公开(公告)号：US11309598B2

公开(公告)日：2022-04-19

申请号：US16233096

申请日：2018-12-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin Dan ,  Wenbin Lu ,  Wei Zhang ,  Yizhen Hou ,  Teng Yu ,  Xiyang Zuo ,  Xingyuan Wu ,  Taosheng Zhu

IPC: H01M10/615 ,  H01M10/651 ,  H01M10/6571 ,  H01M10/42 ,  G01R31/382 ,  G01R19/165

Abstract: The present disclosure provides a heating control method and a heating control device. The heating control method includes: acquiring an average current value in a heating circuit of a power battery pack; calculating a current output value required for nth cycle according to an average current value of the nth cycle, an average current value of (n−1)th cycle, an average current value of (n−2)th cycle, a preset current value, n is equal to or greater than 3; outputting a PWM signal to a switch device of the heating circuit according to a pre-calibrated PWM control parameter corresponding to the current output value so that a difference between an actual current value in the heating circuit and the preset current value is less than a preset threshold.

公开(公告)号：US11146090B2

公开(公告)日：2021-10-12

申请号：US16539996

申请日：2019-08-13

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin Dan ,  Wenbin Lu ,  Wei Zhang ,  Yizhen Hou ,  Jia Xu ,  Jiechao Luo ,  Teng Yu

IPC: G01R31/08 ,  H04J1/00 ,  H04L12/16 ,  H02J7/00 ,  G01R31/389 ,  G01R31/3842 ,  G01R31/392 ,  H04W52/02

Abstract: The present disclosure provides a method for transmitting information in a battery management system. The method includes: determining, from a plurality of slave nodes, a fault slave node that communicates abnormally with a master node in the battery management system; selecting a target slave node from the plurality of slave nodes, wherein the target slave node is a slave node that communicates normally with both the master node and the fault slave node; transmitting frequency conversion information to the target slave node, so that the target slave node forwards the frequency conversion information to the fault slave node, and the fault slave node performs a frequency conversion based on the frequency conversion information; and transmitting information with the fault slave node using a frequency after the frequency conversion. According to embodiments of the present disclosure, the reliability of wireless communication in the battery management system can be improved.

公开(公告)号：US10756770B2

公开(公告)日：2020-08-25

申请号：US16542401

申请日：2019-08-16

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yizhen Hou ,  Zhimin Dan ,  Wei Zhang ,  Jiechao Luo ,  Wenbin Lu ,  Jia Xu ,  Teng Yu

IPC: H04B1/04 ,  H04B1/00 ,  H03H7/01 ,  H01Q1/52 ,  H04B1/10

Abstract: A system comprises an antenna, a port converting device, an information transmission device, a shield case, and a reference voltage end; wherein the antenna, the port converting device, and the information transmission device are connected sequentially, and the information transmission device is disposed within the shield case, and both the shield case and the port converting device is connected with the reference voltage end; the antenna is configured for a conversion between a radio frequency signal and a single-ended signal; the port converting device is configured for a conversion between the single-ended signal and target differential mode signals; the information transmission device is configured to transmit and process the target differential mode signals; and parameters of components in the port converting device is determined according to a preset communication frequency and a voltage amplitude and phase of a differential mode signal.