Motor stator structure for electronic water pump

Abstract

The utility model provides a motor stator structure used for an electronic water pump, comprising a stator iron core, a skeleton, a plurality of iron core units and a closed stator iron core tool, the cross section of the skeleton is in the shape of a circle with a hollow inner side, the skeleton is connected to the inner side wall of the stator iron core, the plurality of iron core units are arranged at intervals along the circumferential direction of the skeleton at the inner side of the skeleton, and the closed stator iron core tool is arranged on the skeleton. Each iron core unit comprises a winding part and an iron core part, one end of the winding part is connected to the inner side wall of the framework, and the iron core part is connected to the other end of the winding part; and the closed stator iron core tool is detachably connected between two adjacent iron core parts, so that the plurality of iron core parts are encircled and connected to form an iron core structure with a circumferential cross section. According to the closed stator iron core tool, gaps between the iron core parts are filled, magnetic leakage is reduced, and magnetic induction intensity is improved, so that motor cogging torque is reduced, noise generated by a motor is reduced, the winding part can optimize a winding and arranging mode, the process manufacturing precision is improved, and the working efficiency of the motor is prevented from being interfered.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic water pump technical field especially a motor stator structure for electronic water pump. BACKGROUND

[0002] With the development of society and the gradual promotion of new energy vehicles, people have higher requirements for the performance of electronic water pumps, and how to reduce the motor vibration frequency and improve the stator structure to further optimize the manufacturing method of electronic water pumps is a problem that current motor engineers urgently need to solve.

[0003] The stator core of the existing stator for electronic water pump is composed of silicon steel sheets with tooth slot structure, and the acting force between the stator and the rotor is generated by electromagnetic force when the motor works. However, the water pump will generate tooth slot torque due to the influence of the stator tooth slot structure, which will increase the vibration frequency of the electronic water pump and produce noise. The electronic water pump will reduce the service life when working in complex and harsh conditions for a long time.

[0004] Therefore, it is necessary to provide a motor stator structure for electronic water pump to solve or at least alleviate the above problems. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a motor stator structure for electronic water pump to solve the problem of high vibration frequency of electronic water pump in the prior art, which leads to high noise.

[0006] To achieve the above purpose, the utility model provides a motor stator structure for electronic water pump, which comprises a stator core, a framework, a plurality of core units and a closed stator core tool; wherein,

[0007] The cross section of the framework is hollow on the inside and has a circular shape, the framework is connected to the inner wall of the stator core, and a plurality of core units are arranged on the inside of the framework along the circumference of the framework; wherein,

[0008] Each core unit comprises a winding part and a core part, one end of the winding part is connected to the inner wall of the framework, and the core part is connected to the other end of the winding part; the closed stator core tool is detachably connected between the two adjacent core parts to form a core structure with a circular cross section by connecting the plurality of core parts.

[0009] Preferably, each closed stator core tool comprises a core block and two clamps oppositely arranged along the extension direction of the core block, the core block is vertically arranged, and the two clamps are respectively connected to the two vertical ends of the core block, each clamp is outwardly protruding along the circumference of the framework to form two connecting ends, and the two connecting ends are respectively connected to the two adjacent core parts.

[0010] Preferably, each of the iron core parts is provided with two vertically opposite clamping groove units, each of the clamping groove units comprises clamping grooves arranged opposite to each other in the circumference of the framework, and the two connecting ends of each of the clamps are respectively clamped and connected in the clamping grooves of the adjacent two iron core parts.

[0011] Preferably, one end of each of the clamps towards the iron core block is recessed to form a recess, and the two ends of the iron core block in the vertical direction are respectively connected in the recesses of the two clamps.

[0012] Preferably, the top end and the bottom end of the winding part are respectively provided with a plurality of winding grooves arranged in the radial direction of the framework, and each of the winding grooves is in the shape of an open arc.

[0013] Preferably, the waterproof sleeve is connected to the inner side walls of the iron core part and the iron core block.

[0014] Preferably, the length of the iron core block is 15-20 cm.

[0015] Preferably, the winding grooves at the top end and the bottom end of each of the winding parts are arranged correspondingly.

[0016] Preferably, the number of winding grooves at the top end of each of the winding parts is six, and the six winding grooves are arranged in the radial direction of the framework.

