Multi-energy coupling operation control method and multi-energy coupling system

Abstract

According to the multi-energy coupling operation control method and the multi-energy coupling system, in the coupling operation process of an auxiliary heat source and a heat pump, when a defrosting request of the heat pump is received, the water inlet temperature of the auxiliary heat source is recorded as the initial water inlet temperature, and when a signal that the heat pump enters a defrosting operation mode is received, the initial water inlet temperature is recorded as the initial water inlet temperature; the water inlet temperature of the auxiliary heat source is recorded as the first water inlet temperature, and the first load needing to be increased at the first collection moment of the auxiliary heat source is calculated based on the temperature difference between the initial water inlet temperature and the first water inlet temperature by taking the received signal indicating that the heat pump enters the defrosting operation mode as the first collection moment; when the heat pump is in the defrosting operation mode, the lowest water inlet temperature of the auxiliary heat source and the collection moment of the lowest water inlet temperature are determined, and a second load needing to be increased at the collection moment of the lowest water inlet temperature of the auxiliary heat source is calculated based on the temperature difference between the initial water inlet temperature and the lowest water inlet temperature; the water supply temperature fluctuation amplitude of the water system can be reduced, and user experience is improved.

Description

Technical Field

[0001] The present invention relates to heating technology, and in particular to a multi-energy coupling operation control method and a multi-energy coupling system. Background Art

[0002] Heat pump water heaters, also known as air-energy water heaters, are electrical appliances that absorb heat energy from the air to heat water through the operation of a heat pump. They are environmentally friendly and energy-saving. However, in environments with low ambient temperatures, the performance coefficient of heat pumps decreases significantly, and they may even fail to start normally, resulting in technical restrictions on the promotion of heat pumps. In response to this situation, one of the current solutions is to couple the auxiliary heat source with the heat pump. When the ambient temperature is low and the heat pump heating capacity is insufficient, the heat pump and the auxiliary heat source can be coupled to heat the water and ensure a stable heat supply.

[0003] During the operation of the heat pump coupled with the auxiliary heat source, due to the low ambient temperature, the fin surface of the heat pump evaporator will frost. When the frost reaches a certain thickness, the air inlet to the evaporator is blocked, resulting in a decrease in the heating efficiency of the heat pump, and a defrosting operation is required. The defrosting process will cause the water supply temperature of the water system to fluctuate greatly, affecting the user experience. Summary of the invention

[0004] One of the technical problems solved by the present invention is to provide a multi-energy coupling operation control method, which can reduce the fluctuation amplitude of water supply temperature of the water system and improve user experience.

[0005] The second technical problem solved by the present invention is to provide a multi-energy coupling system, which can reduce the fluctuation amplitude of water supply temperature of the water system and improve user experience.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A multi-energy coupling operation control method, comprising:

[0008] During the coupled operation of the auxiliary heat source and the heat pump, upon receiving a defrost request from the heat pump, recording the inlet water temperature of the auxiliary heat source as the initial inlet water temperature, and controlling the heat pump to enter a defrost operation mode;

[0009] When receiving a signal that the heat pump enters a defrost operation mode, recording the water inlet temperature of the auxiliary heat source as the first water inlet temperature, and taking the time when the heat pump enters the defrost operation mode as the first collection time;

[0010] Calculating a first load that needs to be increased by the auxiliary heat source at the first collection time based on a temperature difference between the initial water inlet temperature and the first water inlet temperature;

[0011] At the first collection moment, increasing the first load based on the current load of the auxiliary heat source;

[0012] When the heat pump is in the defrosting operation mode, continuously collecting the water inlet temperature of the auxiliary heat source, and determining the minimum water inlet temperature of the auxiliary heat source and the collection time of the minimum water inlet temperature;

[0013] Based on the temperature difference between the initial water inlet temperature and the minimum water inlet temperature, calculating the second load that the auxiliary heat source needs to increase at the time of collecting the minimum water inlet temperature;

[0014] At the time of collecting the lowest inlet water temperature, the second load is increased on the basis of the current load of the auxiliary heat source.

[0015] The multi-energy coupling operation control method provided by the present invention, during the coupled operation of the auxiliary heat source and the heat pump, when a defrost request of the heat pump is received, the inlet water temperature of the auxiliary heat source is recorded as the initial inlet water temperature, and when a signal of the heat pump entering the defrost operation mode is received, the inlet water temperature of the auxiliary heat source is recorded as the first inlet water temperature, and the time when the signal of the heat pump entering the defrost operation mode is received is taken as the first collection moment, based on the temperature difference between the initial inlet water temperature and the first inlet water temperature, the first load that needs to be added to the auxiliary heat source at the first collection moment is calculated, and at the first collection moment, the first load is increased on the basis of the current load of the auxiliary heat source. Since the heat pump stops supplying heat and has not yet started when it enters the defrost operation mode, During defrosting, the heat lost by the heat pump when it does not supply heat can be calculated, so the load of the auxiliary heat source can be accurately adjusted at the first collection time, thereby avoiding the situation in the prior art where the auxiliary heat source load is repeatedly adjusted during the heat pump stops supplying heat, resulting in large fluctuations in the outlet water temperature; and in the present application, when the heat pump is in the defrosting operation mode, the inlet water temperature of the auxiliary heat source is continuously collected, and the minimum inlet water temperature of the auxiliary heat source and the collection time of the minimum inlet water temperature are determined. Based on the temperature difference between the initial inlet water temperature and the minimum inlet water temperature, the second load that needs to be added to the auxiliary heat source at the collection time of the minimum inlet water temperature is calculated, and at the collection time of the minimum inlet water temperature, the second load is added on the basis of the current load of the auxiliary heat source. Since the heat pump continuously absorbs heat during the defrosting process, and the inlet water temperature of the auxiliary heat source is caused to decrease first and then increase during the entire defrosting process, when the inlet water temperature of the auxiliary heat source reaches the minimum, adding the second load to the current load of the auxiliary heat source can compensate for the heat lost during the defrosting process of the heat pump to the greatest extent, thereby avoiding the situation in which the auxiliary heat source load is repeatedly adjusted during the defrosting process, resulting in large fluctuations in the outlet water temperature, thereby improving the user experience.

