公开(公告)号：US20240106367A1

公开(公告)日：2024-03-28

申请号：US18527515

申请日：2023-12-04

Applicant: DENSO CORPORATION

Inventor： Keiya TANI

IPC: H02P27/06 ,  B60L1/00 ,  B60L15/00 ,  B60L53/16 ,  H02J7/00 ,  H02J7/06

CPC classification number: H02P27/06 ,  B60L1/003 ,  B60L15/007 ,  B60L53/16 ,  H02J7/0013 ,  H02J7/0042 ,  H02J7/06 ,  H02J2207/20

Abstract: A power conversion device includes an inverter, rotating electrical machine, a positive electrode side main path, a negative electrode side main path, a neutral point path, switches provided on the positive electrode side main path, the negative electrode side main path and the neutral point path, a first connection path that connects a first target path that is one of the positive electrode side main path, the negative electrode side main path and the neutral point path, and a first connection terminal of electric equipment, and a second connection path that connects a second target path that is one of the positive electrode side main path, the negative electrode side main path and the neutral point path other than the first target path, and a second connection terminal of the electric equipment. In the power conversion device, for example, a configuration where the first connection path is connected on the electric storage device side of the switch in the first target path, is used.

公开(公告)号：US20240088702A1

公开(公告)日：2024-03-14

申请号：US18517157

申请日：2023-11-22

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SHIRAKAWA ,  Keiya TANI ,  Shunichi KUBO

IPC: H02J7/02 ,  H02M3/335

CPC classification number: H02J7/02 ,  H02M3/33569 ,  H02J2207/20

Abstract: An electrical charging apparatus working to electrically charge an electrical storage device includes an electrical power converter and a controller. The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.

公开(公告)号：US20230327596A1

公开(公告)日：2023-10-12

申请号：US18200216

申请日：2023-05-22

Applicant: DENSO CORPORATION

Inventor： Syusei NISHIMURA ,  Masahito FUJIEDA ,  Keiya TANI

IPC: H02P27/06 ,  H02M7/537 ,  H02J7/00 ,  B60L50/51

CPC classification number: H02P27/06 ,  B60L50/51 ,  H02J7/0013 ,  H02M7/537 ,  B60L2200/10 ,  B60L2200/32 ,  H02J7/0048

Abstract: A power conversion apparatus includes a rotating electrical machine equipped with star-connected windings and an inverter equipped with series-connected units made up of upper arm switches and lower arm switches. The power conversion apparatus also includes a connecting path which electrically connects a negative terminal of a first electrical storage, a positive terminal of a second electrical storage connected in series with the first electrical storage, and a neutral point of the windings together, a connecting switch which is disposed in the connecting path, and a determiner which works to determine whether the connecting switch is required to be turned on, and a controller which turns on the connecting switch when it is determined by the determiner that the connecting switch is required to be turned on to execute a switching control operation on the upper arm switches and the lower arm switches.

公开(公告)号：US20240174089A1

公开(公告)日：2024-05-30

申请号：US18432844

申请日：2024-02-05

Applicant: DENSO CORPORATION

Inventor： Keiya TANI ,  Shunichi KUBO

IPC: B60L50/51 ,  B60L50/60 ,  H02M1/088 ,  H02M7/5387

CPC classification number: B60L50/51 ,  B60L50/66 ,  H02M1/088 ,  H02M7/53873 ,  B60L2210/42

Abstract: A power conversion device is applicable to three or more charge storage units connected in series. The power conversion device includes: a rotating electric machine including a stator winding; an inverter including upper and lower arm switches and connecting the stator winding and the charge storage units; a high potential path connected to a high potential terminal of the upper arm switch; a low potential path connected to a low potential terminal of the lower arm switch; a neutral point path connected to a neutral point of the stator winding; and neutral point switches installed individually corresponding to cell connection points each between a positive electrode terminal and a negative electrode terminal of adjacent charge storage units in the charge storage units, the neutral point switches connecting the cell connection points and the neutral point 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.