Solar cell slice passivation equipment

Abstract

The utility model relates to the technical field of photovoltaic cells, and discloses passivation equipment for solar cell slices, which comprises a brush coating assembly, a plurality of clamp assemblies and a plurality of passivation moving assemblies, the brushing assembly comprises a rolling brush, and the rolling brush is connected with a rotating piece for driving the rolling brush to rotationally brush the passivation solution; the passivation moving assembly comprises a plane moving assembly and a base on which a plurality of battery slices are stacked; the plane moving assembly drives the base to move to the position below the clamp assembly, and the cutting side face of the battery slice makes contact with the rolling brush. The clamp assembly comprises a first driving piece and a clamping block connected to the lower portion of the first driving piece, and the first driving piece drives the clamping block to press the surfaces of the battery slices so that the multiple battery slices can be clamped and fixed between the clamping block and the base. The passivation equipment can reduce pollution of a passivation solution to the surface of a battery slice, prevent the battery slice from being damaged, and improve the passivation efficiency.

Description

Technical Field

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

[0002] At present, photovoltaic power generation has become the mainstream of green energy. For solar cell modules, the traditional full-cell module technology uses full-cell sheets (i.e., whole uncut cells) for assembly. Large-area full-cell sheets have large internal currents and line resistances, high internal power losses, and affected power generation. The half-cell and shingled module technologies developed by laser scribing technology cut full-cell sheets into half sheets or 1 / 6 sheets (i.e., cut full-cell sheets into several cell slices), which can reduce internal currents and line resistances, reduce internal power losses, and increase power generation. At the same time, the operating temperature of solar cell modules will also decrease as internal losses decrease, giving them 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. Studies have shown that after laser cutting, the efficiency of the heterojunction half-cell cell is reduced by 0.35% abs (absolute value), the efficiency of the PERC half-cell cell is reduced by 0.1-0.2% abs, and the efficiency of the TOPCon half-cell cell is reduced by 0.2-0.3% abs. At present, industrial cell cutting technology usually adopts TLS (thermal laser separation) technology, which uses laser cutting to separate them. Compared with traditional whole-piece laser cutting, the damage is greatly reduced; but the cutting edge of the cell half-cell still has local damage, which leads to power loss of the solar cell module using the cell half-cell. Therefore, reducing the defect compounding of the cut surface of the cell half-cell and passivating it is another key process for industrial efficiency improvement.

[0004] Based on this, publication number CN206595274U provides a passivation device for half a silicon-based cell, in which the passivation liquid is brushed onto the cut surfaces of two cells through a T-shaped elbow, a brush, and a plush roller to passivate the cut surfaces. However, such a passivation device as CN206595274U can only roll the passivation liquid onto the cut surfaces of two cells at a time, resulting in low passivation efficiency; moreover, due to the lack of a clamp or other fixing device, when rolling the passivation liquid, the passivation liquid easily penetrates from the cut surface of the cell into the upper and lower surfaces of the cell, causing contamination to the upper and lower surfaces of the cell.

[0005] In addition, publication number CN112701187B also discloses a cell edge passivation device, which immerses the cut edge of each cell slice in a corrosive liquid, with the immersion depth not exceeding the distance from the first metal grid line on the cut edge to the cut edge, and suppresses the upward spread of the corrosive liquid through multiple exhaust air pipes. The passivation device can only passivate one cell slice at a time, and the passivation efficiency is low; and the immersion depth is difficult to control. If it is not well controlled, it is easy to corrode and contaminate the metal grid lines on the surface of the cell slice, and the exhaust air pipe is easy to cause the corrosive liquid to splash, causing aging of other parts of the passivation device. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and provide a passivation device for solar cell slices.

[0007] Based on this, the utility model discloses a passivation device for solar cell slices, including a brush coating component, a plurality of clamp components, and a plurality of passivation moving components sequentially installed along the outer peripheral surface of the brush coating component;

[0008] The brushing assembly includes a roller brush, and the roller brush is connected to a rotating part that drives the roller brush to rotate to brush the passivation liquid;

[0009] The clamp assembly is installed between the roller brush and the passivation moving assembly; the passivation moving assembly includes a plane moving assembly and a base for stacking multiple battery slices; the plane moving assembly is connected to the base to drive the base to move the battery slices to the bottom of the clamp assembly and make the cut side of the battery slices contact the outer peripheral surface of the roller brush;

[0010] The clamp assembly includes a first driving member and a clamping block connected to the bottom of the first driving member, so that the first driving member drives the clamping block to move up and down, so that the clamping block can be pressed down on the surface of the battery slice to clamp and fix multiple battery slices between the clamping block and the base.

[0011] Preferably, a buffer block is further provided below the clamp block, and the clamp block clamps and fixes the multiple battery slices between the clamp block and the base through the buffer block; the buffer block is a soft material block or an elastic material block;

[0012] The clamp assembly also includes a bracket for fixing the first driving member.

[0013] Preferably, the clamping block is a block of soft material.

[0014] 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.

[0015] Further preferably, a passivation device for solar cell slices of the utility model also 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, and the slide is slidably connected to the planar sliding module, so that the planar sliding module drives the slide to approach or move away from the roller brush.

[0016] Preferably, a plurality of the battery slices are stacked in sequence from bottom to top in the base, with the lower surface of the battery slices placed on the bottom surface of the base, and the cut side ends of the battery slices extend out of the base; the roller brush rotates along a plane parallel to the surface of the battery slices.

[0017] Preferably, the solar cell slice passivation device of the utility model further comprises a tank body for loading the passivation liquid, the tank body being located below the brush coating assembly; an up-and-down moving assembly is connected above the roller brush to drive the roller brush to move up and down so that the roller brush absorbs the passivation liquid in the tank body;

[0018] The rotating member comprises a rotating driving member connected to the up and down moving components and a rotating shaft connected to the lower part of the rotating driving member, and the rolling brush is threadedly connected to the lower end of the rotating shaft.

[0019] Further preferably, a passivation device for solar cell slices of the utility model also includes a device frame; the up and down moving component includes an up and down sliding module and a slider slidably connected to the up and down sliding module, the up and down sliding module is installed on the device frame, and the rotating drive component is installed on the slider.

[0020] Further preferably, the roller brush comprises a threaded sleeve and an outer sleeve body arranged on the outer circumferential surface of the threaded sleeve.

[0021] More preferably, the outer sleeve is a soft liquid-absorbing sleeve or a hard polishing sleeve.

[0022] Compared with the prior art, the utility model has at least the following beneficial effects:

[0023] The passivation device of the utility model can clamp and fix multiple battery slices stacked in the base between the clamp block and the base through the cooperation of the plane moving component of the passivation moving component, the base and the clamp block of the clamp component and the first driving component; and through the cooperation of the brushing component, the cut side surface of the battery slice can also contact the outer peripheral surface of the roller brush with the passivation liquid absorbed; in this way, the passivation liquid can be brushed on the cut side surfaces of the multiple battery slices through the roller brush, thereby realizing the passivation treatment of the cut side surfaces and reducing the power loss of the battery slice assembly. Moreover, when the passivation liquid is rotated and brushed, the multiple battery slices are always clamped and fixed between the buffer block and the base, which can greatly reduce the gap rate between the multiple battery slices that are clamped and fixed, and effectively prevent the passivation liquid brushed on the cutting side from penetrating from the gaps between the multiple battery slices and reaching the upper and lower surfaces of the battery slices, thereby greatly reducing the contamination of the upper and lower surfaces of the battery slices by the passivation liquid; and the battery slices will not move with the rotation of the roller brush, which can greatly reduce the damage to the battery slices during the passivation process; the passivation liquid will not cause corrosion to the passivation equipment, and can also prevent the aging of the passivation equipment.

[0024] Furthermore, multiple groups of passivation mobile components correspond to multiple bases, so the passivation equipment can stack and passivate multiple (such as 600 to 800) battery slices at a time, and the passivation efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of a passivation device for solar cell slices according to this embodiment.

[0026] Figure 2 The figure is a top view of a passivation device for solar cell slices according to the embodiment of the present invention.

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of a passivation device for solar cell slices according to this embodiment.

[0028] Figure 4 This is a partial enlarged view of a brush coating component in a passivation device for solar cell slices according to this embodiment.

[0029] Figure 5 It is a schematic diagram of the cross-sectional structure of a roller brush in a passivation device for solar cell slices according to this embodiment.

[0030] Figure 6 This is a partial enlarged view of a solar cell slice passivation device in this embodiment when the cell slice in the base is away from the roller brush.

