Electric pump and method of manufacturing the same

Abstract

The present invention discloses an electric pump, the electric pump including a housing, a control panel unit located in the housing, the control panel unit including a substrate and an electronic element, the electronic element located in the housing, at least one electronic element including a pin and a first end facing the substrate, the pin of the electronic element being electrically connected to the substrate, the pin of the electronic element being electrically connected to the substrate, the first end being located on the same side as the pin of the electronic element, when the electric pump is operated, a working medium is present in the housing, the electronic element and the substrate are in contact with the working medium, a portion where the substrate and the electronic element are engaged relative to each other is defined as an engagement portion, the control panel unit is provided with a seal portion at the engagement portion, or the control panel unit is provided with a seal portion outside the engagement portion, thereby preventing the working medium from entering the portion where the first end of the electronic element is located, thereby protecting the electronic element and improving the life of the electric pump.

Description

[Technical field]

[0001] This application claims priority to two Chinese patent applications: a Chinese patent application filed with the China Patent Office on February 25, 2022, bearing application number 202210179037.X and entitled "Electric pump and method for manufacturing same", and a Chinese patent application filed with the China Patent Office on February 25, 2022, bearing application number 202210179036.5 and entitled "Control panel unit, method for manufacturing same, and electric pump", the entire contents of which are incorporated into this application by reference. The present invention relates to the field of vehicles, and in particular to components of vehicle lubrication and / or cooling systems. [Background technology]

[0002] Electric pumps provide a power source for the vehicle's lubrication and / or cooling systems and include a control panel unit whose electronic components are subject to exposure to corrosive media over extended periods of time, causing the electronic components to fail. Therefore, how to effectively prevent electronic elements from failing in a corrosive environment is a technical problem. Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present invention is to provide an electric pump and a method for manufacturing an electric pump that contribute to reducing failure of electronic elements. [Means for solving the problem]

[0004] In order to achieve the above object, the present invention provides an electric pump including an electrically connected stator unit and a control panel unit, the electric pump including an accommodation chamber, the control panel unit being located in the accommodation chamber, and the control panel unit including a substrate and an electronic element. When the electric pump is operating, a working medium is present in the accommodating chamber, the electronic element and the board are in contact with the working medium, at least one of the electronic elements includes a pin and a first end facing the board, the first end is on the same side as the pin of the electronic element, the pin of the electronic element is electrically connected to the board, the portion where the board and the electronic element engage relative to each other is defined as an engagement portion, and the control panel unit has a sealing portion installed in the engagement portion, or the control panel unit has a sealing portion installed outside the engagement portion, thereby preventing the working medium from entering the portion where the first end of the electronic element is located.

[0005] In the present invention, at least one electronic element includes a pin and a first end facing the substrate, the first end being on the same side as the pin of the electronic element, the pin of the electronic element being electrically connected to the substrate, a portion where the substrate and the electronic element engage relative to each other is defined as an engagement portion, and the control panel unit has a sealing portion provided at the engagement portion, or the control panel unit has a sealing portion provided outside the engagement portion. This prevents the working medium from entering the area where the first end of the electronic element is located. This embodiment contributes to reducing the working medium from entering the inside of the electronic elements, thereby protecting the electronic elements and reducing failure of the electronic elements, thereby improving the service life of the electric pump.

[0006] Another aspect of the present invention further provides a method for manufacturing an electric pump, comprising the steps of applying a first sealing material to the circumferential outside of the engagement portion; hardening the first sealing material, oil-sealing and connecting the first sealing material to the surface of the substrate and oil-sealing and connecting the first sealing material to the outer circumferential side of the outer wall surface of the first end portion; assembling a control panel unit and a stator unit, and placing a unit formed by the control panel unit and the stator unit in a housing chamber of the electric pump, or placing the stator unit in a housing chamber of the electric pump and assembling the control panel unit in the housing chamber of the electric pump and electrically connecting the control panel unit and the stator unit; and assembling a first rotor unit in the housing chamber of the electric pump, and communicating a portion where the first rotor unit is located with a portion where the control panel unit is located. This simplifies the process for implementing the sealing portion, which contributes to mass production.

[0007] A third aspect of the present invention further provides a method for manufacturing an electric pump, comprising the steps of applying a first sealing material within an engagement portion; hardening the first sealing material, oil-sealing and connecting the first sealing material to a surface of the substrate and oil-sealing and connecting the first sealing material to an end face of a first end portion; assembling a control panel unit and a stator unit, and placing a unit formed by the control panel unit and the stator unit in an accommodating chamber of the electric pump, or placing the stator unit in an accommodating chamber of the electric pump and assembling the control panel unit in the accommodating chamber of the electric pump and electrically connecting the control panel unit and the stator unit; and assembling a first rotor unit in the accommodating chamber of the electric pump, and communicating a portion where the first rotor unit is located with a portion where the control panel unit is located. This reduces the area occupied by the sealing portion on the substrate, freeing up a certain amount of space for arranging electronic elements, and contributing to the design of a more compact control panel unit. [Brief description of the drawings]

[0008] [Figure 1] 1 is a cross-sectional view of an electric pump according to a first embodiment of the present invention. [Diagram 2] 1 is a diagram of a first fluid path in an electric pump according to a first embodiment of the present invention; [Diagram 3] FIG. 4 is a cross-sectional view of an electric pump according to another embodiment of the present invention. [Figure 4] FIG. 4 is a three-dimensional view of the control panel unit in FIG. 1 and FIG. 3 in one view. [Diagram 5] FIG. 4 is a three-dimensional view of the control panel unit in FIGS. 1 and 3 in another perspective; [Figure 6] FIG. 4 is a diagram of a first embodiment of the control panel unit in FIGS. 1 and 3; [Figure 7] 7 is a cross-sectional view of the control panel unit in the direction AA in FIG. 6. [Figure 8] FIG. 4 is a diagram of another embodiment of the control panel unit in FIGS. 1 and 3; [Figure 9] 9 is a cross-sectional view of the control panel unit in FIG. 8 taken along the line BB. [Figure 10] FIG. 4 is a view of a third embodiment of the control panel unit in FIGS. 1 and 3; [Figure 11] FIG. 4 is a view of a fourth embodiment of the control panel unit in FIGS. [Figure 12] FIG. 5 is a diagram of a fifth embodiment of the control panel unit in FIGS. [Figure 13] FIG. 11 is a diagram of a sixth embodiment of the control panel unit in FIGS. [Figure 14] An enlarged view of area C in Figure 6. [Figure 15] FIG. 9 is an enlarged view of area D in FIG. [Figure 16] FIG. 7 is a diagram of a seventh embodiment of the control panel unit in FIGS. [Figure 17] FIG. 13 is a diagram of an eighth embodiment of the control panel unit in FIGS. [Figure 18]FIG. 9 is a diagram of a ninth embodiment of the control panel unit in FIGS. 1 and 3; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will now be further described with reference to the following figures and examples.

[0010] Hereinafter, the embodiments of the present invention will be described in more detail with reference to the drawings. First, directional terms such as up, down, left, right, front, rear, inside, outside, top, bottom, etc. mentioned or referable in the specification of the present invention are defined with respect to the structures shown in the corresponding drawings and are relative concepts, and therefore may change accordingly depending on different positions and different usage conditions in which they are located. Thus, these or other directional terms are not to be construed as limiting terms.

[0011] The electric pump in the following embodiments provides flow power for the working medium of a vehicle stem and lubrication and / or cooling system, specifically, can provide flow power for the working medium of a lubrication system and / or cooling system in a vehicle transmission system.

[0012] The electric pump 100 shown in FIGS. 1 to 18 includes a pump housing, a first rotor unit 11, a second rotor unit 12, a stator unit 13, and a control panel unit 14. The first rotor unit 11 is transmission-connected to the second rotor unit 12, and the stator unit 13 is electrically connected to the control panel unit . The stator unit 13 includes a stator core, an insulating holder, and a winding. The insulating holder covers at least a portion of the surface of the stator core, and the winding is wound around the insulating holder. Here, the control panel unit 14 may have a function of supplying power to the coil of the stator unit 13, and may have a function of controlling the operation of the first rotor unit 11 in real time according to the operating environment. The electric pump 100 further includes a first accommodating chamber 16, a second accommodating chamber 17, a third accommodating chamber 15 and a communicating portion 22, the first rotor unit 11 is provided in the third accommodating chamber 15, and the pump housing has an accommodating chamber 231, specifically, the pump housing includes a first housing and a second housing, which are sealed and fixedly connected to form the accommodating chamber. The control panel unit 14 is located within the accommodating chamber, one side of the control panel unit 14 is a first accommodating chamber 16, the stator unit 13 is located within the first accommodating chamber 16, and the other side of the control panel unit 14 is a second accommodating chamber 17, the first accommodating chamber 16 and the second accommodating chamber 17 are connected at least via a connecting portion 22, and the control panel unit 14 includes a substrate 142, an electronic element 141, and a sealing portion. The substrate 142 includes a first surface 1421 and a second surface 1422, and along the axial direction of the electric pump 100, the first surface 1421 is closer to the stator unit 13 than the second surface 1422, and at least some of the electronic elements 141 are on the same side as the first surface 1421, or at least some of the electronic elements 141 are on the same side as the second surface 1422, and the electronic elements 141 on the same side as the first surface 1421 are defined as the first electronic elements, and the electronic elements 141 on the same side as the second surface 1422 are defined as the second electronic elements, and the wall surface corresponding to the first storage chamber 16 includes at least the outer wall surface of the first electronic element, or the wall surface corresponding to the second storage chamber 17 includes at least the outer wall surface of the second electronic element. When the electric pump 100 is operating, the working medium flows into the first storage chamber 16 and the second storage chamber 17, and when the working medium flows into the first storage chamber 16, the first electronic element comes into contact with the working medium in the first storage chamber, and when the working medium flows into the second storage chamber 17, the second electronic element comes into contact with the working medium in the second storage chamber 17. At least one of the electronic elements 141 includes a pin and a first end facing the substrate 142 ; specifically, the electronic element 141 includes a housing 1411 . The housing 1411 includes a first end 1413, which includes one end of the housing 1411 on the same side as the pin of the electronic element 141, the first end 1413 being on the same side as the pin of the electronic element 141, and the portion where the board 142 and the electronic element 141 engage relative to each other is defined as an engagement portion 24, and the control panel unit 14 has a sealing portion 143 installed in the engagement portion 24, or the control panel unit 14 has a sealing portion 143 installed outside the engagement portion 24, thereby preventing the working medium from entering the portion where the first end of the electronic element 141 is located. The working medium referred to below includes, but is not limited to, oil, and also includes other working media that may be present in the containment chamber and in contact with the electronic element 141. The pins of the electronic element 141 are electrically connected to the substrate 142, the sealing portion 143 is on the same side as the first end 1413, the sealing portion 143 includes a blocking surface 1435, the control panel unit 14 includes a sealing chamber 146, and the wall surface corresponding to the sealing chamber 146 includes at least the blocking surface 1435, the surface of the substrate 142, and the inner wall surface of the housing 1411, or the electronic element 141 includes a sealing rubber pad 1412, the sealing portion 143 includes a main body portion 1436, the outer portion 1437 is the outer peripheral wall surface of the main body portion 1436, the outer portion 1437 is sealed and connected to the inner wall surface of the first end 1413 in the circumferential direction, and the main body portion 1436 covers the surface of the sealing rubber pad 1412. The main body portion 1436 covering the sealing rubber pad 1412 may be in a contacting or non-contacting arrangement, and the main body portion 1436 and the sealing rubber pad 1412 are projected onto the first surface of the substrate 142 along the axial direction of the electric pump 100, and the projection of the sealing rubber pad 1412 is located within the projection of the main body portion 1436. When the electric pump 100 is operating, the control panel unit 14 controls the stator unit 13 to generate a changing excitation magnetic field by controlling the current in the windings of the stator unit 13 to change according to a predetermined discipline, and the second rotor unit 12 rotates due to the action of the excitation magnetic field. This second rotor unit 12 can directly or indirectly rotate the first rotor unit 11. When the first rotor unit 11 rotates, the volume of the hydraulic chamber between the first rotor unit 11 changes, pushing the working medium into the outflow passage and generating a flow force. The first storage chamber 16 and the second storage chamber 17 are capable of storing a working medium. When the working medium flows through the first storage chamber 16 and the second storage chamber 17, at least some of the electronic elements 141 come into contact with the working medium in the first storage chamber 16 and the second storage chamber 17 and exchange heat. If the electronic elements 141 come into contact with the working medium for a long period of time, it is likely to cause the electronic elements 141 to fail, which will affect the lifespan of the control panel unit 14 and the service lifespan of the electric pump 100. This embodiment contributes to reducing the intrusion of the external working medium into the electronic element 141, protecting the electronic element 141, reducing failure of the electronic element, and improving the service life of the electric pump 100.

[0013] The electric pump 100 shown in Figures 1 and 2 further includes a third accommodating chamber 15, the first rotor unit 11 is located in the third accommodating chamber 15, and the wall surface corresponding to this third accommodating chamber 15 includes a bottom wall 151, which is used to support the first rotor unit 11. The electric pump 100 further includes a first passage 152 that passes through the upper and lower surfaces of the bottom wall 151, and the third housing chamber 15 communicates with the first housing chamber 16. When the electric pump 100 is operating, the working medium in the third storage chamber 15 enters the first storage chamber 16 through the first passage 152, and the first storage chamber 16 and the second storage chamber 17 are connected at least through the connecting portion 22, and the working medium in the first storage chamber 16 enters the second storage chamber 17 through the connecting portion 22. In this way, the electronic element 141 located in the first storage chamber 16, i.e., the first electronic element, can exchange heat with the working medium in the first storage chamber 16, and the electronic element 141 located in the second storage chamber 17, i.e., the second electronic element, can exchange heat with the working medium in the second storage chamber 17. The heat of the control panel unit 14 can be effectively dissipated, the service life of the control panel unit 14 can be improved, and the service life of the electric pump 100 can be improved. As shown in FIG. 1, the electric pump 100 further includes a pump shaft 18, one end of which is connected to the first rotor unit 11 and the other end of which is connected to the second rotor unit 12, and the pump shaft 18 includes a second passage 181. The second passage 181 penetrates the pump shaft 18 along the axial direction of the pump shaft 18, with one end of the second passage 181 communicating with the third housing chamber 15 and the other end of the second passage 181 communicating with the first housing chamber 16. When the electric pump 100 is operating, the pressure of the working medium at the inlet of the first passage 152 is greater than the pressure of the working medium at the outlet of the second passage 181, allowing the working medium to exit the first chamber 16 through the second passage 181. A fluid flow path consisting of the first passage 152 and the second passage 181 is defined as a first flow path S1, and is specifically shown in FIG.

