EV Charging Noise Control in User-Defined Quiet Zones
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Solution Overview
Problem
Existing electrified vehicles do not effectively manage noise emissions during charging, particularly in quiet zones, due to users' unawareness of noise ordinances and the influence of charging rates on noise levels.
Innovation Solution
A charging control system that allows users to define custom quiet zones and noise tolerance levels, adjusting charging rates and sound component speeds to minimize noise emissions while ensuring waste heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If charging rate is increased to improve productivity, then charging speed is improved, but noise emission level increases
Solution Approach 1:
The charging control system dynamically adjusts the charging rate based on real-time location data and noise sensitivity parameters. When the vehicle enters a quiet zone, the system automatically reduces charging rate to minimize noise emissions, and when leaving the zone, it restores higher charging rates to maintain productivity. This dynamic adjustment resolves the contradiction between charging speed and noise emission.
Solution Approach 2:
The system changes the operational parameters of the charging process by modifying the charging rate in response to environmental conditions (location within quiet zones). The control module receives location information, determines whether the vehicle is in a quiet zone, and accordingly adjusts the charging rate parameter to balance productivity requirements with noise emission constraints.
2Object-generated harmful factors
If sound generating component speed is reduced to decrease noise emission, then noise emission level is reduced, but waste heat dissipation capability is reduced
Solution Approach 1:
The system applies partial action by reducing sound generating component speeds only to the extent necessary to meet noise emission requirements in quiet zones, rather than completely shutting them down. This allows sufficient heat dissipation to continue while keeping noise levels acceptable, resolving the contradiction between noise reduction and heat dissipation capability.
3Object-generated harmful factors
If charging rate is reduced to meet noise emission limits, then noise emission level is reduced, but charging time increases
Solution Approach 1:
The system implements periodic adjustment of charging rates based on the vehicle's movement through different geographic zones. When entering quiet zones, the charging rate is reduced periodically; when leaving these zones, the charging rate increases. This periodic modulation allows the system to meet noise emission limits during sensitive periods/locations while maintaining higher charging rates during other periods, thereby minimizing overall charging time.
Data Source
AI summary
Charging control systems and methods are provided for controlling noise emission levels when charging an electrified vehicle. The nose emission levels may be controlled based on one or more user-defined rules associated with a custom quiet zone. The charging control systems may include one or more user interfaces designed to allow users to establish the user-defined rules which bound the custom quiet zone.