CN112590764A - Engine control method and device for hybrid vehicle and hybrid vehicle - Google Patents
Engine control method and device for hybrid vehicle and hybrid vehicle Download PDFInfo
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- CN112590764A CN112590764A CN202011520280.0A CN202011520280A CN112590764A CN 112590764 A CN112590764 A CN 112590764A CN 202011520280 A CN202011520280 A CN 202011520280A CN 112590764 A CN112590764 A CN 112590764A
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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
- B60W20/15—Control strategies specially adapted for achieving a particular effect
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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
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Abstract
The application discloses engine control method and device of a hybrid vehicle and the hybrid vehicle, wherein the method comprises the following steps: acquiring the charge state and the charge and discharge power of the power battery; judging whether the peak power of the power battery obtained based on the charge state and the charge-discharge power is less than or equal to the starting power of the engine; and when the engine starting power is less than or equal to the engine starting power, starting the engine, identifying the target working condition of the hybrid vehicle according to the current maximum power of the range extender of the hybrid vehicle, and calculating the working rotating speed of the engine, the rotating speed demand of the range extender and the torque demand. Therefore, the problems that the engine of the existing extended range vehicle is frequently started and stopped, the running speed is high after the engine is started and the like are solved.
Description
Technical Field
The present disclosure relates to vehicle technologies, and in particular, to an engine control method and device for a hybrid vehicle and a hybrid vehicle.
Background
The range-extended vehicle, also referred to as a hybrid vehicle, mainly includes an electric drive system and a range extender, wherein the range extender includes an engine and a generator. In the normal running process of the vehicle, the electric drive system is used for driving the whole vehicle, and the range extender is used for supplying power to the electric drive system under the condition of insufficient electric quantity.
However, when the output power of the electric drive system cannot meet the actual required power, the output power often needs to be increased through intervention of the range extender, frequent starting and stopping of the engine are easily caused in the intervention process of the range extender, and the rotating speed of the engine is high after starting, so that the driving experience of the range-extended vehicle is greatly reduced.
Content of application
The application provides an engine control method and device of a hybrid vehicle and the hybrid vehicle, which are used for solving the problems that an engine of the conventional extended range vehicle is frequently started and stopped, the running speed is high after the engine is started and the like.
An embodiment of a first aspect of the present application provides an engine control method for a hybrid vehicle, including the steps of: acquiring the charge state and the charge and discharge power of the power battery; judging whether the peak power of the power battery obtained based on the charge state and the charge-discharge power is less than or equal to the engine starting power; and when the engine starting power is less than or equal to the engine starting power, starting the engine, identifying a target working condition of the hybrid vehicle according to the current maximum power of a range extender of the hybrid vehicle, and calculating the working rotating speed of the engine and the rotating speed demand and the torque demand of the range extender.
Further, the engine starting power is obtained by summing the total vehicle required power, the starting reserve power of the engine and a preset power value.
Further, the identifying the target operating condition of the hybrid vehicle comprises: comparing the whole vehicle required power of the hybrid vehicle with the current maximum power of the range extender: when the vehicle required power is greater than the current maximum power, the target working condition is a vehicle hybrid traction working condition; when the required power of the whole vehicle is smaller than or equal to the current maximum power and the charge state is smaller than or equal to a preset charge state, the target working condition is a single range extender traction and power supply charging working condition; and when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is greater than the preset charge state, the target working condition is a single range extender traction working condition.
Further, the calculating the operating speed of the engine and the range extender speed and torque requirements includes: acquiring an external characteristic and a universal characteristic curve of the engine to calculate an optimal economic area of the engine according to the curve, wherein the optimal economic area comprises a plurality of rotating speed values, and the rotating speed values correspond to a power generation power interval of a range extender; and calculating the target generating power of the range extender under the target working condition, and obtaining the working rotating speed of the engine according to the generating power interval where the target generating power is located.
Further, the calculating the operating speed of the engine and the speed and torque requirements of the range extender further comprises: taking the working rotating speed of the engine as a rotating speed instruction to a generator; and calculating the target torque of the engine according to the target power generation power and the working rotating speed of the engine, and sending the target torque to the engine as a torque instruction.
An embodiment of a second aspect of the present application provides an engine control apparatus for a hybrid vehicle, including: the acquisition module is used for acquiring the charge state and the charge and discharge power of the power battery; the judging module is used for judging whether the peak power of the power battery obtained based on the charge state and the charge and discharge power is smaller than or equal to the engine starting power; the control module is used for starting the engine when the starting power of the engine is smaller than or equal to the starting power of the engine, identifying the target working condition of the hybrid vehicle according to the current maximum power of a range extender of the hybrid vehicle, and calculating the working rotating speed of the engine and the rotating speed demand and the torque demand of the range extender.
Further, the engine starting power is obtained by summing the total vehicle required power, the starting reserve power of the engine and a preset power value.
Further, the control module includes: the comparison unit is used for comparing the whole vehicle required power of the hybrid vehicle with the current maximum power of the range extender: the first identification unit is used for identifying the target working condition as a whole hybrid traction working condition when the whole vehicle required power is greater than the current maximum power; the second identification unit is used for identifying the target working condition as a single range extender traction and power supply charging working condition when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is less than or equal to a preset charge state; and the third identification unit is used for identifying the target working condition as a single range extender traction working condition when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is greater than the preset charge state.
Further, the control module includes: the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring an external characteristic curve and a universal characteristic curve of the engine so as to calculate an optimal economic area of the engine according to the curve, the optimal economic area comprises a plurality of rotating speed values, and the rotating speed values correspond to a power generation power interval of a range extender; the calculation unit is used for calculating the target power generation power of the range extender under the target working condition and obtaining the working rotating speed of the engine according to the power generation power interval where the target power generation power is located; a first transmitting unit for instructing a generator with an operating rotational speed of the engine as a rotational speed; and the second sending unit is used for calculating the target torque of the engine according to the target power generation power and the working rotating speed of the engine and sending the target torque to the engine as a torque instruction.
An embodiment of a third aspect of the present application provides a hybrid vehicle including the engine control device of the hybrid vehicle according to the above embodiment.
The engine is controlled to start and stop by combining the electric quantity of the power battery and the charge-discharge power, the working rotating speed of the engine and the rotating speed requirement and the torque requirement of the range extender are calculated according to the target working condition of the hybrid vehicle, the engine works in a reasonable rotating speed interval by adopting a strategy of fixing the rotating speed and changing the torque, so that the problems of frequent starting and stopping of the range-extended automobile engine and high running rotating speed of the engine after starting are effectively solved, and the driving comfort is improved. Therefore, the problems that the engine of the existing extended range vehicle is frequently started and stopped, the running speed is high after the engine is started and the like are solved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart illustrating a flow chart of an engine control method for a hybrid vehicle according to an embodiment of the present application;
FIG. 2 is a flow chart illustrating a flow chart of an engine control method of a hybrid vehicle according to one embodiment of the present application;
fig. 3 is an exemplary diagram of an engine control apparatus of a hybrid vehicle according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
An engine control method and apparatus for a hybrid vehicle and a hybrid vehicle according to an embodiment of the present application are described below with reference to the drawings. In order to solve the problems that the engine of the front range-extended vehicle is frequently started and stopped and the running speed is high after the engine is started, the application provides an engine control method of a hybrid vehicle. Therefore, the problems that the engine of the front range-extending vehicle is frequently started and stopped, the running rotating speed is high after the engine is started are solved.
Specifically, fig. 1 is a flowchart illustrating an engine control method of a hybrid vehicle according to an embodiment of the present disclosure.
As shown in fig. 1, the engine control method of the hybrid vehicle includes the steps of:
in step S101, the state of charge and the charge/discharge power of the power battery are acquired.
The main body of execution of the engine control method for the hybrid vehicle may be the hybrid vehicle. The engine control method of the hybrid vehicle according to the embodiment of the present application may be executed by the engine control device of the hybrid vehicle according to the embodiment of the present application, and the engine control device of the hybrid vehicle according to the embodiment of the present application may be arranged in any hybrid vehicle to execute the engine control method of the hybrid vehicle of the vehicle according to the embodiment of the present application.
Wherein the state of charge of the battery is used to represent the battery charge.
In step S102, it is determined whether the peak power of the power battery obtained based on the state of charge and the charge-discharge power is less than or equal to the engine starting power.
In the present embodiment, the engine starting power is obtained from the sum of the total vehicle required power, the starting reserve power of the engine, and a preset power value. The preset power value is power required by the vehicle except for the total power required by the vehicle and the engine starting reserve power, and may be set according to actual conditions, which is not specifically limited herein.
Specifically, the method comprises the following steps: (1) establishing an MAP table of an accelerator pedal, a vehicle speed and a torque required by a driver;
(2) obtaining the torque requested by the driver according to the torque MAP table, and obtaining the torque which can be output by the current driving motor by combining the current maximum allowable torque of the driving motor and the current maximum allowable torque of the driving motor;
(3) calculating the allowable power of the driving motor, wherein the formula is as follows:
the allowable power of the driving motor is the available torque of the driving motor and the actual rotating speed of the driving motor/9550;
(4) and calculating the total required power of the vehicle, wherein the formula is as follows:
the total required power of the whole vehicle is equal to the current motor allowable power + AC required power + low-voltage accessory power;
(5) and judging whether the peak power of the power battery is less than or equal to the starting power of the engine, namely judging whether the peak power of the power battery is less than or equal to (total vehicle required power + engine starting reserve power + delta) and the delta is a preset power value so as to judge whether the engine is started.
In step S103, when the engine starting power is less than or equal to the engine starting power, the engine is started, and the target operating condition of the hybrid vehicle is identified according to the current maximum power of the range extender of the hybrid vehicle, and the operating speed of the engine and the speed demand and the torque demand of the range extender are calculated.
The working rotating speed is a fixed rotating speed, and the torque demand changes along with the power demand. It can be understood that, the engine is controlled to start and stop by combining the electric quantity of the power battery and the charge and discharge power, and meanwhile, the engine works in a reasonable rotating speed interval by adopting the strategies of fixing the rotating speed and changing the torque, so that the processing process is simpler, and better driving comfort can be obtained without adding additional auxiliary equipment.
In this embodiment, when it is determined that the engine is started, it is necessary to further identify a target operating condition of the hybrid vehicle, including: comparing the whole vehicle required power of the hybrid vehicle with the current maximum power of the range extender: when the required power of the whole vehicle is larger than the current maximum power, the target working condition is a whole mixed traction working condition; when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is less than or equal to the preset charge state, the target working condition is a single range extender traction and power supply charging working condition; and when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is greater than the preset charge state, the target working condition is a single range extender traction working condition.
The whole hybrid traction working condition is a working condition that the whole vehicle is driven by the range extender and the power battery together; the single range extender traction and power supply charging working condition is that the whole vehicle adopts a single range extender traction and power supply charging mode, and the range extender is started to charge the power battery while meeting the driving power requirement of the whole vehicle; the traction working condition of the single range extender is that the whole vehicle adopts a single range extender traction mode, and the range extender is started to meet the driving power requirement of the whole vehicle.
The engine works in a reasonable rotating speed interval by adopting a strategy of fixing the rotating speed and changing the torque, so that the problems of frequent starting and stopping of the extended range type automobile engine and high running rotating speed of the engine after starting are effectively inhibited, and better driving comfort is obtained. The calculation of the engine operating speed and the range extender speed and torque requirements will be described in detail below.
In this embodiment, calculating the operating speed of the engine and the speed and torque requirements of the range extender comprises: acquiring an external characteristic and a universal characteristic curve of the engine to calculate an optimal economic area of the engine according to the curve, wherein the optimal economic area comprises a plurality of rotating speed values, and the rotating speed values correspond to a power generation power interval of the range extender; and calculating the target generating power of the range extender under the target working condition, and obtaining the working rotating speed of the engine according to the generating power interval where the target generating power is located.
The rotating speed value corresponds to the power generation power interval of the range extender one by one.
Specifically, the calculation process of the engine operating speed is as follows:
(1) the control of the range extender adopts a power following control method, the optimal economic area of the engine is calculated according to the external characteristics and universal characteristic curve of the engine, n points are selected in the optimal economic area, and the selected n points are used as the fixed rotating speed value of the engine in the working interval table of the engine: N1-Nn; and dividing a plurality of range extender power generation intervals according to the working fixed rotating speed value of the engine, wherein the range extender power generation intervals correspond to the working fixed rotating speed value of the engine one to one.
(2) Comparing the target generating power of the range extender with the generating power interval of the range extender in real time, and determining the generating power interval to which the target generating power of the range extender belongs and the corresponding working rotating speed value of the engine; adjusting the output of the range extender in real time according to the target power generation power of the range extender, so that the range extender works in a state of constant rotating speed and variable torque: taking the engine speed of the range extender as the target power P of the range extendertargetThe corresponding engine working fixed rotating speed value, the engine working torque of the range extender is according to the target generating power P of the range extendertargetAnd (6) linear adjustment.
(3) The range extender power generation interval comprises a first range extender target power generation interval P11～P12And a target generating power interval P of the second range extender21～P22......Target generating power interval P of nth range extendern1～Pn2. Under the working fixed rotating speed of the engine, acquiring the corresponding minimum torque and maximum torque with economy through the external characteristic curve and the universal characteristic curve;
(4) during initial calculation, if the target generated power P of the range extender is calculatedtargetAt the overlapping part of adjacent intervals, the target generated power P of the range extender istargetTo be drawn into a smaller interval.
In this embodiment, calculating the operating speed of the engine and the speed and torque requirements of the range extender further comprises: taking the working rotating speed of the engine as a rotating speed instruction to the generator; and calculating a target torque of the engine according to the target power generation power and the working rotating speed of the engine, and sending the target torque to the engine as a torque instruction.
It can be appreciated that after calculating the operating speed of the engine, embodiments of the present application further calculate the range extender speed demand and torque demand, including: (1) calculated engine operating SpeedtargetThe speed command is sent to the generator as a speed command according to a formula P-T x n/9550; according to the target generating power P of the range extendertargetAnd engine operating SpeedtargetCalculating to obtain a target torque of the engine, and sending the value to the engine as a torque instruction;
the engine control method for a hybrid vehicle will be further explained by an embodiment, as shown in fig. 2, comprising the steps of:
1. obtaining a driver request torque according to a torque MAP table, comparing the magnitude of the torque values of the request torque and the maximum allowable torque by combining the current maximum allowable torque of a driving motor, and taking the request torque as an output torque when the torque value is smaller than the torque value of the request torque; when the torque value of the maximum allowable torque is small, taking the maximum allowable torque as an output torque; so that the torque which can be output by the current driving motor can be obtained;
2. calculating the allowable power of the driving motor, wherein the formula is as follows:
the allowable power of the driving motor is the available torque of the driving motor and the actual rotating speed of the driving motor/9550;
3. and calculating the total required power of the vehicle, wherein the formula is as follows:
the required Power of the whole Vehicle, namely, the current allowable Power of the motor, the AC required Power and the low-voltage accessory Power;
4. determining whether the engine is started:
when the peak power of the power battery is less than or equal to (the total power demand of the vehicle + the starting reserve power of the engine + delta), the engine is started;
5. after the engine is started, acquiring the current maximum Power Pe/g of the range extender, and comparing the Vehicle required Power Vehicle _ Power with the current maximum Power Pe/g of the range extender:
the Vehicle-Power hybrid traction mode is adopted for the whole Vehicle, and the range extender and the Power battery jointly drive the whole Vehicle;
and Vehicle _ Power is less than or equal to Pe/g, judging the state of charge (SOC) of the Power battery:
SOC<SOClowthe whole vehicle adopts a single range extender traction + power supply charging mode, the range extender is started to meet the driving power requirement of the whole vehicle, and meanwhile, a power battery is charged;
SOC>SOClowthe whole vehicle adopts a single range extender traction mode, and the range extender is started to meet the driving power requirement of the whole vehicle;
6. and calculating the working rotating speed of the engine, the rotating speed demand of the range extender and the torque demand.
According to the engine control method of the hybrid vehicle, the engine is controlled to start and stop by combining the electric quantity of the power battery and the charge-discharge power, the working rotating speed of the engine, the rotating speed demand of the range extender and the torque demand are calculated according to the target working condition of the hybrid vehicle, the engine is enabled to work in a reasonable rotating speed interval by adopting a constant rotating speed and variable torque strategy, the problems that the range-extended automobile engine is frequently started and stopped and the running rotating speed of the engine is high after starting are effectively solved, and the driving comfort is improved.
Next, an engine control device of a hybrid vehicle according to an embodiment of the present application will be described with reference to the drawings.
Fig. 3 is a block diagram schematically illustrating an engine control device of a hybrid vehicle according to an embodiment of the present application.
As shown in fig. 3, the engine control device 10 of the hybrid vehicle includes: an acquisition module 100, a judgment module 200 and a control module 300.
The obtaining module 100 is configured to obtain a charge state and charge-discharge power of the power battery; the judging module 200 is used for judging whether the peak power of the power battery obtained based on the charge state and the charge-discharge power is less than or equal to the engine starting power; the control module 300 is configured to start the engine when less than or equal to the engine starting power, and to identify a target operating condition of the hybrid vehicle based on a current maximum power of a range extender of the hybrid vehicle, and to calculate an operating speed of the engine and a range extender speed and torque demand.
Further, the engine starting power is obtained by summing the total vehicle power demand, the starting reserve power of the engine, and a preset power value.
Further, the control module 300 includes: the device comprises a comparison unit, a first identification unit, a second identification unit and a third identification unit.
The comparison unit is used for comparing the whole vehicle required power of the hybrid vehicle with the current maximum power of the range extender: the first identification unit is used for identifying the target working condition as a whole hybrid traction working condition when the required power of the whole vehicle is greater than the current maximum power; the second identification unit is used for identifying the target working condition as the traction working condition of the single range extender and the power supply charging working condition when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is less than or equal to the preset charge state; and the third identification unit is used for identifying the target working condition as the traction working condition of the single range extender when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is greater than the preset charge state.
Further, the control module 300 further includes: the device comprises an acquisition unit, a first sending unit and a second sending unit.
The system comprises an acquisition unit, a control unit and a range extender, wherein the acquisition unit is used for acquiring external characteristics and universal characteristic curves of an engine so as to calculate the optimal economic area of the engine according to the curves, the optimal economic area comprises a plurality of rotating speed values, and the rotating speed values correspond to the power generation power interval of the range extender; the calculating unit is used for calculating the target generating power of the range extender under the target working condition and obtaining the working rotating speed of the engine according to the generating power interval where the target generating power is located; the first sending unit is used for sending the working rotating speed of the engine to the generator as a rotating speed instruction; and a second transmitting unit for calculating a target torque of the engine according to the target generated power and the operating speed of the engine and transmitting the target torque as a torque command to the engine.
The above explanation of the embodiment of the engine control method for a hybrid vehicle is also applicable to the engine control device for a hybrid vehicle of this embodiment, and will not be described again here.
According to the engine control device of the hybrid vehicle, the engine is controlled to start and stop by combining the electric quantity of the power battery and the charge and discharge power, the working rotating speed of the engine and the rotating speed demand and the torque demand of the range extender are calculated according to the target working condition of the hybrid vehicle, the engine is enabled to work in a reasonable rotating speed interval by adopting a strategy of fixing the rotating speed and changing the torque, the problems that the range extender automobile engine is frequently started and stopped and the running rotating speed of the engine is high after starting are effectively restrained, and the driving comfort is improved.
The present embodiment also provides a hybrid vehicle including the engine control apparatus of the hybrid vehicle of the above embodiment. According to the hybrid vehicle provided by the embodiment of the application, the engine is controlled to start and stop by combining the electric quantity of the power battery and the charge-discharge power, the working rotating speed of the engine and the rotating speed demand and the torque demand of the range extender are calculated according to the target working condition of the hybrid vehicle, the engine is enabled to work in a reasonable rotating speed interval by adopting a strategy of constant rotating speed and variable torque, the problems that the range extender automobile engine is frequently started and stopped and the running rotating speed of the engine is high after starting are effectively solved, and the driving comfort is improved.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more N executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of implementing the embodiments of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or N wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. An engine control method of a hybrid vehicle, characterized by comprising the steps of:
acquiring the charge state and the charge and discharge power of the power battery;
judging whether the peak power of the power battery obtained based on the charge state and the charge-discharge power is less than or equal to the engine starting power;
and when the engine starting power is less than or equal to the engine starting power, starting the engine, identifying a target working condition of the hybrid vehicle according to the current maximum power of a range extender of the hybrid vehicle, and calculating the working rotating speed of the engine and the rotating speed demand and the torque demand of the range extender.
2. The method according to claim 1, wherein the engine starting power is obtained from a sum of a total vehicle power demand, a starting reserve power of the engine, and a preset power value.
3. The method of claim 1, wherein the identifying a target operating condition of the hybrid vehicle comprises:
comparing the whole vehicle required power of the hybrid vehicle with the current maximum power of the range extender:
when the vehicle required power is greater than the current maximum power, the target working condition is a vehicle hybrid traction working condition;
when the required power of the whole vehicle is smaller than or equal to the current maximum power and the charge state is smaller than or equal to a preset charge state, the target working condition is a single range extender traction and power supply charging working condition;
and when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is greater than the preset charge state, the target working condition is a single range extender traction working condition.
4. The method of claim 1, wherein said calculating an operating speed of said engine and said range extender speed and torque requests comprises:
acquiring an external characteristic and a universal characteristic curve of the engine to calculate an optimal economic area of the engine according to the curve, wherein the optimal economic area comprises a plurality of rotating speed values, and the rotating speed values correspond to a power generation power interval of a range extender;
and calculating the target generating power of the range extender under the target working condition, and obtaining the working rotating speed of the engine according to the generating power interval where the target generating power is located.
5. The method of claim 4, wherein said calculating an operating speed of said engine and said range extender speed and torque requests further comprises:
taking the working rotating speed of the engine as a rotating speed instruction to a generator;
and calculating the target torque of the engine according to the target power generation power and the working rotating speed of the engine, and sending the target torque to the engine as a torque instruction.
6. An engine control device for a hybrid vehicle, characterized by comprising:
the acquisition module is used for acquiring the charge state and the charge and discharge power of the power battery;
the judging module is used for judging whether the peak power of the power battery obtained based on the charge state and the charge and discharge power is smaller than or equal to the engine starting power;
the control module is used for starting the engine when the starting power of the engine is smaller than or equal to the starting power of the engine, identifying the target working condition of the hybrid vehicle according to the current maximum power of a range extender of the hybrid vehicle, and calculating the working rotating speed of the engine and the rotating speed demand and the torque demand of the range extender.
7. The apparatus of claim 6, wherein the engine starting power is obtained from a sum of a total vehicle required power, a starting reserve power of the engine, and a preset power value.
8. The apparatus of claim 6, wherein the control module comprises:
the comparison unit is used for comparing the whole vehicle required power of the hybrid vehicle with the current maximum power of the range extender:
the first identification unit is used for identifying the target working condition as a whole hybrid traction working condition when the whole vehicle required power is greater than the current maximum power;
the second identification unit is used for identifying the target working condition as a single range extender traction and power supply charging working condition when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is less than or equal to a preset charge state;
and the third identification unit is used for identifying the target working condition as a single range extender traction working condition when the required power of the whole vehicle is less than or equal to the current maximum power and the charge state is greater than the preset charge state.
9. The apparatus of claim 6, wherein the control module comprises:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring an external characteristic curve and a universal characteristic curve of the engine so as to calculate an optimal economic area of the engine according to the curve, the optimal economic area comprises a plurality of rotating speed values, and the rotating speed values correspond to a power generation power interval of a range extender;
the calculation unit is used for calculating the target power generation power of the range extender under the target working condition and obtaining the working rotating speed of the engine according to the power generation power interval where the target power generation power is located;
a first transmitting unit for instructing a generator with an operating rotational speed of the engine as a rotational speed;
and the second sending unit is used for calculating the target torque of the engine according to the target power generation power and the working rotating speed of the engine and sending the target torque to the engine as a torque instruction.
10. A hybrid vehicle characterized by comprising the engine control apparatus of the hybrid vehicle according to any one of claims 6 to 9.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954662A (en) * | 2021-10-27 | 2022-01-21 | 重庆金康赛力斯新能源汽车设计院有限公司 | Vehicle range extender control method and device and vehicle range extender control equipment |
| CN114701399A (en) * | 2022-03-25 | 2022-07-05 | 东风越野车有限公司 | Energy management control method of extended range type automobile |
| CN115716470A (en) * | 2022-11-28 | 2023-02-28 | 成都赛力斯科技有限公司 | Range extender control method and system based on vehicle speed |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973268A (en) * | 2010-10-29 | 2011-02-16 | 重庆长安汽车股份有限公司 | Energy coupling control method of plug-in electric vehicle in series |
| CN101979265A (en) * | 2010-10-18 | 2011-02-23 | 重庆长安汽车股份有限公司 | Method for controlling stroke lengthening of serially connected pluggable electric vehicle |
| CN102381309A (en) * | 2011-10-18 | 2012-03-21 | 奇瑞汽车股份有限公司 | Speed regulation and management method for range extender of electric car |
| JP2014231291A (en) * | 2013-05-29 | 2014-12-11 | 日産自動車株式会社 | Plug-in hybrid vehicle controller |
| CN106467037A (en) * | 2015-08-18 | 2017-03-01 | 北汽福田汽车股份有限公司 | The power distribution method of extended-range electric vehicle auxiliary power unit, device and automobile |
| CN110040004A (en) * | 2019-04-01 | 2019-07-23 | 一汽-大众汽车有限公司 | A kind of the power follow-up control method and system of range-extended electric automobile |
-
2020
- 2020-12-21 CN CN202011520280.0A patent/CN112590764A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979265A (en) * | 2010-10-18 | 2011-02-23 | 重庆长安汽车股份有限公司 | Method for controlling stroke lengthening of serially connected pluggable electric vehicle |
| CN101973268A (en) * | 2010-10-29 | 2011-02-16 | 重庆长安汽车股份有限公司 | Energy coupling control method of plug-in electric vehicle in series |
| CN102381309A (en) * | 2011-10-18 | 2012-03-21 | 奇瑞汽车股份有限公司 | Speed regulation and management method for range extender of electric car |
| JP2014231291A (en) * | 2013-05-29 | 2014-12-11 | 日産自動車株式会社 | Plug-in hybrid vehicle controller |
| CN106467037A (en) * | 2015-08-18 | 2017-03-01 | 北汽福田汽车股份有限公司 | The power distribution method of extended-range electric vehicle auxiliary power unit, device and automobile |
| CN110040004A (en) * | 2019-04-01 | 2019-07-23 | 一汽-大众汽车有限公司 | A kind of the power follow-up control method and system of range-extended electric automobile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954662A (en) * | 2021-10-27 | 2022-01-21 | 重庆金康赛力斯新能源汽车设计院有限公司 | Vehicle range extender control method and device and vehicle range extender control equipment |
| CN113954662B (en) * | 2021-10-27 | 2023-11-03 | 重庆金康赛力斯新能源汽车设计院有限公司 | Vehicle range extender control method and device and vehicle range extender control equipment |
| CN114701399A (en) * | 2022-03-25 | 2022-07-05 | 东风越野车有限公司 | Energy management control method of extended range type automobile |
| CN115716470A (en) * | 2022-11-28 | 2023-02-28 | 成都赛力斯科技有限公司 | Range extender control method and system based on vehicle speed |
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