Electronic water pump, thermal management system, vehicle and assembly method of electronic water pump

Abstract

The invention discloses an electronic water pump, a heat management system, a vehicle and an assembly method of the electronic water pump, the electronic water pump comprises a machine shell and an end cover, the end cover is arranged at one axial end of the machine shell in a covering mode and matched with the machine shell to define a mounting cavity, the machine shell is connected with the end cover through a welding structure, and the end cover is arranged in the mounting cavity. The welding structure is formed by welding a first welding convex rib and a second welding convex rib, the first welding convex rib is arranged at the axial end part of the shell, and the second welding convex rib is arranged at the axial end part of the end cover; and the control panel assembly is arranged in the mounting cavity, a connecting convex part is arranged on the periphery of the control panel assembly, and the connecting convex part is connected with the welding structure. According to the electronic water pump, the machine shell, the end cover and the control panel assembly can be synchronously connected, the assembling procedures are effectively reduced, the assembling technology is simplified, the assembling efficiency is improved, the connecting structure is simple, the structural size is reduced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and in particular to an electronic water pump, a thermal management system, a vehicle and an assembly method of the electronic water pump. Background Art

[0002] Electronic water pumps are widely used due to their advantages of high efficiency and precise control. In the related art, the assembly process of electronic water pumps is complicated and the assembly procedures are cumbersome, resulting in low assembly efficiency and high cost of electronic water pumps, and there is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an electronic water pump with a simple production process, which is conducive to improving assembly efficiency.

[0004] The present invention also provides a thermal management system including the electronic water pump.

[0005] The present invention also provides a vehicle comprising the thermal management system.

[0006] The invention also provides an assembly method of the electronic water pump.

[0007] According to an embodiment of the present invention, the electronic water pump includes: a casing and an end cover, wherein the end cover is arranged at one axial end of the casing and cooperates with the casing to define a mounting cavity, the casing and the end cover are connected by a welding structure, and the welding structure is welded by a first welding rib and a second welding rib, the first welding rib is arranged at the axial end of the casing, and the second welding rib is arranged at the axial end of the end cover; a control board assembly, the control board assembly is arranged in the mounting cavity, and the outer periphery of the control board assembly is provided with a connecting protrusion, and the connecting protrusion is connected to the welding structure.

[0008] According to the electronic water pump of the embodiment of the present invention, the casing and the end cover are connected by a welding structure, and the welding structure is connected to the connecting protrusion of the control board assembly, so that the casing, the end cover and the control board assembly can be connected synchronously, effectively reducing the assembly process, simplifying the assembly process, improving the assembly efficiency, and making the connection structure between the various parts simple, which is conducive to reducing the structural volume and reducing costs.

[0009] In addition, the electronic water pump according to the above embodiment of the present invention may also have the following additional technical features:

[0010] According to some embodiments of the present invention, a material stopper structure is provided on the radial inner side of the welding structure, and the connecting protrusion radially penetrates the material stopper structure.

[0011] According to some embodiments of the present invention, the material stopping structure includes a first material stopping rib arranged on the casing, the first material stopping rib is provided with a groove recessed in a direction away from the end cover, the groove radially penetrates the first material stopping rib, and the connecting protrusion is penetrated in the groove.

[0012] According to some embodiments of the present invention, an axial dimension of the connecting protrusion is smaller than or equal to an axial dimension of the first material stop rib.

[0013] According to some embodiments of the present invention, the material stopping structure further includes a second material stopping rib provided on the end cover, wherein the second material stopping rib at least partially extends into the groove and abuts against or loosely fits with the connecting protrusion.

[0014] According to some embodiments of the present invention, an outer periphery of the control board assembly is spaced apart from the material blocking structure by a set distance.

[0015] According to some embodiments of the present invention, the set distance is greater than or equal to 3 mm.

[0016] According to some embodiments of the present invention, before the first welding rib is welded to the second welding rib, the end face and / or side face of the radial outer end of the connecting protrusion is provided with a protrusion and / or a recess, and the outer surface of the protrusion and / or the inner surface of the recess is connected to the welding structure.

[0017] According to some embodiments of the present invention, there are a plurality of connecting protrusions, and the plurality of connecting protrusions are arranged at intervals along the circumference of the control board assembly.

[0018] According to some embodiments of the present invention, the welding structure extends in a ring shape along the circumference of the electronic water pump, and a plurality of the connecting protrusions are connected to different areas of the welding structure; or, there are multiple welding structures, and the plurality of welding structures are arranged at intervals along the radial direction of the electronic water pump, and the connecting protrusions are connected to at least the innermost circle of the welding structure.

[0019] According to some embodiments of the present invention, overflow grooves are respectively provided on both radial sides of the welding structure, and the connecting protrusion at least extends into the overflow groove on the radial inner side of the welding structure.

[0020] According to some embodiments of the present invention, the housing is provided with a plurality of positioning columns, the control panel assembly is provided with a positioning hole extending axially, the positioning column comprises a first column and a second column, the first column connects the second column and the housing, the outer diameter of the first column is greater than the outer diameter of the second column, the second column is passed through the positioning hole, and the control panel assembly is supported on the first column.

[0021] According to some embodiments of the present invention, the control panel assembly is provided with a first socket and a second socket, a stator assembly is provided in the housing, a stator terminal of the stator assembly is inserted into the first socket, and the end cover is provided with a connector terminal, and the connector terminal is inserted into the second socket.

[0022] A thermal management system according to an embodiment of the present invention includes an electronic water pump according to an embodiment of the present invention.

[0023] A vehicle according to an embodiment of the present invention includes a thermal management system according to an embodiment of the present invention.

[0024] According to an assembly method of an electronic water pump in an embodiment of the present invention, the electronic water pump includes a housing, a control board assembly and an end cover, the housing is provided with a first welding rib, the end cover is provided with a second welding rib, and the control board assembly is provided with a connecting convex portion. The assembly method includes: placing the control board assembly between the housing and the end cover; hot-melting the first welding rib and the second welding rib to weld the first welding rib and the second welding rib, and at the same time, the welding overflow is connected to the connecting convex portion.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a cross-sectional view of an electronic water pump according to an embodiment of the present invention;

[0028] Figure 2 yes Figure 1 The middle circle shows the enlarged structural schematic diagram of A;

[0029] Figure 3 is an exploded view of an electronic water pump according to an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of a control panel assembly according to an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of the matching structure of a housing and a stator assembly according to an embodiment of the present invention;

[0032] Figure 6 is a schematic diagram of the matching structure of a housing, a stator assembly and a control board assembly according to an embodiment of the present invention;

[0033] Figure 7 is a schematic structural diagram of an end cover according to an embodiment of the present invention;

[0034] Figure 8 is a structural schematic diagram of a stator assembly according to an embodiment of the present invention;

[0035] Fig. 9 is a schematic diagram of a vehicle according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] Vehicles 1000;

[0038] Electronic water pump 100; thermal management system 200;

[0039] Housing 10; mounting cavity 101; positioning column 11; first column 111; second column 112;

[0040] End cover 20; Connector terminal 21;

[0041] Welding structure 30; first welding rib 31; second welding rib 32; overflow groove 33;

[0042] Control board assembly 40; connecting convex portion 41; protrusion 411; concave portion 412; positioning hole 42; first plug hole 43; second plug hole 44;

[0043] Material blocking structure 50; first material blocking rib 51; groove 511; second material blocking rib 52;

[0044] Stator assembly 60 ; stator terminal 61 . DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0046] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0047] In the related art, the control panel assembly of the electronic water pump is first installed on the housing by means of buckles, fasteners, rivets, etc., and then the end cover is placed on the housing and the end cover and the housing are sealed and connected by fasteners, sealing rings, etc. The assembly process of the electronic water pump is complicated, the assembly process is cumbersome, and there are many parts, resulting in low assembly efficiency and high cost of the electronic water pump, and there is room for improvement.

[0048] Based on this, the present application proposes an electronic water pump 100, which can simplify the assembly process between the control board assembly 40, the housing 10 and the end cover 20, thereby simplifying the assembly process and assembly process of the electronic water pump 100, improving the assembly efficiency of the electronic water pump 100 and reducing costs.

[0049] Below, refer to Figure 1-Figure 8 , describing an electronic water pump 100 according to an embodiment of the present invention.

[0050] like Figure 1-Figure 3 As shown, the electronic water pump 100 according to the embodiment of the present invention includes: a housing 10 , an end cover 20 and a control board assembly 40 .

[0051] Specifically, the end cover 20 is disposed at one axial end of the casing 10 and cooperates with the casing 10 to define an installation cavity 101. The casing 10 and the end cover 20 are connected via a welding structure 30. The welding structure 30 is welded by a first welding rib 31 and a second welding rib 32. The first welding rib 31 is disposed at the axial end of the casing 10, and the second welding rib 32 is disposed at the axial end of the end cover 20.

[0052] In this way, the connection stability between the housing 10 and the end cover 20 can be enhanced, and the sealing of the installation cavity 101 can be enhanced to enhance the working reliability of the electronic water pump 100. At the same time, the welding production process is simple, and no separate structure is required to connect the housing 10 and the end cover 20, which is conducive to reducing production costs and realizing a lightweight design of the electronic water pump 100.

[0053] In some embodiments, the first welding rib 31 and the second welding rib 32 can be heated by ultrasonic, hot air, hot mold or infrared, so that the first welding rib 31 and the second welding rib 32 are at least partially melted and deformed. Among them, the infrared heating method has high heating efficiency and is convenient for accurately controlling the heating position, and it is easy to control the hot melting state of the first welding rib 31 and the second welding rib 32, so as to ensure the welding effect of the two and the connection effect with the connecting protrusion 41.

[0054] For example, during specific assembly, the first welding rib 31 and the second welding rib 32 may be first aligned or roughly aligned in the axial direction of the electronic water pump 100, and then the first welding rib 31 and the second welding rib 32 may be heat-melted by infrared heat-melting, and then the first welding rib 31 and the second welding rib 32 may be press-fitted and welded together to form a welding structure 30, that is, the housing 10 and the end cover 20 may be press-fitted and welded together, thereby achieving a sealed assembly of the housing 10 and the end cover 20.

