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。

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：US20150008891A1

公开(公告)日：2015-01-08

申请号：US14324728

申请日：2014-07-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ming LI ,  Jianping WANG ,  Caofei HENG

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/08 ,  H03K17/063 ,  H03K2217/0081

Abstract: Embodiments of the present invention disclose a power supply conversion apparatus, where a control unit generates a corresponding control signal according to a received high level pulse width modulation signal, to control a first PMOS transistor Q3, a second PMOS transistor Q4, and a second NMOS transistor Q2 to be turned off successively, and then to make a first NMOS transistor Q1 conducted, which makes a voltage at a second end of a bootstrap capacitor to rise from ground potential to a PVDD, so that a voltage at a first end of the bootstrap capacitor rises to a PVDD+AVDD as the voltage at the second end rises, and a gate turn-on voltage of the first NMOS transistor Q1 reaches the PVDD+AVDD.

Abstract translation: 本发明的实施例公开了一种电源转换装置，其中控制单元根据接收的高电平脉冲宽度调制信号产生相应的控制信号，以控制第一PMOS晶体管Q3，第二PMOS晶体管Q4和第二NMOS 晶体管Q2依次关断，然后使导通的第一NMOS晶体管Q1导通，使自举电容器的第二端的电压从地电位上升到PVDD，使得第一端的电压 随着第二端的电压上升，自举电容上升到PVDD + AVDD，第一NMOS晶体管Q1的栅极导通电压达到PVDD + AVDD。

公开(公告)号：US20220311831A1

公开(公告)日：2022-09-29

申请号：US17842148

申请日：2022-06-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianping WANG ,  Guangying ZHENG ,  Qin WU ,  Zhiguo ZHU

IPC: H04L67/146 ,  H04L41/04 ,  H04L67/55

Abstract: An embodiment of this application discloses a device management method. A first network management device may obtain subscription parameter information, where the subscription parameter information is used to indicate a subscription parameter used during a process of establishing a first subscription session, and the first subscription session is used to indicate a first network device to send subscription data to a network management device managing the first network device. After the first network management device determines that the first subscription session is interrupted, the first network management device may generate a request message based on the subscription parameter information, and send the request message to a network device managed by the first network management device.

公开(公告)号：US20210274020A1

公开(公告)日：2021-09-02

申请号：US17321083

申请日：2021-05-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping WANG ,  Chunrong JIN

IPC: H04L29/08

Abstract: Embodiments of this application disclose a communication method, a client device, and a server device. The method includes: generating, a request packet and sending the request packet to a server device, where the request packet is used to indicate the server device to operate data of a data model; generating, a status query packet based on the request packet, where the status query packet includes status query information, and the status query information is used to request the server device to obtain a processing status in which the server device processes the request packet; sending, the status query packet to the server device; and receiving, a first packet that is sent by the server device based on the status query packet, where the first packet includes the processing status of the request packet.

公开(公告)号：US20140375250A1

公开(公告)日：2014-12-25

申请号：US14314989

申请日：2014-06-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hui LI ,  Jianping WANG ,  Yang YANG

IPC: H02J7/00

CPC classification number: H02J7/0072 ,  H02J7/0052 ,  Y02B40/90

Abstract: A charging apparatus is provided, and relatively high charging efficiency is still maintained when a charging current changes. The charging apparatus includes: a voltage regulator; a charging power tube, where a source electrode of the charging power tube is connected to an output end of the voltage regulator and a drain electrode of the charging power tube is connected to a positive electrode of a battery, and the charging power tube is configured to generate a charging current; a charging controller, where an output end of the charging controller is connected to a gate electrode of the charging power tube, and the charging controller is configured to control the charging power tube to adjust the charging current; and a reference voltage module, configured to obtain the charging current and a battery voltage and output a reference voltage.

Abstract translation: 提供充电装置，并且当充电电流变化时仍然保持相对高的充电效率。 充电装置包括：电压调节器; 充电功率管，其中充电功率管的源电极连接到电压调节器的输出端，并且充电功率管的漏电极连接到电池的正极，并且充电功率管被配置 产生充电电流; 充电控制器，其中充电控制器的输出端连接到充电功率管的栅电极，并且充电控制器被配置为控制充电功率管来调节充电电流; 以及参考电压模块，被配置为获得充电电流和电池电压并输出参考电压。