CN103840523A - Information and energy distribution and expansion device of multiple battery packs - Google Patents
Information and energy distribution and expansion device of multiple battery packs Download PDFInfo
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- CN103840523A CN103840523A CN201410082237.9A CN201410082237A CN103840523A CN 103840523 A CN103840523 A CN 103840523A CN 201410082237 A CN201410082237 A CN 201410082237A CN 103840523 A CN103840523 A CN 103840523A
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Abstract
The invention relates to an information and energy distribution and expansion device of multiple battery packs. A battery pack central control module and a plurality of independent battery management modules are connected to a CAN bus in parallel, information transmission is carried out through the CAN bus, each battery management module comprises a collecting unit, a balance unit and a master control unit, the battery management modules manage the corresponding battery packs respectively, the battery pack central control module is connected with an upper computer, upper computer configuration parameters are sent to the battery pack central control module, the battery pack central control module sends battery pack data received by battery management modules to the upper computer, a charging device is connected with the battery packs through the battery pack central control module, and the battery packs are connected with external loads through the battery pack central control module. Under the condition of not changing other module software, the battery management modules can be expanded only by changing dial switches on the collecting units and the control units, and the device has the advantages of being flexible in structure, strong in adaptability, convenient to expand and the like.
Description
Technical field
The present invention relates to a kind of battery management technology, particularly a kind of information of many battery pack and energy distribution expanding unit.
Background technology
Along with the development of new energy technology, battery also starts to use as electrical source of power, because monomer battery voltage is too low, when use, often cell string cascade are used, so that higher output voltage and larger drive current to be provided, present many high power battery power supplies all adopt the mode of multiple cell strings cascade to form battery pack system provides energy.
Battery pack is in charge and discharge process, and the physics and chemistry characteristic of cell can produce inconsistent variation, forms the performance difference between cell, the battery working long hours under this state, and will shorten useful life; Have influence on the consistency of battery pack simultaneously, also can reduce the whole service life of cascade battery pack.Battery management system can gather the monomer voltage of battery, and the data such as monomer temperature and battery, simultaneously according to these data, are monitored and the management such as protection battery, improve useful life and the service efficiency of battery.
Along with power requirement is improved constantly, the joint number of battery increases, and how scientificlly and effectively according to load variations demand, the energy of reasonable disposition battery pack, becomes the problem of Chinese scholars extensive concern; Therefore study expansion structure, flexibly battery set management control device and method easily and become one of current focus.
Summary of the invention
The present invention be directed to the problem of many battery capacity coupling importance, a kind of information and energy distribution expanding unit of many battery pack have been proposed, can collect the floor data of each battery pack in bus, extract and analyze, according to system loading condition, carry out capability distribution and the expansion of battery management module.
Technical scheme of the present invention is: a kind of information of many battery pack and energy distribution expanding unit, comprise host computer, charging device, a battery pack central control module and some independently battery management module, battery pack central control module and some independently battery management module are connected in parallel in CAN bus, carry out information transmission by CAN bus, each battery management module comprises a collecting unit, a balanced unit and a main control unit, each battery management module is managed separately corresponding battery pack, battery pack central control module is connected with host computer, host computer configuration parameter send battery pack central control module, the battery pack data that battery pack central control module receives battery management module are sent host computer, charging device connects each battery pack by battery pack central control module, each battery pack connects extraneous load by battery pack central control module.
Described battery pack central control module comprises charge port, discharge port, CAN communication unit, RS232 communication unit, load analysis unit, connection in series-parallel dispensing unit, switch matrix unit and data processing unit, charge port, discharge port connects respectively charging device and battery pack, CAN communication unit and RS232 communication unit connect respectively battery management module and host computer, load analysis unit gathers load data and send data processing unit, the series parallel structure of battery pack is controlled in connection in series-parallel dispensing unit and the output of switch matrix unit, data processing unit reads the operational order of host computer by RS232 communication unit, data processing unit is communicated and controls battery management module by CAN communication unit.
The monomer voltage of the collecting unit timing acquiring battery in described battery management module, monomer temperature and electric current real time information, timing is communicated by letter and is delivered to main control unit by CAN, main control unit outputs to balanced unit after receiving battery information analysis, and balanced unit carries out monomer equilibrium according to the data from main control unit to battery pack and controls.
