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Position:IcFull.com » IC Electronic information » Category: I

IC Electronic information

Introduction battery performance

In Electronic Infomation Category: I | on February 09,2012

(1) the battery open circuit voltage

(2) the battery internal resistance

(3) battery voltage

(4) charging voltage

charging voltage is a secondary battery is charging, the external power added to the battery voltage across it. The basic method of exercise and EL6251CM datasheet and charging current charging and EL6251CM price and constant voltage charging. Commonly used constant current charge, which is characterized by the process of charging when the charging current constant. As the charging progresses, the active substance is restored, the electrode reaction area is shrinking, the electrical polarization gradually increased.

(5) Battery capacity

Battery capacity refers to the amount of power from the battery, commonly used C, the unit commonly used in Ah or mAh that. Capacity is an important indicator of battery performance. Battery capacity is usually divided into theoretical capacity, practical capacity and EL6251CM suppliers and rated capacity. Battery capacity determined by the electrode capacity, if the electrode capacity ranging from small battery capacity depends on the capacity of that electrode, but it is not the sum of positive and negative capacity.

(6) storage performance and battery life

one of the main characteristics of chemical power sources is used to release electrical energy can be stored when not in power. The so-called storage performance for the secondary battery is to charge retention. For the secondary battery, battery life good or bad performance when the measure is an important parameter. Following a secondary battery charge and discharge, called a cycle (or the loop). In a certain charge and discharge system, the battery capacity reaches a specified value before the battery can withstand the charge and discharge cycle is called the secondary battery. Lithium-ion battery has excellent storage performance and long cycle life.

(7) protection circuit

and dedicated by the two FET protection manifold S - 8232 composition, overcharge and over discharge control tube FET2 control tube FET1 series in the circuit, the IC monitors the battery voltage protection and control When the battery voltage up to 4.2V, over charging protection tube FET1 off, stop charging. To prevent malfunction, usually outside the circuit delay plus a capacitor. When the battery in a discharged state, the battery voltage down to 2.55V, the discharge control tube FET1 deadline to stop power to the load. Overcurrent protection is greater when the load current flows, control FET1 to end, stop the load discharge, the purpose is to protect the battery and FET. Over-current detection is the use of FET on-resistance as a sense resistor to monitor its voltage drop, when the voltage drop exceeds a set value to stop the discharge.

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