Air conditioning system and control method thereof

Abstract

The embodiment of the invention provides an air conditioning system and a control method thereof, relates to the technical field of air conditioners, and aims to prolong the service life of an energy storage battery. The air conditioning system comprises a photovoltaic module used for collecting solar energy and converting the solar energy into electric energy; the energy storage battery is used for storing electric energy; the controller is configured to obtain the working state information of the air conditioning system, the residual electric quantity of the energy storage battery and the weather information of the geographic position where the air conditioning system is located; determining required electric energy of the air conditioning system according to the working state information and the weather information; determining the supply electric energy of the photovoltaic module according to the weather information; and determining whether the energy storage battery needs to be charged or not according to the required electric energy, the supplied electric energy and the residual electric quantity of the energy storage battery.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air conditioning system and a control method thereof. Background Art

[0002] With the development needs of carbon peak and carbon neutrality, the status of building energy conservation and green buildings is becoming increasingly important. Among them, the energy consumption of air-conditioning systems accounts for as much as 60% of building energy consumption. In order to reduce the energy consumption of air-conditioning systems, more and more air-conditioning systems use more energy-saving and environmentally friendly clean energy. Among them, solar energy is an important choice. Since solar energy is a renewable energy source with almost no emissions, using solar energy as an energy source can significantly reduce the carbon emissions of air-conditioning systems and reduce dependence on traditional energy.

[0003] At present, most air conditioning systems that use solar energy as energy use photovoltaic modules, which can convert solar energy into electrical energy to power the air conditioning system. The electrical energy generated by photovoltaic modules can also be stored in energy storage batteries, which can also be used to power the air conditioning system when needed.

[0004] However, when the air conditioning system is in shutdown state, the photovoltaic module will still generate electricity and try to charge the energy storage battery. In this case, the photovoltaic module not only fails to play the role of the photovoltaic module, but also increases the number of charge and discharge times of the energy storage battery, thus affecting the service life of the energy storage battery. Summary of the invention

[0005] The present application provides an air conditioning system and a control method thereof, which are used to extend the life of an energy storage battery.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions.

[0007] In a first aspect, an embodiment of the present application provides an air-conditioning system, which includes: a photovoltaic component for receiving collected solar energy and converting the solar energy into electrical energy; an energy storage battery for storing electrical energy; a controller configured to: obtain working status information of the air-conditioning system, the remaining power of the energy storage battery, and weather information of the geographical location of the air-conditioning system; determine the required electrical energy of the air-conditioning system based on the working status information and weather information; determine the supplied electrical energy of the photovoltaic component based on the weather information; and determine whether the energy storage battery needs to be charged based on the required electrical energy, the supplied electrical energy, and the remaining power of the energy storage battery.

[0008] The technical solution provided by the embodiment of the present application brings at least the following beneficial effects: The present application provides an air-conditioning system, which includes a photovoltaic module, an energy storage battery, etc., so that it can use solar energy to power itself. The air-conditioning system can obtain the working status information of the air-conditioning system and the weather information of the geographical location of the air-conditioning system, and then determine the required power of the air-conditioning system based on the working status information and the weather information. Since weather information will affect the power generation efficiency of the photovoltaic module, the supply power of the photovoltaic module can also be determined based on the weather information. Furthermore, based on the required power, the supplied power and the remaining power of the energy storage battery, it can be determined in advance whether the energy storage battery needs to be charged. This intelligent charging control method can reduce the number of charge and discharge times of the energy storage battery, extend the service life of the energy storage battery, and then through the combination of the energy storage battery and the photovoltaic module, the energy-saving effect can be maximized.

[0009] In some embodiments, the controller is configured to determine whether the energy storage battery needs to be charged based on the required power, supplied power and the remaining power of the energy storage battery. Specifically, it is configured to determine that the energy storage battery needs to be charged when the sum of the supplied power and the remaining power of the energy storage battery is less than the required power.

[0010] In some embodiments, the controller is configured to determine whether the energy storage battery needs to be charged based on the required power, supplied power and the remaining power of the energy storage battery. Specifically, it is configured to determine that the energy storage battery does not need to be charged when the sum of the supplied power and the remaining power of the energy storage battery is greater than or equal to the required power.

[0011] In some embodiments, the controller is further configured to: when it is determined that the energy storage battery needs to be charged, determine the required charging power of the energy storage battery based on the required power, supplied power and the remaining power of the energy storage battery; and charge the energy storage battery based on the charging power.

[0012] In some embodiments, the working status information includes historical working status information and preset working status information for a future time period; the required power of the air conditioning system is determined based on the historical working status information, the preset working status information and weather information.

[0013] In some embodiments, the air-conditioning system also includes: a communication component, which is communicatively connected to a cloud server; a controller, which is configured to obtain weather information of the geographical location of the air-conditioning system through the communication component, and is specifically configured to: obtain the geographical location of the air-conditioning system; send the geographical location of the air-conditioning system to the cloud server through the communication component; and receive weather information of the geographical location of the air-conditioning system sent by the cloud server.

[0014] In a second aspect, an embodiment of the present application provides a control method for an air-conditioning system, which is applied to the air-conditioning system, and the method includes: obtaining working status information of the air-conditioning system, the remaining power of an energy storage battery, and weather information of the geographical location of the air-conditioning system; determining the required power of the air-conditioning system based on the working status information and weather information; determining the supplied power of the photovoltaic component based on the weather information; and determining whether the energy storage battery needs to be charged based on the required power, the supplied power, and the remaining power of the energy storage battery.

[0015] In some embodiments, whether the energy storage battery needs to be charged is determined based on the required power, the supplied power and the remaining power of the energy storage battery, including: when the sum of the supplied power and the remaining power of the energy storage battery is less than the required power, determining that the energy storage battery needs to be charged.

[0016] In some embodiments, whether the energy storage battery needs to be charged is determined based on the required power, the supplied power and the remaining power of the energy storage battery, including: when the sum of the supplied power and the remaining power of the energy storage battery is greater than or equal to the required power, determining that the energy storage battery does not need to be charged.

[0017] In some embodiments, the method further includes: when it is determined that the energy storage battery needs to be charged, determining the required charging power of the energy storage battery based on the required power, supplied power and the remaining power of the energy storage battery; and charging the energy storage battery based on the charging power.

[0018] In a third aspect, an embodiment of the present application provides a controller comprising: one or more processors; one or more memories; wherein the one or more memories are used to store computer program codes, the computer program codes include computer instructions, and when the one or more processors execute the computer instructions, the controller executes any one of the air-conditioning system control methods provided in the second aspect.

[0019] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which includes computer instructions. When the computer instructions are executed on a computer, the computer executes any one of the air-conditioning system control methods provided in the second aspect.

[0020] In a fifth aspect, an embodiment of the present invention provides a computer program product, which can be directly loaded into a memory and contains software code. After being loaded and executed by a computer, the computer program product can implement any air-conditioning system control method provided in the second aspect.

[0021] It should be noted that the above computer instructions may be stored in whole or in part on a computer-readable storage medium, wherein the computer-readable storage medium may be packaged together with the processor of the controller, or may be packaged separately from the processor of the controller, which is not limited in this application.

[0022] The beneficial effects described in the second to fifth aspects of the present application can be referred to the beneficial effect analysis of the first aspect and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0024] Figure 1 A schematic diagram of the composition of an air conditioning system provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the composition of an air conditioning device provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the structure of an air conditioning device provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the circulation principle of an air conditioning device provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the circulation principle of an air conditioning device provided in an embodiment of the present application;

[0029] Figure 6 A hardware configuration block diagram of an air conditioning system provided in an embodiment of the present application;

[0030] Figure 7 A flow chart of a control method for an air conditioning system provided in an embodiment of the present application;

[0031] Figure 8 A flow chart of a control method for an air conditioning system provided in an embodiment of the present application;

[0032] Fig. 9 A flow chart of a control method for an air conditioning system provided in an embodiment of the present application;

[0033] Fig.10 A schematic diagram of the structure of another air conditioning system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, when describing a pipeline, the "connected" and "connection" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0038] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0039] In the present application, the air conditioning system performs the refrigeration cycle of the air conditioning system by using a compressor, a condenser, an electronic expansion valve, an evaporator and a four-way valve as a refrigerant circulation loop. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been conditioned and heat exchanged.

[0040] The compressor compresses the refrigerant gas in a high temperature and high pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0041] The electronic expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the electronic expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioning system can adjust the temperature of the indoor space.

[0042] The outdoor unit of the air conditioning system refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioning system includes an indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.

[0043] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioning system functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioning system functions as a cooler in a cooling mode.

[0044] In order to extend the service life of the energy storage battery, an embodiment of the present application provides a control method for an air-conditioning system, which can obtain the working status information of the air-conditioning system and the weather information of the geographical location of the air-conditioning system, and then determine the required power of the air-conditioning system based on the working status information and weather information. Since weather information will affect the power generation efficiency of the photovoltaic module, the supply power of the photovoltaic module can also be determined based on the weather information. Furthermore, based on the required power, the supplied power and the remaining power of the energy storage battery, it can be determined in advance whether the energy storage battery needs to be charged. This intelligent charging control method can reduce the number of charge and discharge times of the energy storage battery, extend the service life of the energy storage battery, and then through the combination of the energy storage battery and the photovoltaic module, the energy saving effect can be maximized.

[0045] Figure 1 FIG. 1 is a schematic diagram of the composition of an air conditioning system provided by the present application according to an exemplary embodiment. Figure 1 As shown, the air conditioning system 100 includes a photovoltaic module 101, an air conditioning device 102, an energy storage battery 103 and a controller 104 ( Figure 1 not shown).

[0046] In some embodiments, the photovoltaic assembly 101 is used to collect solar energy and convert the collected solar energy into electrical energy to power the air conditioning device 102 .

[0047] In some embodiments, the energy storage battery 103 is used to store electrical energy and can also provide power for the air conditioning device 102 .

[0048] In some embodiments, the energy storage battery 103 may be connected to the photovoltaic module 101, so that the energy storage battery 103 can store the electric energy from the photovoltaic module 101. The energy storage battery 103 may also be connected to the public power grid, so that the energy storage battery 103 can also store the electric energy from the public power grid.

[0049] It should be understood that in different application scenarios, the public power grid can be any one of single-phase power, two-phase power or three-phase power.

[0050] In some embodiments, the controller 104 refers to a device that can generate an operation control signal according to the instruction operation code and the timing signal to instruct the air conditioning system to execute the control instruction. Exemplarily, the controller can be a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The controller can also be other devices with processing functions, such as circuits, devices, or software modules, and the embodiments of the present application do not impose any restrictions on this.

[0051] In addition, the controller 104 can be used to control the operation of various components inside the air-conditioning system 100, so that the various components of the air-conditioning system 100 can operate to achieve various predetermined functions of the air-conditioning system.

[0052] In some embodiments, Figure 2 As shown, the air conditioning device 102 includes an indoor unit 201 and an outdoor unit 202 .

[0053] In some embodiments, the indoor unit 201 is used as an indoor hanging unit ( Figure 2 As an example, indoor wall mounted units are usually installed on indoor walls. Figure 2 (not shown) is also a type of indoor unit.

[0054] The outdoor unit 202 is usually set outdoors and used for indoor environment heat exchange. Figure 2 In the figure, since the outdoor unit 202 is located outdoors on the opposite side of the indoor unit 201 across the wall, the outdoor unit 202 is indicated by a dotted line.

[0055] In some embodiments, Figure 3 As shown, the outdoor unit 202 includes a compressor 301, an outdoor heat exchanger 306, a liquid storage tank 303, a four-way valve 304, and a throttling device 305. The indoor unit 201 includes an indoor heat exchanger 306.

[0056] In some embodiments, the compressor 301 is disposed between the throttling device 305 and the liquid reservoir 303 , and is used to compress the refrigerant delivered by the liquid reservoir 303 , and deliver the compressed refrigerant to the throttling device via the four-way valve 304 .

[0057] In some embodiments, one end of the outdoor heat exchanger 302 is connected to the liquid reservoir 303 through a four-way valve 304, and the other end is connected to the throttling device 305. The outdoor heat exchanger 302 has a first inlet and outlet for allowing the refrigerant to flow between the outdoor heat exchanger 302 and the suction port of the compressor 301 via the liquid reservoir 303, and has a second inlet and outlet for allowing the refrigerant to flow between the outdoor heat exchanger 302 and the throttling device 305. The outdoor heat exchanger 302 exchanges heat between the heat exchanger flowing in the heat transfer pipe connected between the first inlet and outlet and the second inlet and outlet and the outdoor air. In the cold cycle, the outdoor heat exchanger 302 works as a condenser.

[0058] In some embodiments, one end of the accumulator 303 is connected to the compressor 301, and the other end is connected to the outdoor heat exchanger 302 through the four-way valve 304. In the accumulator 303, the refrigerant flowing from the outdoor heat exchanger 302 to the compressor 301 via the four-way valve 304 is separated into gas refrigerant and liquid refrigerant. In addition, the gas refrigerant is mainly supplied from the accumulator 303 to the suction port of the compressor 301.

[0059] In some embodiments, the four ports of the four-way valve 304 are respectively connected to the compressor 301, the outdoor heat exchanger 302, the liquid storage tank 303 and the indoor heat exchanger 306. The four-way valve 304 is used to achieve mutual conversion between cooling and heating by changing the flow direction of the refrigerant in the system pipeline.

[0060] In some embodiments, the indoor heat exchanger 306 has a third inlet and outlet for allowing liquid refrigerant to flow between the four-way valve 304 and a fourth inlet and outlet for allowing gaseous refrigerant to flow between the discharge port of the compressor 301. The indoor heat exchanger 306 exchanges heat between the refrigerant flowing in the heat transfer pipe connected between the third inlet and the fourth inlet and outlet and the indoor air.

