SMPS Battery Charger

DESCRIPTION OF AN SMPS BASED BOOST-CUM-TRICKLE BATTERY CHARGER

(Refer to the attached diagram-SMPS-CHRGR-1)

 

DESCRIPTION

  • Battery Charging is a complex electro technical process, in which the discharged electrical energy must be replenished from the electrical network.
  • Quality of the charging process is critical to the health & longevity of the battery.
  • Therefore battery charger plays a vital role in life & performance of today’s  industrial batteries
  • In low voltage & low power application SMPS based automatic charger is the most economic, efficient and versatile solution
  • ESI SMPS Chargers are designed to provide a perfect balance between maximum utilization of battery capacity and safe charging
  • More intelligent techniques are implemented in modern day’s charger with the help of microcontrollers for faster charging

OPERATION

  • A typical Switched Mode Power Supply incorporates a front end AC-DC rectifier to generate an unregulated DC input voltage.
  • A high frequency chopper (MOSFET/IGBT) then chops the input DC Voltage.
  • After that a high frequency transformer isolates, steps down and converts this square wave DC to square wave AC output.
  • It is then rectified & filtered to generate a smooth ripple free output voltage.
  • Pulse Width Modulation technique is generally employed to regulate the SMPS output

SALIENT FEATURES OF ESI SMPS BATTERY CHARGER

  • Compact & light
  • High efficiency, more than 80%
  • Very low ripple, typically less than 1% RMS
  • Excellent line & load regulation
  • Fast transient response
  • Very wide input voltage window (100-270V)
  • Wall/table/panel mounting options are available as per customer’s requirement
  • At least 40% lower in cost compared to equivalent SCR charger
  • Automatic Boost/trickle change over with CC-CV mode of charging
  • Provision of temperature compensation feedback loop, which enhances battery life.