公开(公告)号：US20200274289A1

公开(公告)日：2020-08-27

申请号：US16798365

申请日：2020-02-22

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jinglin Li ,  Jianwei Zhuo ,  Changjian Liu ,  Qiandeng Li

IPC: H01R13/53 ,  G01R31/316 ,  B60L50/16 ,  H01R13/70 ,  H01R13/66

Abstract: The disclosure provides high voltage interlock circuit and detection method. The circuit comprises: a power module, a positive electrode of the power module being connected to one end of a current generating module; the current generating module, the other end of the current generating module being connected to a first terminal of a high voltage component module to inject a constant DC current into the high voltage component module; a first voltage dividing module, one end of the first voltage dividing module being connected to a second terminal of the high voltage component module, and the other end of the first voltage dividing module being connected to a negative electrode of the power module and a power ground; and a processing module to determine a fault of the high voltage component module based on a first voltage collected from the second terminal of the high voltage component module.

公开(公告)号：US11320481B2

公开(公告)日：2022-05-03

申请号：US16798365

申请日：2020-02-22

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jinglin Li ,  Jianwei Zhuo ,  Changjian Liu ,  Qiandeng Li

IPC: G01R31/00 ,  G01R31/316 ,  B60L50/16

Abstract: The disclosure provides high voltage interlock circuit and detection method. The circuit comprises: a power module, a positive electrode of the power module being connected to one end of a current generating module; the current generating module, the other end of the current generating module being connected to a first terminal of a high voltage component module to inject a constant DC current into the high voltage component module; a first voltage dividing module, one end of the first voltage dividing module being connected to a second terminal of the high voltage component module, and the other end of the first voltage dividing module being connected to a negative electrode of the power module and a power ground; and a processing module to determine a fault of the high voltage component module based on a first voltage collected from the second terminal of the high voltage component module.

公开(公告)号：US11283116B2

公开(公告)日：2022-03-22

申请号：US16965414

申请日：2019-11-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yu Liu ,  Jinglin Li ,  Qiandeng Li

IPC: H01M10/633 ,  H01M10/615

Abstract: The embodiments of the present disclosure disclose a battery heating system and method, and relate to the field of batteries. The battery heating system may include: a temperature sampling module configured to collect a target sampling temperature; a control module configured to control a heating module to enter a first heating mode when the target sampling temperature is not lower than a preset expected heating temperature; the heating module configured to enter the first heating mode to intermittently heat the battery module set by using a first portion of external electric energy, so as to maintain the target sampling temperature at the preset expected heating temperature.