Pole piece roll cutting device and adhesive method

Abstract

The application relates to the technical field of batteries, and discloses an electrode sheet roll pressing and slitting device and a gluing method. The electrode sheet roll pressing and slitting device comprises a gluing device, a glue cutting device and a gluing auxiliary device, the gluing auxiliary device comprises a cutting positioning block, the cutting positioning block is placed on the surface of the electrode sheet, the cutting positioning block extends along a first direction, and the side surface of the cutting positioning block away from the electrode sheet is used for pasting adhesive tape. The gluing device is used for pasting adhesive tape on the electrode sheet, the adhesive tape extends along a second direction, and part of the adhesive tape is pasted on the side surface of the cutting positioning block away from the electrode sheet. The glue cutting device is used for cutting the adhesive tape on the two sides of the cutting positioning block along the second direction after the gluing device completes pasting of the adhesive tape on the electrode sheet. The gluing auxiliary device disclosed by the application can solve the problem that the ceramic knife cannot cut off the adhesive tape, thereby affecting the cutting of the electrode sheet, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an electrode rolling and slitting device and an adhesive bonding method. Background Technology

[0002] During the production of electrode sheets, long sections often have damaged parts. Typically, the damaged parts are cut off, and the two ends of the cut electrode sheet are then glued together with adhesive tape before being separated. However, because the ceramic cutter cannot cut through the adhesive tape during normal electrode cutting, it affects the cutting process, resulting in low production efficiency. Summary of the Invention

[0003] This application provides an electrode roll pressing and slitting device and an adhesive bonding method, which can solve the problem that the ceramic knife cannot cut the adhesive tape, thus affecting the electrode cutting, thereby improving production efficiency.

[0004] In a first aspect, this application provides an electrode roll pressing and slitting device, including an adhesive bonding device, an adhesive cutting device, and an adhesive bonding auxiliary device;

[0005] The adhesive aid includes a cutting and positioning block, which is placed on the surface of the electrode sheet. The cutting and positioning block extends along a first direction, and the side surface of the cutting and positioning block facing away from the electrode sheet is used to stick adhesive tape. The first direction is the cutting direction of the electrode sheet.

[0006] The adhesive device is used to attach adhesive tape to the electrode sheet. The adhesive tape extends along a second direction, and a portion of the adhesive tape is attached to the side surface of the cutting and positioning block opposite to the electrode sheet. The second direction is perpendicular to the first direction, and the first direction and the second direction are located in a first plane, which is a plane parallel to the surface of the electrode sheet.

[0007] The tape-cutting device is used to cut the tape on both sides of the cutting positioning block along the second direction after the adhesive device has finished applying the tape to the electrode sheet.

[0008] The electrode roll forming and slitting device in this application includes an auxiliary adhesive device. The cutting positioning block of the auxiliary adhesive device is aligned with the cutting direction of the electrode. The auxiliary adhesive device is placed on the surface of the electrode. When applying tape to the electrode, the tape on the portion of the electrode directly opposite the cutting positioning block is adhered to the cutting positioning block. Subsequently, the tape on the cutting positioning block can be cut, leaving the cut portion of the electrode without any tape adhered. When the cutter cuts the electrode, it can cut from the portion of the electrode without tape, thus avoiding cutting the tape. This not only ensures the cutting effect of the electrode but also improves production efficiency.

[0009] Secondly, this application provides an adhesive bonding method using an electrode roll pressing and slitting device as described in the first aspect, the adhesive bonding method comprising:

[0010] The adhesive aid is placed on the surface of the electrode sheet, and the adhesive aid extends along the first direction;

[0011] Adhesive tape is applied to the electrode sheet, with a portion of the tape adhered to the surface of the cutting and positioning block opposite to the electrode sheet;

[0012] The tape is cut on both sides of the cutting positioning block along the second direction using the tape cutting device.

[0013] Remove the cutting positioning block from the surface of the electrode sheet;

[0014] The ends of the tape located on both sides of the cutting and positioning block are trimmed and pressed firmly. Attached Figure Description

[0015] Figure 1 This is an example of an arrangement diagram for attaching adhesive tape to the electrode sheets in an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the structure of the electrode sheet after the tape has been applied in an embodiment of this application;

[0017] Figure 3 for Figure 1 A schematic diagram of a medium adhesive auxiliary device;

[0018] Figure 4 for Figure 1 Another structural schematic diagram of the adhesive auxiliary device;

[0019] Figure 5 for Figure 3 A schematic diagram of a cutting positioning block.

[0020] In the picture:

[0021] 10-Electrode sheet; 20-Pressure rod; 30-Adhesive adhesive auxiliary device; 31-Cutting positioning block; 311-First positioning part; 312-Second positioning part; 313-Groove; 32-Clamping device; 321-First clamping block; 3211-First clamping part; 3212-Second clamping part; 322-Second clamping block; 323-Slot; 324-Rotating shaft; 325-Spring hinge; 3251-First spring sheet; 3252-Second spring sheet; 40-Adhesive tape. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] refer to Figure 1 and Figure 2 In this embodiment, the adhesive aid 30 can be applied to an electrode roll forming and slitting device. Before the electrode roll forming and slitting device performs the two-part separation process on the electrode 10, the damaged parts of the long section of the electrode 10 are usually cut off, and then the two sections of the electrode 10 are bonded together using adhesive tape 40. It can be understood that the adhesive aid 30 in this embodiment can be used to assist in bonding the two sections of the electrode 10.

[0024] The electrode roll forming and slitting device for bonding two electrode segments 10 may include a machine base (not shown in the figure), an adhesive bonding device (not shown in the figure), an adhesive cutting device (not shown in the figure), and the adhesive bonding auxiliary device 30 in this embodiment. In this embodiment, when bonding two electrode segments 10, the two electrode segments 10 are arranged along a first direction, which can be considered as the length direction of the electrode segments 10. The adhesive tape 40 extends along a second direction, which can be considered as the width direction of the electrode segments 10. That is, the first direction is perpendicular to the second direction, and the first and second directions are located in a first plane, which is a plane parallel to the surface of the electrode segments. When cutting the electrode segments 10, the cutting is performed along the first direction. Of course, the above cutting direction is only described as one embodiment. In some other embodiments, the cutting direction of the electrode segments 10 may also be along the width direction of the electrode segments 10. It should be noted that the cutting direction of the electrode segments 10 is perpendicular to the extension direction of the adhesive tape 40.

[0025] Specifically, the machine tool can be used to place two electrode segments 10 to be bonded. The machine tool is equipped with two pressure rods 20, arranged in a first direction, each extending in a second direction. One pressure rod 20 presses against the surface of one electrode segment 10, and the other pressure rod 20 presses against the surface of the other electrode segment 10. In other words, the two pressure rods 20 can respectively position the two electrode segments 10. The length of the pressure rod 20 (i.e., the dimension along the second direction) can be greater than or equal to the width of the electrode segment 10. Thus, the pressure rod 20 can effectively position the electrode segments 10, ensuring that the electrode segments 10 are fixed in position during bonding, thereby guaranteeing the bonding effect.

[0026] refer to Figure 3 and Figure 4An adhesive-assisted device 30 is placed on the side of the electrode 10 facing away from the machine tool. It includes a cutting and positioning block 31 and a clamping device 32. The clamping device 32 may include a first clamping block 321 and a second clamping block 322. The first clamping block 321 may be L-shaped. Specifically, the first clamping block 321 may include a first clamping portion 3211 perpendicular to the electrode 10 and a second clamping portion 3212 parallel to the electrode 10, with a certain distance between the second clamping portion 3212 and the electrode 10. The second clamping block 322 may be connected to the side of the second clamping portion 3212 facing the electrode 10, with a gap between the second clamping block 322 and the first clamping portion 3211, which may extend along a second direction. Furthermore, the distance between the second clamping block 322 and the first clamping portion 3211 may be the same as the width of the pressure rod 20, and the distance between the second clamping portion 3212 and the electrode 10 may also be the same as the height of the pressure rod 20. Understandably, the space between the first clamping block 321 and the second clamping block 322 can be used to pass through the pressure rod 20. That is, when the adhesive assist device 30 is placed on the pressure rod 20, each side of the pressure rod 20 can abut against the first clamping part 3211, the second clamping part 3212 and the second clamping block 322 respectively, so that the pressure rod 20 can play a positioning role for the adhesive assist device 30.

