Is there a BMS in the energy storage cabinet

What is a stack switchgear (BMS)?

At the battery stack level, when integrated into a Stack Switchgear device, Nuvation Energy’s BMS makes decisions about when it is safe to connect a battery stack to the rest of the energy storage system, and can automatically perform that connection. At Nuvation Energy the term ‘Stack Switchgear’ refers to our battery stack control system.

Are all battery management systems the same?

While all battery management systems (BMS) share certain roles and responsibilities in an energy storage system (ESS), they do not all include the same features and functions that a BMS can contribute to the operation of an ESS.

What happens when a BMS disconnects a battery stack?

When the BMS disconnects a battery stack in response to a battery fault (e.g. overvoltage, over-discharge), Nuvation Energy’s will communicate the reduction in total ESS capacity to the PCS. Alternately, when Nuvation Energy’s Stack Switchgear connects a battery stack to the DC bus, the BMS will communicate the capacity increase to the PCS.

Do battery chemistries need a BMS?

With a few exceptions, most battery chemistries require a BMS to support their day to day operation. All batteries can become damaged when abused, and a BMS helps prevent such damage. The term ‘abuse’ refers to the operation of the batteries outside of their nominal parameters.

What data does a BMS share with a PCs?

Also, the stack-level SoC data it communicates to the PCS includes information that enables the PCS to respond to individual cells at risk. A key device with which the BMS shares data is the power conversion system (PCS). The primary task of the PCS is to manage the charging and discharging of the battery.

How does nuvation energy's BMS work?

Nuvation Energy’s BMS achieves this by continually running a series of complex algorithms that generates an aggregate data set which includes information that enables the PCS to recognize the presence of cell-level risks and take actions to mitigate them.