A device for detecting the puncture resistance performance of a lithium battery separator

Abstract

The present invention discloses a detection device for the puncture resistance performance of a lithium battery separator. Aiming at the problem that it is difficult to obtain the puncture performance of the separator when detecting the puncture point during puncture, the following scheme is proposed. It includes a rectangular frame. Two support rods are fixed on the outer wall of the top of the rectangular frame by bolts. Clamping mechanisms are arranged on the outer walls of the tops of the two support rods. A motorized slide rail is fixedly connected to the inner wall of the top of the rectangular frame. Two motorized sliders are slidably connected to the inner wall of the motorized slide rail. A fixing mechanism is arranged on the outer wall of the bottom of the two motorized sliders. A test needle and a detection needle are respectively arranged at both ends of the fixing mechanism. Two chutes are opened on the inner wall of the bottom of the rectangular frame. Clamping blocks are slidably connected to the inner walls of the two chutes. The present invention uses the viscosity of the upper mucosa clamping plate and the lower mucosa clamping plate to fix the separator. The cross plate moves through the clamping block. After the electromagnetic chuck disengages from adsorption, it can be fixed below the detection needle, which is convenient for pressure sensing.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery detection devices, and particularly to a device for detecting the puncture resistance of a lithium battery separator. Background Art

[0002] A lithium battery is a battery with a lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Therefore, this type of battery is also called a lithium metal battery. The separator mainly separates the positive and negative electrode plates of the battery in a narrow space to prevent the two electrodes from contacting and causing a short circuit. The separator should also have the ability to allow ions in the electrolyte to pass through. To measure the performance of the separator, a device for detecting the puncture resistance of the separator is required.

[0003] Most of the existing patents for a device for detecting the puncture resistance of a lithium battery separator on the market currently have the following deficiencies: When detecting the puncture resistance, the detection is carried out on the puncture point, and it is not easy to obtain the puncture performance of the separator. And the existing patents are not easy to solve such problems. Therefore, there is an urgent need for a device for detecting the puncture resistance of a lithium battery separator to solve the above problems. Summary of the Invention

[0004] Based on the technical problem that when detecting the puncture resistance of the existing device for detecting the puncture resistance of a lithium battery separator, the detection is carried out on the puncture point and it is not easy to obtain the puncture performance of the separator, the present invention proposes a device for detecting the puncture resistance of a lithium battery separator.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] A device for detecting the puncture resistance of a lithium battery separator includes a rectangular frame. Two support rods are fixed on the outer wall of the top of the rectangular frame by bolts. Clamping mechanisms are provided on the outer walls of the tops of the two support rods. A motorized slide rail is fixedly connected to the inner wall of the top of the rectangular frame. Two motorized sliders are slidably connected to the inner wall of the motorized slide rail. A fixing mechanism is provided on the outer wall of the bottom of the two motorized sliders. A test needle and a detection needle are respectively provided at both ends of the fixing mechanism. Two chutes are opened on the inner wall of the bottom of the rectangular frame. Two clamping blocks are slidably connected to the inner walls of the two chutes. An induction detection mechanism is provided on the outer wall of the top of the clamping blocks. The induction detection mechanism is connected to a computer.

[0007] As a further scheme of the present invention: The clamping mechanism includes a lower mucosal clamping plate, which is fixed on the outer wall of the top of the support rod by bolts, and a screw rod is inserted into the outer wall of the bottom of the lower mucosal clamping plate.

[0008] As a further scheme of the present invention: One end of the screw rod is sleeved with an upper mucosal clamping plate, and a nut is sleeved on the outer wall of the screw rod above the upper mucosal clamping plate.

[0009] As a further solution of the present invention: The fixing mechanism includes a hydraulic cylinder, the top end of the hydraulic cylinder is fixedly connected to the bottom outer wall of two electric sliders, one end of the extension rod of the hydraulic cylinder is fixedly connected to a fixing frame, and the fixing frame is in an inverted "V" shape.

[0010] As a further solution of the present invention: At positions near both ends of the inner wall of the fixing frame, clamping rods are fixedly connected, a plurality of connecting frames are fixedly connected to the bottom outer wall of the clamping rods, and a snap sleeve is fixedly connected to the outer wall of one side of the connecting frames.

[0011] As a further solution of the present invention: Vertical card slots are opened at positions of the snap sleeves near the clamping rods, horizontal card slots are opened at positions of the outer walls of the clamping rods near the snap sleeves, the test needle and the detection needle are respectively clamped in two snap sleeves located on the same horizontal straight line on both sides, and the test needle and the detection needle are fixedly connected to the same cross bar.

