Portable Wireless Power Transmitter Using Electromagnetic Induction
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Solution Overview
Problem
Existing wireless power transmission devices require a constant alternating current power source and are limited in their ability to store and transmit power independently, leading to issues such as terminal abrasion, heat generation, and reduced lifespan due to moisture exposure and location dependence.
Innovation Solution
A wireless power transmission device with a power storage unit that stores direct current power, including an alternating/direct current converter, battery, and charging unit, which allows for wireless power transmission to a power receiving device using a power transmitting unit operated by the stored direct current power, enabling operation without a continuous external power source and reducing wear and tear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal connecting method is used to directly connect power terminals, then power transmission is simple and direct, but terminal abrasion occurs and heat is generated due to instantaneous discharging
Solution Approach 1:
The patent replaces the mechanical terminal connection system with a wireless electromagnetic induction system. The transmitting device uses a transmitting coil to generate a magnetic field, which induces current in the receiving coil of the power receiving device, eliminating physical contact between terminals and thus preventing terminal abrasion and heat generation from instantaneous discharging.
2Reliability
If wireless power transmission is used, then terminal abrasion and heat generation are reduced, but the device requires constant external alternating current power supply
Solution Approach 1:
The patent applies preliminary action by storing energy in advance in a battery (power storage unit) within the transmitting device. This allows the device to accumulate power beforehand and operate independently without requiring constant external power supply, enabling portability and use in locations without external power sources.
Solution Approach 2:
The transmitting device is designed to be self-sufficient by incorporating a power storage unit (battery) that stores electrical energy. The device can charge its own battery and use the stored energy to power the transmitting coil, making it independent of external alternating current sources and enabling mobile operation.
3Adaptability or versatility
If power is stored in a battery, then location independence is achieved, but device weight increases
Solution Approach 1:
The patent optimizes the battery capacity and power transmission parameters to achieve a balance between portability and functionality. By carefully selecting the battery size and managing power consumption through efficient electromagnetic induction, the device achieves location independence while keeping the weight increase acceptable for portable use.
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 users to carry and wirelessly transmit power to a power receiving device regardless of time or location, improving safety and extending device lifespan by eliminating the need for constant external power and reducing moisture-related issues.
Implementation Method 1
The wireless power transmitting device wirelessly transmits the power by using, for example, an electromagnetic induction method
Data Source
AI summary
There is provided a wireless power transmitting device capable of simply being carried by a user and wirelessly transmitting a power to a power receiving device with a high transmission efficiency regardless of time and space. The wireless power transmitting device includes a power storage unit configured to store a direct current power, and a power transmitting unit configured to be operated by the direct current power stored in the power storage unit and to wirelessly transmit the power to a power receiving device.