Pump housing stator assembly and method of manufacturing same

Abstract

The application discloses a pump shell stator assembly and a manufacturing method thereof, and relates to the technical field of electronic water pumps and parts thereof.The pump shell stator assembly comprises a stator assembly and a pump shell body, the stator assembly comprises a stator core, a coil, an electric connection terminal and a grounding terminal; the pump shell body is formed in a covering mode outside the stator core and the electric connection terminal, so that at least a part of the stator core and the electric connection terminal is embedded in the pump shell body, and at least another part of the stator core and the electric connection terminal is exposed to the pump shell body; the grounding terminal on the stator core penetrates out of the pump shell body; the coil is wound around the tooth part of the stator core after the pump shell body is formed, and the coil is electrically connected with the electric connection terminal.The application mainly solves the problem of how to provide the electronic water pump with a pump shell and a stator assembly which are easy to manufacture and assemble, have a high integration degree and good mechanical performance; and the application has the characteristics of being easy to manufacture and assemble, having a high integration degree and good mechanical performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic water pumps and parts thereof, in particular to a pump shell stator assembly and a manufacturing method thereof. BACKGROUND

[0002] Electronic water pumps have high output efficiency and can achieve precise flow control, so they are widely used in automobiles, household appliances and industrial equipment. New energy vehicles usually have two or more electronic water pumps, and the electronic water pump is the power source of the entire cooling system of the new energy vehicle. The power battery and drive motor of the new energy vehicle need to rely on the electronic water pump to drive the coolant to circulate and cool.

[0003] The pump shell and the stator assembly are core components of the electronic water pump, and they bear many functions. For example, the pump shell is the structural basis of the electronic water pump, used to accommodate various components of the electronic water pump, and provides a rotor chamber for the electronic water pump. The stator assembly is used to receive power and provide a rotating magnetic field to drive the rotor assembly to rotate.

[0004] The pump shell and the stator assembly are complex in process and have certain precision requirements when they are assembled with each other, in order to ensure the performance, reliability and service life of the electronic water pump. This puts high requirements on the manufacturing process of the pump shell itself. The mechanical structure of the pump shell is often complex, and the wall thickness is uneven, which makes it difficult to form, and even leads to problems such as reduced strength, cracking and high defect rate of the pump shell.

[0005] In summary, how to provide the pump shell and the stator assembly with easy manufacturing and assembly, high integration level and good mechanical properties for the electronic water pump has become one of the problems to be solved. SUMMARY

[0006] The present application relates to the technical field of electronic water pumps and parts thereof, in particular to a pump shell stator assembly and a manufacturing method thereof.

[0007] To achieve the above object, the present application provides the following technical scheme: a pump shell stator assembly, comprising a stator assembly and a pump shell body; the stator assembly comprises a stator core, a coil, an electrical connection terminal and a grounding terminal; the stator core comprises a yoke part in the shape of a ring, a plurality of tooth parts formed at the inner ring of the yoke part, and a shoe part formed at the free end of the tooth part; the grounding terminal is inserted / formed on the stator core; the pump shell body is formed in an overmolding manner outside the stator core and the electrical connection terminal, so that at least part of the stator core and the electrical connection terminal is embedded in the pump shell body, and at least part of the stator core and the electrical connection terminal is exposed to the pump shell body, and the grounding terminal on the stator core penetrates out of the pump shell body; the coil is wound around the tooth part of the stator core after the pump shell body is formed, and the coil is electrically connected with the electrical connection terminal.

[0008] In the above technical scheme, an inner wall of the pump shell body forms a stator accommodating part; at least part of the stator core is embedded in the stator accommodating part of the pump shell body, and at least part of the stator core is exposed to the stator accommodating part of the pump shell body; the grounding terminal on the stator core penetrates out of the stator accommodating part of the pump shell body.

[0009] In the above technical scheme, the stator accommodating part of the pump shell body comprises a yoke part accommodating ring with a ring-shaped inner cavity, a plurality of tooth part accommodating segments formed at the inner ring of the yoke part accommodating ring, and a shoe part blocking wall formed at the free end of the tooth part accommodating segment; the yoke part of the stator core is accommodated in the yoke part accommodating ring of the stator accommodating part, the tooth part of the stator core is accommodated in the tooth part accommodating segment of the stator accommodating part, the shoe part of the stator core is close to the shoe part blocking wall of the stator accommodating part, and the inner end surface of the shoe part of the stator core is exposed; the coil is wound around the tooth part of the stator core after the tooth part accommodating segment is formed.

[0010] In the above technical scheme, the inner wall / stator accommodating part of the pump shell body is pulled up to form a terminal retaining seat for wrapping the electrical connection terminal and the grounding terminal; at least part of the electrical connection terminal and the grounding terminal is embedded in the terminal retaining seat, and at least part of the electrical connection terminal and the grounding terminal penetrates out of the terminal retaining seat.

[0011] In the above technical scheme, the shoe part blocking wall of the stator accommodating part extends in the axial direction of the pump shell body to form a coil blocking wall.

[0012] In the technical scheme, one end of the pump shell body is formed with a pump cover connecting part suitable for connecting a pump cover of the electronic water pump, and the other end of the pump shell body is formed with an end cover connecting part suitable for connecting an end cover of the electronic water pump; and the end face of the stator accommodating part is located at the pump cover connecting part of the pump shell body.

[0013] In the technical scheme, an outer edge of the pump cover connecting part of the pump shell body is formed with a pump cover sealing groove suitable for cooperating with the pump cover of the electronic water pump, and the pump cover sealing groove is axially offset from the coil of the stator assembly.

[0014] In the technical scheme, the surface of the pump shell body is formed with an insert mounting seat.

[0015] A manufacturing method of a pump shell stator assembly for the pump shell stator assembly, comprising:

[0016] forming a stator core, and inserting / molding a grounding terminal on the stator core;

[0017] The stator core comprises a yoke part in a ring shape, a plurality of tooth parts formed at an inner ring of the yoke part, and a shoe part formed at a free end of the tooth part.

[0018] The pump shell body is formed on the stator core and the electrical connection terminal in an overmolding manner, at least a part of the stator core and the electrical connection terminal is embedded in the pump shell body, and at least another part of the stator core and the electrical connection terminal is exposed to the pump shell body, and the grounding terminal on the stator core penetrates out of the pump shell body.

[0019] After the pump shell body is formed, a coil is wound on the tooth part of the stator core, and the coil is electrically connected with the electrical connection terminal.

[0020] In the technical scheme, an inner wall of the pump shell body is formed with a stator accommodating part; the stator accommodating part of the pump shell body comprises a yoke part accommodating ring with an inner cavity in a ring shape, a plurality of tooth part accommodating segments formed at an inner ring of the yoke part accommodating ring, and a shoe part blocking wall formed at a free end of the tooth part accommodating segment; the yoke part of the stator core is accommodated in the yoke part accommodating ring of the stator accommodating part, the tooth part of the stator core is accommodated in the tooth part accommodating segment of the stator accommodating part, the shoe part of the stator core is tightly attached to the shoe part blocking wall of the stator accommodating part, and an inner end face of the shoe part of the stator core is exposed; and the coil is wound on the tooth part of the stator core after the tooth part accommodating segment.

[0021] Compared with the prior art, the pump shell stator assembly and the manufacturing method thereof have the following beneficial effects: the pump shell body is formed outside the stator core in an overmolding manner, which provides an integrated and integrated structure for the stator assembly and the pump shell body, thereby improving the integration and integration degree of the electronic water pump, reducing the assembly difficulty of each part, avoiding the influence of assembly defects or assembly errors, and especially positioning the stator core through the pump shell body, which makes the coil more easily wound on the tooth portion of the stator core; the mechanical strength of the outer wall of the pump shell body is improved through the electrical connection terminal, the grounding terminal and the terminal retaining seat, so that the pump shell body is not easy to break; at least another part of the stator assembly is exposed to the pump shell body, which can utilize the water flow in the rotor chamber and the impeller chamber of the electronic water pump to dissipate heat for the stator assembly; in summary, the pump shell component integrated with the stator assembly has the characteristics of easy manufacturing and assembly, high integration degree and good mechanical performance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is one of the perspective views of the present application.

