CN101969218A - Intelligent charging method for pure electric automobile - Google Patents

Intelligent charging method for pure electric automobile Download PDF

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Publication number
CN101969218A
CN101969218A CN2010105250823A CN201010525082A CN101969218A CN 101969218 A CN101969218 A CN 101969218A CN 2010105250823 A CN2010105250823 A CN 2010105250823A CN 201010525082 A CN201010525082 A CN 201010525082A CN 101969218 A CN101969218 A CN 101969218A
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CN
China
Prior art keywords
charging
current
voltage
charge
electrokinetic cell
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Pending
Application number
CN2010105250823A
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Chinese (zh)
Inventor
袁昌荣
王明彦
刘太刚
苏琳珂
陈平
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Chongqing Changan Automobile Co Ltd
Chongqing Changan New Energy Automobile Co Ltd
Original Assignee
Chongqing Changan Automobile Co Ltd
Chongqing Changan New Energy Automobile Co Ltd
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Application filed by Chongqing Changan Automobile Co Ltd, Chongqing Changan New Energy Automobile Co Ltd filed Critical Chongqing Changan Automobile Co Ltd
Priority to CN2010105250823A priority Critical patent/CN101969218A/en
Publication of CN101969218A publication Critical patent/CN101969218A/en
Priority to PCT/CN2011/079086 priority patent/WO2012055294A1/en
Pending legal-status Critical Current

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    • 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
    • H01M10/44—Methods for charging or discharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/11—DC charging controlled by the charging station, e.g. mode 4
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses an intelligent charging system and an intelligent charging method for a pure electric automobile. In the intelligent charging system, for meeting the requirements of a vehicle-mounted power battery system of the pure electric automobile, a charging control strategy combining multi-section constant current charging, quick pulse current charging and constant-voltage charging is adopted, the automatic switching of a charging mode is realized, a charging state is judged automatically, and a charging process is stopped automatically. The intelligent charging system has the advantages that: the charging system is applicable to a plurality of power batteries, acquires battery information in real time, can acquire detailed information of a battery by communicating with a battery management system, is convenient to use, and has high charging speed and high running efficiency.

