CN202309138U - Lithium-iron-phosphate battery-managing system for substation direct-current power-supply system - Google Patents
Lithium-iron-phosphate battery-managing system for substation direct-current power-supply system Download PDFInfo
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- CN202309138U CN202309138U CN2011204157418U CN201120415741U CN202309138U CN 202309138 U CN202309138 U CN 202309138U CN 2011204157418 U CN2011204157418 U CN 2011204157418U CN 201120415741 U CN201120415741 U CN 201120415741U CN 202309138 U CN202309138 U CN 202309138U
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- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title abstract 4
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000011156 evaluation Methods 0.000 claims abstract description 4
- 239000005955 Ferric phosphate Substances 0.000 claims description 30
- 229940032958 ferric phosphate Drugs 0.000 claims description 30
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 30
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 30
- 229910052744 lithium Inorganic materials 0.000 claims description 30
- 230000001131 transforming effect Effects 0.000 claims description 13
- 238000003745 diagnosis Methods 0.000 claims description 5
- 238000007667 floating Methods 0.000 abstract description 13
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000006870 function Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a lithium-iron-phosphate battery-managing system for a substation direct-current power-supply system, which comprises a monitoring screen, a main control module, a centralized monitoring module, a plurality of acquisition modules, a plurality of equalizing modules and storage batteries, and is characterized in that: the main control module is formed by a communication unit, a central processing unit, a display-storing unit, an SOC (System On Chip) estimating unit and an expert diagnosing unit; the acquisition modules and the equalizing modules are directly connected with the storage batteries which are connected in series and grouped, and are communicated with the main control module through CAN (Controller Area Network) buses; the monitoring screen and the centralized monitoring module are connected with the main control module through the CAN buses; and the centralized monitoring module is used for controlling a charger and a relay switch to carry out equalized-charging and floating-charging management for a battery pack in real time. The system can be used for acquiring the voltage, the current and the temperature of a lithium-iron-phosphate battery system in real time, diagnosing the operating states of the batteries and carrying out coordinated management for the functions of equalized control, power evaluation, equalized charging, floating charging and the like of the lithium-iron-phosphate battery system.
Description
Technical field
The utility model relates to a kind of ferric phosphate lithium cell management system, belongs to the batteries management system field, relates in particular to a kind of transforming plant DC power-supply system and uses the ferric phosphate lithium cell management system.
Background technology
At present, the VRLA battery in the transforming plant DC power-supply system adopts the battery logging that voltage, temperature and the electric current of battery are monitored, and the information of gathering is sent to the centralized monitor module.The task of the capacity of battery, fault distinguishing is accomplished by the centralized monitor module under this mode, and can not carry out equilibrium control, the useful life of having reduced battery to battery under this scheme.Ferric phosphate lithium cell is widely used in every field such as energy storage device, electric automobile, electric bicycle, electric tool because of the advantage of himself.The ferric phosphate lithium cell management system application is found in application number in the electric automobile field be 200910197023.5 application for a patent for invention: used for electric vehicle power ferric phosphate lithium cell group management system and method for work thereof.The main purpose of this application for a patent for invention is the problem of management that solves used for electric vehicle power ferric phosphate lithium cell group, the useful life of improving battery pack.
Yet, because ferric phosphate lithium cell needs independent setting battery management system to using the sensitiveness of environment in the use of transformer station's power-supply system.Simultaneously, battery management system need carry out the on-Line Voltage adjustment to series connection each battery cell in groups of ferric phosphate lithium cell, prevents overcharging and putting excessively of single battery.And do not see as yet about the report of transforming plant DC power-supply system with the correlation technique of ferric phosphate lithium cell management system in the existing document.
In view of this, be necessary to provide a kind of transforming plant DC power-supply system that is applicable to use the ferric phosphate lithium cell management system, need to solve commercial Application.
Summary of the invention
In order to address the above problem; The purpose of the utility model is; Provide a kind of transforming plant DC power-supply system that is applicable to use the ferric phosphate lithium cell management system; Solve ferric phosphate lithium cell the coordination control problem between the long-term floating charge problem during operate as normal, ferric phosphate lithium cell and the existing power transformation station power source system charger and ferric phosphate lithium cell and the quantity of connecting in the power transformation station power source system when many, the balanced control problem of ferric phosphate lithium cell.