[0012] As a further solution of the present invention: The induction detection mechanism includes a cross plate, the cross plate is fixed to the top outer wall of two clamping blocks by bolts, an electromagnetic chuck is adsorbed on the top outer wall of the cross plate, a pressure sensor is fixedly connected to the top outer wall of the electromagnetic chuck, and at positions near both ends of the outer wall of one side of the fixing frame, a frame is fixedly connected, and one end of the frame is fixedly connected to the outer wall of one side of the cross plate.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. By setting up, the electric slide rail and the electric slide rail are used to complete the simultaneous movement of the test needle, the detection needle and the pressure sensor, which is convenient for moving the test needle to any position on the surface of the diaphragm for detection. At the same time, the test needle and the detection needle are integrally connected by a cross bar and clamped in the snap sleeves on the horizontal straight line. The position of the diaphragm can be changed by changing the snap sleeves, and the diaphragm is fixed by the viscosity of the upper mucosal clamping plate and the lower mucosal clamping plate to the diaphragm. The cross plate moves through the clamping blocks, and after the electromagnetic chuck is detached from the adsorption, it can be fixed below the detection needle for convenient pressure induction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional structural schematic diagram of a device for detecting the puncture resistance performance of a lithium battery diaphragm proposed by the present invention;

[0016] Figure 2 It is a structural schematic diagram of the fixing mechanism of a device for detecting the puncture resistance performance of a lithium battery diaphragm proposed by the present invention;

[0017] Figure 3 It is a partial three-dimensional structural schematic diagram of a device for detecting the puncture resistance performance of a lithium battery diaphragm proposed by the present invention;

[0018] Figure 4 is Figure 1Schematic diagram of the enlarged structure at position A

[0019] In the figure: 1 rectangular frame, 2 horizontal plate, 3 pressure sensor, 4 detection needle, 5 electric slide rail, 6 fixing frame, 7 electric slider, 8 hydraulic cylinder, 9 test needle, 10 upper mucosal clamping plate, 11 screw rod, 12 nut, 13 support rod, 14 lower mucosal clamping plate, 15 cross bar, 16 frame, 17 chute, 18 clamping block, 19 snap sleeve, 20 clamping rod, 21 vertical card slot, 22 horizontal card slot, 23 connecting frame, 24 electromagnetic chuck. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] Refer to Figures 1-4 , a device for detecting the puncture resistance of a lithium battery separator, including a rectangular frame 1. Two support rods 13 are fixed on the outer wall of the top of the rectangular frame 1 by bolts. Clamping mechanisms are provided on the outer walls of the tops of the two support rods 13. An electric slide rail 5 is fixedly connected to the inner wall of the top of the rectangular frame 1. Two electric sliders 7 are slidably connected to the inner wall of the electric slide rail 5. A fixing mechanism is provided on the outer wall of the bottom of the two electric sliders 7. A test needle 9 and a detection needle 4 are respectively provided at both ends of the fixing mechanism. Two chutes 17 are opened on the inner wall of the bottom of the rectangular frame 1. Two clamping blocks 18 are slidably connected to the inner walls of the two chutes 17. An induction detection mechanism is provided on the outer wall of the top of the clamping block 18. The induction detection mechanism is connected to a computer.

[0022] In the present invention, the clamping mechanism includes a lower mucosal clamping plate 14. The lower mucosal clamping plate 14 is fixed on the outer wall of the top of the support rod 13 by bolts. A screw rod 11 is inserted into the outer wall of the bottom of the lower mucosal clamping plate 14.

[0023] One end of the screw rod 11 is sleeved with an upper mucosal clamping plate 10. A nut 12 is sleeved on the outer wall of the screw rod 11 above the upper mucosal clamping plate 10. The diaphragm can be fixed by tightening the nut 12 on the outer wall of the screw rod 11.

[0024] The fixing mechanism includes a hydraulic cylinder 8. The top end of the hydraulic cylinder 8 is fixedly connected to the outer wall of the bottom of the two electric sliders 7. One end of the extension rod of the hydraulic cylinder 8 is fixedly connected to a fixing frame 6. The fixing frame 6 is in an inverted "V" shape.

[0025] Clamping rods 20 are fixedly connected to the positions near both ends of the inner wall of the fixing frame 6. A plurality of connecting frames 23 are fixedly connected to the outer wall of the bottom of the clamping rod 20. A snap sleeve 19 is fixedly connected to the outer wall of one side of the connecting frame 23. The snap sleeve 19 is used to clamp and fix the test needle 9 and the detection needle 4. The two ends of the cross bar 15 are respectively clamped and fixed in the horizontal card slots 22 and the vertical card slots 21 on both sides.

[0026] Vertical card slots 21 are provided at positions of the buckle sleeves 19 close to the card rods 20, and horizontal card slots 22 are provided at positions of the outer walls of the card rods 20 close to the buckle sleeves 19. The test needles 9 and the detection needles 4 are respectively clamped in two buckle sleeves 19 located on the same horizontal straight line on both sides, and the test needles 9 and the detection needles 4 are fixedly connected to the same cross bar 15.

[0027] The induction detection mechanism includes a cross plate 2. The cross plate 2 is fixed on the top outer walls of the two clamping blocks 18 by bolts. An electromagnetic chuck 24 is adsorbed on the top outer wall of the cross plate 2. A pressure sensor 3 is fixedly connected to the top outer wall of the electromagnetic chuck 24. Fixing frames 6 are fixedly connected to positions close to both ends of one side outer wall. One end of the fixing frame 16 is fixedly connected to one side outer wall of the cross plate 2. The pressure sensor 3 is located below the detection needle 4 and bears the puncture with the same pressure applied by the test needle 9, so as to facilitate obtaining the puncture pressure and the damage to the diaphragm.

