CN113765303A - Motor and water pump integrated with control part - Google Patents

Motor and water pump integrated with control part Download PDF

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Publication number
CN113765303A
CN113765303A CN202011343973.7A CN202011343973A CN113765303A CN 113765303 A CN113765303 A CN 113765303A CN 202011343973 A CN202011343973 A CN 202011343973A CN 113765303 A CN113765303 A CN 113765303A
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CN
China
Prior art keywords
control
motor
control part
engaged
carrier
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.)
Pending
Application number
CN202011343973.7A
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Chinese (zh)
Inventor
裵完成
金俊燮
牟动宪
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.)
Corbis Co ltd
Coavis
Original Assignee
Corbis 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 Corbis Co ltd filed Critical Corbis Co ltd
Publication of CN113765303A publication Critical patent/CN113765303A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30Structural association with control circuits or drive circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606Canned motor pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/50Fastening of winding heads, equalising connectors, or connections thereto
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225Terminal boxes or connection arrangements
    • 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/22Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2203/00Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/06Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2211/00Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03Machines characterised by circuit boards, e.g. pcb

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention relates to a motor and a water pump integrated with a control part. The motor integrated with the control part includes: a motor part including a stator, a motor case and a rotor, a control part case coupled to the motor case, a control part carrier provided and fixed inside the control part case and formed with a through hole penetrating both upper and lower surfaces, a heat sink inserted into the through hole of the control part carrier, and a control substrate fixed to the control part carrier and provided inside the control part case and contacting the heat sink; the control substrate is configured to be engaged and electrically connected to a three-phase terminal of the motor part, which is electrically connected to a coil of the stator, through a first connecting pin, so that heat generated in the control substrate can be easily dissipated to the motor part through a heat sink to smoothly cool the control substrate, and assembly and maintenance are easy, and airtightness and productivity can be ensured.

Description

Motor and water pump integrated with control part
Technical Field
The present invention relates to a control part-integrated motor in which a BLDC motor and an inverter are integrally formed, and a water pump including the control part-integrated motor.
Background
A Brushless direct current (BLDC) motor is a motor in which brushes and a commutator are removed from a DC motor and an electronic rectifier is mounted, and has advantages of long life and high efficiency because friction and abrasion, which are disadvantages of the existing DC motor, can be prevented.
Such a BLDC motor is generally formed of an inverter-integrated BLDC motor, and for compact configuration, a motor part and an inverter part are generally integrally formed. Here, the motor part includes: a stator wound with a coil and fixed in the housing; and a rotor disposed adjacent to the stator and mounted with permanent magnets so as to be rotatably coupled to the housing. Further, the inverter part is provided with a PCB substrate on which various electronic components including switching elements for controlling the motor part are mounted, the switching elements mounted on the PCB substrate being configured to be electrically connected to coils constituting a stator of the motor part.
Here, since the inverter-integrated BLDC motor connects u, v, w and a neutral point (neutral), which are three phases of the stator, to the PCB substrate of the control part by welding (potting) or fusing (fusing), productivity is lowered, and a welded part or a fused part is dropped according to vibration or the like in use conditions, and thus a reliability problem occurs. In addition, since the control part cover and the PCB substrate, which are separately formed and joined to the control part housing, are fixed to the joint structure of the control part by bolting, etc., the structure is complicated and there are various joint portions such as laser welding, etc., so that airtightness and productivity are lowered. In addition, since it is difficult to separate the control part cover from the PCB substrate after manufacturing, there is a disadvantage that maintenance and reusability of each part are reduced, and the control part is provided with a neutral point (neutral terminal), so that there is a problem that temperature of the control part is increased.
In addition, conventionally, the motor case and the control section case are generally made of a metal material such as aluminum for heat dissipation and a structure for cooling by heat conduction is selected, but when a case made of a plastic material is used for securing price competitiveness, it is difficult to dissipate heat through the case, and therefore a new heat dissipation structure is required.
Documents of the prior art
Patent document
JP 2016-082735A(2016.05.16)
Disclosure of Invention
Means for solving the problems
The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a motor integrated with a control part and a water pump including the same, in which the motor integrated with the control part is configured such that the motor part and the control part are integrated, thereby reducing complexity of a conventional structure and eliminating various joint parts, thereby ensuring better airtightness, productivity, and the like.
In addition, a control-part-integrated motor and a water pump including the same are provided, having a structure for dissipating heat generated from a control substrate (PCB substrate) of a control part through an internal heat sink.
Means for solving the problems
In order to achieve the above object, the present invention provides a motor integrated with a control part, comprising: a motor part including a stator, a motor housing coupled with the stator, and a rotor disposed spaced apart from the stator and rotatably coupled to the motor housing, a control part housing formed in a container shape and coupled to the motor housing, a control part carrier disposed and fixed inside the control part housing and formed with a through hole penetrating both upper and lower surfaces, a heat sink inserted into the through hole of the control part carrier, coupled and fixed to the control part carrier, and a control substrate fixed to the control part carrier and disposed inside the control part housing and contacting the heat sink; one side of the control substrate is engaged, fixed and electrically connected to a main connection pin formed at the control part case, and the other side of the control substrate may be engaged and electrically connected to a three-phase terminal of the motor part electrically connected to a coil of the stator through a first connection pin.
