Method and device for determining capacity of energy storage battery of air conditioner and photovoltaic air conditioning system

Abstract

The application provides a capacity determination method and device of an energy storage battery of an air conditioner and a photovoltaic air conditioner system. The air conditioner is not electrically connected with a power grid, and the air conditioner is electrically connected with an energy storage battery and a photovoltaic component. The method comprises the following steps: obtaining electric consumption information and power generation information. The electric consumption information represents the electric consumption of the air conditioner in a first predetermined period, and the power generation information represents the power generation of the photovoltaic component in the first predetermined period. In a first determination step, the battery power demand information in the first predetermined period is determined according to the electric consumption information and the power generation information. In a second determination step, the design capacity of the energy storage battery is determined according to at least the battery power demand information. The application at least solves the problem of large investment cost of the photovoltaic air conditioner system without power supply in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic air conditioners, in particular to a capacity determination method and device for an energy storage battery of an air conditioner, a computer readable storage medium and a photovoltaic air conditioner system. BACKGROUND

[0002] Solar energy is a most potential renewable energy, which has attracted extensive attention due to its wide distribution, huge quantity, cleanliness and safety. Since the 21st century, photovoltaic power generation technology has developed rapidly, and the cost of photovoltaic modules has decreased year by year. Photovoltaic power generation brings new possibilities for indoor environmental control in areas far from city power or unstable power supply, and photovoltaic air conditioners emerge as the times require.

[0003] As a new technology, photovoltaic air conditioners are greatly affected by natural environment, usage method and installation location, and the cost of energy storage systems is relatively high. Therefore, it is difficult to popularize photovoltaic air conditioners with energy storage systems. Therefore, avoiding energy storage capacity waste, reducing investment cost and improving yield are the primary problems faced by the promotion of photovoltaic air conditioners.

[0004] Especially for photovoltaic air conditioners without city power supply, how to reduce the investment cost of the energy storage battery while ensuring the normal operation of the photovoltaic air conditioner is a technical problem that needs to be solved. SUMMARY

[0005] The main purpose of the present application is to provide a capacity determination method and device for an energy storage battery of an air conditioner, a computer readable storage medium and a photovoltaic air conditioner system, so as to at least solve the problem of large investment cost of the existing photovoltaic air conditioner system without city power supply.

[0006] In order to achieve the above purpose, according to one aspect of the present application, a capacity determination method for an energy storage battery of an air conditioner is provided, the air conditioner is not electrically connected with a city power grid, the air conditioner is respectively electrically connected with the energy storage battery and a photovoltaic module, and the method comprises: an acquisition step of acquiring power consumption information and power generation information, the power consumption information representing power consumption of the air conditioner in a first predetermined period, and the power generation information representing power generation of the photovoltaic module in the first predetermined period; a first determination step of determining battery power demand information in the first predetermined period according to the power consumption information and the power generation information; and a second determination step of determining a design capacity of the energy storage battery according to at least the battery power demand information.

[0007] Optionally, the obtaining the power consumption information comprises: obtaining room information of a room where the air conditioner is located and meteorological information in the first predetermined period, wherein the room information comprises location information of the room, use of the room, spatial size information of the room, and building material information of the room; simulating, using a building energy consumption simulation engine, load information of the room in the first predetermined period according to the room information and the meteorological information; determining power information of the air conditioner in the first predetermined period according to the load information and operation parameter information of the air conditioner; and determining power consumption of the air conditioner in the first predetermined period according to the power information, to obtain the power consumption information.

[0008] Optionally, the obtaining the power generation information comprises: simulating, using photovoltaic system design auxiliary software, power generation of the photovoltaic component in the first predetermined period, to obtain the power generation information.

[0009] Optionally, the power consumption information comprises power consumption at each time point in the first predetermined period, the power generation information comprises power generation at each time point, and the first determining step comprises: in a case where the power consumption at the time point is greater than the power generation, determining demand power corresponding to the time point as a difference between the power consumption and the power generation; in a case where the power consumption at the time point is less than or equal to the power generation, determining the demand power corresponding to the time point as a preset value; and calculating a sum of the demand power corresponding to each time point, to obtain the battery power demand information.

[0010] Optionally, the preset value is 0 or the difference between the power consumption and the power generation.

[0011] Optionally, before the second determining step, the method further comprises: a loop step of sequentially looping the obtaining step and the first determining step for a predetermined number of times, to obtain a predetermined number of pieces of the battery power demand information, and the second determining step comprises: determining a maximum of the plurality of pieces of the battery power demand information as the design capacity.

[0012] Optionally, after the second determining step, the method further comprises: determining a residual capacity of the energy storage battery after a plurality of the second predetermined time periods, in a case that the energy storage battery supplies power to the air conditioner starting from the design capacity in each second predetermined time period; determining a preset electric quantity according to the capacity attenuation degree of the energy storage battery and the design capacity, the preset electric quantity being a product of the capacity attenuation degree and the design capacity; determining whether the design capacity meets a design requirement according to a plurality of the residual capacities, wherein the residual capacity less than the preset electric quantity is a target capacity, and in a case that a ratio of a number of the target capacities to a total number of the residual capacities is greater than a preset proportion, it is determined that the design capacity does not meet the design requirement; in a case that the design capacity does not meet the design requirement, determining a maximum value of a difference between the preset electric quantity and each of the target capacities, and determining a sum of the design capacity and the maximum value of the difference as a final capacity of the energy storage battery.

[0013] According to another aspect of the present application, there is provided a capacity determination device of an energy storage battery of an air conditioner, the air conditioner being not electrically connected with a power grid, the air conditioner being electrically connected with the energy storage battery and a photovoltaic assembly respectively, the device comprising: an obtaining unit configured to obtain electric consumption information and electric generation information, the electric consumption information representing electric consumption of the air conditioner in a first predetermined time period, the electric generation information representing electric generation of the photovoltaic assembly in the first predetermined time period; a first determining unit configured to determine battery electric quantity requirement information in the first predetermined time period according to the electric consumption information and the electric generation information; and a second determining unit configured to determine a design capacity of the energy storage battery according to at least the battery electric quantity requirement information.

[0014] According to still another aspect of the present application, there is provided a computer readable storage medium, which comprises a stored program, wherein the program, when executed, controls a device in which the computer readable storage medium is located to perform any of the methods.

[0015] According to yet another aspect of the present application, there is provided a photovoltaic air conditioner system, comprising: an energy storage battery, a design capacity of the energy storage battery being determined by any of the methods; a photovoltaic assembly; and an air conditioner, the air conditioner being not electrically connected with a power grid, and being electrically connected with the energy storage battery and the photovoltaic assembly respectively.