[0055] In addition, the control board assembly 40 is disposed in the installation cavity 101. The control board assembly 40 can be used to control the working state of the electronic water pump 100 or to supply power to the electronic water pump 100. For example, a stator assembly 60 can be disposed in the housing 10, and the control board assembly 40 can be electrically connected to the stator assembly 60. Specifically, the electronic water pump 100 can also include a stator terminal 61, which is penetrated through the housing 10 so that one end of the stator terminal 61 is connected to the stator assembly 60, and the other end is connected to the control board assembly 40 (such as soldering connection).

[0056] like Figure 1-Figure 4 As shown, the outer periphery of the control board assembly 40 is provided with a connecting protrusion 41, and the connecting protrusion 41 is connected to the welding structure 30. In other words, the welding structure 30 is used for both the connection between the housing 10 and the end cover 20 and the fixation of the control board assembly 40, which is conducive to eliminating the additional fixing structure of the control board assembly 40, reducing the number of parts and simplifying the structure. In addition, during the assembly process, the connection between the housing 10 and the end cover 20 and the fixation of the control board assembly 40 can be carried out simultaneously, for example, the first welding rib 31 and the second welding rib 32 after hot melting are opposite and pressed against each other for welding, and the welding overflow can flow to the connecting protrusion 41 and contact with the connecting protrusion 41 to achieve connection. Thus, the welding structure 30 formed after welding is connected to the connecting protrusion 41 to achieve the limited fixation of the control board assembly 40. In addition, no additional solder is required during the welding process, which avoids interference with the assembly of the end cover 20 and the housing 10 and the connection of the control board assembly 40, and the connection between the welding structure 30 and the connecting protrusion 41 is simple, which is conducive to reducing the structural volume and reducing costs.

[0057] According to the electronic water pump 100 of the embodiment of the present invention, the housing 10 and the end cover 20 are connected by a welding structure 30, and the welding structure 30 is connected to the connecting protrusion 41 of the control board assembly 40, so that the housing 10, the end cover 20 and the control board assembly 40 can be connected synchronously, effectively reducing the assembly process, simplifying the assembly process, improving the assembly efficiency, and making the connection structure between the various parts simple, which is conducive to reducing the structural volume and reducing costs.

[0058] According to some embodiments of the present invention, Figure 2-Figure 3 and Figure 5-Figure 7As shown, a material-blocking structure 50 is provided on the radial inner side of the welding structure 30 , and the connecting protrusion 41 penetrates the material-blocking structure 50 in the radial direction.

[0059] During the process of hot-melting the first welding rib 31 and the second welding rib 32 being pressed against each other to achieve welding, part of the hot-melting material will flow to the surroundings. The material blocking structure 50 can prevent the hot-melting material from flowing into the installation cavity 101 and damaging the internal components such as the control board assembly 40.

[0060] The connecting protrusion 41 is radially penetrated in the material blocking structure 50 , so that the connecting protrusion 41 can extend to the area where the hot-melt material can flow. Therefore, during the welding process, the hot-melt material can fully connect with the connecting protrusion 41 to achieve the connection between the welding structure 30 and the connecting protrusion 41 .

[0061] Here, the connection protrusion 41 passes through the material retaining structure 50 in the radial direction, which needs to be understood in a broad sense, that is, the connection protrusion 41 can extend parallel to the radial direction of the electronic water pump 100, or can extend obliquely, bend or curve relative to the radial direction of the electronic water pump 100. It is only necessary that the connection protrusion 41 can extend from the radial inner side of the material retaining structure 50 to the radial outer side of the material retaining structure 50 to facilitate connection with the welding structure 30.

[0062] In some embodiments, Figure 2 and Figure 5-Figure 6 As shown, the material blocking structure 50 includes a first material blocking rib 51 arranged on the housing 10, and the first material blocking rib 51 is provided with a groove 511 recessed in a direction away from the end cover 20, the groove 511 radially penetrates the first material blocking rib 51, and the connecting protrusion 41 is penetrated in the groove 511.

[0063] During the welding process of the first welding rib 31 and the second welding rib 32, the hot melted and flowing material is blocked by the first material stop rib 51 and accumulates on the radial outer side of the first material stop rib 51. By the connection convex portion 41 being inserted into the groove 511, the connection convex portion 41 is closer to the bottom of the first material stop rib 51, so that the material blocked by the first material stop rib 51 is more likely to flow to the circumferential side of the connection convex portion 41 and the side axially facing away from the housing 10, thereby increasing the connection area with the connection convex portion 41 and improving the fixing stability of the control board assembly 40. In addition, the connection convex portion 41 of the control board assembly 40 can be moved from the notch of the groove 511 to the inside of the groove 511 to achieve the pre-positioning of the control board assembly 40 and the housing 10 before welding, which is conducive to preventing the control board assembly 40 from rotating or shaking during welding and improving the assembly accuracy.

[0064] In the direction away from the end cover 20, the depth of the groove 511 can be equal to the height of the first material stop rib 51, so that the connecting protrusion 41 can contact the axial end surface of the casing 10, and a small amount of material can flow to the first material stop rib 51 to achieve connection with the connecting protrusion 41; or, the depth of the groove 511 can be less than the height of the first material stop rib 51, so that the material can be connected to the connecting protrusion 41 at least from one side of the connecting protrusion 41 close to the casing 10, both sides of the circumference, and the radial outer end at multiple angles to improve the connection reliability.

[0065] In some embodiments, Figure 2 and Figure 6 As shown, the axial dimension of the connecting protrusion 41 is less than or equal to the axial dimension of the first material stop rib 51. The material blocked by the first material stop rib 51 can flow to the axial sides, circumferential layers and radial outer end of the connecting protrusion 41, and the connecting protrusion 41 is fully wrapped to improve the fixing reliability of the control board assembly 40.

[0066] In some embodiments of the present invention, Figure 2 and Figure 7 As shown, the material-blocking structure 50 further includes a second material-blocking rib 52 disposed on the end cover 20 . The second material-blocking rib 52 at least partially extends into the groove 511 and abuts against or is gap-fitted with the connecting protrusion 41 .

[0067] The second stop rib 52 can be as follows Figure 7 The figure shows a plurality of short ribs arranged one by one in correspondence with the grooves 511 , and may also include an annular portion extending along the circumference of the end cover 20 and short rib portions arranged one by one in correspondence with the grooves 511 . The short ribs may extend into the grooves 511 .

[0068] The portion of the second material stop rib 52 extending into the groove 511 can limit the connection protrusion 41 in the axial direction by abutting against or having a clearance fit with the connection protrusion 41, so that the control board assembly 40 is not easy to shake in the axial direction and affect the installation position accuracy. In addition, the second material stop rib 52 can block the portion of the groove 511 that is not filled by the connection protrusion 41 to block the hot melt material, so that the material is not easy to overflow from the groove 511, thereby improving the effect of preventing overflow.

[0069] According to some embodiments of the present invention, Figure 4 and Figure 6As shown, the periphery of the control board assembly 40 is spaced apart from the material stop structure 50 by a set distance. Specifically, the control board assembly 40 is indirectly connected to the welding structure 30 through the connecting protrusion 41, rather than the control board assembly 40 being directly connected to the welding structure 30, which is conducive to controlling the spacing between the control board assembly 40 and the material stop structure 50, and further to controlling the safe distance between the control board assembly 40 and the welding structure 30. The high temperature during the welding process is not easy to interfere with the electronic components or circuits on the control board assembly 40, which is conducive to improving the reliability of the mechanical structure and electrical connection of the control board assembly 40.

[0070] For example, in some embodiments, the set distance between the periphery of the control board assembly 40 and the material blocking structure 50 is greater than or equal to 3 mm. Within the above value range, the distance between the periphery of the control board assembly 40 and the welding structure 30 is large enough to meet the safety distance requirement. In some specific embodiments, the set distance can be 3 mm, 4 mm, 5 mm, 6 mm, etc.

[0071] In some embodiments of the present invention, Figure 4 As shown, before the first welding rib 31 is welded to the second welding rib 32, at least one of the end face and the side face of the radial outer end of the connecting protrusion 41 can be provided with at least one of the protrusion 411 and the recess 412, so that at least one of the outer surface of the protrusion 411 and the inner surface of the recess 412 can be connected to the welding structure 30.

[0072] The radial outer end of the connecting protrusion 41 refers to the end radially away from the control board assembly 40; the side surface refers to the surface on both sides of the connecting protrusion 41 in the circumferential direction, or the surface on both sides of the axial direction. The connecting protrusion 41 can be provided with only the protrusion 411, or only the recess 412, or both the protrusion 411 and the recess 412 can be provided, which can increase the surface area of ​​the connecting protrusion 41, increase the connection area between the connecting protrusion 41 and the welding structure 30, and further improve the connection strength. In addition, the welding structure 30 is embedded in the recess 412 or the protrusion 411 is embedded in the welding structure 30, which can play a limiting role perpendicular to the embedding direction to further improve the connection strength and limiting effect.

[0073] For example, Figure 4 As shown, the end surface of the radial outer end of the connecting protrusion 41 is provided with two protrusions 411, the two protrusions 411 are spaced apart in the circumferential direction, and a recess 412 is provided between the two protrusions 411, which can effectively increase the connection area and improve the circumferential limiting stability.

[0074] According to some embodiments of the present invention, Figure 4 and Figure 6As shown, there are multiple connecting protrusions 41, and the multiple connecting protrusions 41 are arranged at intervals along the circumference of the control board assembly 40. The multiple connecting protrusions 41 can achieve the connection between the control board assembly 40 and the welding structure 30 from multiple locations in the circumference of the control board assembly 40, thereby improving the reliability of the connection of the control board assembly and improving the uniformity of the force applied to the control board assembly 40 in the circumference.

