CN114726135A - Hollow winding internal circulation cooling type new energy automobile motor - Google Patents

Abstract

One or more embodiments of the present specification provide a hollow winding internal circulation cooling type new energy automobile motor, including: the motor sealing shell is provided with a fixed bearing seat at the front end and the rear end; the motor stator is arranged inside the motor sealing shell, and a plurality of coil embedding grooves are uniformly arranged on the inner side of the motor stator in a surrounding mode. The invention uses a plurality of groups of hollow flow guiding flat tubes made of conductor materials as winding coils of the motor, the hollow flow guiding flat tubes are of a hollow structure, a hollow circulating channel is arranged in the hollow flow guiding flat tubes, and conductive circulating media such as sodium-potassium alloy are filled in the hollow flow guiding flat tubes, so that the hollow flow guiding flat tubes and the conductive circulating media in the hollow flow guiding flat tubes can jointly form a conducting wire to pass through current, and the conductive circulating media can be exchanged and conveyed to the C-shaped heat exchange tube outside the stator from the hollow circulating channel through the central circulating sleeve, so that the heat is dissipated by taking the C-shaped heat exchange tube as the conductive circulating media, and the overall heat dissipation effect of the motor can be improved.

Description

Hollow winding internal circulation cooling type new energy automobile motor

Technical Field

One or more embodiments of this description relate to new energy automobile motor technical field, especially relate to a cavity winding inner loop cooling formula new energy automobile motor.

Background

New energy automobile motor is miniaturizing to the volume, the high power ization is high power density's direction evolution, in order to reach higher wire cross section utilization ratio, need fill in the wire of bigger area under the same cross-sectional area in order to reduce resistance, thereby reach lower resistance under the same area of less volume and generate heat in order to reduce, nevertheless the whole volume of motor reduces back power density and becomes higher, so under high-power running state, the motor wholly generates heat can be more serious, need set up extra cooling system and cool off it, in order to guarantee that the motor can be the constant motion for a long time.

The applicant finds that in order to ensure the cross-section utilization rate of a conducting wire and the magnetic effect of a stator of the current automobile motor, a larger channel cavity cannot be formed in the stator, particularly in the part of the stator close to a coil to form a circulating cooling passage, the coils are tightly attached to each other to ensure the cross-sectional area of the conducting wire of the whole motor, so that cooling liquid cannot be fully contacted with the coil with the largest heat productivity, the conducting wire positioned in the center of the inner part of a stator coil slot is more difficult to touch, the heat generated by the inner conducting wire can be absorbed and conducted at intervals through other coils and the stator, then the stator is cooled and radiated, and the whole heat radiation efficiency of the motor is poor, so the heat radiation upper limit of the motor is lower, and the motor can only run in a power state much lower than the limit power when the motor runs for a long time.

Disclosure of Invention

In view of this, an object of one or more embodiments of the present disclosure is to provide a hollow winding internal circulation cooling type new energy automobile motor, so as to solve the problem that, in order to ensure the utilization of a cross section of a conducting wire and the magnetic effect of a stator of an existing automobile motor, it is difficult to form a large circulation cooling passage on the stator, so that a cooling liquid is difficult to fully contact with a coil with the largest heat generation amount, the overall heat dissipation efficiency of the motor is poor, and therefore, the upper limit of heat dissipation of the motor is low.

In view of the above, one or more embodiments of the present specification provide a hollow winding internal circulation cooling type new energy vehicle motor, including:

the motor sealing shell is provided with a fixed bearing seat at the front end and the rear end;

the motor stator is arranged inside the motor sealing shell, a plurality of coil embedding grooves are uniformly arranged on the inner side of the motor stator in a surrounding mode, hollow winding coils are embedded inside the coil embedding grooves and are composed of a plurality of hollow flow guiding flat tubes, the hollow flow guiding flat tubes are made of conductive materials, hollow circulation channels are arranged inside hollow structures of the hollow flow guiding flat tubes, and conductive circulation media are filled inside the hollow circulation channels;

the C-shaped heat exchange tube is uniformly arranged outside the motor stator in a surrounding manner in a circumferential manner, and a plurality of heat exchange fins are uniformly arranged on the outer side of the C-shaped heat exchange tube in parallel at intervals;

the central circulation sleeve is arranged outside the motor stator in a surrounding mode, a circulation piston is arranged inside the central circulation sleeve, the front end and the rear end of the central circulation sleeve are communicated with the front end and the rear end of the C-shaped heat exchange pipe respectively, a plurality of medium conveying pipes are arranged at the front end and the rear end of the central circulation sleeve respectively, the front end and the rear end of the central circulation sleeve are communicated with the front end and the rear end of the hollow circulation channel respectively through the medium conveying pipes, an insulation spacing valve is arranged between each medium conveying pipe and the hollow circulation channel, and a connection electromagnetic valve is arranged between each central circulation sleeve and each C-shaped heat exchange pipe and each medium conveying pipe;

the permanent magnet rotor is nested in the inner side of the motor stator, a central rotating shaft is arranged at the center of the permanent magnet rotor, the front end and the rear end of the central rotating shaft are respectively nested in the inner side of the fixed bearing seat, the central rotating shaft is connected with the fixed bearing seat through the spacing bearing in a rotating mode, and the permanent magnet rotor is connected with the motor sealing shell in a rotating mode through the central rotating shaft.

