Practical Current Sensing for Battery Management Using Resistors

Wednesday, September 11 10:10 AM - 10:30 AM

Location: Onyx Ballroom

Event Information

Badge Type: Paid

Description: Efficient battery management almost always uses some form of current sensing. Optimum battery performance occurs when the charging current is controlled, and when current draw from the battery bank is monitored. Traditional methods in use today use current transformers, hall effect devices, using the Rds-on of MOSFETS, or current sense resistors. All of these methods have their pros and cons. However, recent advancements in the manufacture of very low resistance resistors (shunts) make them an attractive candidate for this function. Current sense resistors are now cost effectively manufactured with current ratings up to 600 amperes and resistance values to 100 micro-ohms. This paper will serve to outline the advantages/disadvantages of various current sensing methods and help instruct on the proper resistor selection and board layout for accuracy, economy, and optimum performance in battery management circuits.

Level: All

Type: Technology Lightning Talk

Show: Technology Lightning Talks: Accelerating Discovery