Control method of heat pump system, heat pump system and storage medium

Abstract

The invention discloses a control method of a heat pump system, the heat pump system and a storage medium. Wherein the refrigerant main path comprises an indoor heat exchanger, a first control valve, a heat dissipation module, a second control valve and an outdoor heat exchanger which are connected with one another, the heat dissipation module is used for dissipating heat of a heating part, and the refrigerant branch path comprises a third control valve and an energy storage device. The method comprises the steps that the first temperature of the heat dissipation module and the second temperature of the environment where the heat dissipation module is located are acquired; according to the first temperature and the second temperature, at least one control valve in the first control valve, the second control valve and the third control valve is controlled to operate so as to reduce the condensation risk of the heat dissipation module; and controlling an outdoor fan corresponding to the outdoor heat exchanger to operate according to the first temperature and the second temperature so as to reduce the condensation risk of the heat dissipation module. The condensation risk of the heat dissipation module is reduced, and the operation reliability of the heat pump system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pumps, and in particular to a control method for a heat pump system, a heat pump system and a storage medium. Background Art

[0002] Some heat pump systems will have a heat dissipation module installed in their refrigerant flow path to dissipate heat from heat-generating components such as the electronic control panel through the medium and low temperature refrigerant flowing through it.

[0003] However, when the temperature of the refrigerant flowing through the heat dissipation module is too low, condensation water will be generated on the surface of the heat dissipation module, causing damage to the heating components, thereby reducing the reliability of the heat pump system operation. Summary of the invention

[0004] The main purpose of the present invention is to provide a control method for a heat pump system, a heat pump system and a storage medium, aiming to reduce the condensation risk of the heat dissipation module and improve the reliability of the operation of the heat pump system.

[0005] To achieve the above object, the present invention provides a control method for a heat pump system, the heat pump system comprising a refrigerant main circuit and a refrigerant branch circuit connected to the refrigerant main circuit, the refrigerant main circuit comprising a connected indoor heat exchanger, a first control valve, a heat dissipation module, a second control valve and an outdoor heat exchanger, the heat dissipation module is used to dissipate heat from a heat generating component, the refrigerant branch circuit comprises a third control valve and an energy storage device, and the control method for the heat pump system comprises the following steps:

[0006] Acquire a first temperature of the heat dissipation module and a second temperature of an environment where the heat dissipation module is located;

[0007] The operation of at least one of the first control valve, the second control valve and the third control valve is controlled according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module, and / or the operation of the outdoor fan corresponding to the outdoor heat exchanger is controlled according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module.

[0008] Optionally, a control valve of the first control valve and the second control valve that is not located in the refrigerant inflow direction of the heat dissipation module is defined as a first target control valve, and a control valve of the first control valve and the second control valve that is located in the refrigerant inflow direction of the heat dissipation module is defined as a second target control valve, the refrigerant main circuit also includes a compressor connected to the indoor heat exchanger and the outdoor heat exchanger respectively, the first end of the refrigerant branch is connected to the exhaust port of the compressor, or the first end of the refrigerant branch is connected to the exhaust port or return port of the compressor through a reversing component, the pipeline between the heat dissipation module and the first control valve is connected to the second end of the refrigerant branch, and the step of controlling the operation of at least one of the first control valve, the second control valve and the third control valve according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes:

[0009] When the first temperature is less than or equal to the second temperature, the first target control valve is controlled to operate with a reduced opening, and / or the second target control valve is controlled to operate with an opening greater than a preset opening, and / or the third control valve is controlled to operate with an opening greater than a preset opening;

[0010] When the first temperature is greater than the second temperature, and the first temperature is less than or equal to the third temperature, the first target control valve is controlled to operate at a degree less than or equal to the current opening, and / or the second target control valve is controlled to operate at a degree greater than or equal to the current opening, and / or the third control valve is controlled to operate at a degree greater than or equal to the current opening;

[0011] The third temperature is obtained by increasing the second temperature by a preset adjustment value.

[0012] Optionally, when the first temperature is less than or equal to the second temperature, the step of controlling the first target control valve to operate with a reduced opening, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises:

[0013] During the operation of the heat pump system in the first mode, when the first temperature is less than or equal to the second temperature, the first control valve is controlled to reduce its opening, and the second control valve is controlled to operate at an opening greater than a preset opening;

[0014] When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include:

[0015] During the operation of the first mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to a third temperature, the first control valve is controlled to operate at a degree of opening less than or equal to a current degree of opening, and the second control valve is controlled to operate at a degree of opening greater than or equal to a current degree of opening;

[0016] Among them, during the operation of the first mode: the outdoor heat exchanger is connected to the exhaust port of the compressor, the indoor heat exchanger is connected to the return air port of the compressor, the first control valve operates in throttling mode, the second control valve is opened, and the third control valve operates with an opening less than or equal to the minimum opening.

[0017] Optionally, when the first temperature is less than or equal to the second temperature, the step of controlling the first target control valve to operate with a reduced opening, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises:

[0018] During the operation of the heat pump system in the second mode, when the first temperature is less than or equal to the second temperature, the second control valve is controlled to reduce its opening, and the first control valve is controlled to operate at an opening greater than a preset opening;

[0019] When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include:

[0020] During the operation of the heat pump system in the second mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to a third temperature, the second control valve is controlled to operate at a degree of opening less than or equal to a current degree of opening, and the first control valve is controlled to operate at a degree of opening greater than or equal to a current degree of opening;

[0021] Wherein, during the operation of the second mode: the indoor heat exchanger is connected to the exhaust port of the compressor, the outdoor heat exchanger is connected to the return air port of the compressor, the first control valve is opened, the second control valve operates in throttling mode, and the third control valve operates at an opening less than or equal to the minimum opening.

[0022] Optionally, when the first temperature is less than or equal to the second temperature, the step of controlling the first target control valve to operate with a reduced opening, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises:

[0023] During the operation of the heat pump system in the third mode, when the first temperature is less than or equal to the second temperature, the second control valve is controlled to reduce its opening, and the third control valve is controlled to operate at an opening greater than a preset opening;

[0024] When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include:

[0025] During the operation of the heat pump system in the third mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the second control valve is controlled to operate at a degree greater than or equal to the current opening, and the third control valve is controlled to operate at a degree greater than or equal to the current opening;

[0026] Among them, during the operation of the third mode: the indoor heat exchanger is connected to the return air port of the compressor, the outdoor heat exchanger is connected to the return air port of the compressor, the third control valve operates with an opening greater than the minimum opening, the second control valve operates in throttling, and the first control valve is closed.

[0027] Optionally, when the first temperature is less than or equal to the second temperature, the step of controlling the first target control valve to operate with a reduced opening, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises:

[0028] During the operation of the heat pump system in the fourth mode, when the first temperature is less than or equal to the second temperature, the first control valve is controlled to reduce its opening, the second control valve is controlled to operate at an opening greater than a preset opening, and the third control valve is controlled to operate at an opening greater than a preset opening;

[0029] When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include:

[0030] During the operation of the heat pump system in the fourth mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to a third temperature, the first control valve is controlled to operate at a degree less than or equal to a current opening, the second control valve is controlled to operate at a degree greater than or equal to a current opening, and the third control valve is controlled to operate at a degree greater than or equal to a current opening;

[0031] Among them, during the operation of the fourth mode: the outdoor heat exchanger is connected to the exhaust port of the compressor, the indoor heat exchanger is connected to the return air port of the compressor, the first control valve operates in throttling mode, the second control valve is opened, and the third control valve is opened with an opening greater than the minimum opening.

[0032] Optionally, when the first temperature is less than or equal to the second temperature, the step of controlling the first target control valve to operate with a reduced opening, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises:

[0033] During the operation of the fifth mode of the heat pump system, when the first temperature is less than or equal to the second temperature, the first control valve is controlled to operate with a reduced opening, the second control valve is controlled to operate with a reduced opening, and the third control valve is controlled to operate with an opening greater than a preset opening;

[0034] When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include:

[0035] During the operation of the fifth mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to a third temperature, the first control valve is controlled to operate at a degree less than or equal to a current opening, the second control valve is controlled to operate at a degree less than or equal to a current opening, and the third control valve is controlled to operate at a degree greater than or equal to a current opening;

[0036] Wherein, during the operation of the fifth mode: the outdoor heat exchanger and the indoor heat exchanger are both connected to the return air port of the compressor, the first control valve and the second control valve are both throttling operation, and the third control valve is opened with an opening greater than the minimum opening.

[0037] Optionally, when the first temperature is less than or equal to the second temperature, the step of controlling the first target control valve to operate with a reduced opening, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises:

[0038] During the sixth operation mode of the heat pump system, when the first temperature is less than or equal to the second temperature, the first control valve is controlled to operate at an opening greater than a preset opening, the second control valve is controlled to operate at a reduced opening, and the third control valve is controlled to operate at an opening greater than a preset opening;

[0039] When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include:

[0040] During the operation of the heat pump system in the sixth mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the first control valve is controlled to operate at a degree greater than or equal to the current opening, the second control valve is controlled to operate at a degree less than or equal to the current opening, and the third control valve is controlled to operate at a degree greater than or equal to the current opening;

[0041] Among them, during the operation of the sixth mode: the outdoor heat exchanger is connected to the return air port of the compressor, the indoor heat exchanger is connected to the exhaust port of the compressor, the first control valve is opened, the second control valve is throttling operation, and the third control valve is opened with an opening greater than the minimum opening.

