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公开(公告)号：US11322936B2
公开(公告)日：2022-05-03
申请号：US16672064
申请日：2019-11-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Kui Zhou , Boning Huang , Wenping Tong
Abstract: Disclosed herein is a distributed battery pack power supply system, a charging control method, and a discharging control method, where a plurality of battery packs or battery groups is directly coupled in parallel or indirectly coupled in parallel as required using a charging/discharging circuit of the distributed battery pack power supply system and a corresponding control policy. A distributed battery includes a plurality of battery packs, and further includes a controller, a bidirectional voltage transformation circuit, a bypass circuit, a charging circuit, and a charging input end. Each battery pack corresponds to one bypass circuit and one bidirectional voltage transformation circuit.
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公开(公告)号：US11260759B2
公开(公告)日：2022-03-01
申请号：US16366633
申请日：2019-03-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Kui Zhou , Wentao He , Xiaokang Liu
IPC: B60L50/60 , B60L53/14 , H02J7/00 , H01M10/42 , B60L53/30 , H02J7/34 , B60L53/62 , B60L53/66 , B60L53/16 , B60L53/18 , B60L53/20
Abstract: An electric vehicle that includes a battery pack, a direct current socket, and a controller and a charging method for charging between electric vehicles, where in a process in which the direct current socket is coupled to an alternating current socket of another electric vehicle using a charge/discharge cable, the battery pack is controlled based on a charging request of the other electric vehicle to charge the other electric vehicle. Hence, charging between electric vehicles can be conveniently implemented.
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公开(公告)号：US11243259B2
公开(公告)日：2022-02-08
申请号：US16673666
申请日：2019-11-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wenping Tong , Kui Zhou , Wencheng Wang
IPC: G06F11/30 , G01R31/389 , G01R31/385 , G01R31/36
Abstract: An insulation resistance detection circuit, detection method, and detection apparatus are provided. The circuit includes an alternating-current signal source, a resonant cavity, a first resistor, a second resistor, a third resistor, a fourth resistor, a first switch, and a second switch. The alternating-current signal source is sequentially connected to the first resistor, the resonant cavity, the first switch, the second resistor, and the third resistor in series to form a loop. The first resistor is connected to a positive electrode of the alternating-current signal source, and the third resistor is connected to a negative electrode of the alternating-current signal source. One end of the second switch is connected to a negative electrode of a to-be-detected battery, the other end of the second switch is connected to the fourth resistor, and the other end of the fourth resistor is connected to ground.
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公开(公告)号：US20190214833A1
公开(公告)日：2019-07-11
申请号：US16353539
申请日：2019-03-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yingtao Li , Kui Zhou , Guanghui Zhang , Pinghua Wang
IPC: H02J7/00 , H01M10/44 , G01R31/382 , G01R19/165
Abstract: A fast charging method, a fast charging system, and a fast charging apparatus for a series battery pack, where the fast charging method including obtaining charge parameters of battery units in a series battery pack, determining, based on the charge parameters, whether there is a differentiated battery unit in the series battery pack, where the differentiated battery unit is a battery unit whose charge parameter is different from a charge parameter of the rest battery units in the series battery pack, and changing the battery units in the series battery pack to a parallel connection when there is a differentiated battery unit in the series battery pack, and performing parallel charging on the battery units. Hence, the fast charging method for a series battery pack can effectively shorten a charging time.
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公开(公告)号：US09780687B2
公开(公告)日：2017-10-03
申请号：US14924989
申请日：2015-10-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wenbin Chen , Kui Zhou
CPC classification number: H02M7/06 , H02M3/33592 , H02M2007/2195 , Y02B70/1408 , Y02B70/1433 , Y02B70/1441 , Y02B70/1475 , Y02P80/112
Abstract: The present invention provides a synchronous rectification converter circuit, including three transformer secondary-windings, three current transformer, a synchronous rectification switching unit, a diode rectification unit, and a control unit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure. Three vertices of the first triangular structure are connected to the synchronous rectification switching unit. The three current transformer secondary-windings are connected in series to form a second triangular structure. Three vertices of the second triangular structure are connected to the diode rectification unit. The diode rectification unit is connected to the control unit and the synchronous rectification switching unit is connected to the control unit. The present invention achieves a purpose of precisely controlling the on-off state of the synchronous rectification circuit.
