CN201726253U - Electrocar motor cooling structure - Google Patents

Abstract

The utility model discloses an electrocar motor cooling structure, wherein a driving disc of an electrocar motor is sheathed at the periphery of one end of a shaft in a motive seal rotating way; one end of a shell is sheathed at the periphery of one end of the driving disc in a motive seal rotating way; a rotor is fixedly connected with the other end of the driving disc; a stator core coil winding is positioned in the inner circumferential surface of the rotor and fixedly arranged on a support plate; the inner side in the peripheral direction of the support plate is hermetically and fixedly arranged on the shaft; one end of the outer side in the peripheral direction of the support plate is hermetically and fixedly connected with the other end of the shell; the shaft, the driving disc, the support plate and the shell form a ringlike sealed space; and the rotor and the stator core coil winding are positioned in the sealed space. The other end of the support plate is directly contacted with the atmosphere to directly dissipate the heat generated by the stator core coil winding to the atmosphere with high heat dissipation speed so as to fast reduce the temperature of the stator core coil winding, reduce motor power loss and improve motor efficiency.

Description

Electric vehicle motor cooling structure

technical field

The utility model relates to a motor cooling structure, in particular to an electric vehicle motor cooling structure.

Background technique

The iron core coil winding and support plate of the current electric vehicle motor stator are placed in a sealed space, because they cannot directly contact with the atmosphere, the heat is emitted indirectly, the heat dissipation is slow, and the temperature of the iron core coil winding of the stator rises , increase the power loss of the motor and reduce the efficiency of the motor. In addition, the wiring harness of the motor is led out through the shaft hole of the motor, the production process is poor, and it is prone to short circuit problems due to poor insulation.

Contents of the invention

In order to make up for the above deficiencies, the utility model provides an electric vehicle motor cooling structure, the electric vehicle motor cooling structure is simple, the heat transfer is fast, and the cooling is sufficient.

The technical scheme adopted by the utility model in order to solve the technical problems is: a cooling structure for electric vehicle motors, electric vehicle motors include shafts, transmission discs, casings, stator core coil windings, bracket plates and rotors, and the transmission discs rotate The sealing and rotating sleeve is installed on the outer circumference of one end of the shaft, and the dynamic sealing and rotating sleeve on one end of the casing is installed on the outer circumference of one end of the transmission disc. The rotor is fixedly connected with the other end of the transmission disc. On the support plate, the inner side of the support plate in the circumferential direction is sealed and fixed on the shaft, and the outer end of the support plate in the circumferential direction is sealed and fixed with the other end of the casing. The shaft, the transmission disc, the support plate and the casing together form an annular sealed space. The rotor and The stator core coil windings are all located in this sealed space, and the other end of the support plate of the stator core coil windings is in direct contact with the atmosphere, dissipating the heat generated by the stator core coil windings directly into the atmosphere, the heat dissipation speed is fast, and the stator can be quickly lowered. The temperature of the iron core coil winding can reduce the power loss of the motor and improve the efficiency of the motor.

As a further improvement of the utility model, a plurality of heat dissipation fins are provided on the axial outer wall of the support plate, so that the heat dissipation speed is increased by increasing the heat dissipation area.

As a further improvement of the utility model, a wire harness hole is provided on the axial end wall of the support plate, and the wire harness of the stator core coil winding is sealed and inserted into the wire harness hole, and the wire harness is drawn out on the support plate, which has good manufacturability and insulation Reliable, avoiding the problem of short circuit due to poor insulation.

As a further improvement of the utility model, the structure in which the wire harness of the stator core coil winding is sealed and placed in the wire harness hole is as follows: a sealing sleeve is fixed in the wire harness hole, and the inner and outer walls of the sealing sleeve in the circumferential direction are respectively elastically tightened. The inside wall of the harness hole and the outside wall of the harness.

As a further improvement of the utility model, the heat sink is one of straight and curved.

As a further improvement of the utility model, the structure that the inner side of the bracket plate is sealed and fixed on the shaft in the circumferential direction is: a keyway is provided on the outer side wall of the shaft, and a key is provided on the inner side wall of the bracket plate, and the key can be inserted into the keyway. A sealing ring is also arranged on the inner side wall of the support plate, and the inner side wall of the sealing ring is elastically tight to the outer side wall of the jacking shaft.