[0042] Optionally, the step of controlling the operation of the outdoor heat exchanger according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes:

[0043] When the outdoor heat exchanger is in a condensing state, and when the first temperature is less than or equal to the second temperature, controlling the outdoor fan to operate at a reduced speed;

[0044] When the outdoor heat exchanger is in a condensing state, and when the first temperature is greater than the second temperature, and the first temperature is less than or equal to a third temperature, controlling the outdoor fan to operate at a rotation speed less than or equal to a current rotation speed;

[0045] The third temperature is obtained by increasing the second temperature by a preset adjustment value.

[0046] Optionally, the step of controlling the operation of the outdoor heat exchanger according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes:

[0047] When the outdoor heat exchanger is in an evaporating state and when the first temperature is less than or equal to the second temperature, controlling the outdoor fan to increase the speed of operation;

[0048] When the outdoor heat exchanger is in an evaporating state, and when the first temperature is greater than the second temperature, and the first temperature is less than or equal to a third temperature, controlling the outdoor fan to operate at a speed greater than or equal to a current speed;

[0049] The third temperature is obtained by increasing the second temperature by a preset adjustment value.

[0050] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a heat pump system, the heat pump system includes a control device, a refrigerant main circuit and a refrigerant branch circuit connected to the refrigerant main circuit, the refrigerant main circuit includes a connected indoor heat exchanger, a first control valve, a heat dissipation module, a second control valve and an outdoor heat exchanger, the heat dissipation module is used to dissipate heat from the heat-generating component, the refrigerant branch circuit includes a third control valve and an energy storage device, and the outdoor heat exchanger is provided with a corresponding outdoor fan;

[0051] The first control valve, the second control valve, the third control valve and the outdoor fan are all connected to the control device, and the control device includes: a memory, a processor and a control program of the heat pump system stored in the memory and executable on the processor, and when the control program of the heat pump system is executed by the processor, the steps of the control method of the heat pump system as described in any one of the above items are implemented.

[0052] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a control program of a heat pump system is stored. When the control program of the heat pump system is executed by a processor, the steps of the control method of the heat pump system as described in any of the above items are implemented.

[0053] The present invention proposes a control method for a heat pump system, wherein the heat pump system includes a refrigerant main circuit and a refrigerant branch circuit connected to the refrigerant main circuit, the refrigerant main circuit includes a compressor and a connected indoor heat exchanger, a first control valve, a heat dissipation module for dissipating heat from heat-generating components, a second control valve and an outdoor heat exchanger, and the refrigerant branch circuit includes a third control valve and an energy storage device. Based on the heat pump system, a first temperature of the heat dissipation module and a second temperature of the environment in which the heat dissipation module is located can accurately reflect the condensation risk of the heat dissipation module, and the operation of at least one of the first control valve, the second control valve and the third control valve and / or the operation of the outdoor fan can be regulated according to the first temperature and the second temperature, thereby reducing the condensation risk of the heat dissipation module, avoiding damage to heat-generating components, and effectively improving the reliability of the operation of the heat pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of a refrigerant pipeline of an embodiment of a heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in a first mode;

[0055] Figure 2 A schematic diagram of a refrigerant pipeline of an embodiment of a heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in a second mode;

[0056] Figure 3 A schematic diagram of a refrigerant pipeline of an embodiment of a heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in a third mode;

[0057] Figure 4 A schematic diagram of a refrigerant pipeline of an embodiment of a heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in a fourth mode;

[0058] Figure 5 A schematic diagram of a refrigerant pipeline of an embodiment of a heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in a fifth mode;

[0059] Figure 6 A schematic diagram of a refrigerant pipeline of an embodiment of a heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in a sixth mode;

[0060] Figure 7 A schematic diagram of the hardware structure involved in the operation of an embodiment of a heat pump system of the present invention;

[0061] Figure 8 A schematic flow chart of an embodiment of a control method for a heat pump system of the present invention;

[0062] Fig. 9 It is a flow chart of another embodiment of the control method of the heat pump system of the present invention.

[0063] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0064] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0065] An embodiment of the present invention provides a heat pump system.

[0066] In the embodiment of the present invention, refer to Figures 1 to 7 The heat pump system includes a control device 100, a refrigerant main circuit and a refrigerant branch circuit connected to the refrigerant main circuit.

[0067] The refrigerant main circuit includes an indoor unit, an outdoor heat exchanger 4, a heat dissipation module 5, a second control valve 8 and a compressor 1. The indoor unit includes an indoor heat exchanger 9 and a first control valve 7. The indoor heat exchanger 9, the first control valve 7, the heat dissipation module 5, the second control valve 8 and the outdoor heat exchanger 4 are connected. The indoor heat exchanger 9 and the outdoor heat exchanger 4 are respectively connected to the compressor 1. The refrigerant branch circuit includes an energy storage device 10 and a third control valve 6. The heat dissipation module 5 is used to dissipate heat from heat-generating components (such as a main control board, etc.).

[0068] The first control valve 7, the second control valve 8 and the third control valve 6 are all connected to the control device 100. In this embodiment, the first control valve 7, the second control valve 8 and the third control valve 6 are all electronic expansion valves. In other embodiments, the first control valve 7 and / or the second control valve 8 and / or the third control valve 6 may also be other types of fluid components with adjustable flow.

[0069] The first end of the refrigerant branch is connected to the exhaust port of the compressor 1 on the refrigerant main circuit or the return port of the compressor 1. In this embodiment, the first end of the refrigerant branch is connected to the exhaust port of the compressor 1 on the refrigerant main circuit, and the pipeline between the first control valve 7 and the second control valve 8 is connected to the second end of the refrigerant branch. In this embodiment, the pipeline between the heat dissipation module 5 and the first control valve 7 is connected to the second end of the refrigerant branch.

[0070] The energy storage device 10 is loaded with energy storage materials. When the refrigerant in the refrigerant branch flows through the energy storage device 10, the energy storage materials absorb the heat or cold of the refrigerant and store it. In this embodiment, the energy storage device 10 is a water tank or a water heater. In other embodiments, the energy storage device 10 may also be other types of devices made of energy storage materials with energy storage functions, such as a device loaded with molten salt.

[0071] The outdoor heat exchanger 4 is provided with an outdoor fan 41 correspondingly, and the outdoor fan 41 can drive the outdoor air to exchange heat with the outdoor heat exchanger 4. The indoor heat exchanger 9 is provided with an indoor fan correspondingly, and both the indoor fan and the outdoor fan 41 are connected to the control device 100.

[0072] In this embodiment, the number of indoor units is more than one, the more than one indoor units are distributed in different indoor spaces, and the more than one indoor units are connected in parallel. In other embodiments, the number of indoor units may also be one.

[0073] In this embodiment, the refrigerant main circuit also includes a reversing component connected to the control device 100, and the return air port of the compressor 1, the exhaust port of the compressor 1, the indoor heat exchanger 9 and the outdoor heat exchanger 4 are all connected to the reversing component.

[0074] In one implementation of the present embodiment, the reversing assembly includes a first four-way valve 2 and a second four-way valve 3, the exhaust port of the compressor 1, the indoor heat exchanger 9, the return air port of the compressor 1 and the first blocking member are respectively connected to different valve ports of the first four-way valve 2, and the exhaust port of the compressor 1, the return air port of the compressor 1, the outdoor heat exchanger 4 and the second blocking member are respectively connected to different valve ports of the second four-way valve 3.

[0075] The first four-way valve 2 has a first valve position and a second valve position. When the first four-way valve 2 is in the first valve position, the return air port of the compressor 1 is connected to the indoor heat exchanger 9, and the exhaust port is connected to the first blocking member. When the first four-way valve 2 is in the second valve position, the exhaust port of the compressor 1 is connected to the indoor heat exchanger 9, and the return air port is connected to the first blocking member. The first four-way valve 2 can be equivalent to a three-way valve. When the three-way valve is in the first state, the return air port of the compressor 1 is connected to the indoor heat exchanger 9; when the three-way valve is in the second state, the exhaust port of the compressor 1 is connected to the indoor heat exchanger 9.

[0076] The second four-way valve 3 has a third valve position and a fourth valve position. When the second four-way valve 3 is in the third valve position, the return air port of the compressor 1 is connected to the outdoor heat exchanger 4, and the exhaust port is connected to the second blocking member. When the second four-way valve 3 is in the fourth valve position, the exhaust port of the compressor 1 is connected to the outdoor heat exchanger 4, and the return air port is connected to the second blocking member. The second four-way valve 3 can be equivalent to a three-way valve. When the three-way valve is in the first state, the return air port of the compressor 1 is connected to the outdoor heat exchanger 4; when the three-way valve is in the second state, the exhaust port of the compressor 1 is connected to the outdoor heat exchanger 4.

[0077] In one implementation of this embodiment, the reversing assembly also includes a reversing valve (not shown), which may be a four-way valve or a three-way valve. The reversing valve has a first state and a second state. When the reversing valve is in the first state, the return air port of the compressor 1 is connected to the energy storage device 10; when the reversing valve is in the second state, the exhaust port of the compressor 1 is connected to the energy storage device 10.

[0078] Through the cooperation of the first four-way valve 2 and the second four-way valve 3, the heat pump system can switch between a variety of different modes:

[0079] Reference Figure 1In the first mode, the indoor unit is in a cooling state, the energy storage device 10 is in a stopped energy storage state, the first control valve 7 is in a throttling operation, the third control valve 6 is in an opening less than or equal to the minimum opening, the second control valve 8 is open, the first four-way valve 2 is in a first valve position, the second four-way valve 3 is in a fourth valve position, and the refrigerant discharged from the compressor 1 in the refrigerant main circuit flows through the outdoor heat exchanger 4, the second control valve 8, the heat dissipation module 5, the first control valve 7, the indoor heat exchanger 9 in sequence and then flows back to the compressor 1, wherein the energy storage device 10 stops storing energy. In the first mode, the indoor heat exchanger 9 is in an evaporating state, and the outdoor heat exchanger 4 is in a condensing state.

[0080] Reference Figure 2 In the second mode, the indoor unit is in the heating state and the energy storage device 10 is in the stopped energy storage state. The first control valve 7 is opened, the third control valve 6 operates at an opening less than or equal to the minimum opening, the second control valve 8 operates in throttling, the first four-way valve 2 operates in the second valve position, the second four-way valve 3 operates in the third valve position, and the refrigerant discharged from the compressor 1 flows through the indoor heat exchanger 9, the first control valve 7, the heat dissipation module 5, the second control valve 8, and the outdoor heat exchanger 4 in sequence and then flows back to the compressor 1, wherein the energy storage device 10 stops storing energy. In the second mode, the indoor heat exchanger 9 is in the condensing state and the outdoor heat exchanger 4 is in the evaporating state.

[0081] Reference Figure 3 In the third mode, the indoor unit stops heat exchange, the energy storage device 10 is in the energy storage state, the first control valve 7 is closed or operates at the minimum opening, the third control valve 6 operates at an opening greater than the minimum opening, the second control valve 8 operates in throttling mode, the first four-way valve 2 operates at the second valve position, the second four-way valve 3 operates at the third valve position, the exhaust port of the compressor 1 is connected to the energy storage device 10 (if the reversing assembly includes the above-mentioned reversing valve, the reversing valve is in the second state), and the refrigerant flowing out of the compressor 1 flows through the refrigerant branch, the heat dissipation module 5, the second control valve 8, and the outdoor heat exchanger 4 in sequence before returning to the compressor 1. In the third mode, the outdoor heat exchanger 4 is in the evaporation state.

[0082] Reference Figure 4In the fourth mode, the indoor unit is in a cooling state, the energy storage device 10 is in an energy storage state, the first control valve 7 is in throttling operation, the third control valve 6 is opened with an opening greater than the minimum opening, the second control valve 8 is in operation with an opening greater than or equal to the preset opening, the first four-way valve 2 is in operation at the first valve position, the second four-way valve 3 is in operation at the fourth valve position, the exhaust port of the compressor 1 is in communication with the energy storage device 10 (if the reversing assembly includes the reversing valve mentioned above, the reversing valve is in the second state), and the refrigerant discharged from the compressor 1 in the refrigerant main circuit flows through the outdoor heat exchanger 4, the second control valve 8, the heat dissipation module 5, the first control valve 7, and the indoor heat exchanger 9 in sequence, and then flows back to the compressor 1, wherein part of the refrigerant flowing through the refrigerant main circuit can flow through the refrigerant branch circuit and store energy in the energy storage device 10. In the fourth mode, the indoor heat exchanger 9 is in an evaporating state, and the outdoor heat exchanger 4 is in a condensing state.

[0083] Reference Figure 5 In the fifth mode, the indoor unit is in a cooling state, the energy storage device 10 is in an energy storage state, the first end of the refrigerant branch is connected to the exhaust port of the compressor 1, the first control valve 7 and the second control valve 8 are throttling operation, the third control valve 6 is opened with an opening greater than the minimum opening, the first four-way valve 2 is operated in the first valve position, the second four-way valve 3 is operated in the third valve position, the exhaust port of the compressor 1 is connected to the energy storage device 10 (if the reversing assembly includes the above-mentioned reversing valve, the reversing valve is in the second state), the refrigerant discharged from the compressor 1 first flows into the refrigerant branch, and the energy is stored in the energy storage device 10, a part of the refrigerant flowing out of the refrigerant branch flows through the first control valve 7 and the indoor heat exchanger 9 and then flows back to the compressor 1, and another part of the refrigerant flowing out of the refrigerant branch flows through the heat dissipation module 5, the second control valve 8, and the outdoor heat exchanger 4 and then flows back to the compressor 1. In the fifth mode, the indoor heat exchanger 9 is in an evaporating state, and the outdoor heat exchanger 4 is in an evaporating state.

[0084] Reference Figure 6 In the sixth mode, the indoor unit is in the heating state, the energy storage device 10 is in the energy storage state, the first control valve 7 and the third control valve 6 are open, the second control valve 8 is throttling, the first four-way valve 2 is in the second valve position, the second four-way valve 3 is in the third valve position, the exhaust port of the compressor 1 is connected to the energy storage device 10 (if the reversing assembly includes the above-mentioned reversing valve, the reversing valve is in the second state), and the refrigerant discharged from the compressor 1 flows through the indoor heat exchanger 9, the first control valve 7, the heat dissipation module 5, the second control valve 8, and the outdoor heat exchanger 4 in sequence and then flows back to the compressor 1, wherein part of the refrigerant flowing through the refrigerant main circuit can flow through the refrigerant branch circuit and store energy in the energy storage device 10. In the sixth mode, the indoor heat exchanger 9 is in the condensing state, and the outdoor heat exchanger 4 is in the evaporating state.

[0085] In another implementation of this embodiment, the reversing assembly includes a third four-way valve, and the exhaust port of the compressor 1, the return port of the compressor 1, the indoor heat exchanger 9, and the outdoor heat exchanger 4 are respectively connected to different valve ports of the third four-way valve. Alternatively, the first four-way valve 2 and the second four-way valve 3 in the reversing assembly can be replaced by the first three-way valve and the second three-way valve, respectively, and the blocking member and the valve port connected thereto are eliminated.

[0086] In other embodiments, the heat pump system may not include a reversing component, and the exhaust port of the compressor 1 in the main refrigerant circuit, the indoor heat exchanger 9, the first control valve 7, the second control valve 8, the outdoor heat exchanger 4, and the return air port of the compressor 1 are connected in sequence.

[0087] Furthermore, the heat pump system further includes a temperature detection module 01, which is connected to the control device 100. The temperature detection module 01 includes a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is disposed on the surface of the heat dissipation module 5 to detect a first temperature of the heat dissipation module 5; and the second temperature sensor is disposed in the environment where the heat dissipation module 5 is located to detect a second temperature of the heat dissipation module 5.

[0088] In the embodiment of the present invention, refer to Figure 7 The control device 100 of the heat pump system includes: a processor 1001, such as a CPU, a memory 1002, and a timer 1003. Among them, these components are connected and communicated through a communication bus. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0089] Those skilled in the art will understand that Figure 7 The device structure shown in the figure does not constitute a limitation of the device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0090] like Figure 7 As shown, the memory 1002 as a computer storage medium may include a control program for the heat pump system.

[0091] exist Figure 7 In the device shown, the processor 1001 can be used to call the control program of the heat pump system stored in the memory 1002, and execute the relevant step operations of the control method of the heat pump system in the following embodiment.

[0092] An embodiment of the present invention also provides a control method for a heat pump system.

[0093] Reference Figure 8, an embodiment of a control method of a heat pump system of the present application is proposed. In this embodiment, the control method of the heat pump system includes:

[0094] Step S10, obtaining a first temperature of the heat dissipation module and a second temperature of an environment where the heat dissipation module is located;

[0095] The first temperature can be obtained by acquiring temperature data detected in real time by the first temperature sensor. The second temperature can be obtained by acquiring temperature data detected in real time by the second temperature sensor.

[0096] During the start-up of the heat pump system, the first temperature and the second temperature here can be obtained every target period. The target period here can be a preset fixed duration, or a duration determined according to the actual operation of the heat pump system. For example, the change characteristic value of the condensation risk can be determined based on the temperature of the heat dissipation module detected in the previous cycle, the temperature of the environment where the heat dissipation module is located, the opening of the first control valve, the opening of the second control valve, the opening of the third control valve, and the speed of the outdoor fan, and the target period here is determined based on the change characteristic value, and so on.

[0097] Step S20, controlling the operation of at least one of the first control valve, the second control valve and the third control valve according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module, and / or controlling the operation of the outdoor fan corresponding to the outdoor heat exchanger according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module.

