UWB Vehicle Positioning for Efficient Wireless Charging
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Solution Overview
Problem
Users face challenges in determining optimal charging efficiency and long charging times for electric vehicles using wireless charging, which can be inconvenient and time-consuming.
Innovation Solution
A wireless charging and positioning device for mobile vehicles, equipped with an ultra-wideband transceiver and charging coil, uses pulse wave signals to determine the distance to a power supply device and control charging only when within a designated range, improving charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging is used for electric vehicles, then charging convenience is improved, but charging efficiency is difficult to optimize and charging time is extended
Solution Approach 1:
The system uses an ultra-wideband transceiver to continuously detect the distance between the vehicle and power supply device, providing real-time feedback to the control unit. This feedback mechanism enables dynamic adjustment of charging parameters based on actual positioning data, optimizing charging efficiency while maintaining convenience
Solution Approach 2:
The vehicle equips itself with positioning and distance detection capabilities through the ultra-wideband transceiver and control unit. The system automatically determines optimal charging positions and adjusts charging parameters without external intervention, enabling the vehicle to serve its own charging needs efficiently
2Productivity
If wireless charging is used without position confirmation, then charging starts immediately, but charging efficiency is low due to improper positioning
Solution Approach 1:
The system performs distance detection and position confirmation using the ultra-wideband transceiver before initiating the charging process. By preliminarily determining optimal positioning, the system ensures that charging begins only when the vehicle is correctly positioned, maximizing charging efficiency from the start
Solution Approach 2:
The patent replaces traditional mechanical positioning methods with ultra-wideband radio wave-based distance detection. This substitution enables rapid, contactless positioning and distance measurement, minimizing positioning time while accurately determining optimal charging positions
3Power
If charging coil continuously receives power, then charging speed is fast, but energy is wasted when vehicle is not properly positioned
Solution Approach 1:
The charging system dynamically adjusts power transmission based on real-time distance detection data from the ultra-wideband transceiver. The control unit modulates the charging coil's power reception according to the vehicle's position relative to the power supply device, enabling fast charging when properly positioned while preventing energy waste during misalignment
Solution Approach 2:
The system implements continuous feedback control where the control unit receives distance information from the ultra-wideband transceiver and adjusts the charging coil's power reception accordingly. This feedback mechanism ensures optimal power transfer efficiency by activating full-power charging only when the vehicle is within the optimal charging range
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
This solution enhances battery charging efficiency by ensuring power is received only when the vehicle is optimally positioned relative to the power supply, reducing unnecessary charging time and improving overall efficiency.
Implementation Method 1
an ultra-wideband transceiver disposed at the mobile vehicle, and configured to transmit a pulse wave signal and receive a reflected signal in response to the pulse wave signal
Implementation Method 2
determine a distance between the mobile vehicle and the power supply device according to the reflected signal
Implementation Method 3
a charging coil disposed at the mobile vehicle, and controlled to charging a battery of the mobile vehicle
Data Source
AI summary
A wireless charging and positioning device, adapted to a mobile vehicle, includes: an ultra-wideband transceiver disposed at the mobile vehicle, and configured to transmit a pulse wave signal and receive a reflected signal in response to the pulse wave signal; a charging coil disposed at the mobile vehicle, and controlled to charging a battery of the mobile vehicle; and a signal processor connected to the ultra-wideband transceiver and the charging coil, the signal processor configured to control the ultra-wideband transceiver to transmit the pulse wave signal and obtain the reflected signal when the mobile vehicle locates in a designated area where a power supply device is disposed in, determine a distance between the mobile vehicle and the power supply device according to the reflected signal, and control the charging coil to receive power from the power supply device to charge the battery when the distance falls within a default range.