Slotting mechanism and battery production device

Abstract

The present disclosure provides a slotting mechanism and a battery production device. The slotting mechanism comprises: a base; and a slotting assembly, the slotting assembly being movably arranged on the base in a first direction so as to approach or move away from a battery cell, and the slotting assembly being configured to perform radial slotting on an end surface of the battery cell. In the slotting mechanism of the present disclosure, the slotting assembly is arranged close to the battery cell in the first direction and performs radial slotting on the end surface of the battery cell, allowing a protruding structure on a current collecting disc to extend into a slot on the end surface of the battery cell for subsequent welding. The machined slot can accommodate the protruding structure of the current collecting disc, so that the current collecting disc can be directly welded to the end surface of the battery cell without the need for flattening, and metallic foreign matters generated during slotting can naturally fall without remaining on the end surface of the battery cell, thereby improving the welding quality.

Description

Grooving mechanism and battery production equipment

[0001] The present disclosure claims priority to the Chinese patent application No. 202421463504.2, filed on June 24, 2024, and entitled "Grooving mechanism and battery production equipment", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of battery production equipment, and more particularly, to a grooving mechanism and battery production equipment. BACKGROUND

[0003] In the production process of cylindrical batteries, before the current collector and the battery cell are welded, the tab at the end of the battery cell usually needs to be flattened to make the end face of the battery cell flat. However, metal foreign matter may be left on the end face of the battery cell during the flattening process, affecting the welding quality and thus the quality of the battery cell. SUMMARY

[0004] Therefore, it is necessary to provide a new technical solution for the grooving mechanism and battery production equipment to at least solve the problem that metal foreign matter is easily left on the flattened battery cell in the prior art.

[0005] According to a first aspect of the present disclosure, a grooving mechanism is provided, comprising: a base; a grooving assembly movably arranged on the base along a first direction to approach or move away from a battery cell, the grooving assembly being configured to groove the end face of the battery cell radially.

[0006] Optionally, the grooving assembly comprises: a mounting disc movably arranged on the base along the first direction; a grooving knife movably arranged on the mounting disc along the radial direction of the battery cell; and a first driving member connected with the grooving knife and driving the grooving knife.

[0007] Optionally, the number of the grooving knives is multiple, and the multiple grooving knives are arranged along the circumferential direction of the mounting disc.

[0008] Optionally, the grooving knife comprises: a connecting block connected with the mounting disc; and a knife head, one end of which is connected with the connecting block, and the other end of which is formed into a blade edge, and the distance between the knife head and the side of the mounting disc facing the knife head gradually increases in the direction from the outside to the inside of the mounting disc.

[0009] Optionally, the blade edge extends along a straight line, and two ends of the blade edge are respectively provided with arc-shaped notches.

[0010] Optionally, the grooving assembly further comprises a speed regulating valve arranged on the first driving member for regulating the speed of the grooving knife.

[0011] Optionally, the device further comprises a pressure adjusting assembly connected with the slotting assembly, for adjusting the pressure between the slotting assembly and the end face of the battery cell.

[0012] Optionally, the device further comprises a dust collecting assembly arranged on the base, the dust collecting assembly defining a dust collecting cavity and an inlet communicating with the dust collecting cavity, the inlet being capable of generating a negative pressure to suck the foreign matter generated by the slotting into the dust collecting cavity.

[0013] Optionally, the slotting assembly is movable between a first state and a second state, when the slotting assembly is in the first state, the slotting assembly is in contact with the end face of the battery cell and slots the end face of the battery cell radially, at least a part of the projection of the slotting assembly on a horizontal plane overlaps the projection of the inlet on the horizontal plane; when the slotting assembly is in the second state, the slotting assembly is spaced apart from the battery cell, and the projection of the slotting assembly on the horizontal plane is staggered with the projection of the inlet on the horizontal plane.

[0014] Optionally, the dust collecting assembly comprises a dust collecting box having the dust collecting cavity, the dust collecting box being provided with the inlet and an outlet, the inlet being located below the slotting assembly to collect the foreign matter; and a vacuumizing member communicating with the outlet to vacuumize the dust collecting cavity.

[0015] Optionally, the inlet and the outlet are arranged spaced apart in a second direction, the second direction being perpendicular to the first direction.

[0016] Optionally, the dust collecting box and the inlet respectively extend along the second direction.

[0017] Optionally, the dust collecting cavity comprises a first channel, a second channel and a third channel communicating in sequence, the first channel and the second channel respectively extend along a third direction, the third channel extends along the second direction, the third direction being perpendicular to the first direction and the second direction, one end of the first channel away from the second channel is formed as the inlet, in the direction of the first channel towards the second channel, the cross-sectional area of the first channel gradually decreases, one end of the third channel away from the second channel is formed as an outlet.

[0018] Optionally, the dust collecting assembly further comprises a connecting member arranged on the side of the dust collecting box away from the battery cell, the connecting member is provided with a dust collecting channel extending along the first direction, one end of the dust collecting channel communicates with the outlet, the other end of the dust collecting channel communicates with the vacuumizing member.

[0019] Optionally, the groove forming mechanism further comprises a positioning assembly arranged on the groove forming assembly, the positioning assembly being configured to position the jig.

[0020] Optionally, the positioning assembly comprises at least two positioning pins configured to cooperate with positioning holes on the jig to position the jig.

[0021] Optionally, the groove forming mechanism further comprises a guide arranged on the base and extending along the first direction, the groove forming assembly being connected to the guide and movable along the guide; and a second driving member arranged on the base and connected to the groove forming assembly to drive the groove forming assembly to move along the first direction.

[0022] According to a second aspect of the present disclosure, there is provided a battery production device comprising the groove forming mechanism as described in any of the above embodiments.

[0023] Optionally, the battery production device has a groove forming station, the groove forming mechanism being arranged at the groove forming station, the battery production device further comprising a jig configured to hold the battery cell, and a conveying mechanism configured to convey the jig to the groove forming station, a plurality of groove forming mechanisms being arranged on both sides of the conveying mechanism.

[0024] According to the groove forming mechanism of the present disclosure, the groove forming assembly is arranged to approach the battery cell along the first direction and form a radial groove on the end face of the battery cell, facilitating the protruding structure on the current collector plate to extend into the groove on the end face of the battery cell for welding. The groove formed can accommodate the protruding structure of the current collector plate, so that the current collector plate can be directly welded with the end face of the battery cell without need of flattening. Moreover, the metal foreign matter generated by the groove forming can naturally fall off and will not remain on the end face of the battery cell, improving the welding quality.

[0025] Other features of the present disclosure, and the advantages thereof over the existing art, will become apparent from the following detailed description of illustrative embodiments thereof, which description shall be read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0027] FIG. 1 is a front view of a battery production device according to one embodiment provided by the present disclosure;

[0028] FIG. 2 is a top view of a battery production device according to one embodiment provided by the present disclosure;

[0029] FIG. 3 is a perspective view of a groove forming mechanism and a jig in a battery production device according to one embodiment provided by the present disclosure;

[0030] Fig. 4 is a perspective view of a trenching mechanism according to one embodiment provided by the present disclosure;

[0031] Fig. 5 is a side view of a trenching mechanism according to one embodiment provided by the present disclosure;

[0032] Fig. 6 is a perspective view of a trenching blade in a trenching mechanism according to one embodiment provided by the present disclosure;

[0033] Fig. 7 is an enlarged view of the portion circled at A in Fig. 6;

[0034] Fig. 8 is a side view of a trenching blade in a trenching mechanism according to one embodiment provided by the present disclosure;

[0035] Fig. 9 is a perspective view of a dust collecting box and a connecting piece in a trenching mechanism according to one embodiment provided by the present disclosure;

[0036] Fig. 10 is a top view of a dust collecting box and a connecting piece in a trenching mechanism according to one embodiment provided by the present disclosure;

[0037] Fig. 11 is a sectional view along line B-B in Fig. 10.

[0038] Fig. 11 is a sectional view along line B-B in Fig. 10. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. If it is considered that the relative arrangement, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the disclosure and its applications or uses.

[0041] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0042] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0043] It should be noted that like reference numerals and letters refer to like items throughout the attached drawings, and as a result, once an item is defined in one drawing, it is not necessary to discuss it further in subsequent drawings.

