Electric pump

Abstract

According to the electric pump, at least part of a stator assembly is located on one axial side of a partition part, at least part of a magnetic rotor assembly is located on the other axial side of the partition part, so that the partition part separates the stator assembly and the magnetic rotor assembly, an opening of a second groove is located in a first groove, and at least part of the partition part is located in the first groove. At least part of the magnetic rotor assembly is located in the second groove, so that the matching structure of the first shell part, the separation part and the magnetic rotor assembly is more compact, the first shell part and the separation part are closer to the magnetic rotor assembly, and then the size of the electric pump is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to fluid control technology, in particular to an electric pump. BACKGROUND

[0002] The related electric pump includes a motor and a pump shell, the motor includes a stator assembly and a magnetic rotor assembly, part of the pump shell is located between the stator assembly and the magnetic rotor assembly, so that the pump shell is arranged to separate the stator assembly and the magnetic rotor assembly, how to design the motor and the pump shell, and then reduce the size of the electric pump, is a technical problem that needs to be considered in the design process of the electric pump. SUMMARY

[0003] The purpose of the present application is to provide an electric pump, which is helpful to reduce the size of the electric pump.

[0004] To achieve the above purpose, the technical scheme provided by the present application is as follows:

[0005] An electric pump includes a motor, a first shell part and a separation part, the motor includes a stator assembly and a magnetic rotor assembly, at least part of the stator assembly is located on one side of the separation part in the axial direction, and at least part of the magnetic rotor assembly is located on the other side of the separation part in the axial direction; the first shell part has a first slot, at least part of the separation part is located in the first slot, the separation part is sealingly arranged with the inner wall forming the first slot, the separation part has a second slot, the opening of the second slot is located in the first slot, and at least part of the magnetic rotor assembly is located in the second slot.

[0006] In the electric pump provided by the present application, at least part of the stator assembly is located on one side of the separation part in the axial direction, and at least part of the magnetic rotor assembly is located on the other side of the separation part in the axial direction, so that the separation part is arranged to separate the stator assembly and the magnetic rotor assembly, the opening of the second slot is located in the first slot, at least part of the separation part is located in the first slot, and at least part of the magnetic rotor assembly is located in the second slot, so that the cooperation structure of the first shell part, the separation part and the magnetic rotor assembly is more compact, which is helpful to make the first shell part and the separation part closer to the magnetic rotor assembly, and then is helpful to reduce the size of the electric pump. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 A perspective structural schematic view of an electric pump provided by an embodiment of the present application is shown in the figure;

[0008] Figure 2 For Figure 1 A perspective structural schematic view of another view of the electric pump is shown in the figure;

[0009] Figure 3 For Figure 1 A sectional structural schematic view of the electric pump is shown in the figure;

[0010] Figure 4 ForFigure 3 Partial enlarged structural schematic view at "A";

[0011] Figure 5 For Figure 3 Schematic view of a sectional structure of the pump housing;

[0012] Figure 6 For Figure 5 Schematic view of a first housing part;

[0013] Figure 7 For Figure 5 Schematic view of a partition part;

[0014] Figure 8 For Figure 3 Schematic view of a magnetic rotor assembly;

[0015] Figure 9 For Figure 3 Schematic view of a plug-in assembly, a stator assembly and a third housing;

[0016] Figure 10 For Figure 9 Schematic view of a stator assembly;

[0017] In the figure: 100 - electric pump, 110 - pump housing, 120 - magnetic rotor assembly, 130 - stator assembly, 140 - pump shaft assembly, 150 - plug-in assembly, 160 - sealing part, 111 - first housing part, 112 - partition part, 113 - second housing part, 1111 - first groove, 1112 - first accommodating part, 1113 - first avoiding groove, 1114 - first end wall, 1115 - first flow passage opening, 1116 - second flow passage opening, 1111a - first small-diameter section, 1111b - first large-diameter section, 1112a - first accommodating cavity, 1121 - second groove, 1122 - second accommodating part, 1124 - second avoiding groove, 1125 - second end wall, 1122a - second accommodating cavity, 1131 - third groove, 1132 - interface part, 1132a - interface cavity, 121 - injection-molded part, 122 - magnet, 123 - rotor core, 1211 - impeller, 1212 - accommodating hole, 1212a - second small-diameter section, 1212b - second large-diameter section, 131 - winding, 132 - stator core, 133 - seating hole. DETAILED DESCRIPTION

[0018] The application will be further described below in connection with the accompanying drawings and specific embodiments:

[0019] In the related art, an electric pump includes a motor and a pump shell, the motor includes a stator assembly and a magnetic rotor assembly, and part of the pump shell is located between the stator assembly and the magnetic rotor assembly, so that the pump shell is arranged to separate the stator assembly and the magnetic rotor assembly. How to design the motor and the pump shell to reduce the size of the electric pump is a technical problem that needs to be considered in the design process of the electric pump.

[0020] Based on the above technical problem, an embodiment of the present application provides an electric pump 100, which includes a motor, a first shell part 111 and a separation part 112, the motor includes a stator assembly 130 and a magnetic rotor assembly 120, at least part of the stator assembly 130 is located on one side of the separation part 112 in the axial direction, and at least part of the magnetic rotor assembly 120 is located on the other side of the separation part 112 in the axial direction; the first shell part 111 has a first groove 1111, at least part of the separation part 112 is located in the first groove 1111, the separation part 112 is sealingly arranged with the inner wall forming the first groove 1111, the separation part 112 has a second groove 1121, the opening of the second groove 1121 is located in the first groove 1111, and at least part of the magnetic rotor assembly 120 is located in the second groove 1121.

[0021] In the electric pump 100, at least part of the stator assembly 130 is located on one side of the separation part 112 in the axial direction, and at least part of the magnetic rotor assembly 120 is located on the other side of the separation part 112 in the axial direction, so that the separation part 112 is arranged to separate the stator assembly 130 and the magnetic rotor assembly 120, the opening of the second groove 1121 is located in the first groove 1111, at least part of the separation part 112 is located in the first groove 1111, and at least part of the magnetic rotor assembly 120 is located in the second groove 1121, so that the cooperation structure of the first shell part 111, the separation part 112 and the magnetic rotor assembly 120 is more compact, which is beneficial to the first shell part 111 and the separation part 112 being closer to the magnetic rotor assembly 120, and further beneficial to reducing the size of the electric pump 100.

[0022] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person of ordinary skill in the art without creative labor are within the scope of protection of the present application. In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0023] The technical scheme of the present application will be described below in combination with Figures 1 to 10 The technical scheme of the present application will be described below in combination with

[0024] In a possible implementation, at least part of the stator assembly 130 is located on one axial side of the partition portion 112, and at least part of the magnetic rotor assembly 120 is located on the other axial side of the partition portion 112; the first shell portion 111 has a first groove 1111, at least part of the partition portion 112 is located in the first groove 1111, the partition portion 112 is sealingly arranged with the inner wall forming the first groove 1111, the partition portion 112 has a second groove 1121, the second groove 1121 communicates with the first groove 1111, the opening of the second groove 1121 is located in the first groove 1111, and at least part of the magnetic rotor assembly 120 is located in the second groove 1121.

[0025] For the convenience of understanding, as shown in Figure 3 The magnetic rotor assembly 120 is located on one axial side of the stator assembly 130, and the magnetic rotor assembly 120 and the stator assembly 130 constitute an axial flux motor, which has a more compact structure and is beneficial to reduce the size of the electric pump 100.

[0026] The partition portion 112 is substantially disc-shaped, the stator assembly 130 is located on one axial side of the partition portion 112, and the magnetic rotor assembly 120 is located on the other axial side of the partition portion 112, so that the partition portion 112 is arranged to separate the stator assembly 130 and the magnetic rotor assembly 120, which is beneficial to reduce the mutual interference between the magnetic rotor assembly 120 and the stator assembly 130.

