Laser-assisted sintering device

Abstract

The utility model provides a laser-assisted sintering device which comprises a power-up roll shaft assembly, a first roll shaft assembly and a second roll shaft assembly which are arranged in the height direction, and the first roll shaft assembly and the second roll shaft assembly are connected to the positive electrode and the negative electrode of a power source respectively so as to apply reverse voltage to a battery piece. 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 first straight gear is meshed with the second straight gear; and the adjusting part is used for adjusting the distance between the first roller shaft assembly and the second roller shaft assembly. According to the utility model, the distance between the first transmission roller and the second transmission roller can be finely adjusted through the adjusting piece, so that the damage of a battery piece caused by overlarge transmission pressure between the first transmission roller and the second transmission roller is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor preparation, in particular to a laser-assisted sintering device. Background Art

[0002] Currently, in the field of solar cell manufacturing equipment, most solar cell sintering processes use roller conveyors to transport solar cells. However, the height spacing between the upper and lower rollers in existing roller conveyors is not adjustable. This can lead to excessive pressure between the upper and lower rollers, potentially damaging the solar cells.

[0003] In view of this, it is necessary to provide a laser-assisted sintering device to solve the above technical problems. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the utility model provides a laser-assisted sintering device, which includes a powered roller assembly, including a first roller assembly and a second roller assembly arranged along the height direction, the first roller assembly and the second roller assembly are respectively connected to the positive pole and the negative pole of the power supply to apply a reverse voltage to the battery cell; a laser assembly, used to emit laser to the battery cell with a reverse voltage applied; a transmission assembly, including a first spur gear located on the first roller assembly and a second spur gear located on the second roller assembly, the first spur gear and the second spur gear being engaged with each other; an adjusting member, used to adjust the spacing between the first roller assembly and the second roller assembly.

[0005] As a further improvement of the present invention, the first roller assembly includes a plurality of first transmission rollers, the second roller assembly includes a lifting plate and a plurality of second transmission rollers movably connected to the lifting plate in a height direction, the first transmission rollers and the second transmission rollers are respectively connected to the positive electrode and the negative electrode of the power supply to apply a reverse voltage to the battery cell;

[0006] The first spur gear is located at the axial end of the first transmission roller, the second spur gear is located at the axial end of the second transmission roller, and the adjusting member is connected to the lifting plate to adjust the distance between the first transmission roller and the second transmission roller.

[0007] As a further improvement of the present invention, the lifting plate includes a first connecting plate, a second connecting plate located on both sides of the first connecting plate, and a third connecting plate slidingly connected to the second connecting plate along the height direction, and the second transmission roller is rotatably connected between the two groups of the third connecting plates.

[0008] As a further improvement of the present invention, the adjusting member includes a first connecting portion movably connected to the second connecting plate along the height direction, a second connecting portion located on the top of the first connecting portion, and the second connecting portion is connected to the third connecting plate.

[0009] As a further improvement of the present invention, the first connecting portion and the third connecting plate are respectively arranged on two opposite sides of the second connecting plate.

[0010] As a further improvement of the present invention, the adjusting member further includes an adjusting bolt threadedly connected to the second connecting portion, and the adjusting bolt is abutted against the second connecting plate.

[0011] As a further improvement of the present invention, the first connecting portion has a sliding groove extending along the height direction, and the second connecting plate includes a limiting column located in the sliding groove.

[0012] As a further improvement of the present invention, the second connecting portion is connected to the third connecting plate via an elastic member.

[0013] As a further improvement of the present invention, the ends on the same side of all the second transmission rollers are connected to the same third connecting plate.

[0014] As a further improvement of the present invention, at least two third connecting plates are slidably connected to the second connecting plate, and the number of the adjusting members is the same as the number of the third connecting plates.

