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公开(公告)号：US20220018885A1
公开(公告)日：2022-01-20
申请号：US17491110
申请日：2021-09-30
摘要： Embodiments of this application relate to the technical field of electronics, and disclose an electrical control device detection circuit, a detection method, and an electric vehicle. In some embodiments of this application, the detection circuit is configured to detect a drive circuit of the electrical control device. The drive circuit includes a high-side switch unit. The detection circuit includes a first detection module and a control module. A first end of the first detection module is connected to a first end of the electrical control device. A second end of the first detection module is connected to a second end of the electrical control device. A third end of the first detection module is connected to the control module.
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公开(公告)号：US20200225275A1
公开(公告)日：2020-07-16
申请号：US16577350
申请日：2019-09-20
发明人： Baohai DU , Guoxiu WU , Weiqiang LI , Qiandeng LI
IPC分类号： G01R31/12 , G01R31/3835 , G01R31/00
摘要： The present disclosure provides an insulation detection circuit, a detection method and a battery management system. The insulation detection circuit includes an isolated power module, first positive and negative sampling modules, second positive and negative sampling modules, and a processor. A first end of the second positive sampling module is connected to a positive electrode of the isolated power module and a second end of the positive switch module, a second end of the second positive sampling module is connected to a second reference voltage terminal; a first end of the second negative sampling module is connected to the second reference voltage terminal, a second end of the second negative sampling module is respectively connected to a negative electrode of the isolated power module and a second end of the negative switch module; and the processor is connected to sampling points.
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公开(公告)号：US20200274369A1
公开(公告)日：2020-08-27
申请号：US16588775
申请日：2019-09-30
发明人： Huixiu LUO , Baohai DU , Wei ZHANG , Qiandeng LI
摘要： Embodiments of the present disclosure disclose a battery management system. In the system, a first microcontroller is connected to a second microcontroller; a battery monitoring module is configured to monitor a state of the battery pack and transmit the state of the battery pack to the first and the second microcontroller respectively via a state signal of the battery pack, and control the state of the battery pack according to a control instruction from the first and the second microcontroller; a sampling control module is configured to detect the state of a high voltage loop of the battery pack, and transmit the state of the high voltage loop to the first and the second microcontroller respectively via a state signal of the high voltage loop of the battery pack, and control the state of the high voltage loop according to a control instruction from the first and the second microcontroller.
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公开(公告)号：US20210231726A1
公开(公告)日：2021-07-29
申请号：US17051447
申请日：2020-01-15
发明人： Baohai DU , Le CHU , Jiayu YU , Qiandeng LI
IPC分类号： G01R31/14 , G01R31/389 , G01R31/396 , G01R31/36 , G01R31/3842 , G01R27/02 , H01M10/48 , H01M10/42
摘要： A circuit includes: an isolation power module, a first sampling module, a first sampling point, a second sampling module, a second sampling point, a processor. A first terminal of the first sampling module is connected to a positive electrode of a battery pack and first terminal of a positive switch module, a second terminal of the first sampling module is connected to a negative electrode of the battery pack and a first terminal of the negative switch module, a third terminal of the first sampling module is connected to a first reference voltage end; a first terminal of the second sampling module is connected to a second terminal of the positive switch module and a positive electrode of the isolation power module, a second terminal of the second sampling module is connected to a second terminal of the negative switch module and a negative electrode of the isolation power module.
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公开(公告)号：US20200235586A1
公开(公告)日：2020-07-23
申请号：US16587126
申请日：2019-09-30
发明人： Dachun YANG , Baohai DU , Yanhui FU , Qiandeng LI
摘要： Embodiments of the present disclosure relate to the field of battery technologies, and disclose a pre-charging circuit for a high voltage battery pack and a pre-charging method therefor. In some embodiments of the present disclosure, during a charging process, a control module switches on a charging switching module and switches off a charging pre-charging module after determining that a voltage at the first end of the charging switching module and a voltage at the second end of the charging switching module comply with a first constraint relationship; during a discharging process, the control module switches on the main positive switching module and switches off the main positive pre-charging module after determining that a voltage at the first end of the main positive switching module and a voltage at the second end of the main positive switching module comply with a second constraint relationship.
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