Light weight engine start battery based on Thin Metal Film (TMF) technology

Abstract

Automobile engine starting requires extremely high current, in the range of 600 Amps peak for 250 mS, then a 150 A to 300A sine wave at a reasonably stable voltage for 0.5 to 3 seconds. Stater efficiency increases with higher deliverable voltage. Batteries required for these applications should be capable of operation at temperatures ranging from -208 C to 508 C. Today, most automobiles are equipped with 40 to 60 pound lead acid batteries for engine starting. However. at unscheduled intervals, batteries fail due to battery life, neglect, or negligence (failure to switch off headlights, radio, compact disc players, etc.) These situatioas can place the operator of an automobile in a difficult situation, usually requiring assistance; another vehicle for ajumpstart, or a towing service provider. The practice of keeping an extra battery in most of these vehicles has been virtually nonexistent due to previously available battery size and weight.BQLBHZ Technologies Corporation (BOLDER) has developed a light weight emergency starting unit of less than 5 pounds based on heir patented TMF technology which is capable of starting many automotive engines. Currently marketed as SecureStartTM, available in Sears and Neiman Marcus stores, is capable of starting cars, small trucks, motorcycles, motorboats, generators, snowmobiles, and aircraft.The purpose of this paper is to present current, voltage and power delivery characteristics of a 12 V TMF battery. Also included are the repetitive putse-power characteristics at 600 and IOOOA, and a battery design developed by ATP using BOLDER TMF celIs.