Wireless Charging Apparatus with Bidirectional Power Relay
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Solution Overview
Problem
Conventional wireless charging systems are limited as they require a fixed installation and cannot be carried by users, and they lack the ability to both transmit and receive power independently without an external power source, restricting their portability and functionality.
Innovation Solution
A wireless charging apparatus that includes a resonator, a power transceiver with both transmitter and receiver capabilities, and a controller that allows for user-selectable modes of power transmission, reception, and relay, enabling the device to operate without an external power source and facilitate power transfer between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a wireless power transmitter is fixedly installed to transmit electric power, then power transmission capability is improved, but portability deteriorates
Solution Approach 1:
The wireless charging apparatus is designed to perform multiple functions: it can transmit power wirelessly, receive power wirelessly, and relay power between devices. This multi-functionality allows a single portable device to replace both fixed transmitters and receivers, resolving the contradiction between power transmission capability and portability.
Solution Approach 2:
The patent combines the transmitter and receiver functionalities into a single integrated wireless charging apparatus. By merging these previously separate components into one portable device, the system achieves both power transmission capability and portability simultaneously.
2Reliability
If a wireless power transmitter uses an external power source, then power transmission stability is improved, but device complexity and portability deteriorate
Solution Approach 1:
The wireless charging apparatus can charge itself by receiving power from another apparatus and storing it in its battery. This self-service capability eliminates the need for external power sources, reducing device complexity while maintaining operational reliability through the built-in battery.
Solution Approach 2:
The apparatus dynamically switches between transmitting and receiving modes based on user selection and operational needs. This dynamic operation allows the device to function as either a transmitter or receiver, eliminating the need for fixed external power infrastructure.
3Ease of operation
If contact terminals are used for charging, then charging connection is improved, but contamination and moisture exposure increase
Solution Approach 1:
The patent replaces the mechanical contact terminal system with a wireless electromagnetic induction system. By substituting the mechanical connection method with wireless power transmission through coils, the system maintains charging functionality while eliminating exposure to contamination and moisture that affect contact terminals.
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 portable wireless power transmission, reception, and relay, allowing users to charge devices on the go and share power between apparatuses, enhancing portability and usability.
Implementation Method 1
a resonance scheme using a resonance... Electromagnetic wave containing electrical energy have also been made to resonate instead of making sounds resonate. The resonated electrical energy is directly transferred only when there is a device having a resonance frequency
Implementation Method 2
an electromagnetic induction scheme using a coil... When a magnet is moved in a coil, induction current is generated. By using the induction current, a magnetic field is generated at a transmission side, and electric current is induced according to a change of the magnetic field
Data Source
AI summary
A wireless charging apparatus and a wireless charging method are provided. The method includes selecting at least one of a wireless power reception mode and a wireless power transmission mode by a wireless charging apparatus, wirelessly receiving electric power when the wireless power reception mode is selected, and wirelessly transmitting electric power when the wireless power transmission mode is selected.