[0031] Figure 7 This is a partial enlarged view of a solar cell slice in a base of a passivation device for solar cell slices according to this embodiment when the solar cell slices contact the roller brush.

[0032] Explanation of the accompanying drawings: brush assembly 1; roller brush 11; threaded sleeve 111; outer sleeve body 112; rotating member 12; rotating drive member 121; coupling 122; rotating shaft 123; up and down moving assembly 13; up and down sliding module 131; slider 132; equipment frame 2; side back panel 21; controller interface 3; trough body 4; clamp assembly 5; bracket 51; first drive member 52; clamp block 53; buffer block 54; stage 6; passivation moving assembly 7; base 71; planar moving assembly 72; second drive member 721; slide plate 722; sensor 7221; planar sliding module 723; battery slice 8. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, 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.

[0034] Example

[0035] A passivation device for solar cell slices of this embodiment, see Figure 1-3 , including an equipment frame 2, a brush coating component 1, a tank body 4 for loading a passivation liquid, a plurality of groups of fixture components 5, a stage 6 and a plurality of groups of passivation moving components 7 sequentially installed along the outer peripheral surface of the brush coating component 1.

[0036] The brushing assembly 1 includes a roller brush 11. The tank 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 moving assembly 7. The roller brush 11 is connected with an up-and-down moving assembly 13, which drives the roller brush 11 to move up and down, so that the roller brush 11 absorbs the passivation liquid in the tank body 4.

[0037] Specifically, see Figure 1 , 3 -4, the up-and-down moving assembly 13 includes an up-and-down sliding module 131 and a slider 132 slidably connected to the up-and-down sliding module 131 .

[0038] The equipment frame 2 is provided with a side back plate 21, and the upper and lower sliding modules 131 are installed on the side back plate 21 of the equipment frame 2. For example, the side back plate 21 is welded to the equipment frame 2, the upper and lower sliding modules 131 (such as the fully enclosed sliding module GBF150 model manufactured by Yuannuo Precision or other existing sliding modules) are screwed to the side back plate 21, and the bearings in the upper and lower sliding modules 131 are connected to the sliders 132.

[0039] Specifically, see Figure 3-4 The roller brush 11 is also connected to a rotating member 12 that drives it to rotate to brush the passivation liquid. The rotating member 12 includes a rotating drive member 121 and a rotating shaft 123 connected to the lower end of the rotating shaft 123. The roller brush 11 is connected to the lower end of the rotating shaft 123.

[0040] When the passivation liquid is applied by brushing, the rotary drive member 121 drives the roller brush 11 to rotate via the rotary shaft 123 , 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 .

[0041] The rotary drive member 121 is mounted on the slider 132 of the up-and-down moving assembly 13. For example, the rotary drive member 121 (such as a rotary motor, for example, a 40 servo motor 100W (0.34N / 3000 revolutions) of a stepping servo industrial control manufacturer in Wenzhou, Zhejiang) is fixed to the slider 132 by screws, and the rotary drive member 121 is connected to the rotary shaft 123 by a coupling 122 (such as an aluminum alloy plum coupling of Shenzhen Xingda Precision Enterprise Store or other existing couplings).

[0042] In practice, the upper end of the up-and-down sliding module 131 is also provided with a controller interface 3 (such as a PLC controller interface) connected to an external control device (such as a PLC device) to control the up-and-down sliding module 131 to drive the slider 132 to automatically move up and down.

[0043] When the roller brush 11 is dipped in the passivation liquid, under the control of the external control device, the upper and lower sliding modules 131 automatically drive the slider 132 to move downward, so that the rotating member 12 and the roller brush 11 move downward with the slider 132 until the roller brush 11 is completely immersed in the passivation liquid in the tank body 4, and then automatically stops moving downward. The downward movement distance can also be set by the external control device to match the depth of the passivation liquid in the tank body 4.

[0044] After the roller brush 11 absorbs the passivation liquid for a period of time (such as 1-3 minutes), under the control of the external control device, the upper and lower sliding modules 131 automatically drive the slider 132 to move upward, so that the rotating part 12 and the roller brush 11 move upward with the slider 132, and then the roller brush 11 stays at a position matching the height of the base 71 of the passivation moving component 7, so that the outer peripheral surface of the roller brush 11 can contact and apply the absorbed passivation liquid to the cut side surfaces of the multiple battery slices 8 clamped and fixed by the clamp assembly 5.

