CN104827881A - Dual-mode hybrid vehicle dual-motor parameter matching method and device - Google Patents
Dual-mode hybrid vehicle dual-motor parameter matching method and device Download PDFInfo
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Abstract
The invention provides a dual-mode hybrid vehicle dual-motor parameter matching method and device. The dual-mode hybrid vehicle dual-motor parameter matching method comprises the steps that first parameters are acquired, the first parameters are parameters of a first motor, and the whole vehicle is enabled to meet the preset requirement of fuel economy by the first parameters; and second parameters are acquired, the second parameters are parameters of a second motor, and the whole vehicle is enabled to meet the preset requirement of power performance by the second parameters. According to the method, power performance of the whole vehicle can be ensured and fuel economy of the whole vehicle can also be ensured in the parameter matching process.
Description
Technical field
The present invention relates to field of automobile, particularly relate to a kind of matching process and device of bimodulus hybrid power vehicle double electric machine parameter.
Background technology
For the determination of the parameter of electric machine in bimodulus hybrid vehicle in prior art, it is all only formula by rule of thumb.But, based on the defining method of empirical equation, only can guarantee car load tractive performance, consider less to car load fuel economy.
Summary of the invention
The present invention is intended to solve one of technical matters in correlation technique at least to a certain extent.
For this reason, one object of the present invention is the matching process proposing a kind of bimodulus hybrid power vehicle double electric machine parameter, and the method in parameter matching process, can both guarantee car load tractive performance, can guarantee car load fuel economy again.
Another object of the present invention is the coalignment proposing a kind of bimodulus hybrid power vehicle double electric machine parameter.
For achieving the above object, the matching process of the bimodulus hybrid power vehicle double electric machine parameter that first aspect present invention embodiment proposes, comprise: obtain the first parameter, described first parameter is the parameter of the first motor, and described first parameter makes car load meet default fuel economy requirement; Obtain the second parameter, described second parameter is the parameter of the second motor, and described second parameter makes car load meet default tractive performance requirement.
The matching process of the bimodulus hybrid power vehicle double electric machine parameter that first aspect present invention embodiment proposes; by obtaining the first parameter and the second parameter; and the first parameter considers fuel economy requirement; second parameter considers tractive performance requirement; can in parameter matching process; both guaranteed car load tractive performance, and car load fuel economy can have been guaranteed again.
For achieving the above object, the coalignment of the bimodulus hybrid power vehicle double electric machine parameter that second aspect present invention embodiment proposes, comprise: the first acquisition module, for obtaining the first parameter, described first parameter is the parameter of the first motor, and described first parameter makes car load meet default fuel economy requirement; Second acquisition module, for obtaining the second parameter, described second parameter is the parameter of the second motor, and described second parameter makes car load meet default tractive performance requirement.
The coalignment of the bimodulus hybrid power vehicle double electric machine parameter that second aspect present invention embodiment proposes; by obtaining the first parameter and the second parameter; and the first parameter considers fuel economy requirement; second parameter considers tractive performance requirement; can in parameter matching process; both guaranteed car load tractive performance, and car load fuel economy can have been guaranteed again.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the schematic flow sheet of the matching process of the bimodulus hybrid power vehicle double electric machine parameter that one embodiment of the invention proposes;
Fig. 2 a is the schematic diagram of front axle when a kind of double-motor is arranged in the embodiment of the present invention;
Fig. 2 b is the schematic diagram of rear axle when a kind of double-motor is arranged in the embodiment of the present invention;
Fig. 3 a is the schematic diagram of front axle when another kind of double-motor is arranged in the embodiment of the present invention;
Fig. 3 b is the schematic diagram of rear axle when another kind of double-motor is arranged in the embodiment of the present invention;
Fig. 4 is the schematic flow sheet of the matching process of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention proposes;
Fig. 5 is the schematic diagram of the universal characteristic curve of driving engine in the embodiment of the present invention;
Fig. 6 is the schematic diagram that in the embodiment of the present invention, discharge curve falls in torque increase curve and moment of torsion;
Fig. 7 is the driving torque curve of the first motor in the embodiment of the present invention and the schematic diagram of power generation torque curve;
Fig. 8 is the structural representation of the coalignment of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention proposes;
Fig. 9 is the structural representation of the coalignment of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention proposes.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar module or has module that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
Fig. 1 is the schematic flow sheet of the matching process of the bimodulus hybrid power vehicle double electric machine parameter that one embodiment of the invention proposes, and the method comprises:
S11: obtain the first parameter, described first parameter is the parameter of the first motor, and described first parameter makes car load meet default fuel economy requirement.