Description

A kind of pure electric automobile intelligent charging method
Technical field
The invention belongs to the charging batteries of electric automobile technical field, be specifically related to a kind of pure electric automobile intelligent charging method based on the high performance control chip.
Background technology
Entered since 21 century, energy-conservation and environmental protection becomes the focus of energy problem.Along with the high speed development of new century Domestic Automotive Industry, the recoverable amount of China's automobile also constantly increases.Automobile enters daily life in a large number, and the thing followed but is a serious environmental problem day by day.Therefore, we need expand environmental protection and the economized path that makes new advances to developing of automobile industry.The appearance of electric automobile then can solve this predicament preferably, especially pure electric automobile, there are not fuel oil problem and motor vehicle exhaust emission problem, so the research and development of electric automobile have been become the focus of the world today, country has dropped into a large amount of funds, domestic many colleges and universities, each big motor corporation has has also all researched and developed various types of electric automobiles.
At present, the development of electric automobile also exists many needs to solve and perfect problem, wherein just comprises electrokinetic cell and the research of charging method efficiently thereof.We know, electrokinetic cell is the core energy of electric automobile, but the charger function to the power accumulator charging is also more single at present, charging process still is long, the control assembly that also needs more external control intervention or even human intervention in the process of charging, serve for charger is also many, in charging process, have to use DC/DC or low pressure storage battery to be each control assembly power supply thus, thereby make DC/DC be operated in inefficient interval or waste low pressure storage battery energy.This has influenced energy service efficiency, the convenience of use and the reasonability of charging process inevitably, and the life-span that has influenced electrokinetic cell has to a certain extent also hindered popularizing and using of electric automobile.
Summary of the invention
In order to improve charge efficiency, reduce manual intervention or to realize that zero of charging process is intervened and the life-span of prolongation storage battery, the present invention proposes the quick, intelligent charge control method of multistage constant current charge.For the quick, intelligent charging control strategy of realizing and the present invention that achieves the above object has adopted the multistage constant current charge, rationed the power supply and press charging to combine, increased the battery information testing circuit simultaneously.
The present invention is specifically by the following technical solutions:
A kind of pure electric automobile intelligent charging method based on the intelligent charge system said method comprising the steps of:
A): charger starts, and at first powers to control acquisition module and battery information acquisition module by the low pressure output module, and simultaneously, the low-voltage output of charger begins to charge to low tension battery;
B): the control acquisition module receives the state information of the current electrokinetic cell to be charged of battery information acquisition module collection, selects charge mode according to current electrokinetic cell state information to be charged;
C): when the self-defined charge mode of needs, adopt the instruction charging modes, promptly the charging curve of setting according to battery management system charges to described electrokinetic cell;
D): when the automatic charge mode of needs, adopt multistage constant current charge mode that described electrokinetic cell is charged, promptly with the form of grading current to power battery charging.
The charging curve of described instruction charging modes is preferably:
Elder generation's constant current charge reaches capping voltage up to described power battery charging voltage, adopts constant voltage charge to be reduced to set point up to charging current then, adopts little current impulse charging constant up to charging voltage at last.
Described multistage constant current charge mode charging process further is preferably as follows:
First charging current of exporting a, charger adopts current constant mode that described electrokinetic cell is charged, and rises to first upper limit cut-ff voltage until the charging voltage of described electrokinetic cell;
Second charging current of exporting b, charger adopts current constant mode that described electrokinetic cell is charged, charging voltage until described electrokinetic cell rises to second upper limit cut-ff voltage, wherein said second charging current is less than described first charging current, and described second upper limit cut-ff voltage is greater than described first upper limit cut-ff voltage;
The 3rd charging current of exporting c, charger adopts current constant mode that described electrokinetic cell is charged, charging voltage until described electrokinetic cell rises to the 3rd upper limit cut-ff voltage, wherein said the 3rd charging current is less than described second charging current, and described the 3rd upper limit cut-ff voltage is greater than described second upper limit cut-ff voltage;
D, reduce charging current successively according to the mode of a-c, up to the charging current of charger output when setting minimum charge current, by this charging current described electrokinetic cell is carried out constant current charge, when described power battery charging voltage changes in half an hour when being no more than 1V, charger is charge closing machine automatically with regard to judging described electrokinetic cell to be full of.
In charging process of the present invention, charger is constantly surveyed active cell information, judges battery status voluntarily, thereby reduces low-voltage load and foreign intervention when removing stopping for charging from.Simultaneously, charging device has the low pressure fan-out capability, when giving power battery charging, also can be with and carry other a spot of low-voltage loads and to the low tension battery charging, reduce the time of DC/DC in the interval work of poor efficiency, thereby improve the service efficiency of energy.
Description of drawings
Fig. 1 is charger control logic figure of the present invention.
Fig. 2 is for implementing Chang'an of the present invention small-sized pure electric intelligent charging machine schematic block circuit diagram.
Embodiment
