Measurement clamp for opening part of battery cell aluminum shell

Abstract

The utility model relates to the technical field of clamps, in particular to a measuring clamp for an opening part of an aluminum shell of a battery cell. Comprising a base, a positioning plate is arranged on the top face of the base, a first air cylinder is arranged on the outer side of the positioning plate, a concave table is arranged on the side, away from the first air cylinder, of the positioning plate of the base, a movable plate is slidably connected into the concave table, and a clamping plate is arranged at the end, close to the positioning plate, of the top face of the movable plate; a second air cylinder is arranged on the side, away from the positioning plate, of the clamping plate on the top face of the movable plate, the second air cylinder is a double-shaft air cylinder, limiting plates are further arranged on the two sides of the base, one end of each limiting plate extends into the position between an air cylinder base and an air cylinder push plate of the second air cylinder, and a control box is arranged on one side of the base. When in use, the electric heating device is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a measuring clamp for the opening of an aluminum casing of a battery cell. Background Technology

[0002] The aluminum casing of the battery cell is an aluminum battery shell. After it is manufactured, it needs to be inspected non-contactly using an image measuring instrument. Therefore, a fixture is needed to fix the aluminum casing of the battery cell on the inspection platform. Patent application number 202220391907.5 discloses a fixture for detecting the opening of a lithium battery casing, comprising: a base, including a base and a boss; a limiting mechanism, including a limiting block one and a limiting block two, for limiting the front and left sides of the lower part of the battery casing; a clamping mechanism, including a cylinder one, a cylinder two, a clamping block one, and a clamping block two; and a support frame for supporting the inner side of the battery casing; the boss is fixed on the base, and the heavier base can lower the center of gravity of the battery casing and the fixture as a whole, making it more stable; the limiting block one and the limiting block two are respectively installed on the top of the boss, and the cylinder one and the cylinder two are embedded on the adjacent sides of the boss; the cylinder one and the cylinder two are connected to a reversing valve through an air pipe, and the reversing valve is connected to a high-pressure air source through an air pipe. This fixture uses pneumatic control to quickly clamp and fix the lower part of the battery casing on the testing instrument, completely exposing the upper opening of the battery casing, which improves the detection accuracy and efficiency. However, it requires the support frame to be placed inside the battery casing first during use, which is relatively troublesome. Figure 3 The image shows a common aluminum casing for a battery cell, which is cylindrical in shape and open at both ends. This application provides a fixture for measuring the openings of the aluminum casing for the battery cell. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a measuring fixture for the opening of the aluminum shell of a battery cell, addressing the aforementioned technical deficiencies.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a battery cell aluminum shell mouth measuring fixture, including a base, a positioning plate provided on the top surface of the base, a first cylinder provided on the outer side of the positioning plate, a recessed platform provided on the side of the base away from the first cylinder, a movable plate slidably connected in the recessed platform, a clamping plate provided on the top surface of the movable plate near the positioning plate, a second cylinder provided on the top surface of the movable plate away from the positioning plate, the second cylinder being a dual-axis cylinder, limit plates also provided on both sides of the base, one end of the limit plate extending between the cylinder seat and the cylinder push plate of the second cylinder, and a control box provided on one side of the base.

[0005] To further optimize this technical solution, chamfers are provided on both sides of the top of the positioning plate.

[0006] To further optimize this technical solution, chamfers are provided on both sides of the top of the clamping plate.

[0007] To further optimize this technical solution, a first groove is provided on both sides of the recessed platform, and a second groove is provided on both sides of the movable plate. The cross-sections of the first groove and the second groove are arc-shaped, and multiple balls are provided between them.

[0008] Compared with the prior art, the present invention has the following advantages: a first cylinder and a positioning plate are provided on one side of the top surface of the base, and a recessed platform is provided on the other side. A movable plate is slidably connected in the recessed platform. A clamping plate and a second cylinder are provided on the movable plate. When clamping the aluminum shell of the battery cell, the movable plate will move, so that the aluminum shell of the battery cell will not be deformed, and it is more convenient to use. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a measuring fixture for the opening of an aluminum casing of a battery cell.

[0010] Figure 2 This is a schematic diagram of the movable plate.

[0011] Figure 3 This is a schematic diagram of the aluminum casing of the battery cell.

[0012] In the diagram: 1. Base; 11. Recessed platform; 111. First groove; 12. Limiting plate; 2. Positioning plate; 3. First cylinder; 4. Control box; 5. Moving plate; 51. Clamping plate; 52. Second cylinder; 53. Second groove; 54. Baffle. Detailed Implementation

[0013] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0014] Detailed implementation method: combined with Figure 1-2As shown, a measuring fixture for the opening of a battery cell aluminum shell includes a base 1. A positioning plate 2 is provided on the top surface of the base 1. The length of the positioning plate 2 is equal to or less than the internal width of the battery cell aluminum shell. A first cylinder 3, preferably a dual-axis cylinder, is provided on the outer side of the positioning plate 2. A recessed platform 11 is provided on the side of the positioning plate 2 away from the first cylinder 3 on the base 1. A movable plate 5 is slidably connected within the recessed platform 11. The top surface of the movable plate 5 is not higher than the top surface of the base 1. A clamping plate 51 is provided on the top surface of the movable plate 5 near the positioning plate 2. The clamping plate 51 is parallel to the positioning plate 2, and the distance between the outer sides of the clamping plate 51 and the positioning plate 2 can reach... The minimum distance is less than the length inside the aluminum shell of the battery cell, and the maximum achievable distance is greater than the length inside the aluminum shell of the battery cell. A second cylinder 52 is provided on the top surface of the moving plate 5 on the side of the clamping plate 51 away from the positioning plate 2. The second cylinder 52 is a dual-axis cylinder. Limiting plates 12 are also provided on both sides of the base 1. One end of the limiting plate 12 extends between the cylinder seat and the cylinder push plate of the second cylinder 52. A control box 4 is provided on one side of the base 1. Two two-position two-way solenoid valves are provided in the control box 4. The two solenoid valves are respectively connected to the first cylinder 3 and the second cylinder 52 through pipelines. A switch for controlling the solenoid valves is also provided on the control box 4.

