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公开(公告)号：US11990270B2
公开(公告)日：2024-05-21
申请号：US17533586
申请日：2021-11-23
发明人： Tae Ho Bang , Deok Kwan Choi , Won Gon Kim , Min Heo , Ji Hoon Park , Kang Min Kim , A Ra Lee , Hyun Woo Shim , Du Ho Kim , Soo Min Jeon
CPC分类号： H01F27/427 , H01F38/32
摘要： An aspect of the present disclosure provides a bus bar as a winding in a core of a transformer includes multiple sub-bars arranged horizontally and connected in parallel so as to minimize an AC current in the transformer, and the sub-bars have different widths and thus resistances or impedances with respect to a current flowing through the sub-bars are the same. Another aspect of the present disclosure provides a method of designing a bus bar for resistance or impedance matching between multiple sub-bars included in the bus bar to share a current to minimize an AC current in the transformer. Another aspect of the present disclosure provides a transformer, for a DC-DC converter for use in a vehicle, which is manufactured by the method of designing a bus bar.
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公开(公告)号：US11431253B2
公开(公告)日：2022-08-30
申请号：US17139483
申请日：2020-12-31
发明人： Won Gon Kim , Deok Kwan Choi , Kang Min Kim , Min Heo , A Ra Lee , Tae Ho Bang , Hyun Woo Shim , Du Ho Kim , Soo Min Jeon , Ji Hoon Park
摘要： A Low-voltage DC-DC Converter (LDC) includes a new bidirectional isolated LDC, in which two converters with different power circuit topologies operate in parallel in order to enable both buck mode and boost mode. The two applied converters are a phase-shift full-bridge converter with full-bridge synchronous rectification and an active-clamp forward converter. According to the present invention, it is possible to achieve the advantages of both a phase-shifted full-bridge converter with full-bridge synchronous rectification applied and an active clamping forward converter. Thus, it is possible to minimize output voltage and current ripples, thereby improving the quality of the LDC output power while minimizing electromagnetic waves generated while a product is operating.
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公开(公告)号：US20220200454A1
公开(公告)日：2022-06-23
申请号：US17139483
申请日：2020-12-31
发明人： Won Gon Kim , Deok Kwan Choi , Kang Min Kim , Min Heo , A Ra Lee , Tae Ho Bang , Hyun Woo Shim , Du Ho Kim , Soo Min Jeon , Ji Hoon Park
摘要： Provided is a new LDC to satisfy the recent requirements for a bidirectional large-capacity isolated LDC (DC-DC converter). The present disclosure provides a new bidirectional isolated LDC, in which two converters with different power circuit topologies operate in parallel in order to enable both buck mode and boost mode. The two applied converters are a phase-shift full-bridge converter with full-bridge synchronous rectification and an active-clamp forward converter. According to the present invention, it is possible to achieve the advantages of both a phase-shifted full-bridge converter with full-bridge synchronous rectification applied and an active clamping forward converter. Thus, it is to possible to minimize output voltage and current ripples, thereby improving the quality of the LDC output power while minimizing electromagnetic waves generated while a product is operating.
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4.发明授权公开(公告)号：US11870360B2
公开(公告)日：2024-01-09
申请号：US17551819
申请日：2021-12-15
发明人： Du Ho Kim , Deok Kwan Choi , Min Heo , Kang Min Kim , Soo Min Jeon , A Ra Lee , Won Gon Kim , Ji Hoon Park , Hyun Woo Shim , Tae Ho Bang
CPC分类号： H02M3/33584 , H02J7/007 , H02M1/0009 , B60L53/20 , B60L2210/10 , H02J2207/20 , H02M1/44
摘要： The bidirectional insulating DC-DC converter shares high/low voltage terminals, a cooling passage, a housing, and a control board, and two independent step-down circuit (10) and step-up circuit (20) are formed in parallel to perform a bidirectional DC power conversion. A high voltage applied from a high voltage battery HV is stepped down through the step-down circuit (10) and output to a low voltage battery LV. On the other hand, a low voltage applied from the low voltage battery LV is stepped up through the step-up circuit (20) and output to the high voltage battery HV. The step-down circuit (10) is formed as an active clamp forward converter circuit, and the step-up circuit (20) is formed as an active clamp flyback converter circuit.
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公开(公告)号：US11585856B2
公开(公告)日：2023-02-21
申请号：US16554215
申请日：2019-08-28
发明人： Min Heo
IPC分类号： G01R31/367 , H02M3/156 , G01R31/389 , H02J7/00 , G01R31/374
摘要： A battery condition monitoring apparatus includes a measurer configured to measure a charging current which is an internal current of a converter and is charged into a sub-battery, a charging voltage of the converter, and an ambient temperature of a vehicle, an impedance calculator configured to an impedance of the sub-battery on basis of a voltage and a current each measured by the measurer, and a determiner configured to determine a condition of the sub-battery by using the ambient temperature of the vehicle and the impedance of the sub-battery.