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Patent Agency Ranking
公开(公告)号：US10826305B2
公开(公告)日：2020-11-03
申请号：US16351517
申请日：2019-03-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yingtao Li , Kui Zhou , Qiang Wang , Guanghui Zhang , Pinghua Wang
Abstract: A fast charging method for a parallel battery pack is provided, including: obtaining a maximum charging current allowed by a charging trunk and a charging current required for charging a parallel battery pack; comparing the charging current required for charging the parallel battery pack with the maximum charging current allowed by the charging trunk; if the charging current required for charging the parallel battery pack is less than or equal to the maximum charging current allowed by the charging trunk, performing parallel charging on battery units; or if the charging current required for charging the parallel battery pack is greater than the maximum charging current allowed by the charging trunk, changing some or all of battery units in the parallel battery pack to a series connection, and performing series charging on the battery units. The fast charging method for a parallel battery pack can effectively shorten a charging time.
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公开(公告)号：US20190217732A1
公开(公告)日：2019-07-18
申请号：US16366633
申请日：2019-03-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Kui Zhou , Wentao He , Xiaokang Liu
CPC classification number: B60L53/16 , B60L50/50 , B60L53/18 , B60L53/20 , B60L53/62 , B60L53/66 , B60L2210/10 , B60Y2200/91 , B60Y2300/91 , H02J7/00 , Y02T10/7005
Abstract: An electric vehicle that includes a battery pack, a direct current socket, and a controller and a charging method for charging between electric vehicles, where in a process in which the direct current socket is coupled to an alternating current socket of another electric vehicle using a charge/discharge cable, the battery pack is controlled based on a charging request of the other electric vehicle to charge the other electric vehicle. Hence, charging between electric vehicles can be conveniently implemented.
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公开(公告)号：US20180269795A1
公开(公告)日：2018-09-20
申请号：US15976874
申请日：2018-05-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Kui Zhou , Xijun Zhang , Grover Victor Torrico-Bascopé
CPC classification number: H02M3/33584 , H02M1/14 , H02M3/285 , H02M3/33507 , H02M3/33592 , H02M5/271 , H02M7/4826 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
Abstract: The present disclosure provide a bidirectional resonant conversion circuit and a converter. The bidirectional resonant conversion circuit includes a primary capacitor, three primary side bridge arms, three three-port resonant cavities, three transformers, three secondary side bridge arms, and a secondary capacitor. A first port of each three-port resonant cavity is connected to a corresponding primary side bridge arm, a second port of each three-port resonant cavity is connected to a ground terminal of a corresponding primary side bridge arm, and a third port of each three-port resonant cavity is connected to a corresponding transformer. Two ends of each secondary side bridge arm are respectively connected to two ends of the secondary capacitor, and each transformer is connected to a corresponding secondary side bridge arm.
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公开(公告)号：US10008955B2
公开(公告)日：2018-06-26
申请号：US15460534
申请日：2017-03-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wenbin Chen , Kui Zhou
CPC classification number: H02M7/06 , H02M3/33592 , H02M2007/2195 , Y02B70/1408 , Y02B70/1433 , Y02B70/1441 , Y02B70/1475 , Y02P80/112
Abstract: A synchronous rectification converter circuit is provided, including three transformer secondary-windings, three current transformers, a synchronous rectification switching circuit, a diode rectification circuit, and a control circuit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure circuit. Three vertices of the first triangular structure circuit are connected to the synchronous rectification switching circuit. The three current transformer secondary-windings are connected in series to form a second triangular structure circuit. Three vertices of the second triangular structure circuit are connected to the diode rectification circuit. The diode rectification circuit is connected to the control circuit and the synchronous rectification switching circuit is connected to the control circuit.
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公开(公告)号：US10819124B2
公开(公告)日：2020-10-27
申请号：US16353539
申请日：2019-03-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yingtao Li , Kui Zhou , Guanghui Zhang , Pinghua Wang
IPC: H02J7/00 , G01R31/382 , G01R19/165 , H01M10/44
Abstract: A fast charging method, a fast charging system, and a fast charging apparatus for a series battery pack, where the fast charging method including obtaining charge parameters of battery units in a series battery pack, determining, based on the charge parameters, whether there is a differentiated battery unit in the series battery pack, where the differentiated battery unit is a battery unit whose charge parameter is different from a charge parameter of the rest battery units in the series battery pack, and changing the battery units in the series battery pack to a parallel connection when there is a differentiated battery unit in the series battery pack, and performing parallel charging on the battery units. Hence, the fast charging method for a series battery pack can effectively shorten a charging time.
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