CN109760550A - A kind of electric automobile energy control method and system - Google Patents
A kind of electric automobile energy control method and system Download PDFInfo
- Publication number
- CN109760550A CN109760550A CN201910096725.8A CN201910096725A CN109760550A CN 109760550 A CN109760550 A CN 109760550A CN 201910096725 A CN201910096725 A CN 201910096725A CN 109760550 A CN109760550 A CN 109760550A
- Authority
- CN
- China
- Prior art keywords
- threshold value
- vehicle
- upper bound
- current
- power threshold
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000033764 rhythmic process Effects 0.000 abstract description 7
- 230000007704 transition Effects 0.000 abstract description 7
- 230000008451 emotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of electric automobile energy control method and systems, the currently practical operation power for calculating vehicle is more than the accumulative operation function amount that transfinites of current upper bound continuous power threshold value, and it further calculates the accumulative operation function amount that transfinites and accounts for the upper limit and can run the ratio of function amount, to determine the current permission Upper Bound Power threshold value of vehicle based on ratio and default delay attenuation coefficient, so as to according to the current actually available discharge power upper limit for allowing Upper Bound Power threshold value to control vehicle.The present invention is based on the current permission Upper Bound Power threshold values for the vehicle that function amount determines, when controlling the actually available discharge power upper limit of vehicle, the electric discharge function amount of battery pack can be considered in real time, rather than just the discharge time of battery pack, therefore the discharge capability of battery pack can be made to be discharged well, big step jump will not occur for the actual motion power of vehicle simultaneously, so that the power output for effectively reducing vehicle generates step evolution decaying, vehicle be avoided to generate shake even pause and transition in rhythm or melody sense.
Description
Technical field
The present invention relates to electric vehicle engineering fields, more specifically, be related to a kind of electric automobile energy control method and
System.
Background technique
Electric automobile energy control relates generally to the control of the limitation to battery pack discharge power, and electric car is in driving process
In, the operation power of vehicle cannot be more than the upper limit continuous power threshold value of battery pack for a long time, otherwise will lead to battery pack temperature rise
Too fast, temperature is excessively high, to influence the service life of battery pack, may also result in battery pack thermal runaway when serious and catches fire.
Currently, electric automobile energy control mostly uses the control method based on time restriction greatly, specifically: it presets
Continuous power threshold value, upper limit instantaneous power threshold value and vehicle are limited in the maximum continuous working period of upper limit instantaneous power threshold value,
Namely time threshold, wherein upper limit continuous power threshold value < upper limit instantaneous power threshold value.In time threshold, control vehicle with
Greater than upper limit continuous power threshold value and less than the operation Power operation of upper limit instantaneous power threshold value, when the runing time of vehicle is more than
When time threshold, then the operation power of vehicle is limited no more than upper limit continuous power threshold value.
The above-mentioned control method based on time restriction can be good at realizing the energy hole to vehicle.But it is this only
Using the time as the control mode for judging benchmark, reached just above upper limit continuous power threshold value and far away in vehicle actual motion power
When to upper limit instantaneous power threshold value, protection battery pack that can be excessive, so that the discharge capability of battery pack does not obtain maximum release；
Meanwhile after the runing time that the operation power of vehicle is more than upper limit continuous power threshold value reaches preset time threshold, it can control
The actual motion power of vehicle processed directly drops to upper limit continuous power threshold value from upper limit instantaneous power threshold value, it is thus possible to cause
The power output of vehicle generates step evolution decaying, so that vehicle is generated shake even pause and transition in rhythm or melody sense, to influence driver comfort.
Summary of the invention
In view of this, the present invention discloses a kind of electric automobile energy control method and system, so that the electric discharge energy of battery pack
Power is discharged well, while big step jump will not occur for the actual motion power of vehicle, to effectively reduce whole
The power output of vehicle generates step evolution decaying, avoids vehicle from generating shake even pause and transition in rhythm or melody emotion condition, improves driver comfort.
A kind of electric automobile energy control method, comprising:
Obtain the currently practical operation power of vehicle；
Judge whether the currently practical operation power is more than current upper bound continuous power threshold value；
If so, calculating the currently practical operation power is more than that transfiniting for the current upper bound continuous power threshold value is accumulative
Run function amount；
The accumulative operation function amount that transfinites described in calculating, which accounts for the upper limit, can run the ratio of function amount；
The current permission Upper Bound Power threshold value that vehicle is calculated based on the ratio and default delay attenuation coefficient, according to described
The current actually available discharge power upper limit for allowing Upper Bound Power threshold value to control vehicle.