[0044] The trenching mechanism 100 according to the embodiments of the present disclosure will be described in detail below in combination with the drawings.

[0045] As shown in FIGS. 1-11, the trenching mechanism 100 according to the embodiments of the present disclosure includes a base 10, a trenching assembly 20, and a dust collection assembly 30.

[0046] Specifically, the trenching assembly 20 is movably arranged on the base 10 in a first direction to approach or move away from the battery cell 400, and the trenching assembly 20 is configured to radially trench the end face of the battery cell 400.

[0047] In other words, the trenching mechanism 100 according to the embodiments of the present disclosure mainly consists of the base 10, the trenching assembly 20, and the dust collection assembly 30, and the trenching assembly 20 can be installed on the base 10.

[0048] The trenching assembly 20 can approach or move away from the battery cell 400 in the first direction and trench the end face of the battery cell 400. The battery cell 400 can be fixed in the jig 200 to avoid changes in the pose of the battery during trenching.

[0049] It should be noted that the battery cell 400 is mainly wound by the pole piece and the diaphragm, and the uncoated portions of the pole piece at both ends in the width direction of the pole piece can be formed into the tab. In the conventional technology, the tab at the end of the battery cell 400 needs to be flattened before being welded with the current collector, which is easy to produce metal foreign matter residues.

[0050] The trenching assembly 20 of the present embodiment can radially trench the end face of the battery cell 400, and the trenching mode includes but is not limited to cutting, rotating, and impacting to form a groove extending along the radial direction of the battery cell 400 on the tab structure at the end of the battery cell 400. The number of grooves can be one or more, which is not limited herein. The current collector can be provided with a protruding structure, which can be inserted into the groove in the end face of the battery cell 400, and then the current collector and the battery cell 400 are directly welded, eliminating the flattening process.

[0051] The trenching assembly 20 trenching will produce metal foreign matter, which can fall by itself under the action of gravity and will not be left on the end face of the battery cell 400, thereby facilitating the improvement of the welding quality.

[0052] Therefore, according to the groove digging mechanism 100 of the embodiments of the present disclosure, the groove digging assembly 20 is arranged to approach the electrode 400 along the first direction and radially groove the end face of the electrode 400, so that the protruding structure on the current collector plate can extend into the groove of the end face of the electrode 400 and then be welded, the groove processed can accommodate the protruding structure of the current collector plate, so that the current collector plate can be directly welded with the end face of the electrode 400 without need of flattening, and the metal foreign matter generated by the groove digging can naturally fall off without remaining on the end face of the electrode 400, thereby improving the welding quality.

[0053] In some embodiments of the present disclosure, the groove digging assembly 20 comprises a mounting disc 21, a digging blade 22 and a first driving member 23. The mounting disc 21 is movably arranged on the base 10 along the first direction. The digging blade 22 is movably arranged on the mounting disc 21 along the radial direction of the electrode 400. The first driving member 23 is connected with the digging blade 22 and drives the digging blade 22.

[0054] In other words, the groove digging assembly 20 can mainly comprise the mounting disc 21, the digging blade 22 and the first driving member 23. The mounting disc 21 can be connected with the base 10 and move relative to the base 10 along the first direction. The digging blade 22 can be connected with the mounting disc 21 and move along the radial direction of the mounting disc 21 under the driving of the first driving member 23.

[0055] During the groove digging, the mounting disc 21 can be coaxial with the electrode 400, and the digging blade 22 can groove the end face of the electrode 400 when moving along the radial direction of the mounting disc 21. It should be noted that the digging blade 22 can groove from inside to outside or from outside to inside, which is not limited herein.

[0056] Optionally, the first driving member 23 can comprise but is not limited to a claw-shaped pneumatic cylinder or an electric cylinder.

[0057] According to some optional embodiments of the present disclosure, the number of the digging blades 22 is multiple, and the multiple digging blades 22 are arranged along the circumferential direction of the mounting disc 21, so that the groove digging mechanism 100 can groove multiple radially extending grooves on the end face of the electrode 400.