[0017] Preferably, the iron core block is made of silicon steel sheet material.

[0018] Compared with the prior art, the motor stator structure for the electronic water pump has the following beneficial effects:

[0019] The motor stator structure for the electronic water pump comprises a stator core, a framework, a plurality of iron core units and a closed stator core tool, the cross section of the framework is in the shape of a hollow circle on the inner side, the framework is connected to the inner side wall of the stator core, the plurality of iron core units are arranged on the inner side of the framework in the circumferential direction, each of the iron core units comprises a winding part and an iron core part, one end of the winding part is connected to the inner side wall of the framework, and the iron core part is connected to the other end of the winding part; the closed stator core tool is detachably connected between the adjacent two iron core parts to connect the plurality of iron core parts to form an iron core structure in the shape of a circle in cross section. Thus, the gap between the iron core parts is filled by the closed stator core tool, the magnetic leakage is reduced, the magnetic induction intensity is improved, the motor tooth slot torque is reduced, the noise generated by the motor is reduced, the winding arrangement mode of the winding part can be optimized, the process manufacturing precision is improved, and the working efficiency of the motor is avoided from being interfered. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only illustrate some of the embodiments of the present application, and 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 the present application.

[0021] Figure 1 It is a three-dimensional schematic view of the present application after removing the waterproof sleeve in one embodiment.

[0022] Figure 2 It is a three-dimensional schematic view of the application scene of the overall structure in one embodiment of the present application.

[0023] Figure 3 It is an explosion schematic view of the closed stator core tool in one embodiment of the present application.

[0024] Figure 4 It is a three-dimensional schematic view of the present application after removing the waterproof sleeve and the closed stator core tool in one embodiment.

[0025] The purposes, functional features and advantages of the present application will be further described with reference to the drawings.

[0026] Explanation of the drawing reference numbers:

[0027] 10, closed stator core tool; 110, core block; 120, clamp; 121, connection end; 122, groove; 20, core unit; 210, winding part; 211, winding groove; 220, core part; 221, clamping groove; 30, framework; 40, stator core; 50, waterproof sleeve. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and 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 the present application.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0032] Please refer to the accompanying Figures 1-4 The present application provides a motor stator structure for an electronic water pump, which comprises a stator core 40, a framework 30, a plurality of core units 20 and a closed stator core tool 10. First of all, it should be noted that the inner side in the present application refers to the direction towards the inside of the whole device; and unlike the stator core 40 in the prior art which is composed of silicon steel sheets with tooth slot structure, the acting force between the stator and the rotor is generated by electromagnetic force when the motor is working, but the water pump will generate tooth slot torque due to the influence of the stator tooth slot structure, which will increase the vibration frequency of the electronic water pump and produce noise, and the electronic water pump will reduce the service life when working in complex and harsh conditions for a long time. The present application solves the above defects in the prior art by providing a motor stator structure for an electronic water pump, which is as follows:

[0033] The cross section of the framework 30 is hollow on the inner side and in the shape of a circle, the framework 30 is connected to the inner side wall of the stator core 40, and a plurality of core units 20 are arranged on the inner side of the framework 30 along the circumferential direction of the framework 30; wherein each core unit 20 comprises a winding part 210 and a core part 220, one end of the winding part 210 is connected to the inner side wall of the framework 30, and the core part 220 is connected to the other end of the winding part 210; the closed stator core tool 10 is detachably connected between two adjacent core parts 220 to form a core structure with a circular cross section by connecting the plurality of core parts 220.

[0034] Specifically, the motor stator structure for the electronic water pump comprises a stator core 40, a framework 30, a plurality of core units 20 and a closed stator core tool 10. The stator core 40 is a body mounting structure of the entire motor stator structure, which is usually in a hollow circular shape to facilitate the mounting of the framework 30. Therefore, the framework 30 also needs to be in a circular shape to facilitate the matching connection to the inner circumferential side of the stator core 40. The framework 30 is used for mounting and connecting the core units 20 to ensure the generation of electromagnetic force during normal operation. Therefore, the framework 30 also needs to be hollow to facilitate the connection of the core units 20, so that a plurality of core units 20 are arranged on the inner side of the framework 30 in a circumferential direction.

