Battery pack air tightness automatic detection equipment

Abstract

The invention relates to the technical field of battery pack detection, and discloses battery pack air tightness automatic detection equipment which comprises a clamping and positioning assembly arranged on a feeding unit and a detection unit located on one side of the feeding unit, and the detection unit comprises a measuring part, an adjusting part, a driving part, a control terminal and an air tightness detector. The control terminal is connected with the clamping and positioning assembly, the measuring piece, the adjusting piece, the driving piece and the air tightness detector. And the control terminal calculates an adjustment parameter between the initial position and the target position of the detection joint based on a preset adjustment rule, and controls the adjustment part to adjust the initial position of the detection joint to the target position according to the adjustment parameter. According to the invention, adaptive calibration is carried out on the target position of the detection joint according to the current position of the inflation and deflation joint of the to-be-tested battery pack, so that accurate butt joint of the joint is ensured, the service life of the joint is remarkably prolonged, the sealing test speed and accuracy of the to-be-tested battery pack are remarkably improved, the test period of a single sample is shortened, and the misjudgment rate is reduced.

Description

Technical Field

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

[0002] With the development of new energy technologies, especially the rapid growth of the electric vehicle market and the energy storage market, higher requirements are placed on the safety and reliability of battery packs. Among them, the sealing of the plug box, as an important component of the battery pack, directly affects the protection ability and overall service life of the electronic components inside the battery pack. There are currently two methods for testing the air tightness of battery pack plug boxes on the market: one relies on manual inspection, which is not only inefficient, but also difficult to ensure accuracy. For example, if the docking action is not standard, it is easy to shorten the service life of the joint; the other is automatic detection. Although automatic detection is efficient, its air inlet and outlet positions are fixed, which leads to battery packs with deviated air inlets. It is easy to misalign when docking, resulting in broken joints, production line shutdown and other unnecessary losses. Summary of the invention

[0003] In view of this, an object of the present invention is to provide an automatic air tightness detection device for a battery pack to solve the technical problems mentioned in the prior art.

[0004] An automatic air tightness detection device for a battery pack, the device comprising a clamping and positioning assembly provided on a feeding unit, and a detection unit located on one side of the feeding unit, the detection unit comprising: A measuring piece, used for the feeding unit to convey the battery pack to be tested to a preset station and to obtain the current position of the charging and discharging connector of the battery pack to be tested after being clamped and fixed by the clamping and positioning assembly and upload it to the control terminal; An adjusting member is arranged at a side of the charging and discharging connector of the battery pack to be tested, and a detection connector is installed at the output end of the adjusting member. The control terminal calculates the adjustment parameters between the initial position and the target position of the detection connector based on a preset adjustment rule, and controls the adjusting member to adjust the initial position of the detection connector to the target position according to the adjustment parameters; the preset adjustment rule is: the target position of the detection connector is based on the current position of the charging and discharging connector of the battery pack to be tested as a reference, and the detection connector moves at the target position according to a preset motion trajectory and then cooperates with the charging and discharging connector of the battery pack to be tested; A driving member, the output end of which is equipped with the adjusting member, so that when the adjusting member adjusts the initial position of the detection connector to the target position, the control terminal controls the adjusting member to move according to a preset motion trajectory, so that the detection connector cooperates with the charging and discharging connector of the battery pack to be tested; The air tightness detector has an air inlet and an air outlet connected to the detection connector through pipelines, so as to perform air tightness detection on the battery pack to be tested when the detection connector cooperates with the charging and discharging connector of the battery pack to be tested, and control the air intake volume according to the preset control rules to simulate the air tightness detection environment of different working conditions; the preset control rules are: The air tightness detection environment of different working conditions is loaded according to the test requirements of the battery pack to be tested.

[0005] Optionally, the device further comprises a control box and a display; The control terminal is placed in the control box, a base is provided on the top of the control box, and the measuring component, the adjusting component and the driving component are respectively installed on the base; The display is mounted on the base, and has a display interface and a plurality of operating buttons, wherein the operating buttons are respectively connected to the control terminal and the air tightness detector, and are used to control the start and stop of the control terminal and the air tightness detector; The display interface is connected to the airtightness detector and is used to display the detection result of the airtightness detector.

