At Seplos, we pride ourselves on delivering cutting-edge energy storage solutions tailored to meet the rigorous demands of modern industries. Today, we’re excited to introduce our SP-HV-18S High Voltage Battery Management System (BMS), a robust and scalable solution designed to optimize performance, safety, and longevity in large-scale lithium battery systems.
This high voltage BMS system is designed for industrial battery storage projects that require centralized monitoring, scalable communication, and reliable protection across large battery packs.
A Modular Architecture for Maximum Flexibility
The SP-HV-18S High Voltage Battery Management System is built on a modular architecture comprising three core components: the BCU (Battery Control Unit), BMU (Battery Monitoring Unit), and FAN (Cooling System). This design ensures seamless integration into diverse industrial applications, from grid storage to electric vehicle infrastructure. The BCU serves as the system’s brain, offering multi-layered protection against overcharge, over-discharge, overcurrent, and extreme temperatures. Meanwhile, the BMU provides precision monitoring of individual cell voltages and temperatures across up to 18 cells, ensuring real-time data accuracy even in harsh environments (-40°C to 125°C).
Uncompromising Safety and Precision
Safety is non-negotiable in high-voltage systems. Our BMU achieves static voltage sampling accuracy of <15mV and temperature sampling accuracy of ±2°C, critical for maintaining stability in LiFePO4, ternary, and other lithium chemistries. The integrated cooling fan activates at predefined thresholds (40°C cell temperature or 85°C terminal temperature), mitigating thermal runaway risks and ensuring compliance with stringent safety certifications, including CLASS B EMC and radiation standards.
Scalable Communication and Adaptive Balancing
The SP-HV-18S high voltage battery management system BMS supports CAN (250Kbps default) and RS485 (9600bps default) communication protocols, enabling seamless integration with inverters, energy management systems, and third-party hardware.
For system integrators, this makes the SP-HV-18S a practical HV BMS for projects where inverter communication and multi-module coordination are critical. Its passive balancing feature delivers up to 200mA per cell, harmonizing cell voltages to extend pack lifespan. Additionally, automatic coding simplifies installation, reducing setup time for bulk deployments.
Built for High-Voltage Industrial Applications
With support for systems up to 1500V, our BMS is engineered for high-voltage applications requiring reliability at scale. The BMU operates on 12V/24V power with a low static consumption of <100μA, minimizing energy waste. Nine temperature sensors and a 200ms sampling period ensure rapid response to dynamic conditions, while the fan’s PWM speed control optimizes cooling efficiency for fans up to 10W.
Scalable Supply Chain for Large-Scale Partnerships
For businesses and partners, scalability is key. Seplos offers a 10,000-unit monthly production capacity with a 15-day lead time, ensuring timely delivery for large orders. Our SP-HV-18S is designed for easy customization, whether adjusting communication protocols, balancing strategies, or temperature thresholds, making it a turnkey solution for OEMs and integrators.
Why Partner with Seplos?
Our SP-HV-18S isn’t just a product—it’s a commitment to advancing energy storage technology. By combining precision engineering, rigorous safety standards, and scalable production, we empower partners to deploy reliable, future-proof systems. Whether you’re scaling existing infrastructure or pioneering new applications, Seplos provides the technical support and supply chain agility to meet your goals.
Conclusion
For enterprises seeking a trusted BMS partner, the SP-HV-18S represents an opportunity to elevate performance while minimizing risk. Contact us today to discuss bulk orders, customization options, or how we can collaborate to drive innovation in your next energy project.
FAQs About the SP-HV-18S High Voltage BMS System
The SP-HV-18S is a modular battery management system designed for high-voltage lithium battery packs. It uses BCU and BMU architecture to monitor cells, manage protection functions, communicate with external equipment, and coordinate battery operation in industrial energy storage applications.
It is suitable for high-voltage applications such as commercial and industrial energy storage, large battery banks, grid storage systems, and other projects requiring centralized battery monitoring and protection.
The system supports CAN and RS485 communication, allowing it to exchange battery data with compatible inverters, energy management systems, monitoring platforms, and other system controllers.
Its BMU monitors individual cell voltage and temperature data while communicating the information to the main controller. This allows the BMS to detect abnormal operating conditions and manage protection or balancing functions accordingly.
Yes. Seplos supports OEM and integration requirements including communication settings, balancing strategies, operating thresholds, and other project-specific configurations. Final compatibility should be confirmed according to the battery architecture and connected equipment.
