CN109774701A - Parallel type hybrid dynamic switching method and computer readable storage medium - Google Patents
Parallel type hybrid dynamic switching method and computer readable storage medium Download PDFInfo
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Abstract
The invention discloses a kind of parallel type hybrid dynamic switching method and computer readable storage medium, method includes: to obtain the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and minimum grade value；Generate the oily switch line of electricity；Generate oily cutting thread-changing；Determine hybrid power region；The current vehicle speed and current hill grade value of vehicle are acquired, and according to the current vehicle speed, current hill grade value, the oily switch line of electricity, oily cutting thread-changing and hybrid power region, determines the power drive mode of vehicle.The present invention can effectively adapt to external geographic basis, and fuel utilization ratio and power utilization rate can be improved.
Description
Technical field
The present invention relates to powershift technical field more particularly to a kind of parallel type hybrid dynamic switching methods and computer
Readable storage medium storing program for executing.
Background technique
Currently based on the hybrid electric vehicle of motor and engine parallel connection, using the electric energy of battery when vehicle starts
Motor-driven vehicle is individually driven, the engine for restarting fuel oil after reaching certain speed separately or cooperatively drives vehicle.This
Sample can be to avoid when just starting, and fuel engines operates in the excessive fuel consumption section of slow-speed of revolution high torque, by motor driven in vehicle
After speed mentions certain speed, restart engine driving, engine can be made to operate in the relatively reasonable economy of revolving speed once starting
Section, so that vehicle be helped to improve fuel oil utilization efficiency.
However, existing hybrid electric vehicle switches from electric energy to fuel power is substantially a kind of static switching, such as when
When speed reaches a certain fixed threshold, the powershift by motor to engine is executed.Such mode cannot effectively adapt to outer
Portion's geographic basis.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of parallel type hybrid dynamic switching method and computer-readable
Storage medium can effectively adapt to external geographic basis, and fuel utilization ratio and power utilization rate can be improved.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted by the present invention are as follows: parallel type hybrid dynamic switching side
Method, comprising:
Obtain the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and most clivia
Angle value；
According to the minimum speed, the max speed, ruling grade value and minimum grade value, the oily switch line of electricity is generated；
It is raw according to the minimum speed, the max speed, ruling grade value, minimum grade value and preset speed distance
At oily cutting thread-changing；
According to the minimum speed, the max speed and preset pace of change and changing slope, hybrid power area is determined
Domain；
The current vehicle speed and current hill grade value of vehicle are acquired, and according to the current vehicle speed, current hill grade value, electricity oil switching
Line, oily cutting thread-changing and hybrid power region, determine the power drive mode of vehicle.
The invention further relates to a kind of computer readable storage mediums, are stored thereon with computer program, and described program is located
Reason device performs the steps of when executing
Obtain the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and most clivia
Angle value；
According to the minimum speed, the max speed, ruling grade value and minimum grade value, the oily switch line of electricity is generated；
It is raw according to the minimum speed, the max speed, ruling grade value, minimum grade value and preset speed distance
At oily cutting thread-changing；
According to the minimum speed, the max speed and preset pace of change and changing slope, hybrid power area is determined
Domain；
The current vehicle speed and current hill grade value of vehicle are acquired, and according to the current vehicle speed, current hill grade value, electricity oil switching
Line, oily cutting thread-changing and hybrid power region, determine the power drive mode of vehicle.
The beneficial effects of the present invention are: pass through the maximum for analyzing the minimum speed that can run of engine, motor can be run
Speed and ruling grade value and minimum grade value, the oily switch line of electricity for being switched to fuel power from electric power when obtaining speed-raising, and
The oily cutting thread-changing of electric power is switched to from fuel power when vehicle reduction of speed and switch line intersecting area delimit power combination drive
Then region constantly acquires the current speed of vehicle and the angle for being presently in the gradient in vehicle travel process, according to electric oil
Whether switch line, oily cutting thread-changing and hybrid power regional search current angular and the corresponding state of speed reach switching condition,
Thereby executing the switching of more efficiently electric power to fuel power.The present invention can effectively adapt to external geographic basis, and can be improved
Fuel utilization ratio and power utilization rate.
Detailed description of the invention
Fig. 1 is a kind of flow chart of parallel type hybrid dynamic switching method of the present invention；
Fig. 2 is the method flow diagram of the embodiment of the present invention one；
Fig. 3 is the schematic diagram of the oily switch line of electricity of the embodiment of the present invention one, oily cutting thread-changing and hybrid power region.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained in detail.
The most critical design of the present invention is: by formulating switching at runtime line and hybrid power region, in conjunction with current vehicle
Speed and the locating gradient angle, dynamically switch over control.
Referring to Fig. 1, a kind of parallel type hybrid dynamic switching method, comprising:
Obtain the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and most clivia
Angle value；
According to the minimum speed, the max speed, ruling grade value and minimum grade value, the oily switch line of electricity is generated；
It is raw according to the minimum speed, the max speed, ruling grade value, minimum grade value and preset speed distance
At oily cutting thread-changing；
According to the minimum speed, the max speed and preset pace of change and changing slope, hybrid power area is determined
Domain；
The current vehicle speed and current hill grade value of vehicle are acquired, and according to the current vehicle speed, current hill grade value, electricity oil switching
Line, oily cutting thread-changing and hybrid power region, determine the power drive mode of vehicle.
As can be seen from the above description, the beneficial effects of the present invention are: external geographic basis can be effectively adapted to, and combustion can be improved
Oily utilization rate and power utilization rate.
Further, described " to obtain the minimum speed that run of engine, the max speed that motor can be run and maximum
Value of slope and minimum grade value " specifically:
According to the engine characteristics of vehicle, the minimum speed that engine can be run is obtained；
According to the specified vehicle rotary speed property of motor, the max speed that motor can be run is obtained；
According to highway layout specification, ruling grade value and minimum grade value are obtained.
Further, described " according to the minimum speed, the max speed, ruling grade value and minimum grade value, to generate electricity
Oily switch line " specifically:
Using speed as abscissa, using the gradient as ordinate, two-dimensional Cartesian coordinate system is established；
According to the minimum speed and minimum grade value, obtain at first point；
According to the max speed and ruling grade value, second point is obtained；
According to and second point, the oily switch line of electricity is generated at described first point.
Further, described " according to the minimum speed, the max speed, ruling grade value, minimum grade value and to preset
Speed distance, generate oily cutting thread-changing " specifically:
According to the minimum speed, minimum grade value and preset speed distance, obtain thirdly；
According to the max speed, ruling grade value and preset speed distance, obtain at the 4th point；
According to it is described thirdly with the 4th point, generate oily cutting thread-changing.
Further, described " current vehicle speed and current hill grade value of acquisition vehicle, and according to the current vehicle speed, current
The oily switch line of value of slope, electricity, oily cutting thread-changing and hybrid power region, determine the power drive mode of vehicle " specifically:
Acquire the current vehicle speed and current hill grade value of vehicle；
If current vehicle speed and current hill grade value are in the hybrid power region, combination drive is used；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently motor drivens, then basis
Current hill grade value and the oily switch line of the electricity, are calculated First Speed；
If current vehicle speed is greater than the First Speed, it is switched to engine driving, otherwise keeps motor driven；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently engine drivings, then root
According to current hill grade value and the oily cutting thread-changing, second speed is calculated；
If current vehicle speed is less than the second speed, it is switched to motor driven, otherwise keeps engine driving.
The invention further relates to a kind of computer readable storage mediums, are stored thereon with computer program, and described program is located
Reason device performs the steps of when executing
Obtain the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and most clivia
Angle value；
According to the minimum speed, the max speed, ruling grade value and minimum grade value, the oily switch line of electricity is generated；
It is raw according to the minimum speed, the max speed, ruling grade value, minimum grade value and preset speed distance
At oily cutting thread-changing；
According to the minimum speed, the max speed and preset pace of change and changing slope, hybrid power area is determined
Domain；
The current vehicle speed and current hill grade value of vehicle are acquired, and according to the current vehicle speed, current hill grade value, electricity oil switching
Line, oily cutting thread-changing and hybrid power region, determine the power drive mode of vehicle.
Further, described " to obtain the minimum speed that run of engine, the max speed that motor can be run and maximum
Value of slope and minimum grade value " specifically:
According to the engine characteristics of vehicle, the minimum speed that engine can be run is obtained；
According to the specified vehicle rotary speed property of motor, the max speed that motor can be run is obtained；
According to highway layout specification, ruling grade value and minimum grade value are obtained.
Further, described " according to the minimum speed, the max speed, ruling grade value and minimum grade value, to generate electricity
Oily switch line " specifically:
Using speed as abscissa, using the gradient as ordinate, two-dimensional Cartesian coordinate system is established；
According to the minimum speed and minimum grade value, obtain at first point；
According to the max speed and ruling grade value, second point is obtained；
According to and second point, the oily switch line of electricity is generated at described first point.
Further, described " according to the minimum speed, the max speed, ruling grade value, minimum grade value and to preset
Speed distance, generate oily cutting thread-changing " specifically:
According to the minimum speed, minimum grade value and preset speed distance, obtain thirdly；
According to the max speed, ruling grade value and preset speed distance, obtain at the 4th point；
According to it is described thirdly with the 4th point, generate oily cutting thread-changing.
Further, described " current vehicle speed and current hill grade value of acquisition vehicle, and according to the current vehicle speed, current
The oily switch line of value of slope, electricity, oily cutting thread-changing and hybrid power region, determine the power drive mode of vehicle " specifically:
Acquire the current vehicle speed and current hill grade value of vehicle；
If current vehicle speed and current hill grade value are in the hybrid power region, combination drive is used；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently motor drivens, then basis
Current hill grade value and the oily switch line of the electricity, are calculated First Speed；
If current vehicle speed is greater than the First Speed, it is switched to engine driving, otherwise keeps motor driven；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently engine drivings, then root
According to current hill grade value and the oily cutting thread-changing, second speed is calculated；
If current vehicle speed is less than the second speed, it is switched to motor driven, otherwise keeps engine driving.
Embodiment one
Referring to figure 2. -3, the embodiment of the present invention one are as follows: a kind of parallel type hybrid dynamic switching method can be applied to base
In the hybrid electric vehicle of motor and engine parallel connection, as shown in Fig. 2, including the following steps:
S1: the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and most are obtained
Clivia angle value.Specifically, since lower than minimum speed starting engine engine misses can be led to because gearing factor is too small, because
This need to obtain the minimum speed that engine can be run according to the engine characteristics of vehicle；Start motor due to being greater than the max speed
Electricity can need to be obtained according to the specified vehicle rotary speed property of motor because motor operates risk that is too fast and generating coil burnout
The max speed that machine can be run；It also needs to obtain ruling grade value and minimum grade value according to highway layout specification.Further,
According to China's highway layout specification, in urban road and highway, the maximum allowable gradient is 5 degree, therefore ruling grade value
Smax=5 degree, minimum grade value Smin=-5 degree (degree, which is negative, indicates descending).
S2: according to the minimum speed, the max speed, ruling grade value and minimum grade value, the oily switch line of electricity is generated.Tool
Body, using speed as abscissa, using the gradient as ordinate, establish two-dimensional Cartesian coordinate system；According to the minimum speed and minimum
Value of slope obtains at first point；According to the max speed and ruling grade value, second point is obtained；According to described first point and
, generate the oily switch line of electricity at 2 points.
As shown in figure 3, engine, which can be run minimum vehicle velocity V min and minimum grade value Smin, is paired at first point
Motor can be run the max speed Vmax and ruling grade value Smax is paired into second point (Vmax, Smax) by (Vmin, Smin),
On speed-angle of slope two-dimensional space, point (Vmin, Smin) and (Vmax, Smax) are connected and generate the oily switch line of electricity-.
S3: according to the minimum speed, the max speed, ruling grade value, minimum grade value and preset speed distance,
Generate oily cutting thread-changing.Vehicle just driving status fluctuates near switch line in order to prevent, causes the oily powerhouse of electricity-repeatedly
Frequent switching leads to two dynamical system frequent start-stops, it is also necessary to formulate an individual oil-cutting thread-changing, switch with electricity-oil
Line pulls open a certain distance, avoids frequent switching.Specifically, according to the minimum speed, minimum grade value and preset speed
Distance obtains thirdly；According to the max speed, ruling grade value and preset speed distance, obtain at the 4th point；According to institute
State thirdly with the 4th point, generate oily cutting thread-changing.
As shown in figure 3, taking a speed distance, delta, thirdly (Vmin+ Δ, Smin) and the 4th point of (Vmax- are obtained
Δ, Smax), it is connected and generates oil-cutting thread-changing.Wherein, Δ generally requires to be greater than 2km/h, is less than 5km/h.
S4: according to the minimum speed, the max speed and preset pace of change and changing slope, hybrid power is determined
Region.Since the oily switch line of electricity-and oil-cutting thread-changing have the part of intersection.In the partial line of intersection very close to easily causing two
Frequent switching between a system.Therefore in this region, two systems should be worked at the same time, and drive vehicle.As shown in figure 3, phase
The central point gradient for handing over part is 0, and speed is Vmid=(Vmin+Vmax)/2.Default pace of change δ and changing slope Δ θ, then
Intersecting area is that the gradient is [- Δ θ, Δ θ], and speed is a rectangular area of [Vmid- δ, Vmid+ δ] interval range composition,
As hybrid power region.Wherein, pace of change δ generally requires to be less than 5km/h, and changing slope Δ θ is generally required less than 0.5
Degree.
S5: the current vehicle speed and current hill grade value of vehicle are acquired；Acquire signal in real time in vehicle travel process, including from
Obliquity sensor collect vehicle be presently in the gradient value of slope θ and from car speed instrument to collect to current vehicle speed V.When
Preceding value of slope θ maximum takes 5 degree, and minimum takes -5 degree to take θ=5 that is, if angle, θ is greater than 5 degree, spends if being less than -5, take θ=-
5。
S6: judge whether current vehicle speed and current hill grade value are in the hybrid power region, i.e. θ ∈ [- Δ θ, Δ θ]
And whether V ∈ [Vmid- δ, Vmid+ δ] is true, if so, S7 is thened follow the steps, if it is not, thening follow the steps S8.
S7: using combination drive, and even current vehicle is in and is driven by electricity, then opens engine simultaneously and drive jointly, if
Current vehicle is in engine driving, then opens electric motor power simultaneously and drive jointly.
S8: whether be motor driven, if so, thening follow the steps S9, if not if judging vehicle currently, then it represents that current is to start
Machine driving, executes step S13.
S9: according to current hill grade value and the oily switch line of the electricity, First Speed is calculated, i.e., according to current angle of slope θ
Calculate corresponding First Speed V1 in the oily switch line of electricity-.
S10: judging whether current vehicle speed is greater than the First Speed, i.e., whether V > V1 is true, if so, thening follow the steps
S11, if it is not, thening follow the steps S12.
S11: it is switched to engine driving.
S12: motor driven is kept.
S13: according to current hill grade value and the oily cutting thread-changing, second speed is calculated, i.e., according to current angle of slope θ
Calculate corresponding second speed V2 in oil-cutting thread-changing.
S14: judging whether current vehicle speed is less than the second speed, i.e., whether V < V2 is true, if so, thening follow the steps
S15, if it is not, thening follow the steps S16.
S15: it is switched to motor driven.
S16: engine driving is kept.
Further, after step S11, S12, S15 and S16, S5 is returned to step.
Due to the characteristic of motor, when motor is in light-load state, the utilization efficiency of power supply is lower, therefore at vehicle
When descending section, since the torque needed for starting is smaller, motor is in light-load state, should be switched to fuel oil as early as possible at this time
Engine driving reduces the motor inefficient working time, and the torque as needed for descending is smaller, relatively early to be switched to engine driving
Engine operation will not be made in the excessive fuel consumption section of slow-speed of revolution high torque, therefore descending section more early switches in motor and engine
Both ends can obtain better energy utilization efficiency.It equally is in uphill way in vehicle, since motor is under heavy load state
The utilization rate of power supply is high, it should which delayed switching opportunity is switched to engine driving in higher speed again, electricity can be improved in this way
The utilization rate in source.
It present embodiments provides a kind of using obliquity sensor, carrys out optimal control oil and electricity hybrid vehicle in the Shi You electricity that starts
Machine drives the method for being switched to engine driving opportunity.For motor driven F-Zero and road grade design specification, in vehicle
On speed-angle of slope two-dimensional space, engine is switched to when motor is switched to the switch line and reduction of speed of engine when generating speed-raising
The switch line of motor.The two parameter powershift figures that switch line forms sensor angles and speed combines.In vehicle driving
In the process, sensor angles and speed are constantly acquired, searches whether to meet switching condition from two parameter switching figures, thereby executing
Switching of the more efficiently electric power to fuel power.
Embodiment two
The present embodiment is a kind of computer readable storage medium of corresponding above-described embodiment, is stored thereon with computer journey
Sequence performs the steps of when described program is executed by processor
Obtain the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and most clivia
Angle value；
According to the minimum speed, the max speed, ruling grade value and minimum grade value, the oily switch line of electricity is generated；
It is raw according to the minimum speed, the max speed, ruling grade value, minimum grade value and preset speed distance
At oily cutting thread-changing；
According to the minimum speed, the max speed and preset pace of change and changing slope, hybrid power area is determined
Domain；
The current vehicle speed and current hill grade value of vehicle are acquired, and according to the current vehicle speed, current hill grade value, electricity oil switching
Line, oily cutting thread-changing and hybrid power region, determine the power drive mode of vehicle.
Further, described " to obtain the minimum speed that run of engine, the max speed that motor can be run and maximum
Value of slope and minimum grade value " specifically:
According to the engine characteristics of vehicle, the minimum speed that engine can be run is obtained；
According to the specified vehicle rotary speed property of motor, the max speed that motor can be run is obtained；
According to highway layout specification, ruling grade value and minimum grade value are obtained.
Further, described " according to the minimum speed, the max speed, ruling grade value and minimum grade value, to generate electricity
Oily switch line " specifically:
Using speed as abscissa, using the gradient as ordinate, two-dimensional Cartesian coordinate system is established；
According to the minimum speed and minimum grade value, obtain at first point；
According to the max speed and ruling grade value, second point is obtained；
According to and second point, the oily switch line of electricity is generated at described first point.
Further, described " according to the minimum speed, the max speed, ruling grade value, minimum grade value and to preset
Speed distance, generate oily cutting thread-changing " specifically:
According to the minimum speed, minimum grade value and preset speed distance, obtain thirdly；
According to the max speed, ruling grade value and preset speed distance, obtain at the 4th point；
According to it is described thirdly with the 4th point, generate oily cutting thread-changing.
Further, described " current vehicle speed and current hill grade value of acquisition vehicle, and according to the current vehicle speed, current
The oily switch line of value of slope, electricity, oily cutting thread-changing and hybrid power region, determine the power drive mode of vehicle " specifically:
Acquire the current vehicle speed and current hill grade value of vehicle；
If current vehicle speed and current hill grade value are in the hybrid power region, combination drive is used；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently motor drivens, then basis
Current hill grade value and the oily switch line of the electricity, are calculated First Speed；
If current vehicle speed is greater than the First Speed, it is switched to engine driving, otherwise keeps motor driven；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently engine drivings, then root
According to current hill grade value and the oily cutting thread-changing, second speed is calculated；
If current vehicle speed is less than the second speed, it is switched to motor driven, otherwise keeps engine driving.
In conclusion a kind of parallel type hybrid dynamic switching method provided by the invention and computer readable storage medium,
By analyzing the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and minimum grade
Value is switched to electricity from fuel power when being switched to the electricity oil switch line and vehicle reduction of speed of fuel power when obtaining speed-raising from electric power
The oily cutting thread-changing of power and switch line intersecting area delimit power combination drive region, then in vehicle travel process not
The current speed of disconnected acquisition vehicle and the angle for being presently in the gradient, according to electric oily switch line, oily cutting thread-changing and hybrid power
Whether regional search current angular and the corresponding state of speed reach switching condition, thereby executing more efficiently electric power to fuel oil
The switching of power.The present invention can effectively adapt to external geographic basis, and fuel utilization ratio and power utilization rate can be improved.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (10)
1. a kind of parallel type hybrid dynamic switching method characterized by comprising
Obtain the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and minimum grade
Value；
According to the minimum speed, the max speed, ruling grade value and minimum grade value, the oily switch line of electricity is generated；
According to the minimum speed, the max speed, ruling grade value, minimum grade value and preset speed distance, oil is generated
Cutting thread-changing；
According to the minimum speed, the max speed and preset pace of change and changing slope, hybrid power region is determined；
Acquire the current vehicle speed and current hill grade value of vehicle, and according to the current vehicle speed, current hill grade value, the oily switch line of electricity,
Oily cutting thread-changing and hybrid power region determine the power drive mode of vehicle.
2. parallel type hybrid dynamic switching method according to claim 1, which is characterized in that described " obtaining engine can
The max speed and ruling grade value and minimum grade value that the minimum speed of operation, motor can be run " specifically:
According to the engine characteristics of vehicle, the minimum speed that engine can be run is obtained；
According to the specified vehicle rotary speed property of motor, the max speed that motor can be run is obtained；
According to highway layout specification, ruling grade value and minimum grade value are obtained.
3. parallel type hybrid dynamic switching method according to claim 1, which is characterized in that described " according to the minimum
Speed, the max speed, ruling grade value and minimum grade value generate the oily switch line of electricity " specifically:
Using speed as abscissa, using the gradient as ordinate, two-dimensional Cartesian coordinate system is established；
According to the minimum speed and minimum grade value, obtain at first point；
According to the max speed and ruling grade value, second point is obtained；
According to and second point, the oily switch line of electricity is generated at described first point.
4. parallel type hybrid dynamic switching method according to claim 3, which is characterized in that described " according to the minimum
Speed, the max speed, ruling grade value, minimum grade value and preset speed distance generate oily cutting thread-changing " specifically:
According to the minimum speed, minimum grade value and preset speed distance, obtain thirdly；
According to the max speed, ruling grade value and preset speed distance, obtain at the 4th point；
According to it is described thirdly with the 4th point, generate oily cutting thread-changing.
5. parallel type hybrid dynamic switching method according to claim 1, which is characterized in that described " to acquire working as vehicle
Preceding speed and current hill grade value, and according to the current vehicle speed, current hill grade value, the oily switch line of electricity, oily cutting thread-changing and mixing
Powering region determines the power drive mode of vehicle " specifically:
Acquire the current vehicle speed and current hill grade value of vehicle；
If current vehicle speed and current hill grade value are in the hybrid power region, combination drive is used；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently motor drivens, then according to current
Value of slope and the oily switch line of the electricity, are calculated First Speed；
If current vehicle speed is greater than the First Speed, it is switched to engine driving, otherwise keeps motor driven；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently engine drivings, then basis is worked as
Preceding value of slope and the oily cutting thread-changing, are calculated second speed；
If current vehicle speed is less than the second speed, it is switched to motor driven, otherwise keeps engine driving.
6. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that described program is by processor
It is performed the steps of when execution
Obtain the minimum speed that can run of engine, the max speed that motor can be run and ruling grade value and minimum grade
Value；
According to the minimum speed, the max speed, ruling grade value and minimum grade value, the oily switch line of electricity is generated；
According to the minimum speed, the max speed, ruling grade value, minimum grade value and preset speed distance, oil is generated
Cutting thread-changing；
According to the minimum speed, the max speed and preset pace of change and changing slope, hybrid power region is determined；
Acquire the current vehicle speed and current hill grade value of vehicle, and according to the current vehicle speed, current hill grade value, the oily switch line of electricity,
Oily cutting thread-changing and hybrid power region determine the power drive mode of vehicle.
7. computer readable storage medium according to claim 6, which is characterized in that described " obtaining engine can run
Minimum speed, the max speed that can run of motor and ruling grade value and minimum grade value " specifically:
According to the engine characteristics of vehicle, the minimum speed that engine can be run is obtained；
According to the specified vehicle rotary speed property of motor, the max speed that motor can be run is obtained；
According to highway layout specification, ruling grade value and minimum grade value are obtained.
8. computer readable storage medium according to claim 6, which is characterized in that it is described " according to the minimum speed,
The max speed, ruling grade value and minimum grade value generate the oily switch line of electricity " specifically:
Using speed as abscissa, using the gradient as ordinate, two-dimensional Cartesian coordinate system is established；
According to the minimum speed and minimum grade value, obtain at first point；
According to the max speed and ruling grade value, second point is obtained；
According to and second point, the oily switch line of electricity is generated at described first point.
9. computer readable storage medium according to claim 8, which is characterized in that it is described " according to the minimum speed,
The max speed, ruling grade value, minimum grade value and preset speed distance generate oily cutting thread-changing " specifically:
According to the minimum speed, minimum grade value and preset speed distance, obtain thirdly；
According to the max speed, ruling grade value and preset speed distance, obtain at the 4th point；
According to it is described thirdly with the 4th point, generate oily cutting thread-changing.
10. computer readable storage medium according to claim 6, which is characterized in that described " acquire vehicle works as front truck
Speed and current hill grade value, and according to the current vehicle speed, current hill grade value, the oily switch line of electricity, oily cutting thread-changing and hybrid power
Region determines the power drive mode of vehicle " specifically:
Acquire the current vehicle speed and current hill grade value of vehicle；
If current vehicle speed and current hill grade value are in the hybrid power region, combination drive is used；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently motor drivens, then according to current
Value of slope and the oily switch line of the electricity, are calculated First Speed；
If current vehicle speed is greater than the First Speed, it is switched to engine driving, otherwise keeps motor driven；
If current vehicle speed and current hill grade value are not at the hybrid power region, and are currently engine drivings, then basis is worked as
Preceding value of slope and the oily cutting thread-changing, are calculated second speed；
If current vehicle speed is less than the second speed, it is switched to motor driven, otherwise keeps engine driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112157.3A CN109774701B (en) | 2017-11-13 | 2017-11-13 | Parallel hybrid power switching method and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112157.3A CN109774701B (en) | 2017-11-13 | 2017-11-13 | Parallel hybrid power switching method and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
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| CN109774701A true CN109774701A (en) | 2019-05-21 |
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| CN104417344A (en) * | 2013-09-09 | 2015-03-18 | 比亚迪股份有限公司 | Hybrid electric vehicle and drive control method thereof |
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