[0016] In some embodiments of the present invention, based on the temperature difference between the initial water inlet temperature and the first water inlet temperature, a calculation formula for calculating the first load that needs to be increased by the auxiliary heat source at the first collection time is:

[0017]

[0018] Wherein, A1 is the first load that the auxiliary heat source needs to increase at the first collection time, a is an empirical value, T 0 is the initial water inlet temperature, T 1 is the first inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

[0019] In some embodiments of the present invention, determining the minimum water inlet temperature of the auxiliary heat source and the acquisition time of the minimum water inlet temperature includes:

[0020] Using the first water inlet temperature as an initial value of a reference temperature;

[0021] Obtaining the water inlet temperature of the auxiliary heat source collected at the i-th collection moment as the target temperature, where i is a positive integer greater than or equal to 2;

[0022] Determine whether the target temperature is less than the reference temperature;

[0023] If yes, the target temperature is used as the reference temperature;

[0024] Obtaining the water inlet temperature of the auxiliary heat source collected at the (i+1)th collection moment as the target temperature, and returning to execute the step of determining whether the target temperature is less than the reference temperature;

[0025] If not, the water inlet temperature collected at the i-1th collection time is used as the minimum water inlet temperature of the auxiliary heat source, and the i-1th collection time is used as the collection time of the minimum water inlet temperature.

[0026] In some embodiments of the present invention, based on the temperature difference between the initial water inlet temperature and the minimum water inlet temperature, a calculation formula for calculating the second load that the auxiliary heat source needs to increase at the time of collecting the minimum water inlet temperature is:

[0027]

[0028] Wherein, A2 is the second load that the auxiliary heat source needs to increase at the time of collecting the lowest inlet water temperature, T 0 is the initial water inlet temperature, T min is the minimum inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, P is the maximum load of the auxiliary heat source, and A1 is the first load.

[0029] In some embodiments of the present invention, the multi-energy coupling operation control method further includes:

[0030] During the operation of the auxiliary heat source, determining whether the auxiliary heat source is at maximum load;

[0031] If yes, then record the water supply temperature and water inlet temperature of the auxiliary heat source;

[0032] Calculating the temperature difference between the water supply temperature and the water inlet temperature of the auxiliary heat source at the maximum load, and returning to execute the step of determining whether the auxiliary heat source is at the maximum load;

[0033] If not, the process returns to the step of determining whether the auxiliary heat source is at the maximum load.

[0034] In some embodiments of the present invention, the multi-energy coupling operation control method further includes:

[0035] When receiving the defrost end signal of the heat pump, recording the water inlet temperature of the auxiliary heat source as the second water inlet temperature, and taking the time when the defrost end signal of the heat pump is received as the second collection time;

[0036] Calculating a third load that needs to be reduced by the auxiliary heat source at the second collection time based on the temperature difference between the second inlet water temperature and the lowest inlet water temperature;

[0037] At the second collection time, the third load is reduced based on the current load of the auxiliary heat source.

[0038] In some embodiments of the present invention, based on the temperature difference between the second inlet water temperature and the minimum inlet water temperature, a calculation formula for calculating the third load that needs to be reduced by the auxiliary heat source at the second collection time is:

[0039]

[0040] Wherein, A3 is the third load that the auxiliary heat source needs to reduce at the second collection time, T 2 is the second water inlet temperature, T min is the minimum inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

[0041] In some embodiments of the present invention, the multi-energy coupling operation control method further includes:

[0042] When the signal of the heat pump stable operation is received, the water inlet temperature of the auxiliary heat source is recorded as the third water inlet temperature, and the time when the signal of the heat pump stable operation is received is taken as the third collection time;

[0043] Calculating a fourth load that needs to be reduced by the auxiliary heat source at the third collection time based on a temperature difference between the third water inlet temperature and the second water inlet temperature;

[0044] At the third collection time, the fourth load is reduced based on the current load of the auxiliary heat source.

[0045] In some embodiments of the present invention, based on the temperature difference between the third inlet water temperature and the second inlet water temperature, a calculation formula for calculating the fourth load that the auxiliary heat source needs to reduce at the third collection time is:

[0046]

[0047] Wherein, A4 is the fourth load that the auxiliary heat source needs to reduce at the third collection time, T 3 is the third water inlet temperature, T 2 is the second inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

[0048] The above second technical problem is solved by the following technical solution:

[0049] A multi-energy coupling system, comprising:

[0050] A heat pump, wherein the heat pump has a water supply end and a water return end;

[0051] An auxiliary heat source, the auxiliary heat source having a water inlet and a water supply, the water inlet of the auxiliary heat source being connected to the water supply of the heat pump, the water supply of the auxiliary heat source being connected to a water-using device, and the water-using device being connected to a water return end of the heat pump through a water return pipe;

[0052] A controller is electrically connected to the heat pump and the auxiliary heat source respectively, and is used to execute the multi-energy coupling operation control method provided by any of the aforementioned embodiments of the present invention.

[0053] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0055] Figure 1 A flowchart of a multi-energy coupling operation control method provided by the present invention;

[0056] Figure 2 A flow chart for determining the minimum water inlet temperature of an auxiliary heat source and the acquisition time of the minimum water inlet temperature provided by the present invention;

[0057] Figure 3 A flow chart of another multi-energy coupling operation control method provided by the present invention;

[0058] Figure 4 The load curve diagram before and after optimization of auxiliary heat source load;

[0059] Figure 5 A graph of the water supply temperature of the water system before and after optimization for the auxiliary heat source load;

[0060] Figure 6 A schematic diagram of the structure of a multi-energy coupling system provided by the present invention;

[0061] Figure 7 A schematic diagram of the structure of a multi-energy coupling operation control device provided by the present invention;

[0062] Figure 8 The present invention provides a schematic structural diagram of an electronic device.

[0063] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0065] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] As mentioned above, during the operation of the heat pump coupled with the auxiliary heat source, the defrosting operation of the heat pump will cause the water supply temperature of the water system to fluctuate greatly. This is because: during normal operation, the compressor of the heat pump compresses the refrigerant into a high-temperature liquid or gas and sends it to the condenser of the heat pump. The refrigerant releases heat and cools in the condenser, heating the water. The cooled refrigerant flows through the expansion valve and is sent to the evaporator of the heat pump. The liquid refrigerant absorbs the heat of the external air in the evaporator and then vaporizes and is sent back to the compressor. In this cycle, the heat in the air is transferred to the water system. In the defrosting operation mode, the flow direction of the refrigerant is opposite to that in normal operation, that is, the compressor compresses the refrigerant into a high-temperature liquid or gas and sends it to the evaporator to melt the frost on the evaporator fins. The refrigerant releases heat and cools. The cooled refrigerant flows through the expansion valve and is sent to the condenser. Since the refrigerant temperature is low at this time, it will absorb the heat in the water system and send it back to the compressor. In this cycle, defrosting is performed. Since the cooler refrigerant sent to the condenser will absorb the heat in the water system, the outlet water temperature of the heat pump will drop. The defrosting process usually lasts for several minutes. After the defrosting is completed, the flow direction of the refrigerant returns to normal, the heat pump resumes heating, and the outlet water temperature of the heat pump rises. The water supply temperature of the water system fluctuates greatly during the defrosting process and the heating resumption process, and the fluctuation lasts for a long time, affecting the user experience.

