A thermal management system for integrated energy devices and method of operation thereof

Abstract

The present application relates to the technical field of energy management, in particular to a heat management system of integrated energy equipment and a working method thereof, the heat management system of integrated energy equipment comprises a vapor compression unit, a heat source cooling unit, a hot water recovery unit and a heat-recoverable air conditioning unit, the vapor 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 heat-recoverable air conditioning unit comprises a heat exchange pipe, the heat management system of integrated energy equipment can recycle the heat generated by the heat source when cooling the heat source, and the heat management system has multiple working modes and can meet diversified needs in actual working scenarios.

Description

Technical Field

[0001] This invention relates to the field of energy management technology, specifically to a thermal management system integrating energy equipment and its operating method. Background Technology

[0002] The equipment used for photovoltaic energy storage charging and discharging, as well as related equipment for testing and inspection, generates a large amount of heat during operation, requiring cooling of high-temperature components. The traditional cooling method is air cooling, which uses fans to carry away the heat and release it into the atmosphere. However, this method has problems such as poor heat dissipation, high energy consumption, high cost, high noise, unusable heat emissions, and environmental pollution.

[0003] A patent application with publication number CN115866983A, entitled "Cooling System and Control Method for Charging System," discloses a cooling system that uses refrigerant to cool the heat-generating power module at the evaporator. The heat absorbed by the refrigerant is released to the outside at the condenser. This liquid cooling method provides good heat dissipation, but the heat is still released into the atmosphere, resulting in unusable thermal energy and environmental pollution. Furthermore, existing cooling systems have limited functionality; for example, they can only cool the heat-generating power module and cannot meet the needs of domestic hot water and indoor cooling / heating. Summary of the Invention

[0004] To address the technical problems of existing cooling systems being unable to recover and utilize heat energy and having limited functionality to meet diverse needs, this invention provides a thermal management system that integrates energy equipment. This system can recover heat energy and also meet diverse needs such as domestic hot water and indoor cooling / heating.

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

[0006] A thermal management system integrating 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 includes a heat source, a first control valve, and a second control valve. The first control valve is disposed in a first cooling branch that communicates with and exchanges heat with the first heat exchanger, and the second control valve is disposed in a second cooling branch that communicates with and exchanges heat with the second heat exchanger. The first cooling branch and the second cooling branch are arranged in parallel. The heat source and the first cooling branch form a first cooling circuit, and the heat source and the second cooling branch form a second cooling circuit.

[0009] A hot water recovery unit includes a hot water tank, a third control valve, and a fourth control valve. The third control valve is located in a first heating branch that communicates with and exchanges heat with the first heat exchanger, and the fourth control valve is located in a second heating branch that communicates with and exchanges heat with the second heat exchanger. The first heating branch and the second heating branch are connected in parallel. The hot water tank and the first heating branch form a first heating circuit, and the hot water tank and the second heating branch form a second heating circuit.

[0010] A heat recovery air conditioning unit, the heat recovery air conditioning unit including a heat exchange tube, the heat exchange tube being arranged in an air conditioning circuit that is connected to and exchanges heat with a second heat exchanger.

[0011] Furthermore,

[0012] The steam compression unit also includes a third heat exchanger, which is an air heat exchanger. The third heat exchanger is connected 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] Furthermore,

[0014] The heat source is a heating component in the photovoltaic energy storage and charging system.

[0015] Furthermore,

[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] Furthermore,

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

[0019] Furthermore,

[0020] The hot water tank is equipped with an outlet and a filler inlet. A float valve is also installed inside the tank, connected to the filler inlet. When the water level in the tank is lower than a set level, the float valve opens to add tap water. The hot water tank also includes a temperature sensor, a solenoid valve, an overflow outlet, and an electric heater. When the temperature sensor detects that the water temperature in the tank exceeds the set upper temperature limit, the solenoid valve opens, and the filler inlet forces tap water into the tank. Excess water flows out from the overflow outlet. When the temperature sensor detects that the water temperature in the tank is lower than the set lower temperature limit, the electric heater provides auxiliary heating.

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

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

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

[0024] Receive a third demand command 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] Furthermore,

[0027] The heat source cooling unit is equipped with a temperature measuring device at the heat source, and the temperature measuring device sends the first demand command according to the detected temperature.

[0028] Optionally,

[0029] The thermal management system can operate as follows: heat source cooling, air conditioning heating, and hot water supply; heat source cooling, air conditioning heating, and no hot water supply; heat source cooling, air conditioning cooling, and hot water supply; heat source cooling, air conditioning neither heating nor cooling, and hot water supply; heat source neither cooling nor heating, air conditioning cooling, and hot water supply; heat source neither cooling nor heating, air conditioning neither heating nor cooling, and no hot water supply; heat source heating, air conditioning cooling, and hot water supply; heat source heating, air conditioning cooling, and no hot water supply.

[0030] Optionally,

[0031] The vapor compression unit also includes a third heat exchanger, which is an air heat exchanger. The third heat exchanger is connected 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 operate as follows: heat source cooling, air conditioning heating, and hot water supply; heat source cooling, air conditioning heating, and no hot water supply; heat source cooling, air conditioning cooling, and hot water supply; heat source cooling, air conditioning cooling, and no hot water supply; heat source cooling, air conditioning neither heating nor cooling, and hot water supply; heat source neither cooling nor heating, air conditioning heating, and hot water supply; heat source neither cooling nor heating, air conditioning heating, and hot water supply; heat source neither cooling nor heating, air conditioning cooling, and hot water supply. Water mode; Heat source neither cools nor heats, air conditioner cools, no hot water provided; Heat source neither cools nor heats, air conditioner neither heats nor cools, hot water provided; Heat source neither cools nor heats, air conditioner neither heats nor cools, no hot water provided; Heat source heats, air conditioner heats, hot water provided; Heat source heats, air conditioner heats, no hot water provided; Heat source heats, air conditioner cools, hot water provided; Heat source heats, air conditioner neither heats nor cools, hot water provided; Heat source heats, air conditioner neither heats nor cools, hot water provided;

[0033] The beneficial effects of this invention are:

[0034] 1. The present invention provides a thermal management system for integrated energy equipment, which can recover and reuse the heat generated by the heat source when cooling the heat source for domestic hot water and air conditioning heating, thereby reducing heat emissions to the environment, protecting the environment and saving energy, and realizing the production of clean energy.

[0035] 2. The thermal management system for integrated energy equipment provided by the present invention 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 can also realize cooling / heating, domestic hot water use, etc. when the heat source cooling unit does not cool the heat source.

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

[0037] 4. The thermal management system for integrated energy equipment provided by this invention allows each unit to be connected only through pipe joints, without using the traditional fan cooling method, which facilitates production, installation, and later maintenance. In addition, it has low noise, high protection level, and 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. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the thermal management system of the integrated energy equipment in Example 1.

[0040] Figure 2 This is a schematic diagram of the vapor compression unit in Example 1;

[0041] Figure 3 This is a schematic diagram of the heat source cooling unit in Embodiment 1;

[0042] Figure 4 This is a schematic diagram of the hot water recovery unit in Example 1;

[0043] Figure 5 This is a schematic diagram of the heat recovery air conditioning unit in Example 1;

[0044] Figure 6 This is a schematic diagram of the overall structure of the thermal management system of the integrated energy equipment in Example 2;

[0045] Figure 7 This is a schematic diagram of the steam compression unit in Example 2.

[0046] in,

[0047] Vapor compression unit 1, first heat exchanger 11, first refrigerant channel 111, first cooling channel 112, first heating channel 113, sixth control valve 114, four-way valve 12, compressor 13, second heat exchanger 14, second refrigerant channel 141, second cooling channel 142, second heating channel 143, air conditioning 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 inlet 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, radiant coil 44, seventh control valve I 441, fan coil unit 45, seventh control valve II 451, second fan 452. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1:

[0052] like Figure 1-5 As shown, this embodiment provides a thermal management system for integrated energy equipment. The thermal management system 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.

[0053] The vapor 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 ports C, D, E, and S. The first heat exchanger 11 includes a first refrigerant flow path 111, and the second heat exchanger 14 includes a second refrigerant flow path 141. When the first heat exchanger 11 needs to act as an evaporator and the second heat exchanger 14 needs to act as a condenser, the four-way valve 12 switches to connect ports E and S, and ports C and D, allowing the refrigerant to flow along... The refrigerant circulates counterclockwise through the first heat exchanger 11, port E, port S, compressor 13, port D, port 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 switches to connect ports C and S and ports D and E, and the refrigerant circulates clockwise through the second heat exchanger 14, port C, port S, compressor 13, port D, port 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 pipe to form a first cooling branch 221. The first cooling branch 221 exchanges heat 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 pipe to form a second cooling branch 231. The second cooling branch 231 exchanges heat with the second refrigerant channel 141 through the second cooling channel 142. The first cooling branch 221 and the second cooling branch 231 are connected in parallel. 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 turned on, the first cooling circuit is working, which allows the heat source 21 to exchange heat with the first heat exchanger 11. When the second control valve 23 is turned on, the second cooling circuit is working, which allows the heat source 21 to 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 exchanges heat 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 exchanges heat with the second refrigerant channel 141 through the second heating channel 143. The first heating branch 321 and the second heating branch 331 are connected in parallel. The hot water tank 31 is used to provide domestic hot water for bathing. The hot water tank 31 is connected to the first heating branch 321 to form a first heating circuit. 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 turned on, the first heating circuit is activated, which allows the hot water tank 31 to exchange heat with the first heat exchanger 11. When the fourth control valve 33 is turned on, the second heating circuit is activated, which allows the hot water tank 31 to exchange heat with the second heat exchanger 14.

[0056] The heat recovery air conditioning unit 4 includes heat exchange tubes, which can be, but are not limited to, radiant coils 44.

[0057] Fan coil units 45, etc., are used 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 through pipes to form an air conditioning circuit 41. When the air conditioning circuit 41 is working, heat exchange occurs between the air conditioning flow channel 144 and the second refrigerant flow channel 141.

