Battery box shell airtightness detection device

Abstract

This utility model discloses a battery box shell airtightness testing device, including a water tank base and a battery testing shell. A lifting seat is movably connected to the inner side of the water tank base, and a lifting assembly is fixedly connected to the top of the lifting seat. The lifting assembly is used to connect the lifting seat and the water tank base. Placement slots are provided at all four ends of the top surface of the lifting seat. Clamping blocks are movably connected to both sides of the inner wall of the placement slots. The battery testing shell is located inside the clamping blocks. An adjustment assembly is provided at the center of the two clamping blocks, which is used to connect the clamping blocks and the placement slots. The adjustment assembly includes a knob, one end of which is provided with a transmission rod, and the other end of the transmission rod is rotatably connected to a lead screw A. This utility model allows the clamping blocks to clamp battery testing shells of different sizes by rotating the knob, which, in conjunction with the transmission rod and lead screw A, enables batch testing of battery testing shells. Furthermore, the lifting seat has four placement slots on its outer side, allowing for batch testing of battery testing shells and improving the testing efficiency of the device.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing devices, and more particularly to an airtightness testing device for battery box casings. Background Technology

[0002] A well-sealed car battery box can prevent water, dust, and other substances from entering the battery, thus avoiding battery performance degradation or short circuit accidents. However, if the sealing of the car battery box is compromised, it can seriously damage electrical safety and battery performance.

[0003] In scenarios such as heavy rain and wading, if the battery pack does not meet the sealing requirements, the vehicle may not be able to start. During driving, it may limit power and cause abnormal stops. When charging, it may interrupt charging. More seriously, it may cause high-voltage short circuits in the battery circuits, leading to fires or explosions, or low-voltage short circuits, leading to smoke or fires. Therefore, testing the sealing performance of the battery box is a key step in the manufacturing process of new energy vehicles.

[0004] However, the commonly used method for airtightness testing is the bubble method, which involves sealing all the holes in the battery box, filling it with air, and then placing it in water to see if bubbles are generated. This method is simple to operate and can directly observe the location and extent of the leak. However, the battery boxes for new energy vehicles vary in size, and the fixing mechanism of the testing agency is not easy to adjust according to different battery boxes for new energy vehicles, resulting in limited applicability. Utility Model Content

[0005] To overcome the problem that existing new energy vehicle battery boxes vary in size and that the fixing mechanism of testing institutions is not easy to adjust according to different new energy vehicle battery boxes, resulting in weak applicability.

[0006] The technical solution of this utility model is as follows: a battery box shell airtightness testing device, including a water tank base and a battery testing shell. A lifting seat is movably connected to the inner side of the water tank base, and a lifting assembly is fixedly connected to the top of the lifting seat. The lifting assembly is used to connect the lifting seat and the water tank base. Placement slots are opened at all four ends of the top surface of the lifting seat. Clamping blocks are movably connected to both sides of the inner wall of the placement slot. The battery testing shell is located inside the clamping blocks. An adjustment assembly is provided at the center of the two clamping blocks. The adjustment assembly is used to connect the clamping blocks and the placement slots. The adjustment assembly includes a knob. A transmission rod is provided at one end of the knob. A lead screw A is rotatably connected to one end of the transmission rod. Both ends of the lead screw A extend to the outside of the clamping blocks and are rotatably connected to the placement slots. When the knob drives the transmission rod to rotate, the transmission rod transmits the power of the knob to the lead screw A, so that the lead screw A drives the two clamping blocks to move inside the placement slots.

[0007] Preferably, by rotating the knob, the knob, in conjunction with the transmission rod and lead screw A, allows the clamping block to clamp battery test casings of different sizes, and four placement slots are provided on the outer side of the lifting seat. This enables batch testing of battery test casings and improves the testing efficiency of the device.

[0008] Preferably, the lifting assembly includes a cylinder, with a rod fixedly connected to the output end of the cylinder. The bottom end of the rod extends to the top of the lifting seat, and the connecting rod and the lifting seat are fixedly connected by bolts. When the cylinder drives the connecting rod to move, the connecting rod drives the lifting seat to move up and down inside the water tank seat.

[0009] Preferably, air supply components are fixedly connected to both sides of the lifting assembly. The air supply components include an air pump (electric air pumps generally use a motor to drive a piston or air bag to reciprocate, and cooperate with a one-way valve to achieve directional gas delivery). The output end of the air pump is fixedly connected to a connecting pipe, and the other end of the connecting pipe is fixedly connected to the battery detection housing. When the air supply assembly is running, the air pump inputs external air into the inside of the battery detection housing through the connecting pipe.

[0010] Preferably, a control panel is fixedly connected to the front end of the sink base. The control panel is electrically connected to both the lifting assembly and the air supply assembly, and the lifting assembly and the air supply assembly can be controlled separately through the control panel.

[0011] Preferably, the inner wall of the placement groove is provided with a displacement groove, and the two sides of the clamping block extend to the inner side of the displacement groove. When the clamping block moves, the clamping block is displaced inside the displacement groove.

