Charging Door Projection Lamp for Visible EV Charge Status
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Solution Overview
Problem
Current electric vehicle charging doors lack intuitive indicators for state of charge (SOC) and often obstruct visibility, leading to user inconvenience and a lack of luxury feel.
Innovation Solution
A charging door equipped with a projection lamp module that projects light onto the ground based on battery SOC, featuring a controller to manage light color and functionality, including a micro switch for door detection and smart key interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a charging indicator light is mounted around the charging port using an elongated semicircular light guide, then the SOC value can be indicated, but the indicator light occupies a lot of space in the limited space of the vehicle and it is difficult for the user to recognize the SOC value from a distance
Solution Approach 1:
The patent projects the charging indicator light from the charging door base onto the ground in front of the charging door, transitioning the display from a two-dimensional surface mount to a three-dimensional projection. This allows the SOC information to be displayed in a new spatial dimension, making it visible from a distance without occupying additional space within the charging door structure.
2Loss of information
If a charging indicator light is mounted around the charging port, then the SOC value can be indicated, but the user cannot easily recognize the SOC value from a distance unless standing right in front of the charging door
Solution Approach 1:
The patent projects the charging indicator light from the charging door base onto the ground in front of the charging door, transitioning the display from a two-dimensional surface mount to a three-dimensional projection. This allows the SOC information to be displayed in a new spatial dimension, making it visible from a distance without occupying additional space within the charging door structure.
3Loss of information
If a charging indicator light is mounted around the charging port, then the SOC value can be indicated, but at night or in dim light there is no bright light to illuminate the ground under the charging door, blocking the user's view
Solution Approach 1:
The patent integrates multiple functions into the charging indicator light system: it not only displays the SOC value through color-coded indicators but also provides ground illumination during nighttime or dim light conditions. The projection mechanism serves dual purposes, eliminating the need for separate lighting components and resolving the contradiction between information display and illumination requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances user convenience and luxury feel by providing clear SOC indication from a distance, ensuring safe charging and interactive welcome features.
Implementation Method 1
a projection lamp module which is turned on or off according to a command signal from the controller to project light of a predetermined color based on the command signal from the controller
Data Source
AI summary
A charging door provided with a projection lamp and a method of controlling projection of the same, includes a base, a charging door panel, a connection member, and a projection lamp module, wherein a charging port is formed in the base, and a vehicle is charged through the charging port, the charging door panel is pivotably mounted to the base, the connection member connects the base and the charging door panel with each other, and a mounting hole is formed in the connection member, and the projection lamp module is mounted in the mounting hole of the connection member, and the projection lamp module is electrically connected to a controller to be turned on or off according to a command signal of the controller and to project light of a predetermined color, based on a command signal of the controller.