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公开(公告)号：US11894786B2
公开(公告)日：2024-02-06
申请号：US17858864
申请日：2022-07-06
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xiong Zheng , Xianxi Pan , Yu Luo , Zhimin Dan
CPC classification number: H02P21/05 , H02P6/10 , H02P21/22 , H02P2207/05
Abstract: This application provides a permanent-magnet synchronous machine control method and device, and a permanent-magnet synchronous machine control system. The method includes: obtaining a d-axis current id and a q-axis current iq in a permanent-magnet synchronous machine control loop at a current moment; obtaining a fifth-order harmonic current id5th and a seventh-order harmonic current id7th in the d-axis current id in the permanent-magnet synchronous machine control loop at the current moment, and a fifth-order harmonic current iq5th and a seventh-order harmonic current iq7th in the q-axis current iq in the permanent-magnet synchronous machine loop at the current moment; determining a d-axis current idk+1 at a next moment in each switch state; determining a q-axis current iqk+1 at the next moment in each switch state based on the first current idk, the second current iqk, and the second voltage in each switch state; and determining a control policy of the permanent-magnet synchronous machine.
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公开(公告)号：US20170214036A1
公开(公告)日：2017-07-27
申请号：US15409384
申请日：2017-01-18
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jiandong Yang , Wei Li , Haizu Jin , Yu Luo , Yongshou Lin , Kai Wu
IPC: H01M4/13 , H01M4/66 , H01M2/18 , H01M10/0525
CPC classification number: H01M4/13 , H01M2/18 , H01M4/661 , H01M4/70 , H01M10/0525 , Y02T10/7011
Abstract: The present application relates to an electrode sheet for Li-ion battery and a Li-ion battery including the same. The Li-ion battery includes a current collector and a diaphragm layer coated on the current collector, the current collector includes a coating region and at least one electrode tab region, the coating region is a region of the current collector coated with the diaphragm layer; the coating region is adjoined with the electrode tab region, a stress releasing region is provided at adjoining position of the coating region and at least one electrode tab region. The stress releasing region provided by the present application can reduce stress received by the diaphragm during rolling and stretching processes, which can avoid cracking of electrode tab and electrode sheet, and can improve battery cycling performance and, at the same time, can also be fused in short circuit, thereby improving safety performance of the battery.
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公开(公告)号：US10249870B2
公开(公告)日：2019-04-02
申请号：US15409384
申请日：2017-01-18
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jiandong Yang , Wei Li , Haizu Jin , Yu Luo , Yongshou Lin , Kai Wu
Abstract: The present application relates to an electrode sheet for Li-ion battery and a Li-ion battery including the same. The Li-ion battery includes a current collector and a diaphragm layer coated on the current collector, the current collector includes a coating region and at least one electrode tab region, the coating region is a region of the current collector coated with the diaphragm layer; the coating region is adjoined with the electrode tab region, a stress releasing region is provided at adjoining position of the coating region and at least one electrode tab region. The stress releasing region provided by the present application can reduce stress received by the diaphragm during rolling and stretching processes, which can avoid cracking of electrode tab and electrode sheet, and can improve battery cycling performance and, at the same time, can also be fused in short circuit, thereby improving safety performance of the battery.
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