Pressing device for helium detection of square lithium battery

Abstract

The utility model discloses a pressing device for helium detection of a square lithium battery, which relates to the technical field of square lithium batteries and comprises a cavity. The pressing device for helium detection of the square lithium battery further comprises a pressing assembly, the bottom of the pressing assembly is fixedly connected with the bottom of the inner cavity of the cavity, and the pressing assembly is used for pressing the lithium battery; the pressing assembly comprises a rodless air cylinder, the bottom of the rodless air cylinder is fixedly connected with the bottom of an inner cavity of the cavity, a connecting plate is fixedly connected to the outer side of the rodless air cylinder, and a pressing mechanism is fixedly connected to the top of the connecting plate. And the bottom of the heightening assembly is fixedly connected with the bottom of the inner cavity of the cavity. According to the device, the large surface part of the lithium battery is clamped through the pressing assembly, the problem that a battery shell swells due to air pressure change during air tightness detection of the square lithium battery is solved, and during helium detection, the square lithium battery is fixed to the top of the heightening assembly and cannot deviate due to stress.

Description

Technical Field

[0001] The utility model relates to the technical field of square lithium batteries, in particular to a pressing device used for helium testing of square lithium batteries. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive and negative electrode materials and non-aqueous electrolyte solutions. Helium testing is a means of testing. The workpiece to be tested is evacuated and then filled with helium of a certain pressure. The outside of the workpiece to be tested is a vacuum box with a certain vacuum requirement. The vacuum box is connected to the leak detection port of the helium mass spectrometer leak detector.

[0003] In the prior art, there is a helium-detected lithium battery detection device with Chinese patent number CN213579966U, which includes a workbench and a detection support seat installed on the surface of the workbench, a battery detection seat is fixed on the top of the detection support seat, and sliding clamping rails are symmetrically installed on the left and right sides of the battery detection seat, and a sliding connecting seat is slidably installed on the outer side of the sliding clamping rail.

[0004] However, in the prior art, when performing air tightness testing on square lithium batteries, helium is generally used to test the batteries. During the helium test, the air pressure inside and outside the battery changes, and the battery shell will bulge due to the change in air pressure. In order to solve the above problem, we propose a clamping device for helium testing of square lithium batteries. Utility Model Content

[0005] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a clamping device for helium inspection of square lithium batteries, including a cavity; the clamping device for helium inspection of square lithium batteries also includes: a clamping assembly, the bottom of the clamping assembly is fixedly connected to the bottom of the inner cavity of the cavity, and the clamping assembly is used to clamp the lithium battery; the clamping assembly includes a rodless cylinder, the bottom of the rodless cylinder is fixedly connected to the bottom of the inner cavity of the cavity, the outer side of the rodless cylinder is fixedly connected with a connecting plate, and the top of the connecting plate is fixedly connected with a clamping mechanism; a cushioning assembly, the bottom of the cushioning assembly is fixedly connected to the bottom of the inner cavity of the cavity, and the cushioning assembly is used to cushion the lithium battery; a fixing assembly, the outer side of the fixing assembly is fixedly connected to the outer side of the cushioning assembly, and the fixing assembly is used to fix the lithium battery;

[0006] When in use, a clamping assembly is set up to clamp the large surface of the lithium battery, thereby solving the problem of bulging of the battery shell due to changes in air pressure during air tightness testing of the square lithium battery. During helium testing, the square lithium battery is fixed on the top of the cushioning assembly and will not be displaced by force.

[0007] Preferably, the clamping mechanism includes a clamping baffle, the bottom of the clamping baffle is fixedly connected to the top of the connecting plate, the inner side of the clamping baffle is fixedly connected to a rebound spring, the end of the rebound spring away from the clamping baffle is fixedly connected to a sliding plate, the outer side of the sliding plate is slidably connected to the inner side of the clamping baffle, and the clamping mechanism is provided to clamp the large surface of the lithium battery to prevent the battery casing from bulging due to changes in air pressure, and the clamping force of the clamping mechanism on the lithium battery is relatively gentle, and the lithium battery will not be damaged due to excessive force.

[0008] Preferably, the raising component includes a bottom raising block, the outer side of the bottom raising block is fixedly connected to the inner side of the cavity, the bottom of the inner cavity of the bottom raising block is fixedly connected to a telescopic rod, the top of the telescopic rod is fixedly connected to a raising plate, and the height of the lithium battery is adjusted by the raising component, and the lithium battery is moved to a height suitable for helium inspection, so that the device can adapt to lithium batteries of different specifications, thereby expanding the scope of application of the device.

