Home energy storage and energy management system

Abstract

The present invention discloses a household energy storage and energy management system, comprising: a fixed energy storage subsystem and a mobile energy storage subsystem; the fixed energy storage subsystem includes: a fixed solar panel assembly; a first lithium-ion energy storage battery; a first charging module; a first inverter; and a first control module; the mobile energy storage subsystem includes: a transport vehicle; a mobile solar panel assembly; a second lithium-ion energy storage battery; a second charging module; a second inverter; and a second control module; the first charging module is capable of controlling the charging and discharging between the first and second lithium-ion batteries to adjust the power level of the first lithium-ion battery; and the first control module is capable of adjusting the pre-stored power level of the first lithium-ion battery based on the power required by AC power tools to be used the next day and the next day's weather conditions. The household energy storage and energy management system of the present invention can improve the utilization efficiency of solar energy and avoid energy waste.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic energy storage, and in particular relates to a household energy storage and energy management system. Background Art

[0002] The photovoltaic energy storage system combines solar photovoltaic power generation with energy storage technology to store the electricity generated by photovoltaic power generation so as to supply electricity when needed.

[0003] Photovoltaic energy storage systems include both fixed and mobile types. Mobile photovoltaic energy storage systems are equipped with lithium-ion storage batteries, which store the electrical energy converted by the mobile photovoltaic panels and then convert it to power AC power tools (such as electric drills and saws). In existing technical solutions, mobile photovoltaic energy storage systems are generally independent systems. In some cases, the energy converted from solar energy exceeds the storage limit of the energy storage battery, resulting in waste. In other cases, the energy converted from solar energy is too low to meet work needs. Summary of the Invention

[0004] The present invention provides a household energy storage and energy management system to solve the above-mentioned problems, using the following technical solutions:

[0005] A household energy storage and energy management system comprises: a fixed energy storage subsystem and a mobile energy storage subsystem that can be selectively electrically connected to or disconnected from the fixed energy storage subsystem;

[0006] The stationary energy storage subsystem comprises:

[0007] Fixed solar panel assemblies, fixed to the roof of a house, are used to convert solar energy into electrical energy;

[0008] a first lithium-ion energy storage battery connected to the fixed solar panel assembly for storing electrical energy generated by the fixed solar panel assembly;

[0009] a first charging module, connected to the fixed solar panel assembly and the first lithium-ion energy storage battery, for controlling the charging of the first lithium-ion energy storage battery;

[0010] a first inverter, connected to the fixed solar panel assembly, for converting the direct current generated by the fixed solar panel assembly into alternating current to power household AC appliances or to connect to a grid-connected point for transmission to the power grid;

[0011] a first control module connected to the fixed solar panel assembly, the first lithium-ion energy storage battery, the first charging module and the inverter to control the fixed solar panel assembly, the first lithium-ion energy storage battery, the first charging module and the first inverter;

[0012] The mobile energy storage subsystem includes:

[0013] A transport vehicle, wherein the transport vehicle is provided with a compartment for accommodating a plurality of AC power tools, and the compartment is provided with a plurality of sockets for plugging in the AC power tools;

[0014] A mobile solar panel assembly is arranged on the top of the vehicle and is used to convert solar energy into electrical energy;

[0015] a second lithium-ion energy storage battery, disposed in the vehicle compartment, the second lithium-ion energy storage battery being connected to the mobile solar panel assembly for storing electrical energy generated by the mobile solar panel assembly;

[0016] a second charging module, disposed in the vehicle compartment, connected to the mobile solar panel assembly and the second lithium-ion energy storage battery, and configured to control charging of the second lithium-ion energy storage battery;

[0017] a second inverter, connected to the second lithium-ion energy storage battery, for converting the direct current stored in the second lithium-ion energy storage battery into alternating current to power the AC power tool;

[0018] a second control module connected to the mobile solar panel assembly, the second lithium-ion energy storage battery, the second charging module and the second inverter to control the mobile solar panel assembly, the second lithium-ion energy storage battery, the second charging module and the second inverter;

[0019] When the transport vehicle is parked next to the house, the mobile energy storage subsystem is electrically connected to the fixed energy storage subsystem via a cable. At this time, the first inverter is also connected to the mobile solar panel assembly and converts the direct current generated by the mobile solar panel assembly into alternating current, which is then connected to the grid connection point and transmitted to the power grid.

