Multi-source heat pump energy storage and supply system and control method

Abstract

The present application provides a multi-source heat pump energy storage and supply system and control method, which relates to the field of energy storage and supply technology. The system includes an energy storage unit, an AAHP unit, a condenser heat exchange unit, an AWHP unit, an energy supply terminal and a controller; the condenser end of the outdoor unit of the AAHP unit is connected to the heating end of the condenser heat exchange unit; the water supply end of the condenser heat exchange unit and the water supply end of the AWHP unit are connected to the first water supply end of the energy storage unit, and the first return water end of the energy storage unit is connected to the return water end of the condenser heat exchange unit and the return water end of the AWHP unit; the second water supply end of the energy storage unit is connected to the water supply end of at least one energy supply terminal, and the return water end of at least one energy supply terminal is connected to the second return water end of the energy storage unit; the control end of the AAHP unit, the control end of the condenser heat exchange unit, the control end of the AWHP unit and the control end of the energy storage unit are connected to the controller. The present application can ensure the operating cost and improve the energy supply effect.

Description

Technical Field

[0001] The present application relates to the field of energy storage and supply technology, and in particular to a multi-source heat pump energy storage and supply system and a control method. Background Art

[0002] With the continuous development of the "clean heating" work, the "double substitution" energy transformation has become the focus, that is, the use of electricity and gas to replace coal technology to gradually achieve the replacement of coal.

[0003] Among them, the electricity-replacing-coal technology in clean heating mainly includes direct electric heating and heat pump systems. However, direct electric heating consumes more electricity and has a higher cost; the heat pump system consumes only a small amount of electricity to drive the heat transfer from low to high, which is more than three times that of direct electric heating and is the inevitable direction of electric heating.

[0004] Although the heating efficiency of the heat pump system has been greatly improved compared to direct electric heating, the energy supply and operating costs of the entire system cannot be underestimated, and the operating costs are still relatively high. Summary of the invention

[0005] The purpose of this application is to provide a multi-source heat pump energy storage supply system and control method to address the deficiencies in the above-mentioned prior art, so as to ensure energy supply efficiency and improve energy supply effect while reducing the operating cost of the energy supply system.

[0006] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0007] In a first aspect, an embodiment of the present application provides a multi-source heat pump energy storage and energy supply system, comprising: an energy storage unit, an AAHP unit, a condenser heat exchange unit, an AWHP unit, at least one energy supply terminal, and a controller; wherein each energy supply terminal is arranged in a room to be supplied with energy; wherein the AAHP unit is an air-to-air heat pump unit, and the AWHP unit is an air-to-water heat pump;

[0008] The condenser end of the outdoor unit of the AAHP unit is connected to the indoor unit of the AAHP unit arranged in a room to be powered, and the condenser end of the outdoor unit of the AAHP unit is also connected to the heating end of the condenser heat exchange unit;

[0009] The water supply end of the condenser heat exchange unit and the water supply end of the AWHP unit are respectively connected to the first water supply end of the energy storage unit through a water supply pipe, and the first water return end of the energy storage unit is also connected to the return water end of the condenser heat exchange unit and the return water end of the AWHP unit through a return water pipe;

[0010] The second water supply end of the energy storage unit is connected to the water supply end of the at least one energy supply end through a water supply pipe, and the return water end of the at least one energy supply end is connected to the second return water end of the energy storage unit through a return water pipe;

[0011] The control end of the AAHP unit, the control end of the condenser heat exchange unit, the control end of the AWHP unit and the control end of the energy storage unit are respectively communicated with the controller to control the working mode of the AAHP unit, the condenser heat exchange unit, the AWHP unit and the energy storage unit.

[0012] Optionally, the system further includes: a preset heat pump unit and a buried pipe, the preset heat pump unit is a WWHP unit or a DSHP unit; the two water pipe ports of the buried pipe are respectively connected to the two water source ends of the preset heat pump unit; the water supply end of the preset heat pump unit is connected to the first water supply end of the energy storage unit through a water supply pipe, and the return water end of the preset heat pump unit is connected to the first return water end of the energy storage unit through a return water pipe; wherein the WWHP unit is a water-to-water heat pump unit, and the DSHP unit is a dual-source heat pump unit;

[0013] The control end of the preset heat pump unit is also communicatively connected to the controller.

[0014] Optionally, the system further includes: a water source buffer tank, wherein two ends of the water source buffer tank are respectively connected to two water pipe openings of the buried pipe.

[0015] Optionally, the system further comprises: a solar thermal collector, wherein a water supply end of the solar thermal collector is connected to any water source end of the preset heat pump unit, and a water return end of the solar thermal collector is also connected to a water pipe opening of the buried pipe;

[0016] The control end of the solar thermal collection device is also communicatively connected to the controller.

[0017] Optionally, the water supply end of the solar thermal collection device is also connected to the first water supply end of the energy storage unit through a water supply pipe, and the return water end of the solar thermal collection device is also connected to the first return water end of the energy storage unit through a return water pipe.

[0018] Optionally, the return pipe of the condenser heat exchange unit, the water supply pipe of the AWHP unit, the return pipe of each energy supply end, the water supply pipe of the preset heat pump unit, the water pipe at the first water source end of the preset heat pump unit, the water pipe corresponding to the second water source end in the buried pipe, and the water supply pipe of the solar thermal collector are respectively provided with water pumps;

[0019] The control end of the water pump is in communication connection with the controller.

[0020] Optionally, a first switching valve is provided on the water supply pipe between the water supply end of the solar thermal collection equipment and the first water supply end of the energy storage unit, and a second switching valve is provided on the water supply pipe between the water supply end of the solar thermal collection equipment and the second water source end of the preset heat pump unit; the first switching valve and the second switching valve are respectively communicated and connected to the controller.

[0021] Optionally, the number of the AAHP units is at least one, and the indoor unit of each AAHP unit in the at least one AAHP unit is arranged in a room to be powered;

[0022] The condenser end of the outdoor unit of each AAHP unit is connected to the indoor unit of each AAHP unit arranged in a room to be powered;

[0023] The condenser end of the outdoor unit of each AAHP unit is respectively connected to the heating end of the condenser heat exchange unit.

[0024] Optionally, the second water supply end of the energy storage unit is connected to a main water supply pipe, the main water supply pipe is connected to at least one branch water supply pipe, and each branch water supply pipe is respectively connected to the water supply end of the at least one energy supply end;

[0025] The second water return end of the energy storage unit is connected to the main water return pipe, and the main water return pipe is connected to at least one branch water return pipe, and each branch water return pipe is respectively connected to the water return end of the at least one energy supply end.

[0026] Optionally, each energy supply terminal is: a horizontal fan coil terminal, a vertical fan coil terminal, or a radiant heating terminal.

