CN112721660B - Energy supply management method and device for double-battery range-extending type electric automobile - Google Patents
Energy supply management method and device for double-battery range-extending type electric automobile Download PDFInfo
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- CN112721660B CN112721660B CN202110101807.4A CN202110101807A CN112721660B CN 112721660 B CN112721660 B CN 112721660B CN 202110101807 A CN202110101807 A CN 202110101807A CN 112721660 B CN112721660 B CN 112721660B
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- 238000007726 management method Methods 0.000 title claims description 30
- 239000004606 Fillers/Extenders Substances 0.000 claims abstract description 58
- 239000000446 fuel Substances 0.000 claims abstract description 21
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 9
- 238000004134 energy conservation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
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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
- 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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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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
- 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
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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
Abstract
A method and a device for managing energy supply of a double-battery extended-range electric automobile comprise the following steps: collecting SOC values of a first battery and a second battery; judging to obtain a first energy supply battery and a second energy supply battery; providing a plurality of power threshold ranges and a plurality of drive commands; acquiring real-time required power of the electric automobile; judging the power threshold range of the real-time required power to obtain a corresponding driving instruction; controlling the first battery, the second battery and the range extender to supply energy according to the driving instruction; wherein the plurality of power threshold ranges comprises a first power threshold range, the first power threshold range is greater than zero and less than or equal to the peak power of the first energy supply battery; when the first power threshold range is reached, the first energy supply battery supplies energy to the electric automobile, and the range extender charges the second energy supply battery with the optimal fuel point power. The SOC of the two batteries is always kept at a higher level, the service life of the batteries is prolonged, meanwhile, the range extender supplies energy with better fuel efficiency power for a long time, and the fuel economy is good.
Description
Technical Field
The invention relates to the field of hybrid electric vehicles, in particular to a power supply management method and device for a double-battery range-extending type electric vehicle.
Background
Compared with the traditional automobile, the hybrid electric vehicle fully absorbs the greatest advantages in an electric power/thermal power system, greatly reduces the oil consumption and pollutant emission of the vehicle, can ensure the same performance and advantages, and wins energy conservation and emission. The hybrid electric vehicle achieves the purposes of improving fuel economy and reducing emission on the basis of the prior art, thereby having great development prospect.
Generally, a dual-battery range-extending electric vehicle starts a range extender based on the SOC (State of charge) of a battery, when two batteries are discharged until the SOC is lower than a lower threshold value, the range extender is started to supply power, and cannot emit larger power to the outside, the range extender needs to work with larger power to meet driving requirements and supplement energy for the battery, and when the range extender works at a larger power point, the oil consumption is relatively larger, which is not favorable for energy conservation and emission reduction.
Disclosure of Invention
Therefore, it is necessary to provide a method and a device for managing energy supply of a dual-battery extended-range electric vehicle, which are used for maintaining the SOC of two batteries at a higher level all the time on the premise of ensuring that the dynamic performance of the entire vehicle is not affected, so as to prolong the service life of the batteries, and meanwhile, the range extender supplies energy with better fuel efficiency and power for a long time, so that the fuel economy is good.
An energy supply management method of a dual-battery range-extended electric vehicle, wherein the electric vehicle comprises a first battery, a second battery and a range extender, and the energy supply management method comprises the following steps:
collecting SOC values of the first battery and the second battery;
judging to obtain a first energy supply battery and a second energy supply battery;
providing a plurality of power threshold ranges and a plurality of driving instructions, wherein the power threshold ranges and the driving instructions are in one-to-one correspondence;
acquiring real-time required power of the electric automobile;
judging the power threshold range in which the real-time required power is positioned, so as to obtain the corresponding driving instruction;
controlling the first battery, the second battery and the range extender to supply energy according to the driving command;
the first energy supply battery is the first battery with the high SOC value, and the second energy supply battery is the second battery with the low SOC value;
the plurality of power threshold ranges comprises a first power threshold range that is greater than zero while being less than or equal to a peak power of the first energy supply battery; and
the step of controlling the energy supply of the first battery, the second battery and the range extender according to the driving instruction comprises the following steps: when real-time demand power is in when first power threshold value scope, first energy supply battery does the electric automobile energy supply, simultaneously, the range extender uses optimum fuel point power as the second energy supply battery charges.
In one embodiment, the real-time SOC values of the first battery and the second battery are collected every preset time period to re-determine that the first energy supply battery and the second energy supply battery are obtained.
In one embodiment, the power threshold ranges further include a second power threshold range, where the second power threshold range is greater than the peak power of the first energy supply battery and less than or equal to the sum of the peak power of the first energy supply battery and the optimal fuel consumption point power of the range extender;
the step of controlling the first battery, the second battery and the range extender to supply energy according to the driving instruction further comprises: when real-time demand power is in when the second power threshold value scope, increase journey ware and do with optimum oil consumption point power the electric automobile energy supply, first energy supply battery provides remaining required power, second energy supply battery does not supply nor charge.
In one embodiment, the power threshold ranges further include a third power threshold range, where the third power threshold range is greater than the sum of the peak power of the first energy supply battery and the optimal fuel consumption point power of the range extender, and is less than or equal to the sum of the peak power of the first energy supply battery, the peak power of the second energy supply battery and the optimal fuel consumption point power of the range extender;
the step of controlling the first battery, the second battery and the range extender to supply energy according to the driving instruction further comprises: when real-time demand power is in when the third power threshold value scope, increase journey ware and do with optimum oil consumption point power the electric automobile energy supply, first energy supply battery with the second energy supply battery provides remaining required power.
In one embodiment, the first energy supply battery and the second energy supply battery are supplied with the same power.
In one embodiment, the first energy cell is powered at peak power and the second energy cell provides the remaining required power.
In one embodiment, the power threshold ranges further include a fourth power threshold range, where the fourth power threshold range is greater than a sum of the peak power of the first energy supply battery, the peak power of the second energy supply battery, and the optimal fuel consumption point power of the range extender;
the step of controlling the first battery, the second battery and the range extender to supply energy according to the driving instruction further comprises: when the real-time required power is in the fourth power threshold range, the first energy supply battery and the second energy supply battery are supplied with peak power to the electric automobile, and the range extender provides residual required power.
In one embodiment, the energy supply management method further includes:
when the electric automobile has no power demand, kinetic energy recovery is carried out on the first battery and the second battery.
In one embodiment, the battery for recovering the kinetic energy is determined according to the charging capacities, the SOC values and the internal resistances of the first battery and the second battery.
The utility model provides a dual cell increases form electric automobile's energy supply management device, electric automobile includes first battery, second battery and increases the journey ware, energy supply management device includes:
the collector is used for collecting SOC values of the first battery and the second battery and is also used for obtaining real-time required power of the electric automobile;
the device comprises a memory, a control unit and a processing unit, wherein the memory is used for storing a plurality of power threshold ranges and a plurality of driving instructions, and the power threshold ranges correspond to the driving instructions one to one;
the processor is respectively connected with the collector and the memory and used for calling the SOC values of the first battery and the second battery from the collector so as to judge and obtain a first energy supply battery and a second energy supply battery; the electric vehicle control device is also used for calling real-time required power of the electric vehicle from the collector, and calling a plurality of power threshold value ranges and a plurality of driving instructions from the memory so as to judge the power threshold value range where the real-time required power is located, and thus obtaining the corresponding driving instructions;
the controller is respectively connected with the processor, the first battery, the second battery and the range extender and is used for controlling the energy supply of the first battery, the second battery and the range extender according to the driving instruction sent by the processor;
the first energy supply battery is the first battery with the higher SOC value, and the second energy supply battery is the second battery with the lower SOC value;
the plurality of power threshold ranges comprises a first power threshold range that is greater than zero while being less than or equal to a peak power of the first energizing battery; and
when judging real-time demand power is in when first power threshold value scope, first energy supply battery does the electric automobile energy supply, simultaneously, the range extender uses optimum fuel point power as the second energy supply battery charges.
According to the energy supply management method and device for the double-battery range-extending type electric automobile, the first battery and the second battery work alternately, the SOC is always kept in a higher area, the service life of the batteries is prolonged, the range extender supplies energy with better fuel efficiency power for a long time, the fuel economy is good, and meanwhile, the range extender is in a single working point state, and the vibration and the noise of the whole automobile are smaller.
Drawings
FIG. 1 is a flow chart illustrating a method for managing power supplied to a dual battery extended range electric vehicle according to an embodiment;
FIG. 2 is a flow chart of a method for managing power supplied to a dual battery extended range electric vehicle in another embodiment;
FIG. 3 is a schematic diagram of an energy management device of a dual battery extended range electric vehicle according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a flowchart of an energy management method of a dual-battery extended-range electric vehicle in an embodiment, and as shown in fig. 1, the energy management method of the dual-battery extended-range electric vehicle includes a first battery, a second battery, and a range extender, and the energy management method includes:
s10, collecting SOC values of the first battery and the second battery;
s20, judging to obtain a first energy supply battery and a second energy supply battery;
s30, providing a plurality of power threshold value ranges and a plurality of driving instructions, wherein the power threshold value ranges correspond to the driving instructions one by one;
s40, acquiring the real-time required power of the electric automobile;
s50, judging the power threshold range where the real-time required power is located, and obtaining the corresponding driving instruction;
and S60, controlling the first battery, the second battery and the range extender to supply energy according to the driving instruction.
Specifically, the SOC values of the first battery are respectively acquired1And the SOC value SOC of the second battery2If SOC is1＜SOC2If the first battery is the second energy supply battery, the second battery is the first energy supply battery; if SOC1≥SOC2And if the first battery is the first energy supply battery, the second battery is the second energy supply battery.
In particular, the plurality of power threshold ranges may include a first power threshold range, the first power threshold range being (0, P)1max]Wherein P is1maxThe peak power of the first energy supply battery.
Further, the step S60 of controlling the first battery, the second battery and the range extender to supply power according to the driving command may include:
s61, when the real-time required power is in the first power threshold range, for example, when the electric automobile runs in an urban area, the first energy supply battery supplies energy to the electric automobile, and simultaneously, the range extender charges the second energy supply battery with the optimal fuel point power.
Above-mentioned double cell increases form electric automobile's energy supply management method first energy supply battery does in the time of the electric automobile energy supply, the increase journey ware uses optimum oil consumption point power to do second energy supply battery charges, has guaranteed first battery with the SOC of second battery remains throughout at higher level, has prolonged the life of battery, simultaneously, the fuel efficiency of increase journey ware is high, and whole car fuel economy is good, the increase journey ware is located single operating point state more, and whole car vibration is less with the noise.
In one embodiment, the real-time SOC values of the first battery and the second battery are collected every preset time period to re-determine that the first energy supply battery and the second energy supply battery are obtained.
FIG. 2 is a flowchart of a method for managing power supply of a dual-battery extended-range electric vehicle in another embodiment, as shown in FIG. 2In one embodiment, the plurality of power threshold ranges may further include a second power threshold range, the second power threshold range being (P)1max，P1max+PRopt]Wherein P isRoptThe method is characterized in that the optimal oil consumption point power of the range extender is provided, and specifically, when the range extender supplies energy with the optimal oil consumption point power, the fuel oil economy is optimal, and the efficiency is highest.
Further, the step S60 of controlling the first battery, the second battery and the range extender to supply power according to the driving command may further include:
s62, when real-time demand power is in when the second power threshold value scope, increase journey ware with optimum oil consumption point power for the electric automobile energy supply, first energy supply battery provides remaining required power, the second energy supply battery does not supply nor charge.
In one embodiment, the plurality of power threshold ranges further includes a third power threshold range, the third power threshold range being (P)1max+PRopt，P1max+P2max+PRopt]Wherein P is2maxPeak power of the first energizing battery.
Further, the step S60 of controlling the first battery, the second battery and the range extender to supply power according to the driving command may further include:
s63, when the real-time required power is in the third power threshold range, the range extender uses the power of the optimal oil consumption point to supply energy to the electric automobile, and the first energy supply battery and the second energy supply battery supply the residual required power.
In one embodiment, the first energy supply battery and the second energy supply battery are powered by the same power.
In one embodiment, the first energy cell is powered at peak power and the second energy cell provides the remaining required power.
According to the energy supply management method of the double-battery extended-range electric automobile, the first battery and the second battery supply power at a lower discharge rate, so that the battery cost is greatly reduced; meanwhile, when the first battery, the second battery and the range extender are in the type selection, the range extender with smaller power and the battery with smaller discharge multiplying power can be selected, so that the cost of the whole vehicle is reduced; furthermore, the size of the range extender and the size of the battery are reduced, and the requirement on arrangement space and the design difficulty are reduced.
