Multi-Zone Backlight Window Defrosting System
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Solution Overview
Problem
Modern vehicles, especially electric and hybrid vehicles, face challenges in efficiently heating and defrosting windows using electrical storage cells without drawing unnecessary current, which can impact the vehicle's operational range.
Innovation Solution
A multi-zone heating system for vehicle windows that includes an electrical storage unit and a controller to selectively activate heating circuits based on the electrical charge, prioritizing energy usage by activating zones strategically aligned with the driver's field of view and adjusting according to charge thresholds, with user interface options for manual control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If heating circuits are activated to defrost the backlight, then visibility is improved, but electrical charge consumption increases
Solution Approach 1:
The backlight is divided into multiple heating zones (first zone, second zone, third zone) that can be independently controlled. The controller selectively activates only the necessary zones based on defrosting needs and electrical charge levels, avoiding unnecessary energy consumption while maintaining visibility where required.
Solution Approach 2:
The system changes the operational parameters by adjusting which heating zones are active based on the electrical charge level. When charge is sufficient, more zones can be activated for complete defrosting. When charge is low, the system reduces activation to critical zones only, dynamically adapting energy consumption to available resources.
2Reliability
If multiple heating zones are activated simultaneously, then defrosting effectiveness is improved, but electrical charge depletes faster
Solution Approach 1:
The heating system transitions from a static on/off control to a dynamic multi-level control system. The controller continuously monitors electrical charge levels and adjusts the number of active heating zones in real-time, creating a dynamic balance between defrosting effectiveness and energy conservation throughout the battery's charge cycle.
Solution Approach 2:
The system applies partial action by activating only the necessary portion of heating zones based on current needs and charge availability. Rather than always activating all zones for maximum effectiveness, the system uses just enough heating power to maintain safety and comfort while preserving battery life.
3Illumination intensity
If the first heating zone (central triangular zone) is prioritized for heating, then field of view visibility is improved, but peripheral areas may remain less effective
Solution Approach 1:
The first heating zone is strategically positioned and shaped to match the driver's field of view through the rear window, creating a concentration of heating power exactly where it is most needed for safety. This local quality approach ensures critical visibility areas receive priority treatment while peripheral zones receive reduced or conditional heating.
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
The system efficiently heats and defrosts vehicle windows while optimizing energy use, ensuring the vehicle's electrical storage unit preserves sufficient charge for operation, enhancing visibility and reducing energy consumption.
Implementation Method 1
a plurality of heating circuits disposed on a window of the vehicle
Data Source
AI summary
An apparatus for heating a window of a vehicle comprises an electrical storage unit configured to store an electrical charge and a plurality of heating circuits disposed on a window of the vehicle. The apparatus further comprises a controller configured to monitor the electrical charge of the electrical storage unit and selectively activate one or more of the heating circuits based on the electrical charge.