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公开(公告)号：US20200212816A1
公开(公告)日：2020-07-02
申请号：US16666168
申请日：2019-10-28
发明人： Hao Sun , Minli Jia , Jinfa Zhang
摘要： An on-board charging/discharging system includes a bidirectional converter and a low-voltage converter. When the high-voltage battery is charged or discharged by the bidirectional converter, the bidirectional converter is operated in a variable-frequency mode and the low-voltage converter is also operated in the variable-frequency mode. The on/off states of different switches are controlled according to the output gain of the bidirectional converter, and thus the on-board charging/discharging system has optimized volume and reduced cost. Moreover, the soft switching is achieved when the output gain is lower than 1, greater than 1 or equal to 1. Consequently, the efficiency of the on-board charging/discharging system is enhanced. Moreover, while the low-voltage converter is operated in a fixed-frequency mode, the first bridge of the bidirectional converter is correspondingly controlled. Consequently, the voltage of the bus capacitor is within a reasonable range.
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公开(公告)号：US20190089182A1
公开(公告)日：2019-03-21
申请号：US16122395
申请日：2018-09-05
发明人： Hao Sun , Minli Jia , Jinfa Zhang
CPC分类号： H02J7/022 , B60L53/14 , B60L53/22 , B60L2210/30 , H02J5/00 , H02J7/0045 , H02M1/10 , H02M1/4208 , H02M1/4233 , H02M7/162 , H02M7/17 , H02M7/5388 , H02M2001/007
摘要： A charging device includes a first auxiliary bridge arm and a second auxiliary bridge arm. The first auxiliary bridge arm is connected between a first port and a second module. The second auxiliary bridge arm is connected between the first port and a third module. If the AC charging power is three-phase, the first module converts a first phase of the AC charging power, and the first auxiliary bridge arm and the second auxiliary bridge arm are disabled. Consequently, the second module converts a second phase of the AC charging power, and the third module converts a third phase of the AC charging power. If the AC charging power is single-phase, at least a first module is used to convert the AC charging power.
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公开(公告)号：US11444541B2
公开(公告)日：2022-09-13
申请号：US17348781
申请日：2021-06-16
发明人： Hao Sun , Minli Jia , Jinfa Zhang
摘要： A control method for a DC/DC converter and a DC/DC converter are provided. The method includes: providing a first primary side driving signal to drive the first switch and the fourth switch, and providing a second primary side driving signal to drive the second switch and the third switch; and providing a fifth signal, a sixth signal, a seventh signal and an eighth signal; where switches of the first secondary side bridge arm or the second secondary side bridge arm are turned on or turned off at a zero crossing point of a primary side current, and a driving signal of the second secondary side bridge arm has a phase shift angle with respect to that of the first secondary side bridge arm and the fifth signal is complementary to the sixth signal, and the seventh signal is complementary to the eighth signal.
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公开(公告)号：US11177682B2
公开(公告)日：2021-11-16
申请号：US16827731
申请日：2020-03-24
发明人： Lei Chang , Minli Jia , Hao Sun , Jinfa Zhang
摘要： The present invention relates a single-phase and three-phase compatible circuit and a charge-discharge apparatus. The circuit comprises: a terminal, a first bridge arm, a first switch, a second bridge arm, a switch set, a third bridge arm, a fourth switch, two bus capacitors connected in series, and a fifth switch. The terminal is configured to receive or provide an AC power. When the terminal receives or provides a single-phase AC power, the first switch and the fifth switch are turned on and the first and third terminals of the switch set are electrically connected. The third inductor, the third bridge arm and the two bus capacitors form a half-bridge active filter circuit. A regulation module is electrically connected to the two bus capacitors and the third bridge arm, and controls the third bridge arm based on the voltages of the two bus capacitors.
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公开(公告)号：US20230179108A1
公开(公告)日：2023-06-08
申请号：US17574027
申请日：2022-01-12
发明人： Minli Jia , Hao Sun , Chi Zhang , Jinfa Zhang , Peter Mantovanelli Barbosa
CPC分类号： H02M3/33592 , H02M1/0058
摘要： The present disclosure provides a three-level rectification DC/DC converter including primary and secondary circuits and a resonant tank circuit. A voltage between two primary terminals is a first voltage. The secondary circuit includes a flying capacitor, a switch bridge arm, and a capacitor bridge arm. The switch bridge arm includes four switches serially connected. Two terminals of the flying capacitor are respectively connected between the first and second switches and connected between the third and fourth switches. Two secondary terminals are respectively connected between the second and third switches and connected between two output capacitors of the capacitor bridge arm. In two consecutive periods of the first voltage, the first and second switches are in an on state for a preset time length after two falling edges respectively, and the third and fourth switches are in the on state for the preset time length after two rising edges respectively.
