Top cover piece water detection equipment

Abstract

The utility model discloses a top cover plate water detection device, which belongs to the technical field of top cover plate air tightness detection and comprises a workbench body, and a jig bearing table is arranged above the workbench body. The top cover plate airtightness detection device is characterized in that a water tank is embedded in the upper end face of the workbench body, a high-pressure control gas circuit assembly and a water detection bearing mechanism are arranged on the upper end face, located on one side of the water tank, of the workbench body, and the water detection bearing mechanism is fixed to the workbench; the jig bearing table is connected with the connecting rod mechanism through a bearing table connecting piece to move. And the air inlet of the air tightness detection jig is communicated with the air outlet of the high-pressure control air path assembly through a joint and an air guide pipe. The beneficial effects of the utility model are that detection analysis is carried out by adopting a water detection mode, immersion and taking out of the jig bearing platform are realized, and the requirements of detection and replacement are met.

Description

Technical field:

[0001] The utility model belongs to the technical field of air tightness detection of top cover sheets, and more specifically relates to a water detection device for top cover sheets. Background technology:

[0002] At present, the helium inspection of battery top cover plates mainly uses helium as a tracer gas. The helium inspection fixture is evacuated and then helium is filled into the workpiece. Then, the helium leak detector can quickly and accurately determine the leakage of the workpiece with high precision. Basic operation: The operator places the workpiece in a vacuum box, and the vacuum box and the workpiece are automatically sealed. The system can automatically complete the entire process of large leak detection, vacuuming and helium filling, leak detection, and recycling. The production cycle is fast and the leak detection accuracy is high. However, the product was detected to be unqualified many times during the helium inspection process. After eliminating the reasons for the unqualified products. After investigating the reasons, it was found that there are many holes in the structure of the top cover plate and the material strength is relatively low. The existence of pressure will cause it to have slight deformation, resulting in leakage, making the detection results inaccurate, seriously affecting the efficiency of helium inspection, and not conducive to reducing the production and manufacturing costs of new energy battery cover plates. In the new energy industry, in the production and manufacturing of battery top cover plates, helium inspection is usually used for air tightness testing of the top cover plate. This method is a vacuum negative pressure state; such as:

[0003] The national utility model patent with patent number 202223056459.2 discloses a helium inspection fixture for new energy battery cover, which solves the above problems very well. Subsequently, the company further developed another generation of helium inspection fixture for new energy battery cover, in which the first sealing ring, the second sealing ring and the third sealing ring are arranged in sequence from the outside to the inside between the lower cavity and the upper cavity. The utility model has the characteristics of strong structural reliability, good air tightness, low failure rate, high detection efficiency, etc., which reduces the error rate of helium detection of new energy battery cover and improves the accuracy and operation efficiency of helium detection.

[0004] However, this design has certain defects. If a leak occurs in the product, due to the helium detection method, the leak point of the product cannot be seen intuitively, and the cause of the leak cannot be determined. A special mass spectrometer is needed to detect helium. Utility model content:

[0005] In order to solve the above problems and overcome the shortcomings of the prior art, the utility model provides a top cover sheet water inspection device;

[0006] The first technical problem to be solved is: if a product leaks, due to the helium detection method, the leak point of the product cannot be seen intuitively, and the cause of the leak cannot be determined. A special mass spectrometer is needed to detect helium.

[0007] The specific technical solution of the utility model to solve the above technical problems is as follows: the water inspection device for the top cover sheet comprises a workbench body, a fixture bearing platform is arranged above the workbench body; an airtightness inspection fixture for detecting the airtightness of the top cover sheet is arranged on the fixture bearing platform, characterized in that: a water tank is embedded in the upper end surface of the workbench body, a high-pressure control air circuit component and a water inspection bearing mechanism are arranged on the upper end surface of the workbench body located on one side of the water tank, and the water inspection bearing mechanism is fixed on the workbench;

[0008] The water inspection bearing mechanism is composed of a bearing platform connecting piece connected to both sides of the fixture bearing platform, a nitrogen spring, a connecting plate and a support seat;

[0009] The nitrogen spring, connecting plate and supporting seat are combined into a connecting rod mechanism, and the fixture bearing platform is connected and moved with the connecting rod mechanism through the bearing platform connecting piece; the air inlet of the air tightness inspection fixture is connected with the air outlet of the high-pressure control air circuit assembly through a joint and an air guide pipe.

[0010] Furthermore, a faucet is provided on the upper end surface of the workbench body located on one side of the water tank.

[0011] Furthermore, the faucet is connected to a water source through a pipeline.

[0012] Furthermore, an illumination lamp is provided on the upper end surface of the workbench body located on one side of the water tank.

[0013] Furthermore, one end of the nitrogen spring is hinged to the connecting seat, and the other end of the nitrogen spring is hinged to the middle of the connecting plate; one end of the connecting plate is hinged to the supporting seat, and the other end of the connecting plate is rotatably connected to the bearing platform connecting piece.