[0016] According to the technical solution of the application, first, the power consumption information of the air conditioner in a first predetermined period and the power generation information of the photovoltaic module in the first predetermined period are acquired; then, the battery power demand information in the first predetermined period is determined according to the acquired power consumption information and the power generation information; finally, the design capacity of the energy storage battery is determined at least according to the determined battery power demand information. The design capacity determined by the application in combination with the power consumption information of the air conditioner and the power generation information of the photovoltaic module can not only meet the normal operation demand of the air conditioner without the supply of the power grid, but also ensure that the design capacity basically matches the battery power demand, thereby avoiding the problem of waste of the capacity of the energy storage battery, reducing the investment cost of the photovoltaic air conditioner system, and effectively solving the problem of large investment cost of the photovoltaic air conditioner system without the supply of the power grid in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of the present description, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the present application, and their

[0018] Figure 1 A hardware structure block diagram of a mobile terminal for executing a capacity determination method of an energy storage battery of an air conditioner is shown according to an embodiment of the application;

[0019] Figure 2 A structure schematic diagram of a photovoltaic air conditioner system is shown according to an embodiment of the application;

[0020] Figure 3 A flowchart of a capacity determination method of an energy storage battery of an air conditioner is shown according to an embodiment of the application;

[0021] Figure 4 A flowchart of another capacity determination method of an energy storage battery of an air conditioner is shown according to an embodiment of the application;

[0022] Figure 5 A structure block diagram of a capacity determination device of an energy storage battery of an air conditioner is shown according to an embodiment of the application.

[0023] Among the above-mentioned drawings, the following reference signs are included:

[0024] 10, air conditioner; 11, energy storage battery; 12, photovoltaic module; 102, processor; 104, memory; 106, transmission device; 108, input and output device. DETAILED DESCRIPTION

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] As described in the background section, the investment cost of existing photovoltaic air conditioning systems without mains power supply is relatively high. To solve the above technical problems, embodiments of this application provide a method, apparatus, computer-readable storage medium, and photovoltaic air conditioning system for determining the capacity of an air conditioning energy storage battery.

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a method of determining the capacity of an air conditioner's energy storage battery according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1The illustrated structure is merely schematic and does not limit the structure of the mobile terminal described above. For example, the mobile terminal can further include more or less components than those shown, or have different configurations of the components shown. Figure 1 The illustrated structure is merely schematic and does not limit the structure of the mobile terminal described above. For example, the mobile terminal can further include more or less components than those shown, or have different configurations of the components shown. Figure 1 The illustrated structure is merely schematic and does not limit the structure of the mobile terminal described above. For example, the mobile terminal can further include more or less components than those shown, or have different configurations of the components shown.

[0031] The memory 104 can be used to store computer programs, such as software programs of application software and modules, such as the computer program corresponding to the capacity determination method of the energy storage battery of the air conditioner in the embodiments of the present application. The processor 102 executes various functional applications and data processing, i.e., implements the method described above, by running the computer program stored in the memory 104. The memory 104 can include a high-speed random access memory, and can further include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some examples, the memory 104 can further include a memory remotely arranged with respect to the processor 102, which can be connected to the mobile terminal through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is used to receive or send data via a network. The specific examples of the network can include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, NIC) which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, RF) module which is used to communicate with the Internet in a wireless manner.

[0032] In the embodiments, a capacity determination method of an energy storage battery of an air conditioner running on a mobile terminal, a computer terminal or a similar computing device is provided, wherein, as shown in Figure 2 The air conditioner 10 is not connected to a power grid, and the air conditioner 10 is respectively connected to the energy storage battery 11 and the photovoltaic module 12, and the air conditioner 10 is powered by the energy storage battery 11 and the photovoltaic module 12. It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that herein.

[0033] Figure 3 is a flowchart of the capacity determination method of the energy storage battery of the air conditioner according to the embodiments of the present application. As shown in Figure 3 The method includes the following steps:

[0034] In step S201, an acquisition step, power consumption information and power generation information are acquired, the power consumption information representing power consumption of the air conditioner in a first predetermined time period, and the power generation information representing power generation of the photovoltaic module in the first predetermined time period;

[0035] Specifically, the power consumption information can include power consumption data such as power consumption and power consumption power, and the power generation information can also include photovoltaic production data such as power generation and output power.

[0036] In step S202, a first determination step, battery power demand information in the first predetermined time period is determined according to the power consumption information and the power generation information.

[0037] Specifically, the first predetermined time period can be any length of time, and in specific applications, a day is generally taken as the minimum unit, and multiples of days are taken as the predetermined time period, such as one day, one month, one year, etc. For example, in the case where the predetermined time period is one year, the determined battery power demand information is the power demand of the air conditioner in the whole year. The battery power demand information is the battery demand power of the battery.

[0038] In step S203, a second determination step, the design capacity of the energy storage battery is determined according to at least the battery power demand information.

[0039] Specifically, the design capacity is the rated capacity of the energy storage battery, which can be determined according to only the battery power demand information, such as setting the rated capacity to a value greater than or equal to the battery demand power, or the rated capacity can be determined in combination with the battery power demand information and other data.

[0040] Through the above embodiment, first, the power consumption information of the air conditioner in the first predetermined time period and the power generation information of the photovoltaic module in the first predetermined time period are acquired. Then, the battery power demand information in the first predetermined time period is determined according to the acquired power consumption information and power generation information. Finally, the design capacity of the energy storage battery is determined according to at least the determined battery power demand information. The present application comprehensively considers the power consumption information of the air conditioner and the power generation information of the photovoltaic module to determine the design capacity of the energy storage battery. The design capacity thus determined can not only meet the normal operation demand of the air conditioner under no power grid supply, but also ensure that the design capacity basically matches the battery power demand, thereby avoiding the problem of waste of capacity of the energy storage battery, thereby reducing the investment cost of the photovoltaic air conditioner system, and effectively solving the problem of large investment cost of the photovoltaic air conditioner system without power supply in the prior art.

[0041] In an exemplary embodiment, in step S201, the specific implementation of acquiring the power consumption information can be:

[0042] Step S2011: Obtain room information of a room where the air conditioner is located and meteorological information in the first predetermined period, wherein the room information includes location information of the room, purpose of the room, spatial size information of the room, and building material information of the room.

[0043] Specifically, the location information can be latitude and longitude information of the room, or city information of the room. The purpose of the room, i.e., the function of the room, can include a bedroom for sleeping, a kitchen for cooking, a living room for entertainment, and the like. The spatial size information of the room, i.e., the length, width, and height of the room, and the building material information of the room include brick-concrete material, reinforced concrete material, and steel material, etc. The meteorological information is meteorological information of the location where the air conditioner is located.

[0044] Step S2012: Obtain load information of the room in the first predetermined period by using a building energy consumption simulation engine according to the room information and the meteorological information.

[0045] Specifically, the building energy consumption simulation engine can be EnergyPlus. The load information is obtained by inputting the room information including the location information of the room, the purpose of the room, the spatial size information of the room, and the building material information of the room, and the meteorological information into EnergyPlus for simulation analysis. Of course, in addition to the EnergyPlus, a person skilled in the art can also select any other suitable building energy consumption simulation engine to determine the load information. The load information can specifically include cold load and / or heat load, and can also include energy consumption.

[0046] Step S2013: Determine power information of the air conditioner in the first predetermined period according to the load information and operation parameter information of the air conditioner.

[0047] Specifically, the power information corresponding to the load information and the operation parameter information can be obtained by comparing the obtained load information and the operation parameter information of the air conditioner with the ISO16358 standard. The operation parameter information of the air conditioner can specifically include performance parameters such as rated refrigerating capacity of the air conditioner.

[0048] Step S2014: Determine the power consumption of the air conditioner in the first predetermined period according to the power information, and obtain the power consumption information.

[0049] Specifically, the power consumption information of the air conditioner in the first predetermined period is obtained by multiplying the power information by the first predetermined period.

