Multi-junction laminated gallium arsenide solar cell

Abstract

The utility model discloses a multi-junction laminated gallium arsenide solar cell which is characterized in that a plurality of gallium arsenide cells are arranged on the upper surface of a radiator side by side at intervals, and the upper surface of the radiator is convexly arranged in an opening formed in the bottom end of a light gathering cover; wind scoopers are arranged at the left end and the right end of the radiator, a plurality of radiating fins are arranged on the side, away from the gallium arsenide battery, of the radiator, and the radiating fins are located in an air flow channel formed between connecting ports formed by the two wind scoopers; a cooling fan is arranged in a wind scooper; according to the scheme, the cooling fins arranged in the radiator are in contact with flowing cold air, so that the battery is cooled; the starting of the cooling fan can be controlled through the trigger device in a high-temperature environment, and the flow of air flowing through the cooling fins is increased; in addition, after heat dissipation is completed, the heat dissipation fan can be automatically controlled to stop, electric energy loss caused by operation of the heat dissipation fan is avoided, and the effective utilization rate of electric energy of the heat dissipation fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, in particular to a multi-junction stacked gallium arsenide solar cell. Background Art

[0002] Gallium arsenide batteries can absorb solar energy and convert it into electrical energy, and are currently the most advanced solar energy utilization technology.

[0003] When multi-junction stacked GaAs solar cells are used, they need to be sealed and fixed inside a focusing cover or protective cover to seal them and ensure that they are isolated from the external environment. Then, the light is gathered through a focusing lens and irradiated on the light-receiving surface of the solar cell, thereby improving the efficiency of power conversion. However, in a strong light and high temperature environment, the light-receiving surface of the multi-junction stacked GaAs solar cell heats up quickly due to the gathered light. Once the temperature exceeds 180°C, the cell will be damaged. At the same time, because the cell is fixed inside the sealing cover, the heat dissipation effect is poor, and the long-term stable operation of the multi-junction stacked GaAs solar cell in a strong light and high temperature environment cannot be guaranteed.

[0004] The utility model patent with application number CN202221316677.2 discloses a gallium arsenide battery pack lens sealing box, including a sealed box body, which is provided with a lens end and a battery end. The utility model patent is also connected to a heat sink fin on the lower surface of the battery substrate, and the heat sink fin is used to dissipate heat from the gallium arsenide battery to ensure the stable operation of the gallium arsenide battery in a high temperature environment. However, in summer or in some areas with higher temperatures, the battery cannot be effectively cooled only by the heat sink fin. Although a heat sink fan is currently provided to cool the heat sink fin, the heat sink fan cannot be automatically started and stopped according to the temperature environment, resulting in a large part of the converted electrical energy being used for fan driving, reducing the efficiency of electrical energy conversion.

[0005] Based on the above-mentioned deficiencies in the prior art, the present application designs a device that can automatically control the start and stop of the cooling fan according to the temperature environment, so as to improve the heat dissipation effect of the multi-junction stacked gallium arsenide battery and ensure that it can operate stably in a high temperature environment. Summary of the invention

[0006] The utility model aims to provide a multi-junction stacked gallium arsenide solar cell, so as to improve the power generation efficiency of a gallium arsenide battery power generation device and the heat dissipation performance.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A multi-junction stacked gallium arsenide solar cell comprises a gallium arsenide cell, a heat sink and a condenser, wherein a plurality of the gallium arsenide cells are arranged side by side and spaced on the upper surface of the heat sink, and the upper surface of the heat sink is convexly arranged in an opening opened at the bottom end of the condenser; the top end surface of the condenser is an open surface, and the open surface is covered with a sealing cover plate; the sealing cover plate is provided with a plurality of windows for fixing condenser lenses, and the condenser lenses are arranged one by one correspondingly with the gallium arsenide cells;

[0009] The left and right ends of the radiator are provided with air guide covers, and a plurality of cooling fins are provided on the side of the radiator away from the gallium arsenide battery, and the cooling fins are located in the air flow channel formed between the connecting ports provided with the two air guide covers; a cooling fan for blowing cooling air into the cooling fins is provided in the air guide cover, and a trigger device for controlling the start and stop of the cooling fan is provided on the focusing cover.

