Roadside Wireless Charging Alignment Using GPS and Short-Range Pairing
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Solution Overview
Problem
Existing wireless power transmission systems face challenges in accurately aligning the positions of the power transmitting and receiving sides, particularly during short-range wireless communication, which is crucial for efficient charging while a vehicle is traveling.
Innovation Solution
A wireless power transmission system utilizing magnetic field resonance coupling with a supply device installed on the road and a vehicle equipped with a power receiving device, employing both short-range and wide-area wireless communication to align and maintain precise positioning for efficient power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If short-range wireless communication is used for pairing power transmitting and receiving devices, then power transmission can be established, but position alignment precision deteriorates making it difficult to maintain accurate positioning during vehicle travel
Solution Approach 1:
The communication system is segmented into two distinct parts: short-range wireless communication for reliable power transmission pairing, and GPS satellite communication for high-precision position alignment. Each communication segment handles its specific function optimally, with the GPS system providing accurate location data that complements the short-range communication's pairing capability.
Solution Approach 2:
GPS satellite signals serve as an intermediary mechanism that bridges the gap between the vehicle's position and the power transmitting device's location. The GPS receiver acquires satellite signals to determine precise position information, which is then used to calculate alignment between the vehicle-mounted power receiving device and the road-mounted power transmitting device.
2Measurement precision
If multiple communication units are deployed to improve position alignment, then positioning accuracy improves, but device complexity increases
Solution Approach 1:
The power transmitting device and power receiving device are equipped with both short-range wireless communication units and GPS receivers, making them multi-functional. This universal design allows the same devices to perform both power transmission pairing and high-precision position alignment functions without requiring separate dedicated systems.
Solution Approach 2:
The system uses the vehicle's existing GPS navigation system to provide position alignment information for wireless power transmission. Instead of adding a completely new positioning system, the invention leverages the vehicle's own GPS capability to serve the dual purpose of navigation and power transmission alignment.
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 high-precision alignment of the power transmitting and receiving sides, allowing for uninterrupted and efficient power transmission to vehicles while traveling, enhancing the reliability and efficiency of wireless charging.
Implementation Method 1
A wireless power transmission system utilizing magnetic field resonance coupling
Implementation Method 2
a primary coil that generates a magnetic field for power transmission to the vehicle, and a secondary coil that receives power transmitted from the primary coil in a non-contact manner
Data Source
AI summary
The wireless power transmission system according to the present disclosure includes: a supply device installed on the road side and transmitting electric power; a vehicle equipped with a power receiving device and traveling on the road; wherein in the wireless power transmission system, a power receiving device receives power from a supply device and wirelessly transmits the power to a vehicle, the supply device is a primary coil that generates a magnetic field for transmitting power to the vehicle; a first communication device that performs short-range wireless communication with the vehicle; the vehicle includes a secondary coil that receives power transmitted contactlessly from the primary coil; a second communication device that performs short-range wireless communication with the supply device; in the first and second communication devices, one communication device has a single communication unit, and the other communication device has a plurality of communication units.