Battery Interface Damping for Impact-Protected Power Tool Packs
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Solution Overview
Problem
Existing power tools with rechargeable batteries are inadequately protected against mechanical impacts and shocks, leading to potential damage and malfunction.
Innovation Solution
Incorporation of a damping device between the housing and battery interface to absorb and reduce mechanical impacts and vibrations on the rechargeable batteries, utilizing damping elements made of elastic materials or spring elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rechargeable batteries are used to supply the power tool with electrical energy, then the power tool can operate autonomously without external power sources, but the batteries become vulnerable to damage from mechanical impacts and shocks
Solution Approach 1:
A damping device is integrated into the battery interface device, positioned between the housing and the battery connection components. This damping device includes damping elements that are pre-configured to absorb and attenuate mechanical impacts and shocks before they can reach and damage the rechargeable batteries, thereby providing beforehand cushioning protection while maintaining autonomous operation capability
Solution Approach 2:
The damping device acts as an intermediary component between the housing and the battery interface. It includes damping elements made of elastic materials or spring elements that mediate the mechanical forces, absorbing impact energy and reducing the transmission of shocks to the batteries, thus protecting the batteries while allowing autonomous operation
2Reliability
If protective apparatuses are added to protect rechargeable batteries from impacts, then battery protection is improved, but the device complexity increases
Solution Approach 1:
The damping device is merged with the battery interface device, integrating the protective function into an existing component rather than adding a separate protective apparatus. The damping elements are incorporated within the battery interface device structure, combining the battery connection function with the impact protection function, thereby improving battery protection without significantly increasing overall device complexity
Solution Approach 2:
The damping elements are configured as flexible components made of elastic materials or spring elements. These flexible damping elements can deform to absorb impact energy while maintaining a compact structure. The damping device includes at least one damping element arranged in a longitudinal extent perpendicularly to a working axis of the power tool, providing effective protection without adding complex structural elements
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
Effectively protects rechargeable batteries from mechanical shocks and vibrations, enhancing their durability and performance.
Implementation Method 1
the at least one damping element has at least one axially extending groove on an outer lateral surface. As a result, the elasticity and consequently the damping effect of the damping element can be increased
Implementation Method 2
a damping device for absorbing and damping impacts acting on the at least one rechargeable battery
Data Source
AI summary
A power tool, in particular a chipping hammer, having a housing and a battery interface device for releasably connecting at least one rechargeable battery to the power tool. An impact damping device is contained between the housing and the battery interface device, wherein the impact damping device contains at least one damping element which is arranged in a longitudinal extent perpendicularly to a working axis of the power tool.