Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wordpress-seo domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /var/www/html/wp-includes/functions.php on line 6260 SoCUS Seeks New Cost-Effective Sensor System to Measure State of Charge - Ink World Magazine

What are you searching for?

Sign in
Flexible Electronics News

SoCUS Seeks New Cost-Effective Sensor System to Measure State of Charge

Developing systems that can be integrated directly into the battery and can measure the state of charge more accurately.

Author Image

By: DAVID SAVASTANO

Contributing Editor, Coatings World and Ink World, Coatings World and Ink World Magazine

Batteries are indispensable for electric vehicles and other mobile devices that require electrical power. Complex battery management systems (BMS) are needed to estimate, for example, the range and durability of the battery. They determine the state of charge for each cell on the basis of current (Coulomb Counting) and voltage.
 
As BMS calculations are based on default values, they are prone to error. Especially with frequent partial charge and certain battery cell types, no precise measurement of the state of charge is possible. In addition, these systems consume some of the energy themselves.
 
In the SoCUS project, the Fraunhofer R&D Center for Electromobility Bavaria is developing cost-effective sensor systems that can be integrated directly into the battery and can measure the state of charge more accurately than commercially available systems. The systems use ultrasound pulses to measure and evaluate the density of the negative anode which changes with the state of charge of the cell.
 
The new sensor system is suited for all kinds of battery types but has been especially tested for lithium-ion batteries. Typical fields of application are electric vehicles, stationary storage systems, and drones.
 
More information: Journal of Power Sources, Volume 343, 1 March 2017: Probing lithium-ion batteries’ state-of-charge using ultrasonic transmission.



Sensors with 1 cm and 2 cm diameter to measure the state of charge of the battery. (Photo K. Selsam, Fraunhofer ISC)


Add us as a preferred source on Google

Get the latest Ink World magazine news, insights and analysis in your Google Search and AI experiences.

Add Ink World magazine as a preferred source on Google (opens in a new tab)

Keep Up With Our Content. Subscribe To Ink World magazine Newsletters

Topics