CN105429238A - Hybrid electric vehicle flexible charging system and charging method - Google Patents
Hybrid electric vehicle flexible charging system and charging method Download PDFInfo
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- CN105429238A CN105429238A CN201511007143.6A CN201511007143A CN105429238A CN 105429238 A CN105429238 A CN 105429238A CN 201511007143 A CN201511007143 A CN 201511007143A CN 105429238 A CN105429238 A CN 105429238A
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- H02J7/0027—
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- 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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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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
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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
- H01M10/443—Methods for charging or discharging in response to temperature
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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
- H02J7/007—Regulation of charging or discharging current or voltage
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- 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
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- 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
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- 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
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- 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
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention provides a hybrid electric vehicle flexible charging system, which comprises a flexible charging control module. The flexible charging control module comprises a data acquisition unit for acquiring real-time charging parameters of a power battery from a battery management system during the power battery charging process, a data storage unit for storing a flexible charging curve, a data analysis unit for comparing the real-time charging parameters and the flexible charging curve and generating the charging parameter optimal value, a central processor for receiving the charging parameter optimal value generated by the data analysis unit and outputting the charging parameter optimal value via an output control unit, and the output control unit for controlling the power battery for charging according to the charging parameter optimal value outputted by the central processor. The invention also discloses a charging method. Thus, real-time parameters of a single battery or a battery pack can be detected in real time, the charging process is dynamically optimized according to the service life state of the battery, hidden safety dangers are eliminated, the operation is safe and reliable and practicability is high.
Description
Technical field
The present invention relates to Development of HEV Technology field, particularly relate to the flexible charging system of a kind of hybrid vehicle and charging method.
Background technology
In prior art, the battery variety that electric automobile can adopt only comprises the battery of several energy storage for physically of several electrochemical cells such as lead-acid battery, nickel-cadmium cell, Ni-MH battery and lithium battery and only a few.The useful life of existing battery for electric automobile far can not meet actual needs, is the one of the main reasons restricting Development of Electric Vehicles for a long time.
Battery management system is the important component part of electric automobile power battery, and its effect is the fail safe improving battery use, effectively manages battery simultaneously, improves service efficiency.But in traditional mixed power vehicle, the Charge Management algorithm of battery management system inner setting is irregular to differ, and does not have the writing function of historical data, can not carry out reasonable adjusting according to the actual situation that makes of battery, when the service life state of battery changes, also pro-active intervention adjustment cannot be carried out.In addition, generator and Vehicular charger are to power battery charging, and charging control signal generates on the basis of balanced power energy based on driving cycles.But the cell in electrokinetic cell just there are differences when producing, and internal environment uneven during use increases these differences gradually.Above-mentioned situation can make electrokinetic cell when charging, and the irrational charging current of passive acceptance accelerates the aging of battery, reduces the useful life of battery.
In sum, exist when the service life state of battery changes in prior art, power battery charging parameter is unreasonable, causes the fireballing shortcoming of cell degradation.
Summary of the invention
The invention provides the flexible charging system of a kind of hybrid vehicle, according to battery history record of charging flexible charge parameter, prior art medium power battery charging parameter can be solved unreasonable, the fireballing technical problem of cell degradation.Be specially:
The flexible charging system of a kind of hybrid vehicle, comprises flexible charge control module; Described flexible charge control module comprises:
Data acquisition unit, for obtaining the real time charging parameter of electrokinetic cell in power battery charging process from battery management system;
Data storage cell, for storing flexible charging curve;
Data analysis unit, for comparing real time charging parameter and flexible charging curve and generating charge parameter optimal value;
Central processing unit, for receiving the charge parameter optimal value of data analysis unit generation and being exported by output control unit;
Output control unit, controls power battery charging for the charge parameter optimal value exported according to central processing unit.
Further, when the real time charging parameter of described data collecting module collected is equal with the charge parameter optimal value calculated according to flexible charging curve, charging terminates.
Further, the charge parameter at the end of charging is stored in described data storage cell; Charge parameter at the end of central processing unit calls charging by the flexible charging curve of data analysis unit correction, data storage cell stores revised flexible charging curve.
Further, also comprise type collection module in described data acquisition unit, described type collection module obtains the charge mode of electrokinetic cell from ECU.
Further, if be operated in energy feedback pattern, then described data acquisition unit gather the real time charging parameter of engine controller by battery management system and a road output control unit feedback charge parameter optimal value to engine controller, control generator charging; If be operated in parking charge mode, then described data acquisition unit gather the real time charging parameter of Vehicular charger by battery management system and another road output control unit feedback charge parameter optimal value to Vehicular charger, control power battery charging.