Optionally, the current permission Upper Bound Power threshold that vehicle is calculated based on the ratio and default delay attenuation coefficient
Value is specifically included according to the current actually available discharge power upper limit for allowing Upper Bound Power threshold value to control vehicle:
The current permission Upper Bound Power threshold value of vehicle is calculated based on the ratio and the default delay attenuation coefficient,
Process are as follows:
In formula, PLmtFor the current permission Upper Bound Power threshold value, C is the ratio, and η is the default delay decaying system
Number, PInstFor current upper bound instantaneous power threshold value, PConstFor the current upper bound continuous power threshold value,Value range be
[0,1]；
As η=0, vehicle the currently practical operation power be more than the current upper bound continuous power threshold value after,
The currently practical operation power for directly controlling vehicle enters decling phase, the decling phase are as follows: controls the described of vehicle
Currently practical operation power directly drops to the current upper bound continuous power threshold value from the current upper bound instantaneous power threshold value；
As η=1, carry out except zero protection, and vehicle is forbidden to enter the decaying rank from the currently practical operation power
Section, until vehicle is in current upper bound instantaneous power threshold value runing time threshold value T againInst, the decling phase is entered back into,
The time threshold TInstAre as follows: maximum continuous working period of the vehicle in the current upper bound instantaneous power threshold value；
When η range is (0,1), vehicle is forbidden to enter the decling phase from the currently practical operation power, until
Vehicle runs η times of the time threshold T in the current upper bound instantaneous power threshold value againInst, enter back into the decaying rank
Section.
Optionally, the currently practical operation power for obtaining vehicle, specifically includes:
Obtain the current voltage and current flow of automobile bus；
Calculate the currently practical operation power of vehicle, process are as follows:
PActl=Upck×Ipck；
In formula, PActlFor the currently practical operation power, UpckFor the current voltage, IpckFor the current flow.
Optionally, described to calculate currently practical operation power the transfiniting more than the current upper bound continuous power threshold value
Accumulative operation function amount, specifically includes:
Transfinite the accumulative process for running function amount B described in calculating are as follows:
In formula, t is that the currently practical operation power of vehicle is more than the operation of the current upper bound continuous power threshold value
Time, PActlFor the currently practical operation power, PConstFor the current upper bound continuous power threshold value.
Optionally, the accumulative operation function amount that transfinites described in the calculating, which accounts for the upper limit, can run the ratio of function amount, specifically include:
Function amount A, process can be run by calculating the upper limit are as follows:
A=(PInst-PConst)×TInst；
In formula, PInstFor current upper bound instantaneous power threshold value, PConstFor the current upper bound continuous power threshold value, TInstFor
The maximum continuous working period of time threshold, specially vehicle in the current upper bound instantaneous power threshold value；
Calculate the ratio C, process are as follows:
A kind of electric automobile energy control system, comprising:
Acquiring unit, for obtaining the currently practical operation power of vehicle；
Judging unit, for judging whether the currently practical operation power is more than current upper bound continuous power threshold value；
First computing unit, for calculating the currently practical operation in the case where the judging unit is judged as YES
Power is more than the accumulative operation function amount that transfinites of the current upper bound continuous power threshold value；
Second computing unit, the ratio of function amount can be run by accounting for the upper limit for calculating the accumulative operation function amount that transfinites；
Control unit, for calculating the current permission Upper Bound Power of vehicle based on the ratio and default delay attenuation coefficient
Threshold value, according to the current actually available discharge power upper limit for allowing Upper Bound Power threshold value to control vehicle.
Optionally, described control unit is specifically used for:
The current permission Upper Bound Power threshold value of vehicle is calculated based on the ratio and the default delay attenuation coefficient,
Process are as follows:
In formula, PLmtFor the current permission Upper Bound Power threshold value, C is the ratio, and η is the default delay decaying system
Number, PInstFor current upper bound instantaneous power threshold value, PConstFor the current upper bound continuous power threshold value,Value range be
[0,1]；
As η=0, vehicle the currently practical operation power be more than the current upper bound continuous power threshold value after,
The currently practical operation power for directly controlling vehicle enters decling phase, the decling phase are as follows: controls the described of vehicle
Currently practical operation power directly drops to the current upper bound continuous power threshold value from the current upper bound instantaneous power threshold value；
As η=1, carry out except zero protection, and vehicle is forbidden to enter the decaying rank from the currently practical operation power
Section, until vehicle is in current upper bound instantaneous power threshold value runing time threshold value T againInst, the decling phase is entered back into,
The time threshold TInstAre as follows: maximum continuous working period of the vehicle in the current upper bound instantaneous power threshold value；
When η range is (0,1), vehicle is forbidden to enter the decling phase from the currently practical operation power, until
Vehicle runs η times of the time threshold T in the current upper bound instantaneous power threshold value againInst, enter back into the decaying rank
Section.
Optionally, the acquiring unit is specifically used for:
Obtain the current voltage and current flow of automobile bus；
Calculate the currently practical operation power of vehicle, process are as follows:
PActl=Upck×Ipck；
In formula, PActlFor the currently practical operation power, UpckFor the current voltage, IpckFor the current flow.
