Estimation of SOC

The indication of state of charge of battery is best given by

• Specific gravity of electrolyte

• Temperature of electrolyte

• Colour of electrolyte

• Level of electrolyte

Defination of SOC of battery

• Ratio of current capacity to the normal capacity

• Ratio of normal capacity to current capacity

• None of above

• Both of above

Any battery will __ capacity during cycling

• Loss

• Improve

The relationship between OCV and SOC cannot be exactly

• Same for all batteries

• Different for all batteries

The object of hybrid models is to benefit from the __ of each method and obtain a globally optimal estimating performance

• Advantages

• Disadvantages

Mathematical method of direct measurement of SOC are

• Open circuit voltage method

• Terminal voltage method

• Impedence method

• All of above

Which are adaptive systems

• Kalman filter

• Modified coulomb counting method

• Open circuit voltage method

• Coulomb counting and emf combination

Book- keeping estimation

• Coulomb counting method

• Modified coulomb counting method

• Both 1 and 2

• None of above

Book keeping method used to

• Charging the current

• Discharging the current

• Bothe 1 and 2

• None of above

SOC is measure the energy capacity as percentage of

• Rated capacity

• Below rated capacity