[0050] In the above embodiment, the load information of the room is simulated according to the room information and the meteorological information of the air conditioner, and the power information of the air conditioner is obtained according to the load information and the operation parameter information, and then the power consumption is obtained, so that the power consumption of the air conditioner in the first predetermined period can be predicted more accurately and reasonably, and more accurate reference data for determining the design capacity of the energy storage battery is provided.

[0051] In order to more accurately and quickly determine the power generation of the photovoltaic module, and further facilitate the determination of the reasonable capacity of the energy storage battery according to the power generation information and the power consumption information, thereby further avoiding the problem of waste of capacity of the energy storage battery in the photovoltaic air conditioner system, in an optional solution, the power generation information is obtained by using a photovoltaic system design auxiliary software to simulate the power generation of the photovoltaic module in the first predetermined period to obtain the power generation information.

[0052] Specifically, a person skilled in the art can select any suitable photovoltaic system design auxiliary software to simulate and predict the power generation of the photovoltaic module. In this application, the photovoltaic system design auxiliary software PVsyst is used to simulate the power generation of the photovoltaic module in the first predetermined period to obtain the power generation information.

[0053] According to some optional solutions of the present application, the power consumption information includes the power consumption at each time in the first predetermined period, and the power generation information includes the power generation at each time, and the first determination step of determining the battery power demand information in the first predetermined period according to the power consumption information and the power generation information specifically includes: in the case that the power consumption at the time is greater than the power generation at the time, determining the demand power corresponding to the time as the difference between the power consumption and the power generation at the time, that is, in the case that the power consumption of the air conditioner at a certain time is greater than the power generation of the photovoltaic module at the time, the energy storage battery needs to provide part of the power to maintain the normal operation of the air conditioner; in the case that the power consumption at the time is less than or equal to the power generation at the time, that is, the power generation of the photovoltaic module is greater than the power consumption of the air conditioner, the demand power corresponding to the time is determined as a preset value; and the sum of the demand power corresponding to each time is calculated to obtain the battery power demand information. By calculating the demand power at each time in the first predetermined period only by the photovoltaic module to supply power to the air conditioner, the amount of power that the energy storage battery needs to supply at each time is obtained, so that the demand battery power of the energy storage battery in the first predetermined period can be more reasonably ensured, and the demand battery power will not be too large or too small, so that the power supply for the normal operation of the air conditioner can be further ensured, and the problem of high initial investment cost caused by the design of the battery capacity being too large can be further avoided.

[0054] Furthermore, the aforementioned preset value can be 0. When the aforementioned preset value is 0, it means that when the power generation of the photovoltaic modules can meet the power demand of the air conditioner, the energy storage battery does not provide power, and at this time it does not occupy the design capacity of the energy storage battery.

[0055] In another embodiment, such as Figure 2 As shown, the aforementioned energy storage battery 11 is also electrically connected to the aforementioned photovoltaic module 12. That is, the air conditioner, the aforementioned energy storage battery, and the aforementioned photovoltaic module are electrically connected in pairs. The aforementioned preset value can also be the difference between the aforementioned electricity consumption and the aforementioned power generation. When the power generation of the photovoltaic module can meet the electricity demand of the air conditioner, the aforementioned photovoltaic module not only supplies power to the air conditioner but also stores the excess electricity in the energy storage battery. This application, by subtracting the excess electricity supplied by the photovoltaic module from the design capacity of the energy storage battery, can further ensure that the capacity of the energy storage battery is more closely aligned with the actual needs of the air conditioner, further avoiding the problem of an excessively large energy storage battery capacity design.

[0056] In embodiments of this application, when the power generation of the photovoltaic module is greater than or equal to the power demand of the air conditioner, the air conditioner obtains power from the photovoltaic module; when the power generation of the photovoltaic module is less than the power demand, the air conditioner obtains power from both the photovoltaic module and the energy storage battery. When the power generation of the photovoltaic module is greater than or equal to the power demand, the photovoltaic module is also used to supply power to the energy storage battery.

[0057] To further simplify the process of determining the capacity of the energy storage battery for air conditioners, in another specific embodiment, the battery power demand information includes the battery power demand. The design capacity of the energy storage battery is determined based on at least the battery power demand information, including one of the following: determining the design capacity as the battery power demand, or determining the design capacity as the sum of the battery power demand and a predetermined margin.

[0058] Optionally, before the second determining step, the method further includes a looping step, sequentially looping the acquisition step and the first determining step a predetermined number of times to obtain the battery power demand information a predetermined number of times. The second determining step includes determining the largest among the multiple battery power demand information as the design capacity. Using the largest among the multiple battery power demand information as the design capacity can further ensure that the energy storage battery capacity can meet the air conditioning operation needs without grid power supply, and at the same time further ensure that the determined design capacity is more reasonable.

[0059] According to some other embodiments of this application, after the second determining step described above, the method further includes the following steps:

[0060] Step S204: determining a residual capacity of the energy storage battery after a plurality of the second predetermined time periods, in a case that the energy storage battery supplies power to the air conditioner with the design capacity in each of the second predetermined time periods;

[0061] Specifically, the energy storage battery supplies power to the air conditioner with the design capacity in each of the second predetermined time periods refers to a case that the energy storage battery with the design capacity supplies power to the air conditioner from a full state in the second predetermined time period. The second predetermined time period can be the same as or different from the first predetermined time period.

[0062] Step S205: determining a preset electric quantity according to the capacity attenuation degree of the energy storage battery and the design capacity, the preset electric quantity being a product of the capacity attenuation degree and the design capacity;

[0063] Specifically, the capacity attenuation degree is a theoretical loss parameter of the energy storage battery, such as 20%.

[0064] Step S206: determining whether the design capacity meets a design requirement according to a plurality of the residual capacities, wherein the residual capacity less than the preset electric quantity is a target capacity, and in a case that a ratio of a number of the target capacities to a total number of the residual capacities is greater than a preset proportion, it is determined that the design capacity does not meet the design requirement.

[0065] Specifically, the preset proportion can be flexibly set by a person skilled in the art according to actual conditions, such as 20%, 30%, and the like. In a case that the preset proportion is 20% and the number of the residual capacities is 10, the residual capacity less than the preset electric quantity is greater than 2, which indicates that the design capacity does not meet the design requirement.

[0066] Step S207: in a case that the design capacity does not meet the design requirement, determining a maximum value of a difference between the preset electric quantity and each of the target capacities, and determining a sum of the design capacity and the maximum value of the difference as a final capacity of the energy storage battery.

[0067] Specifically, in a case that the design capacity does not meet the design requirement, the design capacity is compensated according to the maximum value of the difference, so as to ensure that there is enough electric quantity to support normal operation of the air conditioner.

[0068] Through the above embodiment, verification of the determined design capacity is realized. In a case that a verification result does not meet a design requirement, the determined design capacity is further ensured to meet the air conditioner operation requirement by compensating the design capacity.

[0069] In order for those skilled in the art to more clearly understand the technical solutions of the present application, the implementation process of the capacity determination method of the energy storage battery of the air conditioner of the present application will be described in detail below in conjunction with specific embodiments.

