Laser-assisted sintering device

Abstract

The utility model provides a laser-assisted sintering device, which comprises a power-up roll shaft assembly, a power-up roll shaft assembly, a power-up roll shaft assembly, a power-up roll shaft assembly and a power-up roll shaft assembly, the laser assembly is used for emitting laser to the battery piece to which the reverse voltage is applied; the transmission assembly comprises a first straight gear located on the first roller shaft assembly and a second straight gear located on the second roller shaft assembly. And the lifting assembly is used for driving the second roll shaft assembly to move in the height direction, so that the second straight gear is separated from or engaged with the first straight gear. According to the utility model, the first roll shaft assembly and the second roll shaft assembly which are in transmission connection are used for realizing the transmission of the battery pieces, the transmission is more efficient and stable, and the lifting assembly drives the second roll shaft assembly to move along the height direction, so that the first roll shaft assembly and the second roll shaft assembly can be conveniently separated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of semiconductor preparation, especially a laser auxiliary sintering device. BACKGROUND

[0002] At present, in the field of battery piece manufacturing equipment, laser auxiliary sintering devices are mostly used to transport battery pieces in the sintering process of battery pieces. The traditional laser auxiliary sintering device is mostly single roller, and only a transmission roller is arranged at the bottom of the battery piece to transport the battery piece. Single roller transmission is easy to cause the inclination of the battery piece, and the stability is poor.

[0003] Therefore, it is necessary to provide a laser auxiliary sintering device to solve the above technical problems. SUMMARY

[0004] In order to achieve the above purpose, the utility model provides a laser auxiliary sintering device, a power-on roller shaft assembly, including first roller shaft assembly, second roller shaft assembly along the height direction arrangement, first roller shaft assembly, second roller shaft assembly is connected to the positive pole, negative pole of power supply respectively to apply reverse voltage to battery piece, laser assembly is used for emitting laser to the battery piece of applying reverse voltage, transmission assembly, including first spur gear on first roller shaft assembly and second spur gear on second roller shaft assembly, lifting assembly is used for driving second roller shaft assembly moves along the height direction, so that second spur gear and first spur gear are separated or engaged.

[0005] As a further improvement of the utility model, it further comprises a supporting seat located below the lifting assembly, the first roller shaft assembly comprises a plurality of first transmission rollers rotatably installed on the supporting seat, and the first spur gear is located at the end of the first transmission roller shaft.

[0006] As a further improvement of the utility model, the second roller shaft assembly comprises a lifting plate connected with the lifting assembly, a plurality of second transmission rollers rotatably installed on the lifting plate, and the second spur gear is located at the end of the second transmission roller.

[0007] As a further improvement of the utility model, the lifting plate comprises a first connecting plate connected with the lifting assembly, a second connecting plate located on both sides of the first connecting plate, and the second transmission roller is rotatably installed between the two second connecting plates.

[0008] As a further improvement of the utility model, the lifting plate comprises a first connecting plate connected with the lifting assembly, a second connecting plate located on both sides of the first connecting plate, a third connecting plate movably connected with the second connecting plate along the height direction, an elastic member connecting the second connecting plate and the third connecting plate, and the second transmission roller is rotatably installed between the two third connecting plates.

[0009] As a further improvement of the utility model, the elastic piece extends along the height direction, and the connecting end of the elastic piece and the second connecting plate is above the connecting end of the elastic piece and the third connecting plate.

[0010] As a further improvement of the utility model, the second roller shaft assembly further comprises self-aligning bearings at both ends of the second transmission roller, and the second transmission roller is rotatably installed between two second connecting plates or two third connecting plates through the self-aligning bearings.

[0011] As a further improvement of the utility model, the adjustment range of the self-aligning bearing is 0-10mm.

[0012] As a further improvement of the utility model, the lifting assembly comprises a support frame and a driving piece on the support frame, and the second roller shaft assembly is connected to the output end of the driving piece.

[0013] As a further improvement of the utility model, the lifting assembly is provided in pairs and is arranged on both sides of the second roller shaft assembly.

