A solar heating, expansion and compression air energy storage and power generation system

Abstract

The present application belongs to the field of energy storage and power generation, and specifically discloses a solar heating and expansion compressed air energy storage and power generation system, which includes a cold air supply device, a solar heating and pressurizing device, a compressed air energy storage device and a power generation device; the solar heating and pressurizing device includes a solar heat collecting tank and a pressurizing tank, the solar heat collecting tank is connected to the air outlet of the cold air supply device to receive cold air and heat it through solar energy, the solar heat collecting tank is connected to the pressurizing tank to pressurize the gas in the pressurizing tank; the compressed air energy storage device is connected to the air outlet of the pressurizing tank to receive high-pressure gas; the power generation device is connected to the output end of the compressed air energy storage device to generate electricity. Through the present application, the solar heating and pressurizing device is used to heat the cold air, provide a high-pressure gas source for the compressed air energy storage tank, the compressed air energy storage device receives the high-pressure gas for energy storage and uses it for the power generation device to generate electricity, and there is no energy loss in the process, the power generation efficiency is high and it is more environmentally friendly.

Description

Technical Field

[0001] The present application belongs to the field of energy storage and power generation, and more specifically, to a solar energy heating, expansion and compression air energy storage and power generation system. Background Art

[0002] Solar energy has attracted much attention as a clean and renewable energy source. However, there are problems such as instability and intermittency in the use of solar energy, so large-scale energy storage technology is needed to support it. How to efficiently store and utilize solar energy has become one of the hot issues in current research.

[0003] In the related technologies, there are many types of energy storage technologies. Considering various factors such as comprehensive cost, system efficiency, storage cycle, and life span, compressed air energy storage is an extremely suitable large-scale energy storage technology. The working process of the traditional compressed air energy storage system is as follows: the compressed air passing through the compressor needs to be cooled to a lower temperature to reduce the power consumption of the compressor before entering the next-stage compressor or being stored in the compressed air storage depot. The cooling of compressed air causes a large amount of heat loss, making the system inefficient. In addition to the problem of low efficiency, in order to improve the efficiency of the energy release process, fuel is needed to assist combustion, and the greenhouse gases produced by combustion are released into the atmosphere, causing certain pollution. Summary of the invention

[0004] In view of the defects of the prior art, the present application provides a solar heating and expansion compressed air energy storage power generation system, which aims to solve the problems of low efficiency and easy pollution of the existing compressed air energy storage system.

[0005] The present application provides a solar heating, expansion, compressed air energy storage and power generation system, which specifically includes a cold air supply device, a solar heating and pressurizing device, a compressed air energy storage device and a power generation device; the solar heating and pressurizing device includes a solar heat collecting tank and a pressurizing tank, the solar heat collecting tank is connected to the air outlet of the cold air supply device to receive cold air and heat it through solar energy, the solar heat collecting tank is connected to the pressurizing tank to pressurize the gas in the pressurizing tank; the compressed air energy storage device is connected to the air outlet of the pressurizing tank to receive high-pressure gas; the power generation device is connected to the output end of the compressed air energy storage device to generate electricity.

[0006] The above technical scheme conceived by the present application is compared with the prior art, because the present application adopts a cold air supply device to inject cold air into the solar thermal collector tank, and heats the cold air through solar energy, so that the unit mass of cold air in the closed container is heated, the pressure increases sharply, causing the air in the container to expand rapidly and produce a large pressure, thereby pressurizing the gas in the booster tank, providing a high-pressure gas source for the compressed air energy storage tank, using a compressed air energy storage device to receive the high-pressure gas for energy storage, and using the stored capacity for power generation in a power generation device to generate electricity, there is no energy loss in the process, and the beneficial effects of high power generation efficiency and greater environmental protection can be achieved.

[0007] As a further preference, the solar thermal collector tank is a transparent tank body, the solar heating and boosting device also includes a plurality of convex lenses, and the plurality of convex lenses are evenly arranged on the solar thermal collector tank; a first exhaust valve for discharging hot air is also provided on the top of the solar thermal collector tank.

