A cross-season energy storage and supply system

Abstract

The present invention discloses an inter-seasonal energy storage and supply system, comprising a new energy generator set module, a first heat pump set module, a second heat pump set module, a medium cold storage module, a medium heat storage module and a control module; the new energy generator set module is electrically connected to the first heat pump set module, the second heat pump set module and a power grid end through the control module, the first heat pump set module is connected to the medium heat storage module through a pipeline, and the second heat pump set module is connected to the medium cold storage module through a pipeline; the present invention utilizes the energy storage module to efficiently store energy by utilizing the unstable energy of wind power and photovoltaic power by utilizing the heat pump set to store cold in winter and store heat in summer, and then through inter-seasonal energy storage, the cold energy stored in winter is used for cooling in summer, and the heat energy stored in summer is used for heating in winter, thereby realizing a stable and efficient energy supply of wind power and photovoltaic power stations.

Description

Technical Field

[0001] The present invention relates to the field of energy technology, and in particular to a cross-seasonal energy storage and supply system. Background Art

[0002] Under the requirements of zero-carbon development, new energy sources such as wind power and photovoltaics will become the main source of power supply, and traditional coal-fired cogeneration units will serve as a guarantee and backup for power supply. However, the power generation characteristics of wind power and photovoltaics are closely related to the environment: photovoltaic power stations cannot supply power normally at night, and the daily power generation in winter is half of the daily power generation in summer due to the short sunshine time; the wind power load also fluctuates greatly with the weather. The load fluctuation on the power supply side of the power grid dominated by new energy sources such as wind power and photovoltaics is large, while the power load on the power consumption side of the power grid is not much different in winter and summer. In order to meet the stable supply of power load of the power grid throughout the year, the capacity of wind power and photovoltaics should be determined according to the season of low power generation load of the power station, and the load fluctuation caused by environmental impact should be considered. Therefore, the capacity of wind power, photovoltaics and other power stations is greater than the stable power load of the power grid. When this part of the power generation capacity reaches the high-load season of the unit, there will be a more obvious overload.

[0003] How to solve the problems of wind and solar power abandonment caused by power generation load fluctuations due to environmental changes and excessive power generation load, transform the unstable power generation load of wind power and photovoltaics into a stable energy supply, and at the same time replace traditional thermal power units to undertake the cooling, heating and electricity needs of urban residents' lives and industrial production processes, is an urgent problem to be solved in the development of new energy such as wind power and photovoltaics. Summary of the invention

[0004] The purpose of the present invention is to provide a cross-seasonal energy storage and supply system to solve the technical problem in the prior art that there is a lack of efficient storage of cold energy in winter and efficient cooling in summer from new energy sources such as photovoltaics and wind power; efficient storage of heat energy in summer and efficient heating in winter, so as to realize an efficient and stable energy supply system for cold, heat and electricity of wind power and photovoltaic energy stations.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0006] A cross-seasonal energy storage and supply system, comprising a new energy generator module, a first heat pump module, a second heat pump module, a medium cold storage module, a medium heat storage module and a control module;

[0007] The new energy generator module is electrically connected to the first heat pump module, the second heat pump module and the power grid through the control module, the first heat pump module is connected to the medium heat storage module through a pipeline, and the second heat pump module is connected to the medium cold storage module through a pipeline;

[0008] Wherein, the control module is used to directly input the electric energy generated by the new energy generator module into the power grid end;

[0009] When the ambient temperature is higher than the set temperature, the control module controls the new energy generator module to supply power to drive the first heat pump module to generate hot water, and the hot water enters the medium heat storage module for energy storage. When the ambient temperature is lower than the set temperature, the hot water is supplied to users connected to the first heat pump module through pipelines.

[0010] When the ambient temperature is lower than the set temperature, the control module controls the new energy generator module to supply power to drive the second heat pump unit module to produce cold water. The cold water enters the medium cold storage module for energy storage. When the ambient temperature is higher than the set temperature, the cold water is supplied to users connected to the second heat pump unit module through pipelines.

[0011] As a preferred solution of the present invention, a power storage module is provided between the new energy generator module and the control module, and the power storage module is used to store electric energy when the control module is used to directly input the electric energy generated by the new energy generator module into the power grid end to generate power generation load;

[0012] The power storage module is used to release electric energy to the power grid when the electric energy generated by the new energy generator module cannot meet the load of the power grid.

[0013] As a preferred solution of the present invention, the medium cold storage module and the medium heat storage module have the same structure;

[0014] The medium heat storage module comprises a medium storage cavity, a first pipe and a second pipe, one end of the first pipe and the second pipe are connected to the medium storage cavity, and the other end of the first pipe and the second pipe are connected to the first heat pump unit module;

[0015] The first heat pump unit module, the first pipeline, the medium storage cavity and the second pipeline form a closed loop for medium flow.

[0016] As a preferred solution of the present invention, the end of the first pipe connected to the medium storage cavity is located in the upper middle part of the medium storage cavity; the end of the second pipe connected to the medium storage cavity is located at the lower part of the medium storage cavity.

[0017] As a preferred solution of the present invention, two layers of horizontal partition plates are arranged inside the medium storage cavity, and the two layers of horizontal partition plates divide the medium storage cavity into an upper cavity, a middle cavity and a lower cavity;

[0018] The ends of the first pipeline and the second pipeline away from the first heat pump unit module are both provided with branch pipelines connected to the upper cavity, the middle cavity and the lower cavity at the same time;

[0019] Wherein, a lifting and adjusting component is arranged at the bottom of the horizontal dividing plate, and the lifting and adjusting component is used to adjust the height position of the horizontal dividing plate inside the medium storage cavity.

[0020] As a preferred solution of the present invention, the first pipeline is connected to the branch pipeline through a telescopic pipeline, a lifting device is connected to the first pipeline, an output end of the lifting device is connected to the branch pipeline, the lifting device is used to drive the displacement of the branch pipeline in the height direction of the medium storage cavity, and the telescopic pipeline is used to extend and contract in coordination with the position change of the branch pipeline.

[0021] The present invention provides a cross-seasonal energy storage and supply method, which is used to implement the cross-seasonal energy storage and supply system, comprising:

[0022] Determine system control parameters based on seasonal changes and the power load of the new energy generator module;

[0023] The control module switches the energy supply mode of the inter-seasonal energy storage and supply system according to the system control parameters, and the energy supply mode specifically includes:

[0024] In the power supply mode, the new energy generator module directly connects the generated electricity to the power grid;

[0025] In the power storage mode, the new energy generator module sends the electric load that exceeds the power demand of the grid to the power storage module for storage;

[0026] When the power generation load of the new energy generator module cannot meet the load requirement of the power grid, the power storage module supplies power to the power grid;

[0027] When the power generation load of the new energy generator module exceeds the load requirement of the grid, according to the seasonal environment:

[0028] Driving the first heat pump unit module and the medium heat storage module to work in a heat storage mode;

[0029] Or, drive the second heat pump unit module and the medium cold storage module to work in the cold storage mode.

[0030] As a preferred embodiment of the present invention,

[0031] The seasonal environment is summer:

[0032] The new energy generator module supplies power to drive the first heat pump module to generate hot water, and the hot water enters the medium heat storage module for energy storage; in winter, heat is supplied to users connected to the first heat pump module through pipelines;

[0033] The seasonal environment is winter:

[0034] The new energy generator module supplies power to drive the second heat pump module to generate cold water, and the cold water enters the medium cold storage module for energy storage;

[0035] In summer, cooling is provided to users connected to the second heat pump unit module through pipelines.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The present invention utilizes energy storage modules to efficiently store unstable energy from wind power and photovoltaic power by utilizing heat pump units to store cold in winter and heat in summer. Then, through cross-season energy storage, the cold energy stored in winter is used for cooling in summer, and the heat energy stored in summer is used for heating in winter, thereby achieving stable and efficient energy supply for wind power and photovoltaic power stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0039] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0040] Figure 2 It is a schematic structural diagram of a medium heat storage module or a medium cold storage module according to an embodiment of the present invention.

[0041] The numbers in the figure represent the following:

[0042] 1-new energy generator module; 2-first heat pump module; 3-second heat pump module; 4-medium cold storage module; 5-medium heat storage module; 6-control module; 7-electricity storage module; 8-lifting and adjusting component; 9-lifting device;

[0043] 51 - medium storage cavity; 52 - first pipeline; 53 - second pipeline; 54 - horizontal partition plate; 55 - upper cavity; 56 - middle cavity; 57 - lower cavity; 58 - branch pipeline; 59 - telescopic pipeline. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figure 1 As shown, the present invention provides a cross-seasonal energy storage and supply system, including a new energy generator module 1, a first heat pump module 2, a second heat pump module 3, a medium cold storage module 4, a medium heat storage module 5 and a control module 6;

[0046] The new energy generator module 1 is electrically connected to the first heat pump module 2, the second heat pump module 3 and the power grid through the control module 6; the first heat pump module 2 is connected to the medium heat storage module 5 through a pipeline; and the second heat pump module 3 is connected to the medium cold storage module 4 through a pipeline;

[0047] Among them, the control module 6 is used to directly input the electric energy generated by the new energy generator module 1 into the power grid;

[0048] When the ambient temperature is higher than the set temperature, the control module 6 controls the new energy generator module 1 to supply power to drive the first heat pump module 2 to generate hot water, and the hot water enters the medium heat storage module 5 for energy storage. When the ambient temperature is lower than the set temperature, the hot water is supplied to the user connected to the first heat pump module 2 through the pipeline;

[0049] When the ambient temperature is lower than the set temperature, the control module 6 controls the new energy generator module 1 to supply power to drive the second heat pump unit module 3 to produce cold water. The cold water enters the medium cold storage module 4 for energy storage. When the ambient temperature is higher than the set temperature, the cold water is supplied to the user connected to the second heat pump unit module 3 through the pipeline.

[0050] An electric storage module 7 is provided between the new energy generator module 1 and the control module 6, and the electric storage module 7 is used to store electric energy when the control module 6 is used to directly input the electric energy generated by the new energy generator module 7 into the power grid to generate a power generation load;

[0051] The power storage module 7 is used to release electric energy to the grid when the electric energy generated by the new energy generator module 1 cannot meet the load of the grid.

[0052] like Figure 2 As shown, the medium cold storage module 4 and the medium heat storage module 5 have the same structure;

[0053] The medium heat storage module 5 includes a medium storage cavity 51, a first pipe 52 and a second pipe 53, one end of the first pipe 52 and the second pipe 53 are connected to the medium storage cavity 51, and the other end of the first pipe 52 and the second pipe 53 are connected to the first heat pump unit module 2;

[0054] The first heat pump unit module 2, the first pipeline 52, the medium storage chamber 51 and the second pipeline 53 form a closed loop for the flow of the medium.

[0055] The end of the first pipe 52 connected to the medium storage cavity 51 is located in the upper middle part of the medium storage cavity 51 ; the end of the second pipe 53 connected to the medium storage cavity 51 is located at the lower part of the medium storage cavity 51 .

[0056] Two layers of horizontal partition plates 54 are arranged inside the medium storage cavity 51, and the two layers of horizontal partition plates 54 divide the medium storage cavity 51 into an upper cavity 55, a middle cavity 56 and a lower cavity 57;

[0057] The ends of the first pipe 52 and the second pipe 53 away from the first heat pump unit module 2 are both provided with branch pipes 58 that are connected to the upper cavity 55, the middle cavity 56 and the lower cavity 57 at the same time;

[0058] A lifting and adjusting component 8 is disposed at the bottom of the horizontal dividing plate 54 , and the lifting and adjusting component 8 is used to adjust the height position of the horizontal dividing plate 54 inside the medium storage cavity 51 .

[0059] Furthermore, since both the medium heat storage module and the medium cold storage module will cause a certain temperature gradient in the height direction of the medium storage cavity 51 due to energy loss when storing energy, if energy storage and heat exchange are performed by directly extending the first pipe 52 and the second pipe 53 into the medium storage cavity 51, when the volume of the medium storage cavity 51 is large, the energy storage efficiency becomes poor. Since energy loss in energy storage is inevitable, the present invention can reduce the rate of energy loss by setting the upper cavity 55, the middle cavity 56 and the lower cavity 57, and in the process of energy storage, a higher energy storage efficiency can be obtained by independently storing energy in each cavity.

[0060] Then the first pipe 52 provided in the present invention is connected to the branch pipe 58 through the telescopic pipe 59. The first pipe 52 is connected to a lifting device 9. The output end of the lifting device 9 is connected to the branch pipe 58. The lifting device 9 is used to drive the displacement of the branch pipe 58 in the height direction of the medium storage cavity 51. The telescopic pipe 59 is used to extend and contract in coordination with the position change of the branch pipe 58.

[0061] That is to say, the present invention realizes the extraction of water at different heights (ie, temperature gradient) in the medium storage chamber 51 by adjusting the position of the branch pipe 58 .

[0062] The inter-seasonal energy storage and supply system of the present invention specifically realizes the heat storage heating mode and the cold storage cooling mode (the working part of the medium heat storage module or the medium cold storage module):

[0063] Heat storage heating mode (the medium heat storage module is working, and the heat pump unit is the first heat pump unit module at this time): When the temperature is high in summer, the control module starts the water pump arranged on the second pipe 53 to extract the lower temperature water in the medium storage cavity 51 through the branch pipe at the end of the second pipe 53, and uses the heat therein to produce higher temperature hot water through the first heat pump unit module 2 driven by wind power and photovoltaic power (new energy generator module 1). The hot water is transported to the medium storage cavity 51 through the water pump on the first pipe 52 and the branch pipe at the end of the first pipe 52. As the temperature of the hot water stored in the middle cavity 56 gradually increases, the telescopic pipe on the first pipe 52 gradually extends and the branch pipe descends.

[0064] When the water temperature of the middle chamber 56 of the medium storage chamber 51 approaches or reaches the hot water temperature at the heat pump outlet, the horizontal partition channel is opened to mix the water between the layers and partitions in the medium storage chamber 51, and continue to store heat through the heat pump unit, so that the overall temperature reaches a balanced maximum temperature, and then the channels of the layers and partitions are closed to complete summer heat storage.

[0065] When the temperature is low in winter, the water pump on the first pipe 52 in the medium storage chamber 51 is started to extract the hot water in the middle chamber 56 of the medium storage chamber 51, and lead it to the heat pump unit through the first pipe 52 for heating, and then supply heat to the heat user end through the pipe. The water that has completed the heat exchange is led to the lower chamber 57 of the medium storage chamber 51 through the second pipe 53.

[0066] As the temperature gradually decreases, the water pumping position of the first pipe 52 gradually moves from the deeper edge position of the medium storage cavity 51 to the center of the middle cavity 56, completing the cross-season heat storage and heating of the medium storage cavity 51.

[0067] Cold storage and cooling mode (the medium cold storage module is working, and the heat pump unit is the second heat pump unit module at this time): When the temperature is low in winter, the water pump on the first pipe 52 of the medium storage cavity 51 will extract the higher temperature water in the middle cavity 56 of the medium storage cavity 51 through the branch pipe at the end of the first pipe 52, and use the heat therein to produce lower temperature cold water through the heat pump driven by wind power and photovoltaic power (new energy generator module 1). The cold water is pumped and stored in the medium storage cavity 51 by the water pump arranged on the second pipe 53. As the temperature of the cold water stored in the middle cavity 56 gradually decreases, the telescopic pipe gradually extends, and the branch pipe at the end of the first pipe 52 moves downward.

[0068] When the water temperature of the middle cavity 56 of the medium storage cavity 51 approaches or reaches the cold water temperature at the outlet of the heat pump unit, the channel set on the horizontal dividing plate 54 is opened, and the water between the various layers and partitions (upper cavity, middle cavity and lower cavity) in the medium storage cavity 51 is mixed, and the heat pump unit continues to store cold, so that the overall temperature of the medium storage cavity 51 reaches a balanced minimum temperature, and then the channels of each layer and partition are closed.

[0069] Complete winter cold storage. When the temperature is high in summer, start the water pump of the second pipe 53 in the medium storage chamber 51 to pump out the cold water in the lower chamber 57 of the medium storage chamber 51, and lead it to the heat pump through the pipe for cooling, and then supply cold water to cold users through the pipe. The water that has completed the heat exchange is led to the middle layer of the medium storage chamber 51 through the first pipe 52. As the temperature gradually rises, the pumping position of the branch pipe at the end of the first pipe gradually moves from the higher edge position to the bottom layer and the center, completing the cross-season cold storage and cooling of the medium storage chamber 51.

[0070] The present invention provides a cross-seasonal energy storage and supply method, which is used to implement a cross-seasonal energy storage and supply system, comprising:

[0071] Determine system control parameters according to seasonal changes and the power load of the new energy generator module 1;

[0072] The control module switches the energy supply mode of the cross-season energy storage system according to the system control parameters. The energy supply modes include:

[0073] In the power supply mode, the new energy generator module 1 directly connects the generated electric energy to the power grid;

[0074] In the power storage mode, the new energy generator module 1 sends the electric load that exceeds the power demand of the grid to the power storage module 7 for storage;

[0075] When the power generation load of the new energy generator module 1 cannot meet the load requirement of the power grid, the power storage module 7 supplies power to the power grid;

[0076] When the power generation load of the new energy generator module 1 exceeds the load requirement of the grid, according to the seasonal environment:

[0077] Driving the first heat pump unit module and the medium heat storage module to work in a heat storage mode;

[0078] Or, drive the second heat pump unit module and the medium cold storage module to work in the cold storage mode.

[0079] Season environment is summer:

[0080] The new energy generator module 1 supplies power to drive the first heat pump module 2 to generate hot water, and the hot water enters the medium heat storage module 5 for energy storage; in winter, heat is supplied to users connected to the first heat pump module 2 through pipelines;

[0081] Season environment is winter:

[0082] The new energy generator module 1 supplies power to drive the second heat pump module 3 to generate cold water, and the cold water enters the medium cold storage module 4 for energy storage;

[0083] In summer, cooling is provided to users connected to the second heat pump unit module 3 through pipelines.

[0084] The first heat pump unit module and the second heat pump unit module in the present invention are specifically transcritical CO2 heat pumps, heat pump units using CO2 as circulating working fluid, CO2 as natural working fluid, Ozone Depletion Potential ODP is 0, Global Warming Potential GWP is 1, and are environmentally friendly. The heat pump unit of the present invention can use the electric energy of the generator set to drive the production of heat and cold energy, and can operate efficiently in severe cold areas.

[0085] The present invention utilizes a medium storage cavity to efficiently store unstable energy from wind power and photovoltaic power by utilizing a heat pump unit to store cold in winter and heat in summer. Then, through cross-seasonal energy storage, the cold energy stored in winter is used for cooling in summer, and the heat energy stored in summer is used for heating in winter, thereby achieving a stable and efficient energy supply for wind power and photovoltaic power stations.

[0086] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A cross-season energy storage and supply system, characterized in that: It comprises a new energy generator module (1), a first heat pump module (2), a second heat pump module (3), a medium cold storage module (4), a medium heat storage module (5) and a control module (6); The new energy generator module (1) is electrically connected to the first heat pump module (2), the second heat pump module (3) and the power grid via the control module (6); the first heat pump module (2) is connected to the medium heat storage module (5) via a pipeline; and the second heat pump module (3) is connected to the medium cold storage module (4) via a pipeline; The control module (6) is used to directly input the electric energy generated by the new energy generator module (1) into the power grid end; When the ambient temperature is higher than the set temperature, the control module (6) controls the new energy generator module (1) to supply power to drive the first heat pump module (2) to generate hot water, the hot water enters the medium heat storage module (5) for energy storage, and when the ambient temperature is lower than the set temperature, heat is supplied to users connected to the first heat pump module (2) through pipelines; When the ambient temperature is lower than the set temperature, the control module (6) controls the new energy generator module (1) to supply power to drive the second heat pump module (3) to generate cold water, the cold water enters the medium cold storage module (4) to store energy, and when the ambient temperature is higher than the set temperature, the cold water is supplied to users connected to the second heat pump module (3) through pipelines; The medium cold storage module (4) and the medium heat storage module (5) have the same structure; The medium heat storage module (5) comprises a medium storage cavity (51), a first pipe (52) and a second pipe (53); one end of the first pipe (52) and the second pipe (53) are connected to the medium storage cavity (51), and the other end of the first pipe (52) and the second pipe (53) are connected to the first heat pump unit module (2); The first heat pump unit module (2), the first pipeline (52), the medium storage cavity (51) and the second pipeline (53) form a closed loop for medium flow; The medium cold storage module (4) and the medium heat storage module (5) have the same structure; The medium heat storage module (5) comprises a medium storage cavity (51), a first pipe (52) and a second pipe (53); one end of the first pipe (52) and the second pipe (53) are connected to the medium storage cavity (51), and the other end of the first pipe (52) and the second pipe (53) are connected to the first heat pump unit module (2); The first heat pump unit module (2), the first pipeline (52), the medium storage cavity (51) and the second pipeline (53) form a closed loop for medium flow; Two layers of horizontal partition plates (54) are arranged inside the medium storage cavity (51), and the two layers of horizontal partition plates (54) divide the medium storage cavity (51) into an upper cavity (55), a middle cavity (56), and a lower cavity (57); The ends of the first pipe (52) and the second pipe (53) away from the first heat pump unit module (2) are both provided with branch pipes (58) that are simultaneously connected to the upper cavity (55), the middle cavity (56) and the lower cavity (57); Wherein, a lifting and lowering adjustment component (8) is provided at the bottom of the horizontal dividing plate (54), and the lifting and lowering adjustment component (8) is used to adjust the height position of the horizontal dividing plate (54) inside the medium storage cavity (51); The first pipeline (52) is connected to the branch pipeline (58) via a telescopic pipeline (59); a lifting device (9) is connected to the first pipeline (52); an output end of the lifting device (9) is connected to the branch pipeline (58); the lifting device (9) is used to drive the branch pipeline (58) to move in a height direction of the medium storage cavity (51); and the telescopic pipeline (59) is used to extend and contract in coordination with the position change of the branch pipeline (58).

2. The inter-seasonal energy storage and supply system according to claim 1 is characterized in that: An electricity storage module (7) is provided between the new energy generator module (1) and the control module (6), and the electricity storage module (7) is used to store electricity when the control module (6) is used to directly input the electric energy generated by the new energy generator module (7) into the power grid to generate a power generation load; The power storage module (7) is used to release electric energy to the power grid when the electric energy generated by the new energy generator module (1) cannot meet the load of the power grid.

3. The inter-seasonal energy storage and supply system according to claim 1 is characterized in that: The end of the first pipe (52) connected to the medium storage cavity (51) is located in the upper middle part of the medium storage cavity (51); and the end of the second pipe (53) connected to the medium storage cavity (51) is located in the lower part of the medium storage cavity (51).

4. A cross-seasonal energy storage and supply method, used to implement the cross-seasonal energy storage and supply system according to claim 1, characterized in that: include: Determine system control parameters according to seasonal changes and the electric energy load of the new energy generator module (1); The control module switches the energy supply mode of the inter-seasonal energy storage and supply system according to the system control parameters, and the energy supply mode specifically includes: In the power supply mode, the new energy generator module (1) directly connects the generated electric energy to the power grid; In the power storage mode, the new energy generator module (1) sends the electric load that exceeds the power demand of the power grid to the power storage module (7) for storage; When the power generation load of the new energy power generation unit module (1) cannot meet the load requirement of the power grid, the power storage module (7) supplies power to the power grid; When the power generation load of the new energy generator module (1) exceeds the load requirement of the power grid, according to the seasonal environment: Driving the first heat pump unit module and the medium heat storage module to work in a heat storage mode; Or, drive the second heat pump unit module and the medium cold storage module to work in the cold storage mode.

5. The cross-seasonal energy storage and supply method according to claim 4 is characterized in that: The seasonal environment is summer: The new energy generator module (1) supplies power to drive the first heat pump module (2) to generate hot water, and the hot water enters the medium heat storage module (5) for energy storage; in winter, heat is supplied to users connected to the first heat pump module (2) through pipelines; The seasonal environment is winter: The new energy generator module (1) supplies power to drive the second heat pump module (3) to generate cold water, and the cold water enters the medium cold storage module (4) to store energy; In summer, cooling is provided to users connected to the second heat pump unit module (3) through pipelines.

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