CN115782608A - Extended range electric vehicle control method and device, extended range electric vehicle and storage medium - Google Patents

Abstract

The invention discloses a method and a device for controlling an extended range electric vehicle, the extended range electric vehicle and a storage medium. The extended range electric vehicle control method comprises the following steps: when the range-extended electric vehicle is in a range-extended working mode, the range-extended controller acquires an engine rotating speed signal from the engine controller and determines the external characteristic torque of the engine according to the engine rotating speed information; the range extending controller acquires the available torque of the motor from the motor controller and determines a target limit torque according to the external characteristic torque of the engine and the available torque of the motor; and acquiring the current motor generating torque through the range-extending controller, and determining the motor output torque according to the target limit torque and the current motor generating torque so as to control the motor of the range-extending electric vehicle through the motor output torque. The invention can effectively prevent the reverse rotation of the engine, protect the engine from being damaged, and is safe and reliable.

Description

Extended range electric vehicle control method and device, extended range electric vehicle and storage medium

Technical Field

The invention relates to the technical field of extended range electric vehicle control, in particular to a method and a device for controlling an extended range electric vehicle, the extended range electric vehicle and a storage medium.

Background

Along with the trend of new forms of energy development, pure electric vehicles market share is higher and higher, pure electric products have economic nature height, the pollutant is little, advantages such as simple structure, but the mileage problem of endurance can't be solved temporarily, especially engineering machine power consumption power is big, and can compensate not enoughly through increasing form power structure, the electric motor car that possesses the form power structure works when increasing the form mode, then it is big to increase form electric motor car low-speed moment of torsion, high-speed operation is steady, brake energy recovery efficiency is high, and simple structure easy maintenance, therefore, the clothes hanger is strong in practicability. However, when the engine is abnormally stopped due to a failure, a misfire, or a fuel exhaustion, the engine may be dragged by the motor to rotate in reverse even to a high rotation speed, and the reverse rotation may cause a problem such as a cylinder scuffing or a supercharger damage.

Disclosure of Invention

The invention provides a control method and device for an extended range electric vehicle, the extended range electric vehicle and a storage medium, and aims to solve the problem that the engine is likely to rotate reversely after the engine is abnormally stopped, so that the hardware of the engine is damaged.

According to an aspect of the present invention, there is provided an extended range electric vehicle control method, including:

when the range-extended electric vehicle is in the range-extended working mode, the range-extended controller acquires an engine rotating speed signal from the engine controller and determines the external characteristic torque of the engine according to the engine rotating speed information;

the range extending controller acquires the available torque of the motor from the motor controller and determines a target limit torque according to the external characteristic torque of the engine and the available torque of the motor;

and acquiring the current motor generating torque through the range-extending controller, and determining the motor output torque according to the target limit torque and the current motor generating torque so as to control the motor of the range-extending electric vehicle through the motor output torque.

Optionally, the determining the engine external characteristic torque according to the engine speed information includes:

and checking an engine external characteristic curve table according to the engine rotating speed information to determine the engine external characteristic torque.

Optionally, the determining a target limit torque according to the engine external characteristic torque and the motor available torque includes:

the smaller one of the engine-out characteristic torque and the motor available torque is set as a target limit torque.

Optionally, after obtaining the current power generation torque of the motor through the range-extending controller, the method further includes:

and determining the absolute value and the operation sign of the current motor generating torque based on the current motor generating torque.

Optionally, determining the output torque of the motor according to the target limit torque and the current generation torque of the motor includes:

taking the smaller one of the target limit torque and the absolute value of the current motor generation torque as a sample motor torque;

and multiplying the sample motor torque by the operation sign to obtain the motor output torque.

According to another aspect of the present invention, there is provided an extended range electric vehicle control apparatus including:

the engine external characteristic torque determining module is used for acquiring an engine rotating speed signal from the engine controller by the range extending controller when the range extending electric vehicle is in a range extending working mode, and determining the engine external characteristic torque according to the engine rotating speed information;

the target limited torque determination module is used for executing the range extending controller to acquire the available torque of the motor from the motor controller and determining the target limited torque according to the external characteristic torque of the engine and the available torque of the motor;

and the motor control module is used for acquiring the current motor generating torque through the range extending controller, determining the motor output torque according to the target limiting torque and the current motor generating torque, and controlling the motor of the range extending type electric vehicle through the motor output torque.

According to another aspect of the present invention, there is provided an extended range electric vehicle including an extended range control system, the extended range control system including: the engine is in spline fit hardware connection with the motor, the engine is electrically connected with the engine controller, the motor controller is electrically connected with the motor, the range-extending controller is respectively in communication connection with the engine controller and the motor controller, and the motor controller is electrically connected with the electric cabinet; the extended range electric vehicle further comprises:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein, the first and the second end of the pipe are connected with each other,

the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the extended range electric vehicle control method of any of the embodiments of the present invention.

According to another aspect of the present invention, there is provided an extended range electric vehicle, including an extended range control system and a vehicle control unit, the extended range control system including: the vehicle control unit comprises a range extending controller, the engine is in spline fit hardware connection with the motor, the engine is electrically connected with the engine controller, the motor controller is electrically connected with the motor, the range extending controller is in communication connection with the engine controller and the motor controller respectively, and the motor controller is electrically connected with the electric cabinet; the extended range electric vehicle further comprises:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the extended range electric vehicle control method of any of the embodiments of the present invention.

According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the extended range electric vehicle control method according to any one of the embodiments of the present invention when executed.

According to the technical scheme of the embodiment of the invention, when the range-extended electric vehicle is in the range-extended working mode, the range-extended controller acquires an engine rotating speed signal from the engine controller and determines the external characteristic torque of the engine according to the engine rotating speed information; the range extending controller acquires the available torque of the motor from the motor controller and determines a target limiting torque according to the external characteristic torque of the engine and the available torque of the motor; and acquiring the current motor generating torque through the range-extending controller, and determining the motor output torque according to the target limit torque and the current motor generating torque so as to control the motor of the range-extending electric vehicle through the motor output torque. The invention solves the problem that the engine is likely to reverse after the engine is abnormally stopped, thereby causing the damage of the hardware of the engine, realizes the effective prevention of the reverse rotation of the engine, protects the engine from being damaged, and is safe and reliable.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a flowchart of a control method for an extended range electric vehicle according to an embodiment of the present invention;

fig. 2 is a flowchart of a control method for an extended range electric vehicle according to a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a range-extended electric vehicle control apparatus according to a third embodiment of the present invention;

fig. 4 is a schematic structural diagram of a range-extended control system included in the range-extended electric vehicle according to an embodiment of the invention;

fig. 5 is a schematic structural diagram of a range-extended control system included in another range-extended electric vehicle according to an embodiment of the invention;

fig. 6 is a schematic structural diagram of the extended range electric vehicle for implementing the method for controlling the extended range electric vehicle according to the embodiment of the invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present invention, 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 making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

It is to be understood that the terms "current," "target," and the like in the description and claims of the present invention and in the above-described drawings 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, system, article, or apparatus 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 apparatus.

Example one

Fig. 1 is a flowchart of an extended range electric vehicle control method according to an embodiment of the present invention, which is applicable to a situation where an engine is protected after a reverse rotation situation occurs, and the extended range electric vehicle control method may be executed by an extended range electric vehicle control device, which may be implemented in a form of hardware and/or software, and the extended range electric vehicle control device may be configured in an extended range electric vehicle. As shown in fig. 1, the extended range electric vehicle control method includes:

s110, when the extended range electric vehicle is in the extended range working mode, the extended range controller acquires an engine rotating speed signal from the engine controller and determines the external characteristic torque of the engine according to the engine rotating speed information.

The range extending device is used for automatically starting the vehicle-mounted battery and continuously providing electric energy for the vehicle-mounted battery when the electric quantity of the vehicle-mounted battery is consumed to the minimum critical limit value so as to realize the continuous driving capability of hundreds of kilometers. Therefore, the defect that the traditional electric vehicle has short driving distance can be effectively overcome, and a driver does not need to worry about the defect. In addition, the battery capacity of the extended range electric vehicle is only about 40% of that of the pure electric vehicle, so that the cost is greatly reduced, and meanwhile, compared with other new energy vehicle types, the extended range electric vehicle has obvious advantages in the aspects of energy utilization efficiency, price, convenience in use and the like.

The range-extended electric vehicle has two working modes, namely a pure electric working mode and a range-extended working mode, when the range-extended electric vehicle is in the pure electric working mode, the electric quantity of the power battery is sufficient, the vehicle running energy comes from the power battery, the power battery provides energy for the motor, the motor converts the electric energy into mechanical energy and provides the mechanical energy for wheels to drive the vehicle, and at the moment, the generator and the engine do not work; when the extended range electric vehicle is in the extended range operating mode, the power battery is insufficient, and the generator and the engine are started to generate electricity so as to generate electricity to drive the vehicle to run.

It can be understood that when the extended range electric vehicle is in the extended range operating mode, the power battery is insufficient to prevent the engine from rotating reversely, the external characteristic torque limit of the engine is considered, that is, the extended range controller acquires an engine speed signal from the engine controller, and the external characteristic curve table of the engine is checked according to the engine speed information to determine the external characteristic torque of the engine.

And S120, the range extending controller acquires the available torque of the motor from the motor controller and determines a target limiting torque according to the external characteristic torque of the engine and the available torque of the motor.

In this embodiment, the available torque of the motor may be obtained by testing through a dedicated testing device, and then the available torque of the motor is read through a motor controller, where the dedicated testing device may be implemented by using the prior art, and this embodiment does not limit this.

The target limit torque is the output limit power generation torque determined by considering the external characteristic torque limit of the engine according to the engine speed and combining the current available torque of the motor to prevent the reverse rotation of the engine when the engine is abnormally stopped and the engine speed suddenly changes.

In the present embodiment, the smaller one of the engine-outside characteristic torque and the motor available torque is selected as the target limit torque.

S130, obtaining the current motor generating torque through the range extending controller, and determining the motor output torque according to the target limiting torque and the current motor generating torque so as to control the motor of the range extending electric vehicle through the motor output torque.

The current motor generating torque can be calculated by the range-extending controller, the motor generating torque can be calculated by adopting the existing calculation formula, and the current motor generating torque is not limited in any way in the embodiment.

And after the current motor generating torque is obtained, determining the absolute value and the operation sign of the current motor generating torque based on the current motor generating torque.

Further, the smaller absolute value of the target limit torque and the current motor generating torque is selected as a sample motor torque, and the sample motor torque is multiplied by the operation sign to obtain a motor output torque, so that the motor torque is automatically unloaded, the motor is prevented from dragging the engine reversely, and the hardware damage of the engine is avoided.

According to the technical scheme of the embodiment of the invention, when the extended range electric vehicle is in the extended range working mode, the extended range controller acquires an engine rotating speed signal from the engine controller and determines the external characteristic torque of the engine according to the engine rotating speed information; the range extending controller acquires the available torque of the motor from the motor controller and determines a target limit torque according to the external characteristic torque of the engine and the available torque of the motor; and acquiring the current motor generating torque through the range extending controller, and determining the motor output torque according to the target limiting torque and the current motor generating torque so as to control the motor of the range extending electric vehicle through the motor output torque. The invention solves the problem that the engine may reverse after the engine is abnormally stopped, thereby causing the damage of the engine hardware, effectively preventing the reverse rotation of the engine, protecting the engine from being damaged, and being safe and reliable.

Example two

Fig. 2 is a flowchart of a control method for an extended range electric vehicle according to a second embodiment of the present invention, which provides an alternative implementation manner based on the above embodiments. As shown in fig. 2, the extended range electric vehicle control method includes:

s210, when the extended range electric vehicle is in the extended range working mode, the extended range controller acquires an engine rotating speed signal from the engine controller, checks an engine external characteristic curve table according to the engine rotating speed information, determines an engine external characteristic torque, and executes the step S230.

The engine external characteristic curve table can be calibrated through the torque one-dimensional table.

And S220, the range-extending controller acquires the available torque of the motor from the motor controller and executes the step S230.

S230, the smaller one of the engine external characteristic torque and the motor available torque is set as a target limit torque, and step S250 is executed.

S240, an absolute value of the current motor generation torque is extracted from the current motor generation torque, and step S250 is executed.

S250, the smaller one of the absolute values of the target limit torque and the current motor generation torque is set as a sample motor torque, and step S270 is executed.

And S260, extracting an operation sign of the current motor generating torque from the current motor generating torque, and executing the step S270.

And S270, multiplying the sample motor torque and the operation sign to obtain a motor output torque.

In the present embodiment, the current motor power generation torque does not exceed the engine limit torque value when the engine speed increases, decreases accordingly because of the external characteristic limit when the engine speed gradually decreases, and decreases to zero when the engine speed is low.

According to the technical scheme of the embodiment of the invention, when the engine is abnormally stopped, the engine can be prevented from reversely rotating, the hardware of the engine is prevented from being damaged, and the safety of the extended range electric vehicle is improved; in addition, the system is protected by the RCU, development and change of the slave controller are not involved, and modularized development is facilitated; in addition, the extended-range electric vehicle can prejudge the condition that the engine is possibly stopped, unload the power generation torque in time and has strong reliability; meanwhile, no hardware is added in the embodiment, so that the development cost can be effectively reduced, and the cost is saved.

EXAMPLE III

Fig. 3 is a schematic structural diagram of a range-extended electric vehicle control device according to a third embodiment of the present invention. As shown in fig. 3, the extended range electric vehicle control apparatus includes:

the engine external characteristic torque determining module 310 is configured to execute that when the extended range electric vehicle is in the extended range operating mode, the extended range controller obtains an engine speed signal from the engine controller, and determines an engine external characteristic torque according to the engine speed information;

a target limited torque determination module 320, configured to execute the range extension controller to obtain a motor available torque from a motor controller, and determine a target limited torque according to the engine external characteristic torque and the motor available torque;

and the motor control module 330 is configured to execute the steps of obtaining the current motor generation torque through the range-extending controller, and determining a motor output torque according to the target limit torque and the current motor generation torque, so as to control the motor of the range-extending electric vehicle through the motor output torque.

Optionally, the determining the external characteristic torque of the engine according to the engine speed information is specifically configured to:

and checking an engine external characteristic curve table according to the engine rotating speed information to determine the engine external characteristic torque.

Optionally, the determining a target limit torque according to the engine external characteristic torque and the available torque of the motor is specifically configured to:

the smaller one of the engine-out characteristic torque and the motor available torque is set as a target limit torque.

Optionally, the extended range electric vehicle control device further includes:

and the data separation module is used for determining the absolute value and the operation sign of the current motor generating torque based on the current motor generating torque.

Optionally, determining the output torque of the motor according to the target limiting torque and the current power generation torque of the motor includes:

a sample motor torque determination unit configured to perform, as a sample motor torque, whichever is smaller in absolute value of the target limit torque and the current motor generation torque;

and the motor output torque obtaining unit is used for multiplying the sample motor torque and the operation sign to obtain the motor output torque.

The extended range electric vehicle control device provided by the embodiment of the invention can execute the extended range electric vehicle control method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

Example four

Fig. 4 is a schematic structural diagram of a range-extended control system included in an extended range electric vehicle according to an embodiment of the present invention, where the extended range electric vehicle includes the range-extended control system, and the range-extended control system includes: the engine is in spline fit hardware connection with the motor, the engine is electrically connected with the engine controller through a low-voltage wire harness, the engine controller is used for acquiring relevant information of the engine and controlling the engine to work, the motor controller is electrically connected with the motor through the low-voltage wire harness, the motor controller acquires relevant information of the motor and controls the motor to rotate through high-voltage three-phase alternating current, the range-extending controller is in communication connection with the engine controller and the motor controller through a CAN (controller area network) bus respectively, the range-extending controller acquires engine rotating speed signals and torque and monitors and protects a range-extending control system, and the motor controller is electrically connected with the electric cabinet; when the motor is used as a generator, the flow direction of energy is engine-motor controller-electric control box.

Fig. 5 is a schematic structural diagram of a range-extended control system included in another range-extended electric vehicle according to an embodiment of the present invention, where the range-extended electric vehicle includes the range-extended control system and a vehicle control unit, and the range-extended control system includes: the whole vehicle controller comprises a range-extending controller, the engine is in spline fit hardware connection with the motor, the engine is electrically connected with the engine controller through a low-voltage wire harness, the engine controller is used for acquiring relevant information of the engine and controlling the engine to work, the motor controller is electrically connected with the motor through the low-voltage wire harness, the motor controller acquires the relevant information of the motor and controls the motor to rotate through high-voltage three-phase alternating current, the range-extending controller is respectively in communication connection with the engine controller and the motor controller through a CAN (controller area network) bus, the range-extending controller acquires a rotating speed signal and torque of the engine and monitors and protects a range-extending control system, and the motor controller is electrically connected with the electric cabinet; when the motor is used as a generator, the flow direction of the energy is engine-motor controller-electric control box.

Fig. 6 shows a schematic structural diagram of an extended range electric vehicle 610 that may be used to implement an embodiment of the present invention. Extended range electric vehicles include computers representing various forms of digital computer, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Extended range electric vehicles also include devices that represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 6, the extended range electric vehicle 610 includes at least one processor 611, and a memory communicatively connected to the at least one processor 611, such as a Read Only Memory (ROM) 612, a Random Access Memory (RAM) 613, and the like, wherein the memory stores computer programs executable by the at least one processor, and the processor 611 may perform various suitable actions and processes according to the computer programs stored in the Read Only Memory (ROM) 612 or the computer programs loaded from the storage unit 618 into the Random Access Memory (RAM) 613. In the RAM 613, various programs and data required for the operation of the extended range electric vehicle 610 can also be stored. The processor 611, the ROM 612, and the RAM 613 are connected to each other by a bus 614. An input/output (I/O) interface 615 is also connected to bus 614.

A plurality of components in the extended range electric vehicle 610 are connected to the I/O interface 615, including: an input unit 616 such as a keyboard, a mouse, or the like; an output unit 617 such as various types of displays, speakers, and the like; a storage unit 618, such as a magnetic disk, optical disk, or the like; and a communication unit 619 such as a network card, modem, wireless communication transceiver, or the like. The communication unit 619 allows the extended range electric vehicle 610 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.

The processor 611 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processors 611 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, or the like. The processor 611 performs the various methods and processes described above, such as an extended range electric vehicle control method.

In some embodiments, the extended range electric vehicle control method may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 618. In some embodiments, part or all of the computer program may be loaded and/or installed onto the extended range electric vehicle 610 via the ROM 612 and/or the communication unit 619. When the computer programs are loaded into the RAM 613 and executed by the processor 611, one or more steps of the extended range electric vehicle control method described above may be performed. Alternatively, in other embodiments, the processor 611 may be configured to perform the extended range electric vehicle control method in any other suitable manner (e.g., by way of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.

Computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described herein may be implemented on an extended range electric vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user may provide input to the extended range electric vehicle. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.

The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service are overcome.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A control method of an extended range electric vehicle is characterized by comprising the following steps:

when the range-extended electric vehicle is in the range-extended working mode, the range-extended controller acquires an engine rotating speed signal from the engine controller and determines the external characteristic torque of the engine according to the engine rotating speed information;

the range extending controller acquires the available torque of the motor from the motor controller and determines a target limit torque according to the external characteristic torque of the engine and the available torque of the motor;

and acquiring the current motor generating torque through the range-extending controller, and determining the motor output torque according to the target limit torque and the current motor generating torque so as to control the motor of the range-extending electric vehicle through the motor output torque.

2. The extended range electric vehicle control method according to claim 1, wherein the determining an engine external characteristic torque based on the engine speed information includes:

and checking an engine external characteristic curve table according to the engine rotating speed information to determine the engine external characteristic torque.

3. The extended range electric vehicle control method according to claim 1, wherein the determining a target limit torque from the engine external characteristic torque and the motor available torque includes:

the smaller one of the engine-out characteristic torque and the motor available torque is set as a target limit torque.

4. The extended range electric vehicle control method according to claim 1, further comprising, after acquiring the current motor generation torque by the extended range controller:

and determining the absolute value and the operation sign of the current motor generating torque based on the current motor generating torque.

5. The extended range electric vehicle control method according to claim 4, wherein determining a motor output torque based on the target limit torque and the current motor generation torque, includes:

taking the smaller one of the target limit torque and the absolute value of the current motor generation torque as a sample motor torque;

and multiplying the sample motor torque and the operation sign to obtain the motor output torque.

6. An extended range electric vehicle control device, comprising:

the engine external characteristic torque determining module is used for acquiring an engine rotating speed signal from the engine controller by the range extending controller when the range extending electric vehicle is in a range extending working mode, and determining the engine external characteristic torque according to the engine rotating speed information;

the target limited torque determination module is used for executing the range extending controller to acquire the available torque of the motor from the motor controller and determining the target limited torque according to the external characteristic torque of the engine and the available torque of the motor;

and the motor control module is used for acquiring the current motor generating torque through the range-extending controller, determining the motor output torque according to the target limit torque and the current motor generating torque, and controlling the motor of the range-extending electric vehicle through the motor output torque.

7. The extended range electric vehicle control apparatus of claim 6, wherein the determining of the engine external characteristic torque based on the engine speed information is specifically configured to:

and checking an engine external characteristic curve table according to the engine rotating speed information to determine the engine external characteristic torque.

8. An extended range electric vehicle, comprising an extended range control system, the extended range control system comprising: the engine is in spline fit hardware connection with the motor, the engine is electrically connected with the engine controller, the motor controller is electrically connected with the motor, the range-extending controller is respectively in communication connection with the engine controller and the motor controller, and the motor controller is electrically connected with the electric cabinet; the extended range electric vehicle further comprises:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the extended range electric vehicle control method of any one of claims 1-5.

9. The utility model provides an increase form electric motor car which characterized in that, increase form electric motor car includes increase range control system and vehicle control unit, increase the range control system and include: the vehicle control unit comprises an extended range controller, the engine is in spline fit hardware connection with the motor, the engine is electrically connected with the engine controller, the motor controller is electrically connected with the motor, the extended range controller is in communication connection with the engine controller and the motor controller respectively, and the motor controller is electrically connected with the electric cabinet; the extended range electric vehicle further comprises:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the extended range electric vehicle control method of any one of claims 1-5.

10. A computer readable storage medium storing computer instructions for causing a processor to implement the extended range electric vehicle control method of any one of claims 1-5 when executed.

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