公开(公告)号：US10718797B2

公开(公告)日：2020-07-21

申请号：US16165925

申请日：2018-10-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei Zhang ,  Zhimin Dan ,  Jiechao Luo ,  Yizhen Hou

IPC: G01R19/165 ,  B60L58/10 ,  G01R31/382 ,  G01R19/10 ,  G01R31/36 ,  H02J7/00

Abstract: A current detecting apparatus and a battery management system are provided. In the current detecting apparatus, a positive electrode of a power battery pack is connected to a first terminal of a primary positive circuit, a negative electrode of the power battery pack is connected to a first terminal of a primary negative circuit, and a current sensor is connected in series between the negative electrode of the power battery pack and the first terminal of the primary negative circuit; the current sensor is configured for obtaining and outputting a voltage signal of the power battery pack; a microcontroller unit is configured for implementing current conversion on the voltage signal, transmitting a detected current value, which is obtained by the current conversion, of the power battery pack and receiving a control command for controlling the primary positive and negative circuits to turn on or turn off.

公开(公告)号：US20190064230A1

公开(公告)日：2019-02-28

申请号：US16112720

申请日：2018-08-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yizhen Hou ,  Zhanyu Sun ,  Zhimin Dan ,  Jiechao Luo ,  Wei Zhang

IPC: G01R19/165

Abstract: The present disclosure provides a battery high voltage sampling circuit and a battery management system. The battery high voltage sampling circuit includes a positive relay, a negative relay, a first positive sampling unit, a first negative sampling unit and a reference voltage terminal, wherein: a first terminal of the positive relay is connected to a positive electrode of a power battery pack to be detected, a first terminal of the negative relay is connected to a negative electrode of the power battery pack to be detected, and both of the first positive sampling unit and the first negative sampling unit are connected to the reference voltage terminal.

公开(公告)号：US11637440B2

公开(公告)日：2023-04-25

申请号：US17471203

申请日：2021-09-10

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H04W4/00 ,  H02J7/00 ,  G01R31/389 ,  G01R31/3842 ,  G01R31/392 ,  H04W52/02

Abstract: The present disclosure provides a battery management system, and a method and apparatus for transmitting information. 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：US10992327B2

公开(公告)日：2021-04-27

申请号：US16930659

申请日：2020-07-16

Applicant: Contemporary Amperex Technology Co., Limited

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

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

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.

公开(公告)号：US10957947B2

公开(公告)日：2021-03-23

申请号：US16166448

申请日：2018-10-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhimin Dan ,  Yizhen Hou ,  Zhanyu Sun ,  Jiechao Luo ,  Jia Xu

IPC: H01M10/48 ,  B60L58/10 ,  B60L50/60 ,  G01R19/165 ,  H01M10/42 ,  G01R31/36 ,  B60L3/00 ,  H03K17/082

Abstract: The present invention provides a high-voltage detection circuit, detector, battery device and vehicle, the high-voltage detection circuit includes: a controller including a first signal input port, a second signal input port, and a signal output port; a current detection sub-circuit for sampling a current signal of internal side of a main negative switch and for transmitting the current signal to the first signal input port; a switch detection sub-circuit, a first end of the switch detection sub-circuit being configured to sample a first electric signal of external side of a to-be-detected switch, and a second end of the switch detection sub-circuit being configured to transmit the first electric signal to the second signal input port; and a switch driving sub-circuit, configured for sampling a switch control signal via the signal output port and generating a switch driving signal according to the switch control signal.

公开(公告)号：US10761118B2

公开(公告)日：2020-09-01

申请号：US16112720

申请日：2018-08-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yizhen Hou ,  Zhanyu Sun ,  Zhimin Dan ,  Jiechao Luo ,  Wei Zhang

IPC: G01R19/165 ,  G01R19/25 ,  G01R31/36

Abstract: The present disclosure provides a battery high voltage sampling circuit and a battery management system. The battery high voltage sampling circuit includes a positive relay, a negative relay, a first positive sampling unit, a first negative sampling unit and a reference voltage terminal, wherein: a first terminal of the positive relay is connected to a positive electrode of a power battery pack to be detected, a first terminal of the negative relay is connected to a negative electrode of the power battery pack to be detected, and both of the first positive sampling unit and the first negative sampling unit are connected to the reference voltage terminal.

公开(公告)号：US20190118668A1

公开(公告)日：2019-04-25

申请号：US16166448

申请日：2018-10-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhimin Dan ,  Yizhen Hou ,  Zhanyu Sun ,  Jiechao Luo ,  Jia Xu

IPC: B60L11/18 ,  H01M10/48 ,  H01M10/42 ,  G01R19/165

Abstract: The present invention provides a high-voltage detection circuit, detector, battery device and vehicle, the high-voltage detection circuit includes: a controller including a first signal input port, a second signal input port, and a signal output port; a current detection sub-circuit for sampling a current signal of internal side of a main negative switch and for transmitting the current signal to the first signal input port; a switch detection sub-circuit, a first end of the switch detection sub-circuit being configured to sample a first electric signal of external side of a to-be-detected switch, and a second end of the switch detection sub-circuit being configured to transmit the first electric signal to the second signal input port; and a switch driving sub-circuit, configured for sampling a switch control signal via the signal output port and generating a switch driving signal according to the switch control signal.