L-shaped automobile electronic water pump stator insert structure

Abstract

The utility model discloses an L-shaped automobile electronic water pump stator insert structure, which relates to the field of electronic water pumps, solves the problems that the existing insert is complicated in shape and structure and relatively high in manufacturing cost, and adopts the following scheme that the L-shaped automobile electronic water pump stator insert structure comprises a stator insert welded on a PCB (printed circuit board); the stator insertion sheet is formed by punching, the top end of the stator insertion sheet is in hot melting connection with the insulating winding device, the stator insertion sheet comprises an upper copper sheet and a lower copper sheet, a welding part is arranged in the stator insertion sheet, the welding part is arranged at the contact position of the upper copper sheet and the lower copper sheet, and the upper copper sheet and the lower copper sheet are ultrasonically welded through the welding part; the upper copper sheet is a straight plate sheet, and a lower copper sheet is fixedly welded at the bottom end of the upper copper sheet; according to the L-shaped automobile electronic water pump stator insertion piece structure, through the arrangement of stator insertion piece punch forming, the design complexity is reduced, forming is simple, quality is stable, the structural design flexibility is high, and therefore the layout requirements of specifications and part replacement interference space can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic water pumps, in particular to an L-shaped stator insert structure for automotive electronic water pumps. Background Technique

[0002] With the rapid development of the automotive industry, especially the expansion of the market share of new energy vehicles, the requirements for the intelligent and electrified level of automobiles are increasing day by day, including the increasingly perfect and continuously improving standards for the thermal management control of engines and generators. Automotive electronic water pumps play a key role in the thermal management system because the accuracy, stability, and reliability of electronic water pump control directly affect the performance level of the thermal management system, and the controller, motor assembly, and the electrical connection between them directly affect the performance of the electronic water pump. To a certain extent, the stability and safety of the electrical connection depend on the design of the stator insert;

[0003] After retrieval, in the application with the patent application number 202021077618.5, a stator fixing structure and an electronic water pump using the stator fixing structure are disclosed, including a stator cavity and an insert support. The stator cavity is adapted to accommodate the stator core, and a positioning column is provided in the stator cavity along the central axis direction of the stator cavity. The positioning column is adapted to be inserted into the stator core from one end of the stator core along the axial direction of the stator core; the insert support is adapted to be inserted into the stator core from the other end of the stator core along the axial direction of the stator core, and the part of the insert support inserted into the stator core is adapted to be inserted and tightly fitted with the positioning column; the insert support has a contact surface adapted to abut against the stator core;

[0004] The above application document realizes the installation through the setting between the inserts. The design of the stator insert not only needs to meet the electrical function requirements but also complete the layout in a limited space, and the structural dimensions should be reasonable. At the same time, it should be possible to achieve mass production with low-cost investment in tooling equipment by adopting conventional production processes. Therefore, the stator insert of the electronic water pump is one of the important components of the automotive electronic water pump. The material selection and structural design level not only affect the performance levels of the thermal management system and the electronic water pump but also relate to the feasibility of production and manufacturing.

[0005] Therefore, we propose an L-shaped stator insert structure for automotive electronic water pumps. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides an L-shaped stator insert structure for automotive electronic water pumps, which solves the problems of complex shape structure and relatively high manufacturing cost of the existing inserts.

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: an L-shaped stator insert structure for automotive electronic water pumps, including stator inserts welded to the PCB board;

[0008] The stator inserts are formed by stamping, and there is a heat fusion connection between the top end of the stator inserts and the insulating winding device. The stator inserts include an upper copper sheet and a lower copper sheet. A welding part is provided in the stator inserts. The welding part is arranged at the contact of the upper copper sheet and the lower copper sheet, and the upper copper sheet and the lower copper sheet are ultrasonically welded through the welding part;

[0009] The upper copper sheet is a straight plate, and the lower copper sheet is fixedly welded to the bottom end of the upper copper sheet;

[0010] The lower copper sheet is an arc-shaped side U-shaped sheet. Two groups of welding legs are arranged at the bottom of the tail end of the lower copper sheet, and the upper copper sheet is ultrasonically welded to the front end of the lower copper sheet through the welding part.

[0011] Preferably, an R-shaped sheet is fixedly installed on the outer wall of the upper copper sheet, and a motor wire harness is clamped in the R-shaped sheet;

[0012] Among them, the shape setting of the upper copper sheet enables its top side to be adapted to the shape of the outer side and the shape of the insulating winding device, maximizing the space utilization rate. The setting of the R-shaped sheet can clamp the motor wire harness to ensure stability.

[0013] Preferably, the stator inserts are integrally made of brass, and the surface of the stator inserts is gold-plated;

[0014] Among them, the gold-plating treatment can improve its electrical conductivity and corrosion resistance, and brass has good electrical conductivity and processing performance, ensuring reliable connection and long-term stable operation of the inserts in the electronic water pump.

[0015] Preferably, a first insert, a second insert and a third insert are fixedly welded on the PCB board, and they correspond to the U, V and W phases of the electrode;

[0016] Among them, the setting of the three groups of stator inserts facilitates the connection of the motor.

[0017] Preferably, jacks are provided on the PCB board. The specifications of the jacks are adapted to the specifications of the welding legs in the lower copper sheet, and the stator inserts are welded and installed on the PCB board through the welding between the welding legs and the jacks;

[0018] Among them, the setting of the welding legs facilitates the cooperation with the jacks on the PCB board to fixedly weld the stator inserts on it.

[0019] Preferably, the thickness of the upper copper sheet is 0.9 ± 0.05 mm, the width is 4.9 ± 0.05 mm, the thickness of the lower copper sheet is 1.0 ± 0.05 mm, and the width is 4.0 ± 0.05 mm;

[0020] Among them, when the thickness of the upper copper sheet is 0.9 ± 0.05 mm and the width is 4.9 ± 0.05 mm, the thickness of the lower copper sheet is 1.0 ± 0.05 mm and the width is 4.0 ± 0.05 mm, and the narrowest part is 0.8 ± 0.05 mm, it can not only meet the electrical performance requirements but also meet the requirements of stamping process, matching with PCB holes and material simplification.

[0021] The utility model provides an L-shaped stator insert structure for automotive electronic water pumps, which has the following beneficial effects:

[0022] 1. For the L-shaped stator insert structure of the automotive electronic water pump, through the setting of stamping the stator insert, the design complexity is reduced, the forming is simple and the quality is stable, and the structural design flexibility is high, so as to meet the layout requirements of specifications and interference space for spare parts replacement, reduce the manufacturing cost and difficulty, and solve the problems that the existing insert shape structure is complex and the manufacturing cost is relatively high;

[0023] 2. The overall structure of the L-shaped stator insert structure of the automotive electronic water pump is L-shaped and is designed within the existing limited space. It is laid out outside the space limited range occupied by the insulating winding device, the motor base, and the outer shape and size of the PCB board at the upper, middle and lower parts. The limited space is utilized to achieve a reasonable structure and compact size. There is an R-shaped structure designed at the upper end of the insert to meet the function of clamping the motor wire harness. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the utility model;

[0025] Figure 2 It is a schematic structural diagram of the welding part of the utility model;

[0026] Figure 3 It is a schematic structural diagram of the stator insert of the utility model;

[0027] Figure 4 It is a schematic structural diagram of the upper copper sheet of the utility model;

[0028] Figure 5 It is a schematic structural diagram of the lower copper sheet of the utility model.

[0029] In the figure: 1. PCB board; 2. Stator insert; 21. Upper copper sheet; 22. Lower copper sheet; 201. Welding part; 2-1. First insert; 2-2. Second insert; 2-3. Third insert. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-5 , an embodiment of the present invention provides a technical solution: an L-shaped stator insert structure for an automotive electronic water pump, including a stator insert 2 welded to a PCB board 1; the stator insert 2 is formed by stamping, and the top end of the stator insert 2 is thermally connected to an insulating winding device. The stator insert 2 includes an upper copper sheet 21 and a lower copper sheet 22. A welding portion 201 is provided in the stator insert 2, and the welding portion 201 is provided at the contact of the upper copper sheet 21 and the lower copper sheet 22, and the upper copper sheet 21 and the lower copper sheet 22 are ultrasonically welded through the welding portion 201; the upper copper sheet 21 is a straight plate, and the bottom end of the upper copper sheet 21 is fixedly welded with the lower copper sheet 22; the lower copper sheet 22 is an arc-shaped side U-shaped sheet, and two groups of welding legs are provided at the bottom of the tail end of the lower copper sheet 22, and the front end of the lower copper sheet 22 is ultrasonically welded with the upper copper sheet 21 through the welding portion 201;

[0032] Among them, for this L-shaped stator insert structure of the automotive electronic water pump, through the setting of forming the stator insert 2 by stamping, the design complexity is reduced, the forming is simple and the quality is stable, and the structural design flexibility is high, so as to meet the layout requirements of specifications and component replacement interference space, reduce the manufacturing cost and difficulty, and solve the problems that the existing insert shape structure is complex and the manufacturing cost is relatively high.

[0033] Embodiment 2:

[0034] An R-shaped sheet is fixedly installed on the outer wall of the upper copper sheet 21, and a motor wiring harness is clamped in the R-shaped sheet; among them, the shape setting of the upper copper sheet 21 enables its top side to be adapted to the shape of the outer side and the insulating winding device, maximizing the space utilization rate, while the setting of the R-shaped sheet can clamp the motor wiring harness to ensure stability.