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公开(公告)号：US20230179105A1
公开(公告)日：2023-06-08
申请号：US17573970
申请日：2022-01-12
发明人： Minli Jia , Hao Sun , Chi Zhang , Jinfa Zhang , Peter Mantovanelli Barbosa
CPC分类号： H02M3/33592 , H03B5/08 , H02M1/0009 , H02M1/0025 , H02M1/083
摘要： The present disclosure provides a three-level rectification DC/DC converter including primary and secondary circuits and a resonant tank circuit. A voltage between two primary terminals is a first voltage. The secondary circuit includes a switch bridge arm and a capacitor bridge arm. The switch bridge arm includes four switches serially connected. A node between the first and second switches is connected to the first secondary terminal, a node between the third and fourth switches is connected to the second secondary terminal, and a node between the second and third switches is connected between two capacitors of the capacitor bridge arm. In two consecutive periods of the first voltage, the first and fourth switches are in an on state for a preset time length after two falling edges respectively, and the second and third switches are in the on state for the preset time length after two rising edges respectively.
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公开(公告)号：US11605967B2
公开(公告)日：2023-03-14
申请号：US17144184
申请日：2021-01-08
发明人： Hao Sun , Minli Jia , Jinfa Zhang
IPC分类号： H02J7/02
摘要： The present disclosure provides an on-board charger including a power supply terminal, a switching circuit, a first bridge arm, a second bridge arm, a third bridge arm, a fourth bridge arm, a first bus capacitor, a second bus capacitor, a first switch and a control circuit. The present disclosure can realize a compatibility of a single-phase power supply input or a three-phase power supply input through the cooperation of the switching circuit with the control circuit. Meanwhile, the number of bus capacitors is reduced in the operating state of the single-phase power supply input, accordingly not only the volume and cost of the on-board charger can be reduced, but also the charging power of the on-board charger can be increased, which has an advantage of strong applicability.
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公开(公告)号：US10530173B2
公开(公告)日：2020-01-07
申请号：US16122395
申请日：2018-09-05
发明人： Hao Sun , Minli Jia , Jinfa Zhang
IPC分类号： H02J7/00 , H02J7/02 , H02J5/00 , H02M7/162 , H02M7/17 , B60L53/14 , B60L53/22 , H02M1/10 , H02M1/42 , H02M1/00 , H02M7/5388
摘要： A charging device includes a first auxiliary bridge arm and a second auxiliary bridge arm. The first auxiliary bridge arm is connected between a first port and a second module. The second auxiliary bridge arm is connected between the first port and a third module. If the AC charging power is three-phase, the first module converts a first phase of the AC charging power, and the first auxiliary bridge arm and the second auxiliary bridge arm are disabled. Consequently, the second module converts a second phase of the AC charging power, and the third module converts a third phase of the AC charging power. If the AC charging power is single-phase, at least a first module is used to convert the AC charging power.
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公开(公告)号：US11750103B2
公开(公告)日：2023-09-05
申请号：US17573970
申请日：2022-01-12
发明人： Minli Jia , Hao Sun , Chi Zhang , Jinfa Zhang , Peter Mantovanelli Barbosa
CPC分类号： H02M3/33584 , H02M3/01 , H02M3/33592
摘要： The present disclosure provides a three-level rectification DC/DC converter including primary and secondary circuits and a resonant tank circuit. A voltage between two primary terminals is a first voltage. The secondary circuit includes a switch bridge arm and a capacitor bridge arm. The switch bridge arm includes four switches serially connected. A node between the first and second switches is connected to the first secondary terminal, a node between the third and fourth switches is connected to the second secondary terminal, and a node between the second and third switches is connected between two capacitors of the capacitor bridge arm. In two consecutive periods of the first voltage, the first and fourth switches are in an on state for a preset time length after two falling edges respectively, and the second and third switches are in the on state for the preset time length after two rising edges respectively.
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公开(公告)号：US20230179107A1
公开(公告)日：2023-06-08
申请号：US17574004
申请日：2022-01-12
发明人： Minli Jia , Hao Sun , Chi Zhang , Jinfa Zhang , Peter Mantovanelli Barbosa
CPC分类号： H02M3/33592 , H03B5/08 , H02M1/0025 , H02M1/0009 , H02M1/083
摘要： The present disclosure provides a three-level rectification DC/DC converter including primary and secondary circuits and a resonant tank circuit. A voltage between two primary terminals is a first voltage. The secondary circuit includes two clamping switches, a switch bridge arm, and a capacitor bridge arm. The switch bridge arm includes four switches serially connected. The two clamping switches are connected in series between a node between the first and second switches and a node between the third and fourth switches. Two secondary terminals are respectively connected between the second and third switches and connected between two output capacitors of the capacitor bridge arm. A node between the two clamping switches is connected between the two output capacitors. The second and third switches are at least in an on state for a preset time length after falling and rising edges in a period of the first voltage respectively.
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