[0010] Furthermore, the trigger device includes a temperature sensor inserted into the condenser, and the temperature sensor is used to detect the temperature inside the condenser; the temperature sensor is electrically connected to a main control device arranged on the air guide cover, and the main control device is electrically connected to a cooling fan.

[0011] Furthermore, the trigger device includes a piston cylinder inserted into the condenser, a mounting cavity is formed in the piston cylinder, and the mounting cavity is communicated with the light-guiding cavity built into the condenser; a sealing piston is movably arranged in the mounting cavity.

[0012] Furthermore, a first conductive contact is provided on the side of the sealing piston away from the light-guiding cavity, and a second conductive contact is provided on the side of the installation cavity away from the light-guiding cavity, and the first conductive contact and the second conductive contact are both electrically connected to the control circuit of the cooling fan; an elastic component is provided in the installation cavity, and the elastic component is used to elastically support the sealing piston along the direction approaching the light-guiding cavity.

[0013] Furthermore, the condenser is in the shape of an inverted pyramid that is wide at the top and narrow at the bottom; a positioning protection ring for restraining the gallium arsenide battery is connected to the opening arranged at the bottom end of the condenser through ribs.

[0014] Furthermore, a carrier plate is protruding from the upper surface of the heat sink, and the carrier plate is inserted into an opening provided at the bottom end of the condenser; and a mounting groove for placing the gallium arsenide battery is opened on the carrier plate.

[0015] Furthermore, the air guide cover is trumpet-shaped, and one end of the air guide cover is provided with a connection port for connecting to two ends of the radiator; two cooling fans are provided, and the two cooling fans are arranged on both sides of the other end of the air guide cover.

[0016] Furthermore, the gallium arsenide cell is a multi-junction stacked gallium arsenide cell.

[0017] By adopting the above technical solution, compared with the prior art, this solution has the following beneficial effects:

[0018] The gallium arsenide battery provided in this solution can be in contact with the cold air flowing through the heat sink through the heat sink fins arranged inside the radiator when performing photovoltaic power generation under normal temperature environment, thereby achieving battery cooling. In some high temperature environments, the cooling fan can be started by controlling the trigger device, so that the cooling fan can increase the air flow through the cooling fins, thereby ensuring that the battery can operate stably under high temperature environment. Moreover, when the battery heats up, the cooling fan can be automatically controlled to stop, avoiding power loss caused by the operation of the cooling fan, thereby improving its effective power utilization rate.

[0019] This solution can place the gallium arsenide battery in a sealed cavity by setting up a condenser and a heat sink to prevent it from being affected by the external environment. In addition, the positioning protection ring set in the condenser can provide better protection for the gallium arsenide battery, avoiding damage to the battery when the condenser is damaged or deformed, thereby improving the protection effect when dealing with external destructive effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of a gallium arsenide solar cell according to a first embodiment of the present utility model.

[0022] Figure 2 It is a partial cross-sectional view of a gallium arsenide solar cell according to the first embodiment of the present invention.

[0023] Figure 3 This is a cross-sectional view of a radiator according to a first embodiment of the present invention.

[0024] Figure 4 This is a schematic structural diagram of a condenser according to a first embodiment of the utility model.

[0025] Figure 5 It is a schematic diagram of the overall structure of a gallium arsenide solar cell according to an embodiment of the utility model.

[0026] Figure 6 This is a cross-sectional view of the piston cylinder of the second embodiment of the utility model.

[0027] List of figure marks: 1-light collecting cover, 101-rib, 102-positioning protection ring, 2-heat sink, 201-carrier plate, 203-mounting groove, 204-heat sink fin, 205-wind guide cover, 206-mounting plate, 3-gallium arsenide battery, 4-sealing cover plate, 5-light collecting lens, 6-temperature sensor, 7-main control device, 8-cooling fan, 901-piston cylinder, 902-sealing piston, 903-first conductive contact piece, 904-second conductive contact piece, 905-mounting cavity, 906-elastic component. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figures 1 to 6 As shown in FIG. 1 , the present solution provides a multi-junction stacked gallium arsenide solar cell, which includes a gallium arsenide cell 3, a heat sink 2 and a concentrator 1. The gallium arsenide cell 3 is a multi-junction stacked gallium arsenide cell.

