CN105990857A - Phosphoric acid iron lithium battery management system and system on chip (SOC) calibration method - Google Patents
Phosphoric acid iron lithium battery management system and system on chip (SOC) calibration method Download PDFInfo
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- CN105990857A CN105990857A CN201510045384.3A CN201510045384A CN105990857A CN 105990857 A CN105990857 A CN 105990857A CN 201510045384 A CN201510045384 A CN 201510045384A CN 105990857 A CN105990857 A CN 105990857A
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Abstract
The present invention provides a phosphoric acid iron lithium battery management system and an SOC calibration method. The management system comprises a three-layer network structure of a monomer battery management unit, a battery pack management unit and a battery system management unit. The monomer battery management unit manages a phosphoric acid iron lithium battery, the battery pack management unit manages the monomer battery management unit, the battery system management unit manages the battery pack management unit, and a monitoring system is connected with the battery system management unit, monitors the whole system and is connected with a monitoring scheduling system and an energy storage current transformer. The SOC calibration method cooperates the monitoring system and the energy storage current transformer to automatically calibrate the capacity of a battery system and an SOC. Compared with the prior art, the phosphoric acid iron lithium battery management system and the SOC calibration method provided by the present invention enable the safety and the reliability of the phosphoric acid iron lithium battery to be improved, the service life of the phosphoric acid iron lithium battery to be prolonged effectively and the calibration precision of the SOC to be improved greatly, and guarantee the usage safety of the phosphoric acid iron lithium battery in a large-scale energy storage power station.
Description
Technical field
The present invention relates to technical field of energy storage, be specifically related to management system and the SOC demarcation side of a kind of ferric phosphate lithium cell
Method.
Background technology
Along with distributed energy and the continuous expansion of new forms of energy development scale, the intelligence being realized electric power by intelligent grid is deposited
Storage and transmission, be the optimization trend of energy system.Energy-storage system is Large Copacity, the long-life, fast to the requirement of battery performance
Speed response, chargeable by trickle charge, and ferric phosphate lithium cell is owing to having higher energy density ratio and power density ratio, well
Efficiency for charge-discharge and flexibly burst mode can meet the requirement of at present extensive energy storage, have become as the weight of energy storage research
Point.But ferric phosphate lithium cell itself has the most non-linear, discordance and time-varying characteristics so that it is in long-term discharge and recharge
During due to the impact of charge acceptance, self-discharge rate and capacity attenuation speed etc. between each cell, easily cause
Discreteness between stack battery strengthens, and performance degradation aggravates, and serious situation even can threaten safe serious consequence.
If effectively do not managed ferric phosphate lithium cell, the performance of set of cells will decay rapidly, ultimately results in extensive
Battery life there is no guarantee that.
At present, due to ferric phosphate lithium cell enormous amount and the characteristic of connection in series-parallel form complexity, there is no and can effectively manage together
Time ferric phosphate lithium cell the management system safely and controllably run, the existing SOC scaling method for battery is typically adopted
Use ampere-hour integration method, but the precision of traditional SOC scaling method is not enough so that cannot when battery being carried out SOC estimation
Obtain exact numerical, have impact on the judgement of the safety to ferric phosphate lithium cell.
And along with distributed energy and the continuous expansion of new forms of energy development scale, ferric phosphate lithium cell answering in energy-storage system
With day by day extensive, therefore, how to design one and disclosure satisfy that ferric phosphate lithium cell safely and controllably runs and has it
The system of effect management, is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the present invention provides management system and the SOC scaling method of a kind of ferric phosphate lithium cell, this management system
Uniting progressive, method is simple, convenient, improves ferric phosphate lithium cell safety and reliability, effectively extends it and make
With the life-span, it is ensured that the safe and reliable operation of battery；This SOC scaling method automatically carry out battery system capacity demarcate and
SOC demarcates and greatly improves the stated accuracy of its SOC；This management system and SOC scaling method ensure that iron phosphate
Lithium battery is at the accuracy using safety and research of extensive energy-accumulating power station.