Preferably, described flexible charging curve is relation curve or the relation curve in charging voltage-battery charge state-battery temperature-charging interval in charging current-battery charge state-battery temperature-charging interval.
Preferably, in the relation curve in charging current-battery charge state-battery temperature-charging interval, when battery operating temperature and charging current constant time, battery charge state linearly increased with the charging interval.
Preferably, described charge parameter comprises battery charge state, battery temperature, charging current or charging voltage and cell ceiling voltage.
The flexible charging system of hybrid vehicle provided by the present invention, by increasing flexible charge control module, realize inner data storage, data computation and analysis, automatically data calculating is carried out in conjunction with battery life status, battery actual environment parameter, and feed back rational charging curve by flexible charge control module, coordinate generator or Vehicular charger adjustment generates optimum charging voltage and charging current, can extending battery life, slow down battery aging.
The present invention discloses a kind of charging method applying above-mentioned charging system, specifically comprise the following steps:
A, generates charge request signal;
B, the data acquisition unit of flexible charge control module is established a communications link by bus and battery management system;
C, the mode signal acquisition module in data acquisition unit is set up with ECU and is communicated, and mode signal acquisition module obtains charge mode from ECU;
D, if be operated in energy feedback pattern, data acquisition unit is by the real time charging parameter of battery management system online acquisition engine controller; If be operated in parking charge mode, data acquisition unit is by the real time charging parameter of battery management system online acquisition Vehicular charger;
E, data analysis unit is by the flexible charging curve in central processing unit calling data memory cell, and whether demand is charged to judge electrokinetic cell;
F, if the charging of electrokinetic cell demand, the charge parameter that data acquisition unit input is gathered by battery management system;
G, whether central processing unit detects in data storage cell the flexible charging curve of history;
H, if store the flexible charging curve of history in data storage cell, then central processing unit exports control signal, and control data analytic unit compares real time charging parameter and the flexible charging curve of history and generates charge parameter optimal value; If do not store the flexible charging curve of history in data storage cell, then central processing unit exports control signal, control data analytic unit, according to the preset type of battery and ambient temperature, calculates and generates flexible charging curve and compare real time charging parameter and flexible charging curve generation charge parameter optimal value;
I, central processing unit receives the charge parameter optimal value of data analysis unit generation and feeds back to engine controller or Vehicular charger by output control unit, and control generator or charger charge according to charge parameter optimal value;
J, data acquisition unit Real-time Collection charge parameter, if real time charging parameter equals the charge parameter optimal value calculated according to flexible charging curve, then end of charging; If real time charging parameter is not equal to charge parameter optimal value, then repeat step h and step I, until the real time charging parameter of data acquisition unit acquires is equal with charge parameter optimal value;
K, stores the charge parameter at the end of charging in data storage cell; Charge parameter at the end of central processing unit calls charging by the flexible charging curve of data analysis unit correction, data storage cell stores revised flexible charging curve as the flexible charging curve of history;
Wherein, described flexible charging curve is relation curve or the relation curve in charging voltage-battery charge state-battery operating temperature-charging interval in charging current-battery charge state-battery operating temperature-charging interval; When charging current-battery charge state-battery operating temperature-charging interval relation curve is as flexible charging curve, when battery operating temperature and charging current constant time, battery charge state linearly increased with the charging interval.
Further, described charge parameter comprises battery charge state, battery temperature, charging current or charging voltage and cell ceiling voltage.
Charging method proposed by the invention, can detect the real-time parameter in cell or battery pack in real time and carry out dynamic optimization to charging process according to battery life status, having stopped potential safety hazard.There is safe and reliable and that practicality is high advantage.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural schematic block diagram of flexible charging system first embodiment of hybrid vehicle proposed by the invention;
Fig. 2 is the electrical connection schematic block diagram of charging system flexible shown in Fig. 1;
Fig. 3 is the flow chart of a kind of embodiment of charging method proposed by the invention;
Fig. 4 is the flexible charging curve of one in Fig. 3.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See shown in Fig. 1 to Fig. 2, completely different from hybrid vehicle charging system of the prior art, be provided with flexible charge control module 1 in the present embodiment.Wherein, described flexible charge control module 1 at least comprises several parts such as data acquisition unit 11, data storage cell 12, data analysis unit 13, output control unit 16 and central processing unit 14.
