CN109591583A - A kind of power output system of electric car, method and electric car - Google Patents
A kind of power output system of electric car, method and electric car Download PDFInfo
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- CN109591583A CN109591583A CN201811601068.XA CN201811601068A CN109591583A CN 109591583 A CN109591583 A CN 109591583A CN 201811601068 A CN201811601068 A CN 201811601068A CN 109591583 A CN109591583 A CN 109591583A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/12—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of electric gearing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
Embodiment of the present invention discloses power output system, method and the electric car of a kind of electric car.System includes: front axle；Rear axle；Front axle retarder, with the preceding axis connection；Rear axle retarder, with the rear axis connection；Electric motor clutch is connect with the rear axle retarder；First motor is connect with the front axle retarder；Second motor is connect with the electric motor clutch；Wherein the output power of the first motor is greater than the output power of second motor.Embodiment of the present invention meets vehicle height respectively and runs at a low speed demand, avoidance lacks the influence of heavy-duty motor and multi gear automatic gear-box to automobile research by the way that different motor and clutch are arranged in antero posterior axis.
Description
Technical field
Embodiment of the present invention is related to electric vehicle engineering field, in particular to a kind of power take-off system of electric car
System, method and electric car.
Background technique
Have in national newest standards " term and definition of automobile and trailer type " (GB/T 3730.1-2001) to automobile
Such as give a definition: by power drive, the vehicle of the non-track carrying with 4 or 4 or more wheels is mainly used for: carrying personnel
And (or) cargo；Draw the vehicle of carrying personnel and (or) cargo；Specific use.Energy shortage, oil crisis and environmental pollution
It grows in intensity, brings tremendous influence to people's lives, be directly related to the sustainable development of national economy and society.The world is each
State is all in active development new energy technology.
Electric car is as a kind of new-energy automobile for reducing consumption of petroleum, low pollution, low noise, it is considered to be solves energy
The important channel of source crisis and environmental degradation.Hybrid vehicle combines the excellent of pure electric automobile and traditional combustion engine automobile
Gesture effectively improves fuel economy, the row of reducing under the premise of meeting vehicle dynamic quality requirement and continual mileage requirement
It puts, it is considered to be one of the active path of current energy conservation and emission reduction.
Electric vehicle is limited by motor performance when carrying out vehicle power matching at present, generally uses following two strategy:
Strategy 1: the motor of selection more high standard is allowed to low speed and demand of running at high speed in satisfaction.
Strategy 2: multidrive is used.
Strategy 1 is suitable for having the case where more high standard motor, if being limited by certain conditions, the motor of more high standard without
Method obtains or needs to pay great cost, then strategy 1 can not be implemented.Strategy 2 increases system complexity, with current multi gear
Automatic transmission is horizontal, there is very big technical risk.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of power output system of electric car, method and electric cars.
The technical solution of embodiment of the present invention is as follows:
A kind of power output system of electric car, comprising:
Front axle；
Rear axle；
Front axle retarder, with the preceding axis connection；
Rear axle retarder, with the rear axis connection；
Electric motor clutch is connect with the rear axle retarder；
First motor is connect with the front axle retarder；
Second motor is connect with the electric motor clutch；
Wherein the output power of the first motor is greater than the output power of second motor.
In one embodiment, further includes:
Entire car controller is connect with the first motor and the electric motor clutch, works as front truck when the electric car
When speed is lower than the predetermined threshold is equal to, control first motor is to the preceding shaft power and controls the electric motor clutch
Connect power output channel of second motor to the rear axle；When the current vehicle speed of the electric car is higher than predetermined threshold
When value, control first motor is to the preceding shaft power and the control electric motor clutch cuts off second motor to described
The power output channel of rear axle.
In one embodiment, the electric motor clutch includes active part and secondary part；
Second motor connects the active part via the first spline；The secondary part is via the second spline and institute
State the input axis connection of rear axle retarder.
In one embodiment, the front axle retarder includes primary speed-down gear, double-reduction gear and differential mechanism；
The input axis connection of the driving wheel of the output shaft of the first motor and the primary speed-down gear；The level-one subtracts
The driven wheel of fast gear is connected via the driving wheel of jackshaft and double-reduction gear；The driven wheel and differential of double-reduction gear
The cage connection of device；The driven wheel of double-reduction gear is engaged with the driving wheel of double-reduction gear；Two outputs of differential mechanism
Semiaxis is separately connected the preceding left half axle and preceding right axle shaft of the front axle.
