Battery passport & event logging
Log and monitor battery parameters to ensure safety, optimize charging and increase lifetime.
The BMS record vital parameters like voltage, current, temperature, and others, over the batteries’ lifecycle even when the battery is switched off, to fulfill the functionalities below:
- Immediate derive information on actual cell capacity, SOC, SOH, power consumption (charge/discharge), remaining operating time of cell, etc.
- Later extraction of typical mission profiles. Together with advanced machine learning algorithms, the battery could be performance-tuned or proactively pre-conditioned when an acquired load scenario occurs.
- As a flight-recorder like black-box, which continuously records all relevant battery data to track-back root causesof malfunctions, clarify warranties in case of (hazardous) incidents or simply support 'pay-per-use'-type new business models.
Excelon F-RAM allows capturing this data instantly while providing high endurance for continuous writes. It reliably stores critical records on battery status, consumes low power, and is ASIL-B compliant for additional safety of the system.
Infineon’s highly secured solutions
- The embedded security functions of the micro-controller: the HSM for Infineon's AURIX™ family
- By additional extended fast-write, high endurance NVM: Semper™ Secure NOR Flash memories.
Semper™ Secure Flash protects your data through its secure regions, secured transactions, and secured identity. It delivers security, safety, and reliability to automotive and other systems at a low total-cost-of-ownership. This advanced, secured, and easy-to-use NOR Flash device protects code and data from hackers with unparalleled system integrity.
To learn more about how Semper Secure NOR flash can protect your BMS data, please read our white papers:
ExcelonTM F-RAM™, like any other nonvolatile memory technology, is subject to physical degradation that can eventually lead to device failure if not addressed appropriately. F-RAM write/read endurance and data retention are the two end-of-life (EoL) parameters to specify its reliability and performance in a system. Learn more about the F-RAM data retention performance at various operating temperatures and find a method and guidance to accurately calculate the system’s EoL based on its operating temperature profile. Check the application note.
- Datalogging in Battery Management Systems:
- Real-time log of vital parameters like voltage, current, temperature etc.
- Real-time log of SoC, SoH, charge/discharge cycles etc.
- Data collection for predictive maintenance of battery pack
F-RAM for Automotive markets provides fast writes at full interface speed. F-RAM does not have any write delays and data is instantly nonvolatile. Traditional nonvolatile memories have delays of 5 or more milliseconds before data becomes nonvolatile. If power is disrupted, pending data is lost unless the system has extra capacitance or batteries to keep the system on until data is stored.
F-RAM offers virtually unlimited endurance of 100 trillion read/write cycles. Traditional nonvolatile memories typically have less than 1 million cycle endurance, forcing system designers to use complex wear-leveling routines and up to 4x more density to prolong the lifetime of these memories.
