Wireless Power Adaptor Voltage Control via Communication Signal
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Solution Overview
Problem
Existing battery pack charging methods using terminal connections can lead to instantaneous discharge phenomena, causing fires when foreign objects are involved and result in natural discharge due to moisture, reducing battery lifespan and performance.
Innovation Solution
A wireless power transmission assembly that includes a method for controlling power by outputting direct current voltage from an alternating current source, with a transmission controller that adjusts voltage levels based on communication signals, using a plurality of transmission coils and communication lines to efficiently transmit power and reduce component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal supplying method is used to charge battery pack, then electrical energy can be supplied to battery pack, but instantaneous discharge phenomenon occurs causing fire hazard and natural discharge due to moisture reducing battery lifespan
Solution Approach 1:
The patent replaces the mechanical terminal connection system with a wireless power transmission system using electromagnetic fields. The wireless power transmission apparatus transmits power through air coupling between transmission and reception coils, eliminating physical contact and thereby preventing instantaneous discharge during connection/disconnection and moisture-related discharge through terminals.
2Reliability
If wireless power transmission method is used, then instantaneous discharge and moisture discharge problems are solved, but manufacturing cost increases due to additional components
Solution Approach 1:
The communication line serves multiple functions: it transmits both control signals for power level adjustment and communication data between the adaptor and wireless power transmission apparatus. This multi-functionality reduces the need for separate dedicated communication hardware, thereby lowering manufacturing costs while maintaining wireless safety benefits.
Solution Approach 2:
The patent combines the power transmission and communication functions into a unified wireless power transmission system. The voltage change communication signal is transmitted through existing communication infrastructure (communication line), merging control and data functions, which reduces component count and manufacturing complexity.
3Productivity
If voltage control is implemented through separate control circuitry, then power transmission efficiency increases, but device complexity and manufacturing cost increase
Solution Approach 1:
The adaptor integrates voltage control functionality directly into its existing power conversion circuitry. The adaptor receives voltage change communication signals and adjusts its output voltage accordingly, merging control and power conversion functions in a single component, thereby maintaining efficiency without adding separate control circuitry.
Solution Approach 2:
The system implements feedback control where the wireless power transmission apparatus monitors power transmission conditions and sends voltage change communication signals back to the adaptor. The adaptor adjusts its output voltage based on this feedback, optimizing power transmission efficiency through closed-loop control without requiring complex additional hardware.
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 decreases manufacturing costs and increases wireless power transmission efficiency while preventing instantaneous discharge and environmental energy loss, enhancing safety and battery performance.
Implementation Method 1
a wireless power transmission apparatus which transmits a wireless power signal using the direct current voltage outputted from the adaptor
Data Source
AI summary
A power control method for a wireless power transmission assembly, and the wireless power transmission assembly. The method includes: outputting a direct current voltage to a wireless power transmission apparatus, the direct current voltage generated from an alternating current power source in an adaptor; and changing the level of the direct current voltage in the adaptor based on a voltage change communication signal if the wireless power transmission apparatus transmits the voltage change communication signal to the adaptor.