[0015] When the length of the positioning plate 2 is equal to or slightly less than the width of the inner surface of the aluminum casing of the battery cell (in which case the positioning in the front-to-back direction is better), since the four corners of the inner surface of the aluminum casing of the battery cell protrude from its inner wall, both sides of the outer surfaces of the positioning plate 2 and the clamping plate 51 are provided with recesses to avoid them. In this case, the top two sides of the positioning plate 2 are chamfered to facilitate fitting the aluminum casing of the battery cell onto the outside of the positioning plate 2, and the top two sides of the clamping plate 51 are also chamfered to facilitate fitting the aluminum casing of the battery cell onto the outside of the positioning plate 2.

[0016] Specifically, the recessed platform 11 has first grooves 111 on both sides, and the movable plate 5 has second grooves 53 on both sides. The cross-sections of the first grooves 111 and the second grooves 53 are arc-shaped, and multiple balls are arranged between them. The radius of the balls is equal to the radius of the arc. The depth of the first grooves 111 and the second grooves 53 is less than the radius of the balls. There is a gap between the sides of the movable plate 5 and the sides of the recessed platform 11. This structure makes the resistance when the movable plate 5 moves very small. The second groove 53 passes through one end of the movable plate 5, and a baffle 54 is provided at this end to prevent the balls from falling off.

[0017] When using, combine Figure 1As shown, the aluminum casing of the battery cell is simultaneously fitted onto the outside of the positioning plate 2 and the clamping plate 51, with its bottom surface contacting the top surface of the base 1. Then, the piston rods of the first cylinder 3 and the second cylinder 52 are extended. The first cylinder 3 presses the left side of the aluminum casing of the battery cell onto the left side of the positioning plate 2; the cylinder pusher plate on the second cylinder 52 presses the right side of the aluminum casing of the battery cell onto the right side of the clamping plate 51. Due to the machining accuracy, the distance between the outer sides of the positioning plate 2 and the clamping plate 51 is difficult to be exactly equal to the internal length of the aluminum casing of the battery cell (if the clamping plate 51 is fixed and cannot move, it will cause the aluminum casing of the battery cell to deform). During this process, the moving plate 5 will be pushed to the right by the aluminum casing of the battery cell (in order to facilitate the simultaneous fitting of the aluminum casing of the battery cell onto the outside of the positioning plate 2 and the clamping plate 51, the initial distance between the outer sides of the clamping plate 51 and the positioning plate 2 is less than the internal length of the aluminum casing of the battery cell), so that the aluminum casing of the battery cell will not deform. After the testing equipment completes the upper end inspection, it controls the piston rods of the first cylinder 3 and the second cylinder 52 to retract. When the right side of the cylinder push plate of the second cylinder 52 contacts the limiting plate 12, the cylinder seat and the moving plate 5, along with the clamping plate 51, will move to the left. This makes the distance between the outer sides of the clamping plate 51 and the positioning plate 2 less than the internal length of the aluminum battery cell shell, facilitating the simultaneous placement of the aluminum battery cell shell on the positioning plate 2 and the clamping plate 51 next time. The other end of the aluminum battery cell shell can then be clamped following the same steps. This application makes clamping the aluminum battery cell shell more convenient.

[0018] The above are merely preferred embodiments of the present utility model and are 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 shall be included within the protection scope of the present utility model.

Claims

1. A measuring fixture for the opening of an aluminum casing of a battery cell, comprising a base (1), characterized in that: The base (1) has a positioning plate (2) on its top surface. A first cylinder (3) is provided on the outer side of the positioning plate (2). A recess (11) is provided on the side of the positioning plate (2) away from the first cylinder (3). A moving plate (5) is slidably connected in the recess (11). A clamping plate (51) is provided on the top surface of the moving plate (5) at one end near the positioning plate (2). A second cylinder (52) is provided on the top surface of the moving plate (5) on the side of the clamping plate (51) away from the positioning plate (2). The second cylinder (52) is a dual-axis cylinder. Limiting plates (12) are also provided on both sides of the base (1). One end of the limiting plate (12) extends between the cylinder seat and the cylinder push plate of the second cylinder (52). A control box (4) is provided on one side of the base (1).

2. The cell aluminum can mouth measuring fixture of claim 1, wherein: The positioning plate (2) has chamfers on both sides of its top.

3. The cell can end measurement fixture of claim 1, wherein: The top two sides of the clamp (51) are chamfered.

4. The cell aluminum can mouth measuring fixture according to any one of claims 1-3, characterized in that: The recessed platform (11) has a first groove (111) on both sides, and the movable plate (5) has a second groove (53) on both sides. The cross-sections of the first groove (111) and the second groove (53) are arc-shaped and multiple balls are arranged between them.

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