公开(公告)号：US20210351684A1

公开(公告)日：2021-11-11

申请号：US17385789

申请日：2021-07-26

Applicant: DENSO CORPORATION

Inventor： Shusei NISHIMURA ,  Seiji IYASU ,  Hisashi UMEMOTO ,  Atsushi FUKAYA

IPC: H02K47/04 ,  H02J7/00

Abstract: A power conversion apparatus includes: a rotating electric machine that has a winding; an inverter that has a series-connection body of an upper arm switch and a lower arm switch; and a capacitor that is connected in parallel to the series-connection body. The power conversion apparatus includes: a connection path that, in a first storage battery and a second storage battery that are connected in series, electrically connects the winding with both a negative-electrode side of the first storage battery and a positive-electrode side of the second storage battery; and a control unit that controls switching of the upper arm switch and the lower arm switch such that a current flows between the first storage battery and the second storage battery through the inverter, the winding, and the connection path.

公开(公告)号：US20250096664A1

公开(公告)日：2025-03-20

申请号：US18962280

申请日：2024-11-27

Applicant: DENSO CORPORATION

Inventor： Shusei NISHIMURA ,  Seiji IYASU ,  Hisashi UMEMOTO ,  Atsushi FUKAYA

IPC: H02K47/04 ,  H02J7/00 ,  H02J7/14

Abstract: A power conversion apparatus includes: a rotating electric machine that has a winding; an inverter that has a series-connection body of an upper arm switch and a lower arm switch; and a capacitor that is connected in parallel to the series-connection body. The power conversion apparatus includes: a connection path that, in a first storage battery and a second storage battery that are connected in series, electrically connects the winding with both a negative-electrode side of the first storage battery and a positive-electrode side of the second storage battery; and a control unit that controls switching of the upper arm switch and the lower arm switch such that a current flows between the first storage battery and the second storage battery through the inverter, the winding, and the connection path.

公开(公告)号：US20230086550A1

公开(公告)日：2023-03-23

申请号：US17994470

申请日：2022-11-28

Applicant: DENSO CORPORATION

Inventor： Masaki UCHIYAMA ,  Daisuke KURODA ,  Atsushi FUKAYA ,  Keiya TANI

IPC: H02M7/5387 ,  H02J7/00 ,  H02M1/00 ,  H02M1/08 ,  H02P27/06 ,  H01M10/42 ,  H01M50/51 ,  H01M10/46 ,  H01M10/48

Abstract: The present disclosure includes an inverter connected to a power supply unit via a positive electrode side electrical path and a negative electrode side electrical path and including switching elements, a rotary electric machine including windings connected to each other at a neutral point and inputting and outputting power from and to the power supply unit via the inverter, a connection path electrically connecting an intermediate point between the storage batteries of the power supply unit to the neutral point of the windings, and a device including a first terminal and a second terminal enabling energization between the power supply unit and the device. The first terminal is connected to the connection path, and the second terminal is connected to at least one of the positive electrode side electrical path and the negative electrode side electrical path.

公开(公告)号：US20220231619A1

公开(公告)日：2022-07-21

申请号：US17712540

申请日：2022-04-04

Applicant: DENSO CORPORATION

Inventor： Seiji IYASU ,  Syusei NISHIMURA ,  Atsushi FUKAYA

IPC: H02M7/5387 ,  H02P27/06 ,  H02M1/08 ,  H03K17/082

Abstract: A power converter includes a connection path electrically connecting a negative side of a first rechargeable battery, a positive side of a second rechargeable battery electrically connected in series with the first rechargeable battery, and a neutral point of windings of a rotating electric machine. The power converter further includes a control unit configured to perform switching control of an upper-arm switch and a lower-arm switch for each phase in order to transfer energy between the first and second rechargeable batteries by conducting current between the first and second rechargeable batteries via an inverter, the windings, and the connection path.

公开(公告)号：US20220123686A1

公开(公告)日：2022-04-21

申请号：US17565140

申请日：2021-12-29

Applicant: DENSO CORPORATION

Inventor： Mitsutaka ITO ,  Atsushi FUKAYA ,  Hisashi UMEMOTO

IPC: H02P27/08 ,  H02P29/60 ,  H01M10/48 ,  H01M10/42 ,  H01M10/46 ,  H01M10/0525 ,  H01M50/507

Abstract: An electric power conversion apparatus includes a rotating electric machine including armature windings, a first inverter connecting the armature windings with a first storage battery, a second inverter connecting the armature windings with a second storage battery, a changeover switch configured to connect or disconnect between first and second positive buses or between first and second negative buses, and an operating unit configured to perform, with the changeover switch being in an ON state, first and second energization processes alternately. In the first energization process, electric current is supplied from the first storage battery to the second storage battery via the first inverter, at least one of the armature windings and the second inverter. In the second energization process, electric current is supplied from the second storage battery to the first storage battery via the second inverter, at least one of the armature windings and the first inverter.