Auxiliary device for measuring thinned area of electrode plate

Abstract

The utility model relates to the technical field of batteries, and discloses an auxiliary device for measuring a thinned area of an electrode slice, which comprises a first clamping frame and a second clamping frame, the first clamping frame and the second clamping frame are used for fixing and clamping the electrode slice, and the first clamping frame and the second clamping frame are respectively provided with an inner frame for measuring the thickness of the electrode slice; the first positioning part is fixed to the inner frame of the first clamping frame and provided with a positioning line used for calibrating the outer boundary of the thinned area, and the first positioning part is provided with a plurality of first positioning grooves used for assisting in measuring the thickness of the thinned area in the direction parallel to the positioning line; and the second positioning part is fixed in the inner frame of the first clamping frame, the second positioning part is provided with a plurality of second positioning grooves used for assisting in measuring the thickness of the thinned area along the direction perpendicular to the positioning line, and the plurality of second positioning grooves are positioned on the same side of the positioning line along the direction perpendicular to the positioning line.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an auxiliary device for measuring the thinning area of ​​an electrode sheet. Background Technology

[0002] With the rapid development of the battery industry, the requirements for the basic capacity and safety performance of batteries are becoming increasingly stringent. During the coating process of battery electrodes (including positive and negative electrodes), a coated area is formed on the current collector of the electrode, while the uncoated area of ​​the current collector forms a blank foil area. The coated area is further divided into a thinned area with varying thickness and a main area with constant thickness. Specifically, the thinned area is located between the main area and the blank foil area, and its thickness typically decreases gradually from the main area to the blank foil area. The width and thickness of the thinned area of ​​the electrode directly affect the basic capacity and safety performance of the battery. Therefore, it is necessary to measure the thickness and width of the thinned area of ​​the coated electrode, calculate the current thinned area status of the product based on the measured data, and then verify it against the data specified in the production specifications to check whether the product quality meets the production requirements.

[0003] Currently, significant measurement errors can easily occur due to human error during the measurement process, leading to substantial inaccuracies in the measurement results.

[0004] Therefore, there is an urgent need for an auxiliary device to reduce errors caused by human operation and improve the accuracy of measurement data. Utility Model Content

[0005] In view of this, the present invention provides an auxiliary device for measuring the thinned area of ​​an electrode sheet, in order to solve the problem of improving the measurement accuracy of the thinned area.

[0006] This utility model provides an auxiliary device for measuring the thinned area of ​​an electrode sheet, comprising:

[0007] First clamping frame;

[0008] The second clamping frame, the first clamping frame and the second clamping frame are used to fix and clamp the electrode sheet, and both the first clamping frame and the second clamping frame are provided with an inner frame for measuring the thickness of the electrode sheet;

[0009] The first positioning part is fixed to the inner frame of the first clamping frame and is provided with a positioning line for calibrating the outer boundary of the thinning area. The first positioning part has multiple first positioning grooves for assisting in measuring the thickness of the thinning area along a direction parallel to the positioning line.

[0010] The second positioning part is fixed to the inner frame of the first clamping frame. The second positioning part has multiple second positioning grooves for assisting in measuring the thickness of the thinning area along the direction perpendicular to the positioning line. The multiple second positioning grooves are all located on the same side of the positioning line along the direction perpendicular to the positioning line.

[0011] Beneficial effects: Placing the electrode sheet between the first and second clamping frames, aligning the outer boundary of the thinned area of ​​the electrode sheet with the positioning line, positions the thinned area and clamps the electrode sheet firmly between the first and second clamping frames, ensuring stability during measurement. A micrometer is used for measurement. The measuring end of the micrometer is sequentially aligned with multiple first positioning slots, and the thickness of the thinned area at each of the multiple first positioning slots is measured along the positioning line. The average value is taken as the thickness of the thinned area. The thickness of the thinned area varies in the direction perpendicular to the positioning line. The measuring end of the micrometer is sequentially aligned with multiple second positioning slots, and the thickness of the electrode sheet at each of the multiple second positioning slots is measured sequentially along the direction perpendicular to the positioning line until the measured thickness no longer changes. At the end of the measurement, the distance from the previous second positioning slot to the positioning line is the width of the thinned area. Setting multiple first and second positioning slots prevents the operator from measuring the same position multiple times, leading to inaccurate measurement data. It also assists in positioning, eliminating the need for manual positioning. While clamping the electrode sheet, the measurement point is positioned, and the measurement can be directly performed with a micrometer, improving work efficiency and the accuracy of the thinned area measurement.

