公开(公告)号：US20230143440A1

公开(公告)日：2023-05-11

申请号：US17865028

申请日：2022-07-14

Applicant: STL Technology Co., Ltd.

Inventor： Wen-Fan Chang ,  Chun-Chieh Li ,  Jung-Nan Chien ,  Chun-Wei Ma

IPC: H02J7/00

CPC classification number: H02J7/0031 ,  H02J7/0049 ,  H02J7/0071 ,  H02J7/007182 ,  H02J2207/20

Abstract: This disclosure provides a battery management system. The battery management system comprises a buck converter, a discharge loop, and a microprocessor. The microprocessor comprises a battery status monitoring circuit, a timer, and a controller. When the status of the battery is in a static state, the timer starts counting a time. If the time counted by the timer is greater than or equal to a time threshold, the controller controls that the buck converter executes a bucking to an output voltage of the battery, and then controls that the discharge loop executes a discharging to the battery. Accordingly, when the status of the battery is in a static state, the battery capacity can be discharged to a safe value moderately, so that the safety of the long-storage of the battery can be ensured, and the life of the battery can be prolonged.

公开(公告)号：US20230411972A1

公开(公告)日：2023-12-21

申请号：US18125139

申请日：2023-03-23

Applicant: STL TECHNOLOGY CO., LTD.

Inventor： Wen-Fan Chang ,  Chun-Chieh Li ,  Chun-Wei Ma ,  Chia-Chang Chen

IPC: H02J7/00 ,  H02J7/34

CPC classification number: H02J7/0031 ,  H02J7/007182 ,  H02J7/342 ,  H02J7/345 ,  H02J2207/50

Abstract: A driving circuit applied to a protection switch of a battery module is disclosed. The driving circuit includes a reverse switch, a non-reverse switch, a capacitor, and a storing energy component. The reverse switch or the non-reverse switch is turned on or off by a PWM signal. When the PWM signal is at a high level, the reverse switch is turned off, the non-reverse switch is turned on, and the capacitor is charged via a battery total voltage to form a storage voltage on the capacitor. When the PWM signal is at a low level, the reverse switch is turned on, the non-reverse switch is turned off, a reference voltage is connected to the capacitor via the reverse switch to form a boosted voltage superimposed by the reference voltage and the storage voltage. Afterwards, the boosted voltage can be used to drive the protection switch to be turned on.