Electric control box assembly, motor and washing machine

Abstract

The utility model discloses an electric control box assembly, the electric control box assembly is used for a motor, the electric control box assembly comprises a protective cover, a circuit board and a heat radiator, the circuit board comprises a driving module, the heat radiator is arranged on the circuit board and is thermally coupled with the driving module, and the protective cover is used for covering the circuit board and is provided with a heat radiation opening corresponding to the heat radiator. According to the electric control box assembly, the radiators are arranged at the driving module in a concentrated mode and make contact with the driving module, the heat dissipation pertinence of the radiators is improved, excessive heat dissipation capacity is avoided, meanwhile, the protective cover is provided with the heat dissipation openings so that the radiators can make full contact with the outside world, the heat dissipation efficiency of the radiators can be further improved, and the service life of the radiators is prolonged. And the protective cover is only provided with the heat dissipation opening at the radiator, so that the heat dissipation efficiency of the radiator is ensured, the protection function of the protective cover is maintained, the service life of the electric control box assembly is prolonged, and the maintenance cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and more specifically, to an electric control box assembly, a motor and a washing machine. Background Art

[0002] In the related art, the circuit board of the motor includes a driving module. The driving module generates a large amount of heat during operation and needs to be cooled. On the other hand, in order to protect the circuit board, the circuit board is generally provided with a protective cover. In order to prevent the protective cover from affecting the heat dissipation of the driving module, the protective cover generally adopts a metal protective cover. The driving module transfers the heat to the metal protective cover in the form of convection, and the metal protective cover then exchanges heat with the environment in the form of convection to dissipate heat. However, since the heat dissipation is not targeted, the heat dissipation efficiency is low. In addition, the cost of the metal protective cover is relatively high. Utility Model Content

[0003] Embodiments of the present application provide an electric control box assembly, a motor and a washing machine.

[0004] The electric control box assembly of the embodiment of the present application is used for a motor, and includes a protective cover, a circuit board and a radiator. The circuit board includes a drive module. The radiator is arranged on the circuit board and thermally coupled with the drive module. The protective cover is used to cover the circuit board and has a heat dissipation opening corresponding to the radiator.

[0005] In the protective cover of the embodiment of the present application, the radiator is centrally arranged at the drive module and in contact with the drive module, so that the targeted heat dissipation of the radiator is improved and excessive heat dissipation capacity is avoided. At the same time, the heat dissipation openings in the protective cover are conducive to full contact between the radiator and the outside world, thereby further improving the heat dissipation efficiency of the radiator. The protective cover only has heat dissipation openings at the radiator, which maintains the protective function of the protective cover while ensuring the heat dissipation efficiency of the radiator, which is beneficial to improving the service life of the electric control box assembly and saving maintenance costs.

[0006] In some embodiments, the protective cover is a plastic protective cover.

[0007] Thus, the plastic protective cover is relatively light and easy to install and move. At the same time, the plastic protective cover is insulated and corrosion-resistant, has low manufacturing difficulty and cost, and meets environmental protection requirements.

[0008] In some embodiments, the protective cover includes a side plate opposite to the circuit board, and the heat dissipation opening is formed in the side plate.

[0009] With such an arrangement, since the side panels have a larger area, it is easier to process the heat dissipation openings. At the same time, it is also beneficial to set up heat dissipation openings with larger areas to improve heat dissipation efficiency.

[0010] In some embodiments, an orthographic projection of the heat sink on the side plate falls into the heat dissipation opening.

[0011] In this way, when the radiator transfers heat to the outside, it is easier to transfer heat to the outside from the heat dissipation opening, and will not be blocked by the side panels, thereby affecting the heat dissipation efficiency.

[0012] In some embodiments, the protective cover also includes a top plate and a bottom plate connected to the peripheral side of the side plate, the top plate is provided with a plurality of first heat dissipation holes corresponding to the radiator, the bottom plate is provided with a plurality of second heat dissipation holes corresponding to the radiator, the radiator includes a plurality of heat dissipation fins, the plurality of heat dissipation fins form a plurality of heat dissipation channels, the plurality of first heat dissipation holes, the plurality of heat dissipation channels and the plurality of second heat dissipation holes constitute a convection heat dissipation channel.

[0013] In this way, the additional heat dissipation holes facilitate air to enter the protective cover and cool down the internal radiator and drive module, which is beneficial to improving the heat dissipation efficiency. The first heat dissipation hole and the second heat dissipation hole are arranged relatively up and down along the gravity direction, and the convection effect generated by gravity can be used to dissipate heat. The convection heat dissipation channel formed by the first heat dissipation hole, the heat dissipation channel and the second heat dissipation hole is beneficial to further improve the heat dissipation efficiency.

[0014] A motor according to another embodiment of the present application includes the electric control box assembly described in any one of the above items.

[0015] In some embodiments, the motor includes a base and a soldering pin, the soldering pin extends from the base, the circuit board is formed with a soldering hole, the circuit board is arranged on the base, the soldering pin passes through the soldering hole and is soldered on the circuit board to electrically connect the circuit board to the motor.

[0016] Thus, compared with the related art of using a bundle of power lines to realize the electrical connection between the circuit board and the motor, using solder pins to realize the electrical connection between the circuit board and the motor is conducive to reducing costs. In addition, the plug-in welding connection between the solder pin and the circuit board is conducive to making full use of space, improving the assembly speed of the solder pin and the circuit board, and helping to achieve high-quality control and automated operation, thereby improving production efficiency. In addition, plug welding can make the connection between the circuit board and the motor easier and more convenient, and there is no need to remove the tin spray or lead paste and chemicals like conventional welding, thereby simplifying the disassembly and maintenance process.

[0017] In some embodiments, the motor includes a base, and the protective cover includes a buckle and a fastening hole. The protective cover is fastened to the base by the buckle and fastened to the base by a fastener passing through the fastening hole, thereby being installed on the base.

[0018] In this way, the base and the protective cover are detachably connected, which is convenient for maintenance and replacement of components inside the protective cover, which is conducive to saving the maintenance cost of the motor. At the same time, when the protective cover is damaged, the detachable connection between the body and the protective cover can also facilitate the maintenance and replacement of the protective cover.

[0019] In certain embodiments, the fastener comprises a screw or a rivet.

[0020] With such arrangement, the screws or rivets are all low-cost standard parts that have been purchased, which is beneficial to reducing the production cost of the motor assembly.

[0021] A washing machine according to another embodiment of the present application comprises a motor as described in any one of the above items.

[0022] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic structural diagram of a motor according to an embodiment of the present application;

[0025] Figure 2 is a schematic structural diagram of a circuit board and a heat sink according to an embodiment of the present application;

[0026] Figure 3 It is a schematic structural diagram of a protective cover according to an embodiment of the present application;

[0027] Figure 4 It is a schematic structural diagram of a protective cover according to another embodiment of the present application.

[0028] Description of the main component symbols: motor 100, main body 10, base 11, welding pin 111, through hole 112, plastic coating layer 12, electric control box assembly 20, circuit board 21, drive module 211, welding hole 212, radiator 22, heat dissipation base 221, heat sink 222, protective cover 23, side plate 231, heat dissipation opening 2311, reinforcing rib 2312, top plate 232, first heat dissipation hole 2321, bottom plate 233, second heat dissipation hole 2331, first connecting plate 234, second connecting plate 235, buckle 236, reinforcing rib 2361, fastening hole 237, mounting ring 238. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limitations on the present application. In the description of the present application, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] The disclosure of this article provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0031] A washing machine is a cleaning appliance that uses electrical energy to generate mechanical action to wash clothes. There are many types of washing machines, and common washing machines include pulsator washing machines and drum washing machines. Among them, the motor assembly of both pulsator washing machines and drum washing machines is one of the core components of the washing machine.

[0032] The working principle of the motor is to input electrical energy into the motor through the power supply system, convert the electrical energy into mechanical energy, drive the washing tub or washing shaft to rotate, thereby completing the actions of washing, rinsing and drying. The performance of the motor directly affects the washing effect and operating stability of the washing machine.

