Modular Wireless Charging Transmitter with Interchangeable Coils
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Solution Overview
Problem
Existing wireless charging systems face interoperability issues between magnetic and non-magnetic transmitters, leading to poor efficiency and excess heat generation, limiting their usefulness and convenience, especially for automotive applications where different types of transmitters and receivers are used.
Innovation Solution
A modular wireless charging transmitter assembly system that includes interchangeable coil modules, such as Qi-type and MagSafe ®< coil modules, which share a common electronics module capable of detecting and adapting to the connected coil type, optimizing power transfer and cooling through active air ducting and a versatile interface for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a magnetic interface system is used to precisely align the wireless charging receiver with the transmitter, then alignment precision is improved, but interoperability with non-magnetic receivers deteriorates
Solution Approach 1:
The wireless charging transmitter is divided into two separate modules: a magnetic interface module for precise alignment and a large area charging module for broad compatibility. These modules can be used independently or combined, allowing the system to switch between precision mode and compatibility mode based on the receiver type.
Solution Approach 2:
The transmitter is designed with universal functionality to support both magnetic interface receivers and non-magnetic receivers. By incorporating both a magnetic interface module and a large area charging module, the system can adapt to different receiver types, making it universally compatible while maintaining precision when needed.
2Ease of operation
If a large charging area is provided to accommodate various placements of the receiver, then ease of operation is improved, but alignment precision deteriorates
Solution Approach 1:
The charging area is segmented into two distinct zones: a large area charging module that allows flexible placement and a magnetic interface module that provides precise alignment. Users can choose the appropriate module based on their needs, or the system can automatically select the optimal module.
Solution Approach 2:
Different regions of the transmitter have different functional qualities: the large area charging module provides broad coverage for flexible placement, while the magnetic interface module provides concentrated magnetic field lines for precise alignment. Each region is optimized for its specific purpose.
3Adaptability or versatility
If interoperability between magnetic and non-magnetic transmitters is enabled, then adaptability is improved, but efficiency deteriorates
Solution Approach 1:
The transmitter system dynamically adapts its configuration based on the receiver type. When a magnetic receiver is detected, the magnetic interface module is activated for efficient power transfer. When a non-magnetic receiver is detected, the large area charging module is activated for broad compatibility. This dynamic switching maintains high efficiency across different receiver types.
Solution Approach 2:
The system uses an intermediary detection mechanism to identify the receiver type and select the appropriate charging module. This intermediary layer ensures that the correct module is activated, preventing efficiency loss from using the wrong module configuration.
4Device complexity
If a single transmitter type is used, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
Instead of creating a completely new complex transmitter for each receiver type, the system segments the transmitter into standardized modules. The magnetic interface module and large area charging module are separate, interchangeable components that can be combined or used independently, reducing overall system complexity while maintaining adaptability.
Solution Approach 2:
The transmitter uses universal module interfaces and standardized control logic that work across both magnetic and non-magnetic configurations. This universal design allows a single transmitter platform to support multiple receiver types without requiring complex proprietary configurations for each case.
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 modular system ensures efficient wireless charging across different coil types, minimizing heat generation and enhancing convenience by allowing selective attachment of coil modules, thus accommodating various wireless charging standards within a single transmitter assembly.
Implementation Method 1
wireless charging transmitter assembly system includes an electronics module configured for connection to a plurality of different types of coil modules
Implementation Method 2
The second system utilizes a magnetic interface system that precisely aligns the wireless charging receiver (e.g., phone) with the wireless charging transmitter
Data Source
Figure 1~3
Figure 4A~4B
Figure 5A~5B
AI summary
An electronics module is disclosed. The electronics module (204) is configured to provide power to one of a plurality of different types of coil modules (200, 202) utilized for wireless charging. The electronics module (204) includes: an input power interface (600) configured to receive direct current (DC) power; DC-to-AC converter circuity (610, 612, 636) configured to convert the DC power to alternating current (AC) power; and an output power interface (602) having a first set of output pins (644a) and at least a second set of output pins (644b. 644c) configured to interface with each of the plurality of different types of coil modules (200, 202), wherein AC power is selectively provided to the first set of output pins (644a), or both the first and second set of output pins (644a, 644b, 644c) based on a type of coil module (200, 202) connected to the electronics module (204).