[0009] Preferably, a fan is fixedly connected to the bottom of the inner cavity of the raising plate, a fixed disk assembly is fixedly connected to the top of the fan, and the outer side of the fixed disk assembly is fixedly connected to the inner side of the raising plate. By providing the raising assembly, the lithium battery is fixed to facilitate helium inspection of the lithium battery, and the raising assembly can adjust the height of the lithium battery, so that the device can adapt to lithium batteries of different specifications and has a wider range of applications.

[0010] Preferably, the fixed plate assembly includes a suction cup, the outer side of the suction cup is fixedly connected to the inner side of the raising plate, the inner side of the suction cup is fixedly connected to a fixing plate, the top of the fixing plate is fixedly connected to a round rod, the outer side of the round rod is slidably connected to a movable block, the outer side of the movable block is slidably connected to the inner side of the suction cup, and the lithium battery is fixed by the fixed plate assembly to prevent the lithium battery from moving during helium inspection and affecting the effect of the helium inspection.

[0011] Preferably, the fixing assembly includes a short side baffle, the bottom of the short side baffle is fixedly connected to the bottom of the inner cavity of the cavity, the outer side of the short side baffle is fixedly connected to the outer side of the pad block, the top of the short side baffle is fixedly connected to a guide plate, the inner side of the guide plate is rotatably connected to a guide roller, the square lithium battery is guided to move downward through the fixing assembly, the fixing assembly limits the range of movement of the lithium battery from both sides, and blocks the short sides of the square lithium battery.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The utility model provides a clamping mechanism to clamp the large surface of the lithium battery to prevent the battery shell from bulging due to changes in air pressure. The clamping force of the clamping mechanism on the lithium battery is relatively gentle, and the lithium battery will not be damaged due to excessive force.

[0014] 2. The utility model fixes the lithium battery by setting a cushioning component, which is convenient for helium inspection of the lithium battery. The cushioning component can adjust the height of the lithium battery, so that the device can adapt to lithium batteries of different specifications and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a structural sectional view of the clamping mechanism of the utility model;

[0018] Figure 4 It is a structural sectional view of the cushioning assembly of the utility model;

[0019] Figure 5 It is a structural cross-sectional view of the fixed disk assembly of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the fixing component of the utility model.

[0021] In the figure: 1. cavity; 2. raising assembly; 21. raising block; 22. telescopic rod; 23. raising plate; 24. fan; 25. fixed plate assembly; 251. suction cup; 252. fixed plate; 253. round rod; 254. movable block; 3. clamping assembly; 31. rodless cylinder; 32. connecting plate; 33. clamping mechanism; 331. clamping baffle; 332. rebound spring; 333. sliding plate; 4. fixing assembly; 41. short side baffle; 42. guide plate; 43. guide roller. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0023] Example:

[0024] See also Figure 1-Figure 6 , the utility model provides a technical solution: a clamping device for helium inspection of square lithium batteries, comprising a cavity 1;

[0025] The clamping device for helium inspection of square lithium batteries also includes: a clamping assembly 3, the bottom of the clamping assembly 3 is fixedly connected to the bottom of the inner cavity of the cavity 1, and the clamping assembly 3 is used to clamp the lithium battery; the clamping assembly 3 includes a rodless cylinder 31, the bottom of the rodless cylinder 31 is fixedly connected to the bottom of the inner cavity of the cavity 1, the outer side of the rodless cylinder 31 is fixedly connected with a connecting plate 32, and the top of the connecting plate 32 is fixedly connected with a clamping mechanism 33; a cushioning assembly 2, the bottom of the cushioning assembly 2 is fixedly connected to the bottom of the inner cavity of the cavity 1, and the cushioning assembly 2 is used to cushion the lithium battery; a fixing assembly 4, the outer side of the fixing assembly 4 is fixedly connected to the outer side of the cushioning assembly 2, and the fixing assembly 4 is used to fix the lithium battery;

[0026] When in use, the external manipulator module clamps the lithium battery and places the lithium battery on the top of the padding component 2. The fixing component 4 limits the range of movement of the lithium battery from both sides. The rodless cylinder 31 drives the connecting plate 32 to move toward the lithium battery. The connecting plate 32 drives the clamping mechanism 33 to approach the lithium battery. The clamping mechanism 33 clamps the large surface of the square lithium battery. After the square lithium battery is clamped, the helium inspection begins. After the helium inspection is completed, the rodless cylinder 31 drives the clamping mechanism 33 to release the square lithium battery, and then the manipulator takes away the lithium battery.

[0027] When in use, by setting up a clamping component 3 to clamp the large surface of the lithium battery, the problem of bulging of the battery shell due to changes in air pressure during the air tightness test of the square lithium battery is solved. During the helium test, the square lithium battery is fixed on the top of the cushioning component 2 and will not be displaced by force.