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公开(公告)号：US11913994B2
公开(公告)日：2024-02-27
申请号：US17548953
申请日：2021-12-13
发明人： Min Heo
IPC分类号： G01R31/367 , G01R31/374 , G01R31/389 , H02J7/00 , H02M3/156
CPC分类号： G01R31/367 , G01R31/374 , G01R31/389 , H02J7/00 , H02M3/156 , H02J2207/20
摘要： A battery condition monitoring apparatus includes a measurer configured to measure a charging current which is an internal current of a converter and is charged into a sub-battery, a charging voltage of the converter, and an ambient temperature of a vehicle, an impedance calculator configured to an impedance of the sub-battery on basis of a voltage and a current each measured by the measurer, and a determiner configured to determine a condition of the sub-battery by using the ambient temperature of the vehicle and the impedance of the sub-battery.
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公开(公告)号：US11757364B2
公开(公告)日：2023-09-12
申请号：US17532494
申请日：2021-11-22
发明人： Hyun Woo Shim , Deok Kwan Choi , Won Gon Kim , Min Heo , Kang Min Kim , A Ra Lee , Tae Ho Bang , Ji Hoon Park , Du Ho Kim , Soo Min Jeon
CPC分类号： H02M3/33584 , B60L53/20 , B60L58/20 , H02M1/0009 , B60L2210/12 , B60L2210/14 , H02M3/3353
摘要： The present disclosure relates to a new bidirectional low voltage DC-DC converter (LDC), that is, a DC-DC converter capable of satisfying a safety level required for an eco-friendly vehicle and an autonomous vehicle and improving power conversion performance, and a method and an apparatus for controlling the same. The LDC proposed in the present disclosure is a new concept bidirectional LDC in which a plurality of converters having the same power circuit topology are subjected to a parallel interleaving operation so as to enable both a buck operation and a boost operation, satisfy a high safety level, and improve power conversion performance. To this end, a plurality of bidirectional active-clamp flyback converters (for example, two or more bidirectional active-clamp flyback converters) are connected in parallel and are interleaved and controlled by a controller (for example, a microcomputer).
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8.发明授权公开(公告)号：US11329570B1
公开(公告)日：2022-05-10
申请号：US17135811
申请日：2020-12-28
发明人： Min Heo , Ji Hoon Park , Du Ho Kim , Soo Min Jeon , Deok Kwan Choi , Won Gon Kim , Kang Min Kim , A Ra Lee , Tae Ho Bang , Hyun Woo Shim
摘要： The present disclosure relates to a high electric power density bidirectional isolated low voltage DC-DC converter (LDC) assembly, in which a large-capacity bidirectional isolated LDC circuit is packaged in consideration of a flow of electric power so as to use components in common and minimize an internal dead space, and a cooling structure thereof. LDC assembly includes a power board subassembly (100) including the high voltage stage, a part of the buck circuit, and the boost circuit; a transformer subassembly (200) including a transformer of the buck circuit; an output power board subassembly (300) including a part of the buck circuit; and an EMC filter subassembly (400) including an EMC filter included in the low voltage stage.
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公开(公告)号：US11884171B2
公开(公告)日：2024-01-30
申请号：US17532525
申请日：2021-11-22
发明人： Ji Hoon Park , Deok Kwan Choi , Won Gon Kim , Kang Min Kim , Min Heo , Tae Ho Bang , Du Ho Kim , Hyun Woo Shim , Soo Min Jeon , A Ra Lee
CPC分类号： B60L53/20 , B60L58/20 , H02M1/084 , H02M1/14 , H02M3/33569 , B60L2210/10
摘要： A low-voltage DC-DC converter (LDC) includes: an N-phase power circuit configured by connection of N DC-DC converters in parallel between a high-voltage (HV) battery and a low-voltage (LV) battery; and one output capacitor commonly connected to an output of each phase DC-DC converter. Each phase of the N-phase power circuit is controlled in an interleaving manner which delays a phase by 360°/N. Here, each N-phase power circuit is controlled by switching at a frequency of [(a frequency at which the parasitic resistance (equivalent series resistance (ESR)) of the output capacitor is minimized)/N]. The parasitic resistance of the output capacitor of the LDC can be minimized. Accordingly, a lifespan of a battery can be improved and efficiency of the DC-DC converter can be increased through the reduction of the equivalent series resistance (ESR) of the output capacitor.
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10.发明申请公开(公告)号：US20220190734A1
公开(公告)日：2022-06-16
申请号：US17551819
申请日：2021-12-15
发明人： Du Ho Kim , Deok Kwan Choi , Min Heo , Kang Min Kim , Soo Min Jeon , A Ra Lee , Won Gon Kim , Ji Hoon Park , Hyun Woo Shim , Tae Ho Bang
摘要： The bidirectional insulating DC-DC converter shares high/low voltage terminals, a cooling passage, a housing, and a control board, and two independent step-down circuit (10) and step-up circuit (20) are formed in parallel to perform a bidirectional DC power conversion. A high voltage applied from a high voltage battery HV is stepped down through the step-down circuit (10) and output to a low voltage battery LV. On the other hand, a low voltage applied from the low voltage battery LV is stepped up through the step-up circuit (20) and output to the high voltage battery HV. The step-down circuit (10) is formed as an active clamp forward converter circuit, and the step-up circuit (20) is formed as an active clamp flyback converter circuit.
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