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公开(公告)号：US20240204556A1
公开(公告)日：2024-06-20
申请号：US18594522
申请日：2024-03-04
发明人： Yaping LIU , Jiansheng CHEN , Yang LIU , Zhenting JIANG
CPC分类号： H02J7/06 , H02J7/0047 , H02M1/0067 , H02M3/158 , H02M7/23 , H02J2207/20
摘要： An AC/DC converter and a charging apparatus. The AC/DC converter includes a circuit of at least one phase. In a circuit of each phase, a first end of an inductor is coupled to an alternating current power supply, and the second end of the inductor is coupled to a first end of a first winding and a first end of a second winding; the second end of the first winding is coupled to a winding connection end of a first switching unit, and the second end of the second winding is coupled to a winding connection end of a second switching unit; a bus connection end of the first switching unit is coupled to a bus of the AC/DC converter through at least two first rectifier units.
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2.发明公开公开(公告)号：US20240291389A1
公开(公告)日：2024-08-29
申请号：US18654559
申请日：2024-05-03
发明人： Jiansheng CHEN , Yang LIU , Yongfa LI
CPC分类号： H02M3/33573 , H02M3/01 , H02J7/00 , H02J2207/20
摘要： An LLC resonant conversion circuit includes a plurality of harmonic circuits. In each harmonic circuit, a plurality of transformers are electrically connected to each other and are electrically connected to one transformer in another harmonic circuit, so that the harmonic circuits are connected in a crossed manner. In this way, current or voltage of an electrical signal in one harmonic circuit can be distributed to another harmonic circuit. Without adding any component, this achieves the same current value for electrical signals in the harmonic circuits when the harmonic circuits are connected in parallel, and achieves the same voltage value for electrical signals in the harmonic circuits when the harmonic circuits are connected in series. This effectively reduces complexity of a control policy for the entire LLC resonant conversion circuit and also reduces costs of the LLC resonant conversion circuit.
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公开(公告)号：US20240186908A1
公开(公告)日：2024-06-06
申请号：US18519429
申请日：2023-11-27
发明人： Denghai PAN , Yuping QIU , Jiansheng CHEN
CPC分类号： H02M3/33592 , H02M1/0058 , H02M1/0064
摘要： A power supply apparatus, a three-phase transformer circuit, and a charging pile. The power supply apparatus includes a turns ratio switching circuit, a connection relationship switching circuit, a three-phase transformer, and two three-phase rectifier bridge circuits. A three-phase primary winding of the three-phase transformer is configured to receive a three-phase alternating current. A three-phase secondary winding of the three-phase transformer is configured to output a three-phase alternating current to each of the two three-phase rectifier bridge circuits. A running mode of the three-phase transformer includes a first turns ratio mode and a second turns ratio mode. The turns ratio switching circuit is configured to switch a quantity of turns of the three-phase primary winding, to switch the running mode of the three-phase transformer.
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公开(公告)号：US20240146096A1
公开(公告)日：2024-05-02
申请号：US18492022
申请日：2023-10-23
发明人： Jin YANG , Zejie LV , Yang LIU , Yaping LIU , Jiansheng CHEN
CPC分类号： H02J7/35 , B60L53/51 , H02J7/0029 , B60L2210/10 , H02J2207/20
摘要： A charging apparatus, a charging pile, and a charging system. The charging apparatus includes a positive bus, a negative bus, a DC/DC conversion circuit, and a soft-start circuit. The soft-start circuit is connected to an input end of the DC/DC conversion circuit through the positive bus and the negative bus, and the input end of the DC/DC conversion circuit is connected to a photovoltaic apparatus or an energy storage apparatus through the positive bus and the negative bus. Therefore, when a first voltage between the positive bus and the negative bus is greater than or equal to a first threshold, the DC/DC conversion circuit may perform power conversion on a second voltage received from the photovoltaic apparatus or the energy storage apparatus, and output the second voltage obtained after power conversion.
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