An air tightness detection partition device

Abstract

The utility model relates to battery detection technical field, concretely is airtightness detection partition device, including operation platform and setting detection assembly in operation platform top, detection assembly is by the material piece and detection piece is composed, wherein, detection piece includes fixed plate and fixed frame fixed in operation platform top, elevating plate of installing in fixed plate top and can adjust height, U -shaped frame fixed in elevating plate top, the rotating plate of rotation installation in U -shaped frame in, the connecting plate of rotation installation in rotating plate top, the present application adopts the way of partition detection to speed up detection efficiency, if appearing leakage in detection process, helium seeps out and passes through suction gun and inhales helium mass spectrum leak detector, at this moment, detection module made of suction gun is pulled down one by one, can position leakage area, and through hand holds suction gun and detects, convenient accurate positioning leakage point, and can carry out detection to the surface of shell multiple area shell simultaneously, position multiple leakage points.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, specifically to an airtightness testing partition device. Background Technology

[0002] In the production process of power batteries, in order to ensure the safety of the batteries, it is necessary to conduct airtightness tests on the battery casing to prevent external moisture and dust from entering the battery module. Common airtightness testing methods (such as the bubble observation method) involve fastening the power battery casing onto a special testing mold, injecting high-pressure gas into the casing, spraying or pouring liquid on the mold and casing surface, and then visually observing whether bubbles are generated on the casing surface to determine whether there is a leak.

[0003] However, this detection method relies heavily on the operator's experience and attention during use. Furthermore, when there are tiny leaks on the shell surface, the leaking gas flow rate is small, resulting in a small number of bubbles that are generated slowly and are not easily detected by the naked eye. This makes it difficult to effectively detect such tiny leaks. In other words, this detection method has many drawbacks, such as insufficient detection sensitivity and large errors, and needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide an airtightness detection zone device to solve the problems of insufficient sensitivity, large error, and long time consumption of the bubble observation method mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing partition device, comprising an operating table and a testing component disposed on the top of the operating table, wherein the testing component consists of a material placement component and a testing component, wherein:

[0006] The testing component includes a fixing plate and a fixing frame fixed to the top of the operating table;

[0007] A lifting plate installed on the top of the fixed plate and capable of height adjustment;

[0008] A U-shaped frame fixed to the top of the lifting plate;

[0009] Rotate the rotating plate installed in the U-shaped frame;

[0010] Rotate the connecting plate mounted on the top of the rotating plate;

[0011] Several detection modules are disposed on the rotating plate and the connecting plate, and the detection modules are used to perform airtightness detection on the shell to be tested.

[0012] A threaded post is provided at the top of the connecting plate and is adapted to the fixing frame;

[0013] The material placement component includes a positioning frame for placing the housing to be tested, and the positioning frame is disposed between the fixing plate and the fixing frame;

[0014] Several locking screws are set on the positioning frame and used to fix the housing to be tested;

[0015] In this process, by controlling the rotation of the rotating plate and the connecting plate, the detection surfaces of several detection modules are made to face the shell to be tested, thereby performing airtightness testing on the inflated shell.

[0016] Preferably, a cross-shaped reinforcing plate is installed at the bottom of the positioning frame to prevent deformation.

[0017] Preferably, the bottom end of the cross-shaped reinforcing plate is equipped with a telescopic connecting rod to ensure its vertical lifting movement.

[0018] Preferably, the top of the operating table is provided with a positioning groove that engages with the positioning frame.

[0019] Preferably, a limiting baffle is fixed on the U-shaped frame to limit the rotation amplitude of the rotating plate.

[0020] Preferably, the limiting baffle has a through hole, and a positioning rod that can be screwed into the rotating plate as a whole is provided in the through hole.

[0021] Preferably, the top of the fixed plate is provided with a lifting groove adapted to the lifting plate, and the inner walls of the front and rear sides of the lifting groove are provided with a plurality of arc-shaped grooves at equal intervals in the longitudinal direction. The inner walls of the front and rear sides of the lifting plate are provided with spring plungers adapted to the arc-shaped grooves, which are used to fix the lifting plate at different heights.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] The method of zoned detection is adopted to speed up the detection efficiency. If leakage occurs during the detection process, helium gas seeps out and is sucked into the helium mass spectrometer leak detector through the suction gun. At this time, the detection module made of the suction gun can be removed one by one to locate the leakage area. The detection can be carried out by holding the suction gun by hand, which is convenient and accurate in locating the leakage point. It can also detect multiple areas of the shell surface at the same time and locate multiple leakage points. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this application;

[0025] Figure 2 This is a schematic diagram of the installation of the limit baffle in this application;

[0026] Figure 3 This is a schematic diagram of the structure of the test piece in this application;

[0027] Figure 4This is a schematic diagram of the material placement component structure in this application.

