Battery Pack Sleep Exit Control for Faster Wake Response
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Solution Overview
Problem
Existing battery management systems take a considerable amount of time to transition from a low-power state to a normal state in response to a request from an upper system, leading to processing delays.
Innovation Solution
A battery management system that includes instructions for switching to a sleep mode upon no request for a predetermined period, checking for activation requests during operations, and performing rollback operations in reverse order to exit the sleep mode quickly upon receiving a request.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the battery management system enters a sleep mode to save energy, then energy consumption is reduced, but the response time to upper system requests increases
Solution Approach 1:
The patent implements dynamic state transitions by introducing intermediate wake-up states between sleep mode and full operation mode. The system can transition from sleep mode to a partial wake-up state quickly, and then to full operation mode, allowing flexible response to different request priorities while managing power consumption effectively
Solution Approach 2:
The patent performs preliminary actions by pre-loading critical data and maintaining certain system components in a ready state even during sleep mode. This allows the system to minimize the time required to transition from sleep mode to operational state when a request is received, reducing the effective response time penalty
2Loss of energy
If the battery management system completes all switching operations to sleep mode, then power saving is maximized, but the system cannot respond to urgent requests from the upper system
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors for requests from the upper system during the sleep mode transition process. When a request is detected, the system provides feedback to interrupt the sleep mode entry and initiate wake-up procedures, ensuring the system can adapt to changing requirements while maintaining power savings
Data Source
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AI summary
According to another embodiment of the present disclosure, a method for controlling a battery system by a battery management system, the method 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.