[0006] Optionally, the adjusting member comprises: A horizontal moving unit, wherein the horizontal moving unit is installed at the output end of the driving member, and the detection connector is installed at the output end of the horizontal moving unit; A vertical moving unit is installed on the base, an output end of the vertical moving unit passes through the base and extends to a lifting platform disposed above the base, and the driving member is installed on the lifting platform.

[0007] Optionally, the horizontal moving unit comprises: A guide rail mounted at an output end of the driving member; The first telescopic member is installed on the guide rail, and the output direction of the first telescopic member is parallel to the conveying direction of the feeding unit, and the detection joint is installed at the output end of the first telescopic member.

[0008] Optionally, the first telescopic member includes: A first driving motor is mounted on the guide rail; A first screw rod, mounted at an output end of the first driving motor; A screw seat, sleeved on the outer circumference of the screw rod to fix the detection joint; A sliding block is slidably mounted on the outer periphery of the guide rail and connected to the lead screw seat.

[0009] Optionally, the vertical moving unit comprises: A second telescopic member is installed at the bottom of the base, and an output end of the second telescopic member passes through the top of the base and is connected to the lifting platform; A plurality of guide pillars, one end of each of which is connected to the bottom of the lifting platform, and the other end of which penetrates the base, and when the second telescopic member is output to the maximum movement stroke, the guide pillar and the base are in a matching relationship.

[0010] Optionally, the second telescopic member includes: A second driving motor is mounted on the bottom of the base; A second screw rod has one end mounted on the output end of the second drive motor and the other end sequentially passes through the base and the lifting platform. The second screw rod is rotatably connected to the base and is threadedly connected to the lifting platform.

[0011] Optionally, the measuring element is a charge coupled device, and the charge coupled device is mounted on the lifting platform through a bracket.

[0012] Optionally, the driving member is a cylinder, a hydraulic cylinder or an electric push rod; Preferably, the driving member is a cylinder, and the cylinder is equipped with a high-pressure air supply unit.

[0013] Optionally, the detection connector has a first connector and a second connector; The first connector is connected to the air outlet of the air tightness detector and cooperates with the charging connector of the battery pack to be tested; The second connector is connected to the air inlet end of the air tightness detector and cooperates with the air discharge connector of the battery pack to be tested; The first joint and the second joint are respectively equipped with one of the horizontal moving units and the driving member.