[0027] A slot 323 may be provided on the side of the first clamping block 321 away from the second clamping block 322, and the cutting positioning block 31 may be installed in the slot 323. The cutting positioning block 31 can rotate relative to the first clamping block 321 about a first axis, which can be regarded as a straight line extending along a second direction, so that the cutting positioning block 31 can be pressed against the electrode 10 or disengaged from the electrode 10. Specifically, a rotating shaft 324 may be provided in the slot 323, which can rotate relative to the first clamping block 321 about the first axis. The cutting positioning block 31 can be fixedly connected to the rotating shaft 324. When the rotating shaft 324 rotates relative to the first clamping block 321, it can drive the cutting positioning block 31 to rotate relative to the first clamping block 321. For example, the first clamping block 321 can rotate with the rotating shaft 324 by a pin.

[0028] Understandably, before applying the tape 40 to the electrode 10, the pressure rod 20 and the adhesive application aid 30 can be placed on the surface of the electrode 10. During this process, the adhesive application aid 30 can be placed on the pressure rod 20, fixing the pressure rod 20 relative to the adhesive application aid 30, and then the pressure rod 20 is pressed firmly onto the surface of the electrode 10. Before the pressure plate reaches the surface of the electrode 10, the cutting positioning block 31 can be rotated to a position away from the electrode 10 to prevent the cutting positioning block 31 from scratching the electrode 10 when the pressure rod 20 is pressed onto it.

[0029] In this embodiment, the rotation angle of the cutting positioning block 31 relative to the first clamping block 321 can be 0° to 150°, so that the free end of the cutting positioning block 31 can be rotated to the side facing the second clamping block 322, preventing the cutting positioning block 31 from falling off and damaging the electrode 10 when it is pressed onto the electrode 10.

[0030] refer to Figure 5 The cutting positioning block 31 may include a first positioning part 311 and a second positioning part 312 arranged vertically. The second positioning part 312 is located on the surface of the electrode 10, and the first positioning part 311 is located on the side of the second positioning part 312 opposite to the electrode 10. The dimension of the first positioning part 311 along the second direction is smaller than the dimension of the second positioning part 312 along the second direction. The surface of the first positioning part 311 that is adhered to the adhesive tape 40 is an arc-shaped surface. This arc-shaped surface can be bent toward the second positioning part 312, and the dimension of the arc-shaped surface along the second direction is larger than the dimension of the first positioning part 311 connecting to the second positioning part 312. At this time, the two sides of the first positioning part 311 along the second direction respectively cooperate with the corresponding sides of the second positioning part 312 facing the first positioning part 311 to form a V-shaped groove 313 with an acute angle.

[0031] In this embodiment, the adhesive applicator 30 assists in applying the adhesive tape 40 by first placing the cutting and positioning block 31 at the location where the two electrode sections 10 need to be bonded, with the cutting and positioning block 31 extending along a first direction. The adhesive applicator can then apply the adhesive tape 40 to the connection point of the two electrode sections 10. Notably, when the adhesive tape 40 passes the cutting and positioning block 31, a portion of the adhesive tape 40 adheres to the surface of the first positioning portion 311 facing away from the electrode section 10. After the adhesive tape 40 is applied, the cutting device can cut the adhesive tape 40 on the cutting and positioning block 31 along the extending direction of the groove 313. That is, the cutting position of the adhesive tape 40 on the cutting and positioning block 31 is directly opposite the groove 313, making it easier to cut the adhesive tape 40.

[0032] In addition, it should be understood that by setting the first positioning part 311 to an arc-shaped surface, when the tape 40 is pasted, the tape 40 is more likely to adhere to the surface of the first positioning part 311. When cutting the tape 40 on the positioning block 31, it is easier to cut the tape 40 by cutting at the V-shaped groove 313.

[0033] Alternatively, in some other embodiments, the first positioning part 311 may be cuboid, and the second positioning part 312 may also be cuboid. That is, the first positioning part 311 may be placed vertically on the second positioning part 312. Since the dimension of the first positioning part 311 along the second direction is smaller than the dimension of the second positioning part 312 along the second direction, both sides of the first positioning part 311 can cooperate with the second positioning part 312 to form a stepped structure, thereby facilitating the subsequent cutting of the tape 40.

[0034] The first positioning part 311 and the second positioning part 312 can be a separate structure or an integrated structure; this embodiment does not limit this.

[0035] In this embodiment, after the tape 40 on the cutting positioning block 31 is cut, the adhesive aid 30 can be removed. At this time, the tape 40, which was originally positioned opposite the cutting positioning block 31, has a gap, which causes the tape 40 to become two segments arranged in the second direction. When the electrode 10 is subsequently cut, the blade can cut the electrode 10 along the aforementioned gap. Since there is no tape 40 in the gap, the blade can easily cut the electrode 10.

