Measuring method of storage battery grid flatness measuring device

Abstract

This invention relates to the field of battery grid flatness testing and discloses a method for measuring the flatness of battery grids. In this device, two parallel strip-shaped detection windows (4) are opened on the left and right sides of the upper surface (8) of the support (1). The distance d1 between the outermost edges of the two detection windows and the width d2 of the pressure plate (2) are both greater than the width d3 of the grid to be tested (5). The length of the two detection windows is greater than the length of the grid to be tested (5). When measuring, when looking down at the pressure plate, the two sides of the pressure plate cover part or all of the two detection windows. When looking up at the pressure plate, the two sides of the pressure plate are longer than the preset distance d of the grid to be tested. An infrared rangefinder (3) is placed below the detection windows and can move along the length direction of the detection windows. Compared with the prior art, this invention can quickly and conveniently measure the flatness of a batch of grids, ensure the accuracy of the data, and provide an effective guarantee for improving the quality of the plates.

Description

[0001] Case Analysis

[0002] This invention is a divisional application filed on November 1, 2018, with application number 2018112931125, entitled "Battery Grid Flatness Measuring Device and Measuring Method Thereof". Technical Field

[0003] This invention relates to the field of battery grid flatness testing, and particularly to a method for measuring the flatness of battery grids. Background Technology

[0004] In the battery grid manufacturing process, flatness testing of the grids is necessary. The flatness directly affects the coating quality and flatness of the plates. Currently, the practice is to randomly select one batch (several plates) from each batch, neatly stack them on a horizontal platform, and measure several points using a height gauge, recording the height difference between the lowest and highest points. If the difference is within the standard range, the batch of grids is considered to have acceptable flatness. However, this current measurement method is susceptible to significant human error; the force applied to the height gauge directly affects the stacked thickness of a batch of grids, misleading the data interpretation. This testing method is time-consuming and labor-intensive, making the invention of a faster and more convenient testing device urgently needed. Summary of the Invention

[0005] Purpose of the invention: To address the problems existing in the prior art, the present invention provides a measurement method for a battery grid flatness measuring device, which can quickly and conveniently measure the flatness of a batch of grids, ensuring the accuracy of the data and providing an effective guarantee for improving the quality of the plates.

[0006] Technical Solution: This invention provides a battery grid flatness measuring device, comprising a support, a sliding groove, a pressure plate, and at least one infrared rangefinder. Two parallel elongated detection windows are opened on the left and right sides of the upper surface of the support. The distance d1 between the outermost edges of the two detection windows and the width d2 of the pressure plate are both greater than the width d3 of the grid to be measured. The length of the two detection windows is greater than the length of the grid to be measured. During measurement, when viewed from above, the sides of the pressure plate cover part or all of the two detection windows; when viewed from below, the sides of the pressure plate are each longer than a preset distance d between the grids to be measured. The infrared rangefinder is positioned below the detection windows and can move along the length of the detection windows.

[0007] Furthermore, a partition plate parallel to the upper surface of the support is provided on the support below the detection window. A sliding groove of equal length and parallel to the two detection windows is provided on the partition plate opposite each of the two detection windows. The infrared rangefinder can slide back and forth within either of these grooves. During measurement, the infrared light emitted by the infrared rangefinder must be perpendicular to the pressure plate to ensure the accuracy of the measurement results. With the partition plate parallel to the upper surface of the support, when the infrared rangefinder is moved back and forth within the groove of the partition plate, the infrared light emitted by the infrared rangefinder remains perpendicular to the pressure plate, ensuring measurement accuracy.

[0008] Preferably, two infrared rangefinders are provided, each slidably connected within one of the two grooves. Using two infrared rangefinders allows for simultaneous measurement of points on both sides of the grating, making measurement convenient, quick, and efficient.

[0009] Preferably, the preset spacing is 5-10mm. Only when the two sides of the pressure plate are longer than the preset spacing on both sides of the grid to be measured can the infrared light emitted from the infrared rangefinder below be ensured to be unblocked by the two sides of the grid to be measured, and be successfully emitted to the two sides of the pressure plate extending from the grid to be measured, thus achieving measurement.

[0010] Preferably, the pressure plate weighs 500-1000g. The pressure plate needs to have a certain weight to ensure that the upper and lower surfaces of the n test grids are pressed into solid contact, thus ensuring the accuracy of the measurement.

