Solar photovoltaic heat pump system control method and device, electronic equipment, storage medium and computer program product

Abstract

The application relates to a control method and device of a solar photovoltaic heat pump system, electronic equipment, a storage medium and a computer program product. The solar photovoltaic heat pump system comprises a photovoltaic assembly, a battery and a heat pump system, the photovoltaic assembly is used for converting solar energy into electrical energy and storing the electrical energy in the battery, and the battery is used for supplying power for the heat pump system. The control method of the solar photovoltaic heat pump system comprises the following steps: after it is determined that the residual power of the battery is within a preset range and the heat pump system is in a normal working state, it is judged whether the photovoltaic assembly has electrical energy output; if the photovoltaic assembly has electrical energy output, the average output power of the photovoltaic assembly in a first time period is inquired, and the heat pump system is controlled to run at the average output power in a second time period, the second time period is located after the first time period, and the time length of the second time period is the same as that of the first time period; and if the photovoltaic assembly does not have electrical energy output, the heat pump system is controlled to run at a preset power. The technical scheme can improve the comprehensive efficiency of solar energy.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, specifically to a control method, device, electronic equipment, storage medium, and computer program product for a solar photovoltaic heat pump system. Background Technology

[0002] With the reduction in the cost of new energy power generation and the maturity of energy storage battery technology, solar photovoltaic heat pump heat collection systems, which combine photovoltaic power generation, electrochemical energy storage and high-efficiency heat collection technology, have greatly supplemented daily energy demand by providing on-site energy access and flexible energy use, and their application is becoming increasingly widespread.

[0003] In related technologies, conventional solar photovoltaic heat pump systems typically store electrical energy in batteries and then use the battery power to drive the heat pump for heating when needed. However, the overall solar energy efficiency of such systems is extremely low. Summary of the Invention

[0004] The purpose of this application is to provide a control method, device, electronic equipment, storage medium, and computer program product for a solar photovoltaic heat pump system, which can improve the overall efficiency of solar energy.

[0005] According to a first aspect of the embodiments of this application, a control method for a solar photovoltaic heat pump system is provided. The solar photovoltaic heat pump system includes a photovoltaic module, a battery, and a heat pump system. The photovoltaic module is used to convert solar energy into electrical energy and store the electrical energy in the battery. The battery is used to supply power to the heat pump system. The method includes:

[0006] After determining that the remaining power of the battery is within a preset range and that the heat pump system is in normal working condition, it is determined whether the photovoltaic module has power output;

[0007] If there is electrical energy output, the average output power of the photovoltaic module during the first time period is queried, and the heat pump system is controlled to operate at the average output power during the second time period. The second time period is after the first time period, and the duration of the second time period is the same as the duration of the first time period.

[0008] If there is no electrical power output, the heat pump system is controlled to operate at a preset power.

[0009] In one embodiment, determining whether the photovoltaic module has electrical energy output includes:

[0010] Determine the power output parameters of the photovoltaic module within the first time period, wherein the power output parameters are cumulative power output, average power output, or output current;

[0011] The photovoltaic module is determined to have electrical output based on the electrical output parameters.

[0012] In one implementation, determining that the remaining charge of the battery is within a preset range includes:

[0013] Determine whether the remaining battery power is greater than the preset remaining battery power for startup;

[0014] If the remaining battery power is greater than the preset starting remaining battery power, then the remaining battery power is determined to be within the preset range.

[0015] In one embodiment, the control method for the solar photovoltaic heat pump system further includes:

[0016] If the remaining power is greater than the preset starting remaining power, the heat pump system is controlled to start running when it is in a shutdown state, and the heat pump system is controlled to continue running when it is already in a running state.

[0017] In one embodiment, the control method for the solar photovoltaic heat pump system further includes:

[0018] Determine whether the remaining battery power is less than the preset stop remaining battery power; the preset stop remaining battery power is less than the preset start remaining battery power.

[0019] If the remaining power is less than the preset stop remaining power, the heat pump system is controlled to stop operating.

[0020] In one embodiment, the heat pump system includes a heat pump, a water tank, and a circulation pipe; the circulation pipe is located between the heat pump and the water tank and is used to provide heat exchange circulation between the heat pump and the water tank.