Optionally, first computing unit is specifically used for:
Transfinite the accumulative process for running function amount B described in calculating are as follows:
In formula, t is that the currently practical operation power of vehicle is more than the operation of the current upper bound continuous power threshold value
Time, PActlFor the currently practical operation power, PConstFor the current upper bound continuous power threshold value.
Optionally, second computing unit is specifically used for:
Function amount A, process can be run by calculating the upper limit are as follows:
A=(PInst-PConst)×TInst；
In formula, PInstFor current upper bound instantaneous power threshold value, PConstFor the current upper bound continuous power threshold value, TInstFor
The maximum continuous working period of time threshold, specially vehicle in the current upper bound instantaneous power threshold value；
Calculate the ratio C, process are as follows:
From above-mentioned technical solution it is found that the invention discloses a kind of electric automobile energy control method and systems, when whole
When the currently practical operation power of vehicle is more than current upper bound continuous power threshold value, the currently practical operation power for calculating vehicle is more than
The accumulative operation function amount that transfinites of current upper bound continuous power threshold value, and further calculate the accumulative operation function amount that transfinites and account for the upper limit and can transport
The ratio of row function amount, so that the current permission Upper Bound Power threshold value of vehicle is determined based on ratio and default delay attenuation coefficient, with
Just according to the current actually available discharge power upper limit for allowing Upper Bound Power threshold value to control vehicle.It is determined the present invention is based on function amount
The current permission Upper Bound Power threshold value of vehicle can consider electricity when controlling the actually available discharge power upper limit of vehicle in real time
The electric discharge function amount of Chi Bao, rather than just the discharge time of battery pack, therefore can be such that the discharge capability of battery pack obtains very well
Release, while big step jump will not occur for the actual motion power of vehicle, to effectively reduce the power of vehicle
Output generates step evolution decaying, avoids vehicle from generating shake even pause and transition in rhythm or melody emotion condition, improves driver comfort.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
Disclosed attached drawing obtains other attached drawings.
Fig. 1 is a kind of electric automobile energy control method flow chart disclosed by the embodiments of the present invention；
Fig. 2 is a kind of structural schematic diagram of electric automobile energy control system disclosed by the embodiments of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of electric automobile energy control method and systems, when the currently practical operation of vehicle
When power is more than current upper bound continuous power threshold value, the currently practical operation power for calculating vehicle is more than current upper bound continuous power
The accumulative operation function amount that transfinites of threshold value, and further calculate the accumulative operation function amount that transfinites and account for the upper limit and can run the ratio of function amount, from
And the current permission Upper Bound Power threshold value of vehicle is determined based on ratio and default delay attenuation coefficient, so that basis currently allows
Limit the actually available discharge power upper limit of power threshold control vehicle.The present invention is based on the current of vehicle that function amount determines to allow
Power threshold is limited, when controlling the actually available discharge power upper limit of vehicle, can consider the electric discharge function amount of battery pack in real time, and
Not only discharge time of battery pack, therefore the discharge capability of battery pack can be made to be discharged well, while vehicle
Big step jump will not occur for actual motion power, decline so that the power output for effectively reducing vehicle generates step evolution
Subtract, avoids vehicle from generating shake even pause and transition in rhythm or melody emotion condition, improve driver comfort.
Referring to Fig. 1, a kind of electric automobile energy control method flow chart, this method application disclosed in one embodiment of the invention
In VCU (Vehicle Control Unit, control unit for vehicle), comprising steps of
Step S101, the currently practical operation power of vehicle is obtained；
For electric car, especially pure electric automobile, BMS (Battery Management System, battery
Management system) can Real-time Feedback automobile bus current voltage UpckWith current flow IpckTo VCU, VCU is according to current voltage Upck
With current flow IpckThe currently practical operation power P of vehicle is calculatedActl, it is specific as follows:
PActl=Upck×Ipck (1)。
Step S102, judge whether currently practical operation power is more than current upper bound continuous power threshold value, if it is, holding
Row step S103, if it is not, then returning to step S101；
For electric car, especially pure electric automobile, the discharge capability of battery pack by BMS real-time monitoring and is sent
Onto automobile bus, i.e. BMS can send the current upper bound continuous power threshold value P of battery pack in real timeConstWith the instantaneous function of current upper bound
Rate threshold value PInstTo VCU.
By comparing currently practical operation power PActlWith current upper bound continuous power threshold value PConstSize relation
Know vehicle currently practical operation power PActlWith whether be more than current upper bound continuous power threshold value PConstIf PActl>
PConst, then step S103 is continued to execute；, whereas if PActl≤PConst, then without limiting the operation power of vehicle, this
When, return step S101 continues the actual motion power for obtaining vehicle in real time.
Step S103, the accumulative operation function that transfinites that currently practical operation power is more than current upper bound continuous power threshold value is calculated
Amount；
Specifically, calculating the accumulative operation function amount that transfinites that currently practical operation power is more than current upper bound continuous power threshold value
The process of B is as follows:
In formula, t is that the currently practical operation power of vehicle is more than the runing time of current upper bound continuous power threshold value.