[0028] The clamping mechanism 33 includes a clamping baffle 331, the bottom of the clamping baffle 331 is fixedly connected to the top of the connecting plate 32, the inner side of the clamping baffle 331 is fixedly connected to a rebound spring 332, the end of the rebound spring 332 away from the clamping baffle 331 is fixedly connected to a sliding plate 333, the outer side of the sliding plate 333 is slidably connected to the inner side of the clamping baffle 331, when in use, the connecting plate 32 drives the clamping baffle 331 to move toward the lithium battery, and the clamping baffle 331 drives the rebound spring 332 and The sliding plate 333 approaches the lithium battery, and the outer side of the sliding plate 333 contacts the lithium battery. The sliding plate 333 is subjected to the reaction force of the battery, which drives the rebound spring 332 to be compressed. Under the action of its own elastic force, the rebound spring 332 drives the sliding plate 333 to be tightly attached to the surface of the battery. By setting up the clamping mechanism 33, the large surface of the lithium battery is clamped to prevent the battery shell from bulging due to changes in air pressure. The clamping force of the clamping mechanism 33 on the lithium battery is relatively gentle, and the lithium battery will not be damaged due to excessive force.

[0029] The raising component 2 includes a bottom raising block 21, the outer side of the bottom raising block 21 is fixedly connected to the inner side of the cavity 1, the bottom of the inner cavity of the bottom raising block 21 is fixedly connected with a telescopic rod 22, and the top of the telescopic rod 22 is fixedly connected with a raising plate 23. When in use, the lithium battery is placed above the raising plate 23, and the telescopic rod 22 drives the raising plate 23 to move upward, and the raising plate 23 drives the lithium battery to move upward, so that the lithium battery moves to a suitable height. The height of the lithium battery is adjusted by the raising component 2, and the lithium battery is moved to a height suitable for helium inspection, so that the device can adapt to lithium batteries of different specifications, thereby expanding the scope of application of the device.

[0030] A fan 24 is fixedly connected to the bottom of the inner cavity of the raising plate 23, and a fixed disk assembly 25 is fixedly connected to the top of the fan 24. The outer side of the fixed disk assembly 25 is fixedly connected to the inner side of the raising plate 23. When in use, the lithium battery is placed above the raising plate 23, and the fixed disk assembly 25 fixes the lithium battery to prevent the lithium battery from moving. By setting the raising assembly 2, the lithium battery is fixed, which is convenient for helium inspection of the lithium battery. The raising assembly 2 can adjust the height of the lithium battery, so that the device can adapt to lithium batteries of different specifications and has a wider range of applications.

[0031] The fixed plate assembly 25 includes a suction cup 251, the outer side of the suction cup 251 is fixedly connected to the inner side of the padding plate 23, the inner side of the suction cup 251 is fixedly connected to a fixed plate 252, the top of the fixed plate 252 is fixedly connected to a round rod 253, the outer side of the round rod 253 is slidably connected to a movable block 254, the outer side of the movable block 254 is slidably connected to the inner side of the suction cup 251, when in use, the lithium battery is placed above the padding plate 23, the fan 24 drives the airflow inside the suction cup 251 to flow downward, and the movable block 254 moves downward along the round rod 253 The movable block 254 blocks the bottom of the suction cup 251, and the suction cup 251 sucks the lithium battery and fixes the lithium battery. After the helium inspection is completed, the fan 24 drives the airflow to move upward, and the airflow drives the movable block 254 to move upward. The movable block 254 moves to the top of the suction cup 251 and no longer blocks the suction cup 251. The air flows into the inside of the suction cup 251, and the air pressure inside the suction cup 251 increases. The suction cup 251 no longer sucks the lithium battery, and the lithium battery is fixed by the fixed plate assembly 25 to prevent the lithium battery from moving during the helium inspection and affecting the effect of the helium inspection.

[0032] The fixing assembly 4 includes a short side baffle 41, the bottom of the short side baffle 41 is fixedly connected to the bottom of the inner cavity of the cavity 1, the outer side of the short side baffle 41 is fixedly connected to the outer side of the pad block 21, the top of the short side baffle 41 is fixedly connected to a guide plate 42, the inner side of the guide plate 42 is rotatably connected to a guide roller 43, when in use, the manipulator drives the lithium battery to move downward, if the position of the lithium battery deviates, the lithium battery will contact the guide plate 42 when moving downward, the lithium battery moves downward along the guide plate 42, the lithium battery drives the guide roller 43 to rotate, the lithium battery moves to the middle of the two short side baffles 41, and moves downward along the short side baffles 41, and the square lithium battery is guided to move downward by the fixing assembly 4, the fixing assembly 4 limits the range of movement of the lithium battery from both sides, and blocks the short side of the square lithium battery.

