Lithium-ion battery manufacturer Samsung SDI has claimed an industry first, passing UL9540A test certification for the safe installation of stationary energy storage systems (ESS), with particular regard to the fire risk posed by thermal runaway. Contact online >>
Lithium-ion battery manufacturer Samsung SDI has claimed an industry first, passing UL9540A test certification for the safe installation of stationary energy storage systems (ESS), with particular regard to the fire risk posed by thermal runaway.
The South Korean company is supplier to many system integrators in the energy storage industry, as well as contributing to the manufacture of complete systems for commercial and utility use in a joint venture (JV) with inverter maker Sungrow.
UL published UL 9540A, Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems in 2018, “to help manufacturers have a means of proving compliance,” to new regulations. These include standards introduced by the US National Fire Protection Association (NFPA), as well as changes to the International Fire Code currently in place (2018 IFC). Information on the UL test and methodology can be found here.
For instance, meeting the terms of UL9540A can allow ESS racks to be installed in closer proximity to one another than the NFPA’s code 855 states, with UL9540A acting as assurance of safety. Meeting the test criteria also means battery racks “can be installed without needing to add separate fire-fighting system(s),” Samsung SDI said in a release sent today to Energy-Storage.news.
UL9540A testing is applied to rack-level safety with an optional battery system safety test. Samsung SDI is the first to meet the rack-level requirements. Samsung SDI said it attained the certification “for its capability of preventing large scale fire in the ESS by applying proprietary designs for safety of cells, modules and racks to prevent battery thermal runaway propagation”.
As reported by Energy-Storage.news over the past few months, investigations into a couple of dozenlithium-ion battery storage system fires across South Korea in 2018 showed that rather than defective battery cells, poor installation, monitoring or management of battery systems was to blame in every case. DNV GL said of its own detailed investigation into one such fire that minor issues should not be allowed to become major fires, as had been the case in that instance.
According to the reports, Samsung SDI and GM were in the final stages of negotiations and expected to sign a memorandum of understanding for the JV in Michigan this week.
General Motors already has a battery deal with LG Energy Solution (LGES) called Ultium Cells which has an EV battery plant operating in Ohio and two more under construction in Tennessee and Michigan. Combined they will have a production capacity of 145 GWh a year when complete.
According to reports, GM wanted the joint venture to build an additional plant but LGES declined to participate. LGES is also building a battery plant in the US with Honda.
SK On Company is building significant new capacity in the country both with wholly owned plants and through joint ventures with Ford and Hyundai, for total capacity of 150 GWh per year by 2026.
Samsung SDI announced recently it had been awarded EUR90m in subsidies from the European Union for its first EV battery plant in Hungary. The plant was completed in 2019 following investments of EUR1.2bn.
The facility, located in the southern city of Pohang, was scheduled to begin mass production of cathodes, which regulate the capacity and voltage of lithium-ion batteries, in the first half of 2022.
Samsung SDI owns a 60% stake in the joint venture, while EcoPro BM holds the remaining 40% of the equity. The 49,000 sq m factory had an annual production capacity of 36,000 tons of high nickel cathodes, enough for 400,000 EV batteries.
Samsung SDI Company also said recently it would build its first electric vehicle (EV) battery plant in the US in a joint venture with Netherlands-based automaker Stellantis.
It joins rival South Korean battery makers LG Energy Solution and SK On in establishing major battery manufacturing deals in the US with local automakers GM and Ford respectively.
Samsung SDI said the plant would have an initial production capacity of 23 gigawatt-hours (GWh) of batteries per year with production set to begin in the first half of 2025.
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