[0067] Figure 1 This is a flow chart of a multi-energy coupling operation control method provided by the present invention. This embodiment can be used to solve the problem that the heat pump enters the defrosting operation mode during the coupled operation of the heat pump and the auxiliary heat source, resulting in large fluctuations in the outlet water temperature. The method can be executed by the multi-energy coupling operation control device provided by the embodiment of the present invention. The device can be implemented by software and / or hardware, and is usually configured in an electronic device, such as Figure 1 As shown, the multi-energy coupling operation control method specifically includes the following steps:

[0068] S101. During the coupled operation of the auxiliary heat source and the heat pump, upon receiving a defrost request from the heat pump, recording the inlet water temperature of the auxiliary heat source as the initial inlet water temperature, and controlling the heat pump to enter a defrost operation mode.

[0069] In an embodiment of the present invention, the heat pump may include a compressor, a four-way valve, a condenser, an expansion valve and an evaporator, the refrigerant outlet of the compressor is connected to the first end of the four-way valve, the second end of the four-way valve is connected to the refrigerant inlet of the condenser, the refrigerant outlet of the condenser is connected to the refrigerant inlet of the evaporator through the expansion valve, the refrigerant outlet of the evaporator is connected to the third end of the four-way valve, and the fourth end of the four-way valve is connected to the refrigerant inlet of the compressor. When the heat pump is operating normally, the four-way valve is in a first state, the compressor compresses the refrigerant into a high-temperature liquid or gas, enters from the first end of the four-way valve, exits from the second end, and is sent to the condenser, the refrigerant releases heat and cools in the condenser, heats the water, and the cooled refrigerant is sent to the evaporator after being throttled by the expansion valve, the liquid refrigerant absorbs the heat of the external air in the evaporator and then vaporizes, enters from the third end of the four-way valve, exits from the fourth end, and is sent back to the compressor, and the cycle is repeated to transfer the heat in the air to the water system. The water outlet of the condenser serves as the water supply end of the heat pump, the water inlet of the condenser serves as the water return end of the heat pump, the water inlet end of the auxiliary heat source is connected to the water supply end of the heat pump, the water supply end of the auxiliary heat source is connected to the water-using equipment, the auxiliary heat source can heat the water in the water system, the water-using equipment is connected to the water return end of the heat pump through the water return pipe, and the heat pump and the auxiliary heat source are coupled. Exemplarily, in the embodiment of the present invention, the auxiliary heat source can be a boiler, an electric water heater or other heating equipment, and the embodiment of the present invention is not limited here.

[0070] During the operation of the auxiliary heat source and the heat pump coupled, when a defrost request is received from the heat pump, the inlet water temperature of the auxiliary heat source is recorded as the initial inlet water temperature T 0 , taking this moment as the initial moment t 0, and control the heat pump to enter the defrost operation mode. Exemplarily, in an embodiment of the present invention, a temperature sensor can be set on the evaporator to collect the temperature of the evaporator and upload it to the controller. The controller uses the signal that the temperature of the evaporator is continuously lower than the first preset value (for example, 1°C) as a defrost request. In an embodiment of the present invention, when the defrost request is completed, the controller controls the four-way valve to operate and controls the four-way valve to switch from the original first state to the second state. The switching process takes a certain amount of time. After the switching is completed, the heat pump enters the defrost operation mode. In the defrost operation mode, the compressor compresses the refrigerant into a high-temperature liquid or gas, enters from the first end of the four-way valve, exits from the third end, and is sent to the evaporator to melt the frost on the evaporator fins. The refrigerant releases heat and cools. The cooled refrigerant is sent to the condenser after being throttled by the expansion valve. Since the refrigerant temperature is low at this time, it will absorb the heat in the water system. The refrigerant after absorbing heat enters from the second end of the four-way valve, exits from the fourth end, and is sent back to the compressor. This cycle is repeated for defrosting.

[0071] S102. When a signal indicating that the heat pump enters a defrost operation mode is received, the water inlet temperature of the auxiliary heat source is recorded as the first water inlet temperature, and the time when the signal indicating that the heat pump enters the defrost operation mode is received is taken as the first collection time.

[0072] In the embodiment of the present invention, when the heat pump enters the defrost operation mode, it sends a signal to the controller that the heat pump enters the defrost operation mode. When the controller receives the signal that the heat pump enters the defrost operation mode, it records the inlet water temperature of the auxiliary heat source as the first inlet water temperature T 1 The first acquisition time t is the time when the heat pump enters the defrosting operation mode. 1 For example, in an embodiment of the present invention, after the four-way valve is successfully switched from the first state to the second state, a feedback signal may be sent to the controller, and the controller may use the feedback signal as a signal for the heat pump to enter the defrost operation mode.

[0073] S103: Calculate a first load that needs to be increased by the auxiliary heat source at the first collection time based on the temperature difference between the initial water inlet temperature and the first water inlet temperature.

[0074] In the embodiment of the present invention, the initial water inlet temperature T is calculated. 0 and the first inlet water temperature T 1 The temperature difference is based on the initial water inlet temperature T 0 and the first inlet water temperature T 1 The temperature difference is calculated to calculate the auxiliary heat source at the first acquisition time t 1 The first load A1 needs to be increased.

[0075] Exemplarily, in some embodiments of the present invention, the auxiliary heat source is at the first collection time t 1 The calculation formula for the first load A1 that needs to be increased is:

[0076]

[0077] Among them, A1 is the auxiliary heat source at the first collection time t 1 The first load that needs to be increased, a is an empirical value ranging from 1 to 3, T 0 is the initial water inlet temperature, T 1 is the first inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

[0078] S104. At the first collection moment, increase the first load based on the current load of the auxiliary heat source.

