The present invention discloses an electrochemical energy storage system early warning method, safety control method, device and equipment, the method comprising: collecting the cell temperature and cell voltage of each cell to be tested; obtaining multiple characteristic quantities of each cell to be tested according to the cell temperature and cell voltage; and combining and judging the multiple characteristic quantities based on the thermal runaway boundary conditions to obtain early warning information, which is used to indicate the thermal runaway state of the electrochemical energy storage system.
[pdf] 