CN106208230A - A kind of battery management system of band charging stage current-limiting function - Google Patents
A kind of battery management system of band charging stage current-limiting function Download PDFInfo
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- CN106208230A CN106208230A CN201610671113.3A CN201610671113A CN106208230A CN 106208230 A CN106208230 A CN 106208230A CN 201610671113 A CN201610671113 A CN 201610671113A CN 106208230 A CN106208230 A CN 106208230A
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- 238000007600 charging Methods 0.000 title claims abstract description 66
- 238000012544 monitoring process Methods 0.000 claims abstract description 62
- 238000007599 discharging Methods 0.000 claims abstract description 21
- 238000004880 explosion Methods 0.000 claims abstract description 5
- 239000004065 semiconductor Substances 0.000 claims description 15
- 238000004146 energy storage Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 12
- 230000010354 integration Effects 0.000 claims description 9
- 230000004224 protection Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 2
- 238000010277 constant-current charging Methods 0.000 claims 1
- 230000006866 deterioration Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 238000002955 isolation Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 230000005059 dormancy Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H02J2007/0067—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention provides the battery management system of a kind of band charging stage current-limiting function, including: main control module, temperature detecting module, analog front-end module, switch power controller, current limliting module.Wherein, analog front-end module includes the voltage monitoring unit for monitoring cell voltage, for monitoring the charging and discharging currents monitoring means of battery charging and discharging electric current, for monitoring the short circuit current monitoring means of battery charging and discharging short circuit.Main control module sends corresponding control information to switch power controller according to the monitoring information of described voltage monitoring unit with the monitoring information of charging and discharging currents monitoring means, switch power controller controls current limliting module according to the information of control, thus realizes controlling the charging current of battery.The present invention is capable of battery and is charged with difference charging constant current in the different charging stages, effectively prevents short circuit and crosses stream and cause on fire, explosion accident, and crossing deterioration of battery and the damage that stream heating causes.
Description
Technical field
The present invention relates to battery management system technology, particularly relate to the battery management system of a kind of band charging stage current-limiting function
System.
Background technology
Lithium iron phosphate dynamic battery, because its service life cycle length, security performance are good, low cost and other advantages, becomes energy storage dress
The ideal power source put.Under countries in the world scientific research institution makes joint efforts, lithium dynamical battery technology obtains fast development, the most several
Nian Zhong, the market sales volume of lithium dynamical battery becomes rapid growth, and the field applying lithium dynamical battery most is electric automobile neck
Territory.Higher because of its dynamic performance requirements due to electric automobile, battery capacity drop to after 80% with regard to be replaced fall, therefore may be used
To imagine that the second-hand lithium dynamical battery number replaced the coming years will be the hugest, how processing these batteries is various countries
Government has to the problem faced.Use environment preferable, to energy due to energy storage device particularly communication base station back-up source because of it
Amount ratio is less demanding, and installing space relative loose is well suited with one's place just.
Battery management system mainly aims at the utilization rate that can improve battery, prevents battery from occurring overcharging and mistake
Degree electric discharge, extends the service life of battery, the state of monitoring battery.Along with the development of battery management system, battery management system
Function compare and more they tend in early days perfect, accuracy of detection and reliability aspect are greatly enhanced, especially base station lithium power storage
Can battery management system.But, current base station lithium power energy storage battery management system the most not band charging stage current-limiting function.
Summary of the invention
For solving the deficiencies in the prior art, the present invention provides the battery management system of a kind of band charging stage current-limiting function.
The technical solution adopted for the present invention to solve the technical problems is: the cell tube of a kind of band charging stage current-limiting function
Reason system, including:
Main control module, temperature detecting module, analog front-end module, switch power controller, current limliting module.Wherein, AFE (analog front end)
Module includes the voltage monitoring unit for monitoring cell voltage, for monitoring the charging and discharging currents monitoring of battery charging and discharging electric current
Unit, for monitor battery charging and discharging short circuit short circuit current monitoring means.Temperature detecting module is for detecting the temperature of battery
And the temperature of environment.Current limliting module is for limiting the charging current of battery.Main control module is according to described voltage monitoring list
The corresponding information that controls of monitoring information and the monitoring information of charging and discharging currents monitoring means transmission of unit to switch power controller,
Switch power controller controls current limliting module according to the information of control, thus realizes controlling the charging current of battery.
