A battery hermeticity test fixture

Abstract

The utility model provides a kind of battery airtightness test fixture, belong to testing device technical field.This kind of battery airtightness test fixture includes tester and clamping stabilizing mechanism, the top of tester is equipped with clamping frame, the inner side of clamping frame is movably connected with clamping plate, the bottom of clamping plate is also equipped with fixture, stable seat is movably connected at the bottom of clamping plate, the front side of stable seat is equipped with stable cavity, stable plate is movably connected at the both sides inside stable cavity, the both sides of stable plate top are all equipped with stable mouth, stable connecting mechanism is fixedly connected at the both sides of stable seat top, by setting clamping stabilizing mechanism, the expansion medium of installation connection can be formed on the outside of clamping plate bottom, so that user carries out sufficient installation connection operation between fixture and clamping plate, avoid fixture to appear outside difficult to install and connect when using, leading to the situation that fixture subsequent force is not uniform, thus improve the connection force uniformity and clamping effect of fixture.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and more specifically, to a battery airtightness testing fixture. Background Technology

[0002] Battery airtightness testing fixtures are specialized tooling equipment used to test the airtightness of battery casings, seals, and other components. Their core function is to determine the presence of potential leaks by simulating the actual working pressure environment, ensuring the safety and stability of the battery during use. These fixtures are widely used in the quality inspection stages of the production of power batteries and consumer batteries. The battery airtightness testing fixture constructs a sealed test space and uses pressure changes to detect leaks. The positive pressure fixture fills the battery with compressed air and monitors the pressure drop; the negative pressure fixture evacuates the outside and observes bubbles or pressure rises; the differential pressure fixture compares the pressure difference between the test chamber and the standard chamber, using high-precision sensors to capture minute changes. The fixture accurately identifies sealing defects under simulated working conditions through seal clamping, gas pipeline pressure control, and drive device positioning, ensuring no battery leakage risk. Since the external connection of the clamping fixture directly affects the uniformity of the clamping force, uniform connection operation is necessary.

[0003] In related technologies, during the use of fixtures, the clamping jig and the clamping force plate are generally connected by connecting columns and bolts, so that the clamping force plate can apply lifting and clamping force to the clamping jig for use.

[0004] However, in the current use of the fixture, since the size of the clamping force plate is fixed, while the size of the clamping fixture changes with the size of the battery, when the size of the clamping fixture is larger than the force plate, the connection position between the clamping force plate and the clamping fixture is closer to the inside. This results in uneven force application on the outside of the clamping fixture, affecting the uniformity of the connection force and the clamping effect. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a battery airtightness testing fixture that overcomes or at least partially solves the above technical problems.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a battery airtightness testing fixture, including a tester, a clamp mounted on the top of the tester, a clamp plate movably connected to the inner side of the clamp, and a fixture mounted on the bottom of the clamp plate;

[0008] Clamping and stabilizing mechanism; the clamping and stabilizing mechanism includes:

[0009] Stabilizer; the stabilizer is movably connected to the bottom of the clamping plate, and a stabilizing cavity is provided on the front side of the stabilizer;

[0010] Stabilizing plate; the stabilizing plate is movably connected to both sides inside the stabilizing cavity, and stabilizing openings are provided on both sides of the top of the stabilizing plate;

[0011] A stabilizing connection mechanism; the stabilizing connection mechanism is fixedly connected to both sides of the top of the stabilizing base.

[0012] In a preferred embodiment, the stabilizing connection mechanism includes a connecting seat, a threaded groove, and a bolt. The connecting seat is fixedly connected to both sides of the top of the stabilizing seat, the threaded groove is formed on both sides of the top of the connecting seat, the bolt is threaded into the inside of the threaded groove, and the top of the bolt extends through to the top of the clamping plate.

[0013] In a preferred embodiment, positioning holes communicating with the stabilizing cavity are provided on both sides of the left side of the stabilizing base, and positioning pins are movably connected inside the positioning holes.

[0014] In a preferred embodiment, the left side of the stabilizing plate has a positioning groove that communicates with the positioning hole, and the right side of the positioning post is located inside the positioning groove.

[0015] In a preferred embodiment, a movable plate is movably connected to the left side of the stabilizing base, and the right side of the movable plate is fixedly connected to the left side of the positioning column.

[0016] In a preferred embodiment, the movable plate has a movable opening on its left side, and a movable column is movably connected inside the movable opening. The right side of the movable column is fixedly connected to the left side of the stabilizing base.

[0017] In a preferred embodiment, a movable cylinder communicating with a movable port is fixedly connected to the left side of the movable plate, and the left side of the movable column is located inside the movable cylinder.

[0018] In a preferred embodiment, a magnetic strip is embedded in the top of the inner wall of the movable cylinder, and a magnetic strip that is magnetically connected to the magnetic strip is embedded in the top of the movable column.

[0019] The battery airtightness testing fixture provided by this utility model has the following advantages:

[0020] 1. By setting a clamping and stabilizing mechanism, an extended medium can be formed on the outer side of the bottom of the clamping plate, which allows for external installation and connection. This enables the user to perform a full installation and connection operation between the fixture and the clamping plate, avoiding the situation where the outer side of the fixture is difficult to install and connect with the clamping plate during use, which would lead to uneven force application in the fixture. Therefore, the uniformity of connection force application and clamping effect of the fixture are improved.

[0021] 2. By setting up a stable connection mechanism, the installation and connection between the stabilizer base and the clamp can be carried out, so that the user can easily connect the stabilizer base and the clamp. This avoids the situation where it is difficult to connect the stabilizer base to the clamp during use, thus improving the convenience of the installation and connection of the stabilizer base.

[0022] 3. By setting positioning holes and positioning posts, the positioning between the stabilizing plate and the stabilizing base can be adjusted, avoiding the situation where the stabilizing plate is difficult to position with the stabilizing base during use, thus improving the convenience of positioning the stabilizing plate and the stabilizing base. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model;

[0025] Figure 2 A right-view three-dimensional structural diagram of the stable seat provided for an embodiment of this utility model;

[0026] Figure 3 A three-dimensional cross-sectional structural diagram of the stabilizer provided for an embodiment of this utility model;

[0027] Figure 4 A three-dimensional cross-sectional structural diagram of the movable plate provided for an embodiment of this utility model;

[0028] In the diagram: 1. Tester; 2. Clamp; 3. Clamping plate; 4. Fixture; 5. Stabilizer; 6. Stabilizer cavity; 7. Stabilizer plate; 8. Stabilizer port; 9. Connecting seat; 10. Screw groove; 11. Bolt; 12. Positioning hole; 13. Positioning post; 14. Positioning groove; 15. Moving plate; 16. Moving port; 17. Moving post; 18. Moving cylinder; 19. Magnetic strip; 20. Magnetic strip. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Reference Figures 1-4 This utility model provides a technical solution: a battery airtightness testing fixture, including a tester 1 and a clamping and stabilizing mechanism. A clamp 2 is installed on the top of the tester 1, and a clamping plate 3 is movably connected to the inner side of the clamp 2. A fixture 4 is also installed on the bottom of the clamping plate 3. An extension medium can be formed on the outer side of the bottom of the clamping plate 3 to allow for external installation and connection, so that the user can fully install and connect the fixture 4 and the clamping plate 3. This avoids the situation where the outer side of the fixture 4 is difficult to install and connect with the clamping plate 3 during use, resulting in uneven force application of the fixture 4. Therefore, the uniformity of connection force application and clamping effect of the fixture 4 are improved.

