In a transformative breakthrough for electric vehicles (EVs), LEM has unveiled its high-voltage battery sensor that masterfully combines two distinct technologies. The introduction of this sensor, named the Hybrid Supervising Unit (HSU), marks a bold step forward in battery management systems, promising improved safety and efficiency within a compact and cost-effective design.
Merging Technologies for Enhanced Efficiency
The core innovation lies in LEM’s ability to integrate both shunt and Hall effect technologies into a single unit. Historically, these technologies were employed as separate components, doubling costs and space in electric vehicles’ battery management systems (BMS). By merging these into the HSU, LEM has set a new standard that simplifies the system architecture while maintaining or even improving functional capabilities.
Advantages for Electric Vehicles
This hybrid approach is significant for several reasons. Firstly, it allows the BMS to efficiently perform critical functions such as managing the battery’s state of charge, ensuring safety, and optimizing cell balance without requiring complex setups. As stated by Jérémie Piro, Product Manager at LEM, “The HSU represents a significant innovation in sensor technology, being the first to combine shunt and Hall effect sensing into a single component”.
Safety and Precision at Its Core
With the HSU, system engineers no longer need separate triggers for high amperage readings which makes achieving high safety levels, including the ASIL D level for automotive safety, not just feasible but straightforward. The sensor maintains a remarkable accuracy of 2% at 500A and 5% at 2000A across its operating range of −40°C to +125°C, which highlights its precision and robustness.
Ready for Market and Future Expansion
The initial release of the HSU comes in two sizes, with samples already available. Looking forward, LEM plans to further innovate by incorporating coreless Hall-effect features, allowing even more compact designs without compromising the sensor’s performance. This aligns with LEM’s vision of seamlessly integrating more advanced technologies to evolve EV battery systems.
By unifying two pivotal sensing technologies, LEM’s HSU offers the EV industry a more integrated, efficient, and scalable solution. According to Batteries News, this is poised to redefine how battery management systems are crafted and deployed.
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