As a further improvement of the utility model, the structure in which the transmission disk is dynamically sealed and rotatably sleeved on the outer circumference of one end of the shaft is as follows: an inner bearing is provided, the outer circumference of the inner bearing is fixed in the transmission disc, and the inner circumference of the inner bearing is fixedly sleeved on the outer circumference of one end of the shaft , is also provided with an inner seal ring, the position of the inner seal ring is fixed relative to the transmission disc, the position of the inner seal ring rotates relative to the outer circumference of one end of the shaft, and the inner seal ring seals the inner bearing.

As a further improvement of the utility model, the structure that one end of the housing is dynamically sealed and rotatably sleeved on the outer circumference of one end of the transmission disc is as follows: an outer bearing is provided, the outer circumference of the outer bearing is fixed in one end of the housing, and the inner circumference of the outer bearing is fixedly sleeved on the transmission disc The outer periphery of one end is provided with an outer sealing ring. The position of the outer sealing ring is fixed relative to the shell, and the position of the outer sealing ring rotates relative to the transmission disc. The outer sealing ring seals the outer bearing.

The beneficial technical effect of the utility model is that: the utility model shaft, the transmission disc, the support plate and the shell together form an annular sealed space to accommodate the rotor and stator core coil windings, and the other end of the support plate is in direct contact with the atmosphere, and the The heat generated by the coil winding of the stator core is directly dissipated into the atmosphere, and the heat dissipation speed is fast, which can quickly reduce the temperature of the coil winding of the stator core, reduce the power loss of the motor, and improve the efficiency of the motor.

Description of drawings

Fig. 1 is a schematic diagram of the structure principle of the utility model.

Detailed ways

Embodiment: An electric vehicle motor cooling structure, the electric vehicle motor includes a shaft 1, a transmission disc 2, a casing 3, a stator core coil winding 4, a bracket plate 5 and a rotor 6, and the transmission disc 2 is dynamically sealed and rotated sleeved on the The outer circumference of one end of the shaft 1, the dynamic sealing and rotating sleeve of one end of the housing 3 is set on the outer circumference of one end of the transmission disc 2, the rotor 6 is fixedly connected with the other end of the transmission disc 2, the stator core coil winding 4 is located inside the inner circumferential surface of the rotor 6, and the stator core coil winding 4 is fixed on the support plate 5, and the inner side of the support plate 5 in the circumferential direction is sealed and fixed on the shaft 1. The outer end of the support plate 5 in the circumferential direction is sealed and fixed to the other end of the housing 3. The shaft 1, the transmission disc 2, and the support plate 5 The casing 3 together forms an annular sealed space, the rotor 6 and the stator core coil windings are located in the sealed space, the other end of the support plate 5 of the stator core coil winding 4 is in direct contact with the atmosphere, and the stator core coil winding 4 produces The heat is directly dissipated into the atmosphere, and the heat dissipation speed is fast, which can quickly reduce the temperature of the stator core coil winding 4, reduce the power loss of the motor, and improve the efficiency of the motor.

A plurality of heat dissipation fins 51 are arranged on the axial outer wall of the support plate 5, so that the heat dissipation speed is increased by increasing the heat dissipation area.

The axial end wall of the support plate 5 is provided with a wire harness hole 52, and the wire harness 41 of the stator core coil winding 4 is sealed and inserted in the wire harness hole 52, and the wire harness is drawn out on the bracket plate 5, which has good manufacturability and reliable insulation. The problem of short circuit due to poor insulation is avoided.

The wire harness 41 of the stator core coil winding 4 is sealed and placed in the wire harness hole 52. The structure is as follows: a sealing sleeve 55 is fixed in the wire harness hole 52, and the inner and outer walls of the sealing sleeve 55 in the circumferential direction are respectively elastically tightened to the top of the wire harness hole. 52 inside wall and wire harness 41 outside wall.

The cooling fins 51 are either straight or curved.

The structure in which the inner side of the support plate 5 in the circumferential direction is sealed and fixed on the shaft 1 is as follows: a keyway 11 is provided on the outer side wall of the shaft 1, and a key 53 is provided on the inner side wall of the support plate 5, and the key 53 can be inserted into the keyway 11. Inside, a sealing ring 54 is also provided on the inner side wall of the support plate 5 , and the inner side wall of the sealing ring 54 is elastically tight to the outer side wall of the top shaft 1 .

