Airtightness detection device for a metal tank for a vehicle and the metal tank

Abstract

The utility model discloses a kind of air tightness detection device of metal box for automobile and the metal box, the device aims at solving the problem that current metal box for automobile adopts water tank to carry out sealing detection, it is difficult to adapt to the diversified detection needs of metal box.The device includes the water tank for carrying out submersion detection to metal box, the top end side of water tank is rotatably connected with detection plate, lock hook is installed on detection plate, the top end other side of water tank is installed with the lock catch corresponding to lock hook, upper sealing gasket is fixedly connected with the side of detection plate close to water tank, the other side of detection plate is fixedly connected with detection air pipe.The utility model sets up limiting sleeve in water tank, when detecting metal box of different size, open detection plate, limiting sleeve is taken out from water tank, then the position of guide plate and bottom plate is adjusted, then limiting sleeve is reloaded into water tank, to adapt to the diversified detection needs of metal box.

Description

Technical Field

[0001] This utility model belongs to the field of metal box airtightness testing technology, specifically relating to an airtightness testing device for automotive metal boxes and the metal box itself. Background Technology

[0002] In the current booming development of the new energy vehicle industry, the battery metal box, as a key component of the power battery system, directly affects the safety, stability, and reliability of new energy vehicles. The metal box, mainly welded from sheet metal, bears the heavy responsibility of housing the battery pack and providing physical protection against external environmental factors such as mechanical impact, dust, and moisture. Since the battery pack generates heat during charging and discharging, if the metal box is not well-sealed, outside air can enter, potentially causing uneven heat dissipation, leading to localized overheating, which can affect battery life and even cause safety accidents. Furthermore, if the electrical components inside the metal box come into contact with moisture, short circuits can easily occur, seriously threatening the safety of the vehicle and its occupants. Therefore, ensuring the metal box has excellent airtightness is crucial.

[0003] Existing automotive metal boxes use a submersion test to check their airtightness. This method involves completely immersing the battery box in water and then using equipment to perform an inflation test to determine if there is a leak. However, metal boxes are becoming increasingly diverse in specifications, with continuous innovation in size, shape, and structural design. Different sizes of water tanks need to be customized for different specifications of battery boxes, resulting in high costs. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an airtightness testing device for automotive metal boxes and the metal box itself. The device aims to solve the problem that the existing automotive metal boxes, which use water tanks for sealing testing, are difficult to adapt to the diverse testing needs of metal boxes.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides an airtightness testing device for automotive metal boxes. The device includes a water tank for submerging the metal box in water. A testing plate is rotatably connected to one side of the top of the water tank, and a locking hook is installed on the testing plate. A corresponding locking buckle is installed on the other side of the top of the water tank. An upper sealing gasket is fixedly connected to the side of the testing plate near the water tank, and a testing air pipe is fixedly connected to the other side of the testing plate. An avoidance opening corresponding to the testing air pipe is opened on the upper sealing gasket. A limiting sleeve is installed inside the water tank. A guide plate is adjustablely installed on the inner wall of the limiting sleeve. A base plate is adjustablely installed at the bottom of the limiting sleeve, and a lower sealing gasket is fixedly connected to the upper surface of the base plate.

[0008] Preferably, the limiting sleeve includes a sleeve body and a boss fixedly connected to the upper surface of the sleeve body, and the boss is fixedly connected to the upper surface of the water tank by a first screw.

[0009] Furthermore, handles are fixedly connected to both sides of the upper surface of the sleeve, and the handles are used to lift the limiting sleeve.

[0010] Furthermore, multiple U-shaped frames are fixedly connected to the inner walls of the front and rear sides and the inner walls of the left and right sides of the sleeve. The U-shaped frames have elongated holes, and the guide plate has multiple first through holes corresponding to the elongated holes. Bolts are fixedly connected to the first through holes and the elongated holes.

[0011] Furthermore, multiple second through holes are provided on both sides of the bottom end of the sleeve, and second mounting holes corresponding to the second through holes are provided on both sides of the base plate. Second screws are fixed in the internal threads of the second through holes and the second mounting holes.

[0012] Furthermore, the detection plate includes a pressure plate and a mounting rod that is rotatably connected to the water tank via a rotating shaft. The pressure plate is fixedly connected to the mounting rod, and a bent limiting block is fixedly connected to the end of the mounting rod away from the locking hook. The limiting block is used to support the detection plate as it opens around the rotating shaft.

[0013] Furthermore, the top of the guide plate is chamfered, and a gap is left between the bottom of the guide plate and the inner bottom wall of the water tank.

[0014] Furthermore, a metal box includes a box body with openings on both sides. The metal box is tested for water immersion using the airtightness testing device for automotive metal boxes described above.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. When using this utility model, the metal box is immersed in water in the limiting sleeve. The box is placed in the middle by multiple guide plates on the side. At this time, the bottom of the box is in contact with the lower sealing gasket. Then the detection plate is closed, so that the upper sealing gasket is pressed against the top of the box. Then the lock and hook are used to lock and fix it, sealing the openings at both ends of the box. Then the sealing test is carried out through the detection air pipe connected to the external detection inflation equipment. It is very convenient to use.

