Wireless Power Receiver Abnormal Condition Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless charging technologies lack effective control mechanisms for abnormal conditions such as over-temperature, overvoltage, and overcurrent in wireless power receivers, which can lead to improper charging and potential device damage.
Innovation Solution
A method and apparatus for controlling abnormal states in wireless power receivers, involving temperature measurement and monitoring, with a controller that determines if the temperature exceeds a threshold, triggering the load switch to turn off power transmission to prevent damage and ensure safe charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power transmission is implemented without abnormal condition control, then wireless charging convenience is improved, but device safety and reliability deteriorate due to potential over-temperature, overvoltage, and overcurrent damage
Solution Approach 1:
The patent implements a feedback control mechanism where the wireless power receiver continuously monitors temperature, voltage, and current parameters during charging. When abnormal conditions are detected (such as temperature exceeding threshold), the receiver sends feedback signals to the transmitter to adjust or terminate power transmission, thereby ensuring device safety while maintaining wireless charging convenience
Solution Approach 2:
The patent establishes predetermined safety thresholds for temperature, voltage, and current parameters before wireless charging begins. The system proactively monitors these parameters and prepares to take corrective action (reducing or stopping power transmission) before actual damage can occur, thus preventing reliability issues while preserving operational convenience
2Reliability
If temperature monitoring frequency is increased to detect abnormal conditions earlier, then safety response time is improved, but power transmission efficiency deteriorates due to more frequent measurements
Solution Approach 1:
The patent implements dynamic temperature monitoring where the measurement frequency adapts based on the charging state and temperature levels. During normal operation, monitoring occurs at standard intervals to minimize energy consumption. When temperature approaches threshold values or abnormal conditions are detected, the monitoring frequency automatically increases to provide faster safety response, thus balancing reliability and energy efficiency
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 solution effectively prevents abnormal charging states by detecting and responding to temperature, voltage, and current anomalies, ensuring stable and safe wireless power transmission.
Implementation Method 1
The wireless charging technology largely includes an electromagnetic induction scheme using a coil
Implementation Method 2
a resonance scheme using a resonance
Implementation Method 3
measuring a temperature by a period shorter than a previous measurement period when a temperature measured by the wireless PRU
Data Source
AI summary
A method for controlling an abnormal state of a wireless Power Receiving Unit (PRU) is provided. The method includes measuring a temperature by a period shorter than a previous measurement period when a temperature measured by the wireless PRU in response to a transmission of power from a wireless Power Transmitting Unit (PTU) is higher than a temperature required to be monitored; determining whether the measured temperature is higher than a temperature at which a load switch connected to a charging unit is turned off if the measured temperature is equal to or higher than the temperature required to be monitored; and turning off the load switch if the measured temperature is higher than the temperature at which the load switch is turned off.