[0058] It should be noted that the number of the grooves on the end face of the electrode 400 can be set according to the specific structure of the current collector plate, and then the digging blades 22 can be added along the circumferential direction of the mounting disc 21.

[0059] As shown in FIG. 5, three digging blades 22 can be arranged along the circumferential direction of the mounting disc 21, and the three digging blades 22 can be centrally symmetrically distributed.

[0060] According to some other embodiments of the present disclosure, the digging knife 22 comprises a connecting block 221 and a knife head 222. The connecting block 221 is connected with the mounting disc 21. One end of the knife head 222 is connected with the connecting block 221, and the other end of the knife head 222 is formed as a knife edge 223. The distance between the knife head 222 and the side of the mounting disc 21 towards the knife head 222 gradually increases in the direction from the outside to the inside of the mounting disc 21.

[0061] Specifically, the digging knife 22 mainly comprises the connecting block 221 and the knife head 222. The connecting block 221 is movably arranged on the mounting disc 21 along the radial direction of the mounting disc 21. The end of the connecting block 221 close to the axis of the mounting disc 21 can be connected with one end of the knife head 222. The other end of the knife head 222 can be obliquely extended towards the axis of the mounting disc 21 and away from the side of the mounting disc 21. That is, an included angle can be formed between the knife head 222 and the connecting block 221, and the included angle can be an obtuse angle. Thus, the uniformity of the force on the digging knife 22 is facilitated, and the service life of the digging knife 22 is increased.

[0062] In addition, the end of the digging knife 22 away from the connecting block 221 can be provided with the knife edge 223. When the digging knife 22 moves along the radial direction of the mounting disc 21, the knife edge 223 can cut the end face of the battery cell 400 along the radial direction of the battery cell 400.

[0063] In some specific embodiments of the present disclosure, the knife edge 223 extends along a straight line, and the two ends of the knife edge 223 are respectively provided with arc-shaped close ends 224. Thus, the groove formed on the end face of the battery cell 400 by the digging knife 22 can be more regular, and the sharp corners of the groove are prevented from affecting the flattening of the battery cell 400, thereby affecting the quality of the battery cell 400.

[0064] According to some other embodiments of the present disclosure, the digging groove assembly 20 further comprises a speed regulating valve 24 arranged on the first driving member 23, which is used to adjust the speed of the digging knife 22. The speed regulating valve 24 can be used to control the force and speed of the digging groove, so as to meet different digging groove requirements.

[0065] In some specific embodiments of the present disclosure, the digging groove mechanism 100 further comprises a pressure adjusting assembly connected with the digging groove assembly 20, which is used to adjust the pressure between the digging groove assembly 20 and the end face of the battery cell 400. Before the digging groove is performed, the pressure adjusting assembly can be adjusted in advance, so as to ensure that the size of the digging groove force is consistent each time, which is beneficial to improve the quality of the digging groove.

[0066] Optionally, the pressure adjusting mechanism 40 can be connected with the digging groove assembly 20 through a guide rod.

[0067] According to some optional embodiments of the present disclosure, the grooving mechanism 100 further comprises a positioning assembly arranged on the grooving assembly 20, and the positioning assembly is configured to position the jig 200 of the battery cell 400. Therefore, the positioning assembly can move along with the grooving assembly 20 in the first direction, and during the process that the grooving assembly 20 approaches the jig 200 holding the battery cell 400, the positioning assembly also approaches the battery cell 400 and completes the positioning of the jig 200, which is beneficial to improve the positioning accuracy, for example, the positioning accuracy can be ensured to be 0.2mm.

[0068] According to one embodiment of the present disclosure, the dust collection assembly 30 is arranged on the base 10, and the dust collection assembly 30 defines a dust collection cavity 311 and an inlet 312 communicating with the dust collection cavity 311. The inlet 312 can generate a negative pressure to suck the foreign matters generated by the grooving into the dust collection cavity 311.

[0069] Specifically, the dust collection assembly 30 can be installed on the base 10. The grooving assembly 20 can generate metal foreign matters during the process of grooving the end face of the battery cell 400. Since the inlet 312 is under negative pressure, the metal foreign matters generated by the grooving can be sucked into the dust collection cavity 311 through the inlet 312, and then be collected and processed uniformly through the dust collection cavity 311.