[0015] Beneficial effects of the present invention: The present invention can adjust the distance between the first transmission roller and the second transmission roller through the adjusting member, thereby preventing the battery cell from being damaged due to excessive transmission pressure between the first transmission roller and the second transmission roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the laser-assisted sintering device of the present invention in a transmission state;

[0018] Figure 2 This is a schematic diagram of the laser-assisted sintering device of the present invention in a separated state;

[0019] Figure 3 This is a schematic diagram of the laser assembly-powered roller assembly of the utility model;

[0020] Figure 4 A schematic diagram of the power roller assembly of the utility model being connected to a power source;

[0021] Figure 5This is a schematic diagram of the laser-assisted sintering device of the present invention with a double lifting assembly;

[0022] Figure 6 This is a schematic diagram of the connection between the lifting assembly and the second roller assembly of the utility model;

[0023] Figure 7 This is a schematic diagram of a second roller assembly in one embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of a second roller assembly in another embodiment of the present invention;

[0025] Figure 9 for Figure 8 An exploded schematic diagram of the second roller assembly shown;

[0026] Figure 10 for Figure 8 A schematic diagram showing the second roller assembly in a lifting and lowering adjustment state;

[0027] Figure 11 This is a schematic diagram of a second roller assembly in another embodiment of the present invention;

[0028] Figure 12 This is a schematic diagram of the second transmission roller of the present utility model;

[0029] Figure 13 A schematic diagram of the adjusting member of the present utility model;

[0030] Figure 14 This is a schematic diagram of the connection between the first roller assembly and the support seat of the utility model;

[0031] Figure 15 for Figure 8 A side view of the second roller assembly in a lifting and lowering adjustment state;

[0032] Figure 16 This is a schematic diagram of the second transmission roller of the present invention in a horizontal state;

[0033] Figure 17 This is a schematic diagram of the second transmission roller of the present invention in a "floating" adjustment state;

[0034] Figure 18 This is the light spot scanning path diagram of the utility model;

[0035] Figure 19 The light spot of this utility model is in accordance with Figure 18 The scanning path shown is a schematic diagram of the movement trajectory and the scanned area on the battery cell during cyclic scanning. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0040] like Figures 1 to 19 As shown in FIG, the laser assisted sintering device provided by the present invention includes a laser assembly 301 , a powered roller assembly 302 , a transmission assembly 303 , a support base 304 and a lifting assembly 305 .

[0041] The laser assembly 301 is used to emit laser light toward the cell to which a reverse voltage is applied.

[0042] The power roller assembly 302 applies a reverse voltage to the cell while transporting it. The power roller assembly 302 includes a first roller assembly 302a and a second roller assembly 302b arranged in a height direction, with the cell positioned between the first roller assembly 302a and the second roller assembly 302b. The first roller assembly 302a and the second roller assembly 302b are connected to the positive and negative poles of a power source, respectively, to apply a reverse voltage to the cell while transporting it.

[0043] The transmission assembly 303 is used to realize transmission between the first roller assembly 302a and the second roller assembly 302b.

[0044] The support base 304 is used to install the first roller assembly 302a.

[0045] The lifting assembly 305 is used to drive the second roller assembly 302b to move in a height direction so as to move toward or away from the first roller assembly 302a.

[0046] Specifically, the laser light emitted by the laser assembly 301 is located within the transmission area of ​​the powered roller assembly 302, thereby forming a laser radiation zone within the transmission area of ​​the powered roller assembly 302. When the laser light is irradiated onto the solar cell with a reverse voltage applied, an induced current is generated when the solar cell passes through the laser radiation zone. When the current flows through areas with high contact resistance, a higher temperature is generated, which acts like sintering, thereby reducing the contact resistance.

[0047] The laser assembly 301 includes a laser source for emitting laser light and a shaping assembly for shaping the laser light into a square laser spot. The laser assembly 301 also includes a galvanometer and a field lens. The galvanometer receives the shaped laser spot and adjusts the scanning position, scanning amplitude, and scanning speed of the laser spot according to scanning parameters. The field lens is fixedly connected to the galvanometer and focuses the laser spot on the surface of the cell. The square laser spot can scan and irradiate the entire cell while the cell is moving.

[0048] The first roller assembly 302a and the second roller assembly 302b of the power roller assembly 302 are symmetrically arranged along the center line of the height direction of the power roller assembly 302. The first roller assembly 302a contacts the lower surface of the battery cell, and the second roller assembly 302b contacts the upper surface of the battery cell.

[0049] The first roller assembly 302a includes a plurality of first transmission rollers 302a-1 rotatably mounted on the support base 304. The plurality of first transmission rollers 302a-1 are arranged along the direction of cell transport. Both ends of the first transmission rollers 302a-1 are rotatably mounted on the top of the support base 304 via bearings 302a-2.

[0050] 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 in the height direction, thereby driving the second transmission roller 302b-1 on the lifting plate 302b-2 to move in the height direction, thereby adjusting the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1.

[0051] The number of second transmission rollers 302b-1 is the same as the number of first transmission rollers 302a-1, and several second transmission rollers 302b-1 are arranged along the direction of transport of the battery cells. The first transmission rollers 302a-1 and the second transmission rollers 302b-1 are arranged in a one-to-one correspondence, and the height projection of the second transmission roller 302b-1 on the first transmission roller 302a-1 completely overlaps with the first transmission roller 302a-1. The first transmission rollers 302a-1 and the second transmission rollers 302b-1 are respectively connected to the positive and negative poles of a power source to apply a reverse voltage to the battery cells while transporting the battery cells.

[0052] In this embodiment, the first roller assembly 302a is located below the second roller assembly 302b, with the first transmission roller 302a-1 being the active roller and the second transmission roller 302b-1 being the passive roller. The first transmission roller 302a-1 drives the second transmission roller 302b-1 to rotate via the transmission assembly 303, thereby transporting the battery cell located between the first and second transmission rollers 302a-1, 302b-1.

[0053] It can be understood that the laser radiation area is located between two adjacent first transmission rollers 302a-1, that is, the laser component 301 emits laser between the two first transmission rollers 302a-1, so that the battery cell can be scanned in its entirety during the battery cell transmission process.

[0054] Reference Figures 18 and 19 The laser emitted by the laser assembly 301 forms a light spot on the battery cell, and the galvanometer is used to make the light spot perform multiple cyclic scans along a preset scanning path.

[0055] In the transverse direction perpendicular to the front-back direction, the two sides of the battery sheet are the first side and the second side respectively. Figure 18 The middle is the left and right direction, Figure 18 In the embodiment, the left side of the battery cell is the first side, and the right side is the second side. In other embodiments, the right side of the battery cell may be the first side, and the left side may be the second side.

[0056] The scanning path includes a first path S1 that moves from a first point O1 on the first side to a second point O2 on the second side, a second path S2 that moves backward from the second point O2 to a third point O3, and a third path S3 that moves from the third point O3 back to the first side. The scanning path forms a closed loop, with the first point O1 serving as both the starting and ending points of the scanning path. This means that after the illumination point moves from the second side to the first side along the third path S3, it returns to the first point O1.

[0057] The first path S1 extends obliquely from the rear to the front or is parallel to the transverse direction, and the third path S3 extends obliquely from the rear to the front.

[0058] In one specific embodiment, the third path S3 moves from the third point O3 to the fourth point O4 on the first side of the cell, and the scanning path further includes a fourth path S4 moving backward from the fourth point O4 to the first point O1. Thus, the scanning path generally forms a figure-eight or hourglass shape, and the light spot cyclically scans along the figure-eight or hourglass-shaped scanning path.

[0059] Specifically, the first path S1 extends obliquely from the back to the front. When the light spot moves along the first path S1, it not only moves in the transverse direction from the first side to the second side, but also moves forward a certain distance in the front-to-back direction. As described above, the third path S3 extends obliquely from the back to the front. When the light spot moves along the third path S3, it not only moves in the transverse direction from the second side to the first side, but also moves forward a certain distance in the front-to-back direction.

[0060] The distance between the first point O1 and the second point O2 in the front-to-back direction, the distance between the third point O3 and the fourth point O4 in the front-to-back direction, and the distance between the second point O2 and the third point O3 in the front-to-back direction are all equal to H. The distance the light spot moves forward when moving along the first path S1 is H, and the distance it moves forward when moving along the third path S3 is also H.

[0061] It can be imagined that in the above case, the distance between the fourth point O4 and the first point O1 in the front-to-back direction is also equal to H. In the process of the light spot completing one scan, the distance the battery cell moves forward is equal to 2H.

[0062] In this embodiment, both ends of the first path S1 and both ends of the third path S3 extend beyond the battery cell in the lateral direction. In this way, when the light spot moves along the first path S1 and the third path S3, it can completely scan the battery cell in the lateral direction. The light spot scans multiple times in a cycle according to the scanning path, and the scanned area can cover the battery cell.

[0063] 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-to-back direction is not less than 10.

[0064] 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 scanned by the light spot 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 A schematic diagram of the moving track and scanned area of the light spot on the battery piece when the light spot scans according to the scanning path of the embodiment.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Referring to Figure 7In one embodiment, the lifting plate 302b-2 includes a first connecting plate 302b-21 connected to 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.

[0069] Specifically, the first connecting plate 302b-21 extends parallel to the second transmission roller 302b-1. Two second connecting plates 302b-22 are located on either side of the first connecting plate 302b-21, and the second connecting plates 302b-22 are perpendicular to the first connecting plate 302b-21, that is, the second connecting plates 302b-22 extend along the direction of cell transport.

[0070] The second transmission roller 302b-1 is rotatably mounted between the two second connecting plates 302b-22 via self-aligning bearings 302b-3 at both ends. The self-aligning bearings 302b-3 have a certain rotation angle, so that the second transmission roller 302b-1 can continue to rotate even at a certain tilt angle.

[0071] Due to tolerances, the cross-section of any location on the first or second transmission roller 302a-1, 302b-1, is not a perfectly circular shape. Due to these tolerances, the spacing between the first and second transmission rollers 302a-1, 302b-1, is not constant. Consequently, during the battery cell transport process, if the spacing between the first and second transmission rollers 302a-1, 302b-1, decreases at a specific location, the pressure on the battery cell at that location increases, potentially damaging the cell.

[0072] When the self-aligning bearing 302b-3 is used, when the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 at a corresponding position decreases, the self-aligning bearing 302b-3 rotates under the pressure at that position, causing the second transmission roller 302b-1 to tilt, thereby reducing the pressure on the battery cell at that position and preventing damage to the battery cell.

[0073] Reference Figure 16 In a normal state, 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. Figure 17When the self-aligning bearing 302b-3 rotates, causing the second transmission roller 302b-1 to tilt, 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.

[0074] It is understood that during battery transport, the second transmission roller 302b-1 continuously "floats" under the action of the self-aligning bearing 302b-3, adjusting its distance from the first transmission roller 302a-1 to prevent crushing of the battery cells. It is important to note that, due to its limited floating range, the floating of the second transmission roller 302b-1 does not cause separation between the first and second spur gears 303a, 303b.

[0075] The self-aligning bearing 302b-3 can also solve the problem that the first spur gear 303a and the second spur gear 303b cannot engage with each other during the descending process of the second transmission roller 302b-1.

[0076] When the lifting assembly 305 drives the second roller 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 misaligned and unable to engage with each other.

[0077] In this situation, when the second spur gear 303b contacts the first spur gear 303a, the self-aligning bearing 302b-3 rotates, causing the second transmission roller 302b-1 to tilt upward from the end away from the second spur gear 303b toward the end where the second spur gear 303b is located. Even if the first and second spur gears 303a, 303b are misaligned, the second transmission roller 302b-1 can descend to a position where the first and second spur gears 303a, 303b are fully engaged. As the first transmission roller 302a-1 rotates, the second spur gear 303b gradually fully engages with the first spur gear 303a, the self-aligning bearing 302b-3 rotates synchronously, and the second transmission roller 302b-1 returns to a horizontal position.

[0078] Preferably, the adjustment range of the self-aligning bearing 302b-3 is 0-10mm, that is, the maximum floating value of the second transmission roller 302b-1 in the height direction is 10mm.

