CN110758376A - Control method and control device of double-planet-row hybrid power system and vehicle - Google Patents
Control method and control device of double-planet-row hybrid power system and vehicle Download PDFInfo
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- CN110758376A CN110758376A CN201910913961.4A CN201910913961A CN110758376A CN 110758376 A CN110758376 A CN 110758376A CN 201910913961 A CN201910913961 A CN 201910913961A CN 110758376 A CN110758376 A CN 110758376A
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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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
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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
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
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- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a control method and a control device of a double-planet-row hybrid power system and a vehicle. The method comprises the following steps: the control method comprises the following steps: calculating an engine stop demand torque curve according to a fastest engine stop rotating speed curve; calculating the set rotating speed of the ISG motor according to the rotating speed of the MT motor and the set rotating speed of the engine and the lever relation of a double-planet-row hybrid power system, and calculating a speed regulation demand torque curve of the ISG motor according to the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor; calculating a negative maximum value of the ISG motor generating torque limited by the system according to the battery charging power limit, the motor recovery power and the ISG motor characteristic; and taking a large value for each control time point in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by a system, thereby obtaining a set torque curve of the ISG motor.
Description
Technical Field
The invention belongs to the field of hybrid vehicles, and particularly relates to a control method and a control device of a double-planet-row hybrid power system and a vehicle.
Background
The structure of a conventional double-planet-row hybrid power system is shown in fig. 1, and the system comprises an engine 1, a first motor 2, a second motor 3, a planet row i 4 and a planet row ii 5, wherein the connection relationship among the components in the system is as follows: the rotor shaft of the first motor 2 is connected with the sun gear 41 of the planet row I4, the sun gear 51 of the planet row II 5 is connected with the rotor shaft of the second motor 3, the engine 1 is connected with the planet carrier 42 of the planet row I4, and the gear ring 43 of the planet row I4 is connected with the planet carrier 52 of the planet row II 5 and the system output shaft 6 in sequence. In the above-described double planetary row hybrid system, there are two elements that can be used as power sources, i.e., the engine 1 or the second electric machine 3, while the first electric machine 2 is used to pull the engine 1 to start when the engine 1 is started, and to pull the engine 1 to stop when the engine 1 needs to be stopped. In this system, the second motor 3 is referred to as an MT motor, and the first motor 2 is referred to as an ISG motor.
In the process of stopping the engine 1, in order to prevent the inertia moment of the engine 1 from causing severe shaking of the whole vehicle, the engine 1 is generally dragged and stopped by using the ISG motor, in the process of dragging and stopping the engine 1 by using the ISG motor, the torque setting of the ISG motor is important, and both too large and too small of the ISG motor can generate adverse effects, for example, when the torque setting of the ISG motor is too large, the dragged engine 1 may be reversely rotated, and when the torque setting of the ISG motor is too small, the recovered energy can be lower, so that the economy of the whole vehicle is not facilitated. Therefore, how to reasonably control the torque of the ISG motor in the process of dragging and stopping the engine by the ISG motor is an urgent problem to be solved.
Disclosure of Invention
The invention aims to at least solve the problem of reasonably controlling the torque of the ISG motor in the process of dragging and stopping the engine by the ISG motor. The purpose is realized by the following technical scheme:
the invention provides a control method of a double-planet-row hybrid power system, which is characterized by comprising the following steps:
calculating an engine stop demand torque curve according to a fastest engine stop rotating speed curve;
calculating the set rotating speed of the ISG motor according to the rotating speed of the MT motor and the set rotating speed of the engine and the lever relation of a double-planet-row hybrid power system, and calculating a speed regulation demand torque curve of the ISG motor according to the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor;
calculating a negative maximum value of the ISG motor generating torque limited by the system according to the battery charging power limit, the motor recovery power and the ISG motor characteristic;
taking a large value for each control time point in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by a system, thereby obtaining a set torque curve of the ISG motor;
and controlling the torque of the ISG motor according to the set torque curve of the ISG motor.
According to the control method of the double-planet-row hybrid power system of the embodiment of the invention, in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by the system, the big value is taken for each control time point (since the three values are all negative values, the big value is the minimum value of the absolute value), so as to obtain the set torque curve of the ISG motor, the set torque curve takes into account the factors of the fastest stop rotating speed curve of the engine, the structure of the double-planet-row hybrid power system, the working conditions and characteristics of the engine, the MT motor and the ISG motor, the limitation of battery charging power, the recovery power of the motor and the like, therefore, the control method in the embodiment of the invention can relatively reasonably control the torque of the ISG motor in the process of dragging and stopping the engine by the ISG motor.
In some embodiments of the invention, the control method further comprises:
acquiring real-time torque of the ISG motor and real-time rotating speed of an engine;
calculating the time length required by torque clearing completion by taking the real-time torque as a reference;
comparing the real-time rotating speed with the fastest stopping rotating speed curve of the engine to obtain the estimated stopping time;
calculating a time difference value according to the estimated halt time and the time required by torque clearing completion;
comparing the time length difference value with a preset time length threshold value;
and controlling the ISG motor to carry out torque clearing according to the result that the time length difference value is less than or equal to a preset time length threshold value.
In some embodiments of the invention, the control method further comprises:
and setting a fastest stop rotating speed curve of the engine according to the running working condition of the engine.
In some embodiments of the invention, the parameters of the engine operating conditions include at least engine oil temperature and exhaust brake conditions.
In some embodiments of the invention, the control method further comprises:
and carrying out PID calculation on the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor to obtain a speed regulation required torque curve of the ISG motor.
A second aspect of the present invention provides a control apparatus of a double planetary row hybrid system, including:
the calculation module is used for calculating an engine stop demand torque curve according to a fastest engine stop rotating speed curve; the calculation module is also used for calculating the set rotating speed of the ISG motor according to the rotating speed of the MT motor and the set rotating speed of the engine in combination with the lever relationship of the double-planet-row hybrid power system, and calculating a speed regulation required torque curve of the ISG motor according to the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor; the calculation module is also used for calculating the negative maximum value of the ISG motor generating torque limited by the system according to the battery charging power limit, the motor recovery power and the ISG motor characteristics;
the comparison module is used for carrying out a large operation on each control time point in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by a system so as to obtain a set torque curve of the ISG motor;
and the control module is used for controlling the torque of the ISG motor according to the set torque curve of the ISG motor.
In some embodiments of the present invention, the control device further comprises a measuring module, wherein the measuring module is used for acquiring real-time torque of the ISG motor and real-time rotating speed of an engine;
the calculation module is also used for calculating the time length required by torque clearing completion by taking the real-time torque as a reference, and calculating a time length difference value according to the estimated shutdown time length and the time length required by torque clearing completion;
the comparison module is also used for comparing the real-time rotating speed with a curve of the fastest stopping rotating speed of the engine to obtain the estimated stopping time and comparing the time difference with a preset time threshold;
the control module is further used for controlling the ISG motor to carry out torque clearing according to the result that the time length difference value is smaller than or equal to a preset time length threshold value.
In some embodiments of the invention, the calculation module is further configured to set a fastest stop engine speed profile based on engine operating conditions.
A third aspect of the invention proposes a vehicle comprising:
a double-row planetary hybrid system; and
the control device of the double-planetary-row hybrid power system in any one of the embodiments.
In some embodiments of the present invention, the double planetary row hybrid system comprises: the planetary gear train comprises an engine, a first motor, a second motor, a planetary gear train I and a planetary gear train II, wherein a rotor shaft of the first motor is connected with a sun gear of the planetary gear train I, a sun gear of the planetary gear train II is connected with a rotor shaft of the second motor, the engine is connected with a planetary carrier of the planetary gear train I, and a gear ring of the planetary gear train I is sequentially connected with the planetary carrier of the planetary gear train II and a system output shaft.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
FIG. 1 is a schematic illustration of a dual planetary row hybrid powertrain of a vehicle in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of a control method of a dual planetary row hybrid powertrain system of an embodiment of the present invention;
fig. 3 is a schematic diagram of a control apparatus of a double planetary row hybrid system of an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 2, an embodiment of a first aspect of the invention proposes a control method of a double-planetary-row hybrid system, the control method including:
calculating an engine stop demand torque curve according to a fastest engine stop rotating speed curve;
calculating the set rotating speed of the ISG motor according to the rotating speed of the MT motor and the set rotating speed of the engine and the lever relation of a double-planet-row hybrid power system, and calculating a speed regulation demand torque curve of the ISG motor according to the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor;
calculating a negative maximum value of the ISG motor generating torque limited by the system according to the battery charging power limit, the motor recovery power and the ISG motor characteristic;
taking a large value for each control time point in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by a system, thereby obtaining a set torque curve of the ISG motor;
and controlling the torque of the ISG motor according to the set torque curve of the ISG motor.