S12: obtain the second parameter, described second parameter is the parameter of the second motor, and described second parameter makes car load meet default tractive performance requirement.
Wherein, as shown in Figure 2 a, the first motor can be arranged on the front axle of automobile, and accordingly, as shown in Figure 2 b, the second motor is arranged on the rear axle of automobile.Or as shown in Figure 3 a, the first motor and the second motor are all arranged on the front axle of automobile, accordingly, as shown in Figure 3 b, the rear axle of automobile do not arrange motor.
Concrete, the first parameter can meet following condition, meets default fuel economy require to make car load:
Under driving power-assisted and driving generating two kinds of patterns, make driving engine along the work of optimal fuel economy curve; And, under power generation cascade pattern, make engine operation in specific consumption of fuel smallest point.
Concrete, the second parameter can meet following condition, meets default tractive performance require to make car load:
The peak parameters of the second parameter meets hill start index, and maximum speed and acceleration capability requirement under pure electronic operating mode.
The first above-mentioned parameter and the second parameter can be selected according to mentioned above principle under stable condition at driving engine and single-stage base ratio.
The present embodiment is by acquisition first parameter and the second parameter, and the first parameter considers fuel economy requirement, and the second parameter considers tractive performance requirement, in parameter matching process, can both guarantee car load tractive performance, and can guarantee car load fuel economy again.
Fig. 4 is the schematic flow sheet of the matching process of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention proposes, and the method comprises:
S401: determine the demand power of described automobile under default operating mode;
Such as, default operating mode is national standard city operating mode, the plug-in hybrid SUV being 2000kg for a certain curb mass, and the demand power of this car under the operating mode of national standard city is 65kW.
S402: on universal characteristic curve of engine, determines full-throttle characteristics, optimal fuel economy curve, minimal torque curve, and the equipower curve that described demand power is corresponding;
Universal characteristic curve of engine as shown in Figure 5, comprises full-throttle characteristics 51, optimal fuel economy curve 52, minimal torque curve 53,65kW equipower curve 54.
S403: the intrinsic curve obtaining described full-throttle characteristics and described equipower curve composition, and obtains the moment of torsion difference between described intrinsic curve and described optimal fuel economy curve, and according to the corresponding relation determination torque increase curve of described difference and rotating speed;
See Fig. 5, intrinsic curve comprises ABC curve.
Torque increase curve is as shown in the curve 61 of Fig. 6.
S404: obtain the moment of torsion difference between described minimal torque curve and described optimal fuel economy curve, and discharge curve falls according to the corresponding relation determination moment of torsion of described difference and rotating speed;
Moment of torsion falls discharge curve as shown in the curve 62 of Fig. 6.
S405: corresponding moment of torsion and rotating speed time minimum according to driving engine specific consumption of fuel, calculates magnitude of power during power generation cascade;
In the present embodiment, the magnitude of power during power generation cascade calculated is the magnitude of power that D point is corresponding is 38.7kW.
S406: according to described torque increase curve, discharge curve falls in described moment of torsion, and magnitude of power during described power generation cascade, determines the first parameter.
Wherein, first parameter comprises the driving torque under each rotating speed, power generation torque under each rotating speed, power of motor and electrical efficiency, and the driving torque under each rotating speed is greater than the torque increase of corresponding rotating speed in described torque increase curve, power generation torque under each rotating speed is less than the moment of torsion amount of falling that corresponding rotating speed in discharge curve falls in described moment of torsion, and described power of motor is greater than magnitude of power during described power generation cascade, and the distance at the vertex of described electrical efficiency and the minimum place of driving engine specific consumption of fuel is minimum.
Concrete, in order to pass through the first motor power-assisted effect, make engine operation in optimal fuel economy curve, the driving torque under each rotating speed of the first motor should be greater than torque increase; In order to pass through driving generating effect, make engine operation in optimal fuel economy curve, the power generation torque under each rotating speed of the first motor should be less than the moment of torsion amount of falling; During in order to make power generation cascade, engine operation is in best economy operation point, magnitude of power when the first power of motor should be greater than power generation cascade.
Under meeting above three conditions, see Fig. 7, show driving torque curve 71 and the power generation torque curve 72 of the first Rated motor.
In addition, the motor meeting above three conditions is more, select electrical efficiency and the good motor of engine efficiency synchronism as the first motor, motor best efficiency point and the minimum place of driving engine specific consumption of fuel apart from nearer, show that synchronism is better.
Achieve the first parameter by said process to have determined.
S407: according to hill start index request, determines the peak torque of the second motor;
Suppose in the present embodiment, peak torque should be greater than 220Nm.
S408: according to maximum speed requirement under pure electronic operating mode, determine the maximum speed of revolution of the second motor;
Suppose in the present embodiment, maximum speed of revolution should be greater than 11000rpm.
S409: select the motor meeting described peak torque and described maximum speed of revolution as the second motor in existing motor;
The present embodiment, suppose, according to supplier resource, to determine peak power 105kW, peak torque 230Nm, and the motor of maximum speed of revolution 12000rpm is as the second motor.
S410: judge to adopt the motor selected whether to meet maximum speed, pick-up time and max. climb slope requirement, if so, perform S411, otherwise, perform S412.
Such as, the second above-mentioned parameter is adopted to adopt simulation analysis to determine whether to meet performance requriements.
In the present embodiment, by adopting the second above-mentioned parameter, utilize simulating analysis, under hybrid mode, the maximum speed of vehicle is greater than 180km/h, 0 ~ 100km/h pick-up time is less than 9 seconds and max. climb slope is greater than 30%, under electric-only mode, the maximum speed of vehicle is greater than 120km/h, 0 ~ 100km/h pick-up time is less than 12 seconds and max. climb slope is greater than 30%, as can be seen from result of calculation, vehicle performance meets the demands.
S411: the second parameter matching completes.
S412: the peak power increasing by the second motor according to preset ratio, re-executes step S410 and subsequent step thereof afterwards.
Such as, preset ratio is 5%, then the peak power of the second motor is increased by 5%.
The present embodiment, by parameter matching process, both paid close attention to power index, had considered again fuel economy when operating mode travels; By choose reasonable two parameters of electric machine, power performance is met the requirements, and optimize the fuel oil consumption of vehicle under the operating mode of city.
Fig. 8 is the structural representation of the coalignment of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention proposes, and this device 80 comprises the first acquisition module 81 and the second acquisition module 82.
First acquisition module 81, for obtaining the first parameter, described first parameter is the parameter of the first motor, and described first parameter makes car load meet default fuel economy requirement;
Described first parameter meets following condition:
Under driving power-assisted and driving generating two kinds of patterns, make driving engine along the work of optimal fuel economy curve; And, under power generation cascade pattern, make engine operation in specific consumption of fuel smallest point.
Second acquisition module 82, for obtaining the second parameter, described second parameter is the parameter of the second motor, and described second parameter makes car load meet default tractive performance requirement.
Described second parameter meets following condition:
The peak parameters of the second parameter meets hill start index, and maximum speed and acceleration capability requirement under pure electronic operating mode.
Wherein, as shown in Figure 2 a, the first motor can be arranged on the front axle of automobile, and accordingly, as shown in Figure 2 b, the second motor is arranged on the rear axle of automobile.Or as shown in Figure 3 a, the first motor and the second motor are all arranged on the front axle of automobile, accordingly, as shown in Figure 3 b, the rear axle of automobile do not arrange motor.
The first above-mentioned parameter and the second parameter can be selected according to mentioned above principle under stable condition at driving engine and single-stage base ratio.
In another embodiment, see Fig. 9, described first acquisition module 81 comprises:
First module 811, for determining the demand power of described automobile under default operating mode;
Such as, default operating mode is national standard city operating mode, the plug-in hybrid SUV being 2000kg for a certain curb mass, and the demand power of this car under the operating mode of national standard city is 65kW.
