CN116928055A - Electric pump and method for manufacturing electric pump - Google Patents
Electric pump and method for manufacturing electric pump Download PDFInfo
- Publication number
- CN116928055A CN116928055A CN202210330816.5A CN202210330816A CN116928055A CN 116928055 A CN116928055 A CN 116928055A CN 202210330816 A CN202210330816 A CN 202210330816A CN 116928055 A CN116928055 A CN 116928055A
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- China
- Prior art keywords
- injection molding
- assembly
- electric pump
- molding body
- connecting plate
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title description 7
- 238000001746 injection moulding Methods 0.000 claims abstract description 130
- 238000004804 winding Methods 0.000 claims abstract description 71
- 238000000465 moulding Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 14
- 239000007924 injection Substances 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000007789 sealing Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 6
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- 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
- H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application discloses an electric pump, which comprises a stator assembly and a connecting plate assembly, wherein the stator assembly comprises a stator winding, the stator winding comprises a stator iron core and a winding, the connecting plate assembly comprises a connecting plate and a conductive piece, the connecting plate is in limit connection or fixed connection with the stator winding, the conductive piece comprises a first connecting part, a second connecting part and a third connecting part, the first connecting part is in limit connection or fixed connection with the connecting plate, the second connecting part is electrically connected with the winding, the third connecting part is used for being connected with an external power supply part, the electric pump also comprises an injection molding body, the injection molding body is formed by injection molding at least taking the stator winding and the connecting plate assembly as inserts, the electric pump is provided with a rotor cavity, and the wall surface corresponding to the rotor cavity comprises the inner wall of the injection molding body. The application also discloses a manufacturing method of the electric pump, and in this way, the structure of the electric pump is facilitated to be simplified.
Description
[ field of technology ]
The present application relates to a fluid pump, and more particularly, to an electric pump.
[ background Art ]
The electric pump comprises a stator assembly, a pump housing and a contact pin, wherein the contact pin is used for being connected with the outside, so that energy sources or driving signals or control signals are provided for the electric pump, the pump housing comprises a plurality of sub-components, and the sub-components are required to be connected or sealed, so that the structure of the electric pump is relatively complex, and the assembly is relatively complex. Therefore, it is a technical problem to provide an electric pump with a simple structure.
[ application ]
The application aims to provide an electric pump and a manufacturing method thereof, which are beneficial to simplifying the electric pump and the manufacturing method thereof.
In order to achieve the above object, an embodiment of the present application adopts the following technical scheme: the utility model provides an electric pump, including stator module and connecting plate subassembly, stator module includes stator winding, stator winding includes stator core and wire winding, connecting plate subassembly includes connecting plate and electrically conductive piece, connecting plate and the spacing connection of stator winding or fixed connection, electrically conductive piece includes first connecting portion, second connecting portion and third connecting portion, first connecting portion communicate with second connecting portion and third connecting portion respectively, first connecting portion and connecting plate spacing connection or fixed connection, second connecting portion are connected with the wire winding electricity, third connecting portion are used for being connected with external power supply portion, the electric pump still includes the injection molding body, the injection molding body is formed for the inserts with stator winding at least, connecting plate subassembly, the cladding stator winding of injection molding body and at least part connecting plate subassembly, at least part third connecting portion is outside of injection molding body, the electric pump has the rotor chamber, the wall that the rotor chamber corresponds includes the inner wall of injection molding body.
In another embodiment of the present application, a method for manufacturing an electric pump is further provided, wherein at least the stator winding and the connection plate assembly are used as a first assembly, at least the first assembly is used as an insert injection molding to form the injection molding body, and a side wall corresponding to the rotor cavity includes an inner wall of the injection molding body.
In the scheme of the application, the injection molding body is formed by injection molding at least the stator winding and the connecting plate assembly as inserts, and the injection molding body covers the stator winding and at least part of the connecting plate assembly, and at least part of the third connecting part is positioned outside the injection molding body, so that the structure of the electric pump is facilitated to be simplified. The manufacturing method of the electric pump disclosed by the application is beneficial to simplifying the production and manufacturing process of the electric pump.
