CN103633699A - Mobile energy storage battery system - Google Patents
Mobile energy storage battery system Download PDFInfo
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- CN103633699A CN103633699A CN201310633942.9A CN201310633942A CN103633699A CN 103633699 A CN103633699 A CN 103633699A CN 201310633942 A CN201310633942 A CN 201310633942A CN 103633699 A CN103633699 A CN 103633699A
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Abstract
The invention discloses a mobile energy storage battery system, which comprises a storage battery and a battery management system, wherein the storage battery consists of a plurality of battery modules connected in series, each battery module consists of a plurality of battery cells connected in parallel, the battery management system comprises a battery management module for collecting the signal of each battery cell and a battery management unit for collecting the signal of each battery module. The system can be used for monitoring the battery, the energy storage function of a high-capacity battery is realized, meanwhile the energy storage efficiency of the battery can be effectively improved, and the fault of the battery can be removed.
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 storage, so in traditional electric power system, generating, transmission of electricity, distribution, electricity consumption are almost carried out simultaneously, electrical network guarantees the Real-time Balancing of electric energy by the means of scheduling.And society, at new forms of energy, access on a large scale, micro-electrical network develops on a large scale, under the background of intelligent grid planning like a raging fire, various new problems highlight gradually, energy-storage system more and more becomes important component part indispensable in modern power systems.
Summary of the invention
Technical problem to be solved by this invention is to realize a kind of large capacity energy-storage battery system with management and monitoring function.
To achieve these goals, the technical solution used in the present invention is: a kind of mobile energy-storage battery system, comprise storage battery and battery management system, described storage battery is composed in series by some battery modules, battery module described in each consists of some battery cell parallel connections, and described battery management system comprises the battery management module that gathers each battery cell signal and the battery management unit that gathers each battery module signal.
A 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 telecommunication circuit.
Described battery management unit has time and data storage circuitry.
Between described battery management module and battery cell, there is balancing control circuit.
A kind of mobile energy-storage battery system adopts control method: the battery management module described in each gathers voltage, electric current and the battery temperature signal of each battery cell SOC and the SOH of estimating battery monomer and battery module, and SOC and SOH are delivered to battery management unit, described battery management unit draws SOC, SOH, temperature, the fault message of storage battery according to the SOC of each battery and SOH.
Described battery management system is controlled sampling and is carried out according to following parameter:
Monomer battery voltage and terminal voltage sampling period :≤0.2s;
Monomer battery voltage each sampled point time permissible error :≤2ms that samples;
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 are realized reading and record of current time, and can realize important data are carried out to non-volatile memories and read.
The invention has the advantages that this system can monitor battery, realize the energy-storage function of high capacity cell, can effectively improve battery energy storage efficiency, and battery failures is got rid of simultaneously.
Accompanying drawing explanation
Below the content of every width accompanying drawing expression in specification of the present invention and the mark in figure are briefly described:
Fig. 1 moves energy-storage battery system configuration schematic diagram.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and operation principle, manufacturing process and operation using method etc., be described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present invention, technical scheme.
Mobile energy-storage battery system comprises storage battery and battery management system, storage battery is composed in series by some battery modules, battery module described in each consists of some battery cell parallel connections, battery cell sampling ferric phosphate lithium cell, LiFePO4 is the preferred material as large-capacity power energy-storage battery, at aspects such as combination property, safety, cost, environmental protection, technology maturities, all satisfy the demands, therefore this project selects ferric phosphate lithium cell (LiFePO4 is called for short LFP) as energy storage carrier.
Battery management system (BMS) is that the unit of management of battery is the electronic equipment set for monitoring, assess and protecting battery operation state; can effectively monitor the various states (voltage, electric current, temperature, SOC, SOH etc.) of battery; can carry out safety management to storage battery charge and discharge process; the fault that may occur storage battery is reported to the police and emergency protection is processed; operation to storage battery is optimized control, guarantees storage battery safety, reliable, stable operation.BMS system is indispensable important component part in energy-storage system; be that energy-storage system is effective, the assurance of reliability service, it should possess monitoring function, operation warning function, defencive function, self-diagnostic function, balanced management function, parameter management function and local runtime status display function etc.Battery management system (BMS) consists of battery management module (BMM) and battery management unit (BMU), battery management module gathers each battery cell signal, a common battery management module gathers the signal of each battery cell in a battery module, and battery management unit gathers each battery module signal.
The power circuit of battery management unit is converted into by 9～18V voltage of outside input operating voltage and the sampling reference voltage that BMU is stable, and has CAN telecommunication circuit, this circuit can support three tunnels independently CAN bus for the communication of heterogeneous networks.Also have time and data storage circuitry, this circuit can be realized reading and record of current time, and can realize important data are carried out to non-volatile memories and read.