[0014] Furthermore, the airtightness inspection jig is composed of a water inspection upper mold and a water inspection lower mold. The airtightness inspection jig is pressed onto the jig bearing platform through a jig pressure strip. The lower mold of the airtightness inspection jig is provided with an air inlet connector connected to the high-pressure air circuit.

[0015] Furthermore, the high-pressure control air circuit assembly includes a main pipeline joint connected to an external air source, the main pipeline joint is provided with a pressure gauge, an air circuit joint and an air relief valve through the pipeline, and the air circuit joint is connected to the air inlet joint of the water inspection lower mold through the pipeline.

[0016] The beneficial effects of the utility model are:

[0017] One advantage of the utility model is that it provides a high-pressure gas as a detection medium, adopts a water detection method for detection and analysis, puts a test fixture containing a leaking product into water, forms a positive pressure by adding high-pressure gas, and observes water bubbles to confirm the leaking point. Compared with helium detection, which requires a relatively expensive mass spectrometer to detect helium, the utility model has higher efficiency and lower cost, and is conducive to promotion;

[0018] One advantage of the utility model is that the fixture bearing platform is provided with a connecting rod mechanism composed of a nitrogen spring, a connecting plate, and a support seat through a bearing platform connector, so that the fixture bearing platform can be immersed and removed, meeting the needs of detection and replacement;

[0019] One advantage of the utility model is that an airtightness inspection jig is provided which is pressed onto a jig bearing platform through a jig pressure strip, and the water inspection function can be realized by using an existing helium inspection jig of a new energy battery cover, which is more practical. Description of the drawings:

[0020] Attached Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Attached Figure 2 This is a schematic diagram of the structure of the water detection bearing mechanism of the utility model; in the accompanying drawings:

[0022] 101. Workbench body; 102. Water tank; 103. Faucet; 104. Light; 105. Air relief valve; 106. Air circuit connector; 200. Water inspection bearing mechanism; 201. Jig bearing platform; 202. Nitrogen spring; 203. Bearing platform connector; 204. Connecting plate; 205. Support seat; 300. Air tightness inspection jig; 301. Jig pressure strip; 302. Water inspection upper mold; 303. Water inspection lower mold. Specific implementation method:

[0023] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "rear", "lower left", "upper right", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] Specific implementation of the utility model: the top cover sheet water inspection equipment comprises a workbench body 101, a fixture bearing platform 201 is arranged above the workbench body 101; an airtightness inspection fixture 300 for detecting the airtightness of the top cover sheet is arranged on the fixture bearing platform 201, characterized in that: a water tank 102 is embedded in the upper end surface of the workbench body 101, a high-pressure control gas circuit component and a water inspection bearing mechanism 200 are arranged on the upper end surface of the workbench body 101 on one side of the water tank 102, and the water inspection bearing mechanism 200 is fixed on the workbench;

[0025] The water inspection bearing mechanism 200 is composed of a bearing platform connector 203 connected to both sides of the fixture bearing platform 201, a nitrogen spring 202, a connecting plate 204 and a support seat 205;

[0026] The nitrogen spring 202, the connecting plate 204, and the supporting seat 205 are combined into a connecting rod mechanism, and the fixture support platform 201 is connected to the connecting rod mechanism for movement via the support platform connector 203; the air inlet of the air tightness test fixture 300 is connected to the air circuit connector 106 of the high-pressure control air circuit assembly via a connector and an air guide pipe.

[0027] Furthermore, a faucet 103 is provided on the upper end surface of the workbench body 101 located on one side of the water tank 102 .

[0028] Furthermore, the faucet 103 is connected to a water source through a pipeline.

[0029] Furthermore, an illuminating lamp 104 is provided on the upper end surface of the workbench body 101 located on one side of the water tank 102 .

[0030] Furthermore, one end of the nitrogen spring 202 is hinged to the connection seat, and the other end of the nitrogen spring 202 is hinged to the middle of the connection plate 204; one end of the connection plate 204 is hinged to the support seat 205, and the other end of the connection plate 204 is rotatably connected to the bearing platform connector 203.

[0031] Furthermore, the airtightness inspection jig 300 is composed of a water inspection upper mold 302 and a water inspection lower mold 303. The airtightness inspection jig 300 is pressed onto the jig support platform 201 through a jig pressure strip 301. The water inspection lower mold 303 of the airtightness inspection jig 300 is provided with an air inlet connector connected to the high-pressure air circuit.

[0032] Furthermore, the high-pressure control gas circuit assembly includes a main pipeline joint connected to an external gas source, and the main pipeline joint is provided with a pressure gauge, a gas circuit joint 106 and a relief valve 105 through a pipeline, and the gas circuit joint 106 is connected to the air inlet joint of the water inspection lower mold 303 through a pipeline.

