JinkoSolar Launches SunGiga Liquid-Cooling ESS in Japan

Chinese solar manufacturer JinkoSolar has announced the launch of its new liquid cooling energy storage system called SunGiga for C&I application and showcased it in this year’s PV Japan Expo 2023.

JinkoSolar had launched the SunTank residential ESS in Japan in 2022.

JinkoSolar said that the liquid cooling system for more even heat dissipation and highly intelligent auto control system results in temperature difference between individual batteries within 2 degrees Celsius, thereby extending the lifetime of batteries which can increase capacity by 10%. This also helps in significantly improving the charging and discharging efficiency which can increase RTE by 2%.

Compared with the conventional air-cooling design as well as other liquid cooling solution which comes with a battery temperature difference within 3 degrees Celsius, SunGiga of JinkoSolar has intelligent frequency conversion control design. The multiple liquid cooling control modes lower consumption by 30%. Also. when compared with standard air cooling system, SunGiga has higher space utilization rate increased by 38%.

The modular and pre-assembled design makes installation and maintenance as well as future capacity augmentation extremely easy and fast. It is also compatible with 1000V and 1500V DC system, said JinkoSolar.

JinkoSolar mentioned that safety is the top principle of SunGiga’s design and engineering. It offers comprehensive multiple layers of safety protection from the cell, electrical, and system levels. Intelligent cell monitoring technology performs high-precision online computing of cell status and provides early-stage warnings to prevent thermal runaway. The automatic state of charge (SoC) calibration improve system reliability and reduce operating and maintenance (O&M) costs, maintains the firm.

JinkoSolar mentioned that JKE344K2HDLA C&I ESS cabinet has a maximum capacity of 344 kWh, with a liquid cooling unit, and 8 battery modules. It is designed for the mainstream C&I market– a portfolio with a battery capacity ranging from 500kWh to 2MWh and is available in two and four-hour applications.

The system combines lithium-ion batteries, switchgear, a fire protection system, and PCS. According to customer requirements, the total energy capacity of each battery cabinet can be tailored to achieve the best economics for a specific project.

JinkoSolar claims to be one of a few companies offering both highly efficient n-type TOPCon PV panels and ESS solutions. The firm’s solar-plus-storage comprehensive solution optimized for C&I markets claim to ensure lower power pricing and energy security.