Device for detecting bending degree of polar plate

Abstract

The utility model provides a device for detecting the bending degree of a polar plate, which comprises a lower detection plate and an upper detection plate, whether the bending degree of the polar plate to be detected is qualified or not is judged by judging whether the upper detection plate is contacted with the polar plate to be detected or not when sliding on the surface of the lower detection plate, manual reading is not needed, and the detection error is small; the detection process is simple to operate and high in detection speed; the structural design of the upper detection plate and the lower detection plate enables automatic equipment to control the detection process of the polar plate to be detected, and the whole detection process can be integrated into an automatic production line more seamlessly, so that the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery, specifically relates to a device for detecting the bending degree of plate. BACKGROUND

[0002] The battery is a kind of electrical device that stores the electrical energy obtained in the form of chemical energy and can convert chemical energy into electrical energy. The plate is the core component of the battery, and the bending degree of the plate is an important factor affecting the manufacturing quality of the battery. If the plate is excessively bent or deformed, it will seriously affect the assembly quality and the final performance of the battery, such as causing internal short circuit of the battery, active material shedding or uneven battery capacity and a series of problems.

[0003] The patent with the authorization announcement number CN204085430U discloses a kind of battery plate flatness measuring device, including horizontal workbench, measuring plate, fixed seat and fastener, wherein measuring plate is transparent glass of material, surface is equipped with the scale line of protrusion or recess, the highest point and the lowest point of plate are read by observing the scale line outside measuring plate, reading is intuitive, the flatness of plate can be accurately measured, and the contact of worker and lead paste is reduced.

[0004] The above-mentioned patent is greatly influenced by the skill and experience of operator in the process of measuring reading, and there is the problem of inaccurate measurement. Therefore, the detection method of the bending degree of the plate needs to be improved. UTILITY MODEL CONTENT

[0005] To solve the above problems existing in the prior art, the utility model provides a kind of device for detecting the bending degree of plate, can accurately and quickly detect whether the bending degree of battery plate is qualified.

[0006] The utility model provides a kind of device for detecting the bending degree of plate, including lower detection plate and upper detection plate.

[0007] The top surface of the lower detection plate has a detection slot for placing the plate to be detected.

[0008] The bottom surface of the upper detection plate serves as a detection surface, and the bottom surface of the upper detection plate also has a support slide at both ends.

[0009] The width of the plate to be detected is w, and the thickness is d. When the upper detection plate is supported on the surface of the lower detection plate by the support slide, the height difference between the detection surface of the upper detection plate and the bottom surface of the detection slot of the lower detection plate is aw+d, where a is the qualified coefficient of the bending degree of the plate, and 1%≤a≤3%.

[0010] During detection, if the detection surface does not contact the plate to be detected when the upper detection plate slides on the surface of the lower detection plate by the support slide, the bending degree of the plate to be detected is qualified.

[0011] Preferably, the plate curvature qualification coefficient a is 2%.

[0012] Preferably, the lower detection plate and the upper detection plate are both made of stainless steel, have good corrosion resistance and structural stability, and are easy to clean and maintain.

[0013] Preferably, the detection slot is opened at both ends in the length direction, and the electrode plate to be detected can be easily slid into the detection slot from one end and out from the other end, so that the electrode plate can be replaced and detected quickly and frequently.

[0014] Preferably, during testing, the support slides are positioned within the testing slot, and the spacing between the support slides at both ends of the upper testing plate is greater than the width of the plate to be tested. During testing, the outer surfaces of the support slides at both ends can slide along the inner surfaces of the testing slot, thereby reducing swing or deviation of the upper testing plate during sliding and improving the accuracy of curvature testing.

[0015] Preferably, the spacing between the support slides at both ends of the upper inspection plate is greater than the width of the inspection slot; the lower inspection plate is provided with a slide groove on either side of the inspection slot along its width, and the support slides slide in synergistic engagement with the slide grooves. During testing, the support slides of the upper inspection plate slide within the slide grooves of the lower inspection plate. The slide grooves provide a stable guide for the upper inspection plate, making it less likely to swing or deviate during sliding, thereby improving the accuracy and reliability of curvature testing.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) Whether the curvature of the plate to be tested is qualified is determined by whether the upper test plate contacts the plate to be tested when sliding on the surface of the lower test plate. No manual reading is required, and the detection error is small.

[0018] (2) The detection process is simple to operate and the detection speed is fast;

[0019] (3) The structural design of the upper and lower test plates enables the automated equipment to control the test process of the plates to be tested. The entire test process can be more seamlessly integrated into the automated production line, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the device for detecting the curvature of the electrode plate in Example 1.

[0021] Figure 2 This is a schematic diagram of the front view of the device for detecting the curvature of the electrode plate in Example 1.

