CN215120356U

CN215120356U - In-wheel motor with dry ventilative device

Info

Publication number: CN215120356U
Application number: CN202121210705.8U
Authority: CN
Inventors: 倪捷; 吴启皇; 徐嘉伟; 王晓飞
Original assignee: Zhejiang Luyuan Electric Vehicle Co Ltd
Current assignee: Zhejiang Luyuan Electric Vehicle Co Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-12-10
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses an in-wheel motor with dry ventilative device, including in-wheel motor, in-wheel motor includes the motor shaft, and the cover establishes the end cover subassembly on the motor shaft, the wheel hub subassembly, stator module, the hub cap subassembly, the end cover subassembly, the wheel hub subassembly, the common cooperation of hub cap subassembly forms insulating coolant oil holding chamber, be equipped with the shaft hole in the motor shaft, still include the dry ventilative device of motor, the dry ventilative device of motor includes the air duct, oil and gas separator, the drier, the shaft hole is arranged in to the drier, insulating coolant oil holding intracavity is located to oil and gas separator, the both ends of air duct respectively with the shaft hole, oil and gas separator is connected and is formed inside and outside gas exchange system. The utility model discloses can effectively promote in-wheel motor's gas exchange ability, guarantee the balance of the inside and outside atmospheric pressure of in-wheel motor, inside can also preventing the moisture in the air entering motor simultaneously, avoid the inside corrosion of motor and influence the performance of motor, the life of extension motor.

Description

In-wheel motor with dry ventilative device

Technical Field

The utility model relates to an in-wheel motor especially relates to an in-wheel motor with dry ventilative device.

Background

The heat dissipation mode of the existing hub motor in the market generally comprises the following 2 types:

1) the common hub motor in the market radiates heat through the air;

2) part of the liquid-cooled motor is radiated by insulating cooling oil liquid;

above-mentioned two kinds of in-wheel motor are at the operation in-process, and the inside temperature of motor risees, and inside atmospheric pressure can rise thereupon, if do not have corresponding exhaust apparatus with inside high-temperature gas effectively discharge, can lead to the inside and outside atmospheric pressure unbalance of motor, a little hot-air can be through motor line sinle silk and end cover oil blanket department discharge. When the motor stops working, the temperature of the inner coil of the motor is reduced, the air pressure inside the motor is lower than the external air pressure due to the reduction of the amount of the gas inside the motor, and water vapor in the air enters the motor through a gap between the wire core of the motor and the insulating layer, so that the motor enters water, and the inside of the motor rusts.

Therefore, if the existing electric vehicle adopts the hub motor without the drying and ventilating device, the problem of the internal and external pressure difference of the motor cannot be avoided when the hub motor works, the balance of the internal and external air pressure of the hub motor is difficult to guarantee, and water vapor in the air easily enters the motor to cause the internal rusting of the motor and influence the performance of the motor.

Based on the above-mentioned condition, the wheel hub motor that has dry ventilative device is used for waiting to solve.

Disclosure of Invention

The utility model discloses to the problem of the inside and outside pressure differential of the wheel hub motor during operation that exists among the prior art can't be avoided, and inside steam in the air got into the motor easily, arouses defect such as the inside rust of motor, provides a new wheel hub motor with dry ventilative device.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

the utility model provides a wheel hub motor with dry breather, includes wheel hub motor, wheel hub motor includes the motor shaft, and the cover is established end cover subassembly, wheel hub subassembly, stator module, hub cap subassembly on the motor shaft, the end cover subassembly, wheel hub subassembly, hub cap subassembly cooperate jointly to form insulating cooling oil holding chamber, be equipped with the shaft hole in the motor shaft, still include the dry breather of motor, the dry breather of motor includes air duct, oil and gas separator, drier, the drier is arranged in the shaft hole, oil and gas separator locates insulating cooling oil holding intracavity, the both ends of air duct respectively with the shaft hole, oil and gas separator are connected and are formed inside and outside gas exchange system.

In the structure of the in-wheel motor with the drying and ventilating device, the shaft hole is formed in the motor shaft, the drying and ventilating device of the motor is arranged in the in-wheel motor, the shaft hole is communicated with the drying and ventilating device of the motor to form a gas exchange system between the inside of the in-wheel motor and the outside atmosphere, and when oil in the in-wheel motor is prevented from seeping out, the balance of the air pressure inside and outside the in-wheel motor is guaranteed.