[0098] Specifically, the opening control parameter of at least one of the first control valve, the second control valve and the third control valve can be determined according to the first temperature and the second temperature, and the operation of the corresponding control valve can be controlled according to the opening control parameter. The opening control parameter includes reducing the opening, increasing the opening, prohibiting increasing the opening, prohibiting reducing the opening, limiting the minimum opening allowed for operation, limiting the maximum opening allowed for operation, or the target opening for preventing condensation, etc.

[0099] Define the control valve among the first control valve, the second control valve and the third control valve that is adapted to the first temperature and the second temperature for opening control as the target refrigerant valve, wherein the operation of at least one of the first control valve, the second control valve and the third control valve can be controlled according to the first temperature, the second temperature and the current operation mode of the heat pump system. The target refrigerant valves corresponding to different operation modes are different, and the corresponding relationship between the first temperature, the second temperature and the opening control parameters of the target refrigerant valve corresponding to different operation modes is different. Specifically, the target refrigerant valve among the first control valve, the second control valve and the third control valve can be determined according to the current operation mode of the heat pump system, and when the first temperature and the second temperature meet the preset conditions for condensation of the heat dissipation module, the operation of the target refrigerant valve is controlled according to the opening control parameters corresponding to the current operation mode.

[0100] Specifically, the speed control parameters of the outdoor fan can be determined according to the first temperature and the second temperature, and the operation of the corresponding outdoor fan can be controlled according to the speed control parameters. The speed control parameters include reducing the speed, increasing or prohibiting increasing the speed, prohibiting reducing the speed, limiting the minimum speed allowed for operation, limiting the maximum speed allowed for operation, or the target speed for anti-condensation, etc.

[0101] The outdoor fan operation can be controlled according to the first temperature, the second temperature and the current operation mode of the heat pump system. The corresponding relationship between the first temperature, the second temperature and the speed control parameter of the outdoor fan is different for different operation modes. When the first temperature and the second temperature meet the preset conditions for condensation of the heat dissipation module, the outdoor fan anti-condensation operation is controlled according to the speed control parameter corresponding to the current operation mode.

[0102] Alternatively, the heat exchange state (evaporation state or condensation state) of the outdoor heat exchanger in the current operating mode of the heat pump system is determined. When the first temperature and the second temperature meet the preset conditions for condensation of the heat dissipation module, the outdoor fan is controlled to operate in anti-condensation mode according to the speed control parameters corresponding to the current heat exchange state. Different heat exchange states correspond to different speed control parameters.

[0103] A control method for a heat pump system is proposed in an embodiment of the present invention. The heat pump system includes a refrigerant main circuit and a refrigerant branch circuit connected to the refrigerant main circuit. The refrigerant main circuit includes a compressor and an indoor heat exchanger, a first control valve, a heat dissipation module for dissipating heat from a heat-generating component, a second control valve, and an outdoor heat exchanger connected in sequence. The refrigerant branch circuit includes a third control valve and an energy storage device. Based on the heat pump system, a first temperature of the heat dissipation module and a second temperature of an environment in which the heat dissipation module is located can accurately reflect the condensation risk of the heat dissipation module. The operation of at least one of the first control valve, the second control valve, and the third control valve can be regulated and / or the operation of the outdoor fan can be regulated according to the first temperature and the second temperature, thereby reducing the condensation risk of the heat dissipation module, avoiding damage to the heat-generating component, and effectively improving the reliability of the operation of the heat pump system.

[0104] Further, based on the above embodiment, another embodiment of the control method of the heat pump system of the present application is proposed. In this embodiment, the control valve of the first control valve and the second control valve that is not located in the refrigerant inflow direction of the heat dissipation module is defined as the first target control valve, and the control valve of the first control valve and the second control valve that is located in the refrigerant inflow direction of the heat dissipation module is defined as the second target control valve. The refrigerant main circuit also includes a compressor connected to the indoor heat exchanger and the outdoor heat exchanger respectively, the first end of the refrigerant branch is connected to the exhaust port of the compressor, and the pipeline between the heat dissipation module and the first control valve is connected to the second end of the refrigerant branch. Among them, the first target control valve here may include the first control valve or the second control valve in the refrigerant outflow direction of the heat dissipation module, or the first control valve or the second control valve on different refrigerant flow paths with the heat dissipation module. Different operating modes of the heat pump system will result in different refrigerant flow directions in the heat pump system, and the corresponding first target control valve and second target control valve may be different. When the heat pump system has more than one operating mode, the first target control valve and the second target control valve here can be determined according to the current operating mode of the heat pump system. Reference Fig. 9 The step of controlling at least one of the first control valve, the second control valve and the third control valve to operate according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes:

[0105] Step S21, when the first temperature is less than or equal to the second temperature, controlling the first target control valve to operate with a reduced opening, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening;

[0106] When the first temperature is less than or equal to the second temperature, it indicates that the heat dissipation module currently has a condensation risk and the risk is relatively high.

[0107] When the first target control valve is operated with a reduced opening, it is beneficial to increase the condensing pressure of the heat pump system, thereby increasing the temperature of the refrigerant flowing into the heat dissipation module to reduce the condensation risk of the heat dissipation module.

[0108] The first target control valve can reduce the opening by a preset fixed opening adjustment value. For example, the opening adjustment value of 20pls can be preset to reduce the current opening of the first target control valve. In addition, the current opening of the first target control valve can also be reduced according to the opening adjustment value determined by the actual operating state of the heat pump system. For example, the opening adjustment value here can be determined according to the operating speed of the outdoor fan and / or the exhaust pressure of the compressor and / or the condensing pressure of the heat pump system and / or the current opening of the third control valve and / or the temperature difference between the current temperature of the energy storage device and the target energy storage temperature when the third control valve is opened. These parameters can accurately reflect the trend of the dew condensation risk of the heat dissipation module. Therefore, the corresponding opening adjustment value is determined by these parameters to control the first target control valve to reduce the opening, which is conducive to further reducing the dew condensation risk of the heat dissipation module.

[0109] When the second target control valve operates at an opening greater than the preset opening, it is beneficial to reduce the throttling effect of the refrigerant flowing into the heat dissipation module, increase the condensation pressure of the heat pump system, and increase the temperature of the refrigerant flowing into the heat dissipation module, thereby reducing the condensation risk of the heat dissipation module.

[0110] In this embodiment, the second target control valve is operated with an opening greater than a preset opening, including controlling the second target control valve to operate with a maximum opening. The preset opening is less than the maximum opening of the second target control valve, and the preset opening may be 70% of the maximum opening. The second target control valve may be operated with an opening smaller than the maximum opening and larger than the preset opening. The specific operating opening of the second target control valve may be a preset fixed opening, or an opening determined according to the actual operating state of the heat pump system. For example, the opening adjustment value here may be determined according to the temperature difference between the first temperature and the second temperature and / or the current opening of the third control valve and / or the current speed of the outdoor fan and / or the temperature difference between the current temperature of the energy storage device and the target energy storage temperature when the third control valve is opened. These parameters may accurately reflect the trend of the dew condensation risk of the heat dissipation module. Therefore, the corresponding opening adjustment value is determined by these parameters to control the operating opening of the second target control valve, which is conducive to further reducing the dew condensation risk of the heat dissipation module.

[0111] When the third control valve operates at an opening greater than the preset opening, the amount of refrigerant circulating in the main refrigerant circuit is reduced, which can increase the condensing pressure of the heat pump system and the temperature of the refrigerant flowing into the heat dissipation module, thereby reducing the condensation risk of the heat dissipation module.

[0112] In this embodiment, the operation of the third control valve at an opening greater than a preset opening includes controlling the third control valve to operate at a maximum opening. The preset opening is less than the maximum opening of the third control valve, and the preset opening may be 70% of the maximum opening. The third control valve may operate at an opening smaller than the maximum opening and larger than the preset opening. The specific operating opening of the third control valve may be a preset fixed opening, or an opening determined according to the actual operating state of the heat pump system. For example, the opening adjustment value here may be determined according to the temperature difference between the first temperature and the second temperature and / or the current opening of the third control valve and / or the current speed of the outdoor fan and / or the temperature difference between the current temperature of the energy storage device and the target energy storage temperature when the third control valve is opened. These parameters may accurately reflect the trend of the dew condensation risk deterioration of the heat dissipation module and the energy storage demand of the energy storage device. By determining the corresponding opening adjustment value through these parameters to control the operating opening of the second target control valve, it is beneficial to further reduce the dew condensation risk of the heat dissipation module while meeting the energy storage demand of the energy storage device.

[0113] Wherein, when the first temperature is less than or equal to the second temperature, in the current operation mode of the heat pump system, when the first control valve is currently open and is the first target control valve, the first control valve can be controlled to operate with a reduced opening, and when the first control valve is currently open and is the second target control valve, the first control valve can be controlled to operate with an opening greater than a preset opening. When the first temperature is less than or equal to the second temperature, in the current operation mode of the heat pump system, when the current opening of the third control valve is greater than the minimum opening, the third control valve can be controlled to operate with an opening greater than a preset opening.

