Thermal management system of integrated energy device and working method of thermal management system

Abstract

The present invention relates to the technical field of energy management, and in particular to a thermal management system of an integrated energy device and a working method of the thermal management system. The thermal management system of an integrated energy device comprises a steam compression unit, a heat source cooling unit, a hot water recovery unit and an air conditioner unit having a heat recovery function; the steam compression unit comprises a first heat exchanger, a four-way valve, a compressor, a second heat exchanger and an expansion valve; the heat source cooling unit comprises a heat source, a first control valve and a second control valve; the hot water recovery unit comprises a hot water tank, a third control valve and a fourth control valve; and the air conditioner unit having a heat recovery function comprises a heat exchange pipe. According to the thermal management system of an integrated energy device provided by the present invention, when a heat source is cooled, heat generated by the heat source can be recycled, and the heat management system has multiple working modes and can meet diversified requirements in actual working scenarios.

Description

A thermal management system integrating energy equipment and its working method Technical Field

[0001] The present invention relates to the technical field of energy management, and in particular to a thermal management system integrating energy equipment and a working method thereof. Background Art

[0002] Solar energy storage charging, discharging, and inspection equipment generate significant heat during operation, necessitating cooling of high-temperature components. Traditionally, air cooling is used to dissipate heat through fans and discharge it into the atmosphere. However, this approach suffers from poor cooling effectiveness, high energy consumption, high costs, high noise levels, unusable heat emissions, and environmental pollution.

[0003] Patent application number CN115866983A, entitled "Cooling System and Control Method for Charging System," discloses a cooling system that uses a refrigerant to cool a heat-generating power module at an evaporator. Heat absorbed by the refrigerant is then discharged at a condenser. While this liquid cooling approach provides effective heat dissipation, the heat is still discharged into the atmosphere, rendering it unusable and polluting the environment. Furthermore, existing cooling systems have limited functionality. For example, they can only cool heat-generating power modules and cannot meet domestic hot water needs or indoor cooling / heating requirements. Technical issues

[0004] In order to solve the technical problems that the heat energy of the existing cooling system cannot be recycled and utilized and its limited functions cannot meet various needs, the present invention provides a thermal management system that integrates energy equipment, can recycle heat energy, and can also meet diversified needs such as domestic hot water and indoor cooling / heating. Technical Solutions

[0005] The technical solution adopted in the present invention is as follows:

[0006] A thermal management system for integrated energy equipment, comprising:

[0007] a steam compression unit comprising a first heat exchanger, a four-way valve, a compressor, a second heat exchanger, and an expansion valve;

[0008] a heat source cooling unit, the heat source cooling unit comprising a heat source, a first control valve, and a second control valve, the first control valve being disposed in a first cooling branch that is in communication with the first heat exchanger and performs heat exchange, the second control valve being disposed in a second cooling branch that is in communication with the second heat exchanger and performs heat exchange, the first cooling branch and the second cooling branch being disposed in parallel, the heat source and the first cooling branch forming a first cooling circuit, and the heat source and the second cooling branch forming a second cooling circuit;

[0009] a hot water recovery unit, the hot water recovery unit comprising a hot water tank, a third control valve, and a fourth control valve, the third control valve being disposed in a first heating branch that is in communication with the first heat exchanger and performs heat exchange, the fourth control valve being disposed in a second heating branch that is in communication with the second heat exchanger and performs heat exchange, the first heating branch and the second heating branch being disposed in parallel, the hot water tank and the first heating branch forming a first heating circuit, and the hot water tank and the second heating branch forming a second heating circuit;

[0010] A heat recovery air conditioning unit includes a heat exchange pipe, and the heat exchange pipe is arranged in an air conditioning circuit that is connected to the second heat exchanger and performs heat exchange.

[0011] Further,

[0012] The steam compression unit also includes a third heat exchanger, which is an air heat exchanger. The third heat exchanger is arranged in parallel with the first heat exchanger. A fifth control valve is provided on the parallel branch where the third heat exchanger is located, and a sixth control valve is provided on the parallel branch where the first heat exchanger is located.

[0013] Further,

[0014] The heat source is a heat generating component in the solar storage and charging system.

[0015] Further,

[0016] The air conditioning circuit of the heat recovery air conditioning unit also includes a seventh control valve; the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve, the sixth control valve, and the seventh control valve are all flow control valves.

[0017] Further,

[0018] The heat source cooling unit also includes a first liquid pump and a cold liquid tank, and the first liquid pump drives the first coolant in the cold liquid tank to circulate in the first cooling circuit or the second cooling circuit; the heat recovery air-conditioning unit also includes a second liquid pump and a buffer tank, and the second liquid pump is used to drive the second coolant in the buffer tank to circulate in the air-conditioning circuit; the hot water recovery unit also includes a water pump, and the water pump is used to drive water to circulate in the first heating circuit or the second heating circuit.

[0019] Further,

[0020] The hot water tank is provided with a water outlet and a water filling port; the hot water tank is also provided with a float valve, which is connected to the water filling port. When the water level in the hot water tank is lower than the set water level, the float valve opens to add tap water to the hot water tank; the hot water tank also includes a temperature sensor, a solenoid valve, an overflow port and an electric heater. When the temperature sensor detects that the water temperature in the hot water tank exceeds the set upper temperature limit, the solenoid valve opens, the water filling port forces tap water to be added to the hot water tank, and excess water flows out from the overflow port. When the temperature sensor detects that the water temperature in the hot water tank is lower than the set lower temperature limit, the electric heater assists in heating.

[0021] Another aspect of the present invention provides a method for operating a thermal management system for an integrated energy device, comprising the following steps:

[0022] receiving a first demand instruction for controlling the operation of the heat source cooling unit;

[0023] receiving a second demand instruction for controlling the operation of the heat recovery air conditioning unit;

[0024] receiving a third demand instruction for controlling the operation of the hot water recovery unit;

[0025] The thermal management system is controlled to operate according to the first demand instruction, the second demand instruction, and the third demand instruction.

[0026] Further,

[0027] A temperature measuring device is provided at the heat source of the heat source cooling unit, and the temperature measuring device sends the first demand instruction according to the detected temperature.

[0028] Optionally,

[0029] The thermal management system can operate in a heat source cooling, air conditioning heating, and hot water supply mode according to demand; a heat source cooling, air conditioning heating, and no hot water supply mode; a heat source cooling, air conditioning refrigeration, and hot water supply mode; a heat source cooling, air conditioning neither heating nor refrigeration, and hot water supply mode; a heat source neither cooling nor heating, air conditioning refrigeration, and hot water supply mode; a heat source neither cooling nor heating, air conditioning neither heating nor refrigeration, and no hot water supply mode; a heat source heating, air conditioning refrigeration, and hot water supply mode; a heat source heating, air conditioning refrigeration, and no hot water supply mode.

[0030] Optionally,

[0031] The steam compression unit further includes a third heat exchanger, which is an air heat exchanger and is arranged in parallel with the first heat exchanger. A fifth control valve is provided on the parallel branch where the third heat exchanger is located, and a sixth control valve is provided on the parallel branch where the first heat exchanger is located.

[0032] The thermal management system can work in the heat source cooling, air conditioning heating, and hot water supply mode according to demand; heat source cooling, air conditioning heating, and no hot water supply mode; heat source cooling, air conditioning refrigeration, and hot water supply mode; heat source cooling, air conditioning refrigeration, and no hot water supply mode; heat source cooling, air conditioning neither heating nor refrigeration, and hot water supply mode; heat source cooling, air conditioning neither heating nor refrigeration, and no hot water supply mode; heat source neither cooling nor heating, air conditioning heating, and hot water supply mode; heat source neither cooling nor heating, air conditioning heating, and no hot water supply mode; heat source neither cooling nor heating, air conditioning heating, and no hot water supply mode; heat source neither cooling nor heating, air conditioning heating, and no hot water supply mode Water mode; heat source does not cool or heat, air conditioning cools, and no hot water is provided; heat source does not cool or heat, air conditioning does not heat or cool, and hot water is provided; heat source does not cool or heat, air conditioning does not heat or cool, and no hot water is provided; heat source heats, air conditioning heats, and hot water is provided; heat source heats, air conditioning heats, and no hot water is provided; heat source heats, air conditioning cools, and hot water is provided; heat source heats, air conditioning cools, and no hot water is provided; heat source heats, air conditioning does not heat or cool, and hot water is provided; heat source heats, air conditioning does not heat or cool, and hot water is provided; heat source heats, air conditioning does not heat or cool, and no hot water is provided. Beneficial effects

[0033] Beneficial effects of the present invention:

[0034] 1. The present invention provides a thermal management system that integrates energy equipment and can recycle the heat generated by the heat source while cooling the heat source for use in domestic hot water and air conditioning heating, thereby reducing heat emissions to the environment, being environmentally friendly and energy-saving, and achieving the production of clean energy.

[0035] 2. The present invention provides a thermal management system that integrates energy equipment and has multiple working modes to meet diverse working needs. For example, it can recover heat energy when the heat source cooling unit cools the heat source, and it can also achieve cooling / heating, domestic hot water use, etc. when the heat source cooling unit does not cool the heat source.

[0036] 3. The present invention provides a thermal management system for integrated energy equipment, which can be applied in a solar storage and charging system. It cools the energy storage system and the charging system through liquid cooling, sets a lower temperature according to relevant requirements, improves heat exchange efficiency, meets the heat dissipation needs of high-power charging, and ensures its efficient and stable operation.

[0037] 4. The present invention provides a thermal management system for integrated energy equipment. Each unit only needs to be connected through pipe joints, and does not adopt traditional fan heat dissipation methods. It is convenient for production installation and later maintenance, and has low noise and high protection level, which extends the service life of the entire system.

[0038] 5. The present invention provides a thermal management system for integrated energy equipment, in which each flow channel in each heat exchanger circulates independently and exchanges heat fully, each unit is relatively independent, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 is a schematic diagram of the overall structure of a thermal management system for integrated energy equipment according to Example 1;

[0040] FIG2 is a schematic structural diagram of a steam compression unit according to the first embodiment;

[0041] FIG3 is a schematic structural diagram of a heat source cooling unit according to the first embodiment;

[0042] FIG4 is a schematic structural diagram of a hot water recovery unit according to the first embodiment;

[0043] FIG5 is a schematic structural diagram of a heat recovery air conditioning unit according to the first embodiment;

[0044] FIG6 is a schematic diagram of the overall structure of a thermal management system for integrated energy equipment according to Example 2;

[0045] FIG7 is a schematic structural diagram of a steam compression unit according to the second embodiment.

[0046] in,

[0047] Vapor compression unit 1, first heat exchanger 11, first refrigerant flow channel 111, first cooling flow channel 112, first heating flow channel 113, sixth control valve 114, four-way valve 12, compressor 13, second heat exchanger 14, second refrigerant flow channel 141, second cooling flow channel 142, second heating flow channel 143, air conditioning flow channel 144, expansion valve 15, third heat exchanger 16, fifth control valve 161, first fan 162;

[0048] Heat source cooling unit 2, heat source 21, first control valve 22, first cooling branch 221, second control valve 23, second cooling branch 231, first liquid pump 24, cold liquid tank 25;

[0049] Hot water recovery unit 3, hot water tank 31, water outlet 311, water supply port 312, float valve 313, temperature sensor 314, solenoid valve 315, overflow port 316, electric heater 317, third control valve 32, first heating branch 321, fourth control valve 33, second heating branch 331, water pump 34;

[0050] Heat recovery air conditioning unit 4, air conditioning circuit 41, second liquid pump 42, buffer tank 43, radiation coil 44, seventh control valve I 441, fan coil 45, seventh control valve II 451, second fan 452. Best Mode for Carrying Out the Invention

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention. Example 1

[0052] As shown in Figures 1-5, this embodiment provides a thermal management system for integrated energy equipment, which includes a steam compression unit 1, a heat source cooling unit 2, a hot water recovery unit 3, and a heat recovery air conditioning unit 4, wherein:

[0053] The steam compression unit 1 includes a first heat exchanger 11, a four-way valve 12, a compressor 13, a second heat exchanger 14 and an expansion valve 15. The four-way valve 12 includes a port C, a port D, a port E and a port S. The first heat exchanger 11 includes a first refrigerant flow channel 111, and the second heat exchanger 14 includes a second refrigerant flow channel 141. When the first heat exchanger 11 needs to be used as an evaporator and the second heat exchanger 14 needs to be used as a condenser, the four-way valve 12 is switched to connect the port E with the port S and connect the port C with the port D, and the refrigerant flows along the evaporator. The refrigerant circulates in a counterclockwise direction through the first heat exchanger 11, interface E, interface S, compressor 13, interface D, interface C, second heat exchanger 14, and expansion valve 15; when the first heat exchanger 11 needs to be used as a condenser and the second heat exchanger 14 needs to be used as an evaporator, the four-way valve 12 is switched to connect interface C and interface S, and connect interface D and interface E, and the refrigerant circulates in a clockwise direction through the third heat exchanger 14, interface C, interface S, compressor 13, interface D, interface E, first heat exchanger 11, and expansion valve 15.

[0054] The heat source cooling unit 2 includes a heat source 21, a first control valve 22 and a second control valve 23. The first heat exchanger 11 also includes a first cooling channel 112. The first control valve 22 is connected to the first cooling channel 112 through a pipeline to form a first cooling branch 221. The first cooling branch 221 performs heat exchange with the first refrigerant channel 111 through the first cooling channel 112; the second heat exchanger 14 also includes a second cooling channel 142. The second control valve 23 is connected to the second cooling channel 142 through a pipeline to form a second cooling branch 231. The second cooling branch 231 performs heat exchange with the second refrigerant channel 141 through the second cooling channel 142. The first cooling branch 221 and the second cooling branch 231 are arranged in parallel, and the heat source 21 is a heat source that generates heat. The heat source 21 is connected to the first cooling branch 221 to form a first cooling circuit, and the heat source 21 is connected to the second cooling branch 231 to form a second cooling circuit; when the first control valve 22 is switched on, the first cooling circuit works, and the heat source 21 can exchange heat with the first heat exchanger 11; when the second control valve 23 is switched on, the second cooling circuit works, and the heat source 21 can exchange heat with the second heat exchanger 14.

[0055] The hot water recovery unit 3 includes a hot water tank 31, a third control valve 32 and a fourth control valve 33. The first heat exchanger 11 also includes a first heating channel 113. The third control valve 32 is connected to the first heating channel 113 through a pipeline to form a first heating branch 321. The first heating branch 321 performs heat exchange with the first refrigerant channel 111 through the first heating channel 113. The second heat exchanger 14 also includes a second heating channel 143. The third control valve 32 is connected to the second heating channel 143 through a pipeline to form a second heating branch 331. The second heating branch 331 performs heat exchange with the second refrigerant channel 141 through the second heating channel 143. The first heating branch 321 and the second heating branch 331 are arranged in parallel. The hot water tank 31 is used to provide domestic hot water that can be used for bathing. The hot water tank 31 is connected to the first heating branch 321 to form a first heating circuit, and the heat source 21 is connected to the second heating branch 331 to form a second heating circuit; when the third control valve 32 is switched on, the first heating circuit is activated, and the hot water tank 31 can exchange heat with the first heat exchanger 11; when the fourth control valve 33 is switched on, the second heating circuit is activated, and the hot water tank 31 can exchange heat with the second heat exchanger 14.

[0056] The heat recovery air conditioning unit 4 includes a heat exchange tube, which can be, but not limited to, a radiation coil 44.

[0057] , fan coil units 45, etc., for indoor cooling or heating. The second heat exchanger 14 also includes an air conditioning flow channel 144. The heat exchange tubes are connected to the air conditioning flow channel 144 via pipelines to form an air conditioning circuit 41. When the air conditioning circuit 41 is in operation, heat is exchanged with the second refrigerant flow channel 141 through the air conditioning flow channel 144.

[0058] Thus, the present embodiment provides a thermal management system for integrating energy equipment. When the heat source 21 in the heat source cooling unit 2 generates heat, it is cooled by liquid cooling, which has a good cooling effect. Moreover, the heat can be transported to the hot water tank 31 of the hot water recovery unit 3 through the steam compression unit 1 to provide domestic hot water, or the heat can be transported to the heat exchange pipe of the heat recovery air conditioning unit 4 to heat the room. In this way, the heat energy can be recycled and utilized, heat emissions can be reduced, and environmental protection and energy saving can be achieved. In addition, the thermal management system provided in this embodiment, in addition to cooling and heat recovery when the heat source 21 generates heat, also has multiple other functions that can meet the diverse needs in actual application scenarios.

[0059] As shown in Figures 1 and 2, the steam compression unit 1 also includes a third heat exchanger 16. The third heat exchanger 16 is an air heat exchanger, which can be, but is not limited to, a tube-and-fin heat exchanger. It includes a third refrigerant flow channel and is equipped with a first fan 162 to achieve forced convection in the air channel to achieve heat exchange between the third heat exchanger 16 and the air source. The third heat exchanger 16 is arranged in parallel with the first heat exchanger 11, and a fifth control valve 161 is provided on the parallel branch where the third heat exchanger 16 is located, and a sixth control valve 114 is provided on the parallel branch where the first heat exchanger 11 is located. When the fifth control valve 161 is switched on, the third heat exchanger 16 operates; when the sixth control valve 114 is switched on, the first heat exchanger 11 operates.

[0060] The refrigerant in the first refrigerant flow channel 111 of the first heat exchanger 11, the second refrigerant flow channel 141 of the second heat exchanger 14 and the third refrigerant flow channel of the third heat exchanger 16 may be, but is not limited to, R32 refrigerant, R410A refrigerant, R134A refrigerant, etc.; the liquid in the first cooling flow channel 112 of the first heat exchanger 11 and the second cooling flow channel 142 of the second heat exchanger 14 may be, but is not limited to, ethylene glycol aqueous solution; the liquid in the first heating flow channel 113 of the first heat exchanger 11 and the second heating flow channel 143 of the second heat exchanger 14 is preferably water; the liquid in the air-conditioning flow channel 144 of the second heat exchanger 14 may be, but is not limited to, water.

[0061] The number of first heat exchangers 11 is preferably one, and the first refrigerant flow channel 111, the first cooling flow channel 112 and the first heating flow channel 113 are integrated in one first heat exchanger 11, or multiple independent first heat exchangers 11 can be set for heat exchange. For example, two first heat exchangers 11 are set, and the two first heat exchangers 11 are respectively provided with a first cooling flow channel 112 and a first heating flow channel 113 for heat exchange. Similarly, the number of second heat exchangers 14 is preferably one, and the second refrigerant flow channel 141, the second cooling flow channel 142, the second heating flow channel 143 and the air-conditioning flow channel 144 are integrated in one second heat exchanger 14, or multiple independent second heat exchangers 14 can be set for heat exchange. For example, three second heat exchangers 14 are set, and the three first heat exchangers 11 are respectively set with the second cooling flow channel 142, the second heating flow channel 143 and the air-conditioning flow channel 144 for heat exchange; or two second heat exchangers 14 can be set, and one second heat exchanger 14 is set with two of the second cooling flow channel 142, the second heating flow channel 143 and the air-conditioning flow channel 144, and the other second heat exchanger 14 is set with the remaining third type.

[0062] The steam compression unit 1 can be divided into two modes: heating cycle and cooling cycle. The heating cycle mode means that the second heat exchanger 14 heats the condenser; the cooling cycle mode means that the second heat exchanger 14 cools the evaporator.

[0063] In the heating cycle mode, the second heat exchanger 14 is a condenser, and the first heat exchanger 11 and / or the third heat exchanger 16 is an evaporator. The low-temperature refrigerant in the first heat exchanger 11 and / or the third heat exchanger 16 passes through the port E of the four-way valve 12 and then flows through the port S, and is then sucked into the compressor 13 to perform work and compressed into a high-temperature refrigerant. The high-temperature refrigerant flows through the ports D and C of the four-way valve 12 and then flows to the second heat exchanger 14. The high-temperature refrigerant releases heat in the second heat exchanger 14 and becomes a medium-temperature refrigerant. It is then throttled by the expansion valve 15 and becomes a low-temperature refrigerant, and then flows into the first heat exchanger 11 and / or the third heat exchanger 16. The low-temperature refrigerant absorbs heat at the first heat exchanger 11 and / or the third heat exchanger 16 and releases heat at the second heat exchanger 14, realizing a closed heating cycle.

[0064] In the refrigeration cycle mode, the second heat exchanger 14 is an evaporator, and the first heat exchanger 11 and / or the third heat exchanger 16 is a condenser. The low-temperature refrigerant in the second heat exchanger 14 passes through the interface C of the four-way valve 12 and then flows through the interface S, and is then sucked into the compressor 13 to perform work and compressed into a high-temperature refrigerant. The high-temperature refrigerant flows through the interfaces D and E of the four-way valve 12, and then flows to the first heat exchanger 11 and / or the third heat exchanger 16. The high-temperature refrigerant releases heat in the first heat exchanger 11 and / or the third heat exchanger 16 and becomes a medium-temperature refrigerant. It is then throttled by the expansion valve 15 and becomes a low-temperature refrigerant, and then flows into the second heat exchanger 14. The low-temperature refrigerant absorbs heat at the second heat exchanger 14 and releases heat at the first heat exchanger 11 and / or the third heat exchanger 16, realizing a closed refrigeration cycle.

[0065] The fifth control valve 161 and the sixth control valve 114 are both flow control valves, and the refrigerant flow rate can be adjusted by the fifth control valve 161 and the sixth control valve 114 .

[0066] As shown in Figures 1 and 3, the heat source cooling unit 2 also includes a first liquid pump 24 and a cold liquid tank 25. The cold liquid tank 25 is provided with a first coolant. The first coolant can be, but is not limited to, an ethylene glycol aqueous solution. The first liquid pump 24 is used to drive the first coolant in the cold liquid tank 25 to circulate in the first cooling circuit or the second cooling circuit. Specifically, after the first coolant absorbs heat from the heat source 21, it becomes a medium-temperature fluid and enters the steam compression unit 1, and exchanges heat with the low-temperature refrigerant at the first heat exchanger 11 or the second heat exchanger 14 in the steam compression unit 1. After releasing heat, it becomes a low-temperature fluid and then flows into the cold liquid tank 25, forming a closed cooling cycle.

[0067] The number of heat sources 21 can be one or more. When there are multiple heat sources 21, the heat sources 21 are arranged in parallel.

[0068] Preferably, the thermal management system of this embodiment can be optionally, but not limited to, applied in a photovoltaic storage and charging system to form a photovoltaic storage and charging heat system to dissipate heat from heat-generating components such as the energy storage system and the charging system. Multiple heat-dissipating components are arranged in parallel. Specifically, the photovoltaic storage and charging system includes a photovoltaic system, a power grid, a power distribution system, an energy storage system, and charging piles. The photovoltaic system and the power grid supply power to the distribution system. The energy storage system discharges to the distribution system during peak hours and draws power from the distribution system during off-peak hours. The charging piles also draw power from the distribution system to charge charging devices such as cars. There are multiple charging and discharging processes in the photovoltaic storage and charging system, which generate a large amount of heat. Heat-generating components such as the energy storage system and the charging piles are arranged in parallel and cooled by liquid cooling to improve heat exchange efficiency, meet the heat dissipation requirements of high-power charging, and ensure efficient and stable operation of the photovoltaic storage and charging system.

[0069] When the vapor compression unit 1 is in the heating cycle mode, the second heat exchanger 14 is formed as a condenser. If the heat source 21 needs to be cooled, the first heat exchanger 11 is formed as an evaporator, the first control valve 22 is opened, and the second control valve 23 is closed. The first coolant in the cold liquid tank 25 is powered by the first liquid pump 24, and the low-temperature fluid is input into the heat source 21. After absorbing its heat, it enters the first heat exchanger 11 through the first control valve 22, exchanges heat with the low-temperature refrigerant in the first heat exchanger 11, releases heat, and becomes a low-temperature fluid that flows into the cold liquid tank 25, forming a closed cooling cycle; if the heat source 21 does not need to be cooled, the first cooling circuit does not work, and the first liquid pump 24 does not work. When the vapor compression unit 1 is in the refrigeration cycle mode, the second heat exchanger 14 is formed as an evaporator. If the heat source 21 needs to be cooled, the first heat exchanger 11 is formed as a condenser. The first control valve 22 is closed and the second control valve 23 is opened. The first coolant in the cold liquid tank 25 is powered by the first liquid pump 24 and inputs the low-temperature fluid into the heat source 21. After absorbing the heat, the first coolant enters the second heat exchanger 14 through the second control valve 23 and exchanges heat with the low-temperature refrigerant in the second heat exchanger 14. After releasing heat, the low-temperature fluid flows into the cold liquid tank 25, forming a closed cooling cycle. If the heat source 21 does not need to be cooled, the second cooling circuit does not operate and the first liquid pump 24 does not operate. Whether the heat source 21 needs to be cooled can be detected by providing a temperature measuring device at the heat source 21. For example, when the measured temperature exceeds a high temperature threshold (such as 25°C), it indicates that the heat source 21 needs to be cooled. When the measured temperature is below the high temperature threshold, it indicates that the heat source 21 does not need to be cooled.

