Energy storage power supply electric quantity management method and system based on BMS technology

Abstract

The invention relates to the technical field of energy storage power supplies, in particular to an energy storage power supply electric quantity management method and system based on the BMS technology, and the method comprises the steps: receiving an electric quantity management instruction, determining an electric quantity management environment based on the electric quantity management instruction, obtaining a fault electric quantity group, a fault voltage group, a fault current group and a fault temperature group through a fault data set, the method comprises the following steps: acquiring coordinates of an energy storage power supply by using a positioning unit, calculating a fault early warning index by using a power supply control center and an initial data packet, acquiring the number of started batteries and average historical power by using a storage unit, and performing alternative discharge operation on an energy storage battery set based on # imgabs 0 # acquisition units, an early warning data packet and the number of started batteries to obtain # imgabs 1 # waiting units; and calculating the expected maintenance time, integrating the expected maintenance time into a reminding data packet by using a communication unit, and sending the reminding data packet to a pre-constructed battery client to complete the electric quantity management of the energy storage battery. The power supply stability of the energy storage power supply can be improved, and the failure rate of the energy storage power supply is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage power supplies, and in particular to a method, system, electronic device, and computer-readable storage medium for managing energy storage power supplies based on BMS technology. Background Art

[0002] With the development of renewable energy technologies, battery management systems (BMSs) are playing an increasingly important role in energy management. They efficiently regulate the charging and discharging processes of energy storage power supplies, optimize battery life, and improve system safety. With the continuous advancement of BMS technology, the management requirements for energy storage power supplies are becoming increasingly complex. Using BMSs to improve the stability of energy storage power supplies and identify potential faults has become a key to the development and advancement of energy storage power supplies.

[0003] In the prior art, the power management method based on the battery management system usually determines whether the energy storage power supply has a fault by monitoring the overall temperature of the energy storage power supply and the intensity of the output current, and regulates the power supply process of the energy storage power supply according to the monitored temperature and current intensity.

[0004] Although existing battery management systems can manage and regulate energy storage power supplies, the indicators used by existing technologies for regulating energy storage power supplies are usually fixed. When faced with different environments, the effectiveness of regulation may be greatly reduced. For example, the electricity usage habits of different users and the environments in different regions will affect the operating status of the energy storage power supply. Therefore, simply monitoring current and temperature is not enough to accurately manage energy storage power supplies for different users and in different environments. Therefore, how to accurately manage and regulate energy storage power supplies in different environments and improve the stability of energy storage power supply has become an urgent problem to be solved. Summary of the Invention

[0005] The present invention provides a method for managing the power of an energy storage power supply based on BMS technology and a computer-readable storage medium, the main purpose of which is to improve the stability of the power supply of the energy storage power supply and reduce the failure rate of the energy storage power supply.

[0006] To achieve the above object, the present invention provides a method for energy storage power supply power management based on BMS technology, comprising: receiving a power management instruction, and determining a power management environment based on the power management instruction, wherein the power management environment includes: energy storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes Battery units, and the battery units correspond to the acquisition units one by one. The battery units include: battery monomers and charge and discharge switches; obtain the fault data set in the storage unit, and use the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes Fault data, and the fault data includes: battery power, battery voltage, battery current and battery temperature; use the positioning unit to obtain the coordinates of the energy storage power supply, use the communication unit to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and send the initial data packet to the pre-built power control center; when the power control center receives the initial data packet, it uses the power control center and the initial data packet to calculate the fault warning index, uses the power control center to integrate the fault warning index into a warning data packet and sends the warning data packet to the communication unit; after the communication unit receives the warning data packet, it uses the storage unit to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting units; according to Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power; the communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery.

[0007] Optionally, the method of using the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group includes: using the fault data set The average fault power is calculated based on the battery power, where the average fault power is The average value of battery charge; The battery capacity dispersion is calculated based on the battery capacity. The calculation formula is as follows: ,in, is the electrical dispersion, for Battery charge Battery charge, is the average fault power; the average fault power and power dispersion are combined into a fault power group; and the fault voltage group, fault current group and fault temperature group are obtained based on the fault data set.

[0008] Optionally, the calculation of the fault warning index using the power control center and the initial data packet includes: obtaining a central database and an energy storage power map of the power control center, confirming a central power point in the energy storage power map based on the energy storage power coordinates in the initial data packet; constructing a reference data circle in the energy storage power map with the central power point as the center, wherein a reference radius of the reference data circle is preset, and the energy storage power map includes multiple reference power points; obtaining a fault warning index using the energy storage power map, the multiple reference power points, the central power point, and the reference data circle. target power points and Target distance, where the target power point and the target distance correspond one to one, the target power point is the reference power point located in the reference data circle on the energy storage power map, and the target distance is the distance between the target power point and the center power point on the energy storage power map; according to The target power points are retrieved from the central database reference datasets, Each reference data set in the reference data set performs the following operations: obtain a reference power group, a reference voltage group, a reference current group, and a reference temperature group based on the reference data set; summarize the reference power group, the reference voltage group, the reference current group, and the reference temperature group respectively to obtain Reference power groups, Reference voltage groups, Reference current groups and reference temperature groups; using Reference power groups and The corrected average power and the corrected power dispersion are calculated based on the target distance, wherein the reference power group includes: reference fault power and reference power dispersion; the target fault power is calculated using the corrected average power and the average fault power in the initial data packet, wherein the target fault power is the average of the corrected average power and the average fault power; the target power dispersion is calculated using the corrected power dispersion and the power dispersion in the initial data packet, wherein the target power dispersion is the average of the corrected power dispersion and the power dispersion; based on The reference voltage group obtains the target fault voltage and target voltage dispersion, based on The target fault current and target current dispersion are obtained by using a reference current group. The target fault temperature and target temperature dispersion are obtained from the reference temperature groups; the fault warning index is calculated using the target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature and target temperature dispersion.

[0009] Optionally, the corrected average power calculation formula is as follows: ,in, To correct the average power, and They are The first The reference power dispersion and reference fault power of each reference power group, for The first The target distance corresponding to the reference power group, is the reference radius, is a natural constant.

[0010] Optionally, the calculation formula for the corrected electrical quantity dispersion is as follows: ,in, To correct the electrical quantity dispersion.

[0011] Optionally, the calculation of the fault warning index using the target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature, and target temperature dispersion includes: obtaining the ambient temperature using a pre-built external thermometer; and calculating the fault warning index based on the ambient temperature, target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature, and target temperature dispersion. The calculation formula is as follows: ,in, is the fault warning index, and are the target fault temperature and target temperature dispersion, respectively. is the ambient temperature, and are the target fault power and target power dispersion respectively, and are the target fault voltage and target voltage dispersion, respectively. and are the target fault current and target current dispersion, is the natural logarithm.

[0012] Optionally, the method of obtaining the number of battery starts and the average historical power using a storage unit includes: obtaining an operating data set in the storage unit, wherein the operating data set includes multiple discharge powers; confirming a maximum historical power and an average historical power using the multiple discharge powers, wherein the maximum historical power is the largest discharge power among the multiple discharge powers, and the average historical power is the average of the multiple discharge powers; obtaining a maximum full-charge voltage and a maximum discharge current of the battery unit, and calculating the maximum discharge power using the maximum full-charge voltage and the maximum discharge current, wherein the maximum discharge power is the product of the maximum full-charge voltage and the maximum discharge current; and calculating the number of battery starts based on the maximum historical power and the maximum discharge power, wherein the calculation formula is as follows: ,in, The number of battery starts. is the maximum historical power, is the maximum discharge power, Represents a round-up operation.

