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CN-224204885-U - Electric pump

CN224204885UCN 224204885 UCN224204885 UCN 224204885UCN-224204885-U

Abstract

The application discloses an electric pump, which comprises a pump cover, a stator assembly and a pump shell, wherein the electric pump is provided with a pump cavity, the stator assembly is positioned in the pump cavity, the stator assembly comprises a stator winding and an isolation sleeve, the isolation sleeve is positioned in the pump cavity, the pump cavity comprises a first cavity and a second cavity, the isolation sleeve isolates the first cavity from the second cavity, the first cavity is not communicated with the second cavity, the stator winding is positioned in the second cavity, the stator winding comprises a stator core, the electric pump comprises a constraint part, the constraint part is fixedly connected with the stator core, the constraint part is positioned at the end part of the stator core along the axial direction of the electric pump, the stator core is sleeved on the periphery of the isolation sleeve along the radial direction of the electric pump, and the constraint part is in interference fit with the isolation sleeve. In this way, it is advantageous to increase the constraint on the spacer, and thus to reduce the vibrations and noise of the electric pump.

Inventors

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  • Request for anonymity
  • Request for anonymity
  • Request for anonymity
  • Request for anonymity

Assignees

  • 浙江三花汽车零部件有限公司

Dates

Publication Date
20260505
Application Date
20250331

Claims (10)

  1. 1. An electric pump (100) is characterized by comprising a pump cover (1) and a stator assembly (3), wherein the electric pump (100) is provided with a pump cavity (101), the stator assembly (3) is located in the pump cavity (101), the stator assembly (3) comprises a stator winding (31) and an isolation sleeve (32), the isolation sleeve (32) is located in the pump cavity (101), the pump cavity (101) comprises a first cavity (101 a) and a second cavity (101 b), the isolation sleeve (32) isolates the first cavity (101 a) from the second cavity (101 b), the first cavity (101 a) is not communicated with the second cavity (101 b), the stator winding (31) is located in the second cavity (101 b), the stator winding (31) comprises a stator core (311), the constraint part (316) is fixedly connected with the stator core (311), the constraint part (316) is arranged in the axial direction of the electric pump (100), and the constraint part (316) is arranged at the periphery of the stator core (311) along the radial direction of the isolation sleeve (32).
  2. 2. The electric pump (100) according to claim 1, wherein the stator core (311) includes a first end (3111) and a second end (3112) along an axial direction of the electric pump (100), the first end (3111) being close to the pump cover (1) relative to the second end (3112), the constraint (316) including a first constraint (317), the first constraint (317) being located at the second end (3112).
  3. 3. The electric pump (100) according to claim 2, wherein the stator winding (31) includes an insulating skeleton (313), the stator core (311) is fixedly connected with the insulating skeleton (313) or the stator core (311) is in an integral structure with the insulating skeleton (313), the restraining portion (316) is fixedly connected with the insulating skeleton (313), the restraining portion (316) protrudes out of an inner wall surface of the stator core (311) along a radial direction of the electric pump (100), and the restraining portion (316) is in interference fit with the spacer sleeve (32).
  4. 4. The electric pump (100) according to claim 3, wherein the insulating frame (313) includes a sub-frame (319), the sub-frame (319) is provided corresponding to a tooth portion of the stator core (311), the constraint portion (316) includes a sub-constraint portion (3161), the sub-constraint portion (3161) is provided corresponding to the sub-frame (319), the number of the sub-constraint portions (3161) is equal to the number of the sub-frames (319), and the sub-constraint portion (3161) and the sub-frame (319) are in an integral structure.
  5. 5. The electric pump (100) according to claim 4, wherein the sub-restraining portion (3161) extends in an axial direction of the electric pump (100), the sub-restraining portion (3161) includes a leading portion (3161 c) and a trailing portion (3161 d), the leading portion (3161 c) is close to the pump cover (1) with respect to the trailing portion (3161 d) in the axial direction of the electric pump (100), the leading portion (3161 c) abuts the second end portion (3112), and the leading portion (3161 c) is disposed away from a central axis of the electric pump (100) with respect to the trailing portion (3161 d) in a radial direction of the electric pump (100).
  6. 6. The electric pump (100) according to claim 4 or 5, wherein the sub-restraining portion (3161) includes an inner end portion (3161 a) and an outer end portion (3161 b) in a radial direction of the electric pump (100), the inner end portion (3161 a) being abutted with the spacer (32), and a width of the restraining portion (316) being in a decreasing trend from the outer end portion (3161 b) toward the inner end portion (3161 a).
  7. 7. The electric pump (100) according to claim 6, wherein the sub-restraining portion (3161) is recessed in a radially outward direction along a radial direction of the electric pump (100) with a recess (3161 e), the recess (3161 e) having a clearance with the spacer (32).
  8. 8. The electric pump (100) according to claim 7, wherein the recess (3161 e) comprises a groove (3161 f), the width of the groove (3161 f) being in a decreasing trend in a radial direction of the electric pump (100) from the inner end (3161 a) to the outer end (3161 b).
  9. 9. The electric pump (100) according to any one of claims 2-8, wherein the spacer sleeve (32) comprises a barrel portion (323), one end of the barrel portion (323) being an open end (322) and the other end of the barrel portion (323) being a tip (321) in an axial direction of the electric pump (100), the open end (322) being close to the pump cover (1) relative to the tip (321), the tip (321) being in interference fit with the first constraint portion (317).
  10. 10. The electric pump (100) of claim 1, wherein the stator core (311) includes a first end (3111) and a second end (3112), the first end (3111) being proximate to the pump cover (1) relative to the second end (3112) along an axial direction of the electric pump (100), the constraint (316) including a first constraint (317) and a second constraint (318), the first constraint (317) being located at the second end (3112), the second constraint (318) being located at the first end (3111), the first constraint (317) and the second constraint (318) both being in interference fit with the spacer (32).

Description

Electric pump Technical Field The application relates to the technical field of thermal management, in particular to an electric pump for vehicles or energy storage or commercial use. Background The electric pump comprises a stator winding and an isolation sleeve, wherein the stator winding comprises a stator core, the isolation sleeve is in interference fit with the stator core, the length of the isolation sleeve in the axial direction is larger than that of the stator core at present, the constraint of the stator on the isolation sleeve is insufficient, and vibration of the isolation sleeve in the working process of the water pump is increased, so that vibration and noise of the electric pump are increased. Disclosure of utility model The application aims to provide an electric pump which is beneficial to increasing the restraint on a spacer sleeve, thereby being beneficial to reducing the vibration and noise of the electric pump. In order to achieve the above purpose, a technical scheme of the application is as follows: The utility model provides an electric pump, including pump cover, stator module and pump case, the electric pump has the pump inner chamber, stator module is located the pump inner chamber, stator module includes stator winding and spacer sleeve, the spacer sleeve is located the pump inner chamber, the pump inner chamber includes first chamber and second chamber, first chamber and second chamber are kept apart to the spacer sleeve, first chamber and second chamber do not communicate, stator winding is located the second chamber, stator winding includes stator core, the electric pump includes restraint, restraint and stator core fixed connection, along the axial direction of electric pump, restraint sets up the tip at stator core, along the radial direction of electric pump, the spacer sleeve periphery is located to the stator core cover, restraint and spacer sleeve interference fit. The electric pump provided by the technical scheme of the application comprises the stator core, the isolation sleeve and the constraint part, wherein the stator core is fixedly connected with the constraint part, the constraint part is positioned at the end part of the stator core along the axial direction of the electric pump, and the constraint part is positioned at the periphery of the isolation sleeve along the radial direction of the electric pump. Drawings FIG. 1 is a schematic perspective view of one embodiment of an electric pump of the present application; FIG. 2 is a schematic cross-sectional view of the motor pump of FIG. 1; FIG. 3 is a schematic perspective view of the electric pump of FIG. 1 with the pump cover removed; FIG. 4 is a schematic cross-sectional view of the motor pump of FIG. 3; FIG. 5 is a schematic perspective view of the spacer sleeve of the electric pump of FIG. 1; FIG. 6 is a schematic perspective view of the stator assembly of FIG. 1; FIG. 7 is a schematic perspective view of the stator assembly of FIG. 1 from another perspective; FIG. 8 is a schematic cross-sectional view of the stator assembly of FIG. 5 in a perspective configuration; fig. 9 is a schematic perspective view of the stator winding of fig. 7; fig. 10 is a schematic perspective view of the insulating skeleton of fig. 9; Fig. 11 is a schematic perspective view of the second insulating frame of fig. 10; FIG. 12 is an enlarged view of a portion of FIG. 10 at A; FIG. 13 is a schematic top view of the insulating framework of FIG. 10; fig. 14 is a partial enlarged view at B in fig. 13; Fig. 15 is a schematic front view of the insulating skeleton of fig. 10; Fig. 16 is a schematic perspective view of a second insulating frame in another embodiment of the electric pump of the present application; FIG. 17 is a schematic diagram showing the structure of a second insulating frame in another embodiment of the electric pump of the present application; in the accompanying drawings: 100. An electric pump; 1. pump cover, 11, inlet part, 12, outlet part, 13, main body part; 2. A rotating assembly, a rotor assembly, a vane wheel assembly and a vane wheel assembly; 3. a stator assembly; 31. A stator winding; 311. Stator core 3111, first end, 3112, second end, 312, winding, 313, insulating frame, 314, first insulating frame; 315. The second insulation frame, 3151, a second main body part, 3152, a second winding part, 3153, a second blocking part, 3154, a connection limiting part, 3154a, a pin, 3154b and a positioning column; 316. A restraining part, 3161, a sub-restraining part, 3161a, an inner end part, 3161b, an outer end part, 3161c, a head part, 3161d, a tail part, 3161e, a recess, 3161f, a groove, 3162, a first sub-part, 3163, a second sub-part, 317, a first restraining part, 318, a second restraining part, 319, a sub-skeleton; 32. Spacer 321, terminal end, 322, open end, 323, barrel; 33. A pump shaft; 4. A control assembly; 5. The pump casing, 51, the limiting piece, 52, the first opening end; 101. pump lumen, 101a, first lumen