CN105429238B - Flexible charging system and charging method for hybrid electric vehicle - Google Patents
Flexible charging system and charging method for hybrid electric vehicle Download PDFInfo
- Publication number
- CN105429238B CN105429238B CN201511007143.6A CN201511007143A CN105429238B CN 105429238 B CN105429238 B CN 105429238B CN 201511007143 A CN201511007143 A CN 201511007143A CN 105429238 B CN105429238 B CN 105429238B
- Authority
- CN
- China
- Prior art keywords
- charging
- battery
- flexible
- curve
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007726 management method Methods 0.000 claims abstract description 36
- 238000013500 data storage Methods 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 33
- 238000007405 data analysis Methods 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims description 8
- 230000032683 aging Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- H02J7/0027—
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention provides a flexible charging system of a hybrid electric vehicle, which comprises a flexible charging control module; it includes: the data acquisition unit is used for acquiring real-time charging parameters of the power battery from the battery management system in the charging process of the power battery; the data storage unit is used for storing a flexible charging curve; the data analysis unit is used for comparing the real-time charging parameters with the flexible charging curve and generating optimal values of the charging parameters; the central processing unit is used for receiving the charging parameter optimal value generated by the data analysis unit and outputting the charging parameter optimal value through the output control unit; and the output control unit is used for controlling the power battery to be charged according to the optimal value of the charging parameter output by the central processing unit. Meanwhile, a charging method is disclosed, which can detect real-time parameters in a single battery or a battery pack in real time and dynamically optimize the charging process according to the service life state of the battery, thereby avoiding potential safety hazards. Has the advantages of safety, reliability and high practicability.
Description
Technical Field
The invention relates to the technical field of hybrid electric vehicles, in particular to a flexible charging system and a flexible charging method for a hybrid electric vehicle.
Background
In the prior art, the types of batteries that can be used by the electric vehicle only include a lead-acid battery, a nickel-cadmium battery, a nickel-hydrogen battery, a lithium battery, and other electrochemical batteries, and a very small number of batteries that store energy in a physical manner. The service life of the existing battery for the electric automobile can not meet the actual requirement, and is one of the main reasons for restricting the development of the electric automobile for a long time.
The battery management system is an important component of the power battery of the electric automobile, and is used for improving the use safety of the battery, effectively managing the battery and improving the use efficiency. However, in the conventional hybrid electric vehicle, the charging management algorithms set in the battery management system are different, and the battery management system does not have a function of recording historical data, so that the battery management system cannot be reasonably adjusted according to the actual conditions of the battery, and cannot be actively intervened and adjusted when the service life state of the battery changes. In addition, the generator and the vehicle-mounted charger charge the power battery, and the charging control signal is generated on the basis of balancing power energy based on the driving condition. However, the single batteries in the power battery have differences in production, and the non-uniform internal environment in use gradually increases the differences. The situation can lead the power battery to passively receive unreasonable charging current when charging, thus accelerating the aging of the battery and reducing the service life of the battery.
In summary, in the prior art, when the life state of the battery changes, the charging parameters of the power battery are not reasonable, which results in a fast aging speed of the battery.
Disclosure of Invention
The invention provides a flexible charging system of a hybrid electric vehicle, which can flexibly adjust charging parameters according to historical charging records of batteries and solve the technical problems of unreasonable charging parameters of power batteries and high aging speed of the batteries in the prior art. The method specifically comprises the following steps:
a flexible charging system of a hybrid electric vehicle comprises a flexible charging control module; the flexible charging control module comprises:
the data acquisition unit is used for acquiring real-time charging parameters of the power battery from the battery management system in the charging process of the power battery;
the data storage unit is used for storing a flexible charging curve;
the data analysis unit is used for comparing the real-time charging parameters with the flexible charging curve and generating optimal values of the charging parameters;
the central processing unit is used for receiving the charging parameter optimal value generated by the data analysis unit and outputting the charging parameter optimal value through the output control unit;
and the output control unit is used for controlling the power battery to be charged according to the optimal value of the charging parameter output by the central processing unit.
Further, when the real-time charging parameters acquired by the data acquisition module are equal to the optimal charging parameter values calculated according to the flexible charging curve, the charging is finished.
Further, the data storage unit stores the charging parameters at the end of charging; the central processing unit calls the charging parameters at the end of charging and corrects the flexible charging curve through the data analysis unit, and the data storage unit stores the corrected flexible charging curve.
Furthermore, the data acquisition unit further comprises a mode acquisition module, and the mode acquisition module acquires the charging mode of the power battery from the ECU.
Furthermore, if the power generator works in the energy feedback mode, the data acquisition unit acquires the real-time charging parameters of the power generator controller through the battery management system, and one output control unit feeds back the optimal value of the charging parameters to the power generator controller to control the power generator to charge; if the vehicle-mounted battery charger works in the parking charging mode, the data acquisition unit acquires real-time charging parameters of the vehicle-mounted battery charger through the battery management system, and the other path of output control unit feeds back optimal values of the charging parameters to the vehicle-mounted battery charger to control the power battery to charge.
Preferably, the flexible charging curve is a relation curve of charging current-battery charge state-battery temperature-charging time or a relation curve of charging voltage-battery charge state-battery temperature-charging time.
Preferably, in the relation curve of charging current-battery state of charge-battery temperature-charging time, when the battery working temperature and the charging current are constant, the battery state of charge linearly increases along with the charging time.
Preferably, the charging parameters include a battery state of charge, a battery temperature, a charging current or a charging voltage, and a maximum voltage of a single battery.
According to the flexible charging system for the hybrid electric vehicle, the flexible charging control module is additionally arranged, internal data storage, data calculation and analysis are achieved, data calculation is automatically carried out by combining the service life state of the battery and the actual environmental parameters of the battery, a reasonable charging curve is fed back through the flexible charging control module, the generator or the vehicle-mounted charger is coordinated to adjust and generate the optimal charging voltage and charging current, the service life of the battery can be prolonged, and the aging of the battery is slowed down.
The invention also discloses a charging method applying the charging system, which comprises the following steps:
a, generating a charging request signal;
b, establishing communication connection between a data acquisition unit of the flexible charging control module and a battery management system through a bus;
c, a mode signal acquisition module in the data acquisition unit establishes communication with the ECU, and the mode signal acquisition module acquires a charging mode from the ECU;
d, if the generator works in the energy feedback mode, the data acquisition unit acquires the real-time charging parameters of the generator controller on line through the battery management system; if the vehicle-mounted charger works in the parking charging mode, the data acquisition unit acquires real-time charging parameters of the vehicle-mounted charger on line through the battery management system;
e, the data analysis unit calls the flexible charging curve in the data storage unit through the central processing unit to judge whether the power battery needs to be charged;
if the power battery needs to be charged, the data acquisition unit inputs charging parameters acquired through the battery management system;
g, detecting whether a historical flexible charging curve exists in the data storage unit by the central processing unit;
h, if the data storage unit stores a historical flexible charging curve, the central processing unit outputs a control signal, and the control data analysis unit compares the real-time charging parameter with the historical flexible charging curve and generates an optimal value of the charging parameter; if the historical flexible charging curve is not stored in the data storage unit, the central processing unit outputs a control signal, and the control data analysis unit calculates and generates a flexible charging curve according to the preset type of the battery and the ambient temperature and compares the real-time charging parameter with the flexible charging curve to generate the optimal value of the charging parameter;
the central processing unit receives the charging parameter optimal value generated by the data analysis unit, feeds the charging parameter optimal value back to the generator controller or the vehicle-mounted charger through the output control unit, and controls the generator or the charger to charge according to the charging parameter optimal value;
j, the data acquisition unit acquires the charging parameters in real time, and if the real-time charging parameters are equal to the optimal values of the charging parameters calculated according to the flexible charging curve, the charging is finished; if the real-time charging parameter is not equal to the optimal value of the charging parameter, repeating the step h and the step i until the real-time charging parameter acquired by the data acquisition unit is equal to the optimal value of the charging parameter;
k, storing the charging parameters when the charging is finished in the data storage unit; the central processing unit calls the charging parameters at the end of charging and corrects the flexible charging curve through the data analysis unit, and the data storage unit stores the corrected flexible charging curve as a historical flexible charging curve;
the flexible charging curve is a relation curve of charging current-battery charge state-battery working temperature-charging time or a relation curve of charging voltage-battery charge state-battery working temperature-charging time; when the relation curve of charging current-battery charge state-battery working temperature-charging time is taken as a flexible charging curve, the battery charge state linearly increases along with the charging time when the battery working temperature and the charging current are constant.
Further, the charging parameters include a battery state of charge, a battery temperature, a charging current or a charging voltage, and a maximum voltage of the single battery.
The charging method provided by the invention can detect real-time parameters in the single battery or the battery pack in real time and dynamically optimize the charging process according to the service life state of the battery, thereby avoiding potential safety hazards. Has the advantages of safety, reliability and high practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic block diagram of a flexible charging system of a hybrid electric vehicle according to a first embodiment of the present invention;
FIG. 2 is a schematic block diagram of the electrical connections of the flexible charging system shown in FIG. 1;
FIG. 3 is a flowchart illustrating a charging method according to an embodiment of the present invention;
fig. 4 is a flexible charging curve of fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 2, a flexible charging control module 1 is provided in the present embodiment, which is completely different from a hybrid vehicle charging system in the related art. The flexible charging control module 1 at least comprises a data acquisition unit 11, a data storage unit 12, a data analysis unit 13, an output control unit 16, a central processing unit 14 and the like.
Specifically, the data acquisition unit 11 is used for obtaining real-time charging parameters of the power battery 7 from the battery management system 2 during the charging process of the power battery 7. The data storage unit 12 is used to store a flexible charging profile. The data analysis unit 13 is used for comparing the real-time charging parameter with the flexible charging curve and generating the optimal value of the charging parameter. The central processing unit 14 is configured to receive the optimal value of the charging parameter generated by the data analysis unit 13 and output the optimal value through the output control unit 16. The output control unit 16 feeds back the optimal value of the charging parameter according to the central processing unit 14 and controls the power battery 7 to be charged.
The working process of the flexible charging system of the hybrid electric vehicle comprises the following steps that firstly, as a part of the charging system, the input end of a flexible charging control module 1 is respectively connected with a battery management system 2 and an ECU3 through buses, and the output end of the flexible charging control module is respectively connected with a generator controller 5 and a vehicle-mounted charger 4 through an output control unit 16. When the power battery 7 needs to be charged, the battery management system 2 generates and sends a charging request, and a communication connection is established between the flexible charging control module 1 and the battery management system 2. The data acquisition unit 11 of the flexible charging control module 1 obtains charging parameters from the battery management system 2. The charging parameters include battery state of charge, battery temperature, charging current or voltage, and cell peak voltage.
The flexible charging control module 1 also establishes communication with the ECU3 when the power battery 7 requires charging. The mode acquisition module in the data acquisition unit 11 of the flexible charging control module 1 acquires the operation mode of the hybrid vehicle from the ECU 3. The ECU3 feeds back the operation of the hybrid vehicle in the energy feedback mode or the parking charge mode.
The power battery 7 starts to charge, and the flexible charging control module 1 calls a time signal through the clock circuit 15. The data acquisition unit 11 starts to acquire real-time charging parameters generated by the battery management system 2 in real time on line, if the vehicle works in the energy feedback mode, the data acquisition unit 11 acquires the real-time charging parameters of the generator controller 5 through the battery management system 2, and if the vehicle works in the parking charging mode, the data acquisition unit 11 acquires the real-time charging parameters of the vehicle-mounted charger 4 through the battery management system 2.
Due to the different internal structures of different batteries, the goal to be achieved in charging is that although the service life state of the battery is changed all the time, the optimal value of the charging parameter, namely the charging current or the charging voltage, is applied to the power battery 7 under the condition that the temperature of the battery is stable, the charge state of the battery can be linearly increased in a stable range according to a flexible charging curve, and the situations of fluctuation, overcharge or overdischarge are avoided as much as possible. For the purposes described above, the flexible charging curve described in this embodiment is a charging current-battery state of charge-battery temperature-charging time relationship. Furthermore, in the flexible charging curve, when the battery works and the charging current is given, the charge state of the battery linearly increases along with the charging time, and the phenomenon of over-charging or over-discharging is avoided. And when the power battery is in a slow charging state, namely the SOC is in a numerical range of 0-20% and higher than 80%, the state of charge of the battery is increased at a linear increasing speed and a linear decreasing speed along with the charging time respectively. Therefore, in the whole charging process, the charging current is adjusted according to the continuously corrected flexible charging curve, and the linear increasing relation between the charge state of the battery and the charging time is realized. Similarly, a similar mapping relation curve can be formed by the charging voltage, the battery charge state, the battery temperature and the charging time, namely, according to a flexible charging curve of the charging voltage, the battery charge state, the battery temperature and the charging time, the charging voltage is adjusted in the charging process, and a linear increasing relation between the battery charge state and the charging time can also be realized.
The flexible charging profile in the data storage unit 12 can be generated in at least two ways. Firstly, according to the attributes of different power batteries 7, the flexible charging curve is obtained through tests under factory standard conditions and is stored in the data storage unit 12 before the power batteries 7 are charged for the first time, and the flexible charging curve is used as a preset historical flexible charging curve. The other is that after the charging is started, the data acquisition module starts to acquire the real-time charging parameters of the power battery 7 through the battery management system 2 and simultaneously acquires the battery type information, and outputs the real-time charging parameters to the data analysis unit 13 through the central processing unit 14. The data analysis unit 13 generates a flexible charging curve according to the charging current or charging voltage, and the state of charge of the power battery 7, and stores the curve in the data storage unit 12.
The data analysis unit 13 compares the real-time charging parameters acquired by the data acquisition unit 11 with the flexible charging curve called from the data storage unit 12 by the central processing unit 14, and generates the optimal value of the charging parameters, i.e., the charging current or the charging voltage, according to the flexible charging curve. The central processing unit 14 receives the optimal value of the charging parameter generated by the data analysis unit 13 and outputs the optimal value to the generator controller 5 or the vehicle-mounted charger 4 through the output control unit 16, and generates a control signal to control the power battery 7 to be charged according to the optimal value of the charging parameter. The data acquisition unit 11 continues to acquire real-time charging parameters through the battery management system 2 and feed back the real-time charging parameters to the data analysis unit 13, the data analysis unit 13 outputs a new optimal value of the charging parameters to the central processing unit 14 according to the real-time charging parameters, the central processing unit 14 outputs the new optimal value of the charging parameters to the generator controller 5 or the vehicle-mounted charger 4 through the output control unit 16, a control signal is generated to control the power battery 7 to charge according to the new optimal value of the charging parameters, the above cycle is executed until the charging parameters acquired by the data acquisition unit 11 are equal to the charging parameters in the flexible charging curve, and one-time charging is finished. At this time, the data storage unit 12 records the charging parameters at the end of charging, and corrects the flexible charging curve. The corrected flexible charging curve is the flexible charging curve corrected according to the service life state of the battery.
The real-time charging parameters acquired by the data acquisition unit 11 through the battery management system 2 include, but are not limited to, a battery state of charge, a battery temperature, a charging current or a charging voltage, and a maximum voltage of a single battery.
In the embodiment, by arranging the flexible charging control module 1, internal data storage, data calculation and analysis are realized, data calculation is automatically performed by combining the service life state of the battery and the actual environmental parameters of the battery, a reasonable charging curve is fed back by the flexible charging control module 1, and the generator 6 or the vehicle-mounted charger 4 is coordinated to adjust and generate the optimal charging voltage and charging current, so that the service life of the battery can be prolonged, and the aging of the battery is slowed down.
The invention also provides a hybrid electric vehicle charging method using the charging system specifically described in the above embodiment, specifically as shown in fig. 3, including the following steps:
a, the power battery 7 generates and transmits a charging request signal through the battery management system 2.
And b, the data acquisition unit 11 of the flexible charging control module 1 is in communication connection with the battery management system 2 through a bus.
c, the mode signal acquisition module in the data acquisition unit 11 establishes communication with the ECU3, and the mode signal acquisition module obtains the charging mode from the ECU 3.
d, if the generator works in the energy feedback mode, the data acquisition unit 11 acquires the real-time charging parameters of the generator controller 5 on line through the battery management system 2; if the vehicle-mounted charger works in the parking charging mode, the data acquisition unit 11 acquires real-time charging parameters of the vehicle-mounted charger 4 on line through the battery management system 2.
And e, the data analysis unit 13 calls the flexible charging curve in the data storage unit 12 through the central processing unit 14 to judge whether the power battery 7 needs to be charged.
f, if the power battery 7 needs to be charged, the data acquisition unit 11 inputs the charging parameters acquired by the battery management system 2.
g, the central processor 14 detects whether there is a historical flexible charging curve in the data storage unit 12.
h, if the data storage unit 12 stores a historical flexible charging curve, the central processing unit 14 outputs a control signal, and the control data analysis unit 13 compares the real-time charging parameter with the historical flexible charging curve and generates an optimal value of the charging parameter; if the historical flexible charging curve is not stored in the data storage unit 12, the central processing unit 14 outputs a control signal, and the control data analysis unit calculates and generates a flexible charging curve according to the battery threshold type and the environmental temperature and compares the real-time charging parameter with the flexible charging curve to generate the optimal value of the charging parameter.
And i, the central processing unit 14 receives the optimal charging parameter value generated by the data analysis unit 13, feeds the optimal charging parameter value back to the generator controller 5 or the vehicle-mounted charger 4 through the output control unit 16, and controls the generator 6 or the charger to charge according to the optimal charging parameter value.
j, the data acquisition unit 11 acquires the charging parameters in real time, and if the real-time charging parameters are equal to the optimal values of the charging parameters calculated according to the flexible charging curve, the charging is finished; and if the real-time charging parameter is not equal to the optimal value of the charging parameter, repeating the step h and the step i until the real-time charging parameter acquired by the data acquisition unit 11 is equal to the optimal value of the charging parameter.
k, storing the charging parameters at the end of charging in the data storage unit 12; the central processing unit 14 calls the charging parameters at the end of charging and corrects the flexible charging curve through the data analysis unit 13, and the data storage unit 12 stores the corrected flexible charging curve. The corrected flexible charging curve corrects charging parameter errors caused by battery charging cycle accumulation, and the charging parameter errors are used as a historical flexible charging curve to reflect the service life state of the battery.
The flexible charging curve is a relation curve of charging current-battery charge state-battery working temperature-charging time or a relation curve of charging voltage-battery charge state-battery working temperature-charging time; when the relation curve of charging current-battery charge state-battery working temperature-charging time is taken as a flexible charging curve, the battery charge state linearly increases along with the charging time when the battery working temperature and the charging current are constant.
The charging parameters include battery state of charge, battery temperature, charging current or charging voltage, and cell maximum voltage.
The charging method provided by the invention can detect real-time parameters in the single battery or the battery pack in real time and dynamically optimize the charging process according to the service life state of the battery, thereby avoiding potential safety hazards. Has the advantages of safety, reliability and high practicability.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The flexible charging system of the hybrid electric vehicle is characterized by comprising a flexible charging control module; the flexible charging control module comprises:
the data acquisition unit is used for acquiring real-time charging parameters of the power battery from the battery management system in the charging process of the power battery;
the data storage unit is used for storing a flexible charging curve;
the data analysis unit is used for comparing the real-time charging parameters with the flexible charging curve and generating optimal values of the charging parameters;
the central processing unit is used for receiving the charging parameter optimal value generated by the data analysis unit and outputting the charging parameter optimal value through the output control unit;
the output control unit is used for controlling the power battery to charge according to the optimal value of the charging parameter output by the central processing unit;
when the real-time charging parameters acquired by the data acquisition unit are equal to the optimal charging parameter values calculated according to the flexible charging curve, the charging is finished; the data storage unit stores charging parameters when charging is finished; the central processing unit calls the charging parameters at the end of charging and corrects the flexible charging curve through the data analysis unit, and the data storage unit stores the corrected flexible charging curve; the flexible charging curve is a relation curve of charging current-battery charge state-battery temperature-charging time or a relation curve of charging voltage-battery charge state-battery temperature-charging time.
2. The flexible charging system for hybrid electric vehicles according to claim 1, further comprising a mode acquisition module in the data acquisition unit, wherein the mode acquisition module obtains the charging mode of the power battery from the ECU.
3. The flexible charging system of claim 2, wherein if the flexible charging system is operating in the energy feedback mode, the data acquisition unit acquires the real-time charging parameters of the generator controller through the battery management system, and the output control unit feeds back the optimal charging parameter value to the generator controller to control the generator to charge; if the vehicle-mounted battery charger works in the parking charging mode, the data acquisition unit acquires real-time charging parameters of the vehicle-mounted battery charger through the battery management system, and the other path of output control unit feeds back optimal values of the charging parameters to the vehicle-mounted battery charger to control the power battery to charge.
4. The flexible charging system for hybrid electric vehicles according to claim 3, wherein in the relation curve of charging current-battery state of charge-battery temperature-charging time, when the battery operating temperature and the charging current are constant, the battery state of charge increases linearly with the charging time.
5. The hybrid electric vehicle flexible charging system according to claim 4, wherein the charging parameters include a battery state of charge, a battery temperature, a maximum cell voltage, and a charging voltage.
