Dust removal box and cutting device

Abstract

The utility model discloses a dust removal box and a cutting device, the dust removal box comprises a box body, a cavity is formed in the box body, the box body extends in a first direction, the box body comprises a dust removal part extending in the first direction, and a plurality of dust removal holes communicating with the cavity are formed in the dust removal part; the avoiding groove is formed in the box body and avoids the dust removal part, and the avoiding groove and the dust removal part are located on the same side of the box body. According to the dust removal box provided by the embodiment of the invention, the avoiding grooves for avoiding the tabs are formed in the box body, so that the situation that the tabs are scratched by the dust removal box can be reduced, and further, the finally formed battery cell has good electrical performance.

Description

Technical Field

[0001] The present application relates to the technical field of dust removal during pole piece cutting, and in particular to a dust removal box and a cutting device. Background Art

[0002] In the production process of battery cells, a cutting device is required to cut the pole pieces, and the dust generated by the cutting has a great influence on the performance of the battery cells. Therefore, the dust generated by the cutting needs to be cleaned.

[0003] In the related art, a dust removal box is usually used in the cutting device to remove the cutting dust. However, during the cutting and transportation of the electrode sheet, the electrode tab of the electrode sheet is easily scratched by the dust removal box, resulting in the undesirable phenomenon of the electrode tab folding and warping, which leads to damage to the electrode tab. Damage to the electrode tab will also affect the performance of the battery cell and reduce the quality of the battery cell. Utility Model Content

[0004] The embodiment of the present application discloses a dust removal box, which can reduce the scratches on the pole ears of the pole pieces when removing dust from the pole pieces, so that the pole ears have a good appearance, thereby improving the performance of the battery cell.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the present application provides a dust removal box for dust removal, which includes: a box body, a cavity is formed in the box body, the box body extends along a first direction, the box body includes a dust removal part extending along the first direction, and the dust removal part is provided with a plurality of dust removal holes connected with the cavity; an avoidance groove is formed in the box body and avoids the dust removal part, and the avoidance groove and the dust removal part are located on the same side of the box body.

[0006] In a possible implementation of the first aspect, there are two avoidance grooves, the two avoidance grooves are spaced apart along the first direction, and the dust removal part is located between the two avoidance grooves.

[0007] In a possible implementation manner of the first aspect, the box body includes a first surface and a second surface opposite to each other along a second direction, the second direction is perpendicular to the first direction, and the avoidance groove passes through the first surface and the second surface respectively.

[0008] In a possible implementation of the first aspect, a first arc transition portion is formed at a connection between the avoidance groove and the first surface; and / or a second arc transition portion is formed at a connection between the avoidance groove and the second surface.

[0009] In a possible implementation of the first aspect, the dust removal box is used to remove dust from a pole piece provided with a pole ear, and along the first direction, a width D1 of the avoidance groove is greater than a length D2 of the pole ear extending from the pole piece.

[0010] In a possible implementation of the first aspect, a circular arc transition surface is formed at a connection between a groove side wall of the avoidance groove and the dust removal portion.

[0011] The second aspect of the present application provides a cutting device, which includes a cutting channel for cutting pole pieces, and the cutting device includes: a bracket assembly; a first dust box and a second dust box, the first dust box and the second dust box are respectively the dust boxes provided in the first aspect embodiment of the present application, and the first dust box and the second dust box are arranged on the bracket assembly; the first dust box and the second dust box are respectively located on both sides of the cutting channel, and the notches of the avoidance grooves in the first dust box and the second dust box are arranged relatively.

[0012] In a possible implementation of the second aspect, the cutting device also includes: a first mounting member, the first mounting member is arranged on the bracket assembly, and the first dust removal box is arranged on the bracket assembly through the first mounting member; the first dust removal box can adjust the installation position through a first adjustment part arranged on the first mounting member.

[0013] In a possible implementation of the second aspect, the first adjustment portion is a waist-shaped hole, the waist-shaped hole extends along a first direction of the first dust removal box, and the first dust removal box is mounted to the first mounting member through a first fastener.

[0014] In a possible implementation of the second aspect, the cutting device further includes:

[0015] The second mounting member is arranged on the bracket assembly, and the second dust removal box is arranged on the bracket assembly through the second mounting member; the second dust removal box can adjust the installation position through the second adjustment part arranged on the second mounting member.

