Cooling and heating power supply system

Abstract

The invention provides a cooling and heating power supply system. The cooling, heating and power supply system comprises a photovoltaic photo-thermal assembly, a power storage conversion assembly, a heat exchanger, a heat pump assembly and a heat storage assembly, in the heat storage mode, a first heat exchange part releases heat outwards, and a second heat exchange part absorbs heat outwards, in the heat release mode, the first heat exchange part absorbs heat outwards, and the second heat exchange part releases heat outwards. The heat storage assembly comprises a buried pipe heat storage piece and a salt well heat storage piece, and the buried pipe heat storage piece and the salt well heat storage piece both communicate with the heat exchanger. In the heat storage mode, the first heat exchange piece communicates with the buried pipe heat storage piece and the salt well heat storage piece, and heat in the first heat exchange piece is released into the buried pipe heat storage piece and the salt well heat storage piece; and in the heat release mode, the second heat exchange piece communicates with the buried pipe heat storage piece and the salt well heat storage piece, and heat in the buried pipe heat storage piece and the salt well heat storage piece is released outwards. Heat storage and supply are more stable, and the reliability and adaptability of the cooling heating and power supply system are enhanced.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic and photothermal technology, and more specifically, to a cooling, heating, and power supply system. Background Technology

[0002] Solar photovoltaic / solar thermal integration technology has become an important choice for green building energy systems because it can simultaneously output electrical and thermal energy. It uses heat collection pipes on the back of photovoltaic and solar thermal modules to remove waste heat with a working fluid, thus improving power generation efficiency and recovering heat energy.

[0003] However, current traditional solar photovoltaic / solar thermal integrated systems are mostly used in conventional climate zones, and their heat storage methods are too simplistic. In particular, the energy supply of independent buildings in high-altitude and cold regions is more significantly affected by low temperatures, resulting in a substantial decrease in the reliability of system operation. Summary of the Invention

[0004] To at least partially address the problems existing in the prior art, according to one aspect of the present invention, a cooling, heating, and electrical supply system is provided. The cooling, heating, and electrical supply system includes:

[0005] Photovoltaic and solar thermal modules;

[0006] Energy storage and conversion components are used to store and convert electrical energy generated by photovoltaic and solar thermal modules.

[0007] Heat exchangers are used to absorb the heat energy generated by photovoltaic thermal modules.

[0008] A heat pump assembly includes a first heat exchanger, an expansion valve, a second heat exchanger, and a compressor connected in sequence to form a circuit. The heat pump assembly has a heat storage mode and a heat release mode. In the heat storage mode, the first heat exchanger releases heat to the outside and the second heat exchanger absorbs heat to the outside. In the heat release mode, the first heat exchanger absorbs heat to the outside and the second heat exchanger releases heat to the outside. The assembly also includes a heat storage component, which includes a buried pipe heat storage component and a salt well heat storage component, both of which are connected to the heat exchanger.

[0009] In the heat storage mode, the first heat exchanger is connected to both the buried pipe heat storage device and the salt well heat storage device, and releases the heat in the first heat exchanger to the buried pipe heat storage device and the salt well heat storage device; in the heat release mode, the second heat exchanger is connected to both the buried pipe heat storage device and the salt well heat storage device, and releases the heat in the buried pipe heat storage device and the salt well heat storage device to the outside.

[0010] For example, the heat pump assembly also includes an air-cooled heat exchanger located between the expansion valve and the second heat exchanger and connected to both the expansion valve and the second heat exchanger.

[0011] For example, a salt well heat storage device includes a brine hot well heat exchanger.

[0012] For example, the buried pipe heat storage device includes a double U-shaped buried pipe heat exchanger.

[0013] For example, a first valve is provided at the inlet of the salt well thermal storage component to control the on / off state, and a second valve is provided at the inlet of the buried pipe thermal storage component to control the on / off state. In both thermal storage mode and thermal release mode, the second valve and the first valve are in the open state.

[0014] For example, the outlets of the salt well thermal storage component and the buried pipe thermal storage component are both connected to the inlet of the connecting pipe. The connecting pipe has a first pipe outlet and a second pipe outlet. The first pipe outlet is connected to the inlet of the heat exchanger, and the second pipe outlet is connected to the inlet of the first heat exchange component. A third valve is provided on the connecting pipe to control the connection and disconnection between the outlet of the salt well thermal storage component and the inlet of the heat exchanger, as well as between the outlet of the buried pipe thermal storage component and the inlet of the heat exchanger. In thermal storage mode, the third valve is in the open state, and in thermal release mode, the third valve is in the closed state.

