Battery Cable Detection Shield for Early Insulation Failure Warning
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Solution Overview
Problem
Existing electrical cables in vehicles, particularly in class 7 and 8 vehicles, face issues with insulation damage due to harsh environments, leading to thermal events and short circuits, which traditional fuses and fusible links fail to address effectively, and require early detection to prevent electrical and thermal failures.
Innovation Solution
A system with a conductive layer and secondary insulation layer on battery cables, monitored by a controller, provides early warning of insulation damage through voltage and current monitoring, and a smart fusible link ensures correct installation, preventing vehicle startup if damage or improper installation is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fuses and fusible links are used for battery cable protection, then the system is simple and inexpensive, but they fail to detect insulation damage early and cannot prevent thermal events and short circuits
Solution Approach 1:
The patent implements a nested detection structure where a detection shield is positioned inside the insulation layer, which is itself inside the outer jacket. This nested arrangement allows the detection system to be integrated within the existing cable structure without adding external complexity, enabling early insulation damage detection while maintaining system simplicity
Solution Approach 2:
The detection shield continuously monitors for insulation damage before it leads to short circuits or thermal events. By performing preliminary detection of insulation integrity through electrical signal monitoring, the system can alert operators to potential failures before they occur, preventing catastrophic failures rather than responding after damage has happened
2Reliability
If a detection shield with continuous monitoring is implemented, then early insulation damage can be detected, but the device complexity and cost increase
Solution Approach 1:
The detection shield acts as an intermediary element between the inner conductor and the insulation layer. It provides a medium through which electrical signals can be monitored to detect insulation damage without requiring complex external monitoring equipment. The shield translates physical insulation integrity into measurable electrical parameters that can be easily monitored by the vehicle controller
Solution Approach 2:
The detection shield serves multiple functions: it provides electrical shielding, enables insulation damage detection, and acts as a sensor for the vehicle controller. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving reliable early detection and prevention of battery cable failures
3Object-affected harmful factors
If the vehicle controller prevents vehicle startup upon detecting insulation damage, then safety is improved, but operational availability decreases
Solution Approach 1:
The system applies preliminary anti-action by preventing vehicle startup before thermal events or short circuits can occur. The vehicle controller monitors the detection shield signals and blocks startup attempts when insulation damage is detected, counteracting the potential harmful effects before they manifest. This proactive safety measure prevents catastrophic failures while allowing normal operation when the cable is healthy
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
Enables early detection of insulation damage, reducing the risk of short circuits and thermal events by providing proactive warnings and ensuring the correct fusible link is installed, thereby preventing vehicle startup until issues are resolved.
Implementation Method 1
The at least one vehicle controller is programmed to: receive a first signal indicative of current or voltage of the detection shield of the battery cable
Data Source
AI summary
In at least one embodiment, a system including a battery cable and at least one vehicle controller is provided. The battery cable includes a detection shield positioned over an inner conductor. The at least one vehicle controller is programmed to: receive a first signal indicative of current or voltage of the detection shield of the battery cable and to compare the current or voltage to a predetermined value. The at least one vehicle controller is further programmed to generate an alert indicative of warning that the battery cable is exhibiting a failure prior to a short circuit condition occurring at the battery cable in the event the current or voltage is not equal to the predetermined value.