CN203481890U - Lithium battery management system used for communication - Google Patents

Lithium battery management system used for communication Download PDF

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Publication number
CN203481890U
CN203481890U CN201320614264.7U CN201320614264U CN203481890U CN 203481890 U CN203481890 U CN 203481890U CN 201320614264 U CN201320614264 U CN 201320614264U CN 203481890 U CN203481890 U CN 203481890U
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main control
control unit
unit
battery pack
module
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Inventor
李松林
井辉
叶荣
王桂花
巩欣
彭广香
赵黎明
陈东旭
李玉昇
姜福林
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BEIJING BAOHE ELITE TECHNOLOGY CO LTD
China Mobile Group Design Institute Co Ltd
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BEIJING BAOHE ELITE TECHNOLOGY CO LTD
China Mobile Group Design Institute Co Ltd
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Abstract

The utility model discloses a lithium battery management system used for communication comprising a main control unit, an acquisition unit, a balance unit, a protection unit, a display alarming unit, a communication unit, and a storage unit. A first end of the acquisition unit is connected with a battery pack, and a second end is connected with the main control unit, and can be used to acquire the battery pack signals, and can be used to transmit the acquired signals to the main control unit. A first end of the balance unit is connected with the battery pack, and a second end is connected with the main control unit, and can be used to receive the control signals sent by the main control unit, and can be used to balance the battery pack according to the control signals. A first end of the protection unit is connected with the battery pack, and a second end is connected with the main control unit, and can be used to receive the control signals sent by the main control unit, and can be used to protect the battery pack according to the control signals. The display alarming unit is connected with the main control unit, and can be used to display the working state of the battery pack and send the alarming signals. The communication unit is connected with the main control unit. The storage unit is connected and communicated with the main control unit, and can be used to receive, store and/or transmit the data.

Description

Communication lithium battery management system
Technical field
The present invention relates to battery applications technical field, relate in particular to a kind of communication lithium battery management system.
Background technology
Along with the development and improvement of lithium battery technology, lithium battery is widely used among each field.Because lithium battery interior chemical reaction is complicated, technical staff is except improving the performance of lithium battery own and the life-span, also extending the lithium battery life-span and give full play to lithium battery performance in continuous research lithium battery administrative skill by test.Lithium battery administrative skill has become one of guardian technique of lithium battery applications.But lithium battery administrative skill does not also form rounded system at present, and has many defects, as, good battery charge load (SOC) estimation mode do not formed; Can not carry out accurate and perfect assessment to cell in battery pack; Can not carry out effectively equilibrium etc. to battery pack.
Summary of the invention
For this reason, the present invention proposes a kind of communication lithium battery management system that can address the above problem or that at least can partly address the above problem.
According to an aspect of the present invention, provide a kind of communication lithium battery management system, having comprised:
Main control unit, for receiving battery pack Monitoring Data, analyzes data, transmission data, send instruction and or receive instruction.
Collecting unit, the first end of described collecting unit is connected with battery pack, and the second end is connected with described main control unit, for gathering the signal of described battery pack and the signal of collection being transferred to described main control unit;
Balanced unit, the first end of described balanced unit is connected with described main control unit, and the second end is connected with battery pack, for receiving control signal that main control unit sends and according to control signal balancing battery group;
Protected location, the first end of described protected location is connected with described main control unit, and the second end is connected with battery pack, for receiving control signal that described main control unit sends and according to control signal protection battery pack;
Show and Alarm Unit, described demonstration is connected with described main control unit with Alarm Unit, for showing the operating state of battery pack and sending alarm signal;
Communication unit, the first end of described communication unit is connected with described main control unit, the second end is connected with host computer, for the data of transmitting described main control unit to host computer transfer of data that host computer is sent to described main control unit;
Memory cell, described memory cell is connected and communicates with described main control unit, for reception, storage and or conveying data.
Alternatively, according to battery management system of the present invention, described main control unit is STM32 chip.
Alternatively, according to battery management system of the present invention, described collecting unit further comprises: voltage acquisition module, current acquisition module and temperature collect module, wherein,
The first end of described voltage acquisition module is connected with described battery pack, and the second end is connected with described main control unit, for gathering battery voltage signal and described voltage signal being transferred to described main control unit;
The first end of described current acquisition module is connected with described battery pack, and the second end is connected with described main control unit, for gather battery pack current signal and by described current signal transfer to described main control unit;
The first end of described temperature collect module is connected with described battery pack, and the second end is connected with described main control unit, for gathering battery pack temperature signal and described temperature signal being transferred to described main control unit.
Alternatively, according to communication lithium battery management system of the present invention, described balanced unit is passive type balanced unit or active balanced unit.
