Slot-Type Induction Charger Coil Segmentation
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Solution Overview
Problem
Conventional wireless battery chargers are bulky, inconvenient to carry, and inefficient due to partial energy loss during electromagnetic induction, and require expensive magnetic materials for improved efficiency.
Innovation Solution
A slot-type induction charger with a power base and induction charging receiver, featuring a power-supplying coil module and power-receiving coil module with multiple coils wound in alternating directions, allowing for efficient electromagnetic induction without increasing device thickness and requiring minimal installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional planar spiral coils are used for electromagnetic induction charging, then power transmission efficiency can be improved by using magnetic materials, but the device becomes bulky and expensive
Solution Approach 1:
The patent segments the coil structure into multiple small coils arranged in a matrix pattern within a narrow slot, replacing the conventional single large planar spiral coil. This segmentation allows efficient electromagnetic induction while maintaining a compact form factor, as each small coil contributes to the overall power transmission without requiring large individual coil areas or thick magnetic shielding materials.
Solution Approach 2:
The patent transitions from a two-dimensional planar spiral coil layout to a three-dimensional matrix arrangement of multiple small coils within a narrow slot. By utilizing the vertical dimension and arranging coils in both rows and columns, the system achieves effective power transmission in a compact space, eliminating the need for bulky planar structures.
2Power
If large induction surface area is used to improve induction power, then charging efficiency increases, but installation space requirements increase
Solution Approach 1:
The patent divides the induction surface into multiple small coils arranged in a matrix, where each coil contributes to the total induction power. This segmentation allows the system to achieve high induction power through the cumulative effect of multiple small coils rather than requiring a single large coil, thus reducing the overall installation footprint.
Solution Approach 2:
The patent nests multiple coils within a narrow slot structure, arranging them in a compact matrix pattern. This nesting approach allows the induction surface to be packed efficiently into a small space, with coils positioned in both horizontal and vertical directions within the slot, maximizing power density while minimizing installation area.
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 efficient charging of multiple devices in a compact form, reducing the risk of damage from vibrations and eliminating the need for additional electromagnetic shielding, while maintaining high power transmission efficiency and stability.
Implementation Method 1
uses an induction charging receiver in a narrow slot of a thin thickness power base to receive an induced electric current from a power-supplying coil module of the power base by means of electromagnetic induction
Implementation Method 2
A coil module has a certain amount of inductance, and works with a capacitor to create resonance, thereby inducing an electric current
Data Source
AI summary
A slot-type induction charger having light, thin, short and small characteristics is disclosed to include a power base holding therein a control module and a power-supplying coil module in a base member thereof for inducing an electric current, and an induction charging receiver set in the base member for receiving the induced electric current by electromagnetic induction from the power base for charging an electromagnetic device being connected to an electrical connector thereof. The power-supplying coil module and the power-receiving coil module each includes a magnetic conductor and a series of coils being alternatively and reversely wound around the magnetic conductor.