JCI shows off advanced battery technology for electric driving

Johnson Controls, one of the world's leading suppliers of automotive interior systems, electronics and batteries, is presenting its re3 concept car at the 2009 IAA (Frankfurt Motor Show) in Frankfurt, Germany, and demonstrating how electric driving saves fuel, without compromising space. The novel packaging of the lithium-ion battery system of one of the world market leaders of starter batteries allows room for five people in this concept car, as well as generous storage space in the trunk.

With its re3 concept car, Johnson Controls is showcasing its innovative battery technology and novel packaging idea for storing energy. Ninety-six lithium-ion cells are uniquely packaged between the front seats in the tunnel console of the vehicle. With more than 7 kilowatt-hours (kWh), the storage module provides sufficient energy to easily transport commuters to and from work or allow families to take an extended shopping trip – without using a single drop of gasoline.

Active cooling of the cells ensures optimal operating conditions. The cross-system energy management of the re3 ensures even charging and discharging of the lithium-ion accumulators (cell balancing), a key requisite for maximum energy efficiency and the long-term reliability of the storage cells.

Trendsetting packaging concept
Electro-mobility is on the agenda of many nations. Lithium-ion batteries are at the heart of these vehicles and thus of elementary importance for electro-mobility acceptance.

However, the huge energy stores often prove to be tricky for many electric and hybrid vehicles. The feasible energy density, in other words, the ratio of size to capability of an accumulator, forces car designers into making compromises - often at the expense of storage space. The trunk is therefore often used for purposes other than intended or the entire rear seat bench must give way to battery technology.

The designers at Johnson Controls managed to optimally place the energy store in the tunnel console of the re3, making the concept car a true space-saving sensation. The attractive interior design allows ample room for five adults; three of which can sit comfortably in the rear of the vehicle. In addition, the re3 also offers adequate trunk space. But not only is the space of the re3 impressive. The placement of the battery also has a positive impact on driving characteristics. The driver benefits from a low center of gravity, facilitated by installation of the storage modules in the center of the vehicle, which enhances ride and handling characteristics.

About Johnson Controls-Saft
Johnson Controls-Saft is a joint venture that has brought together Johnson Controls – the world's leading supplier of automotive batteries and a company deeply experienced in integrated automotive systems solutions – with Saft, an advanced energy storage solutions provider with extensive Li-ion battery expertise.

About Johnson Controls
By integrating technologies, products and services, Johnson Controls creates smart environments that redefine the relationships between people and their surroundings. Its team of 140,000 employees create a more comfortable, safe and sustainable world through products and services for more than 200 million vehicles, 12 million homes and one million commercial buildings.

About Saft
Saft is a world specialist in the design and manufacture of high-tech batteries for industry. Saft batteries are used in high performance applications, such as industrial infrastructure and processes, transportation, space and defense. Saft is the world's leading manufacturer of nickel-cadmium batteries for industrial applications and of primary lithium batteries for a wide range of end markets. The group is also the European leader for specialised advanced technologies for the defense and space industries. With approximately 4,000 employees worldwide, Saft is present in 18 countries. Its 15 manufacturing sites and extensive sales network enable the group to serve its customers worldwide.