阅读说明：本技术 一种家庭储能系统及方法 (Household energy storage system and method ) 是由 邓勇明 陈雄伟 于 2021-10-11 设计创作，主要内容包括：本申请公开了一种家庭储能系统及方法,其中,所述系统包括：光伏发电模块,用于将太阳能转化为电能；储能模块,与光伏发电模块连接,用于获取光伏发电模块的电能并存储；所述储能模块与多个家居电器连接,能通过储能模块对多个家居电器进行供电；所述系统还包括供电控制模块,所述供电控制模块与光伏发电模块以及储能模块连接,用于基于光伏发电模块的发电效率,控制储能模块放电的开启或关闭；通过本申请的方案,能够实现对家居电器供电的智能化管控,提高供电效率,降低供电成本。(The application discloses energy storage system and method of family, wherein, the system includes: the photovoltaic power generation module is used for converting solar energy into electric energy; the energy storage module is connected with the photovoltaic power generation module and used for acquiring and storing the electric energy of the photovoltaic power generation module; the energy storage module is connected with the plurality of household appliances and can supply power to the plurality of household appliances through the energy storage module; the system also comprises a power supply control module, wherein the power supply control module is connected with the photovoltaic power generation module and the energy storage module and is used for controlling the on/off of the discharge of the energy storage module based on the power generation efficiency of the photovoltaic power generation module; through the scheme of this application, can realize the intelligent management and control to the house electrical apparatus power supply, improve power supply efficiency, reduce the power supply cost.)

1. A home energy storage system, comprising:

the photovoltaic power generation module is used for converting solar energy into electric energy;

the energy storage module is connected with the photovoltaic power generation module and used for acquiring and storing the electric energy of the photovoltaic power generation module;

the energy storage module is connected with the plurality of household appliances and can supply power to the plurality of household appliances through the energy storage module;

the system also comprises a power supply control module, wherein the power supply control module is connected with the photovoltaic power generation module and the energy storage module and is used for controlling the on/off of the discharge of the energy storage module based on the power generation efficiency of the photovoltaic power generation module.

2. The home energy storage system of claim 1, further comprising:

and the power consumption statistical module is connected with the plurality of household electrical appliances and used for acquiring the power consumption condition of each household electrical appliance.

3. The home energy storage system of claim 2, further comprising:

and the household electrical appliance classification module is connected with the power consumption statistics module and classifies the household electrical appliances based on the power consumption condition of each household electrical appliance.

4. The home energy storage system of claim 3, wherein said energy storage module comprises:

the fixed energy consumption energy storage unit is used for supplying power to the household electrical appliance with stable power consumption;

and the specific energy consumption energy storage unit is used for supplying power to specific household appliances.

5. The home energy storage system of claim 2, wherein the power supply control module comprises:

and the low-power-consumption power supply control unit is used for controlling the energy storage module to acquire and store the electric energy of the photovoltaic power generation module when the photovoltaic power generation module performs photoelectric conversion and the conversion efficiency is lower than a preset value, and supplying power to the low-power-consumption household electrical appliance through the energy storage module.

6. The home energy storage system of claim 5, wherein the power control module further comprises:

and the charging and power supplying synchronous control unit is used for controlling the energy storage module to acquire and store the electric energy of the photovoltaic power generation module when the conversion efficiency of the photovoltaic power generation module is higher than a preset value, and supplying power to each connected household electrical appliance through the energy storage module.

7. The home energy storage system of claim 6, wherein the power control module further comprises:

and the unidirectional power supply control unit is used for controlling the energy storage module to supply power to each household electrical appliance connected with the energy storage module when the photovoltaic power generation module stops photoelectric conversion.

8. The home energy storage system of claim 7, wherein the power control module further comprises:

and the mains supply energy storage control unit is used for charging the energy storage module and storing electric energy in the time period when the price of the mains supply is reduced.

9. The home energy storage system of claim 1, further comprising:

and the heat dissipation module is connected with the energy storage module and used for dissipating heat of the energy storage module when the electric energy of the energy storage module is sufficient.