[0015] For example, a third pipe outlet is provided on the connecting pipe, which is connected to the inlet of the second heat exchanger. A fourth valve is provided on the connecting pipe to control the connection and disconnection between the outlet of the salt well heat storage component and the inlet of the second heat exchanger, as well as between the outlet of the buried pipe heat storage component and the inlet of the second heat exchanger. In the heat storage mode, the fourth valve is in the closed state, and in the heat release mode, the fourth valve is in the open state.

[0016] For example, a first water supply component and a first pump body are provided on the connecting pipe to regulate the outflow rate of the medium in the thermal storage component.

[0017] For example, the cooling, heating and power supply system also includes a regulating device that is electrically connected to the heat exchanger, the first heat exchanger, the second heat exchanger and the first pump body to control the power of the heat exchanger, the first heat exchanger, the second heat exchanger and the first pump body.

[0018] For example, the energy storage conversion component includes a photovoltaic controller, a battery, and an inverter. The photovoltaic controller is connected to the photovoltaic thermal module, the battery is connected to the photovoltaic controller, and the inverter is connected to the photovoltaic controller.

[0019] The cooling, heating, and power supply system provided in this application can store excess heat in buried pipe heat storage devices and salt well heat storage devices in heat storage mode, and release the stored heat in heat release mode. The system can operate stably in low-temperature environments below -25℃, making it better adaptable to various climates, especially suitable for the cold and arid climate of the Qinghai-Tibet Plateau, and can be installed in independent buildings in high-altitude and cold regions. The salt well heat storage devices can better compensate for the slow heat storage and release rates of buried pipe heat storage devices, improving heat storage and heating efficiency. The combined heat storage and release of buried pipe and salt well heat storage devices avoids the influence of geological conditions and soil thermal characteristics changes on single heat storage methods, achieving efficient heating even under continuous cloudy days or extremely cold weather, resulting in more stable heat storage and heating, and enhancing the reliability and adaptability of the cooling, heating, and power supply system.

[0020] A series of simplified concepts are introduced in the description of the invention, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to limit the scope of protection of the claimed technical solution.

[0021] The advantages and features of the present invention will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] The following figures are included as part of this invention for understanding its principles. The figures illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the figures,

[0023] Figure 1 This is a schematic diagram of a cooling, heating, and electricity supply system according to an exemplary embodiment of the present invention.

[0024] The above figures include the following reference numerals:

[0025] 10. Cooling, heating, and power supply system; 110. Photovoltaic and solar thermal modules; 120. Energy storage and conversion modules; 1210. Photovoltaic controller; 1220. Storage battery; 1230. Inverter; 130. Heat exchanger; 1410. First heat exchanger; 1420. Expansion valve; 1430. Second heat exchanger; 1440. Compressor; 1450. Air-cooled heat exchanger; 1460. Four-way reversing valve; 150. Thermal storage module; 1510. Buried pipe thermal storage module; 1520. Salt well thermal storage module; 1610. First valve; 1620. Second valve; 1630. Third valve; 1640. Fourth valve; 1650. Fifth valve; 170. Connecting pipe; 1810. First water supply module; 1820. First pump body; 1830. Second pump body; 1840. Second water supply module; 190. Regulating device. Detailed Implementation

[0026] In the following description, numerous details are provided to enable a thorough understanding of the invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the invention, and that the invention can be practiced without one or more of these details. Furthermore, to avoid obscuring the invention, some technical features well-known in the art have not been described in detail.

[0027] This invention provides a cooling, heating, and electricity supply system. (Refer to...) Figure 1 The cooling, heating, and power supply system 10 may include a photovoltaic (PV) thermal module 110, an energy storage and conversion module 120, a heat exchanger 130, a heat pump assembly, and a thermal storage module 150. The PV thermal module 110 can simultaneously generate electrical and thermal energy. The energy storage and conversion module 120 can be used to store and convert the electrical energy generated by the PV thermal module 110. The heat exchanger 130 can be used to absorb the thermal energy generated by the PV thermal module 110. The heat pump assembly includes a first heat exchanger 1410, an expansion valve 1420, a second heat exchanger 1430, and a compressor 1440 connected in a loop. The heat pump assembly has a thermal storage mode and a thermal release mode. In the thermal storage mode, the first heat exchanger 1410 releases heat to the outside while the second heat exchanger 1430 absorbs heat to the outside. In the thermal release mode, the first heat exchanger 1410 absorbs heat to the outside while the second heat exchanger 1430 releases heat to the outside. The thermal storage component 150 includes a buried pipe thermal storage component 1510 and a salt well thermal storage component 1520. Both the buried pipe thermal storage component 1510 and the salt well thermal storage component 1520 are connected to the heat exchanger 130, meaning that the heat in the heat exchanger 130 can be transferred to the buried pipe thermal storage component 1510 and the salt well thermal storage component 1520 in different modes.