[0058] Thus, the thermal management system for integrated energy equipment provided in this embodiment cools the heat source 21 in the heat source cooling unit 2 by liquid cooling when it generates heat, achieving good cooling effect. Furthermore, the heat can be transferred to the hot water tank 31 of the hot water recovery unit 3 via the vapor compression unit 1 to provide domestic hot water, or transferred to the heat exchange tubes of the heat recovery air conditioning unit 4 to provide indoor heating. This achieves heat energy recovery and utilization, reduces heat emissions, and is environmentally friendly and energy-saving. In addition to cooling and heat recovery when the heat source 21 generates heat, the thermal management system provided in this embodiment also has various other functions to meet diverse needs in practical application scenarios.

[0059] like Figure 1 and Figure 2 As shown, the vapor compression unit 1 also includes a third heat exchanger 16, which is an air heat exchanger, optionally but not limited to a tube-fin heat exchanger, etc. It includes a third refrigerant flow channel and is equipped with a first fan 162 to achieve forced convection of the air channel, so as to realize heat exchange between the third heat exchanger 16 and the air source. The third heat exchanger 16 is connected 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 is working; when the sixth control valve 114 is switched on, the first heat exchanger 11 is working.

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

[0061] The number of first heat exchangers 11 is preferably one, integrating the first refrigerant channel 111, the first cooling channel 112 and the first heating channel 113 into one first heat exchanger 11. Alternatively, multiple independent first heat exchangers 11 can be provided for heat exchange. For example, two first heat exchangers 11 can be provided, with the first cooling channel 112 and the first heating channel 113 respectively for heat exchange. Similarly, the number of second heat exchangers 14 is preferably one, integrating the second refrigerant channel 141, the second cooling channel 142, the second heating channel 143, and the air conditioning channel 144 into one second heat exchanger 14. Alternatively, multiple independent second heat exchangers 14 can be provided for heat exchange. For example, three second heat exchangers 14 can be provided, with the three first heat exchangers 11 respectively providing the second cooling channel 142, the second heating channel 143, and the air conditioning channel 144 for heat exchange. Alternatively, two second heat exchangers 14 can be provided, with one second heat exchanger 14 providing two of the second cooling channel 142, the second heating channel 143, and the air conditioning channel 144, and the other second heat exchanger 14 providing the remaining third type.

[0062] The vapor compression unit 1 can be divided into two modes: heating cycle and refrigeration cycle. The heating cycle mode refers to the second heat exchanger 14 heating the condenser; the refrigeration cycle mode refers to the second heat exchanger 14 cooling 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 flows through port E of the four-way valve 12 and then through port S. It is then drawn into the compressor 13 to do work and is compressed into a high-temperature refrigerant. The high-temperature refrigerant flows through 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. Then, after being throttled by the expansion valve 15, it 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, thus 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 are condensers. The low-temperature refrigerant in the second heat exchanger 14 flows through port C of the four-way valve 12 and then through port S, and is then drawn into the compressor 13 to do work, compressing it into a high-temperature refrigerant. The high-temperature refrigerant flows through ports 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, becoming a medium-temperature refrigerant. Then, after being throttled by the expansion valve 15, it 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] Both the fifth control valve 161 and the sixth control valve 114 are flow control valves, which can be used to regulate the refrigerant flow.

[0066] like Figure 1 and Figure 3 As shown, the heat source cooling unit 2 also includes a first liquid pump 24 and a cold liquid tank 25. The cold liquid tank 25 contains a first coolant, which may be, but is not limited to, an aqueous solution of ethylene glycol. 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 through the heat source 21, it becomes a medium-temperature fluid and enters the vapor compression unit 1. It exchanges heat with the low-temperature refrigerant at the first heat exchanger 11 or the second heat exchanger 14 in the vapor compression unit 1. After releasing heat, it becomes a low-temperature fluid and flows back 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, they are connected in parallel.

[0068] Preferably, the thermal management system of this embodiment can be optionally, but is not limited to, being applied in a photovoltaic-storage-charging system to form a photovoltaic-storage-charging thermal system. This system dissipates heat from heat-generating components such as the energy storage system and the charging system. Multiple heat dissipation components are connected in parallel. Specifically, the photovoltaic-storage-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 power distribution system. The energy storage system discharges to the power distribution system during peak hours and draws power from the power distribution system during off-peak hours. The charging piles also draw power from the power distribution system to charge charging devices such as vehicles. Multiple charging and discharging processes occur in the photovoltaic-storage-charging system, generating a large amount of heat. By connecting the energy storage system and charging piles in parallel and cooling them with liquid cooling, heat exchange efficiency is improved, meeting the heat dissipation requirements of high-power charging and ensuring the efficient and stable operation of the photovoltaic-storage-charging system.

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

[0070] In some cases, such as in a photovoltaic energy 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. In this case, the thermal management system of this embodiment can also heat these heat sources 21. When the vapor compression unit 1 is in 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. The low-temperature fluid is input into the second heat exchanger 14 through the second control valve 23 and exchanges heat 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. Then it is heated by the heat source 21 to form a closed loop. When the vapor compression unit 1 is in refrigeration cycle mode, the second heat exchanger 14 functions as an evaporator, and the first heat exchanger 11 functions as 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, which inputs the low-temperature fluid through the first control valve 22 into the first heat exchanger 11. There, the fluid exchanges heat with the high-temperature refrigerant in the first heat exchanger 11, absorbing heat and becoming a medium-temperature fluid that flows into the cold liquid tank 25. It then passes through the heat source 21 for heating, forming a closed loop. Similarly, whether the heat source 21 needs heating can be detected by a temperature measuring device. For example, if the measured temperature is below the low-temperature threshold (e.g., 0°C), it indicates that the heat source 21 needs heating; if the measured temperature is above the low-temperature threshold, it indicates that the heat source 21 does not need heating.

