Linear pole piece thickness measuring device and pole piece rolling equipment

Abstract

The utility model provides a linear pole piece thickness measuring device and pole piece rolling equipment. The linear pole piece thickness measuring device comprises a rack, a thickness detector, a linear slide rail and a detection support. The rack is provided with a pole piece material belt transmission channel; the linear sliding rail is fixedly arranged on the rack and is transversely arranged on a conveying path of a pole piece material belt; one end of the linear sliding rail extends out of the rack and forms a stroke adjusting area; the bottom end of the detection support is arranged on the stroke adjusting area and extends towards one side of the rack to form a movable support. The thickness detector is arranged on the detection bracket and is positioned on a conveying path of the pole piece material belt; the movable support is connected to the linear sliding rail in a sliding manner, so that the thickness detector can straightly move back and forth on the conveying path of the pole piece material belt along with the movable support, and the thicknesses of different positions of the pole piece material belt are measured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery pole piece preparation, and in particular to a linear pole piece thickness measuring device and a pole piece rolling device. Background Art

[0002] With the widespread use of new energy batteries, the demand for battery electrodes is gradually increasing. To ensure the flatness of the battery electrodes after coating, they are usually rolled. When the gap between the two rollers deviates slightly, the thickness of the battery electrode will vary. Therefore, most manufacturers will manually check the thickness of the battery electrode using a micrometer after rolling. To further improve efficiency, some manufacturers have conducted further research and development.

[0003] For example, Chinese patent document CN218511638U discloses a new type of roller-pressed electrode thickness measuring device, which includes a fixed plate, a motor installed in the fixed plate, the output shaft of the motor is connected to a screw, a movable bracket of a micrometer is screwed on the screw, a limit plate with a slide groove on the inside is provided on the side of the screw, the slides on both sides of the movable bracket of the micrometer are correspondingly clamped in the slide groove, a micrometer is installed at the end of the movable bracket of the micrometer, a hardness alloy probe is provided at the bottom of the micrometer, and a fixed anvil for supporting the roller-pressed electrode is provided on the lower side of the hardness alloy probe.

[0004] However, the design of the novel roller-pressed electrode thickness measuring device has the following problems:

[0005] Although the above-mentioned new type of roller-pressed electrode thickness measuring device can drive the movable bracket of the micrometer to move left and right by rotating the screw rod, thereby improving the detection efficiency, since the width of the battery electrode is in the range of 500mm to 700mm, the screw rod needs to extend a long distance, and the load-bearing capacity of the screw rod is limited. After pushing the movable bracket of the micrometer to move a long distance, the screw rod is prone to unstable pressure and tilt downward, so the micrometer will also tilt, thereby affecting the accuracy of the thickness measurement. Utility Model Content

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a linear pole piece thickness measuring device and pole piece rolling equipment that can measure the thickness of pole piece strips over long distances with high measurement accuracy.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A linear electrode thickness measuring device comprises a frame and a thickness detector; the frame has an electrode material strip transmission channel, the electrode material strip transmission channel is used to convey the electrode material strip; the thickness detector is used to detect the thickness of the electrode material strip;

[0009] The linear electrode thickness measuring device further includes a linear slide rail and a detection bracket;

[0010] The linear slide is fixedly mounted on the frame and is placed horizontally on the conveying path of the pole piece strip; one end of the linear slide extends out of the frame and forms a stroke adjustment area; the bottom end of the detection bracket is arranged on the stroke adjustment area and extends to one side of the frame to form a movable support; the thickness detector is arranged on the detection bracket and is located on the conveying path of the pole piece strip; the movable support is slidably connected to the linear slide; the movable support is used to slide toward the conveying path of the pole piece strip when pushing the detection bracket to adjust the detection position of the thickness detector.

[0011] In one embodiment, a plurality of support blocks are fixedly mounted on the frame; the plurality of support blocks are spaced apart along the linear slide rail and are respectively fixedly connected to the linear slide rail.