[0028] In the heat storage mode, the first heat exchanger 1410 is connected to both the buried pipe heat storage unit 1510 and the salt well heat storage unit 1520, releasing heat from the first heat exchanger 1410 into both the buried pipe heat storage unit 1510 and the salt well heat storage unit 1520. That is, the heat in the first heat exchanger 1410 is transferred and stored in the buried pipe heat storage unit 1510 and the salt well heat storage unit 1520. In the heat release mode, the second heat exchanger 1430 is connected to both the buried pipe heat storage unit 1510 and the salt well heat storage unit 1520, releasing heat from both units to the outside. That is, in the heat release mode, heat from the buried pipe heat storage unit 1510 and the salt well heat storage unit 1520 can be transferred to the second heat exchanger 1430 and released to the outside. The second heat exchanger 1430 can be installed in the room where temperature adjustment is required. In heat storage mode, the second heat exchanger 1430 acts as an evaporator to absorb heat from the indoor environment, thus cooling the room. In heat release mode, the second heat exchanger 1430 acts as a condenser to release heat into the room, thus raising the room temperature. The heat storage mode is suitable for summer and / or daytime, while the heat release mode is suitable for winter and / or nighttime. For example, the mode can be switched according to ambient temperature and light intensity. For instance, when the ambient temperature is below a predetermined threshold, the mode is switched to heat release mode, where the photovoltaic thermal module 110, the buried pipe heat storage device 1510, and the salt well heat storage device 1520 provide heat together. This is particularly suitable for areas with salt lake resources, such as Qinghai. For example, at least one of the buried pipe heat storage device 1510 and the salt well heat storage device 1520 can also be connected to the user's heating network.

[0029] In thermal storage mode, the electrical energy generated by the photovoltaic thermal module 110 is stored or converted by the energy storage conversion module 120, and the generated heat energy is absorbed by the heat exchanger 130. The second heat exchanger 1430 absorbs indoor heat to cool the room. The first heat exchanger 1410 transfers the heat released by the heat pump module to the buried pipe thermal storage module 1510 and the salt well thermal storage module 1520. The heat exchanger 130 transfers the heat to the buried pipe thermal storage module 1510 and the salt well thermal storage module 1520, thus completing the heat storage. In thermal release mode, the buried pipe thermal storage module 1510 and the salt well thermal storage module 1520 can release the stored heat, which is then transferred to the second heat exchanger 1430. During the day, the heat energy generated by the photovoltaic thermal module 110 is supplemented to the thermal storage module 150 through the heat exchanger 130. Together with the heat stored in the thermal storage mode, it serves as a heat source, flowing to the second heat exchanger 1430, which releases heat to raise the indoor temperature. In terms of heat source provision, the photovoltaic thermal module 110 can be used as the main heat source, while the buried pipe heat storage component 1510 and the salt well heat storage component 1520 can be used as auxiliary heat sources.

[0030] The cooling, heating, and power supply system 10 provided in this application can store excess heat in the buried pipe heat storage component 1510 and the salt well heat storage component 1520 in heat storage mode, and release the stored heat in heat release mode. The cooling, heating, and power supply system 10 can operate stably in low-temperature environments below -25℃, making it better adaptable to various climates, especially suitable for the cold and arid climate of the Qinghai-Tibet Plateau, and can be installed in independent buildings in high-altitude and cold regions. The installation of the salt well heat storage component 1520 can better compensate for the slow heat storage and release rate of the buried pipe heat storage component 1510, improving the efficiency of heat storage and heating. The combined heat storage and release of the buried pipe heat storage component 1510 and the salt well heat storage component 1520 can avoid the influence of geological conditions and soil thermal characteristics changes on a single heat storage method, and can still achieve efficient heating even in continuous cloudy days or extremely cold weather, making heat storage and heating more stable, and enhancing the reliability and adaptability of the cooling, heating, and power supply system 10.