[0014] The utility model discloses the first roller shaft assembly and the second roller shaft assembly of transmission connection realize the transmission of battery piece, and it is more efficient and stable, and the second roller shaft assembly is driven along the height direction by the lifting assembly to separate the first roller shaft assembly and the second roller shaft assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the utility model, and the illustrative embodiment and the description thereof are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0016] Figure 1 It is the schematic view of the laser auxiliary sintering device of the utility model in the transmission state;

[0017] Figure 2 It is the schematic view of the laser auxiliary sintering device of the utility model in the separation state;

[0018] Figure 3 It is the schematic view of the laser assembly-power roller shaft assembly of the utility model;

[0019] Figure 4 It is the schematic view of the power roller shaft assembly of the utility model and is connected to the power supply;

[0020] Figure 5 It is the schematic view of the laser auxiliary sintering device with double lifting assemblies of the utility model.

[0021] Figure 6 It is the connection diagram of the second roller shaft assembly of the lifting assembly of the utility model;

[0022] Figure 7 It is the schematic view of the second roller shaft assembly in one embodiment of the utility model;

[0023] Figure 8 It is the schematic view of the second roller shaft assembly in another embodiment of the utility model;

[0024] Figure 9 It is the exploded schematic view of the second roller shaft assembly shown in figure Figure 8

[0025] Figure 10 It is the schematic view of the second roller shaft assembly in the lifting adjustment state shown in figure Figure 8

[0026] Figure 11 It is the schematic view of the second roller shaft assembly in another embodiment of the utility model;

[0027] Figure 12 It is the schematic view of the second transmission roller of the utility model;

[0028] Figure 13 It is the schematic view of the adjusting piece of the utility model;

[0029] Figure 14 It is the connection schematic view of the first roller shaft assembly-supporting seat of the utility model;

[0030] Figure 15 It is the side schematic view of the second roller shaft assembly in the lifting adjustment state shown in figure Figure 8

[0031] It is the schematic view of the second transmission roller in the horizontal state of the utility model; Figure 16

[0032] It is the schematic view of the second transmission roller in the "floating" adjustment state of the utility model; Figure 17

[0033] It is the light spot scanning path diagram of the utility model; Figure 18

[0034] It is the schematic view of the moving track and the swept area on the battery piece when the light spot of the utility model circulates and scans according to the scanning path shown in figure Figure 19 DETAILED DESCRIPTION Figure 18

[0035] ​​​​In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described below in connection with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0037] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In the description of the present application, unless otherwise specified and limited, it should be noted that the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be a mechanical connection or an electrical connection, or a communication between two elements, or a direct connection, or an indirect connection through an intermediate medium, and those skilled in the art can understand the specific meanings of the above terms according to the specific circumstances.

[0039] As Figures 1 to 19 As shown, the laser-assisted sintering device provided by the present application comprises a laser assembly 301, an electrified roller shaft assembly 302, a transmission assembly 303, a support seat 304 and a lifting assembly 305.

[0040] The laser assembly 301 is used to emit laser to the battery piece subjected to reverse voltage.

[0041] The electrifying roller assembly 302 applies reverse voltage to the battery sheet while conveying the battery sheet. The electrifying roller assembly 302 comprises a first roller assembly 302a and a second roller assembly 302b arranged along the height direction, and the battery sheet is located between the first roller assembly 302a and the second roller assembly 302b. The first roller assembly 302a and the second roller assembly 302b are respectively connected to the positive electrode and the negative electrode of the power supply to apply reverse voltage to the battery sheet while conveying the battery sheet.

[0042] The transmission assembly 303 is used to realize the transmission between the first roller assembly 302a and the second roller assembly 302b.

[0043] The support seat 304 is used to mount the first roller assembly 302a.

[0044] The lifting assembly 305 is used to drive the second roller assembly 302b to move along the height direction to move towards or away from the first roller assembly 302a.

[0045] Specifically, the laser emitted by the laser assembly 301 is located in the conveying area of the electrifying roller assembly 302, so as to form a laser irradiation area in the conveying area of the electrifying roller assembly 302. When the battery sheet passes through the laser irradiation area, induced current is generated on the battery sheet to which reverse voltage is applied. When the battery sheet flows through the area with high contact resistance, high temperature is generated, which has a sintering effect, thereby reducing the contact resistance.

[0046] The laser assembly 301 comprises a laser source for emitting laser and a shaping assembly for shaping the laser into a square laser spot. The laser assembly 301 further comprises a galvanometer and a field lens. The galvanometer is used to receive the shaped laser spot and adjust the scanning position, scanning amplitude and scanning speed of the laser spot according to the scanning parameters. The field lens is fixedly connected with the galvanometer and is used to focus the laser spot to the surface of the battery sheet. The square laser spot can scan and irradiate the entire battery sheet during the movement of the battery sheet.

