Grooving mechanism and battery production equipment

Abstract

The utility model provides a grooving mechanism and battery production equipment. The grooving mechanism comprises a base; the grooving assembly is movably arranged on the base in the first direction so as to be close to or far away from the battery cell, and the grooving assembly is configured to conduct radial grooving on the end face of the battery cell. According to the grooving mechanism disclosed by the utility model, the grooving assembly is arranged to be close to the battery cell along the first direction and is used for radially grooving the end surface of the battery cell, so that a convex structure on the current collecting plate can conveniently extend into a groove in the end surface of the battery cell and then is welded, and the machined groove can be used for accommodating the convex structure of the current collecting plate; the collector plate can be directly welded with the end face of the battery cell without rubbing, and metal foreign matters generated by slotting can naturally fall down without remaining on the end face of the battery cell, so that the welding quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, and more specifically, to a groove digging mechanism and battery production equipment. Background Art

[0002] In the production process of cylindrical batteries, before welding the collector plate and the battery cell, it is usually necessary to flatten the tabs at the ends of the battery cell to make the end faces of the battery cell smooth. However, during the flattening process, foreign metal matter will remain on the end faces of the battery cell, affecting the welding quality and thus the quality of the battery cell. Utility Model Content

[0003] The utility model provides a new technical solution for a groove digging mechanism, which can at least solve the problem in the prior art that metal foreign matter residues are easily generated when the battery core is flattened.

[0004] The utility model also provides a battery production device, comprising the above-mentioned groove digging mechanism.

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

[0006] Optionally, the grooving assembly includes: a mounting plate, which is movably disposed on the base along the first direction; a digging knife, which is movably disposed on the mounting plate along the radial direction of the battery cell; and a first driving member, which is connected to the digging knife and drives the digging knife.

[0007] Optionally, there are multiple digging knives, and the multiple digging knives are arranged along the circumference of the mounting plate.

[0008] Optionally, the digging tool includes: a connecting block, which is connected to the mounting plate; a cutter head, one end of which is connected to the connecting block, and the other end of which is formed as a blade, and in the direction from the outside to the inside of the mounting plate, the distance between the cutter head and a side surface of the mounting plate toward the cutter head gradually increases.

[0009] Optionally, the blade extends in a straight line, and arc-shaped closing edges are respectively provided at both ends of the blade.

[0010] Optionally, the trenching assembly further comprises: a speed regulating valve, which is arranged on the first driving member and is used to adjust the speed of the trenching cutter.

[0011] Optionally, it further includes: a pressure regulating component, which is connected to the grooving component and is used to adjust the pressure between the grooving component and the end face of the battery cell.

[0012] Optionally, it also includes: a dust collecting component, which is arranged on the base, and the dust collecting component defines a dust collecting chamber and an inlet connected to the dust collecting chamber, and the inlet can generate negative pressure to absorb foreign matter generated by the grooving into the dust collecting chamber.

[0013] Optionally, the groove assembly is movable between a first state and a second state. When the groove assembly is in the first state, the groove assembly contacts the end surface of the battery cell and radially grooves the end surface of the battery cell, and at least a portion of the orthographic projection of the groove assembly on the horizontal plane coincides with the orthographic projection of the inlet on the horizontal plane; when the groove assembly is in the second state, the groove assembly is spaced apart from the battery cell, and the orthographic projection of the groove assembly on the horizontal plane is staggered with the orthographic projection of the inlet on the horizontal plane.

[0014] Optionally, the dust collecting assembly includes: a dust collecting box, the dust collecting box having the dust collecting cavity, the dust collecting box being provided with the inlet and the outlet, the inlet being located below the grooving assembly to collect the foreign matter; and a vacuum pumping member, the vacuum pumping member being connected to the outlet to vacuum the dust collecting cavity.

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

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

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

[0018] Optionally, the dust collection assembly also includes: a connecting piece, which is arranged on a side of the dust collecting box away from the battery cell, and a dust collection channel extending along the first direction is provided in the connecting piece, one end of the dust collection channel is connected to the outlet, and the other end of the dust collection channel is connected to the vacuum pump.

