Connect external power and communication ports with a flexible arrangement; flexible layout can be multi-layered with frames. Collected the single cell voltage and evaluated the state of the battery system to protect it from over-charge and over-discharge. In case of over-heating, we adapted two temperature sensors to monitor the whole battery system in real time, if the battery temperature excessed the setting value, the BMS will send message to cut down the main relay or decrease the output power to
protect the battery.