[0047] The first roller assembly 302a and the second roller assembly 302b of the electrifying roller assembly 302 are symmetrically arranged along the middle line of the height direction of the electrifying roller assembly 302. The first roller assembly 302a is in contact with the lower surface of the battery sheet, and the second roller assembly 302b is in contact with the upper surface of the battery sheet.

[0048] The first roller assembly 302a comprises a plurality of first transmission rollers 302a-1 rotatably mounted on the support seat 304. The first transmission rollers 302a-1 are arranged along the conveying direction of the battery sheet. The two ends of the first transmission rollers 302a-1 are rotatably mounted on the top of the support seat 304 through bearings 302a-2.

[0049] The second roller assembly 302b includes a lifting plate 302b-2 connected to the lifting assembly 305 and a second transmission roller 302b-1 rotatably mounted on the lifting plate 302b-2. The lifting assembly 305 drives the lifting plate 302b-2 to move along the height direction, thereby driving the second transmission roller 302b-1 on the lifting plate 302b-2 to move along the height direction, so as to adjust the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1.

[0050] The number of second drive rollers 302b-1 and first drive rollers 302a-1 is the same, and several second drive rollers 302b-1 are arranged along the direction of cell transport. The first drive rollers 302a-1 and second drive rollers 302b-1 are arranged in a one-to-one correspondence, and the projection of the second drive roller 302b-1 onto the first drive roller 302a-1 along the height direction completely coincides with the first drive roller 302a-1. The first drive roller 302a-1 and the second drive roller 302b-1 are respectively connected to the positive and negative terminals of the power supply to apply a reverse voltage to the cell while transporting it.

[0051] In this embodiment, the first roller assembly 302a is located below the second roller assembly 302b, and the first drive roller 302a-1 is the driving roller, while the second drive roller 302b-1 is the driven roller. The first drive roller 302a-1 drives the second drive roller 302b-1 to rotate via the drive assembly 303, thereby transmitting the battery cells located between the first drive roller 302a-1 and the second drive roller 302b-1.

[0052] It is understood that the laser radiation zone is located between two adjacent first transmission rollers 302a-1, that is, the laser component 301 emits laser light between the two first transmission rollers 302a-1, so as to be able to scan the entire battery cell during the battery cell transmission process.

[0053] Reference Figures 18 to 19 The laser emitted by the laser component 301 forms a light spot on the battery cell, and the light spot is scanned multiple times along a preset scanning path by the galvanometer.

[0054] Assuming that in the transverse direction perpendicular to the front-back direction, the two sides of the solar cell are designated as the first side and the second side, respectively, the transverse direction is... Figure 18 The center represents the left and right directions. Figure 18 In this embodiment, the left side of the solar cell is the first side, and the right side is the second side. In other embodiments, the right side of the solar cell may be the first side, and the left side is the second side.

[0055] The scanning path comprises a first path S1 from a first point O1 on the first side to a second point O2 on the second side, a second path S2 from the second point O2 back to a third point O3, and a third path S3 from the third point O3 to the first side. The scanning path is a closed loop path, and the first point O1 is the start point and the end point of the scanning path, i.e. the irradiation point moves from the second side to the first side along the third path S3 and then returns to the first point O1.

[0056] The first path S1 extends obliquely from back to front or is parallel to the transverse direction, and the third path S3 extends obliquely from back to front.

[0057] In a specific embodiment, the third path S3 moves from the third point O3 to a fourth point O4 on the first side of the battery piece, and the scanning path further comprises a fourth path S4 from the fourth point O4 back to the first point O1. In this way, the scanning path generally presents an 8-shaped or hourglass-shaped path, and the light spot circulates along the 8-shaped or hourglass-shaped scanning path.

[0058] Specifically, the first path S1 extends obliquely from back to front, and when the light spot moves along the first path S1, it not only moves from the first side to the second side along the transverse direction, but also moves a certain distance forward along the front-back direction. As mentioned above, the third path S3 extends obliquely from back to front, and when the light spot moves along the third path S3, it not only moves from the second side to the first side along the transverse direction, but also moves a certain distance forward along the front-back direction.