[0028] In the diagram: 1. Operating table; 2. Positioning slot; 3. Fixing plate; 4. Lifting plate; 5. U-shaped frame; 6. Rotating plate; 7. Connecting plate; 8. Threaded column; 9. Detection module; 10. Fixing frame; 11. Telescopic connecting rod; 12. Positioning frame; 13. Locking screw; 14. Limiting baffle; 15. Positioning rod. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1 to 4 This utility model provides a technical solution: an airtightness testing partition device, including an operating table 1 and a testing component disposed at the top of the operating table 1. The testing component consists of a material placement component and a testing component. The testing component includes a fixing plate 3 and a fixing frame 10 welded and fixed to the top of the operating table 1. A lifting groove is opened at the top of the fixing plate 3, and a lifting plate 4 is movably installed in the lifting groove. Several arc-shaped grooves are longitudinally and equidistantly arranged on the inner walls of the front and rear sides of the lifting groove. Spring plungers adapted to the arc-shaped grooves are provided on the inner walls of the front and rear sides of the lifting plate 4. By inserting the spring plungers into the arc-shaped grooves of different heights, the lifting plate 4 is fixed at different heights. A U-shaped frame 5 is welded and fixed to the top of the lifting plate 4. A rotating shaft is disposed in the U-shaped frame 5. Both ends of the rotating shaft are connected to the inner wall of the U-shaped frame 5 through bearings, so that it can rotate independently. A rotating plate 6 is welded and fixed to the top of the rotating shaft. A connecting plate 7 is rotatably connected to the top of the rotating plate 6 through a hinge. Several detection modules 9 are provided on the right sidewalls of the rotating plate 6 and the connecting plate 7 for airtightness testing of the casing to be tested. The detection modules 9 are made of helium mass spectrometry leak detectors. The gas inlet of the helium mass spectrometry leak detector is fixed to the rotating plate 6 or the connecting plate 7 by a snap-fit ​​mechanism. That is, the suction gun is provided with a locking block, and the connecting plate 7 or the rotating plate 6 is provided with a locking groove that matches the locking block. After the battery casing is evacuated to a vacuum, helium gas is injected and drawn into the helium mass spectrometry leak detector through several suction guns for testing. If leakage occurs during the testing process, helium gas leaks out and is drawn into the helium mass spectrometry leak detector through the suction guns. At this time, the detection modules 9 made of suction guns can be removed one by one to locate the leakage area. The leakage point can be accurately located by holding the suction gun by hand. It is possible to detect multiple areas of the casing surface at the same time and locate multiple leakage points. The helium mass spectrometry leak detector is a common existing technology for detecting leakage points, which will not be described in detail here.

[0031] The top of the connecting plate 7 is provided with a threaded groove, and a threaded post 8 is provided in the threaded groove. The diameter of the threaded post 8 is the same as the inner width of the fixed frame 10, so that after rotating the rotating plate 6 and the connecting plate 7 to the right, the threaded post 8 can be inserted into the fixed frame 10, which can prevent the angle of the connecting plate 7 from being unable to be fixed, and the height of the rotating plate 6 can be adjusted by screwing the threaded post 8.

[0032] The placement component includes a positioning frame 12 for placing the housing to be tested. The positioning frame 12 is located between the fixing plate 3 and the fixing frame 10. Several locking screws 13 are set on the positioning frame 12 and used to fix the housing to be tested. A cross-shaped reinforcing plate is installed at the bottom of the positioning frame 12 to prevent its deformation. A telescopic connecting rod 11 is installed at the bottom of the cross-shaped reinforcing plate to ensure its vertical lifting movement. The bottom of the telescopic connecting rod 11 is welded and fixed in the positioning groove 2. The bottom of the cross-shaped reinforcing plate is provided with an insertion groove that matches the telescopic connecting rod 11, which facilitates the later disassembly of the positioning frame 12. The telescopic connecting rod 11 consists of a vertical rod and a lifting rod that can freely extend and retract at its top. This is a common existing technology and will not be described in detail here. The top of the operating table 1 is provided with a positioning groove 2 that engages with the positioning frame 12. The housing to be tested, after being filled with helium, is placed in the positioning frame 12 and its position is fixed by several locking screws 13. Then, the telescopic connecting rod 11 drives the positioning frame 12 to move vertically downward and insert into the positioning groove 2 to prevent the housing from shaking during the testing process.

[0033] A limiting baffle 14 is welded and fixed on the U-shaped frame 5 to limit the rotation amplitude of the rotating plate 6. The limiting baffle 14 has a through hole, and a positioning rod 15 is installed in the through hole to be threaded onto the rotating plate 6 to form an integral unit. That is, the part of the positioning rod 15 that connects the rotating plate 6 and the limiting baffle 14 has threads. By controlling the rotating plate 6 to fit against the limiting baffle 14 and controlling the positioning rod 15 to pass through the limiting baffle 14 and connect to the rotating plate 6, its position can be fixed, making it convenient to remove the detection module 9 on the connecting plate 7 and the rotating plate 6.

[0034] Working principle: During use, the shell to be tested, after being filled with helium, is placed in the positioning frame 12 and fixed in position by locking screw 13, and inserted into the positioning groove 2. The exposed length of the threaded post 8 is adjusted by turning it according to the height of the shell. The rotating plate 6 and connecting plate 7 are controlled to rotate until the threaded post 8 enters the fixed frame 10. If leakage occurs during the detection process, helium seeps out and is sucked into the helium mass spectrometer leak detector through the suction gun. At this time, the detection module 9 made of the suction gun is pulled out one by one to locate the leakage area. The leakage point can be easily and accurately located by holding the suction gun by hand.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. For example, the welding described in the specific embodiments of the present invention is merely a connection method for keeping two structures fixed. Fixing by other methods such as riveting, interference fit, etc., is merely a variation of this embodiment. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtightness detection zone device, characterized in that: It includes an operating table (1) and a detection component disposed on the top of the operating table (1), wherein the detection component consists of a material placement component and a detection component, wherein: The testing component includes a fixing plate (3) and a fixing frame (10) fixed to the top of the operating table (1); A lifting plate (4) installed on the top of the fixed plate (3) and capable of height adjustment; A U-shaped frame (5) fixed to the top of the lifting plate (4); Rotate the rotating plate (6) installed in the U-shaped frame (5); Rotate the connecting plate (7) mounted on the top of the rotating plate (6); A plurality of detection modules (9) are disposed on the rotating plate (6) and the connecting plate (7), and the detection modules (9) are used to perform airtightness testing on the shell to be tested; A threaded post (8) is set at the top of the connecting plate (7) and adapted to the fixing frame (10); The material placement component includes a positioning frame (12) for placing the housing to be tested, and the positioning frame (12) is disposed between the fixing plate (3) and the fixing frame (10); A plurality of locking screws (13) are set on the positioning frame (12) and used to fix the housing to be tested; In this process, by controlling the rotation of the rotating plate (6) and the connecting plate (7), the detection surfaces of several detection modules (9) are made to face the shell to be tested, thereby performing airtightness testing on the inflated shell.

2. The airtightness detection zoning device according to claim 1, characterized in that: The bottom of the positioning frame (12) is fitted with a cross-shaped reinforcing plate to prevent deformation.

3. The airtightness detection zoning device according to claim 2, characterized in that: The bottom end of the cross-shaped reinforcing plate is equipped with a telescopic connecting rod (11) to ensure its vertical lifting and lowering movement.

4. The airtightness detection zoning device according to claim 1, characterized in that: The top of the operating table (1) is provided with a positioning groove (2) that engages with the positioning frame (12).

5. The airtightness detection zoning device according to claim 1, characterized in that: The U-shaped frame (5) is fixed with a limiting baffle (14) to limit the rotation range of the rotating plate (6).

6. The airtightness detection zoning device according to claim 5, characterized in that: The limiting baffle (14) has a through hole, and a positioning rod (15) that can be screwed into the rotating plate (6) as a whole is provided in the through hole.

7. The airtightness detection zoning device according to claim 1, characterized in that: The top of the fixed plate (3) is provided with a lifting groove that is compatible with the lifting plate (4), and the inner walls of the front and rear sides of the lifting groove are provided with several arc-shaped grooves at equal intervals in the longitudinal direction. The inner walls of the front and rear sides of the lifting plate (4) are provided with spring plungers that are compatible with the arc-shaped grooves, which are used to fix the lifting plate (4) at different heights.

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