Wireless Power Coil Switching for Vehicle Position Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power supply systems waste energy by transmitting power from multiple coil parts even when no vehicle is stopped, leading to inefficiency.
Innovation Solution
A power supply device with first and second coil parts that determine the position of a movable object by receiving power transmission requests, acquiring power reception information, and controlling power transmission based on the received information to minimize waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power is transmitted from multiple coil parts to identify the parking space, then the vehicle position can be determined, but power is wasted from coil parts where no vehicles are stopped
Solution Approach 1:
Instead of having coil parts transmit power to vehicles, the invention inverts the approach by having vehicles transmit power back to the ground. The vehicle's power transmission enables the ground system to detect which coil part receives power, thereby identifying the vehicle's position without requiring all coil parts to continuously transmit power.
Solution Approach 2:
The vehicle itself serves as the active element by transmitting power from its power supply device. This self-service approach allows the vehicle to participate in the position identification process, eliminating the need for the ground system to actively probe each coil part with power transmission.
2Reliability
If all coil parts transmit power continuously, then reliable power supply is ensured, but energy efficiency deteriorates
Solution Approach 1:
The system transitions from a static state where all coil parts continuously transmit power to a dynamic state where only the specific coil part under the vehicle transmits power. The control unit dynamically switches between coil parts based on real-time vehicle position detection, ensuring reliable power supply only where needed.
Solution Approach 2:
The ground system periodically detects vehicle presence and activates the appropriate coil part accordingly. Instead of continuous operation, the system uses periodic detection and selective activation, maintaining reliability through timely power transmission while reducing overall energy consumption.
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 supplies power to the movable object by identifying the appropriate coil part for power transmission, reducing energy waste when multiple coil parts are installed.
Implementation Method 1
a first coil part and a second coil part that each wirelessly transmit and receive power to and from a movable object
Data Source
AI summary
A power supply device includes a first coil part and a second coil part, a power transmission request part configured to transmit a power transmission request to the movable object, a power reception information acquisition part configured to acquire first power reception information of the first coil part and second power reception information of the second coil part, a movable object position determination part configured to determine whether the movable object is positioned at a first power supply position or a second power supply position, and a power transmission control part configured to cause the first coil part to transmit power when it is determined that the movable object is positioned at the first power supply position, and to cause the second coil part to transmit power when it is determined that the movable object is positioned at the second power supply position.