[0036] Furthermore, the dimension of the side of the first positioning part 311 used for pasting the adhesive tape 40 along the second direction is between 1mm and 20mm. It is understood that the above dimensions allow the gap of the adhesive tape 40 to be between 1mm and 20mm. Since the blade thickness is generally 1mm, when the gap of the adhesive tape 40 is greater than 1mm, it can be ensured that the blade will not contact the adhesive tape 40 when cutting the electrode sheet 10. Controlling the gap of the adhesive tape 40 within 20mm ensures an effective area for the adhesive tape 40 to be pasted on the electrode sheet 10, preventing the edges of the electrode sheet 10 from curling up after cutting, and thus preventing the risk of tape breakage during subsequent roller rolling.

[0037] refer to Figure 4 The second clamping block 322 can be connected to the second clamping part 3212 via a spring hinge 325. The spring hinge 325 may include a first spring plate 3251 and a second spring plate 3252. The first spring plate 3251 can rotate relative to the second spring plate 3252 about a second axis, which can be considered as a straight line extending along a second direction. The first spring plate 3251 can be fixedly connected to the second clamping block 322, and the second spring plate 3252 can be fixedly connected to the second clamping part 3212. When the first spring plate 3251 rotates relative to the second spring plate 3252, it can drive the second clamping block 322 to rotate relative to the first clamping block 321. When the adhesive auxiliary device 30 is placed on the pressure rod 20, the second clamping block 322 can be rotated 90 degrees first, so that the second clamping block 322 is in a state parallel to the pressure rod 20. After the surface of the first clamping part 3211 facing the second clamping block 322 abuts against the surface of the pressure rod 20, the second clamping block 322 can be rotated 90 degrees to return to a state perpendicular to the electrode 10, thereby cooperating with the first clamping part 3211 to clamp the pressure rod 20. It should be understood that by providing a rotatable second clamping block 322, it is easier to fix the adhesive auxiliary device 30 to the pressure rod 20.

[0038] In addition, to facilitate the alignment of the adhesive assist device 30 with the cutting position of the electrode 10, scale lines can be set on the pressure rod 20. When the adhesive assist device 30 is fixed to the pressure rod 20, it can be fixed in a certain position through the scale lines. When the pressure rod 20 is pressed against the electrode 10, the cutting positioning block 31 can be positioned at the cutting position of the electrode 10, thereby improving work efficiency.

[0039] The electrode rolling slitting device in this embodiment can manually operate the adhesive application auxiliary device, adhesive application device, and adhesive cutting device when applying adhesive tape 40 to the electrode 10, or it can automate the process of applying adhesive tape 40. Exemplarily, in addition to the aforementioned adhesive application device and adhesive cutting device, the electrode rolling slitting device may also include a control unit (not shown in the figure), a sensor assembly, a conveying device (not shown in the figure), and a moving device (not shown in the figure). The sensor can be used to detect various signals on the electrode surface, the conveying device can be used to convey the electrode 10 to the position on the base for applying adhesive tape 40, and the moving device is used to drive the pressure rod 20 to move up and down. Furthermore, the sensor assembly, adhesive application device, adhesive cutting device, conveying device, and moving device can all be signal-connected to the control unit.

[0040] In the automated application of adhesive tape 40 by the aforementioned electrode roll pressing and slitting device, the control unit first controls the operation of the conveying device to transport the electrode 10 to the position where the adhesive tape 40 is applied. At this time, the sensor assembly detects a signal that the electrode 10 has been placed in position and sends the signal to the control unit. The control unit can also control the moving device to drive the pressure rod 20 downwards to press the electrode 10. After the cutting positioning block 31 presses against the surface of the electrode 10, the sensor assembly recognizes a first signal that the adhesive application auxiliary device 30 is placed on the surface of the electrode 10. The control unit can then control the adhesive application device to start based on this first signal. The adhesive application device automatically cuts off a piece of adhesive tape 40 with the same width as the electrode 10 and applies the tape 40 to the electrode 10. The sensor assembly again recognizes a second signal that the electrode 10 has been properly adhered with adhesive tape 40. The control unit controls the cutting device to operate based on this second signal, allowing the cutting device to cut the tape 40 along the groove 313 of the cutting positioning block 31. Once the sensor assembly detects that the tape 40 has been cut, the control unit can also control the moving device to remove the pressure bar 20 based on the signal.

[0041] Understandably, by setting up automated tape application 40, not only can manpower and time be saved, but the accuracy of tape cutting 40 can also be improved.

[0042] After a detailed description of the structure of the above-mentioned electrode roll pressing and slitting device, the following will explain the adhesive bonding method using the above-mentioned electrode roll pressing and slitting device.

[0043] The adhesive bonding method of a roller separator or roller press may include the following steps:

[0044] Step S100: Set the adhesive aid 30 on the pressure bar 20;

[0045] Step S200: Move the pressure rod 20 to the surface of the electrode 10 so that the pressure rod 20 presses the electrode 10 tightly;

[0046] Step S300: Place the adhesive aid 30 on the surface of the electrode 10, with the adhesive aid 30 extending along the first direction;

[0047] Step S400: Use an adhesive device to attach tape 40 to the electrode 10. A portion of the tape 40 is attached to the surface of the cutting and positioning block 31 on the side away from the electrode 10.

[0048] Step S500: Use the tape cutting device to cut the tape 40 on both sides of the cutting positioning block 31 along the second direction;

[0049] Step S600: Remove the cutting positioning block 31 from the surface of the electrode 10;

[0050] Step S700: Remove the pressure rod 20 from the surface of the electrode 10;

[0051] Step S800: Press the ends of the tape 40 located on both sides of the cutting positioning block 31 firmly.

[0052] It should be noted that the above adhesive application steps are only illustrative examples. In actual applications, other steps and methods can be used to apply adhesive tape, and this embodiment does not limit this.

[0053] In the above adhesive bonding method, when the electrode roll pressing and slitting device further includes a sensor assembly and a control unit, the step S300 of placing the adhesive bonding auxiliary device 30 on the surface of the electrode 10 may specifically include: first placing the adhesive bonding auxiliary device 30 on the pressure rod 20, the sensor assembly recognizing the signal that the adhesive bonding auxiliary device 30 is placed on the pressure rod 20, and the control unit controlling the pressure rod 20 to move to the surface of the electrode 10 according to the signal.

[0054] Similarly, in step S400 above, the adhesive device is used to attach tape 40 to the electrode 10. Specifically, this may include: the sensor assembly recognizing a first signal that the adhesive device 30 is placed on the surface of the electrode 10, and the control unit controlling the adhesive device to attach tape 40 to the electrode 10 according to the first recognition signal.

[0055] Similarly, in step S500 above, the use of the adhesive cutting device to cut the tape 40 on both sides of the cutting positioning block 31 along the second direction may specifically include: the sensor assembly recognizing a second signal that the electrode 10 has been pasted with the tape 40, and the control unit controlling the adhesive cutting device to cut the tape 40 on both sides of the cutting positioning block 31 along the second direction according to the second signal.

[0056] The electrode roll forming and slitting device and adhesive bonding method provided in this application, by setting a cutting positioning block, create a gap in the adhesive tape at the electrode cutting location, so that the subsequent cutter avoids the adhesive tape when cutting the electrode, ensuring the cutting effect of the electrode. Furthermore, it saves time during electrode cutting, thereby improving production efficiency.

[0057] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. An electrode sheet roll slitting device characterized by comprising: The adhesive device, the cutting device and the adhesive auxiliary device are included. The adhesive auxiliary device includes a cutting positioning block, which is placed on the surface of the pole piece, extends along a first direction, and has a side surface away from the pole piece for pasting an adhesive tape. The adhesive device is used for pasting the adhesive tape on the pole piece, and a part of the adhesive tape is pasted on the side surface of the cutting positioning block away from the pole piece. The cutting device is used for cutting the adhesive tape on both sides of the cutting positioning block along the second direction after the adhesive device finishes pasting the adhesive tape on the pole piece. The cutting positioning block includes a first positioning part and a second positioning part, the second positioning part is located on the surface of the pole piece, and the first positioning part is connected to a side of the second positioning part away from the pole piece. The size of the first positioning part along the second direction is smaller than the size of the second positioning part along the second direction. Two opposite pressure rods are further included, the two pressure rods are arranged along the first direction, and the two pressure rods are respectively located on both sides of the part of the pole piece pasted with the adhesive tape to press the pole piece.

