A TOPCon battery double-sided coating equipment

Abstract

The present invention relates to the field of battery coating technology, and in particular to a TOPCon battery double-sided coating device, comprising a base and an end face limit assembly for clamping both sides of the battery, a rotating assembly for driving the clamped battery to flip is installed on the end face limit assembly, a lifting assembly is installed on the base, the rotating assembly comprises an active disk and a passive disk rotatably installed on the end face limit assembly, a bidirectional screw rod 1 is rotatably installed inside the active disk and the passive disk, two clamping slot plates arranged in front and back mirror images and sleeved on the bidirectional screw rod 1 are arranged on the opposite side of the active disk and the passive disk, a rotating motor connected to the active disk is installed on one side of the rotating assembly, and a sliding frame is installed between the outer surfaces of the active disk and the passive disk. The present invention realizes the smooth flipping of the TOPCon battery, avoids the battery panel from being subjected to torsional force, so as to effectively protect the battery panel from damage, and at the same time makes the equipment suitable for the coating of battery panels of various specifications and sizes.

Description

Technical Field

[0001] The invention relates to the technical field of battery coating, and in particular to a TOPCon battery double-sided coating device. Background Art

[0002] TOPCon, tunneling oxide passivation contact technology is to generate an ultra-thin tunneling oxide layer and a highly doped polysilicon layer on the surface of the battery. The passivation effect of the oxide layer and the field passivation effect of the highly doped polysilicon layer can greatly reduce the minority carrier recombination rate. At the same time, the highly doped polysilicon layer has good conductivity for majority carriers, so TOPCon batteries have high open circuit voltage and fill factor.

[0003] In the prior art, patent announcement number CN220393994U discloses a TOPCon battery double-sided coating device, including a workbench, a second drive motor is arranged on one side of the workbench, a bidirectional screw is arranged inwardly through the output end of the second drive motor, a slot is opened on the workbench, two threaded blocks are threadedly connected on the bidirectional screw, the threaded block passes through the slot and is upwardly provided with a first movable plate and a second movable plate, a first drive motor is arranged at the outer end of the first movable plate, and by arranging the second drive motor and the bidirectional screw, the threaded block can drive the two movable plates above to move relative to each other, thereby clamping and positioning the two ends of the TOPCon battery, and the clamping plate can perform doubly positioning on the TOPCon battery through the cylinder and the slider, thereby ensuring the stability of the TOPCon battery during coating and improving its coating efficiency.

[0004] The above technical solution solves the problems raised in the above background technology, but the above technical solution needs to accurately fix the position of the solar panel before clamping, and then clamping, and when turning over the solar panel, the motor only drives the turntable on one side, and uses the solar panel to drive the turntable on the other side to rotate synchronously. In this process, the solar panel is subjected to a torsional force, which can easily cause damage to the solar panel. Therefore, a TOPCon battery double-sided coating device that solves the above problems is needed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the object of the present invention is to provide a TOPCon battery double-sided coating device to solve the problem mentioned in the above background technology that the TOPCon battery to be coated is easily subjected to torsional force when it is clamped and turned over.

[0006] To achieve the above object, the present invention provides the following technical solutions: A TOPCon battery double-sided coating device, comprising a base and an end surface limiting assembly for clamping both sides of the battery, a rotating assembly for driving the clamped battery to flip is installed on the end surface limiting assembly, and a lifting assembly is installed on the base;

[0007] The rotating assembly comprises an active disk and a passive disk rotatably mounted on the end surface limit assembly, a bidirectional screw rod 1 is rotatably mounted inside the active disk and the passive disk, two clamping slot plates arranged in front and back mirror images and sleeved on the bidirectional screw rod 1 are arranged on opposite sides of the active disk and the passive disk, and a rotating motor connected to the active disk is installed on one side of the rotating assembly;

[0008] A sliding frame is installed between the outer surfaces of the active disk and the passive disk. When the end face limit assembly and the rotating motor are operated in sequence, the length of the sliding frame is adjusted laterally and transmits the rotational torque to the passive disk. When the sliding frame drives the bidirectional screw rod to rotate as the width specification of the battery to be coated changes, the distance between the front and rear clamping slot plates is adjusted.

[0009] Preferably, the sliding frame includes a telescopic cylinder structure arranged on the front and rear sides of the active disk and the passive disk, and a frame frame is rotatably installed at both ends of the telescopic cylinder structure of the front group, and the backs of the two frame frames are respectively fixedly connected to the outer surfaces of the active disk and the passive disk, and an extension rod connected to a bidirectional screw rod 1 is rotatably installed inside the two frame frames, and the outer surfaces of the two extension rods are sleeved with a bevel gear 1, and both ends of the telescopic cylinder structure are sleeved with a bevel gear 2 meshing with the bevel gear 1 through a tooth groove.

[0010] Preferably, the end face limit assembly includes a guide groove opened in the middle of the top surface of the base, and a two-way screw rod 2 is rotatably connected inside the guide groove. The outer surface sliding sleeve of the two-way screw rod 2 is provided with two sliding blocks respectively used to connect the active disk and the passive disk, and a clamping motor connected to the two-way screw rod 2 for transmission is installed on one side of the base.

[0011] Preferably, a distance measuring sensor is embedded and installed on the passive disk to monitor the distance between the passive disk and the active disk when the clamping motor is running, and the distance measuring sensor is electrically connected to the clamping motor.

[0012] Preferably, the telescopic cylinder structure includes an outer sleeve that passes through one of the frame frames and bevel gear two in sequence, and the inner part of the outer sleeve is slidably connected with an inner extension cylinder that passes through another frame frame and bevel gear two. A sliding groove is provided on the outer surface of the outer sleeve, and a limit block is integrally installed on the inner extension cylinder, which is embedded in the sliding groove and ensures the synchronous rotation of the entire telescopic cylinder structure.

[0013] Preferably, both ends of the rear group of telescopic cylinder structures are fixedly mounted with solid frames, and the front ends of the two solid frames are fixedly connected to the surfaces of the active disk and the passive disk respectively.

[0014] Preferably, the lifting assembly includes a lifting platform arranged on a base, a notch is provided on the top surface of the lifting platform, and a lifting cylinder is installed inside the base so that the bottom wall of the notch is at the same height as the bottom wall of the clamping groove plate when the end face limit assembly clamps the battery to be coated.

[0015] Preferably, the lifting platform is provided with a strip groove interconnected with the notch, and two positioning strips arranged in front and back mirror images are slidably connected to the bottom wall of the notch. A bidirectional screw is rotatably inserted into the lifting platform and passes through the strip groove, and is used to adjust the distance between the two positioning strips to be consistent with the distance between the inner walls of the front and back clamping groove plates.

[0016] By means of the above technical solution, the present invention provides a TOPCon battery double-sided coating device, which has at least the following beneficial effects:

[0017] 1. The present invention drives the active disk by running a rotating motor, and at the same time uses a sliding frame to transmit the rotational torque to the passive disk, thereby achieving a smooth flipping of the TOPCon battery, avoiding the torsional force on the battery panel when the flipping is driven from one side in the traditional way, so as to effectively protect the battery panel from damage.

[0018] 2. The present invention enables the sliding frame to integrate the functions of torque transmission and spacing adjustment of two front and rear clamping slot plates, thereby ensuring the consistency of the spacing adjustment of the clamping slot plates on the passive disk and the active disk, reducing unnecessary space occupation and resource waste, and reducing costs.

[0019] 3. The present invention can accurately control the position of the TOPCon battery through the coordinated application of the clamping motor, the bidirectional screw rod 2 and the sliding block, avoiding the film damage caused by multiple placement of silicon wafers under normal circumstances, and improving the uniformity and accuracy of the coating.

[0020] 4. The present invention cooperates with the application of a distance measuring sensor to automatically sense and adjust the force when clamping the TOPCon battery, thereby avoiding damage to the battery panel caused by excessive clamping.

[0021] 5. The present invention optimizes the clamping and flipping process of TOPCon batteries as a whole, and improves the automation level and production efficiency of double-sided coating of TOPCon batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the position structure of the clamping slot plate and the slot of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the present invention from a top view;

[0026] Figure 4 It is a schematic diagram of the installation structure of the active disk and the frame frame of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the rotating assembly of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the sliding frame of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the lifting assembly of the present invention.

[0030] In the figure:

[0031] 1. Base;

[0032] 2. End face limit assembly; 201. Guide groove; 202. Two-way screw rod 2; 203. Sliding block; 204. Clamping motor;

[0033] 3. Rotating assembly; 301. Active disk; 302. Passive disk; 303. Bidirectional screw rod 1; 304. Clamping slot plate; 305. Rotating motor; 306. Distance sensor;

[0034] 4. Lifting assembly; 401. Lifting platform; 402. Notch; 403. Lifting cylinder; 404. Positioning strip; 405. Bidirectional screw;

[0035] 5. Sliding frame; 501. Telescopic cylinder structure; 5011. Outer sleeve; 5012. Inner extension cylinder; 5013. Slide groove; 5014. Limit block; 502. Frame frame; 503. Extension rod; 504. Bevel gear one; 505. Bevel gear two. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the 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 limiting the present invention.

[0037] Embodiment 1

[0038] When coating TOPCon cells, it is usually necessary to clamp them on both sides and give the clamping structure a rotational force to drive the TOPCon cells to turn over. However, under normal circumstances, the motor that applies the rotational force only drives the clamping structure on one side. In actual applications, the TOPCon cell located between the two clamping structures acts as a torque conductor to drive the clamping structure on the other side to rotate synchronously. In this process, the TOPCon cell is subjected to torque, which can easily cause damage to the battery panel. Figure 1-Figure 7 As shown, this embodiment proposes a TOPCon battery double-sided coating device, which can effectively prevent TOPCon batteries from being damaged. The TOPCon battery double-sided coating device has a base 1 and an end face limit assembly 2 for clamping both sides of the battery. The end face limit assembly 2 is equipped with a rotating assembly 3 for driving the clamped battery to flip. The base 1 is equipped with a lifting assembly 4. When in use, the TOPCon battery is first placed on the top surface of its lifting assembly 4, and under normal circumstances, the width of the lifting assembly 4 is slightly smaller than the length of the TOPCon battery, and then the lifting assembly 4 is operated to raise its top surface to a set height position, so that when the end face limit assembly 2 is subsequently operated, the two sides of the TOPCon battery are clamped, and then the lifting assembly 4 is reset, and the battery is coated by an external coating device.

[0039] Specifically, the rotating component 3 includes an active disk 301 and a passive disk 302 rotatably mounted on the end face limit component 2, and a bidirectional screw rod 303 is rotatably mounted inside the active disk 301 and the passive disk 302. Two clamping slot plates 304 arranged in front and back mirror images and sleeved on the bidirectional screw rod 303 are arranged on the opposite sides of the active disk 301 and the passive disk 302. A rotating motor 305 connected to the active disk 301 is installed on one side of the rotating component 3, and a sliding frame 5 is installed between the outer surfaces of the active disk 301 and the passive disk 302. When the end face limit component 2 and the rotating motor 305 are operated in sequence, the length of the sliding frame 5 is adjusted laterally and the rotational torque is transmitted to the passive disk 302. When the sliding frame 5 drives the bidirectional screw rod 303 to rotate as the width specification of the battery to be coated changes, the distance between the front and rear clamping slot plates 304 is adjusted. During the battery coating process, when the battery needs to be flipped, the active disk 301 is controlled to rotate to a set angle by running the rotating motor 305, and the sliding frame 5 is used to transmit the rotational torque to the passive disk 302, rather than the traditional method of transmitting the rotational torque from the battery to the passive disk 302, thereby achieving a smooth flipping of the TOPCon battery and effectively protecting the battery from damage.