The technical scheme that the utility model adopted is: a kind of transforming plant DC power-supply system is used the ferric phosphate lithium cell management system, is made up of monitor screen, main control module, centralized monitor module, some acquisition modules and balance module and storage battery, it is characterized in that:
Said main control module is made up of communication unit, CPU, demonstration memory cell, SOC evaluation unit and expert diagnosis unit five parts; Said acquisition module directly is connected with the storage battery that series connection is divided into groups with balance module, and realizes that through CAN bus and main control module communication is connected; Said monitor screen all is connected with main control module through the CAN bus with the centralized monitor module; Centralized monitor module controls charger and relay switch in real time to battery pack all fill, float management.
Aforesaid transforming plant DC power-supply system is used the ferric phosphate lithium cell management system; It is characterized in that; Said acquisition module and balance module are divided into the plurality of sub module in groups according to battery series connection; The voltage of the cell that the acquisition module collection is divided into groups and voltage, electric current, the temperature of battery pack, and send the data of gathering to main control module through the CAN bus, main control module is handled data through control algolithm in advance; Judge the operation conditions of battery, through balance module cell is carried out balanced management simultaneously.
The beneficial effect of the utility model is: native system can be gathered voltage, electric current, the temperature of ferric phosphate lithium cell system in real time; The running status of diagnosis battery; And the SOC of counting cell; Communicate through CAN bus or RS485 and charger and host computer, to equilibrium control, the power assessments of ferric phosphate lithium cell system, all fill, function such as floating charge coordinates and manages.
Description of drawings
Fig. 1 is the structured flowchart of the transforming plant DC power-supply system of the utility model embodiment with the ferric phosphate lithium cell management system.
Fig. 2 for the transforming plant DC power-supply system of the utility model embodiment with the battery pack of ferric phosphate lithium cell management system all fill, the floating charge flow chart.
Embodiment
Below, the utility model is described further in conjunction with accompanying drawing through embodiment.
The symbol description of accompanying drawing 2: U
oThe voltage at-batteries two ends; U
rThe threshold voltage of-floating charge; The residual capacity of SOC-battery pack.
A kind of transforming plant DC power-supply system that the utility model embodiment provides is used the ferric phosphate lithium cell management system, is made up of monitor screen, main control module, some acquisition modules and balance module and storage battery.Said main control module is made up of communication unit, CPU, demonstration memory cell, SOC evaluation unit and expert diagnosis unit five parts; Said acquisition module directly is connected with the storage battery that series connection is divided into groups with balance module, and realizes that through CAN bus and main control module communication is connected; Said monitor screen is connected with main control module through the CAN bus.
As shown in Figure 1; Our station adopts the communication mode of CAN bus as whole system with the ferric phosphate lithium cell management system; Through communicating by letter charger and relay switch KM1 and KM2 are controlled, realize that ferric phosphate lithium cell all filling in station power source system, floating charge and shallow fill the shallow management of putting with centralized monitoring system.This battery management system is made up of a main control module and some acquisition modules, balance module.Acquisition module and balance module directly are connected on the battery pack; Link to each other with main control module respectively through the CAN bus then; Also be connected between main control module and the centralized monitor module through the CAN bus; According to the monomer battery voltage and voltage, electric current, the temperature of battery pack that collection plate is gathered, the running status of judgement battery, through centralized monitor module controls charger and relay switch to battery all fill, the shallow management of putting is filled in floating charge and shallow.
In the present embodiment; Main control module uses arithmetic speed microcontroller faster; Microcontroller inside carries 2 above CAN bus control units, and main control module receives voltage, electric current, the temperature that acquisition module is gathered through the CAN bus, and the data of gathering are handled accordingly; According to the algorithm in expert diagnosis unit and the SOC computing unit, judge present health status of battery and dump energy then.
In the present embodiment; Earlier, calculate the corresponding magnitude of voltage △ U that compensates this temperature change under according to the draw curve chart of battery capacity temperature influence of the characteristic of ferric phosphate lithium cell, then with this profile memory in the memory cell of main control module; Through detecting the temperature of batteries; In real time the voltage and current that charges is compensated during batteries charging, avoid occurring overcharging, improve the life-span of storage battery.
In the present embodiment, main control module is through the abnormal signal of big capacity EPROM storage storage battery, and when EPROM data occurred and overflows, up-to-date data can be automatically begin cover data from the first address of EPROM.
