EV Meter Display Integrating Charging Connector Maintenance Alerts
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Solution Overview
Problem
The increasing contact resistance in electric vehicle charging connectors due to frequent insertion and removal of charging cords leads to elevated temperatures, necessitating a solution to inform users of the need for maintenance, while also requiring a compact display for battery charging conditions in electric vehicles like motorcycles.
Innovation Solution
A meter display device integrated into the vehicle, featuring a display section with a vehicle speed portion and adjacent sections for charging connector maintenance information, battery residual displays for both main and sub batteries, and output limitation indicators, arranged to minimize size and facilitate easy user access to critical information during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a separate display device is provided for charging connector maintenance information and battery conditions, then the information can be displayed, but the device size increases and layout space is consumed
Solution Approach 1:
The patent combines the display of charging connector maintenance information and battery conditions with the existing vehicle speed display device. The display section integrates multiple functions (vehicle speed, charging connector status, main battery residual, sub battery residual) into a single compact unit, eliminating the need for separate display devices and saving layout space in the vehicle dashboard.
2Loss of information
If multiple display sections are provided for different information (vehicle speed, charging connector maintenance, battery residuals), then all information can be displayed, but the display device becomes larger and more complex
Solution Approach 1:
The patent merges multiple display functions into a single integrated display section. The display unit simultaneously shows vehicle speed, charging connector maintenance information, main battery residual, and sub battery residual conditions, reducing device complexity while maintaining comprehensive information display.
Solution Approach 2:
The display device is designed with multi-functionality, serving as a universal display unit that handles various types of information (speed, maintenance alerts, battery status) through a single interface, thereby avoiding the need for multiple specialized display devices.
3Loss of information
If the charging connector maintenance information is displayed in a separate location, then it can be clearly shown, but the user cannot easily confirm it during vehicle operation
Solution Approach 1:
The patent positions the charging connector maintenance information display adjacent to the vehicle speed displaying portion within the same display section. This integration ensures that users can easily confirm maintenance information during vehicle operation without shifting their attention to a separate location, as both pieces of information are presented together in the driver's field of view.
Data Source
AI summary
An electric vehicle includes a main battery, a motor generating drive power of the vehicle by supply of electric power from the main battery, an output control circuit for the motor, a charging connector for supplying electric power from an external to the main battery, and a meter display device. The meter display device includes a display section including at least a vehicle speed displaying portion and a charging connector condition displaying portion displaying information related to the condition of the charging connector. The charging connector condition displaying portion displays information on maintenance of the charging connector and is disposed adjacent the vehicle speed displaying portion. A main battery residual displaying portion and a sub battery residual displaying portion are disposed around the vehicle speed displaying portion.