[0070] The present embodiment relates to a specific capacity determination method of an energy storage battery of an air conditioner. During the day, the photovoltaic module generates electricity. When the generated electricity is greater than the hourly power consumption of the air conditioner, the air conditioner is normally operated by the photovoltaic module, and the remaining generated electricity is stored in the energy storage battery. At this time, the energy storage battery is in an input state. When the energy storage battery is full, the excess generated electricity is no longer stored. When the generated electricity is less than the hourly power consumption of the air conditioner, the air conditioner is normally operated by the cooperation of the photovoltaic module and the energy storage battery. At this time, the energy storage battery is in an output state. As shown in FIG. 1, the method comprises the following steps: Figure 4

[0071] Step S1: Collect information such as building site, meteorological conditions, room purpose, room geometric size, and building materials, and use EnergyPlus to simulate the hourly load of the building;

[0072] Step S2: In combination with the use characteristics of the building, use PVsyst to simulate the hourly power generation of the photovoltaic module;

[0073] Step S3: Calculate the hourly power of the air conditioner according to the building load and the performance test parameters of the air conditioner. Based on the above obtained data, calculate the hourly direct consumption of the photovoltaic module and the storage demand. The direct consumption of the photovoltaic module refers to the power generation of the photovoltaic module at a certain time without storage, which is directly provided for the air conditioner; the hourly storage demand refers to the power that needs to be output from the energy storage battery at a certain time because the photovoltaic power generation is insufficient to provide the operation of the air conditioner;

[0074] Step S4: When the hourly power is greater than the photovoltaic power generation, the photovoltaic power generation is used for the power consumption of the air conditioner. At this time, the direct consumption of the photovoltaic module is equal to the photovoltaic power generation, and the hourly storage demand is equal to the difference between the hourly power and the photovoltaic power generation. When the power at a certain time is less than the photovoltaic power generation, the direct consumption of the photovoltaic module is equal to the hourly power of the air conditioner. At this time, the entire consumption of the air conditioner is provided by the photovoltaic power generation, and there is no hourly storage demand;

[0075] Step S5: Let the sum of the hourly storage demand throughout the day be the minimum storage capacity of the air conditioner that meets the off-grid air conditioner on the day, solve the minimum storage capacity of the air conditioner on each day throughout the year, and the maximum value in the minimum storage capacity of the air conditioner on each day throughout the year is the minimum design storage capacity throughout the year. According to the minimum design storage capacity, select the design capacity of the energy storage battery that can be used;

[0076] ​Step S6: To verify whether the use state of the energy storage battery meets the design requirement of no commercial power, the hourly residual capacity of the energy storage battery is predicted. If the ratio of the number of residual capacities less than the preset capacity to the total number of residual capacities in a year is greater than a predetermined proportion, it is determined that the use state of the energy storage battery does not meet the design requirement of no commercial power. At this time, the design capacity is compensated to obtain the final capacity, wherein the preset capacity is the product of the loss of the energy storage battery and the design capacity.

[0077] It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown.

[0078] The energy storage battery capacity determination device of the air conditioner provided in the embodiments of the present application can be used to execute the energy storage battery capacity determination method for the air conditioner provided in the embodiments of the present application. Figure 2 As shown in the above, the air conditioner 10 is not connected to the commercial power grid, the air conditioner 10 is respectively connected to the energy storage battery 11 and the photovoltaic module 12, and the air conditioner 10 is provided with electric energy by the energy storage battery 11 and the photovoltaic module 12. It should be noted that the energy storage battery capacity determination device of the air conditioner provided in the embodiments of the present application can be used to execute the energy storage battery capacity determination method for the air conditioner provided in the embodiments of the present application. The device is used to realize the above embodiments and preferred embodiments, and those which have been described will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that realizes a predetermined function. Although the device described in the following embodiments is preferably realized in software, the realization of hardware, or a combination of software and hardware, is also possible and is conceived.

[0079] The energy storage battery capacity determination device of the air conditioner provided in the embodiments of the present application will be described below.

[0080] Figure 5 is a schematic diagram of the energy storage battery capacity determination device of the air conditioner according to the embodiments of the present application. As shown in the above, Figure 5 The device comprises:

[0081] The acquisition unit 20 is configured to acquire the power consumption information and the power generation information. The power consumption information represents the power consumption of the air conditioner in a first predetermined time period, and the power generation information represents the power generation of the photovoltaic module in the first predetermined time period.

[0082] Specifically, the power consumption can include power consumption data information such as power consumption and power consumption power; and the power generation can also include photovoltaic yield data such as power generation and output power.

[0083] The first determining unit 21 is configured to determine, in a first determining step, battery power demand information in the first predetermined period according to the power consumption information and the power generation information.

[0084] Specifically, the first predetermined period can be of any length, and in specific applications, a day is generally taken as the minimum unit, and multiples of days are taken as the predetermined period, such as one day, one month, one year, etc. For example, in the case where the predetermined period is one year, the determined battery power demand information of the air conditioner in the year is determined. The battery power demand information is the battery demand power of the battery.

[0085] The second determining unit 22 is configured to determine, in a second determining step, the design capacity of the energy storage battery according to at least the battery power demand information.

[0086] Specifically, the design capacity is the rated capacity of the energy storage battery, which can be determined according to the battery power demand information, such as setting the rated capacity to a value greater than or equal to the battery demand power, or can be determined in combination with the battery power demand information and other data.

[0087] According to the above embodiment, the power consumption information of the air conditioner in the first predetermined period and the power generation information of the photovoltaic module in the first predetermined period are obtained by the obtaining unit. The first determining unit determines the battery power demand information in the first predetermined period according to the obtained power consumption information and power generation information. The second determining unit determines the design capacity of the energy storage battery according to at least the determined battery power demand information. The present application comprehensively considers the power consumption information of the air conditioner and the power generation information of the photovoltaic module to determine the design capacity of the energy storage battery. The determined design capacity can meet the normal operation demand of the air conditioner under the condition of no power grid supply, and can also ensure that the design capacity basically matches the battery power demand, thereby avoiding the problem of waste of the capacity of the energy storage battery, thereby reducing the investment cost of the photovoltaic air conditioner system, and effectively solving the problem of large investment cost of the photovoltaic air conditioner system without city power supply in the prior art.

[0088] In an exemplary embodiment, the obtaining unit comprises:

[0089] The obtaining module is configured to obtain room information of a room where the air conditioner is located and meteorological information in the first predetermined period, wherein the room information comprises position information of the room, purpose of the room, space size information of the room, and building material information of the room.

[0090] Specifically, the position information can be longitude and latitude information of the room, or city information of the room. The function of the room can include a bedroom for sleeping, a kitchen for cooking, a living room for entertainment, and the like. The size information of the room can include length, width, and height of the room. The building material information of the room can include brick-concrete material, reinforced concrete material, and steel material, and the like. The weather information is weather information of a location where the air conditioner is located.

[0091] The obtaining module is configured to obtain, according to the room information and the weather information, load information of the room in the first predetermined period of time by using a building energy consumption simulation engine.

[0092] Specifically, the building energy consumption simulation engine can be EnergyPlus. The load information can be obtained by inputting the room information including the position information of the room, the function of the room, the size information of the room, and the building material information of the room, and the weather information into the EnergyPlus for simulation analysis. Of course, in addition to the EnergyPlus, a person skilled in the art can also select any other suitable building energy consumption simulation engine to determine the load information. The load information can include cooling load and / or heating load, and can also include energy consumption.

[0093] The first determining module is configured to determine, according to the load information and operation parameter information of the air conditioner, power information of the air conditioner in the first predetermined period of time.

[0094] Specifically, the power information corresponding to the load information and the operation parameter information can be obtained by comparing the obtained load information and the operation parameter information with the ISO16358 standard. The operation parameter information of the air conditioner can include performance parameters such as rated cooling capacity of the air conditioner.

[0095] The second determining module is configured to determine, according to the power information, an electricity consumption of the air conditioner in the first predetermined period of time, and obtain the electricity consumption information.

[0096] Specifically, the electricity consumption information of the air conditioner in the first predetermined period of time can be obtained by multiplying the power information by the first predetermined period of time.

[0097] In the above embodiment, the load information of the room is obtained according to the room information and the weather information of the air conditioner, the power information of the air conditioner is obtained according to the load information and the operation parameter information, and the electricity consumption is obtained, so that the electricity consumption information of the air conditioner in the first predetermined period of time can be predicted more accurately and reasonably, and more accurate reference data can be provided for subsequent determination of the design capacity of the energy storage battery.

[0098] In order to accurately and quickly determine the power generation of the photovoltaic module, and further facilitate the determination of a reasonable capacity of the energy storage battery according to the power generation information and the power consumption information, thereby further avoiding the problem of waste of the capacity of the energy storage battery in the photovoltaic air conditioner system, in an optional solution, the obtaining unit comprises: an analog module configured to simulate the power generation of the photovoltaic module in the first predetermined period of time by using photovoltaic system design auxiliary software, to obtain the power generation information.

[0099] Specifically, the skilled person in the art can select any suitable photovoltaic system design auxiliary software to simulate and predict the power generation of the photovoltaic module. In this application, the photovoltaic system design auxiliary software PVsyst is used to simulate the power generation of the photovoltaic module in the first predetermined period of time, to obtain the power generation information.

[0100] According to some optional solutions of the present application, the power consumption information comprises the power consumption at each time point in the first predetermined period of time, the power generation information comprises the power generation at each time point, and the first determination unit specifically comprises: a third determination module configured to determine the required power at the time point as the difference between the power consumption and the power generation at the time point, if the power consumption at the time point is greater than the power generation at the time point, that is, if the power consumption of the air conditioner at a certain time point is greater than the power generation of the photovoltaic module at the time point, the energy storage battery needs to provide part of the power to maintain the normal operation of the air conditioner; a fourth determination module configured to determine the required power at the time point as a preset value, if the power consumption at the time point is less than or equal to the power generation at the time point, that is, if the power generation of the photovoltaic module is greater than the power consumption of the air conditioner; and a calculation module configured to calculate the sum of the required power at each time point, to obtain the battery power requirement information. By calculating the required power at each time point in the first predetermined period of time only by the photovoltaic module to supply power to the air conditioner, the amount of power that the energy storage battery needs to supply at each time point is obtained, which can further ensure that the required battery power of the energy storage battery in the first predetermined period of time is reasonable, and will not be too large or too small, thereby further ensuring the supply of power for the normal operation of the air conditioner, and further avoiding the problem of high initial investment cost caused by the overdesign of the capacity of the battery.

[0101] Further, the preset value can be 0. In the case where the preset value is 0, it means that the energy storage battery does not provide power at the time point when the power generation of the photovoltaic module can meet the power consumption demand of the air conditioner, and the design capacity of the energy storage battery is not occupied at this time point.

[0102] In another embodiment, as Figure 2As shown, the energy storage battery 11 and the photovoltaic module 12 are also electrically connected, that is, the air conditioner, the energy storage battery and the photovoltaic module are electrically connected in pairs, and the preset value can also be the difference between the power consumption and the power generation. At the moment when the power generation of the photovoltaic module can meet the power consumption demand of the air conditioner, the photovoltaic module not only supplies power to the air conditioner, but also stores the excess power in the energy storage battery. By subtracting the replenishment of the excess power of the photovoltaic module from the designed capacity of the energy storage battery, the capacity of the energy storage battery can be further ensured to be more suitable for the actual demand of the air conditioner, and the problem of the capacity of the energy storage battery being designed to be relatively large can be further avoided.

[0103] In the embodiments of the present application, in the case where the power generation of the photovoltaic module is greater than or equal to the power consumption demand of the air conditioner, the air conditioner obtains power from the photovoltaic module; in the case where the power generation of the photovoltaic module is less than the power consumption demand, the air conditioner obtains power from the photovoltaic module and the energy storage battery. In the case where the power generation of the photovoltaic module is greater than or equal to the power consumption demand, the photovoltaic module is also used to supply power to the energy storage battery.

[0104] In order to further simplify the capacity determination process of the energy storage battery of the air conditioner, in another specific embodiment, the battery power demand information includes battery demand power, and the second determination unit includes one of the following: a fifth determination module for determining that the designed capacity is the battery demand power; and a sixth determination module for determining that the designed capacity is the sum of the battery demand power and a predetermined margin.

[0105] Optionally, the device further includes a circulation unit for, before the second determination step, a circulation step of sequentially circulating the obtaining step and the first determination step for a predetermined number of times to obtain a predetermined number of battery power demand information, and the second determination unit includes a seventh determination module for determining that the maximum of the plurality of battery power demand information is the designed capacity. Taking the maximum of the plurality of battery power demand information as the designed capacity can further ensure that the capacity of the energy storage battery can meet the operation demand of the air conditioner without the supply of the power grid, and further ensure that the determined designed capacity is reasonable.

[0106] According to some other embodiments of the present application, the device further includes:

[0107] a third determination unit for, after the second determination step, determining the remaining capacity of the energy storage battery after a plurality of second predetermined time periods in the case where the energy storage battery supplies power to the air conditioner with the designed capacity at each second predetermined time period;

[0108] Specifically, the above-mentioned energy storage battery starts to supply power to the above-mentioned air conditioner at the above-mentioned design capacity per second predetermined period, which refers to the case that the above-mentioned energy storage battery with the design capacity supplies power to the air conditioner from a full charge state within the second predetermined period. The above-mentioned second predetermined period can be the same as or different from the above-mentioned first predetermined period.

[0109] The fourth determining unit is configured to determine a preset power according to the capacity attenuation degree of the energy storage battery and the design capacity, wherein the preset power is the product of the capacity attenuation degree and the design capacity.

[0110] Specifically, the capacity attenuation degree is a theoretical loss parameter of the energy storage battery, such as 20%.

[0111] The fifth determining unit is configured to determine whether the design capacity meets the design requirement according to the plurality of residual capacities, wherein the residual capacity less than the preset power is a target capacity, and it is determined that the design capacity does not meet the design requirement when the ratio of the number of the target capacities to the total number of the residual capacities is greater than a preset proportion.

[0112] Specifically, the preset proportion can be flexibly set by the person skilled in the art according to the actual situation, such as 20%, 30%, etc. When the preset proportion is 20% and the number of the residual capacities is 10, the residual capacities less than the preset power are greater than 2, which indicates that the design capacity does not meet the design requirement.

[0113] The sixth determining unit is configured to determine the maximum value of the difference between the preset power and each target capacity and determine that the sum of the design capacity and the maximum value of the difference is the final capacity of the energy storage battery when the design capacity does not meet the design requirement.

[0114] Specifically, the design capacity is compensated according to the maximum value of the difference when the design capacity does not meet the design requirement, so as to ensure that there is enough power to support the normal operation of the air conditioner.

