Vehicle power limit reminder triggering method, device, controller, vehicle and medium

Abstract

The present invention relates to the technical field of automobile power systems, and discloses a vehicle power limit reminder triggering method, device, controller, vehicle and storage medium, which determines the vehicle power limit value of the target vehicle by obtaining the actual maximum output electric power of the target vehicle power system and the standard maximum output power of each power component in the power system when there is no fault in real time, and then determines to trigger the vehicle power limit reminder when the number of times the vehicle power limit value is less than the preset power limit threshold value within the preset target time meets the preset conditions. It can be seen that the present invention starts from the overall perspective of the target vehicle, and determines whether to trigger the vehicle power limit reminder according to the actual maximum output electric power and the standard maximum output electric power of the power system as a whole. Compared with judging whether to trigger the vehicle power limit reminder only by whether a single component fails, the purpose of improving the triggering accuracy of the vehicle power limit reminder of hybrid vehicles can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile power systems, and in particular to a vehicle power limit reminder triggering method, device, controller, vehicle and storage medium. Background Art

[0002] The existing hybrid vehicle power system usually includes engine, power battery, drive motor, generator, power coupling device and other components, which cooperate with each other to achieve the whole vehicle power output of the hybrid vehicle. When the whole vehicle power output of the hybrid vehicle is too low, the whole vehicle power limit reminder will be triggered.

[0003] The existing technology usually determines whether to trigger the vehicle power limit reminder based on the fault status of each component. When any one or more components fail, the vehicle power limit reminder is triggered. However, the failure of a component does not necessarily affect the power output of the hybrid vehicle. For example, if the engine Hall sensor fails, the real-time engine speed cannot be obtained, but the output power of the engine itself remains unchanged. At this time, it is possible that the vehicle power limit reminder is triggered because of the engine failure. In addition, when no component fails, due to extreme environmental reasons, such as high or low temperature environment, the vehicle output power of the hybrid vehicle may be severely limited, but since the component is not faulty, the vehicle power limit reminder will not be triggered.

[0004] Therefore, existing hybrid electric vehicles have the problem of low accuracy in triggering the vehicle power limit reminder. Summary of the invention

[0005] The embodiments of the present invention provide a vehicle power limit reminder triggering method, device, controller, vehicle and storage medium to solve the problem of low accuracy of vehicle power limit reminder triggering in existing hybrid electric vehicles.

[0006] A vehicle power limit reminder triggering method, comprising:

[0007] Acquire in real time the actual maximum output electric power of the power system of the target vehicle and the standard maximum output electric power of the power system, wherein the standard maximum output electric power of the power system is the maximum output electric power of the power system when all power components in the power system are fault-free;

[0008] Determining a vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time;

[0009] Determine whether the number of times that the vehicle power limit value is less than a preset power limit threshold value within a preset target time meets a preset condition;

[0010] If the preset conditions are met, it is determined that the vehicle power limit reminder is triggered.

[0011] In the above method, optionally, the power components in the power system include: an engine, a generator, a power battery, a drive motor and a power coupling device.

[0012] In the above method, optionally, the actual maximum output electric power of the power system is calculated by:

[0013] Obtaining the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator, the actual maximum output electric power of the power battery, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device;

[0014] Determining the actual maximum input electric power that can be input to the drive motor according to the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator and the actual maximum output electric power of the power battery;

[0015] The actual maximum output electric power of the power system is determined based on the actual maximum input electric power that can be input by the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

[0016] The above method, optionally, determining the actual maximum input electric power that can be input to the drive motor according to the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator and the actual maximum output electric power of the power battery, comprises:

[0017] Determining the actual comprehensive input mechanical power of the generator according to the actual maximum output mechanical power of the engine and the actual maximum input mechanical power of the generator;

[0018] The actual maximum input electric power that can be input to the drive motor is determined based on the actual comprehensive input mechanical power of the generator, the power generation efficiency of the generator and the actual maximum output electric power of the power battery.

[0019] In the above method, optionally, the target vehicle further includes a driving system, and the driving components in the driving system are other components except the engine, the generator, the power battery, the drive motor and the power coupling device, and the method further includes:

[0020] Acquiring fault information of each driving component in the driving system to determine whether a corresponding driving component fails according to the fault information;

[0021] If any one or more of the driving components fail, the limited electric power corresponding to each of the failed driving components is obtained, and the limited electric power is used to determine the actual maximum output electric power of the power system together with the actual maximum input electric power of the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

[0022] In the above method, optionally, the standard maximum output electric power of the power system is calculated by:

[0023] Obtaining the standard maximum output mechanical power of the engine, the standard maximum input mechanical power of the generator, the standard maximum output electric power of the power battery, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device;

[0024] Determining a standard comprehensive input mechanical power of the generator according to the standard maximum output mechanical power of the engine and the standard maximum input mechanical power of the generator;

[0025] Determining the standard maximum input electric power that can be input to the drive motor according to the standard comprehensive input mechanical power of the generator, the power generation efficiency of the generator and the standard maximum output electric power of the power battery;

[0026] The standard maximum output electric power of the power system is determined based on the standard maximum input electric power that can be input by the drive motor, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device.

