A device for detecting tensile strength of a lithium battery separator

Abstract

The utility model relates to a kind of lithium battery diaphragm tensile strength detection device, in actual diaphragm detection process, the diaphragm to be detected both ends are fixed by clamping mechanism, the pressure holding piece is placed above diaphragm, and is pressed in diaphragm middle part, the tensile gravity is the gravity of tensile mechanism itself at this time, when the gravity of tensile mechanism needs to be increased, lift assembly can be operated, so that lift assembly moves the adsorbed block at the uppermost of lift assembly to the adsorption assembly position at the uppermost of weighting groove, then adsorption assembly is operated, so that adsorption assembly adsorbs the adsorbed block, then lift assembly resets the remaining adsorbed block, after resetting is completed, the diaphragm bearing tensile state is observed, if it needs to be added weight, continue the above process, so that lift assembly drives the adsorbed block at the uppermost to move to the next adsorption assembly and be adsorbed and added weight, so as to observe diaphragm rupture under how much weight.

Description

Technical Field

[0001] This utility model relates to the field of battery separator tensile strength testing technology, and in particular to a lithium battery separator tensile strength testing device. Background Technology

[0002] As we all know, battery technology has gone through four generations of development: lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and lithium-ion batteries. Battery performance has been continuously improved. As an important component of lithium-ion batteries, the performance indicators of the separator directly affect the performance of lithium-ion batteries. Therefore, it is indispensable to test the separator products produced in the actual production process in the factory.

[0003] Patent CN202120351819.8 discloses a battery separator strength testing device, including a base with a flat upper surface, a weight protective pad placed on the upper surface of the base, two adjustable height supports installed on the upper surface of the base, steel clamps with clamps connected to the two adjustable height supports, a perforated lightweight rod with a thin rope connected to the two steel clamps, and weights. However, this device cannot easily add weights during use, requiring operators to constantly observe the separator's condition before adding appropriate weights. This makes separator tensile strength testing labor-intensive and inconvenient. Utility Model Content

[0004] (a) Technical problems to be solved To address the aforementioned problems in the prior art, this utility model provides a lithium battery separator tensile strength testing device, which can more conveniently and efficiently apply weight during the battery separator testing process, reduce manual operation, and make the battery separator tensile strength testing smoother.

[0005] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by this utility model include: A lithium battery separator tensile strength testing device includes a housing, a clamping mechanism, a stretching mechanism, and a weight increasing mechanism. The clamping mechanism is provided on both sides of the housing and is used to clamp both ends of the separator. The stretching mechanism is connected to the middle of the separator, and the weight increasing mechanism is movably connected to the stretching mechanism. The stretching mechanism includes a holding member, a hanging rope, a weight block, and several sets of adsorption components. The holding member is pressed on the diaphragm. Both ends of the holding member are connected to the weight block through a hanging rope. The weight block has a weight groove in the middle. Several sets of adsorption components are arranged in the weight groove from top to bottom. The weight-increasing mechanism includes a lifting component and several adsorbed blocks. The lifting component is located below the weight-increasing groove and is connected to the lower part of the box. Several adsorbed blocks are stacked on the lifting component, and the adsorbed blocks are detachably connected to several sets of adsorption components.

[0006] Furthermore, the lifting assembly includes a first linear drive component, a lifting block, and a guard plate. The first linear drive component is connected to the housing and is linearly driven connected to the lifting block. A guard plate is provided on both sides of the lifting block. The adsorbed block is stacked on the lifting block and placed between the guard plates.

[0007] Furthermore, the clamping mechanism includes a bracket, a second linear drive member, a slide rod, and a pressure plate. The bracket is fixedly connected to the inside of the housing. A pressing part is provided on the upper part of the bracket. The pressure plate is slidably connected to the upper part of the housing through several slide rods. The pressure plate is movably connected to the pressing part. The second linear drive member is linearly driven connected to the pressure plate.

[0008] Furthermore, it also includes a first vision sensor, which is disposed on the top of the housing.

[0009] Furthermore, it also includes a second vision sensor, with one second vision sensor provided on each side of the bracket near the weight-increasing mechanism.

[0010] Furthermore, the bottom surface inside the box is covered with a sponge layer.

[0011] Furthermore, the housing is provided with an installation port, and a transparent door panel is hinged to the installation port.

[0012] Furthermore, it also includes a PLC controller, which is electrically connected to the clamping mechanism, the stretching mechanism, and the weight-increasing mechanism, respectively.

[0013] (III) Beneficial Effects The beneficial effects of this utility model are as follows: In the actual membrane testing process, the two ends of the membrane to be tested are fixed by a clamping mechanism. The pressing component is placed above the membrane and pressed into the middle of the membrane. At this time, the tensile gravity is the weight of the tensile mechanism itself. When it is necessary to increase the gravity of the tensile mechanism, the lifting component can be operated to move the uppermost adsorbed block of the lifting component to the position of the adsorption component at the top of the weighting tank. Then, the adsorption component is operated to adsorb the adsorbed block. After that, the lifting component resets the remaining adsorbed blocks. After the reset is completed, the tensile state of the membrane under load is observed. If it is necessary to add more weight, the above process is continued, so that the lifting component moves the uppermost adsorbed block to the next adsorption component for adsorption and weighting. This allows observation of the weight at which the membrane will break. This makes it more convenient and efficient to add weight during the battery membrane testing process, reduces manual operation, and makes the tensile strength test of the battery membrane smoother. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the lithium battery separator tensile strength testing device according to an embodiment of the present invention. Figure 2 This is a front view of the overall structure of the lithium battery separator tensile strength testing device according to an embodiment of the present invention. Figure 3 This is a cross-sectional view of the overall structure of the lithium battery separator tensile strength testing device according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the clamping mechanism, stretching mechanism, and weight increasing mechanism of the lithium battery separator tensile strength testing device according to an embodiment of the present invention. [Explanation of Labels in the Attached Image] 1. Transparent door panel; 2. Box body; 3. Clamping mechanism; 4. Stretching mechanism; 5. Weight increasing mechanism; 6. Sponge layer; 7. First vision sensor; 8. Second vision sensor; 9. Diaphragm; 10. Second linear drive component; 301. Slide rod; 302. Bracket; 303. Pressing part; 304. Pressing plate; 305. Hanging rope; 401. Pressing component; 402. Weight block; 403. Adsorption assembly; 404. Protective plate; 501. Lifting block; 502. First linear drive component; 503. Adsorbed block; 504. Detailed Implementation

[0015] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Please refer to Figures 1 to 4As shown, a lithium battery separator tensile strength testing device of the present invention includes a housing 2, a clamping mechanism 3, a stretching mechanism 4, and a weight increasing mechanism 5. The clamping mechanism 3 is provided on both sides inside the housing 2. The clamping mechanism 3 is used to clamp the two ends of the separator 9. The stretching mechanism 4 is connected to the middle of the separator 9. The weight increasing mechanism 5 is movably connected to the stretching mechanism 4. The stretching mechanism 4 includes a holding member 402, a hanging rope 401, a weight block 403, and several sets of adsorption components 404. The holding member 402 is pressed on the diaphragm 9. Both ends of the holding member 402 are connected to the weight block 403 through a hanging rope 401. The weight block 403 has a weight groove in the middle, and several sets of adsorption components 404 are arranged in the weight groove from top to bottom. The weight-increasing mechanism 5 includes a lifting component and several adsorbed blocks 504. The lifting component is located below the weight-increasing groove and is connected to the lower part of the box 2. Several adsorbed blocks 504 are stacked on the lifting component, and the adsorbed blocks 504 are detachably connected to several sets of adsorption components 404.

[0017] The working principle of this utility model is as follows: In the actual testing process of the diaphragm 9, the two ends of the diaphragm 9 to be tested are fixed by the clamping mechanism 3. The pressing member 402 is placed above the diaphragm 9 and pressed into the middle of the diaphragm 9. At this time, the tensile gravity is the weight of the tensile mechanism 4 itself. When it is necessary to increase the gravity of the tensile mechanism 4, the lifting component can be operated to move the uppermost adsorbed block 504 of the lifting component to the position of the adsorption component 404 at the top of the weighting groove. Then, the adsorption component 404 is operated to adsorb the adsorbed block 504. Then, the lifting component resets the remaining adsorbed blocks 504. After the reset is completed, the load-bearing tensile state of the diaphragm 9 is observed. If it is necessary to add more weight, the above process is continued to move the uppermost adsorbed block 504 to the next adsorption component 404 for adsorption and weighting, so as to observe the weight at which the diaphragm 9 will break.

[0018] Furthermore, the lifting assembly includes a first linear drive 503, a lifting block 502, and a guard plate 501. The first linear drive 503 is connected to the housing 2. The first linear drive 503 is linearly driven connected to the lifting block 502. A guard plate 501 is provided on both sides of the lifting block 502. The adsorbed block 504 is stacked on the lifting block 502 and placed between the guard plates 501.