[0075] In some embodiments, Figure 5-Figure 7 As shown, the welding structure 30 extends in a ring shape along the circumference of the electronic water pump 100, and a plurality of connecting protrusions 41 are connected to different regions of the welding structure 30. Here, "ring shape" includes but is not limited to a circular ring shape and a square ring shape. The ring-shaped welding structure 30 is more conducive to achieving the seal between the end cover 20 and the housing 10, thereby improving the sealing of the installation cavity 101. The plurality of connecting protrusions 41 are connected to different regions of the welding structure 30, thereby improving the connection reliability and force uniformity of the control board assembly 40.

[0076] Furthermore, the annular welding structure 30 corresponds to the first welding rib 31 and the second welding rib 32 being annular, so that more material flows toward the connecting protrusion 41 during the mutual extrusion of the hot-melt first welding rib 31 and the second welding rib 32, which is beneficial to increase the connection area and connection reliability between the welding structure 30 and the connecting protrusion 41.

[0077] In some embodiments, there may be multiple welding structures 30, and the multiple welding structures 30 are arranged at intervals along the radial direction of the electronic water pump 100. Thus, multiple turns of connection are achieved through multiple welding structures 30, which can enhance the connection stability between the housing 10 and the end cover 20. The connecting protrusion 41 is at least connected to the innermost welding structure 30. In other words, the connecting protrusion 41 can be connected only to the innermost welding structure 30, or can be connected to multiple turns of welding structures 30.

[0078] For example, the connecting protrusion 41 can be penetrated through the material blocking structure 50 and extend to the radial inner side of the first welding rib 31 of the innermost circle, so that when the first welding rib 31 and the second welding rib 32 are welded, the hot-melt material flows inward and connects with the connecting protrusion 41; or, the connecting protrusion 41 can be penetrated through the material blocking structure 50 and the first welding rib 31 of the innermost circle, and extend to the radial inner side of the first welding rib 31 of the second circle from the inside to the outside, so that when welding, the hot-melt material of the innermost circle and the second circle flows toward the connecting protrusion 41 and connects with the connecting protrusion 41, so as to increase the connection area and further improve the connection reliability.

[0079] According to some embodiments of the present invention, Figure 2 and Figure 5-Figure 6As shown, overflow grooves 33 are respectively provided on both radial sides of the welding structure 30, and the connecting protrusion 41 at least extends into the overflow groove 33 on the radial inner side of the welding structure 30. In some embodiments, the material blocking structure 50 can be spaced a certain distance from the welding structure 30 to form the overflow groove 33.

[0080] When the first welding rib 31 and the second welding rib 32 are welded, at least a portion of the welding rib will melt and flow out due to the high welding temperature. By providing an overflow groove 33, the hot melt material can flow into the overflow groove 33 and fill the overflow groove 33. At the same time, the material flowing into the overflow groove 33 on the radial inner side of the welding structure 30 can fully contact the part of the connecting protrusion 41 located in the overflow groove 33, so that the material can wrap the connecting protrusion 41 to improve the connection effect. Therefore, the provision of the overflow groove 33 can avoid the overflow of the material resulting in poor welding sealing or poor stability, and also avoid the material from damaging the internal parts of the electronic water pump 100, and can also avoid the accumulation of the material at the connecting protrusion 41. The size is too small to affect the fixing reliability of the control board assembly 40.

[0081] In some specific embodiments, the connecting protrusion 41 can be as follows Figure 6 As shown, the connecting protrusion 41 extends into the overflow groove 33 on the radial inner side of the welding structure 30 . In other embodiments, the connecting protrusion 41 may also pass through the welding structure 30 to extend into the overflow grooves 33 on the radial inner side and the radial outer side of the welding structure 30 at the same time.

[0082] In the above embodiment, the overflow groove 33 refers to a groove provided in at least one of the housing 10 and the end cover 20 before the first welding rib 31 and the second welding rib 32 are welded. After welding, the overflow groove 33 can be completely filled with hot melt material or partially filled, which is within the scope of protection of the present invention. It should be noted that, in order to simplify the structure, Figure 2 The structure in which the hot melt material fills the overflow groove 33 and connects with the connecting protrusion 41 is not shown, but it does not mean that no material flows into the overflow groove 33.

[0083] In some specific embodiments, Figure 2 , Figure 5 and Figure 6 As shown, before the first welding rib 31 and the second welding rib 32 are welded, overflow grooves 33 are respectively provided on both radial sides of the first welding rib 31 ; and an overflow groove 33 is provided on the radial outer side of the second welding rib 32 .

[0084] According to some embodiments of the present invention, Figure 1 , Figure 3-Figure 6As shown, the housing 10 is provided with a positioning column 11, and the control board assembly 40 is provided with a positioning hole 42 extending in the axial direction. The positioning column 11 includes a first column 111 and a second column 112, the first column 111 connects the second column 112 and the housing 10, and the outer diameter of the first column 111 is greater than the outer diameter of the second column 112. The second column 112 is inserted into the positioning hole 42, and the control board assembly 40 is supported by the first column 111.

[0085] The outer diameter of the first column 111 is greater than the outer diameter of the second column 112, so that the axial end surface of the first column 111 facing away from the housing 10 can be partially offset from the second column 112, and the offset portion can support the control board assembly 40, reduce the deformation of the control board assembly 40 along the axial direction of the electronic water pump 100, and realize the axial positioning of the control board assembly 40. The outer circumferential surface of the second column 112 cooperates with the inner circumferential surface of the positioning hole 42 to realize the positioning of the control board assembly 40 in the radial direction of the electronic water pump 100.

[0086] In addition, in the embodiment where there are multiple positioning posts 11, there are multiple positioning holes 42 corresponding to the positioning posts 11. By inserting multiple positioning posts 11 into multiple positioning holes 42 respectively, the control plate assembly 40 can be positioned in the circumferential direction to prevent rotation.

[0087] Therefore, during the assembly process, the control board assembly 40 can be positioned by the positioning column 11, so that the control board assembly 40 is fixed relative to the housing 10, and the control board assembly 40 is prevented from moving during the welding process of the first welding rib 31 and the second welding rib 32, thereby affecting the connection with the connecting protrusion 41, which is beneficial to improving the connection reliability of the connecting protrusion 41. After the assembly is completed, the positioning column 11 can support the control board assembly 40, reduce the deformation or vibration of the control board assembly 40, and is beneficial to improving the connection reliability and service life of the electronic components.

[0088] In some embodiments, Figure 1 , Figure 3-Figure 8 As shown, the control panel assembly 40 is provided with a first jack 43, the housing 10 is provided with a stator assembly 60, and the stator terminal 61 of the stator assembly 60 is inserted into the first jack 43. Thus, the mechanical and electrical connection between the stator terminal 61 and the control panel assembly 40 is achieved, and the plug-in connection method makes the connection more reliable and the electrical connection structure is not easily damaged. The control panel assembly can control or provide electrical energy to the stator assembly 60.

[0089] In some embodiments, continue to refer to Figure 1 , Figure 3-Figure 8As shown, the control panel assembly 40 is provided with a second jack 44, and the end cover 20 is provided with a connector terminal 21, and the connector terminal 21 is inserted into the second jack 44. Thus, the mechanical connection and electrical connection between the connector terminal 21 and the control panel assembly 40 are achieved, and the plug-in connection method makes the connection more reliable and the electrical connection structure is not easily damaged. The connector terminal 21 can realize the connection between the control panel assembly 40 and the outside of the electronic water pump 100, for example, the control panel assembly 40 can be powered by the connector terminal 21.

[0090] In addition, during the assembly process, when the end cover 20 is covered on the housing 10, the connector terminal 21 can be simultaneously inserted into the second socket 44, the first welding rib 31 and the second welding rib 32 can be welded, and the welding structure 30 and the connecting protrusion 41 can be connected, which is beneficial to further reduce the assembly process, simplify the assembly process, and improve the assembly efficiency.

[0091] like Fig. 9 As shown, the thermal management system 200 according to the embodiment of the present invention includes the electronic water pump 100 according to the embodiment of the present invention. Since the electronic water pump 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, according to the thermal management system 200 according to the embodiment of the present invention, the housing 10 is connected to the end cover 20 through the welding structure 30, and the welding structure 30 is connected to the connecting protrusion 41 of the control board assembly 40, so that the housing 10, the end cover 20 and the control board assembly 40 can be connected synchronously, effectively reducing the assembly process, simplifying the assembly process, improving the assembly efficiency, and making the connection structure between the parts simple, which is conducive to reducing the structural volume and reducing the cost.

[0092] In some embodiments, the thermal management system 200 is an important component for regulating the vehicle cabin environment (temperature, humidity, etc.) and the working environment of other components, wherein the thermal management system 200 mainly includes: valves, heat exchangers, compressors and pumps, pumps such as the electronic water pump 100 or other water pumps, wherein the thermal management system 200 has a circulating refrigerant, which may be liquid antifreeze or carbon dioxide refrigerant, etc.

[0093] like Fig. 9 As shown, the vehicle 1000 according to the embodiment of the present invention includes the thermal management system 200 according to the embodiment of the present invention. Since the thermal management system 200 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, in the vehicle 1000 according to the embodiment of the present invention, the housing 10 is connected to the end cover 20 through the welding structure 30, and the welding structure 30 is connected to the connecting protrusion 41 of the control board assembly 40, so that the housing 10, the end cover 20 and the control board assembly 40 can be connected synchronously, effectively reducing the assembly process, simplifying the assembly process, improving the assembly efficiency, and making the connection structure between the parts simple, which is conducive to reducing the structural volume and reducing the cost.

[0094] Among them, vehicle 1000 can be a new energy vehicle. In some embodiments, the new energy vehicle can be a pure electric vehicle with a motor as the main driving force. In other embodiments, the new energy vehicle can also be a hybrid vehicle with an internal combustion engine and a motor as the main driving force. Regarding the internal combustion engine and motor mentioned in the above embodiments that provide driving power for the new energy vehicle, the internal combustion engine can use gasoline, diesel, hydrogen, etc. as fuel, and the way to provide electrical energy for the motor can use power batteries, hydrogen fuel cells, etc., which are not specifically limited here. It should be noted that this is only an exemplary description of the structure of new energy vehicles, etc., and it does not limit the scope of protection of the present invention.

[0095] The present application also proposes an assembly method of an electronic water pump 100. The electronic water pump 100 includes a housing 10, a control board assembly 40 and an end cover 20. The housing 10 is provided with a first welding rib 31, the end cover 20 is provided with a second welding rib 32, and the control board assembly 40 is provided with a connecting convex portion 41. For example, the electronic water pump 100 may be an electronic water pump 100 according to an embodiment of the first aspect of the present invention.

[0096] Assembly methods may include:

[0097] S1: placing the control board assembly 40 between the housing 10 and the end cover 20;

[0098] S2: hot-melt the first welding convex rib 31 and the second welding convex rib 32 to weld the first welding convex rib 31 and the second welding convex rib 32 , and at the same time, the welding overflow is connected to the connecting protrusion 41 .

[0099] It should be noted that the above S1 and S2 are not limitations on the order of operations. For example, the first welding rib 31 and the second welding rib 32 may be hot-melted first, and then the control board assembly 40 may be placed between the housing 10 and the end cover 20. For example, the control board assembly 40 may be pre-installed on one of the housing 10 and the end cover 20, and then the other of the housing 10 and the end cover 20 may be placed on the other side of the control board assembly 40 for press-fitting, etc.

[0100] In some specific embodiments, the control board assembly 40 can be first moved downward to be pre-installed on the housing 10; then the first welding rib 31 and the second welding rib 32 are hot-melt; and then the end cover 20 is pressed downward to the housing 10 to weld the first welding rib 31 to the second welding rib 32, and at the same time, the hot-melt material (i.e., welding overflow) flows to the connecting protrusion 41 to achieve connection with the connecting protrusion 41.

[0101] According to the assembly method of the electronic water pump 100 of the embodiment of the present invention, the housing 10 and the end cover 20 are welded by the first welding rib 31 and the second welding rib 32, and the welding overflow can be connected to the connecting protrusion 41 at the same time, so that the housing 10, the end cover 20 and the control board assembly 40 can be connected synchronously, effectively reducing the assembly process, simplifying the assembly process, improving the assembly efficiency, and making the connection structure between the parts simple, which is conducive to reducing the structural volume and reducing the cost.

[0102] The electronic water pump 100 and its assembly process according to a specific embodiment of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the following description is only exemplary and cannot be construed as limiting the invention.

[0103] like Figure 1-Figure 8 As shown, an electronic water pump 100 according to a specific embodiment of the present invention includes a housing 10 , an end cover 20 , a control board assembly 40 and a stator assembly 60 .

[0104] The end cover 20 can be covered on one axial end of the housing 10 to cooperate with the housing 10 to define the installation cavity 101. The housing 10 is provided with three positioning columns 11, an annular first welding rib 31, a first material stop rib 51 located radially inside the first welding rib 31, an overflow groove 33 located between the first material stop rib 51 and the first welding rib 31, and an overflow groove 33 located radially outside the first welding rib 31 on the side facing the end cover 20. The first material stop rib 51 is provided with a plurality of grooves 511 arranged at intervals along the circumferential direction. The stator assembly 60 is plastic-coated in the housing 10, and the housing 10 wraps one end of the stator terminal 61, the stator winding, the insulation frame and the stator core. The stator terminal 61 is penetrated in the housing 10 and the other end extends into the installation cavity 101.

[0105] A second annular welding rib 32 is disposed on one side of the end cover 20 facing the housing 10 , and a plurality of second material stop ribs 52 are disposed radially inwardly of the second welding rib 32 and spaced apart from each other in the circumferential direction. A connector terminal 21 is provided through the end cover 20 .

[0106] The outer periphery of the control board assembly 40 is provided with a connection protrusion 41 corresponding to the plurality of grooves 511 one by one, and a protrusion 411 is provided at the radial outer end of the connection protrusion 41. The control board assembly 40 is further provided with a first plug hole 43 and a second plug hole 44.

[0107] During the assembly of the electronic water pump 100, the control board assembly 40 can be first moved downward to be pre-installed on the housing 10. Specifically, the positioning column 11 of the housing 10 can be inserted into the positioning hole 42 of the control board assembly 40; the stator terminal 61 is inserted upward into the first plug hole 43 and connected to the circuit on the control board assembly 40 through soldering; the connecting protrusion 41 of the control board assembly 40 is inserted into the groove 511 of the first material stop rib 51 of the housing 10, so that the radial outer end of the connecting protrusion 41 extends into the overflow groove 33 on the radial inner side of the first welding protrusion rib 31.