[0021] Determining that the heat pump system is in normal operating condition includes:

[0022] When the heat pump system is running, it is determined whether the temperature of the water tank is lower than the preset temperature;

[0023] If the temperature of the water tank is lower than the preset temperature, then the heat pump system is determined to be in normal working condition.

[0024] According to a second aspect of the embodiments of this application, a control device for a solar photovoltaic heat pump system is provided. The solar photovoltaic heat pump system includes a photovoltaic module, a battery, and a heat pump system. The photovoltaic module is used to convert solar energy into electrical energy and store the electrical energy in the battery. The battery is used to supply power to the heat pump system. The device includes:

[0025] The judgment module is configured to determine whether the photovoltaic module has electrical energy output after determining that the remaining power of the battery is within a preset range and the heat pump system is in normal working condition;

[0026] The first control module is configured to query the average output power of the photovoltaic module during a first time period when there is electrical energy output, and control the heat pump system to operate at the average output power during a second time period, wherein the second time period is after the first time period and the duration of the second time period is the same as the duration of the first time period.

[0027] The second control module is configured to control the heat pump system to operate at a preset power when there is no power output.

[0028] According to a third aspect of the embodiments of this application, an electronic device is provided, including a memory and a processor, wherein the memory is used to store a computer program executable by the processor; and the processor is used to execute the computer program in the memory to implement the method described above.

[0029] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, on which a computer program is stored, characterized in that, when the executable computer program in the storage medium is executed by a processor, the above-described method can be implemented.

[0030] According to a fifth aspect of the embodiments of this application, a computer program product is provided, including a computer program that, when executed by a processor, implements the above-described method.

[0031] Compared with the prior art, the beneficial effects of this application are as follows:

[0032] After confirming that the remaining battery power is within a preset range and the heat pump system is operating normally, the system checks whether the photovoltaic modules are outputting electricity. If electricity is output, the average output power of the photovoltaic modules during the first time period is retrieved, and the heat pump system is controlled to operate at the average output power during the second time period, which follows the first time period and has the same duration. If no electricity is output, the heat pump system is controlled to operate at a preset power. Since the photovoltaic modules mainly operate during the day, the heat pump system can be controlled to convert the electrical energy output by the photovoltaic modules into heat energy for storage during the day (the core idea of ​​this application is based on thermal storage), minimizing the scale of battery energy storage and making it only a support for the stable operation of the heat pump system in each time period. Moreover, the heat pump system is controlled based on the output of the photovoltaic modules, rather than based on user needs. When users need heat, the hot water storage tank provides heat externally, and the same applies when heat is used at night. Since the electricity output from the photovoltaic modules is constantly driving the heat pump system, the batteries will always be in a partially charged state. In this way, the photovoltaic system (photovoltaic modules and batteries) can always be in a fully powered state, maximizing the utilization of solar energy. Meanwhile, the heat pump system always operates during the day when the temperature is relatively high, thereby improving the overall solar energy utilization rate of the solar photovoltaic heat pump system.

[0033] Furthermore, since photovoltaic modules primarily operate during the day, the heat pump system can be controlled to convert the electrical energy output by the photovoltaic modules into heat energy for storage during the day. The heat pump system mainly operates during the day when temperatures are relatively high. This eliminates the nighttime operation condition compared to related technologies, where lower nighttime temperatures reduce the heat pump system's efficiency and increase the probability of frosting. Therefore, the technical solution of this application can reduce the impact of ambient temperature on the heat pump system.

[0034] In addition, the technical solution of this application combines photovoltaic power generation and high-efficiency thermal collection technology, which expands the scope of application and has good application prospects. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a solar photovoltaic heat pump system according to an exemplary embodiment.

[0036] Figure 2 This is a flowchart illustrating a control method for a solar photovoltaic heat pump system according to an exemplary embodiment.

[0037] Figure 3 This is a flowchart illustrating a control method for a solar photovoltaic heat pump system according to another exemplary embodiment.

[0038] Figure 4This is a flowchart illustrating a control method for a solar photovoltaic heat pump system according to another exemplary embodiment.

