Releasable Power Electronics Connection Device Sealing
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Solution Overview
Problem
Existing power electronics systems require time-consuming and costly impermeability testing after mechanical connection to the transmission, which can be avoided by designing a connection device that allows for pre-testing and seals the interface between power electronics and transmission.
Innovation Solution
A connection device that can be electrically and mechanically connected in a releasable manner to both the power electronics and transmission systems, providing a sealed interface that allows for pre-testing of impermeability and simplifies the replacement and servicing of power electronics systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the power electronics system is mechanically connected to the transmission after delivery, then the transmission can be assembled, but impermeability testing must be conducted after installation which is time-consuming and expensive
Solution Approach 1:
The connection device enables impermeability testing to be performed in advance during power electronics system manufacturing, before the system is delivered to and installed in the transmission. This preliminary testing action eliminates the need for time-consuming post-installation testing, directly resolving the technical contradiction by shifting the testing timing to an earlier stage when the system is still accessible and can be tested independently.
2Reliability
If the connection device provides a sealed interface for pre-testing, then impermeability can be tested before delivery, but the device complexity increases
Solution Approach 1:
The connection device is designed to perform multiple functions: it provides electrical connection between power electronics and transmission, enables mechanical mounting, and creates a sealed interface for impermeability testing. By integrating these multiple functions into a single device, the patent achieves reliable sealing for pre-testing without proportionally increasing overall device complexity, as the sealing function is combined with existing connection and mounting capabilities.
3Ease of repair
If the power electronics system is designed for easy replacement, then servicing is simplified, but the connection device must be designed for releasable connection which may affect structural integrity
Solution Approach 1:
The connection device incorporates a releasable connection mechanism that allows the power electronics system to be easily removed and replaced for servicing. The connection transitions from a fixed permanent state to a dynamic reversible state, enabling both easy repair (by allowing removal) and maintained structural integrity (through proper engagement during operation). The releasable nature allows the connection to adapt between secured and disconnected states as needed.
Data Source
AI summary
A connection device may include a releasable electrical connection between a first current conducting element of a power electronics system and a second current conducting element of a transmission. The connection device may be configured such that it is removably locatable in a first opening in at least one of a power electronics housing and a second opening in a transmission housing. A transmission for a motor vehicle may include the connection device.