Alternatively, according to communication lithium battery management system of the present invention, the mode that described protected location adopts comprises: metal-oxide-semiconductor parallel way, relay mode and or contactor mode.
Alternatively, according to communication lithium battery management system of the present invention, described demonstration and Alarm Unit further comprise: capacity indicating module, LCD display module and acousto-optic alarm module, wherein,
Described capacity indicating module is connected with described main control unit, for receiving the control signal of main control unit and showing the state-of-charge of battery pack;
Described LCD display module is connected with described main control unit, for receiving the control signal of main control unit and showing the state parameter of battery pack;
Described audible and visual alarm module is connected with described main control unit, for receiving the control signal of main control unit and sending alarm.
Alternatively, according to communication lithium battery management system of the present invention, described communication unit further comprises: RS485 communication module, RS232 communication module and or ethernet communication module.
Alternatively, according to communication lithium battery management system of the present invention, described memory cell further comprises: storage inside module and outer memory module, wherein,
Described main control unit and described storage inside module communication, and by data store into the neutralization of described storage inside module or from this memory module reading out data.
Described outer memory module is supported hot plug, and this memory module and main control unit or host computer communicate, for store data and or data are provided.
Communication according to the present invention adopts high performance main control unit as core with lithium battery management system, first by collecting unit, the temperature in battery charge and discharge process, electric current and voltage are carried out to system monitoring, so that the running status of the charged load of estimating battery (SOC) and judgement lithium battery group systematically; By balanced unit, the monomer battery voltage in battery pack is carried out to equilibrium; and by protected location, the battery in battery pack is further protected; when there are abnormal conditions (as: short circuit, under-voltage, overvoltage, excess temperature, low temperature or error-polarity connection etc.) in battery pack in charge and discharge process; disconnect charging and discharging circuit battery pack is protected, thus serviceability and the life-span of having improved battery pack.Secondly, the present invention is also provided with communication unit, demonstration and Alarm Unit, by RS232 Serial technology, by the cascade of RS485 system, by ethernet communication unit, connect Ethernet, by the abnormal conditions of battery pack (as: short circuit, under-voltage, overvoltage, excess temperature, low temperature or error-polarity connection etc.) are carried out to audible and visual alarm and screen display, thereby solved scene and the remote monitoring problem of communication with lithium battery management system.In addition, the present invention is also provided with memory cell, by the data stored record to battery pack running parameter and alarm situation, to facilitate staff battery pack is safeguarded and battery performance is further studied.
Accompanying drawing explanation
By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skills.Accompanying drawing is only for the object of preferred implementation is shown, and do not think limitation of the present invention.In whole accompanying drawing, by identical reference symbol, represent identical parts.Wherein in the accompanying drawings, a plurality of identical parts of alphabetic flag indication after reference number, when these parts of general reference, will omit its last alphabetic flag.In the accompanying drawings:
Fig. 1 shows the communication lithium battery management system according to one embodiment of the present invention;
Fig. 2 shows the collecting unit according to one embodiment of the present invention;
Fig. 3 shows according to the demonstration of one embodiment of the present invention and Alarm Unit;
Fig. 4 shows the communication unit according to one embodiment of the present invention;
Fig. 5 shows according to a kind of communication by the cascade system between lithium battery management system of the present invention;
Fig. 6 show according to of the present invention a kind of communicate by letter with the ethernet communication unit in lithium battery management system and with the connected mode of main control unit;
Fig. 7 shows according to a kind of communication by the connected mode of lithium battery management system and remote monitoring terminal of the present invention;
Fig. 8 shows according to a kind of communication by the memory cell in lithium battery management system of the present invention;
Wherein, lithium battery management system 1000 for communication;
Main control unit 1100, usb 1 110, MII interface 1120, collecting unit 1200, voltage acquisition unit 1210, current acquisition unit 1220, temperature collecting cell 1230, balanced unit 1300, protected location 1400, show and Alarm Unit 1500, audible and visual alarm module 1510, LCD display module 1520, capacity indicating module 1530, communication unit 1600, RS485 communication module 1610, RS232 communication module 1620, ethernet communication module 1630, DP83848 ethernet PHY controller 1631, RJ45 interface module 1632, memory cell 1700, storage inside module 1710 and outer memory module 1720, battery pack 2000, host computer 3000, the Internet 4000, the network switch 5000.
Embodiment
The invention provides many applicable creative concepts, this creativeness concept can be reflected in a large number of in concrete context.The specific embodiment of describing in following embodiments of the present invention is only as the exemplary illustration of specific implementation of the present invention, and do not form limitation of the scope of the invention.
The present invention proposes a kind of lithium battery management system 1000 for communication, comprising: main control unit 1100, collecting unit 1200, balanced unit 1300, protected location 1400, display alarm unit 1500, communication unit 1600 and memory cell 1700.Main control unit 1100, for receiving battery pack Monitoring Data, is analyzed data, and transmission data, send instruction, receive instruction.The first end of collecting unit 1200 is connected with battery pack 2000, and the second end is connected with described main control unit 1100, for gathering the signal of described battery pack 2000 and the signal of described collection being transferred to described main control unit 1100; The first end of balanced unit 1300 is connected with main control unit 1100, and the second end is connected with battery pack 2000, for receiving control signal that main control unit 1100 sends and according to described control signal balancing battery group 2000; The first end of protected location 1400 is connected with battery pack 2000, and the second end is connected with described main control unit 1100, for receiving control signal that main control unit 1100 sends and according to described control signal protection battery pack 2000; Display alarm unit 1500 is connected with described main control unit 1100, for showing the operating state of battery pack 2000 and sending alarm signal; Described communication unit 1600 is connected with described main control unit 1100, and host computer 3000 and described main control unit 1100 are communicated; Memory cell 1700 is connected with described main control unit 1100, the data that send for receiving and store described main control unit 1100.
Wherein, the control core that main control unit 1100 is battery management system, preferred STM32F107 chip, these main control unit 1100 major functions comprise: receive the battery pack Monitoring Data gathering, analyze data, transmission data, transmission instruction, receives instruction.
Main control unit 1100 sends the port that instruction real-time query collecting unit 1200 is connected with this main control unit 1100, obtains the working status parameter that collecting unit 1200 is transferred to the battery pack 2000 of described port; 1100 pairs of data that obtain of main control unit are processed, and by initial data and analysis result send to show with Alarm Unit 1500 carry out demonstration and or alarm; And, main control unit 1100 passes through communication unit 1600 to host computer 3000 real-time Transmission fetched datas, in the administrative terminal system of host computer 3000, show, and the data of obtaining to memory cell 1700 transmission, described memory cell 1700 is the data of interocclusal record battery pack on time; Main control unit 1100, by analyzing the battery pack data of obtaining, when needs carry out balanced management to battery pack, transmits control signal to balanced unit 1300, starts 1300 pairs of battery pack of balanced control unit and carries out inner equilibrium control; Host computer 3000 can send order to main control unit 1100, for preparing the parameter value of battery management system; In addition; in the operating state process of lithium battery group 2000, (for example there is alarm situation; total voltage overvoltage, total voltage is under-voltage announcement, cell is under-voltage, cell overvoltage, charging and discharging circuit short circuit, charging overcurrent, excess temperature, low temperature, capacity are too low, battery pack error-polarity connection, temperature collecting cell lost efficacy, balanced inefficacy) time; main control unit 1100 is according to sending control signal to the analysis result of lithium battery group 2000 working conditions to protected location 1400, and 1400 pairs of starting protection unit lithium battery group 2000 is protected.
Wherein collecting unit 1200 preferably includes: voltage acquisition module 1210, current acquisition module 1220 and temperature collect module 1230, wherein,
Voltage acquisition module 1210, first end is connected with battery pack 2000, the second end is connected with described main control unit 1100, be used for gathering battery pack 2000 voltage signals and described voltage signal is transferred to described main control unit 1100, wherein said collection voltage signal comprises: battery pack global voltage and battery cell voltage; Main control unit 1100, the voltage status that judges battery pack 2000 by the voltage signal detecting (for example, between under-voltage, overvoltage, cell voltage difference surpass threshold value and or voltage in normal range (NR)), further according to magnitude of voltage, send control signal;
Current acquisition module 1220, first end is connected with described battery pack 2000, the second end is connected with described main control unit 1100, be used for gathering battery pack 2000 current signals and by described current signal transfer to main control unit 1100, wherein said current signal is charging and discharging circuit electric current, when charging and discharging circuit current anomaly, main control unit 1100 sends control signal starting protection unit battery pack 2000 is protected;
Temperature collect module 1230, first end is connected with described battery pack 2000, the second end is connected with described main control unit 1100, be used for gathering battery pack 2000 temperature signals and described temperature signal is transferred to described main control unit 1100, wherein said temperature signal comprises battery surface temperature, ambient temperature and plate level temperature.
Balanced unit 1300, is chosen as passive type or active according to concrete performance.Wherein, passive type is balanced for diminishing equilibrium, and energy unnecessary in battery cell is consumed; Active equilibrium is non-dissipative equalizing, and the electric energy that monomer energy is high shifts to the low cell of energy.Balanced unit 1300 receives the control signal of main control unit 1100 and according to control signal, battery pack 2000 is carried out to balanced management.
