A lithium-ion battery cell is preconditioned using an initial, one-time process of cell formation at an elevated temperature, or after cell formation, charge/discharge cycling for a predetermined number of cycles within a specified period of time at an elevated temperature prior to being placed in service. The process may be performed as part of manufacturing during cell formation after electrolyte filling and pre-charging. Alternatively, the pre-conditioning process may be performed after assembly of finished cells within a multi-cell battery, either before or after installation of the battery in a product, but before the battery is subjected to harsh conditions, such as fast charging and/or discharging at low temperature. An electrified vehicle may include an electric machine powered by a multi-cell lithium-ion battery preconditioned according to the initial, one-time process.
BATTERY PRECONDITIONING UNDER ELEVATED TEMPERATURES
2024-02-29
Patent
Electronic Resource
English
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |