Plug-In Connection Element With Temperature-Triggered Resistance Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-voltage plug-in connections in electric vehicles are prone to overheating and overload, leading to inefficient and unreliable protection against temperature-related electrical issues.
Innovation Solution
The plug-in connection element incorporates electrically isolated conductive parts with a protective element that reduces resistance as temperature increases, detectable by a monitoring device, and includes a safety line with a protective element that increases resistance upon overheating, ensuring reliable protection by disconnecting the power line when thresholds are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first contact part and further part are electrically isolated to prevent short circuits, then electrical safety is improved, but temperature monitoring capability deteriorates
Solution Approach 1:
A protective element is introduced as an intermediary component between the first contact part and the further part. This protective element serves dual functions: it maintains electrical isolation under normal conditions while providing a temperature-dependent resistance path that enables temperature monitoring without compromising electrical safety.
Solution Approach 2:
The protective element exhibits parameter changes based on temperature variations. Its electrical resistance changes with temperature, allowing the monitoring device to detect temperature increases through resistance measurements while the component remains electrically isolated under normal operating conditions.
2Measurement precision
If a protective element is added to enable temperature monitoring, then temperature detection capability is improved, but device complexity increases
Solution Approach 1:
The protective element performs multiple functions simultaneously: it provides electrical isolation between contact parts, serves as a temperature sensor through its resistance-temperature characteristic, and protects against overheating. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The protective element serves itself as both an insulating component and a temperature sensing element. Its inherent resistance-temperature characteristic is utilized for monitoring purposes without requiring additional sensing mechanisms, allowing the component to contribute to temperature monitoring while maintaining its primary isolation function.
3Reliability
If the protective element reduces resistance as temperature increases, then temperature monitoring reliability is improved, but risk of short circuit increases
Solution Approach 1:
The protective element's resistance reduction at high temperatures, which could potentially cause short circuits, is converted into a beneficial monitoring signal. The resistance change serves as a reliable indicator of temperature conditions, allowing the monitoring device to detect and respond to thermal events before dangerous short circuits occur.
Solution Approach 2:
The monitoring device continuously monitors the resistance of the protective element and provides feedback about temperature conditions. This feedback mechanism allows the system to respond to temperature increases by triggering protective measures before the resistance reduction could lead to harmful short circuits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient and reliable temperature monitoring and protection of high-voltage plug-in connections, preventing overheating and ensuring safe operation by automatically disconnecting the power line when temperature thresholds are reached, thus preventing damage.
Implementation Method 1
a protective element which is designed to reduce the electrical resistance between the first contact part and the further part as the temperature increases
Implementation Method 2
a safety line with a protective element that increases resistance upon overheating, ensuring reliable protection by disconnecting the power line when thresholds are exceeded
Data Source
AI summary
A plug-in connection element for a plug-in connection includes an electrically conductive first contact part which is configured to form an electrically conductive connection with a complementary first contact part of a complementary plug-in connection element of the plug-in connection. The plug-in connection element also includes at least one further electrically conductive part, and at least one protective element which is configured to reduce an electrical resistance between the first contact part and the further part as the temperature increases.