[0027] In a second aspect, an embodiment of the present application further provides an energy storage and supply control method, which uses the controller in the multi-source heat pump energy storage and supply system described in the first aspect above, and the method includes:

[0028] Get outdoor temperature, historical electricity consumption data, and current time;

[0029] Determine the target operation mode of the multi-source heat pump energy storage and supply system according to the outdoor temperature, the power consumption data and the current time; the target operation mode is a heating operation mode or a cooling operation mode;

[0030] The multi-source heat pump energy storage and supply system is controlled to operate in the target operation mode.

[0031] Optionally, if the target operation mode is the first energy supply operation mode, controlling the multi-source heat pump energy storage and supply system to operate in the target operation mode includes:

[0032] Based on the first energy supply operation mode, the outdoor unit of the AAHP unit, the AWHP unit and the preset heat pump unit are controlled to work independently or jointly to store energy in the energy storage unit, and the circulating water pump of each room to be supplied is controlled to be turned on, and the energy storage unit supplies energy to each room to be supplied.

[0033] Optionally, if the target operation mode is the second energy supply operation mode, controlling the multi-source heat pump energy storage and supply system to operate in the target operation mode includes:

[0034] Based on the second energy supply operation mode, all power-consuming units in the multi-source heat pump energy storage supply system are controlled to be shut down, and the circulating water pump of each room to be supplied is controlled to be turned on, and the energy storage unit supplies energy to each room to be supplied.

[0035] Optionally, if the target operation mode is the third energy supply operation mode, controlling the multi-source heat pump energy storage supply system to operate in the target operation mode includes:

[0036] Based on the third energy supply operation mode, the indoor unit of the AAHP unit is controlled to provide heating and energy to the room to be powered where the indoor unit of the AAHP unit is located, and the outdoor unit of the AAHP unit is controlled to store energy in the heat exchange unit.

[0037] Optionally, if the target operation mode is the fourth energy supply operation mode, controlling the multi-source heat pump energy storage supply system to operate in the target operation mode includes:

[0038] Based on the fourth energy supply operation mode, the water pump between the buried pipe and the water source buffer tank, and the water pump between the solar thermal collector and the preset heat pump unit are controlled to be turned on, so that the water source buffer tank collects the first shallow geothermal energy collected by the buried pipe and the low-level solar energy collected by the solar thermal collector, and controls the preset heat pump unit to operate, so as to increase the low-level thermal energy and store the heat in the energy storage unit, wherein the low-level thermal energy includes: the first shallow geothermal energy and / or the low-level solar energy; or

[0039] Based on the fourth energy supply operation mode, the switching valve between the solar thermal collection equipment and the preset heat pump unit, and the switching valve between the preset heat pump unit and the energy storage unit are controlled to be closed, and the water pump between the buried pipe and the water source buffer tank is controlled to be opened, so that the water source buffer tank collects the second shallow geothermal energy collected by the buried pipe, and the preset heat pump unit is controlled to operate, so as to lift the second shallow geothermal energy and store the cold energy in the energy storage unit.

[0040] Optionally, if the target operation mode is the fifth energy supply operation mode, and the fifth energy supply operation mode is the heating operation mode, then controlling the multi-source heat pump energy storage supply system to operate in the target operation mode includes:

[0041] Based on the fifth energy supply operation mode, the switching valve between the solar thermal collection device and the preset heat pump unit is controlled to be closed, while the switching valve between the solar thermal collection device and the energy storage unit is opened, so that the solar thermal collection device can store heat.

[0042] The multi-source heat pump energy storage and supply system and control method provided in the embodiment of the present application can add a condenser heat exchange unit and an energy storage unit on the basis of the AAHP unit, so as to realize the energy storage of the AAHP unit and the energy storage unit. It can also be connected to the AWHP unit to realize the energy storage of the AWHP unit and the energy storage unit. In this case, the energy storage unit can also be used to supply energy to the energy supply terminals arranged in each room, thereby realizing a multi-source heat pump energy storage function system, which can meet the energy supply needs of multiple rooms and the increased energy supply area in the rooms that need energy supply, and improve the energy supply effect while ensuring the operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of the structure of a multi-source heat pump energy storage and supply system provided in an embodiment of the present application;

[0045] Figure 2 A schematic diagram of the structure of another multi-source heat pump energy storage and supply system provided in an embodiment of the present application;

[0046] Figure 3 A structural schematic diagram of another multi-source heat pump energy storage and supply system provided in an embodiment of the present application;

[0047] Figure 4 A structural schematic diagram of another multi-source heat pump energy storage and supply system provided in an embodiment of the present application;

[0048] Figure 5 A flow chart of a multi-source heat pump energy storage and supply control method provided in an embodiment of the present application;

[0049] Figure 6 A schematic diagram of a multi-source heat pump energy storage and supply control device provided in an embodiment of the present application;

[0050] Figure 7 A schematic diagram of the structure of a controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0052] The multi-source heat pump energy storage and supply systems provided in the following embodiments of the present application can be applied to indoor rooms in areas where energy supply is required, such as heating or cooling. For example, in areas with heating and cooling needs, a multi-source heat pump energy storage and supply system can be used to heat indoor rooms during heating time periods, and to cool indoor rooms during cooling or cooling time periods. In areas within cooling areas, the multi-source heat pump energy storage and supply system can be used to cool indoor rooms during cooling time periods.

[0053] The multi-source heat pump energy storage and supply system and the corresponding control method provided in the embodiments of the present application are exemplified by multiple embodiments in combination with the accompanying drawings as follows. Figure 1 This is a schematic diagram of the structure of a multi-source heat pump energy storage and supply system provided in an embodiment of the present application. Figure 1 As shown, the multi-source heat pump energy storage and supply system may include: an energy storage unit 1, an air to air heat pump (AAHP) unit, a condenser heat exchange unit 4, an air to water heat pump (AWHP) unit 5, at least one energy supply terminal and a controller 9. Among them, each energy supply terminal is arranged in a room to be supplied with energy. Optionally, each energy supply terminal can be: a horizontal fan coil unit, a vertical fan coil unit, or a radiant heating terminal. In specific practical applications, corresponding types of energy supply terminals can be set based on the energy supply requirements of each room. If the energy supply requirements of the first room and the second room are intermittent energy supply and easy to install, the energy supply terminal set in the first room can be a vertical fan coil terminal 6, and the energy supply terminal set in the second room can be a horizontal fan coil terminal 7. If the energy supply demand of the nth room is continuous heating and comfort is prioritized, the energy supply terminal set in the nth room can be a radiant heating terminal 8. In other examples, for continuous heating and comfort-first energy supply requirements, energy supply terminals in the form of heated beds or heated walls can also be used. The energy supply terminals set in the above rooms are only examples, and other settings are also possible, and the embodiments of the present application are not limited to this.

[0054] With the energy storage unit 1 as the center, each type of energy supply terminal can be individually configured with a circulating water pump and a control terminal, and communicated with the controller to achieve flexible expansion and plug-and-play of the energy supply terminal.

[0055] The AAHP unit includes: an outdoor unit 2 and an indoor unit 3, wherein the condenser end of the outdoor unit 2 of the AAHP unit is connected to the indoor unit 3 of the AAHP unit arranged in a room to be powered. For example, the indoor unit 3 is arranged in the first room and is connected to the condenser end of the outdoor unit 2. It should be noted that the AAHP unit can also be called a heat pump hot air machine or an air source heat pump hot air machine. The condenser end of the outdoor unit 2 of the AAHP unit is also connected to the heating end of the condenser heat exchange unit 4.

[0056] The condenser end of the outdoor unit 2 of the AAHP unit can deliver the condensing agent to the indoor unit 3, so that the indoor unit 3 can supply energy such as heating or cooling to the room based on the condensing agent. The condensing agent of the outdoor unit 2 of the AAHP unit can also be delivered to the condenser heat exchange unit 4, so that the condensing agent uses the aqueous solution as the heat exchange medium to achieve the cooling or heating function of the aqueous solution, and supply water to the first water supply end of the energy storage unit 1 through the water supply pipe to achieve heat storage or cold storage of the energy storage unit 1.

[0057] The water supply end of the condenser heat exchange unit 4 and the water supply end of the AWHP unit 5 are connected to the first water supply end of the energy storage unit 1 through the water supply pipe, respectively. Among them, the water supply end of the condenser heat exchange unit 4 is connected to the first water supply end of the energy storage unit 1 through the water supply pipe, so that the condenser heat exchange unit 4 can supply water to the energy storage unit 1 based on the condensing agent transported from the outdoor unit 2, so as to realize the energy storage unit 1 based on the aqueous solution. The water supply end of the AWHP unit 5 is connected to the first water supply end of the energy storage unit 1 through the water supply pipe, so that the AWHP unit 5 can supply water to the energy storage unit 1 through the water supply pipe, so as to realize the energy storage based on the aqueous solution. That is, in this system, the energy storage unit 1 can store the energy generated by the AAHP unit through the condenser heat exchange unit 4, and can also store the energy generated by the AWHP unit.

[0058] The first water return end of the energy storage unit 1 is also connected to the water return end of the condenser heat exchange unit 4 and the water return end of the AWHP unit 5 through the water return pipe. The first water return end of the energy storage unit 1 can return water to the water return end of the condenser heat exchange unit 4 through the connection between the water return end and the water return end of the condenser heat exchange unit 4, so as to realize the energy storage cycle between the energy storage unit 1 and the condenser heat exchange unit 4; the first water return end of the energy storage unit 1 can return water to the water return end of the AWHP unit 5 through the connection between the water return end and the water return end of the AWHP unit 5, so as to realize the energy storage cycle between the energy storage unit 1 and the AWHP unit. Therefore, the energy storage unit 1 in this embodiment can also be called an energy storage cycle unit.

[0059] It should be noted that the AWHP unit 5 can also be called an air-cooled hot water heat pump unit, and if it is a micro unit, it can be a micro air-cooled hot water heat pump unit. The condenser heat exchange unit 4 can be mounted on the wall in an external manner.

[0060] The second water supply end of the energy storage unit 1 is connected to the water supply end of at least one energy supply terminal through a water supply pipe, and the return water end of at least one energy supply terminal is connected to the second return water end of the energy storage unit 1 through a return water pipe. The second water supply end of the energy storage unit 1 is connected to the water supply end of the energy supply terminal through the water supply pipe, and the return water end of the energy supply terminal is connected to the second return water end of the energy storage unit through the return water pipe, so that the energy storage unit 1 can realize the circulation energy supply to the room where the energy supply terminal is located.

[0061] The control end of the AAHP unit, the control end of the condenser heat exchange unit 4, the control end of the AWHP unit 5, and the control end of the energy storage unit 1 are respectively communicated with the controller 9 to control the working mode of the AAHP unit, the condenser heat exchange unit 4, the AWHP unit 5 and the energy storage unit 1.

[0062] Among them, the control end of the AAHP unit can be the control end of the outdoor unit of the AAHP unit, the control end of the AAHP unit, the control end of the condenser heat exchange unit 4, the control end of the AWHP unit 5, and the communication connection between the control end of the energy storage unit 1 and the controller 9 can be a wired communication connection or a wireless communication connection. Figure 1 The example description is made using wireless communication as a connection, but the present application is not limited to this.

[0063] The controller 9 can be connected to the outdoor temperature sensor in communication to obtain the outdoor temperature collected by the outdoor temperature sensor. The controller 9 can also be connected to the terminal device or the smart meter in communication to obtain historical electricity consumption data or peak and valley electricity price data. In this way, the controller 9 can determine the target operation mode of the multi-source heat pump energy storage and energy supply system based on the outdoor temperature, current time, historical electricity consumption data or peak and valley electricity price data, and control the working mode of the AAHP unit, the condenser heat exchange unit 4, the AWHP unit 5 and the energy storage unit 1 based on the target operation mode.

[0064] During the implementation process, the controller 9 can control the switching valves in the AAHP unit, the condenser heat exchange unit 4, the AWHP unit 5 and the energy storage unit 1 to achieve switching control of the working mode, that is, the working condition.

[0065] The energy storage unit 1 can be an open water energy storage unit or a phase change water energy storage unit. The energy storage unit 1 can be a stainless steel or plastic tank and installed on a wall, in a warehouse or in an idle control unit indoors, with low investment and easy installation.

[0066] For example, the energy storage unit 1 can be arranged on a building roof, such as a roof, which can realize the efficient operation of a multi-source heat pump energy storage supply system for clean heating transformation in northern regions.

[0067] It should be noted that the circulating liquid between the outdoor unit 2 and the indoor unit 3 of the above AAHP unit can be a refrigerant, and the circulating liquid between the outdoor unit 2 and the condenser heat exchange unit is also a refrigerant. However, the circulating liquid of the energy storage unit 1 and the circulating liquid of each functional terminal are aqueous solutions.

[0068] The multi-source heat pump energy storage and supply system provided in the embodiment of the present application can add a condenser heat exchange unit and an energy storage unit on the basis of the AAHP unit, so as to realize the energy storage of the AAHP unit and the energy storage unit. It can also be connected to the AWHP unit to realize the energy storage of the AWHP unit and the energy storage unit. In this case, the energy storage unit can also be used to supply energy to the energy supply terminals arranged in each room, thereby realizing a multi-source heat pump energy storage function system, which can meet the energy supply needs of multiple rooms and the increased energy supply area in the rooms that need energy supply, and improve the energy supply effect while ensuring the operating cost.

[0069] In addition, the system may also be provided with a controller which is respectively communicated with the control end of the AAHP unit, the control end of the condenser heat exchange unit, the control end of the AWHP unit and the control end of the energy storage unit, so as to realize the control of the working mode of the multi-source heat pump energy storage function system, so that the multi-source heat pump energy storage function system meets the corresponding energy supply demand.

[0070] In the system provided in this embodiment, an external condenser heat exchange unit and an energy storage unit are added to the AAHP unit arranged in the building to form a household multi-source heat pump energy storage and supply system, and the condenser heat exchange unit, the energy storage unit, and the AWHP unit are all communicatively connected with the controller, so as to realize heat storage in winter and cold storage in summer, as well as low-cost cooling and heating.

[0071] In the above Figure 1 On this basis, the embodiment of the present application can also provide an implementation example of a multi-source heat pump energy storage and supply system. Figure 2 This is a schematic diagram of another multi-source heat pump energy storage and supply system provided in an embodiment of the present application. Figure 2 As shown, the multi-source heat pump energy storage and supply system is Figure 1On the basis of the system shown, it can also include: a preset heat pump unit 10 and a buried pipe 11, the preset heat pump unit 10 is a water to water heat pump (WWHP) unit or a double source heat pump (DSHP) unit. The two water pipe ports of the buried pipe 11 are respectively connected to the two water source ends of the preset heat pump unit 10; the water supply end of the preset heat pump unit 10 is connected to the first water supply end of the energy storage unit 1 through the water supply pipe, and the return water end of the preset heat pump unit 10 is connected to the first return water end of the energy storage unit 1 through the return water pipe.

[0072] The control end of the preset heat pump unit 10 is also communicatively connected to the controller 9 .

[0073] The WWHP unit can be a micro unit, that is, it can be a micro WWHP unit. If the heat pump unit 10 is preset as a WWHP unit, the condenser of the WWHP unit can be a water-cooled heat exchanger, which can absorb shallow ground energy through the buried pipe 11 using aqueous solution as a medium.

[0074] The buried pipe 11 can be buried at a preset depth from the ground, such as 1.5 m below the ground. The buried pipe 11 can collect shallow ground energy through heat exchange of aqueous solution. The buried pipe 11 is used to provide water source for the preset heat pump unit 10, which is easy to implement.

[0075] The water supply end of the preset heat pump unit 10 is connected to the first water supply end of the energy storage unit 1 through a water supply pipe, and the return water end of the preset heat pump unit 10 is connected to the first return water end of the energy storage unit 1 through a return water pipe. In this way, the energy storage unit 1 can realize the energy storage cycle of the preset heat pump unit 10.

[0076] The multi-source heat pump energy storage and supply system provided in this embodiment can be equipped with a preset heat pump unit using aqueous solution as the heat source and buried pipes on the basis of the above system, so as to realize the utilization of shallow geothermal energy. After the preset heat pump unit converts the shallow geothermal energy through aqueous solution, the energy storage unit stores energy, which can further ensure the energy supply demand after the energy supply area in multiple rooms and rooms requiring energy supply is increased.

[0077] The control end of the preset heat pump unit in the system is also communicatively connected to the controller, which can realize the control of the working mode of the multi-source heat pump energy storage function system, so that the multi-source heat pump energy storage function system can meet the corresponding diversified energy supply needs.

[0078] Optionally, the multi-source heat pump energy storage and supply system may further include: a water source buffer tank 12 , and two ends of the water source buffer tank 12 are respectively connected to two water pipe openings of the buried pipe 11 .

[0079] In the system, a water source buffer tank 12 is provided to buffer the water source carrying shallow geothermal energy from the buried pipe 11 and then transport it to the water source of the preset heat pump unit 10, thereby reducing the impact of direct transportation on the water source end of the preset heat pump unit 10 and ensuring the service life of the preset heat pump unit.

[0080] Optionally, based on the above system, the embodiment of the present application can also provide an implementation architecture of a multi-source heat pump energy storage and supply system. Figure 3 This is a schematic diagram of the structure of another multi-source heat pump energy storage and supply system provided in the embodiment of the present application. Figure 3 As shown, the system can further include: a solar heat collection device 13, the water supply end of the solar heat collection device 13 is connected to any water source end of the preset heat pump unit 10, and the return water end of the solar heat collection device 13 is also connected to a water pipe opening of the buried pipe 11. The control end of the solar heat collection device 13 is also connected to the controller 9 for communication.

[0081] The water source end of the preset heat pump unit 10 is connected to the water supply end of the solar thermal collector 13 to realize the absorption of low-level solar energy using the aqueous solution as a medium.

[0082] The solar thermal collector 13 may be provided with a temperature sensor to collect the heat collection temperature and transmit it to the controller 9, so that when the heat collection temperature is lower than the preset heat collection temperature, the controller 9 can output it to the preset heat pump unit 10, and the preset heat pump unit will increase the temperature and then output it to the energy storage unit 1 for energy storage. The heat collection temperature required by the solar thermal collector 13 is usually low, so it can be achieved by using old heat collection equipment or cheap low-temperature heat collection pipes mainly made of PE pipes placed on the roof of the building.

[0083] The solar heat collecting device 13 can provide water source to the preset heat pump unit 10 through the water source buffer tank 12, so as to provide it with a low-level heat source.

[0084] The system can also realize the comprehensive utilization of solar energy and geothermal energy. The water source buffer tank, the preset heat pump unit such as WWHP unit or DSHP unit and the energy storage unit can be used to recover the low-level solar energy below 30℃ that cannot be directly used.

[0085] Optionally, the water supply end of the solar thermal collector 13 can also be connected to the first water supply end of the energy storage unit 1 through a water supply pipe, and the return water end of the solar thermal collector 13 can also be connected to the first return water end of the energy storage unit 1 through a return water pipe.

[0086] When the heat collection temperature is greater than or equal to the preset heat collection temperature, the controller 9 can directly supply water to the energy storage unit 1 and receive return water from the energy storage unit 1 to realize the energy storage cycle of the energy storage unit 1 for solar energy.

[0087] Optionally, in order to facilitate the controller 9 to control the working mode of the solar thermal collector 13, the system may be provided with a first switching valve 14 on the water supply pipe between the water supply end of the solar thermal collector 13 and the first water supply end of the energy storage unit, and a second switching valve 15 on the water supply pipe between the water supply end of the solar thermal collector 13 and the second water source end of the preset heat pump unit 10. The first switching valve 14 and the second switching valve 15 are respectively connected to the controller 9 for communication.

[0088] The controller 9 can realize the control switching of the solar thermal collector 13 to the energy storage unit 1 and the preset heat pump unit 10 by controlling the on and off of the first switching valve 14 and the second switching valve 15. For example, the controller 9 can realize the energy storage control of the solar thermal collector 13 to the energy storage unit 1 by controlling the first switching valve 14 to be turned on and the second switching valve 15 to be turned off; the controller 9 can also realize the solar thermal collector 13 to provide low-level heat energy to the preset heat pump unit 10 by controlling the first switching valve 14 to be turned off and the second switching valve 15 to be turned on, so that the preset heat pump unit can improve the energy.

[0089] Optionally, based on the above system, the embodiment of the present application also provides other implementation methods of the multi-source heat pump energy storage and supply system. Figure 4 This is a schematic diagram of the structure of another multi-source heat pump energy storage and supply system provided in the embodiment of the present application. Figure 4 As shown, in the above system, the return pipe of the condenser heat exchange unit 4, the water supply pipe of the AWHP unit 5, the return pipe of each energy supply end, the water supply pipe of the preset heat pump unit 10, the water pipe at the first water source end of the preset heat pump unit 10, the water pipe corresponding to the second water source end in the buried pipe 11, and the water supply pipe of the solar thermal collection equipment 13 are respectively provided with a water pump 17.

[0090] The control end of the water pump 17 is in communication connection with the controller 9 .

[0091] Each water pump 17 can be a circulating water pump. The state of each water pump 17 can be controlled by the controller 9 to ensure the transmission of the aqueous solution in the water pipe and the energy storage and supply efficiency of the system.

[0092] The outdoor unit 2 of the AAHP unit, the AWHP unit 5, and the preset heat pump unit 10 may be provided with four-way reversing valves, respectively. The controller 9 may control the states of the four-way reversing valves to switch the working mode, i.e., the working condition, such as switching from the heating working condition to the cooling working condition, i.e., the summer working condition of the cold storage air conditioner. The energy storage unit 1 may be provided with a switching valve, and the controller 9 may switch the state of the switching valve inside the energy storage unit 1 to switch the working mode of the energy storage unit 1, such as switching between energy storage and energy supply, or switching between energy storage and energy storage and energy supply, or switching between energy supply and energy storage and energy supply.

[0093] Optionally, based on any of the above systems, the number of AAHP units can be one or more. If there are more than one, the indoor unit of each of the multiple AAHP units is arranged in a room to be powered. The condenser end of the outdoor unit of each AAHP unit is connected to the indoor unit of each AAHP unit arranged in a room to be powered;

[0094] The condenser end of the outdoor unit of each AAHP unit is respectively connected to the heating end of the condenser heat exchange unit.

[0095] Optionally, based on the above system, Figure 4 For example, the second water supply end of the energy storage unit 1 is connected to the main water supply pipe 18, and the main water supply pipe 18 is connected to a plurality of branch water supply pipes 181, and each branch water supply pipe 181 is respectively connected to the water supply end of at least one energy supply end.

[0096] The second water return end of the energy storage unit 1 is connected to the main water return pipe 19, and the main water return pipe 19 is connected to at least one branch water return pipe 191, and each branch water return pipe 191 is respectively connected to the water return end of at least one energy supply end.

[0097] Each energy supply terminal is connected to the energy storage unit 1 in the form of a main water pipe and a branch water pipe, so that flexible expansion and plug-and-play between the energy supply terminal and the energy storage unit 1 can be achieved.

[0098] In addition, the system provided in the embodiment of the present application can be centered on the energy storage unit, and through the integration of preset heat pump units, AWHP units, solar thermal collection equipment, AAHP units, and buried pipes, it can utilize air energy, shallow geothermal energy, solar energy, and various waste heat to achieve flexible expansion and plug-and-play of source-side equipment.

[0099] Based on any of the above-mentioned systems, the present application embodiment may also provide a system composed of the above-mentioned Figure 4 The control method executed by the controller in the system shown. Figure 5 This is a flow chart of a multi-source heat pump energy storage and supply control method provided in an embodiment of the present application. Figure 5 As shown, the method may include:

[0100] S501. Obtain outdoor temperature, historical electricity consumption data, and current time.

[0101] The historical electricity consumption data may include: historical electricity consumption data, and / or historical electricity price data, etc.

[0102] S502: Determine a target operation mode of the multi-source heat pump energy storage and supply system according to the outdoor temperature, the historical electricity consumption data and the current time.

[0103] The target operation mode is a heating operation mode or a cooling operation mode.

[0104] For example, the controller can determine the peak-valley time period from the preset time period based on the historical power consumption data in multiple power consumption time periods within the preset time period. The first time period in the peak-valley time period can be, for example, a time period when the power consumption is less than the preset power consumption, such as at night, or a time period when the power price data is less than or equal to the preset minimum power price. The second time period in the peak-valley time period can be, for example, a time period when the power consumption is greater than or equal to the preset power consumption, such as during the day, or a time period when the power price data is greater than the preset minimum power price.

[0105] The controller can also determine the target operation mode according to the target time period, the outdoor temperature, and the current time. Optionally, it can be determined whether the current time is in the heating time period or the cooling time period according to the outdoor temperature and the current time. If it is in the heating time period, the target operation mode is determined to be the heating operation mode; if it is in the cooling time period, the target operation mode is determined to be the cooling operation mode. For example, if the current time is a certain day in winter and the outdoor temperature is less than or equal to the first temperature value, it can be determined that the current time is in the cooling time period; if the current time is a certain day in summer, but the outdoor temperature is greater than or equal to the second temperature value, it can be determined that the current time is in the cooling time period.

[0106] Regardless of whether the target operating mode is the heating operating mode or the cooling operating mode, the controller also needs to determine that the current time is within the above-mentioned target time period. If it is still within the above-mentioned target time period, the target operating mode can be determined to be an energy supply mode with energy storage requirements. Conversely, if it is not yet within the above-mentioned target time period, the target operating mode can be determined to be an energy supply mode without energy storage requirements.

[0107] S503: Control the multi-source heat pump energy storage and supply system to operate in the target operation mode.

[0108] During the implementation process, the working states of the AAHP unit, condenser heat exchange unit, AWHP unit and energy storage unit in the multi-source heat pump energy storage supply system, as well as the on and off states of each water pump in the system can be controlled based on the target operating mode.

[0109] In one implementation, if the target operation mode is the first energy supply operation mode, then in S503, controlling the multi-source heat pump energy storage supply system to operate in the target operation mode may include:

[0110] Based on the first energy supply operation mode, the outdoor unit of the AAHP unit, the AWHP unit and the preset heat pump unit are controlled to work independently or jointly to store energy in the energy storage unit, and the circulating water pump of each room to be supplied is controlled to be turned on, and the energy storage unit supplies energy to each room to be supplied.

[0111] For example, if the first energy supply operation mode is the first heating operation mode, the first heating operation mode is: multi-source energy storage and simultaneous heat release heating mode. In the first heating operation mode, the controller can control the outdoor unit of the AAHP unit, the AWHP unit and the preset heat pump unit and other heat pump units to work independently or jointly to store energy in the energy storage unit. At the same time, by controlling the circulation water pumps in different rooms to start, the energy storage unit 1 flexibly heats each room without mutual interference between the devices.

[0112] If the first energy supply operation mode is the first cooling operation mode, the first cooling operation mode is multi-source cold storage and simultaneous cold release for air conditioning. In the first cooling operation mode, the controller can control the outdoor unit of the AAHP unit, the AWHP unit and the heat pump units such as the preset heat pump unit to work independently or jointly to store energy in the energy storage unit. At the same time, by controlling the circulation water pumps in different rooms to start, the energy storage unit 1 flexibly supplies cooling to each room, and there is no mutual interference between the devices.

[0113] In another implementation, if the target operation mode is the second energy supply operation mode, then in S503, controlling the multi-source heat pump energy storage supply system to operate in the target operation mode may include:

[0114] Based on the second energy supply operation mode, all power-consuming units in the multi-source heat pump energy storage supply system are controlled to be shut down, and the circulating water pump of each room to be supplied is controlled to be turned on, and the energy storage unit supplies energy to each room to be supplied.

[0115] For example, if the second energy supply operation mode is the second heating operation mode, the second heating operation mode is: the energy storage unit releases heat for heating alone. In the second heating operation mode, during the peak power period, i.e., the second time period, the controller can control all power-consuming heat pump units to shut down, and only control the energy storage unit 1 to flexibly heat each room.

[0116] If the second energy supply operation mode is the second cooling operation mode, the second cooling operation mode may be: the energy storage unit alone releases cold air for air conditioning. In the second cooling operation mode, during the peak power period, i.e., the second time period, the controller may control all power-consuming heat pump units to shut down, and only control the energy storage unit 1 to flexibly provide cooling to each room.

[0117] In another implementation, if the target operation mode is the third energy supply operation mode, then in S503, controlling the multi-source heat pump energy storage supply system to operate in the target operation mode may include:

[0118] Based on the third energy supply operation mode, the indoor unit of the AAHP unit is controlled to supply energy to the room to be powered where the indoor unit of the AAHP unit is located, and the outdoor unit of the AAHP unit is controlled to store energy in the heat exchange unit.

[0119] For example, if the third energy supply operation mode is the third heating operation mode, the third heating operation mode is: the heat pump hot air machine directly heats and stores energy. In the third heating operation mode, the controller can control the heat pump hot air machine, that is, the above-mentioned AAHP unit to directly heat the room through the indoor unit 3 according to the original heating method. While heating, the parallel heat exchange unit 4 can also store energy.

[0120] If the third energy supply operation mode is the third cooling operation mode, the third cooling operation mode is: the heat pump hot air machine directly supplies air conditioning. In the third cooling operation mode, the controller can control the heat pump hot air machine, that is, the above-mentioned AAHP unit to directly supply cooling to the room through the indoor unit 3 according to the original cooling method. While supplying cooling, the parallel heat exchange unit 4 can also store energy.

[0121] In another implementation, if the target operation mode is the fourth energy supply operation mode, then in S503, controlling the multi-source heat pump energy storage supply system to operate in the target operation mode may include:

[0122] Based on the fourth energy supply operation mode, the water pump between the buried pipe and the water source buffer tank, and the water pump between the solar thermal collector and the preset heat pump unit are controlled to be turned on, so that the water source buffer tank collects the first shallow geothermal energy collected by the buried pipe and the low-level solar energy collected by the solar thermal collector; and the preset heat pump unit is controlled to operate to increase the low-level thermal energy and store the heat in the energy storage unit, wherein the low-level thermal energy includes: the first shallow geothermal energy and / or the low-level solar energy; or,

[0123] Based on the fourth energy supply operation mode, the switching valve between the solar thermal collection equipment and the preset heat pump unit, as well as the switching valve between the preset heat pump unit and the energy storage unit are controlled to be closed, the water pump between the buried pipe and the water source buffer tank is controlled to be opened, so that the water source buffer tank collects the second shallow geothermal energy collected by the buried pipe, and the preset heat pump unit is controlled to operate, so as to lift the second shallow geothermal energy and store the cold energy in the energy storage unit.

[0124] For example, if the fourth energy supply operation mode is the fourth heating operation mode, the fourth heating operation mode is: low-level thermal energy collection. In the fourth heating operation mode, the controller can control the water pump between the buried pipe and the water source buffer tank, and the water pump between the solar thermal collector and the preset heat pump unit to open, so that the water source buffer tank collects the first shallow geothermal energy collected by the buried pipe and the low-level solar energy collected by the solar thermal collector. Waste heat, etc., can also be controlled to operate the preset heat pump unit to increase the low-level thermal energy and store the heat in the energy storage unit. Among them, low-level thermal energy includes: first shallow geothermal energy and / or low-level solar energy.

[0125] If the fourth energy supply operation mode is the fourth cooling operation mode, the fourth cooling operation mode is: low-level energy collection. In the fourth cooling operation mode, the controller can control the switching valve between the solar thermal collector and the preset heat pump unit, and the switching valve between the preset heat pump unit and the energy storage unit to close; by controlling the water pump between the buried pipe and the water source buffer tank to open, the water source buffer tank collects the second shallow geothermal energy collected by the buried pipe, and at the same time, the preset heat pump unit can be controlled to operate, so as to increase the low-level energy, that is, the second shallow geothermal energy, and store the cold in the energy storage unit.

[0126] In another implementation, if the target operation mode is the fifth energy supply operation mode, then in S503, controlling the multi-source heat pump energy storage supply system to operate in the target operation mode may include:

[0127] Based on the fifth energy supply operation mode, the switching valve between the solar thermal collection device and the preset heat pump unit is controlled to be closed, while the switching valve between the solar thermal collection device and the energy storage unit is opened, so that the solar thermal collection device can store heat.

[0128] For example, if the fifth energy supply operation mode is the fifth heating operation mode, the fifth heating operation mode is: low-level heat energy collection. In the fifth heating operation mode, the controller controls the solar thermal collector to directly store heat, that is, the switching valve between the solar thermal collector and the preset heat pump unit is closed, and the switching valve between the solar thermal collector and the energy storage unit is opened. For example, when the controller determines that the heat collection temperature of the solar thermal collector is greater than or equal to the preset heat collection temperature, the controller directly supplies energy to the energy storage unit for storage.

[0129] This application integrates the advantages of energy storage technology and heat pump unit technology. By transforming the AAHP unit, i.e., heat pump hot air blower, of clean heating users in the northern region, and simultaneously connecting to a variety of heat pump heat sources in the form of AWHP units, WWHP units, or DSHP units, as well as solar thermal collection equipment, and adding energy supply terminals, users can achieve multi-source heat pump heating, meet the different heating needs of multiple rooms of users, and improve the heating quality of clean heating users.

[0130] In addition, the multi-source heat pump energy storage supply system can make full use of the peak-valley electricity price difference by adding an energy storage unit through the control of the controller. It can store heat through the energy storage circulation unit during the valley period at night and release heat during the peak electricity consumption period during the day. While ensuring the heating needs of users, it can effectively reduce the operating costs of the heating system and reduce the burden of heating for farmers in winter.

[0131] The multi-source heat pump energy storage supply system provided in the embodiment of the present application can also meet the requirements of the energy storage air conditioning operation condition in summer, that is, the cooling operation mode, thereby improving the user's air conditioning comfort effect in summer and reducing the operating costs. According to calculations, under normal peak and valley electricity prices, the comprehensive operating costs can be equivalent to or lower than those of coal-fired power generation, which can reduce dependence on subsidy policies, and achieve sustainable and clean heating while ensuring heating quality.

[0132] In addition, based on the control method of the multi-source heat pump energy storage system, a system integration and control method can achieve the best match between energy production and demand of household heating and air conditioning systems. With the energy storage unit as the heat energy storage and transfer center, each cold and heat source production equipment can be input at any time, and each room cooling and heating equipment can be output at any time.

[0133] The following describes the devices, equipment, storage media, etc. used to execute the multi-source heat pump energy storage and supply control method provided in the present application. The specific implementation process and technical effects are described above and will not be repeated below.

[0134] Figure 6 This is a schematic diagram of a multi-source heat pump energy storage and supply control device provided in an embodiment of the present application. The multi-source heat pump energy storage and supply control method device can be integrated on a controller or a controller chip by software and / or hardware. Figure 6 As shown, the multi-source heat pump energy storage and supply control method device 600 may include:

[0135] The acquisition module 601 is used to acquire the outdoor temperature, historical power consumption data and the current time.

[0136] The determination module 602 is used to determine the target operation mode of the multi-source heat pump energy storage supply system according to the outdoor temperature, the electricity consumption data and the current time.

[0137] The control module 603 is used to control the multi-source heat pump energy storage and supply system to operate in the target operation mode.

[0138] Optionally, if the target operating mode is the first energy supply operating mode, the control module 603 is specifically used to control the outdoor unit of the AAHP unit, the AWHP unit and the preset heat pump unit to work independently or jointly based on the first energy supply operating mode to store energy in the energy storage unit, and control the circulation water pump of each room to be supplied to start, so that the energy storage unit supplies energy to each room to be supplied.

[0139] Optionally, if the target operating mode is the second energy supply operating mode, the control module 603 is specifically used to control all power-consuming units in the multi-source heat pump energy storage supply system to shut down based on the second energy supply operating mode, and control the circulating water pump of each room to be supplied to start, and the energy storage unit supplies energy to each room to be supplied.

[0140] Optionally, if the target operating mode is the third energy supply operating mode, the control module 603 is specifically used to control the indoor unit of the AAHP unit to supply energy to the room to be powered where the indoor unit of the AAHP unit is located, and control the outdoor unit of the AAHP unit to store energy in the heat exchange unit based on the third energy supply operating mode.

[0141] Optionally, if the target operating mode is the fourth energy supply operating mode, the control module 603 is specifically used to control the water pump between the buried pipe and the water source buffer tank, and the water pump between the solar thermal collection equipment and the preset heat pump unit based on the fourth energy supply operating mode, so that the water source buffer tank collects the first shallow geothermal energy collected by the buried pipe and the low-level solar energy collected by the solar thermal collection equipment, and controls the preset heat pump unit to operate, so as to boost the low-level thermal energy and store the energy in the energy storage unit, wherein the low-level thermal energy includes: the first shallow geothermal energy and / or low-level solar energy.

[0142] Alternatively, it is specifically used to control the switching valve between the solar thermal collection equipment and the preset heat pump unit, and the switching valve between the preset heat pump unit and the energy storage unit to close based on the fourth energy supply operation mode, control the water pump between the buried pipe and the water source buffer tank to open, so that the water source buffer tank collects the second shallow geothermal energy collected by the buried pipe, and control the operation of the preset heat pump unit to lift the second shallow geothermal energy and store the cold energy in the energy storage unit.

[0143] Optionally, if the target operating mode is the fifth energy supply operating mode, the control module 603 is specifically used to control the switching valve between the solar thermal collection equipment and the preset heat pump unit to close, and the switching valve between the solar thermal collection equipment and the energy storage unit to open, based on the fifth energy supply operating mode, so that the solar thermal collection equipment can store heat.

[0144] The above-mentioned device can also execute other method steps performed by the controller provided in the above-mentioned embodiment. The implementation principles and technical effects are similar and will not be repeated here.

[0145] The above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASIC), or one or more digital singnal processors (DSP), or one or more field programmable gate arrays (FPGA). For another example, when a module is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0146] Figure 7 This is a schematic diagram of the structure of a controller provided in an embodiment of the present application. The controller 700 includes: a memory 701 and a processor 702. The memory 701 and the processor 702 are connected via a bus.

[0147] The memory 701 is used to store programs, and the processor 702 calls the programs stored in the memory 701 to execute the above method embodiment. The specific implementation method and technical effect are similar and will not be repeated here.

[0148] Optionally, the present application also provides a program product, such as a computer-readable storage medium, including a program, which is used to execute the above method embodiment when executed by a processor.

[0149] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0150] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0151] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0152] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, abbreviated: ROM), random access memory (English: Random Access Memory, abbreviated: RAM), disk or optical disk and other media that can store program codes.

[0153] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A multi-source heat pump energy storage and supply system, characterized in that: include: Energy storage unit, AAHP unit, condenser heat exchange unit, AWHP unit, at least one energy supply terminal, and a controller; wherein each energy supply terminal is arranged in a room to be supplied with energy; wherein the AAHP unit is an air-to-air heat pump unit, and the AWHP unit is an air-to-water heat pump; The condenser end of the outdoor unit of the AAHP unit is connected to the indoor unit of the AAHP unit arranged in a room to be powered, and the condenser end of the outdoor unit of the AAHP unit is also connected to the heating end of the condenser heat exchange unit; The water supply end of the condenser heat exchange unit and the water supply end of the AWHP unit are respectively connected to the first water supply end of the energy storage unit through a water supply pipe, and the first water return end of the energy storage unit is also connected to the return water end of the condenser heat exchange unit and the return water end of the AWHP unit through a return water pipe; The second water supply end of the energy storage unit is connected to the water supply end of the at least one energy supply end through a water supply pipe, and the return water end of the at least one energy supply end is connected to the second return water end of the energy storage unit through a return water pipe; The control end of the AAHP unit, the control end of the hydrocondenser heat exchange unit, the control end of the AWHP unit and the control end of the energy storage unit are respectively connected to the controller for controlling the working modes of the AAHP unit, the hydrocondenser heat exchange unit, the AWHP unit and the energy storage unit; The system further comprises: a preset heat pump unit, an underground pipe, a water source buffer tank and a solar thermal collector, wherein the control end of the preset heat pump unit and the control end of the solar thermal collector are also respectively connected to the controller in communication, and the water pipe at the first water source end of the preset heat pump unit, the water pipe corresponding to the second water source end in the underground pipe, and the water supply pipe of the solar thermal collector are respectively provided with a water pump; the control end of the water pump is connected to the controller in communication; a switching valve is provided between the solar thermal collector and the preset heat pump unit, and a switching valve is provided between the preset heat pump unit and the energy storage unit, which are respectively connected to the controller in communication; The controller is used to control the water pump between the buried pipe and the water source buffer tank, and the water pump between the solar thermal collector and the preset heat pump unit to open, so that the water source buffer tank collects the first shallow geothermal energy collected by the buried pipe and the low-level solar energy collected by the solar thermal collector, and controls the preset heat pump unit to operate, so as to increase the low-level thermal energy and store the heat in the energy storage unit, wherein the low-level thermal energy includes: the first shallow geothermal energy and / or the low-level solar energy; or, Control the switching valve between the solar thermal collection equipment and the preset heat pump unit, and the switching valve between the preset heat pump unit and the energy storage unit to close, control the water pump between the buried pipe and the water source buffer tank to open, so that the water source buffer tank collects the second shallow geothermal energy collected by the buried pipe, and control the operation of the preset heat pump unit to lift the second shallow geothermal energy and store the cold energy in the energy storage unit.