[0059] The distance between the first point O1 and the second point O2 in the front-back direction, the distance between the third point O3 and the fourth point O4 in the front-back direction, and the distance between the second point O2 and the third point O3 in the front-back direction are all equal to H, the distance that the light spot moves forward when moving along the first path S1 is H, and the distance that the light spot moves forward when moving along the third path S3 is also H.

[0060] It is conceivable that in the above case, the distance between the fourth point O4 and the first point O1 in the front-back direction is also equal to H, and the distance that the battery piece moves forward during one complete scanning of the light spot is equal to 2H.

[0061] In this embodiment, the two ends of the first path S1 and the two ends of the third path S3 all extend beyond the battery piece in the transverse direction, so that when the light spot moves along the first path S1 and the third path S3, it can completely scan the battery piece in the transverse direction, and the scanned area can cover the battery piece when the light spot circulates along the scanning path multiple times.

[0062] Specifically, the ratio of the length of the first path or the third path to the size H of the light spot in the front-back direction is not less than 10.

[0063] The first path S1 and the third path S3 have equal lengths, and the second path S2 and the fourth path S4 also have equal lengths. If the battery piece moves at a constant speed, the distance 2H that the battery piece moves forward during the process that the light spot completes one scanning can be divided into: the distance H that the battery piece moves forward when the light spot moves from the first point O1 to the second point O2 along the first path S1, and the distance H that the battery piece moves forward when the light spot moves from the third point O3 to the fourth point O4 along the third path S3. Since the distance that the light spot moves forward when moving along the first path S1 is H, and the distance that the light spot moves forward when moving along the third path S3 is H, the battery piece moves synchronously with the light spot when the light spot moves along the first path S1 and the third path S3. Thus, when the light spot scans according to the scanning path, a plurality of strip-shaped areas that the light spot scans on the battery piece are parallel to the transverse direction and cover the battery piece, and the light spot can basically scan all areas of the battery piece. Figure 19 The schematic diagram of the moving track and the scanned area of the light spot on the battery piece when the light spot scans according to the scanning path of the embodiment.

[0064] It can be understood that the distance between the first point O1 and the second point O2 in the front-rear direction, the distance between the third point O3 and the fourth point O4 in the front-rear direction, and the distance between the second point O2 and the third point O3 in the front-rear direction can also be slightly greater than or slightly less than the size H of the light spot in the front-rear direction. The transmission assembly 303 includes a first spur gear 303a located on the first roller shaft assembly 302a and a second spur gear 303b located on the second roller shaft assembly 302b.

[0065] Specifically, the first spur gear 303a is located at the axial end of the first transmission roller 302a-1. The second spur gear 303b is located at the axial end of the second transmission roller 302b-1. The first spur gear 303a and the second spur gear 303b are located on the same side. By driving the second roller shaft assembly 302b to move downward by the lifting assembly 305, until the first spur gear 303a and the second spur gear 303b are engaged, the rotation of the first transmission roller 302a-1 can synchronously drive the rotation of the second transmission roller 302b-1. By driving the second roller shaft assembly 302b to move upward by the lifting assembly 305, so that the first spur gear 303a and the second spur gear 303b are separated, the battery piece fragments between the first transmission roller 302a-1 and the second transmission roller 302b-1 can be removed.

[0066] Reference Figure 7In one embodiment, the lifting plate 302b-2 comprises a first connecting plate 302b-21 connected with the lifting assembly 305, and second connecting plates 302b-22 located on both sides of the first connecting plate 302b-21. The second transmission roller 302b-1 is rotatably mounted between the two second connecting plates 302b-22.

[0067] Specifically, the first connecting plate 302b-21 extends in a direction parallel to the second transmission roller 302b-1. The two second connecting plates 302b-22 are respectively located on both sides of the first connecting plate 302b-21, and the second connecting plates 302b-22 are perpendicular to the first connecting plate 302b-21, i.e. the second connecting plates 302b-22 extend in the direction of the battery piece transmission.

[0068] The second transmission roller 302b-1 is rotatably mounted between the two second connecting plates 302b-22 through self-aligning bearings 302b-3 located at both ends thereof. The self-aligning bearings 302b-3 have a certain rotation angle, so that the second transmission roller 302b-1 can rotate with a certain inclination angle.