[0027] The first shell part 111 and the partition part 112 are sealingly arranged, the outer wall of the first shell part 111 is sealingly fitted in the inner wall forming the first groove 1111, and the partition part 112 is located in the first groove 1111. The fitting structure of the first shell part 111 and the partition part 112 is more compact, which is conducive to reducing the size of the pump shell 110. Part of the magnetic rotor assembly 120 is located in the first groove 1111, and another part of the magnetic rotor assembly 120 is located in the second groove 1121, so that the fitting structure of the first shell part 111, the partition part 112 and the magnetic rotor assembly 120 is more compact, which is conducive to the first shell part 111 and the partition part 112 being closer to the magnetic rotor assembly 120, thereby facilitating the reduction of the size of the electric pump 100. The axial direction of the first groove 1111 is consistent with the axial direction of the partition part 112. In the process of fitting the first shell part 111, the partition part 112 and the magnetic rotor assembly 120, the partition part 112 can slide relative to the first shell part 111 along the axial direction of the electric pump 100. In this way, the first shell part 111 and the partition part 112 can be closer to the magnetic rotor assembly 120, thereby facilitating the reduction of the size of the electric pump 100, especially the axial size of the electric pump 100.

[0028] In a possible implementation, the first groove 1111 includes a first small-diameter section 1111a and a first large-diameter section 1111b, the first small-diameter section 1111a communicates with the second groove 1121, the magnetic rotor assembly 120 is located in the first small-diameter section 1111a and the second groove 1121, and at least part of the partition part 112 is located in the first large-diameter section 1111b.

[0029] For the convenience of understanding, as shown in Figure 3 and Figure 8 , the magnetic rotor assembly 120 is generally in the shape of a cylinder, the inner diameter of the first small-diameter section 1111a is smaller than the inner diameter of the first large-diameter section 1111b, the magnetic rotor assembly 120 is partially fitted in the second groove 1121, and the magnetic rotor assembly 120 is located in the first small-diameter section 1111a and the second groove 1121. Part of the magnetic rotor assembly 120 is located in the first small-diameter section 1111a, and another part of the magnetic rotor assembly 120 is located in the second groove 1121. The outer diameter of the magnetic rotor assembly 120 is smaller than the outer diameter of the partition part 112, the partition part 112 is fitted in the first large-diameter section 1111b, the opening of the second groove 1121 is located in the first large-diameter section 1111b, and the fitting structure of the first shell part 111, the partition part 112 and the magnetic rotor assembly 120 is more fitted, which is more conducive to reducing the size of the electric pump 100.

[0030] Further, the outer peripheral wall of the partition portion 112 and the inner peripheral wall forming the first large-diameter section 1111b are sealingly arranged, the outer peripheral wall of the partition portion 112 extends along the axial direction of the electric pump 100, and the inner peripheral wall of the first large-diameter section 1111b extends along the axial direction of the electric pump 100, so that the sealing engagement area of the first housing portion 111 and the partition portion 112 is increased, thereby facilitating improvement of the sealing performance of the first housing portion 111 and the partition portion 112.

[0031] Further, the end wall of the partition portion 112 and the bottom wall forming the first large-diameter section 1111b are sealingly arranged, so that the sealing engagement area of the first housing portion 111 and the partition portion 112 is further increased, thereby facilitating improvement of the sealing performance of the first housing portion 111 and the partition portion 112.

[0032] In one possible implementation, the magnetic rotor assembly 120 includes an impeller 1211 and magnets 122, at least part of the magnets 122 are located on the axial side of the impeller 1211 close to the stator assembly 130, the inner diameter of the second groove 1121 is smaller than the inner diameter of the first small-diameter section 1111a, at least part of the impeller 1211 is located in the first small-diameter section 1111a, the outer side wall of the impeller 1211 is arranged in a gap with the inner side wall of the first small-diameter section 1111a, and at least part of the magnets 122 are located in the second groove 1121.

