Auto supplier rolls out next start-stop battery


A 12-volt lithium-titanate battery is part of a two-battery power system for advanced stop-start vehicles. Courtesy Johnson Controls

An auto supplier will unveil a new battery and power system for advanced start-stop vehicles during the North American International Auto Show.

Johnson Controls said yesterday that it will expand its automotive lithium-ion battery portfolio by introducing a lithium-titanate battery.

The lithium-titanate battery will be paired with a second battery from the company to create a battery system for advanced start-stop vehicles.

The company will showcase the battery system on Jan. 12 at the annual auto show in Detroit.

The 12-volt battery system will be produced starting in 2018.

Johnson Controls is evaluating Holland and Hannover, Germany as potential production sites. The decision will depend on where the technology will be first implemented, according to a company spokesperson.

Toshiba partnership

The lithium-titanate technology was developed in collaboration with Toshiba, which is considered the established market leader for lithium titanate, thanks to its rechargeable battery technology, known as SCiB.

“Toshiba is pleased to work with Johnson Controls to supply SCiB cells for this application,” said Shun Egusa, general manager of Toshiba’s automotive business. “The opportunity to support global automakers with their goal of improving vehicle efficiency is an important part of our strategy and vision.”

Advanced stop-start system

Johnson Control’s battery system for advanced start-stop vehicle includes two batteries: its 12-volt Absorbent Glass Mat or Enhanced Flooded Battery for start-stop vehicles, which will start the engine and supply power to accessories such as lights, navigation systems and radios; and the 12-volt lithium-titanate battery, which will primarily accept and store regenerative braking energy during vehicle deceleration, enabling greater power and load-management capabilities.

The lithium-titanate chemistry is effective at quickly recharging, works well in a wide range of temperatures and can be integrated into a vehicle’s 12-volt electrical system.

Fuel savings

Johnson Controls said its efforts to develop low-voltage energy-storage systems will help customers meet increasing fuel regulations at a lower cost than a hybrid or electric vehicle.

“In partnership with Toshiba, we are expanding our lithium-ion product offerings to support the needs of our global customers,” said Lisa Bahash, group VP and GM of Original Equipment, Johnson Controls Power Solutions. “The technology allows for greater fuel savings without major changes to the existing powertrain and electrical systems.”

An advanced start-stop system enables the engine to shut off more frequently and for longer periods of time, which could save drivers up to 8 percent every time they fill up their gas tank. 

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