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公开(公告)号：US11867748B2
公开(公告)日：2024-01-09
申请号：US17552348
申请日：2021-12-15
发明人： Baohai Du , Changjian Liu , Yanhui Fu
CPC分类号： G01R31/282 , B60L50/60 , G05B23/02 , B60L2240/40
摘要： This application discloses an electrical control device detection circuit, a detection method, and an electric vehicle. The detection circuit includes a drive circuit configured to detect an electrical control device. The drive circuit includes a drive power module, a high-side switch unit, and a low-side switch unit. The detection circuit includes: a detection power module, a first switch module, a second switch module, a first detection module, a second detection module, and a control module. The control module is configured to obtain an electrical signal at a third end of the first detection module and/or an electrical signal at a second end of the second detection module; and determine, based on the electrical signal at the third end of the first detection module and/or the electrical signal at the second end of the second detection module, whether a fault occurs in the drive circuit of the electrical control device.
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公开(公告)号：US20220107353A1
公开(公告)日：2022-04-07
申请号：US17552348
申请日：2021-12-15
发明人： Baohai Du , Changjian Liu , Yanhui Fu
摘要： This application discloses an electrical control device detection circuit, a detection method, and an electric vehicle. The detection circuit includes a drive circuit configured to detect an electrical control device. The drive circuit includes a drive power module, a high-side switch unit, and a low-side switch unit. The detection circuit includes: a detection power module, a first switch module, a second switch module, a first detection module, a second detection module, and a control module. The control module is configured to obtain an electrical signal at a third end of the first detection module and/or an electrical signal at a second end of the second detection module; and determine, based on the electrical signal at the third end of the first detection module and/or the electrical signal at the second end of the second detection module, whether a fault occurs in the drive circuit of the electrical control device.
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公开(公告)号：US11413965B2
公开(公告)日：2022-08-16
申请号：US17482455
申请日：2021-09-23
发明人： Yanhui Fu , Guoxiu Wu , Baohai Du , Changjian Liu
IPC分类号： B60L3/00 , H03K17/687
摘要： The application discloses a high voltage interlock circuit and a detection method thereof. The circuit comprises: a first switching module; a second switching module, comprising a first driving unit and a first switching unit arranged in isolation, the first switching unit is arranged between a second power supply and a second power ground; a third switching module, comprising a second driving unit and a second switching unit arranged in isolation; a fourth switching module, arranged between the fourth power supply and the first power ground; a controller. The embodiments of the application improve the accuracy of fault detection.
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公开(公告)号：US20220009351A1
公开(公告)日：2022-01-13
申请号：US17482455
申请日：2021-09-23
发明人： Yanhui FU , Guoxiu Wu , Baohai Du , Changjian Liu
IPC分类号： B60L3/00 , H03K17/687
摘要： The application discloses a high voltage interlock circuit and a detection method thereof. The circuit comprises: a first switching module; a second switching module, comprising a first driving unit and a first switching unit arranged in isolation, the first switching unit is arranged between a second power supply and a second power ground; a third switching module, comprising a second driving unit and a second switching unit arranged in isolation; a fourth switching module, arranged between the fourth power supply and the first power ground; a controller. The embodiments of the application improve the accuracy of fault detection.
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公开(公告)号：US11435389B2
公开(公告)日：2022-09-06
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：US10969419B2
公开(公告)日：2021-04-06
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： H01H31/12 , G01R31/12 , G01R31/3835 , G01R31/00 , B60L3/00
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：US11448683B2
公开(公告)日：2022-09-20
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： G01R31/00 , G01R31/14 , G01R31/389 , G01R31/396 , G01R31/3842 , G01R27/02 , G01R31/36 , H01M10/42 , H01M10/48
摘要： A circuit includes: an isolation power module, a first and second sampling modules, a first and second sampling points, 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：US11095132B2
公开(公告)日：2021-08-17
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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