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公开(公告)号：US09731624B2
公开(公告)日：2017-08-15
申请号：US15265934
申请日：2016-09-15
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Yuichiro Morita , Shigeyuki Yoshihara , Kazuo Ishida , Noritaka Ito , Hirofumi Shimada
IPC: H02P23/00 , B60L15/08 , B60T7/02 , B60T7/12 , B60T8/88 , B60L3/00 , B60L3/04 , B60L11/00 , B60L11/08 , E02F9/20 , B60L15/20 , H02P27/08
CPC classification number: B60L15/08 , B60L3/0023 , B60L3/0084 , B60L3/04 , B60L11/005 , B60L11/08 , B60L15/2009 , B60L2200/40 , B60L2210/40 , B60L2240/30 , B60L2240/80 , B60T7/02 , B60T7/12 , B60T8/885 , E02F9/207 , H02P27/08 , Y02T10/70 , Y02T10/7022 , Y02T10/7077 , Y02T10/7241 , Y02T10/7258 , Y10S903/906
Abstract: An electric driving wheel type work vehicle has a traveling motor, an inverter for supplying the motor with three-phase power converted from DC power, a pre-driver circuit for supplying a gate signal to the inverter on the basis of an input PWM signal, a controller for outputting to the pre-driver circuit the PWM signal for controlling the driving of the motor, a parking brake, and a parking brake condition detector that detects the condition of the parking brake. When it is detected that the parking brake has been operated, the pre-driver circuit cuts off the output of the gate signal or the input of the PWM signal to the pre-driver circuit.
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Patent Agency Ranking
公开(公告)号：US09457688B2
公开(公告)日：2016-10-04
申请号：US14425328
申请日：2013-09-06
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Yuichiro Morita , Shigeyuki Yoshihara , Kazuo Ishida , Noritaka Ito , Hirofumi Shimada
IPC: G05B11/28 , B60L15/08 , B60T7/02 , B60T7/12 , B60T8/88 , B60L3/00 , B60L3/04 , B60L11/00 , B60L11/08 , E02F9/20 , B60L15/20 , H02P27/08
CPC classification number: B60L15/08 , B60L3/0023 , B60L3/0084 , B60L3/04 , B60L11/005 , B60L11/08 , B60L15/2009 , B60L2200/40 , B60L2210/40 , B60L2240/30 , B60L2240/80 , B60T7/02 , B60T7/12 , B60T8/885 , E02F9/207 , H02P27/08 , Y02T10/70 , Y02T10/7022 , Y02T10/7077 , Y02T10/7241 , Y02T10/7258 , Y10S903/906
Abstract: An electric driving wheel type work vehicle has a traveling motor, an inverter for supplying the motor with three-phase power converted from DC power, a pre-driver circuit for supplying a gate signal to the inverter on the basis of an input PWM signal, a controller for outputting to the pre-driver circuit the PWM signal for controlling the driving of the motor, a parking brake, and a parking brake condition detector that detects the condition of the parking brake. When it is detected that the parking brake has been operated, the pre-driver circuit cuts off the output of the gate signal or the input of the PWM signal to the pre-driver circuit.
Abstract translation: 电动驱动轮型作业车具有行驶马达，用于向马达提供从直流电源转换的三相电力的逆变器，用于根据输入的PWM信号向逆变器提供门信号的预驱动电路， 用于向前驱动电路输出用于控制电动机的驱动的PWM信号，驻车制动器和检测驻车制动器的状态的驻车制动状况检测器的控制器。 当检测到驻车制动器被操作时，预驱动器电路将门信号的输出或PWM信号的输入切断到预驱动器电路。
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公开(公告)号：US20150224895A1
公开(公告)日：2015-08-13
申请号：US14425328
申请日：2013-09-06
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Yuichiro Morita , Shigeyuki Yoshihara , Kazuo Ishida , Noritaka Ito , Hirofumi Shimada
CPC classification number: B60L15/08 , B60L3/0023 , B60L3/0084 , B60L3/04 , B60L11/005 , B60L11/08 , B60L15/2009 , B60L2200/40 , B60L2210/40 , B60L2240/30 , B60L2240/80 , B60T7/02 , B60T7/12 , B60T8/885 , E02F9/207 , H02P27/08 , Y02T10/70 , Y02T10/7022 , Y02T10/7077 , Y02T10/7241 , Y02T10/7258 , Y10S903/906
Abstract: An electric driving wheel type work vehicle has a traveling motor 21, an inverter 313 for supplying the motor with three-phase power converted from DC power, a pre-driver circuit 312 for supplying a gate signal 316 to the inverter 313 on the basis of an input PWM signal, a controller 311 for outputting to the pre-driver circuit the PWM signal 315 for controlling the driving of the motor 21, parking brake means 10, and parking brake condition detection means 12 that detects the condition of the parking brake means 10. When the parking brake condition detection means 12 detects the parking brake means 10 has been operated, the pre-driver circuit 312 cuts off the output of the gate signal 316, or the input of the PWM to the pre-driver circuit 312 is cut off.
Abstract translation: 电动驱动轮式作业车辆具有行驶马达21，用于向马达提供从直流电源转换的三相电力的逆变器313，用于基于以下方式向逆变器313提供门信号316的预驱动电路312 输入PWM信号;控制器311，用于向前驱动电路输出用于控制马达21的驱动的PWM信号315，驻车制动装置10以及检测驻车制动装置的状态的驻车制动条件检测装置12 当停车制动条件检测装置12检测到驻车制动装置10已经被操作时，预驱动器电路312切断门信号316的输出，或PWM到预驱动电路312的输入是 隔断。
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公开(公告)号：US09828749B2
公开(公告)日：2017-11-28
申请号：US14915736
申请日：2015-02-27
Applicant: Hitachi Construction Machinery Co., Ltd.
Inventor： Tomonori Takada , Shigeyuki Yoshihara , Toshihiko Ishida , Nobuyoshi Takahashi , Naoya Kawakami
CPC classification number: E02F9/268 , B60L3/003 , B60L3/0061 , B60L11/08 , B60L11/123 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , B60L2240/441 , B60L2240/527 , B60L2240/529 , E02F9/2075 , Y02T10/6217 , Y02T10/642 , Y02T10/7077
Abstract: To provide a hybrid wheel loader capable of reliably detecting a short-circuited state of a synchronous generator driven by a drive source. The present invention is provided with an MG 4 being a synchronous generator driven as an electric generator by an engine and operated as a motor by the electric power supplied from an electrical storage device 9, an MG inverter 5 having a motor current sensor 5d for detecting motor current flowing through the MG 4 and semiconductor switches 5a, 5b, and an HCU 10 for detecting a short-circuited state of the MG 4, wherein the HCU 10 determines that the MG 4 is in a short-circuited state when the semiconductor switches 5a, 5b of the MG inverter 5 are in an OFF state at gates and when the motor current detected by the motor current sensor 5d is equal to or greater than a specified threshold value.
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公开(公告)号：US09896822B2
公开(公告)日：2018-02-20
申请号：US15021375
申请日：2015-01-19
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Ryuji Kohno , Ken Takeuchi , Shigeyuki Yoshihara
IPC: E02F9/20 , H01M10/6554 , B60L11/18 , B60K1/04 , B60K6/28 , B60K6/485 , H01M10/625 , H01M10/647 , H01M10/6556 , H01M10/6567 , H01M10/613 , H01M10/658 , E02F9/08 , E02F3/32 , B60L1/00 , H01M2/10 , H01M10/615 , B60K1/00
CPC classification number: E02F9/2091 , B60K1/04 , B60K6/28 , B60K6/485 , B60K2001/005 , B60L1/003 , B60L11/1874 , B60L11/1879 , B60L2200/40 , B60Y2200/412 , E02F3/32 , E02F9/0858 , E02F9/0866 , E02F9/2075 , H01M2/1077 , H01M10/613 , H01M10/615 , H01M10/625 , H01M10/647 , H01M10/6554 , H01M10/6556 , H01M10/6567 , H01M10/658 , H01M2220/20 , Y02T10/6226 , Y02T10/7005 , Y02T10/705 , Y10S903/903
Abstract: A hybrid construction machine which can improve temperature control efficiency of an electrical storage device. It includes an engine 1, an assisting electricity generation motor 2 which performs assistance of power for the engine 1 and electricity generation and an electrical storage device 8 which performs transfer of electric power with this assisting electricity generation motor 2. The electrical storage device 8 includes a plurality of battery cells 200, a housing 220 which covers the plurality of battery cells 200 in a state of leaving them separated, a cooling plate 203 which is attached to this housing 220 and performs heat exchange with the plurality of battery cells 200, and a projection 214 which is interposed between the housing 220 and the cooling plate 203 and hinders heat transfer between the housing 220 and the cooling plate 203.
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公开(公告)号：US09611624B2
公开(公告)日：2017-04-04
申请号：US14710638
申请日：2015-05-13
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Ken Takeuchi , Shinichiro Yoshida , Itaru Naya , Shigeyuki Yoshihara
IPC: E02F9/08 , H01M2/10 , E02F9/20 , E02F9/16 , E02F9/12 , B60K7/00 , B60K11/04 , H01G9/00 , H01G2/10
CPC classification number: E02F9/0866 , B60K7/0015 , B60K11/04 , B60Y2200/412 , E02F9/123 , E02F9/166 , E02F9/20 , E02F9/2075 , E02F9/2091 , H01G2/10 , H01G9/0003 , H01M2/1083 , H01M2220/20 , Y10S903/907
Abstract: An electric power storage device (19) disposed on a revolving frame (6) located closer to an upstream side in a flow direction of cooling air (F) than a heat exchanger (18) is provided on an upper revolving structure (4). The electric power storage device (19) has a box-shaped casing (20) forming an outer wall and a battery module (29) provided in the casing (20) and accommodating an electrolyte. An electrolyte discharge pipe (30) for discharging an electrolyte mist and/or electrolyte injected out of the battery module (29) at abnormality of the battery module (29) to an outside of the upper revolving structure (4) is provided on the casing (20).
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