Also in conjunction with specific embodiments technical scheme of the present invention is described in further detail according to Figure of description below.
Be illustrated in figure 1 as the control logic figure of intelligent charging method charger of the present invention.
A kind of pure electric automobile intelligent charging method based on the intelligent charge system said method comprising the steps of:
A) charger starts, and at first powers to control acquisition module (5) and battery information acquisition module (6) by low pressure output module (2), and simultaneously, the charger low-voltage output begins to charge to low tension battery (3);
B) control acquisition module (4) receives battery current to be charged (9) state information that battery information acquisition module (5) is gathered, and selects charge mode according to state informations such as current battery SOC to be charged, cell voltage, battery temperature and charge mode inputs;
C) instruction charging modes (7) charges to battery for the charging curve of charger according to the battery management system setting, ordinary circumstance is that first constant current charge reaches upper voltage limit up to cell voltage, constant voltage charge is reduced to set point up to electric current then, and last little current impulse charging is constant up to charging voltage.Under this kind pattern, constant current charge stage charging rate is very fast, but because of charging current is bigger, cell voltage reaches upper voltage limit soon, thereby enters the very long constant voltage charge stage, finally makes whole charging process longer;
D) multistage constant current charge mode (8) then is that charger reads behind the battery information form with grading current to battery charge.
Wherein, described multistage constant current charge mode charging process further is preferably as follows:
A), charger exports first charging current and adopts current constant mode that described electrokinetic cell is charged, and rises to first upper limit cut-ff voltage until the charging voltage of described electrokinetic cell;
B), charger is exported second charging current and is adopted current constant mode that described electrokinetic cell is charged, charging voltage until described electrokinetic cell rises to second upper limit cut-ff voltage, wherein said second charging current is less than described first charging current, and described second upper limit cut-ff voltage is greater than described first upper limit cut-ff voltage;
C), charger is exported the 3rd charging current and is adopted current constant mode that described electrokinetic cell is charged, charging voltage until described electrokinetic cell rises to the 3rd upper limit cut-ff voltage, wherein said the 3rd charging current is less than described second charging current, and described the 3rd upper limit cut-ff voltage is greater than described second upper limit cut-ff voltage;
D), the mode according to a-c reduces charging current successively, up to the charging current of charger output when setting minimum charge current, by this charging current described electrokinetic cell is carried out constant current charge, when described power battery charging voltage changes in half an hour when being no more than 1V, charger is charge closing machine automatically with regard to judging described electrokinetic cell to be full of.
According to a preferred embodiment of the invention, in multistage constant current charge mode, only (as battery upper limit cut-ff voltage in this example is 350VDC to the upper limit cut-ff voltage of needs setting battery, following data are all from this example), charger output 7A constant current earlier rises to upper limit cut-ff voltage to battery charge up to cell voltage then; The charger output current reduces 1A automatically then, again with the 6A constant current to battery charge, rise to upper limit cut-ff voltage once more up to cell voltage; The charger output current reduces 1A again automatically then, to battery charge, rises to upper limit cut-ff voltage up to cell voltage with the 5A constant current; By that analogy, be reduced to 2A up to the charger output current, and cell voltage interior the variation when being no more than 1V half an hour, charger is full of with regard to the judgement battery and cuts out automatically.
At the preferable case study on implementation of the present invention is Chang'an small-sized pure electric automobile vehicle intelligent charger, and referring to Fig. 2, its main modular comprises:
(1) main transformer changes circuit part: the function of this partial circuit is will the alternating current of fluctuation be arranged from civil power, converts the direct current of stable output on request to, for charge in batteries provides electric energy.This partial circuit is made of 2 single-phase input rectifying filter circuit unit, 1 DC-AC inverter circuit unit and each power tube drive circuit, specifically carries out (3), (9), (10) function in the present invention, to the charging of high-low pressure storage battery.
(2) charging control loop part: this partial circuit is a main hardware carrier of the present invention, mainly is responsible for the functions such as information gathering, information process analysis and system protection of charging system.On this routine hardware circuit, constitute, carry out control collection, battery information collection and charge mode selection function in the present invention by processor controls unit, information memory cell, battery information Acquisition Circuit unit and protective circuit unit.Charging system is when work, and main circuit and control loop interact, and realizes safe, the quick and intelligent charge to batteries.The processor controls unit is by CAN bus and car load CAN communication.
(3) charge controller programming part: charge controller is after analyzing and handling the information that collects, whole charging process is controlled, main program comprise main program, manual powered control subprogram, each battery charge automatically subprogram, the ampere-hour of charging is counted counting subroutine, data and is sent subprogram, Data Receiving interruption subroutine, regularly interruption subroutine and fault interruption subroutine etc.
Since adopt intelligent charge, all different according to each stage charging voltage of different batteries with charging current.Provide the magnitude of voltage or the current value of the charging in each stage by DSP, compare, change the ON time that the PWM value changes MOSFET, reach the purpose that obtains the stable output valve of difference in different battery different phases with the corresponding voltage current value of sampling gained.
To testing in the vehicle charging process, charger safety, effectively operation can be charged to electrocar on request in the present invention.
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.

