CN110281906B - Range extender closed-loop control method, device and equipment - Google Patents
Range extender closed-loop control method, device and equipment Download PDFInfo
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- CN110281906B CN110281906B CN201910577736.8A CN201910577736A CN110281906B CN 110281906 B CN110281906 B CN 110281906B CN 201910577736 A CN201910577736 A CN 201910577736A CN 110281906 B CN110281906 B CN 110281906B
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
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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
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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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
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
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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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/081—Speed
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Automation & Control Theory (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a closed-loop control method, a device and equipment for a range extender, wherein the range extender comprises a range extender controller, an engine and a generator, the range extender controller is communicated with the range extender, the engine is mechanically connected with the generator, and the method comprises the following steps: receiving an operation instruction sent by the vehicle control unit, and acquiring target power required by the range extender; determining a target rotating speed and a target torque according to the target power; calculating a required rotating speed according to the target power and the actual power of the range extender; calculating a required torque according to the required rotating speed and the actual rotating speed of the range extender; according to the method, the generator is controlled to reach the target rotating speed according to the required torque, so that the output power of the range extender reaches the target power.
Description
Technical Field
The invention relates to the technical field of range extenders, in particular to a range extender closed-loop control method, device and equipment.
Background
The range extender is power generation equipment which is applied to the range-extended electric automobile and used for extending the driving range of the electric automobile, the range extender is started when the electric automobile needs to be charged, the engine drives the generator to generate power, and the power generation power is determined according to the requirement of the whole automobile.
When the electric quantity of the power battery is sufficient, the range extender is closed, and the whole vehicle is in a pure electric working mode. When the electric quantity of the power battery is insufficient, the range extender is opened and switched to the target power requirement to be used for assisting in driving the whole vehicle, and the whole vehicle enters the range extending mode. When the target power requirements of the range extender are switched at different working points, the engine is a mechanical energy conversion device with large inertia and has large mechanical inertia and hysteresis characteristics; the generator has very small inertia and fast response to the outside, which causes that the coupling coordination between the generator and the engine is difficult, the rotating speed overshoot is easy to generate when the working point of the range extender is switched, and the torque impact and the working noise are increased.
The current range extender control is basically open loop control, namely: the generator controls the rotating speed, and the engine controls the torque; or the generator controls torque and the engine controls rotational speed. However, open loop control has one drawback: and the production consistency of the engine and the generator deviates, so that the output power of the range extender deviates from the target power. Ultimately, the energy control of the vehicle is not precise enough, and thus, poor driving feeling may be caused.
Disclosure of Invention
In view of the foregoing problems in the prior art, an object of the present invention is to provide a method, an apparatus and a device for closed-loop control of a range extender.
In order to solve the technical problems, the specific technical scheme of the invention is as follows:
in one aspect, the present invention provides a closed-loop control method for a range extender, the range extender comprises a range extender controller, an engine and a generator, the range extender controller is in communication with the range extender, the engine is mechanically connected with the generator, and the method comprises the following steps:
receiving an operation instruction sent by the vehicle control unit, and acquiring target power required by the range extender;
determining a target rotating speed and a target torque according to the target power;
calculating a required rotating speed according to the target power and the actual power of the range extender;
calculating a required torque according to the required rotating speed and the actual rotating speed of the range extender;
and controlling the generator to reach the target rotating speed according to the required torque so as to enable the output power of the range extender to reach the target power.
Specifically, the method comprises the steps of receiving an operation instruction sent by a vehicle control unit, and acquiring target power required by a range extender; the vehicle control unit calculates the target power of the range extender according to the vehicle energy requirement, and sends the target power to the range extender controller.
Specifically, the step of determining the target rotating speed and the target torque according to the target power comprises the following steps:
determining the target rotating speed according to the corresponding relation between the target power and the target rotating speed;
calculating a target torque according to the target power and the target rotating speed;
and controlling the engine according to the target torque so that the torque of the engine reaches the target torque.
Specifically, the calculated relationship between power, speed, and torque is as follows:
P＝T×N÷9500
wherein P is power, T is torque, and N is rotational speed.
Specifically, the determining the target rotation speed according to the corresponding relationship between the target power and the target rotation speed includes: and obtaining the target rotating speed through table look-up according to a preset target power and target rotating speed corresponding table.
Specifically, the calculating the required rotating speed according to the target power and the actual power of the range extender comprises the following steps:
acquiring the actual power of the range extender;
calculating a power difference value according to the target power and the actual power;
calculating the regulated power through PID control according to the power difference and the target power;
and calculating the required rotating speed according to the adjusting power and the target torque.
Specifically, the calculating of the required torque according to the required rotating speed and the actual rotating speed of the range extender comprises;
acquiring the actual rotating speed of the range extender;
calculating a rotation speed difference value according to the required rotation speed and the actual rotation speed;
calculating an adjusting rotating speed through PID control according to the rotating speed difference and the required rotating speed;
and calculating the required torque according to the adjusting rotating speed and the adjusting power.
In another aspect, the present invention further provides a range extender closed-loop control device, which can implement the control method provided above, and the device includes:
the first acquisition module is used for acquiring target power and target rotating speed required by the range extender;
the first calculation module is used for calculating a target torque according to the target power and the target rotating speed;
the first calculating unit is used for calculating the required rotating speed according to the target power and the actual power of the range extender;
a second calculating unit for calculating the required torque according to the required rotating speed and the actual rotating speed of the range extender
And the first control module is used for controlling the generator to reach the target rotating speed according to the required torque.
Further, the apparatus further comprises:
the storage module is used for storing a corresponding relation table of the target power and the target rotating speed;
the second control module controls the engine according to the target torque so that the torque of the engine reaches the target torque;
specifically, the first calculation unit includes:
the second acquisition module is used for acquiring the actual power of the range extender;
the second calculation module is used for calculating a power difference value according to the target power and the actual power;
the first PID control module calculates the regulated power according to the power difference and the target power;
and the third calculation module is used for calculating the required rotating speed according to the adjusting power and the target torque.
Specifically, the second calculation unit includes:
the third acquisition module is used for acquiring the actual rotating speed of the range extender;
the fourth calculation module is used for calculating a rotating speed difference value according to the required rotating speed and the actual rotating speed;
the second PID control module is used for calculating the adjusting rotating speed according to the rotating speed difference value and the required rotating speed;
and the fifth calculation module is used for calculating the required torque according to the adjusting rotating speed and the adjusting power.
In a third aspect, the invention provides a range extender, which comprises a range extender controller, an engine and a generator, wherein the range extender controller is communicated with the range extender, the engine is mechanically connected with the generator, and the range extender adopts the closed-loop control method of the range extender.
By adopting the technical scheme, the closed-loop control method, the closed-loop control device and the closed-loop control equipment for the range extender have the following beneficial effects:
1. according to the closed-loop control method, device and equipment for the range extender, the power closed-loop control of the range extender is arranged on one side of the generator, so that the power requirement of a whole vehicle controller can be met all the time, and meanwhile, the accuracy of the energy management of the whole vehicle is improved.
2. According to the closed-loop control method, the closed-loop control device and the closed-loop control equipment for the range extender, the engine is subjected to open-loop torque control, the requirement of the range extender on the production consistency of the engine is low, the engine is controlled simply, and the development difficulty is reduced.
3. According to the closed-loop control method, the closed-loop control device and the closed-loop control equipment for the range extender, the power closed-loop control is correspondingly fast due to the fact that the generator has the millisecond-level response speed, and the power requirement of a vehicle can be met rapidly.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a flow chart of a closed-loop control method for a range extender according to the present invention;
FIG. 2 is a block diagram of a first computing unit of the closed-loop control apparatus for a range extender according to the present invention;
FIG. 3 is a block diagram of a second computing unit of the closed-loop control apparatus for a range extender according to the present invention;
FIG. 4 is a control schematic diagram of the range extender of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Example 1
When the control of the range extender is basically open-loop control, particularly when the production consistency of an engine and a generator deviates, which may result in that the energy control of a vehicle is not accurate enough, the performance of the whole vehicle is never affected, the embodiment provides a method for controlling the range extender, wherein the range extender comprises a range extender controller, an engine and a generator, the range extender controller is communicated with the range extender, the engine is mechanically connected with the generator, the range extender controller comprises a generator controller and an engine controller, as shown in fig. 1 and 4, and the method comprises the following steps:
receiving an operation instruction sent by the vehicle control unit, and acquiring target power required by the range extender;
determining a target rotating speed and a target torque according to the target power;
calculating a required rotating speed according to the target power and the actual power of the range extender;
calculating a required torque according to the required rotating speed and the actual rotating speed of the range extender;
and controlling the generator to reach the target rotating speed according to the required torque so as to enable the output power of the range extender to reach the target power.
When the vehicle needs to operate the range extender, the vehicle control unit determines that the vehicle energy demand calculates the target power of the range extender and sends the target power to the range extender controller, and of course, in some embodiments, the range extender controller can also directly calculate the target power.
In this embodiment, the determining the target rotation speed and the target torque according to the target power specifically includes the following steps:
determining the target rotating speed according to the corresponding relation between the target power and the target rotating speed;
calculating a target torque according to the target power and the target rotating speed;
and controlling the engine according to the target torque so that the torque of the engine reaches the target torque.
In this embodiment, the range extender controller transmits the calculated target torque to the engine controller, and the engine controller performs torque control on the engine according to the received target torque.
As a conventional technique, the calculation relationship among power, rotational speed, and torque is as follows:
P＝T×N÷9500
wherein P is power, T is torque, and N is rotational speed.
In this embodiment, the determining the target rotation speed according to the corresponding relationship between the target power and the target rotation speed includes: and obtaining the target rotating speed through table look-up according to a preset target power and target rotating speed corresponding table.
A power rotating speed table is stored in a memory of the range extender controller in advance and used for storing the corresponding relation of rotating speeds among power. When the target rotating speed corresponding to the target power needs to be obtained, the target power can be matched with the power in the power rotating speed table, and the rotating speed corresponding to the power which is the same as the target power is taken as the target rotating speed.
Specifically, the step of calculating the required torque according to the required rotating speed and the actual rotating speed of the range extender comprises the following steps:
acquiring the actual power of the range extender;
calculating a power difference value according to the target power and the actual power;
calculating the regulated power through PID control according to the power difference and the target power;
and calculating the required rotating speed according to the adjusting power and the target torque.
According to the invention, power closed-loop control is realized at one end of the generator, so that the advantage of quick response of the generator can be utilized, and meanwhile, accurate control can be realized.
Meanwhile, the step of controlling the generator to reach the target rotating speed according to the required torque so that the output power of the range extender reaches the target power comprises the following steps:
acquiring the actual rotating speed of the range extender;
calculating a rotation speed difference value according to the required rotation speed and the actual rotation speed;
calculating an adjusting rotating speed through PID control according to the rotating speed difference and the required rotating speed;
and calculating the required torque according to the adjusting rotating speed and the adjusting power.
The present embodiment employs closed-loop control of generator speed, engine torque control, because the torque response of the engine is slow and the torque response of the generator is rapid. The torque of the engine is influenced by factors such as ambient temperature and fuel injection quantity, and the torque of the generator is mainly controlled by current, so that the torque adjusting precision of the engine is higher than that of the engine. Therefore, if the closed-loop control of the rotational speed is performed by the generator, the response is quick.
On the basis of the control method provided by the above embodiment, the present embodiment further provides a range extender closed-loop control device, where the device includes:
the first acquisition module is used for acquiring target power and target rotating speed required by the range extender;
the first calculation module is used for calculating a target torque according to the target power and the target rotating speed;
the first calculating unit is used for calculating the required rotating speed according to the target power and the actual power of the range extender;
a second calculating unit for calculating the required torque according to the required rotating speed and the actual rotating speed of the range extender
And the first control module is used for controlling the generator to reach the target rotating speed according to the required torque.
Further, the apparatus further comprises:
the storage module is used for storing a corresponding relation table of the target power and the target rotating speed;
the second control module controls the engine according to the target torque so that the torque of the engine reaches the target torque;
specifically, as shown in fig. 2, the first calculation unit includes:
the second acquisition module is used for acquiring the actual power of the range extender;
the second calculation module is used for calculating a power difference value according to the target power and the actual power;
the first PID control module calculates the regulated power according to the power difference and the target power;
and the third calculation module is used for calculating the required rotating speed according to the adjusting power and the target torque.
Specifically, as shown in fig. 3, the second calculation unit includes:
the third acquisition module is used for acquiring the actual rotating speed of the range extender;
the fourth calculation module is used for calculating a rotating speed difference value according to the required rotating speed and the actual rotating speed;
the second PID control module is used for calculating the adjusting rotating speed according to the rotating speed difference value and the required rotating speed;
and the fifth calculation module is used for calculating the required torque according to the adjusting rotating speed and the adjusting power.
In addition, the embodiment also provides a range extender, which comprises a range extender controller, an engine and a generator, wherein the range extender controller is communicated with the range extender, the engine is mechanically connected with the generator, and the range extender adopts the closed-loop control method of the range extender.
The embodiment has the following beneficial effects:
1) according to the closed-loop control method, device and equipment for the range extender, the power closed-loop control of the range extender is arranged on one side of the generator, so that the power requirement of a whole vehicle controller can be met all the time, and meanwhile, the accuracy of the energy management of the whole vehicle is improved.
2) According to the closed-loop control method, the closed-loop control device and the closed-loop control equipment for the range extender, the engine is subjected to open-loop torque control, the requirement of the range extender on the production consistency of the engine is low, the engine is controlled simply, and the development difficulty is reduced.
3) According to the closed-loop control method, the closed-loop control device and the closed-loop control equipment for the range extender, the power closed-loop control is correspondingly fast due to the fact that the generator has the millisecond-level response speed, and the power requirement of a vehicle can be met rapidly.
While the invention has been described with reference to specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the invention can be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A closed-loop control method for a range extender, the range extender comprising an engine and a generator, the engine being mechanically coupled to the generator, the method comprising the steps of:
receiving an operation instruction sent by the vehicle control unit, and acquiring target power required by the range extender;
determining a target rotating speed and a target torque according to the target power;
calculating a required rotating speed according to the target power and the actual power of the range extender, specifically, acquiring the actual power of the range extender; calculating a power difference value according to the target power and the actual power; calculating the regulated power through PID control according to the power difference and the target power; calculating a required rotating speed according to the adjusting power and the target torque;
calculating a required torque according to the required rotating speed and the actual rotating speed of the range extender; the calculating the required torque according to the required rotating speed and the actual rotating speed of the range extender comprises the following steps: acquiring the actual rotating speed of the range extender; calculating a rotation speed difference value according to the required rotation speed and the actual rotation speed; calculating an adjusting rotating speed through PID control according to the rotating speed difference and the required rotating speed; calculating a required torque according to the adjusting rotating speed and the adjusting power;
and controlling the generator to reach the target rotating speed according to the required torque so as to enable the output power of the range extender to reach the target power.
2. The closed-loop control method of the range extender according to claim 1, wherein the receiving of the operation command sent by the vehicle control unit and the obtaining of the target power required by the range extender comprise;
the vehicle control unit calculates the target power of the range extender according to the vehicle energy requirement, and sends the target power to the range extender controller.
3. The closed-loop control method of the range extender of claim 1, wherein said determining a target speed and a target torque based on said target power comprises the steps of:
determining the target rotating speed according to the corresponding relation between the target power and the target rotating speed;
calculating a target torque according to the target power and the target rotating speed;
and controlling the engine according to the target torque so that the torque of the engine reaches the target torque.
4. The closed-loop control method of the range extender according to claim 3, wherein the determining the target rotating speed according to the corresponding relation between the target power and the target rotating speed comprises:
and obtaining the target rotating speed through table look-up according to a preset target power and target rotating speed corresponding table.
5. A range extender closed-loop control device, comprising:
the first acquisition module is used for acquiring target power and target rotating speed required by the range extender;
the first calculation module is used for calculating a target torque according to the target power and the target rotating speed;
the first calculating unit is used for calculating the required rotating speed according to the target power and the actual power of the range extender; the first calculation unit includes: the second acquisition module is used for acquiring the actual power of the range extender; the second calculation module is used for calculating a power difference value according to the target power and the actual power; the first PID control module calculates the regulated power according to the power difference and the target power; the third calculation module is used for calculating the required rotating speed according to the adjusting power and the target torque;
the second calculating unit is used for calculating the required torque according to the required rotating speed and the actual rotating speed of the range extender; the second calculation unit includes: the third acquisition module is used for acquiring the actual rotating speed of the range extender; the fourth calculation module is used for calculating a rotating speed difference value according to the required rotating speed and the actual rotating speed; the second PID control module is used for calculating the adjusting rotating speed according to the rotating speed difference value and the required rotating speed; the fifth calculation module is used for calculating the required torque according to the adjusting rotating speed and the adjusting power;
and the first control module is used for controlling the generator to reach the target rotating speed according to the required torque.
6. The closed-loop control device of a range extender of claim 5, further comprising:
the storage module is used for storing a corresponding relation table of the target power and the target rotating speed;
and the second control module controls the engine according to the target torque so that the torque of the engine reaches the target torque.
7. A range extender comprising a range extender controller, an engine and a generator, said range extender controller communicating with said range extender and said engine being mechanically connected to said generator, wherein said range extender employs a range extender closed loop control method of any of claims 1 to 4.
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| CN201910577736.8A CN110281906B (en) | 2019-06-28 | 2019-06-28 | Range extender closed-loop control method, device and equipment |
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| CN201910577736.8A CN110281906B (en) | 2019-06-28 | 2019-06-28 | Range extender closed-loop control method, device and equipment |
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| CN110281906B true CN110281906B (en) | 2021-04-13 |
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| CN112356819B (en) * | 2019-10-23 | 2022-05-27 | 万向集团公司 | Range extender power following control method for new energy automobile |
| CN110696811B (en) * | 2019-10-29 | 2021-04-02 | 一汽解放青岛汽车有限公司 | Vehicle control method and device, vehicle and storage medium |
| CN110901415B (en) * | 2019-12-18 | 2021-08-03 | 东风汽车有限公司 | Range extender starting control method and system |
| CN111634278B (en) * | 2020-06-02 | 2022-02-22 | 上海元城汽车技术有限公司 | Control method, device and equipment of range extender |
| CN111660835A (en) * | 2020-06-22 | 2020-09-15 | 安徽江淮汽车集团股份有限公司 | Control method, equipment, storage medium and device for range extender of electric vehicle |
| CN111963414B (en) * | 2020-07-02 | 2022-04-19 | 惠州市德赛西威汽车电子股份有限公司 | Method and system for accurately calculating requested power and limited power of compressor |
| 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 |
| CN112172784B (en) * | 2020-09-01 | 2022-03-29 | 宁波洁程汽车科技有限公司 | Control method and device for full-power fast and stable switching of range extender |
| CN112193234B (en) * | 2020-09-18 | 2022-03-15 | 联合汽车电子有限公司 | Range extender control method, control system and storage medium |
| CN117207946B (en) * | 2023-09-26 | 2024-05-31 | 重庆赛力斯新能源汽车设计院有限公司 | Range extender control method and device, vehicle and readable storage medium |
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| US8408341B2 (en) * | 2007-07-12 | 2013-04-02 | Odyne Systems, Llc | Hybrid vehicle drive system and method and idle reduction system and method |
| CN103359115B (en) * | 2012-03-27 | 2016-03-02 | 重庆长安汽车股份有限公司 | A kind of extended-range electric vehicle and entire car controller thereof and electricity-generating control method and system |
| WO2018038062A1 (en) * | 2016-08-23 | 2018-03-01 | 株式会社デンソー | Stop control system |
| CN108501934A (en) * | 2018-03-30 | 2018-09-07 | 重庆长安汽车股份有限公司 | A kind of control method of new-energy automobile dynamical system |
| CN108674407A (en) * | 2018-05-22 | 2018-10-19 | 浙江吉利控股集团有限公司 | A kind of the power method for handover control and system of automobile |
| CN109910868B (en) * | 2019-04-24 | 2021-08-24 | 重庆长安新能源汽车科技有限公司 | Energy management method and device for series mode of hybrid vehicle |
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