公开(公告)号：US11927639B2

公开(公告)日：2024-03-12

申请号：US17490055

申请日：2021-09-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Weiqiang Li ,  Yanhui Fu ,  Xingchang Wang ,  Changjian Liu

IPC: G01R31/00 ,  B60R16/03 ,  G01R31/36 ,  G01R31/52

CPC classification number: G01R31/36 ,  B60R16/03 ,  G01R31/006 ,  G01R31/52

Abstract: 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 underdetection according to a first detection signal.

公开(公告)号：US20220018905A1

公开(公告)日：2022-01-20

申请号：US17490055

申请日：2021-09-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Weiqiang LI ,  Yanhui FU ,  Xingchang Wang ,  Changjian Liu

IPC: G01R31/36 ,  B60R16/03 ,  G01R31/52 ,  G01R31/00

Abstract: 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：US20240047988A1

公开(公告)日：2024-02-08

申请号：US18489021

申请日：2023-10-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fangyou Lu ,  Hang Ma ,  Wei Tian ,  Xingchang Wang ,  Zhenhui Huang

IPC: H02J7/00

CPC classification number: H02J7/007182 ,  H02J7/0048 ,  H02J7/0014

Abstract: Provided are a circuit control method, a battery controller, a battery management system, a battery, an electrical apparatus, and a vehicle. The circuit control method includes: acquiring an apparatus wake-up signal; determining whether a power source terminal voltage of a charging circuit of a battery on the apparatus is greater than a first threshold and whether a change rate in a first time length is less than a second threshold, wherein the charging circuit is a circuit connecting the battery on the apparatus and a generator, and the power source terminal voltage is an output voltage of the generator; and issuing a first instruction when the power source terminal voltage of the charging circuit of the battery on the apparatus is greater than the first threshold and the change rate in the first time length is less than the second threshold, so that the charging circuit is turned on.

公开(公告)号：US20220291295A1

公开(公告)日：2022-09-15

申请号：US17828079

申请日：2022-05-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qi Xiao ,  Yanhui Fu ,  Xingchang Wang ,  Changjian Liu

IPC: G01R31/52 ,  G01R19/10

Abstract: The application provides a high voltage interlock circuit and a detection method thereof, the high voltage interlock circuit comprises: a signal isolation conversion module, and a fault detection module. The high voltage interlock device and the detection method thereof provided by the embodiments of the application can avoid the damage to the fault detection module caused by large external voltage, and improve the safety of the high voltage interlock device.

公开(公告)号：US12009682B2

公开(公告)日：2024-06-11

申请号：US17479505

申请日：2021-09-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xu Zhang ,  Hang Ma ,  Xingchang Wang

IPC: H02J7/00 ,  B60L3/00 ,  B60L3/12 ,  B60L58/12 ,  G01R31/3835 ,  H02J7/34

CPC classification number: H02J7/0047 ,  B60L3/0046 ,  B60L3/12 ,  B60L58/12 ,  G01R31/3835 ,  H02J7/007182 ,  H02J7/345

Abstract: A load access detection method, a switch circuit, and a battery management system, relating to the field of circuit technology. The load access detection method includes: detecting a voltage at a first detection point; detecting a voltage at a second detection point; if a voltage difference between the voltage at the first detection point and the voltage at the second detection point is less than or equal to a preset voltage threshold, controlling a switch circuit to enter a pre-charging mode, and pre-charging a load capacitor in the load circuit through the battery pack, where a charging current of the switch circuit in the pre-charging mode is less than a charging current of the switch circuit in a charging mode.

公开(公告)号：US11973364B2

公开(公告)日：2024-04-30

申请号：US18489021

申请日：2023-10-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fangyou Lu ,  Hang Ma ,  Wei Tian ,  Xingchang Wang ,  Zhenhui Huang

IPC: H02J7/00

CPC classification number: H02J7/007182 ,  H02J7/0014 ,  H02J7/0048

Abstract: Provided are a circuit control method, a battery controller, a battery management system, a battery, an electrical apparatus, and a vehicle. The circuit control method includes: acquiring an apparatus wake-up signal; determining whether a power source terminal voltage of a charging circuit of a battery on the apparatus is greater than a first threshold and whether a change rate in a first time length is less than a second threshold, wherein the charging circuit is a circuit connecting the battery on the apparatus and a generator, and the power source terminal voltage is an output voltage of the generator; and issuing a first instruction when the power source terminal voltage of the charging circuit of the battery on the apparatus is greater than the first threshold and the change rate in the first time length is less than the second threshold, so that the charging circuit is turned on.

公开(公告)号：US20230216094A1

公开(公告)日：2023-07-06

申请号：US18046146

申请日：2022-10-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingchang Wang ,  Wei Tian ,  Fangyou Lu

IPC: H01M10/42 ,  H02J7/00 ,  B60R16/033 ,  H01M10/48 ,  H01M10/44 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H01M10/6572 ,  H01M50/583

CPC classification number: H01M10/425 ,  H02J7/007182 ,  H02J7/0034 ,  H02J7/007194 ,  H02J7/00304 ,  B60R16/033 ,  H01M10/486 ,  H01M10/44 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H01M10/6572 ,  H01M50/583 ,  H01M2220/20 ,  H01M2010/4271 ,  H01M2200/103

Abstract: A charge-discharge control circuit, method, device and a storage medium are provided. In some embodiments, the circuit includes: a starting power supply; and a main positive switch unit. In those embodiments, a first terminal of the main positive switch unit is connected to the starting power supply, and a second terminal of the main positive switch unit is connected to a generator of the vehicle and a load of the vehicle. The main positive switch unit is configured to interrupt a current in a first current direction, which is a current direction when the generator charges the starting power supply. The circuit also includes a battery management module configured to detect a voltage of the starting power supply, and control the main positive switch unit to interrupt the current in the first current direction when the voltage of the starting power supply reaches a preset voltage threshold.

公开(公告)号：US11549999B2

公开(公告)日：2023-01-10

申请号：US17828079

申请日：2022-05-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qi Xiao ,  Yanhui Fu ,  Xingchang Wang ,  Changjian Liu

IPC: G01R31/52 ,  G01R19/10 ,  B60L3/00

Abstract: The application provides a high voltage interlock circuit and a detection method thereof, the high voltage interlock circuit comprises: a signal isolation conversion module, and a fault detection module. The high voltage interlock device and the detection method thereof provided by the embodiments of the application can avoid the damage to the fault detection module caused by large external voltage, and improve the safety of the high voltage interlock device.