[0031] Reference Figures 1-4 In a preferred embodiment, the clamping and stabilizing mechanism includes a stabilizing seat 5, which is movably connected to the bottom of the clamping plate 3. A stabilizing cavity 6 is formed on the front side of the stabilizing seat 5. A stabilizing plate 7 is movably connected to both sides inside the stabilizing cavity 6. Stabilizing openings 8 are formed on both sides of the top of the stabilizing plate 7. A stabilizing connection mechanism is fixedly connected to both sides of the top of the stabilizing seat 5. According to the actual installation and connection requirements of the fixture 4 and the clamping plate 3, the screws provided with the fixture 4 are held and passed through the stabilizing openings 8 into the stabilizing plate 7, connecting the screws to the top of the fixture 4. This allows the stabilizing plate 7, in conjunction with the stabilizing seat 5, to stabilize the fixture 4 and the clamping plate 3. The installation and connection operation is performed between the two. The stable connection mechanism includes a connecting seat 9, a screw groove 10, and a bolt 11. The connecting seat 9 is fixedly connected to both sides of the top of the stable seat 5. The screw groove 10 is opened on both sides of the top of the connecting seat 9. The bolt 11 is threaded into the inside of the screw groove 10. The top of the bolt 11 extends through to the top of the clamping plate 3, which can be used to install and connect the stable seat 5 and the clamping plate 3. This makes it easier for users to install and connect the stable seat 5 and the clamping plate 3, avoiding the situation where it is difficult to install and connect the stable seat 5 to the clamping plate 3. Therefore, it improves the ease of installation and connection of the stable seat 5.

[0032] Reference Figures 2-4 In a preferred embodiment, positioning holes 12 communicating with the stabilizing cavity 6 are provided on both sides of the left side of the stabilizing base 5. A positioning post 13 is movably connected inside the positioning hole 12, which allows for adjustment and positioning between the stabilizing plate 7 and the stabilizing base 5. This avoids the situation where the stabilizing plate 7 is difficult to position with the stabilizing base 5 during use, thus improving the ease of positioning between the stabilizing plate 7 and the stabilizing base 5. A positioning groove 14 communicating with the positioning hole 12 is provided on the left side of the stabilizing plate 7. The right side of the positioning post 13 is located inside the positioning groove 14, which provides space for the positioning post 13 to insert and position the stabilizing plate 7. This avoids the situation where the positioning post 13 is difficult to position with force during use, thus improving the force positioning effect of the positioning post 13.

[0033] Reference Figures 2-4In a preferred embodiment, a movable plate 15 is movably connected to the left side of the stabilizing base 5, and the right side of the movable plate 15 is fixedly connected to the left side of the positioning column 13. This provides a medium for the user to move the positioning columns 13 on both sides simultaneously, thus improving the ease of use of the positioning column 13. A movable opening 16 is provided on the left side of the movable plate 15, and a movable column 17 is movably connected inside the movable opening 16. The right side of the movable column 17 is fixedly connected to the left side of the stabilizing base 5. This allows for connection and anti-disengagement between the movable plate 15, the moved positioning column 13, and the stabilizing base 5, thus improving the operational stability of the movable plate 15 and the positioning column 13.

[0034] Reference Figures 2-4 In a preferred embodiment, a movable cylinder 18 connected to the movable port 16 is fixedly connected to the left side of the movable plate 15. The left side of the movable column 17 is located inside the movable cylinder 18, which can provide a medium for the user to apply a moving force to the movable plate 15, thus improving the convenience of moving the movable plate 15. A magnetic strip 19 is embedded in the top of the inner wall of the movable cylinder 18, and a magnetic strip 20 that is magnetically connected to the magnetic strip 19 is embedded in the top of the movable column 17. The movable column 17 can cooperate with the movable cylinder 18 to perform magnetic positioning of the movable plate 15 and the positioning column 13, thus improving the working stability of the movable plate 15 and the positioning column 13.

[0035] Specifically, the working process or principle of this battery airtightness testing fixture is as follows: During use, the handheld stabilizer 5 is moved to the bottom of the clamping plate 3, and the handheld bolt 11 is inserted through the clamping plate 3 and aligned with the threaded groove 10 at the top of the connecting seat 9. The bolt 11 is rotated to engage the threaded groove 10 through the connecting seat 9, thus connecting the stabilizer 5 and the clamping plate 3. Subsequently, the handheld stabilizer plate 7 is placed inside the stabilizing cavity 6, and its position is adjusted horizontally according to the installation requirements of the fixture 4, adjusting the position of the stabilizing port 8 to prepare for the subsequent installation of the fixture 4. After the position of the stabilizer plate 7 is adjusted, the handheld moving cylinder 18 moves synchronously with the moving plate 15 to move the positioning pins 13 on both sides of the stabilizer 5 to the right, causing the positioning pins 13 to penetrate the stabilizer 5 through the positioning hole 12 and enter the positioning groove 14. This causes the positioning pins 13 to engage with the positioning groove 14 and the positioning hole 12, stabilizing the stabilizer 5. The fixed plate 7 and the stable seat 5 are inserted and positioned. During this process, the moving column 17 moves inside the moving port 16 and the moving cylinder 18 to move and connect the moving plate 15 and the stable seat 5 to prevent displacement. At the same time, the magnetic strip 19, together with the magnetic strip 20, uses the moving cylinder 18 and the moving column 17 to magnetically position the moved plate 15 and the positioning column 13. Then, the jig 4 can be moved to the bottom of the stable plate 7 and the mounting slot on the top of the jig 4 is aligned with the stable port 8. The screw of the jig 4 passes through the stable port 8 and through the stable plate 7 to install and connect the jig 4 and the stable plate 7. This allows the stable plate 7 to work with the stable seat 5 and the connecting seat 9 to install and connect the jig 4 and the clamping plate 3. This ensures that the outer side of the top of the jig 4 is evenly connected to the clamping plate 3 so that the jig 4 can then stably and evenly clamp and apply force to the external battery.

[0036] It should be noted that the tester 1, clamp 2, clamp 3 and fixture 4 are all existing devices or equipment, or devices or equipment that can be implemented by existing technology. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A battery airtightness testing fixture, comprising a tester (1), wherein a clamp (2) is mounted on the top of the tester (1), a clamping plate (3) is movably connected to the inner side of the clamp (2), and a fixture (4) is also mounted on the bottom of the clamping plate (3), characterized in that... ； Clamping and stabilizing mechanism; the clamping and stabilizing mechanism includes: Stabilizer (5); The stabilizer (5) is movably connected to the bottom of the clamp (3), and a stabilizing cavity (6) is provided on the front side of the stabilizer (5); Stabilizing plate (7); The stabilizing plate (7) is movably connected to both sides inside the stabilizing cavity (6), and stabilizing openings (8) are provided on both sides of the top of the stabilizing plate (7); Stable connection mechanism; the stable connection mechanism is fixedly connected to both sides of the top of the stabilizer (5).

2. The battery airtightness testing fixture according to claim 1, characterized in that, The stabilizing connection mechanism includes a connecting seat (9), a screw groove (10), and a bolt (11). The connecting seat (9) is fixedly connected to both sides of the top of the stabilizing seat (5). The screw groove (10) is opened on both sides of the top of the connecting seat (9). The bolt (11) is threaded into the inside of the screw groove (10). The top of the bolt (11) extends through to the top of the clamping plate (3).

3. The battery airtightness testing fixture according to claim 1, characterized in that, The stabilizing base (5) has positioning holes (12) on both sides of its left side that are connected to the stabilizing cavity (6), and positioning pins (13) are movably connected inside the positioning holes (12).

4. A battery airtightness testing fixture according to claim 3, characterized in that, The left side of the stabilizing plate (7) is provided with a positioning groove (14) that communicates with the positioning hole (12), and the right side of the positioning column (13) is located inside the positioning groove (14).

5. A battery airtightness testing fixture according to claim 3, characterized in that, A movable plate (15) is movably connected to the left side of the stabilizing base (5), and the right side of the movable plate (15) is fixedly connected to the left side of the positioning column (13).

6. A battery airtightness testing fixture according to claim 5, characterized in that, The movable plate (15) has a movable opening (16) on its left side, and a movable column (17) is movably connected inside the movable opening (16). The right side of the movable column (17) is fixedly connected to the left side of the stabilizing seat (5).

7. A battery airtightness testing fixture according to claim 6, characterized in that, The left side of the movable plate (15) is fixedly connected to a movable cylinder (18) that communicates with the movable port (16), and the left side of the movable column (17) is located inside the movable cylinder (18).

8. A battery airtightness testing fixture according to claim 7, characterized in that, A magnetic strip (19) is inlaid and connected to the top of the inner wall of the movable cylinder (18), and a magnetic strip (20) that is magnetically connected to the magnetic strip (19) is inlaid and connected to the top of the movable column (17).

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