公开(公告)号：US11964569B2

公开(公告)日：2024-04-23

申请号：US17260614

申请日：2019-07-04

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： Toshihiko Watanabe ,  Seiji Ishida ,  Ken Takeuchi

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

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

Abstract: 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：US20190211528A1

公开(公告)日：2019-07-11

申请号：US16330149

申请日：2017-11-06

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： Masafumi HITA ,  Shinya IMURA

IPC: E02F9/20 ,  B60K6/485

CPC classification number: E02F9/2075 ,  B60K6/485 ,  B60L3/00 ,  B60L50/16 ,  B60L50/50 ,  B60L50/60 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  B60W20/13 ,  E02F9/20 ,  E02F9/2091 ,  E02F9/2235 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  H02J7/04 ,  Y02T10/7005 ,  Y02T10/7077

Abstract: An HCU (37) includes a battery low temperature reducing output calculating section (71A) that determines, when it is determined that an electricity storage device (31) is in a low temperature state by a battery temperature Tb, a battery low temperature reducing output PbL that is made to a larger value as the battery temperature Tb is lower, a hydraulic oil low temperature reducing output calculating section (71B) that determines, when it is determined that hydraulic oil is in a low temperature state by a hydraulic oil temperature To, a hydraulic oil low temperature reducing output PoL that is made to a larger value as the hydraulic oil temperature To is lower, and an output command calculating section (80) that controls a vehicle body operation based upon a sum of the battery low temperature reducing output PbL and the hydraulic oil low temperature reducing output PoL.

公开(公告)号：US20180282968A1

公开(公告)日：2018-10-04

申请号：US15754122

申请日：2017-01-11

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： Masafumi HITA ,  Shinya IMURA ,  Hidekazu MORIKI

IPC: E02F3/43 ,  B60W20/00 ,  E02F9/20 ,  E02F3/42

CPC classification number: E02F3/435 ,  B60L1/00 ,  B60L3/00 ,  B60L50/16 ,  B60W20/00 ,  B60W2300/17 ,  B60W2710/30 ,  E02F3/32 ,  E02F3/425 ,  E02F9/2004 ,  E02F9/2075 ,  E02F9/2091 ,  E02F9/2203 ,  E02F9/2271 ,  Y02T10/7077

Abstract: The lifetime of an electrical storage device is prolonged by reducing a speed of at least relevant one of hydraulic actuators for a specific operation to be performed by a work machine. This hybrid work machine includes a limit control section. When at least one specific operation defined as predetermined one or more among a plurality of work operations performed by the hybrid work machine is performed under condition of a degree of tendency to deterioration of the electrical storage device becoming higher, the limit control section reduces a speed of at least relevant one of the hydraulic actuators at a rate preset for the specific operation depending on the degree of tendency to deterioration of the electrical storage device.

公开(公告)号：US20180172363A1

公开(公告)日：2018-06-21

申请号：US15380088

申请日：2016-12-15

Applicant: Caterpillar Inc.

Inventor： Matt Brauer ,  Jacob Carl Wyss

IPC: F28F5/00 ,  E02F3/76 ,  E02F3/815 ,  E02F9/28 ,  F02B61/00 ,  F02B37/00 ,  F01N13/10

CPC classification number: F28F5/00 ,  B60K17/28 ,  B60K25/06 ,  E02F3/7604 ,  E02F3/841 ,  E02F5/32 ,  E02F9/0866 ,  E02F9/205 ,  E02F9/2075 ,  E02F9/2091 ,  F02B37/00 ,  F02B61/00 ,  F28D2021/0094 ,  F28F2280/10 ,  F28F2280/105 ,  Y02T10/144

Abstract: A work machine is provided. The work machine may include a power module configured to provide power including a battery and an engine coupled to a folding heat exchange device. The work machine may also include a drive module configured over a track roller frame with one or more motors. The work machine may also include a hydraulic module including one or more devices in a front region and one or more devices in a rear region to cut or rip encountered material.

公开(公告)号：US09951497B2

公开(公告)日：2018-04-24

申请号：US15137916

申请日：2016-04-25

Applicant: Caterpillar Inc.

Inventor： Xinyu Ge ,  Baojun Si ,  Yingying Kuai

IPC: B60K5/00 ,  E02F9/20 ,  E02F3/64 ,  E02F3/65

CPC classification number: E02F9/2062 ,  E02F3/6409 ,  E02F3/652 ,  E02F9/2091 ,  E02F9/2095

Abstract: A hybrid power train system for a tractor scraper is provided. The hybrid power train system may include a primary power source coupled to a first set of traction devices, a generator coupled to the primary power source, a first electric motor coupled to a second set of traction devices, an inverter circuit coupled to the generator and the first electric motor, an energy storage device coupled to the inverter circuit, and a controller operatively coupled to the inverter circuit. The controller may be configured to engage a first operation mode enabling electrical energy, supplied by the generator and the first electric motor, to be stored in the energy storage device, and engage a second operation mode enabling electrical energy, stored in the energy storage device, to be supplied to the first electric motor to drive the second set of traction devices.

公开(公告)号：US09889750B2

公开(公告)日：2018-02-13

申请号：US14422196

申请日：2013-06-19

Applicant: Hitachi Construction Machinery Tierra Co., Ltd.

Inventor： Masayuki Yunoue ,  Tatsuo Takishita ,  Hajime Kurikuma

IPC: B60L11/18 ,  E02F9/20

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

Abstract: 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.

公开(公告)号：US09845587B2

公开(公告)日：2017-12-19

申请号：US15027942

申请日：2014-10-06

Applicant: Hudson Bay Holding B.V.

Inventor： Leendert Wilhelmus Cornelis Huissoon

IPC: B60K6/46 ,  E02F9/20 ,  E02F3/30 ,  E02F3/32 ,  E02F3/96 ,  E02F9/00 ,  E02F9/08 ,  E02F9/12 ,  B60K25/02 ,  B60K25/06 ,  E02F9/18 ,  E02F9/22

CPC classification number: E02F9/2058 ,  B60K6/46 ,  B60K25/02 ,  B60K25/06 ,  B60K2025/026 ,  B60W2300/17 ,  E02F3/308 ,  E02F3/32 ,  E02F3/961 ,  E02F9/006 ,  E02F9/0858 ,  E02F9/123 ,  E02F9/18 ,  E02F9/2075 ,  E02F9/2079 ,  E02F9/2091 ,  E02F9/2095 ,  E02F9/22 ,  Y02T10/6217 ,  Y10S903/951

Abstract: A mobile apparatus includes a main frame, an operating arm connected to the main frame, drive means configured to drive displacing means of the mobile apparatus, such as one or more wheels or tracks, drive means configured to drive the operating arm and a control system, connected to operating instruments for a driver, for controlling the drive means. The drive means for the displacing means includes an electric motor such that the drive of the displacing means is substantially electrical.

公开(公告)号：US09803339B2

公开(公告)日：2017-10-31

申请号：US14350611

申请日：2012-10-15

Applicant: Kobe Steel, Ltd. ,  KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Takao Nanjo ,  Saburo Senoo ,  Naoki Goto

IPC: F15B21/14 ,  E02F9/22 ,  E02F9/20 ,  F15B13/06

CPC classification number: E02F9/2217 ,  E02F9/2091 ,  E02F9/226 ,  E02F9/2285 ,  E02F9/2289 ,  E02F9/2292 ,  E02F9/2296 ,  F15B13/06 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/253 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/88

Abstract: A hydraulic control device includes: a recovery oil passage; a regenerative motor that rotates an output shaft of an engine in response to a supply of the hydraulic fluid and is driven to rotate by rotation of the output shaft of the engine; a regenerative oil passage for guiding return oil from a boom cylinder to the regenerative motor without passing the return oil through the recovery oil passage; a coupling oil passage that couples the recovery oil passage and the regenerative oil passage to each other; and a regeneration-side check valve that is provided on the coupling oil passage, and allows the hydraulic fluid to flow from the recovery oil passage toward the regenerative motor, and moreover restricts the hydraulic fluid from flowing from the regenerative motor toward the recovery oil passage.

公开(公告)号：US09797115B2

公开(公告)日：2017-10-24

申请号：US14909183

申请日：2015-01-20

Applicant: KOMATSU LTD.

Inventor： Yasuki Kishimoto ,  Hiroshi Monden ,  Yasunori Ohkura

IPC: E02F9/20 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/13 ,  B60K6/445 ,  B60K6/365 ,  B60W20/11 ,  E02F9/22 ,  F16H3/72 ,  F16H37/10

CPC classification number: E02F9/2075 ,  B60K6/365 ,  B60K6/445 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/11 ,  B60W20/13 ,  B60W2300/17 ,  B60W2510/244 ,  B60W2710/021 ,  B60W2710/0644 ,  B60W2710/081 ,  B60W2710/244 ,  E02F9/2079 ,  E02F9/2091 ,  E02F9/2292 ,  E02F9/2296 ,  F16H3/728 ,  F16H2037/101 ,  F16H2200/2007 ,  F16H2200/2041 ,  Y02T10/6239 ,  Y02T10/6286 ,  Y10S903/93

Abstract: A power transmission device includes an input shaft, an output shaft, a gear mechanism, an energy-generating motor, a first clutch, and a locking device. The energy storage unit is configured to store the energy generated by the energy-generating motor. The gear mechanism includes a planetary gear mechanism, which includes a first rotation element, a second rotation element, and a third rotation element, which are mutually different. The first clutch is provided in the power transmission route between the engine and the first rotation element. The locking device locks or releases the second rotation element. The energy-generating motor is connected to the third rotation element. A controller locks the second rotation element, converges the rotation speeds of two rotation shafts in the first clutch to cause the first clutch to engage, and rotates the energy-generating motor using drive power from the engine to thereby accumulate energy in the energy storage unit.

公开(公告)号：US20170291501A1

公开(公告)日：2017-10-12

申请号：US15509539

申请日：2015-10-13

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： Chiaki TAKAHASHI ,  Shinya IMURA ,  Ken TAKEUCHI ,  Seiji ISHIDA ,  Itaru NAYA ,  Masafumi HITA

IPC: B60L11/18 ,  B60W10/26 ,  E02F9/20 ,  E02F9/22 ,  E02F3/30 ,  B60W10/30 ,  B60W20/00

CPC classification number: B60L11/1859 ,  B60K6/20 ,  B60K6/28 ,  B60K6/485 ,  B60L9/18 ,  B60L50/16 ,  B60L58/12 ,  B60L58/14 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W10/30 ,  B60W20/00 ,  B60W20/10 ,  B60W20/13 ,  B60W2300/17 ,  B60W2510/244 ,  B60W2510/246 ,  B60W2710/086 ,  B60W2710/248 ,  B60W2710/305 ,  B60Y2200/41 ,  B60Y2200/92 ,  E02F3/30 ,  E02F9/2075 ,  E02F9/2091 ,  E02F9/2203 ,  F15B11/16 ,  F15B2211/26 ,  H02J7/00 ,  Y02T10/6286 ,  Y10S903/93

Abstract: Provided is hybrid construction machine that can charge/discharge an electrical storage device appropriately and can suppress stop of an engine accompanying sharp increase of a load. The present invention includes a hybrid controller 22 that controls power of a hydraulic pump 17 and electric power of an inverter 15 in response to storage battery characteristics of the electrical storage device 16, and an output command unit 22F of the hybrid controller 22 is configured to control at least either one of the power of the hydraulic pump 17 and the electric power of the inverter 15 on the basis of at least either one of electric current or voltage of the storage battery characteristics and at least either one of temperature or a state of charge of the storage battery characteristics.