A solar cell assembly convenient for welding at low temperature

Abstract

The invention relates to the technical field of solar power generation, and discloses a solar cell assembly which is convenient for welding at low temperature, wherein guide blocks are fixedly installed at the positions of the four corners of the outer side of a battery panel inside an outer shell, a guide cavity is provided inside the guide blocks, oil pipes connected with the guide cavity are symmetrically fixedly installed at both sides of the battery panel inside the outer shell, fixed blocks are fixedly installed in the middle of the upper and lower sides inside the outer shell, a heat dissipation hole connected with a cylindrical hole is provided at the bottom of the outer shell, the top of the guide cavity passes through the inner wall of the guide block and is movably sleeved with a pressure rod, the top of the pressure rod is fixedly connected with tempered glass, a corrugated pipe is fixedly connected between the bottom of the pressure rod and the bottom wall of the guide cavity, and the heat dissipation and sealing performance of the battery assembly at high temperature are improved by improving the outer shell structure, while the stability is also guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of solar power generation, in particular to a solar cell assembly which is convenient for welding at low temperature. Background Art

[0002] Solar power generation is a widely used power generation method nowadays. The general solar power generation module is to solder silicon wafers together at low temperature, then install them on the back panel, and then use EVA film to bond them to the tempered glass, and finally fix them with an aluminum alloy frame on the outside to form a complete solar cell module. However, there are still some problems in the installation and use of conventional solar cell module structures:

[0003] Solar cell modules are installed in an integrated manner, and when they are working, they also need to ensure that sunlight can fully irradiate the silicon wafer. Therefore, a very high temperature will be generated in the solar cell module. The solar cell module will increase the light conversion efficiency as the temperature rises within a certain temperature range, but when the temperature exceeds the limit, the power generation efficiency of the silicon wafer will be greatly reduced, and its service life will also be affected.

[0004] Moreover, the solar cell module must be absolutely sealed after assembly, because once water leakage occurs, the EVA film will fail, which will cause the silicon wafer to be damaged and unable to work. However, the existing solar cell modules are used directly after assembly, which will cause the heat sealing effect of silicone to deteriorate under high temperature, affecting its sealing performance.

[0005] At the same time, solar cell modules can only work fully when the sun is shining. They will not work in bad weather or at night. In places with good sunshine, the wind is strong and it is cold at night. This will cause the solar cell modules to be affected by the wind more, causing instability and affecting subsequent work. Summary of the invention

[0006] In view of the shortcomings of the above-mentioned background technology, the present invention provides a solar cell module that is easy to weld at low temperature, has the advantages of good sealing, good heat dissipation effect and good stability, and solves the problems raised by the background technology.

[0007] The present invention provides the following technical solution: a solar cell assembly that is convenient for welding at low temperature, comprising a shell, a battery panel fixedly installed inside the shell, battery sheets evenly arranged on the top of the battery panel, tempered glass bonded to the top surface of the battery panel, a top cover fixedly installed on the top of the shell in contact with the top surface of the tempered glass, a mounting head fixedly installed on the bottom of the shell, guide blocks fixedly installed at the positions of the four corners of the outer side of the battery panel inside the shell, a guide cavity is provided inside the guide block, oil pipes connected to the guide cavity are symmetrically fixedly installed on both sides of the battery panel inside the shell, a fixing block is fixedly installed in the middle of the upper and lower sides inside the shell, an adjustment sleeve connected to the guide cavity is fixedly installed on one side of the guide block close to the fixed block, a sleeve column is movably sleeved on the outer side of the adjustment sleeve, a top column is fixedly connected to one end of the sleeve column close to the fixed block, a reset spring is fixedly connected between the outer ring of the top column and the side wall of the fixed block, a cylindrical hole is provided inside the fixed block, and a heat dissipation hole connected to the cylindrical hole is provided at the bottom of the shell.

[0008] Preferably, a fan blade with a motor is fixedly installed inside the cylindrical hole, a touch switch is fixedly installed on the side wall of the fixed block corresponding to the top column, there is a gap between the top column and the touch switch when the solar cell assembly is installed, the heat dissipation hole is conical in shape, and the control motor of the fan blade is connected to the power generation system.