[0039] Figure 5 This is a flowchart illustrating a control method for a solar photovoltaic heat pump system according to another exemplary embodiment.

[0040] Figure 6 This is a flowchart illustrating a control method for a solar photovoltaic heat pump system according to another exemplary embodiment.

[0041] Figure 7 This is a graph illustrating the relationship between photovoltaic power generation and heat pump operating power according to an exemplary embodiment.

[0042] Figure 8 This is a flowchart illustrating a control method for a solar photovoltaic heat pump system according to another exemplary embodiment.

[0043] Figure 9 This is a block diagram illustrating a control device for a solar photovoltaic heat pump system according to another exemplary embodiment.

[0044] Figure 10 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0045] Unless otherwise defined, the technical or scientific terms used in this specification and claims shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. Specific embodiments of this application will be described below in conjunction with the accompanying drawings. It should be noted that, in order to provide a concise description, this specification cannot exhaustively describe all features of the actual embodiments. Without departing from the spirit and scope of this application, those skilled in the art can modify and substitute the embodiments of this application, and the resulting embodiments are also within the protection scope of this application.

[0046] In related technologies, conventional solar photovoltaic heat pump systems typically store electrical energy in batteries and then use this energy to drive the heat pump system for heating when needed. However, due to battery capacity limitations, photovoltaic modules cannot efficiently utilize solar energy. Especially in low-temperature environments at night, the operating efficiency of the heat pump system is significantly affected, failing to effectively utilize the advantages of both technologies. Furthermore, the system's solar energy utilization rate is extremely low due to fluctuations in renewable energy generation and temperature variations.

[0047] To address the aforementioned technical problems, this application proposes a control method, device, electronic equipment, and storage medium for a solar photovoltaic heat pump system, which can improve the solar energy utilization rate of the system.

[0048] Before introducing the control method of the solar photovoltaic heat pump system in this application, let's first introduce the solar photovoltaic heat pump system.

[0049] like Figure 1 As shown, the solar photovoltaic heat pump system includes a photovoltaic module 11, a battery 12, a heat pump system 13, a DC-DC converter 14, a power management system (BMS) 15, a control device 16, and a DC-AC inverter discharge device 17.

[0050] like Figure 1 As shown, the photovoltaic module 11 is electrically connected to the DC-DC converter 14, the DC-DC converter 14 is electrically connected to the power management system 15, and the power management system 15 is electrically connected to the battery 12. The photovoltaic module 11 is used to convert solar energy into electrical energy. The DC-DC converter 14 is used to perform DC-DC conversion on the current output from the photovoltaic module 11, and output it to the battery 12 via the power management system 15.

[0051] The power management system 15 is electrically connected to the DC-AC inverter discharge device 17, which is electrically connected to the heat pump system 13. The battery 12 is used to power the heat pump system 13.

[0052] The control device 16 is mainly connected to the power management system 15, the DC-AC inverter discharge device 17 and the heat pump system 13 through signal lines. It reads the required information and issues instructions to control the operating status of the photovoltaic module 11, the battery 12 and the heat pump system 13.

[0053] In one embodiment, the photovoltaic module 11 may be a photovoltaic panel. The photovoltaic module 11 does not require active control and is generally automatically adjusted according to the needs of the power management system 15 and the DC-AC inverter discharge device 17.

[0054] In one embodiment, battery 12 may be a rechargeable battery, controlled by power management system 15.

[0055] In one embodiment, such as Figure 1 As shown, the heat pump system 13 includes a heat pump 131, a circulation pipe 132, and a water tank 133. The circulation pipe 132 is located between the heat pump 131 and the water tank 133, and is used to provide heat exchange circulation between the heat pump 131 and the water tank 133. The water tank 133 can store heat.

[0056] Figure 2 This is a flowchart illustrating a control method for a solar photovoltaic heat pump system according to an exemplary embodiment. Please refer to... Figure 2 The control method for this solar photovoltaic heat pump system may include the following steps:

[0057] Step 201: After determining that the remaining battery power is within the preset range and the heat pump system is in normal working condition, determine whether the photovoltaic module has power output.

[0058] In one embodiment, the preset range can be greater than the preset remaining battery power at startup.

