Tool for detecting air tightness of battery box

Abstract

The utility model discloses a tool for detecting the air tightness of a battery box. The tool comprises a large bottom plate; the lower mold plate is arranged in a circle in a surrounding mode, the lower mold plate is matched with the battery box, and the lower mold plate is welded to the large bottom plate through the bottom end face; the sealing foam is fixedly adhered along the top end surface of the lower template; and the rotary clamping air cylinders are mounted on the large bottom plate, are distributed on the periphery of the lower template, and are used for pressing and fixing the battery box. When the air tightness of the battery box is detected through external air tightness detection, the sealing foam on the lower template of the tool is attached to the battery box, so that the air tightness during detection is ensured, the accuracy of air tightness detection of the battery box is ensured, and a guarantee is provided for safe operation of an electric vehicle; moreover, the air cylinder is used for compressing and fixing the battery box, the use is convenient and fast, the disassembly and assembly time is short, and the requirements of rapid airtightness detection and large-batch delivery of the battery box are met.

Description

Technical Field

[0001] The utility model relates to a tool, in particular to a tool used for detecting the air tightness of a battery box. Background Art

[0002] Box air tightness testing is an important step to ensure safety and performance in electric vehicles or other battery-powered devices. The background technology involves the use of air tightness testing equipment, such as a pressure decay tester or an air tightness detection system, to measure the sealing performance of the battery box by applying pressure or vacuum. These tests are generally used to detect potential leaks or defects to ensure that the battery box can effectively prevent the intervention of the external environment and maintain internal pressure stability. Although there are various types of fixed tooling used for battery box air tightness testing on the market, there are some problems such as cumbersome operation and loose fit with the battery box, so it is impossible to ensure efficient and smooth air tightness testing of the battery box. Utility Model Content

[0003] In order to solve the deficiencies existing in the above-mentioned technology, the utility model provides a tool for air tightness detection of a battery box.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a tool for battery box air tightness detection, which includes:

[0005] Large base plate, which is the support plane for the battery box;

[0006] The lower template is arranged in a circle, the battery box is matched by the lower template, and the lower template is welded to the large bottom plate through the bottom end surface;

[0007] Sealing foam, the sealing foam is fixedly pasted along the top surface of the lower template;

[0008] The rotary clamping cylinder is installed on the large base plate and distributed around the lower template. The rotary clamping cylinder is used to press and fix the battery box.

[0009] Preferably, the large bottom plate is welded and fixed on a bottom bracket, and the bracket has a fork hole adapted for a forklift.

[0010] Preferably, a hand valve is installed on the large base plate, and the hand valve is adapted to the rotary clamping cylinder.

[0011] Preferably, a mounting groove adapted to the lower template is provided on the surface of the large base plate.

[0012] Preferably, the contact surface between the lower template and the large base plate is fully welded all around.

[0013] Preferably, the surface of the large base plate is further provided with a positioning groove, and the positioning groove is used for installation and positioning of the rotary clamping cylinder.

[0014] The utility model discloses a tool for battery box air tightness detection, which is used to detect the safety of battery boxes after production. When the battery box air tightness detection is involved in the external air tightness detection, the battery box is attached to the lower template and the sealing foam, which ensures the air tightness during the detection, ensures the accuracy of the battery box air tightness detection, and provides protection for the safe operation of the electric vehicle; and the battery box is fixed by a cylinder, which is convenient and quick to use, and the disassembly and assembly time is short, which meets the requirements of rapid air tightness detection of the battery box and large-scale delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 for Figure 1 Top view of the .

[0017] Figure 3 for Figure 1 Schematic diagram of the overall structure of the mid-to-large base plate.

[0018] Figure 4 It is a schematic diagram of the implementation status of the utility model.

[0019] In the figure: 1. bracket; 2. large base plate; 3. lower template; 4. sealing foam; 5. rotary clamping cylinder; 6. hand-turn valve; 7. battery box; 8. plug-in panel; 21. installation slot; 22. positioning slot. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] The utility model discloses a tool for detecting the air tightness of a battery box. The structure of the whole tool is as follows: Figure 1 and Figure 2 As shown, it includes: a bracket 1, a large bottom plate 2, a lower template 3, a sealing foam 4, a rotary clamping cylinder 5 and a hand-turned valve 6;

[0022] By welding the large bottom plate 2 to the bracket 1 at the bottom, a platform device is formed to provide a support platform for the placement of the battery box. The bracket 1 is used for support. At the same time, the bracket 1 has a fork hole adapted for a forklift, which can facilitate the subsequent use of a forklift to move the tooling device, so that the process location is not restricted. The bracket is welded at 90 degrees to ensure its verticality. After welding, the large bottom plate 2 is installed and its flatness is ensured.

[0023] The lower template 3 is designed to fit the contour of the battery box, and is welded and fixed on the large bottom plate 2 and arranged in a circle. The lower template 3 is specifically welded on the large bottom plate 2 through three positioning welds, and the contact surface between the lower template 3 and the large bottom plate 2 is fully welded around to ensure that there is no gap between the lower template and the large bottom plate.

