Vehicle control method, vehicle and storage medium

Abstract

The embodiment of the invention provides a vehicle control method, a vehicle and a storage medium, and the method comprises the following steps: responding to a condition that a range extender of a target vehicle is in a starting state, and obtaining an initial state parameter of the target vehicle, the initial state parameters are used for representing power generation mode information, cell temperature information and charging power information of the target vehicle in an initial state; determining a target power generation working condition corresponding to the target vehicle based on the initial state parameter; a target power generation control strategy is determined according to the target power generation working condition, and the target power generation control strategy is used for controlling assembly operation states corresponding to a plurality of energy management assemblies in the target vehicle; and executing power generation control operation on the target vehicle based on the target power generation control strategy. The technical problems of low energy utilization efficiency and poor reliability of a low-temperature parking power generation strategy in related technologies are solved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of electric vehicles, in particular, to a vehicle control method, a vehicle and a storage medium. BACKGROUND

[0002] In the field of range-extending electric vehicles, energy management and efficiency optimization are key to improving vehicle performance and user experience. With the increasing demand for electric vehicles in cold weather, how to effectively use the range extender for stationary power generation in low temperature environment has become a challenge to be solved. The low-temperature stationary power generation strategy of the related art range-extending electric vehicle is difficult to meet the charging demand while ensuring the stability of the engine speed due to the reduction of the charge power limit value of the battery management system (BMS), especially when the positive temperature coefficient (PTC) heater fails, which easily leads to the vehicle being stranded due to the inability to effectively heat the battery, thereby resulting in low energy utilization efficiency and reduced reliability of the vehicle in low temperature environment.

[0003] At present, there is no good solution to the above problems. SUMMARY

[0004] Embodiments of the present application provide a vehicle control method, a vehicle and a storage medium to at least solve the technical problems of low energy utilization efficiency and poor reliability of the low-temperature stationary power generation strategy in the related art.

[0005] According to an aspect of an embodiment of the present application, a vehicle control method is provided, comprising: in response to a range extender of a target vehicle being in a starting state, obtaining initial state parameters of the target vehicle, wherein the initial state parameters are used to represent power generation mode information, cell temperature information and charging power information of the target vehicle in an initial state; determining a target power generation working condition corresponding to the target vehicle based on the initial state parameters; determining a target power generation control strategy by using the target power generation working condition, wherein the target power generation control strategy is used to control the component running state of a plurality of energy management components in the target vehicle; and performing a power generation control operation on the target vehicle based on the target power generation control strategy.

[0006] Optionally, determining the target power generation working condition corresponding to the target vehicle based on the initial state parameters comprises: in response to the initial state parameters satisfying a first preset condition, determining that the target power generation working condition is an idle power generation working condition; or, in response to the initial state parameters not satisfying the first preset condition, determining that the target power generation working condition is a normal power generation working condition.

[0007] Optionally, the first preset condition comprises at least one of the following: determining, based on the power generation mode information, that the target vehicle is in the parking power generation mode, determining, based on the battery temperature information, that an initial battery temperature of the target vehicle is less than or equal to a first temperature threshold, and determining, based on the charging power information, that an initial charging power of the target vehicle is less than or equal to a first power threshold.

[0008] Optionally, determining the target power generation control strategy by using the target power generation working condition comprises: in response to the target power generation working condition being the idle power generation working condition, controlling the first energy management component to maintain the torque control mode according to the target power generation torque, and controlling the second energy management component to switch to the idle control mode according to the target idle rotating speed.

[0009] Optionally, determining the target power generation control strategy by using the target power generation working condition comprises: in response to the target power generation working condition being the normal power generation working condition, controlling the first energy management component to switch to the rotating speed control mode according to the target rotating speed, and controlling the second energy management component to switch to the torque response mode according to the target torque adjustment parameter.

[0010] Optionally, the vehicle control method further comprises: performing updating processing on the initial state parameter to obtain a real-time state parameter, wherein the real-time state parameter is used to represent power generation mode information, battery temperature information and charging power information of the target vehicle in a real-time state; and in response to the real-time state parameter satisfying a second preset condition, determining that the target power generation working condition is the normal power generation working condition.

[0011] Optionally, the second preset condition comprises at least one of the following: determining, based on the power generation mode information, that the target vehicle is not in the parking power generation mode, determining, based on the battery temperature information, that a real-time battery temperature of the target vehicle is greater than or equal to a second temperature threshold, and determining, based on the charging power information, that a real-time charging power of the target vehicle is greater than or equal to a second power threshold.

[0012] Optionally, the first energy management component is a generator control component, and the second energy management component is an engine control component.

[0013] According to another aspect of the embodiments of the present application, a vehicle control device is also provided, comprising: an acquisition module configured to acquire initial state parameters of a target vehicle in response to an extender of the target vehicle being in a starting state, wherein the initial state parameters are used to represent power generation mode information, battery temperature information and charging power information of the target vehicle in an initial state; a first determination module configured to determine a target power generation working condition corresponding to the target vehicle based on the initial state parameters; a second determination module configured to determine a target power generation control strategy by using the target power generation working condition, wherein the target power generation control strategy is used to control component operating states of a plurality of energy management components in the target vehicle; and an execution module configured to perform a power generation control operation on the target vehicle based on the target power generation control strategy.

