CN117293875A - Household energy storage and energy management system - Google Patents

Household energy storage and energy management system Download PDF

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Publication number
CN117293875A
CN117293875A CN202311183565.3A CN202311183565A CN117293875A CN 117293875 A CN117293875 A CN 117293875A CN 202311183565 A CN202311183565 A CN 202311183565A CN 117293875 A CN117293875 A CN 117293875A
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CN
China
Prior art keywords
energy storage
lithium ion
storage battery
ion energy
cloud server
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311183565.3A
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Chinese (zh)
Inventor
潘赞明
程家毅
蔡振波
刘峰
齐云峰
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Hangzhou Jisu Electronics Co ltd
Original Assignee
Hangzhou Jisu Electronics Co ltd
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Publication date
Application filed by Hangzhou Jisu Electronics Co ltd filed Critical Hangzhou Jisu Electronics Co ltd
Priority to CN202311183565.3A priority Critical patent/CN117293875A/en
Publication of CN117293875A publication Critical patent/CN117293875A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/51—Photovoltaic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/53—Batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/68—Off-site monitoring or control, e.g. remote control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]

Abstract

The invention discloses a household energy storage and energy management system, which comprises: a stationary energy storage subsystem and a mobile energy storage subsystem; the stationary energy storage subsystem comprises: a stationary 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 comprises: a transport vehicle; a mobile solar panel assembly; a second lithium ion energy storage battery; a second charging module; a second inverter; a second control module; the first charging module can control charging and discharging between the first lithium ion battery and the second lithium ion battery to adjust the electric quantity of the first lithium ion battery, and the first control module can adjust the pre-stored electric quantity of the first lithium ion battery according to the working demand electric quantity of the alternating current electric tool required to be used next day and the weather condition of next day. The household energy storage and energy management system can improve the utilization efficiency of solar energy and avoid energy waste.

Description

Household energy storage and energy management system
Technical Field
The invention belongs to the technical field of photovoltaic energy storage, and particularly relates to a household energy storage and energy management system.
Background
The photovoltaic energy storage system combines solar photovoltaic power generation with energy storage technology, and stores electric energy generated by photovoltaic power generation so as to supply electric power when needed.
Photovoltaic energy storage systems include stationary and mobile. The portable photovoltaic energy storage system is provided with a lithium ion storage battery which stores the electric energy converted by the portable photovoltaic panel and supplies power to alternating current electric tools (such as electric drills, electric saws and other electric tools) after conversion. In the prior art, the mobile photovoltaic energy storage system is generally an independent system, and in some cases, the energy converted by solar energy exceeds the upper limit of the energy storage battery to cause waste, or in some cases, the energy converted by solar energy is lower and cannot meet the working requirement.
Disclosure of Invention
The invention provides a household energy storage and energy management system, which is used for solving the problems, and adopts the following technical scheme:
a home energy storage and management system comprising: a stationary energy storage subsystem and a mobile energy storage subsystem selectively electrically connected to or disconnected from the stationary energy storage subsystem;
the stationary energy storage subsystem includes:
a stationary solar panel assembly, secured to a roof of a house, for converting solar energy into electrical energy;
a first lithium ion energy storage battery connected to the stationary solar panel assembly for storing electrical energy generated by the stationary 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 for controlling the charging of the first lithium ion energy storage battery;
the first inverter is connected to the fixed solar panel assembly and is used for converting direct current generated by the fixed solar panel assembly into alternating current and then supplying power to a household alternating current appliance or connecting the household alternating current appliance into a grid-connected network to be transmitted to a power grid;
a first control module connected to the stationary solar panel assembly, the first lithium ion energy storage battery, the first charging module, and the inverter to control the stationary solar panel assembly, the first lithium ion energy storage battery, the first charging module, and the first inverter;
the mobile energy storage subsystem includes:
the transport vehicle is provided with a carriage which is used for accommodating a plurality of alternating current electric tools, and a plurality of sockets which are used for being inserted into the alternating current electric tools;
the movable solar panel assembly is arranged at the top of the carriage and is used for converting solar energy into electric energy;
the second lithium ion energy storage battery is arranged in the carriage and connected to the movable solar panel assembly for storing electric energy generated by the movable solar panel assembly;
the second charging module is arranged in the carriage and connected to the movable solar panel assembly and the second lithium ion energy storage battery, and is used for controlling the charging of the second lithium ion energy storage battery;
the second inverter is connected to the second lithium ion energy storage battery and is used for converting direct current stored by the second lithium ion energy storage battery into alternating current and supplying power for the alternating current electric 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 beside a house, the movable energy storage subsystem is electrically connected to the fixed energy storage subsystem through a cable, and at the moment, the first inverter is also connected to the movable solar panel assembly and is used for converting direct current generated by the movable solar panel assembly into alternating current and then connecting the alternating current into grid-connected network points to be transmitted to a power grid;
the first charging module can also control the charge and discharge between the first lithium ion energy storage battery and the second lithium ion energy storage battery so as to adjust the electric quantity of the second lithium ion energy storage battery, and the first control module can adjust the pre-stored electric quantity of the second lithium ion energy storage battery according to the working demand electric quantity of the alternating current electric tool required to be used in the next day and the weather condition of the next day.
Further, 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 connected to the cloud server in a wireless manner;
the cloud server obtains the weather condition of the next day through a networking mode, the first control module is connected to the cloud server in a wireless mode, and the cloud server controls the first control module to adjust the pre-stored electric quantity of the second lithium ion energy storage battery according to the working demand electric quantity and the weather condition of the alternating current electric tool of the next day.
Further, the household energy storage and energy management system further comprises an intelligent mobile terminal, and the working demand electric quantity of the alternating current electric tool in the next day is sent to the cloud server through the intelligent mobile terminal.
Further, the intelligent mobile terminal registers the model of the alternating current electric tool to the cloud server, the intelligent mobile terminal sends the using time of the corresponding alternating current electric tool needed to be used next day to the cloud server, the cloud server matches the corresponding power consumption efficiency according to the model of the alternating current electric tool, and the total work demand electric quantity is calculated according to the corresponding work time and the power consumption efficiency.
Further, the cloud server calculates an expected power generation amount of the mobile solar panel assembly in the next day according to the weather condition of the next day, the sum of the expected power generation amount and the pre-stored power amount is larger than the working demand power amount, the difference between the sum of the expected power generation amount and the pre-stored power amount of the second lithium ion energy storage battery and the working demand power amount is smaller than the total capacity of the second lithium ion energy storage battery, and when the sum of the expected power generation amount and the pre-stored power amount is smaller than the working demand power amount, the pre-stored power amount is in a full power state of the second lithium ion energy storage battery.
Further, the intelligent mobile terminal sends a working place to the cloud server, the cloud server automatically calculates a working starting time point according to the working place and an address, the cloud server calculates a first expected generated energy of the mobile solar panel assembly before the working starting time point according to the weather condition of the next day, and the maximum value of the pre-stored electric energy is smaller than the difference value between the total capacity of the second lithium ion energy storage battery and the first expected generated energy.
Further, when the work on the day is completed, an end signal and the working demand electric quantity on the next day are sent to the cloud server through the intelligent mobile terminal, the cloud server obtains the current actual electric quantity of the second lithium ion energy storage battery, the cloud server calculates new pre-stored electric quantity according to the working demand electric quantity on the next day and weather conditions, when the new pre-stored electric quantity is larger than the current actual electric quantity 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, and when the new pre-stored electric quantity is smaller than the current actual electric quantity 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.
Further, the cloud server calculates a second estimated power generation amount after the ending time point according to the ending time point and the weather condition of the next day, when the new pre-stored power is larger than the sum of the current actual power of the second lithium ion energy storage battery and the second estimated power generation amount, the cloud server controls the first control module to lock the power corresponding to the first lithium ion energy storage battery, and when the new pre-stored power is smaller than the sum of the current actual power of the second lithium ion energy storage battery and the second estimated power generation amount, the cloud server controls the first control module to lock the energy storage space corresponding to the first lithium ion energy storage battery.
Further, the stationary energy storage subsystem further comprises:
the power consumption statistics module is used for counting total power consumption of household appliances connected to the fixed energy storage subsystem in a day in a latest preset period, and the first control module determines the power holding state of the first lithium ion energy storage battery according to the average value of the total power consumption in the day in the preset period and maintains the power of the first lithium ion energy storage battery in the power holding state.
Further, the intelligent mobile terminal sends an additional electricity application to the cloud server, and the cloud server controls the first control module to lift the electric quantity of the first lithium ion energy storage battery from the electric quantity maintaining state to the target state according to the electric quantity value applied by the additional electricity application after receiving the additional electricity application.
The household energy storage and energy management system has the advantages that the household energy storage and energy management system can improve the utilization efficiency of solar energy and avoid energy waste.
Drawings
Fig. 1 is a schematic diagram of a household energy storage and management system according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Examples of embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Fig. 1 shows a household energy storage and management system according to the present application, comprising: a stationary energy storage subsystem and a mobile energy storage subsystem. The fixed energy storage subsystem is arranged in a living place, the movable energy storage subsystem is arranged on a transport vehicle, and the movable energy storage subsystem can be moved to a working place to provide energy according to requirements.
The mobile energy storage subsystem is selectively electrically connected to or disconnected from the stationary energy storage subsystem. That is, when the mobile energy storage subsystem is parked at a residential site at night or on a non-workday, the mobile energy storage subsystem may be electrically connected to the stationary energy storage subsystem through a cable, at which time both may operate as a whole.
In an embodiment of the present application, a stationary energy storage subsystem comprises: the device comprises a fixed solar panel assembly, a first lithium ion energy storage battery, a first charging module, a first inverter and a first control module. Wherein a stationary solar panel assembly is used to convert solar energy into electrical energy, which is secured to the roof of a house. The first lithium ion energy storage battery is connected to the fixed solar panel assembly and used for storing electric 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 used for controlling charging of the first lithium ion energy storage battery. The first inverter is connected to the fixed solar panel assembly and is used for converting direct current generated by the fixed solar panel assembly into alternating current and then supplying power to the household alternating current electric appliance or directly connecting the household alternating current electric appliance into a grid-connected network point to transmit redundant electric energy to a power grid. It is understood that the first inverter is further connected to the first lithium ion energy storage battery, and converts the direct current stored by the first lithium ion energy storage battery into alternating current to supply power to the household alternating current electric appliance. The first control module is connected to the fixed solar panel assembly, the first lithium ion energy storage battery, the first charging module and the inverter, and can control the fixed 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 is able to provide daily electricity demand at the residential site and is able to incorporate excess electrical energy into the grid.
In an embodiment of the present application, a mobile energy storage subsystem comprises: the system comprises 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. In particular, the transportation vehicle is a commonly used gasoline or diesel vehicle. The transport vehicle is provided with a carriage which is used for containing a plurality of alternating current electric tools, and the carriage is provided with a plurality of sockets which are used for being connected with the alternating current electric tools in an inserting mode. Specifically, ac power tools include, but are not limited to, commonly used power tools such as a power saw, a hammer, or an electric drill. The movable solar panel assembly is arranged at the top of the carriage and used for converting solar energy into electric energy. The second lithium ion energy storage battery is arranged in the carriage, and is connected to the movable solar panel assembly and used for storing electric energy generated by the movable solar panel assembly. The second charging module is arranged in the carriage, connected to the movable solar panel assembly and the second lithium ion energy storage battery and used for controlling the charging of the second lithium ion energy storage battery. The second inverter is connected to the second lithium ion energy storage battery and is used for converting direct current stored by the second lithium ion energy storage battery into alternating current and supplying power for the alternating current electric tool. 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.
When the transport vehicle is parked beside the house, the mobile energy storage subsystem is electrically connected to the stationary energy storage subsystem by a cable. At this time, the first inverter is connected to the mobile solar panel assembly. During non-working days, the movable energy storage subsystem and the fixed energy storage subsystem form a complete photovoltaic system, and the inverter not only converts direct current generated by the fixed solar panel assembly into alternating current and then is connected to grid-connected network points, but also converts direct current generated by the movable solar panel assembly into alternating current and then is connected to grid-connected network points to be transmitted to a power grid.
In the embodiment of the application, the first charging module can control the charge and discharge between the first lithium ion energy storage battery and the second lithium ion energy storage battery to adjust the electric quantity of the first lithium ion energy storage battery. Specifically, the first control module can adjust the pre-stored electric quantity of the second lithium ion energy storage battery according to the working demand electric quantity of the alternating current electric tool required to be used next day and the weather condition of next day. When the movable energy storage subsystem is required to be moved to a workplace for operation on the next day, the first charging module can judge how much electric quantity is prestored in the second lithium ion energy storage battery according to the working demand electric quantity on the next day and the weather condition on the next day, so that the working demand can be met, and meanwhile, the situation that the second lithium ion energy storage battery cannot continuously store the electric energy converted by the movable solar panel assembly due to full electric quantity is avoided.
As a preferred embodiment, the cloud server calculates the estimated power generation amount of the mobile solar panel assembly on the next day according to the weather condition on the next day. Specifically, by acquiring the weather forecast of the current area in advance, the weather data of the next day, such as the sunshine condition, can be accurately acquired. According to the sunlight data, the total power generation amount of the mobile solar panel assembly in the day of the next day, namely the estimated power generation amount, can be accurately calculated.
It can be understood that, assuming that the second lithium ion energy storage battery has less pre-stored electric quantity in the previous day and larger workload in the next day, the total consumed electric quantity cannot be met by adding the pre-stored electric quantity to the electric energy converted by the movable solar panel assembly, which causes the situation that the work cannot be completed. Similarly, assuming that the pre-stored electric quantity of the second lithium ion energy storage battery in the previous day is larger, but the workload in the next day is smaller, the situation that the second lithium ion energy storage battery cannot continue to store electric energy after being full may occur to cause electric energy waste.
Therefore, in order to avoid the occurrence of the above situation, in the present application, the first control module controls the pre-stored electric quantity of the second lithium ion energy storage battery, so that the sum of the estimated generated energy and the pre-stored electric quantity is greater than the electric quantity required by work, and the electric quantity is not enough, and the work cannot be completed. Meanwhile, the difference between the sum of the expected generated energy and the pre-stored electric quantity of the second lithium ion energy storage battery and the electric quantity required by work is smaller than the total capacity of the second lithium ion energy storage battery, so that the situation that the pre-stored electric quantity is overlarge and the second lithium ion energy storage battery is full of electric energy converted by the movable solar panel assembly and cannot continue to store the electric energy is avoided.
As a preferred embodiment, the household energy storage and management system further comprises 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 connected to the cloud server in a wireless mode. The cloud server obtains the weather conditions of the next day through a networking mode. The first control module is connected to the cloud server in a wireless mode, and the cloud server controls the first control module to adjust the pre-stored electric quantity of the second lithium ion energy storage battery according to the working demand electric quantity and weather conditions of the alternating current electric tool in the next day. And sending the working required electric quantity of the alternating current electric tool on the next day to the cloud server through the intelligent mobile terminal. Specifically, the intelligent mobile terminal can be a mobile phone or a smart tablet.
As a preferred embodiment, the intelligent mobile terminal registers the model of the ac electric tool to the cloud server, the intelligent mobile terminal sends the using time of the corresponding ac electric tool needed to be used next day to the cloud server, the cloud server matches the corresponding power consumption efficiency according to the model of the ac electric tool, and calculates the total work demand power according to the corresponding work time and the power consumption efficiency.
Specifically, the work required power amount is determined by the work time period of the ac power tool that needs to be used the next day. The user needs to estimate the operation time of the alternating current electric tool, and then roughly judges the required electricity consumption. However, the energy consumption efficiency of different work tools is different when they are operated. In order to improve accuracy of estimation of work required electric quantity, an existing alternating current electric tool is registered in a cloud server. The cloud server stores power consumption efficiency corresponding to each type of alternating current power tool. Therefore, the user only needs to input the working time of the alternating current electric tool needed in the next day through the intelligent mobile terminal, and the cloud server can calculate the total working demand electric quantity. It can be understood that, generally, in order to ensure that the electric quantity of the second lithium ion energy storage battery can meet the working requirement of the next day, when the user estimates the working time of the working tool, the predicted value can be increased as appropriate, and a certain margin is reserved.
And when the sum of the expected generated energy and the pre-stored electric quantity is smaller than the electric quantity required by the work, the pre-stored electric quantity is in a full state of the second lithium ion energy storage battery. In some cases, the next day of work is very heavy, and even if the second lithium ion energy storage battery stores 100% of the electric quantity in advance, and the next day of generated energy is added, the working requirement cannot be met.
As a preferred embodiment, the intelligent mobile terminal is used for sending the working place to the cloud server, the cloud server automatically calculates a working starting time point according to the working place and the address, and the cloud server calculates a first expected generated energy of the mobile solar panel assembly before the working starting time point according to the weather condition of the next day, wherein the maximum value of the pre-stored electric energy is smaller than the difference value between the total capacity of the second lithium ion energy storage battery and the first expected generated energy.
It will be appreciated that on the weekday, it takes a certain time to drive the transport vehicle to the work site until the work is actually started (assuming that the work start time point is 10 points). However, mobile solar panel assemblies have begun to convert electrical energy prior to the user's actual operation. Assuming that the pre-stored power of the second lithium ion energy storage battery is set to 100%, the power converted by the mobile solar panel assembly before the user actually works is completely wasted. Therefore, in order to avoid such a situation, the cloud server can calculate a rough work start time point from the user's departure time (typically set to 8 points) and the vehicle travel time after uploading the work place by the user. After the work start time point is calculated. The cloud server calculates a first expected power generation amount of the mobile solar panel assembly before the working starting time point according to the weather condition of the next day. To avoid wasting the first expected amount of power generation, the second lithium ion energy storage battery needs to retain the ability to store this portion of the power. Specifically, the maximum value of the pre-stored electric quantity is smaller than the difference between the total capacity of the second lithium ion energy storage battery and the first expected electric quantity. In this way, the generated first estimated power generation amount can be stored entirely in the second lithium ion energy storage battery.
As a preferred embodiment, when the work on the day is completed, an end signal and the work required electric quantity on the next day are sent to the cloud server through the intelligent mobile terminal. The cloud server obtains the current actual electric quantity of the second lithium ion energy storage battery, the cloud server calculates new pre-stored electric quantity according to the working demand electric quantity of the next day and weather conditions, when the new pre-stored electric quantity is larger than the current actual electric quantity 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 (namely, other electric devices cannot use the electric energy), when the new pre-stored electric quantity is smaller than the current actual electric quantity 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 (namely, the first lithium ion energy storage battery always needs to keep the electric energy storage space of the part at least).
