TWAICE

Q: Which functionalities are available to track the safety of batteries?
A: TWAICE provides KPIs indicative of problematic behavior such as DC resistance, voltage spreads and temperature spreads. It tracks and informs you when a risky threshold has been reached, when values deviate statistically from the behavior of the rest of the system, and when the time derivative of values indicates growing concern. Additionally, TWAICE provides alerting and incident log tracking so that safety issues can be detected months in advance.


Q: What is your modelling approach?
A: TWAICE battery models use a coupled electric-thermal-aging model to ensure that the battery cell’s behavior is considered in the most holistic way possible. It can be considered a combination of an ECM (equivalent-circuit-model) and a physics-informed SE (semi-empirical) model.
To create a new model based on measurements in the TWAICE battery research center, cell characterization for a complete aging model typically takes 3 to 6 months.


Q: How does the TWAICE software get the data from the battery?
A: We offer multiple flexible and easy integration options to telematic systems including via API.


Q: Is your system cybersecure? How is data security of the system maintained?
A: TWAICE is TISAX (an information security management standard similar to ISO 27001) compliant and certified. We are also in the process of obtaining ISO 27001 for the non-mobility sector. We have a rigorous policy for architecture security, data security and encryption, network security as well as data privacy and access rights policies to ensure data remains confidential and protected.


Q: How often is the analytical data updated on the dashboard?
A: We operate a near real-time monitoring solution with an ideal refresh rate of 15 minutes, dependent on customer data transfer configuration.


Q: Can you make cycling analyses of batteries in mobile applications like e-bus or e-truck?
A: Yes, our software offers cycling analysis of any kind of batteries. We only need a digital connection to the battery to run our algorithms and analytics.


Q: Is extra hardware needed to connect the system?
A: There is no hardware needed to connect the system, which is beneficial for cybersecurity practices. We are connecting the system digitally, for example via a data push from the site to our cloud, a data pull via API, or transfer of time series data to a secure FTP repository.


Q: Which parameters of the BESS are monitored (HVAC, Fire Detection) and at which level?
A: TWAICE Analytics platform can consume all BESS data and analytics can be expanded on HVAC and Inverters. This is especially relevant for availability as well as safety investigations. Monitoring on other components is possible on request.


Q: Which functionalities are available for tracking the safety of the BESS?
A: The methodology of TWAICE’s safety offering focuses on three things:
- Identifying when values have crossed a threshold, when values deviate statistically from the behavior of the rest of the system, and when the time derivative of values indicates growing concern.
- In addition, typical BMS systems and monitoring solutions do not provide insights into important safety factors like DC resistance, voltage spreads, and temperature spreads. These KPIs are highly indicative of problematic behavior.
- The TWAICE platform provides alerting and incident log tracking to detect safety issues weeks to months in advance so reactionary protection measures like water suppression systems or inert gas systems do not have to be engaged.