[0045] In this embodiment, see Figure 3-5 The roller brush 11 is detachably connected (such as threaded connection, key connection, pin connection or hinge connection, etc.) to the lower end of the rotating shaft 123. In this way, it is convenient to remove the roller brush 11 for cleaning and replacement.

[0046] Preferably, see Figure 5 The roller brush 11 includes a threaded sleeve 111 and an outer sleeve body 112 disposed on (eg, glued to) the outer circumference of the threaded sleeve 111 , and the rotating shaft 123 is threadedly connected to the threaded sleeve 111 .

[0047] In an example of this embodiment, the outer shell 112 is a soft liquid absorption sleeve (such as a rubber liquid absorption sleeve or a soft sponge liquid absorption sleeve). At this time, the outer shell 112 can brush the absorbed passivation liquid onto the cut side of the battery slice 8.

[0048] In another example of this embodiment, the outer sleeve 112 can also be replaced with a hard polishing sleeve to polish the cut side of the battery slice 8 to reduce defects on the cut side.

[0049] Among them, see Figure 1-3 and Figure 6-7 The passivation moving component 7 includes a plane moving component 72 and a base 71 for stacking multiple battery slices 8; the plane moving component 72 is installed under the base 71 to drive the base 71 to move the battery slice 8 to the bottom of the clamp component 5 and make the cut side of the battery slice 8 contact the outer peripheral surface of the roller brush 11.

[0050] 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.

[0051] Specifically, the planar moving component 72 also includes a planar sliding module 723 installed on the worktable 6 (such as the fully enclosed sliding module model GBF150 precision-manufactured by Yuannuo or other existing sliding modules), 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.

[0052] Furthermore, a sensor 7221 is provided on the side of the slide plate 722 close to the roller brush 11, and a controller interface 3 (such as a PLC controller interface) for connecting to an external control device (such as a PLC device) is provided on the side of the planar sliding module 723 away from the roller brush 11 (i.e., the outer side of the planar sliding module 723) to control the planar moving component 72 to automatically approach or move away from the roller brush 11.

[0053] Before applying the passivation liquid, the cut battery slice 8 is 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 follow the slide plate 722 to move toward the roller brush 11, so that the battery slice 8 in the base 71 is moved to the bottom of the clamp assembly 5, and the cut side of the battery slice 8 can contact the outer peripheral surface of the roller brush 11, so that the subsequent clamp assembly 5 can clamp and fix multiple battery slices 8, thereby facilitating the subsequent roller brush 11 to apply the passivation liquid to the cut side of the battery slice 8.

[0054] In practice, 300 to 400 battery slices 8 can be stacked in each base 71 from bottom to top. Figure 1-3 Two sets of clamp assemblies 5 are shown, and the two sets of clamp assemblies 5 are respectively located on the left and right sides of the roller brush 11; correspondingly, a set of passivation moving assemblies 7 are installed on the outside of each set of clamp assemblies 5, that is, Figure 1-3 Two groups of passivation moving components 7 are shown, corresponding to two bases 71, so the passivation device can stack and passivate 600 to 800 battery slices 8 at a time, and the passivation efficiency is greatly improved.

[0055] 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 110 mm).

[0056] 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 0.5-2mm (such as 1mm), 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.

[0057] Among them, see Figure 3 , 6-7, the 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 dual-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.

[0058] In practice, the bracket 51 is installed (eg, welded) on the stage 6 , or the bracket 51 is disposed on the slide 722 .

[0059] 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.

[0060] In one example of this embodiment, the clamp assembly 5 further includes a buffer block 54, which 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.

[0061] 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.

[0062] 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.

[0063] In this embodiment, see Figure 6-7, multiple pieces of the battery slices 8 are stacked in the base 71 from bottom to top, and the lower surface of the battery slice 8 is horizontally placed on the bottom surface of the base 71, and the cut side end of the battery slice 8 extends out of the base 71; the roller brush 11 rotates along a plane parallel to the surface of the battery slice 8. In this way, the plane of the roller brush 11 is parallel to the upper and lower surfaces of the battery slices 8 stacked in the base 71, and when the passivation liquid is applied by the roller brush, the multiple pieces of the 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.