In some optional embodiments, an oil collecting bottom shell is arranged at the bottom of the motor sealing shell, a backflow conveying pipe is arranged in the middle of the oil collecting bottom shell, a circulation conveying pump is arranged in the middle of the backflow conveying pipe, and the circulation conveying pump is communicated with the inside of the motor sealing shell through the backflow conveying pipe.

In some optional embodiments, motor stator's inside is provided with a plurality of spiral delivery grooves, both ends all are provided with the end opening around the spiral delivery groove, the centre of spiral delivery groove is provided with meso position communicating pipe, and all spiral delivery groove's center department all passes through meso position communicating pipe communicates each other, the outside of meso position communicating pipe is provided with stator circulation conveyer pipe, meso position communicating pipe passes through stator circulation conveyer pipe with the circulation delivery pump communicates each other.

In some optional embodiments, an insulating spacer is disposed between the hollow winding coil and the coil embedding groove, an NTC temperature sensor is disposed in the middle of the hollow winding coil, a three-phase collector ring is disposed at the outer end of the hollow winding coil, a three-phase power supply line is disposed in the middle of the three-phase collector ring, and an outer surface of the hollow flow guiding flat tube is coated with a spacer insulating paint.

In some optional embodiments, a ceramic conveying pipe is arranged in the middle of the insulating spacer valve, the medium conveying pipe and the hollow circulating channel are communicated with each other through the ceramic conveying pipe, a ceramic sealing column is arranged in the middle of the ceramic conveying pipe, a communication opening is formed in the middle of the ceramic sealing column, a control motor is arranged at the outer end of the ceramic sealing column, and the ceramic sealing column and the ceramic conveying pipe are matched with each other in size.

In some optional embodiments, an annular cooling pipe is arranged between the heat exchange fins, a plurality of cooling nozzles are uniformly arranged on the outer side of the annular cooling pipe, the interior of the annular cooling pipe is communicated with the interior of the motor sealing shell through the cooling nozzles, and the annular cooling pipe is communicated with the circulating delivery pump.

In some optional embodiments, a plurality of central circulation sleeves are arranged on the outer side of the motor stator, the central circulation sleeves are matched with the circulation piston in size, a central threaded sleeve is arranged in the middle of the circulation piston, a horizontal screw rod is arranged on the inner side of the central threaded sleeve, a circulation motor is arranged at the shaft end of the horizontal screw rod, and the horizontal center line of the horizontal screw rod is parallel to the horizontal center line of the central circulation sleeve.

In some optional embodiments, a conveying cavity is arranged inside the central rotating shaft, an annular inner wall of the conveying cavity is of a conical structure with a conical center and high left and right ends and low right ends, cooling conveying grooves are arranged at the left and right ends of the conveying cavity, a plurality of centrifugal oil injection holes are uniformly arranged in the middle of each cooling conveying groove in a circumferential state in a surrounding mode, the inside of the conveying cavity is communicated with the inside of the motor sealing shell through the centrifugal oil injection holes, and the centrifugal oil injection holes are arranged right opposite to the left and right ends of the hollow winding coil.

In some optional embodiments, a central conveying pipe is arranged in the middle of the central rotating shaft, a rotary conveying joint is arranged at the outer end of the central conveying pipe, a rotor circulating conveying pipe is arranged on the outer side of the rotary conveying joint, the rotor circulating conveying pipe is mutually communicated and rotatably connected with the inside of the central conveying pipe through the rotary conveying joint, and the rotary conveying joint is mutually communicated with the circulating conveying pump through the rotor circulating conveying pipe.

In some optional embodiments, the centre of center conveyer pipe is the circumference state and evenly encircles and be provided with a plurality of support conveyer pipes, support conveyer pipe inner fixed connection in the outer wall center department of center conveyer pipe, support conveyer pipe outer fixed connection in the annular inner wall center department of transport cavity, the centre of supporting the conveyer pipe evenly is provided with a plurality of intercommunication delivery openings along the axis direction, center conveyer pipe passes through support the conveyer pipe with intercommunication delivery opening with transport cavity communicates each other, the inside nested slip that supports the conveyer pipe is provided with the centrifugal adjustment post, the outer end of centrifugal adjustment post is provided with reset spring.

As can be seen from the above description, in the hollow winding internal circulation cooling type new energy automobile motor provided in one or more embodiments of the present disclosure, a plurality of sets of hollow flow guiding flat tubes made of conductor materials are used as winding coils of the motor, each hollow flow guiding flat tube is of a hollow structure, a hollow circulation channel is arranged inside each hollow flow guiding flat tube, and a conductive circulation medium such as sodium-potassium alloy is filled in each hollow flow guiding flat tube, so that the hollow flow guiding flat tubes and the conductive circulation medium inside each hollow flow guiding flat tube can jointly form a conductor to pass current, the cross-sectional area of the conductor of the whole motor is not significantly reduced to reduce overall resistance heating, the conductive circulation medium can directly contact with the coil structure inside the stator and serve as a conductor to absorb resistance heat, and the conductive circulation medium is a C-type heat exchange tube through which liquid can be exchanged and conveyed from the inside the hollow circulation channel to the outside of the stator, therefore, the heat is dissipated for the conductive circulating medium through the C-shaped heat exchange tube, the overall heat dissipation effect of the motor can be improved, the motor is prevented from being overheated, and the overall rated continuous power of the motor is improved.

Drawings

In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.

FIG. 1 is a schematic diagram of a transverse cross-sectional structure according to one or more embodiments of the present disclosure;

FIG. 2 is a schematic front view of one or more embodiments of the present disclosure;

FIG. 3 is a schematic diagram of a backside structure according to one or more embodiments of the present disclosure;

FIG. 4 is a schematic diagram of the internal structure of one or more embodiments of the present disclosure;

fig. 5 is a schematic structural diagram of a stator and a permanent magnet rotor of an electric machine according to one or more embodiments of the present disclosure;

fig. 6 is a schematic structural view of a stator of an electric machine according to one or more embodiments of the present disclosure;

fig. 7 is a schematic longitudinal sectional structural view of a stator of an electric machine according to one or more embodiments of the present disclosure;

fig. 8 is a schematic view of an internal structure of a stator of an electric machine according to one or more embodiments of the present disclosure;

fig. 9 is a partial schematic structural view of a stator of an electric machine in accordance with one or more embodiments of the present disclosure;

FIG. 10 is an exploded view of a C-shaped heat exchanger tube according to one or more embodiments of the present disclosure;

fig. 11 is a schematic partial sectional structural view of a stator of an electric machine according to one or more embodiments of the present disclosure:

FIG. 12 is a schematic view of the internal structure of a central circulation sleeve according to one or more embodiments of the present disclosure:

fig. 13 is a schematic partial structural view of a hollow guide flat tube according to one or more embodiments of the present disclosure:

fig. 14 is a schematic structural view of an insulating spacer valve according to one or more embodiments of the present disclosure:

fig. 15 is a schematic view of an internal structure of a stator of an electric machine according to one or more embodiments of the present disclosure.

Labeled as: 1. a motor seal housing; 101. fixing a bearing seat; 102. a spacer bearing; 103. an oil collecting bottom shell; 104. a reflux delivery pipe; 105. a circulating delivery pump; 2. a motor stator; 201. a coil fitting groove; 202. an insulating spacer; 203. a spiral conveying trough; 204. the end part is open; 205. a middle position communicating pipe; 206. a stator circulating conveying pipe; 3. a hollow winding coil; 301. a three-phase collector ring; 302. a three-phase power supply line; 303. an NTC temperature sensor; 4. a hollow flow guiding flat pipe; 401. a hollow circulation channel; 402. an insulating spacer valve; 403. a ceramic delivery pipe; 404. a ceramic seal post; 405. a communication opening; 406. controlling the motor; 5. a C-type heat exchange tube; 501. heat exchange fins; 502. an annular cooling tube; 503. cooling the nozzle; 6. a central circulation sleeve; 601. a circulating piston; 602. a central threaded sleeve; 603. a horizontal screw; 604. a circulating motor; 605. a medium delivery pipe; 606. connecting an electromagnetic valve; 7. a permanent magnet rotor; 701. a central rotating shaft; 702. a delivery cavity; 703. cooling the conveying trough; 704. a centrifugal oil spray hole; 8. a central delivery pipe; 801. a rotary delivery sub; 802. a rotor circulating conveying pipe; 803. supporting the conveying pipe; 804. the conveying hole is communicated; 805. a centrifugal conditioning column; 806. a return spring.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.

