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公开(公告)号：EP4113702A2
公开(公告)日：2023-01-04
申请号：EP22177969.7
申请日：2022-06-08
申请人： KUBOTA CORPORATION
发明人： OKAZAKI, Kazuto , TAMBA, Daiki
IPC分类号： H01M10/613 , H01M10/6563 , H01M10/6566 , H01M50/244
摘要： A power supply (1) includes a battery (2); an inverter (31) that controls an output voltage of the battery (2); an air-cooler (4) that cools the battery (2) and the inverter (31) with cooling air; and a case (5) that houses the battery (2), the inverter (31), and the air-cooler (4).
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公开(公告)号：EP3992010A1
公开(公告)日：2022-05-04
申请号：EP20831966.5
申请日：2020-06-24
申请人： KUBOTA CORPORATION
发明人： TAMBA, Daiki , YAMANAKA, Yukifumi , SHIMOIKE, Yuki
IPC分类号： B60L1/00 , B60L15/20 , E02F9/20 , B60W20/00 , B60W20/10 , B60K6/485 , B60W10/08 , B60W10/30 , B60L50/16 , B60L50/60 , B60L58/26
摘要： To easily set a torque or the like based on operations of a working machine (1).
The working machine (1) includes a machine body (2), an engine (60) provided on the machine body (2), a motor generator to be operated as a motor to assist driving of the engine (60) in an assisting operation and to be operated as a generator (63) by power of the engine (60) to generate electricity in a generating operation, a battery (66) to store the electricity generated by the motor generator, an acceleration sensor to measure acceleration of the machine body (2), and a controller to selectively set either one of the assisting operation and the generating operation based on the acceleration of the machine body (2) measured by the acceleration sensor.-
公开(公告)号：EP3992374A1
公开(公告)日：2022-05-04
申请号：EP20833704.8
申请日：2020-06-22
申请人： KUBOTA CORPORATION
发明人： TAMBA, Daiki , YAMANAKA, Yukifumi
摘要： An assisting action or an electricity generating action can be efficiently performed when a starting action for a working machine (1) is performed. A working machine (1) comprises: a machine body (2); an engine (60) provided on the machine body (2); a motor/generator (63) to perform an assisting action in which the motor/generator (63) functions as a motor to assist the engine (60) in driving and an electricity generating action in which the motor/generator (63) functions as a generator to generate electricity using power from the engine (60); a battery (66) to store electricity generated by the motor/generator (63); an operation member (58) for operation of the machine body (2); a starting action determining unit (70e) to determine, upon operation of the operation member (58), whether the operation corresponds to a starting action for the machine body (1); a first setting unit (70f) to set, if the starting action determining unit (70e) determines that the operation of the operation member (58) corresponds to the starting action, a torque of the motor/generator (63) for the assisting action or the electricity generating action to a first torque; and a second setting unit (70g) to set, if the starting action determining unit (70e) determines that the operation of the operation member (58) does not correspond to the starting action, the torque for the assisting action or the electricity generating action to a second torque differing from the first torque set by the first setting unit (70f).
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公开(公告)号：EP4458605A1
公开(公告)日：2024-11-06
申请号：EP22915528.8
申请日：2022-10-31
申请人： Kubota Corporation
摘要： An electric work vehicle includes: a battery (4) installed in a machine body; an inverter (14) that converts DC power that is based on output from the battery (4) to AC power; a motor (M) driven by the AC power converted by the inverter (14); a rotational speed information obtaining unit (41) that obtains rotational speed information indicative of a rotational speed of the motor (M); a travel device (42) driven by the motor (M); an operation member (43) that changes a required rotational speed required for the motor (M); a storage unit (45) storing an output map defining a relationship between a torque value that the motor (M) is allowed to output and the rotational speed of the motor (M); and a controller (44) that controls a current flowing through the motor (M) by running the inverter (14) based on the rotational speed information, the required rotational speed, and the output map, wherein the output map is set so as to have a shape similar to a shape of a torque curve of an engine in a high rotation range where the rotational speed of the motor (M) is at least a predetermined rotational speed.
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公开(公告)号：EP4456369A1
公开(公告)日：2024-10-30
申请号：EP22910830.3
申请日：2022-12-02
申请人： Kubota Corporation
摘要： An electric work vehicle including: a battery (4); a motor configured to be driven by electric power supplied from the battery (4); a travel device configured to be driven by the motor; and a connector (47) to which a charger (60) is connectable and is electrically connected to the battery (4). The connector (47) includes a connection terminal (50) to which the charger (60) is connectable and a housing (51) that covers the connection terminal (50), and the housing (51) includes a first drain hole (61) in a lower portion thereof.
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公开(公告)号：EP4393750A1
公开(公告)日：2024-07-03
申请号：EP23215395.7
申请日：2023-12-08
申请人： KUBOTA CORPORATION
发明人： TAMBA, Daiki , KAWABATA, Shinichi
IPC分类号： B60L1/00 , B60L58/12 , B60L58/19 , B60L58/20 , B60L58/21 , B60L1/02 , B60L1/14 , B60L3/00 , B60L50/51 , B60L53/14 , B60L15/20 , B60K1/04 , E02F9/20 , E02F9/22 , H02J7/00
CPC分类号： B60L58/21 , B60L1/003 , B60L58/12 , B60L2240/42120130101 , B60L58/20 , B60L2210/1020130101 , B60L2200/4020130101 , B60L2250/0020130101 , B60L2250/2220130101 , B60L2240/3420130101 , B60L58/19 , B60L3/0046 , B60L1/14 , B60L1/02 , B60L2250/1620130101 , B60L2260/2620130101 , B60L2210/4020130101 , B60L50/51 , B60L53/14 , B60L15/20 , E02F9/2091 , B60K1/04 , H02J7/00712
摘要： An electric working machine (1) includes battery packs (41), an actuated device (E) to be actuated by electricity supplied from the battery packs (41), and a controller (30) to control discharging of the battery packs (41) based on a remaining charge level of each of the battery packs (41). The controller (30) is configured or programmed to select one of the battery packs (41) as a discharging battery pack to supply electricity to the actuated device (E), and perform a limiting process to limit electricity supplied from the discharging battery pack (41) to the actuated device (E) when the remaining charge level of the discharging battery pack (41) is less than a limit threshold, and cause the limit threshold and/or content of the limiting process to differ between when one or more of the battery packs (41) that are other than the discharging battery pack (41) have a remaining charge level more than or equal to a second threshold and when any of the one or more of the battery packs (41) that are other than the discharging battery pack (41) do not have a remaining charge level more than or equal to the second threshold.
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公开(公告)号：EP4113702A3
公开(公告)日：2023-05-24
申请号：EP22177969.7
申请日：2022-06-08
申请人： KUBOTA CORPORATION
发明人： OKAZAKI, Kazuto , TAMBA, Daiki
IPC分类号： H01M10/613 , H01M10/6563 , H01M10/6566 , H01M50/244
摘要： A power supply (1) includes a battery (2); an inverter (31) that controls an output voltage of the battery (2); an air-cooler (4) that cools the battery (2) and the inverter (31) with cooling air; and a case (5) that houses the battery (2), the inverter (31), and the air-cooler (4).
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