Power generation efficiency management method, device and equipment of hybrid power vehicle, medium and vehicle

Abstract

The invention provides a power generation efficiency management method, device and equipment of a hybrid power vehicle, a medium and the vehicle, and relates to the technical field of vehicles. The method comprises the steps that the current altitude of a vehicle is obtained, the current actual power generation efficiency of a methanol engine is calculated according to engine data of the vehicle, and then an early warning message is pushed according to the altitude, the actual power generation efficiency and a preset early warning strategy. Wherein the early warning strategy comprises a plurality of altitude ranges, target power generation efficiency corresponding to different altitude ranges, and early warning levels corresponding to different difference ranges between the target power generation efficiency corresponding to each altitude range and the actual power generation efficiency. By means of the method, the problems that according to a traditional hybrid power vehicle power generation efficiency management method, engine efficiency false alarm early warning and missing alarm early warning are likely to be generated when the vehicle crosses different altitude areas are solved, and the early warning accuracy and reliability are improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method, apparatus, equipment, medium, and vehicle for managing the power generation efficiency of a hybrid vehicle. Background Technology

[0002] Methanol, as a renewable energy source, has advantages such as low cost and low carbon emissions, and is widely used in the field of new energy vehicles. However, the power generation efficiency of methanol engines is significantly affected by altitude, becoming a key bottleneck restricting the stable application of methanol range-extended hybrid vehicles in multi-altitude regions.

[0003] In existing technologies, methanol engine power generation efficiency management schemes rely on static monitoring, which pushes early warning messages to users by monitoring the ratio of power to fuel consumption (power generation efficiency). This method does not establish a correlation between altitude and engine power generation efficiency, and cannot distinguish whether the fluctuation of engine efficiency is caused by changes in altitude or by engine failure.

[0004] However, this method is prone to causing false alarms in engine efficiency warnings at high altitudes and missed alarms in low altitudes. Summary of the Invention

[0005] This application provides a method, apparatus, equipment, medium, and vehicle for managing the power generation efficiency of hybrid vehicles, in order to achieve the technical effect of improving the reliability of early warning of methanol engine power generation efficiency.

[0006] In a first aspect, embodiments of this application provide a method for managing the power generation efficiency of a hybrid vehicle, comprising:

[0007] Obtain the vehicle's current altitude;

[0008] Calculate the current actual power generation efficiency of the methanol engine based on the vehicle's engine data;

[0009] Based on the altitude, the actual power generation efficiency, and the preset early warning strategy, an early warning message is pushed. The early warning strategy includes: multiple altitude ranges, target power generation efficiencies corresponding to different altitude ranges, and early warning levels corresponding to different ranges of difference between the target power generation efficiency and the actual power generation efficiency for each altitude range.

[0010] In one possible implementation, the warning levels include efficiency alerts, performance alarms, or danger alerts;

[0011] Accordingly, the step of pushing early warning messages based on the altitude, the actual power generation efficiency, and the preset early warning strategy includes:

[0012] Calculate the difference between the actual power generation efficiency and the target power generation efficiency corresponding to the altitude range at which the altitude is located;

[0013] The warning level corresponding to the range of differences where the difference values ​​are located is determined as the target warning level;

[0014] The warning message is pushed out according to the target warning level.

[0015] In one possible implementation, before calculating the current actual power generation efficiency of the methanol engine based on the vehicle's engine data, the method further includes:

[0016] The engine data is obtained by collecting the net output torque, friction torque, engine speed, and fuel flow rate of the methanol engine.

[0017] In one possible implementation, calculating the current actual power generation efficiency of the methanol engine based on the vehicle's engine data includes:

[0018] The engine power of the methanol engine is calculated based on the net output torque, the friction torque, and the engine speed.

[0019] Calculate the methanol consumption of the methanol engine based on the fuel flow rate;

[0020] The actual power generation efficiency is calculated based on the engine power and the engine alcohol consumption.

[0021] In one possible implementation, obtaining the vehicle's current altitude includes:

[0022] The altitude of the vehicle is calculated by collecting atmospheric pressure data from an atmospheric pressure sensor.

[0023] In one possible implementation, the method further includes:

[0024] The difference between the target power generation efficiency and the actual power generation efficiency is used as the input of the proportional-integral (PI) regulator. The target power generation efficiency is used as the target to obtain the adjusted net output torque and engine speed output by the PI regulator.

[0025] The vehicle operation is controlled based on the adjusted net output torque and engine speed.

[0026] In one possible implementation, the push notification message includes:

[0027] Warning messages are pushed to the driver through the vehicle's infotainment system.

[0028] And / or,

[0029] A warning message carrying the vehicle's identifier is sent to the vehicle's service platform.

[0030] Secondly, embodiments of this application provide a power generation efficiency management device for a hybrid vehicle, comprising:

[0031] The first processing module is used to obtain the current altitude of the vehicle;

[0032] The second processing module is used to calculate the current actual power generation efficiency of the methanol engine based on the vehicle's engine data.

[0033] The third processing module is used to push early warning messages based on the altitude, the actual power generation efficiency, and the preset early warning strategy. The early warning strategy includes: multiple altitude ranges, target power generation efficiencies corresponding to different altitude ranges, and early warning levels corresponding to different ranges of difference between the target power generation efficiency and the actual power generation efficiency for each altitude range.

[0034] Thirdly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0035] The memory stores computer-executed instructions;

[0036] The processor executes computer execution instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0037] Fourthly, embodiments of this application provide a vehicle, including: a vehicle body and a controller, the controller being used to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0038] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0039] This application provides a method, apparatus, device, medium, and vehicle for managing the power generation efficiency of a hybrid vehicle. It acquires the vehicle's real-time altitude to provide key environmental parameters for subsequent judgment. Secondly, based on collected engine data including net output torque, friction torque, engine speed, and fuel flow, it calculates the actual power generation efficiency of the methanol engine. Finally, based on the altitude, actual power generation efficiency, and a preset warning strategy (which defines multiple altitude ranges, target power generation efficiencies for different altitude ranges, and different warning levels corresponding to the difference between the target and actual power generation efficiencies for each altitude range), it pushes corresponding warning messages to users or service platforms. This method introduces altitude as a dynamic variable, establishes a target power generation efficiency benchmark that changes with the environment, and a tiered warning mechanism. This solves the problems of false alarms and missed warnings regarding engine efficiency that easily occur in traditional hybrid vehicle power generation efficiency management methods when the vehicle crosses different altitude regions, improving the accuracy and reliability of warnings and effectively ensuring vehicle driving safety and stable engine operation. Attached Figure Description

[0040] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0041] Figure 1 A flowchart illustrating a method for managing the power generation efficiency of a hybrid vehicle provided in this application. Figure 1 ;

[0042] Figure 2 A flowchart illustrating a method for managing the power generation efficiency of a hybrid vehicle provided in this application. Figure 2 ;

[0043] Figure 3 A flowchart illustrating a method for managing the power generation efficiency of a hybrid vehicle provided in this application. Figure 3 ;

[0044] Figure 4 A schematic diagram of the structure of a power generation efficiency management device for a hybrid vehicle provided in this application;

[0045] Figure 5 This is a schematic diagram of the structure of an electronic device provided in this application.

[0046] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0048] The application background of this application is explained as follows:

[0049] Against the backdrop of a global energy transition towards cleaner and lower-carbon energy, methanol, as a renewable energy source, is widely used in the new energy vehicle sector due to its multiple core advantages, including low fuel cost and low carbon emissions. From methanol-fueled vehicles to methanol range-extended hybrid vehicles, the introduction of various models not only enriches the product portfolio of the new energy vehicle market but also provides users with more green travel options, contributing to the low-carbon transformation of the transportation sector.

[0050] However, the power generation efficiency of methanol engines is significantly affected by altitude. As the altitude of methanol range-extended hybrid vehicles increases, atmospheric pressure decreases, and air density drops, leading to insufficient air intake and reduced combustion efficiency, which in turn affects power generation efficiency. Furthermore, high-altitude areas may also experience complex environmental conditions such as low temperatures and low oxygen levels, further exacerbating engine performance fluctuations. Therefore, when vehicles operate at different altitudes, it is necessary to dynamically adjust the power generation efficiency management strategy of hybrid vehicles to maintain power generation efficiency within a reasonable range and avoid performance degradation, engine damage, or user safety hazards caused by abnormal efficiency.

[0051] In existing technologies, methanol engine power generation efficiency management solutions mainly rely on static monitoring, that is, pushing early warning messages to users by monitoring power generation efficiency in real time. However, this approach cannot distinguish whether engine efficiency fluctuations are caused by changes in altitude or engine malfunctions. Because the impact of altitude on vehicle engine power generation efficiency is not considered, it is prone to false alarms in high-altitude areas and missed alarms in low-altitude areas, making it difficult to comprehensively ensure stable engine operation.

[0052] In summary, providing a technical solution that can improve the reliability of early warning for methanol engine power generation efficiency, thereby ensuring the stable operation of methanol range-extended hybrid vehicle engines and vehicle driving safety, is an urgent technical problem to be solved.

[0053] Based on the aforementioned technical problems, the inventors, in the process of researching a method for managing the engine efficiency of methanol range-extended hybrid vehicles, discovered that by collecting atmospheric pressure using high-precision sensors to obtain the vehicle's altitude, and combining the altitude with engine data and a preset altitude-efficiency mapping relationship, they could determine whether the vehicle's actual power generation efficiency was within the target range. Based on the efficiency gap, they could initiate tiered warnings, enabling precise monitoring of the engine's operating status. Furthermore, through a dual-end warning mechanism involving both users and vehicle manufacturers, they improved vehicle operational safety and stable engine operation. Therefore, this application provides a method, device, equipment, medium, and vehicle for managing the power generation efficiency of hybrid vehicles.

[0054] Understandably, the hybrid vehicle power generation efficiency management method provided in this application fully considers the impact of altitude on the power generation efficiency of methanol engines. Therefore, the application scenarios of this method can cover diverse driving environments such as urban roads, plateau mountains, and high-altitude off-road driving, and it is especially suitable for areas with significant altitude differences, such as the Qinghai-Tibet Plateau and the Yunnan-Guizhou Plateau.

[0055] The technical solution of this application and how it solves the above-mentioned technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0056] Figure 1 A flowchart illustrating a method for managing the power generation efficiency of a hybrid vehicle provided in this application. Figure 1 ,like Figure 1 As shown, the method includes:

[0057] S101: Obtain the current altitude of the vehicle.

[0058] In this step, altitude refers to the altitude value corresponding to the vehicle's real-time geographical location, which is collected and calculated by the onboard hardware. This value reflects the vehicle's vertical height relative to the sea level.

[0059] In one possible implementation, the vehicle's current altitude is calculated by using atmospheric pressure collected by an atmospheric pressure sensor.

[0060] For example, an intake manifold absolute pressure (MAP) sensor, installed on the intake manifold behind the throttle body (such as on the side wall, top, or pressure regulating chamber of the intake manifold) or installed in the engine compartment and connected to the intake manifold via a vacuum tube, can detect the absolute pressure of the intake manifold behind the throttle body to obtain the external atmospheric pressure signal. This pressure signal is then converted into a corresponding electrical signal and transmitted to the vehicle's electronic control unit (ECU). Since atmospheric pressure and altitude have a fixed physical relationship—approximately 1 hPa decreases in atmospheric pressure for every 12 meters increase in altitude under standard atmospheric conditions (this relationship is established in the international standard atmospheric model)—the ECU, upon receiving the pressure signal from the MAP sensor, calculates the vehicle's current altitude using the pressure-altitude conversion formula: Altitude = (Standard sea-level atmospheric pressure - Real-time detected atmospheric pressure) × 12.

[0061] The vehicle's current altitude is obtained by measuring atmospheric pressure, without relying on satellite signals. Even in complex scenarios such as tunnels and tall buildings, it can continuously output stable and accurate altitude data, providing a reliable basis for subsequent adjustments to the methanol engine's power generation efficiency parameters.

[0062] S102: Calculate the current actual power generation efficiency of the methanol engine based on the vehicle's engine data.

[0063] In this step, the actual power generation efficiency of the methanol engine is used to reflect the effectiveness of the engine in converting methanol fuel energy into electrical energy, and is a core indicator for evaluating engine performance.

[0064] In one possible implementation, prior to S102, the power generation efficiency management method for the hybrid vehicle further includes: collecting the net output torque, friction torque, engine speed, and fuel flow of the methanol engine to obtain engine data.

[0065] In other words, engine data can specifically include net output torque, friction torque, engine speed, and fuel flow rate. Specifically, net output torque and friction torque can be acquired using a torque sensor. Net output torque refers to the effective torque output by the engine after deducting internal losses, determining the engine's power output capability. Friction torque is the resistance torque generated by friction between internal engine components, reflecting the level of energy loss. Engine speed reflects the number of crankshaft revolutions per minute, indicating the engine's operating speed, and can be calculated using a crankshaft position sensor. Fuel flow rate refers to the amount of methanol fuel entering the engine per unit time, and can be recorded using a fuel flow sensor to measure methanol consumption per unit time (e.g., per second).

[0066] Based on the net output torque, friction torque, engine speed, and fuel flow of the methanol engine, the current actual power generation efficiency of the engine can be calculated. This can accurately quantify the effectiveness of the engine in converting the chemical energy of methanol fuel into electrical energy, providing a reference for subsequent adjustments to the power generation efficiency parameters of the methanol engine, thereby ensuring the stable operation of the methanol engine and improving vehicle range and driving safety.