Described protected location 1400 comprises at least one of following mode: metal-oxide-semiconductor parallel way, relay mode and or contactor mode, according to the difference of battery capacity, select different execution modes to charging and discharging circuit carry out cut-out and or Closed control.
Show with Alarm Unit 1500 and preferably include: audible and visual alarm module 1510, LCD display module 1520 and capacity indicating module 1530, wherein,
Audible and visual alarm module 1510 is connected with described main control unit 1100, for receiving the control signal of main control unit and sending alarm, the detailed process of described audible and visual alarm module work is: 1100 pairs of data that receive from collecting unit 1200 of main control unit and the threshold value of setting compare, to the abnormal conditions that occur by audible and visual alarm module 1510(for example, buzzer and or indicator light) send corresponding alarm signal;
LCD display module 1520 is connected with described main control unit 1100, be used for the state parameter that receives the control signal of main control unit 1100 and show battery pack 2000, described state parameter comprises: the alarm threshold of monomer voltage, total voltage, ambient temperature, battery temperature, residual capacity, operating state (for example, running status, alarm status, guard mode), current signal, abnormality, protection threshold value and recovery threshold value; Described abnormality comprises: total voltage overvoltage, total voltage is under-voltage announcement, cell is under-voltage, cell overvoltage, charging and discharging circuit short circuit, charging overcurrent, excess temperature, low temperature, capacity are too low, battery pack error-polarity connection, temperature collecting cell lost efficacy, balanced inefficacy;
Capacity indicating module 1530 is connected with described main control unit 1100, be used for the state-of-charge (SOC) that receives the control signal of main control unit 1100 and show battery pack, specific implementation process is: main control unit 1100 carries out SOC estimation according to the data of obtaining from collecting unit 1200, and result is transferred in capacity indicating module 1530 and is shown.
Communication unit 1600 preferably includes: RS485 communication module 1610, RS232 communication module 1620 and/or ethernet communication module 1630, wherein,
The first end of RS485 communication module 1610 is connected with described main control unit 1100, the second end is connected to RS485 system bus, this system bus is connected a plurality of minor node lithium battery pack management systems 1000 with host node lithium battery management system 1000, thereby makes a plurality of lithium battery pack management systems 1000 carry out system cascade;
The first end of host node battery management system RS232 communication module 1620 is connected with described main control unit 1100, the second end is connected with host computer 3000, make this host computer 3000 can with RS485 cascade system in host node lithium battery management system 1000 communicate, and RS232 communication unit 1620 and RS485 communication unit 1610 by host node communicate with other minor node battery management systems 1000 in RS485 cascade network, concrete communication process is: host computer 3000 monitor terminals send instruction request to the battery management system 1000 of cascade, receive request battery management system 1000 main control unit 1100 by data (for example, system parameters, system mode, warning information) be transferred to host computer 3000 monitor terminals, system maintenance personnel can send a command to battery management system 1000 by host computer 3000 monitor terminals, main control unit 1100 resolve command of this battery management system 1000, and according to this order, lithium battery management system 1000 is carried out to parameter configuration and lithium battery group 2000 operating states are controlled, for example, revise battery parameter threshold value, revise alarm, protection and or balanced unit enable configuration,
The first end of ethernet communication module 1630 is connected with main control unit 1100, the second end is connected with host computer 3000, lithium battery management system 1000 and long-range host computer 3000 are communicated, detailed process is, long-range host computer 3000 by network (for example, intranet and | or the Internet) order is sent to lithium battery management system 1000, the main control unit 1100 of this lithium battery management system is resolved the order receiving, according to order, (for example carry out transfer of data, system parameters, system mode, battery pack parameter and or warning information), setting parameter, Alarm Unit enables configuration, protected location enable configuration and or balanced unit enable configuration.
Memory cell 1700 preferably includes: storage inside module 1710 and outer memory module 1720, wherein,
Main control unit 1100 is communicated by letter with described storage inside module 1710, and by data (for example, system parameters, system mode, battery pack parameter and or warning information) store in internal storage 1710;
External memory equipment 1720 is supported hot plug, External memory equipment 1720 for example, is connected with main control unit 1100 by interface (usb 1 110), main control unit 1100 will (for example be recorded in data in internal storage 1710, system parameters, system mode, battery pack parameter and or warning information) copy in external memory storage 1720 so that system operator conveniently obtains the data of described battery management system 1000.
Communication according to the present invention adopts high performance main control unit 1100 as core with lithium battery management system, first the data that provide by collecting unit 1200 are carried out system monitoring to the temperature in battery charge and discharge process, electric current and voltage, and to data analysis, transmission and storage, and the running status of the charged load of estimating battery (SOC) and judgement lithium battery group 2000; By the monomer battery voltage in 1300 pairs of battery pack 2000 of balanced unit, carry out equilibrium; and further protect by the battery in 1400 pairs of battery pack of protected location; when there are abnormal conditions (as: short circuit, under-voltage, overvoltage, excess temperature, low temperature or error-polarity connection etc.) in battery pack 2000 in charge and discharge process; disconnect charging and discharging circuit battery pack 2000 is protected, thus serviceability and the life-span of having improved battery pack 2000.Secondly, the present invention is also provided with communication unit 1600, demonstration and Alarm Unit 1500, by RS232 Serial technology, by the cascade of RS485 system, by ethernet communication unit 1630, connect Ethernet, by the abnormal conditions of battery pack 2000 (as: short circuit, under-voltage, overvoltage, excess temperature, low temperature or error-polarity connection etc.) are carried out to audible and visual alarm and screen display, thereby solved scene and the remote monitoring problem of communication with lithium battery management system 1000.In addition, the present invention is also provided with memory cell 1700, by the data stored record to battery pack 2000 running parameters and alarm situation, to facilitate staff that battery pack 2000 is safeguarded and battery performance is further studied.Based on optional many factors, according to battery management system of the present invention, can design various embodiments, so specific embodiment is only as the exemplary explanation of specific implementation of the present invention, and is not construed as limiting the invention.
Embodiment
The present invention proposes a kind of lithium battery management system 1000 for communication, comprising: main control unit 1100, collecting unit 1200, balanced unit 1300, protected location 1400, display alarm unit 1500, communication unit 1600 and memory cell 1700.Main control unit 1100, for receiving battery pack Monitoring Data, is analyzed data, and transmission data, send instruction, receive instruction.The first end of collecting unit 1200 is connected with battery pack 2000, and the second end is connected with described main control unit 1100, for gathering the signal of described battery pack 2000 and the signal of described collection being transferred to described main control unit 1100; The first end of balanced unit 1300 is connected with main control unit 1100, and the second end is connected with battery pack 2000, for receiving control signal that main control unit 1100 sends and according to described control signal balancing battery group 2000; The first end of protected location 1400 is connected with battery pack 2000, and the second end is connected with described main control unit 1100, for receiving control signal that main control unit 1100 sends and according to described control signal protection battery pack 2000; Display alarm unit 1500 is connected with described main control unit 1100, for showing the operating state of battery pack 2000 and sending alarm signal; Described communication unit 1600 is connected with described main control unit 1100, and host computer 3000 and described main control unit 1100 are communicated; Memory cell 1700 is connected with described main control unit 1100, the data that send for receiving and store described main control unit 1100.
Wherein, the control core that main control unit 1100 is battery management system, preferred STM32F107 chip, these main control unit 1100 major functions comprise: receive the battery pack Monitoring Data gathering, analyze data, transmission data, transmission instruction, receives instruction.
Main control unit 1100 sends the port that instruction real-time query collecting unit 1200 is connected with this main control unit 1100, obtains the working status parameter that collecting unit 1200 is transferred to the battery pack 2000 of described port; 1100 pairs of data that obtain of main control unit are processed, and by initial data and analysis result send to show with Alarm Unit 1500 carry out demonstration and or alarm; And, main control unit 1100 passes through communication unit 1600 to host computer 3000 real-time Transmission fetched datas, in the administrative terminal system of host computer 3000, show, and the data of obtaining to memory cell 1700 transmission, described memory cell 1700 is the data of interocclusal record battery pack on time; Main control unit 1100, by analyzing the battery pack data of obtaining, when needs carry out balanced management to battery pack, transmits control signal to balanced unit 1300, starts 1300 pairs of battery pack of balanced control unit and carries out inner equilibrium control; Host computer 3000 can send order to main control unit 1100, for preparing the parameter value of battery management system 1000; In addition; in the operating state process of lithium battery group, (for example there is alarm situation; total voltage overvoltage, total voltage is under-voltage announcement, cell is under-voltage, cell overvoltage, charging and discharging circuit short circuit, charging overcurrent, excess temperature, low temperature, capacity are too low, battery pack error-polarity connection, temperature collecting cell lost efficacy, balanced inefficacy) time; main control unit 1100 is according to sending control signal to the analysis result of lithium battery group working condition to protected location 1400, and 1400 pairs of starting protection unit lithium battery group 2000 is protected.
Balanced unit 1300, is chosen as passive type or active according to concrete performance.Wherein, passive type is balanced for diminishing equilibrium, energy unnecessary in battery cell is consumed, specific implementation process is: each joint cell shunt resistance in parallel in lithium battery group 1000, when battery cell cell voltage and the minimum battery cell pressure reduction of voltage surpass setting threshold, main control unit 1100 sends control signal to balanced control unit 1300, this balanced unit 1300 discharges to the too high cell of monomer voltage according to control signal, so that the voltage that in this battery cell and battery pack, other cells are consistent; Active equilibrium is non-dissipative equalizing, the electric energy that monomer energy is high shifts to the low cell of energy, specific implementation process is: balanced unit 1300 makes the battery cell that monomer voltage is high charge to the low battery cell of voltage according to the control signal of main control unit 1100 by equalizing circuit, to realize the transfer type equilibrium of energy.Balanced unit 1300 receives the control signal of main control unit 1100 and according to control signal, battery pack 2000 is carried out to balanced management, to improve useful life and the serviceability of battery.
Described protected location 1400 comprises at least one of following mode: metal-oxide-semiconductor parallel way, relay mode and or contactor mode, according to the difference of battery capacity, select different execution modes to charging and discharging circuit carry out cut-out and or Closed control.The battery pack little to total capacity (for example, rated capacity is below 100AH), the mode of employing MOS parallel connection; The battery pack that total capacity is large (for example, rated capacity surpasses 100AH), adopts relay or contactor.These protected location 1400 specific works processes: while discharging and recharging, the Data Detection that main control unit transmits by collecting unit 1200 collections to abnormal conditions (for example, total voltage is higher than protection threshold value, monomer voltage is higher than protection threshold value, charge circuit is short-circuited, charging current surpasses protection threshold value, battery excess temperature, battery low temperature, cell is under-voltage, total electric weight is lower than power threshold, battery pack error-polarity connection, balanced inefficacy and temperature sensor fails) time, transmit control signal starting protection unit 1400, by open circuit, guarantee the use safety of battery pack 2000, and alarm signal is shown and alarm, wait for that attendant safeguards the battery pack 2000 of the abnormal conditions that occur, so that battery pack 2000 returns to normal operating conditions.
According to the collecting unit 1200 of the lithium battery management system of the present invention shown in Fig. 2, can find out that collecting unit 1200 comprises: voltage acquisition module 1210, first end is connected with battery pack 2000, the second end is connected with main control unit 1100, for gathering the data of battery pack 2000, these data comprise battery pack 2000 global voltage and battery cell voltage; Main control unit 1100, the voltage status that judges battery pack 2000 by the voltage signal detecting (for example, between under-voltage, overvoltage, cell voltage difference surpass threshold value and or voltage in normal range (NR)), further according to this voltage status, send control signal; Current acquisition module 1220, first end is connected with main control unit 1100, the second end is connected with battery pack 2000, be used for gathering battery pack 2000 current signals and by described current signal transfer to main control unit 1100, wherein, current signal is charging and discharging circuit electric current, at charging and discharging circuit electric current, occurs when abnormal, and main control unit 1100 sends 1400 pairs of control signal starting protection unit battery pack and protects; Temperature collect module 1230, be preferably temperature sensor, first end is connected with described battery pack 2000, the second end is connected with described main control unit 1100, be used for gathering battery pack 2000 temperature signals and described temperature signal is transferred to described main control unit 1100, temperature signal comprises battery surface temperature, ambient temperature and plate level temperature.
According to the demonstration of the battery management system of the present invention shown in Fig. 3 and Alarm Unit 1500, preferably include: audible and visual alarm module 1510, LCD display module 1520 and capacity indicating module 1530, wherein,
Audible and visual alarm module 1510 is connected with described main control unit 1100, for receiving the control signal of main control unit 1100 and sending alarm, the detailed process of audible and visual alarm module 1510 work is: 1100 pairs of data that receive from collecting unit 1200 of main control unit and the threshold value of setting compare, to the abnormal conditions that occur by audible and visual alarm module 1510(for example, buzzer and or indicator light) send corresponding alarm signal.
LCD display module 1520 is connected with described main control unit 1100; be used for the state parameter that receives the control signal of main control unit 1100 and show battery pack 2000; described state parameter comprises: the alarm threshold of monomer voltage, total voltage, ambient temperature, battery temperature, residual capacity, operating state (for example, operation, alarm, protection), current signal, abnormality, protection threshold value and recovery threshold value.Wherein, abnormality comprises: total voltage overvoltage, total voltage is under-voltage, cell is under-voltage, cell overvoltage, charging and discharging circuit short circuit, charging overcurrent, excess temperature, low temperature, capacity are too low, battery pack error-polarity connection, temperature collecting cell lost efficacy, balanced inefficacy;
Capacity indicating module 1530 is connected with described main control unit 1100, be used for the state-of-charge (SOC) that receives the control signal of main control unit 1100 and show battery pack, specific implementation process is: main control unit 1100 carries out SOC estimation according to the data of obtaining from collecting unit 1200, and result is transferred in capacity indicating module 1530 and is shown.
According to the communication unit 1600 of the lithium battery management system of the present invention 1000 shown in Fig. 4, comprise: RS485 communication module 1610, RS232 communication module 1620 and/or ethernet communication module 1630, wherein,
The first end of the described RS485 communication module 1610 of the lithium battery management system of the present invention shown in Fig. 5 is connected with described main control unit 1100, the second end is connected to RS485 system bus, this system bus by a plurality of minor nodes (for example, 15 minor nodes) batteries management system 1000 is connected with host node battery management system 1000 is star-like, thereby makes a plurality of batteries management systems 1000 carry out system cascade, the first end of host node battery management system RS232 communication module 1620 is connected with described main control unit 1100, the second end is connected with host computer 3000, make described host computer 3000 can with RS485 cascade system in host node battery management system 1000 communicate, and RS232 communication unit 1620 and RS485 communication unit 1610 by host node communicate with other minor node lithium battery management systems 1000 in RS485 cascade network, concrete communication process is: host computer 3000 monitor terminals send instructions to the lithium battery management system 1000 of cascade, receive request battery management system 1000 main control unit 1100 by data (for example, system parameters, system mode, warning information) be transferred to host computer 3000 monitor terminals, system maintenance personnel can send a command to battery management system 1000 by host computer 3000 monitor terminals, main control unit 1100 resolve command of this battery management system 1000, and according to this order, battery pack 2000 is controlled, for example, revise battery parameter threshold value, revise alarm, protection and or balanced unit 1300 enable configuration,
The described ethernet communication module 1630 of the lithium battery management system of the present invention 1000 shown in Fig. 6, this communication module is for for example comprising ethernet PHY controller 1631(, DP83848 controller) and communication interface 1632(for example, RJ45 interface module) this ethernet PHY controller first end by MII interface 1120 and main control chip (for example, STM32F107) connect, the second end is connected to Ethernet by communication interface 1632;
The described ethernet communication module 1630 of the lithium battery management system of the present invention 1000 shown in Fig. 7, first end is connected with main control unit 1100, the second end (is for example connected into network by the network switch 5000, intranet and or the Internet 4000), lithium battery management system 1000 and the long-range host computer 3000 in network are communicated, detailed process is, long-range host computer 3000 by network (for example, intranet and or the Internet 4000) order is sent to battery management system 1000, the main control unit 1100 of this battery management system 1000 is resolved the order receiving, according to order, (for example carry out transfer of data, system parameters, system mode, battery pack parameter and or warning information), setting parameter, Alarm Unit enables configuration, protected location enable configuration and or balanced unit enable configuration.
According to the memory cell 1700 of the lithium battery management system of the present invention shown in Fig. 8, preferably include: storage inside module 1710 and outer memory module 1720, wherein,
Described main control unit 1100 is communicated by letter with described storage inside module 1710, and by data (for example, system parameters, system mode, battery pack parameter and or warning information) store in internal storage 1710;
External memory equipment 1720 is supported hot plug, so that system operator conveniently obtains the data of described battery management system 1000, External memory equipment 1720 passes through for example USB interface of interface 1110() be connected with main control unit 1100, main control unit 1100 will (for example be recorded in data in internal storage 1710, system parameters, system mode, battery pack parameter and or warning information) copy in external memory storage 1720 so that system operator conveniently obtains the data of lithium battery management system 1000.
It should be noted, the present invention will be described rather than limit the invention for above-described embodiment, and those skilled in the art can design alternative embodiment in the situation that not departing from claims scope.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed as element or step in the claims.

Claims (8)

1. a lithium battery management system for communication (1000), comprising:
Main control unit (1100), for receiving battery pack Monitoring Data, analyzes data, transmission data, send instruction and or receive instruction;
Collecting unit (1200), the first end of described collecting unit (1200) is connected with battery pack (2000), the second end is connected with described main control unit (1100), for gathering the signal of described battery pack (2000) and the signal of collection being transferred to described main control unit (1100);
Balanced unit (1300), the first end of described balanced unit (1300) is connected with described main control unit (1100), the second end is connected with battery pack (2000), for receiving control signal that main control unit (1100) sends and according to control signal balancing battery group (2000);
Protected location (1400), the first end of described protected location (1400) is connected with described main control unit (1100), the second end is connected with battery pack (2000), for receiving control signal that described main control unit (1100) sends and according to control signal protection battery pack (2000);
Show and Alarm Unit (1500), described demonstration is connected with described main control unit (1100) with Alarm Unit (1500), for showing the operating state of battery pack (2000) and sending alarm signal;
Communication unit (1600), the first end of described communication unit (1600) is connected with described main control unit (1100), the second end is connected with host computer (3000), for the data of transmitting described main control unit (1100) to host computer (3000) transfer of data that host computer (3000) is sent to described main control unit (1100);
Memory cell (1700), described memory cell (1700) is connected and communicates with described main control unit (1100), for reception, storage and or conveying data.
2. lithium battery management system (1000) for communication according to claim 1, is characterized in that: described main control unit (1100) is STM32 chip.
3. lithium battery management system (1000) for communication according to claim 1, it is characterized in that described collecting unit (1200) further comprises: voltage acquisition module (1210), current acquisition module (1220) and temperature collect module (1230), wherein
The first end of described voltage acquisition module (1210) is connected with described battery pack (1220), the second end is connected with described main control unit (1100), for gathering battery pack (2000) voltage signal and voltage signal being transferred to described main control unit (1100);
The first end of described current acquisition module (1220) is connected with described battery pack (2000), the second end is connected with described main control unit (1100), for gather battery pack (2000) current signal and by current signal transfer to described main control unit (1100);
The first end of described temperature collect module (1230) is connected with described battery pack (2000), the second end is connected with described main control unit (1100), for gathering battery pack (2000) temperature signal and temperature signal being transferred to described main control unit (1100).
4. communicate by letter with lithium battery management system (1000) according to claim 1, it is characterized in that, described balanced unit (1300) is passive type balanced unit or active balanced unit.
5. communication with lithium battery management system (1000), is characterized in that according to claim 1, and the mode that described protected location (1400) adopts comprises: metal-oxide-semiconductor parallel way, relay mode and or contactor mode.
6. communicate by letter according to claim 1 with lithium battery management system (1000), it is characterized in that described demonstration and Alarm Unit (1500) further comprise: capacity indicating module (1530), LCD display module (1520) and acousto-optic alarm module (1510), wherein
Described capacity indicating module (1530) is connected with described main control unit (1100), for receiving the control signal of described main control unit (1100) and showing the state-of-charge of battery pack (2000);
Described LCD display module (1520) is connected with described main control unit (1100), for receiving the control signal of described main control unit (1100) and showing the state parameter of battery pack (2000);
Described audible and visual alarm module (1510) is connected with described main control unit (1100), for receiving the control signal of described main control unit (1100) and sending alarm.
7. communicate by letter with lithium battery management system (1000) according to claim 1, it is characterized in that described communication unit (1600) further comprises: RS485 communication module (1610), RS232 communication module (1620) and/or ethernet communication module (1630).
8. communicate by letter with lithium battery management system (1000) according to claim 1, it is characterized in that described memory cell (1700) further comprises storage inside module (1710) and outer memory module (1720), wherein,
Described main control unit (1100) is communicated by letter with described storage inside module (1710), and by data store into described storage inside module (1710) neutralization or from this memory module (1710) reading out data;
Described outer memory module (1720) is supported hot plug, and this memory module (1720) communicates with main control unit (1100) or host computer (3000), for store data and or data are provided.
CN201320614264.7U 2013-09-30 2013-09-30 Lithium battery management system used for communication Expired - Fee Related CN203481890U (en)

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CN104656032A (en) * 2015-03-17 2015-05-27 福建师范大学 Device for achieving monitoring of distributive lithium ion storage battery pack by adopting wireless network
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CN104505812A (en) * 2014-12-03 2015-04-08 中国联合网络通信集团有限公司 Lithium iron phosphate battery safety protection device and method
CN104656031A (en) * 2015-02-10 2015-05-27 福建师范大学 Device for monitoring distributed type lithium ion storage battery pack by using wireless network
CN104656032A (en) * 2015-03-17 2015-05-27 福建师范大学 Device for achieving monitoring of distributive lithium ion storage battery pack by adopting wireless network
CN105098219A (en) * 2015-06-24 2015-11-25 杭州信控科技有限公司 Portable universal battery standard module for electric vehicle
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CN109638369A (en) * 2018-12-26 2019-04-16 无锡锐祺通讯技术有限公司 Battery pack, control panel arrangement and working method with integrated BMS control panel
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CN109818090A (en) * 2019-01-22 2019-05-28 合肥中科昂辉科技有限公司 A kind of high-efficiency battery dynamic monitoring management system
CN110658465A (en) * 2019-11-01 2020-01-07 四川长虹电器股份有限公司 Cadmium-nickel battery management system
CN110764006A (en) * 2019-12-30 2020-02-07 杭州华塑加达网络科技有限公司 Battery management system
CN110764006B (en) * 2019-12-30 2020-10-27 杭州华塑加达网络科技有限公司 Battery management system
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