Calibration device and calibration method for positive and negative electrode rolling thickness gauge

Abstract

The invention discloses a positive and negative electrode rolling thickness gauge calibration device and a calibration method thereof, relates to the technical field of pole piece thickness measurement equipment, and solves the problems that in the prior art, pole pieces need to be cut during calibration, some of the pole pieces need to be adhered back again, secondary and third repeated calibration is needed when one-time calibration is unsuccessful, time is consumed when the pieces are taken back and forth, and the calibration efficiency is high. And the working efficiency is reduced. Comprising a thickness gauge device and a calibration piece, the thickness gauge device comprises a mounting base and a thickness measuring assembly connected to the mounting base, the thickness measuring assembly is slidably connected to the mounting base, the calibration piece comprises a calibration material block and a calibration driving assembly driving the calibration material block to slide, and the sliding path of the thickness measuring assembly passes through a conveying path of a pole piece and the calibration material block. The sliding direction of the calibration material block is perpendicular to the sliding direction of the thickness measuring assembly, and different standard thicknesses are set in the sliding direction of the calibration material block. Manual calibration can be replaced, and the effect of improving the working efficiency and the calibration precision is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of electrode thickness measuring equipment, and in particular to a calibration device and a calibration method for a positive and negative electrode roller thickness gauge. Background Art

[0002] In the lithium battery industry, the electrode rolling process needs to be equipped with a laser online detector to monitor the thickness of the electrode during the rolling process to ensure that the thickness of the produced electrode is within the qualified range. Due to the vibration of the equipment itself during operation and the influence of dust in the workshop environment, the test accuracy of the laser thickness gauge will be affected over time, so the thickness gauge needs to be calibrated and checked regularly.

[0003] The traditional method is to change the pressure of the roller to press 5 to 7 groups of pole pieces with different thicknesses, and then use a laser thickness gauge to scan the thickness of the pole pieces online, cut the pole pieces from the equipment, and manually test the thickness with a micrometer. The data of the two are used for calibration. If the calibration fails, recalibration is required. The above calibration process requires cutting of the electrode, which easily causes dust to fall off. In some cases, the electrode needs to be glued back on. If the calibration is unsuccessful once, the calibration needs to be repeated a second or third time. The back and forth retrieval of the electrode consumes a lot of time, which reduces work efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a calibration device and a calibration method for a positive and negative electrode roller thickness gauge, which can improve work efficiency and calibration accuracy by replacing the electrode piece with a calibration material block of standard thickness and realizing automatic calibration through a calibration piece.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A positive and negative electrode roller thickness gauge calibration device comprises a thickness gauge device and a calibration piece, wherein the thickness gauge device comprises a mounting seat and a thickness measuring assembly connected to the mounting seat, wherein the thickness measuring assembly is horizontally slidably connected to the mounting seat, and the calibration piece comprises a calibration material block and a calibration drive assembly for driving the calibration material block to slide, wherein the sliding path of the thickness measuring assembly passes through the conveying path of the electrode piece and the calibration material block, wherein the sliding direction of the calibration material block is perpendicular to the sliding direction of the thickness measuring assembly, and different standard thicknesses are set along its own sliding direction.

[0006] Furthermore, the mounting seat includes two upper and lower horizontal modules, the thickness measuring assembly is connected to the slider of the horizontal module, and is driven to slide back and forth by the horizontal module.

[0007] Furthermore, the calibration component includes a calibration template, the calibration template is detachably connected to one side of the mounting seat, and the calibration material block and the calibration drive assembly are connected to the calibration template.

[0008] Furthermore, the inner side of the calibration material block is connected to a T-block / T-slot, and the outer side of the calibration template is connected to a corresponding T-slot / T-block.

[0009] Furthermore, the mounting seat is connected to a T-slot / T-block corresponding to the T-slot located between the two horizontal modules.