[0020] The first charging module can also control the charging and discharging between the first lithium-ion energy storage battery and the second lithium-ion energy storage battery to adjust the power of the second lithium-ion energy storage battery. The first control module can adjust the pre-stored power of the second lithium-ion energy storage battery according to the working power requirement of the AC power tool needed the next day and the weather conditions the next day.

[0021] Furthermore, the household energy storage and energy management system further comprises a cloud server, and the fixed energy storage subsystem and the mobile energy storage subsystem are both wirelessly connected to the cloud server;

[0022] The cloud server obtains the weather conditions of the next day through the Internet, the first control module is wirelessly connected to the cloud server, and the cloud server controls the first control module to adjust the pre-stored power of the second lithium-ion energy storage battery according to the working power demand and weather conditions of the AC power tool on the next day.

[0023] Furthermore, the household energy storage and energy management system further includes a smart mobile terminal, through which the power required for the AC power tools for the next day is sent to the cloud server.

[0024] Furthermore, the model of the AC power tool is registered with the cloud server through the smart mobile terminal, and the usage time of the corresponding AC power tool required to be used the next day is sent to the cloud server through the smart mobile terminal. The cloud server matches the corresponding power consumption efficiency according to the model of the AC power tool, and calculates the total required working power according to the corresponding working time and power consumption efficiency.

[0025] Furthermore, the cloud server calculates the expected power generation of the mobile solar panel assembly the next day based on the weather conditions of the next day, the sum of the expected power generation and the pre-stored power is greater than the working power requirement, the difference between the sum of the expected power generation and the pre-stored power of the second lithium-ion energy storage battery and the working power requirement is less than the total capacity of the second lithium-ion energy storage battery, and when the sum of the expected power generation and the pre-stored power is less than the working power requirement, the pre-stored power is the fully charged state of the second lithium-ion energy storage battery.

[0026] Furthermore, the work location is sent to the cloud server through the smart mobile terminal, and the cloud server automatically calculates the work start time point based on the work location and address. The cloud server calculates the first expected power generation of the mobile solar panel assembly before the work start time point based on the weather conditions of the next day, and the maximum value of the pre-stored power is less than the difference between the total capacity of the second lithium-ion energy storage battery and the first expected power generation.

[0027] Furthermore, when the work of the day is completed, an end signal and the power required for the next day's work are sent to the cloud server through the smart mobile terminal. The cloud server obtains the current actual power of the second lithium-ion energy storage battery, and calculates the new pre-stored power based on the power required for the next day's work and weather conditions. When the new pre-stored power is greater than the current actual power of the second lithium-ion energy storage battery, the cloud server controls the first control module to lock the electric energy corresponding to the first lithium-ion energy storage battery. When the new pre-stored power is less than the current actual power of the first lithium-ion energy storage battery, the cloud server controls the first control module to lock the energy storage space corresponding to the first lithium-ion energy storage battery.

[0028] Furthermore, the cloud server calculates a second expected power generation after the end time point based on the end time point and the weather conditions of the next day. When the new pre-stored power is greater than the sum of the current actual power of the second lithium-ion energy storage battery and the second expected power generation, the cloud server controls the first control module to lock the power corresponding to the first lithium-ion energy storage battery. When the new pre-stored power is less than the sum of the current actual power of the second lithium-ion energy storage battery and the second expected power generation, the cloud server controls the first control module to lock the energy storage space corresponding to the first lithium-ion energy storage battery.

[0029] Furthermore, the stationary energy storage subsystem further comprises:

[0030] The power consumption statistics module is used to count the total power consumption of household appliances connected to the fixed energy storage subsystem every day within the most recent predetermined period. The first control module determines the power retention state of the first lithium-ion energy storage battery based on the average value of the total power consumption every day within the predetermined period, and maintains the power of the first lithium-ion energy storage battery in the power retention state.

[0031] Furthermore, an additional power application is sent to the cloud server through the smart mobile terminal. After receiving the additional power application, the cloud server controls the first control module to increase the power of the first lithium-ion energy storage battery from the power maintenance state to the target state according to the power value requested in the additional power application.

[0032] The benefit of the present invention is that the provided household energy storage and energy management system can improve the efficiency of solar energy utilization and avoid energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of a household energy storage and energy management system provided by the present invention. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] like Figure 1 The present application shows a household energy storage and energy management system, which includes a fixed energy storage subsystem and a mobile energy storage subsystem. The fixed energy storage subsystem is deployed in a residential area, while the mobile energy storage subsystem is deployed on a transport vehicle and can be moved to a workplace to provide energy as needed.

