-
公开(公告)号：US20210050719A1
公开(公告)日：2021-02-18
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.
-
公开(公告)号：US20210367441A1
公开(公告)日：2021-11-25
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 , H03K17/687 , H03K17/567
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.
-
Patent Agency Ranking
公开(公告)号：US20230261504A1
公开(公告)日：2023-08-17
申请号：US18139358
申请日：2023-04-26
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Wei ZHANG , Jinbo CAI , Qidong LOU
CPC classification number: H02J7/06 , B60L53/22 , B60L58/12 , H02J7/0019 , H02J7/0047 , H02J7/342 , B60L2210/10 , H02J2207/20
Abstract: A charging method may be applied to a charging apparatus. The charging method may include: in the discharge stage, obtaining a current voltage of the energy storage battery in each energy storage unit; determining, based on the current voltage of the energy storage battery in each energy storage unit, a first voltage output by the first DC/DC converter in each energy storage unit, where the first voltage output is inversely proportional to the current voltage of the energy storage battery; and sending the first voltage to the first DC/DC converter, so as to cause the energy storage battery to receive, at the first voltage via the first DC/DC converter, electrical energy released by the traction battery.
-
公开(公告)号：US20230268755A1
公开(公告)日：2023-08-24
申请号：US18067106
申请日：2022-12-16
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Tianyi HUANG , Xianxi PAN , Jinfeng GAO , Jinbo CAI
CPC classification number: H02J7/00712 , H02J7/0013 , H02J7/0048 , H01M10/441 , H01M10/425 , H02J2207/20
Abstract: An energy storage system includes a first energy storage branch and a second energy storage branch connected in parallel. The first energy storage branch includes a first battery cluster. The second energy storage branch includes a second battery cluster and a DC/DC converter connected to the second battery cluster in series, with an output end of the DC/DC converter being connected to the second battery cluster. The DC/DC converter is configured to adjust an output current of the second energy storage branch to balance an output current of the first energy storage branch and the output current of the second energy storage branch.
-
公开(公告)号：US20230261487A1
公开(公告)日：2023-08-17
申请号：US18305570
申请日：2023-04-24
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jinbo CAI , Qidong LOU , Wei ZHANG
CPC classification number: H02J7/0024 , B60L53/53 , B60L58/12 , B60L53/24 , B60L53/60 , B60L2210/10 , B60L2210/30
Abstract: Charging method and charging apparatus for traction battery are provided. The charging apparatus includes N energy storage units connected in parallel. Each energy storage unit includes an energy storage battery and a first DC/DC converter connected to the energy storage battery. Each charging period of the charging apparatus includes a stage in which a traction battery is charged and a stage in which the traction battery discharges to the N energy storage units. The charging method includes: obtaining a first parameter of each energy storage unit in the discharge stage; determining, based on the first parameter, a first current output by the first DC/DC converter in each energy storage unit, where the first current is inversely proportional to the first parameter of the energy storage battery; and sending the first current to the first DC/DC converter. The energy storage battery receives, via the first DC/DC converter, electrical energy released by the traction battery.
-
公开(公告)号：US20220247197A1
公开(公告)日：2022-08-04
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
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.
-
公开(公告)号：US20210293860A1
公开(公告)日：2021-09-23
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.
-
-
-
-
-
-
Search Results
7
records
(took 0.015 seconds)