[0009] Preferably, the top of the guide cavity passes through the inner wall of the guide block and is movably sleeved with a pressure rod, the top of the pressure rod is fixedly connected to the tempered glass, a first bellows is fixedly connected between the bottom of the pressure rod and the bottom wall of the guide cavity, an air outlet is provided at the bottom of the outer shell at the bottom surface of the guide cavity, and a one-way valve is fixedly installed between the bottom of the guide cavity and the air outlet.

[0010] Preferably, the pressure rod is I-shaped and the diameter of the top end is smaller than the diameter of the bottom end. The middle of the pressure rod is located exactly between the guide cavity and the connecting opening of the oil pipe and the adjustment sleeve. Piston sealing is adopted between the pressure rod and the guide cavity, and between the adjustment sleeve and the sleeve column.

[0011] Preferably, a hydraulic cavity is provided at the bottom of the shell at the position of the mounting head, a top block is movably sleeved on the top of the hydraulic cavity, an air outlet with a one-way valve is provided in the middle of the bottom surface of the hydraulic cavity, and a second bellows is fixedly connected between the bottom surface of the top block and the bottom wall of the hydraulic cavity.

[0012] Preferably, a hydraulic hole communicating with the hydraulic cavity is provided inside the mounting head, a pressure piston is movably sleeved inside the hydraulic hole, and the mounting heads are symmetrically distributed.

[0013] Preferably, the middle section of the sleeve column is conical and the height of its lowest point is higher than the height of the top of the top block.

[0014] Preferably, the one-way valves installed in the air outlet holes at the bottom of the guide chamber and the hydraulic chamber can only allow airflow from top to bottom.

[0015] The present invention has the following beneficial effects:

[0016] 1. By setting an oil pipe inside the shell, and also working together through the guide block, adjustment sleeve, sleeve column, top column and other structures, compared with the existing technology, the heat transfer oil in the oil pipe will absorb heat when the temperature rises, and when the temperature is too high, the expansion of the heat transfer oil will directly act on the top column to trigger the touch switch, so that the heat is dissipated in the fixed block through the fan blades, and the cooperation of the cylindrical hole and the heat dissipation hole can dissipate the temperature inside the shell well and avoid water ingress, effectively ensuring the power generation efficiency and service life.

[0017] 2. A guide cavity is opened inside the guide block, and a pressure rod fixedly connected to the tempered glass is sleeved inside the guide cavity. Compared with the prior art, the change of oil pressure inside the guide cavity is used to bring about the change of force on the pressure rod, and then the tempered glass is driven to achieve the pressing force on the battery panel, thereby ensuring better sealing. At the same time, the bellows and the one-way valve are used to limit its return to ensure the stability of the seal.

[0018] 3. By providing a top block to cooperate with the mounting head, when the heat transfer oil changes with the temperature, it can drive the sleeve column to realize the pressure change on the top block. Compared with the existing technology, the shrinkage of the heat transfer oil caused by the temperature drop is used to realize the downward pressure on the top block, so that pressure can be applied to the hydraulic cavity and the hydraulic hole, thereby increasing the clamping force between the mounting head and the mounting bracket, thereby improving the stability of the solar cell module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic top view of the overall structure of the present invention;

[0020] Figure 2 It is a bottom view schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 4 It is a transverse half-section view of the middle part of the structure of the present invention;

[0023] Figure 5 This is an axial half-section view of the structural sleeve of the present invention;

[0024] Figure 6 It is a longitudinal half-section view of the middle part of the structure of the present invention;

[0025] Figure 7 for Figure 5 Enlarged view of point A in the middle.