10. A method of storing energy in a home, comprising:

acquiring the photoelectric conversion efficiency of the photovoltaic power generation module;

when the photovoltaic power generation module starts photoelectric conversion and the photoelectric conversion efficiency is lower than a preset value, the energy storage module is charged, and the energy storage module is controlled to supply power to the household electrical appliance with low energy consumption:

when the photoelectric conversion efficiency of the photovoltaic power generation module is higher than a preset value, the energy storage module is charged, and the energy storage module is controlled to supply power to all household appliances;

when the photovoltaic power generation module stops photoelectric conversion, the energy storage module is controlled to supply power to all household appliances;

when the photovoltaic power generation module stops photoelectric conversion and the electricity price of the commercial power is reduced, the energy storage module is charged through the commercial power, and all household appliances are supplied with power through the commercial power.

Technical Field

The application relates to the field of household energy storage, in particular to a household energy storage system and a household energy storage method.

Background

With the continuous development of intellectualization and informatization, the household energy storage system gradually rises and enters thousands of households. The household energy storage system can provide new energy electric power and temporary power supply for a household, has an electric power storage function, and is not influenced by urban power supply pressure in operation, but the traditional household energy storage system only has the storage function, cannot perform intelligent analysis on household electric equipment, and easily causes waste of electric power resources.

Disclosure of Invention

The application aims to realize intelligent power supply of household appliances.

The technical purpose of the application is realized by the following technical scheme: a home energy storage system, comprising:

the photovoltaic power generation module is used for converting solar energy into electric energy;

the energy storage module is connected with the photovoltaic power generation module and used for acquiring and storing the electric energy of the photovoltaic power generation module;

the energy storage module is connected with the plurality of household appliances and can supply power to the plurality of household appliances through the energy storage module;

the system also comprises a power supply control module, wherein the power supply control module is connected with the photovoltaic power generation module and the energy storage module and is used for controlling the on/off of the discharge of the energy storage module based on the power generation efficiency of the photovoltaic power generation module.

According to the scheme, solar energy is converted into electric energy through the photovoltaic power generation module, the electric energy is stored through the energy storage module, power is supplied to household appliances, the power supply and the charging of the energy storage module are controlled through the power supply control module, the charging and the discharging intelligent control of the energy storage module are achieved based on the power generation efficiency of the photovoltaic power generation module, and the power supply efficiency is improved.

Optionally, the household energy storage system, wherein the system further includes:

and the power consumption statistical module is connected with the plurality of household electrical appliances and used for acquiring the power consumption condition of each household electrical appliance.

According to the scheme, the power consumption condition of the household electrical appliances is acquired through the power consumption statistical module, power supply control of different household electrical appliances is facilitated, and intelligent power supply is achieved.

Optionally, the household energy storage system, wherein the system further includes:

and the household electrical appliance classification module is connected with the power consumption statistics module and classifies the household electrical appliances based on the power consumption condition of each household electrical appliance.

According to the scheme, the household electrical appliances are classified through the household electrical appliance classification module, so that the household electrical appliances classified in different modes are intelligently powered according to different power consumption conditions, and power supply efficiency and stability are ensured.

Optionally, the household energy storage system, wherein the energy storage module includes:

the fixed energy consumption energy storage unit is used for supplying power to the household electrical appliance with stable power consumption;

and the specific energy consumption energy storage unit is used for supplying power to specific household appliances.

According to the scheme, the intelligent power supply of the household appliances under different power consumption conditions is further realized through the fixed energy consumption energy storage unit and the specific energy consumption energy storage unit, so that the power supply is more stable, and the power supply efficiency is guaranteed.

Optionally, the household energy storage system, wherein the power supply control module includes:

and the low-power-consumption power supply control unit is used for controlling the energy storage module to acquire and store the electric energy of the photovoltaic power generation module when the photovoltaic power generation module performs photoelectric conversion and the conversion efficiency is lower than a preset value, and supplying power to the low-power-consumption household electrical appliance through the energy storage module.

According to the scheme, through the low-power-consumption power supply control unit, when the efficiency of photoelectric conversion of the photovoltaic power generation module is low, the energy storage module is controlled to charge, the household electrical appliance with low power consumption is powered, and energy is reasonably distributed.

Optionally, the household energy storage system, wherein the power supply control module further includes:

and the charging and power supplying synchronous control unit is used for controlling the energy storage module to acquire and store the electric energy of the photovoltaic power generation module when the conversion efficiency of the photovoltaic power generation module is higher than a preset value, and supplying power to each connected household electrical appliance through the energy storage module.

According to the scheme, when the conversion efficiency of the photovoltaic power generation module is higher than the preset value, the energy storage module is controlled to normally supply power to all household appliances through the charging and power supply synchronous control unit, charging is also achieved through the energy storage module, the whole electric energy of the energy storage module is increased when the power is normally supplied, normal power utilization of the household appliances can be guaranteed, meanwhile, the energy storage module is also charged, and solar energy is utilized to the maximum extent.

Optionally, the household energy storage system, wherein the power supply control module further includes:

and the unidirectional power supply control unit is used for controlling the energy storage module to supply power to each household electrical appliance connected with the energy storage module when the photovoltaic power generation module stops photoelectric conversion.

According to the scheme, the photovoltaic conversion is stopped at the photovoltaic power generation module, the energy storage module stops charging through the photovoltaic power generation module, and at the moment, the energy storage module supplies power in a single direction to supply power to household appliances.

Optionally, the household energy storage system, wherein the power supply control module further includes:

and the mains supply energy storage control unit is used for charging the energy storage module and storing electric energy in the time period when the price of the mains supply is reduced.

According to the scheme, when the commercial power price is reduced, the commercial power energy storage control unit charges the energy storage module, so that the power supply cost can be controlled while the electric energy of the energy storage module is sufficient, and intelligent power supply control is realized.

Optionally, the household energy storage system, wherein the system further includes:

and the heat dissipation module is connected with the energy storage module and used for dissipating heat of the energy storage module when the electric energy of the energy storage module is sufficient.

According to the scheme, the energy storage module is cooled when the electric energy of the energy storage module is sufficient through the cooling module, resources are reasonably utilized, meanwhile, the energy storage module is cooled, the temperature is prevented from being too high, and potential safety hazards exist.

In another aspect of the present application, a method for storing energy in a home is disclosed, which includes:

acquiring the photoelectric conversion efficiency of the photovoltaic power generation module;

when the photovoltaic power generation module starts photoelectric conversion and the photoelectric conversion efficiency is lower than a preset value, the energy storage module is charged, and the energy storage module is controlled to supply power to the household electrical appliance with low energy consumption:

when the photoelectric conversion efficiency of the photovoltaic power generation module is higher than a preset value, the energy storage module is charged, and the energy storage module is controlled to supply power to all household appliances;

when the photovoltaic power generation module stops photoelectric conversion, the energy storage module is controlled to supply power to all household appliances;

when the photovoltaic power generation module stops photoelectric conversion and the electricity price of the commercial power is reduced, the energy storage module is charged through the commercial power, and all household appliances are supplied with power through the commercial power.

According to the scheme, the energy storage module is intelligently controlled to charge and discharge based on the photoelectric conversion efficiency of the photovoltaic power generation module, so that the power supply efficiency and the power supply stability are improved.

In summary, the present application discloses a home energy storage system and method, wherein the system includes: the photovoltaic power generation module is used for converting solar energy into electric energy; the energy storage module is connected with the photovoltaic power generation module and used for acquiring and storing the electric energy of the photovoltaic power generation module; the energy storage module is connected with the plurality of household appliances and can supply power to the plurality of household appliances through the energy storage module; the system also comprises a power supply control module, wherein the power supply control module is connected with the photovoltaic power generation module and the energy storage module and is used for controlling the on/off of the discharge of the energy storage module based on the power generation efficiency of the photovoltaic power generation module; through the scheme of this application, can realize the intelligent management and control to the house electrical apparatus power supply, improve power supply efficiency, reduce the power supply cost.

Drawings

Fig. 1 is a block diagram of a home energy storage system according to the present application.

Fig. 2 is a block diagram of an energy storage module of the home energy storage system according to the present application.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

This application is to current energy storage system of family, and the power supply is unstable, can not realize intelligent power supply, improves, and this application embodiment discloses an energy storage system of family, refers to and reads figure 1, does the block diagram of structure of system, wherein, includes:

a photovoltaic power generation module 100 for converting solar energy into electric energy;

the energy storage module 200 is connected with the photovoltaic power generation module 100 and used for acquiring and storing the electric energy of the photovoltaic power generation module 100;

the energy storage module 200 is connected with a plurality of household appliances and can supply power to the household appliances through the energy storage module 200;

the system further comprises a power supply control module 300, wherein the power supply control module 300 is connected with the photovoltaic power generation module 100 and the energy storage module 200 and is used for controlling the on/off of the discharge of the energy storage module 200 based on the power generation efficiency of the photovoltaic power generation module 100.

