Wireless Charging Coil Alignment via Dynamic Positioning

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Solution Overview

Problem

Existing wireless charging devices face inefficiencies due to the need for precise alignment between transmitting and receiving coils, leading to suboptimal energy transfer and extended charging times, especially when the coils are not optimally positioned.

Innovation Solution

A wireless charging device with a transmitting coil that can move based on real-time state parameters and position information, using a control component to adjust its position relative to the receiving coil until optimal alignment is achieved, thereby improving charging efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the transmitting coil is fixed in position, then the device structure is simple, but the charging efficiency is low when coils are not aligned

Engineering Contradiction:
Improvecharging efficiencyVSAvoiddevice structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The transmitting coil is made movable through a driving component that can adjust its position based on real-time position information and state parameters. The control component dynamically controls the driving component to move the transmitting coil until the state parameter (power ratio) is within the preset range, optimizing charging efficiency while maintaining manageable system complexity through automated control.

Inventive Principle:
Principle #15Dynamics

2Productivity

If the transmitting coil is moved to achieve optimal alignment, then the charging efficiency is improved, but the device complexity increases

Engineering Contradiction:
Improvecharging efficiencyVSAvoiddevice structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system continuously monitors the state parameter (power ratio between receiving and transmitting coils) and position information, feeding this data back to the control component. The control component adjusts the transmitting coil position based on this feedback until the state parameter is within the preset range (70%-100%), achieving optimal alignment through closed-loop control that balances improved charging efficiency with automated management of system complexity.

Inventive Principle:
Principle #23Feedback

3Loss of energy

If precise alignment is required, then the energy transfer is optimal, but the ease of operation is reduced

Engineering Contradiction:
Improveenergy dissipationVSAvoidalignment operation
Core Design Contradiction:
Loss of energyVSEase of operation

Solution Approach 1:

The system automatically performs the alignment task through the control component that controls the driving component to move the transmitting coil based on position information and state parameters. The system serves itself by autonomously achieving optimal alignment without requiring manual intervention, thereby reducing energy dissipation while maintaining ease of operation through automation.

Inventive Principle:
Principle #25Self-service

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 charging efficiency by ensuring the transmitting coil is aligned within a preset range, reducing energy dissipation and shortening charging time.

Implementation Method 1

The transmission of electrical energy can be achieved through the electromagnetic induction of the transmitting coil and the receiving coil

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS11245292B2Wireless charging device and charging system
Publication Date: 2022.02.08 BOE TECHNOLOGY GROUP CO LTD
  • US11245292B2 patent drawing
  • US11245292B2 patent drawing
  • US11245292B2 patent drawing

AI summary

The present disclosure provides a wireless charging device including a transmitting coil, a power collection component, a position acquiring component, a driving component and a control component. The transmitting coil is configured to transmit electrical energy to a receiving coil of a terminal. The power collection component is configured to acquire state parameters of the transmitting coil and the receiving coil in a charging state in real time. The position acquisition component is configured to acquire position information of the receiving coil sent by the terminal and position information of the transmitting coil. The driving component is configured to drive the transmitting coil to move. The control component is configured to control the driving component to drive the transmitting coil to move according to the position information of the receiving coil, the position information of the transmitting coil, and the state parameter.