[0070] In the present embodiment, the dust collection assembly 30 is arranged in the grooving mechanism 100, which can use the negative pressure to suck and remove the metal foreign matters generated by the cutting during the grooving, so as to avoid affecting the quality of the battery cell 400.

[0071] According to some optional embodiments of the present disclosure, the grooving assembly 20 is movable between a first state and a second state.

[0072] When the grooving assembly 20 is in the first state, the grooving assembly 20 is in contact with the end face of the battery cell 400 and grooves the end face of the battery cell 400 radially, and at least a part of the orthogonal projection of the grooving assembly 20 on a horizontal plane coincides with the orthogonal projection of the inlet 312 on the horizontal plane. When the grooving assembly 20 is in the second state, the grooving assembly 20 is spaced apart from the battery cell 400, and the orthogonal projection of the grooving assembly 20 on the horizontal plane is staggered with the orthogonal projection of the inlet 312 on the horizontal plane.

[0073] Specifically, the first state can be a grooving state, and the second state can be a standby state. The inlet 312 can be located below the end face of the battery cell 400 to receive the metal foreign matters generated by the grooving.

[0074] When the grooving assembly 20 is in the first state, the cutting knife 22 can act on the end face of the battery cell 400, and then the first driving member 23 drives the cutting knife 22 to move along the radial direction of the battery cell 400 to groove the end face of the battery cell 400 in the radial direction. A horizontal plane can be defined as a projection plane, and the projection of the cutting edge 223 of the cutting knife 22 on the horizontal plane can coincide with the projection of the inlet 312 on the horizontal plane, that is, the inlet 312 can be located directly below the cutting edge 223, so that the metal foreign matter generated by the grooving falls naturally to the inlet 312, facilitating the adsorption and collection of the metal foreign matter.

[0075] When the grooving assembly 20 is in the second state, the cutting knife 22 is spaced apart from the end face of the battery cell 400, and since the dust collection box 31 is fixed on the base 10, the inlet 312 is still located below the end of the battery cell 400, so that the cutting knife 22 is spaced apart from the inlet 312 in the first direction.

[0076] According to one embodiment of the present disclosure, the dust collection assembly 30 includes a dust collection box 31 and a vacuumizing member. The dust collection box 31 has a dust collection cavity 311, and the dust collection box 31 is provided with an inlet 312 and an outlet 313, the inlet 312 is located below the grooving assembly 20 to collect foreign matter. The vacuumizing member is in communication with the outlet 313 to vacuumize the dust collection cavity 311.

[0077] Specifically, the inlet 312 of the dust collection box 31 can be located below the grooving assembly 20, and when the grooving assembly 20 grooves, the metal foreign matter can fall into the dust collection cavity 311 through the inlet 312 under the action of gravity, which is conducive to improving the dust collection effect. The vacuumizing member is arranged in communication with the dust collection cavity 311 through the outlet 313, so that a negative pressure is formed in the dust collection cavity 311 and at the inlet 312, thereby adsorbing the metal foreign matter.

[0078] According to some other embodiments of the present disclosure, the inlet 312 and the outlet 313 are arranged to be spaced apart in the second direction, and the second direction is perpendicular to the first direction.

[0079] Specifically, when grooving, the axis of the battery cell 400 can extend along the first direction, and the grooving assembly 20 needs to move along the first direction, so that a space needs to be reserved in the axial direction of the battery cell 400 for the movement of the grooving assembly 20. Since the first direction is perpendicular to the second direction, the second direction can be the radial direction of the battery cell 400.

[0080] In order to ensure the dust collection effect, the inlet 312 can be arranged below the end of the battery cell 400. Therefore, arranging the inlet 312 and the outlet 313 to be spaced apart in the second direction can arrange the connecting structure between the outlet 313 and the vacuumizing member on the side of the grooving assembly 20, thereby facilitating the movement of the grooving assembly 20 along the first direction.

