CN103552481B - A kind of double-motor configuration electric automobile motive power control system and control method - Google Patents
A kind of double-motor configuration electric automobile motive power control system and control method Download PDFInfo
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- CN103552481B CN103552481B CN201310572502.7A CN201310572502A CN103552481B CN 103552481 B CN103552481 B CN 103552481B CN 201310572502 A CN201310572502 A CN 201310572502A CN 103552481 B CN103552481 B CN 103552481B
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Abstract
A kind of double-motor configuration electric automobile motive power control system and control method, belong to power system of electric automobile configuration and control technology field, be specifically related to a kind of power system of electric automobile configuration and control method.The invention solves existing power system of electric automobile and can not be operated in high efficient area and the problem of the energy efficiency difference of the electronlmobil caused, the speed of a motor vehicle that the present invention adopts car speed sensor to detect, the Das Gaspedal aperture that throttle sensor detects, entire car controller calculates the power demand of car load according to the electronlmobil speed of a motor vehicle, throttle and brake pedal aperture, power judges the mode of operation of two motors according to demand, the horsepower output of motor is controlled, make machine operation in high efficient area, the present invention is applicable to control power system of electric automobile.
Description
Technical field
The invention belongs to power system of electric automobile configuration and control technology field, be specifically related to a kind of power system of electric automobile configuration and control method.
Background technology
In the configuration of modern power system of electric automobile, major part is using single motor as Major Systems configuration.This project organization is simple, and control easily, but electrical motor can not be made to be operated in high efficient area, the energy efficiency causing electronlmobil is poor.
Summary of the invention
The present invention can not be operated in high efficient area and the problem of the energy efficiency difference of the electronlmobil caused to solve existing power system of electric automobile, proposes a kind of double-motor configuration power system of electric automobile.
A kind of double-motor configuration power system of electric automobile of the present invention, this system comprises a motor, magnetic-powder clutch, No. two motors, driving device, left side wheel, right side wheels, No. two driving governors, clutch controller, driving governor, entire car controller, car speed sensor, throttle sensor, brake pedal sensor, battery management system and a battery;
The power take-off shaft of a motor is connected with the input shaft of magnetic-powder clutch, the output shaft of magnetic-powder clutch is connected with the power input shaft of No. two motors, the power take-off shaft of No. two motors is connected with driving device, driving device Direct driver left side wheel and right side wheels, the driving signal input of a motor is connected with the drive control signal mouth of a driving governor, the driving signal input of No. two motors connects the drive control signal mouth of No. two driving governors, the control signal input end of magnetic-powder clutch connects the control signal mouth of clutch controller, the control signal input end of clutch controller connects the clutch for clutch control signal output part of entire car controller, the accelerator opening amount signal input end of entire car controller connects the accelerator opening amount signal mouth of throttle sensor, the vehicle speed signal input end of entire car controller connects the vehicle speed signal mouth of car speed sensor, the brake pedal opening amount signal input end of entire car controller connects the brake pedal opening amount signal mouth of brake pedal sensor, the battery charge state signal input part of entire car controller connects the battery charge state signal output part of battery management system, the battery charge state signal input part of battery management system connects battery,
Battery is used for providing direct supply for a motor and No. two motors.
Adopt above-mentioned double-motor configuration power system of electric automobile to realize the control method of automobile power, the concrete steps of the method are:
Step one, car speed sensor detect the speed of a motor vehicle, and throttle sensor detects Das Gaspedal aperture, brake pedal sensor detects brake pedal aperture, the state-of-charge of battery management system to battery detects; And send to entire car controller by detecting the information obtained;
Step 2, entire car controller judge that the state-of-charge of battery is whether lower than the minimum threshold point of battery charge state, if judged result is yes, then clutch controller controls magnetic-powder clutch disconnection, the target power of a motor and No. two motors is set to 0, return step, otherwise, perform step 3;
Step 3, entire car controller judge whether described brake pedal aperture is greater than 0, if judged result is yes, then perform step 4; Otherwise, perform step 5;
Step 4, entire car controller judge whether the speed of a motor vehicle that car speed sensor detects is greater than 0, if judged result is yes, then the brake pedal aperture detected according to brake pedal sensor and the speed of a motor vehicle calculate the B.P. of automobile, reclaim braking energy; Otherwise magnetic-powder clutch disconnects, and the target power of a motor and No. two motors is set to 0, returns step one;
Step 5, entire car controller judge whether the Das Gaspedal aperture that throttle sensor detects is greater than 0, if judge that structure is yes, then calculate car load demand power according to Das Gaspedal aperture and the speed of a motor vehicle, and perform step 6; Otherwise, return step one;
Step 6, entire car controller judge whether car load demand power is greater than the maximum power in an efficient district of motor, if judged result is yes, then clutch control motor and No. two motors export car load target power and return step one; Otherwise power-transfer clutch disconnects, a motor exports car load target power, and No. two motors do not work and return step one;
The efficient district of motor, refers to the horsepower output when work efficiency of motor reaches more than 80%.
The present invention adopts entire car controller to calculate the power demand of car load according to the electronlmobil speed of a motor vehicle, throttle and brake pedal aperture, power judges the mode of operation of two motors according to demand, the horsepower output of motor is controlled, make machine operation in high efficient area, improve the efficiency of electronlmobil, and the energy efficiency of electronlmobil improves about 10% compared with existing power system of electric automobile.
Accompanying drawing explanation
Fig. 1 is double-motor configuration electric automobile motive power control system electrical structure schematic diagram of the present invention.
Detailed description of the invention
Detailed description of the invention one, composition graphs 1 illustrate present embodiment, a kind of double-motor configuration power system of electric automobile described in present embodiment, this system comprises a motor 1, magnetic-powder clutch 2, No. two motors 3, driving device 4, left side wheel 5, right side wheels 6, No. two driving governors 7, clutch controller 8, driving governor 9, entire car controller 10, car speed sensor 11, throttle sensor 12, brake pedal sensor 13, battery management system 14 and a battery 15;
The power take-off shaft of a motor 1 is connected with the input shaft of magnetic-powder clutch 2, the output shaft of magnetic-powder clutch 2 is connected with the power input shaft of No. two motors 3, the power take-off shaft of No. two motors 3 is connected with driving device 4, driving device 4 Direct driver left side wheel 5 and right side wheels 6, the driving signal input of a motor 1 is connected with the drive control signal mouth of a driving governor 9, the driving signal input of No. two motors 3 connects the drive control signal mouth of No. two driving governors 7, the control signal input end of magnetic-powder clutch 2 connects the control signal mouth of clutch controller 8, the control signal input end of clutch controller 8 connects the clutch for clutch control signal output part of entire car controller 10, the accelerator opening amount signal input end of entire car controller 10 connects the accelerator opening amount signal mouth of throttle sensor 12, the vehicle speed signal input end of entire car controller 10 connects the vehicle speed signal mouth of car speed sensor 11, the brake pedal opening amount signal input end of entire car controller 10 connects the brake pedal opening amount signal mouth of brake pedal sensor 13, the battery charge state signal input part of entire car controller 10 connects the battery charge state signal output part of battery management system 14, the battery charge state signal input part of battery management system 14 connects battery 15,
Battery 15 is for providing direct supply for a motor 1 and No. two motors 3.
Detailed description of the invention two, present embodiment are the control methods adopting a kind of double-motor configuration electric automobile motive power control system described in detailed description of the invention one to realize automobile power, and the concrete steps of the method are:
Step one, car speed sensor 11 detect the speed of a motor vehicle, and throttle sensor 12 detects Das Gaspedal aperture, brake pedal sensor 13 detects brake pedal aperture, the state-of-charge of battery management system 14 pairs of batteries detects; And send to entire car controller 10 by detecting the information obtained;
Step 2, entire car controller 10 judge that the state-of-charge of battery is whether lower than the minimum threshold point of battery charge state, if judged result is yes, then clutch controller 8 controls magnetic-powder clutch 2 and disconnects, the target power of a motor 1 and No. two motors 3 is set to 0, return step, otherwise, perform step 3;
Step 3, entire car controller 10 judge whether described brake pedal aperture is greater than 0, if judged result is yes, then perform step 4; Otherwise, perform step 5;
Step 4, entire car controller 10 judge whether the speed of a motor vehicle that car speed sensor 11 detects is greater than 0, if judged result is yes, the brake pedal aperture then detected according to brake pedal sensor 13 and the speed of a motor vehicle calculate the B.P. of automobile, reclaim braking energy; Otherwise magnetic-powder clutch disconnects, and the target power of a motor 1 and No. two motors 3 is set to 0, returns step one;
Step 5, entire car controller 10 judge whether the Das Gaspedal aperture that throttle sensor 12 detects is greater than 0, if judge that structure is yes, then calculate car load demand power according to Das Gaspedal aperture and the speed of a motor vehicle, and perform step 6; Otherwise, return step one;
Step 6, entire car controller 10 judge whether car load demand power is greater than the maximum power in the efficient district of a motor 1, if judged result is yes, then clutch control motor 1 and No. two motors 3 export car load target power and return step one; Otherwise power-transfer clutch disconnects, and a motor 1 exports car load target power, and No. two motors 3 do not work and return step one;
The efficient district of motor, refers to the horsepower output when work efficiency of motor reaches more than 80%.
Detailed description of the invention three, present embodiment realize further illustrating of the control method of automobile power to a kind of double-motor configuration of the employing electric automobile motive power control system described in detailed description of the invention two, in step 4 to the method that braking energy reclaims is:
Step one, entire car controller 10 judge whether the state-of-charge of battery 15 reaches the highest threshold values, if the judgment is Yes, then the target power of a motor 1 and No. two motors 3 is set to 0, continues the speed of a motor vehicle, and the state-of-charge of Das Gaspedal aperture, brake pedal aperture, battery detects; Otherwise, perform step 2;
Step 2, entire car controller 10 judge whether B.P. is greater than the maximum brake power in the efficient district of a motor 1, if judged result is yes, then a motor 1 and No. two motors 3 export target B.P. jointly, and continue the speed of a motor vehicle, the state-of-charge of Das Gaspedal aperture, brake pedal aperture, battery detects; Otherwise a motor 1 exports target B.P., No. two motors 3 do not work, and continue the speed of a motor vehicle, Das Gaspedal aperture, and the state-of-charge of brake pedal aperture and battery detects.
Detailed description of the invention four, present embodiment realize further illustrating of the control method of automobile power to a kind of double-motor configuration of the employing electric automobile motive power control system described in detailed description of the invention two, calculates car load demand power P in step 5 according to Das Gaspedal aperture and the speed of a motor vehicle
1pass through formula:
T
qd=T
qdmaxα
P
1=T
qdω
Obtain, T in formula
qdfor motor target drive torque, T
qdmaxfor motor maximum driving torque, α is Das Gaspedal aperture, P
1for running car demand power, ω is motor actual speed and vehicle speed value.
Detailed description of the invention five, present embodiment realize further illustrating of the control method of automobile power to a kind of double-motor configuration of the employing electric automobile motive power control system described in detailed description of the invention two, and the brake pedal aperture detected according to brake pedal sensor 13 in step 4 and the speed of a motor vehicle calculate the B.P. P of automobile
2pass through formula:
T
qb=T
qbmaxf
brk(β)
P
2=T
qbω
In formula, T
qbfor motor target braking torque, T
qbmaxfor motor maximum braking torque, β is brake pedal aperture, 0< β
1≤ 0.05,0.05< β
2≤ 0.3,0.3< β
3≤ 1, P
2for automobile brake demand power, ω is motor actual speed and vehicle speed value.
Present embodiment is at β
1=0.05, β
2=0.1, β
3car load demand power can be obtained when=1.
Detailed description of the invention six, present embodiment realize further illustrating of the control method of automobile power to a kind of double-motor configuration of the employing electric automobile motive power control system described in detailed description of the invention two, the minimum threshold point of battery charge state described in step 2 be battery charge state peak 20% to 30% between.
Detailed description of the invention seven, present embodiment realize further illustrating of the control method of automobile power to a kind of double-motor configuration of the employing electric automobile motive power control system described in detailed description of the invention three, the highest threshold values of the state-of-charge of battery 15 be the electric charge maxim of battery 80% ~ 90% between.
Claims (7)
1. a double-motor configuration electric automobile motive power control system, it is characterized in that, this system comprises a motor (1), magnetic-powder clutch (2), No. two motors (3), driving device (4), left side wheel (5), right side wheels (6), No. two driving governors (7), clutch controller (8), driving governor (9), entire car controller (10), car speed sensor (11), throttle sensor (12), brake pedal sensor (13), battery management system (14) and a battery (15);
The power take-off shaft of a motor (1) is connected with the input shaft of magnetic-powder clutch (2), the output shaft of magnetic-powder clutch (2) is connected with the power input shaft of No. two motors (3), the power take-off shaft of No. two motors (3) is connected with driving device (4), driving device (4) Direct driver left side wheel (5) and right side wheels (6), the driving signal input of a motor (1) is connected with the drive control signal mouth of a driving governor (9), the driving signal input of No. two motors (3) connects the drive control signal mouth of No. two driving governors (7), the control signal input end of magnetic-powder clutch (2) connects the control signal mouth of clutch controller (8), the control signal input end of clutch controller (8) connects the clutch for clutch control signal output part of entire car controller (10), the accelerator opening amount signal input end of entire car controller (10) connects the accelerator opening amount signal mouth of throttle sensor (12), the vehicle speed signal input end of entire car controller (10) connects the vehicle speed signal mouth of car speed sensor (11), the brake pedal opening amount signal input end of entire car controller (10) connects the brake pedal opening amount signal mouth of brake pedal sensor (13), the battery charge state signal input part of entire car controller (10) connects the battery charge state signal output part of battery management system (14), the battery charge state signal input part of battery management system (14) connects battery (15),
Battery (15) is for providing direct supply for a motor (1) and No. two motors (3).
2. adopt a kind of double-motor configuration electric automobile motive power control system according to claim 1 to realize the control method of automobile power, it is characterized in that, the concrete steps of the method are:
Step one, car speed sensor (11) detect the speed of a motor vehicle, and throttle sensor (12) detects Das Gaspedal aperture, brake pedal sensor (13) detects brake pedal aperture, battery management system (14) state-of-charge to battery detects; And send to entire car controller (10) by detecting the information obtained;
Step 2, entire car controller (10) judge that the state-of-charge of battery is whether lower than the minimum threshold point of battery charge state, if judged result is yes, then clutch controller (8) controls magnetic-powder clutch (2) disconnection, the target power of a motor (1) and No. two motors (3) is set to 0, return step, otherwise, perform step 3;
Step 3, entire car controller (10) judge whether described brake pedal aperture is greater than 0, if judged result is yes, then perform step 4; Otherwise, perform step 5;
Step 4, entire car controller (10) judge whether the speed of a motor vehicle that car speed sensor (11) detects is greater than 0, if judged result is yes, the brake pedal aperture then detected according to brake pedal sensor (13) and the speed of a motor vehicle calculate the B.P. of automobile, reclaim braking energy; Otherwise magnetic-powder clutch disconnects, and the target power of a motor (1) and No. two motors (3) is set to 0, returns step one;
Step 5, entire car controller (10) judge whether the Das Gaspedal aperture that throttle sensor (12) detects is greater than 0, if judge that structure is yes, then calculate car load demand power according to Das Gaspedal aperture and the speed of a motor vehicle, and perform step 6; Otherwise, return step one;
Step 6, entire car controller (10) judge whether car load demand power is greater than the maximum power in the efficient district of a motor (1), if judged result is yes, then clutch control motor (1) and No. two motors (3) export car load target power and return step one; Otherwise power-transfer clutch disconnects, a motor (1) exports car load target power, and No. two motors (3) do not work and return step one;
The efficient district of motor, refers to the horsepower output when work efficiency of motor reaches more than 80%.
3. a kind of double-motor configuration of employing according to claim 2 electric automobile motive power control system realizes the control method of automobile power, it is characterized in that, in step 4 to the method that braking energy reclaims is:
Step 4 one, entire car controller (10) judge whether the state-of-charge of battery (15) reaches the highest threshold values, if the judgment is Yes, then the target power of a motor (1) and No. two motors (3) is set to 0, continue the speed of a motor vehicle, the state-of-charge of Das Gaspedal aperture, brake pedal aperture, battery detects; Otherwise, perform step 4 two;
Step 4 two, entire car controller (10) judge whether B.P. is greater than the maximum brake power in the efficient district of a motor (1), if judged result is yes, then a motor (1) and No. two motors (3) export target B.P. jointly, and continue the speed of a motor vehicle, the state-of-charge of Das Gaspedal aperture, brake pedal aperture, battery detects; Otherwise a motor (1) exports target B.P., and No. two motors (3) do not work, and continue the speed of a motor vehicle, Das Gaspedal aperture, the state-of-charge of brake pedal aperture and battery detects.
4. a kind of double-motor configuration of employing according to claim 2 electric automobile motive power control system realizes the control method of automobile power, it is characterized in that, calculates car load demand power P in step 5 according to Das Gaspedal aperture and the speed of a motor vehicle
1pass through formula:
T
qd＝T
qdmaxα
P
1＝T
qdω
Obtain, in formula, T
qdfor motor target drive torque, T
qdmaxfor motor maximum driving torque, α is Das Gaspedal aperture, and ω is motor actual speed and vehicle speed value.
5. a kind of double-motor configuration of employing according to claim 2 electric automobile motive power control system realizes the control method of automobile power, it is characterized in that, the brake pedal aperture detected according to brake pedal sensor (13) in step 4 and the speed of a motor vehicle calculate the B.P. P of automobile
2pass through formula:
T
qb＝T
qbmaxf
brk(β)
P
2＝T
qbω
In formula, T
qbfor motor target braking torque, T
qbmaxfor motor maximum braking torque, β is brake pedal aperture, 0< β
1≤ 0.05,0.05< β
2≤ 0.3,0.3< β
3≤ 1, P
2for automobile brake demand power, ω is motor actual speed and vehicle speed value.
6. a kind of double-motor configuration of employing according to claim 2 electric automobile motive power control system realizes the control method of automobile power, it is characterized in that, the minimum threshold point of battery charge state described in step 2 be battery charge state peak 20% to 30% between.
7. a kind of double-motor configuration of employing according to claim 3 electric automobile motive power control system realizes the control method of automobile power, it is characterized in that, the highest threshold values of the state-of-charge of battery (15) be the electric charge maxim of battery 80% ~ 90% between.
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| CN103552481B true CN103552481B (en) | 2015-08-12 |
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| CN104210384A (en) * | 2014-09-29 | 2014-12-17 | 奇瑞万达贵州客车股份有限公司 | Pure electric vehicle control system |
| CN105416095B (en) * | 2015-12-29 | 2018-08-17 | 罗公祥 | multi-motor electric vehicle |
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| CN114347805B (en) * | 2022-01-27 | 2022-12-27 | 奇瑞商用车（安徽）有限公司 | Double-motor driving system for integrated vehicle control of electric vehicle and control method thereof |
| CN114425953A (en) * | 2022-02-23 | 2022-05-03 | 江苏联成开拓集团有限公司 | New energy automobile auxiliary power control system and control method thereof |
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| DE102012017239A1 (en) * | 2011-08-31 | 2013-02-28 | Daimler Ag | Hybrid vehicle e.g. passenger car, has motor control unit performing zero-speed control of motor when output shaft speed of transmission is less than predetermined speed to control speed of motor to zero speed |
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Effective date of registration: 20210312 Address after: Room B, F3, building 17, 528 Ruiqing Road, Pudong New Area, Shanghai, 200120 Patentee after: SHANGHAI YIRUITAIKE SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 215500 No.2 Yunshen Road, Changshu high tech Industrial Development Zone, Suzhou City, Jiangsu Province Patentee before: Suzhou Yihydrogen New Energy Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 |