[0022] Figure 3 Schematic diagram of the three-dimensional structure of the device for detecting the curvature of the electrode plate in Example 2.

[0023] Figure 4 This is a schematic diagram of the front view of the device for detecting the curvature of the electrode plate in Example 2.

[0024] Reference numerals: lower detection plate 1 , detection groove 11 , slide groove 12 , upper detection plate 2 , supporting slide plate 21 . DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] The width of the electrode to be tested is w, and the thickness is d.

[0028] like Figures 1-2 As shown, a device for detecting the curvature of a plate includes a lower detection plate 1 and an upper detection plate 2.

[0029] The top surface of the lower test plate 1 has a test slot 11 for placing the plate to be tested. The test slot 11 is open at both ends along its length, so that the plate to be tested can be easily slid into and out of the test slot 11 from one end, facilitating quick and frequent replacement and testing of the plate.

[0030] The bottom surface of the upper detection plate 2 serves as a detection surface, and both ends of the bottom surface of the upper detection plate 2 are provided with supporting slide plates 21 .

[0031] The lower detection plate 1 and the upper detection plate 2 are both made of stainless steel, have good corrosion resistance and structural stability, and are easy to clean and maintain.

[0032] When the upper detection plate 2 is supported on the surface of the lower detection plate 1 by the supporting slide 21, the height difference between the detection surface of the upper detection plate 2 and the bottom surface of the detection groove 11 of the lower detection plate 1 is aw+d, where a is the qualified coefficient of the plate curvature, 1%≤a≤3%. In this embodiment, the preferred qualified coefficient a of the plate curvature is 2%.

[0033] During testing, the support slide 21 is positioned within the testing slot 11, with the spacing between the two support slides 21 greater than the width of the plate being tested. During testing, the outer surfaces of the support slides 21 at both ends slide along the inner surfaces of the testing slot 11, thereby reducing swing or deviation of the upper testing plate 2 during the sliding process and improving the accuracy of curvature testing.

[0034] The specific detection process is as follows:

[0035] Place the plate to be tested in the testing slot 11 of the lower testing plate 1. Place the upper testing plate 2 lengthwise over the lower testing plate 1 widthwise, then slide the upper testing plate 2 back and forth. If the plate does not move as the upper testing plate 2 passes over it, the curvature of the plate is acceptable. If it does move, the curvature of the plate is unacceptable.

[0036] Example 2

[0037] like Figures 3-4 As shown, the differences from Example 1 are as follows: the spacing between the support slides 21 at both ends of the upper detection plate 2 is greater than the width of the detection slot 11, and the lower detection plate 1 is provided with a slide groove 12 on each side of the detection slot 11 along the width direction, and the support slide 21 slides in conjunction with the slide groove 12. During testing, the support slide 21 of the upper detection plate 2 slides within the slide groove 12 of the lower detection plate 1. The slide groove 12 provides a stable sliding guide for the upper detection plate 2, making it less likely for the upper detection plate 2 to swing or deviate during sliding, thereby improving the accuracy and reliability of curvature testing.

Claims

1. A device for detecting the curvature of a plate, wherein the width of the plate to be detected is w and the thickness is d, characterized in that: The device comprises: A lower detection plate, wherein the top surface of the lower detection plate has a detection groove for placing the electrode plate to be detected; The upper detection plate has a bottom surface serving as a detection surface, and support slides are provided at both ends of the bottom surface of the upper detection plate; when the upper detection plate is supported on the surface of the lower detection plate by the support slides, the height difference between the detection surface of the upper detection plate and the bottom surface of the detection groove of the lower detection plate is aw + d, where a is the plate curvature qualification coefficient, 1% ≤ a ≤ 3%; During testing, when the upper testing plate slides on the surface of the lower testing plate via the supporting slide plate, if the testing surface does not contact the electrode plate to be tested, the curvature of the electrode plate to be tested is qualified.

2. The device for detecting the curvature of a plate according to claim 1, characterized in that: a is 2%.

3. The device for detecting the curvature of a plate according to claim 1, characterized in that: The lower detection plate and the upper detection plate are both made of stainless steel.

4. The device for detecting the curvature of a plate according to claim 1, characterized in that: During testing, the supporting slide is located in the testing slot, and the distance between the supporting slides at both ends is greater than the width of the electrode to be tested.

5. The device for detecting the curvature of a plate according to claim 1, characterized in that: The distance between the supporting slides at both ends is greater than the width of the detection slot; The lower detection plate is provided with a sliding groove on both sides of the detection groove along the width direction, and the supporting slide plate is slidably matched with the sliding groove.

6. The device for detecting the curvature of a plate according to claim 1, characterized in that: The detection slot is opened at both ends in the length direction.

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