Vehicle Display Control for Battery Output Limit Warnings
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Solution Overview
Problem
Existing vehicle control systems that display warnings for limited motor power during automatic acceleration/deceleration modes can cause driver anxiety due to perceived abnormalities, especially when rapid acceleration is required.
Innovation Solution
A display control device that adjusts the notification frequency of motor output limits based on the vehicle's battery state and driving mode, setting stricter conditions during automatic acceleration/deceleration modes and relaxing conditions during manual driving, and predicts driver actions to optimize notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a warning notification is displayed when the battery state satisfies a limit condition during acceleration/deceleration control mode, then the motor output restriction is notified to the driver, but the traveling control is not actually executed, causing driver anxiety
Solution Approach 1:
The patent changes the parameter of the limit condition based on the acceleration/deceleration control mode status. When the mode is active, the system sets a second limit condition that is more strict than the first limit condition used when the mode is not active. This parameter change ensures warnings are only displayed when appropriate, eliminating the contradiction between notifying the driver and maintaining control reliability.
2Loss of information
If the limit condition is set to a first condition during acceleration/deceleration control mode, then the notification frequency increases, but unnecessary warnings are displayed causing driver concern
Solution Approach 1:
The system dynamically changes the limit condition parameter based on whether acceleration/deceleration control mode is active. By setting a more strict second limit condition during mode operation, the system reduces notification frequency to appropriate levels, preventing unnecessary warnings while maintaining necessary alerts when the battery state truly requires attention.
3Object-affected harmful factors
If the limit condition is set to a second condition that is more strict during acceleration/deceleration control mode, then unnecessary notifications are reduced, but the detection sensitivity may be insufficient
Solution Approach 1:
The patent implements a dynamic limit condition that adapts to the operational mode. The system switches between a first limit condition (less strict) and a second limit condition (more strict) based on whether acceleration/deceleration control is active. This dynamic adjustment maintains high detection sensitivity when needed while reducing false alarms during automated control operation.
Data Source
AI summary
A display control device includes a processor configured to: determine whether or not a state of a battery of a vehicle satisfies a predetermined limit condition, notify a driver of the vehicle of an output limit warning in which output of a motor mounted on the vehicle is limited when the state of the battery satisfies the limit condition via a notification device mounted on the vehicle, and set the limit condition to a first condition when an acceleration/deceleration control mode for controlling acceleration/deceleration of the vehicle in accordance with a distance between a preceding vehicle and the vehicle is not applied, and set the limit condition to a second condition that is more strict than the first condition when the acceleration/deceleration control mode is applied.