CN106347358B - A kind of power source and power source method for handover control for electric vehicle - Google Patents
A kind of power source and power source method for handover control for electric vehicle Download PDFInfo
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- CN106347358B CN106347358B CN201610887274.6A CN201610887274A CN106347358B CN 106347358 B CN106347358 B CN 106347358B CN 201610887274 A CN201610887274 A CN 201610887274A CN 106347358 B CN106347358 B CN 106347358B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007600 charging Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 13
- 206010017577 Gait disturbance Diseases 0.000 claims description 6
- 230000001052 transient effect Effects 0.000 claims description 3
- 208000032953 Device battery issue Diseases 0.000 claims description 2
- 230000000977 initiatory effect Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 17
- 230000001133 acceleration Effects 0.000 description 15
- 230000008859 change Effects 0.000 description 7
- 238000011217 control strategy Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000009194 climbing Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/24—Energy storage means
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention provides a kind of power source for electric vehicle and power source method for handover control, belong to electric vehicle energy management and control field.The system includes: power battery, auxiliary energy device and controller, controller from multiple drive modes for selecting any work to control power battery and auxiliary energy device, wherein, multiple drive modes include: the first drive mode and the second drive mode, controller is configured to select the second drive mode when the remaining capacity of power battery is no more than a preset calibrations value, until the remaining capacity of power battery is increased to not less than a maximum preset value；The first drive mode is selected when the remaining capacity of power battery is not less than maximum preset value, until the remaining capacity of power battery is reduced to not higher than preset calibrations value；Wherein, maximum preset value is greater than preset calibrations value.The scheme of the application, extends battery life, reduces oil consumption, improves energy-efficient performance.
Description
Technical field
The present invention relates to electric vehicle energy management and control fields, more particularly to a kind of power for electric vehicle
Source and power source method for handover control.
Background technique
In order to promote the duration performance of electric vehicle, the function that can increase continual mileage is installed in extended-range electric vehicle
Rate follower.Power follower includes engine and generator, and power follower can not only give power battery charging, Er Qieneng
Enough directly drive traction electric machine.For example, fuel battery engines, internal combustion engine etc..The continuation of the journey of power follower increase electric vehicle
The principle of performance is: when power battery electricity abundance, automobile is travelled with electric-only mode, when accumulator electric-quantity deficiency, function
Rate follower is started to work, and to power battery charging or traction electric machine is directly driven, to greatly improve the traveling of electric car
Mileage.
Power follower in the prior art, the control strategy of energy source are using power follower as main energetic
Source, power battery is as secondary backup energy source.Fig. 1 shows the control between power follower and power battery in the prior art
Make tactful schematic diagram.As seen from Figure 1, when battery capacity drops to calibration value, engine in startup power follower with
Driving motor stops battery discharge with driving motor, charges the battery simultaneously.Although this kind of control strategy has battery capacity
Small, light-weight, the advantages that battery charging and discharging frequency is low, energy loss is small and the service life is long, still, due to once when under battery capacity
When dropping to certain value, just only with power follower as primary energy source, so that this kind of control strategy oil consumption is higher and saves
Energy performance is poor.
Summary of the invention
It is an object of the present invention to provide a kind of power source for electric vehicle, to solve electricity in the prior art
The pond service life is short, as mainly use power follower as oil consumption caused by energy source high and energy saving difference etc. problem.
The present invention provides a kind of power sources for electric vehicle, comprising:
Power battery, for driving the traction electric machine of the electric vehicle as main energy source output power；
Auxiliary energy device, for selectively driving the institute of the electric vehicle as auxiliary energy source output power
State traction electric machine and/or the charging to the power battery；
Controller any controls the power battery and the auxiliary energy for selecting from multiple drive modes
The work of device, wherein the multiple drive modes include:
First drive mode, wherein power battery work is to be operated alone the traction electric machine；With
Second drive mode, wherein auxiliary energy device work to be to be operated alone the traction electric machine, and to described
Power battery charging；
Wherein, the controller is configured to: being selected when the remaining capacity of the power battery is not more than a preset calibrations value
Second drive mode is selected, until the remaining capacity of the power battery is increased to not less than a maximum preset value；When described
The remaining capacity of power battery selects first drive mode when being not less than the maximum preset value, until the power battery
Remaining capacity be reduced to not higher than the preset calibrations value；Wherein, the maximum preset value is greater than the preset calibrations value.
Further, in first drive mode, the auxiliary energy device is deactivated.
Further, in second drive mode, the power battery is deactivated to stop output power.
Further, the remaining capacity of the power battery is indicated with SOC value；The auxiliary energy device follows for power
Device.
Further, the controller is configured to control the drive mode in first drive mode and described second
Alternately switched between drive mode.
Further, the multiple drive modes further include:
Third drive mode, wherein the power battery and the equal output power of auxiliary energy device come while driving institute
State traction electric machine；
Wherein, the controller is configured in current drive mode be first drive mode or the second driving mould
The third drive mode is selected when being unable to satisfy the transient dynamics demand of the electric vehicle when formula, and in the electric vehicle
Transient dynamics demand corresponding when falling after rise be restored to former first drive mode or the second drive mode.
Further, the controller is configured to be reduced in the remaining capacity of the power battery default not higher than minimum
Battery failures are determined when value, and further determine whether to select second drive mode,
If not allowing, enter limping mode or car-parking model；
If allowing, second drive mode is selected.
Further, the maximum preset value indicates that power battery lies substantially in fully charged state；
The minimum preset value expression power battery, which is lain substantially in, does not have electricity condition；
The preset calibrations value is between maximum preset value and minimum preset value and close to minimum preset value.
Further, the maximum preset value is 80-100%；
The minimum preset value is 15-18%；
The preset calibrations value is 18-25%.
Particularly, the present invention provides a kind of power source method for handover control, include the following steps:
Power battery is driven to the traction electric machine of the electric vehicle as main energy source output power；
Auxiliary energy device is selectively driven described in the electric vehicle as auxiliary energy source output power
Traction electric machine and/or charging to the power battery；
Any work to control the power battery and the auxiliary energy device is selected from multiple drive modes,
Wherein, the multiple drive modes include:
First drive mode, wherein power battery work is to be operated alone the traction electric machine；With
Second drive mode, wherein auxiliary energy device work to be to be operated alone the traction electric machine, and to described
Power battery charging；
Wherein, the second driving mould is selected when the remaining capacity of the power battery is not more than a preset calibrations value
Formula, until the remaining capacity of the power battery is increased to not less than a maximum preset value；When the residue electricity of the power battery
First drive mode is selected when amount is not less than the maximum preset value, until the remaining capacity of the power battery is reduced to
Not higher than the preset calibrations value；Wherein, the maximum preset value is greater than the preset calibrations value.
The solution of the present invention, auxiliary energy device can not only charge the battery, additionally it is possible to which direct-driving motor, this is this
Application can select the premise of any energy source.Compared with prior art, the energy source of the application can be in power battery and auxiliary
It helps between energy source and is selected.The frequency of use in power battery and auxiliary energy source is greatly lowered as a result, so that electric
The pond service life extends, while reducing oil consumption, improves energy-efficient performance.Further, the maximum preset value and most in the present invention
Small preset value is not provided as the limiting value that power battery is capable of charge and discharge, so that the state-of-charge of power battery is maintained at rule
In fixed range, avoid battery charge state too high or too low to improve the cycle life of battery.
Scheme according to the invention, due to setting preset calibrations value, so that the selection course between different driving mode
It is more steady, it is not in the situation of dynamic property deficiency or the change bring sense of discomfort due to drive mode.Further, since increasing
Add third drive mode, so that for example suddenly accelerating or climbing in special operation condition to guarantee enough dynamic property under long slope.The present invention
Scheme also allow for fault condition, i.e., when the remaining capacity of power battery is reduced to not higher than minimum preset value, can sentence
Disconnected electric vehicle is in fault condition, at this point it is possible to include the fault code of battery system, combination failure according to vehicle components
Operating condition determines whether to enable the second drive mode, if not allowing, enters limping mode or car-parking model；If allowing,
Select second drive mode.This makes it possible to detect fault condition in time, guarantees the normal operation of electric vehicle.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the control strategy schematic diagram between power follower and power battery in the prior art；
Fig. 2 is the general structural block diagram of the power source according to an embodiment of the invention for electric vehicle；
Fig. 3 is the driving principle schematic diagram of the first drive mode according to an embodiment of the invention；
Fig. 4 is the driving principle schematic diagram of the second drive mode according to an embodiment of the invention；
Fig. 5 is the control strategy schematic diagram switched between different driving mode according to an embodiment of the invention；
Fig. 6 is the driving principle schematic diagram of third drive mode according to an embodiment of the invention；
Fig. 7 is the flow diagram of power source method for handover control according to an embodiment of the invention；
Fig. 8 is the flow diagram of power source method for handover control according to another embodiment of the present invention.