[0014] The beneficial effects that the present invention can produce include: The automatic air tightness detection equipment for battery packs provided by the present invention is designed with measuring parts and adjusting parts to adaptively calibrate the target position of the detection connector according to the current position of the charging and discharging connector of the battery pack to be tested, thereby ensuring that the detection connector is accurately connected with the charging and discharging connector of the battery pack to be tested. It can not only reduce labor intensity and save production costs, but also significantly improve the service life of the connector and the speed and accuracy of the sealing test of the battery pack (plug box) to be tested, so as to shorten the test cycle of a single sample and reduce the misjudgment rate; and the equipment is not only suitable for air tightness detection of battery packs to be tested of different standard models, but also suitable for battery packs to be tested of non-standard structures, and has wide applicability and strong compatibility. Compared with traditional sealing detection methods, the equipment of the present invention has the advantages of faster speed, higher accuracy and lower cost, and is very suitable for large-scale production and quality control applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a detection unit of an automatic battery pack air tightness detection device according to the present invention; Figure 2 For the present invention Figure 1 A top view of Figure 3 For the present invention Figure 2 A structural schematic diagram of a feeding unit is provided on one side; In the figure: 1. feeding unit, 2. clamping and positioning assembly, 3. measuring part, 4. driving part, 5. battery pack to be tested, 6. air tightness tester, 7. control box, 8. display, 9. base, 10. display interface, 11. operating button, 12. lifting platform, 13. guide rail, 14. first driving motor, 15. first screw rod, 16. screw seat, 17. slider, 18. guide column, 19. second driving motor, 20. second screw rod, 21. bracket, 22. first joint, 23. second joint, 24. inflation joint, 25. deflation joint, 26. positioning cylinder, 27. clamping block, 28. positioning mechanism, 29. travel limit switch. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1 and Figure 2As shown, the present invention provides an automatic air tightness detection device for a battery pack, the device includes a clamping and positioning component 2 arranged on a feeding unit 1, and a detection unit located on one side of the feeding unit 1, the detection unit includes a measuring part 3, an adjusting part, a driving part 4, a control terminal and an air tightness detector 6, wherein the control terminal is respectively connected to the clamping and positioning component 2, the measuring part 3, the adjusting part, the driving part 4 and the air tightness detector 6; the measuring part 3 is used for the feeding unit 1 to transport the battery pack 5 to be tested to a preset station and obtain the current position of the charging and discharging connector of the battery pack 5 to be tested after being clamped and fixed by the clamping and positioning component 2, and then upload it to the control terminal; the adjusting part is arranged on one side of the charging and discharging connector close to the battery pack 5 to be tested, and the output end of the adjusting part is equipped with a detection connector, the control terminal calculates the adjustment parameters between the initial position and the target position of the detection connector based on a preset adjustment rule, and controls the adjusting part to adjust the initial position of the detection connector to the target position according to the adjustment parameters; The preset adjustment rule is that the target position of the detection connector is based on the current position of the charging and discharging connector of the battery pack 5 to be tested, and the detection connector moves at the target position according to the preset motion trajectory and then cooperates with the charging and discharging connector of the battery pack 5 to be tested; an adjustment member is installed at the output end of the driving member 4, so that when the adjustment member adjusts the initial position of the detection connector to the target position, the control terminal controls the adjustment member to move according to the preset motion trajectory, so that the detection connector cooperates with the charging and discharging connector of the battery pack 5 to be tested; the air inlet and outlet ends of the air tightness tester 6 are respectively connected to the detection connector through pipelines, so that the air tightness test is performed on the battery pack 5 to be tested when the detection connector cooperates with the charging and discharging connector of the battery pack 5 to be tested, and the test range is 0-0.6MPa; and the air intake volume is controlled according to the preset control rule to simulate the air tightness test environment of different working conditions; the preset control rule is to load the air tightness test environment of different working conditions according to the test requirements of the battery pack 5 to be tested.

[0018] In this embodiment, when detecting the critical value of the battery pack 5 to be tested, the preset control rule is that the airtightness tester 6 adjusts the test pressure to the critical value of the battery pack 5 to be tested (such as 0.5MPa) and performs a voltage stabilization test within a preset time period to output the current test result, and judge whether the current test result is consistent with the critical value of the battery pack 5 to be tested; if they are consistent, the airtightness of the battery pack 5 to be tested is good; if they are inconsistent, the airtightness of the battery pack 5 to be tested is damaged; at this time, the tester can judge whether the difference between the current test result and the critical value of the battery pack 5 to be tested exceeds the preset detection threshold. Measure the detection status of the battery pack 5; if it exceeds the preset detection threshold, it means that the airtightness of the battery pack 5 to be tested is seriously damaged and needs to be reworked; if it does not exceed the preset detection threshold, it means that the airtightness of the battery pack 5 to be tested is generally damaged, which may be caused by pipeline leakage or damage to the detection connector and incomplete fit. At this time, check whether the detection status of two or more adjacent battery packs 5 to be tested are all generally damaged in airtightness. If so, it is necessary to check the pipeline and the detection connector; if not, it is necessary to rework the battery pack 5 to be tested, so as to eliminate equipment failure and reduce the rework rate.

[0019] In the above, the preset control rule is that the number of detection times and detection paths can be arbitrarily set when detecting the critical value of each battery pack 5 to be tested; such as one critical value detection, multiple interval critical value detection, and fluctuation detection within the preset test pressure range, etc.; wherein, multiple interval critical value detection is set to divide the current detection cycle into multiple continuous detection intervals, and the same test pressure or different test pressures are used in any two or more detection intervals to detect the air tightness of the battery pack 5 to be tested; the fluctuation detection within the preset test pressure range is set to perform cyclic reciprocating detection from small to large or from large to small according to the preset test pressure range within the current detection cycle. In this way, the air tightness detection environment under different working conditions is simulated to detect the corresponding critical value of the battery pack 5 to be tested, thereby improving the applicability of the equipment.

