Patent ID: 7227336

Claim:
A method for rapid charging of a lithium ion battery at a particular temperature, said battery with a negative and a positive electrode and said battery including a solvent system and an electrolyte, comprising: a) measuring the diffusion coefficient of said battery at a series of battery temperatures prior to charging, applying a constant current charge to the lithium ion battery until a sum of a lithium ion battery voltage, said sum defined as an intrinsic free energy difference value as measured between said negative electrode and said positive electrode, and a concentration polarization value, reaches a first predetermined value; then upon reaching said predetermined value b) applying a pulsed current charge to the lithium ion battery with a calculated frequency and a calculated duty cycle, said pulsed charge having a value dependent on a chemical diffusion coefficient of said battery, the chemical diffusion coefficient continually adjusted depending on actual battery temperature measured, with said chemical diffusion coefficient previously measured at a series of battery temperatures applied to the battery prior to charging; then c) reducing the pulsed current charge value when a sum of a lithium ion battery voltage, said sum defined as an intrinsic free energy difference value as measured between said negative electrode and said positive electrode, and a concentration polarization value, reaches a third predetermined value.