BMU should have battery system total voltage detection circuit, and this circuit can detect in real time to the total voltage at battery system two ends (0～900V).Have busbar voltage testing circuit, this circuit can detect in real time to battery system busbar voltage (0～900V).Have bus current testing circuit, this circuit can detect in real time to battery system bus current (550A～550A), and can distinguish the sense of current.There is draught temperature testing circuit, enough the temperature of battery system air inlet and air outlet (35～85 ℃) is detected in real time, and temperature value upwards can be transmitted.Have supply power voltage testing circuit, this circuit can detect in real time to the supply power voltage (9～18V) of input BMU.There is HVIL testing circuit the high-voltage interlocking state of discharge loop and charge circuit is detected, and test value is uploaded.
BMM mainly consists of power supply and communication, signal deteching circuit, voltage balance control, and power circuit can be converted into 9～18V supply power voltage of outside input operating voltage and the sampling reference voltage that BMM is stable.Have a road CAN telecommunication circuit, this circuit can be realized with BMU and be carried out the mutual of subnet data by CAN bus.Have module numbering identification circuit, this circuit can identify the numbering (1～32) of BMM self.Have balancing control circuit, this circuit can carry out equilibrium to unbalanced monomer in 12 cells and control.Also have check circuit, the voltage (2～4V) of 12 road cells at least can be detected in road simultaneously, at least can detect the temperature (35～85 ℃) of 8 road temperature sampling points.
Between battery management unit and battery cell, have and have balancing control circuit.When cell difference appears in battery system, can carry out the function of the voltage balance control of battery module.
Above-mentioned mobile energy-storage battery system adopts control method: each battery management module gathers voltage, electric current and the battery temperature signal of each battery cell SOC and the SOH of estimating battery monomer and battery module, and SOC and SOH are delivered to battery management unit, described battery management unit draws SOC, SOH, temperature, the fault message of storage battery according to the SOC of each battery and SOH.
SOC is battery charge state, the function of estimating battery system spare capacity, and SOH is cell health state, the function of the current health status of estimating battery system.
Battery management system is controlled sampling and is carried out according to following parameter:
Monomer battery voltage and terminal voltage sampling period :≤0.2s;
Monomer battery voltage each sampled point time permissible error :≤2ms that samples;
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;
According to above parameter, carry out stability and the reliability that can guarantee battery.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (9)
1. a mobile energy-storage battery system, it is characterized in that: comprise storage battery and battery management system, described storage battery is composed in series by some battery modules, battery module described in each consists of some battery cell parallel connections, and described battery management system comprises the battery management module that gathers each battery cell signal and the battery management unit that gathers each battery module signal.
2. mobile energy-storage battery system according to claim 1, is characterized in that: a battery management module gathers the signal of each battery cell in a battery module.
3. mobile energy-storage battery system according to claim 1, is characterized in that: described battery cell is ferric phosphate lithium cell.
4. mobile energy-storage battery system according to claim 1, is characterized in that: described battery management unit has CAN telecommunication circuit.
5. mobile energy-storage battery system according to claim 1, is characterized in that: described battery management unit has time and data storage circuitry.
6. mobile energy-storage battery system according to claim 1, is characterized in that: between described battery management module and battery cell, have balancing control circuit.
7. a mobile energy-storage battery system adopts control method: it is characterized in that: the battery management module described in each gathers voltage, electric current and the battery temperature signal of each battery cell SOC and the SOH of estimating battery monomer and battery module, and SOC and SOH are delivered to battery management unit, described battery management unit draws SOC, SOH, temperature, the fault message of storage battery according to the SOC of each battery and SOH.
8. mobile energy-storage battery system according to claim 7, is characterized in that:
Described battery management system is controlled sampling and is carried out according to following parameter:
Monomer battery voltage and terminal voltage sampling period :≤0.2s;
Monomer battery voltage each sampled point time permissible error :≤2ms that samples;
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.
9. mobile energy-storage battery system according to claim 7, is characterized in that: described time and data storage circuitry are realized reading and record of current time, and can realize important data are carried out to non-volatile memories and read.
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811488A (en) * | 2014-12-31 | 2016-07-27 | 龙能科技（苏州）有限公司 | Mobile energy storage charging system |
| CN111404186A (en) * | 2020-05-11 | 2020-07-10 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480141A (en) * | 2010-11-25 | 2012-05-30 | 黄学正 | Device and method for equalizing batteries |
| CN103178579A (en) * | 2011-12-26 | 2013-06-26 | 三洋电机株式会社 | Charging current determining method and battery pack |
| CN103312009A (en) * | 2013-07-05 | 2013-09-18 | 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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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480141A (en) * | 2010-11-25 | 2012-05-30 | 黄学正 | Device and method for equalizing batteries |
| CN103178579A (en) * | 2011-12-26 | 2013-06-26 | 三洋电机株式会社 | Charging current determining method and battery pack |
| CN103312009A (en) * | 2013-07-05 | 2013-09-18 | 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811488A (en) * | 2014-12-31 | 2016-07-27 | 龙能科技（苏州）有限公司 | Mobile energy storage charging system |
| CN111404186A (en) * | 2020-05-11 | 2020-07-10 | 国网湖南省电力有限公司 | Distribution transformer dynamic capacity-increasing intelligent energy storage device and control method |
| 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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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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