公开(公告)号：US20150055264A1

公开(公告)日：2015-02-26

申请号：US14446015

申请日：2014-07-29

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jianping WANG ,  Yang Yang ,  Pengfei WANG

IPC: H02H9/02

CPC classification number: H02H9/025

Abstract: Embodiments of the present invention relate to the field of electronic technologies, and provide a current-limiting circuit and apparatus to reduce costs of the current-limiting circuit and an occupied PCB board area. The circuit comprises a detecting resistor, a current-limiting resistor, a precise current unit, a power metal oxide MOS transistor, an operational amplifier OP and an input voltage end.

Abstract translation: 本发明的实施例涉及电子技术领域，并且提供限流电路和装置，以降低限流电路和被占用的PCB板面积的成本。 该电路包括检测电阻器，限流电阻器，精确电流单元，功率金属氧化物MOS晶体管，运算放大器OP和输入电压端。

公开(公告)号：US20150102778A1

公开(公告)日：2015-04-16

申请号：US14500787

申请日：2014-09-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yang YANG ,  Hui LI ,  Jianping WANG ,  Pengfei WANG

IPC: H02J7/00

CPC classification number: H02J7/0036

Abstract: Embodiments of the present invention provide a battery presence detecting apparatus, including: a detection triggering module, configured to detect a charging current on a battery terminal and trigger a logic control module when the charging current is less than a preset current threshold; the logic control module, configured to turn off a battery charging system and instruct a charging and discharging balancing module to perform a charging operation and then a discharging operation on the battery terminal; and a detection determining module, configured to detect a voltage on the battery terminal when the discharging operation is performed and determine whether the voltage on the battery terminal is less than a preset detection voltage, and if the voltage on the battery terminal is less than the preset detection voltage, determine that the battery is absent, and otherwise, determine that the battery is present.

Abstract translation: 本发明的实施例提供一种电池存在检测装置，包括：检测触发模块，用于在充电电流小于预设电流阈值时检测电池端子上的充电电流并触发逻辑控制模块; 所述逻辑控制模块被配置为关闭电池充电系统并指示充电和放电平衡模块执行充电操作，然后对所述电池端子进行放电操作; 以及检测判定模块，被配置为当执行放电操作时检测电池端子上的电压，并且确定电池端子上的电压是否小于预设的检测电压，并且如果电池端子上的电压小于 预设检测电压，确定电池不存在，否则确定电池存在。