Movable Transmitting Coil Alignment for Variable-Height Wireless Charging
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Solution Overview
Problem
Existing wireless charging devices are limited by fixed transmitting coils that cannot adapt to charging devices with receiving coils at different heights, leading to higher costs and poorer user experience due to the need for dedicated designs for each device model.
Innovation Solution
A wireless charging device with a movably set transmitting coil module that adjusts its position based on the receiving coil's position signal and electrical parameters, using a sliding resistor and controller to ensure accurate alignment and charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the transmitting coil is fixed at a predetermined position, then the device structure is simple, but it cannot adapt to charging devices with receiving coils at different heights
Solution Approach 1:
The transmitting coil module is made movable instead of fixed, allowing it to adjust its position dynamically. The module can move along a guide rail or track within the charging device, enabling it to align with receiving coils at different heights. This dynamic adjustment mechanism resolves the contradiction by providing adaptability while maintaining relatively simple device structure through linear motion guidance.
Solution Approach 2:
The transmitting coil module is designed as a universal component that can serve multiple charging scenarios. By making the module movable and controllable, a single wireless charging device can accommodate various device models with different receiving coil positions, eliminating the need for model-specific dedicated designs. This universal approach improves adaptability without proportionally increasing device complexity.
2Measurement precision
If dedicated wireless charging devices are designed for each device model, then charging precision is improved, but costs increase and user experience deteriorates
Solution Approach 1:
A feedback mechanism is implemented where the controller receives position information about the receiving coil (either pre-stored or detected) and adjusts the transmitting coil module's position accordingly. This feedback loop enables automatic positioning without requiring dedicated design for each device model, achieving precise alignment while maintaining a universal device design that reduces complexity and costs.
Solution Approach 2:
The wireless charging device performs self-positioning of the transmitting coil module based on the identified receiving coil position. The system automatically adjusts without requiring manual intervention or specialized design configurations for different devices, achieving precise charging alignment through automated self-adjustment mechanisms.
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 the wireless charging device to adapt to charging devices with varying receiving coil heights, improving user experience and applicability by ensuring precise positioning and efficient charging.
Implementation Method 1
the AC signal is transmitted to the transmitting coil, causing the transmitting coil to generate a changing magnetic field, thereby inducing a current in the receiving coil
Data Source
AI summary
A wireless charging device and wireless charging method are disclosed. By movably setting a transmitting coil module within the wireless charging device and obtaining the position signal of the receiving coil to transmit to the controller, and connecting the sliding rod of the sliding resistor to the transmitting coil module, so that the transmitting coil module drives the sliding rod to slide during the moving process. The controller determines the position information of the receiving coil based on the position signal and detects the current electrical parameters of the sliding resistor. According to the current electrical parameters, it determines the current position information of the transmitting coil module and controls the transmitting coil module to move, enabling the transmitting coil module to accurately position and charge wirelessly with the receiving coil. Thereby, the wireless charging device may adapt to charging devices with receiving coils at different heights.