LITHIUM-ION BATTERY IMPENDING FAILURE DETECTION

• Main Authors: Javey, Ali, Fahad, Hossain Mohammad
• Format: Patent
• Language: English
• Published: 08.12.2022
• Subjects: ALARM SYSTEMS; BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; ORDER TELEGRAPHS; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SIGNALLING; SIGNALLING OR CALLING SYSTEMS; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

A battery management system configured to detect impending failure of a lithium-ion battery cell includes a sensor array microchip. The microchip includes a plurality of silicon chemical-sensitive field effect transistors (CS-FETs) configured to detect multiple distinct gases vented by the lithium-ion battery cell. The battery management system also includes a cell monitoring unit (CMU) configured to receive from at least one of the CS-FETs data indicative of a detected amount of gas vented by the lithium-ion battery cell. The CMU is also configured to compare the data indicative of the detected amount of the vented gas to a predetermined threshold amount of the subject vented gas programmed into the CMU. The CMU is further configured to trigger a signal indicative of impending failure of the lithium-ion battery cell when the detected amount of the vented gas exceeds the predetermined threshold amount of the subject vented gas.