In the embodiment of the application, the household electrical appliance is powered on, under normal conditions, the household electrical appliance is connected to the commercial power, the commercial power is normally powered on, but the commercial power is powered on, on one hand, a power failure condition occurs, on the other hand, the power consumption peak period and the power price of the commercial power are higher than those of the power consumption valley period, so that the power consumption cost of a family is improved, therefore, in the application, solar energy is converted into electric energy through the photovoltaic power generation module 100, the converted electric energy is stored through the energy storage module 200, then the household electrical appliance is powered through the energy storage module 200, in order to realize intelligent power supply, the power supply efficiency and the stability are improved, the energy storage module 200 is controlled through the power supply control module 300, specifically, the control on the energy storage module 200 is based on the photoelectric conversion efficiency of the photovoltaic power generation module 100, different photoelectric conversion efficiencies, the charging efficiency of the corresponding energy storage module 200 and the stability of power supply are different, based on different photoelectric conversion efficiencies, the energy storage module 200 is controlled, so that the power supply efficiency of household appliances is guaranteed, power can be supplied through the energy storage module 200 and the commercial power, on one hand, the power supply efficiency and stability are improved, and on the other hand, the energy consumption and the power consumption cost can be reduced.

In the foregoing solution, the system can realize intelligent power supply of the household electrical appliance, and further, in order to supply power to the household electrical appliance, in this embodiment of the application, the household energy storage system, wherein, with continuing to refer to fig. 1, the system further includes:

the power consumption statistics module 400 is connected to the plurality of home appliances, and is configured to obtain power consumption conditions of the home appliances.

In the embodiment of the application, in order to realize intelligent power supply, and the intelligent analysis domestic power consumption condition, through power consumption statistics module 400, monitor household electrical appliances, acquire the power consumption condition of each household electrical appliance, can be according to the power consumption condition of difference, reasonable control energy storage module 200 comes, for example, the refrigerator need normally open, must supply power for a long time, therefore, can fix and supply power to the refrigerator, and large-scale family such as air conditioner, then when using, just can open, therefore, in the concrete use, can carry out power consumption condition statistics to each household electrical appliance, be convenient for carry out intelligent control to household electrical appliances's power supply, guarantee power supply efficiency and power supply stability.

The aforesaid scheme has mentioned, for the convenience carries out intelligent power supply to house electrical apparatus, can statistics house electrical apparatus's power consumptive condition, and is further, for the convenience carries out centralized control to house electrical apparatus, in this application embodiment, family energy storage system, wherein, continue to refer to and show fig. 1, the system still includes:

the household electrical appliance classification module 500 is connected with the power consumption statistics module 400 and classifies the household electrical appliances based on the power consumption condition of each household electrical appliance;

in the embodiment of the application, power consumption statistics module 400 carries out power consumption condition statistics back to each house electrical apparatus, for the convenience of centralized control power supply, can classify all house electrical apparatus, for example, can classify according to the power consumption, the air conditioner, the water heater, the great one kind that is of power consumption such as electromagnetism stove, the refrigerator, power consumption such as fan is less for one kind, or, there is classification according to often using and unusual, for example, the refrigerator is normally opened, the water heater, the air conditioner is opened unusually when using, can also be other classifications, can be according to categorised, come intelligent power supply, preferably supply power or power consumption less electrical apparatus to normally open electrical apparatus.

In an embodiment of the present application, specifically, different household electrical appliances are intelligently powered, and the household energy storage system, referring to fig. 2, is a structural block diagram of the energy storage module, where the energy storage module 200 includes:

the fixed energy consumption energy storage unit 201 is used for supplying power to household appliances with stable power consumption;

and the specific energy consumption energy storage unit 202 is used for supplying power to specific household appliances.

In the embodiment of the present application, based on the power consumption condition, the household electrical appliances are intelligently powered, the energy storage module 200 includes a fixed energy storage unit 201 and a specific energy storage unit 202, where the fixed energy storage unit 201 is used to supply power to the household electrical appliances with stable power consumption condition, and the specific energy storage unit 202 is used to supply power to the specific household electrical appliances, and in specific implementation, for example, a refrigerator, an illumination lamp, a humidifier, etc., relatively speaking, the power consumption condition is stable, and the average power consumption per day is stable in an interval, so that these electrical appliances, relatively speaking, the power consumption per day is relatively stable, and therefore, for the convenience of intelligent control, these electrical appliances are powered through the fixed energy storage unit 201, that is, the energy storage module 200 is divided into two sub-modules, the two sub-modules supply power independently, and the specific energy storage unit 202, the power supply device can supply power to some specific household appliances, for example, in summer, in hot weather, the electric energy needs to be reserved for an air conditioner, or in evening, the electric energy needs to be reserved for a water heater for bathing and the like, specific household appliances can be selected according to specific application scenes, and the power supply device supplies power through the specific energy consumption energy storage unit 202, so that the intelligent control of the household appliances is guaranteed, and the power supply efficiency is further guaranteed.

The foregoing solution mentions that the power supply control module 300 controls power supply and discharge of the energy storage module 200 based on the photoelectric conversion efficiency of the photovoltaic power generation module 100, and thus, in particular, in the embodiment of the present application, the household energy storage system, wherein the power supply control module 300 includes:

and the low-power-consumption power supply control unit is used for controlling the energy storage module 200 to acquire and store the electric energy of the photovoltaic power generation module 100 when the photovoltaic power generation module 100 performs photoelectric conversion and the conversion efficiency is lower than a preset value, and supplying power to the low-power-consumption household electrical appliance through the energy storage module 200.

In the embodiment of the present application, in order to control power supply to the energy storage module 200 according to the photoelectric conversion efficiency of different photovoltaic power generation modules 100, so as to ensure the power supply efficiency, the photoelectric conversion efficiency of the photovoltaic power generation module 100 has several intervals, wherein the intervals include that the photoelectric conversion can be turned on, but the photoelectric conversion efficiency is low, that is, the photovoltaic power generation module 100 can convert solar energy into electric energy, but the converted electric energy is not enough, at this time, in order to meet the power supply requirement of the household electrical appliance, the energy storage module 200 is controlled to obtain electric energy from the photovoltaic power generation module 100 through the low power consumption power supply control unit and store the electric energy, and the household electrical appliance is supplied with power through the energy storage module 200, but at this time, because the electric energy is not enough, in order to ensure the power supply efficiency, the household electrical appliance with low power consumption is supplied with power through the energy storage module 200, and other household electrical appliances, when the user need open, can supply power through the commercial power, in the above-mentioned embodiment of this application, for example, in morning, sunshine is not very sufficient, can carry out photoelectric conversion this moment, but photoelectric conversion's electric energy can be few, consequently, this moment, photovoltaic power generation module 100 opens photoelectric conversion, supplies power to energy storage module 200, and energy storage module 200 also can supply power, but the house electrical apparatus of power supply is small-size electrical apparatus such as refrigerator, electric light, the less house electrical apparatus of power consumption.

Further, except when the efficiency of the photovoltaic power generation module 100 is low, the efficiency of the photovoltaic power generation module 100 is also high, so based on the above situation, in the embodiment of the present application, the home energy storage system further includes:

and the charging and power supplying synchronous control unit is used for controlling the energy storage module 200 to acquire and store the electric energy of the photovoltaic power generation module 100 when the conversion efficiency of the photovoltaic power generation module 100 is higher than a preset value, and supplying power to each connected household electrical appliance through the energy storage module 200.

In the embodiment of the present application, when the efficiency of the photovoltaic power generation module 100 is high, that is, at this time, the electrical energy generated by the photovoltaic power generation module 100 can not only normally charge the energy storage module 200, but also the energy storage module 200 can supply power to a large electrical appliance, at this time, in order to fully utilize resources, through the charging and power supply synchronous control unit, the energy storage module 200 is controlled, that is, the energy storage module 200 is charged, and each connected household electrical appliance can be normally supplied with power, at this time, the type of the household electrical appliance and the power consumption are not limited, the electric energy generated by the photovoltaic power generation module 100 can be normally supplied to all household electrical appliances, and the energy storage module 200 can also be charged, for example, in the morning from one tenth to four afternoon, the sunlight is sufficient, and the energy storage module 200 can be charged while all household appliances can be normally powered.

Further, besides the case that the efficiency of the photovoltaic power generation module 100 is high and the case that the efficiency is too low, there is also a case that the photovoltaic power generation module 100 is stopped, for example, the solar energy is not enough to be converted into the electric energy, therefore, based on the above-mentioned case, in the embodiment of the present application, the home energy storage system, wherein the power supply control module 300 further includes:

and the unidirectional power supply control unit is used for controlling the energy storage module 200 to supply power to each household electrical appliance connected with the energy storage module 200 when the photovoltaic power generation module 100 stops photoelectric conversion.

According to the above technical scheme of the application, when photovoltaic power generation module 100 stops photoelectric conversion, for example, rainy day, or under the condition of afternoon or even evening, when photovoltaic power generation module 100 is not enough to convert solar energy, at this moment, power is supplied by energy storage module 200 in a single direction, energy storage module 200 can not draw electric energy from photovoltaic power generation module 100, but because energy storage module 200 when photovoltaic power generation module 100 normally supplies electric energy, the electric energy has been stored, therefore, after photovoltaic power generation module 100 stops converting, supply power to household appliances through energy storage module 200.

Further, except for the situation in the foregoing solution, when the energy storage module 200 is short of supply and the photovoltaic power generation module 100 cannot charge the energy storage module 200 in time, in order to implement power supply of the household electrical appliance and charge and discharge control of the energy storage module 200, in the embodiment of the present application, the household energy storage system, wherein the power supply control module 300 further includes:

and the mains supply energy storage control unit is used for charging the energy storage module 200 and storing electric energy in the time period when the price of the mains supply is reduced.

In the embodiment of the application, for example, at night, the photovoltaic power generation module 100 stops the photoelectric conversion, but the power of the energy storage module 200 is insufficient, and the conversion efficiency of the photovoltaic power generation module 100 on the second day cannot be predicted, if the second day is a cloudy day, the power of the energy storage module 200 is insufficient, and the utility power is needed to be supplied by the utility power, but the utility power price in the daytime and the utility power price in the night are slightly different, the power price is allowed to come in and go out in the peak period of power utilization and the power price in the valley period of power utilization is lower than the power price in the peak period of power utilization, for example, in general situations, 12 pm to 7 am on the next day, the power price is the lowest, at this time, the energy storage module 200 can be charged by the utility power in the evening, because in the actual application process, the utility power is not used at all, and the power supply requirement of the household appliances can be maintained only by the power converted by the photovoltaic charging module, therefore, in order to save the electricity cost, it is preferable to charge the energy storage module 200 to store the electric energy in the time period when the commercial power price is reduced, and when the electricity price is higher, the energy storage module 200 can discharge electricity to supply power to the household appliances, thereby reducing the power supply cost while ensuring the power supply efficiency and stability,

further, in the foregoing solution, when the specific implementation is performed, when the photoelectric conversion efficiency of the photovoltaic charging module is higher, the energy storage module 200 can be charged in addition to meeting the power supply requirement of the household electrical appliance, and in order to further ensure resource utilization, in this embodiment of the application, the household energy storage system, wherein, with continuing reference to fig. 1, the system further includes:

and the heat dissipation module 600 is connected with the energy storage module 200 and is used for dissipating heat of the energy storage module 200 when the energy storage module 200 has sufficient electric energy.

In this application embodiment, the system still includes heat dissipation module 600, and under the sufficient condition of energy storage module 200 electric energy, for heat dissipation module 600 power supply, dispel the heat to energy storage module 200 through heat dissipation module 600, energy storage module 200 is as large-scale power, in the course of the work, produces a large amount of heats easily, dispels the heat through heat dissipation module 600, can alleviate the load, and the electric energy source of heat dissipation module 600 has improved resource utilization for the energy that energy storage module 200 is excessive simultaneously.

The second embodiment of the present application discloses a household energy storage method, which includes:

acquiring the photoelectric conversion efficiency of the photovoltaic power generation module 100;

when the photovoltaic power generation module 100 starts the photoelectric conversion and the photoelectric conversion efficiency is lower than the preset value, the energy storage module 200 is charged, and the energy storage module 200 is controlled to supply power to the household electrical appliance with low energy consumption:

when the photoelectric conversion efficiency of the photovoltaic power generation module 100 is higher than a preset value, charging the energy storage module 200, and controlling the energy storage module 200 to supply power to all household appliances;

when the photovoltaic power generation module 100 stops photoelectric conversion, the energy storage module 200 is controlled to supply power to all household appliances;

when the photovoltaic power generation module 100 stops the photoelectric conversion and the electricity price of the commercial power is reduced, the energy storage module 200 is charged by the commercial power and all household appliances are supplied with power by the commercial power.

In the embodiment of the present application, the photoelectric conversion rate of the photovoltaic power generation module 100 is obtained, and power is supplied to the energy storage module 200 according to the photoelectric conversion efficiency of different photovoltaic power generation modules 100, so as to ensure the power supply efficiency, the photoelectric conversion efficiency of the photovoltaic power generation module 100 has several intervals, wherein the interval includes that the photoelectric conversion can be turned on, but the photoelectric conversion efficiency is low, that is, the photovoltaic power generation module 100 can convert solar energy into electric energy, but the converted electric energy is not enough, at this time, in order to meet the power supply requirement of the household electrical appliance, the energy storage module 200 is controlled to obtain electric energy from the photovoltaic power generation module 100 and store the electric energy, and the household electrical appliance is supplied with power through the energy storage module 200, but at this time, because the electric energy is not enough, in order to ensure the power supply efficiency, the household electrical appliance with low power consumption is supplied with power through the energy storage module 200, and other house electrical apparatus, when the user need open, can supply power through the commercial power, in the above-mentioned embodiment of this application, the example, for example in morning, sunshine is not very sufficient, can carry out photoelectric conversion this moment, but photoelectric conversion's electric energy can be few, consequently, this moment, photovoltaic power generation module 100 opens photoelectric conversion, supplies power to energy storage module 200, and energy storage module 200 also can supply power, but the house electrical apparatus of power supply is small-size electrical apparatus such as refrigerator, electric light, the house electrical apparatus that consumes less power.

When the efficiency of the photovoltaic power generation module 100 is high, that is, at this time, the energy storage module 200 can supply power to a large-scale electric appliance in addition to the energy storage module 200 which can be normally charged by the electrical energy generated by the photovoltaic power generation module 100, at this time, in order to realize the full utilization of resources, through the charging and power supply synchronous control unit, the energy storage module 200 is controlled, that is, the energy storage module 200 is charged, and each connected household electrical appliance can be normally supplied with power, at this time, the type of the household electrical appliance and the power consumption are not limited, the electric energy generated by the photovoltaic power generation module 100 can be normally supplied to all household electrical appliances, and the energy storage module 200 can also be charged, for example, in the morning from one tenth to four afternoon, the sunlight is sufficient, and the energy storage module 200 can be charged while all household appliances can be normally powered.

When the photovoltaic power generation module 100 stops the photoelectric conversion, for example, in rainy days, afternoon or even in evening, when the photovoltaic power generation module 100 is not enough to convert solar energy, at this time, the energy storage module 200 supplies power in one direction, the energy storage module 200 cannot draw electric energy from the photovoltaic power generation module 100, but since the energy storage module 200 stores electric energy when the photovoltaic power generation module 100 normally supplies electric energy, after the photovoltaic power generation module 100 stops the conversion, the household electrical appliance is supplied with power through the energy storage module 200.

In the embodiment of the application, for example, at night, the photovoltaic power generation module 100 stops the photoelectric conversion, but the power of the energy storage module 200 is insufficient, and the conversion efficiency of the photovoltaic power generation module 100 on the second day cannot be predicted, if the second day is a cloudy day, the power of the energy storage module 200 is insufficient, and the utility power is needed to be supplied by the utility power, but the utility power price in the daytime and the utility power price in the night are slightly different, the power price is allowed to come in and go out in the peak period of power utilization and the power price in the valley period of power utilization is lower than the power price in the peak period of power utilization, for example, in general situations, 12 pm to 7 am on the next day, the power price is the lowest, at this time, the energy storage module 200 can be charged by the utility power in the evening, because in the actual application process, the utility power is not used at all, and the power supply requirement of the household appliances can be maintained only by the power converted by the photovoltaic charging module, therefore, in order to save the electricity consumption cost, preferably in the time slot that the commercial power price reduces, charge energy storage module 200, store the electric energy, when the electricity price is higher, then can discharge through energy storage module 200, supply power to house electrical apparatus, when guaranteeing power supply efficiency and stability, reduced the power supply cost.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.