[0069] The cross section of the first transmission roller 302a-1 or the second transmission roller 302b-1 at any position is not a completely regular circle due to the existence of tolerance. Due to the influence of the tolerance of both, the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 is not constant. Thus, during the transmission of the battery piece, when the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 at a certain corresponding position is reduced, the pressure on the battery piece at this position will increase, which may cause damage to the battery piece.

[0070] However, when the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 at a certain corresponding position is reduced, the self-aligning bearing 302b-3 will rotate under the pressure at this position, so that the second transmission roller 302b-1 will incline, thereby reducing the pressure on the battery piece at this position and preventing damage to the battery piece.

[0071] Referring to Figure 16 Under normal conditions, the second transmission roller 302b-1 is in a horizontal state, and the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 is L1. Referring to Figure 17When the self-aligning bearing 302b-3 rotates, the second transmission roller 302b-1 is inclined, the maximum distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 is L2, and L2 is greater than L1.

[0072] It can be understood that, during the transmission of the battery, the second transmission roller 302b-1 will constantly float under the action of the self-aligning bearing 302b-3, so as to adjust the distance from the first transmission roller 302a-1 to prevent the battery sheet from being crushed. It should be particularly pointed out that, during the floating of the second transmission roller 302b-1, the floating range is small, and the first spur gear 303a and the second spur gear 303b will not be separated.

[0073] The self-aligning bearing 302b-3 can also solve the problem that the first spur gear 303a and the second spur gear 303b cannot be engaged during the descent of the second transmission roller 302b-1.

[0074] When the lifting assembly 305 drives the second roller shaft assembly 302b to move downward, so that the first spur gear 303a and the second spur gear 303b are engaged, the first spur gear 303a and the second spur gear 303b can be in a misaligned state and cannot be engaged in place.

[0075] In this case, when the second spur gear 303b contacts the first spur gear 303a, the self-aligning bearing 302b-3 rotates, so that the second transmission roller 302b-1 is inclined upward from the end away from the second spur gear 303b to the end where the second spur gear 303b is located. Even if the first spur gear 303a and the second spur gear 303b are in a misaligned state, the second transmission roller 302b-1 can descend to the position where the first spur gear 303a and the second spur gear 303b are completely engaged. When the first transmission roller 302a-1 rotates, the second spur gear 303b gradually completely engages with the first spur gear 303a, the self-aligning bearing 302b-3 rotates synchronously, and the second transmission roller 302b-1 returns to the horizontal state.

[0076] Preferably, the adjustment range of the self-aligning bearing 302b-3 is 0-10 mm, that is, the maximum floating value of the second transmission roller 302b-1 in the height direction is 10 mm.

[0077] Reference Figures 8 to 11In another embodiment, the lifting plate 302b-2 comprises a first connecting plate 302b-21 connected with the lifting assembly 305, second connecting plates 302b-22 located on both sides of the first connecting plate 302b-21, third connecting plates 302b-23 movably connected with the second connecting plates 302b-22 in the height direction, and elastic members 302b-24 connecting the second connecting plates 302b-22 and the third connecting plates 302b-23. The second transmission roller 302b-1 is rotatably mounted between the two third connecting plates 302b-23.

[0078] Specifically, the first connecting plate 302b-21 extends in a direction parallel to the second transmission roller 302b-1. The second connecting plates 302b-22 are located on both sides of the first connecting plate 302b-21, and the second connecting plates 302b-22 are perpendicular to the first connecting plate 302b-21, i.e., the second connecting plates 302b-22 extend in the direction of the cell piece transmission. The third connecting plates 302b-23 are movably connected with the second connecting plates 302b-22 in the height direction, and the second connecting plates 302b-22 and the third connecting plates 302b-23 are respectively provided with a sliding groove and a sliding block, so as to realize the height adjustment of the third connecting plates 302b-23 relative to the second connecting plates 302b-22.

[0079] The elastic members 302b-24 extend in the height direction, and the connecting ends of the elastic members 302b-24 and the second connecting plates 302b-22 are located above the connecting ends of the elastic members 302b-24 and the third connecting plates 302b-23. Under the action of the pulling force of the elastic members 302b-24, the gravity of the third connecting plates 302b-23 is overcome, and when the pulling force of the elastic members 302b-24 and the gravity of the third connecting plates 302b-23 are equal, the third connecting plates 302b-23 are fixed in position.