[0035] Each core unit 20 comprises a winding part 210 and a core part 220. The winding part 210 is used for winding the wire to facilitate wiring and avoid the influence of internal structure caused by disordered wire. One end of the winding part 210 is connected to the inner side wall of the framework 30, and the core part 220 is also mounted on the winding part 210. The core part 220 is used as the core of the motor stator to generate electromagnetic force, and is connected to the other end of the winding part 210. Since the core units 20 are arranged in a spaced manner, there is a gap between the adjacent two core units 20. Therefore, the closed stator core tool 10 is added to fill the gap between the core parts 220 of the adjacent two core units 20. The core parts 220 are combined with the closed stator core tool 10 to form a circular core structure. Compared with the traditional core structure with multiple gaps, the magnetic leakage is reduced to enhance the electromagnetic force. In the case of high electromagnetic force, higher cogging torque is not needed, so the cogging torque is relatively reduced, the noise generated by the motor is reduced, and the high efficiency and low noise effect of the motor is ensured.

[0036] As a preferred embodiment of the utility model, each closed stator core tool 10 comprises a core block 110 and two clamps 120 arranged opposite to each other along the extension direction of the core block 110. The core block 110 is arranged in a vertical direction, and the two clamps 120 are connected to the two ends of the core block 110 in the vertical direction. Each clamp 120 is outwardly protruded in the circumferential direction of the framework 30 to form two connection ends 121, and the two connection ends 121 are connected to the adjacent two core parts 220.

[0037] It should be noted that the iron core block 110 adopts the same material as the iron core of the iron core part 220 to ensure the same magnetic induction intensity, and the material of silicon steel sheet can be generally adopted, the silicon steel sheet has good magnetic permeability and small loss, and is an optimal material component for ensuring good stability of the motor; and the clamp 120 is used for fixedly mounting the iron core block 110, so that the iron core block 110 can be stably arranged between two adjacent iron core parts 220, and the two clamps 120 are arranged in vertical opposition and connected to the iron core part 220, so that the iron core block 110 is connected between the two clamps 120, and it can be understood that the two connecting ends 121 of the clamp 120 are outwardly protruded along the circumference of the framework 30 to be connected to the adjacent two iron core parts 220, and the connection is uniform and stable.

[0038] As a preferred embodiment of the utility model, each iron core part 220 is provided with two vertically opposite clamping grooves 221, each clamping groove 221 comprises a clamping groove 221 arranged in the circumference of the framework 30, and the two connecting ends 121 of each clamp 120 are respectively clamped and connected in the clamping grooves 221 of the adjacent two iron core parts 220.

[0039] It should be noted that the two clamping groove units are respectively matched with the upper and lower clamps 120, and each clamping groove unit comprises a clamping groove 221 arranged in the circumference of the framework 30, so that the two adjacent iron core parts 220 have two clamping grooves 221 arranged in opposition, so that the two connecting ends 121 of the clamp 120 are respectively clamped and connected in the clamping grooves 221 of the adjacent two iron core parts 220, so that the installation is more convenient, and the disassembly, maintenance and replacement are simple and efficient.

[0040] As a preferred embodiment of the utility model, one end of each clamp 120 towards the iron core block 110 is recessed to form a recess 122, and the two vertical ends of the iron core block 110 are respectively connected to the recesses 122 of the two clamps 120.

[0041] It should be noted that the recess 122 is used for inserting and mounting the iron core block 110, and the two ends are clamped in the recess 122 to complete the fixed mounting of the clamp 120 to the iron core block 110, which is fast and convenient for processing and production.

[0042] As a preferred embodiment of the utility model, the top end and the bottom end of the winding part 210 are provided with a plurality of winding grooves 211 arranged in the radial direction of the framework 30, and each winding groove 211 is an open arc shape.

[0043] It is worth noting that the traditional motor stator winding method is only the structure of the winding surface, directly winding the cable on the surface, but it is not convenient to wind and wire, and the cable is easy to entangle each other, and in the application, a plurality of winding grooves 211 are arranged at the top and bottom of each winding part 210, so that a bundle of cables can be wound in each winding groove 211, the wiring is clear, the internal structure is well planned, and the process manufacturing precision is greatly improved; preferably, the winding grooves 211 at the top and bottom of each winding part 210 are correspondingly arranged, here corresponding means that the number of winding grooves 211 at the top and bottom is consistent and the arrangement is consistent, so that each bundle of cables can be located in the top and bottom winding grooves 211 of the same vertical plane when winding one turn around the winding part 210, the arrangement is more reasonable, and the winding is stable.

[0044] Further, a waterproof sleeve 50 is connected to the inner side wall of the iron core part 220 and the iron core block 110.

[0045] It should be noted that the waterproof sleeve 50 plays a role of waterproof and heat conduction inside, and is connected to the inner side wall of the iron core part 220 and the iron core block 110 to protect the iron core part 220 and the iron core block 110.

[0046] Further, the length of the iron core block 110 is 15-20 cm.

[0047] It should be understood that the length of the iron core block 110 can be matched with the iron core part 220 to ensure the same magnetic induction intensity, and in a preferred embodiment of the application, the length of the iron core block 110 can be set to 15-20 cm, which can be set according to actual needs by those skilled in the art.

[0048] Further, the number of winding grooves 211 at the top of each winding part 210 is six, and the six winding grooves 211 are arranged along the radial direction of the framework 30.

[0049] It should be noted that the number of winding grooves 211 at the top of each winding part 210 can be determined according to the actual width of the winding groove 211 and the width of the winding part 210, and the width of the winding groove 211 can be set according to the diameter of the cable, and in the application, preferably, the number of winding grooves 211 at the top of each winding part 210 can be set to six, and similarly, the number of winding grooves 211 at the bottom is also six.

[0050] The above are only preferred embodiments of the present application, and do not limit the patent range of the present application, and any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A motor stator structure for an electronic water pump, characterized by, This includes the stator core, frame, multiple core units, and closed-type stator core fixtures; among which, The cross-section of the frame is a circle with a hollow inner side. The frame is connected to the inner wall of the stator core, and multiple core units are arranged at intervals along the circumference of the frame on its inner side; wherein, Each of the core units includes a winding section and a core section. One end of the winding section is connected to the inner sidewall of the frame, and the core section is connected to the other end of the winding section. The closed stator core fixture is detachably connected between two adjacent core sections to enclose and connect multiple core sections to form a core structure with a circumferential cross-section.

2. The motor stator structure for an electronic water pump according to claim 1, characterized by, Each of the closed stator core fixtures includes a core block and two clamps arranged opposite each other along the extension direction of the core block. The core block extends vertically, and the two clamps are respectively connected to the two ends of the core block along the vertical direction. Each clamp has two connecting ends protruding outward along the circumference of the skeleton, and the two connecting ends are respectively connected to two adjacent core parts.

3. The motor stator structure for an electronic water pump according to claim 2, characterized by, Each of the iron cores has two slot units arranged vertically opposite each other. Each slot unit includes slots arranged circumferentially opposite each other along the skeleton. The two connecting ends of each clamp are respectively engaged and connected to the slots of two adjacent iron cores.

4. The motor stator structure for an electronic water pump according to claim 3, characterized by Each of the clamps has a recessed groove at one end facing the iron core block, and the two ends of the iron core block are respectively connected to the grooves of the two clamps along the vertical direction.

5. The motor stator structure for an electronic water pump according to claim 1, characterized by, The top and bottom ends of the winding section are provided with multiple winding grooves arranged radially along the skeleton, and each winding groove is an open arc shape.

6. The motor stator structure for an electronic water pump according to claim 2, characterized by It also includes a waterproof sleeve, which is connected to the inner wall of the iron core and the iron core block.

7. The motor stator structure for an electronic water pump according to claim 2, characterized by The length of the iron core block is 15cm to 20cm.

8. The motor stator structure for an electronic water pump according to claim 5, characterized by The top and bottom winding grooves of each winding section are provided correspondingly.

9. The motor stator structure for an electronic water pump according to claim 8, characterized by, The top of each winding section has six winding slots, which are arranged sequentially along the radial direction of the skeleton.

10. The motor stator structure for an electronic water pump according to claim 2, characterized by, The iron core block is made of silicon steel sheet.

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