It will be appreciated that after the vehicle is driven back to the residential site and is connected to the stationary energy storage subsystem after the job is completed, the cloud server needs to determine whether to charge the second lithium ion energy storage battery by the first lithium ion energy storage battery or to charge the first lithium ion energy storage battery by the second lithium ion energy storage battery according to the next day of workload and weather conditions of the mobile energy storage system. If the second lithium ion energy storage battery needs to be charged through the first lithium ion energy storage battery, the first lithium ion energy storage battery of the fixed energy storage subsystem needs to reserve the electric quantity of the part in advance. If the first lithium ion energy storage battery needs to be charged through the second lithium ion energy storage battery, the first lithium ion energy storage battery of the fixed energy storage subsystem needs to reserve the corresponding electric quantity storage space for storing the part in advance. Whether the first lithium ion energy storage battery is controlled to reserve electric quantity or storage space in advance, the requirement is preferably known in advance, and the regulation and control are facilitated. Because the vehicle typically travels back to the residential site after the job is completed, the stationary solar panel assembly may not have been able to generate electrical power. At this time, if the electric energy of the first lithium ion energy storage battery is smaller, the energy compensation of the second lithium ion energy storage battery may not be satisfied. Meanwhile, if the electric energy of the first lithium ion energy storage battery is higher, there may not be enough storage space to receive the electric energy returned by the second lithium ion energy storage battery.
As a preferred embodiment, the cloud server calculates a second estimated power generation amount after the ending time point according to the ending time point and the weather condition of the day, when the new pre-stored power is greater than the sum of the current actual power and the second estimated power generation amount 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, and when the new pre-stored power is less than the sum of the current actual power and the second estimated power generation amount of the second 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.
It can be understood that when the end signal is sent to the cloud server by the intelligent mobile terminal, the remaining power of the second lithium ion energy storage battery acquired by the cloud server is a value at the end time point of the received signal. However, the mobile solar panel assembly is still continuously generating electrical energy during the vehicle's return. The earlier the point in time the operation is ended, the more electrical energy is produced during this time, which is not negligible. Therefore, in order to improve the accuracy of calculation of the new pre-stored electric quantity, the cloud server calculates a second estimated electric quantity after the ending time point according to the ending time point and the weather condition of the next day, and sums the second estimated electric quantity and the current actual electric quantity of the second lithium ion energy storage battery to be used as the final actual electric quantity of the second lithium ion energy storage battery. And comparing the final actual electric quantity with the calculated new pre-stored electric quantity to judge whether the second lithium ion energy storage battery is charged by the first lithium ion energy storage battery or the first lithium ion energy storage battery is charged by the second lithium ion energy storage battery.
As a preferred embodiment, the stationary energy storage subsystem further comprises: and the electricity consumption statistics module.
In particular, the electricity usage statistics module is used to count the total electricity usage per day of the household appliances connected to the stationary energy storage subsystem over a last predetermined period. Preferably, the predetermined period is generally selected to be one week. It will be appreciated that the predetermined period may be adjusted as desired and is not intended to be limiting in any way. The electricity consumption statistics module counts the total electricity consumption per day for the last week, and calculates the average electricity consumption per day. The first control module determines a charge retention state of the first lithium ion energy storage battery based on an average of a total amount of power used per day over a predetermined period. Specifically, a plurality of state gears, such as 40%, 50% or 60%, may be set, and it is determined in which of the power storage gears the first lithium ion energy storage battery is to be held, according to the value of the average power consumption.
It can be understood that, when the new pre-stored electric quantity is greater than the current actual electric quantity 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, which means that the corresponding electric energy is additionally stored on the basis of maintaining the electric quantity of the first lithium ion energy storage battery in the electric quantity maintaining state of the corresponding gear.
As a preferred embodiment, the intelligent mobile terminal sends an additional electricity application to the cloud server, and the cloud server controls the first control module to increase the electric quantity of the first lithium ion energy storage battery from the electric quantity maintaining state to the target state according to the electric quantity value applied by the additional electricity application after receiving the additional electricity application.
It will be appreciated that in some special cases, it is temporarily necessary to supplement some electrical consumers with additional (i.e. very often household appliances). If the electric quantity of the first lithium ion energy storage battery is kept in the electric quantity keeping state of the target gear, the requirement may not be satisfied. At this time, an additional electricity application including the required electric quantity may be sent to the cloud server through the intelligent mobile terminal. In this way, the cloud server controls the first control module to increase the electric quantity of the first lithium ion energy storage battery from the electric quantity maintaining state to the target state according to the electric quantity value applied by the additional power application after receiving the additional power application. The power value corresponding to the target state is the power value corresponding to the current power holding state plus the power value of the additional application.
It can be understood that the precondition of the first control module for controlling the first lithium ion energy storage battery is: when energy replenishment is required, the stationary solar panel assembly is undergoing energy conversion to generate electrical energy. If the fixed solar panel assembly is in a state of non-electricity generation (such as at night), relevant control is performed when the fixed solar panel assembly starts to perform electricity conversion.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the invention in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the invention.

Claims (10)

1. A household energy storage and management system, comprising: a stationary energy storage subsystem and a mobile energy storage subsystem selectively electrically connected to or disconnected from the stationary energy storage subsystem;
the stationary energy storage subsystem includes:
a stationary solar panel assembly, secured to a roof of a house, for converting solar energy into electrical energy;
a first lithium ion energy storage battery connected to the stationary solar panel assembly for storing electrical energy generated by the stationary 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 for controlling the charging of the first lithium ion energy storage battery;
the first inverter is connected to the fixed solar panel assembly and is used for converting direct current generated by the fixed solar panel assembly into alternating current and then supplying power to a household alternating current appliance or connecting the household alternating current appliance into a grid-connected network to be transmitted to a power grid;
a first control module connected to the stationary solar panel assembly, the first lithium ion energy storage battery, the first charging module, and the inverter to control the stationary solar panel assembly, the first lithium ion energy storage battery, the first charging module, and the first inverter;
the mobile energy storage subsystem includes:
the transport vehicle is provided with a carriage which is used for accommodating a plurality of alternating current electric tools, and a plurality of sockets which are used for being inserted into the alternating current electric tools;
the movable solar panel assembly is arranged at the top of the carriage and is used for converting solar energy into electric energy;
the second lithium ion energy storage battery is arranged in the carriage and connected to the movable solar panel assembly for storing electric energy generated by the movable solar panel assembly;
the second charging module is arranged in the carriage and connected to the movable solar panel assembly and the second lithium ion energy storage battery, and is used for controlling the charging of the second lithium ion energy storage battery;
the second inverter is connected to the second lithium ion energy storage battery and is used for converting direct current stored by the second lithium ion energy storage battery into alternating current and supplying power for the alternating current electric 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 beside a house, the movable energy storage subsystem is electrically connected to the fixed energy storage subsystem through a cable, and at the moment, the first inverter is also connected to the movable solar panel assembly and is used for converting direct current generated by the movable solar panel assembly into alternating current and then connecting the alternating current into grid-connected network points to be transmitted to a power grid;
the first charging module can also control the charge and discharge between the first lithium ion energy storage battery and the second lithium ion energy storage battery so as to adjust the electric quantity of the second lithium ion energy storage battery, and the first control module can adjust the pre-stored electric quantity of the second lithium ion energy storage battery according to the working demand electric quantity of the alternating current electric tool required to be used in the next day and the weather condition of the next day.
2. The domestic energy storage and management system of claim 1, wherein,
the household energy storage and management system further comprises a cloud server, and the fixed energy storage subsystem and the mobile energy storage subsystem are both connected to the cloud server in a wireless mode;
the cloud server obtains the weather condition of the next day through a networking mode, the first control module is connected to the cloud server in a wireless mode, and the cloud server controls the first control module to adjust the pre-stored electric quantity of the second lithium ion energy storage battery according to the working demand electric quantity and the weather condition of the alternating current electric tool of the next day.
3. The household energy storage and management system of claim 2, wherein,
the household energy storage and energy management system further comprises an intelligent mobile terminal, and the working demand electric quantity of the alternating current electric tool in the next day is sent to the cloud server through the intelligent mobile terminal.
4. A household energy storage and management system as claimed in claim 3, wherein,
registering the model of the alternating current electric tool with the cloud server through the intelligent mobile terminal, sending the using time of the corresponding alternating current electric tool required to be used next day to the cloud server through the intelligent mobile terminal, and calculating the total work required electric quantity according to the corresponding working time and the power consumption efficiency by the cloud server according to the matching of the model of the alternating current electric tool and the corresponding power consumption efficiency.
5. The household energy storage and management system of claim 2, wherein,
the cloud server calculates estimated power generation amount of the mobile solar panel assembly in the next day according to the weather condition of the next day, the sum of the estimated power generation amount and the pre-stored power amount is larger than the working demand power amount, the difference value between the sum of the estimated power generation amount and the pre-stored power amount of the second lithium ion energy storage battery and the working demand power amount is smaller than the total capacity of the second lithium ion energy storage battery, and when the sum of the estimated power generation amount and the pre-stored power amount is smaller than the working demand power amount, the pre-stored power amount is the full power state of the second lithium ion energy storage battery.
6. The domestic energy storage and management system of claim 5, wherein the system comprises a plurality of energy storage devices,
the intelligent mobile terminal sends a working place to the cloud server, the cloud server automatically calculates a working starting time point according to the working place and an address, the cloud server calculates a first expected generated energy of the mobile solar panel assembly before the working starting time point according to the weather condition of the next day, and the maximum value of the pre-stored electric energy is smaller than the difference value between the total capacity of the second lithium ion energy storage battery and the first expected generated energy.
7. The domestic energy storage and management system of claim 6, wherein,
when the work on the day is completed, an end signal and the working demand electric quantity on the next day are sent to the cloud server through the intelligent mobile terminal, the cloud server obtains the current actual electric quantity of the second lithium ion energy storage battery, the cloud server calculates new pre-stored electric quantity according to the working demand electric quantity on the next day and weather conditions, when the new pre-stored electric quantity is larger than the current actual electric quantity 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, and when the new pre-stored electric quantity is smaller than the current actual electric quantity 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.
8. The domestic energy storage and management system of claim 7, wherein,
the cloud server calculates a second expected power generation amount after the ending time point according to the ending time point and the weather condition of the next day, when the new pre-stored power is larger than the sum of the current actual power of the second lithium ion energy storage battery and the second expected power generation amount, the cloud server controls the first control module to lock the power corresponding to the first lithium ion energy storage battery, and when the new pre-stored power is smaller than the sum of the current actual power of the second lithium ion energy storage battery and the second expected power generation amount, the cloud server controls the first control module to lock the power storage space corresponding to the first lithium ion energy storage battery.
9. A household energy storage and management system as claimed in claim 3, wherein,
the stationary energy storage subsystem further comprises:
the power consumption statistics module is used for counting total power consumption of household appliances connected to the fixed energy storage subsystem in a day in a latest preset period, and the first control module determines the power holding state of the first lithium ion energy storage battery according to the average value of the total power consumption in the day in the preset period and maintains the power of the first lithium ion energy storage battery in the power holding state.
10. The domestic energy storage and management system of claim 9, wherein,
the intelligent mobile terminal sends an additional electricity application to the cloud server, and the cloud server controls the first control module to lift the electric quantity of the first lithium ion energy storage battery from an electric quantity holding state to a target state according to the electric quantity value applied by the additional electricity application after receiving the additional electricity application.
CN202311183565.3A 2023-09-13 2023-09-13 Household energy storage and energy management system Pending CN117293875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311183565.3A CN117293875A (en) 2023-09-13 2023-09-13 Household energy storage and energy management system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311183565.3A CN117293875A (en) 2023-09-13 2023-09-13 Household energy storage and energy management system

Publications (1)

Publication Number Publication Date
CN117293875A true CN117293875A (en) 2023-12-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311183565.3A Pending CN117293875A (en) 2023-09-13 2023-09-13 Household energy storage and energy management system

Country Status (1)

Country Link
CN (1) CN117293875A (en)

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