[0033] In the related art, the circuit board of the motor includes a driving module. During operation, the driving module needs to convert electrical energy into other forms of energy, such as mechanical energy, light energy or sound energy. In this conversion process, part of the energy will inevitably be converted into heat energy, causing the temperature of the driving module to rise. Therefore, the driving module will generate a large amount of heat during operation, and there is a need for heat dissipation. On the other hand, in order to protect the circuit board, the circuit board is generally equipped with a protective cover. In order to prevent the protective cover from affecting the heat dissipation of the driving module, the protective cover generally adopts a metal protective cover. The driving module transfers heat to the metal protective cover in the form of convection, and the metal protective cover then exchanges heat with the environment in the form of convection to dissipate heat. However, since the heat dissipation is not targeted, the heat dissipation efficiency is low. In addition, the cost of the metal protective cover is relatively high.

[0034] The washing machine includes a motor 100, see Figure 1 The embodiment of the present application provides a motor 100, which includes a main body 10 and an electric control box assembly 20, wherein the electric control box assembly 20 includes a circuit board 21, a heat sink 22, and a protective cover 23. The electric control box assembly 20 includes a circuit board 21 and a heat sink 22, wherein the circuit board 21 includes a driving module 211, the heat sink 22 is disposed on the circuit board 21, and is thermally coupled to the driving module 211, and the protective cover 23 is used to cover the circuit board 21, and is provided with a heat dissipation opening 2311 corresponding to the heat sink 22.

[0035] In the protective cover 23 of the embodiment of the present application, the radiator 22 is centrally arranged at the drive module 211 and in contact with the drive module 211, so that the targeted heat dissipation of the radiator 22 is improved and excessive heat dissipation capacity is avoided. At the same time, the protective cover 23 has a heat dissipation opening 2311, which is beneficial for the radiator 22 to fully contact with the outside world, thereby further improving the heat dissipation efficiency of the radiator 22. The protective cover 23 only has a heat dissipation opening 2311 at the radiator 22. While ensuring the heat dissipation efficiency of the radiator 22, the protective function of the protective cover is maintained, which is beneficial to improving the service life of the electric control box assembly 20 and saving maintenance costs.

[0036] Specifically, the motor 100 refers to an electromagnetic device that realizes electric energy conversion or transmission according to the law of electromagnetic induction. The main function of the motor 100 is to generate a driving torque as a power source for electrical appliances or various machines. The motor 100 has a wide range of applications in household appliances. The motor 100 has many different types. In household appliances, the motor 100 is usually a drive motor, wherein the drive motor is further divided into an ordinary drive motor and a plastic-coated stator drive motor. In this embodiment, the motor 100 is a plastic-coated stator drive motor.

[0037] The circuit board 21, also known as a circuit board or a PCB (Printed Circuit Board), is made by electronic printing technology, so it is called a "printed" circuit board 21. The circuit board 21 is a provider of electrical connections for electronic components. It uses electronic printing technology to print circuits on a dielectric substrate, and then solders other components to the circuit board 21 through a series of processes to achieve circuit connection and signal transmission. In this embodiment, the circuit board 21 is used to connect components such as the drive module 211 and the motor 100 and form a control circuit for controlling the drive motor.

[0038] The driving module 211 is a special module, and its main function is to simulate the upper level module of the tested module, which is equivalent to the main program of the tested module. The driving module 211 receives data and transmits these data to the tested module to start and enable the tested module, and then outputs the corresponding results. In the embodiment of the present application, the driving module 211 is a motor driving module. The motor driving module includes a transistor module, a thyristor (silicon controlled rectifier) ​​module, an IGBT module, and an integrated driving module 211, etc., which are used to control the operation of the motor 100. In addition, there is also a driving module 211 for driving a specific type of motor 100, such as a stepping motor driving module, a servo motor driving module, etc.