2. The pole piece roll slitting device of claim 1, wherein, The side surface of the first positioning part away from the second positioning part is an arc surface, the arc surface is curved towards the second positioning part, and the size of the arc surface along the second direction is greater than the size of the part of the first positioning part connected to the second positioning part along the second direction, so that the two side edges of the first positioning part along the second direction respectively cooperate with the side surface of the corresponding second positioning part towards the first positioning part to form a V-shaped groove.

3. The pole piece roll slitting device of claim 2, wherein, The cutting device cuts the adhesive tape along the extension direction of the groove.

4. The pole piece roll slitting apparatus of claim 1 wherein, The two side edges of the first positioning part along the second direction are respectively perpendicular to the second positioning part, and the two side edges of the first positioning part along the second direction respectively form a step structure with the second positioning part.

5. The pole piece roll slitting apparatus of claim 4 wherein, The cutting device cuts the adhesive tape along the extension direction of the step structure.

6. The pole piece roll slitting apparatus of claim 2 wherein, The size of the side of the first positioning part away from the second positioning part along the second direction is 1mm-20mm.

7. The pole piece roll slitting apparatus of claim 2 wherein, The first positioning part and the second positioning part are an integral structure.

8. The pole piece roll slitting apparatus of claim 1 wherein, The pressure rod is provided with a scale line.

9. The pole piece roll slitting apparatus of claim 1 wherein, A clamping device is further included, the clamping device includes a first clamping block and a second clamping block, and the cutting positioning block is connected to the first clamping block. The first clamping block and the second clamping block have a gap therebetween, the gap extends along a direction perpendicular to the cutting positioning block, the gap is used for passing the pressure rod, and the first clamping block and the second clamping block clamp the pressure rod passing through the gap.

10. The pole piece roll slitting apparatus of claim 9, wherein, The side of the first clamping block towards the cutting positioning block is provided with a clamping groove, the cutting positioning block is arranged in the clamping groove, and the cutting positioning block can rotate relative to the first clamping block.

11. The pole piece roll slitting apparatus of claim 10 wherein, The rotation angle of the cutting positioning block is 0°-150°.

12. The pole piece roll slitting apparatus of claim 1 wherein, The size of the adhesive tape along the second direction is the same as the size of the pole piece along the second direction.

13. The pole piece roll slitting apparatus of claim 1 wherein, Further comprising a sensor assembly and a control unit; The sensor assembly is used to identify a first signal, which is a signal that the adhesive auxiliary device is placed on the surface of the pole piece, and the control unit is used to control the adhesive device to paste the adhesive tape on the pole piece according to the first identification signal; The sensor assembly is also used to identify a second signal, which is a signal that the pole piece is pasted with the adhesive tape, and the control unit is also used to control the adhesive device to cut the adhesive tape according to the second identification signal.

14. A viscose method using the electrode sheet roll slitting device according to any one of claims 1 to 13, characterized by, The adhesive method comprises: placing the adhesive auxiliary device on the surface of the pole piece; The adhesive device is used to paste the adhesive tape on the pole piece, and a part of the adhesive tape is pasted on the surface of the side of the cutting positioning block away from the pole piece; The cutting device is used to cut the adhesive tape on both sides of the cutting positioning block along the second direction; The cutting positioning block is removed from the surface of the pole piece; The end portions of the adhesive tape on both sides of the cutting positioning block are trimmed and compacted.

15. The method of claim 14, wherein the adhesive is a hot melt adhesive. The pole piece roll cutting device comprises a pressing rod, a sensor assembly and a control unit; The adhesive auxiliary device is placed on the pressing rod, the sensor assembly identifies a signal that the adhesive auxiliary device is placed on the pressing rod, and the control unit controls the pressing rod to move to the surface of the pole piece according to the signal; The sensor assembly identifies the first signal, and the control unit controls the adhesive device to paste the adhesive tape on the pole piece according to the first identification signal; The sensor assembly identifies the second signal, and the control unit controls the cutting device to cut the adhesive tape on the surface of the cutting positioning block along the second direction according to the second signal. The sensor assembly identifies the first signal, and the control unit controls the adhesive device to paste the adhesive tape on the pole piece according to the first identification signal; The sensor assembly identifies the second signal, and the control unit controls the cutting device to cut the adhesive tape on the surface of the cutting positioning block along the second direction according to the second signal.

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