[0108] The housing 10 and the end cover 20 are both injection molded, wherein the first welding rib 31 and the second welding rib 32 are also made of plastic. Therefore, the first welding rib 31 and the second welding rib 32 can be hot-melted by infrared heating. Then the end cover 20 is pressed downward to the housing 10. During this process, the connector terminal 21 is cold-pressed into the second jack 44, and an effective interference fit is used to achieve circuit connection with the control board assembly 40; at the same time, the second stop rib 52 extends into the groove 511 of the first stop rib 51; after the first welding rib 31 and the second welding rib 32 contact each other, keep applying pressure to the end cover 20 for a certain period of time, so that the first welding rib 31 and the second welding rib 32 are squeezed against each other, and the hot-melt material flows radially into the overflow grooves 33 on both sides, and flows to contact the connecting protrusion 41, and the welding overflow in the radial inner overflow groove 33 can press and fix the connecting protrusion 41, and the first stop rib 51 and the second stop rib 52 can prevent the welding overflow from entering the installation cavity 101. The welded structure 30 formed after cooling realizes the connection between the housing 10 and the end cover 20 , and is also connected to the connecting protrusion 41 , thereby achieving the fixation of the control board assembly 40 .

[0109] In the above embodiment, the housing 10, the end cover 20 and the control board assembly 40 of the electronic water pump 100 can be connected synchronously, and the connection structure is simple and compact. The electronic water pump 100 has the advantages of small size, light weight, simple production process and low cost.

[0110] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0111] 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 one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0112] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0113] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0114] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0115] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electronic water pump, characterized in that: include: A casing and an end cover, wherein the end cover is disposed at one axial end of the casing and cooperates with the casing to define a mounting cavity, the casing and the end cover are connected via a welding structure, the welding structure is welded by a first welding rib and a second welding rib, the first welding rib is disposed at an axial end of the casing, and the second welding rib is disposed at an axial end of the end cover; A control board assembly is arranged in the installation cavity, and a connecting protrusion is arranged on the periphery of the control board assembly, and the connecting protrusion is connected to the welding structure.

2. The electronic water pump according to claim 1, characterized in that: A material-blocking structure is provided at the radial inner side of the welding structure, and the connecting protrusion penetrates the material-blocking structure in the radial direction.

3. The electronic water pump according to claim 2, characterized in that: The material-blocking structure comprises a first material-blocking rib arranged on the housing, wherein the first material-blocking rib is provided with a groove sunken in a direction away from the end cover, the groove radially penetrates the first material-blocking rib, and the connecting protrusion is penetrated in the groove.

4. The electronic water pump according to claim 3, characterized in that: The axial dimension of the connecting protrusion is smaller than or equal to the axial dimension of the first material stop rib.

5. The electronic water pump according to claim 3, characterized in that: The material-blocking structure further comprises a second material-blocking rib arranged on the end cover, wherein the second material-blocking rib at least partially extends into the groove and abuts against or loosely fits with the connecting protrusion.

6. The electronic water pump according to claim 2, characterized in that: The outer periphery of the control board assembly is spaced apart from the material blocking structure by a set distance.

7. The electronic water pump according to claim 6, characterized in that: The set distance is greater than or equal to 3 mm.

8. The electronic water pump according to claim 1, characterized in that: Before the first welding rib is welded to the second welding rib, the end face and / or side surface of the radial outer end of the connecting protrusion is provided with a protrusion and / or a recess, and the outer surface of the protrusion and / or the inner surface of the recess is connected to the welding structure.

9. The electronic water pump according to claim 1, characterized in that: There are a plurality of connecting protrusions, and the plurality of connecting protrusions are arranged at intervals along the circumference of the control board assembly.

10. The electronic water pump according to claim 9, characterized in that: The welding structure extends in a ring shape along the circumference of the electronic water pump, and a plurality of connecting protrusions are connected to different areas of the welding structure; or, There are a plurality of welding structures, which are arranged at intervals along the radial direction of the electronic water pump, and the connecting protrusion is connected to at least the innermost circle of the welding structures.

11. The electronic water pump according to claim 1, characterized in that: Overflow grooves are respectively provided on both radial sides of the welding structure, and the connecting protrusion at least extends into the overflow groove on the radial inner side of the welding structure.

12. The electronic water pump according to any one of claims 1 to 11, characterized in that: The housing is provided with a plurality of positioning columns, and the control board assembly is provided with a positioning hole extending axially, the positioning column comprises a first column and a second column, the first column connects the second column and the housing, the outer diameter of the first column is greater than the outer diameter of the second column, the second column is passed through the positioning hole, and the control board assembly is supported by the first column.

13. The electronic water pump according to any one of claims 1 to 11, characterized in that: The control panel assembly is provided with a first jack and a second jack, a stator assembly is provided in the housing, a stator terminal of the stator assembly is inserted into the first jack, and the end cover is provided with a connector terminal, and the connector terminal is inserted into the second jack.

14. A thermal management system, characterized in that: It comprises an electronic water pump according to any one of claims 1-13.

15. A vehicle, characterized in that: Comprising a thermal management system according to claim 14.

16. A method for assembling an electronic water pump, characterized in that: The electronic water pump comprises a housing, a control panel assembly and an end cover, the housing is provided with a first welding convex rib, the end cover is provided with a second welding convex rib, the control panel assembly is provided with a connecting convex portion, and the assembly method comprises: placing the control panel assembly between the housing and the end cover; The first welding convex rib and the second welding convex rib are heat-melted to weld the first welding convex rib and the second welding convex rib, and the welding burr is connected to the connecting protrusion at the same time.

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