Second unit 812, at universal characteristic curve of engine, determines full-throttle characteristics, optimal fuel economy curve, minimal torque curve, and the equipower curve that described demand power is corresponding;
Universal characteristic curve of engine as shown in Figure 5, comprises full-throttle characteristics 51, optimal fuel economy curve 52, minimal torque curve 53,65kW equipower curve 54.
3rd unit 813, for obtaining the intrinsic curve of described full-throttle characteristics and described equipower curve composition, and the moment of torsion difference obtained between described intrinsic curve and described optimal fuel economy curve, and according to the corresponding relation determination torque increase curve of described difference and rotating speed;
See Fig. 5, intrinsic curve comprises ABC curve.
Torque increase curve is as shown in the curve 61 of Fig. 6.
4th unit 814, for obtaining the moment of torsion difference between described minimal torque curve and described optimal fuel economy curve, and falls discharge curve according to the corresponding relation determination moment of torsion of described difference and rotating speed;
Moment of torsion falls discharge curve as shown in the curve 62 of Fig. 6.
5th unit 815, for corresponding moment of torsion and rotating speed time minimum according to driving engine specific consumption of fuel, calculates magnitude of power during power generation cascade;
In the present embodiment, the magnitude of power during power generation cascade calculated is the magnitude of power that D point is corresponding is 38.7kW.
6th unit 816, for according to described torque increase curve, discharge curve falls in described moment of torsion, and magnitude of power during described power generation cascade, determine the first parameter, wherein, first parameter comprises the driving torque under each rotating speed, power generation torque under each rotating speed, power of motor and electrical efficiency, and the driving torque under each rotating speed is greater than the torque increase of corresponding rotating speed in described torque increase curve, power generation torque under each rotating speed is less than the moment of torsion amount of falling that corresponding rotating speed in discharge curve falls in described moment of torsion, described power of motor is greater than magnitude of power during described power generation cascade, and the distance at the vertex of described electrical efficiency and the minimum place of driving engine specific consumption of fuel is minimum.
Concrete, in order to pass through the first motor power-assisted effect, make engine operation in optimal fuel economy curve, the driving torque under each rotating speed of the first motor should be greater than torque increase; In order to pass through driving generating effect, make engine operation in optimal fuel economy curve, the power generation torque under each rotating speed of the first motor should be less than the moment of torsion amount of falling; During in order to make power generation cascade, engine operation is in best economy operation point, magnitude of power when the first power of motor should be greater than power generation cascade.
Under meeting above three conditions, see Fig. 7, show driving torque curve 71 and the power generation torque curve 72 of the first Rated motor.
In addition, the motor meeting above three conditions is more, select electrical efficiency and the good motor of engine efficiency synchronism as the first motor, motor best efficiency point and the minimum place of driving engine specific consumption of fuel apart from nearer, show that synchronism is better.
Achieve the first parameter by said process to have determined.
In another embodiment, see Fig. 9, described second acquisition module 82 comprises:
7th unit 821, for according to hill start index request, determines the peak torque of the second motor;
Suppose in the present embodiment, peak torque should be greater than 220Nm.
8th unit 822, for according to maximum speed requirement under pure electronic operating mode, determines the maximum speed of revolution of the second motor;
Suppose in the present embodiment, maximum speed of revolution should be greater than 11000rpm.
9th unit 823, for selecting the motor meeting described peak torque and described maximum speed of revolution as the second motor in existing motor;
The present embodiment, suppose, according to supplier resource, to determine peak power 105kW, peak torque 230Nm, and the motor of maximum speed of revolution 12000rpm is as the second motor.
Tenth unit 824, judges to adopt the motor selected whether to meet maximum speed, pick-up time and max. climb slope requirement;
Such as, the second above-mentioned parameter is adopted to adopt simulation analysis to determine whether to meet performance requriements.
In the present embodiment, by adopting the second above-mentioned parameter, utilize simulating analysis, under hybrid mode, the maximum speed of vehicle is greater than 180km/h, 0 ~ 100km/h pick-up time is less than 9 seconds and max. climb slope is greater than 30%, under electric-only mode, the maximum speed of vehicle is greater than 120km/h, 0 ~ 100km/h pick-up time is less than 12 seconds and max. climb slope is greater than 30%, as can be seen from result of calculation, vehicle performance meets the demands.
