Monday, October 26, 2015

Circuit Diagram LiPo Battery Charger using LM324

Robotronicdiagram. - Here is Circuit Diagram LiPo Battery Charger using LM324 like in Figure 1 below. The main component in this LiPo Battery Charger is LM324 IC. 

Circuit Diagram 

Component Part
  1. LM7809 IC
  2. Resistors
  3. LM324 IC
  4. 2N2222 Transistor
  5. LED
  6. IN4148 Diode
Description

Circuit diagram like in Figure 1 above is Circuit Diagram LiPo Battery Charger using LM324. According Circuitstoday site describe that Li-Po battery or Lithium-Polymer battery is a rechargeable battery based on the Lithium-ion technology enclosed in a flexible pouch. This soft, flexible pouch makes them very light with a compromise in mechanical strength. Li-Po batteries are widely used in applications where weight is a critical factor. The common applications are radio controlled model flight, RC toys, hand held devices etc.

The Lithium Polymer battery is evolved from the Lithium Metal Batteries.The main difference is that instead of using Lithium salt electrolyte binded in organic solvents like  Ethylene carbonate, Di Methyl Carbonate Di Ethyl Carbonate , Li-Po batteries use polymer electrolytes like Poly Ethylene Oxide, Poly Methyl Methacrylate, Poly Acrilonitrile etc.   The output voltage of Li-Po battery depends up on the technology used behind it. It is 2.7-3.0 V (discharged) to  4.20-4.35 V( charged) for cells based on Lithium Metal Oxides and it is 1.8-2.0 V (discharged) to 3.6-3.8 V (charged) for cells based on  Lithium Iron Phosphate. The charging current is usually 1/5 of the mAH rating of the battery.

Like other Lithium batteries the Li-Po batteries are also prone to problems related with over charging, deep discharging, over temperature, short circuit etc. Any of these problem may result in permanent damage to the battery or even explosion. In order to avoid such problems, great care must be given while designing LiPo battery charger circuits.

Here we are discussing about a LiPo battery charger that can charge a 3.7V/360mAh cell. The charging voltage is limited to 4 volts for safety and the charging current is limited to 63mA.

Please read more this article from original source about Circuit Diagram LiPo Battery Charger using LM324 using link Here.


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