CN109760524A - A kind of hybrid vehicle and its control method - Google Patents
A kind of hybrid vehicle and its control method Download PDFInfo
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- CN109760524A CN109760524A CN201910078379.0A CN201910078379A CN109760524A CN 109760524 A CN109760524 A CN 109760524A CN 201910078379 A CN201910078379 A CN 201910078379A CN 109760524 A CN109760524 A CN 109760524A
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- range extender
- electrical power
- coupling
- control method
- electrokinetic cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention discloses a kind of hybrid vehicles, comprising: electrokinetic cell system；Range extender system；Electric drive system is electrically connected with the electrokinetic cell system and the range extender system respectively, can be moved using electrical energy drive vehicle；And coupling electrical power device, for realizing the current control between the electrokinetic cell system, the range extender system and the electric drive system.The embodiment of the present invention can reduce the complexity of mixed power vehicle dynamic system, and correspondingly improve the efficiency of energy utilization of vehicle.
Description
Technical field
The present invention relates to engineering truck field more particularly to a kind of hybrid vehicle and its control methods.
Background technique
Requirement with people to environmental protection is increasingly strict, and exploitation low emission, the electric car of low pollution are imperative.But
Since the progress of not making a breakthrough property, battery module are not difficult to minimize in power battery technology at present, and course continuation mileage it is short,
Charging time length all limits the development of pure electric automobile.At this point, hybrid electric vehicle it by existing car combustion engine and tool
There is the energy storage device (mainly power battery or super capacitor) of certain capacity to combine by corresponding control mode, to make vehicle
Have lower oil consumption and higher energy efficiency, increasingly have been favored by people.
The power scheme of existing hybrid electric vehicle is broadly divided into two kinds, one is the side of double motor mechanical couplings
The motor that formula, i.e. motor used in range extender system and power battery are driven carries out mechanical coupling by planet row structure
It closes, coupler of this power coupling mode due to needing mechanical structure, causes vehicle processing cost high, the volume of dynamical system
Greatly, make vehicle layout inconvenient, and with the variation of distance increasing unit revolving speed, so that engine efficiency and fuel economy can not be protected
Card, so that whole efficiency is lower.The second is by the way of range extender system serial power battery system driving motor, this side
Formula makes power battery often in the working condition of alternately charge and discharge, is easy to influence the service life of power battery, and in vehicle
Under electric-only mode, power battery charging can not be given in time, reduces the course continuation mileage of vehicle.
In addition, for engineering truck, since traveling working scene is varied, while the load amplitude of variation of vehicle
Greatly, relevant oil-electric vehicle is difficult to meet the energy requirement of engineering truck, can not be in engineering truck climbing heavy duty etc.
Sufficient power is provided under extreme scenes.
Summary of the invention
At least one purpose of the invention is to propose a kind of hybrid vehicle and its control method, and it is dynamic to can reduce mixing
The complexity of power automotive power, and correspondingly improve the efficiency of energy utilization of vehicle.Many technologies provided by the invention
Many technical effects elaboration as detailed below that optimal technical scheme in scheme can be generated.
To achieve the above object, the present invention provides following technical schemes:
A kind of hybrid vehicle provided by the invention, comprising: electrokinetic cell system；Range extender system；Electric drive system, point
It is not electrically connected, can be moved using electrical energy drive vehicle with the electrokinetic cell system and the range extender system；And electric work
Rate coupling device, for realizing the electric current between the electrokinetic cell system, the range extender system and the electric drive system
Control.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Coupling electrical power device includes: the first coupler, is set between the electrokinetic cell system and the electric drive system, can be controlled
Make the size and Orientation of electric current between the electrokinetic cell system and the electric drive system.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Coupling electrical power device includes: the second coupler, is set between the range extender system and the electrokinetic cell system, can
Control the size and Orientation of electric current between the range extender system and the electrokinetic cell system.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
First coupler is also arranged between the range extender system and the electrokinetic cell system, can control the distance increasing unit system
The size and Orientation of electric current between system and the electrokinetic cell system.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
First coupler can adjust the electrokinetic cell system and range extender system electricity by adjusting itself coupling electrical power
The ratio of power.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Range extender system exports electric energy with constant voltage, and first coupler is controlled described dynamic by controlling itself sense of current
Power battery system is in charged state or discharge condition.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Hybrid vehicle includes: relay, is set between the coupling electrical power device and the range extender system, for controlling
The on-off of circuit between the coupling electrical power device and the range extender system.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Hybrid vehicle includes: control unit for vehicle VCU；The electrokinetic cell system includes: battery pack and can report described
The remaining capacity VOC of the battery pack and battery management unit BMS of fault message；The range extender system includes: engine and institute
It states the generator of engine power connection and the range extender system control of the engine start/stop and its output power can be controlled
Unit R CU processed；The electric drive system includes: driving motor and the driving motor control that can report the driving motor torque
Unit MCU processed；The coupling electrical power device includes: coupling electrical power device and can control the coupling electrical power device coupling
Close the Coupling Control Unit CCU of electric current；Wherein, the BMS, the RCU, the MCU and the equal communication connection of the CCU are in described
VCU。
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Generator is electric-driving generation integrating machine, and the electrokinetic cell system can power for the electric-driving generation integrating machine, so that described
Engine has initial speed.