2. The system according to claim 1, characterized in that The preset heat pump unit is a WWHP unit or a DSHP unit; wherein the WWHP unit is a water-to-water heat pump unit, and the DSHP unit is a dual-source heat pump unit; The two water pipe outlets of the buried pipe are respectively connected to the two water source ends of the preset heat pump unit; the water supply end of the preset heat pump unit is connected to the first water supply end of the energy storage unit through a water supply pipe, and the return water end of the preset heat pump unit is connected to the first return water end of the energy storage unit through a return water pipe.

3. The system according to claim 2, characterized in that The two ends of the water source buffer tank are respectively connected to the two water pipe openings of the buried pipe.

4. The system according to claim 2, characterized in that The water supply end of the solar thermal collector is connected to any water source end of the preset heat pump unit, and the water return end of the solar thermal collector is also connected to a water pipe opening of the buried pipe.

5. The system according to claim 4, characterized in that The water supply end of the solar thermal collector is also connected to the first water supply end of the energy storage unit through a water supply pipe, and the water return end of the solar thermal collector is also connected to the first water return end of the energy storage unit through a water return pipe.

6. The system according to claim 5, characterized in that The return pipe of the hydrocondenser heat exchange unit, the water supply pipe of the AWHP unit, and the return pipe of each energy supply terminal are respectively provided with a water pump; The control end of the water pump is in communication connection with the controller.

7. The system according to claim 4, characterized in that A first switching valve is provided on the water supply pipe between the water supply end of the solar thermal collection equipment and the first water supply end of the energy storage unit, and a second switching valve is provided on the water supply pipe between the water supply end of the solar thermal collection equipment and the second water source end of the preset heat pump unit; the first switching valve and the second switching valve are respectively communicated and connected to the controller.

8. The system according to claim 1, characterized in that The number of the AAHP units is at least one, and the indoor unit of each AAHP unit in the at least one AAHP unit is arranged in a room to be powered; The condenser end of the outdoor unit of each AAHP unit is connected to the indoor unit of each AAHP unit arranged in a room to be powered; The condenser end of the outdoor unit of each AAHP unit is respectively connected to the heating end of the condenser heat exchange unit.

9. The system according to claim 1, characterized in that The second water supply end of the energy storage unit is connected to the main water supply pipe, and the main water supply pipe is connected to at least one branch water supply pipe, and each branch water supply pipe is respectively connected to the water supply end of the at least one energy supply end; The second water return end of the energy storage unit is connected to the main water return pipe, and the main water return pipe is connected to at least one branch water return pipe, and each branch water return pipe is respectively connected to the water return end of the at least one energy supply end.

10. The system according to any one of claims 1 to 9, characterized in that: Each energy supply terminal is: a horizontal fan coil terminal, a vertical fan coil terminal, or a radiant heating terminal.

11. A method for controlling energy storage and supply, characterized in that: Applied to the multi-source heat pump energy storage and supply system according to claim 6 above, the method is executed by a controller in the multi-source heat pump energy storage and supply system, and the method comprises: Get outdoor temperature, historical electricity consumption data, and current time; Determine the target operation mode of the multi-source heat pump energy storage and supply system according to the outdoor temperature, the power consumption data and the current time; the target operation mode is a heating operation mode or a cooling operation mode; Controlling the multi-source heat pump energy storage and supply system to operate under the target operation mode; If the target operation mode is the fourth energy supply operation mode, controlling the multi-source heat pump energy storage and supply system to operate in the target operation mode includes: Based on the fourth energy supply operation mode, the water pump between the buried pipe and the water source buffer tank, and the water pump between the solar thermal collector and the preset heat pump unit are controlled to be turned on, so that the water source buffer tank collects the first shallow geothermal energy collected by the buried pipe and the low-level solar energy collected by the solar thermal collector, and controls the preset heat pump unit to operate, so as to increase the low-level thermal energy and store the heat in the energy storage unit, wherein the low-level thermal energy includes: the first shallow geothermal energy and / or the low-level solar energy; or Based on the fourth energy supply operation mode, the switching valve between the solar thermal collection equipment and the preset heat pump unit, and the switching valve between the preset heat pump unit and the energy storage unit are controlled to be closed, and the water pump between the buried pipe and the water source buffer tank is controlled to be opened, so that the water source buffer tank collects the second shallow geothermal energy collected by the buried pipe, and the preset heat pump unit is controlled to operate, so as to lift the second shallow geothermal energy and store the cold energy in the energy storage unit.

12. The method according to claim 11, characterized in that If the target operation mode is the first energy supply operation mode, controlling the multi-source heat pump energy storage and supply system to operate in the target operation mode includes: Based on the first energy supply operation mode, the outdoor unit of the AAHP unit, the AWHP unit and the preset heat pump unit are controlled to work independently or jointly to store energy in the energy storage unit, and the circulating water pump of each room to be supplied is controlled to be turned on, and the energy storage unit supplies energy to each room to be supplied.

13. The method according to claim 11, characterized in that If the target operation mode is the second energy supply operation mode, controlling the multi-source heat pump energy storage and supply system to operate in the target operation mode includes: Based on the second energy supply operation mode, all power-consuming units in the multi-source heat pump energy storage supply system are controlled to be shut down, and the circulating water pump of each room to be supplied is controlled to be turned on, and the energy storage unit supplies energy to each room to be supplied.

14. The method according to claim 11, characterized in that If the target operation mode is the third energy supply operation mode, controlling the multi-source heat pump energy storage and supply system to operate in the target operation mode includes: Based on the third energy supply operation mode, the indoor unit of the AAHP unit is controlled to supply energy to the room to be powered where the indoor unit of the AAHP unit is located, and the outdoor unit of the AAHP unit is controlled to store energy in the heat exchange unit.

15. The method according to claim 11, characterized in that If the target operation mode is the fifth energy supply operation mode, controlling the multi-source heat pump energy storage and supply system to operate in the target operation mode includes: Based on the fifth energy supply operation mode, the switching valve between the solar thermal collection device and the preset heat pump unit is controlled to be closed, while the switching valve between the solar thermal collection device and the energy storage unit is opened, so that the solar thermal collection device can store heat.

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