Piezoelectric Charging Device for Portable Electronics
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Solution Overview
Problem
Portable electronic devices face limited standby or operation time due to battery constraints, and existing charging solutions are inconvenient when a power supply or charger is not available, especially during daily activities like walking or mountaineering.
Innovation Solution
A charging device integrated with a mechanical energy collecting device and a mechanical energy-electrical energy converting device that captures and converts human movement energy into electrical energy to charge the device's battery, eliminating the need for a separate power supply or charger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a chargeable battery is used in portable electronic products, then the device can operate independently, but the standby time is restricted and requires external charging when exhausted
Solution Approach 1:
The patent implements a self-charging mechanism where the portable electronic product automatically converts mechanical energy from user movement (walking, running, climbing) into electrical energy through a piezoelectric converter and spiral spring system. This eliminates the need for external power sources or chargers, allowing the device to recharge itself during normal use activities.
Solution Approach 2:
The patent replaces the traditional external electrical charging system with a mechanical energy conversion system. Instead of using an external power adapter to charge the battery, the device uses a piezoelectric converter that transforms mechanical energy from body movement into electrical energy, substituting the mechanical charging approach for conventional electrical charging.
2Duration of action of moving object
If a mechanical energy collecting device is added to convert body movement into electrical energy, then the standby time can be prolonged, but the device structure becomes more complex
Solution Approach 1:
The patent merges the energy storage function into the existing battery system by adding a spiral spring mechanism that works in conjunction with the battery. The spiral spring acts as a mechanical energy storage component that complements the electrical battery, creating a hybrid energy storage system that integrates smoothly with the portable device's existing structure.
Solution Approach 2:
The piezoelectric converter serves multiple functions: it converts mechanical energy from various types of body movement (walking, running, climbing) into electrical energy, and simultaneously acts as a power generation source that can charge the battery during any physical activity. This multi-functional component reduces overall device complexity by consolidating energy conversion and storage capabilities.
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 solution prolongs the standby time of portable electronic devices by automatically charging the battery using mechanical energy from user movement, providing a convenient and reliable charging option even in situations where a power supply or charger is unavailable.
Implementation Method 1
a piezoelectric converter coupled with the spiral spring, adapted to convert mechanical energy of the spiral spring into electrical energy
Implementation Method 2
a mechanical energy-electrical energy converting device coupled with the mechanical energy collecting device, adapted to convert mechanical energy stored by the mechanical energy collecting device into electrical energy
Data Source
AI summary
The present invention discloses a charging device for a portable electronic product with a charging circuit, including: a mechanical energy collecting device configured on a main body of the portable electronic product, adapted to collect and store part of mechanical energy of a user of the portable electronic product; a mechanical energy-electrical energy converting device coupled with the mechanical energy collecting device, adapted to convert mechanical energy stored by the mechanical energy collecting device into electrical energy; and a processing circuit connected between an output end of the mechanical energy-electrical energy converting device and an input end of the charging circuit of the portable electronic product, adapted to process energy output from the mechanical energy-electrical energy converting device and input processed energy to the charging circuit of the portable electronic product.