[0012] In one optional embodiment, a plurality of first positioning grooves are equally spaced along the edge of the first positioning portion;

[0013] And / or, multiple second positioning grooves are equally spaced along the edge of the second positioning part.

[0014] Beneficial effects: The first and second positioning grooves are easy to form, and the first positioning groove is located at the edge of the first positioning part, which is convenient for measurement with a micrometer. The equal spacing of multiple first positioning grooves can improve the accuracy of measurement data. The equal spacing can be used for measurement and positioning without the use of additional measuring tools. The second positioning groove is located at the edge of the second positioning part, which is convenient for measurement with a micrometer. The equal spacing of multiple second positioning grooves can improve the accuracy of measurement data.

[0015] In one optional embodiment, a plurality of first positioning grooves are equally spaced along the edge of the first positioning part. The first positioning groove is arc-shaped, and the vertical distance from the center of the first positioning groove to the positioning line is 4mm to 6mm.

[0016] Beneficial effects: The first positioning groove is set in an arc shape to facilitate its fit with the measuring end of the micrometer, thereby improving the positioning accuracy of the micrometer. The average value of the thickness of the thinned area at a distance of 4mm to 6mm from the positioning line can more accurately reflect the thickness of the thinned area.

[0017] In one optional embodiment, a plurality of second positioning grooves are equally spaced along the edge of the second positioning part. The second positioning grooves are arc-shaped, and the vertical distance from the center of the second positioning groove closest to the positioning line to the positioning line is equal to the distance between the centers of two adjacent second positioning grooves, and both are 2mm to 3mm.

[0018] Beneficial effects: The second positioning groove is designed in an arc shape to facilitate its fit with the measuring end of the micrometer, thereby improving the positioning accuracy of the micrometer. By setting a measuring interval of 2mm to 3mm, the measurement efficiency and measurement error can be well balanced.

[0019] In one alternative embodiment, a scale line is provided on the side of the first clamping frame near the second positioning part, the scale line is perpendicular to the positioning line and the zero mark is aligned with the positioning line.

[0020] Beneficial effects: The scale lines facilitate the testing of the thickness of the main body area of ​​the coating zone, excluding the thinned area, and allow operators to clearly know the distance between the measured position and the positioning line.

[0021] In one optional embodiment, the first clamping frame is provided with a first rotating end and a first connecting end; the second clamping frame is provided with a second rotating end and a second connecting end, the first rotating end is rotatably connected to the second rotating end through a rotating connector, and the first connecting end is locked to the second connecting end through a locking member.

[0022] Beneficial effects: By rotating the connecting parts, the first and second clamping frames can be opened easily, and the positions of the first and second connecting ends can be kept in correspondence. The locking parts can lock the first and second connecting ends, clamping and fixing the electrode sheet between the first and second clamping frames, ensuring stability during measurement.

[0023] In one alternative embodiment, the locking element includes two magnets, which are respectively fixed to a first connecting end and a second connecting end, and the ends of the two magnets that are close to each other have opposite magnetic properties.

[0024] Beneficial effects: The first and second clamping frames clamp the electrode plates by using magnets to attract each other, and it is convenient to install and remove the electrode plates. The structure is simple and the operation is convenient.

[0025] In one alternative implementation, it further includes:

[0026] The first handle is fixed to the outer frame of the first clamping frame;

[0027] And / or, a second handle, the second handle being fixed to the outer frame of the second clamping frame.

[0028] Beneficial effect: Easy to handle.

[0029] In one alternative implementation, the first positioning part is made of a transparent material;

[0030] And / or, the first positioning part is provided with a transparent area or a hollow area, and the boundary of the transparent area or the boundary of the hollow area is the positioning line.

[0031] Beneficial effects: It facilitates observation of the electrode plate's installation position, aligns the outer boundary of the thinned area with the positioning line, and improves measurement accuracy.

[0032] In one alternative embodiment, a measuring gap for measuring tools is provided between the first positioning part and the second positioning part along a direction parallel to the positioning line.