[0031] For example, refer to Figure 1 The heat pump assembly may further include an air-cooled heat exchanger 1450, which is located between the expansion valve 1420 and the second heat exchanger 1430 and is connected to both the expansion valve 1420 and the second heat exchanger 1430. The air-cooled heat exchanger 1450 can assist in adjusting the heat exchange efficiency of the heat pump assembly, ensuring the cooling and heating effects. It has higher stability in low-temperature environments, better meeting the needs of complex climates. The heat exchange efficiency of the cooling, heating, and power supply system 10 is more balanced in different modes, reducing energy waste. For example, a four-way reversing valve 1460 may also be provided between the compressor 1440 and the second heat exchanger 1430.

[0032] For example, refer to Figure 1 The salt well heat storage component 1520 includes a brine heat exchanger. Salt lake brine has a high specific heat capacity and high heat storage density, allowing the brine heat exchanger to efficiently absorb and store heat, thus enhancing the heat storage capacity of the cooling, heating, and power supply system 10. Utilizing the geological environment of the salt well, the brine heat exchanger can stably store heat over a long period, reducing heat loss and better adapting to the cyclical needs of heat storage and release. It fully utilizes existing salt lake resources, eliminating the need for large-scale additional heat storage facilities, reducing system costs, and complements the buried pipe heat storage component 1510, ensuring heating stability under low-temperature and variable operating conditions. For example, high-temperature hot water can release heat to the brine layer at a depth of 30-80 meters underground through the titanium tube heat exchanger, forming a thermal energy storage tank.

[0033] For example, refer to Figure 1The buried pipe heat storage component 1510 includes a double U-shaped buried pipe heat exchanger. Exemplarily, the double U-shaped buried pipe heat exchanger may include two sets of U-shaped pipes installed within a vertical borehole, with the ends of the U-shaped pipes connected in a U-shape. The double U-shaped buried pipe heat exchanger has a large heat exchange area, which can improve the heat exchange efficiency with the soil. The double U-shaped buried pipe heat exchanger has low flow resistance of the working fluid inside the pipes, resulting in more uniform heat transfer and reducing soil thermal imbalance caused by local overheating or undercooling. Combined with backfill material, it can further reduce heat loss and improve the heat storage and release stability of the buried pipe heat storage component 1510. Exemplarily, both the buried pipe heat storage component 1510 and the salt well heat storage component 1520 can be connected to a three-way valve.

[0034] For example, refer to Figure 1 A first valve 1610 is installed at the inlet of the salt well thermal storage component 1520 to control its on / off state, and a second valve 1620 is installed at the inlet of the buried pipe thermal storage component 1510 to control its on / off state. In both thermal storage and thermal release modes, both the second valve 1620 and the first valve 1610 are open. That is, the first valve 1610 controls whether the medium in the heat exchanger 130, the first heat exchanger 1410, and the second heat exchanger 1430 flows into the salt well thermal storage component 1520. The second valve 1620 controls whether the medium in the heat exchanger 130, the first heat exchanger 1410, and the second heat exchanger 1430 flows into the buried pipe thermal storage component 1510. The installation of the first valve 1610 and the second valve 1620 allows for independent flow control, flexibly adjusting the flow rate of the medium flowing into the salt well thermal storage component 1520 and the buried pipe thermal storage component 1510, thus preventing overload of any single thermal storage component. The salt well thermal storage unit 1520 and the buried pipe thermal storage unit 1510 operate simultaneously, forming a complementary backup. Even if one of them needs temporary maintenance, the other can still continuously store or release heat.

[0035] For example, refer to Figure 1The outlets of the salt well heat storage component 1520 and the buried pipe heat storage component 1510 are both connected to the inlet of the connecting pipe 170. The connecting pipe 170 has a first pipe outlet and a second pipe outlet. The first pipe outlet is connected to the inlet of the heat exchanger 130, and the second pipe outlet is connected to the inlet of the first heat exchange component 1410. A third valve 1630 is installed on the connecting pipe 170 to control the connection and disconnection between the outlet of the salt well heat storage component 1520 and the inlet of the heat exchanger 130, as well as between the outlet of the buried pipe heat storage component 1510 and the inlet of the heat exchanger 130. In the heat storage mode, the third valve 1630 is in the open state, and in the heat release mode, the third valve 1630 is in the closed state. In other words, in the heat storage mode, the medium in the buried pipe heat storage component 1510 and the salt well heat storage component 1520 can flow to the heat exchanger 130 and the first heat exchanger 1410. In the heat release mode, the buried pipe heat storage component 1510 and the salt well heat storage component 1520 are disconnected from the first heat exchanger 1410, and the medium in the buried pipe heat storage component 1510 and the salt well heat storage component 1520 will not flow to the first heat exchanger 1410.

[0036] For example, refer to Figure 1 A third outlet can be provided on the connecting pipe 170, which is connected to the inlet of the second heat exchanger 1430. A fourth valve 1640 is provided on the connecting pipe 170 to control the connection and disconnection between the outlet of the salt well heat storage unit 1520 and the inlet of the second heat exchanger 1430, as well as the connection and disconnection between the outlet of the buried pipe heat storage unit 1510 and the inlet of the second heat exchanger 1430. In the heat storage mode, the fourth valve 1640 is in the closed state, and in the heat release mode, the fourth valve 1640 is in the open state. In other words, in the heat release mode, the medium in the buried pipe heat storage component 1510 and the salt well heat storage component 1520 can flow to the heat exchanger 130 and the second heat exchanger 1430. In the heat storage mode, the buried pipe heat storage component 1510 and the salt well heat storage component 1520 are disconnected from the second heat exchanger 1430, and the medium in the buried pipe heat storage component 1510 and the salt well heat storage component 1520 will not flow to the second heat exchanger 1430.

[0037] For example, refer to Figure 1 A first water supply component 1810 and a first pump body 1820 can be installed on the connecting pipe 170 to regulate the outflow rate of the medium in the heat storage component 150. The first water supply component 1810 can replenish the medium loss in a timely manner, avoiding interruption of heat release or heat storage due to insufficient medium. The first pump body 1820 can precisely regulate the outflow rate of the medium to adapt to different heat transfer requirements in heat storage and heat release modes, preventing the flow rate from being too fast or too slow and affecting efficiency. The cooperation of the first water supply component 1810 and the first pump body 1820 can further improve the overall operational reliability of the cooling, heating and power supply system 10.

[0038] For example, refer to Figure 1 The heating, cooling, and power supply system 10 may further include a regulating device 190, which is electrically connected to the heat exchanger 130, the first heat exchanger 1410, the second heat exchanger 1430, and the first pump body 1820 to control the power of these components. For example, a fifth valve 1650, a second pump body 1830, and a second water supply component 1840 may be provided between the photovoltaic thermal module 110 and the heat exchanger 130. For example, the regulating device 190 may also be electrically connected to at least one of the first valve 1610, the second valve 1620, the third valve 1630, the fourth valve 1640, and the fifth valve 1650. The regulating device 190 may be a PID controller (Proportional-Integral-Derivative Controller). The regulating device 190 can monitor the temperature and flow rate in each pipeline in real time, and dynamically adjust the operating conditions of the heat exchanger 130, the first heat exchanger 1410, the second heat exchanger 1430, and the first pump body 1820 to ensure efficient system operation. During summer nights, the system can stop operating and restart the nighttime cooling cycle when the temperature difference is suitable. The regulating device 190, combined with the clean energy supply in the cooling, heating, and electricity supply system 10, constructs a highly efficient and energy-saving closed-loop control system, significantly reducing energy consumption while ensuring comfort, and achieving an organic unity of green energy and intelligent control.

[0039] For example, refer to Figure 1 The energy storage and conversion component 120 includes a photovoltaic controller 1210, a battery 1220, and an inverter 1230. The photovoltaic controller 1210 is connected to the photovoltaic thermal module 110, the battery 1220 is connected to the photovoltaic controller 1210, and the inverter 1230 is connected to the photovoltaic controller 1210. The photovoltaic controller 1210 receives electrical energy from the photovoltaic thermal module 110, protects downstream equipment through voltage stabilization and current limiting, and distributes electrical energy as needed, either storing it in the battery 1220 or transmitting it to the inverter 1230. The battery 1220 can store excess electrical energy generated by the photovoltaic thermal module 110 when there is sufficient sunlight, providing supplementary power during periods without sunlight or peak electricity consumption. The inverter 1230 can convert the DC power output from the photovoltaic thermal module 110 or the battery 1220 into AC power required by the cooling, heating, and power supply system 10 and other electrical equipment, ensuring that the electrical energy is suitable for use.

[0040] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0044] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, those skilled in the art will understand that the present invention is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the present invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling, heating, and electricity supply system, characterized in that, include: Photovoltaic and solar thermal modules; An energy storage and conversion component, wherein the energy storage and conversion component is used to store and convert the electrical energy generated by the photovoltaic and solar thermal components; A heat exchanger for absorbing the heat energy generated by the photovoltaic thermal module; A heat pump assembly includes a first heat exchanger, an expansion valve, a second heat exchanger, and a compressor connected in sequence in a loop. The heat pump assembly has a heat storage mode and a heat release mode. In the heat storage mode, the first heat exchanger releases heat to the outside and the second heat exchanger absorbs heat to the outside. In the heat release mode, the first heat exchanger absorbs heat to the outside and the second heat exchanger releases heat to the outside. as well as A thermal storage component, comprising a buried pipe thermal storage component and a salt well thermal storage component, wherein both the buried pipe thermal storage component and the salt well thermal storage component are connected to the heat exchanger; In the heat storage mode, the first heat exchanger is connected to both the buried pipe heat storage device and the salt well heat storage device, and releases the heat in the first heat exchanger to the buried pipe heat storage device and the salt well heat storage device; in the heat release mode, the second heat exchanger is connected to both the buried pipe heat storage device and the salt well heat storage device, and releases the heat in the buried pipe heat storage device and the salt well heat storage device to the outside.

2. The cooling, heating, and power supply system according to claim 1, characterized in that, The heat pump assembly also includes an air-cooled heat exchanger, which is located between the expansion valve and the second heat exchanger and is connected to both the expansion valve and the second heat exchanger.

3. The cooling, heating, and power supply system according to claim 1, characterized in that, The salt well heat storage component includes a brine hot well heat exchanger.

4. The cooling, heating, and power supply system according to claim 1, characterized in that, The buried pipe heat storage component includes a double U-shaped buried pipe heat exchanger.

5. The cooling, heating, and power supply system according to claim 1, characterized in that, A first valve is provided at the inlet of the salt well thermal storage component to control the on / off state, and a second valve is provided at the inlet of the buried pipe thermal storage component to control the on / off state. In both the thermal storage mode and the thermal release mode, the second valve and the first valve are in the open state.

6. The cooling, heating, and power supply system according to claim 1, characterized in that, The outlets of the salt well thermal storage component and the buried pipe thermal storage component are both connected to the inlet of a connecting pipe. The connecting pipe has a first outlet and a second outlet. The first outlet is connected to the inlet of the heat exchanger, and the second outlet is connected to the inlet of the first heat exchange component. A third valve is installed on the connecting pipe to control the connection between the outlet of the salt well thermal storage component and the inlet of the heat exchanger, as well as the connection between the outlet of the buried pipe thermal storage component and the inlet of the heat exchanger. In the thermal storage mode, the third valve is in the open state, and in the thermal release mode, the third valve is in the closed state.

7. The cooling, heating, and power supply system according to claim 6, characterized in that, The connecting pipe is provided with a third pipe outlet, which is connected to the inlet of the second heat exchanger. The connecting pipe is provided with a fourth valve to control the connection and disconnection between the outlet of the salt well heat storage device and the inlet of the second heat exchanger, as well as between the outlet of the buried pipe heat storage device and the inlet of the second heat exchanger. In the heat storage mode, the fourth valve is in the closed state, and in the heat release mode, the fourth valve is in the open state.

8. The cooling, heating, and power supply system according to claim 6, characterized in that, The connecting pipe is equipped with a first water supply component and a first pump body to regulate the outflow rate of the medium in the thermal storage component.

9. The cooling, heating, and power supply system according to claim 8, characterized in that, The heating, cooling, and power supply system also includes a regulating device, which is electrically connected to the heat exchanger, the first heat exchange element, the second heat exchange element, and the first pump body to control the power of the heat exchanger, the first heat exchange element, the second heat exchange element, and the first pump body.

10. The cooling, heating, and power supply system according to claim 1, characterized in that, The energy storage conversion component includes a photovoltaic controller, a battery, and an inverter. The photovoltaic controller is connected to the photovoltaic thermal module, the battery is connected to the photovoltaic controller, and the inverter is connected to the photovoltaic controller.

Images