Battery-maker Kokam’s new XPAND battery pack is aimed at heavy vehicles such as electric buses, trams, trucks and other commercial and industrial EVs.
The XPAND battery pack will be offered in two versions: the 7.1 kWh XMP71P and the 11.4 kWh XMP114E. Both are scalable to support EV applications from 7.1 kWh to 1.5 MWh of capacity, in a wide variety of voltages. Energy density is up to 150 Wh/kg.
Kokam promises that the new battery pack will meet or exceed practically all existing safety standards. The battery cells’ ceramic separator and other battery pack thermal containment technologies prevent thermal runaway propagation. The battery pack has secured an IP67 rating, certifying that it is fully protected from dust and can be submerged in one meter of water for up to 30 minutes.
The XPAND’s liquid cooling system offers direct cooling to the battery cells’ face, maximizing volumetric efficiency by reducing the mass of the system by up to 75 percent compared to air-cooled systems.
Kokam claims the XMP71P’s 40 Ah lithium NMC oxide cells will last for over 6,000 cycles. XPAND’s modular design, with all external connections on the front panel, is designed to make it easy to engineer the pack into a wide variety of EV applications and service in in the field. XPAND’s BMS features diagnostics, battery state estimate and a flexible system architecture designed to provide accurate State of Charge (SOC) and State of Health (SOH) data. The system has been tested to meet the strict electromagnetic compatibility (EMC) requirements of international marine and transportation customers in North America, Europe, and Asia.