Hybrid Vehicle Driving Mode Control for Maximum Acceleration Power
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Solution Overview
Problem
Existing hybrid vehicle systems fail to accurately determine the driving mode that maximizes power output to meet the driver's acceleration demands, relying solely on SOC and speed signals without considering the driver's power acceleration needs.
Innovation Solution
A method and apparatus that determine the target driving mode by recognizing driver power acceleration demands and calculating the maximum power in different modes based on vehicle operating parameters, including engine, motor, and battery capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the driving mode is determined solely based on predetermined SOC and vehicle speed calibration settings, then the control logic is simple, but the vehicle cannot accurately respond to the driver's power acceleration demands
Solution Approach 1:
The system performs preliminary calculations of maximum vehicle power for different driving modes (series mode, parallel mode, pure electric mode) based on current operating parameters before the driver makes acceleration demands. This pre-computation of power capabilities allows the system to quickly determine the optimal driving mode when power acceleration is needed, without requiring complex real-time decision-making logic.
Solution Approach 2:
The patent implements dynamic switching between different driving modes (series, parallel, pure electric) based on real-time comparison of maximum power capabilities in each mode. The system continuously monitors operating parameters and dynamically adjusts the driving mode to match the driver's power demands, making the powertrain system adaptable and responsive rather than static.
2Power
If the vehicle uses a fixed calibration-based driving mode selection, then the system is easy to implement, but it cannot maximize vehicle power output when the driver needs acceleration
Solution Approach 1:
The system incorporates feedback mechanisms by continuously monitoring operating parameters (SOC, vehicle speed, engine state, motor state) and using this information to dynamically calculate and compare maximum power capabilities across different driving modes. This feedback loop ensures the system can accurately recognize when power acceleration is needed and select the appropriate mode to maximize power output.
Solution Approach 2:
The patent changes the control parameter from fixed predetermined SOC and speed thresholds to dynamic calculations of maximum vehicle power in different driving modes. By using parameter changes based on real-time operating conditions (engine power, motor power, battery available power), the system can accurately determine the optimal driving mode to satisfy the driver's power acceleration demands.
3Productivity
If the system calculates maximum power for different driving modes based on operating parameters, then the vehicle can meet power acceleration demands, but the computational complexity increases
Solution Approach 1:
The patent segments the powertrain system into distinct components (engine, driving motor, generator, battery) and calculates the maximum power contribution of each component in different driving modes separately. By dividing the overall power calculation into manageable segments (series mode power, parallel mode power, pure electric mode power), the system can compute the optimal mode without requiring overly complex integrated calculations.
Data Source
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AI summary
A target driving mode determination method and apparatus for hybrid vehicle, a vehicle, a medium, and a device, a maximum power of the vehicle in different driving modes is obtained based on operating parameters of the vehicle, and then an optimum driving mode that meets a power acceleration demand of a driver is selected the maximum power of the vehicle in different driving modes. The method includes: acquiring operating parameters of the vehicle; determining a driver demand power based on the operating parameters of the vehicle; when it is recognized according to the driver demand power that the driver has a power acceleration demand, determining a maximum power of the vehicle in a series mode and a maximum power of the vehicle in a parallel mode based on the operating parameters of the vehicle; and determining a target driving mode of the hybrid vehicle from a dynamic performance perspective based on the maximum power of the vehicle in the series mode and the maximum power of the vehicle in the parallel mode.