Lithium Ion (Li-Ion) Battery charger

Li ion battery chargerWe can charge Ni-Cd or Ni-MH simply by placing a series resistor to limit current from the power source to make efficient loading. But not so with lithium ion cell (Li-Ion) which has a capacity greater than ever and don’t need to be completely discharged to charge them, but require a strictly controlled charging.

If we talk about the lithium ion cell is charged a third time against a pack of Ni-MH or one-sixth of the same cadmium. But this requires a relatively high supply current to the cell during the charging process and must be provided in the rails pulse control.

In this type of battery charging uncontrolled drip (common in alarm systems, for example) or the load resistor in series with the power lead, without exception, It will destroy itself

But there are a number of active components, semiconductors, capable of carrying the load, control and maintenance of these cells with almost no additional external components.

In the diagram we see the circuit typical Li-Ion battery charger, where it finds that it is easier to make a performance similar to discrete electronics. This chip is responsible for measuring the state of the battery (through its terminal FeedBack) and sent by the control voltage output terminal (Out). The capacitor allow to Serve as parasites RF filter and potentiometer 50 to adjust the system according to the operating voltage of the cell.

This Lithium Ion charger circuit can be powered by a DC voltage between 6 and 10V with a current equal to 1.5 times the capacity of cells to be charged.

Once the power is turned on or put the battery in the circuit, check the charging status of it and, if necessary, to the load. After a the circuit the load entering the standby mode, periodically check the status of the cells with whether it should continue to charging.

The Li-Ion Battery charger circuit is designed for the battery with a Li-Ion cell. Importantly, this battery can not charge either in series or in parallel, so the system must be assembled for each cell you want to charge simultaneously.

Power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another and, as a result, power supplies are sometimes referred to as electric power converters. Some power supplies are discrete, stand-alone devices, whereas others are built into larger devices along with their loads. Examples of the latter include power supplies found in desktop computers and consumer electronics devices.


Tags: Lithium Ion battery Lithium Ion battery charger Lithium Ion charger Lithium Ion charger circuit diagram

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  1. author

    Robert3 years ago

    Good day
    We just want to find out if you can supply us 50pcs of any 100AH 12volts AGM batteries group-27 for a project
    We can also arrange a direct pick up from you.you don’t have to worry about the shipping to our project location.
    Waiting to hear from you on stock availability and quotation.

    Regards.
    Robert James
    2346 Lamington Road
    Bedminster
    07921
    New Jersey
    energyhomesupply Inc
    Phone;830 468 4014