[0016] In a possible implementation of the second aspect, the second adjustment portion is a waist-shaped hole, the waist-shaped hole extends along the first direction of the second dust removal box, and the second dust removal box is mounted to the second mounting member through a second fastener.

[0017] In a possible implementation of the second aspect, the bracket assembly includes a bracket and a knife seat that can move relative to the bracket in a controllable manner, and the cutting device includes: a first cutter, the first cutter is arranged on the bracket; a second cutter, the second cutter is arranged on the knife seat, and the second cutter can approach or move away from the first cutter under the drive of the knife seat; a first mounting member is arranged on the bracket, and the second mounting member is arranged on the knife seat, and the second dust removal box is close to or away from the first dust removal box under the drive of the knife seat.

[0018] In a possible implementation of the second aspect, a first distance L1 between the first dust removal box and the second dust removal box is greater than a second distance L2 between the first cutter and the second cutter.

[0019] The dust removal box provided in the embodiment of the present application, during the process of dust removal on the electrode, avoids the electrode ears on the electrode through the avoidance grooves provided on the box body, thereby reducing the situation where the dust removal box scratches the electrode ears. This ensures that the dust removal box is as close as possible to the electrode to efficiently remove dust on the surface of the electrode, and ensures that the electrode ears of the electrode have a good appearance shape, so that the finally formed battery cell has good electrical performance.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of a pole piece;

[0023] Figure 2 One of the process diagrams of the cutting device provided in the embodiment of the present application when in use;

[0024] Figure 3 The second process diagram of the cutting device provided in the embodiment of the present application when in use;

[0025] Figure 4 One of the structural schematic diagrams of the dust removal box provided in the embodiment of the present application;

[0026] Figure 5 The second structural schematic diagram of the dust removal box provided in the embodiment of the present application;

[0027] Figure 6 The third structural schematic diagram of the dust removal box provided in the embodiment of the present application;

[0028] Figure 7 A fourth structural schematic diagram of the dust removal box provided in an embodiment of the present application;

[0029] Figure 8 A schematic side view of the structure of a cutting device provided in an embodiment of the present application;

[0030] Fig. 9 One of the structural schematic diagrams of the cutting device provided in the embodiment of the present application;

[0031] Fig.10 The second structural schematic diagram of the cutting device provided in the embodiment of the present application;

[0032] Fig.11 The third structural schematic diagram of the cutting device provided in the embodiment of the present application;

[0033] Fig.12 This is the fourth structural schematic diagram of the cutting device provided in the embodiment of the present application.

[0034] Description of reference numerals:

[0035] 100-pole piece, 101-pole ear, 200-insertion mechanism, 300-feeding roller, 400-guide plate, 01-dust removal box, 10-box body, 11-cavity, 12-dust removal part, 13-dust removal hole, 14-avoidance groove, 15-first surface, 16-second surface, 17-first circular arc transition part, 18-circular arc transition surface, 01a-first dust removal box, 01b-second dust removal box, 02-cutting device, 20-bracket assembly, 201-bracket, 202-knife seat, 21-first mounting member, 211-first adjusting part, 22-second mounting member, 221-second adjusting part, 23-cutter assembly, 231-first cutter, 232-second cutter, 24-driving device, 25-first guide rod, 26-elastic assembly, 261-elastic member, 262-second guide rod, 27-abutment member. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0038] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0039] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0041] As shown in FIG. 1 , the structure of the pole piece 100 is shown. Specifically, the cutting device 02 is mainly used to cut and shape the pole piece 100 shown in the figure. Generally speaking, the edge of the pole piece 100 has a plurality of edges along the width direction of the pole piece 100 (i.e. Figure 1 The plurality of pole ears 101 are arranged along the length direction of the pole piece 100 (i.e., the X direction in the figure). Figure 1 The Y direction in the image is used to set the interval.

[0042] like Figure 2 and Figure 3 As shown, the electrode strip is fed into the cutting device 02 through the inserting mechanism 200. After the cutting device 02 cuts the electrode piece, the cut electrode piece 100 enters the next processing step through the guide plate 400 and the feeding roller 300. Along the conveying direction of the electrode piece 100, the inserting mechanism 200 is located in the upstream direction of the cutting device 02, and the feeding roller 300 is located in the downstream direction of the cutting device 02. During the downstream movement of the cut electrode piece 100, the dust removal box 01 in the cutting device 02 is used for dust removal to remove the dust adsorbed on the surface of the electrode piece 100. In the related art, it is during this process that the electrode ear is easily scratched with the dust removal box, which causes the electrode ear to warp or even fold.

[0043] Based on this, the present application provides a dust removal box 01, which can avoid the position of the tab 101 during the dust removal process of the pole piece 100, thereby reducing the deformation of the tab 101 caused by scratches, which is conducive to the tab 101 forming a good appearance. In addition, while the dust removal box 01 reduces the scratches on the tab 101, it does not affect the dust removal effect of the dust removal box 01, ensuring the quality of the battery cell.

[0044] Please combine Figures 4 to 7 As shown, the embodiment of the present application provides a dust removal box 01, which includes a box body 10, and a cavity 11 is formed in the box body 10. The box body 10 may include a dust removal part 12, and the dust removal part 12 is used to face and approach the pole piece 100 to effectively clean the dust attached to the pole piece 100. Since the pole piece 100 has a certain width (such as Figure 1 In order to fit the pole piece 100 and perform comprehensive dust removal on the pole piece 100, the box body 10 and the dust removal part 12 both extend along the first direction (such as Figure 4The first direction corresponds to the width direction of the pole piece 100.

[0045] The dust removal part 12 is provided with a dust removal hole 13 connecting the cavity 11 and the outside. The box body 10 can be connected to an air duct, which can be connected to a negative pressure dust removal device, and the air containing dust can be sucked into the dust removal box 01 from the dust removal hole 13, and then the dust attached to the pole piece 100 and around the pole piece 100 is discharged from the working environment of cutting the pole piece 100, thereby realizing efficient and contactless dust removal.

[0046] The avoidance groove 14 is formed in the box body 10 and is arranged to avoid the dust removal part 12. Since the cutting of the electrode piece 100 needs to avoid the opening of the electrode ear 101, the dust removal hole 13 does not need to be arranged in the avoidance groove 14, so the avoidance groove 14 can be arranged to avoid each other with the dust removal part 12 along the first direction. In this way, it can be ensured that when the dust removal part 12 absorbs dust, the multiple dust removal holes 13 on the dust removal part 12 can be concentrated to correspond to the electrode piece 100, thereby ensuring the dust removal effect of the dust removal box 01.

[0047] The avoidance groove 14 and the dust removal part 12 are facing the same side of the box body 10, so that the avoidance groove 14 and the dust removal hole 13 are facing the pole ear 101 and the pole piece 100 at the same time. The avoidance groove 14 is recessed into the cavity 11 of the box body 10 to stay away from the pole ear 101 extending from the pole piece 100, thereby reducing the dust removal box 01 from scratching the pole ear 101.

[0048] It can be understood that in order to ensure the dust removal effect, the dust removal part 12 of the dust removal box 01 needs to be as close to the pole piece 100 as possible to absorb more dust, but since the thickness of the pole ear 101 on the pole piece 100 is relatively thin, if the pole ear 101 rubs against the dust removal box 01 during the dust removal process of the dust removal box 01 on the pole piece 100, it will cause the pole ear 101 to be warped, wrinkled and folded. Therefore, by providing the avoidance groove 14 on the box body 10, the occurrence of the dust removal box 01 rubbing against the pole ear 101 can be reduced without changing the distance between the dust removal part 12 and the pole piece 100.

[0049] In this way, the dust removal box 01 provided in the embodiment of the present application can reduce the possibility of the pole ear 101 being scratched by the dust removal box 01 by setting an avoidance groove 14 for avoiding the pole ear 101 on the box body 10, thereby ensuring that the finally formed battery cell has good electrical performance.

[0050] In order to match the shape of the pole piece 100, that is, the pole ears 101 can extend from both sides of the pole piece 100 in the width direction, in another embodiment, the number of the avoidance grooves 14 is two, and the two avoidance grooves 14 are arranged in the box body 10 at intervals along the first direction, so that the two avoidance grooves 14 can respectively correspond to the pole ears 101 extending from both sides of the pole piece 100 in the width direction.

[0051] The dust removal part 12 is located between the two avoidance grooves 14, so that the dust removal part 12 on the box body 10 corresponds to the pole piece 100, and the two avoidance grooves 14 located at the ends of the box body 10 correspond to the pole ears 101 extending from both sides of the pole piece 100, so that the dust removal box 01 can better remove dust and avoid the pole ears 101.