[0019] Optionally, the grooving mechanism further includes: a positioning component, which is arranged on the grooving component and is used to position the jig of the battery cell.

[0020] Optionally, the positioning assembly includes: at least two positioning pins, and the at least two positioning pins are used to cooperate with the positioning holes on the fixture to position the fixture.

[0021] Optionally, the grooving mechanism also includes: a guide member, which is provided on the base and extends along the first direction, and the grooving assembly is connected to the guide member and can move along the guide member; a second driving member, which is provided on the base and connected to the grooving assembly to drive the grooving assembly to move along the first direction.

[0022] According to a second aspect of the utility model, a battery production device is provided, comprising a groove digging mechanism as described in any one of the above embodiments.

[0023] Optionally, the battery production equipment has a grooving station, and the grooving mechanism is arranged at the grooving station. The battery production equipment also includes: a jig, which is used to clamp the battery cell; and a conveying mechanism, which is used to convey the jig to the grooving station, and a plurality of the grooving mechanisms are arranged on both sides of the conveying mechanism.

[0024] According to the grooving mechanism of the utility model, a grooving assembly is arranged to approach the battery cell along a first direction and radially groove the end face of the battery cell, so that the raised structure on the collecting plate can be inserted into the groove on the end face of the battery cell for welding. The processed groove can accommodate the raised structure of the collecting plate, so that the collecting plate can be directly welded to the end face of the battery cell without the need for flattening. Moreover, metal foreign matter generated by the grooving can fall naturally without remaining on the end face of the battery cell, thereby improving the welding quality.

[0025] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 1 This is a front view of a battery production device according to an embodiment of the utility model;

[0028] Figure 2 It is a top view of a battery production device according to an embodiment of the utility model;

[0029] Figure 3 It is a three-dimensional diagram of a groove digging mechanism and a jig in a battery production device according to an embodiment of the utility model;

[0030] Figure 4It is a three-dimensional diagram of a groove digging mechanism according to an embodiment of the utility model;

[0031] Figure 5 It is a side view of a groove digging mechanism according to an embodiment of the utility model;

[0032] Figure 6 It is a three-dimensional diagram of a digging knife in a grooving mechanism according to an embodiment of the utility model;

[0033] Figure 7 yes Figure 6 An enlarged view of the circled portion at A in the middle;

[0034] Figure 8 It is a side view of a digging cutter in a grooving mechanism according to an embodiment of the utility model;

[0035] Fig. 9 It is a three-dimensional diagram of a dust collecting box and a connecting member in a grooving mechanism according to an embodiment of the utility model;

[0036] Fig.10 It is a top view of a dust box and a connecting member in a groove digging mechanism according to an embodiment of the utility model;

[0037] Fig.11 is along Fig.10 Sectional view along line BB.

[0038] Reference numerals

[0039] 100. Grooving mechanism;

[0040] 10. Base;

[0041] 20. Grooving assembly; 21. Mounting plate; 22. Digging knife; 221. Connecting block; 222. Cutter head; 223. Blade; 224. Arc-shaped closing; 23. First driving member; 24. Speed ​​regulating valve;

[0042] 30. Dust collection assembly; 31. Dust collection box; 311. Dust collection chamber; 312. Inlet; 313. Outlet; 314. First channel; 315. Second channel; 316. Third channel; 32. Connector; 321. Dust collection channel;

[0043] 40. Pressure regulating mechanism;

[0044] 51. Positioning pin;

[0045] 60. Guide member;

[0046] 70. A second driving member;

[0047] 200. Jig; 201. Positioning hole;

[0048] 400, battery cell;

[0049] a. Grooving station. DETAILED DESCRIPTION

[0050] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0051] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0052] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0053] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0054] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0055] The following first describes in detail the groove digging mechanism 100 according to an embodiment of the utility model in conjunction with the accompanying drawings.