[0061] Figure 4 Schematic diagram of the circulation principle of an air conditioning system provided by the present application according to an exemplary embodiment. Figure 4As shown, in the cooling mode of the air-conditioning system 100, the low-temperature and low-pressure gaseous refrigerant is compressed by the compressor 301 and converted into the high-temperature and high-pressure gaseous refrigerant. The compressed refrigerant enters the outdoor heat exchanger 302 through the four-way valve 304, and condenses into the medium-temperature and high-pressure liquid refrigerant after heat exchange with the outdoor air in the outdoor heat exchanger 302. The refrigerant flowing out of the outdoor heat exchanger 302 is throttled and reduced in pressure by the throttling device 305 to become a low-temperature and low-pressure gas-liquid two-phase refrigerant. The throttled and reduced-pressure refrigerant passes through the indoor heat exchanger 306 to exchange heat with the indoor air to become a low-temperature and low-pressure gaseous refrigerant. The refrigerant flowing out of the indoor heat exchanger 306 enters the liquid storage tank 303 through the four-way valve 304, and returns to the compressor 301 again, thereby realizing the recycling of the refrigerant.

[0062] Figure 5 Schematic diagram of the circulation principle of an air conditioning system provided by the present application according to an exemplary embodiment. Figure 5 As shown, in the heating mode of the air-conditioning system 100, the low-temperature and low-pressure gaseous refrigerant is compressed by the compressor 301 and converted into the high-temperature and high-pressure gaseous refrigerant. The compressed refrigerant enters the indoor heat exchanger 306 through the four-way valve 304, and is converted into the medium-temperature and high-pressure liquid refrigerant after heat exchange with the indoor air in the indoor heat exchanger 306. The refrigerant flowing out of the indoor heat exchanger 306 is throttled and reduced in pressure by the throttling device 305 to become a low-temperature and low-pressure gas-liquid two-phase refrigerant. The refrigerant after throttling and decompression passes through the outdoor heat exchanger 302 to exchange heat with the outdoor air to become a low-temperature and low-pressure gaseous refrigerant. The refrigerant flowing out of the outdoor heat exchanger 302 enters the liquid storage tank 303 through the four-way valve, and returns to the compressor 301 again, thereby realizing the recycling of the refrigerant.

[0063] Figure 6 This is a hardware configuration block diagram of an air conditioning system provided by the present application according to an exemplary embodiment. Figure 6 As shown, the air conditioning system 100 may further include: a communication component 401 and a memory 402 .

[0064] In some embodiments, the communication component 401 is used to establish a communication connection with other network entities, such as establishing a communication connection with a terminal device. The communication component 401 may include a radio frequency (RF) module, a cellular module, a wireless fidelity (WIFI) module, and a GPS module. Taking the RF module as an example, the RF module can be used to receive and send signals, in particular, send the received information to the controller 104 for processing; in addition, send the signal generated by the controller 104. Typically, the RF circuit may include but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, etc.

[0065] Optionally, the communication component 401 may be a 4G communication component.

[0066] In some embodiments, the memory 402 can be used to store software programs and data, such as historical operating status information of the air conditioning system. The controller 104 executes various functions and data processing of the air conditioning system 100 by running the software programs or data stored in the memory 402. The memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device. The memory 402 stores an operating system that enables the air conditioning system 100 to run. In the present application, the memory 402 can store an operating system and various application programs, and can also store code for executing the control method of the air conditioning system provided in the embodiment of the present application.

[0067] Those skilled in the art will understand that Figure 6 The hardware structure shown in the figure does not constitute a limitation on the air conditioning system. The air conditioning system may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0068] The embodiments provided in this application are described in detail below in conjunction with the accompanying drawings.

[0069] like Figure 7 As shown, the embodiment of the present application provides a control method for an air conditioning system, the method comprising the following steps:

[0070] S101. The controller obtains the working status information of the air-conditioning system, the remaining power of the energy storage battery, and the weather information of the geographical location where the air-conditioning system is located.

[0071] The working status information may include historical working status information and preset working status information for a future time period.

[0072] Optionally, the future time period may be one day, two days, three days, etc., and the historical time period may be one week, one month, etc.

[0073] In some embodiments, the working status information may include the operating mode, operating time, set temperature, wind speed, etc. of the air-conditioning system.

[0074] In some embodiments, the weather information of the geographical location where the air conditioning system is located may include outdoor temperature, light intensity, etc. Among them, the level of light intensity may include weak light, medium light, strong light, etc.

[0075] In some embodiments, the controller may obtain the operating status information of the air-conditioning system in a future time period, and may also obtain the operating status information of the air-conditioning system in a historical time period.

[0076] In one example, a user may set the working status information of the air-conditioning system in a future time period through a centralized controller, a wired controller, etc. Furthermore, the controller may obtain the working status information of the air-conditioning system in a historical time period.

