Applications of High Voltage Batteries
It is Widely used in commercial buildings, industrial fields and power grid side.
High-voltage system BMS
What are they?
High-voltage battery management systems or BMS are an integral part of any battery system. They control how the battery functions and how well they perform under various conditions.
Why do we need them?
High-voltage batteries have complex chemistries which need to be monitored and maintained. This is critical that these battery systems stay within certain limits, to ensure they are not damaged or destroyed. In addition a good BMS will extend the life of you batteries by reducing oxidation and plate damage. In the long run they will always prove value for money.
How do they work?
BMS measure a range of parameters, namely voltage, current, temperature and sometimes specific gravity. They use various probes, meters and sensors to detect the conditions affecting the battery. These can include high ambient temperature, excessive current draw and over voltage. These measurements are further recorded and computed to determine state of charge and battery health providing further insight into the batteries performance.
HIGH-VOLTAGE BMS FEATURES
OSM’s High-Voltage BMS provides cell- and stack-level control for battery stacks up to 380 VDC. One Stack Switchgear unit manages each stack and connects it to the DC bus of the energy storage system. Cell Interface modules in each stack connect directly to battery cells to measure cell voltages and temperatures and provide cell balancing.
For parallel stack aggregation, an additional Energy can be included in the ESS. The acts as a central control hub that combines all the Stack Switchgear units and enables the stacks to be managed as a unified battery system.
Connects and disconnects a battery stack to the DC Bus of the ESS in response to requests from system controllers. Will also report the resulting capacity change to the PCS and other energy management systems.
Will alter current limits to protect the battery from overcharge and over-discharge as well as to reduce battery temperature and to prevent over-voltage.
Utilizes a pre-charge circuit when connecting the stack to the DC bus, to prevent current surges and voltage mismatches that could damage cells.
Disconnects batteries from the power path if safety thresholds are exceeded during ESS operation.
Includes short-circuit protection.