The management system of a kind of ferric phosphate lithium cell, described management system includes cell administrative unit, battery set management
Unit, battery system administrative unit and monitoring unit；
Described cell administrative unit management monomer ferric phosphate lithium cell；
Described cell administrative unit, battery set management unit and battery system administrative unit are Three Tiered Network Architecture, institute
Stating cell administrative unit described in battery set management Single Component Management, described battery system administrative unit manages described set of cells
Administrative unit, described monitoring system is connected with described battery system administrative unit and monitors whole described management system；
Described monitoring system connects monitoring and dispatching system and energy accumulation current converter.
Preferably, each described monomer ferric phosphate lithium cell is both placed in 1 battery case, each described cell pipe
Reason unit all manages 1 described battery case；
Described cell administrative unit include CAN communication interface, fan control module, DC source, cooling blower,
Numeral xegregating unit, governor circuit and peripheral circuit；It is provided with list between described cell administrative unit and described battery case
Body battery voltage detection and balance module and cell temperature detecting module.
Preferably, described cell administrative unit detects the voltage of described monomer ferric phosphate lithium cell and temperature and to described
The voltage of monomer ferric phosphate lithium cell and the abnormality of temperature are reported to the police；
Described cell administrative unit voltage, temperature and the warning message of described monomer ferric phosphate lithium cell are all sent to
Described battery set management unit, and according to described battery set management unit return order to described monomer ferric phosphate lithium cell
It is adjusted.
Preferably, when described monomer ferric phosphate lithium cell voltage each other is inconsistent, described governor circuit and periphery electricity
The voltage of described monomer ferric phosphate lithium cell is equalized by the equalizing circuit in road, and switches to described list by relay
Body ferric phosphate lithium cell carries out mending electricity.
Preferably, each described battery set management unit all manages cell administrative unit described in a group；Described set of cells
Administrative unit is in parallel each other and carries out electric current and collects, and forms energy-storage system；
Described battery set management unit obtains the SOC of described monomer ferric phosphate lithium cell from described cell administrative unit
State goes forward side by side rower calmly；
The described monomer ferric phosphate lithium cell that described battery set management unit feeds back according to described cell administrative unit
State, sends equilibrium or decretum inhibitorium to described cell administrative unit；
Monomer ferric phosphate lithium cell described in described battery set management unit Intelligent adjustment and the temperature of described system and store and
Statistical correlation data, described battery set management unit and described cell administrative unit and described battery system administrative unit
Real-time communication.
Preferably, described battery system administrative unit manages multiple described battery set management unit simultaneously；
Described battery system administrative unit, real-time communication between described battery set management unit and described monitoring system；Described
Battery system administrative unit carries out charge and discharge control, total voltage collection and High-Voltage Insulation monitoring to whole described management system；
The auxiliary equipment of described battery system administrative unit management peripheral circuit.
Preferably, the auxiliary equipment of described peripheral circuit includes total current sampling module, current sample module and voltage detecting
Module；The auxiliary equipment of described monitoring unit and described peripheral circuit is in real time to described energy accumulation current converter and described monitoring and scheduling
The achievement data of the voltage and current of system is managed described in system transfers；
Described total current sampling module gathers the total current of described system by described battery system administrative unit；
Described current sample module and voltage detection module collection also detect electric current and the voltage of described batteries management system；
Each described batteries management system is each equipped with described current sample module and described voltage detection module.
A kind of SOC scaling method being applicable to ferric phosphate lithium cell, described ferric phosphate lithium cell is furnished with the pipe controlling to manage it
Reason system, is provided with the energy accumulation current converter and monitoring system being connected with described ferric phosphate lithium cell in described management system；Described
The step of SOC scaling method is as follows:
(1) described energy accumulation current converter enters holding state；
(2) described management system and described monitoring system are started；
(3) described monitoring system detects whether described battery system administrative unit receives the report for police service signal, if nothing, then state
Involution also detects again；If having, then enter step (4)；
(4) described management system completes the lower limit capacity of described ferric phosphate lithium cell and SOC is the demarcation of 0%；
(5) described management system completes the upper limit capacity of described ferric phosphate lithium cell and SOC is the demarcation of 100%；
(6) repeating step (4) once, described management system completes capacity verification and the SOC of described ferric phosphate lithium cell
Demarcating, full charge and discharge process terminates, and adds up the efficiency for charge-discharge of described management system.