[0012] In one embodiment, the support block includes a vertical support plate and a horizontal support plate connected to each other, and the connection position between the vertical support plate and the horizontal support plate forms a right angle portion; the vertical support plate is fixedly connected to the frame, and the horizontal support plate is fixedly connected to the linear slide rail, and the right angle portion is supported at the position between the frame and the linear slide rail.

[0013] In one embodiment, the thickness detector includes a detection body and an anvil, the anvil is arranged on the movable support, and the anvil is used to support the bottom of the pole piece strip; the top end of the detection bracket extends above the anvil to form a mounting cantilever; the detection body is arranged on the mounting cantilever, and the probe of the detection body is opposite to the anvil, so that the pole piece strip moves between the detection body and the anvil, and when measuring the thickness, the probe and the anvil jointly resist the two sides of the pole piece strip.

[0014] In one embodiment, the detection body includes a digital display, a position sensor and the probe, and the digital display is provided with a sliding through hole; the probe is slidably arranged in the sliding through hole and faces the anvil; the position sensor is built into the digital display, and the position sensor is electrically connected to the digital display; the position sensor is arranged close to the probe, and the position sensor is used to detect the position of the probe.

[0015] In one embodiment, the mounting cantilever is further provided with a push-pull driver, which is arranged on a side of the digital display away from the measuring anvil; a push-pull rod of the push-pull driver is connected to the measuring head.

[0016] In one embodiment, a detection gap is formed between the probe and the anvil, a movable gap is formed between the mounting cantilever and the movable support, and the detection gap and the movable gap are connected to form a displacement detection gap; the pole piece strip is passed through the displacement detection gap.

[0017] In one embodiment, a pull rod is provided on the detection bracket.

[0018] In one embodiment, a plurality of guide holes are opened on the frame, and the plurality of guide holes are coaxially arranged relative to each other, and the pull rod slides through the plurality of guide holes in sequence.

[0019] A pole piece rolling device comprises the linear pole piece thickness measuring device of any one of the above embodiments.

[0020] Compared with the prior art, the present disclosure has at least the following advantages:

[0021] 1) Since one end of the linear slide extends outward from the frame to form a stroke adjustment area, the bottom of the detection bracket on the stroke adjustment area extends toward one side of the frame to form a movable support. When the detection bracket is pushed, the movable support can slide back and forth in and out of the frame. By arranging the thickness detector on the detection bracket, since the thickness detector is located above the conveying path of the pole piece material strip, the thickness detector can move back and forth on the conveying path of the pole piece material strip with the movable support, thereby measuring the thickness of the pole piece material strip at different positions.

[0022] 2) Compared with the novel roller-type electrode thickness measuring device in the prior art, the above-mentioned linear electrode thickness measuring device has a movable support that is slidably connected to a linear slide rail, and the linear slide rail is fixedly mounted on the frame. The linear slide rail has a better load-bearing effect than the lead screw, so that the movable support can move smoothly along the linear slide rail relative to the frame, and then the detection bracket can be loaded with a thickness detector and move straightly 500mm to 700mm on the conveying path of the electrode material strip, thereby reducing the degree of skewness of the thickness detector and ultimately improving the accuracy of thickness measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 An exploded view of a linear electrode thickness measuring device according to an embodiment of the present disclosure;

[0025] Figure 2 for Figure 1The schematic structural diagram of the linear electrode thickness measuring device shown;

[0026] Figure 3 for Figure 1 A partial enlarged view shown in the middle;

[0027] Figure 4 for Figure 2 The enlarged view of the part shown at B in the middle;

[0028] Figure 5 for Figure 1 A partial cross-sectional view of the linear electrode thickness measuring device shown;

[0029] Figure 6 for Figure 1 The actual picture of the linear electrode thickness measuring device is shown.

