Laser-assisted sintering device

Abstract

The invention provides a laser-assisted sintering device which comprises a power-up roll shaft assembly used for transmitting a battery piece and applying reverse voltage to the 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 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 battery piece conveying device, battery pieces are conveyed through the first roller shaft assembly and the second roller shaft assembly which are in transmission connection, conveying is more efficient and stable, and the lifting assembly drives the second roller shaft assembly to move in the height direction so that the first roller shaft assembly and the second roller shaft assembly can be conveniently separated.

Description

Technical Field

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

[0002] At present, in the field of battery cell manufacturing equipment, laser-assisted sintering devices are mostly used to transfer battery cells during the battery cell sintering process. Traditional laser-assisted sintering devices are mostly single-roller, with only a transfer roller set at the bottom of the battery cell to transfer the battery cell. Single-roller transmission easily causes the battery cell to tilt and has poor stability.

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

[0004] In order to achieve the above-mentioned purpose, the present invention provides a laser-assisted sintering device, including a powered roller assembly, comprising a first roller assembly and a second roller assembly arranged in a height direction, wherein the first roller assembly and the second roller assembly are respectively connected to a positive electrode and a negative electrode of a power source to apply a reverse voltage to a battery cell; a laser assembly for emitting a laser to the battery cell to which a reverse voltage is applied; a transmission assembly, comprising a first spur gear located on the first roller assembly and a second spur gear located on the second roller assembly; and a lifting assembly for driving the second roller assembly to move in a height direction so that the second spur gear is separated from or meshed with the first spur gear.

[0005] As a further improvement of the present invention, it also includes a support base located below the lifting assembly, the first roller shaft assembly includes a plurality of first transmission rollers rotatably mounted on the support base, and the first spur gear is located at the axial end of the first transmission roller.

[0006] As a further improvement of the present invention, the second roller shaft assembly includes a lifting plate connected to the lifting assembly, a plurality of second transmission rollers rotatably mounted 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 present invention, the lifting plate includes a first connecting plate connected to the lifting assembly and second connecting plates 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 present invention, the lifting plate includes a first connecting plate connected to the lifting assembly, a second connecting plate located on both sides of the first connecting plate, a third connecting plate movably connected to the second connecting plate along the height direction, and 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 present invention, the elastic member extends along the height direction, and the connection end of the elastic member and the second connecting plate is located above the connection end of the elastic member and the third connecting plate.

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

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

[0012] As a further improvement of the present invention, the lifting assembly includes a support frame and a driving member located on the support frame, and the second roller assembly is connected to an output end of the driving member.

[0013] As a further improvement of the present invention, a pair of lifting assemblies are provided, which are arranged on both sides of the second roller assembly.

[0014] Beneficial effects of the present invention: The present invention realizes the transmission of battery cells through the first roller assembly and the second roller assembly connected by transmission, which is more efficient and stable, and drives the second roller assembly to move in the height direction through the lifting assembly to facilitate the separation of the first roller assembly and the second roller assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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:

[0016] Figure 1 It is a schematic diagram of the laser-assisted sintering device of the present invention in a transmission state;

[0017] Figure 2 is a schematic diagram of the laser-assisted sintering device of the present invention in a separated state;

[0018] Figure 3 It is a schematic diagram of the laser assembly-powered roller assembly of the present invention;

[0019] Figure 4 A schematic diagram of the power roller assembly of the present invention being connected to a power source;

[0020] Figure 5 It is a schematic diagram of the laser-assisted sintering device of the present invention with a double lifting assembly;

[0021] Figure 6This is a schematic diagram of the connection between the lifting assembly and the second roller assembly of the present invention;

[0022] Figure 7 is a schematic diagram of a second roller assembly in one embodiment of the present invention;

[0023] Figure 8 A schematic diagram of a second roller assembly in another embodiment of the present invention;

[0024] Fig. 9 for Figure 8 An exploded schematic diagram of the second roller assembly shown;

[0025] Fig.10 for Figure 8 A schematic diagram showing the second roller assembly being in a lifting and lowering adjustment state;

[0026] Fig.11 A schematic diagram of a second roller assembly in another embodiment of the present invention;

[0027] Fig.12 is a schematic diagram of the second transmission roller of the present invention;

[0028] Fig.13 is a schematic diagram of the adjusting member of the present invention;

