Self-Charging Power Tool With Motor-Generator Battery Switching
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Solution Overview
Problem
Existing power tools require frequent battery charging or electrical connections, which is inefficient, costly, and unreliable, and can be unsafe when operating at low battery levels.
Innovation Solution
A self-charging tool device with a rotary engine attached to a power generator that converts mechanical energy into electrical energy, stored in a double battery system, allowing continuous operation without external charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power tools use batteries to maintain power, then the tool can operate portably, but the tool requires frequent charging which reduces workplace efficiency and increases loss of time
Solution Approach 1:
The power tool system performs self-charging during operation through a generator that converts mechanical energy from the motor into electrical energy to recharge the battery. This self-service mechanism eliminates the need for external charging stations and restores battery power during normal use, directly resolving the time loss contradiction.
Solution Approach 2:
The system merges the motor and generator into a single integrated unit where the motor drives the generator during operation. This combination allows the system to simultaneously perform work and recharge the battery, eliminating separate charging operations and reducing time loss.
2Adaptability or versatility
If power tools use batteries to maintain power, then the tool can operate independently, but significant money is wasted on electricity for charging or purchasing new batteries
Solution Approach 1:
The system converts the mechanical energy that would otherwise be wasted during tool operation into useful electrical energy through the generator. This energy recovery process transforms operational byproducts into recharge power, eliminating the need for external electricity or battery replacement and reducing energy loss costs.
Solution Approach 2:
The system recovers mechanical energy from the motor operation and converts it back into electrical energy for battery recharging. This recovery process prevents energy waste and eliminates the need for continuous battery replacement or external charging costs.
3Reliability
If power tools require an electrical connection or batteries, then the tool can maintain power, but the tool is not reliable when battery levels are low which can be unsafe and damage the tool
Solution Approach 1:
The generator continuously recharges the battery during tool operation, ensuring the battery never depletes to dangerous levels. This continuous energy replenishment maintains reliable power supply and prevents the safety issues associated with low battery operation.
Solution Approach 2:
The system incorporates a controller that monitors battery charge levels and regulates the generator's charging output. This feedback mechanism ensures the battery is maintained at optimal charge levels, preventing both overcharging and dangerous low-battery conditions, thereby ensuring safety and reliability.
4Power
If power tools use hydraulic pressure, wind-force or electric power source, then the tool can generate power, but it produces unpleasant gas, vibration and noise
Solution Approach 1:
The system replaces external power sources (hydraulic, wind, electric) with an integrated motor-generator system that uses the tool's own motor to drive the generator. This substitution eliminates the harmful emissions, vibrations, and noises associated with external power sources while maintaining power generation 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
The device maintains continuous power supply by alternating battery use, ensuring reliable and safe operation, eliminating the need for external charging and maximizing durability with a hard plastic shell.
Implementation Method 1
the generator collects the mechanical energy created by the engine and converts it to electrical energy
Implementation Method 2
electrical energy that will be stored in an internal battery
Data Source
AI summary
A self-charging tool device is disclosed that eliminates the need for tool chargers. The self-charging tool device comprises a rotary engine that is attached to a power generator. As the rotary engine powers the tool, the generator collects the mechanical energy created by the engine and converts it to electrical energy that will be stored in an internal battery. Further, the device consists of an internal motor and micro generator system connected to one another. A double battery and cell system would then alternate power at a specific point of charge to optimize drill performance and maintain a balance of readily available power. This will keep the tool permanently charged and eliminate the need for a tool charger. Further, the outer shell would be comprised of a hard plastic to maximize durability of the device.