Compact Electrical Driving Device with Optimized Wire Arrangement
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Summary
Problems
Existing electrical driving devices for vehicles, particularly those using brushless motors, face challenges in minimizing size due to the arrangement of connecting terminals and wires, leading to increased radial dimensions and complexity in electrical connections.
Innovation solutions
The electrical driving device incorporates a brushless motor with a detection member, rotational angle sensor, semiconductor modules, and motor wires arranged in a concentric circular pattern, allowing for a more compact design and flexible wire placement, which reduces the size and enhances the ease of connection and commonality of semiconductor modules.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If connecting terminals are arranged in a straight line, then electrical connection is simplified, but device size in radial direction increases
Why choose this principle:
The patent applies curvature by arranging motor wires in a concentric circular pattern around the detection magnet rather than in straight lines. This circular arrangement allows the wires to fit within a compact radial space while maintaining electrical connections, directly resolving the contradiction between simplified wiring and reduced radial size.
Principle concept:
If multiple motor wires are arranged compactly, then device size is reduced, but detection error increases
Why choose this principle:
The patent employs asymmetric arrangement of motor wires relative to the detection magnet. By positioning wires at specific asymmetric angular intervals rather than uniformly symmetric positions, the design achieves compact radial packing while minimizing magnetic interference with the detection magnet, thus maintaining position detection accuracy despite reduced device size.
Application Domain
Data Source
AI summary:
The electrical driving device incorporates a brushless motor with a detection member, rotational angle sensor, semiconductor modules, and motor wires arranged in a concentric circular pattern, allowing for a more compact design and flexible wire placement, which reduces the size and enhances the ease of connection and commonality of semiconductor modules.
Abstract
A first power control system has a first to a third motor wires and a second power control system has a fourth to a sixth motor wires. The first to the third motor wires and the fourth to the sixth motor wires are located on a concentric circle of a center of a magnet and located to be symmetrical to each other with respect to the magnet. The first and the third motor wires, which are located at both sides of the second motor wire in a circumferential direction of an electric motor portion, are asymmetrically arranged with respect to the second motor wire. The fourth and the sixth motor wires, which are located at both sides of the fifth motor wire in the circumferential direction, are asymmetrically arranged with respect to the fifth motor wire. As a result, a size of an electrical driving device can be made smaller.