|Johnson Controls’ 12-V Lithium Titanate battery will power advanced start-stop vehicles. Click to enlarge.|
At the upcoming Detroit Auto Show, Johnson Controls will unveil a new 12V Lithium Titanate battery developed in collaboration with Toshiba for advanced start-stop applications. Toshiba is supplying its SCiB cells (earlier post) to Johnson Controls for the application.
The SCiB Lithium Titanate chemistry is effective at quickly recharging, works well in a wide range of temperatures and can be easily integrated into a vehicle’s 12-volt electrical system. Further, SCiB cells feature long life of more than 10,000 charge-discharge cycles. Toshiba, with SCiB, is the established market leader for Lithium Titanate systems.
SCiB also has a structure that assures an extremely low incidence of internal short circuits, according to Toshiba. A high level of safety in preventing thermal runaway is assured even if an internal short circuit is forced.
Johnson Controls is pursuing opportunities to develop evolutionary low-voltage energy storage systems that will help our 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.—Lisa Bahash, group vice president and general manager Original Equipment, Johnson Controls Power Solutions
Toshiba is pleased to work with Johnson Controls to supply SCiB cells for this application. The opportunity to support global automakers with their goal of improving vehicle efficiency is an important part of our strategy and vision.—Shun Egusa, general manager of Toshiba’s automotive business
Such an advanced start-stop system has two batteries. A 12-volt Absorbent Glass Mat (AGM) or Enhanced Flooded Battery (EFB), which will start the engine and supply power to accessories such as lights, navigation systems and radios. The 12-volt Lithium Titanate battery will primarily accept and store regenerative braking energy during vehicle deceleration, enabling greater power and load management capabilities.
With an Advanced Start-Stop system, drivers could save up to 8 percent every time they fill up their gas tank as the batteries enable the engine to shut off more frequently and for longer periods of time. This is also a great solution for our customers because the technology allows for greater fuel savings without major changes to the existing powertrain and electrical systems.—Lisa Bahash
The 12-volt battery systems will be produced starting in 2018.