[0080] The elastic members 302b-24 and the self-aligning bearing 302b-3 have the same effect, which can solve the problem that the first spur gear 303a and the second spur gear 303b cannot be engaged during the descent of the second transmission roller 302b-1.

[0081] When the lifting assembly 305 drives the second roller shaft assembly 302b to move downward so that the first spur gear 303a and the second spur gear 303b are engaged, the first spur gear 303a and the second spur gear 303b may be in a misaligned state and cannot be engaged in place.

[0082] In this case, when the second spur gear 303b is in contact with the first spur gear 303a, the third connecting plate 302b-23 on the side of the second spur gear 303b moves upward, the elastic member 302b-24 is compressed under stress, and the second transmission roller 302b-1 tilts upward from the end away from the second spur gear 303b to the end where the second spur gear 303b is located. Even if the first spur gear 303a and the second spur gear 303b are in a misaligned state, the second transmission roller 302b-1 can be lowered to the position when the first spur gear 303a and the second spur gear 303b are completely engaged. When the first transmission roller 302a-1 rotates, the second spur gear 303b gradually becomes completely engaged with the first spur gear 303a, the third connecting plate 302b-23 on the side of the second spur gear 303b moves downward, and the elastic member 302b-24 returns to the initial state.

[0083] With reference to Figures 8 to 10 , the third connecting plate 302b-23 is split.

[0084] In this embodiment, a plurality of third connecting plates 302b-23 are arranged on each second connecting plate 302b-22 in the direction of the transmission of the battery piece. Preferably, the number of third connecting plates 302b-23 slidingly connected to each second connecting plate 302b-22 is the same as the number of second transmission rollers 302b-1. That is, one second transmission roller 302b-1 is matched with two third connecting plates 302b-23, so that each second transmission roller 302b-1 can be independently raised and lowered.

[0085] At this time, the elastic member 302b-24 matched with the third connecting plate 302b-23 can also serve the purpose of the self-aligning bearing 302b-3 driving the second transmission roller 302b-1 to "float" during the transmission of the battery piece.

[0086] With the elastic member 302b-24 matched with the third connecting plate 302b-23, when the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 at a certain corresponding position is reduced, the third connecting plate 302b-23 at this position will move upward along the second connecting plate 302b-22 under the pressure, and the elastic member 302b-24 will be compressed under stress, so that the second transmission roller 302b-1 tilts, thereby reducing the pressure on the battery piece at this position and preventing damage to the battery piece.

[0087] It can be understood that during the battery conveying process, the second transmission roller 302b-1 will constantly float under the action of the third connecting plate 302b-23 and the elastic member 302b-24, so as to adjust the distance from the first transmission roller 302a-1 to prevent the battery piece from being crushed. It should be particularly pointed out that during the floating process of the second transmission roller 302b-1, since the floating range is small, the first spur gear 303a and the second spur gear 303b will not be separated.

[0088] With reference to Figure 11 , the third connecting plate 302b-23 is integrated.

[0089] In this embodiment, one third connecting plate 302b-23 is slidingly connected to any second connecting plate 302b-22, that is, one second connecting plate 302b-22 is matched with one third connecting plate 302b-23. The same side end of all the second transmission rollers 302b-1 is connected to the same third connecting plate 302b-23. In this way, all the second transmission rollers 302b-1 are synchronously lifted and lowered.

[0090] It should be particularly pointed out that for the scheme shown in Figures 8 to 11 , the second transmission roller 302b-1 can be rotatably installed between two third connecting plates 302b-23 by using the self-aligning bearing 302b-3 in the scheme shown in Figure 7 , or by using a common bearing.

[0091] In some embodiments, the conveying device further comprises an adjusting member 306. The adjusting member 306 is connected to the lifting plate 302b-2 to finely adjust the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1.

[0092] Specifically, the adjusting member 306 comprises a first connecting part 306a movably connected to the second connecting plate 302b-22 in the height direction, a second connecting part 306b located at the top of the first connecting part 306a, and an adjusting bolt 306c threadedly connected to the second connecting part 306b. The second connecting part 306b is connected to the third connecting plate 302b-23, and the adjusting bolt 306c abuts against the second connecting plate 302b-22.

[0093] The adjusting member 306 is L-shaped, and the first connecting portion 306a and the second connecting portion 306b are perpendicular. The second connecting portion 306b is above the second connecting plate 302b-22. The adjusting bolt 306c extends in the height direction, and the bottom end abuts against the top of the second connecting plate 302b-22, and the top end passes through the second connecting portion 306b and extends upward. The top of the second connecting plate 302b-22 is provided with a limiting hole, and the bottom end of the adjusting bolt 306c is inserted into the limiting hole.

[0094] When it is necessary to adjust the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1, the adjusting bolt 306c is rotated to move the adjusting member 306 upward or downward along the second connecting plate 302b-22, so as to drive the third connecting plate 302b-23 connected with the second connecting portion 306b to move synchronously, and then drive the second transmission roller 302b-1 on the third connecting plate 302b-23 to move synchronously.

[0095] The first connecting portion 306a and the third connecting plate 302b-23 are respectively arranged on opposite sides of the second connecting plate 302b-22. Preferably, the third connecting plate 302b-23 is located on the inner side of the second connecting plate 302b-22, and the first connecting portion 306a is located on the outer side of the second connecting plate 302b-22.

[0096] The first connecting portion 306a is provided with a sliding groove 306a-1 extending in the height direction, and the first connecting plate 302b-22 includes a limiting column 302b-22a located in the sliding groove 306a-1. When the first connecting portion 306a moves up and down along the second connecting plate 302b-22, the limiting column 302b-22a moves relatively along the sliding groove 306a-1.

[0097] The limiting column 302b-22a is a cylinder head hexagonal screw, and the first connecting portion 306a is fastened by the limiting column 302b-22a, so as to fix the adjusting member 306.

[0098] When it is necessary to increase or decrease the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1, first, the limiting nut is rotated to cancel the compression of the adjusting member 306, and then the adjusting bolt 306c is rotated to move the adjusting member 306 upward or downward along the second connecting plate 302b-22, the adjusting member 306 moves upward or downward to drive the third connecting plate 302b-23 and the second transmission roller 302b-1 to move upward or downward, until the second transmission roller 302b-1 and the first transmission roller 302a-1 are adjusted to the appropriate position, and finally the limiting nut is rotated to compress the first connecting part 306a to complete the fixation of the adjusting member 306.

[0099] The distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 is adjusted by the adjusting member 306, which can adapt to the transmission of battery pieces of different thicknesses. At the same time, the transmission pressure between the first transmission roller 302a-1 and the second transmission roller 302b-1 can be adjusted to prevent the battery pieces from being crushed.

[0100] For the scheme that the third connecting plate 302b-23 is split, the number of the adjusting member 306 is the same as the number of the third connecting plate 302b-23, so as to realize the individual adjustment of each second transmission roller 302b-1.

[0101] The second connecting part 306b is connected to the third connecting plate 302b-23 through the elastic member 302b-24. For the scheme that the adjusting member 306 is added, the elastic member 302b-24 is connected to the second connecting part 306b, rather than the second connecting plate 302b-22, so as not to affect the "floating" adjustment of the second transmission roller 302b-1.

[0102] It should be particularly noted that the adjustment of the adjusting member 306 relative to the lifting assembly 305 is fine adjustment, that is, the adjustment under the condition that the first spur gear 303a and the second spur gear 303b are engaged, and the main purpose is to adjust the transmission pressure between the first transmission roller 302a-1 and the second transmission roller 302b-1 to prevent the battery pieces from being crushed.

[0103] The support seat 304 is used for rotatingly mounting the first roller shaft assembly 302a, and the first transmission roller 302a-1 is rotatably mounted at the top of the support seat 304 through bearings 302a-2 at both ends.

[0104] The support base 304 is further provided with a rotating driving element 307 for driving the first roller shaft assembly 302a to rotate.

[0105] When the driving motor is started, the driving shaft is driven to rotate by the belt, and the driving shaft drives the first transmission roller 302a-1 to rotate through the first bevel gear and the second bevel gear, thereby realizing the transmission of the battery piece.

[0106] The lifting assembly 305 comprises a support frame 305a and a driving element 305b located on the support frame 305a, and the second roller shaft assembly 302b is connected to the output end of the driving element 305b. The driving element 305b is connected to the first connecting plate 302b-21. The driving element 305b can be driven by a motor and a module, and drives the second roller shaft assembly 302b to lift.

[0107] The lifting assembly 305 is provided with two groups, which are arranged on the two sides of the second roller shaft assembly 302b. The two driving elements 305b are connected to the opposite sides of the first connecting plate 302b-21, so that the lifting of the second roller shaft assembly 302b is more stable and reliable.

