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公开(公告)号：US20210072336A1
公开(公告)日：2021-03-11
申请号：US16953563
申请日：2020-11-20
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Yizhen Hou , Zhimin Dan , Wei Zhang , Jia Xu
Abstract: A measurement device includes: a host computer and a current source, wherein the host computer is configured to: control, when ambient temperature of a current detection device is at a preset temperature within an operation temperature range of a shunt of the current detection device, the current source to output a current with a preset current value to the current detection device; receive a calibrated current value sent by the current detection device; calculate a measurement error of the current detection device according to the preset current value and the calibrated current value; and instruct, when the measurement error is less than a preset current error, the current detection device to use the predetermined current calibration coefficient as a current calibration coefficient.
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公开(公告)号：US20200348365A1
公开(公告)日：2020-11-05
申请号：US16559644
申请日：2019-09-04
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xiao WANG , Chao Zeng , Jia Xu , Zhimin Dan , Yizhen Hou , Wei Zhang , Guoliang Hu
IPC: G01R31/392 , H02J7/00 , G01R31/3842 , G01K3/00 , G01K3/10 , G01K13/00 , H01M10/48 , H01M10/42
Abstract: The disclosure provides a thermal runaway detection circuit and method, and relates to batteries. The thermal runaway detection circuit includes: a sensing module including a sensing cable; a detection module connected to the sensing cable and including at least one set of voltage dividing resistors; 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, wherein the thermal runaway detection data includes battery pack data and sampled data collected from sampling points, and the sampling points are disposed between the two connected voltage dividing resistor sets. The technical solutions in the present disclosure can improve safety of the battery pack.
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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.
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公开(公告)号：US10823784B2
公开(公告)日：2020-11-03
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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：US20190120906A1
公开(公告)日：2019-04-25
申请号：US16165811
申请日：2018-10-19
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin DAN , Wei Zhang , Yizhen Hou , Jia Xu
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.
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公开(公告)号：US11353515B2
公开(公告)日：2022-06-07
申请号：US16559644
申请日：2019-09-04
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xiao Wang , Chao Zeng , Jia Xu , Zhimin Dan , Yizhen Hou , Wei Zhang , Guoliang Hu
IPC: G01R31/392 , G01R31/3842 , G01K3/00 , G01K3/10 , G01K13/00 , H01M10/42 , H01M10/48 , H02J7/00
Abstract: The disclosure provides a thermal runaway detection circuit and method, and relates to batteries. The thermal runaway detection circuit includes: a sensing module including a sensing cable; a detection module connected to the sensing cable and including at least one set of voltage dividing resistors; 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, wherein the thermal runaway detection data includes battery pack data and sampled data collected from sampling points, and the sampling points are disposed between the two connected voltage dividing resistor sets. The technical solutions in the present disclosure can improve safety of the battery pack.
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公开(公告)号：US11329866B2
公开(公告)日：2022-05-10
申请号：US17155109
申请日：2021-01-22
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Wenbin Lu , Wei Zhang , Yizhen Hou , Jia Xu , Jiechao Luo , Teng Yu
IPC: H04L12/24 , H04L41/0668 , H04B1/713
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.
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公开(公告)号：US11327139B2
公开(公告)日：2022-05-10
申请号：US16953563
申请日：2020-11-20
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Yizhen Hou , Zhimin Dan , Wei Zhang , Jia Xu
Abstract: A measurement device includes: a host computer and a current source, wherein the host computer is configured to: control, when ambient temperature of a current detection device is at a preset temperature within an operation temperature range of a shunt of the current detection device, the current source to output a current with a preset current value to the current detection device; receive a calibrated current value sent by the current detection device; calculate a measurement error of the current detection device according to the preset current value and the calibrated current value; and instruct, when the measurement error is less than a preset current error, the current detection device to use the predetermined current calibration coefficient as a current calibration coefficient.
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公开(公告)号：US10938628B2
公开(公告)日：2021-03-02
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
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.
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