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

[0072] like Figure 1 and Figure 4 As shown, 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 vapor compression unit 1. After absorbing heat, it becomes hot water and then flows into the hot water tank 31 to form a closed heating cycle.

[0073] In this embodiment, the hot water tank 31 is provided with an outlet 311 and a water inlet 312. The outlet 311 is used to release hot water, and the water inlet 312 is used to replenish cold water, i.e., tap water. The hot water tank 31 is also provided with a float valve 313, which is connected to the water inlet 312. When the hot water is used until 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 the set upper temperature limit (such as a suitable domestic hot water temperature of 40℃), the solenoid valve 315 opens, and the water inlet 312 forces tap water into the hot water tank 31 to control the temperature. Excess water flows out from the overflow port 316, ensuring that there is enough space in the hot water tank 31 to replenish tap water to absorb heat, ensuring that the water level remains in a safe state under special circumstances and can work normally. The solenoid valve 315 and the float valve 313 are set in parallel, that is, they are each connected to the water inlet 312 separately, so as to ensure that water can be replenished when there is a shortage of water or the water temperature is too high, 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 limit (such as a suitable domestic hot water temperature of 40℃, or a temperature of 0℃, which may cause freezing), the electric heater 317 provides auxiliary heating, thereby ensuring that there is always a supply of hot water at the outlet 311 when hot water is needed; and ensuring that it will not freeze in the cold winter to avoid damage to the equipment.

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

[0076] When the vapor compression unit 1 is in heating cycle mode, the second heat exchanger 14 acts as a condenser. If hot water is needed, 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 by the water pump 34, flows through the fourth control valve 33, and then back through the second heat exchanger 14. After absorbing heat, it becomes hot water and flows back into the hot water tank 31, completing a closed heat exchange cycle. If hot water is not needed, the second heating circuit does not work, and the water pump 34 does not work. When the vapor compression unit 1 is in cooling cycle mode, the second heat exchanger 14 acts as an evaporator. If hot water is needed, the first heat exchanger 11 acts 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 by the water pump 34, flows through the third control valve 32, and then back through the first heat exchanger 11. After absorbing heat, it becomes hot water and flows back into the hot water tank 31, completing a closed heat exchange cycle. If hot water is not needed, the first heating circuit does not work, and the water pump 34 does not work.

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

[0078] like Figure 1 and Figure 5As shown, the heat recovery air conditioning unit 4 also includes a second liquid pump 42 and a buffer tank 43. The buffer tank 43 is filled with a second coolant, 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 exchanges heat with the second heat exchanger 14 in the vapor 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, they are preferably connected in parallel.

[0080] In this embodiment, there are two heat exchange tubes: a radiant coil 44 and a fan coil unit 45. The radiant coil 44 primarily uses underfloor heating or capillary radiation, transferring energy to the surroundings through radiation. The fan coil unit 45 consists of a finned tube heat exchanger and a second fan 452, transferring energy to the surroundings through convection heat exchange. A seventh control valve is also provided in the air conditioning circuit 41, specifically including a seventh control valve I 441 and a seventh control valve II 451. The seventh control valve I 441 is located on the parallel branch where the radiant coil 44 is located, and the seventh control valve II 451 is located on the parallel branch where the fan coil unit 45 is located.

[0081] When the vapor compression unit 1 is in 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. Opening the seventh control valve I 441 allows the high-temperature fluid to transfer heat to the surroundings via radiation through the radiant coil 44. Opening the seventh control valve II 451 allows the high-temperature fluid to transfer heat to the surroundings via convection through the fan coil unit 45, ultimately achieving the heating requirement. When the vapor compression unit 1 is in cooling cycle mode, the second heat exchanger 14 provides a cold source to the evaporator. The second coolant releases heat at the second heat exchanger 14 to form a low-temperature fluid. Opening the seventh control valve I 441 allows the low-temperature fluid to transfer cooling capacity to the surroundings via radiation through the radiant coil 44. Opening the seventh control valve II 451 allows the low-temperature fluid to transfer cooling capacity to the surroundings via convection through the fan coil unit 45, ultimately achieving the cooling requirement.

[0082] Both the seventh control valve I 441 and the seventh control valve II 451 are flow control valves. The coolant flow rate can be adjusted at the radiant coil 44 through the seventh control valve I 441, and the coolant flow rate can be adjusted at the fan coil 45 through the seventh control valve II 451.

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

[0084] Receive the first demand command for controlling the operation of the heat source cooling unit 2;

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

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

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

[0088] For the heat source cooling unit 2, there are three scenarios: cooling is required, heating is required, and neither cooling nor heating is required. For example, when the temperature of the heat source 21 exceeds the high-temperature threshold (e.g., 25°C), cooling is required; when the temperature of the heat source 21 is below the low-temperature threshold (e.g., 0°C), heating is required; and when the temperature of the heat source 21 is between the low-temperature and high-temperature thresholds, neither cooling nor heating is required. Temperature can be detected at the heat source 21 using a temperature measuring device, and the first demand command can be automatically sent to the controller based on the detected temperature. The controller can automatically control the operation of the vapor compression unit 1 to maintain the temperature of the heat source 21 within a suitable operating temperature range.

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

[0090] For hot water recovery unit 3, there are two scenarios: hot water needs to be provided and hot water does not need to be provided. For example, in cold seasons, when the tap water temperature cannot meet the usage requirements, hot water needs to be provided; in hot seasons, when the tap water temperature can meet the usage requirements or to save energy, hot water does not need to be provided. The third demand command can be sent manually by the operator, or it can be automatically selected by detecting the ambient temperature and comparing it with a set threshold, and then sending the corresponding third demand command to the controller.

[0091] For each of the various conditions of the heat source cooling unit 2, the heat recovery air conditioning unit 4 has three possible configurations; and for each of the various conditions of the heat recovery air conditioning unit 4, the hot water recovery unit 3 has two possible configurations. Table 1 below lists the various demand scenarios.

[0092] Table 1

[0093]

[0094] According to Table 1, the thermal management system of this embodiment can achieve the following working modes as needed:

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

[0096] In this working mode, heat source 21 needs to be cooled, and the air conditioner, i.e., the heat exchange tube, needs to heat. The four-way valve 12 switches so that the first heat exchanger 11 becomes an evaporator, the sixth control valve 114 opens, and the second heat exchanger 14 becomes a condenser. The vapor compression unit 1 is in heating cycle mode, the first control valve 22 opens, the second control valve 23 closes, the first cooling circuit works to cool heat source 21, and the heat from heat source 21 is transferred from the first heat exchanger 11 to the second heat exchanger 14. The air conditioning circuit 41 works to heat.

[0097] At this time, because hot water is needed, the third control valve 32 is closed and the fourth control valve 33 is opened, and the second heating circuit operates to heat the water in the hot water tank 31. When the recovered heat cannot meet the heating and hot water needs of the air conditioner, auxiliary heating can be provided 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% according to demand 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, the sixth control valve 114, the seventh control valve I 441, and the seventh control valve II 451 can be adjusted according to demand.

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

[0099] In this working mode, heat source 21 needs to be cooled, and the air conditioner, i.e., the heat exchange tube, needs to heat. The four-way valve 12 switches so that the first heat exchanger 11 becomes an evaporator, the sixth control valve 114 opens, and the second heat exchanger 14 becomes a condenser. The vapor compression unit 1 is in heating cycle mode, the first control valve 22 opens, the second control valve 23 closes, the first cooling circuit works to cool heat source 21, and the heat from heat source 21 is transferred from the first heat exchanger 11 to the second heat exchanger 14. The air conditioning circuit 41 works to heat.

[0100] At this time, since hot water is not required, both the first and second heating circuits are inactive, water pump 34 is shut off, and the third control valve 32 and the fourth control valve 33 can be closed. When the recovered heat cannot meet the heating demand of the air conditioner, auxiliary heating can be provided 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% according to demand 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 sixth control valve 114, the seventh control valve I 441, and the seventh control valve II 451 can be adjusted according to demand.

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

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

[0103] At this time, since hot water is needed, the first heat exchanger 11 is converted into a condenser, the sixth control valve 114 is opened, and the heat from the heat source 21 and the air conditioner 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 is activated 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 can be released, assisting in the discharge of heat 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 be adjusted according to demand.

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

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

[0106] At this time, since hot water is not required, both the first and second heating circuits are not operating, water pump 34 is shut off, and the third control valve 32 and the fourth control valve 33 can be closed. At this time, the third heat exchanger 16 functions as a condenser, the fifth control valve 161 is open, and the sixth control valve 114 can be closed. Heat from heat source 21 and the air conditioner is transferred from the second heat exchanger 14 to the third heat exchanger 16 and discharged into the air. The second control valve 23, the fifth control valve 161, the seventh control valve I 441, and the seventh control valve II 451 can be used to adjust the flow rate as needed.

[0107] (5) Heat source cooling, air conditioner neither heating nor cooling, hot water supply mode

[0108] In this working mode, heat source 21 needs to be cooled, the air conditioner i.e. heat exchanger tube does not need to heat or cool, the air conditioner circuit 41 does not work, the second liquid pump 42 is closed, 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 for hot water, the four-way valve 12 switches, causing the first heat exchanger 11 to become an evaporator, the sixth control valve 114 to open, and the second heat exchanger 14 to become a condenser, with the vapor compression unit 1 in heating cycle mode; the first control valve 22 opens, the second control valve 23 closes, the first cooling circuit operates to cool the heat source 21, and the heat from the heat source 21 is transferred from the first heat exchanger 11 to the second heat exchanger 14; the third control valve 32 closes, the fourth control valve 33 opens, and the second heating circuit operates to heat the water in the hot water tank 31; when heat recovery cannot meet the hot water demand, auxiliary heating can be provided 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 be adjusted according to demand;

[0110] Alternatively, the four-way valve 12 can be switched so that the first heat exchanger 11 becomes a condenser, the sixth control valve 114 opens, the second heat exchanger 14 becomes an evaporator, the vapor compression unit 1 is in refrigeration cycle mode, the first control valve 22 is closed, the second control valve 23 is open, the second cooling circuit operates to cool the heat source 21, and the heat from the heat source 21 is transferred 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 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 can be released to assist in the discharge of heat into the air. The flow rates of the second control valve 23, the third control valve 32, and the sixth control valve 114 can be adjusted as needed.

