Novel photovoltaic cell slice passivation equipment

Abstract

The utility model relates to the technical field of photovoltaic cells, and discloses novel photovoltaic cell slice passivation equipment, which comprises a brush coating assembly, a plurality of clamp assemblies and a plurality of passivation tracks, the passivation track comprises a base on which a plurality of battery slices are stacked on a plane and a plane moving assembly connected with the base, and the plane moving assembly drives the base to move below the clamp assembly; the clamp assembly clamps and fixes a plurality of battery slices between the clamp assembly and the base; the brushing assembly comprises a rolling brush and a mechanical arm, the inner end of the mechanical arm is connected with a mechanical front arm, the mechanical front arm is connected with the rolling brush, the mechanical arm drives the mechanical front arm and the rolling brush to move front and back and left and right, the outer face of the rolling brush makes contact with the cutting side faces of the battery slices in the bases of the passivation rails in sequence, and brushing of passivation liquid outside the rolling brush is achieved. According to the passivation equipment, a passivation solution can be coated more uniformly, the passivation effect is better, fragments are not prone to occurring in the coating process, and the passivation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cells, and in particular to a novel photovoltaic cell slice passivation device. Background Art

[0002] At present, half-cell photovoltaic modules, shingled photovoltaic modules and patchwork photovoltaic modules have been widely used in the industry. This is because the traditional full-cell module technology uses full-cells (i.e., whole uncut cells) for assembly, which has the following defects: large-area full-cells have large internal currents and line resistances, high internal power losses, and the power generation is affected. The half-cell and shingled photovoltaic module technologies developed by laser scribing technology cut the full cell into half, 1 / 3 or 1 / 6 (i.e., cut the full cell into several cell slices), which can reduce the internal current and line resistance, reduce the internal power loss, and increase the power generation. At the same time, the operating temperature of the photovoltaic module will also decrease as the internal loss decreases, making it have a higher photoelectric conversion efficiency.

[0003] After the laser cuts the whole cell, the cross-sectional defects of the cell slices are seriously compounded, which will have a significant negative impact on the electrical performance of the cell slices (such as causing power loss to the photovoltaic modules of the half-cell). Studies have shown that after laser cutting, the efficiency of the heterojunction half-cell cell decreases by 0.35% abs (absolute value), the efficiency of the PERC half-cell cell decreases by 0.1-0.2% abs, and the efficiency of the TOPCon half-cell cell decreases by 0.2-0.3% abs. Therefore, reducing the defect compounding of the cut side of the half-cell cell and passivating it is another key process for improving industrial efficiency. However, the photovoltaic industry currently does not have suitable passivation equipment to perform uniform and good passivation treatment on the cut side of the cell slices:

[0004] For example, the solar cell cut surface polishing and passivation device provided by publication number CN113903827A vertically sucks the cell slice through the suction cup of the fixture, and then polishes the cut side of the cell slice with a coarse polishing wheel and a fine polishing wheel. Since the sucked cell slice is placed vertically, the polishing process easily causes the cell slice to fall off and fragment, which is not conducive to mass production; and the passivation device can only suck one cell slice at a time, and the passivation efficiency is low.

[0005] For another example, the crystalline silicon cell slice cutting and slicing passivation equipment provided by publication number CN115763618A sprays the passivation liquid on the cut side of the cell slice through a spraying device. The uniformity of the spraying by the spraying device is difficult to control, which easily leads to uneven thickness of the passivation liquid sprayed on the cut side of the cell slice, thus affecting the passivation effect. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a novel photovoltaic cell slice passivation device.

[0007] Based on this, the utility model discloses a novel photovoltaic cell slice passivation device, including a brush coating component, a plurality of clamp components, and a plurality of passivation tracks sequentially installed along the outer side of the brush coating component;

[0008] The passivation track includes a base for flatly stacking multiple battery slices and a flat moving component connected to the base, and the flat moving component drives the base to move so that the multiple battery slices are moved to the bottom of the clamp component;

[0009] The clamp assembly is installed between the roller brush and the passivation track to clamp and fix the multiple battery slices moved below the clamp assembly between the clamp assembly and the base;

[0010] The brush coating assembly includes a roller brush and a robotic arm, the inner end of the robotic arm is connected to a robotic forearm, and the robotic forearm is connected to the roller brush, so that the robotic arm drives the robotic forearm and the roller brush to move forward and backward and left and right, so that the outer peripheral surface of the roller brush sequentially contacts the cut side surfaces of multiple battery slices in the base of each group of passivation tracks, so as to realize the brush coating of the passivation liquid absorbed by the outside of the roller brush.

