A battery pole piece flexibility testing device

Abstract

The application discloses a kind of battery pole piece flexibility test device, belong to battery pole piece flexibility test technical field, it includes bottom plate, the bottom plate is fixedly connected with side wall, the wall surface of side wall is provided with scale value, side wall is opened with guide slot, the inside sliding connection of guide slot has sliding assembly;The one end of bottom plate is provided with compression assembly.The pole piece is cut by fixed shape mould, to ensure that test pole piece size condition is unified;Pole piece is folded, and the folded pole piece is placed in the fixed compression block through sliding rod, and the cross section side is fixed, pole piece cross section is flush with bottom plate cross section, sliding rod initial position is close to compression block, sliding rod and pole piece contact surface correspond scale 0 scale line position at this time, sliding rod is moved above pole piece, and the distance that sliding rod moves is confirmed when pole piece breaks, and the greater the distance is, the better the flexibility of pole piece is.The test operation is simple, and the test process is efficient, and the test human factor is small, and the test result accuracy and reliability are higher.

Description

Technical Field

[0001] This utility model belongs to the field of battery electrode flexibility testing technology, specifically relating to a battery electrode flexibility testing device. Background Technology

[0002] Currently, traditional methods for testing electrode flexibility involve manually folding the electrode in half to observe the light transmission point or using a needle to wind the electrode to check for creases or powder shedding. These methods are subjective and lack quantitative indicators, making them unsuitable for accurate evaluation during the R&D or industrialization stages. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a battery electrode flexibility testing device, which solves the problems mentioned in the background art.

[0004] The purpose of this utility model is achieved as follows: A battery electrode flexibility testing device includes a base plate, a side wall fixedly connected to the base plate, a scale value set on the surface of the side wall, a guide groove formed in the side wall, and a sliding assembly slidably connected inside the guide groove; a clamping assembly is provided at one end of the base plate. The sliding assembly includes a rack fixedly disposed on the front and rear side walls of the base plate, the rack being meshed with gears, the two gears being fixedly connected by a sliding rod, and a knob fixedly disposed at the front end of the sliding rod. The clamping assembly includes a clamping block. In use, electrodes are cut using a mold of a fixed shape to ensure uniform electrode dimensions (e.g., 25cm in length, 3cm in width). The electrode (positive or negative) is folded in half, passed through a sliding rod, and its cross-section is placed inside a clamping block for fixation. The cross-section of the electrode is flush with the cross-section of the base plate. The sliding rod is initially positioned close to the clamping block, with the contact surface between the sliding rod and the electrode corresponding to the 0 mark on the scale. The sliding rod moves over the electrode, and the distance the rod moves when the electrode breaks is recorded. A greater distance indicates better electrode flexibility. This test is simple to operate, highly efficient, minimally affected by human factors, and yields accurate and reliable results.

[0005] Optionally, the sidewall includes a front vertical plate fixedly connected to the front end of the base plate and a rear vertical plate fixedly connected to the rear end of the base plate. The guide groove is formed on the inner sidewall of the rear vertical plate, and the front vertical plate has a through hole. The sliding assembly includes a guide protrusion slidably connected inside the guide groove. A slide rod is fixedly connected to the other end of the guide protrusion, and a through rod is fixedly connected to the other end of the slide rod. The front end of the through rod extends to the front of the front vertical plate, and a knob is fixedly provided at the front end of the through rod. The clamping assembly includes a pressure plate, and a screw is threadedly connected to the pressure plate. The lower end of the screw is rotatably connected to the upper surface of the base plate, and a drive cap is fixedly provided at the upper end of the screw. The screw includes a front rod and a rear rod, and the front rod and the rear rod have the same specifications.

[0006] The beneficial effects of this invention are as follows: Electrodes are cut using a mold of a fixed shape to ensure uniform electrode dimensions during testing; the electrode is folded in half, passed through a sliding rod, and one side of the folded electrode is placed and fixed within a clamping block, with the electrode cross-section flush with the base plate cross-section. The sliding rod is initially positioned close to the clamping block, at which point the contact surface between the sliding rod and the electrode corresponds to the 0 mark on the scale. The sliding rod moves over the electrode, and the distance the sliding rod moves when the electrode breaks is confirmed; a greater distance indicates better electrode flexibility. This test is simple to operate, highly efficient, minimally affected by human factors, and yields accurate and reliable results. Attached Figure Description

[0007] Figure 1 This is a top view of Embodiment 1 of the present invention. Figure 2 This is a left-view stereoscopic structural diagram of Embodiment 1 of this utility model; Figure 3 This is the utility model Figure 2 Enlarged view of A in the middle; Figure 4 This is a right-view stereoscopic structural diagram of Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0008] In the diagram: 1. Base plate, 2. Side wall, 3. Scale value, 4. Guide groove, 5. Front vertical plate, 6. Rear vertical plate, 7. Through hole, 8. Slide rod, 9. Through rod, 10. Knob, 11. Pressure plate, 12. Screw, 13. Drive cap, 14. Electrode. Detailed Implementation

[0009] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that all directional terms such as up, down, front, back, left, and right appearing in the present invention are not intended to limit the present invention, but are only used to more clearly explain and interpret the present invention. Example 1