[0027] A vehicle power limit reminder triggering device, comprising:

[0028] An electric power acquisition unit, used for acquiring in real time the actual maximum output electric power of the power system of the target vehicle and the standard maximum output electric power of the power system, wherein the standard maximum output electric power of the power system is the maximum output electric power of the power system when all power components in the power system are free of faults;

[0029] A power limit calculation unit, used to determine the vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time;

[0030] A power limit judgment unit, used to judge whether the number of times the vehicle power limit value is less than a preset power limit threshold value within a preset target time period satisfies a preset condition;

[0031] The alarm unit is used to determine and trigger the vehicle power limit reminder when the preset conditions are met.

[0032] A controller comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the vehicle power limit reminder triggering method as described in any one of the above items is implemented.

[0033] A vehicle comprises the controller described above.

[0034] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the vehicle power limit reminder triggering method as described in any one of the above items is implemented.

[0035] The above-mentioned vehicle power limit reminder triggering method, device, controller, vehicle and storage medium determine the vehicle power limit value of the target vehicle by obtaining the actual maximum output power of the target vehicle power system and the standard maximum output power of each power component in the power system when there is no fault in real time, and then determine to trigger the vehicle power limit reminder when the number of times the vehicle power limit value is less than the preset power limit threshold value within the preset target time meets the preset conditions. It can be seen that the present invention starts from the overall perspective of the target vehicle and determines whether to trigger the vehicle power limit reminder based on the actual maximum output power and the standard maximum output power of the power system as a whole. Compared with judging whether to trigger the vehicle power limit reminder only by whether a single component fails, the purpose of improving the triggering accuracy of the vehicle power limit reminder of hybrid vehicles can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0037] Figure 1 This is a flow chart for implementing a vehicle power limit reminder triggering method disclosed in an embodiment of the present invention;

[0038] Figure 2 It is a partial implementation flow chart of a vehicle power limit reminder triggering method disclosed in an embodiment of the present invention;

[0039] Figure 3 It is a partial implementation flow chart of a vehicle power limit reminder triggering method disclosed in an embodiment of the present invention;

[0040] Figure 4 It is a partial implementation flow chart of a vehicle power limit reminder triggering method disclosed in an embodiment of the present invention;

[0041] Figure 5 It is a partial implementation flow chart of a vehicle power limit reminder triggering method disclosed in an embodiment of the present invention;

[0042] Figure 6 It is a structural schematic diagram of a vehicle power limit reminder triggering device disclosed in an embodiment of the present invention;

[0043] Figure 7 It is a structural schematic diagram of a controller disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0046] It should also be understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0047] As used in the present specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]", depending on the context.

[0048] In addition, in the description of the present specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0049] References to "one embodiment" or "some embodiments" etc. described in the present specification mean that one or more embodiments of the present invention include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0050] The present invention discloses a vehicle power limit reminder triggering method, device, controller, vehicle and storage medium, which determines the vehicle power limit value of the target vehicle by obtaining the actual maximum output power of the target vehicle power system and the standard maximum output power of each power component in the power system when there is no fault in real time, and then determines to trigger the vehicle power limit reminder when the number of times the vehicle power limit value is less than the preset power limit threshold value within the preset target time meets the preset conditions. It can be seen that the present invention starts from the overall perspective of the target vehicle, and determines whether to trigger the vehicle power limit reminder according to the actual maximum output power and the standard maximum output power of the power system as a whole. Compared with judging whether to trigger the vehicle power limit reminder only by whether a single component fails, the purpose of improving the triggering accuracy of the vehicle power limit reminder of hybrid vehicles can be achieved.

[0051] like Figure 1 FIG. 1 is a flowchart of a method for triggering a vehicle power limit reminder disclosed in an embodiment of the present invention. The method may specifically include the following steps:

[0052] S101: Acquire the actual maximum output electric power of the target vehicle power system and the standard maximum output electric power of the power system in real time.

[0053] Among them, the standard maximum output electric power of the power system is the maximum output electric power of the power system when all power components in the power system are fault-free.

[0054] In one embodiment, the standard maximum output electric power of the power system may be the maximum output electric power obtained by testing the target vehicle when the target vehicle leaves the factory.

[0055] In one embodiment, the actual maximum output electric power of the power system is the maximum output electric power that the power system of the target vehicle can currently output.

[0056] S102: Determine the vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time.

[0057] The actual maximum output electric power of the power system and the standard maximum output electric power of the power system are input into the vehicle power limit calculation formula to obtain the vehicle power limit value of the target vehicle.

[0058] The vehicle power limit calculation formula can be shown as follows:

[0059]

[0060] Among them, P S Indicates the actual maximum output power of the power system, P B represents the standard maximum output power of the power system, and O represents the vehicle power limit value of the target vehicle. In other words, the vehicle power limit value is the ratio of the actual maximum output power of the power system to the standard maximum output power of the power system.