[0079] 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.

[0080] 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 battery 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 sliding grooves and sliding blocks, so as to realize the height adjustment of the third connecting plates 302b-23 relative to the second connecting plates 302b-22.

[0081] 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.

[0082] 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.

[0083] When the lifting assembly 305 drives the second roller shaft assembly 302b to move downward to make the first spur gear 303a and the second spur gear 303b engage, the first spur gear 303a and the second spur gear 303b may be in a misaligned state and cannot be engaged in place.

[0084] In this case, when the second spur gear 303b contacts the first spur gear 303a, the third connecting plate 302b-23 located on the side of the second spur gear 303b moves upward, compressing the elastic member 302b-24. The second transmission roller 302b-1 tilts upward from the end away from the second spur gear 303b toward the end of the second spur gear 303b. Even if the first spur gear 303a and the second spur gear 303b are misaligned, the second transmission roller 302b-1 can descend to a position where the first and second spur gears 303a, 303b are fully engaged. As the first transmission roller 302a-1 rotates, the second spur gear 303b gradually fully engages with the first spur gear 303a. The third connecting plate 302b-23 located on the side of the second spur gear 303b moves downward, and the elastic member 302b-24 returns to its initial state.

[0085] Reference Figures 8 to 10 , the third connecting plate 302b-23 is a split type.

[0086] In this embodiment, a plurality of third connecting plates 302b-23 are spaced apart along the cell transport direction on any second connecting plate 302b-22. Preferably, the number of third connecting plates 302b-23 slidably connected to any second connecting plate 302b-22 is equal to the number of second transmission rollers 302b-1. That is, one second transmission roller 302b-1 is paired with two third connecting plates 302b-23. This allows each second transmission roller 302b-1 to be raised and lowered independently.

[0087] At this time, the elastic member 302b-24 in combination with the third connecting plate 302b-23 can also enable the self-aligning bearing 302b-3 to drive the second transmission roller 302b-1 to perform "floating" adjustment during the transmission of the battery cell.

[0088] The elastic member 302b-24 is used in combination 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 corresponding position decreases, the third connecting plate 302b-23 will move upward along the second connecting plate 302b-22 under the pressure at that position, and the elastic member 302b-24 will be compressed, so that the second transmission roller 302b-1 will tilt, thereby reducing the pressure on the battery cell at that position and preventing damage to the battery cell.

[0089] It is understood that during battery transport, the second transmission roller 302b-1 continuously "floats" under the action of the third connecting plate 302b-23 and the elastic member 302b-24, adjusting its distance from the first transmission roller 302a-1 to prevent crushing of the battery cells. It is important to note that, due to its limited floating range, the floating of the second transmission roller 302b-1 does not cause separation between the first and second spur gears 303a, 303b.

[0090] Reference Figure 11 , the third connecting plate 302b-23 is integrated.

[0091] In this embodiment, each second connecting plate 302b-22 is slidably connected to a third connecting plate 302b-23, i.e., one second connecting plate 302b-22 is paired with one third connecting plate 302b-23. The same-side ends of all second transmission rollers 302b-1 are connected to the same third connecting plate 302b-23. Thus, all second transmission rollers 302b-1 rise and fall synchronously.

[0092] It should be noted that for Figures 8 to 11 In the embodiment shown, the second transmission roller 302b-1 can be Figure 7 The self-aligning bearing 302b-3 in the illustrated embodiment is rotatably mounted between the two sets of the third connecting plates 302b-23. Alternatively, an ordinary bearing may be rotatably mounted between the two sets of the third connecting plates 302b-23.

[0093] In some embodiments, the transmission device further includes an adjusting member 306. The adjusting member 306 is connected to the lifting plate 302b-2 and is used to fine-tune the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1.

[0094] Specifically, the adjusting member 306 includes a first connecting portion 306a movably connected to the second connecting plate 302b-22 along the height direction, a second connecting portion 306b located on top of the first connecting portion 306a, and an adjusting bolt 306c threadedly connected to the second connecting portion 306b. The second connecting portion 306b is connected to the third connecting plate 302b-23, and the adjusting bolt 306c abuts against the second connecting plate 302b-22.

[0095] The adjustment member 306 is L-shaped, with the first connecting portion 306a and the second connecting portion 306b perpendicular to each other. The second connecting portion 306b is located above the second connecting plate 302b-22. The adjustment bolt 306c extends in the height direction, with its bottom end abutting against the top of the second connecting plate 302b-22 and its top end passing through the second connecting portion 306b and extending upward. A retaining hole is provided at the top of the second connecting plate 302b-22, into which the bottom end of the adjustment bolt 306c is inserted.

[0096] 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 so that the adjusting member 306 moves upward or downward along the second connecting plate 302b-22, thereby driving the third connecting plate 302b-23 connected to the second connecting part 306b to move synchronously, and then driving the second transmission roller 302b-1 on the third connecting plate 302b-23 to move synchronously.

[0097] The first connecting portion 306a and the third connecting plate 302b-23 are respectively provided 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.

[0098] 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 post 302b-22a located within the sliding groove 306a-1. When the first connecting portion 306a moves up and down along the second connecting plate 302b-22, the limiting post 302b-22a moves relative to the sliding groove 306a-1.

[0099] The limiting column 302 b - 22 a is a cylindrical head hexagon socket screw, and the first connecting portion 306 a is fastened through the limiting column 302 b - 22 a to fix the adjusting member 306 .

[0100] 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 rotate the limit nut to cancel the pressure on the adjusting member 306, and then rotate the adjusting bolt 306c to make the adjusting member 306 move up or down along the second connecting plate 302b-22. The upward or downward movement of the adjusting member 306 drives the third connecting plate 302b-23 and the second transmission roller 302b-1 to move up or down until the second transmission roller 302b-1 and the first transmission roller 302a-1 are adjusted to the appropriate position. Finally, rotate the limit nut to tighten the first connecting part 306a to complete the fixation of the adjusting member 306.

[0101] The adjustment member 306 adjusts the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 to accommodate the transport of battery cells of varying thicknesses. The transmission pressure between the first transmission roller 302a-1 and the second transmission roller 302b-1 can also be adjusted to prevent damage to the battery cells.

[0102] For the solution in which the third connecting plate 302b-23 is a split type, the number of the adjusting members 306 is the same as the number of the third connecting plates 302b-23, thereby achieving separate adjustment of each of the second transmission rollers 302b-1.

[0103] The second connecting portion 306b is connected to the third connecting plate 302b-23 via the elastic member 302b-24. In the solution with the adjustment member 306, the elastic member 302b-24 is connected to the second connecting portion 306b instead of the second connecting plate 302b-22, thereby not affecting the "floating" adjustment of the second driving roller 302b-1.

[0104] It should be noted that the adjustment of the adjustment member 306 relative to the lifting assembly 305 is fine-tuning, that is, the adjustment does not affect the meshing state of the first spur gear 303a and the second spur gear 303b. 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 cells from being crushed.

[0105] The support base 304 is used to be rotatably mounted on the first roller assembly 302a, and the first transmission roller 302a-1 is rotatably mounted on the top of the support base 304 through bearings 302a-2 at both ends.

[0106] A rotational drive member 307 is also mounted on the support base 304. This member is used to rotate the first roller assembly 302a. The rotational drive member 307 comprises a drive motor and a drive shaft. The output end of the drive motor is connected to the drive shaft via a belt. The drive shaft extends along the arrangement direction of the first transmission rollers 302a-1. First bevel gears are interspersed on the drive shaft. The first transmission rollers 302a-1 are equipped with second bevel gears that mesh with the first bevel gears.

[0107] When the driving motor is started, the driving shaft is driven to rotate through 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 cell.

[0108] The lifting assembly 305 includes a support frame 305a and a driving member 305b located on the support frame 305a. The second roller assembly 302b is connected to the output end of the driving member 305b. The driving member 305b is connected to the first connecting plate 302b-21. The driving member 305b can be driven by a motor and a module, and the driving member 305b drives the second roller assembly 302b to rise and fall.

