Lithium Polymer Battery Cell Balancing

The use of cell balancing enables the system engineer to select a battery with larger capacity for an application because balancing allows the battery to achieve a higher state of charge soc.

Lithium polymer battery cell balancing.

Learn about the difference of energy and power requirements in a battery. Equalizing the socs of the various cells in a battery. The application is designed for battery packs with two three or four li ion or li pol cells in a series. The second reason that you need a lipo compatible charger is balancing.

Lithium polymer or li po refers to a lithium ion battery that uses a polymer electrolyte instead of a liquid electrolyte. Balancing is a term we use to describe the act of equalizing the voltage of each cell in a battery pack. Balancing li ion li polymer batteries battery balancing circuit many projects are usually carried out with a single battery. This helps with the performance of the battery.

This enables the construction of pouch cells with different geometries. The early li ion battery was considered fragile and unsuitable for high loads. Its job may be somewhat hindered by the 3rd one. Variations in cell resistance.

Balancing takes care only of the 1st one. Designing balancing algorithms and gives examples of successful cell balancings. Introduction different algorithms of cell balancing are often discussed when multiple serial cells are used in a battery pack for particular device. An2344 integrates cell balancing and fuel gauge methods into a multi cell battery charger.

In so doing it compensates also for the 2nd one. The battery cells are connected in series and all cells are charged with the same current. Serial battery connection is required for higher voltages if the charger does not have balancing deterioration occurs according to the capacity of the batteries the batteries that are loaded. An example of how to bottom balance your lithium battery pack.

Cell to cell variations in leakage. What balancing does not do is take care of the 4th one. This has changed and today lithium based systems stand shoulder to shoulder with the robust nickel and lead chemistries. Without the enhancement of cell balancing a conservative design does not allow the soc to approach 100.

Means used to perform cell balancing typically include by passing some of the cells during charge and sometimes. We balance lipo batteries to ensure each cell discharges the same amount. It includes dedicated pc based software for real time viewing and analysis of the charge cell balance and fuel gauge processes.