Back-mounted power tool systems and methods of use
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Solution Overview
Problem
Conventional battery-powered power tool systems face limitations due to weight and size issues when increasing voltage to enhance performance, leading to user fatigue and reduced flexibility, and often have batteries that are not interchangeable or modifiable, limiting their application and convenience.
Innovation Solution
A back-mounted power tool system featuring a backpack apparatus with a removable battery package and a connecting member that allows the power tool to rotate, distributing the weight and force across the user's shoulders, back, and waist, enabling increased voltage without excessive weight and allowing for interchangeable batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the voltage of the battery is increased to increase power supplied to the motor, then the efficiency and performance of the power tool system is improved, but the weight and size of the battery increase
Solution Approach 1:
The battery system is segmented into multiple individual battery cells that can be connected in sequence to achieve desired voltage levels. This allows the system to be configured for different power requirements without requiring a completely different battery design, and users can add or remove cells based on specific application needs.
Solution Approach 2:
The battery configuration is made dynamic and adjustable rather than fixed. The system allows users to modify the number of battery cells connected in sequence, enabling the battery to adapt to different power tool requirements and operational durations, thus optimizing the weight-power balance for each specific use case.
2Power
If the number of battery cells is increased to achieve high voltage, then the power supplied to the motor is increased, but the overall weight and size of the power tool system increase
Solution Approach 1:
The battery system is segmented into multiple individual battery cells that can be connected in sequence to achieve desired voltage levels. This allows the system to be configured for different power requirements without requiring a completely different battery design, and users can add or remove cells based on specific application needs.
Solution Approach 2:
The battery package design is universal and can be used across different power tool applications. The same modular battery cell configuration can serve multiple power tools with different power requirements, reducing the need for application-specific battery designs and minimizing overall system size.
3Reliability
If the battery is fixed as part of the system, then the power supply is stable, but the battery cannot be replaced or modified, limiting the life and flexibility of the system
Solution Approach 1:
The battery system is segmented into multiple individual battery cells that can be connected in sequence to achieve desired voltage levels. This allows the system to be configured for different power requirements without requiring a completely different battery design, and users can add or remove cells based on specific application needs.
Solution Approach 2:
The system allows for parameter changes in battery configuration, such as adjusting the number of cells or replacing individual cells. This maintains reliable power supply while providing flexibility to adapt to different operational requirements and extending the overall system life through modular replacement.
Data Source
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AI summary
Embodiments of the disclosure are directed to a back-mounted power tool system. The power tool system includes a battery package that can be used on other power tool systems, a backpack apparatus, a power tool, and a connecting member. The backpack apparatus includes a backpack harness to mount the backpack apparatus onto a user's body and a first connector to removably couple the battery package to the backpack apparatus. The power tool includes a motor driven by a power supply from the battery package. The connecting member transfers a weight of the power tool and/or a force received from the power tool to the backpack apparatus by rotatably coupling the power tool to the backpack apparatus. The connecting member further enables the power tool to rotate about a first rotation axis or a second rotation axis, the first rotation axis being perpendicular to the second rotation axis.