[0033] It should be noted that the utility model is a top cover sheet water inspection device. When working,

[0034] In detail, the water tank 102 is fixed on the workbench body in an embedded manner, filled with water through the faucet 103, and a drain outlet is set at the bottom; in order to enhance the lighting effect at the detection position, an illuminating lamp 104 is used to assist in supplementary lighting; the high-pressure control air circuit assembly includes a main pipeline joint connected to the external air source, and the main pipeline joint is provided with a pressure gauge, an air circuit joint 106 and an air relief valve 105 through the pipeline. The air circuit joint 106 is connected to the air inlet joint of the water inspection lower mold 303 through the pipeline. The high-pressure gas of the high-pressure control air circuit assembly is the detection medium for the water inspection test. Positive pressure gas is introduced for detection. The pressure gauge detects the intake pressure. After the test, the air circuit is controlled by the air relief valve 105 to remove the internal high pressure of the air tightness inspection fixture 300.

[0035] In detail, when the nitrogen spring 202 is extended, the jig carrier 201 is pushed out of the water tank through the connecting rod principle of the connecting rod mechanism to replace the product. When the nitrogen spring 202 is retracted, the jig carrier 201 is immersed in the water tank, so that the water in the water tank 102 covers the air tightness inspection jig 300.

[0036] As a preferred embodiment of the utility model, an airtightness inspection jig 300 of the prior art is adopted. The airtightness inspection jig 300 is designed and manufactured accordingly according to the product appearance by upper and lower molds. The difference is that the airtightness inspection jig 300 is pressed onto the jig carrier 201 through a jig pressure strip 301; the water inspection lower mold 303 of the airtightness inspection jig 300 is provided with an air inlet connector connected to the high-pressure gas circuit for ventilation detection, and the water inspection upper mold 302 is in an air-avoiding detection position for observing the leakage point, and the valve of the main pipeline joint is slowly opened. High-pressure gas is passed into the water inspection upper mold 302 and the water inspection lower mold 303 of the airtightness inspection jig 300 to begin observing whether bubbles appear.

[0037] After the observation is completed, the high-pressure gas circuit is closed, and the pressure is released through the air release valve 105 to discharge the high-pressure gas in the fixture. Then, the fixture support platform 201 is pulled by the nitrogen spring 202 to pull the airtightness inspection fixture 300 out of the water tank 102.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A water inspection device for a top cover sheet, comprising a workbench body (101), a jig bearing platform (201) being arranged above the workbench body (101); an airtightness inspection jig (300) for inspecting the airtightness of the top cover sheet being arranged on the jig bearing platform (201), characterized in that: A water tank (102) is embedded in the upper end surface of the workbench body (101); a high-pressure control air circuit component and a water detection bearing mechanism (200) are arranged on the upper end surface of the workbench body (101) located on one side of the water tank (102); and the water detection bearing mechanism (200) is fixed on the workbench; The water inspection bearing mechanism (200) is composed of a bearing platform connecting piece (203) connected to both sides of the fixture bearing platform (201), a nitrogen spring (202), a connecting plate (204) and a support seat (205); The nitrogen spring (202), the connecting plate (204), and the supporting seat (205) are combined into a connecting rod mechanism, and the fixture bearing platform (201) is connected to the connecting rod mechanism for movement via the bearing platform connecting piece (203); the air inlet of the air tightness inspection fixture (300) is connected to the air circuit connector (106) of the high-pressure control air circuit assembly via a connector and an air guide pipe.

2. The top cover sheet water inspection device according to claim 1 is characterized in that A faucet (103) is also provided on the upper end surface of the workbench body (101) located on one side of the water tank (102).

3. The top cover sheet water inspection device according to claim 2 is characterized in that The faucet (103) is connected to a water source via a pipeline.

4. The top cover sheet water inspection device according to claim 1, characterized in that An illuminating lamp (104) is provided on the upper end surface of the workbench body (101) located on one side of the water tank (102).

5. The top cover sheet water inspection device according to claim 1, characterized in that One end of the nitrogen spring (202) is hinged to the connection seat, and the other end of the nitrogen spring (202) is hinged to the middle part of the connection plate (204); one end of the connection plate (204) is hinged to the support seat (205), and the other end of the connection plate (204) is rotatably connected to the bearing platform connection piece (203).

6. The top cover sheet water inspection device according to claim 1, characterized in that The airtightness inspection jig (300) is composed of a water-tightness inspection upper mold (302) and a water-tightness inspection lower mold (303). The airtightness inspection jig (300) is press-fitted onto a jig bearing platform (201) via a jig pressure strip (301). The water-tightness inspection lower mold (303) of the airtightness inspection jig (300) is provided with an air inlet connector connected to a high-pressure air circuit.

7. The top cover sheet water inspection device according to claim 1, characterized in that The high-pressure control gas circuit assembly comprises a main pipeline joint connected to an external gas source, the main pipeline joint is provided with a pressure gauge, a gas circuit joint (106) and a relief valve (105) through a pipeline, and the gas circuit joint (106) is connected to the air inlet joint of the water inspection lower mold (303) through a pipeline.

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