[0023] Figure 2 is the second perspective view of the present application.

[0024] Figure 3 is the axial cross-sectional view of the present application.

[0025] Figure 4 is the radial cross-sectional view of the present application.

[0026] The reference signs are: 1, stator assembly; 11, stator core; 111, yoke portion; 112, tooth portion; 113, boot portion; 1131, inner end face; 12, coil; 13, electrical connection terminal; 14, grounding terminal; 2, pump shell body; 21, stator accommodating portion; 211, yoke portion accommodating ring; 212, tooth portion accommodating section; 213, boot portion blocking wall; 214, coil blocking wall; 22, pump cover connecting portion; 221, pump cover screw seat; 222, pump cover sealing groove; 23, end cover connecting portion; 231, end cover screw seat; 24, terminal retaining seat; 25, plug-in mounting seat. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] The embodiment provides a pump shell stator assembly used for constituting a shell and a stator assembly of an electronic water pump, so as to provide a structural basis and a functional basis for the electronic water pump.

[0029] Referring to Figures 1-4 The pump shell stator assembly comprises a stator assembly 1 and a pump shell body 2, wherein the stator assembly 1 is used for generating a rotating magnetic field to drive a rotor assembly of the electronic water pump to rotate, and the pump shell body 2 is used for constituting a shell of the electronic water pump and providing a structural basis for the electronic water pump.

[0030] The stator assembly 1 comprises a stator core 11, a coil 12, an electric connection terminal 13 and a grounding terminal 14, wherein the stator core 11 is a ring-shaped body made of cast iron, the coil 12 is an electromagnetic coil 12 formed by winding a number of turns of enameled wire, the electric connection terminal 13 and the grounding terminal 14 are both made of copper or aluminum, the stator core 11 comprises a yoke portion 111 in the form of a ring, a plurality of tooth portions 112 formed in the inner ring of the yoke portion 111, and a shoe portion 113 formed at the free end of the tooth portion 112, actually, the yoke portion 111, the tooth portion 112 and the shoe portion 113 are integrally formed, and the grounding terminal 14 is inserted into or formed on the stator core 11, in the embodiment, the tooth portion 112 is distributed in the circumferential direction and has six tooth portions, and correspondingly, the coil 12 is provided with six groups of coils, in the embodiment, the electric connection terminal 13 is provided with three electric connection terminals corresponding to U phase, V phase and W phase respectively, and the grounding terminal 14 is provided with one grounding terminal which is inserted into the yoke portion 111 of the stator core 11.

[0031] The pump shell body 2 is formed in an overmolding manner outside the stator core 11 and the electric connection terminal 13, so that at least a part of the stator core 11 and the electric connection terminal 13 is embedded in the pump shell body 2, and at least another part of the stator core 11 and the electric connection terminal 13 is exposed outside the pump shell body 2, and the grounding terminal 14 on the stator core 11 penetrates out of the pump shell body 2, after the pump shell body 2 is formed, the coil 12 is wound on the tooth portion 112 of the stator core 11, and the coil 12 is electrically connected with the electric connection terminal 13, that is, after the pump shell body 2 is formed, the coil 12 is wound on the tooth portion 112 of the stator core 11.