[0111] (6) Heat source cooling, air conditioner not heating or cooling, and no hot water provided mode

[0112] In this working mode, heat source 21 needs to be cooled, the air conditioner i.e. heat exchanger tube does not need to heat or cool, the air conditioner circuit 41 does not work, the second liquid pump 42 is closed, 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 required, water pump 34 is turned off, third control valve 32 and fourth control valve 33 can be closed, four-way valve 12 switches so that second heat exchanger 14 becomes a condenser, steam compression unit 1 is in heating cycle mode, third heat exchanger 16 becomes an evaporator, fifth control valve 161 is opened, sixth control valve 114 can be closed, first control valve 22 is closed, second control valve 23 is opened, second cooling circuit works to cool heat source 21, and heat is discharged into the air through third heat exchanger 16; second control valve 23 and fifth control valve 161 can adjust the flow rate according to demand.

[0114] (7) Heat source neither cooling nor heating, air conditioning heating, hot water supply mode

[0115] In this working mode, heat source 21 does not need cooling or heating, while the air conditioner, i.e., the heat exchanger tube, needs to generate heat. The first liquid pump 24 is closed, and the first control valve 22 and the second control valve 23 can be closed. The four-way valve 12 switches so that the second heat exchanger 14 becomes a condenser, the vapor compression unit 1 is in heating cycle mode, the third heat exchanger 16 becomes an evaporator, the fifth control valve 161 is open, 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 works to generate heat.

[0116] At this time, because hot water is needed, the third control valve 32 is closed and 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) Heat source neither cooling nor heating, air conditioning heating, no hot water provided mode

[0118] In this working mode, heat source 21 does not need cooling or heating, while the air conditioner, i.e., the heat exchanger tube, needs to generate heat. The first liquid pump 24 is closed, and the first control valve 22 and the second control valve 23 can be closed. The four-way valve 12 switches so that the second heat exchanger 14 becomes a condenser, the vapor compression unit 1 is in heating cycle mode, the third heat exchanger 16 becomes an evaporator, the fifth control valve 161 is open, 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 works to generate heat.

[0119] Since hot water is not needed at this time, water pump 34 is shut 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 be used to adjust the flow rate as needed.

[0120] (9) Heat source neither cooling nor heating, air conditioning cooling, hot water supply mode

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

[0122] At this time, since hot water is needed, the first heat exchanger 11 is converted 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, the first heating circuit works to heat the water in the hot water tank 31, and the air conditioning circuit 41 works to cool. By opening the fifth control valve 161 and the third heat exchanger 16, auxiliary heat can be released to the air. The third control valve 32, the sixth control valve 114, the seventh control valve I 441 and the seventh control valve II 451 can be adjusted according to demand.

[0123] (10) Heat source neither cooling nor heating, air conditioning cooling, and no hot water provided mode

[0124] In this working mode, the heat source 21 does not need to be cooled or heated, the air conditioner i.e. the heat exchange tube needs to be cooled, 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 switches so that the second heat exchanger 14 becomes an evaporator, and the vapor compression unit 1 is in refrigeration cycle mode.

[0125] At this time, since hot water is not needed, water pump 34 is shut off, and the first and second heating circuits are not working; the third heat exchanger 16 becomes a condenser, the fifth control valve 161 is open, and the sixth control valve 114 can be closed, allowing heat to be transferred from the second heat exchanger 14 to the third heat exchanger 16 and released into the air. The fifth control valve 161, the seventh control valve I 441, and the seventh control valve II 451 can be used to adjust the flow rate as needed.

[0126] (11) Heat source neither cools nor heats, air conditioner neither heats nor cools, hot water mode.

[0127] In this working mode, heat source 21 does not need cooling or heating, air conditioner i.e. heat exchanger tube does not need heating or cooling, first liquid pump 24 is closed, second liquid pump 42 is closed, and first control valve 22, second control valve 23, seventh control valve I 441 and seventh control valve II 451 can be closed;

[0128] At this point, since hot water is required, the second heat exchanger 14 functions as a condenser, the vapor compression unit 1 operates in heating cycle mode, the third heat exchanger 16 functions as an evaporator, the fifth control valve 161 is open, the sixth control valve 114 can be closed, the third control valve 32 is closed, and the fourth control valve 33 is open. Heat is absorbed from the air source through the third heat exchanger 16 to the second heat exchanger 14, and the second heating circuit operates to heat the water in the hot water tank 31. The fourth control valve 33 and the fifth control valve 161 can adjust the flow rate as needed.

