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公开(公告)号：US20190312499A1
公开(公告)日：2019-10-10
申请号：US16153279
申请日：2018-10-05
发明人： Tae Jong Ha , In Yong Yeo , Dae Woo Lee , Youn Sik Lee
摘要： A power conversion system for vehicles is provided. The system includes a first energy storage device and a charging device with a rectification circuit for rectifying AC power to generate a DC link voltage. A DC-DC converter converts the level of the DC link voltage to generate a charging voltage of the first energy storage device. A low voltage DC-DC converter selectively down-converts one of the voltage of the first energy storage device and the DC link voltage to output a low voltage having a predetermined level. The low voltage DC-DC converter selectively converts one of the voltage of the first energy storage device and the DC link voltage into the low voltage based on whether the first energy storage device is charged according to input of the AC power.
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公开(公告)号：US10404179B1
公开(公告)日：2019-09-03
申请号：US16132720
申请日：2018-09-17
发明人： Dae Woo Lee , Woo Young Lee , Min Seong Choi , Tae Jong Ha , Jae Eun Cha , Jin Myeong Yang , In Yong Yeo
摘要： A low voltage DC-DC converter for a vehicle includes: a switching circuit including a plurality of capacitors and a plurality of switches and converting a high voltage output from a high voltage battery into an AC voltage; a transformer converting the AC voltage output from the switching circuit into a low voltage; a current sensor measuring a current value output from the transformer; and a controller comparing the current value measured by the current sensor with a reference value to determine whether a current mode is a continuous current mode or a discontinuous current mode, and controlling one of the plurality of switches to be turned on or off as the determination result.
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公开(公告)号：US11230201B2
公开(公告)日：2022-01-25
申请号：US16679469
申请日：2019-11-11
发明人： Dae Woo Lee , Min Seong Choi , In Yong Yeo , Tae Jong Ha , Jin Myeong Yang , Woo Young Lee
摘要： A system of charging a battery of a vehicle is provided. The system includes a charger having a direct current (DC) capacitor to which a DC voltage converted from an AC charge voltage is applied and a first DC converter that converts a magnitude of a voltage of the DC capacitor. A first battery is connected to the first DC converter and is charged with a DC voltage converted by the first DC converter. A second DC converter is connected to the battery and converts a magnitude of a voltage of the battery. A second battery receives a DC voltage converted by the second DC converter. A controller charges the DC capacitor up to a predetermined initial charge voltage using power stored in the second battery by operating the second DC converter and the first DC converter in a backward direction before the AC charge voltage is provided to the charger.
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公开(公告)号：US11214158B2
公开(公告)日：2022-01-04
申请号：US16746082
申请日：2020-01-17
发明人： Dae Woo Lee , Jae Eun Cha , Byung Gu Kang , Tae Jong Ha
摘要： A method of controlling charge of a vehicle battery includes: determining, by a control unit, whether a high voltage battery and a low voltage battery are charged in a first charging mode, a second charging mode, or a third charging mode; and charging at least one of the high voltage battery or the low voltage battery by controlling a first full-bridge circuit unit, a second full-bridge circuit unit, and a low voltage direct current (DC) converter unit based on the determined first, second or third charging mode.
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公开(公告)号：US11728735B2
公开(公告)日：2023-08-15
申请号：US17085658
申请日：2020-10-30
发明人： Dae Woo Lee , Byung Gu Kang , Tae Jong Ha
CPC分类号： H02M3/1588 , H01F27/2804 , H01F2027/2809 , H01F2027/2819
摘要： A converter using a planar transformer includes an input device that receives a first voltage, a transformer including a first planar transformer and a second planar transformer that reduce the first voltage, and an output device that outputs the first voltage as a second voltage, wherein the first voltage is greater than the second voltage, and the input device provides a current to a primary winding coil of each of the first planar transformer and the second planar transformer through a first current path and a second current path in which current directions are different with each other, and includes a plurality of inductors connected in parallel with the primary winding coil of each of the first planar transformer and the second planar transformer.
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公开(公告)号：US11335494B2
公开(公告)日：2022-05-17
申请号：US16510036
申请日：2019-07-12
发明人： In Yong Yeo , Tae Jong Ha , Dae Woo Lee , Youn Sik Lee
摘要： A planar transformer is disclosed. The planar transformer includes a first core, a second core, a third core, and a fourth core, which are sequentially disposed; a primary coil unit having multiple primary substrates through which the first to fourth cores penetrate and on which primary coil patterns are formed such that magnetic flux is generated in a first direction in the first and fourth cores and in a second direction in the second and third cores; and a secondary coil unit having multiple secondary substrates through which the first to fourth cores penetrate and on which secondary coil patterns are formed, the secondary coil patterns formed on a periphery of the first to fourth cores such that current induced by the magnetic flux flowing in the first to fourth cores flows therein, wherein the multiple primary and secondary substrates form a multi-layer structure.
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公开(公告)号：US10965205B2
公开(公告)日：2021-03-30
申请号：US16153279
申请日：2018-10-05
发明人： Tae Jong Ha , In Yong Yeo , Dae Woo Lee , Youn Sik Lee
摘要： A power conversion system for vehicles is provided. The system includes a first energy storage device and a charging device with a rectification circuit for rectifying AC power to generate a DC link voltage. A DC-DC converter converts the level of the DC link voltage to generate a charging voltage of the first energy storage device. A low voltage DC-DC converter selectively down-converts one of the voltage of the first energy storage device and the DC link voltage to output a low voltage having a predetermined level. The low voltage DC-DC converter selectively converts one of the voltage of the first energy storage device and the DC link voltage into the low voltage based on whether the first energy storage device is charged according to input of the AC power.
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公开(公告)号：US20210078422A1
公开(公告)日：2021-03-18
申请号：US16679469
申请日：2019-11-11
发明人： Dae Woo Lee , Min Seong Choi , In Yong Yeo , Tae Jong Ha , Jin Myeong Yang , Woo Young Lee
摘要： A system of charging a battery of a vehicle is provide. The system includes a charger having a DC capacitor to which a DC voltage converted from an AC charge voltage is applied and a first DC converter that converts the magnitude of a voltage of the DC capacitor. A first battery is connected to the first DC converter and is charged with a DC voltage converted by the first DC converter. A second DC converter is connected to the battery and converts a magnitude of a voltage of the battery. A second battery receives a DC voltage converted by the second DC converter. A controller charges the DC capacitor up to a predetermined initial charge voltage using power stored in the second battery by operating the second DC converter and the first DC converter in a backward direction before the AC charge voltage is provided to the charger.
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公开(公告)号：US20200336080A1
公开(公告)日：2020-10-22
申请号：US16518093
申请日：2019-07-22
发明人： Jin Young Yang , Gyu Yeong Choe , Min Seong Choi , Tae Jong Ha , Young Jin Kim , Jae Eun Cha , Dae Woo Lee , In Yong Yeo
摘要： An integrated converter is provided. The integrated converter includes a high-voltage charger having a power factor correction (PFC) device configured to compensate a low-frequency ripple and convert an alternating current (AC) voltage of a commercial power source into a direct current (DC) voltage. A first switching module is configured to convert the DC voltage output from the PFC device into an AC voltage and charge a high-voltage battery using the commercial power source and a low-voltage charger that is connected between the PFC device and the first switching module and the high-voltage charger configured to charge a low-voltage battery using the commercial power source or the high-voltage battery.
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公开(公告)号：US10250117B2
公开(公告)日：2019-04-02
申请号：US15795685
申请日：2017-10-27
发明人： Youn Sik Lee , Dae Woo Lee , Tae Jong Ha , In Yong Yeo , Byeong Seob Song
摘要： The present disclosure provides a converter controlling apparatus including a plurality of switching devices capable of controlling a pulse width modulation (PWM), the converter controlling apparatus including: an efficiency determiner configured to variably change resistance of a gate terminal, wherein a PWM signal for controlling the PWM of the switching device is applied to a gate terminal based on an amount of current flowing through the converter.
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