A kind of control method of hybrid vehicle as previously described, the control method include: that the measurement electricity drives
The electricity of system drives the remaining capacity VOC of torque and the battery system；And torque and the VOC are driven according to the electricity,
It controls the range extender system, the electric drive system and the coupling electrical power device and is in different setting operating conditions, thus
The hybrid vehicle is set to be in different operating modes.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: to make the increasing when the electricity drives torque and is lower than the first setting value lower than the first setting torque, the VOC
Journey device system works in the first setting operating condition, and the coupling electrical power device is made to be in the first coupling operating condition, to make described
Hybrid vehicle is in driving charge mode.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: so that the range extender system is in the second setting operating condition when the VOC is higher than the second setting value and make
The coupling electrical power device is in the second coupling operating condition, so that the hybrid vehicle be made to be in electric running mode；Its
In, second setting value is lower than first setting value.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: to make the increasing when the electricity drives torque and is higher than the first setting torque, the VOC higher than the second setting value
Journey device system works in the first setting operating condition and the coupling electrical power device is made to be in third coupling operating condition, to make described
Hybrid vehicle is in the first mixed dynamic driving mode；Wherein, second setting value is lower than first setting value.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: to make the increasing when the VOC is higher than the second setting value, the electricity drives torque higher than the second setting torque
Journey device system works in the second setting operating condition and the coupling electrical power device is made to be in third coupling operating condition, to make described
Hybrid vehicle is in the second mixed dynamic driving mode；Wherein, the second setting torque is greater than the first setting torque, institute
The second setting value is stated lower than first setting value.
The optimization of technical solution after any technical solution or any optimization that are provided above or hereinafter as the present invention, in institute
When stating coupling electrical power device in the second coupling operating condition, keep the circuit of the range extender system and the battery system disconnected
It opens.
The optimization of technical solution after any technical solution or any optimization that are provided above or hereinafter as the present invention, in institute
When stating coupling electrical power device and being in third coupling operating condition, keep the circuit of the range extender system and the battery system disconnected
It opens.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method include: when the VOC is lower than the second setting value, make the coupling electrical power device be in the first coupling operating condition,
The range extender system is in the first setting operating condition, the electric drive system does not work, so that the hybrid vehicle be made to be in
Parking charge mode；Wherein, second setting value is lower than first setting value.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: so that the electric drive system is in generating state under the hybrid vehicle on-position and make described
Coupling electrical power device is in the first coupling operating condition, so that vehicle braking energy be made to be recycled to the electrokinetic cell system.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: to make the driving electricity before the range extender system and the coupling electrical power device are in running order
Machine enters enabled state.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: the information reported according to the BMS and MCU, provides optional operating mode for driver, is supplied
The driver independently selects；And the VOC and electricity of setting are not met in the operating mode that the driver independently selects
When driving torque demand, send a warning message.
Based on the above-mentioned technical proposal, the embodiment of the present invention can reduce the complexity of hybrid power wheel dynamical system,
And correspondingly improve the efficiency of energy utilization of vehicle.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is hybrid vehicle system structural schematic diagram provided by one embodiment of the invention；
Fig. 2 is hybrid vehicle system structural schematic diagram provided by another embodiment of the present invention.
Specific embodiment
It is referred to attached drawing below and word content understands between the contents of the present invention and the present invention and the prior art
Distinctive points.Hereafter attached drawing and by way of enumerating some alternative embodiments of the invention, to technical solution of the present invention
(including optimal technical scheme) is described in further detail.
It should be understood that any technical characteristic, any technical solution in the present embodiment are the technologies of plurality of optional
One or more of feature or optional technical solution, in order to describe it is succinct need it is impossible to exhaust of the invention in this document
All alternative technical characteristics and alternative technical solution, the embodiment for being also not easy to each technical characteristic are emphasized
It is one of for optional numerous embodiments, so those skilled in the art will appreciate that can will be provided by the invention any
Technological means is replaced or any two or more technical means or technical features provided by the invention is carried out mutually group
It closes and obtains new technical solution.
Any technical characteristic and any technical solution in the present embodiment do not limit the scope of the invention, this hair
Bright protection scope should include that those skilled in the art do not make the creative labor the thinkable any alternate embodiments of institute
And any two or more technical means or technical features provided by the invention are carried out mutually group by those skilled in the art
New technical solution obtained from conjunction.
The embodiment of the invention provides a kind of hybrid vehicles, comprising: electrokinetic cell system；Range extender system；Electricity drives
System is electrically connected with the electrokinetic cell system and the range extender system respectively, can be moved using electrical energy drive vehicle；With
And coupling electrical power device, for realizing between the electrokinetic cell system, the range extender system and the electric drive system
Current control.
