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Graphite/NMC industrial storage

The Graphite Rack is a storage rack for large scale energy storage applications based on Leclanché high energy Lithium Graphite/NMC cells. The main benefit of this rack is that it can be used for 8000 charge/discharge cycles at 80% Depth of Discharge. The racks can be charged at a high rate of 1C (300A) and discharge at 2.3C to provide a high flow of energy when required.

Graphite Racks are used to build large storage systems in containers or in buildings.
Each Graphite Rack includes:

  • 10 Lithium Graphite/NMC modules
  • One Rack controller to monitor and manage the rack
  • Switch unit to connect/disconnect the rack in the large system

This product has been developed to address a number of applications where a lot of power is required like:

  • Grid stabilization in on-grid applications
  • Shifting renewable energy to off load at a later moment (e.g. at night)
  • Managing the integration of renewable energy (solar and wind) into off grid applications with diesel generators (e.g. mining),
  • Providing backup power for extended time.

Main Features

  • 96 kWh storage capacity
  • Long cycle life of 8000 cycles at 80% Depth of Discharge
  • Rapid charging at 1C and discharging at 2.3C
  • Modular setup – start small and grow when needed



Technical specifications  
Rack specifications  
Format 19" double rack
Battery modules in series 10
Nominal voltage: 730 V DC
Battery voltage 600 V DC – 840 V DC
Operating current (1C / 1C) 129 A
Maximum string current 300 A
System capacity 96 kWh (C/5)
Cycles 8 000 cycles at 80% DoD
4 500 cycles at 100% DoD
Dimensions (HxWxD) 2300 x 1200 x 600 mm
Weight 1.300 kg
Temperature range 10°C up to 30°C
   
Module specifications  
Cells Leclanché 946A01 Graphite/NMC
Architecture 60 cells; 3 parallel 20 serial
Nominal capacity 9 600 Wh (C/5)
Nominal voltage 73 V DC
Voltage range 60,0 V DC – 84.0 V DC
Nominal charge current(1C) 129 A (1C)
Max. charge current 258 A (2C)
(reduction of lifetime to be expected)
Nominal discharge current(1C) 129 A (1C)
Max. discharge current 300 A (2,3C)
  (reduction of lifetime to be expected)
Max current 300 A
Cycles 8 000 cycles at 80% DoD
4 500 cycles at 100% DoD
Temperatures +0⁰C up to +30⁰C
Humidity < 95 % (non-condensing)
Dimensions (WxHxD) 463 x 356x 550 mm