[0018] 2. This utility model sets a limiting sleeve inside the water tank. When testing metal boxes of different sizes, the detection plate is opened, the limiting sleeve is removed from the water tank, the position of the guide plate and the bottom plate are adjusted, and then the limiting sleeve is reinstalled into the water tank. Thus, the guide plate guides the sides of metal boxes of different sizes, and the bottom plate supports the bottom of metal boxes of different heights, adapting to the diverse testing needs of metal boxes. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the left-side structure of this utility model.

[0021] Figure 3 This is a top view of the structure of this utility model.

[0022] Figure 4 This is a front view structural diagram of this utility model.

[0023] Figure 5 This is a schematic diagram of the left-side cross-sectional structure of this utility model.

[0024] Figure 6 This is a schematic diagram of the installation structure of the guide plate of this utility model.

[0025] Figure 7 This is a schematic diagram of the installation structure of the base plate of this utility model.

[0026] The markings in the attached diagram are as follows: 1. Water tank; 2. Detection plate; 3. Locking hook; 4. Locking buckle; 5. Upper sealing gasket; 6. Detection air pipe; 7. Clearance opening; 8. Limiting sleeve; 9. Guide plate; 10. Base plate; 11. Lower sealing gasket; 201. Pressure plate; 202. Rotating shaft; 203. Mounting rod; 204. Limiting block; 801. Sleeve body; 802. Boss; 803. First screw; 804. Handle; 8011. U-shaped frame; 8012. Long hole; 8013. Second through hole; 901. First through hole; 902. Bolt; 903. Chamfer; 1001. Second mounting hole; 1002. Second screw; 111. Box body; 112. Opening. Detailed Implementation

[0027] This specific embodiment discloses an airtightness testing device for a metal box used in automobiles and the metal box itself, as shown in the schematic diagram below. Figures 1-7As shown, the device includes a water tank 1 for submersion testing of a metal box. A detection plate 2 is rotatably connected to one side of the top of the water tank 1. A locking hook 3 is installed on the detection plate 2. A locking buckle 4 corresponding to the locking hook 3 is installed on the other side of the top of the water tank 1. The locking buckle 4 can lock the detection plate 2 with the locking hook 3. An upper sealing gasket 5 is fixedly connected to the side of the detection plate 2 near the water tank 1. A detection air pipe 6 is fixedly connected to the other side of the detection plate 2. The detection air pipe 6 is located in the middle of the detection plate 2. The other end of the detection air pipe 6 is connected to an external detection inflation device. An avoidance opening 7 corresponding to the detection air pipe 6 is opened on the upper sealing gasket 5. A limiting sleeve 8 is installed inside the water tank 1. A guide plate 9 is adjustablely installed on the inner wall of the limiting sleeve 8. A bottom plate 10 is adjustablely installed at the bottom end of the limiting sleeve 8. The limiting sleeve 8 has openings at both ends. The bottom plate 10 is smaller than the inner wall of the limiting sleeve 8. A lower sealing gasket 11 is fixedly connected to the upper surface of the bottom plate 10.

[0028] In order to fix the limiting sleeve 8, such as Figure 5 and Figure 6 As shown: In this embodiment, the limiting sleeve 8 includes a sleeve body 801 and a boss 802 fixedly connected to the upper surface of the sleeve body 801. The boss 802 is fixedly connected to the upper surface of the water tank 1 by a first screw 803. The limiting sleeve 8 can be disassembled by the first screw 803, making installation more convenient.

[0029] To facilitate lifting the limiting sleeve 8, as shown in Figure 6: In this embodiment, handles 804 are fixedly connected to both sides of the upper surface of the sleeve 801.

[0030] In order to adjust guide plate 9, such as Figure 6 and Figure 7 As shown: In this embodiment, multiple U-shaped frames 8011 are fixedly connected to the inner walls of the front and rear sides and the inner walls of the left and right sides of the sleeve 801. The number of vertical columns of the U-shaped frames 8011 is the same as the number of guide plates 9, with two in each column. The U-shaped frames 8011 are provided with elongated holes 8012. The guide plates 9 are provided with multiple first through holes 901 corresponding to the elongated holes 8012. Bolts 902 are fixedly connected to the first through holes 901 and the elongated holes 8012. When adjusting, the bolts 902 are loosened, and then the distance between the guide plate 9 and the inner wall of the limiting sleeve 8 is measured and then tightened.

[0031] In order to adjust the height of the base plate 10, such as Figure 6 and Figure 7As shown: In this embodiment, multiple second through holes 8013 are provided on both sides of the bottom end of the sleeve 801. The second through holes 8013 are arranged in two rows, with multiple holes in each row along the length of the sleeve 801. Second mounting holes 1001 corresponding to the second through holes 8013 are provided on both sides of the base plate 10. Second screws 1002 are fixed to the internal threads of the second through holes 8013 and the second mounting holes 1001. When adjusting, the second screws 1002 are unscrewed, and then the base plate 10 is moved upward to re-fix it.

[0032] like Figure 1 and Figure 4 As shown: In this embodiment, the detection plate 2 includes a pressure plate 201 and an installation rod 203 rotatably connected to the water tank 1 via a rotating shaft 202. The pressure plate 201 and the installation rod 203 are fixedly connected. A bent limiting block 204 is fixedly connected to one end of the installation rod 203 away from the locking hook 3. The limiting block 204 is used to support the detection plate 2 when it is opened around the rotating shaft 202. After the detection is completed, the detection plate 2 is opened to an inclined state around the rotating shaft 202. At this time, the limiting block 204 can provide support to prevent it from tipping over.

[0033] like Figure 2 and Figure 6 As shown: In this embodiment, the top of the guide plate 9 is chamfered 903, and there is a gap between the bottom of the guide plate 9 and the inner bottom wall of the water tank 1; in this way, the bottom plate 10 has sufficient room for movement, and when the metal box 111 is placed in the water of the limiting sleeve 8, it is guided by the chamfer 903 to facilitate placement.

[0034] Working principle: During use, the metal box body 111 is immersed in water in the limiting sleeve 8. The multiple guide plates 9 on the side guide the body 111 to the middle. At this time, the bottom of the body 111 contacts the lower sealing gasket 11. Then, the detection plate 2 is closed, so that the upper sealing gasket 5 is pressed against the top of the body 111. Then, the locking buckle 4 and the locking hook 3 are used to lock and fix it, sealing the openings 112 at both ends of the body 111. Then, the sealing test is performed through the detection air pipe 6 connected to the external detection air filling equipment. When testing metal boxes of different sizes, the detection plate 2 is opened, the limiting sleeve 8 is taken out from the water tank 1, and then the positions of the guide plate 9 and the bottom plate 10 are adjusted. Then, the limiting sleeve 8 is put back into the water tank 1. Thus, the guide plate 9 guides the sides of metal boxes of different sizes, and the bottom plate 10 supports the bottom of metal boxes of different heights, adapting to the diverse testing needs of metal boxes.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An airtightness testing device for a metal box used in automobiles, the device comprising a water tank (1) for performing a submersion test on the metal box, characterized in that: A detection plate (2) is rotatably connected to one side of the top of the water tank (1). A locking hook (3) is installed on the detection plate (2). A lock buckle (4) corresponding to the locking hook (3) is installed on the other side of the top of the water tank (1). An upper sealing gasket (5) is fixedly connected to one side of the detection plate (2) near the water tank (1). A detection air pipe (6) is fixedly connected to the other side of the detection plate (2). An avoidance opening (7) corresponding to the detection air pipe (6) is opened on the upper sealing gasket (5). A limiting sleeve (8) is installed inside the water tank (1). A guide plate (9) is adjustablely installed on the inner wall of the limiting sleeve (8). A bottom plate (10) is adjustablely installed at the bottom end of the limiting sleeve (8). A lower sealing gasket (11) is fixedly connected to the upper surface of the bottom plate (10).

2. The airtightness testing device for automotive metal boxes according to claim 1, characterized in that, The limiting sleeve (8) includes a sleeve body (801) and a boss (802) fixedly connected to the upper surface of the sleeve body (801). The boss (802) is fixedly connected to the upper surface of the water tank (1) by a first screw (803).

3. The airtightness testing device for automotive metal boxes according to claim 2, characterized in that, Handles (804) are fixedly connected to both sides of the upper surface of the sleeve (801), and the handles (804) are used to lift the limiting sleeve (8).

4. The airtightness testing device for automotive metal boxes according to claim 3, characterized in that, Multiple U-shaped frames (8011) are fixedly connected to the inner walls of the front and rear sides and the inner walls of the left and right sides of the sleeve (801). The U-shaped frames (8011) are provided with elongated holes (8012). The guide plate (9) is provided with multiple first through holes (901) corresponding to the elongated holes (8012). Bolts (902) are fixedly connected to the first through holes (901) and the elongated holes (8012).

5. The airtightness testing device for automotive metal boxes according to claim 4, characterized in that, Multiple second through holes (8013) are provided on both sides of the bottom end of the sleeve (801), and second mounting holes (1001) corresponding to the second through holes (8013) are provided on both sides of the base plate (10). Second screws (1002) are fixed in the internal threads of the second through holes (8013) and the second mounting holes (1001).

6. The airtightness testing device for automotive metal boxes according to claim 1, characterized in that, The detection plate (2) includes a pressure plate (201) and an installation rod (203) rotatably connected to the water tank (1) via a rotating shaft (202). The pressure plate (201) is fixedly connected to the installation rod (203). A bent limiting block (204) is fixedly connected to one end of the installation rod (203) away from the locking hook (3). The limiting block (204) is used to support the detection plate (2) when it is opened around the rotating shaft (202).

7. The airtightness testing device for automotive metal boxes according to claim 6, characterized in that, The top of the guide plate (9) is chamfered (903), and there is a gap between the bottom of the guide plate (9) and the inner bottom wall of the water tank (1).

8. A metal box, comprising a box body (111), wherein openings (112) are provided on both sides of the box body (111), characterized in that, The metal box is subjected to a water immersion test using the airtightness testing device for automotive metal boxes as described in any one of claims 1-7.

Images