The electrokinetic cell system, which refers to, provides the power supply of power resources for the hybrid vehicle, thus be different from for
The starting battery powered when automobile engine starting.The power battery mainly includes various batteries, such as lead-acid accumulator, phosphorus
Sour iron lithium storage battery etc., can be in the different duty cycles by charge or discharge repeatedly, to meet the power battery in institute
State the function needs under the various driving cycles of hybrid vehicle.
The range extender system refers to for electric automobile during traveling mileage and is installed at an additional energy on electric car
Source block.The range extender system can be directly hybrid vehicle energy supply using electric energy, such as can be with battery
Form.The range extender system can also use other energy conversions as electric energy and be the hybrid vehicle function, such as
Solar panel can be used, to convert solar energy into electrical energy；The combination of generator can also be added using engine, it will
Chemical energy in fuel is converted into electric energy.Wherein the engine can be larger to obtain with non-combusted fuels, such as kerosene or diesel oil
Calorific value and lower cost, can also burn natural gas, to be more advantageous to environmental protection.
The electric drive system is electrically connected to the electrokinetic cell system and the range extender system, for converting electrical energy into
For the mechanical energy of hybrid vehicle movement.With traditional automobile engine different from, the electric drive system is in energy
Additional pollution and discharge will not be generated during conversion, be more conducive to alleviating pollution of the vehicle discharge for environment, with
And to vehicle operator and other may suck the harm of vehicle exhaust personnel health.In addition, making for engineering truck
Replace traditional automobile engine that can also largely reduce the noise in vehicle movement and operation process with electric drive system, subtracts
Vibration between few mechanical part, Optimizing construction environment.
The coupling electrical power device drives for realizing the electrokinetic cell system, the range extender system and the electricity
Electric current distribution between system, is a kind of coupled modes based on electrical power, will be complicated compared with traditional mechanical coupling fashion
The planetary gear set kind of drive be changed to electrical connection and coupling electrical power device comprehensively control, not only greatly reduce dynamical system
Complexity in terms of transmission also enables the dynamical system of hybrid vehicle have the side of a variety of different transmitting energy
To feature and corresponding technical effect are specifically discussed below.
Specifically, the coupling electrical power device makes the electrokinetic cell system, the range extender system and institute
It states and is no longer solely restricted to the electrokinetic cell system, the range extender system between electric drive system respectively with fixed proportion
It powers to the electric drive system, more flexible power supply ratio can also be taken and be adapted to the electric current stream of vehicle difference operating condition
Dynamic direction.
Based on this, the coupling electrical power device provided by the present invention also with it is single used in associated hybrid vehicle
It is distinguished to coupler, so that electrokinetic cell system is no longer in alternately charge and discharge process and reduces the service life, but energy
It is enough in the case where the hybrid vehicle be in a certain specific operation, by coupling electrical power device control, alternative and be in
Charged state or discharge condition.Also, by taking the electrokinetic cell system is in discharge condition as an example, the electrokinetic cell system can
It to power to the electric drive system, to improve the torque of electric drive system, can also power to the range extender system, so as to increase journey
Device system stablizes starting, can also power simultaneously to the electric drive system and the range extender system, to realize difference simultaneously
Functional requirement.
As it can be seen that the power battery charging or the working condition of electric discharge can correspond to a variety of hybrid vehicles
Working condition.Therefore, under the control of the coupling electrical power device, the electrokinetic cell system can be with longer period work
Make in charged state or discharge condition, be conducive to improve the working life of power battery and slow down its decaying for using capacity.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Coupling electrical power device includes: the first coupler, is set between the electrokinetic cell system and the electric drive system, can be controlled
Make the size and Orientation of electric current between the electrokinetic cell system and the electric drive system.
In order to control the size of electric current between the electrokinetic cell system and the electric drive system, first coupler can
It, can also to change the size of electric current and direction on circuit by a variety of components such as resistance, capacitor or internal electric sources to be directly changed
With by adjusting the voltage between the electrokinetic cell system and the electric drive system, and then change the size of current on its circuit
With direction.In addition, relay can be used in first coupler, to control the electrokinetic cell system and the electric drive system
Between electric current on-off.
Based on above-mentioned statement, first coupler is construed as the black box with internal circuit and component
Structure, to those skilled in the art, it is all can be realized the control electrokinetic cell system and the electric drive system it
Between electric current size and Orientation function first coupler and its use physical circuit control method all correspondingly include
In in the open scope of first coupler.
Similar to first coupler, any technical solution or any optimization provided above or hereinafter as the present invention
The optimization of technical solution afterwards, the coupling electrical power device include: the second coupler, be set to the range extender system with it is described
Between electrokinetic cell system, the size of electric current and side between the range extender system and the electrokinetic cell system can be controlled
To.
As shown in Figure 1, technical solution after any technical solution or any optimization that are provided above or hereinafter as the present invention
Optimization, first coupler is also arranged between the range extender system and the electrokinetic cell system, can control
The size and Orientation of electric current between the range extender system and the electrokinetic cell system.I.e. described first coupler is arranged at
Between the range extender system and the electric drive system and the electrokinetic cell system, to realize above-mentioned three's simultaneously
The control of size of current and direction.
