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公开(公告)号：US11249123B2
公开(公告)日：2022-02-15
申请号：US17134564
申请日：2020-12-28
发明人： Zhimin Dan , Yizhen Hou , Weiping Sun , Meng Li , Wei Zhang , Teng Yu
IPC分类号： G01R27/20 , H01H47/00 , H01M10/42 , B60L50/60 , B60L3/00 , B60L3/12 , G01R31/327 , G01R31/00
摘要： Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method includes: controlling an insulation resistance obtaining circuit to output an AC signal; when both a main relay and a pre-charge relay are switched off, obtaining a first phase shift of the AC signal between two sampling points according to first collected electrical signals; obtaining an internal side insulation resistance of the main relay according to the first collected electrical signals and the first phase shift; controlling the pre-charge relay to be switched on; when the main relay is switched off and the pre-charge relay is switched on, obtaining a second phase shift of the AC signal between the two sampling points according to second collected electrical signals; and obtaining an external side insulation resistance of the main relay according to the second collected electrical signals and the second phase shift.
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公开(公告)号：US20210116486A1
公开(公告)日：2021-04-22
申请号：US17134564
申请日：2020-12-28
发明人： Zhimin DAN , Yizhen Hou , Weiping Sun , Meng Li , Wei Zhang , Teng Yu
摘要： Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method includes: controlling an insulation resistance obtaining circuit to output an AC signal; when both a main relay and a pre-charge relay are switched off, obtaining a first phase shift of the AC signal between two sampling points according to first collected electrical signals; obtaining an internal side insulation resistance of the main relay according to the first collected electrical signals and the first phase shift; controlling the pre-charge relay to be switched on; when the main relay is switched off and the pre-charge relay is switched on, obtaining a second phase shift of the AC signal between the two sampling points according to second collected electrical signals; and obtaining an external side insulation resistance of the main relay according to the second collected electrical signals and the second phase shift.
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公开(公告)号：US10996251B2
公开(公告)日：2021-05-04
申请号：US16233620
申请日：2018-12-27
发明人： Zhimin Dan , Yizhen Hou , Weiping Sun , Meng Li , Wei Zhang , Teng Yu
IPC分类号： G01R27/20 , H01H47/00 , H01M10/42 , B60L50/60 , B60L3/00 , B60L3/12 , G01R31/327 , G01R31/00
摘要： Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method includes steps of controlling the insulation resistance obtaining circuit to output a low-frequency AC signal; when both the main relay and the pre-charge relay are switched off, obtaining an internal side insulation resistance of the main relay according to the low-frequency AC signal; if the internal side insulation resistance of the main relay is normal, controlling the pre-charge relay to be switched on; and when the main relay is switched off and the pre-charge relay is switched on, obtaining an external side insulation resistance value of the main relay according to the low-frequency AC signal.
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公开(公告)号：US11262413B2
公开(公告)日：2022-03-01
申请号：US17051184
申请日：2020-01-15
发明人： Meng Li , Zhimin Dan , Weiping Sun , Yizhen Hou , Wei Zhang
IPC分类号： G01R31/389 , G01R31/364 , G01R31/36
摘要： The present application provides an insulation detection circuit, a method and a battery management system. The circuit includes: a first voltage dividing module, where, one end of the first voltage dividing module is connected to a positive electrode of a power battery to be detected, and the other end of the first voltage dividing module is connected to a first isolation module and a second voltage dividing module respectively; the second voltage dividing module, connected to a negative electrode of the power battery to be detected; the first isolation module, connected to one end of a sampling module; the sampling module, where, the other end of the sampling module is connected to one end of a signal generating module; the signal generating module, where, the other end of the signal generating module is connected to power ground; and the processing module.
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5.发明申请公开(公告)号：US20190235013A1
公开(公告)日：2019-08-01
申请号：US16233095
申请日：2018-12-27
发明人： Wei Zhang , Zhimin Dan , Yizhen Hou , Meng Li , Weiping Sun , Teng Yu
IPC分类号： G01R31/12 , G01R31/02 , G01R31/389 , G01R31/3835
CPC分类号： G01R31/1263 , G01R27/025 , G01R31/007 , G01R31/025 , G01R31/3835 , G01R31/389
摘要： The present disclosure provides a parameter selection method, apparatus, and computer readable storage medium for an insulation detection circuit. The parameter selection method includes determining an allowable injection frequency range of an AC signal to be injected, according to a predetermined resistance range of an insulation resistance of the power battery under test and a predetermined resistance calculation cycle of the insulation resistance; and selecting an output frequency of the signal generation module according to a lowest frequency to be generated by the signal generation module and the allowable injection frequency range.
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公开(公告)号：US12095301B2
公开(公告)日：2024-09-17
申请号：US17980860
申请日：2022-11-04
发明人： Shuyun Xiong , Yu Yan , Zhimin Dan , Zhanliang Li , Weiping Sun
CPC分类号： H02J7/00711 , B60L53/62 , B60L58/12 , H01M10/425 , H01M10/443 , H01M10/46 , H02J7/00036 , H02J7/0047 , H02J7/00712 , H02J7/007194 , B60L53/66 , H01M2010/4271 , H01M2220/20
摘要： A charging method, a battery management system for a traction battery and a charging pile are provided, which can effectively ensure normal charging of an electric vehicle. The charging method is used for charging a traction battery, and the method includes: determining, by the battery management system (BMS) of the traction battery, a pulse charging demand parameter according to a battery state parameter of the traction battery; and sending a pulse charging information to a charging pile by the BMS, the pulse charging information including the pulse charging demand parameter for indicating the charging pile to output a pulse current for charging the traction battery.
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7.发明申请公开(公告)号：US20220407338A1
公开(公告)日：2022-12-22
申请号：US17561239
申请日：2021-12-23
发明人： Zhanliang Li , Yu Yan , Zhimin Dan , Shuyun Xiong , Weiping Sun , Xiyang Zuo
IPC分类号： H02J7/00 , G01R31/382
摘要： The present application provides a charging control method and apparatus, a battery management system and a readable storage medium. The charging control method includes: obtaining a battery temperature and a battery state of charge; determining a pulse charging frequency according to the battery temperature, the battery state of charge and a pre-calibrated corresponding relationship; obtaining a preset waveform characteristic of a pulse charging waveform; where the waveform characteristic includes a ratio range of an area of a positive pulse waveform to an area of a negative pulse waveform in each pulse cycle of the pulse charging waveform; and generating a charging request according to the pulse charging frequency and the waveform characteristic and transmitting the charging request to a charging device. The method is used for improving charging stability and safety of a battery.
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8.发明授权公开(公告)号：US10895593B2
公开(公告)日：2021-01-19
申请号：US16233095
申请日：2018-12-27
发明人： Wei Zhang , Zhimin Dan , Yizhen Hou , Meng Li , Weiping Sun , Teng Yu
IPC分类号： G01R31/12 , G01R31/3835 , G01R27/02 , G01R31/00 , G01R31/50 , G01R31/389
摘要： The present disclosure provides a parameter selection method, apparatus, and computer readable storage medium for an insulation detection circuit. The parameter selection method includes determining an allowable injection frequency range of an AC signal to be injected, according to a predetermined resistance range of an insulation resistance of the power battery under test and a predetermined resistance calculation cycle of the insulation resistance; and selecting an output frequency of the signal generation module according to a lowest frequency to be generated by the signal generation module and the allowable injection frequency range.
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