[0033] For the convenience of understanding, as shown in Figure 3 and Figure 8 , the magnetic rotor assembly 120 includes an injection molding portion 121, the magnets 122 are substantially in the shape of a fan-shaped plate, the injection molding portion 121 is injection molded with the magnets 122 as inserts, and the material for manufacturing the injection molding portion 121 includes but is not limited to resin. The injection molding portion 121 includes the above-mentioned impeller 1211, which is beneficial to simplify the injection molding structure of the magnetic rotor assembly 120. The magnets 122 are closer to the stator assembly 130 relative to the impeller 1211, so that the alternating magnetic field strength of the stator assembly 130 at the position of the magnets 122 is larger, which is beneficial to improve the driving performance of the electric pump 100. The impeller 1211 is located in the first small-diameter section 1111a, the magnets 122 are located in the second groove 1121, the gap between the outer side wall of the impeller 1211 and the inner side wall forming the first small-diameter section 1111a is large, so that the flow passage cross-sectional area between the impeller 1211 and the inner wall of the first small-diameter section 1111a is larger, which is more beneficial to the impeller 1211 to drive the fluid to flow through the first small-diameter section 1111a; and the gap between the corresponding part of the injection molding portion 121 and the inner wall forming the second groove 1121 is small, so that the structure of the magnets 122 and the partition portion 112 becomes compact, which is more beneficial to reduce the size of the electric pump 100.

[0034] In a possible implementation, the magnetic rotor assembly 120 includes a rotor core 123, at least part of the impeller 1211 is located at one axial side of the rotor core 123, and at least part of the magnet 122 is located at the other axial side of the impeller 1211; the magnet 122 is located in the second groove 1121, and at least part of the rotor core 123 is located in the second groove 1121.

[0035] For ease of understanding, as shown in Figure 3 , the injection molding part 121 is also injection molded with the rotor core 123 as an insert, the rotor core 123 is substantially in the shape of a ring, the magnet 122 is limitedly fitted in the rotor core 123, the impeller 1211 is located at one axial side of the rotor core 123, and the magnet 122 is located at the other axial side of the rotor core 123. The rotor core 123 and the magnet 122 are located in the second groove 1121, so that the structure of the rotor core 123, the magnet 122 and the separation part 112 becomes compact, which is more conducive to reducing the size of the electric pump 100.

[0036] In a possible implementation, the magnet 122 is at least two, the at least two magnets 122 are arranged in sequence in the axial direction of the rotor core 123, the at least two magnets 122 are arranged in a circumferential structure, and the impeller 1211, the rotor core 123 and the at least two magnets 122 are arranged coaxially in the circumferential structure.

[0037] In a possible implementation, the first housing part 111 has a first flow passage opening 1115 and a second flow passage opening 1116, the first flow passage opening 1115 and the second flow passage opening 1116 communicate with the first small-diameter section 1111a, at least part of the first flow passage opening 1115 is located at one axial side of the impeller 1211, and at least part of the second flow passage opening 1116 is located at the radial outer side of the impeller 1211.

[0038] For ease of understanding, as shown in Figure 3 and Figure 5 , the upper opening of the impeller 1211 is located at one axial side of the impeller 1211, the side opening of the impeller 1211 is located at the radial outer side of the impeller, the first flow passage opening 1115 is arranged correspondingly at the upper opening of the impeller 1211, and the second flow passage opening 1116 is arranged correspondingly at the side opening of the impeller 1211; when the impeller 1211 rotates, the fluid can be driven to flow through the first flow passage opening 1115, the first small-diameter section 1111a and the second flow passage opening 1116.

[0039] In a possible implementation, the electric pump 100 comprises a pump shaft assembly 140, the magnetic rotor assembly 120 has a receiving hole 1212, the pump shaft assembly 140 is limitingly fitted on the inner wall forming the receiving hole 1212, at least part of the pump shaft assembly 140 is located in the receiving hole 1212, the pump shaft assembly 140 is limitingly fitted on the first housing part 111 and the partition part 112, at least part of the first housing part 111 is located in the receiving hole 1212, and at least part of the partition part 112 is located in the receiving hole 1212.

[0040] For easy understanding, as shown in Figure 3 and Figure 8 , the receiving hole 1212 is formed in the injection molding part 121, the pump shaft assembly 140 is limitingly fitted on the injection molding part 121, one end of the pump shaft assembly 140 is limitingly fitted on the first housing part 111, the other end of the pump shaft assembly 140 is limitingly fitted on the partition part 112, the pump shaft assembly 140 is located between the first housing part 111 and the partition part 112, and the magnetic rotor assembly 120 can rotate relative to the pump housing 110 about the pump shaft assembly 140. The magnetic rotor assembly 120 is gap-set with the first housing part 111 and the partition part 112, and the magnetic rotor assembly 120 does not contact the first housing part 111 and the partition part 112, thereby avoiding friction or collision between the magnetic rotor assembly 120 and the first housing part 111 and the partition part 112, and further facilitating to reduce the deformation and wear of the magnetic rotor assembly 120, the first housing part 111 and the partition part 112.