Formula (2) indicates that currently practical operation power is more than the power over time of current upper bound continuous power threshold value operation
Integral, the also as function amount that is run within the overtime of vehicle.
Step S104, the ratio of function amount can be run by calculating the accumulative operation function amount that transfinites and accounting for the upper limit；
Specifically, vehicle is set as a time in the maximum continuous working period of current upper bound instantaneous power threshold value
Threshold value TInst, time threshold TInstFor the calibration value greater than 0.
The calculating process that the upper limit can run function amount A is as follows:
A=(PInst-PConst)×TInst(3)；
It is as follows then to calculate the process that accumulative operation function amount accounts for the ratio C that the upper limit can run function amount that transfinites:
Step S105, the current permission Upper Bound Power threshold value of vehicle, root are calculated based on ratio and default delay attenuation coefficient
According to the current actually available discharge power upper limit for allowing Upper Bound Power threshold value to control vehicle.
Specifically, calculating current permission Upper Bound Power threshold value P according to formula (5)Lmt, process are as follows:
As η=0, in the currently practical operation power P of vehicleActlMore than current upper bound continuous power threshold value PConstAfterwards,
Directly control the currently practical operation power P of vehicleActlInto the decling phase, the decling phase namely the current reality for controlling vehicle
Border runs power PActlDirectly from current upper bound instantaneous power threshold value PInstDrop to current upper bound continuous power threshold value PConst；
It should be noted that the decling phase in the present embodiment is actually the currently practical operation power to vehicle
PActlA control stage, in the control stage it is considered that there are one by current upper bound instantaneous power threshold value PInstUnder
Drop to current upper bound continuous power threshold value PConstCurve, when the currently practical operation power P of vehicleActlIt is held more than current upper bound
Continuous power threshold PConstAfterwards, the currently practical operation power P of vehicleActlIt drops into this curve, at this time to vehicle
Currently practical operation power PActlIt is controlled according to this curve trend.
As η=1, carry out except zero protection, and forbid the currently practical operation power P of vehicleActlInto the decling phase, directly
To vehicle in current upper bound instantaneous power threshold value PInstRuning time threshold value T againInstAfterwards, the decling phase is entered back into, i.e. vehicle
Currently practical operation power PActlDirectly from current upper bound instantaneous power threshold value PInstDrop to current upper bound continuous power threshold value
PConst；
It should be noted that (1- η) as denominator will be equal to zero, in this case as η=1, it is necessary into
Row is except zero protection, except zero protection namely the value directly to (1- η) one very little of assignment, for example, 0.001 is assigned a value of, to avoid work
It is equal to zero for (the 1- η) of denominator.
When η range is (0,1), vehicle is forbidden to enter the decling phase from currently practical operation power, until vehicle is being worked as
Preceding upper limit instantaneous power threshold value runs η times of time threshold T againInst, enter back into the decling phase.
In formula (5),Value range be [0,1], whenWhen, then it enablesValue be 1.
It should be strongly noted that if calculating current permission Upper Bound Power threshold value P according to formula (6)Lmt, process are as follows:
PLmt=(1-C) × (PInst-PConst)+PConst(6)；
The current permission Upper Bound Power threshold value P that above-mentioned VCU is calculated according to formula (6)LmtIt is real-time to can be used as vehicle
Allow Upper Bound Power threshold value, can control the actually available discharge power upper limit of vehicle according to the permission Upper Bound Power threshold value.
But calculation formula shown in formula (6), in actual moving process, if the currently practical operation power of vehicle
Runing time more than current upper bound continuous power threshold value reaches preset time threshold TInstAfterwards, VCU is calculated according to formula (6)
Obtained current permission Upper Bound Power threshold value PLmtI.e. at any time gradually by current upper bound instantaneous power threshold value PInstStart to decay,
Accordingly, it is possible to cause vehicle can not be in current upper bound instantaneous power threshold value PInstContinuous working period threshold value TInst, in other words,
The maximum discharge capability of battery pack may be subject to certain restrictions.
Preference strategy is protected according to battery pack, the current permission Upper Bound Power threshold value P being calculated based on formula (6)Lmt
It controls the actually available discharge power upper limit of vehicle, can utmostly realize the protection to battery pack, but also influence simultaneously
The power performance of vehicle.
To solve this problem, present inventor increases a default delay decaying system on the basis of formula (6)
Number η, η are user's scalar quantity, and 0≤η≤1 is indicated in current upper bound instantaneous power threshold value PInstThe degree to decay when operation, thus
It obtains currently allowing Upper Bound Power threshold calculations formula shown in formula (5).
