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1.发明授权公开(公告)号：US11731529B2
公开(公告)日：2023-08-22
申请号：US17463521
申请日：2021-08-31
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhong Liu , Shuyun Xiong , Jinbo Cai
CPC classification number: B60L58/18 , B60L15/20 , B60L50/60 , B60L58/12 , B60L58/20 , H02J7/0014 , H02J7/00032 , H02J7/0048 , H02J7/342 , B60L2210/10 , B60L2270/00 , H02J2207/20
Abstract: The embodiments of the present application provide a power supply apparatus, a battery management system, a power supply system, a control method and a medium. The method includes: controlling, under a condition that a vehicle is in a parking state, a first battery pack of a power supply apparatus to supply power to a first load of the vehicle, and controlling the first battery pack and a second battery pack of the power supply apparatus to stop supplying power to a second load of the vehicle; acquiring, in a process of supplying power to the first load, a capacity parameter of the first battery pack; controlling, under a condition that the capacity parameter of the first battery pack is lower than a first preset capacity threshold, a direct current converter to transmit electric energy of the second battery pack to the first battery pack.
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公开(公告)号：US11936220B2
公开(公告)日：2024-03-19
申请号：US17562883
申请日：2021-12-27
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chenling Zheng , Yanhua Lu , Jinbo Cai , Bingtuan Luo
CPC classification number: H02J7/00304 , H02J3/32 , H02J7/0013 , H02J7/0031
Abstract: Embodiments of this application provide an energy storage device and system as well as a power system, and relate to the technical field of a power grid. The energy storage device includes: at least two parallel-connected energy storage units, where each energy storage unit includes: a battery cluster and a power conversion system; and the battery cluster includes at least two cells; a direct-current side of the power conversion system is electrically connected to the battery cluster, an alternating-current side of the power conversion system is configured to electrically connect to an input side of an alternating-current combiner cabinet, and an output side of the alternating-current combiner cabinet is configured to electrically connect to an alternating-current side of a transformer. The energy storage device is configured to improve safety and reliability of the energy storage system.
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公开(公告)号：US11287454B2
公开(公告)日：2022-03-29
申请号：US17057433
申请日：2019-12-04
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Yizhen Hou , Zhimin Dan , Wei Zhang , Jinbo Cai , Xiong Zheng
Abstract: The present disclosure discloses a current sampling method and a current sampling circuit. The method comprises: obtaining a detected temperature of each semiconductor switch device of a plurality of parallel semiconductor switch devices; determining that the plurality of parallel semiconductor switch devices are in a current equalization state based on the detected temperature of each semiconductor switch device; obtaining an equalized current flowing through a target semiconductor switch device in the current equalization state, the target semiconductor switch device being any one of the plurality of parallel semiconductor switch devices; determining a total current of a main circuit connected to the plurality of parallel semiconductor switch devices according to the equalized current.
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公开(公告)号：US20230120625A1
公开(公告)日：2023-04-20
申请号：US18059446
申请日：2022-11-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qidong Lou , Jinbo Cai , Wei Zhang , Zhimin Dan
Abstract: A charging device, a charging control method, an energy management system and a storage medium are provided. The charging device includes: a charging circuit including a voltage stability control circuit, an output port and an input port; the voltage stability control circuit being connected to a high-voltage alternating current through the input port and connected to a battery through the output port, and configured to convert the high-voltage alternating current into a low-voltage direct current, charge the battery with a positive pulse current during a first period and charge the battery with a negative pulse current during a second period; and an energy absorption circuit connected in parallel with the charging circuit and configured to absorb the negative pulse current.
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公开(公告)号：US11600992B2
公开(公告)日：2023-03-07
申请号：US16966220
申请日：2019-12-06
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jinbo Cai , Zhimin Dan , Wei Zhang , Yizhen Hou , Xiong Zheng
Abstract: The present application provides an electric protection circuit, which relates to the field of battery power. The electric protection circuit includes a battery pack, a main positive switch, a load device and a main negative switch connected in series. The main positive switch and/or the main negative switch include at least one semiconductor switch. The main positive switch and/or the main negative switch in the electric protection circuit are connected in parallel to a protection module, which absorbs electric energy across two terminals of the main positive switch and/or the main negative switch when the main positive switch and/or the main negative switch are turned off. The technical solution of the present application can improve the safety of the electric protection circuit.
