Fraunhofer Institute for Silicon Technology
Fraunhofer Institute for Silicon Technology

Maximize safety, Protect lifetime!

Smart Battery Cells

Nowadays, a device powered by a smart battery is often equipped with electronics that provide real-time monitoring and reporting of critical performance data.

Our contribution to battery condition monitoring during operation is based on integrating different type of sensors to measure electrode potentials, temperature, pressure, and volume expansion. 

With two decades of accumulated experience, we understand how battery cells must be designed to maximizing  device and user safety, accelerate charging time and enhance device lifetime.   

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  • Enhance the Li-ion battery safety by gaining knowledge about actual electrode potential. Detection of safety- critical states, especially Li-plating
  • Maximize your battery lifetime, by preventing overheating, monitoring the in-cell temperature generation during operation
  • Reduce charging time by adapting to the actual battery cell condition, aging and usage 

Integrating a battery into electronic devices that are getting smaller and smaller while inherently producing heat brings along intrinsic challenges. Improved CPU performance paired with enhanced functionality requires larger battery cells and surfaces, making it difficult to manage temperature distribution over the equipment's lifetime.

To optimize electrochemical stability and thermal management tailored to the use case, a problem-adapted cell design is required. Key parameters such as cycle stability and temperature stability can also be optimized here.

Optical Glass Fiber Sensors

  • Monitoring of cell parameters directly during battery operation
  • In-situ monitoring of temperature and volume changes

➢ Improved battery safety

Reference Electrodes

  • Monitoring of actual electrode voltages
  • Detection of safety critical states, especially Li-plating

➢ Improved battery safety

 

Temperature Sensors

  • Monitoring of temperature generation during operation
  • Detection of temperature distribution possible
  • Detection of overheating

➢ Improved battery safety and increased operation time

 

Cell-internal sensor technology

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