In one embodiment, the plurality of power threshold ranges further includes a fourth power threshold range, the fourth power threshold range being (Pmax)1max+P2max+PRopt，Plim) Wherein P islimIs the theoretical maximum value of the real-time demand power.
Further, the step S60 of controlling the first battery, the second battery and the range extender to supply power according to the driving command may further include:
s64, when the real-time demand power is in the fourth power threshold range, the first energy supply battery with the second energy supply battery is with peak power for the electric automobile energy supply, the range extender provides the remaining required power.
In one embodiment, the energy supply management method may further include: when the electric automobile has no power demand, kinetic energy recovery is carried out on the first battery and the second battery.
Specifically, for example, when a driver releases an accelerator pedal or generates a braking request, the electric vehicle has no power demand, parameters of the first battery and the second battery can be comprehensively judged, one battery is selected as kinetic energy recovery, more energy is recovered as far as possible, and the minimum charge-discharge loss is ensured.
In one embodiment, the battery for recovering kinetic energy may be selected according to the charging capacities, SOC values and internal resistances of the first battery and the second battery.
An energy management device 100 of a dual-battery range-extended electric vehicle, the electric vehicle 10 comprising a first battery 200, a second battery 300 and a range extender 400, the energy management device 100 comprising:
the collector 110 is used for collecting the SOC values of the first battery and the second battery and also used for obtaining the real-time required power of the electric vehicle;
a memory 120 for storing a plurality of power threshold ranges and a plurality of driving commands, the power threshold ranges and the driving commands corresponding one to one;
the processor 130 is connected to the collector 110 and the memory 120, and is configured to retrieve the SOC values of the first battery 200 and the second battery 300 from the collector 110, so as to determine to obtain a first energy supply battery and a second energy supply battery; the electric vehicle driving power management system is further configured to retrieve real-time required power of the electric vehicle 10 from the collector 110, retrieve a plurality of power threshold ranges and a plurality of driving instructions from the memory 120, so as to determine the power threshold range where the real-time required power is located, and thus obtain the corresponding driving instruction;
the controller 140 is connected to the processor 130, the first battery 200, the second battery 300 and the range extender 400, and is configured to control the first battery 200, the second battery 300 and the range extender 400 to supply power according to the driving instruction sent by the processor 130;
wherein, the first energy supply battery is the first battery 200 with the higher SOC value and the second energy supply battery is the second battery with the lower SOC value among the first battery 200 and the second battery 300;
the plurality of power threshold ranges comprises a first power threshold range that is greater than zero while being less than or equal to a peak power of the first energy supply battery; and
when the real-time required power is within the first power threshold range, the first energy supply battery supplies energy to the electric vehicle 10, and meanwhile, the range extender 400 charges the second energy supply battery with the optimal fuel point power.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (9)
1. The energy supply management method of the double-battery range-extended electric automobile is characterized in that the electric automobile comprises a first battery, a second battery and a range extender, and the energy supply management method comprises the following steps:
collecting SOC values of the first battery and the second battery;
judging to obtain a first energy supply battery and a second energy supply battery;
providing a plurality of power threshold ranges and a plurality of driving instructions, wherein the power threshold ranges correspond to the driving instructions one by one;
acquiring real-time required power of the electric automobile;
judging the power threshold range in which the real-time required power is positioned, so as to obtain the corresponding driving instruction;
controlling the first battery, the second battery and the range extender to supply energy according to the driving command;
the first energy supply battery is the first battery with the higher SOC value, and the second energy supply battery is the second battery with the lower SOC value;
the plurality of power threshold ranges comprise a first power threshold range and a second power threshold range, the first power threshold range is greater than zero and less than or equal to the peak power of the first energy supply battery; the second power threshold range is larger than the peak power of the first energy supply battery, and is smaller than or equal to the sum of the peak power of the first energy supply battery and the optimal oil consumption point power of the range extender; and
the step of controlling the energy supply of the first battery, the second battery and the range extender according to the driving instruction comprises the following steps: when the real-time required power is within the first power threshold range, the first energy supply battery supplies energy to the electric automobile, and meanwhile, the range extender charges the second energy supply battery with optimal fuel point power; when real-time demand power is in when the second power threshold value scope, increase journey ware and do with optimum oil consumption point power the electric automobile energy supply, first energy supply battery provides surplus required power, the second energy supply battery does not supply nor charge.
2. The energy supply management method according to claim 1, wherein the real-time SOC values of the first battery and the second battery are collected every preset time period to re-determine that the first energy supply battery and the second energy supply battery are obtained.
3. The energy management method according to claim 1, wherein:
the power threshold ranges further include a third power threshold range, and the third power threshold range is greater than the sum of the peak power of the first energy supply battery and the optimal oil consumption point power of the range extender, and is smaller than or equal to the sum of the peak power of the first energy supply battery, the peak power of the second energy supply battery and the optimal oil consumption point power of the range extender;
the step of controlling the first battery, the second battery and the range extender to supply energy according to the driving command further comprises: when real-time demand power is in when the third power threshold value scope, increase journey ware and do with optimum oil consumption point power the electric automobile energy supply, first energy supply battery with the second energy supply battery provides remaining required power.
4. The energy supply management method according to claim 3, wherein the first energy supply battery and the second energy supply battery are supplied with equal power.
5. The energy supply management method according to claim 3, wherein the first energy supply battery supplies energy with peak power, and the second energy supply battery supplies the remaining required power.
6. The energy management method according to claim 1, wherein:
the power threshold ranges further include a fourth power threshold range, and the fourth power threshold range is greater than the sum of the peak power of the first energy supply battery, the peak power of the second energy supply battery and the optimal fuel consumption point power of the range extender;
the step of controlling the first battery, the second battery and the range extender to supply energy according to the driving command further comprises: when the real-time required power is in the fourth power threshold range, the first energy supply battery and the second energy supply battery supply energy to the electric automobile at peak power, and the range extender supplies the residual required power.
7. The energy management method of claim 1, further comprising:
when the electric automobile has no power demand, kinetic energy recovery is carried out on the first battery and the second battery.
8. The energy supply management method according to claim 7, wherein the battery for kinetic energy recovery is determined according to the charging capacities of the first battery and the second battery, the SOC values, and the internal resistances of the batteries.
9. The utility model provides a dual cell increases form electric automobile's energy supply management device which characterized in that, electric automobile includes first battery, second battery and increases the journey ware, energy supply management device includes:
the collector is used for collecting SOC values of the first battery and the second battery and is also used for obtaining real-time required power of the electric automobile;
the device comprises a memory, a control unit and a processing unit, wherein the memory is used for storing a plurality of power threshold ranges and a plurality of driving instructions, and the power threshold ranges correspond to the driving instructions one to one;
the processor is respectively connected with the collector and the memory and used for calling the SOC values of the first battery and the second battery from the collector so as to judge and obtain a first energy supply battery and a second energy supply battery; the electric vehicle control device is also used for calling real-time required power of the electric vehicle from the collector, and calling a plurality of power threshold value ranges and a plurality of driving instructions from the memory so as to judge the power threshold value range where the real-time required power is located, and thus obtaining the corresponding driving instructions;
the controller is respectively connected with the processor, the first battery, the second battery and the range extender and is used for controlling the energy supply of the first battery, the second battery and the range extender according to the driving instruction sent by the processor;
the first energy supply battery is the first battery with the higher SOC value, and the second energy supply battery is the second battery with the lower SOC value;
the plurality of power threshold ranges comprise a first power threshold range and a second power threshold range, the first power threshold range is greater than zero and less than or equal to the peak power of the first energy supply battery; the second power threshold range is larger than the peak power of the first energy supply battery, and is smaller than or equal to the sum of the peak power of the first energy supply battery and the optimal oil consumption point power of the range extender; and
when the real-time required power is determined to be in the first power threshold range, the first energy supply battery supplies energy to the electric automobile, and meanwhile, the range extender charges the second energy supply battery with optimal fuel point power; when judging real-time demand power is in when the second power threshold value scope, increase journey ware and do with optimum oil consumption point power the electric automobile energy supply, first energy supply battery provides surplus required power, the second energy supply battery does not supply nor charge.
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