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公开(公告)号：US10763552B2
公开(公告)日：2020-09-01
申请号：US16245198
申请日：2019-01-10
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Meng Li , Yizhen Hou , Wei Zhang , Lidan Yan
IPC: G01R31/382 , H01M10/42 , G01R27/02 , G01R31/3835 , G01R31/50 , G01R31/396 , H01M10/48 , G01R31/12
Abstract: The present disclosure provides an insulation detection circuit and method, and a battery management system. The circuit includes a first isolation module, a voltage division module, a signal generation module, first and second sampling points and a processor. A first end of the first isolation module is connected to a power battery, and a second end of the first isolation module is connected to the second sampling point. The signal generation module is connected to the first sampling point and configured to inject an AC signal into the power battery and provide the first sampling point with a first sampled signal. A first end of the voltage division module is connected to the first sampling point, and a second end of the voltage division module is connected to the second sampling point. The processor is configured to calculate an insulation resistance of the power battery.
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Patent Agency Ranking
公开(公告)号：US10890711B2
公开(公告)日：2021-01-12
申请号：US16940252
申请日：2020-07-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Meng Li , Yizhen Hou , Wei Zhang , Lidan Yan
Abstract: The present disclosure provides an insulation detection circuit and method, and a battery management system. The circuit includes a first isolation module, a voltage division module, a signal generation module, first and second sampling points and a processor. A first end of the first isolation module is connected to a power battery, and a second end of the first isolation module is connected to the second sampling point. The signal generation module is connected to the first sampling point and configured to inject an AC signal into the power battery and provide the first sampling point with a first sampled signal. A first end of the voltage division module is connected to the first sampling point, and a second end of the voltage division module is connected to the second sampling point. The processor is configured to calculate an insulation resistance of the power battery.
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公开(公告)号：US20210119271A1
公开(公告)日：2021-04-22
申请号：US17134020
申请日：2020-12-24
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin He , Zhiwei Yan , Fupeng Cai , Lidan Yan , Fuming Ye , Fangjie Zhou
Abstract: Embodiments of this application relate to the field of circuit technologies. A wake-up circuit and a rechargeable device are disclosed. The wake-up circuit includes an input control module, a drive module, and an output control module. The input control module, the drive module, and the output control module each are connected to an auxiliary power supply. The input control module is configured to output a first level signal when an external voltage signal is received. The drive module is configured to, when the first level signal is received, output a second level signal that lasts for a first preset time. The output control module is configured to, when the second level signal is received, output a wake-up signal that lasts for the first preset time to a battery management system. According to this application, the wake-up circuit and the BMS consume less power of the auxiliary power supply.
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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：US11824170B2
公开(公告)日：2023-11-21
申请号：US17134020
申请日：2020-12-24
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xin He , Zhiwei Yan , Fupeng Cai , Lidan Yan , Fuming Ye , Fangjie Zhou
CPC classification number: H01M10/4257 , H01M10/446 , H02J7/0031 , H01M2010/4278
Abstract: Embodiments of this application relate to the field of circuit technologies. A wake-up circuit and a rechargeable device are disclosed. The wake-up circuit includes an input control module, a drive module, and an output control module. The input control module, the drive module, and the output control module each are connected to an auxiliary power supply. The input control module is configured to output a first level signal when an external voltage signal is received. The drive module is configured to, when the first level signal is received, output a second level signal that lasts for a first preset time. The output control module is configured to, when the second level signal is received, output a wake-up signal that lasts for the first preset time to a battery management system. According to this application, the wake-up circuit and the BMS consume less power of the auxiliary power supply.
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公开(公告)号：US20190237815A1
公开(公告)日：2019-08-01
申请号：US16245198
申请日：2019-01-10
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin DAN , Meng Li , Yizhen Hou , Wei Zhang , Lidan Yan
IPC: H01M10/42 , G01R27/02 , G01R31/382 , H01M10/48 , G01R31/396
Abstract: The present disclosure provides an insulation detection circuit and method, and a battery management system. The circuit includes a first isolation module, a voltage division module, a signal generation module, first and second sampling points and a processor. A first end of the first isolation module is connected to a power battery, and a second end of the first isolation module is connected to the second sampling point. The signal generation module is connected to the first sampling point and configured to inject an AC signal into the power battery and provide the first sampling point with a first sampled signal. A first end of the voltage division module is connected to the first sampling point, and a second end of the voltage division module is connected to the second sampling point. The processor is configured to calculate an insulation resistance of the power battery.
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