In one embodiment, the output power of second motor is the one of the output power of the first motor
Half.
A kind of power output method of electric car, the method is suitable for the power output system of electric car, described
The power output system of electric car includes: front axle；Rear axle；First motor is connect with front axle retarder, wherein the front axle subtracts
Fast device and the preceding axis connection；Second motor, connect with electric motor clutch, wherein the electric motor clutch and rear axle retarder connect
It connects, the rear axle retarder and the rear axis connection；Wherein the output power of the first motor is greater than second motor
Output power；This method comprises:
The electric car starting when, control first motor to the preceding shaft power, and control the motor from
Clutch connects power output channel of second motor to the rear axle；
When the current vehicle speed of the electric car is higher than predetermined threshold, electric motor clutch cutting described the is controlled
Two motors continue to control first motor to the preceding shaft power to the power output channel of the rear axle.
In one embodiment, the output power of second motor is the one of the output power of the first motor
Half.
In one embodiment, the electric motor clutch includes active part and secondary part；The second motor warp
The active part is connected by the first spline；The secondary part connects via the input shaft of the second spline and the rear axle retarder
It connects；
The control electric motor clutch connects second motor to the power output channel of the rear axle and includes:
Bind command is received from entire car controller；
The active part is connect with the secondary part based on the bind command.
In one embodiment, the control electric motor clutch cuts off function of second motor to the rear axle
Rate output channel includes；
ON- and OFF- command is received from entire car controller；
The active part and the secondary part are disconnected based on the ON- and OFF- command.
A kind of electric car, the power output system including electric car as described above.
It can be seen from the above technical proposal that in embodiments of the present invention, system includes: front axle；Rear axle；First electricity
Machine is connect with front axle retarder, wherein the front axle retarder and the preceding axis connection；Second motor connects with electric motor clutch
It connects, wherein the electric motor clutch is connect with rear axle retarder, the rear axle retarder and the rear axis connection；Wherein described
The output power of one motor is greater than the output power of second motor.As it can be seen that by antero posterior axis be arranged different motor and
Clutch meets vehicle height respectively and runs at a low speed demand, and avoidance lacks heavy-duty motor and multi gear automatic gear-box opens vehicle
The influence of hair.
Detailed description of the invention
Only illustratively description and explain the present invention for the following drawings, not delimit the scope of the invention.
Fig. 1 is the structure chart of the power output system of electric car of the present invention.
Fig. 2 is the demonstrative structure figure of the power output system of electric car of the present invention.
Fig. 3 is the flow chart of the power output method of electric car of the present invention.
Fig. 4 is the tractive force curve synoptic diagram of electric car of the present invention.
Fig. 5 is the power-balance curve synoptic diagram of electric car of the present invention.
Specific embodiment
In order to which the technical features, objects and effects of invention are more clearly understood, the Detailed description of the invention present invention is now compareed
Specific embodiment, identical label indicates identical part in the various figures.
It is succinct and intuitive in order to what is described, hereafter by describing several representative embodiments come to side of the invention
Case is illustrated.A large amount of details is only used for helping to understand the solution of the present invention in embodiment.However, it will be apparent that of the invention
Technical solution can be not limited to these details when realizing.In order to avoid unnecessarily having obscured the solution of the present invention, Yi Xieshi
It applies mode not described meticulously, but only gives frame.Hereinafter, " comprising " refers to " including but not limited to ", " root
According to ... " refer to " according at least to ..., but be not limited to according only to ... ".Due to the speech habits of Chinese, hereinafter without spy
When not pointing out the quantity of an ingredient, it is meant that the ingredient is either one or more, or can be regarded as at least one.
In embodiments of the present invention, by the way that different motor and clutch are arranged in antero posterior axis, meet vehicle height respectively
Demand is run at a low speed, avoidance lacks the influence of heavy-duty motor and multi gear automatic gear-box to automobile research.Wherein, preposition big electricity
Machine can not disconnect；Postposition small machine can disconnect；Preposition big motor works (such as 0~260km/h) in the full speed range of vehicle,
And only middle low speed uses (such as 140km/h or less) to postposition small machine.
Fig. 1 is the structure chart of the power output system of electric car of the present invention.
As shown in Figure 1, direction shown in arrow is vehicle forward direction, which includes:
Front axle；
Rear axle；
Front axle retarder, with preceding axis connection；
Rear axle retarder, with rear axis connection；
Electric motor clutch is connect with rear axle retarder；
First motor is connect with front axle retarder；
Second motor, connect with electric motor clutch；
Wherein the output power of first motor is greater than the output power of the second motor.
In embodiments of the present invention, the preposition big motor of high vehicle speeds demand can be met in automobile front-axle arrangement
(i.e. first motor) and matching front axle retarder.Moreover, determination is preposition in middle low speed according to vehicle performance demand
The power and torque notch of big motor, and based on this, to postposition small machine (i.e. the second motor) and with postposition small machine
The rear axle retarder matched carries out type selecting, when working at the same time front and back motor, runs at a low speed demand in vehicle and is met.According to
Postposition small machine and matching rear axle retarder carry out type selecting to the clutch (electric motor clutch) of postposition small machine.
In one embodiment, the power output system further include:
Entire car controller is connect with first motor and electric motor clutch, is equal in advance when the current vehicle speed of electric car is lower than
When determining threshold value, control first motor forward shaft power and control electric motor clutch connect second motor to rear axle
Power output channel；When the current vehicle speed of electric car is higher than predetermined threshold, first motor shaft power forward is controlled
And control electric motor clutch cuts off power output channel of second motor to rear axle.
Preferably, first motor works (such as 0~260km/h) in the full speed range of vehicle, and the second motor is only in
Low speed uses (such as 140km/h or less).
It is furthermore preferred that the output power of the second motor is the half of the output power of first motor.For example, first motor
Output power is 100 kilowatts, and the output power of the second motor is 50 kilowatts.
The above demonstration describes the operating rate range and output power example of first motor and the second motor, this field
Technical staff is not intended to limit the present invention the protection scope of embodiment it is to be appreciated that this description is only exemplary.
Wherein it is possible to using a plurality of types of electric motor clutch, front axle retarder and rear axle retarder.For example, motor from
Clutch includes active part and secondary part；Second motor connects active part via the first spline；Secondary part is via second
The input axis connection of spline and rear axle retarder.
Front axle retarder includes primary speed-down gear, double-reduction gear and differential mechanism；The output shaft of the first motor
With the input axis connection of the driving wheel of the primary speed-down gear；The driven wheel of the primary speed-down gear is via jackshaft and two
The driving wheel connection of grade reduction gearing；The driven wheel of double-reduction gear and the cage connection of differential mechanism；Double-reduction gear
Driven wheel is engaged with the driving wheel of double-reduction gear；Two output axle shafts of differential mechanism are separately connected the front left half of the front axle
Axis and preceding right axle shaft.
Similarly, rear axle retarder includes primary speed-down gear, double-reduction gear and differential mechanism；Electric motor clutch from
Part is moved via the input axis connection of the second spline and the driving wheel of primary speed-down gear；The driven wheel of primary speed-down gear via
The connection of the driving wheel of jackshaft and double-reduction gear；The driven wheel of double-reduction gear and the cage connection of differential mechanism；Second level
The driven wheel of reduction gearing is engaged with the driving wheel of double-reduction gear；Two output axle shafts of differential mechanism are separately connected rear axle
Left half axle and rear right axle shaft afterwards.
Fig. 2 is the demonstrative structure figure of the power output system of electric car of the present invention.
As shown in Fig. 2, the power output system includes:
Front axle 4；
Rear axle 5；
Front axle retarder 1 is connect with front axle 4；
Rear axle retarder 2 is connect with rear axle 5；
Electric motor clutch 3 is connect with rear axle retarder 2；
First motor is connect with front axle retarder 1；
Second motor is connect with electric motor clutch 3；Wherein the output power of first motor is greater than the output work of the second motor
Rate.
Electric motor clutch 3 includes active part and secondary part；Second motor connects active part via the first spline；From
Part is moved via the input axis connection of the second spline and rear axle retarder 2.It is connected when electric motor clutch 3 is received from entire car controller
When order, electric motor clutch 3 is based on bind command and connect active part with secondary part, to connect the second motor to rear axle
5 power output channel.When electric motor clutch 3 receives ON- and OFF- command from entire car controller；Based on ON- and OFF- command by active part
It is disconnected with secondary part, thus cutting power output channel of second motor to rear axle 5.
Front axle retarder 1 includes primary speed-down gear, double-reduction gear and differential mechanism；The output shaft of first motor and one
The input axis connection of the driving wheel of grade reduction gearing；The driven wheel of the primary speed-down gear is via jackshaft and double reduction tooth
The driving wheel of wheel connects；The driven wheel of double-reduction gear and the cage connection of differential mechanism；The driven wheel of double-reduction gear with
The driving wheel of double-reduction gear engages；Two output axle shafts of differential mechanism are separately connected the preceding left half axle and front right half of front axle 4
Axis.
Rear axle retarder 2 includes primary speed-down gear, double-reduction gear and differential mechanism；The follower of electric motor clutch 3
Lease making by the second spline and the driving wheel of primary speed-down gear input axis connection；The driven wheel of primary speed-down gear is via centre
The connection of the driving wheel of axis and double-reduction gear；The driven wheel of double-reduction gear and the cage connection of differential mechanism；Double reduction
The driven wheel of gear is engaged with the driving wheel of double-reduction gear；After two output axle shafts of differential mechanism are separately connected rear axle 5
Left half axle and rear right axle shaft.
Based on foregoing description, embodiment of the present invention also proposed a kind of power output method of electric car.
Fig. 3 is the flow chart of the power output method of electric car of the present invention.This method is suitable for the power of electric car
Output system, the power output system of electric car include: front axle；Rear axle；First motor is connect with front axle retarder, wherein
Front axle retarder and preceding axis connection；Second motor, connect with electric motor clutch, and wherein electric motor clutch and rear axle retarder connect
It connects, rear axle retarder and rear axis connection；Wherein the output power of first motor is greater than the output power of the second motor.
As shown in figure 3, this method comprises:
Step 301: electric car starting when, control first motor to the preceding shaft power, and control motor from
Clutch connects power output channel of second motor to rear axle.
Step 302: when the current vehicle speed of electric car is higher than predetermined threshold, control electric motor clutch the second electricity of cutting
Machine continues to control first motor to the preceding shaft power to the power output channel of rear axle.
Preferably, the output power of the second motor is the half of the output power of first motor.
Electric motor clutch includes active part and secondary part；Second motor connects active part via the first spline；From
Part is moved via the input axis connection of the second spline and rear axle retarder.Wherein: control electric motor clutch connect the second motor to
The power output channel of rear axle includes: to receive bind command from entire car controller；Based on bind command by active part with it is driven
Part connects.After the active part of electric motor clutch is connect with secondary part, the second motor is to the power output channel of rear axle
It connects.At this point, the second motor successively via the first spline, the active part of electric motor clutch, electric motor clutch secondary part,
Second spline, rear axle retarder input shaft provide power to rear axle retarder, and rear axle retarder again arrives the power transfer
Rear axle.
In one embodiment, the second motor of control electric motor clutch cutting includes: to the power output channel of rear axle
ON- and OFF- command is received from entire car controller；Active part and secondary part are disconnected based on ON- and OFF- command.Active part with it is driven
After part disconnects, electric motor clutch has cut off power output channel of second motor to rear axle.
Front axle retarder includes primary speed-down gear, double-reduction gear and differential mechanism；The output shaft of first motor and one
The input axis connection of the driving wheel of grade reduction gearing；The driven wheel of primary speed-down gear is via jackshaft and double-reduction gear
Driving wheel connection；The driven wheel of double-reduction gear and the cage connection of differential mechanism；The driven wheel and second level of double-reduction gear
The driving wheel of reduction gearing engages；Two output axle shafts of differential mechanism are separately connected the preceding left half axle and preceding right axle shaft of front axle.
Fig. 4 is the tractive force curve synoptic diagram of electric car of the present invention.Fig. 5 is that the power-balance of electric car of the present invention is bent
Line schematic diagram.