Further, described current limliting module include detect resistance, energy storage inductor, metal-oxide-semiconductor, metal-oxide-semiconductor driving, PWM controller,
First isolator, the second isolator, amplifier, precision resistance, divider resistance.The negative pole of battery divides two-way, wherein a road successively with
Ground connection after detection resistance, energy storage inductor, metal-oxide-semiconductor connection, another road connects the inverting input of amplifier；The outfan of amplifier is successively
Drive with the first isolator, PWM controller, metal-oxide-semiconductor, metal-oxide-semiconductor is connected；Reference voltage, the other end are accessed in one end of precision resistance
Ground connection after being connected with divider resistance；The input of the second isolator accesses signal terminal A and signal terminal B, the second isolator
Outfan is connected with the two ends of divider resistance；Precision resistance is connected the in-phase input end of amplifier with the node of divider resistance；Inspection
Measuring resistance and the node ground connection of energy storage inductor.
Further, described main control module is single with charging and discharging currents monitoring according to the monitoring information of described voltage monitoring unit
The monitoring information of unit sends the corresponding information that controls and controls according to the information of control to switch power controller, switch power controller
Current limliting module, thus realize controlling the charging current of battery, if particularly as follows: minimum single battery voltage is less than 3.0V,
Then starting 15A charging current limiter, switch power controller adjusts PWM frequency, thus controls switching tube on or off and realize 15A perseverance
Current charge；If minimum single battery voltage reaches 3.2V, then starting 10A charging current limiter, switch power controller adjusts PWM frequency
Rate, thus control switching tube on or off and realize 10A constant-current charge；If certain batteries voltage is charged to 3.5V, then start 5A
Current-limiting charge, switch power controller adjusts PWM frequency, thus controls switching tube on or off and realize 5A constant-current charge.
Further, described main control module is additionally operable to receive the monitoring information of short circuit current monitoring means, if battery
Charging current is more than preset value, then be judged as short circuit, and directly terminate charging, prevent short circuit from causing on fire, explosion accident.This
Outward, described main control module is additionally operable to receive the temperature detection information of temperature detecting module, and according to temperature detection information to electricity
The charging current in pond is adjusted, thus realizes temperature regulation, effectively realizes the protection of battery high/low temperature.
Further, this battery management system uses constant-current charge coulometer integration and Δ Q/ Δ V extreme value revised law to electricity
Pond state-of-charge SOC estimates.
Further, described main control module is 32 high-speed low-power-consumption ARM chips.Before described analog front-end module is for simulation
End ML5238 chip.
The beneficial effect of the base station lithium power energy storage battery management system of band charging stage current-limiting function of the present invention has:
Main control module uses 32 high-speed low-power-consumption ARM chips, AFE (analog front end) ML5238 chip, and uses Switching Power Supply constant current
Principle is aided with master chip control, it is possible to realizes battery and is charged with difference charging constant current in the different charging stages, effectively prevents
Short circuit and cross stream and cause on fire, explosion accident, and cross deterioration of battery and damage that stream heating causes.
Accompanying drawing explanation
Fig. 1 is the structural representation of the battery management system of band charging stage current-limiting function of the present invention；
Fig. 2 is the circuit theory diagrams of the battery management system current limliting module of band charging stage current-limiting function of the present invention；
In figure: 1 be main control module, 2 be temperature detecting module, 3 be analog front-end module, 4 be switch power controller, 5 be limited
Flow module, 31 be voltage monitoring unit, 32 be charging and discharging currents monitoring means, 33 for short circuit current monitoring means.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
As it is shown in figure 1, the battery management system of band charging stage current-limiting function includes main control module 1, temperature detecting module
2, analog front-end module 3, switch power controller 4, current limliting module 5.Wherein, analog front-end module 3 includes for monitoring battery
The voltage monitoring unit 31 of voltage, for monitoring the charging and discharging currents monitoring means 32 of battery charging and discharging electric current, for monitoring electricity
The short circuit current monitoring means 33 of pond discharge and recharge short circuit.Main control module 1 is 32 high-speed low-power-consumption ARM chips, AFE (analog front end) mould
Block 3 is AFE (analog front end) ML5238 chip, and switch power controller 4 uses TL494, and scheme is succinctly efficient, and superiority of effectiveness is obvious.
