Brake ECU Oil Intrusion Sensing to Protect PCB and Prevent Fire
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Solution Overview
Problem
The electrification of vehicle brake systems has led to a fire risk due to brake oil entering the electric control unit, causing abnormal operations and short circuits, necessitating a solution to detect oil introduction and prevent such incidents.
Innovation Solution
A vehicle brake system with a detecting sensor placed between the motor connector and the printed circuit board in the electronic control unit, utilizing electrode parts and an absorption layer to detect and absorb introduced oil, preventing it from reaching the PCB and triggering a notification or current block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the brake system is electrified to improve braking control precision, then the braking control precision is improved, but the fire risk increases due to brake oil entering the electric control unit
Solution Approach 1:
The detecting sensor is installed in advance within the electric control unit to detect brake oil before it causes harmful effects. The sensor proactively monitors for oil presence and triggers warnings or protective actions before the oil can reach critical components and cause fires
Solution Approach 2:
The detecting sensor acts as an intermediary between the brake oil and the electric control unit components. It detects the presence of brake oil and mediates by triggering protective measures (warnings, current blocking) to prevent the oil from causing direct harm to electrical components
2Object-affected harmful factors
If a detecting sensor is installed to detect oil introduction, then the fire risk is reduced, but the device complexity increases
Solution Approach 1:
The detecting sensor is extracted as a separate, dedicated component within the electric control unit. This allows the detection function to be implemented independently using simple electrode parts and absorption materials, rather than trying to integrate detection into existing complex control circuitry
Solution Approach 2:
The detecting sensor uses simple, inexpensive components such as electrode parts and absorption materials that can be easily replaced if needed. The sensor design prioritizes cost-effectiveness and simplicity over long-term durability, using materials that are cheap and functional rather than expensive and complex
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
Effectively detects oil introduction, allowing for driver notification and potential current blockage, thereby preventing fires and maintaining system functionality.
Implementation Method 1
at least two electrode parts which are disposed to be spaced apart from each other and electrically connected by introduced oil
Implementation Method 2
The detecting sensor may include an absorption part which absorbs the introduced oil
Data Source
AI summary
The present invention relates to a vehicle brake system. To this end, the vehicle brake system according to one aspect of the present invention includes an electric motor, a brake oil pump operated by the electric motor, and an electronic control unit including a motor connector to control the electric motor, and the electronic control unit includes a detecting sensor configured to detect oil introduced through the motor connector.