[0008] By adopting the above technical solution, sunlight is irradiated into the solar thermal collector tank through a convex lens, and heat is collected by focusing the convex lens, which can efficiently heat the cold air in the solar thermal collector tank, realize gas expansion, and increase pressure.

[0009] As a further preferred embodiment, the solar heating booster device also includes a booster piston, which is arranged in the booster tank and fits tightly against the inner wall. The booster tank is connected to the solar thermal collector tank, and the booster piston moves to one side to inject high-pressure gas into the compressed air energy storage device.

[0010] By adopting the above technical solution, the gas in the solar thermal collector tank expands and pushes the booster piston to move. The booster piston can compress the air in the booster tank, pressurize the air and inject the high-pressure air into the compressed air energy storage device for storage.

[0011] As a further preference, the solar heating boosting device also includes a spring and an atmospheric air intake valve, the spring being fixedly connected between the boosting piston and the inner wall of the boosting tank to reset the boosting piston, and the atmospheric air intake valve being fixedly connected to the boosting tank to balance the air pressure on both sides of the boosting piston.

[0012] By adopting the above technical solution, air can enter the interior of the booster tank through the atmospheric intake valve to achieve air pressure balance on both sides of the booster piston. The booster piston can be reset by a spring to facilitate the injection of high-pressure gas into the compressed air energy storage device again.

[0013] As further preferred, the compressed air energy storage device includes a high-pressure energy storage tank and a high-pressure air intake valve, the high-pressure air intake valve is fixedly mounted on the high-pressure energy storage tank, and the high-pressure air intake valve is connected to the boost tank via a high-pressure air supply pipe.

[0014] By adopting the above technical solution, when the high-pressure intake valve is opened, the high-pressure air in the boost tank can enter the high-pressure energy storage tank for storage through the high-pressure air supply pipe and the high-pressure intake valve, and after the high-pressure gas is stored, the high-pressure intake valve is closed, which can prevent the high-pressure gas from escaping and improve the storage effect.

[0015] As further preferred, the power generation device includes a cylinder body, a high-pressure air nozzle, a flywheel, a generator and a driving mechanism, the generator is fixedly mounted on the cylinder body, the flywheel is arranged on the rotating shaft of the generator, the high-pressure air nozzle is fixedly connected to the cylinder body and connected to the high-pressure energy storage tank through a power generation air supply pipe, and the high-pressure gas in the high-pressure energy storage tank is ejected through the high-pressure air nozzle so that the driving mechanism drives the flywheel to rotate.

[0016] By adopting the above technical solution, the high-pressure gas in the high-pressure energy storage tank is sprayed into the cylinder body through the power generation gas supply pipe and the high-pressure jet nozzle, and the drive mechanism drives the flywheel to rotate so that the generator can generate electricity.

[0017] As a further preference, the driving mechanism includes a power piston and a connecting rod, the power piston is arranged in the cylinder body and fits tightly against the inner wall, one end of the connecting rod is rotationally connected to the power piston, and the other end is rotationally connected to the flywheel, and the power piston moves to drive the flywheel to rotate through the connecting rod.

[0018] By adopting the above technical solution, the power piston moves under the high-pressure jet of the high-pressure jet nozzle, and the power piston drives the flywheel to rotate through the connecting rod. The rotation of the flywheel can push the power piston back so that the power piston moves again to rotate the flywheel, thereby achieving continuous and stable power generation with a simple structure and high efficiency.

[0019] As a further preferred embodiment, the cold air supply device includes a cold air pipe, a cold air supply valve and a cold water pool, one end of the cold air pipe is connected to a cold air source, and the other end extends to the interior of the solar thermal collector tank and is connected to the cold air supply valve, and the two ends of the cold air pipe are immersed below the liquid level of the cold water pool.

