Pressure compensation type battery pack air tightness detection inflation equipment

Abstract

This utility model relates to the field of battery pack airtightness testing, and more particularly to a pressure-compensated battery pack airtightness testing inflation device. This utility model provides a pressure-compensated battery pack airtightness testing inflation device that can perform adhesive sealing when a battery pack leak is detected, reducing time delays caused by rework and improving production efficiency. A pressure-compensated battery pack airtightness testing inflation device includes a support frame and a support bracket, with the support bracket placed below the support frame. This utility model uses an internal air pressure detector to detect a change in air pressure between the sealing cap and the placement bracket. When this changes pressure, the pump opens, causing the sealant in the storage cylinder to be discharged onto the battery pack through the dispensing bracket. This achieves the effect of performing adhesive sealing when a battery pack leak is detected, reducing time delays caused by rework and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery pack air tightness testing, and in particular to a pressure-compensated battery pack air tightness testing inflation device. Background Technology

[0002] In the era of rapid development of the new energy vehicle industry, the battery pack, as its core power source, directly determines the safety, reliability and range of the entire vehicle. Among them, the airtightness of the battery pack is a key factor to ensure its normal operation.

[0003] Existing battery pack airtightness testing typically involves placing the battery pack in a sealed test chamber and then inflating it. When a leak is detected, the battery pack usually needs to be removed and sent to a rework area for adhesive sealing, which consumes a lot of time and labor costs and results in low production efficiency.

[0004] Therefore, it is necessary to design a pressure-compensated battery pack air tightness testing and inflation device that can perform adhesive sealing when battery pack leakage is detected, reduce time delays caused by rework, and improve production efficiency. Utility Model Content

[0005] To overcome the shortcomings of existing battery pack air tightness testing processes, which typically require removing the battery pack and sending it to a rework area for adhesive sealing when air leakage is detected, resulting in significant time and labor costs and low production efficiency, this invention provides a pressure-compensated battery pack air tightness testing inflation device that can perform adhesive sealing when battery pack leakage is detected, reducing time delays caused by rework and improving production efficiency.

[0006] The technical implementation scheme of this utility model is as follows: a pressure-compensated battery pack air tightness testing inflation device, including a support frame, a support bracket, a first motor, a first lead screw, a placement bracket, an internal air pressure detector, a support guide bracket, a sealing cover, a second multi-stage cylinder, a compensation component, and a dispensing component. The support bracket is placed below the support frame. The first motor is connected to the upper right front part of the support bracket. The first motor and the processor are electrically connected through a control module. The first lead screw is connected to the output shaft of the first motor. The first lead screw is rotatably connected to the support bracket. The placement bracket is threadedly connected to the first lead screw. The placement bracket is slidably connected to the support frame. Two internal air pressure detectors are connected to the left front part of the sealing cover. The support guide bracket is connected to the upper inner part of the support frame. The second multi-stage cylinder is connected to the middle part of the support guide bracket. The second multi-stage cylinder and the processor are electrically connected through a control module. The sealing cover is connected to the telescopic end of the second multi-stage cylinder. The right side of the placement bracket is provided with a compensation component that can compensate for the pressure in the test chamber according to changes in external air pressure. The sealing cover is provided with a dispensing component that can perform dispensing and sealing when air leakage is detected in the battery pack.

[0007] More preferably, the sides of the sealing cap are made of rubber.

[0008] More preferably, the compensation component includes an air pump, a vent valve, a first multi-stage cylinder, a sealing frame, a telescopic tube, and an external air pressure detector. The air pump is connected to the front right side of the placement frame, and a pipe is provided on the air pump. A vent valve is provided on the upper side of the pipe, and the first multi-stage cylinder is connected to the lower side of the pipe. The first multi-stage cylinder and the processor are electrically connected through a control module. The sealing frame is connected to the telescopic end of the first multi-stage cylinder, and a telescopic tube is connected between the sealing frame and the pipe. An external air pressure detector is connected to the upper right front side of the sealing cover.

[0009] More preferably, the expansion joint is a corrugated pipe.

[0010] More preferably, it also includes a dispensing assembly, which includes a sealant storage cylinder and a dispensing frame. The sealant storage cylinder is connected to the upper left front part of the sealing cover, and the dispensing frame is connected inside the sealing cover. The dispensing frame and the sealant storage cylinder are connected through a pump body.

[0011] More preferably, it also includes a connecting frame, a second motor, a second lead screw, and a sealing frame. The connecting frame is connected to the upper side of the support frame, and the second motor is connected to the lower middle side of the connecting frame. The second motor is connected to the support frame, and the second motor and the processor are electrically connected through a control module. The second lead screw is connected to the output shaft of the second motor, and the second lead screw is rotatably connected to the connecting frame. The sealing frame is threadedly connected to the second lead screw, and the sealing frame is slidably connected to the connecting frame and the support guide frame. The sealing frame contacts the sealing cover.

[0012] Compared with the prior art, the present invention has the following advantages: 1. When the internal air pressure detector detects a change in the air pressure between the sealing cover and the placement rack, the pump body is turned on, so that the adhesive in the sealant storage cylinder is discharged onto the battery pack through the dispensing rack. This achieves the effect of dispensing and sealing when the battery pack is detected to be leaking, reducing time delays caused by rework and improving production efficiency.

[0013] 2. This utility model starts the second motor, which drives the second lead screw to rotate, causing the sealing frame to move downward under the action of the thread, so that the sealing frame contacts the sealing cover and presses the side of the sealing cover to seal it, thus achieving the effect of pressing the side of the sealing cover tightly and avoiding air leakage during the test.

[0014] 3. This utility model compensates for the pressure difference between the sealing cover and the placement rack by starting the air pump when the external air pressure increases and releasing air by opening the vent valve when the external air pressure decreases. This maintains a constant relative pressure difference between the test chamber and the external environment, thus achieving the effect of compensating for the pressure in the test chamber according to changes in external air pressure, avoiding misjudgment, and improving the accuracy of the test. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the first lead screw and the placement frame of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the first multi-stage cylinder and sealing frame of this utility model.

[0018] Figure 4 This is a cross-sectional three-dimensional structural diagram of the second motor and the second lead screw of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the external air pressure detector and sealant storage cylinder of this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the sealant storage cylinder and dispensing rack of this utility model.

[0021] The meanings of the reference numerals in the attached diagram are as follows: 1. Support frame, 2. Support bracket, 3. First motor, 4. First lead screw, 5. Placement bracket, 6. Internal air pressure detector, 7. Air pump, 71. Air release valve, 8. First multi-stage cylinder, 9. Sealing bracket, 10. Telescopic tube, 11. Support guide bracket, 12. Sealing cover, 13. Second multi-stage cylinder, 14. Connecting frame, 15. Second motor, 16. Second lead screw, 17. Sealing bracket, 18. External air pressure detector, 19. Sealant storage cylinder, 20. Dispensing bracket. Detailed Implementation

[0022] 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.

[0023] A pressure-compensated battery pack airtightness testing inflation device, such as Figure 1 , Figure 2 and Figure 4As shown, the system includes a support frame 1, a support bracket 2, a first motor 3, a first lead screw 4, a placement rack 5, an internal air pressure detector 6, a support guide frame 11, a sealing cover 12, a second multi-stage cylinder 13, a compensation assembly, and a dispensing assembly. The support bracket 2 is placed in the lower part of the support frame 1. The first motor 3 is connected to the upper right front part of the support bracket 2. The first motor 3 and the processor are electrically connected through a control module. The first lead screw 4 is connected to the output shaft of the first motor 3. The first lead screw 4 is rotatably connected to the support bracket 2. A threaded connection is made to the first lead screw 4. The placement rack 5 is slidably connected to the support frame 2. The left front side of the sealing cover 12 is connected to two internal air pressure detectors 6. The upper inner side of the support frame 1 is connected to the support guide frame 11. The middle of the support guide frame 11 is connected to the second multi-stage cylinder 13. The second multi-stage cylinder 13 and the processor are electrically connected through the control module. The sealing cover 12 is connected to the telescopic end of the second multi-stage cylinder 13. The side of the sealing cover 12 is made of rubber for easy sealing. The right side of the placement rack 5 is provided with a compensation component. The sealing cover 12 is provided with a dispensing component.