[0029] Fig.14 This is a schematic diagram of the connection between the first roller assembly and the support seat of the present invention;

[0030] Fig.15 for Figure 8 A side schematic diagram of the second roller assembly in a lifting and lowering adjustment state;

[0031] Fig.16 It is a schematic diagram of the second transmission roller of the present invention being in a horizontal state;

[0032] Fig.17 It is a schematic diagram of the second transmission roller of the present invention being in a "floating" adjustment state;

[0033] Fig.18 It is the light spot scanning path diagram of the present invention;

[0034] Fig.19 The light spot of the present invention is Fig.18 The scanning path shown is a schematic diagram of the movement trajectory on the battery cell and the scanned area when the scanning path is scanned in a loop. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "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, rather than indicating or implying 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.

[0038] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" 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.

[0039] like Figures 1 to 19 As shown, the laser assisted sintering device provided by the present invention includes a laser component 301, a powered roller component 302, a transmission component 303, a support seat 304 and a lifting component 305.

[0040] The laser assembly 301 is used to emit laser light to the battery cell to which a reverse voltage is applied.

[0041] The power-on roller assembly 302 applies a reverse voltage to the battery cell while transmitting the battery cell. The power-on roller assembly 302 includes a first roller assembly 302a and a second roller assembly 302b arranged in the height direction, and the battery cell 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 a reverse voltage to the battery cell while transmitting the battery cell.

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

[0043] The support seat 304 is used to install 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 so as to move toward or away from the first roller assembly 302a.

[0045] Specifically, the laser emitted by the laser assembly 301 is located in the transmission area of ​​the powered roller assembly 302, thereby forming a laser radiation area in the transmission area of ​​the powered roller assembly 302. The laser is radiated on the battery cell to which the reverse voltage is applied, and the battery cell generates an induced current when passing through the laser radiation area. When the current flows through the area with high contact resistance, a higher temperature is generated, which plays a role similar to sintering, thereby reducing the contact resistance.

[0046] 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 mirror. 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 mirror is fixedly connected to the galvanometer and is used to focus the laser spot on the surface of the battery cell. The square laser spot can scan and irradiate the entire battery cell during the movement of the battery cell.

[0047] The first roller assembly 302a and the second roller assembly 302b of the power-on roller assembly 302 are symmetrically arranged along the midline of the height direction of the power-on roller assembly 302. The first roller assembly 302a contacts the lower surface of the battery sheet, and the second roller assembly 302b contacts the upper surface of the battery sheet.

[0048] The first roller assembly 302a includes a plurality of first transmission rollers 302a-1 rotatably mounted on the support base 304, and the plurality of first transmission rollers 302a-1 are arranged along the transmission direction of the battery sheet. Both ends of the first transmission rollers 302a-1 are rotatably mounted on the top of the support base 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 plate 302b-2 is driven by the lifting assembly 305 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, so as to adjust the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1.

[0050] The number of the second transmission rollers 302b-1 and the first transmission rollers 302a-1 is the same, and a plurality of the second transmission rollers 302b-1 are arranged along the transmission direction of the battery cell. The first transmission rollers 302a-1 and the second transmission rollers 302b-1 are arranged one by one, and the projection of the second transmission roller 302b-1 on the first transmission roller 302a-1 along the height direction completely overlaps with the first transmission roller 302a-1. The first transmission roller 302a-1 and the second transmission roller 302b-1 are respectively connected to the positive and negative electrodes of the power supply to apply a reverse voltage to the battery cell while transmitting the battery cell.

[0051] In this embodiment, the first roller assembly 302a is located below the second roller assembly 302b, and the first transmission roller 302a-1 is an active roller, and the second transmission roller 302b-1 is a driven roller. The first transmission roller 302a-1 drives the second transmission roller 302b-1 to rotate through the transmission assembly 303, thereby transmitting the battery sheet between the first transmission roller 302a-1 and the second transmission roller 302b-1.

[0052] 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.

[0053] Reference Figure 18 to Figure 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 cycles of scanning along a preset scanning path.

[0054] In the transverse direction perpendicular to the front-rear direction, the two sides of the battery sheet are respectively the first side and the second side, and the transverse direction is Fig.18 The middle is the left and right direction, Fig.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.

