Wireless Charging Coil Accessory for Stable Vehicle Mounting
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Solution Overview
Problem
Existing wireless charging solutions for portable terminals, such as smart phones, face inefficiencies when accessories like smart rings or cases are attached, leading to unstable fixation and reduced charging efficiency due to vibration and restricted positioning.
Innovation Solution
A wireless charging apparatus with a terminal accessory embedded with a transmitting coil on the back of the portable terminal, coupled with a wireless charging module that supplies AC power through electric contacts, allowing for precise alignment and improved charging efficiency, even with accessories attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a smart ring is attached to the back of the smart phone for minimal attachment, then easy attachment and removal are achieved, but stable fixation is difficult due to vehicle vibration
Solution Approach 1:
The wireless charging system is divided into separate components: a terminal accessory with transmitting coil that can be attached to the smartphone, and a wireless charging module with receiving coil that mounts to the vehicle. This segmentation allows the smart ring to remain simple for easy attachment while the separate wireless charging module provides stable fixation through its own mounting mechanism, resolving the contradiction between ease of operation and reliability.
2Ease of operation
If a smart ring is used for attachment, then easy removal is achieved, but positioning flexibility is restricted to small ring shape locations
Solution Approach 1:
The invention transitions from two-dimensional ring attachment (limited to back surface positions) to three-dimensional positioning capability. The wireless charging module can be mounted at various locations on the vehicle (dashboard, windshield, console) and angled to match the driver's view, while the terminal accessory remains attachable to the smartphone back. This dimensional expansion provides both easy removal and positioning flexibility.
3Reliability
If accessories like smart ring or case are attached to the portable terminal, then easy fixation is achieved, but charging efficiency is rapidly reduced
Solution Approach 1:
The invention extracts the wireless charging function from the traditional charging port connection and implements it through separate magnetic coils. The transmitting coil in the terminal accessory and receiving coil in the wireless charging module create a magnetic field coupling that transfers power wirelessly. This extraction eliminates the need for physical cable connections that would be blocked by accessories, maintaining charging efficiency while allowing accessories to remain attached.
4Reliability
If a complex car cradle structure is used to fix the smart phone, then stable fixation is achieved, but device complexity and weight increase
Solution Approach 1:
The invention replaces complex mechanical fixation systems (clamps, adhesives, multiple components) with a magnetic field-based wireless charging system. The terminal accessory with transmitting coil attaches simply to the smartphone back, while the wireless charging module with receiving coil mounts to the vehicle using minimal mechanical fixation. Power transfer occurs through magnetic coupling without mechanical connections, dramatically reducing structural complexity while maintaining stable fixation.
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
The solution enables stable wireless charging with accessories by ensuring precise positioning of coils and maintaining charging efficiency, while allowing for easy attachment and adjustment, and preventing circuit malfunction due to the external power supply.
Implementation Method 1
a transmitting coil for generating a magnetic field for wireless charging of a magnetic induction type
Data Source
AI summary
Provided is a portable terminal wireless charging device including: a terminal accessory fixed to a back surface of the portable terminal and embedded a transmitting coil for generating a magnetic field for wireless charging of a magnetic induction type; and a wireless charging module coupled to the terminal accessory and including a circuit unit for supplying a AC power to the transmitting coil. Since the terminal accessory and the wireless charging module are each provided with a first electric contact and a second electric contact, when the terminal accessory is coupled to the wireless charging module, the first and second electric contacts are contacted with each other to supply the AC power from the circuit unit to the transmitting coil.