Bidirectional Wireless Power Transfer Device Switching Circuit
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Solution Overview
Problem
Existing wireless charging devices only allow unidirectional power transfer, failing to facilitate bidirectional power transmission and reception, limiting their efficiency in modern handheld devices that require increasing power consumption.
Innovation Solution
A bidirectional wireless power transfer device comprising a first and second transfer unit with signal and power terminals, a selector, and a power supply unit mounted on a circuit board, enabling switching between transmitter and receiver operations for bidirectional power transfer through series or parallel connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wireless charging device uses a transmitter to transfer electrical power to an electronic device, then power transfer is achieved, but the transfer is unidirectional only and cannot receive power
Solution Approach 1:
The patent combines both transmitter and receiver functions into a single wireless charging device. The device includes a power supply unit, a transfer unit with switching circuitry, and control logic that enables the same hardware to operate in both transmitting and receiving modes, thereby achieving bidirectional power transfer without requiring separate devices.
Solution Approach 2:
The wireless charging device is designed with multi-functionality, where the transfer unit can selectively operate as either a transmitter or a receiver based on control signals. The switching circuitry allows the antenna and associated components to serve dual purposes: transmitting electromagnetic energy to external devices or receiving energy from them, making the device universally applicable for both charging and power harvesting.
2Productivity
If multiple wireless charging devices are connected to enable power transfer, then power distribution is improved, but connection management becomes complex
Solution Approach 1:
The patent implements modular connection interfaces that can be independently controlled. Each wireless charging device operates as an independent module with its own switching circuitry and control logic, allowing multiple devices to be connected in series or parallel configurations. The segmentation of control functions enables independent management of each connection while maintaining overall system coordination.
Solution Approach 2:
The switching circuitry dynamically reconfigures connection topologies based on operational requirements. The device can switch between series and parallel connections in real-time, allowing flexible adaptation to different power distribution scenarios. This dynamic reconfiguration capability simplifies connection management by automatically optimizing the network topology rather than requiring fixed complex wiring.
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 bidirectional wireless power transfer, allowing multiple devices to transmit and receive power simultaneously, enhancing power management and efficiency in handheld devices.
Implementation Method 1
a first transfer unit (10), which comprises a first signal control terminal (101) and a first power transfer terminal (102)... effecting wireless transmission of electrical power
Implementation Method 2
a first transfer unit (10), which comprises a first signal control terminal (101) and a first power transfer terminal (102)... effecting wireless receipt of electrical power
Data Source
AI summary
The present invention relates to a bidirectional wireless power transfer device, which includes: a first transfer unit; a second transfer unit; a selector that includes a first signal terminal, a second signal terminal, and a power input terminal; a power supply unit, which is electrically connected to the power input terminal of the selector and is also electrically connected to the first transfer unit and the second transfer unit; and a circuit board, on which the first transfer unit, the second transfer unit, the selector, and the power supply unit are mounted.