[0019] As can be seen from the above description, when it is necessary to add the adsorbed block 504 to the weight block 403, the first linear drive 503 can be operated, so that the first linear drive 503 drives the adsorbed block 504 to rise and fall to a suitable position through the lifting block 502, and then the adsorption component 404 is operated, so that the adsorption component 404 adsorbs the adsorbed block 504, thereby achieving the purpose of increasing weight.

[0020] Furthermore, the clamping mechanism 3 includes a bracket 303, a second linear drive member 301, a slide rod 302, and a pressure plate 305. The bracket 303 is fixedly connected to the inside of the housing 2. A pressing part 304 is provided on the upper part of the bracket 303. The pressure plate 305 is slidably connected to the upper part of the housing 2 through several slide rods 302. The pressure plate 305 is movably connected to the pressing part 304. The second linear drive member 301 is linearly driven connected to the pressure plate 305.

[0021] As can be seen from the above description, when it is necessary to fix both ends of the diaphragm 9, the two ends of the diaphragm 9 can be placed on the pressing part 304 on the bracket 303 respectively. Then, the second linear drive 301 is operated, so that the second linear drive 301 drives the pressure plate 305 to press the diaphragm 9. The diaphragm 9 is fixed with the cooperation of the pressing part 304 and the pressure plate 305, which facilitates the subsequent stretching of the middle part of the diaphragm 9.

[0022] Furthermore, it also includes a first vision sensor 7, which is disposed on the top of the housing 2.

[0023] As can be seen from the above description, it is beneficial to better observe the cracking state of the upper surface of the diaphragm 9 through the first visual sensor 7, so as to better determine whether it is necessary to increase the weight.

[0024] Furthermore, it also includes a second vision sensor 8, with a second vision sensor 8 provided on each side of the bracket 303 near the weight increasing mechanism 5.

[0025] As can be seen from the above description, it is beneficial to better observe the cracking state of the lower surface of the diaphragm 9 through the second vision sensor 8, so as to better determine whether it is necessary to increase the weight.

[0026] Furthermore, the bottom surface inside the box 2 is covered with a sponge layer 6.

[0027] As can be seen from the above description, it helps to prevent the stretching mechanism 4 from falling into the box 2 and causing damage after the diaphragm 9 breaks.

[0028] Furthermore, the housing 2 is provided with an installation port, and a transparent door panel 1 is hinged to the installation port.

[0029] As can be seen from the above description, it is beneficial for operators to observe the stretching inside the box 2 through the transparent door panel 1, and to install the diaphragm 9 through the installation port.

[0030] Furthermore, it also includes a PLC controller, which is electrically connected to the clamping mechanism 3, the stretching mechanism 4 and the weight increasing mechanism 5 respectively.

[0031] As can be seen from the above description, it is beneficial to adjust the parameters of the lithium battery separator 9 tensile strength testing device through the PLC controller, and to make it more convenient for operators to operate the lithium battery separator 9 tensile strength testing device. Example 1

