Battery Pack Isolation Interface for Power Tool Vibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power tools generate vibrational forces that can shorten the life cycle of battery packs by transferring excessive vibrations to the battery pack during operation.
Innovation Solution
A battery pack isolation system that includes an interface member and a plurality of isolators between the housing and the interface member to mechanically isolate the battery pack from the housing, reducing the transfer of vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery pack is directly coupled to the housing, then electrical connection is simplified, but vibrational forces are transferred to the battery pack reducing its life cycle
Solution Approach 1:
The interface member serves as an intermediary component between the battery pack and housing. It provides electrical connection while the isolators mounted on the interface member act as mediators to block vibrational force transmission. This resolves the contradiction by introducing an intermediate structure that enables both electrical connectivity and vibration isolation, preventing direct coupling while maintaining functional connection.
Solution Approach 2:
The connection system is segmented into distinct functional components: the interface member for electrical connection and the isolators for vibration isolation. This segmentation allows each component to perform its specific function optimally - the interface member handles electrical tasks while the isolators handle mechanical isolation, thereby extending battery pack life without overly complicating the overall system.
2Reliability
If isolators are added to isolate the battery pack, then vibration transmission is reduced, but device complexity increases
Solution Approach 1:
The isolators are merged with the interface member by mounting them directly on the interface member's outer surface. This integration allows the isolators to be part of the connection assembly without being separate, standalone components. The merging reduces the perceived complexity by combining isolation functionality with the existing interface structure, while still achieving the goal of protecting the battery pack from vibrations.
3Object-affected harmful factors
If the housing is constrained to prevent movement, then structural stability is improved, but vibration isolation effectiveness is reduced
Solution Approach 1:
The isolators are positioned at specific locations on the interface member where they locally provide vibration isolation properties. This local application of isolation functionality allows the housing to maintain its overall structural stability while specific localized areas (where isolators are mounted) provide the necessary vibration damping. The local quality approach ensures stability is not compromised while achieving vibration isolation at critical points.
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 isolation system effectively reduces the transmission of vibrational forces to the battery pack, extending its life cycle by allowing the housing to move freely and preventing high-frequency vibrations from being transferred, thus enhancing the durability of the battery pack.
Implementation Method 1
a plurality of isolators coupled between the housing and the interface member to isolate the battery pack from the housing during operation of the power tool
Data Source
AI summary
A power tool includes a housing, a motor positioned substantially within the housing, a drive mechanism supported by the housing and coupled to the motor, a battery pack electrically coupled to the motor, and an isolation system. The isolation system includes an interface member positioned substantially within the housing. The interface member receives a portion of the battery pack to electrically couple the battery pack to the motor. The isolation system also includes a plurality of isolators coupled between the housing and the interface member to isolate the battery pack from the housing during operation of the power tool.