[0040] Embodiment 2

[0041] like Figure 4 and Figure 6As shown, TOPCon batteries have various width specifications. In order to improve the adaptability of the rotating component 3 in the above-mentioned embodiment 1 to TOPCon batteries of various width specifications, the sliding frame 5 includes a telescopic cylinder structure 501 arranged on the front and rear sides of the active disk 301 and the passive disk 302, and a frame frame 502 is rotatably installed at both ends of a group of telescopic cylinder structures 501 in the front, and the backs of the two frame frames 502 are respectively fixedly connected to the outer surfaces of the active disk 301 and the passive disk 302, and an extension rod 503 connected to a bidirectional screw rod 1 303 is rotatably installed inside the two frame frames 502, and the outer surfaces of the two extension rods 503 are sleeved with a bevel gear 1 504, and both ends of the telescopic cylinder structure 501 are sleeved with a bevel gear 2 505 meshing with the bevel gear 1 504 through a tooth groove. In the previous embodiment, when the bidirectional screw rod 1 303 is subjected to the action of the rotational force, the two clamping slot plates 304 sleeved on its outer surface can be controlled to move in opposite or relative directions, thereby adjusting the spacing, so as to adapt to the clamping of TOPCon batteries of various widths and sizes during coating. Based on this, by applying a rotational force in the set direction to the telescopic cylinder structure 501, the bevel gears 2 505 at both ends thereof are driven to rotate, and then the two extension rods 503 with bevel gears 1 504 are driven to rotate synchronously, thereby finally driving the two bidirectional screw rods 1 303 to rotate, and controlling the two clamping slot plates 304 on the bidirectional screw rod 1 303 to move in relative or opposite directions, so as to achieve the purpose of adjusting the spacing between the front and rear clamping slot plates 304 according to the width specifications of the TOPCon battery to be coated. And only by rotating a set of telescopic cylinder structures 501, the spacing adjustment between the front and rear clamping slot plates 304 on the active disk 301 and the passive disk 302 can be synchronously controlled to ensure the consistency of the spacing adjustment. In addition, the sliding frame 5 integrates the functions of torque transmission and spacing adjustment of the two front and rear clamping slot plates 304, which can reduce unnecessary space occupation and resource waste, while reducing costs.

[0042] Embodiment 3

[0043] In order to effectively avoid the end surface limit assembly 2 in the above embodiment 1 from being damaged due to excessive clamping when clamping the TOPCon battery. Figure 3 and Figure 5As shown, the end face limit assembly 2 includes a guide groove 201 opened in the middle of the top surface of the base 1, and a two-way screw rod 202 is rotatably connected inside the guide groove 201. The outer surface sliding sleeve of the two-way screw rod 202 is provided with two sliding blocks 203 respectively used to connect the active disk 301 and the passive disk 302. A clamping motor 204 connected to the two-way screw rod 202 is installed on one side of the base 1. After the clamping motor 204 is running, it drives the two-way screw rod 202 to rotate in the set direction accordingly, thereby controlling the two sliding blocks 203 to move in relative or opposite directions, so as to adjust the distance between the active disk 301 and the passive disk 302 according to the length of the TOPCon battery to be coated. A distance sensor 306 is embedded and installed on the passive disk 302 to monitor the distance between the active disk 301 when the clamping motor 204 is running, and the distance sensor 306 is electrically connected to the clamping motor 204. When the distance sensor 306 detects that the distance between itself and the active disk 301 reaches the set distance, the clamping motor 204 stops running, realizing the purpose of automatically sensing and adjusting the force when clamping the solar panel, avoiding damage to the solar panel caused by excessive clamping. At the same time, a reset signal is given to the lifting assembly 4.

[0044] Embodiment 4

[0045] Following the above-mentioned second embodiment, under normal circumstances, the interior of the telescopic cylinder structure 501 is composed of two cylindrical bodies, one large and one small, which are arranged in a sleeve. At this time, the two cylindrical bodies in the telescopic cylinder structure 501 not only have the function of adjusting the length, but also have the function of relative rotation. Therefore, when a rotational force is applied to the entire telescopic cylinder structure 501, it is easy to fail to drive the two extension rods 503 to rotate at the same time, which ultimately affects the consistency of the spacing adjustment of the clamping slot plates 304 arranged in pairs. In order to effectively solve this problem, as Figure 6As shown, the telescopic cylinder structure 501 includes an outer sleeve 5011 that passes through one of the frame frames 502 and the second bevel gear 505 in sequence, and the inner extension cylinder 5012 that passes through the other frame frame 502 and the second bevel gear 505 is slidably connected inside the outer sleeve 5011, and a sliding groove 5013 is provided on the outer surface of the outer sleeve 5011, and a stopper 5014 that is embedded in the sliding groove 5013 and ensures the synchronous rotation of the entire telescopic cylinder structure 501 is integrally installed on the inner extension cylinder 5012. By providing the sliding groove 5013 on the outer sleeve 5011 and cooperating with the stopper 5014 additionally provided on the inner extension cylinder 5012, the inner extension cylinder 5012 can only telescopically move relative to the outer sleeve 5011. And when a rotational force is subsequently applied to the outer sleeve 5011, the rotational torque can be immediately transmitted to the inner extension sleeve 5012 through the limit block 5014, ensuring that the two drive the two bevel gears 505 to rotate synchronously and at the same speed, thereby ensuring the consistency of the overall rotation direction and speed of the structure composed of the bevel gear 1 504, the extension rod 503 and the bidirectional screw 1 303 on the active disk 301 and the passive disk 302, so as to simultaneously control the spacing adjustment between the front and rear clamping slot plates 304 on the active disk 301 and the passive disk 302.

[0046] In order to effectively ensure the stability of the active disk 301 when transmitting the rotational torque to the passive disk 302, as shown in FIG. Figure 4 As shown, both ends of a group of telescopic cylinder structures 501 at the rear are fixedly installed with solid frames 506, and the front ends of the two solid frames 506 are fixedly connected to the surfaces of the active disk 301 and the passive disk 302, respectively. The weight of the solid frames 506 is equivalent to the weight of the passive disk 302 and the structure on the front side of the active disk 301 except the telescopic cylinder structure 501. The structure for transmitting the torque is installed on the front and rear sides of the active disk 301 and the passive disk 302, which can effectively improve the transmission stability and improve the torque transmission efficiency. In addition, the structure for transmitting the torque is set on both the front and rear sides, which helps to improve the symmetry of the transmission system, making the transmission system more uniform when working, and reducing the mechanical deformation and stress concentration caused by asymmetric torque.

[0047] Embodiment 5

[0048] Following the above-mentioned second embodiment, in order to make the TOPCon battery placed on the lifting assembly 4 accurately docked with the front and rear clamping slot plates 304 on the active disk 301 and the passive disk 302. Figure 2 and Figure 7As shown, the lifting component 4 includes a lifting platform 401 arranged on the base 1, and a slot 402 is provided on the top surface of the lifting platform 401. A lifting cylinder 403 is installed inside the base 1 so that the bottom wall of the slot 402 is at the same height as the bottom wall of the clamping slot plate 304 when the end face limit component 2 clamps the battery to be coated. A strip groove is provided on the lifting platform 401 and is interconnected with the slot 402. Two positioning strips 404 arranged in front and back mirror images are slidably connected to the bottom wall of the slot 402. A bidirectional screw 405 that passes through the strip groove and is rotatably inserted on the lifting platform 401 and is used to adjust the distance between the two positioning strips 404 to be consistent with the distance between the inner walls of the front and rear clamping slot plates 304. In actual application, firstly, the distance between the front and rear positioning bars 404 is adjusted according to the specifications of the TOPCon battery to be coated, and the two positioning bars 404 sleeved on the surface are controlled to move in relative or opposite directions by applying a rotational force in the set direction to the bidirectional screw 405, so that the distance between the two positioning bars 404 is consistent with the distance between the inner walls of the front and rear clamping slot plates 304 on the passive disk 302 and the active disk 301, and then the TOPCon battery is placed between the two positioning bars 404 on the lifting platform 401, and then the lifting cylinder 403 is operated to move the lifting platform 401 upward, so that the bottom wall of the slot 402 is at the same height as the bottom wall of the clamping slot plate 304, and then the end face limit assembly 2 is operated to clamp the TOPCon battery, and after the TOPCon battery is stably clamped, the lifting cylinder 403 drives the lifting platform 301 to reset.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A TOPCon battery double-sided coating device, comprising a base (1) and an end surface limiting assembly (2) for clamping both sides of the battery, characterized in that: The end surface limiting assembly (2) is provided with a rotating assembly (3) for driving the clamped battery to flip, and the base (1) is provided with a lifting assembly (4); The rotating assembly (3) comprises an active disk (301) and a passive disk (302) rotatably mounted on the end surface limit assembly (2); a bidirectional screw rod (303) is rotatably mounted inside the active disk (301) and the passive disk (302); two clamping slot plates (304) are arranged in a front-to-back mirror image and sleeved on the bidirectional screw rod (303) on opposite sides of the active disk (301) and the passive disk (302); and a rotating motor (305) drivingly connected to the active disk (301) is mounted on one side of the rotating assembly (3); A sliding frame (5) is installed between the outer surfaces of the active disk (301) and the passive disk (302); when the end surface limit assembly (2) and the rotating motor (305) are operated in sequence, the length of the sliding frame (5) is adjusted laterally and transmits a rotational torque to the passive disk (302); when the sliding frame (5) drives the bidirectional screw rod 1 (303) to rotate as the width specification of the battery to be coated changes, the distance between the front and rear clamping slot plates (304) is adjusted; The sliding frame (5) comprises telescopic cylinder structures (501) arranged on the front and rear sides of the active disk (301) and the passive disk (302); a frame frame (502) is rotatably mounted on both ends of the telescopic cylinder structure (501) in the front, and the backs of the two frame frames (502) are respectively fixedly connected to the outer surfaces of the active disk (301) and the passive disk (302); an extension rod (503) connected to a bidirectional screw rod (303) is rotatably mounted inside the two frame frames (502); a bevel gear (504) is sleeved on the outer surfaces of the two extension rods (503); and a bevel gear (505) meshing with the bevel gear (504) through a tooth groove is sleeved on both ends of the telescopic cylinder structure (501); The end face limit assembly (2) comprises a guide groove (201) provided in the middle of the top surface of the base (1), a bidirectional screw rod (202) being rotatably connected inside the guide groove (201), a sliding sleeve on the outer surface of the bidirectional screw rod (202) being provided with two sliding blocks (203) respectively used for connecting to the active disk (301) and the passive disk (302), and a clamping motor (204) being transmission-connected to the bidirectional screw rod (202) is installed on one side of the base (1); The telescopic cylinder structure (501) comprises an outer sleeve (5011) which passes through one of the frame frames (502) and the second bevel gear (505) in sequence, the inner portion of the outer sleeve (5011) is slidably connected with an inner extension cylinder (5012) which passes through another frame frame (502) and the second bevel gear (505), a sliding groove (5013) is provided on the outer surface of the outer sleeve (5011), and a limit block (5014) which is embedded in the sliding groove (5013) and ensures the synchronous rotation of the entire telescopic cylinder structure (501) is integrally installed on the inner extension cylinder (5012).

2. A TOPCon battery double-sided coating device according to claim 1, characterized in that: The passive disk (302) is embedded with a distance sensor (306) for monitoring the distance between the passive disk (302) and the active disk (301) when the clamping motor (204) is running, and the distance sensor (306) is electrically connected to the clamping motor (204).

3. A TOPCon battery double-sided coating device according to claim 1, characterized in that: Solid frames (506) are fixedly mounted on both ends of the telescopic cylinder structure (501) at the rear, and the front ends of the two solid frames (506) are fixedly connected to the surfaces of the active disk (301) and the passive disk (302), respectively.

4. A TOPCon battery double-sided coating device according to claim 1, characterized in that: The lifting assembly (4) comprises a lifting platform (401) arranged on a base (1); a notch (402) is provided on the top surface of the lifting platform (401); and a lifting cylinder (403) is installed inside the base (1) so that when the end surface limiting assembly (2) clamps the battery to be coated, the bottom wall of the notch (402) is at the same height as the bottom wall of the clamping groove plate (304).

5. A TOPCon battery double-sided coating device according to claim 4, characterized in that: The lifting platform (401) is provided with a strip groove interconnected with the notch (402), and two positioning strips (404) arranged in front and back mirror images are slidably connected to the bottom wall of the notch (402). A bidirectional screw (405) is rotatably inserted into the lifting platform (401) and passes through the strip groove, and is used to adjust the distance between the two positioning strips (404) to be consistent with the distance between the inner walls of the front and back clamping slot plates (304).

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