[0056] like Figures 1 to 11 As shown, the groove digging mechanism 100 according to the embodiment of the utility model includes: a base 10, a groove digging assembly 20 and a dust collecting assembly 30.

[0057] Specifically, the groove assembly 20 is movably disposed on the base 10 along a first direction to be close to or away from the battery cell 400 , and the groove assembly 20 is configured to radially groove the end surface of the battery cell 400 .

[0058] In other words, the groove digging mechanism 100 according to the embodiment of the utility model is mainly composed of a base 10 , a groove digging assembly 20 and a dust collecting assembly 30 , and the groove digging assembly 20 can be installed on the base 10 .

[0059] The groove digging component 20 can approach or move away from the battery cell 400 along the first direction and groove the end surface of the battery cell 400. The battery cell 400 can be fixed in the fixture 200 to prevent the posture of the battery from changing during the groove digging process.

[0060] It should be noted that the battery cell 400 is mainly formed by winding a pole piece and a diaphragm. The uncoated parts of the pole piece at both ends in its width direction can be formed into pole ears. In traditional technology, the pole ears at the ends of the battery cell 400 need to be flattened and then welded to the collecting plate, which easily produces metal foreign matter residue.

[0061] The groove assembly 20 of this embodiment can radially groove the end face of the battery cell 400. The groove digging method includes but is not limited to cutting, rotation, and impact, so as to form a groove extending radially along the battery cell 400 on the ear structure at the end of the battery cell 400. The number of grooves can be one or more, which is not limited here. The collector plate can be provided with a protruding structure, which can be inserted into the groove on the end face of the battery cell 400, and then the collector plate and the battery cell 400 are directly welded, eliminating the flattening process.

[0062] The grooving of the grooving assembly 20 will produce metallic foreign matter, which can fall off by itself under the action of gravity and will not remain on the end surface of the battery cell 400, thereby facilitating improving the welding quality.

[0063] Therefore, according to the grooving mechanism 100 of the embodiment of the utility model, the grooving assembly 20 is arranged to approach the battery cell 400 along the first direction and radially groove the end face of the battery cell 400, so that the protruding structure on the collecting plate can be inserted into the groove on the end face of the battery cell 400 for welding, and the processed groove can accommodate the protruding structure of the collecting plate, so that the collecting plate can be directly welded to the end face of the battery cell 400 without the need for flattening, and the metal foreign matter generated by the grooving can fall naturally without remaining on the end face of the battery cell 400, thereby improving the welding quality.

[0064] In some specific embodiments of the present invention, the trenching assembly 20 includes a mounting plate 21, a digging knife 22, and a first driving member 23. The mounting plate 21 is movably disposed on the base 10 along a first direction. The digging knife 22 is movably disposed on the mounting plate 21 along a radial direction of the battery cell 400. The first driving member 23 is connected to the digging knife 22 and drives the digging knife 22.

[0065] In other words, the trenching assembly 20 may be mainly composed of a mounting plate 21, a trenching groove, and a first driving member 23. The mounting plate 21 may be connected to the base 10 and move in a first direction relative to the base 10. The digging cutter 22 may be connected to the mounting plate 21, and driven by the first driving member 23, the digging cutter 22 may move in a radial direction of the mounting plate 21.

[0066] When digging grooves, the mounting plate 21 can be coaxial with the battery cell 400, and the digging knife 22 can dig grooves on the end surface of the battery cell 400 when moving radially along the mounting plate 21. It should be noted that the digging knife 22 can dig grooves from inside to outside or from outside to inside, which is not limited here.

[0067] Optionally, the first driving member 23 may include but is not limited to a claw-shaped cylinder or an electric cylinder.

[0068] According to some optional embodiments of the present invention, there are multiple digging knives 22, and the multiple digging knives 22 are arranged along the circumference of the mounting plate 21, so that the grooving mechanism 100 can open multiple radially extending grooves on the end surface of the battery cell 400.

