Automotive storage technology
Sensors in Automotive Batteries
Energy efficiency is set to play a decisive role in the years ahead, particularly in the modern mobility sector. Electrically assisted hybrids, fuel cell vehicles and fully electric vehicles will be the mobility solution of the future.
This will require efficient use of energy, plus safe and reliable systems, but the decisive factor will be monitoring the available energy flowing in the battery through precision measurement of voltage and current. With our experience in precision measurement applications, we are ideally positioned to fulfil these requirements. We are also an internationally recognised specialist and leader when it comes to other important aspects such as free-forming options during implementation and the weight of the individual components. We provide both standardised and customer-specific solutions to meet these challenges.
Our primary goal is always to find the best solution for our customers in terms of TCO and functionality. Our IPC and IVT series form the basis for all our precision measurement development work. With an operating range up to 20 kA peak and up to 2.5 kA continuous current, reliable and precise voltage measurement up to 600 V, isolation voltages up to 5 kV and temperatures up to 125 °C, they meet even the most stringent requirements.
ISAscale® IVT – current and voltage measurement in hybrid and electric vehicles
The IVT family of measurement modules has been designed especially for use in high-voltage battery management systems and thus for monitoring the status of Li-ion batteries.
High-precision total current measurement is central to this functionality. Depending on measurement module design, it is possible to detect continuous currents up to 2,500 A. In addition to performing current measurement, up to three switchable high-voltage measurement channels can be integrated for measuring total battery stack voltage and performing comprehensive monitoring of the intermediate circuit voltage and relay functions. A trigger input is available for synchronising multiple sensors. The modularity of the IVT allows for a variety of functions above and beyond simple current measurement. These include redundant, programmable overcurrent detection and bus bar temperature measurement. When used on the high side of high-voltage battery systems, the communications interface and the measurement module supply can be galvanically isolated. The systems can be configured for individual applications. Their unique performance characteristics make them an obvious choice for applications such as hybrid and electric vehicles, Li-ion-based industrial energy storage systems, charging stations and fuel cell monitoring.
Sensor for Li-ion cells
In addition to applications in HV traction batteries, four-cell Li-ion starter battery applications in particular will become increasingly important. The ISAscale® IB4 sensor’s precision measurement capability allows Isabellenhütte to provide complete battery management module solutions that are perfect for direct application in cell blocks of this type. We can customise our products to meet customers’ specific automotive needs, thereby also optimising the cost structure.