[0055] The scanning path includes a first path S1 moving from a first point O1 on the first side to a second point O2 on the second side, a second path S2 moving backward from the second point O2 to a third point O3, and a third path S3 moving from the third point O3 to the first side. The scanning path is a closed-loop path, and the first point O1 is the starting point and the end point of the scanning path, that is, after the irradiation point moves from the second side to the first side along the third path S3, it will return to the first point O1.

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

[0057] In a specific embodiment, the third path S3 moves from the third point O3 to the fourth point O4 on the first side of the battery cell, and the scanning path also includes a fourth path S4 moving backward from the fourth point O4 to the first point O1. In this way, the scanning path is generally in the shape of an 8 or an hourglass, and the light spot is cyclically scanned along the scanning path in the shape of an 8 or an hourglass.

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

[0059] 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 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 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.

[0061] 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. Thus, 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 in a cycle multiple times along the scanning path, and the scanned area can cover the battery cell.

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

[0063] The lengths of the first path S1 and the third path S3 are equal, and the lengths of the second path S2 and the fourth path S4 are also equal. If the cell moves forward at a uniform speed, the distance 2H that the cell moves forward during the process of the light spot completing one scan can be divided into: when the light spot moves from the first point O1 to the second point O2 along the first path S1, the cell moves forward by a distance H, and when the light spot moves from the third point O3 to the fourth point O4 along the third path S3, the cell moves forward by a distance H. Since the distance that the light spot moves forward when it moves along the first path S1 is H, and the distance that it moves forward when it moves along the third path S3 is H, therefore, when the light spot moves along the first path S1 and the third path S3, the cell moves synchronously with the light spot. In this way, when the light spot scans cyclically according to the scanning path, the several strip areas that the light spot scans on the cell are parallel to the horizontal direction and cover the cell, and the light spot can basically scan all areas of the cell. Fig.19 It is a schematic diagram of the moving track and the scanned area of ​​the light spot on the battery cell when the light spot is scanned according to the scanning path of this embodiment.

[0064] It can be understood that 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 may also be slightly greater than or slightly less than the size H of the light spot in the front-to-back direction. The transmission assembly 303 includes 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.

[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. The second roller shaft assembly 302b is driven downward by the lifting assembly 305 until the first spur gear 303a and the second spur gear 303b are meshed, and the rotation of the first transmission roller 302a-1 can synchronously drive the second transmission roller 302b-1 to rotate. The second roller shaft assembly 302b is driven upward by the lifting assembly 305, so that the first spur gear 303a and the second spur gear 303b are separated, and the battery cell fragments between the first transmission roller 302a-1 and the second transmission roller 302b-1 can be taken out.

[0066] Reference 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 installed 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, that is, the second connecting plates 302b-22 extend in the battery cell transmission direction.

[0068] 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 thereof. The self-aligning bearings 302b-3 have a certain rotation angle, so that the second transmission roller 302b-1 can keep rotating at a certain tilt angle.

[0069] Due to the existence of tolerance, the cross-section of any position of the first transmission roller 302a-1 or the second transmission roller 302b-1 is not a completely regular circle. Affected by the tolerance of the two, the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 is not constant. In this way, during the transmission of the battery cell, when the distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 at a corresponding position decreases, the pressure on the battery cell at this position will increase, which may cause damage to the battery cell.

[0070] 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 is reduced, the self-aligning bearing 302b-3 rotates under the pressure at that position, so that the second transmission roller 302b-1 tilts, thereby reducing the pressure on the battery cell at that position and preventing damage to the battery cell.

[0071] Reference Fig.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. Fig.17When the self-aligning bearing 302b-3 rotates, the second transmission roller 302b-1 tilts, and 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 is understandable that, during the battery transmission process, the second transmission roller 302b-1 will continuously "float" under the action of the self-aligning bearing 302b-3, and adjust the distance with the first transmission roller 302a-1 to prevent the battery cells from being crushed. It should be particularly noted that, during the floating process of the second transmission roller 302b-1, since its floating range is very small, it will not cause the separation of the first spur gear 303a and the second spur gear 303b.

[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 mesh during the descending process of the second transmission roller 302b-1.

[0074] 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 meshed, it may happen that the first spur gear 303a and the second spur gear 303b are in a misaligned state and cannot mesh 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 tilts, 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 where the first spur gear 303a and the second spur gear 303b are fully meshed. When the first transmission roller 302a-1 rotates, the second spur gear 303b gradually fully meshes 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 state.

[0076] 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.

[0077] Reference Figures 8 to 11In another embodiment, the lifting plate 302b-2 includes a first connecting plate 302b-21 connected to the lifting assembly 305, second connecting plates 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. The second transmission roller 302b-1 is rotatably installed 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. 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, that is, the second connecting plates 302b-22 extend in the battery cell transmission direction. The third connecting plate 302b-23 is slidably connected to the second connecting plate 302b-22 in the height direction, and the second connecting plate 302b-22 and the third connecting plate 302b-23 are respectively provided with a slide groove and a slider, so as to achieve the height adjustment of the third connecting plate 302b-23 relative to the second connecting plate 302b-22.

[0079] The elastic member 302b-24 extends in the height direction, and the connection end of the elastic member 302b-24 and the second connection end 302b-22 is located above the connection end of the elastic member 302b-24 and the third connection plate 302b-23. Under the pulling force of the elastic member 302b-24, the gravity of the third connection plate 302b-23 is overcome, and when the pulling force of the elastic member 302b-24 and the gravity of the third connection plate 302b-23 are equal, the position of the third connection plate 302b-23 is fixed.

[0080] The elastic member 302b-24 and the self-aligning bearing 302b-3 have the same function and can solve the problem that the first spur gear 303a and the second spur gear 303b cannot mesh during the descending process of the second transmission roller 302b-1.

[0081] 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 meshed, it may happen that the first spur gear 303a and the second spur gear 303b are in a misaligned state and cannot mesh in place.

[0082] 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 where the second spur gear 303b is located moves upward, the elastic member 302b-24 is compressed, 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 where the first spur gear 303a and the second spur gear 303b are fully meshed. When the first transmission roller 302a-1 rotates, the second spur gear 303b gradually fully meshes with the first spur gear 303a, the third connecting plate 302b-23 located on the side where the second spur gear 303b is located moves downward, and the elastic member 302b-24 returns to its initial state.

[0083] Reference Figures 8 to 10 , the third connecting plate 302b-23 is a split type.

[0084] In this embodiment, a plurality of the third connecting plates 302b-23 are arranged at intervals on any of the second connecting plates 302b-22 along the battery cell transmission direction. Preferably, the number of the third connecting plates 302b-23 slidably connected to any of the second connecting plates 302b-22 is the same as the number of the 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 of the second transmission rollers 302b-1 can be raised and lowered separately.

[0085] 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 cells.

[0086] 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 is reduced, the third connecting plate 302b-23 will move upward along the second connecting plate 302b-22 under the pressure at this 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 this position and preventing damage to the battery cell.

[0087] It is understandable that, during the battery transmission process, the second transmission roller 302b-1 will continuously "float" under the action of the third connecting plate 302b-23 and the elastic member 302b-24, and adjust the distance from the first transmission roller 302a-1 to prevent the battery cells from being crushed. It should be particularly noted that, during the floating process of the second transmission roller 302b-1, since its floating range is very small, it will not cause the separation of the first spur gear 303a and the second spur gear 303b.

[0088] Reference Fig.11 , the third connecting plate 302b-23 is integrated.

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

[0090] It should be noted that for Figures 8 to 11 In the embodiment shown in the figure, 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 third connecting plates 302b-23, and an ordinary bearing may also be rotatably mounted between the two third connecting plates 302b-23.

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

[0092] 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 the 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 is abutted 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 to each other. The second connecting portion 306b is located above the second connecting plate 302b-22. The adjusting bolt 306c extends in the height direction, with the bottom end abutting against the top of the second connecting plate 302b-22, and the top end passing through the second connecting portion 306b and extending upward. A limiting hole is provided at the top of the second connecting plate 302b-22, 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, rotate the adjusting bolt 306c 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.

[0095] The first connection portion 306a and the third connection plate 302b-23 are disposed on opposite sides of the second connection plate 302b-22. Preferably, the third connection plate 302b-23 is located on the inner side of the second connection plate 302b-22, and the first connection portion 306a is located on the outer side of the second connection 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 adopts a cylindrical head hexagon socket screw, and the first connecting part 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, firstly, 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 upward or downward 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 upward or downward 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.