Preferably, in described scaling method the detailed process of step (4) be:
Issue described management system entirely to discharge and the order of the grid-connected electric discharge of described energy accumulation current converter；
Described management system is discharged after taking orders entirely；
Described energy accumulation current converter is grid-connected electric discharge after taking orders, until described ferric phosphate lithium cell has discharged, and the most described phosphorus
Acid lithium iron battery emptying, described energy accumulation current converter reenters holding state；
Described management system completes the lower limit capacity of described ferric phosphate lithium cell and SOC is the demarcation of 0%.
Preferably, in described SOC scaling method, the detailed process of step (5) is:
Issue described management system entirely to charge and the order of the grid-connected charging of described energy accumulation current converter；
Described management system is charged after taking orders entirely；
Described energy accumulation current converter is grid-connected charging after taking orders, until described ferric phosphate lithium cell charging complete, the most described phosphorus
Acid lithium iron battery is full of, and described energy accumulation current converter reenters holding state；
Described management system completes the upper limit capacity of described ferric phosphate lithium cell and SOC is the demarcation of 100%.
From above-mentioned technical scheme it can be seen that the invention provides management system and the SOC of a kind of ferric phosphate lithium cell
Scaling method, cell administrative unit, battery set management unit and battery system management including Three Tiered Network Architecture are single
Unit；Cell administrative unit management ferric phosphate lithium cell；Battery set management Single Component Management cell administrative unit, electricity
Cell system administrative unit management battery set management unit, monitoring system is connected with battery system administrative unit and monitors whole system
System；Monitoring system connects monitoring and dispatching system and energy accumulation current converter；SOC scaling method is for coordinating monitoring system and storage
Energy current transformer automatically carries out the capacity of battery system and demarcates and SOC demarcation.Improve ferric phosphate lithium cell safety and can
By property, effectively extend its service life, greatly improve the stated accuracy of its SOC, improve its energy storage service efficiency,
Ensure that the ferric phosphate lithium cell use safety at extensive energy-accumulating power station.
With immediate prior art ratio, the technical scheme that the present invention provides has a following excellent effect:
1, the technical scheme that the present invention provides, the cell administrative unit of Three Tiered Network Architecture, battery set management unit
With the setting of battery system administrative unit, effectively solve ferric phosphate lithium cell enormous amount and connection in series-parallel form complicated
Problem, simplifies the structure of battery management system, improves its reliability and controls sensitivity, being conducive to phosphoric acid
Lithium iron battery is used safely and is safeguarded, extends the service life of ferric phosphate lithium cell, improves its energy storage service efficiency.
2, the technical scheme that the present invention provides, SOC scaling method is carried out automatically for coordinating monitoring system and energy accumulation current converter
The capacity of battery system is demarcated and SOC demarcates.Greatly improve the stated accuracy of its SOC to LiFePO4 electricity
The SOC in pond studies more precise and high efficiency, and then ensure that ferric phosphate lithium cell safety in extensive energy-accumulating power station
And reliability.
3, the technical scheme that the present invention provides, battery is equalized by the equalizing circuit in governor circuit and peripheral circuit,
Switched by relay that to carry out mending electricity for every batteries consistent, by active equalization plan with the voltage keeping whole set of cells
Slightly battery is carried out balance protection, improve output energy and the service life of set of cells, improve the safety of battery management
Property and reliability, it is achieved that with energy-storage system monitoring system and the real-time information interaction of converter equipment, it is ensured that iron phosphate
Lithium battery is in the use safety of extensive energy-accumulating power station.
4, the technical scheme that the present invention provides, by management system and SOC scaling method with the use of, it is achieved that single
Body battery voltage detection；Cell temperature detection；Battery set charge/discharge electric current detects with total voltage；Battery failure is examined
Disconnected and overcharge, Cross prevention and temperature protection；The high accuracy of set of cells SOC is estimated；Efficiently, fast uniform；High
Pressure precharge；System insulation detects；System is run and fault data recorder and current transformer and the function of monitoring system communication,
Be able to carry out ferric phosphate lithium cell managing comprehensively and accurately and detecting, thus improve battery management safety and can
By property.