[0037] The mobile energy storage subsystem can be selectively electrically connected or disconnected from the fixed energy storage subsystem. That is, when the mobile energy storage subsystem is docked at a residential location at night or on non-working days, it can be electrically connected to the fixed energy storage subsystem via cables, allowing the two to operate as a single unit.

[0038] In an embodiment of the present application, the fixed energy storage subsystem includes: a fixed solar panel assembly, a first lithium-ion energy storage battery, a first charging module, a first inverter, and a first control module. The fixed solar panel assembly is used to convert solar energy into electrical energy, and is fixed to the roof of the house. The first lithium-ion energy storage battery is connected to the fixed solar panel assembly and is used to store the electrical energy generated by the fixed solar panel assembly. The first charging module is connected to the fixed solar panel assembly and the first lithium-ion energy storage battery and is used to control the charging of the first lithium-ion energy storage battery. The first inverter is connected to the fixed solar panel assembly and is used to convert the direct current generated by the fixed solar panel assembly into alternating current to power household AC appliances or directly connect to the grid point to transmit excess electrical energy to the grid. It is understandable that the first inverter is also connected to the first lithium-ion energy storage battery to convert the direct current stored in the first lithium-ion energy storage battery into alternating current to power household AC appliances. The first control module is connected to the stationary solar panel assembly, the first lithium-ion energy storage battery, the first charging module, and the inverter. The first control module is capable of controlling the stationary solar panel assembly, the first lithium-ion energy storage battery, the first charging module, and the first inverter. In this way, the stationary energy storage subsystem can provide daily electricity needs of the residential area and can also integrate excess electricity into the power grid.

[0039] In an embodiment of the present application, a mobile energy storage subsystem includes: a transport vehicle, a mobile solar panel assembly, a second lithium-ion energy storage battery, a second charging module, a second inverter, and a second control module. Specifically, the transport vehicle is a conventional gasoline or diesel vehicle. The transport vehicle has a compartment for storing a plurality of AC power tools, and the compartment is provided with a plurality of sockets for plugging in the AC power tools. Specifically, the AC power tools include, but are not limited to, conventional work tools such as electric saws, rotary hammers, or electric drills. The mobile solar panel assembly is mounted on the roof of the compartment to convert solar energy into electrical energy. The second lithium-ion energy storage battery is mounted within the compartment and connected to the mobile solar panel assembly to store the electrical energy generated by the mobile solar panel assembly. The second charging module is mounted within the compartment and connected to the mobile solar panel assembly and the second lithium-ion energy storage battery to control the charging of the second lithium-ion energy storage battery. The second inverter is connected to the second lithium-ion energy storage battery to convert the DC power stored in the second lithium-ion energy storage battery into AC power to power the AC power tools. The second control module is connected to the mobile solar panel assembly, the second lithium-ion energy storage battery, the second charging module and the second inverter to control the mobile solar panel assembly, the second lithium-ion energy storage battery, the second charging module and the second inverter.

[0040] When the transport vehicle is parked next to the house, the mobile energy storage subsystem is electrically connected to the fixed energy storage subsystem via cables. At this point, the first inverter is connected to the mobile solar panel assembly. During non-working hours, the mobile and fixed energy storage subsystems form a complete photovoltaic system. The inverter not only converts the DC power generated by the fixed solar panel assembly into AC power for connection to the grid, but also converts the DC power generated by the mobile solar panel assembly into AC power for connection to the grid.

[0041] In the embodiment of the present application, the first charging module can control the charging and discharging between the first lithium-ion energy storage battery and the second lithium-ion energy storage battery to adjust the power of the first lithium-ion energy storage battery. Specifically, the first control module can adjust the pre-stored power of the second lithium-ion energy storage battery according to the power required for the AC power tool to be used the next day and the weather conditions of the next day. That is, when the mobile energy storage subsystem needs to be moved to the workplace for work the next day, the first charging module can determine how much power to pre-store in the second lithium-ion energy storage battery based on the power required for the work the next day and the weather conditions of the next day, so that it can meet the work needs while preventing the second lithium-ion energy storage battery from being unable to continue to store the electric energy converted by the mobile solar panel assembly due to being fully charged.

[0042] In a preferred embodiment, the cloud server calculates the mobile solar panel assembly's expected power generation for the next day based on the next day's weather conditions. Specifically, by obtaining the current regional weather forecast in advance, the next day's weather data, such as sunshine conditions, can be obtained with relatively high accuracy. Based on this sunshine data, the mobile solar panel assembly's total power generation for the next day, i.e., the expected power generation, can be calculated with high accuracy.

[0043] It is understandable that if the second lithium-ion energy storage battery has a low pre-stored charge from the previous day, and the workload is heavy the next day, the combined power generated by the mobile solar panel assembly and the pre-stored charge may not be enough to meet the total power consumption, resulting in an inability to complete the work. Similarly, if the second lithium-ion energy storage battery has a high pre-stored charge from the previous day, but the workload is light the next day, the second lithium-ion energy storage battery may be unable to store any more power after being fully charged, resulting in energy waste.

[0044] Therefore, to avoid the above situation, in this application, the first control module controls the pre-stored power of the second lithium-ion energy storage battery so that the sum of the expected power generation and the pre-stored power is greater than the power required for the work, thereby avoiding insufficient power and the inability to complete the work. At the same time, the difference between the sum of the expected power generation and the pre-stored power of the second lithium-ion energy storage battery and the power required for the work is less than the total capacity of the second lithium-ion energy storage battery, thereby avoiding the situation where the pre-stored power is too large and the electric energy converted by the mobile solar panel assembly fully charges the second lithium-ion energy storage battery and is unable to store further electric energy.

[0045] As a preferred embodiment, the household energy storage and energy management system further includes a cloud server and an intelligent mobile terminal. The intelligent mobile terminal, the fixed energy storage subsystem and the mobile energy storage subsystem are all wirelessly connected to the cloud server. The cloud server obtains the weather conditions of the next day through networking. The first control module is wirelessly connected to the cloud server, and the cloud server controls the first control module to adjust the pre-stored power of the second lithium-ion energy storage battery according to the working power demand of the AC power tool and the weather conditions of the next day. The working power demand of the AC power tool for the next day is sent to the cloud server via the intelligent mobile terminal. Specifically, the intelligent mobile terminal can be a mobile phone or a smart tablet, etc.

[0046] As a preferred implementation, the model of the AC power tool is registered with the cloud server through the smart mobile terminal, and the usage time of the corresponding AC power tool required for the next day is sent to the cloud server through the smart mobile terminal. The cloud server matches the corresponding power consumption efficiency according to the model of the AC power tool, and calculates the total working power requirement according to the corresponding working time and power consumption efficiency.

[0047] Specifically, the amount of electricity required for work is determined by the operating time of the AC power tool that needs to be used the next day. Users need to estimate the operating time of the AC power tool and then roughly determine the required power consumption. However, different working tools have different energy consumption efficiency when working. In order to improve the accuracy of the estimation of the required amount of electricity for work, existing AC power tools are registered in the cloud server. The cloud server stores the power consumption efficiency corresponding to each model of AC power tool. In this way, the user only needs to input the operating time of the AC power tool that needs to be used the next day through the smart mobile terminal, and the cloud server will be able to calculate the total amount of electricity required for work. It is understandable that, in general, in order to ensure that the power of the second lithium-ion energy storage battery can meet the work needs of the next day, the user can increase the estimated value as appropriate when estimating the working time of the working tool and retain a certain margin.

[0048] When the sum of the projected power generation and the pre-stored power is less than the required power for the operation, the pre-stored power represents the fully charged state of the second lithium-ion energy storage battery. In some cases, due to the heavy workload the next day, even if the second lithium-ion energy storage battery is fully charged, combined with the power generation for the next day, it may not be able to meet the work demand.

[0049] As a preferred embodiment, the work location is sent to the cloud server through the smart mobile terminal, and the cloud server automatically calculates the work start time based on the work location and address. The cloud server calculates the first expected power generation of the mobile solar panel assembly before the work start time based on the weather conditions of the next day, and the maximum value of the pre-stored power is less than the difference between the total capacity of the second lithium-ion energy storage battery and the first expected power generation.