Specific embodiment
Fig. 2 is the general structural block diagram of the power source 100 for electric vehicle according to an embodiment of the invention.Such as figure
Shown in 2,100 generality of power source for electric vehicle may include the battery control device 110 being arranged in electric vehicle,
Motor control assembly 120, auxiliary energy device 130 and controller 140.Battery control device 110 may include power battery 11
With the power battery controller 12 for controlling the charging of power battery 11 and/or electric discharge, power battery 11 and power battery control
Device 12 is electrically connected.Motor control assembly 120 may include traction electric machine 21 for driving wheel 170 and for turning direct current
It is changed to the electric machine controller 22 of alternating current, traction electric machine 21 and electric machine controller 22 are electrically connected.Auxiliary energy device 130 includes setting
Set the engine 31 in electric vehicle, generator 32 and the rectifier 33 for converting alternating current to direct current, engine
31 are connected with generator 32, and generator 32 is electrically connected with rectifier 33.Controller 140 passes through CAN bus and rectifier respectively
33, electric machine controller 22 and power battery controller 12 are electrically connected.It is appreciated that in order to detect the acceleration of electric vehicle and work as
The gradient of preceding road, which can also include acceleration transducer 160 and Slope Transducer
150, acceleration transducer 160 and Slope Transducer 150 are electrically connected with controller 140 respectively.Auxiliary energy device 130 can be straight
Driving traction electric machine 21 is connect, can also be charged to power battery 11.In one embodiment, auxiliary energy device 130 can be
Power follower.In other embodiments, auxiliary energy device 130, which is also possible to other, to charge to power battery 11, together
When can directly drive the energy source means of traction electric machine 21.Energy is used as using auxiliary energy device 130 and power battery 11
Source, can be few as far as possible use power battery 11, to reduce the cost of entire energy supplyystem.
In order to which power battery 11 and auxiliary energy device 130 are chosen one as energy source, in one embodiment, the present invention
Drive mode may include the first drive mode and the second drive mode in scheme.Fig. 3 shows according to this embodiment first
The driving principle schematic diagram of drive mode, as shown in figure 3, under the first drive mode, by power battery 11 as energy source with
Drive the traction electric machine 21.Fig. 4 shows the driving principle schematic diagram of the second drive mode according to this embodiment, such as Fig. 4
It is shown, under the second drive mode, by auxiliary energy device 130 as auxiliary energy source to drive the traction electric machine 21, and
It powers to the power battery 11.Wherein, auxiliary energy device 130 can be with variety of priority driven traction electric machine 21, then to power battery
11 power supplies.Controller 140 is configured to the second driving of selection when the remaining capacity of power battery 11 is no more than a preset calibrations value
Mode, until the remaining capacity of power battery 11 is increased to not less than a maximum preset value；When the remaining capacity of power battery 11
The first drive mode is selected when not less than maximum preset value, until the remaining capacity of power battery 11 is reduced to not higher than pre- bidding
Definite value；Wherein, maximum preset value is greater than preset calibrations value.When it is implemented, maximum preset value is selected as appointing in 80-100%
It anticipates a percentage, preset calibrations value is selected as any one percentage in 18-25%.Remaining capacity can use SOC value table
Show, but not limited to this." SOC " described herein is the abbreviation of " State of Charge ", indicates state-of-charge,
It can be appreciated that battery electric quantity state.The scheme of the application is the driving energy of vehicle in the case where battery capacity abundance
Amount source is provided by power battery 11, and when battery capacity drops to certain value, the driving energy source of vehicle is by auxiliary energy device
130 provide, and when vehicle is in special operation condition and for example climbs long slope and/or anxious acceleration, the driving energy source of vehicle is by power battery
11 and auxiliary energy device 130 jointly provide.Due to auxiliary energy device 130 while driving traction electric machine 21 also to power
Battery 11 charges, and the electricity of power battery 11 has a charging process from low to high as a result, while once using power electric
Pond 11, then the electricity of power battery 11 has a discharge process from high to low again, and realization is cut between different driving mode
Change energy source.