[0039] See also Figure 2 , the radiator 22 is a general term for a series of devices used to conduct and release heat, and its function is usually to ensure the normal operation of the equipment and extend its service life. In terms of material, the radiator 22 can be divided into a cast iron radiator, a steel radiator and an aluminum alloy radiator. In terms of working principle, the radiator 22 can be divided into an air-cooled radiator 22 and a water-cooled radiator.

[0040] In this embodiment, the radiator 22 is an aluminum alloy air-cooled radiator. Aluminum alloy material has high thermal conductivity, and can effectively and quickly conduct the heat generated by the heat source to the radiator 22, and dissipate the heat to other parts of the outside world through the radiator 22, thereby improving the heat dissipation efficiency. Compared with other metal materials, aluminum alloy has a lighter weight, which makes the aluminum alloy radiator easier to install and disassemble while reducing the weight of the overall equipment. A dense oxide film will form on the surface of the aluminum alloy, which can effectively resist corrosion and oxidation and extend the service life of the aluminum alloy air-cooled radiator.

[0041] Aluminum alloy air-cooled radiators not only have good heat dissipation effects, but also have beautiful appearances, which can meet the aesthetic needs of different consumers. At the same time, their design also takes practicality into consideration, such as easy cleaning and maintenance. Aluminum alloy air-cooled radiators not only have excellent performance, but also have relatively low costs, making them a very cost-effective cooling solution.

[0042] In other embodiments, the radiator 22 may also be a water-cooled radiator. It is easy to understand that since the radiator 22 is used on the driving module 211 of the circuit board 21, the water-cooled radiator should be fully considered in terms of sealing and preventing refrigerant leakage when setting and installing, so as to avoid short circuit of the circuit board 21 or the driving module 211 due to refrigerant leakage, thereby causing damage to the motor 100.

[0043] See also Figure 1 The protective cover 23 is a device used to protect components such as the circuit board 21 or the radiator 22 from external substances, extend their service life, and improve stability. It can effectively prevent dust, water droplets, grease and other substances from entering components such as the circuit board 21 or the radiator 22, thereby affecting their heat dissipation effect and stability. At the same time, the protective cover 23 can also assist in heat dissipation to avoid problems such as computer freezes or data loss caused by overheating of components such as the circuit board 21 or the radiator 22. In addition, it can also reduce the risks caused by misoperation and ensure that components such as the circuit board 21 or the radiator 22 operate in an efficient and safe environment.

[0044] The protective cover 23 generally has the characteristics of simple structure and convenient installation. When making a specific selection, the model and specification of the appropriate protective cover 23 can be selected according to the needs to ensure that the protective cover 23 can completely cover the components such as the circuit board 21 and the driving module 211 and provide effective protection.

[0045] The heat dissipation opening 2311 is an opening opened to prevent the protective cover 23 from hindering the heat dissipation of the radiator 22. The heat dissipation opening 2311 is arranged corresponding to the radiator 22. In this embodiment, the heat dissipation opening 2311 has the same shape as the radiator 22, and the size of the heat dissipation opening 2311 is equal to or slightly larger than the cross-sectional size of the radiator 22.

[0046] See also Figure 1 In some embodiments, the protective cover 23 is a plastic protective cover 23 .

[0047] Thus, the plastic protective cover 23 is relatively light and easy to install and move. At the same time, the plastic protective cover 23 is insulated and corrosion-resistant, has low manufacturing difficulty and cost, and meets environmental protection requirements.

[0048] Specifically, the material of the plastic protective cover 23 may include polyvinyl chloride, polystyrene, polyethylene, polypropylene, phenolic resin, amino resin, etc., and the specific material can be selected according to actual needs. In this embodiment, the material of the protective cover 23 can also be selected from some plastics with good thermal conductivity, such as polyphenylene ether, polyurethane, polyether amide, etc.

[0049] It is easy to understand that in this embodiment, the protective cover 23 is an integrated structure that is integrally processed and formed. Therefore, in order to facilitate the demoulding of the protective cover 23 and avoid problems such as stress concentration on the protective cover 23, the corners of the protective cover 23 are provided with transition fillets.

[0050] See also Figure 1 and Figure 3 In some embodiments, the protective cover 23 includes a side plate 231 opposite to the circuit board 21 , and a heat dissipation opening 2311 is formed in the side plate 231 .

[0051] With such arrangement, since the side plate 231 has a larger area, it is easier to process the heat dissipation opening 2311 . At the same time, it is also beneficial to arrange a heat dissipation opening 2311 with a larger area, thereby improving the heat dissipation efficiency.

[0052] Specifically, the side plate 231 is arranged parallel to the circuit board 21 to help form a more efficient heat dissipation channel and optimize the heat dissipation performance. In order to enhance the structural strength at the heat dissipation opening 2311, a reinforcing rib 2312 is further provided on the surface of the side plate 231 away from the circuit board 21. The reinforcing rib 2312 is annular and is arranged at the edge of the heat dissipation opening 2311.

[0053] In some embodiments, the orthographic projection of the heat sink 22 on the side plate 231 falls into the heat dissipation opening 2311 .

[0054] In this way, when the radiator 22 transfers heat to the outside, it is easier to transfer heat to the outside through the heat dissipation opening 2311 and will not be blocked by the side plate 231 to affect the heat dissipation efficiency.

[0055] Specifically, the side plate 231 is parallel to the circuit board 21 , and the heat sink 22 is projected in a direction perpendicular to the side plate 231 and is located in the heat dissipation opening 2311 .

[0056] In some embodiments, the protective cover 23 also includes a top plate 232 and a bottom plate 233 connected to the peripheral side of the side plate 231, the top plate 232 is provided with a plurality of first heat dissipation holes 2321 corresponding to the radiator 22, the bottom plate 233 is provided with a plurality of second heat dissipation holes 2331 corresponding to the radiator 22, the radiator 22 includes a plurality of heat dissipation fins 222, the plurality of heat dissipation fins 222 form a plurality of heat dissipation channels, the plurality of first heat dissipation holes 2321, the plurality of heat dissipation channels and the plurality of second heat dissipation holes 2331 constitute a convection heat dissipation channel.

[0057] The top plate 232 defines a first heat dissipation hole 2321 corresponding to the radiator 22 , and the bottom plate 233 defines a second heat dissipation hole 2331 corresponding to the radiator 22 .

[0058] In this way, the additional heat dissipation holes facilitate air to enter the protective cover 23 and cool the internal radiator 22 and the drive module 211, which is beneficial to improve the heat dissipation efficiency. The first heat dissipation hole 2321 and the second heat dissipation hole 2331 are arranged relatively up and down along the gravity direction, and the convection effect generated by gravity can be used for heat dissipation, which is beneficial to further improve the heat dissipation efficiency.

[0059] Specifically, the radiator 22 includes a heat dissipation base 221, wherein the heat dissipation base 221 is responsible for coupling with the driving module 211. Specifically, the heat dissipation base 221 is in the shape of a rectangular sheet, and the heat dissipation base 221 is arranged in close contact with the driving module 211. Furthermore, a mounting hole can be set on the heat dissipation base 221, and the heat dissipation base 221 is installed on the circuit board 21 by fasteners passing through the mounting hole, so that the first plane and the second plane are more closely fitted.

[0060] Preferably, heat dissipation silica gel may be provided between the heat dissipation base 221 and the driving module 211. Heat dissipation silica gel, also known as thermally conductive silica gel or thermally conductive silicone rubber, is a thermally conductive material. It is made of silica gel as a base material and various thermally conductive powders (such as aluminum oxide, boron nitride, silicon nitride, silver ions, etc.) are added to improve the thermal conductivity of the composite material. Heat dissipation silica gel has the characteristics of high thermal conductivity, high flexibility, low thermal resistance, etc., and can play a key role in the heat conduction process.

[0061] The heat sink 22 also includes a heat sink 222 disposed on the heat sink base 221. The heat sink 222 is also called a heat sink fin. During the heat dissipation process, the heat sink 222 absorbs heat and then dissipates the heat in the form of convection. During the convection heat dissipation process, the heat dissipation area is mainly determined by the surface area of ​​the heat sink 222. The larger the surface area, the better the heat dissipation effect; the smaller the surface area, the worse the heat dissipation effect.

