Smart Glass Power Cable Layout for Moving Vehicle Windows
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Solution Overview
Problem
Existing smart glass wireless power transmission systems for vehicle doors face high costs, inability to transmit power during descending operations, large size issues for inline assembly, and electromagnetic compatibility challenges, making them unsuitable for practical vehicle application.
Innovation Solution
A wired power transmission system that maintains a power supply line through a winding or unwinding cable to match the ascending/descending movement of smart glass, using a connector module, inverter, and cable module to ensure continuous power delivery, with a grommet for watertight performance and inline assembly feasibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power transmission system is applied to smart glass in vehicle door, then power can be transmitted to smart glass, but component costs increase excessively
Solution Approach 1:
The patent replaces the wireless electromagnetic power transmission system with a wired mechanical power transmission system using cables and connectors. This substitution eliminates the need for expensive wireless power transmission components (transmission coils, reception coils, magnetic resonance devices) while maintaining reliable power delivery to the smart glass through traditional wired electrical connections integrated into the door structure.
2Reliability
If wireless power transmission system is used, then power can be supplied to smart glass, but power transmission is not possible in down state of smart glass
Solution Approach 1:
The patent employs dynamic cable management systems that adapt to the smart glass's movement between up and down positions. The cable routing is designed with sufficient slack and proper tensioning mechanisms to maintain continuous electrical connection during glass descent, unlike rigid wireless systems that fail when the glass moves to the down position where magnetic coupling is disrupted.
3Reliability
If wireless power transmission system is implemented, then power can be transmitted to smart glass, but inline assembly through vehicle assembly line is not possible due to large size
Solution Approach 1:
The patent divides the power transmission system into segmented, modular components that can be independently assembled and integrated along the vehicle assembly line. The wired power transmission system consists of separate cable sections, connectors, and mounting points that can be installed in stages during manufacturing, unlike monolithic wireless power transmission units that require complete assembly before installation.
4Reliability
If wireless power transmission system is applied, then power can be transmitted to smart glass, but electromagnetic compatibility requirements are not satisfied
Solution Approach 1:
The patent eliminates electromagnetic compatibility issues by replacing the electromagnetic-based wireless power transmission system with a wired electrical connection system. The wired system uses shielded cables and traditional electrical connectors that are inherently more compatible with vehicle electromagnetic environments, avoiding the interference and regulatory compliance problems associated with wireless electromagnetic power transmission in automotive applications.
Data Source
AI summary
An embodiment wired power transmission system for a smart glass includes a connector module including a power connector connected to a holder bracket configured to fix the smart glass, the connector module being configured to transmit power to the smart glass, an inverter configured to vary an applied voltage of the power to change the power or the voltage of the smart glass, and a cable module electrically connecting the power connector and the inverter through a power cable, the cable configured to maintain an electrical connection state by forming a tension of the power cable through an interval change between the connector module and the inverter.