[0030] : 100, linear electrode thickness measuring device; 110, frame; 1110, support block; 1111, vertical support plate; 1112, horizontal support plate; 1113, right-angle portion; 1120, guide hole; 1130, electrode material strip transmission channel; 120, thickness detector; 1210, detection body; 1211, digital display; 1213, probe; 1214, sliding through hole; 1220, anvil; 1230, push-pull drive; 130, linear slide rail; 1310, stroke adjustment area; 140, detection bracket; 1410, movable support; 1420, cantilever installation; 1430, displacement detection gap; 1431, detection gap; 1432, movable gap; 1440, pull rod. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0035] like Figure 1 and Figure 2 As shown, a linear electrode thickness measuring device 100 of an embodiment includes a frame 110, a thickness detector 120, a linear slide 130 and a detection bracket 140; the frame 110 has a electrode material strip transmission channel 1130, which is used to convey the electrode material strip; the thickness detector 120 is used to detect the thickness of the electrode material strip; the linear slide 130 is fixedly installed on the frame 110 and is placed horizontally on the transmission path of the electrode material strip; one end of the linear slide 130 extends out of the frame 110 The bottom end of the detection bracket 140 is arranged on the stroke adjustment area 1310, and extends to one side of the frame 110 to form a movable support 1410; the thickness detector 120 is arranged on the detection bracket 140 and is located on the conveying path of the pole piece material strip; the movable support 1410 is slidably connected to the linear slide rail 130; the movable support 1410 is used to slide toward the conveying path of the pole piece material strip when pushing the detection bracket 140 to adjust the detection position of the thickness detector 120.

[0036] It can be understood that since one end of the linear slide 130 extends outward from the frame 110 to form a stroke adjustment area 1310, the bottom of the detection bracket 140 on the stroke adjustment area 1310 extends toward one side of the frame 110 to form a movable support 1410. When the detection bracket 140 is pushed, the movable support 1410 can slide back and forth in and out of the frame 110. By arranging the thickness detector 120 on the detection bracket 140, since the thickness detector 120 is located above the conveying path of the pole piece material strip, the thickness detector 120 can move back and forth on the conveying path of the pole piece material strip with the movable support 1410, thereby measuring the thickness of the pole piece material strip at different positions.

[0037] It can be understood that compared with the new type of roller-pressed electrode thickness measuring device in the prior art, the above-mentioned linear electrode thickness measuring device 100, since the movable support 1410 is slidably connected to the linear slide 130, the linear slide 130 is fixedly mounted on the frame 110, and the linear slide 130 has a better load-bearing effect than the screw rod, so that the movable support 1410 can move smoothly along the linear slide 130 relative to the frame 110, and then the detection bracket 140 can load the thickness detector 120 and move straightly 500mm to 700mm on the conveying path of the electrode material strip, thereby reducing the skewness of the thickness detector 120 and ultimately improving the accuracy of the thickness measurement.

[0038] Combine Figure 1 As shown, in one embodiment, a plurality of support blocks 1110 are fixedly provided on the frame 110; the plurality of support blocks 1110 are arranged at intervals along the linear slide rail 130 and are respectively fixedly connected to the linear slide rail 130. It can be understood that since the plurality of support blocks 1110 fixed on the frame 110 are arranged at intervals along the linear slide rail 130 and the plurality of support blocks 1110 are respectively fixedly connected to the linear slide rail 130, the linear slide rail 130 and the frame 110 can be more tightly connected, thereby further improving the load-bearing capacity of the linear slide rail 130 for the detection bracket 140 and reducing the occurrence of skewness of the thickness detector 120.

[0039] Combine Figure 1 and Figure 3 As shown, in this embodiment, the support block 1110 includes a vertical support plate 1111 and a horizontal support plate 1112 connected to each other, and the connection position of the vertical support plate 1111 and the horizontal support plate 1112 forms a right angle portion 1113; the vertical support plate 1111 is fixedly connected to the frame 110, the horizontal support plate 1112 is fixedly connected to the linear guide rail 130, and the right angle portion 1113 is abutted at the position between the frame 110 and the linear guide rail 130. It can be understood that since the vertical support plate 1111 is fixedly connected to the frame 110 and the horizontal support plate 1112 is fixedly connected to the linear guide rail 130, the fixing effect between the linear guide rail 130 and the frame 110 is enhanced, and the right angle portion 1113 abuts at the position between the frame 110 and the linear guide rail 130, the vertical relationship between the linear guide rail 130 and the frame 110 can be maintained, thereby reducing the impact of the weight of the detection bracket 140 on the flatness of the linear guide rail 130.

