Large scale battery management system

Abstract

The invention provides a large-scale battery management system comprising at least one voltage collection circuit, a temperature collection circuit, a current collection circuit and a central control circuit MCU; the voltage collection circuits are used for collecting voltage of each single battery in a battery pack; the temperature collection circuit is used for collecting working temperature of the battery pack; the current collection circuit is used for collecting charging and discharging current information of the battery pack; the output ends of the voltage collection circuits are electrically connected with the central control circuit MCU; the output end of the temperature collection circuit is electrically connected with the central control circuit MCU; the current collection circuit is electrically connected with the central control circuit MCU; the voltage collection circuits are electrically connected in a daisy chain mode. Large-scale batteries can be effectively monitored and managed, the reliability is high, the large-scale batteries can operate durably and stably, the system structure is simplified, the size is reduced, and the use cost can be lowered.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a large-scale battery management system. Background technique [0002] In electric vehicles, the battery supplies power to the outside through a battery pack composed of multiple single cells. In order to ensure the continuous and stable operation of the battery, it is necessary to track and monitor each single cell of the battery in real time, such as battery temperature and battery voltage. And charging and discharging current and other parameters, so the battery management system is required to detect the battery, especially for mines, due to the requirements of the coal mine lithium battery industry standard, the capacity of the single battery is required to be no more than 100Ah, in order to ensure the requirements of underground operations, so Large-scale batteries are needed to meet the requirements, and the existing battery management systems are mainly aimed at sm...

AI Technical Summary

Problems solved by technology

[0002] In electric vehicles, the battery supplies power to the outside through a battery pack composed of multiple single cells. In order to ensure the continuous and stable operation of the battery, it is necessary to track and monitor each single cell of the battery in real time, such as battery temperature and battery voltage. And charging and discharging current and other parameters, so the battery management system is required to detect the battery, especially for mines, due to the requirements of the coal mine lithium battery industry standard, the capacity of the single battery is required to be no more than 100Ah, in order to ensure the requirements of underground operations, so Large-scale batteries are needed to meet the requirements, and the existing battery management systems are mainly aimed at small-scale battery packs. The reliability of the monitoring is reduced, and the system structure is complex, the volume is large, and the cost of use is also greatly increased

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