[0069] It should be noted that the number of grooves on the end surface of the battery cell 400 can be set according to the specific structure of the current collecting plate, and then the grooves 22 can be added in the circumferential direction of the mounting plate 21 .

[0070] like Figure 5 As shown, three digging knives 22 may be arranged on the mounting plate 21 along the circumferential direction, and the three digging knives 22 may be distributed in a centrally symmetrical manner.

[0071] According to some other embodiments of the utility model, the digging knife 22 includes a connecting block 221 and a cutter head 222. The connecting block 221 is connected to the mounting plate 21. One end of the cutter head 222 is connected to the connecting block 221, and the other end of the cutter head 222 is formed as a blade 223. In the direction from the outside to the inside of the mounting plate 21, the distance between the cutter head 222 and a side surface of the mounting plate 21 facing the cutter head 222 gradually increases.

[0072] Specifically, the digging tool 22 is mainly composed of a connecting block 221 and a cutter head 222. The connecting block 221 is movably arranged on the mounting plate 21 along the radial direction of the mounting plate 21. One end of the connecting block 221 close to the axis of the mounting plate 21 can be connected to one end of the cutter head 222, and the other end of the cutter head 222 can extend obliquely toward the axis of the mounting plate 21 and away from one side of the mounting plate 21. In other words, an angle can be formed between the cutter head 222 and the connecting block 221, and the angle can be an obtuse angle. This is conducive to the uniformity of the force on the digging tool 22 and increases the life of the digging tool 22.

[0073] In addition, a blade 223 may be provided at one end of the digging tool 22 away from the connecting block 221 . When the digging tool 22 moves radially along the mounting plate 21 , the blade 223 may cut the end surface of the battery cell 400 along the radial direction of the battery cell 400 .

[0074] In some specific embodiments of the present invention, the blade 223 extends in a straight line, and arc-shaped closing edges 224 are respectively provided at both ends of the blade 223. Thus, the grooves on the end faces of the battery cells 400 can be made more regular, preventing the edges of the grooves from being too sharp and affecting the flattening of the battery cells 400, thereby affecting the quality of the battery cells 400.

[0075] According to some other embodiments of the present invention, the trenching assembly 20 further includes a speed regulating valve 24, which is disposed on the first driving member 23 and is used to adjust the speed of the trenching cutter 22. The speed regulating valve 24 can control the force and speed of trenching to meet different trenching requirements.

[0076] In some specific embodiments of the present invention, the groove digging mechanism 100 further includes a pressure regulating component, which is connected to the groove digging component 20 and is used to adjust the pressure between the groove digging component 20 and the end surface of the battery cell 400. Before groove digging, the pressure regulating component can be pre-adjusted to ensure that the groove digging force is consistent each time, which is conducive to improving the quality of groove digging.

[0077] Optionally, the pressure regulating mechanism 40 may be connected to the groove digging assembly 20 via a guide rod.

[0078] According to some optional embodiments of the utility model, the groove digging mechanism 100 further includes a positioning component, which is arranged on the groove digging component 20, and the positioning component is used to position the fixture 200 of the battery cell 400. Therefore, the positioning component can move along the first direction together with the groove digging component 20, and when the groove digging component 20 approaches the fixture 200 clamping the battery cell 400, the positioning component also approaches the battery cell 400 and completes the positioning of the fixture 200, which is conducive to improving the positioning accuracy, for example, the positioning accuracy can be guaranteed to be 0.2mm.

[0079] According to one embodiment of the utility model, the dust collecting assembly 30 is disposed on the base 10, and the dust collecting assembly 30 is defined by a dust collecting chamber 311 and an inlet 312 connected to the dust collecting chamber 311, and the inlet 312 can generate negative pressure to absorb foreign matter generated by grooving into the dust collecting chamber 311.

[0080] Specifically, the dust collecting assembly 30 can be installed on the base 10. When the groove assembly 20 grooves the end surface of the battery cell 400, metal foreign matter will be generated. Since the inlet 312 is under negative pressure, the metal foreign matter generated by the groove can be sucked into the dust collecting chamber 311 through the inlet 312, and then collected and processed uniformly by the dust collecting chamber 311.

