Apparatus and method for controlling wireless charger for vehicle
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Solution Overview
Problem
Existing wireless chargers for vehicles face challenges in minimizing user disturbance from operating noise of cooling fans while enhancing charging performance, as the noise cancellation is ineffective due to varying vehicle speed noise and limitations in cooling fan operation.
Innovation Solution
An apparatus and method that include a controller to set and adjust the duty ratio of the cooling fan based on vehicle type, user input, and auto-tuning operations, allowing for optimized noise reduction and heat dissipation from the wireless charging pad.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling fan is operated at a fixed duty ratio based on vehicle speed, then the charging performance is enhanced through heat dissipation, but the operating noise of the cooling fan cannot be effectively canceled from vehicle speed noise, causing user disturbance
Solution Approach 1:
The patent applies dynamics by making the cooling fan's duty ratio adjustable and adaptive rather than fixed. The system dynamically adjusts the duty ratio based on detected vehicle speed noise characteristics and user preferences, allowing the cooling fan operation to adapt to varying noise environments and maintain effective heat dissipation while minimizing user disturbance.
Solution Approach 2:
The patent changes the parameter of duty ratio from a fixed value to a variable parameter that can be adjusted based on noise conditions. By modifying the duty ratio parameter according to detected vehicle speed noise and user settings, the system optimizes both heat dissipation performance and noise cancellation effectiveness.
2Productivity
If the cooling fan duty ratio is increased to enhance heat dissipation, then charging performance is improved, but the operating noise becomes more prominent and disturbs the user
Solution Approach 1:
The system adjusts the duty ratio parameter to optimize the balance between charging performance and noise generation. By detecting vehicle speed noise characteristics and user preferences, the system determines an optimal duty ratio that maintains effective heat dissipation for charging while minimizing the prominence of cooling fan operating noise.
Solution Approach 2:
The patent implements feedback by detecting vehicle speed noise and using this information to adjust the cooling fan duty ratio. The system continuously monitors noise conditions and adapts the duty ratio accordingly, creating a closed-loop control that balances charging performance enhancement with noise disturbance reduction.
3Device complexity
If the cooling fan is unconditionally operated based on preset duty ratio, then the control system is simple, but it cannot adapt to different vehicle types and noise characteristics, reducing effectiveness
Solution Approach 1:
The system applies self-service by automatically detecting vehicle speed noise characteristics and adjusting the cooling fan duty ratio without requiring manual intervention. The controller autonomously adapts to different vehicle types and noise conditions by processing detected noise signals and determining appropriate duty ratios based on stored reference information.
Solution Approach 2:
The patent uses feedback mechanisms where the controller detects vehicle speed noise, compares it with reference noise levels, and automatically adjusts the duty ratio accordingly. This feedback loop enables the system to adapt to different vehicle types and noise characteristics while maintaining relatively simple control architecture.
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 solution effectively enhances charging performance while minimizing user disturbance from noise, by dynamically adjusting the cooling fan's duty ratio based on vehicle type and user preferences, thereby improving the overall charging experience.
Implementation Method 1
a cooling fan may be mounted on a rear surface of the wireless charger, and operated to reduce heat emitted from the wireless charger
Data Source
AI summary
An apparatus for controlling a wireless charger for a vehicle includes a communication device to receive an input from a user and information on the vehicle, and a controller to employ one of a first driving duty ratio of a cooling fan set based on the information on the vehicle, a second driving duty ratio of the cooling fan set based on the input from the user, or a third driving duty ratio of the cooling fan set through auto-tuning operation to operate the cooling fan, to enhance charging performance of the wireless charger while minimizing the feeling of the user bothered due to operating noise of a cooling fan.