A method for cleaving a solar cell sheet and a cleaving device thereof

Abstract

The present invention proposes a method for splitting a solar cell and a splitting device thereof. The method mainly uses two laser beams to ablate and heat along the line to be split of the cell. At the same time, a low thermal conductivity and high temperature resistant material support platform for the cell and the heated cell to be split line segment rapidly form a temperature gradient, so that the cell to be split line segment simultaneously generates large compressive stress and shear stress, so that the cell breaks along the line to be split, and the cell is split. The equipment used in this method mainly includes: a fixing frame for installing various components; a cell transport part for transmitting the solar cell so that the solar cell moves along the split line path relative to the focus of the first laser beam and the second laser beam; a low thermal conductivity and high temperature resistant material support platform for carrying the cell; and a laser assembly for generating the first laser beam and the second laser beam.

Description

Technical Field

[0001] The present invention relates to a laser beam scratching processing technology for solar cell sheets, and in particular to a scratching method for solar cell sheets. The present invention also relates to a special scratching device used in the scratching method. Background Art

[0002] With the rapid promotion and application of stacking assembly technology, the technology of solar cell splitting has developed rapidly. The core technology of stacking assembly technology is the splitting technology of solar cells. In addition to using a laser to first scratch a crack on the surface of the solar cell, and then mechanically breaking the solar cell, the existing solar cell splitting technology also uses two lasers, one laser is used to scratch the cell splitting line, and the other laser heats the cell splitting line, and then splits the cell under the action of a cooling medium, such as the patent "A method for cutting solar cells and its cutting equipment" (CN111151896A) applied by the applicant. However, in the process of using the method of the patented technology to split the cell, it is found that when the cooling medium acts on the heated cell, on the one hand, the surface of the cell will be contaminated, and on the other hand, the stability of the cooling medium is difficult to control, which will form a scratch defect at the cell splitting position. In addition, the existing carrier cannot observe the solar cell splitting condition from the back of the laser splitting. Therefore, it is necessary to invent a new technology for splitting the cell without using a cooling medium. Summary of the invention

[0003] The present invention solves the technical problems existing in the prior art and provides a method for cleaving a solar cell sheet and a cleaving device thereof.

[0004] In order to avoid the problem of cooling medium causing contamination to the battery cell and to overcome the technical problem that it is difficult to accurately control the cooling medium when using the cooling medium to form a temperature difference on the battery cell, resulting in defects in the battery cell scratching, the present invention adopts a new technology for scratching the battery cell without using a cooling medium.

[0005] The present invention is achieved through the following technical solutions.

[0006] First, the first laser beam and the second laser beam are applied to the overlapping position of the cell's line to be split, and then the low thermal conductivity and high temperature resistant material carrier of the cell transmission part carries the solar cell through the first laser beam and the second laser beam, wherein the first laser beam ablates a groove of a certain length on the cell's line to be split, and the second laser beam heats the cell's line to be split along the groove and its extension line, and the solar cell breaks along the line to be split, completing the splitting of the solar cell.

[0007] Furthermore, the thermal conductivity of the low thermal conductivity and high temperature resistant material is less than 8W / mK, and the thermal expansion coefficient of the material at the normal use temperature is less than 7×10 -6 / ℃, softening temperature is greater than 900℃.

[0008] Furthermore, the low thermal conductivity and high temperature resistant material is one of the low thermal conductivity and high temperature resistant materials having the material properties as described above, such as aluminum silicate refractory fiber, calcium silicate insulation material, quartz glass material, etc.

[0009] Furthermore, in order to facilitate the staff to observe the scratch condition of the solar cell on the back of the scratch surface of the cell, the low thermal conductivity and high temperature resistant material is a light-transmitting material with a visible light transmittance of greater than 70%, so that the staff can observe the scene on the back of the low thermal conductivity and high temperature resistant material through the low thermal conductivity and high temperature resistant material, and the staff can observe the scratch condition of the solar cell panel from the back of the supporting platform. The light-transmitting material is one of quartz glass material, high silica glass material, aluminosilicate glass material, borosilicate glass material, potassium-lime glass material, and glass ceramic material, wherein the silicon dioxide content of the high silica glass material is greater than 96%, and the aluminosilicate glass material has a silicon dioxide content of greater than 96%. The SiO2 content of the material is 60%-75%, the Al2O3 content is 10-15%, and the Na2O content is 10%-15%; the SiO2 content of the borosilicate glass material is 70%-80%, the B2O3 content is 6%-15%, the Na2O content is 4%-10%, and the Al2O3 content is 0-5%; the SiO2 content of the potassium-lime glass material is 60%-75%, the CaO content is 5%-12%, and the K2O content is 12%-18%; the glass-ceramic material is a material with SiO2-Al2O3 as the base, with a SiO2 content of 55%-65% and an Al2O3 content of 6%-8%.

