公开(公告)号：US20220074163A1

公开(公告)日：2022-03-10

申请号：US17416458

申请日：2019-11-20

Applicant: Yanmar Power Technology Co., Ltd.

Inventor： Jun Terashima ,  Kensuke Kaneda

IPC: E02F3/32 ,  E02F9/08 ,  E02F9/20 ,  B60K1/04 ,  B60L50/40 ,  B60L50/50 ,  B60L53/00 ,  B60L55/00

Abstract: A hydraulic shovel is provided with a lower travelling body and an upper revolving body revolvably disposed on the lower travelling body. The hydraulic shovel is also provided with a motor disposed on the upper revolving body for driving the hydraulic shovel, a first battery unit disposed on the upper revolving body, a second battery unit disposed on the lower travelling body, and a power supplier that supplies external power to the first battery unit and the second battery unit.

公开(公告)号：US11383602B2

公开(公告)日：2022-07-12

申请号：US17050349

申请日：2019-04-18

Applicant: Yanmar Power Technology Co., Ltd.

Inventor： Kensuke Kaneda ,  Jun Terashima

IPC: B60L1/00 ,  B60L53/00 ,  B60L50/60 ,  E02F9/22 ,  H02J7/34

Abstract: An excavator comprising: an electric motor having a commercial power supply and a battery as the drive power sources therefor; and a hydraulic actuator having a hydraulic pump driven by the electric motor, as the hydraulic source therefor. The excavator has: a first power supply mode in which the electric motor is driven while the battery is being charged by the commercial power supply; and a second power supply mode in which the electric motor is driven only by the battery. A power supply cable for supplying power from the commercial power supply is connected to a power supply port and, if the electric motor has stopped operating, the excavator moves from the second power supply mode to the first power supply mode.

公开(公告)号：US11225149B2

公开(公告)日：2022-01-18

申请号：US17050324

申请日：2019-04-15

Applicant: Yanmar Power Technology Co., Ltd.

Inventor： Kensuke Kaneda ,  Jun Terashima

IPC: B60L15/20 ,  H02P27/06 ,  H02J7/00 ,  B60L53/20 ,  B60L50/60

Abstract: An excavator comprising: a power supply that converts AC power supply voltage from a commercial power supply into DC power supply voltage; a battery that charges or discharges power from the power supply; an inverter that converts DC power supply voltage to AC power supply voltage; an electric motor that has power supplied thereto, and is controlled, by the inverter; a first electrical circuit that supplies power to the inverter from the power supply; a second electrical circuit that joins from the battery to the first electrical circuit; an inverter relay arranged between the inverter and a junction point between the first electrical circuit and the second electrical circuit; a battery relay arranged between the junction point and the battery; and a power supply relay arranged between the junction point and the power supply.

公开(公告)号：US11959251B2

公开(公告)日：2024-04-16

申请号：US17845252

申请日：2022-06-21

Applicant: YANMAR POWER TECHNOLOGY CO., LTD.

Inventor： Kensuke Kaneda ,  Jun Terashima

IPC: B60L53/00 ,  B60L1/00 ,  B60L50/53 ,  B60L50/60 ,  E02F9/20 ,  E02F9/22 ,  H02J7/34

CPC classification number: E02F9/2091 ,  B60L1/00 ,  B60L50/53 ,  B60L50/60 ,  B60L53/00 ,  E02F9/22 ,  H02J7/34 ,  H02J2310/48

Abstract: An excavator comprising: an electric motor having a commercial power supply and a battery as the drive power sources therefor; and a hydraulic actuator having a hydraulic pump driven by the electric motor, as the hydraulic source therefor. The excavator has: a first power supply mode in which the electric motor is driven while the battery is being charged by the commercial power supply; and a second power supply mode in which the electric motor is driven only by the battery. A power supply cable for supplying power from the commercial power supply is connected to a power supply port and, if the electric motor has stopped operating, the excavator moves from the second power supply mode to the first power supply mode.

公开(公告)号：US12291836B2

公开(公告)日：2025-05-06

申请号：US17416458

申请日：2019-11-20

Applicant: Yanmar Power Technology Co., Ltd.

Inventor： Jun Terashima ,  Kensuke Kaneda

IPC: E02F3/32 ,  B60K1/04 ,  B60L50/40 ,  B60L50/50 ,  B60L53/00 ,  B60L55/00 ,  E02F9/08 ,  E02F9/20

Abstract: A hydraulic shovel is provided with a lower travelling body and an upper revolving body revolvably disposed on the lower travelling body. The hydraulic shovel is also provided with a motor disposed on the upper revolving body for driving the hydraulic shovel, a first battery unit disposed on the upper revolving body, a second battery unit disposed on the lower travelling body, and a power supplier that supplies external power to the first battery unit and the second battery unit.