[0062] In this embodiment, the heat sink 222 is in the shape of a rectangular sheet, the longer side of the heat sink 222 is connected to the heat sink base 221, the heat sink 222 and the heat sink base 221 are arranged perpendicular to each other, there are multiple heat sinks 222, and the multiple heat sinks 222 are evenly arranged on the heat sink base 221. Two adjacent heat sinks 222 are arranged in parallel, and the distance between any two adjacent heat sinks 222 is equal.

[0063] Furthermore, a rising guide portion can be provided on the same side of multiple heat sinks 222. The design of the rising guide portion can guide the air flow so that the hot air can rise and be discharged more smoothly, while driving more cold air into the heat dissipation area to form an effective convection cycle. In this way, the heat sink 222 can dissipate heat more efficiently and ensure that the temperature of the equipment is effectively controlled. Specifically, the heat sink 222 can be bent, and the bending angles and bending positions of the multiple heat sinks 222 are the same. The bent heat sinks 222 are evenly arranged on the heat dissipation base 221, and two adjacent heat sinks 222 are arranged in parallel, and the distance between any two adjacent heat sinks 222 is equal.

[0064] In this embodiment, the heat sink 222 and the heat sink base 221 are an integrally formed structure. To facilitate demoulding of the heat sink 22, a transition fillet is provided at the connection between the heat sink 222 and the heat sink base 221, and the distance between two adjacent heat sinks 222 should not be too close.

[0065] The protective cover 23 also includes a first connecting plate 234 and a second connecting plate 235 located between the top plate 232 and the bottom plate 233. The first connecting plate 234, the top plate 232, the second connecting plate 235 and the bottom plate 233 are connected in sequence and end to end to form a rectangular ring, and a side plate 231 is connected to one side of the rectangular ring.

[0066] In other embodiments, the first connecting plate 234, the top plate 232, the second connecting plate 235 and the bottom plate 233 may also be arranged slightly inclined, in which case the angles between the first connecting plate 234, the top plate 232, the second connecting plate 235 and the bottom plate 233 and the circuit board 21 are all acute angles. In this way, a slope can be formed inside the protective cover 23 to facilitate demoulding of the protective cover 23.

[0067] In this embodiment, there are multiple first heat dissipation holes 2321, each of which is rectangular in shape, and multiple first heat dissipation holes 2321 are evenly spaced and arranged on the top plate 232. Providing multiple first heat dissipation holes 2321 is conducive to controlling the size of each first heat dissipation hole 2321 while ensuring the heat dissipation effect, so as to avoid reducing the protective effect of the protective cover 23 due to the excessive size of the first heat dissipation hole 2321, so that external force can pass through the first heat dissipation hole 2321 and be applied to the internal circuit board 21 or the driving module 211, causing damage to the motor assembly.

[0068] Similarly, the number of second heat dissipation holes 2331 is multiple, the shape of the second heat dissipation holes 2331 is rectangular, and the multiple second heat dissipation holes 2331 are evenly spaced on the bottom plate 233. The number of first heat dissipation holes 2321 and second heat dissipation holes 2331 is the same, and the first heat dissipation holes 2321 and the second heat dissipation holes 2331 are arranged one by one.

[0069] In some embodiments, the main body 10 includes a base 11 and a welding pin 111, the welding pin 111 extends from the base 11, the circuit board 21 is formed with a welding hole 212, the circuit board 21 is set on the base 11, the welding pin 111 passes through the welding hole 212 and is welded on the circuit board 21 to electrically connect the circuit board 21 with the motor 100.

