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automobile motor vehicle battery

The battery (starter battery) In the motor vehicle has tasks as follows:

• start for the internal combustion engine to provide necessary electrical energy
• the switched electrical loads at engine shutdown to provide energy
• to save from the generator to charge the battery, delivering electric energy

In the motor vehicle primarily lead-acid batteries used.

basic building block is the battery:

• The positive electrode (plus, plus disk)
• The negative electrode (negative pole, negative plate)
• the electrolyte (electrically conductive fluid)
• The cell container

The output Material for the electrodes, lead (PB). Sulfuric acid as the electrolyte is used, diluted with water.

The battery will charge in the generator delivering electrical energy is stored by chemical reactions .

In the discharge of the battery in the chemical reactions are reversed, the stored energy is released.

In the charged state is the positive plate of dark brown lead dioxide and the negative plate pure gray lead.

load is overall response:

2PbSO 4 + 2H 2 invite O ----> 2H 2 SO 4 + Pb + PbO 2

After loading is between positive and negative terminal of the battery cell stand a voltage of about 2 volts

negative and positive by the corresponding poles of the generator or charger.

In the discharged state is the plus and minus plate back in white lead sulphate, when the battery is fully discharged, there is no electrical voltage between electrodes more.

overall reaction is discharged to: Pb + PbO 2 + 2H 2 SO 4 discharged --------------> ; 2PbSO 4 + 2H 2 O

During the discharge increases from the dense electrolyte.