[0012] Preferably, bevel gears are provided at one end of the transmission rod and at the center of the lead screw A. When the knob drives the transmission rod to rotate, the transmission rod, in conjunction with the bevel gears, drives the lead screw A to rotate. The knob is a self-locking knob (a self-locking knob is existing technology. According to the existing patent CNU, a self-locking knob structure is achieved through the mutual cooperation between the knob and the sliding buckle. Every time the knob is rotated by a certain angle, the locking block above it rotates by the corresponding angle, thereby locking the product. Furthermore, through the cooperation of the first locking slide and the second locking slide, the knob can be kept locked in a specific position, preventing accidental unlocking).

[0013] Preferably, lead screw A is a double-threaded lead screw with symmetrical threads at both ends, and lead screw A meshes with the two clamping blocks.

[0014] The beneficial effects of this utility model are:

[0015] 1. The battery box shell airtightness testing device, by rotating the knob, the knob, in conjunction with the transmission rod and lead screw A, enables the clamping block to clamp battery test shells of different sizes;

[0016] 2. The battery box casing airtightness testing device has four placement slots on the outside of the lifting base. This allows for batch testing of battery casings, improving the testing efficiency of the device. Attached Figure Description

[0017] Figure 1 The diagram shown illustrates the overall structure of the battery box shell airtightness testing device of this utility model. Figure 1 ;

[0018] Figure 2 The diagram shown illustrates the overall structure of the battery box shell airtightness testing device of this utility model. Figure 2 ;

[0019] Figure 3 The diagram shown is a schematic representation of the lifting base structure of the battery box shell airtightness testing device of this utility model;

[0020] Figure 4 The diagram shown is a schematic of the clamping block structure of the battery box shell airtightness testing device of this utility model;

[0021] Figure 5 The diagram shown is a schematic of the knob structure of the battery box shell airtightness detection device of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Water tank base; 2. Control panel; 3. Lifting seat; 4. Placement slot; 5. Battery detection housing; 6. Clamping block; 7. Cylinder; 8. Air rod; 9. Air pump; 10. Connecting pipe; 11. Knob; 12. Displacement slot; 13. Lead screw A; 14. Transmission rod; 15. Bevel gear. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5This utility model provides an embodiment of a battery box shell airtightness testing device, including a water tank base 1 and a battery testing shell 5. A lifting seat 3 is movably connected to the inner side of the water tank base 1, and a lifting assembly is fixedly connected to the top of the lifting seat 3. The lifting assembly is used to connect the lifting seat 3 and the water tank base 1. Placement slots 4 are provided at all four ends of the top surface of the lifting seat 3. Clamping blocks 6 are movably connected to both sides of the inner wall of the placement slots 4. The battery testing shell 5 is located inside the clamping blocks 6. An adjustment is provided at the center of the two clamping blocks 6. The entire assembly includes an adjustment assembly for connecting the clamping block 6 and the placement groove 4. The adjustment assembly includes a knob 11, one end of which is provided with a transmission rod 14. One end of the transmission rod 14 is rotatably connected to a lead screw A13. Both ends of the lead screw A13 extend to the outside of the clamping block 6 and are rotatably connected to the placement groove 4. When the knob 11 drives the transmission rod 14 to rotate, the transmission rod 14 transmits the power of the knob 11 to the lead screw A13, causing the lead screw A13 to drive the two clamping blocks 6 to move inside the placement groove 4.

[0025] Please see Figures 2-3 In this embodiment, the lifting assembly includes a cylinder 7, the output end of the cylinder 7 is fixedly connected to a rod 8, the bottom end of the rod 8 extends to the top of the lifting seat 3, the rod 8 and the lifting seat 3 are fixedly connected by bolts, when the cylinder 7 drives the rod 8 to move, the rod 8 drives the lifting seat 3 to move up and down inside the water tank seat 1, and air supply assemblies are fixedly connected to both sides of the lifting assembly, the air supply assembly includes an air pump 9, the output end of the air pump 9 is fixedly connected to a connecting pipe 10, and the other end of the connecting pipe 10 is fixedly connected to the battery detection housing 5. When the air supply assembly is running, the air pump 9 inputs external air into the inside of the battery detection housing 5 through the connecting pipe 10;

[0026] Please see Figures 4-5 In this embodiment, a control panel 2 is fixedly connected to the front end of the water tank 1. The control panel 2 is electrically connected to both the lifting assembly and the air supply assembly. The lifting assembly and the air supply assembly can be controlled by the control panel 2 respectively. A displacement groove 12 is provided on the inner wall of the placement groove 4. The two sides of the clamping block 6 extend to the inner side of the displacement groove 12. When the clamping block 6 moves, the clamping block 6 is displaced inside the displacement groove 12. A bevel gear 15 is provided at one end of the transmission rod 14 and at the center of the lead screw A13. When the knob 11 drives the transmission rod 14 to rotate, the transmission rod 14 cooperates with the bevel gear 15 to drive the lead screw A13 to rotate. The lead screw A13 is a double-threaded lead screw. The threads at both ends of the lead screw A13 are symmetrical to each other. The lead screw A13 meshes with the two clamping blocks 6.

