Schematics Ultracapacitors Vs Batteries PCB | Electronic Circuits

Schematics Ultracapacitors Vs Batteries PCB

This post will explain the advantages and disadvantages of ordinary lead-acid battery and the new age Ultracapacitors.

Most of our vehicles are fitted with lead-acid battery to meet intermittent loads to driver such as horn, turn indicators, brake light etc. The battery life is about two years if maintained properly. After the it's life is over we have to replace it by the same one usually costly one. If not, the driver may have compromise the safty features.

Ultracapacitors, with their short charging time, are ideally suited for the intermittent loads and have a usable life exceeding (over 500,000 cycles) that of vehicle. By experiments conducted in motor cycles clearly indicates that the ultracapacitors meets the requirement of powering the extra loads of the vehicle such as horn and turn lights. Ultracapacitors store energy electrostatically, which can be done at very fast charging rate.

Advantages Of Utracapacitor

  • High expected lifetime, more than 10 years
  • Ultracapacitors have high power density
  • Short charge-discharge time
  • Maintenance free
  • Wide operating temperature
  • Less weight
  • Short circuit protection
  • No special charge control needed
  • More than 90% efficiency

Disadvantages of Ultracapacitors
  • Low energy density
  • Self discharge is high

Advantages of Batteries
  • High energy density
  • Low self discharge
  • Discharge curve is flat

Disadvantages of Batteries
  • Long charging time
  • Low life time is about 1-3 years
  • Charge-discharge life of 1000 cycles approx.
  • Charging control is necessary
  • Bulky and high weight
  • Over scaling needed for some applications

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