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Our highly innovative energy storage systems (ESS) make solar Power users independent of energy prices and able to use solar energy they collect at the time they need it. Our intelligent, modular lithium-ion energy storage units save the photovoltaic energy you collect so it is at your disposal during night time or when there is low solar radiation. While the sun is shining an inverter allows you to choose between charging up your storage unit or enables your solar power to be fed into the power grid.

YOUR BENEFITS AT A GLANCE:

  • Optimal self-consumption during day & night
  • Independence from solar radiation and public grid
  • Economic, cost-cutting and eco-friendly
  • Lightweight, safe and space saving
  • Modular installation: the storage capacity can be adapted to your needs

bmz

ESS 7.0 / 9.0 / X The modular energy storage system

Is a new modular lithium-ion energy storage which stores the generated surplus energy into battery modules for later use. The inverter can then feed this power into the network or energy storage.

The power is available whenever it is needed: in the evening, at night and at times when there is little or no sunshine. With the ESS 7.0 / 9.0 / X storage system, solar energy users become less dependent on electricity prices and can use their own eco-power whenever they need it.

Cluster solutions

The design of the system is based on a modular principle: Depending on
the desired storage capacity, the battery modules can be adapted to the
needs of the user. For the recommended configuration of the storage
system, please refer to the product brochure.

Features

  • Innovative lithium-ion battery technology
  • The service life of up to 20 years
  • Cycle stability at high currents
  • Partial cyclisation possible – no memory effect
  • Quick charging capability: fully charged in one hour
  • Efficient operation through active temperature control
  • Safety-tested technology in accordance with the latest standards
  • Integrated multi-level security concept
  • Deep discharge protection, overcharge protection
  • Voltage and temperature monitoring
  • Charge balancing between cells (passive balancing)
  • Determination of the state of charge and state of health (SOC and SOH)
  • UN test 38.3
  • European Conformity (CE)
  • Compatible with SMA, Sunny Island 3.0/4.4/6.0/8.0 Victron.
  • Supports multi-cluster functionality (scalable up to 12 modules in parallel)

BMZ ESS 7.0 / 9.0

GENERAL PROPERTIES ESS 7.0

Energy (nom./usable) 6.74 kWh/5.39 kWh                                                          
Nominal voltage of 55.5 V
Charge end voltage 61.5 V
Discharge end voltage 45.0 V
Capacity (nom./usable) 121.5 Ah/ 97.2 Ah
Max. charge 90 A
Max. discharge current 300 A ( 3 sec.)
Max. discharge power 18 kW*
Weight 95 kg
Dimensions (mm) W x H x D 638 x 421 x 487 mm
Communication CAN – SMA ready
Battery chemistry Li-Ion NMC
Discharge depth 80% DOD
Full cycles 5,000

Battery Management System
Monitoring of cell voltage, cell temperature, current, derating and passive balancing

GENERAL PROPERTIES ESS 9.0

Energy (nom./usable) 8.5 kWh/6.8 kWh
Nominal voltage 54.0 V
Charge end voltage 61.5 V
Discharge end voltage 45.0 V
Capacity (nom./usable) 156.6 Ah/125.3 Ah
Max. charge 90 A
Max. discharge current 300 A ( 3 sec.)
Max. discharge power 18 kW*
Weight 97 kg
Dimensions (mm) W x H x D 638 x 421 x 487 mm
Communication CAN – SMA ready
Battery chemistry Li-Ion NMC
Discharge depth 80% DOD
Full cycles 5,000
Battery Management System
Monitoring of cell voltage, cell temperature, current, derating and passive balancing

OUR DEVICES ARE UN CERTIFIED FOR SOUNDNESS AND SAFETY
FEATURES

  • Discharge temperature (cells): 2 °C to +45 °C
  • Charge temperature (cells): 2 °C to +45 °C
  • Recommended storage temperature: 10 °C to 25 °C
  • Self-discharge (cells): ca. 2 % per year
  • Max. parallel connection (of batteries):
  • 12 (additional hardware required)
  • Future proof solution
  • Robust and compact design
  • Intelligent Battery
  • Management System
  • High operational safety

MULTI-LEVEL-SAFETY CONCEPT

Short circuit proof relay and 2nd protection (pyro fuse) for a redundant battery cut-off
Overvoltage and low voltage monitoring for each cell string with a redundant battery cut-off
Temperature monitoring for each cell string and current interrupt device (CID) in each cell
Protection against a reboot after deep discharge or any other serious error
No insecure parallel connection of cells without current interrupt device (CID) in each cell
Active current control as a function of cell voltage and temperature (derating)
Double metal housing

 

 

 

 

 

 

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