[0070] In some cases, such as in a solar storage and charging system, when the temperature of the energy storage system is too low, the activity of the energy storage battery is low and the charging efficiency is slow. At this time, the thermal management system of this embodiment can also heat these heat sources 21. When the steam compression unit 1 is in the heating cycle mode, the second heat exchanger 14 is formed as a condenser, the first control valve 22 is closed, and the second control valve 23 is opened. The first coolant in the cold liquid tank 25 is powered by the first liquid pump 24, and the low-temperature fluid is input into the second heat exchanger 14 through the second control valve 23, and heat is exchanged with the high-temperature refrigerant in the second heat exchanger 14. After absorbing heat, it becomes a medium-temperature fluid and flows into the cold liquid tank 25, and is then heated by the heat source 21 to form a closed cycle. When the vapor compression unit 1 is in refrigeration cycle mode, the second heat exchanger 14 forms an evaporator and the first heat exchanger 11 forms a condenser. The first control valve 22 is opened and the second control valve 23 is closed. The first coolant in the cold liquid tank 25 is powered by the first liquid pump 24, and the low-temperature fluid is input into the first heat exchanger 11 through the first control valve 22. After heat exchange with the high-temperature refrigerant in the first heat exchanger 11, after absorbing heat, the medium-temperature fluid flows into the cold liquid tank 25 and is then heated by the heat source 21, forming a closed cycle. Similarly, whether the heat source 21 needs to be heated can be detected by a temperature measuring device. For example, when the measured temperature is lower than a low-temperature threshold (e.g., 0°C), it indicates that the heat source 21 needs to be heated. When the measured temperature is higher than the low-temperature threshold, it indicates that the heat source 21 does not need to be heated.

[0071] The first control valve 22 and the second control valve 23 are both flow control valves. The first cooling circuit can adjust the coolant flow through the first control valve 22 , and the second cooling circuit can adjust the coolant flow through the second control valve 23 .

[0072] As shown in Figures 1 and 4, the hot water recovery unit 3 also includes a water pump 34, which is used to drive water to circulate in the first heating circuit or the second heating circuit. Specifically, the cold water in the hot water tank 31 is driven by the water pump 34 to exchange heat with the high-temperature refrigerant at the first heat exchanger 11 or the second heat exchanger 14 in the steam compression unit 1. After absorbing heat, it becomes hot water and then flows into the hot water tank 31, forming a closed heating cycle.

[0073] In this embodiment, a water outlet 311 and a water replenishing port 312 are provided on the hot water tank 31. The water outlet 311 is used to release hot water for use, and the water replenishing port 312 is used to replenish cold water, i.e., tap water. A float valve 313 is also provided in the hot water tank 31, and the float valve 313 is connected to the water replenishing port 312. When the hot water is used and the water level in the hot water tank 31 is lower than the set water level, the float valve 313 opens to automatically replenish tap water into the hot water tank 31 until the float rises and closes the float valve 313.

[0074] The hot water tank 31 also includes a temperature sensor 314, a solenoid valve 315, an overflow port 316, and an electric heater 317. When the temperature sensor 314 detects that the water temperature in the hot water tank 31 exceeds a set upper temperature limit (e.g., 40°C, a suitable domestic hot water temperature), the solenoid valve 315 opens, and the water supply port 312 forcibly replenishes tap water into the hot water tank 31 to control the temperature. Excess water flows out of the overflow port 316, ensuring that there is sufficient space in the hot water tank 31 for replenishing tap water to absorb heat, ensuring that the water level remains safe and can operate normally under special circumstances. The solenoid valve 315 and the float valve 313 are arranged in parallel, that is, they are each separately connected to the water supply port 312, thereby ensuring that water can be replenished in the event of water shortage or excessive water temperature without affecting each other. When the temperature sensor 314 detects that the water temperature in the hot water tank 31 is lower than the set lower temperature limit (such as 40°C, a suitable domestic hot water temperature, or 0°C, a temperature at which freezing may occur), the electric heater 317 provides auxiliary heating to ensure that hot water is always supplied to the water outlet 311 when hot water is needed; and to ensure that the water does not freeze in the cold winter to avoid damage to the equipment.

[0075] The hot water tank 31 of this embodiment may be one or more. When there are multiple hot water tanks 31, the multiple hot water tanks 31 are preferably connected in parallel.

[0076] When the steam compression unit 1 is in the heating cycle mode, the second heat exchanger 14 functions as a condenser. If hot water is required, the third control valve 32 is closed and the fourth control valve 33 is opened. The cold water in the hot water tank 31 is pumped through the water pump 34 to perform work, then flows through the fourth control valve 33 and then through the second heat exchanger 14. After absorbing heat, it becomes hot water and then flows into the hot water tank 31, completing a closed heat exchange cycle. If hot water is not required, the second heating circuit does not operate, and the water pump 34 does not operate. When the steam compression unit 1 is in the cooling cycle mode, the second heat exchanger 14 functions as an evaporator. If hot water is required, the first heat exchanger 11 functions as a condenser. The third control valve 32 is opened and the fourth control valve 33 is closed. The cold water in the hot water tank 31 is pumped through the water pump 34 to perform work, then flows through the third control valve 32 and then through the first heat exchanger 11. After absorbing heat, it becomes hot water and then flows into the hot water tank 31, completing a closed heat exchange cycle. If hot water is not required, the first heating circuit does not operate, and the water pump 34 does not operate.

[0077] The third control valve 32 and the fourth control valve 33 are both flow control valves. The water flow of the first heating circuit can be regulated by the third control valve 32 , and the water flow of the second heating circuit can be regulated by the fourth control valve 33 .

[0078] As shown in Figures 1 and 5, the heat recovery air-conditioning unit 4 also includes a second liquid pump 42 and a buffer tank 43. A second coolant is set in the buffer tank 43. The second coolant is preferably water. The second liquid pump 42 is used to drive the second coolant in the buffer tank 43 to circulate in the air-conditioning circuit 41. Specifically, the second coolant in the buffer tank 43 is driven by the second liquid pump 42, flows through the heat exchange tube, and then exchanges heat with the second heat exchanger 14 in the steam compression unit 1. After absorbing or releasing heat, it enters the buffer tank and then flows through the heat exchange tube to heat / cool the room, completing the heat exchange cycle.

[0079] The heat exchange tube is used to heat or cool the room. In this embodiment, there may be one or more heat exchange tubes. When there are multiple heat exchange tubes, the multiple heat exchange tubes are preferably arranged in parallel.

[0080] In this embodiment, there are two heat exchange tubes: a radiant coil 44 and a fan coil 45. The radiant coil 44 primarily uses floor heating or capillary radiation, transferring energy to the surrounding area through radiation. The fan coil 45, consisting of a fin-and-tube heat exchanger and a second fan 452, transfers energy to the surrounding area through convective heat transfer. A seventh control valve is also provided in the air conditioning circuit 41. Specifically, it includes a seventh control valve I 441 and a seventh control valve II 451. The seventh control valve I 441 is located in the parallel branch of the radiant coil 44, while the seventh control valve II 451 is located in the parallel branch of the fan coil 45.