In summary, electric automobile energy control method disclosed by the invention, when the currently practical operation power of vehicle is super
When crossing current upper bound continuous power threshold value, the currently practical operation power for calculating vehicle is more than current upper bound continuous power threshold value
Transfinite accumulative operation function amount, and further calculates the accumulative operation function amount that transfinites and account for the upper limit and can run the ratio of function amount, to be based on
Ratio and default delay attenuation coefficient determine the current permission Upper Bound Power threshold value of vehicle, to allow Upper Bound Power according to current
The actually available discharge power upper limit of threshold value control vehicle.The present invention is based on the current permission Upper Bound Powers for the vehicle that function amount determines
Threshold value can consider the electric discharge function amount of battery pack when controlling the actually available discharge power upper limit of vehicle in real time, and not only
It is the discharge time of battery pack, therefore the discharge capability of battery pack can be made to be discharged well, while the practical fortune of vehicle
Row power will not occur big step jump and avoid so that the power output for effectively reducing vehicle generates step evolution decaying
Vehicle generates shake even pause and transition in rhythm or melody emotion condition, improves driver comfort.
Corresponding with above method embodiment, the invention also discloses a kind of electric automobile energy control systems.
Referring to fig. 2, a kind of structural schematic diagram of electric automobile energy control system disclosed in one embodiment of the invention, this is
System is applied to VCU, comprising:
Acquiring unit 201, for obtaining the currently practical operation power of vehicle；
For electric car, especially pure electric automobile, BMS (Battery Management System, battery
Management system) can Real-time Feedback automobile bus current voltage UpckWith current flow IpckTo VCU, VCU is according to current voltage Upck
With current flow IpckThe currently practical operation power P of vehicle is calculatedActl。
Therefore, acquiring unit 201 is specifically used for:
Obtain the current voltage and current flow of automobile bus；
Calculate the currently practical operation power of vehicle, process are as follows:
PActl=Upck×Ipck(1)；
In formula, PActlFor currently practical operation power, UpckFor current voltage, IpckFor current flow.
Judging unit 202, for judging whether currently practical operation power is more than current upper bound continuous power threshold value；
For electric car, especially pure electric automobile, the discharge capability of battery pack by BMS real-time monitoring and is sent
Onto automobile bus, i.e. BMS can send the current upper bound continuous power threshold value P of battery pack in real timeConstWith the instantaneous function of current upper bound
Rate threshold value PInstTo VCU.
By comparing currently practical operation power PActlWith current upper bound continuous power threshold value PConstSize relation
Know vehicle currently practical operation power PActlWith whether be more than current upper bound continuous power threshold value PConstIf PActl>
PConst, then the first computing unit 203 is continued to execute；, whereas if PActl≤PConst, then carried out without the operation power to vehicle
Limitation, at this point, returning to acquiring unit 201.
First computing unit 203, for calculating currently practical operation function in the case where judging unit 202 is judged as YES
Rate is more than the accumulative operation function amount that transfinites of current upper bound continuous power threshold value；
First computing unit 203 is specifically used for:
Calculate the process for the accumulative operation function amount B that transfinites are as follows:
In formula, t is that the currently practical operation power of vehicle is more than the runing time of current upper bound continuous power threshold value, PActl
For currently practical operation power, PConstFor current upper bound continuous power threshold value.
Second computing unit 204, the ratio of function amount can be run by accounting for the upper limit for calculating the accumulative operation function amount that transfinites；
Second computing unit 204 is specifically used for:
Calculating upper limit can run function amount A, process are as follows:
A=(PInst-PConst)×TInst(3)；
In formula, PInstFor current upper bound instantaneous power threshold value, PConstFor current upper bound continuous power threshold value, TInstFor the time
The maximum continuous working period of threshold value, specially vehicle in current upper bound instantaneous power threshold value.
The calculating accumulative operation function amount that transfinites accounts for the upper limit and can run the ratio C of function amount, process are as follows:
Control unit 205, for calculating the current permission Upper Bound Power of vehicle based on ratio and default delay attenuation coefficient
Threshold value, according to the current actually available discharge power upper limit for allowing Upper Bound Power threshold value to control vehicle.
Control unit 205 is specifically used for:
The current permission Upper Bound Power threshold value of vehicle, process are calculated based on ratio and default delay attenuation coefficient are as follows:
In formula, PLmtCurrently to allow Upper Bound Power threshold value, C is that the accumulative operation function amount that transfinites accounts for the upper limit and can run function amount
Ratio, η are default delay attenuation coefficient, PInstFor current upper bound instantaneous power threshold value, PConstFor current upper bound continuous power threshold
Value,Value range be [0,1]；
As η=0, vehicle currently practical operation power be more than current upper bound continuous power threshold value after, directly control
The currently practical operation power of vehicle enters decling phase, decling phase are as follows: the currently practical operation power for controlling vehicle is direct
Drop to current upper bound continuous power threshold value from current upper bound instantaneous power threshold value.
As η=1, carry out except zero protection, and vehicle is forbidden to enter the decling phase from currently practical operation power, until whole
Vehicle is in current upper bound instantaneous power threshold value runing time threshold value T againInst, enter back into decling phase, time threshold are as follows: vehicle exists
The maximum continuous working period of current upper bound instantaneous power threshold value；
When η range is (0,1), vehicle is forbidden to enter the decling phase from currently practical operation power, until vehicle is being worked as
Preceding upper limit instantaneous power threshold value runs η times of time threshold T againInst, enter back into the decling phase.
It should be noted that (1- η) as denominator will be equal to zero, in this case as η=1, it is necessary into
Row is except zero protection, except zero protection namely the value directly to (1- η) one very little of assignment, for example, 0.001 is assigned a value of, to avoid work
It is equal to zero for (the 1- η) of denominator.
In summary, electric automobile energy control system disclosed by the invention, when the currently practical operation power of vehicle is super
When crossing current upper bound continuous power threshold value, the currently practical operation power for calculating vehicle is more than current upper bound continuous power threshold value
Transfinite accumulative operation function amount, and further calculates the accumulative operation function amount that transfinites and account for the upper limit and can run the ratio of function amount, to be based on
Ratio and default delay attenuation coefficient determine the current permission Upper Bound Power threshold value of vehicle, to allow Upper Bound Power according to current
The actually available discharge power upper limit of threshold value control vehicle.The present invention is based on the current permission Upper Bound Powers for the vehicle that function amount determines
Threshold value can consider the electric discharge function amount of battery pack when controlling the actually available discharge power upper limit of vehicle in real time, and not only
It is the discharge time of battery pack, therefore the discharge capability of battery pack can be made to be discharged well, while the practical fortune of vehicle
Row power will not occur big step jump and avoid so that the power output for effectively reducing vehicle generates step evolution decaying
Vehicle generates shake even pause and transition in rhythm or melody emotion condition, improves driver comfort.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or equipment for including element.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of electric automobile energy control method characterized by comprising
Obtain the currently practical operation power of vehicle；
Judge whether the currently practical operation power is more than current upper bound continuous power threshold value；
If so, calculating the accumulative operation of transfiniting that the currently practical operation power is more than the current upper bound continuous power threshold value
Function amount；
The accumulative operation function amount that transfinites described in calculating, which accounts for the upper limit, can run the ratio of function amount；
The current permission Upper Bound Power threshold value that vehicle is calculated based on the ratio and default delay attenuation coefficient, according to described current
Upper Bound Power threshold value is allowed to control the actually available discharge power upper limit of vehicle.
2. electric automobile energy control method according to claim 1, which is characterized in that described based on the ratio and pre-
If the attenuation coefficient that is delayed calculates the current permission Upper Bound Power threshold value of vehicle, controlled according to the current permission Upper Bound Power threshold value
The actually available discharge power upper limit of vehicle, specifically includes:
The current permission Upper Bound Power threshold value of vehicle, process are calculated based on the ratio and the default delay attenuation coefficient
Are as follows:
In formula, PLmtFor the current permission Upper Bound Power threshold value, C is the ratio, and η is the default delay attenuation coefficient,
PInstFor current upper bound instantaneous power threshold value, PConstFor the current upper bound continuous power threshold value,Value range be [0,
1]；
As η=0, vehicle the currently practical operation power be more than the current upper bound continuous power threshold value after, directly
The currently practical operation power of control vehicle enters the decling phase；
As η=1, carry out except zero protection, and vehicle is forbidden to enter the decling phase from the currently practical operation power, directly
To vehicle in current upper bound instantaneous power threshold value runing time threshold value T againInst, the decling phase is entered back into, it is described
Time threshold TInstAre as follows: maximum continuous working period of the vehicle in the current upper bound instantaneous power threshold value；
When η range is (0,1), vehicle is forbidden to enter the decling phase from the currently practical operation power, until vehicle
η times of the time threshold T is run again in the current upper bound instantaneous power threshold valueInst, enter back into the decling phase.
3. electric automobile energy control method according to claim 1, which is characterized in that the current reality for obtaining vehicle
Border runs power, specifically includes:
Obtain the current voltage and current flow of automobile bus；
Calculate the currently practical operation power of vehicle, process are as follows:
PActl=Upck×Ipck；
In formula, PActlFor the currently practical operation power, UpckFor the current voltage, IpckFor the current flow.
4. electric automobile energy control method according to claim 1, which is characterized in that the calculating is described currently practical
Operation power is more than the accumulative operation function amount that transfinites of the current upper bound continuous power threshold value, is specifically included:
Transfinite the accumulative process for running function amount B described in calculating are as follows:
In formula, t is that the currently practical operation power of vehicle is more than the runing time of the current upper bound continuous power threshold value,
PActlFor the currently practical operation power, PConstFor the current upper bound continuous power threshold value.