In addition, the first connecting pin is formed integrally with the control part carrier, an upper end portion of the first connecting pin is formed to protrude to an upper side of the control part carrier and a lower end portion thereof is formed to protrude to a lower side of the control part carrier, the upper end portion of the first connecting pin may be engaged and electrically connected to the three-phase terminal and the lower end portion may be engaged and electrically connected to the control substrate.
In addition, an upper end portion of the first connection pin is inserted and clearance-fitted into the three-phase terminal, and in the control substrate, engagement holes are formed at positions corresponding to the main connection pin and the first connection pin, and the upper end portion of the main connection pin and the lower end portion of the first connection pin may be inserted and clearance-fitted into the engagement holes of the control substrate.
In addition, a groove penetrating through both surfaces is formed at a lower end portion of the first connecting pin and an upper end portion of the main connecting pin, and an elastic protrusion is formed to protrude to both sides of the groove, and a portion of the first connecting pin and the main connecting pin, in which the elastic protrusion is formed, may be inserted into and engaged with an engagement hole of the control substrate.
In addition, a concave seating groove is formed at the three-phase terminal of the motor part, the coil is inserted into the seating groove, and the connection terminal is inserted into the seating groove, so that the coil is engaged and electrically connected to the connection terminal, and the upper end portion of the first connection pin may be inserted, clearance-fitted, and electrically connected to the connection terminal engaged with the three-phase terminal.
In addition, in the motor case, second connection pins connected to each other are formed integrally with the motor case, the motor part is formed with a neutral point terminal electrically connected to a coil of the stator, and the second connection pins may be engaged and electrically connected to the neutral point terminal.
In addition, a concave seating groove is formed at a neutral point terminal of the motor part, a coil is inserted into the seating groove and a connection terminal is inserted into the seating groove so that the coil is engaged and electrically connected to the connection terminal, and the second connection pin is formed to extend upward, and the second connection pin may be inserted, clearance-fitted and electrically connected to the connection terminal engaged with the neutral point terminal.
In addition, in the control section case, a locking protrusion and a step portion are formed to protrude inward from an inner peripheral surface of the side wall, and the control section carrier may be sandwiched and fixed between the locking protrusion and the step portion of the control section case.
In addition, a locking protrusion is formed on the control unit carrier extending downward from the lower surface, and the control board may be sandwiched and fixed between the lower surface of the control unit carrier and the locking protrusion.
In addition, the heat sink includes: the heat sink includes a bottom plate, upper and lower flanges formed to protrude from an outer circumferential surface of the bottom plate in a vertically spaced manner, and a heat sink formed to extend upward from the bottom plate, and a fastening portion is formed at the control portion carrier, and the fastening portion of the control portion carrier may be inserted and clamped between the upper and lower flanges of the heat sink.
The control unit carrier may be formed with a notch groove that is adjacent to the fastening portion and from which a portion in a circumferential direction is removed, the upper flange of the heat sink may be formed at a position corresponding to the notch groove of the control unit carrier, and the fastening portion of the control unit carrier may be clamped between the upper flange and the lower flange of the heat sink by rotating the heat sink in the circumferential direction after the upper flange of the heat sink is inserted into the socket groove so as to penetrate the notch groove of the control unit carrier.
In addition, the motor housing may include: an outer sidewall; an inner side wall provided at an inner side of the outer side wall so as to be spaced apart in a radial direction; and a plurality of ribs connecting the outer and inner side walls.
In addition, the motor control device also comprises an O-shaped ring which is jointed at the lower end part of the motor shell to wrap the outer side surface, the lower surface and the inner side surface of the lower end part of the motor shell, a concave step part is formed at the inner side of the upper end part of the side wall of the control part shell, the control part shell is sleeved at the outer side of the O-shaped ring and is jointed with the motor shell, and the outer side surface part and the lower side surface part of the O-shaped ring can be tightly attached between the motor shell and the control part shell.
In addition, the water pump of the present invention may include: a lower housing; an upper casing joined to an upper side of the lower casing, the upper casing being joined to the lower casing to form an impeller housing space therein, the upper casing being formed with an inlet portion into which a fluid flows and an outlet portion from which the fluid is discharged, the inlet portion being communicated with the impeller housing space; an impeller provided in the impeller accommodating space; and the control part integrated motor is engaged at a lower side of the lower housing, and a rotor of the control part integrated motor is engaged with the impeller.
Further, the rotor may include a rotor accommodating portion having a concave container shape, which is integrally formed with the lower housing, and the rotor may be disposed inside the rotor accommodating portion.
ADVANTAGEOUS EFFECTS OF INVENTION
The motor integrated with the control part and the water pump comprising the motor integrated with the control part have the advantages that the control substrate is convenient to joint and electrically connected to the control part shell due to simple assembly structure, and the control substrate is convenient to maintain.
In addition, since there are no various kinds of joint portions and complicated electrical connection structures, there is an advantage that better airtightness and productivity can be ensured.
In addition, even if the motor housing and the control section housing are made of plastic materials, there is an advantage that heat can be smoothly radiated to the motor section by the heat sink provided inside.
Drawings
Fig. 1 is a front sectional view illustrating a conventional BLDC motor.
Fig. 2 to 4 are an assembled perspective view, an assembled sectional view, and an exploded sectional view illustrating a water pump including a motor integrated with a control part according to an embodiment of the present invention.
Fig. 5 is a plan view of a motor housing as viewed from the upper side in the motor integrated with the control section according to the embodiment of the present invention.
Fig. 6 and 7 are a partially exploded sectional view and an assembled sectional view illustrating a portion where the first connection pin is engaged and electrically connected in the motor integrated with the control part according to an embodiment of the present invention.
Fig. 8 is a partially assembled sectional view showing a portion where a main connection pin is engaged and electrically connected in a motor integrated with a control portion according to an embodiment of the present invention.
Fig. 9 is a partially assembled sectional view showing a portion where the second connection pin is engaged and electrically connected in the control-part-integrated motor according to the embodiment of the present invention.
Fig. 10 to 12 are perspective views illustrating a control part carrier and a heat sink in a control part-integrated motor according to an embodiment of the present invention.
Reference numerals
100: stator
110: the core 120: toothed section
130: insulator 140: coil
150: three-phase terminal 151: placing groove
160: connecting joint
161: coil joint 162: pin joint
170: neutral point terminal 171: placing groove
180: second connecting pin
210: lower casing
211: lower placement groove 212: lower flow channel groove
220: rotor housing
221: rotor accommodating space 222: lower bearing mounting part
300: motor casing
301: outer side wall 302: rib-like part
303: inner side wall 304: projecting end
400: the rotor 410: rotating shaft
411: lower bearing 412: upper bearing
B: insulating magnetic tube P: support pin
500: impeller
510: the upper plate 520: lower plate
530: blade
600: upper shell
601: impeller accommodation space 602: upper bearing mounting part
610: the inlet portion 611: inflow channel
612: supporting part
620: outlet portion 621: discharge flow path
630: upper-portion placement groove 632: upper flow channel groove
700: control part shell
701: side wall 702: bottom wall
703: step portion 704: locking projection
710: main connecting pin
711: groove 712: elastic protrusion
730: control substrate 731: insertion tube
732: coupling hole 750: o-shaped ring
800: control section carrier 810: through hole
820: first connecting pin 821: trough
822: the elastic protrusion 830: locking projection
840: fastening portion 841: notch groove
842: locking projection
900: heat sink
910: bottom plate 911: upper flange
912: lower flange 913: locking projection
920: heat sink
Detailed Description
Hereinafter, a motor integrated with a control unit and a water pump including the same according to the present invention will be described in detail with reference to the accompanying drawings.
Fig. 2 to 4 are an assembled perspective view, an assembled sectional view, and an exploded sectional view illustrating a water pump including a motor integrated with a control part according to an embodiment of the present invention, and fig. 5 is a plan view of a motor housing as viewed from an upper side in the motor integrated with a control part according to an embodiment of the present invention.
Referring to fig. 2 to 5, the motor integrated with the control part according to an embodiment of the present invention may mainly include a motor part and a control part. Also, the motor part may include the stator 100, the motor housing 300, and the rotor 400, and the control part may include the control part housing 700, the control part carrier 800, the heat sink 900, and the control substrate 730.
First, the stator 100 of the motor part may include a core 110, a plurality of teeth 120, an insulator 130, a coil 140, and a plurality of three-phase terminals 150. In addition, the motor part may include a plurality of neutral point terminals 170 and a second connection pin 180. For example, the core 110 may be formed in a cylindrical shape, and the plurality of teeth 120 may be formed to protrude inward in a radial direction from an inner circumferential surface of the core 110. In addition, the tooth portions 120 are provided at intervals in the circumferential direction, and the tooth portions 120 may be provided inside the core 110 in a radially formed state. In addition, radially inner ends of the plurality of teeth 120 facing each other are formed at intervals, and an inner side surrounded by the teeth 120 may be formed in a shape penetrating up and down. The insulator 130 is formed of an electrically insulating material and may be engaged with the core 110 and the tooth 120 to wrap the core 110 and the tooth 120 to electrically insulate them. As an example, insulators 130 are formed on upper and lower surfaces of the core 110 to wrap upper, lower, and side surfaces of the teeth 120. The coil 140 is wound on the outside of the insulator 130 wrapping the teeth 120, and each winding of the coil 140 may be formed in an insulated state by coating. The three-phase terminal 150 and the neutral point terminal 170 may be engaged and fixed to the insulator 130, and the coil 140 may be engaged at ends of the three-phase terminal 150 and the neutral point terminal 170, respectively. In addition, the three-phase terminal 150 is an end of u, v, w as three phases of the stator 100, and the neutral point terminal 170 may be an end of another three phases of the stator 100. In addition, the motor housing 300 may include an outer sidewall 301, a plurality of ribs 302, an inner sidewall 303, and a protruding end 304. Here, the outer wall 301 may be formed in a cylindrical shape, a rib portion 302 may be formed to extend radially inward from an inner peripheral surface of the outer wall 301, a cylindrical inner wall 303 may be formed radially inward from an inner end of the rib portion 302, and the protruding end 304 may be formed in a shape to extend radially inward from a lower end of the inner wall 303. In addition, the second coupling pin 180 may be integrally formed at the protruding end 304. In addition, the stator 100 is disposed inside the inner sidewall 303 of the motor housing 300, the stator 100 may be engaged and fixed to the inner circumferential surface of the inner sidewall 303 of the motor housing 300, and the second connection pin 180 may be inserted, clearance-fitted, and electrically connected to the neutral point terminal 170. At this time, the lower end portions of the second connection pins 180 may be connected to each other as a neutral point (neutral), and when the motor housing 300 is manufactured of a plastic material, the second connection pins 180 of a metal material are insert-molded, so that the second connection pins 180 may be formed in a shape in which the lower end portions are recessed into the protruding ends 304 of the motor housing 300 and the upper end portions are exposed to the outside of the protruding ends 304 and extend to the upper side. The rotor 400 is disposed at an inner side of the stator 100 in a radius direction, and an outer circumferential surface of the rotor 400 may be disposed to be spaced apart from an inner circumferential surface of the stator 100. In addition, the lower end portion and the upper end portion of the rotation shaft 410 of the rotor 400 may be directly or indirectly rotatably coupled to the motor housing 300.
The control section housing 700 of the control section is constituted by a cylindrical side wall 701 and a bottom wall 702 blocking a lower end of the side wall, and may be formed in a container shape having an opening whose upper side is opened. The control section case 700 may be formed with a stepped portion 703 having a shape protruding inward from the inner circumferential surface of the sidewall 701, and the upper surface of the stepped portion 703 may be located at an intermediate height between the upper end of the sidewall 701 and the upper surface of the bottom wall 702. Also, the latching protrusion 704 may be formed to protrude from the inner circumferential surface of the sidewall 701 at a position spaced apart from the upper side of the stepped portion 703. In addition, the main connection pin 710 may be formed in a shape protruding from the upper surface of the one-side stepped portion 703 of the control section case 700 toward the inner space of the control section case 700, and since the main connection pin 710 is formed of a metal material, when the control section case 700 is manufactured using plastic, it may be integrally formed by insert molding. Therefore, the main connection pin 710 may be formed in a shape in which the upper end portion extends from the upper surface of the stepped portion 703 to the upper side, and the lower end portion may be formed in a shape exposed to the outside of the control portion case 700. In addition, the open upper side of the control section case 700 may be engaged and fixed to the lower side of the motor case. Here, the lower end of the motor housing 300 is inserted with an O-ring 750 and the upper end of the control section housing 700 is engaged in a shape clamped to the outside of the O-ring 750, and after the engagement, the motor housing 300 and the control section housing 700 can be firmly fixed to each other by a separate fastening tool or the like. In addition to this, the coupling structure of the motor housing 300 and the control part housing 700 may be formed in various ways.
The control unit carrier 800 is formed in a ring shape with a through hole 810 penetrating both upper and lower surfaces formed at a central portion thereof, and is inserted into the control unit case 700 and disposed inside the control unit case 700. Further, since the control unit carrier 800 is inserted into the control unit case 700 from the upper side thereof, the control unit carrier 800 can be sandwiched and fixed between the step 703 and the locking protrusion 704 of the control unit case 700 in a state where the control unit carrier 800 is mounted on and supported by the upper surface of the step 703 of the control unit case 700. In addition, the first connection pins 820 may be integrally formed at the control part carrier 800 by insert molding or the like, the lower sides of the first connection pins 820 may be formed in a shape protruding downward from the lower surface of the control part carrier 800, and the upper sides of the first connection pins 820 may be formed in a shape protruding upward from the upper surface of the control part carrier 800. In addition, the fastening part 840 may be formed in a protrusion shape protruding from the inner circumferential surface at the lower end of the inner circumferential surface of the control part carrier 800 where the through hole 810 is formed. In addition, the control part carrier 800 may have a latching protrusion 830 extending downward from the lower surface.
The heat sink 900 is inserted into the through hole 810 of the control part carrier 800, and the heat sink 900 may be engaged and fixed to the fastening part 840 of the control part carrier 800. Here, the heat sink 900 may include: a disk-shaped bottom plate 910; a plurality of heat radiating fins 920 formed to extend from the upper surface of the base plate 910 to the upper side; the upper flange 911 and the lower flange 912 are formed to protrude outward in the radial direction while being spaced apart from each other in the vertical direction on the outer circumferential surface of the base plate 910. Therefore, the heat sink 900 may be fixed to the controller carrier 800 in a shape in which the heat radiation fins 920 protrude upward from the upper surface of the controller carrier 800 through the through holes 810 of the controller carrier 800. At this time, the upper end of the heat sink 920 may be formed to extend to a position adjacent to and spaced apart from the rotor accommodating part 220 accommodating the rotor 40 of the motor part. In addition, the fastening portion 840 of the control portion carrier 800 is inserted between the upper flange 911 and the lower flange 912 of the heat sink 900, and may be engaged in a clamped state. In addition, the heat sink 900 may be engaged and secured to the control section carrier 800 in various structures and manners.
The control substrate 730 may be a PCB substrate on which electronic components such as a switching element and a capacitor are mounted. In addition, the control substrate 730 may be joined to the lower side of the control part carrier 800, and the control substrate 730 may be joined to the lower side of the control part carrier 800 from the lower side to the upper side of the control part carrier 800. At this time, the control substrate 730 may be sandwiched and fixed between the lower surface of the control unit carrier 800 and the latching protrusion 830, and the upper surface of the control substrate 730 may be closely attached to the lower surface of the heat sink 900. In addition, a coupling hole 732 may be formed through both upper and lower surfaces of the control substrate 730, and the insertion tube 731 of a metal material may be formed in a shape of being inserted into the control substrate 730, so that the coupling hole 732 may be formed in the insertion tube 731. In addition, the insertion tube 731 may be connected to a circuit of the control substrate 730. In addition, when the control substrate 730 is coupled to the control part carrier 800, the lower end portion of the first connection pin 820 is inserted and clearance-fitted into the coupling hole 732 of the control substrate 730, so that the control substrate 730 and the first connection pin 820 can be electrically connected. In addition, when the control part carrier 800 is inserted into the inside of the control part case 700 and assembled in a state where the control substrate 730 is engaged and fixed to the control part carrier 800, the upper end portion of the main connection pin 710 is inserted and clearance-fitted into the engagement hole 732 of the control substrate 730, so that the control substrate 730 can be electrically connected with the main connection pin 710. Thereafter, when the control part case 700 is coupled to the motor case 300, the upper end portion of the first connection pin 820 may be clearance-fitted and electrically connected to the three-phase terminal 150 of the motor part.
As described above, the control section case, the control section carrier, the heat sink, and the control substrate are easily assembled and fixed by using the press-fit method. In addition, the three-phase terminals, the first connection pin, the control substrate, and the main connection pin of the motor are easily engaged and electrically connected while being assembled, so assemblability and productivity may be improved when manufacturing the motor integrated with the control part. Therefore, when the control board fails, the control board can be easily separated from the control unit case by detaching the control unit case from the motor unit, and the control board can be easily maintained. In addition, heat generated from the control substrate of the control part is transferred to the heat sink by heat conduction, and the heat sink dissipates heat to the motor part, so that the control substrate can be smoothly cooled.
Fig. 6 and 7 are a partially exploded sectional view and an assembled sectional view illustrating a portion where the first connection pin is engaged and electrically connected in the control part-integrated motor according to an embodiment of the present invention.
As shown in the drawing, a groove 821 penetrating both surfaces is formed at a lower end portion of the first connecting pin 820, and elastic protrusions 822 are formed to protrude to both sides of the groove 821. In addition, the portion of the first connection pin 820 where the elastic protrusion 822 is formed may be inserted and engaged to the engagement hole 732 of the control substrate 730. At this time, the width of the outer surface forming the elastic protrusion 822 is formed to be larger than the inner diameter of the engagement hole 732, and the lower end portion of the first connection pin 820 may be inserted and securely engaged to the engagement hole 732 by pressurization.
In addition, at the lower end portion of the three-phase terminal 150 of the motor part, a seating groove 151 is concavely formed from the lower surface to the upper side so that the coil 140 is inserted into the seating groove 151, and the connection tab 160 is inserted into the seating groove 151, and the coil 140 is engaged and electrically connected to the upper side of the connection tab 160. Additionally, the first connection pin 820 may be insertably engaged and electrically connected to the underside of the connection joint 160. At this time, the connection tab 160 is formed of a metal material or the like, and the coil 140, the connection tab 160, and the first connection pin 820 may be electrically connected to each other. In addition, the connection tab 160 is formed with a coil engaging portion 161 having a groove recessed from an upper end to a lower side so that the coil 140 can be inserted into the groove of the coil engaging portion 161, and the connection tab 160 is formed with a pin engaging portion 162 having a groove recessed from a lower end to an upper side so that the first connection pin 820 can be inserted, clearance-fitted, and electrically connected to the groove of the pin engaging portion 162. At this time, the coil engaging portion 161 may be formed in a shape of a pair of protrusions having a pointed shape toward the upper side, and the coil 140 may be inserted between the pair of protrusions. In addition, the seating groove 151 of the three-phase terminal 150 and the seating groove 171 of the neutral point terminal 170 may support the upper end of the coil 140, and when the coil 140 is inserted between a pair of pointed protrusions, the insulation layer of the outer surface is peeled off while being pressed, so that the coil 140 and the connection tab 160 may be electrically connected. In addition, the pin engaging part 162 of the connection joint 160 may be formed in the form of a pair of protrusions protruding toward the lower side, and each protrusion may be formed with an elongated groove along the upper and lower sides at the inner side. Accordingly, the first connection pin 820 is inserted into engagement and electrically connected between the pair of protrusions forming the pin engagement portion 162, and the first connection pin 820 may be elastically supported by the pair of protrusions.
Fig. 8 is a partially assembled sectional view showing a portion where a main connection pin is engaged and electrically connected in the control-section-integrated motor according to the embodiment of the present invention.
Referring to fig. 8, a groove 711 penetrating both surfaces is formed at an upper end portion of the main link pin 710, and elastic protrusions 712 may be formed to protrude to both sides of the groove 711. In addition, a portion of the main connection pin 710 in which the elastic protrusion 712 is formed may be inserted and engaged into the engagement hole 732 of the control substrate 730. At this time, since the width of the outer surface formed with the elastic protrusions 712 is formed to be greater than the inner diameter of the engagement hole 732, the upper end portion of the main connection pin 710 may be inserted and securely engaged to the engagement hole 732 by pressurization.
Fig. 9 is a partially assembled sectional view showing a portion where the second connection pin is engaged and electrically connected in the control-part-integrated motor according to the embodiment of the present invention.
Referring to fig. 9, a seating groove 171 recessed from a lower surface to an upper side is formed at a lower end portion of a neutral point terminal 170 of the motor part such that the coil 140 is inserted into the seating groove 171 and the connection tab 160 is inserted into the seating groove 171, whereby the coil 140 may be engaged and electrically connected to an upper side of the connection tab 160. Additionally, a second connecting pin 180 may be insertedly engaged and electrically connected to the underside of the connecting sub 160. At this time, the connection tab 160 is made of a metal material or the like, and thus, the coil 140, the connection tab 160, and the second connection pin 180 may be electrically connected to each other. In addition, the connection tab 160 is formed with a coil engaging portion 161 having a groove recessed from an upper end to a lower side so that the coil 140 can be inserted into the groove of the coil engaging portion 161, and the connection tab 160 is formed with a pin engaging portion 162 having a groove recessed from a lower end to an upper side so that the second connection pin 180 can be inserted, clearance-fitted, and electrically connected to the groove of the pin engaging portion 162. At this time, the coil engaging portion 161 may be formed in a pair of protrusion shapes having a pointed shape toward the upper side, and the coil 140 may be inserted between the pair of protrusions. In addition, the upper end of the coil 140 may be supported by the seating groove 171 of the neutral terminal 170, and when the coil 140 is inserted between a pair of pointed protrusions, the insulation layer of the outer surface is peeled off while being pressed, so that the coil 140 and the connection terminal 160 may be electrically connected. In addition, the pin engaging part 162 of the connection joint 160 may be formed in the form of a pair of protrusions protruding toward the lower side, and each protrusion may be formed with an elongated groove along the upper and lower sides at the inner side. Accordingly, the second connection pin 180 may be inserted into engagement and electrically connected between the pair of protrusions forming the pin engagement portion 162, and the second connection pin 180 may be elastically supported by the pair of protrusions, respectively.
Fig. 10 to 12 are perspective views illustrating a control part carrier and a heat sink in the control part-integrated motor according to an embodiment of the present invention.
As shown, the control part carrier 800 may be formed with a cutout groove 841, the cutout groove 841 being formed in a shape that is adjacent to the fastening part 840 and removes a portion in a circumferential direction. After the heat sink 900 is inserted from the lower side toward the upper side of the control unit carrier 800 such that the upper flange 911 of the heat sink 900 penetrates the notch 841 of the control unit carrier 800, the fastening portion 840 of the control unit carrier 800 may be sandwiched between the upper flange 911 and the lower flange 912 of the heat sink 900 when the heat sink 900 is rotated in the circumferential direction. At this time, since the locking protrusion 913 formed to protrude from the upper flange 911 of the heat sink 900 and the locking protrusion 842 formed to protrude from the fastening portion 840 of the control unit carrier 800 are engaged with each other, and thus do not rotate in the opposite direction to the direction in which the heat sink 900 is fixed to the control unit carrier 800 by rotating, the heat sink can be firmly fixed to the control unit carrier and does not separate.
In addition, the O-ring 750 may be fitted over the lower end portion of the motor housing 300, and the O-ring 750 may be coupled to the motor housing in a shape of wrapping the outer side surface, the lower surface, and the inner side surface, which are three surfaces of the lower end portion of the motor housing. In addition, the control section case 700 is formed with a concave stepped portion inside the upper end portion of the side wall 701, and the control section case 700 may be fitted outside the O-ring 750 and engaged with the motor case 300. Here, the O-ring 750 is installed at an inner stepped portion of an upper end portion of the sidewall 701 of the control section case 700, and portions corresponding to the O-ring 750 located at an outer side surface and a lower side surface of a lower end portion of the motor case 300 may be closely attached between the motor case 300 and the control section case 700. Therefore, the O-ring can be prevented from coming off, and the airtightness can be improved by the O-ring.
Further, according to an embodiment of the present invention, a water pump including a control-section-integrated motor may include the control-section-integrated motor and a pump section engaged therewith.
Motor integrated with control part as described above, the pump part may include the lower housing 210, the rotor receiving part 220, the impeller 500, and the upper housing 600. In addition, the pump section may be joined to an upper side of the motor integrated with the control section.
First, the lower case 210 is formed with a lower seating groove 211 depressed from an upper surface to a lower side to be able to receive a portion of the impeller 500, and a concave lower flow path groove 212 may be formed at an outer side of the lower seating groove 211 in a radius direction to allow a fluid discharged from the impeller 500 to flow.
The rotor receiving portion 220 may be integrally formed with the lower case 210 by injection molding, and a container-shaped rotor receiving portion 220 recessed downward at a central portion of the lower case 210 may be formed. Therefore, a rotor receiving space 221 is formed inside the rotor receiving part 220, and the rotor receiving part 220 may be formed in a shape protruding downward on the lower surface of the lower case 210. In addition, the rotor receiving part 220 has a lower bearing mounting part 222 formed at the lower bottom of the rotor receiving space 221 so that the lower bearing 411 may be coupled to the lower bearing mounting part 222. Here, the lower bearing 411 may include an insulated magnetic tube B capable of supporting a lower end portion of the rotation shaft 410 of the rotor 400 in a radial direction and a support pin P capable of supporting a lower end portion of the rotation shaft 410 in an axial direction. Accordingly, the rotor 400 is inserted and disposed in the rotor receiving space 221, which is the inside of the rotor receiving part 220, and the outer circumferential surface of the rotor 400 may be spaced apart from the inner circumferential surface of the rotor receiving part 220. In addition, in the rotor 400, the lower end portion of the rotation shaft 410 is coupled to the lower bearing 411, so that the rotor 400 can be smoothly rotated.
The upper casing 600 is coupled to an upper side of the lower casing 210, and an impeller receiving space 601 in which the impeller 500 can be received is formed by the coupling of the upper casing 600 and the lower casing 210. In addition, an upper seating groove 630 recessed upward is formed in a lower surface of the upper case 600 to be able to accommodate a portion of the impeller 500, and the lower seating groove 211 and the upper seating groove 630 form an impeller accommodating space 601. In addition, a recessed upper flow channel 632 may be formed on the lower surface of the upper casing 600 at a position corresponding to the lower flow channel 212 of the lower casing 210 so that the fluid discharged from the impeller 500 can flow. In addition, since the central portion of the upper case 600 is formed to penetrate up and down, the upper seating groove 630 and the inlet portion 610 communicate with each other, and the outlet portion 620 is formed to be connected to the upper flow path groove 632 and the lower flow path groove 212. In addition, in the upper housing 600, an upper bearing mounting portion 602 is formed inside the inlet portion 610, and the upper bearing 412 may be coupled to the upper bearing mounting portion 602. At this time, the upper bearing mounting portion 602 is provided at a portion where the inflow channel 611 is formed, and the upper bearing mounting portion 602 is fixed to the supporting portion 612 formed to protrude from the inner circumferential surface of the inflow channel 611, so that the fluid can smoothly pass between the supporting portions 612 and flow into the impeller 500 side. Here, the upper bearing 412 may include an insulated magnetic tube B capable of supporting an upper end portion of the rotation shaft 410 of the rotor 400 in a radial direction and a support pin P capable of supporting an upper end of the rotation shaft 410 in an axial direction. Accordingly, the upper end of the rotation shaft 410 of the rotor 400 is coupled to the upper bearing 412, so that the rotor 400 can be smoothly rotated.
The impeller 500 is used to forcibly feed the fluid flowing into the inlet portion 610 of the upper case 600 toward the outlet portion 620 by rotation. The impeller 500 may include an upper plate 510, a lower plate 520, and a plurality of blades 530, and between the upper plate 510 and the lower plate 520 spaced apart in the up-down direction, the plurality of blades 530 may be formed in a pattern spaced apart in the circumferential direction. Further, a through hole penetrating both upper and lower surfaces is formed at a central portion of the upper plate 510, and the inside of the impeller 500 communicates with the inlet portion 610 of the upper casing 600 through the through hole. The outer periphery of the impeller 500 is provided around the lower flow channel 212 and the upper flow channel 632, and the fluid discharged from the impeller 500 flows along the discharge flow channel 621 formed by the flow channel and then can be discharged through the outlet 620 of the upper casing 600. In addition, as an example, in the impeller 500, the lower plate 520 may be integrally formed with the core of the rotor 400, and the upper plate 610 and the blades 530 are integrally formed, so that the blades 530 may be formed in a shape joined to the lower plate 520. In addition, the impeller may be formed in various forms.
Therefore, the fluid flowing into the inlet portion 610 of the upper housing 600 flows into the impeller 500 through the inflow channel 611 and the through hole in the upper center of the impeller 500, is pressurized by the centrifugal force generated by the rotation of the impeller 500, flows into the discharge channel 621, flows along the discharge channel 621, and is discharged to the outside through the outlet portion 620.
The present invention is not limited to the above-described embodiments, is widely applicable, and various modifications can be implemented by any person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims.

Claims (15)

1. An electric machine integrated with a control portion, comprising:
a motor part including a stator, a motor housing engaged with the stator, and a rotor disposed spaced apart from the stator and rotatably engaged to the motor housing,
a control part housing formed in a container shape and coupled to the motor housing,
a control part carrier which is arranged and fixed in the control part shell and is provided with a through hole penetrating through the upper surface and the lower surface,
a heat sink inserted into the through hole of the control part carrier, engaged and fixed to the control part carrier, and
a control substrate fixed to the control part carrier and disposed inside the control part case, and contacting the heat sink;
one side of the control substrate is engaged, fixed and electrically connected to a main connection pin formed at the control part case, and the other side of the control substrate is engaged and electrically connected to a three-phase terminal of the motor part, which is electrically connected to a coil of the stator, through a first connection pin.
2. The control-integrated motor according to claim 1,
the first connecting pin is formed integrally with the control part carrier, an upper end portion of the first connecting pin is formed to protrude to an upper side of the control part carrier and a lower end portion thereof is formed to protrude to a lower side of the control part carrier,
the first connecting pin has an upper end portion engaged and electrically connected to the three-phase terminal and a lower end portion engaged and electrically connected to the control substrate.
3. The control-integrated motor according to claim 2,
the upper end portion of the first connecting pin is inserted and clearance-fitted to the three-phase terminal,
in the control substrate, engagement holes are formed at positions corresponding to a main connection pin and a first connection pin, and an upper end portion of the main connection pin and a lower end portion of the first connection pin are inserted and clearance-fitted into the engagement holes of the control substrate.
4. The control-integrated motor according to claim 3,
a groove penetrating through both surfaces is formed at a lower end portion of the first connecting pin and an upper end portion of the main connecting pin, and elastic protrusions are formed to protrude to both sides of the groove,
the first connecting pin and the portion of the main connecting pin in which the elastic protrusion is formed are inserted into and engaged with the engagement hole of the control substrate.
5. The control-integrated motor according to claim 1,
a recessed seating groove is formed at a three-phase terminal of the motor part, a coil is inserted into the seating groove, and a connection terminal is inserted into the seating groove, so that the coil is engaged and electrically connected to the connection terminal,
the upper end portion of the first connecting pin is inserted, clearance-fitted, and electrically connected to a connecting terminal engaged with the three-phase terminal.
6. The control-integrated motor according to claim 1,
in the motor housing, second connection pins connected to each other are formed integrally with the motor housing, the motor part is formed with a neutral point terminal electrically connected to a coil of the stator,
the second connecting pin engages and electrically connects to a neutral point terminal.
7. The control-integrated motor according to claim 6,
a concave seating groove is formed at a neutral point terminal of the motor part, a coil is inserted into the seating groove and a connection terminal is inserted into the seating groove, so that the coil is engaged and electrically connected to the connection terminal,
the second connecting pin is formed to extend upward, and the second connecting pin is inserted, clearance-fitted, and electrically connected to the connecting tab engaged with the neutral point terminal.
8. The control-integrated motor according to claim 1,
the control unit housing has a locking projection and a step portion projecting inward from an inner peripheral surface of the side wall, and the control unit carrier is sandwiched and fixed between the locking projection and the step portion of the control unit housing.
9. The control-integrated motor according to claim 1,
a locking protrusion is formed on the control unit carrier extending downward from the lower surface, and the control board is sandwiched and fixed between the lower surface of the control unit carrier and the locking protrusion.
10. The control-integrated motor according to claim 1,
the heat sink includes: a bottom plate, upper and lower flanges formed to protrude in an up-down spaced manner from an outer circumferential surface of the bottom plate, and a heat dissipation fin formed to extend upward from the bottom plate,
a fastening portion is formed in the control portion carrier, and the fastening portion of the control portion carrier is inserted and clamped between an upper flange and a lower flange of the heat sink.
11. The control-integrated motor according to claim 10,
the control part carrier is formed with a notch groove adjacent to the fastening part and excluding a portion in a circumferential direction, an upper flange of the heat sink is formed at a position corresponding to the notch groove of the control part carrier,
after the upper flange of the heat sink is inserted into the socket groove so as to penetrate through the notch groove of the control unit carrier, the heat sink is rotated in the circumferential direction, and the fastening portion of the control unit carrier is sandwiched between the upper flange and the lower flange of the heat sink.
12. The control-integrated motor according to claim 1,
the motor housing includes: an outer sidewall; an inner side wall provided at an inner side of the outer side wall so as to be spaced apart in a radial direction; and a plurality of ribs connecting the outer and inner side walls.
13. The control-integrated motor according to claim 1,
further comprising O-rings engaged at the lower end portion of the motor housing to wrap the outer side surface, the lower surface and the inner side surface of the lower end portion of the motor housing,
the control part shell is provided with a concave step part at the inner side of the upper end part of the side wall, the control part shell is sleeved at the outer side of the O-shaped ring and is jointed with the motor shell,
the outer side surface part and the lower side surface part of the O-shaped ring are tightly attached between the motor shell and the control part shell.
14. A water pump, comprising:
a lower housing;
an upper casing joined to an upper side of the lower casing, the upper casing being joined to the lower casing to form an impeller housing space therein, the upper casing being formed with an inlet portion into which a fluid flows and an outlet portion from which the fluid is discharged, the inlet portion being communicated with the impeller housing space;
an impeller provided in the impeller accommodating space; and
the control-integrated motor according to any one of claims 1 to 13, which is engaged on a lower side of the lower housing, and a rotor of which is engaged with the impeller.
15. The water pump of claim 14,
the rotor housing is formed integrally with the lower housing, and the rotor is disposed inside the rotor housing.
CN202011343973.7A 2020-06-05 2020-11-25 Motor and water pump integrated with control part Pending CN113765303A (en)

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