[0052] like Figure 5 and Figure 7 As shown, the first direction can be regarded as the length direction of the box body 10, and the second direction (Y direction in the figure) is the thickness or thickness direction of the box body 10. Along the second direction, the box body 10 includes a first surface 15 and a second surface 16 that are oppositely arranged, and the bottom of the avoidance groove 14 can be formed on a third surface of the box body 10 located between the first surface 15 and the second surface 16.

[0053] The two ends of the avoidance groove 14 are respectively connected to the first surface 15 and the second surface 16, that is, the avoidance groove 14 is connected to the box body 10 along the height direction of the dust removal part 12. Since the pole piece 100 and the pole ear 101 will move along the height direction of the dust removal box 01 when the dust removal box 01 is collecting dust, the avoidance groove 14 that is connected to the box body 10 along the height direction of the dust removal box 01 can further reduce the dust removal box 01 and the moving pole ear 101 from scratching.

[0054] In order to reduce the possibility of the dust box 01 scratching the pole ear 101, optionally, a first arc transition portion 17 is formed at the connection between the avoidance groove 14 and the first surface 15; and / or a second arc transition portion is formed at the connection between the avoidance groove 14 and the second surface 16.

[0055] During the cutting process of the pole piece 100, the vibration generated by the cutting may cause the pole ear 101 to be warped or folded. Although the avoidance groove 14 has avoided the pole ear 101, there may be a special situation where the pole ear 101 contacts the avoidance groove 14. The connection between the avoidance groove 14 and the first surface 15 and / or the second surface 16 is formed into an arc transition portion, which can prevent the pole ear 101 from being scratched by the connection position between the avoidance groove 14 and the first surface 15 and the second surface 16 of the box body 10.

[0056] Specifically, the first arc transition portion 17 and the second arc transition portion respectively have a flat and smooth surface of arc transition to avoid scratching the tab 101 .

[0057] In order to further ensure the effect of the avoidance groove 14 avoiding the pole ear 101 , in a possible embodiment, along the length direction of the dust removal box 01 , the width D1 of the avoidance groove 14 is greater than the length D2 of the pole ear 101 extending out of the pole piece 100 .

[0058] See also Figure 4 , along the X direction, the width of the avoidance groove 14 is D1. Figure 1 , in the width direction of the pole piece 100 (i.e. Figure 1 The length D2 of the pole ear 101 extending out of the pole piece 100 is set as the X direction in ...

[0059] As mentioned above, the dust removal part 12 is set corresponding to the pole piece 100, and the avoidance groove 14 is set corresponding to the pole ear 101. The connection root of the pole ear 101 and the pole piece 100 may correspond to the slot position of the avoidance groove 14. In another embodiment, the connection between the groove side wall of the avoidance groove 14 and the dust removal part 12 forms an arc transition surface 18.

[0060] If the pole ear 101 has been warped to a certain extent during transportation or cutting, the root of the pole ear 101 has been bent and inevitably contacts the side wall of the avoidance groove 14, and the connection between the side wall of the avoidance groove 14 and the dust removal part 12 is set as an arc transition surface 18, which can prevent the root piece of the pole ear 101 from being scratched by the connection between the side wall of the avoidance groove 14 and the surface of the dust removal part 12.

[0061] like Figure 8 As shown, the second aspect of the embodiment of the present application further provides a cutting device 02, which includes: a support assembly 20, a first dust removal box 01a, a second dust removal box 01b and a cutting channel for cutting the pole piece 100. The first dust removal box 01a and the second dust removal box 01b are respectively the dust removal boxes 01 provided in any embodiment of the first aspect of the present application, and the first dust removal box 01a and the second dust removal box 01b are arranged on the support assembly 20. The first dust removal box 01a and the second dust removal box 01b are respectively located on both sides of the cutting channel, and the notches of the avoidance grooves 14 in the first dust removal box 01a and the second dust removal box 01b are arranged oppositely.

[0062] In this embodiment, the support assembly 20 is used to support the first dust removal box 01a and the second dust removal box 01b.

[0063] The cutting device 02 may also include a cutter assembly 23, which has the above-mentioned cutting channel. In order to remove dust generated by the cutter assembly 23 when cutting the pole piece 100, the first dust removal box 01a and the second dust removal box 01b are arranged at the downstream position of the cutter assembly 23, that is, before the cut pole piece 100 enters the feed roller 300, at least two dust removal boxes 01 can clean the dust generated by cutting to remove tiny particles adsorbed on the surface of the pole piece 100, and improving the cleanliness of the pole piece 100 can ensure that the battery cell has good performance.

[0064] The first dust removal box 01a and the second dust removal box 01b are respectively located on both sides of the cutting channel, that is, the pole piece 100 after cutting passes through the space between the two dust removal boxes 01. The notches of the avoidance grooves 14 provided on the first dust removal box 01a and the second dust removal box 01b correspond to the pole ears 101, and the notches of the two avoidance grooves 14 are arranged opposite to each other. In the process of the pole piece 100 passing through the two dust removal boxes 01, the pole ears 101 are located in the space enclosed by the two avoidance grooves 14, and the pole ears 101 and the first dust removal box 01a and the second dust removal box 01b can reduce the occurrence of scratches. Even if the pole ears 101 have been slightly warped before the pole piece 100 is cut, since the avoidance grooves 14 are provided on both sides of the pole ears 101, no matter in which direction the pole ears 101 are warped, the pole ears 101 can be reduced from further scratching with the dust removal box 01, thereby reducing further deformation of the pole ears 101.

[0065] In this way, the cutting device 02 provided in the embodiment of the present application can ensure that the pole ear 101 is less in contact with the dust removal box 01 during the cutting and movement process by setting an avoidance groove 14 on the dust removal box 01, so as to reduce the possibility of the pole ear 101 being scratched, thereby ensuring that the finally formed battery cell has good electrical performance.

[0066] In order to ensure that the avoidance groove 14 on the first dust removal box 01a corresponds to the pole lug 101, when installing the first dust removal box 01a, it is necessary to adjust the installation position of the first dust removal box 01a to ensure that the avoidance groove 14 corresponds to the pole lug 101. In another embodiment, the cutting device 02 also includes a first mounting member 21, the first mounting member 21 is arranged on the bracket assembly 20, and the first dust removal box 01a is arranged on the bracket assembly 20 through the first mounting member 21. The first dust removal box 01a can adjust the installation position through the first adjustment part 211 provided on the first mounting member 21, so that the avoidance groove 14 of the first dust removal box 01a corresponds to the pole lug 101 of the pole piece 100.

[0067] In this embodiment, if Fig. 9 As shown, the cutting device 02 further includes a first mounting member 21, which is constructed as a bending structure, wherein one flange is fixedly disposed on the bracket assembly 20, and the other flange is connected to the first dust removal box 01a.

[0068] A first adjusting portion 211 is provided on the other flange of the first mounting member 21, and the first dust removal box 01a is connected to the first mounting member 21 via the first adjusting portion 211. The first dust removal box 01a can adjust its installation position along its length direction via the first adjusting portion 211, and when the avoidance groove 14 of the first dust removal box 01a corresponds to the pole ear 101, the first dust removal box 01a is fastened to the first mounting member 21.

[0069] Optionally, the first adjustment portion 211 may be a waist-shaped hole extending along the length direction (first direction) of the first dust removal box 01a, and the first fastener passes through the first adjustment portion 211 to pre-position the first dust removal box 01a to the first mounting member 21. When the avoidance groove 14 on the first dust removal box 01a corresponds to the pole ear 101, the first fastener fastens the first dust removal box 01a to the first mounting member 21.

[0070] In order to facilitate the installation of the avoidance groove 14 on the second dust removal box 01b corresponding to the pole ear 101, in another embodiment, the cutting device 02 also includes a second mounting member 22, and the second mounting member 22 is arranged on the bracket assembly 20. The second dust removal box 01b is arranged on the bracket assembly 20 through the second mounting member 22. The second dust removal box 01b can adjust the installation position through the second adjustment part 221 on the second mounting member 22 so that the avoidance groove 14 of the second dust removal box 01b corresponds to the pole ear 101.

[0071] In this embodiment, if Fig.10 and Fig.12 As shown, the cutting device 02 further includes a second mounting member 22 , which is constructed as a bending structure, wherein one flange is fixedly disposed on the bracket assembly 20 , and the other flange is connected to the second dust removal portion 12 .

[0072] The other flange of the second mounting member 22 is provided with a second adjustment portion 221, and the second dust removal box 01b is connected to the second mounting member 22 via the second adjustment portion 221. When installing the second dust removal box 01b, it is necessary to adjust the installation position of the second dust removal box 01b to ensure that the avoidance groove 14 is aligned with the pole lug 101. The second dust removal box 01b can be adjusted and fixed to the installation position of the bracket assembly 20 in the length direction of the second dust removal box 01b via the second adjustment portion 221, and when the avoidance groove 14 of the second dust removal box 01b corresponds to the pole lug 101, the second dust removal box 01b is fastened to the second mounting member 22.

[0073] Optionally, the second adjustment portion 221 may be a waist-shaped hole extending along the length direction (first direction) of the second dust removal box 01b, and the second fastener passes through the waist-shaped hole to pre-position the second dust removal box 01b to the second mounting member 22. When the avoidance groove 14 on the second dust removal box 01b corresponds to the pole ear 101, the second fastener fastens the second dust removal box 01b to the second mounting member 22.

[0074] In another embodiment, the support assembly 20 includes a support 201 and a knife seat 202 that can be controlled to move relative to the support 201, and the cutting device 02 includes a first cutter 231 and a second cutter 232. The first cutter 231 is arranged on the support 201, and the second cutter 232 is arranged on the knife seat 202. The second cutter 232 can be driven by the knife seat 202 to approach or move away from the first cutter 231; the first mounting member 21 is arranged on the support 201, and the second mounting member 22 is arranged on the knife seat 202. The second dust removal box 01b is driven by the knife seat 202 to approach or move away from the first dust removal box 01a.

[0075] like Fig.11 As shown, the support assembly 20 includes a support 201, which is constructed as a frame structure with a mounting groove. The support assembly 20 also includes a knife seat 202 movably arranged in the mounting groove of the support 201, and the knife seat 202 can move in the mounting groove.

[0076] like Figure 8 and Fig. 9 As shown, the knife seat 202 is connected to the bracket 201 through a driving device 24. The driving device 24 is arranged on the bracket 201. The driving output end of the driving device 24 is connected to the knife seat 202. The driving device 24 can drive the knife seat 202 to reciprocate in the mounting groove in a controlled manner. A first guide rod 25 extending along the Z direction is also arranged outside the mounting groove of the bracket 201. At least part of the first guide rod 25 passes through the bracket 201 and extends into the knife seat 202 to provide guidance for the knife seat 202 during the movement, so that the knife seat 202 always moves along the Z direction. Figure 8 Reciprocating motion in the Z direction.

[0077] like Figure 8 and Fig.10 As shown, the cutter assembly 23 includes a first cutter 231 fixedly disposed on the bracket 201 and a second cutter 232 disposed on the cutter seat 202. The first cutter 231 and the second cutter 232 are arranged at Figure 8 The first cutter 231 and the second cutter 232 are arranged correspondingly in the Z direction, and the above-mentioned cutting channel is formed between the first cutter 231 and the second cutter 232 for the pole piece 100 to pass through. The second cutter 232 can be driven by the cutter holder 202 to approach or move away from the first cutter 231 to complete the cutting operation.

[0078] When the cutting device 02 needs to cut the electrode piece 100, the second cutter 232 can be driven by the cutter holder 202 to approach the first cutter 231 and abut against the electrode material strip, and the second cutter 232 and the first cutter 231 can jointly complete the cutting of the electrode piece 100. After cutting, the second cutter 232 can be driven by the cutter holder 202 to move in a direction away from the first cutter 231 to loosen the electrode piece 100 so that the electrode piece 100 enters the feeding roller 300, and prepare to cut the newly entered electrode piece 100.

[0079] like Figure 8 As shown, the first dust box 01a and the second dust box 01b are respectively located on both sides of the cutting channel. The first dust box 01a is fixedly arranged relative to the bracket 201 through the first mounting member 21 and is located in the downstream direction of the first cutter 231. The second dust box 01b is arranged on the knife holder 202 through the second mounting member 22 and is located in the downstream direction of the second cutter 232. The second dust box 01b can move with the knife holder 202, that is, the second dust box 01b can move synchronously with the second cutter 232. When the second cutter 232 moves with the knife holder 202 to approach the first cutter 231, the second dust box 01b also moves synchronously with the knife holder 202 to approach the first dust box 01a. In this way, it can be ensured that when cutting the pole piece 100, both the first dust box 01a and the second dust box 01b can be closer to the pole piece 100, thereby achieving an efficient cleaning effect.

[0080] Further, when the second cutter 232 is located at the cutting position, the first distance L1 between the first dust removal box 01a and the second dust removal box 01b is greater than the second distance L2 between the first cutter 231 and the second cutter 232 .

[0081] Since the second cutter 232 can move with the cutter holder 202, the second cutter 232 has a cutting position and a ready-to-cut position. When the second cutter 232 is in the cutting position, the second cutter 232 and the first cutter 231 cut the electrode strip together. After completing the cutting of the electrode sheet 100, the second cutter 232 moves in a direction away from the first cutter 231 and returns to the ready-to-cut position.

[0082] When the second cutter 232 is located at the cutting position, the first cutter 231 and the second cutter 232 cut the pole piece 100 , and the first distance L1 between the first cutter 231 and the second cutter 232 is the thickness of the pole piece 100 .

[0083] like Figure 8 and Fig.10As shown, the first dust box 01a and the second dust box 01b are respectively located in the downstream direction of the first cutter 231 and the second cutter 232. When the second cutter 232 is in the cutting position, the first dust box 01a faces the surface of the second dust box 01b, which is farther away from the pole piece 100 than the first cutter 231. At the same time, the second dust box 01b faces the surface of the first dust box 01a, which is farther away from the pole piece 100 or the cutting channel than the second cutter 232. In this way, when the first cutter 231 and the second cutter 232 are cutting the pole piece 100, the first distance L1 (along the distance L2) between the first dust box 01a and the second dust box 01b is Figure 8 in the Z direction) is greater than the second distance L2 between the first cutting knife 231 and the second cutting knife 232.

[0084] In this way, when the first cutter 231 and the second cutter 232 are cutting the pole piece 100, the first dust removal box 01a and the second dust removal box 01b can be closer to the pole piece 100 but will not touch the pole piece 100, thereby reducing the situation where the first dust removal box 01a and the second dust removal box 01b scratch the pole piece 100, protecting the pole piece 100 while ensuring the dust removal effect of the first dust removal box 01a and the second dust removal box 01b.

[0085] It can be understood that since the second dust box 01b moves synchronously with the second cutter 232, when the second cutter 232 retreats to the cutting position, the first distance L1 between the first dust box 01a and the second dust box 01b is also maintained at a state greater than the second distance L2 between the first cutter 231 and the second cutter 232, that is, the distance between the first dust box 01a and the second dust box 01b is greater than the channel width of the cutting channel, so as to reduce the first dust box 01a and the second dust box 01b from scratching the pole piece 100 during the movement of the pole piece 100 in the downstream direction.

[0086] In another embodiment, the cutting device 02 further includes: an abutment member 27 , which is disposed on the knife seat 202 through an elastic component 26 , and the abutment member 27 can press the pole piece 100 under the drive of the knife seat 202 .

[0087] In this embodiment, the abutment member 27 is disposed on the knife seat 202 through the elastic component 26, and the elastic component 26 includes an elastic member 261 and a second guide rod 262, one end of the second guide rod 262 at least partially penetrates the knife seat 202, and the other end of the second guide rod 262 is connected to the abutment member 27. The elastic member 261 is sleeved on the second guide member, one end of the elastic member 261 abuts against the knife seat 202, and the other end abuts against the abutment member 27.

[0088] The second cutter 232 can be located in the downstream direction of the abutment member 27, and the free end of the abutment member 27 is closer to the first cutter 231 than the second cutter 232. When the abutment member 27 moves with the knife holder 202 toward the direction of the first cutter 231, the abutment member 27 abuts against the electrode material strip before the second cutter 232. After the abutment member 27 abuts against the electrode material strip, the knife holder 202 continues to move and drives the second cutter 232 to move to the cutting position. At this time, the elastic force generated by the compression of the elastic member 261 can make the abutment member 27 press the pole piece 100, so that the pole piece 100 can remain fixed when cutting the pole piece 100, which is conducive to the second cutter 232 and the first cutter 231 to complete the cutting operation smoothly.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A dust removal box (01), characterized in that: The dust removal box (01) comprises: A box body (10), wherein a cavity (11) is formed in the box body (10), the box body (10) extends along a first direction, the box body (10) comprises a dust removal portion (12) extending along the first direction, and the dust removal portion (12) is formed with a plurality of dust removal holes (13) communicating with the cavity (11); An avoidance groove (14) is formed on the box body (10) and avoids the dust removal portion (12); the avoidance groove (14) and the dust removal portion (12) are located on the same side of the box body.

