Electric Tool Dual 18V Battery System for High Power Output
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Solution Overview
Problem
High-output electric tools, such as angle drills and disc grinders, often require expensive 36V batteries, which are less common than 18V batteries, making them costly and less accessible to users.
Innovation Solution
Designing electric tools with multiple 18V battery attachment portions that can combine to provide a 36V power source, allowing users to power high-output tools with readily available 18V batteries, thus reducing the need for and cost of dedicated 36V batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single 36V battery is used to power high-output electric tools, then the tool can achieve the required power output, but the battery cost increases and accessibility decreases
Solution Approach 1:
The battery power system is segmented into multiple 18V battery units that can be combined to achieve 36V output. Instead of using a single expensive 36V battery, the system divides the power source into two or more affordable 18V batteries that are connected in series to provide the required voltage, making the system more accessible and cost-effective while maintaining the necessary power output
2Adaptability or versatility
If multiple 18V battery attachment portions are provided, then compatibility with common 18V batteries is improved, but device complexity increases
Solution Approach 1:
The battery attachment portions are designed with universal compatibility features that allow them to accept standard 18V battery packs. The attachment mechanism incorporates multi-functional elements that can accommodate different battery configurations (single 18V, dual 18V in series for 36V, or other arrangements), enabling the same attachment structure to serve multiple power source options without requiring separate specialized interfaces
Data Source
AI summary
An electric tool, such as an angle driver, has a main tool body with a front portion and a rear portion positioned opposite to the front portion. The main tool body houses a motor configured to receive electricity to function as a drive source. A gear head is coupled with the front portion of the main tool body wherein the gear head has a spindle in communication with a motor axis of the motor via mesh-engagement of bevel gears associated with the motor axis. The spindle has with a cutter tool accessory attached thereto such that rotation of the motor axis produces a commensurate rotation of the cutter tool accessory. Battery attachment portions are associated with the rear portion of the main tool body and are configured to receive a corresponding set of batteries that provide electricity to power the motor.