Energy storage battery pack lower box airtightness detection device

Abstract

This utility model discloses an airtightness testing device for the lower casing of an energy storage battery pack, belonging to the field of battery casing testing technology. It includes a testing body with a testing component inside. The testing component includes a hydraulic rod fixed to the top of the testing body, an upper mold fixedly connected to the bottom of a pressure plate, a lower mold attached to the side of the upper mold away from the pressure plate, a sealing ring fixedly connected to the side of the lower mold near the upper mold, and an air inlet pipe and an exhaust pipe on the outer wall of the lower mold. This airtightness testing device for the lower casing of an energy storage battery pack, through the hydraulic rod driving the pressure plate and the upper and lower molds to precisely fit together, can seal the lower casing of the battery pack placed inside the lower mold. The air inlet and exhaust pipes on the outer wall of the lower mold, and the sealing ring on the upper mold at the fitting point of the lower mold, effectively improve the airtightness between the upper and lower molds, thereby effectively testing the airtightness of the lower casing of the battery pack and improving the quality of the lower casing.

Description

Technical Field

[0001] This utility model belongs to the field of battery box testing technology, specifically, it relates to an airtightness testing device for the lower box of an energy storage battery pack. Background Technology

[0002] The battery casing is the outer shell of the battery pack, and its airtightness is directly related to the safety of the battery pack. If there is a leak in the battery casing, it will cause danger, and moisture, dust or other impurities in the external environment may enter the battery, leading to safety problems such as short circuit and leakage.

[0003] The existing method is to immerse the workpiece in water for testing and observe whether bubbles are generated. Although this method can meet the airtightness test effect in most cases, due to the influence of welding process or environment, the gaps between some welds are extremely small, and the bubbles generated will be small or not obvious. In this case, they cannot be accurately observed, which will lead to quality problems in the batteries produced in subsequent processing.

[0004] To address the aforementioned issues, this application proposes an airtightness detection device for the lower casing of an energy storage battery pack. Utility Model Content

[0005] In view of the problems in related technologies, this utility model proposes an airtightness detection device for the lower casing of an energy storage battery pack, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An airtightness testing device for the lower casing of an energy storage battery pack includes a testing body. A testing component is disposed inside the testing body. The testing component includes a hydraulic rod fixed to the top of the testing body. A protective plate is fixedly connected to the telescopic end of the hydraulic rod. A pressure plate is fixedly connected to the bottom of the protective plate. An upper mold is fixedly connected to the bottom of the pressure plate. A lower mold is attached to the side of the upper mold away from the pressure plate. A sealing ring is fixedly connected to the side of the lower mold near the upper mold. An air inlet pipe and an air outlet pipe are disposed on the outer wall of the lower mold.

[0008] Preferably, a positioning post is fixedly connected to the bottom of the pressure plate, and a positioning frame is fixedly connected to the top of the lower mold. The end of the positioning post away from the pressure plate is adapted to the inner sidewall of the positioning frame.

[0009] Preferably, a positioning frame is fixedly connected to the top of the lower mold, and a rubber pad is fixedly connected to the side of the positioning frame near the lower mold.

[0010] Preferably, a support frame is fixedly connected to the outer wall of the detection body, and a driving assembly is provided on the top of the support frame. The driving assembly includes a connecting frame fixed to the bottom of the lower mold, a connecting column is fixedly connected to the side of the connecting frame away from the lower mold, and a toothed plate is fixedly connected to the end of the connecting column away from the connecting frame.

[0011] Preferably, a slide rail is fixedly connected to the top of the support frame, a slide groove is provided on the top of the slide rail, and a threaded shaft is provided inside the slide rail, with the toothed plate meshing with the threaded shaft.

[0012] Preferably, a control panel is provided on the outer wall of the detection body.

[0013] In summary, the technical effects and advantages of this utility model are as follows: This energy storage battery pack lower casing airtightness testing device uses a hydraulic rod to drive the pressure plate and the upper mold to precisely fit with the lower mold, thereby sealing the battery pack lower casing placed inside the lower mold. Through the air inlet and exhaust pipes set on the outer wall of the lower mold, and the sealing ring set on the upper mold at the fitting point of the lower mold, the airtightness between the upper and lower molds can be effectively improved, thus effectively testing the airtightness of the battery pack lower casing and improving the quality of the battery pack lower casing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the upper mold and its related structures of this utility model;

[0016] Figure 3 This is a schematic diagram of the lower mold and related structures of this utility model;

[0017] Figure 4 This is a schematic diagram of the connecting frame and related structures of this utility model.