[0020] In the above, when the test is completed, the control terminal first controls the air tightness tester 6 to release the pressure of the test joint, then controls the driver 4 to reset so that the test joint is disengaged from the charging and discharging joint of the battery pack 5 to be tested, and finally controls the clamping and positioning assembly 2 to release the battery pack that has been tested, so that the feeding unit 1 can transport the next group of battery packs 5 to be tested to the preset station for the next batch of air tightness testing. In order to accurately realize the automatic loading and unloading of the battery pack 5 to be tested, the start and stop of the feeding unit 1 can be controlled by the control terminal.

[0021] In the above, by designing the measuring part 3 and the adjusting part, the target position of the detection joint is adaptively calibrated according to the current position of the charging and discharging joint of the battery pack 5 to be tested, so as to ensure the accurate docking of the detection joint with the charging and discharging joint of the battery pack 5 to be tested, which can not only reduce the labor intensity and save the production cost, but also significantly improve the service life of the joint and the speed and accuracy of the sealing test of the battery pack 5 (plug box) to be tested, so as to shorten the test cycle of a single sample and reduce the misjudgment rate; and the equipment is not only suitable for the gas sealing test of the battery pack 5 to be tested of different standard models, but also suitable for the battery pack 5 to be tested of non-standard structure, and has wide applicability and strong compatibility. Compared with the traditional sealing detection method, the equipment of the present invention has the advantages of faster speed, higher accuracy and lower cost, and is very suitable for large-scale production and quality control.

[0022] In this embodiment, the control terminal adopts a single chip microcomputer, and a pre-set PLC control program is embedded in the single chip microcomputer to control the coordinated actions among the clamping and positioning component 2, the measuring part 3, the adjusting part, the driving part 4 and the air tightness detector 6.

[0023] Furthermore, the device also includes a control box 7 and a display 8; the control terminal is placed in the control box 7 to achieve a protective effect; the top of the control box 7 has two opposite sides extending upward to form a U-shaped support portion with an opening facing upward to fix the base 9; the display 8, the measuring member 3, the adjusting member and the driving member 4 are respectively installed on the top of the base 9; the display 8 has a display interface 10 and a plurality of operating buttons 11, and the operating buttons 11 are respectively connected to the control terminal and the air tightness detector 6 to control the start and stop of the control terminal and the air tightness detector 6; the display interface 10 is connected to the air tightness detector 6 to display the test results of the air tightness detector 6. In the above, the display 8 has a built-in processing unit and a storage unit, and the processing unit outputs the test results to the display interface 10 and the storage unit according to a preset report format, and the storage unit is used to save the test results for subsequent viewing.

[0024] Further, the adjusting member includes a horizontal moving unit and a vertical moving unit, the horizontal moving unit is installed at the output end of the driving member 4, and the detection joint is installed at the output end of the horizontal moving unit; the vertical moving unit is installed on the base 9, the output end of the vertical moving unit passes through the base 9 and extends to the top of the base 9, where a lifting platform 12 is installed, and the driving member 4 is installed on the lifting platform 12. In the above, the horizontal moving unit includes a guide rail 13 and a first telescopic member, the guide rail 13 is installed at the output end of the driving member 4; the first telescopic member is installed on the guide rail 13, and the output direction of the first telescopic member is parallel to the conveying direction of the feeding unit 1, the detection joint is installed at the output end of the first telescopic member, and the detection joint is controlled to move in the horizontal direction by the first telescopic member to achieve lateral calibration of the detection joint. The vertical moving unit includes a second telescopic member and a plurality of guide columns 18. The second telescopic member is installed at the bottom of the base 9. The output end of the second telescopic member passes through the top of the base 9 and is connected to the lifting platform 12. One end of each guide column 18 is fixedly connected to the bottom of the lifting platform 12, and the other end passes through the base 9. When the second telescopic member outputs to the maximum movement stroke, the guide column 18 and the base 9 are in a matching relationship, so as to guide and limit the lifting platform 12 when the second telescopic member drives the lifting platform 12 to move, so as to control the detection joint to move in the vertical direction through the second telescopic member to realize the vertical calibration of the detection joint.

