-
公开(公告)号：US20200064410A1
公开(公告)日：2020-02-27
申请号：US16673666
申请日：2019-11-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wenping TONG , Kui ZHOU , Wencheng WANG
IPC: 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.
-
Patent Agency Ranking
公开(公告)号：US20180302007A1
公开(公告)日：2018-10-18
申请号：US16014862
申请日：2018-06-21
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Kui ZHOU , Yiping HUANG , Haoren SHAN
Abstract: Disclosed is a bidirectional conversion circuit, including a first bidirectional conductive network, a second bidirectional conductive network, a first switching transistor, a second switching transistor, a first diode, and a second diode, where the first bidirectional conductive network is connected in series to the first switching transistor to form a first branch, and a first end of the first branch is connected to a cathode of the first diode to form a first endpoint; and the second bidirectional conductive network is connected in series to the second switching transistor to form a second branch, and a second end of the second branch is connected to an anode of the second diode to form a third endpoint.
-
3.发明申请公开(公告)号：US20160049882A1
公开(公告)日：2016-02-18
申请号：US14924989
申请日：2015-10-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wenbin CHEN , Kui ZHOU
IPC: H02M7/06
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.
Abstract translation: 本发明提供一种同步整流转换器电路，包括三个变压器次级绕组，三个电流互感器，一个同步整流开关单元，二极管整流单元和一个控制单元。 三个电流互感器中的每一个包括初级绕组和二次绕组。 三个变压器次级绕组和三个电流互感器初级绕组交替地串联连接以形成第一三角形结构。 第一三角形结构的三个顶点连接到同步整流开关单元。 三个电流互感器次级绕组串联连接以形成第二三角形结构。 第二三角形结构的三个顶点连接到二极管整流单元。 二极管整流单元连接到控制单元，同步整流开关单元连接到控制单元。 本发明实现了精确控制同步整流电路的通断状态的目的。
-
公开(公告)号：US20170187302A1
公开(公告)日：2017-06-29
申请号：US15460534
申请日：2017-03-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wenbin CHEN , Kui ZHOU
IPC: H02M7/06
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.
-
公开(公告)号：US20190267827A1
公开(公告)日：2019-08-29
申请号：US16411635
申请日：2019-05-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wentao HE , Kui ZHOU , Haoren SHAN
Abstract: The present invention provides a charging and discharging apparatus, including an alternating current charging and discharging unit, a bidirectional alternating current/direct current conversion unit, a bidirectional direct current/direct current isolated conversion unit, and a first energy storage unit that are sequentially connected in series, and further including at least one switch unit, a direct current/direct current isolated conversion unit, and a second energy storage unit. A first end of each switch unit is connected to the bidirectional direct current/direct current isolated conversion unit, a second end of each switch unit is connected to a first end of the direct current/direct current isolated conversion unit, and a second end of the direct current/direct current isolated conversion unit is connected to the second energy storage unit.
-
公开(公告)号：US20190214832A1
公开(公告)日：2019-07-11
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.
-
-
-
-
-
Search Results
6
records
(took 0.018 seconds)
