Battery Powered Concrete Saw Indoor Cutting
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Solution Overview
Problem
Conventional concrete saws require either gasoline-powered engines or heavy-duty electrical generators for power, which are not suitable for indoor use due to exhaust emissions or excessive power loss in long electrical lines, and existing battery-powered solutions are not heavy-duty enough for heavy cutting jobs.
Innovation Solution
A battery-powered concrete saw with a lithium-based battery pack providing at least 80 volts, an alternating current electric motor, and a manual actuator for pivoting the saw frame, allowing for efficient indoor cutting without the need for external power sources or extensive electrical cabling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an internal combustion engine is used to power the concrete saw, then sufficient cutting power is achieved, but exhaust emissions make it unsuitable for indoor use
Solution Approach 1:
The patent replaces the internal combustion engine (mechanical/chemical system) with an electric motor (electrical system). The electric motor provides sufficient cutting power without producing exhaust emissions, enabling indoor use. The electrical system substitutes the mechanical propulsion system entirely, eliminating the harmful byproduct while maintaining the required power output.
Solution Approach 2:
The patent changes the power source parameter from combustion-based to electricity-based. By switching from a chemical energy conversion system (combustion) to an electrical energy conversion system (electric motor), the harmful exhaust emissions are eliminated while maintaining adequate cutting power through proper motor selection and battery pack configuration.
2Power
If an electrical generator is used to provide power, then sufficient cutting power is achieved, but power loss in long electrical lines becomes prohibitively expensive
Solution Approach 1:
The patent extracts the power generation function from a separate external generator and integrates it directly into the saw unit itself. By incorporating a battery pack that can be attached to or integrated with the saw, the power source is taken out of the external electrical line dependency, eliminating the power loss issue entirely while maintaining sufficient cutting power.
Solution Approach 2:
The battery pack serves as an intermediary energy storage device between the ultimate power source (external charging) and the electric motor. This intermediary allows the saw to operate independently of long electrical lines, as the battery stores sufficient energy to provide continuous cutting power without experiencing line resistance losses.
3Object-affected harmful factors
If a conventional battery pack is used to power the saw, then indoor use is enabled, but the battery pack does not provide sufficient power for heavy duty cutting jobs
Solution Approach 1:
The patent merges multiple battery cells into a single integrated battery pack assembly that provides high voltage and high current output. By combining multiple energy storage units in series and parallel configurations, the system achieves both the emission-free operation of battery power and the high cutting power previously only available from combustion engines or external generators.
Solution Approach 2:
The patent employs a composite power system combining multiple battery cells, electrical connectors, and power management components into an integrated battery pack. This composite structure delivers sufficient power for heavy duty cutting while maintaining the environmental benefits of electric power, effectively creating a new class of high-power portable tool power source.
4Power
If an electric motor of at least 5 horsepower is used, then sufficient cutting power is achieved, but an external electrical power source is required which is not conveniently located
Solution Approach 1:
The patent segments the power delivery system into a portable battery pack unit that can be independently attached to or separated from the saw mechanism. This segmentation allows the high-power electric motor to operate without being tethered to external power sources, as the battery pack provides all necessary energy locally, enabling mobility to any cutting location.
Solution Approach 2:
The battery-powered saw system is self-sufficient in terms of power provision. The integrated battery pack serves the motor's power needs without requiring external infrastructure, making the system self-service capable and fully mobile. The unit can be transported to and operated at any cutting location without dependency on externally located electrical power sources.
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
Enables efficient and maneuverable concrete cutting indoors with reduced power loss and no need for external generators, facilitating use in small spaces with sufficient cutting power and reduced operational costs.
Implementation Method 1
A lithium based battery pack includes a plurality of batteries connected in series to provide at least 80 volts for powering the saw
Implementation Method 2
An alternating current electric motor is mounted by the frame and has a rotational connection to the pair of saw arbors to provide rotational driving thereof
Data Source
AI summary
A battery operated concrete saw system (10) includes an electric saw (12) and a lithium based battery pack (58) including a plurality of batteries (60) connected in series to power the saw with at least 80 volts.