CN116995760B - Household energy storage system charging method - Google Patents
Household energy storage system charging method Download PDFInfo
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- CN116995760B CN116995760B CN202310563278.9A CN202310563278A CN116995760B CN 116995760 B CN116995760 B CN 116995760B CN 202310563278 A CN202310563278 A CN 202310563278A CN 116995760 B CN116995760 B CN 116995760B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 306
- 238000000034 method Methods 0.000 title claims abstract description 65
- 230000005611 electricity Effects 0.000 claims abstract description 61
- 238000004458 analytical method Methods 0.000 claims abstract description 45
- 230000003828 downregulation Effects 0.000 claims description 70
- 238000001514 detection method Methods 0.000 claims description 33
- 238000012544 monitoring process Methods 0.000 claims description 23
- 230000002222 downregulating effect Effects 0.000 claims description 16
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 5
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- 238000012986 modification Methods 0.000 description 2
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Classifications
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
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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
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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
- H02J7/34—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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a charging method of a household energy storage system, and relates to the technical field of household energy storage systems; the household energy storage system charging method comprises basic electric quantity information acquisition, battery charging demand analysis, battery charging mode analysis, battery charging time analysis, battery charging information acquisition, battery charging safety analysis and battery charging safety control; the charging mode of the energy storage battery is analyzed according to the generated energy of the solar panel and the electricity consumption of the electric equipment in the target house, and the state of the energy storage battery in the charging process is monitored, so that the defects existing in the prior art are overcome, the intelligent and automatic charging of the energy storage battery in the household energy storage system is realized, the solar energy utilization efficiency is ensured, the power supply pressure of a power grid in a peak period is relieved, the stability of the electric equipment in the using process is further ensured, and the charging safety of the energy storage battery is also ensured to a certain extent.
Description
Technical Field
The invention relates to the technical field of household energy storage systems, in particular to a household energy storage system charging method.
Background
Along with the continuous development of science and technology, electricity becomes one of the indispensable energy sources of people's daily life, in order to ensure the stability of power supply, more and more families choose to install home energy storage system, when the electric quantity of energy storage batteries in home energy storage system is insufficient, need to charge the energy storage batteries, but the charging mode of energy storage batteries has multiple choices, so the method of charging the energy storage batteries in home energy storage system needs to be analyzed.
In the prior art, the charging mode of the energy storage battery in the household energy storage system is mainly used for charging through the electric energy generated by the solar panel, and obviously, the charging mode at least has the following defects:
1. most of household energy storage systems are used in power failure or electricity utilization peak period, the use scene and time are less, and the electric energy generated by the solar panel in the prior art is mainly supplied to the energy storage battery, part of the electric energy is supplied to the electric equipment, the rationality of electric energy distribution of the solar panel power generation cannot be reflected, the solar energy cannot be ensured to supply sufficient electric energy to the electric equipment when the energy storage battery is supplied, thereby the consumption of electric power of a power grid in a house is increased, the electricity utilization cost in the house is improved, on the other hand, when the energy storage battery needs to be charged in the electricity utilization peak period, the electric energy of the solar energy only supplies power to the energy storage battery, the power supply pressure of the power grid cannot be relieved, the stability of the electric equipment in the use process cannot be ensured, and the use experience of a user is reduced.
2. In the prior art, when an energy storage battery is charged, the charging state of the energy storage power supply is not monitored and analyzed, so that the safety of the energy storage power supply in the charging process cannot be guaranteed, the temperature of the energy storage power supply is too high, the loss of electric energy is increased, the energy storage battery is convenient to use, the charging amount of the energy storage power supply is not regulated and controlled according to the charging state of the energy storage power supply, the charging automation and the intelligent level of the energy storage power supply in a household energy storage system cannot be effectively reflected, the electric energy of a solar panel and the sufficiency of the utilization of electric power of a power grid in a house cannot be guaranteed, and the charging cost of the energy storage power supply is increased to a certain extent.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a charging method of a household energy storage system.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention provides a charging method of a household energy storage system, which comprises the following steps: step one, basic electric quantity information acquisition: dividing the use process of the energy storage battery in the target house into all collection time points according to preset time length, and further obtaining the electricity quantity of the solar panel in the target house at all collection time points, the electricity quantity of the electric equipment at all collection time points and the residual electricity quantity of the energy storage battery at all collection time points;
step two, battery charging demand analysis: according to the residual electric quantity of the energy storage battery in the target house at each collection time point, the charging requirement of the energy storage battery in the target house at each collection time point is analyzed;
step three, battery charging mode analysis: if the energy storage battery in the target house needs to be charged at a certain collection time point, analyzing a charging mode of the energy storage battery in the target house at the collection time point, wherein the charging mode is a solar panel charging mode, a power grid charging mode, a hybrid charging mode and a waiting charging mode, and if the charging mode of the energy storage battery in the target house at the collection time point is the waiting charging mode, executing a fourth step;
fourth, battery charging time analysis: if the charging mode of the energy storage battery in the target house at the acquisition time point is a waiting charging mode, analyzing the corresponding starting charging time of the energy storage battery, and further charging;
step five, battery charging information acquisition: when the energy storage battery in the target house is charged, dividing the charging process into monitoring time points according to preset time length, and further obtaining the charging speed and the charging temperature of the energy storage battery in the monitoring time points;
step six, battery charging safety analysis: judging whether the charging state of the energy storage battery is safe or not according to the charging speed and the temperature of the energy storage battery in each monitoring time point;
step seven, battery charging safety control: and if the charging state of the energy storage battery is in a dangerous state in the appointed time point, analyzing the charging adjustment information of the energy storage battery, and correspondingly adjusting.
Preferably, the analyzing the charging requirement of the energy storage battery in the target house at each collecting time point includes the following specific analysis process: comparing the residual electric quantity of the energy storage battery in the target house at each collection time point with a preset electric quantity threshold corresponding to the energy storage battery, and if the residual electric quantity of the energy storage battery at a certain collection time point is smaller than the preset electric quantity threshold corresponding to the energy storage battery, judging that the energy storage battery in the target house needs to be charged at the collection time point, so that the charging requirement of the energy storage battery in the target house at each collection time point is obtained.
Preferably, the charging mode of the energy storage battery in the target house at the collection time point is analyzed, and the specific analysis process is as follows:
comparing the collection time point with preset power utilization peak time periods, if the collection time point is within a preset power utilization peak time period, judging the collection time point as a power utilization peak time point, otherwise, judging the collection time point as a non-power utilization peak time point;
extracting the electricity consumption of the electric equipment in the target house at the acquisition time point and the electricity generation of the solar panel at the acquisition time point, and respectively marking the electricity consumption and the electricity generation as q 1 And q 2 And acquiring a preset standard charge quantity corresponding to the energy storage battery in the target house, and recording the preset standard charge quantity as q Label (C) ；
If q 1 +q Label (C) ＜q 2 Judging that the charging module of the energy storage battery at the collecting time point is in a solar panel charging mode;
if q 1 ＜q 2 And q 1 +q Label (C) ＞q 2 Judging that the charging module of the energy storage battery at the acquisition time point is in a hybrid charging mode;
if q 2 =0, and the collection time point is a non-electricity peak time point, and determining that the charging mode of the energy storage battery at the collection time point is a grid charging mode;
if q 1 ＞q 2 And the collection time point is a power consumption peak time point, and the charging mode of the energy storage battery at the collection time point is judged to be a waiting charging mode.
Preferably, the corresponding starting charging time of the energy storage battery is analyzed, and the specific analysis process is as follows:
taking the acquisition time point as a starting time, and arranging each detection time point according to a preset time length, so as to acquire the electricity consumption of electric equipment at each detection time point and the electricity generation amount of the solar panel at each detection time point;
comparing each detection time point with a preset electricity consumption peak time period, and judging whether each detection time point is an electricity consumption peak time point or not;
comparing the electricity consumption of the electric equipment at each detection time point with the electricity generation amount of the solar panel at each detection time point, and if the electricity consumption of the electric equipment at a certain detection time point is smaller than the electricity generation amount of the solar panel at the detection time point or the detection time point is a non-electricity peak time point, taking the detection time point as a reference charging time, obtaining each reference charging time in this way, comparing each reference charging time, and taking the minimum reference charging time as the starting charging time of the energy storage battery.
Preferably, the determining whether the state of charge of the energy storage battery is safe or not includes the following specific determining process: according to the charging speed and the temperature of the energy storage battery in each monitoring time point, calculating to obtain a charging state coincidence coefficient corresponding to the energy storage battery, comparing the charging state coincidence coefficient corresponding to the energy storage battery with a preset charging state coincidence coefficient threshold value, if the charging state coincidence coefficient corresponding to the energy storage battery is larger than or equal to the preset charging state coincidence threshold value, judging that the charging state of the energy storage battery is in a safe state, otherwise, judging that the charging state of the energy storage battery is in a dangerous state.
Preferably, the calculation obtains the corresponding charging state coincidence coefficient of the energy storage battery, and the specific calculation process is as follows:
substituting the charging speed and the temperature of the energy storage battery in each monitoring time point into a calculation formulaObtaining the corresponding charging state coincidence coefficient of the energy storage battery +.>Wherein v is t ′、T t Respectively representing the charging speed, the charging temperature and the charging v of the energy storage battery at the t-th monitoring time point Label (C) Representing the corresponding preset standard charging speed of the energy storage battery in the target house, wherein T is the set reference temperature epsilon of the energy storage battery 1 、ε 2 Respectively set charging speed of the energy storage battery accords with coefficient and temperatureThe degree corresponds to the weight factor corresponding to the coefficient, t is the number corresponding to each monitoring time point, t=1, 2.
7. Preferably, the analyzing the charging adjustment information of the energy storage battery specifically includes the following steps:
if the charging mode of the energy storage battery at the collecting time point is a solar panel charging mode, analyzing to obtain a down-regulating value of the power supply speed of the corresponding solar panel when the energy storage battery is charged;
if the charging mode of the energy storage battery at the acquisition time point is a power grid charging mode, analyzing to obtain a corresponding power grid power supply speed down regulation value of the energy storage battery during charging;
if the charging mode of the energy storage battery at the collecting time point is a hybrid charging mode, analyzing to obtain a corresponding solar power supply speed down regulation value and a corresponding power grid power supply speed down regulation value of the energy storage battery during charging;
and taking the down-regulating value of the solar power supply speed, the down-regulating value of the power supply speed of the energy storage battery corresponding to the power grid during charging, and the down-regulating value of the power supply speed of the energy storage battery corresponding to the solar power supply speed and the down-regulating value of the power grid during charging as charging regulation information of the energy storage battery.
Preferably, the analysis obtains a down-regulation value of the power supply speed of the energy storage battery corresponding to the solar panel during charging, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, and taking the power supply speed down regulation value as a down regulation value corresponding to the solar panel power supply speed of the energy storage battery during charging.
Preferably, the analysis obtains a power supply speed down-regulation value of the energy storage battery corresponding to the power grid during charging, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, and taking the power supply speed down regulation value as a down regulation value corresponding to the power grid power supply speed of the energy storage battery during charging.
Preferably, the analysis obtains a corresponding solar power supply speed down-regulation value and a corresponding grid power supply speed down-regulation value of the energy storage battery during charging, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, further comparing the power supply speed down regulation value corresponding to the energy storage battery with a power supply speed corresponding to the power supply grid of the energy storage battery during charging, taking the power supply speed down regulation value corresponding to the energy storage battery as the power supply speed down regulation value corresponding to the power supply grid of the energy storage battery during charging if the power supply speed down regulation value corresponding to the energy storage battery is smaller than the power supply speed corresponding to the power supply grid of the energy storage battery during charging, closing power supply of the power supply grid during charging by the energy storage battery if the power supply speed down regulation value corresponding to the energy storage battery is larger than the power supply amount corresponding to the power supply grid of the energy storage battery during charging, and taking the difference value between the power supply speed down regulation value corresponding to the power supply speed of the power supply grid of the energy storage battery during charging as the power supply speed down regulation value corresponding to the solar energy storage battery during charging.
The invention has the beneficial effects that: 1. according to the household energy storage system charging method, the charging mode of the energy storage battery is analyzed according to the generated energy of the solar panel and the electric energy consumption of the electric equipment in the target house, and the state of the energy storage battery in the charging process is monitored, so that the defects in the prior art are overcome, the intelligent and automatic charging of the energy storage battery in the household energy storage system is realized, the solar energy utilization efficiency is ensured, the power supply pressure of the electric equipment in the peak period is relieved, the stability of the electric equipment in the use process is further ensured, and the charging safety of the energy storage battery is also ensured to a certain extent.
2. According to the invention, the charging mode of the energy storage battery is analyzed in the battery charging mode analysis, so that the utilization efficiency of solar energy is effectively ensured when the energy storage battery is charged, and sufficient electric energy is provided for electric equipment, thereby reducing the consumption of electric energy of a power grid in a house and reducing the electricity consumption cost in the house.
3. According to the invention, in the battery charging safety control, the charging adjustment information of the energy storage battery is analyzed and regulated according to the state of the energy storage battery in the charging process, so that the safety of the energy storage power supply in the charging process is ensured, the loss of electric energy in the charging process is reduced, the sufficiency of the electric energy of the solar panel and the utilization of electric energy of a power grid in a house is ensured, and the charging cost of the energy storage power supply is also reduced to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the steps of the method of 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. 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.
Referring to fig. 1, a charging method of a home energy storage system includes the following steps: step one, basic electric quantity information acquisition: dividing the use process of the energy storage battery in the target house into all collection time points according to preset time length, and further obtaining the electricity quantity of the solar panel in the target house at all collection time points, the electricity quantity of the electric equipment at all collection time points and the residual electricity quantity of the energy storage battery at all collection time points;
the solar panel in the target house sends out electricity at each collection time point, the electricity consumption of the electric equipment at each collection time point and the residual electricity of the energy storage battery at each collection time point are obtained from the household energy storage control center.
It should also be noted that the consumer is the sum of all the consumers in the target house.
Step two, battery charging demand analysis: according to the residual electric quantity of the energy storage battery in the target house at each collection time point, the charging requirement of the energy storage battery in the target house at each collection time point is analyzed;
in a specific embodiment, the charging requirements of the energy storage battery in the target house at each collection time point are analyzed, and the specific analysis process is as follows: comparing the residual electric quantity of the energy storage battery in the target house at each collection time point with a preset electric quantity threshold corresponding to the energy storage battery, and if the residual electric quantity of the energy storage battery at a certain collection time point is smaller than the preset electric quantity threshold corresponding to the energy storage battery, judging that the energy storage battery in the target house needs to be charged at the collection time point, so that the charging requirement of the energy storage battery in the target house at each collection time point is obtained.
Step three, battery charging mode analysis: if the energy storage battery in the target house needs to be charged at a certain collection time point, analyzing a charging mode of the energy storage battery in the target house at the collection time point, wherein the charging mode is a solar panel charging mode, a power grid charging mode, a hybrid charging mode and a waiting charging mode, and if the charging mode of the energy storage battery in the target house at the collection time point is the waiting charging mode, executing a fourth step;
in a specific embodiment, the charging mode of the energy storage battery in the target house at the collection time point is analyzed, and the specific analysis process is as follows: comparing the collection time point with preset power utilization peak time periods, if the collection time point is within a preset power utilization peak time period, judging the collection time point as a power utilization peak time point, otherwise, judging the collection time point as a non-power utilization peak time point;
extracting the electricity consumption of the electric equipment in the target house at the acquisition time point and the electricity generation of the solar panel at the acquisition time point, and respectively marking the electricity consumption and the electricity generation as q 1 And q 2 And acquiring a preset standard charge quantity corresponding to the energy storage battery in the target house, and recording the preset standard charge quantity as q Label (C) ；
If q 1 +q Label (C) ＜q 2 Then determine the stored energyThe charging module of the pool at the collecting time point is in a solar panel charging mode;
when q 1 +q Label (C) ＜q 2 And when the power supply quantity of the electric equipment and the residual electric quantity of the power supply quantity of the energy storage battery are removed from the generated energy of the solar panel, the residual electric quantity is input into the power grid, and the electric energy loss is prevented.
If q 1 ＜q 2 And q 1 +q Label (C) ＞q 2 Judging that the charging module of the energy storage battery at the acquisition time point is in a hybrid charging mode;
if q 2 =0, and the collection time point is a non-electricity peak time point, and determining that the charging mode of the energy storage battery at the collection time point is a grid charging mode;
if q 1 ＞q 2 And the collection time point is a power consumption peak time point, and the charging mode of the energy storage battery at the collection time point is judged to be a waiting charging mode.
According to the invention, the charging mode of the energy storage battery is analyzed in the battery charging mode analysis, so that the utilization efficiency of solar energy is effectively ensured when the energy storage battery is charged, and sufficient electric energy is provided for electric equipment, thereby reducing the consumption of electric energy of a power grid in a house and reducing the electricity consumption cost in the house.
Fourth, battery charging time analysis: if the charging mode of the energy storage battery in the target house at the acquisition time point is a waiting charging mode, analyzing the corresponding starting charging time of the energy storage battery, and further charging;
in a specific embodiment, the corresponding starting charging time of the energy storage battery is analyzed, and the specific analysis process is as follows: taking the acquisition time point as a starting time, and arranging each detection time point according to a preset time length, so as to acquire the electricity consumption of electric equipment at each detection time point and the electricity generation amount of the solar panel at each detection time point;
comparing each detection time point with a preset electricity consumption peak time period, and judging whether each detection time point is an electricity consumption peak time point or not;
comparing the electricity consumption of the electric equipment at each detection time point with the electricity generation amount of the solar panel at each detection time point, and if the electricity consumption of the electric equipment at a certain detection time point is smaller than the electricity generation amount of the solar panel at the detection time point or the detection time point is a non-electricity peak time point, taking the detection time point as a reference charging time, obtaining each reference charging time in this way, comparing each reference charging time, and taking the minimum reference charging time as the starting charging time of the energy storage battery.
Step five, battery charging information acquisition: when the energy storage battery in the target house is charged, dividing the charging process into monitoring time points according to preset time length, and further obtaining the charging speed and the charging temperature of the energy storage battery in the monitoring time points;
the charging speed of the energy storage battery at each monitoring time point is obtained from a household energy storage control center; and installing a temperature sensor in the energy storage battery, and collecting the charging speed and the temperature of the energy storage battery at each monitoring time point through the temperature sensor.
Step six, battery charging safety analysis: judging whether the charging state of the energy storage battery is safe or not according to the charging speed and the temperature of the energy storage battery in each monitoring time point;
in a specific embodiment, the method for determining whether the state of charge of the energy storage battery is safe comprises the following steps: according to the charging speed and the temperature of the energy storage battery in each monitoring time point, calculating to obtain a charging state coincidence coefficient corresponding to the energy storage battery, comparing the charging state coincidence coefficient corresponding to the energy storage battery with a preset charging state coincidence coefficient threshold value, if the charging state coincidence coefficient corresponding to the energy storage battery is larger than or equal to the preset charging state coincidence threshold value, judging that the charging state of the energy storage battery is in a safe state, otherwise, judging that the charging state of the energy storage battery is in a dangerous state.
In another specific embodiment, the state of charge corresponding to the energy storage battery is calculated according to the following calculation process: substituting the charging speed and the temperature of the energy storage battery in each monitoring time point into a calculation formulaObtaining the corresponding charging state coincidence coefficient of the energy storage battery +.>Wherein v is t ′、T t Respectively representing the charging speed, the charging temperature and the charging v of the energy storage battery at the t-th monitoring time point Label (C) Representing the corresponding preset standard charging speed of the energy storage battery in the target house, wherein T is the set reference temperature epsilon of the energy storage battery 1 、ε 2 And respectively setting a weight factor corresponding to the charging speed coincidence coefficient and the temperature coincidence coefficient of the energy storage battery, wherein t is the number corresponding to each monitoring time point, and t=1, 2.
Step seven, battery charging safety control: and if the charging state of the energy storage battery is in a dangerous state in the appointed time point, analyzing the charging adjustment information of the energy storage battery, and correspondingly adjusting.
In a specific embodiment, the charging adjustment information of the energy storage battery is analyzed, and the specific analysis process is as follows: if the charging mode of the energy storage battery at the collecting time point is a solar panel charging mode, analyzing to obtain a down-regulating value of the power supply speed of the corresponding solar panel when the energy storage battery is charged;
if the charging mode of the energy storage battery at the acquisition time point is a power grid charging mode, analyzing to obtain a corresponding power grid power supply speed down regulation value of the energy storage battery during charging;
if the charging mode of the energy storage battery at the collecting time point is a hybrid charging mode, analyzing to obtain a corresponding solar power supply speed down regulation value and a corresponding power grid power supply speed down regulation value of the energy storage battery during charging;
and taking the down-regulating value of the solar power supply speed, the down-regulating value of the power supply speed of the energy storage battery corresponding to the power grid during charging, and the down-regulating value of the power supply speed of the energy storage battery corresponding to the solar power supply speed and the down-regulating value of the power grid during charging as charging regulation information of the energy storage battery.
In another specific embodiment, the down-regulating value of the power supply speed of the solar panel corresponding to the energy storage battery during charging is obtained through analysis, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, and taking the power supply speed down regulation value as a down regulation value corresponding to the solar panel power supply speed of the energy storage battery during charging.
In another specific embodiment, the power supply speed of the energy storage battery is adjusted down when the energy storage battery is charged, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, and taking the power supply speed down regulation value as a down regulation value corresponding to the power grid power supply speed of the energy storage battery during charging.
In still another specific embodiment, the energy storage battery is analyzed to obtain a corresponding solar power supply speed down regulation value and a corresponding grid power supply speed down regulation value during charging, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, further comparing the power supply speed down regulation value corresponding to the energy storage battery with a power supply speed corresponding to the power supply grid of the energy storage battery during charging, taking the power supply speed down regulation value corresponding to the energy storage battery as the power supply speed down regulation value corresponding to the power supply grid of the energy storage battery during charging if the power supply speed down regulation value corresponding to the energy storage battery is smaller than the power supply speed corresponding to the power supply grid of the energy storage battery during charging, closing power supply of the power supply grid during charging by the energy storage battery if the power supply speed down regulation value corresponding to the energy storage battery is larger than the power supply amount corresponding to the power supply grid of the energy storage battery during charging, and taking the difference value between the power supply speed down regulation value corresponding to the power supply speed of the power supply grid of the energy storage battery during charging as the power supply speed down regulation value corresponding to the solar energy storage battery during charging.
According to the invention, in the battery charging safety control, the charging adjustment information of the energy storage battery is analyzed and regulated according to the state of the energy storage battery in the charging process, so that the safety of the energy storage power supply in the charging process is ensured, the loss of electric energy in the charging process is reduced, the sufficiency of the electric energy of the solar panel and the utilization of electric energy of a power grid in a house is ensured, and the charging cost of the energy storage power supply is also reduced to a certain extent.
According to the embodiment of the invention, the charging mode of the energy storage battery is analyzed according to the generated energy of the solar panel and the electric quantity of the electric equipment in the target house, and the state of the energy storage battery in the charging process is monitored, so that the defects in the prior art are overcome, the intelligent and automatic charging of the energy storage battery in the household energy storage system is realized, the solar energy utilization efficiency is ensured, the power supply pressure of a power grid in a peak period is relieved, the stability of the electric equipment in the use process is ensured, and the charging safety of the energy storage battery is also ensured to a certain extent.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A method for charging a home energy storage system, the method comprising the steps of:
step one, basic electric quantity information acquisition: dividing the use process of the energy storage battery in the target house into all collection time points according to preset time length, and further obtaining the electricity quantity of the solar panel in the target house at all collection time points, the electricity quantity of the electric equipment at all collection time points and the residual electricity quantity of the energy storage battery at all collection time points;
step two, battery charging demand analysis: according to the residual electric quantity of the energy storage battery in the target house at each collection time point, the charging requirement of the energy storage battery in the target house at each collection time point is analyzed;
step three, battery charging mode analysis: if the energy storage battery in the target house needs to be charged at a certain collection time point, analyzing a charging mode of the energy storage battery in the target house at the collection time point, wherein the charging mode is a solar panel charging mode, a power grid charging mode, a hybrid charging mode and a waiting charging mode, and if the charging mode of the energy storage battery in the target house at the collection time point is the waiting charging mode, executing a fourth step;
the charging mode of the energy storage battery in the analysis target house at the acquisition time point is specifically analyzed as follows: comparing the collection time point with preset power utilization peak time periods, if the collection time point is within a preset power utilization peak time period, judging the collection time point as a power utilization peak time point, otherwise, judging the collection time point as a non-power utilization peak time point;
extracting the electricity consumption of the electric equipment in the target house at the acquisition time point and the electricity generation of the solar panel at the acquisition time point, and respectively marking the electricity consumption and the electricity generation as q 1 And q 2 And acquiring a preset standard charge quantity corresponding to the energy storage battery in the target house, and recording the preset standard charge quantity as q Label (C) ；
If q 1 +q Label (C) ＜q 2 Judging that the charging module of the energy storage battery at the collecting time point is in a solar panel charging mode;
if q 1 ＜q 2 And q 1 +q Label (C) ＞q 2 Judging that the charging module of the energy storage battery at the acquisition time point is in a hybrid charging mode;
if q 2 =0, and the collection time point is a non-electricity peak time point, and determining that the charging mode of the energy storage battery at the collection time point is a grid charging mode;
if q 1 ＞q 2 The collection time point is a power consumption peak time point, and the charging mode of the energy storage battery at the collection time point is judged to be a waiting charging mode;
fourth, battery charging time analysis: if the charging mode of the energy storage battery in the target house at the acquisition time point is a waiting charging mode, analyzing the corresponding starting charging time of the energy storage battery, and further charging;
step five, battery charging information acquisition: when the energy storage battery in the target house is charged, dividing the charging process into monitoring time points according to preset time length, and further obtaining the charging speed and the charging temperature of the energy storage battery in the monitoring time points;
step six, battery charging safety analysis: judging whether the charging state of the energy storage battery is safe or not according to the charging speed and the temperature of the energy storage battery in each monitoring time point;
step seven, battery charging safety control: and if the charging state of the energy storage battery is in a dangerous state in the appointed time point, analyzing the charging adjustment information of the energy storage battery, and correspondingly adjusting.
2. The method for charging a household energy storage system according to claim 1, wherein the charging requirements of the energy storage battery in the target house at each collection time point are analyzed by the following specific analysis process: comparing the residual electric quantity of the energy storage battery in the target house at each collection time point with a preset electric quantity threshold corresponding to the energy storage battery, and if the residual electric quantity of the energy storage battery at a certain collection time point is smaller than the preset electric quantity threshold corresponding to the energy storage battery, judging that the energy storage battery in the target house needs to be charged at the collection time point, so that the charging requirement of the energy storage battery in the target house at each collection time point is obtained.
3. The method for charging a home energy storage system according to claim 1, wherein the analyzing the charging start time corresponding to the energy storage battery comprises the following specific analysis process:
taking the acquisition time point as a starting time, and arranging each detection time point according to a preset time length, so as to acquire the electricity consumption of electric equipment at each detection time point and the electricity generation amount of the solar panel at each detection time point;
comparing each detection time point with a preset electricity consumption peak time period, and judging whether each detection time point is an electricity consumption peak time point or not;
comparing the electricity consumption of the electric equipment at each detection time point with the electricity generation amount of the solar panel at each detection time point, and if the electricity consumption of the electric equipment at a certain detection time point is smaller than the electricity generation amount of the solar panel at the detection time point or the detection time point is a non-electricity peak time point, taking the detection time point as a reference charging time, obtaining each reference charging time in this way, comparing each reference charging time, and taking the minimum reference charging time as the starting charging time of the energy storage battery.
4. The method for charging a home energy storage system according to claim 1, wherein the determining whether the state of charge of the energy storage battery is safe comprises the following steps: according to the charging speed and the temperature of the energy storage battery in each monitoring time point, calculating to obtain a charging state coincidence coefficient corresponding to the energy storage battery, comparing the charging state coincidence coefficient corresponding to the energy storage battery with a preset charging state coincidence coefficient threshold value, if the charging state coincidence coefficient corresponding to the energy storage battery is larger than or equal to the preset charging state coincidence threshold value, judging that the charging state of the energy storage battery is in a safe state, otherwise, judging that the charging state of the energy storage battery is in a dangerous state.
5. The method for charging a household energy storage system according to claim 4, wherein the calculation results in a state of charge corresponding to the energy storage battery according to a coefficient, and the specific calculation process is as follows:
substituting the charging speed and the temperature of the energy storage battery in each monitoring time point into a calculation formulaObtaining the corresponding charging state coincidence coefficient of the energy storage battery +.>Wherein v is t ′、T t Respectively representing the charging speed, the charging temperature and the charging v of the energy storage battery at the t-th monitoring time point Label (C) Representing the corresponding preset standard charging speed of the energy storage battery in the target house, wherein T is the set reference temperature epsilon of the energy storage battery 1 、ε 2 Respectively set energy storage battery charging speed conforming coefficient and temperature conforming coefficient pairThe weight factor, t, is the number corresponding to each monitoring time point, t=1, 2.
6. The method for charging a home energy storage system according to claim 1, wherein the charging adjustment information of the energy storage battery is analyzed by the following specific analysis process:
if the charging mode of the energy storage battery at the collecting time point is a solar panel charging mode, analyzing to obtain a down-regulating value of the power supply speed of the corresponding solar panel when the energy storage battery is charged;
if the charging mode of the energy storage battery at the acquisition time point is a power grid charging mode, analyzing to obtain a corresponding power grid power supply speed down regulation value of the energy storage battery during charging;
if the charging mode of the energy storage battery at the collecting time point is a hybrid charging mode, analyzing to obtain a corresponding solar power supply speed down regulation value and a corresponding power grid power supply speed down regulation value of the energy storage battery during charging;
and taking the down-regulating value of the solar power supply speed, the down-regulating value of the power supply speed of the energy storage battery corresponding to the power grid during charging, and the down-regulating value of the power supply speed of the energy storage battery corresponding to the solar power supply speed and the down-regulating value of the power grid during charging as charging regulation information of the energy storage battery.
7. The method for charging a household energy storage system according to claim 6, wherein the analysis obtains a down-regulation value of the power supply speed of the energy storage battery corresponding to the solar panel during charging, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, and taking the power supply speed down regulation value as a down regulation value corresponding to the solar panel power supply speed of the energy storage battery during charging.
8. The method for charging a household energy storage system according to claim 6, wherein the analysis results in a corresponding power supply speed down-regulation value of the energy storage battery during charging, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, and taking the power supply speed down regulation value as a down regulation value corresponding to the power grid power supply speed of the energy storage battery during charging.
9. The method for charging a household energy storage system according to claim 6, wherein the analysis results in a corresponding solar power supply speed down-regulation value and a power grid power supply speed down-regulation value of the energy storage battery during charging, and the specific analysis process is as follows: and comparing the charging state coincidence coefficient corresponding to the energy storage battery with a charging state coincidence coefficient interval corresponding to each preset power supply speed down regulation value to obtain a power supply speed down regulation value corresponding to the energy storage battery, further comparing the power supply speed down regulation value corresponding to the energy storage battery with a power supply speed corresponding to the power supply grid of the energy storage battery during charging, taking the power supply speed down regulation value corresponding to the energy storage battery as the power supply speed down regulation value corresponding to the power supply grid of the energy storage battery during charging if the power supply speed down regulation value corresponding to the energy storage battery is smaller than the power supply speed corresponding to the power supply grid of the energy storage battery during charging, closing power supply of the power supply grid during charging by the energy storage battery if the power supply speed down regulation value corresponding to the energy storage battery is larger than the power supply amount corresponding to the power supply grid of the energy storage battery during charging, and taking the difference value between the power supply speed down regulation value corresponding to the power supply speed of the power supply grid of the energy storage battery during charging as the power supply speed down regulation value corresponding to the solar energy storage battery during charging.
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Denomination of invention: A charging method for household energy storage system Granted publication date: 20240123 Pledgee: Industrial and Commercial Bank of China Limited Huizhou Fuli International Center Branch Pledgor: HUIZHOU SUNWAY ELECTRONICS Co.,Ltd. Registration number: Y2024980041790 |