CN117394498A - Charging control method and device for household light charging energy storage system - Google Patents

Charging control method and device for household light charging energy storage system Download PDF

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Publication number
CN117394498A
CN117394498A CN202311529392.6A CN202311529392A CN117394498A CN 117394498 A CN117394498 A CN 117394498A CN 202311529392 A CN202311529392 A CN 202311529392A CN 117394498 A CN117394498 A CN 117394498A
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China
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power
energy storage
charging
output
photovoltaic module
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钟小军
刘文明
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Guangzhou Allpowers Energy Technology Co ltd
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Guangzhou Allpowers Energy Technology Co ltd
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Priority to CN202311529392.6A priority Critical patent/CN117394498A/en
Publication of CN117394498A publication Critical patent/CN117394498A/en
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    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • 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
    • 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
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002—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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/40—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries adapted for charging from various sources, e.g. AC, DC or multivoltage
    • 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
    • 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

Abstract

The invention discloses a charging control method and a device for a household light charging energy storage system, wherein the method comprises the following steps: when the residual electric quantity of the energy storage equipment is lower than the electric quantity critical value, acquiring a current time node; if the current time node is in the daytime time interval, detecting the maximum power of the photovoltaic module, and starting the photovoltaic module in real time to output the first power according to the comparison result of the maximum power and the rated charging power of the energy storage equipment; and if the current time node is in the night time interval, starting the thermoelectric generator and accessing the power grid, and controlling the thermoelectric generator to output second power generation power and the power grid to output power generation power of the power grid. According to the method and the device, when the electric quantity of the energy storage device is low, the time interval is determined according to the current time node, and the charging device to be called is determined and power adjustment is performed based on different time intervals, so that the charging efficiency is improved and the charging cost is reduced under the condition that the energy storage device is prevented from being overcharged or charged too fast.

Description

Charging control method and device for household light charging energy storage system
Technical Field
The invention relates to the technical field of energy storage system control, in particular to a charging control method and device of a household light charging energy storage system.
Background
The household light charging energy storage system is a novel energy storage device, and can store renewable energy for household use. The system generally comprises a photovoltaic module, energy storage equipment, an inverter, a monitoring system and other equipment, and the household can be helped to store and optimally use electric energy through the cooperative work of the equipment.
When the photovoltaic module is used for charging and discharging the energy storage equipment, the method commonly used at present is as follows: detecting the residual electric quantity of the energy storage device in real time, if the residual electric quantity is smaller than a critical value, starting the photovoltaic module and connecting with a power grid, and charging the energy storage device through the photovoltaic module and the power grid at the same time; after full charge, the photovoltaic module supplies power to the power grid.
However, the current common methods have the following technical problems: when charging, the photovoltaic module generates different power in different time periods, so that the photovoltaic module can generate larger power in the daytime, generate smaller power at night, and generate different power in sunny days or cloudy days in the daytime. The power change may cause the energy storage device to be overcharged or charged too quickly, and thus electrical failure may occur easily, so that the energy storage device is burned out.
Disclosure of Invention
The invention provides a charging control method and a charging control device for a household light charging energy storage system, wherein the method can adjust the charging power according to different time nodes so as to avoid the situation that the energy storage equipment is overcharged or is overcharged too fast.
A first aspect of an embodiment of the present invention provides a charging control method for a household optical charging energy storage system, where the method includes:
when the residual electric quantity of the energy storage equipment is lower than the electric quantity critical value, acquiring a current time node;
if the current time node is in the daytime time interval, detecting the maximum power of the photovoltaic module, and starting the photovoltaic module in real time to output the first power according to the comparison result of the maximum power and the rated charging power of the energy storage equipment so as to charge the energy storage equipment by the photovoltaic module;
and if the current time node is in the night time interval, starting the thermoelectric generator and accessing the power grid, and controlling the thermoelectric generator to output second power generation power and the power grid to output power generation power of the power grid so as to enable the thermoelectric generator and the power grid to charge the energy storage equipment at the same time.
In a possible implementation manner of the first aspect, the step of starting the photovoltaic module in real time to output the first generated power according to a comparison result of the maximum generated power and the rated charging power of the energy storage device includes:
If the maximum power is larger than the rated charging power of the energy storage equipment, acquiring the power of each photovoltaic solar panel of the photovoltaic module to obtain panel power;
calculating a start-up quantity value by using the rated charge power and the board power generation power;
and starting a corresponding number of photovoltaic solar panels according to the starting quantity value so as to output corresponding first power.
In a possible implementation manner of the first aspect, the step of starting the photovoltaic module in real time to output the first generated power according to a comparison result of the maximum generated power and the rated charging power of the energy storage device includes:
if the maximum power is smaller than the rated charging power of the energy storage equipment, a first real-time node and a sunset time node are respectively obtained, and the photovoltaic charging duration of the photovoltaic module is calculated by using the first real-time node and the sunset time node; calculating a chargeable capacity by using the photovoltaic charging duration and the maximum generated power;
if the chargeable capacity is larger than or equal to the charging demand capacity of the energy storage device, starting the photovoltaic module and outputting the photovoltaic module according to the maximum generated power to obtain first generated power, wherein the charging demand capacity is an electric quantity difference value between the full capacity and the residual electric quantity of the energy storage device;
If the chargeable capacity is smaller than the charging demand capacity of the energy storage equipment, acquiring a current temperature value of the photovoltaic module, and when the current temperature value is not in a preset temperature value range, adjusting the working temperature of the photovoltaic module according to a temperature supplementing control method so as to output corresponding first power generation.
In a possible implementation manner of the first aspect, the controlling the thermoelectric generator to output the second generated power and the grid to output the grid generated power includes:
the method comprises the steps of respectively obtaining the electricity consumption demand of a user and obtaining a temperature difference value, wherein the temperature difference value is the difference value between the temperature of a photovoltaic solar panel of a photovoltaic module and the ambient temperature;
if the electricity consumption demand is greater than the residual electric quantity and the temperature difference is within a preset temperature difference range, starting a thermoelectric generator to output second power generation according to the temperature difference;
calculating a power difference value between the second generated power and rated charging power of the energy storage device;
and controlling the power grid to output the power generated by the power grid according to the power difference value.
In a possible implementation manner of the first aspect, the controlling the thermoelectric generator to output the second generated power and the grid to output the grid generated power further includes:
And if the electricity consumption demand is greater than the residual electric quantity and the temperature difference is smaller than the minimum value of the preset temperature difference range, outputting the power generation power of the power grid according to the control power grid of the rated charging power of the energy storage equipment.
In a possible implementation manner of the first aspect, the controlling the thermoelectric generator to output the second generated power and the grid to output the grid generated power further includes:
and if the electricity consumption demand is smaller than the residual electric quantity and the temperature difference is within a preset temperature difference range, independently starting the electric generator to output second power generation according to the temperature difference.
In a possible implementation manner of the first aspect, after the step of charging the energy storage device by the photovoltaic module or simultaneously charging the energy storage device by the thermoelectric generator and the power grid, the method further includes:
and acquiring the electric quantity information of the energy storage equipment in real time, and transmitting the electric quantity information to a preset user terminal for the user to check.
A second aspect of an embodiment of the present invention provides a charging control device of a household optical charging energy storage system, the device including:
the time acquisition module is used for acquiring a current time node when the residual electric quantity of the energy storage device is determined to be lower than an electric quantity critical value; the daytime charging module is used for detecting the maximum power of the photovoltaic module if the current time node is in the daytime time interval, and starting the photovoltaic module in real time to output the first power according to the comparison result of the maximum power and the rated charging power of the energy storage equipment so as to charge the energy storage equipment by the photovoltaic module;
And the night charging module is used for starting the thermoelectric generator and connecting the thermoelectric generator to the power grid if the current time node is in the night time interval, and controlling the thermoelectric generator to output second power generation power and the power grid to output power generation power of the power grid so as to charge the energy storage equipment simultaneously by the thermoelectric generator and the power grid.
In a possible implementation manner of the second aspect, the daytime charging module is further configured to:
if the maximum power is larger than the rated charging power of the energy storage equipment, acquiring the power of each photovoltaic solar panel of the photovoltaic module to obtain panel power;
calculating a start-up quantity value by using the rated charge power and the board power generation power;
and starting a corresponding number of photovoltaic solar panels according to the starting quantity value so as to output corresponding first power.
In a possible implementation manner of the second aspect, the daytime charging module is further configured to:
if the maximum power is smaller than the rated charging power of the energy storage equipment, a first real-time node and a sunset time node are respectively obtained, and the photovoltaic charging duration of the photovoltaic module is calculated by using the first real-time node and the sunset time node; calculating a chargeable capacity by using the photovoltaic charging duration and the maximum generated power;
If the chargeable capacity is larger than or equal to the charging demand capacity of the energy storage device, starting the photovoltaic module and outputting the photovoltaic module according to the maximum generated power to obtain first generated power, wherein the charging demand capacity is an electric quantity difference value between the full capacity and the residual electric quantity of the energy storage device;
if the chargeable capacity is smaller than the charging demand capacity of the energy storage equipment, acquiring a current temperature value of the photovoltaic module, and when the current temperature value is not in a preset temperature value range, adjusting the working temperature of the photovoltaic module according to a temperature supplementing control method so as to output corresponding first power generation.
In a possible implementation manner of the second aspect, the night charging module is further configured to:
the method comprises the steps of respectively obtaining the electricity consumption demand of a user and obtaining a temperature difference value, wherein the temperature difference value is the difference value between the temperature of a photovoltaic solar panel of a photovoltaic module and the ambient temperature;
if the electricity consumption demand is greater than the residual electric quantity and the temperature difference is within a preset temperature difference range, starting a thermoelectric generator to output second power generation according to the temperature difference;
calculating a power difference value between the second generated power and rated charging power of the energy storage device;
And controlling the power grid to output the power generated by the power grid according to the power difference value.
In a possible implementation manner of the second aspect, the night charging module is further configured to:
and if the electricity consumption demand is greater than the residual electric quantity and the temperature difference is smaller than the minimum value of the preset temperature difference range, outputting the power generation power of the power grid according to the control power grid of the rated charging power of the energy storage equipment.
In a possible implementation manner of the second aspect, the night charging module is further configured to:
and if the electricity consumption demand is smaller than the residual electric quantity and the temperature difference is within a preset temperature difference range, independently starting the electric generator to output second power generation according to the temperature difference.