[0077] For example, taking today as January 1, 2023, the user can set the air conditioning system to run in heating mode from 8:00 to 17:30 on the next day (ie January 2, 2023), with the set temperature at 30°C and the wind speed at medium speed.

[0078] For example, the user can also set the working status information of the air conditioning system in the future time period according to working days and non-working days. For example, the user can set the air conditioning system to run the heating mode from 8:00 to 17:30 on working days (i.e. Monday to Friday), set the temperature to 29°C, and the wind speed to low speed. The air conditioning system can also be set to be turned off on non-working days (i.e. Saturday and Sunday).

[0079] In another example, the controller may obtain historical operating status information of the air-conditioning system in a historical time period from the memory.

[0080] For example, taking today as January 1, 2023, the air-conditioning system has been running in heating mode for the past week (that is, from December 25, 2022 to December 31, 2022), with an average set temperature of 28 degrees and an average operating time of 8 hours.

[0081] In some embodiments, a power monitoring device is provided on the energy storage battery to monitor the remaining power of the energy storage battery, so that the controller can obtain the remaining power of the energy storage battery through the power monitoring device.

[0082] In some embodiments, the controller can obtain weather information of the geographical location of the air conditioning system through a cloud server, and store the weather information locally, so that the controller can analyze and calculate the obtained weather information locally.

[0083] It is understandable that this method of obtaining weather information of the geographical location of the air conditioning system from the cloud server and storing it locally can prevent user information leakage and reduce the risk of privacy leakage caused by unauthorized access. In addition, it can also reduce data transmission between the cloud server and reduce network communication costs.

[0084] Exemplarily, the controller may first obtain the geographical location of the air-conditioning system, and send the geographical location to the cloud server, and then receive weather information of the geographical location of the air-conditioning system sent by the cloud server.

[0085] In addition, the specific method for obtaining weather information about the geographical location of the air conditioning system can refer to the following Fig. 9 The embodiments shown will not be described in detail here.

[0086] S102: The controller determines the required power of the air conditioning system according to the working status information and weather information.

[0087] In some embodiments, the required power of the air conditioning system may be determined based on preset working status information and weather information, or may be determined based on historical working status information, preset working status information, and weather information.

[0088] In one example, when the required power of the air-conditioning system is determined based on historical working state information, preset working state information and weather information, the controller can determine whether the preset working state information is the same as the historical working state information.

[0089] Further, when the preset working state information is the same as the historical working state information, the controller may obtain the difference between the outdoor temperature in the future time period and the outdoor temperature in the historical time period.

[0090] It should be noted that even if the preset working state information is the same as the historical working state information, the power demand of the air conditioning system is different under different weather information such as outdoor temperature. For example, in summer, the power demand of the air conditioning system at an outdoor temperature of 35°C is less than the power demand of the air conditioning system at an outdoor temperature of 40°C.

[0091] Furthermore, the controller can determine the increase rate of the required electric energy based on a preset correspondence between the difference and the increase rate of the required electric energy, thereby multiplying the increase rate of the required electric energy by the required electric energy of the air-conditioning system in the historical time period as the required electric energy of the air-conditioning system in the future time period.

[0092] Exemplarily, the preset corresponding relationship between the absolute value of the difference and the increase rate of the required electric energy is shown in the following Table 1.

[0093] Table 1

[0094] Absolute value of difference Increase rate of power demand 3 10％ 5 15％ 8 20％

[0095] For example, taking the outdoor temperature in the historical time period as 28°C, the power demand of the air-conditioning system in the historical time period as 60kW·h, and the outdoor temperature in the future time period as 31°C, the difference between the outdoor temperature in the future time period and the outdoor temperature in the historical time period is 3°C, and the increase rate of the power demand is 10%, and the power demand of the air-conditioning system in the future time period is 66kW·h.

[0096] Alternatively, when the preset working state information is different from the historical working state information, the controller can determine the required power of the air conditioning system according to the preset corresponding relationship between the preset working state information, weather information, and the required power of the air conditioning system. The specific description of determining the required power of the air conditioning system in the following example can be referred to, which will not be repeated here.

[0097] In another example, when the power demand of the air-conditioning system is determined based on preset working status information and weather information, the controller can determine the power demand of the air-conditioning system according to a preset correspondence between the preset working status information, weather information and the power demand of the air-conditioning system.

[0098] Exemplarily, the preset correspondence between the preset working status information, weather information and the required power of the air-conditioning system is shown in Table 2 below.

[0099] Table 2

[0100]

[0101] In some embodiments, before determining whether the preset working state information is the same as the historical working state information, the controller may also determine whether the future time period does not include a non-working day. If the time period includes a non-working day, the operating state information and weather information of the air conditioning system on the non-working day may not be considered when determining the energy consumption of the air conditioning system in the future time period.

