Modular Battery Motor Unit for Flexible Gearbox Mounting
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Solution Overview
Problem
Existing motor units for power equipment often require complex mounting configurations and lack efficient power management, leading to inefficiencies and increased weight.
Innovation Solution
A stand-alone motor unit with a modular design, featuring a base with an electric motor, a power take-off shaft, a battery pack, and a battery module that can be coupled to the base in multiple positions, allowing for flexible mounting and efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a modular battery module design is implemented, then ease of operation and adaptability are improved, but device complexity increases
Solution Approach 1:
The battery system is divided into modular battery modules that can be independently coupled to the base in different positions. Each battery module contains its own battery pack and can be installed separately, allowing flexible configuration without requiring complex integrated mounting structures.
Solution Approach 2:
The battery modules are designed with universal coupling mechanisms that allow them to be mounted in multiple positions (first position with side wall parallel to second side, second position with side wall perpendicular to second side). This multi-position capability provides adaptability for different equipment configurations without requiring position-specific mounting hardware.
2Adaptability or versatility
If multiple mounting positions are allowed, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The battery module housing includes asymmetric coupling features (protrusions and recesses) that guide proper orientation during installation. The asymmetric design ensures that even when mounted in different positions, the components align correctly without requiring high manufacturing precision, as the asymmetric features provide mechanical guidance for proper positioning.
3Ease of repair
If battery modules are removably coupled, then ease of repair and adaptability are improved, but reliability may worsen due to connection points
Solution Approach 1:
The battery packs are extracted as separate, removable components from the battery modules. This allows individual battery packs to be easily replaced without removing the entire battery module or disturbing other connections, maintaining system reliability while enabling simple maintenance. The extraction principle ensures that only the consumable battery pack is removed, not the reliable module housing and coupling mechanisms.
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 motor unit provides a compact, lightweight, and efficient power solution for power equipment, with flexible mounting options and improved energy management, reducing energy consumption and extending runtime.
Implementation Method 1
a battery pack, and a battery module removably coupled to the base. The battery module includes a side wall and a battery receptacle for receiving the battery pack, such that when the battery module is coupled to the base and the battery pack is received in the battery receptacle, the battery pack provides power to the motor
Implementation Method 2
an electric motor arranged in the base and including an output shaft, a power take-off shaft receiving torque from the motor
Data Source
AI summary
A stand-alone motor unit includes a housing and an electric motor. The electric motor includes a stator, a rotor rotatable relative to the stator and having an output shaft, a housing in which the stator and rotor are arranged, and an adapter plate coupled to the housing. The adapter plate includes a first plurality of holes defining a first hole pattern. The output shaft of the rotor protrudes from the adapter plate. The motor unit further includes a battery pack for providing power to the motor, a power take-off shaft protruding from the housing, and a gearbox including a second plurality of holes defining a second hole pattern that is identical to the first hole pattern, such that when the first hole pattern is aligned with the second hole pattern, the gearbox is configured to be coupled to the adapter plate.