[0041] The pump shaft assembly 140 is located in the receiving hole 1212, part of the first housing part 111 is also located in the first receiving hole 1212, and part of the partition part 112 is also located in the second receiving hole 1212, so that the cooperation structure of the pump shaft assembly 140, the first housing part 111, the partition part 112 and the magnetic rotor assembly 120 becomes compact, which facilitates the first housing part 111 and the partition part 112 to be closer to the magnetic rotor assembly 120, and further facilitates to reduce the size of the electric pump 100, especially the axial size of the electric pump 100.

[0042] In a possible implementation, the first housing part 111 comprises a first receiving part 1112, the first receiving part 1112 is located in the first groove 1111, part of the pump shaft assembly 140 is located in a first receiving cavity 1112a of the first receiving part 1112, and at least part of the first receiving part 1112 is located in the receiving hole 1212; the partition part 112 comprises a second receiving part 1122, the second receiving part 1122 is located in the second groove 1121, part of the pump shaft assembly 140 is located in a second receiving cavity 1122a of the second receiving part 1122, and at least part of the second receiving part 1122 is located in the receiving hole 1212.

[0043] For easy understanding, as shown in Figure 3As shown in FIG. 1, one end of the pump shaft assembly 140 is located in the first accommodating cavity 1112a, and the one end of the pump shaft assembly 140 is limitedly fitted to the inner wall of the first accommodating cavity 1112a. The other end of the pump shaft assembly 140 is located in the second accommodating cavity 1122a, and the other end of the pump shaft assembly 140 is limitedly fitted to the inner wall of the second accommodating cavity 1122a. The first accommodating portion 1112 is located in the first small-diameter section 1111a, and the second accommodating portion 1122 is located in the second groove 1121. The first accommodating portion 1112 extends from the axial one side of the accommodating hole 1212 to the accommodating hole 1212, and the second accommodating portion 1122 extends from the axial other side of the accommodating hole 1212 to the accommodating hole 1212. The fitting structure of the first housing portion 111, the partition portion 112, and the magnetic rotor assembly 120 is more compact, which is more conducive to reducing the size of the electric pump 100.

[0044] In a possible implementation, the accommodating hole 1212 includes a second small-diameter section 1212a and a second large-diameter section 1212b. The pump shaft assembly 140 is limitedly fitted to the inner wall of the second small-diameter section 1212a, and at least part of the second accommodating portion 1122 is located in the second large-diameter section 1212b.

[0045] For ease of understanding, as shown in FIG. 1, Figure 3 and Figure 8 As shown in FIG. 1, the second large-diameter section 1212b is located on the axial side of the second small-diameter section 1212a close to the stator assembly 130. Part of the pump shaft assembly 140 is located in the second small-diameter section 1212a, and the second accommodating portion 1122 is located in the second large-diameter section 1212b. The inner diameter of the second large-diameter section 1212b is smaller than that of the second small-diameter section 1212a, so that the amount of plastic of the injection molding portion 121 is reduced, which is conducive to the lightweight of the magnetic rotor assembly 120. Moreover, the outer diameter of the second accommodating portion 1122 is greater than that of the pump shaft assembly 140, so that the size of the second accommodating portion 1122 can be larger, which is conducive to improving the bearing capacity of the partition portion 112 to the pump shaft assembly 140.

[0046] In a possible implementation, the partition portion 112 and the first housing portion 111 are sealingly arranged through the sealing portion 160. At least part of the sealing portion 160 is located in the inner wall of the first groove 1111. At least one of the first housing portion 111 and the partition portion 112 has an avoiding groove, and at least part of the sealing portion 160 is located in the avoiding groove.