[0014] As shown in Figures 2 and 3, the electric pump 100 further includes an inlet passage 19 and an outlet passage 20, where the inlet passage 19 is used for the inflow of an external working medium and the outlet passage 20 is used for the outflow of the working medium. The electric pump 100 further includes a third passage 21, and the wall portion corresponding to the third storage chamber 15 includes a side wall 153, which is located radially outside the bottom wall 151. The third passage 21 penetrates the side wall 153, and one end of the third passage 21 is connected to the first storage chamber 16 and the other end of the third passage 21 is connected to the outflow passage 20. The pressure of the working medium at the inlet of the first passage 152 is greater than the pressure of the working medium at the outlet of the third passage 21, and the working medium in the first storage chamber 16 is able to exit the first storage chamber 16 through the third passage 21. In this manner, the control panel unit 14 can effectively dissipate heat. A fluid flow path consisting of the inflow passage 19 and the outflow passage 20 is defined as a second flow path S2, and a fluid flow path consisting of the first passage 152 and the third passage 21 is defined as a third flow path S3, which are specifically shown in FIG. In order to accommodate the heat dissipation requirements of the control panel unit 14 of electric pumps of different powers, for a high-power electric pump 100, the first flow path S1 and the third flow path S3 can be installed simultaneously, as shown in Figures 2 and 3.

[0015] As shown in FIG. 1, when the electric pump 100 is operating, the working medium can enter the first storage chamber 16 through the first passage 152, and the first storage chamber 16 is connected to the second storage chamber 17 at least via the communication portion 22. Specifically, there is a uniform gap between the outer wall of the base plate 142 and the inner wall of the pump housing. Furthermore, there may be gaps between the outer wall of the base plate 142 and the inner wall of the pump housing at both positions that are symmetrical in the circumferential direction at least along the axis of the base plate 142, and no specific limitations are imposed here. The communication portion 22 is a passage formed between the outer wall of the base plate 142 and the inner wall of the pump housing. This embodiment can conserve the limited space required for arranging the substrate 142, simplify the structure of the control panel unit 14, reduce the cost of the control panel unit 14, and contribute to reducing the cost of the electric pump 100. Furthermore, the communication portion 22 may be installed on the substrate 142, and the communication portion 22 may include a communication hole that penetrates the substrate 142, thereby connecting the first storage chamber 16 to the second storage chamber 17, and when the electric pump 100 is operated, the working medium in the first storage chamber 16 can enter the second storage chamber 17 through the communication hole, the electronic element 141 located in the first storage chamber 16 may be understood as a first electronic element, and the electronic element 141 located in the second storage chamber 17 may be understood as a second electronic element, and the first electronic element and / or the second electronic element exchange heat with the working medium and contribute to heat dissipation of the control panel unit 14. According to this embodiment, it is not necessary to adjust the radial dimension of the pump housing, the structural volume of the electric pump 100 is reduced, and the structure of the electric pump 100 can be made more compact.

[0016] The sealing portion of the control panel unit 14 installed outside the engagement portion is defined as the first sealing portion, and the control panel unit prevents the working medium from entering the area where the first end of the electronic element 141 is located by installing a second sealing portion at the engagement portion. The materials used for the first sealing portion and the second sealing portion may be the same or different. For example, the first sealing portion and / or the second sealing portion may be formed by using a first sealing material and curing it, or the first sealing portion and / or the second sealing portion may be formed by using a second sealing material and curing it. In the following examples, the first sealing material and the second sealing material simultaneously comprise a first sealant, and in other embodiments, the first sealing material and / or the second sealing material comprises a second sealant. As described above, when the electric pump 100 is operating as shown in Figures 1 to 5, the electronic element 141 located in the first storage chamber 16, which may be understood as the first electronic element, and the electronic element 141 located in the second storage chamber 17, which may be understood as the second electronic element, are in contact with the working medium for a long period of time, which is likely to cause the electronic element 141 to fail. The electronic elements 141 include resistors, capacitors, inductors, processors, etc., and the capacitors include electrolytic capacitors, hybrid capacitors, or solid capacitors. In the following, only the electrolytic capacitor will be described in detail as an example, and the electrolytic capacitor may be on the same side as the first surface 1421, or the electrolytic capacitor may be on the same side as the second surface 1422, and the top surface of the substrate 142 below may be either the first surface 1421 or the second surface 1422.

