In today’s rapidly developing electric vehicle market,high-voltage systems (400V, 800V) have become mainstream, raising the requirements for the accuracy and reliability of current measurement. The safety and performance of batteries, electric drives, and electronic control systems increasingly depend on precise current monitoring. As a global leader in current and voltage sensor manufacturing,LEM has launched the SMU series current sensors, specifically designed for automotive applications, providing a new solution for DC current measurement under high-voltage platforms.
The SMU series is a DC current sensor designed by LEM for high-voltage automotive applications. This product utilizes open-loop Hall effect technology, providing a high level of electrical isolation between the primary high-voltage circuit and the secondary electronic circuit, ensuring measurement safety and stability.
The SMU series is positioned for high-voltage automotive applications (400V / 800V), capable of providing reliable electrical isolation between the primary side (high-voltage circuit) and the secondary side (electronic system). This is crucial for ensuring the safe and stable operation of new energy vehicle power systems.
Overview of SMU Series Technical Features
Open-loop Hall effect technology: ensures high accuracy and reliability even in high current applications.
Wide measurement range: A single housing can cover multiple current measurement ranges, with a maximum of ±1500A.
High insulation level: Provides necessary electrical isolation for automotive-grade systems.
Wide temperature adaptability: Can operate stably in harsh environments from -40°C to +125°C.
Digital communication interface: Supports LIN or UART protocols for seamless integration with onboard systems.
Performance Advantages
· Extremely high accuracy and linearity
· Extremely low thermal drift and sensitivity drift
· No insertion loss, resulting in higher system efficiency
These features make the SMU series not only perform excellently in laboratory environments but also meet the complex demands of real-world road conditions.
Typical Application Scenarios
The SMU series has significant advantages in DC current measurement, especially suitable for the following core aspects of new energy vehicles:
Battery Management System (BMS): Accurately monitors battery charge and discharge currents, ensuring battery safety and lifespan.
Electric Drive and Hybrid Systems: Provides real-time feedback on drive currents, enhancing overall vehicle performance and energy efficiency.
Energy Storage Systems: Provides reliable current detection for onboard energy storage units, optimizing energy utilization.
As LEM’s cooperative agent in China, FusiTech is committed to introducing world-leading sensor technology to the domestic market and providing technical support and application services tailored to local customer needs. The SMU series current sensors aim to contribute to the safer and more efficient development of the new energy vehicle industry through this series of innovative products.
Although small, current sensors are indispensable key components in the high-voltage systems of electric vehicles. The LEM SMU series, with its precision, stability, and safety features, provides a solid technical foundation for the electrification of modern vehicles.
*Disclaimer: Some images and content in this article are sourced from the internet, and the article is for communication and learning purposes only, not representing the stance of this account. Copyright belongs to the original author, and if there is any infringement, please contact for removal, thank you!
About Us:
FusiTech was established in 2008, focusing on electronic solution development and electronic component agency sales, with long-term deep engagement in new energy, electric vehicles, charging piles, home appliances, and touch displays, accumulating rich project technical experience and establishing stable partnerships with several Fortune 500 companies and unicorn enterprises. The company has also independently developed power modules, infrared imaging devices, and other products, widely used in industrial control, smart devices, and consumer electronics. Always adhering to the philosophy of “technological innovation empowers the future,” continuously enhancing technical service capabilities and product competitiveness.
Partners
