Wireless Power Transmission Adaptive Control for Battery Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transmission systems face inefficiencies due to variations in battery charging currents and power transmission efficiency, as they lack adaptive control mechanisms to adjust power based on real-time charging modes and efficiency offsets.
Innovation Solution
A wireless power transmission apparatus and method that includes a measurer to monitor current in the source resonator, a communication unit to receive charging current data from the battery, and a power controller to adjust power transmission based on measured and received current values, determining charging modes and calculating power transmission efficiency offsets to generate pulse signals for optimal power conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If fixed power transmission is used, then system simplicity is maintained, but power transmission efficiency deteriorates due to inability to adapt to varying battery charging requirements
Solution Approach 1:
The patent implements feedback control by measuring the charging current of the battery and using this information to adjust the power transmission level. The controller receives charging current information from the battery, compares it with reference values, and adjusts the power transmission accordingly to maintain optimal charging efficiency while avoiding overcharging or undercharging conditions.
Solution Approach 2:
The patent applies dynamics by making the power transmission level adjustable and variable rather than fixed. The system dynamically changes the power transmission characteristics based on real-time battery charging current measurements, allowing the transmission parameters to adapt to varying charging requirements at different battery states of charge.
2Productivity
If power transmission is increased to speed up charging, then charging speed improves, but power transmission efficiency deteriorates due to mismatch with battery charging mode
Solution Approach 1:
The system uses feedback control to monitor the battery charging current and adjust power transmission levels accordingly. By continuously measuring the charging current and comparing it with reference values, the controller optimizes the power transmission to match the battery's actual charging needs, ensuring high charging speed while maintaining efficient power transfer without energy waste from mismatched transmission levels.
Solution Approach 2:
The patent changes the power transmission parameters dynamically based on the battery's charging state. By adjusting transmission parameters according to the measured charging current and battery conditions, the system optimizes both charging speed and power transmission efficiency, preventing energy loss that would occur with fixed or inappropriate transmission levels.
3Loss of energy
If adaptive power control is implemented, then power transmission efficiency improves, but device complexity increases due to additional measurement and control components
Solution Approach 1:
The patent implements feedback control by measuring the charging current of the battery and using this information to adjust the power transmission level. The controller receives charging current information from the battery, compares it with reference values, and adjusts the power transmission accordingly to maintain optimal charging efficiency while avoiding overcharging or undercharging conditions.
Solution Approach 2:
The system employs self-service mechanisms where the battery itself provides feedback through its charging current characteristics. The controller uses this self-provided information from the battery to automatically adjust power transmission, reducing the need for complex external monitoring systems while maintaining efficient adaptive control.
4Measurement precision
If power transmission is adjusted based on charging current, then charging precision improves, but measurement and control complexity increases
Solution Approach 1:
The patent implements feedback control by measuring the charging current of the battery and using this information to adjust the power transmission level. The controller receives charging current information from the battery, compares it with reference values, and adjusts the power transmission accordingly to maintain optimal charging efficiency while avoiding overcharging or undercharging conditions.
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 power transmission efficiency by dynamically adjusting power based on charging mode and efficiency offsets, ensuring efficient energy transfer and precise control of power delivery to batteries.
Implementation Method 1
One wireless power transmission technology uses resonance characteristics of radio-frequency (RF) devices. A wireless power transmission system using resonance characteristics may include a source configured to supply power, and a target configured to receive the supplied power.
Implementation Method 2
a source resonator configured to transmit power to a target resonator through resonance
Data Source
AI summary
A wireless power transmission apparatus includes a measurer configured to measure a value of a current flowing in a source resonator, a communication unit configured to receive a value of a charging current of a battery from a wireless power reception apparatus, and a power controller configured to control an amount of power to be transmitted by the source resonator based on either one or both of the value of the current measured by the measurer and the value of the charging current received by the communication unit. The value of the charging current of the battery varies as the battery is charged.