Battery Management System Power Supply Control
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Solution Overview
Problem
Conventional energy supply devices for battery management systems are unreliable and costly, often leading to forgotten manual deactivation, resulting in critical conditions such as deep discharge during storage.
Innovation Solution
An energy supply device with a maintenance device and control means that allows the battery management system to actively maintain and interrupt the energy supply, enabling automatic deactivation to prevent deep discharge, featuring a control mechanism that can be integrated into the system for reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual deactivation of the battery management system is used to prevent deep discharge, then the battery system can be protected from deep discharge, but the operation becomes inconvenient and unreliable because manual deactivation is often forgotten
Solution Approach 1:
The battery management system automatically monitors its own power consumption and the state of charge of the energy storage system, and autonomously deactivates itself when deep discharge is detected, eliminating the need for manual intervention while maintaining reliable protection
Solution Approach 2:
The system continuously monitors parameters such as voltage and state of charge, uses this feedback to detect critical conditions, and automatically triggers deactivation when thresholds are reached, creating a closed-loop control system that prevents deep discharge without manual operation
2Reliability
If the battery management system remains active to monitor battery parameters, then safety monitoring is maintained, but the energy storage system experiences deep discharge during extended storage due to power consumption
Solution Approach 1:
The battery management system dynamically adjusts its operational state based on conditions - remaining active during normal operation for monitoring, and automatically transitioning to a deactivated state during extended storage when the energy storage system approaches deep discharge thresholds, optimizing the balance between monitoring needs and energy conservation
Solution Approach 2:
The system changes its operational parameters (active vs. deactivated state) based on the state of charge of the energy storage system, switching from an active monitoring state to a deactivated low-power state when voltage or charge level falls below predetermined thresholds
3Device complexity
If conventional power supply devices are used without automatic control, then the structure remains simple, but the device becomes expensive to manufacture and operate due to lack of reliable protection
Solution Approach 1:
The battery management system performs multiple functions - it monitors battery parameters for safety, manages power distribution, and simultaneously controls the power supply to itself and other consumers, eliminating the need for separate complex power supply control devices and reducing overall system cost
Data Source
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AI summary
The invention relates to an energy supply device (150) for a battery management system (200) of a battery system (1), in particular a rechargeable lithium battery system (1), wherein the energy supply device (150) comprises a maintenance device (160) for maintaining an energy supply for the battery management system (200), wherein the maintenance device (160) has a control means (161) for control, and the maintenance device (160) can be connected to the battery management system (200) via the control means (161) in such a way that maintenance and interruption of the energy supply by the battery management system (200) can be actively carried out.