[0024] like Figure 2 , Figure 3 and Figure 5 As shown, the compensation assembly includes an air pump 7, a vent valve 71, a first multi-stage cylinder 8, a sealing frame 9, a telescopic tube 10, and an external air pressure detector 18. The air pump 7 is connected to the front right side of the placement frame 5. The air pump 7 is equipped with a pipe. The vent valve 71 is installed on the upper side of the pipe. The first multi-stage cylinder 8 is connected to the lower side of the pipe. The first multi-stage cylinder 8 and the processor are electrically connected through a control module. The sealing frame 9 is connected to the telescopic end of the first multi-stage cylinder 8. The telescopic tube 10 is connected between the sealing frame 9 and the pipe. The telescopic tube 10 is a corrugated pipe for easy extension and retraction. The external air pressure detector 18 is connected to the upper right front side of the sealing cover 12.

[0025] like Figure 5 and Figure 6 As shown, it also includes a dispensing assembly, which includes a sealant storage cylinder 19 and a dispensing frame 20. The sealant storage cylinder 19 is connected to the upper left front part of the sealing cover 12, and the dispensing frame 20 is connected inside the sealing cover 12. The dispensing frame 20 and the sealant storage cylinder 19 are connected through a pump body.

[0026] like Figure 1 and Figure 4As shown, it also includes a connecting frame 14, a second motor 15, a second lead screw 16, and a sealing frame 17. The connecting frame 14 is connected to the upper side of the support frame 1, and the second motor 15 is connected to the lower side of the middle part of the connecting frame 14. The second motor 15 is connected to the support frame 1, and the second motor 15 and the processor are electrically connected through a control module. The second lead screw 16 is connected to the output shaft of the second motor 15. The second lead screw 16 is rotatably connected to the connecting frame 14. The sealing frame 17 is threadedly connected to the second lead screw 16. The sealing frame 17 is slidably connected to the connecting frame 14 and slidably connected to the support guide frame 11. The sealing frame 17 is in contact with the sealing cover 12.

[0027] When using this device, first place the support frame 1 and support bracket 2 in the battery pack airtightness testing area, then place the battery pack in the placement bracket 5. The processor starts the first motor 3 through the control module, driving the first lead screw 4 to rotate, causing the placement bracket 5 to move backward under the action of the thread, so that the placement bracket 5 is located below the sealing cover 12. Then, the processor starts the second multi-stage cylinder 13 through the control module, driving the sealing cover 12 to move downward, so that the sealing cover 12 contacts the placement bracket 5, forming a sealed test chamber between the sealing cover 12 and the placement bracket 5. Next, start the second motor 15, driving the second lead screw 16 to rotate, causing the sealing bracket 17 to move downward under the action of the thread, so that the sealing bracket 17 contacts the sealing cover 12, pressing the side of the sealing cover 12 to seal it, thereby pressing the side of the sealing cover 12 tightly to prevent air leakage during the test. After that, start the first multi-stage cylinder 8, driving the sealing bracket 9 to move backward, and the telescopic tube 10 extends, so that the sealing bracket 9 is inserted into the sealing cover 12. Then start the gas... Pump 7 injects a set amount of gas through a pipeline into the space between the sealing cover 12 and the placement rack 5 to test the airtightness of the battery pack. During the test, the external air pressure is detected by the external air pressure detector 18, and the air pressure between the sealing cover 12 and the placement rack 5 is detected by the internal air pressure detector 6. If the external air pressure increases, the air pump 7 starts to inject air into the space between the sealing cover 12 and the placement rack 5 to compensate. If the external air pressure decreases, the vent valve 71 opens to release air, so that a constant relative pressure difference is maintained between the test chamber and the external environment. This allows for pressure compensation within the test chamber based on changes in external air pressure, avoiding misjudgments and improving test accuracy. When the internal air pressure detector 6 detects a change in the air pressure between the sealing cover 12 and the placement rack 5, it indicates that there is a leak in the battery pack. At this time, the pump starts, allowing the adhesive in the sealant storage cylinder 19 to be discharged onto the battery pack through the dispensing rack 20. This allows for dispensing and sealing when a leak is detected in the battery pack, reducing time delays caused by rework and improving production efficiency.

[0028] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A pressure-compensated battery pack airtightness testing and inflation device, characterized in that: It includes a support frame (1), a support bracket (2), a first motor (3), a first lead screw (4), a placement bracket (5), an internal air pressure detector (6), a support guide bracket (11), a sealing cover (12), a second multi-stage cylinder (13), a compensation component, and a dispensing component. The support bracket (2) is placed in the lower part of the support frame (1). The first motor (3) is connected to the upper right front part of the support bracket (2). The first motor (3) and the processor are electrically connected through a control module. The first lead screw (4) is connected to the output shaft of the first motor (3). The first lead screw (4) is rotatably connected to the support bracket (2). The placement bracket (5) is threadedly connected to the first lead screw (4). The placement frame (5) is slidably connected to the support frame (2). The left front side of the sealing cover (12) is connected to two internal air pressure detectors (6). The upper inner side of the support frame (1) is connected to the support guide frame (11). The middle part of the support guide frame (11) is connected to the second multi-stage cylinder (13). The second multi-stage cylinder (13) and the processor are electrically connected through the control module. The extension end of the second multi-stage cylinder (13) is connected to the sealing cover (12). The right side of the placement frame (5) is provided with a compensation component that can compensate for the pressure in the test chamber according to the change of external air pressure. The sealing cover (12) is provided with a dispensing component that can perform dispensing and sealing when the battery pack is detected to be leaking.

2. The pressure-compensated battery pack air tightness testing inflation device according to claim 1, characterized in that: The sides of the sealing cap (12) are made of rubber.

3. The pressure-compensated battery pack air tightness testing inflation device according to claim 1, characterized in that: The compensation components include an air pump (7), a vent valve (71), a first multi-stage cylinder (8), a sealing frame (9), a telescopic tube (10), and an external air pressure detector (18). The air pump (7) is connected to the front right side of the placement frame (5). The air pump (7) is equipped with a pipe. A vent valve (71) is installed on the upper side of the pipe. The first multi-stage cylinder (8) is connected to the lower side of the pipe. The first multi-stage cylinder (8) and the processor are electrically connected through a control module. The sealing frame (9) is connected to the telescopic end of the first multi-stage cylinder (8). The telescopic tube (10) is connected between the sealing frame (9) and the pipe. The external air pressure detector (18) is connected to the upper right front side of the sealing cover (12).

4. A pressure-compensated battery pack air tightness testing inflation device according to claim 3, characterized in that: The telescopic tube (10) is a corrugated pipe.

5. A pressure-compensated battery pack air tightness testing inflation device according to claim 1, characterized in that: It also includes a dispensing assembly, which includes a sealant storage cylinder (19) and a dispensing frame (20). The sealant storage cylinder (19) is connected to the upper left front part of the sealing cap (12), and the dispensing frame (20) is connected inside the sealing cap (12). The dispensing frame (20) and the sealant storage cylinder (19) are connected through a pump body.

6. A pressure-compensated battery pack air tightness testing inflation device according to claim 1, characterized in that: It also includes a connecting frame (14), a second motor (15), a second lead screw (16) and a sealing frame (17). The connecting frame (14) is connected to the upper side of the support frame (1). The second motor (15) is connected to the lower side of the middle part of the connecting frame (14). The second motor (15) is connected to the support frame (1). The second motor (15) and the processor are electrically connected through the control module. The second lead screw (16) is connected to the output shaft of the second motor (15). The second lead screw (16) is rotatably connected to the connecting frame (14). The sealing frame (17) is threadedly connected to the second lead screw (16). The sealing frame (17) is slidably connected to the connecting frame (14). The sealing frame (17) is slidably connected to the support guide frame (11). The sealing frame (17) is in contact with the sealing cover (12).

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