Claims (4)

1. pure electric automobile intelligent charging method based on the intelligent charge system said method comprising the steps of:
A): charger starts, and at first powers to control acquisition module (4) and battery information acquisition module (5) by low pressure output module (2), and simultaneously, the low-voltage output of charger begins to charge to low tension battery (3);
B): control acquisition module (4) receives the state information of the electrokinetic cell current to be charged (10) of battery information acquisition module (5) collection, selects charge mode according to current electrokinetic cell state information to be charged;
C): when the self-defined charge mode of needs, adopt instruction charging modes (7), promptly the charging curve of setting according to battery management system charges to described electrokinetic cell;
D): when the automatic charge mode of needs, adopt multistage constant current charge mode (8) that described electrokinetic cell is charged, promptly with the form of grading current to power battery charging.
2. intelligent charging method according to claim 1, it is characterized in that, the charging curve of described instruction charging modes is preferably: first constant current charge reaches capping voltage up to described power battery charging voltage, adopt constant voltage charge to be reduced to set point then, adopt little current impulse charging constant at last up to charging voltage up to charging current.
3. intelligent charging method according to claim 1 and 2 is characterized in that, described multistage constant current charge mode charging process further is preferably as follows:
1), charger exports first charging current and adopts current constant mode that described electrokinetic cell is charged, and rises to first upper limit cut-ff voltage until the charging voltage of described electrokinetic cell;
2), charger is exported second charging current and is adopted current constant mode that described electrokinetic cell is charged, charging voltage until described electrokinetic cell rises to second upper limit cut-ff voltage, wherein said second charging current is less than described first charging current, and described second upper limit cut-ff voltage is greater than described first upper limit cut-ff voltage;
3), charger is exported the 3rd charging current and is adopted current constant mode that described electrokinetic cell is charged, charging voltage until described electrokinetic cell rises to the 3rd upper limit cut-ff voltage, wherein said the 3rd charging current is less than described second charging current, and described the 3rd upper limit cut-ff voltage is greater than described second upper limit cut-ff voltage;
4), according to 1)-3) mode reduce charging current successively, up to the charging current of charger output when setting minimum charge current, by this charging current described electrokinetic cell is carried out constant current charge, when described power battery charging voltage changes in half an hour when being no more than 1V, charger is charge closing machine automatically with regard to judging described electrokinetic cell to be full of.
4. intelligent charging method according to claim 3 is characterized in that, described first charging current is preferably 7A, next stage charging current reduce 1A successively.
CN2010105250823A 2010-10-29 2010-10-29 Intelligent charging method for pure electric automobile Pending CN101969218A (en)

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CN2010105250823A CN101969218A (en) 2010-10-29 2010-10-29 Intelligent charging method for pure electric automobile
PCT/CN2011/079086 WO2012055294A1 (en) 2010-10-29 2011-08-30 Intelligent charging method and device for pure electric automobile

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055294A1 (en) * 2010-10-29 2012-05-03 重庆长安汽车股份有限公司 Intelligent charging method and device for pure electric automobile
CN102738847A (en) * 2011-04-12 2012-10-17 高达能源科技股份有限公司 Charging module and rechargeable battery assembly for electric vehicle
CN103078364A (en) * 2012-12-25 2013-05-01 深圳先进技术研究院 Charging system based on robot
CN103269115A (en) * 2013-06-05 2013-08-28 浙江师范大学 Portable intelligent charger of electric car
CN103701173A (en) * 2013-12-30 2014-04-02 山东申普交通科技有限公司 Intelligent charger and charging control strategies
CN104124484A (en) * 2014-08-08 2014-10-29 江苏超威电源有限公司 Vacuum negative pressure type quick-charging method of cadmium-free internal-formation storage battery
CN104242623A (en) * 2014-09-05 2014-12-24 中南民族大学 Quick start method and quick start control circuit of switching power supply
CN105162181A (en) * 2015-07-01 2015-12-16 深圳天珑无线科技有限公司 Charging method and device
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