[0114] Step S22, when the first temperature is greater than the second temperature, and the first temperature is less than or equal to the third temperature, the first target control valve is controlled to operate at a degree less than or equal to the current opening, and / or the second target control valve is controlled to operate at a degree greater than or equal to the current opening, and / or the third control valve is controlled to operate at a degree greater than or equal to the current opening; wherein the third temperature is obtained by increasing the second temperature by a preset adjustment value.

[0115] The sum of the preset adjustment value and the second temperature may be used as the third temperature.

[0116] When the first temperature is less than or equal to the third temperature, it indicates that the heat dissipation module currently has a condensation risk and the risk is relatively small.

[0117] In this embodiment, the first target control valve is operated at a degree less than or equal to the current opening, which means that the opening of the first target control valve is prohibited from increasing, and the first target control valve can maintain the current opening for operation, or reduce the opening for operation according to the actual operation of the heat pump system. The opening adjustment value when the opening is reduced can be determined in a similar manner to the above-mentioned determination method of the opening adjustment value of the first target control valve, which will not be described in detail here.

[0118] In this embodiment, the second target control valve is operated at a degree greater than or equal to the current opening, which means that the opening of the first target control valve is prohibited from decreasing, and the second target control valve can maintain the current opening for operation, or increase the opening for operation according to the actual operation of the heat pump system. The opening adjustment value when increasing the opening can be determined in a similar manner to the above-mentioned determination method of the opening adjustment value of the first target control valve, which will not be described in detail here.

[0119] In this embodiment, the third control valve is operated at a degree greater than or equal to the current opening, which means that the degree of opening of the third control valve is prohibited from decreasing, and the third control valve can maintain the current degree of opening for operation, or increase the degree of opening for operation according to the actual operation of the heat pump system. The degree of opening adjustment value when increasing the degree of opening can be determined in a manner similar to the determination method of the degree of opening adjustment value of the first target control valve mentioned above, which will not be described in detail here.

[0120] The preset condition for the existence of condensation risk mentioned in the above embodiment includes that the first temperature here is less than or equal to the third temperature.

[0121] It should be noted that the order in which step S21 and step S22 are executed is not specifically limited.

[0122] In this embodiment, when the condensation risk of the heat dissipation module is relatively large, the opening of the first control valve and / or the second control valve is changed in the direction of reducing the condensation risk and / or the third control valve is limited to operate within the opening range of eliminating the condensation risk, which is conducive to increasing the system condensation pressure and increasing the temperature of the refrigerant flowing into the heat dissipation module, thereby ensuring that the condensation risk of the heat dissipation module is effectively reduced; when the condensation risk of the heat dissipation module is relatively small, the opening change direction of the first control valve and / or the second control valve and / or the third control valve is limited, which is conducive to limiting the further reduction of the system condensation pressure, avoiding further reduction of the temperature of the refrigerant flowing into the heat dissipation module, and preventing the condensation risk of the heat dissipation module from further deteriorating, thereby effectively avoiding condensation of the heat dissipation module. In addition, when the heat pump system switches between different operating modes, even if the refrigerant flow direction changes, it can be adjusted in the above manner to effectively eliminate the condensation risk of the heat dissipation module, ensuring that the heat pump system operates reliably in different operating modes.

[0123] Further, in a first implementation of the present embodiment, the steps of controlling the first target control valve to reduce its opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate at an opening greater than a preset opening, and / or controlling the third control valve to operate at an opening greater than a preset opening include: during the first mode of operation of the heat pump system, when the first temperature is less than or equal to the second temperature, controlling the first control valve to reduce its opening, and controlling the second control valve to operate at an opening greater than the preset opening.

[0124] The steps of controlling the first target control valve to operate at a degree less than or equal to the current opening when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: during the operation of the first mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, controlling the first control valve to operate at a degree less than or equal to the current opening, and controlling the second control valve to operate at a degree greater than or equal to the current opening.

[0125] Wherein, during the operation of the first mode: the outdoor heat exchanger is connected to the exhaust port of the compressor, the indoor heat exchanger is connected to the return port of the compressor, the first control valve is throttled, the second control valve is opened, and the third control valve is operated with an opening less than or equal to the minimum opening. The first target control valve is the first control valve, and the second target control valve is the second control valve.

[0126] The first temperature and the second temperature are obtained during the operation of the heat pump system in the first mode.

[0127] In this embodiment, the heat pump system includes the above-mentioned first four-way valve and second four-way valve. When the heat pump system starts the first mode, the first control valve can be controlled to operate in throttling mode, the second control valve can be controlled to operate at an opening greater than a preset opening (e.g., a maximum opening), and the third control valve can be controlled to close or operate at a minimum opening. The refrigerant discharged from the compressor in the refrigerant main circuit flows through the outdoor heat exchanger, the second control valve, the heat dissipation module, the first control valve, and the indoor heat exchanger in sequence and then flows back to the compressor, wherein the energy storage device stops storing energy. In the first mode, the indoor heat exchanger is in an evaporating state, and the outdoor heat exchanger is in a condensing state.

[0128] In this embodiment, when the heat pump system is used for cooling alone without storing energy, the two control valves on the inlet and outlet of the heat dissipation module are used to adjust and control the system according to the current condensation risk at the same time, which is beneficial to improving the system's anti-condensation adjustment ability and reducing the condensation risk of the heat dissipation module in the system's single cooling mode.

[0129] In other embodiments, the heat pump system is also not provided with a reversing component, and the heat pump system can also be controlled in the above manner when it is turned on and operates in the first mode.

[0130] Furthermore, in a second implementation of the present embodiment, the steps of controlling the first target control valve to reduce its opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate at an opening greater than a preset opening, and / or controlling the third control valve to operate at an opening greater than a preset opening include: during the operation of the heat pump system in the second mode, when the first temperature is less than or equal to the second temperature, controlling the second control valve to reduce its opening, and controlling the first control valve to operate at an opening greater than the preset opening.

[0131] The steps of controlling the first target control valve to operate at a degree less than or equal to the current opening when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: during the operation of the second mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, controlling the second control valve to operate at a degree less than or equal to the current opening, and controlling the first control valve to operate at a degree greater than or equal to the current opening.

[0132] Wherein, during the operation of the second mode: the indoor heat exchanger is connected to the exhaust port of the compressor, the outdoor heat exchanger is connected to the return air port of the compressor, the first control valve is opened, the second control valve operates in throttling mode, and the third control valve operates at an opening less than or equal to the minimum opening.

[0133] The first temperature and the second temperature are obtained during the operation of the heat pump system in the second mode.

[0134] In this embodiment, the heat pump system includes the above-mentioned first four-way valve and second four-way valve. When the heat pump system starts the second mode, the first control valve can be controlled to open with an opening greater than the preset opening (for example, the maximum opening), the second control valve can be controlled to operate in throttling, and the third control valve can be controlled to close or open with the minimum opening. The refrigerant discharged from the compressor flows through the indoor heat exchanger, the first control valve, the heat dissipation module, the second control valve, and the outdoor heat exchanger in sequence and then flows back to the compressor, wherein the energy storage device stops storing energy. In the second mode, the indoor heat exchanger is in a condensing state, and the outdoor heat exchanger is in an evaporating state. The first target control valve is the second control valve, and the second target control valve is the first control valve.

[0135] In this embodiment, when the heat pump system is used for heating alone without storing energy, the two control valves on the inlet and outlet of the heat dissipation module are used to adjust and control the heat dissipation module according to the current condensation risk at the same time, which is beneficial to improving the system's anti-condensation adjustment ability and reducing the condensation risk of the heat dissipation module in the system's single heating mode.

[0136] In other embodiments, the heat pump system is also not provided with a reversing component, and the heat pump system can also be controlled in the above manner when it is turned on and fixedly operates in the second mode.

[0137] Furthermore, in a third implementation of the present embodiment, the steps of controlling the first target control valve to reduce its opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate at an opening greater than a preset opening, and / or controlling the third control valve to operate at an opening greater than a preset opening include: during the operation of the heat pump system in the third mode, when the first temperature is less than or equal to the second temperature, controlling the second control valve to reduce its opening, and controlling the third control valve to operate at an opening greater than a preset opening.

[0138] The steps of controlling the first target control valve to operate at a degree less than or equal to the current opening when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: during the operation of the third mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, controlling the second control valve to operate at a degree greater than or equal to the current opening, and controlling the third control valve to operate at a degree greater than or equal to the current opening.

[0139] Among them, during the operation of the third mode: the indoor heat exchanger is connected to the return air port of the compressor, the outdoor heat exchanger is connected to the return air port of the compressor, the third control valve operates with an opening greater than the minimum opening, the second control valve operates in throttling, and the first control valve is closed.

[0140] The first temperature and the second temperature are obtained during the operation of the heat pump system in the third mode.

