CN107444193A - new energy automobile motor output torque control method - Google Patents
new energy automobile motor output torque control method Download PDFInfo
- Publication number
- CN107444193A CN107444193A CN201710717160.1A CN201710717160A CN107444193A CN 107444193 A CN107444193 A CN 107444193A CN 201710717160 A CN201710717160 A CN 201710717160A CN 107444193 A CN107444193 A CN 107444193A
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- Prior art keywords
- temp
- power
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- air
- volt
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides New energy automobile motor output torque control method, it comprises the following steps：Judge that volt is more than whether volt_med is true, if very then A-battery voltage need not charging；Volt is that vacation then sets P_dcdc=P1 more than volt_med；Obtain air-conditioner temperature difference Temp_diff；It is positive integer to judge whether Temp_diff is more than the setting temperature difference N, N, and P_fan=0 is then set if less than N；If greater than N, P_fan=P2 is then set；Air conditioner compressed mechanism cold is controlled until temperature stabilization；Obtain P_m1=P_max P_fan P_dcdc；Entire car controller compares P_m1 and P_m2 size, is P_m values according to result；It is final to obtain T_max；Acquire electricity and drive requested torque T_ref；Electricity is driven into requested torque T_ref and sends control of the electric machine controller completion to motor to.The dynamic property power distribution that the present invention is optimal by the power of Reasonable adjustment motor, the present invention directly in the case where the power of battery is constant, can ensure the power performance of vehicle without extra hardware and sensor.
Description
Technical field
The present invention relates to field of new energy technologies, particularly a kind of New energy automobile motor output torque control method.
Background technology
The power index of electric automobile is mainly represented by max. speed, acceleration capacity and max. climb slope, is automobile
Most basic and most important performance in performance.Electrokinetic cell peak power output is certain when designing electric automobile, existing
Often dynamic property decay is serious when turning on the aircondition refrigeration for electric automobile automobile, causes acceleration capacity poor, and climbing is painstaking, during high speed more
To be obvious.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of New energy automobile motor output torque control method, its
Comprise the following steps：
S1：Entire car controller gathers the magnitude of voltage volt of A-battery, and the load voltage value of A-battery is volt_med,
Judge that volt is more than whether volt_med is true, if very need not then charging in the A-battery voltage abundance short time；
S2：To meet the optimal dynamic property of vehicle, ensure motor Maximum Power Output, the voltage for setting electric automobile turns
Parallel operation dc-dc demand power output P_dcdc is 0, i.e. P_dcdc=0, and voltage is set if volt is vacation more than volt_med
Converter dc-dc demand power output is itself rating requirements power P 1, i.e. P_dcdc=P1；
S3：The temperature value temp and demand temperature value temp_set of air-conditioning setting in entire car controller collecting vehicle, by temp
Make the difference to obtain air-conditioner temperature difference Temp_diff, i.e. Temp_diff=temp-temp_set with temp_set；
S4：When the Temp_diff obtained in S3 is more than 0, judge whether Temp_diff is more than setting temperature difference N, wherein N
For positive integer, if less than N then without air conditioner refrigerating, air conditioning requirements power P _ fan=0 is set；
Air conditioner refrigerating is then needed if greater than N, it is air conditioner refrigerating volume to set air conditioning requirements power P _ fan=P2, wherein P2
Determine power；Obtained air conditioning requirements power P _ fan is transferred to air-conditioner controller by CAN, air-conditioner controller is according to sky
Demand power P_fan value is adjusted to control air conditioner compressed mechanism cold until the demand temperature value temp_ that temperature stabilization is set in air-conditioning
set；
S5：Entire car controller obtains the maximum allowable output work of electrokinetic cell by CAN at battery management system BMS
Rate P_max, P_max subtract the P_fan obtained in the P_dcdc and step S4 obtained in step S2 and obtain motor permission
Peak power P_m1, i.e. P_m1=P_max-P_fan-P_dcdc；
S6：While step S5 is carried out, entire car controller obtains motor external characteristics by CAN from electric machine controller
The peak power P_m2 that curve can export, entire car controller compare P_m1 and P_m2 size, if P_m1 is more than P_m2
Set electric drive largest request power P _ m value to take P_m2, otherwise set P_m value to take P_m1；
S7：T_max is obtained by motor speed and power relation formula P_m=T_max*speed/9550, wherein T_max is
For the entire car controller for needing to obtain to the maximum allowable requested torque of electric machine controller, speed is motor speed；
S8：Entire car controller collection throttle signal obtains throttle percentage P_percent, P_percent with being obtained in S8
T_max be multiplied to obtain electricity and drive requested torque T_ref, i.e. T-ref=T_max*P_percent；
S9：Electricity is driven requested torque T_ref by CAN and sends electric machine controller, motor control to by entire car controller
Device obtains control of the best torque output completion to motor.
The invention has the advantages that：
Electric automobile power battery power output is divided into air-conditioning, A-battery dcdc chargings, motor three by the present invention
Major class；When needing to accelerate, the power demand priority of motor is optimal higher than A-battery dcdc chargings and air-conditioning
Dynamic property power distribution, this method without extra hardware and sensor in the case of the power of battery is certain, improve vehicle
Dynamic property.
Certainly, any product for implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, used required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is step S1 to S2 provided in an embodiment of the present invention schematic flow sheet；
Fig. 2 is step S3 to S4 provided in an embodiment of the present invention schematic flow sheet
Fig. 3 is step S5 to S9 provided in an embodiment of the present invention schematic flow sheet.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The invention provides a kind of New energy automobile motor output torque control method, it comprises the following steps：
It is as shown in Figure 1 step S1 to S2 schematic flow sheet, specific S1：Entire car controller gathers the electricity of A-battery
Pressure value volt, the load voltage value of A-battery is volt_med, judges whether volt more than volt_med is true, if very then
A-battery need not charge in the voltage abundance short time；
S2：To meet the optimal dynamic property of vehicle, ensure motor Maximum Power Output, the voltage for setting electric automobile turns
Parallel operation dc-dc demand power output P_dcdc is 0, i.e. P_dcdc=0, and voltage is set if volt is vacation more than volt_med
Converter dc-dc demand power output is itself rating requirements power P 1, i.e. P_dcdc=P1；
Step S3 is illustrated in figure 2 to S4 schematic flow sheets, S3：Temperature value temp and air-conditioning in entire car controller collecting vehicle
The demand temperature value temp_set of setting, temp and temp_set are made the difference to obtain air-conditioner temperature difference Temp_diff, i.e. Temp_
Diff=temp-temp_set；
S4：When the Temp_diff obtained in S3 is more than 0, judge whether Temp_diff is more than setting temperature difference N, wherein N
For positive integer, if less than N then without air conditioner refrigerating, air conditioning requirements power P _ fan=0 is set；
Air conditioner refrigerating is then needed if greater than N, it is air conditioner refrigerating volume to set air conditioning requirements power P _ fan=P2, wherein P2
Determine power；Obtained air conditioning requirements power P _ fan is transferred to air-conditioner controller by CAN, air-conditioner controller is according to sky
Demand power P_fan value is adjusted to control air conditioner compressed mechanism cold until the demand temperature value temp_ that temperature stabilization is set in air-conditioning
set；
Step S5 to S9 provided in an embodiment of the present invention schematic flow sheet is illustrated in figure 3, is specifically：S5：Vehicle
Controller obtains at battery management system BMS electrokinetic cell maximum allowable power output P_max by CAN, and P_max subtracts
The P_fan obtained in the P_dcdc for going in step S2 to obtain and step S4 obtains the peak power P_m1 of motor permission, i.e.,
P_m1=P_max-P_fan-P_dcdc；
S6：While step S5 is carried out, entire car controller obtains motor external characteristics by CAN from electric machine controller
The peak power P_m2 that curve can export, entire car controller compare P_m1 and P_m2 size, if P_m1 is more than P_m2
Set electric drive largest request power P _ m value to take P_m2, otherwise set P_m value to take P_m1；
S7：T_max is obtained by motor speed and power relation formula P_m=T_max*speed/9550, wherein T_max is
For the entire car controller for needing to obtain to the maximum allowable requested torque of electric machine controller, speed is motor speed；
S8：Entire car controller collection throttle signal obtains throttle percentage P_percent, P_percent with being obtained in S8
T_max be multiplied to obtain electricity and drive requested torque T_ref, i.e. T-ref=T_max*P_percent；
S9：Electricity is driven requested torque T_ref by CAN and sends electric machine controller, motor control to by entire car controller
Device obtains control of the best torque output completion to motor.
Electric automobile power battery power output is divided into air-conditioning, A-battery dcdc chargings, motor three by the present invention
Major class；When needing to accelerate, the power demand priority of motor is optimal higher than A-battery dcdc chargings and air-conditioning
Dynamic property power distribution, this method without extra hardware and sensor in the case of the power of battery is certain, improve vehicle
Dynamic property.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (1)
1. New energy automobile motor output torque control method, it is characterised in that comprise the following steps：
S1：Entire car controller gathers the magnitude of voltage volt of A-battery, and the load voltage value of A-battery is volt_med, judges
Volt is more than whether volt_med is true, if very need not then charging in the A-battery voltage abundance short time；
S2：To meet the optimal dynamic property of vehicle, ensure motor Maximum Power Output, set the electric pressure converter of electric automobile
Dc-dc demand power output P_dcdc is 0, i.e. P_dcdc=0, and voltage conversion is set if volt is vacation more than volt_med
Device dc-dc demand power output is itself rating requirements power P 1, i.e. P_dcdc=P1；
S3：The temperature value temp and demand temperature value temp_set of air-conditioning setting in entire car controller collecting vehicle, by temp and
Temp_set makes the difference to obtain air-conditioner temperature difference Temp_diff, i.e. Temp_diff=temp-temp_set；
S4：When the Temp_diff obtained in S3 is more than 0, judge whether Temp_diff is more than setting temperature difference N, wherein N for just
Integer, if less than N then without air conditioner refrigerating, air conditioning requirements power P _ fan=0 is set；
Air conditioner refrigerating is then needed if greater than N, it is the specified work(of air conditioner refrigerating to set air conditioning requirements power P _ fan=P2, wherein P2
Rate；Obtained air conditioning requirements power P _ fan is transferred to air-conditioner controller by CAN, air-conditioner controller needs according to air-conditioning
Power P _ fan value is asked to control air conditioner compressed mechanism cold until the demand temperature value temp_set that temperature stabilization is set in air-conditioning；
S5：Entire car controller obtains the maximum allowable power output P_ of electrokinetic cell by CAN at battery management system BMS
Max, P_max subtract the P_fan obtained in the P_dcdc and step S4 obtained in step S2 and obtain the maximum of motor permission
Power P _ m1, i.e. P_m1=P_max-P_fan-P_dcdc；
S6：While step S5 is carried out, entire car controller obtains motor external characteristic curve by CAN from electric machine controller
The peak power P_m2 that can be exported, entire car controller compare P_m1 and P_m2 size, are set if P_m1 is more than P_m2
Electric drive largest request power P _ m value takes P_m2, otherwise sets P_m value to take P_m1；
S7：T_max is obtained by motor speed and power relation formula P_m=T_max*speed/9550, wherein T_max is needs
For the entire car controller of acquisition to the maximum allowable requested torque of electric machine controller, speed is motor speed；
S8：Entire car controller collection throttle signal obtains the T_ obtained in throttle percentage P_percent, P_percent and S8
Max is multiplied to obtain electricity drive requested torque T_ref, i.e. T-ref=T_max*P_percent；
S9：Electricity is driven requested torque T_ref by CAN and sends electric machine controller to by entire car controller, and electric machine controller obtains
The control to motor is completed to best torque output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717160.1A CN107444193A (en) | 2017-08-21 | 2017-08-21 | new energy automobile motor output torque control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717160.1A CN107444193A (en) | 2017-08-21 | 2017-08-21 | new energy automobile motor output torque control method |
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| Publication Number | Publication Date |
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| CN107444193A true CN107444193A (en) | 2017-12-08 |
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|---|---|---|---|
| CN201710717160.1A Pending CN107444193A (en) | 2017-08-21 | 2017-08-21 | new energy automobile motor output torque control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915449A (en) * | 2010-09-15 | 2010-12-15 | 宁波奥克斯空调有限公司 | Constant temperature dehumidification control method and device for heat pump type air conditioner |
| US20140172214A1 (en) * | 2012-12-18 | 2014-06-19 | Kia Motors Corporation | Method and system for setting motor torque for hybrid vehicle |
| CN106042964A (en) * | 2016-06-27 | 2016-10-26 | 北京新能源汽车股份有限公司 | Control method and device for low-pressure accumulator of electric automobile and electric automobile |
| CN106427657A (en) * | 2016-12-07 | 2017-02-22 | 东南（福建）汽车工业有限公司 | Energy flow control method for electronic automobile |
| CN106740197A (en) * | 2016-12-13 | 2017-05-31 | 华晨汽车集团控股有限公司 | The EMS of electric automobile |
-
2017
- 2017-08-21 CN CN201710717160.1A patent/CN107444193A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915449A (en) * | 2010-09-15 | 2010-12-15 | 宁波奥克斯空调有限公司 | Constant temperature dehumidification control method and device for heat pump type air conditioner |
| US20140172214A1 (en) * | 2012-12-18 | 2014-06-19 | Kia Motors Corporation | Method and system for setting motor torque for hybrid vehicle |
| CN106042964A (en) * | 2016-06-27 | 2016-10-26 | 北京新能源汽车股份有限公司 | Control method and device for low-pressure accumulator of electric automobile and electric automobile |
| CN106427657A (en) * | 2016-12-07 | 2017-02-22 | 东南（福建）汽车工业有限公司 | Energy flow control method for electronic automobile |
| CN106740197A (en) * | 2016-12-13 | 2017-05-31 | 华晨汽车集团控股有限公司 | The EMS of electric automobile |
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Application publication date: 20171208 |