[0129] (12) Heat source neither cools nor heats, air conditioner neither heats nor cools, and hot water is not provided.

[0130] In this working mode, heat source 21 does not need cooling or heating, air conditioner i.e. heat exchanger tube does not need cooling or heating, first liquid pump 24 is closed, and first control valve 22, second control valve 23, seventh control valve I 441 and seventh control valve II 451 can be closed;

[0131] Since hot water is not needed at this time, water pump 34 is shut off, and control valves 32, 33, 161, and 114 can also be closed. In this operating mode, all units are inactive, equivalent to standby mode.

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

[0133] In this working mode, heat source 21 needs to be heated, and the air conditioner, i.e., the heat exchange tube, needs to generate heat. The four-way valve 12 switches so that the second heat exchanger 14 becomes a condenser, the vapor compression unit 1 is in heating cycle mode, the first control valve 22 is closed, the second control valve 23 is open, the third heat exchanger 16 becomes an evaporator, the fifth control valve 161 is open, 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 works to generate heat.

[0134] At this time, because hot water is needed, the third control valve 32 is closed and the fourth control valve 33 is opened, and the second heating circuit heats the water in the hot water tank 31. The second control valve 23, the fourth control valve 33, the fifth control valve 161, the seventh control valve I 441, and the seventh control valve II 451 can be adjusted according to demand.

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

[0136] In this working mode, heat source 21 needs to be heated, and the air conditioner, i.e., the heat exchange tube, needs to generate heat. The four-way valve 12 switches so that the second heat exchanger 14 becomes a condenser, the vapor compression unit 1 is in heating cycle mode, the first control valve 22 is closed, the second control valve 23 is open, the third heat exchanger 16 becomes an evaporator, the fifth control valve 161 is open, 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 works to generate heat.

[0137] Since hot water is not needed at this time, 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 as needed.

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

[0139] In this working mode, heat source 21 needs to be heated, and air conditioning (i.e., heat exchange tubes) needs to be cooled. The four-way valve 12 switches so that the first heat exchanger 11 becomes a condenser and the second heat exchanger 14 becomes an evaporator. The vapor compression unit 1 is in refrigeration cycle mode. The sixth control valve 114 is open, the first control valve 22 is open, 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 works to heat heat source 21, and the air conditioning circuit 41 works to cool.

[0140] At this time, since hot water is needed, the third control valve 32 opens and the fourth control valve 33 closes, and the first heating circuit operates to heat the water in the hot water tank 31. Auxiliary heat release can be achieved by opening the fifth control valve 161 and the third heat exchanger 16. The first control valve 22, the third control valve 32, the sixth control valve 114, the seventh control valve I 441, and the seventh control valve II 451 can be adjusted according to demand.

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

[0142] In this working mode, heat source 21 needs to be heated, and air conditioning (i.e., heat exchange tubes) needs to be cooled. The four-way valve 12 switches so that the first heat exchanger 11 becomes a condenser and the second heat exchanger 14 becomes an evaporator. The vapor compression unit 1 is in refrigeration cycle mode. The sixth control valve 114 is open, the first control valve 22 is open, 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 works to heat heat source 21, and the air conditioning circuit 41 works to cool.

[0143] Since hot water is not required at this time, water pump 34 is shut off, and third control valve 32 and fourth control valve 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 be used to adjust the flow rate as needed.

[0144] (17) Heat source heating, air conditioner not heating or cooling, hot water supply mode

[0145] In this operating mode, heat source 21 needs to be heated, the air conditioner (i.e., the heat exchanger tube) does not need to heat or cool, the second heat exchanger 14 is formed as a condenser, the vapor compression unit 1 is in heating cycle mode, the first control valve 22 is closed, the second control valve 23 is open, the third heat exchanger 16 is formed as an evaporator, the fifth control valve 161 is open, heat is absorbed from the air through the third heat exchanger 16 to the second heat exchanger 14, the second cooling circuit works to heat 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, because hot water is needed, the third control valve 32 is closed and the fourth control valve 33 is opened, and the second heating circuit operates 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 conditioner not heating or cooling, and no hot water provided mode

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

[0149] Since hot water is not needed at this time, 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 as needed.

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

[0151] As can be seen from the above, the thermal management system for integrated energy equipment provided in this embodiment can recover and utilize the heat generated by the heat source when cooling the heat source, and use it to provide domestic hot water and air conditioning heat energy. Moreover, the thermal management system has multiple working modes, which can meet the diversified needs of actual working scenarios.

[0152] Example 2:

[0153] like Figure 6-7 As shown, the thermal management system for integrated energy equipment provided in this embodiment, compared with Embodiment 1, does not employ the third heat exchanger 16, the fifth control valve 161, and the sixth control valve 114 in the vapor 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, and 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 no hot water supply mode; heat source heating, air conditioning cooling, and hot water supply mode; and heat source heating, air conditioning cooling, and no hot water supply mode. These operating modes can be executed with reference to Embodiment 1, the only difference being that the third heat exchanger 16 does not participate in the operation in this embodiment. The thermal management system of this embodiment also has several operating modes, which can meet diverse working needs to a certain extent.

[0154] In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0155] In this invention, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components.

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

[0157] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

Claims

1. A thermal management system integrating energy equipment, characterized in that, include: 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 heat source cooling unit (2) includes a heat source (21), a first control valve (22) and a second control valve (23). The first control valve (22) is disposed in a first cooling branch (221) that communicates with the first heat exchanger (11) and exchanges heat. The second control valve (23) is disposed in a second cooling branch (231) that communicates with the second heat exchanger (14) and exchanges heat. The first cooling branch (221) and the second cooling branch (231) are arranged in parallel. The heat source (21) and the first cooling branch (221) form a first cooling circuit. The heat source (21) and the second cooling branch (231) form a second cooling circuit. Hot water recovery unit (3), the hot water recovery unit (3) includes a hot water tank (31), a third control valve (32) and a fourth control valve (33). The third control valve (32) is installed in a first heating branch (321) that communicates with the first heat exchanger (11) and exchanges heat. The fourth control valve (33) is installed in a second heating branch (331) that communicates with the second heat exchanger (14) and exchanges heat. The first heating branch (321) and the second heating branch (331) are connected in parallel. The hot water tank (31) and the first heating branch (321) form a first heating circuit. The hot water tank (31) and the second heating branch (331) form a second heating circuit. A heat recovery air conditioning unit (4) includes a heat exchange tube, which is disposed in an air conditioning circuit (41) that is connected to and exchanges heat with the second heat exchanger (14).

2. The thermal management system for integrated energy equipment according to claim 1, characterized in that, The vapor compression unit (1) also includes a third heat exchanger (16), which is an air heat exchanger. The third heat exchanger (16) is connected in parallel with the first heat exchanger (11). 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.

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 photovoltaic energy storage and charging system.

4. The thermal management system for the 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) also includes 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 includes a first liquid pump (24) and a cold liquid tank (25). 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 includes a second liquid pump (42) and a buffer tank (43). 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 includes a water pump (34). 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 an outlet (311) and a water inlet (312); the hot water tank (31) is also provided with a float valve (313), which is connected to the water inlet (312). When the water level in the hot water tank (31) is lower than the 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), and an overflow port (312). 16) and electric heater (317). When the temperature sensor (314) detects that the water temperature in the hot water tank (31) exceeds the set upper temperature limit, the solenoid valve (315) opens, and the water inlet (312) forces tap water into the hot water tank (31). Excess water flows out from the overflow port (316). When the temperature sensor (314) detects that the water temperature in the hot water tank (31) is lower than the set lower temperature limit, the electric heater (317) assists in heating.

7. A method for operating a thermal management system for an integrated energy device as described in claim 1, characterized in that, Includes the following steps: Receive a first demand command for controlling the operation of the heat source cooling unit (2); Receive a second demand command for controlling the operation of the heat recovery air conditioning unit (4); Receive a third demand command 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 of operating the thermal management system for integrated energy equipment according to claim 7, characterized in that, The heat source cooling unit (2) is equipped with a temperature measuring device at the heat source (21), and the temperature measuring device sends the first demand command according to the detected temperature.

9. The method of operating the thermal management system of the integrated energy equipment according to claim 7 or 8, characterized in that, The thermal management system can operate according to demand in the following modes: heat source cooling, air conditioning heating, and hot water supply; heat source cooling, air conditioning heating, and no hot water supply; heat source cooling, air conditioning cooling, and hot water supply; and heat source cooling, air conditioning neither heating nor cooling, and hot water supply. The heat source neither cools nor heats; the air conditioner is in cooling mode; and hot water is provided. The following modes are available: Heat source neither cooling nor heating, air conditioner neither heating nor cooling, and no hot water provided; Heat source heating, air conditioner cooling, and hot water provided; Heat source heating, air conditioner cooling, and no hot water provided.

10. The method of operating the thermal management system of the integrated energy equipment according to claim 7 or 8, characterized in that, The vapor compression unit (1) also includes a third heat exchanger (16), which is an air heat exchanger. The third heat exchanger (16) is connected in parallel with the first heat exchanger (11). 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. The thermal management system can operate according to demand in the following modes: heat source cooling, air conditioning heating, and hot water supply; heat source cooling, air conditioning heating, and no hot water supply; heat source cooling, air conditioning cooling, and hot water supply; heat source cooling, air conditioning neither heating nor cooling, and hot water supply; heat source neither cooling nor heating, air conditioning heating, and hot water supply; and heat source neither cooling nor heating, air conditioning heating, and hot water supply. The heat source neither cools nor heats, the air conditioner is in heating mode but does not provide hot water; the heat source neither cools nor heats, the air conditioner is in cooling mode but provides hot water. The heat source neither cools nor heats, the air conditioner is cooling, and hot water is not provided; the heat source neither cools nor heats, the air conditioner neither heats nor cools, and hot water is provided. The following modes are available: Heat source neither cooling nor heating, air conditioner neither heating nor cooling, and no hot water provided; Heat source heating, air conditioner heating, and hot water provided; Heat source heating, air conditioner heating, and no hot water provided; Heat source heating, air conditioner cooling, and hot water provided; Heat source heating, air conditioner neither heating nor cooling, and hot water provided; Heat source heating, air conditioner neither heating nor cooling, and no hot water provided.

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