2. The dust removal box (01) according to claim 1, characterized in that: The number of the avoidance grooves (14) is two, the two avoidance grooves (14) are arranged at intervals along the first direction, and the dust removal portion (12) is located between the two avoidance grooves (14).

3. The dust removal box (01) according to claim 1, characterized in that: The box body (10) comprises a first surface (15) and a second surface (16) which are opposite to each other along a second direction, the second direction is perpendicular to the first direction, and the avoidance groove (14) passes through the first surface (15) and the second surface (16) respectively.

4. The dust removal box (01) according to claim 3, characterized in that: A first arc transition portion (17) is formed at the connection between the avoidance groove (14) and the first surface (15); and / or A second arc transition portion is formed at the connection between the avoidance groove (14) and the second surface (16).

5. The dust removal box (01) according to claim 1, characterized in that: The dust removal box is used for removing dust from a pole piece provided with a pole ear, and along the first direction, the width D1 of the avoidance groove (14) is greater than the length D2 of the pole ear extending from the pole piece.

6. The dust removal box (01) according to claim 1, characterized in that: A circular arc transition surface (18) is formed at the connection between the groove side wall of the avoidance groove (14) and the dust removal portion (12).

7. A cutting device (02), characterized in that: The cutting device (02) comprises a cutting channel for cutting the pole piece, and the cutting device (02) comprises: A support assembly (20); a first dust removal box (01a) and a second dust removal box (01b), wherein the first dust removal box (01a) and the second dust removal box (01b) are respectively the dust removal boxes (01) according to any one of claims 1 to 6, and the first dust removal box (01a) and the second dust removal box (01b) are arranged on the bracket assembly (20); The first dust removal box (01a) and the second dust removal box (01b) are respectively located on both sides of the cutting channel, and the notches of the avoidance grooves (14) in the first dust removal box (01a) and the second dust removal box (01b) are arranged relative to each other.

8. The cutting device (02) according to claim 7, characterized in that The cutting device (02) further comprises: A first mounting member (21), wherein the first mounting member (21) is arranged on the bracket assembly (20), and the first dust removal box (01a) is arranged on the bracket assembly (20) through the first mounting member (21); The first dust removal box (01a) can adjust the installation position through a first adjustment portion (211) provided on the first installation member (21).

9. The cutting device (02) according to claim 8, characterized in that The first adjustment portion (211) is a waist-shaped hole, the waist-shaped hole extends along a first direction of the first dust removal box (01a), and the first dust removal box (01a) is mounted to the first mounting member (21) via a first fastener.

10. The cutting device (02) according to claim 8, characterized in that The cutting device (02) further comprises: a second mounting member (22), wherein the second mounting member (22) is arranged on the bracket assembly (20), and the second dust removal box (01b) is arranged on the bracket assembly (20) via the second mounting member (22); The installation position of the second dust removal box (01b) can be adjusted via a second adjustment portion (221) provided on the second mounting member (22).

11. The cutting device (02) according to claim 10, characterized in that The second adjustment portion (221) is a waist-shaped hole, the waist-shaped hole extends along a first direction of the second dust removal box (01b), and the second dust removal box (01b) is mounted to the second mounting member (22) via a second fastener.

12. The cutting device (02) according to claim 10, characterized in that The support assembly (20) comprises a support (201) and a knife seat (202) which can be controlled to move relative to the support (201), and the cutting device (02) comprises: A first cutter (231), wherein the first cutter (231) is disposed on the bracket (201); A second cutter (232), wherein the second cutter (232) is disposed on the cutter seat (202), and the second cutter (232) can be driven by the cutter seat (202) to move closer to or farther from the first cutter (231); The first mounting member (21) is arranged on the bracket (201), the second mounting member (22) is arranged on the knife seat (202), and the second dust removal box (01b) is driven by the knife seat (202) to approach or move away from the first dust removal box (01a).

13. The cutting device (02) according to claim 12, characterized in that A first distance L1 between the first dust removal box (01a) and the second dust removal box (01b) is greater than a second distance L2 between the first cutter (231) and the second cutter (232).

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