The oil-gas separator is used for separating oil and gas inside the hub motor, preventing the oil and the gas from passing through, and the gas guide pipe is used for conveying the gas inside the hub motor to the shaft hole. The desiccant is used to absorb moisture in the air.

The utility model discloses an external shaft hole of design intercommunication and cooperation air duct, oil and gas separator on the motor shaft can effectively promote wheel hub motor's gas exchange ability, guarantees the balance of the inside and outside atmospheric pressure of wheel hub motor, simultaneously, cooperates the downthehole drier of shaft, can also prevent that moisture in the air from getting into inside the motor, avoids the inside corrosion of motor and influences the performance of motor, prolongs the life of motor

Preferably, the stator assembly of the hub motor with the drying and ventilating device is provided with a stator support, and the oil-gas separator is fixed on the stator support.

The oil-gas separator is fixed on the stator support, so that the oil-gas separator can keep stable along with the stator assembly.

Preferably, the wheel hub motor with the drying and ventilating device is characterized in that the oil-blocking and ventilating film is arranged in the middle of the oil-gas separator, and the air outlet is formed in the bottom of the oil-gas separator and connected with the air guide pipe.

The oil-blocking breathable film and the air outlet of the oil-gas separator can realize that high-temperature gas inside the wheel hub motor is diffused to the outside of the wheel hub motor through the oil-blocking breathable film, the air outlet, the air guide pipe and the shaft hole, and the insulating cooling oil inside the wheel hub motor can be effectively blocked by the oil-blocking breathable film, so that the condition that the oil overflows to the outside of the wheel hub motor through the air guide pipe is avoided.

Preferably, the aforesaid an in-wheel motor with dry ventilative device, dry ventilative device of motor still includes first rubber buffer, dustproof pad embedding in the shaft hole, the shutoff of first rubber buffer the one end in shaft hole.

First rubber buffer, dustproof pad can effectively avoid the outside tiny solid particle of wheel hub motor to get into inside and the inside corrosion of wheel hub motor that arouses of wheel hub motor.

Preferably, the hub motor with the drying and ventilating device is characterized in that a ventilating hole is formed in the middle of the first rubber plug, and the outer edge of the first rubber plug is provided with a taper of 2-5 degrees.

The outer edge of the first rubber plug is provided with 2-5 degrees of taper, so that the effect of better plugging the shaft hole can be exerted, and the air holes are used for forming air exchange between the interior of the hub motor and the outside air.

Preferably, the in-wheel motor with dry ventilative device, the one end in shaft hole is equipped with the step hole, first rubber buffer with adopt interference fit between the step hole.

The step hole can reliably and axially position the first rubber plug; adopt interference fit between first rubber buffer and the step hole, can guarantee that first rubber buffer does not loosen and takes off.

Preferably, the hub motor with the drying and ventilating device is further provided with a vent hole in the motor shaft, the vent hole is communicated with the shaft hole, the drying and ventilating device further comprises a sealing piece, the sealing piece is in interference fit with the vent hole, and an air pipe positioning hole in interference fit with the air pipe is formed in the sealing piece.

The sealing element and the vent hole are in interference fit, so that the sealing element is prevented from loosening; the air duct and the air duct positioning hole are in interference fit, so that reliable sealing is formed while the air duct is prevented from loosening.

Preferably, in the hub motor with the drying and ventilation device, the sealing element is a second rubber plug or an oil-proof ventilation valve with an oil-proof ventilation film.

The second rubber buffer, grease proofing breather valve homoenergetic reach excellent grease proofing ventilation effect.

Preferably, the in-wheel motor with dry ventilative device of above-mentioned, the one end of second rubber buffer is equipped with the flange, the one end of air vent is equipped with the end plane, the flange with the laminating of end plane.

The flange at second rubber buffer top and the end plane laminating at air vent top can realize between second rubber buffer and the air vent full laminating formula sealed.

Preferably, the hub motor with the drying and ventilating device is characterized in that a barb is arranged at the other end of the second rubber plug, and the barb is matched with the other end of the vent hole.