[0081] In some embodiments of the present disclosure, the dust collection box 31 and the inlet 312 extend along the second direction respectively, that is, the dust collection box 31 can extend along the radial direction of the battery cell 400 to increase the space of the dust collection cavity 311, and the inlet 312 extends along the radial direction of the battery cell 400, so that the metal foreign matter generated by the radial sloting can all fall into the inlet 312, thereby improving the dust collection effect.

[0082] According to some optional embodiments of the present disclosure, the dust collection cavity 311 comprises a first channel 314, a second channel 315 and a third channel 316 which are sequentially communicated, the first channel 314 and the second channel 315 extend along the third direction respectively, the third channel 316 extends along the second direction, the third direction is perpendicular to the first direction and the second direction respectively, one end of the first channel 314 away from the second channel 315 is formed into the inlet 312, in the direction of the first channel 314 towards the second channel 315, the cross-sectional area of the first channel 314 gradually decreases, and one end of the third channel 316 away from the second channel 315 is formed into the outlet 313.

[0083] In other words, as shown in FIG. 11, the dust collection cavity 311 can mainly consist of the first channel 314, the second channel 315 and the third channel 316. Optionally, the first direction and the second direction are mutually perpendicular horizontal directions, and the third direction is a vertical direction.

[0084] The first channel 314 and the second channel 315 both extend along the vertical direction, and the third channel 316 extends along the horizontal direction. The top end of the first channel 314 is open to form the inlet 312. The opening can be substantially rectangular. The bottom end of the first channel 314 can be communicated with the top end of the second channel 315, in the direction from top to bottom, the cross-sectional area of the first channel 314 gradually decreases, thereby forming an inclined inner wall surface to guide the metal foreign matter to fall into the second channel 315, and the inclined inner wall surface can enhance the dust collection effect. One end of the third channel 316 in the horizontal direction can be communicated with the second channel 315, and one end of the third channel 316 away from the second channel 315 can be formed into the outlet 313.

[0085] Thus, the first channel 314, the second channel 315 and the third channel 316 cooperatively form the L-shaped dust collection cavity 311, which can effectively collect and accommodate the metal foreign matter, and the metal foreign matter is not easy to scatter in the cavity, thereby avoiding the foreign matter flying, and also facilitating the cleaning of the dust collection cavity 311.

[0086] According to some other embodiments of the present disclosure, the dust collection assembly 30 further comprises a connecting piece 32, which is arranged at the side of the dust collection box 31 away from the battery cell 400, and the connecting piece 32 is internally provided with a dust collection channel 321 extending along the first direction, one end of the dust collection channel 321 is communicated with the outlet 313, and the other end of the dust collection channel 321 is communicated with a vacuumizing piece.

[0087] As shown in FIGS. 9-11, the outlet 313 of the dust collection box 31 is provided with a connecting piece 32. Optionally, the connecting piece 32 and the dust collection box 31 can be an integral piece. The dust collection channel 321 in the connecting piece 32 can extend in the first direction towards the side away from the battery cell 400, and the end of the dust collection channel 321 away from the dust collection box 31 can be communicated with the vacuumizing member through a pipe.

[0088] In the present embodiment, the provision of the connecting piece 32 on the dust collection box 31 can facilitate the communication of the dust collection box 31 with the vacuumizing member through the pipe, which can be sleeved on the outer surface of the connecting piece 32.

[0089] Optionally, the connecting piece 32 can be in a cylindrical shape.

[0090] According to some other embodiments of the present disclosure, the positioning assembly includes at least two positioning pins 51 for cooperating with the positioning holes 201 on the jig 200 to position the jig 200.

[0091] Specifically, the jig 200 can be provided with a plurality of positioning holes 201, and the axes of the positioning holes 201 can extend in the first direction. The number of the positioning holes 201 can be the same as the number of the positioning pins 51 in the positioning assembly, and the plurality of positioning holes 201 and the plurality of positioning pins 51 can correspond one-to-one.

[0092] When the grooving assembly 20 approaches the jig 200 in the first direction, the plurality of positioning pins 51 can be inserted into the positioning holes 201 to complete the positioning of the jig 200, and the battery cell 400 can be clamped by the jig 200. Thus, the battery cell 400 can be positioned by the positioning pins 51, which is conducive to improving the accuracy of grooving.