[0141] In this embodiment, the heat pump system includes the above-mentioned first four-way valve and second four-way valve. When the heat pump system starts the third mode, the first control valve is closed or operates at the minimum opening, the third control valve operates at an opening greater than the preset opening (e.g., the maximum opening), the second control valve operates at a throttling operation, the first four-way valve operates at the second valve position, the second four-way valve operates at the third valve position, and the refrigerant flowing out of the compressor flows through the refrigerant branch, the heat dissipation module, the second control valve, and the outdoor heat exchanger in sequence before flowing back to the compressor. In the third mode, the outdoor heat exchanger is in an evaporating state. The second target control valve is the second control valve.

[0142] In this embodiment, when the heat pump system stores energy alone without exchanging heat, the control valve on the outlet of the heat dissipation module and the control valve on the refrigerant branch are simultaneously adjusted to adapt to the current condensation risk, which is beneficial to improving the system's anti-condensation adjustment ability and reducing the condensation risk of the heat dissipation module in the system's single energy storage mode.

[0143] In other embodiments, the heat pump system is also not provided with a reversing component, and the heat pump system can also be controlled in the above manner when it is turned on and fixedly operates in the third mode.

[0144] Furthermore, in a fourth implementation of the present embodiment, the steps of controlling the first target control valve to reduce its opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate at an opening greater than a preset opening, and / or controlling the third control valve to operate at an opening greater than a preset opening include: during the fourth mode of operation of the heat pump system, when the first temperature is less than or equal to the second temperature, controlling the first control valve to reduce its opening, controlling the second control valve to operate at an opening greater than the preset opening, and controlling the third control valve to operate at an opening greater than the preset opening.

[0145] The steps of controlling the first target control valve to operate at a degree less than or equal to the current opening when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: during the operation of the heat pump system in the fourth mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, controlling the first control valve to operate at a degree less than or equal to the current opening, controlling the second control valve to operate at a degree greater than or equal to the current opening, and controlling the third control valve to operate at a degree greater than or equal to the current opening.

[0146] Among them, during the operation of the fourth mode: the outdoor heat exchanger is connected to the exhaust port of the compressor, the indoor heat exchanger is connected to the return air port of the compressor, the first control valve operates in throttling mode, the second control valve is opened, and the third control valve is opened with an opening greater than the minimum opening.

[0147] The first temperature and the second temperature are obtained during the operation of the heat pump system in the fourth mode.

[0148] In this embodiment, the heat pump system includes the above-mentioned first four-way valve and second four-way valve. When the heat pump system starts the fourth mode, the first control valve is controlled to operate in throttling mode, the third control valve is controlled to open at an opening greater than a preset opening (e.g., a maximum opening), and the second control valve is controlled to operate at an opening greater than or equal to a preset opening (e.g., a maximum opening). The first four-way valve operates at the first valve position, and the second four-way valve operates at the fourth valve position. The refrigerant discharged from the compressor in the refrigerant main circuit flows through the outdoor heat exchanger, the second control valve, the heat dissipation module, the first control valve, and the indoor heat exchanger in turn and then flows back to the compressor, wherein part of the refrigerant flowing through the refrigerant main circuit can flow through the refrigerant branch and store energy in the energy storage device. In the fourth mode, the indoor heat exchanger is in an evaporating state, and the outdoor heat exchanger is in a condensing state. The first target control valve is the first control valve, and the second target control valve is the second control valve.

[0149] In the fourth mode, the indoor heat exchanger is in an evaporating state and absorbs heat, the outdoor heat exchanger is in a condensing state and releases heat, and the heat pump system is in a partial heat recovery state. Heat can be absorbed into the system through the indoor heat exchanger, and excess heat in the refrigerant can be stored in the energy storage device.

[0150] In this embodiment, when the heat pump system is cooling and storing energy at the same time, the two control valves on the inlet and outlet of the heat dissipation module and the control valve on the refrigerant branch are adjusted and regulated according to the current condensation risk at the same time, which is beneficial to improving the system's anti-condensation adjustment ability and reducing the condensation risk of the heat dissipation module when the system is in the cooling and energy storage mode.

[0151] In other embodiments, the heat pump system is also not provided with a reversing component, and the heat pump system can also be controlled in the above manner when it is turned on and fixedly operates in the fourth mode.

[0152] Furthermore, in a fifth implementation of the present embodiment, the steps of controlling the first target control valve to reduce its opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate at an opening greater than a preset opening, and / or controlling the third control valve to operate at an opening greater than a preset opening include: during the operation of the fifth mode of the heat pump system, when the first temperature is less than or equal to the second temperature, controlling the first control valve to reduce its opening, controlling the second control valve to reduce its opening, and controlling the third control valve to operate at an opening greater than a preset opening.

[0153] The steps of controlling the first target control valve to operate at a degree less than or equal to the current opening when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: during the operation of the fifth mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, controlling the first control valve to operate at a degree less than or equal to the current opening, controlling the second control valve to operate at a degree less than or equal to the current opening, and controlling the third control valve to operate at a degree greater than or equal to the current opening.

[0154] Wherein, during the operation of the fifth mode: the outdoor heat exchanger and the indoor heat exchanger are both connected to the return air port of the compressor, the first control valve and the second control valve are both throttling operation, and the third control valve is opened with an opening greater than the minimum opening.

[0155] The first temperature and the second temperature are obtained during the operation of the heat pump system in the fifth mode.

[0156] In this embodiment, the heat pump system includes the above-mentioned first four-way valve and second four-way valve. When the heat pump system starts the fifth mode, the first control valve and the second control valve are controlled to operate in throttling mode, the third control valve is controlled to open with an opening greater than a preset opening (e.g., a maximum opening), the first four-way valve is controlled to operate in the first valve position, and the second four-way valve is controlled to operate in the third valve position. The refrigerant discharged from the compressor first flows into the refrigerant branch and stores energy in the energy storage device. A part of the refrigerant flowing out of the refrigerant branch flows through the first control valve and the indoor heat exchanger and then flows back to the compressor. Another part of the refrigerant flowing out of the refrigerant branch flows through the heat dissipation module, the second control valve, and the outdoor heat exchanger and then flows back to the compressor. In the fifth mode, the indoor heat exchanger is in an evaporating state, and the outdoor heat exchanger is in an evaporating state. The first control valve and the second control valve are both first target control valves.

[0157] In the fifth mode, both the indoor heat exchanger and the outdoor heat exchanger are in an evaporation state to absorb heat, and the heat pump system is in a full heat recovery state. The heat from the indoor and outdoor environments can be absorbed into the system through the indoor heat exchanger and the outdoor heat exchanger respectively, and the excess heat in the refrigerant can be stored in the energy storage device. Among them, the energy stored in the energy storage device in the fifth mode is more than the energy stored in the energy storage device in the fourth mode.

[0158] In this embodiment, when the heat pump system is cooling and storing energy at the same time, the two control valves on the inlet and outlet of the heat dissipation module and the control valve on the refrigerant branch are adjusted and regulated according to the current condensation risk at the same time, which is beneficial to improving the system's anti-condensation adjustment ability and reducing the condensation risk of the heat dissipation module when the system is in the cooling and energy storage mode.

[0159] In other embodiments, the heat pump system is also not provided with a reversing component, and the heat pump system can also be controlled in the above manner when it is turned on and fixedly operates in the fifth mode.

[0160] Furthermore, in a sixth implementation of the present embodiment, the steps of controlling the first target control valve to reduce its opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate at an opening greater than a preset opening, and / or controlling the third control valve to operate at an opening greater than a preset opening include: during the sixth mode of operation of the heat pump system, when the first temperature is less than or equal to the second temperature, controlling the first control valve to operate at an opening greater than the preset opening, controlling the second control valve to reduce its opening, and controlling the third control valve to operate at an opening greater than the preset opening.

[0161] The steps of controlling the first target control valve to operate at a degree less than or equal to the current opening when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: during the operation of the sixth mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, controlling the first control valve to operate at a degree greater than or equal to the current opening, controlling the second control valve to operate at a degree less than or equal to the current opening, and controlling the third control valve to operate at a degree greater than or equal to the current opening.

[0162] Among them, during the operation of the sixth mode: the outdoor heat exchanger is connected to the return air port of the compressor, the indoor heat exchanger is connected to the exhaust port of the compressor, the first control valve is opened, the second control valve is throttling operation, and the third control valve is opened with an opening greater than the minimum opening.

[0163] The first temperature and the second temperature are obtained during the operation of the heat pump system in the sixth mode.

[0164] In this embodiment, the heat pump system includes the above-mentioned first four-way valve and second four-way valve. When the heat pump system starts the sixth mode, the first control valve and the third control valve are controlled to operate at an opening greater than a preset opening (e.g., a maximum opening), the second control valve is controlled to operate in throttling mode, the first four-way valve is controlled to operate in the second valve position, and the second four-way valve is controlled to operate in the third valve position. The refrigerant discharged from the compressor flows through the indoor heat exchanger, the first control valve, the heat dissipation module, the second control valve, and the outdoor heat exchanger in sequence and then flows back to the compressor, wherein part of the refrigerant flowing through the refrigerant main circuit can flow through the refrigerant branch circuit and store energy in the energy storage device. In the sixth mode, the indoor heat exchanger is in a condensing state and the outdoor heat exchanger is in an evaporating state. The first target control valve is the second control valve, and the second target control valve is the first control valve.