[0011] Preferably, the novel photovoltaic cell slice passivation device of the utility model further comprises a tank body for loading the passivation liquid, wherein the tank body is located below the brush coating assembly;

[0012] The mechanical forearm is connected to a rotating member, and the rotating member is connected to a roller brush to drive the roller brush to rotate and apply the passivation liquid;

[0013] A shaft is also connected between the mechanical front arm and the rotating member. The mechanical front arm drives the roller brush to move up and down through the shaft so that the roller brush absorbs the passivation liquid in the tank body.

[0014] Preferably, the outer end of the robotic arm is rotatably connected to the machine base; the robotic arm is a four-axis robotic arm, so that the four-axis robotic arm drives the mechanical front wall to perform a 180° planar semicircular rotation to achieve the forward and backward, left and right movement of the mechanical forearm and the roller brush.

[0015] Preferably, the clamp assembly includes a bracket, a clamp block and a first driving member fixed to the bracket, and the clamp block is connected to the bottom of the first driving member, so that the first driving member drives the clamp block to move up and down, so that the clamp block can be pressed down on the surface of the battery slice to clamp and fix multiple battery slices between the clamp block and the base.

[0016] Further preferably, the clamp assembly further comprises a buffer block disposed below the clamp block, the clamp block clamps and fixes the plurality of battery slices between the clamp block and the base through the buffer block, and the buffer block is a soft material block or an elastic material block;

[0017] Alternatively, the clamping block is a block of soft material.

[0018] Preferably, the planar moving assembly comprises a second driving member, which is connected to the outer side of the base to push the base towards or away from the roller brush.

[0019] Further preferably, a new photovoltaic cell slice passivation device of the utility model comprises a loading platform; the planar moving component also comprises a planar sliding module installed on the loading platform, the second driving member is fixed on the slide plate, and the slide plate is slidably connected to the planar sliding module, so that the planar sliding module drives the slide plate to approach or move away from the roller brush.

[0020] More preferably, the table top of the loading platform is tilted downward from the inside to the outside so that the table top forms an inclination angle of 15° to 30° with the horizontal plane, so that multiple battery slices can be automatically arranged neatly in the base.

[0021] Preferably, the number of the passivation tracks is five, and five groups of clamp assemblies are provided accordingly.

[0022] Preferably, the outer peripheral surface of the roller brush is made of a soft liquid-absorbing material or a hard polishing material.

[0023] Compared with the prior art, the utility model has at least the following beneficial effects:

[0024] The passivation equipment of the utility model can clamp and fix multiple battery slices stacked in a plane in the base between the clamp assembly and the base through the cooperation of the clamp assembly, the plane moving assembly of the passivation track and the base; and then through the cooperation of the roller brush, the mechanical arm and the mechanical forearm of the brushing assembly, the roller brush can be moved forward and backward and left and right with the mechanical arm and the mechanical forearm, so that the cut sides of multiple battery slices on each passivation track can contact the outside of the roller brush in turn and be brushed with the passivation liquid on the outside of the roller brush; in this way, the cut sides of the battery slices of multiple groups of passivation tracks can be brushed with the passivation liquid in order from left to right, and compared with spraying, the passivation liquid can be applied more evenly on the cut sides of the battery slices, so the passivation effect is better, and the power loss of the battery slice assembly can be further reduced. Moreover, the lower surfaces of the multiple battery slices stacked in a plane are carried, supported and protected by the bottom surface of the base. Therefore, compared with the upright placement of battery slices in the prior art (such as CN113903827A), the battery slices are less likely to fall off or break during the passivation process, which is conducive to mass production.

[0025] Furthermore, multiple groups of passivation tracks correspond to multiple bases, so the passivation equipment can flatly stack and passivate multiple (e.g., 1500 to 2000) battery slices at a time, greatly improving the passivation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a top view of a novel photovoltaic cell slice passivation device of this embodiment.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of a novel photovoltaic cell slice passivation device of this embodiment.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure from another perspective of a novel photovoltaic cell slice passivation device of this embodiment.

