Cascading Wireless Power Allocation for Multi-Device Charging

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Solution Overview

Problem

Existing wireless charging systems using magnetic induction technology are limited to one-to-one transmitter-receiver relationships, while magnetic resonance technology allows for multiple devices to charge simultaneously but lacks efficient power allocation and priority management among multiple receivers.

Innovation Solution

A cascading charging mechanism that prioritizes devices based on their battery charge levels, allocating power proportionally to ensure efficient charging of multiple wireless devices concurrently, allowing devices with lower battery levels to receive priority and enabling simultaneous data synchronization with a network drive during charging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If magnetic induction technology is used for wireless charging, then the charging system is simple to implement, but it is limited to one-to-one transmitter-receiver relationships and cannot charge multiple devices simultaneously

Engineering Contradiction:
Improvenumber of devices charged simultaneouslyVSAvoidnumber of transmitters required
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple transmitter functions into a single transmitter by implementing multiple virtual transmit channels within one physical transmitter. This allows the single transmitter to serve multiple receiver devices simultaneously through magnetic resonance, eliminating the need for multiple separate transmitters while maintaining the ability to charge multiple devices at once.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces a new dimension of operation by creating multiple virtual channels within a single physical transmitter. Instead of adding more physical transmitters (spatial dimension), the system multiplexes multiple charging channels within the same physical device, effectively adding a functional dimension that enables one-to-many charging relationships.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If multiple transmitters are used to charge multiple devices with magnetic induction technology, then each device can be charged, but the system complexity increases and power allocation becomes inefficient

Engineering Contradiction:
Improvecharging efficiencyVSAvoidnumber of transmitters
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines multiple transmitter functions into a single physical transmitter with multiple virtual channels. This merging reduces hardware complexity while maintaining the ability to charge multiple devices simultaneously, thereby improving charging efficiency without increasing system complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single transmitter is designed to perform multiple functions by supporting multiple virtual transmit channels, each capable of independently charging a different receiver device. This multi-functionality allows one transmitter to replace what would traditionally require multiple transmitters, improving productivity while reducing device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If power is allocated equally to multiple devices, then simple allocation logic is used, but devices with lower battery levels do not receive priority charging

Engineering Contradiction:
Improvepower allocation logicVSAvoidpriority-based charging
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent implements dynamic power allocation where the transmitter adjusts power distribution to multiple receivers based on their real-time charging needs and battery levels. The system continuously monitors receiver status and dynamically reallocates power across virtual channels, ensuring that devices requiring more power receive appropriate priority while maintaining manageable allocation logic through automated control.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system incorporates feedback mechanisms where receivers communicate their battery status and charging requirements back to the transmitter. The transmitter uses this feedback information to intelligently allocate power across multiple virtual channels, prioritizing devices with lower battery levels while maintaining simple overall operation through automated decision-making algorithms.

Inventive Principle:
Principle #23Feedback

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 enables efficient power allocation and priority-based charging, enhancing user experience by ensuring devices with lower battery levels are charged first, while allowing multiple devices to communicate and synchronize data during charging, thus optimizing the charging process.

Implementation Method 1

Wireless charging using magnetic resonance (MR) technology enables multiple receiver devices positioned in proximity to the transmitter to be charged simultaneously

Methodology Applied
Scientific EffectMagnetic resonance: Resonance

Data Source

PatentEP2880737B1Wireless power transfer
Publication Date: 2019.05.15 SANDISK TECHNOLOGIES LLC
  • EP2880737B1 patent drawingFigure 1~2
  • EP2880737B1 patent drawingFigure 3~4
  • EP2880737B1 patent drawingFigure 5

AI summary

Systems and methods are disclosed that enable power regulation during wireless power transfer, such as during magnetic resonance (MR) charging of one or more devices from a power transfer device, by applying a cascading charging mechanism that includes identifying a priority order of charging of each of the one or more devices to allocate wirelessly transmitted power to the one or more devices.