[0099] The distance between the first transmission roller 302a-1 and the second transmission roller 302b-1 can be adjusted by the adjustment member 306 to adapt to the transmission of battery cells 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 cells from being crushed.

[0100] For the solution that 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, so as to achieve individual adjustment of each of the second transmission rollers 302b-1.

[0101] The second connecting portion 306b is connected to the third connecting plate 302b-23 via the elastic member 302b-24. For the solution with the adjusting member 306, the elastic member 302b-24 is connected to the second connecting portion 306b instead of the second connecting plate 302b-22, so as not to affect the "floating" adjustment of the second driving roller 302b-1.

[0102] 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 is made without affecting 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.

[0103] The support seat 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 seat 304 through bearings 302a-2 at both ends.

[0104] The support seat 304 is also provided with a rotation driving member 307, and the rotation driving member 307 is used to drive the first roller assembly 302a to rotate. The rotation driving member 307 includes a driving motor and a driving shaft, and the output end of the driving motor is connected to the driving shaft through a belt. The driving shaft extends along the arrangement direction of the first transmission rollers 302a-1, and the driving shaft is provided with a first bevel gear at intervals, and the first transmission roller 302a-1 is provided with a second bevel gear meshing with the first bevel gear.

[0105] When the driving motor is started, the driving shaft is driven to rotate through the belt, and the driving shaft rotates to drive 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.

[0106] The lifting assembly 305 includes a support frame 305a, a driving member 305b located on the support frame 305a, and 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 plus a module, and the second roller assembly 302b is driven to rise and fall through the driving member 305b.

[0107] 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 two opposite sides of the first connecting plate 302b-21, so that the lifting of the second roller assembly 302b is more stable and reliable.

[0108] 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.

[0109] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method 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 may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0110] 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. All equivalent embodiments or changes that do not deviate 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: A 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 component (301) is used to emit laser light to a battery 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); The lifting assembly (305) is used to drive the second roller assembly (302b) to move in the height direction so that the second spur gear (303b) is separated from or meshed with the first spur gear (303a).

2. The laser-assisted sintering device according to claim 1, characterized in that: It also includes a support base (304) located below the lifting assembly (305), the first roller assembly (302a) includes a plurality of first transmission rollers (302a-1) rotatably mounted on the support base (304), and the first spur gear (303a) is located at the axial end of the first transmission roller (302a-1).

3. The laser-assisted sintering device according to claim 1 or 2, characterized in that: The second roller shaft assembly (302b) comprises a lifting plate (302b-2) connected to the lifting assembly (305), a plurality of second transmission rollers (302b-1) rotatably mounted on the lifting plate (302b-2), and the second spur gear (303b) is located at the axial end of the second transmission roller (302b-1).

4. The laser-assisted sintering device according to claim 3, characterized in that: The lifting plate (302b-2) comprises 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), and the second transmission roller (302b-1) is rotatably installed between the two second connecting plates (302b-22).

5. The laser-assisted sintering device according to claim 3, characterized in that: The lifting plate (302b-2) comprises a first connecting plate (302b-21) connected to the lifting assembly (305), second connecting plates (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 a 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 roller (302b-1) is rotatably installed between the two third connecting plates (302b-23).

6. The laser-assisted sintering device according to claim 5, characterized in that: The elastic member (302b-24) extends in the height direction, and the connection end between the elastic member (302b-24) and the second connection plate (302b-22) is located above the connection end between the elastic member (302b-24) and the third connection plate (302b-23).

7. The laser-assisted sintering device according to claim 4 or 5, characterized in that: The second roller assembly (302b) further comprises self-aligning bearings (302b-3) located at both ends of the second transmission roller (302b-1), and the second transmission roller (302b-1) is rotatably mounted between the two second connecting plates (302b-22) or the two third connecting plates (302b-23) via the self-aligning bearings (302b-3).

8. The laser-assisted sintering device according to claim 7, characterized in that: The adjustment range of the self-aligning bearing (302b-3) is 0-10 mm.

9. The laser-assisted sintering device according to claim 1, characterized in that: The lifting component (305) comprises a support frame (305a) and a driving member (305b) located on the support frame (305a), and the second roller assembly (302b) is connected to the output end of the driving member (305b).

10. The laser-assisted sintering device according to claim 1, characterized in that: The lifting assembly (305) is provided in pair, and is disposed on both sides of the second roller assembly (302b).

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