EV Window De-Icing Control for Range-Efficient Departure Timing
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Solution Overview
Problem
Current methods for de-icing electric vehicle windows are either time-consuming, energy-intensive, or inefficient, leading to delayed departures and reduced vehicle range, as they often require heating the entire interior, which is not necessary for de-icing alone.
Innovation Solution
A method that sets a planned departure time and uses existing heating devices to automatically detect and predict icing on windows, activating targeted de-icing functions via heating elements or a heating fan to de-ice windows without heating the interior, utilizing sensors, machine learning, and meteorological data to ensure de-icing is complete by departure time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire vehicle interior is heated to remove ice from windows, then the windows are de-iced effectively, but the power consumption increases and the electrically achievable range is reduced
Solution Approach 1:
The climate control system is segmented to perform only the specific function of window de-icing rather than heating the entire vehicle interior. Heating elements are activated only in the window regions, separating the de-icing function from general interior heating, thereby reducing overall energy consumption while maintaining effective ice removal.
Solution Approach 2:
Heating is applied locally only to the window areas that require de-icing, rather than uniformly heating the entire interior space. This localized approach concentrates thermal energy where needed, achieving effective ice removal with minimal power consumption and preserving the electric vehicle's range.
2Reliability
If the entire vehicle interior is heated to remove ice from windows, then the windows are de-iced, but the de-icing process takes a long time
Solution Approach 1:
The system performs preliminary detection of icing conditions and activates heating elements in advance of when the vehicle is needed. By detecting ice formation early and initiating targeted heating of only the window areas, the system achieves complete de-icing by the planned departure time without requiring prolonged heating of the entire interior.
Solution Approach 2:
The climate control system continuously monitors window temperature and icing conditions, using this feedback to adjust heating element activation. When ice is detected on windows, heating is activated; when windows are clear, heating is reduced or stopped. This feedback mechanism ensures timely de-icing while avoiding unnecessary extended heating operations.
3Reliability
If pre-climatization is activated to remove ice from windows, then the windows are de-iced, but the electrically achievable range is noticeably reduced
Solution Approach 1:
The climate control system is segmented to perform only the specific function of window de-icing rather than pre-climatizing the entire vehicle interior. Heating elements are activated only in the window regions, separating the de-icing function from general interior heating, thereby reducing overall energy consumption and preserving the electrically achievable range.
Solution Approach 2:
Instead of applying full interior pre-climatization, the system applies partial heating action only to the window areas that require de-icing. This partial action is sufficient to remove ice from windows while avoiding the excessive energy consumption associated with heating the entire vehicle interior, thus maintaining acceptable electric range.
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
Enables a needs-based, energy-efficient, and comfortable de-icing of electric vehicle windows without significantly reducing the vehicle's range, by using existing heating systems to directly de-ice windows without full interior heating, thus ensuring timely departures and maintaining vehicle efficiency.
Implementation Method 1
activating a heating device arranged to be able to heat the front window and/or the rear window
Implementation Method 2
activating a heating fan whose air outflow is aimed directly at the inside of the front window
Data Source
AI summary
A method for de-icing a front window and/or a rear window of an electric vehicle includes setting a planned departure time of the electric vehicle, and, prior to the scheduled departure time, automatically checking or predicting whether there is icing of the front window and/or the rear window. If icing of the front window and/or the rear window is determined to exist, then a start time for a direct de-icing operation is calculated to ensure that sufficient time is allotted to have the front window and/or the rear window de-iced at the planned departure time. The method proceeds by activating the de-icing functions for direct de-icing of the front window and/or the rear window when the start time is reached.