Vehicle engine starting method and system, storage medium and hybrid vehicle

Abstract

The invention discloses a vehicle engine starting method and system, a storage medium and a hybrid vehicle, and relates to the technical field of vehicle control. When the current state is the driving state, the environment temperature of the vehicle and the real-time electric quantity of a power battery are obtained, and when the environment temperature and the real-time electric quantity meet the preset starting condition, the power battery is charged, so that the discharging power of the power battery meets the engine starting requirement; therefore, the problem that the engine cannot be started due to insufficient electric quantity is avoided; and when the current state is the standing state, responding to the emergency starting instruction, and switching the standard discharging power meter of the power battery into the emergency discharging power meter, so that the power battery discharges and starts the engine based on the emergency discharging power meter, and it is ensured that the engine can be effectively started under the condition that the electric quantity of the vehicle is insufficient. Smooth starting of the engine is ensured through intelligent energy management, and the reliability and adaptability of the vehicle are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a vehicle engine starting method, system, storage medium and hybrid vehicle. Background Art

[0002] New energy technologies are developing rapidly, and in the automotive field, the penetration rate of hybrid vehicles is growing steadily. The engine start of a hybrid vehicle requires the power battery to provide discharge power, so the discharge capacity of the power battery affects the engine start of the hybrid vehicle.

[0003] However, there are cases where users fail to pay attention to the power consumption of the power battery in a timely manner: for example, when the vehicle is driving, users fail to consider that the real-time power of the power battery may not meet the battery discharge power required for engine start, resulting in engine start failure; and in some special environments, the power battery cannot be charged: for example, when the hybrid vehicle is stationary for a long time in a low-temperature environment, the battery management system (BMS) of the power battery will start the battery protection mechanism based on the standard discharge power table to limit the discharge power of the power battery, which also causes the engine to fail to start. Therefore, the above situations limit users' daily use of hybrid vehicles. Summary of the invention

[0004] The main purpose of the present application is to provide a vehicle engine starting method, system, storage medium and hybrid vehicle, aiming to solve the technical problem that the hybrid vehicle fails to start due to the user's failure to pay attention to power consumption at all times and cannot be charged in special environments, thereby affecting the user's use of the vehicle.

[0005] To achieve the above objectives, the present application proposes a vehicle engine starting method, the vehicle engine starting method comprising:

[0006] Determine the current state of the vehicle;

[0007] When the current state is the driving state, obtaining the ambient temperature of the vehicle and the real-time power of the power battery, and when the ambient temperature and the real-time power meet the preset starting conditions, charging the power battery so that the discharge power of the power battery meets the engine starting requirement;

[0008] When the current state is a stationary state, in response to an emergency start instruction, the standard discharge power table of the power battery is switched to an emergency discharge power table, so that the power battery discharges based on the emergency discharge power table and starts the engine.

[0009] In one embodiment, when the ambient temperature and the real-time power level meet the preset starting conditions, the step of charging the power battery so that the discharge power of the power battery reaches the engine starting requirement includes:

[0010] Determine whether the ambient temperature is lower than the ambient temperature calibration value, and determine whether the real-time power is lower than the safety power calibration value;

[0011] When the ambient temperature is lower than the ambient temperature calibration value and the real-time power is lower than the safety power calibration value, it is determined that the ambient temperature and the real-time power meet the preset starting conditions, and the power battery is charged so that the discharge power of the power battery meets the engine starting requirement.

[0012] In one embodiment, the step of charging the power battery so that the discharge power of the power battery reaches the engine starting requirement includes:

[0013] Executing a forced charging strategy to charge the power battery;

[0014] When the real-time power level is higher than the safety power calibration value, it is determined that the discharge power of the power battery meets the engine starting requirement, and charging of the power battery is stopped.

[0015] In one embodiment, after the step of executing the forced charging strategy to charge the power battery, the method further includes:

[0016] When the user triggers a vehicle power-off request, a battery power warning message is generated to prompt the user that the discharge power of the power battery does not meet the engine starting requirement.

[0017] In one embodiment, in response to the emergency start instruction, the step of switching the standard discharge power table of the power battery to the emergency discharge power table so that the power battery discharges based on the emergency discharge power table and starts the engine includes:

[0018] Upon receiving an emergency start command triggered by a user, obtaining a current cumulative number of emergency starts of the vehicle;

[0019] Determine whether the current accumulated emergency start times is greater than a preset emergency start times;

[0020] When the current accumulated emergency start number is not greater than the preset emergency start number, the standard discharge power table of the power battery is switched to an emergency discharge power table, so that the power battery is discharged based on the emergency discharge power table and the engine is started.

[0021] In one embodiment, the step of switching the standard discharge power table of the power battery to the emergency discharge power table so that the power battery discharges based on the emergency discharge power table and starts the engine includes:

[0022] Emergency start warning information is generated according to the current accumulated emergency start times, and the standard discharge power table of the power battery is switched to the emergency discharge power table through the battery management system, so that the power battery discharges based on the emergency discharge power table and starts the engine.

[0023] In one embodiment, after the step of determining whether the current cumulative number of emergency activations is greater than the preset number of emergency activations, the following steps are included:

[0024] When the current accumulated emergency start times is greater than the preset emergency start times, an emergency start failure message is generated to prompt the user that the current accumulated emergency start times has exceeded the limit.

[0025] In addition, to achieve the above-mentioned purpose, the present application also proposes a vehicle engine starting system, the system comprising:

[0026] A state recognition module, used to determine the current state of the vehicle;

[0027] an active prevention module, configured to obtain the ambient temperature of the vehicle and the real-time power of the power battery when the current state is the driving state, and charge the power battery when the ambient temperature and the real-time power meet a preset starting condition, so that the discharge power of the power battery meets the engine starting requirement;

[0028] The passive emergency module is used to switch the standard discharge power table of the power battery to the emergency discharge power table in response to an emergency start instruction when the current state is a stationary state, so that the power battery discharges based on the emergency discharge power table and starts the engine.

[0029] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a vehicle engine starting program is stored. When the vehicle engine starting program is executed by a processor, the vehicle engine starting method as described above is implemented.

[0030] In addition, to achieve the above-mentioned purpose, the present application also proposes a hybrid vehicle, on which a vehicle control unit is installed, and the vehicle control unit includes: a memory, a processor, and a vehicle engine starting program stored in the memory and executable on the processor, and when the vehicle engine starting program is executed by the processor, the vehicle engine starting method described above is implemented.

[0031] The present application discloses a vehicle engine starting method, comprising: determining the current state of the vehicle; when the current state is a driving state, obtaining the ambient temperature of the vehicle and the real-time power of the power battery, and when the ambient temperature and the real-time power meet the preset starting conditions, charging the power battery so that the discharge power of the power battery meets the engine starting requirements; when the current state is a stationary state, in response to an emergency starting instruction, switching the standard discharge power table of the power battery to an emergency discharge power table, so that the power battery discharges based on the emergency discharge power table and starts the engine. The present application can charge the power battery in time when the vehicle is in a driving state and the ambient temperature of the vehicle and the real-time power of the power battery meet the preset starting conditions, thereby ensuring that the discharge efficiency of the power battery can start the engine normally, avoiding the problem of the engine failing to start due to insufficient battery power; when the vehicle is in a stationary state, the power battery is allowed to discharge based on the emergency discharge power table to start the engine, ensuring that the vehicle can effectively start the engine even when the power is insufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 A schematic diagram of the structure of a vehicle control unit of the hardware operating environment involved in the embodiment of the present application;

[0035] Figure 2 This is a flow chart of a first embodiment of a vehicle engine starting method of the present application;

[0036] Figure 3 This is a flow chart of a second embodiment of the vehicle engine starting method of the present application;

[0037] Figure 4 This is a logic flow chart of the execution of the active prevention strategy in the vehicle engine starting method of the present application;

[0038] Figure 5 This is a flow chart of a third embodiment of the vehicle engine starting method of the present application;

[0039] Figure 6 This is a logic flow chart for executing the passive emergency start strategy in the vehicle engine start method of this application;

[0040] Figure 7 This is a structural block diagram of the first embodiment of the vehicle engine starting system of the present application.

[0041] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0043] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the vehicle control unit of the hardware operating environment involved in the embodiment of the present application.

[0044] like Figure 1 As shown, the hybrid vehicle proposed in this embodiment may be installed with a vehicle control unit, and the vehicle control unit may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The wired interface of the user interface 1003 may be a USB interface in this application. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable memory (Non-volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0045] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the vehicle control unit, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0046] like Figure 1 As shown, the memory 1005 identified as a computer storage medium may include an operating system, a network communication module, a user interface module, and a vehicle engine starting program.

[0047] exist Figure 1In the vehicle control unit of the hybrid vehicle shown, the network interface 1004 is mainly used to connect to the background server and communicate data with the background server; the user interface 1003 is mainly used to connect to the user device; the vehicle control unit calls the vehicle engine start program stored in the memory 1005 through the processor 1001, and executes the vehicle engine start method provided in the embodiment of the present application.

[0048] The present application provides a vehicle engine starting method, referring to Figure 2 , Figure 2 This is a flow chart of a first embodiment of a vehicle engine starting method of the present application. In this embodiment, the method comprises: Steps S10 to S30:

[0049] Step S10: Determine the current state of the vehicle.

[0050] It should be noted that the method of this embodiment can be applied to the scenario of emergency starting of hybrid vehicles. The execution subject of the method of this embodiment can be a vehicle control unit (VCU) in a hybrid vehicle, or other vehicle control modules that can realize functions such as data processing, program running, and network communication. This embodiment does not limit this. Here, the above-mentioned VCU can be used as an example to illustrate this embodiment and the following embodiments.

[0051] It should be understood that the method of this embodiment can provide an emergency strategy for emergency engine start in extreme situations (for example, high altitude and low battery conditions). Based on this emergency strategy, the vehicle can be prevented from breaking down, greatly improving the vehicle's usability, comfort and safety.

[0052] It should be noted that the emergency strategy can cover two types of situations: one is the active prevention strategy when the hybrid vehicle is working normally (actively preventing the engine from failing to start next time when the temperature is low and the battery is low), and the other is the passive emergency start strategy after the vehicle has been stationary for a long time. Therefore, the current state of the hybrid vehicle can be determined first, which can be a driving state or a stationary state.

[0053] Step S20: When the current state is the driving state, the ambient temperature of the vehicle and the real-time power of the power battery are obtained, and when the ambient temperature and the real-time power meet the preset starting conditions, the power battery is charged so that the discharge power of the power battery meets the engine starting requirement.

[0054] It should be understood that when the current state is the driving state, the active prevention strategy can be executed. Specifically, it can be determined whether the start condition of the active prevention strategy is met according to the ambient temperature of the driving environment of the vehicle and the real-time power of the vehicle's own power battery.

[0055] It is understandable that an ambient temperature calibration value and a safety power calibration value may be pre-set as a judgment condition for the vehicle being in a high-cold and low-power situation, that is, as a start-up condition for the active prevention strategy. The ambient temperature calibration value may be set based on the ambient temperature of the area where the vehicle is used. For example, it may be set based on the coldest ambient temperature in the area where the vehicle is used in winter. The safety power calibration value may be obtained through a pre-calibration experiment process of the vehicle's power battery, and the safety power calibration value may also be represented by a battery voltage value.

[0056] In the specific implementation, when the vehicle's ambient temperature and real-time power meet the preset starting conditions, the engine is controlled to charge the power battery, and the power battery is charged to the safe power calibration value before the vehicle is completely powered off, so that the discharge power corresponding to the power battery at this power is sufficient to ensure that the vehicle can start the engine normally at an operating ambient temperature, avoiding the engine from failing to start and the vehicle breaking down in extreme situations such as high cold and low power.

[0057] Step S30: When the current state is a stationary state, in response to an emergency start instruction, the standard discharge power table of the power battery is switched to an emergency discharge power table, so that the power battery discharges based on the emergency discharge power table and starts the engine.

[0058] It should be understood that when the current state is a stationary state, a passive emergency start strategy can be executed. Specifically, in extreme cases, for example, when the vehicle is stationary in a cold environment for a long time, and the power battery cannot start the engine due to self-discharge and other factors, the user can press the emergency start button to make the vehicle enter the emergency start procedure.

[0059] It is understandable that the standard discharge power table is a chart of the maximum discharge power that the battery can provide under different battery conditions (such as different battery power levels, i.e., state of charge SOC, temperature, etc.), which can be stored in the BMS. Normally, the BMS controls the discharge of the power battery based on the standard discharge power table to prevent the power battery from over-discharging and damaging the battery performance and life.

[0060] It should be noted that the emergency discharge power meter can be based on the standard discharge power meter and the actual discharge capacity of the power battery, and can be set through calibration experiments under the premise of ensuring the safety and service life of the power battery. The emergency discharge power meter can also include the corresponding emergency discharge current and emergency discharge cut-off voltage.

[0061] Compared with the standard discharge power meter, the emergency discharge power meter can allow the power battery to provide higher discharge power at a lower temperature, and the emergency discharge cut-off voltage set in the emergency discharge power meter can be lower than the standard discharge cut-off voltage in the standard discharge power meter, thereby providing a wider discharge allowable range for the power battery.

[0062] In a specific implementation, when the vehicle is stationary in a high-cold environment for a long time, the user can trigger the emergency start program to switch the standard discharge power table of the power battery to the emergency discharge power table, so that the power battery discharges based on the emergency discharge power table to start the engine, thereby achieving emergency start of the vehicle.

[0063] This embodiment charges the power battery in time when the vehicle is in driving state and the ambient temperature of the vehicle and the real-time power of the power battery meet the preset starting conditions, thereby ensuring that the discharge efficiency of the power battery can normally start the engine and avoid the problem of the engine failing to start due to insufficient battery power; when the vehicle is in a stationary state, the power battery is allowed to discharge based on the emergency discharge power table to start the engine, ensuring that the vehicle can effectively start the engine even when the power is insufficient. Thus, it can adapt to different environmental conditions and vehicle states, ensure the smooth start of the engine through intelligent energy management, and improve the reliability and adaptability of the vehicle.

[0064] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 3 , Figure 3 This is a flow chart of a second embodiment of a vehicle engine starting method of the present application.

[0065] In this embodiment, in order to specifically illustrate the active prevention strategy that can be executed when the vehicle is in a driving state, step S20 specifically includes: steps S201-S202:

[0066] Step S201: determine whether the ambient temperature is lower than the ambient temperature calibration value, and determine whether the real-time power is lower than the safety power calibration value.

[0067] In a specific implementation, during the driving process of the vehicle, the ambient temperature of the vehicle can be compared with the ambient temperature calibration value in real time, and the real-time power of the power battery can be compared with the safety power calibration value.

[0068] Step S202: When the ambient temperature is lower than the ambient temperature calibration value and the real-time power is lower than the safety power calibration value, it is determined that the ambient temperature and the real-time power meet the preset starting conditions, and the power battery is charged so that the discharge power of the power battery meets the engine starting requirement.

[0069] It can be understood that when the ambient temperature is lower than the ambient temperature calibration value and the real-time power is lower than the safety power calibration value, the forced charging function of the vehicle energy management function module can be activated to ensure that the vehicle's engine is turned on at this time (the engine is forced to be turned on first when the vehicle is driving in pure electric mode) and control the engine to charge the power battery.

[0070] It should be understood that the power battery should be continuously charged before the vehicle is completely powered off until the real-time power level of the power battery is higher than the safety power rating. At this time, it can be determined that the discharge power that the power battery can provide meets the engine starting requirements, and charging of the power battery is stopped.

[0071] It should also be noted that during the charging process of the power battery, if the user triggers a vehicle power-off request, a battery power warning message is generated (for example, a flashing power warning sign is displayed on the vehicle dashboard) to remind the user that the discharge power of the power battery does not meet the engine start requirement, thereby preventing the vehicle from being directly powered off when the power battery is not charged to the safe power calibration value.

[0072] In addition, please refer to Figure 4 The execution logic of the active prevention strategy in this embodiment is described. Figure 4 This is a logic flow chart of the execution of the active prevention strategy in the vehicle engine starting method of the present application.

[0073] exist Figure 4 In the process of driving each time, if the ambient temperature of the vehicle is lower than the ambient temperature calibration value and the real-time power of the power battery is lower than the safety power calibration value, the forced charging function of the energy management function module in the vehicle is activated. The power battery is continuously charged until the real-time power of the power battery is higher than the safety power calibration value, and then the forced charging ends.

[0074] Based on the active prevention strategy of this embodiment, the discharge power corresponding to the real-time power of the power battery can be sufficient to ensure that the vehicle can start the engine normally at an operating ambient temperature, avoiding the engine from failing to start and the vehicle from breaking down in extreme situations such as high cold and low power (the situation where the power battery and electric drive can drive the vehicle has been eliminated, and the focus is on actively preventing the engine from failing to start for the first time).

[0075] This embodiment determines whether the ambient temperature is lower than the ambient temperature calibration value, and determines whether the real-time power is lower than the safety power calibration value; when the ambient temperature is lower than the ambient temperature calibration value and the real-time power is lower than the safety power calibration value, it determines that the ambient temperature and the real-time power meet the preset start-up conditions, and charges the power battery so that the discharge power of the power battery meets the engine start requirement. Compared with the traditional forced charging technology (mainly ensuring that the power is replenished to a certain set value under driving conditions, and the power is turned off when the power is turned off), the method of this embodiment focuses on making the battery discharge power of the vehicle at its ambient temperature sufficient to ensure the next successful engine start, ensuring that the vehicle does not break down during driving, can drive, and can normally enter the traditional vehicle forced charging process.

[0076] Based on the first and second embodiments of the present application, in the third embodiment of the present application, the same or similar contents as those of the first and second embodiments can be referred to the above description, and will not be described in detail later. Figure 5 , Figure 5 This is a flow chart of a third embodiment of a vehicle engine starting method of the present application.

[0077] In this embodiment, in order to specifically illustrate the passive emergency start strategy that can be executed when the vehicle is in a stationary state, step S30 specifically includes: steps S301 to S303:

[0078] Step S301: upon receiving an emergency start instruction triggered by a user, obtaining a current cumulative number of emergency starts of the vehicle.

[0079] It should be noted that in order to prevent users from over-relying on the emergency start function and to ensure the life of the power battery, the emergency start commands triggered by the user can be counted. The current cumulative number of emergency start commands is the total number of emergency start commands triggered during the entire life cycle of the vehicle after the user triggers this emergency start command.

[0080] Step S302: Determine whether the current accumulated emergency start times is greater than a preset emergency start times.

[0081] It should be understood that the preset number of emergency starts can be measured based on the battery capacity calibration of the power battery when the vehicle leaves the factory.

[0082] Step S303: When the current accumulated emergency start number is not greater than the preset emergency start number, the standard discharge power table of the power battery is switched to the emergency discharge power table, so that the power battery is discharged based on the emergency discharge power table and the engine is started.

[0083] It should be understood that when the current cumulative number of emergency starts is not greater than the preset number of emergency starts, emergency start warning information can be generated first based on the current cumulative number of emergency starts, and then the standard discharge power table of the power battery can be switched to an emergency discharge power table through the battery management system, so that the power battery can discharge based on the emergency discharge power table and start the engine.

[0084] It should be noted that the emergency start warning information can be displayed on the vehicle's dashboard to remind the user that the emergency start function of the vehicle has a limit on the number of times, thereby warning the user to reduce or avoid emergency start commands. And when the current cumulative number of emergency starts is greater than the preset number of emergency starts, an emergency start failure message can be generated to remind the user that the current cumulative number of emergency starts has exceeded the limit, and the emergency start command triggered by the user this time is rejected to ensure that the life of the power battery is not affected.

[0085] It is understandable that the BMS stores a standard discharge power table and an emergency discharge power table, which can be used to guide and limit the discharge power that the power battery can provide to the vehicle. By switching the standard discharge power table to the emergency discharge power table, the cut-off voltage of the power battery can be lowered, avoiding the situation where the BMS limits the discharge power of the battery when it enters the cut-off voltage zone due to insufficient power. This allows the power battery to provide the discharge power required for engine starting even when the power is at a low level, improving the user experience.

[0086] In addition, please refer to Figure 6 The execution logic of the passive emergency start strategy in this embodiment is described. Figure 6 This is a logic flow chart for executing the passive emergency start strategy in the vehicle engine starting method of this application.

[0087] exist Figure 6 In extreme cases, such as when the vehicle is stationary in a high-cold environment for a long time and the power battery is unable to start the engine due to self-discharge and other factors, the user can trigger the vehicle's emergency start switch to cause the emergency start switch to send a hard-wired signal (emergency start command) to the VCU, triggering a passive emergency start strategy. When the VCU receives the emergency start command, it can calculate the current cumulative number of emergency starts of the vehicle and determine whether it exceeds the standard; if it exceeds the standard, the emergency start command triggered by the user is rejected; if it does not exceed the standard, the emergency start command is sent to the BMS to switch the standard discharge power meter of the power battery to the emergency discharge power meter through the BMS, so that the power battery discharges based on the emergency discharge power meter, and then starts the engine to complete the emergency start of the vehicle.

[0088] This embodiment obtains the current cumulative emergency start times of the vehicle when receiving the emergency start command triggered by the user; determines whether the current cumulative emergency start times are greater than the preset emergency start times; and when the current cumulative emergency start times are not greater than the preset emergency start times, switches the standard discharge power meter of the power battery to the emergency discharge power meter, so that the power battery discharges based on the emergency discharge power meter and starts the engine. Thus, the power battery can provide the discharge power required for engine start even when the power is low, improving the user experience; and based on the limitation of the emergency start times, the life of the power battery can be ensured to be unaffected while kindly reminding customers to develop good vehicle use habits.

[0089] In addition, an embodiment of the present application further proposes a storage medium, on which a vehicle engine starting program is stored. When the vehicle engine starting program is executed by a processor, the vehicle engine starting method as described above is implemented.

[0090] In addition, the present application also provides a vehicle engine starting system, referring to Figure 7 , Figure 7 : is a structural block diagram of the first embodiment of the vehicle engine starting system of the present application; Figure 7 As shown, the system comprises:

[0091] A state identification module 701 is used to determine the current state of the vehicle;

[0092] The active prevention module 702 is used to obtain the ambient temperature of the vehicle and the real-time power of the power battery when the current state is the driving state, and charge the power battery when the ambient temperature and the real-time power meet the preset starting conditions, so that the discharge power of the power battery meets the engine starting requirement;

[0093] The passive emergency module 703 is used to switch the standard discharge power table of the power battery to the emergency discharge power table in response to an emergency start instruction when the current state is a stationary state, so that the power battery discharges based on the emergency discharge power table and starts the engine.

[0094] Furthermore, the active prevention module 702 is also used to determine whether the ambient temperature is lower than the ambient temperature calibration value, and to determine whether the real-time power is lower than the safety power calibration value; when the ambient temperature is lower than the ambient temperature calibration value and the real-time power is lower than the safety power calibration value, it is determined that the ambient temperature and the real-time power meet the preset starting conditions, and the power battery is charged so that the discharge power of the power battery meets the engine starting requirements.

[0095] Furthermore, the active prevention module 702 is also used to execute a forced charging strategy to charge the power battery; when the real-time power level is higher than the safety power calibration value, it is determined that the discharge power of the power battery meets the engine starting requirement, and charging of the power battery is stopped.

[0096] Furthermore, the active prevention module 702 is also used to generate a battery power warning message to prompt the user that the discharge power of the power battery does not meet the engine starting requirement when the user triggers a vehicle power-off request.

[0097] Furthermore, the passive emergency module 703 is also used to obtain the current cumulative emergency start number of the vehicle when receiving an emergency start command triggered by the user; determine whether the current cumulative emergency start number is greater than the preset emergency start number; when the current cumulative emergency start number is not greater than the preset emergency start number, switch the standard discharge power table of the power battery to the emergency discharge power table, so that the power battery discharges based on the emergency discharge power table and starts the engine.

[0098] Furthermore, the passive emergency module 703 is also used to generate emergency start warning information according to the current cumulative number of emergency starts, and switch the standard discharge power table of the power battery to the emergency discharge power table through the battery management system, so that the power battery discharges based on the emergency discharge power table and starts the engine.

[0099] Furthermore, the passive emergency module 703 is also used to generate emergency start failure information to prompt the user that the current cumulative emergency start number has exceeded the limit when the current cumulative emergency start number is greater than the preset emergency start number.

[0100] This embodiment charges the power battery in time when the vehicle is in driving state and the ambient temperature of the vehicle and the real-time power of the power battery meet the preset starting conditions, thereby ensuring that the discharge efficiency of the power battery can normally start the engine and avoid the problem of the engine failing to start due to insufficient battery power; when the vehicle is in a stationary state, the power battery is allowed to discharge based on the emergency discharge power table to start the engine, ensuring that the vehicle can effectively start the engine even when the power is insufficient. Thus, it can adapt to different environmental conditions and vehicle states, ensure the smooth start of the engine through intelligent energy management, and improve the reliability and adaptability of the vehicle.

[0101] Other embodiments or specific implementations of the vehicle engine starting system described in the present application can refer to the above-mentioned method embodiments and will not be repeated here.

[0102] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0103] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0104] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory image (ROM) / random access memory (RAM), a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0105] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle engine starting method, characterized in that: The method comprises: Determine the current state of the vehicle; When the current state is the driving state, obtaining the ambient temperature of the vehicle and the real-time power of the power battery, and when the ambient temperature and the real-time power meet the preset starting conditions, charging the power battery so that the discharge power of the power battery meets the engine starting requirement; When the current state is a stationary state, in response to an emergency start instruction, the standard discharge power table of the power battery is switched to an emergency discharge power table, so that the power battery discharges based on the emergency discharge power table and starts the engine.

2. The method according to claim 1, characterized in that The step of charging the power battery when the ambient temperature and the real-time power quantity meet the preset starting condition so that the discharge power of the power battery reaches the engine starting requirement includes: Determine whether the ambient temperature is lower than the ambient temperature calibration value, and determine whether the real-time power is lower than the safety power calibration value; When the ambient temperature is lower than the ambient temperature calibration value and the real-time power is lower than the safety power calibration value, it is determined that the ambient temperature and the real-time power meet the preset starting conditions, and the power battery is charged so that the discharge power of the power battery meets the engine starting requirement.

3. The method according to claim 2, characterized in that The step of charging the power battery so that the discharge power of the power battery reaches the engine starting requirement includes: Executing a forced charging strategy to charge the power battery; When the real-time power level is higher than the safety power calibration value, it is determined that the discharge power of the power battery meets the engine starting requirement, and charging of the power battery is stopped.

4. The method according to claim 3, characterized in that After the step of executing the forced charging strategy to charge the power battery, the method further includes: When the user triggers a vehicle power-off request, a battery power warning message is generated to prompt the user that the discharge power of the power battery does not meet the engine starting requirement.

5. The method according to claim 1, characterized in that The step of switching the standard discharge power table of the power battery to the emergency discharge power table in response to the emergency start instruction so that the power battery discharges based on the emergency discharge power table and starts the engine includes: Upon receiving an emergency start command triggered by a user, obtaining a current cumulative number of emergency starts of the vehicle; Determine whether the current accumulated emergency start times is greater than a preset emergency start times; When the current accumulated emergency start number is not greater than the preset emergency start number, the standard discharge power table of the power battery is switched to an emergency discharge power table, so that the power battery is discharged based on the emergency discharge power table and the engine is started.

6. The method according to claim 5, characterized in that The step of switching the standard discharge power table of the power battery to the emergency discharge power table so that the power battery discharges based on the emergency discharge power table and starts the engine includes: Emergency start warning information is generated according to the current accumulated emergency start times, and the standard discharge power table of the power battery is switched to the emergency discharge power table through the battery management system, so that the power battery discharges based on the emergency discharge power table and starts the engine.

7. The method according to claim 5, characterized in that After the step of determining whether the current cumulative number of emergency startups is greater than the preset number of emergency startups, the method further includes: When the current accumulated emergency start times is greater than the preset emergency start times, an emergency start failure message is generated to prompt the user that the current accumulated emergency start times has exceeded the limit.

8. A vehicle engine starting system, characterized in that: The system comprises: A state recognition module, used to determine the current state of the vehicle; an active prevention module, configured to obtain the ambient temperature of the vehicle and the real-time power of the power battery when the current state is the driving state, and charge the power battery when the ambient temperature and the real-time power meet a preset starting condition, so that the discharge power of the power battery meets the engine starting requirement; The passive emergency module is used to switch the standard discharge power table of the power battery to the emergency discharge power table in response to an emergency start instruction when the current state is a stationary state, so that the power battery discharges based on the emergency discharge power table and starts the engine.

9. A storage medium, characterized in that: The storage medium stores a vehicle engine starting program, and when the vehicle engine starting program is executed by the processor, the vehicle engine starting method according to any one of claims 1 to 7 is implemented.

10. A hybrid vehicle, characterized in that: The hybrid vehicle is equipped with a vehicle control unit, which includes: a memory, a processor, and a vehicle engine starting program stored in the memory and executable on the processor. When the vehicle engine starting program is executed by the processor, the vehicle engine starting method as described in any one of claims 1 to 7 is implemented.

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