[0032] Specifically, an inner wall of the pump shell body 2 is formed with a stator accommodating portion 21 which is integrally injection molded with the pump shell body 2, at least a part of the stator core 11 is embedded in the stator accommodating portion 21 of the pump shell body 2, and at least another part of the stator core 11 is exposed outside the stator accommodating portion 21 of the pump shell body 2, specifically, exposed outside an inner ring surface of the stator accommodating portion 21, the grounding terminal 14 on the stator core 11 penetrates out of the stator accommodating portion 21 of the pump shell body 2, specifically, penetrates out of an end surface of the stator accommodating portion 21.

[0033] Further specifically, the stator accommodating portion 21 of the pump shell body 2 comprises a yoke accommodating ring 211 with an annular inner cavity, a plurality of tooth accommodating segments 212 formed at the inner ring of the yoke accommodating ring 211, and a shoe blocking wall 213 formed at the free end of the tooth accommodating segments 212. In fact, the yoke accommodating ring 211, the tooth accommodating segments 212 and the shoe blocking wall 213 are integrally formed on the inner wall of the pump shell body 2 and are in a thin-walled shape. The yoke accommodating ring 211 is an annular thin wall that can wrap the yoke 111 of the stator core 11. The tooth accommodating segments 212 are strip-shaped thin walls that can wrap the teeth 112 of the stator core 11. The shoe blocking wall 213 is a sheet-shaped thin wall that can be placed against the shoe 113 of the stator core 11. The yoke 111 of the stator core 11 is accommodated in the yoke accommodating ring 211 of the stator accommodating portion 21. The teeth 112 of the stator core 11 are accommodated in the tooth accommodating segments 212 of the stator accommodating portion 21. The shoe 113 of the stator core 11 is tightly attached to the shoe blocking wall 213 of the stator accommodating portion 21, and the inner end surface 1131 of the shoe 113 of the stator core 11 is exposed. After the tooth accommodating segments 212 are formed, the coil 12 is wound around the teeth 112 of the stator core 11, i.e., the coil 12 is wound around the outer surfaces of the teeth 112 of the stator core 11 and the tooth accommodating segments 212.

[0034] Further, the inner wall of the pump shell body 2 / stator accommodating portion 21 is pulled up to form a terminal retaining seat 24 for wrapping the electrical connection terminal 13 and the grounding terminal 14. At least a part of the electrical connection terminal 13 and the grounding terminal 14 is embedded in the terminal retaining seat 24, and at least another part of the electrical connection terminal 13 and the grounding terminal 14 protrudes from the terminal retaining seat 24. In this way, the electrical connection terminal 13 and the grounding terminal 14 can be effectively protected to avoid deformation and have certain insulation effect. In the present embodiment, the side surface of the terminal retaining seat 24 is connected to the inner wall of the pump shell body 2.

[0035] Further, the shoe blocking wall 213 of the stator accommodating portion 21 extends in the axial direction of the pump shell body 2 to form a coil blocking wall 214. Specifically, the coil blocking wall 214 is located at the upper and lower ends of the shoe blocking wall 213 and is integrally formed with the shoe blocking wall 213 to prevent the coil 12 from falling off after winding.

[0036] Further, one end of the pump shell body 2 is formed with a pump cover connecting portion 22 adapted to connect with the pump cover of the electronic water pump, in fact, the pump cover connecting portion 22 is matched with the shape of the pump cover of the electronic water pump, and is adapted to realize the butt joint of the pump shell body 2 and the pump cover; the other end of the pump shell body 2 is formed with an end cover connecting portion 23 adapted to connect with the end cover of the electronic water pump, in fact, the end cover connecting portion 23 is matched with the shape of the end cover of the electronic water pump, and is adapted to realize the butt joint of the pump shell body 2 and the end cover; the end surface of the stator accommodating portion 21 is located at the pump cover connecting portion 22 of the pump shell body 2, so that the entire stator assembly 1 is as close to the pump cover as possible, and when the electronic water pump is running, the stator assembly 1 located in the stator accommodating portion 21 can be cooled to a certain extent by relying on the flowing liquid in the pump cover.

[0037] Further, a plurality of pump cover screw seats 221 are arranged on the pump cover connecting portion 22, in some possible embodiments, the pump cover screw seat 221 is a nut embedded in the pump cover connecting portion 22, and in other possible embodiments, the pump cover screw seat 221 is a self-tapping hole on the surface of the pump cover connecting portion 22; a plurality of end cover screw seats 231 are arranged on the end cover connecting portion 23, in some possible embodiments, the end cover screw seat 231 is a nut embedded in the end cover connecting portion 23, and in other possible embodiments, the end cover screw seat 231 is a self-tapping hole on the surface of the end cover connecting portion 23, so as to facilitate the mutual fixation of the pump shell body 2 and the pump cover and the end cover of the electronic water pump, respectively.

[0038] Further, an outer edge of the pump cover connecting portion 22 of the pump shell body 2 is formed with a pump cover sealing groove 222 adapted to cooperate with the pump cover of the electronic water pump, that is, after the electronic water pump is assembled, the edge of the pump cover is located in the pump cover sealing groove 222, so that a sealed structure is formed between the pump cover and the pump cover connecting portion 22 of the pump shell body 2; the pump cover sealing groove 222 is axially offset from the coil 12 of the stator assembly 1, in this way, the pump cover sealing groove 222 is axially offset from the weak position of the stator accommodating portion 21, so as to avoid the rupture of the position after the electronic water pump is assembled / used.

[0039] Further, the surface of the pump shell body 2 is formed with a plug mounting seat 25, and the periphery of the plug mounting seat 25 is provided with screw holes, so as to facilitate the installation of different types, specifications and shapes of connector end seats on the surface of the pump shell body 2; the plug mounting seat 25 is arranged on the surface of the pump shell body 2, so as to facilitate the setting of different types, specifications and shapes of connector end seats as plugs of the electronic water pump, and compared with the direct forming of the connector end seats on the surface of the pump shell body 2, the production and use flexibility of this way is better.

[0040] The application also provides a manufacturing method of the pump shell stator assembly, which is used for manufacturing the above pump shell stator assembly, and the method comprises the following steps:

[0041] S1, the stator core 11 is formed, and the grounding terminal 14 is inserted and formed on the stator core 11.

[0042] Specifically, the stator core 11 can be formed by using an existing technology such as one-piece die casting or machining forming, and when the grounding terminal 14 is fixed, the fixing foot of the grounding terminal 14 can be fixed on the stator core 11 by a pressure clamp or an automatic assembly device.

[0043] The stator core 11 includes a yoke portion 111 in the form of a ring, a plurality of tooth portions 112 formed in the inner ring of the yoke portion 111, and a shoe portion 113 formed at the free end of the tooth portion 112. In fact, the yoke portion 111, the tooth portion 112 and the shoe portion 113 are integrally formed, and the electrical connection terminal 13 and the grounding terminal 14 are inserted and formed on the stator core 11. In this embodiment, the tooth portion 112 is distributed in the circumferential direction, and correspondingly, the coil 12 is provided with 6 groups.

[0044] S2, the pump shell body 2 is formed in an over-molding manner on the stator core 11 and the electrical connection terminal 13, so that at least a part of the stator core 11 and the electrical connection terminal 13 is embedded in the pump shell body 2, and at least another part of the stator core 11 and the electrical connection terminal 13 is exposed to the pump shell body 2, and the grounding terminal 14 on the stator core 11 penetrates out of the pump shell body 2; after the pump shell body 2 is formed, the coil 12 is wound on the tooth portion 112 of the stator core 11, and the coil 12 is electrically connected with the electrical connection terminal 13.

[0045] In fact, the stator core 11 and the grounding terminal 14 are assembled first, and the nuts constituting the pump cover screw seat 221 and the end cover screw seat 231, and the stator core 11 and the electrical connection terminal 13 are optionally placed into a forming mold of the pump shell body 2, and then the thermoplastic plastic is injected into the forming mold, and after the thermoplastic plastic is solidified, the pump shell body 2 and the stator accommodating portion 21, the pump cover connecting portion 22, the end cover connecting portion 23, the terminal retaining seat 24 and the plug-in mounting seat 25 thereon are formed, at this time, the stator assembly 1, the pump cover screw seat 221 and the end cover screw seat 231 are integrally formed with the pump shell body 2; finally, the pump cover screw seat 221 and the end cover screw seat 231 are formed by machining self-tapping screw holes in the pump cover connecting portion 22 and the end cover connecting portion 23, respectively.

[0046] In fact, the two ends of the coil 12 are polarity welded on the welding positions of the electrical connection terminal 13, so as to realize the electrical connection between the coil 12 and the electrical connection terminal 13.

[0047] Specifically, the inner wall of the pump shell body 2 is formed with a stator accommodating portion 21 which is integrally injection molded with the pump shell body 2; the stator accommodating portion 21 of the pump shell body 2 comprises a yoke accommodating ring 211 with an annular inner cavity, a plurality of tooth accommodating segments 212 formed at the inner ring of the yoke accommodating ring 211, and a shoe blocking wall 213 formed at the free end of the tooth accommodating segments 212; in fact, the yoke accommodating ring 211, the tooth accommodating segments 212 and the shoe blocking wall 213 are integrally formed on the inner wall of the pump shell body 2 and are all thin-walled, wherein the yoke accommodating ring 211 is an annular thin wall which can wrap the yoke 111 of the stator core 11, the tooth accommodating segments 212 are strip-shaped thin walls which can wrap the teeth 112 of the stator core 11, and the shoe blocking wall 213 is a sheet-shaped thin wall which can be placed against the shoe 113 of the stator core 11; the yoke 111 of the stator core 11 is accommodated in the yoke accommodating ring 211 of the stator accommodating portion 21, the teeth 112 of the stator core 11 are accommodated in the tooth accommodating segments 212 of the stator accommodating portion 21, the shoe 113 of the stator core 11 is tightly placed against the shoe blocking wall 213 of the stator accommodating portion 21, and the inner end surface 1131 of the shoe 113 of the stator core 11 is exposed; after the tooth accommodating segments 212 are formed, the coil 12 is wound on the teeth 112 of the stator core 11, i.e., the coil 12 is wound on the outer surfaces of the teeth 112 of the stator core 11 and the tooth accommodating segments 212.

[0048] The pump shell stator assembly and the manufacturing method thereof of the present embodiment provide an integrated structure for the stator assembly 1 and the pump shell body 2 by overmolding the pump shell body 2 on the stator core 11, thereby improving the integration level of the electronic water pump, reducing the assembly difficulty of each part, avoiding the influence of assembly defects or assembly errors, and especially positioning the stator core 11 by the pump shell body 2 to make the coil 12 more easily wound on the teeth 112 of the stator core 11; the mechanical strength of the outer wall of the pump shell body 2 is improved by the electrical connection terminal 13, the grounding terminal 14 and the terminal retaining seat 24, so that the pump shell body 2 is not easily broken; at least another part of the stator assembly 1 is exposed to the pump shell body 2, so that the stator assembly 1 can be cooled by the water flow in the rotor chamber and the impeller chamber of the electronic water pump; in summary, the pump shell member integrated with the stator assembly 1 of the present embodiment has the characteristics of easy manufacturing and assembly, high integration level and good mechanical performance.

[0049] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pump housing stator assembly, comprising a stator assembly and a pump housing body; characterized in that, The stator assembly includes a stator core, coils, electrical connection terminals, and a grounding terminal; The stator core includes an annular yoke, a plurality of teeth formed in the inner ring of the yoke, and a boot formed at the free end of the teeth. The grounding terminal is inserted into / formed on the stator core; The pump housing body is formed outside the stator core and the electrical connection terminal by overmolding, such that at least a portion of the stator core and the electrical connection terminal are embedded in the pump housing body, and at least another portion of the stator core and the electrical connection terminal are exposed outside the pump housing body, and the grounding terminal on the stator core passes through the pump housing body. After the pump housing body is formed, the coil is wound around the teeth of the stator core, and the coil is electrically connected to the electrical connection terminal. The inner wall of the pump casing body has a stator accommodating portion; At least a portion of the stator core is embedded in the stator receiving portion of the pump casing body, and at least another portion of the stator core is exposed outside the stator receiving portion of the pump casing body. The grounding terminal on the stator core extends out from the stator housing portion of the pump casing body; The stator receiving portion of the pump housing body includes a yoke receiving ring with an annular inner cavity, a plurality of toothed receiving segments formed in the inner ring of the yoke receiving ring, and a boot-shaped baffle formed at the free end of the toothed receiving segments. The yoke of the stator core is housed in the yoke housing ring of the stator housing portion, the teeth of the stator core are housed in the teeth housing section of the stator housing portion, the shoe of the stator core is in close contact with the shoe baffle of the stator housing portion, and the inner end face of the shoe of the stator core is exposed. The coil is formed in the toothed accommodating section and then wound around the teeth of the stator core.

2. The pump housing stator assembly according to claim 1, characterized in that: The inner wall / stator accommodating portion of the pump housing body is pulled up to form a terminal retainer for enclosing the electrical connection terminal and the grounding terminal; At least a portion of the electrical connection terminal and the grounding terminal are embedded in the terminal retainer, and at least another portion of the electrical connection terminal and the grounding terminal protrude from the terminal retainer.

3. The pump housing stator assembly according to claim 1, characterized in that: The shoe-shaped baffle of the stator housing extends axially toward the pump housing body to form a coil baffle.

4. The pump housing stator assembly according to claim 1, characterized in that: One end of the pump housing body forms a pump cover connection portion suitable for connecting the pump cover of the electronic water pump, and the other end of the pump housing body forms an end cover connection portion suitable for connecting the end cover of the electronic water pump. The end face of the stator housing portion is located at the pump cover connection portion of the pump casing body.

5. The pump housing stator assembly according to claim 2, characterized in that: A pump cover sealing groove is formed at the outer edge of the pump cover connecting part of the pump housing body, which is suitable for cooperating with the pump cover of the electric water pump. The pump cover sealing groove and the coil of the stator assembly are axially misaligned with each other.

6. The pump housing stator assembly according to claim 1, characterized in that: A plug-in mounting base is formed on the surface of the pump casing body.

7. A method for manufacturing a pump housing stator assembly, used to manufacture the pump housing stator assembly according to any one of claims 1-6, characterized in that, include: The stator core is formed, and the grounding terminals are all inserted into / formed on the stator core; The stator core includes an annular yoke, a plurality of teeth formed in the inner ring of the yoke, and a boot formed at the free end of the teeth. The pump housing body is formed outside the stator core and electrical connection terminals by overmolding, such that at least a portion of the stator core and electrical connection terminals are embedded in the pump housing body, and at least another portion of the stator core and electrical connection terminals are exposed outside the pump housing body, with the grounding terminal on the stator core passing through the pump housing body. After the pump housing body is formed, the coil is wound around the teeth of the stator core and the coil is electrically connected to the electrical connection terminal.

8. The method for manufacturing the pump housing stator assembly according to claim 7, characterized in that: The inner wall of the pump casing body has a stator accommodating portion; The stator receiving portion of the pump housing body includes a yoke receiving ring with an annular inner cavity, a plurality of toothed receiving segments formed in the inner ring of the yoke receiving ring, and a boot-shaped baffle formed at the free end of the toothed receiving segments. The yoke of the stator core is housed in the yoke housing ring of the stator housing portion, the teeth of the stator core are housed in the teeth housing section of the stator housing portion, the shoe of the stator core is in close contact with the shoe baffle of the stator housing portion, and the inner end face of the shoe of the stator core is exposed. The coil is wound around the teeth of the stator core after the tooth receiving section.

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