[0017] As shown in Figures 6, 14 and 7, the sealing portion 143 includes a bottom portion 1432 and a side portion 1431, the first end portion 1413 includes one end relatively close to the substrate 142 of the housing, the engagement portion 24 includes a portion where the substrate 142 and the housing 1411 engage relative to each other, the blocking surface 1435 is located on the side portion 1431, and at least a portion of the side portion 1431 is sealingly connected to the outer wall of the first end portion 1413, specifically, at least a portion of the side portion 1431 is sealingly connected to the outer wall of the first end portion 1413 in the circumferential direction, and as can be understood, the side portion 1431 is oil-sealed and connected to the outside of the outer wall surface of the first end portion 1413, and the bottom portion 1432 is sealingly connected to the substrate 142, and the bottom portion 1432 is oil-sealed and connected to the surface of the substrate 142. Specifically, the side 1431 includes a first segment 1431a and a second segment 1431b, and the first segment 1431a, the first end 1413, may be understood to be circumferentially sealed to the outer wall of the housing, the blocking surface 1435 is located on the second segment 1431a, and the bottom 1432 is sealingly connected to the substrate 142. The side wall corresponding to the sealing chamber 146 includes at least the inner wall surface of the housing 1411, the blocking surface 1435, and at least a portion of the surface of the substrate 142, which may be understood here as the upper surface of the substrate 142, as shown in FIG. 6, and the sealing chamber 146 is constructed and formed by the upper surface of the substrate 142, the sealing portion 143, and the case of the electronic element 141, thereby reducing the working medium from entering the inside of the electronic element 141, and in this way, the amount of the first sealing material required is reduced, specifically, the first sealing material may be a first sealant, and the amount of the first sealant required is reduced, saving the amount of the first sealant used, and further reducing the cost of the control panel unit 14. The electronic element 141 further includes a sealing rubber pad 1412, which is located within the sealing chamber 146 and is sealed and connected to the open end opening in a circumferential direction, and the sealing rubber pad 1412 is used to seal the electrolyte in the electrolytic capacitor. After the electronic element 141 is fixedly connected to the substrate 142, it is usually located on the end surface of the electronic element 141, and the end surface of the first end and the upper surface of the substrate 142 form a first gap L1 (shown in FIG. 14). The height dimension of the electronic element 141 is defined as H, and the height dimension of the electronic element 141 here is the height dimension along the axial direction of the electric pump 100. Along the height direction of the electronic element 141, the height direction of the electronic element 141 here may be understood to be parallel to the axial direction of the electric pump 100. The thickness dimensions of the upper and lower surfaces of the sealing portion 143 are larger than the dimension of the first gap and are 0.25H or less. When the external working medium contacts the rubber pad, ie, the sealing rubber pad 1412, for a long time, the sealant 1412 expands and deforms, pushing up the electrolytic capacitor, causing it to fall out and become ineffective. The sealing material includes a first sealant, the first sealant having a viscosity parameter of 20000 mPa.s or more at room temperature, and the first sealant being in a jelly state before curing. The normal temperature below is 25°C ± 3°C. The first sealant does not flow freely at the applied location prior to curing. The first sealant after curing, i.e., the sealing portion, has good compatibility with oil and can maintain good sealing performance in the working medium environment for a long period of time. Specifically, the application manner of the first sealant includes, but is not limited to, painting, and other manners of applying the sealant are also possible, and are not specifically limited herein. As an implementation manner, specifically, the first sealant can be applied, and the process of applying the first sealant can be spray application, coating, or painting, and are not specifically limited herein. In this embodiment, the first sealant is cured by UV at room temperature, or by high temperature, and may be cured in other manners, which are not specifically limited here. After hardening, the inner wall surface of the housing 1411, at least a portion of the side portion 1431, and at least a portion of the upper surface of the substrate 142 form a sealed chamber, and the sealing rubber pad 1412 of the electrolytic capacitor is installed in the sealed chamber 146, which effectively prevents a corrosive working medium, such as gear oil, from passing through the clearance between the electronic element 141 and the substrate 142 to enter the inside of the electronic element 141, such as the inside of the electrolytic capacitor, and coming into contact with the sealing rubber pad 1412 of the electrolytic capacitor, thereby improving the service life of the sealing rubber pad 1412 and improving the service life of the electric pump 100. According to this aspect, firstly, the sealing chamber 146 formed by the sealing portion 143, the substrate 142, and the housing 1411 can effectively protect the sealing rubber pad 1412, improve the service life of the sealing rubber pad 1412, contribute to protecting the electronic element 141, contribute to reducing the risk of the electronic element 141 becoming unusable, and further improve the service life of the electronic element 141. Secondly, the process of the sealing portion 143 is simple, which is conducive to mass production and effectively improves the production efficiency of the control panel unit 14 . Thirdly, the sealing portion 143 is installed outside the electronic element 141. When the sealing portion 143 is installed, the blocking state of the clearance between the electronic element 141 and the substrate 142 by the sealing portion 143 can be more intuitively observed, which contributes to controlling the appearance quality of the sealing portion 143 and contributes to realizing a high-quality sealing effect. Fourth, the sealing portion 143 is installed on the outer peripheral side of the electronic element 141, occupies less space on the board 142, saves the limited arrangement space for other electronic elements 141, reduces the radial dimension of the board 142, saves the cost of the control panel unit 14, and at the same time provides a certain basis for miniaturization of the electric pump 100. Fifth, the thickness dimensions of the upper and lower surfaces of the sealing portion 143 are greater than the dimension of the first gap L1 and are 0.25H or less, which effectively seals the electronic element 141 and enables the electronic element 141 to more effectively perform sufficient heat exchange with the working medium, contributing to sufficient heat dissipation from the electronic element 141 and improving the service life of the electric pump 100. Furthermore, as shown in FIG. 10, the control panel unit further includes a cover portion 145 , which includes a main body portion 1451 and an outer periphery portion 1452 . The outer peripheral portion 1452 is the outer peripheral side wall surface of the main body portion 1451, and the outer peripheral portion 1452 is sealed and connected to the inner wall surface of the first end portion 1413 in the circumferential direction, the electronic element 141 includes a sealing rubber pad 1412, and the sealing rubber pad 1412 is sealed and connected to the inner wall of the first end portion 1413 in the circumferential direction, the sealing rubber pad 1412 includes a front surface 1412a and a back surface 1412b, and along the axial direction of the electric pump 100, the front surface 1412a is closer to the substrate 142 than the back surface 1412b, the main body portion 1451 is in contact with and covers the front surface 1412a, the main body portion 1451 and the front surface 1412a are projected onto a plane on which the front surface 1412a is located, and the projected area of ​​the main body portion 1451 is greater than or equal to the projected area of ​​the front surface 1412a. For the covering portion 145 mentioned below, a third sealing material is used, which may be the same as the first sealing material or the second sealing material, and the third sealing material includes a second sealant, and the covering portion 145 is formed by hardening the second sealant, and the covering portion 145 is formed after hardening the second sealant, and at room temperature, the viscosity parameter of the second sealant is 200 mPa.s or more. In the case of hardening molding, the covering portion 145 can enclose the liquid UV resin or UV adhesive within the housing 1411 by using the inner surface of the housing 1411 as a dam, and since the fluidity of the liquid UV resin or UV adhesive is relatively good, it can flow sufficiently into the clearance between the sealing rubber pad 1412 and the inner wall of the housing 1411, and by using the inner surface of the housing 1411 as a cofferdam, a covering portion 145 of a certain thickness can be formed, and the covering portion 145 can be hardened by UV or at high temperature. According to this embodiment, the second sealant has relatively good fluidity and can flow sufficiently into the clearance between the sealing rubber pad 1412 and the housing 1411, thereby protecting the electronic element and effectively reducing corrosion of the electronic element 141 caused by the working medium, for example, corrosion of the sealing rubber pad 1412 of the electronic element 141 caused by the working medium, and effectively reducing the risk of the electronic element 141 failing.

[0018] As shown in Figures 8, 9 and 15, the electronic element 141 includes an electrolytic capacitor, and in order to adapt to electric pumps 100 of different powers, the volume of the electrolytic capacitor that is usually placed in a high-power electric pump 100 is large, and in order to reinforce the strength of the connection between the electrolytic capacitor and the substrate 142, the electronic element 141 further includes a base 144. The base 144 has a positioning hole 1443 formed therein, the positioning hole 1443 extending along the thickness direction of the base 144, the first end 1413 being located in the positioning hole 1443, the base 144 including a first surface 1441 and a second surface 1442, the second surface 1442 being spaced away from the substrate 142 relative to the first surface 1441 along the axial direction of the electric pump 100, the base 144 being fixedly connected to the substrate 142, the first end 1413 including one end of the base 144 relatively close to the substrate 142 and one end of the housing 1411 relatively close to the substrate 142, the engagement portion 24 including a portion where the base 144 and the substrate 142 engage relative to each other, the engagement portion 24 including a portion where the housing 1411 and the substrate 142 engage relative to each other, and the outer wall of the electronic element 141 is connected to the wall that forms the positioning hole 1443 and is restricted in position. Here, being connected with a positional restriction may mean being connected with a clearance fit, being connected with an intermediate fit, or being connected with an interference fit, and there is no specific limitation here. In this embodiment, the outer wall of the electronic element 141 is gap-fitted into the wall surface forming the positioning hole, and the electronic element 141 is fixedly connected to the substrate 142 via the base 144. The electronic element 141 and the base 144 are projected onto a plane on which the upper surface of the base 144 is located, and the projected area of ​​the electronic element 141 is smaller than the projected area of ​​the base 144. The upper surface of base 144 is second surface 1442. In this way, the contact area of ​​base 144 with substrate 142 is larger than the contact area between the end of electronic element 141 and substrate 142, and installing base 144 further contributes to the stability of the connection between the electrolytic capacitor and substrate 142. In this way, a second gap is formed between the outer wall of the electronic element 141 and the side wall of the positioning hole 1443, and a third gap is formed between the lower surface of the base 144, i.e., the first surface 1441, and the upper surface of the substrate 142. In order to achieve blocking of the second and third gaps, it is possible to prevent the working medium from entering the inside of the electronic element 141, for example, the inside of the electrolytic capacitor along the second and third gaps and corroding the sealing rubber pad 1412 of the electrolytic capacitor. As shown in Figures 8 and 15, the sealing portion 143 includes a first portion 1433 and a second portion 1434, the first portion 1433 includes a first contact portion 1433a and a second contact portion 1433b, and the second portion 1434 includes a second joining portion 1434b and a first joining portion 1434a. The second contact portion 1433b is sealed and connected to the outer wall of the first end portion 1413a in the circumferential direction, specifically, the second contact portion 1433b is connected to the outer periphery of the outer wall surface of the housing 1411 with an oil seal, and the first contact portion 1433a is sealed and connected to the second surface 1442, specifically, the first contact portion 1433a is connected to the second surface 1442 with an oil seal, and at least a part of the second joint portion 1434b is sealed and connected to the peripheral side wall of the base 144 in the circumferential direction, and the first joint portion 1434a is connected to the substrate 142 with an oil seal. Specifically, the first joint portion 1434a is oil-sealed and connected to the surface of the substrate 142, and the blocking surface 1435 includes a first blocking surface 1435a and a second blocking surface 1435b, the first blocking surface 1435a is located at the first contact portion 1433a, the second blocking surface is located at the second joint portion 1434b, and the wall surface corresponding to the sealed chamber 146 includes the inner wall surface of the housing 1411, the first blocking surface 1435a and at least a portion of the first surface 1442, and the second blocking surface 1435b and at least a portion of the surface of the substrate 142. Along the axial direction of the electric pump 100, the thickness dimension of the first portion 1433 is equal to or smaller than 0.25H, and the thickness of the second portion 1434 is equal to or smaller than the thickness dimension of the base 144. In this manner, the second gap and the third clearance can be effectively blocked, preventing the working medium from entering the inside of the electronic element 141, for example, the inside of the electrolytic capacitor, and corroding the sealing rubber pad 1412 of the electrolytic capacitor. The sealing portion 143 may be a first sealant, which is UV cured or high temperature cured. The viscosity parameter of the first sealant is greater than or equal to 20000 mPa.s. According to this embodiment, firstly, the amount of the first sealant required is small, the amount of the first sealant used is saved, and the cost of the control panel unit 14 can be reduced. Secondly, by installing the first part 1433 and the second part 1434, in this embodiment, the contact area between the sealing part 143, the electronic element 141, and the substrate 142 is small, which ensures sealing, while allowing the electronic element 141 to more effectively exchange heat with the working medium sufficiently, thereby enabling the electronic element 141 to dissipate heat sufficiently and provide a long service life for the control panel unit 14. The first section 1433 and the second section 1434 may be fixedly connected. Furthermore, the control panel unit 14 shown in Figures 8, 15, 9, and 13 further includes a cover portion 145, which includes a main body portion 1451, and an outer circumferential portion 1452 is an outer circumferential side wall surface of the main body portion 1451, and the outer circumferential portion 1452 is sealed and connected to the inner wall surface of the first end portion 1413 in the circumferential direction. The electronic element 141 includes a sealing rubber pad 1412 that is sealed and connected to the inner wall of the first end 1413 in a circumferential direction, the sealing rubber pad 1412 includes a front surface 1412a and a back surface 1412b, the front surface 1412a is closer to the substrate 142 than the back surface 1412b along the axial direction of the electric pump 100, the main body portion 1451 contacts and covers the front surface 1412a, the main body portion 1451 and the front surface 1412a are projected onto a plane on which the front surface 1412a is located, and the projected area of ​​the main body portion 1451 is greater than or equal to the projected area of ​​the front surface. The cover portion 145 is formed by curing the second sealant, and the viscosity parameter of the second sealant at room temperature is 200 mPa.s or more. In the case of hardening molding, the covering portion 145 can be formed by enclosing liquid UV resin or UV adhesive within the housing 1411 using the inner surface of the housing 1411 as a dam, and since the fluidity of the liquid UV resin or UV adhesive is relatively good, it can flow sufficiently into the clearance between the sealing rubber pad 1412 and the inner wall of the housing 1411, and by using the inner surface of the housing 1411 as a cofferdam, a covering portion 145 of a certain thickness can be formed, and the covering portion 145 can be hardened by UV or at high temperature. According to this embodiment, the fluidity of the second sealant is relatively good, and it can flow sufficiently into the clearance between the sealing rubber pad 1412 and the housing 1411, and furthermore, it can protect the electronic element 141 and effectively reduce corrosion of the electronic element 141 caused by the working medium, for example, corrosion of the sealing rubber pad 1412 of the electronic element 141 caused by the working medium, and effectively reduce the risk of the electronic element 141 failing.

[0019] Hereinafter, another embodiment will be described as shown in FIG. 10 , in which the electronic element 141 further includes a sealing rubber pad 1412 that is sealingly connected to the inner wall of the first end in a circumferential direction, the sealing rubber pad 1412 includes a front surface 1412a and a back surface 1412b, and along the axial direction of the electric pump 100, the front surface 1412a is closer to the substrate 142 than the back surface 1412b, and the sealing portion 143 includes a main body portion 1436 and an outer portion 1437. This outer portion 1437 is the circumferential side wall surface of the main body portion 1436, the outer portion 1437 is sealed connected to the inner wall surface of the first end portion 1413 in the circumferential direction, the main body portion 1436 contacts and covers the front surface 1412a, the main body portion 1436 and the front surface 1412a are projected onto the plane in which the front surface 1412a is located, the projected area of ​​the main body portion 1436 is greater than or equal to the projected area of ​​the front surface 1412a, and the main body portion 1436 includes an inner surface and an outer surface. Furthermore, the outer surface is closer to the substrate 142 than the outer surface, the blocking surface 1435 is located on the inner surface, and the wall surface corresponding to the sealed chamber 143 includes the inner wall surface of the housing 1411 and the blocking surface 1435. Here, the sealing portion 143 may be formed by hardening the first sealing material, the second sealing material, or the third sealing material. The sealant may be a first sealant or a second sealant, and the second sealant has a viscosity parameter of 200 mPa.s or more at room temperature. At room temperature, the viscosity parameter of the second sealant is less than or equal to the viscosity parameter of the first sealant. In this embodiment, the sealant is a second sealant, which has relatively good fluidity and can flow sufficiently into the clearance between the sealing rubber pad 1412 and the housing 1411, and form a sealing portion 143 after curing to isolate the sealing rubber pad 1412 from the working medium, effectively preventing the external working medium from entering the inside of the electronic element 141, and effectively protecting the sealing rubber pad 1412 in the electronic element 141. In addition, the double protection of the sealing part and the sealing rubber pad 1412 can effectively prevent the external working medium from entering the inside of the electronic element 141, improve the service life of the electronic element 141, and further improve the service life of the electric pump 100. The second sealant may be a UV resin or a UV adhesive, which is cured by UV or cured by high temperature. In this embodiment, the sealing portion 143 is formed by spraying a UV adhesive onto the surface of the sealing rubber pad 1412 , and the sealing rubber pad 1412 is completely covered by the sealing portion 143 . In the case of hardening molding, this sealing portion 143 can enclose liquid UV resin or UV adhesive within the housing 1411, using the inner surface of the housing 1411 as a dam, and since the fluidity of the liquid UV resin or UV adhesive is relatively good, it can flow sufficiently into the clearance between the sealing rubber pad 1412 and the inner wall of the housing 1411, and using the inner surface of the housing 1411 as a cofferdam, a sealing portion 143 of a certain thickness can be formed, and the sealing portion 143 can be hardened by UV or at high temperature. According to this embodiment, when the electrolytic capacitor is located in the working medium, direct contact between the working medium and the sealing rubber pad 1412 can be effectively avoided, and the sealing rubber pad 1412 can be effectively prevented from being deformed due to long-term contact with the working medium, which can cause the electrolytic capacitor to fail. By placing the sealing portion 143 inside the dielectric capacitor, the arrangement space on the surface of the substrate 142 can be more effectively saved, and a basis can be provided for designing a miniaturized structure of the electric pump 100 .

[0020] As another embodiment, as shown in FIG. 11, based on the installation of the sealing part 143, the surface of the electronic element 141 may be further treated. Specifically, the surface of the electronic element 141 is covered with a protective film 146, which may be a conformal coating or a second sealant, and the viscosity parameter of the second sealant at room temperature is 200 mPa.s or more. In this embodiment, the protective film is a conformal coating, which can be uniformly sprayed onto the surface of the electronic element 141. The conformal coating has a relatively high fluidity, so that it can cover the surface of the electronic element 141 well. In addition, the surface of the electronic element 141 is covered with a thin protective film 146. The combination of the sealing part 143 and the conformal coating can more effectively protect the electrolytic capacitor. In a situation where the heat dissipation to the electronic element 141 is not affected, the housing of the electrolytic capacitor can be effectively prevented from being corroded by the corrosive working medium, and the service life of the electronic element 141 can be improved, and the service life of the control panel unit 14 can be improved.

[0021] As shown in FIG. 16 , the electronic element 141 includes a base 144 and a housing 1411, the base 144 includes a positioning hole 1443, the positioning hole 1443 extends along the thickness direction of the base 144, at least a portion of the housing 1411 is located in the positioning hole 1443, the base 144 is fixedly connected to the substrate 142, the base 144 includes a first surface 1441 and a second surface 1442, the second surface 1442 is spaced apart from the substrate 142 relative to the first surface 1441 along the axial direction of the electric pump 100, the first end 1413 is one end of a unit formed by combining the base 144 and the housing 1411, The end face of the first end 1413 is the first surface 1441, the engagement portion 24 is the portion where the base 144 and the substrate 142 engage relative to each other, the sealing portion 143 includes a first portion 1433 and a second portion 1434, the first portion 1433 includes a first contact portion 1433a and a second contact portion 1433b, the second contact portion 1433a is oil-sealed and connected to the outer circumferential side of the outer wall surface of the housing 1411, the first contact portion 1433a is oil-sealed and connected to the second surface 1441, the second portion 1434 is oil-sealed and connected to the end face of the first end 1413. This embodiment enhances the stability of the electronic element 141 while also effectively oil-sealing the electronic element 141, thereby preventing the working medium from entering the area where the first end 1413 of the electronic element 141 is located.

[0022] As shown in FIG. 17, the first section 1433 and the second section 1434 are connected and installed. In this manner, the structure of the sealing portion 143 is made more stable, and in a corrosive working medium, the integral structure further enables the sealing portion 143 to maintain good oil sealing performance for a long period of time.

[0023] As shown in FIG. 18, the electronic element 141 includes a housing 1411, a first end 1413 is located at one end of the housing 1411, an engagement portion 24 is a portion where the substrate 142 and the housing 1411 engage with each other, and a sealing portion 143 is oil-sealed and connected to the surface of the substrate 142 and the sealing portion 143 is oil-sealed and connected to the end face of the first end 1413.

[0024] Based on the embodiments shown in Figures 16, 17 and 18, the electronic element 1461 may be provided with a covering portion, for which reference may be made to the embodiments shown in Figures 12 and 13, and will not be described in detail here.

[0025] The present invention shown in Figures 1 to 18 further discloses a manufacturing method for an electric pump, which includes a step of applying a sealing material to at least the outer wall surface of the first end 1413 and the surface of the substrate 142, where the application here and "application" below specifically include, but are not limited to, "painting", and the process of applying may be, but is not limited to, spray application, coating, or painting, and is not specifically limited here.

[0026] The sealing material is hardened to form a sealing portion 143, the sealing portion 143 including a blocking surface 1435, and a control panel unit 14 is obtained, the control panel unit 14 including a sealing chamber 146, the wall surface corresponding to the sealing chamber 146 including at least the blocking surface 1435, a surface of a part of the substrate 142, and an inner wall surface of the housing 1411, or the sealing material is applied to the surface of the sealing rubber pad 1412 of the electronic element 141, and the sealing material completely covers the surface of the sealing rubber pad 1412. It hardens to form sealing portion 143, which includes a main body portion 1436, an outer portion 1437 which is the outer peripheral wall surface of main body portion 1436, and outer portion 1437 which is sealed and connected circumferentially to the inner wall surface of first end portion 1413, and main body portion 1436 which covers the surface of sealing rubber pad 1412. The main body portion 1436 may cover the sealing rubber pad 1412 in a contacting or non-contacting manner, and the main body portion 1436 and the sealing rubber pad 1412 are projected onto the first surface of the substrate 142 along the axial direction of the electric pump 100, and the projection of the sealing rubber pad 1412 is located within the projection of the main body portion 1436. According to this embodiment, firstly, it is possible to effectively prevent the external working medium from entering the inside of the electronic element 141, thereby protecting the electronic element 141 and improving the service life of the electric pump 100. Secondly, the process of implementing the sealing portion 143 is simple and conducive to mass production.

[0027] The present invention shown in Figs. 1 to 18 further discloses a manufacturing method of another electric pump 100, forming a first gap L1 between the first end 1413 and the second surface 1422 of the substrate 142 before applying the first sealant; The first sealant is applied in a circumferential direction around the outer wall of the first end 1413 of the electronic element 141, at least a portion of the first sealant contacts the outer wall of the first end 1413 in the circumferential direction, at least a portion of the first sealant contacts the second surface 1422 of the substrate 142 and extends in a radially outward direction of the first end along the upper surface of the substrate 142, and the extension height dimension of the sealing material along the axial direction of the electronic element 141 is a step that is larger than the dimension of the first gap L1. , and what is to be explained is that the bottom of the sealing portion 143 is a first reference plane, a first point is provided on the upper surface of the sealing portion 143 in the axial direction of the electronic element 141, the distance dimension from the first point to the first reference plane is equal to or less than the distance dimension from the remaining points excluding the first point on the upper surface of the sealing portion 143 to the first reference plane, and a second reference plane is provided, which passes through the first point and is parallel to the first reference plane, and the distance between the first reference plane and the second reference plane is the extension height dimension.

[0028] The sealing portion 143 is formed by hardening, and the sealing portion 143 includes a bottom portion 1432 and a side portion 1431. The wall surface that is sealingly connected to the outer wall of the first end portion 1413 is the side portion 1431, the wall surface that is sealingly connected to the upper surface of the substrate 142 is the bottom portion 1432, and the wall surface corresponding to the sealed chamber 146 includes at least the inner wall surface of the housing 1411 of the electronic element 141, the blocking surface 1435, and at least a portion of the surface of the substrate 142. According to this embodiment, the amount of the first sealant required is small, which saves on the amount of the first sealant used and further reduces the cost of the control panel unit. Second, the sealing chamber 146 formed by at least the sealing part 143, the substrate 142, and the housing 1411 can effectively protect the sealing rubber pad 1412, improve the service life of the sealing rubber pad 1412, contribute to protecting the electronic element 141, contribute to reducing the risk of the electronic element 141 failing, and improve the service life of the electronic element 141.

[0029] Furthermore, the sealing material further includes a second sealant, and the electronic element 141 includes a sealing rubber pad 1412 that is circumferentially sealed and connected to the inner wall of the first end portion 1413, and by applying the second sealant to the front surface of the sealing rubber pad 1412 and the inner wall surface of the first end portion 1413, the first sealant completely covers the front surface and hardens to form the covering portion 145. The covering portion 145 includes a main body portion 1451, the outer periphery of which is sealed and connected circumferentially to the inner wall surface of the first end portion 1413, and the electronic element 141 includes a sealing rubber pad 1412, which is sealed and connected circumferentially to the inner wall of the first end portion 1413, and which includes a front surface 1412a and a back surface 1412b. Along the axial direction of the electric pump, the front surface 1412a is closer to the substrate 142 than the back surface 1412b, the main body portion 1451 is in contact with and covers the front surface 1412a, the main body portion 1451 and the front surface 1412a are projected onto a plane in which the front surfaces are located, and the projected area of ​​the main body portion 1451 is greater than or equal to the projected area of ​​the front surface 1412a. In this manner, the sealing rubber pad 1412 can be doubly guarded, which can contribute to reducing corrosion of the sealing rubber pad 1412 caused by the working medium.

[0030] The present invention shown in Figs. 1 to 18 further discloses a manufacturing method for a third type electric pump 100, The sealing material includes a first sealant, the control panel unit 14 includes a base 144, the base 144 includes a positioning hole, the positioning hole extends along a thickness direction of the substrate 142, the first end 1413 is positionally restricted and connected to the positioning hole, the base 144 is fixedly connected to the substrate 142, a second gap is formed between the first end 1413 and the positioning hole, and a third gap is formed between the first surface of the base 144 and the second surface of the substrate 142, the step including: applying the first sealant to the second gap L2 so that the first sealant completely covers the second gap L2; applying the first sealant to the third gap L3 so that the first sealant completely covers the third gap L3; The method includes a step of hardening the sealing portion 143 to form the sealing portion 143, the sealing portion 143 including a first portion 1433 and a second portion 1434, the first portion 1433 including a first contact portion and a second contact portion, the second portion including a first joint portion and a second joint portion, the blocking surface 1435 including a first blocking surface 1435 and a second blocking surface 1435, the first blocking surface 1435 being located at the first contact portion and the second blocking surface 1435 being located at the second joint portion, and the wall surface corresponding to the sealing chamber 146 including the inner wall surface of the housing 1411, the first blocking surface 1435, at least a portion of the first surface, the second blocking surface 1435, and at least a portion of the surface of the substrate 142. This embodiment increases the connection strength between the electronic element 141 and the substrate 142, and at the same time contributes to reducing corrosion of the electronic element 141 due to the working medium. Furthermore, the sealing material further includes a second sealant, and the electronic element 141 includes a sealing rubber pad 1412 that is circumferentially sealed and connected to the inner wall of the first end portion, and by applying the second sealant to the front surface of the sealing rubber pad 1412 and the inner wall surface of the first end portion, the first sealant completely covers the front surface and hardens to form a covering portion. In this manner, the sealing rubber pad 1412 can be doubly guarded, and corrosion of the sealing rubber pad 1412 due to the working medium can be reduced.

[0031] The present invention further provides a fourth type of electric pump manufacturing method, in which the electronic element 141 further includes a sealing rubber pad 1412, and the sealing rubber pad 1412 is sealedly connected to an inner wall of the first end 1413 in a circumferential direction; applying a second sealant to the front surface 1412a and the inner wall surface of the first end 1413 of the sealing rubber pad 1413 so that the first sealant covers the front surface 1412a; It hardens to form a sealing portion 143, which includes a main body portion 1436, a blocking surface 1435 located on the inner surface, and a wall surface corresponding to the sealing chamber includes an inner wall surface of the housing 1411 and a step including the blocking surface 1435. Specifically, before the electronic element 141 is welded to the substrate 142 , a second sealant is applied to the inner wall of the first end and the front surface of the sealing rubber pad 1412 , and the second sealant is cured to form the sealing portion 143 . In this manner, compared with the embodiment in which the second sealant is applied after the electronic element 141 is welded to the substrate 142, the present embodiment can effectively prevent the second sealant from flowing to other positions on the substrate 142 and wasting the second sealant, that is, the present embodiment can reduce the cost of the control panel unit 14 and further reduce the production cost of the electric pump 100.

[0032] The present invention shown in Figs. 1 to 18 further provides a method for manufacturing an electric pump, applying a first sealing material to a circumferential outer side of the engagement portion; hardening the first sealing material, so that the first sealing material is oil-sealed and connected to the surface of the substrate 142 and the first sealing material is oil-sealed and connected to the outer peripheral side of the outer wall surface of the first end 1413; a step of assembling the control panel unit 14 and the stator unit 13, and disposing the unit formed by the control panel unit 14 and the stator unit 13 in the accommodation chamber of the electric pump 100, or disposing the stator unit 13 in the accommodation chamber of the electric pump 100, assembling the control panel unit 14 in the accommodation chamber of the electric pump 100, and electrically connecting the control panel unit 14 and the stator unit 13; The method includes a step of assembling the first rotor unit 11 into an accommodation chamber of the electric pump 100, and communicating a portion where the first rotor unit 11 is located with a portion where the control panel unit 14 is located. According to this embodiment, the amount of the first and second sealing materials required is small, which saves the amount of the first sealing material used, and further reduces the cost of the control panel unit 14. At the same time, the sealing rubber pad 1412 can be effectively protected and the service life of the sealing rubber pad 1412 can be improved, which contributes to protecting the electronic element 141 and reducing the risk of the electronic element 141 failing, and further improves the service life of the electronic element 141.

[0033] The present invention shown in Figs. 1 to 18 further provides a method for manufacturing an electric pump, Applying a second sealing material to the engagement portion 24; hardening the second sealing material, so that the second sealing material is oil-sealed and connected to the surface of the substrate 142 and the second sealing material is oil-sealed and connected to the end face of the first end 1413; a step of assembling the control panel unit 14 and the stator unit 13, and disposing the unit formed by the control panel unit 14 and the stator unit 13 in the accommodation chamber of the electric pump 100, or disposing the stator unit 13 in the accommodation chamber of the electric pump 100, assembling the control panel unit 14 in the accommodation chamber of the electric pump 100, and electrically connecting the control panel unit 14 and the stator unit 13; The method includes a step of assembling the first rotor unit 11 into the housing chamber of the electric pump 100, and communicating a portion where the first rotor unit 11 is located with a portion where the control panel unit 14 is located. This embodiment can prevent the working medium from entering the inside of the electronic element 141 while reducing the area occupied by the first sealing material of the substrate 142, thereby contributing to realizing a compact design of the control panel unit 14. The present invention shown in Figures 1 to 18 further provides a manufacturing method for an electric pump, comprising applying a second sealant to the inner peripheral side of an inner wall surface of a housing 1411 of the electronic element 141 on the same side as the pin of the electronic element 141, curing the second sealant, and the second sealing material oil-sealing the end face of the electronic element 141. In this manner, protection for the electronic element 141 can be reinforced.

[0034] The present invention shown in FIGS. 1 to 18 is a method for manufacturing an electric pump, a step of assembling the electronic element 141, the step including placing a sealing rubber pad 1412 in an area within the inner circumference of the housing 1411 of the electronic element 141, so that the sealing rubber pad 1412 is oil-sealed and connected to the inner circumference of the housing 1411; and assembling the electronic element 141 and the substrate 142.

[0035] The present invention shown in Figures 1 to 18 further provides a method for manufacturing an electric pump, which includes a step of applying a second sealing material to the area between the housing 1411 and the substrate 142 and / or applying a second sealing material to the area between the sealing rubber pad 1412 and the substrate 142.

[0036] The present invention shown in FIGS. 1 to 18 further provides a method for manufacturing an electric pump, which includes applying a second sealing material to the area between the housing 1411 and the substrate 142.

[0037] The present invention shown in Figs. 1 to 18 further provides a method for manufacturing an electric pump, Assembling the electronic device 141, including assembling the housing 1411 and the base 144; The method includes applying a first sealing material to the circumferential outside of a connection point between the base 144 and the housing 1411, applying a first sealing material to the circumferential outside of a connection point between the base 144 and the substrate 142, and / or applying a second sealing material to the area between the base 144 and the substrate 142.

