Battery plastic shell strength detection device

Abstract

The utility model relates to the technical field of battery production detection, in particular to a battery plastic shell strength detection device which comprises a collision ball used for carrying out collision detection on a battery plastic shell, the collision ball is rotationally installed on a rotating rod through a connecting assembly, and a pulling rope is arranged on the connecting assembly in a matched mode. By using the collision ball, the collision ball is rotated to the highest end through the traction rope, the collision ball is released when having certain gravitational potential energy, under the action of the gravitational potential energy, the collision ball has certain collision force, meanwhile, secondary collision can be generated under the action of resilience force and the like, and the collision effect is improved. In this way, actual impact can be simulated, the strength detection precision of the battery plastic shell is further ensured, and accurate detection of the battery plastic shell is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production and detection, and specifically relates to a device for detecting the strength of a battery plastic shell. Background Art

[0002] The hardness detection of the battery shell is an important link to ensure the safety and performance of the battery. With the rapid development of battery technology, the battery shell not only plays a role in protecting the internal sensitive materials, but also has a direct impact on the overall performance of the battery. Therefore, it is necessary to ensure that the hardness of the battery shell meets the design requirements.

[0003] For example, in the patent document with the application number: 202221086443.3, a device for detecting the strength of a lead graphene energy storage battery plastic shell is disclosed, and it is specifically disclosed that by setting a detachable planar detection block and a corner detection block, any position of the shell can be accurately detected.

[0004] In the above technical solution, by publicly using a laterally moving detachable planar detection block and a corner detection block to detect the strength of the battery shell, but this detection method is controlled by a moving component, such as a telescopic rod, a hydraulic cylinder, etc., and it cannot simulate the impact force and buffer force generated in an actual impact, resulting in that this strength detection cannot simulate the actual impact in reality, and there is a deviation between the impact by the detachable planar detection block and the corner detection block and the actual impact. Content of the Utility Model

[0005] The technical problem solved by the utility model is: to solve the problem that there is a deviation between the result obtained by using a detachable planar detection block and a corner detection block to impact the battery plastic shell and the actual impact in the prior art.

[0006] The utility model can be realized by the following technical solutions: a device for detecting the strength of a battery plastic shell, including a collision ball for impact detection of the battery plastic shell, the collision ball is rotatably installed on a rotating rod through a connecting component, and a traction rope is cooperatively arranged on the connecting component.

[0007] A further technical improvement of the utility model lies in that: a connecting base is fixed on the collision ball, and a first rotation limiting rod is rotatably arranged at the end of the rotating rod, and the first rotation limiting rod is rotatably connected with the connecting base.

[0008] A further technical improvement of the utility model lies in that: a fixing rod is rotatably arranged on the first rotation limiting rod, and a cooperating component for cooperating with the traction rope is arranged on the fixing rod.

[0009] A further technical improvement of the utility model lies in that: the cooperating component includes a hook column and a limiting hook, the hook column is fixed on the fixing rod, and the end of the traction rope is fixed with a limiting hook for cooperating with the hook column.

[0010] A further technical improvement of the present utility model lies in that: the end of the towing rope is wound around the winding roller, and the towing rope is guided by the adjusting roller.

[0011] A further technical improvement of the present utility model lies in that: the adjusting roller is rotatably installed on the movable adjusting base, and the distance between the movable adjusting base and the winding roller is adjustable.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] 1. By using the collision ball in this application, the collision ball is rotated to the highest end through the towing rope, and when the collision ball has a certain gravitational potential energy, it is released. Under the action of the gravitational potential energy, the collision ball has a certain impact force, and at the same time, it will also produce a secondary impact under the action of the resilience, etc., so as to simulate the actual impact, further ensure the accuracy of the strength detection of the battery plastic shell, and realize the accurate detection of the battery plastic shell.

[0014] 2. By adopting the connection base and the first rotation limiting rod in this application, the collision ball can be rotationally arranged, avoiding the problem of the rotation rod breaking caused by a large impact force when the collision ball and the rotation rod are fixedly connected, thereby ensuring the service life of the collision ball and reducing the replacement efficiency of the collision ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the position of the collision ball of the present utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the matching components of the present utility model;

[0018] Figure 3 It is a schematic diagram of the position where the collision ball of the present utility model is pulled up;

[0019] Figure 4 It is a schematic diagram of the structure of the connection components of the present utility model.

[0020] In the figure: 1. Collision ball; 2. Rotation rod; 3. Adjusting roller; 4. Movable adjusting base; 5. Winding motor; 6. Winding roller; 7. Towing rope; 8. Connection components; 9. Hook column; 10. Limiting hook; 11. First rotation limiting rod; 12. Connection base; 13. Fixed rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To further elaborate on the technical means and effects adopted by the present utility model to achieve the intended utility model purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, detail the specific implementation manners, structures, features and their effects according to the present utility model as follows.

[0022] Please refer to Figures 1-4 As shown, a battery plastic shell strength detection device includes a collision ball 1 for performing impact detection on the battery plastic shell. The collision ball 1 is rotatably installed on a rotating rod 2 through a connecting component 8, and the rotating rod 2 is rotatably installed on a frame. During use, by controlling the height of the collision ball 1, the collision ball 1 naturally hangs down under the action of gravity. Under the action of gravitational potential energy, the collision ball 1 directly impacts the battery plastic shell. At this time, after the collision ball 1 impacts the battery plastic shell, a rebound force will cause it to bounce up, and then it will be impacted again under the action of gravitational potential energy. The possibility of multiple impacts is relatively high, so that it can simulate the impacts that may occur under normal circumstances. Moreover, in this application, the collision ball 1 and the connecting component 8 are detachably connected, and collision balls 1 of different masses can be replaced, so that the impact forces generated by collision balls 1 of different masses are different, which is convenient for simulating various situations to simulate the impacts in different scenarios.

[0023] Therefore, in this application, the connecting component 8 includes a first rotation limiting rod 11, a connecting base 12 and a fixing rod 13. The first rotation limiting rod 11 is rotatably installed at the end of the rotating rod 2, and at the same time, the first rotation limiting rod 11 and the connecting base 12 are rotatably connected. The connecting base 12 is fixedly installed on the collision ball 1, so as to achieve that when the rotating rod 2 rotates to a certain angle, under the action of gravity, the collision ball 1 can naturally hang down under the action of the first rotation limiting rod 11. When an impact force is generated, under the action of the first rotation limiting rod 11, part of the collision force of the collision ball 1 is buffered, avoiding the fracture of the fixed connection part between the collision ball 1 and the rotating rod 2 when the collision ball 1 and the rotating rod 2 are fixedly connected, which affects the detection life of the collision ball 1; at the same time, a fixing rod 13 is rotatably arranged outside the first rotation limiting rod 11, and a matching component for cooperating with a traction rope 7 is arranged on the fixing rod 13. The matching component can be connected to the output end of the traction rope 7. During use, by using the winding action of the traction rope 7, the height control of the connecting component 8 is realized, so that the height of the end of the rotating rod 2 close to the collision ball 1 can be adjusted, enabling the collision ball 1 to have a certain potential energy, which is convenient for generating a large impact force when the collision ball 1 breaks away, so as to simulate the impact on the battery plastic shell.

[0024] Specifically, the cooperating components include a hook post 9 and a limiting hook 10. Among them, the hook post 9 is fixed between the fixed rods 13, and the limiting hook 10 is fixed at the end of the traction rope 7. The hook post 9 and the limiting hook 10 cooperate. During use, the vertically placed limiting hook 10 can be longitudinally stuck on the hook post 9, so that the traction rope 7 is tightened in this case, thereby enabling the connection between the limiting hook 10 and the hook post 9. Subsequently, when the traction rope 7 drives the limiting hook 10 to move, the limiting hook 10 is always maintained in a vertical position to achieve the mating connection between the limiting hook 10 and the hook post 9, ensuring the stability of their connection. When it is necessary to release the collision ball 1, in this application, the direction of the limiting hook 10 is inclined. Under the action of gravity, the hook post 9 bears a large gravitational potential energy. Therefore, when the limiting hook 10 gradually disengages from the hook post 9, the collision ball 1 directly generates an impact under the action of gravity, thereby enabling the simulation impact on the battery plastic shell to obtain relatively accurate battery plastic shell hardness parameters.

[0025] In order to adjust the positions of the limiting hook 10 and the hook post 9 to achieve the cooperation and disengagement between the limiting hook 10 and the hook post 9, in this application, an adjusting roller 3 and a winding roller 6 are further included. Among them, the winding roller 6 is installed at the output end of the winding motor 5. The winding motor 5 drives the winding roller 6 to rotate. At this time, the traction rope 7 is wound around the winding roller 6, and the winding of the traction rope 7 is realized by the rotation of the winding roller 6. And the traction rope 7 is guided by the adjusting roller 3. The limiting hook 10 is fixed at the end of the traction rope 7. The adjusting roller 3 is rotatably installed on the moving adjustment base 4, and the lateral position of the moving adjustment base 4 is adjustable. Therefore, during use, by adjusting the position of the moving adjustment base 4, the limiting hook 10 and the hook post 9 can be controlled to be at a relatively stable angle longitudinally, so that the collision ball 1 at the end of the rotating rod 2 is gradually pulled up until it is pulled to the set end. At this time, the moving adjustment base 4 continues to move, and at the same time, the winding roller 6 rotates slowly, gradually realizing the winding of the traction rope 7. At this time, the deviation angle between the limiting hook 10 and the hook post 9 becomes larger and larger until the limiting hook 10 and the hook post 9 are disengaged, realizing the release of the collision ball 1, and using the collision ball 1 to simulate the impact on the battery plastic shell to obtain relatively accurate impact parameters.

[0026] The moving adjustment base 4 in this application is fixedly installed on the lateral moving component, and the lateral moving component is installed on the frame. The lateral moving component can use a lead screw component to control the lateral movement of the moving adjustment base 4, or can drive the moving adjustment base 4 to perform lateral horizontal movement by using a conveyor belt, realizing the control of the distance between the moving adjustment base 4 and the winding roller 6, thereby realizing the stable control of the relative positions of the limiting hook 10 and the hook post 9.

[0027] When the utility model is in use, by adjusting the position of the moving adjustment base 4, the relative angle between the limiting hook 10 and the hook column 9 in the longitudinal direction is controlled to be relatively stable, so as to gradually pull up the collision ball 1 at the end of the rotating rod 2. When the collision ball 1 is pulled to the set end, the moving adjustment base 4 continues to move, and at the same time, the winding roller 6 slowly rotates to gradually wind up the traction rope 7. At this time, the deviation angle between the limiting hook 10 and the hook column 9 becomes larger and larger until the limiting hook 10 and the hook column 9 are disengaged, realizing the release of the collision ball 1. The collision ball 1 is used to simulate the impact on the battery plastic shell to obtain more accurate impact parameters;

[0028] When the rotating rod 2 rotates continuously, under the action of the connecting component 8, the collision ball 1 maintains a vertically downward state. When the impact force is generated, under the action of the first rotating limiting rod 11, part of the impact force of the collision ball 1 is buffered, avoiding the fracture of the fixed connection part between the collision ball 1 and the rotating rod 2 under the premise that the collision ball 1 and the rotating rod 2 are fixedly connected, which affects the detection life of the collision ball 1.

[0029] The above is only a preferred embodiment of the present utility model, and does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A battery plastic shell strength detection device, characterized in that: It includes a collision ball (1) for impact detection of a battery plastic case. The collision ball (1) is rotatably mounted on a rotating rod (2) through a connecting component (8), and a traction rope (7) is cooperatively arranged on the connecting component (8).

2. The strength detection device for a battery plastic shell according to claim 1, wherein, A connecting base (12) is fixed on the collision ball (1). A first rotation limiting rod (11) is rotatably arranged at the end of the rotating rod (2), and the first rotation limiting rod (11) is rotatably connected to the connecting base (12).

3. The strength detection device for a battery plastic shell according to claim 2, characterized in that, A fixing rod (13) is rotatably arranged on the first rotation limiting rod (11), and a cooperating component for cooperating with the traction rope (7) is arranged on the fixing rod (13).

4. The battery plastic shell strength detection device according to claim 3, characterized in that, The cooperating component includes a hook column (9) and a limiting hook (10). The hook column (9) is fixed on the fixing rod (13), and a limiting hook (10) for cooperating with the hook column (9) is fixed at the end of the traction rope (7).

5. The strength detection device for the battery plastic shell according to claim 1, characterized in that, The end of the traction rope (7) is wound around a winding roller (6), and the traction rope (7) is guided by an adjusting roller (3).

6. The strength detection device for a battery plastic shell according to claim 5, characterized in that, The adjusting roller (3) is rotatably mounted on a moving adjustment base (4), and the distance between the moving adjustment base (4) and the winding roller (6) is adjustable.

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