Brake Control ECU Power Link Circuit for Fault Bypass
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Solution Overview
Problem
Conventional electronic control units for brake control devices complicate power circuits with redundant power supplies to each load, leading to increased complexity and potential failures.
Innovation Solution
An electronic control unit with a first and second power source line, a link line connecting the second power source line to the first power source line, and a link relay arranged in the link line, allowing for bypassing of failed power source lines to maintain power supply to loads, thereby simplifying the power circuit and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant power supply is provided to each load through separate power source lines, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges the power source lines by introducing a link line that connects the first and second power source lines. This allows the power source lines to function independently during normal operation while providing a shared backup path, thereby reducing overall circuit complexity without sacrificing reliability. The link line acts as a bridge that enables power redistribution when needed.
Solution Approach 2:
The link line serves as an intermediary element between the first and second power source lines. It mediates power flow by allowing electricity to transfer from one power source line to another when a failure occurs, thus maintaining power supply reliability while avoiding the need for completely separate redundant circuits for each load.
2Reliability
If separate power source lines are used for each load, then reliability is improved, but ease of manufacture deteriorates
Solution Approach 1:
By merging the power source lines through the link line, the patent reduces the total number of separate connections required during assembly. This makes the circuit easier to manufacture while still providing redundant power paths, as the link line creates an integrated structure rather than requiring completely independent circuits.
3Reliability
If redundant power supply configuration is implemented, then reliability is improved, but the number of components increases
Solution Approach 1:
The link line serves multiple functions: it connects the first and second power source lines, provides a backup power path during failures, and enables power redistribution between loads. This multi-functionality reduces the need for additional dedicated components for each redundancy function, thereby limiting the increase in component quantity while maintaining reliability.
Data Source
AI summary
A control unit comprises a first power source line connecting a vehicle power source and a motor, a second power source line connecting the vehicle power source and a plurality of electromagnetic valves, a solenoid relay arranged in a second power source line, a link line connecting a portion of the second power source line, which extends between the solenoid relay and the plurality of electromagnetic valves, to the first power source line, and a link relay arranged in the link line.