WO2018201141A1 - Pompe alimentée par batterie - Google Patents

Pompe alimentée par batterie Download PDF

Info

Publication number
WO2018201141A1
WO2018201141A1 PCT/US2018/030227 US2018030227W WO2018201141A1 WO 2018201141 A1 WO2018201141 A1 WO 2018201141A1 US 2018030227 W US2018030227 W US 2018030227W WO 2018201141 A1 WO2018201141 A1 WO 2018201141A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
pump
pump system
pump assembly
battery
Prior art date
Application number
PCT/US2018/030227
Other languages
English (en)
Inventor
Nathan Adam HUGHES
Rustin Jay DRING
Original Assignee
Actuant Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Actuant Corporation filed Critical Actuant Corporation
Priority to US16/608,137 priority Critical patent/US20200173430A1/en
Publication of WO2018201141A1 publication Critical patent/WO2018201141A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/06—Mobile combinations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing

Definitions

  • the present invention generally relates to hydraulic pumps and, more particularly, to battery-powered pumps.
  • a self-contained pump system for supplying pressurized fluid to a remote actuator includes a handle portion adapted to be grasped by a user; a motor, such as a brushless DC (BLDC) motor; a battery having a nominal voltage of at least 60 V operable to supply power to the motor; and a 3-stage pump assembly driven by the motor and operable to discharge hydraulic fluid having a pressure and flow rate.
  • BLDC brushless DC
  • a pump in another independent aspect, includes a housing; a motor supported by the housing; a pump assembly supported by the housing and driven by the motor to discharge hydraulic fluid; and a carrying handle assembly having a handle portion balanced relative to a center of gravity of the pump.
  • the carrying handle assembly may include a protective bar extending along a side and over a top of the motor.
  • a self-containedpump system for supplying pressurized fluid to a remote actuator includes a motor, such as a brushless DC (BLDC) motor; a battery having a nominal voltage of at least 60 V operable to supply power to the motor; a 3- stage pump assembly driven by the motor and operable to discharge hydraulic fluid having a pressure and flow rate; a controller operable to control operation of the motor; and a remote control device in communication with the controller, the remote control device including a user- actuated switch operable to cause a signal to be communicated to the controller to operate the motor and, thereby, the pump assembly.
  • BLDC brushless DC
  • a method of pumping hydraulic fluid may be provided.
  • the method may generally include supplying power from a battery having a nominal voltage of at least 60 V to a motor, such as a brushless DC (BLDC) motor; with the motor, driving a 3-stage pump assembly; and, with the pump assembly, discharging hydraulic fluid having a pressure and flow rate.
  • the method may include actuating a remote switch to cause a signal to be communicated to a controller to operate the motor and, thereby, the pump assembly.
  • FIG. 1 is a perspective view of a pump system.
  • Fig. 2 is an end view of the pump system shown in Fig. 1.
  • Fig. 3 is a side view of the pump system shown in Fig. 1.
  • Fig. 4 is a perspective view of the pump system of Fig. 1 , including a user pendant.
  • Fig. 5 is a partially exploded view of the pump system of Fig. 4, illustrating a battery and a removable cover.
  • Fig. 6 is an exploded view of the pump system of Fig. 4.
  • Fig. 7 is a cross-sectional view of the pump system of Fig. 1.
  • Fig. 8 is a schematic diagram of a circuit of the pump of Fig. 1.
  • Fig. 9 is a graph of flow, current and sound (dB) performance versus pressure for the pump shown in Fig. 1 , with a fully-charged battery.
  • functionality described herein as being performed by one component may be performed by multiple components in a distributed manner. Likewise, functionality performed by multiple components may be consolidated and performed by a single component. Similarly, a component described as performing particular functionality may also perform additional functionality not described herein. For example, a device or structure that is "configured" in a certain way is configured in at least that way but may also be configured in ways that are not listed.
  • non-transitory computer-readable medium comprises all computer-readable media but does not consist of a transitory, propagating signal.
  • non-transitory computer-readable medium may include, for example, a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a ROM (Read Only Memory), a RAM (Random Access Memory), register memory, a processor cache, or any combination thereof.
  • ASICs application specific integrated circuits
  • Figs. 1-7 illustrate a battery-powered hydraulic pump 10.
  • the pump 10 is a self-contained system in that a power source and fluid source are provided onboard, instead of as external components.
  • the self-contained pump system is portable, in that the system includes features such as a handle to permit a user to easily move or transport the pump for use in remote work locations.
  • the pump 10 includes a high-voltage (e.g., having a nominal voltage of 60 V or greater) DC power unit and a 3-stage hydraulic pump assembly.
  • the pump 10 generally includes a housing 14 operable to support the pump 10 on a surface S, a power unit 18 including a motor 22 and a battery 26, and a pump assembly 30.
  • the motor 22 (Figs. 6 and 7) includes a direct drive brushless DC (BLDC) motor (e.g., 1 hp, 82 V max).
  • the power unit 18 may provide a peak torque of about 4.8 Newton meters (N m; about 42.75 inch pounds) at about 2600 revolutions per minute (rpm), 25 Amps (A) and about 1340 watts (W); its maximum torque may be limited to not exceed 20 A continuous or 25 A max.
  • the battery 26 includes a battery pack with a housing 28 supporting a number of battery cells 29 to provide the desired discharge output (e.g., nominal voltage, current capacity, power, etc.).
  • the battery 26 includes rechargeable battery cells having a Lithium-based chemistry and electrically connected to provide high voltage (e.g., a nominal voltage of about 72 V and a maximum voltage of about 82 V) and capacity (e.g., 5.0 Amp hours (Ah)).
  • the battery cells may have a different chemistry and be arranged to provide a different discharge output.
  • the battery 26 may be removable for charging or use with other battery-powered equipment.
  • the power unit 18 (Fig.
  • the power unit 18 includes a power unit housing 34 supporting the motor 22 and providing a battery support portion 78 to electrically and mechanically connect the battery 26.
  • the support portion 78 includes a receptacle 82 to removably receive the battery 26 and is closed by a cover 38.
  • the support portion 78 also includes a latch 86 that locks the battery 26 in place while the battery is received within the receptacle 82. A user may engage the latch 86 to unlock the battery 26 and remove the battery 26 from the battery support portion 78. A user may remove the cover 38 from the power unit housing 34 to expose the receptacle (Fig. 5).
  • Removing the cover 38 allows a user to access and remove the battery 26 from the power unit housing 34.
  • the battery 26 can be replaced with a new battery 26 or recharged and then reinserted into the receptacle.
  • the cover 38 may be pivotally coupled to the power unit housing 34 so that the cover 38 cannot be completely removed from the power unit housing 34.
  • the power unit 18 is connected to an adapter flange 42 to connect to the pump 30.
  • the flange 42 is relatively long to accommodate the motor drive shaft (not shown). In other constructions (not shown), the flange 42 may be shortened, with a shorter motor drive shaft, or eliminated altogether.
  • the flange 42 is connected to a reservoir 46, and the reservoir 46 is connected to and provides a source of hydraulic fluid for the pump assembly 30.
  • the pump assembly 30 includes three stages and is rated for 10,000 pounds per square inch (psi; 700 bar). With three stages, the pump assembly 30 can use a smaller, lower horsepower motor, while providing the same flow performance as existing AC-powered pumps with a larger, higher horsepower motor. The pump assembly 30 thus may contribute to preserving/increasing battery life compared to a situation in which the existing AC-powered pump was simply converted to be battery-powered.
  • a valve assembly 50 is supported on the housing 14 and connected in the hydraulic circuit (not shown) of the pump 10.
  • the valve assembly 50 is a 4- way, 3-position valve operable between a first "advance" position, a second "retract” position and a neutral position.
  • the advance position allows hydraulic fluid to leave the pump 10 and travel to a remote actuator or tool (e.g., a hydraulic jack, a power tool, etc. - not shown) via a conduit or tubing (not shown).
  • the retract position allows hydraulic fluid to travel from the tool and return to the reservoir 46.
  • the valve 50 is manually operated by a lever 52.
  • a carrying handle assembly 54 is connected to the housing 14.
  • the assembly 54 includes a handle portion 58 positioned and configured to provide an ergonomic carrying position for the pump 10 (e.g., the center of gravity balanced at the carrying point and with a user's hand parallel to the body).
  • the new carrying handle assembly 54 allows for single- handed carrying in a more ergonomic manner than conventional carrying methods of comparably-sized pumps.
  • the assembly 54 also includes a roll bar portion 62 constructed and arranged to protect components of the pump 10 (e.g., from impacts).
  • the roll bar portion 62 extends over and around the power unit 18, while allowing unimpeded access to the battery compartment, pump controls, etc.
  • the pump 10 includes a controller 66 operable to, among other things, configure and control operation of the pump 10 and/or of its components.
  • the controller 66 includes a processing unit (e.g., a microprocessor, a microcontroller, or another suitable programmable device), non-transitory computer-readable media, and an input/output interface.
  • the processing unit, the media, and the input/output interface are connected by one or more control and/or data buses.
  • the computer-readable media stores program instructions and data.
  • the processing unit is configured to retrieve instructions from the media and execute the instructions to perform the control processes and methods described herein.
  • the input/output interface transmits data from the controller 66 to external systems, networks, and/or devices and receives data from external systems, networks, and/or devices.
  • the input/output interface stores data received from external sources to the media and/or provides the data to the processing unit.
  • a control device (see Figs. 4 and 8; e.g., a user-held remote pendant 70) communicates with the controller 66 to provide user inputs to control operation of the pump 10.
  • the pendant 70 includes a switch 74, providing a simple interface for the user while facilitating maximum runtime of the battery 26.
  • the switch 74 When the switch 74 is depressed, the controller 66 turns on and runs the motor 22 and operates the pump assembly 30 until the switch 74 is released. Depressing the switch 74 drives the pump assembly 30 to pump fluid in a direction set by the valve assembly 50 (i.e., advance or retract). The switch 74 does not control the position of the valve assembly 50.
  • the motor 22, the battery 26 and the pendant 70 communicate with the controller 66.
  • the controller 66 receives information from and transmits information to the components of the pump 10 and controls operation of the pump 10. As mentioned above, depressing the switch 74 causes a signal to be communicated from the pendant 70 to the controller 66 to operate the motor 22 and, thereby, the pump assembly 30.
  • the controller 66 also receives information regarding the status/characteristics of the components (e.g., the voltage, temperature of the battery 26, the load on the motor 22, etc.) and, based on this information, controls operation of the pump 10.
  • the controller 66 may be programmed to achieve different speeds and target peak efficiency with algorithms for constant horsepower flow curves. Additional functions, such as, for example, pressure control with a sensor or based on instantaneous motor current and speed, may be added that utilize the "smart control" of the controller 66.
  • the illustrated pump 10 may be used in demanding applications requiring high flow rates.
  • One such application is post-tensioning of a tendon (not shown) positioned in a concrete structure (not shown).
  • the pump 10 may be connected and supply pressurized hydraulic fluid to a cylinder assembly (not shown; e.g., single-acting or double- acting) operable to apply tension to the tendon.
  • Fig. 9 illustrates the performance of the pump 10 according to some embodiments.
  • performance variables include flow rate (in cubic inches per minute (CIM)), current (in amperes (A)), and sound (in decibels (dB)).
  • CIM cubic inches per minute
  • A amperes
  • dB decibels
  • Each of the performance variables are measured at different pressures which may correspond to different stages of the pump (i.e., a first stage from 0-1100 psi, a second stage from 1 100-4000 psi, and a third stage from 4000- 10000 psi).
  • the flow rate has a generally shallow decreasing slope in the first, second, and third stages and a much steeper decreasing slope while transitioning between stages.
  • the pump 10 has a max flow rate of approximately 360 CIM in the first stage, 110 CIM in the second stage, and 35 CIM in the third stage.
  • the current increases during the first, second, and third stages, and decreases during the transition between the stages.
  • the sound level of the pump remains generally consistent through the three stages, slightly increasing from the first stage to the third stage.
  • the pump 10 outputs approximately 83 dB of sound around the first and second stages, and outputs approximately 87 dB of sound around the second and third stages.
  • the pump 10 delivers the performance of a larger 1.75 to 2hp corded AC-powered pump without the limitations of AC corded power.
  • the battery power allows for improved portability in remote applications without readily available AC line voltage and without requiring a generator.
  • the battery 26, with a 72 V nominal voltage (82 V max) and a 5.0 Ah capacity leads to a system with about 360 W-h of available energy (72 V * 5.0 Ah).
  • a conventional battery-powered pump powered by a 28 V to 40 V battery may provide only about 129 to 200 W-h of available energy. Users in high demand applications may need increased energy and higher performance which can be provided by the pump 10.
  • the 3-stage pump assembly 30 delivers the same speed as traditional 2-stage AC- powered pumps. This allows for a smaller motor design, which yields more cycles per charge in the battery-powered pump 10.
  • the direct drive BLDC motor 22 has higher efficiency than corded motors, which also leads to improved battery life and reduced heat generation.

Abstract

Un système de pompe autonome permettant de fournir un fluide sous pression vers un actionneur à distance comprend une partie poignée conçue pour être saisie par un utilisateur. Le système de pompe comprend également un moteur c.c. sans balai et une batterie ayant une tension nominale supérieure ou égale à 60 V. La batterie sert à fournir de l'énergie au moteur. Un ensemble pompe à 3 étages est entraîné par le moteur et a pour fonction de refouler un fluide hydraulique présentant une certaine pression et un certain débit.
PCT/US2018/030227 2017-04-28 2018-04-30 Pompe alimentée par batterie WO2018201141A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/608,137 US20200173430A1 (en) 2017-04-28 2018-04-30 Battery-powered pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762491566P 2017-04-28 2017-04-28
US62/491,566 2017-04-28

Publications (1)

Publication Number Publication Date
WO2018201141A1 true WO2018201141A1 (fr) 2018-11-01

Family

ID=62563233

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2018/030227 WO2018201141A1 (fr) 2017-04-28 2018-04-30 Pompe alimentée par batterie

Country Status (2)

Country Link
US (1) US20200173430A1 (fr)
WO (1) WO2018201141A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE543709C2 (en) * 2019-04-17 2021-06-22 Pandrol Ab Mobile energy supply unit for hand-held hydraulic tools and method for operating a hand-held hydraulic tool
SE2050261A1 (sv) * 2020-03-09 2021-09-10 Sahlins Sweden Ab Portabelt hydraulaggregat

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230366416A1 (en) 2022-05-02 2023-11-16 Enerpac Tool Group Corp. Hydraulic jack assembly and pin puller assembly
US20230390913A1 (en) 2022-06-06 2023-12-07 Enerpac Tool Group Corp. Hydraulic tools

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5477680A (en) * 1994-09-13 1995-12-26 Burndy Corporation Motor driven hydraulic tool with variable displacement hydraulic pump
WO2004009160A1 (fr) * 2002-07-24 2004-01-29 M 2 Medical A/S Systeme de pompe de perfusion, unite de pompe de perfusion et pompe de perfusion
WO2007140596A1 (fr) * 2006-06-08 2007-12-13 Larry Alvin Schuetzle Compresseur ou pompe alternatifs et système d'entraînement d'outil portatif comprenant un compresseur alternatif
WO2008039223A1 (fr) * 2006-09-26 2008-04-03 Boehringer Technologies L.P. Système de pompe pour une thérapie de lésion par pression négative
WO2016133874A1 (fr) * 2015-02-17 2016-08-25 Actuant Corporation Système de pompe à fluide portable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5477680A (en) * 1994-09-13 1995-12-26 Burndy Corporation Motor driven hydraulic tool with variable displacement hydraulic pump
WO2004009160A1 (fr) * 2002-07-24 2004-01-29 M 2 Medical A/S Systeme de pompe de perfusion, unite de pompe de perfusion et pompe de perfusion
WO2007140596A1 (fr) * 2006-06-08 2007-12-13 Larry Alvin Schuetzle Compresseur ou pompe alternatifs et système d'entraînement d'outil portatif comprenant un compresseur alternatif
WO2008039223A1 (fr) * 2006-09-26 2008-04-03 Boehringer Technologies L.P. Système de pompe pour une thérapie de lésion par pression négative
WO2016133874A1 (fr) * 2015-02-17 2016-08-25 Actuant Corporation Système de pompe à fluide portable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE543709C2 (en) * 2019-04-17 2021-06-22 Pandrol Ab Mobile energy supply unit for hand-held hydraulic tools and method for operating a hand-held hydraulic tool
SE2050261A1 (sv) * 2020-03-09 2021-09-10 Sahlins Sweden Ab Portabelt hydraulaggregat
SE544129C2 (sv) * 2020-03-09 2022-01-04 Sahlins Sweden Ab Portabelt hydraulaggregat

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