![]() MHEVs use an electric motor to support the ICE during acceleration and when the vehicle is cruising. Mild hybrid electric vehicle (MHEV) architectures use the internal combustion engine (ICE) with a 48V electric system, or powertrain, to augment the engine and components in converting the engine’s power into movement. As a result, adding 48V battery banks to an existing 12V system for energy storage is now feasible and cost-effective. ![]() They are now becoming mainstream in 48Vdc electrical systems which need larger energy storage and faster charging times.Ĭharge times of the Li-ion batteries are also much shorter than those of lead-acid batteries. The combination of the benefits of Lithium-ion batteries and SELV requirements found in bi-directional DC-DC converters has led to them being specified more frequently. Lithium-ion batteries also weigh up to 75% less than their lead-acid counterparts and can be stored in any position, making integration more flexible. They are also able to handle more charge cycles than lead-acid batteries, allowing more cycles per unit and are capable of fast charging, up to 100% in 30 minutes. ![]() They also significantly increase the driving range of a vehicle, with a Lithium-ion batteries typically having capacity of 150 to 250 Wh/kg, compared with 30 to 70 Wh/kg for a lead-acid battery. A Lithium-ion battery is more efficient and can last up to 10 times longer than a lead-acid battery. Increased electrification of vehicles is also driving demand for 48V systems.
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