[0081] In this embodiment, a dust collecting assembly 30 is provided in the grooving mechanism 100 , which can utilize negative pressure to absorb and remove metal foreign matter generated by cutting during grooving, thereby avoiding affecting the quality of the battery cell 400 .

[0082] According to some optional embodiments of the present invention, the trenching assembly 20 is movable between a first state and a second state.

[0083] When the groove assembly 20 is in the first state, the groove assembly 20 contacts the end surface of the battery cell 400 and radially grooves the end surface of the battery cell 400, and at least a portion of the orthographic projection of the groove assembly 20 on the horizontal plane coincides with the orthographic projection of the inlet 312 on the horizontal plane. When the groove assembly 20 is in the second state, the groove assembly 20 is spaced apart from the battery cell 400, and the orthographic projection of the groove assembly 20 on the horizontal plane is staggered with the orthographic projection of the inlet 312 on the horizontal plane.

[0084] Specifically, the first state may be a groove digging state, and the second state may be a standby state. The inlet 312 may be located below the end surface of the battery cell 400 to receive metal foreign matter generated by the groove digging.

[0085] When the grooving assembly 20 is in the first state, the digging tool 22 can act on the end surface of the battery cell 400, and then the first driving member 23 drives the digging tool 22 to move radially along the battery cell 400 to radially groove the end surface of the battery cell 400. A horizontal plane can be defined as a projection plane, and the projection of the blade 223 of the digging tool 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 blade 223, so that the metal foreign matter generated by the grooving naturally falls to the inlet 312, which is convenient for adsorbing and collecting the metal foreign matter.

[0086] When the grooving assembly 20 is in the second state, the digging knife 22 is spaced apart from the end surface of the battery cell 400 . Since the dust box 31 is fixed on the base 10 , the inlet 312 is still located below the end of the battery cell 400 , and therefore the digging knife 22 is spaced apart from the inlet 312 in the first direction.

[0087] According to one embodiment of the utility model, the dust collection assembly 30 includes a dust collection box 31 and a vacuum pump. The dust collection box 31 has a dust collection chamber 311, and an inlet 312 and an outlet 313 are provided on the dust collection box 31. The inlet 312 is located below the groove assembly 20 to collect foreign matter. The vacuum pump is connected to the outlet 313 to vacuum the dust collection chamber 311.

[0088] Specifically, the inlet 312 of the dust box 31 can be located below the groove digging assembly 20. When the groove digging assembly 20 digs a groove, metal foreign matter can fall into the dust collecting chamber 311 through the inlet 312 under the action of gravity, which is conducive to improving the dust collection effect. The vacuum pump is connected to the dust collecting chamber 311 through the outlet 313, so that negative pressure can be formed in the dust collecting chamber 311 and at the inlet 312, thereby adsorbing the metal foreign matter.

[0089] According to some other embodiments of the present invention, the inlet 312 and the outlet 313 are spaced apart from each other in the second direction, and the second direction is perpendicular to the first direction.

[0090] Specifically, when the groove is being dug, the axis of the battery cell 400 may extend along the first direction, and the groove assembly 20 needs to move along the first direction, so a space needs to be reserved in the axial direction of the battery cell 400 for the movement of the groove assembly 20. Since the first direction is perpendicular to the second direction, the second direction may be the radial direction of the battery cell 400.

[0091] In order to ensure the dust collection effect, the inlet 312 can be arranged below the end of the battery cell 400. Therefore, the inlet 312 and the outlet 313 are arranged to be spaced apart in the second direction, so that the connection structure between the outlet 313 and the vacuum pump can be arranged on the side of the groove assembly 20, thereby facilitating the movement of the groove assembly 20 along the first direction.

[0092] In some specific embodiments of the present invention, the dust box 31 and the inlet 312 extend along the second direction respectively, that is, the dust box 31 can extend along the radial direction of the battery cell 400 to increase the space of the dust collecting 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 grooves can fall into the inlet 312, thereby improving the dust collection effect.

