Wireless Vehicle Charging Power Control During Passenger Pickup
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Solution Overview
Problem
Existing non-contact power supply systems for vehicles do not adequately consider the impact of electromagnetic waves from surrounding power supply apparatuses, leading to insufficient reduction in electromagnetic wave effects on vehicle passengers during pickup or dropoff operations.
Innovation Solution
A power supply apparatus that detects pickup/dropoff operations and adjusts power transmission based on the number of surrounding vehicles, potentially stopping power if a passenger with a pacemaker is detected, and considers the number of passengers to determine the appropriate power reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If power is lowered to reduce electromagnetic waves during pickup/dropoff, then the effect on electronic equipment is reduced, but the power transmission efficiency deteriorates
Solution Approach 1:
The power transmission apparatus dynamically adjusts the transmitted power level based on real-time detection of pickup/dropoff operations and surrounding vehicle conditions. The control unit varies power transmission in response to changing environmental factors, optimizing the balance between reducing electromagnetic wave effects and maintaining transmission efficiency
Solution Approach 2:
The system changes the power transmission parameter (power level) based on detected conditions. When pickup/dropoff is detected and surrounding vehicles are present, the power level is adjusted to an appropriate level that reduces electromagnetic wave effects while considering the number of surrounding vehicles
2Object-affected harmful factors
If power is lowered to reduce electromagnetic waves, then the harmful effect is reduced, but the productivity of power supply deteriorates
Solution Approach 1:
The system dynamically adapts power transmission levels to operational context. During pickup/dropoff with surrounding vehicles, power is adjusted to appropriate levels to protect passengers while minimizing impact on overall power supply productivity
Solution Approach 2:
The control unit receives feedback from detection units about pickup/dropoff operations and surrounding vehicle presence, then adjusts power transmission accordingly. This feedback mechanism ensures power supply productivity is maintained while reducing electromagnetic wave effects when necessary
3Object-affected harmful factors
If the number of surrounding vehicles is considered for power adjustment, then the reduction of electromagnetic waves is improved, but the device complexity increases
Solution Approach 1:
The detection unit serves multiple functions: detecting pickup/dropoff operations, detecting surrounding vehicles, and providing input for power adjustment decisions. This multi-functionality reduces the need for separate specialized components, managing device complexity while improving electromagnetic wave reduction
Solution Approach 2:
The control unit combines multiple detection inputs (pickup/dropoff status, surrounding vehicle count) into a unified power adjustment decision. By merging these functions in the control logic rather than implementing separate control systems, the patent reduces overall device complexity
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
Effectively reduces the impact of electromagnetic waves on vehicle passengers during power supply operations by dynamically adjusting power transmission in response to vehicle activities and surrounding power supply conditions.
Implementation Method 1
a power transmission apparatus configured to transmit power to a power reception apparatus of the vehicle by non-contact
Data Source
AI summary
The power supply apparatus includes a power transmission apparatus configured to transmit power to a power reception apparatus of the vehicle by non-contact and a processor configured to control the power transmission apparatus, detect a pickup/dropoff operation at the vehicle when power is being supplied by non-contact from the power supply apparatus to the vehicle, and detect a number of surrounding vehicles being supplied with power by non-contact in a predetermined range at surroundings of the power supply apparatus. The processor is configured to decrease power transmitted from the power transmission apparatus to the power reception apparatus when detecting a pickup/dropoff operation, and determine an amount of decrease of the transmitted power based on the number of surrounding vehicles.