Rapid detection equipment for air tightness of automobile power lithium battery pack

Abstract

The invention discloses an automobile power lithium battery pack airtightness rapid detection device, and relates to the field of detection equipment, the automobile power lithium battery pack airtightness rapid detection device comprises a glass box and a battery assembly, two sides of an inner cavity of the glass box are fixedly provided with separator plates, a lifting frame is arranged between the two separator plates, and two sides of the bottom end of the lifting frame are fixedly provided with rectangular plates; and a control assembly for detecting the control battery assembly is arranged between the rectangular plates. According to the automobile power lithium battery pack airtightness rapid detection equipment, the spline rod, the sleeve rod, the rectangular rod, the clamping plate and the battery assembly are driven to rotate intermittently, the battery assembly can be located at different angles and positions in detection liquid, compared with static detection, all parts of the battery assembly can be detected more comprehensively, and the detection efficiency is improved. The problem that the airtightness problem of some parts cannot be found due to the angle problem is avoided; the intermittent rotation enables the detection liquid to be more fully contacted with the surface of the battery assembly, and the condition of the battery assembly in the detection liquid can be dynamically observed in the rotation process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of detection equipment, in particular to a kind of automobile power lithium battery pack air tightness rapid detection equipment. BACKGROUND

[0002] Automobile power lithium battery pack as the core component of new energy vehicle, its performance and safety are directly related to the running condition of whole vehicle and the life safety of passenger, air tightness is one of the key indicators to measure the quality of automobile power lithium battery pack, good air tightness can effectively prevent battery pack internal electrolyte leakage, external moisture and impurities invasion, avoid the safety accident caused by short circuit, corrosion and other problems, guarantee the stable operation and long service life of battery pack, therefore, it is crucial to quickly and accurately detect the air tightness of automobile power lithium battery pack, which also promotes the continuous development of automobile power lithium battery pack air tightness rapid detection equipment.

[0003] At present, there are some automobile power lithium battery pack air tightness rapid detection equipment on the market, which meets the basic detection needs of the industry to some extent, and the common detection methods mainly include static immersion detection and single direction clamping detection:

[0004] In the static immersion detection method, the automobile power lithium battery pack is completely immersed in the detection liquid, and whether bubbles are generated on the surface of the battery pack is observed to judge its air tightness, which is relatively simple to operate, and the equipment cost is low, which can detect the obvious air tightness problem of the battery pack to some extent;

[0005] Single direction clamping detection can only detect the battery pack from a fixed direction, so that part of the area cannot be effectively contacted with the detection liquid, and the air tightness of the battery pack cannot be detected in all directions, resulting in a certain deviation between the detection result and the actual situation, and reducing the accuracy of detection. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides an automobile power lithium battery pack air tightness rapid detection equipment to solve the technical problems mentioned in the background art.

[0007] To achieve the above purpose, the present application is realized by the following technical scheme: an automobile power lithium battery pack air tightness rapid detection equipment, comprising a glass box and a battery assembly, the glass box inner cavity is fixedly installed with a baffle on both sides, a lifting frame is arranged between the two baffles, a rectangular plate is fixedly installed on the bottom end of the lifting frame on both sides, and a control assembly for detecting the battery assembly is arranged between the rectangular plates;

[0008] The control assembly comprises a fixed box fixedly installed on the inner side of the rectangular plate, a mounting plate rotatably connected to the inner side of the fixed box, a circular ring fixedly installed on the mounting plate, an adjusting piece provided on one side of the mounting plate for driving the intermittent rotation of the circular ring, a spline shaft fixedly installed on one side of the mounting plate, a sleeve rod slidably connected to the outer wall of the spline shaft, a second damping spring provided between the sleeve rod and the mounting plate and sleeved on the spline shaft, a rectangular rod fixedly connected to the outer wall of the sleeve rod, and clamping plates provided at the other ends of the front and rear clamping plates and the upper and lower clamping plates for clamping the battery assembly.

[0009] As a further preferred embodiment of the present technical solution, a servo motor is fixedly installed in the inner cavity of the sleeve rod, a drive rod is fixedly installed at the output end of the servo motor, a half gear is fixedly installed at the other end of the drive rod, the teeth of the half gear are provided in two groups and symmetrically arranged, a reciprocating screw rod is rotatably connected to the periphery of the sleeve rod and rotatably installed on the rectangular rod, a full gear is fixedly connected to one side of the reciprocating screw rod and engaged with the half gear, the other side of the reciprocating screw rod is threadedly connected with the clamping plate, and the clamping plate is slidably installed on the rectangular rod.