[0165] In this embodiment, when the heat pump system is heating and storing energy at the same time, the two control valves on the inlet and outlet of the heat dissipation module and the control valve on the refrigerant branch are adjusted and controlled according to the current condensation risk at the same time, which is beneficial to improve the system's anti-condensation adjustment ability and reduce the condensation risk of the heat dissipation module when the system is heating and storing energy in the mode.

[0166] In other embodiments, the heat pump system is also not provided with a reversing component, and the heat pump system can also be controlled in the above manner when it is turned on and fixedly operates in the sixth mode.

[0167] Furthermore, when the heat pump system is turned on in a preset mode, the indoor heat exchanger corresponding to the preset mode is in an evaporating state, and the demand state of the heat pump system can be obtained. When the demand state is that the cooling demand of the indoor heat exchanger is greater than or equal to the energy storage demand of the energy storage device, the heat pump system is controlled to operate in the fourth mode; when the demand state is that the cooling demand of the indoor heat exchanger is less than the energy storage demand of the energy storage device, the heat pump system is controlled to operate in the fifth mode.

[0168] Among them, a first temperature difference between the indoor temperature of the indoor environment where the indoor heat exchanger is located and the set temperature can be obtained, and a second temperature difference between the current temperature of the energy storage device and the target energy storage temperature can be obtained, and the demand state here is determined according to the first temperature difference and the second temperature difference. For example, when the first temperature difference is greater than or equal to the second temperature difference, the cooling demand is greater than or equal to the energy storage demand; when the first temperature difference is less than the second temperature difference, the cooling demand is less than the energy storage demand. In other embodiments, a first ratio of the indoor temperature to the set temperature can also be determined, and a second ratio of the current temperature of the energy storage device to the target energy storage temperature can be determined, and the demand state here is determined according to the first ratio and the second ratio.

[0169] In this embodiment, when the cooling demand is greater than the energy storage demand, a partial heat recovery method such as indoor heat exchanger absorbing heat and outdoor heat exchanger releasing heat is used for cooling operation, which is beneficial to avoid excessive heat recovery affecting the cooling capacity of the heat pump system, thereby improving the cooling comfort of the indoor environment while storing energy; when the cooling demand is smaller than the energy storage demand, a full heat recovery method such as indoor and outdoor heat exchangers absorbing heat is used for cooling operation, which is beneficial to meet the indoor cooling comfort while ensuring that the system has enough heat to meet the energy storage demand of the energy storage device, thereby improving the energy storage efficiency of the refrigeration process.

[0170] Further, based on any of the above embodiments, another embodiment of the control method of the heat pump system of the present application is proposed. In this embodiment, the step of controlling the operation of the outdoor heat exchanger according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes:

[0171] When the outdoor heat exchanger is in a condensing state, and when the first temperature is less than or equal to the second temperature, controlling the outdoor fan to operate at a reduced speed;

[0172] When the outdoor heat exchanger is in a condensing state, and when the first temperature is greater than the second temperature, and the first temperature is less than or equal to a third temperature, controlling the outdoor fan to operate at a rotation speed less than or equal to a current rotation speed;

[0173] The third temperature is obtained by increasing the second temperature by a preset adjustment value.

[0174] The third temperature here is the same concept as the third temperature mentioned above and will not be elaborated here.

[0175] The operation of the outdoor fan at a speed less than or equal to the current speed means that the speed of the outdoor fan is prohibited from decreasing. The outdoor fan may maintain the current speed or reduce the speed according to the actual operation of the heat pump system.

[0176] The speed adjustment value when the outdoor fan reduces the speed can be a preset fixed adjustment value, such as reducing one wind speed. The speed adjustment value when the outdoor fan reduces the speed can also be a value determined according to the actual operation of the heat pump system. For example, the speed adjustment value can be determined according to the temperature difference between the current temperature of the energy storage device and the set temperature and / or the energy demand value of the indoor unit in the current mode and / or the temperature difference between the first temperature and the second temperature and / or the current opening of the second control valve and / or the current opening of the first control valve and / or the current opening of the third control valve and / or the current temperature of the outdoor heat exchanger, thereby reducing the risk of condensation while meeting the heat exchange requirements of the current mode and improving the reliability of system operation.

[0177] Specifically, in the above-mentioned first mode or fourth mode, the outdoor heat exchanger is in a condensing state. When the first temperature is less than or equal to the second temperature, the outdoor fan can be controlled to reduce the speed of operation; when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the outdoor fan can be controlled to operate at a speed less than or equal to the current speed.

[0178] Among them, while adjusting the opening of at least one of the first control valve, the second control valve and the third control valve according to the first temperature and the second temperature in the manner mentioned in the above embodiment, the speed of the outdoor fan is controlled in the manner mentioned in this embodiment.

[0179] In this embodiment, when the outdoor heat exchanger is in a condensing state, the outdoor fan speed is coordinated with the opening adjustment of the control valve to ensure that the system condensation pressure can be effectively increased, thereby effectively eliminating the condensation risk of the heat dissipation module.

[0180] Further, based on any of the above embodiments, another embodiment of the control method of the heat pump system of the present application is proposed. In this embodiment, the step of controlling the operation of the outdoor heat exchanger according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes:

[0181] When the outdoor heat exchanger is in an evaporating state and when the first temperature is less than or equal to the second temperature, controlling the outdoor fan to increase the speed of operation;

[0182] When the outdoor heat exchanger is in an evaporating state, and when the first temperature is greater than the second temperature, and the first temperature is less than or equal to a third temperature, controlling the outdoor fan to operate at a speed greater than or equal to a current speed;

[0183] The third temperature is obtained by increasing the second temperature by a preset adjustment value.

[0184] The third temperature here is the same concept as the third temperature mentioned above and will not be elaborated here.

[0185] The operation of the outdoor fan at a speed greater than or equal to the current speed means that the speed of the outdoor fan is prohibited from increasing. The outdoor fan can maintain the current speed or increase the speed according to the actual operation of the heat pump system.

[0186] The speed adjustment value when the outdoor fan increases the speed can be a preset fixed adjustment value, such as reducing one wind speed. The speed adjustment value when the outdoor fan increases the speed can also be a value determined according to the actual operation of the heat pump system. For example, the speed adjustment value can be determined according to the temperature difference between the current temperature of the energy storage device and the set temperature and / or the energy demand value of the indoor unit in the current mode and / or the temperature difference between the first temperature and the second temperature and / or the current opening of the second control valve and / or the current opening of the first control valve and / or the current opening of the third control valve and / or the current temperature of the outdoor heat exchanger, thereby reducing the risk of condensation while meeting the heat exchange requirements of the current mode and improving the reliability of system operation.

[0187] Specifically, in the above-mentioned second mode or third mode or fifth mode or sixth mode, the outdoor heat exchanger is in an evaporating state. When the first temperature is less than or equal to the second temperature, the outdoor fan can be controlled to increase the speed of operation; when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the outdoor fan can be controlled to operate at a speed greater than or equal to the current speed.

[0188] Among them, while adjusting the opening of at least one of the first control valve, the second control valve and the third control valve according to the first temperature and the second temperature in the manner mentioned in the above embodiment, the speed of the outdoor fan is controlled in the manner mentioned in this embodiment.

[0189] In this embodiment, when the outdoor heat exchanger is in an evaporating state, the outdoor fan speed is coordinated with the opening adjustment of the control valve to ensure that the system condensation pressure can be effectively increased, thereby effectively eliminating the condensation risk of the heat dissipation module.

[0190] In addition, an embodiment of the present invention further proposes a storage medium, on which a control program of a heat pump system is stored. When the control program of the heat pump system is executed by a processor, the relevant steps of any embodiment of the control method of the heat pump system are implemented.

[0191] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0192] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0193] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, including a number of instructions for a terminal device (which can be a mobile phone, computer, server, heat pump system, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0194] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A control method for a heat pump system, characterized in that: The heat pump system includes a refrigerant main circuit and a refrigerant branch circuit connected to the refrigerant main circuit, the refrigerant main circuit includes a connected indoor heat exchanger, a first control valve, a heat dissipation module, a second control valve and an outdoor heat exchanger, the heat dissipation module is used to dissipate heat from a heat generating component, the refrigerant branch circuit includes a third control valve and an energy storage device, and the control method of the heat pump system includes the following steps: Acquire a first temperature of the heat dissipation module and a second temperature of an environment where the heat dissipation module is located; The operation of at least one of the first control valve, the second control valve and the third control valve is controlled according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module, and / or the operation of the outdoor fan corresponding to the outdoor heat exchanger is controlled according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module.

