Battery cover air tightness test fixture
By designing a battery cover airtightness test fixture with a multi-point fixing mechanism, the problem of battery cover displacement during inflation was solved, thus improving the accuracy of the test.
Patent Information
- Application Number
- CN202520664252.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-10
AI Technical Summary
Existing battery cover testing fixtures lack effective support during inflation, causing the battery cover to easily shift, which affects the accuracy of the test.
A battery cover airtightness test fixture was designed, which includes a pressing mechanism and a clamping mechanism. The moving plate and pressure plate are driven by a cylinder, and combined with the clamping block and wedge plate, the battery cover is fixed at multiple points to ensure that it is not easy to shift when the air pressure increases.
It improves the accuracy of battery cover detection, prevents the battery cover from shifting during inflation, and ensures that the seal is not compromised.
Smart Images
Figure CN223925916U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery cover testing technology, specifically a battery cover airtightness testing fixture. Background Technology
[0002] To ensure battery safety, it is generally necessary to perform an airtightness test on the battery cover. After the battery cover is installed on the fixture, gas of a certain pressure is injected into the battery cover through an air source. Then, the air inlet valve is closed, and the air pressure inside the battery cover is kept stable for a period of time. The airtightness of the battery cover is then tested using an airtightness tester.
[0003] When testing a battery cover, the cover is first installed and fixed, and then gas is injected into it for testing. Most existing battery cover testing fixtures use a pressing plate to press and fix the battery cover to the testing table. Because the sides of the battery cover lack sufficient fixed support, the internal air pressure of the battery cover gradually increases as gas is injected, making the battery cover prone to slight displacement. This can cause gaps to appear on the tightly fitted contact surface between the battery cover and the testing device, reducing the sealing performance and affecting the accuracy of the test. Utility Model Content
[0004] The purpose of this invention is to provide a battery cover airtightness testing fixture to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A battery cover airtightness testing fixture includes: a fixed platform, a mounting bracket and an airtightness tester fixedly mounted on the top surface of the fixed platform, a connecting component mounted on one end of the airtightness tester, and further includes:
[0007] The pressing mechanism is located inside the fixed frame. The pressing mechanism includes a pressure plate located inside the fixed frame. A placement plate is fixedly installed on the inner wall of the lower end of the fixed frame. The pressing mechanism is used to press and fix the battery cover.
[0008] The clamping mechanism is located above the placement plate. The clamping mechanism includes multiple clamping blocks located above the placement plate. T-shaped blocks are fixedly installed on the bottom surface of the multiple clamping blocks by bolts. The clamping mechanism is used to clamp and fix the side of the battery cover.
[0009] Preferably, a cylinder is fixedly installed on the top surface of the fixed frame, and the lower end of the cylinder slides through the top surface of the fixed frame and extends into the interior of the fixed frame. A movable plate is fixedly installed on the lower end of the cylinder.
[0010] Preferably, multiple limiting posts are slidably installed on the top surface of the movable plate, and the two ends of the multiple limiting posts are respectively fixedly connected to the upper and lower inner walls of the fixed frame.
[0011] Preferably, the bottom surface of the movable plate has multiple grooves, and the top surface of the pressure plate has multiple sliding rods fixedly installed. The upper ends of the multiple sliding rods slide through the inner walls of the multiple grooves and extend to the top of the movable plate. The upper ends of the multiple sliding rods are fixedly installed with circular plates.
[0012] Preferably, elastic elements are slidably installed on the outer walls of multiple sliding rods, and the two ends of the multiple elastic elements are fixedly connected to the inner walls of multiple grooves and the top surface of the pressure plate, respectively. A limit groove is opened on the top surface of the plate.
[0013] Preferably, the top surface of the placement plate is provided with a T-shaped groove, and the inner walls of the multiple T-shaped grooves are slidably connected to the outer walls of the multiple T-shaped blocks respectively.
[0014] Preferably, elastic element 2 is fixedly installed on the side of each of the multiple T-shaped blocks, and the other end of each of the multiple elastic element 2 is fixedly connected to the inner wall of one side of each of the multiple T-shaped grooves. Wedge plates are fixedly installed on the other side of each of the multiple T-shaped blocks, and one end of each of the multiple wedge plates slides through the inner wall of the multiple T-shaped grooves and extends to the outside of the placement plate.
[0015] Preferably, two fixing strips are fixedly installed on each side of the pressure plate, and two push plates are fixedly installed at both ends of the multiple fixing strips. The bottom surfaces of the two push plates are slidably connected to the sides of the multiple wedge plates.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] When the pressure plate moves downward, it drives the fixing strip and the push plate to move. The push plate pushes the wedge plate to move, and the wedge plate drives the T-shaped block and the clamping block to move. The clamping block clamps and fixes the side of the battery cover, so that when the battery cover is tested for inflation and the internal air pressure increases, the clamping plate firmly fixes the battery cover, and the battery cover is less likely to shift, which would lead to a decrease in the seal between the battery cover and the placement plate, thus improving the accuracy of the test.
[0018] By setting up an elastic element and a sliding rod, when the pressure plate moves downward to press and fix the battery cover, the elastic element provides cushioning, allowing the pressure plate to slowly apply pressure to the top of the battery cover, ensuring that the pressure plate does not easily damage the top of the battery cover. At the same time, the limiting groove limits and seals the lower end of the battery cover, making it less likely for the battery cover to shift or shake, thus improving the accuracy of the test. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0020] Figure 2 This is a three-dimensional cross-sectional view of the fixing frame of this utility model;
[0021] Figure 3 This is an exploded three-dimensional view of the T-shaped block of this utility model;
[0022] Figure 4 This is a cross-sectional schematic diagram of the three-dimensional structure of the movable plate of this utility model.
[0023] In the picture:
[0024] 1. Fixing platform; 101. Fixing frame; 102. Air tightness tester; 103. Connecting components;
[0025] 2. Pressing mechanism; 201. Placement plate; 202. Limiting groove; 203. Cylinder; 204. Moving plate; 205. Limiting post; 206. Groove; 207. Slide rod; 208. Pressure plate; 209. Circular plate; 210. Elastic element one;
[0026] 3. Clamping mechanism; 301. T-slot; 302. T-block; 303. Clamping block; 304. Elastic element two; 305. Wedge plate; 306. Fixing strip; 307. Push plate. Detailed Implementation
[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0029] like Figures 1-4 As shown, this application provides a battery cover airtightness testing fixture, including: a fixed platform 1, a fixing frame 101 and an airtightness tester 102 fixedly mounted on the top surface of the fixed platform 1, a connecting component 103 mounted on one end of the airtightness tester 102, and further including:
[0030] Pressing mechanism 2 is located inside the fixed frame 101. Pressing mechanism 2 includes a pressure plate 208 located inside the fixed frame 101. A placement plate 201 is fixedly installed on the inner wall of the lower end of the fixed frame 101. Pressing mechanism 2 is used to press and fix the battery cover.
[0031] Specifically, such as Figures 1-4 As shown, a cylinder 203 is fixedly installed on the top surface of the fixed frame 101. The lower end of the cylinder 203 slides through the top surface of the fixed frame 101 and extends into the interior of the fixed frame 101. A movable plate 204 is fixedly installed on the lower end of the cylinder 203.
[0032] In this embodiment: the movable plate 204 is moved by the cylinder 203.
[0033] Specifically, such as Figures 1-4 As shown, multiple limiting posts 205 are slidably installed on the top surface of the movable plate 204, and the two ends of the multiple limiting posts 205 are fixedly connected to the upper and lower inner walls of the fixed frame 101 respectively.
[0034] In this embodiment, the moving plate 204 is limited by the limiting post 205, so that the moving plate 204 moves more stably.
[0035] Specifically, such as Figures 1-4 As shown, the bottom surface of the movable plate 204 has multiple grooves 206, and the top surface of the pressure plate 208 is fixedly installed with multiple sliding rods 207. The upper ends of the multiple sliding rods 207 slide through the inner walls of the multiple grooves 206 and extend to the top of the movable plate 204. The upper ends of the multiple sliding rods 207 are fixedly installed with circular plates 209.
[0036] In this embodiment, the movable plate 204 is limited and supported by the sliding rod 207.
[0037] Specifically, such as Figures 1-4 As shown, elastic elements 210 are slidably installed on the outer walls of multiple sliding rods 207 respectively. The two ends of the multiple elastic elements 210 are fixedly connected to the inner walls of multiple grooves 206 and the top surface of pressure plate 208 respectively. A limiting groove 202 is opened on the top surface of the placement plate 201.
[0038] In this embodiment: the elastic element 210 is used to buffer the pressure plate 208, so that the pressure plate 208 slowly presses and fixes the top of the battery cover.
[0039] The clamping mechanism 3 is located above the placement plate 201. The clamping mechanism 3 includes multiple clamping blocks 303 located above the placement plate 201. T-shaped blocks 302 are respectively fixedly installed on the bottom surface of the multiple clamping blocks 303 by bolts. The clamping mechanism 3 is used to clamp and fix the side of the battery cover.
[0040] Specifically, such as Figures 1-4 As shown, a T-shaped groove 301 is provided on the top surface of the placement plate 201, and the inner walls of the multiple T-shaped grooves 301 are slidably connected to the outer walls of the multiple T-shaped blocks 302 respectively.
[0041] In this embodiment: the T-shaped groove 301 is used to limit the T-shaped block 302, making the movement of the T-shaped block 302 more stable, and the clamping block 303 is used to limit and fix the side of the battery cover.
[0042] Specifically, such as Figures 1-4As shown, multiple T-shaped blocks 302 are respectively fixedly installed with elastic element 2 304 on their sides, and the other end of multiple elastic element 2 304 is respectively fixedly connected to the inner wall of one side of multiple T-shaped grooves 301. Multiple T-shaped blocks 302 are respectively fixedly installed with wedge plate 305 on their other side, and one end of multiple wedge plate 305 slides through the inner wall of multiple T-shaped grooves 301 and extends to the outside of the placement plate 201.
[0043] In this embodiment: the elastic element 304 applies elastic force to the T-block 302, and the wedge plate 305 drives the T-block 302 to move.
[0044] Specifically, such as Figures 1-4 As shown, two fixing strips 306 are fixedly installed on both sides of the pressure plate 208, and two push plates 307 are fixedly installed at both ends of the multiple fixing strips 306. The bottom surfaces of the two push plates 307 are slidably connected to the sides of the multiple wedge plates 305 respectively.
[0045] In this embodiment: the push plate 307 pushes the wedge plate 305 to move and blocks and limits the wedge plate 305.
[0046] The specific solution is as follows: The battery cover is placed in the limiting groove 202 of the placement plate 201. The cylinder 203 is activated, which drives the moving plate 204, the sliding rod 207 and the pressure plate 208 to move. When the pressure plate 208 presses and fixes the battery cover, the elastic element 210 provides buffering, allowing the pressure plate 208 to slowly apply pressure to the top of the battery cover, making the battery cover less prone to damage. At the same time, the pressure plate 208 drives the push plate 307 to move through the fixing strip 306. The push plate 307 pushes the wedge plate 305 to move. The wedge plate 305 drives the T-shaped block 302 and the clamping block 303 to move. The clamping block 303 clamps and fixes the side of the battery cover. The connecting component 103 is connected to the air inlet of the battery cover. The air tightness tester 102 is used to test the air inflation of the battery cover.
[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.
[0048] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A battery cover airtightness testing fixture, comprising: A fixed platform (1), on the top surface of which a fixed frame (101) and an airtightness tester (102) are fixedly installed, and a connecting component (103) is installed at one end of the airtightness tester (102), characterized in that it further includes: The pressing mechanism (2) is located inside the fixed frame (101). The pressing mechanism (2) includes a pressure plate (208) located inside the fixed frame (101). A placement plate (201) is fixedly installed on the inner wall of the lower end of the fixed frame (101). The pressing mechanism (2) is used to press and fix the battery cover. The clamping mechanism (3) is disposed above the placement plate (201). The clamping mechanism (3) includes multiple clamping blocks (303) located above the placement plate (201). The bottom surfaces of the multiple clamping blocks (303) are respectively fixed with T-shaped blocks (302) by bolts. The clamping mechanism (3) is used to clamp and fix the side of the battery cover.
2. The battery cover airtightness testing fixture according to claim 1, characterized in that, A cylinder (203) is fixedly installed on the top surface of the fixed frame (101). The lower end of the cylinder (203) slides through the top surface of the fixed frame (101) and extends into the interior of the fixed frame (101). A movable plate (204) is fixedly installed on the lower end of the cylinder (203).
3. A battery cover airtightness testing fixture according to claim 2, characterized in that, Multiple limiting posts (205) are slidably installed on the top surface of the movable plate (204), and the two ends of the multiple limiting posts (205) are respectively fixedly connected to the upper and lower inner walls of the fixed frame (101).
4. The battery cover airtightness testing fixture according to claim 3, characterized in that, The bottom surface of the movable plate (204) is provided with multiple grooves (206), and the top surface of the pressure plate (208) is fixedly installed with multiple sliding rods (207). The upper ends of the multiple sliding rods (207) slide through the inner wall of the multiple grooves (206) and extend to the top of the movable plate (204). The upper ends of the multiple sliding rods (207) are fixedly installed with circular plates (209).
5. A battery cover airtightness testing fixture according to claim 4, characterized in that, The outer walls of the multiple sliding rods (207) are respectively slidably installed with elastic elements (210), and the two ends of the multiple elastic elements (210) are respectively fixedly connected to the inner walls of the multiple grooves (206) and the top surface of the pressure plate (208). The top surface of the placement plate (201) is provided with a limiting groove (202).
6. A battery cover airtightness testing fixture according to claim 1, characterized in that, The top surface of the placement plate (201) is provided with a T-shaped groove (301), and the inner walls of the multiple T-shaped grooves (301) are slidably connected to the outer walls of the multiple T-shaped blocks (302).
7. A battery cover airtightness testing fixture according to claim 6, characterized in that, Multiple T-shaped blocks (302) are respectively fixedly installed with elastic element II (304) on their sides. The other end of multiple elastic element II (304) is respectively fixedly connected to the inner wall of one side of multiple T-shaped grooves (301). Wedge plate (305) is respectively fixedly installed on the other side of multiple T-shaped blocks (302). One end of multiple wedge plate (305) slides through the inner wall of multiple T-shaped grooves (301) and extends to the outside of the placement plate (201).
8. A battery cover airtightness testing fixture according to claim 7, characterized in that, Two fixing strips (306) are fixedly installed on both sides of the pressure plate (208), and two push plates (307) are fixedly installed at both ends of the multiple fixing strips (306). The bottom surfaces of the two push plates (307) are slidably connected to the sides of the multiple wedge plates (305).