[0026] In the figure: 1. shell; 101. heat dissipation hole; 102. air outlet; 103. hydraulic chamber; 2. top cover; 3. battery panel; 301. silicon wafer; 4. tempered glass; 5. mounting head; 501. hydraulic hole; 502. pressure piston; 6. guide block; 601. guide chamber; 7. oil pipe; 8. fixing block; 801. cylindrical hole; 9. adjusting sleeve; 10. sleeve column; 11. top column; 12. reset spring; 13. touch switch; 14. fan blade; 15. pressure rod; 16. first bellows; 17. one-way valve; 18. top block; 19. second bellows. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Please see attached Figure 1-5A solar cell assembly that is convenient for welding at low temperatures comprises a shell 1, a battery panel 3 is fixedly installed inside the shell 1, battery sheets 301 are evenly arranged on the top of the battery panel 3, a tempered glass 4 is bonded to the top surface of the battery panel 3, a top cover 2 is fixedly installed on the top surface of the tempered glass 4 on the top of the shell 1, a mounting head 5 is fixedly installed on the bottom of the shell 1, guide blocks 6 are fixedly installed at the positions of the four corners outside the battery panel 3 inside the shell 1, a guide cavity 601 is opened inside the guide block 6, oil pipes 7 connected to the guide cavity 601 are symmetrically fixedly installed on both sides of the battery panel 3 inside the shell 1, heat transfer oil is contained in the oil pipe 7, and the oil pipe 7 can absorb heat and expand, a fixing block 8 is fixedly installed in the middle of the upper and lower sides inside the shell 1, an adjusting sleeve 9 connected to the guide cavity 601 is fixedly installed on the side of the guide block 6 close to the fixing block 8, a sleeve column 10 is movably sleeved on the outer side of the adjusting sleeve 9, a top column 11 is fixedly connected to the end of the sleeve column 10 close to the fixing block 8, and the outer circle of the top column 11 is connected to the A reset spring 12 is fixedly connected between the side walls of the fixed block 8, a cylindrical hole 801 is opened inside the fixed block 8, a heat dissipation hole 101 connected to the cylindrical hole 801 is opened at the bottom of the shell 1, a fan blade 14 with a motor is fixedly installed inside the cylindrical hole 801, a touch switch 13 is fixedly installed on the side wall of the fixed block 8 corresponding to the top column 11, there is a gap between the top column 11 and the touch switch 13 when the solar cell module is installed, the heat dissipation hole 101 is cone-shaped, the control motor of the fan blade 14 is connected to the power generation system, and the heat transfer oil is contained in the oil pipe 7. When the heat transfer oil is subjected to high temperature, it will absorb heat and expand. The expanded heat transfer oil will act on the sleeve column 10 through the guide block 6 and the adjustment sleeve 9, so that the sleeve column 10 drives the top column 11 to move. Therefore, when the temperature reaches a certain level, the touch switch 13 will be triggered to rotate the fan blade 14, so that the hot air inside the shell 1 is dispersed through the cylindrical hole 801 and the heat dissipation hole 101 to achieve a cooling effect.

[0029] Please see attached Figure 3-5 , Attachment Figure 7The top of the guide cavity 601 penetrates the inner wall of the guide block 6 and is movably sleeved with a pressure rod 15. The top of the pressure rod 15 is fixedly connected to the tempered glass 4. The bottom of the pressure rod 15 is fixedly connected to the bottom wall of the guide cavity 601 with a first bellows 16. The bottom of the housing 1 is located at the bottom surface of the guide cavity 601 and is provided with an air outlet 102. A one-way valve 17 is fixedly installed between the bottom of the guide cavity 601 and the air outlet 102. The pressure rod 15 is in an I-shape and the diameter of the top end is smaller than the diameter of the bottom end. The pressure rod 15 is subjected to the action of oil pressure so that the pressure rod 15 is subjected to downward force as a whole. Thereby, the force for pressing the tempered glass 4 downward on the top of the solar panel 3 can be greater, so as to ensure the sealing. The middle part of the pressure rod 15 is located exactly between the flow guide cavity 601 and the connecting opening of the oil pipe 7 and the adjustment sleeve 9. The pressure rod 15 and the flow guide cavity 601, the adjustment sleeve 9 and the sleeve column 10 are all sealed by pistons. The change of oil pressure is achieved by the expansion effect of the heat transfer oil, and then the movement or force of the pressure rod 15 is controlled by the oil pressure. In this way, the tightness of the pressing of the tempered glass 4 is achieved, and the sealing effect is better.

