CN112339742A - Hybrid electric vehicle, torque distribution method and torque distribution device thereof - Google Patents

Hybrid electric vehicle, torque distribution method and torque distribution device thereof Download PDF

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Publication number
CN112339742A
CN112339742A CN201910736496.1A CN201910736496A CN112339742A CN 112339742 A CN112339742 A CN 112339742A CN 201910736496 A CN201910736496 A CN 201910736496A CN 112339742 A CN112339742 A CN 112339742A
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torque
target
initial
generating
target torque
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唐亚民
陈新立
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BYD Co Ltd
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BYD Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0657—Engine torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/083—Torque

Abstract

The invention discloses a hybrid electric vehicle, a torque distribution method and a torque distribution device thereof, wherein the torque distribution method comprises the following steps: acquiring an initial torque and a target torque; generating a torque loading curve according to the initial torque and the target torque; and carrying out torque adjustment according to the torque loading curve until the hybrid electric vehicle reaches the target torque. The torque distribution method provided by the embodiment of the invention can realize the control of the torque loading process of the hybrid electric vehicle through the torque loading curve, thereby not only improving the smoothness of the whole vehicle, but also improving the driving feeling of the whole vehicle.

Description

Hybrid electric vehicle, torque distribution method and torque distribution device thereof
Technical Field
The present invention relates to the field of hybrid vehicle technologies, and in particular, to a torque distribution method for a hybrid vehicle, a torque distribution apparatus for a hybrid vehicle, an electronic device, and a non-transitory computer-readable storage medium.
Background
At present, a hybrid electric vehicle has a shaking problem during overtaking or normal oil adding and reducing, and part of reasons are that torque loading is not smooth, a bulge or a pit occurs, driving feeling is further influenced, and the vehicle can be damaged in a serious condition.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above.
Therefore, a first objective of the present invention is to provide a torque distribution method for a hybrid electric vehicle, which can realize control of a torque loading process of the hybrid electric vehicle through a torque loading curve, so as to improve the smoothness of the whole vehicle and improve the driving feel of the whole vehicle.
A second object of the present invention is to provide a torque distribution device for a hybrid vehicle.
A third object of the present invention is to provide a hybrid vehicle.
A fourth object of the invention is to propose an electronic device.
A fifth object of the invention is to propose a non-transitory computer-readable storage medium.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a torque distribution method for a hybrid vehicle, including the steps of: acquiring an initial torque and a target torque; generating a torque loading curve according to the initial torque and the target torque; and carrying out torque regulation according to the torque loading curve until the hybrid electric vehicle reaches the target torque.
According to the torque distribution method of the hybrid electric vehicle, the initial torque and the target torque are firstly obtained, then the torque loading curve is generated according to the initial torque and the target torque, and finally the torque is adjusted according to the torque loading curve until the hybrid electric vehicle reaches the target torque. Therefore, the torque distribution method can realize the control of the torque loading process of the hybrid electric vehicle through the torque loading curve, so that the smoothness of the whole vehicle is improved, and the driving feeling of the whole vehicle is improved.
In addition, the torque distribution method for the hybrid vehicle according to the above embodiment of the present invention may further have the following additional technical features:
in one embodiment of the present invention, the generating a torque loading curve according to the initial torque and the target torque comprises: and generating a torque loading curve according to the initial torque and the target torque through a Bezier algorithm.
In an embodiment of the present invention, the torque distribution method of the hybrid vehicle further includes: generating an Engine Control Unit (ECU) target torque and a motor target torque according to the target torque; and carrying out torque control on the hybrid electric vehicle according to the target torque of the ECU and the target torque of the motor.
In one embodiment of the present invention, the generating a torque loading curve by a bezier algorithm according to the initial torque and the target torque comprises: generating an intermediate torque according to the initial torque and the target torque; generating the torque loading curve according to the initial torque, the target torque and the intermediate torque.
