Automotive Batteries

Introduction

Car battery in electro chemical device which have capability to store and reproduce electrical energy. Car battery is storing electricity in the form of chemical energy. Electro chemical is a reaction which takes place when two dissimilar material plates are placed in electrolyte then electric current flows in the result between the two electrodes. The two dissimilar plates are made of lead. These plates have mesh like structure. These plates hold two different active materials in their mesh type structure. When such plates are immersed in acidic electrolyte, electricity is produced. Batteries produces DC or direct current. The DC current has property that is flows in one direction and it don’t change its direction and quantity with time.

There are two operation performed in a lead acid battery. Those are charging and discharging. When battery is charging, Current is flowing from the charger into the battery and battery stores this power in the form of chemical energy. Next when discharging, the battery chemical reacts and it produces electricity and current flows from the battery to the load. When the battery discharges the plate material reacts with electrolyte acid and changes its chemical state. This change of state can the reversed by charging the battery and by passing the current into the battery. So this action is repeated hundreds time during the battery service life. Eventually time comes when plates are destroyed permanently and the battery no more deliver the current or store the energy. At this point the battery becomes unserviceable and needs replacement. The old batteries are sent back to manufacturer for recycling.

Automotive or car battery has crucial role and function in vehicle. Such functions are as under:

The battery provides electricity to all vehicle accessories when engine is stopped and when the charging system don’t charge the battery.

When the vehicle is started and running, it store the energy and give it back when the vehicle engine is stopped.

It helps to provide power to the vehicle when extra power demand comes and alternator could not fulfill the needs.

The battery works like a stabilizer to regulate the voltage for all the automotive electrical system.

The battery starts the vehicle engine from stand still. When first time starting the engine from stop, the battery provides substantial amount of current to the self-starter which is a dc motor and its cranks the engine. The same time it provides the electrical power to the rest of the vehicle electrical systems to make the car started.