[0013] Optionally, the The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting units, including: the number of batteries started, the corresponding number of energy storage battery sets Confirmed in the battery cells Preparation units, of which = ; right Each of the preparation units performs the following operations: performs a conduction operation on the charge and discharge switch corresponding to the preparation unit to obtain a discharge unit; uses the acquisition unit corresponding to the discharge unit to monitor the discharge power, discharge voltage, discharge current and discharge temperature of the discharge unit in real time; calculates a real-time discharge index based on the ambient temperature, discharge power, target power dispersion, discharge voltage, target voltage dispersion, discharge current, target current dispersion, discharge temperature and target temperature dispersion; compares the real-time discharge index with the fault warning index in the warning data packet and compares the discharge power with the preset power threshold; when the real-time discharge index is greater than the fault warning index or the discharge power is less than the power threshold, performs a closing operation on the charge and discharge switch corresponding to the discharge unit to obtain a waiting unit, and randomly identifies a battery cell in the energy storage battery set as a preparation unit, and returns to the step of performing a conduction operation on the charge and discharge switch corresponding to the preparation unit until the number of waiting units reaches - a; will The discharge unit is Waiting units, and sum up the waiting units to get Waiting unit.

[0014] Optionally, the basis Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power, including: Each of the waiting units performs the following operations: performing a conduction operation on the charge and discharge switch corresponding to the waiting unit to obtain a residual unit, performing a detection operation on the residual unit using the acquisition unit corresponding to the residual unit to obtain the remaining power and the remaining voltage; summing up the remaining power and the remaining voltage respectively to obtain Remaining power and Remaining voltage; using the pre-acquired maximum capacity, power threshold, Remaining power, The expected holding time is calculated based on the residual voltage and average historical power. The calculation formula is as follows: ,in, For the expected maintenance time, for The remaining power Remaining power, is the power threshold, For maximum capacity, is the average historical power, for The residual voltage A residual voltage.

[0015] To achieve the above object, the present invention also provides an energy storage power supply power management system based on BMS technology, including: a management environment confirmation module, which is used to receive power management instructions and confirm the power management environment based on the power management instructions, wherein the power management environment includes: energy storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes The battery unit corresponds to the acquisition unit one by one. The battery unit includes: a battery cell and a charge and discharge switch; a fault data analysis module is used to obtain the fault data set in the storage unit, and use the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes Fault data, and the fault data includes: battery power, battery voltage, battery current and battery temperature. The positioning unit is used to obtain the coordinates of the energy storage power supply, and the communication unit is used to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and the initial data packet is sent to the pre-built power control center; the energy storage power supply discharge module is used to calculate the fault warning index using the power control center and the initial data packet when the power control center receives the initial data packet, and integrate the fault warning index into a warning data packet using the power control center and send the warning data packet to the communication unit; after the communication unit receives the warning data packet, the storage unit is used to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting unit; maintenance time estimation module, used to Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power. The communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery.

[0016] In order to solve the above problems, the present invention also provides an electronic device, which includes: a memory storing at least one instruction; and a processor executing the instructions stored in the memory to implement the above-mentioned energy storage power supply power management method based on BMS technology.

[0017] In order to solve the above problems, the present invention also provides a computer-readable storage medium, which stores at least one instruction. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned energy storage power supply power management method based on BMS technology.

[0018] The present invention is to solve the problem described in the background technology. The present invention receives a power management instruction and determines a power management environment based on the power management instruction. The power management environment includes: a storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes The battery unit has a one-to-one correspondence with the acquisition unit. The battery unit includes: a battery cell and a charge and discharge switch. It can be seen that the embodiment of the present invention provides a systematic working environment for each unit by building a complete power management environment, ensuring the systematic nature of data acquisition and processing, and then obtaining the fault data set in the storage unit. The fault data set is used to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes Fault data, and the fault data includes: battery power, battery voltage, battery current and battery temperature. It can be seen that the embodiment of the present invention uses the fault data set stored in the storage unit in the past period of time to provide a reference for the subsequent calculation of the fault warning index, thereby improving the accuracy of fault warning for the energy storage power supply and reducing the failure rate of the energy storage power supply. The positioning unit is used to obtain the coordinates of the energy storage power supply, and the communication unit is used to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and the initial data packet is sent to the pre-built power control center. It can be seen that the embodiment of the present invention obtains the coordinates of the energy storage power supply through the positioning unit, which is convenient for subsequent retrieval of the fault data of other nearby energy storage power supplies in the energy storage power supply map of the power control center according to the coordinates of the energy storage power supply, and uses the fault data of other nearby energy storage power supplies to provide a reference for the subsequent calculation of the fault warning index. The accuracy of fault warning for energy storage power supply is improved, and the failure rate of energy storage power supply is reduced. When the power control center receives the initial data packet, the power control center and the initial data packet are used to calculate the fault warning index, and the power control center is used to integrate the fault warning index into a warning data packet and send the warning data packet to the communication unit. It can be seen that the embodiment of the present invention uses the fault data set in the initial data packet to calculate the fault warning index, taking into account the influence of the user's usage habits on the energy storage power supply, and at the same time uses the power control center to obtain the fault data of other nearby energy storage power supplies as a reference, and also takes into account the influence of environmental factors on the energy storage power supply, so that the calculated fault warning index is more accurate, improving the accuracy of fault warning for energy storage power supply, and reducing the failure rate of energy storage power supply. After the communication unit receives the warning data packet, the storage unit is used to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain It can be seen that the embodiment of the present invention performs a relay discharge operation on the energy storage battery set, so that The battery units take over to supply power, which improves the stability of the energy storage power supply. Real-time monitoring of the acquisition unit The power supply of each battery unit is monitored, and the fault warning index in the warning data packet is referred to, so as to cut off the power supply in time before the battery unit fails, thereby reducing the failure rate of the energy storage power supply. Collection units, The expected maintenance time is calculated based on the waiting unit and the average historical power. The communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery. It can be seen that the embodiment of the present invention calculates the expected maintenance time to promptly remind the user of the length of time the energy storage battery can supply power, which facilitates the user to make timely adjustments based on power demand, thereby improving the stability of the energy storage power supply and reducing the failure rate of the energy storage power supply. Therefore, the present invention can improve the stability of the energy storage power supply and reduce the failure rate of the energy storage power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A flow chart of a method for managing energy storage power supply power based on BMS technology provided in one embodiment of the present invention; Figure 2 A functional module diagram of an energy storage power supply management system based on BMS technology provided by one embodiment of the present invention; Figure 3 A schematic structural diagram of an electronic device for implementing the energy storage power supply power management method based on BMS technology provided in one embodiment of the present invention.

[0020] Description of reference numerals: 1. Electronic device; 10. Processor; 11. Storage; 12. Bus.

[0021] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The present embodiment provides a method for managing the power of an energy storage power supply based on BMS technology. The execution entity of the BMS-based energy storage power supply management method includes, but is not limited to, at least one of electronic devices such as a server or a terminal that can be configured to execute the method provided by the present embodiment. In other words, the BMS-based energy storage power supply management method can be executed by software or hardware installed on a terminal device or a server device, and the software can be a blockchain platform. The server includes, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0024] Reference Figure 1 FIG2 is a flow chart of a method for managing energy storage power supply based on BMS technology according to an embodiment of the present invention. In this embodiment, the method for managing energy storage power supply based on BMS technology includes: S1, receiving an energy management instruction, and determining an energy management environment based on the energy management instruction, wherein the energy management environment includes: an energy storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes There are battery units, and the battery units correspond to the collection units one by one. The battery units include: battery cells and charge and discharge switches.

[0025] It should be explained that the power management instruction is initiated by the user of the energy storage power supply when the energy storage power supply is turned on. For example, Xiao Zhang is a user of the energy storage power supply. Xiao Zhang is also a camping enthusiast. Because he needs electricity when camping (for lighting or cooking, etc.), Xiao Zhang brings the energy storage power supply with him. When Xiao Zhang turns on the energy storage power supply, in order to improve the stability of the energy storage power supply during power supply and reduce the failure rate of the energy storage power supply, the energy storage power supply automatically initiates the power management instruction at startup. The energy storage power supply is a device that can store and release electrical energy and is intelligently controlled by a built-in BMS (Battery Management System).

[0026] In the embodiment of the present invention, the energy storage power supply includes: an energy storage battery set and a BMS battery system. The device for storing and supplying energy is the energy storage battery set, which includes battery cells, and The battery cells are connected in series and include a battery cell and a charge / discharge switch. Optionally, the battery cell is a lithium battery. The charge / discharge switch is a MOSFET (metal oxide semiconductor field effect transistor) connected to the battery cell. Its primary function is to control the power supply status of the battery cell. Under the control of the central control terminal, the charge / discharge switch can be switched between an on and off state. When the charge / discharge switch is in the on state, the current path between the battery cell and the external load is connected, allowing the battery cell to supply power. When the charge / discharge switch is in the off state, the current path between the battery cell and the external load is disconnected, preventing the battery cell from supplying power. The device for controlling the energy storage battery pack is the BMS battery system. The BMS battery system is a circuit board connected to the energy storage battery pack and integrating multiple components and circuits. The BMS battery system includes a central control terminal, a storage unit, a positioning unit, and a communication unit. The central control terminal is a single-chip microcomputer in the BMS battery system. Its primary function is to receive and process signals from each cell in the BMS battery system and control each cell in the BMS battery system. The acquisition unit is a component within the BMS battery system that integrates a battery monitoring IC (such as the BQ76920) and a current monitoring sensor (such as the ACS712). Its input is connected to the battery cells, and its output is connected to the central control system. Its primary function is to collect battery cell charge, voltage, current, and temperature data and transmit this data to the central control system and the storage unit. The storage unit, a memory device within the BMS battery system, stores the battery cell charge, voltage, current, and temperature data collected by the acquisition unit over a period of time and records the output power of the energy storage power supply during this period. The positioning unit is a GPS chip within the BMS battery system, primarily used to locate the energy storage battery in the real world. The communication unit is a Wi-Fi module within the BMS battery system, primarily used to facilitate data transmission between the central control system and the power control center. For detailed applications of the power control center, please refer to the following examples.

[0027] It should be understood that the technology used by the acquisition unit to collect battery cell power data, voltage data, current data, and temperature data is conventional and will not be further described here. Power data refers to the state of charge (SOC) value of the battery cell. For example, a power data value of 30% indicates that the SOC value is 30%, meaning that the battery cell has 30% of its remaining power. Voltage data, current data, and temperature data refer to the voltage and current values of the battery cell and the surface temperature of the battery cell, respectively, when the battery is powered.

[0028] In detail, the receiving of the power management instruction and the confirmation of the power management environment based on the power management instruction include: after receiving the power management instruction, self-testing the After the self-test is passed, the corresponding The initial state of each charge and discharge switch is closed. When the setting is completed, the energy storage battery set, The power management environment of each acquisition unit, storage unit, positioning unit and communication unit.

[0029] S2. Obtain the fault data set in the storage unit, and use the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes The fault data includes battery power, battery voltage, battery current and battery temperature.

[0030] It should be explained that the acquisition of the fault data set in the storage unit refers to: reading the fault data set from the storage unit. The fault data set includes Fault data refers to battery cell parameters stored by the storage unit when the energy storage power supply fails over a period of time. The battery cell parameters include battery charge, battery voltage, battery current, and battery temperature. Battery charge, battery voltage, battery current, and battery temperature respectively refer to the battery charge data, voltage data, current data, and temperature data collected by the collection unit when the energy storage power supply fails. The energy storage power supply failure refers to abnormal conditions such as a short circuit or power outage in the energy storage power supply.

[0031] For example, when the central control end of the energy storage power supply detects that a short circuit occurs in the energy storage power supply during the power supply process, the power data, voltage data, current data and temperature data of the battery cell collected by the collection unit at this time will be integrated into fault data and stored in the fault data set of the storage unit.

[0032] In detail, the method of using the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group includes: using the fault data set The average fault power is calculated based on the battery power, where the average fault power is The average value of battery charge; The battery capacity dispersion is calculated based on the battery capacity. The calculation formula is as follows: ,in, is the electrical dispersion, for Battery charge Battery charge, is the average fault power; the average fault power and power dispersion are combined into a fault power group; and the fault voltage group, fault current group and fault temperature group are obtained based on the fault data set.

[0033] It should be understood that the electrical dispersion reflects The discrete degree of battery power, when The higher the dispersion of battery power, the The more scattered the battery power data is, the less regular it is, the lower its reference value is, and the lower its weight is in the subsequent calculation of the fault warning index. The lower the dispersion of battery power, the The battery power follows a certain rule, the higher the reference value, for example, if The battery levels are all near the mean failure level, reflecting a pattern: when a battery cell's level reaches the mean failure level, it's likely to fail. The mean failure level primarily reflects the level at which a battery cell is most likely to fail.

[0034] It is understandable that the method of obtaining the fault voltage group, the fault current group and the fault temperature group based on the fault data set is the same as the method of obtaining the fault power group using the fault data set, and will not be repeated here.

[0035] S3. Use the positioning unit to obtain the coordinates of the energy storage power supply, use the communication unit to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and send the initial data packet to the pre-built power control center.

[0036] It should be understood that the energy storage power supply coordinates refer to the longitude and latitude of the energy storage power supply in the real world. Optionally, the positioning unit uses the Beidou high-precision positioning service of Baidu Maps to obtain the energy storage power supply coordinates.

[0037] It should be explained that the initial data packet refers to a data packet that stores the energy storage power supply coordinates, fault power group, fault voltage group, fault current group and fault temperature group, and the use of the communication unit to integrate the energy storage power supply coordinates, fault power group, fault voltage group, fault current group and fault temperature group into the initial data packet means converting the values of the energy storage power supply coordinates, fault power group, fault voltage group, fault current group and fault temperature group into data and storing them in the data packet, and the technology of using the communication unit to integrate the energy storage power supply coordinates, fault power group, fault voltage group, fault current group and fault temperature group into the initial data packet is an existing technology and will not be repeated here.

[0038] It should be explained that the power control center is a software platform that integrates a central database and an energy storage power map. Optionally, the power control center is located in a cloud server, and the power control center is used to receive and analyze the initial data packet from the communication unit and feed back the analysis results to the communication unit.

[0039] S4. When the power control center receives the initial data packet, it calculates the fault warning index using the power control center and the initial data packet, integrates the fault warning index into a warning data packet using the power control center, and sends the warning data packet to the communication unit.

