A power supply management system and method for energy storage container

Abstract

The invention discloses a power supply management system and method for an energy storage container, relates to the technical field of power supply management of energy storage containers, and solves the technical problems that the energy storage container, as a peak-shifting power supply device, dynamically supplies power to mobile batteries according to regional power consumption conditions, and it is difficult to select a priority power supply compartment by combining analysis based on the storage position and power of the mobile batteries when performing dynamic power supply. The invention obtains the standard battery withdrawal amount of the energy storage container in the current time period, obtains the power supply quantity of the battery compartment of the energy storage container based on the peak time period and the standard battery withdrawal amount, selects the priority power supply compartment based on the stored battery information and the power supply quantity of the battery compartment, performs power analysis on the priority power supply compartment to obtain the output power of the energy storage container, and performs safety regulation based on the output power of the energy storage container. The invention relieves the power supply pressure of the power grid and reduces the inconvenience of storing and accessing batteries and the waste of energy.

Description

Technical Field

[0001] The present invention belongs to the field of power supply management of energy storage containers, and in particular relates to a power supply management system and method for energy storage containers. Background Art

[0002] With the widespread application of renewable energy and the continuous development of the power market, energy storage systems play an increasingly important role in the power system. Energy storage containers, as a type of energy storage equipment that can provide off-peak power supply, are increasingly favored by enterprises. However, for safety reasons, energy storage containers are generally placed on open ground. Because energy storage containers occupy a large area and are expensive, if they are only used as an energy storage device to provide off-peak power supply without making full use of other functions, it will cause waste of land and equipment resources and reduce operating efficiency when power supply is not needed. Therefore, it is increasingly accepted that energy storage containers can be used as a mobile shared battery power supply device while providing power supply for enterprises or factories.

[0003] At present, most power supply management systems and methods for energy storage containers, when used as energy storage devices to provide staggered power supply, find it difficult to dynamically power mobile batteries according to the power consumption in the current area, and only mechanically charge the batteries. This will increase the power supply pressure of the energy storage containers and even cause safety problems for the energy storage containers. At the same time, most power supply management systems and methods for energy storage containers, when the energy storage containers are dynamically powered, find it difficult to select priority power supply compartments based on a combined analysis of the storage location and power of the mobile batteries, and only mechanically power a specific number of mobile batteries, ignoring the location and remaining power of the batteries, causing inconvenience in accessing the batteries and waste of energy.

[0004] Therefore, the present invention discloses a power supply management system and method for an energy storage container, which are used to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a power supply management system and method for an energy storage container, which are used to solve the technical problems that in the energy storage container power supply system, the energy storage container is used as a peak-shifting power supply device and dynamically supplies power to mobile batteries according to regional power consumption conditions, and it is difficult to select a priority power supply compartment based on the storage position and power of the mobile battery during dynamic power supply. The present invention solves the above problems by obtaining the standard battery withdrawal amount of the energy storage container in the current time period, obtaining the power supply quantity of the battery compartment of the energy storage container based on the peak time period and the standard battery withdrawal amount, extracting the storage battery information, selecting the priority power supply compartment based on the storage battery information and the power supply quantity of the battery compartment, performing power analysis on the priority power supply compartment to obtain the output power of the energy storage container, and performing safety regulation based on the output power of the energy storage container.

[0006] To achieve the above-mentioned object, a first aspect of the present invention provides a power supply management system for an energy storage container, comprising: a power supply management module, and an information acquisition module, a safety monitoring module and a database connected thereto;

[0007] The information acquisition module is used to obtain the basic information of the energy storage container and the peak time period of each time period in the current area; wherein the basic information includes the number of battery compartments, storage battery information, and total power supply power; the storage battery information includes the storage quantity, storage location, and remaining battery power;

[0008] The power supply management module is used to obtain the standard battery removal quantity of the energy storage container in the current time period, and obtain the battery compartment power supply quantity of the energy storage container based on the peak time period and the standard battery removal quantity; extract the storage battery information, and select the priority power supply compartment based on the storage battery information and the battery compartment power supply quantity;

[0009] The safety monitoring module extracts priority power supply spaces, performs power analysis on the priority power supply spaces to obtain output power of energy storage containers, and performs safety regulation based on the output power of energy storage containers.

[0010] In the present invention, the peak time period conditions of each time period in the current area are obtained in order to obtain the regional peak power consumption conditions of the time period where the current time is located, and provide reference data for subsequent analysis; the standard battery removal amount of the energy storage container in the current time period is obtained in order to obtain the most stable battery removal amount that can represent the current time period from historical data, and provide data support for the subsequent acquisition of the battery compartment power supply quantity; the battery compartment power supply quantity of the energy storage container is obtained based on the peak time period conditions and the standard battery removal amount, in order to alleviate the power supply pressure of the power grid by partially supplying battery power to the energy storage container during the peak period of regional power consumption, and indirectly ensure the safety of the power grid during the peak power consumption period; the priority power supply compartment is selected based on the stored battery information and the battery compartment power supply quantity, in order to prioritize the power supply sorting based on the batteries that have been placed in the energy storage container after determining the battery compartment power supply quantity, and select the batteries with high priority for priority power supply, so as to preferentially supply power to the batteries that are easy to access and have a large amount of remaining power in the energy storage container, which is convenient for users to access the batteries while reducing the safety hazards of power supply.

[0011] Preferably, the obtaining of basic information of the energy storage container includes:

[0012] The number of battery compartments and the total power supply of the current energy storage container are obtained from the database; the number of batteries stored in the energy storage container and the storage position of each battery are obtained through the weight sensor and the monitoring device, and the remaining battery power of each battery in the energy storage container is obtained through the power monitoring system.

[0013] Preferably, the obtaining of the peak time period of each time period in the current area includes:

[0014] A day is divided into n time periods, the peak power consumption time range of the current area is obtained from the database, the time periods are extracted in sequence, the proportion of the peak power consumption time range to the time period is marked as the peak proportion, and it is determined whether the peak proportion exceeds the preset proportion; if yes, the corresponding time period is marked as the peak power consumption time period; if no, the corresponding time period is marked as the non-peak power consumption time period; wherein the time periods are divided manually, the preset proportion is obtained through experience, and the peak time period includes the peak power consumption time period and the non-peak power consumption time period.

[0015] When the present invention divides n time periods, the specific range of each time period is manually set based on comprehensive consideration of the current battery access conditions of the energy storage container and the peak electricity consumption time of the area. This allows the time periods to be adaptively divided, reducing the increase in system computing power and the occurrence of unreasonable division caused by mechanical division of time periods.

[0016] Preferably, the obtaining of the standard amount of batteries removed from the energy storage container in the current time period includes:

[0017] Extract the current time, obtain the time period in which the current time is located, extract the daily historical battery removal amount of the energy storage container in the said time period from the database, and establish a battery removal amount library;

[0018] Obtain the variance of the battery quantity library, and determine whether the variance is less than a set value; if yes, obtain the average value of the battery quantity library; if no, extract the mode of the data in the battery quantity library, remove the number with the largest absolute value of the difference from the mode in the battery quantity library, recalculate the variance of the remaining data in the battery quantity library, and stop the removal operation when the variance of the remaining data in the battery quantity library is less than the set value, and obtain the average value of the remaining data in the battery quantity library;

[0019] The obtained average value is marked as the standard battery removal amount of the current energy storage container.

[0020] Preferably, the method of obtaining the power supply quantity of the battery compartment of the energy storage container based on the peak time period and the standard battery withdrawal quantity includes:

[0021] Extract the peak time period of the current time period, and determine whether the peak time period is a peak power consumption period; if yes, mark the peak ratio value as a peak power consumption factor; if no, mark the peak power consumption factor of the current time period as 0;

[0022] Extract the peak power factor DYZ and the standard battery withdrawal amount BQL in the current time period, based on the formula Get the current battery compartment power supply quantity GDL of the energy storage container; where: is the rounding up sign, α is the amplitude adjustment coefficient;

[0023] Extract the number of battery compartments of the current energy storage container and determine whether the number of battery compartments is less than the battery compartment power supply quantity GDL; if yes, use the value of the battery compartment number to update the battery compartment power supply quantity GDL; if no, update the battery compartment power supply quantity GDL by adding zero.

[0024] It is worth noting that the present invention uses the BQL / exp(α×DYZ) formula when obtaining the battery compartment power supply quantity GDL. The curve of the BQL / exp(α×DYZ) formula is inclined downward. Specifically, as the value of the peak power factor DYZ increases, the value of the battery compartment power supply quantity GDL decreases accordingly. This design is because the value of the peak power factor is obtained based on the peak ratio. The peak ratio indicates the proportion of the peak power time range in the time period. The larger the peak ratio, the greater the proportion of the peak power time range in the current time period. At this time, in order to alleviate the power supply pressure of the power grid, the battery compartment power supply quantity should be reduced, thereby indirectly ensuring the safety of the power grid during the peak power consumption time.

[0025] It is worth noting that in the present invention, when obtaining the battery compartment power supply quantity GDL, the Formula, using the ceiling symbol This is because the standard battery withdrawal amount BQL has been further reduced in value according to the peak power consumption factor. At this time, it has the effect of reducing the pressure on the power grid during the peak power consumption period. At this time, the economic benefits of the current energy storage container must also be considered. Therefore, the battery compartment power supply quantity GDL is rounded up. While ensuring the pressure reduction of the power grid, the battery compartment power supply quantity of the energy storage container can be appropriately increased, thereby improving the flexibility of the system.

[0026] Preferably, the selecting of the priority power supply compartment based on the storage battery information and the power supply quantity of the battery compartment includes:

[0027] A1: Extract the number of batteries stored in the current energy storage container and determine whether the number of batteries stored exceeds the battery compartment power supply quantity GDL; if yes, jump to A2; if no, mark all the compartments where batteries are stored in the current energy storage container as priority power supply compartments;

[0028] A2: Extract the storage location of each battery in the current energy storage container, and obtain the convenience factor BJYi of each battery storage location to the convenience point; extract the remaining battery power SYDi of each battery in the current energy storage container, and obtain the power factor DLYi of each battery based on the formula DLYi=SYDi / BSYD; where the convenience point is the location of the battery compartment that saves the most effort when storing batteries in the energy storage container, which is set manually on site; i is the number of batteries stored in the current energy storage container; BSYD is the standard remaining battery power set manually;

[0029] A3: Based on the formula YDZi=β / exp(BJYi)+γ×ln(DLYi+1), the priority power supply factor YDZi of each battery stored in the current energy storage container is obtained; where β and γ are proportional adjustment factors, and β+γ=1;

[0030] A4: Sort the priority power supply factors YDZi from large to small, and establish a sorting table; extract the updated battery compartment power supply quantity GDL, and determine in turn whether the serial number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL; if so, mark the compartment where the batteries are stored corresponding to the current serial number and the serial number before the current serial number as the priority power supply compartment; if not, continue to determine the serial number of the priority power supply factor YDZi and the updated battery compartment power supply quantity GDL until the serial number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL, then mark the compartment where the batteries are stored corresponding to the current serial number and the serial number before the current serial number as the priority power supply compartment.

[0031] It is worth noting that this step judges the storage quantity and the battery compartment power supply quantity GDL in A1. When the storage quantity exceeds the battery compartment power supply quantity GDL, it indicates that the current energy storage container can proceed to the next step of obtaining the priority power supply space. When the storage quantity does not exceed the battery compartment power supply quantity GDL, it indicates that the number of batteries stored in the current energy storage container is small. At this time, there is no need to obtain the priority power supply space, and all stored batteries can be powered directly. This can avoid the system from performing useless calculations and improve the system's computing efficiency.

[0032] It is worth noting that when obtaining the priority power supply factor YDZi, the formula YDZi=β / exp(BJYi)+γ×ln(DLYi+1) is used, wherein β / exp(BJYi) indicates that the more inconvenient it is to store the battery at the storage location of the corresponding battery, the smaller the priority power supply factor YDZi of the battery at the current storage location, and the later the currently stored battery will be powered; γ×ln(DLYi+1) indicates that the more remaining power the corresponding storage battery has, the larger the corresponding priority power supply factor YDZi will be, and the earlier the currently stored battery will be powered.

[0033] Preferably, the step of obtaining the convenience factor BJYi of each storage location of the stored batteries to reach the convenience point includes:

[0034] Sequentially extract the straight-line distance ZLi from the storage location of each battery in the current energy storage container to the convenient point, and obtain the average straight-line distance PZL from the storage location of all batteries to the convenient point based on the formula PZL=∑(ZLi / i); extract the angle JDi between the line connecting the center point of the battery compartment where the storage location is located and the convenient point and the horizontal line;

[0035] Get the horizontal height between the center point of the battery compartment of each storage position and the convenient point, and judge whether the horizontal height of the center point of the battery compartment of the current battery storage position is greater than the horizontal height of the convenient point; if yes, get the horizontal height difference SCZi between the center point of the battery compartment and the convenient point, and get the convenience factor BJYi based on the formula BJYi=(δ×exp(ZLi / PZL)+ρ×sin(JDi))×(1+σ×SCZi / DSCZ); if no, get the convenience factor BJYi based on the formula BJYi=δ×exp(ZLi / PZL)+ρ×sin(JDi); where ∑ is the summation symbol, and the summation range of ∑ is [1, i]; δ and ρ are proportional adjustment factors, and δ+ρ=1; σ is the weight adjustment factor, which is set manually according to the weight of the battery; DSCZ is the maximum value of the horizontal height difference SCZi.

[0036] It is worth noting that when obtaining the convenience factor, the present invention comprehensively analyzes the straight-line distance, angle deviation and height between the storage location where the battery is stored and the convenience point to obtain the final value. By comprehensively analyzing these factors, the convenience between the two locations can be more accurately evaluated. For example, even if the straight-line distance between the two locations is the same, the angle deviation or height difference may affect the convenience of actual operation.

[0037] It is worth noting that the present invention performs a two-step analysis in analyzing the impact of the height situation on the convenience factor. First, the relationship between the horizontal height of the battery storage location and the horizontal height of the convenience point is determined: when the horizontal height of the storage location is higher than the horizontal height of the convenience point, when the user puts the battery into the storage location, the height will make the user use more effort to store the battery. At this time, the larger the horizontal height difference SCZi between the center point of the battery compartment where the storage location is located and the convenience point, the greater the effort the user needs to use. At this time, when the battery weight is constant, the height difference will become a factor affecting the convenience, and the larger the height difference, the less convenient it is.

[0038] When the horizontal height of the storage position is not higher than the horizontal height of the convenience point, the inconvenience caused by the height to the storage of the battery can be ignored, because the convenience point is the point where the user saves the most effort to store the battery. When the user stores the battery in a battery compartment with a horizontal height lower than the convenience point, the impact of the height on the user is less than or equal to the convenience point, but at this time the user may need to bend over or squat to store the battery in the battery compartment, so the convenience is not as good as the convenience point. This system indirectly calculates the inconvenience caused to human activities through the straight-line distance from the storage position to the convenience point, and the angle between the line connecting the center point of the battery compartment where the storage position is located and the convenience point and the horizontal line.

[0039] Preferably, the step of performing power analysis on the priority power supply compartment to obtain the output power of the energy storage container includes:

[0040] The required power supply power YGLi of the batteries in the priority power supply compartment is extracted, and the required power supply power YGLi of the batteries in each priority power supply compartment is added to obtain the total power supply power required by all batteries in the priority power supply compartment, and the total power supply power is marked as the output power of the energy storage container.

[0041] Preferably, the safety regulation based on the output power of the energy storage container includes:

[0042] Extract the output power CL of the energy storage container, and determine whether the output power CL of the energy storage container exceeds the set threshold SYZ; if yes, obtain the excess ratio CBL based on the formula CBL=(CL-SYZ) / SYZ, extract the required power supply power YGLi of the battery in the priority power supply compartment, obtain the final power supply power ZGLi of the battery in the current priority power supply compartment based on the formula ZGLi=(1-CBL)×YGLi, and supply power to the battery in the corresponding priority power supply compartment based on the final power supply power ZGLi; if no, use the required power supply power YGLi as the final power supply power ZGLi to supply power to the battery in the corresponding priority power supply compartment.

[0043] A second aspect of the present invention provides a power supply management method for an energy storage container, comprising the following steps:

[0044] S1: Obtain the basic information of the energy storage container and the peak time period of each time period in the current area;

[0045] S2: Obtain the standard battery removal quantity of the energy storage container in the current time period, and obtain the battery compartment power supply quantity of the energy storage container based on the peak time period and the standard battery removal quantity; extract the stored battery information, and select the priority power supply compartment based on the stored battery information and the battery compartment power supply quantity;

[0046] S3: Perform power analysis on the priority power supply compartment to obtain the output power of the energy storage container, and perform safety regulation based on the output power of the energy storage container.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. The present invention obtains the standard battery withdrawal amount of the energy storage container in the current time period, obtains the power supply quantity of the battery compartment of the energy storage container based on the peak time period and the standard battery withdrawal amount, extracts the storage battery information, selects the priority power supply compartment based on the storage battery information and the power supply quantity of the battery compartment, performs power analysis on the priority power supply compartment to obtain the output power of the energy storage container, and performs safety regulation based on the output power of the energy storage container. This solves the technical problems that in the energy storage container power supply system, the energy storage container is used as a peak-shifting power supply device and dynamically supplies power to the mobile battery according to the regional power consumption situation, and it is difficult to select the priority power supply compartment according to the storage position and power of the mobile battery during dynamic power supply. While alleviating the power supply pressure of the power grid, it also improves the convenience of storing and accessing batteries and reduces energy waste.

[0049] 2. When obtaining the convenience factor, the present invention conducts a comprehensive analysis of the straight-line distance, angle deviation and height between the storage location of the battery and the convenience point to obtain the final value. By comprehensively analyzing these factors, the convenience between the two locations can be more accurately evaluated.

[0050] 3. When obtaining the power supply quantity of the battery compartment, the present invention uses a formula for calculation. The curve of this formula is inclined downward. Specifically, as the peak power factor value increases, the value of the power supply quantity of the battery compartment decreases accordingly. This design is because the value of the peak power factor is obtained based on the peak ratio. The peak ratio indicates the proportion of the peak power time range in the time period. When the peak ratio is larger, it proves that the peak power time range in the current time period accounts for a larger proportion. At this time, in order to alleviate the power supply pressure of the power grid, the power supply quantity of the battery compartment should be reduced, thereby indirectly ensuring the safety of the power grid during the peak power consumption time. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 It is a schematic diagram of the operation steps of the present invention;

[0053] Figure 2 A schematic diagram of the operation steps for selecting a priority power supply compartment in the present invention;

[0054] Figure 3 Schematic diagram of the operation steps for obtaining the convenient factor BJYi of the present invention. DETAILED DESCRIPTION

[0055] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] See also Figure 1-Figure 2 , the first aspect of the present invention provides a power supply management system for an energy storage container, comprising: a power supply management module, and an information acquisition module, a safety monitoring module and a database connected thereto;

[0057] Information acquisition module: used to obtain the basic information of the energy storage container and the peak time period of each time period in the current area; the basic information includes the number of battery compartments, storage battery information, and total power supply power; the storage battery information includes the storage quantity, storage location, and remaining battery power;

[0058] Power supply management module: used to obtain the standard battery removal quantity of the energy storage container in the current time period, and obtain the battery compartment power supply quantity of the energy storage container based on the peak time period and the standard battery removal quantity; extract the storage battery information, and select the priority power supply compartment based on the storage battery information and the battery compartment power supply quantity;

[0059] Safety monitoring module: extract the priority power supply compartments, perform power analysis on the priority power supply compartments to obtain the output power of the energy storage container, and perform safety regulation based on the output power of the energy storage container.

[0060] It should be noted that the battery compartment is a compartment used to store and power the battery.

[0061] For example, in this embodiment, the current time is 19.05, the time period is 19.00-19.20, the peak power consumption time range of the current area is: 6.30-7.30, 12.00-14.00, 8.30-20.30, the number of battery compartments of the current energy storage container is 30, and the number of batteries stored in the current energy storage container is 20;

[0062] The standard battery removal quantity of this energy storage container from 19.00 to 19.20 is 10; because 19.00 to 19.20 are all within the peak power consumption time range of the current area, and the corresponding peak ratio exceeds the preset ratio, the peak power consumption factor DYZ from 19.00 to 19.20 is obtained as 1. Based on the formula , because the number of battery compartments in the current energy storage container is 30, which is not less than the number of battery compartment power supply GDL, the number of battery compartment power supply GDL is updated by adding zeros; wherein BQL is the standard battery removal quantity, and the value of α in this embodiment is 0.36;

[0063] The number of batteries stored in the current energy storage container is 20, which exceeds the number of batteries in the battery compartment GDL. Therefore, the storage positions of the batteries in the current energy storage container are extracted. The maximum value DSCZ of the horizontal height difference SCZi is 40cm, and the average straight-line distance PZL of all storage locations to the convenient point is 50cm:

[0064] If the position of cabin D19 is higher than the convenient point, the horizontal height difference between the center point of cabin D19 and the convenient point SCZi=20cm, the straight-line distance from cabin D19 to the convenient point ZLi=40cm, and the angle JDi=30° between the line between the center point of cabin D19 and the convenient point and the horizontal line, based on the formula BJYi=(δ×exp(ZLi / PZL)+ρ×sin(JDi))×(1+σ×SCZi / DSCZ)=(0.5×exp(40 / 50)+0.5×sin(30°))×(1+0.2×20 / 40)=1.4990; wherein, in this embodiment, δ is taken as 0.5, ρ is taken as 0.5, and σ is taken as 0.2; BJYi is the convenience factor;

[0065] If the position of D6 cabin is not higher than the convenient point, the straight-line distance from D6 cabin to the convenient point is ZLi=50cm, and the angle between the line between the center point of D6 cabin and the convenient point and the horizontal line is JDi=45°, based on the formula BJYi=δ×exp(ZLi / PZL)+ρ×sin(JDi)=0.5×exp(50 / 50)+0.5×sin(45°)=1.7127; where BJYi is the convenience factor;

[0066] Extract the remaining battery power SYDi of each battery stored in the current energy storage container, where D19 compartment is: SYDi=70%,

[0067] D6 compartment: SYDi = 50%;

[0068] The power factor DLYi of each stored battery is obtained based on the formula DLYi=SYDi / BSYD, where D19 compartment is: DLYi=70% / 50%=1.4, and D6 compartment is: DLYi=50% / 50%=1; where BSYD is the remaining power of the standard battery, and BSYD=50%;

[0069] Based on the formula YDZi=β / exp(BJYi)+γ×ln(DLYi+1), the priority power supply factor YDZi of each battery stored in the current energy storage container is obtained, where the D19 compartment is: YDZi=0.5 / exp(1.4990)+0.5×ln(1.4+1)=0.54941, and the D6 compartment is: YDZi=0.5 / exp(1.7127)+0.5×ln(1+1)=0.43676; where, in this embodiment, β is taken as 0.5, and γ is taken as 0.5;

[0070] Sort the priority power supply factors YDZi from large to small, and establish a sorting table; extract the updated battery compartment power supply quantity GDL, and determine in turn whether the serial number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL; if so, mark the compartment where the batteries are stored corresponding to the current serial number and the serial number before the current serial number as the priority power supply compartment; if not, continue to determine the serial number of the priority power supply factor YDZi and the updated battery compartment power supply quantity GDL until the serial number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL, then mark the compartment where the batteries are stored corresponding to the current serial number and the serial number before the current serial number as the priority power supply compartment.

[0071] Extract the required power supply power YGLi of the battery in the priority power supply compartment, add the required power supply power YGLi of the battery in each priority power supply compartment to obtain the total power supply power required by all batteries in the priority power supply compartment, and mark the total power supply power as the output power of the energy storage container; extract the output power CL of the energy storage container, and judge whether the output power CL of the energy storage container exceeds the set threshold SYZ; if yes, obtain the excess ratio CBL based on the formula CBL=(CL-SYZ) / SYZ, extract the required power supply power YGLi of the battery in the priority power supply compartment, obtain the final power supply power ZGLi of the battery in the current priority power supply compartment based on the formula ZGLi=(1-CBL)×YGLi, and supply power to the battery in the corresponding priority power supply compartment based on the final power supply power ZGLi; if no, use the required power supply power YGLi as the final power supply power ZGLi to supply power to the battery in the corresponding priority power supply compartment.

[0072] The basic information of the energy storage container obtained in this application includes:

[0073] The number of battery compartments and the total power supply of the current energy storage container are obtained from the database; the number of batteries stored in the energy storage container and the storage position of each battery are obtained through the weight sensor and the monitoring device, and the remaining battery power of each battery in the energy storage container is obtained through the power monitoring system.

[0074] It should be noted that the monitoring device includes a camera installed in the battery compartment and a camera on the energy storage container.

[0075] It should be noted that using a weight sensor and a monitoring device to obtain information about the storage quantity and storage location of storage batteries is a double insurance operation to obtain information, avoiding inaccurate data due to malfunction of the weight sensor or the monitoring device, which in turn causes errors in subsequent analysis.

[0076] This application obtains the peak time periods of each time period in the current area, including:

[0077] Divide a day into n time periods, obtain the peak power consumption time range of the current area from the database, extract the time periods in sequence, mark the ratio of the peak power consumption time range to the time period as the peak ratio, and determine whether the peak ratio exceeds the preset ratio; if yes, mark the corresponding time period as the peak power consumption time period; if no, mark the corresponding time period as the non-peak power consumption time period; wherein the time periods are divided manually, the preset ratios are obtained through experience, and the peak time periods include the peak power consumption time periods and the non-peak power consumption time periods.

[0078] It should be noted that this step determines whether the peak ratio exceeds the preset ratio, which is used to analyze the situation of the peak power consumption time range in each time period. When the ratio of the peak power consumption time range to the time period exceeds the preset ratio, it indicates that most of the time in the corresponding time period is within the peak power consumption time range.

[0079] In this application, the standard amount of batteries removed from the energy storage container in the current time period is obtained, including:

[0080] Extract the current time, obtain the time period in which the current time is located, extract the daily historical battery removal quantity of the energy storage container in the corresponding time period from the database, and establish a battery removal quantity library;

[0081] Obtain the variance of the battery metering library and determine whether the variance is less than a set value; if yes, obtain the average value of the battery metering library; if no, extract the mode of the data in the battery metering library, remove the number with the largest absolute value of the difference from the mode in the battery metering library, recalculate the variance of the remaining data in the battery metering library, stop the removal operation when the variance of the remaining data in the battery metering library is less than the set value, and obtain the average value of the remaining data in the battery metering library;

[0082] The obtained average value is marked as the standard battery removal amount of the current energy storage container.

[0083] It should be noted that, when obtaining the standard battery extraction quantity, the present invention first cleans the abnormal data of the historical battery extraction quantity through variance judgment. When the variance of the battery extraction quantity library is less than the set value, it indicates that the data in the current battery extraction quantity library is in a relatively stable state; when the variance of the battery extraction quantity library is not less than the set value, it indicates that there are maximum values ​​or minimum values ​​in the data in the current battery extraction quantity library that affect the stability of the data in the battery extraction quantity library. At this time, after removing the abnormal maximum values ​​or minimum values, the data in the battery extraction quantity library can also be in a relatively stable state.

[0084] In this application, the battery compartment power supply quantity of the energy storage container is obtained based on the peak time period and the standard battery withdrawal quantity, including:

[0085] Extract the peak time period of the current time period, and determine whether the peak time period is the peak power consumption period; if yes, mark the peak ratio value as the peak power consumption factor; if no, mark the peak power consumption factor of the current time period as 0;

[0086] Extract the peak power factor DYZ and the standard battery withdrawal amount BQL in the current time period, based on the formula Get the current battery compartment power supply quantity GDL of the energy storage container; where: is the rounding up sign, α is the amplitude adjustment coefficient;

[0087] Extract the number of battery compartments of the current energy storage container and determine whether the number of battery compartments is less than the battery compartment power supply quantity GDL; if yes, use the value of the battery compartment number to update the battery compartment power supply quantity GDL; if no, update the battery compartment power supply quantity GDL by adding zero.

[0088] It should be noted that after obtaining the battery compartment power supply quantity GDL through the formula, a numerical judgment is made on the battery compartment power supply quantity GDL. When the battery compartment quantity is less than the battery compartment power supply quantity GDL, it indicates that the currently calculated battery compartment power supply quantity GDL required by the current energy storage container has exceeded the battery compartments of the current energy storage container. At this time, it is necessary to update the battery compartment power supply quantity GDL according to the value of the battery compartment quantity to avoid errors in subsequent analysis.

[0089] In this application, priority power supply compartments are selected based on the battery storage information and the number of battery compartments that can be powered, including:

[0090] A1: Extract the number of batteries stored in the current energy storage container and determine whether the number of batteries stored exceeds the battery compartment power supply quantity GDL; if yes, jump to A2; if no, mark all the compartments where batteries are stored in the current energy storage container as priority power supply compartments;

[0091] A2: Extract the storage location of each battery in the current energy storage container, and obtain the convenience factor BJYi of each battery storage location to the convenience point; extract the remaining battery power SYDi of each battery in the current energy storage container, and obtain the power factor DLYi of each battery based on the formula DLYi=SYDi / BSYD; where the convenience point is the location of the battery compartment that saves the most effort when storing batteries in the energy storage container, which is set manually on site; i is the number of batteries stored in the current energy storage container; BSYD is the standard remaining battery power set manually;

[0092] A3: Based on the formula YDZi=β / exp(BJYi)+γ×ln(DLYi+1), the priority power supply factor YDZi of each battery stored in the current energy storage container is obtained; where β and γ are proportional adjustment factors, and β+γ=1;

[0093] A4: Sort the priority power supply factors YDZi from large to small and establish a sorting table; extract the updated battery compartment power supply quantity GDL, and determine in turn whether the serial number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL; if so, mark the compartment where the batteries are stored corresponding to the current serial number and the serial number before the current serial number as the priority power supply compartment; if not, continue to determine the serial number of the priority power supply factor YDZi and the updated battery compartment power supply quantity GDL until the serial number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL, then mark the compartment where the batteries are stored corresponding to the current serial number and the serial number before the current serial number as the priority power supply compartment.

[0094] It should be noted that in A1, when the storage quantity exceeds the battery compartment power supply quantity GDL, jump to A2, and the A3 and A4 steps after A2 are analyzed on the basis of A2; when the storage quantity does not exceed the battery compartment power supply quantity GDL, there is no need to perform A3 and A4 steps, and all the compartments where the batteries are stored in the current energy storage container are directly marked as priority power supply compartments.

[0095] It should be noted that, in the obtained convenience factor BJYi, the smaller the value of the convenience factor BJYi, the more convenient it is to store the battery in the corresponding storage location; the larger the value of the power factor DLYi, the better the time and economic benefits brought by giving priority to power supply to the currently stored battery.

[0096] It should be noted that, because A4 is a further analysis based on A2, when judging whether the sequence number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL, there will be no situation where they are not equal. Further explanation is: A4 is based on the fact that the number of stored batteries in the current energy storage container is large and exceeds the battery compartment power supply quantity GDL, and the stored batteries are prioritized and the battery compartments with priority power supply are selected in turn. Because the priority power supply factor YDZi needs to be calculated for each stored battery, the total sequence number of the priority power supply factor YDZi is the number of stored batteries in the current energy storage container. Because the number of stored batteries exceeds the battery compartment power supply quantity GDL, when extracting the sequence numbers of the priority power supply factor YDZi in turn, there will definitely be a situation where the sequence number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL.

[0097] See also Figure 3 In this application, the convenience factor BJYi of each storage location of the battery to reach the convenience point is obtained, including:

[0098] The straight-line distance ZLi from the storage location of each battery in the current energy storage container to the convenient point is extracted in sequence, and the average straight-line distance PZL from the storage location of all batteries to the convenient point is obtained based on the formula PZL=∑(ZLi / i); the angle JDi between the line connecting the center point of the battery compartment where the storage location is located and the convenient point and the horizontal line is extracted;

[0099] Get the horizontal height between the center point of the battery compartment of each storage position and the convenient point, and judge whether the horizontal height of the center point of the battery compartment of the current battery storage position is greater than the horizontal height of the convenient point; if yes, get the horizontal height difference SCZi between the center point of the battery compartment and the convenient point, and get the convenience factor BJYi based on the formula BJYi=(δ×exp(ZLi / PZL)+ρ×sin(JDi))×(1+σ×SCZi / DSCZ); if no, get the convenience factor BJYi based on the formula BJYi=δ×exp(ZLi / PZL)+ρ×sin(JDi); where ∑ is the summation symbol, and the summation range of ∑ is [1, i]; δ and ρ are proportional adjustment factors, and δ+ρ=1; σ is the weight adjustment factor, which is set manually according to the weight of the battery; DSCZ is the maximum value of the horizontal height difference SCZi.

[0100] It should be noted that the straight-line distance ZLi from the storage position of the battery to the convenient point is further understood as: the straight-line distance from the center point of the battery compartment door where the storage position of the battery is located to the convenient point.

[0101] It should be noted that σ is a weight adjustment factor, which is manually set according to the weight of the battery, and the heavier the battery, the larger the value of the designed weight adjustment factor σ.

[0102] A second aspect of the present invention provides a power supply management method for an energy storage container, comprising the following steps:

[0103] S1: Obtain the basic information of the energy storage container and the peak time period of each time period in the current area;

[0104] S2: Obtain the standard battery removal quantity of the energy storage container in the current time period, and obtain the battery compartment power supply quantity of the energy storage container based on the peak time period and the standard battery removal quantity; extract the stored battery information, and select the priority power supply compartment based on the stored battery information and the battery compartment power supply quantity;

[0105] S3: Perform power analysis on the priority power supply compartment to obtain the output power of the energy storage container, and perform safety regulation based on the output power of the energy storage container.

[0106] Part of the data in the above formula is calculated by removing the dimension and taking its numerical value. The formula is a formula closest to the actual situation obtained by software simulation of a large amount of collected data; the preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained through simulation of a large amount of data.

[0107] Working principle of the present invention:

[0108] Obtain the basic information of the energy storage container and the peak time period of each time period in the current area; obtain the standard battery removal amount of the energy storage container in the current time period, extract the peak time period of the current time period, and determine whether the peak time period is the peak power consumption time period; if yes, mark the peak ratio value as the peak power consumption factor; if no, mark the peak power consumption factor of the current time period as 0;

[0109] Extract the peak power factor and standard battery withdrawal amount in the current time period, and use the formula to obtain the current battery compartment power supply quantity of the energy storage container; extract the storage battery information, and select the priority power supply compartment based on the storage battery information and the battery compartment power supply quantity; perform power analysis on the priority power supply compartment to obtain the output power of the energy storage container, and perform safety regulation based on the output power of the energy storage container.

[0110] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A power supply management system for an energy storage container, characterized in that: include: Power supply management module, and the information acquisition module, safety monitoring module and database connected thereto; The information acquisition module is used to obtain the basic information of the energy storage container and the peak time period of each time period in the current area; wherein the basic information includes the number of battery compartments, storage battery information, and total power supply power; the storage battery information includes the storage quantity, storage location, and remaining battery power; The power supply management module is used to obtain the standard battery removal quantity of the energy storage container in the current time period, and obtain the battery compartment power supply quantity of the energy storage container based on the peak time period and the standard battery removal quantity; extract the storage battery information, and select the priority power supply compartment based on the storage battery information and the battery compartment power supply quantity; The safety monitoring module extracts the priority power supply compartment, performs power analysis on the priority power supply compartment to obtain the output power of the energy storage container, and performs safety regulation based on the output power of the energy storage container; The obtaining of the peak time period of each time period in the current area includes: Divide a day into n time periods, obtain the peak power consumption time range of the current area from the database, extract the time periods in sequence, mark the proportion of the peak power consumption time range to the time period as the peak proportion, and determine whether the peak proportion exceeds the preset proportion; if yes, mark the corresponding time period as the peak power consumption time period; if no, mark the corresponding time period as the non-peak power consumption time period; wherein the peak time period includes the peak power consumption time period and the non-peak power consumption time period; The step of obtaining the standard amount of batteries removed from the energy storage container in the current time period includes: Extract the current time, obtain the time period in which the current time is located, extract the daily historical battery removal amount of the energy storage container in the said time period from the database, and establish a battery removal amount library; Obtain the variance of the battery quantity library, and determine whether the variance is less than a set value; if yes, obtain the average value of the battery quantity library; if no, extract the mode of the data in the battery quantity library, remove the number with the largest absolute value of the difference from the mode in the battery quantity library, recalculate the variance of the remaining data in the battery quantity library, and stop the removal operation when the variance of the remaining data in the battery quantity library is less than the set value, and obtain the average value of the remaining data in the battery quantity library; The obtained average value is marked as the standard battery removal amount of the current energy storage container; The method of obtaining the power supply quantity of the battery compartment of the energy storage container based on the peak time period and the standard battery removal quantity includes: Extract the peak time period of the current time period, and determine whether the peak time period is a peak power consumption period; if yes, mark the peak ratio value as a peak power consumption factor; if no, mark the peak power consumption factor of the current time period as 0; Extract the peak power factor DYZ and the standard battery withdrawal amount BQL in the current time period, and obtain the battery compartment power supply quantity GDL of the current energy storage container based on the formula GDL=⌈BQL / exp(α×DYZ)⌉; where, is the rounding up sign, α is the amplitude adjustment coefficient; Extract the number of battery compartments of the current energy storage container and determine whether the number of battery compartments is less than the battery compartment power supply quantity GDL; if yes, use the value of the battery compartment number to update the battery compartment power supply quantity GDL; if no, update the battery compartment power supply quantity GDL by adding zero.

2. A power supply management system for an energy storage container according to claim 1, characterized in that: The basic information of the energy storage container is obtained, including: The number of battery compartments and the total power supply of the current energy storage container are obtained from the database; the number of batteries stored in the energy storage container and the storage position of each battery are obtained through the weight sensor and the monitoring device, and the remaining battery power of each battery in the energy storage container is obtained through the power monitoring system.

3. A power supply management system for an energy storage container according to claim 1, characterized in that: The selecting of the priority power supply compartment based on the storage battery information and the power supply quantity of the battery compartment includes: A1: Extract the number of batteries stored in the current energy storage container and determine whether the number of batteries stored exceeds the battery compartment power supply quantity GDL; if yes, jump to A2; if no, mark all the compartments where batteries are stored in the current energy storage container as priority power supply compartments; A2: Extract the storage location of each battery in the current energy storage container, and obtain the convenience factor BJYi of each battery storage location to the convenience point; extract the remaining battery power SYDi of each battery in the current energy storage container, and obtain the power factor DLYi of each battery based on the formula DLYi=SYDi / BSYD; where the convenience point is the location of the battery compartment that saves the most effort when the energy storage container stores batteries; i is the number of batteries stored in the current energy storage container; BSYD is the remaining power of the standard battery; A3: Based on the formula YDZi=β / exp(BJYi)+γ×ln(DLYi+1), the priority power supply factor YDZi of each battery stored in the current energy storage container is obtained; where β and γ are proportional adjustment factors, and β+γ=1; A4: Sort the priority power supply factors YDZi from large to small, and establish a sorting table; extract the updated battery compartment power supply quantity GDL, and determine in turn whether the serial number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL; if so, mark the compartment where the batteries are stored corresponding to the current serial number and the serial number before the current serial number as the priority power supply compartment; if not, continue to determine the serial number of the priority power supply factor YDZi and the updated battery compartment power supply quantity GDL until the serial number of the priority power supply factor YDZi is equal to the updated battery compartment power supply quantity GDL, then mark the compartment where the batteries are stored corresponding to the current serial number and the serial number before the current serial number as the priority power supply compartment.

4. A power supply management system for an energy storage container according to claim 3, characterized in that: The method of obtaining the convenience factor BJYi of each storage location of the stored batteries to reach the convenience point includes: Sequentially extract the straight-line distance ZLi from the storage location of each battery in the current energy storage container to the convenient point, and obtain the average straight-line distance PZL from the storage location of all batteries to the convenient point based on the formula PZL=∑(ZLi / i); extract the angle JDi between the line connecting the center point of the battery compartment where the storage location is located and the convenient point and the horizontal line; Get the horizontal height between the center point of the battery compartment of each storage position and the convenient point, and judge whether the horizontal height of the center point of the battery compartment of the current battery storage position is greater than the horizontal height of the convenient point; if yes, get the horizontal height difference SCZi between the center point of the battery compartment and the convenient point, and get the convenience factor BJYi based on the formula BJYi=(δ×exp(ZLi / PZL)+ρ×sin(JDi))×(1+σ×SCZi / DSCZ); if no, get the convenience factor BJYi based on the formula BJYi=δ×exp(ZLi / PZL)+ρ×sin(JDi); where ∑ is the summation symbol, and the summation range of ∑ is [1, i]; δ and ρ are proportional adjustment factors, and δ+ρ=1; σ is the weight adjustment factor; DSCZ is the maximum value of the horizontal height difference SCZi.

5. A power supply management system for an energy storage container according to claim 3, characterized in that: The power analysis of the priority power supply compartment to obtain the output power of the energy storage container includes: The required power supply power YGLi of the batteries in the priority power supply compartment is extracted, and the required power supply power YGLi of the batteries in each priority power supply compartment is added to obtain the total power supply power required by all batteries in the priority power supply compartment, and the total power supply power is marked as the output power of the energy storage container.

6. A power supply management system for an energy storage container according to claim 5, characterized in that: The safety regulation based on the output power of the energy storage container includes: Extract the output power CL of the energy storage container, and determine whether the output power CL of the energy storage container exceeds the set threshold SYZ; if yes, obtain the excess ratio CBL based on the formula CBL=(CL-SYZ) / SYZ, extract the required power supply power YGLi of the battery in the priority power supply compartment, obtain the final power supply power ZGLi of the battery in the current priority power supply compartment based on the formula ZGLi=(1-CBL)×YGLi, and supply power to the battery in the corresponding priority power supply compartment based on the final power supply power ZGLi; if no, use the required power supply power YGLi as the final power supply power ZGLi to supply power to the battery in the corresponding priority power supply compartment.

7. A power supply management method for an energy storage container, based on the power supply management system for an energy storage container according to any one of claims 1 to 6, characterized in that: S1: Obtain the basic information of the energy storage container and the peak time period of each time period in the current area; S2: Obtain the standard battery removal quantity of the energy storage container in the current time period, and obtain the power supply quantity of the battery compartment of the energy storage container based on the peak time period and the standard battery removal quantity; Extract the storage battery information, and select the priority power supply compartment based on the storage battery information and the power supply quantity of the battery compartment; S3: Perform power analysis on the priority power supply compartment to obtain the output power of the energy storage container, and perform safety regulation based on the output power of the energy storage container.

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