Modern portable power stations are becoming essential tools for various applications, particularly in outdoor activities, home emergency backup, and powering high-power devices. The growth of these devices is driven primarily by increasing demand and technological advancements in battery and semiconductor technologies. As a result, high capacity, long runtime, and high efficiency have become key factors in users’ decisions when choosing a portable power station.

Users expect power stations not only to supply power to multiple devices for extended periods but also to handle high-power loads effectively. This has led to the adoption of high-energy-density batteries, such as lithium iron phosphate (LiFePO4) batteries, which offer greater energy density, longer lifespan, and improved safety compared to traditional lead-acid batteries. In this context, lithium battery protection modules and high-reliability MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) are critical components that directly influence the device's performance, safety, and longevity.

MOSFETs play a crucial role in power stations. To ensure efficient power delivery under normal loads, MOSFETs must provide a low-resistance conduction path, minimizing power loss and maximizing system efficiency. This is particularly important in high-power applications like power stations, where low on-resistance (RdsOn) MOSFETs significantly reduce heat loss and enhance energy utilization.

Moreover, MOSFETs must exhibit excellent surge current tolerance and fast response characteristics to withstand transient spikes caused by abnormal currents. This is especially important in high-power systems, where rapid switching is necessary to protect the battery and other components from overheating or damage during sudden current fluctuations.

Most power stations are designed with multiple battery cells connected in series to increase the battery pack's output voltage and overall energy capacity. Each cell needs precise management, and this is where the Battery Management System (BMS) IC becomes essential. The BMS ensures balanced charging of the cells, maximizing energy utilization across the entire battery pack. Each cell is typically equipped with a MOSFET switch to control charging and discharging, preventing overcharging or deep discharging that could degrade the battery's lifespan and performance.

In large-capacity power stations, the number of battery cells connected in series can exceed sixteen. For instance, with a lithium iron phosphate battery having a nominal voltage of 3.2V per cell, the total voltage of the battery pack can exceed 50V when multiple cells are connected. This raises the requirements for MOSFETs in terms of voltage tolerance. The PGY10N037, a shielded-gate type Power MOSFET with a voltage rating of 100V, an on-resistance of only 3.0mΩ, and a maximum continuous drain current of 130A, is perfectly suited for high-capacity battery pack applications. Its ultra-low on-resistance ensures efficient operation, even under high-power loads, while maintaining stable performance and meeting the high-efficiency, safety, and longevity requirements of large-capacity power stations.

(HTsemi MOSFET used in the power station board design)

In summary, one of the key technologies behind power stations is the high-performance, reliable MOSFET, which influences overall power conversion efficiency, safety, and durability. As the demand for high-capacity, high-efficiency portable energy storage devices continues to grow, MOSFET technological innovations and optimized battery management systems will drive the development of power stations, leading to higher performance and broader application scenarios.