Detachable Battery Receptacle Layout for Low-Vibration Motor Units
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Solution Overview
Problem
Vibrations from the housing of a motor unit are transmitted to the battery, causing potential damage or discomfort due to the fixed attachment of the battery to the housing.
Innovation Solution
The motor unit is configured with a detachable second battery receptacle on the working unit, allowing the battery to be attached separately, reducing vibration transmission and incorporating a cable for power supply, with a control circuit board to manage power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery is fixed to the housing that houses the electric motor, then the structure is simplified and power supply is ensured, but vibrations from the electric motor are transmitted to the battery causing potential damage
Solution Approach 1:
The battery system is segmented into two separate receptacles: a first battery receptacle on the housing and a second battery receptacle on the working unit. This segmentation allows the battery to be physically separated from the vibration source (electric motor in housing) while maintaining power supply capability through the adapter and cable system.
Solution Approach 2:
An adapter is introduced as an intermediary component between the first battery receptacle and the second battery receptacle. The adapter includes a cable that connects to the second battery receptacle or second battery, serving as a mediator that transmits power while allowing physical separation and vibration isolation between the battery and the housing.
2Ease of operation
If the battery is detachably attached to the housing, then accessibility and versatility are improved, but connection reliability may be compromised
Solution Approach 1:
The battery system is divided into detachable components with separate receptacles on the housing and working unit. This segmentation enables easy attachment and detachment of the battery while maintaining reliable connections through properly designed receptacle interfaces and cable connections.
Solution Approach 2:
The battery connection system transitions from a fixed static connection to a dynamic detachable connection. The first and second battery receptacles are designed to allow the battery to be attached and detached as needed, providing operational flexibility while maintaining connection reliability through proper interface design.
3Object-affected harmful factors
If a second battery receptacle is added on the working unit, then vibration transmission to the battery is reduced, but device complexity increases
Solution Approach 1:
The battery power system is segmented into two receptacles positioned at different locations (housing and working unit). This segmentation effectively reduces vibration transmission to the battery by placing the second receptacle away from the electric motor, while the modular design keeps the added complexity manageable.
Solution Approach 2:
The adapter serves multiple functions: it connects to the first battery receptacle, provides a cable connection to the second battery receptacle or second battery, and enables power transmission while isolating the battery from vibrations. This multi-functionality justifies the added component by consolidating several roles into one element.
Data Source
AI summary
A motor unit may include an output shaft; an electric motor; a housing; a first battery receptacle disposed on the housing and configured to allow a first battery to be detachably attached thereto; a second battery receptacle disposed on a working unit and configured to allow a second battery to be detachably attached thereto; an adapter attachable to the first battery receptacle in place of the first battery; a cable extending from the adapter and configured to connect to either the second battery receptacle or the second battery; and a control circuit board. When the first battery is attached to the first battery receptacle, power may be supplied from the first battery to the electric motor. When the adapter is attached to the first battery receptacle and the second battery is attached to the second battery receptacle, power may be supplied from the second battery to the electric motor.