[0030] Embodiment 1:

[0031] See also Figure 1-4 As shown, the utility model provides a first embodiment of a gallium arsenide solar cell, which mainly includes a gallium arsenide cell 3, a heat sink 2 and a concentrator 1; a plurality of gallium arsenide cells 3 are arranged side by side and spaced apart on the upper surface of the heat sink 2, and the upper surface of the heat sink 2 is protruded into an opening opened at the bottom end of the concentrator 1.

[0032] Specifically, Figure 2 As shown, a carrier plate 201 is protruding from the upper surface of the heat sink 2, and the carrier plate 201 is inserted into the opening set at the bottom end of the condenser 1; a mounting groove 203 for placing the gallium arsenide battery 3 is opened on the carrier plate 201; wherein the heat sink 2 is made of a material with higher thermal conductivity than other materials, such as aluminum, aluminum alloy, copper or copper alloy. The heat sink 2 is formed by extrusion, stretching or other processes.

[0033] The gallium arsenide battery 3 is arranged in the installation groove 203, and the gap between the gallium arsenide battery 3 and the inner wall of the installation groove 203 is filled with thermal conductive silicone grease; by filling the thermal conductive silicone grease, there is no gap between the gallium arsenide battery 3 and the carrier board 201; through the setting of the thermal conductive silicone grease, the gallium arsenide battery 3 is heat-conducted and dissipated, thereby ensuring the stability of the electrical performance of the gallium arsenide battery 3.

[0034] In addition, the heat dissipation surface of the gallium arsenide battery 3 is connected to the radiator 2 in the mounting groove 203, which is conducive to uniform heat conduction to the entire radiator 2 and fully exerting the overall heat dissipation efficiency of the radiator 2; the gallium arsenide battery 3 is arranged in the mounting groove 203 of the radiator 2, making the structure compact and convenient for installation and storage.

[0035] In this embodiment, the specific structure of the above-mentioned focusing cover 1 is as follows: the focusing cover 1 is in the shape of an inverted pyramid that is wide at the top and narrow at the bottom, and the upper and lower ends of the focusing cover 1 are both open surfaces; wherein, the focusing cover 1 has an opening at its bottom end connected to a positioning protection ring 102 for restraining the gallium arsenide battery 3 through a rib 101.

[0036] In addition, if Figure 3 As shown, a carrier plate 201 is protruding from the upper surface of the heat sink 2, and the carrier plate 201 is inserted into the opening set at the bottom end of the condenser 1; a mounting groove 203 for placing the gallium arsenide battery 3 is opened on the carrier plate 201, and the mounting groove 203 and the positioning protection ring 102 are set one by one up and down.

[0037] At the same time, a plurality of gallium arsenide batteries 3 are fixed in the mounting groove 203, and the light-receiving surface of the top of the gallium arsenide battery 3 is convexly arranged in the positioning protection ring 102; the positioning protection ring 102 of the above design can not only play a positioning role for the gallium arsenide battery 3, but also can strengthen the role through the ribs 101 and the positioning protection ring 102 when the focusing cover 1 is damaged and deformed by external force, thereby providing a sufficiently good protection effect for the gallium arsenide battery 3.

[0038] Please continue reading Figure 2 The top end surface of the condenser 1 is covered with a sealing cover plate 4, and a plurality of windows for fixing the condenser lens 5 are provided on the sealing cover plate 4, and the condenser lens 5 is arranged one by one with the gallium arsenide battery 3. Among them, the condenser lens 5 can be a Fresnel lens.

[0039] With the above-mentioned mechanism, the positioning protection ring 102 can constrain the gallium arsenide battery 3 in the installation groove 203, and enable the focusing lens 5 and the gallium arsenide battery 3 to be coaxially arranged, thereby ensuring the normal operation of the gallium arsenide solar cell and improving the focusing effect and accuracy of sunlight. Due to the setting of the positioning protection ring 102, when used in sunlight, the central optical axis is difficult to deviate, thereby ensuring that the concentrated light spot falls on the gallium arsenide battery 3, so that the sunlight can be focused exactly on the center of the light receiving surface of the solar cell, and the photoelectric conversion efficiency is the highest.