[0070] Thus, compared with the related art that uses a bundle of power lines to realize the electrical connection between the circuit board 21 and the motor 100, the use of the soldering pin 111 to realize the electrical connection between the circuit board 21 and the motor 100 is conducive to reducing costs. In addition, the plug-in welding connection between the soldering pin 111 and the circuit board 21 is conducive to making full use of space, and is conducive to increasing the assembly speed of the soldering pin 111 and the circuit board 21, which helps to achieve high-quality control and automated operation, thereby improving production efficiency. In addition, plug-in welding can make the connection between the circuit board 21 and the motor 100 easier and more convenient, and there is no need to remove the tin spray or lead paste and chemicals like conventional welding, thereby simplifying the disassembly and maintenance process.

[0071] Specifically, the motor 100 is a plastic-coated stator drive motor, and the motor 100 includes an output shaft and a plastic-coated layer 12, the output shaft extends from the plastic-coated layer 12, and a base 11 is provided on the side of the plastic-coated layer 12 away from the output shaft, and the base 11 and the plastic-coated layer 12 are an integrated structure formed by integral processing. Further, the base 11 and the plastic-coated layer 12 are injection-molded plastic materials, and the materials of the base 11 and the plastic-coated layer 12 are the same as the materials of the protective cover 23.

[0072] See also Figure 2 In other embodiments, the motor 100 may also be a common motor, the motor 100 includes an output shaft and a housing, the output shaft extends from the housing, a base 11 is provided on the side of the housing away from the output shaft, and the base 11 and the housing are an integral structure formed by integral processing. Further, the base 11 and the housing are injection molded of plastic material, and the material of the base 11 and the housing is the same as the material of the protective cover 23.

[0073] The welding needle 111 is a special needle used in welding, which is mainly used to guide the arc or current to the welding contact point so that the contact point melts and connects together. In this embodiment, the number of welding needles 111 is three. The three welding needles 111 are respectively connected to the power line, the ground line and the control line. The power line is responsible for providing a stable power supply to the motor 100 to ensure that the motor 100 can work normally. The ground line is used to ensure the safety of the motor 100 and prevent the occurrence of dangerous situations such as leakage and electric shock. The control line is used to control the start and stop and forward and reverse rotation of the motor 100 to achieve precise control of the motor 100. Correspondingly, the circuit board 21 is formed with three welding holes 212, and the welding needle 111 is connected to the welding hole 212 one-to-one by plug welding.

[0074] Secondly, the three welding pins 111 can improve the accuracy and efficiency of the motor 100 system. The three welding pins 111 ensure the stability and constancy of the power supply, so that the motor 100 can execute instructions more accurately and improve the overall work efficiency. At the same time, this design also helps to improve the anti-interference ability of the system and reduce errors and failures caused by signal interference.

[0075] In addition, the arrangement of the three welding pins 111 also facilitates the maintenance and diagnosis of the motor 100. When the motor 100 fails or needs to be debugged, the technician can quickly locate the problem by checking the status of the three welding pins 111 or welding points, thereby improving the efficiency of maintenance and diagnosis.

[0076] In some embodiments, the motor 100 includes a base 11, and the protective cover 23 includes a buckle 236 and a fastening hole 237. The protective cover 23 is buckled on the base 11 by the buckle 236 and fastened to the base 11 by a fastener passing through the fastening hole 237, thereby being installed on the base 11.

[0077] In this way, the base 11 and the protective cover 23 are detachably connected, which is convenient for maintenance and replacement of components inside the protective cover 23, and is conducive to saving the maintenance cost of the motor 100. At the same time, when the protective cover 23 is damaged, the detachable connection between the body and the protective cover 23 can also facilitate the maintenance and replacement of the protective cover 23.

[0078] Specifically, the protective cover 23 includes a mounting ring 238, which is mounted on a side of the top plate 232 and the bottom plate 233 away from the side, and the edges and corners of the mounting ring 238 are provided with transition fillets. Optionally, the number of the buckles 236 is one or more, and similarly, the number of the fastening holes 237 is one or more.

[0079] In this embodiment, there are two fastening holes 237, which are arranged at two corners on one side of the top plate 232. Correspondingly, two through holes 112 are arranged at two corners on the same side of the base 11. The fasteners pass through the fastening holes 237 and the through holes 112 in sequence and are fastened to realize the installation of one side of the protective cover 23.

