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公开(公告)号：US11811254B2
公开(公告)日：2023-11-07
申请号：US17860402
申请日：2022-07-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jun Song , Pengfei Wang
CPC classification number: H02J7/007 , H02J7/00034 , H02J2207/20 , H02M3/07
Abstract: A power conversion circuit includes a first end of a first switch element coupled to an input power supply; a second end of the first switch element coupled to a first end of a first energy storage element, and a first end of a second switch element; a second end of the first energy storage element coupled to ground through a third switch element, and a first end of a fourth switch element; a second end of the second switch element coupled and connected to a battery; a first end of a second energy storage element coupled to two ends of the first energy storage element through a fifth switch element and a sixth switch element; a second end of the second energy storage element coupled to the battery; and a second end of the fourth switch element coupled to the battery.
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公开(公告)号：US11342774B2
公开(公告)日：2022-05-24
申请号：US16721651
申请日：2019-12-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jun Song , Pengfei Wang
IPC: H02J7/00
Abstract: The invention provides a charging circuit, comprising a power conversion circuit, and an information collection and signal control circuit. The power conversion circuit is coupled to a voltage source and configured to provide a charging current to a battery. The power conversion circuit comprises a plurality of switch elements, and at least two storage elements, the at least two storage elements are selectively coupled to the voltage source and the output port through the plurality of switch elements. The information collection and signal control circuit is configured to collect information from the voltage source and battery, and control the plurality of switch elements to have the power conversion circuit work under different charging modes.
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3.发明申请公开(公告)号：US20190372462A1
公开(公告)日：2019-12-05
申请号：US16539573
申请日：2019-08-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jun Song , Pengfei Wang
Abstract: A voltage converter includes a third switch element and a second energy storage element, and an energy storage circuit comprising a first switch element, a second switch element, and a first energy storage element. In a time period, the first switch element is in an on state, the second switch element and the third switch element are in an off state, and a voltage source coupled to the voltage converter charges the first energy storage element and the second energy storage element, and in a following time period, the first switch element is in an off state, the second switch element and the third switch element are in an on state, the first energy storage element and the second energy storage element discharge to a load coupled to the voltage converter.
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公开(公告)号：US20230017143A1
公开(公告)日：2023-01-19
申请号：US17860402
申请日：2022-07-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jun Song , Pengfei Wang
IPC: H02J7/00
Abstract: A power conversion circuit includes a first end of a first switch element coupled to an input power supply; a second end of the first switch element coupled to a first end of a first energy storage element, and a first end of a second switch element; a second end of the first energy storage element coupled to ground through a third switch element, and a first end of a fourth switch element; a second end of the second switch element coupled and connected to a battery; a first end of a second energy storage element coupled to two ends of the first energy storage element through a fifth switch element and a sixth switch element; a second end of the second energy storage element coupled to the battery; and a second end of the fourth switch element coupled to the battery.
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Patent Agency Ranking
公开(公告)号：US11362588B2
公开(公告)日：2022-06-14
申请号：US16697992
申请日：2019-11-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jun Song , Pengfei Wang
Abstract: A power conversion circuit includes a first switch branch, a second switch branch, a third switch branch, a filter branch, and a first capacitor. A first terminal of the first capacitor is connected to a power source through the first switch branch, and a second terminal of the first capacitor is grounded through the second switch branch. The filter branch includes a filter inductor and a filter capacitor. A first terminal of the filter inductor is connected to the first terminal of the first capacitor, and a second terminal of the filter inductor is connected to a first terminal of the filter capacitor. A second terminal of the filter capacitor is grounded, and the filter capacitor is connected in parallel with the load. The third switch branch is connected between the second terminal of the first capacitor and the second terminal of the filter inductor.
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公开(公告)号：US09673643B2
公开(公告)日：2017-06-06
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.
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7.发明授权公开(公告)号：US10826395B2
公开(公告)日：2020-11-03
申请号：US16539573
申请日：2019-08-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jun Song , Pengfei Wang
Abstract: A voltage converter includes a third switch element and a second energy storage element, and an energy storage circuit comprising a first switch element, a second switch element, and a first energy storage element. In a time period, the first switch element is in an on state, the second switch element and the third switch element are in an off state, and a voltage source coupled to the voltage converter charges the first energy storage element and the second energy storage element, and in a following time period, the first switch element is in an off state, the second switch element and the third switch element are in an on state, the first energy storage element and the second energy storage element discharge to a load coupled to the voltage converter.
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公开(公告)号：US20200099298A1
公开(公告)日：2020-03-26
申请号：US16697992
申请日：2019-11-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jun Song , Pengfei Wang
Abstract: A power conversion circuit includes a first switch branch, a second switch branch, a third switch branch, a filter branch, and a first capacitor. A first terminal of the first capacitor is connected to a power source through the first switch branch, and a second terminal of the first capacitor is grounded through the second switch branch. The filter branch includes a filter inductor and a filter capacitor. A first terminal of the filter inductor is connected to the first terminal of the first capacitor, and a second terminal of the filter inductor is connected to a first terminal of the filter capacitor. A second terminal of the filter capacitor is grounded, and the filter capacitor is connected in parallel with the load. The third switch branch is connected between the second terminal of the first capacitor and the second terminal of the filter inductor.
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公开(公告)号：US09306388B2
公开(公告)日：2016-04-05
申请号：US14446015
申请日：2014-07-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jianping Wang , Yang Yang , Pengfei Wang
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。
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