[0040] In one embodiment, the thickness detector 120 may be a micrometer, a laser thickness gauge, etc., which is not limited here, and those skilled in the art may also make other selections as needed.

[0041] Combine Figure 2 and Figure 4As shown, in one embodiment, the thickness detector 120 includes a detection body 1210 and an anvil 1220, the anvil 1220 is arranged on a movable support 1410, and the anvil 1220 is used to support the bottom of the pole piece strip; the top end of the detection bracket 140 extends above the anvil 1220 to form a mounting cantilever 1420; the detection body 1210 is arranged on the mounting cantilever 1420, and the probe 1213 of the detection body 1210 is opposite to the anvil 1220, so that the pole piece strip moves between the detection body 1210 and the anvil 1220, and when measuring the thickness, the probe 1213 and the anvil 1220 jointly press against both sides of the pole piece strip. It can be understood that since the stylus 1213 of the detection body 1210 is opposite to the anvil 1220, the anvil 1220 supports the bottom of the electrode material strip, so that the electrode material strip moves between the detection body 1210 and the anvil 1220. When measuring the thickness, the stylus 1213 and the anvil 1220 jointly abut against both sides of the electrode material strip, so that the thickness of the electrode material strip can be obtained by obtaining the distance between the anvil 1220 and the stylus 1213. Specifically, the thickness detector 120 can be a micrometer, which is not limited here.

[0042] Combine Figure 4 and Figure 5 As shown, in this embodiment, the detection body 1210 includes a digital display 1211, a position sensor, and a stylus 1213. The digital display 1211 is provided with a sliding through hole 1214. The stylus 1213 is slidably disposed in the sliding through hole 1214 and faces the anvil 1220. The position sensor is built into the digital display 1211 and is electrically connected to the digital display 1211. The position sensor is disposed near the stylus 1213 and is used to detect the position of the stylus 1213. It can be understood that since the stylus 1213 is slidably disposed in the sliding through hole 1214, the position sensor is built into the digital display 1211, and the position sensor is electrically connected to the digital display 1211, the position change of the stylus 1213 can be detected by the position sensor, thereby obtaining the thickness of the electrode material strip, and the thickness value of the electrode material strip can be directly displayed on the digital display 1211, thereby making it more convenient to use.

[0043] It should be noted that the method of detecting the position change of the probe 1213 using a position sensor, the method of deriving the thickness of the electrode material strip from the position change of the probe 1213, the method of displaying the thickness value of the electrode material strip on the digital display 1211, the method of obtaining the spacing between the anvil 1220 and the probe 1213, and the method of deriving the thickness of the electrode material strip from the spacing between the anvil 1220 and the probe 1213 are all prior arts and do not fall within the scope of protection of this disclosure. This disclosure only protects the various components of the linear electrode thickness measurement device 100 and their positions and connection relationships.

[0044] Combine Figure 5Furthermore, a push-pull driver 1230 is provided on the cantilever 1420 , and the push-pull driver 1230 is arranged on the side of the digital display 1211 away from the anvil 1220 ; a push-pull rod of the push-pull driver 1230 is connected to the probe 1213 . It can be understood that because the anvil 1220 supports the bottom of the pole piece material strip, the probe 1213 is slidably set in the sliding through hole 1214. By connecting the probe 1213 to the push-pull rod of the push-pull driver 1230, the push-pull driver 1230 can drive the probe 1213 to rise and fall and slide in the sliding through hole 1214. When the thickness of the pole piece material strip needs to be measured, the push-pull driver 1230 lowers the probe 1213 so that the probe 1213 is against the top of the pole piece material strip to cooperate with the anvil 1220 to clamp the pole piece material strip for thickness detection; when the thickness detection position of the pole piece material strip needs to be changed, the push-pull driver 1230 lifts the probe 1213 so that the probe 1213 is separated from the anvil 1220. At this time, the detection position of the thickness detector 120 can be adjusted by pushing the detection bracket 140.

[0045] Combine Figure 1 and Figure 4 As shown, in one embodiment, a detection gap 1431 is formed between the probe 1213 and the anvil 1220, and a movable gap 1432 is formed between the cantilever 1420 and the movable support 1410. The detection gap 1431 and the movable gap 1432 are connected to form a displacement detection gap 1430; the displacement detection gap 1430 is used to pass the pole piece strip. It can be understood that since a detection gap 1431 is formed between the probe 1213 and the anvil 1220, a movable gap 1432 is formed between the cantilever 1420 and the movable support 1410, the movable gap 1432 is formed by connecting the cantilever 1420 and the movable support 1410, and by inserting the movable support 1410 into the displacement detection gap 1430, when the thickness detection position of the electrode material strip needs to be changed, the probe 1213 can be lifted to enlarge the detection gap 1431. At this time, the detection bracket 140 can be pushed to allow the electrode material strip to move freely in the movable gap 1432 and the detection gap 1431, thereby avoiding interference between the movable support 1410 and the electrode material strip, and making it more convenient to adjust the detection position of the thickness detector 120.

[0046] Combine Figure 1 As shown, in one embodiment, a pull rod 1440 is provided on the detection bracket 140. It can be understood that by providing the pull rod 1440 on the detection bracket 140, the operator can pull the detection bracket 140 to slide at a distance through the pull rod 1440, which is more convenient to use.

[0047] Combine Figure 2 and Figure 3As shown, in one embodiment, a plurality of guide holes 1120 are provided on the frame 110, and the plurality of guide holes 1120 are coaxially arranged relative to each other, and the pull rods 1440 are sequentially slidably inserted into the plurality of guide holes 1120. It can be understood that by providing the plurality of guide holes 1120 on the frame 110 and by allowing the pull rods 1440 to sequentially slide through the plurality of guide holes 1120, when an operator pulls the pull rods 1440, the pull rods 1440 can slide straight under the guidance of the guide holes 1120, thereby ensuring that the pulling direction of the detection bracket 140 remains stable, and further, the detection bracket 140 can slide straight relative to the frame 110.

[0048] Combine Figure 1 As shown, a pole piece rolling device includes a linear pole piece thickness measuring device 100 according to any of the above embodiments. It can be understood that by applying the linear pole piece thickness measuring device 100 disclosed in the present invention to the pole piece rolling device, since one end of the linear slide 130 extends outward from the frame 110 to form a stroke adjustment area 1310, the bottom of the detection bracket 140 on the stroke adjustment area 1310 extends toward one side of the frame 110 to form a movable support 1410. When the detection bracket 140 is pushed, the movable support 1410 can slide back and forth inside and outside the frame 110. By arranging the thickness detector 120 on the detection bracket 140, since the thickness detector 120 is located above the conveying path of the pole piece strip, the thickness detector 120 can move back and forth on the conveying path of the pole piece strip with the movable support 1410, thereby measuring the thickness of the pole piece strip at different positions.

[0049] Compared with the prior art, the present disclosure has at least the following advantages:

[0050] 1) Since one end of the linear slide 130 extends outward from the frame 110 to form a stroke adjustment area 1310, the bottom of the detection bracket 140 on the stroke adjustment area 1310 extends toward one side of the frame 110 to form a movable support 1410. When the detection bracket 140 is pushed, the movable support 1410 can slide back and forth in and out of the frame 110. By arranging the thickness detector 120 on the detection bracket 140, since the thickness detector 120 is located above the conveying path of the pole piece material strip, the thickness detector 120 can move back and forth on the conveying path of the pole piece material strip with the movable support 1410, thereby measuring the thickness of the pole piece material strip at different positions.

[0051] 2) Compared with the novel roller-type electrode thickness measuring device in the prior art, the above-mentioned linear electrode thickness measuring device 100 has a movable support 1410 that is slidably connected to the linear slide 130, and the linear slide 130 is fixedly mounted on the frame 110. The linear slide 130 has a better load-bearing effect than the lead screw, so that the movable support 1410 can move smoothly along the linear slide 130 relative to the frame 110, and the detection bracket 140 can load the thickness detector 120 and move straightly 500mm to 700mm on the conveying path of the electrode material strip, thereby reducing the degree of skewness of the thickness detector 120 and ultimately improving the accuracy of thickness measurement.

[0052] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art could make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. A linear electrode thickness measuring device, comprising a frame and a thickness detector; the frame having an electrode strip transmission channel, the electrode strip transmission channel being used to convey the electrode strip; the thickness detector being used to detect the thickness of the electrode strip; It is characterized in that The linear electrode thickness measuring device further includes a linear slide rail and a detection bracket; The linear slide is fixedly mounted on the frame and is placed horizontally on the conveying path of the pole piece strip; one end of the linear slide extends out of the frame and forms a stroke adjustment area; the bottom end of the detection bracket is arranged on the stroke adjustment area and extends to one side of the frame to form a movable support; the thickness detector is arranged on the detection bracket and is located on the conveying path of the pole piece strip; the movable support is slidably connected to the linear slide; the movable support is used to slide toward the conveying path of the pole piece strip when pushing the detection bracket to adjust the detection position of the thickness detector.

2. The linear electrode thickness measuring device according to claim 1, characterized in that: A plurality of support blocks are fixedly arranged on the frame; the plurality of support blocks are arranged at intervals along the linear slide rail and are respectively fixedly connected to the linear slide rail.

3. The linear electrode thickness measuring device according to claim 2, characterized in that: The support block includes a vertical support plate and a horizontal support plate connected to each other, and the connection position of the vertical support plate and the horizontal support plate forms a right angle portion; the vertical support plate is fixedly connected to the frame, and the horizontal support plate is fixedly connected to the linear slide rail, and the right angle portion is supported at the position between the frame and the linear slide rail.

4. The linear electrode thickness measuring device according to claim 1, characterized in that: The thickness detector includes a detection body and an anvil, the anvil is arranged on the movable support, and the anvil is used to support the bottom of the pole piece strip; the top end of the detection bracket extends above the anvil to form a mounting cantilever; the detection body is arranged on the mounting cantilever, and the probe of the detection body is opposite to the anvil, so that the pole piece strip moves between the detection body and the anvil, and when measuring the thickness, the probe and the anvil jointly press against both sides of the pole piece strip.

5. The linear electrode thickness measuring device according to claim 4, characterized in that: The detection body includes a digital display, a position sensor and the probe, and a sliding through hole is opened on the digital display; the probe is slidably set in the sliding through hole and faces the anvil; the position sensor is built into the digital display, and the position sensor is electrically connected to the digital display; the position sensor is set close to the probe, and the position sensor is used to detect the position of the probe.

6. The linear electrode thickness measuring device according to claim 5, characterized in that: The mounting cantilever is further provided with a push-pull driver, which is arranged on a side of the digital display away from the measuring anvil; a push-pull rod of the push-pull driver is connected to the measuring head.

7. The linear electrode thickness measuring device according to claim 4, characterized in that: A detection gap is formed between the probe and the anvil, a movable gap is formed between the mounting cantilever and the movable support, and the detection gap and the movable gap are connected to form a displacement detection gap; the pole piece strip is passed through the displacement detection gap.

8. The linear electrode thickness measuring device according to claim 1, characterized in that: A pull rod is provided on the detection bracket.

9. The linear electrode thickness measuring device according to claim 8, characterized in that: The frame is provided with a plurality of guide holes, which are coaxially arranged relative to each other, and the pull rods are slidably passed through the plurality of guide holes in sequence.

10. A pole piece rolling device, characterized in that: The device comprises the linear electrode thickness measuring device according to any one of claims 1 to 9.

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