In one embodiment of the invention, the intermediate torque is generated by the following equation:
Figure BDA0002162337770000021
wherein the content of the first and second substances,
Figure BDA0002162337770000022
is a preset proportionality coefficient, t0Time corresponding to the initial torque, t1Time to reach the preset torque, t2Time to reach the target torque, tFTime to reach the intermediate torque, T0Is the initial torque, T1For the preset torque, TFIs the intermediate torque.
In order to achieve the above object, a second aspect of the present invention provides a torque distribution device for a hybrid vehicle, including: the acquisition module is used for acquiring an initial torque and a target torque; the generating module is used for generating a torque loading curve according to the initial torque and the target torque; and the adjusting module is used for carrying out torque adjustment according to the torque loading curve until the hybrid electric vehicle reaches the target torque.
The torque distribution device of the hybrid electric vehicle comprises an acquisition module, a generation module, a regulation module and a torque loading module, wherein the acquisition module is used for acquiring an initial torque and a target torque, the generation module is used for generating a torque loading curve according to the initial torque and the target torque, and the regulation module is used for regulating the torque according to the torque loading curve until the hybrid electric vehicle reaches the target torque. Therefore, the torque distribution device can realize the control of the torque loading process of the hybrid electric vehicle through the torque loading curve, so that the smoothness of the whole vehicle is improved, and the driving feeling of the whole vehicle is improved.
In addition, the torque distribution device for a hybrid vehicle according to the above embodiment of the present invention may further have the following additional features:
in an embodiment of the present invention, the generating module is specifically configured to: and generating a torque loading curve according to the initial torque and the target torque through a Bezier algorithm.
In one embodiment of the invention, the generating module is further configured to generate an Engine Control Unit (ECU) target torque and a motor target torque according to the target torque; and the adjusting module is also used for carrying out torque control on the hybrid electric vehicle according to the target torque of the ECU and the target torque of the motor.
In an embodiment of the present invention, the generating module is specifically configured to: generating an intermediate torque according to the initial torque and the target torque; generating the torque loading curve according to the initial torque, the target torque and the intermediate torque.
In one embodiment of the present invention, the generating module generates the intermediate torque by the following formula:
Figure BDA0002162337770000031
wherein the content of the first and second substances,
Figure BDA0002162337770000032
is a preset proportionality coefficient, t0Time corresponding to the initial torque, t1Time to reach the preset torque, t2Time to reach the target torque, tFTime to reach the intermediate torque, T0Is the initial torque, T1For the preset torque, TFIs the intermediate torque.
In order to achieve the above object, a hybrid vehicle according to a third aspect of the present invention includes: the torque distribution device of a hybrid vehicle according to the embodiment of the second aspect of the invention.
According to the hybrid electric vehicle provided by the embodiment of the invention, the torque loading curve can be applied to realize the control of the torque loading process of the hybrid electric vehicle through the torque distribution device of the hybrid electric vehicle, so that the smoothness of the whole vehicle is improved, and the driving feeling of the whole vehicle is improved.
In order to achieve the above object, a fourth aspect of the present invention provides an electronic device, including a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the torque distribution method of the hybrid vehicle according to the first aspect of the present invention.
According to the electronic equipment provided by the embodiment of the invention, the processor executes the computer program stored on the memory, and the control of the torque loading process of the hybrid electric vehicle can be realized by using the torque loading curve, so that the smoothness of the whole vehicle is improved, and the driving feeling of the whole vehicle is improved.
To achieve the above object, a fifth embodiment of the present invention provides a non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the torque distribution method for a hybrid vehicle according to the first embodiment of the present invention.
The non-transitory computer readable storage medium of the embodiment of the invention can realize the control of the torque loading process of the hybrid electric vehicle by using the torque loading curve through executing the stored computer program, thereby not only improving the smoothness of the whole vehicle, but also improving the driving feeling of the whole vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flowchart of a torque distribution method of a hybrid vehicle according to one embodiment of the present invention;
FIG. 2 is a graphical schematic of a torque loading curve according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a coordinate transformation of a torque loading curve according to an embodiment of the present invention;
FIG. 4 is a block schematic diagram of a torque distribution device of a hybrid vehicle according to one embodiment of the present invention; and
fig. 5 is a block schematic diagram of a hybrid vehicle according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A torque distribution method of a hybrid vehicle, a torque distribution apparatus of a hybrid vehicle, an electronic device, and a non-transitory computer-readable storage medium according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a torque distribution method of a hybrid vehicle according to an embodiment of the present invention. In an embodiment of the invention, the hybrid vehicle may include a series-parallel hybrid vehicle and a parallel hybrid vehicle.