[0018] In the diagram: 1. Detection body; 2. Support frame; 3. Detection components; 301. Hydraulic rod; 302. Protective plate; 303. Pressure plate; 304. Upper mold; 305. Lower mold; 306. Positioning post; 307. Positioning frame; 308. Positioning bracket; 309. Rubber pad; 310. Sealing ring; 311. Air inlet pipe; 312. Exhaust pipe; 4. Drive components; 401. Connecting frame; 402. Connecting post; 403. Toothed plate; 404. Slide rail; 405. Slide groove; 5. Control panel. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 An airtightness testing device for the lower casing of an energy storage battery pack includes a testing body 1. A testing component 3 is disposed inside the testing body 1. The testing component 3 includes a hydraulic rod 301 fixed to the top of the testing body 1. A protective plate 302 is fixedly connected to the telescopic end of the hydraulic rod 301. A pressure plate 303 is fixedly connected to the bottom of the protective plate 302. An upper mold 304 is fixedly connected to the bottom of the pressure plate 303. A lower mold 305 is attached to the side of the upper mold 304 away from the pressure plate 303. A sealing ring 310 is fixedly connected to the side of the lower mold 305 near the upper mold 304. The outer wall of the lower mold 305 is provided with… It has an air inlet pipe 311 and an exhaust pipe 312. The hydraulic rod 301 set at the top of the detection body 1 drives the protective plate 302 and the pressure plate 303 to move up and down, thereby driving the upper mold 304 to move, so that the upper mold 304 and the lower mold 305 can be fitted together. A sealing ring 310 is set at the fitting point of the lower mold 305 and the upper mold 304 to make the upper mold 304 and the lower mold 305 fit tightly. Thus, the air tightness of the battery pack lower box set inside the lower mold 305 can be tested through the air inlet pipe 311 and the exhaust pipe 312 set on the outer wall of the lower mold 305.

[0021] Reference Figure 2 A positioning post 306 is fixedly connected to the bottom of the pressure plate 303, and a positioning frame 307 is fixedly connected to the top of the lower mold 305. The end of the positioning post 306 away from the pressure plate 303 is adapted to the inner side wall of the positioning frame 307. By adapting the positioning post 306 at the bottom of the pressure plate 303 to the positioning frame 307 at the top of the lower mold 305, the positioning post 306 is positioned inside the positioning frame 307 when the pressure plate 303 drives the upper mold 304 to move. This allows the positioning post 306 to be supported and limited inside the positioning frame 307, preventing excessive pressure between the upper mold 304 and the lower mold 305 from causing damage.

[0022] Reference Figure 2-3 A positioning frame 308 is fixedly connected to the top of the lower mold 305. A rubber pad 309 is fixedly connected to the side of the positioning frame 308 near the lower mold 305. The positioning frame 308 and the rubber pad 309 on the top of the lower mold 305 limit the outer wall of the upper mold 304. When the upper mold 304 moves downward, the positioning post 306 enters the interior of the positioning frame 307 for limitation under the limitation of the rubber pad 309, so that the upper mold 304 and the lower mold 305 are aligned, thereby better sealing the upper mold 304 and the lower mold 305, and then performing airtightness testing on the lower casing of the battery pack.

[0023] Reference Figure 1 , Figure 2 and Figure 4A support frame 2 is fixedly connected to the outer wall of the detection body 1. A drive assembly 4 is provided on the top of the support frame 2. The drive assembly 4 includes a connecting frame 401 fixed to the bottom of the lower mold 305. A connecting column 402 is fixedly connected to the side of the connecting frame 401 away from the lower mold 305. A toothed plate 403 is fixedly connected to the end of the connecting column 402 away from the connecting frame 401. The lower mold 305 can be moved stably by the connecting frame 401 fixedly installed at the bottom of the lower mold 305.

[0024] Reference Figure 1-4 A slide rail 404 is fixedly connected to the top of the support frame 2. A slide groove 405 is provided on the top of the slide rail 404. A threaded shaft is provided inside the slide rail 404. The toothed plate 403 meshes with the threaded shaft. The slide rail 404 installed on the top of the support frame 2 is connected to the connecting frame 401, so that the connecting frame 401 drives the lower mold 305 to move and be conveyed along the slide rail 404. The threaded shaft provided inside the slide rail 404 is adapted to the toothed plate 403, so that the connecting frame 401 can be moved by the threaded shaft.

[0025] Reference Figure 1 The outer wall of the detection body 1 is equipped with a control panel 5. The hydraulic rod 301, air inlet pipe 311, exhaust pipe 312 and threaded shaft are controlled by the control panel 5 on the outer wall of the detection body 1, so as to facilitate the airtightness test of the battery pack lower box.

[0026] Working principle: By placing the lower battery pack housing inside the lower mold 305, the threaded rod rotates under the control of the control panel 5, thereby moving the connecting frame 401 and the lower mold 305. The lower mold 305 moves to directly below the upper mold 304. The hydraulic rod 301 then moves the pressure plate 303 and the upper mold 304 up and down. Under the limiting position of the positioning frame 308 and the rubber pad 309, the upper mold 304 and the lower mold 305 are aligned. The positioning post 306 enters the interior of the positioning frame 307 for limiting, so that the upper mold 304 and the lower mold 305 fit tightly together. Under the action of the sealing ring 310, the interior of the upper mold 304 and the lower mold 305 is sealed. After the exhaust pipe 312 evacuates the interior of the upper mold 304 and the lower mold 305, the air inlet pipe 311 inflates the interior of the lower housing, thereby performing an airtightness test on the lower battery pack housing inside the lower mold 305 through the air inlet pipe 311 and the exhaust pipe 312.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 the lower casing of an energy storage battery pack, comprising a detection body (1), characterized in that, The detection body (1) is equipped with a detection component (3). The detection component (3) includes a hydraulic rod (301) fixed to the top of the detection body (1). A protective plate (302) is fixedly connected to the telescopic end of the hydraulic rod (301). A pressure plate (303) is fixedly connected to the bottom of the protective plate (302). An upper mold (304) is fixedly connected to the bottom of the pressure plate (303). A lower mold (305) is attached to the side of the upper mold (304) away from the pressure plate (303). A sealing ring (310) is fixedly connected to the side of the lower mold (305) close to the upper mold (304). An air inlet pipe (311) and an exhaust pipe (312) are provided on the outer side wall of the lower mold (305).

2. The airtightness detection device for the lower casing of an energy storage battery pack according to claim 1, characterized in that, The bottom of the pressure plate (303) is fixedly connected to a positioning post (306), and the top of the lower mold (305) is fixedly connected to a positioning frame (307). The end of the positioning post (306) away from the pressure plate (303) is adapted to the inner sidewall of the positioning frame (307).

3. The airtightness detection device for the lower casing of an energy storage battery pack according to claim 1, characterized in that, A positioning frame (308) is fixedly connected to the top of the lower mold (305), and a rubber pad (309) is fixedly connected to the side of the positioning frame (308) near the lower mold (305).

4. The airtightness detection device for the lower casing of an energy storage battery pack according to claim 1, characterized in that, The outer wall of the detection body (1) is fixedly connected to a support frame (2), and a drive assembly (4) is provided on the top of the support frame (2). The drive assembly (4) includes a connecting frame (401) fixed to the bottom of the lower mold (305). A connecting column (402) is fixedly connected to the side of the connecting frame (401) away from the lower mold (305), and a toothed plate (403) is fixedly connected to the end of the connecting column (402) away from the connecting frame (401).

5. The airtightness detection device for the lower casing of an energy storage battery pack according to claim 4, characterized in that, The top of the support frame (2) is fixedly connected to a slide rail (404), the top of the slide rail (404) is provided with a slide groove (405), the slide rail (404) is provided with a threaded shaft inside, and the toothed plate (403) meshes with the threaded shaft.

6. The airtightness detection device for the lower casing of an energy storage battery pack according to claim 1, characterized in that, The outer wall of the detection body (1) is provided with a control panel (5).

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