[0033] Beneficial effect: Prevents the first positioning part from obstructing the micrometer from measuring the thickness of the thinned area along the second positioning part. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of an auxiliary device for measuring the electrode sheet thinning area according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of an electrode sheet thinning area measurement auxiliary device according to an embodiment of the present invention from another direction;

[0037] Figure 3 This is a schematic diagram of the structure of an electrode sheet thinning area measurement auxiliary device according to an embodiment of the present invention after the electrode sheet is installed.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. First clamping frame; 101. First rotating end; 102. First connecting end; 2. Second clamping frame; 201. Second rotating end; 202. Second connecting end; 3. Rotating connector; 4. Locking component; 5. First positioning part; 501. Positioning line; 502. First positioning groove; 6. Second positioning part; 601. Second positioning groove; 7. Scale line; 8. Handle; 9. Measuring gap; 10. Electrode sheet; 11. Coating area; 12. Empty foil area. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] After the electrode sheet 10 is produced by the coating machine, a coating area 11 is formed. The uncoated area is the empty foil area 12. The coating area 11 is further divided into a thinning area with varying thickness and a main body area with constant thickness. The width and thickness of the thinning area directly affect the basic capacity performance and safety performance of the battery. Therefore, the control and measurement of the thinning area are crucial.

[0042] The following is combined with Figures 1 to 3 The following describes embodiments of the present invention.

[0043] According to an embodiment of the present invention, an auxiliary device for measuring the thinned area of ​​an electrode sheet is provided, comprising:

[0044] First clamping frame 1;

[0045] The second clamping frame 2, the first clamping frame 1 and the second clamping frame 2 are used to fix and clamp the electrode sheet 10, and both the first clamping frame 1 and the second clamping frame 2 are provided with an inner frame for measuring the thickness of the electrode sheet 10.

[0046] The first positioning part 5 is fixed to the inner frame of the first clamping frame 1 and is provided with a positioning line 501 for calibrating the outer boundary of the thinning area. The first positioning part 5 has multiple first positioning grooves 502 along the positioning line 501 for assisting in measuring the thickness of the thinning area.

[0047] The second positioning part 6 is fixed to the inner frame of the first clamping frame 1. The second positioning part 6 has a plurality of second positioning grooves 601 for assisting in measuring the thickness of the thinning area along the direction perpendicular to the positioning line 501. The second positioning grooves 601 are all located on the same side of the positioning line 501 along the direction perpendicular to the positioning line 501.

[0048] The electrode 10 is placed between the first clamping frame 1 and the second clamping frame 2, and the outer boundary of the thinned area of ​​the electrode 10 is aligned with the positioning line 501 to position the thinned area. The electrode 10 is then clamped and fixed between the first clamping frame 1 and the second clamping frame 2 to ensure stability during measurement. A micrometer is used for measurement. The measuring end of the micrometer is sequentially aligned with multiple first positioning slots 502, and the thickness of the thinned area at multiple first positioning slots 502 is measured along the positioning line 501. The average value is taken as the thickness of the thinned area. The thickness of the thinned area varies in the direction perpendicular to the positioning line 501. The measuring end of the micrometer is sequentially aligned with multiple second positioning slots 601, and the thickness of the electrode piece 10 at multiple second positioning slots 601 is measured sequentially along the direction perpendicular to the positioning line 501 until the measured thickness no longer changes. When the measurement ends, the distance from the previous second positioning slot 601 to the positioning line 501 is the width of the thinned area. Setting multiple first positioning slots 502 and multiple second positioning slots 601 can prevent the measuring personnel from measuring the same position multiple times, which would lead to inaccurate measurement data. It can also assist in positioning without manual positioning. While clamping the electrode piece 10, the measurement point is positioned and the measurement can be directly done with a micrometer, which improves work efficiency, improves the measurement accuracy of the thinned area, and ensures that the measuring personnel measure the same position each time, making the measurement data repeatable.

[0049] It should be noted that the inner frame of the first clamping frame 1 and the second clamping frame 2 is a hollow structure, which facilitates the use of a micrometer to measure the thickness and also makes it easy to observe the installation position of the electrode sheet 10; the outer boundary of the thinning area is the boundary between the empty foil area 12 and the coating area 11.

[0050] In some implementations, the first clamping frame 1 is provided with a first rotating end 101 and a first connecting end 102; the second clamping frame 2 is provided with a second rotating end 201 and a second connecting end 202. The first rotating end 101 is rotatably connected to the second rotating end 201 through a rotating connector 3, and the first connecting end 102 can be locked to the second connecting end 202 through a locking member 4.

[0051] By rotating the connector 3, the first clamping frame 1 and the second clamping frame 2 can be opened easily, and the positions of the first connecting end 102 and the second connecting end 202 can be kept in correspondence. The locking member 4 can lock the first connecting end 102 and the second connecting end 202, clamping and fixing the electrode sheet 10 between the first clamping frame 1 and the second clamping frame 2, ensuring stability during measurement.

[0052] In some implementations, such as Figure 2 As shown, the rotating connector 3 can be a hinge, a flexible connecting strip, or other structures that can rotate for connection.

