Wireless Charging Coil Support Structure Against PCB Deformation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless charging devices are prone to damage due to unintentional external forces, such as leaning or pressing, which can deform the circuit boards, especially in non-stationary environments like moving vehicles.
Innovation Solution
The design incorporates a casing with mounting pillars and a support assembly where the support pillars are coaxially arranged with the casing pillars, allowing external forces to be transferred to the bottom plate, thereby reducing the force exerted on the circuit board and preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the wireless charging device is designed for indoor stationary use, then the device structure can be simple, but the device is vulnerable to damage from external forces in non-stationary environments
Solution Approach 1:
The device structure is segmented into multiple functional components: a casing with mounting pillars, a circuit board with support pillars, and a top plate. This segmentation allows each component to perform its specific function while collectively providing resistance to external forces, resolving the contradiction between structural simplicity and force resistance.
Solution Approach 2:
The device employs a composite structural design combining the casing, mounting pillars, support pillars, and top plate into an integrated force-resistance system. This composite structure distributes and absorbs external forces across multiple components, enhancing reliability without significantly increasing overall device complexity.
2Device complexity
If the circuit board is directly mounted in the casing, then the device complexity is reduced, but the circuit board is susceptible to deformation from external forces
Solution Approach 1:
Support pillars are introduced as intermediary elements between the circuit board and the casing. These pillars act as mediators that absorb and distribute external forces, protecting the circuit board from direct impact and preventing deformation while maintaining a relatively simple mounting structure.
Solution Approach 2:
The mounting structure extends in the vertical dimension with support pillars protruding from the circuit board upward toward the top plate. This vertical arrangement creates an additional dimension of force distribution, enhancing the circuit board's resistance to deformation without complicating the horizontal mounting layout.
3Ease of manufacture
If the support pillars are not coaxially arranged with mounting pillars, then the manufacturing process is simpler, but external forces cannot be effectively transferred to the bottom plate
Solution Approach 1:
The coaxial arrangement of support pillars and mounting pillars creates localized quality enhancement at specific positions. This targeted alignment ensures optimal force transfer pathways at critical locations where the pillars intersect, maximizing force transfer efficiency while maintaining reasonable manufacturing simplicity through selective rather than universal complexity.
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 effectively prevents damage to the wireless charging device by distributing external forces, making it suitable for use in environments where accidental pressure is common, such as in vehicles.
Implementation Method 1
A wireless charging device charges an object by using electromagnetic induction
Data Source
AI summary
A wireless charging device includes a casing, a circuit board and at least one wireless charging module. The casing includes a bottom plate and a plurality of mounting pillars protruding from the bottom plate. The circuit board includes a substrate and at least one support assembly, and the substrate is stacked on the plurality of mounting pillars. The support assembly includes a plurality of support pillars protruding from the substrate. The wireless charging module includes a mounting frame and a charging coil. The mounting frame has a plurality of first assembling parts. The plurality of first assembling parts are respectively mounted on the plurality of support pillars. The charging coil is disposed on the mounting frame. Projections of the plurality of mounting pillars on the bottom plate at least partially overlap projections of the plurality of support pillars on the bottom plate.