Wireless Charging Power Compliance via Dynamic Allocation
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Solution Overview
Problem
Existing wireless power systems face issues such as power mismatch between secondary devices and primary supplies, leading to improper charging or shutdowns, and require multiple power supplies for multiple devices, which is costly and inconvenient.
Innovation Solution
Implementing a communication system within wireless power systems where secondary devices and power supplies can exchange power requirements and capabilities, enabling dynamic power distribution and alerts for mismatches, allowing a single power supply to charge multiple devices efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power supply is used to charge multiple devices, then device complexity and cost are reduced, but power distribution control and matching become more difficult
Solution Approach 1:
The system implements bidirectional communication between the power supply and secondary devices, where devices communicate power requirements to the supply and the supply communicates power capacity to devices. This feedback mechanism enables automatic power distribution and compliance management, resolving the control difficulty while maintaining a single power supply.
Solution Approach 2:
The power supply dynamically adjusts power distribution based on real-time device requirements and supply capacity. The system can allocate power dynamically among multiple devices, scale power levels, and adapt to changing conditions, enabling a single supply to efficiently serve multiple devices with varying power needs.
2Reliability
If power supply capacity is increased to meet higher device requirements, then power compliance is improved, but system cost and complexity increase
Solution Approach 1:
Rather than providing maximum power capacity continuously, the system dynamically scales power output to match actual device requirements. The power supply can operate at different power levels and efficiently allocate available capacity, ensuring compliance without requiring excessive built-in capacity.
Solution Approach 2:
The communication protocol enables a single power supply to serve multiple functions: charging multiple devices simultaneously, providing power compliance verification, delivering alerts, and dynamically adjusting power levels. This multi-functionality ensures power compliance across various scenarios without requiring specialized high-capacity supplies for each case.
3Power
If multiple power supplies are used for multiple devices, then power requirements are met, but system cost and storage difficulty increase
Solution Approach 1:
The system merges multiple power supply functions into a single unit that can serve multiple devices. By implementing communication and automatic power distribution, one power supply combines the capabilities of what would traditionally require multiple separate supplies, reducing quantity while maintaining adequate power capacity.
Solution Approach 2:
The power supply dynamically allocates power capacity among multiple devices based on their requirements. This dynamic scaling allows a single supply with moderate capacity to effectively provide appropriate power levels to multiple devices, replacing the need for multiple fixed-capacity supplies.
4Reliability
If power distribution is automated through communication protocols, then power compliance is improved, but system complexity increases
Solution Approach 1:
The system enables devices and power supplies to self-identify and self-negotiate power requirements and capabilities through communication protocols. Each device communicates its needs and the supply communicates its capacity, allowing automatic compliance verification and alert generation without complex external control systems.
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 ensures proper power compliance and distribution among multiple devices, providing alerts for power mismatches and enabling efficient charging of multiple devices with a single power supply, reducing costs and user errors.
Implementation Method 1
The primary inductively powers the secondary devices when they are brought into proximity with the primary
Data Source
AI summary
A method of controlling an inductive charging system on those occasions in which the combined power requests of a plurality of secondary devices exceed the power capacity of the power supply. The method includes at least one of (a) powering each device at a level below its requested level, (b) powering each device sequentially, and/or (c) powering each device in a repetitive pattern (e.g. time multiplexing). Also disclosed is a method of controlling an inductive charging system at least partially as a function of information received from the power management unit (PMU) of each secondary device.