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91.发明公开
公开(公告)号：EP4089899A1
公开(公告)日：2022-11-16
申请号：EP22171119.5
申请日：2022-05-02
发明人： LIU, Hong , KONG, Jie , ZHANG, Wen , SONG, Baihui , LU, Cheng , WU, Hongyang
摘要： A power module (100) includes N inverter units (10) outputting N AC voltages and being coupled to N high-frequency AC terminals (20), wherein the N high-frequency AC terminals (20) are cascaded and connected to a post-stage rectifier circuit (30). A phase-shift control method for the power module includes: setting (S31) at least two phase-shift sequences, wherein phase sequence numbers of the N AC voltages of the N inverter units are different in the at least two phase-shift sequences; in one switching period, controlling (S32) the N AC voltages of the N inverter units to shift a first angle according to a first phase-shift sequence of the at least two phase-shift sequences; and in another switching period, controlling (S33) the N AC voltages of the N inverter units to shift the first angle according to a second phase-shift sequence of the at least two phase-shift sequences.
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公开(公告)号：EP4075498A2
公开(公告)日：2022-10-19
申请号：EP22176308.9
申请日：2019-06-17
发明人： HONG, Shouyu , XU, Haibin , CHENG, Wei , CHENG, Juan , WANG, Tao , ZHAO, Zhenqing
IPC分类号： H01L25/07 , H02M7/00 , H05K7/14 , H01L23/498 , H01L23/538
摘要： A power module structure includes a first metal layer (41), a second metal layer (42), a third metal layer (43) and a fourth metal layer (44), wherein the fourth metal layer (44) is connected to the second metal layer (42) via a plurality of connecting bridges (27), each of the connecting bridges (27) is a pillar connecting bridge (27); a plurality of first switches (281), each first switch (281) including a first end connected to the third metal layer (43) and a second end connected to the second metal layer (42); and a plurality of second switches (282), each second switch (282) including a third end connected to the fourth metal layer (44) and a fourth end connected to the first metal layer (41).
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公开(公告)号：EP4000997A1
公开(公告)日：2022-05-25
申请号：EP21198105.5
申请日：2021-09-21
发明人： LU, Cheng , LIU, Hong , HU, Wenfei , KONG, Jie
摘要： Embodiments of the present invention provide a power conversion system and a control method. The power conversion system includes multiple power modules, and each power module includes a first port, a second port, and a third port, where the first port of each power module is connected to an external device, second ports of the power modules are independent of each other and used as independent ports to output power, third ports of the power modules are connected in parallel to form a power bus and power flow of the third port of each power module is bidirectional. Therefore, when loads of output ports are imbalanced, the power bus formed by the third ports connected in parallel realizes power regulating among multiple power modules, so that power input into the power modules through first ports is as equal as possible, which reduces or eliminates a DC link voltage balance problem caused by load imbalance.
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公开(公告)号：EP3920392A1
公开(公告)日：2021-12-08
申请号：EP21171786.3
申请日：2021-05-03
发明人： CHEN, Li , WANG, Changyong , QIU, Aibin
IPC分类号： H02M1/12 , H02M7/5387
摘要： The present disclosure provides a three-phase AC system and a control method thereof. The method includes: receiving (S1) an output signal of the three-phase AC system and obtaining a characteristic value of the output signal according to the output signal; performing (S2) virtual synchronous generator control on the inverter to obtain a fundamental electric potential; extracting (S3) a harmonic component from the output signal and obtaining an error signal according to the harmonic component and a reference value of the harmonic component; controlling (S4) the error signal to obtain a harmonic compensation electric potential; obtaining (S5) a control electric potential by superimposing the harmonic compensation electric potential with the fundamental electric potential; obtaining (S6) a pulse signal by modulating the control electric potential, and obtaining a switching signal of the inverter according to the pulse signal.
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95.发明公开
公开(公告)号：EP3901641A1
公开(公告)日：2021-10-27
申请号：EP21168746.2
申请日：2021-04-16
发明人： HAN, Xu , LIU, Yufei , WU, Haixin , YUAN, Xunyan , SUN, Hao
摘要： Disclosed is an insulation impedance detection circuit (100) for an on-board charger (200) and an insulation impedance detection method (600). The insulation impedance detection circuit (100) comprises a voltage division circuit (10), a biasing circuit (20), an impedance matching circuit (30), a voltage sampling circuit (40) and a controller (50). Terminals of the voltage division circuit (10) are connected to a first AC terminal and a second AC terminal of the on-board charger (200) respectively, and are connected selectively to a first terminal of the impedance matching circuit (30) via a switch (K1). A second terminal of the impedance matching circuit (30) is connected to a first terminal of the biasing circuit (20), a second terminal of the biasing circuit (20) is grounded, and a third terminal of the impedance matching circuit (30) is connected to an input terminal of the voltage sampling circuit (40). An output terminal of the voltage sampling circuit (40) is connected to the controller (50) for outputting an insulation impedance detection signal (Vm) to the controller (50). The controller (50) is configured to determine whether there is an insulation impedance abnormity or not depending on the insulation impedance detection signal (Vm).
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公开(公告)号：EP3886307A1
公开(公告)日：2021-09-29
申请号：EP21174521.1
申请日：2018-06-18
发明人： HONG, Shouyu , CHENG, Juan , WANG, Tao , ZHAO, Zhenqing
摘要： A component structure comprises: a first bus bar (410, 610, 710, 1310), having one end extending to a first plane A to form a first connecting terminal (415, 615, 715, 1315); a second bus bar (420, 620, 720, 1320), comprising a front portion of the second bus bar (421, 621, 721, 1321) and a rear portion of the second bus bar (422, 622, 722, 1322), wherein the front portion of the second bus bar is laminated in parallel with the first bus bar, and the rear portion of the second bus bar is extended to a second plane B to form a second connecting terminal (425, 625, 725, 1325); and an external circuit comprising a third bus bar (430, 630, 730, 1330), wherein the third bus bar is settled in parallel with the rear portion of the second bus bar.
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公开(公告)号：EP3886304A1
公开(公告)日：2021-09-29
申请号：EP21151424.5
申请日：2021-01-13
发明人： SUN, Hao , JIA, Minli , ZHANG, Jinfa
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：EP3855872A1
公开(公告)日：2021-07-28
申请号：EP21152746.0
申请日：2021-01-21
发明人： Hong, Shouyu , Xu, Haibin , Wang, Tao , Tong, Yan , Zhou, Weicheng , Zhou, Ganyu , Chen, Qingdong , Zhao, Zhenqing
IPC分类号： H05K1/02 , H01L25/07 , H05K3/46 , H02M7/00 , H01L23/498 , H01L23/538
摘要： A carrier board (410) is disclosed. The carrier board (410) includes a main body (101), two metal-wiring layers (431, 432) and at least one metal block (421, 422, 423). The main body (101) includes at least two terminals (TP, TN, TO) and a surface (102). The terminals (TP, TN, TO) are disposed on the surface (102). The two metal-wiring layers (431, 432) are disposed on the main body (101) to form two parts of metal traces connected to the two terminals (TP, TN, TO), respectively. The at least one metal block (421, 422, 423) is embedded within the main body (101) and connected to one of the two terminals (TP, TN, TO). A thickness of the two parts of metal traces is less than that of the metal block (421 422, 423). The two terminals (TP, TN, TO) connected by the two parts of metal traces have a loop inductance less than or equal to 1.4 nH calculated at a frequency greater than 1 MHz.
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公开(公告)号：EP3855590A1
公开(公告)日：2021-07-28
申请号：EP21151016.9
申请日：2021-01-11
发明人： SHEN, Guoqiao , ZHANG, Jinfa , ZHOU, Yuhu
IPC分类号： H02H3/087
摘要： The invention discloses an overcurrent protection circuit, coupled to a DC bus between first and second DC ends, the DC bus including positive bus and negative bus, and the circuit including: a main protection branch connected in series with the positive or negative bus, and including first and second protection switches connected in series and connected to a first node; a freewheeling switch branch having two ends, one end being connected to the first node, the other end being connected to an opposite bus to the main protection branch; a detection unit coupled to the DC bus for detecting a voltage or a current of the DC bus to output an overcurrent detection signal; and a control unit coupled to the detection unit and the main protection branch, and configured to control the main protection branch according to the overcurrent detection signal.
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公开(公告)号：EP3855488A1
公开(公告)日：2021-07-28
申请号：EP21152753.6
申请日：2021-01-21
发明人： Hong, Shouyu , Xu, Haibin , Wang, Tao , Tong, Yan , Zhou, Weicheng , Zhou, Ganyu , Chen, Qingdong , Zhao, Zhenqing
IPC分类号： H01L23/538 , H01L25/07 , H05K1/02 , H05K3/46 , H01L23/36 , H02M7/00 , H01L23/498
摘要： A power module (1, 1a, 1b, 1c, Id, 1e, If, 1g, 1h, 1i, 1j, 1k, 1m, 1n, 1o, 1p, 1q, 1r, Is, It, 1u, 1v, 1w, 1x, 1y, 1z, 10a, 10b, 10c, 10d, 10e, 10f) is disclosed and includes a carrier board (410) and two switches (451, 451', 452, 452'). The carrier board (410) includes a main body (101), two metal-wiring layers (431, 432) and at least one metal block (421, 422, 423. The main body (101) includes at least two terminals (TP, TN, TO) and a surface (102). The terminals (TP, TN, TO) are disposed on the surface (102). The two metal-wiring layers (431, 432) are disposed on the main body (101) to form two parts of metal traces connected to the two terminals (TP, TN, TO), respectively. The at least one metal block (421, 422, 423) is embedded within the main body (101) and connected to one of the two terminals (TP, TN, TO). A thickness of the two parts of metal traces is less than that of the metal block (421 422, 423). Two switches (451, 452, 451', 452') are disposed on the upper surface (102) and connected to each other in series through the at least two terminals (TP, TN, TO) to form a bridge arm.
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