5. electric automobile energy control method according to claim 4, which is characterized in that transfinite described in the calculating accumulative
Operation function amount, which accounts for the upper limit, can run the ratio of function amount, specifically include:
Function amount A, process can be run by calculating the upper limit are as follows:
A=(PInst-PConst)×TInst；
In formula, PInstFor current upper bound instantaneous power threshold value, PConstFor the current upper bound continuous power threshold value, TInstFor the time
The maximum continuous working period of threshold value, specially vehicle in the current upper bound instantaneous power threshold value；
Calculate the ratio C, process are as follows:
6. a kind of electric automobile energy control system characterized by comprising
Acquiring unit, for obtaining the currently practical operation power of vehicle；
Judging unit, for judging whether the currently practical operation power is more than current upper bound continuous power threshold value；
First computing unit, for calculating the currently practical operation power in the case where the judging unit is judged as YES
More than the accumulative operation function amount that transfinites of the current upper bound continuous power threshold value；
Second computing unit, the ratio of function amount can be run by accounting for the upper limit for calculating the accumulative operation function amount that transfinites；
Control unit, for calculating the current permission Upper Bound Power threshold of vehicle based on the ratio and default delay attenuation coefficient
Value, according to the current actually available discharge power upper limit for allowing Upper Bound Power threshold value to control vehicle.
7. electric automobile energy control system according to claim 6, which is characterized in that described control unit is specifically used
In:
The current permission Upper Bound Power threshold value of vehicle, process are calculated based on the ratio and the default delay attenuation coefficient
Are as follows:
In formula, PLmtFor the current permission Upper Bound Power threshold value, C is the ratio, and η is the default delay attenuation coefficient,
PInstFor current upper bound instantaneous power threshold value, PConstFor the current upper bound continuous power threshold value,Value range be [0,
1]；
As η=0, vehicle the currently practical operation power be more than the current upper bound continuous power threshold value after, directly
The currently practical operation power of control vehicle enters the decling phase；
As η=1, carry out except zero protection, and vehicle is forbidden to enter the decling phase from the currently practical operation power, directly
To vehicle in current upper bound instantaneous power threshold value runing time threshold value T againInst, the decling phase is entered back into, it is described
Time threshold TInstAre as follows: maximum continuous working period of the vehicle in the current upper bound instantaneous power threshold value；
When η range is (0,1), vehicle is forbidden to enter the decling phase from the currently practical operation power, until vehicle
η times of the time threshold T is run again in the current upper bound instantaneous power threshold valueInst, enter back into the decling phase.
8. electric automobile energy control system according to claim 6, which is characterized in that the acquiring unit is specifically used
In:
Obtain the current voltage and current flow of automobile bus；
Calculate the currently practical operation power of vehicle, process are as follows:
PActl=Upck×Ipck；
In formula, PActlFor the currently practical operation power, UpckFor the current voltage, IpckFor the current flow.
9. electric automobile energy control system according to claim 6, which is characterized in that first computing unit is specific
For:
Transfinite the accumulative process for running function amount B described in calculating are as follows:
In formula, t is that the currently practical operation power of vehicle is more than the runing time of the current upper bound continuous power threshold value,
PActlFor the currently practical operation power, PConstFor the current upper bound continuous power threshold value.
10. electric automobile energy control system according to claim 9, which is characterized in that the second computing unit tool
Body is used for:
Function amount A, process can be run by calculating the upper limit are as follows:
A=(PInst-PConst)×TInst；
In formula, PInstFor current upper bound instantaneous power threshold value, PConstFor the current upper bound continuous power threshold value, TInstFor the time
The maximum continuous working period of threshold value, specially vehicle in the current upper bound instantaneous power threshold value；
Calculate the ratio C, process are as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910096725.8A CN109760550B (en) | 2019-01-31 | 2019-01-31 | Electric automobile energy control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910096725.8A CN109760550B (en) | 2019-01-31 | 2019-01-31 | Electric automobile energy control method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109760550A true CN109760550A (en) | 2019-05-17 |
| CN109760550B CN109760550B (en) | 2020-09-29 |
Family
ID=66455857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910096725.8A Active CN109760550B (en) | 2019-01-31 | 2019-01-31 | Electric automobile energy control method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109760550B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244228A (en) * | 2019-07-17 | 2019-09-17 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of battery control method and device |