[0010] Furthermore, in order to first scratch a groove with a certain length on the surface of one end of the battery cell, the first laser beam can be selected as a pulsed laser beam to scratch a splitting line on the battery cell.

[0011] Furthermore, in order to quickly heat the cell splitting line, the second laser beam is a continuous thermal laser beam, which heats the cell splitting line and its extension line.

[0012] Furthermore, in order to unify the reference, the first laser beam and the second laser beam are focused on the same starting point of the to-be-split line of the cell.

[0013] Furthermore, the splitting line formed by the first laser beam on the surface of the cell is a discontinuous or continuous splitting line along the direction of the to-be-split line of the cell.

[0014] Furthermore, in order to cleave the cell in a pre-designed direction, during the process of the first laser beam and the second laser beam acting on the cell, the first laser beam and the second laser beam may move relative to the cell along the direction of the to-be-cleaved line.

[0015] Furthermore, in order to cleave the cell in a pre-designed direction, during the process in which the first laser beam and the second laser beam act on the cell, the cell may also move relative to the first laser beam and the second laser beam along the direction of the line to be cleaved.

[0016] Furthermore, in order to make the two laser beams produce different effects on the battery cell respectively, the distance between the first laser beam and the second laser beam reaching the inside of the battery cell and the surface of the battery cell is achieved by adjusting the height position of the battery cell.

[0017] The present invention also provides a cleaving device for cleaving a solar cell sheet, which is used to implement the above-mentioned cleaving method of the solar cell sheet, and the cleaving device at least comprises:

[0018] A fixing frame, used for carrying and installing components for transporting the battery sheet and generating the first laser beam and the second laser beam respectively;

[0019] A cell sheet transmission unit installed on the fixing frame is used to transmit the solar cell sheet so that the solar cell sheet moves along the path of the to-be-split line relative to the focal points of the first laser beam and the second laser beam to achieve the splitting of the cell sheet;

[0020] A laser assembly mounted on the fixing frame and located above the cell transmission portion, for generating a first laser beam and a second laser beam;

[0021] The low thermal conductivity and high temperature resistant material support platform installed on the solar cell transmission part is used to make the heated part of the solar cell segment to be split react with the normal temperature of the low thermal conductivity and high temperature resistant material after the segment to be split of the solar cell is heated by the laser beam, so as to quickly form a high and low temperature difference in the segment to be split of the solar cell.

[0022] Furthermore, in order to allow the cells to be cleaved by the laser beam in sequence, the structure of the cell transmission unit at least includes:

[0023] A horizontal driving assembly installed on the base of the fixing frame is used to drive the low thermal conductivity and high temperature resistant material bearing platform to realize reciprocating motion thereon, so that a plurality of battery cells pass through the positions of the focusing points of the first laser beam and the second laser beam in sequence and smoothly;

[0024] A device for adjusting the vertical distance between the first laser beam reaching the inside of the battery cell and the surface of the battery cell.

[0025] Furthermore, the thermal conductivity of the low thermal conductivity and high temperature resistant material carrier is less than 8W / mK, and the thermal expansion coefficient of the material at the normal use temperature is less than 7×10 -6 / ℃, softening temperature is greater than 900℃.

[0026] Furthermore, the low thermal conductivity and high temperature resistant material supporting platform is a low thermal conductivity and high temperature resistant material supporting platform with the material properties as described above, such as a quartz glass supporting platform, an aluminum silicate refractory fiberboard supporting platform, a calcium silicate insulation material, or the like.

[0027] Furthermore, in order to facilitate the staff to observe the scratch condition of the solar cell on the back of the scratch surface of the cell, the low thermal conductivity and high temperature resistant material support platform is a support platform made of a light-transmitting material, and the visible light transmittance is greater than 70%, such as a quartz glass support platform, a high silica glass support platform, an aluminosilicate glass support platform, a borosilicate glass support platform, a potassium-lime glass support platform, and a glass ceramic support platform, wherein the silicon dioxide content of the high silica glass material is greater than 96%, the SiO2 content of the aluminosilicate glass material is 60% to 75%, and the Al2O3 content is 10 ~15%, Na2O content is 10%~15%, the SiO2 content of borosilicate glass material is 70%~80%, B2O3 content is 6%~15%, Na2O content is 4%~10%, Al2O3 content is 0~5%, the SiO2 content of potassium-lime glass material is 60%~75%, CaO content is 5%~12%, K2O content is 12%~18%, glass-ceramic material is a material with SiO2-Al2O3 as the base, SiO2 content is 55%~65%, and Al2O3 content is 6%~8%.

[0028] Furthermore, in order to adjust the vertical distance between the laser beam reaching the inside of the cell and the cell surface, the device may be: a lifting drive assembly installed at the end of the horizontal drive assembly and the drive end is located at the bottom of the support platform.

[0029] Furthermore, in order to adjust the vertical distance between the laser beam reaching the inside of the cell and the surface of the cell, the device may also be a device for adjusting the position of the first laser beam generating component.

[0030] Furthermore, in order to realize the two-beam laser scratching of the battery cell, the laser assembly includes: a first laser generating a first laser beam; and a second laser generating a second laser beam.

[0031] Furthermore, in order to adjust the angle and direction of the laser beam directed toward the solar cell, the laser assembly further comprises: a device for adjusting the angle and irradiation position of the laser beam generated by the first laser and the second laser.

[0032] The technical effects of the present invention are:

[0033] The carrier platform of the cell transmission part of the present invention is a low thermal conductivity and high temperature resistant material carrier platform. When the low thermal conductivity and high temperature resistant material carrier platform carries the solar cell and passes through the focal points of the first laser beam and the second laser beam, the laser beam acts on the solar cell to-be-split line section to perform splitting on the solar cell to-be-split line section. The low thermal conductivity and high temperature resistant material in the present invention has the characteristics of extremely low heat absorption coefficient, extremely low thermal conductivity, extremely low thermal expansion coefficient and the like. When the laser beam acts on the solar cell to-be-split line, the cell rapidly forms a high and low temperature difference due to the high temperature of the laser and the normal temperature of the low thermal conductivity and high temperature resistant material carrier platform. The material at the cell to-be-split line expands due to the laser heating, and the compressive stress in the heated area increases. At the same time, the low thermal conductivity and high temperature resistant material carrier platform at normal temperature causes the heated area to quickly form a cooling area, and the tensile stress around the heated area also increases accordingly, thereby forming a tangential tensile stress at the cell to-be-split line section at the same time. In the to-be-split area where the two stress modes are superimposed, the cell rapidly splits along the to-be-split line to complete the splitting of the cell.

[0034] This method avoids the contamination of the battery cell by the cooling medium, and overcomes the problem of difficulty in accurately controlling the cooling medium when the cooling medium forms a temperature difference, which leads to the technical problem of defects in the battery cell scratching. The present invention uses a low thermal conductivity and high temperature resistant material support platform, which increases the convenience of operation and improves the quality and efficiency of battery cell slicing.

[0035] The present invention also uses a low thermal conductivity and high temperature resistant material with good light transmittance, such as quartz glass. The use of the light-transmitting material allows the staff to observe the scratching state of the other side of the solar cell laser scratched from the back side of the low thermal conductivity and high temperature resistant material support platform, so as to fully control the solar cell scratching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a method for scratching a solar cell sheet in the present invention;

[0037] Figure 2 A schematic diagram of the axial structure of a solar cell splitting device;

[0038] Figure 3 for Figure 2 A schematic diagram of the axial structure of the positional relationship between the first laser and the fixed frame,

[0039] Figure 4 for Figure 2 A schematic diagram of the axial structure of the positional relationship between the second laser and the fixed frame,

[0040] Figure 5 for Figure 2 A schematic diagram of the axial structure showing the positional relationship between the cell transmission unit and the fixing frame.

[0041] Figure 6 This is a schematic diagram of the axial structure of a device for splitting a solar cell sheet from another angle.

[0042] Figure 7 for Figure 2 A simplified axial structural diagram of the positional relationship between a first laser and a second laser of a solar cell splitting device and a solar cell to be split on a solar cell transmission part,

[0043] Figure 8 for Figure 7 A simplified axial structural diagram of the positional relationship between the first laser and the second laser after the cell to be split is split.

[0044] In the figure: a fixing frame 10, a laser assembly 20, a cell transmission unit 30, a first laser 21, a second laser 22, a first laser up and down fine-tuning assembly 23, a first laser horizontal fine-tuning assembly 24, a second laser fine-tuning assembly 25, a first connecting plate 26, a second connecting plate 27, a column 28, a horizontal driving assembly 31, a lifting driving assembly 32, a low thermal conductivity and high temperature resistant material support platform 33, a solar cell 100, and a line to be split 100-1.

[0045] Since the laser itself has its own frequency, the splitting line is actually composed of countless splitting points. The splitting lines described in the following embodiments all include splitting points. DETAILED DESCRIPTION

[0046] Combine the following Figures 1 to 8 Embodiments of the present invention will be described.

[0047] Embodiment 1:

[0048] Figure 1 The method of cleaving a solar cell sheet is illustrated. In this embodiment, considering the economical efficiency and the material performance, the low thermal conductivity and high temperature resistant material supporting platform is a quartz glass supporting platform.

[0049] First, the first laser beam and the second laser beam are applied to the overlapped position of the cell's line to be split, and then the quartz glass support platform of the cell transmission part carries the solar cell 100 through the first laser beam and the second laser beam, wherein the first laser beam ablates a groove of a certain length on the cell's line to be split 100-1, and then the second laser beam heats the cell's line to be split along the split line and its extension line, and the solar cell breaks along the line to be split, thereby completing the scratching of the solar cell.

[0050] When the quartz glass support platform carries the solar cell and passes through the focal points of the first laser beam and the second laser beam, the laser beam acts on the section of the solar cell to be split line to ablate and heat the section of the solar cell to be split line. Quartz glass has the characteristics of non-absorption of heat, non-heat conduction and high light transmittance. When the laser beam acts on the section of the solar cell to be split line, the high temperature of the cell due to the laser and the normal temperature of the quartz glass support platform quickly form a high and low temperature difference. The material at the section of the cell to be split line expands due to the laser heating, and the compressive stress in the heated area increases. At the same time, the quartz glass support platform at normal temperature quickly forms a cooling area in the heated area, and the tensile stress around the heated area also increases, so that the section of the cell to be split line forms a tangential tensile stress at the same time. In the section to be split where the two stress modes are superimposed, the cell is rapidly split along the line to be split, and the cell is split.

[0051] Figure 2 The axial structure of the solar cell splitting device is shown in the figure. The fixing frame 10 is arranged at the bottom of the splitting device, and is used to carry and install the components for transporting the solar cell 100 and generating the first laser beam and the second laser beam respectively;

[0052] The cell transfer unit 30 is mounted on the fixing frame 10 and is used to move each solar cell 100 to be cleaved along the path of the cleaving line 100 - 1 relative to the focal points of the first laser beam and the second laser beam to achieve cleaving of the cell;

[0053] The laser assembly 20 is mounted on the fixing frame 10 and is located above the cell transmission unit 30 , and is used to generate a first laser beam and a second laser beam.

[0054] The quartz glass support platform is installed above the cell transmission part 30, and is used to quickly form a high and low temperature difference in the solar cell segment to be split due to the action of the heated part of the solar cell segment to be split and the normal temperature of the quartz glass when the segment to be split is heated by the laser beam.

[0055] Figure 3 The installation position and structural composition of the first laser 21 are illustrated. Among them, the column 28 is installed on the fixing frame 10, the first connecting plate 26 is installed on the column 28 and can be adjusted up and down, the first laser up and down fine-tuning assembly 23 is installed on the first connecting plate 26, the first laser horizontal fine-tuning assembly 24 is installed on the first laser up and down fine-tuning assembly 23, and the first laser 21 is fixedly installed on the adjustment end of the first laser horizontal fine-tuning assembly 24;

[0056] The vertical distance of the first laser 21 relative to the solar cell 100 can be roughly adjusted by the first connecting plate 26, and then finely adjusted by the first laser up and down fine-tuning assembly 23. The horizontal position of the first laser 21 can be finely adjusted by the first laser horizontal fine-tuning assembly 24, so that the focal point of the first laser beam is located on the line 100-1 to be split of the solar cell 100.

[0057] Figure 4 The installation position and structural composition of the second laser 22 are illustrated. The second connecting plate 27 is installed on the column 28 and can be adjusted up and down. The second laser fine-tuning assembly 25 is installed on the second connecting plate 27. The second laser 22 is fixedly installed on the adjustment end of the second laser fine-tuning assembly 25.

