LS Materials announced on May 29 that it has jointly developed Korea’s first hybrid energy storage system (H-ESS) specifically designed for electric vehicle (EV) charging stations, in collaboration with LS Cable & System. This innovative technology aims to address critical issues faced by EV charging infrastructure, including power overloads, fire hazards, and high installation costs.
This advanced H-ESS is seen as a next-generation solution capable of overcoming the limitations of traditional energy storage systems. Conventional ESS devices often generate excessive internal heat during repeated fast-charging and discharging cycles, leading to performance degradation and reduced lifespan. Such issues pose operational risks and increased costs, especially in high-demand environments like EV charging stations.
To tackle these challenges, LS Materials has developed a hybrid structure that combines high-speed, optimized capacitors with highly reliable lithium-ion batteries. The new H-ESS minimizes heat generation even under rapid power fluctuations, significantly reducing fire risk. It also offers five to ten times longer lifespan compared to existing ESS, enhancing operational efficiency. Additionally, its compact design reduces installation space and costs.
LS Materials plans to prioritize deployment of this technology at highway service areas, electric bus depots, and urban multi-use charging stations where quick and stable charging is essential.
This development was part of a government-funded project aimed at upgrading EV charging infrastructure, led by the Ministry of Trade, Industry and Energy. LS Materials handled the overall system design, while LS Cable & System contributed control and temperature monitoring technologies through cooperation.
Hong Young-ho, CEO of LS Materials, stated, “This H-ESS will significantly enhance the safety and efficiency of the EV charging environment.” He added, “We plan to expand its application to fields requiring rapid response, such as AI data centers and renewable energy systems, and are committed to advancing into North American and European markets.”
