Gear shifting method and system of hybrid vehicle type, medium and vehicle

Abstract

The embodiment of the invention provides a hybrid vehicle type gear shifting method and system, a medium and a vehicle, and the method comprises the steps that whether the vehicle is in a pure electric driving mode currently or not is determined according to the flameout state of an engine of the vehicle; under the condition that the vehicle is in the pure electric driving mode, a flag bit signal corresponding to the pure electric driving mode is sent to a four-wheel drive system of the vehicle; according to the received mark signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received gear shifting instruction, and corresponding gear shifting operation is carried out; under the condition that the vehicle is in the non-pure electric driving mode, a marking signal corresponding to the non-pure electric driving mode is sent to the four-wheel drive system; and the four-wheel drive system does not respond to the received gear shifting instruction according to the received mark signal corresponding to the non-pure electric drive mode. The gear shifting device aims at achieving gear shifting of a vehicle in the flameout state of a vehicle engine.

Description

Technical Field

[0001] The present application relates to the field of automobile drive technology, and in particular to a hybrid vehicle shifting method, system, medium and vehicle. Background Art

[0002] With the development of new energy vehicle technology, a large number of hybrid models driven by engines and motors have appeared on the market, which has led to a gradual increase in the market share of hybrid vehicles. However, the current vehicle shift control method cannot shift gears when the vehicle is in the off state, resulting in the problem that the four-wheel drive system of the whole vehicle cannot switch gears. The problem also exists in hybrid models, making it impossible to change gears when the engine is off, which affects the user's driving experience to a certain extent. Summary of the invention

[0003] In view of this, the embodiments of the present application provide a shifting method, system, medium and vehicle for a hybrid vehicle type that overcome the above-mentioned problems or at least partially solve the above-mentioned problems.

[0004] A first aspect of an embodiment of the present application provides a hybrid vehicle shifting method, the method comprising: Determine whether the vehicle is currently in a pure electric driving mode according to the engine shutdown state of the vehicle; When the vehicle is in pure electric drive mode, a flag signal corresponding to the pure electric drive mode is sent to the four-wheel drive system of the vehicle; According to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift command and performs a corresponding shift operation; When the vehicle is in a non-pure electric driving mode, sending a flag signal corresponding to the non-pure electric driving mode to the four-wheel drive system; According to the received flag signal corresponding to the non-pure electric driving mode, the four-wheel drive system does not respond to the received shift command.

[0005] Optionally, determining whether the vehicle is currently in a pure electric drive mode according to the engine shutdown state of the vehicle includes: Monitor and determine the vehicle's engine status; When the vehicle is in an engine-off state, reading status information of the vehicle's control unit; According to the status information, it is determined whether the vehicle is in a pure electric driving mode.

[0006] Optionally, the status information includes: remaining battery power, battery health status, and battery charge and discharge current and voltage; motor working status information and the power input source of the motor; engine working status information; and vehicle driving status information.

[0007] Optionally, determining whether the vehicle is in a pure electric driving mode according to the state information includes: Determine a first probability that the vehicle is in a pure electric driving mode based on the remaining battery power and the battery health status; Determining a second probability that the vehicle is in a pure electric driving mode according to the battery charging and discharging current and voltage and the driving state information; Determining a third probability that the vehicle is in a pure electric drive mode according to the working state information of the motor; Determining a fourth probability that the vehicle is in a pure electric drive mode according to a power input source of the motor; Determining a fifth probability that the vehicle is in a pure electric driving mode according to the engine operating state information; According to the first probability, the second probability, the third probability, the fourth probability and the fifth probability, it is determined whether the vehicle is in the pure electric driving mode.

[0008] Optionally, according to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift instruction and performs a corresponding shift operation, including: Reading the working state information of the motor according to the received flag signal corresponding to the pure electric drive mode and the received shifting instruction, and analyzing the working state information to determine the best shifting time; According to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift command and performs the shift operation at the moment corresponding to the optimal shift timing.

[0009] Optionally, the method further includes: When the gear shifting operation is completed, obtaining the current gear position information of the vehicle; Based on the current gear information, the output parameters of the motor are adjusted to match the current gear of the vehicle.

[0010] Optionally, the method further includes: During the gear shifting process, the vehicle's working status is monitored in real time; Determining a state of a vehicle shifting process according to an operating state of the vehicle; In the case where the state is abnormal, the shift operation is terminated and a warning message is output.

[0011] A second aspect of an embodiment of the present application provides a shift system for a hybrid vehicle, the system comprising: A driving mode determination module, used to determine whether the vehicle is currently in a pure electric driving mode according to the engine shutdown state of the vehicle; A signal sending module, used for sending a flag signal corresponding to the pure electric driving mode to the four-wheel drive system of the vehicle when the vehicle is in the pure electric driving mode; The four-wheel drive system is used to respond to the received shift command and perform a corresponding shift operation according to the received flag signal corresponding to the pure electric drive mode; The signal sending module is used to send a flag signal corresponding to the non-pure electric driving mode to the four-wheel drive system when the vehicle is in the non-pure electric driving mode; The four-wheel drive system is used to not respond to the received shift instruction according to the received flag signal corresponding to the non-pure electric drive mode.

[0012] A third aspect of an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in the hybrid vehicle shifting method described in the first aspect of the present application are implemented.

[0013] A fourth aspect of an embodiment of the present application provides a vehicle, on which is provided a hybrid vehicle gear shifting system as described in the second aspect of the present application, the hybrid vehicle gear shifting system executes the hybrid vehicle gear shifting method as described in the first aspect of the present application, or the vehicle is provided with a computer-readable storage medium as described in the third aspect of the present application.

[0014] The shifting method of a hybrid vehicle provided in this application has the following advantages: The embodiment of the present application provides a shifting method for a hybrid vehicle. First, according to the engine off state of the vehicle, it is determined whether the vehicle is currently in a pure electric drive mode; when the vehicle is in the pure electric drive mode, a flag signal corresponding to the pure electric drive mode is sent to the four-wheel drive system of the vehicle; according to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift instruction and performs the corresponding shift operation; when the vehicle is in a non-pure electric drive mode, a flag signal corresponding to the non-pure electric drive mode is sent to the four-wheel drive system; according to the received flag signal corresponding to the non-pure electric drive mode, the four-wheel drive system does not respond to the received shift instruction. Therefore, the shifting method for a hybrid vehicle provided by the present application can shift gears even when the vehicle is in an off state, when it is determined that the vehicle is in a pure electric drive mode, thereby improving the user's driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1A flow chart of a hybrid vehicle shifting method shown in one embodiment of the present application; Figure 2 A schematic diagram of a shifting system for a hybrid vehicle is shown as an embodiment of the present application. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] refer to Figure 1 , Figure 1 FIG. 1 is a schematic diagram of a hybrid vehicle shifting method according to an embodiment of the present application. Figure 1 As shown, the present application provides a hybrid vehicle shifting method, comprising: Step S1: Determine whether the vehicle is currently in a pure electric drive mode according to the engine shutdown state of the vehicle.

[0019] In this embodiment, a hybrid vehicle shifting method provided by the present application is applied to a hybrid vehicle, which is simply a car that combines a traditional fuel engine and an electric motor. The present application first detects and determines the engine shutdown state of the vehicle, and determines whether the vehicle is currently in a pure electric drive mode based on the engine shutdown state of the vehicle. An optional implementation is: when the engine of the vehicle is in a shutdown state, it is determined that the vehicle is in a pure electric drive mode; and when the vehicle is in other states other than the shutdown state, it is determined that the vehicle is in a non-pure electric drive mode.

[0020] Step S2: When the vehicle is in the pure electric drive mode, a flag signal corresponding to the pure electric drive mode is sent to the four-wheel drive system of the vehicle.

[0021] In this embodiment, when it is determined that the vehicle is in the pure electric drive mode, the vehicle control system sends a flag signal corresponding to the pure electric drive mode to the four-wheel drive system. The flag signal corresponding to the pure electric drive mode is used to inform the four-wheel drive system that the current vehicle is in the pure electric drive mode, and its power source is the battery and the electric motor.

[0022] Step S3: According to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift command and performs a corresponding shift operation.

[0023] In this embodiment, after the four-wheel drive system receives the flag signal of the pure electric drive mode, the four-wheel drive system will know that the current vehicle is in the pure electric drive mode. If the four-wheel drive system receives a corresponding shift command sent by the vehicle control system in the pure electric drive mode, the four-wheel drive system will respond to the shift command and perform corresponding shift operations based on the received shift command.

[0024] Step S4: When the vehicle is in a non-pure electric driving mode, a flag signal corresponding to the non-pure electric driving mode is sent to the four-wheel drive system.

[0025] In this embodiment, when it is determined that the vehicle is in a non-pure electric drive mode, the vehicle control system sends a flag signal corresponding to the non-pure electric drive mode to the four-wheel drive system. The flag signal corresponding to the non-pure electric drive mode is used to inform the four-wheel drive system that the current vehicle is in a non-pure electric drive mode, and its power source includes the joint operation of the engine and the electric motor.

[0026] Step S5: According to the received flag signal corresponding to the non-pure electric driving mode, the four-wheel drive system does not respond to the received shift command.

[0027] In this embodiment, after the four-wheel drive system receives the flag signal of the non-pure electric drive mode, the four-wheel drive system will know that the current vehicle is in the non-pure electric drive mode. If the four-wheel drive system receives the corresponding shift command sent by the vehicle control system in the non-pure electric drive mode, the four-wheel drive system will not respond to the shift command.

[0028] The embodiment of the present application provides a shifting method for a hybrid vehicle. First, according to the engine off state of the vehicle, it is determined whether the vehicle is currently in a pure electric drive mode; when the vehicle is in the pure electric drive mode, a flag signal corresponding to the pure electric drive mode is sent to the four-wheel drive system of the vehicle; according to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift instruction and performs the corresponding shift operation; when the vehicle is in a non-pure electric drive mode, a flag signal corresponding to the non-pure electric drive mode is sent to the four-wheel drive system; according to the received flag signal corresponding to the non-pure electric drive mode, the four-wheel drive system does not respond to the received shift instruction. Therefore, the shifting method for a hybrid vehicle provided by the present application can shift gears even when the vehicle is in an off state, when it is determined that the vehicle is in a pure electric drive mode, thereby improving the user's driving experience.

[0029] In combination with the above embodiments, in one implementation, the embodiment of the present application further provides a shifting method for a hybrid vehicle. In the shifting method for the hybrid vehicle, step S1 may include: monitoring and determining the engine status of the vehicle; when the vehicle is in the engine off state, reading the status information of the control unit of the vehicle; and determining whether the vehicle is in a pure electric drive mode according to the status information. The status information includes: the remaining battery power, the battery health status, and the battery charge and discharge current and voltage; the working status information of the motor and the power input source of the motor; the working status information of the engine; and the driving status information of the vehicle.

[0030] In this embodiment, the shifting method of a hybrid vehicle provided by the present application is mainly to enable the vehicle to shift gears in the pure electric drive mode without being affected by the engine state, so it is necessary to more accurately determine whether the vehicle is actually in the pure electric drive mode. Based on this, the present application provides another implementation method for step S1, specifically: real-time monitoring to determine the engine state of the vehicle, an optional implementation method is to monitor through a sensor or data bus connected to the engine management system. Engine state monitoring may include but is not limited to engine speed, ignition state, fuel injection state, etc. When the engine is in a flameout state, these parameters will reflect the corresponding inactive state, such as zero speed, no ignition signal, no fuel injection, etc. Therefore, when the engine speed is zero, and / or there is no ignition signal, and / or no fuel injection, it is determined that the engine is in a flameout state.

[0031] Based on the engine status of the vehicle determined by monitoring, determine whether the vehicle is in the engine off state. When it is determined that the vehicle is in the engine off state, further read the status information of the vehicle's control unit, and determine whether the vehicle is in the pure electric drive mode by analyzing the read status information. Among them, the vehicle's control unit includes at least: engine control unit, battery management system, motor control unit, etc.; the status information of the control unit includes at least: battery remaining power, battery health status, and battery charge and discharge current and voltage; motor working status information and motor power input source; engine working status information; vehicle driving status information.

[0032] In combination with the above embodiments, in one implementation, the embodiment of the present application further provides a shifting method for a hybrid vehicle. In the shifting method for the hybrid vehicle, whether the vehicle is in a pure electric drive mode is determined according to the state information, including: determining a first probability that the vehicle is in a pure electric drive mode according to the remaining battery power and the battery health status; determining a second probability that the vehicle is in a pure electric drive mode according to the battery charge and discharge current and voltage and driving state information; determining a third probability that the vehicle is in a pure electric drive mode according to the working state information of the motor; determining a fourth probability that the vehicle is in a pure electric drive mode according to the power input source of the motor; determining a fifth probability that the vehicle is in a pure electric drive mode according to the working state information of the engine; determining whether the vehicle is in a pure electric drive mode according to the first probability, the second probability, the third probability, the fourth probability and the fifth probability.

[0033] In this embodiment, the present application jointly determines whether the vehicle is in a pure electric drive mode based on multiple state information of the vehicle, thereby effectively improving the accuracy of the determination of the pure electric drive mode. Specifically: according to the values ​​of the two state information of the vehicle's battery remaining power (SOC, State of Charge) and the battery health state (such as the battery capacity attenuation degree, internal resistance change, etc.), determine the probability that the vehicle is in a pure electric drive mode corresponding to the specific values ​​of the two, and this probability is the first probability. The higher the battery remaining power and the better the battery health state, the higher the first probability of determining that the vehicle is in a pure electric drive mode. An optional implementation is to create a mapping relationship between the two state information of the battery remaining power and the battery health state and the first probability, and based on the specific values ​​of the two state information of the vehicle's battery remaining power (SOC, State of Charge) and the battery health state (such as the battery capacity attenuation degree, internal resistance change, etc.), query and obtain a first probability value corresponding to the specific values ​​of the two state information from the mapping relationship.

[0034] In this embodiment, based on the driving state information of the vehicle, the respective values ​​of the battery discharge current and voltage of the vehicle that are required to match the driving state when the current driving state of the vehicle is maintained only by the motor drive are determined. The value of the battery discharge current of the matching vehicle is compared with the value of the actual battery discharge current of the vehicle, and the value of the battery discharge voltage of the matching vehicle is compared with the value of the actual battery discharge voltage of the vehicle. Based on the two comparison results obtained and the values ​​of the battery charging current and voltage of the vehicle, the probability that the vehicle is in a pure electric drive mode is determined, and this probability is the second probability. When the battery of the vehicle is discharging at a stable current and voltage, and the discharge current and voltage match the driving requirements of the vehicle, and the charging current of the vehicle is zero or extremely low (indicating that the battery is not charged), the second probability of determining that the vehicle is in a pure electric drive mode is higher. Among them, the current actual discharge current and voltage of the vehicle match the driving demand of the vehicle means that the two comparison results between the current actual discharge current and voltage of the vehicle and the battery discharge current and voltage required to maintain the current driving state of the vehicle are both within the set fluctuation range, indicating that the actual discharge current and voltage of the vehicle at this time match the battery discharge current and voltage required to maintain the current driving state of the vehicle. At this time, the higher the possibility that the vehicle is in the pure electric drive mode, the higher the corresponding second probability; at the same time, the greater the two comparison results between the actual discharge current and voltage of the vehicle and the battery discharge current and voltage required to maintain the current driving state of the vehicle exceed the set fluctuation range (generally, the actual discharge current and voltage of the vehicle are lower than the battery discharge current and voltage required to maintain the current driving state of the vehicle), the lower the matching degree between the two, the lower the possibility that the corresponding vehicle is in the pure electric drive mode, and the lower the corresponding second probability. Among them, the driving state of the vehicle includes the speed, acceleration and power required under load conditions of the vehicle.

[0035] In this embodiment, according to the value of the working state information of the motor of the vehicle (such as motor speed, torque output, temperature, etc.), the probability that the vehicle is in the pure electric drive mode corresponding to the value is determined, and the probability is the third probability. When the motor is driving the vehicle at an appropriate speed and torque output, and the motor temperature is within a normal range, it indicates that the third probability that the vehicle is in the pure electric drive mode is high.

[0036] In this embodiment, the probability that the vehicle is in the pure electric drive mode is determined according to the power input source of the motor in the state information, and this probability is the fourth probability. The higher the fourth probability that the vehicle is in the pure electric drive mode, the higher the power input source of the motor comes from the battery instead of the engine or other parts of the hybrid system.

[0037] In this embodiment, the probability that the vehicle is in the pure electric drive mode is determined based on the values ​​of the vehicle's engine operating state information (such as engine speed, ignition state, fuel injection state, etc.), and this probability is the fifth probability. When the engine is in a flameout or idling state and does not provide power to the power system, the fifth probability that the vehicle is in the pure electric drive mode is higher.

[0038] In this embodiment, the first probability, the second probability, the third probability, the fourth probability and the fifth probability obtained above are calculated by a corresponding calculation method to obtain a comprehensive probability value. When the comprehensive probability value exceeds a set threshold, it is determined that the vehicle is in the pure electric drive mode. A simplest calculation method is to sum the obtained first probability, the second probability, the third probability, the fourth probability and the fifth probability to obtain a comprehensive probability value.

[0039] In this embodiment, when determining the first probability, the second probability, the third probability, the fourth probability and the fifth probability, the state information of the vehicle involved is different, and some state information can better reflect whether the vehicle is in the pure electric drive mode. Therefore, in order to more accurately determine whether the vehicle is in the pure electric drive mode, the present application sets corresponding weights for different probabilities determined based on different state information of the vehicle, and performs weighted summation. A higher weight is set for the probability corresponding to the state information that can better reflect whether the vehicle is in the pure electric drive mode. For example, the battery charge and discharge current and voltage of the vehicle, and the power input source of the motor can better reflect whether the vehicle is in the pure electric drive mode. Therefore, the present application sets a higher weight for the second probability corresponding to the battery charge and discharge current and voltage of the vehicle and the fourth probability corresponding to the power input source of the motor. Specifically, the weights corresponding to the first probability, the second probability, the third probability, the fourth probability and the fifth probability are set, and the values ​​of the first probability, the second probability, the third probability, the fourth probability and the fifth probability are respectively multiplied by their corresponding weights and then added to obtain the final comprehensive probability value.

[0040] In combination with the above embodiments, in one implementation, the embodiment of the present application further provides a shifting method for a hybrid vehicle. In the shifting method for a hybrid vehicle, according to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shifting instruction and performs a corresponding shifting operation, including: according to the received flag signal corresponding to the pure electric drive mode and the received shifting instruction, reading the working state information of the motor, analyzing the working state information, and determining the best shifting time; according to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shifting instruction and performs the shifting operation at the moment corresponding to the best shifting time.

[0041] In this embodiment, when the four-wheel drive system of the vehicle receives the flag signal corresponding to the pure electric drive mode, it will know that although the vehicle is in the engine off state at this time, the vehicle is also in the pure electric drive mode, and it can respond to the subsequent shift command received. At this time, after receiving the shift command, in order to reduce the impact and frustration during the shift process, so as to better shift, the present application will first perform a series of state reading and analysis operations to determine the best shift time, and then perform the shift operation corresponding to the shift command at the time corresponding to the best shift time. Specifically: the four-wheel drive system reads the current working state information of the motor, and the working state information includes but is not limited to the key parameters such as the motor speed, torque output, and temperature. By analyzing these working state information, it is determined whether the current motor state is suitable for the shift operation, so as to determine the best shift time. After determining the best shift time, the four-wheel drive system performs the shift operation corresponding to the shift command at the time corresponding to the best shift time. During the entire shift process, the four-wheel drive system will always keep monitoring the motor working state information to ensure the smooth progress of the shift operation.

[0042] In combination with the above embodiments, in one implementation, the embodiment of the present application further provides a hybrid vehicle shifting method. In the hybrid vehicle shifting method, the method further includes: obtaining the current gear position information of the vehicle when the gear shifting operation is completed; and adjusting the output parameters of the motor to match the current gear position of the vehicle based on the current gear position information.

[0043] In this embodiment, in order to ensure the smooth operation of the vehicle after the gear shift, avoid the impact or frustration to improve the user experience, the present application will synchronously adjust the output parameters of the motor to match the current gear of the vehicle after completing the gear shift in the pure electric drive mode. Specifically: after the four-wheel drive system completes the gear shift operation in the pure electric drive mode, a confirmation signal will be triggered, indicating that the gear shift process has ended and the vehicle has stabilized in the new gear. This confirmation signal may come from a gear shift actuator, a transmission system sensor or a vehicle control unit. After confirming that the gear shift operation is completed and the vehicle has stabilized in the new gear, the motor controller obtains the current gear information of the vehicle. An optional implementation method is to obtain it by reading the sensor data of the transmission system or querying the status information of the vehicle control unit. The current gear information may include key parameters such as the gear number (such as 1st gear, 2nd gear, D gear, R, etc.), gear ratio, and transmission efficiency. Based on the current gear information of the vehicle obtained, the output parameters of the motor are adjusted to ensure that the power output of the vehicle matches the gear. These output parameters may include the speed, torque output, power output, etc. of the motor.

[0044] In this embodiment, the communication between the four-wheel drive system and the motor controller is achieved through a high-speed and reliable communication network to meet the real-time and accurate information transmission requirements during the gear shifting process. Specifically, a controller area network (CAN) bus, a FlexRay bus, etc. can be used. In combination with the above embodiments, in one implementation, the embodiment of the present application also provides a hybrid vehicle shifting method. In the hybrid vehicle shifting method, the method also includes: during the gear shifting process, real-time monitoring of the working state of the vehicle; determining the state of the vehicle shifting process according to the working state of the vehicle; if the state is abnormal, terminating the gear shifting operation and outputting an alarm message.

[0045] In this embodiment, during the shifting process of the vehicle in the pure electric drive mode, the working state of the vehicle is monitored in real time, and the working state may include the motor state, the transmission system state, the vehicle motion state, and the battery state. The motor state includes the motor speed, temperature, torque output, etc.; the transmission system state includes the gear meshing condition, transmission efficiency, oil temperature, etc.; the vehicle motion state includes speed, acceleration, etc. The battery state includes the battery charge, temperature, etc. Based on the working state of the vehicle obtained by monitoring, determine whether the shifting process is normal. If it is determined that the state of the shifting process is abnormal, the shifting operation is terminated immediately, and the corresponding alarm information is output to the user, and the corresponding fault information is recorded for subsequent troubleshooting.

[0046] Based on the same inventive concept, an embodiment of the present application provides a shifting system for a hybrid vehicle, such as Figure 2 As shown, the system 200 includes: The driving mode determination module 201 is used to determine whether the vehicle is currently in a pure electric driving mode according to the engine shutdown state of the vehicle; The signal sending module 202 is used to send a flag signal corresponding to the pure electric driving mode to the four-wheel drive system of the vehicle when the vehicle is in the pure electric driving mode; The four-wheel drive system 203 is used to respond to the received shift command and perform corresponding shift operations according to the received flag signal corresponding to the pure electric drive mode; The signal sending module 202 is used to send a flag signal corresponding to the non-pure electric driving mode to the four-wheel drive system when the vehicle is in the non-pure electric driving mode; The four-wheel drive system 203 is used for not responding to the received shift instruction according to the received flag signal corresponding to the non-pure electric drive mode.

[0047] Optionally, the driving mode determination module 201 includes: A state monitoring module, used to monitor and determine the engine state of the vehicle; A status information reading module, used to read the status information of the control unit of the vehicle when the vehicle is in the engine-off state; The driving mode determination submodule is used to determine whether the vehicle is in a pure electric driving mode based on the status information; wherein the status information includes: the remaining battery power, the battery health status, and the battery charging and discharging current and voltage; the working status information of the motor and the power input source of the motor; the working status information of the engine; and the driving status information of the vehicle.

[0048] Optionally, the driving mode determination submodule includes: A first probability determination module, used to determine a first probability that the vehicle is in a pure electric drive mode according to the remaining battery power and the battery health status; A second probability determination module, used to determine a second probability that the vehicle is in a pure electric drive mode according to the battery charge and discharge current and voltage and the driving state information; A third probability determination module, used to determine a third probability that the vehicle is in a pure electric drive mode according to the working state information of the motor; a fourth probability determination module, configured to determine a fourth probability that the vehicle is in a pure electric drive mode according to a power input source of the motor; a fifth probability determination module, configured to determine a fifth probability that the vehicle is in a pure electric drive mode according to the operating state information of the engine; The first driving mode determination module is used to determine whether the vehicle is in a pure electric driving mode according to the first probability, the second probability, the third probability, the fourth probability and the fifth probability.

[0049] Optionally, the four-wheel drive system includes: an optimal shift timing determination module, configured to read the working state information of the motor according to the received flag signal corresponding to the pure electric drive mode and the received shift instruction, and analyze the working state information to determine the optimal shift timing; The control module is used to respond to the received shift instruction according to the received flag signal corresponding to the pure electric driving mode, and perform the shift operation at the moment corresponding to the optimal shift opportunity.

[0050] Optionally, the system 200 further includes: A gear information determination module, used to obtain the current gear information of the vehicle when the gear shift operation is completed; The parameter adjustment module is used to adjust the output parameters of the motor to match the current gear of the vehicle based on the current gear information.

[0051] Optionally, the system 200 further includes: A first state determination module is used to monitor the working state of the vehicle in real time during the gear shifting process; A second state determination module, used to determine the state of the vehicle shifting process according to the working state of the vehicle; The gear shift control module is used to terminate the gear shift operation and output a warning message when the state is abnormal.

[0052] Based on the same inventive concept, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in a hybrid vehicle shifting method as described in the first aspect of the present application are implemented.

[0053] Based on the same inventive concept, an embodiment of the present application provides a vehicle, on which is provided a hybrid vehicle gear shifting system as described in the second aspect of the present application, the hybrid vehicle gear shifting system executes the hybrid vehicle gear shifting method as described in the first aspect of the present application, or the vehicle is provided with a computer-readable storage medium as described in the third aspect of the present application.

[0054] As for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0055] It should be noted that, for the method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present application are not limited by the described order of actions, because according to the embodiments of the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present application.

[0056] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0057] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application may adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the embodiments of the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0058] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0059] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0060] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0061] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0062] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0063] The above is a detailed introduction to the shifting method, system, medium and vehicle of a hybrid vehicle provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for a person skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A hybrid vehicle shifting method, characterized in that: The method comprises: Determine whether the vehicle is currently in a pure electric driving mode according to the engine shutdown state of the vehicle; When the vehicle is in pure electric drive mode, a flag signal corresponding to the pure electric drive mode is sent to the four-wheel drive system of the vehicle; According to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift command and performs a corresponding shift operation; When the vehicle is in a non-pure electric driving mode, sending a flag signal corresponding to the non-pure electric driving mode to the four-wheel drive system; According to the received flag signal corresponding to the non-pure electric driving mode, the four-wheel drive system does not respond to the received shift command.

2. A hybrid vehicle shifting method according to claim 1, characterized in that: According to the engine shutdown state of the vehicle, determine whether the vehicle is currently in pure electric driving mode, including: Monitor and determine the vehicle's engine status; When the vehicle is in an engine-off state, reading status information of the vehicle's control unit; According to the status information, it is determined whether the vehicle is in a pure electric driving mode.

3. A hybrid vehicle shifting method according to claim 2, characterized in that: The status information includes: the remaining battery power, the battery health status, and the battery charge and discharge current and voltage; the motor working status information and the motor power input source; the engine working status information; and the vehicle driving status information.

4. A hybrid vehicle shifting method according to claim 3, characterized in that: Determining whether the vehicle is in a pure electric driving mode according to the state information includes: Determine a first probability that the vehicle is in a pure electric driving mode based on the remaining battery power and the battery health status; Determining a second probability that the vehicle is in a pure electric driving mode according to the battery charging and discharging current and voltage and the driving state information; Determining a third probability that the vehicle is in a pure electric drive mode according to the working state information of the motor; Determining a fourth probability that the vehicle is in a pure electric drive mode according to a power input source of the motor; Determining a fifth probability that the vehicle is in a pure electric driving mode according to the engine operating state information; According to the first probability, the second probability, the third probability, the fourth probability and the fifth probability, it is determined whether the vehicle is in the pure electric driving mode.

5. The hybrid vehicle shifting method according to claim 1, characterized in that: According to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift command and performs a corresponding shift operation, including: Reading the working state information of the motor according to the received flag signal corresponding to the pure electric drive mode and the received shifting instruction, and analyzing the working state information to determine the best shifting time; According to the received flag signal corresponding to the pure electric drive mode, the four-wheel drive system responds to the received shift command and performs the shift operation at the moment corresponding to the optimal shift timing.

6. The hybrid vehicle shifting method according to claim 1, characterized in that: The method further comprises: When the gear shifting operation is completed, obtaining the current gear position information of the vehicle; Based on the current gear information, the output parameters of the motor are adjusted to match the current gear of the vehicle.

7. The hybrid vehicle shifting method according to claim 1, characterized in that: The method further comprises: During the gear shifting process, the vehicle's working status is monitored in real time; Determining a state of a vehicle shifting process according to an operating state of the vehicle; In the case where the state is abnormal, the shift operation is terminated and a warning message is output.

8. A hybrid vehicle shifting system, characterized in that: The system comprises: A driving mode determination module, used to determine whether the vehicle is currently in a pure electric driving mode according to the engine shutdown state of the vehicle; A signal sending module, used for sending a flag signal corresponding to the pure electric driving mode to the four-wheel drive system of the vehicle when the vehicle is in the pure electric driving mode; The four-wheel drive system is used to respond to the received shift command and perform a corresponding shift operation according to the received flag signal corresponding to the pure electric drive mode; The signal sending module is used to send a flag signal corresponding to the non-pure electric driving mode to the four-wheel drive system when the vehicle is in the non-pure electric driving mode; The four-wheel drive system is used to not respond to the received shift instruction according to the received flag signal corresponding to the non-pure electric drive mode.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the shifting method of a hybrid vehicle model as claimed in any one of claims 1 to 7 are implemented.

10. A vehicle, characterized in that: The vehicle is provided with a hybrid vehicle shifting system as claimed in claim 8, and the hybrid vehicle shifting system executes the hybrid vehicle shifting method as claimed in any one of claims 1 to 7, or the vehicle is provided with a computer-readable storage medium as claimed in claim 9.

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