The structure in which the transmission disc 2 is dynamically sealed and rotatably sleeved on the outer circumference of one end of the shaft 1 is as follows: an inner bearing is provided, the outer circumference of the inner bearing is fixed in the transmission disc 2, the inner circumference of the inner bearing is fixedly sleeved on the outer circumference of one end of the shaft, and an inner bearing is provided. The sealing ring, the position of the inner sealing ring is fixed relative to the transmission disc, the position of the inner sealing ring rotates relative to the outer circumference of one end of the shaft 1, and the inner sealing ring seals the inner bearing.

The structure that one end of the housing 3 is dynamically sealed and rotatably sleeved on the outer circumference of one end of the transmission disc 2 is: an outer bearing is provided, the outer circumference of the outer bearing is fixed in one end of the housing, and the inner circumference of the outer bearing is fixedly sleeved on the outer circumference of one end of the transmission disc 2. There is an outer sealing ring, the position of the outer sealing ring is fixed relative to the shell, the position of the outer sealing ring rotates relative to the transmission disc 2, and the outer sealing ring seals the outer bearing.

Claims (8)

1. electric vehicle motor cooling structure, electric vehicle motor comprises axle (1), drive plate (2), shell (3), stator core coil windings (4), supporting plate (5) and rotor (6), described drive plate (2) movable sealing turning set is located at axle (1) one end periphery, shell (3) one end movable sealing turning sets are located at drive plate (2) one end peripheries, rotor (6) is connected with drive plate (2) other end, stator core coil windings (4) is positioned at rotor (6) inner peripheral surface inboard, stator core coil windings (4) is fixedly arranged on the supporting plate (5), it is characterized in that: supporting plate (5) circumferencial direction inner seal is fixedly arranged on the axle (1), supporting plate (5) the circumferencial direction outside one end and the sealing of shell (3) other end are connected, axle (1), drive plate (2), supporting plate (5) forms an annular seal space jointly with shell (3), and rotor (6) and stator core coil windings all are positioned at the sealing space.

2. electric vehicle motor cooling structure as claimed in claim 1 is characterized in that: described supporting plate (5) axially lateral wall is provided with some fin (51).

3. electric vehicle motor cooling structure as claimed in claim 1 is characterized in that: described supporting plate (5) axial end wall is provided with wire harness hole (52), and wire harness (41) sealing of stator core coil windings (4) is placed through in this wire harness hole (52).

4. electric vehicle motor cooling structure as claimed in claim 3, it is characterized in that: the structure that wire harness (41) sealing of described stator core coil windings (4) is placed through in this wire harness hole (52) is: be installed with a sealing shroud (55) in wire harness hole (52), the interior lateral wall of sealing shroud (55) circumferencial direction elasticity respectively presses closer wire harness hole (52) madial wall and wire harness (41) lateral wall.

5. electric vehicle motor cooling structure as claimed in claim 2 is characterized in that: described fin (51) is a linear pattern and curved a kind of.

6. electric vehicle motor cooling structure as claimed in claim 1, it is characterized in that: the structure that supporting plate (5) circumferencial direction inner seal is fixedly arranged on the axle (1) is: axle (1) lateral wall is provided with keyway (11), supporting plate (5) madial wall is provided with key (53), this key (53) just can be inserted in the keyway (11), also be provided with sealing ring (54) on supporting plate (5) madial wall, sealing circle (54) madial wall elasticity presses closer axle (1) lateral wall.

7. electric vehicle motor cooling structure as claimed in claim 1, it is characterized in that: the structure that described drive plate (2) movable sealing turning set is located at axle (1) one end periphery is: be provided with an inner bearing, the inner bearing periphery is fixed in the drive plate (2), all fixed covers are located at axle one end periphery in the inner bearing, be provided with inner seal ring again, the relative drive plate in inner seal ring position is fixed, and rotate relative to axle (1) one end periphery the inner seal ring position, inner seal ring sealing inner bearing.

8. electric vehicle motor cooling structure as claimed in claim 1, it is characterized in that: the structure that described shell (3) one end movable sealing turning sets are located at drive plate (2) one end peripheries is: be provided with an outer bearing, the outer bearing periphery is fixed in shell one end, all fixed covers are located at drive plate (2) one end peripheries in the outer bearing, be provided with exterior seal ring again, exterior seal ring position opposite shell is fixed, and rotate relative to drive plate (2) the exterior seal ring position, exterior seal ring sealing outer bearing.

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