CN114684104A - Control method and control system of hybrid vehicle - Google Patents

Abstract

The invention discloses a control method of a hybrid vehicle, which comprises the following steps: acquiring a power-on request of a vehicle; after the power-on request is obtained, detecting the power-on state of a driving motor and the starting state of an engine; determining a signal state of the vehicle based on the power-on state and the start state. The control method of the hybrid vehicle can detect the power-on state of the driving motor and the starting state of the engine in the power-on process, and is convenient for a user to directly obtain the relevant information of the engine before driving the vehicle, so that the safety of driving the vehicle is improved, and the user experience is favorably improved.

Description

Control method and control system of hybrid vehicle

Technical Field

The invention relates to the technical field of vehicle manufacturing, in particular to a control method of a hybrid vehicle and a control system suitable for the control method.

Background

In the related technology, in the power-on process of the hybrid vehicle, the hybrid vehicle is generally a pure electric vehicle, whether an engine can be started or not is not detected, the detection is performed only by starting the engine during the running of the vehicle, so that the situation that a driver can know the whole vehicle situation when getting on the vehicle is not facilitated, and if the vehicle starts and the engine module cannot be started, the problem that the engine fault cannot be reported is caused, so that the driver cannot know the situation of the engine, the normal driving of the driver is influenced, and an improvement space exists.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a control method for a hybrid vehicle, which can detect both the power-on state of a driving motor and the starting state of an engine during the power-on process, so that a user can directly obtain information related to the engine before driving the vehicle.

The control method of the hybrid vehicle according to the embodiment of the invention includes: acquiring a power-on request of a vehicle; after the power-on request is obtained, detecting the power-on state of a driving motor and the starting state of an engine; determining a signal state of the vehicle based on the power-on state and the start state.

According to the control method of the hybrid vehicle, the power-on state of the driving motor and the starting state of the engine can be detected in the power-on process, and a user can conveniently and directly obtain related information of the engine before driving the vehicle, so that the safety of driving the vehicle is improved, and the user experience is favorably improved.

According to some embodiments of the invention, the method of controlling a hybrid vehicle, the determining a signal state of the vehicle according to the power-on state and the start state comprises: outputting a pure electric ready signal after the electrifying state is detected to be electrifying completion; and simultaneously controlling the driving motor to drag the engine to start, and outputting a mixing preparation ready signal when the engine is detected to be successfully started.

According to some embodiments of the invention, the method of controlling a hybrid vehicle, the determining a signal state of the vehicle according to the power-on state and the start state comprises: after the electrifying state is detected to be incomplete, controlling a starting motor to start the engine; and outputting an engine fault signal upon detecting that the engine has not been successfully started; an engine ready signal is output upon detection of successful engine start.

A control method of a hybrid vehicle according to some embodiments of the present invention further includes: and calculating the driving range of the vehicle according to the state signal of the vehicle.

According to the control method of a hybrid vehicle according to some embodiments of the present invention, the calculating the driving range of the vehicle according to the state signal of the vehicle includes: when the state signal is a pure electric ready signal, calculating the driving mileage of the vehicle according to the residual electric quantity of the battery; when the state signal is an engine readiness signal, calculating the driving mileage of the vehicle according to the residual oil quantity of the oil tank; and when the state signal is a hybrid-ready signal, calculating the driving mileage of the vehicle according to the residual electric quantity of the battery and the residual oil quantity of the oil tank.

A control method of a hybrid vehicle according to some embodiments of the present invention further includes: detecting a lower high voltage fault signal of the driving motor; acquiring a vehicle speed when the lower high voltage fault signal is detected, and selecting the lower voltage of the driving motor or acquiring the current state of the engine according to the vehicle speed; controlling the engine according to the current state of the engine.

According to the control method of a hybrid vehicle according to some embodiments of the present invention, the selecting the driving motor high-voltage lower voltage or obtaining the current state of the engine according to the vehicle speed includes: comparing the vehicle speed with a set speed; when the vehicle speed is lower than or equal to the set speed, controlling the driving motor to be electrified under high voltage; and acquiring the current state of the engine when the vehicle speed is higher than the set speed.

According to the control method of a hybrid vehicle according to some embodiments of the invention, the controlling the engine according to the current state of the engine includes: starting the engine when a current state of the engine is not in an operating state; controlling the engine to perform a full driver's required torque when a current state of the engine is in an operating state; wherein the vehicle is controlled to fail shut down when starting the engine is unsuccessful.

A control method of a hybrid vehicle according to some embodiments of the present invention further includes: acquiring the vehicle speed again after controlling the engine; controlling the driving motor to be electrified under high voltage when the reacquired vehicle speed is lower than a set speed; and acquiring the current state of the engine again when the acquired vehicle speed is higher than or equal to the set speed.

The invention also provides a control system of the hybrid vehicle.

According to a control system of a hybrid vehicle of an embodiment of the present invention, the control system includes: the detection module is used for acquiring a power-on request of a vehicle and detecting the power-on state of a driving motor and the starting state of an engine after the power-on request is acquired; a control module to determine a signal state of the vehicle based on the power-on state and the start state, and to control the engine based on a current state of the engine.

Compared with the prior art, the control system of the hybrid vehicle and the control method of the hybrid vehicle have the same advantages, and are not described again.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention 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 flowchart of a control method of a hybrid vehicle according to an embodiment of the invention;

FIG. 2 is a logic control diagram (at power-up) of a control method of a hybrid vehicle according to an embodiment of the present invention;

FIG. 3 is a logic control diagram (at low high voltage fault) of a control method of a hybrid vehicle according to an embodiment of the invention;

FIG. 4 is a flowchart of calculating a range of a vehicle in a control method of a hybrid vehicle according to an embodiment of the present invention;

fig. 5 is a schematic configuration diagram of a control system of a hybrid vehicle according to an embodiment of the present invention.

Reference numerals:

a control system 100 for a hybrid vehicle,

the device comprises a detection module 1 and a control module 2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following describes a control method of a hybrid vehicle according to an embodiment of the present invention with reference to fig. 1 to 5, and the control method is particularly suitable for hybrid vehicles, and can simultaneously detect the power-on state of a driving motor and the starting state of an engine during the power-on process of the vehicle, so that a driver can directly obtain information of the driving motor and the engine of the vehicle before driving the vehicle, know the power output capability of the vehicle, and improve the safety of driving the vehicle.

As shown in fig. 1, a control method of a hybrid vehicle according to an embodiment of the present invention includes the steps of:

s01: a power-up request for the vehicle is obtained.

It should be noted that, after the driver enters the vehicle, the vehicle key may be inserted into the key hole, that is, the vehicle key inputs the start signal to the vehicle controller, so that the vehicle controller obtains the power-on request to determine that the driver is ready to start the vehicle. After the vehicle control unit receives the power-on request, the drive motor and the power battery are controlled to be electrically connected according to the power-on request, so that the drive motor enters the starting operation mode.

S02: after a power-on request is acquired, detecting the power-on state of a driving motor and the starting state of an engine;

that is, the power-on request is acquired when it is determined that the driver is ready to start the vehicle. At this time, the power-on state of the driving motor may be detected to determine whether the driving motor is normally powered on after receiving the power-on request, thereby determining whether the driving motor is normally operated, and further determining whether the vehicle is capable of performing power output. The starting state of the engine can be further detected after the power-on state of the driving motor is detected, so as to determine whether the driving motor works normally, and further determine whether the vehicle can output fuel power.

S03: the signal state of the vehicle is determined based on the power-on state and the start state.

That is, after the driving motor and the engine are detected, the signal state of the vehicle is judged according to the power-on state of the driving motor and the starting state of the engine, and whether the vehicle can be normally started is determined according to the signal state of the vehicle, so that a user can directly obtain the relevant information of the engine before driving the vehicle, and the safety of driving the vehicle is improved.

It can be understood that whether the vehicle can normally run or not can be determined by detecting the power-on state of the driving motor and the starting state of the engine, and when the vehicle can normally run, whether the vehicle can run in a pure electric driving mode, a pure fuel driving mode or a hybrid power output mode can be determined. The vehicle state signal can be indicated towards the user after being determined, so that the user can visually know the power state of the vehicle after getting on the vehicle and inputting the starting signal, the problem that the driver is aware of the power state of the vehicle in the driving process and the vehicle is broken down is avoided, and the driving safety is improved.

According to the control method of the hybrid vehicle, the power-on state of the driving motor and the starting state of the engine can be detected in the power-on process, a user can directly obtain related information of the engine before driving the vehicle, the power state of the vehicle can be intuitively known, and therefore safety of driving the vehicle is improved, and user experience is improved.

In some embodiments, determining the signal state of the vehicle based on the power-on state and the start state comprises:

outputting a pure electric ready signal after detecting that the power-on state is the power-on completion; and simultaneously controlling a driving motor to drive the engine to start, and outputting a hybrid-operation ready signal when the engine is detected to be successfully started.

That is, as shown in fig. 2, firstly, whether a power-on request exists is detected, if the power-on request exists, whether the power-on of the high voltage is completed is continuously detected, if the power-on state is detected to be the power-on completion of the high voltage, a pure electric READY signal is output, meanwhile, a driving motor is controlled to drag the engine to start, the starting state of the engine is detected, if the starting state of the engine is detected to be the normal starting, an engine READY signal is output, at this time, according to the pure electric READY signal and the engine READY signal, namely, the driving motor and the engine can normally work, the signal state of the current vehicle is determined to be a hybrid READY signal, so that a driver can directly obtain the signal state of the vehicle before driving the vehicle, thereby improving the safety of driving the vehicle,

it should be noted that, as shown in fig. 2, whether a power-on request is detected, if a power-on request is detected, whether power-on of high voltage is completed is continuously detected, if the power-on state is detected to be the completion of power-on of high voltage, a pure electric READY signal is output, meanwhile, a driving motor is controlled to drag an engine to start, and the starting state of the engine is detected, and if the starting state of the engine is detected to be the abnormal starting, an engine starting fault signal is output, so that a driver can directly obtain information that the driving motor can normally work and the engine starts a fault before driving the vehicle, thereby improving the safety of driving the vehicle and facilitating improvement of user experience. At the moment, according to the pure electric READY signal and the engine starting fault signal, namely the driving motor can work normally, and the information of the engine fault, the signal state of the current vehicle is determined to be the pure electric READY signal.

In some embodiments, determining the signal state of the vehicle based on the power-on state and the start state comprises: controlling a starting motor to start the engine after detecting that the power-on state is not completed; and outputting an engine fault signal when detecting that the engine is not successfully started; upon detection of successful engine start, an engine ready signal is output.

That is to say, as shown in fig. 2, whether a power-on request exists is detected first, if the power-on request exists, whether the power-on of the high voltage is completed is detected continuously, if the power-on state is detected to be that the power-on of the high voltage is not completed, a signal of a pure power-on fault is output, a starting motor is controlled to start the engine according to the signal, the starting state of the engine is detected, and if the starting state of the engine is detected to be that the engine cannot be normally started, a signal of the starting fault of the engine is output, so that a driver can directly obtain information of the pure power-on fault and the starting fault of the engine before driving the vehicle, thereby improving the safety of driving the vehicle and being beneficial to improving user experience. If the starting state of the engine is detected to be the state capable of being started normally, an engine READY signal is output, namely the current signal state of the vehicle is the engine READY signal, namely the engine can work normally, the motor is driven to have a fault, and a driver can directly obtain information of pure electric fault and normal starting of the engine before driving the vehicle, so that the safety of driving the vehicle is improved.

In some embodiments, a control method of a hybrid vehicle, further includes: and calculating the driving range of the vehicle according to the state signal of the vehicle. That is to say, the driving mileage of the vehicle is calculated according to the state signal of the vehicle obtained by the power-on state of the driving motor and the starting state of the engine, and the phenomenon that the displayed driving mileage is too large or too small when the driving motor or the engine has problems is avoided, so that the accuracy of calculating the driving mileage is improved, the safety of the vehicle in the driving process is improved, and a driver can conveniently and reasonably arrange the driving stroke.

As shown in fig. 4, calculating the driving range of the vehicle according to the state signal of the vehicle includes:

when the state signal is a pure electric READY signal, the endurance mileage of the vehicle is calculated according to the battery residual capacity, namely, the running of the vehicle is controlled by the driving motor at the moment, the engine does not work, at the moment, the endurance mileage of the vehicle is calculated according to the battery residual capacity, the influence of the engine is conveniently eliminated when the endurance mileage of the vehicle is calculated, so that the accuracy of the endurance mileage calculation is improved, and a driver can reasonably arrange a driving stroke.

And when the state signal is an engine READY signal, calculating the driving mileage of the vehicle according to the residual oil quantity of the oil tank. That is to say, the running of the vehicle is controlled by the engine at the moment, the driving motor does not work, at the moment, the endurance mileage of the vehicle is calculated according to the residual oil quantity of the oil tank, the influence of the driving motor is conveniently eliminated when the endurance mileage of the vehicle is calculated, so that the accuracy of the endurance mileage calculation is improved, and a driver can conveniently and reasonably arrange a driving stroke.

And when the state signal is a hybrid READY signal, calculating the driving mileage of the vehicle according to the residual battery capacity and the residual fuel capacity of the fuel tank. That is to say, the driving of the vehicle is controlled by the driving motor and the engine at the same time, and at the moment, the endurance mileage of the vehicle is calculated according to the remaining battery capacity and the remaining fuel capacity of the fuel tank, so that the accuracy of endurance mileage calculation is improved when the endurance mileage of the vehicle is calculated, and a driver can conveniently and reasonably arrange a driving route.

It should be noted that, in the present invention, the way of calculating the driving range of the corresponding vehicle according to the state signals of the vehicle at different times is real-time updating, so as to improve the accuracy of calculating the driving range and facilitate the driver to reasonably arrange the driving range.

In some embodiments, as shown in fig. 3, the control method of the hybrid vehicle further includes:

the lower high-voltage fault signal of the driving motor is detected, so that whether the driving motor breaks down or not is judged conveniently, and the driving safety of the vehicle is improved.

As shown in fig. 3, when the low-high-voltage fault signal is detected, the vehicle speed is obtained, and the low-voltage of the driving motor is selected according to the vehicle speed or the current state of the engine is obtained, and the engine is controlled according to the current state of the engine.

That is, as shown in fig. 3, a low high voltage (non-emergency) fault signal is detected, if the low high voltage (non-emergency) fault signal is detected, a hybrid READY indicator lamp and a pure READY indicator lamp on an instrument panel of the vehicle are turned off, at this time, a current vehicle speed is obtained, and the current vehicle speed is compared with a preset speed to select the high voltage reduction of the driving motor or obtain the current state of the engine, that is, the high voltage electricity is stopped to use according to a high voltage safety requirement, so that the fault type of the vehicle is judged, and the safety in the driving process of the vehicle is improved.

In other words, when the driving motor is found to be in fault, if the vehicle speed is detected to meet the requirement of continuous running, the high-voltage down-conversion of the driving motor can be controlled, if the vehicle speed is detected to fail to meet the requirement of continuous running, the current state of the engine is acquired, and then the power output of the engine is controlled, so that in the power down-conversion process of the driving motor in fault, the power of the engine is quickly intervened, on the premise of safety, the power interruption time is shortened, the situation that power is suddenly interrupted to cause danger under special working conditions such as climbing and the like is avoided, and the driving safety is improved.

As shown in fig. 3, selecting the high-voltage of the driving motor or obtaining the current state of the engine according to the vehicle speed includes:

comparing the vehicle speed with a set speed, and controlling the high-voltage low-voltage of the driving motor when the vehicle speed is lower than or equal to the set speed; the current state of the engine is acquired when the vehicle speed is higher than a set speed.

The method comprises the steps of firstly obtaining a current vehicle speed, comparing the current vehicle speed with a set speed, controlling the high-voltage and low-voltage of a driving motor if the current vehicle speed is lower than or equal to the set speed, determining the position of a high-voltage and low-voltage mark if the current vehicle speed is higher than the set speed, and obtaining the current state of an engine so as to determine whether the engine is in a normal running state or not, so that a driver can determine the fault type of a vehicle to select power intervention of the engine, and the safety of the vehicle in the driving process is improved.

As shown in fig. 3, controlling the engine according to the current state of the engine includes: starting the engine when the current state of the engine is not in the running state; controlling the engine to perform a full torque demand of the driver when a current state of the engine is in an operating state; wherein the vehicle is controlled to fail to stop when starting the engine is unsuccessful.

That is, when there is a low-voltage fault and the current vehicle speed is higher than the set vehicle speed, the current state of the engine is detected, and controls the engine according to the current state of the engine, as shown in fig. 3, it is first detected whether the engine is in an operating state, if it is detected that the engine is in the operating state, the engine executes all the torque required by the driver, ensures the normal running of the vehicle, improves the driving safety of the vehicle, and starts the engine if the engine is not detected to be in the running state, after starting the engine, detecting whether the engine is started successfully, if the engine is started successfully, executing all torque required by a driver by the engine, under the safe prerequisite, reduce power interruption time, avoid under special operating mode such as climbing that power breaks off suddenly and produces dangerous condition, guarantee that the vehicle can normal operating. If the engine is not started successfully, the vehicle is controlled to stop in a fault mode, so that the fault type of the vehicle can be judged conveniently, and the safety of the vehicle in the driving process can be improved.

As shown in fig. 3, the control method of the hybrid vehicle further includes: acquiring the vehicle speed again after controlling the engine; controlling the driving motor to be electrified under high voltage when the acquired vehicle speed is lower than the set speed; the current state of the engine is acquired again when the acquired vehicle speed is equal to or higher than the set speed.

That is, as shown in fig. 3, when there is a high voltage fault and the current vehicle speed is higher than the set vehicle speed, the high voltage power-off flag position is detected, at this time, the vehicle speed is acquired again, and the acquired vehicle speed is compared with the set speed, and if the acquired vehicle speed is lower than the set speed, that is, when the driver has a deceleration demand. The high-voltage relay is controlled to be switched off; therefore, the high-voltage reduction of the driving motor is realized, the safety in the driving process of the vehicle is convenient to improve, if the vehicle speed obtained again is not lower than the set speed and is higher than or equal to the set speed, the current state information of the engine is continuously obtained, and the engine is controlled according to the current state of the engine, so that the fault type of the vehicle is convenient to judge, and the safety in the driving process of the vehicle can be improved.

The present invention also provides a control system 100 for a hybrid vehicle.

As shown in fig. 5, a control system 100 of a hybrid vehicle according to an embodiment of the present invention includes: a detection module 1 and a control module 2.

The detection module 1 is used for acquiring a power-on request of a vehicle and detecting a power-on state of a driving motor and a starting state of an engine after the power-on request is acquired; it should be noted that, in the present invention, the detection module 1, when actually executed, makes an operation of starting the vehicle before starting the hybrid vehicle, wherein the detection module 1 obtains a power-on request of the vehicle to determine whether the driver is ready to start the vehicle.

That is to say, when it is determined that the driver is ready to start the vehicle, that is, the detection module 1 obtains the power-on request, at this time, the detection module 1 simultaneously detects the driving motor and the engine to determine the power-on state of the driving motor and the starting state of the engine, so as to determine whether the vehicle can be started normally, and improve the accuracy of starting the vehicle.

The control module 2 is used to determine the signal state of the vehicle based on the power-on state and the start state, and to control the engine based on the current state of the engine. That is to say, after the detection module 1 detects the driving motor and the engine, the detection module 1 transmits the power-on state of the driving motor and the starting state of the engine to the control module 2, and at the moment, the control module 2 controls the engine according to the information and the current state of the engine, so that a user can directly obtain the relevant information of the engine before driving the vehicle, the normal starting of the vehicle can be ensured, and the safety of driving the vehicle is improved.

The operational flow performed by the control system 100 of the hybrid vehicle according to some embodiments of the present invention when executing the above method is described below with reference to fig. 2 to 4:

first, as shown in fig. 2, when the control system 100 of the hybrid vehicle is started, it is detected whether there is a power-on demand, if no power-on demand is detected, the detection is continued, and if a power-on demand is detected, it is detected whether the power-on of the high voltage is completed.

Further, as shown in fig. 2, after the completion of high-voltage power-on is detected, a pure READY signal is output, meanwhile, the driving motor is controlled to drive the engine to start, whether the engine is started successfully is detected, if the engine is started successfully, the engine READY signal is output, and at this time, a hybrid READY signal is output together according to the pure READY signal and the engine READY signal.

And outputting a pure electric power-on fault signal when the high-voltage power-on is not detected to be completed, starting the engine by the starting motor, detecting whether the engine is successfully started or not, outputting an engine starting fault signal if the engine is not successfully started, and outputting an engine READY signal if the engine is successfully started.

At this time, as shown in fig. 4, the cruising range is calculated based on different READY signals of the vehicle, the cruising range is calculated based on the remaining battery capacity when the control system 100 of the hybrid vehicle outputs the pure READY signal, the cruising range is calculated based on the remaining battery capacity and the remaining fuel tank capacity when the control system 100 of the hybrid vehicle outputs the hybrid READY signal, and the cruising range is calculated based on the remaining fuel tank capacity when the control system 100 of the hybrid vehicle outputs the engine READY signal.

After the vehicle is started, as shown in fig. 3, the control system 100 of the hybrid vehicle detects whether there is a low-high-voltage (non-emergency) fault, and if the low-high-voltage fault is detected, it indicates that the hybrid READY and the pure READY lamps are turned off, at this time, the control system 100 of the hybrid vehicle acquires the current vehicle speed of the vehicle, compares the current vehicle speed with a set value, and if the current vehicle speed is not higher than the set value, executes high-voltage powering down.

Further, if the current vehicle speed is higher than the set value, the position of the high-voltage power-off mark is detected, whether the engine is in the operating state or not is detected, if the engine is detected to be in the operating state, the engine is controlled to execute all torque required by the driver, at the moment, the whole vehicle keeps normal operation,

specifically, if the engine is detected not to be in the operating state, the engine is controlled to be started, whether the engine is started successfully or not is detected, if the engine is detected not to be started successfully, the vehicle is controlled to stop, if the engine is detected to be started successfully, the engine executes all torque required by a driver, and at the moment, the whole vehicle keeps running normally.

At this time, the vehicle speed of the vehicle is obtained again, if the vehicle speed is higher than the set value, high-voltage power-down is executed, if the vehicle speed is not higher than the set value, whether the engine is in the operating state or not is continuously detected, and the detection process is the same as the process for detecting whether the engine is in the operating state or not.

Thus, the control system 100 of the hybrid vehicle in the present invention can be used to implement the method of the hybrid vehicle described in any of the above embodiments. And after the control method is executed by the control system: the pure electric power and the engine power can be detected in the vehicle electrifying process, and different READY signals are displayed in the instrument, so that a driver can clearly know the power output condition of the whole vehicle in the electrifying stage: and the actual endurance mileage of the vehicle can be calculated according to different READY conditions so as to improve the accuracy of the endurance mileage, avoid that the displayed endurance mileage is still very large when a power source has a problem, and ensure that a driver accurately obtains the actual endurance mileage: and in the power-off process of vehicle failure, the engine can be started firstly, so that the power of the engine is quickly intervened, the power interruption time is reduced on the premise of safety, the situation that the power is suddenly interrupted under special working conditions such as climbing and the like to generate danger is avoided, and the driving safety is improved.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 invention. 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 more 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 invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified 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 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 invention 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 the present invention.

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 more 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 invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in 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 invention 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 separate 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 invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A control method of a hybrid vehicle, characterized by comprising:

acquiring a power-on request of a vehicle;

after the power-on request is obtained, detecting the power-on state of a driving motor and the starting state of an engine;

determining a signal state of the vehicle based on the power-on state and the start state.

2. The control method of a hybrid vehicle according to claim 1, wherein said determining a signal state of the vehicle based on the power-on state and the start state comprises:

outputting a pure electric ready signal after the electrifying state is detected to be electrifying completion;

and simultaneously controlling the driving motor to drive the engine to start, and outputting a mixing preparation ready signal when the engine is detected to be successfully started.

3. The control method of a hybrid vehicle according to claim 1, wherein said determining a signal state of the vehicle based on the power-on state and the start state comprises:

after the power-on state is detected to be that power-on is not completed, controlling a starting motor to start the engine; and

outputting an engine fault signal upon detecting that the engine has not been successfully started;

an engine ready signal is output upon detection of successful engine start.

4. The control method of the hybrid vehicle according to claim 1, characterized by further comprising:

and calculating the driving range of the vehicle according to the state signal of the vehicle.

5. The control method of a hybrid vehicle according to claim 4, wherein the calculating the range of the vehicle from the state signal of the vehicle includes:

when the state signal is a pure electric ready signal, calculating the driving mileage of the vehicle according to the residual electric quantity of the battery;

when the state signal is an engine readiness signal, calculating the driving mileage of the vehicle according to the residual oil quantity of the oil tank;

and when the state signal is a hybrid-ready signal, calculating the driving mileage of the vehicle according to the residual electric quantity of the battery and the residual oil quantity of the oil tank.

6. The control method of the hybrid vehicle according to claim 1, characterized by further comprising:

detecting a lower high voltage fault signal of the driving motor;

acquiring a vehicle speed when the lower high voltage fault signal is detected, and selecting the lower voltage of the driving motor or acquiring the current state of the engine according to the vehicle speed;

controlling the engine according to the current state of the engine.

7. The control method of the hybrid vehicle according to claim 6, wherein the selecting the driving motor high-voltage lower voltage or obtaining the current state of the engine according to the vehicle speed includes:

comparing the vehicle speed with a set speed;

when the vehicle speed is lower than or equal to the set speed, controlling the driving motor to be electrified under high voltage;

and acquiring the current state of the engine when the vehicle speed is higher than the set speed.

8. The control method of the hybrid vehicle according to claim 6, wherein the controlling the engine according to the current state of the engine includes:

starting the engine when a current state of the engine is not in an operating state;

controlling the engine to perform a full driver's required torque when a current state of the engine is in an operating state; wherein

Controlling the vehicle to stall in the event of a failure to start the engine.

9. The control method of the hybrid vehicle according to claim 6, characterized by further comprising:

acquiring the vehicle speed again after controlling the engine;

when the reacquired vehicle speed is lower than a set speed, controlling the driving motor to be electrified under high voltage;

and acquiring the current state of the engine again when the acquired vehicle speed is higher than or equal to the set speed.

10. A control system (100) of a hybrid vehicle, characterized in that the control system comprises:

the detection module (1) is used for acquiring a power-on request of a vehicle, and detecting the power-on state of a driving motor and the starting state of an engine after the power-on request is acquired;

a control module (2), the control module (2) being configured to determine a signal state of the vehicle based on the power-on state and the start state, and to control the engine based on a current state of the engine.

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