Rotary Electric Machine Connectors with Differential Current Capacity
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Solution Overview
Problem
The existing drive device-integrated rotary electric machines require increased device size to accommodate two sets of power supply connectors, compromising space and ease of installation.
Innovation Solution
A drive device-integrated rotary electric machine design featuring two sets of power supply connectors with differing voltage and current capacities, where the first power supply connector has a higher voltage and lower current capacity than the second, allowing for reduced connector size without compromising redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two sets of power supply connectors with the same current capacity are provided to ensure redundancy, then reliability is improved, but device size increases
Solution Approach 1:
The patent applies parameter changes by differentiating the current capacity parameters of the two power supply connectors. The first power supply connector is designed with a first current capacity while the second power supply connector has a second current capacity that is smaller than the first. This parameter differentiation allows the connectors to have different physical sizes, enabling space optimization while maintaining redundancy functionality.
Solution Approach 2:
The patent implements local quality by assigning different current capacities to different connectors based on their specific functional requirements. The first power supply connector with higher current capacity is allocated to the first rotary electric machine, while the second connector with lower current capacity serves the second rotary electric machine. This localized optimization of connector specifications reduces overall device size while ensuring each connector is appropriately sized for its specific application.
2Reliability
If two sets of power supply connectors are provided for redundancy, then reliability is improved, but ease of mounting deteriorates
Solution Approach 1:
The patent differentiates connector parameters to optimize mounting characteristics. By setting the second current capacity smaller than the first, the second power supply connector can be designed with reduced dimensions, making it easier to mount in space-constrained areas while the first connector handles the primary power supply with higher current requirements.
Solution Approach 2:
The patent optimizes mounting ease by locally adapting connector specifications to their respective installation environments. The first connector is designed for the primary power supply application requiring higher current capacity, while the second connector is optimized with lower current capacity and correspondingly smaller size for easier installation in the second rotary electric machine's power supply location.
Data Source
AI summary
The invention includes a first power supply connector, which connects a first inverter unit that supplies a drive current to a first three-phase winding of a rotary electric machine to a first vehicle power supply, and a second power supply connector, which connects a first second inverter unit that supplies a drive current to a second three-phase winding of the rotary electric machine to a second vehicle power supply, wherein a voltage of the first vehicle power supply is higher than a voltage of the second vehicle power supply, and a current capacity of the first power supply connector is smaller than a current capacity of the second power supply connector.