[ description of the drawings ]
FIG. 1 is a schematic diagram of one orientation of one embodiment of an electric pump of the present application;
FIG. 2 is a schematic illustration of a cross-sectional view of the motor pump of FIG. 1 in section A-A;
FIG. 3 is a schematic illustration of one orientation of one embodiment of a stator assembly of the electric pump of FIG. 2;
FIG. 4 is an assembled schematic view of one embodiment of the connection plate assembly mounted to the stator windings in the configuration of the electric pump of FIG. 2;
FIG. 5 is an exploded schematic view of the electric pump of FIG. 2;
FIG. 6 is a schematic view of the cross-sectional structure B-B in FIG. 5;
FIG. 7 is a schematic illustration of an assembly of the connector, the connection plate assembly and the stator windings of the alternative embodiment of FIG. 2;
FIG. 8 is a schematic view of the structure of a first injection molded body and a second injection molded body in an embodiment of the electric pump of FIG. 2;
FIG. 9 is a schematic view of a cross-sectional structure of the electric pump C-C shown in FIG. 2;
in the accompanying drawings: 100: an electric pump; 10: a stator assembly; 101: a stator winding; 1011: a stator core; 1011a: wire passing grooves; 1011b: stator teeth; 1012: an insulating frame; 1013: winding; 1013a: a phase line leading-out end; 11: a rotor assembly; 12: an impeller assembly; 13: a pump housing; 131: an injection molding body; 1311: a first injection body; 1311a: an inner concave portion; 1311b: a first section; 1311c: a second section; 1311d: a ring groove part; 1312: a second injection body; 1312a: a boss; 1312b: a flange portion; 1312c: a main body portion; 1312d: a third section; 132: an impeller cavity cover; 14: a connecting plate assembly; 141: a connecting plate; 1411: a conduction part; 142: a conductive member; 1421: a first connection portion; 1422: a second connecting portion; 1423: a third connecting portion; 1423a: a first embedding part; 1423b: a power supply connection part; 143: a grounding member; 1431: an abutting portion; 1432: a second embedding part; 1433: a third embedding part; 1434: an extension; 15: a pump shaft; 151: a fixing part; 152: a mounting part; 16: a plug-in component; 1001: a first reference surface; 1002: a second reference surface; 20: a rotor cavity; 30: an impeller cavity;
[ detailed description ] of the application
The application is further described with reference to the accompanying drawings and specific examples:
the following detailed description of the application refers to the accompanying drawings. First, it should be noted that, in the present specification, terms of upper, lower, left, right, front, rear, inner, outer, top, bottom, and the like are defined with respect to the configurations shown in the corresponding drawings, and are relative concepts, so that they may be changed according to different positions and different usage states. Therefore, these and other directional terms should not be construed as limiting terms.
Referring to fig. 1 to 3, the present application provides an electric pump 100 including a stator assembly 10, a rotating assembly including an impeller assembly 12 and a rotor assembly 11, a connection plate assembly 14, a pump shaft 15, and a pump housing 13, the rotor assembly 11 being fixedly connected to the impeller assembly 12. The stator assembly 10 includes a stator winding 101, the stator winding 101 further including a stator core 1011 and windings 1013. The pump housing 13 includes an injection molding body 131 and an impeller cavity cover 132, the injection molding body 131 comprises an inner cavity, the stator assembly 10 is located in the inner cavity, the inner cavity is divided into a rotor cavity 20, the rotor cavity 20 can be provided with working medium to flow through, one end of the pump shaft 15 is fixedly connected with a wall surface corresponding to the rotor cavity 20 in a sealing mode or in a limiting mode, the other end of the pump shaft 15 is located at least partially in the rotor cavity 20, the connecting plate assembly 14 comprises a connecting plate 141 and a conductive piece 142, the connecting plate 141 is fixedly connected with the stator winding 101 in a limiting mode, the conductive piece 142 is fixedly connected with the connecting plate 141 in a limiting mode, and the conductive piece 142 is electrically connected with the winding 1013 at least through the connecting plate 141. Of course, as other implementations, the pump housing 13 may not include the impeller cavity cover 132. The impeller cavity cover 132 is integrated in an external structure requiring cooling, and the arrangement is more beneficial to the integrated design of the electric pump 100, so that the structure of the electric pump 100 is more compact, and the miniaturization and the light weight of the structure of the electric pump 100 are more beneficial. In operation of the electric pump 100, the rotor assembly 11 rotates about the pump shaft 15 or with the pump shaft 15 under the influence of the excitation magnetic field generated by the stator assembly 10 by controlling the current passing through the stator windings 101 of the stator assembly 10 and thus the excitation magnetic field generated by the stator assembly 10.