[0033] Working principle:

[0034] When in use, the manipulator drives the lithium battery to move downward along the short side baffle 41, and the lithium battery moves downward to the top of the padding plate 23. The fan 24 drives the air flow inside the suction cup 251 to flow downward, and the movable block 254 blocks the bottom of the suction cup 251. The suction cup 251 sucks the lithium battery and fixes the lithium battery. The telescopic rod 22 drives the padding plate 23 and the lithium battery to move, so that the lithium battery moves to a suitable height. The rodless cylinder 31 drives the connecting plate 32 to move, and the connecting plate 32 drives the clamping baffle 331 to move. The clamping baffle 331 drives the rebound spring 332 and the sliding plate 333 to move, and the sliding plate 333 presses the large surface part of the lithium battery. After the square lithium battery is clamped, helium inspection begins. After the helium inspection is completed, the fan 24 drives the air flow to move upward, and the air flow drives the movable block 254 to move upward. The movable block 254 no longer blocks the suction cup 251, and the air flows into the inside of the suction cup 251. The suction cup 251 releases the lithium battery, and then the lithium battery is taken away by the manipulator.

[0035] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A clamping device for helium inspection of square lithium batteries, comprising: Cavity (1); It is characterized in that The clamping device for helium inspection of square lithium batteries also includes: A pressing assembly (3), the bottom of the pressing assembly (3) being fixedly connected to the bottom of the inner cavity of the cavity (1), and the pressing assembly (3) being used to press the lithium battery; The clamping assembly (3) comprises a rodless cylinder (31), the bottom of the rodless cylinder (31) is fixedly connected to the bottom of the inner cavity of the cavity (1), the outer side of the rodless cylinder (31) is fixedly connected to a connecting plate (32), and the top of the connecting plate (32) is fixedly connected to a clamping mechanism (33); A raising component (2), the bottom of the raising component (2) being fixedly connected to the bottom of the inner cavity of the cavity (1), and the raising component (2) being used to raise the lithium battery; A fixing component (4), the outer side of the fixing component (4) is fixedly connected to the outer side of the raising component (2), and the fixing component (4) is used to fix the lithium battery.

2. A clamping device for helium inspection of square lithium batteries according to claim 1, characterized in that: The clamping mechanism (33) comprises a clamping baffle (331), the bottom of which is fixedly connected to the top of the connecting plate (32), the inner side of which is fixedly connected to a rebound spring (332), the end of which is away from the clamping baffle (331) is fixedly connected to a sliding plate (333), and the outer side of the sliding plate (333) is slidably connected to the inner side of the clamping baffle (331).

3. The clamping device for helium inspection of square lithium batteries according to claim 1, characterized in that: The raising component (2) comprises a bottom raising block (21), the outer side of the bottom raising block (21) being fixedly connected to the inner side of the cavity (1), the bottom of the inner cavity of the bottom raising block (21) being fixedly connected to a telescopic rod (22), and the top end of the telescopic rod (22) being fixedly connected to a raising plate (23).

4. A clamping device for helium inspection of square lithium batteries according to claim 3, characterized in that: The bottom of the inner cavity of the raising plate (23) is fixedly connected to a fan (24), the top of the fan (24) is fixedly connected to a fixed disk assembly (25), and the outer side of the fixed disk assembly (25) is fixedly connected to the inner side of the raising plate (23).

5. A clamping device for helium inspection of square lithium batteries according to claim 4, characterized in that: The fixed plate assembly (25) comprises a suction cup (251), the outer side of the suction cup (251) is fixedly connected to the inner side of the padding plate (23), the inner side of the suction cup (251) is fixedly connected to a fixed plate (252), the top of the fixed plate (252) is fixedly connected to a round rod (253), the outer side of the round rod (253) is slidably connected to a movable block (254), and the outer side of the movable block (254) is slidably connected to the inner side of the suction cup (251).

6. The clamping device for helium inspection of square lithium batteries according to claim 3, characterized in that: The fixing assembly (4) comprises a short side baffle (41), the bottom of the short side baffle (41) is fixedly connected to the bottom of the inner cavity of the cavity (1), the outer side of the short side baffle (41) is fixedly connected to the outer side of the padding block (21), the top of the short side baffle (41) is fixedly connected to a guide plate (42), and the inner side of the guide plate (42) is rotatably connected to a guide roller (43).

Images