[0064] In summary, the working process of the passivation device of this embodiment is as follows: after the cut battery slices 8 are placed in the base 71, the plane moving component 72 drives the base 71 to move toward 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, and the cut side of the battery slices 8 can contact the outer peripheral surface of the roller brush 11; 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, After the upper and lower sliding modules 131 drive the rotating member 12 and the roller brush 11 to move downward through the slider 132, so that the roller brush 11 is immersed in the passivation liquid in the tank body 4 for a period of time (such as 1-3 minutes), the upper and lower sliding modules 131 drive the rotating member 12 and the roller brush 11 to move upward through the slider 132, so that the roller brush 11 stays at a position matching the height of the base 71. At this time, the outer peripheral surface of the roller brush 11 can contact the cut side surface of the battery slice 8; then, the rotating driving member 121 drives the roller brush 11 to rotate through the rotating shaft 123, so that the roller brush 11 rotates and brushes the passivation liquid absorbed by its outer peripheral surface to the cut side surface of the battery slice 8.

[0065] After the passivation liquid is applied, the rotating part 12 stops working, so that the roller brush 11 stops rotating and applying; the first driving part 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 battery slice 8; the external control device controls the plane sliding module 723 to drive the slide plate 722, the second driving part 721 and the base 71 to move away from the roller brush 11, so that the battery slice 8 in the base 71 is away from the roller brush 11, and the second driving part 721 drives the base 71 to move away from the roller brush 11; in this way, the passivation can be ended.

[0066] 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.

[0067] 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 passivation device for solar cell slices, characterized in that: It includes a brush coating assembly, a plurality of sets of fixture assemblies, and a plurality of sets of passivation moving assemblies sequentially installed along the outer peripheral surface of the brush coating assembly; The brushing assembly includes a roller brush, and the roller brush is connected to a rotating part that drives the roller brush to rotate to brush the passivation liquid; The clamp assembly is installed between the roller brush and the passivation moving assembly; the passivation moving assembly includes a plane moving assembly and a base for stacking multiple battery slices; the plane moving assembly is connected to the base to drive the base to move the battery slices to the bottom of the clamp assembly and make the cut side of the battery slices contact the outer peripheral surface of the roller brush; The clamp assembly includes a first driving member and a clamping block connected to the bottom of the first driving member, so that the first driving member drives the clamping block to move up and down, so that the clamping block can be pressed down on the surface of the battery slice to clamp and fix multiple battery slices between the clamping block and the base.

2. A solar cell slice passivation device according to claim 1, characterized in that: A buffer block is also provided below the clamp block, and the clamp block clamps and fixes the multiple battery slices between the clamp block and the base through the buffer block; the buffer block is a soft material block or an elastic material block; The clamp assembly also includes a bracket for fixing the first driving member.

3. The passivation device for solar cell slices according to claim 1, characterized in that: The clamping block is a soft material block.

4. The passivation device for solar cell slices 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.

5. The passivation device for solar cell slices according to claim 4, 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.

6. The passivation device for solar cell slices according to claim 1, characterized in that: A plurality of battery slices are stacked in sequence from bottom to top in the base, with the lower surface of the battery slices placed on the bottom surface of the base, and the cut side ends of the battery slices extending out of the base; the roller brush rotates along a plane parallel to the surface of the battery slices.

7. The passivation device for solar cell slices according to claim 1, characterized in that: It also includes a tank body for loading the passivation liquid, the tank body is located below the brushing assembly; the upper part of the roller brush is connected with an up-and-down moving assembly to drive the roller brush to move up and down so that the roller brush absorbs the passivation liquid in the tank body; The rotating member comprises a rotating driving member connected to the up and down moving components and a rotating shaft connected to the lower part of the rotating driving member, and the rolling brush is threadedly connected to the lower end of the rotating shaft.

8. The passivation device for solar cell slices according to claim 7, characterized in that: It also includes an equipment frame; the up and down moving component includes an up and down sliding module and a slider slidably connected to the up and down sliding module, the up and down sliding module is installed on the equipment frame, and the rotating drive component is installed on the slider.

9. The passivation device for solar cell slices according to claim 7, characterized in that: The roller brush comprises a threaded sleeve and an outer sleeve body arranged on the outer peripheral surface of the threaded sleeve.

10. The passivation device for solar cell slices according to claim 9, characterized in that: The outer sleeve is a soft liquid absorbing sleeve or a hard polishing sleeve.

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