公开(公告)号：US20240356455A1

公开(公告)日：2024-10-24

申请号：US18579955

申请日：2022-07-08

Applicant: ZTE CORPORATION

Inventor： Rundong LIU ,  Hong WANG ,  Jianping ZHOU ,  Jingxuan ZHOU ,  Zhexu LI ,  Lingsong YI

IPC: H02M7/217 ,  H02M3/158

CPC classification number: H02M7/217 ,  H02M3/158

Abstract: A voltage conversion circuit, a control method, a power supply device, and a storage medium are provided. The circuit may include a fourth switch module, a third switch module, a first switch module, a second switch module and a ground lead which are sequentially connected in series; a first capacitor connected to a first common terminal and a second common terminal respectively; a second capacitor connected to a power output terminal and a ground lead; a driving module configured to regulate an initial duty ratio of a driving signal for each of the first to fourth switch modules, based on a capacitor voltage of both ends of the first capacitor; and an inductor connected with a power input terminal and a third common terminal respectively, or connected with the third common terminal and the power output terminal respectively.

公开(公告)号：US20240266846A1

公开(公告)日：2024-08-08

申请号：US18564065

申请日：2022-04-02

Applicant: ZTE CORPORATION

Inventor： Yunlu SHAO ,  Fangchun WANG ,  Lingsong YI ,  Wenbing WANG ,  Cheng GAO ,  Yu PENG

IPC: H02J7/00 ,  H02J7/34

CPC classification number: H02J7/00304 ,  H02J7/34 ,  H02J2207/20

Abstract: Provided are a control circuit (100), a circuit board assembly, and a battery (200) parallel system. The control circuit (100) is disposed between a battery (200) and a busbar (300), and the control circuit (100) comprises an acquisition unit (1), a control unit (2), and a current-limiting circuit (3). The control unit (2) is used to start timing when the current of a positive electrode of the battery (200) is greater than a preset threshold, and after the duration of the voltage of the positive electrode of the battery (200) greater than a first preset threshold is greater than a preset time, reduces the current of the positive electrode of the battery (200) by means of controlling the current-limiting circuit (3), until the current of the positive electrode of the battery (200) is less than or equal to the preset threshold.