VS - Electrical Systems From Stop-Start to Hybridization

26

New standards for new batteries Dynamic charge acceptance Ability of a battery to absorb current peaks at different state of charge levels after charging or discharging operation. Endurance Ability of a battery to deliver energy under high cyclic conditions in a partially discharged state of charge Classification of types As batteries for micro-cycle applications are specially designed it is important that any user can identify the appropriate battery for the application. A classification system has been defined, ranking battery performances in term of: ●● Water consumption level (W1 – W5) ●● Charge retention level (C1 – C2) ●● Vibration level (V1 – V4) ●● Micro-hybrid cycle performance level (M1 – M3)

New batteries require new standards, micro-hybrid battery specifications and test methods are detailed in the EN 50342-6 standard. Micro-hybrid batteries are submitted to:

●● More discharge cycles ●● More re-crank cycles ●● More recharge cycles

●● More operation at partial state of charge ●● More recharge at partial state of charge ●● More recharge at higher voltages

Micro-hybrid batteries are designed and tested for Micro cycling, Dynamic charge acceptance, and endurance Micro cycling Ability of a battery to provide the power to restart the engine after frequent stop phases, recovering state of charge and ageing effects due to shallow load pulses.

66