The 12th Energy Storage International Summit and Exhibition (ESIE 2024), hosted by the Zhongguancun Energy Storage Industry Technology Alliance, China Energy Research Association, and Institute of Engineering Thermophysics, Chinese Academy of Sciences, is still in full swing at the Beijing Shougang Convention and Exhibition Center. In response to the trend of large capacity in the energy storage market, REPT BATTERO officially announced its entry into the 6.9MWh energy storage system era at the "Energy Storage Efficiency Improvement, Asking for the Future" energy storage system conference. During the same period, two star products, the Wending 345Ah energy storage battery cell and the newly upgraded energy storage battery compartment, made their grand debut at ESIE 2024.

On the morning of April 12, REPT BATTERO officially released the 6.9MWh energy storage battery cabin. Wei Jie, product manager of REPT BATTERO’s energy storage division, reviewed the 6.9MWh energy storage battery cabin in terms of product performance, highlight features, and differentiated upgrades. introduced in detail.

The battery compartment still uses a standard 20-foot container with a single-side door opening, which supports the combination of four machines and the shipping of the entire machine. Wei Jie introduced that REPT BATTERO’s 6.9MWh energy storage battery cabin has achieved differentiated advantages mainly in three aspects: safety protection, intelligence and efficiency, and durability.

In terms of safety, the 6.9MWh energy storage battery cabin fully decomposes the electrical nodes of the product, and gradually sets up disconnection protection mechanisms and strategies for potential short-circuit risk areas of the system. It improves hard resistance through "three intervals and one row" passive suppression, and uses "five "Heavy" detection, multi-dimensional monitoring, and early thermal runaway signal identification realize active suppression at the module level, and the fire protection system configuration realizes active suppression at the cabin level.

The 6.9MWh energy storage battery cabin also uses intelligent cloud to minimize accidents, reduce costs, and maximize benefits. The battery compartment can predict and correct SOC at different temperatures based on operating status prediction and fault determination, use a variety of methods to obtain real-time and accurate SOH, and predict the shunt ratio in real time to prevent overcurrent.

In terms of durability, the new generation of products has been upgraded from the inside out from the battery cell to the group level. At the cell level, attenuation suppression technology and active lithium repair technology are introduced, so that the battery can show a "zero" attenuation effect after 1800 cycles; at the group level, full life cycle preload adaptation optimization design, temperature balance control, and efficient active balancing are applied at the group level. This method maximizes the long life of the battery core.

At the meeting, Wei Jie also demonstrated the mass production results of REPT BATTERO's 5.5MWh energy storage battery cabin. The battery cabin was the first to achieve mass production and batch delivery in February this year. Compared with the 5.0MWh container, it has reduced costs and increased efficiency. Going to the next city, it saves 9.1% in transportation costs, 5% in debugging costs, 10% in floor space, and 9.5% in firmware costs. The newly released 6.9MWh battery compartment has been upgraded again, using a new medium-voltage platform and achieving zero attenuation for 5 years, further providing customers with an all-round energy storage system product that has three major advantages: economic benefits, safety performance, and cycle life.