[0028] During use, at an idle position of the device, all the above-mentioned driving parts, which refer to power elements, electrical parts and the adapted power supply, are connected by wires, and the electrical connection is completed in the order of the working sequence of each electrical part. The detailed connection means are well-known techniques in the art. Place the diaphragm between the upper mucosa clamping plate 10 and the lower mucosa clamping plate 14, and then tighten the nut 12 to make the upper mucosa clamping plate 10 and the lower mucosa clamping plate 14 clamp the diaphragm. Then start the electric slide rail 5. The electric slide rail 5 drives the two electric sliders 7 to move, and further makes the fixing frame 6 drive the test needle 9 and the detection needle 4 to move simultaneously. After the test needle 9 moves to a suitable position above the diaphragm, start the hydraulic cylinder 8 to make the two move downward. The test needle 9 presses on the diaphragm, and at the same time the detection needle 4 applies the same pressure to the pressure sensor 3, which is convenient for the user to observe the damage of the diaphragm and obtain the pressure value at the same time. When it is necessary to change the diaphragm detection position, hang the test needle 9 and the detection needle 4 in the buckle sleeves 19 on another horizontal straight line, and then loosen the electromagnetic chuck 24 and adsorb and fix it directly below the detection needle 4 to facilitate the continuation of the detection. Repeat the above steps to complete the detection of the tensile performance of the diaphragm.

[0029] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for detecting the puncture resistance of a lithium battery separator, comprising a rectangular frame (1), characterized in that, On the inner wall of the bottom of the rectangular frame (1), two support rods (13) are fixed by bolts. Clamping mechanisms are arranged on the outer walls of the tops of the two support rods (13). An electric slide rail (5) is fixedly connected to the inner wall of the top of the rectangular frame (1). Two electric sliders (7) are slidably connected to the inner wall of the electric slide rail (5). A fixing mechanism is arranged on the outer wall of the bottom of the two electric sliders (7). A test needle (9) and a detection needle (4) are respectively arranged at both ends of the fixing mechanism. Two chutes (17) are formed in the inner wall of the bottom of the rectangular frame (1). Two clamping blocks (18) are slidably connected to the inner walls of the two chutes (17). An induction detection mechanism is arranged on the outer wall of the top of the clamping block (18). The induction detection mechanism is connected to a computer; The fixing mechanism includes a hydraulic cylinder (8). The top end of the hydraulic cylinder (8) is fixedly connected to the outer wall of the bottom of the two electric sliders (7). One end of the extension rod of the hydraulic cylinder (8) is fixedly connected to a fixing frame (6). The fixing frame (6) is in an inverted "V" shape. Clamping rods (20) are fixedly connected to positions near both ends of the inner wall of the fixing frame (6). A plurality of connecting frames (23) are fixedly connected to the outer wall of the bottom of the clamping rod (20). A snap sleeve (19) is fixedly connected to one side outer wall of the connecting frame (23). Vertical card slots (21) are formed in positions of the snap sleeve (19) near the clamping rod (20). Horizontal card slots (22) are formed in positions of the outer wall of the clamping rod (20) near the snap sleeve (19). The test needle (9) and the detection needle (4) are respectively clamped in two snap sleeves (19) on the same horizontal straight line on both sides of the fixing frame (6). The test needle (9) and the detection needle (4) are fixedly connected to the same cross bar (15). The induction detection mechanism includes a cross plate (2). The cross plate (2) is fixed to the outer wall of the top of the two clamping blocks (18) by bolts. An electromagnetic chuck (24) is adsorbed on the outer wall of the top of the cross plate (2). A pressure sensor (3) is fixedly connected to the outer wall of the top of the electromagnetic chuck (24). Frameworks (16) are fixedly connected to positions near both ends of one side outer wall of the fixing frame (6). One end of the framework (16) is fixedly connected to one side outer wall of the cross plate (2); Start the electric slide rail (5). The electric slide rail (5) drives the two electric sliders (7) to move, so that the fixing frame (6) drives the test needle (9) and the detection needle (4) to move simultaneously. Start the hydraulic cylinder (8). The test needle (9) presses on the diaphragm, and at the same time, the detection needle (4) applies the same pressure to the pressure sensor (3).

2. The device for detecting the puncture resistance of a lithium battery separator according to claim 1, characterized in that, The clamping mechanism includes a lower mucosa clamping plate (14). The lower mucosa clamping plate (14) is fixed to the outer wall of the top of the support rod (13) by bolts. A screw rod (11) is inserted into the outer wall of the bottom of the lower mucosa clamping plate (14).

3. The device for detecting the puncture resistance of a lithium battery separator according to claim 2, characterized in that, One end of the screw rod (11) is sleeved with an upper mucosa clamping plate (10). A nut (12) is sleeved on the outer wall of the screw rod (11) above the upper mucosa clamping plate (10).

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