BATTERY MANAGEMENT SYSTEMS (BMS)
BMS — battery management system for energy storage
Country: · Model: BMS
A three-level BMS for energy storage systems that measures cell voltage with an error of up to 3 mV, with insulation rated for 1500 V and above, and a system voltage of up to 2500 V DC. It is installed in commercial cabinets of 261 and 418 kWh and in containers of 5 and 6.25 MWh.
- Levels
- cell, module, cluster
- Cell voltage measurement accuracy
- ≤3 mV
- Current accuracy
- ≤±0.2 % of reading
- SOC/SOE/SOH accuracy
- ≤±5 %
Technical specifications
| Levels | cell, module, cluster |
|---|---|
| Cell voltage measurement accuracy | ≤3 mV |
| Current accuracy | ≤±0.2 % of reading |
| SOC/SOE/SOH accuracy | ≤±5 % |
| Data bus | CAN FD |
| Insulation | 1500 V+, for systems up to 2500 V DC |
| Archive | 180 days |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Management is divided into three levels, so the cell, the module and the cluster are monitored separately. The controller measures cell voltage with an accuracy of up to 3 mV and current with an error of no more than ±0.2 % of reading, and estimates the battery state of charge, energy and health (SOC, SOE, SOH) with a deviation of up to ±5 %. Data travels between the levels over the CAN FD bus. Insulation of 1500 V and above leaves a margin for high-voltage clusters of lithium iron phosphate batteries, so the BMS is used in systems up to 2500 V DC. The event archive is stored for 180 days, which is enough to investigate a fault noticed several weeks later. Compatibility with GB, IEC and EN standards is declared.
How to choose
The main thing for selection is the class of system the BMS is needed for. This model is described for cabinets of 261 and 418 kWh and containers of 5 and 6.25 MWh, so it is excessive for smaller household batteries. If power also has to be distributed between a PV plant, a generator and the grid, an EMS is installed alongside, and for a microgrid with island mode an MCC is added.
Request a price and lead time
BMS — battery management system for energy storage. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How many levels does this BMS operate on?
Three. It keeps records separately for the cell, the module and the cluster, and builds the overall picture at the cluster level.
How accurately does the BMS measure cell voltage and current?
Cell voltage is measured with an error of no more than 3 mV, and current with ±0.2 % of reading or better. SOC, SOE and SOH are estimated with a deviation of up to ±5 %.
Up to what system voltage can this BMS be used?
The insulation is rated for 1500 V and above, and the storage system can operate up to 2500 V DC.
What interface does the BMS have and how long is the log stored?
Data is exchanged over CAN FD, and the event archive is stored for 180 days.
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