[0050] It's understandable that on a workday, driving the transport vehicle to the work location and actually starting work (assuming the work start time is 10:00) takes a considerable amount of time. However, the mobile solar panel assembly has already begun converting electricity before the user actually starts working. Assuming the pre-stored charge of the second lithium-ion energy storage battery is set to 100%, the electricity converted by the mobile solar panel assembly before the user actually starts working is completely wasted. Therefore, to avoid this situation, after the user uploads the work location, the cloud server can calculate an approximate work start time based on the user's departure time (generally set to 8:00) and the vehicle's travel time. After calculating the work start time, the cloud server calculates a first estimated power generation of the mobile solar panel assembly before the work start time based on the next day's weather conditions. To avoid wasting the first estimated power generation, the second lithium-ion energy storage battery needs to retain the capacity to store this energy. Specifically, the maximum pre-stored charge is less than the difference between the total capacity of the second lithium-ion energy storage battery and the first estimated power generation. In this way, the generated first estimated power generation can be fully stored in the second lithium-ion energy storage battery.

[0051] As a preferred embodiment, when the work for the day is completed, an end signal and the power required for the next day's work are sent to the cloud server via the smart mobile terminal. The cloud server obtains the current actual power of the second lithium-ion energy storage battery, and calculates a new pre-stored power based on the power required for the next day's work and weather conditions. When the new pre-stored power is greater than the current actual power of the second lithium-ion energy storage battery, the cloud server controls the first control module to lock the power corresponding to the first lithium-ion energy storage battery (i.e., other electrical devices cannot use this part of the power). When the new pre-stored power is less than the current actual power of the first lithium-ion energy storage battery, the cloud server controls the first control module to lock the energy storage space corresponding to the first lithium-ion energy storage battery (i.e., the first lithium-ion energy storage battery always retains a minimum of this power storage space).

[0052] It is understood that after completing the operation, when the vehicle returns to the residence and connects to the fixed energy storage subsystem, the cloud server will need to determine whether to charge the second lithium-ion energy storage battery via the first lithium-ion energy storage battery or the first lithium-ion energy storage battery via the second lithium-ion energy storage battery based on the mobile energy storage system's workload and weather conditions the next day. If the second lithium-ion energy storage battery needs to be charged via the first lithium-ion energy storage battery, the first lithium-ion energy storage battery of the fixed energy storage subsystem must reserve this amount of power. If the first lithium-ion energy storage battery needs to be charged via the second lithium-ion energy storage battery, the first lithium-ion energy storage battery of the fixed energy storage subsystem must reserve the corresponding storage space to store this amount of power. Whether controlling the first lithium-ion energy storage battery to reserve power or reserve storage space, it is preferable to know the requirements in advance to facilitate control. This is because after completing the operation, the vehicle generally returns to the residence late, at which time the fixed solar panel assembly may no longer be able to generate electricity. At this time, if the first lithium-ion energy storage battery has less energy, it may not be able to meet the energy needs of the second lithium-ion energy storage battery. At the same time, if the first lithium-ion energy storage battery has more energy, it may not have enough storage space to receive the energy transmitted back by the second lithium-ion energy storage battery.

[0053] As a preferred embodiment, the cloud server calculates the second expected power generation after the end time point based on the end time point and the weather conditions of the day. When the new pre-stored power is greater than the sum of the current actual power of the second lithium-ion energy storage battery and the second expected power generation, the cloud server controls the first control module to lock the power corresponding to the first lithium-ion energy storage battery. When the new pre-stored power is less than the sum of the current actual power of the second lithium-ion energy storage battery and the second expected power generation, the cloud server controls the first control module to lock the energy storage space corresponding to the first lithium-ion energy storage battery.

[0054] It is understandable that when an end signal is sent to the cloud server via the smart mobile terminal, the remaining power of the second lithium-ion energy storage battery obtained by the cloud server is the value at the end time of receiving the signal. However, when the vehicle is driving back, the mobile solar panel assembly continues to generate electricity. The earlier the time of ending the work, the greater the electricity generated during this period, which cannot be ignored. Therefore, in order to improve the accuracy of the calculation of the new pre-stored power, the cloud server calculates the second expected power generation after the end time based on the end time and the weather conditions of the next day, and sums the second expected power generation and the current actual power of the second lithium-ion energy storage battery as the final actual power of the second lithium-ion energy storage battery. This final actual power is compared with the calculated new pre-stored power to determine whether the second lithium-ion energy storage battery is charged by the first lithium-ion energy storage battery, or whether the first lithium-ion energy storage battery is charged by the second lithium-ion energy storage battery.

[0055] As a preferred embodiment, the fixed energy storage subsystem further includes: an electricity consumption statistics module.