[0011] The present invention also provides a measurement method for the aforementioned battery grid flatness measuring device, comprising the following steps: S1: placing the pressure plate flat on the upper surface of the support between the two detection windows, such that when viewed from above, the two sides of the pressure plate cover part or all of the two detection windows respectively; S2: sliding an infrared rangefinder below the detection windows, and when any measurement point is detected on the lower surface of the pressure plate, zeroing the infrared rangefinder and then removing the pressure plate; S3: randomly selecting a handful of grids to be tested from each batch of grids to be tested, and neatly stacking them on the two supports. S4: Press the pressure plate flat on the several test plates, requiring that when looking down at the pressure plate, both sides of the pressure plate cover part or all of the two test windows, and when looking up at the pressure plate, both sides of the pressure plate are longer than the preset distance of the test plates; S5: Slide the infrared rangefinder along its length below the two test windows respectively, detect the distance of several required measurement points and record the values, calculate the height difference between the lowest point and the highest point, and if the height difference is within the standard range, then the flatness of the batch of test plates is determined to be qualified.

[0012] Beneficial effects: When measuring the flatness of the grid under test using this device, accurate measurement can be achieved in just a few simple steps provided by this invention. This effectively avoids measurement errors caused by human factors, ensures the accuracy of measurement results, and provides an effective guarantee for improving the quality of the grid. In addition, this device has a simple structure, is quick and convenient to measure, effectively improves measurement efficiency, and saves labor costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the battery grid flatness measuring device in Implementation Method 1;

[0014] Figure 2 for Figure 1 Top view;

[0015] Figure 3 This is a top view of the grid plate under test;

[0016] Figure 4 This is a schematic diagram of the battery grid flatness measuring device in Embodiment 2. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] Implementation method 1:

[0019] This embodiment provides a battery panel grid flatness measuring device, such as... Figure 1 and 2 As shown, it mainly consists of a support 1, an infrared rangefinder 2, and a pressure plate 2 with a width d2 that is 10-20 mm greater than the width d3 of the grid 5 to be tested and a weight of 500-1000g. Two parallel strip-shaped detection windows 4 are opened on the left and right sides of the upper surface 8 of the support 1. The distance d1 between the outermost edges of the two detection windows 4 is greater than the width d3 of the grid 5 to be tested. The length of the two detection windows 4 is greater than the length of the grid 5 to be tested. The infrared rangefinder 3 is placed below the detection windows 4 and can move along the length of the detection windows 4.

[0020] During testing, first, place the pressure plate 2 flat on the upper surface 8 of the support 1 between the two detection windows 4. When looking down at the pressure plate 2, both sides of the pressure plate 2 should cover part or all of the two detection windows 4. Then, slide the infrared rangefinder 3 below the detection windows 4. When any measurement point on the lower surface of the pressure plate 2 is detected, zero the infrared rangefinder 3 and remove the pressure plate 2. Next, randomly select several grids 5 from a batch of grids to be tested and neatly stack them on the upper surface 8 of the support 1 between the two detection windows 4. Note that the two sides of the grids 5 should not completely cover the detection windows 4 on both sides (partial coverage is acceptable). Then, press the pressure plate 2 flat on top of the several grids 5. When looking down at the pressure plate 2, both sides of the pressure plate 2 should cover part or all of the two detection windows 4. When looking up at the pressure plate 2, both sides of the pressure plate 2 should be longer than the grids 5 to be tested. 5-10mm; finally, slide the infrared rangefinder 3 along its length below a detection window 4 to detect three measurement points on one side edge of the grid to be tested (e.g., Figure 3 The distances between the lower surfaces of the pressure plates 2 (51, 52, and 53) and the values ​​are recorded. Then, the infrared rangefinder 3 is moved below another detection window 4 and slid along the length of the detection window 4 to detect the distances between the pressure plates 5 and the lower surfaces of the pressure plates 2 (51, 52, and 53). Figure 3 Measure the distance between the lower surfaces of the pressure plates 2 corresponding to points 54, 55, and 56 and record the values. Calculate the height difference between the lowest and highest points among the six measurement points. If the height difference is within the standard range, the flatness of the batch of test plates is deemed to be qualified.