[0109] The lifting assembly 305 is provided with two groups, which are respectively arranged on both sides of the second roller assembly 302b. The two driving members 305b are connected to the opposite sides of the first connecting plate 302b-21, so that the lifting of the second roller assembly 302b is more stable and reliable.

[0110] In summary, the present invention realizes the transmission of battery cells through the first roller assembly 302a and the second roller assembly 302b connected by transmission, which is more efficient and stable, and drives the second roller assembly 302b to move in the height direction through the lifting assembly 305 to facilitate the separation of the first roller assembly 302a and the second roller assembly 302b.

[0111] It should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0112] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent embodiments or changes that do not depart from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser-assisted sintering device, characterized in that: include: The powered roller assembly (302) comprises a first roller assembly (302a) and a second roller assembly (302b) arranged in a height direction, wherein the first roller assembly (302a) and the second roller assembly (302b) are respectively connected to a positive electrode and a negative electrode of a power source to apply a reverse voltage to the battery cell; A laser assembly (301) for emitting laser light toward a cell to which a 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), wherein the first spur gear and the second spur gear (303b) are meshed with each other; The adjusting member (306) is used to adjust the distance between the first roller assembly (302a) and the second roller assembly (302b).

2. The laser-assisted sintering device according to claim 1, characterized in that: The first roller assembly (302a) includes a plurality of first transmission rollers (302a-1), the second roller assembly (302b) includes a lifting plate (302b-2) and a plurality of second transmission rollers (302b-1) movably connected to the lifting plate (302b-2) in a height direction, the first transmission rollers (302a-1) and the second transmission rollers (302b-1) are respectively connected to the positive electrode and the negative electrode of a power source to apply a reverse voltage to the battery cell; 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), and the adjustment member (306) is connected to the lifting plate (302b-2) to adjust the distance between the first transmission roller (302a-1) and the second transmission roller (302b-1).

3. The laser-assisted sintering device according to claim 2, characterized in that: The lifting plate (302b-2) includes a first connecting plate (302b-21), second connecting plates (302b-22) located on both sides of the first connecting plate (302b-21), and a third connecting plate (302b-23) slidably connected to the second connecting plate (302b-22) along the height direction, and the second transmission roller (302b-1) is rotatably connected between the two groups of the third connecting plates (302b-23).

4. The laser-assisted sintering device according to claim 3, characterized in that: The adjusting member (306) includes a first connecting portion (306a) movably connected to the second connecting plate (302b-22) along the height direction, a second connecting portion (306b) located on the top of the first connecting portion (306a), and the second connecting portion (306b) is connected to the third connecting plate (302b-23).

5. The laser-assisted sintering device according to claim 4, characterized in that: The first connecting portion (306a) and the third connecting plate (302b-23) are respectively arranged on two opposite sides of the second connecting plate (302b-22).

6. The laser-assisted sintering device according to claim 4, characterized in that: The adjusting member (306) further includes an adjusting bolt (306c) threadedly connected to the second connecting portion (306b), and the adjusting bolt (306c) abuts against the second connecting plate (302b-22).

7. The laser-assisted sintering device according to claim 4, characterized in that: The first connecting portion (306a) has a sliding groove (306a-1) extending in a height direction, and the second connecting plate (302b-22) includes a limiting column (302b-22a) located in the sliding groove (306a-1).

8. The laser-assisted sintering device according to claim 4, characterized in that: The second connecting portion (306b) is connected to the third connecting plate (302b-23) via an elastic member (302b-24).

9. The laser-assisted sintering device according to claim 3, characterized in that: The ends on the same side of all the second transmission rollers (302b-1) are connected to the same third connecting plate (302b-23).

10. The laser-assisted sintering device according to claim 3, characterized in that: At least two third connecting plates (302b-23) are slidably connected to the second connecting plate (302b-22), and the number of the adjusting members (306) is the same as the number of the third connecting plates (302b-23).

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