Beneficial effect of the present invention is: the information of the many battery pack of the present invention and energy distribution expanding unit, can be in the situation that not changing other module software, only need the toggle switch on change collecting unit and control unit, just can carry out the expansion of battery management module, there is flexible structure, strong adaptability, expand the features such as convenient.
Brief description of the drawings
Fig. 1 is information and the energy distribution expanding unit structural representation of the many battery pack of the present invention;
Fig. 2 is battery pack central control module structural representation in the information of the many battery pack of the present invention and energy distribution expanding unit.
Embodiment
The information of many battery pack and energy distribution expanding unit structural representation as shown in Figure 1, a battery pack central control module and some independently battery management module, all modules are connected in parallel in CAN bus, carry out information transmission by CAN bus, each battery management module comprises a collecting unit, a balanced unit and a main control unit, and each battery management module is managed separately corresponding batteries group; Battery pack central control module is connected with host computer, can all modules be monitored and be arranged by host computer.Battery management module need to be monitored and arrange to upper computer selecting, send data request command, when certain battery management module is received after data request command, communicate by letter with central control module by CAN bus, battery pack central control module sends to data in host computer again, or by host computer configuration parameter.Charging device connects each battery pack by battery pack central control module, and each battery pack connects extraneous load by battery pack central control module.This structure is easy to communication expansion, energy spread and energy configuration.
Suppose a battery pack 1 of needs in present system, connect the communications cable and the electric power cable of battery pack central control module and battery management module 1, the toggle switch of the collecting unit in battery management module 11 is dialled into 0x00001, and the toggle switch of main control unit 1 is dialled into 0x00001.Now collecting unit 1 timing acquiring in battery management module 1 measure the monomer voltage of battery; the information such as monomer temperature and electric current; then timing is communicated by letter and is delivered in main control unit 1 by CAN; main control unit 1 is to the data analysis of receiving; to carry out battery management; battery management comprises voltage protection, current protection and temperature protection, and obtain battery health condition information according to these information.Balanced unit 1 carries out the balanced control of monomer according to the data from main control unit 1 to this battery pack.Toggle switch is the communication mode of agreement, also can be understood as address information code.
Host computer can be monitored and arrange the work of battery management module 1, host computer sends operational order, by battery pack central control module, operational order is analyzed, produce new operational order battery management module 1 is communicated and controlled, 1 analysis of battery management module operates accordingly from the operational order of battery pack central control module.In the time access load or charger having been detected, battery pack central control module can also discharge and recharge control by charge port and discharge port.
If strengthen voltage or the power of system, must increase again a battery pack and corresponding battery management module.The concrete way of communication expansion is that the toggle switch of the collecting unit of battery management module 22 is allocated to 0x00002, and the toggle switch of main control unit 2 is allocated to 0x00002.Then connect electric power cable and the communications cable.Now battery management module 2 can have the same working condition with battery management module 1.
Host computer also can be monitored and arrange the work of battery management module 2, operating process and identical to battery management module 1.Battery pack central control module can also carry out energy spread, can be configured by host computer the series parallel structure of existing battery pack, by analysis, process the rear connection in series-parallel configuration information that forms, drive connection in series-parallel dispensing unit, connection in series-parallel dispensing unit again control switch matrix unit is expanded battery pack power structure.
By the operation of analogizing, batteries management system can access more battery pack, and can carry out the optimal energy configuration of battery pack, under nominal situation, battery pack central control module gathers the health information of each battery pack by CAN communication unit, in the time that bearing power or host computer configuration information change, after the analysis of data processing unit, processing, by the health status of the adaptive battery pack in switch matrix unit.
Battery pack central control module structural representation as shown in Figure 2, has described structure and the working method of battery pack central control module.Described battery pack central control module structure, comprise charge port, discharge port, CAN communication unit, RS232 communication unit, load analysis unit, connection in series-parallel dispensing unit, switch matrix unit and data processing unit, fill, discharge port is mainly used in the charging and discharging of battery pack, CAN communication unit and RS232 communication unit for the communicating by letter of battery management module and host computer, load analysis unit gathers load data, for analyzing, computational load operating mode power, send data processing unit by data, connection in series-parallel dispensing unit and switch matrix unit are for controlling the series parallel structure of battery pack, data processing unit is for Control on Communication, data processing unit reads the operational order of host computer by RS232 communication unit, according to operational order, by CAN communication unit, battery management module is communicated and controlled.Can control energy spread and energy configuration simultaneously.
Host computer sends operational order, pass in data processing unit by RS232 communication unit, data processing unit is analyzed operational order again, produce new operational order, by CAN communication unit, battery management module is communicated and controlled, battery management module is analyzed from the operational order of battery pack central control module and is operated accordingly.
In the time access load or charger having been detected, the data processing unit in battery pack central control module can also discharge and recharge control by charge port and discharge port.
Battery pack central control module can also carry out energy spread.Can be configured by host computer the series parallel structure of existing battery pack, load analysis unit obtains present load situation, after data processing unit analysis, processing, form connection in series-parallel configuration information, drive connection in series-parallel dispensing unit, connection in series-parallel dispensing unit again control switch matrix unit is expanded battery pack power structure.
Battery pack central control module can carry out the optimal energy configuration of battery pack, under nominal situation, data processing unit gathers the health information of each battery pack by CAN communication unit, in the time that bearing power or host computer configuration information change, obtain present load situation by load analysis unit, after the analysis of data processing unit, processing, by the health status of the adaptive battery pack in switch matrix unit.
Claims (3)
1. the information of battery pack more than one kind and energy distribution expanding unit, it is characterized in that, comprise host computer, charging device, a battery pack central control module and some independently battery management module, battery pack central control module and some independently battery management module are connected in parallel in CAN bus, carry out information transmission by CAN bus, each battery management module comprises a collecting unit, a balanced unit and a main control unit, each battery management module is managed separately corresponding battery pack, battery pack central control module is connected with host computer, host computer configuration parameter send battery pack central control module, the battery pack data that battery pack central control module receives battery management module are sent host computer, charging device connects each battery pack by battery pack central control module, each battery pack connects extraneous load by battery pack central control module.
2. the information of many battery pack and energy distribution expanding unit according to claim 1, it is characterized in that, described battery pack central control module comprises charge port, discharge port, CAN communication unit, RS232 communication unit, load analysis unit, connection in series-parallel dispensing unit, switch matrix unit and data processing unit, charge port, discharge port connects respectively charging device and battery pack, CAN communication unit and RS232 communication unit connect respectively battery management module and host computer, load analysis unit gathers load data and send data processing unit, the series parallel structure of battery pack is controlled in connection in series-parallel dispensing unit and the output of switch matrix unit, data processing unit reads the operational order of host computer by RS232 communication unit, data processing unit is communicated and controls battery management module by CAN communication unit.
3. the information of many battery pack and energy distribution expanding unit according to claim 1, it is characterized in that, the monomer voltage of the collecting unit timing acquiring battery in described battery management module, monomer temperature and electric current real time information, timing is communicated by letter and is delivered to main control unit by CAN, main control unit outputs to balanced unit after receiving battery information analysis, and balanced unit carries out monomer equilibrium according to the data from main control unit to battery pack and controls.
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| CN201410082237.9A CN103840523A (en) | 2014-03-07 | 2014-03-07 | Information and energy distribution and expansion device of multiple battery packs |
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| CN201410082237.9A CN103840523A (en) | 2014-03-07 | 2014-03-07 | Information and energy distribution and expansion device of multiple battery packs |
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| CN104505910A (en) * | 2015-01-14 | 2015-04-08 | 中国能源建设集团广东省电力设计研究院有限公司 | Energy storage cell stack and monitoring system and monitoring method thereof |
| CN105990871A (en) * | 2015-02-27 | 2016-10-05 | 中兴通讯股份有限公司 | Battery and method for controlling the same |
| CN112208331A (en) * | 2020-10-12 | 2021-01-12 | 天能帅福得能源股份有限公司 | Safety maintenance switch system for BMS (battery management system) of electric bicycle |
| CN112737040A (en) * | 2020-12-30 | 2021-04-30 | 西安精密机械研究所 | UUV battery pack intelligent cascading extension architecture and cascading extension method |
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| CN112737040B (en) * | 2020-12-30 | 2023-12-19 | 西安精密机械研究所 | UUV battery pack intelligent cascade expansion architecture and cascade expansion method |
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Application publication date: 20140604 |