[0058] The distance of the second laser 22 relative to the solar cell can be roughly adjusted by the second connecting plate 27 and then finely adjusted by the second laser fine-tuning assembly 25 so that the focus of the second laser beam is located on the to-be-split line 100 - 1 of the solar cell 100 .

[0059] Figure 5 The installation position and structural composition of the battery cell transmission unit 30 are shown in FIG.

[0060] The horizontal driving assembly 31 is fixedly mounted on the base of the fixing frame 10, the lifting driving assembly 32 is fixedly mounted on the driving end of the horizontal driving assembly 31, and the quartz glass bearing platform is mounted on the driving end of the lifting driving assembly 32. The quartz glass bearing platform is used to carry the solar cell 100, so that when the to-be-split line 100-1 of the solar cell 100 passes through the laser assembly 20, the laser beam acts on the to-be-split line 100-1 of the solar cell 100, so that the solar cell 100 is split;

[0061] The horizontal drive assembly 31 can reciprocate along the direction of the to-be-split line 100-1, and the mechanical structure used includes but is not limited to: a guide rail screw mechanism driven by a motor, a gear rack mechanism, a guide rail belt transmission mechanism or a cylinder transmission mechanism driven by compressed air;

[0062] The lifting drive assembly 32 can reciprocate in a direction perpendicular to the solar cell 100, and can reciprocate along the direction of the to-be-split line 100-1 driven by the horizontal drive assembly 31. The mechanical structure used includes but is not limited to: a guide rail screw mechanism driven by a motor, a gear rack mechanism, a guide rail belt transmission mechanism, or a cylinder transmission mechanism driven by compressed air;

[0063] The quartz glass supporting platform fixes the solar cell 100 on its upper surface by vacuum adsorption, so as to ensure that the relative position of the solar cell 100 does not change during transportation.

[0064] Figure 7 The schematic diagram shows the movement direction of each component when the solar cell 100 is cut. The first laser 21 and the second laser 22 are fixedly arranged, and the cell transfer part 30 and the quartz glass support platform above it move with the cell 100 in the direction of the arrow to complete the cutting of the cell.

[0065] Embodiment 2:

[0066] Figure 8 The schematic diagram shows the movement direction of each component when the battery cell 100 is cut. The difference between the second embodiment and the first embodiment is that the quartz glass support table and the battery cell 100 are fixedly arranged, and the first laser 21 and the second laser 22 can move in the direction of the arrow under the drive of the motion mechanism to complete the cutting of the battery cell 100.

[0067] Working principle: manually adjust the first laser up and down fine-tuning assembly 23 and the first laser horizontal fine-tuning assembly 24 so that the focal point of the laser emitted by the first laser 21 is located on the to-be-split line 100-1 in the middle of the solar cell 100; manually adjust the second laser fine-tuning assembly 25 so that the focal point of the laser emitted by the second laser 22 coincides with the focal point of the first laser.

[0068] The lifting drive assembly 32 moves to the front end of the equipment driven by the horizontal drive assembly 31, and the quartz glass bearing platform 33 rises to the highest point to carry the solar cell 100 supplied from the previous station. When the solar cell 100 is placed on the quartz glass bearing platform, the solar cell 100 is fixed at the center of the quartz glass bearing platform, and the horizontal drive assembly 31 starts to drive the lifting drive assembly 32 and the quartz glass bearing platform to move to the rear of the equipment by a distance of at least one solar cell 100;

[0069] During the movement, the focal points of the first laser beam and the second laser beam scan the to-be-split line 100-1 of the cell, ablate and heat the to-be-split line of the cell, and at the same time, the heated to-be-split section of the cell forms a temperature difference very quickly under the action of the room-temperature quartz glass, causing stress increase in both compressive stress and tangential stress, thereby completing the splitting of the solar cell 100;

[0070] The cleaved solar cell 100 is no longer fixed on the quartz glass support platform 33, and the solar cell 100 is transferred to the next station. The quartz glass support platform is lowered to a low position and moved back to the front end of the equipment, waiting for the next solar cell 100 to be cleaved to arrive.

