A safety protection system for preventing lithium cell thermal runaway

The utility model relates to a safety protection system for preventing lithium cell thermal runaway. Including battery box and upper cover, the inside of battery box is provided with battery module, high pressure tank, oxygen concentration monitor and BMS to be connected from the machine with BMS respectively from machine, oxygen concentration monitor and high pressure tank, and the battery modulelinks to each other with high pressure tank, be equipped with on the battery box with the air inlet and the gas outlet of battery box internal portion intercommunication, the air inlet is located allto be equipped with matched with end cap with it with the gas outlet, the external side of battery box is equipped with high -voltage connector and low pressure connector. According to the above technical scheme, the utility model discloses a set up oxygen concentration monitor in the inside of battery box, when the oxygen of monitoring the internal portion of battery box was attempted exceedingstandard, BMS reported to t