Wireless Power Receiver PCB Thickness Reduction
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Solution Overview
Problem
Conventional wireless power receivers require separate modules and resonators on printed circuit boards, leading to increased thickness, complexity, and manufacturing costs, as well as reduced portability and increased risk of damage due to external connections.
Innovation Solution
A wireless power receiver design featuring a substrate partitioned into areas for a circuit portion and a resonance pattern portion, with a shield mounted only on the surface without metal layers, allowing for a single printed circuit board implementation that reduces thickness and simplifies the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power receiver uses separate modules and resonators on printed circuit boards, then wireless charging function is achieved, but overall thickness increases and device complexity increases
Solution Approach 1:
The patent combines the wireless power receiver module and resonator into a single integrated printed circuit board structure. The resonator is formed using trace patterns on the PCB itself rather than requiring separate resonator components, thereby merging multiple functions into one unified structure that reduces overall thickness while maintaining wireless charging capability.
Solution Approach 2:
The patent transitions from three-dimensional stacked modules to a two-dimensional planar integration on the PCB. By forming the resonator using trace patterns on the circuit board surface rather than vertical stacking, the design achieves wireless charging functionality with reduced thickness in the vertical dimension.
2Reliability
If wireless power receiver uses separate modules and resonators on printed circuit boards, then wireless charging function is achieved, but device complexity increases and manufacturing becomes more complicated
Solution Approach 1:
The patent merges the wireless power receiver circuitry and resonator structure into a single PCB assembly. The resonator is created using conductive trace patterns directly on the circuit board, eliminating the need for separate resonator components and their associated mounting, wiring, and alignment procedures, thereby significantly simplifying the assembly process.
Solution Approach 2:
The printed circuit board serves multiple functions simultaneously: it provides the structural substrate, carries the wireless power receiver circuitry through standard PCB traces, and forms the resonator structure through specific trace patterns. This multi-functionality eliminates the need for separate dedicated components for each function, reducing overall device complexity.
3Ease of operation
If cable connection terminals are provided for battery charging, then battery can be charged via cable, but cable connection terminals may be damaged by frequent connection and dust or water may enter through terminals
Solution Approach 1:
The patent replaces the mechanical cable connection terminal system with a wireless power reception system. By using electromagnetic induction through PCB-trace-formed resonators, the design eliminates physical connectors that are susceptible to mechanical wear, dust ingress, and moisture contamination, thereby improving reliability while maintaining charging capability.
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
This design achieves a reduced overall thickness, simplified manufacturing, and enhanced wireless charging efficiency while minimizing the risk of damage from external factors.
Implementation Method 1
a resonance pattern portion provided on at least one surface of the substrate in the second area (Y)... The resonance pattern portion is patterned on the first surface of the dielectric layer in the second area (Y) or on the metal layer provided on the second surface of the dielectric layer
Implementation Method 2
a wireless module for converting or rectifying alternating current (AC) power induced through the wireless charging resonator into direct current (DC) power
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
A wireless power reception apparatus, according to various embodiments of the present invention, may comprise: a substrate part which is partitioned into a first region and a second region adjacent to the first region; a circuit part which is mounted on the first region of the substrate part and comprises a reception module; a resonant pattern part which is directly provided on at least one side of the second region of the substrate part; and a shielding part which is mounted on one side of the second region of the substrate part. The wireless power reception apparatus as above can be implemented in various ways according to embodiments.