公开(公告)号：US20220302737A1

公开(公告)日：2022-09-22

申请号：US17678024

申请日：2022-02-23

Applicant: HONDA MOTOR CO., LTD.

Inventor： Arata OHISHI ,  Hirokazu OGUMA ,  Yasuo YAMADA ,  Minoru NAGASAWA ,  Yoshihiro KANAMARU

IPC: H02J7/00 ,  G01R31/3835 ,  B60L53/20 ,  B60L58/18

Abstract: A power supply system includes: a first power circuit having a first battery and a first power line; a second power circuit having a second battery and a second power line; a voltage converter; a power converter; a first voltage acquisition unit which acquires a first closed circuit voltage lower limit CCVmin1 of the first battery; a second voltage acquisition unit which acquires a second closed circuit voltage lower limit CCVmin2 of the second battery; and a power control unit which operates the second power circuit based on a requested power, in which the power control unit isolates the second battery from the second power lines, in a case of a voltage difference between the first closed circuit voltage lower limit CCVmin1 and the second closed circuit voltage lower limit CCVmin2 becoming less than a first voltage threshold value A while output limitation of the second battery is being requested.

公开(公告)号：US20220302736A1

公开(公告)日：2022-09-22

申请号：US17678017

申请日：2022-02-23

Applicant: HONDA MOTOR CO., LTD.

Inventor： Minoru NAGASAWA ,  Hirokazu OGUMA ,  Arata OHISHI ,  Yasuo YAMADA ,  Yoshihiro KANAMARU

IPC: H02J7/00 ,  B60L53/20 ,  B60L58/18

Abstract: A power supply system includes: a first power circuit having a first battery, a second power circuit having a second battery, a voltage converter which converts voltage between the first power circuit and the second power circuit, a power converter which converts power between the first power circuit and the drive motor, a power control unit which controls charge/discharge of the first and second batteries by operating the voltage converter and the power converter, a first voltage parameter acquisition unit which calculates an effective value for the closed circuit voltage of the first battery as a first voltage parameter, a second voltage parameter acquisition unit which calculates the static voltage of the second battery as a second voltage parameter, in which the power control unit causes power to discharge from the second battery so that the second voltage parameter becomes no more than the first voltage parameter.

公开(公告)号：US20180024173A1

公开(公告)日：2018-01-25

申请号：US15655242

申请日：2017-07-20

Applicant: HONDA MOTOR CO., LTD.

Inventor： Katsuyoshi KAKINUMA ,  Minoru NAGASAWA

IPC: G01R19/165 ,  B60W30/192 ,  F02D17/00 ,  G01R31/36 ,  F02D41/04

CPC classification number: G01R19/16542 ,  B60W30/192 ,  B60W2520/04 ,  F02D17/00 ,  F02D41/042 ,  F02D41/06 ,  F02D41/22 ,  F02D2200/503 ,  G01R31/3693

Abstract: The power supply determining part determines whether there is a power supplied from outside of the vehicle to the battery at start-up of the engine. The alarming part alarms to prompt a driver to manually operate the automatic stop control part when it is determined that there is a power supplied from the outside by the power supply determining part.

公开(公告)号：US20220185116A1

公开(公告)日：2022-06-16

申请号：US17643835

申请日：2021-12-12

Applicant: HONDA MOTOR CO., LTD.

Inventor： Hirokazu OGUMA ,  Yasuo YAMADA ,  Arata OHISHI ,  Minoru NAGASAWA ,  Yoshihiro KANAMARU ,  Yoshihisa KATO

IPC: B60L3/00 ,  B60L58/12 ,  B60L58/20

Abstract: A power supply system includes power circuit which connects first and second batteries with a drive motor, and a management ECU which controls transfer of power between the batteries and the drive motor. The management ECU limits the output power of the second battery to no more than a second output upper limit, during combined output travel which drives the drive motor by way of the combined output of the first and second batteries. In addition, the management ECU sets the second output upper limit to a second maximum output of the second battery in the case of the first SOC of the first batter being greater than a remaining amount warning threshold, and sets the second output upper limit to a range extending upper limit which is smaller than the second maximum output, in the case of the first SOC being less than the remaining amount warning threshold.