According to the control method of the double-planet-row hybrid power system of the embodiment of the invention, in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by the system, the big value is taken for each control time point (since the three values are all negative values, the big value is the minimum value of the absolute value), so as to obtain the set torque curve of the ISG motor, the set torque curve takes into account the factors of the fastest stop rotating speed curve of the engine, the structure of the double-planet-row hybrid power system, the working conditions and characteristics of the engine, the MT motor and the ISG motor, the limitation of battery charging power, the recovery power of the motor and the like, therefore, the control method in the embodiment of the invention can relatively reasonably control the torque of the ISG motor in the process of dragging and stopping the engine by the ISG motor.
It should be noted that the fastest stop speed curve of the engine can be obtained by calculation according to the conditions of the engine oil temperature, the exhaust brake and the like, and when the engine performs speed control according to the fastest stop speed curve, the fastest stop of the engine can be realized, so that the system economy is better.
In some embodiments of the invention, the control method further comprises:
acquiring real-time torque of the ISG motor and real-time rotating speed of an engine;
calculating the time length required by torque clearing completion by taking the real-time torque as a reference;
comparing the real-time rotating speed with the fastest stopping rotating speed curve of the engine to obtain the estimated stopping time;
calculating a time difference value according to the estimated halt time and the time required by torque clearing completion;
comparing the time length difference value with a preset time length threshold value;
and controlling the ISG motor to carry out torque clearing according to the result that the time length difference value is less than or equal to a preset time length threshold value.
If the torque is cleared for the ISG motor after the engine rotation speed is reduced to 0, the torque reduction can be completed within a period of time, so that the torque of the ISG motor can drag the engine to rotate reversely after the engine rotation speed is 0, and therefore, it is very important to control the torque clearing time to prevent the engine from being dragged reversely.
In the embodiment, the time length required by torque clearing is calculated according to the real-time torque of the ISG motor, the expected halt time length is calculated according to the real-time rotating speed of the engine and by combining with the fastest halt rotating speed curve of the engine, then the ISG motor is controlled to clear the torque according to the result that the difference value between the expected halt time length and the time length required by torque clearing is larger than or equal to the preset time length threshold value, therefore, the rotating speed of the engine is close to 0 but not reduced to 0 when the torque clearing is finished, and further, in the engine halt process, the engine cannot be dragged backwards and reversely on the premise that the economy of the whole vehicle is guaranteed.
In some embodiments of the invention, the control method further comprises:
and carrying out PID calculation on the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor to obtain a speed regulation required torque curve of the ISG motor.
As shown in fig. 3, an embodiment of a second aspect of the present invention proposes a control apparatus 100 of a double planetary row hybrid system, including:
the calculating module 10 is used for calculating an engine stop demand torque curve according to a fastest engine stop rotating speed curve; the calculation module is also used for calculating the set rotating speed of the ISG motor according to the rotating speed of the MT motor and the set rotating speed of the engine in combination with the lever relationship of the double-planet-row hybrid power system, and calculating a speed regulation required torque curve of the ISG motor according to the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor; the calculation module is also used for calculating the negative maximum value of the ISG motor generating torque limited by the system according to the battery charging power limit, the motor recovery power and the ISG motor characteristics;
the comparison module 20 is used for carrying out a large operation on each control time point in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by a system, so as to obtain a set torque curve of the ISG motor;
and the control module 30 is used for controlling the torque of the ISG motor according to the set torque curve of the ISG motor.
In some embodiments of the present invention, the control device further comprises a measuring module 40, wherein the measuring module 40 is used for acquiring the real-time torque of the ISG motor and the real-time rotating speed of the engine;
the calculation module 10 is further configured to calculate a time length required for torque clearing based on the real-time torque, and calculate a time length difference according to the estimated shutdown time length and the time length required for torque clearing;
the comparison module 20 is further configured to compare the real-time rotation speed with a fastest engine stop rotation speed curve to obtain a predicted stop time length, and compare the time length difference with a preset time length threshold;
the control module 30 is further configured to control the ISG motor to perform torque clearing according to a result that the duration difference is less than or equal to a preset duration threshold.
In some embodiments of the invention, the calculation module 10 is further configured to set a fastest engine stop speed profile based on engine operating conditions.
An embodiment of a third aspect of the invention proposes a vehicle comprising:
a double-row planetary hybrid system; and a control device of the double-planetary-row hybrid power system in any one of the embodiments.
In some embodiments of the present invention, the double planetary row hybrid system comprises: the planetary gear train comprises an engine, a first motor, a second motor, a planetary gear train I and a planetary gear train II, wherein a rotor shaft of the first motor is connected with a sun gear of the planetary gear train I, a sun gear of the planetary gear train II is connected with a rotor shaft of the second motor, the engine is connected with a planetary carrier of the planetary gear train I, and a gear ring of the planetary gear train I is sequentially connected with the planetary carrier of the planetary gear train II and a system output shaft.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A control method of a double-planetary-row hybrid system, characterized by comprising:
calculating an engine stop demand torque curve according to a fastest engine stop rotating speed curve;
calculating the set rotating speed of the ISG motor according to the rotating speed of the MT motor and the set rotating speed of the engine and the lever relation of a double-planet-row hybrid power system, and calculating a speed regulation demand torque curve of the ISG motor according to the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor;
calculating a negative maximum value of the ISG motor generating torque limited by the system according to the battery charging power limit, the motor recovery power and the ISG motor characteristic;
taking a large value for each control time point in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by a system, thereby obtaining a set torque curve of the ISG motor;
and controlling the torque of the ISG motor according to the set torque curve of the ISG motor.
2. The control method of a double row planetary hybrid powertrain system as claimed in claim 1, further comprising:
acquiring real-time torque of the ISG motor and real-time rotating speed of an engine;
calculating the time length required by torque clearing completion by taking the real-time torque as a reference;
comparing the real-time rotating speed with the fastest stopping rotating speed curve of the engine to obtain the estimated stopping time;
calculating a time difference value according to the estimated halt time and the time required by torque clearing completion;
comparing the time length difference value with a preset time length threshold value;
and controlling the ISG motor to carry out torque clearing according to the result that the time length difference value is less than or equal to a preset time length threshold value.
3. The control method of a double row planetary hybrid powertrain system as claimed in claim 1, further comprising:
and setting a fastest stop rotating speed curve of the engine according to the running working condition of the engine.
4. The control method of a dual bank hybrid powertrain system of claim 3 wherein the parameters of the engine operating conditions include at least engine oil temperature and exhaust brake conditions.
5. The control method of a double row planetary hybrid powertrain system as claimed in claim 1, further comprising:
and carrying out PID calculation on the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor to obtain a speed regulation required torque curve of the ISG motor.
6. A control apparatus of a double-planetary-row hybrid system, characterized by comprising:
the calculation module is used for calculating an engine stop demand torque curve according to a fastest engine stop rotating speed curve; the calculation module is also used for calculating the set rotating speed of the ISG motor according to the rotating speed of the MT motor and the set rotating speed of the engine in combination with the lever relationship of the double-planet-row hybrid power system, and calculating a speed regulation required torque curve of the ISG motor according to the set rotating speed of the ISG motor and the actual rotating speed of the ISG motor; the calculation module is also used for calculating the negative maximum value of the ISG motor generating torque limited by the system according to the battery charging power limit, the motor recovery power and the ISG motor characteristics;
the comparison module is used for carrying out a large operation on each control time point in an engine stop demand torque curve, an ISG motor speed regulation demand torque curve and a negative maximum value of ISG motor generating torque limited by a system so as to obtain a set torque curve of the ISG motor;
and the control module is used for controlling the torque of the ISG motor according to the set torque curve of the ISG motor.
7. The control device of a double-row planetary hybrid system as claimed in claim 6, further comprising a measuring module for obtaining a real-time torque of the ISG motor and a real-time rotation speed of an engine;
the calculation module is also used for calculating the time length required by torque clearing completion by taking the real-time torque as a reference, and calculating a time length difference value according to the estimated shutdown time length and the time length required by torque clearing completion;
the comparison module is also used for comparing the real-time rotating speed with a curve of the fastest stopping rotating speed of the engine to obtain the estimated stopping time and comparing the time difference with a preset time threshold;
the control module is further used for controlling the ISG motor to carry out torque clearing according to the result that the time length difference value is smaller than or equal to a preset time length threshold value.
8. The control device of a double row planetary hybrid powertrain system as in claim 6, wherein the calculation module is further configured to set a fastest shutdown speed profile of the engine based on engine operating conditions.
9. A vehicle, characterized by comprising:
a double-row planetary hybrid system; and
the control device of a double planetary row hybrid system according to any one of claims 6 to 8.
10. The vehicle of claim 9, characterized in that the double row planetary hybrid system comprises: the planetary gear train comprises an engine, a first motor, a second motor, a planetary gear train I and a planetary gear train II, wherein a rotor shaft of the first motor is connected with a sun gear of the planetary gear train I, a sun gear of the planetary gear train II is connected with a rotor shaft of the second motor, the engine is connected with a planetary carrier of the planetary gear train I, and a gear ring of the planetary gear train I is sequentially connected with the planetary carrier of the planetary gear train II and a system output shaft.
Priority Applications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009450A (en) * | 2020-07-28 | 2020-12-01 | 江西五十铃汽车有限公司 | Range extender operation point switching control method based on power prediction |
| CN114734977A (en) * | 2021-01-07 | 2022-07-12 | 长沙中车智驭新能源科技有限公司 | Control method and system of hybrid system, computer equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1319546A1 (en) * | 2001-12-12 | 2003-06-18 | Siemens Aktiengesellschaft | Drive train for vehicle with internal combustion engine, starter-generator and manual shift transmission |
| CN101267971A (en) * | 2005-11-07 | 2008-09-17 | 丰田自动车株式会社 | Hybrid vehicle and control method thereof |
| CN103863323A (en) * | 2012-12-11 | 2014-06-18 | 重庆长安汽车股份有限公司 | Full hybrid electric vehicle energy management system and control method |
| CN107539305A (en) * | 2017-08-25 | 2018-01-05 | 吉林大学 | A kind of dynamic torque control method for coordinating of planetary parallel-serial hybrid power system |
| CN109421692A (en) * | 2017-08-23 | 2019-03-05 | 郑州宇通客车股份有限公司 | A kind of control method and its system of automobile engine using new energy resources |
-
2019
- 2019-09-25 CN CN201910913961.4A patent/CN110758376B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1319546A1 (en) * | 2001-12-12 | 2003-06-18 | Siemens Aktiengesellschaft | Drive train for vehicle with internal combustion engine, starter-generator and manual shift transmission |
| CN101267971A (en) * | 2005-11-07 | 2008-09-17 | 丰田自动车株式会社 | Hybrid vehicle and control method thereof |
| CN103863323A (en) * | 2012-12-11 | 2014-06-18 | 重庆长安汽车股份有限公司 | Full hybrid electric vehicle energy management system and control method |
| CN109421692A (en) * | 2017-08-23 | 2019-03-05 | 郑州宇通客车股份有限公司 | A kind of control method and its system of automobile engine using new energy resources |
| CN107539305A (en) * | 2017-08-25 | 2018-01-05 | 吉林大学 | A kind of dynamic torque control method for coordinating of planetary parallel-serial hybrid power system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009450A (en) * | 2020-07-28 | 2020-12-01 | 江西五十铃汽车有限公司 | Range extender operation point switching control method based on power prediction |
| CN114734977A (en) * | 2021-01-07 | 2022-07-12 | 长沙中车智驭新能源科技有限公司 | Control method and system of hybrid system, computer equipment and storage medium |
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