5, the technical scheme that the present invention provides, the use of the auxiliary equipment of peripheral circuit, meet high-precision voltage, electricity
Stream, temperature sampling requirement so that management system and the SOC scaling method of this ferric phosphate lithium cell are the most accurate, simultaneously
Improve the energy storage service efficiency of ferric phosphate lithium cell.
6, the technical scheme that the present invention provides, is widely used, has significant Social benefit and economic benefit.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In technology description, the required accompanying drawing used is introduced briefly, it should be apparent that, the accompanying drawing in describing below is only originally
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawing can be obtained according to these accompanying drawings.
Fig. 1 is the general construction schematic diagram of the management system of the ferric phosphate lithium cell of the present invention；
Fig. 2 is the structural representation of the cell administrative unit of the present invention；
Fig. 3 is the equalizing circuit schematic diagram of the management system of the ferric phosphate lithium cell of the present invention；
Fig. 4 is the operational flowchart of the SOC scaling method of the ferric phosphate lithium cell of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Base
In embodiments of the invention, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into the scope of protection of the invention.
As it is shown in figure 1, the management system of a kind of ferric phosphate lithium cell of the present invention, including cell administrative unit, electricity
Pond group administrative unit, battery system administrative unit and monitoring unit；
Cell administrative unit management monomer ferric phosphate lithium cell；
Cell administrative unit, battery set management unit and battery system administrative unit are Three Tiered Network Architecture, set of cells
Administrative unit management cell administrative unit, battery system administrative unit management battery set management unit, monitoring system with
Battery system administrative unit connects and monitors whole management system；
Monitoring system connects monitoring and dispatching system and energy accumulation current converter.
Wherein, wherein cell administrative unit 2 is the critical component in battery management system, is mainly used to detect battery
The voltage of cell and temperature in module, each monomer ferric phosphate lithium cell is both placed in 1 battery case, Mei Gedan
Body battery management unit all manages 1 battery case；N cell administrative unit is one group；One has m group monomer
Battery management unit；Each battery set management unit all manages one group of cell administrative unit；M battery set management list
Unit's connection in series-parallel is also confluxed, and forms battery energy storage system, and battery system administrative unit manages m battery set management simultaneously
Unit.
Battery set management unit, as the battery management system of single electricity cabinet, manages the operation of whole electricity cabinet as a whole；Each electricity
Pond group administrative unit detects the charging and discharging currents of one group of cell administrative unit, cell administrative unit total voltage and absolutely
Edge resistance；The precharge of cell administrative unit, discharge and recharge, power-on and power-off are managed, diagnosis input power supply,
The state of the auxiliary equipments such as relay status；The SOC state of monomer ferric phosphate lithium cell is obtained from cell administrative unit
Rower of going forward side by side is fixed；
The state of the monomer ferric phosphate lithium cell that battery set management unit feeds back according to cell administrative unit, to monomer electricity
Pond administrative unit sends equilibrium or decretum inhibitorium；
Battery set management unit Intelligent adjustment monomer ferric phosphate lithium cell and the temperature of system also store and statistical correlation data,
Battery set management unit and cell administrative unit and battery system administrative unit real-time communication.
Battery system administrative unit, real-time communication between battery set management unit and monitoring system；Battery system administrative unit
Whole management system is carried out charge and discharge control, total voltage collection and High-Voltage Insulation monitoring；Battery system administrative unit manages
The auxiliary equipment of peripheral circuit, and battery energy storage system application strategy under different occasions is provided.
Wherein, the auxiliary equipment of peripheral circuit includes total current sampling module, current sample module and voltage detection module；
The auxiliary equipment of monitoring unit and peripheral circuit is in real time to energy accumulation current converter and the electricity of monitoring and dispatching system transmission and management system
Pressure and the achievement data of electric current.
The total current sampling module total current by battery system administrative unit acquisition system；
Current sample module and voltage detection module collection also detect electric current and the voltage of batteries management system, each battery
Group management system is each equipped with 1 current sample module and 1 voltage detection module.
As in figure 2 it is shown, cell administrative unit includes CAN communication interface, fan control module, DC source, cold
But blower fan, numeral xegregating unit, governor circuit and peripheral circuit；It is provided with list between cell administrative unit and battery case
Body battery voltage detection and balance module and cell temperature detecting module.