[0071] In addition, in other embodiments, the low thermal conductivity and high temperature resistant material support platform 33 can also be set to an aluminum silicate refractory fiberboard support platform, a calcium silicate insulation material support platform, and the low thermal conductivity and high temperature resistant material support platform 33 can also be set to a quartz glass support platform with good visible light transmittance, a high silica glass support platform, an aluminosilicate glass support platform, a borosilicate glass support platform, a potassium calcium glass support platform, or a glass ceramic support platform.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for cleaving a solar cell, characterized in that: Firstly, a first laser beam and a second laser beam are applied to the overlapped position of the cell sheet's line to be split, and then a low-heat-conductivity and high-temperature-resistant material carrier of the cell sheet transmission part carries the solar cell sheet (100) through the first laser beam and the second laser beam, wherein the first laser beam ablates a groove having a certain length on the cell sheet's line to be split (100-1), and then the second laser beam heats the cell sheet's line to be split along the groove and its extension line, so that the solar cell sheet is broken along the line to be split, thereby completing the splitting of the solar cell sheet.

2. The method for cleaving a solar cell according to claim 1, wherein: The thermal conductivity of the low thermal conductivity and high temperature resistant material is less than 8W / mK, and the thermal expansion coefficient is less than 7×10 -6 / ℃, softening temperature is greater than 900℃.

3. The method for cleaving a solar cell according to claim 1 or 2, characterized in that: The low thermal conductivity and high temperature resistant material is a light-transmitting material, and the visible light transmittance of the low thermal conductivity and high temperature resistant material is greater than 70%, so that the staff can observe the scene on the back of the low thermal conductivity and high temperature resistant material through the low thermal conductivity and high temperature resistant material.

4. The method for cleaving a solar cell according to claim 3, characterized in that: The low thermal conductivity and high temperature resistant material is one of quartz glass material, high silica glass material, aluminosilicate glass material, borosilicate glass material, potassium-lime glass material, and glass ceramic material.

5. A cleaving device for cleaving a solar cell sheet, comprising at least: A fixing frame (10) for carrying and installing components for transporting the battery sheet and generating the first laser beam and the second laser beam respectively; A cell sheet transmission unit (30) mounted on a fixing frame (10) and used for transmitting a solar cell sheet (100) so that the solar cell sheet (100) moves along a path of a line to be split (100-1) relative to a focal point of the first laser beam and the second laser beam; A laser assembly (20) mounted on a fixing frame (10) and located above a cell sheet transmission portion (30), and used to generate a first laser beam and a second laser beam; The low thermal conductivity and high temperature resistant material support platform (33) installed on the solar cell transmission part (30) is used to allow the heated part of the solar cell segment to be split to react with the low thermal conductivity and high temperature resistant material at room temperature after the segment to be split is heated by the laser beam, so as to quickly form a high and low temperature difference in the segment to be split.

6. The cleaving device for cleaving a solar cell according to claim 5, characterized in that: The structure of the battery cell transmission unit (30) at least comprises: A horizontal driving assembly (31) mounted on a fixed frame base is used to drive a low-thermal-conductivity and high-temperature-resistant material carrier (33) to achieve reciprocating motion thereon, so that a plurality of solar cell sheets (100) pass smoothly and sequentially through the lower ends of the focusing points of the first laser beam and the second laser beam; A device for adjusting the vertical distance between a first laser beam reaching the inside of a cell and the surface of a solar cell (100), comprising: a lifting drive component (32) mounted at the end of a horizontal drive component (31) and having a drive end located at the bottom of a low thermal conductivity and high temperature resistant material support platform (33), or a device for adjusting the position of a first laser beam generating component.

7. The cleaving device for cleaving a solar cell according to claim 5, characterized in that: The laser assembly (20) comprises: a first laser (21) for generating a first laser beam; a second laser (22) for generating a second laser beam; A device for adjusting the angle and irradiation position of laser beams generated by a first laser (21) and a second laser (22).

8. The cleaving device for cleaving a solar cell according to claim 5 or 6, characterized in that: The low heat conductivity and high temperature resistant material support platform (33) has a thermal conductivity of less than 8 W / mK and a thermal expansion coefficient of less than 7×10 -6 / ℃, softening temperature is greater than 900℃.

9. The cleaving device for cleaving a solar cell according to claim 8, characterized in that: The low thermal conductivity and high temperature resistant material support platform (33) is a low thermal conductivity and high temperature resistant material support platform with a visible light transmittance greater than 70%.

10. The cleaving device for cleaving a solar cell according to claim 9, characterized in that: The low thermal conductivity and high temperature resistant material support platform (33) is one of a quartz glass support platform, a high silica glass support platform, an aluminosilicate glass support platform, a borosilicate glass support platform, a potassium-lime glass support platform, and a glass ceramic support platform.

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