© 2023 by XOLTA
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3 XOLTA BATTERY ENERGY STORAGE SYSTEM OVERVIEW:
3.1 Introduction
The XOLTA Outdoor BESS is a modular, cloud-connected multipurpose stationary energy storage system.
The BESS is designed for a wide range of ambient temperature conditions which makes it suitable for outdoor
installation without any additional enclosure. The system is designed for various operation modes (appli-
cations) which will be further described in Chapter 5.
The main features of the XOLTA Outdoor BESS are:
•
LIFT & DROP:
Simple installation and commissioning. The system requires only grid connection, internet
and electricity meter connections.
•
ALL IN ONE:
All components of the system are integrated into a single cabinet. This includes the battery
cells, the power conditioning system (PCS), the thermal management system (TMS), the battery manage-
ment system (BMS), the battery protection unit (BPU), the multi rack battery control system and the energy
management system.
•
OUTDOOR OPERATION CAPABILITY:
The mechanical casing of the system was designed to be effective
up to enclosure rating IP55 (dust and water jet ingress).
•
MODULARITY:
The storage system power and energy can be expanded and tailored to specific needs. In total,
up to 32 XOLTA battery racks can be connected and operated in parallel.
•
REDUNDANCY AND SYSTEM RESILIENCY:
The intelligent multirack battery management provides resiliency
to single or multiple rack failure. The multirack battery system can continue to operate with limited power in
case of single or multiple battery rack failure.
•
MULTIPURPOSE:
The system is designed for various applications, from the integration of renewable energy
(e.g. increasing renewable self-consumption) up to various grid support (e.g. frequency and voltage
support) and EV charging support applications.
•
XOLTA CLOUD CONNECTION:
The system is integrated with the XOLTA Cloud. It allows for system monitoring,
advanced control, data acquisition, and data storage.
•
SAFETY:
The system is designed to offer exceptionally high operational safety. For example, the system is
fitted with state-of-the-art battery systems, multi-layer and redundant protection systems and Lithium
Balance’s battery management system (BMS), which all ensure maximum system safety under various
operating conditions.
•
LOW TOTAL COST OF OWNERSHIP:
This is achieved by very high system round-trip efficiency, low standby
losses, minimal operational and maintenance (O&M) costs and intelligent energy management.
MODBUS
Serial communication protocol developed by Modicon
n-BMS
Battery Management System from Lithium Balance A/S
NTC
Negative Temperature Coefficient thermistor
PCS
Power Conditioning System
POR
Power on Reset
PV
Photovoltaic
RCD
Residual Current Device
SC
Site Controller
SoC
State-of-Charge
TCO
Total Cost of Ownership
TCP
Transmission Control Protocol
TMS
Thermal Management System