[0010] As a further preferred embodiment of the present technical solution, the inner side of the circular ring is circumferentially provided with an inner tooth groove, and the outer side of the circular ring is circumferentially provided with an outer tooth groove.

[0011] As a further preferred embodiment of the present technical solution, the adjusting piece comprises a rotating plate rotatably installed on the rectangular plate, a rotating plate fixedly connected to the top of the rotating plate, and auxiliary rods and push rods rotatably connected to the upper and lower ends of the side wall of the rotating plate, wherein the side walls of the auxiliary rods and the push rods are provided with tension springs, the positions of the push rods and the inner tooth groove correspond to each other, and the positions of the auxiliary rods and the outer tooth groove correspond to each other.

[0012] As a further preferred embodiment of the present technical solution, the adjusting piece further comprises an adjusting motor fixedly installed on the partition plate, a transmission rod fixedly connected to the output end of the adjusting motor, cams fixedly connected to the outer wall of the transmission rod on both sides, a fixed plate fixedly installed on one side of the cam and provided with a moving rod slidably connected to the fixed plate, the side wall of the cam slidably fitted with one end of the moving rod, a connecting rod fixedly connected to the other end of the moving rod, an adjusting rod fixedly connected to one end of the connecting rod and movably fitted with the sleeve frame, slide rods fixedly installed on the inner wall of the fixed plate, and a first damping spring sleeved on the outer wall of the slide rod and used for pushing the moving rod to move to one side of the cam.

[0013] As a further preferred embodiment of the present technical solution, a sliding block is slidably connected to the outer end of the rectangular plate in the vertical direction, a sliding rod is fixedly connected to the outer wall of the sliding block, the outer side end of the sliding rod is provided with a moving wheel, a limiting block is fixedly connected to the outer wall of the sliding rod, and a third damping spring is provided between the limiting block and the partition plate and sleeved on the sliding rod.

[0014] As a further preferred, the glass box is fixedly installed with mounting racks on both sides of the inner wall, rotating rods are rotatably installed on the mounting racks, and the two rotating rods are in transmission connection through synchronous belt pulley transmission members and penetrate through the glass box, one end of one of the rotating rods is provided with a driving motor fixedly installed on the glass box, eccentric wheels are fixedly connected to the outer walls of the rotating rods, and the side walls of the eccentric wheels slide in contact with the moving wheels.

[0015] Compared with the prior art, the following beneficial effects are achieved:

[0016] By intermittently rotating the spline rod, the sleeve rod, the rectangular rod, the clamping plate and the battery assembly, the battery assembly can be at different angles and positions in the detection liquid, compared with static detection, each part of the battery assembly can be more comprehensively detected, and the problem that the airtightness of some parts cannot be found due to angle problems can be avoided; intermittent rotation enables the detection liquid to more fully contact the surface of the battery assembly, and the condition of the battery assembly in the detection liquid can be dynamically observed during rotation, such as whether bubbles continue to emerge, etc., which can more accurately determine whether the battery assembly has airtightness problems such as air leakage; the stable transmission of the spline rod, the sleeve rod, the rectangular rod and the clamping plate ensures the smoothness of the rotation process, further improving the detection accuracy; the battery assembly may be subjected to forces in various directions and be in different postures during actual use, and the intermittent rotation detection method simulates the complex working conditions of the battery assembly during actual use to a certain extent, which can more truly reflect the airtightness of the battery assembly and ensure its reliability in actual application, thereby enabling the battery assembly to be subjected to airtightness detection.

[0017] The upper and lower full gears and the upper and lower reciprocating lead screws are driven to rotate by the half gear, and then the upper and lower clamping plates and the left and right clamping plates alternately clamp the battery assembly. Since the contact surfaces of the upper and lower clamping plates, the left and right clamping plates and the battery assembly are different, the detection liquid can fully contact each position of the battery assembly during the alternate clamping process, avoiding the problem that some areas are blocked and cannot be detected due to single clamping mode, and realizing the full-range airtightness detection of the battery assembly. Through this alternate clamping mode, the battery assembly is detected from different directions and angles, which can more comprehensively find the possible airtightness defects of the battery assembly, greatly improve the reliability of the detection result compared with single direction or fixed clamping mode, reduce the probability of missed detection, and ensure that the quality of the battery assembly meets the requirements. The cooperation of the upper and lower full gears and the upper and lower reciprocating lead screws enables the alternate action of the clamping plates to be orderly and stable. This mechanical operation mode simplifies the detection process, reduces manual intervention, improves the detection efficiency, and ensures the accuracy and consistency of each clamping and detection. For the battery assembly with a complex shape, a single clamping mode may not be able to expose all parts well, and the alternate clamping of the upper and lower and left and right clamping plates can better adapt to battery assemblies of different shapes, ensuring that the detection liquid can effectively contact each surface of the assembly and improving the versatility of the detection device for battery assemblies of different specifications and shapes.

[0018] The battery assembly is moved reciprocally in the battery liquid by the control assembly. This reciprocating movement enables the battery assembly to change position and posture in the battery liquid constantly, allowing the battery liquid to contact each part of the battery assembly more fully. Compared with static soaking, more positions of the battery assembly can be detected for airtightness, greatly enhancing the comprehensiveness of the detection. During the reciprocating movement, the flow state of the battery liquid around the battery assembly changes constantly, which can more realistically simulate various liquid impacts and penetration situations that the battery assembly may face in the actual use environment. Through this dynamic detection method, whether the battery assembly has a slight leakage risk or airtightness problem can be more accurately found, and the accuracy of the detection result can be significantly improved compared with static detection. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the structure of the glass box in the present application;

[0021] Figure 3 It is a schematic diagram of the structure of the control assembly and the battery assembly in the present application;

[0022] Figure 4 It is a schematic diagram of the structure of the adjusting member in the present application;

[0023] Figure 5 is Figure 4 enlarged view of A in the middle;

[0024] Figure 6 is a structural schematic view of the spline rod, sleeve rod, rectangular rod, clamping plate in the application;

[0025] Figure 7 is a structural schematic view of the circular ring, rotating plate, push rod, auxiliary rod in the application;

[0026] Figure 8 is Figure 6 enlarged view of B in the middle.

[0027] In the figure: 1, glass box; 2, partition; 3, lifting frame; 4, rectangular plate; 5, battery assembly; 6, control assembly; 21, adjusting motor; 22, transmission rod; 23, cam; 24, fixed plate; 25, moving rod; 26, sliding rod; 27, first damping spring; 28, connecting rod; 29, adjusting rod; 61, fixed box; 62, mounting plate; 63, circular ring; 64, spline rod; 65, sleeve rod; 66, second damping spring; 67, rectangular rod; 68, clamping plate; 69, servo motor; 610, drive rod; 611, half gear; 612, reciprocating screw rod; 613, full gear; 614, inner tooth groove; 615, outer tooth groove; 616, rotating plate; 617, sleeve frame; 618, push rod; 619, auxiliary rod; 620, tension spring; 621, sliding block; 622, sliding rod; 623, limit block; 624, third damping spring; 625, moving wheel; 626, mounting frame; 627, rotating rod; 628, eccentric wheel; 629, synchronous pulley transmission member; 630, drive motor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the description. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0029] Embodiment one: combined with Figures 1-8As shown, the present application provides a technical scheme: a kind of automobile power lithium battery pack air tightness rapid detection equipment, including glass box 1 and battery component 5, glass box 1 inner cavity both sides are fixedly installed with baffle 2, two baffle 2 and glass box 1 form detection area between, detection liquid is poured into detection area, for subsequent sealed detection processing of battery component 5, lifting frame 3 is provided between two baffle 2, lifting frame 3 top is provided with lifting rope, by external equipment cooperation lifting rope control lifting frame 3, rectangular plate 4, control component 6 and battery component 5 are lifted and handled, to be used for battery component 5 is placed in glass box 1 and carries out air tightness detection processing, lifting frame 3 bottom end both sides are fixedly installed with rectangular plate 4, control component 6 for detecting battery component 5 is provided between rectangular plate 4;

[0030] Control component 6 includes fixedly installed in the fixed box 61 of rectangular plate 4, the inner side of fixed box 61 is rotatably connected with mounting plate 62, mounting plate 62 is fixedly installed with circular ring 63, mounting plate 62 one side is provided with the adjusting part for driving circular ring 63 intermittent rotation, mounting plate 62 one side is fixedly installed with spline rod 64, spline rod 64 outer wall is transversely slidably connected with sleeve rod 65, sleeve rod 65 and mounting plate 62 between the second damping spring 66 is provided on spline rod 64, under the elastic force of second damping spring 66, it can promote sleeve rod 65 to move to inner side, to facilitate subsequent clamping plate 68 clamping and fixing battery component 5, sleeve rod 65 outer wall is fixedly connected with rectangular rod 67, rectangular rod 67 other end is provided with the clamping plate 68 for clamping battery component 5, and the front and rear clamping plate 68 and the upper and lower clamping plate 68 are staggered, when the front and rear clamping plate 68 move to inner side and clamping battery component 5, the upper and lower clamping plate 68 move to outer side and do not clamping battery component 5, when the air tightness of battery component 5 is detected, battery component 5 is placed in detection liquid, circular ring 63 is driven by adjusting part, mounting plate 62 is intermittently rotated on fixed box 61, so that mounting plate 62 drives spline rod 64, sleeve rod 65, rectangular rod 67, clamping plate 68 and battery component 5 are intermittently rotated, then observe the condition of battery component 5 in detection liquid, circular ring 63 is driven by adjusting part, battery component 5 is intermittently rotated on fixed box 61 by mounting plate 62, so that battery component 5 can be air tightness detection processing;

[0031] The inner cavity of the sleeve rod 65 is fixedly provided with a servo motor 69, the output end of the servo motor 69 is fixedly provided with a driving rod 610, one end of the driving rod 610 is fixedly provided with a half gear 611, the teeth of the half gear 611 are provided with two groups, and the two groups of teeth are symmetrically arranged, the periphery of the sleeve rod 65 is rotatably connected with a reciprocating screw rod 612, and the reciprocating screw rod 612 is rotatably arranged on the rectangular rod 67, one side of the reciprocating screw rod 612 is fixedly connected with a full gear 613 engaged with the half gear 611, the other side of the reciprocating screw rod 612 is threadedly connected with the clamping plate 68, and the clamping plate 68 is transversely slidably arranged on the rectangular rod 67, when it is necessary to clamp the battery assembly 5, the servo motor 69 is started to drive the driving rod 610 and the half gear 611 to synchronously rotate, when the teeth of the half gear 611 are engaged with the upper and lower full gears 613, the teeth of the half gear 611 are not engaged with the left and right full gears 613, at this time, the upper and lower full gears 613 can drive the upper and lower reciprocating screw rods 612 to synchronously rotate, so that the reciprocating screw rod 612 drives the clamping plate 68 connected with it by threads to move inward, so that the upper and lower clamping plates 68 clamp the battery assembly 5, and the left and right clamping plates 68 do not clamp the battery assembly 5;

[0032] When the half gear 611 rotates to engage with the left and right full gears 613, the half gear 611 is no longer engaged with the upper and lower full gears 613, at this time, the left and right full gears 613 can drive the left and right reciprocating screw rods 612 to synchronously rotate, so that the reciprocating screw rod 612 drives the clamping plate 68 connected with it by threads to move inward, so that the left and right clamping plates 68 clamp the battery assembly 5;

[0033] With the continuous rotation of the half gear 611 to drive the upper and lower full gears 613 to rotate, at this time, the upper and lower full gears 613 can drive the upper and lower reciprocating screw rods 612 to synchronously rotate, so that the reciprocating screw rod 612 drives the clamping plate 68 connected with it by threads to move outward, at this time, the battery assembly 5 is in a state of being clamped and fixed by the left and right clamping plates 68;

[0034] Therefore, it can be understood that when the upper and lower clamping plates 68 clamp and fix the battery assembly 5, the left and right clamping plates 68 no longer clamp the battery assembly 5, and when the left and right clamping plates 68 clamp and fix the battery assembly 5, the upper and lower clamping plates 68 no longer clamp the battery assembly 5, the contact surfaces of the upper and lower clamping plates 68, the left and right clamping plates 68 and the battery assembly 5 are different, so that the detection liquid can contact each position of the battery assembly 5, thereby enabling detection and processing of each position of the battery assembly 5;

[0035] The inner side of the circular ring 63 is provided with an inner tooth groove 614 in a circumferential array, and the outer side of the circular ring 63 is provided with an outer tooth groove 615 in a circumferential array; the adjusting part comprises a rotating plate 616 rotatably installed on the rectangular plate 4, the rotating plate 616 is rotatably installed on the rectangular plate 4 at a middle position of the rotating plate 616 through a rotating shaft, and the auxiliary rod 619 and the push rod 618 are located at the upper and lower ends of the rotating shaft respectively, the rotating plate 616 is fixedly connected to the rotating plate 616 at the top of the rotating plate 616, the auxiliary rod 619 and the push rod 618 are rotatably connected to the side wall of the rotating plate 616 at the upper and lower ends, the side wall of the auxiliary rod 619 and the push rod 618 is provided with a tension spring 620, the position of the push rod 618 corresponds to the position of the inner tooth groove 614, and the position of the auxiliary rod 619 corresponds to the position of the outer tooth groove 615, under the elastic force of the tension spring 620, the push rod 618 moves to one side of the inner tooth groove 614, and the auxiliary rod 619 moves to one side of the outer tooth groove 615; the adjusting part further comprises an adjusting motor 21 fixedly installed on the partition plate 2, the output end of the adjusting motor 21 is fixedly connected with a transmission rod 22, the outer wall of the transmission rod 22 is fixedly connected with a cam 23 on both sides, one side of the cam 23 is provided with a fixed plate 24 fixedly installed on the partition plate 2, a moving rod 25 is transversely and slidably connected to the fixed plate 24, one end of the moving rod 25 is slidably matched with the side wall of the cam 23, the other end of the moving rod 25 is fixedly connected with a connecting rod 28, one end of the connecting rod 28 is fixedly connected with an adjusting rod 29, and the adjusting rod 29 is movably matched with the sleeve frame 617, the inner wall of the fixed plate 24 is fixedly installed with a slide rod 26 on both sides, the outer wall of the slide rod 26 is sleeved with a first damping spring 27 for pushing the moving rod 25 to move to one side of the cam 23, by starting the adjusting motor 21 to drive the transmission rod 22 to rotate synchronously, the transmission rod 22 drives the cam 23 to rotate synchronously, and the cam 23 cooperates with the elastic force of the first damping spring 27 when rotating to push the moving rod 25, the connecting rod 28 and the adjusting rod 29 to reciprocate, so that the adjusting rod 29 drives the sleeve frame 617 and the rotating plate 616 to reciprocate on the rectangular plate 4, when the rotating plate 616 rotates clockwise, the rotating plate 616 drives the push rod 618 and the auxiliary rod 619 to move, so that the end of the push rod 618 is located in the inner tooth groove 614 and pushes the circular ring 63 to rotate counterclockwise, at the same time, the end of the auxiliary rod 619 is located in the outer tooth groove 615 and moves, when the rotating plate 616 rotates counterclockwise, the rotating plate 616 drives the push rod 618 and the auxiliary rod 619 to move, so that the end of the auxiliary rod 619 is located in the outer tooth groove 615 and pushes the circular ring 63 to rotate counterclockwise, at the same time, the end of the push rod 618 is located in the outer inner tooth groove 614 and moves, and the reciprocation can drive the full gear 613 to rotate intermittently, so that the full gear 613 drives the spline rod 64, the sleeve rod 65, the rectangular rod 67, the clamping plate 68 and the battery assembly 5 to rotate intermittently, so that the air tightness of the battery assembly 5 can be detected and processed.

[0036] In the embodiment of the present application, by starting the adjusting motor 21 to drive the transmission rod 22 to rotate synchronously, the transmission rod 22 drives the cam 23 to rotate synchronously, and the cam 23 cooperates with the elastic force of the first damping spring 27 to push the moving rod 25, the connecting rod 28 and the adjusting rod 29 to reciprocate, so that the adjusting rod 29 drives the sleeve frame 617 and the rotating plate 616 to reciprocate on the rectangular plate 4. When the rotating plate 616 rotates clockwise, the rotating plate 616 drives the pushing rod 618 and the auxiliary rod 619 to move, so that the end of the pushing rod 618 is located in the inner tooth groove 614 and pushes the circular ring 63 to rotate counterclockwise, and the end of the auxiliary rod 619 is located in the outer tooth groove 615 and moves. When the rotating plate 616 rotates counterclockwise, the rotating plate 616 drives the pushing rod 618 and the auxiliary rod 619 to move, so that the end of the auxiliary rod 619 is located in the outer tooth groove 615 and pushes the circular ring 63 to rotate counterclockwise, and the end of the pushing rod 618 is located in the outer tooth groove 614 and moves. The reciprocating movement can drive the full gear 613 to rotate intermittently, so that the full gear 613 drives the spline rod 64, the sleeve rod 65, the rectangular rod 67, the clamping plate 68 and the battery assembly 5 to rotate intermittently. Compared with static detection, the battery assembly 5 can be detected more comprehensively at different angles and positions in the detection liquid, and the angle problem can be avoided. The airtightness problem of some parts cannot be found. Intermittent rotation enables the detection liquid to fully contact the surface of the battery assembly 5, and enables the dynamic observation of the battery assembly 5 in the detection liquid during rotation, such as whether there is continuous bubble emission, etc., which can more accurately judge whether the battery assembly 5 has air leakage and other airtightness problems. The stable transmission of the spline rod 64, the sleeve rod 65, the rectangular rod 67 and the clamping plate 68 ensures the stability of the rotating process, and further improves the detection accuracy. The battery assembly 5 may be subjected to forces in various directions and in different postures during actual use. The intermittent rotation detection mode simulates the complex working conditions of the battery assembly 5 during actual use to a certain extent, and can more truly reflect the airtightness of the battery assembly 5, thereby ensuring the reliability of the battery assembly 5 in actual application, so as to detect and process the airtightness of the battery assembly 5.

[0037] When the battery assembly 5 needs to be clamped, the servo motor 69 is started to drive the driving rod 610 and the half gear 611 to rotate synchronously. When the teeth of the half gear 611 engage with the upper and lower full gears 613, the teeth of the half gear 611 do not engage with the left and right full gears 613. At this time, the upper and lower full gears 613 can drive the upper and lower reciprocating lead screws 612 to rotate synchronously, so that the reciprocating lead screws 612 drive the clamping plates 68 connected by threads to move inward, so that the upper and lower clamping plates 68 clamp the battery assembly 5, and the left and right clamping plates 68 do not clamp the battery assembly 5.

[0038] When the half gear 611 rotates to mesh with the left and right full gears 613, the half gear 611 is no longer meshed with the upper and lower full gears 613 at this time, and at this time the left and right full gears 613 can drive the left and right reciprocating lead screws 612 to rotate synchronously, so that the reciprocating lead screws 612 drive the clamping plates 68 connected by threads to move inward, so that the left and right clamping plates 68 clamp the battery assembly 5 for clamping processing;

[0039] As the half gear 611 continues to rotate to drive the upper and lower full gears 613 to rotate, the upper and lower full gears 613 can drive the upper and lower reciprocating lead screws 612 to rotate synchronously at this time, so that the reciprocating lead screws 612 drive the clamping plates 68 connected by threads to move outward, and at this time the battery assembly 5 is in a state of being clamped and fixed by the left and right clamping plates 68;

[0040] Therefore, it can be understood that when the upper and lower clamping plates 68 clamp and fix the battery assembly 5, the left and right clamping plates 68 no longer clamp the battery assembly 5, and when the left and right clamping plates 68 clamp and fix the battery assembly 5, the upper and lower clamping plates 68 no longer clamp the battery assembly 5. The contact surfaces of the upper and lower clamping plates 68, the left and right clamping plates 68 and the battery assembly 5 are different, so that the detection liquid can contact each position of the battery assembly 5, thereby enabling detection processing of each position of the battery assembly 5;

[0041] The half gear 611 rotates to drive the upper and lower full gears 613 and the upper and lower reciprocating lead screws 612, thereby enabling the upper and lower clamping plates 68 to alternately clamp the battery assembly 5 with the left and right clamping plates 68. Because the contact surfaces of the upper and lower clamping plates 68, the left and right clamping plates 68 and the battery assembly 5 are different, the detection liquid can fully contact each position of the battery assembly 5 during the alternate clamping process, avoiding the problem that some areas are blocked and cannot be detected due to a single clamping method, thereby enabling full-range airtightness detection of the battery assembly 5. By this alternate clamping method, the battery assembly 5 is detected from different directions and angles, which can more comprehensively find possible airtightness defects of the battery assembly 5. Compared with detection in a single direction or by a fixed clamping method, the reliability of the detection result is greatly improved, the probability of missed detection is reduced, and the quality of the battery assembly 5 is ensured to meet the requirements. The cooperation of the upper and lower full gears 613 and the upper and lower reciprocating lead screws 612 enables the alternate action of the clamping plates 68 to be orderly and stable. This mechanical operation method simplifies the detection process, reduces manual intervention, improves detection efficiency, and ensures the accuracy and consistency of each clamping and detection. For a battery assembly 5 with a complex shape, a single clamping method may not be able to expose all parts well, and the alternate clamping of the upper and lower clamping plates 68 and the left and right clamping plates 68 can better adapt to battery assemblies 5 of different shapes, ensuring that the detection liquid can effectively contact each surface of the assembly and improving the versatility of the detection device for different specifications and shapes of battery assemblies 5.

[0042] Embodiment Two: Combination Figure 1 、 Figure 2 、 Figure 3 As shown in Figure 2, on the basis of Embodiment One, the outer end of the rectangular plate 4 is connected with a sliding block 621 in the vertical direction, the rectangular plate 4 is slidingly installed on the rectangular plate 4, which facilitates the up and down movement of the rectangular plate 4 and the lifting frame 3, the outer wall of the sliding block 621 is fixedly connected with a sliding rod 622, and the sliding rod 622 is transversely slidingly installed on the partition plate 2, the outer end of the sliding rod 622 is provided with a moving wheel 625, the outer wall of the sliding rod 622 is fixedly connected with a limiting block 623, and the limiting block 623 and the partition plate 2 are provided with a third damping spring 624 sleeved on the sliding rod 622, which can push the moving wheel 625 to keep in close contact with the side wall of the eccentric wheel 628 under the elastic force of the third damping spring 624; the inner wall of the glass box 1 is fixedly installed with a mounting bracket 626 on both sides, the mounting bracket 626 is rotatably installed with a rotating rod 627, and one end of the two rotating rods 627 penetrates through the glass box 1 and is drivingly connected through a synchronous belt wheel transmission member 629, and one end of the rotating rod 627 is provided with a driving motor 630 fixedly installed on the glass box 1, the outer wall of the rotating rod 627 is fixedly connected with the eccentric wheel 628, and the side wall of the eccentric wheel 628 is in close sliding contact with the moving wheel 625, by starting the driving motor 630 to drive the rotating rod 627 to rotate synchronously, the rotating rod 627 drives the other rotating rod 627 to rotate synchronously through the synchronous belt wheel transmission member 629, the two rotating rods 627 can drive the eccentric wheel 628 to rotate synchronously when rotating, and the eccentric wheel 628 can make the sliding rod 622 and the sliding block 621 reciprocate when rotating in cooperation with the elastic force of the third damping spring 624 and the moving wheel 625, so as to drive the rectangular plate 4, the lifting frame 3 and the control assembly 6 to reciprocate through the sliding block 621, and the battery assembly 5 is reciprocated in the battery liquid through the control assembly 6, which makes the battery assembly 5 change position and posture constantly in the battery liquid, so that the battery liquid can contact with each part of the battery assembly 5 more fully.

[0043] In the embodiment of the present application, by starting the driving motor 630 to drive the rotating rod 627 to rotate synchronously, the rotating rod 627 drives another rotating rod 627 to rotate synchronously through the synchronous belt pulley transmission 629, and the two rotating rods 627 can drive the eccentric wheel 628 to rotate synchronously when rotating, and the eccentric wheel 628 can make the sliding rod 622 and the sliding block 621 reciprocate when rotating in cooperation with the elastic force of the third damping spring 624 and the moving wheel 625, thereby driving the rectangular plate 4, the lifting frame 3, and the control assembly 6 to reciprocate through the sliding block 621, and driving the battery assembly 5 to reciprocate in the battery liquid through the control assembly 6, which makes the battery assembly 5 change positions and postures in the battery liquid constantly, so that the battery liquid can contact each part of the battery assembly 5 more fully, compared with static soaking, more positions of the battery assembly 5 can be detected for air tightness, which greatly enhances the comprehensiveness of detection. During the reciprocating movement, the flow state of the battery liquid around the battery assembly 5 changes constantly, which can more truly simulate various liquid impact and penetration situations that the battery assembly 5 may face in the actual use environment. Through this dynamic detection method, whether the battery assembly 5 has a slight leakage hidden danger or air tightness problem can be found more accurately, and compared with static detection, the accuracy of the detection result can be significantly improved.

[0044] Although the embodiments of the present application have been shown and described, it can be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of automobile power lithium battery pack airtightness quick detection equipment, including glass box (1) and battery component (5), it is characterized in that: The glass box (1) is fixedly installed with two baffle plates (2) on both sides of the inner cavity, a lifting frame (3) is arranged between the two baffle plates (2), rectangular plates (4) are fixedly installed on both sides of the bottom end of the lifting frame (3), and a control assembly (6) for detecting a control battery assembly (5) is arranged between the rectangular plates (4); The control assembly (6) comprises a fixed box (61) fixedly installed on the inner side of the rectangular plate (4), the fixed box (61) is rotatably connected with a mounting plate (62) on the inner side, a circular ring (63) is fixedly installed on the mounting plate (62), an adjusting piece for driving the circular ring (63) to rotate intermittently is arranged on one side of the mounting plate (62), a spline rod (64) is fixedly installed on one side of the mounting plate (62), a sleeve rod (65) is slidably connected to the outer wall of the spline rod (64), a second damping spring (66) is arranged between the sleeve rod (65) and the mounting plate (62) and is sleeved on the spline rod (64), rectangular rods (67) are fixedly connected to the outer wall of the sleeve rod (65), clamping plates (68) for clamping the battery assembly (5) are arranged at the other ends of the rectangular rods (67), and the front and rear clamping plates (68) are arranged in a staggered manner with the upper and lower clamping plates (68).

2. The automobile power lithium battery pack air tightness rapid detection equipment according to claim 1, characterized in that: The sleeve rod (65) is fixedly installed with a servo motor (69) in the inner cavity, the servo motor (69) is fixedly installed with a driving rod (610) at the output end, the other end of the driving rod (610) is fixedly installed with a half gear (611), the teeth of the half gear (611) are provided with two groups, and the two groups of teeth are symmetrically arranged, a reciprocating screw rod (612) is rotatably connected to the four peripheries of the sleeve rod (65), the reciprocating screw rod (612) is rotatably installed on the rectangular rod (67), a full gear (613) meshing with the half gear (611) is fixedly connected to one side of the reciprocating screw rod (612), the other side of the reciprocating screw rod (612) is threadedly connected with the clamping plate (68), and the clamping plate (68) is transversely slidably installed on the rectangular rod (67).

3. The automobile power lithium battery pack air tightness rapid detection equipment according to claim 1, characterized in that: The inner side of the circular ring (63) is circumferentially arranged with an inner tooth groove (614), and the outer side of the circular ring (63) is circumferentially arranged with an outer tooth groove (615).

4. The automobile power lithium battery pack air tightness rapid detection equipment according to claim 1, characterized in that: The adjusting piece comprises a rotating plate (616) rotatably installed on the rectangular plate (4), the rotating plate (616) is fixedly connected with a rotating plate (616) at the top, and auxiliary rods (619) and push rods (618) are rotatably connected to the side walls at the upper and lower ends of the rotating plate (616), and the side walls of the auxiliary rods (619) and the push rods (618) are provided with tension springs (620), the positions of the push rods (618) and the inner tooth groove (614) correspond to each other, and the positions of the auxiliary rods (619) and the outer tooth groove (615) correspond to each other.

5. The automobile power lithium battery pack air tightness rapid detection equipment according to claim 1, characterized in that: The adjusting part further comprises an adjusting motor (21) fixedly installed on the partition plate (2), an output end of the adjusting motor (21) is fixedly connected with a transmission rod (22), both sides of an outer wall of the transmission rod (22) are fixedly connected with a cam (23), one side of the cam (23) is provided with a fixed plate (24) fixedly installed on the partition plate (2), the fixed plate (24) is transversely and slidably connected with a moving rod (25), one end of the moving rod (25) is slidably matched with a side wall of the cam (23), the other end of the moving rod (25) is fixedly connected with a connecting rod (28), one end of the connecting rod (28) is fixedly connected with an adjusting rod (29), the adjusting rod (29) is movably matched with the sleeve frame (617), both sides of an inner wall of the fixed plate (24) are fixedly installed with slide rods (26), outer walls of the slide rods (26) are sleeved with first damping springs (27) for pushing the moving rod (25) to move to one side of the cam (23).

6. The automobile power lithium battery pack air tightness rapid detection equipment according to claim 1, characterized in that: The outer side end of the rectangular plate (4) is slidably connected with a sliding block (621) in the vertical direction, an outer wall of the sliding block (621) is fixedly connected with a sliding rod (622), the sliding rod (622) is transversely and slidably installed on the partition plate (2), the outer side end of the sliding rod (622) is provided with a moving wheel (625), an outer wall of the sliding rod (622) is fixedly connected with a limiting block (623), and a third damping spring (624) sleeved on the sliding rod (622) is arranged between the limiting block (623) and the partition plate (2).

7. The automobile power lithium battery pack air tightness rapid detection equipment according to claim 1, characterized in that: Both sides of an inner wall of the glass box (1) are fixedly installed with mounting racks (626), the mounting racks (626) are rotatably installed with rotating rods (627), one end of each of the rotating rods (627) penetrates through the glass box (1) and is drivingly connected through a synchronous belt wheel transmission member (629), and one end of one of the rotating rods (627) is provided with a driving motor (630) fixedly installed on the glass box (1), an outer wall of the rotating rod (627) is fixedly connected with an eccentric wheel (628), and the eccentric wheel (628) is slidably matched with the moving wheel (625).

Images