In order to curb the negative consequences of climate change, politicians have been calling for a reduction in carbon dioxide emissions for some time now. This also affects the automotive industry, which is relying on technological innovations to reduce emissions of gases that are harmful to the climate. Battery manufacturer moll, based in bad staffelstein, germany, is providing a building block for this with a car battery that was developed to meet the new requirements of the automotive industry. This EFB (enhanced flooded battery) is specially designed for use in vehicles with automatic start-stop systems.
"In the past, car batteries were basically pure starter batteries", explains rainer wagner, who as technical director oversaw the three-year development of the new battery. The main task of the battery was to provide a cold start for the vehicle. However, with increasing electronics on board, especially since the 1990s, it has become more and more important that the car battery can survive many landing and discharging cycles.
"Cold-starting ability and cycle life are actually opposed to each other," says wagner, rainer wagner explains the basic problem in the development of the battery. With the push for micro-hybrid vehicles, which have automatic start-stop systems and regenerative braking, the demands on the car battery have increased even more. When a car with an automatic start-stop system stops, the engine switches off. "The engine speed is then at zero, and the battery has to supply the entire vehicle with power", says rainer wagner. This leads to a greater discharge of the battery.