Global automotive supplier DENSO Corporation has developed a lithium-ion battery pack that further increases the fuel efficiency of vehicles equipped with stop/start systems. The new battery pack allows the stop/start system to use more regenerative power than current conventional systems that use a single lead-acid battery. DENSO’s battery pack consists of a battery management unit and power supply control switch, as well as battery cells that are provided by a third-party source.
|Cutaway model of Lithium-ion battery pack. Click to enlarge.|
The new battery pack is air-cooled and therefore does not require a dedicated battery cooling system. Because there is no need for auxiliary cooling components, this allows the battery to be lighter and more compact. This enables automakers more design flexibility, which is important for vehicles with limited space, DENSO notes.
The pack weighs 2.5 kg and is 200 × 178 × 70 mm (length × width × height).
DENSO has developed different types of starters to meet the specific needs of its customers for their stop/start systems, including the Advanced Engagement (AE) Starter; Permanently Engaged (PE) Starter; and Tandem Solenoid (TS) Starter. Also, DENSO developed a Cold Storage (CS) Evaporator which increases the effectiveness of idle-stop, particularly at high temperatures.