Article Details

Title · Authors · Abstract · Keywords · DOI · References

Design of Dual-battery Switching Control Circuit for Mobile Terminal Devices

MA Jun1,2, CAI Zicheng1,2, XIE Guangyu1,2, JIANG Guanglang1,2

(1.EVOC Smart IoT Technology Co., Ltd., Shenzhen 518107, China; 2.National Special Computer Engineering Technology Research Center, Shenzhen 518107, China)

Section：Electronic Engineering · Vol. 2026, Issue 2 · Pages：37-42 · 2096-4706（2026）02-0037-06 · CLC number：TM912 · Document code：A · DOI：10.19850/j.cnki.2096-4706.2026.02.007

Abstract

To address issues such as poor stability, insufficient flexibility and high costs in dual-battery switching management for terminal devices, this paper proposes a dual-battery switching control circuit that combines discrete components with an MCU. This circuit takes discrete components as the main body for battery switching and can respond rapidly to the connection status of batteries. The MCU undertakes the logic control of switching and the detection of battery operating status. The combination of the two enables flexible battery switching modes and supports hot swapping. When the battery power is sufficient, either battery can be replaced without shutting down the device, so as to extend the overall battery life of the device.

Keywords

dual-battery; switching; logic control; discrete component; circuit design; hot plug; MCU

References

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About the authors

Ma Jun (2001-), male, Han nationality, from Nanning, Guangxi, engineer, bachelor's degree, research direction: system design and application of industrial special computers; Cai Zicheng (1998-), male, Han nationality, from Wuzhou, Guangxi, engineer, master's degree, research direction: system design and application of industrial special computers; Xie Guangyu (1992-), male, Han ethnicity, born in Maoming, Guangdong, is an engineer with a bachelor's degree. His research focuses on the system design and application of industrial special computers; Jiang Guanglang (1985-), male, Han ethnicity, from Longyan, Fujian, is an engineer with a bachelor's degree. His research direction is system design and application of industrial special computers.