Wireless Power Transmitter Load Balancing via Centralized Handoff

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Solution Overview

Problem

Existing wireless power transmission systems face challenges in efficiently managing load balancing and handoff between multiple systems, leading to inefficiencies in power distribution and potential device disconnection issues due to load imbalances and signal strength variations.

Innovation Solution

Implementing a load balancing and handoff technique that involves monitoring transmitter load information across overlapping coverage areas, detecting imbalances, and directing wireless power transmission systems to adjust operations such as client handover or power allocation to maintain optimal load distribution, using a centralized or distributed system for decision-making.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If wireless power transmission systems operate independently without coordination, then each system can maintain simple operation, but load imbalance occurs leading to inefficient power distribution and device disconnections

Engineering Contradiction:
Improvepower distribution efficiencyVSAvoidsystem coordination complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent merges multiple independent wireless power transmission systems into a coordinated network where systems exchange load information and cooperate to serve devices. The load balancing manager combines information from multiple transmitters to make centralized handoff decisions, transforming independent operations into a unified collaborative system that improves power distribution efficiency while managing complexity through structured coordination protocols.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces a load balancing manager as an intermediary component that mediates between multiple wireless power transmission systems. This intermediary collects load information from various transmitters, processes the data to detect imbalances, and directs handoff operations to resolve imbalances. The mediator absorbs the coordination complexity, allowing individual transmitters to operate relatively simply while achieving system-wide load balance and improved power distribution efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If wireless power transmission systems serve devices independently, then handoff management is simplified, but device disconnections occur due to load imbalances and signal strength variations

Engineering Contradiction:
Improvedevice connection stabilityVSAvoidhandoff management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements feedback mechanisms where wireless power transmission systems continuously monitor and report their load conditions to the load balancing manager. The manager uses this feedback to detect load imbalances and trigger appropriate handoff operations. This closed-loop feedback system ensures devices remain connected to transmitters with adequate capacity and signal strength, improving connection stability while the structured feedback protocol manages the complexity of coordinated handoffs.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent performs preliminary load balancing assessments and handoff preparations before devices experience connection issues. The load balancing manager proactively monitors transmitter loads and signal conditions, initiating handoff operations in advance to prevent device disconnections. This preliminary action approach maintains reliable device connections by addressing potential problems before they manifest, while the advance planning nature of the handoff process helps manage coordination complexity.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If load balancing coordination is implemented across multiple wireless power transmission systems, then power distribution efficiency improves, but system complexity increases

Engineering Contradiction:
Improvepower distribution efficiencyVSAvoidcoordination system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the load balancing functionality into distinct modular components: individual transmitter load monitoring modules, a centralized load balancing manager, and handoff execution modules at each transmitter. This segmentation allows each component to perform a specific function independently, reducing the complexity any single element must handle while achieving system-wide coordination. The modular structure enables improved power distribution efficiency through coordinated operation without requiring any single component to manage all complexity alone.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The load balancing manager serves as an intermediary that centralizes the coordination logic, absorbing the complexity of load balancing decisions. Individual transmitters communicate their load status to the manager through standardized interfaces, and the manager returns handoff directives. This intermediary architecture improves power distribution efficiency by enabling system-wide load optimization while containing coordination complexity within the manager, allowing transmitters to maintain simpler operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3320550B1Techniques for wireless power transmission system handoff and load balancing
Publication Date: 2020.03.11 OSSIA INC
  • EP3320550B1 patent drawingFigure 1
  • EP3320550B1 patent drawingFigure 2
  • EP3320550B1 patent drawingFigure 3

AI summary

Techniques are described herein for load balancing wireless power receiver clients over multiple wireless power transmission systems in a wireless power delivery environment. In some embodiments, a method is described. The method includes identifying transmitter load information associated with at least two wireless power transmission systems of the multiple wireless power transmission systems (810), detecting a load imbalance between the at least two wireless power transmission systems based, at least in part, on the transmitter load information (812), and determining one or more operations for improving the load imbalance (814). The method further includes directing one or more of the at least two wireless power transmission systems to perform the one or more operations (816).