WO2019001200A1 - 电动油泵总成、转向系统和润滑系统 - Google Patents

电动油泵总成、转向系统和润滑系统 Download PDF

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Publication number
WO2019001200A1
WO2019001200A1 PCT/CN2018/088749 CN2018088749W WO2019001200A1 WO 2019001200 A1 WO2019001200 A1 WO 2019001200A1 CN 2018088749 W CN2018088749 W CN 2018088749W WO 2019001200 A1 WO2019001200 A1 WO 2019001200A1
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WO
WIPO (PCT)
Prior art keywords
oil pump
oil
pump assembly
assembly
end cover
Prior art date
Application number
PCT/CN2018/088749
Other languages
English (en)
French (fr)
Inventor
杨胜麟
刘彦
王涛
Original Assignee
比亚迪股份有限公司
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 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2019001200A1 publication Critical patent/WO2019001200A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/19Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/06Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/06Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/062Details, component parts
    • B62D5/064Pump driven independently from vehicle engine, e.g. electric driven pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001Noise damping
    • F04B53/002Noise damping by encapsulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08Cooling; Heating; Preventing freezing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22Arrangements for enabling ready assembly or disassembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/008Enclosed motor pump units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008Prime movers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0096Heating; Cooling
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • F01M2001/0207Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0215Electrical pumps

Definitions

  • the present disclosure relates to the field of vehicle manufacturing technology, and in particular to an electric oil pump assembly, a steering system having the electric oil pump assembly, and a lubrication system having the electric oil pump assembly.
  • the electric oil pump is widely used in the steering system and the lubrication system of the vehicle.
  • the oil pump and the motor of the electric oil pump are separated, and the connection relationship is only the power coupling connection between the oil pump shaft and the motor shaft, so that the electric oil pump is relatively large.
  • the occupied installation space is large.
  • the working noise of the motor and the working noise of the oil pump are relatively large.
  • various damping elements are often used to isolate the noise.
  • the structure of the damping element is complicated, occupying a large installation space, and the production cost is high, and the assembly process is complicated. There is room for improvement.
  • the present disclosure is intended to address at least one of the technical problems existing in the prior art. To this end, the present disclosure proposes an electric oil pump assembly, a heat dissipation performance and a work stability number of the electric oil pump assembly.
  • the electric oil pump assembly has a total oil inlet and a total oil outlet, and includes: a motor assembly having liquid cooling in communication with the total oil inlet a chamber, the liquid cooling chamber includes a circulating oil passage, the circulating oil passage is located between a stator of the motor assembly and a motor casing of the motor assembly; and an oil pump assembly, the oil pump assembly is mounted on the motor assembly The end portion is coupled to the motor shaft of the motor assembly, and the oil suction port of the oil pump assembly is in communication with the circulating oil passage, and the oil discharge port of the oil pump assembly is in communication with the total oil outlet.
  • the oil suction of the oil pump assembly and the heat dissipation of the motor assembly are realized by setting the circulating oil passage, which contributes to improving the heat dissipation performance and working stability of the electric oil pump assembly, and the integration is high and light.
  • the level of quantification is high.
  • the motor assembly further includes: a rear end cover that closes a rear end of the motor casing to form a rear cavity of the liquid cooling chamber,
  • the plurality of circulating oil passages are spaced apart in the circumferential direction, and a plurality of the circulating oil passages are communicated through the rear chamber.
  • the oil of at least one of the plurality of the circulating oil passages flows from the rear to the front and is connected to the oil suction port.
  • a part of the plurality of the circulating oil passages of the circulating oil passages flow from the rear to the front, and another portion of the oil in the circulating oil passages flows from the front to the rear, And the two kinds of the circulating oil passages having different oil flow directions are staggered in the circumferential direction.
  • one of the plurality of circulating oil passages is connected to the total oil inlet port to allow oil to flow into the liquid cooling through the one of the plurality of circulating oil passages Cavity.
  • the oil pump assembly is mounted on a front end cover of the motor assembly, and an oil retaining ring is disposed between the stator and the front end cover.
  • the circulating oil passage extends in the axial direction.
  • the oil pump assembly is mounted on a front end cover of the motor assembly, and the front end cover is provided with an oil passage that communicates the circulation oil passage with the oil suction port.
  • the front end cover has a support flange that protrudes axially toward a rotor of the motor assembly, the support flange for supporting a bearing of the motor assembly,
  • the support flange, the motor shaft, and the bearing of the motor assembly collectively define an oil suction chamber connected to the oil suction port, the oil passage passages through the support flange to communicate the oil suction chamber and the circulation Oil channel.
  • the oil pump assembly is mounted on a front end cover of the motor assembly, and the total oil inlet is provided on the front end cover and communicates with the circulating oil passage.
  • the total oil inlet is provided above the front end cover.
  • An electric oil pump assembly has: an oil pump chamber mounted on a front end cover of the motor assembly, and the oil pump assembly is installed in the oil pump chamber, the oil pump chamber Filled with oil.
  • the oil pump chamber is in communication with the total oil inlet, and the oil suction port is connected to the oil pump chamber.
  • the front end cover is provided with an oil discharge passage, one end of the oil discharge passage is connected to an oil discharge port of the oil pump assembly, and the other end forms the total oil discharge port.
  • An electric oil pump assembly according to an embodiment of the present disclosure, the oil pump chamber being connected to an oil discharge port of the oil pump assembly and in communication with the total oil discharge port.
  • the front end cover is provided with an oil discharge passage, one end of the oil discharge passage is connected to the oil pump chamber, and the other end forms the total oil outlet.
  • the oil pump assembly is floatingly supported on the front end cover.
  • An electric oil pump assembly further includes: an elastic member and a positioning member that passes through the oil pump assembly and the front end cover and is in clearance fit with the oil pump assembly, the elastic member Contacting the oil pump assembly to apply an axial preload force to the oil pump assembly toward the motor assembly.
  • the positioning member is a bolt, and an outer circumference of the oil pump assembly is provided with a lug, and the lug is provided with a positioning hole, and the bolt penetrates the positioning hole and is The front end cover is screwed, the elastic member is a spring and is sleeved outside the bolt, and the spring elastically stops between the lug and the head of the bolt.
  • An electric oil pump assembly further includes: a magnetic member mounted on the front end cover, and a front cover of the oil pump assembly is made of a ferromagnetic material.
  • the front cover is provided with a recess, at least a portion of the magnetic member protrudes from the front end cover and protrudes into the recess, and the recess Groove clearance fit.
  • An electric oil pump assembly wherein the oil pump assembly and the front end cover are pre-positioned by a positioning unit, and at least one of the positioning unit and the oil pump assembly and the front end cover are along a diameter
  • the rear cover of the oil pump assembly and the top wall of the oil pump chamber are respectively provided with magnetic members having opposite magnetic pole directions.
  • An electric oil pump assembly further includes: a buckle connected between the oil pump assembly and the front end cover and in clearance fit with the front end cover.
  • one end of the buckle is fixedly connected to the front end cover, and the other end is provided with a hook that is engaged with a front cover of the oil pump assembly, and the hook is The front cover is restrained in the axial direction.
  • the front cover plate is provided with a snap groove
  • the buckle extends through the snap groove and is matched with the snap groove
  • the orientation of the hook The end surface of the front end cover is in clearance with the front cover.
  • the hook has a guide surface that is inclined from the inside toward the outside in a direction away from the front end cover in a radial direction of the front cover.
  • the front end cover has an annular boss extending axially away from the motor assembly, the annular boss forming a sidewall of the oil pump chamber, The top wall of the oil pump chamber is connected to the annular boss by a threaded fastener.
  • An electric oil pump assembly further includes: a soundproof cover that is disposed outside an outer wall surface of the oil pump chamber.
  • An electric oil pump assembly further comprising: a low pressure cover disposed outside a wall surface of the oil pump chamber and defining a low pressure chamber communicating with the total oil inlet port, the low pressure A cover is coupled to the front end cover.
  • the low pressure cover has a tapered peripheral wall, and an inner diameter of the low pressure cover gradually decreases from a direction near the total oil inlet to a direction away from the total oil inlet.
  • a seal ring is interposed between the oil pump assembly and the front end cover.
  • the motor assembly and the oil pump assembly are laterally disposed.
  • the present disclosure also provides a steering system having an electric oil pump assembly as described in any of the above.
  • the present disclosure also provides a lubrication system having an electric oil pump assembly as described in any of the above.
  • the lubrication system has the same advantages as the above-mentioned electric oil pump assembly with respect to the prior art, and details are not described herein again.
  • 1 - 38 are schematic structural views of an electric oil pump assembly according to some embodiments of the present disclosure.
  • Figure 39 is Figures 1, 3, 4, 5, 8, 9, 10, 12, 13, 14, 17, 18, 19, 21, 22, 24, 26, 27, 29, 31, 32, 34, 36, 37 is a schematic cross-sectional view of the motor assembly in the embodiment shown in FIG. 37;
  • Figure 40 is a schematic cross-sectional view of the motor assembly of the embodiment shown in Figures 2, 6, 7, 11, 15, 16, 20, 23, 25, 28, 30, 33, 35, 38;
  • Figure 41 is an assembled view of the oil pump assembly of the embodiment shown in Figures 10, 11, 12, 24, 25, 34, 35;
  • FIG. 43 is a schematic structural view of a steering system according to an embodiment of the present disclosure.
  • FIG 44 is a schematic structural view of a lubrication system in accordance with an embodiment of the present disclosure.
  • connection is to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined.
  • Connections, or integral connections may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal to the two elements.
  • the specific meanings of the above terms in the present disclosure can be understood in the specific circumstances by those skilled in the art.
  • the electric oil pump assembly has a total oil inlet and a total oil outlet, and includes: a motor assembly having a liquid cooling chamber in communication with the total oil inlet, the liquid cooling chamber including a circulating oil passage, circulating The oil passage is located between the stator of the motor assembly and the motor casing of the motor assembly; the oil pump assembly is mounted at the end of the motor assembly and is coupled to the motor shaft of the motor assembly, and the oil suction port and the circulating oil passage of the oil pump assembly Connected, the oil discharge port of the oil pump assembly is connected to the total oil outlet.
  • the oil suction of the oil pump assembly and the heat dissipation of the motor assembly are realized by setting the circulating oil passage, which contributes to improving the heat dissipation performance and working stability of the electric oil pump assembly, and the integration is high and light.
  • the level of quantification is high.
  • the motor assembly further includes: a rear end cover that closes a rear end of the motor casing to form a rear cavity of the liquid cooling chamber, the circulation oil passage is plural and circumferentially spaced apart, and more A circulating oil passage is connected through the rear chamber.
  • the oil of at least one of the plurality of circulating oil passages flows from the rear to the front and is connected to the oil suction port.
  • a portion of the plurality of circulating oil passages of the circulating oil passages flow from the rear to the front, and the other portion of the circulating oil passages flows from the front to the rear, and the two oil passages having different oil flow directions are different. Staggered along the circumference.
  • one of the plurality of circulating oil passages is coupled to the total oil inlet to allow the oil to flow into the liquid cooling chamber through one of the plurality of circulating oil passages.
  • the oil pump assembly is mounted on the front end cover of the motor assembly with a slinger between the stator and the front end cover.
  • the circulating oil passage extends in the axial direction.
  • the oil pump assembly is mounted on a front end cover of the motor assembly, the front end cover being provided with an oil passage that communicates between the circulating oil passage and the oil suction port.
  • the front end cap has a support flange that projects axially toward the rotor of the motor assembly, the support flange is used to support the bearings of the motor assembly, and the bearings of the support flange, the motor shaft, and the motor assembly are collectively defined
  • the oil suction chamber connected to the oil suction port passes through the support flange through the oil passage to communicate the oil suction chamber and the circulating oil passage.
  • the oil pump assembly is mounted on the front end cover of the motor assembly, and the total oil inlet port is disposed on the front end cover and is in communication with the circulating oil passage.
  • the total oil inlet is provided above the front end cover.
  • the electric oil pump assembly has an oil pumping chamber mounted on a front end cover of the motor assembly, and the oil pump assembly is mounted in the oil pump chamber, the oil pump chamber being filled with oil.
  • the oil pump chamber is in communication with the total oil inlet and the oil suction port is coupled to the oil pump chamber.
  • the front end cover is provided with an oil outlet passage, one end of which is connected to the oil discharge port of the oil pump assembly, and the other end forms a total oil outlet.
  • the oil pump chamber is coupled to the oil drain of the oil pump assembly and to the total oil outlet.
  • the front end cover is provided with an oil outlet passage, one end of which is connected to the oil pump chamber and the other end forms a total oil outlet.
  • the oil pump assembly is floatingly supported on the front end cover.
  • the electric oil pump assembly further includes: an elastic member and a positioning member, the positioning member passes through the oil pump assembly and the front end cover, and is in clearance fit with the oil pump assembly, the elastic member is in contact with the oil pump assembly to apply the oil pump assembly toward the motor assembly Axial preload force.
  • the positioning member is a bolt
  • the outer periphery of the oil pump assembly is provided with a lug.
  • the lug is provided with a positioning hole.
  • the bolt penetrates the positioning hole and is screwed with the front end cover.
  • the elastic member is a spring and is sleeved outside the bolt. The spring elasticity stops between the lug and the head of the bolt.
  • the electric oil pump assembly further includes: a magnetic member mounted on the front end cover, and the front cover of the oil pump assembly is made of a ferromagnetic material.
  • the front cover is provided with a recess, at least a portion of the magnetic member projecting from the front end cover and extending into the recess and engaging the recess.
  • the oil pump assembly and the front end cover are pre-positioned by the positioning unit, and the positioning unit cooperates with the at least one of the oil pump assembly and the front end cover in a radial clearance, the rear cover of the oil pump assembly and the top wall of the oil pump chamber Magnetic members having opposite magnetic pole directions are respectively provided.
  • the electric oil pump assembly further includes a buckle that is coupled between the oil pump assembly and the front end cover and that is in clearance engagement with the front end cover.
  • one end of the buckle is fixedly coupled to the front end cover, and the other end is provided with a hook that engages with the front cover of the oil pump assembly, and the hook is axially restrained from the front cover.
  • the front cover is provided with a snap groove
  • the buckle extends through the snap groove and is in clearance with the snap groove
  • the end surface of the hook facing the front cover is in clearance with the front cover
  • the hook has a guiding surface that is inclined from the inside to the outside in the radial direction of the front cover toward the front end cover.
  • the front end cap has an annular boss extending axially away from the motor assembly, the annular boss forming a sidewall of the oil pump chamber, the top wall of the oil pump chamber being coupled to the annular boss by a threaded fastener.
  • the electric oil pump assembly further includes: a soundproof cover that is disposed outside the outer wall surface of the oil pump chamber.
  • the electric oil pump assembly further includes a low pressure shroud disposed outside the wall of the oil pump chamber and defining a low pressure chamber in communication with the total oil inlet, the low pressure shroud being coupled to the front end cover.
  • the low pressure shroud has a tapered peripheral wall and the inner diameter of the low pressure shroud tapers from a direction near the total oil inlet to a direction away from the total oil inlet.
  • a seal ring is interposed between the oil pump assembly and the front end cover.
  • the motor assembly and the oil pump assembly are transverse.
  • the present disclosure also proposes a steering system having an electric oil pump assembly as described above.
  • the present disclosure also proposes a lubrication system having an electric oil pump assembly as described above.
  • an electric oil pump assembly 1000 includes a motor assembly 200 and an oil pump assembly 100.
  • the oil pump assembly 100 is coupled to the motor shaft 250 for driving the motor pump assembly 100.
  • the motor shaft 250 of the motor assembly 200 can be coupled to the oil pump shaft 130 of the oil pump assembly 100 via the coupling 410.
  • the motor assembly 200 is not limited to directly driving the oil pump assembly 100, and may be coupled to the oil pump assembly 100 through a transmission mechanism such as a gearbox or a speed reducer.
  • the oil pump assembly 100 operates under the drive of the motor assembly 200 to convert low pressure oil into a high pressure oil output.
  • the oil pump assembly 100 can be in a variety of configurations.
  • the oil pump assembly 100 can be an external gear pump, a cycloid gear pump, a vane pump or
  • the motor assembly 200 may be various types of motors such as a synchronous motor and an asynchronous motor.
  • the oil pump assembly 100 is mounted at the end of the motor assembly 200, the oil pump assembly 100 can be mounted on the front end cover 210 of the motor assembly 200, the oil pump assembly 100 can be mounted directly on the front end cover 210, or the oil pump assembly 100 can pass other mounting structures (oil pump)
  • the assembly 100 can be indirectly mounted on the front end cover 210 by a support plate member.
  • the front cover plate 110 of the oil pump assembly 100 can be supported on the front end cover 210 of the motor assembly 200, wherein the front cover plate 110 is the power of the oil pump assembly 100.
  • the electric oil pump assembly 1000 has a total oil inlet port 1010 and a total oil outlet port 1020.
  • the oil enters the electric oil pump assembly 1000 from the total oil inlet port 1010 and flows out from the total oil outlet port 1020.
  • the oil pump assembly 100 has an oil suction port and an oil discharge port, and low pressure (normal pressure) oil is sucked into the cavity of the oil pump assembly 100 from the oil suction port, and is converted into high pressure oil to be discharged from the oil discharge port.
  • a motor shaft oil passage 251 is disposed in the motor shaft 250 of the motor assembly 200.
  • the motor shaft oil passage 251 can extend along the axial direction of the motor shaft 250.
  • the motor shaft oil passage 251 communicates with the total oil inlet port 1010, and the oil suction port of the oil pump assembly 100. It is in communication with the motor shaft oil passage 251, and the oil discharge port of the oil pump assembly 100 is in communication with the total oil outlet 1020.
  • the flow path of the oil is: the total oil inlet 1010 - the motor shaft oil passage 251 - the oil suction port of the oil pump assembly 100 - the oil discharge port of the oil pump assembly 100 - the total oil outlet 1020, so that the low pressure oil can be
  • the oil is converted into high-pressure oil, and the circulating fluid can take away the heat of the motor assembly 200 through the motor shaft 250 to ensure stable operation of the motor assembly 200.
  • the motor assembly 200 does not need to separately set the heat dissipation unit, and can reduce the volume of the electric oil pump assembly 1000 and weight.
  • the oil absorption of the oil pump assembly 100 is achieved by providing the motor shaft oil passage 251, which helps to improve the heat dissipation performance and working stability of the electric oil pump assembly 1000, and has high integration and high light weight level.
  • the motor assembly 200 may include a front end cover 210, a motor case 220, a rear end cover 230, a stator 241, and a rotor 242.
  • the front end cover 210 is mounted at the front end of the motor casing 220, and the front end cover 210 may be connected to the front end of the motor casing 220 by a threaded fastener, the rear end cover 230 closing the rear end of the motor casing 220, and the rear end cover 230 may be threaded.
  • the fastener is connected to the rear end of the motor casing 220.
  • the front end represents the output end of the motor assembly 200 (the right end in FIGS. 1 to 38), and the rear end represents the end axially away from the output end (FIG. 1). - the left end in Figure 38).
  • the motor assembly 200 can have a liquid cooling chamber 260 that can communicate with the total oil inlet 1010 and the motor shaft oil passage 251 communicate with the total oil inlet 1010 through the liquid cooling chamber 260.
  • the liquid cooling chamber 260 can be a free space in the cabin of the motor assembly 200.
  • the flow path of the oil is: the total oil inlet 1010 - the liquid cooling chamber 260 - the motor shaft oil passage 251 - the oil pump assembly 100 sucks the oil The oil discharge port of the port-oil pump assembly 100 - the total oil outlet 1020.
  • the compartment of the motor assembly 200 is filled with flowing oil, and the components inside the motor assembly 200 are immersed in the oil, and the stator 241 and the rotor 242 can be in full contact with the oil. Since the heat capacity of the oil is large, the stator 241 can be avoided. And the local high temperature generated by the rotor 242 due to load fluctuation, the flowing oil simultaneously provides heat dissipation and lubrication for the moving parts, ensuring stable operation of the motor assembly 200, and reducing working noise.
  • the rotor 242 of the motor assembly 200 can be immersed in the oil (low pressure oil), so that the oil can act to delay the rotation of the rotor 242 to buffer the sudden acceleration or sudden deceleration of the rotor 242 and the excessive inertia modulus.
  • the electric oil pump assembly 1000 is used in the steering system 1, the impact on the steering oil passage when the motor assembly 200 is thrown off can be prevented, the steering feel is better, and the steering wheel is not easily shaken.
  • the liquid cooling chamber 260 includes a circulation oil passage 262 and a rear chamber 261.
  • the circulating oil passage 262 is located between the stator 241 and the motor casing 220, and the circulating oil passage 262 extends along the axial direction of the motor assembly 200. As shown in FIG. 39, there may be a plurality of circulating oil passages 262, as shown in FIG. In the illustrated embodiment, there may be four circulating oil passages 262, and a plurality of circulating oil passages 262 may be arranged along the circumferential direction of the stator 241 such that the circumference of the motor assembly 200 is uniformly radiated, and the circulating oil passage 262 may be The total oil inlet 1010 is connected, and the total oil inlet 1010 may be disposed at an upper portion of the electric oil pump assembly 1000 to facilitate gas discharge when the oil flows in. The total oil inlet 1010 may be connected to the uppermost one of the oil passages 262. Connected.
  • the rear cavity 261 is located between the rear end cover 230 and the stator 241, the motor shaft 250 and the rotor 242.
  • the rear cavity 261 is in communication with the circulating oil passage 262.
  • the rear end of each of the circulating oil passages 262 may be connected to the rear cavity. 261 connected.
  • the motor shaft oil passage 251 extends in the axial direction, and the motor shaft oil passage 251 is open at an end remote from the oil pump assembly 100, and the motor shaft oil passage 251 is in communication with the liquid cooling chamber 260 at the end, specifically, the motor shaft oil passage 251 is The end is connected to the rear cavity 261, and the rear end cover 230 can have a support base 231 for supporting the rear end of the motor shaft 250 (through the bearing), as shown in FIG. 1, FIG. 4, FIG. 5, FIG. 13. In FIG. 14, FIG. 19, FIG. 21, FIG. 22, FIG. 24, FIG. 26, FIG. 27, FIG. 29, FIG. 31, FIG. 32, FIG. 34, FIG. 36, FIG. 37, the support base 231 may be provided.
  • the oil passage passage connects the rear cavity 261 and the motor shaft oil passage 251, so that the relatively closed space formed by the support base 231 and the bearing can prevent the oil turbulent flow in the liquid cooling chamber 260 caused by the oil absorption of the motor shaft oil passage 251.
  • the other end of the motor shaft oil passage 251 (near the end of the oil pump assembly 100) is provided with a radially extending oil supply hole 252 through which the oil supply hole 252 can communicate.
  • the front end cover 210 may have a support flange 211 protruding in the axial direction toward the rotor 242 of the motor assembly 200.
  • the support flange 211 may be a circular ring, and the support flange 211 is used to support the motor assembly 200.
  • the bearings, the support flange 211, the motor shaft 250, and the bearings of the motor assembly 200 collectively define an oil suction chamber 263.
  • the oil suction chamber 263 is connected to the oil suction port, and the oil supply hole 252 is connected to the oil suction chamber 263.
  • the oil suction chamber 263 is equivalent to providing a buffer space for the oil pump assembly 100 to absorb oil, which is convenient for the oil to be left from the oil supply hole 252 having a relatively small aperture.
  • An oil retaining ring 271 may be disposed between the stator 241 and the front end cover 210.
  • the oil retaining ring 271 may be made of oil resistant material, and the oil retaining ring 271 may be linoleum, etc., as shown in FIG. 1, FIG. 4, FIG. 5, FIG. 13, 14, 19, 21, 22, 24, 26, 27, 29, 31, 32, 34, 36, and 37, the oil retaining ring 271 may be An annular shape, and the oil retaining ring 271 can be sleeved outside the support flange 211.
  • a portion of the stator 241 close to the front end cover 210 can be sleeved outside the oil retaining ring 271, and the oil retaining ring 271 can prevent the oil pump assembly 100 from directly from the nearby cavity.
  • the body absorbs oil so that the oil flows well throughout the motor assembly 200 to balance heat dissipation.
  • the gap does not affect the overall flow direction of the oil.
  • the overall flow path of the oil can be ensured: the total oil inlet 1010 - the circulating oil passage 262 - the rear chamber 261 - the motor shaft oil passage 251 - the oil supply hole 252 - the oil suction chamber 263 - the oil suction port of the oil pump assembly 100 - The oil discharge port of the oil pump assembly 100 - the total oil outlet 1020.
  • An electric oil pump assembly 1000 that discloses an embodiment includes a motor assembly 200 and an oil pump assembly 100.
  • the oil pump assembly 100 is coupled to the motor shaft 250 for driving the motor pump assembly 100.
  • the motor shaft 250 of the motor assembly 200 can be coupled to the oil pump shaft 130 of the oil pump assembly 100 via the coupling 410.
  • the motor assembly 200 is not limited to directly driving the oil pump assembly 100, and may be coupled to the oil pump assembly 100 through a transmission mechanism such as a gearbox or a speed reducer.
  • the oil pump assembly 100 operates under the drive of the motor assembly 200 to convert low pressure oil into a high pressure oil output.
  • the oil pump assembly 100 can be in a variety of configurations.
  • the oil pump assembly 100 can be an external gear pump, a cycloid gear pump, a vane pump or
  • the motor assembly 200 may be various types of motors such as a synchronous motor and an asynchronous motor.
  • the oil pump assembly 100 is mounted at the end of the motor assembly 200, the oil pump assembly 100 can be mounted on the front end cover 210 of the motor assembly 200, the oil pump assembly 100 can be mounted directly on the front end cover 210, or the oil pump assembly 100 can pass other mounting structures (oil pump)
  • the assembly 100 can be indirectly mounted on the front end cover 210 by a support plate member.
  • the front cover plate 110 of the oil pump assembly 100 can be supported on the front end cover 210 of the motor assembly 200, wherein the front cover plate 110 is the power of the oil pump assembly 100.
  • the electric oil pump assembly 1000 has a total oil inlet port 1010 and a total oil outlet port 1020.
  • the oil enters the electric oil pump assembly 1000 from the total oil inlet port 1010 and flows out from the total oil outlet port 1020.
  • the oil pump assembly 100 has an oil suction port and an oil discharge port, and low pressure (normal pressure) oil is sucked into the cavity of the oil pump assembly 100 from the oil suction port, and is converted into high pressure oil to be discharged from the oil discharge port.
  • the motor assembly 200 has a liquid cooling chamber 260.
  • the liquid cooling chamber 260 can communicate with the total oil inlet 1010. The oil is sucked into the oil pump assembly 100 through the liquid cooling chamber 260.
  • the liquid cooling chamber 260 can be a free space in the cabin of the motor assembly 200. The oil flows into the liquid cooling chamber 260 through the total oil inlet 1010, and the oil is filled in the liquid cooling chamber 260, and the components (the stator 241, the rotor 242, and the like) corresponding to the inside of the motor unit 200 are immersed in the oil.
  • the liquid cooling chamber 260 is filled with flowing oil, and the internal components of the motor assembly 200 are immersed in the oil, and the stator 241 and the rotor 242 can be in full contact with the oil. Since the heat capacity of the oil is large, the stator 241 and the stator 241 can be avoided. The local high temperature of the rotor 242 due to load fluctuations, the flowing oil simultaneously provides heat dissipation and lubrication for the moving parts, ensuring stable operation of the motor assembly 200, and reducing operating noise.
  • the rotor 242 of the motor assembly 200 can be immersed in the oil (low pressure oil), so that the oil can act to delay the rotation of the rotor 242 to buffer the sudden acceleration or sudden deceleration of the rotor 242 and the excessive inertia modulus.
  • the electric oil pump assembly 1000 is used in the steering system 1, the impact on the steering oil passage when the motor assembly 200 is thrown off can be prevented, the steering feel is better, and the steering wheel is not easily shaken.
  • the liquid cooling chamber 260 includes a circulation oil passage 262 which is located between the stator 241 of the motor assembly 200 and the motor housing 220 of the motor assembly 200. It can be understood that the cavity between the motor housing 220 and the stator 241 is understood.
  • a circulation oil passage 262 may be formed, and the circulation oil passage 262 may extend in the axial direction of the motor assembly 200.
  • the oil suction port of the oil pump assembly 100 communicates with the circulation oil passage 262, and the oil discharge port of the oil pump assembly 100 communicates with the total oil outlet port 1020.
  • the flow path of the oil is: the total oil inlet 1010 - the circulating oil passage 262 - the oil suction port of the oil pump assembly 100 - the oil discharge port of the oil pump assembly 100 - the total oil outlet 1020, so that the low pressure oil can be converted It is a high-pressure oil, and the circulating fluid can take away the heat of the motor assembly 200. In particular, a large amount of heat can be taken away by the stator 241 to ensure stable operation of the motor assembly 200.
  • the motor assembly 200 does not need to be separately provided with a heat-dissipating unit, and the electric motor can be reduced.
  • the volume and weight of the oil pump assembly 1000, and the formation of the circulating flow is simple and easy to manufacture.
  • the oil absorption of the oil pump assembly 100 and the heat dissipation of the motor assembly 200 are achieved by providing the circulation oil passage 262, which helps to improve the heat dissipation performance and working stability of the electric oil pump assembly 1000, and is highly integrated and light. The level of quantification is high.
  • the motor assembly 200 may include a front end cover 210, a motor case 220, a rear end cover 230, a stator 241, and a rotor 242.
  • the front end cover 210 is mounted at the front end of the motor casing 220, and the front end cover 210 may be connected to the front end of the motor casing 220 by a threaded fastener, the rear end cover 230 closing the rear end of the motor casing 220, and the rear end cover 230 may be threaded.
  • the fastener is connected to the rear end of the motor casing 220.
  • the front end represents the output end of the motor assembly 200 (the right end in FIGS. 1 to 38), and the rear end represents the end axially away from the output end (FIG. 1). - the left end in Figure 38).
  • the rear end cover 230 closes the rear end of the motor casing 220 to form the rear cavity 261 of the liquid cooling chamber 260.
  • the number of the circulating oil passages 262 may be plural. In the embodiment shown in FIG. 40, the circulation oil passages 262 may be four. And a plurality of circulating oil passages 262 may be circumferentially spaced apart, and a plurality of circulating oil passages 262 are communicated through the rear cavity 261.
  • the rear cavity 261 is located between the rear end cover 230 and the stator 241, the motor shaft 250 and the rotor 242.
  • the rear cavity 261 is in communication with the circulating oil passage 262.
  • the rear end of each of the circulating oil passages 262 may be connected to the rear cavity. 261 connected.
  • At least one of the plurality of circulating oil passages 262 is connected to the total oil inlet port 1010, and the oil first flows from the total oil inlet port 1010 into the circulating oil passage 262 and flows to the rear chamber 261, and at least one of the plurality of circulating oil passages 262
  • the oil in a circulating oil passage 262 flows from the rear to the front and is connected to the oil suction port, that is, the oil in the circulating oil passage 262 flows from the rear chamber 261 toward the front end cover 210, and then flows into the oil pump through the oil suction port.
  • the assembly 100 as shown in FIG.
  • the oil in a portion of the plurality of circulating oil passages 262 flows from the rear to the front, and the oil in the other portion of the circulating oil passage 262 flows from the front to the rear, and the oil flows.
  • Two circulating oil passages 262 having different flow directions are staggered in the circumferential direction.
  • the plurality of circulating oil passages 262 may be designed in pairs, and the flow direction of the oil may be alternately designed, and the oil flows circulating in the motor casing 220 to dissipate heat from the motor assembly 200.
  • one of the plurality of circulating oil passages 262 (the uppermost one of the circulating oil passages 262 in the embodiment shown in FIG. 40) is connected to the total oil inlet port 1010 to allow the oil to pass through
  • One of the circulating oil passages 262 flows into the liquid cooling chamber 260, and the total oil inlet port 1010 may be provided at an upper portion of the electric oil pump assembly 1000 to facilitate gas discharge when the oil flows in.
  • the front end cover 210 can be An oil passage 214 is provided, and the circulation oil passage 262 communicates with the oil suction port through the oil passage 214.
  • the front end cover 210 may have a support flange 211 that protrudes axially toward the rotor 242 of the motor assembly 200.
  • the support flange 211 may be annular, and the support flange 211 is for supporting a bearing of the motor assembly 200, and the support flange 211
  • the bearings of the motor shaft 250 and the motor assembly 200 together define an oil suction chamber 263.
  • the oil suction chamber 263 is connected to the oil suction port.
  • the oil passage 214 can penetrate the support flange 211 to communicate the oil suction chamber 263 and the circulation oil passage 262.
  • the oil suction chamber 263 is equivalent to providing a buffer space for the oil pump assembly 100 to absorb oil.
  • the support flange 211 and the relatively closed space formed by the bearing can prevent oil turbulence in the liquid cooling chamber 260 caused by the oil pump assembly 100 from sucking oil.
  • An oil retaining ring 271 may be disposed between the stator 241 and the front end cover 210.
  • the oil retaining ring 271 may be made of oil resistant material, and the oil retaining ring 271 may be linoleum, etc., as shown in FIG. 2, FIG. 6, FIG. 7, FIG.
  • the oil retaining ring 271 may be annular and sleeved outside the support flange 211, and the stator A portion of the 241 near the front end cover 210 may be sleeved outside the oil retaining ring 271.
  • the oil retaining ring 271 prevents the oil pump assembly 100 from directly sucking oil from the nearby cavity, so that the oil flows well throughout the motor assembly 200. Balance the heat. It should be noted that the area of the oil slinger 271 corresponding to the oil passage 214 can be hollowed out to prevent the oil slinger 271 from impeding the oil pump assembly 100 from sucking through the oil passage 214.
  • the gap does not affect the overall flow direction of the oil.
  • the overall flow path of the oil can be ensured: the total oil inlet 1010 - the circulating oil passage 262 - the rear chamber 261 - the circulating oil passage 262 - the oil passage 214 - the oil suction chamber 263 - the oil suction port of the oil pump assembly 100 - the oil pump The oil drain port of the assembly 100 - the total oil outlet 1020.
  • an electric oil pump assembly 1000 includes a motor assembly 200 and an oil pump assembly 100.
  • the oil pump assembly 100 is coupled to the motor shaft 250 for driving the motor pump assembly 100.
  • the motor shaft 250 of the motor assembly 200 can be coupled to the oil pump shaft 130 of the oil pump assembly 100 via the coupling 410.
  • the motor assembly 200 is not limited to directly driving the oil pump assembly 100, and may be coupled to the oil pump assembly 100 through a transmission mechanism such as a gearbox or a speed reducer.
  • the oil pump assembly 100 operates under the drive of the motor assembly 200 to convert low pressure oil into a high pressure oil output.
  • the oil pump assembly 100 can be in a variety of configurations.
  • the oil pump assembly 100 can be an external gear pump, a cycloid gear pump, a vane pump or
  • the motor assembly 200 may be various types of motors such as a synchronous motor and an asynchronous motor.
  • the oil pump assembly 100 is mounted at the end of the motor assembly 200, the oil pump assembly 100 can be mounted on the front end cover 210 of the motor assembly 200, the oil pump assembly 100 can be mounted directly on the front end cover 210, or the oil pump assembly 100 can pass other mounting structures (oil pump)
  • the assembly 100 can be indirectly mounted on the front end cover 210 by a support plate member.
  • the front cover plate 110 of the oil pump assembly 100 can be supported on the front end cover 210 of the motor assembly 200, wherein the front cover plate 110 is the power of the oil pump assembly 100.
  • the electric oil pump assembly 1000 has a total oil inlet port 1010 and a total oil outlet port 1020.
  • the oil enters the electric oil pump assembly 1000 from the total oil inlet port 1010 and flows out from the total oil outlet port 1020.
  • the oil pump assembly 100 has an oil suction port and an oil discharge port, and low pressure (normal pressure) oil is sucked into the cavity of the oil pump assembly 100 from the oil suction port, and is converted into high pressure oil to be discharged from the oil discharge port.
  • the motor assembly 200 of the electric oil pump assembly 1000 has an oil pump chamber 1030.
  • the front end cover 210 of the motor assembly 200 defines an oil pump chamber 1030 that is not limited solely by the front end cover 210.
  • the front end cover 210 may only define a portion of the oil pump chamber 1030.
  • the wall, the compartment of the motor assembly 200 is isolated from the oil pump chamber 1030, and the compartment of the motor assembly 200 and the oil pump chamber 1030 are blocked by the front end cover 210 of the motor assembly 200.
  • the motor assembly 200 may be liquid-cooled (oil-cooled), and the cooling oil of the motor assembly 200 is separated from the oil of the oil pump assembly 100.
  • the motor assembly 200 may have a liquid cooling chamber 260, a liquid cooling chamber 260 and an oil pump assembly 100. The isolation, in particular, the liquid cooling chamber 260 and the oil pump assembly 100 can be isolated by the front end cover 210.
  • the oil pump assembly 100 is located in the oil pump chamber 1030.
  • the oil suction port of the oil pump assembly 100 is in communication with the total oil inlet port 1010.
  • the oil discharge port of the oil pump assembly 100 communicates with the total oil outlet port 1020, and the total oil inlet port 1010 and the total oil outlet port 1020 are One of them is in communication with the oil pump chamber 1030.
  • the periphery of the oil pump assembly 100 is surrounded by oil, and the vibration noise of the oil pump assembly 100 can be absorbed by the oil in the oil pump chamber 1030 and reflected by the wall surface of the oil pump chamber 1030 to reduce the operating noise of the electric oil pump assembly 1000.
  • the operating noise of the oil pump assembly 100 can be effectively absorbed, and the pump oil of the oil pump assembly 100 is not interfered by the flow of oil within the motor assembly 200, the electric oil pump The pumping capacity of the assembly 1000 is higher and the work is stable.
  • the oil pump chamber 1030 is in communication with the total oil inlet 1010.
  • the oil suction port of the oil pump assembly 100 may be connected to the oil pump chamber 1030, and the oil pump chamber 1030 is connected to the total oil inlet 1010.
  • the oil suction port of the oil pump assembly 100 can communicate with the total oil inlet 1010 through the oil pump chamber 1030, and the oil discharge port of the oil pump assembly 100 communicates with the total oil outlet 1020.
  • the front end cover 210 may be provided with an oil outlet passage 212.
  • One end of the oil discharge passage 212 is connected to the oil discharge port of the oil pump assembly 100, and the other end of the oil discharge passage 212 forms a total oil outlet port 1020.
  • the front end cover 210 is also provided with an oil inlet passage. 215, the total oil inlet port 1010 and the oil pump chamber 1030 are in communication through the oil inlet passage 215.
  • the flow path of the oil is: total oil inlet 1010 - oil inlet passage 215 - oil pump chamber 1030 - oil suction port of oil pump assembly 100 - oil discharge port of oil pump assembly 100 - oil outlet passage 212 - total oil outlet port 1020, thus
  • the low pressure oil can be converted into a high pressure oil, and the periphery of the oil pump assembly 100 is wrapped by the low pressure oil.
  • the vibration noise of the oil pump assembly 100 can be absorbed by the low pressure oil in the oil pump chamber 1030 and reflected by the wall surface of the oil pump chamber 1030 to reduce the total electric oil pump.
  • Working noise of 1000 working noise of 1000.
  • the pressure of the oil pump chamber 1030 is small, which is convenient for sealing.
  • the wall surface of the oil pump chamber 1030 does not have the function of a high pressure container, and is not limited by the influence of strength, and provides a possibility of lightweight design.
  • the wall surface of the oil pump chamber 1030 can be set thin.
  • the wall surface of the oil pump chamber 1030 can be made of thin-walled metal to reduce the footprint and weight of the electric oil pump assembly 1000.
  • the oil pump chamber 1030 is in communication with the total oil inlet 1010. As shown in FIGS. 3, 8, 9, 12, and 17, the oil pump chamber 1030 is connected to the oil discharge port of the oil pump assembly 100. The oil pump chamber 1030 is in communication with the total oil outlet 1020. The oil discharge port of the oil pump assembly 100 can communicate with the total oil outlet 1020 through the oil pump chamber 1030. The oil suction port of the oil pump assembly 100 communicates with the total oil inlet 1010.
  • the front end cover 210 is provided with an oil outlet passage 212 and an oil inlet passage 215.
  • One end of the oil discharge passage 212 is connected to the oil pump chamber 1030, and the other end of the oil discharge passage 212 forms a total oil outlet 1020, and one end of the oil inlet passage 215 and the total inlet
  • the oil port 1010 is in communication, and the other end of the oil inlet passage 215 is connected to the oil suction port.
  • the flow path of the oil is: total oil inlet port 1010 - oil inlet passage 215 - oil suction port of oil pump assembly 100 - oil discharge port of oil pump assembly 100 - oil pump chamber 1030 - oil outlet passage 212 - total oil outlet port 1020, thus Low pressure oil can be converted to high pressure oil.
  • the periphery of the oil pump assembly 100 is wrapped by high pressure oil, and the vibration noise of the oil pump assembly 100 can be absorbed by the high pressure oil in the oil pump chamber 1030 and reflected by the wall surface of the oil pump chamber 1030 to reduce the operating noise of the electric oil pump assembly 1000.
  • the oil pump chamber 1030 can function to eliminate oil pulsation and perform fluid silencing, and the elimination of various frequency noise can be achieved by designing the size of the oil pump chamber 1030.
  • the high pressure oil of the oil pump chamber 1030 can apply an axial thrust P to the oil pump assembly 100, and the pressure applied by the high pressure oil to the rear cover 120 of the oil pump assembly 100 can support the oil pump assembly 100 at the front end cover of the motor assembly 200. 210, such that the oil pump assembly 100 can be subjected to additional axial forces during operation, the manner of fixing the oil pump assembly 100 is lessened, and the oil pump assembly 100 can remain relatively stable and fixed during operation.
  • an electric oil pump assembly 1000 includes a motor assembly 200, an oil pump assembly 100, and an elastic member 311.
  • the oil pump assembly 100 is coupled to the motor shaft 250 for driving the motor pump assembly 100.
  • the motor shaft 250 of the motor assembly 200 can be coupled to the oil pump shaft 130 of the oil pump assembly 100 via the coupling 410.
  • the motor assembly 200 is not limited to directly driving the oil pump assembly 100, and may be coupled to the oil pump assembly 100 through a transmission mechanism such as a gearbox or a speed reducer.
  • the oil pump assembly 100 operates under the drive of the motor assembly 200 to convert low pressure oil into a high pressure oil output.
  • the oil pump assembly 100 can be in a variety of configurations.
  • the oil pump assembly 100 can be an external gear pump, a cycloid gear pump, a vane pump or
  • the motor assembly 200 may be various types of motors such as a synchronous motor and an asynchronous motor.
  • the oil pump assembly 100 is floatingly mounted at the end of the motor assembly 200.
  • the oil pump assembly 100 can be floatingly mounted on the front end cover 210 of the motor assembly 200.
  • the oil pump assembly 100 can be directly floatingly mounted on the front end cover 210, or the oil pump assembly 100 can be installed by other means.
  • the structure (the oil pump assembly 100 may be indirectly floatingly mounted on the front end cover 210 by the support plate member), in particular, the front cover plate 110 of the oil pump assembly 100 may be supported on the front end cover 210 of the motor assembly 200, wherein the front cover plate 110 is an oil pump
  • the cover of the power input end of the assembly 100 that is, the oil pump shaft 130, projects from the front cover 110, and correspondingly, the rear cover 120 is a cover of the other end of the oil pump assembly 100.
  • the electric oil pump assembly 1000 has a total oil inlet port 1010 and a total oil outlet port 1020.
  • the oil enters the electric oil pump assembly 1000 from the total oil inlet port 1010 and flows out from the total oil outlet port 1020.
  • the oil pump assembly 100 has an oil suction port and an oil discharge port, and low pressure (normal pressure) oil is sucked into the cavity of the oil pump assembly 100 from the oil suction port, and is converted into high pressure oil to be discharged from the oil discharge port.
  • the elastic member 311 is elastically connected between the motor assembly 200 and the oil pump assembly 100.
  • the oil pump assembly 100 is floatingly mounted on the front end cover 210.
  • the elastic member 311 can be elastically coupled between the front end cover 210 and the oil pump assembly 100 to apply to the oil pump assembly 100.
  • the axial preload force toward the motor assembly 200, or the elastic member 311 is in contact with or connected to the oil pump assembly 100 to apply an axial preload force to the oil pump assembly 100 that causes the oil pump assembly 100 to be floatingly supported on the front end cover 210 of the motor assembly 200.
  • the oil pump assembly 100 is pre-compressed on the front end cover 210 of the motor assembly 200 by the elastic force of the elastic member 311, and the elastic member 311 can be axially coupled to the housing of the oil pump assembly 100 and the motor assembly 200.
  • the housing of the oil pump assembly 100 may be provided with lugs 112 protruding outward in the radial direction.
  • the lugs 112 and the front end cover 210 may be axially spaced apart, and the elastic members 311 may be elastically stretched. It is connected between the lug 112 and the front end cover 210, or the elastic member 311 may be compression-connected between the housing of the oil pump assembly 100 and the front end cover 210 of the motor assembly 200 in the axial direction.
  • the elastic preload of the elastic member 311 to the oil pump assembly 100 causes the oil pump assembly 100 to be pre-compressed on the front end cover 210 of the motor assembly 200, ensuring the tightness of the oil pump assembly 100, and does not need to be performed on the oil pump assembly 100 during assembly.
  • the bolt is locked with a large torque, and the pre-tightening force provided by the elastic member 311 only needs to ensure that the oil pump assembly 100 is installed, so that the working friction force of the oil pump assembly 100 can be reduced, the working energy efficiency of the oil pump assembly 100 can be improved, and the mechanical mechanism of the oil pump assembly 100 can be improved. higher efficiency.
  • the oil pump assembly 100 Since the oil pump assembly 100 is suspended and does not need to be bolted to the housing, the oil pump assembly 100 can have a certain amount of movement in the radial direction and the axial direction under the application of a certain force.
  • the motor shaft 250 of the motor assembly 200 is provided.
  • the oil pump shaft 130 of the oil pump assembly 100 can be adaptively centered, effectively avoiding noise caused by the misalignment of the motor shaft 250, the coupling 410, and the oil pump shaft 130, and due to the characteristics of the adaptive centering.
  • the machining accuracy requirements of the machining motor shaft 250, the coupling 410 and the oil pump shaft 130 can be reduced to reduce the processing cost and assembly precision requirements of the electric oil pump assembly 1000.
  • the output pulse of the oil pump assembly 100 can overcome the elastic force of the elastic member 311 to axially displace the oil pump assembly 100 to reduce or even eliminate the output pulse of the oil pump assembly 100.
  • the working friction of the oil pump assembly 100 can be reduced, the working energy efficiency of the oil pump assembly 100 can be improved, and the oil pump assembly 100 can be lowered.
  • the output pulse, and the electric oil pump assembly 1000 has the characteristics of adaptive alignment, which can reduce the machining accuracy and assembly precision requirements of the electric oil pump assembly 1000.
  • the electric oil pump assembly 1000 may further include: a positioning member 312
  • the positioning member 312 is coupled between the oil pump assembly 100 and the front end cover 210, and the positioning member 312 is radially-engaged with at least one of the oil pump assembly 100 and the front end cover 210 of the motor assembly 200.
  • the positioning member 312 can be fixedly coupled to the oil pump assembly 100 (without radial clearance activity) and the positioning member 312 can be radially spaced into engagement with the front end cover 210; in another alternative embodiment The positioning member 312 can be engaged with the oil pump assembly 100 in a radial clearance, and the positioning member 312 can be fixedly coupled to the front end cover 210 (without radial clearance activity); in an alternative embodiment, the positioning member 312 can be coupled to the oil pump. The assembly 100 is mated with a radial clearance and the positioning member 312 can be radially spaced into engagement with the front end cover 210.
  • the positioning member 312 is used for pre-positioning and transmitting torque. According to the clearance fit of the positioning member 312 with the oil pump assembly 100 or the front end cover 210, the radial floating stroke of the oil pump assembly 100 can be defined, and the oil pump assembly 100 is always at the radial center. Near the district.
  • the positioning member 312 can be a bolt, and the outer circumference of the oil pump assembly 100 can be provided with a lug 112.
  • the lug 112 can be provided with a positioning hole, the bolt penetrates the positioning hole, and the bolt is screwed with the front end cover 210, and the bolt and the positioning hole are gapped. Cooperate so that the oil pump assembly 100 can be radially floated.
  • the positioning member 312 is axially fixed relative to the motor assembly 200, is not easily detached, and the transmission torque is more stable.
  • the elastic member 311 may be a spring, and the elastic member 311 is sleeved outside the bolt, and the spring elastically stops between the lug 112 and the head of the bolt.
  • the lug 112 can stop against the spring, and under the force of the oil pump assembly 100, the oil pump assembly 100 can be axially floated to further compress the spring toward the head of the bolt or Reduce the compression range.
  • the lugs 112 are formed in a plurality of manners, and at least a portion of the edges of the front cover 110 of the oil pump assembly 100 extend radially outward to form the lugs 112 such that the lugs 112 substantially conform to the front end cover 210 of the motor assembly 200.
  • the pre-installation of the oil pump assembly 100 is more stable.
  • the lug 112 can be axially spaced from the front end cover 210, and at least a portion of the rim of the circumferential housing of the oil pump assembly 100 extends radially outwardly to form a lug 112, in this embodiment, the resilient member 311 It can be elastically stretched between the lug 112 and the front end cover 210.
  • the elastic member 311 can also be elastically restrained between the lug 112 and the head of the bolt as described in the above embodiment.
  • the positioning member 312 and the elastic member 311 may each be plural, and the plurality of lugs 112 are also arranged.
  • the plurality of lugs 112 are circumferentially spaced apart, and the plurality of positioning members 312 may be arranged along the circumferential direction of the oil pump assembly 100.
  • the plurality of elastic members 311 may be arranged along the circumferential direction of the oil pump assembly 100.
  • the lugs 112 may be evenly spaced apart in the circumferential direction, the plurality of positioning members 312, the plurality of elastic members 311, and the plurality of lugs 112. A correspondence.
  • the pre-mounting force of the oil pump assembly 100 in each direction in the circumferential direction is relatively uniform, and the oil pump assembly 100 is uniformly aligned when floating in the axial direction, and the constraints received in the respective directions are relatively balanced when floating in the radial direction.
  • an electric oil pump assembly 1000 includes a motor assembly 200, an oil pump assembly 100, and a magnetic member 321.
  • the oil pump assembly 100 is coupled to the motor shaft 250 for driving the motor pump assembly 100.
  • the motor shaft 250 of the motor assembly 200 can be coupled to the oil pump shaft 130 of the oil pump assembly 100 via the coupling 410.
  • the motor assembly 200 is not limited to directly driving the oil pump assembly 100, and may be coupled to the oil pump assembly 100 through a transmission mechanism such as a gearbox or a speed reducer.
  • the oil pump assembly 100 operates under the drive of the motor assembly 200 to convert low pressure oil into a high pressure oil output.
  • the oil pump assembly 100 can be in a variety of configurations.
  • the oil pump assembly 100 can be an external gear pump, a cycloid gear pump, a vane pump or
  • the motor assembly 200 may be various types of motors such as a synchronous motor and an asynchronous motor.
  • the oil pump assembly 100 is radially mounted on the end of the motor assembly 200, and the oil pump assembly 100 can be mounted on the front end cover 210 of the motor assembly 200 in a radial direction.
  • the oil pump assembly 100 can be directly mounted on the front end cover 210 in a radial direction.
  • the oil pump assembly 100 may be mounted on the front end cover 210 in a radially floating manner by other mounting structures (the oil pump assembly 100 may be supported by the support plate member).
  • the front cover plate 110 of the oil pump assembly 100 may be supported by the motor assembly 200.
  • the front cover 210 is a cover plate of the power input end of the oil pump assembly 100, that is, the oil pump shaft 130 protrudes from the front cover 110.
  • the rear cover 120 is a cover plate at the other end of the oil pump assembly 100.
  • the electric oil pump assembly 1000 has a total oil inlet port 1010 and a total oil outlet port 1020.
  • the oil enters the electric oil pump assembly 1000 from the total oil inlet port 1010 and flows out from the total oil outlet port 1020.
  • the oil pump assembly 100 has an oil suction port and an oil discharge port, and low pressure (normal pressure) oil is sucked into the cavity of the oil pump assembly 100 from the oil suction port, and is converted into high pressure oil to be discharged from the oil discharge port.
  • the magnetic member 321 is used to apply an axial magnetic force to the oil pump assembly 100 to support the oil pump assembly 100 in the radial direction at the end of the motor assembly 200.
  • the oil pump assembly 100 is radially supported on the front end cover 210, and the magnetic member 321 Can be a permanent magnet.
  • the magnetic member 321 may be fixedly coupled to the motor assembly 200, and the oil pump assembly 100 may be radially mounted to the end of the motor assembly 200 (front end cover 210) by magnetic attraction to the oil pump assembly 100, or the magnetic member 321 may be coupled to the oil pump assembly.
  • the oil pump assembly 100 is fixedly coupled, and the oil pump assembly 100 is radially mounted to the end of the motor assembly 200 (front end cover 210) by magnetic attraction to the motor assembly 200, or the magnetic member 321 is magnetically attracted to the oil pump assembly 100 and the motor
  • the magnetic attraction of the assembly 200 causes the oil pump assembly 100 to be mounted in the radial direction at the end of the motor assembly 200 (the front end cover 210).
  • the oil pump assembly 100 is mounted on the motor assembly 200 in a radial direction, and does not need to be bolted with a large torque on the oil pump assembly 100 during assembly.
  • the pre-tightening magnetic force provided by the magnetic member 321 only needs to ensure that the oil pump assembly 100 is installed. This can reduce the working friction of the oil pump assembly 100, improve the working energy efficiency of the oil pump assembly 100, and the mechanical efficiency of the oil pump assembly 100 is higher.
  • the oil pump assembly 100 Since the magnetic attraction is not a mandatory limit, the oil pump assembly 100 is suspended and does not need to be bolted to the housing. Under the application of a certain force, the oil pump assembly 100 can have a certain amount of movement in the radial direction, in the motor assembly 200.
  • the oil pump shaft 130 of the oil pump assembly 100 can be adaptively centered, effectively avoiding noise caused by the difference between the motor shaft 250, the coupling 410 and the oil pump shaft 130, and is adaptive.
  • the characteristics of the core can reduce the processing precision requirements for the machining motor shaft 250, the coupling 410 and the oil pump shaft 130, and reduce the processing cost and assembly precision requirements of the electric oil pump assembly 1000.
  • the 1000 by pre-installing the oil pump assembly 100 by providing the magnetic member 321 and floatingly mounting the oil pump assembly 100, the working friction force of the oil pump assembly 100 can be reduced, the working energy efficiency of the oil pump assembly 100 can be improved, and the electric oil pump assembly can be improved.
  • the 1000 has an adaptive alignment feature that reduces the machining accuracy and assembly accuracy requirements of the electric oil pump assembly 1000.
  • the electric oil pump assembly 1000 as shown in FIGS. 4, 6, 8, 21, 23, 31, and 33, the magnetic member 321 may be coupled to the front cover of the oil pump assembly 100. 110.
  • One of the front end covers 210 is connected, and the other of the front cover 110 and the front end cover 210 may be made of a ferromagnetic material.
  • a recess corresponding to the magnetic member 321 is disposed on the other of the front cover 110 and the front end cover 210, and at least a portion of the magnetic member 321 protrudes from both the front cover 110 and the front end cover 210. One of them is engaged with the groove in a radial gap, and the remaining portion of the magnetic member 321 is embedded in one of the front cover 110 and the front end cover 210.
  • the magnetic member 321 can be fixedly connected to the front cover 110 of the oil pump assembly 100. A part of the magnetic member 321 is embedded in the front cover 110, and another portion protrudes from the front cover 110.
  • the front end cover 210 of the motor assembly 200 can be provided with magnetic a corresponding recess of the member 321 , a portion of the magnetic member 321 protruding from the front cover 110 can extend into the recess and fit radially with the recess, and the front end cover 210 of the motor assembly 200 can be made of a ferromagnetic material.
  • the front end cover 210 may be a carbon steel material.
  • the magnetic member 321 may be fixedly coupled to the front end cover 210 of the motor assembly 200, a portion of the magnetic member 321 is embedded in the front end cover 210, and the other portion is protruded from the front end cover 210.
  • the front cover 110 of the oil pump assembly 100 may be provided with magnetic
  • the groove corresponding to the piece 321 , the portion of the magnetic member 321 protruding from the front end cover 210 can extend into the groove and fit radially with the groove, and the front cover 110 of the oil pump assembly 100 can be made of ferromagnetic material.
  • the front end cover 210 may be a carbon steel material.
  • the other of the front cover 110 and the front end cover 210 is provided with a boss corresponding to the magnetic member 321 , and the magnetic member 321 is provided with a groove, and the boss protrudes into the groove and the groove Fit along the radial gap.
  • the magnetic member 321 can be fixedly connected to the front cover 110 of the oil pump assembly 100.
  • the front end cover 210 of the motor assembly 200 can be provided with a boss corresponding to the magnetic member 321, and the magnetic member 321 is provided with a concave corresponding to the boss.
  • the groove, the boss can extend into the groove and cooperate with the groove in a radial gap.
  • the front end cover 210 of the motor assembly 200 can be made of a ferromagnetic material, and the front end cover 210 can be a carbon steel material.
  • the magnetic member 321 can be fixedly connected to the front end cover 210 of the motor assembly 200.
  • the front cover 110 of the oil pump assembly 100 can be provided with a boss corresponding to the magnetic member 321 , and the magnetic member 321 is provided corresponding to the boss.
  • the groove may protrude into the groove and cooperate with the groove in a radial gap.
  • the front cover 110 of the oil pump assembly 100 may be made of a ferromagnetic material, and the front end cover 210 may be a carbon steel material.
  • the magnetic member 321 can be used for pre-positioning and transmitting torque, and according to the clearance fit of the magnetic member 321 and the corresponding boss or groove, the radial floating stroke of the oil pump assembly 100 can be defined, and the oil pump assembly can be guaranteed. 100 is always near the radial center zone.
  • the magnetic member 321 may be plural, and the plurality of magnetic members 321 are circumferentially spaced apart. Preferably, the magnetic members 321 may be evenly spaced apart in the circumferential direction between the front end cover 210 and the front cover 110.
  • the pre-mounting force of the oil pump assembly 100 in each direction in the circumferential direction is relatively balanced, and when it is floated in the radial direction, the constraints received in each direction are also balanced.
  • an electric oil pump assembly 1000 as shown in FIG. 5, FIG. 7, FIG. 9, FIG. 22, FIG. 32, an electric oil pump assembly 1000 has an oil pump chamber 1030, and the oil pump assembly 100 is mounted on the oil pump In the chamber 1030, the oil pump chamber 1030 is connected to the oil discharge port of the oil pump assembly 100, and the oil pump chamber 1030 is in communication with the total oil outlet 1020.
  • the periphery of the oil pump assembly 100 is wrapped by high pressure oil, and the vibration noise of the oil pump assembly 100 can be absorbed by the high pressure oil in the oil pump chamber 1030 and reflected by the wall surface of the oil pump chamber 1030 to reduce the operating noise of the electric oil pump assembly 1000. .
  • the oil pump chamber 1030 can function to eliminate oil pulsation and perform fluid silencing, and the elimination of various frequency noise can be achieved by designing the size of the oil pump chamber 1030.
  • the high pressure oil of the oil pump chamber 1030 can apply an axial thrust to the oil pump assembly 100, and the pressure applied by the high pressure oil to the rear cover 120 of the oil pump assembly 100 can support the oil pump assembly 100 at the front end cover 210 of the motor assembly 200. In this way, the oil pump assembly 100 can be subjected to additional axial forces during operation, and the oil pump assembly 100 can remain relatively stable and fixed during operation.
  • the oil pump assembly 100 and the front end cover 210 may be pre-positioned by the positioning unit 322, and the positioning unit 322 is radially engaged with at least one of the oil pump assembly 100 and the front end cover 210, the rear cover 120 of the oil pump assembly 100 and the oil pump chamber.
  • the top wall 1031 of the 1030 is provided with magnetic members 321 having opposite magnetic pole directions.
  • the positioning unit 322 can be radially-engaged with the front cover 110 of the oil pump assembly 100, the positioning unit 322 can be embedded in the front end cover 210; or the positioning unit 322 can be radially-engaged with the front end cover 210, and the positioning unit 322 can be embedded in the oil pump assembly
  • Unit 322 can be radially gap-fitted with front end cover 210.
  • the positioning unit 322 can be a cylindrical pin.
  • the magnetic member 321 on the rear cover 120 of the oil pump assembly 100 can be embedded in the rear cover 120, and the magnetic member 321 on the top wall 1031 of the oil pump chamber 1030 can be embedded in the top wall 1031 of the oil pump chamber 1030.
  • the same magnetic poles of the magnetic member 321 of the position are oppositely disposed, N pole to N pole, S pole to S pole, preferably, the magnetic members 321 of the two positions are disposed opposite to each other, of course, if the rear cover of the oil pump assembly 100
  • the 120 and the front end cover 210 are made of a ferromagnetic material, and the magnetic members 321 at these two positions may also be staggered.
  • the magnetic member 321 may be plural, and the plurality of magnetic members 321 are circumferentially spaced apart. Preferably, the magnetic members 321 may be evenly spaced circumferentially between the rear cover 120 and the top wall 1031 of the oil pump chamber 1030. .
  • the pre-mounting force of the oil pump assembly 100 in each direction in the circumferential direction is relatively balanced, and when it is floated in the radial direction, the constraints received in each direction are also balanced.
  • an electric oil pump assembly 1000 includes a motor assembly 200, an oil pump assembly 100, and a buckle 331.
  • the oil pump assembly 100 is coupled to the motor shaft 250 for driving the motor pump assembly 100.
  • the motor shaft 250 of the motor assembly 200 can be coupled to the oil pump shaft 130 of the oil pump assembly 100 via the coupling 410.
  • the motor assembly 200 is not limited to directly driving the oil pump assembly 100, and may be coupled to the oil pump assembly 100 through a transmission mechanism such as a gearbox or a speed reducer.
  • the oil pump assembly 100 operates under the drive of the motor assembly 200 to convert low pressure oil into a high pressure oil output.
  • the oil pump assembly 100 can be in a variety of configurations.
  • the oil pump assembly 100 can be an external gear pump, a cycloid gear pump, a vane pump or
  • the motor assembly 200 may be various types of motors such as a synchronous motor and an asynchronous motor.
  • the oil pump assembly 100 is floatingly mounted at the end of the motor assembly 200.
  • the oil pump assembly 100 can be floatingly mounted on the front end cover 210 of the motor assembly 200.
  • the oil pump assembly 100 can be directly floatingly mounted on the front end cover 210, or the oil pump assembly 100 can be installed by other means.
  • the structure (the oil pump assembly 100 may be indirectly floatingly mounted on the front end cover 210 by the support plate member), in particular, the front cover plate 110 of the oil pump assembly 100 may be supported on the front end cover 210 of the motor assembly 200, wherein the front cover plate 110 is an oil pump
  • the cover of the power input end of the assembly 100 that is, the oil pump shaft 130, projects from the front cover 110, and correspondingly, the rear cover 120 is a cover of the other end of the oil pump assembly 100.
  • the electric oil pump assembly 1000 has a total oil inlet port 1010 and a total oil outlet port 1020.
  • the oil enters the electric oil pump assembly 1000 from the total oil inlet port 1010 and flows out from the total oil outlet port 1020.
  • the oil pump assembly 100 has an oil suction port and an oil discharge port, and low pressure (normal pressure) oil is sucked into the cavity of the oil pump assembly 100 from the oil suction port, and is converted into high pressure oil to be discharged from the oil discharge port.
  • the oil pump assembly 100 is floatingly mounted at an end of the motor assembly 200, the snap 331 is coupled between the oil pump assembly 100 and the motor assembly 200, and one of the oil pump assembly 100 and the motor assembly 200 is in clearance fit with the buckle 331, the oil pump assembly 100 and The other of the motor assemblies 200 is fixedly coupled to the buckle 331 to allow the oil pump assembly 100 to be floatingly supported on the motor assembly 200.
  • the oil pump assembly 100 is floatingly mounted on the front end cover 210, and the buckle 331 is connected between the oil pump assembly 100 and the front end cover 210, and one of the oil pump assembly 100 and the front end cover 210 is in clearance fit with the buckle 331, the oil pump assembly 100 and the front end cover The other of the 210 is fixedly coupled to the buckle 331 to allow the oil pump assembly 100 to be floatingly supported on the front end cover 210.
  • the buckle 331 can be fixedly connected to the front cover 110 of the oil pump assembly 100. One end of the buckle 331 is embedded in the front cover 110, and the buckle 331 is in clearance with the front end cover 210 of the motor assembly 200. Alternatively, the buckle 331 can be combined with the motor assembly.
  • the front end cover 210 of the 200 is fixedly connected, and one end of the buckle 331 is embedded in the front end cover 210, and the buckle 331 is in clearance fit with the front cover 110 of the oil pump assembly 100.
  • the buckle 331 is connected between the front end cover 210 and the oil pump assembly 100 to achieve the functions of limiting, prepositioning and transmitting torque, wherein the limit includes axial and radial limits, which need to be described herein.
  • the limit is not necessarily limited to jamming, but rather limits the amount of movement of the oil pump assembly 100 in the axial and/or radial directions.
  • the oil pump assembly 100 is pre-mounted on the front end cover 210 of the motor assembly 200 under the axial limit of the buckle 331, and does not require a large torque locking of the bolt on the oil pump assembly 100 during assembly, and the preload of the buckle 331 is provided.
  • the force or pre-limit only needs to ensure that the oil pump assembly 100 is installed, which can reduce the working friction of the oil pump assembly 100, improve the working energy efficiency of the oil pump assembly 100, and the mechanical efficiency of the oil pump assembly 100 is higher.
  • the oil pump assembly 100 Since the oil pump assembly 100 is suspended and does not need to be bolted to the housing, the oil pump assembly 100 can have a certain amount of movement in the radial direction and the axial direction under the application of a certain force.
  • the motor shaft 250 of the motor assembly 200 is provided.
  • the oil pump shaft 130 of the oil pump assembly 100 can be adaptively centered, effectively avoiding noise caused by the misalignment of the motor shaft 250, the coupling 410, and the oil pump shaft 130, and due to the characteristics of the adaptive centering.
  • the machining accuracy requirements of the machining motor shaft 250, the coupling 410 and the oil pump shaft 130 can be reduced, and the processing cost and assembly precision requirement of the electric oil pump assembly 1000 can be reduced.
  • the output pulse of the oil pump assembly 100 can overcome the spring force of the buckle 331 to axially displace the oil pump assembly 100 to reduce or even eliminate the output pulse of the oil pump assembly 100.
  • the working friction of the oil pump assembly 100 can be reduced, the working energy efficiency of the oil pump assembly 100 can be improved, and the oil pump assembly 100 can be lowered.
  • the output pulse, and the electric oil pump assembly 1000 has the characteristics of adaptive alignment, which can reduce the machining accuracy and assembly precision requirements of the electric oil pump assembly 1000.
  • An electric oil pump assembly 1000 according to a preferred embodiment of the present disclosure, as shown in FIGS. 10-12, 24, 25, 34, 35, and 41, one end of the buckle 331 is fixedly coupled to the front end cover 210, The end of the buckle 331 can be embedded in the front end cover 210.
  • the other end of the buckle 331 is provided with a hook 332.
  • the hook 332 is engaged with the front cover 110 of the oil pump assembly 100, and the hook 332 is axially facing the front cover. Plate 110 is limited. At least a portion of the hook 332 may coincide with at least a portion of the front cover 110 in an axial movement path of the oil pump assembly 100.
  • the front cover 110 may be provided with a latching slot 111.
  • the latching slot 111 may be annular (circular, square, or other shape), or the latching slot 111 may be The gap in the embodiment shown in Fig. 41.
  • the buckle 331 extends through the engaging groove 111, and the buckle 331 is loosely engaged with the engaging groove 111.
  • the oil pump assembly 100 can float in the radial direction, that is, there is a certain amount of movement in the radial direction, and the motor shaft of the motor assembly 200
  • the oil pump shaft 130 of the oil pump assembly 100 can be adaptively centered, effectively avoiding noise caused by the distraction of the motor shaft 250, the coupling 410, and the oil pump shaft 130.
  • the end surface of the hook 332 facing the front end cover 210 is clearance-fitted with the front cover 110 of the oil pump assembly 100 such that the oil pump assembly 100 has a slight floating amount in the axial direction, and the oil pump assembly 100 is not stuck in the axial direction, and does not hinder
  • the oil pump assembly 100 is radially floating, and since the installation pressure between the oil pump assembly 100 and the motor assembly 200 is small, the working friction of the oil pump assembly 100 can be reduced, the working energy efficiency of the oil pump assembly 100 can be improved, and the mechanical efficiency of the oil pump assembly 100 can be improved. high.
  • the rim of the front cover 110 has a lug 112 protruding outward in the radial direction.
  • the engaging groove 111 is disposed on the lug 112.
  • the engaging groove 111 may be a closed ring on the lug 112 or may be in the lug 112.
  • a slit is formed to form an end surface of the hook 332 facing the front end cover 210 opposite to a surface of the lug 112 facing away from the front end cover 210.
  • the hook 332 has a guiding surface 333, and the guiding surface 333 is along the radial direction of the front cover 110.
  • the inner and outer sides are inclined away from the front end cover 210, and the guide surface 333 may be a sloped surface.
  • the edge of the engaging groove 111 facing the front end cover 210 acts on the guiding surface 333 on the hook 332, and the buckle 331 is elastically deformed and bent outward, and the engaging groove 111 is crossed. After the barbs of the buckles 331 are rebounded, the buckles 331 are rebounded, and the front cover 110 of the oil pump assembly 100 is restrained by the hooks 332.
  • the oil pump assembly 100 is relatively fixed, and the buckles 331 and the snap grooves 111 are in a clearance fit.
  • the oil pump assembly 100 has a certain amount of movement space in the radial direction and the axial direction, and the oil pump assembly 100 can have a certain amount of movement in the radial direction and the axial direction under a certain external force.
  • the buckle 331 may be plural, and the plurality of lugs 112 are also plural.
  • the plurality of lugs 112 are circumferentially spaced apart, and the plurality of buckles 331 are circumferentially spaced apart, preferably convex.
  • the ears 112 may be evenly spaced apart in the circumferential direction, and the plurality of buckles 331 and the plurality of lugs 112 are in one-to-one correspondence.
  • the pre-mounting force of the oil pump assembly 100 in each direction in the circumferential direction is relatively uniform, and the oil pump assembly 100 is uniformly aligned when floating in the axial direction, and the constraints received in the respective directions are relatively balanced when floating in the radial direction.
  • an electric oil pump assembly 1000 includes a motor assembly 200 and an oil pump assembly 100.
  • the oil pump assembly 100 is coupled to the motor shaft 250 for driving the motor pump assembly 100.
  • the motor shaft 250 of the motor assembly 200 can be coupled to the oil pump shaft 130 of the oil pump assembly 100 via the coupling 410.
  • the motor assembly 200 is not limited to directly driving the oil pump assembly 100, and may be coupled to the oil pump assembly 100 through a transmission mechanism such as a gearbox or a speed reducer.
  • the oil pump assembly 100 operates under the drive of the motor assembly 200 to convert low pressure oil into a high pressure oil output.
  • the oil pump assembly 100 can be in a variety of configurations.
  • the oil pump assembly 100 can be an external gear pump, a cycloid gear pump, a vane pump or
  • the motor assembly 200 may be various types of motors such as a synchronous motor and an asynchronous motor.
  • the oil pump assembly 100 is mounted at the end of the motor assembly 200, the oil pump assembly 100 can be mounted on the front end cover 210 of the motor assembly 200, the oil pump assembly 100 can be mounted directly on the front end cover 210, or the oil pump assembly 100 can pass other mounting structures (oil pump)
  • the assembly 100 can be indirectly mounted on the front end cover 210 by a support plate member.
  • the front cover plate 110 of the oil pump assembly 100 can be supported on the front end cover 210 of the motor assembly 200, wherein the front cover plate 110 is the power of the oil pump assembly 100.
  • the electric oil pump assembly 1000 has a total oil inlet port 1010 and a total oil outlet port 1020.
  • the oil enters the electric oil pump assembly 1000 from the total oil inlet port 1010 and flows out from the total oil outlet port 1020.
  • the oil pump assembly 100 has an oil suction port and an oil discharge port, and low pressure (normal pressure) oil is sucked into the cavity of the oil pump assembly 100 from the oil suction port, and is converted into high pressure oil to be discharged from the oil discharge port.
  • the motor assembly 200 has an oil pump chamber 1030.
  • the motor assembly 200 includes a front end cover 210.
  • the front end cover 210 can be used to define an oil pump chamber 1030.
  • the oil pump chamber 1030 is filled with oil.
  • the oil pump chamber 1030 is not limited only by the front end cover 210.
  • the cover 210 may define only a portion of the wall surface of the oil pump chamber 1030.
  • the oil pump assembly 100 is fixedly coupled to the motor assembly 200.
  • the oil pump assembly 100 can be fixedly coupled to the front end cover 210 of the motor assembly 200.
  • the oil pump assembly 100 is located in the oil pump chamber 1030.
  • the oil suction port of the oil pump assembly 100 communicates with the total oil inlet port 1010.
  • the oil pump assembly The oil discharge port of 100 is in communication with the total oil outlet 1020.
  • the periphery of the oil pump assembly 100 is surrounded by oil, and the vibration noise of the oil pump assembly 100 can be absorbed by the oil in the oil pump chamber 1030 and reflected by the wall surface of the oil pump chamber 1030 to reduce the electric oil pump assembly 1000.
  • Working noise can be absorbed by the oil in the oil pump chamber 1030 and reflected by the wall surface of the oil pump chamber 1030 to reduce the electric oil pump assembly 1000.
  • the motor assembly 200 may further have a liquid cooling chamber 260.
  • the liquid cooling chamber 260 is in communication with the total oil inlet port 1010, and the liquid cooling chamber 260 may be The vacant space in the compartment of the motor assembly 200, the oil flows into the liquid cooling chamber 260 through the total oil inlet 1010, and the oil is filled in the liquid cooling chamber 260, which corresponds to the internal components of the motor assembly 200 (stator 241, rotor 242, etc.) Soaked in oil.
  • the liquid cooling chamber 260 is filled with flowing oil, and the internal components of the motor assembly 200 are immersed in the oil, and the stator 241 and the rotor 242 can be in full contact with the oil. Since the heat capacity of the oil is large, the stator 241 and the stator 241 can be avoided. The local high temperature of the rotor 242 due to load fluctuations, the flowing oil simultaneously provides heat dissipation and lubrication for the moving parts, ensuring stable operation of the motor assembly 200, and reducing operating noise.
  • the rotor 242 of the motor assembly 200 can be immersed in the oil (low pressure oil), so that the oil can act to delay the rotation of the rotor 242 to buffer the sudden acceleration or sudden deceleration of the rotor 242 and the excessive inertia modulus.
  • the electric oil pump assembly 1000 is used in the steering system 1, the impact on the steering oil passage when the motor assembly 200 is thrown off can be prevented, the steering feel is better, and the steering wheel is not easily shaken.
  • the oil suction port of the oil pump assembly 100 is in communication with the liquid cooling chamber 260, and the oil discharge port of the oil pump assembly 100 is in communication with the total oil outlet port 1020.
  • the flow path of the oil is: the total oil inlet 1010 - the liquid cooling chamber 260 - the oil suction port of the oil pump assembly 100 - the oil discharge port of the oil pump assembly 100 - the total oil outlet 1020, so that the low pressure oil can be converted It is a high-pressure oil, and the circulating fluid can take away the heat of the motor assembly 200 to ensure stable operation of the motor assembly 200.
  • the motor assembly 200 does not need to separately provide a heat-dissipating unit, and can reduce the volume and weight of the electric oil pump assembly 1000, and circulates the flow.
  • the formation is simple and easy to manufacture.
  • the oil suction of the oil pump assembly 100 and the heat dissipation of the motor assembly 200 are achieved by providing a liquid cooling chamber 260 in communication with the oil pump assembly 100, which helps to improve the heat dissipation performance and operational stability of the electric oil pump assembly 1000.
  • the integration level is high and the level of light weight is high.
  • the oil pump assembly 100 and the front end cover 210 may be fixedly coupled by a threaded connection 341.
  • the rim of the front cover 110 of the oil pump assembly 100 has a lug 112 that projects radially outwardly, and the threaded connection 341 extends through the lug 112 and is threadedly coupled to the front end cap 210.
  • connection of the oil pump assembly 100 to the motor assembly 200 is firm and convenient, and the frictional force of the bolt tightening can stably transmit the torque.
  • the plurality of lugs 112 are circumferentially spaced apart, and a plurality of bolts are circumferentially spaced apart.
  • the lugs 112 may be along The circumferential direction is evenly spaced apart, and a plurality of bolts and a plurality of lugs 112 are in one-to-one correspondence.
  • the mounting force of the oil pump assembly 100 in all directions in the circumferential direction is relatively balanced, and the torque transmission is also more stable.
  • the oil pump assembly 100 and the front end cover 210 can be positioned by a positioning structure (not shown).
  • the positioning structure is used to ensure the coaxiality of the oil pump shaft 130 of the oil pump assembly 100 with the motor shaft 250 of the motor assembly 200.
  • the positioning structure may be a positioning pin, and the two ends of the positioning pin respectively extend into the front cover 110 of the oil pump assembly 100 and the positioning groove on the front end cover 210.
  • the positioning structure may be a positioning boss protruding from the front end cover 210.
  • the front cover 110 of the oil pump assembly 100 is provided with a positioning groove, and the positioning boss extends into the positioning boss to realize the oil pump. Positioning of assembly 100.
  • the positioning structure may be a positioning boss protruding from the front cover 110 of the oil pump assembly 100.
  • the front end cover 210 of the motor assembly 200 may be provided with a positioning groove, and the positioning boss extends into the positioning. The bosses are positioned to achieve the positioning of the oil pump assembly 100.
  • first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, and the seventh embodiment can also be combined with the following features to form a new embodiment.
  • the total oil inlet port 1010 may be disposed on the front end cover 210. Specifically, the total oil inlet port 1010 may be disposed above the front end cover 210, and the total oil inlet port 1010 may be disposed in the entire electric oil pump. At the highest point of the assembly 1000, the residual gas in the electric oil pump assembly 1000 can be smoothly discharged upward as the oil flows in. In some embodiments in which the electric oil pump assembly 1000 has the liquid cooling chamber 260, the total oil inlet 1010 It can be in communication with the circulating oil passage 262.
  • the electric oil pump assembly 1000 can have an oil pump chamber 1030 in which the oil pump assembly 100 is mounted, and the oil pump chamber 1030 is filled with oil.
  • the periphery of the oil pump assembly 100 is surrounded by oil, and the vibration noise of the oil pump assembly 100 can be absorbed by the oil in the oil pump chamber 1030 and reflected by the wall surface of the oil pump chamber 1030 to reduce the operating noise of the electric oil pump assembly 1000.
  • the oil pump chamber 1030 can be formed in various manners, and a separate barrel body can be provided.
  • the barrel body defines an oil pump chamber 1030, and the barrel body is fixedly connected with the front end cover 210 of the motor assembly 200, or a part of the peripheral wall of the oil pump chamber 1030 can be combined with the front end.
  • the cover 210 is integrally formed to reduce the assembly process of the electric oil pump assembly 1000.
  • the front end cover 210 may have an annular boss 213 extending axially away from the motor assembly 200.
  • the annular boss 213 may form a side wall of the oil pump chamber 1030, and a side wall of the oil pump chamber 1030. It may be a barrel shape open at both ends, the side wall of the oil pump chamber 1030 surrounds the oil pump assembly 100, and the front end cover 210 itself is connected to one end of the side wall of the oil pump chamber 1030 to form a bottom wall of the oil pump chamber 1030, and the top wall 1031 of the oil pump chamber 1030
  • the annular boss 213 can be connected by a threaded fastener to close the other end of the oil pump chamber 1030.
  • the oil pump assembly 100 is easy to install.
  • a sealing ring may be interposed between the oil pump assembly 100 and the front end cover 210.
  • the sealing ring may be a rubber ring or the like, and the sealing ring may prevent oil leakage of the oil pump chamber 1030 and the oil pump chamber 1030. Separated from the compartment of the motor assembly 200.
  • the bottom wall and the top wall described herein are not limited to the up and down direction, but the wall surface of the supporting oil pump assembly 100 is the bottom wall from the assembly angle of the oil pump assembly 100, and the wall surface opposite to the bottom wall is The top wall, in the embodiment shown in Figures 1 - 38, the electric oil pump assembly 1000 is transversely disposed, and the motor assembly 200 and the oil pump assembly 100 are both transversely disposed.
  • the left side wall of the oil pump assembly 100 is the bottom wall and the right side.
  • the wall is the top wall.
  • the front end cover 210 and the annular boss 213 may be made of aluminum alloy to reduce the total weight of the electric oil pump assembly 1000.
  • the top wall 1031 of the oil pump chamber 1030 may be a steel piece, so that the oil pump chamber can be required to meet the strength requirement.
  • the top wall 1031 of the 1030 is made thinner, making the axial space of the electric oil pump assembly 1000 more compact.
  • the oil pump chamber 1030 can communicate with the total oil inlet 1010 , and the oil suction port of the oil pump assembly 100 can be coupled to the oil pump chamber 1030 .
  • the front end cover 210 is provided with an oil outlet passage 212.
  • One end of the oil discharge passage 212 is connected to the oil discharge port of the oil pump assembly 100, and the other end of the oil discharge passage 212 forms a total oil outlet port 1020.
  • the annular boss 213 may be provided with an oil pump chamber inlet and an oil pump chamber outlet.
  • the oil enters the oil pump chamber 1030 from the oil pump chamber inlet and flows out from the oil pump chamber outlet to the motor assembly 200.
  • the oil pump assembly 100 is sucked through the oil suction port.
  • the oil pump assembly 100 converts the oil from the low pressure to the high pressure and then discharges from the oil discharge port to the total oil outlet 1020 through the oil outlet passage 212.
  • the flow direction of the oil is: total oil inlet 1010 - oil pump chamber 1030 - liquid cooling chamber 260 - oil suction port of oil pump assembly 100 - oil discharge port of oil pump assembly 100 - oil outlet passage 212 - total oil outlet 1020, so that the low-pressure oil can be converted into high-pressure oil, and the circulating fluid can take away the heat of the motor assembly 200 to ensure the stability of the motor assembly 200.
  • the motor assembly 200 does not have to be separately provided with a heat-dissipating unit, and the electric oil pump assembly can be reduced. 1000 volume and weight.
  • the pressure of the oil pump chamber 1030 is small, which is convenient for sealing, and the wall surface of the oil pump chamber 1030 does not have the function of a high-pressure container, and is not limited by the influence of strength, thereby providing a possibility of lightweight design.
  • the wall surface of the oil pump chamber 1030 may be thinner, and the wall surface of the oil pump chamber 1030 may be made of thin-walled metal to reduce the space and weight of the electric oil pump assembly 1000.
  • the housing of the oil pump assembly 100 is fixedly connected to the motor assembly 200, and can be fixedly connected by the bolt connection described in Embodiment 7.
  • the oil pump chamber 1030 and the oil pump assembly 100 are drained.
  • the port is connected, and the oil pump chamber 1030 is in communication with the total oil outlet 1020.
  • the front end cover 210 may be provided with an oil outlet passage 212. One end of the oil outlet passage 212 is connected to the oil pump chamber 1030, and the other end of the oil outlet passage 212 forms a total oil outlet. 1020.
  • the flow path of the oil is: the total oil inlet 1010 - the oil suction port of the oil pump assembly 100 - the oil discharge port of the oil pump assembly 100 - the oil pump chamber 1030 - the oil outlet passage 212 - the total oil outlet 1020, so that the low pressure oil can be transformed For high pressure oil.
  • the total oil inlet 1010 and the oil suction port may communicate with each other through the liquid cooling chamber 260 and the motor shaft oil passage 251.
  • the total oil inlet 1010 and the oil absorption can be connected by a liquid cooling chamber 260.
  • the total oil inlet 1010 and the oil suction port may communicate with each other through the oil inlet passage 215 on the front end cover 210.
  • the oil pump chamber 1030 can function to eliminate oil pulsation and perform fluid silence. By designing the size of the oil pump chamber 1030, various frequency noise can be eliminated.
  • the high pressure oil of the oil pump chamber 1030 can apply an axial thrust P to the oil pump assembly 100, and the pressure P applied by the high pressure oil to the rear cover 120 of the oil pump assembly 100 can support the oil pump assembly 100 at the front end of the motor assembly 200.
  • the oil pump assembly 100 can be subjected to additional axial forces during operation, and the oil pump assembly 100 can remain relatively stable and fixed during operation.
  • the oil pump chamber 1030 is in communication with the oil discharge port of the oil pump assembly 100.
  • the electric oil pump assembly 1000 may further include: a soundproof cover 510, the soundproof cover 510 may be disposed outside the outer wall surface of the oil pump chamber 1030, and the soundproof cover 510 is covered in the oil pump chamber 1030.
  • the outer wall is out-of-plane to further isolate the operating noise of the oil pump assembly 100.
  • the soundproof cover 510 can be made of a soundproof material, and can selectively select a soundproof material of a corresponding spectrum according to the spectral characteristics of the noise to reduce noise.
  • the soundproof cover 510 can be made of a nylon piece or a metal nylon composite material.
  • the metal nylon composite material is a composite material with a metal mesh added to the nylon substrate.
  • the inner surface of the metal nylon composite material is smooth and intermediately porous, which helps to reflect and absorb noise, and the pore size and ratio can be selected according to the spectral characteristics.
  • the electric oil pump assembly 1000 can further include a low pressure cover 520 that can be disposed outside the wall surface of the oil pump chamber 1030 and that defines communication with the total oil inlet 1010.
  • the low pressure chamber 1040, the low pressure cover 520 is connected to the front end cover 210, and the low pressure cover 520 can be coupled to the front end cover 210.
  • the low pressure chamber 1040 may be filled with low pressure oil to further absorb the working noise of the oil pump assembly 100.
  • the total inlet port 1010 may be directly connected to the low pressure chamber 1040, and the liquid in the liquid cooling chamber 260 or the oil inlet passage 215 may pass through the low pressure.
  • the cavity 1040 is connected to the total oil inlet 1010.
  • the low-pressure cover 520 can be made of a material having a smooth inner surface and a hole in the middle, so that the low-pressure cover 520 has a strong reflection ability against noise and a good absorption effect.
  • the low pressure cover 520 can be a plastic part or a metal nylon composite material, and the metal nylon composite material is a composite material in which a metal mesh is added to the nylon substrate.
  • the low pressure cover 520 may have a tapered peripheral wall, and the low pressure cover 520 is laterally mounted, and the inner diameter of the low pressure cover 520 is gradually reduced from the total inlet port 1010 to the direction away from the total inlet port 1010, so that the residual gas in the low pressure chamber 1040 can be The flow along the tapered surface is discharged to the total oil inlet 1010, and the residual gas in the low pressure cover 520 can be completely discharged when the electric oil pump assembly 1000 is operated.
  • motor assembly 200 and oil pump assembly 100 are transverse. This can eliminate the influence of the own weight of the oil pump assembly 100 on the assembly pressure between the oil pump assembly 100 and the motor assembly 200, and the height of the electric oil pump assembly 1000 is small to facilitate placement on the vehicle.
  • the oil pump shaft 130 of the oil pump assembly 100 and the motor shaft 250 of the motor assembly 200 can be coupled by a coupling 410 for transmitting torque, that is, the motor shaft 250 can be coupled.
  • the shaft 410 drives the oil pump shaft 130 to rotate.
  • the coupling 410 has various structural forms, a slider coupling, a hinge coupling, a gear coupling and the like.
  • the coupling 410 has a coupling hole 411
  • the motor shaft 250 has a first key
  • the oil pump shaft 130 has a second key.
  • the first key cooperates with the coupling hole 411
  • the second The key is engaged with the coupling hole 411, and the first key and the second key have a coincident section in the axial direction.
  • the coupling hole 411 may include two portions that are offset from each other to cooperate with the motor shaft 250 and the oil pump shaft 130 respectively.
  • the length of the motor shaft 250, the coupling 410, and the oil pump shaft 130 is smaller than the motor shaft 250 and The sum of the lengths of the oil pump shafts 130 such that the axial length of the coupling 410 is short, and the axial length of the coupling 410 can be shortened by half, so that the axial space of the electric oil pump assembly 1000 is more compact.
  • the coupling hole 411 may be a "ten" shaped hole penetrating through the coupling 410, and the coupling 410 may be cylindrical, and the coupling hole 411 may be axially opened in the middle of the coupling 410.
  • the first key and the second key may both be in a "one" shape, where the "one" shape includes a continuous strip shape, and also includes a discontinuous strip shape, and the middle portion of at least one of the first key and the second key has Avoid the slot.
  • the first key and the second key can achieve axial overlap without interference, and torque is transmitted from the side of the first key of the motor shaft 250 to the coupling 410, which in turn transmits torque to the oil pump shaft 130.
  • the side of the two keys Since the torsional shear force of the motor shaft 250 or the oil pump shaft 130 when transmitting torque is reduced from the shaft surface to the center gradient and is zero at the center, the influence of the groove on the center of the key is small in the middle of the key.
  • the key When the key is selected to open the escape groove, it can be selected according to the diameter of the shaft. If the diameter of the oil pump shaft 130 is smaller than the diameter of the motor shaft 250, the middle of the first key has a relief groove; if the diameter of the oil pump shaft 130 is larger than the motor shaft The diameter of 250 has a relief groove in the middle of the second button. In this way, the influence of the opening of the escape groove on the strength of the shaft can be further reduced.
  • the middle of the first key and the second key may be respectively provided with a relief groove to prevent the motor shaft 250 or the oil pump shaft 130 from directly contacting.
  • the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, including but not limited to various mountings of the oil pump assembly 100 (including The elastic member 311 is floatingly mounted, floatingly mounted by the buckle 331 , floatingly mounted by the magnetic member 321 , fixedly mounted by the screw connection 341 , and various cooling methods or oil delivery modes of the motor assembly 200 (including passing through the motor shaft oil passage 251 )
  • the oil delivery, oil delivery through the liquid cooling chamber 260, isolation cooling can be combined with one another to obtain a new embodiment.
  • Fig. 1, Fig. 19, Fig. 29 can be obtained by combining the features of the first embodiment and the fourth embodiment.
  • Fig. 4 The embodiment shown in Fig. 4, Fig. 5, Fig. 21, Fig. 22, Fig. 31, Fig. 32 can be obtained by combining the features of the first embodiment and the fifth embodiment.
  • Fig. 13, Fig. 14, Fig. 26, Fig. 27, Fig. 36, Fig. 37 can be obtained by combining the features of the first embodiment and the seventh embodiment.
  • FIGs. 2, 20, and 30 can be obtained by combining the features of the second embodiment and the fourth embodiment.
  • Fig. 6, Fig. 7, Fig. 23, Fig. 33 can be obtained by combining the features of the second embodiment and the fifth embodiment.
  • FIGs. 17 and 18 can be obtained by combining the features of the third embodiment and the seventh embodiment.
  • the present disclosure also discloses a steering system 1.
  • the steering system 1 of the embodiment of the present disclosure has the electric oil pump assembly 1000 described in any of the above embodiments, and the oil output from the electric oil pump assembly 1000 can be Steering is achieved by driving the transverse rod displacement of the piston push rod of the steering power cylinder.
  • the steering system 1 of the embodiment of the present disclosure has a compact structure, good steering maneuverability, and good work stability.
  • the present disclosure also discloses a lubrication system 2, as shown in FIG. 44, the lubrication system 2 of the embodiment of the present disclosure has the electric oil pump assembly 1000 described in any of the above embodiments, and the electric oil pump assembly 1000 can apply lubricating oil The pumping is carried out in a system requiring lubrication, so that the lubrication system 2 of the embodiment of the present disclosure has a compact structure and good work stability.

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Abstract

一种电动油泵总成(1000)、转向系统和润滑系统,电动油泵总成(1000)具有总进油口(1010)和总出油口(1020),还包括:电机组件(200),电机组件(200)具有与总进油口(1010)连通的液冷腔(260),该液冷腔(260)包括循环油道(262),该循环油道(262)位于电机组件(200)的定子(241)与电机组件(200)的电机壳(220)之间;油泵组件(100),油泵组件(100)安装在电机组件(200)的端部,且与电机组件(200)的电机轴(250)动力耦合连接,油泵组件(100)的吸油口与电机组件(200)的电机轴油道(251)连通,油泵组件(100)的吸油口与循环油道(262)连通,排油口与总出油口(1020)连通。

Description

电动油泵总成、转向系统和润滑系统
本申请要求于2017年06月26日提交中国专利局、申请号为201710495917.7、发明名称为“电动油泵总成、转向系统和润滑系统”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本公开属于车辆制造技术领域,具体而言,涉及一种电动油泵总成、具有该电动油泵总成的转向系统和具有该电动油泵总成的润滑系统。
背景技术
电动油泵广泛应用于车辆的转向系统和润滑系统中,相关技术中,电动油泵的油泵与电机为分体式,其连接关系仅仅为油泵轴与电机轴的动力耦合连接,使得电动油泵的体积较大,占用的安装空间大。另外,电机的工作噪音以及油泵的工作噪音较大,相关技术中往往通过设置各种阻尼元件来隔离噪音,阻尼元件的构造复杂,占用较大的安装空间,且生产成本高,装配工艺复杂,存在改进空间。
发明内容
本公开旨在至少解决现有技术中存在的技术问题之一。为此,本公开提出一种电动油泵总成,所述电动油泵总成的散热性能和工作稳定性号。
根据本公开实施例的电动油泵总成,所述电动油泵总成具有总进油口和总出油口,且包括:电机组件,所述电机组件具有与所述总进油口连通的液冷腔,所述液冷腔包括循环油道,所述循环油道位于所述电机组件的定子与所述电机组件的电机壳之间;油泵组件,所述油泵组件安装在所述电机组件的端部,且与所述电机组件的电机轴动力耦合连接,所述油泵组件的吸油口与所述循环油道连通,所述油泵组件的排油口与所述总出油口连通。
根据本公开实施例的电动油泵总成,通过设置循环油道来实现油泵组件的吸油和电机组件的散热,有助于提升电动油泵总成的散热性能和工作稳定性,且集成度高,轻量化水平高。
根据本公开一个实施例的电动油泵总成,所述电机组件还包括:后端盖,所述后端盖封闭所述电机壳的后端以形成所述液冷腔的后腔体,所述循环油道为多个且沿周向间隔开设置,多个所述循环油道通过所述后腔体连通。
根据本公开一个实施例的电动油泵总成,多个所述循环油道中的至少一个的油液从后 向前流动并与所述吸油口相连。
根据本公开一个实施例的电动油泵总成,多个所述循环油道中的一部分所述循环油道中的油液从后向前流动,另一部分所述循环油道中的油液从前向后流动,且油液流动方向不同的两种所述循环油道沿周向交错布置。
根据本公开一个实施例的电动油泵总成,多个所述循环油道中的一个与所述总进油口相连以使油液通过多个所述循环油道中的所述一个流入所述液冷腔。
根据本公开一个实施例的电动油泵总成,所述油泵组件安装在所述电机组件的前端盖上,所述定子与所述前端盖之间设有挡油圈。
根据本公开一个实施例的电动油泵总成,所述循环油道沿轴向延伸。
根据本公开一个实施例的电动油泵总成,所述油泵组件安装在所述电机组件的前端盖上,所述前端盖设有连通所述循环油道与所述吸油口的过油道。
根据本公开一个实施例的电动油泵总成,所述前端盖具有沿轴向向所述电机组件的转子凸出的支撑凸缘,所述支撑凸缘用于支撑所述电机组件的轴承,所述支撑凸缘、所述电机轴、所述电机组件的轴承共同限定出与所述吸油口相连的吸油腔,所述过油道贯穿所述支撑凸缘以连通所述吸油腔与所述循环油道。
根据本公开一个实施例的电动油泵总成,所述油泵组件安装在所述电机组件的前端盖上,所述总进油口设在所述前端盖上,且与所述循环油道连通。
根据本公开一个实施例的电动油泵总成,所述总进油口设在所述前端盖的上方。
根据本公开一个实施例的电动油泵总成,具有:油泵腔,所述油泵组件安装在所述电机组件的前端盖上,且所述油泵组件安装在所述油泵腔内,所述油泵腔内填充有油液。
根据本公开一个实施例的电动油泵总成,所述油泵腔与所述总进油口连通,所述吸油口与所述油泵腔相连。
根据本公开一个实施例的电动油泵总成,所述前端盖设有出油通道,所述出油通道的一端与所述油泵组件的排油口相连,另一端形成所述总出油口。
根据本公开一个实施例的电动油泵总成,所述油泵腔与所述油泵组件的排油口相连且与所述总出油口连通。
根据本公开一个实施例的电动油泵总成,所述前端盖设有出油通道,所述出油通道的一端与所述油泵腔相连,另一端形成所述总出油口。
根据本公开一个实施例的电动油泵总成,所述油泵组件浮动支撑在所述前端盖上。
根据本公开一个实施例的电动油泵总成,还包括:弹性件和定位件,所述定位件穿过所述油泵组件和所述前端盖,且与所述油泵组件间隙配合,所述弹性件与所述油泵组件接触以向所述油泵组件施加朝向所述电机组件的轴向预紧力。
根据本公开一个实施例的电动油泵总成,所述定位件为螺栓,所述油泵组件的外周设有凸耳,所述凸耳上设有定位孔,所述螺栓贯穿所述定位孔且与所述前端盖螺纹连接,所述弹性件为弹簧且套设在所述螺栓外,所述弹簧弹性止抵在所述凸耳与所述螺栓的头部之间。
根据本公开一个实施例的电动油泵总成,还包括:磁性件,所述磁性件安装在所述前端盖上,所述油泵组件的前盖板为铁磁性材料制成。
根据本公开一个实施例的电动油泵总成,所述前盖板上设有凹槽,所述磁性件的至少部分凸出于所述前端盖且伸入所述凹槽,并与所述凹槽间隙配合。
根据本公开一个实施例的电动油泵总成,所述油泵组件与所述前端盖之间通过定位单元预定位,且所述定位单元与所述油泵组件和所述前端盖中的至少一个沿径向间隙配合,所述油泵组件的后盖板和所述油泵腔的顶壁分别设有磁极方向相反的磁性件。
根据本公开一个实施例的电动油泵总成,还包括:卡扣,所述卡扣连接在所述油泵组件与所述前端盖之间,且与所述前端盖间隙配合。
根据本公开一个实施例的电动油泵总成,所述卡扣的一端与所述前端盖固定连接,另一端设有与所述油泵组件的前盖板卡接的卡钩,且所述卡钩在轴向上对所述前盖板限位。
根据本公开一个实施例的电动油泵总成,所述前盖板上设有卡接槽,所述卡扣贯穿所述卡接槽且与所述卡接槽间隙配合,所述卡钩的朝向所述前端盖的端面与所述前盖板间隙配合。
根据本公开一个实施例的电动油泵总成,所述卡钩具有导向面,所述导向面沿所述前盖板的径向从内向外向远离所述前端盖的方向倾斜。
根据本公开一个实施例的电动油泵总成,所述前端盖具有沿轴向向远离所述电机组件的方向延伸的环形凸台,所述环形凸台形成所述油泵腔的侧壁,所述油泵腔的顶壁与所述环形凸台通过螺纹紧固件相连。
根据本公开一个实施例的电动油泵总成,还包括:隔音罩,所述隔音罩罩设在所述油泵腔的外壁面外。
根据本公开一个实施例的电动油泵总成,还包括:低压罩,所述低压罩罩设在所述油泵腔的壁面外且限定出与所述总进油口连通的低压腔,所述低压罩与所述前端盖相连。
根据本公开一个实施例的电动油泵总成,所述低压罩具有锥形周壁,且所述低压罩的内径从靠近所述总进油口到远离所述总进油口的方向逐渐变小。
根据本公开一个实施例的电动油泵总成,所述油泵组件与所述前端盖之间夹设有密封圈。
根据本公开一个实施例的电动油泵总成,所述电机组件和所述油泵组件横置。
本公开还提出了一种转向系统,具有如上述任一种所述的电动油泵总成。
所述转向系统与上述的电动油泵总成相对于现有技术所具有的优势相同,在此不再赘述。
本公开还提出了一种润滑系统,具有如上述任一种所述的电动油泵总成。
所述润滑系统与上述的电动油泵总成相对于现有技术所具有的优势相同,在此不再赘述。
本公开的附加方面和优点将在下面的描述中部分给出,部分将从下面的描述中变得明显,或通过本公开的实践了解到。
附图说明
图1-图38是根据本公开一些实施例的电动油泵总成的结构示意图;
图39是图1、3、4、5、8、9、10、12、13、14、17、18、19、21、22、24、26、27、29、31、32、34、36、37所示的实施例中的电机组件的横截面示意图;
图40是图2、6、7、11、15、16、20、23、25、28、30、33、35、38所示的实施例中的电机组件的横截面示意图;
图41是图10、11、12、24、25、34、35所示的实施例的油泵组件的装配示意图;
图42是根据本公开实施例的联轴器的结构示意图;
图43是根据本公开实施例的转向系统的结构示意图;
图44是根据本公开实施例的润滑系统的结构示意图。
附图标记:
转向系统1,润滑系统2,电动油泵总成1000,总进油口1010,总出油口1020,油泵腔1030,油泵腔的顶壁1031,低压腔1040;油泵组件100,前盖板110,卡接槽111,凸耳112,后盖板120,油泵轴130;电机组件200,前端盖210,支撑凸缘211,出油通道212,环形凸台213,过油道214,进油通道215,电机壳220,后端盖230,支撑座231,定子241,转子242,电机轴250,电机轴油道251,供油孔252,液冷腔260,后腔体261,循环油道262,吸油腔263,挡油圈271;弹性件311,定位件312,磁性件321,定位单元322,卡扣331,卡钩332,导向面333,螺纹连接件341;联轴器410,联接孔411,隔音罩510,低压罩520。
具体实施方式
下面详细描述本公开的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描 述的实施例是示例性的,仅用于解释本公开,而不能理解为对本公开的限制。
在本公开的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本公开中的具体含义。
在一些实施例中,电动油泵总成具有总进油口和总出油口,且包括:电机组件,电机组件具有与总进油口连通的液冷腔,液冷腔包括循环油道,循环油道位于电机组件的定子与电机组件的电机壳之间;油泵组件,油泵组件安装在电机组件的端部,且与电机组件的电机轴动力耦合连接,油泵组件的吸油口与循环油道连通,油泵组件的排油口与总出油口连通。
根据本公开实施例的电动油泵总成,通过设置循环油道来实现油泵组件的吸油和电机组件的散热,有助于提升电动油泵总成的散热性能和工作稳定性,且集成度高,轻量化水平高。
在一些实施例中,电机组件还包括:后端盖,后端盖封闭电机壳的后端以形成液冷腔的后腔体,循环油道为多个且沿周向间隔开设置,多个循环油道通过后腔体连通。
在一些实施例中,多个循环油道中的至少一个的油液从后向前流动并与吸油口相连。
在一些实施例中,多个循环油道中的一部分循环油道中的油液从后向前流动,另一部分循环油道中的油液从前向后流动,且油液流动方向不同的两种循环油道沿周向交错布置。
在一些实施例中,多个循环油道中的一个与总进油口相连以使油液通过多个循环油道中的一个流入液冷腔。
在一些实施例中,油泵组件安装在电机组件的前端盖上,定子与前端盖之间设有挡油圈。
在一些实施例中,循环油道沿轴向延伸。
在一些实施例中,油泵组件安装在电机组件的前端盖上,前端盖设有连通循环油道与吸油口的过油道。
在一些实施例中,前端盖具有沿轴向向电机组件的转子凸出的支撑凸缘,支撑凸缘用于支撑电机组件的轴承,支撑凸缘、电机轴、电机组件的轴承共同限定出与吸油口相连的吸油腔,过油道贯穿支撑凸缘以连通吸油腔与循环油道。
在一些实施例中,油泵组件安装在电机组件的前端盖上,总进油口设在前端盖上,且与循环油道连通。
在一些实施例中,总进油口设在前端盖的上方。
在一些实施例中,电动油泵总成具有:油泵腔,油泵组件安装在电机组件的前端盖上, 且油泵组件安装在油泵腔内,油泵腔内填充有油液。
在一些实施例中,油泵腔与总进油口连通,吸油口与油泵腔相连。
在一些实施例中,前端盖设有出油通道,出油通道的一端与油泵组件的排油口相连,另一端形成总出油口。
在一些实施例中,油泵腔与油泵组件的排油口相连且与总出油口连通。
在一些实施例中,前端盖设有出油通道,出油通道的一端与油泵腔相连,另一端形成总出油口。
在一些实施例中,油泵组件浮动支撑在前端盖上。
在一些实施例中,电动油泵总成还包括:弹性件和定位件,定位件穿过油泵组件和前端盖,且与油泵组件间隙配合,弹性件与油泵组件接触以向油泵组件施加朝向电机组件的轴向预紧力。
在一些实施例中,定位件为螺栓,油泵组件的外周设有凸耳,凸耳上设有定位孔,螺栓贯穿定位孔且与前端盖螺纹连接,弹性件为弹簧且套设在螺栓外,弹簧弹性止抵在凸耳与螺栓的头部之间。
在一些实施例中,电动油泵总成还包括:磁性件,磁性件安装在前端盖上,油泵组件的前盖板为铁磁性材料制成。
在一些实施例中,前盖板上设有凹槽,磁性件的至少部分凸出于前端盖且伸入凹槽,并与凹槽间隙配合。
在一些实施例中,油泵组件与前端盖之间通过定位单元预定位,且定位单元与油泵组件和前端盖中的至少一个沿径向间隙配合,油泵组件的后盖板和油泵腔的顶壁分别设有磁极方向相反的磁性件。
在一些实施例中,电动油泵总成还包括:卡扣,卡扣连接在油泵组件与前端盖之间,且与前端盖间隙配合。
在一些实施例中,卡扣的一端与前端盖固定连接,另一端设有与油泵组件的前盖板卡接的卡钩,且卡钩在轴向上对前盖板限位。
在一些实施例中,前盖板上设有卡接槽,卡扣贯穿卡接槽且与卡接槽间隙配合,卡钩的朝向前端盖的端面与前盖板间隙配合。
在一些实施例中,卡钩具有导向面,导向面沿前盖板的径向从内向外向远离前端盖的方向倾斜。
在一些实施例中,前端盖具有沿轴向向远离电机组件的方向延伸的环形凸台,环形凸台形成油泵腔的侧壁,油泵腔的顶壁与环形凸台通过螺纹紧固件相连。
在一些实施例中,电动油泵总成还包括:隔音罩,隔音罩罩设在油泵腔的外壁面外。
在一些实施例中,电动油泵总成还包括:低压罩,低压罩罩设在油泵腔的壁面外且限定出与总进油口连通的低压腔,低压罩与前端盖相连。
在一些实施例中,低压罩具有锥形周壁,且低压罩的内径从靠近总进油口到远离总进油口的方向逐渐变小。
在一些实施例中,油泵组件与前端盖之间夹设有密封圈。
在一些实施例中,电机组件和油泵组件横置。
本公开还提出了一种转向系统,转向系统具有如上述任一种的电动油泵总成。
本公开还提出了一种润滑系统,转向系统具有如上述任一种的电动油泵总成。
首先参考图1-图42描述在一些实施例中的电动油泵总成1000。
实施例一
如图1、图4、图5、图10、图13、图14、图19、图21、图22、图24、图26、图27、图29、图31、图32、图34、图36、图37、图39所示,根据本公开一个实施例的电动油泵总成1000包括:电机组件200和油泵组件100。
其中,油泵组件100与电机轴250动力耦合连接,电机组件200用于提供油泵组件100运转的驱动力,电机组件200的电机轴250可以通过联轴器410与油泵组件100的油泵轴130相连,当然,电机组件200不限于直接驱动油泵组件100,还可以通过变速箱或减速器等传动机构与油泵组件100连接。
油泵组件100在电机组件200的驱动下工作,以将低压油转变为高压油输出,油泵组件100可以为多种结构形式,油泵组件100可以为外啮合齿轮泵、摆线齿轮泵、叶片泵或柱塞泵等,电机组件200可以是同步电机、异步电机等各种类型的电机。
油泵组件100安装在电机组件200的端部,油泵组件100可以安装在电机组件200的前端盖210上,油泵组件100可以直接安装在前端盖210上,或者油泵组件100可以通过其他安装结构(油泵组件100可以通过支撑板件)间接安装在前端盖210上,具体地,油泵组件100的前盖板110可以支撑在电机组件200的前端盖210上,其中前盖板110为油泵组件100的动力输入端的盖板,即油泵轴130从前盖板110伸出,对应地,后盖板120为油泵组件100的另一端的盖板。
电动油泵总成1000具有总进油口1010和总出油口1020,油液从总进油口1010进入电动油泵总成1000,并从总出油口1020流出。油泵组件100具有吸油口和排油口,低压(常压)油从吸油口吸入油泵组件100的腔体内,并转变为高压油从排油口排出。
电机组件200的电机轴250内设有电机轴油道251,电机轴油道251可以沿电机轴250的轴向延伸,电机轴油道251与总进油口1010连通,油泵组件100的吸油口与电机轴油道251连通,油泵组件100的排油口与总出油口1020连通。
也就是说,油液的流动路径为:总进油口1010-电机轴油道251-油泵组件100的吸油口-油泵组件100的排油口-总出油口1020,这样即可将低压油转变为高压油,且循环流动的油液可以通过电机轴250带走电机组件200的热量,保证电机组件200工作稳定,电机组件200不必单独设置散热单元,可以缩小电动油泵总成1000的体积和重量。
在一些实施例中1000,通过设置电机轴油道251来实现油泵组件100的吸油,有助于提升电动油泵总成1000的散热性能和工作稳定性,且集成度高,轻量化水平高。
根据本公开一个优选实施例的电动油泵总成1000,如图1、图4、图5、图10、图13、图14、图19、图21、图22、图24、图26、图27、图29、图31、图32、图34、图36、图37、图39所示,电机组件200可以包括:前端盖210、电机壳220、后端盖230、定子241和转子242。
前端盖210安装在电机壳220的前端,前端盖210可以通过螺纹紧固件与电机壳220的前端相连,后端盖230封闭电机壳220的后端,后端盖230可以通过螺纹紧固件与电机壳220的后端相连,需要说明的是,前端表示电机组件200的输出端(图1-图38中的右端),后端表示轴向上远离输出端的一端(图1-图38中的左端)。
电机组件200可以具有液冷腔260,液冷腔260可以与总进油口1010连通,且电机轴油道251通过液冷腔260与总进油口1010连通。
可以理解的是,液冷腔260可以为电机组件200的舱室内的空余空间,油液的流动路径为:总进油口1010-液冷腔260-电机轴油道251-油泵组件100的吸油口-油泵组件100的排油口-总出油口1020。
电机组件200的舱室内充满了流动的油液,电机组件200内部的零部件浸泡在油液中,定子241和转子242可以与油液充分接触,由于油液的热容量较大,可以避免定子241和转子242因负载波动而产生的局部高温,流动的油液同时为运动件提供散热和润滑,保证电机组件200工作稳定,且可以降低工作噪音。
电机组件200的转子242可以浸没在油液(低压油)内,这样油液可以起到迟滞转子242转动的作用,以缓冲转子242的急加速或急减速及惯性模量过大的问题,当电动油泵总成1000用于转向系统1时,可以防止电机组件200抛载时对转向油路的冲击,转向的手感更佳,方向盘不易抖动。
液冷腔260包括循环油道262和后腔体261。
其中,循环油道262位于定子241与电机壳220之间,且循环油道262沿电机组件200的轴向延伸,如图39所示,循环油道262可以为多个,在图39所示的实施例中循环油道262可以为四个,且多个循环油道262可以沿定子241的周向间隔开布置,这样电机组件200的周向各处散热均匀,循环油道262可以与总进油口1010连通,总进油口1010可以 设在电动油泵总成1000的上部,以在油液流入时,有利于气体排出,总进油口1010可以与最上方的一个循环油道262相连。
后腔体261位于后端盖230与定子241、电机轴250及转子242之间,后腔体261与循环油道262连通,特别是每个循环油道262的后端可以均与后腔体261相连。
电机轴油道251沿轴向延伸,且电机轴油道251在远离油泵组件100的一端敞开,并且电机轴油道251在该端与液冷腔260连通,具体地,电机轴油道251在该端与后腔体261相连,后端盖230可以具有支撑座231,支撑座231用于支撑电机轴250的后端(通过轴承),如图1、图4、图5、图10、图13、图14、图19、图21、图22、图24、图26、图27、图29、图31、图32、图34、图36、图37所示,支撑座231上可以设有过油通道以连通后腔体261与电机轴油道251,这样支撑座231、轴承形成的相对封闭的空间可以防止电机轴油道251吸油引起的液冷腔260内的油液紊流。
电机轴油道251的另一端(靠近油泵组件100的一端)设有沿径向延伸的供油孔252,供油孔252可以与吸油口连通。供油孔252可以为多个,供油孔252可以为四个,多个供油孔252沿周向均匀间隔开设置,以使油液的流动对电机轴250的作用力在径向上各向均衡,由此电机轴油道251内的油液流动对电机轴250的转动无影响。
如图1、图4、图5、图10、图13、图14、图19、图21、图22、图24、图26、图27、图29、图31、图32、图34、图36、图37所示,前端盖210可以具有沿轴向向电机组件200的转子242凸出的支撑凸缘211,支撑凸缘211可以为圆环形,支撑凸缘211用于支撑电机组件200的轴承,支撑凸缘211、电机轴250、电机组件200的轴承共同限定出吸油腔263,吸油腔263与吸油口相连,供油孔252与吸油腔263相连。吸油腔263相当于提供了油泵组件100吸油的缓冲空间,便于油液从孔径相对较小的供油孔252留出。
定子241与前端盖210之间可以设有挡油圈271,挡油圈271可以为耐油性材质制成,挡油圈271可以为油毡等,如图1、图4、图5、图10、图13、图14、图19、图21、图22、图24、图26、图27、图29、图31、图32、图34、图36、图37所示,挡油圈271可以为环形,且挡油圈271可以套设在支撑凸缘211外,定子241的靠近前端盖210的一部分可以套设在挡油圈271外,挡油圈271可以防止油泵组件100直接从附近的腔体内吸油,使得油液在电机组件200内的各处均流动良好,以均衡散热。
当然,定子241与挡油圈271之间可以存在间隙,挡油圈271与转子242之间也存在间隙,但是间隙不影响油液的总体流向。这样,可以保证油液的总体流动路径为:总进油口1010-循环油道262-后腔体261-电机轴油道251-供油孔252-吸油腔263-油泵组件100的吸油口-油泵组件100的排油口-总出油口1020。
实施例二
如图2、图6、图7、图11、图15、图16、图20、图23、图25、图28、图30、图33、图35、图38、图40所示,根据本公开一个实施例的电动油泵总成1000包括:电机组件200和油泵组件100。
其中,油泵组件100与电机轴250动力耦合连接,电机组件200用于提供油泵组件100运转的驱动力,电机组件200的电机轴250可以通过联轴器410与油泵组件100的油泵轴130相连,当然,电机组件200不限于直接驱动油泵组件100,还可以通过变速箱或减速器等传动机构与油泵组件100连接。
油泵组件100在电机组件200的驱动下工作,以将低压油转变为高压油输出,油泵组件100可以为多种结构形式,油泵组件100可以为外啮合齿轮泵、摆线齿轮泵、叶片泵或柱塞泵等,电机组件200可以是同步电机、异步电机等各种类型的电机。
油泵组件100安装在电机组件200的端部,油泵组件100可以安装在电机组件200的前端盖210上,油泵组件100可以直接安装在前端盖210上,或者油泵组件100可以通过其他安装结构(油泵组件100可以通过支撑板件)间接安装在前端盖210上,具体地,油泵组件100的前盖板110可以支撑在电机组件200的前端盖210上,其中前盖板110为油泵组件100的动力输入端的盖板,即油泵轴130从前盖板110伸出,对应地,后盖板120为油泵组件100的另一端的盖板。
电动油泵总成1000具有总进油口1010和总出油口1020,油液从总进油口1010进入电动油泵总成1000,并从总出油口1020流出。油泵组件100具有吸油口和排油口,低压(常压)油从吸油口吸入油泵组件100的腔体内,并转变为高压油从排油口排出。
电机组件200具有液冷腔260,液冷腔260可以与总进油口1010连通,油液通过液冷腔260吸入油泵组件100,液冷腔260可以为电机组件200的舱室内的空余空间,油液通过总进油口1010流入液冷腔260,油液填充在液冷腔260内,相当于电机组件200内部的零部件(定子241、转子242等)浸泡在油液中。
液冷腔260内充满了流动的油液,电机组件200内部的零部件浸泡在油液中,定子241和转子242可以与油液充分接触,由于油液的热容量较大,可以避免定子241和转子242因负载波动而产生的局部高温,流动的油液同时为运动件提供散热和润滑,保证电机组件200工作稳定,且可以降低工作噪音。
电机组件200的转子242可以浸没在油液(低压油)内,这样油液可以起到迟滞转子242转动的作用,以缓冲转子242的急加速或急减速及惯性模量过大的问题,当电动油泵总成1000用于转向系统1时,可以防止电机组件200抛载时对转向油路的冲击,转向的手感更佳,方向盘不易抖动。
液冷腔260包括循环油道262,循环油道262位于电机组件200的定子241与电机组件200的电机壳220之间,可以理解的是,电机壳220与定子241之间的空腔可以形成循环油道262,循环油道262可以沿电机组件200的轴向延伸,油泵组件100的吸油口与循环油道262连通,油泵组件100的排油口与总出油口1020连通。
也就是说,油液的流动路径为:总进油口1010-循环油道262-油泵组件100的吸油口-油泵组件100的排油口-总出油口1020,这样即可将低压油转变为高压油,且循环流动的油液可以带走电机组件200的热量,特别是可以通过定子241带走大量的热量,保证电机组件200工作稳定,电机组件200不必单独设置散热单元,可以缩小电动油泵总成1000的体积和重量,且循环流动的形成简单,易于制造。
在一些实施例中1000,通过设置循环油道262来实现油泵组件100的吸油和电机组件200的散热,有助于提升电动油泵总成1000的散热性能和工作稳定性,且集成度高,轻量化水平高。
根据本公开一个优选实施例的电动油泵总成1000,如图2、图6、图7、图11、图15、图16、图20、图23、图25、图28、图30、图33、图35、图38所示,电机组件200可以包括:前端盖210、电机壳220、后端盖230、定子241和转子242。
前端盖210安装在电机壳220的前端,前端盖210可以通过螺纹紧固件与电机壳220的前端相连,后端盖230封闭电机壳220的后端,后端盖230可以通过螺纹紧固件与电机壳220的后端相连,需要说明的是,前端表示电机组件200的输出端(图1-图38中的右端),后端表示轴向上远离输出端的一端(图1-图38中的左端)。
后端盖230封闭电机壳220的后端以形成液冷腔260的后腔体261,循环油道262可以为多个,在图40所示的实施例中循环油道262可以为四个,且多个循环油道262可以沿周向间隔开设置,多个循环油道262通过后腔体261连通。后腔体261位于后端盖230与定子241、电机轴250及转子242之间,后腔体261与循环油道262连通,特别是每个循环油道262的后端可以均与后腔体261相连。
多个循环油道262的中的至少一个与总进油口1010相连,油液先从总进油口1010流入该循环油道262并流向后腔体261,多个循环油道262中的至少一个循环油道262中的油液从后向前流动并与吸油口相连,即在该循环油道262中的油液从后腔体261向前端盖210的方向流动,进而通过吸油口流入油泵组件100,如图40所示,多个循环油道262中的一部分循环油道262中的油液从后向前流动,另一部分循环油道262中的油液从前向后流动,且油液流动方向不同的两种循环油道262沿周向交错布置。多个循环油道262可以成对设计,油液的流向可以交错设计,油液在电机壳220体内循环流动,以对电机组件200散热。
在一个具体的实施例中,多个循环油道262中的一个(在图40所示的实施例中为最上面的一个循环油道262)与总进油口1010相连以使油液通过多个循环油道262中的一个流入液冷腔260,总进油口1010可以设在电动油泵总成1000的上部,以在油液流入时,有利于气体排出。
如图2、图6、图7、图11、图15、图16、图20、图23、图25、图28、图30、图33、图35、图38所示,前端盖210上可以设有过油道214,循环油道262与吸油口通过过油道214连通。
前端盖210可以具有沿轴向向电机组件200的转子242凸出的支撑凸缘211,支撑凸缘211可以为圆环形,支撑凸缘211用于支撑电机组件200的轴承,支撑凸缘211、电机轴250、电机组件200的轴承共同限定出吸油腔263,吸油腔263与吸油口相连,过油道214可以贯穿支撑凸缘211以连通吸油腔263与循环油道262。吸油腔263相当于提供了油泵组件100吸油的缓冲空间,支撑凸缘211、轴承形成的相对封闭的空间可以防止油泵组件100吸油引起的液冷腔260内的油液紊流。
定子241与前端盖210之间可以设有挡油圈271,挡油圈271可以为耐油性材质制成,挡油圈271可以为油毡等,如图2、图6、图7、图11、图15、图16、图20、图23、图25、图28、图30、图33、图35、图38所示,挡油圈271可以为环形且套设在支撑凸缘211外,定子241的靠近前端盖210的一部分可以套设在挡油圈271外,挡油圈271可以防止油泵组件100直接从附近的腔体内吸油,使得油液在电机组件200内的各处均流动良好,以均衡散热。需要说明的,挡油圈271上与过油道214对应的区域可以挖空,以防止挡油圈271阻碍油泵组件100通过过油道214吸油。
当然,定子241与挡油圈271之间可以存在间隙,挡油圈271与转子242之间也存在间隙,但是间隙不影响油液的总体流向。这样,可以保证油液的总体流动路径为:总进油口1010-循环油道262-后腔体261-循环油道262-过油道214-吸油腔263-油泵组件100的吸油口-油泵组件100的排油口-总出油口1020。
实施例三
如图3、图8、图9、图12、图17、图18所示,根据本公开一个实施例的电动油泵总成1000包括:电机组件200和油泵组件100。
其中,油泵组件100与电机轴250动力耦合连接,电机组件200用于提供油泵组件100运转的驱动力,电机组件200的电机轴250可以通过联轴器410与油泵组件100的油泵轴130相连,当然,电机组件200不限于直接驱动油泵组件100,还可以通过变速箱或减速器等传动机构与油泵组件100连接。
油泵组件100在电机组件200的驱动下工作,以将低压油转变为高压油输出,油泵组件100可以为多种结构形式,油泵组件100可以为外啮合齿轮泵、摆线齿轮泵、叶片泵或柱塞泵等,电机组件200可以是同步电机、异步电机等各种类型的电机。
油泵组件100安装在电机组件200的端部,油泵组件100可以安装在电机组件200的前端盖210上,油泵组件100可以直接安装在前端盖210上,或者油泵组件100可以通过其他安装结构(油泵组件100可以通过支撑板件)间接安装在前端盖210上,具体地,油泵组件100的前盖板110可以支撑在电机组件200的前端盖210上,其中前盖板110为油泵组件100的动力输入端的盖板,即油泵轴130从前盖板110伸出,对应地,后盖板120为油泵组件100的另一端的盖板。
电动油泵总成1000具有总进油口1010和总出油口1020,油液从总进油口1010进入电动油泵总成1000,并从总出油口1020流出。油泵组件100具有吸油口和排油口,低压(常压)油从吸油口吸入油泵组件100的腔体内,并转变为高压油从排油口排出。
电动油泵总成1000的电机组件200具有油泵腔1030,电机组件200的前端盖210限定出油泵腔1030,油泵腔1030不单单由前端盖210限定出,前端盖210可以仅限定油泵腔1030的部分壁面,电机组件200的舱室与油泵腔1030隔断,电机组件200的舱室与油泵腔1030通过电机组件200的前端盖210隔断。电机组件200可以为液冷式(油冷式),电机组件200的冷却油液与油泵组件100的油液分隔开,电机组件200可以具有液冷腔260,液冷腔260与油泵组件100隔离,具体地,液冷腔260与油泵组件100可以通过前端盖210隔离。
油泵组件100位于油泵腔1030内,油泵组件100的吸油口与总进油口1010连通,油泵组件100的排油口与总出油口1020连通,总进油口1010和总出油口1020中的一个与油泵腔1030连通。
这样,油泵组件100的外围被油液包裹,油泵组件100的振动噪音可以被油泵腔1030内的油液吸收以及被油泵腔1030的壁面反射,以降低电动油泵总成1000的工作噪音。
在一些实施例中1000,通过设置相对独立的油泵腔1030,可以有效地吸收油泵组件100的工作噪音,且油泵组件100的泵油不会受到电机组件200内的油液流动的干涉,电动油泵总成1000的泵油效率更高,工作稳定。
根据本公开一个可选实施例的油泵腔1030与总进油口1010连通,如图18所示,油泵组件100的吸油口可以与油泵腔1030相连,油泵腔1030与总进油口1010连通时,油泵组件100的吸油口可以通过油泵腔1030与总进油口1010连通,油泵组件100的排油口与总出油口1020连通。
前端盖210可以设有出油通道212,出油通道212的一端与油泵组件100的排油口相连, 出油通道212的另一端形成总出油口1020,前端盖210还设有进油通道215,总进油口1010和油泵腔1030通过进油通道215连通。
油液的流动路径为:总进油口1010-进油通道215-油泵腔1030-油泵组件100的吸油口-油泵组件100的排油口-出油通道212-总出油口1020,这样即可将低压油转变为高压油,且油泵组件100的外围被低压油包裹,油泵组件100的振动噪音可以被油泵腔1030内的低压油吸收以及被油泵腔1030的壁面反射,以降低电动油泵总成1000的工作噪音。
油泵腔1030的压力小,便于密封,油泵腔1030的壁面不存在高压容器的作用,不必受限于强度的影响,提供了轻量化设计的可能性,油泵腔1030的壁面可以设置的较薄,油泵腔1030的壁面可以由薄壁金属制成,以减小电动油泵总成1000的占用空间及重量。
根据本公开一个可选实施例的油泵腔1030与总进油口1010连通,如图3、图8、图9、图12、图17所示,油泵腔1030与油泵组件100的排油口相连,且油泵腔1030与总出油口1020连通,油泵组件100的排油口可以通过油泵腔1030与总出油口1020连通,油泵组件100的吸油口与总进油口1010连通。
前端盖210设有出油通道212和进油通道215,出油通道212的一端与油泵腔1030相连,出油通道212的另一端形成总出油口1020,进油通道215的一端与总进油口1010连通,进油通道215的另一端与吸油口相连。
油液的流动路径为:总进油口1010-进油通道215-油泵组件100的吸油口-油泵组件100的排油口-油泵腔1030-出油通道212-总出油口1020,这样即可将低压油转变为高压油。
一方面,油泵组件100的外围被高压油包裹,油泵组件100的振动噪音可以被油泵腔1030内的高压油吸收以及被油泵腔1030的壁面反射,以降低电动油泵总成1000的工作噪音。
另一方面,油泵腔1030可以起到消除油液脉动且进行流体消音的作用,通过设计油泵腔1030的尺寸可以实现对各种频率噪音的消除。
再一方面,油泵腔1030的高压油液可以对油泵组件100施加轴向的推力P,高压油对油泵组件100的后盖板120施加的压力可以使油泵组件100支撑在电机组件200的前端盖210上,这样油泵组件100在运行过程中可以受到额外的轴向力,油泵组件100的固定方式约束变少,且油泵组件100在运行过程中可以保持相对稳定和固定。
实施例四
如图1、图2、图3、图19、图20、图29、图30所示,根据本公开一个实施例的电动油泵总成1000包括:电机组件200、油泵组件100和弹性件311。
其中,油泵组件100与电机轴250动力耦合连接,电机组件200用于提供油泵组件100 运转的驱动力,电机组件200的电机轴250可以通过联轴器410与油泵组件100的油泵轴130相连,当然,电机组件200不限于直接驱动油泵组件100,还可以通过变速箱或减速器等传动机构与油泵组件100连接。
油泵组件100在电机组件200的驱动下工作,以将低压油转变为高压油输出,油泵组件100可以为多种结构形式,油泵组件100可以为外啮合齿轮泵、摆线齿轮泵、叶片泵或柱塞泵等,电机组件200可以是同步电机、异步电机等各种类型的电机。
油泵组件100浮动安装在电机组件200的端部,油泵组件100可以浮动安装在电机组件200的前端盖210上,油泵组件100可以直接浮动安装在前端盖210上,或者油泵组件100可以通过其他安装结构(油泵组件100可以通过支撑板件)间接浮动安装在前端盖210上,具体地,油泵组件100的前盖板110可以支撑在电机组件200的前端盖210上,其中前盖板110为油泵组件100的动力输入端的盖板,即油泵轴130从前盖板110伸出,对应地,后盖板120为油泵组件100的另一端的盖板。
电动油泵总成1000具有总进油口1010和总出油口1020,油液从总进油口1010进入电动油泵总成1000,并从总出油口1020流出。油泵组件100具有吸油口和排油口,低压(常压)油从吸油口吸入油泵组件100的腔体内,并转变为高压油从排油口排出。
弹性件311弹性连接在电机组件200与油泵组件100之间,油泵组件100浮动安装在前端盖210上,弹性件311可以弹性连接在前端盖210与油泵组件100之间,以向油泵组件100施加朝向电机组件200的轴向预紧力,或者弹性件311与油泵组件100接触或相连以向油泵组件100施加使油泵组件100浮动支撑在电机组件200的前端盖210上的轴向预紧力。
油泵组件100在弹性件311的弹力作用下被预压紧在电机组件200的前端盖210上,弹性件311可以在轴向上被拉伸地连接在油泵组件100的壳体与电机组件200的前端盖210之间,油泵组件100的壳体上可以设有沿径向向外凸出的凸耳112,凸耳112与前端盖210可以沿轴向间隔开,弹性件311可以弹性拉伸地连接在凸耳112与前端盖210之间,或者弹性件311可以在轴向上被压缩地连接在油泵组件100的壳体与电机组件200的前端盖210之间。
弹性件311对油泵组件100的弹性预紧力,使得油泵组件100被预压紧在电机组件200的前端盖210上,保证油泵组件100的密封性,且在装配时无需在油泵组件100上进行螺栓大扭矩锁紧,弹性件311提供的预紧力只需保证油泵组件100安装上即可,这样可以减小油泵组件100的工作摩擦力,提升油泵组件100的工作能效,油泵组件100的机械效率更高。
由于油泵组件100采用悬浮式安装,不需要螺栓固定在壳体上,在施加一定力的作用 下油泵组件100可以在径向和轴向有一定的可移动量,在电机组件200的电机轴250转动时,油泵组件100的油泵轴130可以自适应对心,有效地避免因电机轴250、联轴器410和油泵轴130三者不同心而带来的噪声,且由于自适应对心的特性,可以降低对加工电机轴250、联轴器410和油泵轴130的加工精度要求,以降低电动油泵总成1000的加工成本和装配精度需求。
油泵组件100的输出脉冲可以克服弹性件311的弹性力,使油泵组件100发生轴向位移,以降低甚至消除油泵组件100的输出脉冲。
在一些实施例中1000,通过设置弹性件311来预安装油泵组件100,且使油泵组件100浮动安装,可以减小油泵组件100的工作摩擦力,提升油泵组件100的工作能效,降低油泵组件100的输出脉冲,且电动油泵总成1000具备自适应对中的特性,可以降低电动油泵总成1000的加工精度和装配精度需求。
根据本公开一个优选实施例的电动油泵总成1000,如图1、图2、图3、图19、图20、图29、图30所示,电动油泵总成1000还可以包括:定位件312,定位件312连接在油泵组件100与前端盖210之间,且定位件312与油泵组件100和电机组件200的前端盖210中的至少一个沿径向间隙配合。
在一个可选的实施例中,定位件312可以与油泵组件100固定连接(无径向间隙活动量),定位件312可以与前端盖210沿径向间隙配合;在另一个可选的实施例中,定位件312可以与油泵组件100沿径向间隙配合,定位件312可以与前端盖210固定连接(无径向间隙活动量);在一个可选的实施例中,定位件312可以与油泵组件100沿径向间隙配合,定位件312可以与前端盖210沿径向间隙配合。
定位件312用于预定位并传递扭矩,根据定位件312与油泵组件100或前端盖210的间隙配合余量,可以限定油泵组件100的径向浮动行程,且保证油泵组件100始终在径向中心区附近。
具体地,定位件312可以为螺栓,油泵组件100的外周可以设有凸耳112,凸耳112可以设有定位孔,螺栓贯穿定位孔,且螺栓与前端盖210螺纹连接,螺栓与定位孔间隙配合,以使油泵组件100可以作径向浮动。这样,定位件312在轴向上相对电机组件200位置固定,不易脱落,且传递扭矩更稳定。
弹性件311可以为弹簧,且弹性件311套设在螺栓外,弹簧弹性止抵在凸耳112与螺栓的头部之间。在电动油泵总成1000的工作过程中,凸耳112可以止抵弹簧,在油泵组件100受到一定的力的作用下,油泵组件100可以做轴向浮动,使弹簧朝螺栓的头部进一步压缩或降低压缩幅度。
凸耳112的形成方式有多种,油泵组件100的前盖板110的至少部分边沿沿径向向外 延伸以形成凸耳112,这样凸耳112与电机组件200的前端盖210基本贴合,油泵组件100的预安装更稳定。
或者,凸耳112可以与前端盖210沿轴向间隔开,油泵组件100的周向的壳体的至少部分边沿沿径向向外延伸以形成凸耳112,在该实施例中,弹性件311可以弹性拉伸地连接在凸耳112与前端盖210之间,当然,弹性件311也可以如上述实施例所述的弹性止抵在凸耳112与螺栓的头部之间。
定位件312和弹性件311可以均为多个,凸耳112也为多个,多个凸耳112沿周向间隔开布置,多个定位件312可以沿油泵组件100的周向间隔开布置,多个弹性件311可以沿油泵组件100的周向间隔开布置,优选地,凸耳112可以沿周向均匀间隔开布置,多个定位件312、多个弹性件311、多个凸耳112一一对应。这样,油泵组件100在周向上的各个方向的预安装力较为均衡,且油泵组件100在轴向上浮动时各向一致,在径向上浮动时,在各个方向受到的约束也较为均衡。
实施例五
如图4-图9、图21-图23、图31-图33所示,根据本公开一个实施例的电动油泵总成1000包括:电机组件200、油泵组件100和磁性件321。
其中,油泵组件100与电机轴250动力耦合连接,电机组件200用于提供油泵组件100运转的驱动力,电机组件200的电机轴250可以通过联轴器410与油泵组件100的油泵轴130相连,当然,电机组件200不限于直接驱动油泵组件100,还可以通过变速箱或减速器等传动机构与油泵组件100连接。
油泵组件100在电机组件200的驱动下工作,以将低压油转变为高压油输出,油泵组件100可以为多种结构形式,油泵组件100可以为外啮合齿轮泵、摆线齿轮泵、叶片泵或柱塞泵等,电机组件200可以是同步电机、异步电机等各种类型的电机。
油泵组件100沿径向浮动安装在电机组件200的端部,油泵组件100可以沿径向浮动安装在电机组件200的前端盖210上,油泵组件100可以直接沿径向浮动安装在前端盖210上,或者油泵组件100可以通过其他安装结构(油泵组件100可以通过支撑板件)间接沿径向浮动安装在前端盖210上,具体地,油泵组件100的前盖板110可以支撑在电机组件200的前端盖210上,其中前盖板110为油泵组件100的动力输入端的盖板,即油泵轴130从前盖板110伸出,对应地,后盖板120为油泵组件100的另一端的盖板。
电动油泵总成1000具有总进油口1010和总出油口1020,油液从总进油口1010进入电动油泵总成1000,并从总出油口1020流出。油泵组件100具有吸油口和排油口,低压(常压)油从吸油口吸入油泵组件100的腔体内,并转变为高压油从排油口排出。
磁性件321用于向油泵组件100施加轴向的磁力,以使油泵组件100沿径向浮动支撑在电机组件200的端部,油泵组件100沿径向浮动支撑在前端盖210上,磁性件321可以为永磁铁。磁性件321可以与电机组件200固定连接,并通过对油泵组件100的磁吸使油泵组件100沿径向浮动安装在电机组件200的端部(前端盖210),或者磁性件321可以与油泵组件100固定连接,并通过对电机组件200的磁吸作用使油泵组件100沿径向浮动安装在电机组件200的端部(前端盖210),或者磁性件321对油泵组件100的磁吸和对电机组件200的磁吸作用使油泵组件100沿径向浮动安装在电机组件200的端部(前端盖210)。
油泵组件100沿径向浮动安装在电机组件200上,在装配时无需在油泵组件100上进行螺栓大扭矩锁紧,磁性件321提供的预紧磁吸力只需保证油泵组件100安装上即可,这样可以减小油泵组件100的工作摩擦力,提升油泵组件100的工作能效,油泵组件100的机械效率更高。
由于磁力吸附并非强制限位,油泵组件100采用悬浮式安装,不需要螺栓固定在壳体上,在施加一定力的作用下油泵组件100可以在径向有一定的可移动量,在电机组件200的电机轴250转动时,油泵组件100的油泵轴130可以自适应对心,有效地避免因电机轴250、联轴器410和油泵轴130三者不同心而带来的噪声,且由于自适应对心的特性,可以降低对加工电机轴250、联轴器410和油泵轴130的加工精度要求,降低电动油泵总成1000的加工成本和装配精度需求。
在一些实施例中1000,通过设置磁性件321来预安装油泵组件100,且使油泵组件100浮动安装,可以减小油泵组件100的工作摩擦力,提升油泵组件100的工作能效,电动油泵总成1000具备自适应对中的特性,可以降低电动油泵总成1000的加工精度和装配精度需求。
根据本公开一个优选实施例的电动油泵总成1000,如图4、图6、图8、图21、图23、图31、图33所示,磁性件321可以与油泵组件100的前盖板110、前端盖210两者中的一个相连,前盖板110、前端盖210两者中的另一个可以为铁磁性材料制成。
可选地,前盖板110和前端盖210两者中的另一个上设有与磁性件321相对应的凹槽,磁性件321的至少部分凸出于前盖板110和前端盖210两者中的一个,并与凹槽沿径向间隙配合,磁性件321的其余部分嵌入前盖板110和前端盖210两者中的一个。
磁性件321可以与油泵组件100的前盖板110固定连接,磁性件321的一部分嵌入前盖板110,另一部分凸出于前盖板110,电机组件200的前端盖210上可以设有与磁性件321相对应的凹槽,磁性件321凸出于前盖板110的部分可以伸入凹槽,并与凹槽沿径向间隙配合,电机组件200的前端盖210可以为铁磁性材料制成,前端盖210可以为碳钢材料。
或者,磁性件321可以与电机组件200的前端盖210固定连接,磁性件321的一部分嵌入前端盖210,另一部分凸出于前端盖210,油泵组件100的前盖板110上可以设有与磁性件321相对应的凹槽,磁性件321凸出于前端盖210的部分可以伸入凹槽,并与凹槽沿径向间隙配合,油泵组件100的前盖板110可以为铁磁性材料制成,前端盖210可以为碳钢材料。
可选地,前盖板110和前端盖210两者中的另一个上设有与磁性件321相对应的凸台,磁性件321上设有凹槽,凸台伸入凹槽且与凹槽沿径向间隙配合。
磁性件321可以与油泵组件100的前盖板110固定连接,电机组件200的前端盖210上可以设有与磁性件321相对应的凸台,磁性件321上设有与凸台相对应的凹槽,凸台可以伸入该凹槽,并与凹槽沿径向间隙配合,电机组件200的前端盖210可以为铁磁性材料制成,前端盖210可以为碳钢材料。
或者,磁性件321可以与电机组件200的前端盖210固定连接,油泵组件100的前盖板110上可以设有与磁性件321相对应的凸台,磁性件321上设有与凸台相对应的凹槽,凸台可以伸入该凹槽,并与凹槽沿径向间隙配合,油泵组件100的前盖板110可以为铁磁性材料制成,前端盖210可以为碳钢材料。
可以理解的是,磁性件321可以用于预定位和传递扭矩,根据磁性件321与对应的凸台或凹槽的间隙配合余量,可以限定油泵组件100的径向浮动行程,且保证油泵组件100始终在径向中心区附近。
磁性件321可以为多个,多个磁性件321沿周向间隔开布置,优选地,磁性件321可以为沿周向均匀间隔开布置在前端盖210与前盖板110之间。这样,油泵组件100在周向上的各个方向的预安装力较为均衡,在径向上浮动时,在各个方向受到的约束也较为均衡。
根据本公开另一个优选实施例的电动油泵总成1000,如图5、图7、图9、图22、图32所示,电动油泵总成1000具有:油泵腔1030,油泵组件100安装在油泵腔1030内,油泵腔1030与油泵组件100的排油口相连,且油泵腔1030与总出油口1020连通。
这样,一方面,油泵组件100的外围被高压油包裹,油泵组件100的振动噪音可以被油泵腔1030内的高压油吸收以及被油泵腔1030的壁面反射,以降低电动油泵总成1000的工作噪音。
另一方面,油泵腔1030可以起到消除油液脉动且进行流体消音的作用,通过设计油泵腔1030的尺寸可以实现对各种频率噪音的消除。
又一方面,油泵腔1030的高压油液可以对油泵组件100施加轴向的推力,高压油对油泵组件100的后盖板120施加的压力可以使油泵组件100支撑在电机组件200的前端盖210上,这样油泵组件100在运行过程中可以受到额外的轴向力,且油泵组件100在运行过程 中可以保持相对稳定和固定。
油泵组件100与前端盖210之间可以通过定位单元322预定位,且定位单元322与油泵组件100和前端盖210中的至少一个沿径向间隙配合,油泵组件100的后盖板120和油泵腔1030的顶壁1031分别设有磁极方向相反的磁性件321。
定位单元322可以与油泵组件100的前盖板110沿径向间隙配合,定位单元322可以嵌入前端盖210;或者定位单元322可以与前端盖210沿径向间隙配合,定位单元322可以嵌入油泵组件100的前盖板110;或者如图5、图7、图9、图22、图32所示的实施例中,定位单元322可以与油泵组件100的前盖板110沿径向间隙配合,定位单元322可以与前端盖210沿径向间隙配合。定位单元322可以为圆柱销。
需要说明的是,油泵组件100的后盖板120上的磁性件321可以嵌入后盖板120,油泵腔1030的顶壁1031上的磁性件321可以嵌入油泵腔1030的顶壁1031,这两个位置的磁性件321的相同的磁极相对设置,N极对N极,S极对S极,优选地,这两个位置的磁性件321相互正对设置,当然,若油泵组件100的后盖板120以及前端盖210均为铁磁性材料制成,这两个位置的磁性件321也可以错开设置。
磁性件321可以为多个,多个磁性件321沿周向间隔开布置,优选地,磁性件321可以为沿周向均匀间隔开布置在后盖板120与油泵腔1030的顶壁1031之间。这样,油泵组件100在周向上的各个方向的预安装力较为均衡,在径向上浮动时,在各个方向受到的约束也较为均衡。
实施例六
如图10-图12、图24、图25、图34、图35和图41所示,根据本公开一个实施例的电动油泵总成1000包括:电机组件200、油泵组件100和卡扣331。
其中,油泵组件100与电机轴250动力耦合连接,电机组件200用于提供油泵组件100运转的驱动力,电机组件200的电机轴250可以通过联轴器410与油泵组件100的油泵轴130相连,当然,电机组件200不限于直接驱动油泵组件100,还可以通过变速箱或减速器等传动机构与油泵组件100连接。
油泵组件100在电机组件200的驱动下工作,以将低压油转变为高压油输出,油泵组件100可以为多种结构形式,油泵组件100可以为外啮合齿轮泵、摆线齿轮泵、叶片泵或柱塞泵等,电机组件200可以是同步电机、异步电机等各种类型的电机。
油泵组件100浮动安装在电机组件200的端部,油泵组件100可以浮动安装在电机组件200的前端盖210上,油泵组件100可以直接浮动安装在前端盖210上,或者油泵组件100可以通过其他安装结构(油泵组件100可以通过支撑板件)间接浮动安装在前端盖210 上,具体地,油泵组件100的前盖板110可以支撑在电机组件200的前端盖210上,其中前盖板110为油泵组件100的动力输入端的盖板,即油泵轴130从前盖板110伸出,对应地,后盖板120为油泵组件100的另一端的盖板。
电动油泵总成1000具有总进油口1010和总出油口1020,油液从总进油口1010进入电动油泵总成1000,并从总出油口1020流出。油泵组件100具有吸油口和排油口,低压(常压)油从吸油口吸入油泵组件100的腔体内,并转变为高压油从排油口排出。
油泵组件100浮动安装在电机组件200的端部,卡扣331连接在油泵组件100与电机组件200之间,且油泵组件100和电机组件200中的一个与卡扣331间隙配合,油泵组件100和电机组件200中的另一个与卡扣331固定连接,以使油泵组件100浮动支撑在电机组件200上。
油泵组件100浮动安装在前端盖210上,卡扣331连接在油泵组件100与前端盖210之间,且油泵组件100和前端盖210中的一个与卡扣331间隙配合,油泵组件100和前端盖210中的另一个与卡扣331固定连接,以使油泵组件100浮动支撑在前端盖210上。
卡扣331可以与油泵组件100的前盖板110固定连接,卡扣331的一端嵌入前盖板110,卡扣331与电机组件200的前端盖210间隙配合;或者,卡扣331可以与电机组件200的前端盖210固定连接,卡扣331的一端嵌入前端盖210,卡扣331与油泵组件100的前盖板110间隙配合。
卡扣331连接在前端盖210与油泵组件100之间,以实现限位、预定位和传递扭矩的作用,其中限位包括轴向和径向的限位,需要说明的是,此处所述的限位,并非一定限定为卡死,而是限制油泵组件100在轴向和/或径向有一定幅度的可移动量。
油泵组件100在卡扣331的轴向限位作用下被预安装在电机组件200的前端盖210上,在装配时无需在油泵组件100上进行螺栓大扭矩锁紧,卡扣331提供的预紧力或预限位只需保证油泵组件100安装上即可,这样可以减小油泵组件100的工作摩擦力,提升油泵组件100的工作能效,油泵组件100的机械效率更高。
由于油泵组件100采用悬浮式安装,不需要螺栓固定在壳体上,在施加一定力的作用下油泵组件100可以在径向和轴向有一定的可移动量,在电机组件200的电机轴250转动时,油泵组件100的油泵轴130可以自适应对心,有效地避免因电机轴250、联轴器410和油泵轴130三者不同心而带来的噪声,且由于自适应对心的特性,可以降低对加工电机轴250、联轴器410和油泵轴130的加工精度要求,降低电动油泵总成1000的加工成本和装配精度需求。
油泵组件100的输出脉冲可以克服卡扣331的弹性力,使油泵组件100发生轴向位移,以降低甚至消除油泵组件100的输出脉冲。
在一些实施例中1000,通过设置卡扣331来预安装油泵组件100,且使油泵组件100浮动安装,可以减小油泵组件100的工作摩擦力,提升油泵组件100的工作能效,降低油泵组件100的输出脉冲,且电动油泵总成1000具备自适应对中的特性,可以降低电动油泵总成1000的加工精度和装配精度需求。
根据本公开一个优选实施例的电动油泵总成1000,如图10-图12、图24、图25、图34、图35和图41所示,卡扣331的一端与前端盖210固定连接,卡扣331的该端可以嵌入前端盖210,卡扣331的另一端设有卡钩332,卡钩332与油泵组件100的前盖板110卡接,且卡钩332在轴向上对前盖板110限位。卡钩332的至少部分可以在油泵组件100的轴向移动路径上与前盖板110的至少部分重合。
具体地,如图41所示,前盖板110上可以设有卡接槽111,卡接槽111可以为环形(圆环形、方环形或其他形状的环形),或者卡接槽111可以为图41所示的实施例中的豁口。
卡扣331贯穿卡接槽111,且卡扣331与卡接槽111间隙配合,这样,油泵组件100可以在径向上浮动,即在径向上存在一定的可移动量,在电机组件200的电机轴250转动时,油泵组件100的油泵轴130可以自适应对心,有效地避免因电机轴250、联轴器410和油泵轴130三者不同心而带来的噪声。
卡钩332的朝向前端盖210的端面与油泵组件100的前盖板110间隙配合,这样油泵组件100在轴向上具有微小的浮动量,油泵组件100在轴向上不被卡死,不妨碍油泵组件100的径向浮动,且由于油泵组件100与电机组件200之间的安装压力小,可以减小油泵组件100的工作摩擦力,提升油泵组件100的工作能效,油泵组件100的机械效率更高。
前盖板110的边沿具有沿径向向外凸出的凸耳112,卡接槽111设在凸耳112上,卡接槽111可以为凸耳112上的闭合环形,也可以在凸耳112上设豁口以形成,卡钩332的朝向前端盖210的端面与凸耳112的背离前端盖210的表面相对设置,卡钩332具有导向面333,导向面333沿前盖板110的径向从内向外向远离前端盖210的方向倾斜,导向面333可以为斜面。
卡扣331可以大体为杆状,这样,卡扣331在径向上弹性较好,卡扣331可以为塑料件或具有一定弹性的金属制成。
如图41所示,在安装油泵组件100时,卡接槽111的朝向前端盖210的边沿与卡钩332上的导向面333作用,卡扣331发生弹性变形向外弯曲,卡接槽111越过卡扣331的倒钩后,卡扣331回弹,油泵组件100的前盖板110被卡钩332限位,油泵组件100相对固定,且此时卡扣331与卡接槽111为间隙配合,油泵组件100在径向和轴向有一定量的移动空间,在一定的外力作用下油泵组件100可以在径向和轴向有一定的移动量。
如图41所示,卡扣331可以为多个,凸耳112也为多个,多个凸耳112沿周向间隔开 布置,多个卡扣331沿周向间隔开布置,优选地,凸耳112可以沿周向均匀间隔开布置,多个卡扣331、多个凸耳112一一对应。这样,油泵组件100在周向上的各个方向的预安装力较为均衡,且油泵组件100在轴向上浮动时各向一致,在径向上浮动时,在各个方向受到的约束也较为均衡。
实施例七
如图13-图18、图26-图28、图36-图38所示,根据本公开一个实施例的电动油泵总成1000包括:电机组件200和油泵组件100。
其中,油泵组件100与电机轴250动力耦合连接,电机组件200用于提供油泵组件100运转的驱动力,电机组件200的电机轴250可以通过联轴器410与油泵组件100的油泵轴130相连,当然,电机组件200不限于直接驱动油泵组件100,还可以通过变速箱或减速器等传动机构与油泵组件100连接。
油泵组件100在电机组件200的驱动下工作,以将低压油转变为高压油输出,油泵组件100可以为多种结构形式,油泵组件100可以为外啮合齿轮泵、摆线齿轮泵、叶片泵或柱塞泵等,电机组件200可以是同步电机、异步电机等各种类型的电机。
油泵组件100安装在电机组件200的端部,油泵组件100可以安装在电机组件200的前端盖210上,油泵组件100可以直接安装在前端盖210上,或者油泵组件100可以通过其他安装结构(油泵组件100可以通过支撑板件)间接安装在前端盖210上,具体地,油泵组件100的前盖板110可以支撑在电机组件200的前端盖210上,其中前盖板110为油泵组件100的动力输入端的盖板,即油泵轴130从前盖板110伸出,对应地,后盖板120为油泵组件100的另一端的盖板。
电动油泵总成1000具有总进油口1010和总出油口1020,油液从总进油口1010进入电动油泵总成1000,并从总出油口1020流出。油泵组件100具有吸油口和排油口,低压(常压)油从吸油口吸入油泵组件100的腔体内,并转变为高压油从排油口排出。
电机组件200具有油泵腔1030,电机组件200包括前端盖210,前端盖210可以用于限定出油泵腔1030,油泵腔1030内填充有油液,油泵腔1030不单单由前端盖210限定出,前端盖210可以仅限定油泵腔1030的部分壁面。
油泵组件100与电机组件200固定连接,油泵组件100可以与电机组件200的前端盖210固定连接,油泵组件100位于油泵腔1030内,油泵组件100的吸油口与总进油口1010连通,油泵组件100的排油口与总出油口1020连通。
在一些实施例中1000,油泵组件100的外围被油液包裹,油泵组件100的振动噪音可以被油泵腔1030内的油液吸收以及被油泵腔1030的壁面反射,以降低电动油泵总成1000 的工作噪音。
如图13-图16、图26-图28、图36-图38所示,电机组件200还可以具有液冷腔260,液冷腔260与总进油口1010连通,液冷腔260可以为电机组件200的舱室内的空余空间,油液通过总进油口1010流入液冷腔260,油液填充在液冷腔260内,相当于电机组件200内部的零部件(定子241、转子242等)浸泡在油液中。
液冷腔260内充满了流动的油液,电机组件200内部的零部件浸泡在油液中,定子241和转子242可以与油液充分接触,由于油液的热容量较大,可以避免定子241和转子242因负载波动而产生的局部高温,流动的油液同时为运动件提供散热和润滑,保证电机组件200工作稳定,且可以降低工作噪音。
电机组件200的转子242可以浸没在油液(低压油)内,这样油液可以起到迟滞转子242转动的作用,以缓冲转子242的急加速或急减速及惯性模量过大的问题,当电动油泵总成1000用于转向系统1时,可以防止电机组件200抛载时对转向油路的冲击,转向的手感更佳,方向盘不易抖动。
油泵组件100的吸油口与液冷腔260连通,油泵组件100的排油口与总出油口1020连通。
也就是说,油液的流动路径为:总进油口1010-液冷腔260-油泵组件100的吸油口-油泵组件100的排油口-总出油口1020,这样即可将低压油转变为高压油,且循环流动的油液可以带走电机组件200的热量,保证电机组件200工作稳定,电机组件200不必单独设置散热单元,可以缩小电动油泵总成1000的体积和重量,且循环流动的形成简单,易于制造。
在一些实施例中1000,通过设置与油泵组件100连通的液冷腔260来实现油泵组件100的吸油和电机组件200的散热,有助于提升电动油泵总成1000的散热性能和工作稳定性,且集成度高,轻量化水平高。
在一个具体的实施例中,如图13-图18、图26-图28、图36-图38所示,油泵组件100与前端盖210可以通过螺纹连接件341固定连接。油泵组件100的前盖板110的边沿具有沿径向向外凸出的凸耳112,螺纹连接件341贯穿凸耳112并与前端盖210螺纹连接。
这样,油泵组件100与电机组件200的连接牢固、方便,且螺栓拧紧的摩擦力可以稳定地传递扭矩。
如图41所示,螺栓可以为多个,凸耳112也为多个,多个凸耳112沿周向间隔开布置,多个螺栓沿周向间隔开布置,优选地,凸耳112可以沿周向均匀间隔开布置,多个螺栓、多个凸耳112一一对应。这样,油泵组件100在周向上的各个方向的安装力较为均衡,扭矩的传递也更稳定。
油泵组件100与前端盖210可以通过定位结构(图中未示出)定位。定位结构用于保证油泵组件100的油泵轴130与电机组件200的电机轴250的同轴度。
在一些可选的实施例中,定位结构可以为定位销,定位销的两端分别伸入油泵组件100的前盖板110和前端盖210上的定位槽。
在另一些可选的实施例中,定位结构可以为从前端盖210凸出的定位凸台,油泵组件100的前盖板110设有定位凹槽,定位凸台伸入定位凸台以实现油泵组件100的定位。
在又一些可选的实施例中,定位结构可以为从油泵组件100的前盖板110凸出的定位凸台,电机组件200的前端盖210可以设有定位凹槽,定位凸台伸入定位凸台以实现油泵组件100的定位。
需要说明的是,上述实施例一、实施例二、实施例三、实施例四、实施例五、实施例六、实施例七还可以与下述特征结合以形成新的实施例。
如图1-图38所示,总进油口1010可以设在前端盖210上,具体地,总进油口1010可以设在前端盖210的上方,总进油口1010可以设在整个电动油泵总成1000的最高点,当油液流入时,电动油泵总成1000内的残留气体可以顺畅地向上排出,在电动油泵总成1000具有液冷腔260的一些实施例中,总进油口1010可以与循环油道262连通。
如图1-图38所示,电动油泵总成1000可以具有:油泵腔1030,油泵组件100安装在油泵腔1030内,油泵腔1030内填充有油液。
这样,油泵组件100的外围被油液包裹,油泵组件100的振动噪音可以被油泵腔1030内的油液吸收以及被油泵腔1030的壁面反射,以降低电动油泵总成1000的工作噪音。
油泵腔1030的成型方式有多种,可以设一个独立的桶体,桶体限定出油泵腔1030,该桶体与电机组件200的前端盖210固定连接,或者油泵腔1030的部分周壁可以与前端盖210一体成型,以减少电动油泵总成1000的装配工序。
如图1-图38所示,前端盖210可以具有沿轴向向远离电机组件200的方向延伸的环形凸台213,环形凸台213可以形成油泵腔1030的侧壁,油泵腔1030的侧壁可以为两端敞开的桶形,油泵腔1030的侧壁环绕油泵组件100,前端盖210自身与油泵腔1030的侧壁的一端相连以形成油泵腔1030的底壁,油泵腔1030的顶壁1031与环形凸台213可以通过螺纹紧固件相连,以封闭油泵腔1030的另一端。这样,油泵组件100的安装方便。
如图1-图38所示,油泵组件100与前端盖210之间可以夹设有密封圈,密封圈可以是橡胶圈等,密封圈可以防止油泵腔1030的油液泄漏,并使油泵腔1030与电机组件200的舱室隔断。
需要说明的是,此处所述的底壁、顶壁并非限定于上下方向,而是从油泵组件100的装配角度来讲,支撑油泵组件100的壁面为底壁,与底壁相对的壁面为顶壁,在图1-图38所示的实施例中,电动油泵总成1000横置,电机组件200和油泵组件100均横置,图中油泵组件100的左侧壁面为底壁,右侧壁面为顶壁。
前端盖210及环形凸台213可以为铝合金制件,以减轻电动油泵总成1000的总重量,油泵腔1030的顶壁1031可以为钢制件,这样在满足强度的要求下可以将油泵腔1030的顶壁1031做得较薄,使得电动油泵总成1000的轴向空间更紧凑。
在一些可选的实施例中,如图14、图16、图18、图27、图37所示,油泵腔1030可以与总进油口1010连通,油泵组件100的吸油口可以与油泵腔1030相连,前端盖210设有出油通道212,出油通道212的一端与油泵组件100的排油口相连,出油通道212的另一端形成总出油口1020。
在图14和图16所示的实施例中,环形凸台213上可以设有油泵腔进口和油泵腔出口,油液从油泵腔进口进入油泵腔1030,并从油泵腔出口流出到电机组件200的液冷腔260内,再通过吸油口吸入油泵组件100,油泵组件100将油液从低压转换为高压后从排油口处通过出油通道212排向总出油口1020。
也就是说,油液的流动方向为:总进油口1010-油泵腔1030-液冷腔260-油泵组件100的吸油口-油泵组件100的排油口-出油通道212-总出油口1020,这样即可将低压油转变为高压油,且循环流动的油液可以带走电机组件200的热量,保证电机组件200工作稳定,电机组件200不必单独设置散热单元,可以缩小电动油泵总成1000的体积和重量。
由于油泵腔1030内填充的油液为低压油,油泵腔1030的压力小,便于密封,油泵腔1030的壁面不存在高压容器的作用,不必受限于强度的影响,提供了轻量化设计的可能性,油泵腔1030的壁面可以设置的较薄,油泵腔1030的壁面可以由薄壁金属制成,以减小电动油泵总成1000的占用空间及重量。
需要说明的是,优选地,在油泵腔1030内填充低压油的实施例中,油泵组件100的壳体与电机组件200固定连接,可以通过实施例七所述的螺栓连接的方式固定连接。
在另一些可选的实施例中,如图1-图13、图15、图17、图19-图26、图28-图36和图38所示,油泵腔1030与油泵组件100的排油口相连,且油泵腔1030与总出油口1020连通,前端盖210可以设有出油通道212,出油通道212的一端与油泵腔1030相连,出油通道212的另一端形成总出油口1020。
油液的流动路径为:总进油口1010-油泵组件100的吸油口-油泵组件100的排油口-油泵腔1030-出油通道212-总出油口1020,这样即可将低压油转变为高压油。
其中,在图1、图4、图5、图10、图13、图19、图20、图21、图24、图26、图29、 图31、图32、图34、图36所示的实施例中,总进油口1010与吸油口之间可以通过液冷腔260以及电机轴油道251连通。
在图2、图6、图7、图11、图15、图23、图25、图28、图30、图33、图35、图38所示的实施例中,总进油口1010与吸油口之间可以通过液冷腔260连通。
在图3、图8、图9、图12、图17所示的实施例中,总进油口1010与吸油口之间可以通过前端盖210上的进油通道215连通。
一方面,油泵腔1030可以起到消除油液脉动且进行流体消音的作用,通过设计油泵腔1030的尺寸可以实现对各种频率噪音的消除。
另一方面,油泵腔1030的高压油液可以对油泵组件100施加轴向的推力P,高压油对油泵组件100的后盖板120施加的压力P可以使油泵组件100支撑在电机组件200的前端盖210上,这样油泵组件100在运行过程中可以受到额外的轴向力,且油泵组件100在运行过程中可以保持相对稳定和固定。
需要说明的是,优选地,在油泵组件100浮动安装时,油泵腔1030与油泵组件100的排油口连通。
如图29-图38所示的实施例,电动油泵总成1000还可以包括:隔音罩510,隔音罩510可以罩设在油泵腔1030的外壁面外,隔音罩510包覆在油泵腔1030的外壁面外,以进一步地隔绝油泵组件100的工作噪音。
隔音罩510可以使用隔音材料制成,可以根据噪声的频谱特点,有针对性地选择相应频谱的隔音材料,降低噪声,可选地,隔音罩510可以为尼龙件,金属尼龙复合材料制成,金属尼龙复合材料为尼龙基材内添加金属网的复合材料,金属尼龙复合材料的内表面光滑、中间多孔,有助于反射及吸收噪音,孔隙大小和比例可以根据频谱特点来选择。
如图1-图18所示的实施例,电动油泵总成1000还可以包括:低压罩520,低压罩520可以罩设在油泵腔1030的壁面外,且限定出与总进油口1010连通的低压腔1040,低压罩520与前端盖210相连,低压罩520可以与前端盖210卡接相连。
低压腔1040内可以填充有低压油,以进一步地吸收油泵组件100的工作噪音,总进油口1010可以与低压腔1040直接相连,液冷腔260或进油通道215内的油液可以通过低压腔1040与总进油口1010相连。
低压罩520可以由内表面光滑、中间有孔的材料制成,这样,低压罩520对噪音的反射能力强、吸收效果好。在一些具体的实施例中,低压罩520可以为塑料件或金属尼龙复合材料制成,金属尼龙复合材料为尼龙基材内添加金属网的复合材料。
低压罩520可以具有锥形周壁,低压罩520横向安装,且低压罩520的内径从靠近总 进油口1010到远离总进油口1010的方向逐渐变小,这样低压腔1040内的残余气体可以沿锥面流向总进油口1010排出,在电动油泵总成1000运行时可以彻底排出低压罩520内的残余气体。
在图1-图38所示的实施例中,电机组件200和油泵组件100横置。这样可以消除油泵组件100的自重对油泵组件100与电机组件200之间的装配压力的影响,且电动油泵总成1000的高度小,便于在车辆上布置。
如图1-图38所示,油泵组件100的油泵轴130与电机组件200的电机轴250可以通过联轴器410动力耦合连接,联轴器410用于传递扭矩,即电机轴250可以通过联轴器410带动油泵轴130转动,联轴器410有多种结构形式,滑块联轴器、铰接联轴器、齿轮联轴器等。
在一个优选的实施例中,如图42所示,联轴器410具有联接孔411,电机轴250具有第一键,油泵轴130具有第二键,第一键与联接孔411配合,第二键与联接孔411配合,且第一键与第二键在轴向上具有重合段。
也就是说,联接孔411可以包括相互错开的两个部分以分别与电机轴250、油泵轴130配合,电机轴250、联轴器410、油泵轴130三者配合后的长度小于电机轴250与油泵轴130的长度之和,这样联轴器410的轴向长度短,联轴器410的轴向长度可缩短一半,使得电动油泵总成1000的轴向空间更紧凑。
具体地,联接孔411可以为贯穿联轴器410的“十”字形孔,联轴器410可以为圆柱形,联接孔411可以沿轴向开设在联轴器410的正中间。第一键与第二键可以均为“一”字形,此处的“一”字形包括连续的条状,也包括间断的条状,且第一键与第二键中的至少一个的中部具有避让槽。
这样,第一键与第二键可以实现轴向重叠而不干涉,扭矩从电机轴250的第一键的侧面传递给联轴器410,联轴器410又将扭矩传递至油泵轴130的第二键的侧面。由于电机轴250或油泵轴130在传递扭矩时扭转剪切力是从轴表面向中心梯度减小,在中心时为零,所以在键的中部设避让槽对键的强度影响较小。
选择在哪个键开设避让槽时,可以根据轴的直径来选定,若油泵轴130的直径小于电机轴250的直径,则第一键的中部具有避让槽;若油泵轴130的直径大于电机轴250的直径,则第二键的中部具有避让槽。这样,可以进一步地降低开设避让槽对轴的强度的影响。当然,在一个具体的实施例中,如图42所示,第一键与第二键的中部可以均开设有避让槽,以防止电机轴250或油泵轴130直接接触。
在本说明书的描述中,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合,包括但不限于油泵组件100的多种安装方式(包括通过弹性件311浮动安装、通过卡扣331浮动安装、通过磁性件321浮动安装、通过螺纹连接件341固定安装)、电机组件200的多种冷却方式或输油方式(包括通过电机轴油道251输油、通过液冷腔260输油、隔离冷却)可以相互组合以得到新的实施例。
实施例一和实施例四的特征相结合可以得到如图1、图19、图29所示的实施例。
实施例一和实施例五的特征相结合可以得到如图4、图5、图21、图22、图31、图32所示的实施例。
实施例一和实施例六的特征相结合可以得到如图10、图24、图34所示的实施例。
实施例一和实施例七的特征相结合可以得到如图13、图14、图26、图27、图36、图37所示的实施例。
实施例二和实施例四的特征相结合可以得到如图2、图20、图30所示的实施例。
实施例二和实施例五的特征相结合可以得到如图6、图7、图23、图33所示的实施例。
实施例二和实施例六的特征相结合可以得到如图11、图25、图35所示的实施例。
实施例二和实施例七的特征相结合可以得到如图15、图16、图28、图38所示的实施例。
实施例三和实施例四的特征相结合可以得到如图3所示的实施例。
实施例三和实施例五的特征相结合可以得到如图8、图9所示的实施例。
实施例三和实施例六的特征相结合可以得到如图12所示的实施例。
实施例三和实施例七的特征相结合可以得到如图17、图18所示的实施例。
本公开还公开了一种转向系统1,如图43所示,本公开实施例的转向系统1具有上述任一种实施例描述的电动油泵总成1000,电动油泵总成1000输出的油液可以通过转向动力缸的活塞推杆驱动横向杆位移实现转向,这样,本公开实施例的转向系统1的结构紧凑,转向操控性好,工作稳定性好。
本公开还公开了一种润滑系统2,如图44所示,本公开实施例的润滑系统2具有上述任一种实施例描述的电动油泵总成1000,电动油泵总成1000可以将润滑油液泵送到需要润滑的系统内,这样,本公开实施例的润滑系统2的结构紧凑,工作稳定性好。
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或示例。

Claims (34)

  1. 一种电动油泵总成,其特征在于,所述电动油泵总成具有总进油口和总出油口,且包括:
    电机组件,所述电机组件具有与所述总进油口连通的液冷腔,所述液冷腔包括循环油道,所述循环油道位于所述电机组件的定子与所述电机组件的电机壳之间;
    油泵组件,所述油泵组件安装在所述电机组件的端部,且与所述电机组件的电机轴动力耦合连接,所述油泵组件的吸油口与所述循环油道连通,排油口与所述总出油口连通。
  2. 根据权利要求1所述的电动油泵总成,其特征在于,所述电机组件还包括:后端盖,所述后端盖封闭所述电机壳的后端以形成所述液冷腔的后腔体,所述循环油道为多个且沿周向间隔开设置,多个所述循环油道通过所述后腔体连通。
  3. 根据权利要求2所述的电动油泵总成,其特征在于,多个所述循环油道中的至少一个的油液从后向前流动并与所述吸油口相连。
  4. 根据权利要求3所述的电动油泵总成,其特征在于,多个所述循环油道中的一部分所述循环油道中的油液从后向前流动,另一部分所述循环油道中的油液从前向后流动,且油液流动方向不同的两种所述循环油道沿周向交错布置。
  5. 根据权利要求2-4中任一项所述的电动油泵总成,其特征在于,多个所述循环油道中的一个与所述总进油口相连以使油液通过多个所述循环油道中的所述一个流入所述液冷腔。
  6. 根据权利要求1-5中任一项所述的电动油泵总成,其特征在于,所述油泵组件安装在所述电机组件的前端盖上,所述定子与所述前端盖之间设有挡油圈。
  7. 根据权利要求1-6中任一所述的电动油泵总成,其特征在于,所述循环油道沿轴向延伸。
  8. 根据权利要求1-7中任一所述的电动油泵总成,其特征在于,所述油泵组件安装在所述电机组件的前端盖上,所述前端盖设有连通所述循环油道与所述吸油口的过油道。
  9. 根据权利要求8所述的电动油泵总成,其特征在于,所述前端盖具有沿轴向向所述电机组件的转子凸出的支撑凸缘,所述支撑凸缘用于支撑所述电机组件的轴承,所述支撑凸缘、所述电机轴、所述电机组件的轴承共同限定出与所述吸油口相连的吸油腔,所述过油道贯穿所述支撑凸缘以连通所述吸油腔与所述循环油道。
  10. 根据权利要求1-9中任一所述的电动油泵总成,其特征在于,所述油泵组件安装在所述电机组件的前端盖上,所述总进油口设在所述前端盖上,且与所述循环油道连通。
  11. 根据权利要求10所述的电动油泵总成,其特征在于,所述总进油口设在所述前端 盖的上方。
  12. 根据权利要求1-11中任一项所述的电动油泵总成,其特征在于,具有:油泵腔,所述油泵组件安装在所述电机组件的前端盖上,且所述油泵组件安装在所述油泵腔内,所述油泵腔内填充有油液。
  13. 根据权利要求12所述的电动油泵总成,其特征在于,所述油泵腔与所述总进油口连通,所述吸油口与所述油泵腔相连。
  14. 根据权利要求13所述的电动油泵总成,其特征在于,所述前端盖设有出油通道,所述出油通道的一端与所述油泵组件的排油口相连,另一端形成所述总出油口。
  15. 根据权利要求12-14中任一项所述的电动油泵总成,其特征在于,所述油泵腔与所述油泵组件的排油口相连且与所述总出油口连通。
  16. 根据权利要求15所述的电动油泵总成,其特征在于,所述前端盖设有出油通道,所述出油通道的一端与所述油泵腔相连,另一端形成所述总出油口。
  17. 根据权利要求15或16所述的电动油泵总成,其特征在于,所述油泵组件浮动支撑在所述前端盖上。
  18. 根据权利要求17所述的电动油泵总成,其特征在于,还包括:弹性件和定位件,所述定位件穿过所述油泵组件和所述前端盖,且与所述油泵组件间隙配合,所述弹性件与所述油泵组件接触以向所述油泵组件施加朝向所述电机组件的轴向预紧力。
  19. 根据权利要求18所述的电动油泵总成,其特征在于,所述定位件为螺栓,所述油泵组件的外周设有凸耳,所述凸耳上设有定位孔,所述螺栓贯穿所述定位孔且与所述前端盖螺纹连接,所述弹性件为弹簧且套设在所述螺栓外,所述弹簧弹性止抵在所述凸耳与所述螺栓的头部之间。
  20. 根据权利要求17-19中任一项所述的电动油泵总成,其特征在于,还包括:磁性件,所述磁性件安装在所述前端盖上,所述油泵组件的前盖板为铁磁性材料制成。
  21. 根据权利要求20所述的电动油泵总成,其特征在于,所述前盖板上设有凹槽,所述磁性件的至少部分凸出于所述前端盖且伸入所述凹槽,并与所述凹槽间隙配合。
  22. 根据权利要求17-21中任一项所述的电动油泵总成,其特征在于,所述油泵组件与所述前端盖之间通过定位单元预定位,且所述定位单元与所述油泵组件和所述前端盖中的至少一个沿径向间隙配合,所述油泵组件的后盖板和所述油泵腔的顶壁分别设有磁极方向相反的磁性件。
  23. 根据权利要求17-22中任一项所述的电动油泵总成,其特征在于,还包括:卡扣,所述卡扣连接在所述油泵组件与所述前端盖之间,且与所述前端盖间隙配合。
  24. 根据权利要求23所述的电动油泵总成,其特征在于,所述卡扣的一端与所述前端 盖固定连接,另一端设有与所述油泵组件的前盖板卡接的卡钩,且所述卡钩在轴向上对所述前盖板限位。
  25. 根据权利要求24所述的电动油泵总成,其特征在于,所述前盖板上设有卡接槽,所述卡扣贯穿所述卡接槽且与所述卡接槽间隙配合,所述卡钩的朝向所述前端盖的端面与所述前盖板间隙配合。
  26. 根据权利要求24或25所述的电动油泵总成,其特征在于,所述卡钩具有导向面,所述导向面沿所述前盖板的径向从内向外向远离所述前端盖的方向倾斜。
  27. 根据权利要求12-26中任一项所述的电动油泵总成,其特征在于,所述前端盖具有沿轴向向远离所述电机组件的方向延伸的环形凸台,所述环形凸台形成所述油泵腔的侧壁,所述油泵腔的顶壁与所述环形凸台通过螺纹紧固件相连。
  28. 根据权利要求12-27中任一项所述的电动油泵总成,其特征在于,还包括:隔音罩,所述隔音罩罩设在所述油泵腔的外壁面外。
  29. 根据权利要求12-28中任一项所述的电动油泵总成,其特征在于,还包括:低压罩,所述低压罩罩设在所述油泵腔的壁面外且限定出与所述总进油口连通的低压腔,所述低压罩与所述前端盖相连。
  30. 根据权利要求29所述的电动油泵总成,其特征在于,所述低压罩具有锥形周壁,且所述低压罩的内径从靠近所述总进油口到远离所述总进油口的方向逐渐变小。
  31. 根据权利要求12-30中任一项所述的电动油泵总成,其特征在于,所述油泵组件与所述前端盖之间夹设有密封圈。
  32. 根据权利要求1-31中任一项所述的电动油泵总成,其特征在于,所述电机组件和所述油泵组件横置。
  33. 一种转向系统,其特征在于,具有如权利要求1-32中任一项所述的电动油泵总成。
  34. 一种润滑系统,其特征在于,具有如权利要求1-32中任一项所述的电动油泵总成。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210285443A1 (en) * 2020-03-12 2021-09-16 Schwäbische Hüttenwerke Automotive GmbH Pump Insert And Pump Array Comprising Such a Pump Insert
CN113824248A (zh) * 2021-08-13 2021-12-21 浙江零跑科技股份有限公司 一种增程发电机总成系统的润滑及散热结构
CN114679001A (zh) * 2022-02-11 2022-06-28 浙江吉利控股集团有限公司 一种动力总成和车辆

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112112796A (zh) * 2019-06-19 2020-12-22 杭州三花研究院有限公司 电动泵
CN111030371B (zh) * 2019-12-18 2022-01-07 超音速智能科技(浙江)有限公司 一种单相电机
CN114709965A (zh) * 2022-04-02 2022-07-05 全兴精工集团有限公司 双源电机泵
CN115681067A (zh) * 2022-09-30 2023-02-03 北京精密机电控制设备研究所 一种集驱动控制功能同轴一体化伺服电机泵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1821566A (zh) * 2006-03-19 2006-08-23 曹宝军 一种适用含醇燃料的电动燃油泵
CN202009303U (zh) * 2011-01-28 2011-10-12 比亚迪股份有限公司 一种油泵电机
DE102012212423A1 (de) * 2012-07-16 2014-01-16 Mahle International Gmbh Flüssigkeitspumpe
CN204212886U (zh) * 2014-11-13 2015-03-18 温州市康松汽车零部件有限公司 带有侧向进油通道的二级增压电动燃油泵
CN105229306A (zh) * 2014-03-04 2016-01-06 日立汽车系统株式会社 电动油泵
JP5880842B2 (ja) * 2012-03-05 2016-03-09 株式会社ジェイテクト 電動オイルポンプ装置
JP5986021B2 (ja) * 2013-03-18 2016-09-06 日立オートモティブシステムズ株式会社 電動モータおよび電動オイルポンプ

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2142257A1 (de) * 1971-08-24 1973-03-01 Bosch Gmbh Robert Brennstoffoerderpumpe
US7285882B2 (en) * 2005-05-12 2007-10-23 Sullair Corporation Integrated electric motor driven compressor
CN101328882A (zh) * 2008-07-02 2008-12-24 燕山大学 异步斜盘轴向柱塞液压电机泵
WO2013172189A1 (ja) * 2012-05-18 2013-11-21 株式会社ヴァレオジャパン 電動圧縮機
CN103047134B (zh) * 2013-01-24 2016-08-17 兰州理工大学 一种气隙非浸油式液压电机叶片泵
DE102014013665B4 (de) * 2014-09-16 2022-05-19 Thomas Magnete Gmbh Pumpenbaukastensystem für eine elektromagnetisch betätigte Hubkolbenpumpe
CN204419616U (zh) * 2014-12-15 2015-06-24 比亚迪股份有限公司 油泵组件和具有其的车辆
CN204755288U (zh) * 2015-05-29 2015-11-11 马鞍山当涂发电有限公司 一种带视窗的立式油泵
CN205117647U (zh) * 2015-11-10 2016-03-30 贵州开磷集团股份有限公司 一种油泵与电机的连接结构
CN107867323B (zh) * 2016-09-28 2019-11-22 比亚迪股份有限公司 电机油泵总成、转向系统和车辆

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1821566A (zh) * 2006-03-19 2006-08-23 曹宝军 一种适用含醇燃料的电动燃油泵
CN202009303U (zh) * 2011-01-28 2011-10-12 比亚迪股份有限公司 一种油泵电机
JP5880842B2 (ja) * 2012-03-05 2016-03-09 株式会社ジェイテクト 電動オイルポンプ装置
DE102012212423A1 (de) * 2012-07-16 2014-01-16 Mahle International Gmbh Flüssigkeitspumpe
JP5986021B2 (ja) * 2013-03-18 2016-09-06 日立オートモティブシステムズ株式会社 電動モータおよび電動オイルポンプ
CN105229306A (zh) * 2014-03-04 2016-01-06 日立汽车系统株式会社 电动油泵
CN204212886U (zh) * 2014-11-13 2015-03-18 温州市康松汽车零部件有限公司 带有侧向进油通道的二级增压电动燃油泵

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US11725653B2 (en) * 2020-03-12 2023-08-15 Schwäbische Hüttenwerke Automotive GmbH Pump insert and pump array comprising such a pump insert
CN113824248A (zh) * 2021-08-13 2021-12-21 浙江零跑科技股份有限公司 一种增程发电机总成系统的润滑及散热结构
CN114679001A (zh) * 2022-02-11 2022-06-28 浙江吉利控股集团有限公司 一种动力总成和车辆
CN114679001B (zh) * 2022-02-11 2024-02-27 浙江吉利控股集团有限公司 一种动力总成和车辆

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