[0040] It should be explained that the warning data packet refers to a data packet that stores a fault warning index, and the use of the power control center to integrate the fault warning index into a warning data packet means converting the numerical value of the fault warning index into data and storing it in the data packet, and the technology of using the power control center to integrate the fault warning index into a warning data packet is an existing technology and will not be repeated here.

[0041] In detail, the method of calculating the fault warning index using the power control center and the initial data packet includes: obtaining the central database and the energy storage power map of the power control center, confirming the central power point in the energy storage power map based on the energy storage power coordinates in the initial data packet; constructing a reference data circle in the energy storage power map with the central power point as the center, wherein a reference radius of the reference data circle is preset, and the energy storage power map includes multiple reference power points; obtaining the fault warning index using the energy storage power map, the multiple reference power points, the central power point and the reference data circle target power points and Target distance, where the target power point and the target distance correspond one to one, the target power point is the reference power point located in the reference data circle on the energy storage power map, and the target distance is the distance between the target power point and the center power point on the energy storage power map; according to The target power points are retrieved from the central database reference datasets, Each reference data set in the reference data set performs the following operations: obtain a reference power group, a reference voltage group, a reference current group, and a reference temperature group based on the reference data set; summarize the reference power group, the reference voltage group, the reference current group, and the reference temperature group respectively to obtain Reference power groups, Reference voltage groups, Reference current groups and reference temperature groups; using Reference power groups and The corrected average power and the corrected power dispersion are calculated based on the target distance, wherein the reference power group includes: reference fault power and reference power dispersion; the target fault power is calculated using the corrected average power and the average fault power in the initial data packet, wherein the target fault power is the average of the corrected average power and the average fault power; the target power dispersion is calculated using the corrected power dispersion and the power dispersion in the initial data packet, wherein the target power dispersion is the average of the corrected power dispersion and the power dispersion; based on The reference voltage group obtains the target fault voltage and target voltage dispersion, based on The target fault current and target current dispersion are obtained by using a reference current group. The target fault temperature and target temperature dispersion are obtained from the reference temperature groups; the fault warning index is calculated using the target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature and target temperature dispersion.

[0042] It should be noted that the power control center has a built-in central database and energy storage power map. Acquiring the central database and energy storage power map of the power control center refers to reading the central database and energy storage power map in the power control center. Optionally, the energy storage power map is a Baidu map with multiple reference power points marked.

[0043] Importantly, the scale of the energy storage power source map is fixed. Optionally, the scale of the energy storage power source map is set to 1:10000.

[0044] For example, while producing energy storage power supplies, a company producing energy storage power supplies also builds a power control center in a cloud server to assist users in using energy storage power supplies. The power control center has a built-in central database for collecting data (power data, voltage data, current data, and temperature data) of battery cells in the energy storage power supplies of each user when a failure occurs. These data are integrated into a reference data set and stored in the central database to provide a reference for calculating a fault warning index for the energy storage power supply. At the same time, the power control center also has a built-in energy storage power supply map. The energy storage power supply map is built using existing maps (such as Baidu Maps) and the coordinates of each energy storage power supply in the real world: after obtaining the latitude and longitude of a certain energy storage power supply in the real world, a point is mapped on the Baidu map according to the latitude and longitude. This point is the reference power supply point, and the energy storage power supply map is a Baidu map with multiple reference power supply points marked on it. When it is necessary to calculate the fault warning index of Xiao Zhang's energy storage power supply, a point will be mapped on the energy storage power supply map based on the coordinates of Xiao Zhang's energy storage power supply. This point is the central power supply point (for example, when Xiao Zhang's coordinates are 23.144092 north latitude and 113.272559 east longitude, the point is found on Baidu Maps to be located at the entrance of the Guangzhou Museum, and the point is marked as the central power supply point on Baidu Maps). If the reference radius is set to 30 cm, a circle with a radius of 30 cm is drawn on the energy storage power supply map with the central power supply point as the center. This circle is the reference data circle, and the reference power supply point located in the reference data circle on the energy storage power supply map is used as the target power supply point. If the distance between the central power supply point and the target power supply point on the energy storage power supply map is 2 cm, then the target distance is 2 cm. Since each target power supply point corresponds to a user's energy storage power supply, the reference data set corresponding to the user information of the energy storage power supply corresponding to the target power supply point can be retrieved from the central database.

[0045] It should be understood that the method of obtaining the reference power group, reference voltage group, reference current group and reference temperature group based on the reference data set is the same as the method of obtaining the fault power group, fault voltage group, fault current group and fault temperature group using the fault data set, and will not be repeated here.

[0046] It should be explained that the reference fault power reflects the power level at which other users' energy storage batteries are prone to failure. The reference power dispersion reflects the degree of dispersion of multiple power data recorded when other users' energy storage batteries have multiple failures.

[0047] In detail, the calculation formula of the corrected average power is as follows: ,in, To correct the average power, and They are The first The reference power dispersion and reference fault power of each reference power group, for The first The target distance corresponding to the reference power group, is the reference radius, is a natural constant.

[0048] In detail, the calculation formula for the corrected electrical quantity dispersion is as follows: ,in, To correct the electrical quantity dispersion.

[0049] Generally speaking, the closer the target distance between two energy storage power sources is, the more similar the real-world environments of the two energy storage power sources are. The reference value of the reference data set corresponding to the energy storage power source is higher, and therefore the weight of the reference data set when correcting the average power and correcting the power dispersion is higher during calculation.

[0050] It is understandable that the embodiment of the present invention uses the energy storage power supply of the current user to locate the energy storage power supplies of other nearby users, and uses the reference data sets corresponding to the energy storage power supplies of multiple other users to calculate the corrected average power and corrected power dispersion, thereby correcting the average fault power and power dispersion corresponding to the energy storage power supply of the current user, further accurately determining the power level at which the energy storage power supply is prone to failure and the degree of dispersion between multiple power data when a failure occurs, thereby enabling the subsequently calculated fault warning index to more accurately warn of battery unit failures.

[0051] It should be understood that the Method for obtaining target fault voltage and target voltage dispersion using a reference voltage group, based on Method for obtaining target fault current and target current dispersion using a reference current group and method based on The method of obtaining the target fault temperature and the target temperature dispersion using the reference temperature group is the same as that using The method for obtaining the reference power group is the same for each reference power group and will not be repeated here.

[0052] In detail, the method of calculating the fault warning index using the target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature, and target temperature dispersion includes: obtaining the ambient temperature using a pre-built external thermometer; and calculating the fault warning index based on the ambient temperature, target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature, and target temperature dispersion. The calculation formula is as follows: ,in, is the fault warning index, and are the target fault temperature and target temperature dispersion, respectively. is the ambient temperature, and are the target fault power and target power dispersion respectively, and are the target fault voltage and target voltage dispersion, respectively. and are the target fault current and target current dispersion, is the natural logarithm.

[0053] It should be noted that the external thermometer is a temperature sensor placed on the surface of the energy storage power supply. Ambient temperature refers to the temperature of the environment in which the energy storage power supply is located. The technology for obtaining the ambient temperature using a pre-built external thermometer is prior art and will not be further described here.

[0054] It should be understood that the main function of the fault warning index is to provide early warning of battery cell failures. When the subsequently calculated real-time discharge index reaches the fault warning index, the battery cell is likely to fail. For the specific application of the real-time discharge index, please refer to the subsequent embodiments.

[0055] S5. When the communication unit receives the warning data packet, it uses the storage unit to obtain the number of battery startups and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting unit.

[0056] In detail, the method of obtaining the number of battery starts and the average historical power using the storage unit includes: obtaining an operating data set in the storage unit, wherein the operating data set includes multiple discharge powers; using the multiple discharge powers to determine the maximum historical power and the average historical power, wherein the maximum historical power is the largest discharge power among the multiple discharge powers, and the average historical power is the average of the multiple discharge powers; obtaining the maximum full-charge voltage and the maximum discharge current of the battery unit, and calculating the maximum discharge power using the maximum full-charge voltage and the maximum discharge current, wherein the maximum discharge power is the product of the maximum full-charge voltage and the maximum discharge current; and calculating the number of battery starts based on the maximum historical power and the maximum discharge power, the calculation formula is as follows: ,in, The number of battery starts. is the maximum historical power, is the maximum discharge power, Represents a round-up operation.

[0057] It should be explained that the operating data set refers to a collection of multiple discharge powers recorded by the storage unit over a period of time. The operating data set is obtained by reading the data stored in the storage unit. Discharge power refers to the output power of the energy storage power supply when it is supplying power. The maximum full-charge voltage refers to the maximum voltage that the battery cell can produce when fully charged, and the maximum discharge current refers to the maximum current allowed to pass through the battery cell when supplying power. The maximum full-charge voltage and maximum discharge current are related to the model of the energy storage power supply. That is, the maximum full-charge voltage and maximum discharge current are determined at the time of production of the energy storage power supply and can be obtained by consulting the energy storage power supply manual or by consulting the energy storage power supply manufacturer.

[0058] It is understood that the number of battery startups refers to the number of battery cells required to subsequently use the energy storage power supply to provide external power. For example, if the number of battery startups is 3, then 3 battery cells in the energy storage battery set will be used to provide external power.

[0059] In detail, the The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting units, including: the number of batteries started, the corresponding number of energy storage battery sets Confirmed in the battery cells Preparation units, of which = ; right Each of the preparation units performs the following operations: performs a conduction operation on the charge and discharge switch corresponding to the preparation unit to obtain a discharge unit; uses the acquisition unit corresponding to the discharge unit to monitor the discharge power, discharge voltage, discharge current and discharge temperature of the discharge unit in real time; calculates a real-time discharge index based on the ambient temperature, discharge power, target power dispersion, discharge voltage, target voltage dispersion, discharge current, target current dispersion, discharge temperature and target temperature dispersion; compares the real-time discharge index with the fault warning index in the warning data packet and compares the discharge power with the preset power threshold; when the real-time discharge index is greater than the fault warning index or the discharge power is less than the power threshold, performs a closing operation on the charge and discharge switch corresponding to the discharge unit to obtain a waiting unit, and randomly identifies a battery cell in the energy storage battery set as a preparation unit, and returns to the step of performing a conduction operation on the charge and discharge switch corresponding to the preparation unit until the number of waiting units reaches - a; will The discharge unit is Waiting units, and sum up the waiting units to get Waiting unit.

[0060] For example, if the number of batteries started is 3, then the corresponding energy storage battery set Three battery cells are randomly selected from the battery cells as three preparation cells.

[0061] It should be understood that performing a conduction operation on the charge and discharge switch corresponding to the preparation unit means using the central control end to control the charge and discharge switch to enter the conduction state, and performing a close operation on the charge and discharge switch corresponding to the preparation unit means using the central control end to control the charge and discharge switch to enter the close state. Since the charge and discharge switch is a MOSFET (metal oxide semiconductor field effect transistor), when the gate of the MOSFET receives a voltage signal from the central control end, the MOSFET will form a low-impedance channel between the source and the drain and enter the conduction state, thereby connecting the current path between the battery cell and the external load, allowing the battery cell to supply power to the outside. When the central control end stops sending a voltage signal to the MOSFET, a high impedance is formed between the source and the drain, and the MOSFET will enter the close state, preventing current from flowing, thereby disconnecting the current path between the battery cell and the external load, and causing the battery cell to stop supplying power to the outside.

[0062] It should be explained that the preparation unit is a battery unit that is ready to supply power. The discharge unit refers to the preparation unit that is currently supplying power. The standby unit is a discharge unit that has stopped supplying power. The discharge power, discharge voltage, discharge current, and discharge temperature refer to the power data, voltage data, current data, and temperature data collected by the collection unit of the discharge unit when supplying power, respectively. The technology of using the collection unit corresponding to the discharge unit to monitor the discharge power, discharge voltage, discharge current, and discharge temperature of the discharge unit in real time is existing technology and will not be repeated here.

[0063] It is understandable that the real-time discharge index reflects the probability of the discharge unit failing when supplying power to the outside. The larger the real-time discharge index, the greater the probability of the discharge unit failing when supplying power to the outside. When the real-time discharge index is greater than the fault warning index, it means that the discharge unit is likely to fail, so the charge and discharge switch corresponding to the discharge unit is closed to stop the discharge unit from supplying power to the outside. The method for calculating the real-time discharge index based on ambient temperature, discharge capacity, target capacity dispersion, discharge voltage, target voltage dispersion, discharge current, target current dispersion, discharge temperature, and target temperature dispersion is the same as the method for calculating the fault warning index based on ambient temperature, target fault capacity, target capacity dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature, and target temperature dispersion, and will not be repeated here.

[0064] It is generally known that excessive discharge will damage the battery cell, so a power threshold is set to extend the service life of the battery cell. Optionally, the power threshold is set to 20%, that is, when the discharge power is less than 20%, the charge and discharge switch corresponding to the discharge unit will also be closed to stop the discharge unit from supplying power to the outside.

[0065] For example, after a series of calculations, the central control end determines the fault warning index, and integrates the fault warning index into a warning data packet and sends it to the communication unit. When the communication unit of the BMS battery system receives the warning data packet sent by the central control end and reads the fault warning index from it, it confirms that it can enter the power supply state, and then obtains the number of battery startups as 3 through the storage unit, that is, 3 battery units need to be used for power supply at the same time, so the central control end collects the power from the energy storage battery. Three battery cells are randomly selected from the battery cells as three preparation units, and the charge and discharge switches in the three preparation units are turned on at the same time to obtain three discharge units, so that the three discharge units supply power to the outside at the same time. When the discharge unit supplies power to the outside, the discharge capacity, discharge voltage, discharge current and discharge temperature of the discharge unit are monitored in real time by the corresponding acquisition unit of the discharge unit, and a real-time discharge index is calculated. When the real-time discharge index of a discharge unit is greater than the fault warning index or the discharge capacity is less than the capacity threshold, it means that the discharge unit will have a high probability of failure or damage if it continues to discharge. Therefore, the charge and discharge switch corresponding to the discharge unit is turned off to stop discharging. Then, a battery cell is randomly selected from the energy storage battery set and marked as a preparation unit. The step of turning on the charge and discharge switch corresponding to the preparation unit is returned to achieve the effect of replacing the waiting unit. It is equivalent to that three discharge units always supply power at the same time during the cycle. When one stops supplying power, another one is selected from the energy storage battery set to supply power, and the number of discharge units that always supply power is kept at three. And since there are only battery cells, when the number of waiting cells reaches -3, which is equivalent to the concentrated energy storage battery The battery cells have all been converted into -3 waiting units and 3 discharge units, it is no longer possible to select new battery units from the energy storage battery set, so the cycle ends, and the 3 discharge units that are still supplying power are marked as waiting units, waiting for subsequent Waiting unit to perform the next operation.