[0025] In this embodiment, the first telescopic member includes a first drive motor 14, a first screw rod 15, a screw seat 16 and a slider 17. The first drive motor 14 is mounted on the guide rail 13. One end of the first screw rod 15 is mounted on the output end of the first drive motor 14 through a coupling. The other end of the first screw rod 15 extends toward the conveying direction or the opposite direction of the feeding unit 1. The screw seat 16 is sleeved on the outer periphery of the screw rod to fix the detection joint. The slider 17 is slidably mounted on the outer periphery of the guide rail 13 and fixedly connected to the screw seat 16. Specifically, the first drive motor 14 drives the first screw rod 15 to rotate, thereby driving the screw seat 16 to drive the detection joint to move in the horizontal direction, and the screw seat 16 is guided and limited by the matching relationship between the slider 17 and the guide rail 13 to improve the calibration accuracy of the detection joint.

[0026] In this embodiment, the second telescopic member includes a second drive motor 19 and a second screw rod 20, the second drive motor 19 is fixedly mounted at the bottom of the base 9; one end of the second screw rod 20 is mounted at the output end of the second drive motor 19 through a coupling, and the other end sequentially passes through the base 9 and the lifting platform 12, the second screw rod 20 is rotatably connected to the base 9, and the second screw rod 20 is threadedly connected to the lifting platform 12. Specifically, the second drive motor 19 drives the second screw rod 20 to rotate, thereby driving the lifting platform 12 to move in the vertical direction, so as to achieve vertical calibration of the detection joint.

[0027] In the above, in order to improve control accuracy, the first drive motor 14 and the second drive motor 19 are servo motors. It should be noted that in other embodiments, the first telescopic member and the second telescopic member can also be replaced by a structure capable of reciprocating movement, such as a cylinder, a hydraulic cylinder or an electric telescopic rod.

[0028] Furthermore, the measuring part 3 is a charge coupled device (CCD), which is fixedly mounted on the lifting platform 12 through a bracket 21. In this embodiment, in order to ensure the stability and rationality of the structure, guide grooves are respectively provided on both sides of the bracket 21 to guide the installation of the guide rail 13. It is worth noting that CCD is a detection element that uses the amount of charge to represent the signal size and transmits the signal in a coupling manner. It has a series of advantages such as self-scanning, wide sensing spectrum range, small distortion, small size, light weight, low system noise, low power consumption, long life, and high reliability. The CCD can be trained according to the above-mentioned preset adjustment rules to generate a corresponding measurement system to accurately measure the current position of the charging and discharging connector of the battery pack 5 to be tested. Specifically, the measurement system has a photoelectric conversion array, a transfer gate, a charge shift register array, a detection circuit and a signal processing circuit, wherein the photoelectric conversion array is composed of a plurality of photoelectron clusters arranged to form a collection surface, and the collection surface covers one side of the charging and discharging connector of the battery pack 5 to be tested at a preset station to capture the battery pack 5 to be tested. The optical image of the charging and discharging joint of the battery pack 5 to be tested is captured; and the captured optical image is input into the transfer gate to generate electron-hole pairs, wherein the majority carriers are pushed away by the gate voltage of the transfer gate, while the minority carriers are collected in the potential well of the transfer gate to form signal charges to realize photoelectric conversion; and then the signal charges are injected into the charge shift register array for directional transmission, and the signal charges output by the charge shift register array are collected by the detection circuit, and the collected signal charges are input into the signal processing circuit at the same time, and the signal processing circuit marks the corresponding position information of each transmission channel according to the architecture of the charge shift register array, and generates the current position of the charging and discharging joint of the battery pack 5 to be tested according to the position information of the transmission channel corresponding to the received signal charge. Among them, the architecture of the charge shift register array is based on the arrangement of the photoelectron clusters, and has a transmission channel corresponding to each photoelectron cluster.

[0029] In the above, the driving member 4 is a cylinder, a hydraulic cylinder or an electric push rod; preferably, the driving member 4 is a cylinder, and the cylinder is equipped with a high-pressure air supply unit, which is connected to the control terminal to control the output stroke of the driving member 4 through the control terminal.

[0030] Furthermore, in order to improve the docking accuracy between the detection connector and the battery pack 5 to be tested, the detection connector is designed as a first connector 22 and a second connector 23; the first connector 22 is connected to the air outlet end of the air tightness tester 6, and cooperates with the inflation connector 24 of the battery pack 5 to be tested; the second connector 23 is connected to the air inlet end of the air tightness tester 6, and cooperates with the deflation connector 25 of the battery pack 5 to be tested; the first connector 22 and the second connector 23 are respectively configured with a horizontal moving unit and a driving member 4 to realize independent calibration of the two connectors in the horizontal direction. The specific calibration method refers to the above-mentioned lateral calibration method.

[0031] In the above, if Figure 3 As shown, the clamping and positioning assembly 2 includes at least two groups of clamping members and one group of positioning members, the two groups of clamping members are relatively arranged on the opposite sides of the preset station of the feeding unit 1, and the positioning member is arranged on the side of the discharge end of the preset station of the feeding unit 1, so that when the battery pack 5 to be tested is transported to the preset station, it is blocked and limited by the positioning member, and is clamped and fixed by the two groups of clamping members; in this embodiment, four groups of clamping members are arranged, and the four groups of clamping members are respectively arranged at the four corners of the preset station, wherein the clamping members include a positioning cylinder 26 and a clamping member installed at the output end of the positioning cylinder 26 Block 27, the clamping block 27 is an L-shaped structure, which forms a rectangular frame at the four corners of the preset station to achieve precise clamping of the battery pack 5 to be tested; the positioning part includes a positioning mechanism 28 and a travel limit switch 29, and the positioning mechanism 28 and the travel limit switch 29 are respectively arranged at the discharge end of the preset station, so that when the travel limit switch 29 detects that the battery pack 5 to be tested has arrived at the preset station, the battery pack 5 to be tested is pushed upward by the positioning mechanism 28 to block and limit the position. After the detection is completed, the positioning mechanism 28 retreats downward to release the battery pack that has completed the detection.

Claims

1. An automatic air tightness detection device for a battery pack, the device comprising a clamping and positioning assembly (2) arranged on a feeding unit (1), and a detection unit located on one side of the feeding unit (1), characterized in that: The detection unit comprises: A measuring component (3) is used for the feeding unit (1) to convey the battery pack (5) to be tested to a preset workstation and to obtain the current position of the charging and discharging connector of the battery pack (5) to be tested after being clamped and fixed by the clamping and positioning component (2) and to upload it to the control terminal; An adjusting member is arranged on a side close to the charging and discharging connector of the battery pack (5) to be tested, and a detection connector is installed at the output end of the adjusting member. The control terminal calculates an adjustment parameter between an initial position and a target position of the detection connector based on a preset adjustment rule, and controls the adjusting member to adjust the initial position of the detection connector to the target position according to the adjustment parameter; the preset adjustment rule is: the target position of the detection connector is based on the current position of the charging and discharging connector of the battery pack (5) to be tested, and the detection connector moves at the target position according to a preset motion trajectory and then cooperates with the charging and discharging connector of the battery pack (5) to be tested; A driving member (4) having the adjusting member installed at its output end, so that when the adjusting member adjusts the initial position of the detection connector to the target position, the control terminal controls the adjusting member to move according to a preset motion trajectory, so that the detection connector cooperates with the charging and discharging connector of the battery pack (5) to be tested; The air tightness detector (6) has an air inlet end and an air outlet end connected to the detection connector via pipelines, respectively, so as to perform air tightness detection on the battery pack (5) to be tested when the detection connector cooperates with the charging and discharging connector of the battery pack (5) to be tested, and to control the air intake volume according to a preset control rule to simulate an air tightness detection environment under different working conditions; the preset control rule is: The airtightness detection environment of different working conditions is loaded according to the test requirements of the battery pack (5) to be tested.

2. The battery pack air tightness automatic detection device according to claim 1, characterized in that: The device also includes a control box (7) and a display (8); The control terminal is placed in the control box (7); a base (9) is provided on the top of the control box (7); and the measuring component (3), the adjusting component and the driving component (4) are respectively mounted on the base (9); The display (8) is mounted on the base (9), and the display (8) has a display interface (10) and a plurality of operating buttons (11), wherein the operating buttons (11) are respectively connected to the control terminal and the air tightness detector (6) and are used to control the start and stop of the control terminal and the air tightness detector (6); The display interface (10) is connected to the air tightness detector (6) and is used to display the detection result of the air tightness detector (6).

3. The automatic air tightness detection device for battery pack according to claim 2, characterized in that: The adjusting member comprises: A horizontal moving unit, the horizontal moving unit being mounted at the output end of the driving member (4), and the detection connector being mounted at the output end of the horizontal moving unit; A vertical moving unit, the vertical moving unit is mounted on the base (9), the output end of the vertical moving unit passes through the base (9) and extends to a lifting platform (12) disposed above the base (9), and the driving member (4) is mounted on the lifting platform (12).

4. The automatic air tightness detection device for battery pack according to claim 3, characterized in that: The horizontal moving unit comprises: A guide rail (13) mounted on the output end of the driving member (4); The first telescopic member is mounted on the guide rail (13), and the output direction of the first telescopic member is parallel to the conveying direction of the feeding unit (1), and the detection joint is mounted at the output end of the first telescopic member.

5. The automatic battery pack air tightness detection device according to claim 4, characterized in that: The first telescopic member comprises: A first driving motor (14) mounted on the guide rail (13); A first screw rod (15) mounted on an output end of the first drive motor (14); A screw seat (16) is sleeved on the outer circumference of the screw to fix the detection joint; A slider (17) is slidably mounted on the outer periphery of the guide rail (13) and is connected to the screw seat (16).

6. The automatic air tightness detection device for battery pack according to claim 3, characterized in that: The vertical moving unit comprises: A second telescopic member is mounted on the bottom of the base (9), and an output end of the second telescopic member passes through the top of the base (9) and is connected to the lifting platform (12); A plurality of guide pillars (17), one end of each guide pillar (17) being connected to the bottom of the lifting platform (12), and the other end of each guide pillar (17) being arranged to penetrate the base (9), and when the second telescopic member is output to a maximum movement stroke, the guide pillar (17) and the base (9) are in a matching relationship.

7. The automatic battery pack air tightness detection device according to claim 6, characterized in that: The second telescopic member comprises: A second driving motor (19) is mounted on the bottom of the base (9); A second screw rod (20) has one end mounted on the output end of the second drive motor (19), and the other end passes through the base (9) and the lifting platform (12) in sequence, the second screw rod (20) being rotationally connected to the base (9), and the second screw rod (20) being threadedly connected to the lifting platform (12).

8. The automatic battery pack air tightness detection device according to claim 3, characterized in that: The measuring element (3) is a charge coupled device, and the charge coupled device is mounted on the lifting platform (12) via a bracket (21).

9. The automatic battery pack air tightness detection device according to claim 1, characterized in that: The driving member (4) is a cylinder, a hydraulic cylinder or an electric push rod; Preferably, the driving member (4) is a cylinder, and the cylinder is equipped with a high-pressure air supply unit.

10. The automatic battery pack air tightness detection device according to claim 3, characterized in that: The detection joint comprises a first joint (22) and a second joint (23); The first connector (22) is connected to the air outlet of the air tightness detector (6) and cooperates with the air charging connector (24) of the battery pack (5) to be tested; The second connector (23) is connected to the air inlet end of the air tightness detector (6) and cooperates with the air discharge connector (25) of the battery pack (5) to be tested; The first joint (22) and the second joint (23) are respectively provided with a horizontal moving unit and a driving member (4).

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