11 unit 825, for when not meeting, increasing the peak power of the second motor according to preset ratio and rejudging until meet the demands, when meeting the demands, the parameter of the motor of selection being defined as the second parameter.
Such as, preset ratio is 5%, then the peak power of the second motor is increased by 5%.
In the present embodiment, by adopting the second above-mentioned parameter, utilize simulating analysis, under hybrid mode, the maximum speed of vehicle is greater than 180km/h, 0 ~ 100km/h pick-up time is less than 9 seconds and max. climb slope is greater than 30%, under electric-only mode, the maximum speed of vehicle is greater than 120km/h, 0 ~ 100km/h pick-up time is less than 12 seconds and max. climb slope is greater than 30%, as can be seen from result of calculation, vehicle performance meets the demands.
The present embodiment is by acquisition first parameter and the second parameter, and the first parameter considers fuel economy requirement, and the second parameter considers tractive performance requirement, in parameter matching process, can both guarantee car load tractive performance, and can guarantee car load fuel economy again.
It should be noted that, in describing the invention, term " first ", " second " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
Describe and can be understood in diagram of circuit or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinatory logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only memory (ROM), disk or CD etc.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a matching process for bimodulus hybrid power vehicle double electric machine parameter, is characterized in that, comprising:
Obtain the first parameter, described first parameter is the parameter of the first motor, and described first parameter makes car load meet default fuel economy requirement;
Obtain the second parameter, described second parameter is the parameter of the second motor, and described second parameter makes car load meet default tractive performance requirement.
2. method according to claim 1, is characterized in that, described first parameter meets following condition:
Under driving power-assisted and driving generating two kinds of patterns, make driving engine along the work of optimal fuel economy curve; And, under power generation cascade pattern, make engine operation in specific consumption of fuel smallest point.
3. method according to claim 1, is characterized in that, described second parameter meets following condition:
The peak parameters of the second parameter meets hill start index, and maximum speed and acceleration capability requirement under pure electronic operating mode.
4. the method according to any one of claim 1-3, is characterized in that, described acquisition first parameter, comprising:
Determine the demand power of described automobile under default operating mode;
On universal characteristic curve of engine, determine full-throttle characteristics, optimal fuel economy curve, minimal torque curve, and the equipower curve that described demand power is corresponding;
Obtain the intrinsic curve of described full-throttle characteristics and described equipower curve composition, and obtain the moment of torsion difference between described intrinsic curve and described optimal fuel economy curve, and according to the corresponding relation determination torque increase curve of described difference and rotating speed;
Obtain the moment of torsion difference between described minimal torque curve and described optimal fuel economy curve, and fall discharge curve according to the corresponding relation determination moment of torsion of described difference and rotating speed;
Corresponding moment of torsion and rotating speed time minimum according to driving engine specific consumption of fuel, calculate magnitude of power during power generation cascade;
According to described torque increase curve, discharge curve falls in described moment of torsion, and magnitude of power during described power generation cascade, determine the first parameter, wherein, first parameter comprises the driving torque under each rotating speed, power generation torque under each rotating speed, power of motor and electrical efficiency, and the driving torque under each rotating speed is greater than the torque increase of corresponding rotating speed in described torque increase curve, power generation torque under each rotating speed is less than the moment of torsion amount of falling that corresponding rotating speed in discharge curve falls in described moment of torsion, described power of motor is greater than magnitude of power during described power generation cascade, and the distance at the vertex of described electrical efficiency and the minimum place of driving engine specific consumption of fuel is minimum.
5. the method according to any one of claim 1-3, is characterized in that, described acquisition second parameter, comprising:
According to hill start index request, determine the peak torque of the second motor;
According to maximum speed requirement under pure electronic operating mode, determine the maximum speed of revolution of the second motor;
In existing motor, select the motor meeting described peak torque and described maximum speed of revolution as the second motor;
Judge to adopt the motor selected whether to meet maximum speed, pick-up time and max. climb slope requirement;
When not meeting, increasing the peak power of the second motor according to preset ratio and rejudging until meet the demands, when meeting the demands, the parameter of the motor of selection being defined as the second parameter.
6. a coalignment for bimodulus hybrid power vehicle double electric machine parameter, is characterized in that, comprising:
First acquisition module, for obtaining the first parameter, described first parameter is the parameter of the first motor, and described first parameter makes car load meet default fuel economy requirement;
Second acquisition module, for obtaining the second parameter, described second parameter is the parameter of the second motor, and described second parameter makes car load meet default tractive performance requirement.
7. device according to claim 6, is characterized in that, described first parameter meets following condition:
Under driving power-assisted and driving generating two kinds of patterns, make driving engine along the work of optimal fuel economy curve; And, under power generation cascade pattern, make engine operation in specific consumption of fuel smallest point.
8. device according to claim 6, is characterized in that, described second parameter meets following condition:
The peak parameters of the second parameter meets hill start index, and maximum speed and acceleration capability requirement under pure electronic operating mode.
9. the device according to any one of claim 6-8, is characterized in that, described first acquisition module comprises:
First module, for determining the demand power of described automobile under default operating mode;
Second unit, at universal characteristic curve of engine, determines full-throttle characteristics, optimal fuel economy curve, minimal torque curve, and the equipower curve that described demand power is corresponding;
Unit the 3rd, for obtaining the intrinsic curve of described full-throttle characteristics and described equipower curve composition, and the moment of torsion difference obtained between described intrinsic curve and described optimal fuel economy curve, and according to the corresponding relation determination torque increase curve of described difference and rotating speed;
Unit the 4th, for obtaining the moment of torsion difference between described minimal torque curve and described optimal fuel economy curve, and falls discharge curve according to the corresponding relation determination moment of torsion of described difference and rotating speed;
Unit the 5th, for corresponding moment of torsion and rotating speed time minimum according to driving engine specific consumption of fuel, calculates magnitude of power during power generation cascade;
Unit the 6th, for according to described torque increase curve, discharge curve falls in described moment of torsion, and magnitude of power during described power generation cascade, determine the first parameter, wherein, first parameter comprises the driving torque under each rotating speed, power generation torque under each rotating speed, power of motor and electrical efficiency, and the driving torque under each rotating speed is greater than the torque increase of corresponding rotating speed in described torque increase curve, power generation torque under each rotating speed is less than the moment of torsion amount of falling that corresponding rotating speed in discharge curve falls in described moment of torsion, described power of motor is greater than magnitude of power during described power generation cascade, and the distance at the vertex of described electrical efficiency and the minimum place of driving engine specific consumption of fuel is minimum.
10. the device according to any one of claim 6-8, is characterized in that, described second acquisition module comprises:
Unit the 7th, for according to hill start index request, determines the peak torque of the second motor;
Unit the 8th, for according to maximum speed requirement under pure electronic operating mode, determines the maximum speed of revolution of the second motor;
Unit the 9th, for selecting the motor meeting described peak torque and described maximum speed of revolution as the second motor in existing motor;
Unit the tenth, judges to adopt the motor selected whether to meet maximum speed, pick-up time and max. climb slope requirement;
Unit the 11, for when not meeting, increasing the peak power of the second motor according to preset ratio and rejudging until meet the demands, when meeting the demands, the parameter of the motor of selection being defined as the second parameter.
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| CN106882081A (en) * | 2017-03-13 | 2017-06-23 | 福州大学 | Based on the dual-motor pure electric automobile energy management method that instantaneous energy consumption is minimum |
| CN110155034A (en) * | 2019-05-31 | 2019-08-23 | 吉林大学 | A kind of matching process inputting distribution formula hybrid power system planet row characteristic parameter |
| CN112334346A (en) * | 2018-06-20 | 2021-02-05 | 舍弗勒技术股份两合公司 | Drive unit and drive device |
| CN112389411A (en) * | 2020-11-20 | 2021-02-23 | 三一重型装备有限公司 | Hybrid vehicle engine control method, vehicle and readable storage medium |
| CN113022544A (en) * | 2021-04-29 | 2021-06-25 | 吉林大学 | Power split type hybrid power system and parameter matching method thereof |
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| CN112389411A (en) * | 2020-11-20 | 2021-02-23 | 三一重型装备有限公司 | Hybrid vehicle engine control method, vehicle and readable storage medium |
| CN113022544A (en) * | 2021-04-29 | 2021-06-25 | 吉林大学 | Power split type hybrid power system and parameter matching method thereof |
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