[0032] Please refer to Figures 1 to 4 A lithium battery separator 9 tensile strength testing device includes a housing 2, a clamping mechanism 3, a stretching mechanism 4, and a weight increasing mechanism 5. The clamping mechanism 3 is provided on both sides inside the housing 2. The clamping mechanism 3 is used to clamp the two ends of the separator 9. The stretching mechanism 4 is connected to the middle of the separator 9. The weight increasing mechanism 5 is movably connected to the stretching mechanism 4. The stretching mechanism 4 includes a holding member 402, a hanging rope 401, a weight block 403, and several sets of adsorption components 404. The holding member 402 is pressed on the diaphragm 9. Both ends of the holding member 402 are connected to the weight block 403 through a hanging rope 401. The weight block 403 has a weight groove in the middle, and several sets of adsorption components 404 are arranged in the weight groove from top to bottom. The adsorption component 404 uses an electromagnetic suction plate; One end of the suspension rope 401 is provided with a bolt, and the clamping member 402 is provided with a bolt hole that matches the bolt. The bolt and the bolt hole are detachably connected, which is beneficial to press the clamping block on the diaphragm 9 more effectively. The weight increasing mechanism 5 includes a lifting component and several adsorbed blocks 504. The lifting component is located below the weighting groove and is connected to the lower part of the box 2. Several adsorbed blocks 504 are stacked on the lifting component, and the adsorbed blocks 504 are detachably connected to several sets of adsorption components 404. The adsorbed block 504 is a metal block that can be adsorbed by an electromagnetic absorbing plate; The weight of the adsorbed block 504 can be set in various specifications. In order to better test the tensile strength of the diaphragm 9, the weight of the adsorbed block 504 can be gradually reduced from top to bottom on the lifting block 502. The lifting assembly includes a first linear drive 503, a lifting block 502, and a guard plate 501. The first linear drive 503 is connected to the housing 2. The first linear drive 503 is linearly driven connected to the lifting block 502. A guard plate 501 is provided on both sides of the lifting block 502. The adsorbed block 504 is stacked on the lifting block 502 and placed between the guard plates 501. The first linear drive component 503 is a cylinder; The clamping mechanism 3 includes a bracket 303, a second linear drive 301, a slide bar 302, and a pressure plate 305. The bracket 303 is fixedly connected to the inside of the housing 2. A pressing part 304 is provided on the upper part of the bracket 303. The pressure plate 305 is slidably connected to the upper part of the housing 2 through several slide bars 302. The pressure plate 305 is movably connected to the pressing part 304. The second linear drive 301 is linearly driven connected to the pressure plate 305. The second linear drive component 301 is an electric cylinder; It also includes a first vision sensor 7, which is provided on the top of the housing 2; It also includes a second vision sensor 8, and each of the brackets 303 is provided with a second vision sensor 8 on the side near the weight increasing mechanism 5; The bottom surface inside the box 2 is covered with a sponge layer 6; The housing 2 is provided with an installation port, and a transparent door panel 1 is hinged to the installation port by a hinge. It also includes a PLC controller, which is electrically connected to the clamping mechanism 3, the stretching mechanism 4 and the weight increasing mechanism 5 respectively; The PLC controller is a Siemens SL-1200, and it is electrically connected to the first linear drive 503, the second linear drive 301, several sets of adsorption components 404, the first vision sensor 7, and the second vision sensor 8.

[0033] The above describes the basic principles, main features, and advantages of this utility model. All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be detailed here.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for detecting tensile strength of a lithium battery separator, characterized by: The device includes a housing, a clamping mechanism, a stretching mechanism, and a weight-increasing mechanism. The clamping mechanism is provided on both sides of the housing, and the clamping mechanism is used to clamp both ends of the diaphragm. The stretching mechanism is connected to the middle of the diaphragm, and the weight-increasing mechanism is movably connected to the stretching mechanism. The stretching mechanism includes a holding member, a hanging rope, a weight block, and several sets of adsorption components. The holding member is pressed on the diaphragm. Both ends of the holding member are connected to the weight block through a hanging rope. The weight block has a weight groove in the middle. Several sets of adsorption components are arranged in the weight groove from top to bottom. The weight-increasing mechanism includes a lifting component and several adsorbed blocks. The lifting component is located below the weight-increasing groove and is connected to the lower part of the box. Several adsorbed blocks are stacked on the lifting component, and the adsorbed blocks are detachably connected to several sets of adsorption components.

2. The lithium battery separator tensile strength testing device as described in claim 1, characterized in that: The lifting assembly includes a first linear drive, a lifting block, and a guard plate. The first linear drive is connected to the housing and is linearly driven to the lifting block. A guard plate is provided on both sides of the lifting block. The adsorbed block is stacked on the lifting block and placed between the guard plates.

3. The lithium battery separator tensile strength testing device as described in claim 1, characterized in that: The clamping mechanism includes a bracket, a second linear drive, a slide bar, and a pressure plate. The bracket is fixedly connected to the inside of the housing. A pressing part is provided on the upper part of the bracket. The pressure plate is slidably connected to the upper part of the housing through several slide bars. The pressure plate is movably connected to the pressing part. The second linear drive is linearly driven connected to the pressure plate.

4. The lithium battery separator tensile strength testing device as described in claim 1, characterized in that: It also includes a first vision sensor, which is disposed on the top of the housing.

5. The lithium battery separator tensile strength testing device as described in claim 3, characterized in that: It also includes a second vision sensor, with one second vision sensor provided on each side of the bracket near the weight-increasing mechanism.

6. The lithium battery separator tensile strength testing device as described in claim 1, characterized in that: The bottom surface inside the box is covered with a sponge layer.

7. The lithium battery separator tensile strength testing device as described in claim 1, characterized in that: The housing is provided with an installation port, and a transparent door panel is hinged to the installation port.

8. The lithium battery separator tensile strength testing device as described in claim 1, characterized in that: It also includes a PLC controller, which is electrically connected to the clamping mechanism, the stretching mechanism and the weight increasing mechanism respectively.

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