Wherein, the cell administrative unit detection voltage of monomer ferric phosphate lithium cell and temperature to monomer LiFePO4 electricity
The voltage in pond and the abnormality of temperature are reported to the police；
Voltage, temperature and the warning message of monomer ferric phosphate lithium cell are all sent to set of cells pipe by cell administrative unit
Reason unit, and according to the order of battery set management unit return, monomer ferric phosphate lithium cell is adjusted；
DC source manages system power supply to cell, and cell administrative unit passes through CAN communication interface and set of cells
Administrative unit communicates.Switched by relay and carry out mending electricity for every batteries；
Equalizing circuit pair when monomer ferric phosphate lithium cell voltage each other is inconsistent, in governor circuit and peripheral circuit
The voltage of monomer ferric phosphate lithium cell equalizes, and euqalizing current is maximum up to 2A, and switches to monomer by relay
It is consistent with the voltage keeping whole set of cells that ferric phosphate lithium cell carries out mending electricity, improves the output energy of set of cells and uses the longevity
Life.Cell administrative unit is also by being monitored battery temperature in module analyzing, and controls cooling blower to electricity
Pond carries out temperature protection.
As it is shown on figure 3, the present invention uses the equalizing circuit of active charge balancing strategy, maximum euqalizing current up to 2A,
Dynamically adjusting the charging and discharging currents of monocell in charge and discharge process, balanced energy transmission efficiency is up to 85%, and heat dissipation is little,
Can realize the efficient equilibrium between battery, in charge and discharge process, top battery 1 needs to transfer the energy to low level battery
2, signal 1 triggers the transfer of this energy, and energy flow to inductance by module 1 subsequently.When signal 1 resets, module 1
Closing, inductance energy level is in top level.Because inductive current must constantly flow, therefore body two pole of module 2
Pipe is forward biased, thus completes to shift to the electric charge of V2 position cells.In like manner, need energy when bottom battery 2
When being transferred to battery 1, shifting signal 2 trigger energy, energy is flow to inductance by module 2, then is flowed to battery by inductance
1.Owing to the resistance of whole series loop is relatively low, the energy being stored in this inductance only has slight loss.
As shown in Figure 4, the present invention a kind of be applicable to ferric phosphate lithium cell SOC (State of Charge, charged
State) scaling method, management system is provided with the energy accumulation current converter being connected with ferric phosphate lithium cell and monitoring system；This
Bright a kind of SOC scaling method being applicable to ferric phosphate lithium cell summarizes the pluses and minuses of existing SOC estimation method, root
According to the feature of energy storage, under the support of a large amount of energy storage experimental datas, rely on high-precision analogue collection module, reference
Real-time open-circuit voltage and historic load voltage curve, and by multidimensional correction ampere-hour integration method, coordinate monitoring and dispatching system
Automatically carry out battery energy storage system capacity to demarcate and SOC demarcation with energy accumulation current converter, make SOC obtain estimation precision and obtained greatly
Width promotes, and ferric phosphate lithium cell is furnished with the management system controlling to manage it, and the step of SOC scaling method is as follows:
(1) energy accumulation current converter enters holding state；
(2) management system and monitoring system are started；
(3) monitoring system detects whether described battery system administrative unit receives the report for police service signal, if nothing, then state involution
And again detect；If having, then enter step (4)；
(4) management system completes the lower limit capacity of ferric phosphate lithium cell and SOC is the demarcation of 0%；
(5) management system completes the upper limit capacity of ferric phosphate lithium cell and SOC is the demarcation of 100%；
(6) repeating step (4) once, management system completes capacity verification and the SOC demarcation of ferric phosphate lithium cell, entirely
Charge and discharge process terminates, the efficiency for charge-discharge of statistic management system.
Wherein, the detailed process of the step (4) of SOC scaling method is:
Issue management system entirely to discharge and the order of the grid-connected electric discharge of energy accumulation current converter；
Management system is discharged after taking orders entirely；
Energy accumulation current converter is grid-connected electric discharge after taking orders, until ferric phosphate lithium cell has discharged, i.e. ferric phosphate lithium cell is put
Sky, energy accumulation current converter reenters holding state；
Management system completes the lower limit capacity of ferric phosphate lithium cell and SOC is the demarcation of 0%.
Wherein, the detailed process of the step (5) of SOC scaling method is:
Issue management system entirely to charge and the order of the grid-connected charging of energy accumulation current converter；
Management system is charged after taking orders entirely；
Energy accumulation current converter is grid-connected charging after taking orders, until ferric phosphate lithium cell charging complete, i.e. ferric phosphate lithium cell are filled
Full, energy accumulation current converter reenters holding state；
Management system completes the upper limit capacity of ferric phosphate lithium cell and SOC is the demarcation of 100%.
Wherein, the detailed process of step (1) energy accumulation current converter entrance holding state is: demarcates according to full charge and discharge SOC and refers to
Order checks whether energy accumulation current converter is holding state, the most directly carries out step (2)；If it is not, then use energy storage to become
Stream device Schema control energy accumulation current converter is holding state；
When step (2) starts management system and monitoring system, after starting monitoring system, check that whether management system is for having
Effect starts, and the most directly carries out step (3)；If it is not, then issue management system action command to start management system.
Above example is only in order to illustrate that technical scheme is not intended to limit, although with reference to above-described embodiment to this
Invention has been described in detail, and the detailed description of the invention of the present invention still can be entered by those of ordinary skill in the field
Row amendment or equivalent, and these are without departing from any amendment of spirit and scope of the invention or equivalent, it is equal
Within the claims of the present invention that application is awaited the reply.
Claims (10)
1. the management system of a ferric phosphate lithium cell, it is characterised in that described management system includes that cell manages
Unit, battery set management unit, battery system administrative unit and monitoring unit；
Described cell administrative unit management monomer ferric phosphate lithium cell；
Described cell administrative unit, battery set management unit and battery system administrative unit are Three Tiered Network Architecture, institute
Stating cell administrative unit described in battery set management Single Component Management, described battery system administrative unit manages described set of cells
Administrative unit, described monitoring system is connected with described battery system administrative unit and monitors whole described management system；
Described monitoring system connects monitoring and dispatching system and energy accumulation current converter.
Manage system the most as claimed in claim 1, it is characterised in that each described monomer ferric phosphate lithium cell is all put
Putting in 1 battery case, each described cell administrative unit all manages 1 described battery case；
Described cell administrative unit include CAN communication interface, fan control module, DC source, cooling blower,
Numeral xegregating unit, governor circuit and peripheral circuit；It is provided with list between described cell administrative unit and described battery case
Body battery voltage detection and balance module and cell temperature detecting module.
Manage system the most as claimed in claim 1 or 2, it is characterised in that described cell administrative unit detects
The voltage of described monomer ferric phosphate lithium cell and temperature to the voltage of described monomer ferric phosphate lithium cell and the exception of temperature
State is reported to the police；
Described cell administrative unit voltage, temperature and the warning message of described monomer ferric phosphate lithium cell are all sent to
Described battery set management unit, and according to described battery set management unit return order to described monomer ferric phosphate lithium cell
It is adjusted.
Manage system the most as claimed in claim 2, it is characterised in that described monomer ferric phosphate lithium cell is each other
Voltage inconsistent time, the electricity to described monomer ferric phosphate lithium cell of the equalizing circuit in described governor circuit and peripheral circuit
Pressure equalizes, and switches to described monomer ferric phosphate lithium cell to carry out mending electricity by relay.
Manage system the most as claimed in claim 1, it is characterised in that each described battery set management unit all manages one
Organize described cell administrative unit；Described battery set management unit is in parallel each other and carries out electric current and collects, and forms storage
Can system；
Described battery set management unit obtains the SOO of described monomer ferric phosphate lithium cell from described cell administrative unit
State goes forward side by side rower calmly；
The described monomer ferric phosphate lithium cell that described battery set management unit feeds back according to described cell administrative unit
State, sends equilibrium or decretum inhibitorium to described cell administrative unit；
Monomer ferric phosphate lithium cell described in described battery set management unit Intelligent adjustment and the temperature of described system and store and
Statistical correlation data, described battery set management unit and described cell administrative unit and described battery system administrative unit
Real-time communication.
Manage system the most as claimed in claim 1, it is characterised in that described battery system administrative unit manages simultaneously
Multiple described battery set management unit；
Described battery system administrative unit, real-time communication between described battery set management unit and described monitoring system；Described
Battery system administrative unit carries out charge and discharge control, total voltage collection and High-Voltage Insulation monitoring to whole described management system；
The auxiliary equipment of described battery system administrative unit management peripheral circuit.
Manage system the most as claimed in claim 6, it is characterised in that the auxiliary equipment of described peripheral circuit includes always
Current sample module, current sample module and voltage detection module；The auxiliary of described monitoring unit and described peripheral circuit sets
The index of the standby voltage and current transmitting described management system in real time to described energy accumulation current converter and described monitoring and dispatching system
Data；
Described total current sampling module gathers the total current of described system by described battery system administrative unit；
Described current sample module and voltage detection module collection also detect electric current and the voltage of described batteries management system；
Each described batteries management system is each equipped with described current sample module and described voltage detection module.
8. the SOC scaling method being applicable to ferric phosphate lithium cell, it is characterised in that described ferric phosphate lithium cell is joined
There is the management system controlling to manage it, described management system is provided with the energy accumulation current converter being connected with described ferric phosphate lithium cell
And monitoring system；The step of described SOC scaling method is as follows:
(1) described energy accumulation current converter enters holding state；
(2) described management system and described monitoring system are started；
(3) described monitoring system detects whether described battery system administrative unit receives the report for police service signal, if nothing, then state
Involution also detects again；If having, then enter step (4)；
(4) described management system completes the lower limit capacity of described ferric phosphate lithium cell and SOC is the demarcation of 0%；
(5) described management system completes the upper limit capacity of described ferric phosphate lithium cell and SOC is the demarcation of 100%；
(6) repeating step (4) once, described management system completes capacity verification and the SOC of described ferric phosphate lithium cell
Demarcating, full charge and discharge process terminates, and adds up the efficiency for charge-discharge of described management system.
9. SOC scaling method as claimed in claim 8, it is characterised in that step (4) in described scaling method
Detailed process is:
Issue described management system entirely to discharge and the order of the grid-connected electric discharge of described energy accumulation current converter；
Described management system is discharged after taking orders entirely；
Described energy accumulation current converter is grid-connected electric discharge after taking orders, until described ferric phosphate lithium cell has discharged, and the most described phosphorus
Acid lithium iron battery emptying, described energy accumulation current converter reenters holding state；
Described management system completes the lower limit capacity of described ferric phosphate lithium cell and SOC is the demarcation of 0%.
10. SOC scaling method as claimed in claim 8, it is characterised in that step (5) in described SOC scaling method
Detailed process be:
Issue described management system entirely to charge and the order of the grid-connected charging of described energy accumulation current converter；
Described management system is charged after taking orders entirely；
Described energy accumulation current converter is grid-connected charging after taking orders, until described ferric phosphate lithium cell charging complete, the most described phosphorus
Acid lithium iron battery is full of, and described energy accumulation current converter reenters holding state；
Described management system completes the upper limit capacity of described ferric phosphate lithium cell and SOC is the demarcation of 100%.
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| CN109149698A (en) * | 2018-09-11 | 2019-01-04 | 深圳市科陆电子科技股份有限公司 | Dual multiple power levels based on frequency modulation energy-storage system limit guard method |
| CN109149699A (en) * | 2018-09-12 | 2019-01-04 | 江苏博强新能源科技股份有限公司 | Energy storage battery management system and method |
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| CN109149699A (en) * | 2018-09-12 | 2019-01-04 | 江苏博强新能源科技股份有限公司 | Energy storage battery management system and method |
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| CN110676526A (en) * | 2019-10-11 | 2020-01-10 | 联方云天科技(珠海)有限公司 | Modular battery system with multilayer management system and structure |
| CN111766525A (en) * | 2020-06-02 | 2020-10-13 | 深圳市瑞能达科技有限公司 | Method for measuring charge capacity of lithium iron phosphate battery and charging method |
| CN113401034A (en) * | 2021-06-28 | 2021-09-17 | 南通国轩新能源科技有限公司 | Container type mobile storage and charging integrated system and method |
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| CN115411449B (en) * | 2022-08-15 | 2023-11-10 | 中国能源建设股份有限公司 | Super-capacity engineering battery energy storage system and control method thereof |
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