-
公开(公告)号：US20200072896A1
公开(公告)日：2020-03-05
申请号：US16364390
申请日：2019-03-26
发明人： Le CHU , Qiandeng LI , Yanhui FU , Qidong LOU
IPC分类号： G01R31/14 , G01R31/02 , G01R31/389 , G01R31/3835 , G01R27/14
摘要： Disclosed is an insulation detection method that includes: a first and second equivalent resistances are calculated; the less one of the first and second equivalent resistances is taken as a first insulation resistance, which is an insulation resistance of the high voltage circuit on the side where the battery pack locates relative to the reference potential terminal; when the first insulation resistance is normal, the switch unit is closed, and a second insulation resistance is calculated according to the first and second equivalent resistances, voltages of a first and second sampling point when the switch unit is closed; the second insulation resistance is an insulation resistance of the high voltage circuit on the side where the load locates relative to the reference potential terminal; the insulation state of the high voltage circuit on the side where the load locates is determined according to the second insulation resistance.
-
公开(公告)号：US20210199706A1
公开(公告)日：2021-07-01
申请号：US17204260
申请日：2021-03-17
发明人： Yuqun ZENG , Kai WU , Jirong HUO , Le CHU , Yanhui FU , Qiandeng LI
摘要： Disclosed are a load state detection circuit and method. A microcontroller is connected to a switch unit which is connected between a detecting power supply and a load to be tested. A voltage sampling point is formed at either terminal of the load to be tested, and the voltage sampling circuit is connected between the voltage sampling point and the microcontroller. The voltage sampling circuit is configured to sample a voltage at the voltage sampling point. The microcontroller is configured to connect the load to be tested and the detecting power supply by controlling the switch unit, and determine whether a fault exists in the load to be tested according to a received voltage at the voltage sampling point sampled by the voltage sampling circuit, before connecting the load to be tested with the drive power supply.
-
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.
-
公开(公告)号：US20200088799A1
公开(公告)日：2020-03-19
申请号：US16357563
申请日：2019-03-19
发明人： Yuqun ZENG , Kai WU , Guoxiu WU , Shushuai HU , Qiandeng LI , Yanhui FU
IPC分类号： G01R31/36 , H01M2/10 , H01M10/42 , G01R31/382
摘要： The present disclosure relates to a sampling assembly and a battery pack. The assembly comprises: a circuit board comprising a sampling unit; a first detector comprising a first and second connecting ends arranged at interval, wherein the first detector is connected to the circuit board via the first and second connecting ends to transmit information on first voltage between the first and second connecting ends to the circuit board, and the first detector is connectable in series to and between the two terminals to be detected; and a second detector located in a magnetic field generated by current flowing through the first detector and can generate information on second voltage according to the magnetic field, wherein the second detector comprises an output terminal and is connectable to the circuit board via the output terminal to transmit the information on second voltage to the sampling unit.
-
5.发明申请公开(公告)号：US20220018905A1
公开(公告)日：2022-01-20
申请号：US17490055
申请日：2021-09-30
发明人： Weiqiang LI , Yanhui FU , Xingchang Wang , Changjian Liu
摘要： The application provides a high-voltage interlocking device and method for detecting the high-voltage interlocking device. The high-voltage interlocking device includes a first resistance module; a first switch module, a second connection end of the first switch module being connected to a first reference potential through a third resistance module, and a control terminal of the first switch module being configured to receive a first driving signal, to enable the first switch module to be turned on or off; a second resistance module, another end of the second resistance module being connected to a second reference potential; a fourth resistance module; a second switch module, a second connection end of the second switch module being connected to a third reference potential through a fifth resistance module; a fault detection module, configured to determine a fault of the high-voltage component under detection according to a first detection signal.
-
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.
-
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.
-
8.发明申请公开(公告)号：US20220229112A1
公开(公告)日：2022-07-21
申请号：US17585326
申请日：2022-01-26
发明人： Yanhui FU , Le CHU , Changjian LIU
IPC分类号： G01R31/327 , G01R31/52 , G01R31/00 , G05B23/02
摘要： This application relates to the technical field of electronics, and discloses a detection circuit and a detection method of an electrical control device, and an electric vehicle. In some embodiments of this application, the detection circuit includes a drive circuit configured to detect an electrical control device. The drive circuit includes a drive power module and a low-side switch unit. The detection circuit includes: 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 the drive circuit of the electrical control device is faulty.
-
公开(公告)号：US20200274374A1
公开(公告)日：2020-08-27
申请号：US16799729
申请日：2020-02-24
发明人： Jianwei ZHUO , Le CHU , Jirong HUO , Yanhui FU , Qiandeng LI
IPC分类号： H02J7/00
摘要： The present disclosure discloses a detection circuit and method. The detection circuit comprises: a controller, a battery pack, a main positive switch module, a main negative switch module and at least one detection loop. The controller collects voltages of a positive electrode and a negative electrode of the battery pack and a voltage between external sides of the main positive switch module and the main negative switch module when turning on the main positive or negative switch module and after turning on any detection loop, and obtains resistance values of insulation resistors of the external sides according to resistance values of insulation resistors of internal sides of the main positive and negative switch module, as well as the voltages of the positive electrode and the negative electrode and the voltage between the external sides of the main positive switch module and the main negative switch module, which are collected twice.
-
公开(公告)号：US20200271726A1
公开(公告)日：2020-08-27
申请号：US16658081
申请日：2019-10-19
发明人： Jirong HUO , Yanhui FU , Le CHU , Qiandeng Li
IPC分类号： G01R31/36
摘要： The present application provides a high voltage detection circuit and method. The high voltage detection circuit include: a current adjustment module configured to be turned on or off to adjust a current in a high voltage circuit; a first detection module configured to provide a detection signal and transmit the detection signal to a processor module; the processor module configured to determine whether a positive switch unit or a negative switch unit is in malfunction according to a desired operation state of the positive switch unit, a desired operation state of the negative switch unit and the detection signal.
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.032 秒)