[0081] When the vapor compression unit 1 is in the heating cycle mode, the second heat exchanger 14 provides heat energy to the condenser. The second coolant absorbs heat at the second heat exchanger 14 to form a high-temperature fluid. When the seventh control valve I 441 is opened, the high-temperature fluid can transfer heat to the surrounding area by radiation through the radiation coil 44. When the seventh control valve II 451 is opened, the high-temperature fluid can transfer heat to the surrounding area by convection heat transfer through the fan coil 45, ultimately meeting the heating demand. When the vapor compression unit 1 is in the cooling cycle mode, the second heat exchanger 14 provides a cold source for the evaporator. The second coolant releases heat at the second heat exchanger 14 to form a low-temperature fluid. When the seventh control valve I 441 is opened, the low-temperature fluid can transfer cold energy to the surrounding area by radiation through the radiation coil 44. When the seventh control valve II 451 is opened, the low-temperature fluid can transfer cold energy to the surrounding area by convection heat transfer through the fan coil 45, ultimately meeting the cooling demand.

[0082] The seventh control valve I 441 and the seventh control valve II 451 are both flow control valves. The seventh control valve I 441 can be used to adjust the coolant flow at the radiation coil 44 , and the seventh control valve II 451 can be used to adjust the coolant flow at the fan coil 45 .

[0083] This embodiment also provides a method for operating the thermal management system described above, comprising the following steps:

[0084] receiving a first demand instruction for controlling the operation of the heat source cooling unit 2;

[0085] receiving a second demand instruction for controlling the operation of the heat recovery air conditioning unit 4;

[0086] receiving a third demand instruction for controlling the operation of the hot water recovery unit 3;

[0087] The thermal management system is controlled to operate according to the first demand instruction, the second demand instruction, and the third demand instruction.

[0088] The heat source cooling unit 2 can be divided into three situations: cooling is required, heating is required, and neither cooling nor heating is required. For example, when the temperature of the heat source 21 exceeds a high temperature threshold (e.g., 25°C), cooling is required; when the temperature of the heat source 21 is below a low temperature threshold (e.g., 0°C), heating is required; and when the temperature of the heat source 21 is between the low and high temperature thresholds, neither cooling nor heating is required. A temperature measuring device can be used to detect the temperature of the heat source 21. Based on the detected temperature, the first demand instruction is automatically sent to the controller. The controller can automatically control the operation of the steam compression unit 1 to maintain the temperature of the heat source 21 within the appropriate operating temperature range.

[0089] The heat recovery air conditioning unit 4 can also be divided into three situations: heating, cooling, and neither heating nor cooling. For example, in the cold winter, the heating mode needs to be activated to heat the room; in the hot summer, the cooling mode needs to be activated to cool the room; and in comfortable seasons or to save energy, neither heating nor cooling is required. The second demand instruction can be sent manually by the operator, or the operating mode can be automatically selected by detecting the ambient temperature and comparing it with a set threshold, and the corresponding second demand instruction is sent to the controller.

[0090] The hot water recovery unit 3 can be divided into two situations: when hot water is required and when it is not. For example, in cold weather, when the tap water temperature cannot meet the usage requirements, hot water is required. In hot weather, when the tap water temperature can meet the usage requirements or to save energy, hot water is not required. The third demand instruction can be sent manually by the staff, or it can be automatically selected by detecting the ambient temperature and comparing it with a set threshold, and the corresponding third demand instruction is sent to the controller.

[0091] In various cases of the heat source cooling unit 2, the heat recovery air conditioning unit 4 has three cases respectively; in various cases of the heat recovery air conditioning unit 4, the hot water recovery unit 3 has two cases respectively. The following Table 1 lists various demand conditions.

[0092] Table 1

[0093]

[0094] According to Table 1, the thermal management system of this embodiment can realize the following working modes according to requirements:

[0095] (1) Heat source cooling, air conditioning heating, and hot water supply modes

[0096] In this operating mode, the heat source 21 needs to be cooled, and the air conditioner, i.e., the heat exchange pipe, needs to be heated. The four-way valve 12 is switched so that the first heat exchanger 11 forms an evaporator, the sixth control valve 114 is opened, and the second heat exchanger 14 forms a condenser. The vapor compression unit 1 is in a heating cycle mode, the first control valve 22 is opened, and the second control valve 23 is closed. The first cooling circuit operates to cool the heat source 21, and the heat of the heat source 21 is transferred from the first heat exchanger 11 to the second heat exchanger 14. The air conditioning circuit 41 operates to heat the air conditioner.

[0097] At this time, due to the need for hot water, third control valve 32 is closed, fourth control valve 33 is opened, and the second heating circuit operates to heat the water in hot water tank 31. When recovered heat cannot meet the air conditioning and hot water needs, auxiliary heating can be provided by opening fifth control valve 161 and third heat exchanger 16. Fifth control valve 161 can be infinitely adjusted from 0% to 100% as needed, absorbing heat from the air source to compensate for the heat exchange of first heat exchanger 11. First control valve 22, fourth control valve 33, sixth control valve 114, seventh control valve I 441, and seventh control valve II 451 can also adjust flow rates as needed.

[0098] (2) Heat source cooling, air conditioning heating, no hot water supply mode

[0099] In this operating mode, the heat source 21 needs to be cooled, and the air conditioner, i.e., the heat exchange pipe, needs to be heated. The four-way valve 12 is switched so that the first heat exchanger 11 forms an evaporator, the sixth control valve 114 is opened, and the second heat exchanger 14 forms a condenser. The vapor compression unit 1 is in a heating cycle mode, the first control valve 22 is opened, and the second control valve 23 is closed. The first cooling circuit operates to cool the heat source 21, and the heat of the heat source 21 is transferred from the first heat exchanger 11 to the second heat exchanger 14. The air conditioning circuit 41 operates to heat the air conditioner.

[0100] At this point, since hot water is not needed, both the first and second heating circuits are deactivated, water pump 34 is shut down, and third and fourth control valves 32 and 33 can be closed. When recovered heat cannot meet the air conditioning heating needs, auxiliary heating can be provided by opening fifth control valve 161 and third heat exchanger 16. Fifth control valve 161 can be infinitely adjusted from 0% to 100% as needed, absorbing heat from the air source to compensate for the heat exchanged by first heat exchanger 11. First control valve 22, sixth control valve 114, seventh control valve I 441, and seventh control valve II 451 can also adjust flow rates as needed.

[0101] (3) Heat source cooling, air conditioning and refrigeration, and hot water supply modes

[0102] In this operating mode, the heat source 21 needs to be cooled, and the air conditioner, i.e., the heat exchange pipe, needs to be refrigerated. The four-way valve 12 is switched so that the second heat exchanger 14 becomes an evaporator, and the vapor compression unit 1 is in the refrigeration cycle mode. The first control valve 22 is closed, and the second control valve 23 is opened. The second cooling circuit cools the heat source 21, and the air conditioning circuit 41 works to cool.

[0103] At this point, due to the need to provide hot water, the first heat exchanger 11 functions as a condenser. The sixth control valve 114 opens, transferring heat from the heat source 21 and the air conditioner from the second heat exchanger 14 to the first heat exchanger 11. The third control valve 32 opens, the fourth control valve 33 closes, and the first heating circuit operates, heating the water in the hot water tank 31. Opening the fifth control valve 161 and the third heat exchanger 16 enables auxiliary heat release into the air. The second control valve 23, the third control valve 32, the sixth control valve 114, the seventh control valve I 441, and the seventh control valve II 451 can adjust flow rates as needed.

[0104] (4) Heat source cooling, air conditioning refrigeration, no hot water supply mode

[0105] In this operating mode, the heat source 21 needs to be cooled, and the air conditioner, i.e., the heat exchange pipe, needs to be refrigerated. The four-way valve 12 is switched so that the second heat exchanger 14 becomes an evaporator, and the vapor compression unit 1 is in the refrigeration cycle mode. The first control valve 22 is closed, and the second control valve 23 is opened. The second cooling circuit cools the heat source 21, and the air conditioning circuit 41 works to cool.

[0106] At this point, since hot water is not needed, both the first and second heating circuits are deactivated, water pump 34 is turned off, and third and fourth control valves 32 and 33 can be closed. Third heat exchanger 16 then functions as a condenser, fifth control valve 161 is open, and sixth control valve 114 can be closed. Heat from heat source 21 and the air conditioner is transferred from second heat exchanger 14 to third heat exchanger 16, where it is released into the air. Second control valve 23, fifth control valve 161, seventh control valve I 441, and seventh control valve II 451 can adjust flow rates as needed.