[0014] Optionally, the first determining module is further configured to: determine the target power generation working condition as the idle power generation working condition in response to the initial state parameter satisfying a first preset condition; or determine the target power generation working condition as the normal power generation working condition in response to the initial state parameter not satisfying the first preset condition.

[0015] Optionally, the first preset condition comprises at least one of: determining that the target vehicle is in the parking power generation mode based on the power generation mode information, determining that an initial battery temperature of the target vehicle is less than or equal to a first temperature threshold based on the battery temperature information, and determining that an initial charging power of the target vehicle is less than or equal to a first power threshold based on the charging power information.

[0016] Optionally, the second determining module is further configured to: control the first energy management component to maintain the torque control mode according to the target power generation torque and control the second energy management component to switch to the idle control mode according to the target idle rotating speed in response to the target power generation working condition being the idle power generation working condition.

[0017] Optionally, the second determining module is further configured to: control the first energy management component to switch to the rotating speed control mode according to the target rotating speed and control the second energy management component to switch to the torque response mode according to the target torque adjustment parameter in response to the target power generation working condition being the normal power generation working condition.

[0018] Optionally, the vehicle control device further comprises an updating module configured to update the initial state parameter to obtain a real-time state parameter, wherein the real-time state parameter is used to represent power generation mode information, battery temperature information and charging power information of the target vehicle in a real-time state; and the first determining module is further configured to determine the target power generation working condition as the normal power generation working condition in response to the real-time state parameter satisfying a second preset condition.

[0019] Optionally, the second preset condition comprises at least one of: determining that the target vehicle is not in the parking power generation mode based on the power generation mode information, determining that a real-time battery temperature of the target vehicle is greater than or equal to a second temperature threshold based on the battery temperature information, and determining that a real-time charging power of the target vehicle is greater than or equal to a second power threshold based on the charging power information.

[0020] Optionally, the first energy management component is a generator control component, and the second energy management component is an engine control component.

[0021] According to another aspect of the embodiments of the present application, a vehicle is further provided, comprising: a memory storing an executable program; and a processor configured to run the program, wherein the program is configured to execute the method in the embodiments of the present application when running.

[0022] According to another aspect of an embodiment of the present application, a computer-readable storage medium is also provided, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present application.

[0023] According to another aspect of the embodiments of the present application, a computer program product is further provided, including a computer program, which implements the methods in various embodiments of the present application when executed by a processor.

[0024] According to another aspect of an embodiment of the present application, a computer program product is further provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present application is implemented.

[0025] According to another aspect of the embodiments of the present application, a computer program is further provided, which implements the methods in various embodiments of the present application when executed by a processor.

[0026] In an embodiment of the present application, in response to the target vehicle's range extender being in the startup state, the target vehicle's initial state parameters are obtained, and then the target power generation condition corresponding to the target vehicle is determined based on the initial state parameters. Then, a target power generation control strategy is determined using the target power generation condition, and finally, a power generation control operation is performed on the target vehicle based on the target power generation control strategy. In this way, the target power generation condition that best suits the current environment can be automatically identified and entered based on the initial state parameters of the vehicle at startup, thereby decoupling speed control from charging power. Regardless of how the charging power changes, the engine speed can be stably controlled, effectively avoiding the gear knocking problem and improving charging efficiency. The embodiment of the present application aims to achieve efficient energy management and stable power generation performance of the range-extended vehicle under different operating conditions, especially low temperature and charging power-limited environments, through an intelligent power generation control strategy, thereby avoiding the low power generation efficiency, the susceptibility to gear knocking or high speed problems in traditional power generation strategies, and the risk of breakdown under extreme operating conditions, ultimately achieving the technical effects of improving vehicle energy utilization efficiency, improving driving experience, and enhancing system reliability, thereby solving the technical problems of low energy utilization efficiency and poor reliability of low-temperature parking power generation strategies in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 is a flow chart of a vehicle control method according to an embodiment of the present application;

[0029] Figure 2 is a schematic diagram of a vehicle control method according to an embodiment of the application;

[0030] Figure 3 is a structural block diagram of a vehicle control device according to an embodiment of the application. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the present application.

[0032] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] In the low-temperature parking power generation scenario of the range-extending electric vehicle, the power generation strategy in the related art faces severe challenges. The strategy requires the vehicle control unit (VCU) to instruct the integrated starter / generator (ISG) to enter the speed control mode, while the engine management system (EMS) remains in the torque response mode, to achieve the effective operation of the range extender and the power supply. However, at very low temperatures (for example, -20°C), the defects of this strategy begin to appear:

[0034] Under low temperature conditions, BMS imposes strict limits on the chargeable power of the whole vehicle, resulting in extremely limited available power generation, which can only cover the energy consumption of the low-voltage direct current to direct current converter (DCDC) and the power required by the PTC. In addition, in order to keep the engine speed stable, a part of power must be reserved for the ISG to adjust the speed.

[0035] If the power reserved for the ISG is too large, it means that the real available power generation of the whole vehicle is reduced, resulting in a decrease in charging torque. In this case, after the ISG adjusts the speed, the change in the generated torque is easy to cross zero, triggering continuous knocking between mechanical parts, producing annoying gear rattle, reducing the running smoothness of the vehicle and the comfort experience of the driver.

[0036] On the contrary, if the power reserved for the ISG is insufficient, the torque fluctuation of the engine in a low temperature environment or the slight change of PTC power can easily exceed the adjustment range of the ISG, causing the engine speed to be out of control and the phenomenon of fly speed to occur, thereby threatening the safety of the vehicle.

[0037] In more extreme cases, for example, when the PTC heater fails, the charging power of the whole vehicle will be sharply reduced to the consumption power level of the low-voltage end, about 1-2kW. At this time, the original power generation strategy cannot effectively balance the speed control and charging demand, the vehicle not only faces the double problems of gear rattle and fly speed, but also cannot start the range extender to provide the necessary heat source for the battery, eventually may lead to vehicle stop, that is, vehicle stranded, seriously affecting the reliability of the vehicle and the safety of the user.

[0038] According to the embodiment of the present application, a method embodiment of a vehicle control method 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 the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from here.

[0039] The method embodiments can be executed in an electronic device or similar computing device comprising a memory and a processor. Taking a computer terminal as an example, the computer terminal can include one or more processors (the processor can include, but is not limited to, a processing device such as a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a Digital Signal Processing (DSP) chip, a Micro Controller Unit (MCU), a Field Programmable Gate Array (FPGA), a Neural-network Processor Unit (NPU), a Tensor Processing Unit (TPU), an Artificial Intelligence (AI) type processor, etc.) and a memory for storing data. Optionally, the above computer terminal can also include a transmission device for communication function, an input and output device, and a display device. Those skilled in the art can understand that the above structural description is only illustrative, and does not limit the structure of the above computer terminal. For example, the computer terminal can include more or less components than the above structural description, or have a different configuration from the above structural description.

[0040] The memory can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the vehicle control method in the embodiments of the present application. The processor executes various functions and data processing by running the computer program stored in the memory, that is, implements the above-mentioned vehicle control method. The memory can include a high-speed random access memory, and can also include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some examples, the memory can further include a memory remotely arranged with respect to the processor, which can be connected to the mobile terminal through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0041] The transmission device is configured to receive or transmit data via a network. The network can include, for example, a wireless network provided by a mobile terminal's communication provider. In one example, the transmission device includes a network interface controller (NIC) that can connect to other network devices through a base station to communicate with the Internet. In one example, the transmission device can be a radio frequency (RF) module that is configured to communicate with the Internet via a wireless connection.

[0042] The display device can be, for example, a touch screen liquid crystal display (LCD) and a touch display (also referred to as a "touch screen" or "touch display screen"). The liquid crystal display can 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) that a user can interact with through finger contacts and / or gestures on the touch-sensitive surface. The user interactions can optionally include one or more of the following: creating a webpage, drawing, text editing, composing an email, playing a game, viewing a video, performing a search, making a telephone call, composing a text message, and / or any other function operable by a user using a touch screen.

[0043] A vehicle control method is provided in the embodiments of the present application, Figure 1 A flow chart of a vehicle control method according to the embodiments of the present application is shown in Figure 1 The flow chart includes the following steps:

[0044] In step S11, in response to the range extender of the target vehicle being in an activated state, initial state parameters of the target vehicle are acquired, wherein the initial state parameters are used to represent power generation mode information, battery cell temperature information and charging power information of the target vehicle in an initial state;

[0045] In step S12, a target power generation working condition corresponding to the target vehicle is determined based on the initial state parameters;

[0046] In step S13, a target power generation control strategy is determined using the target power generation working condition, wherein the target power generation control strategy is used to control the running state of a plurality of energy management components in the target vehicle;

[0047] In step S14, a power generation control operation is performed on the target vehicle based on the target power generation control strategy.

[0048] The initial state parameters are used to represent the power generation mode information, cell temperature information and charging power information of the target vehicle in the initial state, the power generation mode information is used to determine whether the target vehicle is in the parking power generation mode, and the cell temperature information represents the temperature data of the battery cells in the vehicle battery pack. The cell temperature is an important parameter for determining the BMS charging power limit and the generator power generation strategy. At low temperature (such as below-20℃), the BMS will reduce the charging power limit, which affects the available power generation power of the whole vehicle. The charging power information is the available power of the target vehicle, including the BMS charging power limit, low-voltage DCDC energy consumption and PTC heating power and other data. The various information in the initial state parameters jointly determine the actual charging capacity of the target vehicle in the current state, which is a key indicator of the whole vehicle energy management.

[0049] According to the initial state parameters, the target power generation working condition corresponding to the target vehicle can be identified. In the target power generation working condition, the available charging power of the target vehicle is extremely small, and there is a potential risk of PTC failure, which requires special power generation control strategy to overcome the knocking and fly speed problems in the traditional mode.

[0050] The target power generation control strategy is the power generation control strategy formulated by the VCU according to the initial state parameters. In the low-temperature parking power generation working condition, the target power generation control strategy will preferentially select the engine idle charging mode to solve the problem of insufficient power generation power and stability at low temperature.

[0051] When the range extender of the target vehicle starts, the VCU starts to collect the initial state parameters, including the power generation mode information, cell temperature information and charging power information. The VCU analyzes and judges the target power generation working condition corresponding to the target vehicle based on the collected initial state parameters, which specifically involves the evaluation of the cell temperature and charging power information to determine whether the idle power generation control strategy needs to be enabled. After determining the target power generation working condition, the VCU will formulate the target power generation control strategy according to the working condition. Finally, the VCU issues instructions to the energy management components (such as ISG and EMS) of the target vehicle according to the target power generation control strategy, and performs the corresponding power generation control operation to ensure the stability of the engine speed under low temperature conditions, while maximizing the charging efficiency and avoiding the occurrence of knocking and fly speed phenomenon.

[0052] Based on the steps S11 to S14, by responding to the initial state parameter of the target vehicle, the target vehicle is determined to be in the initial state parameter, and then the target vehicle is determined to be in the target power generation working condition based on the initial state parameter. The target power generation control strategy is determined by using the target power generation working condition, and finally the target vehicle is executed based on the target power generation control strategy. The power generation control operation can automatically identify and enter the target power generation working condition most suitable for the current environment according to the initial state parameter of the vehicle at the time of starting, so as to decouple the speed control and the charging power. No matter how the charging power changes, the stable control of the engine speed can be ensured, the knocking problem can be effectively avoided, and the charging efficiency is improved. The embodiments of the application aim to realize efficient energy management and stable power generation performance of the extended range vehicle under different working conditions, especially under low temperature and limited charging power, by using intelligent power generation control strategy, so as to avoid the problems of low power generation efficiency, knocking or fly speed in the traditional power generation strategy, and the risk of anchor in extreme working conditions. Finally, the technical effects of improving the energy utilization efficiency of the vehicle, improving the driving experience and enhancing the reliability of the system are achieved, and the technical problems of low energy utilization efficiency and poor reliability of the low-temperature parking power generation strategy in the related art are solved.

[0053] The vehicle control method in the embodiments of the application will be further introduced below.

[0054] In an optional embodiment, in step S12, determining the target power generation working condition corresponding to the target vehicle based on the initial state parameter comprises:

[0055] In response to the initial state parameter satisfying the first preset condition, the target power generation working condition is determined to be an idle power generation working condition; or,

[0056] In response to the initial state parameter not satisfying the first preset condition, the target power generation working condition is determined to be a normal power generation working condition.

[0057] The above idle power generation working condition is a power generation mode entered when the initial state parameter of the target vehicle satisfies the first preset condition. In this mode, the engine runs at idle speed, and the ISG is in torque control mode to execute the strategy of stable power generation torque. The idle power generation working condition is specially designed to overcome the problems of insufficient power generation and poor stability in low temperature environment, especially in the case of PTC heater failure, which can provide more stable power generation control, avoid knocking and fly speed phenomenon, and ensure normal battery heating and charging.

[0058] In contrast to the idle power generation working condition, the normal power generation working condition is a power generation mode adopted when the initial state parameter of the target vehicle does not satisfy the first preset condition. In the normal power generation working condition, the ISG may enter the speed control mode, and the EMS is in the torque response mode to realize efficient power generation of the range extender under non-low temperature or non-limited working condition.

[0059] When the VCU monitors that the target vehicle is in the parking power generation mode, and the initial battery temperature is lower than the first temperature threshold T1 and the available charging power Pwr_charge_limit of the vehicle is lower than the first power threshold Pwr1, that is, the initial state parameters satisfy the first preset condition, it is determined that the target power generation working condition is the idle power generation working condition. Thus, a series of control strategies optimized for low-temperature environments will be activated, including engine idle control and ISG torque control, to ensure stable power generation and speed regulation.

[0060] If the battery temperature and charging power information monitored by the VCU do not reach the threshold conditions of the low-temperature parking power generation, that is, the first preset condition is not satisfied, it is determined that the target power generation working condition is the normal power generation working condition, which means that the ISG and EMS will adopt the conventional control mode to adapt to the driving and charging conditions that are not in low temperature or the charging power is not limited.

[0061] Based on the above optional embodiments, by determining that the target power generation working condition is the idle power generation working condition in response to the initial state parameters satisfying the first preset condition, and determining that the target power generation working condition is the normal power generation working condition in response to the initial state parameters not satisfying the first preset condition, the problem of small available power generation of the vehicle in low-temperature environments and unstable power generation process is effectively solved, especially the knocking and fly speed phenomenon are eliminated, and the power generation efficiency and stability of energy management of the vehicle in low-temperature conditions are significantly improved.

[0062] In an optional embodiment, the first preset condition includes at least one of the following: determining that the target vehicle is in the parking power generation mode based on the power generation mode information, determining that the initial battery temperature of the target vehicle is less than or equal to the first temperature threshold based on the battery temperature information, and determining that the initial charging power of the target vehicle is less than or equal to the first power threshold based on the charging power information.

[0063] In the embodiments of the present application, through comprehensive consideration of the power generation mode information, the battery temperature information and the charging power information, accurate working condition identification and control strategy matching are realized. When the target vehicle is in the parking power generation mode, and the initial battery temperature is lower than or equal to the first temperature threshold T1, or the initial charging power is less than or equal to the first power threshold Pwr1, the idle power generation working condition is intelligently switched to, and the strategy of combining engine idle charging and ISG torque control is adopted, effectively solving the problems of knocking and fly speed caused by unstable power generation torque in low-temperature environments, while ensuring that the vehicle has sufficient charging power for battery heating and charging, and avoiding the risk of vehicle breakdown due to improper energy management. Based on the control mechanism of multiple parameter judgment, the flexibility and reliability of the extended-range vehicle in low-temperature environments are significantly enhanced, and the driving experience and safety of users in adverse weather conditions are improved.

[0064] In an alternative embodiment, at step S13, determining the target power generation control strategy using the target power generation operating condition comprises:

[0065] In response to the target power generation operating condition being an idle power generation operating condition, controlling the first energy management component to maintain a torque control mode at the target power generation torque, and controlling the second energy management component to switch to an idle control mode at the target idle speed.

[0066] The first energy management component is an ISG, which is a key energy conversion and management device in electric vehicles and extended-range vehicles, and has the ability to start the engine and charge the battery as a generator.

[0067] The target power generation torque refers to the stable power generation torque value set for the first energy management component in the idle power generation operating condition, denoted as -Tq1. The target power generation torque is calculated based on the current vehicle chargeable power Pwr_charge_limit and the target idle speed N1, ensuring the stability and efficiency of the power generation process under low temperature conditions.

[0068] The second energy management component is an EMS, which is responsible for managing the operation of the engine, including fuel injection, ignition control, emission control, etc., and controls the engine speed in the idle power generation operating condition to ensure stable operation of the engine.

[0069] The target idle speed N1 set for the second energy management component EMS in the idle power generation operating condition is determined based on environmental conditions and vehicle energy management requirements, aiming to ensure stable operation of the engine at minimum energy consumption while meeting the needs of battery heating and charging.

[0070] In the idle power generation condition of the embodiment of the present application, when the VCU sends a request signal to the EMS, the EMS will use the specified target power generation torque Tq1 as the power generation pre-torque in the idle control mode, that is, part of the accessory torque, and start to enter the idle control mode. The purpose of the above operation is to stabilize the engine speed under low temperature conditions and avoid tooth knocking and flying speed phenomena caused by power generation torque fluctuations. Subsequently, at the beginning of the idle control mode, the engine will adjust the torque according to Tq1 until the idle control state reaches a stable state. At this time, in order to further ensure the smoothness of the power generation process, the VCU will adjust and output Tq1 to the EMS and the integrated starter / generator ISG in real time according to the changes in the vehicle's rechargeable power Pwr_charelimit. In view of the limited anti-interference ability of the engine idle control and the fact that the vehicle power is prone to jump during actual operation, Tq1 can be designed as a stepped platform calibration curve, the horizontal axis of which represents the power generation power. In addition, a change slope limit is introduced to suppress the change rate of Tq1, thereby keeping Tq1 relatively stable throughout the entire idle power generation mode, avoiding unstable engine performance due to rapidly changing power generation torque, ensuring efficient and smooth engine idle power generation, and thus improving the overall performance and reliability of the energy management system.

[0071] Based on the above optional embodiments, by responding to the target power generation condition being the idle power generation condition, controlling the first energy management component to maintain the torque control mode according to the target power generation torque, and controlling the second energy management component to switch to the idle control mode according to the target idle speed, not only the power generation efficiency under low temperature conditions is improved and the normal heating and charging of the battery is ensured, but also through sophisticated energy management, the stability and reliability of the vehicle in harsh environments are enhanced, and the user's driving experience is significantly improved.

[0072] In an optional embodiment, in step S13, determining the target power generation control strategy using the target power generation operating condition includes:

[0073] In response to the target power generation condition being the normal power generation condition, the first energy management component is controlled to switch to the speed control mode according to the target speed, and the second energy management component is controlled to switch to the torque response mode according to the target torque adjustment parameter.

[0074] Normal power generation conditions refer to conditions where the vehicle is in non-low-temperature parking mode and the battery cell temperature and charging power information meet the vehicle's normal operating and charging requirements. Under normal power generation conditions, the vehicle's energy management system does not need to deal with the additional challenges posed by extremely low temperatures, allowing it to adopt a more optimized and efficient power generation strategy.

[0075] The target rotating speed is a rotating speed target value set for the first energy management component under a normal power generation condition. The target rotating speed is determined based on actual requirements of the vehicle, engine state, and battery charging efficiency, and the like, to ensure that the ISG can operate efficiently and stably under the rotating speed control mode.

[0076] The target torque adjustment parameter is a parameter for adjusting the engine torque output by the second energy management component according to a request of the vehicle controller VCU under the normal power generation condition. The torque adjustment parameter takes into account the battery charging requirement, engine efficiency and noise, vibration and harshness (NVH) performance, to ensure that the engine can respond to the torque requirement smoothly and efficiently under normal environmental conditions, and meet the charging and driving requirements of the vehicle.

[0077] The fine control strategy of the first energy management component under the normal power generation condition is different from the torque control mode under the low-temperature parking power generation condition. The rotating speed control mode allows the ISG to operate according to the target rotating speed, and can ensure the energy conversion efficiency between the engine and the ISG under normal conditions. The EMS switches to the torque response mode under the normal power generation condition, and can adjust the torque output of the engine in real time and accurately according to the target torque adjustment parameter issued by the vehicle controller VCU. Compared with the idle speed control mode, the torque management is more flexible and responds faster, and meets the high standard requirements for engine performance and efficiency under normal conditions.

[0078] Based on the above optional embodiment, by responding to the target power generation condition being a normal power generation condition, controlling the first energy management component to switch to the rotating speed control mode according to the target rotating speed, and controlling the second energy management component to switch to the torque response mode according to the target torque adjustment parameter, the energy management system of the extended-range vehicle is optimized under normal environmental conditions, and efficient cooperation between the ISG and the EMS is ensured, and the dynamic response capability and energy conversion efficiency of the engine are improved. By accurately controlling the rotating speed of the ISG and the torque output of the EMS, the vehicle performance is improved and the energy management is optimized under daily conditions in the embodiments of the application, which not only reduces energy loss, but also reduces the operating noise of the engine, improves the driving experience of the user and the overall performance of the vehicle.

[0079] In an optional embodiment, the vehicle control method in the embodiments of the application further includes:

[0080] The initial state parameter is updated to obtain a real-time state parameter, wherein the real-time state parameter is used to represent power generation mode information, cell temperature information and charging power information of the target vehicle under a real-time state;

[0081] In response to the real-time state parameter satisfying a second preset condition, it is determined that the target power generation condition is a normal power generation condition.

[0082] The real-time state parameters represent the current dynamic state information of the target vehicle, including the power generation mode information, the battery cell temperature information and the charging power information, and can reflect the energy management state of the vehicle and the external environmental conditions in real time, thereby providing a dynamic basis for the power generation condition determination in the embodiments of the present application. By obtaining and updating the power generation mode information, the battery cell temperature information and the charging power information in real time, the power generation condition can be flexibly adjusted according to the actual state of the vehicle and the environmental conditions, thereby ensuring the real-time performance and effectiveness of the energy management strategy.

[0083] The second preset condition is a set of threshold conditions for determining whether the target vehicle should be switched from the idle power generation condition to the normal power generation condition, and generally includes any one of the following: the vehicle exits the parking power generation mode, the battery cell temperature information is higher than a second temperature threshold T2, and the charging power information is greater than a second power threshold Pwr2.

[0084] The second preset condition enables the embodiments of the present application to automatically switch from the idle power generation condition to the normal power generation condition when the vehicle conditions improve, i.e., the battery cell temperature rises to T2 and the charging power increases to Pwr2 or above. The automatic switching mechanism not only improves the energy utilization efficiency, but also ensures that the engine and the ISG work under suitable conditions, avoids unnecessary energy loss and equipment wear and tear, and enhances the adaptability and stability of the extended-range vehicle under different conditions.

[0085] Based on the above optional embodiments, the real-time state parameters are obtained by updating the initial state parameters, and then the target power generation condition is determined to be the normal power generation condition in response to the real-time state parameters satisfying the second preset condition, thereby significantly improving the flexibility and efficiency of the energy management of the extended-range vehicle, enabling rapid response when the vehicle conditions change, ensuring smooth operation of the engine and the ISG under suitable conditions, and also providing users with a more intelligent and efficient energy use experience.

[0086] In an optional embodiment, the second preset condition includes at least one of the following: determining that the target vehicle is not in the parking power generation mode based on the power generation mode information, determining that the real-time battery cell temperature of the target vehicle is greater than or equal to a second temperature threshold based on the battery cell temperature information, and determining that the real-time charging power of the target vehicle is greater than or equal to a second power threshold based on the charging power information.

[0087] In the embodiments of the present application, by monitoring real-time state parameters including power generation mode information, real-time battery temperature information and real-time charging power information, intelligent judgment and switching of power generation conditions can be performed according to the second preset condition. When the target vehicle exits the parking power generation mode, or the real-time battery temperature information reaches or exceeds the second temperature threshold T2, or the real-time charging power information exceeds the second power threshold Pwr2, the embodiments of the present application will automatically determine that the target power generation condition is the normal power generation condition, thereby exiting the idle power generation mode at low temperature. Thus, it is ensured that the power generation strategy can be flexibly adjusted according to the changes of the actual operating state of the vehicle and the environmental conditions, avoiding the continued use of the inefficient power generation mode under unsuitable conditions, improving the energy utilization efficiency, optimizing the battery charging process, enhancing the operating stability of the engine and the ISG, and effectively improving the performance and user driving experience of the range-extended vehicle under different driving conditions. By introducing the monitoring of real-time state parameters and the comparison of preset conditions, the embodiments of the present application realize the dynamic optimization of power generation conditions, and bring significant improvement to the energy management system of the vehicle.

[0088] In an alternative embodiment, the first energy management component is a generator control component, and the second energy management component is an engine control component.

[0089] Figure 2 is a schematic diagram of a vehicle control method according to an embodiment of the present application, as shown in Figure 2 In response to the range extender of the target vehicle being in a starting state, the initial state parameters of the target vehicle are obtained, and the initial state parameters are used to represent the power generation mode information, the battery temperature information and the charging power information of the target vehicle in the initial state. If the initial state parameters satisfy the first preset condition, it is determined that the target power generation condition is the idle power generation condition, and if the initial state parameters do not satisfy the first preset condition, it is determined that the target power generation condition is the normal power generation condition. If the target power generation condition is the idle power generation condition, the first energy management component is controlled to maintain the torque control mode according to the target power generation torque, and the second energy management component is controlled to switch to the idle control mode according to the target idle speed. If the target power generation condition is the normal power generation condition, the first energy management component is controlled to switch to the speed control mode according to the target speed, and the second energy management component is controlled to switch to the torque response mode according to the target torque adjustment parameter. The initial state parameters are updated to obtain real-time state parameters, and if the real-time state parameters satisfy the second preset condition, it is determined that the target power generation condition is the normal power generation condition.

[0090] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of countries and regions, and provide corresponding operation portal for user to choose authorization or refusal.

[0091] According to an embodiment of the present application, a device embodiment of a vehicle control method is provided. It should be noted that the device can be used to execute the vehicle control method described above.

[0092] Figure 3 is a structural block diagram of a vehicle control device according to an embodiment of the present application, as shown in Figure 3 The device comprises:

[0093] The acquisition module 301 is configured to acquire initial state parameters of the target vehicle in response to the range extender of the target vehicle being in a starting state, wherein the initial state parameters are used to represent power generation mode information, battery temperature information and charging power information of the target vehicle in an initial state; the first determination module 302 is configured to determine a target power generation working condition corresponding to the target vehicle based on the initial state parameters; the second determination module 303 is configured to determine a target power generation control strategy by using the target power generation working condition, wherein the target power generation control strategy is used to control the component running state of a plurality of energy management components in the target vehicle; and the execution module 304 is configured to perform a power generation control operation on the target vehicle based on the target power generation control strategy.

[0094] Optionally, the first determination module 302 is further configured to: in response to the initial state parameters satisfying a first preset condition, determine that the target power generation working condition is an idle speed power generation working condition; or in response to the initial state parameters not satisfying the first preset condition, determine that the target power generation working condition is a normal power generation working condition.

[0095] Optionally, the first preset condition comprises at least one of the following: determining that the target vehicle is in a parking power generation mode based on the power generation mode information, determining that the initial battery temperature of the target vehicle is less than or equal to a first temperature threshold based on the battery temperature information, and determining that the initial charging power of the target vehicle is less than or equal to a first power threshold based on the charging power information.

[0096] Optionally, the second determination module 303 is further configured to: in response to the target power generation working condition being the idle speed power generation working condition, control the first energy management component to maintain a torque control mode according to a target power generation torque, and control the second energy management component to switch to an idle speed control mode according to a target idle speed.

[0097] Optionally, the second determining module 303 is further configured to: in response to the target power generation working condition being the normal power generation working condition, control the first energy management component to switch to the rotating speed control mode according to the target rotating speed, and control the second energy management component to switch to the torque response mode according to the target torque adjustment parameter.

[0098] Optionally, the vehicle control device further comprises an updating module 305 configured to update the initial state parameter to obtain a real-time state parameter, wherein the real-time state parameter is used to represent power generation mode information, battery cell temperature information and charging power information of the target vehicle in a real-time state; and the first determining module 302 is further configured to: in response to the real-time state parameter satisfying a second preset condition, determine that the target power generation working condition is the normal power generation working condition.

[0099] Optionally, the second preset condition comprises at least one of the following: determining that the target vehicle is not in the parking power generation mode based on the power generation mode information, determining that a real-time battery cell temperature of the target vehicle is greater than or equal to a second temperature threshold based on the battery cell temperature information, and determining that a real-time charging power of the target vehicle is greater than or equal to a second power threshold based on the charging power information.

[0100] Optionally, the first energy management component is a generator control component, and the second energy management component is an engine control component.

[0101] It should be noted that the above various modules can be implemented by software or hardware, and for the latter, the following implementation manners can be used, but are not limited thereto: all the above modules are located in the same processor; or the above various modules are located in different processors in any combination.

[0102] Embodiments of the present application also provide a vehicle, comprising: a memory storing an executable program; and a processor configured to run the program, wherein the program, when running, performs the method in any of the embodiments of the present application.

[0103] Optionally, in the present embodiment, the processor can be configured to perform the following steps by using the computer program:

[0104] S1, in response to a range extender of a target vehicle being in a starting state, obtaining initial state parameters of the target vehicle, wherein the initial state parameters are used to represent power generation mode information, battery cell temperature information and charging power information of the target vehicle in an initial state;

[0105] S2, determining a target power generation working condition corresponding to the target vehicle based on the initial state parameters;

[0106] S3, determining a target power generation control strategy by using the target power generation working condition, wherein the target power generation control strategy is used to control operating states of components corresponding to a plurality of energy management components in the target vehicle;

[0107] S4, performing power generation control operation on the target vehicle based on the target power generation control strategy.

[0108] Embodiments of the present application further provide a computer readable storage medium, which includes a stored executable program, wherein the computer readable storage medium controls a device where the computer readable storage medium is located to perform the method in each embodiment of the present application when the executable program is executed.

[0109] Optionally, in the embodiment, the storage medium can be configured to store a computer program for executing the following steps:

[0110] S1, in response to the range extender of the target vehicle being in a starting state, obtaining initial state parameters of the target vehicle, wherein the initial state parameters are used to represent power generation mode information, battery cell temperature information and charging power information of the target vehicle in an initial state;

[0111] S2, determining a target power generation working condition corresponding to the target vehicle based on the initial state parameters;

[0112] S3, determining a target power generation control strategy by using the target power generation working condition, wherein the target power generation control strategy is used to control the running state of a plurality of energy management components in the target vehicle;

[0113] S4, performing power generation control operation on the target vehicle based on the target power generation control strategy.

[0114] Embodiments of the present application further provide a computer program product, which includes a computer program, and the computer program implements the method in each embodiment of the present application when executed by a processor.

[0115] Embodiments of the present application further provide a computer program product, which includes a non-volatile computer readable storage medium, and the non-volatile computer readable storage medium is used to store a computer program, and the computer program implements the method in each embodiment of the present application when executed by a processor.

[0116] Embodiments of the present application further provide a computer program, and the computer program implements the method in each embodiment of the present application when executed by a processor.

[0117] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0118] In several embodiments provided in the present application, it should be understood that the disclosed technology can be implemented by other means. Among them, the above-mentioned device embodiments are only schematic, for example, the division of the units can be a logical function division, and actual implementation can have another division mode, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some interface, unit or module, which can be electrical or other forms.

[0119] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed to multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0120] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0121] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part of the prior art that contributes to the technical solutions or all or part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing 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 various program code storage media.

[0122] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A vehicle control method, characterized in that: include: In response to a range extender of a target vehicle being in an activated state, obtaining initial state parameters of the target vehicle, wherein the initial state parameters are used to represent power generation mode information, battery cell temperature information, and charging power information of the target vehicle in an initial state; Determining a target power generation operating condition corresponding to the target vehicle based on the initial state parameters; Determining a target power generation control strategy using the target power generation operating condition, wherein the target power generation control strategy is used to control component operating states corresponding to multiple energy management components in the target vehicle; A power generation control operation is performed on the target vehicle based on the target power generation control strategy.

2. The method according to claim 1, characterized in that Determining the target power generation operating condition corresponding to the target vehicle based on the initial state parameters includes: In response to the initial state parameter satisfying a first preset condition, determining that the target power generation operating condition is an idle power generation operating condition; or, In response to the initial state parameter not satisfying the first preset condition, the target power generation operating condition is determined to be a normal power generation operating condition.

3. The method according to claim 2, characterized in that The first preset condition includes at least one of the following: determining that the target vehicle is in a parking power generation mode based on the power generation mode information, determining that the initial battery cell temperature of the target vehicle is less than or equal to a first temperature threshold based on the battery cell temperature information, and determining that the initial charging power of the target vehicle is less than or equal to a first power threshold based on the charging power information.

4. The method according to claim 2, characterized in that Determining the target power generation control strategy using the target power generation operating condition includes: In response to the target power generation condition being the idle power generation condition, the first energy management component is controlled to maintain the torque control mode according to the target power generation torque, and the second energy management component is controlled to switch to the idle control mode according to the target idle speed.

5. The method according to claim 2, characterized in that Determining the target power generation control strategy using the target power generation operating condition includes: In response to the target power generation condition being the normal power generation condition, the first energy management component is controlled to switch to a speed control mode according to a target speed, and the second energy management component is controlled to switch to a torque response mode according to a target torque adjustment parameter.

6. The method according to claim 2, characterized in that The method further comprises: Updating the initial state parameters to obtain real-time state parameters, wherein the real-time state parameters are used to represent power generation mode information, battery cell temperature information, and charging power information of the target vehicle in real time; In response to the real-time state parameter satisfying a second preset condition, the target power generation operating condition is determined to be a normal power generation operating condition.

7. The method according to claim 6, characterized in that The second preset condition includes at least one of the following: determining that the target vehicle is not in the parking power generation mode based on the power generation mode information, determining that the real-time battery cell temperature of the target vehicle is greater than or equal to a second temperature threshold based on the battery cell temperature information, and determining that the real-time charging power of the target vehicle is greater than or equal to a second power threshold based on the charging power information.

8. The method according to claim 4 or 5, characterized in that The first energy management component is a generator control component, and the second energy management component is an engine control component.

9. A vehicle, characterized in that: include: a memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 1 to 8 when running.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 8.

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