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1.发明授权公开(公告)号：US12100866B2
公开(公告)日：2024-09-24
申请号：US18625105
申请日：2024-04-02
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Meng Li , Zhen Li , Zhixin Luo
IPC: H01M50/581 , H01M10/04 , H01M50/536
CPC classification number: H01M50/581 , H01M10/0404 , H01M50/536 , H01M2200/10
Abstract: Provided are a battery cell, a battery, an electrical apparatus, and a method and device for manufacturing a battery cell. The battery cell includes a case, an end cover, an electrode assembly and a solder, the case has an accommodating cavity and an opening at one end; the end cover is connected to the case; the electrode assembly is provided in the accommodating cavity, the electrode assembly has a first tab, and the first tab faces the opening; the solder is provided between the end cover and the first tab and connects the end cover and the first tab; an insulating member is also provided between the end cover and the first tab, an insulating cavity is provided on the insulating member, a feed port is provided on one side of the insulating cavity, and the feed port faces the solder.
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公开(公告)号：US10996251B2
公开(公告)日：2021-05-04
申请号：US16233620
申请日：2018-12-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Yizhen Hou , Weiping Sun , Meng Li , Wei Zhang , Teng Yu
Abstract: Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method includes steps of controlling the insulation resistance obtaining circuit to output a low-frequency AC signal; when both the main relay and the pre-charge relay are switched off, obtaining an internal side insulation resistance of the main relay according to the low-frequency AC signal; if the internal side insulation resistance of the main relay is normal, controlling the pre-charge relay to be switched on; and when the main relay is switched off and the pre-charge relay is switched on, obtaining an external side insulation resistance value of the main relay according to the low-frequency AC signal.
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公开(公告)号：US10763552B2
公开(公告)日：2020-09-01
申请号：US16245198
申请日：2019-01-10
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Meng Li , Yizhen Hou , Wei Zhang , Lidan Yan
IPC: G01R31/382 , H01M10/42 , G01R27/02 , G01R31/3835 , G01R31/50 , G01R31/396 , H01M10/48 , G01R31/12
Abstract: The present disclosure provides an insulation detection circuit and method, and a battery management system. The circuit includes a first isolation module, a voltage division module, a signal generation module, first and second sampling points and a processor. A first end of the first isolation module is connected to a power battery, and a second end of the first isolation module is connected to the second sampling point. The signal generation module is connected to the first sampling point and configured to inject an AC signal into the power battery and provide the first sampling point with a first sampled signal. A first end of the voltage division module is connected to the first sampling point, and a second end of the voltage division module is connected to the second sampling point. The processor is configured to calculate an insulation resistance of the power battery.
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4.发明授权公开(公告)号：US11936235B2
公开(公告)日：2024-03-19
申请号：US17903853
申请日：2022-09-06
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Huaisen Zhang , Yuan Yao , Meng Li , Weichen He , Guiying Lin , Yu Yan
IPC: H02J7/00
CPC classification number: H02J7/007194 , H02J7/00032 , H02J7/0013 , H02J7/00309
Abstract: The present application relates to a method and apparatus of power distribution control for power module and a power module device. The method includes: obtaining temperature data of target devices in two or more power modules; analyzing whether the power modules are operating at full power when the temperature data of the target devices meets a preset temperature fault condition; and adjusting operating parameters of the power modules based on the temperature data when the power modules are not operating at full power.
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5.发明授权公开(公告)号：US10895593B2
公开(公告)日：2021-01-19
申请号：US16233095
申请日：2018-12-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Wei Zhang , Zhimin Dan , Yizhen Hou , Meng Li , Weiping Sun , Teng Yu
IPC: G01R31/12 , G01R31/3835 , G01R27/02 , G01R31/00 , G01R31/50 , G01R31/389
Abstract: The present disclosure provides a parameter selection method, apparatus, and computer readable storage medium for an insulation detection circuit. The parameter selection method includes determining an allowable injection frequency range of an AC signal to be injected, according to a predetermined resistance range of an insulation resistance of the power battery under test and a predetermined resistance calculation cycle of the insulation resistance; and selecting an output frequency of the signal generation module according to a lowest frequency to be generated by the signal generation module and the allowable injection frequency range.
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Patent Agency Ranking
公开(公告)号：US20240421612A1
公开(公告)日：2024-12-19
申请号：US18817271
申请日：2024-08-28
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Meng Li , Yanhua Lu , Dongxu Yu , Guoxiu Wu , Liliuyuan Liang , Xiangxiang Xu , Bingtuan Luo
IPC: H02J7/00
Abstract: Provided are a control method for an energy storage system and the energy storage system. The energy storage system includes N energy storage sub-modules, where N is a positive integer greater than 1. The control method for the energy storage system includes: acquiring an SOC and a charge-discharge limiting current of each of the N energy storage sub-modules; and controlling working states of the N energy storage sub-modules according to the SOC and the charge-discharge limiting current of each of the energy storage sub-modules, where the working states include a switched-on state and a switched-off state. According to the technical solution provided by embodiments of this application, the problem of SOC imbalance among the energy storage sub-modules can be solved, so that the utilization rate of the energy storage system is improved.
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公开(公告)号：US11296525B2
公开(公告)日：2022-04-05
申请号：US15733803
申请日：2020-06-15
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Meng Li , Zhimin Dan , Yizhen Hou
IPC: H02J7/00 , H01M10/48 , H01M10/44 , H01M10/052 , H01M10/42
Abstract: The present disclosure provides a control device, an energy conversion system, an energy conversion method and a storage medium. The control device includes: a detection unit configured to detect a first voltage between a positive electrode of the energy storage device and a first end of an energy conversion device, a second voltage between a negative electrode of the energy storage device and a second end of the energy conversion device, and a third voltage between the positive electrode and the negative electrode of the energy storage device; a processing unit configured to calculate a resistance value corresponding to the energy conversion device according to the first voltage, the second voltage, and the third voltage; when the value of resistance is greater than a resistance threshold value, controlling the energy storage device to supply power to the electrical equipment through the energy conversion device.
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公开(公告)号：US11249123B2
公开(公告)日：2022-02-15
申请号：US17134564
申请日：2020-12-28
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Yizhen Hou , Weiping Sun , Meng Li , Wei Zhang , Teng Yu
Abstract: Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method includes: controlling an insulation resistance obtaining circuit to output an AC signal; when both a main relay and a pre-charge relay are switched off, obtaining a first phase shift of the AC signal between two sampling points according to first collected electrical signals; obtaining an internal side insulation resistance of the main relay according to the first collected electrical signals and the first phase shift; controlling the pre-charge relay to be switched on; when the main relay is switched off and the pre-charge relay is switched on, obtaining a second phase shift of the AC signal between the two sampling points according to second collected electrical signals; and obtaining an external side insulation resistance of the main relay according to the second collected electrical signals and the second phase shift.
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公开(公告)号：US11183917B1
公开(公告)日：2021-11-23
申请号：US17124685
申请日：2020-12-17
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Meng Li , Zhimin Dan , Yizhen Hou
Abstract: A power converter as provided includes: a control circuit configured to receive a first electric energy supplied to the control circuit from an energy storage device, receive a second electric energy supplied to the control circuit from a power grid equipment, and be powered on with a third electric energy which is the first electric energy or the second electric energy, and output a control signal; and a power conversion circuit configured to receive the control signal and perform power conversion between the energy storage device and the power grid equipment according to the control signal.
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公开(公告)号：US20210116486A1
公开(公告)日：2021-04-22
申请号：US17134564
申请日：2020-12-28
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin DAN , Yizhen Hou , Weiping Sun , Meng Li , Wei Zhang , Teng Yu
Abstract: Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method includes: controlling an insulation resistance obtaining circuit to output an AC signal; when both a main relay and a pre-charge relay are switched off, obtaining a first phase shift of the AC signal between two sampling points according to first collected electrical signals; obtaining an internal side insulation resistance of the main relay according to the first collected electrical signals and the first phase shift; controlling the pre-charge relay to be switched on; when the main relay is switched off and the pre-charge relay is switched on, obtaining a second phase shift of the AC signal between the two sampling points according to second collected electrical signals; and obtaining an external side insulation resistance of the main relay according to the second collected electrical signals and the second phase shift.
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