[0066] It is understandable that in the embodiment of the present invention, only The reason why all battery cells are used for power supply instead of all battery cells at once is that when all battery cells are used for power supply at the same time, The battery cells are connected in series, and the overall power supply may be affected by the failure of one battery cell. In addition, when all batteries are supplying power at the same time, the temperature will rise faster and failures are more likely to occur. Therefore, the embodiment of the present invention adopts a relay discharge method to reduce the failure rate of the energy storage power supply when supplying power.

[0067] S6. According to Collection units, The expected holding time is calculated based on the waiting units and the average historical power.

[0068] In detail, the basis Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power, including: Each of the waiting units performs the following operations: performing a conduction operation on the charge and discharge switch corresponding to the waiting unit to obtain a residual unit, performing a detection operation on the residual unit using the acquisition unit corresponding to the residual unit to obtain the remaining power and the remaining voltage; summing up the remaining power and the remaining voltage respectively to obtain Remaining power and Remaining voltage; using the pre-acquired maximum capacity, power threshold, Remaining power, The expected holding time is calculated based on the residual voltage and average historical power. The calculation formula is as follows: ,in, For the expected maintenance time, for The remaining power Remaining power, is the power threshold, For maximum capacity, is the average historical power, for The residual voltage A residual voltage.

[0069] For example, when all the discharge units are converted into waiting units, further discharge may fail, and the power of multiple waiting units is insufficient. Generally speaking, when the power of the waiting units is insufficient, the voltage and current provided during power supply will decrease, and may not be enough to provide the voltage or current required by the power end. If the user still needs power supply at this time, he can only The charging and discharging switches of the waiting units are turned on at the same time, using The waiting units supply power to the outside at the same time, and it is necessary to estimate the maximum time that the energy storage power supply can supply power to the outside, that is, the expected maintenance time, and then integrate it into a data packet and send it to the user to remind the user to pay attention to the time of using the energy storage power supply.

[0070] It should be understood that the output end of the existing energy storage power supply contains a DC-DC converter, which can adjust the output voltage in real time according to the voltage demand of the power end (transformer principle), so even if you use Even if the waiting units are powered at the same time, there will be no problem of overvoltage.

[0071] It is understandable that the method of performing a conduction operation on the charge and discharge switches corresponding to the waiting units to obtain the residual units is the same as the method of performing a conduction operation on the charge and discharge switches corresponding to the preparation units to obtain the discharge units, which will not be repeated here.

[0072] It should be noted that the remaining power and remaining voltage refer to the remaining power and voltage data, respectively, collected by the acquisition unit. Maximum capacity refers to the capacity of a fully charged battery cell. This information depends on the model of the battery cell in the energy storage battery and can be obtained by consulting the energy storage battery manual or by consulting the energy storage power supply manufacturer.

[0073] S7. Utilize the communication unit to integrate the expected maintenance time into a reminder data packet, and send the reminder data packet to the pre-built battery client to complete the power management of the energy storage battery.

[0074] Exemplarily, the battery client is an energy storage power supply APP located on the mobile phone of the user of the energy storage battery, wherein the energy storage power supply APP can be pre-programmed by Java. When receiving the reminder data packet, the energy storage power supply APP can parse the expected maintenance time contained in the reminder data packet, and convert the expected maintenance time into a text message, which is displayed on the display interface of the user's mobile phone. For example: if the expected maintenance time is 1 hour and 20 minutes, the text message appearing on the display interface is: (The energy storage battery can only continue to supply power for 1 hour and 20 minutes!).

[0075] It should be understood that the technology of using a communication unit to integrate the expected maintenance time into a reminder data packet and the technology of the energy storage power supply APP being able to parse the expected maintenance time contained in the reminder data packet when receiving the reminder data packet and convert the expected maintenance time into a piece of text information are both existing technologies and will not be repeated here.

[0076] The present invention is to solve the problem described in the background technology. The present invention receives a power management instruction and determines a power management environment based on the power management instruction. The power management environment includes: a storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes The battery unit has a one-to-one correspondence with the acquisition unit. The battery unit includes: a battery cell and a charge and discharge switch. It can be seen that the embodiment of the present invention provides a systematic working environment for each unit by building a complete power management environment, ensuring the systematic nature of data acquisition and processing, and then obtaining the fault data set in the storage unit. The fault data set is used to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes Fault data, and the fault data includes: battery power, battery voltage, battery current and battery temperature. It can be seen that the embodiment of the present invention uses the fault data set stored in the storage unit in the past period of time to provide a reference for the subsequent calculation of the fault warning index, thereby improving the accuracy of fault warning for the energy storage power supply and reducing the failure rate of the energy storage power supply. The positioning unit is used to obtain the coordinates of the energy storage power supply, and the communication unit is used to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and the initial data packet is sent to the pre-built power control center. It can be seen that the embodiment of the present invention obtains the coordinates of the energy storage power supply through the positioning unit, which is convenient for subsequent retrieval of the fault data of other nearby energy storage power supplies in the energy storage power supply map of the power control center according to the coordinates of the energy storage power supply, and uses the fault data of other nearby energy storage power supplies to provide a reference for the subsequent calculation of the fault warning index. The accuracy of fault warning for energy storage power supply is improved, and the failure rate of energy storage power supply is reduced. When the power control center receives the initial data packet, the power control center and the initial data packet are used to calculate the fault warning index, and the power control center is used to integrate the fault warning index into a warning data packet and send the warning data packet to the communication unit. It can be seen that the embodiment of the present invention uses the fault data set in the initial data packet to calculate the fault warning index, taking into account the influence of the user's usage habits on the energy storage power supply, and at the same time uses the power control center to obtain the fault data of other nearby energy storage power supplies as a reference, and also takes into account the influence of environmental factors on the energy storage power supply, so that the calculated fault warning index is more accurate, improving the accuracy of fault warning for energy storage power supply, and reducing the failure rate of energy storage power supply. After the communication unit receives the warning data packet, the storage unit is used to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain It can be seen that the embodiment of the present invention performs a relay discharge operation on the energy storage battery set, so that The battery units take over to supply power, which improves the stability of the energy storage power supply. Real-time monitoring of the acquisition unit The power supply of each battery unit is monitored, and the fault warning index in the warning data packet is referred to, so as to cut off the power supply in time before the battery unit fails, thereby reducing the failure rate of the energy storage power supply. Collection units, The expected maintenance time is calculated based on the waiting unit and the average historical power. The communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery. It can be seen that the embodiment of the present invention calculates the expected maintenance time to promptly remind the user of the length of time the energy storage battery can supply power, which facilitates the user to make timely adjustments based on power demand, thereby improving the stability of the energy storage power supply and reducing the failure rate of the energy storage power supply. Therefore, the present invention can improve the stability of the energy storage power supply and reduce the failure rate of the energy storage power supply.

[0077] like Figure 2 FIG. 1 is a functional module diagram of an energy storage power supply management system based on BMS technology provided by one embodiment of the present invention.

[0078] The energy storage power supply management system 100 based on BMS technology described in the present invention can be installed in an electronic device. Depending on the functionality implemented, the energy storage power supply management system 100 based on BMS technology can include a test management environment confirmation module 101, a fault data analysis module 102, an energy storage power supply discharge module 103, and a maintenance time estimation module 104. A module, also referred to as a unit, is a series of computer program segments that can be executed by an electronic device processor and perform a fixed function. These are stored in the electronic device's memory.