[0093] In some specific embodiments of the present disclosure, the grooving mechanism 100 further includes a guide 60 and a second driving member 70. The guide 60 is provided on the base 10 and extends in the first direction, and the grooving assembly 20 is connected with the guide 60 and movable along the guide 60. The second driving member 70 is provided on the base 10, and the second driving member 70 is connected with the grooving assembly 20 to drive the grooving assembly 20 to move in the first direction. Thus, the second driving member 70 can ensure that each battery cell 400 has a predetermined grooving depth.

[0094] Specifically, the base 10 is provided with the guide 60 extending in the first direction. Optionally, the guide 60 can be a linear rail, and the grooving assembly 20 can be connected with a sliding block. The second driving member 70 can be connected with the sliding block and drive the sliding block to slide along the linear rail. The second driving member 70 can include but is not limited to an electric cylinder.

[0095] The battery production equipment according to the embodiments of the present disclosure also has the corresponding technical effects of the groove digging mechanism 100, that is, metal foreign matters can be avoided in the subsequent rubbing process, the welding quality between the current collector plate and the tab can be improved, and the metal foreign matters generated in the groove digging process can be adsorbed and removed by the negative pressure, so that the quality of the battery cell 400 is not affected.

[0096] According to some other embodiments of the present disclosure, the battery production equipment has a groove digging station a, the groove digging mechanism 100 is arranged at the groove digging station a, and the battery production equipment further comprises a jig 200 and a conveying mechanism. The jig 200 is used for clamping the battery cell 400. The conveying mechanism is used for conveying the jig 200 to the groove digging station a, and a plurality of groove digging mechanisms 100 are arranged on both sides of the conveying mechanism.

[0097] As shown in FIG. 2, a plurality of groove digging mechanisms 100 can be arranged on both sides of the conveying mechanism, and the plurality of groove digging mechanisms 100 can be arranged in sequence along the conveying direction of the conveying mechanism, so that the two ends of the battery cell 400 are simultaneously subjected to groove digging. The arrangement of the conveying mechanism, the jig 200 and the groove digging mechanism 100 can realize automatic groove digging, which is beneficial to improving the production efficiency.

[0098] The process of groove digging of the battery cell 400 in the present embodiment will be described in detail below.

[0099] The conveying mechanism conveys the jig 200 with the battery cell 400 to the groove digging station a, and then the positioning pin 51 in the groove digging mechanism 100 is inserted into the positioning hole 201 of the jig 200 to complete the positioning of the jig 200. The groove digging pressure is adjusted in advance by the pressure adjusting assembly to ensure that the end face pressing force is consistent. The second driving member 70 drives the groove digging assembly 20 to approach the battery cell 400, and makes the groove cutter 22 act on the end face of the battery cell 400. The air claw air cylinder as the first driving member 23 is opened, so that the groove cutter 22 moves outward along the radial direction of the battery cell 400, and the groove digging force and the groove digging speed can be adjusted by the pressure regulating valve. The cutting chips generated in the groove digging process are adjusted into the dust collection cavity 311 through the inlet 312, and are collected and transported out through the outlet 313 and the dust collection channel 321 under the negative pressure.

[0100] Although some specific embodiments of the present disclosure have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A trenching mechanism characterized by, The application relates to a battery cell slotting device. The device comprises: a base; 2. The trenching mechanism of claim 1, wherein, a slotting assembly movably arranged on the base along a first direction to approach or move away from a battery cell, and configured to slot the end surface of the battery cell radially. The slotting assembly comprises: a mounting disc movably arranged on the base along the first direction; a slotting cutter movably arranged on the mounting disc along the radial direction of the battery cell; 3. The trenching mechanism of claim 2, wherein, a first driving member connected with the slotting cutter and driving the slotting cutter.

4. A trenching mechanism according to claim 2 or 3, wherein, The slotting cutter is in plurality, and the plurality of slotting cutters are arranged along the circumferential direction of the mounting disc. The slotting cutter comprises: a connecting block connected with the mounting disc; 5. The trenching mechanism of claim 4, wherein, a cutter head, one end of which is connected with the connecting block, and the other end of which is formed into a cutter edge, and the distance between the cutter head and the side of the mounting disc facing the cutter head gradually increases in the direction from the outside to the inside of the mounting disc.