Specifically, data acquisition unit 11 for obtaining the real time charging parameter of electrokinetic cell 7 in electrokinetic cell 7 charging process from battery management system 2.Data storage cell 12 is for storing flexible charging curve.Data analysis unit 13 is for comparing real time charging parameter and flexible charging curve and generating charge parameter optimal value.Central processing unit 14 is for receiving the charge parameter optimal value of data analysis unit 13 generation and being exported by output control unit 16.Output control unit 16 feeds back charge parameter optimal value according to central processing unit 14, and controls electrokinetic cell 7 and charge.
The workflow of the flexible charging system of hybrid vehicle is as follows: first, as a part for charging system, the input of flexible charge control module 1 connects battery management system 2 and ECU3 respectively by bus, and output connects engine controller 5 and Vehicular charger 4 respectively by a road output control unit 16.When electrokinetic cell 7 demand is charged, battery management system 2 generates and sends charge request, establishes a communications link between flexible charge control module 1 and battery management system 2.The data acquisition unit 11 of flexible charge control module 1 obtains charge parameter from battery management system 2.Charge parameter comprises battery charge state, battery temperature, charging current or charging voltage and cell ceiling voltage.
When electrokinetic cell 7 demand is charged, flexible charge control module 1 is also set up with ECU3 and is communicated.Type collection module in the data acquisition unit 11 of flexible charge control module 1 obtains the mode of operation of mixed power vehicle from ECU3.The mixed power vehicle of ECU3 feedback is operated in energy feedback pattern or parking charge mode.
Electrokinetic cell 7 starts charging, and flexible charge control module 1 is by clock circuit 15 allocating time signal.Data acquisition unit 11 starts the real time charging parameter that real-time online gathers battery management system 2 generation, if be operated in energy feedback pattern, then data acquisition unit 11 obtains the real time charging parameter of engine controller 5 by battery management system 2, if and be operated in parking charge mode, then data acquisition unit 11 obtains the real time charging parameter of Vehicular charger 4 by battery management system 2.
Because the internal structure of different battery is different, wish in charging that the target realized is, although the service life state of battery is changing always, but under the condition that battery temperature is stable, charge parameter optimal value is applied to electrokinetic cell 7, i.e. charging current or charging voltage, the state-of-charge of battery can increase with stable amplitude linearity according to flexible charging curve, avoids occurring fluctuation as far as possible, overcharges or crosses the situation of putting.For above-mentioned purpose, the flexible charging curve described in the present embodiment is the relation curve in charging current-battery charge state-battery temperature-charging interval.Furtherly, in flexible charging curve, when battery operated and charging current give timing, battery charge state linearly increased with the charging interval, avoided occurring overcharging or crossing the phenomenon of putting.And when electrokinetic cell be in slow fill state time, namely SOC is at 0-20% with higher than in the numerical intervals of 80%, and battery charge state increased with the speed of the speed linearly increased and linear decrease respectively with the charging interval.Thus in whole charging process, according to the flexible charging curve adjustment charging current constantly revised, realize the linear increment relation in battery charge state and charging interval.Same, charging voltage-battery charge state-battery temperature-charging interval also can form similar mapping relations curve, namely according to the flexible charging curve in charging voltage-battery charge state-battery temperature-charging interval, in charging process, adjust charging voltage, also can realize the linear increment relation in battery charge state and charging interval.
Flexible charging curve in data storage cell 12 has at least can two kinds of generating modes.One is the attribute according to different dynamic battery 7, obtains and be stored in data storage cell 12 before electrokinetic cell 7 primary charging under factory calibration condition through overtesting, as the flexible charging curve of preset history.Another kind is after starting charging, and data acquisition module begins through the real time charging parameter that battery management system 2 obtains electrokinetic cell 7 and obtains battery variety type information simultaneously, and exports real time charging parameter to data analysis unit 13 by central processing unit 14.Data analysis unit 13 is according to charging current or charging voltage, and the state-of-charge of electrokinetic cell 7 generates flexible charging curve and is stored in data storage cell 12.
The real time charging parameter that data acquisition unit 11 gathers by data analysis unit 13 is compared with the flexible charging curve called from data storage cell 12 by central processing unit 14, the optimal value of charge parameter is generated, i.e. charging current or charging voltage according to flexible charging curve.Central processing unit 14 receives the charge parameter optimal value of data analysis unit 13 generation and exports engine controller 5 or Vehicular charger 4 to by output control unit 16, generates control signal control electrokinetic cell 7 and charges according to charge parameter optimal value.Data acquisition unit 11 continues through battery management system 2 and gathers real time charging parameter and feed back to data analysis unit 13, data analysis unit 13 exports new charge parameter optimal value to central processing unit 14 according to real time charging parameter, central processing unit 14 exports engine controller 5 or Vehicular charger 4 to by output control unit 16, generate control signal control electrokinetic cell 7 to charge according to new charge parameter optimal value, perform above-mentioned circulation, until the charge parameter that data acquisition unit 11 gathers equals the charge parameter in flexible charging curve, once to charge end.Now, data storage cell 12 records the charge parameter at the end of charging, and revises flexible charging curve.Revised flexible charging curve is according to the revised flexible charging curve of battery life status.