[0010] Furthermore, the mounting seat includes a positioning block, a corresponding positioning groove is provided at the bottom of the calibration template, and the calibration template is inserted downwardly into the positioning block through the positioning groove.

[0011] Furthermore, the mounting seat is opened and connected with a plurality of abutment blocks, and the bottom of the calibration template abuts against the abutment blocks.

[0012] Furthermore, the upper side and / or the lower side of the calibration material block is stepped, corresponding to different standard thicknesses.

[0013] Furthermore, the calibration drive assembly includes a calibration module, a slider of the calibration module extends an extension block toward one end of the thickness measuring assembly, the outer side of the extension block is connected to the plug block, and a corresponding slot is provided on the inner side of the calibration material block. After the calibration material block is plugged into the plug block at the outer end of the calibration module, the guided insertion of the T-block and the corresponding T-slot is achieved by moving the slider of the calibration module.

[0014] The present application also discloses a calibration method for a positive and negative electrode roller thickness gauge calibration device, comprising the following steps: The calibration piece is installed in the thickness gauge device, and the thickness measuring component moves back and forth in the width direction of the pole piece within the width range of the pole piece to measure the thickness at different positions of the pole piece; When calibration is required, the thickness measuring component moves away from the electrode width range and moves to the location of the calibration material block. The calibration material block moves under the drive of the calibration drive component, and each standard thickness position of known thickness on it is measured in turn in the thickness measuring component, and each collection value is collected to realize the calibration of the thickness measuring component.

[0015] In summary, the present invention has the following beneficial effects: The thickness of the calibration material block at different calibration planes is different, and calibration of various thicknesses can be achieved. By translating the calibration material block, different calibration planes are moved to the detection head of the thickness gauge in turn, replacing manual calibration, and automatically completing the calibration of various thicknesses, which can improve work efficiency and calibration accuracy; and the calibration material block is easy to disassemble and assemble, and easy to replace, and the calibration parts are modularized as a whole, which is convenient for installation in different thickness gauge devices for calibration, which is conducive to reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a calibration device for a positive and negative electrode roller thickness gauge of the present invention; Figure 2 The invention discloses a schematic diagram of the connection structure of the calibration component part of a positive and negative electrode roller thickness gauge calibration device.

[0017] In the figure, 1. thickness gauge device; 11. mounting seat; 111. horizontal module; 113. positioning block; 114. abutment block; 12. thickness measuring assembly; 13. limiting roller; 2. calibration piece; 21. calibration material block; 22. calibration module; 221. T-slot; 222. extension block; 223. insert block; 23. calibration template. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, and this embodiment does not constitute a limitation of the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0019] A positive and negative electrode roller thickness gauge calibration device, such as Figure 1 and Figure 2 As shown, it includes a thickness gauge device 1 and a calibration piece 2. The thickness gauge device 1 includes a mounting seat 11 and a thickness measuring component 12 connected to the mounting seat 11. The thickness measuring component 12 is horizontally slidably connected to the mounting seat 11 to achieve movement along the width direction of the pole piece and measure the thickness of the pole pieces at different positions. In this embodiment, in order to reduce the jitter and distortion during the electrode sheet transportation process, a pair of limiting rollers 13 are arranged on the front and rear sides of the thickness measuring component 12. Each pair of limiting rollers 13 are arranged up and down, at least one of which is driven to rotate by a motor, and a gap is left between the upper and lower limiting rollers 13. When the electrode sheet is transported, it passes between the two pairs of limiting rollers 13 in sequence, so that its up and down jitter is limited to the gap range of the two pairs of limiting rollers 13, so as to improve the measurement accuracy of the thickness measuring component 12. Only one pair of limiting rollers 13 can also be set.

