公开(公告)号：US20240271387A1

公开(公告)日：2024-08-15

申请号：US18647250

申请日：2024-04-26

申请人： NABTESCO CORPORATION

发明人： Kazuhito NAKAMURA

IPC分类号： E02F9/20 ,  B60L15/32 ,  E02F3/38

CPC分类号： E02F9/207 ,  B60L15/32 ,  E02F3/38 ,  B60L2200/40 ,  B60L2210/40

摘要： A driving apparatus of an electric construction machine including a lower traveling body, an upper rotating body that is attached to the lower traveling body, a boom attached to the upper rotating body, an arm that is attached to the boom, and a bucket that is attached to the arm, includes: a battery that generates DC power, DC/AC converters that convert the DC power generated by the battery into AC power, a contactless transmission unit that contactlessly transmit the AC power converted by the DC/AC converters in joint components of the electric construction machine, and an actuator that drives the joint component based on the AC power transmitted from the contactless transmission unit.

公开(公告)号：US11987130B2

公开(公告)日：2024-05-21

申请号：US16937571

申请日：2020-07-23

申请人： J.C. BAMFORD EXCAVATORS LIMITED

发明人： Matthew James Clowes ,  Neil Beloe ,  Alex Kay

IPC分类号： B60L1/00 ,  B60H1/00 ,  B60H1/03 ,  B60H1/22 ,  B60H1/32 ,  B60L50/60 ,  E02F9/20 ,  E02F9/22 ,  F15B21/0423 ,  F15B21/0427 ,  F15B21/04

CPC分类号： B60L1/003 ,  B60H1/00007 ,  B60H1/00278 ,  B60H1/00378 ,  B60H1/00392 ,  B60H1/0075 ,  B60H1/03 ,  B60H1/2218 ,  B60H1/2221 ,  B60H1/3227 ,  B60L50/60 ,  E02F9/207 ,  E02F9/2075 ,  E02F9/2095 ,  E02F9/226 ,  E02F9/2278 ,  F15B21/0423 ,  F15B21/0427 ,  B60Y2200/41 ,  F15B21/04 ,  Y02T10/70

摘要： A working machine comprising a hydraulic fluid circuit an operator structure and a thermal management system. The thermal management system connects an operator structure heater and a heat exchanger arranged to selectively remove heat energy from the hydraulic fluid circuit, so as to be capable transferring heat from the hydraulic fluid to the operator structure.

公开(公告)号：US11964569B2

公开(公告)日：2024-04-23

申请号：US17260614

申请日：2019-07-04

申请人： Hitachi Construction Machinery Co., Ltd.

发明人： Toshihiko Watanabe ,  Seiji Ishida ,  Ken Takeuchi

IPC分类号： B60L3/00 ,  B60L3/04 ,  B60L50/00 ,  B60L50/61 ,  B60L53/22 ,  E02F9/20 ,  H01M10/48

CPC分类号： B60L3/0046 ,  B60L3/04 ,  B60L50/61 ,  B60L53/22 ,  E02F9/207 ,  E02F9/2091 ,  H01M10/48 ,  B60L2200/40 ,  B60L2240/547 ,  B60L2250/16

摘要： In a case of a normal operation, a battery controller (22) assumes a normal operation mode and permits charging and discharging of a battery module (21). Upon receiving a discharge command from a vehicle body controller (17) for completely discharging the battery module (21), the battery controller (22) assumes a discharge mode to discharge the battery module (21) to reach a safe voltage level and store discharge information. Upon reading out the discharge information, the battery controller (22) assumes a discharge prohibition mode to prohibit charging and discharging of the battery module (21).

公开(公告)号：US20240125093A1

公开(公告)日：2024-04-18

申请号：US18277090

申请日：2022-02-02

申请人： Yanmar Holdings Co., Ltd.

发明人： Kensuke Kaneda ,  Kosuke Onitsuka

IPC分类号： E02F9/20

CPC分类号： E02F9/207

摘要： Provided is a hydraulic shovel as an electric work machine, the hydraulic shovel comprising: a charger that supplies electric power from an external power source to a battery to charge the battery; an electric motor that is driven with electric power supplied from the battery; a hydraulic system including a hydraulic pump driven by the electric motor and a hydraulic actuator to which pressure oil is supplied by the hydraulic pump; a control unit that manages a physical quantity indicating the operation status of the electric motor as first operation information, and manages a physical quantity indicating the operation status of the battery including charging and discharging as second operation information; and an output unit that outputs the first operation information and the second operation information.

公开(公告)号：US11891777B2

公开(公告)日：2024-02-06

申请号：US17153250

申请日：2021-01-20

申请人： Deere & Company

发明人： Eric Vilar ,  Joseph E. Lukaszewski

IPC分类号： E02F9/20 ,  E02F9/22 ,  B60L1/00 ,  H02P3/12

CPC分类号： E02F9/207 ,  E02F9/2075 ,  E02F9/2217 ,  H02P3/12 ,  B60L1/003

摘要： The available power surge capacity of a battery is detected. The available steady state regeneration energy capacity of the battery is also detected. The available battery generation power, available from an electric motor, is detected as well. The generation power available from the electric motor is applied to regenerate (or recharge) the battery based upon the available power surge capacity, and the available steady state capacity of the battery.

公开(公告)号：US20240003117A1

公开(公告)日：2024-01-04

申请号：US18257880

申请日：2021-12-08

申请人： ZF FRIEDRICHSHAFEN AG

发明人： Migen Bebeti ,  Rico Gloeckner

IPC分类号： E02F9/20 ,  B60L50/60

CPC分类号： E02F9/207 ,  B60L50/60 ,  B60L2200/40

摘要： A drivetrain for a working machine, including at least one electric motor and an electric energy storage device. The at least one electric motor is configured to provide mechanical power and the energy storage device is configured to supply the at least one electric motor with electrical power. The energy storage device includes at least two individual storage units electrically connected in series.

公开(公告)号：US20230417020A1

公开(公告)日：2023-12-28

申请号：US18215778

申请日：2023-06-28

申请人： J.C. Bamford Excavators Limited

发明人： Lee Harper ,  Tom Rushton

IPC分类号： E02F9/20 ,  B60L50/60 ,  E02F9/26 ,  B60L15/20

CPC分类号： E02F9/207 ,  B60L50/60 ,  E02F9/26 ,  B60L2260/20 ,  B60L2200/40 ,  B60L2240/54 ,  B60L15/20

摘要： A control system for an off-highway working machine includes a ground engaging propulsion structure for propelling the working machine, a body supported on the ground engaging propulsion structure, a drive arrangement, and a transmission operable to transmit drive to the ground engaging propulsion structure. The control system calculates a travel energy threshold required to enable the working machine to travel to the charging location, and provide an alert based on the travel energy threshold.

公开(公告)号：US20230417016A1

公开(公告)日：2023-12-28

申请号：US18252454

申请日：2021-09-27

申请人： JDC Corporation

发明人： Masakazu Sekiguchi ,  Hidetoshi Morimoto ,  Hiroshi Obata ,  Tsukasa Baba

IPC分类号： E02F9/08 ,  B64U70/93 ,  E02F9/20 ,  B60L50/75 ,  B60L8/00

CPC分类号： E02F9/0883 ,  B64U70/93 ,  E02F9/207 ,  B60L50/75 ,  B60L8/003 ,  B60L2200/40

摘要： A construction machine that can reduce emission of greenhouse gas is described. The construction machine includes a main body that is revolvable by revolving of a revolving part, a working device connected to one side of the main body, a hydrogen tank inside another side of the main body that stores hydrogen, and a fuel cell provided inside the main body to which the hydrogen from the hydrogen tank is supplied.

公开(公告)号：US20230291343A1

公开(公告)日：2023-09-14

申请号：US18119375

申请日：2023-03-09

申请人： HUSQVARNA AB

发明人： Masoud Varshosaz ,  Victor Hofmeijer

IPC分类号： H02P23/00 ,  B60L15/20 ,  E02F9/20

CPC分类号： H02P23/00 ,  B60L15/20 ,  E02F9/207 ,  B60L2240/421 ,  B60L2240/429 ,  B60L2210/20 ,  B60L2240/12 ,  B60L2240/423 ,  B60L9/00

摘要： A motor drive system (300) for controlling an operation of an electric machine (330) on construction equipment (100), the system comprising a frequency converter (320) and a control unit (340),



where the frequency converter (320) is arranged to receive electrical power from electrical mains (310) over a first electrical interface (160) at a first AC frequency and to convert the first AC frequency into a second AC frequency for output on a second electrical interface (326) to the electric machine (330),
where the control unit (340) is arranged to control (360) the frequency converter (320) to generate the second AC frequency in dependence of a configurable maximum current to be drawn over the first electrical interface (160).

公开(公告)号：US09889750B2

公开(公告)日：2018-02-13

申请号：US14422196

申请日：2013-06-19

申请人： Hitachi Construction Machinery Tierra Co., Ltd.

发明人： Masayuki Yunoue ,  Tatsuo Takishita ,  Hajime Kurikuma

IPC分类号： B60L11/18 ,  E02F9/20

CPC分类号： B60L11/1801 ,  B60L11/1803 ,  B60L11/1809 ,  E02F3/325 ,  E02F3/964 ,  E02F9/207 ,  E02F9/2091 ,  E02F9/2285 ,  E02F9/2296

摘要： Provided is an electric construction machine adapted to prevent an electric current, after flowing in via a junction at which power transmission systems join together, from flowing into at least one connector to which an external power supply is not connected.Power transmission systems 71A, 71B, 71C connected to connectors 59A, 59B, 59C are all caused to join with a common system 73 at a junction before being connected to a control unit 35. The power transmission systems 71A, 71B, and 71C include switches 74Aa, 74Ab, 74Ba, 74Bb, 74Ca, 74Cb. In relay circuits 75A, 75B, 75C, when a plug for an external power supply is connected to corresponding one of the connectors 59A, 59B, 59C, connection of the corresponding connector connection detecting terminals and plug connection detecting terminals energizes a coil of the corresponding control relay (either 76A, 76B, or 76C), then after switching contact points of the corresponding control relay to a closed state, energizes coils of the corresponding switches via the contact points, and switches contact points of the corresponding switches to a closed state.