6. A charging method using the flexible charging system of claim 5, comprising the following steps in sequence:
a, generating a charging request signal;
b, establishing communication connection between a data acquisition unit of the flexible charging control module and a battery management system through a bus;
c, a mode signal acquisition module in the data acquisition unit establishes communication with the ECU, and the mode signal acquisition module acquires a charging mode from the ECU;
d, if the generator works in the energy feedback mode, the data acquisition unit acquires the real-time charging parameters of the generator controller on line through the battery management system; if the vehicle-mounted charger works in the parking charging mode, the data acquisition unit acquires real-time charging parameters of the vehicle-mounted charger on line through the battery management system;
e, the data analysis unit calls the flexible charging curve in the data storage unit through the central processing unit to judge whether the power battery needs to be charged;
if the power battery needs to be charged, the data acquisition unit inputs real-time charging parameters acquired through the battery management system;
g, detecting whether a historical flexible charging curve exists in the data storage unit by the central processing unit;
h, if the data storage unit stores a historical flexible charging curve, the central processing unit outputs a control signal, and the control data analysis unit compares the real-time charging parameter with the historical flexible charging curve and generates an optimal value of the charging parameter; if the historical flexible charging curve is not stored in the data storage unit, the central processing unit outputs a control signal, and the control data analysis unit calculates and generates a flexible charging curve according to the preset type of the battery and the ambient temperature and compares the real-time charging parameter with the flexible charging curve to generate the optimal value of the charging parameter;
the central processing unit receives the charging parameter optimal value generated by the data analysis unit, feeds the charging parameter optimal value back to the generator controller or the vehicle-mounted charger through the output control unit, and controls the generator or the charger to charge according to the charging parameter optimal value;
j, the data acquisition unit acquires real-time charging parameters, and if the real-time charging parameters are equal to the optimal values of the charging parameters calculated according to the flexible charging curve, the charging is finished; if the real-time charging parameter is not equal to the optimal value of the charging parameter, repeating the step h and the step i until the real-time charging parameter acquired by the data acquisition unit is equal to the optimal value of the charging parameter;
k, storing the charging parameters when the charging is finished in the data storage unit; the central processing unit calls the charging parameters at the end of charging and corrects the flexible charging curve through the data analysis unit, and the data storage unit stores the corrected flexible charging curve as a historical flexible charging curve;
the flexible charging curve is a relation curve of charging current-battery charge state-battery working temperature-charging time or a relation curve of charging voltage-battery charge state-battery working temperature-charging time; when the relation curve of charging current-battery charge state-battery working temperature-charging time is taken as a flexible charging curve, the battery charge state linearly increases along with the charging time when the battery working temperature and the charging current are constant.
7. The charging method of claim 6, wherein the real-time charging parameters comprise battery state of charge, battery temperature, cell peak voltage, and charging voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511007143.6A CN105429238B (en) | 2015-12-30 | 2015-12-30 | Flexible charging system and charging method for hybrid electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511007143.6A CN105429238B (en) | 2015-12-30 | 2015-12-30 | Flexible charging system and charging method for hybrid electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105429238A CN105429238A (en) | 2016-03-23 |
| CN105429238B true CN105429238B (en) | 2020-02-18 |
Family
ID=55507251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511007143.6A Active CN105429238B (en) | 2015-12-30 | 2015-12-30 | Flexible charging system and charging method for hybrid electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105429238B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571656A (en) * | 2016-09-13 | 2017-04-19 | 孙文涛 | Battery condition monitoring and charging management system for electric vehicle charging device |
| CN106696739B (en) * | 2016-12-29 | 2019-09-06 | 西安特锐德智能充电科技有限公司 | A kind of charging method and charging unit of electric car |
| CN107697062A (en) * | 2017-09-28 | 2018-02-16 | 中国第汽车股份有限公司 | Energy management control method |
| CN108061865A (en) * | 2017-12-26 | 2018-05-22 | 衢州量智科技有限公司 | The bearing calibration of electric automobile lithium battery capacity and means for correcting |
| CN110031764B (en) * | 2019-04-03 | 2022-03-18 | 广州小鹏汽车科技有限公司 | Method and device for estimating target charging quantity of power battery and corresponding vehicle |
| CN110829543B (en) * | 2019-11-26 | 2021-05-18 | 桑顿新能源科技有限公司 | Charging current dynamic adjustment method and device and new energy automobile |
| CN114649596A (en) * | 2020-12-18 | 2022-06-21 | 北京万集科技股份有限公司 | Charging control method, charging control device, charging control system, storage medium, and electronic device |
| CN113442788B (en) * | 2021-06-29 | 2023-02-21 | 中国第一汽车股份有限公司 | Electric vehicle charging control method and system and storage medium |
| CN114161994A (en) * | 2021-12-06 | 2022-03-11 | 国网天津市电力公司 | Battery life improving method, system and device based on pure electric vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552361A (en) * | 2009-05-12 | 2009-10-07 | 奇瑞汽车股份有限公司 | Electric automobile power battery charging maintenance method and device |
| CN101783524A (en) * | 2009-12-25 | 2010-07-21 | 奇瑞汽车股份有限公司 | Vehicle-mounted lithium battery charger and charging control method thereof |
| CN102411128B (en) * | 2011-07-25 | 2014-03-26 | 华北电力大学（保定） | Virtual battery management system and application method thereof |
| CN103187767B (en) * | 2011-12-31 | 2015-04-22 | 比亚迪股份有限公司 | Electric automobile and charging system used for electric automobile |
| CN104092272B (en) * | 2014-07-24 | 2016-03-02 | 四川慧盈科技有限责任公司 | The Optimal Configuration Method of a kind of charging system for electric automobile and power distribution network |
| CN104362404B (en) * | 2014-09-25 | 2017-02-15 | 天津三星电子有限公司 | Charger and charging method |
-
2015
- 2015-12-30 CN CN201511007143.6A patent/CN105429238B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105429238A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105429238B (en) | Flexible charging system and charging method for hybrid electric vehicle | |
| US11021067B2 (en) | Electrically powered vehicle and control method for electrically powered vehicle | |
| JP5868499B2 (en) | Battery control device | |
| US9425647B2 (en) | Charging-control apparatus and charging-control method | |
| US10527656B2 (en) | Method for preventing battery overcharge and overdischarge and increasing battery efficiency | |
| US8148951B2 (en) | Battery controlling apparatus for a vehicle | |
| EP3170693A1 (en) | Battery system with temperature raising | |
| EP3410558A1 (en) | Battery control device | |
| US20170274794A1 (en) | Cell status estimation device and power supply device | |
| US10574063B2 (en) | Method and system for balancing a battery pack | |
| CN110323793B (en) | Method and device for balancing automobile and power battery pack | |
| CN108583305B (en) | Charging precision diagnosis method, device and chip | |
| US11135935B2 (en) | Vehicle charging system | |
| JP5108076B2 (en) | Vehicle charging device | |
| KR20010036653A (en) | Controlling method for battery charge of electric vehicle | |
| CN105745811A (en) | System and method for correcting SOC of battery | |
| CN111301219A (en) | Electric vehicle battery control method, system, device and readable storage medium | |
| CN110573370A (en) | Apparatus and method for diagnosing battery deterioration | |
| KR20170010772A (en) | Method for battery management and battery management system | |
| US11691531B2 (en) | Adaptation of charge current limits for a rechargeable energy storage system | |
| US20230173924A1 (en) | Storage battery control apparatus | |
| KR20190066677A (en) | Battery charging system and controlling method | |
| JP7253958B2 (en) | BATTERY CONTROL DEVICE AND BATTERY CONTROL METHOD | |
| KR102020044B1 (en) | Battery charging system, and method for controlling maximum capacity charging in battery module using the same | |
| US9466990B2 (en) | Method for enhancing a battery management system, battery management system, battery system and motor vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 266000 Shandong Province, Qingdao city Laoshan District Songling Road No. 336 Applicant after: Telai New Energy Co.,Ltd. Applicant after: QINGDAO TGOOD ELECTRIC Co.,Ltd. Address before: 266104 Shandong Province, Qingdao city Laoshan District Songling Road No. 336 Applicant before: QINGDAO TELD NEW ENERGY Co.,Ltd. Applicant before: QINGDAO TGOOD ELECTRIC Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191213 Address after: Room 1001, 10 / F, No. 336, Songling Road, Laoshan District, Qingdao City, Shandong Province Applicant after: Qingdao teltel New Energy Technology Co.,Ltd. Address before: 266000 Shandong Province, Qingdao city Laoshan District Songling Road No. 336 Applicant before: Telai New Energy Co.,Ltd. Applicant before: QINGDAO TGOOD ELECTRIC Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |