Lithium battery compression resistance detection device

Abstract

The utility model discloses a lithium battery compression resistance detection device, which belongs to the technical field of lithium batteries and comprises a working plate, a support is fixedly mounted on the lower surface of the working plate, a through hole is formed in the surface of the working plate, a partition plate is fixedly connected to the upper surface of the working plate, and the partition plate is arranged on the side face of the through hole. The vertical plate is fixedly connected to the upper surface of the working plate, and a transverse plate is fixedly connected to the upper surface of the vertical plate; and the connecting shaft is rotationally arranged in the disc, and a handle is fixedly connected to the upper surface of the connecting shaft. When the lithium battery compression resistance detection device works, a to-be-detected mobile phone lithium battery is placed on the working plate and covers a through hole, a motor is started at the same time, the motor drives a transmission shaft and a disc to rotate, at the moment, a movable frame does reciprocating rectilinear motion in the vertical direction under the action of a long pin, a limiting rod and a transverse plate, and then a pressure rod extrudes the lithium battery again and again; finally, the purpose of testing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and specifically relates to a compressive detection device for lithium batteries. Background Technique

[0002] The lithium battery of a mobile phone is the energy source of the mobile phone. Compared with nickel-cadmium batteries or nickel-metal hydride batteries, lithium batteries have the advantages of long life, high stability, and are also lightweight, compact and environmentally friendly.

[0003] During the production process of mobile phone lithium batteries, it is necessary to perform compressive detection on the lithium batteries, which is an indispensable part of the production process of mobile phone lithium batteries. The compressive detection of mobile phone lithium batteries can test how much external pressure the lithium batteries can withstand, avoiding the occurrence of fire during the later use of the lithium batteries.

[0004] For example, a compressive detection device for lithium battery processing with the application number CN202211438897.7 includes a detection box. There is a turntable inside the detection box. A plurality of evenly arranged pressing blocks are fixedly installed on the side wall of the turntable. A driving box is fixedly installed at the bottom of the detection box. A driving component for driving the turntable to move downward is installed inside the driving box. The driving component drives the pressing blocks to move downward through the turntable to press the lithium battery. A rotating component connected to the turntable is installed inside the detection box. The rotating component drives the turntable to rotate, so that different pressing blocks are arranged downward. When the second gear rotates, the second gear drives the worm fixed to it to rotate. Because the worm meshes with the worm gear, the worm can drive the lower worm gear to rotate. The rotating worm gear drives the turntable on one side to rotate, so that different pressing blocks installed on the turntable are aligned with the lithium battery below. Through the extrusion of different-shaped pressing blocks, the performance of the lithium battery can be fully tested.

[0005] Another example is a compressive detection device for lithium batteries with the application number CN202020021454.8, including a pressure detection box, support legs, shock-absorbing bases, lower protective shells, waste chip extraction holes, a pressure test disk structure that can buffer, a collection box, a protective door, an observation window, a control board, a touch screen, a central processing unit, a lithium battery body, a support mesh plate, support rods, a tightening disk, tightening rods, internal threaded tubes, and adjusting handwheels. In the utility model, the lithium battery to be detected is placed on the upper part of the support mesh plate. According to the different sizes of the lithium batteries, the adjusting handwheel is rotated to drive the tightening rod to rotate inside the internal threaded tube, so as to tighten the tightening disk on both sides of the lower part of the lithium battery, playing a role of restraint and fixation. Then the protective door is closed to play a role of shielding and protection, avoiding the splashing of waste chips generated during the pressure test. The waste chips generated during the test fall into the collection box through the gaps of the support mesh plate and can be cleaned regularly, maintaining a good processing environment.

[0006] During use, when applying pressure to the lithium battery, it is necessary to change the pressure magnitude to increase the test accuracy. However, the detection device in the above application does not have the function of quickly adjusting the pressure magnitude during operation, which leads to poor scientific nature of the test results and also results in greater limitations and lower flexibility in the use of the device.

[0007] In view of the above problems, there is an urgent need to innovate and design on the basis of the original lithium battery compressive strength detection device. Utility Model Content

[0008] The purpose of the present utility model is to provide a lithium battery compressive strength detection device to solve the problems proposed in the above background technology, that is, during operation, it does not have the function of quickly adjusting the pressure magnitude, which leads to poor scientific nature of the test results and also results in greater limitations and lower flexibility in the use of the device.

[0009] To achieve the above purpose, the present utility model provides the following technical solution: A lithium battery compressive strength detection device includes a working plate. A bracket is fixedly installed on the lower surface of the working plate, and through holes are formed on the surface of the working plate. A partition is fixedly connected to the upper surface of the working plate, and the partition is arranged on the side of the through hole.

[0010] A lithium battery compressive strength detection device further includes:

[0011] A vertical plate, which is fixedly connected to the upper surface of the working plate. A horizontal plate is fixedly connected to the upper surface of the vertical plate, and a motor is bolted to the surface of the vertical plate.

[0012] A transmission shaft, which is fixedly connected to the output end of the motor. A disc is fixedly connected to the end of the transmission shaft, and a long pin is slidably arranged inside the disc.

[0013] A movable frame, which is sleeved and connected to the surface of the long pin, and a pressure rod is fixedly connected to the lower surface of the movable frame.

[0014] A connecting shaft, which is rotatably arranged inside the disc, and a handle is fixedly connected to the upper surface of the connecting shaft.

[0015] Preferably, the movable frame is of a hollow structure, and a limiting rod is fixedly connected to the upper surface of the movable frame, and the limiting rod penetrates through the inside of the horizontal plate.

[0016] Preferably, the lower surface of the pressure rod is inclined.

[0017] Preferably, the connecting shaft penetrates through the inside of the long pin, and the connecting shaft is in threaded connection with the long pin, and a limiting piece is fixedly connected to the surface of the connecting shaft.

[0018] Preferably, a chute is formed on the surface of the disc, and the surface of the long pin is in fit with the inner wall of the chute.

[0019] Preferably, an extrusion block is slidably arranged inside the disc, and the extrusion blocks are symmetrically distributed about the center of the disc, and the ends of the extrusion blocks are arranged inside the chute.

[0020] Preferably, a return spring for elastic reset is fixedly connected to the surface of the extrusion block, and the other side of the return spring is fixedly connected to the inner wall of the disc, and the return spring is in a compressed state.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows: The lithium battery compression detection device adopts a novel structural design, and the specific content is as follows:

[0022] (1) When the lithium battery compression detection device works, the mobile phone lithium battery to be detected is placed on the working plate, the through hole is covered, and at the same time, the motor is started. The motor drives the transmission shaft and the disc to rotate. At this time, under the action of the long pin, the limiting rod and the cross plate, the movable frame makes a reciprocating linear motion in the vertical direction, and then the pressure rod will squeeze the lithium battery again and again, and finally the purpose of testing is achieved;

[0023] Furthermore, during the use process, the partition plate on the working plate prevents the lithium battery from moving, ensuring stability. At the same time, the limiting rod and the cross plate limit the moving path of the pressure rod, ensuring stability;

[0024] (2) When the lithium battery compression detection device needs to adjust the pressure intensity during the operation of the pressure rod, the position of the long pin on the disc can be adjusted. The specific operation is as follows: First, rotate the handle, and the handle drives the connecting shaft to rotate. When the connecting shaft rotates, it will drive the long pin to slide inside the chute, thereby changing the position of the long pin inside the chute, and finally changing the position of the long pin on the disc. At this time, when the disc rotates and the long pin drives the pressure rod to move, the maximum position where the pressure rod descends changes, that is, finally the pressure of the pressure rod changes;

[0025] Furthermore, when the connecting shaft rotates, it will drive the limiting piece to rotate synchronously inside the disc. The limiting piece prevents the connecting shaft from moving in the vertical direction, ensuring stability;

[0026] Even further, when the long pin works, under the action of the return spring, the extrusion block is always in fit with the surface of the long pin, thereby increasing the friction between the long pin and the extrusion block. At this time, the long pin and the connecting shaft will not rotate by themselves, and thus the long pin will not move by itself, ensuring stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the connection structure of the working plate and the partition plate of the present utility model;

[0028] Figure 2 Schematic diagram of the connection structure between the transmission shaft and the disc of the present utility model;

[0029] Figure 3 Schematic diagram of the partial section structure of the disc of the present utility model;

[0030] Figure 4 Of the present utility model Figure 3 Enlarged structure schematic diagram at position A in;

[0031] Figure 5 Schematic diagram of the connection structure between the extrusion block and the return spring of the present utility model;

[0032] Figure 6 Schematic diagram of the working state structure of the pressure rod of the present utility model.

[0033] In the figure: 1, working plate; 2, partition plate; 3, vertical plate; 4, horizontal plate; 5, motor; 6, transmission shaft; 7, disc; 8, long pin; 9, movable frame; 10, pressure rod; 11, limiting rod; 12, handle; 13, connecting shaft; 14, limiting piece; 15, extrusion block; 16, return spring; 17, through hole; 18, chute. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] Please refer to Figures 1 - 6 , the present utility model provides the following technical solutions: A lithium battery compression detection device:

[0036] Embodiment 1: By setting the motor 5 and the movable frame 9, drive the pressure rod 10 to work and complete the pressure detection work, as Figure 1 And Figure 2 Shown:

[0037] It includes a working plate 1, a bracket is fixedly installed on the lower surface of the working plate 1, a through hole 17 is opened on the surface of the working plate 1, and a partition plate 2 is fixedly connected to the upper surface of the working plate 1, and the partition plate 2 is arranged on the side of the through hole 17;

[0038] A lithium battery compression detection device further includes:

[0039] Vertical plate 3, the vertical plate 3 is fixedly connected to the upper surface of the working plate 1, and a horizontal plate 4 is fixedly connected to the upper surface of the vertical plate 3. Moreover, a motor 5 is bolted to the surface of the vertical plate 3, a transmission shaft 6, the transmission shaft 6 is fixedly connected to the output end of the motor 5, and a disc 7 is fixedly connected to the end of the transmission shaft 6. And a long pin 8 is slidably arranged inside the disc 7;

[0040] Movable frame 9, the movable frame 9 is sleeved and connected to the surface of the long pin 8, and a pressure rod 10 is fixedly connected to the lower surface of the movable frame 9, a connecting shaft 13, the connecting shaft 13 is rotatably arranged inside the disc 7, and a handle 12 is fixedly connected to the upper surface of the connecting shaft 13.

[0041] The movable frame 9 is of a hollow structure, and a limiting rod 11 is fixedly connected to the upper surface of the movable frame 9. And the limiting rod 11 penetrates through the inside of the horizontal plate 4. The lower surface of the pressure rod 10 is inclined.

[0042] During operation, place the mobile phone lithium battery to be tested on the working plate 1, cover the through hole 17, and at the same time start the motor 5. The motor 5 drives the transmission shaft 6 and the disc 7 to rotate. At this time, under the action of the long pin 8, the limiting rod 11 and the horizontal plate 4, the movable frame 9 makes a reciprocating linear motion in the vertical direction, and the movable frame 9 drives the pressure rod 10 to move synchronously. Furthermore, the pressure rod 10 will squeeze the lithium battery again and again, and finally the purpose of testing is achieved.

[0043] Embodiment 2: Different from Embodiment 1, by providing the connecting shaft 13, the long pin 8 can slide inside the chute 18, thereby changing the position of the long pin 8 inside the disc 7, and finally changing the working depth of the pressure rod 10, as Figure 3 and Figure 4 shown:

[0044] The connecting shaft 13 penetrates through the inside of the long pin 8, and the connecting shaft 13 is threadedly connected to the long pin 8. Moreover, a limiting piece 14 is fixedly connected to the surface of the connecting shaft 13. A chute 18 is formed on the surface of the disc 7, and the surface of the long pin 8 is in contact with the inner wall of the chute 18.

[0045] When it is necessary to adjust the pressure intensity during the operation of the pressure rod 10, the position of the long pin 8 on the disc 7 can be adjusted. The specific operation is to first rotate the handle 12. The handle 12 drives the connecting shaft 13 to rotate. When the connecting shaft 13 rotates, it will drive the long pin 8 to slide inside the chute 18, thereby changing the position of the long pin 8 inside the chute 18, and finally changing the position of the long pin 8 on the disc 7. At this time, when the disc 7 rotates, when the long pin 8 drives the pressure rod 10 to move, the maximum position where the pressure rod 10 descends changes, that is, finally the pressure magnitude during the operation of the pressure rod 10 is changed. And when the connecting shaft 13 rotates, it will drive the limiting piece 14 to rotate synchronously inside the disc 7. At this time, the limiting piece 14 prevents the connecting shaft 13 from moving in the vertical direction, ensuring stability.

[0046] Embodiment 3: Different from Embodiment 2, by providing the extrusion block 15, the long pin 8 is kept stable and will not self-slide, as Figure 5 and Figure 6 shown:

[0047] The extrusion block 15 is slidably arranged inside the disc 7, and the extrusion blocks 15 are symmetrically distributed about the center of the disc 7. The end of the extrusion block 15 is arranged inside the sliding groove 18. A return spring 16 for elastic reset is fixedly connected to the surface of the extrusion block 15, and the other side of the return spring 16 is fixedly connected to the inner wall of the disc 7, and the return spring 16 is in a compressed state.

[0048] When the long pin 8 works, under the action of the return spring 16, the extrusion block 15 always fits against the surface of the long pin 8, thereby increasing the friction between the long pin 8 and the extrusion block 15. At this time, neither the long pin 8 nor the connecting shaft 13 will self-rotate. Furthermore, the long pin 8 will not self-move inside the sliding groove 18, that is, the working depth of the pressure rod 10 is ensured and the stability is ensured.

[0049] The above is the working process of the entire device, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery pressure resistance detection device, comprising a working plate (1), a bracket being fixedly mounted on the lower surface of the working plate (1), a through hole (17) being opened on the surface of the working plate (1), and a partition (2) being fixedly connected to the upper surface of the working plate (1), and the partition (2) being arranged on the side of the through hole (17); It is characterized in that Also includes: A vertical plate (3), wherein the vertical plate (3) is fixedly connected to the upper surface of the working plate (1), and the upper surface of the vertical plate (3) is fixedly connected to a horizontal plate (4), and the surface of the vertical plate (3) is bolted to a motor (5); A transmission shaft (6), the transmission shaft (6) is fixedly connected to the output end of the motor (5), and a disc (7) is fixedly connected to the end of the transmission shaft (6), and a long pin (8) is slidably provided inside the disc (7); A movable frame (9), the movable frame (9) is sleeved and connected to the surface of the long pin (8), and a pressure rod (10) is fixedly connected to the lower surface of the movable frame (9); A connecting shaft (13) is rotatably arranged inside the disc (7), and a handle (12) is fixedly connected to the upper surface of the connecting shaft (13).

2. A lithium battery compression testing device according to claim 1, characterized in that: The movable frame (9) is a hollow structure, and the upper surface of the movable frame (9) is fixedly connected to a limiting rod (11), and the limiting rod (11) passes through the interior of the transverse plate (4).

3. A lithium battery compression testing device according to claim 1, characterized in that: The lower surface of the pressure rod (10) is inclined.

4. A lithium battery compression testing device according to claim 1, characterized in that: The connecting shaft (13) passes through the interior of the long pin (8), and the connecting shaft (13) and the long pin (8) are threadedly connected, and a limiting plate (14) is fixedly connected to the surface of the connecting shaft (13).

5. A lithium battery compression testing device according to claim 1, characterized in that: A sliding groove (18) is provided on the surface of the disc (7), and the surface of the long pin (8) is in contact with the inner wall of the sliding groove (18).

6. A lithium battery compression testing device according to claim 5, characterized in that: An extrusion block (15) is slidably arranged inside the disc (7), and the extrusion blocks (15) are symmetrically distributed about the center of the disc (7), and the ends of the extrusion blocks (15) are arranged inside the slide groove (18).

7. A lithium battery compression testing device according to claim 6, characterized in that: A return spring (16) having an elastic return function is fixedly connected to the surface of the extrusion block (15), and the other side of the return spring (16) is fixedly connected to the inner wall of the disc (7), and the return spring (16) is in an extruded state.

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