A new energy automobile battery shell airtightness detection device

Abstract

The utility model discloses a new energy automobile battery case's air tightness detection device relates to detection device technical field, including work table, mount, fixed establishment and detection mechanism, and the top fixed connection of work table has mount, and fixed establishment sets up on work table for positioning battery case, and detection mechanism sets up on mount for detecting battery case sealing property. The utility model discloses the setting mode of fixed establishment and detection mechanism cooperation, through fixed establishment can position battery case to the sealing property detection of battery case through detection mechanism can also be sealed simultaneously, and the sealing plate of sealed battery case can be replaced fast at any time, so that the sealing property detection of different specifications battery case is carried out, so that when facing different specifications battery case, need not because of the mismatch of sealing structure and carry out the tedious replacement, greatly improved the versatility and efficiency of detection.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to a device for testing the airtightness of a new energy vehicle battery casing. Background Technology

[0002] With the continuous development of social productivity, the increasing demands of the people, and the strengthening of environmental protection, the market share of electric vehicles is constantly expanding. As a result, the demand for battery module housings in electric vehicles is also increasing. The service life of the housing determines the service life of the battery module and affects the overall lifespan of the electric vehicle. Therefore, airtightness testing is an important process for inspecting the welding quality of battery module housings.

[0003] When testing existing battery casings, a sealing plate is needed to seal the battery casing. However, different sealing blocks need to be replaced when testing battery casings of different sizes. The sealing blocks are usually fixed with bolts and other fasteners. This not only increases the cost and time of testing, but also makes the operation cumbersome and inconvenient due to the frequent replacement of sealing blocks, reducing the efficiency and convenience of the testing work. Utility Model Content

[0004] The purpose of this invention is to provide an airtightness testing device for the battery casing of new energy vehicles, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing device for a new energy vehicle battery casing, comprising a workbench, a fixing mechanism, and a testing mechanism. A fixing frame is fixedly connected to the top of the workbench. The fixing mechanism is disposed on the workbench for positioning the battery casing. The testing mechanism is disposed on the fixing frame for testing the airtightness of the battery casing.

[0006] Preferably, the fixing mechanism includes:

[0007] A bidirectional screw is provided, and an adjustment groove is provided at the top of the worktable. The end of the bidirectional screw is rotatably connected to the inner wall of the adjustment groove.

[0008] A fixing plate is symmetrically arranged inside the adjusting groove, and the fixing plate and the screw form a lead screw drive.

[0009] Preferably, the testing organization includes:

[0010] A cylinder, which is fixedly mounted on the top of a mounting bracket;

[0011] The movable frame is connected to the output end of the cylinder via a transmission connection.

[0012] Mounting plate, which is fixedly connected to the bottom end of the movable frame;

[0013] A sealing plate, which is disposed at the bottom end of the mounting plate, is used to seal the battery casing;

[0014] A detection component, which is mounted on a mounting plate, is used to detect air pressure;

[0015] A positioning component, which is mounted on a mounting plate, is used for multi-point positioning of the sealing plate.

[0016] Preferably, the detection component includes:

[0017] A fan, which is fixedly installed on the top of the mounting plate;

[0018] A fixed pipe is fixedly connected to the output end of the fan, and a one-way valve is installed on the fixed pipe;

[0019] A connecting pipe is disposed inside the mounting plate. One end of the connecting pipe is fixedly connected to the fixing pipe, and the other end of the connecting pipe is fixedly connected to a pressure gauge.

[0020] Preferably, the mounting components include:

[0021] The sliding rod has symmetrical snap-fit ​​grooves at the bottom end of the mounting plate, and the end of the sliding rod is fixedly connected to the inner wall of the snap-fit ​​groove.

[0022] A snap-fit ​​rod is slidably inserted into a slide rod. The top of the sealing plate is provided with snap-fit ​​holes at equal intervals. One end of the snap-fit ​​rod is slidably inserted into the inner cavity of the snap-fit ​​hole.

[0023] A compression spring, which is sleeved on the outside of the slide rod.

[0024] Preferably, one end of the compression spring is fixedly connected to the snap-fit ​​rod, and the other end of the compression spring is slidably inserted into the inner cavity of the snap-fit ​​hole.