[0010] like Figure 1-4As shown, this embodiment discloses a battery electrode flexibility testing device, which includes a base plate 1, a side wall 2 fixedly connected to the base plate 1, a scale value 3 on the wall surface of the side wall 2, a guide groove 4 formed in the side wall 2, and a sliding assembly slidably connected inside the guide groove 4; a clamping assembly is provided at one end of the base plate. The side wall 2 includes a front vertical plate 5 fixedly connected to the front end of the base plate 1 and a rear vertical plate 6 fixedly connected to the rear end of the base plate 1. The guide groove 4 is formed in the inner side wall 2 of the rear vertical plate 6, and the front vertical plate 5 has a through hole 7. The sliding assembly includes a guide protrusion slidably connected inside the guide groove 4, a sliding rod 8 fixedly connected to the other end of the guide protrusion, a through rod 9 fixedly connected to the other end of the sliding rod 8, the front end of the through rod 9 extending to the front of the front vertical plate 5, and a knob 10 fixedly provided at the front end of the through rod 9. The clamping assembly includes a pressure plate 11, to which a screw 12 is threadedly connected. The lower end of the screw 12 is rotatably connected to the upper surface of the base plate 1, and a drive cap 13 is fixedly mounted on the upper end of the screw 12. The screw 12 includes a front rod and a rear rod, and the front rod and the rear rod have the same specifications.

[0011] Electrodes are cut using a mold of a fixed shape to ensure uniform electrode dimensions for testing. The electrodes are folded in half, passed through a slide bar 8, and one side of the folded electrode is placed inside a clamping block for fixation. The electrode cross-section is flush with the cross-section of the base plate 1. The slide bar 8 is initially positioned close to the clamping block, with its contact surface with the electrode corresponding to the 0 mark on the scale. The slide bar 8 moves over the electrode, and the distance the slide bar 8 moves when the electrode breaks is determined; a greater distance indicates better electrode flexibility. This test is simple to operate, highly efficient, minimally affected by human factors, and yields accurate and reliable results. Example 2

[0012] like Figure 5 As shown, this embodiment discloses a battery electrode flexibility testing device, which includes a base plate 1, a side wall 2 fixedly connected to the base plate 1, a scale value 3 on the surface of the side wall 2, a guide groove 4 formed in the side wall 2, and a sliding assembly slidably connected inside the guide groove 4; a clamping assembly is provided at one end of the base plate. The sliding assembly includes a rack fixedly disposed on the front and rear side walls 2 of the base plate 1, the rack being meshed with gears, the two gears being fixedly connected by a slide rod 8, and a knob 10 fixedly disposed at the front end of the slide rod 8. The clamping assembly includes a clamping block.

[0013] The slide bar 8 can move back and forth via the guide groove 4, and the distance between the slide bar 8 and the base plate 1 is 1mm. The device is made of stainless steel, and the roughness of the inner side of the base plate 1 and the surface of the slide bar 8 is required to be <0.5μm. The diameter of the slide bar 8 is >1cm and has a certain weight. The clamping block is threaded to increase its friction with the electrode and can clamp an electrode width >1cm. The scale has a total graduation of 20cm and a minimum graduation of 1mm. In use, the electrode is cut using a mold of a fixed shape to ensure that the test electrode dimensions are uniform (e.g., length 25cm, width 3cm).

[0014] Test result determination: For example, in Experiment 1, when the electrode broke, the sliding rod 8 moved a distance L=10cm, and in Experiment 2, when the electrode broke, the sliding rod 8 moved a distance L=13cm. The determination result is that the electrode in Experiment 2 has better flexibility than that in Experiment 1.

[0015] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A battery electrode flexibility testing device, comprising a base plate, characterized in that: The base plate is fixedly connected to a side wall, the side wall has a scale value on its surface, a guide groove is provided in the side wall, and a sliding component is slidably connected inside the guide groove; a pressing component is provided at one end of the base plate.

2. The battery electrode flexibility testing device according to claim 1, characterized in that: The sliding assembly includes racks fixedly mounted on the front and rear side walls of the base plate. The racks are meshed with gears, and the two gears are fixedly connected by a slide rod. A knob is fixedly mounted on the front end of the slide rod.

3. The battery electrode flexibility testing device according to claim 2, characterized in that: The clamping assembly includes a clamping block.

4. The battery electrode flexibility testing device according to claim 1, characterized in that: The sidewall includes a front vertical plate fixedly connected to the front end of the base plate and a rear vertical plate fixedly connected to the rear end of the base plate. The guide groove is formed on the inner sidewall of the rear vertical plate, and the front vertical plate has a through hole.

5. The battery electrode flexibility testing device according to claim 4, characterized in that: The sliding assembly includes a guide protrusion slidably connected inside the guide groove. A slide rod is fixedly connected to the other end of the guide protrusion, and a through rod is fixedly connected to the other end of the slide rod. The front end of the through rod extends to the front of the front vertical plate, and a knob is fixedly provided at the front end of the through rod.

6. The battery electrode flexibility testing device according to claim 5, characterized in that: The clamping assembly includes a pressure plate, a screw threadedly connected to the pressure plate, the lower end of the screw being rotatably connected to the upper surface of the base plate, and a drive cap being fixedly installed at the upper end of the screw.

7. The battery electrode flexibility testing device according to claim 6, characterized in that: The screw includes a front rod and a rear rod, and the front rod and the rear rod have the same specifications.

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