[0020] like Figure 1 and Figure 2 As shown, the mounting base 11 includes two upper and lower horizontal modules 111, the horizontal module 111 is located between the two pairs of limiting rollers 13 and is arranged parallel to them, the two ends of the horizontal module 111 are detachably connected to the mounting base 11 by screws, the slider of the horizontal module 111 is oriented toward the other horizontal module 111, the thickness measuring component 12 is connected to the slider of the horizontal module 111, and is driven to slide back and forth by the horizontal module 111 to achieve driving the thickness measuring component 12 to slide along the width direction of the pole piece, which can also be set as a C-shaped frame and driven to slide uniformly by a driving structure; the thickness measuring component 12 measures the distance between each corresponding surface of the pole piece, and calculates the thickness of the pole piece in combination with the total distance between the two thickness measuring components 12.

[0021] like Figure 2As shown, the calibration part 2 includes a calibration material block 21 and a calibration drive component for driving the calibration material block 21 to slide. The calibration material block 21 is located at one end of the horizontal module 111, so that the sliding path of the thickness measuring component 12 not only passes through the conveying path of the electrode piece, but also passes through the calibration material block 21. The sliding direction of the calibration material block 21 is perpendicular to the sliding direction of the thickness measuring component 12, and different standard thicknesses are set along its own sliding direction to realize the switching of different thicknesses for the thickness measuring component 12 to calibrate; Specifically, the upper side and / or lower side of the calibration material block 21 is stepped, corresponding to different standard thicknesses, and the upper side and the lower side may also be set to a symmetrical structure.

[0022] like Figure 2 As shown, the calibration drive assembly includes a calibration module 22, which can also be driven to move by means of gear racks, etc. The calibration part 2 also includes a calibration template 23, which is detachably connected to one side of the mounting seat 11, and the calibration material block 21 and the calibration module 22 are connected to the calibration template 23; Specifically, the mounting base 11 includes a positioning block 113 and a plurality of equal-height abutment blocks 114. A corresponding positioning groove is provided at the bottom of the calibration template 23. The calibration template 23 is inserted downwardly into the positioning block 113 through the positioning groove, and it can also be replaced by other connection methods; finally, the bottom of the calibration template 23 abuts against each abutment block 114 to reduce the contact surface, facilitate cleaning to an equal-height state, and avoid the entire surface contact from causing the calibration material block 21 that is finally installed to tilt due to the presence of debris, etc.

[0023] like Figure 2 As shown, a T-block is connected to the inner side of the calibration material block 21, and a corresponding T-slot 221 is connected to the outer side of the calibration template 23 (in this embodiment, the T-slot 221 is provided in the calibration module 22), guiding the movement of the calibration material block 21 outside the calibration template 23, and the mounting seat 11 is also connected to the T-slot 221 corresponding to the T-slot 221 located between the two horizontal modules 111, so that the calibration material block 21 can reciprocate along the T-slot 221 outside the calibration template 23 and between the two horizontal modules 111, reducing the tilt during the movement, so that the thickness measuring component 12 can accurately measure the thickness of different positions of the calibration material block 21 during calibration; In order to facilitate the replacement of the calibration material block 21, the slider of the calibration module 22 is extended with an extension block 222 toward one end close to the thickness measuring component 12, and the outer side of the extension block 222 is connected to the plug block 223, and a corresponding slot is provided on the inner side of the calibration material block 21. During installation, the slider of the calibration module 22 is moved to the outside of the corresponding end of the calibration module 22. After the calibration material block 21 is plugged into the plug block 223 at the outer end of the calibration module 22, the slider of the calibration module 22 is moved to the other end and reset. The guided insertion of the T-block and the corresponding T-slot 221 is achieved by the movement of the slider of the calibration module 22, thereby completing the connection between the calibration material block 21 and the calibration module 22.