[0079] The management environment confirmation module 101 is used to receive the power management instruction and confirm the power management environment based on the power management instruction, wherein the power management environment includes: energy storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes The battery unit corresponds to the acquisition unit one by one, and the battery unit includes: a battery cell and a charge and discharge switch; the fault data analysis module 102 is used to obtain the fault data set in the storage unit, and use the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes The fault data includes battery power, battery voltage, battery current and battery temperature. The positioning unit is used to obtain the coordinates of the energy storage power supply. The communication unit is used to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and the initial data packet is sent to the pre-built power control center. The energy storage power supply discharge module 103 is used to calculate the fault warning index using the power control center and the initial data packet when the power control center receives the initial data packet, and integrate the fault warning index into a warning data packet using the power control center and send the warning data packet to the communication unit. After the communication unit receives the warning data packet, the storage unit is used to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain The maintenance time estimation module 104 is used according to Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power. The communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery.

[0080] In detail, the modules in the energy storage power supply management system 100 based on BMS technology in the embodiment of the present invention are used in the same manner as above. Figure 1 The energy storage power supply power management method based on BMS technology described in the previous section has the same technical means and can produce the same technical effects, so I will not go into details here.

[0081] like Figure 3 FIG. 1 is a schematic diagram of the structure of an electronic device for implementing a method for managing energy storage power supply based on BMS technology according to an embodiment of the present invention.

[0082] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a method program for managing energy storage power based on BMS technology.

[0083] The memory 11 includes at least one type of readable storage medium, including flash memory, a removable hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory), a magnetic memory, a magnetic disk, an optical disk, etc. In some embodiments, the memory 11 may be an internal storage unit of the electronic device 1, such as a removable hard disk of the electronic device 1. In other embodiments, the memory 11 may also be an external storage device of the electronic device 1, such as a plug-in removable hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. Furthermore, the memory 11 includes both the internal storage unit of the electronic device 1 and external storage devices. The memory 11 can be used not only to store application software installed in the electronic device 1 and various data, such as the code of a BMS-based energy storage power supply power management method program, but also to temporarily store data that has been output or is about to be output.

[0084] In some embodiments, the processor 10 may be comprised of an integrated circuit, such as a single packaged integrated circuit or a plurality of packaged integrated circuits with the same or different functions, including a combination of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 10 is the control core (control unit) of the electronic device, connecting the various components of the electronic device using various interfaces and circuits. It executes programs or modules stored in the memory 11 (e.g., a program for energy storage power management methods based on BMS technology) and accesses data stored in the memory 11 to perform various functions and process data.

[0085] The bus 12 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus 12 may be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to enable communication between the memory 11 and at least one processor 10, etc.

[0086] Figure 3 Only the electronic device with components is shown, and it can be understood by those skilled in the art that Figure 3The structure shown does not constitute a limitation on the electronic device 1 , and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0087] For example, although not shown, the electronic device 1 may further include a power supply (e.g., a battery) to power various components. Preferably, the power supply may be logically connected to the at least one processor 10 via a power management device, thereby enabling functions such as charge management, discharge management, and power consumption management via the power management device. The power supply may further include any components such as one or more DC or AC power supplies, a recharging device, a power failure detection circuit, a power converter or inverter, and a power status indicator. The electronic device 1 may also include various sensors, Bluetooth modules, Wi-Fi modules, etc., which are not further described here.

[0088] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0089] Optionally, the electronic device 1 may further include a user interface, which may be a display or an input unit (such as a keyboard). Optionally, the user interface may also be a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. The display may also be appropriately referred to as a display screen or a display unit, and is used to display information processed by the electronic device 1 and to display a visual user interface.

[0090] The energy storage power supply power management method program based on BMS technology stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve: receiving power management instructions, and confirming the power management environment based on the power management instructions, wherein the power management environment includes: energy storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes Battery units, and the battery units correspond to the acquisition units one by one. The battery units include: battery monomers and charge and discharge switches; obtain the fault data set in the storage unit, and use the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes Fault data, and the fault data includes: battery power, battery voltage, battery current and battery temperature; use the positioning unit to obtain the coordinates of the energy storage power supply, use the communication unit to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and send the initial data packet to the pre-built power control center; when the power control center receives the initial data packet, it uses the power control center and the initial data packet to calculate the fault warning index, uses the power control center to integrate the fault warning index into a warning data packet and sends the warning data packet to the communication unit; after the communication unit receives the warning data packet, it uses the storage unit to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting units; according to Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power; the communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery.

[0091] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0092] Furthermore, if the modules / units integrated into the electronic device 1 are implemented as software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. The computer-readable storage medium may be volatile or non-volatile. For example, the computer-readable medium may include any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard drive, a magnetic disk, an optical disk, a computer memory, or a read-only memory (ROM).

[0093] The present invention also provides a computer-readable storage medium, wherein the computer program is stored in the computer program. When the computer program is executed by the processor of the electronic device, the computer program can realize: receiving a power management instruction, and determining a power management environment based on the power management instruction, wherein the power management environment includes: an energy storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes Battery units, and the battery units correspond to the acquisition units one by one. The battery units include: battery monomers and charge and discharge switches; obtain the fault data set in the storage unit, and use the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes Fault data, and the fault data includes: battery power, battery voltage, battery current and battery temperature; use the positioning unit to obtain the coordinates of the energy storage power supply, use the communication unit to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and send the initial data packet to the pre-built power control center; when the power control center receives the initial data packet, it uses the power control center and the initial data packet to calculate the fault warning index, uses the power control center to integrate the fault warning index into a warning data packet and sends the warning data packet to the communication unit; after the communication unit receives the warning data packet, it uses the storage unit to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting units; according to Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power; the communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery.

[0094] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only exemplary, and actual implementations may have other division methods.

[0095] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed across multiple network elements. Some or all of the modules may be selected to achieve the purpose of the solution of this embodiment according to actual needs.

[0096] In addition, the functional modules in various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or hardware plus software functional modules.

[0097] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. 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 solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for managing energy storage power based on BMS technology, characterized in that: The method includes: receiving a power management instruction, and determining a power management environment based on the power management instruction, wherein the power management environment includes: an energy storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes Battery units, and the battery units correspond to the acquisition units one by one. The battery units include: battery monomers and charge and discharge switches; obtain the fault data set in the storage unit, and use the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes Fault data including battery power, battery voltage, battery current and battery temperature; using the positioning unit to obtain the coordinates of the energy storage power supply, using the communication unit to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and then send the initial data packet to the pre-built power control center; When the power control center receives the initial data packet, it uses the power control center and the initial data packet to calculate the fault warning index, and uses the power control center to integrate the fault warning index into a warning data packet and send the warning data packet to the communication unit; after the communication unit receives the warning data packet, it uses the storage unit to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting units; according to Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power; the communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery.

2. The energy storage power supply power management method based on BMS technology according to claim 1, characterized in that: The method of using the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group includes: using the fault data set The average fault power is calculated based on the battery power, where the average fault power is The average battery charge; The battery capacity dispersion is calculated based on the battery capacity. The calculation formula is as follows: ,in, is the electrical dispersion, for Battery charge Battery charge, is the average fault power; the average fault power and power dispersion are combined into a fault power group; and the fault voltage group, fault current group and fault temperature group are obtained based on the fault data set.