[0102] It should be noted that the above steps are performed because the usage demand of the air conditioning system on non-working days and working days will be different, and these differences will affect the energy consumption of the air conditioning system. Therefore, to determine whether the future time period includes the time period of non-working days, we can focus on the demand analysis of the air conditioning system on working days, so as to more accurately predict the energy consumption of the air conditioning system in the future time period.

[0103] S103: The controller determines the power supply of the photovoltaic module according to weather information.

[0104] In some embodiments, the controller may determine the power generation efficiency of the photovoltaic module according to a preset correspondence between the weather information and the power generation efficiency of the photovoltaic module. Further, the controller may determine the power supply of the photovoltaic module as the product of the power generation efficiency of the photovoltaic module, the rated power supply of the photovoltaic module, and the duration of illumination.

[0105] Exemplarily, the controller may determine the power supply of the photovoltaic assembly according to a preset correspondence between light intensity and power generation efficiency of the photovoltaic assembly, wherein the preset correspondence between light intensity and power supply of the photovoltaic assembly is shown in Table 3 below.

[0106] Table 3

[0107] Light intensity Power generation efficiency Low light 30％ medium light 50％ glare 80％

[0108] Understandably, due to the duration of sunlight and the angle at which sunlight hits the photovoltaic module, the power generation efficiency of the photovoltaic module will be less than 100%.

[0109] For example, taking the rated power supply of the photovoltaic module as 10 kW·h, the light intensity as strong light, and the light duration as 4 hours, the power generation efficiency of the photovoltaic module is 80%, and thus the power supply of the photovoltaic module is 32 kW·h.

[0110] In one possible implementation, the controller may input weather information into a power supply model of a photovoltaic module, such as a single diode model of a photovoltaic module. The single diode model of the photovoltaic module performs calculations and analyses based on the input weather information and outputs the power supply of the photovoltaic module.

[0111] S104: The controller determines whether the energy storage battery needs to be charged according to the required power, the supplied power and the remaining power of the energy storage battery.

[0112] In some embodiments, when the sum of the supplied electric energy and the remaining power of the energy storage battery is less than the required electric energy, it is determined that the energy storage battery needs to be charged.

[0113] It is understandable that if the sum of the supplied power and the remaining power of the energy storage battery is less than the required power, it means that the remaining power of the energy storage battery is insufficient to meet the required power of the air conditioning system in the future time period. Therefore, in order to meet the required power of the air conditioning system in the future time period, the energy storage battery needs to be charged to increase the remaining power of the energy storage battery.

[0114] For example, the power supply of the photovoltaic component in the next 24 hours is 32kW·h, the remaining power of the energy storage battery is 10kW·h, and the power demand of the air-conditioning system in the next 24 hours is 70.4kW·h. Since 32kW·h+10kW·h<70.4kW·h, the controller determines that the energy storage battery needs to be charged.

[0115] In some embodiments, when the sum of the supplied electric energy and the remaining power of the energy storage battery is greater than or equal to the required electric energy, it is determined that the energy storage battery does not need to be charged.

[0116] It can be understood that if the sum of the supplied power and the remaining power of the energy storage battery is greater than or equal to the required power, it means that the remaining power of the energy storage battery can meet the required power of the air-conditioning system in the future time period, so there is no need to charge the energy storage battery.

[0117] For example, the power supply of the photovoltaic component in the next 24 hours is 32kW·h, the remaining power of the energy storage battery is 10kW·h, and the power demand of the air-conditioning system in the next 24 hours is 70.4kW·h. Since 32kW·h+10kW·h<70.4kW·h, the controller determines that the energy storage battery needs to be charged.

[0118] It should be noted that the controller may first execute step S102 and then execute step S103, or may first execute step S103 and then execute step S102. The embodiment of the present application does not impose any specific limitation on the execution order of step S102 and step S103.

[0119] based on Figure 7 In the embodiment shown, the embodiment of the present application provides a control method for an air-conditioning system, which can obtain the working status information of the air-conditioning system and the weather information of the geographical location of the air-conditioning system, and then determine the required power of the air-conditioning system based on the working status information and the weather information. Since weather information will affect the power generation efficiency of the photovoltaic module, the supply power of the photovoltaic module can also be determined based on the weather information. Furthermore, based on the required power, the supplied power and the remaining power of the energy storage battery, it can be determined in advance whether the energy storage battery needs to be charged. This intelligent charging control method can reduce the number of charge and discharge times of the energy storage battery, extend the service life of the energy storage battery, and then through the combination of the energy storage battery and the photovoltaic module, the energy saving effect can be maximized.

[0120] In some embodiments, Figure 8 As shown, the control method of the air conditioning system provided in the embodiment of the present application may also include the following steps:

[0121] S201. When determining that the energy storage battery needs to be charged, the controller determines the required charging power of the energy storage battery according to the required power, the supplied power and the remaining power of the energy storage battery.

[0122] In some embodiments, the controller may first obtain the sum of the supplied power and the remaining power of the energy storage battery when determining that the energy storage battery needs to be charged. For example, if the supplied power is 32kW·h and the remaining power of the energy storage battery is 10kW·h, the sum is 42kW·h.

[0123] Furthermore, the controller may obtain the difference between the sum and the required electric energy. For example, if the sum is 42 kW·h and the required electric energy is 70.4 kW·h, then the difference between the sum and the required electric energy is 28.4 kW·h.

[0124] Furthermore, the controller determines the charging power required for the energy storage battery according to a preset corresponding relationship between the difference and the charging power required for the energy storage battery.

[0125] Optionally, the charging amount required by the energy storage battery is positively correlated with the difference.

[0126] Exemplarily, the rated capacity of the energy storage battery is 40kW·h, and the difference is 28.4kW·h. According to the preset correspondence between the difference and the charging capacity required for the energy storage battery, it is determined that the charging capacity required for the energy storage battery is 30kW·h, that is, the energy storage battery is fully charged so that the remaining capacity of the energy storage battery is 40kW·h.

[0127] S202: The controller charges the energy storage battery according to the charging power.

[0128] In some embodiments, the controller switches the discharge mode of the energy storage battery to the charging mode through the energy storage battery control device according to the charging power.

[0129] Furthermore, during off-peak electricity price periods, the energy storage battery is charged using the public power grid until the remaining power of the energy storage battery reaches the sum of the charged power and the remaining power.

[0130] It should be noted that the electricity rate is lower during off-peak hours. The controller can reduce the cost of charging the energy storage battery by using the public power grid to charge the energy storage battery during off-peak hours.

[0131] In some embodiments, in order to obtain weather information of the geographical location where the air conditioning system is located, such as Fig. 9 As shown, the control method of the air conditioning system provided in the embodiment of the present application may also include the following steps:

[0132] S301. The controller obtains the geographical location of the air conditioning system.

[0133] In some embodiments, the controller may obtain the geographical location of the air conditioning system through a geographical location positioning device in the air conditioning system, or may obtain the geographical location of the air conditioning system through Wi-Fi network information connected to the air conditioning system.

[0134] In one example, a geographic location positioning device, such as a global positioning system (GPS), is provided in the air conditioning system, so that the controller can communicate with a satellite via the GPS to obtain the geographic location of the air conditioning system.

[0135] In another example, the controller may obtain the geographical location of the air-conditioning system through the Wi-Fi network information to which the air-conditioning system is connected, such as the Internet Protocol address (IP) address, and the IP address positioning service.

[0136] S302. The controller sends the geographical location of the air conditioning system to the cloud server through the communication component.

[0137] Optionally, the communication component may be a 4G communication component.

[0138] Exemplarily, the controller may send the geographical location of the air conditioning system to the cloud server via a 4G communication component.

[0139] S303. The controller receives weather information of the geographical location of the air conditioning system sent by the cloud server.

[0140] In some embodiments, the controller may receive weather information of the geographical location of the air conditioning system sent by the cloud server through the communication component.

[0141] It can be seen that the above mainly introduces the solution provided by the embodiment of the present application from the perspective of the method. In order to achieve the above functions, the embodiment of the present application provides a hardware structure and / or software module corresponding to each function. It should be easily appreciated by those skilled in the art that, in combination with the modules and algorithm steps of each example described in the embodiment disclosed herein, the embodiment of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0142] The embodiment of the present application can divide the controller into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. Optionally, the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0143] The present application provides a structural schematic diagram of an air conditioning system according to an exemplary embodiment, such as Fig.10 As shown, the air conditioning system 800 includes a photovoltaic component control module 801, a storage battery control module 802, an air conditioning equipment operation control module 803, an electric energy prediction module 804, a communication module 805, a storage module 806 and a preset working status information setting module 807.

[0144] The photovoltaic component control module 801 is used to control the photovoltaic component to supply power to the air-conditioning system or to supply power to the energy storage battery.

[0145] The energy storage battery control module 802 is used to control the charge and discharge state of the energy storage battery and monitor the remaining power of the energy storage battery. When the energy storage battery is in the charging state, the energy storage battery can be charged. When the energy storage battery is in the discharging state, the energy storage battery cannot be charged.

[0146] The air conditioning equipment operation control module 803 is used to control the operation mode of the air conditioning equipment.

[0147] The power prediction module 804 is used to determine the power demand of the air conditioning system according to the working state information and weather information. It is also used to determine the power supply of the photovoltaic module according to the weather information. It can also be used to determine whether the energy storage battery needs to be charged according to the power demand, the power supply and the remaining power of the energy storage battery.

[0148] The communication module 805 is used to obtain the working status information of the air-conditioning system, the remaining power of the energy storage battery, and the weather information of the geographical location where the air-conditioning system is located.

[0149] The storage module 806 is used to store the historical working status information of the air conditioning system.

[0150] The preset working state information setting module 807 is used to set the preset working state information of the air conditioning system in the future time period.

[0151] An embodiment of the present application also provides a computer-readable storage medium, which includes computer execution instructions. When the computer execution instructions are executed on a computer, the computer executes a control method for an air-conditioning system provided in the above embodiment.

[0152] An embodiment of the present application also provides a computer program product, which can be directly loaded into a memory and contains software code. After being loaded and executed by a computer, the computer program product can implement a control method for an air-conditioning system provided in the above embodiment.

[0153] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the present invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented using software, the functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium may be any available medium that a general or special-purpose computer can access.

[0154] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An air conditioning system, characterized in that: include: Energy storage batteries, used to store electrical energy; Photovoltaic modules for collecting solar energy and converting it into electrical energy; The controller is configured as: Obtaining the working status information of the air conditioning system, the remaining power of the energy storage battery, and the weather information of the geographical location where the air conditioning system is located; Determining the required power of the air conditioning system according to the working status information and the weather information; Determining the power supply of the photovoltaic assembly according to the weather information; Determine whether the energy storage battery needs to be charged according to the required electric energy, the supplied electric energy and the remaining power of the energy storage battery.

2. The air conditioning system according to claim 1, characterized in that: The controller is configured to determine whether the energy storage battery needs to be charged according to the required electric energy, the supplied electric energy and the remaining power of the energy storage battery, and is specifically configured as follows: When the sum of the supplied electric energy and the remaining power of the energy storage battery is less than the required electric energy, it is determined that the energy storage battery needs to be charged.

3. The air conditioning system according to claim 1, characterized in that: The controller is configured to determine whether the energy storage battery needs to be charged according to the required electric energy, the supplied electric energy and the remaining power of the energy storage battery, and is specifically configured as follows: When the sum of the supplied electric energy and the remaining power of the energy storage battery is greater than or equal to the required electric energy, it is determined that the energy storage battery does not need to be charged.

4. The air conditioning system according to claim 1, characterized in that: The controller is also configured to: In the case where it is determined that the energy storage battery needs to be charged, determining the charging power required for the energy storage battery according to the required power, the supplied power and the remaining power of the energy storage battery; The energy storage battery is charged according to the charging quantity.

5. The air conditioning system according to claim 1, characterized in that: The working status information includes historical working status information and preset working status information for a future time period; the required power of the air-conditioning system is determined based on the historical working status information, the preset working status information and the weather information.

6. The air conditioning system according to any one of claims 1 to 5, characterized in that: The air conditioning system further comprises: a communication component, which is communicatively connected to the cloud server; The controller is configured to obtain weather information of the geographical location of the air conditioning system through the communication component, and is specifically configured to: Obtaining the geographical location of the air conditioning system; Sending the geographical location of the air conditioning system to the cloud server through the communication component; Receive weather information of the geographical location of the air conditioning system sent by the cloud server.

7. A method for controlling an air conditioning system, characterized in that: include: Obtaining the working status information of the air conditioning system, the remaining power of the energy storage battery, and the weather information of the geographical location where the air conditioning system is located; Determining the required power of the air conditioning system according to the working status information and the weather information; Determining the power supply of the photovoltaic module according to the weather information; Determine whether the energy storage battery needs to be charged according to the required electric energy, the supplied electric energy and the remaining power of the energy storage battery.

8. The method according to claim 7, characterized in that The determining whether the energy storage battery needs to be charged according to the required electric energy, the supplied electric energy and the remaining power of the energy storage battery comprises: When the sum of the supplied electric energy and the remaining power of the energy storage battery is less than the required electric energy, it is determined that the energy storage battery needs to be charged.

9. The method according to claim 7, characterized in that: The determining whether the energy storage battery needs to be charged according to the required electric energy, the supplied electric energy and the remaining power of the energy storage battery comprises: When the sum of the supplied electric energy and the remaining power of the energy storage battery is greater than or equal to the required electric energy, it is determined that the energy storage battery does not need to be charged.

10. The method according to claim 7, characterized in that The method further comprises: In the case where it is determined that the energy storage battery needs to be charged, determining the charging power required for the energy storage battery according to the required power, the supplied power and the remaining power of the energy storage battery; The energy storage battery is charged according to the charging quantity.

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