[0040] See also Figure 2-3, a carrier plate 201 is convexly provided on the upper surface of the radiator 2, and the carrier plate 201 is inserted into the opening provided at the bottom end of the condenser 1; a mounting groove 203 for placing the gallium arsenide battery 3 is provided on the carrier plate 201; at the same time, air guide covers 205 are provided at both ends of the radiator 2, and a plurality of heat dissipation fins 204 are provided on the side of the radiator 2 away from the gallium arsenide battery 3, and the heat dissipation fins 204 are located in the air flow channel formed between the connection ports provided with the two air guide covers 205;

[0041] Specifically, Figure 3 As shown, a plurality of heat dissipation fins 204 are provided on the side of the radiator 2 away from the gallium arsenide battery 3, and a mounting plate 206 is connected to the side of the heat dissipation fins 204 away from the gallium arsenide battery 3, and the radiator 2 and the mounting plate 206 are integrally formed; wherein, a plurality of connection holes are evenly arranged on the mounting plate 206, and the gallium arsenide solar cell is fixedly connected to the mounting surface by fasteners.

[0042] Please continue reading Figure 2-3 A plurality of heat dissipation fins 204 are arranged on the lower surface of the radiator 2, and the heat dissipation fins 204 are arranged along the length direction of the radiator 2; at the same time, the radiator 2, the heat dissipation fins 204 and the mounting plate 206 together form an air flow channel that is arranged to pass through from left to right.

[0043] In addition, the air guide cover 205 is trumpet-shaped; one end of the air guide cover 205 is provided with a connection port for connecting to the two ends of the radiator 2, and the connection port is arranged corresponding to the air flow channel, so that the cooling air can flow into the air flow channel through the air guide cover 205; thereby achieving cooling of the radiator 2, and then achieving heat dissipation and cooling of the gallium arsenide battery 3.

[0044] Correspondingly, a heat dissipation fan 8 for blowing cooling air into the heat dissipation fins 204 is provided in one of the air guide covers 205 . Two heat dissipation fans 8 are provided, and the two heat dissipation fans 8 are both arranged on both sides of the other end of the air guide cover 205 .

[0045] It should be noted that the two cooling fans 8 are arranged side by side in the same air guide cover 205, and the two cooling fans 8 blow the cooling air into the air flow channel at the same time; at the same time, the two cooling fans 8 can also be respectively arranged in two air guide covers 205, one of the cooling fans 8 is used to circulate the cooling air into the air flow channel through the air guide cover 205, and the other cooling fan 8 is used to discharge the air in the air flow channel to the outside of the radiator 2 through the air guide cover 205.

[0046] Through this construction, the airflow supplied from the heat dissipation fan 8 can easily enter the space between adjacent heat dissipation fins 204; in addition, the contact area between the heat dissipation fins 204 and the airflow supplied from the heat dissipation fan 8 (i.e., the heat transfer area for releasing the heat transferred from the gallium arsenide battery 3 to the air) is increased, so that the airflow can more easily remove heat from the heat dissipation fins 204.

[0047] like Figure 1 As shown, a trigger device for controlling the start and stop of the cooling fan 8 is provided on the condenser 1.

[0048] Specifically, the trigger device includes a temperature sensor 6 inserted into the condenser 1, and the temperature sensor 6 is used to detect the temperature inside the condenser 1; the temperature sensor 6 is electrically connected to the main control device 7 set on the wind guide cover 205, and the main control device 7 is electrically connected to the cooling fan 8.

[0049] Accordingly, in order to achieve effective heat dissipation of the gallium arsenide battery 3 under strong light and high temperature environment, in the present embodiment, the temperature sensor 6 is inserted into the condenser 1, and the detection end of the temperature sensor 6 extends into the light-guiding cavity provided in the condenser 1, and the temperature sensor 6 is used to detect the temperature in the light-guiding cavity; at the same time, a main control device 7 is provided on the air guide 205, the radiator 2 or the condenser 1, and the temperature sensor 6 is electrically connected to the main control device 7.

[0050] In addition, multiple temperature sensors 6 can be evenly arranged on the radiator 2. By using matrix temperature monitoring, the temperature of each position of the gallium arsenide battery 3 can be more accurately reflected, so that the main control device 7 can more accurately control the start and stop of the cooling fan 8, thereby achieving a better heat dissipation effect on the gallium arsenide battery 3.

[0051] In this embodiment, when the gallium arsenide battery 3 is operating in a high temperature environment, the internal temperature of the condenser 1 is higher than a preset value, which means that the surface temperature of the gallium arsenide battery 3 is about to reach the tolerance limit. At this time, the main control device 7 will issue a control instruction to make the two cooling fans 8 run synchronously, thereby increasing the air flow speed flowing through the radiator 2, so that the gallium arsenide battery 3 on the radiator 2 can be effectively cooled; however, when the internal temperature of the condenser 1 is lower than a certain temperature, it means that the cooling of the gallium arsenide battery 3 is completed, and the cooling fan 8 can be turned off at this time.

[0052] Embodiment 2:

[0053] See also Figure 5-6As shown, the utility model provides a second embodiment of a gallium arsenide solar cell, which mainly includes a gallium arsenide cell 3, a heat sink 2 and a condenser 1; a plurality of gallium arsenide cells 3 are arranged side by side and spaced apart on the upper surface of the heat sink 2, and the upper surface of the heat sink 2 is convexly arranged in an opening opened at the bottom end of the condenser 1; the second embodiment is substantially the same as the first embodiment, and the difference between the second embodiment and the first embodiment is that the specific structure of the trigger device is different.

[0054] See also Figure 5-6 The trigger device includes a piston cylinder 901 inserted into the condenser 1, and a mounting cavity 905 is formed in the piston cylinder 901, and the mounting cavity 905 is communicated with the light-guiding cavity built into the condenser 1; through the setting of the piston cylinder 901, it is convenient to control the start and stop of the cooling fan 8.

[0055] A piston cylinder 901 penetrating inside and outside is arranged on the side wall of the condenser 1 , and the piston cylinder 901 is best arranged at a position directly above the cooling fan 8 .

[0056] Specifically, Figure 6 As shown, a sealing piston 902 is movably arranged in the installation cavity 905, and the sealing piston 902 is interference fit with the inner wall of the installation cavity 905; a first conductive contact piece 903 is arranged on the side of the sealing piston 902 away from the light guide cavity, and a second conductive contact piece 904 is arranged on the side of the installation cavity 905 away from the light guide cavity, and the first conductive contact piece 903 and the second conductive contact piece 904 are both electrically connected to the control circuit of the cooling fan 8; an elastic component 906 is arranged in the installation cavity 905, and the elastic component 906 is used to elastically support the sealing piston 902 along the direction close to the light guide cavity.

[0057] The elastic component 906 is a spring, and the elastic component 906 is a tension spring.

[0058] In this embodiment, the installation cavity 905 is communicated with the light-guiding cavity built into the condenser 1, so that the gas inside the condenser 1 can enter the installation cavity 905; the sealing piston 902 is movably arranged in the installation cavity 905, the first conductive contact piece 903 and the second conductive contact piece 904 are arranged on the side of the sealing piston 902 away from the light-guiding cavity, the first conductive contact piece 903 is connected to the sealing piston 902, and the second conductive contact piece 904 is connected to the side wall of the installation cavity 905; at the same time, a spring is arranged in the installation cavity 905, one end of the spring is connected to the sealing piston 902, and the other end of the spring is connected to the inner wall of the installation cavity 905;

[0059] It can be seen that by adopting the above-mentioned structural setting, the contact switch composed of the first conductive contact piece 903 and the second conductive contact piece 904 is connected in series to the control circuit of the cooling fan 8, and the first conductive contact piece 903 and the second conductive contact piece 904 are contacted or disconnected by the left and right displacement of the sealing piston 902, thereby controlling the start and stop of the cooling fan 8.

[0060] Please continue reading Figure 6 The mounting cavity 905 is communicated with the light-guiding cavity built into the condenser 1, and the mounting cavity 905 on the side of the sealing piston 902 away from the light-guiding cavity is communicated with the external air; through the principle of thermal expansion and contraction of gas, the air in the light-guiding cavity can push the sealing piston 902 to move to the right.

