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公开(公告)号：US20250047197A1
公开(公告)日：2025-02-06
申请号：US18762133
申请日：2024-07-02
Applicant: Yazaki Corporation
Inventor： Daisuke MAEZAKI , Michito ENOMOTO , Ryo GONDO , Yoshiya OHNUMA , Shohei KOMEDA , Shunsuke TAKUMA
Abstract: A charger includes a rectifier, a DC/DC converter, and a power ripple absorption circuit including, wherein a first diode is connected between an inductor of the power ripple absorption circuit and the rectifier, a second diode is connected between the inductor and the rectifier, a capacitor and a first switch are connected in series between a first line and a second line, a third diode is connected between a line connecting the capacitor and the first switch and the inductor, a second switch is connected between a line connecting the inductor and the third diode and the second line, and wherein a summation of a power output from the alternating current power supply and a power output from the capacitor is controlled to become constant, and the first switch is kept ON in a discharge period in which an instantaneous power is lower than an average power.
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公开(公告)号：US20240291383A1
公开(公告)日：2024-08-29
申请号：US18581834
申请日：2024-02-20
Applicant: Yazaki Corporation
Inventor： Ryo GONDO , Michito ENOMOTO , Daisuke MAEZAKI , Yoshiya OHNUMA , Shohei KOMEDA , Shunsuke TAKUMA
CPC classification number: H02M1/4233 , H02J7/00711 , H02J7/06 , H02J7/345 , H02M1/4241
Abstract: A charger is configured such that in case where control of switching of a DC/DC converter includes a first mode and a second mode, a dead time is provided between the first mode and the second mode when switching from the first mode to the second mode and a first switch of a power pulsation absorbing circuit is controlled to be in an off-state during a time until expiration of a predetermined time after start of the dead time, wherein in the first mode, at least one switch of switches of the DC/DC converter is switched on, at least one switch of the switches of the DC/DC converter is switched off, and the first switch of the power pulsation absorbing circuit is switched off, and wherein in the second mode, the switch of the DC/DC converter which is switched off in the first mode is switched on, and the first switch of the power pulsation absorbing circuit is switched on.
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公开(公告)号：US20240291309A1
公开(公告)日：2024-08-29
申请号：US18583219
申请日：2024-02-21
Applicant: Yazaki Corporation
Inventor： Ryo GONDO , Michito ENOMOTO , Daisuke MAEZAKI , Yoshiya OHNUMA , Shunsuke TAKUMA , Shohei KOMEDA
CPC classification number: H02J7/06 , H02M3/33573 , H02M3/33584 , H02J2207/20
Abstract: A charger is configured such that when an output power value of a DC/DC converter is smaller than a first power value, a switch of the DC/DC converter and a first switch of a power pulsation absorbing circuit are controlled according to a discontinuous current mode during one entire period of an AC voltage inputted from a AC power supply; and wherein when the output power value of the DC/DC converter is equal to or greater than a second power value, the switch of the DC/DC converter and the first switch of the power pulsation absorbing circuit are controlled according to a continuous current mode during one entire period of the AC voltage.
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公开(公告)号：US20240072666A1
公开(公告)日：2024-02-29
申请号：US18351066
申请日：2023-07-12
Applicant: Yazaki Corporation
Inventor： Noritaka TAGUCHI , Ryo GONDO , Daisuke MAEZAKI , Yoshiya OHNUMA , Shunsuke TAKUMA , Shohei KOMEDA
CPC classification number: H02M3/158 , H02J7/02 , H02M1/385 , H02M3/33573
Abstract: The control of the switches S21 to S28 of the DC/DC converter 120 includes a first mode in which all of the switches S21 to S28 of the DC/DC converter 120 are OFF and a plurality of second modes in which at least one of the switches S21 to S28 of the DC/DC converter 120 is ON, and when switching from the first mode to one of the plurality of second modes, a dead time Td is not provided between the first mode and the one of the plurality of second modes.
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