In a possible implementation manner of the second aspect, after the step of charging the energy storage device by the photovoltaic module or simultaneously charging the energy storage device by the thermoelectric generator and the power grid, the apparatus further includes:
the power information feedback module is used for acquiring power information of the energy storage device in real time and transmitting the power information to a preset user terminal for a user to check.
Compared with the prior art, the charging control method and device for the household light charging energy storage system provided by the embodiment of the invention have the beneficial effects that: according to the method and the device, when the electric quantity of the energy storage equipment is low, the current time node can be obtained in real time, the time interval of the energy storage equipment is determined according to the current time node, the charging equipment to be called is determined based on different time intervals, and power adjustment is carried out, so that under the condition that the energy storage equipment is prevented from being overcharged or is overcharged too fast, the charging efficiency is improved, and the charging cost is reduced.
Drawings
Fig. 1 is a flow chart of a charging control method of a household optical charging energy storage system according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a household light-charging energy storage system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a charging control device of a household optical charging energy storage system according to an embodiment of the 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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the above-mentioned problems, a charging control method of a household optical charging energy storage system provided in the embodiment of the present application will be described and illustrated in detail by the following specific embodiments.
Referring to fig. 1, a flow chart of a charging control method of a household optical charging energy storage system according to an embodiment of the invention is shown.
In one embodiment, the method is applicable to a monitoring system for a household photovoltaic charged energy storage system that can be communicatively coupled to a photovoltaic module, an energy storage device, and an inverter.
Referring to fig. 2, a schematic structural diagram of a household photo-charging energy storage system according to an embodiment of the present invention is shown.
In an embodiment, the energy storage device may be a battery pack, and the photovoltaic module may be connected to the dc bus through the photovoltaic controller, and then connected to the battery pack through the dc bus. Similarly, the load can be connected to the direct current bus through the bidirectional converter, and then is connected with the storage battery through the direct current bus. And the power grid equipment can also be connected to the direct current bus through the bidirectional converter, and then connected with the storage battery pack through the direct current bus.
The monitoring system can be directly connected with the storage battery pack, and the state of the storage battery pack is detected, and then the photovoltaic controller or the bidirectional converter is controlled to start to work so as to enable the photovoltaic module or the power grid to charge the storage battery pack.
As an example, the charging control method of the household light charging energy storage system may include:
and S11, acquiring a current time node when the residual electric quantity of the energy storage device is lower than the electric quantity critical value.
In an embodiment, the electric quantity value of the energy storage device can be detected in real time to obtain a residual electric quantity value, then whether the residual electric quantity of the energy storage device is smaller than an electric quantity critical value is judged, if yes, the fact that the residual electric quantity of the energy storage device is lower is indicated, and the energy storage device needs to be charged. Because the photovoltaic module has higher power generation power in the environment with abundant sunlight in the daytime, the current time node can be obtained, and the current time is determined through the current time node, so that the output power of the photovoltaic module or a power grid is controlled again according to the current time to charge the storage battery.
In an embodiment, the storage battery used by the energy storage device may be a battery pack with a parallel structure, which is obtained by connecting a plurality of batteries in parallel.
Wherein, as an example, the remaining power of the energy storage device may comprise the following sub-steps:
and S111, obtaining the residual available electric quantity of each battery pack to obtain a plurality of residual available electric quantities.
And S112, eliminating the maximum value and the minimum value from the plurality of residual available electric quantities to obtain a plurality of residual available electric quantities, and obtaining rated capacities corresponding to each residual available electric quantity to obtain a plurality of rated capacities.
S113, calculating the remaining available average electric quantity by adopting a plurality of remaining available electric quantities and calculating the rated average capacity by adopting a plurality of rated capacities;
And S114, calculating the ratio of the remaining available average electric quantity to the rated average electric quantity to obtain the remaining electric quantity.
The residual available electric quantity is obtained through screening, so that the residual electric quantity of the energy storage device can be accurately calculated, and the calculation error is reduced.
And S12, if the current time node is in the daytime time interval, detecting the maximum power of the photovoltaic module, and starting the photovoltaic module in real time to output the first power according to the comparison result of the maximum power and the rated charging power of the energy storage equipment so as to charge the energy storage equipment by the photovoltaic module.
In one embodiment, it may be determined when the energy storage device is low in power based on the current time node.
Alternatively, 6 may be provided: 00-18:00 is the daytime time interval, 18: 00-6 on the second day: 00 is a night time interval.
If the current time node is at 6:00-18:00, the current time is within the daytime time interval. At this time, the maximum power of the photovoltaic module can be detected, and the maximum power is the optimal output power of the photovoltaic module under the conditions that all photovoltaic solar panels are started and the temperature of the working environment is the optimal temperature. Similarly, the rated charging power of the energy storage device can be obtained, and the rated charging power is the maximum charging input power of the energy storage device.
The maximum generated power and the rated charging power of the energy storage device can be compared, and the first generated power output by the photovoltaic module is started and regulated in real time according to the comparison result of the maximum generated power and the rated charging power of the energy storage device, so that the photovoltaic module charges the energy storage device.
For example, if the maximum generated power is greater than the rated charge power of the energy storage device, the power output by the photovoltaic module may be reduced; conversely, if the maximum generated power is less than the rated charging power of the energy storage device, additional auxiliary charging of the energy storage device is required, so that the energy storage device can be rapidly charged.
In an alternative embodiment, if the maximum generated power is greater than the rated charging power of the energy storage device, it is indicated that the generated power of the photovoltaic module is greater, and if the energy storage device is charged with the greater generated power, the energy storage device may be burned. To avoid this, the energy storage device may be charged within the range of rated charging power, wherein, as an example, step S12 may comprise the following sub-steps:
and S21, if the maximum generated power is larger than the rated charging power of the energy storage equipment, acquiring the generated power of each photovoltaic solar panel of the photovoltaic module, and obtaining the panel generated power.
S22, calculating a starting quantity value by using the rated charging power and the board power generation power.
S23, starting a corresponding number of photovoltaic solar panels according to the starting quantity value so as to output corresponding first power.
Specifically, if the maximum generated power is greater than the rated charging power of the energy storage device, it indicates that the generated power of the photovoltaic module is greater, and the generated power of the photovoltaic module needs to be properly reduced.
In one implementation, the power generated by the photovoltaic module is related to the number of photovoltaic solar panels that are activated, and if all of the photovoltaic solar panels are activated, their maximum power generated may be reached, and if some are activated, their power generated may be reduced.
When the maximum generated power of the photovoltaic module is larger than the rated charging power of the energy storage equipment, in order to avoid the energy storage equipment from being broken down or damaged due to the fact that the energy storage equipment is charged by the maximum generated power, the number of photovoltaic solar panels to be started can be adjusted according to the rated charging power of the energy storage equipment, and then the photovoltaic module can charge the energy storage equipment under the most appropriate power of the energy storage equipment.
Specifically, the power generated by each photovoltaic solar panel of the photovoltaic module can be obtained, and the panel power is obtained. And then calculating the ratio of the rated charging power to the board power generation power to obtain the solar panel with the maximum starting quantity value.
In an embodiment, if the ratio of the rated charge power to the board power generation power is an integer value, the integer value is taken as the starting number value, and if the ratio of the rated charge power to the board power generation power is not an integer value, for example, 3.8, 5.2, 16.4, or the like. The number preceding the decimal point may be taken as the start number value, for example, the ratio may be 3.8, the start number value may be 3, for example, the ratio may be 16.4, and the start number value may be 16.
And finally, starting a corresponding number of photovoltaic solar panels according to the starting quantity value, so that the photovoltaic module can output corresponding power, and the power is used as first power generation power.
In an application scenario, a portion of the photovoltaic solar panels may fail or environmental factors may exist resulting in lower panel power generation per photovoltaic solar panel. In this case, the first power output by the photovoltaic module is still low after the corresponding number of photovoltaic solar panels is started according to the start-up number value.
In order to adjust the first power generated by the photovoltaic module, in an embodiment, the method may further comprise the sub-steps of:
s24, calculating a difference value between the rated charging power and the first power generation;
S25, if the difference value between the rated charging power and the first power generation power is larger than the board power generation power, calculating the ratio of the difference value between the rated charging power and the first power generation power to the board power generation power to obtain an adjusted value;
s26, starting the corresponding number of photovoltaic solar panels according to the adjustment quantity value so as to improve the first power output by the photovoltaic module.
Specifically, a difference between the rated charge power of the energy storage device and the first power generation output by the current photovoltaic module may be calculated.
And comparing the difference value with the plate power generation power, and if the difference value is larger than the plate power generation power, indicating that the first power generation power is smaller than the rated charging power and the charging requirement of the energy storage equipment is not met. The ratio of the difference to the board generated power can be calculated. Similarly, if the ratio is an integer value, the integer value is taken as the adjustment value, and if the ratio is not an integer value, the number preceding the decimal point is taken as the adjustment value.
And finally, starting a corresponding number of photovoltaic solar panels according to the adjusted number value, so that the first power output by the photovoltaic module can be improved to meet the charging requirement of the energy storage equipment.
It should be noted that, if the difference between the rated charging power and the first power is a negative value, it indicates that the first power is greater than the rated charging power and possibly exceeds the rated charging power of the energy storage device, in order to avoid burnout, the ratio of the difference between the rated charging power and the first power to the board power may also be calculated to obtain an adjusted value; and finally, closing the corresponding number of photovoltaic solar panels according to the adjusted number value to reduce the first power output by the photovoltaic module, so that the rated charging power is matched with the first power.
In an alternative embodiment, if the maximum generated power is smaller than the rated charging power of the energy storage device, it indicates that the rated charging power of the energy storage device is larger, the generated power of the photovoltaic module is smaller, and the generated power of the photovoltaic module may not meet the charging requirement of the energy storage device. In order to enable the energy storage device to be charged quickly at rated charging power while using as much photovoltaic modules as possible to reduce the cost of charging, step S12 may comprise the following sub-steps, as an example:
and S31, if the maximum generated power is smaller than the rated charging power of the energy storage equipment, respectively acquiring a first real-time node and a sunset time node, and calculating the photovoltaic charging time of the photovoltaic module by using the first real-time node and the sunset time node.
S32, calculating the chargeable capacity by using the photovoltaic charging duration and the maximum generated power.
And S33, if the chargeable capacity is greater than or equal to the charging demand capacity of the energy storage device, starting the photovoltaic module and outputting the photovoltaic module according to the maximum generated power to obtain the first generated power, wherein the charging demand capacity is the electric quantity difference value between the full capacity and the residual electric quantity of the energy storage device.
And S34, if the chargeable capacity is smaller than the charging demand capacity of the energy storage equipment, acquiring a current temperature value of the photovoltaic module, and when the current temperature value is not in a preset temperature value range, adjusting the working temperature of the photovoltaic module according to a temperature supplementing control method so as to output corresponding first power generation power.
Specifically, if the maximum generated power is smaller than the rated charging power of the energy storage device, it is indicated that the generated power of the photovoltaic module may not meet the charging requirement of the energy storage device, and may also meet the charging requirement of the energy storage device. If the maximum generated power differs significantly from the rated charging power of the energy storage device, the boost power may need to be increased, and if the difference is small, the photovoltaic module may be directly used for charging.
In an implementation manner, when the maximum generated power is smaller than the rated charging power of the energy storage device, a difference value between the maximum generated power and the rated charging power of the energy storage device may be calculated, and if the difference value is within a preset range value, it is indicated that the difference between the maximum generated power and the rated charging power of the energy storage device is smaller, the photovoltaic module may be directly used for charging.
In this case, two time nodes, which are the first real-time node and the sunset time node, respectively, may be acquired. The first real-time node is a current time node, and the sunset time node is a starting time node of a night time interval set by a user. And calculating the photovoltaic charging duration of the photovoltaic module by using the first real-time node and the sunset time node.
Specifically, a difference value between the first real-time node and the sunset time node can be calculated, so as to obtain the photovoltaic charging duration of the photovoltaic module. The photovoltaic charging duration is an optimal charging duration of the photovoltaic module.
The photovoltaic charge duration and the maximum generated power may then be used to calculate a chargeable capacity, which is the charge capacity of the photovoltaic module to the energy storage device.
And then, calculating the electric quantity difference value of the full capacity and the residual electric quantity of the energy storage device to obtain the charging demand capacity of the energy storage device.
If the chargeable capacity is greater than or equal to the charging demand capacity of the energy storage device, the charging process can be completed by starting the photovoltaic module within the photovoltaic charging time period, and the charging demand of the energy storage device can be met without additional access to the charging device or the power of the power grid.
At this time, the photovoltaic module can be started, and meanwhile, the output power of the photovoltaic module can be controlled according to the maximum generated power, so that the first generated power is obtained.
In another application scenario, the possible chargeable capacity is smaller than the charging demand capacity of the energy storage device, which indicates that starting the photovoltaic module within the photovoltaic charging duration cannot complete the charging process. And the chargeable capacity may be due to environmental factors resulting in lower power of the photovoltaic module.
In order to meet the charging requirement of the energy storage device, a current temperature value of the photovoltaic module can be obtained, if the current temperature value is not in a preset temperature value range, the photovoltaic module is indicated to not work under the optimal environment condition, and the working temperature of the photovoltaic module can be adjusted according to the temperature supplementing control method, so that the photovoltaic module outputs corresponding first power.
Because the temperature of the photovoltaic module is increased, the first power output by the photovoltaic module is increased compared with the power in the prior time, and the chargeable capacity of the photovoltaic module is increased under the condition of power increase, so that the photovoltaic module can charge the energy storage device to meet the charging requirement of the energy storage device.
In yet another implementation, if the calculated difference between the maximum generated power and the rated charging power of the energy storage device is not within the preset range value under the condition that the maximum generated power is smaller than the rated charging power of the energy storage device, it may be difficult to directly use the photovoltaic module to charge the energy storage device.
In order to determine whether additional auxiliary equipment is needed for charging, prompt information can be sent to a user, and then the user can charge the energy storage equipment by using the photovoltaic assembly and the power grid simultaneously or without using the photovoltaic assembly and only using the power grid according to whether the prompt information is directly charged by using the photovoltaic assembly.
Finally, the subsequent charging operation may be performed according to the user's selection.
And S13, if the current time node is in the night time interval, starting the thermoelectric generator and accessing the power grid, and controlling the thermoelectric generator to output second power generation power and the power grid to output power generation power of the power grid so as to enable the thermoelectric generator and the power grid to charge the energy storage equipment at the same time.
In one embodiment, the night time interval may refer to the example above, 18: 00-6 on the second day: 00 may be a night time interval. If the current time node is at 18: 00-6 on the second day: 00, the current time is within the night time interval. At the moment, the generated power of the photovoltaic module is not high, and the photovoltaic module may need to be connected to a power grid, and the energy storage equipment is charged by combining the generated power output by the power grid.
But the cost of charging is high if the output power of the grid is used entirely. In order to reduce the charging costs, in one embodiment, the invention also relates to a thermoelectric generator. The thermoelectric generator is an embedded thermoelectric generator, and meanwhile, a thermoelectric module is arranged on a photovoltaic solar panel of the photovoltaic module, the thermoelectric module can be connected with the thermoelectric generator, and the thermoelectric module can be an insulating material (TEG and a material capable of capturing thermal wavelength) which can absorb the temperature of the photovoltaic solar panel, so that the thermoelectric generator can generate electricity according to the difference value between the temperature of the photovoltaic solar panel and the ambient temperature around the photovoltaic solar panel.
By simultaneously starting the thermoelectric generator and the power grid to charge the energy storage equipment, the charging cost can be further reduced on the basis of meeting the charging requirement of the energy storage equipment.
In an alternative embodiment, the difference between the temperature of the photovoltaic solar panel and the ambient temperature surrounding the photovoltaic solar panel may be large and small. If the temperature difference is large, the output power of the thermoelectric generator is high, otherwise, if the temperature difference is small, the output power of the thermoelectric generator is low, and even the output power cannot be output. In order to adjust the input power of the connected power grid for different temperature differences, the charging cost is reduced. As an example, step S13 may include the following sub-steps:
s131, respectively acquiring the electricity consumption demand of a user and acquiring a temperature difference value, wherein the temperature difference value is a difference value between the temperature of a photovoltaic solar panel of the photovoltaic module and the ambient temperature.
And S132, if the electricity consumption demand is greater than the residual electric quantity and the temperature difference is within a preset temperature difference range, starting the thermoelectric generator to output second power generation according to the temperature difference.
And S133, calculating a power difference value between the second generated power and the rated charging power of the energy storage equipment.
And S134, controlling the power grid to output power generated by the power grid according to the power difference value.
Specifically, the electricity demand and the temperature difference of the user may be acquired, respectively. The temperature difference is the difference between the temperature of the photovoltaic solar panel and the ambient temperature around the photovoltaic solar panel. The electricity consumption demand is an amount of electricity required by a user, and specifically may be an amount of electricity consumption in an interval from a current time node to a start time node of a daytime time interval.
If the electricity consumption demand is larger than the residual electric quantity, the residual electric quantity of the energy storage device is difficult to meet the electricity consumption demand of a user, and the energy storage device needs to be charged; and if the temperature difference is within the preset temperature difference range, the current temperature is indicated to enable the thermoelectric generator to start and output power. The preset temperature difference range is a temperature range in which the thermoelectric generator can start and output corresponding power.
At this time, since the remaining power of the energy storage device is difficult to meet the power demand of the user, the energy storage device needs to be charged to meet the power demand of the user. The thermoelectric generator may be started to output the second power according to the temperature difference. On this basis, since the second generated power output by the thermoelectric generator is generally low, the charging efficiency may be slow, and even the rate of charging may be lower than the electricity utilization rate of the energy storage device.
In order to meet the electricity demand, a power difference value between the second generated power and the rated charging power of the energy storage device can be calculated, and then the generated power of the power grid output power grid is controlled according to the difference value.
Specifically, the power grid is connected with the energy storage device through the direct current bus connected with the bidirectional converter, and the power of the connected power grid can be controlled by controlling the bidirectional converter, so that the power grid outputs corresponding power generation power of the power grid to the energy storage device.
Since the power difference is a difference between the second generated power and the rated charging power of the energy storage device, that is, the sum of the grid generated power and the second generated power is equal to the rated charging power of the energy storage device, the energy storage device can be charged according to the rated charging power, so that the energy storage device can be charged under safe and efficient power.
In one of the embodiments, the electricity demand of the possible user is large, but the temperature difference is small, and it is difficult to start the thermoelectric generator and output the second generated power. In order not to delay the user' S power consumption, step S13 may further comprise the following sub-steps, as an example:
and S135, outputting power generation power of the power grid according to the control power grid of rated charging power of the energy storage equipment if the power consumption demand is greater than the residual electric quantity and the temperature difference is smaller than the minimum value of the preset temperature difference range.
Specifically, if the electricity consumption demand is greater than the residual electricity quantity and the temperature difference is smaller than the minimum value of the preset temperature difference range, the residual electricity quantity of the energy storage device is hard to meet the electricity consumption demand of a user, and the energy storage device needs to be charged; and if the temperature difference is not within the preset temperature difference range, the current temperature is not allowed to start the thermoelectric generator and output power.
At the moment, the power generation power of the power grid can be output according to the control power grid of the rated charging power of the energy storage equipment. The energy storage equipment can be charged by the power grid by controlling the bidirectional converter to control the power of the connected power grid to be rated charging power.
In yet another embodiment, the electric generator may be started and output the second generated power with a smaller demand for electricity by a potential user, but a larger temperature difference. In order to reduce the charging costs, step S13 may further comprise the following sub-steps, as an example:
s136, if the electricity consumption demand is smaller than the residual electric quantity and the temperature difference is within a preset temperature difference range, independently starting the electric generator to output second power generation according to the temperature difference.
Specifically, if the electricity consumption demand is smaller than the residual electric quantity, the residual electric quantity of the energy storage device is indicated to meet the electricity consumption demand of a user, charging is not needed temporarily, and when the time interval between days can be reached, the photovoltaic assembly is used for charging, and a power grid is not required to be called for charging; and, at this time, the temperature difference is within a preset temperature difference range, which means that the thermoelectric generator can be started and output the second generated power.
In order to avoid all electric energy consumption of the energy storage device, the electric generator can be independently started to output second generated power according to the temperature difference, and the energy storage device is charged by using the second generated power.
And when the current time node reaches the daytime time interval, the photovoltaic module is utilized to charge the energy storage equipment.
In yet another embodiment, the electricity demand of the potential user is small, but the temperature difference is also small, and it is difficult to start the thermoelectric generator and output the second generated power. As an example, step S13 may further comprise the sub-steps of:
and S137, sending charging prompt information to the user so as to remind the user.
Specifically, if the electricity consumption requirement of the user is smaller, but the temperature difference is also smaller, the heat supply electric generator is difficult to start and output the second generated power, and the charging prompt information can be directly fed back to the user so as to remind the user whether to charge.
If the user has a demand, a charging instruction can be returned for the system to control the power of the power grid accessed by the bidirectional converter, so that the power grid charges the energy storage equipment.
Otherwise, if there is no demand, the charging-off instruction can be returned to temporarily charge off.
To facilitate the user to know the real-time condition of the power of the energy storage device, the method may further include, as an example:
S14, acquiring electric quantity information of the energy storage device in real time, and transmitting the electric quantity information to a preset user terminal for a user to check.
Specifically, the power information of the energy storage device is obtained in real time, and the power information may include the real-time power of the energy storage device.
And finally, transmitting the electric quantity information to a preset user terminal so that a user can check and know the real-time electric quantity of the energy storage device.
In this embodiment, the embodiment of the present invention provides a charging control method for a household optical charging energy storage system, which has the following beneficial effects: according to the method and the device, when the electric quantity of the energy storage equipment is low, the current time node can be obtained in real time, the time interval of the energy storage equipment is determined according to the current time node, the charging equipment to be called is determined based on different time intervals, and power adjustment is carried out, so that under the condition that the energy storage equipment is prevented from being overcharged or is overcharged too fast, the charging efficiency is improved, and the charging cost is reduced.
The embodiment of the invention also provides a charging control device of the household light charging energy storage system, and referring to fig. 3, a schematic structural diagram of the charging control device of the household light charging energy storage system is shown.
As an example, the charging control device of the household light charging energy storage system may include:
The acquiring time module 301 is configured to acquire a current time node when it is determined that the remaining power of the energy storage device is lower than a power critical value; the daytime charging module 302 is configured to detect a maximum generated power of the photovoltaic module if the current time node is in a daytime time interval, and start the photovoltaic module in real time to output a first generated power according to a comparison result of the maximum generated power and a rated charging power of the energy storage device, so that the photovoltaic module charges the energy storage device;
and the night charging module 303 is configured to start the thermoelectric generator and access the power grid if the current time node is within a night time interval, and control the thermoelectric generator to output the second generated power and the power grid to output the generated power of the power grid, so that the thermoelectric generator and the power grid charge the energy storage device at the same time.
Optionally, the daytime charging module is further configured to:
if the maximum power is larger than the rated charging power of the energy storage equipment, acquiring the power of each photovoltaic solar panel of the photovoltaic module to obtain panel power;
calculating a start-up quantity value by using the rated charge power and the board power generation power;
and starting a corresponding number of photovoltaic solar panels according to the starting quantity value so as to output corresponding first power.
Optionally, the daytime charging module is further configured to:
if the maximum power is smaller than the rated charging power of the energy storage equipment, a first real-time node and a sunset time node are respectively obtained, and the photovoltaic charging duration of the photovoltaic module is calculated by using the first real-time node and the sunset time node; calculating a chargeable capacity by using the photovoltaic charging duration and the maximum generated power;
if the chargeable capacity is larger than or equal to the charging demand capacity of the energy storage device, starting the photovoltaic module and outputting the photovoltaic module according to the maximum generated power to obtain first generated power, wherein the charging demand capacity is an electric quantity difference value between the full capacity and the residual electric quantity of the energy storage device;
if the chargeable capacity is smaller than the charging demand capacity of the energy storage equipment, acquiring a current temperature value of the photovoltaic module, and when the current temperature value is not in a preset temperature value range, adjusting the working temperature of the photovoltaic module according to a temperature supplementing control method so as to output corresponding first power generation.
Optionally, the night charging module is further configured to:
the method comprises the steps of respectively obtaining the electricity consumption demand of a user and obtaining a temperature difference value, wherein the temperature difference value is the difference value between the temperature of a photovoltaic solar panel of a photovoltaic module and the ambient temperature;
If the electricity consumption demand is greater than the residual electric quantity and the temperature difference is within a preset temperature difference range, starting a thermoelectric generator to output second power generation according to the temperature difference;
calculating a power difference value between the second generated power and rated charging power of the energy storage device;
and controlling the power grid to output the power generated by the power grid according to the power difference value.
Optionally, the night charging module is further configured to:
and if the electricity consumption demand is greater than the residual electric quantity and the temperature difference is smaller than the minimum value of the preset temperature difference range, outputting the power generation power of the power grid according to the control power grid of the rated charging power of the energy storage equipment.
Optionally, the night charging module is further configured to:
and if the electricity consumption demand is smaller than the residual electric quantity and the temperature difference is within a preset temperature difference range, independently starting the electric generator to output second power generation according to the temperature difference.
Optionally, the apparatus further comprises:
the power information feedback module is used for acquiring power information of the energy storage device in real time and transmitting the power information to a preset user terminal for a user to check.
It will be clearly understood by those skilled in the art that, for convenience and brevity, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
Further, an embodiment of the present application further provides an electronic device, including: the system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the program to realize the charging control method of the household light charging energy storage system according to the embodiment.
Further, the embodiment of the application also provides a computer readable storage medium, which stores a computer executable program for causing a computer to execute the charging control method of the household optical charging energy storage system according to the embodiment.
It will be appreciated by those skilled in the art that embodiments of the present application may also provide a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), devices and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.

Claims (10)

1. A method of controlling charging of a household light-charged energy storage system, the method comprising:
when the residual electric quantity of the energy storage equipment is lower than the electric quantity critical value, acquiring a current time node;
if the current time node is in the daytime time interval, detecting the maximum power of the photovoltaic module, and starting the photovoltaic module in real time to output the first power according to the comparison result of the maximum power and the rated charging power of the energy storage equipment so as to charge the energy storage equipment by the photovoltaic module;
And if the current time node is in the night time interval, starting the thermoelectric generator and accessing the power grid, and controlling the thermoelectric generator to output second power generation power and the power grid to output power generation power of the power grid so as to enable the thermoelectric generator and the power grid to charge the energy storage equipment at the same time.
2. The method for controlling charging of a household optical charging energy storage system according to claim 1, wherein the step of starting the photovoltaic module in real time to output the first power according to the comparison result of the maximum generated power and the rated charging power of the energy storage device comprises:
if the maximum power is larger than the rated charging power of the energy storage equipment, acquiring the power of each photovoltaic solar panel of the photovoltaic module to obtain panel power;
calculating a start-up quantity value by using the rated charge power and the board power generation power;
and starting a corresponding number of photovoltaic solar panels according to the starting quantity value so as to output corresponding first power.
3. The method for controlling charging of a household optical charging energy storage system according to claim 1, wherein the step of starting the photovoltaic module in real time to output the first power according to the comparison result of the maximum generated power and the rated charging power of the energy storage device comprises:
If the maximum power is smaller than the rated charging power of the energy storage equipment, a first real-time node and a sunset time node are respectively obtained, and the photovoltaic charging duration of the photovoltaic module is calculated by using the first real-time node and the sunset time node; calculating a chargeable capacity by using the photovoltaic charging duration and the maximum generated power;
if the chargeable capacity is larger than or equal to the charging demand capacity of the energy storage device, starting the photovoltaic module and outputting the photovoltaic module according to the maximum generated power to obtain first generated power, wherein the charging demand capacity is an electric quantity difference value between the full capacity and the residual electric quantity of the energy storage device;
if the chargeable capacity is smaller than the charging demand capacity of the energy storage equipment, acquiring a current temperature value of the photovoltaic module, and when the current temperature value is not in a preset temperature value range, adjusting the working temperature of the photovoltaic module according to a temperature supplementing control method so as to output corresponding first power generation.
4. The method of claim 1, wherein controlling the thermoelectric generator to output the second generated power and the grid to output the grid generated power comprises:
The method comprises the steps of respectively obtaining the electricity consumption demand of a user and obtaining a temperature difference value, wherein the temperature difference value is the difference value between the temperature of a photovoltaic solar panel of a photovoltaic module and the ambient temperature;
if the electricity consumption demand is greater than the residual electric quantity and the temperature difference is within a preset temperature difference range, starting a thermoelectric generator to output second power generation according to the temperature difference;
calculating a power difference value between the second generated power and rated charging power of the energy storage device;
and controlling the power grid to output the power generated by the power grid according to the power difference value.
5. The method of claim 4, wherein the controlling the thermoelectric generator to output the second generated power and the grid to output the grid generated power further comprises:
and if the electricity consumption demand is greater than the residual electric quantity and the temperature difference is smaller than the minimum value of the preset temperature difference range, outputting the power generation power of the power grid according to the control power grid of the rated charging power of the energy storage equipment.
6. The method of claim 4, wherein the controlling the thermoelectric generator to output the second generated power and the grid to output the grid generated power further comprises:
And if the electricity consumption demand is smaller than the residual electric quantity and the temperature difference is within a preset temperature difference range, independently starting the electric generator to output second power generation according to the temperature difference.
7. The method of charging control of a household light charging energy storage system according to any one of claims 1-6, wherein after the step of charging the energy storage device with the photovoltaic module or simultaneously charging the energy storage device with the thermoelectric generator and the grid, the method further comprises:
and acquiring the electric quantity information of the energy storage equipment in real time, and transmitting the electric quantity information to a preset user terminal for the user to check.
8. A charging control device for a household light charging energy storage system, the device comprising:
the time acquisition module is used for acquiring a current time node when the residual electric quantity of the energy storage device is determined to be lower than an electric quantity critical value;
the daytime charging module is used for detecting the maximum power of the photovoltaic module if the current time node is in the daytime time interval, and starting the photovoltaic module in real time to output the first power according to the comparison result of the maximum power and the rated charging power of the energy storage equipment so as to charge the energy storage equipment by the photovoltaic module;
And the night charging module is used for starting the thermoelectric generator and connecting the thermoelectric generator to the power grid if the current time node is in the night time interval, and controlling the thermoelectric generator to output second power generation power and the power grid to output power generation power of the power grid so as to charge the energy storage equipment simultaneously by the thermoelectric generator and the power grid.
9. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the charge control method of the household light charge energy storage system according to any one of claims 1-7 when executing the computer program.
10. A computer-readable storage medium storing a computer-executable program for causing a computer to execute the charging control method of the household optical charging energy storage system according to any one of claims 1 to 7.
CN202311529392.6A 2023-11-16 2023-11-16 Charging control method and device for household light charging energy storage system Pending CN117394498A (en)

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