Adaptable BEV Electric Motor Layout Around Cabin Space
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Solution Overview
Problem
Electric motors and other propulsion elements in electric vehicles intrude into the cabin volume, compromising comfort and aerodynamic efficiency, and existing technologies for compact packaging involve inefficient materials and designs.
Innovation Solution
An adaptable electric motor design featuring a stator unit with coupled winding elements and a rotor unit with shuttles that can adjust its shape to circumvent the cabin, allowing for flexible cabin volume adjustments and improved propulsion efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional electric motors and propulsion elements are used, then propulsion function is achieved, but cabin volume is reduced and aerodynamic efficiency deteriorates
Solution Approach 1:
The electric motor is divided into modular components (stator, rotor, housing) that can be independently designed and optimized. The propulsion system is segmented into discrete elements that can be strategically positioned to minimize cabin intrusion while maintaining aerodynamic efficiency
Solution Approach 2:
The patent positions propulsion elements in three-dimensional space around the cabin rather than simply beneath it. By utilizing vertical and lateral dimensions, the motor configuration achieves aerodynamic efficiency without compromising cabin volume
2Volume of moving object
If electric motors are made compact to increase cabin volume, then cabin space is improved, but propulsion performance may be compromised
Solution Approach 1:
The patent employs nested positioning where the rotor is positioned within the stator, and propulsion elements are arranged in concentric or layered configurations. This nesting allows maximum power density in a compact footprint, maintaining propulsion performance while minimizing space occupation
Solution Approach 2:
The motor housing and structural components utilize thin-walled yet high-strength designs that maintain structural integrity for power transmission while occupying minimal volume. Flexible mounting systems allow precise positioning to optimize both compactness and performance
3Object-affected harmful factors
If propulsion elements are positioned to improve aerodynamic efficiency, then aerodynamic performance is improved, but cabin volume and comfort are reduced
Solution Approach 1:
The patent employs asymmetric positioning of propulsion elements, with the motor housing and associated components arranged in non-uniform configurations that streamline airflow around the vehicle. This asymmetric layout optimizes aerodynamic efficiency while carefully managing clearance to preserve cabin volume
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
Enhances cabin space, improves aerodynamic efficiency, reduces weight and cooling losses, and allows for on-demand adjustments to meet customer needs, while maintaining propulsion performance.
Implementation Method 1
a stator unit comprising a plurality of winding elements coupled together as a chain
Implementation Method 2
a rotor unit comprising one or more shuttles coupled to the plurality of winding elements
Data Source
AI summary
An electric motor can comprise a stator unit comprising a plurality of concentrated or distributed winding elements coupled together as a chain. The electric motor can further comprise a rotor unit comprising one or more shuttles coupled to the plurality of concentrated or distributed winding elements in an arrangement that can impart to the electric motor, a shape that can circumvent a cabin of an electric vehicle comprising the electric motor.