[0061] It should also be noted that, in this embodiment, sealing rings are provided at the connection between the open surface at the top of the condenser 1 and the sealing cover plate 4 and at the connection between the opening at the top of the condenser 1 and the heat sink 2, so as to improve the airtightness inside the entire condenser 1.

[0062] In the present embodiment, when the gallium arsenide battery 3 operates in a high temperature environment, the surface temperature of the gallium arsenide battery 3 is relatively high. At this time, the temperature of the gas in the light-guiding cavity is also relatively high. Due to the principle of thermal expansion and contraction of the gas, a relatively large pressure difference will occur between the inner and outer sides of the piston cylinder 901, so that the sealing piston 902 overcomes the action of the spring and pushes outward; thereby, the first conductive contact piece 903 contacts the second conductive contact piece 904, and the control circuit of the cooling fan 8 is turned on; after the connection, the two cooling fans 8 operate synchronously, thereby increasing the air flow velocity flowing through the inside of the radiator 2, so that the gallium arsenide battery 3 on the radiator 2 can be effectively cooled.

[0063] However, when the temperature of the gas in the light-guiding cavity drops to a certain level, the first conductive contact piece 903 is separated from the second conductive contact piece 904 by the action of the spring, thereby disconnecting the control circuit of the heat dissipation fan 8 and stopping the operation of the fan.

[0064] 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 the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-junction stacked gallium arsenide solar cell, comprising a gallium arsenide cell (3), a heat sink (2) and a concentrator (1), characterized in that: A plurality of the gallium arsenide cells (3) are arranged side by side and at intervals on the upper surface of the heat sink (2), and the upper surface of the heat sink (2) is convexly arranged in an opening opened at the bottom end of the condenser (1); the top end surface of the condenser (1) is an open surface, and the open surface is covered with a sealing cover plate (4); the sealing cover plate (4) is provided with a plurality of windows for fixing condenser lenses (5), and the condenser lenses (5) and the gallium arsenide cells (3) are arranged one by one; The left and right ends of the radiator (2) are both provided with air guide covers (205); a plurality of heat dissipation fins (204) are provided on the side of the radiator (2) away from the gallium arsenide battery (3); and the heat dissipation fins (204) are located in an air flow channel formed between connection ports provided on two air guide covers (205); a heat dissipation fan (8) for blowing cooling air into the heat dissipation fins (204) is provided in the air guide cover (205); and a trigger device for controlling the start and stop of the heat dissipation fan (8) is provided on the focusing cover (1).

2. The multi-junction stacked gallium arsenide solar cell according to claim 1, characterized in that: The trigger device comprises a temperature sensor (6) inserted into the condenser (1), and the temperature sensor (6) is used to detect the temperature inside the condenser (1); the temperature sensor (6) is electrically connected to a main control device (7) provided on the wind guide cover (205), and the main control device (7) is electrically connected to a cooling fan (8).

3. The multi-junction stacked gallium arsenide solar cell according to claim 1, characterized in that: The focusing cover (1) is in the shape of an inverted pyramid that is wide at the top and narrow at the bottom; a positioning protection ring (102) for restraining the gallium arsenide battery (3) is connected to the opening arranged at the bottom end of the focusing cover (1) through ribs (101).

4. The multi-junction stacked gallium arsenide solar cell according to claim 1, characterized in that: A carrier plate (201) is protrudingly provided on the upper surface of the heat sink (2), and the carrier plate (201) is inserted into an opening provided at the bottom end of the condenser (1); a mounting groove (203) for placing a gallium arsenide battery (3) is provided on the carrier plate (201).

5. The multi-junction stacked gallium arsenide solar cell according to claim 1, characterized in that: The air guide cover (205) is trumpet-shaped, and one end of the air guide cover (205) is provided with a connection port for connecting to two ends of the radiator (2); two cooling fans (8) are provided, and the two cooling fans (8) are both arranged on both sides of the other end of the air guide cover (205).

6. A multi-junction stacked gallium arsenide solar cell according to any one of claims 1 to 5, characterized in that: The gallium arsenide cell (3) is a multi-junction stacked gallium arsenide cell.

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