[0093] According to some optional embodiments of the present utility model, the dust collecting chamber 311 includes a first channel 314, a second channel 315 and a third channel 316 which are connected in sequence, the first channel 314 and the second channel 315 extend along a 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, an end of the first channel 314 away from the second channel 315 is formed as an inlet 312, in the direction from the first channel 314 to the second channel 315, the cross-sectional area of ​​the first channel 314 gradually decreases, and an end of the third channel 316 away from the second channel 315 is formed as an outlet 313.

[0094] In other words, if Fig.11 As shown, the dust collecting chamber 311 may be mainly composed of a first channel 314, a second channel 315 and a third channel 316. Optionally, the first direction and the second direction are horizontal directions perpendicular to each other, and the third direction is a vertical direction.

[0095] The first channel 314 and the second channel 315 both extend in the vertical direction, and the third channel 316 extends in the horizontal direction. The top of the first channel 314 is open to form an inlet 312. The opening can be roughly rectangular. The bottom end of the first channel 314 can be connected to the top of the second channel 315, and the area of ​​the cross section of the first channel 314 gradually decreases from top to bottom, thereby forming an inclined inner wall surface to guide 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 connected to the second channel 315, and the end of the third channel 316 away from the second channel 315 can be formed as an outlet 313.

[0096] Thus, the first channel 314, the second channel 315 and the third channel 316 cooperate to form an L-shaped dust collecting chamber 311, which can effectively collect and contain metal foreign matter, and the metal foreign matter is not easy to be lost in the chamber, avoiding the flying of foreign matter, and also facilitating the cleaning of the dust collecting chamber 311.

[0097] According to some other embodiments of the utility model, the dust collecting assembly 30 also includes a connecting member 32, which is arranged on the side of the dust collecting box 31 away from the battery cell 400, and a dust collecting channel 321 extending along the first direction is provided in the connecting member 32, one end of the dust collecting channel 321 is connected to the outlet 313, and the other end of the dust collecting channel 321 is connected to the vacuum pump.

[0098] like Figures 9 to 11 As shown, a connector 32 is provided at the outlet 313 of the dust box 31. Optionally, the connector 32 and the dust box 31 may be an integrally formed part. The dust collection channel 321 in the connector 32 may extend along a first direction toward a side away from the battery cell 400, and an end of the dust collection channel 321 away from the dust box 31 may be connected to a vacuum pump through a pipeline.

[0099] In this embodiment, the connection piece 32 is provided on the dust box 31 to facilitate the dust box 31 to be connected with the vacuum element through a pipeline, and the pipeline can be sleeved on the outer surface of the connection piece 32.

[0100] Optionally, the connecting member 32 may be cylindrical.

[0101] According to some other embodiments of the present invention, the positioning assembly includes at least two positioning pins 51 , and the at least two positioning pins 51 are used to cooperate with the positioning holes 201 on the fixture 200 to position the fixture 200 .

[0102] Specifically, the fixture 200 may be provided with a plurality of positioning holes 201, and the axes of the positioning holes 201 may extend along the first direction. The number of positioning holes 201 may be the same as the number of positioning pins 51 in the positioning assembly, and the plurality of positioning holes 201 and the plurality of positioning pins 51 may correspond one to one.

[0103] When the grooving assembly 20 approaches the jig 200 along the first direction, multiple 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 positioning pins 51 can be used to position the battery cell 400, which is beneficial to improve the accuracy of grooving.

[0104] In some specific embodiments of the present invention, the groove digging mechanism 100 further includes a guide member 60 and a second driving member 70. The guide member 60 is disposed on the base 10 and extends along the first direction, and the groove digging assembly 20 is connected to the guide member 60 and can move along the guide member 60. The second driving member 70 is disposed on the base 10, and the second driving member 70 is connected to the groove digging assembly 20 to drive the groove digging assembly 20 to move along the first direction. Thus, the second driving member 70 can ensure that each battery cell 400 has a predetermined groove depth.

[0105] Specifically, a guide member 60 extending along the first direction is provided on the base 10. Optionally, the guide member 60 may be a linear rail, the slotting assembly 20 may be connected to the slider, and the second driving member 70 may be connected to the slider and drive the slider to slide along the linear rail. The second driving member 70 may include but is not limited to an electric cylinder.

[0106] The embodiment of the utility model further provides a battery production device, which includes a groove digging mechanism 100 according to any of the above embodiments. Since the groove digging mechanism 100 according to the embodiment of the utility model has the above technical effects, the battery production device according to the embodiment of the utility model also has corresponding technical effects, that is, it can avoid the generation of metal foreign matter in the subsequent flattening process, which is beneficial to improve the welding quality between the collector plate and the pole ear, and at the same time, negative pressure can be used to absorb and remove dust from metal foreign matter generated by cutting during groove digging, so as to avoid affecting the quality of the battery cell 400.

[0107] According to some other embodiments of the utility model, the battery production equipment has a groove digging station a, and the groove digging mechanism 100 is arranged at the groove digging station a. The battery production equipment also includes a fixture 200 and a conveying mechanism. The fixture 200 is used to clamp the battery cell 400. The conveying mechanism is used to convey the fixture 200 to the groove digging station a, and multiple groove digging mechanisms 100 are arranged on both sides of the conveying mechanism.

[0108] like Figure 2 As shown, multiple groove digging mechanisms 100 can be respectively provided on both sides of the conveying mechanism, and the multiple groove digging mechanisms 100 can be arranged in sequence along the conveying direction of the conveying mechanism, so as to simultaneously dig grooves on both ends of the battery cell 400. The conveying mechanism, the fixture 200 and the groove digging mechanism 100 are provided to realize automatic groove digging, which is conducive to improving production efficiency.

[0109] The process of digging the grooves of the battery cell 400 in this embodiment is described in detail below.

[0110] The conveying mechanism conveys the jig 200 with the battery cell 400 installed to the grooving station a, and then the positioning pin 51 in the grooving mechanism 100 is inserted into the positioning hole 201 of the jig 200 to complete the positioning of the jig 200. The grooving pressure is adjusted in advance by the pressure regulating assembly to ensure that the end face clamping force is consistent. The second driving member 70 drives the grooving assembly 20 to approach the battery cell 400, and enables the digging tool 22 to act on the end face of the battery cell 400. The air claw cylinder serving as the first driving member 23 opens, so that the digging tool 22 moves radially outward along the battery cell 400, and the grooving force and grooving speed can be adjusted using the pressure regulating valve. The chips generated by grooving are transferred into the dust collecting chamber 311 through the inlet 312, and are collected and transported out through the outlet 313 and the dust collecting channel 321 under negative pressure.

[0111] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A grooving mechanism, characterized in that: include: Pedestal; A groove-cutting assembly is movably disposed on the base along a first direction to be close to or away from the battery core, and the groove-cutting assembly is configured to radially groove the end surface of the battery core.

2. The groove digging mechanism according to claim 1, characterized in that: The trenching assembly comprises: A mounting plate, the mounting plate being movably disposed on the base along the first direction; A digging knife, the digging knife is movably arranged on the mounting plate along the radial direction of the battery core; A first driving member is connected to the digging tool and drives the digging tool.

3. The groove digging mechanism according to claim 2, characterized in that: There are multiple digging knives, and the multiple digging knives are arranged along the circumference of the mounting plate.

4. The groove digging mechanism according to claim 2, characterized in that: The digging knife comprises: A connecting block connected to the mounting plate; A cutter head, one end of which is connected to the connecting block, and the other end of which is formed as a blade. In a direction from the outside to the inside of the mounting plate, a distance between the cutter head and a side surface of the mounting plate toward the cutter head gradually increases.

5. The groove digging mechanism according to claim 4, characterized in that: The blade extends in a straight line, and arc-shaped closing edges are respectively arranged at two ends of the blade.

6. The groove digging mechanism according to claim 2, characterized in that: The trenching assembly further comprises: A speed regulating valve is arranged on the first driving member and is used to adjust the speed of the digging cutter.

7. The groove digging mechanism according to claim 1, characterized in that: Also includes: A pressure regulating component is connected to the grooving component and is used to regulate the pressure between the grooving component and the end face of the battery cell.

8. The groove digging mechanism according to claim 1, characterized in that: Also includes: A dust collecting component is arranged on the base, and the dust collecting component is defined with a dust collecting chamber and an inlet connected with the dust collecting chamber, and the inlet can generate negative pressure to absorb foreign matter generated by the grooving into the dust collecting chamber.

9. The groove digging mechanism according to claim 8, characterized in that: The trenching assembly is movable between a first state and a second state, When the groove assembly is in the first state, the groove assembly contacts the end surface of the battery cell and radially grooves the end surface of the battery cell, and at least a portion of the orthographic projection of the groove assembly on the horizontal plane coincides with the orthographic projection of the inlet on the horizontal plane; When the groove assembly is in the second state, the groove assembly is spaced apart from the battery cell, and an orthographic projection of the groove assembly on a horizontal plane is offset from an orthographic projection of the inlet on the horizontal plane.

10. The groove digging mechanism according to claim 8, characterized in that: The dust collection component comprises: A dust collecting box, the dust collecting box having the dust collecting cavity, the dust collecting box being provided with the inlet and the outlet, the inlet being located below the grooving assembly to collect the foreign matter; A vacuum pumping member is connected to the outlet to vacuum the dust collecting chamber.

11. The groove digging mechanism according to claim 10, characterized in that: The inlet and the outlet are spaced apart from each other in a second direction, and the second direction is perpendicular to the first direction.

12. The groove digging mechanism according to claim 11, characterized in that: The dust collecting box and the inlet extend along a second direction respectively.

13. The groove digging mechanism according to claim 11, characterized in that: The dust collecting chamber includes a first channel, a second channel and a third channel which are connected in sequence, the first channel and the second channel extend along a third direction respectively, the third channel extends along the second direction, the third direction is perpendicular to the first direction and the second direction respectively, an end of the first channel away from the second channel is formed as the inlet, and in the direction from the first channel to the second channel, the cross-sectional area of ​​the first channel gradually decreases, and an end of the third channel away from the second channel is formed as an outlet.

14. The groove digging mechanism according to claim 10, characterized in that: The dust collection assembly also includes: A connecting piece, wherein the connecting piece is arranged on a side of the dust collecting box away from the battery core, and a dust collecting channel extending along the first direction is arranged in the connecting piece, one end of the dust collecting channel is connected to the outlet, and the other end of the dust collecting channel is connected to the vacuum extractor.

15. The groove digging mechanism according to claim 1, characterized in that: Also includes: A positioning component is arranged on the groove digging component, and the positioning component is used to position the fixture of the battery cell.

16. The groove digging mechanism according to claim 15, characterized in that: The positioning component comprises: At least two positioning pins are used to cooperate with the positioning holes on the fixture to position the fixture.

17. The groove digging mechanism according to claim 1, characterized in that: Also includes: A guide member, the guide member is arranged on the base and extends along the first direction, the groove digging assembly is connected to the guide member and is movable along the guide member; A second driving member is disposed on the base, and the second driving member is connected to the groove digging assembly to drive the groove digging assembly to move along the first direction.

18. A battery production device, characterized in that: include: A grooving mechanism, wherein the grooving mechanism is the grooving mechanism according to any one of claims 1-17.

19. The battery production equipment according to claim 18, characterized in that: The battery production equipment has a groove digging station, and the groove digging mechanism is arranged at the groove digging station. The battery production equipment also includes: A fixture, the fixture is used to clamp the battery cell: A conveying mechanism is used to convey the jig to the grooving station, and a plurality of grooving mechanisms are arranged on both sides of the conveying mechanism.

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