Battery Pack Sleep-Mode Rollback for Fast Activation Response
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Solution Overview
Problem
Battery management systems face delays in responding to activation requests when transitioning from a low power state to a normal state due to the time-consuming nature of the switching procedure, which is problematic for applications requiring quick responses, such as electric vehicles.
Innovation Solution
A battery management apparatus and method that includes a processor and memory to perform a procedure for switching a battery pack to a sleep mode when no request is received from the upper system, with the ability to check for activation requests during each operation and perform rollback operations to exit the sleep mode procedure and return to a normal state upon receiving an activation request.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the battery management system performs a complete switching procedure to sleep mode, then power consumption is reduced, but the response time to activation requests increases
Solution Approach 1:
The system checks for activation requests at predetermined timing points during the sleep mode switching procedure, before the switching is complete. This preliminary checking allows the system to detect activation requests early and abort the sleep mode transition, significantly reducing the response time while still allowing the system to enter sleep mode when no requests are present
Solution Approach 2:
The system dynamically adjusts the sleep mode switching procedure by introducing interruptible checking points. The switching procedure is no longer a fixed sequential process but can be dynamically terminated at predetermined timing points when activation requests are detected, making the system adaptable to changing operational requirements
2Loss of time
If the battery management system checks for activation requests frequently during switching, then response time is reduced, but system complexity increases
Solution Approach 1:
Instead of continuously monitoring for activation requests throughout the entire switching procedure, the system performs partial checking at specific predetermined timing points. This selective checking approach provides sufficient responsiveness for most activation requests while avoiding the complexity of continuous monitoring mechanisms
Data Source
AI summary
According to an embodiment of the present disclosure, a method for controlling a battery system by a battery management system may comprise: performing a procedure for switching a state of at least one battery pack to a sleep mode which is a low power state, in response to no request for use of the battery system having been received from an upper system for a predetermined period of time; exiting the procedure for switching to the sleep mode, in response to a request for activating the battery system that is received from the upper system during performing a plurality of operations included in the procedure for switching to the sleep mode; and switching the state of the at least one battery pack to a normal state.