Energy storage container test system

1. Objective Lithium-ion battery (LIB) energy storage systems (ESS) are an essential component of a sustainable and resilient modern electrical grid. ESS allow for power stability during increasing strain on the grid and a global push toward an increased reliance on intermittent renewable energy sources.

Each test included a mocked-up initiating ESS unit rack and two target ESS unit racks installed within a standard size 6.06 m (20 ft) International Organization for Standardization (ISO) container. All tests were conducted with an identical LIB configuration.

ISO container The simulated ESS was constructed in a standard 6.06 m (20 ft) International Organization for Standardization (ISO) shipping container. The standard exterior dimensions of such a shipping container are 2.43 m (8 ft) wide, 2.59 m (8.5 ft) high, and 6.06 m (20 ft) long.

Various laboratory- and industrial-grade sensors were used to characterize the gas composition throughout container. A National Instruments SCXI-1001 chassis, SCXI-1600 DAQ controller, SCXI-1102 voltage input multiplexer, and a SCXI-TC2095 thermocouple input module were used to collect the data from the listed sensors.

The test facility has a floor area of 36 m by 36 m (118 ft x 118 ft) with a 14.6 m (48 ft) ceiling. The exhaust system operated with a volumetric flow rate of 420 m 3 /min (14800 cfm).

A combination of analytical instruments and common industrial gas detectors were used to characterize the gas composition inside the container. Gas samples near the ceiling and floor were extracted from the container and transported by heated lines to analytical instruments.