[0107] (5) Heat source cooling, air conditioning does not heat or cool, and hot water is provided

[0108] In this working mode, the heat source 21 needs to be cooled, the air conditioner, i.e., the heat exchange pipe, does not need to be heated or cooled, the air conditioning circuit 41 does not work, the second liquid pump 42 is turned off, and the seventh control valve I 441 and the seventh control valve II 451 can be closed;

[0109] At this time, due to the need to provide hot water, the four-way valve 12 is switched so that the first heat exchanger 11 forms an evaporator, the sixth control valve 114 is opened, the second heat exchanger 14 forms a condenser, and the steam compression unit 1 is in a heating cycle mode; the first control valve 22 is opened, the second control valve 23 is closed, the first cooling circuit works to cool the heat source 21, and the heat of the heat source 21 is transferred from the first heat exchanger 11 to the second heat exchanger 14, the third control valve 32 is closed, and the fourth control valve 33 is opened, and the second heating circuit works to heat the water in the hot water tank 31; when heat recovery cannot meet the hot water demand, auxiliary heating can be performed by opening the fifth control valve 161 and the third heat exchanger 16. The fifth control valve 161 can be infinitely adjusted from 0% to 100% as needed to absorb heat from the air source, thereby compensating for the heat exchange of the first heat exchanger 11; the first control valve 22, the fourth control valve 33, and the sixth control valve 114 can adjust the flow rate as needed;

[0110] Alternatively, the four-way valve 12 is switched so that the first heat exchanger 11 is formed as a condenser, the sixth control valve 114 is opened, the second heat exchanger 14 is formed as an evaporator, the steam compression unit 1 is in the refrigeration cycle mode, the first control valve 22 is closed, the second control valve 23 is opened, the second cooling circuit works to cool the heat source 21, and the heat of the heat source 21 is transferred from the second heat exchanger 14 to the first heat exchanger 11, the third control valve 32 is opened, the fourth control valve 33 is closed, and the first heating circuit works to heat the water in the hot water tank 31; by opening the fifth control valve 161 and the third heat exchanger 16, auxiliary heat release can be performed to assist in discharging heat into the air; the second control valve 23, the third control valve 32, and the sixth control valve 114 can adjust the flow rate according to demand.

[0111] (6) Heat source cooling, air conditioning does not heat or cool, and does not provide hot water mode

[0112] In this working mode, the heat source 21 needs to be cooled, the air conditioner, i.e., the heat exchange pipe, does not need to be heated or cooled, the air conditioning circuit 41 does not work, the second liquid pump 42 is turned off, and the seventh control valve I 441 and the seventh control valve II 451 can be closed;

[0113] At this time, since hot water is not needed, the water pump 34 is turned off, the third control valve 32 and the fourth control valve 33 can be closed, the four-way valve 12 is switched so that the second heat exchanger 14 forms a condenser, the steam compression unit 1 is in the heating cycle mode, the third heat exchanger 16 forms an evaporator, the fifth control valve 161 is opened, the sixth control valve 114 can be closed, the first control valve 22 is closed, the second control valve 23 is opened, and the second cooling circuit works to cool the heat source 21 and discharge heat into the air through the third heat exchanger 16; the second control valve 23 and the fifth control valve 161 can adjust the flow rate according to demand.

[0114] (7) Heat source does not cool or heat, air conditioning heats, and hot water is provided

[0115] In this operating mode, the heat source 21 does not need to be cooled or heated, and the air conditioner, i.e., the heat exchange pipe, needs to be heated. The first liquid pump 24 is turned off, the first control valve 22 and the second control valve 23 can be closed, and the four-way valve 12 is switched so that the second heat exchanger 14 forms a condenser. The vapor compression unit 1 is in a heating cycle mode, the third heat exchanger 16 forms an evaporator, the fifth control valve 161 is opened, and the sixth control valve 114 can be closed. Heat is absorbed from the air source to the second heat exchanger 14 through the third heat exchanger 16, and the air conditioning circuit 41 operates to generate heat.

[0116] At this time, due to the need for hot water, the third control valve 32 is closed, the fourth control valve 33 is opened, and the second heating circuit operates to heat the water in the hot water tank 31. The fourth control valve 33, the fifth control valve 161, the seventh control valve I 441, and the seventh control valve II 451 can adjust the flow rate according to demand.

[0117] (8) The heat source does not cool or heat, the air conditioner is heating, and no hot water is provided

[0118] In this operating mode, the heat source 21 does not need to be cooled or heated, and the air conditioner, i.e., the heat exchange pipe, needs to be heated. The first liquid pump 24 is turned off, the first control valve 22 and the second control valve 23 can be closed, and the four-way valve 12 is switched so that the second heat exchanger 14 forms a condenser. The vapor compression unit 1 is in a heating cycle mode, the third heat exchanger 16 forms an evaporator, the fifth control valve 161 is opened, and the sixth control valve 114 can be closed. Heat is absorbed from the air source to the second heat exchanger 14 through the third heat exchanger 16, and the air conditioning circuit 41 operates to generate heat.

[0119] At this time, since hot water is not needed, the water pump 34 is turned off, and the third control valve 32 and the fourth control valve 33 can be closed. The fifth control valve 161, the seventh control valve I 441 and the seventh control valve II 451 can adjust the flow rate according to demand.

[0120] (9) Heat source does not cool or heat, air conditioning refrigeration, hot water supply mode

[0121] In this working mode, the heat source 21 does not need to be cooled or heated, and the air conditioner, i.e., the heat exchange pipe, needs to be refrigerated. The first control valve 22 and the second control valve 23 can be closed, and the four-way valve 12 is switched so that the second heat exchanger 14 forms an evaporator, and the vapor compression unit 1 is in the refrigeration cycle mode.

[0122] At this time, due to the need to provide hot water, the first heat exchanger 11 is formed into a condenser, the sixth control valve 114 is opened, the third control valve 32 is opened, and the fourth control valve 33 is closed. Heat is transferred from the first heat exchanger 11 to the second heat exchanger 14, and the first heating circuit works to heat the water in the hot water tank 31, and the air-conditioning circuit 41 works to cool the water; by opening the fifth control valve 161 and the third heat exchanger 16, auxiliary heat release can be performed to the air; the third control valve 32, the sixth control valve 114, the seventh control valve I441 and the seventh control valve II451 can adjust the flow rate according to demand.

[0123] (10) The heat source does not cool or heat, the air conditioner does not cool, and the hot water mode is not provided.

[0124] In this operating mode, the heat source 21 does not need to be cooled or heated, the air conditioner, i.e., the heat exchange pipe, needs to be refrigerated, the first liquid pump 24 is closed, the first control valve 22 and the second control valve 23 can be closed, the four-way valve 12 is switched so that the second heat exchanger 14 forms an evaporator, and the vapor compression unit 1 is in a refrigeration cycle mode;

[0125] At this point, since hot water is not needed, water pump 34 is turned off, and the first and second heating circuits are inoperative. Third heat exchanger 16 functions as a condenser, fifth control valve 161 is opened, and sixth control valve 114 can be closed. Heat is transferred from second heat exchanger 14 to third heat exchanger 16, where it is released to the air. Fifth control valve 161, seventh control valve I 441, and seventh control valve II 451 can adjust flow rates as needed.

[0126] (11) The heat source does not cool or heat, the air conditioner does not heat or cool, and hot water is provided.

[0127] In this working mode, the heat source 21 does not need to be cooled or heated, the air conditioner, i.e., the heat exchange pipe, does not need to be heated or cooled, the first liquid pump 24 is turned off, the second liquid pump 42 is turned off, and the first control valve 22, the second control valve 23, the seventh control valve I 441, and the seventh control valve II 451 can be closed;

[0128] At this time, due to the need to provide hot water, second heat exchanger 14 functions as a condenser, vapor compression unit 1 enters heating cycle mode, third heat exchanger 16 functions as an evaporator, fifth control valve 161 is opened, sixth control valve 114 can be closed, third control valve 32 is closed, and fourth control valve 33 is opened. Heat is absorbed from the air source through third heat exchanger 16 and transferred to second heat exchanger 14, allowing the second heating circuit to operate and heat the water in hot water tank 31. Fourth control valve 33 and fifth control valve 161 can adjust flow rates as needed.

[0129] (12) The heat source does not cool or heat, the air conditioner does not heat or cool, and the hot water mode is not provided

[0130] In this working mode, the heat source 21 does not need to be cooled or heated, the air conditioner, i.e., the heat exchange pipe, does not need to be cooled or heated, the first liquid pump 24 is turned off, and the first control valve 22, the second control valve 23, the seventh control valve I 441, and the seventh control valve II 451 can be closed;

[0131] At this time, since there is no need to provide hot water, the water pump 34 is turned off, and the third control valve 32, the fourth control valve 33, the fifth control valve 161, and the sixth control valve 114 can also be closed. In this working mode, each unit does not work, which is equivalent to the standby mode.

[0132] (13) Heat source heating, air conditioning heating, and hot water supply modes

[0133] In this operating mode, the heat source 21 needs to be heated, and the air conditioner, i.e., the heat exchange tube, needs to be heated. The four-way valve 12 is switched so that the second heat exchanger 14 forms a condenser, and the vapor compression unit 1 is in a heating cycle mode. The first control valve 22 is closed, the second control valve 23 is opened, the third heat exchanger 16 forms an evaporator, the fifth control valve 161 is opened, and the sixth control valve 114 can be closed. Heat is absorbed from the air source to the second heat exchanger 14 through the third heat exchanger 16, the second cooling circuit heats the heat source 21, and the air conditioning circuit 41 operates to provide heating.

[0134] At this time, due to the need for hot water, third control valve 32 is closed, fourth control valve 33 is opened, and the second heating circuit heats the water in hot water tank 31. Second control valve 23, fourth control valve 33, fifth control valve 161, seventh control valve I 441, and seventh control valve II 451 can adjust the flow rate as needed.

[0135] (14) Heat source heating, air conditioning heating, no hot water supply mode

[0136] In this operating mode, the heat source 21 needs to be heated, and the air conditioner, i.e., the heat exchange tube, needs to be heated. The four-way valve 12 is switched so that the second heat exchanger 14 forms a condenser, and the vapor compression unit 1 is in a heating cycle mode. The first control valve 22 is closed, the second control valve 23 is opened, the third heat exchanger 16 forms an evaporator, the fifth control valve 161 is opened, and the sixth control valve 114 can be closed. Heat is absorbed from the air source to the second heat exchanger 14 through the third heat exchanger 16, the second cooling circuit heats the heat source 21, and the air conditioning circuit 41 operates to provide heating.

[0137] At this time, since hot water is not needed, the water pump 34 is turned off, and the third control valve 32 and the fourth control valve 33 can be closed. The second control valve 23, the fifth control valve 161, the seventh control valve I 441 and the seventh control valve II 451 can adjust the flow rate according to demand.

[0138] (15) Heat source heating, air conditioning and cooling, hot water supply mode

[0139] In this operating mode, the heat source 21 needs to be heated, and the air conditioner, i.e., the heat exchange tube, needs to be cooled. The four-way valve 12 is switched so that the first heat exchanger 11 forms a condenser and the second heat exchanger 14 forms an evaporator. The vapor compression unit 1 is in the refrigeration cycle mode. The sixth control valve 114 is opened, the first control valve 22 is opened, and the second control valve 23 is closed. Heat is transferred from the second heat exchanger 14 to the first heat exchanger 11. The first cooling circuit operates to heat the heat source 21, and the air conditioning circuit 41 operates to cool.

[0140] At this time, due to the need for hot water, third control valve 32 is opened, fourth control valve 33 is closed, and the first heating circuit operates to heat the water in hot water tank 31. Auxiliary heat release is provided by opening fifth control valve 161 and third heat exchanger 16. The first control valve 22, third control valve 32, sixth control valve 114, seventh control valve I 441, and seventh control valve II 451 can adjust flow rates as needed.

[0141] (16) Heat source heating, air conditioning cooling, no hot water supply mode

[0142] In this operating mode, the heat source 21 needs to be heated, and the air conditioner, i.e., the heat exchange tube, needs to be cooled. The four-way valve 12 is switched so that the first heat exchanger 11 forms a condenser and the second heat exchanger 14 forms an evaporator. The vapor compression unit 1 is in the refrigeration cycle mode. The sixth control valve 114 is opened, the first control valve 22 is opened, and the second control valve 23 is closed. Heat is transferred from the second heat exchanger 14 to the first heat exchanger 11. The first cooling circuit operates to heat the heat source 21, and the air conditioning circuit 41 operates to cool.

[0143] Since hot water is not needed at this time, water pump 34 is turned off, and third and fourth control valves 32 and 33 can be closed. Auxiliary heat release can be achieved by opening fifth control valve 161 and third heat exchanger 16. First control valve 22, sixth control valve 114, seventh control valve I 441, and seventh control valve II 451 can adjust flow rates as needed.

[0144] (17) Heat source heating, air conditioning does not heat or cool, hot water supply mode

[0145] In this operating mode, the heat source 21 needs to be heated, and the air conditioner, i.e., the heat exchange tube, does not need to be heated or cooled. The second heat exchanger 14 is formed as a condenser, and the vapor compression unit 1 is in a heating cycle mode. The first control valve 22 is closed, the second control valve 23 is opened, the third heat exchanger 16 is formed as an evaporator, and the fifth control valve 161 is opened. Heat is absorbed from the air through the third heat exchanger 16 and transferred to the second heat exchanger 14. The second cooling circuit operates to heat the heat source 21. The second liquid pump 42 is closed, and the sixth control valve 114, the seventh control valve I 441, and the seventh control valve II 451 can be closed.

[0146] At this time, due to the need to provide hot water, the third control valve 32 is closed, the fourth control valve 33 is opened, and the second heating circuit works to heat the water in the hot water tank 31. The second control valve 23, the fourth control valve 33 and the fifth control valve 161 can adjust the flow rate according to demand.

[0147] (18) Heat source heating, air conditioning does not heat or cool, and does not provide hot water mode

[0148] In this operating mode, the heat source 21 needs to be heated, and the air conditioner, i.e., the heat exchange tube, does not need to be heated or cooled. The second heat exchanger 14 is formed as a condenser, and the vapor compression unit 1 is in a heating cycle mode. The first control valve 22 is closed, the second control valve 23 is opened, the third heat exchanger 16 is formed as an evaporator, and the fifth control valve 161 is opened. Heat is absorbed from the air through the third heat exchanger 16 and transferred to the second heat exchanger 14. The second cooling circuit operates to heat the heat source 21. The second liquid pump 42 is turned off, and the seventh control valve I 441 and the seventh control valve II 451 can be closed.

[0149] At this time, since hot water is not needed, the water pump 34 is turned off, and the third control valve 32 and the fourth control valve 33 can be closed. The second control valve 23 and the fifth control valve 161 can adjust the flow rate according to demand.

[0150] It can be seen that the thermal management system of this embodiment has multiple working modes, which can meet the diversified needs in actual working scenarios. In specific application scenarios, various working modes can be selected according to needs. For example, in the solar storage and charging application scenario, when the heat source 21 needs to be heated, it means that the ambient temperature is low, and the air conditioner does not need to be cooled at this time. Therefore, in the solar storage and charging application scenario, the heat source heating, air conditioning cooling, and hot water supply mode, i.e., the above-mentioned working mode (15) and the heat source heating, air conditioning cooling, and no hot water supply mode, i.e., the above-mentioned working mode (16), are generally not used. These working modes can be used in other application scenarios, such as application scenarios when the low temperature threshold of the heat source 21 is high.

[0151] From the above content, it can be seen that the thermal management system for integrated energy equipment provided in this embodiment can recycle the heat generated by the heat source when cooling the heat source to provide domestic hot water and air-conditioning heat energy. Moreover, the thermal management system has multiple working modes and can meet the diverse needs in actual working scenarios.