[0021] Implementation Method 2

[0022] This embodiment is a further improvement of embodiment 1. The main improvement is that, during measurement, the infrared ray 31 emitted by the infrared rangefinder 3 must be perpendicular to the pressure plate 2 to ensure the accuracy of the measurement results. In embodiment 1, the infrared rangefinder 3 is only manually moved below the detection window 4 for detection, which cannot guarantee that the infrared ray 31 emitted by the infrared rangefinder 3 is perpendicular to the pressure plate 2. This embodiment can effectively solve the above-mentioned defects.

[0023] Specifically, in this embodiment, such as Figure 4 Furthermore, a partition 6 parallel to the upper surface 8 of the support 1 is set on the support 1 below the detection window 4. On the partition 6, a sliding groove 7 parallel to the two detection windows 4 and of equal length is set on the position of the two detection windows 4 respectively. An infrared rangefinder 3 is slidably connected in each sliding groove 7. Since the partition 6 is parallel to the upper surface 8 of the support 1, when the infrared rangefinder 3 is placed in the sliding groove 7 and moved back and forth for detection, the infrared light 31 emitted by the infrared rangefinder 3 can always be kept perpendicular to the pressure plate 2, ensuring the accuracy of the measurement.

[0024] Apart from the above, this implementation method is exactly the same as implementation method 1, and will not be described again here.

[0025] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for measuring the flatness of a battery grid, characterized in that: The battery grid flatness measuring device includes a support (1), a pressure plate (2), and at least one infrared rangefinder (3). Two parallel strip-shaped detection windows (4) are opened on the left and right sides of the upper surface (8) of the support (1). The distance d1 between the outermost edges of the two detection windows (4) and the width d2 of the pressure plate (2) are both greater than the width d3 of the grid (5) to be measured. The length of the two detection windows (4) is greater than the length of the grid (5) to be measured. When measuring, when looking down at the pressure plate (2), the two sides of the pressure plate (2) cover part or all of the two detection windows (4). When looking up at the pressure plate (2), the two sides of the pressure plate (2) are longer than the preset distance d of the grid (5) to be measured. The infrared rangefinder (3) is placed below the detection windows (4) and can move along the length direction of the detection windows (4). The measurement method includes the following steps: S1: Place the pressure plate (2) flat on the upper surface of the support (1) between the two detection windows (4). When looking down at the pressure plate (2), the two sides of the pressure plate (2) cover part or all of the two detection windows (4). S2: Slide the infrared rangefinder (3) below the detection window (4). When any measurement point on the lower surface of the pressure plate (2) is detected, reset the infrared rangefinder (3) to zero and then remove the pressure plate (2). S3: Randomly select a number of test plates (5) from a batch of test plates and neatly stack them on the upper surface (8) of the support (1) between the two test windows (4); S4: Press the pressure plate (2) flat on the several test plates (5). When looking down at the pressure plate (2), the two sides of the pressure plate (2) should cover part or all of the two detection windows (4). When looking up at the pressure plate (2), the two sides of the pressure plate (2) should be longer than the preset distance d of the test plates (5). S5: Slide the infrared rangefinder (3) along its length below the two detection windows (4) respectively, detect the distance between the lower surface of the pressure plate (2) corresponding to the required number of measurement points and record the values, calculate the height difference between the lowest point and the highest point, and if the height difference is within the standard range, then the flatness of the batch of test plates (5) is qualified.

2. The measurement method of the battery grid flatness measuring device according to claim 1, characterized in that, A partition (6) parallel to the upper surface (8) of the support (1) is also provided on the support (1) below the detection window (4). A sliding groove (7) of equal length and parallel to the two detection windows (4) is provided on the partition (6) opposite to the two detection windows (4). The infrared rangefinder (3) can slide back and forth in any of the sliding grooves (7).

3. The measurement method of the battery grid flatness measuring device according to claim 2, characterized in that, There are two infrared rangefinders (3), which are slidably connected in the two grooves (7).

4. The measurement method of the battery grid flatness measuring device according to any one of claims 1 to 3, characterized in that, The preset spacing d is 5-10mm.

5. The measurement method of the battery grid flatness measuring device according to any one of claims 1 to 3, characterized in that, The weight of the pressure plate (2) is 500-1000g.

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