Wireless Charging Toolbox for Cordless Power Tools
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Solution Overview
Problem
Cordless power tools face limited operating time due to battery depletion, especially in situations where spare batteries or power sources are unavailable, making continuous or extended operation challenging.
Innovation Solution
A toolbox with an embedded transmitter capable of generating RF waves for wireless charging, powered by a battery that can be charged from external sources, including vehicle batteries, to wirelessly charge cordless power tools, extending their operational period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cordless power tools use battery power for portability, then ease of operation is improved, but duration of action deteriorates due to limited battery life
Solution Approach 1:
The patent introduces a wireless power transmission system as an intermediary between power sources and cordless tools. The transmitter generates electromagnetic fields that couple with receivers in the tools, enabling wireless energy transfer and extending operating time without adding physical batteries to the tools themselves.
Solution Approach 2:
The system performs preliminary action by establishing wireless power transmission capabilities before the tools are used. The transmitter is set up in advance to create electromagnetic fields, and receivers in the tools are prepared to capture energy, allowing continuous operation without interrupting for battery changes.
2Duration of action of moving object
If multiple batteries are carried for extended operation, then duration of action is improved, but weight of moving object increases
Solution Approach 1:
The patent replaces the mechanical battery-swapping system with an electromagnetic field-based wireless power transmission system. Instead of physically carrying and exchanging heavy batteries, the system uses electromagnetic coupling between transmitter and receiver to transfer energy, eliminating the need for multiple physical battery packs.
3Duration of action of moving object
If wireless charging infrastructure is deployed, then duration of action is improved, but device complexity increases
Solution Approach 1:
The wireless power transmission system is designed with universal applicability, where a single transmitter can serve multiple receivers simultaneously. The system can charge multiple tools of different types without requiring tool-specific charging infrastructure, reducing overall system complexity through standardized electromagnetic coupling.
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 solution provides efficient and simultaneous wireless charging for cordless power tools, enabling continuous operation even in areas without access to electrical power sources, by using a portable toolbox that can be charged and used in various locations, including construction sites and vehicles.
Implementation Method 1
a transmitter capable of generating RF waves for the generation of pockets of energy
Implementation Method 2
a battery that may be charged from any suitable power source including vehicle batteries
Implementation Method 3
receivers that may utilize pockets of energy for wireless charging or powering
Data Source
AI summary
Configurations and methods of wireless power transmission for cordless power tools are disclosed. Wireless power transmission for charging one or more cordless power tools may include a toolbox with an embedded transmitter capable of emitting RF waves for the generation of pockets of energy; a battery attached or embedded in the toolbox to supply power to the transmitter; a cable that may connect toolbox's battery to a suitable external power source for charging; and one or more cordless power tools which may include rechargeable batteries and receivers that may utilize pockets of energy for wireless charging or powering. When the battery in the toolbox is charged to suitable levels, the toolbox can be disconnected from the external power source and carried to an area or location where one or more cordless power tools may receive wireless charging.