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

IPC: H01M10/42 ,  H01M10/44 ,  H02J7/00

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.

公开(公告)号：US10928429B2

公开(公告)日：2021-02-23

申请号：US16290974

申请日：2019-03-04

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhiwei Yan ,  Qiandeng Li

IPC: G01R27/14 ,  G01R31/52 ,  G01R31/12 ,  G01R27/02

Abstract: The present disclosure provides an insulation detection device and method for an energy storage system. The insulation detection device includes a positive switching device, a negative switching device, a sampling unit, a reference voltage terminal and a processor. The sampling unit is configured to collect a positive sampled signal on the energy storage device when the positive switching device and the negative switching device are in a first switching state, and collect a negative sampled signal on the energy storage device when the positive switching device and the negative switching device are in a second switching state; and the processor is configured to determine a positive insulation resistance value and a negative insulation resistance value of the energy storage device according to the positive sampled signal and the negative sampled signal.

公开(公告)号：US11189144B2

公开(公告)日：2021-11-30

申请号：US17104560

申请日：2020-11-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhiwei Yan ,  Fangjie Zhou ,  Fuming Ye

IPC: G08B17/10 ,  G01K3/00 ,  H03K19/20 ,  H03M1/12

Abstract: A smoke alarm system comprises a smoke alarm, a temperature detector, a first sampling circuit, a second sampling circuit and an analysis module; a first terminal of the first sampling circuit is connected to the smoke alarm, and a second terminal is connected to a first input terminal of the analysis module; the first sampling circuit is used for sampling from the smoke alarm to obtain a smoke sample value which is then output to the analysis module; a first terminal of the second sampling circuit is connected to the temperature detector, and a second terminal is connected to a second input terminal of the analysis module; the second sampling circuit is used for sampling from the temperature detector to obtain a temperature sample value which is then output to the analysis module; and the analysis module determines whether a smoke alarm signal is generated.

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

IPC: H01M10/42 ,  H01M10/44 ,  H02J7/00

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.