Hybrid vehicle control method, control device and hybrid vehicle

Abstract

The invention discloses a control method and device of a hybrid vehicle and the hybrid vehicle. The method comprises the steps that fault information of an engine is obtained, and the fault information at least comprises a starting fault and a torque limiting fault; obtaining the residual electric quantity of the power battery; and generating a control instruction set based on the fault information and the residual electric quantity, the control instruction set being used for controlling the hybrid vehicle to execute a safe driving strategy, the safe driving strategy comprises at least one of the following strategies: a pure electric driving strategy, a pure electric driving strategy and a strategy of adjusting motor driving power to preset power, a hybrid driving strategy and a strategy of forbidding charging of a power battery, an engine direct driving strategy and an engine direct driving strategy and a strategy of forbidding working of high-voltage accessories. According to the invention, the technical problem that the power battery is easy to be seriously lack of electricity when the power battery cannot be charged due to a fault of the hybrid vehicle is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid vehicles, and in particular to a control method and a control device for a hybrid vehicle and a hybrid vehicle. Background Art

[0002] After a hybrid vehicle fails, it is unable to use the engine or energy recovery to replenish the power battery in time. During the driving process of the vehicle, the power battery power continues to decrease, resulting in power loss. When the loss is serious, the power battery needs to be disassembled and returned to the factory for charging.

[0003] The above-mentioned power battery problems will affect the progress of the early development stage of commercial vehicles, and will also cause inconvenience to customers when they are put on the market.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a control method, a control device and a hybrid vehicle for a hybrid vehicle, so as to at least solve the technical problem that when the power battery of the hybrid vehicle cannot be recharged due to a fault, the power battery is prone to serious power loss.

[0006] According to one aspect of an embodiment of the present invention, a control method for a hybrid vehicle is provided, comprising: obtaining engine fault information, wherein the fault information includes at least: a starting fault and a torque limit fault; obtaining the remaining power of a power battery; generating a control instruction set based on the fault information and the remaining power, the control instruction set being used to control the hybrid vehicle to execute a safe driving strategy, wherein the safe driving strategy includes at least one of the following: a pure electric driving strategy, a pure electric driving strategy with the motor drive power adjusted to a preset power strategy, a hybrid driving strategy with the power battery prohibited from being charged, an engine direct drive strategy, and an engine direct drive strategy with the high-voltage accessories prohibited from operating.

[0007] Furthermore, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: when the engine is in a starting failure, determining whether the remaining power is greater than a first power threshold; if so, generating a first target instruction in the control instruction set, wherein the first target instruction is used to control the hybrid vehicle to execute a pure electric driving strategy.

[0008] Furthermore, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: when the engine is in a starting fault and the remaining power is less than or equal to a first power threshold, determining whether the remaining power is greater than a second power threshold; if so, generating a second target instruction in the control instruction set, wherein the second target instruction is used to control the hybrid vehicle to execute a pure electric driving strategy and adjust the motor drive power to a first preset power.

[0009] Furthermore, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: when the engine is in a starting fault and the remaining power is less than or equal to a second power threshold, a third target instruction in the control instruction set is generated, wherein the third target instruction is used to control the hybrid vehicle to execute a pure electric driving and adjust the motor drive power to a second preset power strategy, wherein the second preset power is less than the first preset power.

[0010] Furthermore, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: when the engine is in a starting fault and the remaining power is less than or equal to a second power threshold, controlling the hybrid vehicle to generate a prompt message, and the prompt message is used to prompt the hybrid vehicle to stop.

[0011] Furthermore, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: when the engine is in a torque-limited fault, determining whether the remaining power is greater than a third power threshold; if so, generating a fourth target instruction in the control instruction set, wherein the fourth target instruction is used to control the hybrid vehicle to execute a hybrid driving strategy and prohibit charging of the power battery.

[0012] Furthermore, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: when the engine is in a torque-limited fault and the remaining power is less than or equal to a third power threshold, determining whether the remaining power is greater than a fourth power threshold; if so, generating a fifth target instruction in the control instruction set, wherein the fifth target instruction is used to control the hybrid vehicle to execute an engine direct drive strategy.

[0013] Furthermore, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: when the engine is in a torque limiting fault and the remaining power is less than or equal to a fourth power threshold, generating a sixth target instruction in the control instruction set, wherein the sixth target instruction is used to control the hybrid vehicle to execute a strategy of direct engine drive and prohibiting high-voltage accessories from operating.

[0014] According to another aspect of an embodiment of the present invention, a control device for a hybrid vehicle is also provided, comprising: a first acquisition module, the first acquisition module is used to acquire engine fault information, wherein the fault information includes at least: a starting fault and a torque limit fault; a second acquisition module, the second acquisition module is used to acquire the remaining power of a power battery; a generation module, the generation module is used to generate a control instruction set based on the fault information and the remaining power, the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, wherein the safe driving strategy includes at least one of the following: a pure electric driving strategy, a pure electric driving strategy and a motor driving power adjustment to a preset power strategy, a hybrid driving strategy and a power battery charging prohibition strategy, an engine direct driving strategy and a high-voltage accessory prohibition strategy.

[0015] According to another aspect of an embodiment of the present invention, a hybrid vehicle is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the above control method.

[0016] In the embodiment of the present invention, when the hybrid vehicle fails to recharge the power battery due to a fault, the engine fault information and the remaining power of the power battery are obtained, and a corresponding driving strategy is given according to the engine fault information and the remaining power, that is, the corresponding driving mode is selected according to the specific working conditions to avoid the power battery from being seriously depleted during driving. The above control scheme solves the technical problem that the power battery is prone to serious depletion when the hybrid vehicle fails to recharge the power battery due to a fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a hardware structure block diagram of a computer terminal (or mobile device) for implementing a control method for a hybrid vehicle according to an embodiment of the present invention;

[0019] Figure 2 is a flow chart of a control method for a hybrid vehicle in a first embodiment of the present invention;

[0020] Figure 3 is a flow chart of a control method for a hybrid vehicle in a second embodiment of the present invention;

[0021] Figure 4 It is a structural block diagram of the control device of the hybrid vehicle in the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] Example 1

[0025] According to an embodiment of the present invention, an embodiment of a control method for a hybrid vehicle is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0026] Figure 1 1 is a hardware structure block diagram of a computer terminal (or mobile device) for implementing a control method for a hybrid vehicle according to an embodiment of the present invention. Figure 1 As shown, the computer terminal (or mobile device) may include one or more processors 102 (the processor may include but is not limited to a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processing (DSP) chip, a microprocessor (MCU), a field programmable logic device (FPGA), a neural network processor (NPU), a tensor processing unit (TPU), an artificial intelligence (AI) type processor, etc.) and a memory 104 for storing data. In addition, a transmission device 106 for communication functions, an input and output device 108, and a display 110 may also be included. It can be understood by those skilled in the art that Figure 1The structure shown is for illustration only and does not limit the structure of the above-mentioned computer terminal (or mobile device). For example, the computer terminal may also include more or fewer components than the above-mentioned structure description, or have a configuration different from the above-mentioned structure description.

[0027] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the control method of the hybrid vehicle in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the control method of the hybrid vehicle described above is realized. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the mobile terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0028] The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0029] The display 110 may be a touch screen type liquid crystal display (LCD). The liquid crystal display may enable a user to interact with a user interface of the mobile terminal. In some embodiments, the mobile terminal has a graphical user interface (GUI), and a user may interact with the GUI by finger contact and / or gestures on a touch-sensitive surface, wherein the human-computer interaction functions here may optionally include the following interactions: creating web pages, drawing, word processing, making electronic documents, games, video conferencing, instant messaging, sending and receiving emails, call interfaces, playing digital videos, playing digital music and / or web browsing, etc. Executable instructions for performing the above human-computer interaction functions are configured / stored in a computer program product or readable storage medium executable by one or more processors.

[0030] Figure 2 is a flow chart of a control method for a hybrid vehicle according to one embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0031] Step S1: Acquire engine fault information, wherein the fault information at least includes: starting fault and torque limit fault.

[0032] It should be noted that starting failure refers to the engine failing to start normally, and the engine cannot be started by the starter or the motor, that is, the engine cannot work. Torque limit failure means that the engine can work, but during the operation of the engine, the torque output of the engine is limited, resulting in a decrease in the power performance of the hybrid vehicle.

[0033] Step S2: Obtain the remaining power of the power battery.

[0034] It should be noted that when the remaining power is low, the motor drive power needs to be reduced to ensure the vehicle's mileage.

[0035] Step S3: Generate a control instruction set based on the fault information and the remaining power, the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, wherein the safe driving strategy includes at least one of the following: a pure electric driving strategy, a pure electric driving strategy and a motor driving power adjustment to a preset power strategy, a hybrid driving strategy and a power battery prohibition strategy, an engine direct drive strategy and an engine direct drive strategy and a high-voltage accessory prohibition strategy.

[0036] In the embodiment of the present application, when the hybrid vehicle cannot recharge the power battery due to a fault, the engine fault information and the remaining power of the power battery are obtained, and the corresponding driving strategy is given according to the engine fault information and the remaining power, that is, the corresponding driving mode is selected according to the specific working conditions to avoid the power battery from being seriously depleted during driving. The above control scheme solves the technical problem that the power battery is prone to serious depletion when the hybrid vehicle cannot recharge the power battery due to a fault.

[0037] In an exemplary embodiment of the present application, in step S3, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including the following steps:

[0038] In the case of an engine startup failure, it is determined whether the remaining power is greater than a first power threshold. If so, a first target instruction in a control instruction set is generated, wherein the first target instruction is used to control the hybrid vehicle to execute a pure electric driving strategy.

[0039] It should be noted that the engine starting failure means that the engine cannot work and the hybrid vehicle can only be driven by pure electric power. The remaining power is greater than the first power threshold, indicating that the power battery is not in a low power state. The hybrid vehicle can run normally in pure electric drive mode, that is, the motor torque is set to be equal to the driver's required torque.

[0040] In an exemplary embodiment of the present application, in step S3, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including the following steps:

[0041] When the engine is in a starting failure and the remaining power is less than or equal to the first power threshold, it is determined whether the remaining power is greater than the second power threshold. If so, a second target instruction in the control instruction set is generated, wherein the second target instruction is used to control the hybrid vehicle to perform pure electric driving and adjust the motor drive power to the first preset power.

[0042] It should be noted that the engine is in a start-up failure, which means that the engine cannot work and the hybrid vehicle can only be driven by pure electricity. The remaining power is less than or equal to the first power threshold and greater than the second power threshold, which means that the power battery is in a low power state. In order to allow the hybrid vehicle to travel longer to reach the maintenance location, it is necessary to reduce the motor drive power to reduce the power consumption of the power battery. Among them, the first preset power is less than the maximum drive power of the motor.

[0043] In an exemplary embodiment of the present application, in step S3, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, and further includes the following steps:

[0044] When the engine is in a starting failure and the remaining power is less than or equal to the second power threshold, a third target instruction in the control instruction set is generated, wherein the third target instruction is used to control the hybrid vehicle to perform pure electric driving and adjust the motor drive power to a second preset power strategy, wherein the second preset power is less than the first preset power.

[0045] It should be noted that the engine starting failure means that the engine cannot work and the hybrid vehicle can only be driven by pure electricity. The remaining power is less than or equal to the second power threshold, indicating that the power battery is in a low power state and the power battery is about to be in a low power state. In order to enable the hybrid vehicle to travel longer to reach the maintenance location, it is necessary to reduce the motor drive power to reduce the power consumption of the power battery. In the second preset power, it is less than the first preset power.

[0046] Furthermore, when the engine is in a startup failure and the remaining power is less than or equal to the second power threshold, the hybrid vehicle is controlled to generate a prompt message, which is used to prompt the hybrid vehicle to stop. The prompt message is generated to avoid the danger of the vehicle suddenly losing power.

[0047] Furthermore, while the prompt information is generated, the meter indicates the time T, and when T is greater than or equal to T1, the hybrid vehicle is controlled to enter the high-voltage power-down process. By setting the timer, the danger of the vehicle suddenly losing power can be avoided.

[0048] In an exemplary embodiment of the present application, in step S3, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including the following steps:

[0049] When the engine is in a torque-limited fault, determine whether the remaining power is greater than a third power threshold; if so, generate a fourth target instruction in the control instruction set, wherein the fourth target instruction is used to control the hybrid vehicle to perform hybrid driving and prohibit charging of the power battery.

[0050] It should be noted that the engine is in a start-up failure, which means that the engine can work, but the engine's torque output is limited. The driving modes of hybrid vehicles include pure electric drive, hybrid drive and engine direct drive. The remaining power is greater than the third power threshold, indicating that the power battery is not in a low power state. In this case, in order to meet the driver's required torque, the motor and the engine drive the vehicle at the same time, that is, the driver's required torque is equal to the motor output torque plus the engine output torque after the torque limit, so the hybrid vehicle is controlled to perform hybrid driving, and the strategy of charging the power battery is prohibited. Due to the power battery failure, charging cannot be performed to avoid power loss.

[0051] In an exemplary embodiment of the present application, in step S3, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including the following steps:

[0052] When the engine is in a torque-limited fault and the remaining power is less than or equal to the third power threshold, determine whether the remaining power is greater than the fourth power threshold; if so, generate the fifth target instruction in the control instruction set, wherein the fifth target instruction is used to control the hybrid vehicle to execute the engine direct drive strategy.

[0053] It should be noted that the engine is in a start-up fault, which means that the engine can work, but the engine torque output is limited. The driving modes of hybrid vehicles include pure electric drive, hybrid drive and engine direct drive. The remaining power is less than or equal to the third power threshold and greater than the fourth power threshold, indicating that the power battery is in a low power state. In order to avoid power battery depletion, the hybrid vehicle is controlled to execute the engine direct drive strategy, and the power battery only provides power for high-voltage accessories.

[0054] In an exemplary embodiment of the present application, in step S3, a control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including the following steps:

[0055] When the engine is in a torque-limiting fault and the remaining power is less than or equal to the fourth power threshold, a sixth target instruction in the control instruction set is generated, wherein the sixth target instruction is used to control the hybrid vehicle to execute a strategy of direct engine drive and prohibiting high-voltage accessories from operating.

[0056] It should be noted that the engine is in a start-up failure, which means that the engine can work, but the torque output of the engine is limited. The driving modes of hybrid vehicles include pure electric drive, hybrid drive and engine direct drive. The remaining power is less than or equal to the fourth power threshold, which means that the power battery is in a low power state and the power battery is about to be in a power-deficient state. In order to avoid power battery power deficiency, the hybrid vehicle is controlled to execute the strategy of engine direct drive and prohibiting the operation of high-voltage accessories to avoid power battery depletion.

[0057] In a specific embodiment of the present application, a control method for a hybrid vehicle is as follows: Figure 3 Specifically, the control steps include:

[0058] S100: Determine the engine status and whether there is a fault. If the engine is not faulty, the engine can enter the hybrid mode, including sub-modes of the hybrid mode such as parallel drive, parallel charging and engine single drive. If the engine has a fault, go to S200. If not, end.

[0059] S200: Determine the engine fault type. If the fault type causes the engine to fail to start normally, including starting the engine by a starter and starting the engine by a motor, go to S300; if not, go to S1100;

[0060] S300: Determine whether the current vehicle SOC level is in a low-battery state. If the SOC is greater than SOC①, go to S400; otherwise, go to S500;

[0061] S400: The HCU determines that the vehicle has entered pure electric mode, prohibits starting the engine, the clutch is in a disengaged state, and the motor torque is equal to the torque required by the driver.

[0062] S500: Determine the current SOC state of the vehicle. If the SOC is less than or equal to SOC① and greater than SOC②, go to S600; otherwise, go to S700;

[0063] S600: The HCU determines that the vehicle has entered the pure electric mode, prohibits starting the engine, the clutch is in a disengaged state, and limits the motor drive power to 50% (calibratable).

[0064] S700: Determine the current SOC state of the vehicle. If the SOC is less than or equal to SOC②, go to S800;

[0065] S800: HCU sends a text message "Vehicle failure, please pull over immediately" to the instrument to remind the driver to avoid the danger of sudden loss of vehicle power. The motor drive power is limited to 20% (calibrable). At the same time, the instrument prompts to start timing and then goes to S900.

[0066] S900: If the time T indicated by the instrument is less than T1, return to the previous step to continue timing; if it is greater than or equal to T1, go to S1000;

[0067] S1000: Enter the high voltage power-down process and then end.

[0068] S1100: determining whether there is a fault in the current engine that will cause the engine to limit output torque, if yes, proceed to S1200, if no, end;

[0069] S1200: Determine whether the current vehicle SOC level is in a low battery state. If the SOC is greater than SOC①, go to S1300; otherwise, go to S1400;

[0070] S1300: HCU control allows entry into hybrid mode, and prohibits entry into sub-modes of hybrid mode such as driving charging and parking charging. The vehicle's required torque is equal to the motor output torque plus the engine output torque after torque limit.

[0071] S1400: Determine the current SOC state of the vehicle. If the SOC is less than or equal to SOC① and greater than SOC②, go to S1500; otherwise, go to S1600;

[0072] S1500: The HCU controls the vehicle to enter the engine direct drive mode, and prohibits entering the pure electric mode and hybrid mode. In the engine direct drive mode, the motor does not participate in the power chain torque output.

[0073] S1600: Determine the current SOC state of the vehicle. If the SOC is less than or equal to SOC②, go to S1700;

[0074] S1700: HCU controls the vehicle to enter the engine direct drive mode, prohibiting entry into the pure electric mode and hybrid mode. In the engine direct drive mode, high-voltage accessories are prohibited from working, and the available driving torque sent by the HCU motor is 0Nm.

[0075] It should be noted that SOC refers to the remaining power of the power battery, SOC① and SOC② both refer to the low power threshold of the power battery, and SOC② is less than SOC①. T1 is the preset value of the high voltage power-down timing, and HCU is the vehicle controller.

[0076] According to another specific embodiment of the present application, a control device for a hybrid vehicle is provided.

[0077] Combination Figure 4 As shown, the control device includes: a first acquisition module, a second acquisition module and a generation module. The first acquisition module is used to obtain the fault information of the engine, wherein the fault information includes at least: starting fault and torque limit fault. The second acquisition module is used to obtain the remaining power of the power battery. The generation module is used to generate a control instruction set based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, wherein the safe driving strategy includes at least one of the following: a pure electric driving strategy, a pure electric driving strategy and a strategy of adjusting the motor drive power to a preset power, a hybrid driving strategy and a strategy of prohibiting charging of the power battery, an engine direct drive strategy, and an engine direct drive strategy and prohibiting the operation of high-voltage accessories.

[0078] In the embodiment of the present application, when the hybrid vehicle cannot recharge the power battery due to a fault, the engine fault information and the remaining power of the power battery are obtained, and the corresponding driving strategy is given according to the engine fault information and the remaining power, that is, the corresponding driving mode is selected according to the specific working conditions to avoid the power battery from being seriously depleted during driving. The above control scheme solves the technical problem that the power battery is prone to serious depletion when the hybrid vehicle cannot recharge the power battery due to a fault.

[0079] According to another specific embodiment of the present application, a hybrid vehicle is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the control method in the above embodiment.

[0080] In an embodiment of the present application, the processor may be configured to perform the following steps through a computer program:

[0081] Step S1: Acquire engine fault information, wherein the fault information at least includes: starting fault and torque limit fault.

[0082] Step S2: Obtain the remaining power of the power battery.

[0083] Step S3: Generate a control instruction set based on the fault information and the remaining power, the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, wherein the safe driving strategy includes at least one of the following: a pure electric driving strategy, a pure electric driving strategy and a motor driving power adjustment to a preset power strategy, a hybrid driving strategy and a power battery prohibition strategy, an engine direct drive strategy and an engine direct drive strategy and a high-voltage accessory prohibition strategy.

[0084] In the embodiment of the present application, when the hybrid vehicle cannot recharge the power battery due to a fault, the engine fault information and the remaining power of the power battery are obtained, and the corresponding driving strategy is given according to the engine fault information and the remaining power, that is, the corresponding driving mode is selected according to the specific working conditions to avoid the power battery from being seriously depleted during driving. The above control scheme solves the technical problem that the power battery is prone to serious depletion when the hybrid vehicle cannot recharge the power battery due to a fault.

[0085] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0086] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0087] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0088] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0089] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0090] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0091] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A control method for a hybrid vehicle, characterized in that: include: Acquiring engine fault information, wherein the fault information at least includes: a starting fault and a torque limit fault; Get the remaining power of the power battery; A control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, wherein the safe driving strategy includes at least one of the following: a pure electric driving strategy, a pure electric driving strategy and a motor driving power adjustment to a preset power strategy, a hybrid driving strategy and a power battery prohibition strategy, an engine direct drive strategy, and an engine direct drive strategy and a high-voltage accessory prohibition strategy.

2. The control method according to claim 1, characterized in that: A control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: In the case where the engine is in the starting failure, determining whether the remaining power is greater than a first power threshold; If yes, a first target instruction in the control instruction set is generated, wherein the first target instruction is used to control the hybrid vehicle to execute a pure electric driving strategy.

3. The control method according to claim 2, characterized in that: A control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: When the engine is in the starting fault and the remaining power is less than or equal to the first power threshold, determining whether the remaining power is greater than a second power threshold; If yes, a second target instruction in the control instruction set is generated, wherein the second target instruction is used to control the hybrid vehicle to execute pure electric driving and adjust the motor drive power to a first preset power.

4. The control method according to claim 3, characterized in that: A control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: When the engine is in the starting fault and the remaining power is less than or equal to the second power threshold, a third target instruction in the control instruction set is generated, wherein the third target instruction is used to control the hybrid vehicle to perform pure electric driving and adjust the motor drive power to a second preset power, wherein the second preset power is less than the first preset power.

5. The control method according to claim 4, characterized in that: A control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: When the engine is in the starting failure and the remaining power is less than or equal to the second power threshold, the hybrid vehicle is controlled to generate prompt information, where the prompt information is used to prompt the hybrid vehicle to stop.

6. The control method according to claim 1, characterized in that: A control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: When the engine is in the torque limiting fault, determining whether the remaining power is greater than a third power threshold; If yes, a fourth target instruction in the control instruction set is generated, wherein the fourth target instruction is used to control the hybrid vehicle to execute hybrid driving and prohibit charging of the power battery.

7. The control method according to claim 6, characterized in that: A control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: When the engine is in the torque limiting fault and the remaining power is less than or equal to the third power threshold, determining whether the remaining power is greater than a fourth power threshold; If yes, a fifth target instruction in the control instruction set is generated, wherein the fifth target instruction is used to control the hybrid vehicle to execute an engine direct drive strategy.

8. The control method according to claim 7, characterized in that: A control instruction set is generated based on the fault information and the remaining power, and the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, including: When the engine is in the torque limiting fault and the remaining power is less than or equal to the fourth power threshold, a sixth target instruction in the control instruction set is generated, wherein the sixth target instruction is used to control the hybrid vehicle to execute the strategy of engine direct drive and prohibiting high-voltage accessories from operating.

9. A control device for a hybrid vehicle, characterized in that: include: A first acquisition module, the first acquisition module is used to acquire fault information of the engine, wherein the fault information at least includes: a starting fault and a torque limit fault; A second acquisition module, the second acquisition module is used to obtain the remaining power of the power battery; A generation module, the generation module is used to generate a control instruction set based on the fault information and the remaining power, the control instruction set is used to control the hybrid vehicle to execute a safe driving strategy, wherein the safe driving strategy includes at least one of the following: a pure electric driving strategy, a pure electric driving strategy and a motor driving power adjustment to a preset power strategy, a hybrid driving strategy and a power battery charging prohibition strategy, an engine direct drive strategy and an engine direct drive strategy and a high-voltage accessory prohibition strategy.

10. A hybrid vehicle, comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the control method according to any one of claims 1 to 8.

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