[0061] S103: Determine whether the number of times that the vehicle power limit value is less than a preset power limit threshold value within a preset target time period satisfies a preset condition.

[0062] If the number of times the vehicle's power limit value is less than the preset power limit threshold within the preset target time meets the preset conditions, it is determined that the vehicle's power limit reminder is triggered. If the number of times the vehicle's power limit value is less than the preset power limit threshold within the preset target time does not meet the preset conditions, it is determined that the vehicle's power limit reminder is not triggered.

[0063] In one embodiment, the preset condition in this embodiment can be that within the preset target duration, the vehicle power limit values ​​are all less than the preset power limit threshold. That is to say, within the preset target duration, all vehicle power limit values ​​calculated continuously need to be less than the power limit threshold before the vehicle power limit reminder is triggered. If within the preset target duration, the calculated vehicle power limit value is less than the power limit threshold at least once, the vehicle power limit reminder is not triggered.

[0064] For example, when the calculated vehicle power limit value is less than the power limit threshold, timing starts according to the preset target duration, such as forward timing or countdown. If during the timing process, that is, before the end of the timing, there is a calculated vehicle power limit value that is equal to or greater than the power limit threshold, then the timing ends. When the next calculated vehicle power limit value is less than the power limit threshold, timing is started again according to the preset target duration, and so on, until the timing process, until the end of the timing, there is no calculated vehicle power limit value that is equal to or greater than the power limit threshold, and the vehicle power limit reminder is triggered.

[0065] In one embodiment, the preset condition in this embodiment may be that within the preset target duration, the number of times that the vehicle power limit value is less than the preset power limit threshold exceeds the preset number threshold. That is to say, within the preset target duration, the vehicle power limit value is continuously calculated and compared with the power limit threshold, and the number of times that the vehicle power limit value is less than the power limit threshold is accumulated. Within the target duration, if the number of times that the vehicle power limit value is less than the power limit threshold is greater than the preset number threshold, it is determined that the vehicle power limit reminder is triggered. Conversely, within the target duration, if the number of times that the vehicle power limit value is less than the power limit threshold is less than the preset number threshold, the vehicle power limit reminder is not triggered, wherein the preset number threshold may be a continuous number, that is, the number of times the calculated vehicle power limit value is less than the power limit threshold must be continuous, or the preset number threshold may also be a discontinuous number, that is, the number of times that the vehicle power limit value is less than the power limit threshold within the target duration exceeds the number threshold.

[0066] For example, when the calculated vehicle power limit value is less than the power limit threshold, the timing starts according to the preset target duration. If at the end of the timing, the cumulative number of times the vehicle power limit value is less than the power limit threshold exceeds the preset number threshold, the vehicle power limit reminder is triggered. If at the end of the timing, the cumulative number of times the vehicle power limit value is less than the power limit threshold does not exceed the preset number threshold, the vehicle power limit reminder is not triggered, and the next time the calculated vehicle power limit value is less than the power limit threshold, the timing starts again according to the preset target duration, and the cumulative number of times the vehicle power limit value is less than the power limit threshold, and so on, until at the end of the timing, the cumulative number of times the vehicle power limit value is less than the power limit threshold exceeds the preset number threshold, and the vehicle power limit reminder is triggered.

[0067] It should be understood that the method for determining the triggering of the vehicle power limit reminder in the above embodiment is only part of the implementation method in this embodiment. In this embodiment, the triggering of the vehicle power limit reminder can also be achieved by other methods. For example, when the calculated vehicle power limit value is less than the power limit threshold, the number of consecutive cumulative vehicle power limit values ​​less than the power limit threshold, if the consecutive cumulative number of times exceeds the preset number threshold, the vehicle power limit reminder is triggered. Based on this, in this embodiment, the implementation method of determining whether to trigger the vehicle power limit reminder based on the vehicle power limit value and the power limit threshold is not limited.

[0068] S104: If the preset conditions are met, determine to trigger the vehicle power limit reminder.

[0069] Among them, the vehicle power limit reminder method includes but is not limited to one or more of voice reminder, graphic reminder, and sound and light reminder.

[0070] In one embodiment, the voice reminder in this embodiment can be implemented through the vehicle audio system in the target vehicle. When the vehicle power limit reminder is triggered, the preset reminder music or reminder voice is played through the vehicle audio system, wherein the reminder music and reminder voice can be set according to actual needs, or the default reminder voice or reminder music of the target vehicle can be used. In this embodiment, the content of the reminder music or reminder voice is not limited.

[0071] In one embodiment, the graphic reminder in this embodiment can be displayed through the instrument or central control display screen of the target vehicle. When the vehicle power limit reminder is triggered, the specified graphic, such as the vehicle power limit logo and the vehicle power limit text, is displayed through the instrument or central control display screen.

[0072] In one embodiment, the voice reminder in this embodiment can be implemented through one or more of the instrument panel, central control display or ambient light in the target vehicle. When the vehicle power limit reminder is triggered, an audible and visual alarm is issued through one or more of the instrument panel, central control display or ambient light.

[0073] It should be noted that when the vehicle power limit reminder is triggered in this embodiment, the vehicle power limit reminder can be provided through one or more of voice reminder, graphic reminder, and sound and light reminder, which is not limited in this embodiment.

[0074] In summary, the present invention discloses a method for triggering a vehicle power limit reminder, which obtains the actual maximum output power of the target vehicle power system and the standard maximum output power of each power component in the power system when there is no fault in real time, so as to determine the vehicle power limit value of the target vehicle according to the actual maximum output power of the power system and the standard maximum output power of the power system obtained each time, and then within the preset target time, when the number of times the vehicle power limit value is less than the preset power limit threshold meets the preset conditions, it is determined to trigger the vehicle power limit reminder. It can be seen that the present invention starts from the overall perspective of the target vehicle, and judges whether to trigger the vehicle power limit reminder according to the actual maximum output power and the standard maximum output power of the power system as a whole. Compared with judging whether to trigger the vehicle power limit reminder only by whether a single component fails, the purpose of improving the accuracy of the vehicle power limit reminder triggering of hybrid vehicles can be achieved.

[0075] In one embodiment, the power components in the power system of this embodiment include: an engine, a generator, a power battery, a drive motor and a power coupling device. On this basis, the actual maximum output power of the power system of this embodiment can be calculated as follows: Figure 2 As shown:

[0076] S201: Obtaining the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator, the actual maximum output electric power of the power battery, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

[0077] It should be understood that the power components such as the engine, generator, power battery, drive motor and power coupling device all have corresponding electronic control units ECU, and the electronic control units are used to perform self-checks to obtain the actual maximum output electrical power or actual maximum output mechanical power of these power components. Among them, the electronic control unit of the engine is the engine management system EMS, the electronic control unit of the power battery is the power battery management system BMS, the electronic control unit of the drive motor is the drive motor control unit DCU, the electronic control unit of the generator is the generator control unit GCU, and the electronic control unit of the power coupling device is the coupling controller CCU. Therefore, the actual maximum output electrical power or actual maximum output mechanical power of each power component can be obtained through the electronic control units of each power component.

[0078] S202: Determine the actual maximum input electric power that can be input to the drive motor according to the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator and the actual maximum output electric power of the power battery.

[0079] It should be understood that the engine can drive the generator to generate electricity to power the drive motor. At the same time, the power battery can also directly power the drive motor. That is to say, the actual maximum input electric power that the drive motor can input is the sum of the actual maximum output electric power of the power battery and the actual maximum output electric power of the generator.

[0080] In one embodiment, the actual maximum input electric power that the drive motor can input can be calculated by the following steps: Figure 3 As shown:

[0081] S301: Determine the actual comprehensive input mechanical power of the generator according to the actual maximum output mechanical power of the engine and the actual maximum input mechanical power of the generator.

[0082] It should be understood that when the actual maximum input mechanical power of the generator is constant, no matter how large the actual maximum output mechanical power of the engine is, the actual comprehensive input mechanical power of the generator will not exceed the actual maximum input mechanical power of the generator.

[0083] Specifically, in this embodiment, the actual comprehensive input mechanical power of the generator can be determined by judging whether the actual maximum output mechanical power of the engine is greater than the actual maximum input mechanical power of the generator. If the actual maximum output mechanical power of the engine is greater than the actual maximum input mechanical power of the generator, it is determined that the actual comprehensive input mechanical power of the generator is equal to the actual maximum input mechanical power of the generator; if the actual maximum output mechanical power of the engine is less than the actual maximum input mechanical power of the generator, it is determined that the actual comprehensive input mechanical power of the generator is equal to the actual maximum output mechanical power of the engine.

[0084] S302: Determine the actual maximum input electric power that can be input to the drive motor according to the actual comprehensive input mechanical power of the generator, the power generation efficiency of the generator and the actual maximum output electric power of the power battery.

[0085] The actual maximum output electric power of the generator is obtained by multiplying the actual comprehensive input mechanical power of the generator by the power generation efficiency of the generator. The actual maximum output electric power of the generator and the actual maximum output electric power of the power battery are summed to obtain the actual maximum input electric power that the drive motor can input.

[0086] To sum up, in this embodiment, the actual maximum input electric power that can be input to the drive motor is comprehensively calculated based on the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator and the actual maximum output electric power of the power battery. This has higher accuracy than obtaining the actual maximum input electric power of the direct drive motor.

[0087] S203: Determine the actual maximum output electric power of the power system according to the actual maximum input electric power that can be input by the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

[0088] The actual maximum input electric power that can be input to the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum input electric power with the smallest electric power among the actual maximum output electric power of the power coupling device are obtained as the actual maximum output electric power of the power system.

[0089] Determine which of the actual maximum input electric power that can be input by the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device is the smallest, and select the smallest actual maximum input electric power among the actual maximum input electric power that can be input by the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device as the actual maximum output electric power of the power system.

[0090] If the actual maximum input electric power that can be input by the drive motor is less than the actual maximum output electric power of the drive motor and the actual maximum output electric power of the power coupling device, then, without considering power loss, it is determined that the actual maximum output electric power of the power system is equal to the actual maximum input electric power that can be input by the drive motor; if the actual maximum output electric power of the drive motor is less than the actual maximum input electric power that can be input by the drive motor and the actual maximum output electric power of the power coupling device, then it is determined that the actual maximum output electric power of the power system is equal to the actual maximum output electric power of the drive motor; if the actual maximum output electric power of the power coupling device is less than the actual maximum input electric power that can be input by the drive motor and the actual maximum output electric power of the drive motor, then it is determined that the actual maximum output electric power of the power system is equal to the actual maximum output electric power of the power coupling device.

[0091] To summarize, in this embodiment, the actual maximum output electric power of the power system is calculated based on the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator, the actual maximum output electric power of the power battery, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device. This has higher accuracy than directly obtaining the actual maximum output electric power of the power coupling device as the actual maximum output electric power of the power system.

[0092] Based on Figure 2 In the specific implementation, the target vehicle in this embodiment also includes a driving system, and the driving components in the driving system are other components except the engine, generator, power battery, drive motor and power coupling device. On this basis, this embodiment also includes the following steps, such as Figure 4 As shown:

[0093] S204: Acquire fault information of each driving component in the driving system to determine whether a corresponding driving component fails according to the fault information.

[0094] The fault information at least indicates whether a corresponding driving component fails.

[0095] In one embodiment, the driving components in the driving system of this embodiment include but are not limited to the gearbox, chassis, steering wheel, brakes, etc., and self-checking is performed through the gearbox controller TCU corresponding to the gearbox, the lifting controller corresponding to the chassis, the steering controller corresponding to the steering wheel, the electronic booster corresponding to the brake, etc., to obtain the fault information of each driving component in the driving system. It should be understood that during the driving process of the vehicle, if any of the driving components such as the gearbox, chassis, steering wheel, brake, etc. fails, although it will not directly affect the actual maximum output power of the target vehicle, it will cause the target vehicle to have safety hazards and even fail to drive normally. Therefore, when a driving component fails, the driver can be reminded to slow down or pull over and wait for rescue by triggering the vehicle power limit reminder.

[0096] In one embodiment, whether the driving component fails includes, but is not limited to, aging of the driving component due to long-term use, damage to the driving component resulting in loss of function, etc. For example, failure of the electronic booster results in a longer braking distance.

[0097] S205: If any one or more driving components fail, obtain the limited electric power corresponding to each failed driving component. The limited electric power is used to determine the actual maximum output electric power of the power system by combining the actual maximum input electric power of the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

[0098] It should be understood that when a driving component fails, the probability of an accident occurring when the target vehicle is driving at high speed will greatly increase. Therefore, the limited electric power corresponding to the failed driving component is generally much smaller than the actual maximum output electric power of the power system of the target vehicle during normal driving.

[0099] When only one driving component fails, the limited electric power corresponding to the driving component is obtained; if two driving components fail, the first limited electric power corresponding to one of the driving components and the second limited electric power corresponding to the other driving component are obtained, and so on. The more driving components fail, the more limited electric powers are obtained, and the limited electric powers corresponding to different driving components may be different.

[0100] Determine which electric power is the smallest among the limited electric power, the actual maximum input electric power that can be input by the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device, and select the smallest actual maximum input electric power among the limited electric power, the actual maximum input electric power that can be input by the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device as the actual maximum output electric power of the power system.

[0101] If the actual maximum input electric power that can be input by the drive motor is less than the limiting electric power, the actual maximum output electric power of the drive motor and the actual maximum output electric power of the power coupling device, then, without considering power loss, it is determined that the actual maximum output electric power of the power system is equal to the actual maximum input electric power that can be input by the drive motor; if the actual maximum output electric power of the drive motor is less than the limiting electric power, the actual maximum input electric power that can be input by the drive motor and the actual maximum output electric power of the power coupling device, then it is determined that the actual maximum output electric power of the power system is equal to the actual maximum output electric power of the drive motor; if the actual maximum output electric power of the power coupling device is less than the limiting electric power, the actual maximum input electric power that can be input by the drive motor and the actual maximum output electric power of the drive motor, then it is determined that the actual maximum output electric power of the power system is equal to the actual maximum output electric power of the power coupling device; if the limiting electric power is less than the actual maximum output electric power of the power coupling device, the actual maximum input electric power that can be input by the drive motor and the actual maximum output electric power of the drive motor, then it is determined that the actual maximum output electric power of the power system is equal to the limiting electric power.

[0102] In summary, in this embodiment, on the basis of calculating the actual maximum output electric power of the power components in the power system of the target vehicle, the impact of the driving components of the target vehicle on the target vehicle when a failure occurs is also taken into account, which effectively improves the rationality and comprehensiveness of the triggering of the vehicle power limit reminder.

[0103] In one embodiment, the power components in the power system of this embodiment include: an engine, a generator, a power battery, a drive motor and a power coupling device. On this basis, the standard maximum output power of the power system of this embodiment can be calculated as follows: Figure 5 As shown:

[0104] S501: Obtain the standard maximum output mechanical power of the engine, the standard maximum input mechanical power of the generator, the standard maximum output electric power of the power battery, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device.

[0105] Among them, the standard maximum output mechanical power of the engine is the maximum mechanical power that the engine can output when there is no fault in the engine, the standard maximum input mechanical power of the generator is the maximum mechanical power that can be input when the generator is free of faults, the standard maximum output electric power of the power battery is the maximum electric power that the power battery can output when there is no fault in the power battery, the standard maximum output electric power of the drive motor is the maximum electric power that can be output when the drive motor is free of faults, and the standard maximum output electric power of the power coupling device is the maximum electric power that can be output when there is no fault in the power coupling device.

[0106] In one embodiment, the standard maximum output mechanical power of the engine, the standard maximum input mechanical power of the generator, the standard maximum output electrical power of the power battery, the standard maximum output electrical power of the drive motor, and the standard maximum output electrical power of the power coupling device can be power values ​​obtained by pre-testing the engine, generator, power battery, drive motor, and power coupling device before they leave the factory.

[0107] S502: Determine a standard comprehensive input mechanical power of the generator according to the standard maximum output mechanical power of the engine and the standard maximum input mechanical power of the generator.

[0108] It should be understood that when the standard maximum input mechanical power of the generator is constant, no matter how large the standard maximum output mechanical power of the engine is, the standard comprehensive input mechanical power of the generator will not exceed the standard maximum input mechanical power of the generator.

[0109] Specifically, in this embodiment, the standard comprehensive input mechanical power of the generator can be determined by judging whether the standard maximum output mechanical power of the engine is greater than the standard maximum input mechanical power of the generator. If the standard maximum output mechanical power of the engine is greater than the standard maximum input mechanical power of the generator, it is determined that the standard comprehensive input mechanical power of the generator is equal to the standard maximum input mechanical power of the generator; if the standard maximum output mechanical power of the engine is less than the standard maximum input mechanical power of the generator, it is determined that the standard comprehensive input mechanical power of the generator is equal to the standard maximum output mechanical power of the engine.

[0110] S503: Determine the standard maximum input electric power that can be input to the drive motor according to the standard comprehensive input mechanical power of the generator, the power generation efficiency of the generator and the standard maximum output electric power of the power battery.

[0111] Multiply the standard comprehensive input mechanical power of the generator by the generator's power generation efficiency to obtain the standard maximum output electric power of the generator. Sum the standard maximum output electric power of the generator and the standard maximum output electric power of the power battery to obtain the standard maximum input electric power that the drive motor can input.

[0112] S504: Determine the standard maximum output electric power of the power system according to the standard maximum input electric power that can be input by the drive motor, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device.

[0113] The standard maximum input electric power that can be input to the drive motor, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device are obtained as the standard maximum output electric power of the power system.

[0114] Determine which electric power is the smallest among the standard maximum input electric power that can be input by the drive motor, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device, and select the smallest standard maximum input electric power among the standard maximum input electric power that can be input by the drive motor, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device as the standard maximum output electric power of the power system.

[0115] If the standard maximum input electric power that can be input by the drive motor is less than the standard maximum output electric power of the drive motor and the standard maximum output electric power of the power coupling device, then, without considering power loss, the standard maximum output electric power of the power system is determined to be equal to the standard maximum input electric power that can be input by the drive motor; if the standard maximum output electric power of the drive motor is less than the standard maximum input electric power that can be input by the drive motor and the standard maximum output electric power of the power coupling device, then the standard maximum output electric power of the power system is determined to be equal to the standard maximum output electric power of the drive motor; if the standard maximum output electric power of the power coupling device is less than the standard maximum input electric power that can be input by the drive motor and the standard maximum output electric power of the drive motor, then the standard maximum output electric power of the power system is determined to be equal to the standard maximum output electric power of the power coupling device.

[0116] To summarize, in this embodiment, the standard maximum output electric power of the power system is calculated according to the standard maximum output mechanical power of the engine, the standard maximum input mechanical power of the generator, the standard maximum output electric power of the power battery, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device. This is beneficial to improving the accuracy of the vehicle power limit reminder compared to directly obtaining the standard maximum output electric power of the power coupling device as the standard maximum output electric power of the power system.

[0117] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0118] like Figure 6 FIG. 1 is a schematic diagram of a vehicle power limit reminder triggering device disclosed in an embodiment of the present invention. The device may specifically include the following units:

[0119] The electric power acquisition unit 601 is used to acquire the actual maximum output electric power of the power system of the target vehicle and the standard maximum output electric power of the power system in real time. The standard maximum output electric power of the power system is the maximum output electric power of the power system when all power components in the power system are fault-free.

[0120] The power limit calculation unit 602 is used to determine the vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time;

[0121] The power limit judgment unit 603 is used to judge whether the number of times that the vehicle power limit value is less than the preset power limit threshold value within the preset target time period meets the preset condition;

[0122] The alarm unit 604 is used to determine and trigger a vehicle power limit reminder when a preset condition is met.

[0123] In summary, the present invention discloses a whole vehicle power limit reminder triggering device, which obtains the actual maximum output electric power of the target vehicle power system and the standard maximum output electric power of each power component in the power system when there is no fault in real time, so as to determine the whole vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time, and then within the preset target time, when the number of times the whole vehicle power limit value is less than the preset power limit threshold meets the preset conditions, it is determined to trigger the whole vehicle power limit reminder. It can be seen that the present invention starts from the overall perspective of the target vehicle, and judges whether to trigger the whole vehicle power limit reminder according to the actual maximum output electric power and the standard maximum output electric power of the power system as a whole. Compared with judging whether to trigger the whole vehicle power limit reminder only by whether a single component fails, it can achieve the purpose of improving the triggering accuracy of the whole vehicle power limit reminder of hybrid vehicles.

[0124] In one implementation, the power components in the power system include: an engine, a generator, a power battery, a drive motor and a power coupling device.

[0125] In one implementation, the actual maximum output electric power of the power system is calculated as follows:

[0126] Obtaining the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator, the actual maximum output electric power of the power battery, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device;

[0127] Determine the actual maximum input electrical power that can be input to the drive motor based on the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator and the actual maximum output electrical power of the power battery;

[0128] The actual maximum output electric power of the power system is determined based on the actual maximum input electric power that can be input by the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

[0129] In one implementation, determining the actual maximum input electric power that can be input to the drive motor according to the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator, and the actual maximum output electric power of the power battery includes:

[0130] Determine the actual comprehensive input mechanical power of the generator based on the actual maximum output mechanical power of the engine and the actual maximum input mechanical power of the generator;

[0131] The actual maximum input electric power that can be input to the drive motor is determined based on the actual comprehensive input mechanical power of the generator, the power generation efficiency of the generator and the actual maximum output electric power of the power battery.

[0132] In one implementation, the target vehicle further includes a driving system, and the driving components in the driving system are other components except the engine, the generator, the power battery, the drive motor and the power coupling device, and the method further includes:

[0133] Acquire fault information of each driving component in the driving system to determine whether the corresponding driving component fails according to the fault information;

[0134] If any one or more driving components fail, the limited electric power corresponding to each failed driving component is obtained. The limited electric power is used to determine the actual maximum output electric power of the power system based on the actual maximum input electric power of the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

[0135] In one implementation, the standard maximum output electric power of the power system is calculated as follows:

[0136] Obtain the standard maximum output mechanical power of the engine, the standard maximum input mechanical power of the generator, the standard maximum output electric power of the power battery, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device;

[0137] Determine the standard comprehensive input mechanical power of the generator according to the standard maximum output mechanical power of the engine and the standard maximum input mechanical power of the generator;

[0138] Determine the standard maximum input electric power that the drive motor can input based on the standard comprehensive input mechanical power of the generator, the power generation efficiency of the generator and the standard maximum output electric power of the power battery;

[0139] The standard maximum output electric power of the power system is determined based on the standard maximum input electric power that can be input by the drive motor, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device.

[0140] For the specific limitations of the vehicle power limit reminder trigger device, please refer to the relevant limitations of the vehicle power limit reminder trigger method above, which will not be repeated here. Each module in the above-mentioned vehicle power limit reminder trigger device can be implemented in whole or in part through software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the controller in hardware form, or can be stored in the memory in the controller in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0141] In one implementation, the present application embodiment discloses a controller, whose internal structure diagram can be as follows: Figure 7 As shown. The controller includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the controller is used to provide computing and control capabilities. The memory of the controller includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface of the controller is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a vehicle power limit reminder triggering method is implemented.

[0142] In one embodiment, a controller is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0143] Acquire the actual maximum output electric power of the power system of the target vehicle and the standard maximum output electric power of the power system in real time. The standard maximum output electric power of the power system is the maximum output electric power of the power system when all power components in the power system are fault-free.

[0144] Determine the vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time;

[0145] Determine whether the number of times the vehicle power limit value is less than a preset power limit threshold within a preset target time meets a preset condition;

[0146] If the preset conditions are met, the vehicle power limit reminder is triggered.

[0147] In one implementation, an embodiment of the present application discloses a vehicle, which includes the controller disclosed in the above embodiment.

[0148] In one implementation, the present application discloses a computer-readable storage medium. When the instructions in the computer-readable storage medium are executed by a processor in a controller, the controller is enabled to execute the steps of any embodiment of a vehicle power limit reminder triggering method disclosed in the present invention. The computer-readable storage medium can be non-volatile or volatile.

[0149] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0150] Acquire the actual maximum output electric power of the power system of the target vehicle and the standard maximum output electric power of the power system in real time. The standard maximum output electric power of the power system is the maximum output electric power of the power system when all power components in the power system are fault-free.

[0151] Determine the vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time;

[0152] Determine whether the number of times the vehicle power limit value is less than a preset power limit threshold within a preset target time meets a preset condition;

[0153] If the preset conditions are met, the vehicle power limit reminder is triggered.

[0154] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0155] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0156] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A vehicle power limit reminder triggering method, characterized in that: include: Acquire the actual maximum output electric power of the power system of the target vehicle and the standard maximum output electric power of the power system in real time, wherein the standard maximum output electric power of the power system is the maximum output electric power of the power system when all power components in the power system are fault-free; and the actual maximum output electric power of the power system is the maximum output electric power that the power system can currently output; Determining a vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time; Determine whether the number of times that the vehicle power limit value is less than a preset power limit threshold value within a preset target time meets a preset condition; If the preset conditions are met, determining to trigger the vehicle power limit reminder; Among them, the power components in the power system include: an engine, a generator, a power battery, a drive motor and a power coupling device.

2. The vehicle power limit reminder triggering method according to claim 1, characterized in that: The actual maximum output electric power of the power system is calculated as follows: Obtaining the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator, the actual maximum output electric power of the power battery, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device; Determining the actual maximum input electric power that can be input to the drive motor according to the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator and the actual maximum output electric power of the power battery; The actual maximum output electric power of the power system is determined based on the actual maximum input electric power that can be input by the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

3. The vehicle power limit reminder triggering method according to claim 2, characterized in that: The determining the actual maximum input electric power that can be input to the drive motor according to the actual maximum output mechanical power of the engine, the actual maximum input mechanical power of the generator and the actual maximum output electric power of the power battery comprises: Determining the actual comprehensive input mechanical power of the generator according to the actual maximum output mechanical power of the engine and the actual maximum input mechanical power of the generator; The actual maximum input electric power that can be input to the drive motor is determined based on the actual comprehensive input mechanical power of the generator, the power generation efficiency of the generator and the actual maximum output electric power of the power battery.

4. The vehicle power limit reminder triggering method according to claim 2, characterized in that: The target vehicle further includes a driving system, wherein the driving components in the driving system are other components except the engine, the generator, the power battery, the drive motor and the power coupling device, and the method further includes: Acquiring fault information of each driving component in the driving system to determine whether a corresponding driving component fails according to the fault information; If any one or more of the driving components fail, the limited electric power corresponding to each of the failed driving components is obtained, and the limited electric power is used to determine the actual maximum output electric power of the power system together with the actual maximum input electric power of the drive motor, the actual maximum output electric power of the drive motor, and the actual maximum output electric power of the power coupling device.

5. The vehicle power limit reminder triggering method according to claim 1, characterized in that: The standard maximum output electric power of the power system is calculated as follows: Obtaining the standard maximum output mechanical power of the engine, the standard maximum input mechanical power of the generator, the standard maximum output electric power of the power battery, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device; Determining a standard comprehensive input mechanical power of the generator according to the standard maximum output mechanical power of the engine and the standard maximum input mechanical power of the generator; Determining the standard maximum input electric power that can be input to the drive motor according to the standard comprehensive input mechanical power of the generator, the power generation efficiency of the generator and the standard maximum output electric power of the power battery; The standard maximum output electric power of the power system is determined based on the standard maximum input electric power that can be input by the drive motor, the standard maximum output electric power of the drive motor, and the standard maximum output electric power of the power coupling device.

6. A vehicle power limit reminder trigger device, characterized in that: include: An electric power acquisition unit, used for acquiring in real time the actual maximum output electric power of the power system of the target vehicle and the standard maximum output electric power of the power system, wherein the standard maximum output electric power of the power system is the maximum output electric power of the power system when all power components in the power system are fault-free; and the actual maximum output electric power of the power system is the maximum output electric power that the power system can currently output; A power limit calculation unit, used to determine the vehicle power limit value of the target vehicle according to the actual maximum output electric power of the power system and the standard maximum output electric power of the power system obtained each time; A power limit judgment unit, used to judge whether the number of times the vehicle power limit value is less than a preset power limit threshold value within a preset target time period satisfies a preset condition; An alarm unit, used to determine and trigger a vehicle power limit reminder when the preset conditions are met; Among them, the power components in the power system include: an engine, a generator, a power battery, a drive motor and a power coupling device.

7. A controller comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the vehicle power limit reminder triggering method as described in any one of claims 1 to 5 is implemented.

8. A vehicle, characterized in that: The vehicle comprises the controller as claimed in claim 7 above.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the vehicle power limit reminder triggering method as described in any one of claims 1 to 5 is implemented.

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