[0115] Through the above-mentioned embodiment, the verification of the determined design capacity is realized. When the verification result does not meet the design requirement, the design capacity is compensated, so as to further ensure that the determined design capacity meets the operation requirement of the air conditioner.

[0116] The capacity determination device of the energy storage battery of the above-mentioned air conditioner comprises a processor and a memory. The above-mentioned acquisition unit, the first determining unit, the second determining unit, etc. are stored in the memory as program units, and the corresponding functions are realized by the processor executing the above-mentioned program units stored in the memory. The above-mentioned modules are located in the same processor; or, the above-mentioned modules are located in different processors in any combination.

[0117] The processor comprises a core, and the core retrieves corresponding program units in the memory.

[0118] The memory can comprise a non-permanent memory in a computer readable medium, random access memory (RAM) and / or non-volatile memory such as read-only memory (ROM) or flash memory (flash RAM), and the memory comprises at least one memory chip.

[0119] The embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium comprises a stored program, wherein the program controls a device where the computer readable storage medium is located to execute the capacity determination method of the energy storage battery of the air conditioner when the program runs.

[0120] Specifically, the capacity determination method of the energy storage battery of the air conditioner comprises:

[0121] In step S201, electric energy information and power generation information are acquired, the electric energy information represents electric energy consumption of the air conditioner in a first predetermined time period, and the power generation information represents power generation of the photovoltaic module in the first predetermined time period.

[0122] Specifically, the electric energy consumption can comprise electric energy data information such as electric energy consumption and electric power, and the power generation can comprise photovoltaic power generation data such as power generation and output power.

[0123] In step S202, first determination is performed according to the electric energy information and the power generation information to determine battery power demand information in the first predetermined time period.

[0124] Specifically, the first predetermined time period can be any length, and in specific applications, a day is generally taken as a minimum unit, and a multiple of the day is taken as the predetermined time period, such as one day, one month, one year, etc. For example, in the case where the predetermined time period is one year, the battery power demand information of the air conditioner in the whole year is determined, and the battery power demand information is battery demand power.

[0125] In step S203, second determination is performed according to at least the battery power demand information to determine a design capacity of the energy storage battery.

[0126] Specifically, the design capacity is a rated capacity of the energy storage battery, and the rated capacity can be determined according to only the battery power demand information, for example, the rated capacity is set to a value greater than or equal to the battery demand power, or the rated capacity is determined in combination with the battery power demand information and other data.

[0127] Optionally, the obtaining the power consumption information comprises: obtaining room information of a room where the air conditioner is located and meteorological information in the first predetermined period, wherein the room information comprises location information of the room, purpose of the room, spatial dimension information of the room, and building material information of the room; simulating, by using a building energy consumption simulation engine, load information of the room in the first predetermined period according to the room information and the meteorological information; determining power information of the air conditioner in the first predetermined period according to the load information and operation parameter information of the air conditioner; and determining power consumption of the air conditioner in the first predetermined period according to the power information, to obtain the power consumption information.

[0128] Optionally, the obtaining the power generation information comprises: simulating, by using a photovoltaic system design auxiliary software, power generation of the photovoltaic component in the first predetermined period, to obtain the power generation information.

[0129] Optionally, the power consumption information comprises power consumption at each time point in the first predetermined period, the power generation information comprises power generation at each time point, the first determining step comprises: in a case where the power consumption at the time point is greater than the power generation at the time point, determining demand power corresponding to the time point as a difference between the power consumption and the power generation at the time point; in a case where the power consumption at the time point is less than or equal to the power generation at the time point, determining the demand power corresponding to the time point as a preset value; and calculating a sum of the demand power corresponding to each time point, to obtain the battery power demand information.

[0130] Optionally, the preset value is 0 or a difference between the power consumption and the power generation.

[0131] Optionally, before the second determining step, the method further comprises: a loop step of sequentially looping the obtaining step and the first determining step for a predetermined number of times, to obtain a predetermined number of pieces of the battery power demand information, and the second determining step comprises: determining a maximum of the plurality of pieces of the battery power demand information as the design capacity.

[0132] Optionally, after the second determining step, the method further comprises: determining, in a case that the energy storage battery supplies power to the air conditioner starting from the design capacity at each second predetermined period, residual capacities of the energy storage battery after a plurality of the second predetermined periods; determining a preset electric quantity according to the capacity attenuation degree of the energy storage battery and the design capacity, the preset electric quantity being a product of the capacity attenuation degree and the design capacity; determining whether the design capacity meets a design requirement according to the plurality of residual capacities, wherein the residual capacity less than the preset electric quantity is a target capacity, and in a case that a ratio of a quantity of the target capacities to a total quantity of the residual capacities is greater than a preset proportion, it is determined that the design capacity does not meet the design requirement; in a case that the design capacity does not meet the design requirement, determining a maximum value of differences between the preset electric quantity and each of the target capacities, and determining a sum of the design capacity and the maximum value of the differences as a final capacity of the energy storage battery.

[0133] The embodiment of the present application provides a processor for running a program, wherein the processor is used for executing the capacity determination method of the energy storage battery of the air conditioner.

[0134] Specifically, the capacity determination method of the energy storage battery of the air conditioner comprises:

[0135] Step S201, an acquisition step, acquiring power consumption information and power generation information, wherein the power consumption information represents power consumption of the air conditioner in a first predetermined period, and the power generation information represents power generation of the photovoltaic module in the first predetermined period;

[0136] Specifically, the power consumption information can comprise power consumption quantity, power consumption power and the like; and the power generation information can comprise power generation quantity, output power and the like.

[0137] Step S202, a first determining step, determining battery electric quantity requirement information in the first predetermined period according to the power consumption information and the power generation information;

[0138] Specifically, the first predetermined period can be any length of time, and in specific application, a day is generally taken as a minimum unit, and a multiple of the day is taken as the predetermined period, such as one day, one month, one year and the like; for example, in a case that the predetermined period is one year, the battery electric quantity requirement information of the air conditioner in the year is determined; and the battery electric quantity requirement information is battery requirement electric quantity of the battery.

[0139] Step S203, a second determining step, determining a design capacity of the energy storage battery according to at least the battery electric quantity requirement information.

[0140] In particular, the design capacity is the rated capacity of the energy storage battery, which can be determined according to the battery power demand information, for example, the rated capacity is set to be greater than or equal to the battery power demand, and the rated capacity can also be determined in combination with the battery power demand information and other data.

[0141] Optionally, the power consumption information is obtained by: obtaining room information of a room where the air conditioner is located and meteorological information in the first predetermined period, wherein the room information includes location information of the room, purpose of the room, space size information of the room, and building material information of the room; simulating, by using a building energy consumption simulation engine, load information of the room in the first predetermined period according to the room information and the meteorological information; determining power information of the air conditioner in the first predetermined period according to the load information and the operation parameter information of the air conditioner; and determining power consumption of the air conditioner in the first predetermined period according to the power information, to obtain the power consumption information.

[0142] Optionally, the power generation information is obtained by: simulating, by using a photovoltaic system design auxiliary software, power generation of the photovoltaic component in the first predetermined period, to obtain the power generation information.

