WO2019041953A1 - 电子油泵 - Google Patents

电子油泵 Download PDF

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Publication number
WO2019041953A1
WO2019041953A1 PCT/CN2018/090337 CN2018090337W WO2019041953A1 WO 2019041953 A1 WO2019041953 A1 WO 2019041953A1 CN 2018090337 W CN2018090337 W CN 2018090337W WO 2019041953 A1 WO2019041953 A1 WO 2019041953A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
pump
oil pump
area
electronic oil
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2018/090337
Other languages
English (en)
French (fr)
Inventor
卢建钢
吴志旺
殷炳玖
张凯
周裕斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Sanhua Research Institute Co Ltd
Original Assignee
Hangzhou Sanhua Research Institute Co Ltd
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 Hangzhou Sanhua Research Institute Co Ltd filed Critical Hangzhou Sanhua Research Institute Co Ltd
Priority to US16/642,850 priority Critical patent/US20200347838A1/en
Priority to EP18849856.2A priority patent/EP3677778A4/en
Priority to JP2020512029A priority patent/JP7414711B2/ja
Publication of WO2019041953A1 publication Critical patent/WO2019041953A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0096—Heating; Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/047—Cooling of electronic devices installed inside the pump housing, e.g. inverters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/20—Rotary pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/808—Electronic circuits (e.g. inverters) installed inside the machine

Definitions

  • the present invention relates to the field of vehicles, and more particularly to components of a vehicle lubrication system and/or a cooling system.
  • the electronic oil pump mainly provides a power source for the lubrication system and/or the cooling system of the vehicle.
  • the electronic oil pump includes a stator assembly.
  • the stator assembly generates heat during operation, and the accumulation of heat to a certain extent cannot be timely released, which will affect the performance of the stator assembly. Thereby reducing the service life of the electronic oil pump.
  • the object of the present invention is to provide an electronic oil pump, which is beneficial to heat dissipation of the stator assembly, thereby facilitating the improvement of the service life of the electronic oil pump.
  • an embodiment of the present invention adopts the following technical solutions:
  • An electronic oil pump includes a pump casing, a pump rotor assembly, a stator assembly, a motor rotor assembly, and an electric control panel, wherein the pump casing can form a pump cavity, the pump cavity including a first cavity and a second cavity, a pump rotor assembly is disposed in the first chamber, the stator assembly, the motor rotor assembly, and the electric control board are disposed in the second chamber, wherein the pump housing includes a first housing, the first housing The body includes a side wall including an inner surface and an outer surface, at least a portion of the inner surface being disposed in contact with an outer wall of at least a portion of the stator assembly, the outer surface being provided with or shaped with a first heat dissipating portion, In the circumferential direction of the electronic oil pump, at least a portion of the first heat dissipation portion covers at least a portion of the outer circumference of the stator assembly; this can facilitate heat dissipation of the stator assembly, thereby facilitating the improvement of the
  • An electronic oil pump includes a pump casing, a pump rotor assembly, a stator assembly, a motor rotor assembly, and an electric control panel, wherein the pump casing can form a pump cavity, the pump cavity including a first cavity and a second cavity, a pump rotor assembly is disposed in the first chamber, the stator assembly, the motor rotor assembly, and the electric control board are disposed in the second chamber, wherein the pump housing includes a first housing, the first housing The body includes a side wall including an inner surface and an outer surface, at least a portion of the inner surface being disposed in contact with an outer wall of at least a portion of the stator assembly, the outer surface being provided with or shaped with a first heat dissipation portion
  • the first housing includes a hollow portion, the hollow portion is formed with a hollow cavity, the stator assembly, the motor rotor assembly is disposed in the hollow cavity, the stator assembly includes a coil, and the coil includes a first top And a first bottom portion, the first top
  • FIG. 1 is a schematic perspective view showing an embodiment of an electronic oil pump of the present invention
  • FIG. 2 is a schematic structural view of an embodiment of the electronic oil pump of FIG. 1;
  • FIG. 3 is another schematic structural view of an embodiment of the electronic oil pump of FIG. 1;
  • FIG. 4 is a top plan view showing an embodiment of the electronic oil pump of FIG. 1;
  • Figure 5 is a top plan view showing the electronic oil pump of the first housing of Figure 1;
  • Figure 6 is a perspective view showing a first embodiment of the first housing of Figure 1;
  • FIG. 7 is a schematic cross-sectional structural view of the first housing when the first heat dissipation portion is not provided;
  • Figure 8 is a cross-sectional structural view of the first housing of Figure 6;
  • Figure 9 is a partially enlarged schematic view showing the portion A of the first housing of Figure 8.
  • Figure 10 is a cross-sectional structural view showing a second embodiment of the first housing of Figure 1;
  • Figure 11 is a cross-sectional structural view showing a third embodiment of the first housing of Figure 1;
  • Figure 12 is a cross-sectional structural view showing a fourth embodiment of the first housing of Figure 1;
  • Figure 13 is a perspective view showing the structure of the second housing of Figure 1;
  • Figure 14 is a front elevational view showing the second housing of Figure 13;
  • Figure 15 is a cross-sectional structural view of the second housing of Figure 13;
  • Figure 16 is a perspective view showing the structure of the electric control board of Figure 2;
  • Figure 17 is a cross-sectional structural view showing another embodiment of the electronic oil pump of the present invention.
  • the electronic oil pump in this embodiment is primarily capable of providing flow of power to the working medium of the vehicle lubrication system and/or the cooling system, in particular to provide flow of power to the lubrication system of the vehicle transmission system and/or the working medium of the cooling system.
  • the electronic oil pump 100 includes a pump casing, a motor rotor assembly 3, a stator assembly 4, a pump shaft 5, a pump rotor assembly 8 and an electric control board 6; the pump casing can form a pump cavity, the motor rotor assembly 3,
  • the stator assembly 4, the pump shaft 5, the pump rotor assembly 8, and the electric control board 6 are housed in a pump chamber, and the stator assembly 4 includes a stator core 41 and a coil 42.
  • the electric control board 6 changes the current in the coil 42 passing through the stator assembly 4 according to a certain law, thereby controlling the stator assembly 4 to generate a varying excitation magnetic field, and the motor rotor assembly 3 is rotated by the excitation magnetic field.
  • the motor rotor assembly 3 can drive the pump rotor assembly 8 to rotate.
  • the pump rotor assembly 8 rotates, the pump chamber volume changes, so that the working medium is forced out to the outflow port to generate flowing power.
  • the pump housing comprises a pump cover 1, a first housing 2 and a second housing 7, and the pump cover 11, the first housing 2 and the second housing 7 are relatively fixedly connected;
  • the pump casing can form a pump cavity, the pump cavity includes a first cavity 80 and a second cavity 90, the first cavity 80 can have a working medium flowing through, the pump rotor assembly 8 and the electronic control board 6 is disposed in the first cavity 80;
  • the second chamber 90 has no working medium passing through, and the stator assembly 4, the motor rotor assembly 3 and the electric control board 6 are disposed in the second chamber 90; such that the stator assembly 4 and the electric control board 6 are sufficiently separated from the working medium, thereby ensuring the stator assembly. And the performance of the electronic control board is not affected by the working medium.
  • the electronic oil pump 100 includes a pump rotor assembly 8, which includes an inner rotor 81 and an outer rotor 82.
  • the inner rotor 81 includes a plurality of external teeth
  • the outer rotor 82 includes a plurality of inner teeth.
  • a hydraulic chamber 801 is formed between the teeth of the outer rotor 82 and the outer teeth of the inner rotor 81.
  • the outer rotor 82 is sleeved on the outer circumference of the inner rotor 81, and the inner and inner rotors of the outer rotor 82 are partially disposed. A portion of the external teeth of 81 form an internal engagement.
  • the electronic oil pump includes an inlet port 11 and an outlet port 12 through which the working medium can enter the hydraulic chamber 801, and then the working medium can exit the hydraulic chamber 801 through the outlet port 12;
  • the inner rotor 81 rotates, part of the outer teeth of the inner rotor 81 mesh with a part of the inner teeth of the outer rotor 82, thereby driving the outer rotor 82 to rotate, and rotating the pump rotor 8 During the course of one revolution, the internal volume of the hydraulic chamber 801 changes.
  • the pump rotor 8 when the pump rotor 8 is rotated from the starting point to a certain angle, the volume in the hydraulic chamber 801 is gradually increased to form a partial vacuum, and the working medium is The inlet port 11 is sucked into the hydraulic chamber 801.
  • the pump rotor continues to rotate, the volume of the hydraulic chamber originally filled with the working medium is gradually reduced, and the working medium is squeezed, so that the working medium entering the hydraulic chamber 801 is pushed out to The outflow port 12 thus generates the power of the flow.
  • the pump cover 1 is fixedly connected to the first housing 2
  • the first housing 2 is fixedly connected to the second housing 7
  • the pump cover 1 and the first housing 2 are screwed or Bolt connection, such that the electronic oil pump is more convenient to disassemble and assemble, thereby facilitating the maintenance of the pump rotor assembly in the electronic oil pump.
  • the pump cover 1 and the first housing 2 can also be connected by other means, such as plugging,
  • the first housing 2 is fixedly connected to the second housing 7 , and specifically, the first housing 2 and the second housing 7 are connected by screws or bolts, so that the electronic oil pump is disassembled and assembled on the one hand.
  • the connection between the first housing 2 and the second housing 7 is more reliable, of course, the first housing 2 and the second housing 7 can also be inserted. Connect, snap or other connection methods.
  • FIG. 6 , FIG. 8 and FIG. 9 are schematic structural diagrams of a first embodiment of the first housing, and FIG. 7 is a schematic structural view of the first housing when the first heat dissipation portion is not disposed; A first embodiment of the first housing will be described.
  • the first housing 2 includes a side wall 21 including an inner surface 211 and an outer surface 212.
  • the outer surface 212 is provided with a first heat dissipating portion 26, in the circumferential direction of the electronic oil pump, at least a portion of the first heat dissipating portion 26 is covered on the outer circumference of at least a portion of the stator assembly 4; such that it is at least partially first in the axial direction of the electronic oil pump
  • the longitudinal distribution area of the heat dissipation portion 26 is disposed corresponding to the hollow cavity 221, which can facilitate heat dissipation of the stator assembly and the electronic control board, thereby facilitating the improvement of the service life of the electronic oil pump.
  • the first housing 2 includes a hollow portion 22, and the hollow portion 22 is formed with a hollow cavity 221.
  • the stator assembly and the motor rotor assembly of FIG. 2 are disposed in the hollow cavity 221, and the longitudinal distribution region of at least a portion of the first heat dissipation portion 26 is located and hollow.
  • the portion of the first housing 2 corresponding to the cavity 221 is configured such that at least a portion of the longitudinal distribution region of the first heat dissipation portion 26 and the first housing 2 corresponding to the hollow cavity 221 are at least partially correspondingly disposed, which is beneficial to the stator assembly and the electric device.
  • the hollow portion 22 includes a first surface 222 and a second surface 223, the first surface 222 is the top surface of the hollow portion 22, and the second surface 223 is the bottom surface of the hollow portion, in combination with FIG.
  • the face 222 is disposed closer to the pump rotor assembly 8 than the second face 223, defining a first reference face, the central axis of the first reference face coincides with the central axis of the first face 222, and the first reference face coincides with the first face 222 Defining a second reference surface, the central axis of the second reference surface coincides with the central axis of the second surface 223, and the second reference surface coincides with the second surface 223, in conjunction with FIG. 2 or FIG. 3, along the center of the electronic oil pump The direction of the axis, at least part of the first Distribution area 26 of the longitudinal portion located between the first reference plane and the second plane.
  • the coil 42 includes a first top portion 421 and a first bottom portion 422 that is closer to the pump rotor assembly 8 than the first bottom portion 422, along the central axis of the electronic oil pump 100, the first heat sink portion 26 includes a starting point 264 and a ending point 263 that is closer to the pump rotor assembly 8 of FIG. 3 than the ending point 263; along the direction of the central axis of the electronic oil pump 100, the first top 421 of the coil 42 of FIG.
  • the end point 263 of the first heat sink 26 is closer to the pump rotor assembly 8, i.e., the end point 263 of the first heat sink 26 is located below the first top 421 of the coil 42 of FIG.
  • FIG. 7 is a schematic structural view of the first housing when the first heat dissipating portion is not disposed on the outer surface, and defines a defining surface K.
  • the defining surface K is an outer surface on which the first heat dissipating portion 26 is not disposed.
  • the outer surface 212' corresponds to the defined surface K (indicated by the dashed line in Fig. 8) in Fig.
  • the first heat radiating portion 26 includes a plurality of convex portions 262 which are convex away from the central axis of the first casing 2.
  • the raised portion 262 is convexly disposed away from the outer surface 212, and the raised portion 262 is raised to be tangent to the defined surface K; such an arrangement is equivalent to peeling the first housing
  • the heat dissipation area of 2 is beneficial to the heat dissipation of the stator assembly and the electronic control board.
  • the protrusions 262 are spaced apart or continuously distributed along the central axis of the first housing 2 .
  • the first heat dissipation portion 26 further includes a plurality of recesses 261 , and the recesses 261 .
  • the outer surface 212 is recessed toward the central axis of the first housing 2, and the convex portion 262 and the concave portion 261 are disposed along the axial direction of the electronic oil pump; specifically, the convex portion 262 is along the central axis of the first housing 2
  • the interval distribution, the "space distribution” herein means that the concave portion 261 and the convex portion 262 are alternately disposed, that is, a convex portion 262 is disposed between the adjacent two concave portions 261, or two adjacent convex portions 262 are provided.
  • a recess 261 is disposed therebetween.
  • the recesses 261 are disposed along the axial direction of the electronic oil pump, so that the heat dissipation area can be maximized, so that the heat dissipation of the stator assembly 4 and the electric control board 6 in FIG. 2 can be facilitated.
  • the bosses 262 can also be continuously distributed along the central axis direction of the first casing 2, where "continuous distribution" means that the bosses 262 are connected end to end.
  • the protrusion height of the protrusion portion 262 is the same, and the wall thickness H1 of the first housing 2 at the corresponding protrusion portion 262 is greater than or equal to the protrusion height H3 of the protrusion portion 262.
  • the arrangement can ensure the mechanical strength of the side wall 21 of the first casing 2 at the convex portion 262; the wall thickness H2 of the first casing 2 corresponding to the concave portion 261 corresponding to the first heat radiating portion 26 is greater than or equal to
  • the recess depth 261 is 0.5 times the recess depth H3, so that the mechanical strength of the sidewall of the first housing 2 at the recess 261 can be ensured; specifically, the vertical distance between the inner surface 211 and the outer surface 212 is defined as the first distance H1, that is, the wall thickness corresponding to the first housing 2 at the corresponding convex portion 262, the concave portion 261 includes a head portion 2611 and a tail portion 2612, and the tail portion 2612 is disposed closer to the central axis of the first housing 2 than the head portion 2611, defining the tail portion
  • the vertical distance between the 2612 and the inner surface 211 is the second distance H2, and the ratio of the second distance H2 to the first distance H1 is greater than or equal
  • the raised portion 262 or recess 261 at the starting point 264 of the first heat sink portion 26 is smoothly transitionally connected to the outer surface 212, and the raised portion 262 is located at the starting point 264 of the first heat sink portion 26.
  • the angle between the side wall of the recess 261 and the outer surface 212 is greater than 90°, such that the transition has no sharp corners, thereby facilitating the reduction of the stress concentration at the transition; the convexity at the end point 263 of the first heat sink 26
  • the rising portion 262 or the recess 261 is smoothly connected to the outer surface, and the angle between the side wall of the convex portion 262 or the concave portion 261 at the end point 263 of the first heat radiating portion 26 and the outer surface is greater than 90°; There is no sharp corner, which helps to reduce the stress concentration at the transition.
  • the stator assembly 4 includes a stator core 41 to be adjacent to one side of the stator core 41 of the pump rotor assembly 8 to be adjacent to the side of the stator core 41 of the electric control board 6.
  • the starting point 264 of the first heat radiating portion 26 is located above the stator core 41 in FIG. 3, and the end point 263 of the first heat radiating portion 26 is located at the stator core 41.
  • Second or less; this arrangement is such that the first heat radiating portion 26 is disposed as much as possible around the stator core 41, thereby facilitating heat dissipation of the stator assembly 4.
  • the first housing 2 includes a second top portion 23 and a second bottom portion 24, in conjunction with Figure 2 or Figure 3, the second top portion 23 is closer to the pump rotor assembly 8 than the second bottom portion 24, in the electronic oil pump
  • the stator assembly 4 is at least partially overlapped with the first heat dissipating portion 26, that is, at least a portion of the first heat dissipating portion 26 covers the outer circumference of the portion of the stator assembly 4, and at least a portion of the first heat dissipating portion along the direction of the central axis of the electronic oil pump
  • the longitudinal distribution area of 26 is located between the second top portion 23 and the second bottom portion 24, such that the heat generated by the coil 42 during operation of the stator assembly 4 of FIG.
  • the concave portion 261 located at the starting point 264 of the first heat dissipating portion 26 is a first concave portion, and the first concave portion is located above the first top portion 421 of the coil 42.
  • the convex portion 262 may be located at the starting point 264;
  • the recess at the end point 263 of 26 is an end recess, and the end recess is located below the first top portion 421 of the coil 42.
  • the boss portion may be located at the end point, such that it is disposed along the axial direction of the electronic oil pump.
  • Partial depression And at least a partial longitudinal axial projection area of the axial projection of the longitudinal region of the stator assembly between the end of the recess portion superposed to facilitate cooling of the stator assembly.
  • the vertical distance L between the central axis of the end recess and the central axis of the first recess is greater than or equal to the vertical distance H4 between the first top 421 and the first bottom 422 of the coil 42 in FIG. 26 axially covers the area of the coil 42, so that the heat generated by the coil in FIG. 3 can be uniformly distributed through the first heat dissipating portion, thereby improving heat dissipation efficiency.
  • the first housing 2 is made of a metal material, and the first housing 2 further includes a first groove 27 and a second groove 28, and the first heat dissipation portion 26 is located at the first groove 27 and the second groove 28.
  • the electronic oil pump further includes a first annular seal ring 30 and a second annular seal ring 40.
  • the first annular seal ring 30 is sleeved on the first groove 27, and the second annular seal ring 40 is sleeved on the second.
  • the groove 28, the first heat dissipation portion 26 is located between the first annular seal ring 30 and the second annular seal ring 40; when the electronic oil pump is installed in the automobile transmission system, the first annular seal ring 30 and the second annular seal are disposed
  • the ring 40 is advantageous for preventing the high-pressure oil medium from entering the region where the first heat-dissipating portion 26 belongs. At this time, the cold medium can be externally connected to the first heat-dissipating portion 26, thereby making the heat dissipation of the coil more efficient. Referring to FIGS.
  • the concave portion 261 and the convex portion 262 are circumferentially disposed along the circumferential direction of the outer surface 21 of the first casing 2, and the concave portion 261 and the convex portion 262 of the first heat radiating portion 26 are along the first casing 2
  • the central axis array is distributed or evenly distributed. The arrangement is advantageous for increasing the area of the first heat dissipating portion, thereby facilitating heat dissipation of the coil.
  • the concave portion 261 and the convex portion 262 of the first heat dissipating portion 26 are along the first A circumference is provided in the circumferential direction of the outer surface of a casing 2.
  • the concave portion 261 and the convex portion 262 of the first heat radiating portion 26 may also be disposed along the circumferential direction of the outer surface 21 of the first casing 2. In a circle.
  • the first housing 2 is longitudinally cut in the axial direction to obtain a longitudinal section.
  • the shape of the first heat dissipation portion 26 is substantially wavy.
  • the shape of the first heat dissipation portion 26 can also be It is a waveform composed of other shapes such as a rectangle, a triangle, or a trapezoid.
  • the first housing of the second embodiment is labeled as the first housing 2a, Other labels are given a as a suffix; the first housing of the third embodiment is labeled as the first housing 2b, and the other labels are all added with b as a suffix; the first housing of the fourth embodiment is labeled as the first housing. 2c, other labels are added with c as a suffix.
  • Fig. 10 is a schematic structural view of a second embodiment of the first housing, and the structure of the second embodiment of the first housing will be described below.
  • the first housing 2a includes a first heat dissipation portion 26a defining a projected area of the first heat dissipation portion 26a toward the outer surface 212a of the corresponding side wall 21a as a first area, defining the first heat dissipation portion 26a.
  • the surface area is the second area, the second area is greater than or equal to the first area; defining a defining surface K', the defining surface K' is the outer surface of the first heat dissipating portion 26a, and the first area is the surface area defining the surface K'.
  • the first heat dissipating portion 26a includes a plurality of convex portions 262a, and the convex portion 262a is convex away from the defining surface K'
  • the present embodiment does not provide the first heat dissipating portion 26a directly on the outer surface of the light by peeling, thereby increasing the heat dissipating area of the first casing 2, which is advantageous.
  • the heat dissipation of the stator assembly and the electronic control board; other features of this embodiment can be referred to the first embodiment of the first housing, which will not be described herein.
  • Fig. 11 is a schematic view showing the structure of a third embodiment of the first casing, and the structure of the third embodiment of the first casing will be described below.
  • the first housing 2b includes a first heat dissipating portion 26b.
  • the first heat dissipating portion 26b includes a plurality of protrusions 262b, and the protrusions 262b are convexly disposed away from the outer surface 212b.
  • the portion 26b includes only the convex portion 262b, and does not include the concave portion, which also facilitates relatively increasing the area of the outer surface, thereby facilitating relatively increasing the heat dissipation area of the first heat dissipation portion 26b, thereby facilitating the stator assembly and the electric control board.
  • first embodiment of the first housing which will not be described herein.
  • Fig. 12 is a schematic view showing the structure of a fourth embodiment of the first casing, and the structure of the fourth embodiment of the first casing will be described below.
  • the first housing 2c includes a first heat dissipation portion 26c.
  • the first heat dissipation portion 26c includes a plurality of recesses 261c.
  • the recess portion 261c is recessed from the outer surface 212c toward the central axis of the first housing 2c.
  • the recesses 261c are continuously disposed in the axial direction of the first casing 2c, where "continuously disposed" means that the adjacent two recesses 261c are connected end to end; the first casing 2c corresponds to the recess 261c corresponding to the first heat radiating portion 26c.
  • the wall thickness is greater than or equal to 0.5 times the depth of the recess of the recess 261c; in this embodiment, the first heat radiating portion 26c includes only the recess 261c, and does not include the boss, as in other embodiments of the first housing. It is also advantageous to relatively increase the area of the outer surface, thereby facilitating relatively increasing the heat dissipation area of the first heat dissipating portion, thereby facilitating heat dissipation of the stator assembly and the electric control board; other features of the embodiment may refer to the first housing. An embodiment will not be described here.
  • the electronic oil pump further includes a second housing 7, and the second housing 7 is fixedly coupled to the first housing 2, see FIGS. 13 to 15, and FIGS. 13 to 15 are structures of the second housing.
  • the second housing includes a plurality of protruding ribs 74.
  • the protruding ribs 74 are fixedly connected or integrally formed with the second housing 7.
  • the protruding ribs 74 are integrally molded with the second housing 7;
  • the protruding ribs 74 are convexly disposed away from the first housing 2;
  • the second housing 7 includes a connecting portion 76. Referring to FIG. 3, the connecting portion 76 is convex away from the first housing 2.
  • the electric control board 6 includes the substrate 61 and the heat-generating electronic component. 62, the heat-generating electronic component 62 is disposed on the substrate 61, and the area defined by the heat-generating electronic component 62 on the substrate 61 is the second area, and the area of the second area is the fourth area, the first area and the second area.
  • the regions are correspondingly arranged, and the first region and the second region are vertically projected to the electric control board 6, and at least a portion of the first region is vertically projected.
  • the second housing 7 further includes a first side wall 75.
  • the protruding ribs 74 are disposed substantially parallel to the first side wall 75.
  • substantially parallel means the first side wall 75.
  • the parallelism of the ribs 74 is in the range of 0.5 mm, so that the arrangement can ensure that the ribs 74 are disposed as much as possible on the second casing, thereby increasing the heat dissipation area and facilitating heat dissipation of the circuit board.
  • the protruding ribs 74 can also be disposed at an angle with the first side wall 75.
  • the lateral cross-sectional shape of the protruding ribs 74 is a rectangle, and of course, the transverse cross-sectional shape of the protruding ribs can also be other shapes. Other shapes such as trapezoids, triangles, and arcs.
  • FIG. 17 is a schematic structural view of another embodiment of an electronic oil pump; the electronic oil pump 100' includes a pump casing, and the pump casing includes a pump cover 1, a first casing 2 and a second casing 7, and a pump cover 1.
  • the first housing 2 and the second housing 7 are relatively fixedly connected;
  • the pump housing can form a pump chamber, and the pump chamber includes a first chamber 80 and a second chamber 90, and a working medium can flow through the first chamber 80, the pump
  • the rotor assembly 8 and the electric control board 6 are disposed in the first cavity 80;
  • the second cavity 90 has a working medium passing through, the stator assembly 4, the motor rotor assembly 3 and the electric control board 6 are disposed in the second cavity 90;
  • the electronic oil pump 100' further includes
  • the pump shaft 5', the pump shaft 5' includes a shaft hole 50 capable of communicating the working medium of the first chamber 80 and the second chamber 90, such that the working medium in the first chamber can flow into the second through the shaft hole 50.
  • the second cavity of the electronic oil pump of the present embodiment has a working medium passing through, so that the working medium in the second cavity can also take away part of the stator assembly 4 in operation.
  • the heat generated, thereby facilitating heat dissipation of the stator assembly; the embodiment thereof Feature may refer to a first embodiment of an electronic pump, this is not enumerate.

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Abstract

一种电子油泵（100），包括泵外壳、泵转子组件（8）、定子组件（4）、电机转子组件（3）以及电控板（6），泵外壳形成泵内腔，泵内腔包括第一腔（80）和第二腔（90），泵转子组件（8）设置于第一腔（80），定子组件（4）、电机转子组件（3）以及电控板（6）设置于第二腔（90），泵外壳包括第一壳体（2），第一壳体（2）包括一侧壁（21），侧壁（21）包括内表面（211）和外表面（212），至少部分内表面（211）与至少部分定子组件（4）的外壁接触设置，外表面（212）设置有第一散热部（26），至少部分第一散热部（26）罩于至少部分定子组件（4）的外周；这样设置有利于定子组件（4）的散热，有利于提高电子油泵（100）的使用寿命。

Description

电子油泵
本申请要求于2017年08月31日提交中国专利局、申请号为201710770143.4、发明名称为“电子油泵”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
本发明涉及一种车辆领域，尤其涉及车辆润滑系统和/或冷却系统的零部件。
背景技术
随着车辆性能向着更安全、更可靠、更稳定、全自动智能化和环保节能方向发展，电子油泵被大量运用于车辆润滑系统和/或冷却系统中，并能很好的满足市场的要求。
电子油泵主要为车辆的润滑系统和/或冷却系统提供动力源，电子油泵包括定子组件，通常定子组件在工作时会产生热量，热量累计到一定程度无法及时散出将会影响定子组件的性能，从而降低电子油泵的使用寿命。
发明内容
本发明的目的在于提供一种电子油泵，有利于定子组件的散热，从而有利于提高电子油泵的使用寿命。
为实现上述目的，本发明的一种实施方式采用如下技术方案：
一种电子油泵，包括泵外壳、泵转子组件、定子组件、电机转子组件以及电控板，所述泵外壳能够形成泵内腔，所述泵内腔包括第一腔和第二腔，所述泵转子组件设置于第一腔，所述定子组件、所述电机转子组件以及所述电控板设置于第二腔，其特征在于：所述泵外壳包括第一壳体，所述第一壳体包括一侧壁，所述侧壁包括内表面和外表面，至少部分所述内表面与至少部分所述定子组件的外壁接触设置，所述外表面设置有或成形有第一散热部，在所述电子油泵的周向上，至少部分所述第一散热部罩于至少部分所述定子组件的外周；这样能够有利于定子组件的散热，从而有利于提高电子油泵的使用寿命。
一种电子油泵，包括泵外壳、泵转子组件、定子组件、电机转子组件以及电控板，所述泵外壳能够形成泵内腔，所述泵内腔包括第一腔和第二腔，所述泵转子组件设置于第一腔，所述定子组件、所述电机转子组件以及所述电控板设置于第二腔，其特征在于：所述泵外壳包括第一壳体，所述第一壳体包括一侧壁，所述侧壁包括内表面和外表面，至少部分所述内表面与至少部分所述定子组件的外壁接触设置，所述外表面设置有或成形有第一散热部，所述第一壳体包括一中空部，所述中空部成形有中空腔，所述定子组件、所述电机转子组件设置于所述中空腔，所述定子组件包括线圈，所述线圈包括第一顶部和第一底部，所述第一顶部比所述第一底部更靠近所述泵转子组件，沿着所述电子油泵的中心轴线的方向，所述第一散热部包括起始点和终止点，所述起始点比所述终止点更靠近所述泵转子组件；沿着所述电子油泵的中心轴线的方向，所述第一顶部比所述第一散热部的所述终止点更靠近所述泵转子组件；这样能够有利于定子组件的散 热，从而有利于提高电子油泵的使用寿命。
附图说明
图1是本发明电子油泵的一种实施方式的立体结构示意图；
图2是图1中电子油泵的一种实施方式的一个结构示意图；
图3是图1中电子油泵的一种实施方式的另一个结构示意图；
图4是图1中电子油泵的一种实施方式的俯视结构示意图；
图5是未装配图1中第一壳体的电子油泵的俯视结构示意图；
图6是图1中第一壳体的第一种实施方式的一个立体结构示意图；
图7是未设置第一散热部时第一壳体的一个剖面结构示意图；
图8是图6中第一壳体的一个剖面结构示意图；
图9是图8中第一壳体的A部的局部放大结构示意图；
图10是图1中第一壳体的第二种实施方式的一个剖面结构示意图；
图11是图1中第一壳体的第三种实施方式的一个剖面结构示意图；
图12是图1中第一壳体的第四种实施方式的一个剖面结构示意图；
图13是图1中第二壳体的一个立体结构示意图；
图14是图13中第二壳体的一个正视结构示意图；
图15是图13中第二壳体的一种剖面结构示意图；
图16是图2中电控板的一个立体结构示意图；
图17是本发明电子油泵的另一种实施方式的一个剖面结构示意图。
具体实施方式
下面结合附图和具体实施例对本发明作进一步说明：
本实施例中的电子油泵主要能够为车辆润滑系统和/或冷却系统的工作介质提供流动的动力，具体能够为车辆传动系统中的润滑系统和/或冷却系统的工作介质提供流动的动力。
参见图1至图3，电子油泵100包括泵外壳、电机转子组件3、定子组件4、泵轴5、泵转子组件8以及电控板6；泵外壳能够形成泵内腔，电机转子组件3、定子组件4、泵轴5、泵转子组件8以及电控板6容置于泵内腔，定子组件4包括定子铁芯41和线圈42。电子油泵100工作时，电控板6通过控制通过定子组件4的线圈42中的电流按照一定的规律变化，从而控制定子组件4产生变化的激励磁场，电机转子组件3在激励磁场的作用下转动，电机转子组件3能够带动泵转子组件8转动，泵转子组件8转动时，泵内腔容积发生变化，使得工作介质被压出至出流口从而产生流动的动力。
参见图1至图3，本实施例中，泵外壳包括泵盖1、第一壳体2和第二壳体7，泵盖11、第一壳体2以及第二壳体7相对固定连接；泵外壳能够形成泵内腔，泵内腔包括第一腔80和第二腔90，第一腔80内能够有工作介质流过，泵转子组件8和电控板6设置于第一腔80；第二腔90无工作介质通过，定子组件4、电机转子组件3和电控板6设置于第二腔90；这样设置使定子组件4和电控板6与工作介质充分分开，从而保证定子组件 和电控板的性能不会受到工作介质的影响。
参见图2和图5，本实施例中，电子油泵100包括泵转子组件8，泵转子组件8包括内转子81和外转子82，内转子81包括多个外齿，外转子82包括多个内齿，外转子82的内齿和内转子81的外齿之间形成有液压腔801，本实施例中，外转子82套设于内转子81的外周，外转子82的部分内齿与内转子81的部分外齿形成内啮合。再参见图1至图5，电子油泵包括进流口11和出流口12，工作介质能够通过进流口11进入液压腔801，然后工作介质能够通过出流口12离开液压腔801；由于内转子81与外转子82之间存在一定的偏心距，内转子81在转动时，内转子81的部分外齿与外转子82的部分内齿啮合，从而带动外转子82转动，在泵转子8旋转一圈的过程中，液压腔801内容积发生变化，具体地，当泵转子8从起始处转动到某一角度时，液压腔801内的容积逐渐增大从而形成局部真空，工作介质就从进流口11被吸入至液压腔801，当泵转子继续转动时，原来充满工作介质的液压腔容积逐渐减小，工作介质受到挤压，从而使得进入液压腔801内的工作介质被压出至出流口12从而产生流动的动力。
参见图1至图3，泵盖1与第一壳体2固定连接，第一壳体2与第二壳体7固定连接；本实施例中，泵盖1与第一壳体2通过螺钉或螺栓连接，这样设置使电子油泵的拆装更加方便，从而有利于电子油泵中泵转子组件的维修，当然泵盖1与第一壳体2之间也可以通过其他的方式连接，譬如插接、卡接等方式；第一壳体2与第二壳体7固定连接，具体地，第一壳体2与第二壳体7通过螺钉或螺栓连接，这样设置一方面使电子油泵的拆 装更加方便，从而有利于电子油泵中电控板的维修，另一方面使第一壳体2与第二壳体7的连接更可靠，当然第一壳体2与第二壳体7也可以通过插接、卡接或等其他的连接方式。
参见图6至图9，图6、图8以及图9为第一壳体的第一种实施方式的结构示意图，图7为未设置第一散热部时第一壳体的结构示意图；以下将对第一壳体的第一种实施方式进行描述。
参见图6至图9，第一壳体2包括一侧壁21，侧壁21包括内表面211和外表面212，结合图2，至少部分内表面211与至少部分定子组件4的外壁接触设置，外表面212设置有第一散热部26，在电子油泵的周向上，至少部分第一散热部26罩于至少部分定子组件4的外周；这样设置使得在电子油泵的轴向上，至少部分第一散热部26的纵向分布区域与中空腔221对应设置，这样能够有利于定子组件和电控板的散热，从而有利于提高电子油泵的使用寿命。第一壳体2包括一中空部22，中空部22成形有中空腔221，图2中的定子组件、电机转子组件设置于中空腔221，至少部分第一散热部26的纵向分布区域位于与中空腔221对应的第一壳体2的部分，这样设置能够使得至少部分第一散热部26的纵向分布区域与与中空腔221对应的第一壳体2至少部分对应设置，有利于定子组件和电控板的散热；具体地，中空部22包括第一面222和第二面223，第一面222即中空部22的顶面，第二面223即中空部的底面，结合图2，第一面222比第二面223更靠近泵转子组件8设置，定义一第一基准面，第一基准面的中心轴线与第一面222的中心轴线重合，且第一基准面与第一面222重合，定义一第二基准面，第二基准面的中心轴线与第二面223的中心轴线重合，且第二 基准面与第二面223重合，结合图2或图3，沿着电子油泵的中心轴线的方向，至少部分第一散热部26的纵向分布区域位于第一基准面和第二基准面之间。
参见图3和图8，线圈42包括第一顶部421和第一底部422，第一顶部421比第一底部422更靠近泵转子组件8，沿着电子油泵100的中心轴线方向，第一散热部26包括起始点264和终止点263，起始点264比终止点263更靠近图3中的泵转子组件8；沿着电子油泵100的中心轴线的方向，图3中线圈42的第一顶部421比第一散热部26的终止点263更靠近泵转子组件8，即第一散热部26的终止点263位于图3中线圈42的第一顶部421的下方。
参见图8，定义第一散热部26向对应的侧壁21的外表面212的投影面积为第一面积，定义第一散热部26的表面积为第二面积，第二面积大于等于第一面积；再参见图7，图7为外表面未设置第一散热部时第一壳体的结构示意图，定义一定义面K,定义面K为未设置第一散热部26的外表面，将图7中的外表面212’对应至图8中即得到定义面K(图8虚线处),第一散热部26包括多个凸起部262，凸起部262向远离第一壳体2的中心轴线凸出设置，具体地，凸起部262远离外表面212凸出设置，且凸起部262凸起至与定义面K相切；这样设置相当于以去皮的方式，增大了第一壳体2的散热面积，从而有利于定子组件和电控板的散热。
凸起部262沿着第一壳体2的中心轴线方向间隔分布或连续分布，具体地，参见图8和图9，本实施例中，第一散热部26还包括多个凹部261，凹部261自外表面212向第一壳体2的中心轴线凹陷设置，凸起部262与 凹部261沿电子油泵的轴向分布设置；具体地，凸起部262沿着第一壳体2的中心轴线方向间隔分布，这里的“间隔分布”是指凹部261和凸起部262交替设置，即相邻的两个凹部261之间设置有一个凸起部262，或相邻的两个凸起部262之间设置有一个凹部261，此时，凹部261沿电子油泵的轴向间隔设置，这样设置可以最大程度地增大散热面积，从而能够有利于图2中定子组件4和电控板6的散热，从而有利于提高电子油泵的使用寿命；当然凸起部262还可以沿着第一壳体2的中心轴线方向连续分布，这里的“连续分布”是指凸起部262的首尾相连。
参见图8和图9，本实施例中，凸起部262的凸起高度相同，第一壳体2在对应凸起部262处所对应的壁厚H1大于等于凸起部262的凸起高度H3的1.5倍，这样设置能够保证第一壳体2的侧壁21在凸起部262处的机械强度；第一壳体2在对应第一散热部26的凹部261处所对应的壁厚H2大于等于凹部261的凹陷深度H3的0.5倍，这样设置能够保证第一壳体2的侧壁在凹部261处的机械强度；具体地，定义内表面211与外表面212之间的垂直距离为第一距离H1，即第一壳体2在对应凸起部262处所对应的壁厚，凹部261包括头部2611和尾部2612，尾部2612比头部2611更靠近第一壳体2的中心轴设置，定义尾部2612与内表面211的垂直距离为第二距离H2，第二距离H2与第一距离H1的比值大于等于三分之一，这样设置能够保证第一壳体2侧壁21在第一散热部26处的强度，从而使第一壳体的侧壁因为机械强度不足而发生断裂等。
参见图8和图9，位于第一散热部26的起始点264处的凸起部262或凹部261与外表面212平滑过渡连接，位于第一散热部26的起始点264 处的凸起部262或凹部261的侧壁与外表面212的夹角大于90°，这样设置使得过渡处无尖角，从而有利于减小过渡处的应力集中；位于第一散热部26的终止点263处的凸起部262或凹部261与外表面平滑过渡连接，位于第一散热部26的终止点263处的凸起部262或凹部261的侧壁与外表面的夹角大于90°；这样设置使得过渡处无尖角，从而有利于减小过渡处的应力集中。
参见图2、图3和图8，定子组件4包括定子铁芯41，以靠近泵转子组件8的定子铁芯41的一侧为上，以靠近电控板6的定子铁芯41的一侧为下，沿第一壳体2的轴向，第一散热部26的起始点264位于图3中定子铁芯41的上方，第一散热部26的终止点263位于定子铁芯41的三分之二以下；这样设置使得第一散热部26尽可能多地围绕定子铁芯41设置，从而有利于定子组件4的散热。
参见图6至图9，第一壳体2包括第二顶部23和第二底部24，结合图2或图3，第二顶部23比第二底部24更靠近泵转子组件8，在电子油泵的轴向，定子组件4与第一散热部26至少部分重叠设置，即至少部分第一散热部26罩于部分定子组件4的外周，沿着电子油泵的中心轴线的方向，至少部分第一散热部26的纵向分布区域位于第二顶部23和第二底部24之间，这样设置可以保证图2中的定子组件4在工作时线圈42所产生的热量能尽快通过第一散热部26散出；定义位于第一散热部26的起始点264处的凹部261为首凹部，首凹部位于线圈42的第一顶部421的上方，当然也可以是凸起部262位于起始点264处；定义位于第一散热部26的终止点263处的凹部为末凹部，末凹部位于线圈42的第一顶部421的下方，当然 也可以是凸起部位于终止点处，这样设置使得沿着电子油泵的轴向，至少有部分首凹部和末凹部之间的纵向区域的轴向投影与定子组件的至少部分纵向区域的轴向投影重合，从而有利于定子组件的散热。参见图8，末凹部的中心轴线与首凹部的中心轴线之间的垂直距离L大于等于图3中线圈42的第一顶部421至第一底部422之间的垂直距离H4，即第一散热部26轴向上罩住线圈42的区域，这样设置可以保证图3中的线圈所产生的热量都能通过第一散热部均匀散出，从而提高散热效率。
参见图8，第一壳体2为金属材料，第一壳体2还包括第一沟槽27和第二沟槽28，第一散热部26位于第一沟槽27和第二沟槽28之间，结合图2，电子油泵还包括第一环形密封圈30和第二环形密封圈40，第一环形密封圈30套设于第一沟槽27，第二环形密封圈40套设于第二沟槽28，第一散热部26位于第一环形密封圈30和第二环形密封圈40之间；当电子油泵安装至汽车传动系统中时，设置的第一环形密封圈30和第二环形密封圈40有利于防止高压油介质进入第一散热部26所属区域，此时可在外部接入冷媒介质与第一散热部26接触，从而使线圈的散热变得更高效。参见图6至图10，凹部261和凸起部262沿第一壳体2的外表面21的圆周方向周向设置，第一散热部26的凹部261和凸起部262沿第一壳体2的中心轴阵列分布或均匀分布，这样设置有利于增大第一散热部的面积，从而有利于线圈的散热，本实施例中，第一散热部26的凹部261和凸起部262沿着第一壳体2的外表面的圆周方向上均设置了一圈，当然，第一散热部26的凹部261和凸起部262也可以沿第一壳体2的外表面21的圆周方向上设置少于一圈。
参见图8，将第一壳体2沿轴向纵向剖切得到一纵向剖切面，本实施例中，第一散热部26的形状大致成波浪形，当然，第一散热部26的形状也可以为由矩形、三角形或梯形等其他形状的组成的波形。
以下将对第一壳体的其他三种实施方式的结构进行阐述；为了方便描述其他三种实施方式的第一壳体，第二种实施方式的第一壳体标记为第一壳体2a，其他标号均加a作为后缀；第三种实施方式的第一壳体标记为第一壳体2b，其他标号均加b作为后缀；第四种实施方式的第一壳体标记为第一壳体2c，其他标号均加c作为后缀。
参见图10，图10为第一壳体的第二种实施方式的结构示意图，以下将对第一壳体的第二种实施方式的结构进行描述。
参见图7和图10，第一壳体2a包括第一散热部26a,定义第一散热部26a向对应的侧壁21a的外表面212a的投影面积为第一面积，定义第一散热部26a的表面积为第二面积，第二面积大于等于第一面积；定义一定义面K’,定义面K’为未设置第一散热部26a的外表面,第一面积即为定义面K’的表面积，将图7中的外表面212’对应至图10中得到定义面K’(图11虚线处),第一散热部26a包括多个凸起部262a，凸起部262a向远离定义面K’凸出设置；相较于第一种实施方式，本实施方式不是通过去皮的方式而是直接在光的外表面上设置第一散热部26a，从而增加第一壳体2的散热面积，有利于定子组件和电控板的散热；本实施例的其他特征可参考第一壳体的第一种实施方式，在此就不一一赘述了。
参见图11，图11为第一壳体的第三种实施方式的结构示意图，以下将对第一壳体的第三种实施方式的结构进行描述。
参见图11，第一壳体2b包括第一散热部26b,本实施例中，第一散热部26b包括多个凸起部262b,凸起部262b向远离外表面212b凸出设置，凸起部262b沿第一壳体2b的轴向连续设置，这里的“连续设置”是指相邻的两个凸起部212b的首尾相连；本实施例中，凸起部262b的凸起高度相同，且第一壳体2在对应凸起部262b处所对应的壁厚大于等于凸起部262b的凸起高度的1.5倍；与第一壳体的其他实施方式相比，本实施例中，第一散热部26b只包括凸起部262b，而不包括凹部，这样同样也有利于相对增加外表面的面积，从而有利于相对增大第一散热部26b的散热面积，进而有利于定子组件和电控板的散热；本实施例的其他特征可参考第一壳体的第一种实施方式，在此就不一一赘述了。
参见图12，图12为第一壳体的第四种实施方式的结构示意图，以下将对第一壳体的第四种实施方式的结构进行描述。
参见图12，第一壳体2c包括第一散热部26c,本实施例中，第一散热部26c包括多个凹部261c,凹部261c自外表面212c向第一壳体2c的中心轴线凹陷设置，凹部261c沿第一壳体2c的轴向连续设置，这里的“连续设置”是指相邻的两个凹部261c的首尾相连；第一壳体2c在对应第一散热部26c的凹部261c处所对应的壁厚大于等于凹部261c的凹陷深度的0.5倍；与第一壳体的其他实施方式相比，本实施例中，第一散热部26c只包括凹部261c，而不包括凸起部，这样同样也有利于相对增加外表面的面积，从而有利于相对增大第一散热部的散热面积，进而有利于定子组件和电控板的散热；本实施例的其他特征可参考第一壳体的第一种实施方式，在此就不一一赘述了。
参见图1至图3，电子油泵还包括第二壳体7，第二壳体7与第一壳体2固定连接，参见图13至图15，图13至图15为第二壳体的结构示意图，第二壳体包括多个凸起筋74，凸起筋74与第二壳体7固定连接或一体设置，本实施例中，凸起筋74与第二壳体7一体注塑成型；结合图3，凸起筋74向远离第一壳体2的方向凸出设置；第二壳体7包括一接插部76，结合图3，接插部76向远离第一壳体2的方向凸出设置；定义凸起筋74覆盖在第二壳体7上的的区域为第一区域，第一区域的面积为第三面积，参见图16，电控板6包括基板61和发热电子元器件62，,发热电子元器件62设置于基板61上，定义发热电子元器件62覆盖在基板61上的区域为第二区域，第二区域的面积为第四面积，第一区域与所述第二区域相互对应设置，将第一区域和第二区域向电控板6垂直投影，至少部分第一区域的垂直投影与至少部分第二区域的垂直投影重叠设置，第三面积大于等于第四面积；这样设置可以充分保证设置在基板61的发热电子元器件62所产生的热量在短时间内能够通过凸起筋及时散出，从而减少发热电子元器件所产生的热量对电控板性能的影响。
参见图14，第二壳体7还包括第一侧壁75，本实施例中，凸起筋74与第一侧壁75大致平行设置，这里的“大致平行”是指以第一侧壁75为基准面，凸起筋74的平行度在0.5mm范围内，这样设置可以保证在第二壳体上尽可能多地设置凸起筋74，从而增大散热面积，有利于电路板的散热，当然，凸起筋74也可以与第一侧壁75成一定的角度设置；本实施例中，凸起筋74的横向截面形状为矩形，当然凸起筋的横向截面形状也可以为其他形状，譬如梯形、三角形、弧形等其他形状。
参见图17，图17为电子油泵的另一种实施方式的结构示意图；电子油泵100’包括泵外壳，泵外壳包括泵盖1、第一壳体2和第二壳体7，泵盖1、第一壳体2以及第二壳体7相对固定连接；泵外壳能够形成泵内腔，泵内腔包括第一腔80和第二腔90，第一腔80内能够有工作介质流过，泵转子组件8和电控板6设置于第一腔80；第二腔90有工作介质通过，定子组件4、电机转子组件3和电控板6设置于第二腔90；电子油泵100’还包括泵轴5’,泵轴5’包括轴孔50，轴孔50能够连通第一腔80和第二腔90的工作介质，这样设置使得第一腔内的工作介质能够通过轴孔50流入第二腔，相较于电子油泵的第一种实施方式，本实施方式中的电子油泵的第二腔有工作介质通过，这样第二腔内的工作介质也能带走部分定子组件4在运行中所产生的热量，从而更有利于定子组件的散热；本实施例的其他特征可参考电子油泵的第一种实施方式，在此就不一一赘述了。
需要说明的是：以上实施例仅用于说明本发明而并非限制本发明所描述的技术方案，尽管本说明书参照上述的实施例对本发明已进行了详细的说明，但是，本领域的普通技术人员应当理解，所属技术领域的技术人员仍然可以对本发明进行修改或者等同替换，而一切不脱离本发明的精神和范围的技术方案及其改进，均应涵盖在本发明的权利要求范围内。

Claims (13)

  1. 一种电子油泵，包括泵外壳、泵转子组件、定子组件、电机转子组件以及电控板，所述泵外壳能够形成泵内腔，所述泵内腔包括第一腔和第二腔，所述泵转子组件设置于第一腔，所述定子组件、所述电机转子组件以及所述电控板设置于第二腔，其特征在于：所述泵外壳包括第一壳体，所述第一壳体包括一侧壁，所述侧壁包括内表面和外表面，至少部分所述内表面与至少部分所述定子组件的外壁接触设置，所述外表面设置有或成形有第一散热部，在所述电子油泵的周向上，至少部分所述第一散热部罩于至少部分所述定子组件的外周。
  2. 一种电子油泵，包括泵外壳、泵转子组件、定子组件、电机转子组件以及电控板，所述泵外壳能够形成泵内腔，所述泵内腔包括第一腔和第二腔，所述泵转子组件设置于第一腔，所述定子组件、所述电机转子组件以及所述电控板设置于第二腔，其特征在于：所述泵外壳包括第一壳体，所述第一壳体包括一侧壁，所述侧壁包括内表面和外表面，至少部分所述内表面与至少部分所述定子组件的外壁接触设置，所述外表面设置有或成形有第一散热部，所述第一壳体包括一中空部，所述中空部成形有中空腔，所述定子组件、所述电机转子组件设置于所述中空腔，所述定子组件包括线圈，所述线圈包括第一顶部和第一底部，所述第一顶部比所述第一底部更靠近所述泵转子组件，沿着所述电子油泵的中心轴线的方向，所述第一散热部包括起始点和终止点，所述起始点比所述终止点更靠近所述泵转子组件；沿着所述电子油泵的中心轴线的方向，所述第一顶部比所述第一散热部的所述终止点更靠近所述泵转子组件。
  3. 根据权利要求1或2所述电子油泵，其特征在于：沿着所述第一壳体的轴向，所述第一散热部包括起始点和终止点，所述起始点比所述终止点更靠近所述泵转子组件；所述定子组件包括定子铁芯，以靠近所述泵转子组件的所述定子铁芯的一侧为上，以靠近所述电控板的所述定子铁芯的一侧为下，沿所述第一壳体的轴向，所述第一散热部的起始点位于所述定子铁芯的上方，所述第一散热部的所述终止点位于所述定子铁芯的三分之二以下。
  4. 根据权利要求1至3任一项所述电子油泵，其特征在于：定义所述第一散热部向对应的所述侧壁的所述外表面的投影的面积为第一面积，所述第一散热部的表面积为第二面积，所述第二面积大于等于所述第一面积。
  5. 根据权利要求4所述电子油泵，其特征在于：所述第一散热部包括多个凸起部，所述凸起部向远离所述外表面凸出设置，所述凸起部沿所述电子油泵的轴向连续设置或间隔设置。
  6. 根据权利要求4所述电子油泵，其特征在于：所述第一散热部包括多个凹部，所述凹部自所述外表面向所述第一壳体的中心轴线凹陷设置，所述凹部沿所述第一壳体的轴向连续设置或间隔设置。
  7. 根据权利要求4所述电子油泵，其特征在于：所述第一散热部包括多个凸起部，所述凸起部向远离所述外表面凸出设置，所述第一散热部还包括多个凹部，所述凹部自所述外表面向所述第一壳体的中心轴线凹陷设置；所述凸起部和所述凹部沿所述第一壳体的轴向分布设置。
  8. 根据权利要求5或7所述电子油泵，其特征在于：所述凸起部的凸起高度相同，所述第一壳体在对应所述凸起部处所对应的壁厚大于等于所 述凸起部的凸起高度的1.5倍。
  9. 根据权利要求6或7所述电子油泵，其特征在于：所述第一壳体在对应所述第一散热部的所述凹部处所对应的壁厚大于等于所述凹部的凹陷深度的0.5倍，所述凹部的深度相同。
  10. 根据权利要求6或9所述电子油泵，其特征在于：位于所述第一散热部的所述起始点处的所述凸起部或所述凹部与所述外表面平滑过渡连接，位于所述第一散热部的所述起始点处的所述凸起部或所述凹部的侧壁与所述外表面的夹角大于90°；位于所述第一散热部的所述终止点处的所述凸起部或所述凹部与所述外表面平滑过渡连接，位于所述第一散热部的所述终止点处的所述凸起部或所述凹部的侧壁与所述外表面的夹角大于90°。
  11. 根据权利要求1至10任一项所述电子油泵，其特征在于：所述第一壳体为金属材料，所述第一壳体还包括第一沟槽和第二沟槽，所述第一散热部位于所述第一沟槽和所述第二沟槽之间；所述电子油泵还包括第一环形密封圈和第二环形密封圈，所述第一环形密封圈套设于所述第一沟槽，所述第二环形密封圈套设于所述第二沟槽，所述第一散热部位于所述第一环形密封圈和所述第二环形密封圈之间。
  12. 根据权利要求1至11任一项所述电子油泵，其特征在于：所述电子油泵还包括第二壳体，所述第二壳体与所述第一壳体固定连接，所述第二壳体包括多个凸起筋，所述凸起筋与所述第二壳体一体注塑成型，所述凸起筋向远离所述第一壳体的方向凸出设置。
  13. 根据权利要求12所述电子油泵，其特征在于：定义设置了所述凸 起筋的所述第二壳体的区域为第一区域，所述第一区域的面积为第三面积，所述电控板包括基板和发热电子元器件，定义所述发热电子元器件覆盖在所述基板上的区域为第二区域，所述第二区域的面积为第四面积，将所述第一区域和所述第二区域向所述电控板垂直投影，至少部分所述第一区域的垂直投影与至少部分所述第二区域的垂直投影重叠设置，所述第三面积大于等于所述第四面积。
PCT/CN2018/090337 2017-08-31 2018-06-08 电子油泵 Ceased WO2019041953A1 (zh)

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