[0030] Please see attached Figure 5-7 A hydraulic chamber 103 is provided at the bottom of the housing 1 at the position of the mounting head 5, a top block 18 is movably sleeved on the top of the hydraulic chamber 103, an air outlet 102 with a one-way valve 17 is provided in the middle of the bottom surface of the hydraulic chamber 103, a second bellows 19 is fixedly connected between the bottom surface of the top block 18 and the bottom wall of the hydraulic chamber 103, a hydraulic hole 501 communicating with the hydraulic chamber 103 is provided inside the mounting head 5, a pressure piston 502 is movably sleeved inside the hydraulic hole 501, the mounting heads 5 are symmetrically distributed, and are mounted on the mounting bracket through a pair of mounting heads 5, which is convenient for installation, and can ensure uniform force when pressure is applied, To ensure the stability of the solar cell assembly, the middle section of the sleeve column 10 is conical and its lowest point is higher than the top of the top block 18, so that when the sleeve column 10 moves, it can reach the top of the top block 18, so that the top block 18 presses the hydraulic oil into the hydraulic chamber 103, and then drives the hydraulic pressure inside the hydraulic hole 501 to push the pressure piston 502 to clamp the mounting bracket. The one-way valve 17 installed in the guide chamber 601 and the air outlet 102 at the bottom of the hydraulic chamber 103 can only pass the airflow from top to bottom, thus ensuring the unidirectional movement of the pressure rod 15 and the top block 18, and ensuring that the sealing and clamping force effects can be achieved.

[0031] Working principle: when exposed to sunlight, it will act on the battery cell 301, and the battery cell 301 will convert the sunlight into electrical energy and store it. At the same time, the temperature of the solar cell assembly will rise due to the light. At this time, the high temperature inside the shell 1 will be absorbed by the heat-conducting oil inside the oil pipe 7. The heat-conducting oil will expand by absorbing heat and flow into the guide cavity 601 and increase the oil pressure. The heat-conducting oil passing through the guide cavity 601 will enter the adjustment sleeve 9 and push the sleeve column 10 to move. The movement of the sleeve column 10 will drive the top column 11 to move synchronously and compress the reset spring 12. When the temperature is too high, the large expansion of the heat-conducting oil will cause the sleeve column 10 to directly drive the top column 11 to hit the touch switch 13, thereby starting the motor to rotate the fan blades 14. The fan blades 14 rotate and guide the hot air inside the shell 1 to the outside of the heat dissipation hole 101 through the cylindrical hole 801, so that the temperature inside the shell 1 is reduced and it plays a protective role.

[0032] At the same time, when the heat transfer oil expands, the oil pressure inside the flow guide cavity 601 will increase. At this time, the oil pressure areas on the top and bottom of the pressure rod 15 are different, which will cause the pressure rod 15 to move downward. The downward movement of the pressure rod 15 will press down the air at its bottom and make it pass through the one-way valve 17 and be discharged from the air outlet 102. At this time, the first bellows 16 is compressed, and the pressure rod 15 cannot move upward due to the presence of the one-way valve 17. In this way, when the oil pressure is greater than before, the pressure rod 15 will move downward by a certain gap. The downward movement of the pressure rod 15 makes the silicone between the tempered glass 4 and the battery panel 3 more tightly pressed, ensuring the sealing. At the same time, the pressure rod 15 does not necessarily move downward when the sealing is guaranteed. It only provides downward pressure to ensure that the tempered glass 4 and the battery panel 3 are in closer contact.