[0053] In some embodiments, the locking member 4 includes two magnets, which are respectively fixed to the first connecting end 102 and the second connecting end 202. The ends of the two magnets that are close to each other have opposite magnetic properties. The attraction between the magnets enables the first clamping frame 1 and the second clamping frame 2 to clamp the electrode sheet 10, and facilitates the installation and removal of the electrode sheet 10. The structure is simple and the operation is convenient.

[0054] In one embodiment, a plurality of first positioning grooves 502 are equally spaced along the edge of the first positioning part 5. This facilitates processing, and the first positioning grooves 502 being positioned along the edge of the first positioning part 5 facilitates measurement with a micrometer. The equally spaced arrangement of the plurality of first positioning grooves 502 improves the accuracy of measurement data, and the equally spaced arrangement allows for measurement and positioning without the use of additional measuring tools.

[0055] In one embodiment, the first positioning groove 502 is arc-shaped, and the vertical distance from the center of the first positioning groove 502 to the positioning line 501 is 4mm to 6mm. The arc shape of the first positioning groove 502 facilitates its fit with the measuring end of the micrometer, improving the positioning accuracy of the micrometer. Averaging the thickness values ​​of the thinned area at a distance of 4mm to 6mm from the positioning line provides a more accurate reflection of the thinned area thickness. The center of the first positioning groove 502 refers to the center of the circle corresponding to its arc-shaped structure.

[0056] In some specific embodiments, the vertical distance from the center of the first positioning groove 502 to the positioning line 501 is 5mm.

[0057] In some specific embodiments, the diameter of the first positioning groove 502 is 5mm.

[0058] In some specific embodiments, by measuring the first positioning groove 502 with a micrometer, the thickness of multiple thinning areas can be measured at a vertical distance of 5mm from the positioning line 501 and along a direction parallel to the positioning line 501. The average value of these data is then used to obtain the thickness value of the thinning area, which is more accurate.

[0059] In some specific embodiments, the direction parallel to the positioning line 501 corresponds to the length direction of the thinning area.

[0060] In one embodiment, a plurality of second positioning grooves 601 are equally spaced along the edge of the second positioning part 6.

[0061] Beneficial effects: It facilitates processing, and the second positioning groove 601 is located on the edge of the second positioning part 6, which facilitates measurement with a micrometer. The arrangement of multiple second positioning grooves 601 at equal intervals can improve the accuracy of measurement data.

[0062] In one embodiment, the second positioning groove 601 is arc-shaped. The vertical distance from the center of the second positioning groove 601 closest to the positioning line 501 to the positioning line 501 is equal to the distance between the centers of two adjacent second positioning grooves 601, and both are 2mm to 3mm. The arc shape of the second positioning groove 601 facilitates its fit with the measuring end of the micrometer, improving the positioning accuracy of the micrometer. By setting a measuring interval of 2mm to 3mm, a good balance between measurement efficiency and measurement error can be achieved. The center of the second positioning groove 601 is the center of the circle corresponding to its arc-shaped structure.

[0063] In some specific embodiments, the vertical distance between the positioning line 501 and the center of a second positioning groove 601 nearby is 2.5 mm.

[0064] In some specific embodiments, the diameter of the second positioning groove 601 is 2.5 mm.

[0065] In some specific embodiments, by using a micrometer to correspond to the second positioning groove 601, the thickness of the thinned area at positions such as 2.5mm, 5mm, 7.5mm, and 10mm away from the positioning line can be measured.

[0066] In some specific embodiments, the direction perpendicular to the positioning line 501 corresponds to the width direction of the thinning area.

[0067] In one embodiment, a scale line 7 is provided on the side of the first clamping frame 1 near the second positioning part 6. The scale line 7 is perpendicular to the positioning line 501 and the zero mark is aligned with the positioning line 501. The scale line 7 facilitates the testing of the thickness of the main body area other than the thinning area, and allows the operator to clearly know the distance between the measured position and the positioning line 501.

[0068] In one embodiment, a first handle 8 is also included, which is fixed to the outer frame of the first clamping frame 1;

[0069] And / or, a second handle, the second handle being fixed to the outer frame of the second clamping frame 2.

[0070] In one embodiment, a measuring gap 9 for measuring tools is provided between the first positioning part 5 and the second positioning part 6 along a direction parallel to the positioning line 501. This prevents the first positioning part 5 from obstructing the micrometer from measuring the thickness of the thinned area along the second positioning part 6.

