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1.发明公开
公开(公告)号：EP4236048A3
公开(公告)日：2023-10-25
申请号：EP23179924.8
申请日：2019-05-24
发明人： ZHU, Huibin , DAI, Heping , LIANG, Yongtao , LIU, Weiping
IPC分类号： H02J7/02 , H02J7/00 , B60L53/24 , H02M1/10 , H02M3/335 , H02M1/00 , H02M1/42 , H02M7/48 , H02M7/487
摘要： According to one aspect of the present disclosure, there is provided an apparatus that includes first, second, and third power converter stages connected to a transformer module. At least one of the first, second, and third power converter stages is a multi-level power converter stage that has multiple configurations to generate different output voltages from an input voltage.
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公开(公告)号：EP4236056A3
公开(公告)日：2023-09-27
申请号：EP23179230.0
申请日：2019-11-22
发明人： ZHU, Huibin , DAI, Heping , LIANG, Yongtao , LIU, Weiping , SU, Feng , WANG, Shaohua
IPC分类号： H02J7/02 , B60L53/24 , H02M3/00 , H02M7/797 , H02M7/5387
摘要： According to one aspect of the present disclosure, there is provided an apparatus that includes a battery, a Direct Current (DC) bus connected to the battery, and a DC to DC converter connected to the battery in parallel with the DC bus. A Motor Control Unit (MCU) is connected between the DC to DC converter and an electric motor. An Alternating Current (AC) port is connected to the electric motor. Switches connect the DC bus and an output of the DC to DC converter in series as an input to the MCU in a drive mode and disconnect the DC bus from the MCU in a charge mode.
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公开(公告)号：EP4231494A1
公开(公告)日：2023-08-23
申请号：EP23157136.5
申请日：2023-02-16
发明人： LIU, Ren , LIU, Weiping , SHI, Shanchuan
摘要： This application provides a converting circuit and a charging apparatus, and relates to the field of electronic technologies. The converting circuit includes two groups of parallel connected primary-side converting circuits, two groups of parallel connected secondary-side converting circuits, a third secondary-side converting circuit, a first transformer, a second transformer, and a third transformer. The two groups of parallel connected primary-side converting circuits are connected in a one-to-one correspondence with a primary side of the first transformer and a primary side of the second transformer. The two groups of parallel connected secondary-side converting circuits are connected in a one-to-one correspondence with a secondary side of the first transformer and a secondary side of the second transformer. The two groups of parallel connected primary -side converting circuits include a first input end and a second input end, or the two groups of parallel connected secondary -side converting circuits include a first input end and a second input end. The first input end and the second input end are separately connected to a primary side of the third transformer. Therefore, a primary-side converting circuit does not need to be disposed for the third transformer, to effectively reduce circuit complexity and reduce the circuit costs.
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公开(公告)号：EP3972078A1
公开(公告)日：2022-03-23
申请号：EP20879024.6
申请日：2020-06-10
发明人： LIU, Weiping , CUI, Zhaoxue , LIANG, Yongtao
IPC分类号： H02J7/02 , H02J7/00 , H02M7/797 , H02M3/335 , B60R16/033
摘要： Embodiments of this application disclose an in-vehicle charge and discharge system and control method. The system includes: an alternating current interface, an isolating transfer switch, a first converter, a second converter, a high-voltage battery interface, a low-voltage battery interface, and a controller. The controller is configured to: control the isolating transfer switch to switch to a first conducting state, so that the alternating current interface is conducted with the high-voltage battery interface by using the first converter and the second converter that are connected in series; and control the first converter to work in a PFC mode or an inverting mode, and control the second converter to work in a DCDC isolating conversion mode. The controller is further configured to: control the isolating transfer switch to switch to a second conducting state, so that the low-voltage battery interface is conducted with the high-voltage battery interface by using the first converter and the second converter that are connected in series; and control the first converter to work in a DCDC conversion mode, and control the second converter to work in the DCDC isolating conversion mode. This structure can reduce a size of the in-vehicle charge and discharge system.
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公开(公告)号：EP3928411A1
公开(公告)日：2021-12-29
申请号：EP19818479.8
申请日：2019-11-22
发明人： ZHU, Huibin , DAI, Heping , LIANG, Yongtao , LIU, Weiping , SU, Feng , WANG, Shaohua
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公开(公告)号：EP3923307A1
公开(公告)日：2021-12-15
申请号：EP20852993.3
申请日：2020-05-12
发明人： LIANG, Yongtao , LIU, Weiping , ZHI, Yanjun
摘要： This application provides a magnetic integrated device, a power conversion circuit, a charger, and an electric vehicle, and pertains to the field of power electronics technologies. The magnetic integrated device includes a magnetic core, a first transformer winding, and a second transformer winding, where the first transformer winding and the second transformer winding are separated and wound, and a first air gap is formed at separation. A magnetic line may pass through the first air gap to form leakage inductance, and the leakage inductance may be equivalent to resonant inductance in the power conversion circuit. Therefore, there is no need to separately dispose an inductor winding in the magnetic integrated device. This effectively reduces a volume and a weight of the magnetic integrated device. In addition, the power conversion circuit that uses the magnetic integrated device also has a relatively small volume and relatively high power density.
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公开(公告)号：EP3922504A1
公开(公告)日：2021-12-15
申请号：EP20831894.9
申请日：2020-03-20
发明人： LIU, Weiping , LIANG, Yongtao , FU, Dianbo
摘要： An on-board charging and discharging apparatus (200) and a system are provided. The apparatus includes: a bidirectional AC/DC conversion circuit (201), a unidirectional DC/DC conversion circuit (202), and a bidirectional DC/DC conversion circuit (203). The bidirectional AC/DC conversion circuit (201) is configured to convert a received first alternating current voltage into a first direct current voltage, or convert a second direct current voltage output by the bidirectional DC/DC conversion circuit (203) into a second alternating current voltage. The unidirectional DC/DC conversion circuit (202) is configured to convert a first component of the first direct current voltage into a third direct current voltage. The bidirectional DC/DC conversion circuit (203) is configured to convert a second component of the first direct current voltage into a fourth direct current voltage, or convert a received fifth direct current voltage into the second direct current voltage. The first component and the second component constitute the first direct current voltage. The on-board charging and discharging apparatus (200) and the system are configured to implement charging and discharging functions.
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公开(公告)号：EP4236056A2
公开(公告)日：2023-08-30
申请号：EP23179230.0
申请日：2019-11-22
发明人： ZHU, Huibin , DAI, Heping , LIANG, Yongtao , LIU, Weiping , SU, Feng , WANG, Shaohua
IPC分类号： H02M7/797
摘要： According to one aspect of the present disclosure, there is provided an apparatus that includes a battery, a Direct Current (DC) bus connected to the battery, and a DC to DC converter connected to the battery in parallel with the DC bus. A Motor Control Unit (MCU) is connected between the DC to DC converter and an electric motor. An Alternating Current (AC) port is connected to the electric motor. Switches connect the DC bus and an output of the DC to DC converter in series as an input to the MCU in a drive mode and disconnect the DC bus from the MCU in a charge mode.
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公开(公告)号：EP4181344A1
公开(公告)日：2023-05-17
申请号：EP21851267.1
申请日：2021-07-26
发明人： LIANG, Tao , LIU, Weiping , LIU, Ren , LI, Dong
IPC分类号： H02J7/00
摘要： Embodiments of this application provide a voltage conversion circuit, a control method, a DC/DC converter and a device. The voltage conversion circuit includes a failure isolation module, a soft start module, and a voltage conversion module. The voltage conversion module includes an output filter capacitor. Both a first terminal of the failure isolation module and a first terminal of the soft start module are connected to a positive electrode of a first battery, both a second terminal of the failure isolation module and a second terminal of the soft start module are connected to a first terminal of the output filter capacitor, and a second terminal of the output filter capacitor is connected to a negative electrode of the first battery. The soft start module is configured to connect the first battery and the output filter capacitor, so that the first battery charges the output filter capacitor. The failure isolation module is turned on when the output filter capacitor is charged by the first battery and a voltage of the output filter capacitor is greater than or equal to a second preset voltage, so that the voltage conversion module converts a low-voltage direct current output by the first battery into a high-voltage direct current to charge a high-voltage bus capacitor. In the embodiments of this application, reliability of a power supply circuit on a vehicle is improved.
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公开(公告)号：EP3971018A1
公开(公告)日：2022-03-23
申请号：EP20862783.6
申请日：2020-06-09
发明人： SU, Feng , LIU, Weiping , LIANG, Yongtao
摘要： A charging and discharging circuit and system, and an electric vehicle are provided. The charging and discharging circuit includes a battery (1), a motor (5), a first charging interface (6), a first bridge arm (2), a second bridge arm (3), a third bridge arm (4), a first switch (K1), a second switch (K2), a third switch (K3), a fourth switch (K4), a fifth switch (SI), a sixth switch (S2), a seventh switch (S3), and an eighth switch (S4). In the structure, the charging and discharging circuit can implement a driving mode and a charging mode. Therefore, an unnecessary component in the charging and discharging circuit is omitted, thereby reducing a volume of the charging and discharging circuit.
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