Referring to fig. 3 again, as an implementation manner, the stator winding 101 further includes an insulating frame 1012, the stator core 1011 includes a plurality of stator teeth 1011b and a main body 1312c, the wire passing slots 1011a are disposed between adjacent stator teeth 1011b, the insulating frame 1012 is wrapped on the bottom surface of the wire passing slots 1011a and the circumferential side wall surface of the stator teeth 1011b, and the winding 1013 is wound on the insulating frame 1012. Electrical isolation between the stator core 1011 and the windings 1013 is achieved by providing insulation frames 1012. Specifically, the insulating frame 1012 and the stator core 1011 may be of a split structure, that is, the insulating frame 1012 is mounted on at least a surface portion of the stator core 1011, and herein, "split arrangement" means that the insulating frame 1012 and the stator core 1011 are respectively processed into two separate parts and then assembled. Of course, the insulating frame 1012 may be a unitary structure. For example, the insulating frame 1012 may be coated on a wall surface corresponding to the wire passing groove 1011a by injection molding, so as to electrically isolate the winding 1013 from the stator core 1011. The winding wire 1013 is wound around the surface of the insulating frame 1012 and forms the stator winding 101. In this way, the assembly process of the stator assembly 10 is advantageously simplified, and the production cost of the electric pump 100 is saved. Of course, the stator winding 101 may not include the insulating frame 1012, and electrical isolation between the winding 1013 and the stator core 1011 may be achieved by other means, for example, coating portions (not shown) may be provided on the wall surfaces of the bottoms of the slot grooves 1011a of the stator core 1011 and the circumferential side wall surfaces of the stator teeth 1011b, the winding 1013 may be wound around the coating portions, and electrical isolation between the stator core 1011 and the winding 1013 may be achieved by providing the coating portions. In this way, the manufacturing process of the electric pump can be simplified, which is beneficial to reducing the manufacturing cost of the electric pump.
As an implementation manner, please refer to fig. 1, 2, 3 and 4, a first assembly is defined, the first assembly includes a stator winding 101 and a connection board assembly 14, the connection board assembly 14 includes a connection board 141 and a conductive member 142, the conductive member 142 includes a first connection portion 1421, a second connection portion 1422 and a third connection portion 1423, and the first connection portion 1421 communicates with the second connection portion 1422 and the third connection portion 1423, respectively. The first connection portion 1421 is in limited connection or fixed connection with the connection plate 141, a conducting portion 1411 is arranged in the connection plate 141, the winding 1013 of the stator winding 101 comprises a phase line leading-out end 1013a, one end of the phase line leading-out end 1013a is communicated with one end of the conducting portion 1411, the second connection portion 1422 of the conductive member 142 is communicated with the other end of the conducting portion 1411, and the third connection portion 1423 of the conductive member 142 is connected with an external power supply. Specifically, one end of the phase lead-out terminal 1013a and one end of the conducting portion 1411 may be electrically connected by welding, or may be electrically connected by plugging, for example, one end of the phase lead-out terminal 1013a and one end of a pin may be plugged, and the other end of the pin may be electrically connected to the conducting portion 1411 on the connecting plate 141. The injection molding body 131 is formed by injection molding at least in a first assembly part, the injection molding body covers the stator winding 101 and at least part of the connecting plate assembly 14, at least part of the third connecting part 1423 is located outside the injection molding body 131, the electric pump 100 is provided with a rotor cavity 20, and the wall surface corresponding to the rotor cavity 20 comprises the inner wall of the injection molding body 131. In this way, after the first fitting is formed, injection molding is performed with the first fitting as an insert, and the injection body 131 can be formed by a set of molds, and first, this is more advantageous in simplifying the structure of the electric pump 100. Second, it is more advantageous to realize automated production line production of the electric pump 100, and to save production cost of the electric pump 100. Third, this approach is also beneficial to reducing the man-hour of manual work, reducing the influence of manually uncontrollable factors on the quality of the electric pump, and improving the quality of the electric pump 100 production.
Further, as an implementation manner, referring to fig. 1, 2 and 5, the injection molding body 131 includes a first injection molding body 1311 and a second injection molding body 1312, where the first injection molding body 1311 is formed by insert molding at least with a first assembly part, the first injection molding body 1311 is coated on an outer sidewall of the stator core 1011 of at least part of the stator winding 101, the winding 1013, and at least part of the connection plate assembly 14, and an integral structure formed by insert molding with the first assembly part is defined as a first assembly part, and the second injection molding body is formed by insert molding with the first assembly part as an insert molding part. In this way, the first injection molding body 1311 and the second injection molding body 1312 are formed by two injection molding, and the arrangement of such a structure is more beneficial to simplifying the mold structure used during injection molding, reducing the manufacturing difficulty of the electric pump 100, and enabling the electric pump 100 to be more beneficial to mass production. In order to increase the strength of the connection between the first injection molding body 1311 and the second injection molding body 1312, as an implementation manner, the first injection molding body 1311 includes a concave portion 1311a, the concave portion 1311a is concave to a surface of an upper end portion of the first injection molding body 1311, the concave portion 1311a may have a plurality of concave portions, the second injection molding body 1312 includes a convex portion 1312a, the convex portion 1312a protrudes from a lower surface of an upper end portion of the second injection molding body 1312, the convex portion 1312a is disposed in cooperation with the concave portion 1311a, and the number of the convex portions 1312a is adapted to the number of the concave portions 1311 a. In this embodiment, the concave portion 1311a of the first injection molding body 1311 is an annular groove structure, and the annular groove structure is recessed on the surface of the upper end portion of the first injection molding body 1311 and is disposed along the circumferential direction of the first injection molding body 1311. The protruding portion 1312a is an annular protruding portion 1312a, the annular protruding portion 1312a is arranged along the upper end and the lower surface of the second injection molding body 1312 in a protruding mode, the annular protruding portion 1312a is matched with the annular inner concave portion 1311a, and in this way, firstly, the processing and the forming of the injection molding die are facilitated, and the processing and the manufacturing of the injection molding die are facilitated; secondly, the strength of the connection between first injection molding 1311 and second injection molding 1312 is advantageously increased.
As an implementation manner, the injection molding body 131 may cover at least part of the connection board assembly 14 or may cover the connection board 141 completely, in this embodiment, the injection molding body 131 covers the connection board 141 completely, as shown in fig. 9, the third connection portion 1423 includes a first embedded portion 1423a and a power connection portion 1423b, the third connection portion 1423 is integrally injection-molded with the first injection molding body 1311, and the power connection portion 1423b is exposed to the outside of the first injection molding body 1311 for connection with an external power supply. In this way, the connecting plate 141 can be effectively protected, the third connecting portion 1423 and the injection molding body 131 are integrally injection-molded and connected together, and the third connecting portion 1423 can rely on the first injection molding body 1311 as a support, so that the reliability of the connection between the second connecting portion 1422 and the connecting plate 141 is effectively enhanced.
As an implementation manner, referring to fig. 1, 2 and 9, the connection board assembly 14 further includes a grounding member 143, where the grounding member 143 includes an abutment portion 1431, a second embedded portion 1432, a third embedded portion 1433 and an extension portion 1434, the abutment portion 1431 is in contact with the stator core 1011, the second embedded portion 1432 is integrally injection-molded and fixedly connected with the connection board 141, the third embedded portion 1433 is integrally injection-molded and fixedly connected with the injection-molded body, and the extension portion 1434 extends to the upper surface of the injection-molded body 131. In this manner, electromagnetic radiation from the stator assembly 10 is advantageously reduced, thereby reducing the effect of electromagnetic radiation on the electric pump. If the electric pump 100 includes electronic components, the influence of electromagnetic radiation on the electronic components can be effectively reduced. The arrangement of this structure can be adapted to the requirements of different types of electric pumps 100.
As an implementation manner, referring to fig. 2, 4 and 7, the electric pump 100 further includes a plug 16, the plug 16 is fixedly connected with the connecting plate assembly 14, the first injection molding body 131 is formed by injection molding at least using the first assembly part as an insert, and one end of the plug 16 is integrally and fixedly connected with the first injection molding body 131. The first assembly part includes the connection plate assembly 14, the stator winding 101 and the plug connector 16, the first injection molding body 131 is formed by injection molding at least using the first assembly part as an insert, and one end of the plug connector is integrally and fixedly connected with the first injection molding body in an injection molding manner. In this way, the third connection portion 1423 of the conductive member 142 is advantageously protected. Defining the mold tooling required for injection molding to form the first injection molding body 1311 as a first injection mold, and when the plug connector 16 is used as an insert for injection molding, the structure of the first injection mold is facilitated to be simplified, and the manufacturing cost of the electric pump is further saved.
Further, as an implementation manner, referring to fig. 2, 3, 5 and 6, the first injection molding body 1311 is formed by insert molding with the pump shaft 15 and the first assembly body, the first injection molding body 1311 includes a first portion 1311b and a second portion 1311c, a cylindrical surface where an inner hole of the stator core 1011 is defined is a first reference surface 1001, a cylindrical surface where a bottom of the stator core 1011 is defined is a second reference surface 1002, the first portion 1311b is located between the first reference surface 1001 and the second reference surface 1002 or an inner side wall surface of the first portion 1311b is flush with the first reference surface 1001 in a radial direction, and the flush is that the inner side wall surface of the first step 1311b is on the same cylindrical surface as the first reference surface 1001. Whether the first portion 1311b is located between the first reference surface 101 and the second reference surface 102 or the inner side wall surface of the first portion 1311b is flush with the first reference surface 101 in the radial direction, the first portion 1311b is entirely covered by the portion of the winding 1013 of the stator winding 101. This effectively isolates the windings 1013 of the stator winding 101 from the working medium flowing in the rotor chamber 20. The second portion 1311c is disposed at one end of the inner hole of the stator core 1011 of the stator winding 101, the pump shaft 15 includes a fixing portion 151 and an installation portion 152, the fixing portion 151 and the second portion 1311c are integrally injection-molded and sealed, and a wall surface corresponding to the rotor cavity 20 includes an inner wall of the first portion 1311b, a side wall corresponding to the inner hole of the stator core 1011, and an upper surface of the second portion 1311 c. At least a portion of the mounting portion 152 of the pump shaft 15 is located within the rotor cavity. In this way, the radial dimension of the electric pump 100 can be reduced, which is more beneficial to the realization of the miniaturization design of the radial direction of the electric pump 100, and of course, in order to increase the service life of the stator core 1011 of the stator assembly 10, a layer of protection part (not shown in the figure) can be coated on the side wall surface corresponding to the rotor cavity 20, and the protection part at least covers the side wall corresponding to the inner hole of the stator core 1011.
Further, as an implementation manner, referring to fig. 2, 5, 6 and 8 again, the second injection molding body 1312 includes a third portion 1312d, the third portion 1312d is disposed on a wall surface of the first portion 1311b and an inner wall surface of the stator core 1011 in the circumferential direction, and a wall surface corresponding to the rotor cavity 20 includes an inner wall surface corresponding to the third portion 1312d and at least a part of an upper surface of the second portion 1311 c. In this way, the clearance between the rotor assembly 11 and the inner side wall corresponding to the rotor cavity 20 is more uniform, and the noise of the electric pump is reduced; while the corresponding sidewall surfaces of the rotor cavity 20 are more neat and aesthetically pleasing. In this embodiment, the second portion 1311c is further provided with a ring groove 1311d, the ring groove 1311d is recessed in the upper surface of the second portion 1311c, and one end of the third portion 1312d is located in the ring groove 1311d, so that the third portion 1312d and the second portion 1311c are integrally injection-molded and connected more firmly.
Referring to fig. 2 and 5, as an implementation manner, the electric pump 100 further includes an impeller wall cover 132, the impeller cavity cover 132 is fixedly connected with the second injection molding body 1312, the impeller cavity cover 132 has an inlet, an outlet and an impeller cavity 30, the impeller cavity 30 is communicated with the rotor cavity 20, the rotating assembly includes a rotor assembly 11 and an impeller assembly 12, the rotor assembly 11 is fixedly connected with the impeller assembly 12, at least part of the impeller assembly 12 is located in the rotor cavity 20, and the rotor assembly 11 is located in the rotor cavity 20. In order to enhance the sealing between the impeller cavity cover 132 and the second injection molded body 1312, as an implementation manner, the second injection molded body 1312 includes a first sealing portion, and the impeller cavity cover 132 includes a second sealing portion, where the first sealing portion and the second sealing portion are sealed and fixed. The fixing means includes welding, bonding, etc., and the welding means includes laser welding, friction welding, and ultrasonic welding, and is not particularly limited herein. Alternatively, the electric pump 100 includes a seal member that abuts against the first seal portion and the second seal portion, respectively, and the impeller chamber cover 132 is fixedly connected to the second injection body 1312 by bolts. This is advantageous in preventing leakage of fluid within the pump cavity. Referring to fig. 5 again, in order to be more firmly fixed to the impeller cavity cover 132 or the external connection structure, as an implementation manner, the second injection molding body 1312 includes a flange portion 1312b and a main body portion 1312c, the main body portion 1312c is wrapped on a circumferential surface of a radial outer side of the stator core 1011 of the stator winding 101, the boss portion 1312a protrudes from a surface of the radial outer side of the main body portion 1312c in a radial direction, and a first sealing portion is provided on an upper surface of the flange portion 1312b, so that a connection ground area between the impeller cavity cover 132 and the second injection molding body 1312 can be increased, and a sealing connection between the impeller cavity cover 132 and the second injection molding body 1312 can be more facilitated.
Referring to fig. 1 to 8, an embodiment of the present application further provides a method for manufacturing an electric pump 100, applied to the electric pump 100, wherein the electric pump 100 includes a stator assembly 10 including a stator winding 101, a rotating assembly including a rotor assembly 11 and an impeller assembly 12, a connecting plate assembly 14, a pump shaft 15, and a pump housing 13, and the pump housing 13 includes a molding body 131, and the method for manufacturing the electric pump 100 includes: at least the stator winding 101 and the connecting plate assembly 14 are used as first assembly parts, and at least the first assembly parts are used as insert injection molding to form an injection molding body 131; the wall surface corresponding to the rotor cavity comprises the inner wall surface of the injection molding body. The rotor assembly 11 may be assembled in the rotor cavity 20, specifically, the rotor assembly may be placed in the rotor cavity, or an injection molding body may be sleeved on the rotor assembly, which is not limited herein. In this way, the structure of the electric pump 100 is simpler, and the automatic production line production of the electric pump 100 is facilitated, and the production cost is saved.
In the present embodiment, the injection body 131 includes a first injection body 1311 and a second injection body 1312, and the manufacturing method of the electric pump 100 includes: at least the stator winding 101 and the connecting plate assembly 14 are used as first assembly parts, at least the first assembly parts are used as insert injection molding to form a first injection molding body 1311, the wall surface corresponding to the rotor cavity comprises the first injection molding body 1311, specifically, as one implementation manner, the stator winding 101 and the connecting plate assembly can be used as the first assembly parts, the first assembly parts are used as the insert injection molding to form the first injection molding body 1311, as another implementation manner, the electric pump 100 further comprises an inserting piece 16, the stator winding 101 and the connecting plate assembly 14 can be used as the first assembly parts, and the first assembly parts are used as the insert injection molding to form the first injection molding body 1311. More specifically, the first injection molded body 1311 may also be formed by insert molding the pump shaft 15 and the first fitting.
The method comprises the steps of defining a first assembly part or an integral structural part formed by injection molding with the first assembly part and a pump shaft as inserts as a first assembly part, forming a second injection molding body by injection molding of the first assembly part, and assembling a rotor assembly in the first injection molding body. Thus being more beneficial to the production and manufacture of the electric pump and saving the production cost of the electric pump.
It should be noted that: the above embodiments are only for illustrating the present application and not for limiting the technical solutions described in the present application, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present application may be modified or substituted by equivalent ones, and all modifications thereof without departing from the spirit and scope of the present application are intended to be included in the scope of the claims of the present application.
Claims (13)
1. The utility model provides an electric pump, includes stator module and connecting plate subassembly, the stator module includes stator winding, stator winding includes stator core and wire winding, its characterized in that: the connecting plate assembly comprises a connecting plate and a conductive piece, wherein the connecting plate is in limit connection or fixed connection with the stator winding, the conductive piece comprises a first connecting part, a second connecting part and a third connecting part, the first connecting part is respectively communicated with the second connecting part and the third connecting part, the first connecting part is in limit connection or fixed connection with the connecting plate, the second connecting part is electrically connected with the winding, the third connecting portion is used for being connected with an external power supply portion, the electric pump further comprises an injection molding body, the injection molding body is formed by injection molding at least with the stator winding and the connecting plate assembly as inserts, the injection molding body is used for coating the stator winding and at least part of the connecting plate assembly, at least part of the third connecting portion is located outside the injection molding body, the electric pump is provided with a rotor cavity, and a wall surface corresponding to the rotor cavity comprises the inner wall of the injection molding body.
2. The electric pump of claim 1, wherein: the injection molding body comprises a first injection molding body and a second injection molding body, the stator winding and the connecting plate assembly are defined to be first assembly parts, the first injection molding body is formed by injection molding at least the first assembly parts as inserts, the first injection molding body is coated on the outer side wall of the stator core of the stator winding at least partially, the winding and the connecting plate assembly at least partially, the first assembly parts are defined to be integral structural parts formed by injection molding as inserts, and the second injection molding body is formed by injection molding the first assembly parts as inserts.
3. The electric pump of claim 2, wherein: the third connecting portion comprises a first embedded portion and a power connecting portion, the third connecting portion is integrally connected with the first injection molding body in an injection molding mode, and the power connecting portion is exposed to the outside of the first injection molding body and used for being connected with an external power supply.
4. An electric pump according to claim 3, characterized in that: the connecting plate assembly further comprises a grounding piece, the grounding piece comprises an abutting portion, a second embedded portion, a third embedded portion and an extending portion, the abutting portion is in contact with the stator core, the second embedded portion is in integral injection molding fixed connection with the connecting plate, the third embedded portion is in integral injection molding fixed connection with the first injection molding body, and the extending portion is exposed to the outside of the first injection molding body.
5. The electric pump of claim 2, wherein: the electric pump further comprises a plug connector, the plug connector is fixedly connected with the connecting plate, the plug connector is provided with a containing cavity, at least part of the third connecting portion is located in the containing cavity, the stator winding, the connecting plate assembly and the plug connector are defined to be first assembly parts, the first injection molding body is formed by injection molding at least the first assembly parts as insert parts, and one end of the plug connector is integrally and fixedly connected with the first injection molding body in an injection molding mode.
6. An electric pump according to any one of claims 2-5, characterized in that: the electric pump further comprises a pump shaft, the first injection molding body is formed by injection molding of the pump shaft and the first assembly part, the first injection molding body comprises a first part and a second part, a cylindrical surface where an inner hole of the stator core is located is defined as a first reference surface, a cylindrical surface where a groove bottom of the stator core is defined as a second reference surface, the first part is located between the first reference surface and the second reference surface or is flush with the first reference surface in the radial direction, the first part is completely covered on a winding part of the stator winding, the second part is arranged at one end of the inner hole of the stator winding, and a wall surface corresponding to the rotor cavity comprises an inner side wall of the first part, a side wall corresponding to the inner hole of the stator core and an upper surface of the second part.
7. The electric pump of claim 6, wherein: the second injection molding body comprises a third part, the third part is arranged on the wall surface of the first part and the inner wall surface of the stator core in the circumferential direction, one end of the third part is integrally and fixedly connected with the second part in an injection molding mode, and the wall surface corresponding to the rotor cavity comprises the inner wall surface corresponding to the third part and at least part of the upper surface of the second part.
8. An electric pump according to any one of claims 2-7, characterized in that: the second injection molding body comprises a main body part and a flange part, wherein the main body part is coated on the circumferential surface of the radial outer side of the stator core of the stator winding, and the flange part protrudes out of the surface of the radial outer side of the main body part.
9. An electric pump according to any one of claims 1-8, characterized in that: the electric pump further comprises an impeller cavity cover and a rotating assembly, the rotating assembly comprises an impeller assembly and a rotor assembly, the impeller assembly is fixedly connected with the rotor assembly, the impeller cavity cover is fixedly connected with the injection molding body, the impeller cavity cover is provided with an inlet, an outlet and an impeller cavity, the impeller cavity is communicated with the rotor cavity, the rotor assembly is located in the rotor cavity, and the impeller assembly is located in the impeller cavity.
10. A method of manufacturing an electric pump, comprising the steps of:
at least the stator winding and the connecting plate assembly are used as a first assembly part, at least the first assembly part is used as an insert injection molding to form an injection molding body, and the wall surface corresponding to the rotor cavity comprises the inner wall of the injection molding body.
11. The method of manufacturing an electric pump according to claim 10, further comprising the steps of:
forming the first injection molding part by insert molding at least the first fitting part;
and defining the integral structural member formed by insert molding with the first assembly as a first component, and forming a second injection molding body by insert molding with the first component as the first component.
12. The method of manufacturing an electric pump according to claim 11, characterized in that:
and the first injection molding body is formed by taking the plug connector, the connecting plate assembly and the stator winding as first assembly parts and taking at least the first assembly parts as insert injection molding.
13. The method of manufacturing an electric pump according to claim 11 or 12, characterized by further comprising the steps of:
and forming the first injection molding body by taking the pump shaft and the first assembly part as insert injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210330816.5A CN116928055A (en) | 2022-03-30 | 2022-03-30 | Electric pump and method for manufacturing electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210330816.5A CN116928055A (en) | 2022-03-30 | 2022-03-30 | Electric pump and method for manufacturing electric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116928055A true CN116928055A (en) | 2023-10-24 |
Family
ID=88384905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210330816.5A Pending CN116928055A (en) | 2022-03-30 | 2022-03-30 | Electric pump and method for manufacturing electric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116928055A (en) |
-
2022
- 2022-03-30 CN CN202210330816.5A patent/CN116928055A/en active Pending
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