[0024] This embodiment also discloses a calibration method for a positive and negative electrode roller thickness gauge calibration device, comprising the following steps: The calibration piece 2 is installed in the thickness gauge device 1. Specifically, the extension block 222 is extended by the calibration module 22, and the calibration material block 21 is inserted into the insertion block 223 on the outside of the extension block 222 through the slot. Then the extension block 222 is retracted, so that the T-block inside the calibration material block 21 enters the T-slot 221 of the calibration module 22, and the connection between it and the calibration module 22 is completed; The thickness measuring component 12 reciprocates along the width direction of the pole piece within the width range of the pole piece to measure the thickness of different positions of the pole piece; When calibration is required, the thickness measuring component 12 moves away from the electrode width range and moves to the location of the calibration material block 21. The calibration material block 21 moves under the drive of the calibration module 22, and each standard thickness position of known thickness on it is measured in turn in the thickness measuring component 12, and each collected value is collected. The thickness measuring component 12 is calibrated by comparison with the standard value or curve fitting.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A positive and negative electrode roller thickness gauge calibration device, characterized in that: The invention comprises a thickness gauge device and a calibration part. The thickness gauge device comprises a mounting seat and a thickness measuring component connected to the mounting seat. The thickness measuring component is horizontally slidably connected to the mounting seat. The calibration part comprises a calibration material block and a calibration drive component for driving the calibration material block to slide. The sliding path of the thickness measuring component passes through the conveying path of the pole piece and the calibration material block. The sliding direction of the calibration material block is perpendicular to the sliding direction of the thickness measuring component, and different standard thicknesses are set along its own sliding direction.

2. The positive and negative electrode roller thickness gauge calibration device according to claim 1 is characterized in that: The mounting seat comprises two upper and lower horizontal modules; the thickness measuring assembly is connected to the slider of the horizontal module and is driven to slide back and forth by the horizontal module.

3. The positive and negative electrode roller thickness gauge calibration device according to claim 2 is characterized in that: The calibration component comprises a calibration template, which is detachably connected to one side of the mounting seat, and a calibration material block and a calibration drive assembly are connected to the calibration template.

4. The positive and negative electrode roller thickness gauge calibration device according to claim 3 is characterized in that: The inner side of the calibration material block is connected with a T-block / T-slot, and the outer side of the calibration template is connected with a corresponding T-slot / T-block.

5. The positive and negative electrode roller thickness gauge calibration device according to claim 4 is characterized in that: The mounting seat is connected to a T-slot / T-block corresponding to the two horizontal modules.

6. The positive and negative electrode roller thickness gauge calibration device according to claim 3 is characterized in that: The mounting seat comprises a positioning block, a corresponding positioning groove is arranged at the bottom of the calibration template, and the calibration template is inserted downwardly into the positioning block through the positioning groove.

7. The positive and negative electrode roller thickness gauge calibration device according to claim 3 or 6, characterized in that: The mounting seat is opened and connected with a plurality of abutment blocks, and the bottom of the calibration template abuts on the abutment blocks.

8. The positive and negative electrode roller thickness gauge calibration device according to claim 1, characterized in that: The upper side and / or lower side of the calibration material block is stepped, corresponding to different standard thicknesses.

9. The positive and negative electrode roller thickness gauge calibration device according to claim 4, characterized in that: The calibration drive assembly includes a calibration module, a slider of the calibration module extends toward one end of the thickness measuring assembly with an extension block, the outer side of the extension block is connected to the plug block, and a matching slot is provided on the inner side of the calibration material block. After the calibration material block is plugged into the plug block at the outer end of the calibration module, the guided insertion of the T-block and the corresponding T-slot is achieved by moving the slider of the calibration module.

10. A calibration method for the positive and negative electrode roller thickness gauge calibration device according to claim 1, characterized in that: The following steps are included: The calibration piece is installed in the thickness gauge device, and the thickness measuring component moves back and forth in the width direction of the pole piece within the width range of the pole piece to measure the thickness of different positions of the pole piece; When calibration is required, the thickness measuring component moves away from the electrode width range and moves to the location of the calibration material block. The calibration material block moves under the drive of the calibration drive component, and each standard thickness position of known thickness on it is measured in turn in the thickness measuring component, and each collection value is collected to realize the calibration of the thickness measuring component.

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