[0035] The whole stator insert 2 is made of brass, and the surface of the stator insert 2 is gold-plated; among them, the gold-plating treatment can improve its electrical conductivity and corrosion resistance, and brass has good electrical conductivity and processing performance, ensuring reliable connection and long-term stable operation of the insert in the electronic water pump.

[0036] A first insert 2-1, a second insert 2-2 and a third insert 2-3 are fixedly welded on the PCB board 1, and they correspond to the U, V and W phases of the electrode; among them, the setting of the three groups of stator inserts 2 facilitates the connection of the motor.

[0037] The PCB board 1 is provided with jacks, and the specifications of the jacks are adapted to the specifications of the welding legs in the lower copper sheet 22. Moreover, the stator insert 2 is welded and installed on the PCB board 1 through the welding between the welding legs and the jacks. Among them, the setting of the welding legs facilitates the cooperation with the jacks on the PCB board 1 to fixedly weld the stator insert 2 thereon.

[0038] The thickness of the upper copper sheet 21 is 0.9±0.05 mm, and the width is 4.9±0.05 mm. The thickness of the lower copper sheet 22 is 1.0±0.05 mm, and the width is 4.0±0.05 mm. Among them, when the thickness of the upper copper sheet 21 is 0.9±0.05 mm and the width is 4.9±0.05 mm, and the thickness of the lower copper sheet 22 is 1.0±0.05 mm and the width is 4.0±0.05 mm, and the narrowest part is 0.8±0.05 mm, it can not only meet the electrical performance requirements but also meet the requirements of stamping process, matching with PCB holes and material simplification.

[0039] In addition, the L-shaped stator insert structure of the automotive electronic water pump has an overall L-shaped structure and is designed within the existing limited space. Among them, the upper, middle and lower parts are respectively arranged outside the space limited by the shapes and dimensions of the insulating winding device, the motor base and the PCB board. The limited space is utilized to achieve a reasonable structure and compact size. There is an R-shaped structure designed at the upper end of the insert to meet the function of clamping the motor wire harness.

[0040] The working principle and usage process of the present utility model: First, the upper copper sheet 21 and the lower copper sheet 22 are welded by ultrasonic welding. Then, the welding legs at the bottom end of the stator insert 2 are inserted into the jacks on the PCB board 1, and welding is carried out between them. Then, the top end of the stator insert 2 is connected to the insulating winding by heat melting connection. With the setting of the shape of the stator insert 2, it can adapt to the working and installation environment of the peripheral components and ensure the stability of the insert structure.

[0041] The above shows and describes the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An L-shaped automotive electronic water pump stator insert structure, comprising a stator insert (2) welded on a PCB board (1); Features: The stator insert (2) is formed by stamping, the top end of the stator insert (2) is hot-melt-connected to the insulating winding device, the stator insert (2) comprises an upper copper sheet (21) and a lower copper sheet (22), a welding portion (201) is provided in the stator insert (2), the welding portion (201) is provided at the contact position between the upper copper sheet (21) and the lower copper sheet (22), and the upper copper sheet (21) and the lower copper sheet (22) are ultrasonically welded via the welding portion (201); The upper copper sheet (21) is a straight plate, and the lower copper sheet (22) is fixedly welded to the bottom end of the upper copper sheet (21); The lower copper sheet (22) is an arc-shaped U-shaped sheet, and two groups of welding legs are arranged at the bottom of the tail end of the lower copper sheet (22), and the front end of the lower copper sheet (22) is ultrasonically welded to the upper copper sheet (21) through a welding part (201).

2. The L-shaped automotive electronic water pump stator insert structure according to claim 1, characterized in that: An R-shaped sheet is fixedly mounted on the outer wall of the upper copper sheet (21), and a motor wiring harness is clamped in the R-shaped sheet.

3. The L-shaped automotive electronic water pump stator insert structure according to claim 1, characterized in that: The stator insert (2) is entirely made of brass, and the surface of the stator insert (2) is gold-plated.

4. The L-shaped automotive electronic water pump stator insert structure according to claim 1, characterized in that: The PCB board (1) is fixedly welded with a first plug-in sheet (2-1), a second plug-in sheet (2-2) and a third plug-in sheet (2-3), and they correspond to the U, V and W phases of the electrodes.

5. The L-shaped automotive electronic water pump stator insert structure according to claim 1, characterized in that: The PCB board (1) is provided with a plug hole, the specification of which matches the specification of the welding leg in the lower copper sheet (22), and the stator insert sheet (2) is welded to the PCB board (1) by welding the welding leg to the plug hole.

6. The L-shaped automotive electronic water pump stator insert structure according to claim 1, characterized in that: The thickness of the upper copper sheet (21) is 0.9±0.05 mm and the width is 4.9±0.05 mm, and the thickness of the lower copper sheet (22) is 1.0±0.05 mm and the width is 4.0±0.05 mm.

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