Since the range extender system, the electric drive system and the electrokinetic cell system three form Y-shaped electricity
Line structure, first coupler can be arranged at the branch close to a Y-shaped circuit of the electrokinetic cell system,
The size and Orientation that the electric current of the electrokinetic cell system is flowed through with strict control guarantees service life and the use of electrokinetic cell system
Safety.At this point, the principle of the electrical power balance met based on Y-shaped branch, first coupler can be by controlling institute
It states the power of electrokinetic cell system branch and indirectly controls the electrical power size of the two other branch of Y-shaped circuit, to change
Become the size and Orientation of its electric current.
Correspondingly, first coupler can also be disposed in proximity to the electric drive system or the range extender system
The branch of Y-shaped circuit, with the size and Orientation of the electric current of strict control branch where it respectively.The three of the Y-shaped circuit
Branch can also be respectively provided with coupling electrical power device, be directly controlled with realizing to every branch.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
First coupler can adjust the electrokinetic cell system and range extender system electricity by adjusting itself coupling electrical power
The ratio of power.
The circuit theory that input is determined based on load, under mixed dynamic driving status, the electric drive system is as load end, institute
Power battery and the range extender system are stated as the power end input terminal under mixed dynamic driving status, it is any one to pass through control at this time
Item inputs the electrical power of branch, can indirectly control the electrical power of another input branch.
Correspondingly, under charged state of driving a vehicle, the electric drive system and the electrokinetic cell system collectively form load end,
The range extender system is input to the electricity of the electric drive system Yu the electrokinetic cell system as unique input terminal at this time
The proportionate relationship of power can be by being directly arranged at the electrical power of the electric drive system or electrokinetic cell system branch road
Coupling device adjusts, and another branch be then correspondingly by Indirect method.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Range extender system exports electric energy with constant voltage, and first coupler is controlled described dynamic by controlling itself sense of current
Power battery system is in charged state or discharge condition.
In order to keep the working condition of the electric drive system, the electrokinetic cell system and the range extender system more steady
Fixed, the especially described electrokinetic cell system can be with constant voltage charge and discharge, to improve the reliability of the electrokinetic cell system
With durability, the range extender system exports electric energy with constant voltage.The electrokinetic cell system and the electric drive system at this time
Accordingly there is unified voltage swing, the dynamical system of entire mixed motor-car will be worked with constant voltage, improve entire power
The stability of circuit system, especially coupling electrical power device work and the agility of response.
Distance increasing unit output voltage in the range of power allows is constant, then coupling electrical power works in current source mode, Vb
The DC bus-bar voltage that=Vg, i.e. electricity drive depends on the output voltage of distance increasing unit, and electric current meets: Id=Ig+Ib, electricity drive power symbol
Close: Pd=Vg*Id, distance increasing unit power meet: Pg=Vg*Ig, coupling electrical power power meet: Pb=Vg*Ib.
At this point, Ib=Id-Ig is centainly met according to Kirchhoff's current law (KCL) by changing coupling electrical power electric current Ib,
So coupling electrical power power increases, then distance increasing unit power just reduces, and coupling electrical power power reduces, then distance increasing unit power increases
Greatly.When coupling electrical power power is timing, i.e. Id > Ig, then it represents that distance increasing unit and power battery interflow power for driving motor.And
When coupling electrical power power is negative, i.e. Id < Ig, then it represents that distance increasing unit is also charging the battery in addition to driving power supply to electricity.
At this point, the coupling electrical power device needs to change voltage no longer to change the electrical power of each branch, but only need
Electric current of branch, can more easily make the size of current of each branch and direction change where changing it, and then control
Make electrical power size and its distribution direction of each branch.
In order to guarantee that the range extender system will not be to institute when the electrokinetic cell system is electric drive system power supply
It states electrokinetic cell system to have an impact, and makes it while being in charging and discharging state influence battery life, before the present invention
The optimization of technical solution after text or any technical solution or any optimization that provide hereinafter, the hybrid vehicle include: after
Electric appliance is set between the coupling electrical power device and the range extender system, for controlling the coupling electrical power device
The on-off of circuit between the range extender system.
The mixed power vehicle dynamic system is controlled more flexiblely in order to realize, above or hereinafter as the present invention
The optimization of technical solution after any technical solution or any optimization that provide, the hybrid vehicle includes: vehicle control list
First VCU；The electrokinetic cell system includes: battery pack and the remaining capacity VOC and failure letter that can report the battery pack
The battery management unit BMS of breath；The range extender system include: engine, the generator being connect with the engine power, with
And the range extender system control unit RCU of the engine start/stop and its output power can be controlled；The electric drive system includes:
Driving motor and the driving motor control unit MCU that can report the driving motor torque；The coupling electrical power device
It include: coupling electrical power device and the Coupling Control Unit CCU that the coupling electrical power device couple current can be controlled；Wherein, institute
BMS, the RCU, the MCU and the equal communication connection of the CCU are stated in the VCU.
The control unit for vehicle VCU refers to that Vehicle-Control-Unit, the range extender system control unit RCU refer to
Range-extender-Control-Unit, the battery management unit BMS refer to Battery-Management-System, institute
It states driving motor control unit MCU and refers to that Machinery-Control-Unit, the Coupling Control Unit CCU refer to
Communication-Contril-Unit.The work original of the BMS, the RCU, the MCU, the CCU and the VCU
Reason and structure are not as present invention point, therefore details are not described herein.
To realize the engine smooth starting in the range extender system, provided above or hereinafter as the present invention
The optimization of technical solution after any technical solution or any optimization, the generator are electric-driving generation integrating machine, the power electric
Cell system can power for the electric-driving generation integrating machine, so that the engine has initial speed.
The present invention also provides a kind of control method of hybrid vehicle as described in any above, the control methods
It include: that the electricity of the measurement electric drive system drives the remaining capacity VOC of torque and the battery system；And it is driven according to the electricity
Torque and the VOC control the range extender system, the electric drive system and the coupling electrical power device and are in difference
Setting operating condition, so that the hybrid vehicle be made to be in different operating modes.
The control method drives the remaining capacity VOC of torque and the battery system based on the electricity of the electric drive system,
It can be realized automatically by VCU, it can also be by control panel or notification unit, by the operator of the hybrid vehicle
Member manually selects.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: to drive torque in the electricity to set lower than the first setting torque (corresponding to preferable road conditions), the VOC lower than first
(correspond to highest electricity) when definite value, the range extender system is made to work in the first setting operating condition (economy corresponding to engine
Electrician's condition and export firm power), and make the coupling electrical power device be in first coupling operating condition (filled for power battery
Electricity and for increase journey system power supply), thus make the hybrid vehicle be in driving charge mode.
The first setting torque corresponds to preferable road conditions, and first setting value corresponds to expiring for the power battery
Electricity, at this time when range extender system works in economic point operating condition, power needed for output power will be greater than the electric drive system,
And the electricity of the power battery and underfill at this time.At this point, the range extender system can be made to be in the first setting operating condition, i.e. work
Make in the highest state of fuel efficiency, is controlled by the coupling electrical power device, while making its described power battery charging,
For Zengcheng electric drive system power supply.Above-mentioned driving charge mode realizes the utilization of the maximal efficiency of fuel, and will be additional
Energy storage in electrokinetic cell system, with electrical energy demands when large torque state under special operation condition.
For Partial Jobs scene, especially under the more stringent environment of emission request and noise requirements, the mixing
Power car may operate in the state of pure electric vehicle driving, at this point, any technical side provided above or hereinafter as the present invention
The optimization of technical solution after case or any optimization, the control method include: (corresponding when the VOC is higher than the second setting value
In minimum electricity), so that the range extender system is in the second setting operating condition (i.e. engine, which is in, stops operating condition) and makes the electricity
Power coupling arrangements are in the second coupling operating condition (not powered from increasing journey system from electrokinetic cell system to electric drive system), thus
The hybrid vehicle is set to be in electric running mode；Wherein, second setting value is lower than first setting value.
And need to work in often due to the hybrid vehicle under the operative scenario of heavy load or high gradient, it is single at this time
One range extender system or single electrokinetic cell system are all unable to satisfy the electricity needs of the electric drive system.
At this point, as after the present invention any technical solution or any optimization that provide above or hereinafter technical solution it is excellent
Change, the control method includes: to drive torque in the electricity (to correspond to heavier load operating condition higher than the first setting torque, such as climb
Slope road conditions), the VOC is when being higher than the second setting value (correspond to minimum electricity), so that the range extender system is worked in first and set
Determine operating condition (i.e. engine operation puts operating condition in economy) and the coupling electrical power device is made to be in third coupling operating condition (power
Both battery system electric discharge plus increasing journey system are powered jointly for electric drive system), so that the hybrid vehicle be made to be in first
Mixed dynamic driving mode；Wherein, second setting value is lower than first setting value.
Also, technical solution is excellent after any technical solution or any optimization provided above or hereinafter as the present invention
Change, the control method includes: to drive torque higher than the second setting value (corresponding to minimum electricity), the electricity in the VOC to be higher than
(correspond to pole heavy load operating condition, such as heavy duty climbing road conditions) when the second setting torque, the range extender system is made to work in the
Two setting operating condition (i.e. engine operation is in declared working condition) and make the coupling electrical power device be in third coupling operating condition (move
Power battery discharge is electric drive system power supply plus the increasing journey system), to make the hybrid vehicle in second
Mixed dynamic driving mode；Wherein, the second setting torque is greater than the first setting torque, and second setting value is lower than described
First setting value.
The difference of described first mixed dynamic driving mode and the described second mixed dynamic driving mode is that the range extender system is
It is no to work in economic point operating condition.Specifically, the economic point output power when the range extender system adds the power battery
When the output power of system can satisfy the requirement of the input power of the electric drive system, the range extender system can continue work
Make in economic point operating condition, to obtain more preferably efficiency of energy utilization, the hybrid vehicle is in the first mixed dynamic traveling at this time
Mode.And when the economic point output power of the range extender system is unable to satisfy plus the output power of the electrokinetic cell system
When the requirement of the input power of the electric drive system, then the output power of the range extender system is needed to surmount its economy point output work
It is blunt to its rated power, to meet the power demand of the hybrid vehicle under large torque.
In order to guarantee the safety of the electrokinetic cell system, as any technical solution of the invention provided above or hereinafter
Or the optimization of technical solution makes described when the coupling electrical power device is in the second coupling operating condition after any optimization
The circuit of range extender system and the electrokinetic cell system disconnects.
Similarly, technical solution is excellent after any technical solution or any optimization that provide above or hereinafter as the present invention
Change, when the coupling electrical power device is in third coupling operating condition (electric discharge), moves the range extender system with described
The circuit of power battery system disconnects.
And work as the electric power wretched insufficiency of the electrokinetic cell system, it will affect the hybrid vehicle in follow-up work field
When normal use under scape, technical solution after any technical solution or any optimization that are provided above or hereinafter as the present invention
Optimization, the control method include: (to correspond to minimum electricity) when the VOC is lower than the second setting value, make the electrical power
Coupling device is in the first coupling operating condition (electrokinetic cell system charging, increase journey system power supply), the range extender system is in the
One setting operating condition (i.e. engine operation is in efficient routine), the electric drive system do not work, to make the hybrid vehicle
In parking charge mode；Wherein, second setting value is lower than first setting value.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: so that the electric drive system is in generating state under the hybrid vehicle on-position and make described
Coupling electrical power device is in the first coupling operating condition (electrokinetic cell system charging increases journey system power supply), to make vehicle braking
Energy regenerating is to the electrokinetic cell system.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: to make the driving electricity before the range extender system and the coupling electrical power device are in running order
Machine enters enabled state.Wherein, the enabled state is that the driving motor is instigated to be in preparation work state, and enter makes in advance
The driving motor of energy state can make the hybrid vehicle have response faster under various modes switching, and cleverer
Operating characteristics living.
The optimization of technical solution, described after any technical solution or any optimization that provide above or hereinafter as the present invention
Control method includes: the information reported according to the BMS and MCU, provides optional operating mode for driver, is supplied
The driver independently selects；And the VOC and electricity of setting are not met in the operating mode that the driver independently selects
When driving torque demand, send a warning message.
Technical solution provided by the invention is illustrated in more detail below.
Parking charge mode: vehicle stops traveling, remains static, is filled by engine power generation for power battery
Electricity.
Specific work process is as follows: (1) selecting parking charge mode by control panel；(2) electric machine controller control
Motor processed does not enable, and does not work；(3) entire car controller gives an order to electrokinetic cell system, power battery high pressure electricity output；(4)
Entire car controller gives an order to coupling electrical power device, and control is output to the relay closure of range extender system, does not adjust its electric current
Value；(5) entire car controller gives an order to range extender system, and RCU controls engine start；(6) it is wanted according to setting fast charge, trickle charge
It asks, engine output value is calculated in entire car controller, sends this information to RCU, and then control engine operation shape
State drives and increases the work of journey generator, is power battery charging；(7) entire car controller and BMS carry out information exchange, VCU according to
The battery pack SOC and fault message of BMS feedback are electric above and below to control engine start and stop and battery pack high pressure.
Driving charge mode: during vehicle travels on preferable road conditions, engine is big in optimal economic point output power
When travelling demand power and lower battery capacity, engine output is in addition to meeting vehicle traveling, moreover it is possible to be power battery
Charging.
Specific work process is as follows: (1) selecting driving charge mode by control panel；(2) entire car controller is given
Electrokinetic cell system gives an order, power battery high pressure electricity output；(3) entire car controller gives an order to coupling electrical power device, control
It is output to the relay closure of range extender system；(4) entire car controller gives an order to range extender system, and RCU control engine opens
It is dynamic；(5) entire car controller issues power request to RCU according to engine optimal economic point rotational speed and torque value, and engine is allowed to fire
It is run under oily economy optimum condition, and exports firm power；(6) coupling electrical power device starts charge mode, changes electrical power
Coupler is output to battery pack current direction, so that increasing journey output generator current can drive vehicle driving and be battery
Packet charging；(7) entire car controller and BMS carry out information exchange, and VCU reminds driving according to the real time information that BMS, MCU are fed back
Member selects suitable operating mode.
Pure motor driving mode: as the specific special vehicle of functional localization, it is desirable that vehicle running noise is low, and herein
Under operating mode, vehicle is with the advantages that fast response time, instantaneous output power is big, zero-emission.It is greater than lower limit in battery capacity
When threshold value, and vehicle traveling demand power be less than power battery output peak power when, driver may be selected vehicle in pure electricity
Dynamic model formula first travels.
Specific work process is as follows: (1) selecting pure motor driving operating mode by control panel；(2) entire car controller
It gives an order to electrokinetic cell system, power battery high pressure electricity output；(3) entire car controller gives an order to coupling electrical power device, makes
It is in enabled state；(4) vehicle control unit controls coupling electrical power device is the disconnection of range extender system power supply high voltage relay, is kept away
Exempt from range extender system maloperation；(5) entire car controller gives an order to electric drive system, control driving motor work, and then controls whole
Vehicle traveling；(6) entire car controller and BMS carry out information exchange, and VCU controls motor according to the information of BMS, MCU Real-time Feedback
Revolving speed and torque output, and driver is reminded to select suitable operating mode.
Mixed dynamic driving mode: when vehicle traveling encounters limiting condition, such as climb very steep slopes, obstacle-overpass, i.e. vehicle travel load function
When rate is greater than constant engine output power and power battery maximum output, needs to open mixed dynamic model formula, pass through electrical power
Coupler is coupled two power source output electric energy to obtain sufficiently large power, driving vehicle traveling.
Specific work process is as follows: (1) passing through the mixed dynamic travel operation mode of control panel selection；(2) entire car controller is given
Electrokinetic cell system gives an order, power battery high pressure electricity output；(3) entire car controller gives an order to coupling electrical power device, control
It is output to the relay closure of range extender system；(4) entire car controller gives an order to range extender system, and RCU control engine opens
It is dynamic；(5) RCU controls engine and runs under constant duty, exports rated power；(6) control coupling electrical power device is in electric discharge
State, adjusting are output to battery pack current direction, make battery pack output electric current with journey output generator current interflow is increased to drive
Motor operation；(7) entire car controller and BMS carry out information exchange, and VCU drives according to the information of BMS, MCU Real-time Feedback to remind
The person of sailing selects suitable operating mode.
Brake energy recovery mode: the kinetic energy of vehicle is converted into electric energy and is stored in power battery pack when vehicle is braked,
To improve capacity usage ratio and course continuation mileage.Brake energy recovery is present in each driving mode.It can be by vehicle system
Whether motor leads to high-voltage electricity to control energy recovery function start and stop when dynamic.
Embodiment provided by the present invention at least can be realized following technical effect: the oil electricity based on coupling electrical power is mixed dynamic
Scheme adjusts current direction by coupling electrical power device to realize the reasonable distribution of two power sources, and structure is simple, operation side
Just；Coupling electrical power scheme reduces mechanical transmission component, and space hold is small, and work efficiency is high and for ease of maintenaince maintains；Increase journey
When device system works, engine is constantly in optimal economic regional work, saves fuel oil, reduces discharge；The electricity of two power sources
Power coupling driving motor operation, fast response time, instantaneous output power is big, meets the full landform road horsepower need of special vehicle
It asks.
Any technical solution disclosed in aforementioned present invention unless otherwise stated, if it discloses numberical range,
Disclosed numberical range is preferred numberical range, and any it should be appreciated by those skilled in the art preferred numberical ranges
The only obvious or representative numerical value of technical effect in many enforceable numerical value.It, can not since numerical value is more
Exhaustion, so the present invention just discloses technical solution of the component values to illustrate the present invention, also, the above-mentioned numerical value enumerated is not
The limitation to the invention protection scope should be constituted.
If the words such as " first ", " second " are used herein come if limiting components, those skilled in the art are answered
This knows: the use of " first ", " second " is intended merely to facilitate in description and is distinguished components as not having Stated otherwise
Outside, above-mentioned word has no special meaning.
Meanwhile if aforementioned present invention discloses or relates to the components or structural member of connection fastened to each other, except another
There is statement outer, is fixedly connected it is to be understood that connection (such as using bolt or screw connection) can be removedly fixed, it can also be with
Understand are as follows: non-removable to be fixedly connected with (such as riveting, welding), certainly, connection fastened to each other or integral structure
(such as manufacturing using casting technique is integrally formed) is replaced (obviously can not be using except integrally formed technique).
In addition, for indicating the art of positional relationship or shape applied in any technical solution disclosed in aforementioned present invention
Its meaning includes approximate with its, similar or close state or shape to language unless otherwise stated.Either component provided by the invention
Either being assembled by multiple individual component parts, or the separate part that integrally formed technique manufactures.
In the description of the present invention if used term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", " left side ",
" right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" etc., then the orientation or positional relationship of above-mentioned term instruction is base
In orientation or positional relationship shown in the drawings, it is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion
Signified equipment, mechanism, component or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limiting the scope of the invention.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (20)
1. a kind of hybrid vehicle characterized by comprising
Electrokinetic cell system；
Range extender system；
Electric drive system is electrically connected with the electrokinetic cell system and the range extender system respectively, can utilize electricity energy driven vehicle
Movement；And
Coupling electrical power device, for realizing the electrokinetic cell system, the range extender system and the electric drive system it
Between current control.
2. hybrid vehicle according to claim 1, which is characterized in that the coupling electrical power device includes:
First coupler is set between the electrokinetic cell system and the electric drive system, can control the power battery
The size and Orientation of electric current between system and the electric drive system.
3. hybrid vehicle according to claim 1, which is characterized in that the coupling electrical power device includes:
Second coupler is set between the range extender system and the electrokinetic cell system, can control the distance increasing unit
The size and Orientation of electric current between system and the electrokinetic cell system.
4. hybrid vehicle according to claim 2, which is characterized in that first coupler is also arranged at described
Between range extender system and the electrokinetic cell system, it can control between the range extender system and the electrokinetic cell system
The size and Orientation of electric current.
5. hybrid vehicle according to claim 4, which is characterized in that first coupler can be by adjusting certainly
The coupling electrical power of body adjusts the ratio of the electrokinetic cell system and the range extender system electrical power.
6. hybrid vehicle according to claim 4, which is characterized in that the range extender system is exported with constant voltage
Electric energy, first coupler by control itself sense of current, control the electrokinetic cell system be in charged state or
Discharge condition.
7. hybrid vehicle according to claim 4, which is characterized in that the hybrid vehicle includes:
Relay is set between the coupling electrical power device and the range extender system, for controlling the electrical power coupling
Attach together the on-off for setting the circuit between the range extender system.
8. hybrid vehicle according to claim 1, which is characterized in that the hybrid vehicle includes: vehicle control
Unit VCU processed；
The electrokinetic cell system includes: battery pack and the remaining capacity VOC and fault message that can report the battery pack
Battery management unit BMS；
The range extender system includes: engine, the generator connecting with the engine power and can control the hair
The range extender system control unit RCU of motivation start-stop and output power；
The electric drive system includes: driving motor and the driving motor control unit that can report the driving motor torque
MCU；
The coupling electrical power device includes: coupling electrical power device and can control the coupling electrical power device couple current
Coupling Control Unit CCU；
Wherein, the BMS, the RCU, the MCU and the equal communication connection of the CCU are in the VCU.
9. hybrid vehicle according to claim 8, which is characterized in that the generator is electric-driving generation integrating machine,
The electrokinetic cell system can power for the electric-driving generation integrating machine, so that the engine has initial speed.
10. a kind of control method based on any hybrid vehicle of claim 1~9, which is characterized in that the control
Method processed includes:
The electricity for measuring the electric drive system drives the remaining capacity VOC of torque and the battery system；And
Torque and the VOC are driven according to the electricity, controls the range extender system, the electric drive system and the electrical power
Coupling device is in different setting operating conditions, so that the hybrid vehicle be made to be in different operating modes.
11. the control method of hybrid vehicle according to claim 10, which is characterized in that the control method packet
It includes:
When the electricity drives torque and is lower than the first setting value lower than the first setting torque, the VOC, make the range extender system work
Make in the first setting operating condition, and the coupling electrical power device is made to be in the first coupling operating condition, to make the hybrid electric vehicle
In driving charge mode.
12. control method according to claim 11, which is characterized in that the control method includes:
When the VOC is higher than the second setting value, so that the range extender system is in the second setting operating condition and make the electrical power
Coupling device is in the second coupling operating condition, so that the hybrid vehicle be made to be in electric running mode；
Wherein, second setting value is lower than first setting value.
13. control method according to claim 11, which is characterized in that the control method includes:
When the electricity drives torque and is higher than the first setting torque, the VOC higher than the second setting value, make the range extender system work
Make in the first setting operating condition and the coupling electrical power device is made to be in third coupling operating condition, to make the hybrid electric vehicle
In the first mixed dynamic driving mode；
Wherein, second setting value is lower than first setting value.
14. control method according to claim 11, which is characterized in that the control method includes:
When the VOC is higher than the second setting value, the electricity drives torque higher than the second setting torque, make the range extender system work
Make in the second setting operating condition and the coupling electrical power device is made to be in third coupling operating condition, to make the hybrid electric vehicle
In the second mixed dynamic driving mode；
Wherein, the second setting torque is greater than the first setting torque, and second setting value is lower than first setting
Value.
15. control method according to claim 12, which is characterized in that be in described the in the coupling electrical power device
When two coupling operating conditions, disconnect the circuit of the range extender system and the battery system.
16. 3 or 14 any control method according to claim 1, which is characterized in that at the coupling electrical power device
When the third couples operating condition, disconnect the circuit of the range extender system and the battery system.
17. control method according to claim 11, which is characterized in that the control method includes:
When the VOC is lower than the second setting value, the coupling electrical power device is made to be in the first coupling operating condition, the distance increasing unit
System is in the first setting operating condition, the electric drive system does not work, so that the hybrid vehicle be made to be in parking charging mould
Formula；
Wherein, second setting value is lower than first setting value.
18. 1~14 any control method according to claim 1, which is characterized in that the control method includes:
Under the hybrid vehicle on-position, so that the electric drive system is in generating state and make the electrical power coupling
It attaches together and sets in the first coupling operating condition, so that vehicle braking energy be made to be recycled to the electrokinetic cell system.
19. 1~14 any control method according to claim 1, which is characterized in that the control method includes:
Before the range extender system and the coupling electrical power device are in running order, enter the driving motor enabled
State.
20. control method according to claim 11, which is characterized in that the control method includes:
According to the information that the BMS and MCU is reported, optional operating mode is provided for driver, for the driving
Personnel independently select；And
When the operating mode that the driver independently selects does not meet the VOC of setting and electricity drives torque demand, give a warning
Information.
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| CN109760524B (en) | 2021-10-12 |
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Effective date of registration: 20220726 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |