A vacuum-assisted battery pack rapid airtightness detection inflation device

Abstract

The utility model relates to battery package airtightness detects the field of inflation, especially based on the quick airtightness detection inflation device of battery package of vacuum auxiliary. The utility model provides a kind of to seal between sealing cover and detection box while closing sealing cover, avoid the formation of poor sealing interference vacuum environment based on the quick airtightness detection inflation device of vacuum auxiliary of battery package. A kind of quick airtightness detection inflation device of battery package based on vacuum auxiliary, including base and first electric guide rail etc., base left and right two parts upper side are connected with first electric guide rail. The utility model passes through sealing extrusion block extrusion connecting rod, drives connecting rod rotation, so that connecting rod extrusion damper, while connecting rod rotates, extrusion push plate and move sealing extrusion block inward, so that push plate and sealing cover contact and seal, reach to seal between sealing cover and detection box while closing sealing cover, avoid the formation of poor sealing interference vacuum environment effect.

Description

Technical Field

[0001] This utility model relates to the field of battery pack airtightness testing and inflation, and in particular to a vacuum-assisted rapid airtightness testing and inflation device for battery packs. Background Technology

[0002] In the production and manufacturing process of battery packs, airtightness testing is a key step in ensuring the quality and safety of battery packs. Battery packs need to have good sealing performance to prevent external moisture, dust and other impurities from entering the interior, while avoiding leakage of internal electrolyte. This ensures the stable operation of the battery pack in various complex environments, extends its service life, and reduces safety hazards caused by airtightness problems, such as short circuits and fires.

[0003] A device and method for airtight testing of a new energy vehicle battery pack, with publication number CN119533776A, includes a housing. A limiting shaft is rotatably connected to the top of the housing. A cover plate is fixedly connected to the outer ring of the limiting shaft. Both sides of the bottom of the cover plate are provided with gas guiding structures. A swinging structure for stirring the gas is provided in the middle of the cover plate. A clamping structure for holding the battery pack is provided at the bottom of the swinging structure. The cover plate covers the surface of the housing and drives the guiding structure to bend and guide the gas to protect the battery pack, thereby preventing high-pressure gas from damaging the battery pack when it enters the battery pack. However, since the device does not provide a sealing structure between the cover plate and the housing, when testing is required in a vacuum environment, the required vacuum level cannot be quickly reached and maintained in the housing. This is because poor sealing will allow external air to continuously seep into the housing, interfering with the formation of a vacuum environment.

[0004] Therefore, it is necessary to design a vacuum-assisted rapid airtightness testing and inflation device for battery packs that can seal the seal between the sealing cover and the test chamber while closing the sealing cover, so as to avoid poor sealing interfering with the formation of the vacuum environment. Utility Model Content

[0005] To overcome the shortcomings of existing technologies that do not have a sealing structure between the cover and the housing, and which cannot quickly achieve and maintain the required vacuum level when testing in a vacuum environment because poor sealing allows external air to continuously seep into the housing and interfere with the formation of a vacuum environment, this utility model provides a vacuum-assisted rapid airtightness testing inflation device for battery packs that can seal the cover and the testing chamber simultaneously when the cover is closed, thus avoiding poor sealing from interfering with the formation of a vacuum environment.

[0006] The technical implementation scheme of this utility model is as follows: a vacuum-assisted rapid airtightness testing and inflation device for battery packs, comprising a base, a first electric guide rail, a testing box, support blocks, a sealing ring, a sealing compression block, a sealing cover, a pressure plate, a fixing frame, a hydraulic cylinder, a testing component, and a sealing component. The upper sides of the left and right sides of the base are connected to the first electric guide rail, which is electrically connected to the processor via a control module. A testing box is connected between the sliders of the first electric guide rails. Multiple support blocks are connected to the bottom of the testing box. A sealing ring is connected to the upper side of the testing box, and a sealing compression block is fitted onto the testing box. A hydraulic cylinder is connected to the upper middle part of the base, which is electrically connected to the processor via a control module. A fixing frame is connected to the telescopic end of the hydraulic cylinder. Pressure plates are connected to the lower sides of the four sides of the fixing frame, and a sealing cover is connected between the lower sides of the pressure plates. The sealing cover is equipped with a testing component capable of inflation and vacuuming. The testing box is equipped with a sealing component capable of sealing the sealing cover and the testing box simultaneously when the sealing cover is closed.

[0007] More preferably, the outer side of the sealing extrusion block is made of elastic material.

[0008] More preferably, the detection assembly includes a vacuum pump, an air pump, an air guide tube, and an air inlet. Vacuum pumps are connected to the upper sides of both the left and right sides of the sealing cover, and an air pump is connected to the lower part of the base. An air guide tube is connected to the air pump, and a connecting block is provided on the air guide tube. An air inlet is threadedly connected to both the front and rear parts of the connecting block.

[0009] More preferably, it also includes a sealing assembly, which includes a push plate, connecting rods and dampers. Push plates are slidably connected to the front, back, left and right sides of the test box. Two connecting rods are rotatably connected to the front, back, left and right sides of the test box. The connecting rods are in contact with the adjacent push plates and the sealing extrusion blocks. Multiple sets of dampers are connected to the test box, each set consisting of two dampers. The dampers are in contact with the adjacent connecting rods.

[0010] More preferably, the connecting rod has an L-shaped structure.

[0011] More preferably, it also includes a second electric guide rail and a limiting rod. Two second electric guide rails are connected to the inner left side of the detection box. The second electric guide rails are electrically connected to the processor through the control module. The sliders of the second electric guide rails are all connected to the limiting rods.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The present invention uses a sealing extrusion block to extrude the connecting rod, which drives the connecting rod to rotate, causing the connecting rod to extrude the damper. While the connecting rod rotates, it will extrude the push plate to move inward and extrude the sealing extrusion block, so that the push plate contacts the sealing cover to seal. This achieves the effect of sealing the sealing cover and the detection box at the same time as closing the sealing cover, avoiding poor sealing from interfering with the formation of the vacuum environment.

[0013] 2. This utility model uses the second electric guide rail to move the limiting rod inward to clamp and limit the battery pack, thus achieving the effect of clamping and limiting the battery pack and preventing it from shaking. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the hydraulic cylinder and vacuum pump components of this utility model.

[0016] Figure 3 This is a cross-sectional three-dimensional structural diagram of the push plate and connecting rod components of this utility model.

[0017] Figure 4 This is a cross-sectional three-dimensional structural diagram of the connecting rod and damper components of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the testing box and support block of this utility model.

[0019] The components in the attached diagram are labeled as follows: 1. Base, 2. First electric guide rail, 3. Detection box, 31. Support block, 4. Sealing ring, 41. Sealing compression block, 5. Sealing cover, 6. Pressure plate, 7. Fixing frame, 8. Hydraulic cylinder, 9. Vacuum pump, 10. Air pump, 101. Air guide pipe, 11. Push plate, 111. Connecting rod, 12. Damper, 13. Second electric guide rail, 131. Limiting rod, 14. Inflation nozzle. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] A vacuum-assisted rapid airtightness testing and inflation device for battery packs, such as... Figures 1-5As shown, the system includes a base 1, a first electric guide rail 2, a detection box 3, a support block 31, a sealing ring 4, a sealing extrusion block 41, a sealing cover 5, a pressure plate 6, a fixing frame 7, a hydraulic cylinder 8, a detection component, and a sealing component. The upper left and right sides of the base 1 are connected to the first electric guide rail 2. The first electric guide rail 2 is electrically connected to the processor through a control module. The sliders of the first electric guide rail 2 are connected to the detection box 3. The bottom of the detection box 3 is connected to three support blocks 31. The upper side of the detection box 3 is connected to the sealing ring 4. The sealing extrusion block 41 is fitted on the detection box 3. The outer side of the sealing extrusion block 41 is made of elastic material. The upper middle part of the base 1 is connected to the hydraulic cylinder 8. The hydraulic cylinder 8 is electrically connected to the processor through a control module. The telescopic end of the hydraulic cylinder 8 is connected to the fixing frame 7. The lower sides of the four parts of the fixing frame 7 are connected to the pressure plate 6. The lower sides of the pressure plate 6 are connected to the sealing cover 5. The sealing cover 5 is equipped with a detection component. The detection box 3 is equipped with a sealing component.

[0022] like Figure 1 , Figure 2 and Figure 5 As shown, the detection assembly includes a vacuum pump 9, an air pump 10, an air guide tube 101, and an air inlet 14. The upper sides of the left and right sides of the sealing cover 5 are connected to the vacuum pump 9, the lower part of the base 1 is connected to the air pump 10, the air guide tube 101 is connected to the air pump 10, the air guide tube 101 is provided with a connecting block, and the front and rear parts of the connecting block are threadedly connected to the air inlet 14.

[0023] like Figure 3 and Figure 4 As shown, it also includes a sealing assembly, which includes a push plate 11, a connecting rod 111, and a damper 12. The push plate 11 is slidably connected to the front, back, left, and right sides of the test box 3. Two connecting rods 111 are rotatably connected to the front, back, left, and right sides of the test box 3. The connecting rods 111 have an L-shaped structure to facilitate compression. The connecting rods 111 are in contact with the adjacent push plate 11 and the sealing compression block 41. Four sets of dampers 12 are connected to the test box 3. Each set consists of two dampers 12. The dampers 12 are in contact with the adjacent connecting rods 111.

[0024] like Figure 5 As shown, it also includes a second electric guide rail 13 and a limiting rod 131. The inner left side of the detection box 3 is connected to two second electric guide rails 13, one in front and one behind. The second electric guide rails 13 are electrically connected to the processor through the control module. The sliders of the second electric guide rails 13 are all connected to the limiting rods 131.

[0025] When using this device, first place the base 1 in the battery pack airtightness testing area, then place the battery pack inside the base 1 and support it with the support block 31. Next, connect the battery pack to the inflation nozzle 14. Then, use the processor to start the second electric guide rail 13 through the control module, which drives the limit rod 131 to move inward to clamp and limit the battery pack, thereby clamping and limiting the battery pack and preventing it from shaking. Then, start the hydraulic cylinder 8 to drive the fixing frame 7, pressure plate 6, and sealing cover 5 to move downward, so that the sealing cover 5 contacts the sealing ring 4 and the sealing compression block 41. When the sealing cover 5 continues to move downward, it will squeeze the sealing compression block 41 to move downward. The sealing compression block 41 compresses the connecting rod 111, causing the connecting rod 111 to rotate. This causes the connecting rod 111 to compress the damper 12, deforming the spring on the damper 12. As the connecting rod 111 rotates, it compresses the push plate 11, which moves inward to compress the sealing compression block 41. This causes the push plate 11 to contact the sealing cover 5 for sealing, thus sealing the sealing cover 5 and the test box 3 simultaneously. This prevents poor sealing from interfering with the formation of the vacuum environment. Then, the vacuum pump 9 is started to evacuate the test box 3 and the sealing cover 5. Finally, the air pump 10 is started to allow gas to enter the battery pack for testing through the air guide pipe 101 and the air inlet 14.

[0026] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A vacuum-assisted rapid airtightness testing and inflation device for battery packs, characterized in that, The system includes a base (1), a first electric guide rail (2), a detection box (3), a support block (31), a sealing ring (4), a sealing compression block (41), a sealing cover (5), a pressure plate (6), a fixing frame (7), a hydraulic cylinder (8), a detection assembly, and a sealing assembly. The upper sides of both the left and right sides of the base (1) are connected to the first electric guide rail (2). The first electric guide rail (2) is electrically connected to the processor via a control module. The sliders of the first electric guide rail (2) are connected to the detection box (3). Multiple support blocks (31) are connected to the bottom of the detection box (3). A sealing ring (4) is connected to the upper side of the detection box (3). 4) A sealing compression block (41) is fitted on the test box (3). A hydraulic cylinder (8) is connected to the upper part of the base (1). The hydraulic cylinder (8) and the processor are electrically connected through the control module. A fixed frame (7) is connected to the telescopic end of the hydraulic cylinder (8). A pressure plate (6) is connected to the lower side of the four parts of the fixed frame (7). A sealing cover (5) is connected between the lower sides of the pressure plate (6). A test component that can be inflated and vacuumed is provided on the sealing cover (5). A sealing component that can seal between the sealing cover (5) and the test box (3) at the same time as closing the sealing cover (5) is provided on the test box (3).

2. The vacuum-assisted rapid airtightness testing and inflation device for battery packs according to claim 1, characterized in that, The outer side of the sealing extrusion block (41) is made of elastic material.

3. A vacuum-assisted rapid airtightness testing and inflation device for battery packs according to claim 1, characterized in that, The detection assembly includes a vacuum pump (9), an air pump (10), an air guide tube (101), and an air inlet (14). The upper sides of the left and right sides of the sealing cover (5) are connected to the vacuum pump (9), the lower part of the base (1) is connected to the air pump (10), the air guide tube (101) is connected to the air pump (10), the air guide tube (101) is provided with a connecting block, and the front and rear parts of the connecting block are threadedly connected to the air inlet (14).

4. A vacuum-assisted rapid airtightness testing and inflation device for a battery pack according to claim 1, characterized in that, It also includes a sealing assembly, which includes a push plate (11), a connecting rod (111) and a damper (12). The test box (3) is slidably connected to the push plate (11) on all four sides. The test box (3) is rotatably connected to two connecting rods (111) on all four sides. The connecting rods (111) are in contact with the adjacent push plate (11) and the connecting rods (111) are in contact with the sealing extrusion block (41). Multiple sets of dampers (12) are connected on the test box (3). Each set consists of two dampers (12). The dampers (12) are in contact with the adjacent connecting rods (111).

5. A vacuum-assisted rapid airtightness testing and inflation device for a battery pack according to claim 4, characterized in that, The connecting rod (111) has an L-shaped structure.

6. A vacuum-assisted rapid airtightness testing and inflation device for a battery pack according to claim 1, characterized in that, It also includes a second electric guide rail (13) and a limit rod (131). The inner left side of the detection box (3) is connected to two second electric guide rails (13). The second electric guide rails (13) are electrically connected to the processor through the control module. The slider of the second electric guide rail (13) is connected to the limit rod (131).

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