[0038] The above examples are not intended to limit the present invention, but are only used to illustrate the present invention. Although the present specification has already described the present invention in detail with reference to the above examples, those skilled in the art will understand that modifications or equivalent substitutions can be made to the present invention, and any improvements that do not depart from the spirit and scope of the present invention are included within the scope of the claims of this application.

Claims

1. An electric pump including a stator unit and a control panel unit electrically connected thereto, The electric pump includes a housing, The control panel unit includes a substrate and an electronic element. the substrate is located in the chamber; the electronic element is located in the chamber; At least one of the electronic elements includes a pin and a first end toward the substrate; The pins of the electronic element are electrically connected to the substrate; the first end is on the same side as a pin of the electronic element; When the electric pump is operating, a working medium is present in the accommodating chamber, the electronic element and the board come into contact with the working medium, and the portion where the board and the electronic element engage relative to each other is defined as an engagement portion, and the control panel unit has a sealing portion installed at the engagement portion, or the control panel unit has a sealing portion installed outside the engagement portion, thereby preventing the working medium from entering the portion where the first end of the electronic element is located.

2. The electronic element includes a housing and a sealing rubber pad; The sealing rubber pad is oil-sealed and installed on the inner periphery of the housing, The sealing rubber pad includes a front surface and a back surface, Along an axial direction of the electric pump, the front surface is closer to the substrate than the back surface, The sealing rubber pad covers an inner area of ​​the housing on an inner periphery side, 2. The electric pump of claim 1, wherein the first end includes a front surface of a sealing rubber pad.

3. The electronic device includes a housing. the first end includes an end of the housing relatively close to the substrate, the engaging portion includes a portion where the substrate and the housing engage with each other, The sealing portion includes a bottom portion and a side portion, The side portion is disposed on a peripheral side of an outer wall surface of the first end portion and is oil-sealed thereto, 3. The electric pump according to claim 1, wherein the bottom portion is disposed on the surface of the base plate and is oil-sealed thereon.

4. The electronic device includes a base and a housing. the base is fixedly connected to the housing and to the substrate and includes a first side and a second side; the second surface is spaced apart from the substrate relative to the first surface along an axial direction of the electric pump; the first end includes an end of the base relatively close to the substrate and an end of the housing relatively close to the substrate; the engaging portion includes a portion where the base and the substrate engage with each other; the engaging portion includes a portion where the housing and the board engage with each other, The sealing portion includes a first portion and a second portion, the first portion includes a first contact portion and a second contact portion; The second portion includes a first bonding portion and a second bonding portion, The first contact portion is disposed on the second surface and is oil-sealed thereon, the second contact portion is disposed on an outer peripheral side of an outer wall surface of the housing and is oil-sealed thereon; the first joint portion is disposed on a surface of the substrate and is oil-sealed; 3. The electric pump according to claim 1, wherein the second joint portion is disposed on an outer circumferential side of at least a part of an outer wall surface of the base by being oil-sealed.

5. The electric pump of claim 2, 3 or 4, characterized in that a sealing portion of the control panel unit installed outside the engagement portion is defined as a first sealing portion, and the control panel unit has a second sealing portion installed at the engagement portion, thereby preventing the working medium from entering the area where the first end of the electronic element is located.

6. The electronic device includes a housing. the first end includes an end of the housing relatively close to the substrate, the engagement portion includes a region between the substrate and the first end, 6. The electric pump according to claim 5, wherein the sealing portion is connected to the surface of the base plate by being oil-sealed, and the sealing portion is connected to an end face of the first end portion by being oil-sealed.

7. The electric pump according to any one of claims 1 to 6, wherein the control panel unit further includes a protective film, and the protective film covers surfaces of at least some of the electronic elements.

8. the electronic element includes a capacitor; 8. The electric pump of claim 7, wherein the capacitor comprises an electrolytic capacitor, a hybrid capacitor, or a solid capacitor.

9. The storage chamber includes a first storage chamber, a second storage chamber, and a third storage chamber, One side of the control panel unit is the first storage chamber, and the other side of the control panel unit is the second storage chamber, The first storage chamber and the second storage chamber are in communication with each other, the stator unit is located in the first housing chamber, The electric pump further includes a first rotor unit; the first rotor unit is located in the third housing chamber, The wall surface corresponding to the third storage chamber includes a bottom wall, the bottom wall is used to support the first rotor unit; The electric pump further includes a first passage. The first passage passes through the upper and lower surfaces of the bottom wall, The third chamber communicates with the first chamber, the electric pump further includes a pump shaft, one end of the pump shaft is connected to the first rotor unit, and the pump shaft includes a second passage; the second passage extends through a first end surface of the pump shaft and a second end surface of the pump shaft, 9. The electric pump according to claim 8, wherein when the electric pump is operated, a pressure of the working medium at the inlet of the first passage is greater than a pressure of the working medium at the outlet of the second passage, and the working medium is allowed to exit the first chamber through the second passage.

10. applying a first sealing material to a circumferential outer side of the engagement portion; hardening the first sealing material, and connecting the first sealing material to the surface of the substrate by oil sealing and connecting the first sealing material to an outer peripheral side of an outer wall surface of the first end by oil sealing; a step of assembling the control panel unit and the stator unit, and disposing a unit formed by the control panel unit and the stator unit in an accommodation chamber of the electric pump, or disposing the stator unit in the accommodation chamber of the electric pump, assembling the control panel unit in the accommodation chamber of the electric pump, and electrically connecting the control panel unit and the stator unit; A method for manufacturing an electric pump, comprising the steps of assembling a first rotor unit into an accommodating chamber of the electric pump, and communicating a location where the first rotor unit is located with a location where the control panel unit is located.

11. Applying a second sealing material into the engagement portion; hardening the second sealing material, and connecting the second sealing material to the surface of the substrate with oil sealing and connecting the second sealing material to the end face of the first end with oil sealing; a step of assembling the control panel unit and the stator unit, and disposing a unit formed by the control panel unit and the stator unit in an accommodation chamber of the electric pump, or disposing the stator unit in the accommodation chamber of the electric pump, assembling the control panel unit in the accommodation chamber of the electric pump, and electrically connecting the control panel unit and the stator unit; A method for manufacturing an electric pump, comprising the steps of assembling a first rotor unit into an accommodating chamber of the electric pump and connecting a location where the first rotor unit is located with a location where the control panel unit is located.

12. a step of assembling an electronic component, the step including placing a sealing rubber pad in an area within an inner periphery of a housing of the electronic component, so that the sealing rubber pad material is oil-sealed and connected to the inner periphery of the housing; The method for manufacturing an electric pump according to claim 10 or 11, further comprising the step of assembling the electronic element and the substrate.

13. 13. The method for manufacturing an electric pump according to claim 12, further comprising the step of applying a second sealing material to an area between the housing and the substrate, and / or applying a second sealing material to an area between a sealing rubber pad and the substrate.

14. The method of claim 10, further comprising the step of applying a second sealing material to an area between the housing and the substrate.

15. Assembling the electronic device, including assembling the housing and the base; The method for manufacturing an electric pump according to any one of claims 10 to 14, further comprising the steps of: applying a first sealing material to a circumferential outside of a connection point between the base and the housing; applying the first sealing material to a circumferential outside of a connection point between the base and the substrate; and / or applying a second sealing material to a region between the base and the substrate.

Images