When the second rubber buffer stopper advances the air vent, the barb of second rubber buffer can the back-off hold the air vent, prevents the pine of second rubber buffer to take off.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a motor shaft according to the present invention;

FIG. 3 is a schematic structural view of the motor shaft and the oil-proof breather valve of the present invention;

fig. 4 is a schematic structural view of a second rubber plug in the present invention;

fig. 5 is a schematic structural view of a first rubber plug in the present invention;

fig. 6 is a schematic structural view of the oil-gas separator in the present invention.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings 1-6 and the detailed description, which are not intended to limit the invention:

example 1

The utility model provides a wheel hub motor with dry breather, includes wheel hub motor 1, wheel hub motor 1 includes motor shaft 15, and the cover is established end cover subassembly 14, wheel hub subassembly 13, stator module 12, hub cover subassembly 11 on the motor shaft 15, end cover subassembly 14, wheel hub subassembly 13, hub cover subassembly 11 cooperate jointly to form insulating cooling oil holding chamber 16, be equipped with shaft hole 151 in the motor shaft 15, still include dry breather 2 of motor, dry breather 2 of motor includes air duct 22, oil and gas separator 21, drier 26 is arranged in shaft hole 151, oil and gas separator 21 locates in insulating cooling oil holding chamber 16, the both ends of air duct 22 respectively with shaft hole 151, oil and gas separator 21 are connected and are formed inside and outside gas exchange system.

When the hub motor is in operation, the internal temperature of the hub motor rises, the internal air pressure rises along with the temperature rise, at the moment, part of oil and gas enter the oil-gas separator 21, the oil is blocked by the oil-gas separator 21, the gas sequentially enters the air guide pipe 22 and the shaft hole 151, and is finally discharged from one end of the shaft hole 151 after being dried by the drying agent 26, so that the effect of balancing the internal air pressure of the hub motor and the external air pressure is finally achieved.

When the hub motor stops working, the internal temperature of the hub motor is reduced, the internal air pressure of the hub motor is lower than the external air pressure due to the reduction of the internal gas quantity, water vapor in the air enters the hub motor through the shaft hole 151, and is prevented from entering the hub motor through the drying treatment of the drying agent 26, and then enters the insulating cooling oil accommodating cavity 16 through the air duct 22 and the oil-gas separator 21 in sequence, so that the effect of balancing the internal air pressure and the external air pressure of the hub motor is finally achieved.

Preferably, the stator assembly 12 is provided with a stator bracket 121, and the oil separator 21 is fixed to the stator bracket 121.

Preferably, the middle part of the oil-gas separator 21 is provided with an oil-blocking and gas-permeable membrane 212, the bottom of the oil-gas separator 21 is provided with a gas outlet hole 211, and the gas outlet hole 211 is connected with the gas guide pipe 22.

Preferably, the motor drying and ventilating device 2 further comprises a first rubber plug 24 and a dustproof pad 25, the dustproof pad 25 is embedded into the shaft hole 151, and the first rubber plug 24 blocks one end of the shaft hole 151.

Preferably, the middle of the first rubber stopper 24 is provided with an air hole 241, and the outer edge of the first rubber stopper 24 is provided with a taper of 2-5 degrees.

Preferably, the one end in shaft hole 151 is equipped with step hole 152, first rubber buffer 24 with adopt interference fit between the step hole 152.

Preferably, a vent hole 153 is further formed in the motor shaft 15, the vent hole 153 is communicated with the shaft hole 151, the drying and ventilating device 2 of the motor further comprises a sealing element 23, the sealing element 23 is in interference fit with the vent hole 153, and a trachea positioning hole 232 in interference fit with the airway tube 22 is formed in the sealing element 23.

Preferably, the sealing member 23 is a second rubber plug 231 or an oil-proof gas-permeable valve 235 with an oil-proof gas-permeable membrane.

Preferably, one end of the second rubber plug 231 is provided with a flange 234, one end of the vent 153 is provided with an end plane 154, and the flange 234 is attached to the end plane 154.

Preferably, the other end of the second rubber plug 231 is provided with a barb 233, and the barb 233 is matched with the other end of the vent 153.