In Fig. 4, curve 41 is Ideal Traction force curve；Curve 42 is gross tractive effort curve；Curve 43 is rear axle traction
Force curve；Curve 44 is front axle traction force curve；Curve 45 is resistance curve.In Fig. 5, curve 51 is preceding shaft power curve；
Curve 52 is rear shaft power curve；Curve 53 is total power curve；Curve 54 is resistance power curve.
As shown in Figure 4 and Figure 5, when speed is lower than v3, front and back motor respectively drives antero posterior axis and provides tractive force；Work as speed
When greater than v3, rear axle small machine clutch is disconnected, and rear axle no longer exports tractive force, and vehicle is only by the big motor driven of front axle.
It should be noted that due to the big motor of front axle be according to high vehicle speeds Demand Design, so when it is more than speed v3,
The gross tractive effort (being equal to front axle traction power at this time) of vehicle meets Ideal Traction force curve.Be less than but close to the speed of v3 be vehicle
It runs the common speed of highway (80-140km/h), as it can be seen that vehicle can export whole front and backs at this time in power-balance figure
Power of motor has enough stand-by powers before v3, has excellent high speed acceleration.When speed is greater than v3, the small electricity of rear axle
Machine disconnects, to reduce general power and stand-by power, improves economy.
Specifically, as shown in Figure 4 and Figure 5, for specific rear axle retarder transmission ratio i, rear axle draws force curve can be
It is moved left and right in Fig. 4 left figure, abscissa corresponding with the intersection point of resistance curve is exactly rear axle retarder transmission ratio i max. speed
Vi.Having one in design objective is highest stabilizing speed V_max, is definite value.As change rear axle retarder transmission ratio i, so that Vi
When=V_max, transmission ratio i is determined as the rear axle retarder transmission ratio after matching.
As a same reason, as shown in Figure 4 and Figure 5, for specific front axle retarder transmission ratio i, front axle traction force curve meeting
It is moved left and right in Fig. 4 left figure, it is gross tractive effort song that front axle traction force curve, which adds the rear axle traction force curve matched,
Line.The ordinate of the horizontal segment of gross tractive effort curve is exactly the corresponding vehicle maximum drawbar pull of front axle retarder transmission ratio i.It is maximum
Tractive force is definite value, is a design objective.When change front axle retarder transmission ratio i (do not need to change rear axle transmission ratio again because
Match before) so that the maximum drawbar pull of vehicle meets design requirement, after this transmission ratio i is determined as matching
Front axle retarder transmission ratio.
Can by embodiment of the present invention proposes electric car power output system and method be applied to various types
Electric car in.For example, can be applied to mixed power electric car (HEV), pure electric automobile (BEV), fuel cell electricity
Electrical automobile (FCEV) and other new energy (such as supercapacitor, flywheel high-efficiency energy storage vehicle) automobiles etc..
In conclusion in embodiments of the present invention, system includes: front axle；Rear axle；First motor, with front axle retarder
Connection, wherein the front axle retarder and the preceding axis connection；Second motor, connect with electric motor clutch, wherein the motor
Clutch is connect with rear axle retarder, the rear axle retarder and the rear axis connection；The wherein output work of the first motor
Rate is greater than the output power of second motor.As it can be seen that being met respectively by the way that different motor and clutch are arranged in antero posterior axis
Vehicle height runs at a low speed demand, and avoidance lacks the influence of heavy-duty motor and multi gear automatic gear-box to automobile research.
Herein, " schematic " expression " serving as examplea, instances, or illustrations " should not will be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to technical solution that is a kind of preferred or more having advantages.To make simplified form,
Part related to the present invention is only schematically shown in each figure, and does not represent its practical structures as product.Separately
Outside, so that simplified form is easy to understand, with the component of identical structure or function in some figures, it is only symbolically depicted
In one, or only marked one of those.Herein, "one" is not offered as limiting the quantity of relevant portion of the present invention
It is made as " only this ", and "one" situation for not indicating to exclude the quantity " more than one " of relevant portion of the present invention.At this
Wen Zhong, "upper", "lower", "front", "rear", "left", "right", "inner", "outside" etc. are only used for indicating the opposite position between relevant portion
Set relationship, and the absolute position of these non-limiting relevant portions.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope that is bright, and being not intended to limit the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention or
Change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of power output system of electric car characterized by comprising
Front axle；
Rear axle；
Front axle retarder, with the preceding axis connection；
Rear axle retarder, with the rear axis connection；
Electric motor clutch is connect with the rear axle retarder；
First motor is connect with the front axle retarder；
Second motor is connect with the electric motor clutch；
Wherein the output power of the first motor is greater than the output power of second motor.
2. the power output system of electric car according to claim 1, which is characterized in that further include:
Entire car controller is connect with the first motor and the electric motor clutch, when the current vehicle speed of the electric car is low
When being equal to the predetermined threshold, control first motor is to the preceding shaft power and the control electric motor clutch is connected
Second motor is to the power output channel of the rear axle；When the current vehicle speed of the electric car is higher than predetermined threshold
When, control first motor is to the preceding shaft power and the control electric motor clutch cuts off second motor to after described
The power output channel of axis.
3. the power output system of electric car according to claim 1, which is characterized in that the electric motor clutch includes
Active part and secondary part；
Second motor connects the active part via the first spline；The secondary part via the second spline and it is described after
The input axis connection of axis retarder.
4. the power output system of electric car according to claim 1, which is characterized in that the front axle retarder includes
Primary speed-down gear, double-reduction gear and differential mechanism；
The input axis connection of the driving wheel of the output shaft of the first motor and the primary speed-down gear；The primary speed-down tooth
The driven wheel of wheel is connected via the driving wheel of jackshaft and double-reduction gear；The driven wheel of double-reduction gear and differential mechanism
Cage connection；The driven wheel of double-reduction gear is engaged with the driving wheel of double-reduction gear；Two output axle shafts of differential mechanism
It is separately connected the preceding left half axle and preceding right axle shaft of the front axle.
5. the power output system of electric car according to claim 1, which is characterized in that the output of second motor
Power is the half of the output power of the first motor.
6. a kind of power output method of electric car, which is characterized in that the method is suitable for the power output of electric car
System, the power output system of the electric car include: front axle；Rear axle；First motor is connect with front axle retarder, wherein
The front axle retarder and the preceding axis connection；Second motor, connect with electric motor clutch, wherein the electric motor clutch is with after
The connection of axis retarder, the rear axle retarder and the rear axis connection；Wherein the output power of the first motor is greater than described
The output power of second motor；This method comprises:
In electric car starting, first motor is controlled to the preceding shaft power, and control the electric motor clutch
Connect power output channel of second motor to the rear axle；
When the current vehicle speed of the electric car is higher than predetermined threshold, the electric motor clutch cutting second electricity is controlled
Machine continues to control first motor to the preceding shaft power to the power output channel of the rear axle.
7. the power output method of electric car according to claim 6, which is characterized in that the output of second motor
Power is the half of the output power of the first motor.
8. the power output method of electric car according to claim 6, which is characterized in that the electric motor clutch includes
Active part and secondary part；Second motor connects the active part via the first spline；The secondary part via
The input axis connection of second spline and the rear axle retarder；
The control electric motor clutch connects second motor to the power output channel of the rear axle and includes:
Bind command is received from entire car controller；
The active part is connect with the secondary part based on the bind command.
9. the power output method of electric car according to claim 8, which is characterized in that the control motor from
Clutch cuts off second motor to the power output channel of the rear axle；
ON- and OFF- command is received from entire car controller；
The active part and the secondary part are disconnected based on the ON- and OFF- command.
10. a kind of electric car, which is characterized in that the power output system including electric car as described in claim 1.
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| CN201811601068.XA CN109591583A (en) | 2018-12-26 | 2018-12-26 | A kind of power output system of electric car, method and electric car |
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| CN201811601068.XA CN109591583A (en) | 2018-12-26 | 2018-12-26 | A kind of power output system of electric car, method and electric car |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111038240A (en) * | 2019-12-11 | 2020-04-21 | 华为技术有限公司 | Power assembly, driving system and automobile |
| CN112092613A (en) * | 2020-09-18 | 2020-12-18 | 中国第一汽车股份有限公司 | Four-wheel drive pure electric vehicle power system |
| CN113580956A (en) * | 2021-09-09 | 2021-11-02 | 中国第一汽车股份有限公司 | Pure electric vehicle power system, pure electric vehicle and control method |
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