Fig. 5 is the control strategy schematic diagram switched between different driving mode according to an embodiment of the invention.Such as Fig. 5
Shown, controller 140 is configured to the variation according to the remaining capacity of power battery 11 so that drive mode is in the first drive mode
And second alternately switched between drive mode.It is higher than minimum preset value in the SOC value of power battery 11 and lower than calibration
When value, controller 140 issues enabled instruction to engine 31.When engine 31 starts, that is, current drive mode is the second driving mould
Formula.Under normal conditions, electric vehicle further includes energy management control device, for detecting the SOC value of the power battery 11, and
The SOC value is handled, is instructed with being issued to the controller 140.Therefore, engine 31 receives the finger for starting starting
The process of order is: energy management control device detects that the SOC value of power battery 11 is higher than minimum preset value and lower than calibration value
When, 31 enabled instruction of engine is sent to engine 31 by controller 140, engine 31 once starts, then power battery 11
It will deactivate automatically.Switching time i.e. when being switched to the second drive mode from the first drive mode is shorter, so that switching
Journey is more gentle, avoids the case where being short of power or the switching bring sense of discomfort due to drive mode.Further
Ground, maximum preset value and minimum preset value in the present invention are not provided as the limiting value that power battery 11 is capable of charge and discharge,
So that power battery 11 state-of-charge keep within the limits prescribed, avoid 11 state-of-charge of power battery too high or too low with
Improve the cycle life of battery.
The solution of the present invention can not only give power battery due to being used as auxiliary energy source using auxiliary energy device 130
11 chargings, additionally it is possible to directly drive traction electric machine 21, this is the premise that the application can select any energy source.With the prior art
It compares, the energy source of the application can alternately be switched between power battery 11 and auxiliary energy device 130.As a result,
The frequency of use of power battery 11 and auxiliary energy device 130 is greatly lowered, so that 11 service life of power battery extends, together
When reduce oil consumption, improve energy-efficient performance.
In vehicle travel process, the unavoidable some special operation conditions of appearance for example climb long slope and/or anxious acceleration, therefore,
In order to meet the dynamic property of this special operation condition, drive mode can also include third drive mode.Fig. 6 is shown according to the reality
The driving principle schematic diagram of the third drive mode of example is applied, as shown in fig. 6, under third drive mode, by the power battery
11 and the auxiliary energy device 130 as energy source to drive traction electric machine 21.It should be noted that being the in drive mode
It is unable to satisfy the operating condition when power demand of vehicle under one drive mode or the second drive mode, can be used as special operation condition.
Special operation condition may include climbing long slope operating condition and anxious accelerating mode.Climbing long slope operating condition is to be expert at when Slope Transducer 150 detects
The gradient of road is greater than default value of slope and is greater than the time of default value of slope when being more than preset time or acceleration on into direction
Sensor 160 detects that the rate of acceleration change of electric vehicle is greater than the set value and when the rate of acceleration change is greater than the set value
Between be more than certain time operating condition.Anxious accelerating mode is when acceleration transducer 160 detects the acceleration change of electric vehicle
Operating condition when rate is greater than the set value.Wherein, Slope Transducer 150 is for detecting each moment in the direction of travel of electric vehicle
When road grade, and the Gradient is compared with default value of slope, when the Gradient is greater than default value of slope,
Start to calculate the time that the Gradient is greater than default value of slope.Acceleration transducer 160 is for detecting each moment electric vehicle
Acceleration, and calculate the rate of acceleration change at each moment, which be compared with setting value, when adding
When percentage speed variation is greater than the set value, the time that rate of acceleration change is greater than the set value is calculated.In addition, controller 140 is configured to
When special operation condition is eliminated, drive mode is switched to by third drive mode and climbs long slope operating condition and/or anxious accelerating mode appearance
Drive mode before.
Fig. 5 shows the principle for switching energy source between different driving mode according to the electric vehicle of one embodiment
Figure also shows the schematic diagram for switching drive mode under special operation condition.As shown in figure 5, in T=0, power battery 11
Electricity is at maximum preset value, in 0-t2In time, drive mode is the first drive mode, and the electricity of power battery 11 is gradually
Reduce, in T=t1When, the electricity of power battery 11 is at preset calibration value, and engine 31 is in state to be launched, works as T
=t2When, the electricity of power battery 11 is between calibration value and minimum preset value, and engine 31 starts to start, in t2-t3Time
Interior, drive mode is the second drive mode, starts to carry out power source as a result, between the first drive mode and the second drive mode
Alternate cycles.I.e. in t3-t4And t5-t6In time, drive mode is the first drive mode, in t5-t6And t6-t7It is driven in time
Dynamic model formula is the second drive mode.Due in t7-t8Electric vehicle is in special operation condition in time, needs to meet the power of vehicle
Property, therefore, in t7-t8In time, drive mode is third drive mode, i.e., power battery 11 and auxiliary energy device 130 is same
Shi Zuowei energy source is to drive traction electric machine 21.Once special operation condition disappear, then drive mode become special operation condition occur before
Locating drive mode, i.e., in t8-t9In time, drive mode is the first drive mode.
In order to ensure the safety of electric vehicle traveling is needed when the SOC value of power battery 11 is less than minimum preset value
Check whether electric vehicle breaks down.This is because when the SOC value of power battery 11 reaches minimum value, auxiliary energy device
130 can all charge to power battery 11, under normal circumstances, be not in power battery 11 SOC value be less than it is minimum default
The case where value.The solution of the present invention, energy management control device are configured to be less than minimum preset value in the SOC value of power battery 11
When determine that electric vehicle is in fault condition, and include the fault code of battery system according to each components of vehicle, in conjunction with therefore
Barrier operating condition determines whether that auxiliary energy device 130 is in starting state.If not allowing, it is transmitted into controller 140
The instruction of limping mode or car-parking model, waits for rescue.If allowing, is sent to controller 140 and drive mode is switched to the
The instruction of two drive modes illustrates that electric vehicle is in nominal situation, auxiliary energy device 130 can drive vehicle driving and to
Power battery 11 charges.
Particularly, the present invention also provides a kind of power source method for handover control, include the following steps:
Power battery is driven to the traction electric machine of electric vehicle as main energy source output power；
Auxiliary energy device is selectively driven to the traction electric machine of electric vehicle as auxiliary energy source output power
And/or the charging to power battery；
Any work to control power battery and auxiliary energy device is selected from multiple drive modes, wherein more
Planting drive mode includes:
First drive mode, wherein power battery work is to be operated alone traction electric machine；With
Second drive mode, wherein the work of auxiliary energy device to be to be operated alone traction electric machine, and to power battery charging；
Wherein, the second drive mode is selected when the remaining capacity of power battery is not more than a preset calibrations value, until dynamic
The remaining capacity of power battery is increased to not less than a maximum preset value；When the remaining capacity of power battery is not less than maximum preset value
When select the first drive mode, until the remaining capacity of power battery is reduced to not higher than preset calibrations value；Wherein, maximum preset
Value is greater than preset calibrations value.
Fig. 7 shows the flow diagram of power source method for handover control according to an embodiment of the invention.Such as Fig. 7 institute
Show, this method may include steps of:
S110, traction electric machine is driven under the first drive mode when the SOC value of power battery is not less than preset calibrations value；
S120, when the SOC value of power battery is reduced to no more than preset calibrations value, by drive mode by first driving mould
Formula switches to the second drive mode, to drive traction electric machine；
S130, when the SOC value of power battery is increased to not less than maximum preset value, by drive mode by the second driving mould
Formula switches to the first drive mode, to drive traction electric machine；
S140, step S110 and S130 are repeated.