2. The control method of the heat pump system according to claim 1, characterized in that: The refrigerant main circuit also includes a compressor connected to the indoor heat exchanger and the outdoor heat exchanger respectively, the first end of the refrigerant branch is connected to the exhaust port of the compressor, or the first end of the refrigerant branch is connected to the exhaust port or return port of the compressor through a reversing component, the pipeline between the heat dissipation module and the first control valve is connected to the second end of the refrigerant branch, the control valve of the first control valve and the second control valve that is not located in the refrigerant inflow direction of the heat dissipation module is defined as the first target control valve, and the control valve of the first control valve and the second control valve that is located in the refrigerant inflow direction of the heat dissipation module is defined as the second target control valve, and the step of controlling the operation of at least one of the first control valve, the second control valve and the third control valve according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes: When the first temperature is less than or equal to the second temperature, the first target control valve is controlled to operate with a reduced opening, and / or the second target control valve is controlled to operate with an opening greater than a preset opening, and / or the third control valve is controlled to operate with an opening greater than a preset opening; When the first temperature is greater than the second temperature, and the first temperature is less than or equal to the third temperature, the first target control valve is controlled to operate at a degree less than or equal to the current opening, and / or the second target control valve is controlled to operate at a degree greater than or equal to the current opening, and / or the third control valve is controlled to operate at a degree greater than or equal to the current opening; The third temperature is obtained by increasing the second temperature by a preset adjustment value.

3. The control method of the heat pump system according to claim 2, characterized in that: The step of controlling the first target control valve to reduce the opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises: During the operation of the heat pump system in the first mode, when the first temperature is less than or equal to the second temperature, the first control valve is controlled to reduce its opening, and the second control valve is controlled to operate at an opening greater than a preset opening; When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: During the operation of the first mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to a third temperature, the first control valve is controlled to operate at a degree of opening less than or equal to a current degree of opening, and the second control valve is controlled to operate at a degree of opening greater than or equal to a current degree of opening; Among them, during the operation of the first mode: the outdoor heat exchanger is connected to the exhaust port of the compressor, the indoor heat exchanger is connected to the return air port of the compressor, the first control valve operates in throttling mode, the second control valve is opened, and the third control valve operates with an opening less than or equal to the minimum opening.

4. The control method of the heat pump system according to claim 2, characterized in that: The step of controlling the first target control valve to reduce the opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises: During the operation of the heat pump system in the second mode, when the first temperature is less than or equal to the second temperature, the second control valve is controlled to reduce its opening, and the first control valve is controlled to operate at an opening greater than a preset opening; When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: During the operation of the heat pump system in the second mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to a third temperature, the second control valve is controlled to operate at a degree of opening less than or equal to a current degree of opening, and the first control valve is controlled to operate at a degree of opening greater than or equal to a current degree of opening; Wherein, during the operation of the second mode: the indoor heat exchanger is connected to the exhaust port of the compressor, the outdoor heat exchanger is connected to the return air port of the compressor, the first control valve is opened, the second control valve operates in throttling mode, and the third control valve operates at an opening less than or equal to the minimum opening.

5. The control method of the heat pump system according to claim 2, characterized in that: The step of controlling the first target control valve to reduce the opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises: During the operation of the heat pump system in the third mode, when the first temperature is less than or equal to the second temperature, the second control valve is controlled to reduce its opening, and the third control valve is controlled to operate at an opening greater than a preset opening; When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: During the operation of the heat pump system in the third mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the second control valve is controlled to operate at a degree greater than or equal to the current opening, and the third control valve is controlled to operate at a degree greater than or equal to the current opening; Among them, during the operation of the third mode: the indoor heat exchanger is connected to the return air port of the compressor, the outdoor heat exchanger is connected to the return air port of the compressor, the third control valve operates with an opening greater than the minimum opening, the second control valve operates in throttling, and the first control valve is closed.

6. The control method of the heat pump system according to claim 2, characterized in that: The step of controlling the first target control valve to reduce the opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises: During the operation of the heat pump system in the fourth mode, when the first temperature is less than or equal to the second temperature, the first control valve is controlled to reduce its opening, the second control valve is controlled to operate at an opening greater than a preset opening, and the third control valve is controlled to operate at an opening greater than a preset opening; When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: During the operation of the heat pump system in the fourth mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to a third temperature, the first control valve is controlled to operate at a degree less than or equal to a current opening, the second control valve is controlled to operate at a degree greater than or equal to a current opening, and the third control valve is controlled to operate at a degree greater than or equal to a current opening; Among them, during the operation of the fourth mode: the outdoor heat exchanger is connected to the exhaust port of the compressor, the indoor heat exchanger is connected to the return air port of the compressor, the first control valve operates in throttling mode, the second control valve is opened, and the third control valve is opened with an opening greater than the minimum opening.

7. The control method of the heat pump system according to claim 2, characterized in that: The step of controlling the first target control valve to reduce the opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises: During the operation of the fifth mode of the heat pump system, when the first temperature is less than or equal to the second temperature, the first control valve is controlled to operate with a reduced opening, the second control valve is controlled to operate with a reduced opening, and the third control valve is controlled to operate with an opening greater than a preset opening; When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: During the operation of the fifth mode of the heat pump system, when the first temperature is greater than the second temperature and the first temperature is less than or equal to a third temperature, the first control valve is controlled to operate at a degree less than or equal to a current opening, the second control valve is controlled to operate at a degree less than or equal to a current opening, and the third control valve is controlled to operate at a degree greater than or equal to a current opening; Wherein, during the operation of the fifth mode: the outdoor heat exchanger and the indoor heat exchanger are both connected to the return air port of the compressor, the first control valve and the second control valve are both throttling operation, and the third control valve is opened with an opening greater than the minimum opening.

8. The control method of the heat pump system according to claim 2, characterized in that: The step of controlling the first target control valve to reduce the opening when the first temperature is less than or equal to the second temperature, and / or controlling the second target control valve to operate with an opening greater than a preset opening, and / or controlling the third control valve to operate with an opening greater than a preset opening comprises: During the sixth operation mode of the heat pump system, when the first temperature is less than or equal to the second temperature, the first control valve is controlled to operate at an opening greater than a preset opening, the second control valve is controlled to operate at a reduced opening, and the third control valve is controlled to operate at an opening greater than a preset opening; When the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the steps of controlling the first target control valve to operate at a degree less than or equal to the current opening, and / or controlling the second target control valve to operate at a degree greater than or equal to the current opening, and / or controlling the third control valve to operate at a degree greater than or equal to the current opening include: During the operation of the heat pump system in the sixth mode, when the first temperature is greater than the second temperature and the first temperature is less than or equal to the third temperature, the first control valve is controlled to operate at a degree greater than or equal to the current opening, the second control valve is controlled to operate at a degree less than or equal to the current opening, and the third control valve is controlled to operate at a degree greater than or equal to the current opening; Among them, during the operation of the sixth mode: the outdoor heat exchanger is connected to the return air port of the compressor, the indoor heat exchanger is connected to the exhaust port of the compressor, the first control valve is opened, the second control valve is throttling operation, and the third control valve is opened with an opening greater than the minimum opening.

9. The control method of a heat pump system according to any one of claims 1 to 8, characterized in that: The step of controlling the operation of the outdoor heat exchanger according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes: When the outdoor heat exchanger is in a condensing state, and when the first temperature is less than or equal to the second temperature, controlling the outdoor fan to operate at a reduced speed; When the outdoor heat exchanger is in a condensing state, and when the first temperature is greater than the second temperature, and the first temperature is less than or equal to a third temperature, controlling the outdoor fan to operate at a rotation speed less than or equal to a current rotation speed; The third temperature is obtained by increasing the second temperature by a preset adjustment value.

10. The control method of a heat pump system according to any one of claims 1 to 8, characterized in that: The step of controlling the operation of the outdoor heat exchanger according to the first temperature and the second temperature to reduce the condensation risk of the heat dissipation module includes: When the outdoor heat exchanger is in an evaporating state and when the first temperature is less than or equal to the second temperature, controlling the outdoor fan to increase the speed of operation; When the outdoor heat exchanger is in an evaporating state, and when the first temperature is greater than the second temperature, and the first temperature is less than or equal to a third temperature, controlling the outdoor fan to operate at a speed greater than or equal to a current speed; The third temperature is obtained by increasing the second temperature by a preset adjustment value.

11. A heat pump system, characterized in that: The heat pump system includes a control device, a refrigerant main circuit and a refrigerant branch circuit connected to the refrigerant main circuit, the refrigerant main circuit includes a connected indoor heat exchanger, a first control valve, a heat dissipation module, a second control valve and an outdoor heat exchanger, the heat dissipation module is used to dissipate heat from the heat generating components, the refrigerant branch circuit includes a third control valve and an energy storage device, and the outdoor heat exchanger is provided with a corresponding outdoor fan; The first control valve, the second control valve, the third control valve and the outdoor fan are all connected to the control device, which includes: a memory, a processor and a control program of the heat pump system stored in the memory and executable on the processor, wherein the control program of the heat pump system implements the steps of the control method of the heat pump system as described in any one of claims 1 to 10 when executed by the processor.

12. A storage medium, characterized in that: The storage medium stores a control program of the heat pump system, and when the control program of the heat pump system is executed by the processor, the steps of the control method of the heat pump system according to any one of claims 1 to 10 are implemented.

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