A method and system for connecting and configuring a multi-module backup battery management system and a DC bus

Abstract

The invention relates to a method and system for the connection and configuration of a multi-module backup battery management system and a DC bus. The DC bus obtains electrical energy from external power supply equipment and supplies it to electrical consumers. The multi-module backup battery management system is connected to the DC bus to realize real-time charge and discharge control of the multi-module backup battery or battery pack and the DC bus, as well as detection and alarm functions. When the DC bus voltage drops to the threshold value, the multi-module battery or battery pack discharges the DC bus, so that the DC bus returns to the normal voltage range; when the DC bus returns to the normal voltage for power supply, the DC bus passes through the charging function circuit. or battery pack for continuous or intermittent charging to ensure that the multi-module battery or battery pack can maintain the ability to re-discharge the DC bus at any time.

Description

technical field [0001] The invention belongs to the field of circuit devices or systems for power supply or distribution, and electric energy storage systems, and specifically relates to the docking and interaction technology between a backup battery management system and a corresponding DC bus. Background technique [0002] At present, the battery management system in the existing technology mostly adopts a centralized battery management system, which mainly includes the data acquisition circuit of the total voltage, current and temperature of the battery pack, the isolation circuit of the voltage, the switch control circuit of the high voltage and the fan, A / D conversion circuit, data storage and transmission module and so on. The working principle of the centralized battery management system is that the front-end data acquisition module collects voltage, current and temperature, and then performs unified conversion, processing and storage of the data, as well as some nec...

AI Technical Summary

Problems solved by technology

[0004] (1) The signal acquisition of the battery pack cannot detect each battery cell, the accuracy is poor, and the signal processing requirements are high;

[0005] (2) Its scalability is weak, its adaptability is not strong, and it is difficult to adapt to load changes;

[0006] (3) Only the entire battery pack can be replaced when the battery fails

The focus of the distributed energy management technology based on the DC bus is to solve the macroscopic relationship between supply, demand, and storage. Currently, the existing technical solutions lack the system and microcosmic connection between the multi-module backup battery management system and the DC bus under macro management. management technology

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