| CN110962686A (en) * | 2019-12-13 | 2020-04-07 | 华人运通(江苏)技术有限公司 | Vehicle energy flow control method and device and vehicle |
| CN111890985A (en) * | 2020-06-30 | 2020-11-06 | 汉腾汽车有限公司 | Method for adjusting available power of battery of electric vehicle |
| CN112217182A (en) * | 2019-07-12 | 2021-01-12 | 广州汽车集团股份有限公司 | New energy vehicle battery protection method and new energy vehicle battery protection system |
| CN113276726A (en) * | 2021-05-18 | 2021-08-20 | 江铃汽车股份有限公司 | Electric truck energy management method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130218382A1 (en) * | 2012-02-22 | 2013-08-22 | Masaya Yamamoto | Electric vehicle and method of controlling the same |
| US20140100730A1 (en) * | 2012-10-05 | 2014-04-10 | Kia Motors Corporation | Method and system for controlling engine start of hybrid vehicle |
| CN106463978A (en) * | 2014-04-30 | 2017-02-22 | 雷诺股份公司 | Method and device for monitoring the electrical battery of a vehicle |
| CN106608200A (en) * | 2015-10-27 | 2017-05-03 | 北汽福田汽车股份有限公司 | Power output control method and system of electric car |
| CN106864290A (en) * | 2017-03-09 | 2017-06-20 | 重庆长安汽车股份有限公司 | A kind of battery management method, battery management system for electric automobile |
-
2019
- 2019-01-31 CN CN201910096725.8A patent/CN109760550B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130218382A1 (en) * | 2012-02-22 | 2013-08-22 | Masaya Yamamoto | Electric vehicle and method of controlling the same |
| US20140100730A1 (en) * | 2012-10-05 | 2014-04-10 | Kia Motors Corporation | Method and system for controlling engine start of hybrid vehicle |
| CN106463978A (en) * | 2014-04-30 | 2017-02-22 | 雷诺股份公司 | Method and device for monitoring the electrical battery of a vehicle |
| CN106608200A (en) * | 2015-10-27 | 2017-05-03 | 北汽福田汽车股份有限公司 | Power output control method and system of electric car |
| CN106864290A (en) * | 2017-03-09 | 2017-06-20 | 重庆长安汽车股份有限公司 | A kind of battery management method, battery management system for electric automobile |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217182A (en) * | 2019-07-12 | 2021-01-12 | 广州汽车集团股份有限公司 | New energy vehicle battery protection method and new energy vehicle battery protection system |
| CN112217182B (en) * | 2019-07-12 | 2022-09-09 | 广汽埃安新能源汽车有限公司 | New energy vehicle battery protection method and new energy vehicle battery protection system |
| CN110244228A (en) * | 2019-07-17 | 2019-09-17 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of battery control method and device |
| CN110244228B (en) * | 2019-07-17 | 2022-04-15 | 东软睿驰汽车技术（沈阳）有限公司 | Battery control method and device |
| CN110962686A (en) * | 2019-12-13 | 2020-04-07 | 华人运通(江苏)技术有限公司 | Vehicle energy flow control method and device and vehicle |
| CN111890985A (en) * | 2020-06-30 | 2020-11-06 | 汉腾汽车有限公司 | Method for adjusting available power of battery of electric vehicle |
| CN113276726A (en) * | 2021-05-18 | 2021-08-20 | 江铃汽车股份有限公司 | Electric truck energy management method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109760550B (en) | 2020-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109760550A (en) | A kind of electric automobile energy control method and system | |
| EP2685598B1 (en) | Charge control device for vehicle | |
| CN102447283B (en) | Charging system and charging method | |
| EP2685597A1 (en) | Charge control device for vehicle | |
| US7917276B2 (en) | Vehicle-use power supply apparatus | |
| CN107359792B (en) | A kind of power optimization device and its control method and control device | |
| KR102160399B1 (en) | System and method for optimizing power consumption in a hybrid electric vehicle | |
| US11108261B2 (en) | Supplementary charging system and method for auxiliary battery of eco-friendly vehicle | |
| US11345241B1 (en) | Method of optimizing system efficiency for battery powered electric motors | |
| CN105365599A (en) | Vehicle propulsion system having an energy storage system and optimized method of controlling operation thereof | |
| CN109677271A (en) | A kind of control method and device of engine | |
| JP2015228714A (en) | Charger for motor car | |
| CN110571838B (en) | Energy storage battery early peak load reduction control method and device | |
| CN103619638A (en) | Fuel cell system and control method therefor | |
| CN108928242A (en) | Distance increasing unit operating condition control method and device | |
| CN110015101B (en) | Charging system and charging method | |
| CN114156968B (en) | Charging and discharging control method and device of energy storage system, controller and energy storage system | |
| CN110277807A (en) | Charging current control method and apparatus, battery management system, vehicle, device, and computer-readable storage medium | |
| CN114513013A (en) | Energy scheduling method, device, control equipment and storage medium | |
| JP2005065480A (en) | Charging method for power storage system | |
| CN109677299A (en) | A kind of power output module power distribution method, device and double power range systems | |
| JP2014143851A (en) | Fuel cell system for electric vehicle | |
| CN109818089A (en) | A kind of battery current-limiting method and device | |
| JP2006042422A (en) | Power storage system | |
| JP6054918B2 (en) | Dual power load drive fuel cell system and fuel cell vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hirain Technologies Co.,Inc. Address before: 8 / F, block B, No. 11, Anxiang Beili, Chaoyang District, Beijing 100101 Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |