Multifunction Battery Charger With Haptic Feedback
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Solution Overview
Problem
Conventional devices face challenges in integrating multiple functions such as wireless charging, vibrational energy harvesting, and haptic feedback into a single compact form factor, leading to increased component volume and complexity.
Innovation Solution
A multifunction device with a magnetic system that operates in three modes: wireless charging, vibrational energy harvesting, and haptic feedback, utilizing a stationary coil and a spring-loaded magnetic core to switch between these functions efficiently, allowing for component volume savings and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple functions (wireless charging, energy harvesting, haptic feedback) are integrated into a single device, then device functionality and versatility are improved, but component volume and device complexity increase
Solution Approach 1:
The patent implements a single magnetic system that can operate in three distinct modes: wireless charging mode (where the magnetic core is stationary and coils transfer power wirelessly), vibrational energy harvesting mode (where the magnetic core moves to generate electricity from vibrations), and haptic feedback mode (where the magnetic system generates vibrations for user feedback). This multi-functional approach allows one component to replace what would traditionally require three separate components, directly resolving the contradiction between versatility and volume.
Solution Approach 2:
The magnetic core is designed to be movable rather than fixed, suspended by springs that allow it to move in response to electromagnetic forces. This dynamic design enables the same physical component to serve different functions by changing its state: stationary for wireless charging, oscillating for energy harvesting, and vibratory for haptic feedback. The dynamic nature of the system allows functional transformation without requiring separate components for each mode.
2Adaptability or versatility
If multiple functions are integrated into a single device, then device versatility is improved, but device complexity increases
Solution Approach 1:
By designing a single magnetic system capable of three operating modes, the patent reduces the number of separate subsystems needed. The same magnetic core, coils, and spring assembly serve all three functions (wireless charging, energy harvesting, haptic feedback), thereby reducing overall system complexity compared to implementing three separate functional modules.
Solution Approach 2:
The dynamic magnetic core design simplifies the system architecture by using one movable component instead of multiple fixed components. The control system manages the three modes by adjusting electrical parameters and switching configurations, which is simpler than managing multiple independent hardware subsystems. The spring-loaded mechanism provides passive mechanical functionality that reduces the need for additional active control elements.
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 multifunction device effectively combines wireless charging, energy harvesting, and haptic feedback capabilities in a single component, reducing volume and complexity while maintaining energy efficiency and user notification functionality.
Implementation Method 1
the magnetic core is a spring-loaded magnetic core that receives an electromagnetic force from the stationary coil to vibrate the magnetic core about a neutral position
Implementation Method 2
a multifunction device with vibrational energy harvesting, wireless charging, and haptic feedback capabilities
Data Source
AI summary
Techniques for implementing a multifunction device with battery charging and haptic feedback capabilities are described. An example of an electronic device includes a multifunction charger and a control circuitry configured to activate one of a plurality of available operating modes of the multifunction charger. The plurality of operating modes includes a wireless charging mode and a haptic feedback mode.