Temperature detecting module 2 is for detecting the temperature of battery and the temperature of environment, and sends detection information to main
Control module 1.By 6 road temperature probes, monitor the temperature of battery core, environment, power respectively, different protection value is set by host computer
And time delay, ARM passes through respective algorithms, and decision-making performs respective action.Described battery core is that 4 roads are distributed.
Cell voltage is monitored by voltage monitoring unit 31, sends monitoring information to main control module 1 in real time.In like manner,
Battery charging and discharging electric current is detected by charging and discharging currents monitoring means 32, sends the information monitored to main control module in real time
1.Short circuit during battery charging and discharging is monitored by short circuit current monitoring means 33, and sends monitoring information to master control mould in real time
Block 1.By to voltage, electric current, the monitoring of temperature these three physical quantity, analyze battery status in real time, perform overvoltage, excess temperature, mistake
Stream and short-circuit protection, it is achieved charge-discharge energy and balanced management.
As in figure 2 it is shown, current limliting module 5 include detecting resistance, energy storage inductor, metal-oxide-semiconductor, metal-oxide-semiconductor driving, PWM controller, the
One isolator, the second isolator, amplifier, precision resistance, divider resistance.The negative pole of battery divides two-way, wherein a road successively with inspection
Ground connection after the connection of measuring resistance, energy storage inductor, metal-oxide-semiconductor, another road connects the inverting input of amplifier；The outfan of amplifier successively with
First isolator, PWM controller, metal-oxide-semiconductor drive, metal-oxide-semiconductor connects；Reference voltage is accessed in one end of precision resistance, the other end with
Ground connection after divider resistance connection；The input of the second isolator accesses signal terminal A and signal terminal B, the second isolator defeated
Go out end to be connected with the two ends of divider resistance；Precision resistance is connected the in-phase input end of amplifier with the node of divider resistance；Detection
Resistance and the node ground connection of energy storage inductor.
Control principle is two-way control, A road low level, and light-coupled isolation exports, and controls to access divider resistance, exports PWM1 arteries and veins
Bandwidth signals, drives MOS switch to realize 5A constant-current charge.In A road low level simultaneously, B road low level, isolation and amplifier, control to be incorporated to
Divider resistance, exports PWM2 pulse width signal, drives MOS switch to realize 10A constant-current charge.Described signal terminal A input is A road
Low level, signal terminal B input is B road low level.
The main control module 1 monitoring information according to described voltage monitoring unit 31 and the monitoring of charging and discharging currents monitoring means 32
Information sends the corresponding information that controls and controls current limliting mould to switch power controller 4, switch power controller 4 according to the information of control
Block 5, thus realize controlling the charging current of battery.If particularly as follows: minimum single battery voltage is less than 3.0V, then started
15A charging current limiter, i.e. A road sets low level isolation and amplifier, and switch power controller 4 adjusts PWM frequency, thus controls switching tube and lead
Logical or cut-off realizes 15A constant-current charge；If minimum single battery voltage reaches 3.2V, then start 10A charging current limiter, i.e. A road and B
Road equal isolation and amplifier low level, switch power controller 4 adjusts PWM frequency, thus controls switching tube on or off and realize 10A
Constant-current charge；If certain batteries voltage is charged to 3.5V, then starting 5A current-limiting charge, now B road sets high, only A road isolation and amplifier
Low level, switch power controller 4 adjusts PWM frequency, thus controls switching tube on or off and realize 5A constant-current charge.
Main control module 1 is additionally operable to receive the monitoring information of short circuit current monitoring means 33, if the charging current of battery is big
In preset value, then it is judged as short circuit, and directly terminates charging, prevent short circuit from causing on fire, explosion accident.Additionally, master control mould
Block 1 is additionally operable to receive the temperature detection information of temperature detecting module 2, and according to the temperature detection information charging current to battery
Size is adjusted, thus realizes temperature regulation, effectively realizes the protection of battery high/low temperature.
This battery management system uses constant-current charge coulometer integration and Δ Q/ Δ V extreme value revised law to battery charge state
SOC estimates.Everybody SOC estimates the way that commonly used coulometer integration and open-circuit voltage combine in the industry.LiFePO4 electricity
Flattening bench ratio is relatively low, relatively flat, so open-circuit voltage cannot be accomplished accurately in the middle of charging and discharging curve.Owing to electric current is dynamic
, there is error in coulometer integration, increases over time cumulative errors increasing, so using coulometer integration also inevitable
Meeting error is increasing.This battery management system Charge Management uses current constant mode, itself has eliminated coulometer integration mistake
The dynamic of electric current in journey, removes battery from power consumption, polarizing voltage and internal resistance changing factor, the essence of basic guarantee coulometer integration
Degree.After battery bag coupling is completed, being discharged, complete a constant current current-limiting charge self study process, ARM obtains Δ Q/ Δ
V extreme point, coulometer integration obtains extreme point SOC and FCC, and SOC/FCC obtains Δ Q/ Δ V extreme point capacity percentage, deposits
Store up its SOC and percentage ratio.According to Δ Q/ Δ V extreme point SOC accounting, extreme point SOC value and completely fill capacity FCC and carry out self adaptation tune
Whole SOC.
ARM of the present invention is provided with three-level protective parameter, i.e. I level crosses stream, crosses for II grade and flows and three grades of overcurrent protections of short circuit, II grade
Cross stream and short circuit II grade is crossed stream and arranged protective current and delay time by upper computer software, it may be said that be perfectly safe.Short-circuit protection
Being arranged protective current parameter by ARM, hardware setting time delay, hardware protection is quick and precisely timely, is prevented effectively from fire and blast
Occur, avoid the risk that the short-circuit protection action of pure software functional realiey was lost efficacy because of interference completely.
This battery management system can realize 2 grades of dormancy: is still without discharge and recharge after standby 3 minutes, then enters I without communications status
Level dormancy；More than 500 microampere of electric current, communication and discharge and recharge can activate；Cross prevention is without under charge condition, and BMS system and battery core are certainly
Power consumption can allow cell voltage reduce further, if be reduced to dormancy voltage, system enters deep-sleep.During deep-sleep,
About 1 microampere of electric current, is substantially reduced BMS system from power consumption, significantly postpones battery standby time.
Claims (8)
1. the battery management system of a band charging stage current-limiting function, it is characterised in that including:
Main control module (1), temperature detecting module (2), analog front-end module (3), switch power controller (4), current limliting module
(5)；
Wherein, analog front-end module (3) includes the voltage monitoring unit (31) for monitoring cell voltage, is used for monitoring battery and fills
The charging and discharging currents monitoring means (32) of discharge current, for monitoring the short circuit current monitoring means of battery charging and discharging short circuit
(33)；
Temperature detecting module (2) is for detecting the temperature of battery and the temperature of environment；
Current limliting module (5) is for limiting the charging current of battery；
The main control module (1) the monitoring information according to described voltage monitoring unit (31) and the prison of charging and discharging currents monitoring means (32)
Control information sends the corresponding information that controls and controls according to the information of control to switch power controller (4), switch power controller (4)
Current limliting module (5), thus realize controlling the charging current of battery.
The battery management system of band charging stage current-limiting function the most according to claim 1, it is characterised in that described current limliting
Module (5) include detect resistance, energy storage inductor, metal-oxide-semiconductor, metal-oxide-semiconductor driving, PWM controller, the first isolator, the second isolator,
Amplifier, precision resistance, divider resistance；The negative pole of battery divides two-way, wherein a road successively with detection resistance, energy storage inductor, metal-oxide-semiconductor
Ground connection after connection, another road connects the inverting input of amplifier；The outfan of amplifier successively with the first isolator, PWM controller,
Metal-oxide-semiconductor drives, metal-oxide-semiconductor connects；Reference voltage is accessed in one end of precision resistance, the other end be connected with divider resistance after ground connection；The
The input of two isolators accesses signal terminal A and signal terminal B, the two ends phase of the outfan of the second isolator and divider resistance
Connect；Precision resistance is connected the in-phase input end of amplifier with the node of divider resistance；Detection resistance connects with the node of energy storage inductor
Ground.
The battery management system of band charging stage current-limiting function the most according to claim 1, it is characterised in that described master control
Module (1) is sent out with the monitoring information of charging and discharging currents monitoring means (32) according to the monitoring information of described voltage monitoring unit (31)
Corresponding control information is sent to control current limliting module to switch power controller (4), switch power controller (4) according to the information of control
(5), thus realize controlling the charging current of battery, if particularly as follows: minimum single battery voltage is less than 3.0V, then started
15A charging current limiter, switch power controller (4) adjusts PWM frequency, thus controls switching tube on or off and realize 15A constant current
Charging；If minimum single battery voltage reaches 3.2V, then starting 10A charging current limiter, switch power controller (4) adjusts PWM frequency
Rate, thus control switching tube on or off and realize 10A constant-current charge；If certain batteries voltage is charged to 3.5V, then start 5A
Current-limiting charge, switch power controller (4) adjusts PWM frequency, thus controls switching tube on or off and realize 5A constant-current charge.
The battery management system of band charging stage current-limiting function the most according to claim 1, it is characterised in that described master control
Module (1) is additionally operable to receive the monitoring information of short circuit current monitoring means (33), if the charging current of battery is more than preset value,
Then it is judged as short circuit, and directly terminates charging, prevent short circuit from causing on fire, explosion accident.
The battery management system of band charging stage current-limiting function the most according to claim 1, it is characterised in that described master control
Module (1) is additionally operable to receive the temperature detection information of temperature detecting module (2), and fills battery according to temperature detection information
Electricity size of current is adjusted, thus realizes temperature regulation, effectively realizes the protection of battery high/low temperature.
The battery management system of band charging stage current-limiting function the most according to claim 1, it is characterised in that this cell tube
Reason system uses constant-current charge coulometer integration and Δ Q/ Δ V extreme value revised law to estimate battery charge state SOC.
The battery management system of band charging stage current-limiting function the most according to claim 1, it is characterised in that described master control
Module (1) is 32 high-speed low-power-consumption ARM chips.
The battery management system of band charging stage current-limiting function the most according to claim 1, it is characterised in that described simulation
Front-end module (3) is AFE (analog front end) ML5238 chip.
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| CN201610671113.3A CN106208230A (en) | 2016-08-16 | 2016-08-16 | A kind of battery management system of band charging stage current-limiting function |
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| CN201610671113.3A CN106208230A (en) | 2016-08-16 | 2016-08-16 | A kind of battery management system of band charging stage current-limiting function |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945529A (en) * | 2017-05-09 | 2017-07-14 | 苏州载物强劲新材料科技有限公司 | A kind of inexpensive power train in vehicle application li-ion cell protection system |
| CN107834642A (en) * | 2017-11-15 | 2018-03-23 | 中山市电赢科技有限公司 | A kind of energy-storage battery BMS distributed management systems |
| CN108336800A (en) * | 2018-04-23 | 2018-07-27 | 长沙优力电驱动***有限公司 | Charge-discharge control circuit and battery management system |
| TWI635689B (en) * | 2017-05-23 | 2018-09-11 | 圓展科技股份有限公司 | Charging control system and short-circuit current protecting method thereof |
| CN108819752A (en) * | 2018-06-22 | 2018-11-16 | 东莞钜威动力技术有限公司 | Battery management system |
| CN109149727A (en) * | 2018-11-05 | 2019-01-04 | 深圳市科润达电气技术有限公司 | A kind of current limiting system and method for battery management |
| CN109213032A (en) * | 2018-08-17 | 2019-01-15 | 湖北三好电子有限公司 | Equipment monitoring energy-saving control system |
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| US11923514B2 (en) | 2017-06-14 | 2024-03-05 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| US11916203B2 (en) | 2017-06-14 | 2024-02-27 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| US11777151B2 (en) | 2017-06-14 | 2023-10-03 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| US11031651B2 (en) | 2017-06-14 | 2021-06-08 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
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| CN110588423A (en) * | 2019-07-26 | 2019-12-20 | 安徽锐能科技有限公司 | Matching test method and system for BMS alternating current charging interface |
| CN112467815A (en) * | 2019-09-09 | 2021-03-09 | 宁波拓邦智能控制有限公司 | Control method and system for passive current limiting of battery management system |
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Application publication date: 20161207 |