[0027] During operation, the battery test housing 5 to be tested is placed in the placement slot 4 outside the lifting seat 3. Then, by rotating the knob 11, the knob 11, in conjunction with the transmission rod 14, drives the lead screw A13 to rotate. The lead screw A13 is threadedly connected to two clamping blocks 6, so that under the rotation of the lead screw A13, the clamping blocks 6 move outside the lead screw A13 to clamp the battery test housing 5. This allows the device to clamp battery test housings 5 ​​of different sizes, improving the applicability of the device. Then, the connecting pipe 10 at the bottom of the air pump 9 is inserted into the battery test housing 5, and the connecting pipe 10 is fixed and sealed to the battery test housing 5 with bolts. Then, the power is turned on and the device is started. The cylinder 7 and the air rod 8 in the lifting assembly, in conjunction with the lifting seat 3, lower the battery test housing 5 into the water tank seat 1. Then, the air pump 9 inputs external air into the inside of the battery test housing 5 through the connecting pipe 10. The air tightness of the battery test housing 5 is tested based on the formation of water bubbles in the water tank seat 1.

[0028] Through the above steps, by rotating the knob 11, the knob 11, in conjunction with the transmission rod 14 and the lead screw A13, allows the clamping block 6 to clamp battery test housings 5 ​​of different sizes. Furthermore, the lifting seat 3 has four placement slots 4 on its outer side. This enables batch testing of battery test housings 5, improving the device's testing efficiency and solving the problem that existing new energy vehicle battery boxes vary in size, and the fixing mechanism of the testing mechanism is not easily adjustable for different new energy vehicle battery boxes, resulting in weak applicability.

[0029] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A battery box housing airtightness testing device, comprising a water tank base (1) and a battery testing housing (5), characterized in that: It also includes a lifting seat (3) movably connected to the inner side of the water tank seat (1), a lifting component fixedly connected to the top of the lifting seat (3), the lifting component is used to connect the lifting seat (3) and the water tank seat (1), the lifting seat (3) has a placement slot (4) at each of the four ends of the top surface of the lifting seat (3), and clamping blocks (6) are movably connected to both sides of the inner wall of the placement slot (4). The battery detection housing (5) is located inside the clamping block (6), and an adjustment component is provided at the center of the two clamping blocks (6), the adjustment component is used to connect the clamping block (6) and the placement slot (4). The adjustment assembly includes a knob (11), one end of which is provided with a transmission rod (14), and one end of the transmission rod (14) is rotatably connected to a lead screw A (13). Both ends of the lead screw A (13) extend to the outside of the clamping block (6) and are rotatably connected to the placement groove (4). When the knob (11) drives the transmission rod (14) to rotate, the transmission rod (14) transmits the power of the knob (11) to the lead screw A (13), so that the lead screw A (13) drives the two clamping blocks (6) to move inside the placement groove (4).

2. The battery box casing airtightness testing device according to claim 1, characterized in that: The lifting assembly includes a cylinder (7), the output end of the cylinder (7) is fixedly connected to a rod (8), the bottom end of the rod (8) extends to the top of the lifting seat (3), the connecting rod (8) and the lifting seat (3) are fixedly connected by bolts, when the cylinder (7) drives the connecting rod (8) to move, the connecting rod (8) drives the lifting seat (3) to move up and down inside the water tank seat (1).

3. The battery box casing airtightness testing device according to claim 2, characterized in that: Both sides of the lifting assembly are fixedly connected to air supply components. The air supply components include an air pump (9). The output end of the air pump (9) is fixedly connected to a connecting pipe (10). The other end of the connecting pipe (10) is fixedly connected to the battery detection housing (5). When the air supply assembly is running, the air pump (9) inputs external air into the inside of the battery detection housing (5) through the connecting pipe (10).

4. The battery box casing airtightness testing device according to claim 1, characterized in that: The front end of the water tank base (1) is fixedly connected to a control panel (2). The control panel (2) is electrically connected to the lifting component and the air supply component. The lifting component and the air supply component can be controlled by the control panel (2) respectively.

5. The battery box casing airtightness testing device according to claim 1, characterized in that: The inner wall of the placement groove (4) is provided with a displacement groove (12). The two sides of the clamping block (6) extend to the inner side of the displacement groove (12). When the clamping block (6) moves, the clamping block (6) is displaced inside the displacement groove (12).

6. The battery box casing airtightness testing device according to claim 1, characterized in that: A bevel gear (15) is provided at one end of the transmission rod (14) and at the center of the lead screw A (13). When the knob (11) drives the transmission rod (14) to rotate, the transmission rod (14) and the bevel gear (15) drive the lead screw A (13) to rotate.

7. The battery box casing airtightness testing device according to claim 1, characterized in that: The lead screw A (13) is a double-threaded lead screw. The threads at both ends of the lead screw A (13) are symmetrical to each other. The lead screw A (13) meshes with the two clamping blocks (6).

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