[0059] In one embodiment, such as Figure 3 As shown, determining that the remaining battery power is within a preset range may include the following steps:

[0060] Step 301: Determine whether the remaining battery power is greater than the preset starting remaining battery power.

[0061] Step 302: If the remaining battery power is greater than the preset starting remaining battery power, then the remaining battery power is determined to be within the preset range.

[0062] In one embodiment, if the remaining battery power is greater than the preset remaining starting power, the heat pump system can be controlled to start running when the heat pump system is in a stopped state, and the heat pump system can be controlled to continue running when the heat pump system is already running.

[0063] In one embodiment, the preset starting remaining power can be 80%. For example, when the remaining power is 85%, the remaining power is greater than the preset starting remaining power, and the remaining power is determined to be within the preset range. At the same time, when the heat pump system is in a shutdown state, the heat pump system is controlled to start running, and when the heat pump system is already in a running state, the heat pump system is controlled to continue running.

[0064] In one embodiment, such as Figure 4 As shown, the above method may further include the following steps:

[0065] Step 401: Determine whether the remaining battery power is less than the preset stop remaining battery power; the preset stop remaining battery power is less than the preset start remaining battery power.

[0066] Step 402: If the remaining power is less than the preset stop remaining power, control the heat pump system to stop running.

[0067] The preset remaining battery level at shutdown and the preset remaining battery level at startup are between 0% and 100%.

[0068] In one embodiment, the preset stop remaining power can be 20%. For example, when the remaining power is 18%, the remaining power is less than the preset stop remaining power, and the heat pump system is controlled to stop operating.

[0069] In one embodiment, determining that the heat pump system is in normal operating condition may include the following steps:

[0070] Step 501: When the heat pump system is running, determine whether the temperature of the water tank is lower than the preset temperature.

[0071] Step 502: If the temperature of the water tank is lower than the preset temperature, then the heat pump system is determined to be in normal working condition.

[0072] In one embodiment, if the temperature of the water tank exceeds a preset temperature, the heat pump system is controlled to stop operating. The preset temperature can be adjusted as needed.

[0073] In one embodiment, the preset temperature can be 55°C. For example, when the water tank temperature is 45°C, which is lower than the preset temperature, the heat pump system is determined to be in normal working condition. When the water tank temperature is 58°C, which is higher than the preset temperature, the heat pump system is controlled to stop working.

[0074] In one embodiment, such as Figure 6 As shown, determining whether a photovoltaic module is outputting electrical energy can include the following steps:

[0075] Step 601: Determine the power output parameters of the photovoltaic modules during the first time period.

[0076] Step 602: Determine whether the photovoltaic module has power output based on the power output parameters.

[0077] In one embodiment, the power output parameter can be the output current. For example, if the output current is greater than a preset current during a first time period, it is determined that there is power output; if the output current is less than the preset current, it is determined that there is no power output.

[0078] In another embodiment, the power output parameter can be the cumulative power output. For example, if the cumulative power output of the photovoltaic module is greater than a preset power value within a first time period, it is determined that there is power output; if the cumulative power output of the photovoltaic module is less than the preset power value within the first time period, it is determined that there is no power output.

[0079] In another embodiment, the power output parameter can be the average output power. The average output power can be calculated based on the cumulative power output of the photovoltaic modules within a first time period and the duration of that first time period.

[0080] In one embodiment, the duration of the first time period is the step size of the heat pump system operation, which can be any time scale greater than zero.

[0081] Step 202: If there is electrical energy output, query the average output power of the photovoltaic module in the first time period, and control the heat pump system to operate at the average output power in the second time period. The second time period is after the first time period, and the duration of the second time period is the same as that of the first time period.

[0082] In one embodiment, when there is electrical energy output in the first time period, the heat pump system can be controlled to operate at the average output power of the photovoltaic modules in the first time period in the second time period. For example, let the step size of the heat pump system be τ. After determining that there is electrical energy output in the time period τ0, the average output power (P0) of the photovoltaic modules in the time period τ0 is queried. In the time period τ1, the heat pump system is controlled to operate at power P0. Then, the average output power (P1) of the photovoltaic modules in the time period τ1 is queried. In the time period τ2, the heat pump system is controlled to operate at power P1. And so on, the average output power (Pn-1) of the photovoltaic modules in the time period τn-1 is queried. In the time period τn, the heat pump system is controlled to operate at power Pn-1. Here, n is a positive integer, which is the ordinal number of the step size of the heat pump system.

[0083] For example, if there is electrical energy output during the time period τ0, and τ = 10 minutes, assuming the average output power of the photovoltaic module is 200W in the first 10 minutes, the heat pump system is controlled to operate at 200W in the second 10-minute period. Assuming the average output power of the photovoltaic module is 150W in the second 10-minute period, the heat pump system is controlled to operate at 150W in the third 10-minute period, and so on. Assuming the average output power of the photovoltaic module is 100W in the nth 10-minute period, the heat pump system operates at 100W in the (n+1)th time period. Figure 7 As shown, Figure 7 In this context, photovoltaic power generation refers to the output power of photovoltaic modules, heat pump operating power refers to the operating power of the heat pump system, and SOC refers to the remaining electricity.

[0084] Step 203: If there is no electrical output, control the heat pump system to operate at the preset power.

[0085] In one embodiment, when there is no electrical energy output during a first time period, the heat pump system is controlled to operate at a preset power (Pe). In one embodiment, the preset power (Pe) can be 200W. The preset power can be adjusted as needed, and is not limited to 200W.

[0086] Figure 8 This is a flowchart illustrating a control method for a solar photovoltaic heat pump system according to another exemplary embodiment. Please see [link to flowchart illustration]. Figure 8 The control method for this solar photovoltaic heat pump system may include the following steps:

[0087] Step 801: Determine whether the remaining battery power is within a preset range. If yes, proceed to step 802; otherwise, proceed to step 803.

[0088] Step 802: Determine that the remaining power is within the preset range. When the heat pump system is in a shutdown state, control the heat pump system to start running. When the heat pump system is already running, control the heat pump system to continue running.

[0089] Step 803: Control the heat pump system to stop running.

[0090] Step 804: Determine if the heat pump system is in normal working condition. If yes, proceed to step 805; otherwise, control the heat pump system to stop working.

[0091] Step 805: Determine that the heat pump system is in normal working condition.

[0092] Step 806: Determine if the photovoltaic module is outputting electrical energy. If yes, proceed to step 807; otherwise, proceed to step 808.

[0093] Step 807: Control the heat pump system to operate in variable power mode: Query the average output power (Pn-1) of the photovoltaic modules during the time period τn-1, and control the heat pump system to operate at a power of Pn-1 during the time period τn.

[0094] Step 808, control the heat pump system to operate in constant power mode: control the heat pump system to operate at a preset power Pe.

[0095] Another exemplary embodiment of this application provides a control method for a solar photovoltaic heat pump system. In this embodiment, the SOC value of the battery, the water tank temperature, and the output power of the photovoltaic module are collected cyclically. When the SOC value of the battery is lower than a preset stop SOC value, the heat pump system is controlled to stop operating.

[0096]

[0097]

[0098] Another exemplary embodiment of this application provides a control method for a solar photovoltaic heat pump system. In this embodiment, the SOC value of the battery, the water tank temperature, and the output power of the photovoltaic module are collected cyclically. When the water tank temperature is higher than a preset temperature, the heat pump is controlled to stop operating.

[0099] Time period Battery SOC (%) Water tank temperature (°C) Photovoltaic output power (W) Heat pump power (W) ........ ....... ..... ....... ....... τ35 71％ 50 150W 140W 72％ 51 150W 140W 73％ 52 150W 140W ........ ....... ..... ....... τ16 81％ 53 160W 150W 81％ 54 160W 150W 81％ 55 160W 0W 82％ 55 160W 0W

[0100] The main difference between this application and related technologies lies in the logic of operation, with the core focus on the control of heat pump operation. Current approaches generally utilize electricity generated by photovoltaics to drive the heat pump when needed. If a user requires heat during the day, the heat pump operates during the day, with the electricity output from the photovoltaic modules prioritizing its operation and storing any excess energy. If a user requires heat at night, the heat pump operates at night, storing the electricity output from the photovoltaic modules during the day and using it to drive the heat pump at night. When energy storage is insufficient, power is typically drawn from the grid to drive the heat pump. Furthermore, because nighttime temperatures are lower than daytime temperatures, the heat pump's efficiency decreases significantly, resulting in a relatively low overall efficiency.