[0020] By adopting the above technical solution, the cold air supply valve is opened, and the cold air enters the interior of the solar thermal collector tank through the cold air pipe, and the cold air is injected from the bottom to the top. The hot air inside the solar thermal collector tank can be discharged from the first exhaust valve on the top, which can make the cold air fill the interior of the solar thermal collector tank more quickly. After the cold air in the cold air pipe passes through the cold water pool, its temperature can be stabilized, avoiding the cold air from heating up during the transmission process, which affects the effect of heating and pressurizing after it enters the solar thermal collector tank.

[0021] As a further preference, the compressed air energy storage device and the power generation device are provided in plurality, and each of the compressed air energy storage device is connected to one or more power generation devices.

[0022] By adopting the above technical solution, the high-pressure gas generated in the boost tank can be stored through multiple compressed air energy storage devices, so that it can be used to generate electricity for one or more power generation devices, thereby improving the efficiency of power generation.

[0023] As further preferred, the atmospheric air intake valve is a one-way valve or a solenoid valve, and the direction of the one-way valve is from the outside of the boost tank to the inside thereof.

[0024] By adopting the above technical solution, the atmospheric intake valve adopts a one-way valve or a solenoid valve as needed. When the booster piston moves to one side, high-pressure gas can be injected into the compressed air energy storage device. When the booster piston is reset, the atmospheric intake valve is automatically opened to allow air to enter, balancing the air pressure on both sides of the booster piston, thereby facilitating the reset of the booster piston.

[0025] In general, the above technical solutions conceived by this application have the following technical advantages compared with the prior art:

[0026] 1. The present application adopts a cold air supply device to inject cold air into the solar thermal collector tank, and heats the cold air through solar energy, so that the unit mass of cold air in the closed container is heated, and the pressure increases sharply, causing the air in the container to expand rapidly and generate a large pressure, thereby pressurizing the gas in the booster tank, providing a high-pressure gas source for the compressed air energy storage tank, and using a compressed air energy storage device to receive the high-pressure gas for energy storage, and the stored capacity is used for power generation in a power generation device to generate electricity. There is no energy loss in the process, the power generation efficiency is high, and it is more environmentally friendly.

[0027] 2. In the present application, sunlight is irradiated into a solar thermal tank through a convex lens, and heat is collected by focusing the convex lens, which can efficiently heat the cold air in the solar thermal tank, causing gas expansion and pressure increase, thereby driving the booster piston to move. The booster piston can compress the air in the booster tank, pressurize the air and inject the high-pressure air into a compressed air energy storage device for storage, which is then used for power generation by the power generation device.

[0028] 3. The present application provides multiple compressed air energy storage devices and power generation devices so that the high-pressure gas generated in the booster tank can be stored through multiple compressed air energy storage devices, thereby being able to supply one or more power generation devices with electricity, thereby improving the efficiency of power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the power generation system provided in the embodiment of the present application;

[0030] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0031] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0032] 1. Cold air supply device; 11. Cold air pipe; 12. Cold air supply valve; 13. Cold water pool; 2. Solar heating booster device; 21. Solar thermal collector tank; 211. First exhaust valve; 22. Booster tank; 23. Convex lens; 24. Booster piston; 25. Spring; 26. Atmospheric intake valve; 3. Compressed air energy storage device; 31. High-pressure energy storage tank; 32. High-pressure intake valve; 33. High-pressure air supply pipe; 4. Power generation device; 41. Cylinder body; 411. Second exhaust valve; 42. High-pressure jet nozzle; 43. Flywheel; 44. Generator; 45. Driving mechanism; 451. Power piston; 452. Connecting rod; 46. Power generation air supply pipe. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] Reference Figure 1-2 , a solar heating expansion compressed air energy storage power generation system disclosed in the present application includes a gas supply device, a solar heating and pressurizing device 2, a compressed air energy storage device 3 and a power generation device 4; wherein the solar heating and pressurizing device 2 includes a solar heat collecting tank 21 and a pressurizing tank 22, one end of the pressurizing tank 22 is connected and communicated with the solar heat collecting tank 21, the solar heat collecting tank 21 is located outdoors, and the pressurizing tank 22 is located indoors, the solar heat collecting tank 21 is connected to the air outlet end of the cold air supply device 1 to receive cold air and is heated by solar energy, the cold air heating pressure inside the solar heat collecting tank 21 increases sharply, causing the air in the container to expand rapidly and generate a large pressure, thereby pressurizing the gas in the pressurizing tank 22, providing a high-pressure gas source for the compressed air energy storage tank, and the compressed air energy storage device 3 is connected to the air outlet end of the pressurizing tank 22 to receive high-pressure gas for energy storage; the power generation device 4 is connected to the output end of the compressed air energy storage device 3, and the compressed air energy storage device 3 uses the stored high-pressure gas for the power generation device 4 to generate electricity.

[0035] Specifically, multiple compressed air energy storage devices 3 and power generation devices 4 can be provided according to actual needs. Each compressed air energy storage device 3 is connected to one or more power generation devices 4, so that the high-pressure gas generated in the boost tank 22 can be stored through multiple compressed air energy storage devices 3, thereby being able to supply one or more power generation devices 4 to generate electricity, thereby improving the efficiency of power generation.

[0036] In this embodiment, in order to inject cold air into the solar thermal collector 21, the solar thermal collector 21 is fixedly installed on the open ground and a first exhaust valve 211 for exhausting hot air is fixedly installed on the top. The cold air supply device 1 includes a cold air pipe 11, a cold air supply valve 12 and a cold water pool 13. One end of the cold air pipe 11 is connected to a cold air source, and the cold air source uses cold air at a certain depth underground or cold air in a cave in the mountain. The cold water pool 13 is located underground, and the other end of the cold air pipe 11 extends to the interior of the solar thermal collector 21 and is connected to the cold air supply valve 12. The air pipe 11 is wound between the two ends and immersed below the liquid level of the cold water pool 13. The cold air supply valve 12 is opened, and the cold air is transported into the interior of the solar thermal collector 21 through the cold air pipe 11, and the cold air is injected from the bottom to the top. The hot air inside the solar thermal collector 21 can be discharged from the first exhaust valve 211 at the top, which can make the cold air fill the interior of the solar thermal collector 21 more quickly. After the cold air in the cold air pipe 11 passes through the cold water pool 13, its temperature can be stabilized. After the solar thermal collector 21 is filled with cold air, the first exhaust valve 211 and the cold air supply valve 12 are closed.

[0037] Furthermore, the solar heating and boosting device 2 also includes a plurality of convex lenses 23, which are evenly arranged on the solar thermal collecting tank 21. The solar thermal collecting tank 21 is a transparent tank body. In this embodiment, the convex lenses 23 are arranged on the inner wall of the solar thermal collecting tank 21 to avoid being affected by dust. The sunlight is focused through the convex lenses 23 and then emitted into the interior of the solar thermal collecting tank 21, which can efficiently heat the cold air in the solar thermal collecting tank 21, thereby realizing the expansion of the internal gas in the solar thermal collecting tank 21 and increasing the pressure.

[0038] Furthermore, the solar heating booster device 2 also includes a booster piston 24, a spring 25 and an atmospheric intake valve 26, wherein the booster piston 24 is arranged in the booster tank 22 and the circumference of the booster piston 24 is tightly fitted with the inner wall of the booster tank 22. Since the booster tank 22 is connected to the solar heat collecting tank 21, when the gas in the solar heat collecting tank 21 expands and the pressure increases, the booster piston 24 moves to one side to inject the high-pressure gas into the compressed air energy storage device 3; at the same time, the spring 25 is fixedly connected between the booster piston 24 and the inner wall of the booster tank 22 to reset the booster piston 24, and the atmospheric intake valve 26 is fixedly connected to the booster tank 22 to balance the air pressure on both sides of the booster piston 24. When the first exhaust valve 211 is opened, the gas in the solar heat collecting tank 21 can be discharged. At this time, the air can be discharged through the atmospheric intake valve 2 6 enters the interior of the boosting tank 22 to achieve air pressure balance on both sides of the boosting piston 24. The spring 25 can be used to reset the boosting piston 24, so that the high-pressure gas can be injected into the compressed air energy storage device 3 according to the above process again. A limit block is fixedly connected to the inner wall of the boosting tank 22, and the limit block limits the spring 25 to push the farthest position of the boosting piston 24; the atmospheric intake valve 26 is a one-way valve or a solenoid valve. When it is a one-way valve, the direction of the one-way valve is from the outside of the boosting tank 22 to the inside, so that the high-pressure gas can enter the compressed air energy storage device 3. When the boosting piston 24 is reset, the atmospheric intake valve 26 is opened, and air enters the boosting tank 22 from the atmospheric intake valve 26. At this time, the first exhaust valve 211 and the cold air supply valve 12 are opened, and cold air is injected into the solar collector tank 21 again.

[0039] In order to store the high-pressure air in the boost tank 22, the compressed air energy storage device 3 includes a high-pressure energy storage tank 31 and a high-pressure air intake valve 32. The high-pressure air intake valve 32 is fixedly installed on the high-pressure energy storage tank 31. The high-pressure air intake valve 32 is connected to the boost tank 22 through a high-pressure air supply pipe 33. After the high-pressure air intake valve 32 is opened, the high-pressure air in the boost tank 22 enters the high-pressure energy storage tank 31 through the high-pressure air supply pipe 33 and the high-pressure air intake valve 32. After closing the high-pressure air intake valve 32, the high-pressure gas is stored in the high-pressure energy storage tank 31.

[0040] In this embodiment, the high-pressure air stored in the compressed air energy storage device 3 is used to realize the power generation device 4 to generate electricity. Specifically, the power generation device 4 includes a cylinder body 41, a high-pressure air jet nozzle 42, a flywheel 43, a generator 44 and a driving mechanism 45. The generator 44 is fixedly mounted on the cylinder body 41, the flywheel 43 is fixedly connected to the rotating shaft of the generator 44, the high-pressure air jet nozzle 42 is fixedly connected to the cylinder body 41 and connected to the high-pressure energy storage tank 31 through the power generation air supply pipe 46, and the high-pressure gas in the high-pressure energy storage tank 31 is ejected through the high-pressure air jet nozzle 42 so that the driving mechanism 45 drives the flywheel 43 to rotate, and the flywheel 43 drives the rotating shaft of the generator 44 to rotate to realize power generation; the driving mechanism 45 includes a power piston 45 1 and connecting rod 452, the power piston 451 is arranged in the cylinder body 41 and fits tightly with the inner wall, one end of the connecting rod 452 is rotatably connected to the upper surface of the power piston 451, and the other end is rotatably connected to the flywheel 43, the power piston 451 moves to drive the flywheel 43 to rotate through the connecting rod 452, the high-pressure air nozzle 42 intermittently blows the power piston 451 upward from the bottom of the power piston 451, the power piston 451 can move upward, and can fall naturally under the action of gravity, the second exhaust valve 411 is fixedly installed on the cylinder body 41, the second exhaust valve 411 is closed when the high-pressure air nozzle 42 sprays, and when the power piston 451 is opened, the second exhaust valve 411 is opened to facilitate the falling of the power piston 451.

[0041] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations or constituent elements, and do not limit one or more additional functions, operations and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components or combinations thereof.

[0042] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A solar heating expansion compressed air energy storage power generation system, characterized in that: It comprises a cold air supply device (1), a solar heating and pressurizing device (2), a compressed air energy storage device (3) and a power generation device (4); The solar heating and pressurizing device (2) comprises a solar heat collecting tank (21) and a pressurizing tank (22); the solar heat collecting tank (21) is connected to the air outlet of the cold air supply device (1) to receive cold air and heat it through solar energy; the solar heat collecting tank (21) is connected to the pressurizing tank (22) to pressurize the gas in the pressurizing tank (22); The compressed air energy storage device (3) is connected to the gas outlet end of the boost tank (22) to receive high-pressure gas; The power generation device (4) is connected to the output end of the compressed air energy storage device (3) to generate electricity; The solar heat collecting tank (21) is a transparent tank body, and the solar heating and pressurizing device (2) further comprises a plurality of convex lenses (23), wherein the plurality of convex lenses (23) are evenly arranged on the solar heat collecting tank (21); a first exhaust valve (211) for exhausting hot air is also arranged on the top of the solar heat collecting tank (21); The solar heating booster device (2) further comprises a booster piston (24), the booster piston (24) being arranged in the booster tank (22) and closely fitting with the inner wall, the booster tank (22) being connected with the solar heat collecting tank (21), and the booster piston (24) moving to one side to inject high-pressure gas into the compressed air energy storage device (3); The solar heating booster device (2) further comprises a spring (25) and an atmospheric air intake valve (26), wherein the spring (25) is fixedly connected between the booster piston (24) and the inner wall of the booster tank (22) to reset the booster piston (24), and the atmospheric air intake valve (26) is fixedly connected to the booster tank (22) to balance the air pressure on both sides of the booster piston (24); The cold air supply device (1) comprises a cold air pipe (11), a cold air supply valve (12) and a cold water pool (13); one end of the cold air pipe (11) is connected to a cold air source, and the other end extends to the interior of the solar thermal collector tank (21) and is connected to the cold air supply valve (12); the cold air pipe (11) is immersed below the liquid level of the cold water pool (13); the cold air source uses cold air at a certain depth underground or cold air in a cave in a mountain.

2. A solar heating expansion compressed air energy storage power generation system as claimed in claim 1, characterized in that: The compressed air energy storage device (3) comprises a high-pressure energy storage tank (31) and a high-pressure air intake valve (32), wherein the high-pressure air intake valve (32) is fixedly mounted on the high-pressure energy storage tank (31), and the high-pressure air intake valve (32) is connected to the boost tank (22) via a high-pressure air supply pipe (33).

3. A solar heating expansion compressed air energy storage power generation system as claimed in claim 2, characterized in that: The power generation device (4) comprises a cylinder body (41), a high-pressure air jet nozzle (42), a flywheel (43), a generator (44) and a driving mechanism (45); the generator (44) is fixedly mounted on the cylinder body (41); the flywheel (43) is arranged on the rotating shaft of the generator (44); the high-pressure air jet nozzle (42) is fixedly connected to the cylinder body (41) and connected to the high-pressure energy storage tank (31) through a power generation gas supply pipe (46); the high-pressure gas in the high-pressure energy storage tank (31) is ejected through the high-pressure air jet nozzle (42) so that the driving mechanism (45) drives the flywheel (43) to rotate.

4. A solar heating expansion compressed air energy storage power generation system as claimed in claim 3, characterized in that: The driving mechanism (45) comprises a power piston (451) and a connecting rod (452). The power piston (451) is arranged in the cylinder body (41) and is tightly fitted with the inner wall. One end of the connecting rod (452) is rotationally connected to the power piston (451), and the other end is rotationally connected to the flywheel (43). The power piston (451) moves to drive the flywheel (43) to rotate through the connecting rod (452).

5. A solar heating expansion compressed air energy storage power generation system as claimed in claim 1, characterized in that: The compressed air energy storage device (3) and the power generation device (4) are both provided in plurality, and each compressed air energy storage device (3) is connected to one or more power generation devices (4).

6. A solar heating expansion compressed air energy storage power generation system as claimed in claim 1, characterized in that: The atmospheric air intake valve (26) is a one-way valve or a solenoid valve, and the direction of the one-way valve is from the outside of the boost tank (22) to the inside thereof.

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