[0143] Optionally, the power consumption information includes power consumption at each time point in the first predetermined period, the power generation information includes power generation at each time point, and the first determining step includes: in a case where the power consumption at the time point is greater than the power generation, determining the demand power corresponding to the time point as a difference between the power consumption and the power generation; in a case where the power consumption at the time point is less than or equal to the power generation, determining the demand power corresponding to the time point as a preset value; and calculating a sum of the demand power corresponding to each time point, to obtain the battery power demand information.

[0144] Optionally, the preset value is 0 or the difference between the power consumption and the power generation.

[0145] Optionally, before the second determining step, the method further includes: a loop step of sequentially looping the obtaining step and the first determining step for a predetermined number of times, to obtain a predetermined number of battery power demand information, and the second determining step includes: determining a maximum of the plurality of battery power demand information as the design capacity.

[0146] Optionally, after the second determining step, the method further comprises: determining a residual capacity of the energy storage battery after a plurality of the second predetermined time periods, in a case that the energy storage battery supplies power to the air conditioner starting from the design capacity in each of the second predetermined time periods; determining a preset power according to the capacity attenuation degree of the energy storage battery and the design capacity, the preset power being a product of the capacity attenuation degree and the design capacity; determining whether the design capacity meets a design requirement according to the plurality of residual capacities, wherein the residual capacity less than the preset power is a target capacity, and in a case that a ratio of a number of the target capacities to a total number of the residual capacities is greater than a preset ratio, it is determined that the design capacity does not meet the design requirement; in a case that the design capacity does not meet the design requirement, determining a maximum value of a difference between the preset power and each of the target capacities, and determining a sum of the design capacity and the maximum value of the difference as a final capacity of the energy storage battery.

[0147] An apparatus is provided, and the apparatus includes a processor, a memory, and a program stored on the memory and executable on the processor, and the processor implements at least the following steps when executing the program:

[0148] In step S201, power consumption information and power generation information are obtained, the power consumption information representing power consumption of the air conditioner in a first predetermined time period, and the power generation information representing power generation of the photovoltaic module in the first predetermined time period.

[0149] In step S202, a first determining step, battery power demand information in the first predetermined time period is determined according to the power consumption information and the power generation information.

[0150] In step S203, a second determining step, a design capacity of the energy storage battery is determined according to at least the battery power demand information.

[0151] The apparatus herein can be a server, a PC, a PAD, a mobile phone, etc.

[0152] Optionally, the power consumption information is obtained by: obtaining room information of a room in which the air conditioner is located and meteorological information in the first predetermined time period, wherein the room information includes location information of the room, a purpose of the room, spatial size information of the room, and building material information of the room; obtaining load information of the room in the first predetermined time period by using a building energy consumption simulation engine according to the room information and the meteorological information; determining power information of the air conditioner in the first predetermined time period according to the load information and operation parameter information of the air conditioner; and determining an electricity consumption of the air conditioner in the first predetermined time period according to the power information, to obtain the power consumption information.

[0153] Optionally, the obtaining the power generation information comprises: simulating power generation of the photovoltaic module in the first predetermined period of time by using photovoltaic system design auxiliary software to obtain the power generation information.

[0154] Optionally, the power consumption information comprises power consumption at each time point in the first predetermined period of time, the power generation information comprises power generation at each time point, the first determining step comprises: in the case that the power consumption at the time point is greater than the power generation at the time point, determining the demand power corresponding to the time point as a difference between the power consumption and the power generation; in the case that the power consumption at the time point is less than or equal to the power generation at the time point, determining the demand power corresponding to the time point as a preset value; and calculating a sum of the demand power corresponding to each time point to obtain the battery power demand information.

[0155] Optionally, the preset value is 0 or a difference between the power consumption and the power generation.

[0156] Optionally, before the second determining step, the method further comprises: a loop step of sequentially looping the obtaining step and the first determining step for a predetermined number of times to obtain a predetermined number of battery power demand information, and the second determining step comprises: determining a maximum of the plurality of battery power demand information as the design capacity.

[0157] Optionally, after the second determining step, the method further comprises: determining a residual capacity of the energy storage battery after a plurality of second predetermined periods of time, in the case that the energy storage battery supplies power to the air conditioner with the design capacity in each second predetermined period of time; determining a preset power according to a capacity attenuation degree of the energy storage battery and the design capacity, the preset power being a product of the capacity attenuation degree and the design capacity; and determining whether the design capacity meets a design requirement according to the plurality of residual capacities, wherein a residual capacity less than the preset power is a target capacity, and in the case that a ratio of a number of the target capacities to a total number of the residual capacities is greater than a preset ratio, it is determined that the design capacity does not meet the design requirement; in the case that the design capacity does not meet the design requirement, determining a maximum of a difference between the preset power and each target capacity, and determining a sum of the design capacity and the maximum difference as a final capacity of the energy storage battery.

[0158] The application also provides a computer program product adapted to execute a program comprising at least the following steps when executed on a data processing device:

[0159] Step S201, an obtaining step of obtaining power consumption information and power generation information, the power consumption information representing power consumption of the air conditioner in a first predetermined period of time, and the power generation information representing power generation of the photovoltaic module in the first predetermined period of time;

[0160] Step S202, a first determining step, determining battery power demand information in the first predetermined period according to the power consumption information and the power generation information;

[0161] Step S203, a second determining step, determining the design capacity of the energy storage battery according to at least the battery power demand information.

[0162] Optionally, the power consumption information is obtained by: obtaining room information of a room where the air conditioner is located and meteorological information in the first predetermined period, wherein the room information comprises location information of the room, purpose of the room, spatial size information of the room, and building material information of the room; simulating, using a building energy consumption simulation engine, load information of the room in the first predetermined period according to the room information and the meteorological information; determining power information of the air conditioner in the first predetermined period according to the load information and operation parameter information of the air conditioner; and determining power consumption of the air conditioner in the first predetermined period according to the power information, to obtain the power consumption information.

[0163] Optionally, the power generation information is obtained by: simulating, using photovoltaic system design auxiliary software, power generation of the photovoltaic component in the first predetermined period, to obtain the power generation information.

[0164] Optionally, the power consumption information comprises power consumption at each time point in the first predetermined period, the power generation information comprises power generation at each time point, the first determining step comprises: in a case where the power consumption at the time point is greater than the power generation at the time point, determining demand power corresponding to the time point as a difference between the power consumption and the power generation at the time point; in a case where the power consumption at the time point is less than or equal to the power generation at the time point, determining the demand power corresponding to the time point as a preset value; and calculating a sum of the demand power corresponding to each time point, to obtain the battery power demand information.

[0165] Optionally, the preset value is 0 or a difference between the power consumption and the power generation.

[0166] Optionally, before the second determining step, the method further comprises: a loop step of sequentially looping the obtaining step and the first determining step for a predetermined number of times, to obtain a predetermined number of battery power demand information; and the second determining step comprises: determining a maximum of the plurality of battery power demand information as the design capacity.

[0167] Optionally, after the second determining step, the method further comprises: determining a residual capacity of the energy storage battery after a plurality of the second predetermined time periods, in a case that the energy storage battery supplies power to the air conditioner at the design capacity for each of the second predetermined time periods; determining a preset electric quantity according to the capacity attenuation degree of the energy storage battery and the design capacity, the preset electric quantity being a product of the capacity attenuation degree and the design capacity; determining whether the design capacity meets a design requirement according to the plurality of residual capacities, wherein the residual capacity less than the preset electric quantity is a target capacity, and in a case that a ratio of a number of the target capacities to a total number of the residual capacities is greater than a preset ratio, it is determined that the design capacity does not meet the design requirement; in a case that the design capacity does not meet the design requirement, determining a maximum value of a difference between the preset electric quantity and each of the target capacities, and determining a sum of the design capacity and the maximum value of the difference as a final capacity of the energy storage battery.

[0168] According to still another aspect of the present application, there is also provided a photovoltaic air conditioning system, comprising: an energy storage battery, a design capacity of the energy storage battery being determined by any one of the above methods; a photovoltaic module; and an air conditioner, the air conditioner being not electrically connected to a power grid, and being electrically connected to the energy storage battery and the photovoltaic module respectively.

[0169] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be realized by general computing devices, which can be centralized on a single computing device, or distributed on a network composed of multiple computing devices, and can be realized by program codes executable by computing devices, so that they can be stored in storage devices and executed by computing devices, and in some cases, the steps shown or described can be executed in different orders, or they can be manufactured into individual integrated circuit modules, or multiple modules or steps can be manufactured into a single integrated circuit module. Therefore, the present application is not limited to any specific combination of hardware and software.

[0170] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can be in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can be in the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0171] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks in the flowcharts and / or combination thereof. Figure 1 one or more flowcharts and / or blocks in the flowcharts and / or combination thereof.

[0172] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks in the flowcharts and / or combination thereof. Figure 1 one or more flowcharts and / or blocks in the flowcharts and / or combination thereof.

[0173] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks in the flowcharts and / or combination thereof. Figure 1 one or more flowcharts and / or blocks in the flowcharts and / or combination thereof.

[0174] In one typical configuration, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0175] The memory can include non-persistent memory and / or volatile memory, such as a random access memory (RAM) including a cache area for the temporary storage of data. The memory can also include non-volatile memory, such as read only memory (ROM) for storing structural information and / or instruction code to implement the functions of the computing device. The memory can additionally or alternatively include mass storage for persistent storage of information and instructions.

[0176] Computer-readable media includes permanent and non-permanent, movable and non-movable media that can implement information storage by any method or technology. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible to a computing device. According to the definition herein, computer-readable media does not include transitory media such as modulated data signals and carriers.

[0177] It should also be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

[0178] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of determining a capacity of an energy storage battery of an air conditioner, characterized by, The air conditioner is not connected with the power grid, the air conditioner is respectively connected with the energy storage battery and the photovoltaic component, and the method comprises: An acquisition step is provided for acquiring power consumption information and power generation information, wherein the power consumption information represents power consumption of the air conditioner in a first predetermined time period, and the power generation information represents power generation of the photovoltaic component in the first predetermined time period; A first determination step is provided for determining battery power demand information in the first predetermined time period according to the power consumption information and the power generation information; A second determination step is provided for determining a design capacity of the energy storage battery according to at least the battery power demand information, After the second determination step, the method further comprises: determining remaining capacities of the energy storage battery after a plurality of second predetermined time periods, wherein the energy storage battery is powered by the design capacity in each second predetermined time period; determining a preset power according to a capacity attenuation degree of the energy storage battery and the design capacity, wherein the preset power is a product of the capacity attenuation degree and the design capacity; determining whether the design capacity meets a design requirement according to a plurality of the remaining capacities, wherein a target capacity is less than the preset power, and the design capacity is determined not to meet the design requirement when a ratio of a number of the target capacities to a total number of the remaining capacities is greater than a preset ratio; in a case where the design capacity does not meet the design requirement, determining a maximum value of differences between the preset power and each of the target capacities, and determining a sum of the design capacity and the maximum value as a final capacity of the energy storage battery.

2. The method of claim 1, wherein, The power consumption information is acquired by: acquiring room information of a room in which the air conditioner is located and meteorological information in the first predetermined time period, wherein the room information comprises location information of the room, a use of the room, spatial size information of the room, and building material information of the room; using a building energy consumption simulation engine to simulate load information of the room in the first predetermined time period according to the room information and the meteorological information; determining power information of the air conditioner in the first predetermined time period according to the load information and operation parameter information of the air conditioner; determining power consumption of the air conditioner in the first predetermined time period according to the power information, and obtaining the power consumption information.

3. The method of claim 1, wherein, The power generation information is acquired by: using photovoltaic system design auxiliary software to simulate power generation of the photovoltaic component in the first predetermined time period, and obtaining the power generation information.

4. The method of claim 1, wherein, The power consumption information comprises power consumption at each time point in the first predetermined time period, the power generation information comprises power generation at each time point, and the first determination step comprises: in a case where the power consumption at the time point is greater than the power generation, determining a demand power corresponding to the time point as a difference between the power consumption and the power generation; in a case where the power consumption at the time point is less than or equal to the power generation, determining the demand power corresponding to the time point as a preset value; calculating a sum of the demand power corresponding to each time point, and obtaining the battery power demand information.

5. The method of claim 4, wherein, The preset value is 0 or a difference between the power consumption and the power generation.

6. The method of any one of claims 1-5, wherein, before the second determining step, the method further comprises a cycling step of sequentially cycling the obtaining step and the first determining step for a predetermined number of times to obtain a predetermined number of the battery power demand information, the second determining step comprises determining a maximum of the plurality of the battery power demand information as the design capacity.

7. A device for determining the capacity of an air conditioner's energy storage battery, characterized in that, The air conditioner is not electrically connected to the power grid, and the air conditioner is electrically connected to the energy storage battery and the photovoltaic module, respectively, and the device comprises: an obtaining unit for obtaining the power consumption information and the power generation information, the power consumption information representing the power consumption of the air conditioner in a first predetermined period, and the power generation information representing the power generation of the photovoltaic module in the first predetermined period; a first determining unit for determining the battery power demand information in the first predetermined period according to the power consumption information and the power generation information; a second determining unit for determining the design capacity of the energy storage battery according to at least the battery power demand information, the device further comprises a third determining unit for determining the remaining capacity of the energy storage battery after a plurality of second predetermined periods under the condition that the energy storage battery supplies power to the air conditioner with the design capacity in each second predetermined period after the second determining step; a fourth determining unit for determining a preset power according to the capacity attenuation degree of the energy storage battery and the design capacity, the preset power being the product of the capacity attenuation degree and the design capacity; a fifth determining unit for determining whether the design capacity meets the design requirement according to a plurality of the remaining capacities, wherein the remaining capacity less than the preset power is a target capacity, and the design capacity is determined not to meet the design requirement in the case that the ratio of the number of the target capacity to the total number of the remaining capacities is greater than a preset proportion; a sixth determining unit for determining the maximum value of the difference between the preset power and each target capacity and determining the sum of the design capacity and the maximum value of the difference as the final capacity of the energy storage battery in the case that the design capacity does not meet the design requirement.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium comprises a stored program, wherein the program controls the device where the computer-readable storage medium is located to execute the method of any one of claims 1-6 when the program is running.

9. A photovoltaic air conditioning system, characterized by, comprises: an energy storage battery, the design capacity of the energy storage battery being determined by the method of any one of claims 1-6; a photovoltaic module; an air conditioner, the air conditioner being not electrically connected to the power grid and being electrically connected to the energy storage battery and the photovoltaic module, respectively.

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