Motor Bus Bar Assembly With Integrated Temperature Sensing
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Solution Overview
Problem
The existing motor designs require separate wiring for the temperature detection unit to the control device, which is time-consuming and complicates the manufacturing process, and often necessitate additional structures to protect the wiring from vibration and impact.
Innovation Solution
A motor unit design that integrates a bus bar unit with a temperature detection unit, where the bus bar connection portion protrudes from a holding portion and overlaps with a connection portion of the energization unit, allowing for direct electrical connection to the inverter unit, eliminating the need for separate wiring and additional protective structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate wiring is used to connect the temperature detection unit to the control device, then the temperature can be detected, but the manufacturing time and effort increase
Solution Approach 1:
The patent combines the temperature detection unit with the bus bar unit into a single integrated assembly. The temperature detection portion is mounted on the bus bar unit, and both are held together by the same holding portion, eliminating the need for separate wiring connections to the control device.
2Reliability
If separate wiring is used for the temperature detection unit, then temperature monitoring is achieved, but the structure becomes complicated and requires additional protective structures
Solution Approach 1:
The temperature detection unit and bus bar unit are merged into a single integrated structure where both components are mounted on the same holding portion. This integration eliminates separate wiring paths and reduces the need for additional protective structures against vibration and impact.
Solution Approach 2:
The holding portion serves multiple functions: it holds the bus bar, holds the temperature detection unit, and provides structural support for both components simultaneously. This multi-functionality reduces the overall number of components and simplifies the structure.
Data Source
AI summary
An inverter unit electrically connected to a stator and a bus bar unit electrically connecting the stator and the inverter unit are included. The bus bar unit includes a temperature detection unit that detects a temperature of a bus bar, and a holding portion that holds the bus bar and the temperature detection unit. A connection portion protruding from the holding portion of the temperature detection unit and electrically connected to the inverter unit radially overlaps the bus bar connection portion protruding from the holding portion of the bus bar and electrically connected to the inverter unit.