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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：US20200062140A1
公开(公告)日：2020-02-27
申请号：US16672064
申请日：2019-11-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Kui Zhou , Boning Huang , Wenping Tong
Abstract: 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：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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