As shown in fig. 1, the torque distribution method of the hybrid vehicle according to the embodiment of the present invention may include the steps of:
and S1, acquiring the initial torque and the target torque. The target torque may include an engine control unit ECU target torque and a motor target torque, among others.
In an embodiment of the present invention, the hybrid Vehicle may obtain an initial torque and a target torque of the Vehicle through a Vehicle Control Unit (VCU). It should be noted that the initial torque of the vehicle described in this embodiment may be the current output torque of the vehicle.
Specifically, the vehicle control unit VCU may acquire a current output torque of the vehicle, i.e., an initial torque, through sensors provided on a motor and an engine of the vehicle. The VCU can also monitor the accelerator change of the vehicle and the current running condition of the vehicle through corresponding sensors, and when the accelerator change of the vehicle is monitored, the VCU can calculate the target torque according to the accelerator change of the vehicle and the current running condition of the vehicle, or calculate the target torque only according to the accelerator change of the vehicle.
It should be noted that after the initial torque and the target torque are obtained, the vehicle control unit VCU may first determine whether the torque of the vehicle needs to be changed according to the obtained initial torque, the obtained target torque, and/or the accelerator change of the vehicle and the current driving condition of the vehicle, and when it is determined that the torque needs to be changed, perform the subsequent operation (for example, step S2). If not, the vehicle control unit VCU may continue to maintain the current torque output of the vehicle.
And S2, generating a torque loading curve according to the initial torque and the target torque.
In the embodiment of the invention, the torque loading curve can be generated through a preset algorithm according to the initial torque and the target torque, wherein the preset algorithm can be calibrated according to actual conditions.
In one embodiment of the invention, generating the torque loading curve from the initial torque and the target torque may include generating the torque loading curve from the initial torque and the target torque via a Bezier algorithm.
And S3, carrying out torque adjustment according to the torque loading curve until the hybrid electric vehicle reaches the target torque.
It should be noted that the curve generated by the bezier algorithm may be referred to as a bezier curve, which is an arbitrary-shaped curve, and the arbitrary curve may be generated by changing the third point value.
In one embodiment of the present invention, generating a torque loading curve from the initial torque and the target torque by a Bezier algorithm may include generating an intermediate torque from the initial torque and the target torque, and generating a torque loading curve from the initial torque, the target torque, and the intermediate torque.
Wherein the intermediate torque may be generated by the following equation (1):
Figure BDA0002162337770000051
wherein the content of the first and second substances,
Figure BDA0002162337770000052
is a preset proportionality coefficient, t0Time corresponding to initial torque, t1Time to reach the preset torque, t2Time to reach target torque, tFTime to reach intermediate torque, T0Is an initial torque, T1For a predetermined torque, TFIs an intermediate torque.
For example, referring to FIG. 2, first, a time-torque coordinate system (XOY coordinate system) is established, assuming that the initial torque value of the vehicle is T0Corresponding to time t on the time axis0I.e., point A in FIG. 2, i.e., A (t)0，T0) (ii) a Assume a target torque value of the vehicle as T2The target value (i.e., the target torque value) is reached within a predetermined time, and the corresponding time on the time axis is t2I.e., point C in FIG. 2, i.e., C (t)2，T2). Secondly, setting the coordinate of the point B of the calibration point influencing the curvature as B (t)1，T1) And the calibration point B can be calibrated according to actual conditions, for example, the calibration point B can be calibrated according to the magnitude of the influence curvature.
Then, a torque loading curve equation is calculated by using a Bessel algorithm, so that a real-time-torque coordinate point F (t) is obtainedF,tF) (i.e., intermediate torque t)FAnd time to intermediate torque tF) The functional equation of (a), i.e., the above equation (1). Wherein, in the above formula (1)
Figure BDA0002162337770000053
In FIG. 2
Figure BDA0002162337770000054
I.e., λ is a scaling factor that varies with time, as shown by the above equation.
Wherein, the point B is used as a calibration point, and different values are set to obtain a time-torque target curve with different curvatures, i.e. a locus of the point F (the torque loading curve). Through the calculation, a time-torque coordinate point F (t) after real-time smoothing can be obtainedF,TF) Values in the coordinate system of fig. 2 (i.e., XOY).
Thus, according to F (t)F,TF) The torque of the point locus is adjusted until the hybrid electric vehicle reaches the target torque (namely, the point F is coincident with the point C), so that the smoothness of the whole vehicle is greatly improved, and the driving feeling of the whole vehicle is improved.
Further, assume that the vehicle is currently performing an acceleration operation, since F (t)F,TF) Point T in XOY coordinate systemFIs not monotonically increasing, i.e. T may occurF>T2Case (point F is higher than point C on the Y axis), this time. The XOY coordinate system can be transformed to ensure that F points only monotonically increase. Therefore, it is necessary to make the line segment BC horizontal to the X axis in the converted coordinate system.
Referring to fig. 2 and 3, assuming that the BC line segment is at an angle θ to the X axis in the XOY coordinate, the value of θ can be solved by the following equation (2):
tan(θ)＝(Cy-By)/(Cx-Bx) (2)
wherein, Bx and Cx represent X coordinates of B, C points, and By and Cy represent Y-axis coordinates.
After obtaining the angle value (i.e., θ value) between the C line segment and the X axis in the XOY coordinate, the coordinate system is converted into X 'OY' by the following equation (3):
Figure BDA0002162337770000061
then, A, B, C, F four points in fig. 3 are converted according to the above equation (3) to obtain coordinate points a ', B', C ', F' in the X 'OY' coordinate system. Meanwhile, for the convenience of calculation, it is necessary to set the time origin at the origin, i.e., to establish a 'as a coordinate system X "O' Y" of the X-axis origin. The coordinates of the four points in X 'O' Y 'are A', B ', C and F', the Y axes of A 'and A' coordinates are the same, and the X axes are different by A 'X, namely the X value of the A' point. The calculation methods of B ', C', and F 'are the same as those of A'. Thus, three points a ", B", C ", and F" corresponding to the conversion of A, B, C, F four points in the XOY coordinate system to the X "O' Y" coordinate system are obtained.
Then, since the converted F "point is not on the same coordinate on the Y axis as before conversion, a shift of the maximum value is produced, causing an error in the target torque output value, and therefore two coordinate systems need to be scaled equally on Y, namely: t is F "Y (C" Y-a "Y)/(Cy-Ay), where Ay, Cy, Fy represent the Y-axis value of point A, C, F in the XOY coordinate system, a" Y, C "Y, F" Y represent the Y-axis value of a ", C", F "point in the X" O' Y "coordinate system, and T is the torque value that needs to be output after smoothing.
Therefore, in the algorithm, the curve T (i.e. the torque loading curve) with smooth increment can be obtained only by specifying the initial torque of the vehicle at the point A, the target torque of the vehicle at the point C and the B point value influencing the curvature (which can be calibrated).
And finally, the hybrid electric vehicle adjusts the torque according to the calculated smooth increasing curve T until the hybrid electric vehicle reaches the target torque. In the embodiment, the control of the torque loading process is realized by applying the Seebel principle and coordinate conversion calculation, and the actual torque of the whole vehicle is controlled by perfecting the target torque curve, so that the smoothness of the whole vehicle is improved, and the driving feeling is better.
In summary, according to the torque distribution method of the hybrid electric vehicle in the embodiment of the invention, the initial torque and the target torque are firstly obtained, then the torque loading curve is generated through the bezier algorithm according to the initial torque and the target torque, and finally the torque is adjusted according to the torque loading curve until the hybrid electric vehicle reaches the target torque. Therefore, the torque distribution method can realize the control of the torque loading process of the hybrid electric vehicle through the torque loading curve, so that the smoothness of the whole vehicle is improved, and the driving feeling of the whole vehicle is improved.