[0056] Specifically, the electricity consumption statistics module is used to count the total daily electricity consumption of household appliances connected to the fixed energy storage subsystem within the most recent predetermined period. Preferably, a week is generally selected as the predetermined period. It is understandable that the predetermined period can be adjusted as needed, and this application does not impose any restrictions. The electricity consumption statistics module counts the total daily electricity consumption in the most recent week and calculates the average daily electricity consumption. The first control module determines the power retention state of the first lithium-ion energy storage battery based on the average value of the total daily electricity consumption within the predetermined period. Specifically, multiple status gears can be set, such as 40%, 50% or 60%, and the storage gear at which the first lithium-ion energy storage battery is maintained is determined based on the average power consumption value.

[0057] It can be understood that the above description that when the new pre-stored power is greater than the current actual power of the second lithium-ion energy storage battery, the cloud server controls the first control module to lock the power corresponding to the first lithium-ion energy storage battery means that on the basis of maintaining the power retention state of the first lithium-ion energy storage battery at the corresponding gear, additional corresponding power is stored.

[0058] As a preferred embodiment, an additional power application is sent to a cloud server through a smart mobile terminal. After receiving the additional power application, the cloud server controls the first control module to increase the power of the first lithium-ion energy storage battery from a power maintenance state to a target state according to the power value requested in the additional power application.

[0059] It is understandable that in some special circumstances, it is temporarily necessary to recharge some additional electrical appliances (i.e., non-common household appliances). If the power level of the first lithium-ion energy storage battery is maintained in the power retention state of the target gear, it may not be able to meet the demand. At this time, an additional power application can be sent to the cloud server through the smart mobile terminal, and the additional power application includes the required power. In this way, after receiving the additional power application, the cloud server controls the first control module to increase the power level of the first lithium-ion energy storage battery from the power retention state to the target state according to the power value applied for in the additional power application. The power value corresponding to this target state is the power value corresponding to the current power retention state plus the power value of the additional application.

[0060] It is understood that the first control module regulates the first lithium-ion energy storage battery based on the premise that the fixed solar panel assembly is converting energy to generate electricity when energy replenishment is required. If the fixed solar panel assembly is not generating electricity (such as at night), the relevant control is performed only after the fixed solar panel assembly begins converting energy.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of the present invention.

Claims

1. A household energy storage and energy management system, characterized in that: It comprises: a fixed energy storage subsystem and a mobile energy storage subsystem which can be selectively electrically connected to or disconnected from the fixed energy storage subsystem; The stationary energy storage subsystem comprises: Fixed solar panel assemblies, fixed to the roof of a house, are used to convert solar energy into electrical energy; a first lithium-ion energy storage battery connected to the fixed solar panel assembly for storing electrical energy generated by the fixed solar panel assembly; a first charging module, connected to the fixed solar panel assembly and the first lithium-ion energy storage battery, for controlling the charging of the first lithium-ion energy storage battery; a first inverter, connected to the fixed solar panel assembly, for converting the direct current generated by the fixed solar panel assembly into alternating current to power household AC appliances or to connect to a grid-connected point for transmission to the power grid; a first control module connected to the fixed solar panel assembly, the first lithium-ion energy storage battery, the first charging module and the inverter to control the fixed solar panel assembly, the first lithium-ion energy storage battery, the first charging module and the first inverter; The mobile energy storage subsystem includes: A transport vehicle, wherein the transport vehicle is provided with a compartment for accommodating a plurality of AC power tools, and the compartment is provided with a plurality of sockets for plugging in the AC power tools; A mobile solar panel assembly is arranged on the top of the vehicle and is used to convert solar energy into electrical energy; a second lithium-ion energy storage battery, disposed in the vehicle compartment, the second lithium-ion energy storage battery being connected to the mobile solar panel assembly for storing electrical energy generated by the mobile solar panel assembly; a second charging module, disposed in the vehicle compartment, connected to the mobile solar panel assembly and the second lithium-ion energy storage battery, and configured to control charging of the second lithium-ion energy storage battery; a second inverter, connected to the second lithium-ion energy storage battery, for converting the direct current stored in the second lithium-ion energy storage battery into alternating current to power the AC power tool; a second control module connected to the mobile solar panel assembly, the second lithium-ion energy storage battery, the second charging module and the second inverter to control the mobile solar panel assembly, the second lithium-ion energy storage battery, the second charging module and the second inverter; When the transport vehicle is parked next to the house, the mobile energy storage subsystem is electrically connected to the fixed energy storage subsystem via a cable. At this time, the first inverter is also connected to the mobile solar panel assembly and converts the direct current generated by the mobile solar panel assembly into alternating current, which is then connected to the grid connection point and transmitted to the power grid. The first charging module is further capable of controlling the charging and discharging between the first lithium-ion energy storage battery and the second lithium-ion energy storage battery to adjust the power of the second lithium-ion energy storage battery. The first control module is capable of adjusting the pre-stored power of the second lithium-ion energy storage battery according to the power required by the AC power tool to be used the next day and the weather conditions of the next day. The household energy storage and energy management system further comprises a cloud server, and the fixed energy storage subsystem and the mobile energy storage subsystem are both wirelessly connected to the cloud server; The cloud server obtains weather conditions for the next day via an internet connection, the first control module is wirelessly connected to the cloud server, and the cloud server controls the first control module to adjust the pre-stored power of the second lithium-ion energy storage battery based on the power demand of the AC power tool and weather conditions for the next day; The household energy storage and energy management system further comprises a smart mobile terminal, which transmits the next day's working power demand of the AC power tool to the cloud server through the smart mobile terminal; The cloud server calculates an estimated power generation of the mobile solar panel assembly for the next day based on weather conditions for the next day, the sum of the estimated power generation and the pre-stored power is greater than the required power for operation, the difference between the sum of the estimated power generation and the pre-stored power of the second lithium-ion energy storage battery and the required power for operation is less than the total capacity of the second lithium-ion energy storage battery, and when the sum of the estimated power generation and the pre-stored power is less than the required power for operation, the pre-stored power indicates that the second lithium-ion energy storage battery is fully charged; The work location is sent to the cloud server via the smart mobile terminal, and the cloud server automatically calculates the work start time based on the work location and address. The cloud server calculates the first estimated power generation of the mobile solar panel assembly before the work start time based on the weather conditions of the next day, and the maximum value of the pre-stored power is less than the difference between the total capacity of the second lithium-ion energy storage battery and the first estimated power generation.

2. The household energy storage and energy management system according to claim 1, characterized in that: The model of the AC power tool is registered with the cloud server through the smart mobile terminal, and the usage time of the corresponding AC power tool required to be used the next day is sent to the cloud server through the smart mobile terminal. The cloud server matches the corresponding power consumption efficiency according to the model of the AC power tool, and calculates the total required power according to the corresponding working time and power consumption efficiency.

3. The household energy storage and energy management system according to claim 1, characterized in that: When the work of the day is completed, an end signal and the power required for the next day's work are sent to the cloud server through the smart mobile terminal. The cloud server obtains the current actual power of the second lithium-ion energy storage battery, and calculates the new pre-stored power according to the power required for the next day's work and weather conditions. When the new pre-stored power is greater than the current actual power of the second lithium-ion energy storage battery, the cloud server controls the first control module to lock the electric energy corresponding to the first lithium-ion energy storage battery. When the new pre-stored power is less than the current actual power of the first lithium-ion energy storage battery, the cloud server controls the first control module to lock the energy storage space corresponding to the first lithium-ion energy storage battery.

4. The household energy storage and energy management system according to claim 3, characterized in that: The cloud server calculates a second expected power generation after the end signal based on the end signal and the weather conditions of the next day. When the new pre-stored power is greater than the sum of the current actual power of the second lithium-ion energy storage battery and the second expected power generation, the cloud server controls the first control module to lock the power corresponding to the first lithium-ion energy storage battery. When the new pre-stored power is less than the sum of the current actual power of the second lithium-ion energy storage battery and the second expected power generation, the cloud server controls the first control module to lock the energy storage space corresponding to the first lithium-ion energy storage battery.

5. The household energy storage and energy management system according to claim 1, characterized in that: The stationary energy storage subsystem further comprises: The power consumption statistics module is used to count the total power consumption of household appliances connected to the fixed energy storage subsystem every day within the most recent predetermined period. The first control module determines the power retention state of the first lithium-ion energy storage battery based on the average value of the total power consumption every day within the predetermined period, and maintains the power of the first lithium-ion energy storage battery in the power retention state.

6. The household energy storage and energy management system according to claim 5, characterized in that: An additional power application is sent to the cloud server through the smart mobile terminal. After receiving the additional power application, the cloud server controls the first control module to increase the power of the first lithium-ion energy storage battery from a power maintenance state to a target state according to the power value requested in the additional power application.

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