Wherein, data acquisition unit 11 includes but not limited to battery charge state, battery temperature, charging current or charging voltage and cell ceiling voltage by the real time charging parameter that battery management system 2 gathers.
The present embodiment is by arranging flexible charge control module 1, realize inner data storage, data computation and analysis, automatically data calculating is carried out in conjunction with battery life status, battery actual environment parameter, and feed back rational charging curve by flexible charge control module 1, coordination generator 6 or Vehicular charger 4 adjustment generate optimum charging voltage and charging current, can extending battery life, slow down battery aging.
The present invention protects a kind of mixed power vehicle charging method utilizing the specifically described charging system of above-described embodiment simultaneously, specifically comprises the following steps as shown in Figure 3:
A, electrokinetic cell 7 generates and sends charge request signal by battery management system 2.
B, the data acquisition unit 11 of flexible charge control module 1 is established a communications link by bus and battery management system 2.
C, the mode signal acquisition module in data acquisition unit 11 is set up with ECU3 and is communicated, and mode signal acquisition module obtains charge mode from ECU3.
D, if be operated in energy feedback pattern, data acquisition unit 11 is by the real time charging parameter of battery management system 2 online acquisition engine controller 5; If be operated in parking charge mode, data acquisition unit 11 is by the real time charging parameter of battery management system 2 online acquisition Vehicular charger 4.
E, data analysis unit 13 is by the flexible charging curve in central processing unit 14 calling data memory cell 12, and whether demand is charged to judge electrokinetic cell 7.
F, if the charging of electrokinetic cell 7 demand, data acquisition unit 11 inputs the charge parameter gathered by battery management system 2.
G, whether central processing unit 14 detects in data storage cell 12 the flexible charging curve of history.
H, if store the flexible charging curve of history in data storage cell 12, then central processing unit 14 exports control signal, and control data analytic unit 13 compares real time charging parameter and the flexible charging curve of history and generates charge parameter optimal value; If do not store the flexible charging curve of history in data storage cell 12, then central processing unit 14 exports control signal, control data analytic unit, according to battery threshold type and ambient temperature, calculates and generates flexible charging curve and compare real time charging parameter and flexible charging curve generation charge parameter optimal value.
I, central processing unit 14 receives the charge parameter optimal value of data analysis unit 13 generation and feeds back to engine controller 5 or Vehicular charger 4 by output control unit 16, and control generator 6 or charger charge according to charge parameter optimal value.
J, data acquisition unit 11 Real-time Collection charge parameter, if real time charging parameter equals the charge parameter optimal value calculated according to flexible charging curve, then end of charging; If real time charging parameter is not equal to charge parameter optimal value, then repeat step h and step I, until the real time charging parameter that data acquisition unit 11 gathers is equal with charge parameter optimal value.
K, stores the charge parameter at the end of charging in data storage cell 12; Charge parameter at the end of central processing unit 14 calls charging also revises flexible charging curve by data analysis unit 13, and data storage cell 12 stores revised flexible charging curve.Revised flexible charging curve have modified battery charge cycle and to add up the charge parameter error caused, and embodies the service life state of battery as the flexible charging curve of history.
Wherein, described flexible charging curve is relation curve or the relation curve in charging voltage-battery charge state-battery operating temperature-charging interval in charging current-battery charge state-battery operating temperature-charging interval; When charging current-battery charge state-battery operating temperature-charging interval relation curve is as flexible charging curve, when battery operating temperature and charging current constant time, battery charge state linearly increased with the charging interval.
Described charge parameter comprises battery charge state, battery temperature, charging current or charging voltage and cell ceiling voltage.
Charging method proposed by the invention, can detect the real-time parameter in cell or battery pack in real time and carry out dynamic optimization to charging process according to battery life status, having stopped potential safety hazard.There is safe and reliable and that practicality is high advantage.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the flexible charging system of hybrid vehicle, is characterized in that, comprise flexible charge control module; Described flexible charge control module comprises:
Data acquisition unit, for obtaining the real time charging parameter of electrokinetic cell in power battery charging process from battery management system;
Data storage cell, for storing flexible charging curve;
Data analysis unit, for comparing real time charging parameter and flexible charging curve and generating charge parameter optimal value;
Central processing unit, for receiving the charge parameter optimal value of data analysis unit generation and being exported by output control unit;
Output control unit, controls power battery charging for the charge parameter optimal value exported according to central processing unit.
2. the flexible charging system of hybrid vehicle according to claim 1, is characterized in that, when the real time charging parameter of described data collecting module collected is equal with the charge parameter optimal value calculated according to flexible charging curve, charging terminates.
3. the flexible charging system of hybrid vehicle according to claim 2, is characterized in that, stores the charge parameter at the end of charging in described data storage cell; Charge parameter at the end of central processing unit calls charging by the flexible charging curve of data analysis unit correction, data storage cell stores revised flexible charging curve.
4. the flexible charging system of hybrid vehicle according to claim 3, it is characterized in that, also comprise type collection module in described data acquisition unit, described type collection module obtains the charge mode of electrokinetic cell from ECU.
5. the flexible charging system of hybrid vehicle according to claim 4, it is characterized in that, if be operated in energy feedback pattern, then described data acquisition unit gather the real time charging parameter of engine controller by battery management system and a road output control unit feedback charge parameter optimal value to engine controller, control generator charging; If be operated in parking charge mode, then described data acquisition unit gather the real time charging parameter of Vehicular charger by battery management system and another road output control unit feedback charge parameter optimal value to Vehicular charger, control power battery charging.
6. the flexible charging system of hybrid vehicle according to claim 5, is characterized in that: described flexible charging curve is relation curve or the relation curve in charging voltage-battery charge state-battery temperature-charging interval in charging current-battery charge state-battery temperature-charging interval.
7. the flexible charging system of hybrid vehicle according to claim 6, it is characterized in that, in the relation curve in charging current-battery charge state-battery temperature-charging interval, when battery operating temperature and charging current constant time, battery charge state linearly increased with the charging interval.
8. the flexible charging system of hybrid vehicle according to claim 7, it is characterized in that, described charge parameter comprises battery charge state, battery temperature, charging current or charging voltage and cell ceiling voltage.
9. adopt a charging method for flexible charging system as claimed in claim 7, comprise the following steps successively:
A, generates charge request signal;
B, the data acquisition unit of flexible charge control module is established a communications link by bus and battery management system;
C, the mode signal acquisition module in data acquisition unit is set up with ECU and is communicated, and mode signal acquisition module obtains charge mode from ECU;
D, if be operated in energy feedback pattern, data acquisition unit is by the real time charging parameter of battery management system online acquisition engine controller; If be operated in parking charge mode, data acquisition unit is by the real time charging parameter of battery management system online acquisition Vehicular charger;
E, data analysis unit is by the flexible charging curve in central processing unit calling data memory cell, and whether demand is charged to judge electrokinetic cell;
F, if the charging of electrokinetic cell demand, the charge parameter that data acquisition unit input is gathered by battery management system;
G, whether central processing unit detects in data storage cell the flexible charging curve of history;
H, if store the flexible charging curve of history in data storage cell, then central processing unit exports control signal, and control data analytic unit compares real time charging parameter and the flexible charging curve of history and generates charge parameter optimal value; If do not store the flexible charging curve of history in data storage cell, then central processing unit exports control signal, control data analytic unit, according to the preset type of battery and ambient temperature, calculates and generates flexible charging curve and compare real time charging parameter and flexible charging curve generation charge parameter optimal value;
I, central processing unit receives the charge parameter optimal value of data analysis unit generation and feeds back to engine controller or Vehicular charger by output control unit, and control generator or charger charge according to charge parameter optimal value;
J, data acquisition unit Real-time Collection charge parameter, if real time charging parameter equals the charge parameter optimal value calculated according to flexible charging curve, then end of charging; If real time charging parameter is not equal to charge parameter optimal value, then repeat step h and step I, until the real time charging parameter of data acquisition unit acquires is equal with charge parameter optimal value;
K, stores the charge parameter at the end of charging in data storage cell; Charge parameter at the end of central processing unit calls charging by the flexible charging curve of data analysis unit correction, data storage cell stores revised flexible charging curve as the flexible charging curve of history;
Wherein, described flexible charging curve is relation curve or the relation curve in charging voltage-battery charge state-battery operating temperature-charging interval in charging current-battery charge state-battery operating temperature-charging interval; When charging current-battery charge state-battery operating temperature-charging interval relation curve is as flexible charging curve, when battery operating temperature and charging current constant time, battery charge state linearly increased with the charging interval.
10. charging method according to claim 9, is characterized in that, described charge parameter comprises battery charge state, battery temperature, charging current or charging voltage and cell ceiling voltage.
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