[0029] Figure 4 It is an enlarged view of the partial three-dimensional structure of the passivation track and the brush coating component in a novel photovoltaic cell slice passivation device of this embodiment.

[0030] Figure 5 It is a partial front view of a passivation track and a brush coating component in a novel photovoltaic cell slice passivation device of this embodiment.

[0031] Explanation of the accompanying drawings: brush assembly 1; roller brush 11; robotic arm 12; robotic forearm 121; shaft 122; rotating member 13; coupling 14; mounting table 2; base 21; controller interface 3; trough body 4; clamp assembly 5; bracket 51; first driving member 52; clamp block 53; buffer block 54; stage 6; passivation track 7; base 71; planar moving assembly 72; second driving member 721; slide plate 722; sensor 7221; planar sliding module 723; battery slice 8. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Example

[0034] A novel photovoltaic cell slice passivation device of this embodiment, see Figure 1-3 , including a mounting table 2, a brush coating component 1, a trough body 4 for loading a passivation liquid, a plurality of sets of fixture components 5, a stage 6 and a plurality of sets of passivation tracks 7 sequentially installed along the outer peripheral surface of the brush coating component 1.

[0035] The brushing assembly 1 includes a roller brush 11. The trough body 4 is located below the roller brush 11 of the brushing assembly 1; and the clamp assembly 5 is installed between the roller brush 11 and the passivation track 7 to clamp and fix the multiple battery slices 8 moved below the clamp assembly 5 between the clamp assembly 5 and the base 71. A mechanical arm 12 is installed above the roller brush 11; a base 21 is installed on the mounting table 2 (for example, the base 21 is screwed to the mounting table 2), and the outer end of the mechanical arm 12 is rotatably connected to the base 21; the inner end of the mechanical arm 12 is connected to the mechanical forearm 121 to drive the mechanical forearm 121 and the roller brush 11 to move forward and backward and left and right.

[0036] Moreover, the mechanical front arm 121 is connected in sequence to the shaft 122 and the rotating member 13 (such as Figure 3 The mechanical forearm 121 and the shaft 122 are preferably connected by a linear track, and the shaft 122 and the rotating member 13 are preferably hinged. The mechanical forearm 121 drives the rotating member 13 and the roller brush 11 to move up and down through the shaft 122, so that the roller brush 11 absorbs the passivation liquid in the tank body 4, and the rotating member 13 drives the roller brush 11 to rotate and brush the passivation liquid.

[0037] In practice, the rotating member 13 (such as a rotating motor) is connected to the rotating member 13 by a coupling 14 (such as a rotating motor). Figure 3 As shown, for example, an aluminum alloy plum blossom coupling from Shenzhen Xingda Precision Enterprise Store or other existing couplings) is connected to the roller brush 11.

[0038] When the passivation liquid is applied by brushing, the rotating member 13 drives the roller brush 11 to rotate through the coupling 14 , so that the roller brush 11 rotates and applies the passivation liquid absorbed by its outer peripheral surface to the cut side surface of the battery slice 8 .

[0039] Specifically, considering the cost, passivation uniformity and passivation efficiency, the mechanical arm 12 is preferably a four-axis mechanical arm (such as a four-axis robot mechanical arm; for example, a domestic four-axis SCARA robot mechanical arm of Shenzhen Chuangfu Technology Co., Ltd. or other existing four-axis robot mechanical arms), and the four-axis mechanical arm rotates along the machine base 21 so that the four-axis mechanical arm drives the front wall of the machine to perform a 180° plane drawing semicircular rotation (such as Figure 1 As shown by the rotation arrows, the mechanical forearm 121 (such as the forearm of a four-axis robot) and the roller brush 11 can be moved forward and backward and left and right. In this way, through the cooperation of the mechanical arm 12, the mechanical front wall 121 and the roller brush 11, the roller brush 11 can rotate 180° in a plane semicircle with the mechanical forearm 121 during the process of rotating and brushing the passivation liquid, so that the passivation liquid can be rotated and applied to the cut side surfaces of the battery slices 8 of the multiple groups of passivation tracks 7 in sequence from left to right, and then compared with spraying, the passivation liquid can be applied more evenly on the cut side surfaces of the battery slices 8, so the passivation effect is better.

[0040] Of course, in other examples of this embodiment, the robot arm 12 may also be a six-axis robot arm or other existing robot arm with more flexible movement.

[0041] When the roller brush 11 is dipped in the passivation liquid, the front wall of the machine drives the shaft 122 to move downward, so that the shaft 122 drives the rotating member 13 and the roller brush 11 to move downward until the roller brush 11 is completely immersed in the passivation liquid in the tank 4 and then automatically stops moving downward.

[0042] After the roller brush 11 absorbs the passivation liquid for a period of time (such as 1-3 minutes), the front wall of the machine drives the shaft 122 to move upward, so that the shaft 122 drives the rotating part 13 and the roller brush 11 to move upward, so that the roller brush 11 stays at a position matching the height of the base 71 of the passivation track 7, and then the outer peripheral surface of the roller brush 11 can contact and brush the absorbed passivation liquid onto the cut side surfaces of the multiple battery slices 8 clamped and fixed by the clamp assembly 5.

[0043] In one example of this embodiment, the outer peripheral surface of the roller brush 11 is made of a soft liquid-absorbing material (such as a rubber liquid-absorbing sleeve or a soft sponge liquid-absorbing sleeve). At this time, the outer peripheral surface of the roller brush 11 can brush the absorbed passivation liquid onto the cut side of the battery slice 8.

[0044] In another example of this embodiment, the outer peripheral surface of the roller brush 11 is made of a hard polishing material to polish the cut side surface of the battery slice 8 to reduce defects on the cut side surface.

[0045] Among them, see Figure 1-5 The passivation track 7 includes a plane moving component 72 and a base 71 for plane stacking multiple battery slices 8; the plane moving component 72 is installed below the base 71 to drive the base 71 to move so that the plane stacked multiple battery slices 8 are moved to the bottom of the clamp component 5. Since the multiple battery slices 8 are plane stacked in the base 71, the lower surface of the plane stacked multiple battery slices 8 is supported, supported and protected by the bottom surface of the base 71. Therefore, compared with the vertical placement of the battery slices 8 in the prior art (such as CN113903827A), it is not easy to cause the battery slices 8 to fall off or break during the passivation process, which is conducive to mass production.

[0046] Specifically, the plane moving assembly 72 includes a second driving member 721, which is connected to the outer side of the base 71, so that the second driving member 721 pushes the base 71 to move closer to or away from the roller brush 11. For example, the second driving member 721 can be a cylinder (such as the 10-axis dual-rod TN16 cylinder of the Jane's pneumatic element) or other types of driving members. When the second driving member 721 is a cylinder, the base 71 and the cylinder can be connected by screws.

[0047] Specifically, the planar moving component 72 also includes a planar sliding module 723 (such as the fully enclosed sliding module model GBF150 precision manufactured by Yuannuo or other existing sliding modules) installed on the worktable 6 (such as installed by screws), the second driving member 721 is fixed (such as fixed by screws) on the slide plate 722, and the base 71 is located above the slide plate 722; the slide plate 722 is slidably connected to the planar sliding module 723 (for example, the bearing in the planar sliding module 723 is connected to the slide plate 722), so that the planar sliding module 723 drives the slide plate 722 to approach or move away from the roller brush 11.

[0048] The surface of the stage 6 is inclined downward from the inner side of the stage 6 (i.e., the side of the stage 6 close to the roller brush 11) to the outer side of the stage 6 (i.e., the side of the stage 6 away from the roller brush 11), so that the surface of the stage 6 is inclined at an angle of 15° to 30° with the horizontal plane (e.g., Figure 4 As shown in the inclination angle θ, the multiple battery slices 8 are automatically arranged neatly in the base 71 toward the side of the base 71 away from the roller brush 11, thereby reducing the trouble of manually arranging the multiple battery slices 8.

[0049] Before the roller brush 11 rotates and applies the passivation liquid, the multiple battery slices 8 in the base 71 can be leveled with a foam pad, so that when the roller brush 11 rotates and applies the passivation liquid, the side surface of the roller brush 11 is parallel to the cut side surface of the battery slice 8. Alternatively, due to the inclination of the stage 6, the cut side surfaces of the multiple battery slices 8 in the base 71 and the side surface of the roller brush 11 will form an angle. At this time, a more flexible six-axis robot arm or other existing robot arm can be used to adjust the angle between the side surface of the roller brush 11 and the cut side surface of the battery slice 8 during the roller brush 11 rotating and applying the passivation liquid, so as to ensure that the passivation liquid on the cut side surface of each battery slice 8 is applied more evenly.

[0050] Furthermore, a sensor 7221 (such as Figure 4 As shown), a side of the planar sliding module 723 away from the roller brush 11 (ie, the outer side of the planar sliding module 723) is also provided with a controller interface 3 (such as a PLC device) for connecting to an external control device (such as a PLC device). Figure 1 , 3 As shown, for example, a PLC controller interface) is used to control the plane moving component 72 to automatically approach or move away from the roller brush 11.

[0051] Before applying the passivation liquid, the cut battery slices 8 are placed in the base 71, and the second driving member 721 first pushes the base 71 to move toward the side close to the roller brush 11 (i.e., pushes the base 71 to move toward its inner side). When the base 71 is pushed to be sensed by the sensor 7221, the second driving member 721 stops pushing, and the planar sliding module 723 drives the slide plate 722 to continue moving, so that the second driving member 721 and the base 71 move together with the slide plate 722 toward the roller brush 11, so that the battery slices 8 in the base 71 are moved to the bottom of the clamp assembly 5, so that the subsequent clamp assembly 5 can clamp and fix the multiple battery slices 8 stacked in a flat surface between the clamp assembly 5 and the base 71, thereby facilitating the subsequent roller brush 11 to apply the passivation liquid to the cut side of the battery slices 8.

[0052] In practice, 300 to 400 battery slices 8 can be stacked in each base 71 from bottom to top. Figure 1-3 Five sets of clamp assemblies 5 are shown, and correspondingly, a set of passivation rails 7 are installed on the outside of each set of clamp assemblies 5, that is, Figure 1-3 Five groups of passivation rails 7 are shown, corresponding to five bases 71, so the passivation device can stack and passivate 1500 to 2000 battery slices 8 at a time, and the passivation efficiency is greatly improved.

[0053] In practice, the size of a common full cell is 182 mm (the length and width of a common full cell are both 182 mm), so after a common full cell is cut into two halves, the width of a half cell (i.e., a type of cell slice 8) is 91 mm. To facilitate compatibility with larger half cell sizes, the width of the base 71 is not less than 91 mm (for example, the width of the base 71 is 115 mm).

[0054] Since the width of the base 71 is not less than the width of half a cell (it should be noted that the width of the half cell is consistent with the width direction of the base 71, and the width direction of the base 71 is consistent with the moving direction of the second driving member 721 pushing the base 71 close to the roller brush 11), the cut side end of the half cell cannot be exposed outside the base 71; at this time, a foam block can be manually added to the other end of the base 71 away from the cut side end of the half cell, so that the cut side end of the half cell extends out of the base 71 by 0.5-1mm (such as 0.5mm), so that the outer peripheral surface of the roller brush 11 can contact and apply the passivation liquid to the cut side of the half cell.

[0055] Among them, see Figure 2-5The clamp assembly 5 includes a bracket 51, a clamp block 53, and a first driving member 52 fixed to the bracket 51. For example, the first driving member 52 can be a cylinder (such as the 10-axis double-rod TN16 cylinder of the Jane's pneumatic components) or other types of driving members. When the first driving member 52 is a cylinder, the cylinder can be fixed to the bracket 51 by screws.

[0056] In practice, the bracket 51 is installed (eg, welded) on the stage 6 , or the bracket 51 is disposed on the slide 722 .

[0057] The clamp block 53 is connected to the bottom of the first driving member 52, so that the first driving member 52 drives the clamp block 53 to move up and down, so that the clamp block 53 can press down on the surface of the battery slice 8 to clamp and fix multiple battery slices 8 between the clamp block 53 and the base 71. For example, the clamp block 53 can be connected to the bottom of the first driving member 52 by screws.

[0058] In one example of this embodiment, the clamp assembly 5 further includes a buffer block 54 (such as Figure 4 As shown in FIG. 5 , the buffer block 54 is disposed (e.g., glued) below the clamp block 53. The clamp block 53 clamps and fixes the plurality of battery slices 8 between the clamp block 53 and the base 71 through the buffer block 54. Specifically, the buffer block 54 is a soft material block (e.g., a soft probe, a foam block) or an elastic material block (e.g., a spring probe), so that the buffer block 54 can play a good buffering role on the battery slice 8. For example, the foam block has a low hardness, which can reduce the damage to the surface of the battery slice 8.

[0059] In another example of this embodiment, the buffer block 54 is not provided, but the clamp block 53 is directly made of a soft material block; such a clamp block 53 can also play a good buffering role for the battery slice 8.

[0060] When clamping and fixing multiple battery slices 8, the first driving member 52 drives the clamping block 53 and the buffer block 54 to move downward, so that the buffer block 54 is pressed down on the upper surface of the battery slice 8, and then the multiple battery slices 8 are clamped and fixed between the buffer block 54 and the base 71; in this way, on the one hand, the gap rate between the multiple battery slices 8 that are clamped and fixed can be greatly reduced, and the passivation liquid brushed on the cutting side can be effectively prevented from penetrating from the gaps between the multiple battery slices 8 and reaching the upper and lower surfaces of the battery slices 8, thereby greatly reducing the contamination of the upper and lower surfaces of the battery slices 8 by the passivation liquid; on the other hand, the buffer block 54 or the clamping block 53 of soft material can play a good buffering role on the battery slice 8, so that while clamping and fixing multiple battery slices 8, the damage to the surface grid lines of the battery slices 8 can also be greatly reduced. In addition, the passivation liquid will not corrode the passivation equipment, and can also prevent the aging of the passivation equipment.

[0061] In this embodiment, the plurality of battery slices 8 are stacked in a plane from bottom to top (e.g., the plane stacking of the plurality of battery slices 8 is completed by using an external suction cup) in the base 71, and the lower surface of the battery slice 8 is flat on the bottom surface of the base 71, and the cut side ends of the battery slice 8 extend out of the base 71. When the passivation liquid is applied by rotating brush, the plurality of battery slices 8 are always clamped and fixed by the clamp assembly 5; in this way, the battery slice 8 will not move with the rotation of the roller brush 11, so the damage of the battery slice 8 during the passivation process can be greatly reduced.

[0062] In summary, the working process of the passivation device of this embodiment is as follows: after the cut battery slices 8 are placed flat in the base 71, the plane moving component 72 drives the base 71 to move toward the direction close to the roller brush 11 through the second driving member 721 and the plane sliding module 723, so that the battery slices 8 in the base 71 are moved to the bottom of the clamping assembly 5; the first driving member 52 drives the clamping block 53 and the buffer block 54 to move downward, so that the buffer block 54 is pressed down on the upper surface of the battery slices 8, and then the multiple battery slices 8 are clamped and fixed between the buffer block 54 and the base 71; at the same time, the front wall of the machine drives the rotary through the shaft 122 The rotating member 13 and the roller brush 11 move downward to allow the roller brush 11 to be immersed in the passivation liquid in the tank body 4 for a period of time (such as 1-3 minutes), and then the front wall of the machine drives the rotating member 13 and the roller brush 11 to move upward through the shaft 122, so that the roller brush 11 stays at a position matching the height of the base 71; then, the rotating member 13 drives the roller brush 11 to rotate, and at the same time, the mechanical arm 12 drives the front wall of the machine and the roller brush 11 to rotate in a plane semicircle of 180°, so that the roller brush 11 can evenly rotate and apply the passivation liquid to the cut sides of the battery slices 8 of the five groups of passivation tracks 7 in sequence from left to right.

[0063] After the passivation liquid is applied, the robot arm 12 stops rotating and returns to its initial position, so that the front wall of the machine stops rotating in a 180° plane semicircle, and the rotating member 13 also stops working, so that the roller brush 11 stops rotating and applying; the first driving member 52 drives the clamping block 53 (or drives the clamping block 53 and the buffer block 54) to move upward, so that the clamping block 53 (or the buffer block 54) releases the multiple battery slices 8; the external control device controls the plane sliding module 723 to drive the slide plate 722, the second driving member 721 and the base 71 to move away from the roller brush 11, so that the multiple battery slices 8 in the base 71 are away from the roller brush 11, and the second driving member 721 drives the base 71 to move away from the roller brush 11; in this way, the passivation can be ended.

[0064] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0065] The technical solution provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A novel photovoltaic cell slice passivation device, characterized in that: It includes a brushing assembly, a plurality of clamping assemblies, and a plurality of passivation rails sequentially installed along the outer side of the brushing assembly; The passivation track includes a base for flatly stacking multiple battery slices and a flat moving component connected to the base, and the flat moving component drives the base to move so that the multiple battery slices are moved to the bottom of the clamp component; The clamp assembly is installed between the roller brush and the passivation track to clamp and fix the multiple battery slices moved below the clamp assembly between the clamp assembly and the base; The brush coating assembly includes a roller brush and a robotic arm, the inner end of the robotic arm is connected to a robotic forearm, and the robotic forearm is connected to the roller brush, so that the robotic arm drives the robotic forearm and the roller brush to move forward and backward and left and right, so that the outside of the roller brush sequentially contacts the cut sides of multiple battery slices in the base of each group of passivation tracks to achieve brushing of the passivation liquid on the outside of the roller brush.

2. A novel photovoltaic cell slice passivation device according to claim 1, characterized in that: It also includes a tank body for loading the passivation liquid, and the tank body is located below the brush coating assembly; The mechanical forearm is connected to a rotating member, and the rotating member is connected to a roller brush to drive the roller brush to rotate and apply the passivation liquid; A shaft is also connected between the mechanical front arm and the rotating member. The mechanical front arm drives the roller brush to move up and down through the shaft so that the roller brush absorbs the passivation liquid in the tank body.

3. A novel photovoltaic cell slice passivation device according to claim 1, characterized in that: The outer end of the mechanical arm is rotatably connected to the machine base; the mechanical arm is a four-axis mechanical arm, so that the four-axis mechanical arm drives the front wall of the machine to rotate 180° in a plane semicircle to realize the front and back, left and right movement of the mechanical front arm and the roller brush.

4. A novel photovoltaic cell slice passivation device according to claim 1, characterized in that: The clamp assembly includes a bracket, a clamp block and a first driving member fixed to the bracket. The clamp block is connected to the bottom of the first driving member, so that the first driving member drives the clamp block to move up and down, so that the clamp block can be pressed down on the surface of the battery slice to clamp and fix multiple battery slices between the clamp block and the base.

5. A novel photovoltaic cell slice passivation device according to claim 4, characterized in that: The clamp assembly further includes a buffer block disposed below the clamp block, and the clamp block clamps and fixes the plurality of battery slices between the clamp block and the base through the buffer block, and the buffer block is a soft material block or an elastic material block; Alternatively, the clamping block is a block of soft material.

6. A novel photovoltaic cell slice passivation device according to claim 1, characterized in that: The planar moving assembly comprises a second driving member, which is connected to the outer side of the base to push the base to approach or move away from the roller brush.

7. A novel photovoltaic cell slice passivation device according to claim 6, characterized in that: It includes a loading platform; the planar moving component also includes a planar sliding module installed on the loading platform, the second driving member is fixed on the slide plate, and the slide plate is slidably connected to the planar sliding module, so that the planar sliding module drives the slide plate to approach or move away from the roller brush.

8. A novel photovoltaic cell slice passivation device according to claim 7, characterized in that: The table top of the loading platform is tilted downward from the inside to the outside, so that the table top of the loading platform forms an inclination angle of 15° to 30° with the horizontal plane, so that multiple battery slices can be automatically arranged neatly in the base.

9. A novel photovoltaic cell slice passivation device according to claim 1, characterized in that: The number of the passivation tracks is five, and five groups of clamp assemblies are provided correspondingly.

10. A novel photovoltaic cell slice passivation device according to claim 1, characterized in that: The outer peripheral surface of the rolling brush is made of soft liquid-absorbing material or hard polishing material.

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