When the in-wheel motor is in operation, the internal temperature of the in-wheel motor rises, the internal air pressure rises along with the temperature rise, at the moment, part of oil and gas enter the oil-gas separator 21, the oil is blocked by the oil-blocking and gas-permeable film 212, the gas enters the gas guide tube 22, the sealing element 23 and the shaft hole 151 from the gas outlet hole 211 in sequence, and finally the gas is discharged from the gas holes 241 of the first rubber plug 24 after the drying treatment of the drying agent 26 and the adsorption treatment of the dustproof pad 25. In addition, the high temperature gas also carries away some of the moisture in the desiccant 26 as it is exhausted.

When the hub motor stops working, the internal temperature of the hub motor is reduced, the internal air pressure of the hub motor is lower than the external air pressure due to the reduction of the internal gas quantity, water vapor in the air enters the hub motor from the air holes 241 of the first rubber plugs 24, then enters the shaft hole 151 after being subjected to drying treatment of the drying agent 26 and adsorption treatment of the dustproof pad 25, then sequentially passes through the sealing element 23, the air guide pipe 22 and the oil-gas separator 21, enters the insulating cooling oil accommodating cavity 16, and finally, the effect of balancing the internal air pressure and the external air pressure of the hub motor is achieved.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides an in-wheel motor with dry ventilative device, includes in-wheel motor (1), in-wheel motor (1) includes motor shaft (15), and cover establish end cover subassembly (14), in-wheel subassembly (13), stator module (12), in-wheel cover subassembly (11) on motor shaft (15), end cover subassembly (14), in-wheel subassembly (13), in-wheel cover subassembly (11) cooperate jointly and form insulating cooling oil holding chamber (16), its characterized in that: the motor shaft (15) is internally provided with a shaft hole (151) and further comprises a motor drying and ventilating device (2), the motor drying and ventilating device (2) comprises a gas guide pipe (22), an oil-gas separator (21) and a drying agent (26), the drying agent (26) is arranged in the shaft hole (151), the oil-gas separator (21) is arranged in the insulating cooling oil accommodating cavity (16), and two ends of the gas guide pipe (22) are respectively connected with the shaft hole (151) and the oil-gas separator (21) to form an inner and outer gas exchange system.

2. The hub motor with dry ventilation as claimed in claim 1, wherein: the stator assembly (12) is provided with a stator support (121), and the oil-gas separator (21) is fixed on the stator support (121).

3. The hub motor with dry ventilation as claimed in claim 1, wherein: the middle part of the oil-gas separator (21) is provided with an oil-blocking and gas-permeable film (212), the bottom of the oil-gas separator (21) is provided with a gas outlet hole (211), and the gas outlet hole (211) is connected with the gas guide pipe (22).

4. The hub motor with dry ventilation as claimed in claim 1, wherein: the motor drying and ventilating device (2) further comprises a first rubber plug (24) and a dustproof pad (25), wherein the dustproof pad (25) is embedded into the shaft hole (151), and the first rubber plug (24) blocks one end of the shaft hole (151).

5. The hub motor with dry ventilation device as claimed in claim 4, wherein: the middle of the first rubber plug (24) is provided with an air hole (241), and the outer edge of the first rubber plug (24) is provided with a taper of 2-5 degrees.

6. The hub motor with dry ventilation device as claimed in claim 4, wherein: the one end in shaft hole (151) is equipped with step hole (152), first rubber buffer (24) with adopt interference fit between step hole (152).

7. The hub motor with dry ventilation as claimed in claim 1, wherein: still be equipped with air vent (153) in motor shaft (15), air vent (153) with shaft hole (151) link up each other, dry ventilative device of motor (2) still includes sealing member (23), sealing member (23) with air vent (153) interference fit, be equipped with in sealing member (23) with air duct (22) interference fit's trachea locating hole (232).

8. The hub motor with dry ventilation as claimed in claim 7, wherein: the sealing element (23) is a second rubber plug (231) or an oil-proof air-permeable valve (235) with an oil-proof air-permeable film.

9. The hub motor with dry ventilation as claimed in claim 8, wherein: one end of the second rubber plug (231) is provided with a flange (234), one end of the vent hole (153) is provided with an end plane (154), and the flange (234) is attached to the end plane (154).

10. The hub motor with dry venting as claimed in claim 9, wherein: the other end of second rubber buffer (231) is equipped with barb (233), barb (233) with the other end cooperation of air vent (153).