[0025] The technical effects and advantages of this utility model are as follows:

[0026] This utility model utilizes a combination of a fixing mechanism and a testing mechanism. The fixing mechanism can position the battery casing, while the testing mechanism can perform a sealing test on the battery casing. At the same time, the sealing plate of the sealed battery casing can be quickly replaced at any time, so as to perform sealing tests on battery casings of different specifications. This eliminates the need for cumbersome replacements due to incompatibility of sealing structures when dealing with battery casings of different specifications, greatly improving the versatility and efficiency of the test. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0028] Figure 2 This is a schematic diagram of the overall front internal structure of this utility model.

[0029] Figure 3 This is a schematic diagram of the internal structure of the mounting plate of this utility model.

[0030] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0031] In the diagram: 1. Workbench; 2. Fixing frame; 3. Fixing mechanism; 31. Double-acting screw; 32. Fixing plate; 4. Detection mechanism; 41. Cylinder; 42. Moving frame; 43. Mounting plate; 44. Sealing plate; 45. Detection assembly; 451. Fan; 452. Fixing pipe; 453. Connecting pipe; 454. Pressure gauge; 46. Positioning assembly; 461. Slide rod; 462. Clamping rod; 463. Compression spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] This utility model provides, for example Figures 1-2 The device shown is an airtightness testing device for a new energy vehicle battery casing, comprising a worktable 1, a fixed frame 2, a fixing mechanism 3, and a testing mechanism 4. The fixed frame 2 is fixedly connected to the top of the worktable 1. The fixing mechanism 3 is set on the worktable 1 for positioning the battery casing. The testing mechanism 4 is set on the fixed frame 2 for testing the airtightness of the battery casing. The fixed mechanism 3 can position the battery casing, and the testing mechanism 4 can test the airtightness of the battery casing while also allowing for quick replacement of the sealing plate 44 of the sealed battery casing. This enables airtightness testing of battery casings of different specifications, eliminating the need for cumbersome replacements due to incompatible sealing structures when dealing with battery casings of different specifications, greatly improving the versatility and efficiency of the testing.

[0035] Specifically, the fixing mechanism 3 includes a bidirectional screw 31 and a fixing plate 32. The top of the worktable 1 is provided with an adjustment groove. The end of the bidirectional screw 31 is rotatably inserted into the inner wall of the adjustment groove. The fixing plate 32 is symmetrically arranged inside the adjustment groove. The fixing plate 32 and the screw form a screw drive. The rotation of the bidirectional screw 31 can drive the two fixing plates 32 to move closer or further apart, thereby centered the battery case and facilitating positioning, thus achieving sealing detection.

[0036] Specifically, the testing mechanism 4 includes a cylinder 41, a moving frame 42, a mounting plate 43, a sealing plate 44, a testing component 45, and a positioning component 46. The cylinder 41 is fixedly installed on the top of the fixed frame 2; the output end of the cylinder 41 is connected to the moving frame 42 in a transmission manner; the mounting plate 43 is fixedly connected to the bottom of the moving frame 42; the sealing plate 44 is set at the bottom of the mounting plate 43 for sealing the battery casing; the testing component 45 is set on the mounting plate 43 for detecting air pressure; the positioning component 46 is set on the mounting plate 43 for multi-point positioning of the sealing plate 44. The cylinder 41 can drive the moving frame 42 to move the mounting plate 43 vertically, so that the sealing plate 44 can seal the battery casing. At this time, the testing component 45 can perform a sealing test on the battery casing, and the positioning component 46 can quickly replace the sealing plate 44 at any time to test battery casings of different specifications.

[0037] Example 2

[0038] Based on Example 1, such as Figures 3-4 As shown, the detection component 45 includes a fan 451, a fixed pipe 452, a connecting pipe 453, and a pressure gauge 454. The fan 451 is fixedly installed on the top of the mounting plate 43. The fixed pipe 452 is fixedly connected to the output end of the fan 451. A one-way valve is provided on the fixed pipe 452, and a sealing ring is fixedly connected to the bottom end of the fixed pipe 452. This ring is used to fit the air inlet slot opened in the sealing plate 44 during installation, thereby ensuring good overall sealing performance. The connecting pipe 453 is located inside the mounting plate 43. One end of the connecting pipe 453 is fixedly connected to the fixed pipe 452, and the other end of the connecting pipe 453 is fixedly connected to the pressure gauge 454. The fan 451 can pressurize the inside of the battery casing and stabilize the pressure for a period of time. The value of the pressure gauge 454 can be used to determine whether the sealing performance of the battery casing is good.

[0039] Furthermore, the positioning component 46 includes a slide rod 461, a snap-fit ​​rod 462, and a compression spring 463. The bottom end of the mounting plate 43 has symmetrically arranged snap-fit ​​grooves, and the end of the slide rod 461 is fixedly connected to the inner wall of the snap-fit ​​groove. The snap-fit ​​rod 462 is slidably inserted into the slide rod 461. The top end of the sealing plate 44 has equidistant snap-fit ​​holes, and one end of the snap-fit ​​rod 462 is slidably inserted into the inner cavity of the snap-fit ​​hole. The compression spring 463 is sleeved on the outside of the slide rod 461, one end of the compression spring 463 is fixedly connected to the snap-fit ​​rod 462, and the other end of the compression spring 463 is slidably inserted into the inner cavity of the snap-fit ​​hole. By pulling the snap-fit ​​rod 462, the sealing plate 44 can be quickly disassembled and assembled, improving the versatility and efficiency of the inspection and making it easy to use.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the airtightness of a battery casing for new energy vehicles, characterized in that, include: Workbench (1), with a fixed frame (2) fixedly connected to the top of the workbench (1); Fixing mechanism (3), which is set on the workbench (1) and is used to position the battery case; The testing mechanism (4), which is mounted on the fixing frame (2), is used to test the sealing performance of the battery casing. The testing mechanism (4) includes: Cylinder (41), the cylinder (41) is fixedly installed on the top of the fixing frame (2); The movable frame (42) is connected to the output end of the cylinder (41) via a transmission connection. Mounting plate (43), which is fixedly connected to the bottom end of the movable frame (42); A sealing plate (44) is disposed at the bottom end of the mounting plate (43) for sealing the battery casing; A detection component (45) is disposed on a mounting plate (43) for detecting air pressure; A positioning component (46), which is disposed on the mounting plate (43) for multi-point positioning of the sealing plate (44), the positioning component (46) comprising: The slide rod (461) has a snap-fit ​​groove symmetrically provided at the bottom end of the mounting plate (43), and the end of the slide rod (461) is fixedly connected to the inner wall of the snap-fit ​​groove; The snap-fit ​​rod (462) is slidably inserted into the slide rod (461). The top of the sealing plate (44) is provided with snap-fit ​​holes at equal intervals. One end of the snap-fit ​​rod (462) is slidably inserted into the inner cavity of the snap-fit ​​hole. A compression spring (463) is sleeved on the outside of the slide bar (461).

2. The airtightness testing device for a new energy vehicle battery casing according to claim 1, characterized in that, The fixing mechanism (3) includes: A bidirectional screw (31) is provided with an adjustment groove at the top of the worktable (1), and the end of the bidirectional screw (31) is rotatably inserted into the inner wall of the adjustment groove. The fixing plate (32) is symmetrically arranged inside the adjustment groove, and the fixing plate (32) and the screw form a screw drive.

3. The airtightness testing device for a new energy vehicle battery casing according to claim 1, characterized in that, The detection component (45) includes: A fan (451) is fixedly installed on the top of a mounting plate (43); A fixed pipe (452) is fixedly connected to the output end of the fan (451), and a one-way valve is provided on the fixed pipe (452); A connecting pipe (453) is disposed inside the mounting plate (43). One end of the connecting pipe (453) is fixedly connected to the fixing pipe (452), and the other end of the connecting pipe (453) is fixedly connected to a pressure gauge (454).

4. The airtightness testing device for a new energy vehicle battery casing according to claim 1, characterized in that, One end of the compression spring (463) is fixedly connected to the snap-fit ​​rod (462), and the other end of the compression spring (463) is slidably inserted into the inner cavity of the snap-fit ​​hole.

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