[0108] In summary, the first roller shaft assembly 302a and the second roller shaft assembly 302b are connected in transmission to realize the transmission of the battery piece, which is more efficient and stable, and the second roller shaft assembly 302b is driven by the lifting assembly 305 to move along the height direction, so as to separate the first roller shaft assembly 302a and the second roller shaft assembly 302b.

[0109] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined to form other embodiments which can be understood by those skilled in the art.

[0110] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not used to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A laser-assisted sintering apparatus, characterized by, The application relates to a battery piece reverse voltage applying device, which comprises the following components: a power-on roller assembly (302) comprising a first roller assembly (302a) and a second roller assembly (302b) arranged along a height direction, the first roller assembly (302a) and the second roller assembly (302b) being connected to a positive pole and a negative pole of a power source respectively to apply a reverse voltage to a battery piece; a laser assembly (301) for emitting laser to the battery piece to which the reverse voltage is applied; a transmission assembly (303) comprising a first spur gear (303a) located on the first roller assembly (302a) and a second spur gear (303b) located on the second roller assembly (302b); a lifting assembly (305) for driving the second roller assembly (302b) to move along the height direction so that the second spur gear (303b) is separated from or engaged with the first spur gear (303a).

2. The laser-assisted sintering apparatus of claim 1, wherein: The device further comprises a support base (304) located below the lifting assembly (305), the first roller assembly (302a) comprises a plurality of first transmission rollers (302a-1) rotatably installed on the support base (304), and the first spur gear (303a) is located at an axial end of the first transmission rollers (302a-1).

3. The laser-assisted sintering apparatus of claim 1 or 2, wherein: The second roller assembly (302b) comprises a lifting plate (302b-2) connected to the lifting assembly (305), a plurality of second transmission rollers (302b-1) rotatably installed on the lifting plate (302b-2), and the second spur gear (303b) is located at an axial end of the second transmission rollers (302b-1).

4. The laser-assisted sintering apparatus of claim 3, wherein: The lifting plate (302b-2) comprises a first connecting plate (302b-21) connected to the lifting assembly (305), a second connecting plate (302b-22) located on both sides of the first connecting plate (302b-21), and the second transmission rollers (302b-1) are rotatably installed between the two second connecting plates (302b-22).

5. The laser-assisted sintering apparatus of claim 3, wherein: The lifting plate (302b-2) comprises a first connecting plate (302b-21) connected to the lifting assembly (305), a second connecting plate (302b-22) located on both sides of the first connecting plate (302b-21), a third connecting plate (302b-23) movably connected to the second connecting plate (302b-22) along the height direction, and an elastic member (302b-24) connecting the second connecting plate (302b-22) and the third connecting plate (302b-23), and the second transmission rollers (302b-1) are rotatably installed between the two third connecting plates (302b-23).

6. The laser-assisted sintering apparatus of claim 5, wherein: The elastic member (302b-24) extends along the height direction, and a connecting end of the elastic member (302b-24) and the second connecting plate (302b-22) is located above connecting ends of the elastic member (302b-24) and the third connecting plate (302b-23). The second roller shaft assembly (302b) further comprises self-aligning bearings (302b-3) at both ends of the second transmission roller (302b-1), and the second transmission roller (302b-1) is rotatably installed between the two third connecting plates (302b-23) through the self-aligning bearings (302b-3).

7. The laser-assisted sintering apparatus of claim 4, wherein: The second roller shaft assembly (302b) further comprises self-aligning bearings (302b-3) at both ends of the second transmission roller (302b-1), and the second transmission roller (302b-1) is rotatably installed between the two third connecting plates (302b-23) through the self-aligning bearings (302b-3).

8. The laser-assisted sintering apparatus of claim 7, wherein: The adjustment range of the self-aligning bearings (302b-3) is 0-10mm.

9. The laser-assisted sintering apparatus of claim 1, wherein: The lifting assembly (305) comprises a support frame (305a) and a driving member (305b) on the support frame (305a), and the second roller shaft assembly (302b) is connected to the output end of the driving member (305b).

10. The laser-assisted sintering apparatus of claim 1, wherein: The lifting assembly (305) is provided with a pair of lifting assemblies (305) arranged on both sides of the second roller shaft assembly (302b).

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