[0071] In one embodiment, the first positioning parts 5 are all made of transparent material. This facilitates observation of the installation position of the electrode sheet 10, aligns the outer boundary of the thinned area with the positioning line 501, and improves measurement accuracy.

[0072] In some implementations, the first positioning part 5 is provided with a transparent area or a hollow area. The boundary of the transparent area or the boundary of the hollow area is set as the positioning line 501. The setting of the transparent area or the hollow area makes it convenient to observe the installation position of the electrode sheet 10. Aligning the outer boundary of the thinned area with the positioning line 501 improves the measurement accuracy.

[0073] In some specific embodiments, the first clamping frame 1 and the second clamping frame 2 may also be made of transparent plastic, such as acrylic sheet.

[0074] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended application.

Claims

1. An auxiliary device for measuring the thinned area of ​​an electrode sheet, characterized in that, include: First clamping frame (1); The second clamping frame (2) is used to fix and clamp the electrode sheet, and both the first clamping frame (1) and the second clamping frame (2) are provided with an inner frame for measuring the thickness of the electrode sheet; The first positioning part (5) is fixed to the inner frame of the first clamping frame (1) and is provided with a positioning line (501) for marking the outer boundary of the thinning area of ​​the electrode sheet. The first positioning part (5) has multiple first positioning grooves (502) for assisting in measuring the thickness of the thinning area in a direction parallel to the positioning line (501). The second positioning part (6) is fixed to the inner frame of the first clamping frame (1). The second positioning part (6) has a plurality of second positioning grooves (601) for assisting in measuring the thickness of the thinning area along the direction perpendicular to the positioning line (501). Along the direction perpendicular to the positioning line (501), the plurality of second positioning grooves (601) are all located on the same side of the positioning line (501).

2. The auxiliary device for measuring the electrode sheet thinning area according to claim 1, characterized in that, Multiple first positioning grooves (502) are equally spaced along the edge of the first positioning part (5); And / or, a plurality of the second positioning grooves (601) are equally spaced along the edge of the second positioning part (6).

3. The auxiliary device for measuring the electrode sheet thinning area according to claim 2, characterized in that, Multiple first positioning grooves (502) are equally spaced on the edge of the first positioning part (5). The first positioning groove (502) is arc-shaped, and the vertical distance from the center of the first positioning groove (502) to the positioning line (501) is 4mm to 6mm.

4. The auxiliary device for measuring the thinned area of ​​an electrode sheet according to claim 2, characterized in that, Multiple second positioning grooves (601) are equally spaced on the edge of the second positioning part (6). The second positioning groove (601) is arc-shaped. The vertical distance from the center of the second positioning groove (601) closest to the positioning line (501) to the positioning line (501) is equal to the distance between the centers of two adjacent second positioning grooves (601), and both are 2mm to 3mm.

5. The auxiliary device for measuring the thinned area of ​​an electrode sheet according to claim 1, characterized in that, The first clamping frame (1) has a scale line (7) on the side near the second positioning part (6). The scale line (7) is perpendicular to the positioning line (501) and the zero mark is aligned with the positioning line (501).

6. The auxiliary device for measuring the thinned area of ​​an electrode sheet according to claim 1, characterized in that, The first clamping frame (1) is provided with a first rotating end (101) and a first connecting end (102); The second clamping frame (2) is provided with a second rotating end (201) and a second connecting end (202). The first rotating end (101) is rotatably connected to the second rotating end (201) through a rotating connector (3). The first connecting end (102) can be locked to the second connecting end (202) through a locking member (4).

7. The auxiliary device for measuring the electrode sheet thinning area according to claim 6, characterized in that, The locking member (4) includes two magnets, which are respectively fixed to the first connecting end (102) and the second connecting end (202), and the two magnets have opposite magnetism at their close ends.

8. The auxiliary device for measuring the thinned area of ​​an electrode sheet according to claim 1, characterized in that, Also includes: The first handle (8) is fixed to the outer frame of the first clamping frame (1); And / or, a second handle, which is fixed to the outer frame of the second clamping frame (2).

9. The auxiliary device for measuring the electrode sheet thinning area according to claim 1, characterized in that, The first positioning part (5) is made of transparent material; And / or, the first positioning part (5) is provided with a transparent area or a hollow area, and the boundary of the transparent area or the boundary of the hollow area is the positioning line (501).

10. The electrode sheet thinning area measurement auxiliary device according to claim 1, characterized in that, Along a direction parallel to the positioning line (501), a measuring gap (9) for measuring tools is provided between the first positioning part (5) and the second positioning part (6).

Images