Wireless Power Coil Module with Sensor-Based Mode Switching

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Solution Overview

Problem

Portable electronic devices face challenges in charging due to mismatched USB plugs and frequent damage from plugging in and out, and existing charging methods are inefficient and prone to aging.

Innovation Solution

A wireless power transmission device equipped with a sensor, control module, and rectifying and switching module that automatically selects between power supply and receiving modes based on position and direction, using a coil module to convert or receive power wirelessly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If USB connectors are used for charging, then power transmission is achieved, but the connectors are easily damaged after frequent plugging and out

Engineering Contradiction:

Improveconnector durabilityVSAvoidcharging convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical USB connector system with a wireless electromagnetic field-based power transmission system. The transmitting device uses a coil to generate a magnetic field, and the receiving device uses a coil to receive power wirelessly, eliminating all mechanical contact and physical wear associated with plugging and unplugging connectors.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an electromagnetic field as an intermediary medium for power transmission. Instead of direct physical contact between connectors, power is transmitted through the air via magnetic coupling between transmitting and receiving coils, serving as a non-contact intermediary that eliminates mechanical wear.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If USB connectors are used for charging, then power transmission is achieved, but aging of the USB plug and wires is generated after long time used

Engineering Contradiction:

Improveconnector lifespanVSAvoidusage time

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent replaces the mechanical USB connector and wire system with a wireless electromagnetic field-based power transmission system. The transmitting device uses a coil to generate a magnetic field, and the receiving device uses a coil to receive power wirelessly, eliminating all mechanical contact and physical wear associated with plugging and unplugging connectors.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If wireless power transmission is implemented, then connector wear is eliminated, but device complexity increases due to sensor and control modules

Engineering Contradiction:

Improvecharging component durabilityVSAvoidsystem structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent designs the wireless power transmission device with multi-functionality. The sensor module not only detects the position of the charging device but also enables automatic mode switching between power supply and power receiving modes. The control module integrates multiple functions including mode determination, sensor data processing, and power management, reducing the need for separate dedicated components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Productivity

If automatic mode switching is implemented, then charging efficiency is improved, but control system complexity increases

Engineering Contradiction:

Improvecharging efficiencyVSAvoidcontrol module structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements a self-service control system where the device automatically determines its own operational mode based on sensor-detected position information. The control module autonomously switches between power supply mode and power receiving mode without requiring manual user input or complex external control systems, achieving efficient automatic adaptation to charging conditions.

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

Enables efficient and automatic wireless power transmission and reception, reducing wear and tear on charging components and improving charging efficiency by eliminating the need for physical connectors.

Implementation Method 1

converting power energy to first wireless power energy by using the coil module

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

receiving second wireless power energy from a second external device by using the coil module

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS9831725B2Wireless communication apparatus and antenna system thereof

Publication Date: 2017.11.28 ASUSTEK COMPUTER INC

AI summary

A wireless power supply and power receiving device includes a sensor, a control module, a coil module and a rectifying and switching module. The control module determines a position or a direction of the wireless power supply and power receiving device according to the sensor, and the rectifying and switching module selectively operates in a wireless power supply mode or a wireless power receiving mode according to the position or the direction. When in the wireless power supply mode, the rectifying and switching module converts the power energy to wireless power energy to provide power to a first external device by using the coil module. When in the wireless power receiving mode, the rectifying and switching module receives wireless power energy from a second external device via the coil module.