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公开(公告)号：US11171569B2
公开(公告)日：2021-11-09
申请号：US17137411
申请日：2020-12-30
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Liansong Wang , Zhimin Dan , Changjian Liu , Fupeng Cai , Fuming Ye
Abstract: The present application discloses a wake-up method and wake-up system for a battery management system. The method may include converting, by a conversion unit, a low-voltage power signal detected at a low-voltage input port into a high-voltage wake-up signal, and receiving, by a high-voltage control module, a working voltage provided by a power battery pack under control of the high-voltage wake-up signal; controlling, by the high-voltage control module, the high-voltage transmission module to be turned on, providing the working voltage to a synchronous rectifying module by the turned-on high-voltage transmission module, and converting high-voltage electric energy provided by the power battery pack into low-voltage electric energy; and transmitting, under control of the synchronous rectifying module, the low-voltage electric energy to the low-voltage controller, and waking up the battery management system by the low-voltage controller.
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Patent Agency Ranking
公开(公告)号：US11852670B2
公开(公告)日：2023-12-26
申请号：US17557285
申请日：2021-12-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Meng Li , Changjian Liu , Fuming Ye , Fangjie Zhou , Liansong Wang , Lidan Yan
CPC classification number: G01R31/14 , B60L58/10 , G01R27/025 , G01R31/3648 , G01R31/382 , H01M10/425 , H01M2010/4271 , H01M2220/20
Abstract: Embodiments of this application relate to the monitoring field, and disclose a method for monitoring an insulation monitoring circuit and a battery management system. In some embodiments of this application, the method for monitoring an insulation monitoring circuit includes: in a state in which a first switch and a second switch are closed and a third switch is open, obtaining a first electrical signal detected by a second monitoring module; and based on the first electrical signal and a voltage reference value between a positive electrode of a battery pack and a negative electrode of the battery pack, determining whether an insulation monitoring circuit is faulty; or obtaining a second electrical signal detected by a first monitoring module and a third electrical signal detected by a third monitoring module, and based on the second electrical signal and the third electrical signal, determining whether the insulation monitoring circuit is faulty.
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公开(公告)号：US20210119549A1
公开(公告)日：2021-04-22
申请号：US17137411
申请日：2020-12-30
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Liansong Wang , Zhimin Dan , Changjian Liu , Fupeng Cai , Fuming Ye
Abstract: The present application discloses a wake-up method and wake-up system for a battery management system. The method may include converting, by a conversion unit, a low-voltage power signal detected at a low-voltage input port into a high-voltage wake-up signal, and receiving, by a high-voltage control module, a working voltage provided by a power battery pack under control of the high-voltage wake-up signal; controlling, by the high-voltage control module, the high-voltage transmission module to be turned on, providing the working voltage to a synchronous rectifying module by the turned-on high-voltage transmission module, and converting high-voltage electric energy provided by the power battery pack into low-voltage electric energy; and transmitting, under control of the synchronous rectifying module, the low-voltage electric energy to the low-voltage controller, and waking up the battery management system by the low-voltage controller.
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公开(公告)号：US20210119547A1
公开(公告)日：2021-04-22
申请号：US17137165
申请日：2020-12-29
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Liansong Wang , Zhimin Dan , Yizhen Hou , Fangjie Zhou , Changjian Liu
Abstract: The present application discloses a system and method for providing a constant power source. The system includes: a main control module configured to receive a wake-up time and send the wake-up time to a timer device; a timer power supply module configured to supply power to the timer device according to electric energy in a high-voltage battery pack; a high-voltage power supply module configured to supply power to a power conversion module according to the electric energy in the high-voltage battery pack; the timer device configured to set a wake-up clock according to the wake-up time, start timing when a battery management system (BMS) enters into sleep, and send a discharge instruction to the high-voltage battery pack when the timing reaches the wake-up time; the power conversion module configured to convert high-voltage electric energy output from the high-voltage battery pack into low-voltage electric energy and supply power to the BMS.
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公开(公告)号：US11303215B2
公开(公告)日：2022-04-12
申请号：US17137165
申请日：2020-12-29
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Liansong Wang , Zhimin Dan , Yizhen Hou , Fangjie Zhou , Changjian Liu
Abstract: The present application discloses a system and method for providing a constant power source. The system includes: a main control module configured to receive a wake-up time and send the wake-up time to a timer device; a timer power supply module configured to supply power to the timer device according to electric energy in a high-voltage battery pack; a high-voltage power supply module configured to supply power to a power conversion module according to the electric energy in the high-voltage battery pack; the timer device configured to set a wake-up clock according to the wake-up time, start timing when a battery management system (BMS) enters into sleep, and send a discharge instruction to the high-voltage battery pack when the timing reaches the wake-up time; the power conversion module configured to convert high-voltage electric energy output from the high-voltage battery pack into low-voltage electric energy and supply power to the BMS.
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公开(公告)号：US11120958B2
公开(公告)日：2021-09-14
申请号：US16981260
申请日：2019-11-15
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Delong Shi , Yizhen Hou , Wei Zhang , Liansong Wang
Abstract: The embodiments of the present disclosure disclose a relay holding circuit and a battery management system. the relay holding circuit may include: a high-voltage isolated power source, a power source driving module, and a microprocessor of a battery management system; the high-voltage isolated power source may be respectively connected to two electrodes of a battery pack, an output terminal of the power source driving module, the microprocessor, and a first terminal of a first switching device; an input terminal of the power source driving module may be connected to the microprocessor; the microprocessor may be further connected to a primary battery, the microprocessor may output a low-level signal to the power source driving module when the primary battery supplies power abnormally.
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