Integrated stator module, motor and electronic water pump

Abstract

The utility model discloses an integrated stator module, motor and electronic water pump relates to motor, electronic water pump and its spare part technical field, it includes stator subassembly and drive circuit board, stator subassembly and drive circuit board are configured as fixed mechanical connection structure, also be configured as electrical connection structure. The utility model mainly solves how to provide integrated stator module for motor or electronic water pump problem, the stator subassembly and drive circuit board of the utility model constitute a whole module, can whole assembly to motor or electronic water pump, need not respectively assemble stator subassembly and drive circuit board, also need not again to stator subassembly and drive circuit board make electrical connection handle, still can conveniently make integral plastic package or waterproof adhesive seal processing to the integrated stator module of the utility model, has saved motor or electronic water pump's assembly procedure and manufacturing cost effectively, has improved motor or electronic water pump's production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of motors, electronic water pumps and their components, specifically an integrated stator module, motor and electronic water pump. Background Technology

[0002] Electric water pumps have high output efficiency and can achieve precise flow control. Therefore, they are widely used in home appliances, automobiles and industrial equipment. For example, home appliances such as water-heated mattresses, air conditioners, dishwashers, robot vacuum cleaners and humidifiers are increasingly equipped with electric water pumps to achieve precise quantitative liquid circulation / discharge functions.

[0003] The stator assembly is one of the core components of an electric water pump. When energized, it generates a rotating magnetic field, which drives the rotor assembly of the electric water pump to rotate in a magnetic coupling manner.

[0004] Highly integrated motors or electric water pumps are usually equipped with a drive circuit board, which carries a main controller, a stator drive module (or a stator drive chip), and necessary peripheral circuits. It can output voltage and / or current of a specific waveform to the stator assembly to drive the stator assembly to operate according to a predetermined program (generating a predetermined spatial shape and a changing rotating magnetic field), thereby correctly driving the rotor assembly to rotate.

[0005] In the existing technology, the stator assembly and drive circuit board of motors or electric water pumps are usually separate structures. During assembly, the stator assembly and drive circuit board need to be installed into the housing of the motor or electric water pump according to the process, and the stator assembly and drive circuit board need to be electrically connected according to the process (such as direct welding, terminal crimping / welding, and connector connection). The above assembly method is obviously more complicated and requires more labor costs.

[0006] In conclusion, how to provide integrated stator modules for motors or electric water pumps to save on assembly procedures and manufacturing costs has become one of the urgent problems to be solved. Utility Model Content

[0007] The purpose of this utility model is to provide an integrated stator module, motor and electronic water pump, which can effectively save the assembly process and manufacturing cost of motor or electronic water pump.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an integrated stator module, comprising a stator assembly and a drive circuit board; the stator assembly and the drive circuit board are configured as both a fixed mechanical connection structure and an electrical connection structure.

[0009] In the above technical solution, the stator assembly includes a stator core-support composite, coils, and terminals; the stator core-support composite is configured with: an annular yoke, a plurality of teeth circumferentially distributed in the inner ring of the yoke, and shoe portions disposed at the free ends of each of the teeth; the coils are wound around each of the teeth; the terminals are disposed at at least one of the yoke, teeth, and shoe portions of the stator core-support composite, and the terminals and the coils are configured to be electrically connected; the drive circuit board is fixed to the stator core-support composite, and the drive circuit board and the terminals are configured to be electrically connected.

[0010] In the above technical solution, the stator core-support composite of the stator assembly includes a stator core and a plastic-coated outer shell formed on the surface of the stator core.

[0011] In the above technical solution, at least a portion of the terminal is embedded in the plastic-coated shell of the stator core-support composite, and at least another portion of the terminal is exposed outside the plastic-coated shell of the stator core-support composite.

[0012] In the above technical solution, a terminal fixing seat is formed at the plastic-coated outer shell of the stator core-support composite; the terminal is embedded in the terminal fixing seat and penetrates the terminal fixing seat, so that both ends of the terminal are exposed outside the terminal fixing seat.

[0013] In the above technical solution, a circuit board fixing post is provided at the stator core-support composite; a support platform and a fixing claw are arranged sequentially from the root of the circuit board fixing post to its free end; one side of the drive circuit board is supported by the support platform of the circuit board fixing post, and the other side of the drive circuit board is fixed by the fixing claw of the circuit board fixing post.

[0014] In the above technical solution, the drive circuit board is provided with terminal holes; when the drive circuit board is fixed at the stator core-support composite, at least a portion of the terminals are inserted into the terminal holes of the drive circuit board.

[0015] In the above technical solution, a circuit board positioning post is provided at the stator core-support composite; a positioning hole is provided at the drive circuit board; when the drive circuit board is fixed at the stator core-support composite, the circuit board positioning post at the stator core-support composite is inserted into the positioning hole of the drive circuit board.

[0016] An electric motor comprising the aforementioned integrated stator module.

