Protective Hood for Electric Tool Energy Storage
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Solution Overview
Problem
Existing soil working devices powered by electric motors and energy storage devices face challenges in extending the service life and operating time of the energy storage components due to high power demands and exposure to harsh construction site conditions.
Innovation Solution
The implementation includes a soil compaction or tillage device with a ground contact device driven by an electric motor, an enclosed energy storage system protected by a covering device that shields the energy store from excessive heating, mechanical impacts, and solar radiation, along with a vibration decoupling mechanism to reduce operator fatigue and enhance protection of the control device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the energy store is exposed to harsh construction site conditions without protection, then the device structure remains simple, but the service life and operating time of the energy storage device are reduced due to overheating, mechanical damage, and environmental factors
Solution Approach 1:
The housing is designed with integrated protective features including insulation layers and energy-absorbing structures that are built-in before the device is put into service. The housing material and structure are pre-configured to cushion against thermal, mechanical, and environmental hazards that will be encountered during operation.
Solution Approach 2:
The housing serves multiple functions simultaneously: it provides structural support, thermal insulation, mechanical impact protection, and environmental sealing. This multi-functionality reduces the need for separate protective components, thereby limiting the increase in device complexity while comprehensively protecting the energy store.
2Reliability
If the energy store is protected from all environmental factors, then the service life is extended, but the device weight increases due to additional protective components
Solution Approach 1:
The housing provides enhanced protection only in the specific areas where the energy store is located and most vulnerable. The protective features are concentrated locally around the energy store rather than uniformly distributed throughout the entire device, optimizing protection while minimizing additional weight.
Solution Approach 2:
The housing is constructed from composite materials that combine structural strength with thermal insulation properties in a single component. This eliminates the need for separate insulation layers and protective shells, achieving comprehensive protection without proportionally increasing device weight.
3Ease of operation
If the energy store is arranged in a position that is easily accessible for operation, then the ease of operation is improved, but the protection from mechanical impacts and environmental factors is reduced
Solution Approach 1:
The housing is designed with a removable or openable section that allows access to the energy store when needed. The protective housing remains intact during operation to provide protection, but can be selectively opened or disassembled for maintenance, charging, or replacement of the energy store, thus segmenting the protective function from the operational access function.
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
This configuration extends the service life and operating time of the energy storage device by protecting it from overheating, mechanical damage, and environmental factors, while reducing operator fatigue and improving ease of use through effective vibration damping and enhanced protection of the control device.
Implementation Method 1
arranged on the upper mass in a vibration decoupling fashion with respect to the guide device. The vibrations can thus be decoupled from the guide device and the handle arranged on the guide device in an effective manner.
Implementation Method 2
a covering device (9) which, in the working position of the tamper (1), is above the energy store (7)... the covering device (9) can protect the energy store (7) and the control device (8) from solar radiation or heat radiation
Data Source
Figure 1
AI summary
The invention relates to a piece of equipment (1) which has a ground contact device (4) for working on a ground region (5) located below the ground contact device (4) in the working position of the piece of equipment (1), a driving device which can be operated by an electric motor in order to produce a working movement of the ground contact device (4), an electrical energy accumulator (7), enclosed by a housing, for supplying the electric motor with electrical energy, and a covering device (9) for covering the housing and thus the energy accumulator (7), which covering device is arranged above the energy accumulator (7) in the working position. The piece of equipment (1) may for example be a tamper, a vibration plate, a roller or a breaker.