6. A trenching mechanism according to any one of claims 2 to 5, wherein, The cutter edge extends along a straight line, and two ends of the cutter edge are respectively provided with arc-shaped closing portions. The slotting assembly further comprises:

7. A trenching mechanism according to any one of claims 1 to 6, wherein, a speed regulating valve arranged on the first driving member and used for regulating the speed of the slotting cutter. The device further comprises:

8. A trenching mechanism according to any one of claims 1 to 7, wherein, a pressure regulating assembly connected with the slotting assembly and used for regulating the pressure between the slotting assembly and the end surface of the battery cell. The device further comprises:

9. The trenching mechanism of claim 8, wherein, a dust collecting assembly arranged on the base, which defines a dust collecting cavity and an inlet communicating with the dust collecting cavity, and the inlet can generate negative pressure to suck foreign matters generated in the slotting into the dust collecting cavity. The slotting assembly is movable between a first state and a second state, when the slotting assembly is in the first state, the slotting assembly is in contact with the end surface of the battery cell and slots the end surface of the battery cell radially, and at least a part of the orthogonal projection of the slotting assembly on a horizontal plane coincides with the orthogonal projection of the inlet on the horizontal plane; 10. A trenching mechanism according to claim 8 or 9, characterised in that, when the slotting assembly is in the second state, the slotting assembly is spaced apart from the battery cell, and the orthogonal projection of the slotting assembly on the horizontal plane is staggered with the orthogonal projection of the inlet on the horizontal plane. The dust collecting assembly comprises: a dust collecting box having the dust collecting cavity, the dust collecting box being provided with the inlet and an outlet, and the inlet being located below the slotting assembly to collect the foreign matters; 11. The trenching mechanism of claim 10, wherein, a vacuumizing member communicating with the outlet to vacuumize the dust collecting cavity.

12. The trenching mechanism of claim 11, wherein, The inlet and the outlet are arranged in a second direction perpendicular to the first direction.

13. A trenching mechanism according to claim 11 or 12, characterised in that, The dust collecting box and the inlet respectively extend along the second direction.

14. A trenching mechanism according to any one of claims 10 to 13, wherein, The dust collecting cavity comprises a first channel, a second channel and a third channel communicating in sequence, the first channel and the second channel respectively extend along a third direction, the third channel extends along the second direction, the third direction is perpendicular to the first direction and the second direction, one end of the first channel away from the second channel is formed into the inlet, the cross-sectional area of the first channel gradually decreases in the direction from the first channel to the second channel, and one end of the third channel away from the second channel is formed into an outlet. The dust collecting assembly further comprises: A connecting piece is arranged on the side of the dust collection box away from the battery cell, and a dust collection channel extending in the first direction is arranged in the connecting piece. One end of the dust collection channel is communicated with the outlet, and the other end of the dust collection channel is communicated with the vacuumizing piece.

15. A trenching mechanism according to any one of claims 1 to 14, wherein, Further comprising: A positioning assembly is arranged on the groove forming assembly, and the positioning assembly is used for positioning the jig of the battery cell.

16. The trenching mechanism of claim 15, wherein, The positioning assembly comprises: At least two positioning pins are used for cooperating with the positioning holes on the jig to position the jig.

17. A trenching mechanism according to any one of claims 1 to 16, wherein, Further comprising: A guide piece is arranged on the base and extends in the first direction. The groove forming assembly is connected with the guide piece and is movable along the guide piece. A second driving piece is arranged on the base. The second driving piece is connected with the groove forming assembly to drive the groove forming assembly to move in the first direction.

18. A battery production apparatus characterized by comprising: Comprise: The groove forming mechanism is the groove forming mechanism according to any one of claims 1-17.

19. The battery production apparatus according to claim 18, wherein The battery production equipment has a groove forming station. The groove forming mechanism is arranged on the groove forming station. The battery production equipment further comprises: A jig is used for clamping the battery cell. A conveying mechanism is used for conveying the jig to the groove forming station. A plurality of groove forming mechanisms are arranged on both sides of the conveying mechanism.

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