[0047] For ease of understanding, as shown in FIG. 1, Figure 3 and Figure 4As shown, the sealing portion 160 is in one piece with the first housing portion 111 and the partition portion 112, the first housing portion 111 and the partition portion 112 are welded to form the sealing portion 160, so that the sealing portion 160 is more closely matched with the first housing portion 111 and the partition portion 112, which is conducive to improving the sealing performance of the first housing portion 111 and the partition portion 112. There are two clearance grooves, the first clearance groove 1113 and the second clearance groove 1124 are in communication, the first clearance groove 1113 is formed in the first housing portion 111, and the second clearance groove 1124 is formed in the partition portion 112. The sealing portion 160 is located in the first clearance groove 1113 and the second clearance groove 1124, so that the sealing portion 160 does not protrude from the first housing portion 111 and the partition portion 112, and the matching structure of the electric pump 100 is more reasonable.

[0048] In a possible implementation, the first housing portion 111 includes a first end wall 1114, and the partition portion 112 includes a second end wall 1125. At least part of the clearance groove is located between the first end wall 1114 and the second end wall 1125.

[0049] For ease of understanding, as shown in Figures 5 to 7 The first end wall 1114 is located on one side of the first slot 1111 in the axial direction, and the second end wall 1125 is substantially flush with the first end wall 1114. The first clearance groove 1113 is located in the first end wall 1114, and the second clearance groove 1124 is located in the second end wall 1125, so that the sealing portion 160 is more easily formed in the first housing portion 111 and the partition portion 112, which is conducive to improving the efficiency of the matching operation.

[0050] In a possible implementation, at least part of the stator assembly 130 is located in the partition portion 112.

[0051] For ease of understanding, as shown in Figure 3 , Figure 5 and Figure 9 The stator assembly 130 is limited and matched in the partition portion 112, and one end wall of the stator assembly 130 is located in the second end wall 1125. In this way, the stator assembly 130 is closer to the partition portion 112, which is more conducive to reducing the size of the electric pump 100, and also conducive to heat dissipation of the fluid flowing through the second slot 1121 to the stator assembly 130.

[0052] In a possible implementation, the electric pump 100 includes a second housing portion 113, the second housing portion 113 has a third slot 1131, at least part of the stator assembly 130 is located in the third slot 1131, at least part of the partition portion 112 is located on one side of an opening of the third slot 1131, and the second housing portion 113 is limited and matched in at least one of the first housing portion 111 and the partition portion 112.

[0053] For ease of understanding, asFigure 3 、 Figure 5 and Figure 9 As shown in

[0054] In a possible implementation, the stator assembly 130 has a locating hole 133, the second housing part 113 includes an interface part 1132, the connector assembly 150 electrically connects the stator assembly 130, at least part of the interface part 1132 is located in the locating hole 133, and at least part of the connector assembly 150 is located in an interface cavity 1132a of the interface part 1132.

[0055] For ease of understanding, as shown in Figure 3 、 Figure 5 、 Figure 9 and Figure 10 As shown in

[0056] In a possible implementation, the stator assembly 130 includes a winding 131 and a stator core 132, the height direction of the stator core 132 is consistent with the axial direction of the electric pump 100, and the winding 131 is wound around the stator core 132 in the height direction of the stator core 132.

[0057] For ease of understanding, as shown in Figure 10 As shown in

[0058] The windings 131 are at least three, and the at least three windings 131 can be divided into a U-phase winding 131, a V-phase winding 131 and a W-phase winding 131, the number of the stator cores 132 is consistent with the number of the windings 131, and the at least three windings 131 are wound around the at least three stator cores 132.

[0059] The embodiment also provides a heat management device, which comprises a wire harness and the electric pump 100, the wire harness is limited to the interface part 1132 and the connector assembly 150, and part of the wire harness is located in the interface cavity 1132a.

[0060] Those skilled in the art should understand that each technical feature of the above-described embodiments can be combined arbitrarily, and in order to make the description concise, each technical feature in the above-described embodiments is not described in all possible combinations, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present disclosure.

[0061] The above description of the disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the technical solutions shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric pump comprising a motor, a first housing part (111) and a partition part (112), the motor comprising a stator assembly (130) and a magnetic rotor assembly (120), at least part of the stator assembly (130) being located on one axial side of the partition part (112), at least part of the magnetic rotor assembly (120) being located on the other axial side of the partition part (112), the first housing part (111) having a first groove (1111), at least part of the partition part (112) being located in the first groove (1111), the partition part (112) being sealingly arranged with an inner wall forming the first groove (1111), the partition part (112) having a second groove (1121), an opening of the second groove being located in the first groove, at least part of the magnetic rotor assembly (120) being located in the second groove (1121).

2. The electric pump according to claim 1, characterized in that, The first groove (1111) comprises a first small-diameter section (1111a) and a first large-diameter section (1111b), the first small-diameter section (1111a) communicating with the second groove (1121), the magnetic rotor assembly (120) being located in the first small-diameter section (1111a) and the second groove (1121), at least part of the partition part (112) being located in the first large-diameter section (1111b).

3. The electric pump according to claim 2, characterized in that, The magnetic rotor assembly (120) comprises an impeller (1211) and magnets (122), at least part of the magnets (122) being located on one axial side of the impeller (1211) close to the stator assembly (130), an inner diameter of the second groove (1121) being smaller than an inner diameter of the first small-diameter section (1111a), at least part of the impeller (1211) being located in the first small-diameter section (1111a), at least part of the magnets (122) being located in the second groove (1121).

4. The electric pump according to claim 3, characterized in that, The magnetic rotor assembly (120) comprises a rotor core (123), at least part of the impeller (1211) being located on one axial side of the rotor core (123), at least part of the magnets (122) being located on the other axial side of the rotor core (123), the magnets (122) being located in the second groove (1121), at least part of the rotor core (123) being located in the second groove (1121).

5. The electric pump according to claim 3 or 4, characterized in that, The first housing part (111) has a first flow passage opening (1115) and a second flow passage opening (1116), the first flow passage opening (1115) and the second flow passage opening (1116) communicating with the first small-diameter section (1111a), the first flow passage opening (1115) being arranged in correspondence with an upper opening of the impeller (1211), the second flow passage opening (1116) being arranged in correspondence with a side opening of the impeller (1211).

6. The electric pump according to any one of claims 1 to 5, characterized in that, The electric pump (100) comprises a pump shaft assembly (140), the magnetic rotor assembly (120) is capable of rotating relative to the first shell (111), the partition (112) through the pump shaft assembly (140), one end of the pump shaft assembly (140) is limitedly matched with the first shell (111), and the other end of the pump shaft assembly (140) is limitedly matched with the partition (112).

7. The electric pump according to claim 6, characterized in that, The first shell part (111) comprises a first containing part (1112), one end of the pump shaft assembly (140) is located in a first containing cavity (1112a) of the first containing part (1112), the partition (112) comprises a second containing part (1122), the other end of the pump shaft assembly (140) is located in a second containing cavity (1122a) of the second containing part (1122), and the magnetic rotor assembly (120) has a containing hole (1212), at least part of the first containing part (1112) is located in the containing hole (1212), and at least part of the second containing part (1122) is located in the containing hole (1212).

8. The electric pump according to any one of claims 1 to 7, characterized in that, The first shell part (111) and the partition (112) are sealingly arranged through a sealing part (160), at least part of the sealing part (160) is located on an inner wall forming the first groove (1111), and at least one of the first shell part (111) and the partition (112) has a position-avoiding groove (1113, 1124), and at least part of the sealing part (160) is located in the position-avoiding groove (1113, 1124).

9. The electric pump according to claim 8, characterized in that, The first shell part (111) comprises a first end wall (1114), the partition (112) comprises a second end wall (1125), and at least part of the position-avoiding groove (1113, 1124) is located in the first end wall (1114) and the second end wall (1125).

10. The electric pump according to claim 9, characterized in that, The electric pump (100) comprises a second shell part (113), the second shell part (113) has a third groove (1131), at least part of the stator assembly (130) is located in the third groove (1131), and the second shell part (113) is limitedly matched in at least one of the first end wall (1114) and the second end wall (1125).

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