How the technology of the SoNick battery functions

Every battery is made up of single cells connected in series and in parallel. During charging, the salt (NaCl) and nickel (Ni) are transformed into nickel chloride (NiCl2) at the cathode and sodium (Na) in the anodic section. Discharge occurs by means of an opposite reaction, with the sodium reacting to the nickel chloride at the positive electrode. All the cells, which have metal containers, have electrodes separated by a ceramic barrier that is permeable to sodium ions. Due to this characteristic the chemical reaction can occur only if electronic current passes through an outside circuit; hence there are no parallel reactions. This ensures 100% coulometric efficiency. A metal-ceramic seal hermetically closes the cell. No maintenance is needed for the entire life of the battery. The open circuit voltage (OCV) of the cells is 2.58V per cell and remains constant for most of the discharge profile.

Environment

• Zero ambient emission: can be installed in a sealed environment
• Battery outside temperature only few degrees above the ambient temperature
• Effi cient material usage and 100% recyclable: stainless steel, nickel, iron, salt, ceramic
• Free of toxic materials: no lead or cadmium
• RoHs compliant

Sodium Nickel Chloride Technology

• Use of sodium and nickel as active materials, with solid ceramic electrolyte
• Active materials contained in sealed steel sheet cells
• “hot battery” - internal operating temperature around 300° C
• Made with 2,58 Volt cells with 140 Wh/kg and 280 Wh/liter specific density
• Proven technology for energy storage and clean powering of electric vehicles

Specifications

Technical features

• Steel cell case and double stainless steel battery case
• Integrated battery monitoring system (BMS) for monitoring, diagnostics and data logging
• User interface on front panel
• Ready for remote diagnostics and monitoring
• Compatible with any DC power supply and standard telecom rectifiers
• Scalable with parallel operation
• No memory effect
• Typical failure mode (internal short) does not develop violent energy release - batteries remain in operation with slight loss of performance
• BMS diagnostics alert on anomalies and disconnect the battery in case of serious failure
• Supplementary protection with an independent circuitry in the event of BMS failure
• Integrated low voltage disconnect (LVD)

Download Datasheet here