[0080] There are two buckles 236, which are arranged at the edge of one side of the bottom plate 233, and the two buckles 236 are arranged at intervals. In order to strengthen the structural strength of the buckles 236, the protective cover 23 is also provided with reinforcing ribs 2361, which are arranged along the bottom plate 233 to the top of the buckles 236, and each buckle 236 is provided with two reinforcing ribs 2361, which are arranged at intervals. Both buckles 236 are buckled on the edge of the base 11 to achieve the installation of the other side of the protective cover 23.

[0081] In other embodiments, the buckle 236 and the fastening hole 237 may also be set at other positions. It is easy to understand that in order to facilitate the installation of the protective cover 23, the buckle 236 and the fastening hole 237 need to be respectively set at two opposite edges of the mounting ring 238.

[0082] See also Figure 4 In other embodiments, the protective cover 23 may only have fastening holes 237, for example, there are four fastening holes 237, which are respectively disposed at four corners of the mounting ring 238. The fastening holes 237 may also be other numbers, and the plurality of fastening holes 237 may be evenly disposed on the mounting ring 238.

[0083] In other embodiments, only buckles 236 may be provided on the protective cover 23 , and the number of buckles 236 is an even number, and every two large openings are provided on two opposite edges of the mounting ring 238 .

[0084] In certain embodiments, the fasteners include screws or rivets.

[0085] With such configuration, the screws or rivets are all low-cost standard parts that have been purchased, which is beneficial to reducing the production cost of the motor 100.

[0086] Specifically, screws and rivets are standard fasteners. It is easy to understand that the use of screws to connect the protective cover 23 and the base 11 can make the protective cover 23 easy to install and disassemble, and facilitate the maintenance and replacement of the components inside the protective cover 23. At the same time, the screws can be reused, which is conducive to saving production and maintenance costs. The use of rivets to connect the protective cover 23 and the base 11 can make the protective cover 23 more firmly connected.

[0087] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0088] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0089] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An electric control box assembly, the electric control box assembly is used for a motor, characterized in that: The electric control box assembly includes a circuit board, a radiator and a protective cover. The circuit board includes a driving module. The radiator is arranged on the circuit board and thermally coupled with the driving module. The protective cover covers the circuit board and has a heat dissipation opening corresponding to the radiator.

2. The electric control box assembly according to claim 1, characterized in that: The protective cover is a plastic protective cover.

3. The electric control box assembly according to claim 1, characterized in that: The protective cover comprises a side plate opposite to the circuit board, and the heat dissipation opening is formed on the side plate.

4. The electric control box assembly according to claim 3, characterized in that: The orthographic projection of the radiator on the side plate falls into the heat dissipation opening.

5. The electric control box assembly according to claim 3, characterized in that: The protective cover also includes a top plate and a bottom plate connected to the peripheral side of the side plate, the top plate is provided with a plurality of first heat dissipation holes corresponding to the radiator, the bottom plate is provided with a plurality of second heat dissipation holes corresponding to the radiator, the radiator includes a plurality of heat dissipation fins, the plurality of heat dissipation fins form a plurality of heat dissipation channels, the plurality of first heat dissipation holes, the plurality of heat dissipation channels and the plurality of second heat dissipation holes constitute a convection heat dissipation channel.

6. A motor, characterized in that: It comprises an electric control box assembly as described in any one of claims 1 to 5.

7. The motor according to claim 6, characterized in that The motor includes a base and a soldering pin, the soldering pin extends from the base, the circuit board is formed with a soldering hole, the circuit board is arranged on the base, the soldering pin passes through the soldering hole and is soldered on the circuit board to electrically connect the circuit board to the motor.

8. The motor according to claim 6, characterized in that The motor comprises a base, and the protective cover comprises a buckle and a fastening hole. The protective cover is buckled on the base by the buckle and fastened to the base after a fastener passes through the fastening hole, so as to be installed on the base.

9. The motor according to claim 8, characterized in that The fasteners include screws or rivets.

10. A washing machine, characterized in that: Comprising a motor as described in any one of claims 6-9.

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