[0152] Example 2:

[0153] As shown in Figures 6-7, this embodiment provides a thermal management system for integrated energy devices. Compared with the first embodiment, the third heat exchanger 16, the fifth control valve 161, and the sixth control valve 114 are not used in the steam compression unit 1. The thermal management system of this embodiment also has several operating modes, specifically heat source cooling, air conditioning heating, and hot water supply mode; heat source cooling, air conditioning heating, no hot water supply mode; heat source cooling, air conditioning cooling, and hot water supply mode; heat source cooling, air conditioning neither heating nor cooling, and hot water supply mode; heat source neither cooling nor heating, air conditioning neither heating nor cooling, and hot water supply mode; heat source heating, air conditioning cooling, and hot water supply mode; heat source heating, air conditioning cooling, and hot water supply mode; heat source heating, air conditioning cooling, and no hot water supply mode. These operating modes can be implemented in accordance with the first embodiment, with the only difference being that the third heat exchanger 16 is not involved in the operation in this embodiment. The thermal management system of this embodiment also has several operating modes, which can meet diverse operating needs to a certain extent.

[0154] In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly defined.

[0155] In the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0156] The execution order of the steps shown in the flowchart is a preferred implementation mode. In other embodiments of the present invention, the steps may be adjusted according to the functions involved in the steps, for example, they may be executed simultaneously or in the reverse order.

[0157] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

Claims

1. A thermal management system for integrated energy equipment, characterized in that: include: A steam compression unit (1), the steam compression unit (1) comprising a first heat exchanger (11), a four-way valve (12), a compressor (13), a second heat exchanger (14) and an expansion valve (15); A heat source cooling unit (2), the heat source cooling unit (2) comprising a heat source (21), a first control valve (22) and a second control valve (23), the first control valve (22) being arranged in a first cooling branch (221) connected to the first heat exchanger (11) and performing heat exchange, the second control valve (23) being arranged in a second cooling branch (231) connected to the second heat exchanger (14) and performing heat exchange, the first cooling branch (221) and the second cooling branch (231) being arranged in parallel, the heat source (21) and the first cooling branch (221) forming a first cooling circuit, and the heat source (21) and the second cooling branch (231) forming a second cooling circuit; A hot water recovery unit (3), the hot water recovery unit (3) comprising a hot water tank (31), a third control valve (32) and a fourth control valve (33), the third control valve (32) being arranged in a first heating branch (321) communicating with the first heat exchanger (11) and performing heat exchange, the fourth control valve (33) being arranged in a second heating branch (331) communicating with the second heat exchanger (14) and performing heat exchange, the first heating branch (321) and the second heating branch (331) being arranged in parallel, the hot water tank (31) and the first heating branch (321) forming a first heating circuit, and the hot water tank (31) and the second heating branch (331) forming a second heating circuit; A heat recovery air conditioning unit (4), the heat recovery air conditioning unit (4) comprising a heat exchange pipe, the heat exchange pipe being arranged in an air conditioning circuit (41) which is connected to the second heat exchanger (14) and performs heat exchange.

2. The thermal management system for integrated energy equipment according to claim 1, characterized in that: The steam compression unit (1) further comprises a third heat exchanger (16), the third heat exchanger (16) being an air heat exchanger, the third heat exchanger (16) being arranged in parallel with the first heat exchanger (11), a fifth control valve (161) being provided on the parallel branch where the third heat exchanger (16) is located, and a sixth control valve (114) being provided on the parallel branch where the first heat exchanger (11) is located.

3. The thermal management system for integrated energy equipment according to claim 2, characterized in that: The heat source (21) is a heat generating component in the solar storage and charging system.

4. The thermal management system for integrated energy equipment according to claim 2 or 3, characterized in that: The air conditioning circuit (41) of the heat recovery air conditioning unit (4) further comprises a seventh control valve; the first control valve (22), the second control valve (23), the third control valve (32), the fourth control valve (33), the fifth control valve (161), the sixth control valve (114), and the seventh control valve are all flow control valves.

5. The thermal management system for integrated energy equipment according to claim 1, characterized in that: The heat source cooling unit (2) further comprises a first liquid pump (24) and a cold liquid tank (25), wherein the first liquid pump (24) is used to drive the first coolant in the cold liquid tank (25) to circulate in the first cooling circuit or the second cooling circuit; the heat recovery air conditioning unit (4) further comprises a second liquid pump (42) and a buffer tank (43), wherein the second liquid pump (42) is used to drive the second coolant in the buffer tank (43) to circulate in the air conditioning circuit (41); the hot water recovery unit (3) further comprises a water pump (34), wherein the water pump (34) is used to drive water to circulate in the first heating circuit or the second heating circuit.

6. The thermal management system for integrated energy equipment according to claim 1, characterized in that: The hot water tank (31) is provided with a water outlet (311) and a water replenishment port (312); the hot water tank (31) is also provided with a float valve (313), the float valve (313) is connected to the water replenishment port (312), and when the water level in the hot water tank (31) is lower than a set water level, the float valve (313) opens to replenish tap water into the hot water tank (31); the hot water tank (31) also includes a temperature sensor (314), a solenoid valve (315), an overflow port (316), and a flow control port (317). 16) and an electric heater (317), when the temperature sensor (314) detects that the water temperature in the hot water tank (31) exceeds a set temperature upper limit, the solenoid valve (315) opens, the water replenishment port (312) forcibly replenishes tap water into the hot water tank (31), and excess water flows out from the overflow port (316), and when the temperature sensor (314) detects that the water temperature in the hot water tank (31) is lower than a set temperature lower limit, the electric heater (317) performs auxiliary heating.

7. A method for operating a thermal management system for integrated energy equipment as claimed in claim 1, characterized in that: The following steps are involved: Receiving a first demand instruction for controlling the operation of the heat source cooling unit (2); Receiving a second demand instruction for controlling the operation of the heat recovery air conditioning unit (4); receiving a third demand instruction for controlling the operation of the hot water recovery unit (3); The thermal management system is controlled to operate according to the first demand instruction, the second demand instruction and the third demand instruction.

8. The method for operating a thermal management system for integrated energy equipment according to claim 7, characterized in that: A temperature measuring device is provided at the heat source (21) of the heat source cooling unit (2), and the temperature measuring device sends the first demand instruction according to the detected temperature.

9. The working method of the thermal management system of the integrated energy device according to claim 7 or 8, characterized in that: The thermal management system can work in the heat source cooling, air conditioning heating, hot water supply mode according to demand; heat source cooling, air conditioning heating, no hot water supply mode; heat source cooling, air conditioning refrigeration, hot water supply mode; heat source cooling, air conditioning neither heating nor refrigeration, hot water supply mode; The heat source does not cool or heat, the air conditioner cools, and provides hot water mode; The heat source does not cool or heat, the air conditioner does not heat or refrigerate, and no hot water mode is provided; the heat source heats, the air conditioner cools, and hot water mode is provided; the heat source heats, the air conditioner cools, and no hot water mode is provided.

10. The working method of the thermal management system of the integrated energy equipment according to claim 7 or 8, characterized in that: The steam compression unit (1) further comprises a third heat exchanger (16), the third heat exchanger (16) being an air heat exchanger, the third heat exchanger (16) being arranged in parallel with the first heat exchanger (11), a fifth control valve (161) being arranged on the parallel branch where the third heat exchanger (16) is located, and a sixth control valve (114) being arranged on the parallel branch where the first heat exchanger (11) is located; The thermal management system can work in the heat source cooling, air conditioning heating, and hot water supply mode according to demand; heat source cooling, air conditioning heating, and no hot water supply mode; heat source cooling, air conditioning refrigeration, and hot water supply mode; heat source cooling, air conditioning refrigeration, and no hot water supply mode; heat source cooling, air conditioning neither heating nor refrigeration, and hot water supply mode; heat source cooling, air conditioning neither heating nor refrigeration, and no hot water supply mode; heat source neither cooling nor heating, air conditioning heating, and hot water supply mode; The heat source does not cool or heat, the air conditioner heats, and no hot water is provided; the heat source does not cool or heat, the air conditioner cools, and hot water is provided; The heat source does not cool or heat, the air conditioner does not cool, and no hot water is provided; the heat source does not cool or heat, the air conditioner does not heat or cool, and hot water is provided; The heat source does not cool or heat, the air conditioner does not heat or refrigerate, and no hot water is provided; the heat source heats, the air conditioner heats, and provides hot water; the heat source heats, the air conditioner heats, and does not provide hot water; the heat source heats, the air conditioner cools, and provides hot water; the heat source heats, the air conditioner cools, and does not provide hot water; the heat source heats, the air conditioner does not heat or cool, and provides hot water; the heat source heats, the air conditioner does not heat or cool, and does not provide hot water.

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