Energy storage system

Abstract

The invention relates to the field of energy storage technologies, in particular, to an energy storage system comprising a battery system, a battery system control unit connected to the battery system, and an energy storage inverter PCS. The battery system includes at least one battery module group including a plurality of single batteries connected in series and battery management systems (BMS) corresponding to the battery modules one by one. The battery system control unit is connected with the energy storage inverter PCS. The battery system control unit collects state parameters of the battery system, determines the fault type of the battery system based on the state parameters, and reports the fault type to the energy storage inverter PCS; and the energy storage inverter PCS controls the charging / discharging of the battery system based on the fault type. According to the invention, the fault type can be reported; the user can find out a fault timely and thus take necessary measures; the energy storage inverter PCS is able to control the charging / discharging of the battery system for different types of faults, so that the safety of the battery system is improved and the servicelife of the battery system is prolonged.

Description

technical field [0001] The invention relates to the technical field of energy storage, in particular to an energy storage system. Background technique [0002] With the intensification of the global energy crisis and the deteriorating environment, changes in the energy field are imminent, and new energy power generation methods such as wind and scenery have emerged and gradually developed. [0003] The current home energy storage system has a variety of applications, and MOS is mostly used as switch control. In the case of high current, the burnout protection function is prone to failure, and there is no alarm and no effective measures are taken, resulting in dangers such as combustion and explosion. In addition, the current products and The PCS did not communicate effectively, and did not take safer measures for the battery system when multi-level alarms occurred, resulting in damage to the life and safety performance of the battery itself and eventually led to danger. Mor...

AI Technical Summary

Problems solved by technology

[0003] The current home energy storage system has a variety of applications, and MOS is mostly used as switch control. In the case of high current, the burnout protection function is prone to failure, and there is no alarm and no effective measures are taken, resulting in dangers such as combustion and explosion. In addition, the current products and The PCS did not communicate effectively, and did not take safer measures for the battery system when multi-level alarms occurred, resulting in damage to the life and safety performance of the battery itself, which eventually led to danger.

Moreover, the existing energy storage system is not clear enough in its operating state and after a failure occurs, which is not conducive to the maintenance of the user's use

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