Wireless Charger Authentication via Charging Coil Challenge Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional mechanical charging methods for battery-powered devices are unreliable, costly, complex, and prone to wear and corrosion, limiting the efficiency and autonomy of devices like drones and robots.
Innovation Solution
A wireless charging system that includes wireless chargers broadcasting charging station data, allowing devices to navigate to available chargers based on location and availability, and employs dual-band authentication using wireless communication and electrical measurements to verify device authorization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical charging methods are used for battery-powered devices, then charging can be performed, but the system suffers from unreliability, mechanical wear, corrosion, and high complexity
Solution Approach 1:
The patent replaces mechanical charging connections with wireless electromagnetic energy transfer. The transmitting charger uses electromagnetic fields to transfer power to the receiving device without physical contact, eliminating mechanical wear, corrosion, and connection reliability issues while maintaining effective charging functionality
2Productivity
If wireless charging is implemented without authentication, then charging speed and convenience are improved, but system security and efficiency deteriorate due to unauthorized devices
Solution Approach 1:
The patent implements authentication and device identification procedures before initiating wireless power transfer. The transmitting charger verifies the receiving device's authorization status in advance, ensuring only authenticated devices receive power, thereby maintaining both charging efficiency and system security
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
Enhances the reliability and efficiency of charging processes by reducing mechanical wear, minimizing human intervention, and ensuring secure, contactless power transfer for autonomous devices.
Implementation Method 1
a transmit charging coil (205) included in a charger (1011), a receive charging coil (303) included in the vehicle (301)... The transmit charging coil (205) is driven by a charger (1011) to deliver wireless energy to the receive charging coil (303)
Data Source
AI summary
An authentication between a wireless charger and a device configured to receive wireless energy from the wireless charger includes establishing a wireless data channel between the wireless charger and the device. An authentication challenge signal is driven onto a transmit charging coil of the wireless charger and a receive charging coil of the device is configured to receive the authentication challenge signal. The device sends an authentication response signal to the wireless charger based at least in part on the authentication challenge signal.