Flip-Flop Relay Hold Circuit for Vehicle BMS Power Interruptions
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Solution Overview
Problem
In vehicle battery management systems, unexpected interruptions to the power supply can lead to immediate power loss, making it difficult to maintain vehicle power during emergency situations.
Innovation Solution
A system using a flip-flop controlled by a control unit within the battery management system, where operation power is supplied through a monitoring circuit connected to the vehicle battery, maintaining the relay's closed state and conserving power for a predetermined time using a clock signal generating unit, isolator, transformer, and signal converting unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery management system operation power is interrupted, then power loss occurs immediately, but power should be maintained for a predetermined time during emergency situations
Solution Approach 1:
The flip-flop circuit is pre-configured with a clock signal generating unit that automatically activates when power interruption is detected, maintaining the relay closed state for a predetermined time without requiring complex control logic or additional power sources
Solution Approach 2:
The system uses its existing clock signal generating unit to power the flip-flop circuit during emergency situations, allowing the system to maintain power for a predetermined time using resources already available within the battery management system
Data Source
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AI summary
The present invention relates to a system and a method for controlling a relay using a flip-flop, which install a flip-flop controlling a relay by receiving a signal of a control unit in a battery management system of a vehicle and supply flip-flop operation power to the flip-flop through a monitoring circuit connected to a battery of the vehicle when operation power of the battery management system of the vehicle is interrupted to maintain a closing state of a relay controlling driving power of the vehicle and conserve power of the vehicle for a predetermined time.