[0079] At the first acquisition time t 1 When the auxiliary heat source current load P 1 On this basis, the first load A1 is increased.

[0080] The heat pump starts to switch the four-way valve and stops supplying heat to the water system. Therefore, the inlet water temperature of the auxiliary heat source changes from the initial time t 0 The temperature starts to drop. The present invention increases the load of the auxiliary heat source at the first acquisition moment when the heat pump enters the defrost operation mode, thereby increasing the heating value of the auxiliary heat source and making up for the heat shortage caused by the heat pump stopping heating. This can reduce the fluctuation range of the water supply temperature of the water system and improve the user experience.

[0081] S105. When the heat pump is in the defrosting operation mode, continuously collect the inlet water temperature of the auxiliary heat source, and determine the minimum inlet water temperature of the auxiliary heat source and the collection time of the minimum inlet water temperature.

[0082] When the heat pump is in defrosting mode, the inlet water temperature of the auxiliary heat source is continuously collected, and the minimum inlet water temperature T of the auxiliary heat source is determined. min And the collection time t of the lowest inlet water temperature min .

[0083] Figure 2 A flowchart for determining the minimum water inlet temperature of an auxiliary heat source and the acquisition time of the minimum water inlet temperature provided by the present invention is exemplified as follows: Figure 2 As shown, the process of determining the minimum water inlet temperature of the auxiliary heat source and the collection time of the minimum water inlet temperature is as follows:

[0084] S1051. Use the first water inlet temperature as an initial value of the reference temperature.

[0085] In the embodiment of the present invention, the first inlet water temperature collected at the first collection moment is used as the initial value of the reference temperature.

[0086] S1052. Obtain the inlet water temperature of the auxiliary heat source collected at the i-th collection moment as the target temperature.

[0087] The inlet water temperature of the auxiliary heat source collected at the i-th collection moment is obtained as the target temperature, where i is a positive integer greater than or equal to 2.

[0088] S1053: Determine whether the target temperature is lower than the reference temperature.

[0089] Determine whether the target temperature is less than the reference temperature. If so, execute S1054; if not, execute

[0090] S1054: Use the target temperature as a reference temperature.

[0091] If the target temperature is less than the reference temperature, the target temperature is used as the reference temperature, that is, the value of the reference temperature is updated.

[0092] S1055. Obtain the inlet water temperature of the auxiliary heat source collected at the (i+1)th collection time as the target temperature.

[0093] After the reference temperature value is updated, the inlet water temperature of the auxiliary heat source collected at the (i+1)th collection moment is obtained as the target temperature, and the process returns to the step of determining whether the target temperature is less than the reference temperature.

[0094] S1056. The inlet water temperature collected at the i-1th collection time is used as the minimum inlet water temperature of the auxiliary heat source, and the i-1th collection time is used as the collection time of the minimum inlet water temperature.

[0095] If the target temperature is not less than the reference temperature, the inlet water temperature collected at the i-1th collection time is used as the minimum inlet water temperature T of the auxiliary heat source. min , take the i-1th collection time as the collection time t of the lowest inlet water temperature min .

[0096] It should be noted that in other embodiments of the present invention, other methods may also be used to determine the minimum inlet water temperature of the auxiliary heat source and the collection time of the minimum inlet water temperature, for example, a sliding window method, which is not limited in the embodiments of the present invention.

[0097] S106. Based on the temperature difference between the initial water inlet temperature and the lowest water inlet temperature, calculate the second load that needs to be added to the auxiliary heat source at the time of collecting the lowest water inlet temperature.

[0098] In determining the minimum inlet water temperature T of the auxiliary heat source min Afterwards, based on the initial water inlet temperature T 0 and minimum water inlet temperature T min The temperature difference is calculated to calculate the auxiliary heat source at the collection time t of the lowest inlet water temperature. minA second load A2 needs to be added.

[0099] Exemplarily, in some embodiments of the present invention, the auxiliary heat source is collected at the lowest water inlet temperature time t min The calculation formula for the second load A2 that needs to be added is as follows:

[0100]

[0101] Among them, A2 is the collection time t of the auxiliary heat source at the lowest inlet water temperature min The second load that needs to be added, T 0 is the initial water inlet temperature, T min is the minimum inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature when the auxiliary heat source is at maximum load, P is the maximum load of the auxiliary heat source, and A1 is the first load.

[0102] S107. At the time of collecting the lowest inlet water temperature, a second load is added based on the current load of the auxiliary heat source.

[0103] At the time of minimum inlet water temperature collection t min , adding a second load A2 based on the current load of the auxiliary heat source. The collection time t of the lowest water inlet temperature of the auxiliary heat source during the defrosting operation mode of the present invention min , increase the load of the auxiliary heat source, improve the calorific value of the auxiliary heat source, make up for the heat shortage caused by the heat pump stopping heating, reduce the fluctuation range of the water supply temperature of the water system, and improve user experience.

[0104] The multi-energy coupling operation control method provided by the embodiment of the present invention, during the coupled operation of the auxiliary heat source and the heat pump, when a defrost request of the heat pump is received, the inlet water temperature of the auxiliary heat source is recorded as the initial inlet water temperature, and the heat pump is controlled to enter the defrost operation mode; when a signal of the heat pump entering the defrost operation mode is received, the inlet water temperature of the auxiliary heat source is recorded as the first inlet water temperature, and the time when the signal of the heat pump entering the defrost operation mode is received is taken as the first collection moment; based on the temperature difference between the initial inlet water temperature and the first inlet water temperature, the first load that needs to be increased by the auxiliary heat source at the first collection moment is calculated; at the first collection moment, the first load is increased on the basis of the current load of the auxiliary heat source; since when the heat pump enters the defrost operation mode, the heat pump When the heating is stopped and defrosting has not yet started, the heat loss caused by the heat pump not supplying heat can be calculated. Therefore, the load of the auxiliary heat source can be accurately adjusted at the first collection time, thereby avoiding the situation in the prior art where the auxiliary heat source load is repeatedly adjusted during the heat pump stopping the heating, resulting in large fluctuations in the outlet water temperature; and the present application continuously collects the inlet water temperature of the auxiliary heat source when the heat pump is in the defrost operation mode, determines the minimum inlet water temperature of the auxiliary heat source and the collection time of the minimum inlet water temperature, calculates the second load that needs to be added to the auxiliary heat source at the collection time of the minimum inlet water temperature based on the temperature difference between the initial inlet water temperature and the minimum inlet water temperature, and increases the second load on the basis of the current load of the auxiliary heat source at the collection time of the minimum inlet water temperature at the collection time of the minimum inlet water temperature. Since the heat pump continuously absorbs heat during the defrosting process, and the inlet water temperature of the auxiliary heat source will first decrease and then increase during the entire defrosting process, when the inlet water temperature of the auxiliary heat source reaches the lowest, adding a second load to the current load of the auxiliary heat source can compensate for the heat loss during the defrosting process of the heat pump to the greatest extent, thereby avoiding repeated adjustment of the auxiliary heat source load during the defrosting process to cause large fluctuations in the outlet water temperature, thereby improving the user experience.

