Frequently Asked Questions

In the fire protection technology, we are conducting a number of research and development, such as the fire and explosion protection design applied in the mining industry, which will be applied to our battery pack design using a pipeline connected safety management method. When the power system detects abnormal heat or voltage abnormality of a battery pack, the pipeline communication control device will separately open the shunt solenoid valve of the battery pack and the flame retardant liquid in the fire extinguisher without disturbing other battery packs. The fire-fighting gas is separately delivered to the battery pack through the shunt pipe of the external pipe, preventing the thermal runaway from spreading to other battery packs, thereby avoiding system fire hazard.

For outdoor system there is no issue for NFPA855 compliance.
The NFPA855 compliance is relevant when there are indoor systems. The issue with the system capacity is it’s limited space – i.e. you can only have 600kWh installed together and to install another 600kWh needs to be 1m away. In these cases, need to contact the local facility to figure out the layout of the system. Not an issue of NFPA compliance when our system has passed the certification.

There will be smoke sensor within the container and temperature sensors within the battery packs and container to check on fire issue. We are also looking at a new technology-based sensor, which could prevent the fire from happening based on detecting and controlling of hydrogen before the cell catches fire in advance.
Remote monitoring system will let the owner receive info about whether system’s caught fire remotely through the fire suppression sensor and temperature sensor. System alarm will also record them. On local control side it will mostly rely on the fire suppression system itself, which will be turned on if anything is detected. We can also add the control logic on if the temperature within battery is too high, then turn on the fire suppression system – the issue will be that the communication won’t be faster than the communication within the fire suppression system itself. Only the temperature sensor is not really a reliable way to define whether there is fire.

Yes, our BMS is built in and certified together with battery packs and modules.

We can set the up-limit of the charge level through our proprietary BMS.

During the production, the battery mostly are charged and discharged 8 – 15 cycles based on the battery quality and system consistency.

Our outdoor cabinets meet the requirements of NEMA 3R, which includes the IP55 water proof testing, anti-corrosion testing, and more.

No. BESS by itself doesn’t emit any carbon emission, even in case of a fire situation we could choose NOVEC 1230 type of fire extinguisher, which uses enviromentally friendly extinguishing fluid. Beyond, it will help reduce GHG emission if used with other renewable sources.

Our Battery Management System has passed UL certification and based on the test results the function reliability of our management system is acceptable. For our battery side, we’ve done long-term charging/discharging tests to make sure the performance is up to standards.