[0017] An electronic water pump comprising the aforementioned integrated stator module.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: The integrated stator module, motor, and electronic water pump of this utility model have a stator assembly and a drive circuit board configured as both a fixed mechanical connection structure and an electrical connection structure, so that the stator assembly and the drive circuit board form an integral module. This allows for the overall assembly of the stator assembly and the drive circuit board into the motor or electronic water pump without the need for separate assembly of the stator assembly and the drive circuit board, or for further electrical connection processing of the stator assembly and the drive circuit board. It also allows for convenient overall plastic encapsulation or waterproof sealing of the integrated stator module of this utility model, effectively saving assembly procedures and manufacturing costs for the motor or electronic water pump, and improving the production efficiency of the motor or electronic water pump. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural view of the present invention.

[0020] Figure 2 This is an exploded structural view of the present invention.

[0021] Figure 3 This is a cross-sectional view of the present invention.

[0022] The attached figures are labeled as follows: 1. Stator assembly; 11. Stator core-support composite; 111. Stator core; 112. Plastic-coated outer shell; 1121. Terminal fixing seat; 113. Yoke; 114. Tooth; 115. Shoe; 116. Circuit board fixing post; 1161. Support platform; 1162. Fixing claw; 117. Circuit board positioning post; 12. Coil; 13. Terminal; 2. Drive circuit board; 21. Terminal connection hole; 22. Positioning hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This embodiment provides an integrated stator module that can be applied to motors or electric water pumps to provide a rotating magnetic field to drive the rotor assembly to rotate.

[0025] Please see Figures 1-3 The integrated stator module of this embodiment includes a stator assembly 1 and a drive circuit board 2.

[0026] The drive circuit board 2 is a printed circuit board (PCB), which is equipped with at least a main controller, a stator drive module (or a stator drive chip) and necessary peripheral circuits.

[0027] The stator assembly 1 and the drive circuit board 2 are configured as both a fixed mechanical connection structure and an electrical connection structure.

[0028] Specifically, the stator assembly 1 includes a stator core-support composite 11, a coil 12, and a terminal 13; wherein the coil 12 is formed by winding enameled wire a certain number of turns, and the terminal 13 is a strip-shaped conductive metal structure capable of conducting electrical energy; the stator core-support composite 11 is provided with: an annular yoke 113, a plurality of teeth 114 circumferentially distributed in the inner ring of the yoke 113, and a shoe 115 disposed at the free end of each tooth 114; a coil 12 is wound at each tooth 114; the terminal 13 is disposed at at least one of the yoke 113, teeth 114, and shoe 115 of the stator core-support composite 11, and the terminal 13 and the coil 12 are configured to be electrically connected; the drive circuit board 2 is fixed to the stator core-support composite 11, and the drive circuit board 2 and the terminal 13 are configured to be electrically connected.

[0029] More specifically, the stator core-support composite 11 of the stator assembly 1 includes a stator core 111 and a plastic-coated outer shell 112 formed on the surface of the stator core 111; in this embodiment, the outer ring of the yoke portion 113 of the stator core-support composite 11 is exposed outside the plastic-coated outer shell 112, and the end face of the shoe portion 115 of the stator core-support composite 11 is also exposed outside the plastic-coated outer shell 112.

[0030] Specifically, at least a portion of the terminal 13 is embedded in the plastic-coated shell 112 of the stator core-support composite 11, and at least another portion of the terminal 13 is exposed outside the plastic-coated shell 112 of the stator core-support composite 11.

[0031] More specifically, a terminal fixing seat 1121 is formed at the plastic-coated shell 112 of the stator core-support composite 11. In fact, the terminal fixing seat 1121 is a support seat type structure integrally formed at the plastic-coated shell 112. The terminal 13 is embedded in the terminal fixing seat 1121 and penetrates the terminal fixing seat 1121, so that both ends of the terminal 13 are exposed at the terminal fixing seat 1121.

[0032] It should be noted that the terminal 13 and the stator core 111 are placed into the molding mold of the plastic-coated shell 112, plastic material is injected into the molding mold, and after the plastic material is cured, the stator core-support composite 11 with the terminal 13 is obtained by demolding.

[0033] Specifically, a circuit board fixing post 116 is provided at the stator core-support composite 11. In fact, the circuit board fixing post 116 is a columnar structure integrally formed on the plastic-coated shell 112. From its root to its free end, the circuit board fixing post 116 is provided with a support platform 1161 and a fixing claw 1162 in sequence. The support platform 1161 is a platform-shaped structure, and the fixing claw 1162 is a hook-shaped structure. One side of the drive circuit board 2 is supported by the support platform 1161 of the circuit board fixing post 116, and the other side of the drive circuit board 2 is fixed by the fixing claw 1162 of the circuit board fixing post 116. In this way, a fixed mechanical connection structure between the stator assembly 1 and the drive circuit board 2 is realized.

[0034] Specifically, the drive circuit board 2 is provided with a terminal hole 21, which is a copper-clad hole that connects to the printed circuit of the drive circuit board 2. When the drive circuit board 2 is fixed at the stator core-support composite 11, at least a portion of the terminal 13 is inserted into the terminal hole 21 of the drive circuit board 2. In some possible embodiments, after the terminal 13 is inserted into the terminal hole 21 of the drive circuit board 2, the mechanical fixation and electrical connection between the terminal 13 and the terminal hole 21 are achieved by soldering. In other possible embodiments, one end of the terminal 13 is configured as an expansion structure (also known as a "fisheye terminal 13"). After the terminal 13 is inserted into the terminal hole 21 of the drive circuit board 2, it is interference-fitted with the terminal hole 21 of the drive circuit board 2, thereby achieving mechanical fixation and electrical connection between the terminal 13 and the terminal hole 21 without soldering.

[0035] Furthermore, a circuit board positioning post 117 is provided at the stator core-support composite 11. In fact, the circuit board positioning post 117 is a columnar structure integrally formed on the plastic-coated shell 112. A positioning hole 22 is provided at the drive circuit board 2. The positioning hole 22 is a through hole that penetrates the drive circuit board 2. When the drive circuit board 2 is fixed at the stator core-support composite 11, the circuit board positioning post 117 at the stator core-support composite 11 is inserted into the positioning hole 22 of the drive circuit board 2 to achieve accurate positioning of the drive circuit board 2 and the stator core-support composite 11.

[0036] It should be noted that both ends of terminal 13 are exposed on terminal mounting base 1121, and the end of coil 12 is wound around one end of terminal 13. The terminal hole 21 of drive circuit board 2 is engaged with the other end of terminal 13. In this way, the electrical connection between drive circuit board 2 and coil 12 is realized through coil 12, thereby realizing the electrical connection structure between stator assembly 1 and drive circuit board 2.

[0037] This embodiment also provides a motor that includes the integrated stator module described above.

[0038] This embodiment also provides an electronic water pump, which includes the integrated stator module described above.

[0039] In this embodiment, the integrated stator module, motor, and electric water pump have a stator assembly 1 and a drive circuit board 2 configured as both a fixed mechanical connection structure and an electrical connection structure. This allows the stator assembly 1 and the drive circuit board 2 to form a single module, enabling them to be assembled as a whole into the motor or electric water pump without the need for separate assembly of the stator assembly 1 and the drive circuit board 2, or for further electrical connection processing between them. Furthermore, the integrated stator module of this embodiment can be easily encapsulated or sealed with waterproof adhesive, effectively saving on assembly procedures and manufacturing costs for the motor or electric water pump, and improving the production efficiency of the motor or electric water pump.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated stator module, characterized by, Includes stator assembly and drive circuit board; The stator assembly and the drive circuit board are configured as both a fixed mechanical connection structure and an electrical connection structure. The stator assembly includes a stator core-support composite, coils, and terminals; The stator core-support composite is configured with: an annular yoke, a plurality of teeth circumferentially distributed in the inner ring of the yoke, and a boot portion disposed at the free end of each of the teeth. Each of the aforementioned teeth is wound with the aforementioned coil; The terminal is disposed at at least one of the yoke, tooth, and shoe portions of the stator core-support composite, and the terminal and the coil are configured to be electrically connected. The drive circuit board is fixed to the stator core-support composite, and the drive circuit board and the terminal are configured as an electrical connection structure. The stator core-support composite is equipped with a circuit board fixing post; The circuit board fixing post is provided with a support platform and a fixing hook in sequence from its root to its free end. One side of the drive circuit board is supported by the support platform of the circuit board fixing post, and the other side of the drive circuit board is fixed by the fixing claw of the circuit board fixing post.

2. The integrated stator module of claim 1, wherein, The stator core-support composite of the stator assembly includes a stator core and a plastic-coated outer shell molded onto the surface of the stator core.

3. The integrated stator module according to claim 2, characterized in that, At least a portion of the terminal is embedded in the plastic-coated shell of the stator core-support composite, and at least another portion of the terminal is exposed outside the plastic-coated shell of the stator core-support composite.

4. The integrated stator module according to claim 3, characterized in that, A terminal fixing seat is formed at the plastic-coated outer shell of the stator core-support composite; The terminal is embedded in the terminal holder and penetrates the terminal holder, so that both ends of the terminal are exposed outside the terminal holder.

5. The integrated stator module according to any one of claims 1-4, characterized in that, The drive circuit board is equipped with terminal holes; When the drive circuit board is fixed at the stator core-support composite, at least a portion of the terminals are inserted into the terminal holes of the drive circuit board.

6. The integrated stator module according to any one of claims 1-4, characterized in that, The stator core-support composite is equipped with a circuit board positioning post. The drive circuit board is provided with positioning holes; When the drive circuit board is fixed at the stator core-support composite, the circuit board positioning post at the stator core-support composite is inserted into the positioning hole of the drive circuit board.

7. An electric motor, characterized in that, Includes the integrated stator module as described in any one of claims 1-6.

8. An electronic water pump, characterized in that, Includes the integrated stator module as described in any one of claims 1-6.

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