Wherein, drive mode is alternately switched between the first drive mode and the second drive mode；
Preset calibrations value is selected as any one percentage in 18-25%, and maximum preset value is selected as in 80-100%
Any percentage.
Fig. 8 shows the flow diagram of the power source method for handover control of another embodiment of the present invention.When it is implemented,
It can be potentially encountered fault condition, in another embodiment, as shown in figure 8, power source method for handover control of the invention can be with
Include the following steps:
S210, when the SOC value of power battery is not less than preset calibrations value, i.e., SOC >=calibration value when (default SOC at this time
≤ max), traction electric machine is driven under the first drive mode；
S220, when the SOC value of power battery deteriorates to less than preset calibrations value, i.e., SOC < calibration value when, mould will be driven
Formula switches to the second drive mode by the first drive mode, to drive traction electric machine；
S230, when the SOC value of power battery is increased to not less than maximum preset value max, i.e. when SOC >=max, will drive
Mode switches to the first drive mode by the second drive mode, to drive traction electric machine；
S240, when the SOC value of power battery is dropped to not higher than minimum preset value min, i.e. when SOC≤min, check electric
Whether motor-car is in fault condition,
If being in fault condition, then enters limping mode or car-parking model, wait for rescue；
If not being in fault condition, then the second drive mode is selected.
Wherein, when the operating condition that do not break down when fault condition is eliminated or, this method also repeats step S210 and S230.
Further, when it is implemented, can be potentially encountered special operation condition for example climbs long slope and/or anxious acceleration, at another
In embodiment, power source method for handover control of the invention be may include steps of:
S310, when the SOC value of power battery is not less than preset calibrations value, i.e., SOC >=calibration value when (default SOC at this time
≤ max), traction electric machine is driven under the first drive mode；
S320, when the SOC value of power battery deteriorates to less than preset calibrations value, i.e., SOC < calibration value when, mould will be driven
Formula switches to the second drive mode by the first drive mode, to drive traction electric machine；
S330, when being increased to not less than maximum preset value max, i.e. when SOC >=max, by drive mode by the second driving mould
Formula switches to the first drive mode, to drive traction electric machine；
S340, step S310 and S330 are repeated；
S350, when the moment power demand of vehicle is greater than the generated energy of auxiliary energy device, then by drive mode by the
Two drive modes or the first drive mode switch to third drive mode, with driving motor.
Other features of the method for the present invention and the feature of above system correspond, and details are not described herein.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (8)
1. a kind of power source for electric vehicle, comprising:
Power battery, for driving the traction electric machine of the electric vehicle as main energy source output power；
Auxiliary energy device is led for selectively being driven described in the electric vehicle as auxiliary energy source output power
Draw motor and/or the charging to the power battery, the auxiliary energy device is power follower；
Controller any controls the power battery and the auxiliary energy device for selecting from multiple drive modes
Work, wherein the multiple drive modes include:
First drive mode, wherein power battery work is to be operated alone the traction electric machine；With
Second drive mode, wherein auxiliary energy device work to be to be operated alone the traction electric machine, and to the power
Battery charging；
Wherein, the controller is configured to: selecting institute when the remaining capacity of the power battery is not more than a preset calibrations value
The second drive mode is stated, until the remaining capacity of the power battery is increased to not less than a maximum preset value；When the power
The remaining capacity of battery selects first drive mode when being not less than the maximum preset value, until the power battery is surplus
Remaining electricity is reduced to not higher than the preset calibrations value；Wherein, the maximum preset value is greater than the preset calibrations value；
The controller is configured to determine battery when the remaining capacity of the power battery is reduced to not higher than minimum preset value
Failure, and further determine whether to select second drive mode,
If not allowing, enter limping mode or car-parking model；
If allowing, second drive mode is selected；
The maximum preset value indicates that power battery lies substantially in fully charged state；
The minimum preset value expression power battery, which is lain substantially in, does not have electricity condition；
The preset calibrations value is between maximum preset value and minimum preset value and close to minimum preset value；
Wherein, the auxiliary energy device is when the remaining capacity of the power battery reaches the preset calibrations value in wait open
Dynamic state just starts to start, and is deactivated when reaching maximum value when until reaching initiation value, wherein the initiation value is greater than
It is described minimum preset value and be less than the preset calibrations value.
2. power source according to claim 1, wherein in first drive mode, the auxiliary energy device quilt
It deactivates.
3. power source according to claim 1 or 2, wherein in second drive mode, the power battery is stopped
To stop output power.
4. power source according to claim 1 or 2, wherein the remaining capacity of the power battery is indicated with SOC value.
5. power source according to claim 4, wherein the controller is configured to control the drive mode described
Alternately switched between one drive mode and second drive mode.
6. according to claim 1, power source described in any one of 2 and 5, wherein the multiple drive modes further include:
Third drive mode, wherein the power battery and the equal output power of auxiliary energy device come while driving described lead
Draw motor；
Wherein, the controller is configured to when current drive mode is first drive mode or second drive mode
The third drive mode is selected when being unable to satisfy the transient dynamics demand of the electric vehicle, and in the wink of the electric vehicle
When power demand is corresponding when falling after rise is restored to former first drive mode or the second drive mode.
7. power source according to claim 1, wherein the maximum preset value is 80-100%；
The minimum preset value is 15-18%；
The preset calibrations value is 18-25%.
8. a kind of power source method for handover control, includes the following steps:
Power battery is driven to the traction electric machine of electric vehicle as main energy source output power；
Auxiliary energy device is selectively driven to the traction of the electric vehicle as auxiliary energy source output power
Motor and/or charging to the power battery, the auxiliary energy device are power follower；
Any work to control the power battery and the auxiliary energy device is selected from multiple drive modes,
In, the multiple drive modes include:
First drive mode, wherein power battery work is to be operated alone the traction electric machine；With
Second drive mode, wherein auxiliary energy device work to be to be operated alone the traction electric machine, and to the power
Battery charging；
Wherein, second drive mode is selected when the remaining capacity of the power battery is not more than a preset calibrations value, directly
Remaining capacity to the power battery is increased to not less than a maximum preset value；When the remaining capacity of the power battery is not low
First drive mode is selected when the maximum preset value, until the remaining capacity of the power battery is reduced to and is not higher than
The preset calibrations value；Wherein, the maximum preset value is greater than the preset calibrations value；
Battery failures are determined when the remaining capacity of the power battery is reduced to not higher than minimum preset value, and are further judged
Whether allow to select second drive mode,
If not allowing, enter limping mode or car-parking model；
If allowing, second drive mode is selected；
The maximum preset value indicates that power battery lies substantially in fully charged state；
The minimum preset value expression power battery, which is lain substantially in, does not have electricity condition；
The preset calibrations value is between maximum preset value and minimum preset value and close to minimum preset value；
Wherein, the auxiliary energy device is when the remaining capacity of the power battery reaches the preset calibrations value in wait open
Dynamic state just starts to start, and is deactivated when reaching maximum value when until reaching initiation value, wherein the initiation value is greater than
It is described minimum preset value and be less than the preset calibrations value.
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| CN106347145B (en) * | 2016-10-11 | 2018-12-25 | 浙江吉利新能源商用车有限公司 | For the power follower of electric vehicle and the control device and method of power battery |
| CN106541940B (en) * | 2016-10-11 | 2019-03-19 | 浙江吉利新能源商用车有限公司 | A kind of power source and power source selection method for electric vehicle |
| CN111152690B (en) * | 2018-11-08 | 2021-11-26 | 郑州宇通客车股份有限公司 | Energy control method and system for multi-power-supply time-varying characteristic of fuel cell vehicle |
| CN110254235A (en) * | 2019-05-31 | 2019-09-20 | 重庆金康动力新能源有限公司 | Automobile drive method, electric car, device, equipment and storage medium |
| JP7276208B2 (en) * | 2020-03-11 | 2023-05-18 | トヨタ自動車株式会社 | four wheel drive vehicle |
| CN114274842B (en) * | 2021-11-16 | 2024-04-05 | 爱驰汽车有限公司 | Electric automobile energy source control method and device, electric automobile and storage medium |
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