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Patent Agency Ranking
公开(公告)号：US11418046B2
公开(公告)日：2022-08-16
申请号：US16976137
申请日：2019-12-06
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jinbo Cai , Zhimin Dan , Wei Zhang , Yizhen Hou , Xiong Zheng
IPC: H02J7/00 , H03K17/567 , H03K17/687
Abstract: A charge and discharge circuit includes: a charging loop, including a battery pack, a first switch module and a charging device connected in series, where, the charging loop is configured to charge the battery pack using the charging device, and precharge the charging device; and a discharging loop, including the battery pack, a second switch module and an electric device connected in series, where, the discharging loop is configured to make the battery pack discharge to the electric device, and precharge the electric device; where, the first switch module and the second switch module each include at least one switch, and a part of switches in the first switch module and the second switch module are semiconductor switches, and the other part of the switches in the first switch module and the second switch module are relays.
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公开(公告)号：US11962174B2
公开(公告)日：2024-04-16
申请号：US17122955
申请日：2020-12-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Wei Zhang , Zhimin Dan , Jinbo Cai , Yizhen Hou , Meilin Chen
IPC: H02J7/00
CPC classification number: H02J7/00304 , H02J7/0068
Abstract: This application discloses a protection circuit associated with a battery management system (BMS). The protection circuit includes a first protection module and a freewheeling module. The first protection module is connected in parallel to a first switch module of the BMS, and the freewheeling module is connected in parallel to a load module of the BMS. The first protection module switches to a charging state when the first switch module is turned off to stabilize a voltage between a first terminal of the first switch module and a second terminal of the first switch module. The freewheeling module is turned on when the first switch module is turned off to stabilize a voltage between the first switch module and the second switch module. The protection circuit mitigates risks of breakdown of the first switch module, and prevents a parasitic inductance from limiting a switching frequency of the first switch module.
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公开(公告)号：US20210104903A1
公开(公告)日：2021-04-08
申请号：US17122955
申请日：2020-12-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Wei Zhang , Zhimin Dan , Jinbo Cai , Yizhen Hou , Meilin Chen
IPC: H02J7/00
Abstract: This application discloses a protection circuit associated with a battery management system (BMS). The protection circuit includes a first protection module and a freewheeling module. The first protection module is connected in parallel to a first switch module of the BMS, and the freewheeling module is connected in parallel to a load module of the BMS. The first protection module switches to a charging state when the first switch module is turned off to stabilize a voltage between a first terminal of the first switch module and a second terminal of the first switch module. The freewheeling module is turned on when the first switch module is turned off to stabilize a voltage between the first switch module and the second switch module. The protection circuit mitigates risks of breakdown of the first switch module, and prevents a parasitic inductance from limiting a switching frequency of the first switch module.
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公开(公告)号：US20240178686A1
公开(公告)日：2024-05-30
申请号：US18434902
申请日：2024-02-07
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xinwei Chen , Jinbo Cai , Jinfeng Gao
IPC: H02J7/00
CPC classification number: H02J7/0048 , H02J7/00716 , H02J2207/20
Abstract: Disclosed are a control method for a battery system, device, and a battery system, the method comprising: determining that a state of charge (SOC) and a current of a first battery cluster in N battery clusters meet a first preset condition, the first preset condition including: the SOC of the first battery cluster is greater than a first threshold and the current of the first battery cluster is greater than a second threshold or less than a third threshold, wherein the second threshold is set according to a maximum permissible current of the first battery cluster, and the third threshold is set according to an average current of the N battery clusters; and sending first information to a first DCDC converter connected in series with the first battery cluster., the first information being used to instruct controlling the current of the first battery cluster to reach a first preset current.
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公开(公告)号：US11652352B2
公开(公告)日：2023-05-16
申请号：US16978683
申请日：2019-12-06
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Zhimin Dan , Jinbo Cai , Wei Zhang , Yizhen Hou , Xiong Zheng
CPC classification number: H02J7/0013
Abstract: The present application provides a charge and discharge circuit, and relates to the field of battery power. The charge and discharge circuit comprises: a charge circuit comprising a battery pack, a first switch set and a charging device connected in series; and a discharge circuit comprising the battery pack, a second switch set and an electrical device connected in series; both the first switch set and the second switch set comprise at least one switch, and the at least one switch in the first and/or second switch set is a semiconductor switch.
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