EV Display Control for Driving Mode Recognition
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Solution Overview
Problem
In battery electric vehicles, it can be difficult for drivers to distinguish between the motor driving mode and the variable speed driving mode, which can lead to confusion and an unfamiliar driving experience.
Innovation Solution
The vehicle is equipped with a display apparatus and a controller that, based on the selected driving mode, either displays simulated engine rotation speed in the variable speed driving mode or does not display it in the motor driving mode, allowing the driver to recognize the current mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vehicle provides multiple driving modes with different torque characteristics, then the adaptability of the vehicle to different driving scenarios is improved, but the ease of operation deteriorates due to driver confusion about the current mode
Solution Approach 1:
The display apparatus uses different color schemes to indicate different driving modes. In the variable speed driving mode, the display shows simulated engine rotation speed with engine-like color patterns, while in the motor driving mode, the display shows actual motor rotation speed with different color patterns. This visual differentiation allows drivers to immediately recognize the current mode without confusion.
Solution Approach 2:
The display apparatus acts as an intermediary between the control system and the driver. It translates the abstract concept of driving mode into concrete visual information that drivers can easily understand, such as displaying simulated engine rotation speed in variable speed mode or actual motor rotation speed in motor mode, thereby bridging the gap between complex system states and driver perception.
2Ease of operation
If the display shows simulated engine rotation speed in variable speed mode, then the ease of operation is improved by helping drivers recognize the mode, but the device complexity increases due to additional display control functions
Solution Approach 1:
The display apparatus performs multiple functions: it displays rotation speed information, indicates the current driving mode through different display patterns, and provides visual feedback about torque characteristics. By making the display multi-functional, the patent avoids adding separate indicators while still improving mode recognition, thus limiting the increase in device complexity.
Solution Approach 2:
The patent combines the mode indication function with the existing rotation speed display function. Instead of adding a separate mode indicator, the system merges mode information into the rotation speed display by showing simulated engine rotation speed in variable speed mode and actual motor rotation speed in motor mode. This integration approach improves mode recognition without significantly increasing device complexity.
Data Source
AI summary
The present disclosure provides a battery electric vehicle enables the driver to recognize whether the vehicle is driven in a motor driving mode or in a variable speed driving mode. The controller is programmed to control the display apparatus to display simulated rotation speed as rotation speed of the engine in the engine vehicle with simulated torque behavior when the variable speed driving mode is selected by the mode selector, and not to display the simulated rotation speed when the motor driving mode is selected by the mode selector. This enables the driver to recognize whether the vehicle is driven in the motor driving mode or in the variable speed driving mode.