Store the temperature compensation curve of ferric phosphate lithium cell in the said main control module in advance, according to the battery temperature that detects, contrast compensated curve counting cell group even charging voltage, electric current and float charge voltage, and set point is sent to the centralized monitor module.
In above-mentioned ferric phosphate lithium cell management system, when the abnormal work situation appearred in battery pack or cell, main control module can be preserved time and reason that this situation takes place automatically, and can inquire about relative recording through the liquid crystal display screen on the main control module.
In the present embodiment, main control module all fills and floating charge storage battery through the algorithm in the program, and idiographic flow is as shown in Figure 2.
As shown in Figure 2, Uo is the battery pack voltage, and Ur is predefined floating charge threshold voltage, and SOC is the dump energy of battery pack.At first detect the SOC of Uo and counting cell group, < Ur then all fills batteries as if Uo; Otherwise then carry out floating charge, after the battery charge, if voltage reaches the floating charge threshold value; To all fill so and transfer floating charge to, under the floating charge state, if SOC 95%; Break off relay switch KM2 so, adjust the output voltage and the electric current of charger simultaneously, make batteries be in discharge condition to the frequent electric on the dc bus; The SOC that discharges into when batteries ≤80% the time, compares Uo and Ur the execution that circulates again of whole charging and discharging process.
Claims (2)
1. a transforming plant DC power-supply system is used the ferric phosphate lithium cell management system, is made up of monitor screen, main control module, centralized monitor module, some acquisition modules and balance module and storage battery, it is characterized in that:
Said main control module is made up of communication unit, CPU, demonstration memory cell, SOC evaluation unit and expert diagnosis unit five parts; Said acquisition module directly is connected with the storage battery that series connection is divided into groups with balance module, and realizes that through CAN bus and main control module communication is connected; Said monitor screen all is connected with main control module through the CAN bus with the centralized monitor module; Centralized monitor module controls charger and relay switch in real time to battery pack all fill, float management.
2. transforming plant DC power-supply system according to claim 1 is used the ferric phosphate lithium cell management system; It is characterized in that; Said acquisition module and balance module are divided into the plurality of sub module in groups according to battery series connection; The voltage of the cell that the acquisition module collection is divided into groups and voltage, electric current, the temperature of battery pack, and send the data of gathering to main control module through the CAN bus, main control module is handled data through control algolithm in advance; Judge the operation conditions of battery, through balance module cell is carried out balanced management simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204157418U CN202309138U (en) | 2011-10-27 | 2011-10-27 | Lithium-iron-phosphate battery-managing system for substation direct-current power-supply system |
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| CN2011204157418U CN202309138U (en) | 2011-10-27 | 2011-10-27 | Lithium-iron-phosphate battery-managing system for substation direct-current power-supply system |
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| CN202309138U true CN202309138U (en) | 2012-07-04 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751759A (en) * | 2012-07-11 | 2012-10-24 | 北京国电通网络技术有限公司 | Control method and control system for battery |
| CN102769154A (en) * | 2012-07-12 | 2012-11-07 | 中国长江三峡集团公司 | Storage battery charging measurement and control technology with soft-start characteristic |
| CN103324180A (en) * | 2013-06-20 | 2013-09-25 | 曙鹏科技（深圳）有限公司 | Battery pack remote monitoring system and method and energy storage and power supply device remote monitoring system |
| CN103501039A (en) * | 2013-10-15 | 2014-01-08 | 深圳奥特迅电力设备股份有限公司 | Charging monitoring system for nuclear power station and charging monitoring method for nuclear power station |
| CN104112877A (en) * | 2014-06-25 | 2014-10-22 | 许继电气股份有限公司 | Lithium battery pack maintenance and performance detection apparatus |
| CN104518530A (en) * | 2013-09-29 | 2015-04-15 | 国网辽宁省电力有限公司沈阳供电公司 | Lithium battery pack management system |
| CN106160123A (en) * | 2016-08-31 | 2016-11-23 | 江苏春兰清洁能源研究院有限公司 | A kind of distributed battery management system using CAN wireless communication technique |
| CN107482728A (en) * | 2017-09-04 | 2017-12-15 | 东莞钜威动力技术有限公司 | The battery signal Acquisition Circuit and cell managing device of power-consumption balance |
| CN107612083A (en) * | 2017-10-10 | 2018-01-19 | 无锡东方高速艇发展有限公司 | Lithium electricity ship battery management system |
| CN108110850A (en) * | 2018-01-12 | 2018-06-01 | 青岛大学 | A kind of isolated battery group system of series load and control method |
| CN108631444A (en) * | 2018-05-30 | 2018-10-09 | 国网江苏电力设计咨询有限公司 | Transforming plant DC power supply hierarchical monitoring based on ferric phosphate lithium cell manages system |
| CN111525683A (en) * | 2020-04-29 | 2020-08-11 | 广东电科院能源技术有限责任公司 | Transformer substation direct-current battery device and transformer substation direct-current battery system |
| CN115954993A (en) * | 2023-03-15 | 2023-04-11 | 北京国电光宇机电设备有限公司 | Multi-module power supply panel current-sharing charging control method and system |
-
2011
- 2011-10-27 CN CN2011204157418U patent/CN202309138U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751759A (en) * | 2012-07-11 | 2012-10-24 | 北京国电通网络技术有限公司 | Control method and control system for battery |
| CN102769154A (en) * | 2012-07-12 | 2012-11-07 | 中国长江三峡集团公司 | Storage battery charging measurement and control technology with soft-start characteristic |
| CN102769154B (en) * | 2012-07-12 | 2015-04-01 | 中国长江三峡集团公司 | Storage battery charging measurement and control technology with soft-start characteristic |
| CN103324180B (en) * | 2013-06-20 | 2016-02-03 | 曙鹏科技（深圳）有限公司 | Electric battery long distance control system and method, energy-storage power supplying apparatus long distance control system |
| CN103324180A (en) * | 2013-06-20 | 2013-09-25 | 曙鹏科技（深圳）有限公司 | Battery pack remote monitoring system and method and energy storage and power supply device remote monitoring system |
| CN104518530A (en) * | 2013-09-29 | 2015-04-15 | 国网辽宁省电力有限公司沈阳供电公司 | Lithium battery pack management system |
| CN103501039A (en) * | 2013-10-15 | 2014-01-08 | 深圳奥特迅电力设备股份有限公司 | Charging monitoring system for nuclear power station and charging monitoring method for nuclear power station |
| CN103501039B (en) * | 2013-10-15 | 2015-08-05 | 深圳奥特迅电力设备股份有限公司 | A kind of used in nuclear power station charging monitoring system and used in nuclear power station charging monitoring method |
| CN104112877A (en) * | 2014-06-25 | 2014-10-22 | 许继电气股份有限公司 | Lithium battery pack maintenance and performance detection apparatus |
| CN106160123A (en) * | 2016-08-31 | 2016-11-23 | 江苏春兰清洁能源研究院有限公司 | A kind of distributed battery management system using CAN wireless communication technique |
| CN107482728A (en) * | 2017-09-04 | 2017-12-15 | 东莞钜威动力技术有限公司 | The battery signal Acquisition Circuit and cell managing device of power-consumption balance |
| CN107612083A (en) * | 2017-10-10 | 2018-01-19 | 无锡东方高速艇发展有限公司 | Lithium electricity ship battery management system |
| CN108110850A (en) * | 2018-01-12 | 2018-06-01 | 青岛大学 | A kind of isolated battery group system of series load and control method |
| CN108631444A (en) * | 2018-05-30 | 2018-10-09 | 国网江苏电力设计咨询有限公司 | Transforming plant DC power supply hierarchical monitoring based on ferric phosphate lithium cell manages system |
| CN111525683A (en) * | 2020-04-29 | 2020-08-11 | 广东电科院能源技术有限责任公司 | Transformer substation direct-current battery device and transformer substation direct-current battery system |
| CN115954993A (en) * | 2023-03-15 | 2023-04-11 | 北京国电光宇机电设备有限公司 | Multi-module power supply panel current-sharing charging control method and system |
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| GR01 | Patent grant | ||
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Effective date of registration: 20160706 Address after: 430074 Hubei city of Wuhan province Wuchang Luo Yu Road, No. 143 Patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Address before: Nanjing City, Jiangsu Province, 210003 South Shui Road No. 8 Patentee before: State Grid Electric Power Research Insititute Patentee before: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute |
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Granted publication date: 20120704 |