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WO2023104189A1 - 一种电动泵 - Google Patents

一种电动泵 Download PDF

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Publication number
WO2023104189A1
WO2023104189A1 PCT/CN2022/137935 CN2022137935W WO2023104189A1 WO 2023104189 A1 WO2023104189 A1 WO 2023104189A1 CN 2022137935 W CN2022137935 W CN 2022137935W WO 2023104189 A1 WO2023104189 A1 WO 2023104189A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
electric pump
injection molding
pin
injection
Prior art date
Application number
PCT/CN2022/137935
Other languages
English (en)
French (fr)
Inventor
张峻
胡骏迪
殷炳玖
Original Assignee
浙江三花汽车零部件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江三花汽车零部件有限公司 filed Critical 浙江三花汽车零部件有限公司
Priority to EP22903606.6A priority Critical patent/EP4446593A1/en
Publication of WO2023104189A1 publication Critical patent/WO2023104189A1/zh

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Classifications

    • 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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0693—Details or arrangements of the wiring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits

Definitions

  • the invention relates to a fluid pump, in particular to an electric pump.
  • the electric pump includes a stator assembly, a pump housing, and pins.
  • the pins are used to connect with the outside world to provide energy, drive signals, or control signals for the electric pump.
  • the fixing of the pump housing, stator assembly, and pins is relatively complicated, providing a It is a technical problem to find a simple fixing method of the pump housing, the stator assembly and the pins.
  • the purpose of the present application is to provide an electric pump, which is beneficial to simplify the fixing of the pump housing, the stator assembly and the pins.
  • an electric pump including a stator assembly, a first housing, and pins
  • the stator assembly includes a stator core, an insulating frame, and a winding
  • the The insulating frame covers at least part of the surface of the stator core, and the winding wire of the winding is wound on the insulating frame
  • the first casing covers at least part of the stator assembly, and the first casing at least
  • the stator assembly is used as an insert for injection molding to fix the stator assembly
  • the first housing has an injection-molded pin hole, the fixing part of the pin is located in the pin hole, and the winding It is fixed and electrically connected with the wire hanging part of the pin.
  • the electric pump includes a stator assembly, pins, a rotor assembly, and a pump housing.
  • the pump housing includes an injection molding body and a pump cover.
  • the electric pump assembly method includes:
  • the pump cover and the injection molded body are fixedly connected.
  • the first casing is injection-molded with the stator assembly as an insert and fixed with the stator assembly by injection molding, and forms a pin hole for placing a pin, which is conducive to simplifying the pump casing, stator Fixing of components and pins.
  • Fig. 1 is a kind of sectional structure schematic diagram of the first embodiment of the electric pump of the present invention
  • Fig. 2 is a schematic diagram of an exploded structure of the electric pump in Fig. 1;
  • Fig. 3 is a schematic front view of the motor in Fig. 1;
  • Fig. 4 is a schematic sectional view along A-A of Fig. 3;
  • Fig. 5 is a structural schematic diagram of a viewing angle of the first casing
  • Fig. 6 is a structural schematic diagram of another viewing angle of the first housing
  • Fig. 7 is a three-dimensional structural schematic diagram of a stator assembly
  • Fig. 8 is a structural schematic diagram of a combination of the stator assembly and the inner casing
  • Fig. 9 is a structural schematic diagram of another viewing angle of the combination of the stator assembly and the inner casing
  • Fig. 10 is a schematic diagram of a three-dimensional structure of a pin
  • Fig. 11 is a schematic diagram of cooperation of the first housing, pins and windings
  • Fig. 12 is a schematic cross-sectional structure diagram of a second embodiment of the electric pump of the present invention.
  • Fig. 13 is a schematic structural view of Fig. 12 when the second housing is removed;
  • Fig. 14 is a schematic view of the structure of Fig. 13 with the joint portion removed.
  • the electric pump in the following embodiments can provide flow power for the working medium of the automobile thermal management system.
  • the working medium can be 50% ethylene glycol aqueous solution or clear water, and of course the working medium can also be other substances.
  • the electric pump 1000 includes a pump housing 1100, a rotor assembly 1200, a stator assembly 1300, and a pump shaft 16. At least part of the rotor assembly 1200 is sleeved on the outer circumference of the pump shaft 16, and the rotor assembly 1200 and the pump shaft 16 rotate Connection; the pump housing 1100 can form a pump cavity 1010, the rotor assembly 1200 is located in the pump cavity 1010, the pump cavity 1010 includes a rotor cavity 1011 and an impeller cavity 1012, and the rotor cavity 1011 and the impeller cavity 1012 communicate; the rotor assembly 1200 includes a rotor 1220 and the impeller 1210 , in this embodiment, the rotor 1220 includes permanent magnets, wherein at least part of the rotor 1220 is located in the rotor cavity 1011 , and the impeller 1210 is located in the impeller cavity 1012 .
  • the electric pump 1000 is working, by controlling the current of the stator assembly 1300 and then controlling the excitation
  • the stator assembly 1300 includes a stator core 1310, an insulating frame 1320 and a winding 1330, the number of windings 1330 is at least three, the insulating frame 1320 covers at least part of the surface of the stator core 1310, and the winding 1330 is wound on the insulating frame 1320.
  • the stator assembly 1300 includes nine windings 1330.
  • the stator assembly 1300 may also include other numbers of windings 1330, such as three or six or twelve. Referring to Fig. 4, Fig. 7, Fig. 8, and Fig. 9, in this embodiment, a first assembly is defined.
  • the first assembly includes a stator core 1310, an insulating frame 1320, and a winding 1330, and the insulating frame 1320 covers the stator core. On at least part of the surface of the winding 1310 , the winding wire of the winding 1330 is wound on the insulating frame 1320 .
  • the stator assembly includes an inner housing 100.
  • the inner housing 100 is formed by insert injection molding at least with the first assembly body.
  • the inner housing 100 covers the stator core 1310, the insulating frame 1320 and the winding 1330 wound on the insulating frame 1320.
  • the inner housing 100 described above is an injection molded body.
  • the inner casing 100 has a rotor cavity 1011, or in other words, the walls forming the rotor cavity 1011 include the walls of the inner casing 100, or the inner casing 100 isolates the first assembly and the rotor cavity 1011, so that the fluid in the rotor cavity 1011 and the second Isolation of an assembly.
  • the pump shaft 16 can also be fixed with the inner housing 100 by injection molding, or in other words, the inner housing 100 can also be the first assembly and the pump shaft 16 as an insert injection molding, and the inner housing 100 has an assembly for accommodating part of the pump shaft 16.
  • the pump shaft 16 and the inner casing 100 are fixed by injection molding here.
  • the assembly hole of the pump shaft 16 described here can be a through hole or a blind hole.
  • the pump shaft 16 includes a The first fixing section 161 of the pump casing 1100 protrudes from the second fixing section 162, and the first end fixed to the rotor assembly 1200.
  • the inner casing 100 has a first assembly hole for accommodating the first fixing section 161 110 , the first fixing section 161 is injection molded and fixed to the inner casing 100 .
  • the first end part includes a distance extending inward from the end surface.
  • the "injection molding” here can be one injection molding, two injection moldings or more than two injection moldings, so that a set of molds can realize the inner shell 100, which helps to save costs.
  • the electric pump 1000 also includes a conductive member 1500, the conductive member 1500 includes a first connecting section 1510 and a second connecting section 1520, wherein the second connecting section 1520 is needle-shaped, and the second connecting section 1520 is used for To connect with the outside world, in this embodiment, the first connecting section 1510 of the conductive member 1500 is in contact with the stator core 1310, which is used for grounding the stator assembly 1300, which is beneficial to reduce the influence of the accumulated charge on the electric pump 1000, and is also beneficial to The electromagnetic compatibility of the electric pump 1000 is improved.
  • the conduction member 1500 is an integral part, of course, the conduction member 1500 may also consist of two parts or more than two parts.
  • the conductive member 1500 includes a first injection molding section 1540, which is connected to the first connecting section 1510, and the inner housing 100 has a first injection molding hole through which the first injection molding section 1540 passes, and the first injection molding hole is formed by a first injection molding
  • the section 1540 is formed by an insert, the first connecting section 1510 of the conducting element 1500 is located in the inner casing 100 , and a part of the conducting element 1500 , such as the second connecting section 1520 , is exposed outside the inner casing 100 .
  • the conduction member 1500 also includes a connecting portion 1530 . Along the axial direction of the electric pump 1000 , the connecting portion 1530 and the second connecting section 1520 are located on different sides of the inner casing 100 .
  • the connecting portion 1530 is connected to the first injection molding section 1540 .
  • the extension of the connecting portion 1530 The direction is perpendicular to the axis of the electric pump 1000, and the conductive member 1500 is provided with a connecting portion 1530 for changing the protruding position of the second connecting section 1520.
  • the second connecting section 1520 is larger than the first connecting section 1520
  • the connecting section 1510 is close to the pump shaft 16 .
  • the winding wire of the winding 1330 includes a first segment 1331, a second segment 1332 and a third segment 1333, wherein the second segment 1332 is located between the first segment 1331 and the third segment 1333, and the first segment 1331 is wound
  • the inner casing 100 has a second injection hole formed with the winding wire of the winding 1330 as an insert, or in other words, the winding is one of the inserts formed by injection molding of the inner casing 100, and the inner casing 100 has a
  • the winding wire protrudes from the second injection hole of the inner casing 100 , wherein the second section 1332 and the third section 1333 of the winding wire are exposed to the inner casing 100 , or the winding wire has a part protruding from the inner casing 100 .
  • the electric pump 1000 also includes a first housing 200 and pins 1400.
  • the first housing 200 is fixedly connected to the stator assembly 1300. Specifically, the first housing 200 is fixedly connected to the stator assembly 1300 through the inner housing 100.
  • the first housing The body 200 is fixedly connected with the pin 1400, the first housing 200 has a winding hole 240, the second section 1332 of the winding is located in the winding hole 240, the third section 1333 is exposed to the first housing 200, and the third section 1333
  • the connecting section is fixed and electrically connected to the wire hanging portion 1430 of the pin 1400 , and the stator core 1310 and the wire hanging portion 1430 of the pin 1400 are located on different sides of the first housing 200 .
  • the winding wire of the winding 1330 passes through the first housing 200, and then is fixed and electrically connected with the wire hanging part 1430 of the pin 1400, and the pin 1400 is fixedly connected with the first housing 200, which can simplify the winding of the winding 1330
  • the connection with the pin 1400 is convenient for assembly and also helps to simplify the structure of the electric pump 1000 .
  • the first housing 200 has a wire winding hole 240, the second section 1332 of the winding wire is located in the wire winding hole 240, and the third section 1333 of the winding wire Exposed to the first housing 200, the first housing 200 is fixed to the stator assembly 1300 by injection molding, specifically, the first housing 200 is fixed to the inner housing 100 by injection molding and then fixed to the stator assembly 1300 by injection molding, and the second section 1332 of the winding wire It is fixed with the first housing 200 by injection molding, and the winding hole 240 is formed by injection molding with the second section 1332 of the winding as an insert.
  • the conduction member 1500 includes a second injection molding section 1550, and the first housing 200 has a conduction hole 280 through which the second injection molding section 1550 passes. Since the connecting portion 1530 protrudes from the inner housing 100, the first housing 200 forms a There is a receiving groove 260 for accommodating the connecting part 1530; in addition, since the extending direction of the connecting part 1530 is perpendicular to the axial direction of the electric pump 1000, in order to prevent the connecting part 1530 from moving during injection molding, the second tooling is used to press the connecting part 1530, and the second tooling When the first housing 200 is formed by injection molding, it is an insert.
  • the first housing 200 After the injection molding of the first housing 200 is completed, the first housing 200 has a first accommodating hole 250 for accommodating the second tooling, and the first accommodating hole runs through the first housing 200 , the first accommodating hole has an opening on the wall forming the accommodating groove. Since the second fixing section 162 of the pump shaft 16 protrudes from the inner housing 100, the first housing 200 also uses the pump shaft 16 as an insert when injection molding, and the second fixing section 162 is fixed to the first housing 200 by injection molding.
  • a casing 200 has a second assembly hole 270 for receiving the second fixing section 162 .
  • the second fixed section 162 of the pump shaft 16 is fixed to the first casing 200 by injection molding
  • the first fixed section 161 of the pump shaft 16 is fixed to the inner casing 100 by injection molding, which is conducive to strengthening the fixing of the pump shaft 16 and the pump casing 1100 strength.
  • the pump housing 1100 also includes a pump cover 1110, the pump cover 1110 is sealed and fixed with the first housing 200, the pump cover 1110 has an impeller cavity 1012, an inlet and an outlet, and the inlet and the outlet are respectively connected to the The impeller cavity 1012 is connected, and the impeller 1210 is located in the impeller cavity 1012.
  • the outer wall of the inner casing 100 includes a first side wall 120 and a second side wall 130, wherein the first side The wall 120 is embedded into the first housing 200 during injection molding, or in other words, the first side wall 120 is wrapped in the first housing 200 , and the second side wall 130 is located in the impeller cavity 1012 .
  • the first casing 200 includes a bottom 210 and a side portion 220, wherein the bottom 210 of the first casing 200 has a winding hole 240, a pin hole 230 and a third injection hole for the conductive member 1500 to pass through, along the side of the electric pump 1000.
  • the side portion 220 extends from the bottom 210 toward the pump cover 1110 , the side portion 220 surrounds the first side wall 110 of the stator assembly 1300 , and the side portion 220 is sealingly connected with the first side wall 110 of the stator assembly 1300 .
  • the first casing 200 also includes a first sealing portion
  • the pump cover 1110 includes a second sealing portion, the first sealing portion and the second sealing portion are sealed and fixed, and the fixing methods include welding, bonding, etc., and the welding methods include laser welding, friction, etc.
  • the electric pump 1000 includes seals, the seals are respectively abutted against the first sealing part and the second sealing part, and the pump cover 1110 and the first housing 200 are fixedly connected by bolts. This helps to prevent fluid leakage in the pump lumen 1010 .
  • at least one of the first housing 200 and the first side wall 110 is provided with several recesses, the extending direction of the recesses intersects the axial direction of the electric pump 1000, preferably, the extending direction of the recesses is parallel to the direction of the electric pump 1000 The axial direction of 1000 is vertical.
  • the other of the first housing 200 and the first side wall 110 is a convex part, and these convex parts and concave parts cooperate with each other. , not only the sealing performance between the inner housing 100 and the first housing 200 can be enhanced, but also the fixing strength between the inner housing 100 and the first housing 200 can be enhanced.
  • the first housing 200 also includes a mounting portion 201 for mounting the electric pump 1000 .
  • the mounting portion 201 includes several holes, which may be threaded holes or through holes, which will not be described in detail.
  • the insertion pin 1400 includes a fixing part 1410 , a thread-hanging part 1430 and a needle part 1420 , and along the axial direction of the electric pump 1000 , the thread-hanging part 1430 is located between the needle part 1420 and the fixing part 1410 , the fixing part 1410 of the pin 1400 is closer to the stator core 1310 than the hanging part 1430 of the pin 1400, and the fixing part 1410, the hanging part 1430 and the needle part 1420 can be a one-piece structure or three separate structures fixed by welding.
  • the first housing 200 has a pin hole 230.
  • the pin hole 230 can be injection molded with the first tooling as an insert when the first housing 200 is injected.
  • the pin hole 230 can also be machined.
  • the pin hole 230 can be Through the first housing 200, it can also be a blind hole.
  • the fixing part 1410 of the pin 1400 is located in the pin hole 230, and the opening of the pin hole 230 faces away from the stator core 1310. Wall interference fit, the pin 1400 can also be bonded and fixed with the first housing 200, the fixing of the pin 1400 and the first housing 200 can reduce the damage when the electric pump 1000 is formed, if it can prevent the winding wire from breaking, it can also It can facilitate the positioning of the insertion pin 1400 .
  • the fixing part 1410 of the pin 1400 includes a toothed part 1411 and a raised part 1412, wherein, as shown in FIG.
  • the hanging part 1430 includes an extension part 1431 and a bending part 1432.
  • the extension part 1431 connects the fixing part 1410 and the needle part 1420.
  • the bending part 1432 is bent relative to the extension part 1431. There is a third section of the receiving part between the bending part 1432 and the extension part 1431.
  • the connection end of the third segment 1333 is fixed and electrically connected to the wire hanging part 1430 .
  • the winding hole 240 runs through the first housing 200
  • the stator core 1310 and the wire-hanging part 1430 of the pin 1400 are located on the opposite side of the first housing 200
  • the needle portion 1420 includes a vertical section 1421.
  • the extension direction of the vertical section 1421 is parallel to the axial direction of the electric pump 1000. Compared with the vertical or other angles between the needle portion 1420 and the axial direction of the electric pump 1000, the size of the electric pump 1000 can be reduced. radial size.
  • the needle part 1420 may also include a vertical section 1421 and a horizontal section 1422, wherein the extending direction of the vertical section 1421 is parallel to the axial direction of the electric pump 1000, and the extending direction of the horizontal section 1422 is parallel to the axial direction of the electric pump 1000.
  • the axial direction of 1000 is vertical, and along the axial direction of the electric pump 1000, the vertical section 1421 is closer to the hanging part 1430 than the horizontal section 1422. In this way, the direction of the joint part 400 of the electric pump 1000 can be adjusted according to actual needs, which is convenient for installation and improves the electric pump 1000. applicability.
  • the electric pump 1000 includes a second casing 300, the second casing 300 is formed by injection molding at least with pins 1400 and conductive elements 1500 as inserts, and the third section 1333 of the winding wire is also located at In the second housing 300, the second housing 300 is fixed with the pin 1400 and the first housing 200 by injection molding. It can be known that the second housing 300 and the first housing 200 are fixedly connected by injection molding; the second housing 300
  • the joint part 400 is included, and the joint part 400 is used for connecting with the outside world.
  • the joint part 400 has an accommodating cavity 410 , at least part of the needle part 1420 is located in the accommodating cavity 410 , and the needle part of the second connection section is located in the accommodating cavity 410 .
  • the pin 1400 only includes the vertical section 1421, and the joint part 400 is formed by injection molding.
  • the joint part 400 can also be an insert.
  • the joint part 400 is an insert
  • the second housing 300 is The joint portion 400, the pin 1400, and the conductive member 1500 are injection molded.
  • the pin 1400 includes a vertical section 1421 and a horizontal section 1422. At this time, the joint part 400 is a separate structure from the second housing 300, the joint part 400 is an insert, and the joint part 400 and the second housing 300 injection fixed.
  • the inner housing 100 is injection molded with the first assembly as an insert, the first assembly and the inner housing 100 are fixed by injection molding, the first housing 200 and the inner housing 100 are fixed by injection molding, and the second housing 300 The third section 1333 of the winding wire and the conductive element 1500 are used as insert injection molding.
  • the pump housing 1100 may not include the first housing 200, and the pin hole 230 is formed when the inner housing 100 is injected, and the pin 1400 is fixed to the inner housing 100, and the second housing The body 300 is injection-molded with the pin 1400 and the conductive element 1500 as inserts, and will not be described in detail.
  • the pump housing 1100 includes a pump cover 1110 , a first housing 200 and a second housing 300
  • the stator assembly includes an inner housing 100 , wherein the inner housing 100 , the first housing 200 and the second housing 300 Injection molding defines the inner housing 100, the first housing 200 and the second housing 300 as injection molding bodies
  • the electric pump 1000 includes a rotor assembly 1200, a stator assembly 1300, pins 1400 and an injection molding body, and the injection molding body is at least composed of a stator
  • the assembly 1300 and pin 1400 are formed by insert injection molding, the injection molding body covers the stator assembly 1300, the electric pump 1000 has a rotor cavity 1011, the wall forming the rotor cavity 1011 includes the inner wall of the injection molding body, at least part of the rotor assembly 1200 is located in the rotor cavity 1011,
  • the electric pump 1000 includes a joint part 400 , which is integrated with the injection molded body or fixed by injection molding.
  • the needle part 1420 of the insertion pin 1400 is located in the accommodating cavity 410 of the joint part 400 .
  • the injection molded body can be formed by one injection molding, or by two or more injection moldings.
  • the injection molded body is formed by three injection moldings, and the inner shell 100 is formed by the first injection molding, which is defined as the first injection molded body.
  • the shell 200 is the second injection molding, defined as the second injection molding body, and the third casing 300 is the third injection molding, and is defined as the third injection molding body.
  • the stator assembly 1300 and the pin 1400 are fixed by injection molding, the pump cover 1110 is sealed and fixed with the injection molding body, a part of the rotor assembly 1200 is located in the injection molding body, and the other part of the rotor assembly 1200 is located in the pump cover 1110.
  • Such an electric pump 1000 is simple in structure and runs Matching is also relatively simplified.
  • the injection-molded body can also be injection-molded twice, and the first shell 200 may not be needed, only the inner shell 100 and the second shell 300 need to be injection-molded separately, which will not be described in detail.
  • the first housing 200 may also be fixed to the inner housing 100 after injection molding, and the fixing method may be bonding or bolting, which will not be described in detail.
  • An embodiment of the present application also provides an assembly method of the electric pump 1000, which is applied to the electric pump 1000.
  • the electric pump 1000 includes a stator assembly 1300, pins 1400, a rotor assembly 1200, and a pump housing 1100.
  • the pump housing 1100 includes an injection molded body With the pump cover 1110, the assembly method of the electric pump 1000 includes:
  • the injection molded body is formed with the stator assembly 1300 and pins 1400 as inserts, and at the same time forms the rotor cavity 1011. After placing the rotor assembly 1200 in the rotor cavity 1011, it is fixedly connected with the pump cover 1110.
  • the assembly method of the above-mentioned electric pump 1000 is relatively simple.
  • the structure of the electric pump 1000 is also relatively simple.
  • the injection molded body includes a first injection molded body, a second injection molded body and a third injection molded body, and the injection molded body formed with the stator assembly 1300 and the pin 1400 as an insert at least includes:
  • the stator assembly 1300 is used as insert molding to form the first injection molding body; or, the stator assembly 1300 and the pump shaft 16 are used as insert injection molding to form the first injection molding body; or, the electric pump 1000 includes a conduction member 1500, the first of the conduction member 1500
  • the connecting section 1510 is in contact with the stator core 1310, and the stator assembly 1300, the pump shaft 16, and the conductive member 1500 are used as insert injection molding to form a first injection molding body;
  • Injection molding forms the second injection molded body; specifically, the second injection molded body is formed with the winding wire and the conductive member 1500 as an insert; thus, the second injection molded body has a winding hole 240 for the winding wire to pass through, and the second injection molded body has a winding hole 240 for the wire to pass through.
  • forming the second injection molded body by injection molding also includes: forming the pin hole 230 with the first tooling as an insert, and forming the first receiving hole 250 with the second tooling as an insert; wherein the second tooling is used to limit the conductive member 1500
  • the connecting part 1530 prevents the connecting part 1530 from moving when the first casing 200 is injected.
  • the second injection molded body and the first injection molded body can be fixed during injection molding; or the second injection molded body can be formed first, and then the second injection molded body can be fixedly connected with the first injection molded body, and the fixing methods include welding, bonding or bolting.
  • Injection molding to form a third injection molding body specifically, using the pin 1400 and the conductive member 1500 as insert injection molding to form a third injection molding body;
  • the assembly method of the electric pump 1000 includes: fixing the pin 1400 to the pin hole 230 , and fixing the winding to the thread hanging part 1430 of the pin 1400 .
  • the injection molding to form the second injection molding body includes the injection molding joint part 400 .
  • the assembly method of the electric pump 1000 further includes: forming the joint part 400;
  • the injection molding of the second injection-molded body includes: forming the second injection-molded body by insert-molding the joint part 400 , the pin 1400 and the conductive member 1500 as inserts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

电动泵(1000)，包括第一壳体(200)，定子组件(1300)和插针(1400)，第一壳体(1000)以定子组件(1300)为嵌件注塑成形并与定子组件(1300)注塑固定，并形成放置插针(1400)的插针孔(230)，这样有利于简化泵壳体(1100)、定子组件(1300)以及插针(1400)的固定。

Description

一种电动泵
本申请要求于2021年12月10日提交中国专利局、申请号为202111504942.X、发明名称为“一种电动泵”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
本发明涉及一种流体泵，具体涉及一种电动泵。
背景技术
电动泵包括定子组件、泵壳体以及插针，插针用于与外界连接，进而为电动泵提供能源或者驱动信号或者控制信号，泵壳体、定子组件以及插针的固定相对复杂，提供一种简单的泵壳体、定子组件以及插针的固定方式是一个技术问题。
发明内容
本申请的目的在于提供一种电动泵，以有利于简化泵壳体、定子组件以及插针的固定。
为实现上述目的，本申请的一种实施方式采用如下技术方案：一种电动泵，包括定子组件、第一壳体和插针，所述定子组件包括定子铁芯、绝缘架和绕组，所述绝缘架包覆于所述定子铁芯的至少部分表面，所述绕组的绕线缠绕于所述绝缘架；所述第一壳体包覆至少部分所述定子组件，所述第一壳体至少以所述定子组件为嵌件注塑成形于所述定子组件注塑固定，所述第一壳体具有注塑成形的插针孔，所述插针的固定部位于所述插针孔，所述绕线与所述插针的挂线部固定且电连接。
本申请的另一种实施方式提供一种电动泵的组装方法，应用于上述的电动泵，电动泵包括定子组件、插针、转子组件和泵壳体，泵壳体包括注塑体和泵盖，所述电动泵组装方法包括：
以所述定子组件和所述插针为嵌件形成所述注塑体；
将所述转子组件放置于所述注塑体的转子腔；
固定连接所述泵盖和所述注塑体。本申请提供的电动泵及电动泵组装方法，第一壳体以定子组件为嵌件注塑成形并与定子组件注塑固定，并形成放置插针的插针孔，这样有利于简化泵壳体、定子组件以及插针的固定。
附图说明
图1是本发明电动泵的第一种实施方式的一种剖面结构示意图；
图2是图1中电动泵的一种分解结构示意图；
图3是图1中电动的正视示意图；
图4是图3沿A-A的剖面示意图；
图5是第一壳体的一种视角的结构示意图；
图6是第一壳体的另一种视角的结构示意图；
图7是定子组件的立体结构示意图；
图8是定子组件与内壳体组合的一种视角的结构示意图；
图9是定子组件与内壳体组合的另一种视角的结构示意图；
图10是插针的立体结构示意图；
图11是第一壳体、插针、绕线的配合示意图；
图12是本发明电动泵的第二种实施方式的一种剖面结构示意图；
图13是图12去除第二壳体时的结构示意图；
图14是图13去除接头部的结构示意图。
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：
以下实施例中的电动泵能够为汽车热管理系统的工作介质提供流动动力，工作介质可以为包括50％乙二醇水溶液或者清水，当然工作介质也可以为其他的物质。
参见图1-图4，电动泵1000包括泵壳体1100、转子组件1200、定子组件1300、泵轴16，至少部分转子组件1200套设于泵轴16的外周，转子组件1200与泵轴16转动连接；泵壳体1100能够形成泵内腔1010，转子组件1200位于泵内腔1010，泵内腔1010包括转子腔1011和叶轮腔1012，转子腔1011和叶轮腔1012连通；转子组件1200包括转子1220和叶轮1210，在本实施方式，转子1220包括永磁体，其中，至少部分转子1220 位于转子腔1011，叶轮1210位于叶轮腔1012。电动泵1000工作时，通过控制定子组件1300的电流进而控制定子组件1300产生的激励磁场，转子组件1200在激励磁场的作用下围绕泵轴16转动。
参见图7，定子组件1300包括定子铁芯1310、绝缘架1320和绕组1330，绕组1330的数量至少为三个，绝缘架1320包覆于定子铁芯1310的至少部分表面，绕组1330缠绕于绝缘架1320，在一个具体的实施方式，定子组件1300包括九个绕组1330，当然，定子组件1300也可以包括其他数量的绕组1330，譬如三个或六个或十二个等其他数量。参见图4、图7、图8、图9，本实施例中，定义第一装配体，第一装配体包括定子铁芯1310、绝缘架1320以及绕组1330，绝缘架1320包覆于定子铁芯1310的至少部分表面，绕组1330的绕线缠绕于绝缘架1320。定子组件包括内壳体100，内壳体100至少以第一装配体为嵌件注塑形成，内壳体100包覆定子铁芯1310、绝缘架1320以及缠绕于绝缘架1320的绕组1330，这里所述的内壳体100为注塑体。内壳体100具有转子腔1011，或者说，形成转子腔1011的壁包括内壳体100的壁，或者内壳体100隔离第一装配体和转子腔1011，实现转子腔1011内的流体与第一装配体的隔离。当然，泵轴16也可以与内壳体100注塑固定，或者说，内壳体100也可以第一装配体和泵轴16为嵌件注塑成形，内壳体100具有容纳部分泵轴16的装配孔，这里泵轴16与内壳体100注塑固定，这里所述的泵轴16的装配孔可以是通孔，也可以是盲孔，在本实施方式，泵轴16包括与内壳体100固定的第一固定段161、凸出泵壳体1100的第二固定段162、与转子组件1200固定的第一端部，相应地，内壳体100具有容纳第一固定段161的第一装配孔110，第一固定段161与内壳体100注塑固定。这里所述第一端部包括端面向内延伸的一段距离，这里的“注塑成形”可以是一次注塑，也可以是两次注塑或者两次以上的注塑，这样一套模具即可实现内壳体100，从而有利于节省成本。
参见图7至图8，电动泵1000还包括传导件1500，传导件1500包括第一连接段1510和第二连接段1520，其中，第二连接段1520为针状，第二连接段1520用于与外界连接，本实施例中，传导件1500的第一连接段1510与定子铁芯1310接触，用于定子组件1300接地，进而有利于减小积 累电荷对电动泵1000的影响，同时还有利于提高电动泵1000的电磁兼容性。参见图7，本实施例中，传导件1500为一整体件，当然，传导件1500也可以包括由两个零部件或者两个以上的零部件组成。传导件1500包括第一注塑段1540，第一注塑段1540与第一连接段1510连接，内壳体100具有供第一注塑段1540穿过的第一注塑孔，第一注塑孔以第一注塑段1540为嵌件形成，传导件1500的第一连接段1510位于内壳体100内，传导件1500的一部分，如第二连接段1520，裸露于内壳体100外。传导件1500还包括连接部1530，沿电动泵1000的轴向，连接部1530与第二连接段1520位于内壳体100不同侧，连接部1530与第一注塑段1540连接，连接部1530的延伸方向与电动泵1000轴线垂直，传导件1500设置连接部1530，用于改变第二连接段1520的伸出位置，在本实施方式，沿电动泵1000的径向，第二连接段1520比第一连接段1510靠近泵轴16。
请参阅图7，绕组1330的绕线包括第一段1331、第二段1332和第三段1333，其中，第二段1332位于第一段1331、第三段1333之间，第一段1331缠绕于绝缘架1320，内壳体100具有以绕组1330的绕线为嵌件形成的第二注塑孔，或者说，绕线为注塑形成内壳体100的嵌件之一，内壳体100具有供绕线伸出内壳体100的第二注塑孔，其中，绕线的第二段1332、第三段1333裸露于内壳体100，或者说绕线具有伸出内壳体100的部分。
请参阅图2、图11及图4。电动泵1000还包括第一壳体200和插针1400，第一壳体200与定子组件1300固定连接，具体地，第一壳体200通过内壳体100与定子组件1300固定连接，第一壳体200与插针1400固定连接，第一壳体200具有绕线孔240，绕线的第二段1332位于绕线孔240，第三段1333裸露于第一壳体200，第三段1333的连接段与插针1400的挂线部1430固定且电连接，定子铁芯1310、插针1400的挂线部1430位于第一壳体200的不同侧。这样，绕组1330的绕线穿过第一壳体200，进而与插针1400的挂线部1430固定且电连接，插针1400与第一壳体200固定连接，这样可以简化绕组1330的绕线与插针1400的连接，方便组装，也有利于简化电动泵1000的结构。
在一个具体的实施方式，请参阅图6、图8及图11，第一壳体200具有绕线孔240，绕线的第二段1332位于绕线孔240内，绕线的第三段1333 裸露于第一壳体200，第一壳体200与定子组件1300注塑固定，具体地，第一壳体200与内壳体100注塑固定进而与定子组件1300注塑固定，绕线的第二段1332与第一壳体200注塑固定，绕线孔240以绕线的第二段1332为嵌件注塑成形。传导件1500包括第二注塑段1550，第一壳体200具有供第二注塑段1550穿过的传导孔280，由于连接部1530凸出于内壳体100，注塑时，第一壳体200形成有容纳连接部1530的容纳槽260；另外，由于连接部1530的延伸方向与电动泵1000轴向垂直，为防止连接部1530在注塑时移动，利用第二工装压紧连接部1530，第二工装在注塑形成第一壳体200时为嵌件，第一壳体200注塑完成后，第一壳体200具有容纳第二工装的第一容纳孔250，第一容纳孔贯穿所第一壳体200，第一容纳孔在形成容纳槽的壁具有开口。由于泵轴16的第二固定段162凸出于内壳体100，第一壳体200注塑成形时也以泵轴16为嵌件，第二固定段162与第一壳体200注塑固定，第一壳体200具有容纳第二固定段162的第二装配孔270。这样泵轴16的第二固定段162与第一壳体200注塑固定，泵轴16的第一固定段161与内壳体100注塑固定，这样有利于增强泵轴16与泵壳体1100的固定强度。
请参阅图1-图4、图8，泵壳体1100还包括泵盖1110，泵盖1110与第一壳体200密封固定，泵盖1110具有叶轮腔1012、进口和出口，进口和出口分别与叶轮腔1012连通，叶轮1210位于叶轮腔1012，在本实施方式，沿电动泵1000的轴向，内壳体100的外侧壁包括第一侧壁120和第二侧壁130，其中，第一侧壁120注塑时嵌入第一壳体200，或者说，第一侧壁120包覆于第一壳体200内，第二侧壁130位于叶轮腔1012。第一壳体200包括底部210和侧部220，其中，第一壳体200的底部210具有绕线孔240、插针孔230以及供传导件1500通过的第三注塑孔，沿电动泵1000的轴向，侧部220自底部210朝向泵盖1110延伸，侧部220环绕定子组件1300的第一侧壁110，侧部220与定子组件1300的第一侧壁110密封连接。第一壳体200还包括第一密封部，泵盖1110包括第二密封部，第一密封部与第二密封部密封固定，固定方式包括焊接、粘接等方式，焊接方式包括激光焊接、摩擦焊接以及超声波焊接，不再详细描述；或者，电动泵1000包括密封件，密封件分别抵接于第一密封部以及第二密封部，泵盖1110 与第一壳体200通过螺栓固定连接。这样有利于防止泵内腔1010内的流体泄露。为增强密封，进一步的，第一壳体200和第一侧壁110的至少其中之一设置若干凹部，凹部的延伸方向与电动泵1000的轴向相交，优选的，凹部的延伸方向与电动泵1000的轴向垂直，可以知道，第一壳体200以内壳体100为嵌件注塑时，第一壳体200和第一侧壁110的其中另一个为凸部，这些凸部和凹部相互配合，不仅可以增强内壳体100与第一壳体200之间的密封性能，也可以增强内壳体100与第一壳体200的固定强度。
第一壳体200还包括安装部201，安装部201用于电动泵1000的安装，具体地，安装部201包括若干孔，这些孔可以是螺纹孔也可以是通孔，不再详细描述。
请参阅图2、图10以及图11，插针1400包括固定部1410、挂线部1430和针部1420，沿电动泵1000的轴向，挂线部1430位于针部1420和固定部1410之间，插针1400的固定部1410比插针1400的挂线部1430靠近定子铁芯1310，固定部1410、挂线部1430和针部1420可以是一体结构或者三者分体结构通过焊接固定。第一壳体200具有插针孔230，插针孔230可以在第一壳体200注塑时以第一工装为嵌件注塑成形，插针孔230也可以机械加工而成，插针孔230可以贯穿第一壳体200，也可以是盲孔，插针1400的固定部1410位于插针孔230，插针孔230的开口背向定子铁芯1310，插针1400可以与插针孔230的孔壁过盈配合，插针1400也可以与第一壳体200粘接固定，插针1400与第一壳体200的固定，可以减少电动泵1000成形时的损伤，如可以防止绕线断裂，也可以方便插针1400的定位。在一个具体的实施方式，插针1400的固定部1410包括齿状部1411和凸起部1412，其中，如图10所示，凸起部1412相对齿状部1411凸起，沿电动泵1000的轴向，凸起部1412比齿状部1411靠近定子铁芯1310，齿状部1411位于插针孔230，部分凸起部1412位于插针孔230，凸起部1412具有对插针1400限位的作用。挂线部1430包括延伸部1431和弯曲部1432，延伸部1431连接固定部1410和针部1420，弯曲部1432相对延伸部1431折弯，弯曲部1432和延伸部1431之间具有容纳部分第三段1333的空间，第三段1333的连接端与挂线部1430固定且电连接。在一个更为具体的实施方式，沿电动泵1000的轴向，绕线孔240贯穿第一壳体200， 定子铁芯1310、插针1400的挂线部1430位于第一壳体200的相背两侧，针部1420包括竖段1421，竖段1421的延伸方向与电动泵1000的轴向平行，相比于针部1420与电动泵1000的轴向垂直或者其他角度，可以减小电动泵1000的径向尺寸。另外，请参阅图12及图13，针部1420还可以包括竖段1421和横段1422，其中，竖段1421的延伸方向与电动泵1000的轴向平行，横段1422的延伸方向与电动泵1000的轴向垂直，沿电动泵1000的轴向，竖段1421比横段1422靠近挂线部1430，这样可以根据实际需要调整电动泵1000的接头部400方向，方便安装，也提高电动泵1000的适用性。
请参阅图2、图12及与13，电动泵1000包括第二壳体300，第二壳体300至少以插针1400、传导件1500为嵌件注塑形成，绕线的第三段1333也位于第二壳体300内，第二壳体300与插针1400、与第一壳体200注塑固定，可以知道，第二壳体300与第一壳体200通过注塑固定连接；第二壳体300包括接头部400，接头部400用于与外界连接，接头部400具有容纳腔410，至少部分针部1420位于容纳腔410，第二连接段的针部位于容纳腔410。在一个具体的实施方式，插针1400仅包括竖段1421，接头部400通过注塑成形，当然接头部400也可以是嵌件，在注塑时，接头部400为嵌件，第二壳体300以接头部400、插针1400、传导件1500注塑成形。在另一个具体的实施方式，插针1400包括竖段1421和横段1422，这时接头部400与第二壳体300分体结构，接头部400为嵌件，接头部400与第二壳体300注塑固定。
在上述实施方式，内壳体100以第一装配体为嵌件注塑成形，第一装配体与内壳体100注塑固定，第一壳体200与内壳体100注塑固定，第二壳体300的以绕线的第三段1333以及传导件1500为嵌件注塑成形。在电动泵1000的又一实施方式，泵壳体1100也可以不包括第一壳体200，在内壳体100注塑时形成插针孔230，插针1400与内壳体100固定，第二壳体300以插针1400以及传导件1500为嵌件注塑成形，不再详细描述。
可以知道，泵壳体1100包括泵盖1110、第一壳体200和第二壳体300，定子组件包括内壳体100，其中，内壳体100、第一壳体200和第二壳体300注塑成形，定义内壳体100、第一壳体200和第二壳体300为注塑体， 这样，电动泵1000包括转子组件1200、定子组件1300、插针1400以及注塑体，注塑体至少以定子组件1300和插针1400为嵌件注塑形成，注塑体包覆定子组件1300，电动泵1000具有转子腔1011，形成转子腔1011的壁包括注塑体的内壁，至少部分转子组件1200位于转子腔1011，电动泵1000包括接头部400，接头部400与注塑体一体结构或者注塑固定，插针1400的针部1420位于接头部400的容纳腔410。注塑体可以一次注塑成形，也可以二次或者多次注塑成形，如在本实施方式，注塑体经三次注塑成形，内壳体100为第一次注塑成形，定义为第一注塑体，第一壳体200为第二次注塑成形，定义为第二注塑体，第三壳体300为第三次注塑成形，定义为第三注塑体。定子组件1300、插针1400通过注塑固定，泵盖1110与注塑体密封固定，转子组件1200的一部分位于注塑体内，转子组件1200的另一部分位于泵盖1110内，这样的电动泵1000结构简单并且转配也相对简化。注塑体也可以两次注塑成形，第一壳体200可以不需要，仅需要分别注塑形成内壳体100和第二壳体300，不再详细描述。
在另一个实施方式，第一壳体200也可以注塑成形后与内壳体100固定，固定方式可以是粘接或者通过螺栓连接，不再详细描述。
本申请的一个实施方式还提供一种电动泵1000组装方法，应用于电动泵1000，电动泵1000包括定子组件1300、插针1400、转子组件1200和泵壳体1100，泵壳体1100包括注塑体和泵盖1110，电动泵1000组装方法包括：
以定子组件1300和插针1400为嵌件形成注塑体；
将转子组件1200放置于注塑体的转子腔1011；
固定连接泵盖1110和注塑体。
注塑体以定子组件1300和插针1400为嵌件形成，并同时形成转子腔1011，将转子组件1200放置于转子腔1011后与泵盖1110固定连接，上述电动泵1000组装方法相对简单，这样形成的电动泵1000结构也相对简单。
在本实施方式，注塑体包括第一注塑体、第二注塑体和第三注塑体，以定子组件1300和插针1400为嵌件形成注塑体至少包括：
以定子组件1300为嵌件注塑形成第一注塑体；或者，以定子组件1300、泵轴16为嵌件注塑形成第一注塑体；或者，电动泵1000包括传导件1500， 传导件1500的第一连接段1510与定子铁芯1310接触，以定子组件1300、泵轴16、传导件1500为嵌件注塑形成第一注塑体；
注塑形成第二注塑体；具体地，以绕线和传导件1500为嵌件形成第二注塑体；因而，第二注塑体具有供绕线穿过的绕线孔240，第二注塑体具有供传导件1500穿过的第三注塑孔；在泵轴16具有凸出第一注塑体的部分时，泵轴16的凸出部分也为形成第二注塑体的嵌件；
进一步的，注塑形成第二注塑体还包括：以第一工装为嵌件形成插针孔230，以第二工装为嵌件形成第一容纳孔250；其中第二工装用于限位传导件1500的连接部1530，防止第一壳体200注塑时连接部1530移动。
第二注塑体与第一注塑体可以注塑时固定；也可以先成形第二注塑体，然后将第二注塑体与第一注塑体固定连接，固定方式包括焊接、粘接或者螺栓固定。
注塑形成第三注塑体，具体地，以插针1400和传导件1500为嵌件注塑形成第三注塑体；
在注塑形成第三注塑体之前，电动泵1000组装方法包括：将插针1400固定于插针孔230，将绕线固定于插针1400的挂线部1430。
插针1400包括竖段1421时，注塑形成第二注塑体包括注塑成形接头部400。
插针1400包括竖段1421和横段1422时，电动泵1000组装方法还包括：成形接头部400；
这时注塑成形第二注塑体包括：以接头部400、插针1400和传导件1500为嵌件注塑形成第二注塑体。
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 (14)

  1. 一种电动泵，包括定子组件、第一壳体和插针，所述定子组件包括定子铁芯、绝缘架和绕组，所述绝缘架包覆于所述定子铁芯的至少部分表面，所述绕组的绕线缠绕于所述绝缘架；所述第一壳体包覆至少部分所述定子组件，所述第一壳体至少以所述定子组件为嵌件注塑成形或者所述第一壳体与所述定子组件分体设置且固定连接，所述第一壳体具有插针孔，所述插针的固定部位于所述插针孔，所述绕线与所述插针的挂线部固定且电连接。
  2. 根据权利要求1所述的电动泵，其特征在于，所述第一壳体与所述定子组件分体设置，所述插针的固定部位于所述插针孔，所述插针孔的开口背向所述定子铁芯；沿所述电动泵的轴向，所述定子铁芯、所述插针的挂线部位于所述第一壳体的相背两侧，所述插针的固定部比所述插针的挂线部靠近所述定子铁芯，所述绕线孔贯穿所述第一壳体。
    或者，所述第一壳体至少以所述定子组件为嵌件注塑成形，所述第一壳体具有注塑成形的插针孔，所述插针的固定部位于所述插针孔，所述绕线与所述插针的挂线部固定且电连接。
  3. 根据权利要求2所述的电动泵，其特征在于，所述插针的固定部包括齿状部和凸起部，所述凸起部相对所述齿状部凸起，沿所述电动泵的轴向，所述凸起部比所述齿状部靠近所述定子铁芯，所述齿状部位于所述插针孔，所述凸起部的尺寸大于所述插针孔的开口尺寸。
  4. 根据权利要求3所述的电动泵，其特征在于，所述挂线部包括延伸部和弯曲部，所述延伸部连接所述固定部和针部，所述弯曲部相对所述延伸部折弯，所述弯曲部和所述延伸部之间具有容纳所述绕线的连接段的空间。
  5. 根据权利要求1-4任一所述的电动泵，其特征在于，所述绕组的绕线包括第一段、第二段和第三段，所述第一段缠绕于所述绝缘架；所述第一壳体具有以所述第二段为嵌件注塑形成的绕线孔，所述第三段的连接段与所述插针的挂线部固定且电连接。
  6. 根据权利要求5所述的电动泵，其特征在于，所述电动泵还包括传导件，所述传导件包括第一连接段、第二连接段、第二注塑段和连接部， 所述注塑段与所述连接部、所述第二连接段连接，所述第一连接段与所述定子铁芯接触，所述第一壳体具有以所述第二注塑段为嵌件形成的传导孔，所述连接部的延伸方向与所述电动泵的轴向垂直，所述第一壳体具有以所述连接部为嵌件注塑形成的容纳槽，所述第一壳体具有第一容纳孔，所述第一容纳孔贯穿所第一壳体，所述第一容纳孔在形成所述容纳槽的壁具有开口。
  7. 根据权利要求6所述的电动泵，其特征在于，所述第一壳体包括底部和侧部，所述第一壳体的底部具有所述绕线孔、所述插针孔以及所述传导孔，沿所述电动泵的轴向，所述侧部自所述底部延伸；
    所述定子组件包括内壳体，所述内壳体以所述定子铁芯、绝缘架以及绕组为嵌件注塑成形，所述内壳体包括第一侧壁，所述侧部环绕所述第一侧壁，所述侧部与所述定子组件的第一侧壁密封连接。
  8. 根据权利要求1-7任一项所述的电动泵，其特征在于，所述电动泵包括第二壳体，所述第二壳体与所述第一壳体的底部注塑固定，所述第二壳体至少以所述插针、所述传导件的第二连接段为嵌件注塑成形；所述电动泵还包括接头部，所述接头部是所述第二壳体的一部分或者与所述第二壳体注塑固定，所述接头部具有容纳腔，所述插针的针部以及所述传导件的第二连接段的针段位于所述容纳腔。
  9. 根据权利要求8所述的电动泵，其特征在于，所述针部包括竖段，所述竖段延伸方向与所述电动泵的轴向平行，所述接头部是所述第二壳体的一部分，所述接头部以所述针部为嵌件注塑形成，所述容纳腔的开口方向与所述电动泵的轴向平行；
    或者，所述针部包括竖段和横段，所述竖段延伸方向与所述电动泵的轴向平行，所述横段延伸方向与所述电动泵的轴向垂直，所述接头部与所述第二壳体注塑固定，所述第二壳体以所述针部、所述为嵌件注塑形成，所述容纳腔的开口方向与所述电动泵的轴向垂直。
  10. 一种电动泵的组装方法，应用于权利要求1-9任一所述的电动泵，电动泵包括定子组件、插针、转子组件和泵壳体，泵壳体包括注塑体和泵盖，所述电动泵组装方法包括：
    以所述定子组件和所述插针为嵌件形成所述注塑体；
    将所述转子组件放置于所述注塑体的转子腔；
    固定连接所述泵盖和所述注塑体。
  11. 根据权利要求10所述的组装方法，其特征在于，所述注塑体包括第一注塑体、第二注塑体和第三注塑体，以定子组件和插针为嵌件形成注塑体至少包括：
    以所述定子组件为嵌件注塑形成第一注塑体；或者，所述电动泵包括泵轴，以所述定子组件、泵轴为嵌件注塑形成第一注塑体；或者，所述电动泵包括传导件，所述传导件的第一连接段与所述定子铁芯接触，以所述定子组件、泵轴、传导件为嵌件注塑形成第一注塑体；
    注塑形成第二注塑体：以所述绕组的绕线和传导件为嵌件形成第二注塑体；或者，所述电动泵包括泵轴，在所述泵轴具有凸出第一注塑体的部分时，以所述泵轴的凸出部分、绕线和传导件为嵌件形成第二注塑体；
    注塑形成所述第三注塑体：以所述插针和所述传导件为嵌件注塑形成所述第三注塑体。
  12. 根据权利要求11所述的组装方法，其特征在于，注塑形成所述第二注塑体还包括：以第一工装为嵌件形成插针孔，以第二工装为嵌件形成第二容纳孔。
  13. 根据权利要求12所述的组装方法，其特征在于，在注塑形成第三注塑体之前，所述电动泵组装方法包括：将所述插针固定于所述插针孔，将所述绕线固定于插针的挂线部。
  14. 根据权利要求13所述的组装方法，其特征在于，所述插针包括竖段时，注塑形成所述第二注塑体包括注塑成形所述接头部；
    或者，所述插针包括竖段和横段时，所述电动泵组装方法还包括：成形所述接头部；注塑成形所述第二注塑体包括：以所述接头部、所述插针和所述传导件为嵌件注塑形成所述第二注塑体。
PCT/CN2022/137935 2021-12-10 2022-12-09 一种电动泵 WO2023104189A1 (zh)

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