CN103633699B - A kind of mobile energy storage battery system - Google Patents
A kind of mobile energy storage battery system Download PDFInfo
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- CN103633699B CN103633699B CN201310633942.9A CN201310633942A CN103633699B CN 103633699 B CN103633699 B CN 103633699B CN 201310633942 A CN201310633942 A CN 201310633942A CN 103633699 B CN103633699 B CN 103633699B
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Abstract
Present invention is disclosed a kind of mobile energy storage battery system, including accumulator and battery management system, described accumulator is composed in series by some battery modules, battery module described in each is made up of some battery cell parallel connections, and described battery management system includes the battery management module for gathering each battery cell signal and the battery management unit for gathering each battery module signal.The system can be monitored to battery, realize the energy-storage function of high capacity cell, while battery energy storage efficiency can be effectively improved, and battery failures are excluded.
Description
Technical field
The present invention relates to battery energy storage field.
Background technology
For a long time, immature due to energy storage technology, electric energy is difficult to store, so in traditional power system, sending out
Electricity, transmission of electricity, distribution, electricity consumption are almost carried out simultaneously, and electrical network ensures the Real-time Balancing of electric energy by the means of scheduling.And work as
Modern society, accesses on a large scale in new forms of energy, under micro-capacitance sensor extensive development, the background of intelligent grid planning like a raging fire, various
New problem is gradually highlighted, and energy-storage system increasingly becomes indispensable important component part in modern power systems.
The content of the invention
The technical problem to be solved is to realize a kind of Large Copacity energy-storage battery system with management and monitoring function
System.
To achieve these goals, the technical solution used in the present invention is：A kind of mobile energy storage battery system, including electric power storage
Pond and battery management system, described accumulator are composed in series by some battery modules, and the battery module described in each is by some
Battery cell is in parallel to be constituted, and described battery management system includes gathering the battery management module of each battery cell signal and adopts
Collect the battery management unit of each battery module signal.
One battery management module gathers the signal of each battery cell in a battery module.
Described battery cell is ferric phosphate lithium cell.
Described battery management unit has CAN communication circuit.
Described battery management unit has time and data storage circuitry.
There is between described battery management module and battery cell balancing control circuit.
A kind of mobile energy storage battery system adopts control method：Battery management module described in each gathers each battery list
The voltage of body, electric current and battery temperature signal simultaneously estimate the SOC and SOH of battery cell and battery module, and SOC is defeated with SOH
Deliver to battery management unit, described battery management unit drawn according to the SOC and SOH of each battery the SOC of accumulator, SOH,
Temperature, fault message.
Described battery management system control sampling is performed according to following parameter：
Monomer battery voltage and terminal voltage sampling period：≤0.2s；
The each sampled point time allowable error of monomer battery voltage sampling：≤2ms；
Cell sampling resolution：3mV；
Monomer battery voltage sampling precision：≤±0.2%；
Module voltage sampling resolution：0.01V；
Module voltage sampling precision：≤±0.5%；
Temperature measurement accuracy：≤±2℃；
Battery set charge/discharge current measurement precision：≤ ± 0.3A (≤30A) ,≤± 1% (>30A)；
SOC estimation precision：≤6%（SOC≥85%）,≤10%（85%>SOC>30%）,≤6%（SOC≤30%）；
Balanced discharge current maxima：80mA.
Described time and data storage circuitry realize the reading of current time and record, and can realize important number
According to carrying out non-volatile memories and reading.
It is an advantage of the current invention that the system can be monitored to battery, the energy-storage function of high capacity cell is realized, together
When can effectively improve battery energy storage efficiency, and battery failures are excluded.
Description of the drawings
Below the labelling in the content and figure of every width accompanying drawing expression in description of the invention is briefly described：
Fig. 1 moves energy storage battery system structural representation.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, each component of the specific embodiment of the present invention as involved by
Shape, the mutual alignment between construction, each several part and annexation, the effect of each several part and operation principle, manufacturing process and
Operate with method etc., is described in further detail, to help inventive concept, technology of the those skilled in the art to the present invention
Scheme has more complete, accurate and deep understanding.
Mobile energy storage battery system includes accumulator and battery management system, and accumulator is by some battery module series connection groups
Into the battery module described in each is made up of some battery cell parallel connections, battery cell sampling ferric phosphate lithium cell, LiFePO4
The preferred material of large-capacity power energy-storage battery is used as, at aspects such as combination property, safety, cost, environmental protection, technology maturities
It is satisfied by demand, therefore this project alternatives ferric phosphate lithium cell（LiFePO4, abbreviation LFP）As energy storage carrier.
Battery management system（BMS）Be the unit of management of battery be for monitoring, assessing and protect battery operation shape
The electronic equipment set of state, can effectively monitor the various states (voltage, electric current, temperature, SOC, SOH etc.) of battery, can be to storing
Charging, discharging electric batteries process carries out safety management, the failure that accumulator is likely to occur is reported to the police and emergency protection is processed, to storing
The operation of battery is optimized control, it is ensured that storage battery safety, reliable, stable operation.BMS systems are can not in energy-storage system
The important component part for lacking, be energy-storage system effectively, the guarantee of reliability service, which should possess monitoring function, operation warning work(
Energy, defencive function, self-diagnostic function, balanced management function, parameter management function and local runtime status display function etc..Battery
Management system（BMS）By battery management module（) and battery management unit BMM（BMU）Constitute, battery management module gathers each
Battery cell signal, a usual battery management module gather the signal of each battery cell in a battery module, cell tube
Reason unit gathers each battery module signal.
The power circuit of battery management unit by 9～18V photovoltaic conversions of outside input be the stable running voltages of BMU and
Sampled reference voltage, and there is CAN communication circuit, the circuit can support that the CAN of three tunnel independences is used for heterogeneous networks
Communication.Also with time and data storage circuitry, the circuit can realize the reading of current time and record, and can be real
Important data are carried out into non-volatile memories and reading now.
BMU should have battery system total voltage detection circuit, and the circuit can be to the total voltage at battery system two ends（0～
900V）Carry out real-time detection.With busbar voltage detection circuit, the circuit can be to battery system busbar voltage（0～900V）
Carry out real-time detection.Circuit is detected with bus current, the circuit can be to battery system bus current（- 550A～550A）Enter
Row real-time detection, and the sense of current can be distinguished.Circuit is detected with draught temperature, it is enough to battery system air inlet and air outlet
Temperature（- 35～85 DEG C）Real-time detection is carried out, and temperature value can be communicated up.Circuit, the circuit are detected with supply voltage
Can be to the supply voltage of input BMU（9～18V）Carry out real-time detection.Detect circuit to discharge loop and charging with HVIL
The high-voltage interlocking state in loop is detected, and test value is uploaded.
BMM is mainly made up of power supply and communication, signal deteching circuit, voltage balance control, and power circuit can be by outside
9～18V supply voltages of input are converted into the stable running voltages of BMM and sampled reference voltage.With the electricity of CAN communication all the way
Road, the circuit can be realized carrying out interacting for sub-network data with BMU by CAN.With module numbering identification circuit, the electricity
Road can recognize that the numbering of BMM itself（1～32）.With balancing control circuit, the circuit can be in 12 cells
Unbalanced monomer carries out Balance route.Also have simultaneously and check circuit, the voltage of 12 road cells can be at least detected on road
(2～4V), can at least detect the temperature (- 35～85 DEG C) of 8 road temperature sampling points.
There is balancing control circuit between battery management unit and battery cell.There is cell in battery system poor
In the different time, the function of the voltage balance control of battery module can be carried out.
Above-mentioned mobile energy storage battery system adopts control method：Each battery management module gathers the electricity of each battery cell
Pressure, electric current and battery temperature signal simultaneously estimate the SOC and SOH of battery cell and battery module, and SOC and SOH is delivered to electricity
Pond administrative unit, described battery management unit drawn according to the SOC and SOH of each battery the SOC of accumulator, SOH, temperature,
Fault message.
SOC is battery charge state, estimates the function of battery system residual capacity, and SOH is cell health state, estimation electricity
The function of cell system current health state.
Battery management system control sampling is performed according to following parameter：
Monomer battery voltage and terminal voltage sampling period：≤0.2s；
The each sampled point time allowable error of monomer battery voltage sampling：≤2ms；
Cell sampling resolution：3mV；
Monomer battery voltage sampling precision：≤±0.2%；
Module voltage sampling resolution：0.01V；
Module voltage sampling precision：≤±0.5%；
Temperature measurement accuracy：≤±2℃；
Battery set charge/discharge current measurement precision：≤ ± 0.3A (≤30A) ,≤± 1% (>30A)
SOC estimation precision：≤6%（SOC≥85%）,≤10%（85%>SOC>30%）,≤6%（SOC≤30%）；
Balanced discharge current maxima：80mA；
The stability and reliability for being able to ensure that battery is performed according to above parameter.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to into other occasions, within protection scope of the present invention.
Claims (1)
1. a kind of mobile energy storage battery system, it is characterised in that：Including accumulator and battery management system, described accumulator by
Some battery modules are composed in series, and the battery module described in each is made up of some battery cell parallel connections, described battery management
System includes the battery management module for gathering each battery cell signal and the battery management list for gathering each battery module signal
Unit；
One battery management module gathers the signal of each battery cell in a battery module；
Described battery management unit has CAN telecommunication circuits；
Described battery cell is ferric phosphate lithium cell；
Described battery management unit has time and data storage circuitry；
There is between described battery management module and battery cell balancing control circuit；
Battery management module described in each gathers voltage, electric current and the battery temperature signal of each battery cell and estimates battery
The SOC and SOH of monomer and battery module, and SOC and SOH is delivered to into battery management unit, described battery management unit
The SOC of accumulator, SOH, temperature, fault message are drawn according to the SOC and SOH of each battery;
Described battery management system control sampling is performed according to following parameter：
Monomer battery voltage and terminal voltage sampling period：≤0.2s；
The each sampled point time allowable error of monomer battery voltage sampling：≤2ms；
Cell sampling resolution：3mV；
Monomer battery voltage sampling precision：≤±0.2%；
Module voltage sampling resolution：0.01V；
Module voltage sampling precision：≤±0.5%；
Temperature measurement accuracy：≤±2℃；
Battery set charge/discharge current measurement precision：During battery set charge/discharge electric current≤30A, certainty of measurement≤± 0.3A, set of cells
Charging and discharging currents>During 30A, certainty of measurement≤± 1%；
SOC estimation precision：During SOC >=85%, SOC estimation precision≤6%； 85%>SOC>When 30%, SOC estimation precision≤10%；
During SOC≤30%, SOC estimation precision≤6%；
Balanced discharge current maxima：80mA;
Described time and data storage circuitry realize the reading of current time and record, and can realize entering important data
Row non-volatile memories and reading.
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| CN201310633942.9A CN103633699B (en) | 2013-11-28 | 2013-11-28 | A kind of mobile energy storage battery system |
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| CN201310633942.9A CN103633699B (en) | 2013-11-28 | 2013-11-28 | A kind of mobile energy storage battery system |
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| CN103633699A CN103633699A (en) | 2014-03-12 |
| CN103633699B true CN103633699B (en) | 2017-04-05 |
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| CN105811488A (en) * | 2014-12-31 | 2016-07-27 | 龙能科技（苏州）有限公司 | Mobile energy storage charging system |
| CN111404186B (en) * | 2020-05-11 | 2021-12-03 | 国网湖南省电力有限公司 | Distribution transformer dynamic capacity-increasing intelligent energy storage device and control method |
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| CN103312009B (en) * | 2013-07-05 | 2015-04-29 | 中国南方电网有限责任公司调峰调频发电公司 | Method for managing battery modules of energy storage power station of power grid |
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Effective date of registration: 20190606 Address after: 221600 Peixian Economic Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Nuclear Run Light Energy Co., Ltd. Address before: 241200 No. 17 Zhanghe Road, National High-tech Industrial Development Zone, Yijiang District, Wuhu City, Anhui Province Patentee before: ANHUI LIGHT ENERGY TECHNOLOGY RESEARCH INSTITUTE CO., LTD. |
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