[0024] A circle of sealing foam 4 is fixedly pasted on the top surface of the lower template 3, and the sealing foam 4 is evenly pasted on the top plane of the lower template to ensure that there is no air leakage during subsequent testing.

[0025] The rotary clamping cylinder 5 and the hand-turned valve 6 are both installed on the large base plate 2. When the air tightness of the battery box is tested, the battery box is placed upside down on the lower template 3 and in contact with the sealing foam 4. The rotary clamping cylinder 5 presses the battery box in the vertical direction to fix the positioned battery box. While the rotary clamping cylinder 5 presses the battery box, the sealing foam 4 is compressed and can better fit and contact the battery box, ensuring the air tightness during testing.

[0026] The hand-operated valve 6 is matched with the rotary clamping cylinder 5 to realize manual control of the loosening and pressing of the rotary clamping cylinder 5.

[0027] Preferably, in order to enable the rotary clamping cylinder 5 to uniformly press the battery box, rotary clamping cylinders 5 for pressing and fixing the battery box are distributed around the lower template 3. Figure 4 An implementation method of the tooling used for air tightness testing of battery boxes is demonstrated, with rotary clamping cylinders designed on the front and rear reference sides and the left and right reference sides of the tooling. As shown in the figure, 5 rotary clamping cylinders are evenly designed and installed on the left and right reference sides to ensure that the left and right sides of the box are evenly stressed; 6 rotary clamping cylinders are designed and installed on the front reference side, and 3 rotary clamping cylinders are designed and installed on the rear reference side. Since the front side of the battery box is a plug-in panel 8 with an arc, the lower template 3 forms a corner arc here, and the front reference side will also have more rotary clamping cylinders installed at the corner arcs on both sides to ensure that the battery box is more evenly stressed and facilitate subsequent air tightness testing.

[0028] like Figure 3 As shown, corresponding mounting holes are processed on the large base plate 2 for the installation of the hand valve 6 and the rotary clamping cylinder 5. All mounting holes on the large base plate 2 are processed as a whole machine to ensure the accuracy of the subsequent installation position. After the hand valve 6 and the rotary clamping cylinder 5 correspond to the mounting holes, they are locked with M8 screws.

[0029] In addition, two groove structures are provided on the large bottom plate 2, wherein the inner groove is a mounting groove 21 adapted to the lower template 3, which facilitates the rapid positioning and welding of the lower template 3. The outer groove is a positioning groove 22 for realizing the rapid installation and positioning of the rotary clamping cylinder 5, so that the mounting hole of the rotary clamping cylinder 5 can be more accurately positioned and processed.

[0030] Therefore, for the tooling for air tightness detection of the battery box disclosed in the utility model, the large bottom plate welding bracket is used as the support plane, and the lower template is used as the positioning reference. The positioning reference and the support plane are milled flat by the processing worker and fit each other, thereby ensuring the flatness of the box during air tightness detection. When used for air tightness detection of the battery box 7, the bottom of the battery box 7 after welding is facing upward, buckled on the lower template 3 and fit with the sealing foam 4 on the contact surface, and the rotary clamping cylinder 5 is pressed vertically downward after closing the hand valve 6, and the box is pressed. At this time, the battery box is pressed. After the plug-in panel 8 of the battery box is sealed with a sealing plate, the battery box is tested for air tightness, and the test is completed after no leaks are found. When the air tightness test is completed, the battery box needs to be disassembled. Just open the hand valve 1, and the rotary clamping cylinder will automatically loosen, so that the battery box can be removed conveniently and quickly.

[0031] The above implementation modes are not limitations of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the technical solution of the present invention also belong to the protection scope of the present invention.

Claims

1. A tool for battery box air tightness detection, characterized in that: It includes: A large base plate (2), the large base plate (2) being a support plane on which the battery box (7) is placed; A lower template (3), the lower template (3) is arranged in a circle, the lower template (3) matches the battery box (7), and the lower template (3) is welded to the large bottom plate (2) through the bottom end surface; Sealing foam (4), the sealing foam (4) is fixedly adhered along the top surface of the lower template (3); A rotary clamping cylinder (5) is installed on the large base plate (2) and distributed around the lower template (3). The rotary clamping cylinder (5) is used to press and fix the battery box.

2. The tooling for battery box air tightness detection according to claim 1, characterized in that: The large base plate (2) is welded and fixed on the bottom bracket (1), and the bracket (1) has a fork hole adapted for a forklift.

3. The tooling for battery box air tightness detection according to claim 1, characterized in that: A hand-operated valve (6) is also installed on the large base plate (2), and the hand-operated valve (6) is adapted to the rotary clamping cylinder (5).

4. The tooling for battery box air tightness detection according to claim 1 or 3, characterized in that: The plate surface of the large base plate (2) is provided with a mounting groove (21) adapted to fit the lower template (3).

5. The tooling for battery box air tightness detection according to claim 4, characterized in that: The contact surface between the lower template (3) and the large bottom plate (2) is fully welded all around.

6. The tooling for battery box air tightness detection according to claim 4, characterized in that: The plate surface of the large base plate (2) is also provided with a positioning groove (22), and the positioning groove (22) is used for installing and positioning the rotary clamping cylinder (5).

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