[0067] S103: Based on altitude, actual power generation efficiency, and preset early warning strategies, push early warning messages. The early warning strategies include: multiple altitude ranges, target power generation efficiency corresponding to different altitude ranges, and early warning levels corresponding to different ranges of difference between the target power generation efficiency and the actual power generation efficiency for each altitude range.

[0068] In this step, the early warning strategy refers to the pre-set correspondence rules between altitude, efficiency difference, and early warning level. These rules are based on a large number of methanol range-extended hybrid vehicles as test objects. Through real-vehicle tests in different altitude ranges, the fluctuation range of power generation efficiency during normal engine operation is recorded. This allows for the determination of multiple altitude ranges and the target power generation efficiency corresponding to different altitude ranges. Combined with the engine's operating conditions when there are abnormal efficiency deviations in the real-vehicle tests, the early warning levels corresponding to the different difference ranges between the target power generation efficiency and the actual power generation efficiency for each altitude range are determined.

[0069] By analyzing the vehicle's altitude, actual power generation efficiency, and the warning strategy, the system automatically determines whether to send a warning message to the user or vehicle manufacturer, and what level of warning message to send. This solves the problem of false alarms or missed warnings in multi-altitude scenarios caused by traditional methanol engine power generation efficiency management methods.

[0070] The hybrid vehicle power generation efficiency management method provided in this application first collects atmospheric pressure using an atmospheric pressure sensor (such as a MAP sensor) and calculates the vehicle's current altitude. Then, based on engine data such as the methanol engine's net output torque, friction torque, engine speed, and fuel flow rate, it calculates the engine's actual power generation efficiency to accurately assess its effectiveness in converting methanol fuel energy into electrical energy. Finally, based on the altitude, actual power generation efficiency, and a preset warning strategy, it automatically pushes warning messages of corresponding levels. This method effectively solves the problem of false alarms or missed alarms in traditional methanol engine power generation efficiency management methods in multi-altitude scenarios, thereby improving the operational stability of the methanol engine and the driving safety of the vehicle.

[0071] Figure 2 A flowchart illustrating a method for managing the power generation efficiency of a hybrid vehicle provided in this application. Figure 2 ,like Figure 2 As shown, in Figure 1Based on the previous example, in step S102, the actual power generation efficiency of the methanol engine is calculated according to the vehicle's engine data, specifically including:

[0072] S201: Calculate the engine power of the methanol engine based on the net output torque, friction torque, and engine speed.

[0073] Alternatively, the engine output power can be calculated using the following formula based on the net output torque, friction torque, and engine speed:

[0074]

[0075] in, This indicates the engine's net output torque; This indicates the frictional torque of the engine; Indicates engine speed; This represents the engine's output power, also known as net output power, which is the effective power that the engine converts into electrical energy.

[0076] S202: Calculate the methanol consumption of the methanol engine based on the fuel flow rate.

[0077] Optionally, the methanol consumption of the methanol engine, i.e., the methanol consumption amount, can be calculated based on the engine's fuel flow rate using the following formula:

[0078]

[0079] in, Indicates the engine's fuel flow rate; The lower heating value of methanol is expressed in kJ / kg or kJ / L. This indicates engine alcohol consumption, which is the fuel flow rate. This is converted into the total amount of fuel chemical energy input per unit time.

[0080] S203: Calculate the actual power generation efficiency based on engine power and engine methanol consumption.

[0081] Optionally, based on the engine's net output power and methanol consumption, the current actual power generation efficiency of the methanol engine can be calculated using the following formula:

[0082]

[0083] in, This indicates the current actual power generation efficiency of the methanol engine, reflecting the efficiency with which the engine converts methanol fuel energy into electrical energy. For example, if the engine's net output power is 20 kW and its methanol consumption is 25 kW, then the current actual power generation efficiency of the methanol engine is 80%.

[0084] The power generation efficiency management method for hybrid vehicles provided in this application embodiment, in Figure 1 Building upon this foundation, the calculation method for the actual power generation efficiency of methanol engines was further refined. Specifically, this includes: first, calculating the engine's net output power based on net output torque, friction torque, and engine speed; second, converting fuel consumption into chemical energy input per unit time, i.e., engine methanol consumption, based on fuel flow rate and the lower heating value of methanol; and finally, calculating the current actual power generation efficiency of the methanol engine based on engine power and engine methanol consumption. This method allows for a quantitative assessment of the effectiveness of the methanol engine in converting fuel chemical energy into electrical energy, providing a reliable data foundation for subsequent precise early warning based on altitude and preset strategies. This effectively ensures stable engine operation under different altitude conditions, improving energy efficiency and overall vehicle economy.

[0085] Figure 3 A flowchart illustrating a method for managing the power generation efficiency of a hybrid vehicle provided in this application. Figure 3 ,like Figure 3 As shown, in Figure 1 Based on the embodiment, in S103, an early warning message is pushed according to the altitude, actual power generation efficiency, and a preset early warning strategy. The early warning strategy includes: multiple altitude ranges, target power generation efficiencies corresponding to different altitude ranges, and early warning levels corresponding to different ranges of difference between the target power generation efficiency and the actual power generation efficiency for each altitude range, specifically including:

[0086] In one possible implementation, the warning levels include efficiency alerts, performance warnings, or danger alerts.

[0087] The three warning levels are a three-tiered progressive warning mechanism based on the difference between the actual power generation efficiency of the methanol engine and the target power generation efficiency of the corresponding altitude range. Different levels correspond to different degrees of risk severity.

[0088] Understandably, the efficiency alert is the lowest level of warning. It is triggered when the actual power generation efficiency of the methanol engine is slightly lower than the target efficiency, resulting in only a minor efficiency loss that does not affect the engine's normal function. This alert reminds the user to pay attention to efficiency changes without requiring immediate repair or adjustment. The performance alarm is an intermediate level warning. It is triggered when the difference between the actual and target power generation efficiency of the methanol engine has led to a slight decrease in engine power output or a significant increase in fuel consumption. This alert reminds the user to check the engine's condition promptly. The danger alarm is the highest level warning. It is triggered when the difference between the actual and target power generation efficiency of the methanol engine has seriously threatened the engine's stable operation or affected vehicle driving safety. This alert reminds the user of a severely abnormal efficiency and the existence of a safety risk. This warning strategy uses a three-level classification to achieve differentiated responses: minor alerts, timely intervention, and emergency avoidance. This avoids excessive warnings that may disturb the user and prevents serious risks from being ignored. An exemplary warning strategy includes multiple altitude ranges, target power generation efficiencies for different altitude ranges, and warning levels corresponding to different differences between the target and actual power generation efficiencies for each altitude range, as shown in Table 1.

[0089] Table 1. An exemplary early warning strategy

[0090]

[0091] For example, assuming that the atmospheric pressure signal collected by the MAP sensor is used to calculate the current altitude of the vehicle as 1800m, the target power generation efficiency corresponding to this altitude is determined to be 1.9kWh / L.

[0092] It should be noted that the various altitude ranges in Table 1, the target power generation efficiencies corresponding to different altitude ranges, and the specific values ​​involving the different ranges of difference between the target power generation efficiencies and actual power generation efficiencies for each altitude range are merely example data used to intuitively explain the logic of the early warning strategy. This application does not impose any specific restrictions on them. In practical applications, the target power generation efficiency needs to be determined comprehensively by considering factors such as the methanol engine model, hybrid vehicle configuration, and a large amount of real-vehicle test data. The rules for corresponding efficiency difference ranges and early warning levels should also be dynamically adjusted based on actual test results and safety requirements; there is no fixed and unified standard.

[0093] S301: Calculate the difference between the actual power generation efficiency and the target power generation efficiency corresponding to the altitude range at which the altitude is located.

[0094] In this step, the difference value is used to quantify the degree of deviation between the current engine's actual power generation efficiency and the target power generation efficiency corresponding to the altitude range at which the corresponding altitude is located. It is the core basis for subsequent judgments on whether to send a warning message and to match the warning level.

[0095] For example, assuming according to Figure 2 The method mentioned in the embodiment calculates the actual power generation efficiency of the methanol engine to be 1.73 kWh / L. If the current altitude of the vehicle (1800m) falls within the altitude range of ( The target power generation efficiency is 1.9 kWh / L, so the difference between the actual power generation efficiency and the target power generation efficiency is 8.9%. In other words, at this point, the actual power generation efficiency of the methanol engine has reached 91.1% of the target power generation efficiency corresponding to the altitude range at that altitude.

[0096] S302: Determine the warning level corresponding to the range of differences where the difference value is located as the target warning level.

[0097] In this step, by locking the range of differences between the target power generation efficiency and the actual power generation efficiency corresponding to the current altitude range of the vehicle, and then classifying the calculated actual efficiency difference value into the corresponding range, the warning level to be triggered is finally determined, thus solving the problem that the static warning strategy cannot be adapted to altitude.

[0098] For example, as mentioned in Table 1, if the difference between the current actual power generation efficiency and the target power generation efficiency of the methanol engine is within a certain range... This indicates that the methanol engine's actual power generation efficiency has reached 85% to 95% of the target power generation efficiency corresponding to this altitude. At this point, the engine's actual power generation efficiency is slightly lower than the target power generation efficiency, with only a slight efficiency loss but no impact on the engine's normal function. Therefore, the target warning level is determined to be an efficiency warning, meaning that users do not need to take immediate repair or adjustment measures; they only need to monitor efficiency changes.

[0099] If the difference between the current actual power generation efficiency and the target power generation efficiency of the methanol engine is within a certain range... This indicates that the engine's actual power generation efficiency has reached 70% to 85% of the target power generation efficiency corresponding to this altitude. At this point, the difference between the engine's actual power generation efficiency and the target power generation efficiency leads to a slight decrease in engine power output or a significant increase in fuel consumption. Therefore, the target warning level is determined as a performance warning to remind the user to check the engine condition in a timely manner, so as to avoid further efficiency decline leading to more serious power loss or component damage, affecting the normal operation of the vehicle.

[0100] If the difference between the current actual power generation efficiency and the target power generation efficiency of the methanol engine is greater than 30%, it indicates that the current actual power generation efficiency is less than 70% of the target power generation efficiency corresponding to that altitude. At this point, the difference between the actual and target power generation efficiency seriously threatens the stable operation of the engine or affects vehicle driving safety. Therefore, the target warning level is determined to be a danger alert. In this situation, the user must prioritize addressing the fault and, if necessary, limit certain vehicle performance parameters.

[0101] S303: Push warning messages based on the target warning level.

[0102] Optionally, a warning message can be pushed to the driver through the vehicle's infotainment system; and / or, a warning message carrying the vehicle's identifier can be pushed to the vehicle's service platform.

[0103] For example, if the target warning level is an efficiency reminder, a warning message will be pushed to the user (driver) via text prompts or voice broadcasts on the in-vehicle display, such as: "The engine's power generation efficiency is slightly low, please observe carefully." If the target warning level is a performance alarm, a warning message will be pushed to the user via text prompts or voice broadcasts on the in-vehicle display, such as: "Please check the engine condition promptly." If the target warning level is a danger alarm, a warning message will be pushed to the user via text prompts or voice broadcasts on the in-vehicle display, such as: "Please stop immediately and contact maintenance personnel." Simultaneously, the in-vehicle electronic control unit will record key data such as the warning trigger time, current altitude, efficiency difference value, warning level, and vehicle identification, storing this data in the in-vehicle log or uploading it to the vehicle's service platform for subsequent traceability and fault diagnosis.

[0104] The hybrid vehicle power generation efficiency management method provided in this application further refines the early warning message push mechanism. Specifically, it includes: calculating the specific difference between the actual power generation efficiency and the target power generation efficiency corresponding to the altitude range where the vehicle is currently located; then, determining the target early warning level corresponding to the difference value based on the early warning levels for different difference ranges corresponding to that altitude in the early warning strategy; and finally, pushing the corresponding level of early warning message to the user through the vehicle interface and / or vehicle service platform based on the determined target early warning level. Through this method, when the methanol engine efficiency slightly decreases, performance significantly degrades, or faces serious risks, attention prompts, inspection suggestions, or emergency avoidance instructions are provided to the user respectively. This tiered early warning mechanism not only avoids excessive interference to the user but also ensures that serious faults can be identified and handled in a timely manner, thereby improving the operational reliability, safety, and user experience of hybrid vehicles in different geographical environments.

[0105] Based on the above embodiments, the hybrid vehicle power generation efficiency management method provided in this application further includes:

[0106] In one possible implementation, the difference between the target power generation efficiency and the actual power generation efficiency is used as the input to the proportional-integral (PI) regulator. The target power generation efficiency is used as the objective to obtain the adjusted net output torque and engine speed output by the PI regulator.

[0107] A proportional-integral (PI) controller is a feedback controller that regulates the output through proportional and integral control actions. The proportional action quickly adjusts the output based on the deviation, but it has a steady-state error. The integral action eliminates the steady-state error by accumulating the deviation, thus improving control accuracy. Through the interaction of the two, fast response and error-free control are achieved.

[0108] Optionally, the difference between the target power generation efficiency and the actual power generation efficiency is... The input to the PI regulator is determined, and the target power generation efficiency is set as the target of the PI regulator. First, proportional calculations are performed: ,in, Indicates proportional output. This represents the preset proportional gain, which determines the PI controller's response to the current difference value. The reaction intensity. Simultaneously, integral calculations are performed: ,in, Indicates the output of the integral action. This represents the preset integral coefficient. Indicates the difference value Integrating over time can be understood as continuously accumulating the error value from each past moment. Ultimately, the total output of the PI controller is... Determine a new, adjusted set of net output torque and engine speed.

[0109] Specifically, the total output of the PI regulator This is a quantified value representing the degree to which efficiency differences need to be compensated. It is then determined using a preset output-torque / speed mapping table. The corresponding net output torque value that needs to be adjusted and engine speed value This leads to the adjusted net output torque and the adjusted engine speed.

[0110] In another possible implementation, vehicle operation is controlled based on the adjusted net output torque and engine speed.

[0111] The onboard electronic control unit receives the adjusted net output torque and adjusted engine speed from the PI regulator, and converts them into specific control signals for the engine torque actuator and speed controller. The torque actuator adjusts fuel injection and intake air volume according to the instructions, changing the actual output of the net output torque; the speed controller synchronously adjusts the timing and intensity of engine operation to stabilize the speed at the target value. Through their combined action, the engine's power generation efficiency is precisely controlled within the target range, thereby providing stable power to the vehicle's drive system and electrical equipment. This ensures efficient and smooth operation of the vehicle in different scenarios such as climbing, acceleration, and idling, while avoiding insufficient power or fuel waste due to efficiency deviations.

[0112] It should be noted that if the adjusted net output torque and adjusted engine speed still cannot make the methanol engine's current actual power generation efficiency reach the target power generation efficiency at the corresponding altitude, then... Figures 1 to 3 The hybrid vehicle power generation efficiency management method mentioned in the embodiment pushes corresponding level of early warning messages to users through the vehicle interface and / or vehicle service platform, thereby forming a closed loop of adjustment-monitoring-early warning to ensure that users can know about abnormal engine efficiency in a timely manner.

[0113] Figure 4 A schematic diagram of the power generation efficiency management device for a hybrid vehicle provided in this application is shown below. Figure 4 As shown, the hybrid vehicle power generation efficiency management device 40 provided in this embodiment includes:

[0114] The first processing module 401 is used to obtain the current altitude of the vehicle;

[0115] The second processing module 402 is used to calculate the current actual power generation efficiency of the methanol engine based on the vehicle's engine data.

[0116] The third processing module 403 is used to push early warning messages based on altitude, actual power generation efficiency and preset early warning strategies. The early warning strategies include: multiple altitude ranges, target power generation efficiency corresponding to different altitude ranges, and early warning levels corresponding to different ranges of difference between the target power generation efficiency and the actual power generation efficiency for each altitude range.

[0117] In one possible implementation, the warning levels include efficiency alerts, performance alarms, or danger alerts; correspondingly, the third processing module 403 is specifically used for:

[0118] Calculate the difference between the actual power generation efficiency and the target power generation efficiency corresponding to the altitude range at which the altitude is located;

[0119] The warning level corresponding to the range of differences where the difference value is located is determined as the target warning level;

[0120] Warning messages will be pushed out based on the target warning level.

[0121] In one possible implementation, the power generation efficiency management device 40 of the hybrid vehicle further includes:

[0122] The fourth processing module 404 is used to collect the net output torque, friction torque, engine speed, and fuel flow of the methanol engine to obtain engine data.

[0123] In one possible implementation, the second processing module 402 is specifically used for:

[0124] Calculate the engine power of the methanol engine based on the net output torque, friction torque, and engine speed.

[0125] Calculate the methanol consumption of the methanol engine based on the fuel flow rate;

[0126] The actual power generation efficiency is calculated based on engine power and engine alcohol consumption.

[0127] In one possible implementation, the first processing module 401 is specifically used for:

[0128] The atmospheric pressure collected by the atmospheric pressure sensor is used to calculate the current altitude of the vehicle.

[0129] In one possible implementation, the hybrid vehicle's power generation efficiency management device 40 further includes a fifth processing module 405, for:

[0130] The difference between the target power generation efficiency and the actual power generation efficiency is used as the input of the proportional-integral (PI) regulator. The target power generation efficiency is used as the objective to obtain the adjusted net output torque and engine speed of the PI regulator.

[0131] The vehicle operation is controlled based on the adjusted net output torque and engine speed.

[0132] In one possible implementation, the third processing module 403 is further used for:

[0133] Warning messages are pushed to the driver through the vehicle's infotainment system.

[0134] And / or,

[0135] Send a warning message with the vehicle's identification to the vehicle's service platform.

[0136] The power generation efficiency management device for hybrid vehicles provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described again in this embodiment.

[0137] Figure 5 A schematic diagram of the structure of an electronic device provided in this application, such as... Figure 5 As shown, the electronic device 50 provided in this embodiment includes at least one processor 501 and a memory 502. Optionally, the electronic device 50 further includes a communication component 503. The processor 501, memory 502, and communication component 503 are connected via a bus 504.

[0138] In a specific implementation, at least one processor 501 executes computer execution instructions stored in memory 502, causing at least one processor 501 to perform the above-described method.

[0139] The specific implementation process of processor 501 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0140] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0141] The memory may include random access memory (RAM) in high-speed memory, and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0142] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0143] This application also provides a vehicle, including a vehicle body and a controller. The controller is used to execute the above-described method. For the specific implementation process, please refer to the above-described method embodiments. The implementation principle and technical effect are similar, and will not be repeated here.

[0144] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0145] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0146] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an ASIC. Alternatively, the processor and the readable storage medium can exist as discrete components in a device.

[0147] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0148] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0149] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0150] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0151] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0152] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method of managing power generation efficiency of a hybrid vehicle, characterized by, include: Obtain the vehicle's current altitude; Calculate the current actual power generation efficiency of the methanol engine based on the vehicle's engine data; Based on the altitude, the actual power generation efficiency, and the preset early warning strategy, an early warning message is pushed. The early warning strategy includes: multiple altitude ranges, target power generation efficiencies corresponding to different altitude ranges, and early warning levels corresponding to different ranges of difference between the target power generation efficiency and the actual power generation efficiency for each altitude range.

2. The method of claim 1, wherein, Warning levels include efficiency alerts, performance alarms, or danger alerts; Accordingly, the step of pushing early warning messages based on the altitude, the actual power generation efficiency, and the preset early warning strategy includes: Calculate the difference between the actual power generation efficiency and the target power generation efficiency corresponding to the altitude range at which the altitude is located; The warning level corresponding to the range of differences where the difference values ​​are located is determined as the target warning level; The warning message is pushed out according to the target warning level.

3. The method according to claim 1, characterized in that, Before calculating the current actual power generation efficiency of the methanol engine based on the vehicle's engine data, the method further includes: The engine data is obtained by collecting the net output torque, friction torque, engine speed, and fuel flow rate of the methanol engine.

4. The method according to claim 3, characterized in that, The calculation of the current actual power generation efficiency of the methanol engine based on the vehicle's engine data includes: The engine power of the methanol engine is calculated based on the net output torque, the friction torque, and the engine speed. Calculate the methanol consumption of the methanol engine based on the fuel flow rate; The actual power generation efficiency is calculated based on the engine power and the engine alcohol consumption.

5. The method according to any one of claims 1 to 4, characterized in that, The process of obtaining the vehicle's current altitude includes: The altitude of the vehicle is calculated by collecting atmospheric pressure data from an atmospheric pressure sensor.

6. The method according to any one of claims 1 to 4, characterized in that, The method further includes: The difference between the target power generation efficiency and the actual power generation efficiency is used as the input of the proportional-integral (PI) regulator. The target power generation efficiency is used as the target to obtain the adjusted net output torque and engine speed output by the PI regulator. The vehicle operation is controlled based on the adjusted net output torque and engine speed.

7. The method according to any one of claims 1 to 4, characterized in that, The push notification message includes: Warning messages are pushed to the driver through the vehicle's infotainment system. And / or, A warning message carrying the vehicle's identifier is sent to the vehicle's service platform.

8. A power generation efficiency management device for a hybrid vehicle, characterized in that, include: The first processing module is used to obtain the current altitude of the vehicle; The second processing module is used to calculate the current actual power generation efficiency of the methanol engine based on the vehicle's engine data. The third processing module is used to push early warning messages based on the altitude, the actual power generation efficiency, and the preset early warning strategy. The early warning strategy includes: multiple altitude ranges, target power generation efficiencies corresponding to different altitude ranges, and early warning levels corresponding to different ranges of difference between the target power generation efficiency and the actual power generation efficiency for each altitude range.

9. An electronic device, characterized in that, include: Memory, processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 1 to 7.

10. A vehicle, characterized in that, include: The vehicle body and the controller, the controller being used to perform the method as described in any one of claims 1 to 7.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1 to 7.

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