[0033] At night or in bad weather, the effect of solar power generation is very poor and it will also be affected by strong wind. At this time, the temperature of the heat transfer oil inside the oil pipe 7 is very low, causing the sleeve column 10 to shrink toward the inside of the adjustment sleeve 9. When the sleeve column 10 moves to the cone and hits the top block 18, it will press the top block 18 downward into the hydraulic chamber 103. At this time, since the bottom of the top block 18 is fixedly connected to the second bellows 19, and is connected to the air outlet 102 and is equipped with a one-way valve 17, the top block 18 moves downward and presses the hydraulic pressure inside the hydraulic chamber 103 into the hydraulic hole 501, thereby driving the pressure piston 502 to clamp the mounting bracket with greater force, thereby ensuring the stability of the installation of the solar cell module.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solar cell assembly that is convenient for welding at low temperature, comprising a housing (1), characterized in that: A battery panel (3) is fixedly mounted inside the shell (1), battery sheets (301) are evenly arranged on the top of the battery panel (3), tempered glass (4) is bonded to the top surface of the battery panel (3), a top cover (2) is fixedly mounted on the top of the shell (1) and in contact with the top surface of the tempered glass (4), a mounting head (5) is fixedly mounted on the bottom of the shell (1), guide blocks (6) are fixedly mounted at the positions of the four corners outside the battery panel (3) inside the shell (1), a guide cavity (601) is provided inside the guide block (6), and oil wells (601) in communication with the guide cavity (601) are symmetrically fixedly mounted on both sides of the battery panel (3) inside the shell (1). The outer shell (1) is provided with a fixed block (8) fixedly mounted in the middle of the upper and lower sides thereof; the guide block (6) is fixedly mounted with an adjustment sleeve (9) connected to the guide cavity (601) on the side close to the fixed block (8); the outer side of the adjustment sleeve (9) is movably sleeved with a sleeve column (10); the sleeve column (10) is fixedly connected with a top column (11) on one end close to the fixed block (8); a return spring (12) is fixedly connected between the outer ring of the top column (11) and the side wall of the fixed block (8); a cylindrical hole (801) is provided inside the fixed block (8); and a heat dissipation hole (101) connected to the cylindrical hole (801) is provided at the bottom of the outer shell (1).

2. A solar cell assembly that is convenient for low temperature welding according to claim 1, characterized in that: A fan blade (14) with a motor is fixedly installed inside the cylindrical hole (801), a touch switch (13) is fixedly installed on the side wall of the fixed block (8) corresponding to the top column (11), a gap exists between the top column (11) and the touch switch (13) when the solar cell assembly is installed, the heat dissipation hole (101) is in a cone shape, and the control motor of the fan blade (14) is connected to a power generation system.

3. A solar cell assembly that is easy to weld at low temperature according to claim 1, characterized in that: The top of the guide cavity (601) passes through the inner wall of the guide block (6) and is movably sleeved with a pressure rod (15); the top of the pressure rod (15) is fixedly connected to the tempered glass (4); a first bellows (16) is fixedly connected between the bottom of the pressure rod (15) and the bottom wall of the guide cavity (601); an air outlet (102) is provided at the bottom of the housing (1) at the bottom surface of the guide cavity (601); and a one-way valve (17) is fixedly installed between the bottom of the guide cavity (601) and the air outlet (102).

4. A solar cell assembly that is convenient for low temperature welding according to claim 3, characterized in that: The pressure rod (15) is in an I-shape and the diameter of the top end is smaller than the diameter of the bottom end. The middle of the pressure rod (15) is located exactly between the flow guide cavity (601) and the connecting openings of the oil pipe (7) and the adjustment sleeve (9). The pressure rod (15) and the flow guide cavity (601), the adjustment sleeve (9) and the sleeve column (10) are sealed by pistons.

5. A solar cell assembly that is convenient for low temperature welding according to claim 1, characterized in that: A hydraulic chamber (103) is provided at the bottom of the housing (1) at the position of the mounting head (5); a top block (18) is movably sleeved on the top of the hydraulic chamber (103); an air outlet (102) with a one-way valve (17) is provided in the middle of the bottom surface of the hydraulic chamber (103); and a second bellows (19) is fixedly connected between the bottom surface of the top block (18) and the bottom wall of the hydraulic chamber (103).

6. A solar cell assembly that is convenient for low temperature welding according to claim 5, characterized in that: The interior of the mounting head (5) is provided with a hydraulic hole (501) communicating with the hydraulic chamber (103), a pressure piston (502) is movably sleeved inside the hydraulic hole (501), and the mounting head (5) is symmetrically distributed.

7. A solar cell assembly that is convenient for low temperature welding according to claim 5, characterized in that: The middle section of the sleeve column (10) is conical and the lowest point is higher than the top of the top block (18).

8. A solar cell assembly that is convenient for low temperature welding according to claim 5, characterized in that: The one-way valves (17) installed in the air outlet holes (102) at the bottom of the flow guide chamber (601) and the hydraulic chamber (103) can only allow airflow from top to bottom.

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