High Voltage Interlock Device Signal Isolation Conversion Module
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Solution Overview
Problem
Existing high voltage interlock devices face safety issues due to direct connection between high voltage components and fault detection modules, which can lead to damage from large external voltages, compromising the safety of the interlock system.
Innovation Solution
Incorporating a signal isolation conversion module that converts electrical signals from high voltage components into isolated signals for the fault detection module, preventing direct connection and potential damage, thereby enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If high voltage components are directly connected to fault detection module, then signal transmission is simple and direct, but the fault detection module may be damaged by large external voltage
Solution Approach 1:
The patent introduces an isolation conversion module as an intermediary between the high voltage component and the fault detection module. This module converts the high voltage signal to a safe low voltage signal while maintaining electrical isolation, thus protecting the fault detection module from damage while enabling reliable fault detection.
2Reliability
If isolation conversion module is added, then fault detection module safety is improved, but device complexity increases
Solution Approach 1:
The isolation conversion module serves as a compact intermediary device that provides both voltage conversion and electrical isolation functions in an integrated manner, minimizing the increase in device complexity while maximizing safety benefits.
Solution Approach 2:
The isolation conversion module performs multiple functions simultaneously: voltage conversion, electrical isolation, and signal transmission, thereby reducing the need for separate components and minimizing overall device complexity despite adding safety features.
Data Source
AI summary
The application provides a high voltage interlock circuit and a detection method thereof, the high voltage interlock circuit comprises: a signal isolation conversion module, and a fault detection module. The high voltage interlock device and the detection method thereof provided by the embodiments of the application can avoid the damage to the fault detection module caused by large external voltage, and improve the safety of the high voltage interlock device.