In addition, in an embodiment of the present invention, the torque distribution method of the hybrid vehicle may further include generating an engine control unit ECU target torque and a motor target torque according to the target torque, and performing torque control on the hybrid vehicle according to the engine control unit ECU target torque and the motor target torque.
Specifically, after the vehicle control unit VCU acquires the target torque of the vehicle, the vehicle control unit VCU may further divide the target torque into an engine control unit ECU target torque and a motor target torque according to a preset torque distribution algorithm, and then perform torque control on the hybrid vehicle through a bessel algorithm according to the engine control unit ECU target torque and the motor target torque.
Fig. 4 is a block diagram schematically illustrating a torque split device of a hybrid vehicle according to an embodiment of the present invention.
As shown in fig. 4, a torque distribution device 1000 of a hybrid vehicle according to an embodiment of the present invention includes: an acquisition module 100, a generation module 200 and an adjustment module 300.
The obtaining module 100 is configured to obtain an initial torque and a target torque.
The generation module 200 is configured to generate a torque loading curve based on an initial torque and a target torque.
The adjustment module 300 is configured to perform torque adjustment according to a torque loading curve until the hybrid vehicle reaches a target torque.
In one embodiment of the invention, the generation module 300 is specifically configured to generate a torque loading curve from the initial torque and the target torque via a Bezier algorithm.
In one embodiment of the invention, the generating module 200 is further configured to generate an engine control unit ECU target torque and a motor target torque according to the target torque, and the adjusting module 300 is further configured to perform torque control on the hybrid vehicle according to the engine control unit ECU target torque and the motor target torque.
In one embodiment of the present invention, the generation module 200 is specifically configured to generate an intermediate torque based on the initial torque and the target torque, and to generate a torque loading curve based on the initial torque, the target torque, and the intermediate torque.
In one embodiment of the present invention, the generation module 200 generates the intermediate torque by the following equation:
Figure BDA0002162337770000071
wherein the content of the first and second substances,
Figure BDA0002162337770000072
is a preset proportionality coefficient, t0Time corresponding to initial torque, t1Time to reach the preset torque, t2Time to reach target torque, tFTime to reach intermediate torque, T0Is an initial torque, T1For a predetermined torque, TFIs an intermediate torque.
It should be noted that details that are not disclosed in the torque distribution device of the hybrid electric vehicle according to the embodiment of the present invention refer to details that are disclosed in the torque distribution method of the hybrid electric vehicle according to the embodiment of the present invention, and detailed description thereof is omitted here.
To sum up, the torque distribution device of the hybrid electric vehicle according to the embodiment of the invention first obtains the initial torque and the target torque through the obtaining module, then generates the torque loading curve through the generating module according to the initial torque and the target torque through the bezier algorithm, and finally performs torque adjustment through the adjusting module according to the torque loading curve until the hybrid electric vehicle reaches the target torque. Therefore, the torque distribution device can realize the control of the torque loading process of the hybrid electric vehicle through the torque loading curve, so that the smoothness of the whole vehicle is improved, and the driving feeling of the whole vehicle is improved.
In order to implement the above embodiment, the present invention further provides a hybrid vehicle, and as shown in fig. 5, a hybrid vehicle 1000 includes the above-mentioned torque distribution device 1000 of the hybrid vehicle.
According to the hybrid electric vehicle provided by the embodiment of the invention, the torque loading curve can be applied to realize the control of the torque loading process of the hybrid electric vehicle through the torque distribution device of the hybrid electric vehicle, so that the smoothness of the whole vehicle is improved, and the driving feeling of the whole vehicle is improved.
In order to implement the foregoing embodiments, the present invention further provides an electronic device, which includes a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the torque distribution method of the hybrid vehicle according to the foregoing embodiments.
According to the electronic equipment provided by the embodiment of the invention, the processor executes the computer program stored on the memory, and the control of the torque loading process of the hybrid electric vehicle can be realized by using the torque loading curve, so that the smoothness of the whole vehicle is improved, and the driving feeling of the whole vehicle is improved.
In order to achieve the above embodiments, the present invention also proposes a non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that the program is executed by a processor to implement the torque distribution method of the hybrid vehicle of the foregoing embodiments.
The non-transitory computer readable storage medium of the embodiment of the invention can realize the control of the torque loading process of the hybrid electric vehicle by using the torque loading curve through executing the stored computer program, thereby not only improving the smoothness of the whole vehicle, but also improving the driving feeling of the whole vehicle.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (13)

1. A torque distribution method for a hybrid vehicle, characterized by comprising the steps of:
acquiring an initial torque and a target torque;
generating a torque loading curve according to the initial torque and the target torque; and
and carrying out torque regulation according to the torque loading curve until the hybrid electric vehicle reaches the target torque.
2. The torque distribution method of a hybrid vehicle according to claim 1, wherein the generating a torque loading curve based on the initial torque and the target torque comprises:
and generating a torque loading curve according to the initial torque and the target torque through a Bezier algorithm.
3. The torque distribution method of a hybrid vehicle according to claim 1, further comprising:
generating an Engine Control Unit (ECU) target torque and a motor target torque according to the target torque; and
and carrying out torque control on the hybrid electric vehicle according to the target torque of the ECU and the target torque of the motor.
4. The torque distribution method of a hybrid vehicle according to claim 2, wherein the generating a torque loading curve by a bezier algorithm based on the initial torque and the target torque comprises:
generating an intermediate torque according to the initial torque and the target torque;
generating the torque loading curve according to the initial torque, the target torque and the intermediate torque.
5. The torque distribution method of a hybrid vehicle according to claim 4, wherein the intermediate torque is generated by the following formula:
Figure FDA0002162337760000011
wherein the content of the first and second substances,
Figure FDA0002162337760000012
is a preset proportionality coefficient, t0Time corresponding to the initial torque, t1Time to reach the preset torque, t2Time to reach the target torque, tFTime to reach the intermediate torque, T0Is the initial torque, T1For the preset torque, TFIs the intermediate torque.
6. A torque distribution device for a hybrid vehicle, characterized by comprising:
the acquisition module is used for acquiring an initial torque and a target torque;
the generating module is used for generating a torque loading curve according to the initial torque and the target torque; and
and the adjusting module is used for carrying out torque adjustment according to the torque loading curve until the hybrid electric vehicle reaches the target torque.
7. The torque distribution device of a hybrid vehicle according to claim 6, wherein the generating module is specifically configured to:
and generating a torque loading curve according to the initial torque and the target torque through a Bezier algorithm.
8. The torque split device of a hybrid vehicle according to claim 6, wherein the generating module is further configured to generate an Engine Control Unit (ECU) target torque and a motor target torque based on the target torque;
and the adjusting module is also used for carrying out torque control on the hybrid electric vehicle according to the target torque of the ECU and the target torque of the motor.
9. The torque distribution device of a hybrid vehicle according to claim 7, wherein the generating module is specifically configured to:
generating an intermediate torque according to the initial torque and the target torque;
generating the torque loading curve according to the initial torque, the target torque and the intermediate torque.
10. The torque distribution device of a hybrid vehicle according to claim 9, wherein the generation module generates the intermediate torque by the following formula:
Figure FDA0002162337760000021
wherein the content of the first and second substances,
Figure FDA0002162337760000022
is a preset proportionality coefficient, t0Time corresponding to the initial torque, t1Time to reach the preset torque, t2To reach the purposeTime of target torque, tFTime to reach the intermediate torque, T0Is the initial torque, T1For the preset torque, TFIs the intermediate torque.
11. A hybrid vehicle characterized by comprising the torque distribution device of the hybrid vehicle according to any one of claims 6 to 10.
12. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the torque distribution method of the hybrid vehicle according to any one of claims 1 to 5.
13. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the program is executed by a processor to implement the torque distribution method of a hybrid vehicle according to any one of claims 1 to 5.
CN201910736496.1A 2019-08-09 2019-08-09 Hybrid electric vehicle, torque distribution method and torque distribution device thereof Pending CN112339742A (en)

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