公开(公告)号：US20200350935A1

公开(公告)日：2020-11-05

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: H04B1/04 ,  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.

公开(公告)号：US20190158054A1

公开(公告)日：2019-05-23

申请号：US16166478

申请日：2018-10-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhimin DAN ,  Wei ZHANG ,  Yizhen HOU ,  Jia XU

IPC: H03H7/06 ,  H03F3/45 ,  G01R31/36

CPC classification number: H03H7/06 ,  G01R19/0092 ,  G01R19/25 ,  G01R31/36 ,  G01R31/382 ,  G01R31/3835 ,  H03F3/45475 ,  H03F2200/165 ,  H03F2203/45022 ,  H03F2203/45151

Abstract: The present application provides an apparatus for processing signals of a high-voltage loop, a detector, a battery device, and a vehicle. The apparatus includes a filter circuit connected to an element to be detected and configured to filter signals from the element to be detected; a differential amplification circuit connected to the filter circuit and configured to amplify the filtered signals; and a processor connected to the differential amplification circuit and configured to process the amplified signals.

公开(公告)号：US20210111443A1

公开(公告)日：2021-04-15

申请号：US17130972

申请日：2020-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiao WANG ,  Chao ZENG ,  Jia XU ,  Zhimin DAN ,  Yizhen HOU ,  Wei ZHANG ,  Guoliang HU

IPC: H01M10/48 ,  B60L58/24 ,  H01M10/42

Abstract: This application provides a method, an apparatus, a system for detecting battery thermal runaway, and a battery management unit. The method includes: obtaining an output signal of an air pressure sensor located in a battery pack, and obtaining parameter information of the battery pack; determining state information of the air pressure sensor based on the output signal of the air pressure sensor; and generating an alarm signal indicating occurrence of thermal runaway in the battery pack based on the state information of the air pressure sensor and the parameter information of the battery pack. In this application, the thermal runaway detection for the battery pack may be implemented by considering parameter information of both the air pressure sensor and the battery pack, improving the reliability of the thermal runaway detection for the battery pack, reducing the probability of false positives and false negatives, and improving driving safety.

公开(公告)号：US20200350770A1

公开(公告)日：2020-11-05

申请号：US16555006

申请日：2019-08-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin DAN ,  Chao ZENG ,  Xiao WANG ,  Jia XU ,  Yizhen HOU ,  Wei ZHANG ,  Guoliang HU

IPC: H02J7/00 ,  G01R31/382 ,  G01R31/364

Abstract: The present disclosure provides a thermal runaway detection circuit and a method, which is directed to field of batteries. The circuit includes: a sensing module including a terminating resistor; a detection module including a first voltage dividing resistor set and a second voltage dividing resistor set; and a processing module connected to the detection module, wherein the processing module is configured to obtain thermal runaway detection data, and determine whether thermal runaway occurs in the battery pack based on the thermal runaway detection data. The thermal runaway detection data includes first sampled data and second sampled data. The technical solutions in the present disclosure can improve safety of the battery pack.

公开(公告)号：US20200083730A1

公开(公告)日：2020-03-12

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: H02J7/00 ,  G01R31/392 ,  G01R31/3842 ,  G01R31/389

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：US20200084090A1

公开(公告)日：2020-03-12

申请号：US16540402

申请日：2019-08-14

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin DAN ,  Wenbin LU ,  Wei ZHANG ,  Yizhen HOU ,  Jia XU ,  Jiechao LUO ,  Teng YU

IPC: H04L12/24

Abstract: The present disclosure provides a battery management system and a communication method. The method includes: determining, by a main BMU, from a plurality of managed units a fault unit that communicates abnormally with the main BMU, and transmitting, by the main BMU, to a backup BMU a fault frequency at which the fault unit communicates abnormally with the main BMU; selecting, by the backup BMU, from the managed units a managed unit that communicates normally with the backup BMU and the fault unit as a target unit; transmitting, by the backup BMU, frequency-conversion information to the fault unit through the target unit based on the fault frequency; converting, by the fault unit, its frequency to a frequency; transmitting the frequency to the main BMU if the backup BMU communicates normally with the fault unit using the frequency; and communicating, by the main BMU, with the fault unit using the frequency.

公开(公告)号：US20200083722A1

公开(公告)日：2020-03-12

申请号：US16559645

申请日：2019-09-04

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei ZHANG ,  Zhimin DAN ,  Yizhen HOU ,  Jia XU ,  Jiechao LUO ,  Wenbin LU ,  Teng YU

IPC: H02J7/00 ,  G01R31/396 ,  G01R31/382

Abstract: The embodiments of the present disclosure disclose a battery management system. The battery management system comprises: a battery management unit, configured to receive status information of a battery module and status information of a battery pack, and transmit a control instruction to cell measurement circuits; the cell measurement circuits, configured to collect the status information of the battery module, transmit the status information of the battery module to the battery management unit, receive and execute the control instruction transmitted from the battery management unit; sensing units, configured to collect the status information of the battery pack, and transmit the status information of the battery pack to the battery management unit; wherein a wireless communication unit is disposed in the battery management unit, and a wireless communication unit is disposed in at least a portion of the cell measurement circuits and/or at least a portion of the sensing units.

公开(公告)号：US20210408817A1

公开(公告)日：2021-12-30

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: 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：US20200300917A1

公开(公告)日：2020-09-24

申请号：US16898175

申请日：2020-06-10

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin DAN ,  Wei ZHANG ,  Yizhen HOU ,  Jia XU

IPC: G01R31/36 ,  G01R15/20 ,  G01R1/20 ,  G01R15/14 ,  G01R19/00

Abstract: The present disclosure provides a current detection system, method and device. The current detection system includes a management unit and a current detection device that is connected with the management unit. The current detection device includes a shunt-type current measurement unit, an open-loop Hall-type current measurement unit and an isolation power unit.

公开(公告)号：US20200084624A1

公开(公告)日：2020-03-12

申请号：US16555020

申请日：2019-08-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wenbin LU ,  Zhimin DAN ,  Yizhen HOU ,  Wei ZHANG ,  Jia XU ,  Jiechao LUO ,  Teng YU

IPC: H04W12/06 ,  H04L9/30 ,  H04L9/08 ,  H04W12/00 ,  H04W12/04 ,  H04L29/06 ,  H04L9/14

Abstract: The embodiments of the present disclosure disclose a method for data transmission, comprising: authenticating, by a target node in a battery management system, a source node in response to a request for data transmission from the source node; selecting, by the target node, any two prime numbers from a pre-stored set of prime numbers if the authentication is passed, generating a public key and a private key according to the two prime numbers, and transmitting the public key to the source node; performing, by the source node, a first encryption byte-by-byte for source data to be transmitted using the public key, performing a second encryption for the first encrypted data using a first encryption algorithm stored by the source node itself, and transmitting the second encrypted data to the target node.