[0105] Figure 3 Flow chart of another multi-energy coupling operation control method provided by the present invention. This embodiment is further improved on the basis of the previous embodiment, and focuses on describing the control process after the acquisition moment of the minimum inlet water temperature of the auxiliary heat source during the defrosting operation mode. For the parts that are the same as those in the previous embodiment, this embodiment will not be described in detail. Figure 3 As shown, the multi-energy coupling operation control method specifically includes the following steps:

[0106] S201. During the coupled operation of the auxiliary heat source and the heat pump, upon receiving a defrost request from the heat pump, the inlet water temperature of the auxiliary heat source is recorded as the initial inlet water temperature, and the heat pump is controlled to enter a defrost operation mode.

[0107] S202. When a signal indicating that the heat pump enters a defrost operation mode is received, the water inlet temperature of the auxiliary heat source is recorded as the first water inlet temperature, and the time when the signal indicating that the heat pump enters the defrost operation mode is received is taken as the first collection time.

[0108] S203: Calculate a first load that needs to be increased by the auxiliary heat source at the first collection time based on the temperature difference between the initial water inlet temperature and the first water inlet temperature.

[0109] S204: At the first collection moment, increase the first load based on the current load of the auxiliary heat source.

[0110] S205. When the heat pump is in the defrosting operation mode, continuously collect the inlet water temperature of the auxiliary heat source, and determine the minimum inlet water temperature of the auxiliary heat source and the collection time of the minimum inlet water temperature.

[0111] S206. Based on the temperature difference between the initial water inlet temperature and the minimum water inlet temperature, calculate the second load that needs to be added to the auxiliary heat source at the time of collecting the minimum water inlet temperature.

[0112] S207. At the time of collecting the lowest inlet water temperature, a second load is added based on the current load of the auxiliary heat source.

[0113] S208. When receiving the defrost end signal of the heat pump, record the inlet water temperature of the auxiliary heat source as the second inlet water temperature, and take the time when the defrost end signal of the heat pump is received as the second collection time.

[0114] In an embodiment of the present invention, the defrost end signal may be a time signal. For example, the timing starts when the heat pump enters the defrost operation mode, and the time signal after the first preset time period is used as the defrost end signal of the heat pump. In other embodiments of the present invention, the defrost end signal may also be a temperature signal of the evaporator. For example, the signal that the temperature of the evaporator is continuously higher than the second preset value (for example, 10°C) is used as the defrost end signal. When the defrost end signal of the heat pump is received, the four-way valve is controlled to switch from the second state to the first state again, and the inlet water temperature of the auxiliary heat source is recorded as the second inlet water temperature T 2 , and the time when the defrost end signal of the heat pump is received is taken as the second collection time t 2 .

[0115] S209: Calculate a third load that needs to be reduced by the auxiliary heat source at the second collection time based on the temperature difference between the second inlet water temperature and the lowest inlet water temperature.

[0116] In the embodiment of the present invention, the second water inlet temperature T is calculated 2 and minimum water inlet temperature T min The temperature difference is based on the second water inlet temperature T 2 and minimum water inlet temperature T min The temperature difference is calculated to calculate the auxiliary heat source at the second acquisition time t 2 The third load A3 needs to be reduced.

[0117] Exemplarily, in some embodiments of the present invention, the auxiliary heat source at the second collection time t 2 The calculation formula of the third load A3 that needs to be reduced is as follows:

[0118]

[0119] Among them, A3 is the auxiliary heat source at the second collection time t 2 The third load that needs to be reduced, T 2 is the second inlet water temperature, T min is the minimum inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature when the auxiliary heat source is at maximum load, and P is the maximum load of the auxiliary heat source.

[0120] When the defrost end signal from the heat pump is received, the four-way valve is controlled to switch from the second state to the first state again. The heat pump has finished absorbing heat and is ready to supply heat to the water system. The water supply temperature of the water system begins to rise. In order to avoid the delay in load regulation that causes the water supply temperature of the water system to be too high, it is necessary to reduce the load of the auxiliary heat source at this time, thereby reducing the fluctuation range of the water supply temperature of the water system and improving the user experience.

[0121] S210, at the second collection time t 2 , reduce the third load A3 based on the current load of the auxiliary heat source.

[0122] S211. When a signal indicating that the heat pump is operating stably is received, the water inlet temperature of the auxiliary heat source is recorded as a third water inlet temperature, and the time when the signal indicating that the heat pump is operating stably is received is taken as a third collection time.

[0123] In the embodiment of the present invention, the signal of the stable operation of the heat pump can be a time signal. For example, the time is counted from the time when the defrosting end signal of the heat pump is received, and the time signal after the second preset time period is used as the signal of the stable operation of the heat pump. When the signal of the stable operation of the heat pump is received, the inlet water temperature of the auxiliary heat source is recorded as the third inlet water temperature T 3 The third acquisition time t is the time when the signal of stable operation of the heat pump is received. 3 .

[0124] S212: Calculate a fourth load that needs to be reduced by the auxiliary heat source at the third collection time based on the temperature difference between the third inlet water temperature and the second inlet water temperature.

[0125] In the embodiment of the present invention, the third water inlet temperature T is calculated. 3 and the second inlet water temperature T 2 The temperature difference is based on the third water inlet temperature T 3 and the second inlet water temperature T 2 The temperature difference is calculated to calculate the auxiliary heat source at the third acquisition time t 3The fourth load A4 needs to be reduced.

[0126]

[0127] Wherein, A4 is the fourth load that the auxiliary heat source needs to reduce at the third collection time, T 3 is the third water inlet temperature, T 2 is the second inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

[0128] After the heat pump runs stably, the inlet water temperature of the auxiliary heat source will rise rapidly. In order to avoid the delay in load regulation causing the water supply temperature of the water system to be too high, it is necessary to further reduce the load of the auxiliary heat source at this time, thereby reducing the fluctuation range of the water supply temperature of the water system and improving user experience.

[0129] S213. At the third collection time, reduce the fourth load based on the current load of the auxiliary heat source.

[0130] At the third acquisition time t 3 , reducing the fourth load A4 based on the current load of the auxiliary heat source.

[0131] In the above embodiment of the present invention, when the auxiliary heat source is running at the maximum load, the difference ΔT between the water supply temperature and the water inlet temperature of the auxiliary heat source is calculated, and ΔT is continuously refreshed. Taking the auxiliary heat source as a boiler as an example, due to the long-term operation of the boiler, the air filter will be blocked and the burner will have carbon deposits, causing the boiler load to decrease. In addition, the water flow rate of the water system may change. According to the calculation formula of the specific heat capacity of water, the change in water flow rate will cause the change in ΔT, which will affect the accuracy of the subsequent calculation of the load that needs to be increased or decreased. Therefore, it is necessary to refresh the boiler's ΔT regularly. Exemplarily, in some embodiments of the present invention, the refresh process of ΔT is as follows:

[0132] S1. Determine whether the auxiliary heat source is at maximum load.

[0133] During the operation of the auxiliary heat source, it is determined whether the auxiliary heat source is at the maximum load. If so, step S2 is executed; if not, step S1 is continued.

[0134] S2. Record the water supply temperature and water inlet temperature of the auxiliary heat source.

[0135] If the auxiliary heat source is at maximum load, record the water supply temperature and water inlet temperature of the auxiliary heat source.

[0136] S3. Calculate the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load.

[0137] Calculate the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at the maximum load, and return to execute step S1.

[0138] Figure 4 The load curve diagram before and after the auxiliary heat source load optimization is shown in Figure 2. Figure 5 The curve diagram of the water supply temperature of the water system before and after optimization for the auxiliary heat source load is shown in Figure 2. Figure 4 , 5 As shown, before the load optimization provided by the present invention is adopted, most of the existing solutions are: the load of the auxiliary heat source is adjusted according to the water supply temperature and the water inlet temperature of the auxiliary heat source. The water supply temperature of the auxiliary heat source has a hysteresis, so the auxiliary heat source will have a large delay in adjusting the water temperature. In addition, the existing solution uses a stepless adjustment method to adjust the load of the auxiliary heat source. After detecting that the water supply temperature exceeds the hysteresis value, the load adjustment is performed, and the water temperature is gradually adjusted by increasing or decreasing by 1% after a period of time. The load adjustment is relatively slow, resulting in a large drop in the water supply temperature of the water system during the heat pump defrosting process, and after the heat pump is frosted, it exceeds the user's set temperature by a lot, and the water temperature fluctuates for a long time.

[0139] The multi-energy coupling operation control method provided by the present invention is used to optimize the load. At the first acquisition time t when the heat pump enters the defrosting operation mode, 1 , can accurately adjust the load of the auxiliary heat source, thereby avoiding the situation in the prior art where the auxiliary heat source load is repeatedly adjusted during the heat pump stops supplying heat, resulting in large fluctuations in the outlet water temperature. The collection time t of the lowest inlet water temperature of the auxiliary heat source during the heat pump defrosting operation mode min Increasing the load of the auxiliary heat source and improving the heating value of the auxiliary heat source can make up for the heat shortage caused by the heat pump stopping heating to the greatest extent, thereby avoiding the situation where the auxiliary heat source load is repeatedly adjusted during the defrosting process, which causes large fluctuations in the outlet water temperature and improves the user experience. 2 and the third acquisition time t when the signal of stable operation of the heat pump is received 2 Reducing the load of the auxiliary heat source separately can avoid the problem of excessively high water supply temperature of the water system caused by the delay in load regulation, thereby reducing the fluctuation range of the water supply temperature of the water system and improving user experience.

[0140] Figure 6 A schematic diagram of the structure of a multi-energy coupling system provided by the present invention is shown in FIG. Figure 6 As shown, the multi-energy coupling system includes:

[0141] The heat pump 110 has a water supply end and a water return end.

[0142] Auxiliary heat source 120, the auxiliary heat source 120 has a water inlet end and a water supply end, the water inlet end of the auxiliary heat source 120 is connected to the water supply end of the heat pump 110, the water supply end of the auxiliary heat source 120 is connected to the water-using equipment 140, and the water-using equipment 140 is connected to the return water end of the heat pump 110 through a return water pipe 141.

[0143] The controller 130 is electrically connected to the heat pump 110 and the auxiliary heat source 120 respectively, and is used to execute the multi-energy coupling operation control method provided by any of the aforementioned embodiments of the present invention.

[0144] For example, Figure 6 As shown, the heat pump 110 includes a compressor 111, a four-way valve 112, a condenser 113, an evaporator 114 and an expansion valve 115. The refrigerant outlet of the compressor 111 is connected to the first end D of the four-way valve 112, the second end E of the four-way valve 112 is connected to the refrigerant inlet of the condenser 113, the refrigerant outlet of the condenser 113 is connected to the refrigerant inlet of the evaporator 114 through the expansion valve 115, the refrigerant outlet of the evaporator 114 is connected to the third end C of the four-way valve 112, and the fourth end S of the four-way valve 112 is connected to the refrigerant inlet of the compressor 111. The compressor 111 and the four-way valve 112 are both electrically connected to the controller 130. It should be noted that, Figure 6 The structure of the heat pump shown shows the core components related to the technical solution of the present invention. In other embodiments of the present invention, the heat pump may also include other components, such as a flow meter, a thermometer, etc., which are not limited in the embodiments of the present invention.

[0145] The coupled operation control method of the heat pump and the auxiliary heat source has been described in detail in the aforementioned embodiments, and will not be described in detail in the embodiments of the present invention.

[0146] Figure 7 A schematic diagram of the structure of a multi-energy coupling operation control device provided by the present invention is shown in FIG. Figure 7 As shown, the multi-energy coupling operation control device includes:

[0147] The first recording module 201 is used for recording the inlet water temperature of the auxiliary heat source as the initial inlet water temperature when receiving a defrost request of the heat pump during the coupled operation of the auxiliary heat source and the heat pump, and controlling the heat pump to enter a defrost operation mode;

[0148] The second recording module 202 is used to record the water inlet temperature of the auxiliary heat source as the first water inlet temperature when receiving the signal that the heat pump enters the defrost operation mode, and to take the time when the signal that the heat pump enters the defrost operation mode is received as the first collection time;

[0149] A first load calculation module 203, configured to calculate a first load that needs to be added to the auxiliary heat source at the first collection time based on a temperature difference between the initial water inlet temperature and the first water inlet temperature;

[0150] A first load increasing module 204, configured to increase the first load based on the current load of the auxiliary heat source at the first collection moment;

[0151] A minimum temperature determination module 205 is used to continuously collect the inlet water temperature of the auxiliary heat source when the heat pump is in the defrosting operation mode, and determine the minimum inlet water temperature of the auxiliary heat source and the collection time of the minimum inlet water temperature;

[0152] A second load calculation module 206, configured to calculate a second load that needs to be added to the auxiliary heat source at the time of collecting the minimum inlet water temperature based on the temperature difference between the initial inlet water temperature and the minimum inlet water temperature;

[0153] The second load increasing module 207 is used to increase the second load based on the current load of the auxiliary heat source at the time of collecting the lowest inlet water temperature.

[0154] In some embodiments of the present invention, based on the temperature difference between the initial water inlet temperature and the first water inlet temperature, a calculation formula for calculating the first load that needs to be increased by the auxiliary heat source at the first collection time is:

[0155]

[0156] Wherein, A1 is the first load that the auxiliary heat source needs to increase at the first collection time, a is an empirical value, T 0 is the initial water inlet temperature, T 1 is the first inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

[0157] In some embodiments of the present invention, the minimum temperature determination module 205 includes:

[0158] An initial value setting submodule, used for taking the first water inlet temperature as an initial value of a reference temperature;

[0159] A target temperature acquisition submodule, used to acquire the water inlet temperature of the auxiliary heat source collected at the i-th collection moment as the target temperature, where i is a positive integer greater than or equal to 2;

[0160] A judgment submodule is used to judge whether the target temperature is less than the reference temperature;

[0161] A reference temperature updating submodule, used to use the target temperature as the reference temperature when the target temperature is less than the reference temperature;

[0162] A target temperature updating submodule is used to obtain the water inlet temperature of the auxiliary heat source collected at the (i+1)th collection moment as the target temperature, and return to execute the step of determining whether the target temperature is less than the reference temperature;

[0163] The minimum temperature determination submodule is used to use the inlet water temperature collected at the i-1th collection moment as the minimum inlet water temperature of the auxiliary heat source and the i-1th collection moment as the collection moment of the minimum inlet water temperature when the target temperature is not less than the reference temperature.

[0164] In some embodiments of the present invention, based on the temperature difference between the initial water inlet temperature and the minimum water inlet temperature, a calculation formula for calculating the second load that the auxiliary heat source needs to increase at the time of collecting the minimum water inlet temperature is:

[0165]

[0166] Wherein, A2 is the second load that the auxiliary heat source needs to increase at the time of collecting the lowest inlet water temperature, T 0 is the initial water inlet temperature, T min is the minimum inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, P is the maximum load of the auxiliary heat source, and A1 is the first load.

[0167] In some embodiments of the present invention, the multi-energy coupling operation control device further includes:

[0168] A maximum load judgment module, used to judge whether the auxiliary heat source is at a maximum load during the operation of the auxiliary heat source;

[0169] A third recording module is used to record the water supply temperature and water inlet temperature of the auxiliary heat source when the auxiliary heat source is at maximum load;

[0170] a temperature difference calculation module, used for calculating the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at the maximum load, and returning to execute the step of determining whether the auxiliary heat source is at the maximum load;

[0171] The return execution module is used to return to the step of determining whether the auxiliary heat source is at the maximum load when the auxiliary heat source is not at the maximum load.

[0172] In some embodiments of the present invention, the multi-energy coupling operation control device further includes:

[0173] a fourth recording module, for recording the water inlet temperature of the auxiliary heat source as the second water inlet temperature when receiving the defrost end signal of the heat pump, and taking the time when the defrost end signal of the heat pump is received as the second collection time;

[0174] a third load calculation module, configured to calculate a third load that needs to be reduced by the auxiliary heat source at the second collection time based on the temperature difference between the second inlet water temperature and the minimum inlet water temperature;

[0175] The first load reduction module is used to reduce the third load based on the current load of the auxiliary heat source at the second collection moment.

[0176] In some embodiments of the present invention, based on the temperature difference between the second inlet water temperature and the minimum inlet water temperature, a calculation formula for calculating the third load that needs to be reduced by the auxiliary heat source at the second collection time is:

[0177]

[0178] Wherein, A3 is the third load that the auxiliary heat source needs to reduce at the second collection time, T 2 is the second water inlet temperature, T min is the minimum inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

[0179] In some embodiments of the present invention, the multi-energy coupling operation control device further includes:

[0180] A fifth recording module, configured to record the water inlet temperature of the auxiliary heat source as the third water inlet temperature when receiving the signal indicating that the heat pump is operating stably, and to take the time when the signal indicating that the heat pump is operating stably as the third collection time;

[0181] a fourth load calculation module, configured to calculate a fourth load that needs to be reduced by the auxiliary heat source at the third collection time based on a temperature difference between the third inlet water temperature and the second inlet water temperature;

[0182] The second load reduction module is used to reduce the fourth load based on the current load of the auxiliary heat source at the third collection time.

[0183] In some embodiments of the present invention, based on the temperature difference between the third inlet water temperature and the second inlet water temperature, a calculation formula for calculating the fourth load that the auxiliary heat source needs to reduce at the third collection time is:

[0184]

[0185] Wherein, A4 is the fourth load that the auxiliary heat source needs to reduce at the third collection time, T 3 is the third water inlet temperature, T 2 is the second inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

[0186] The above-mentioned multi-energy coupling operation control device can execute the multi-energy coupling operation control method provided by the embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the multi-energy coupling operation control method.

[0187] Figure 8 A schematic diagram of the structure of an electronic device provided by the present invention, the electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0188] like Figure 8 As shown, the electronic device includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0189] A number of components in the electronic device are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0190] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a multi-energy coupling operation control method.

[0191] In some embodiments, the multi-energy coupling operation control method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the multi-energy coupling operation control method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the multi-energy coupling operation control method in any other appropriate manner (e.g., by means of firmware).

[0192] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0193] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0194] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0195] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0196] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0197] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0198] An embodiment of the present invention further provides a computer program product, including a computer program, which, when executed by a processor, implements the multi-energy coupling operation control method provided in any embodiment of the present application.

[0199] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present invention, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0200] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0201] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-energy coupling operation control method, characterized in that: include: During the coupled operation of the auxiliary heat source and the heat pump, upon receiving a defrost request from the heat pump, recording the inlet water temperature of the auxiliary heat source as the initial inlet water temperature, and controlling the heat pump to enter a defrost operation mode; When receiving a signal that the heat pump enters a defrost operation mode, recording the water inlet temperature of the auxiliary heat source as the first water inlet temperature, and taking the time when the heat pump enters the defrost operation mode as the first collection time; Calculating a first load that needs to be increased by the auxiliary heat source at the first collection time based on a temperature difference between the initial water inlet temperature and the first water inlet temperature; At the first collection moment, increasing the first load based on the current load of the auxiliary heat source; When the heat pump is in the defrosting operation mode, continuously collecting the water inlet temperature of the auxiliary heat source, and determining the minimum water inlet temperature of the auxiliary heat source and the collection time of the minimum water inlet temperature; Based on the temperature difference between the initial water inlet temperature and the minimum water inlet temperature, calculating the second load that the auxiliary heat source needs to increase at the time of collecting the minimum water inlet temperature; At the time of collecting the lowest inlet water temperature, the second load is increased on the basis of the current load of the auxiliary heat source.

2. The multi-energy coupling operation control method according to claim 1 is characterized in that: Based on the temperature difference between the initial water inlet temperature and the first water inlet temperature, the calculation formula for calculating the first load that needs to be increased by the auxiliary heat source at the first collection time is: Among them, A1 is the first load that needs to be increased by the auxiliary heat source at the first collection time, a is an empirical value, T0 is the initial water inlet temperature, T1 is the first water inlet temperature, ΔT is the temperature difference between the water supply temperature and the water inlet temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

3. The multi-energy coupling operation control method according to claim 1, characterized in that: Determining the minimum water inlet temperature of the auxiliary heat source and the acquisition time of the minimum water inlet temperature includes: Using the first water inlet temperature as an initial value of a reference temperature; Obtaining the water inlet temperature of the auxiliary heat source collected at the i-th collection moment as the target temperature, where i is a positive integer greater than or equal to 2; Determine whether the target temperature is less than the reference temperature; If yes, the target temperature is used as the reference temperature; Obtaining the water inlet temperature of the auxiliary heat source collected at the (i+1)th collection moment as the target temperature, and returning to execute the step of determining whether the target temperature is less than the reference temperature; If not, the water inlet temperature collected at the i-1th collection time is used as the minimum water inlet temperature of the auxiliary heat source, and the i-1th collection time is used as the collection time of the minimum water inlet temperature.

4. The multi-energy coupling operation control method according to claim 1, characterized in that: Based on the temperature difference between the initial water inlet temperature and the minimum water inlet temperature, the calculation formula for calculating the second load that the auxiliary heat source needs to increase at the time of collecting the minimum water inlet temperature is: Wherein, A2 is the second load that the auxiliary heat source needs to increase at the time of collecting the lowest inlet water temperature, T0 is the initial inlet water temperature, T min is the minimum inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, P is the maximum load of the auxiliary heat source, and A1 is the first load.

5. The multi-energy coupling operation control method according to claim 2 or 4, characterized in that: Also includes: During the operation of the auxiliary heat source, determining whether the auxiliary heat source is at maximum load; If yes, then record the water supply temperature and water inlet temperature of the auxiliary heat source; Calculating the temperature difference between the water supply temperature and the water inlet temperature of the auxiliary heat source at the maximum load, and returning to execute the step of determining whether the auxiliary heat source is at the maximum load; If not, the process returns to the step of determining whether the auxiliary heat source is at the maximum load.

6. The multi-energy coupling operation control method according to any one of claims 1 to 4, characterized in that: Also includes: When receiving the defrost end signal of the heat pump, recording the water inlet temperature of the auxiliary heat source as the second water inlet temperature, and taking the time when the defrost end signal of the heat pump is received as the second collection time; Calculating a third load that needs to be reduced by the auxiliary heat source at the second collection time based on the temperature difference between the second inlet water temperature and the lowest inlet water temperature; At the second collection time, the third load is reduced based on the current load of the auxiliary heat source.

7. The multi-energy coupling operation control method according to claim 6, characterized in that: Based on the temperature difference between the second water inlet temperature and the minimum water inlet temperature, the calculation formula for calculating the third load that the auxiliary heat source needs to reduce at the second collection time is: Wherein, A3 is the third load that the auxiliary heat source needs to reduce at the second collection time, T2 is the second water inlet temperature, T min is the minimum inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

8. The multi-energy coupling operation control method according to claim 6, characterized in that: Also includes: When the signal of the heat pump stable operation is received, the water inlet temperature of the auxiliary heat source is recorded as the third water inlet temperature, and the time when the signal of the heat pump stable operation is received is taken as the third collection time; Calculating a fourth load that needs to be reduced by the auxiliary heat source at the third collection time based on a temperature difference between the third water inlet temperature and the second water inlet temperature; At the third collection time, the fourth load is reduced based on the current load of the auxiliary heat source.

9. The multi-energy coupling operation control method according to claim 8, characterized in that: Based on the temperature difference between the third water inlet temperature and the second water inlet temperature, the calculation formula for calculating the fourth load that the auxiliary heat source needs to reduce at the third collection time is: Among them, A4 is the fourth load that the auxiliary heat source needs to reduce at the third collection time, T3 is the third inlet water temperature, T2 is the second inlet water temperature, ΔT is the temperature difference between the supply water temperature and the inlet water temperature of the auxiliary heat source at maximum load, and P is the maximum load of the auxiliary heat source.

10. A multi-energy coupling system, characterized in that: include: A heat pump, wherein the heat pump has a water supply end and a water return end; An auxiliary heat source, the auxiliary heat source having a water inlet and a water supply, the water inlet of the auxiliary heat source being connected to the water supply of the heat pump, the water supply of the auxiliary heat source being connected to a water-using device, and the water-using device being connected to a water return end of the heat pump through a water return pipe; A controller, wherein the controller is electrically connected to the heat pump and the auxiliary heat source, respectively, and is used to execute the multi-energy coupling operation control method described in any one of claims 1-9.

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