 is inserted into the mounting hole 33. The connecting member 28 is embedded in the embedding hole 31. The straight pipe 34 passes through the through hole 32 and then is inserted into the central hole of the suction cup 27. The locking plate 30 is installed on the lifting seat 8 and is used to limit the connecting member 28 in the embedding hole 31. The sealing ring 29 is disposed between the locking plate 30 and the top end surface of the connecting member 28. The sealing ring 29 is arranged around the top port of the connecting member 28. The sealing ring 29 can seal the connection between the locking plate 30 and the connecting member 28. The locking plate 30 is provided with an insertion hole 35 communicating with the connecting member 28. One end of the air pipe is inserted into the insertion hole 35. The peripheral wall of the straight pipe 34 is in close contact with the inner wall of the central hole of the suction cup 27.

[0042] In practical applications, the lifting drive mechanism 9 drives the lifting seat 8 to drive the airtight detection head 10 to descend until the suction cup 27 descends to be in close contact with the top surface of the battery, and the suction holes of the suction cup 27 are hermetically communicated with the liquid injection ports of the battery. The airtight detection device 11 performs airtight detection on the battery via the air pipe, the connecting member 28, the straight pipe 34, and the suction cup 27. Among them, the straight pipe 34 can strengthen the strength of the suction cup 27, avoid the suction cup 27 from being bent by the extrusion force, and ensure the air path connection. In addition, the airtight detection head 10 designed with this structure realizes modular assembly, and is convenient for disassembly, installation, and maintenance.

[0043] In this embodiment, the airtight detection device 11 includes a frame 36 installed on the machine table 1 or / and the control box 2, a housing 37 installed on the frame 36, a plurality of vacuum gauges 38 embedded on the outer surface of the housing 37, and a plurality of vacuum valves 39 installed in the housing 37. The plurality of vacuum valves 39, the plurality of airtight detection heads 10, and the plurality of vacuum gauges 38 are arranged in one-to-one correspondence. One vacuum gauge 38 is communicated with an air pipe via one vacuum valve 39. The vacuum gauge 38 and the air pipe are in a normally open state via the vacuum valve 39. One vacuum valve 39 is communicated with an airtight detection head 10 via an air pipe. The frame 36 or the housing 37 is provided with a vacuum pumping device, and all the vacuum valves 39 are communicated with the vacuum pumping device; specifically, the vacuum gauge 38 is a digital display vacuum gauge.

[0044] In practical applications, the vacuum valve 39 is opened, and the vacuum pumping device evacuates the battery through the vacuum valve 39, the air pipe and the airtight detection head 10, so that the vacuum degree of the battery reaches a preset value. Then, the vacuum valve 39 is closed to cut off the connection between the vacuum pumping device and the vacuum valve 39. At this time, observe whether the vacuum degree value displayed by the vacuum gauge 38 changes. When the vacuum degree displayed by the vacuum gauge 38 decreases, it proves that the battery leaks air, that is, the airtightness of the battery is unqualified; when the vacuum degree displayed by the vacuum gauge 38 remains unchanged, it proves that the airtightness of the battery is qualified. One vacuum gauge 38 corresponds to one battery, and the airtightness of each battery can be independently detected.

[0045] In this embodiment, the airtight detection device 11 further includes a plurality of indicator lights 40 embedded on the outer surface of the outer cover 37, and the plurality of indicator lights 40 are respectively electrically connected to the plurality of vacuum gauges 38 in one-to-one correspondence. When the vacuum degree displayed by the vacuum gauge 38 decreases, the corresponding indicator light 40 lights up red, and when the vacuum degree displayed by the vacuum gauge 38 remains unchanged, the corresponding indicator light 40 lights up green; this structural design facilitates the operator to quickly identify which battery has qualified airtightness and which battery has unqualified airtightness.

[0046] All technical features in this embodiment can be freely combined according to actual needs.

[0047] The above embodiments are the preferred implementation solutions of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution of the present invention is within the protection scope of the present invention.

Claims

1. A battery airtight detection device, characterized in that: It includes a machine table (1), a control box (2) installed on the machine table (1), a fixed seat (42) installed on the control box (2), a switching slide seat (43) horizontally slidably connected to the fixed seat (42), a translation drive mechanism (3) installed on the control box (2) or / and the fixed seat (42) and drivingly connected to the switching slide seat (43), a fixed clamping plate (4) provided on the top surface of the switching slide seat (43), two sets of clamping mechanisms (5) oppositely installed on the fixed seat (42), a side pressure positioning mechanism (6) installed on the control box (2) and located on the front side of the fixed seat (42), a mounting plate (7) located on the rear side of the fixed seat (42), a lifting seat (8) vertically slidably connected to the mounting plate (7), a lifting drive mechanism (9) installed on the mounting plate (7) and used to drive the lifting of the lifting seat (8), a plurality of airtight detection heads (10) installed on the lifting seat (8), and an airtight detection device (11) installed on the machine table (1) or / and the control box (2). An airtight detection head (10) is communicated with the airtight detection device (11) through a trachea. The side pressure positioning mechanism (6) is correspondingly arranged with the plurality of airtight detection heads (10). The fixed clamping plate (4) is provided with two sets of battery placement structures (12) in the length direction. The two sets of clamping mechanisms (5) are respectively arranged in one-to-one correspondence with the two sets of battery placement structures (12). Each set of battery placement structures (12) includes a plurality of placement holes (13) recessed in the fixed clamping plate (4). The plurality of placement holes (13) are arranged along the length direction of the fixed clamping plate (4). The clamping mechanism (5) is used to clamp the battery in the placement hole (13) of the battery placement structure (12). The plurality of placement holes (13) of the battery placement structure (12) are respectively arranged in one-to-one correspondence with the plurality of airtight detection heads (10). As the switching slide seat (43) reciprocates, the two sets of battery placement structures (12) alternately move below the plurality of airtight detection heads (10).

2. The airtight detection device for a battery according to claim 1, characterized in that: The clamping mechanism (5) includes a clamping driver (14) installed on the switching slide seat (43) or / and the fixed clamping plate (4), and two translation plates (15) stacked vertically. The end parts of the two translation plates (15) are respectively fixedly connected to the two clamping ends of the clamping driver (14). The clamping driver (14) is used to drive the two translation plates (15) to reciprocate in opposite directions. The translation plate (15) is provided with a plurality of clamping blocks (16) in the length direction. The clamping blocks (16) of the two translation plates (15) are arranged at intervals on the same straight line. A clamping block (16) on one translation plate (15) cooperates with a clamping block (16) on the other translation plate (15) to clamp the battery in the placement hole (13).

3. The airtight detection device for a battery according to claim 2, characterized in that: The fixed clamping plate (4) is provided with a chute (17) penetrating through the plurality of placement holes (13). The two translation plates (15) of each set of clamping mechanisms (5) are stacked and slidably arranged in the chute (17), and the clamping blocks (16) can extend into the placement holes (13).

4. The airtight detection device for a battery according to claim 1, wherein: Limiters (18) are installed at both ends of the switching slide (43). The fixed seat (42) is located between the two limiters (18), and the limiter (18) is used to abut against the side wall of the fixed seat (42).

5. A battery airtight detection device according to claim 1, characterized in that: The side pressing and positioning mechanism (6) includes a telescopic driver (19), a swing plate (20) and a pressing plate (21). The telescopic driver (19) is inclined. One end of the telescopic driver (19) is hinged to the control box (2), and the other end of the telescopic driver (19) is hinged to the middle of the swing plate (20). The bottom end of the swing plate (20) is hinged to the control box (2). The pressing plate (21) is arranged at the top end of the swing plate (20), and the pressing plate (21) is movably arranged on the front side of the fixed clamp (4).

6. The airtight detection device for a battery according to claim 5, characterized in that: The side pressing and positioning mechanism (6) further includes an elastic buffer assembly (22). The pressing plate (21) is convexly provided with a rotating ear, and the rotating ear is rotatably connected to the top end of the swing plate (20). One end of the elastic buffer assembly (22) is fixedly connected to the side wall of the swing plate (20), and the other end of the elastic buffer assembly (22) is connected to the middle of the pressing plate (21).

7. The battery airtight detection device according to claim 6, characterized in that: The elastic buffer assembly (22) includes an adjusting bolt (23), a fixing block (24) and a spring (25). A through hole (26) is formed in the middle of the pressing plate (21). The stud of the adjusting bolt (23) passes through the through hole (26) and is threadedly connected to the fixing block (24). The fixing block (24) is installed on the side wall of the swing plate (20). The spring (25) is sleeved outside the stud of the adjusting bolt (23), and the two ends of the spring (25) are elastically abutted against the pressing plate (21) and the fixing block (24) respectively.

8. The airtight detection device for a battery according to claim 1, wherein: The airtight detection head (10) includes a suction cup (27), a connecting member (28), a sealing ring (29) and a locking plate (30). The lifting seat (8) is coaxially provided with an embedding hole (31), a through hole (32) and a mounting hole (33) from top to bottom. A straight pipe (34) is connected to the bottom end of the connecting member (28) in a communicating manner. The top of the suction cup (27) is inserted into the mounting hole (33). The connecting member (28) is embedded in the embedding hole (31). The straight pipe (34) passes through the through hole (32) and then inserts into the central hole of the suction cup (27). The locking plate (30) is installed on the lifting seat (8) and is used to limit the connecting member (28) in the embedding hole (31). The sealing ring (29) is arranged between the locking plate (30) and the top end surface of the connecting member (28). The sealing ring (29) surrounds the top port of the connecting member (28). The locking plate (30) is provided with an insertion hole (35) communicating with the connecting member (28). One end of the air pipe is inserted into the insertion hole (35). The peripheral wall of the straight pipe (34) is in close contact with the inner wall of the central hole of the suction cup (27).

9. The airtight detection device for a battery according to claim 1, characterized in that: The airtight detection device (11) includes a frame (36) installed on the machine table (1) or / and the control box (2), a housing (37) installed on the frame (36), a plurality of vacuum gauges (38) embedded in the outer surface of the housing (37), and a plurality of vacuum valves (39) installed in the housing (37). The plurality of vacuum valves (39), the plurality of airtight detection heads (10), and the plurality of vacuum gauges (38) are arranged in one-to-one correspondence. One vacuum gauge (38) is connected to a trachea through one vacuum valve (39), and one vacuum valve (39) is connected to an airtight detection head (10) through a trachea. All the vacuum valves (39) are connected to the vacuum pumping device.

10. A battery airtight detection device according to claim 9, characterized in that: The airtight detection device (11) further includes a plurality of indicator lights (40) embedded in the outer surface of the housing (37), and the plurality of indicator lights (40) are respectively electrically connected to the plurality of vacuum gauges (38) in one-to-one correspondence.

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