[0101] The core idea of ​​this application is based on thermal storage. During the day, the heat pump converts the electrical energy output from the photovoltaic modules into heat energy for storage, minimizing the scale of electrical energy storage and using it solely to support the stable operation of the heat pump in each time period. The heat pump no longer operates based on user needs, but is mainly controlled by the electrical energy output from the photovoltaic modules and the water tank temperature. When the user needs heat, the hot water storage tank provides heat, and the same applies when heat is needed at night. Because the electrical energy output from the photovoltaic modules continuously drives the heat pump, the battery remains in a partially charged state. This allows the photovoltaic system to operate at full capacity, maximizing the utilization of solar energy, while the heat pump operates only during the relatively warmer daytime hours, thereby improving overall utilization efficiency.

[0102] Furthermore, since photovoltaic modules primarily operate during the day, the heat pump system can be controlled to convert the electrical energy output by the photovoltaic modules into heat energy for storage during the day. The heat pump system mainly operates during the day when temperatures are relatively high. This eliminates the nighttime operation condition compared to related technologies, where lower nighttime temperatures reduce the heat pump system's efficiency and increase the probability of frosting. Therefore, the technical solution of this application can reduce the impact of ambient temperature on the heat pump system.

[0103] In addition, the technical solution of this application combines photovoltaic power generation and high-efficiency thermal collection technology, which expands the scope of application and has good application prospects.

[0104] Figure 9 This is a block diagram illustrating a control device for a solar photovoltaic heat pump system according to an exemplary embodiment. The solar photovoltaic heat pump system includes photovoltaic modules, a battery, and a heat pump system. The photovoltaic modules are used to convert solar energy into electrical energy and store the electrical energy in the battery, which powers the heat pump system. Figure 9 As shown, in this embodiment, the control device for the solar photovoltaic heat pump system includes:

[0105] The judgment module 91 is configured to determine whether the photovoltaic module has electrical energy output after determining that the remaining power of the battery is within a preset range and the heat pump system is in normal working condition;

[0106] The first control module 92 is configured to query the average output power of the photovoltaic module during a first time period when there is electrical energy output, and control the heat pump system to operate at the average output power during a second time period, wherein the second time period is after the first time period and the duration of the second time period is the same as the duration of the first time period.

[0107] The second control module 93 is configured to control the heat pump system to operate at a preset power when there is no power output.

[0108] Embodiments of this application also propose an electronic device, including a processor and a memory; the memory is used to store a computer program executable by the processor; the processor is used to execute the computer program in the memory to implement the control method of the solar photovoltaic heat pump system of any of the above embodiments.

[0109] Embodiments of this application also propose a computer-readable storage medium that, when an executable computer program in the storage medium is executed by a processor, enables the implementation of the control method for the solar photovoltaic heat pump system of any of the above embodiments.

[0110] Embodiments of this application also propose a computer program product, including a computer program that, when executed by a processor, implements the control method for the solar photovoltaic heat pump system of any of the above embodiments.

[0111] Regarding the apparatus in the above embodiments, the specific manner in which the processor performs the operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0112] Figure 10 This is a block diagram illustrating an electronic device according to an exemplary embodiment. For example, electronic device 900 may be provided as a server. (Refer to...) Figure 10 The device 900 includes a processing component 922, which further includes one or more processors, and memory resources represented by a memory 932 for storing instructions, such as application programs, that can be executed by the processing component 922. The application programs stored in the memory 932 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 922 is configured to execute instructions to perform the aforementioned control method for a solar photovoltaic heat pump system.

[0113] Device 900 may also include a power supply component 926 configured to perform power management of device 900, a wired or wireless network interface 950 configured to connect device 900 to a network, and an input / output (I / O) interface 958. Device 900 can operate on an operating system stored in memory 932, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™, or similar.

[0114] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 932 including instructions, which can be executed by the processing component 922 of the device 900 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0115] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0116] The above description of the embodiments is intended to enable those skilled in the art to understand and apply this application. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, this application is not limited to the embodiments described herein, and any improvements and modifications made by those skilled in the art based on the disclosure of this application without departing from the scope and spirit of this application are within the scope of this application.

Claims

1. A control method for a solar photovoltaic heat pump system, characterized in that, The solar photovoltaic heat pump system includes photovoltaic modules, batteries, and a heat pump system. The photovoltaic modules are used to convert solar energy into electrical energy and store the electrical energy in the batteries or the heat pump system. The method includes: If the remaining battery power is greater than the preset starting remaining battery power, then the remaining battery power is determined to be within the preset range; If the remaining battery power is within the preset range and the heat pump system is in normal working condition, determine the power output parameters of the photovoltaic module in the first time period. Electrical output parameters include: cumulative output electrical energy, average output power, or output current; The photovoltaic module is determined to have electrical output based on its electrical output parameters. If there is electrical energy output, the average output power of the photovoltaic module during the first time period is queried, and the heat pump system is controlled to operate at the average output power during the second time period. The second time period is after the first time period, and the duration of the second time period is the same as the duration of the first time period. If there is no electrical power output, the heat pump system is controlled to operate at a preset power. The heat pump system includes a heat pump, a water tank, and a circulation pipe; the circulation pipe is located between the heat pump and the water tank and is used to provide heat exchange circulation between the heat pump and the water tank; Determining that the heat pump system is in normal operating condition includes: When the heat pump system is running, it is determined whether the temperature of the water tank is lower than the preset temperature; If the temperature of the water tank is lower than the preset temperature, then the heat pump system is determined to be in normal working condition. The heat pump system converts the electrical energy output by the photovoltaic module into heat energy for storage during the day, and provides heat to the outside through the water tank at night.

2. The control method for the solar photovoltaic heat pump system as described in claim 1, characterized in that, Also includes: If the remaining power is greater than the preset starting remaining power, the heat pump system is controlled to start running when it is in a shutdown state, and the heat pump system is controlled to continue running when it is already in a running state.

3. The control method for the solar photovoltaic heat pump system as described in claim 1, characterized in that, Also includes: Determine whether the remaining battery power is less than the preset stop remaining battery power; The preset stop remaining battery level is less than the preset start remaining battery level; If the remaining power is less than the preset stop remaining power, the heat pump system is controlled to stop operating.

4. A control device for a solar photovoltaic heat pump system, characterized in that, The solar photovoltaic heat pump system includes photovoltaic modules, batteries, and a heat pump system. The photovoltaic modules are used to convert solar energy into electrical energy and store the electrical energy in the batteries or the heat pump system. The device includes: If the determination module finds that the remaining battery power is greater than the preset remaining battery power for startup, then it determines that the remaining battery power is within the preset range. If the remaining battery power is within the preset range and the heat pump system is in normal working condition, determine the power output parameters of the photovoltaic module in the first time period. Electrical output parameters include: cumulative output electrical energy, average output power, or output current; The photovoltaic module is determined to have electrical output based on its power output parameters. The first control module is configured to query the average output power of the photovoltaic module during a first time period when there is electrical energy output, and control the heat pump system to operate at the average output power during a second time period, wherein the second time period is after the first time period and the duration of the second time period is the same as the duration of the first time period. The second control module is configured to control the heat pump system to operate at a preset power when there is no power output; The heat pump system includes a heat pump, a water tank, and a circulation pipe; the circulation pipe is located between the heat pump and the water tank and is used to provide heat exchange circulation between the heat pump and the water tank; The judgment module is configured to determine whether the temperature of the water tank is lower than a preset temperature when the heat pump system is running; If the temperature of the water tank is lower than the preset temperature, then the heat pump system is determined to be in normal working condition.

5. An electronic device, characterized in that, The method includes a memory and a processor, wherein the memory is used to store a computer program executable by the processor; and the processor is used to execute the computer program in the memory to implement the method as described in any one of claims 1 to 3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the executable computer program in the storage medium is executed by a processor, it can implement the method as described in any one of claims 1 to 3.

7. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the method as described in any one of claims 1 to 3.

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