3. The energy storage power supply power management method based on BMS technology according to claim 2, characterized in that: The method of calculating the fault warning index using the power control center and the initial data packet includes: obtaining a central database and an energy storage power map of the power control center, confirming a central power point in the energy storage power map based on the energy storage power coordinates in the initial data packet; constructing a reference data circle in the energy storage power map with the central power point as the center, wherein a reference radius of the reference data circle is preset, and the energy storage power map includes multiple reference power points; obtaining a fault warning index using the energy storage power map, the multiple reference power points, the central power point, and the reference data circle. target power points and Target distance, where the target power point and the target distance correspond one to one, the target power point is the reference power point located in the reference data circle on the energy storage power map, and the target distance is the distance between the target power point and the center power point on the energy storage power map; according to The target power points are retrieved from the central database reference datasets, Each reference data set in the reference data set performs the following operations: obtain a reference power group, a reference voltage group, a reference current group, and a reference temperature group based on the reference data set; summarize the reference power group, the reference voltage group, the reference current group, and the reference temperature group respectively to obtain Reference power groups, Reference voltage groups, Reference current groups and reference temperature groups; using Reference power groups and The corrected average power and the corrected power dispersion are calculated based on the target distance, wherein the reference power group includes: reference fault power and reference power dispersion; the target fault power is calculated using the corrected average power and the average fault power in the initial data packet, wherein the target fault power is the average of the corrected average power and the average fault power; the target power dispersion is calculated using the corrected power dispersion and the power dispersion in the initial data packet, wherein the target power dispersion is the average of the corrected power dispersion and the power dispersion; based on The reference voltage group obtains the target fault voltage and target voltage dispersion, based on The target fault current and target current dispersion are obtained by using a reference current group. The target fault temperature and target temperature dispersion are obtained from the reference temperature groups; the fault warning index is calculated using the target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature and target temperature dispersion.

4. The energy storage power supply power management method based on BMS technology according to claim 3 is characterized in that: The calculation formula for the corrected average power is as follows: ,in, To correct the average power, and They are The first The reference power dispersion and reference fault power of each reference power group, for The first The target distance corresponding to the reference power group, is the reference radius, is a natural constant.

5. The energy storage power supply power management method based on BMS technology according to claim 4, characterized in that: The calculation formula for the corrected electrical quantity dispersion is as follows: ,in, To correct the electrical quantity dispersion.

6. The energy storage power supply power management method based on BMS technology according to claim 5, characterized in that: The method of calculating the fault warning index using the target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature, and target temperature dispersion includes: obtaining the ambient temperature using a pre-built external thermometer; and calculating the fault warning index based on the ambient temperature, target fault power, target power dispersion, target fault voltage, target voltage dispersion, target fault current, target current dispersion, target fault temperature, and target temperature dispersion. The calculation formula is as follows: ,in, is the fault warning index, and are the target fault temperature and target temperature dispersion, respectively. is the ambient temperature, and are the target fault power and target power dispersion respectively, and are the target fault voltage and target voltage dispersion, respectively. and are the target fault current and target current dispersion, is the natural logarithm.

7. The energy storage power supply power management method based on BMS technology according to claim 6, characterized in that: The method of obtaining the number of battery starts and the average historical power using the storage unit includes: obtaining an operating data set in the storage unit, wherein the operating data set includes multiple discharge powers; determining the maximum historical power and the average historical power using the multiple discharge powers, wherein the maximum historical power is the largest discharge power among the multiple discharge powers, and the average historical power is the average of the multiple discharge powers; obtaining the maximum full-charge voltage and the maximum discharge current of the battery unit, and calculating the maximum discharge power using the maximum full-charge voltage and the maximum discharge current, wherein the maximum discharge power is the product of the maximum full-charge voltage and the maximum discharge current; and calculating the number of battery starts based on the maximum historical power and the maximum discharge power, wherein the calculation formula is as follows: ,in, The number of battery starts. is the maximum historical power, is the maximum discharge power, Represents a round-up operation.

8. The energy storage power supply power management method based on BMS technology according to claim 7, characterized in that: The based The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting units, including: the number of batteries started, the corresponding number of energy storage battery sets Confirmed in the battery cells Preparation units, of which = ;right Each of the preparation units performs the following operations: performs a conduction operation on the charge and discharge switch corresponding to the preparation unit to obtain a discharge unit; uses the acquisition unit corresponding to the discharge unit to monitor the discharge power, discharge voltage, discharge current and discharge temperature of the discharge unit in real time; calculates a real-time discharge index based on the ambient temperature, discharge power, target power dispersion, discharge voltage, target voltage dispersion, discharge current, target current dispersion, discharge temperature and target temperature dispersion; compares the real-time discharge index with the fault warning index in the warning data packet and compares the discharge power with the preset power threshold; when the real-time discharge index is greater than the fault warning index or the discharge power is less than the power threshold, performs a closing operation on the charge and discharge switch corresponding to the discharge unit to obtain a waiting unit, and randomly identifies a battery cell in the energy storage battery set as a preparation unit, and returns to the step of performing a conduction operation on the charge and discharge switch corresponding to the preparation unit until the number of waiting units reaches - a; will The discharge unit is Waiting units, and sum up the waiting units to get Waiting unit.

9. The energy storage power supply power management method based on BMS technology according to claim 8, characterized in that: The basis Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power, including: Each of the waiting units performs the following operations: performing a conduction operation on the charge and discharge switch corresponding to the waiting unit to obtain a residual unit, performing a detection operation on the residual unit using the acquisition unit corresponding to the residual unit to obtain the remaining power and the remaining voltage; summing up the remaining power and the remaining voltage respectively to obtain Remaining power and Remaining voltage; using the pre-acquired maximum capacity, power threshold, Remaining power, The expected holding time is calculated based on the residual voltage and average historical power. The calculation formula is as follows: ,in, For the expected maintenance time, for The remaining power Remaining power, is the power threshold, For maximum capacity, is the average historical power, for The residual voltage A residual voltage.

10. A power management system for energy storage power supply based on BMS technology, characterized in that: The system includes: a management environment confirmation module for receiving a power management instruction and confirming a power management environment based on the power management instruction, wherein the power management environment includes: an energy storage battery set, A collection unit, a storage unit, a positioning unit and a communication unit, wherein the energy storage battery set includes The battery unit corresponds to the acquisition unit one by one. The battery unit includes: a battery cell and a charge and discharge switch; a fault data analysis module is used to obtain the fault data set in the storage unit, and use the fault data set to obtain the fault power group, fault voltage group, fault current group and fault temperature group, wherein the fault data set includes Fault data, and the fault data includes: battery power, battery voltage, battery current and battery temperature. The positioning unit is used to obtain the coordinates of the energy storage power supply, and the communication unit is used to integrate the coordinates of the energy storage power supply, the fault power group, the fault voltage group, the fault current group and the fault temperature group into an initial data packet, and the initial data packet is sent to the pre-built power control center; the energy storage power supply discharge module is used to calculate the fault warning index using the power control center and the initial data packet when the power control center receives the initial data packet, and integrate the fault warning index into a warning data packet using the power control center and send the warning data packet to the communication unit; after the communication unit receives the warning data packet, the storage unit is used to obtain the number of battery starts and the average historical power, and based on The acquisition unit, warning data packet and battery startup number perform the discharge operation on the energy storage battery set to obtain Waiting unit; maintenance time estimation module, used to Collection units, The expected maintenance time is calculated based on the waiting units and the average historical power. The communication unit is used to integrate the expected maintenance time into a reminder data packet, and the reminder data packet is sent to the pre-built battery client to complete the power management of the energy storage battery.

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