Recent significant innovations within lithium ion batteries have propelled the technology into a position in the marketplace far exceeding recent market survey results. Breakthroughs in new battery chemistries, novel electrode and electrolyte materials, system integration for high-energy/high-power automotive batteries show the need of a real safe battery technology.
Fire and explosion of lithium ion batteries have been reported from cell phone, laptop computer to electric vehicle. All these incidents are related to the rapid release of huge chemical energy stored in lithium ion batteries which is initiated by heat. Many laboratory tests, such as nail penetration, crashing, overcharging, and shorting, have shown that in most cases the heat is self-generated by the internal or external electric circuit shorting. What causes fire and explosion in a lithium ion battery, which current efforts are necessary to reach a higher battery safety? What proposes a more effective and feasible approach for the safety of high voltage battery systems?