It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In one or more embodiments of the present specification, a hollow winding internal circulation cooling type new energy automobile motor includes:

the motor sealing device comprises a motor sealing shell 1, wherein the front end and the rear end of the motor sealing shell 1 are respectively provided with a fixed bearing seat 101;

the motor stator 2 is arranged inside the motor sealing shell 1, a plurality of coil embedding grooves 201 are uniformly arranged on the inner side of the motor stator 2 in a surrounding mode, hollow winding coils 3 are embedded inside the coil embedding grooves 201, each hollow winding coil 3 is composed of a plurality of hollow flow guiding flat tubes 4, each hollow flow guiding flat tube 4 is made of a conductive material, each hollow flow guiding flat tube 4 is of a hollow structure, a hollow circulation channel 401 is arranged inside each hollow flow guiding flat tube 4, and a conductive circulation medium is filled inside each hollow circulation channel 401;

the C-shaped heat exchange tube 5 is uniformly arranged outside the motor stator 2 in a surrounding manner in a circumferential manner, and a plurality of heat exchange fins 501 are uniformly arranged on the outer side of the C-shaped heat exchange tube 5 in parallel at intervals;

the motor stator comprises a central circulation sleeve 6 which is arranged outside the motor stator 2 in a surrounding mode, a circulation piston 601 is arranged inside the central circulation sleeve 6, the front end and the rear end of the central circulation sleeve 6 are communicated with the front end and the rear end of a C-shaped heat exchange pipe 5 respectively, a plurality of medium conveying pipes 605 are arranged at the front end and the rear end of the central circulation sleeve 6, the front end and the rear end of the central circulation sleeve 6 are communicated with the front end and the rear end of a hollow circulation channel 401 respectively through the medium conveying pipes 605, an insulation spacing valve 402 is arranged between each medium conveying pipe 605 and the hollow circulation channel 401, and a connection electromagnetic valve 606 is arranged between each central circulation sleeve 6 and each C-shaped heat exchange pipe 5 and each medium conveying pipe 605;

the permanent magnet rotor 7 is nested on the inner side of the motor stator 2, a central rotating shaft 701 is arranged in the center of the permanent magnet rotor 7, the front end and the rear end of the central rotating shaft 701 are respectively nested on the inner side of the fixed bearing seat 101, the central rotating shaft 701 is rotatably connected with the fixed bearing seat 101 through a spacing bearing 102, and the permanent magnet rotor 7 is rotatably connected with the motor sealing shell 1 through the central rotating shaft 701.

Referring to fig. 1 to 15, as an embodiment of the present invention, an electric machine of a hollow winding internal circulation cooling type new energy vehicle includes: the motor sealing device comprises a motor sealing shell 1, wherein the front end and the rear end of the motor sealing shell 1 are respectively provided with a fixed bearing seat 101; the motor stator 2 is arranged inside the motor sealing shell 1, a plurality of coil embedding grooves 201 are uniformly arranged on the inner side of the motor stator 2 in a surrounding mode, hollow winding coils 3 are embedded inside the coil embedding grooves 201, each hollow winding coil 3 is composed of a plurality of hollow flow guiding flat tubes 4, each hollow flow guiding flat tube 4 is made of a conductive material, each hollow flow guiding flat tube 4 is of a hollow structure, a hollow circulation channel 401 is arranged inside each hollow flow guiding flat tube 4, and a conductive circulation medium is filled inside each hollow circulation channel 401; the C-shaped heat exchange tube 5 is uniformly arranged outside the motor stator 2 in a surrounding manner in a circumferential manner, and a plurality of heat exchange fins 501 are uniformly arranged on the outer side of the C-shaped heat exchange tube 5 in parallel at intervals; the motor stator comprises a central circulation sleeve 6 which is arranged outside the motor stator 2 in a surrounding mode, a circulation piston 601 is arranged inside the central circulation sleeve 6, the front end and the rear end of the central circulation sleeve 6 are communicated with the front end and the rear end of a C-shaped heat exchange pipe 5 respectively, a plurality of medium conveying pipes 605 are arranged at the front end and the rear end of the central circulation sleeve 6, the front end and the rear end of the central circulation sleeve 6 are communicated with the front end and the rear end of a hollow circulation channel 401 respectively through the medium conveying pipes 605, an insulation spacing valve 402 is arranged between each medium conveying pipe 605 and the hollow circulation channel 401, and a connection electromagnetic valve 606 is arranged between each central circulation sleeve 6 and each C-shaped heat exchange pipe 5 and each medium conveying pipe 605; the permanent magnet rotor 7 is nested inside the motor stator 2, a center rotating shaft 701 is arranged at the center of the permanent magnet rotor 7, the front end and the rear end of the center rotating shaft 701 are respectively nested inside the fixed bearing seats 101, the center rotating shaft 701 is rotatably connected with the fixed bearing seats 101 through spacing bearings 102, the permanent magnet rotor 7 is rotatably connected with the motor sealing shell 1 through the center rotating shaft 701, an insulating spacing gasket 202 is arranged between the hollow winding coil 3 and the coil embedding groove 201, an NTC temperature sensor 303 is arranged in the middle of the hollow winding coil 3, a three-phase bus ring 301 is arranged at the outer end of the hollow winding coil 3, a three-phase power supply line 302 is arranged in the middle of the three-phase bus ring 301, spacing insulating paint is coated on the outer surface of the hollow flow guide flat tube 4, the motor mainly comprises the motor stator 2 and the permanent magnet rotor 7, the motor stator 2 and the permanent magnet rotor 7 are both sealed inside the motor sealing shell 1, the motor stator 2 is integrally formed by overlapping multiple layers of silicon steel sheets, a plurality of coil tabling grooves 201 are arranged inside the motor stator 2, hollow winding coils 3 are arranged in the coil tabling grooves 201 in a tabling mode, each hollow winding coil 3 is formed by a plurality of hollow flow guiding flat tubes 4, the hollow flow guiding flat tubes 4 are integrally made of conductive materials so as to be convenient for being electrified, all the hollow flow guiding flat tubes 4 are connected into a three-phase collecting ring 301, the three-phase collecting ring 301 can divide all the hollow flow guiding flat tubes 4 into three groups and respectively connected into three-phase power supply wires 302 to form a three-phase coil structure, the current can be electrified to the hollow winding coils 3 through the three-phase power supply wires 302 and an external motor controller so as to form a constantly changing magnetic field through the motor stator 2, the permanent magnet rotors 7 are arranged on the inner side of the motor stator 2 in a tabling mode, a plurality of permanent magnet rotors 7 are uniformly arranged on the permanent magnet rotors 7 in a surrounding mode, and the permanent magnet rotors 7 on the inner side can be driven to rotate through the magnetic field of the motor stator 2 on the outer side, furthermore, the driving parts such as gears and wheels connected with the motor can be driven to rotate, the central rotating shaft 701 and the fixed bearing seat 101 are rotationally connected through the spacing bearing 102 to reduce the friction force when the motor stator 2 rotates, the NTC temperature sensor 303 is further arranged in the middle of the hollow winding coil 3, the internal temperature of the motor can be monitored through the NTC temperature sensor 303 to adjust the motor according to the requirement, the winding coil of the common motor is generally of a solid structure and can be also arranged into a rectangular flat wire structure to improve the cross section area of the whole lead of the motor, so that the overall resistance is reduced to reduce the heat productivity, the hollow winding coil 3 of the motor is composed of a plurality of hollow flow guide flat tubes 4, the hollow flow guide flat tubes 4 are also integrally arranged and mutually attached in the coil embedding groove 201 to improve the cross section area of the lead, and the hollow flow guide flat tubes 4 are of a hollow structure, similarly, the hollow flat flow guide tube 4 is made of an electrically conductive material for facilitating electrical conduction, the hollow flat flow guide tube 4 is internally provided with the hollow circulating channel 401, the hollow circulating channel 401 is also filled with an electrically conductive circulating medium, the electrically conductive circulating medium is an electrically conductive material which presents liquid at normal temperature, usually, sodium-potassium alloy, mercury and the like can be used, particularly, the overall electrical conductivity of the sodium-potassium alloy is similar to that of copper which is a common conductor material, but the specific heat capacity is larger, the sodium-potassium alloy is more suitable to be used as a heat conductive circulating medium, the whole hollow flat flow guide tube 4 filled with the electrically conductive circulating medium can be electrically conducted, so that the cross-sectional area of the whole lead is not reduced, when current passes through, most of the current can be conducted by the hollow flat flow guide tube 4 due to the skin effect of the current, a small part of the current is conducted by the electrically conductive circulating medium, and the electrically conductive circulating medium is in direct contact with the interior of the hollow flat flow guide tube 4, so that heat resistance generated by the hollow flat flow guide tube 4 can be directly absorbed, meanwhile, the conductive circulating medium can generate heat when passing through current, a central circulating sleeve 6 and a C-shaped heat exchange tube 5 are arranged outside a stator of the motor, the front end and the rear end of the central circulating sleeve 6 are respectively communicated with the front end and the rear end of the C-shaped heat exchange tube 5, a plurality of medium conveying pipes 605 are arranged at the front end and the rear end of the central circulating sleeve 6, the front end and the rear end of the central circulating sleeve 6 are respectively communicated with the front end and the rear end of the hollow circulating channel 401 through the medium conveying pipes 605, an insulating interval valve 402 is arranged between the medium conveying pipes 605 and the hollow circulating channel 401, and connecting electromagnetic valves 606 are arranged between the central circulating sleeve 6 and the C-shaped heat exchange tube 5 and the medium conveying pipes 605, so that the hollow flow guide flat tube 4 is not only used as a coil to conduct electricity to generate a magnetic field to drive the motor, but also used as an internal channel of the whole cooling circulation, and the conductive circulating medium in the hollow flow guide flat tube 4 can pass through the central circulating tube after absorbing certain heat Sleeve 6 carries to C type heat exchange tube 5, and the C type heat exchange tube 5 outside then is provided with a plurality of heat transfer fins 501, can dispel the heat to it through heat transfer fins 501, then can carry back cavity water conservancy diversion flat tube 4 again after the cooling of conductive circulating medium, in order to accomplish the heat dissipation circulation, thereby can take out the inside heat exchange of motor coil structure through conductive circulating medium, in order to improve the holistic radiating efficiency of coil structure, can not reduce holistic wire cross sectional area simultaneously, thereby be favorable to improving holistic radiating efficiency of motor and upper limit, can avoid the motor overheated, and then be favorable to improving the holistic rated continuous power of motor.

Referring to fig. 1 to 15, optionally, an oil collection bottom shell 103 is disposed at the bottom of the motor sealed housing 1, a backflow conveying pipe 104 is disposed in the middle of the oil collection bottom shell 103, a circulation conveying pump 105 is disposed in the middle of the backflow conveying pipe 104, the circulation conveying pump 105 is communicated with the inside of the motor sealed housing 1 through the backflow conveying pipe 104, a plurality of spiral conveying grooves 203 are disposed in the motor stator 2, end openings 204 are disposed at the front and rear ends of the spiral conveying grooves 203, a middle position communicating pipe 205 is disposed in the middle of the spiral conveying grooves 203, the centers of all the spiral conveying grooves 203 are communicated with each other through the middle position communicating pipe 205, a stator circulation conveying pipe 206 is disposed outside the middle position communicating pipe 205, the middle position communicating pipe 205 is communicated with the circulation conveying pump 105 through the stator circulation conveying pipe 206, the motor is mainly composed of the motor stator 2 and the permanent magnet rotor 7, the motor stator 2 and the permanent magnet rotor 7 are both disposed in the motor sealed housing 1, the bottom of the motor sealing shell 1 is provided with an oil collecting bottom shell 103, insulating cooling media such as cooling oil can be contained in the oil collecting bottom shell 103, the motor stator 2 is internally provided with a plurality of spiral conveying grooves 203, the spiral conveying grooves 203 are positioned at the position, close to the outer side, of the motor stator 2 so as to reduce the influence on the magnetic effect of the motor stator 2, the centers of all the spiral conveying grooves 203 are communicated with each other through a middle position communicating pipe 205, the outer side of the middle position communicating pipe 205 is provided with a stator circulating conveying pipe 206, the middle position communicating pipe 205 is communicated with the circulating conveying pump 105 through the stator circulating conveying pipe 206, so that the cooling oil can be pumped into the stator circulating conveying pipe 206 through the circulating conveying pump 105 and then conveyed into the spiral conveying grooves 203, the cooling oil conveyed through the spiral conveying grooves 203 can absorb certain heat of the motor stator 2 to dissipate the heat of the motor stator 2 as a whole, and then the cooling oil can be conveyed out through end openings 204 at the front end and the rear end of the spiral conveying grooves 203, and tip opening 204 is located motor stator 2's front and back both ends face department, cooling oil from tip opening 204 after the outflow alright with the end position of downward natural flow to hollow winding coil 3, in order to dispel the heat to hollow winding coil 3, final cooling oil can receive gravity natural flow to the oily drain pan 103 department of motor seal housing 1 bottom, and circulating transport pump 105 can insert external car cooler, in order to carry the cooling oil of collecting to external car cooler through circulating transport pump 105 and dispel the heat the back, again carry back stator circulating transport pipe 206, thereby can carry out the heat dissipation simultaneously to motor stator 2 and hollow winding coil 3, so that improve the holistic radiating efficiency of motor.

Referring to fig. 1 to 15, optionally, a ceramic delivery pipe 403 is disposed in the middle of the insulating partition valve 402, the medium delivery pipe 605 is communicated with the hollow circulation channel 401 through the ceramic delivery pipe 403, a ceramic sealing column 404 is disposed in the middle of the ceramic delivery pipe 403, a communication opening 405 is disposed in the middle of the ceramic sealing column 404, a control motor 406 is disposed at an outer end of the ceramic sealing column 404, the ceramic sealing column 404 is in size fit with the ceramic delivery pipe 403, an annular cooling pipe 502 is disposed between the heat exchange fins 501, a plurality of cooling nozzles 503 are uniformly disposed outside the annular cooling pipe 502, the inside of the annular cooling pipe 502 is communicated with the inside of the motor sealing housing 1 through the cooling nozzles 503, the annular cooling pipe 502 is communicated with the circulation delivery pump 105, a plurality of central circulation sleeves 6 are disposed outside the motor stator 2, the central circulation sleeves 6 are in size fit with the circulation piston 601, a central screw sleeve 602 is arranged in the middle of the circulating piston 601, a horizontal screw 603 is arranged on the inner side of the central screw sleeve 602, a circulating motor 604 is arranged at the shaft end of the horizontal screw 603, the horizontal central line of the horizontal screw 603 is parallel to the horizontal central line of the central circulating sleeve 6, the motor mainly comprises a motor stator 2 and a permanent magnet rotor 7, the motor stator 2 and the permanent magnet rotor 7 are both sealed and arranged in the motor sealing shell 1, a hollow circulating channel 401 is arranged in the hollow flow guide flat tube 4, the hollow circulating channel 401 is also filled with a conductive circulating medium, the heat in the motor coil structure is exchanged and taken out while the conductive circulating medium is used as a part of a conductive coil, so as to improve the whole heat dissipation efficiency of the coil structure, meanwhile, the conductive circulating medium is filled in the hollow flow guide flat tube 4, the conductive circulating medium is also filled in the central circulating sleeve 6, the C-type heat exchange tube 5 and the medium conveying tube 605, conductive circulating media are filled in the whole circulating passage to avoid generating a cavity, an insulating spacer valve 402 is arranged between the hollow diversion flat tube 4 and the medium conveying tube 605, the medium conveying tube 605 and the hollow circulating channel 401 are communicated with each other through a ceramic conveying tube 403, the ceramic conveying tube 403 is sealed through a ceramic sealing column 404, the ceramic sealing column 404 can adjust the position of a communication opening 405 by controlling the rotation of a motor 406 so as to control the on-off of the ceramic conveying tube 403, the ceramic conveying tube 403 and the ceramic sealing column 404 in the insulating spacer valve 402 are made of insulating materials, so that the hollow diversion flat tube 4 and the medium conveying tube 605 can be spaced through the insulating spacer valve 402, and the conductive circulating media filled in the two are spaced, so that the conductive circulating media in the hollow diversion flat tube 4 are independently filled in the hollow diversion flat tube 4 and the conductive circulating media in the hollow diversion flat tube 4 form a conducting wire together, the current is prevented from being directly transmitted to an outer side heat dissipation structure through the hollow flow guide flat tube 4 by a conductive circulation medium, so that the constancy of the current and a magnetic field is maintained, the conductive circulation medium is subjected to periodic exchange circulation in the whole process through the central circulation sleeve 6 when circulating, namely when the conductive circulation medium is kept standing still in the hollow flow guide flat tube 4 and works for a period of time to absorb enough heat, the horizontal screw 603 can be driven to rotate by the circulation motor 604, the horizontal screw 603 drives the circulation piston 601 to translate through the central screw sleeve 602, the circulation piston 601 is positioned at the front end of the central circulation sleeve 6 and translates from front to rear side, the cooled conductive circulation medium is filled in the central circulation sleeve 6 at the moment, the connection electromagnetic valves 606 arranged between the front end and the rear end of the central circulation sleeve and the medium conveying tube 605 are opened, and the connection electromagnetic valve 606 between the central circulation sleeve and the C-type heat exchange tube 5 is closed, all the insulation spacing valves 402 are synchronously opened, so that the conductive circulating medium in the hollow diversion flat tubes 4 can be pumped into the space on the front side of the circulating piston 601 in the central circulating sleeve 6 through the medium conveying pipe 605 on the front side, the conductive circulating medium filled in the space on the rear side of the circulating piston 601 after cooling is synchronously pressed into the hollow diversion flat tubes 4 through the medium conveying pipe 605, then all the insulation spacing valves 402 are synchronously closed to complete the integral replacement of the conductive circulating medium in the hollow diversion flat tubes 4, then the circulating piston 601 can move reversely from the rear end to the front end of the central circulating sleeve 6, at the moment, the conductive circulating medium filled in the central circulating sleeve 6 is the conductive circulating medium after absorbing heat, the connecting electromagnetic valves 606 arranged between the front and rear ends and the C-type heat exchange tube 5 are opened, and the connecting electromagnetic valve 606 arranged between the central circulating sleeve and the medium conveying pipe 605 is closed, therefore, the conductive circulating medium filled in the central circulating sleeve 6 can be pressed into the central circulating sleeve 6 from the front end of the C-shaped heat exchange tube 5, the conductive circulating medium in the C-shaped heat exchange tube 5 for completing heat dissipation is conveyed into the central circulating sleeve 6 from the rear end of the C-shaped heat exchange tube, then all the connecting electromagnetic valves 606 are closed, so that the integral circulation of the conductive circulating medium in the C-shaped heat exchange tube 5 is completed, after the conductive circulating medium absorbing heat is conveyed to the C-shaped heat exchange tube 5, the heat can be dissipated through the heat exchange fins 501 on the outer side of the heat exchange tube to reduce the temperature, the outer side of the motor stator 2 is provided with a plurality of central circulating sleeves 6, each central circulating sleeve 6 is independently connected with a certain number of hollow flat flow guiding tubes 4 under the same phase coil group to avoid short circuit, and the circulating conveying pump 105 can convey cooling oil to the annular cooling tube 502, the cooling oil is sprayed out from a plurality of cooling nozzles 503 on the annular cooling pipe 502, so that the cooling oil is uniformly sprayed to the surfaces of the nearby heat exchange fins 501 and the surfaces of the C-shaped heat exchange pipes 5, the heat dissipation efficiency of the C-shaped heat exchange pipes 5 is further improved, and the improvement of the overall heat dissipation efficiency of the motor is facilitated.

Referring to fig. 1 to 15, optionally, a conveying cavity 702 is disposed inside the central rotating shaft 701, an annular inner wall of the conveying cavity 702 is a tapered structure with a tapered center higher than the left end and a tapered right end lower than the right end, cooling conveying grooves 703 are disposed at both the left end and the right end of the conveying cavity 702, a plurality of centrifugal oil injection holes 704 are uniformly circumferentially disposed in the middle of the cooling conveying grooves 703, the inside of the conveying cavity 702 is communicated with the inside of the motor sealed housing 1 through the centrifugal oil injection holes 704, the centrifugal oil injection holes 704 are disposed right opposite to the left end and the right end of the hollow winding coil 3, a central conveying pipe 8 is disposed in the middle of the central rotating shaft 701, a rotary conveying joint 801 is disposed at an outer end of the central conveying pipe 8, a rotor circulation conveying pipe 802 is disposed outside the rotary conveying joint 801, the rotor circulation conveying pipe 802 is communicated with the inside of the central conveying pipe 8 and rotatably connected with the rotary conveying joint 801, the rotary conveying joint 801 is communicated with the circulating conveying pump 105 through a rotor circulating conveying pipe 802, the middle of a central conveying pipe 8 is uniformly provided with a plurality of supporting conveying pipes 803 in a surrounding way in a circumferential state, the inner ends of the supporting conveying pipes 803 are fixedly connected to the center of the outer wall of the central conveying pipe 8, the outer ends of the supporting conveying pipes 803 are fixedly connected to the center of the annular inner wall of a conveying cavity 702, the middle of the supporting conveying pipes 803 is uniformly provided with a plurality of communicating conveying holes 804 along the axial direction, the central conveying pipe 8 is communicated with the conveying cavity 702 through the supporting conveying pipes 803 and the communicating conveying holes 804, a centrifugal adjusting column 805 is nested and slidably arranged inside the supporting conveying pipes 803, the outer end of the centrifugal adjusting column 805 is provided with a return spring 806, the motor mainly comprises a motor stator 2 and a permanent magnet rotor 7, the motor stator 2 and the permanent magnet rotor 7 are both arranged inside the motor sealed shell 1, the majority of the heat generated by the motor is generated by the motor stator 2, the rest of the heat generated by the permanent magnet rotor 7 is generated by the permanent magnet rotor 7, due to the magnetic field action and the mechanical friction, the permanent magnet rotor 7 can generate a large amount of heat when working, and the heat generated by the permanent magnet rotor 7 needs to be discharged as soon as possible to avoid the over-high temperature, the magnet in the permanent magnet rotor 7 is demagnetized, the permanent magnet rotor 7 is rotatably connected with the motor sealing shell 1 through the central rotating shaft 701, the inside of the central rotating shaft 701 is a hollow structure and is provided with a conveying cavity 702, and simultaneously, the inside of the central rotating shaft is also provided with a central conveying pipe 8, the circulating conveying pump 105 can convey cooling oil to the central conveying pipe 8 through the rotor circulating conveying pipe 802 and the rotary conveying joint and is conveyed to the inside of the conveying cavity 702 through the supporting conveying pipe 803 and the communicating conveying holes 804, so as to absorb the heat of the permanent magnet rotor 7 through the cooling oil conveyed therein, the cooling oil is conveyed to the front end and the rear end of the conveying cavity 702 and then conveyed to the cooling conveying groove 703, and is sprayed out from the centrifugal oil spray hole 704 through the centrifugal force generated by the rotation of the permanent magnet rotor 7, and the centrifugal oil spray hole 704 is arranged right opposite to the left end and the right end of the hollow winding coil 3, so that the cooling oil is sprayed to the inner side of the hollow winding coil 3, and provides heat dissipation for the hollow winding coil 3 together with the cooling oil flowing to the outer side of the hollow winding coil 3 from the end opening 204, thereby being beneficial to further improving the overall heat dissipation efficiency of the motor, and meanwhile, the cooling oil is conveyed to the conveying cavity 702 through the plurality of communicating conveying holes 804 on the supporting conveying pipe 803 to provide heat dissipation, and intercommunication delivery hole 804 evenly sets up along supporting conveyer pipe 803 axis direction, the axial that supports conveyer pipe 803 then converges with permanent magnet rotor 7's axial, thereby when permanent magnet rotor 7 rotates, it can slide to the outside to support the inside centrifugal adjustment post 805 of conveyer pipe 803, and permanent magnet rotor 7 rotational speed is faster, whole calorific capacity is also big more, centrifugal force is also big more simultaneously, the distance that centrifugal adjustment post 805 moved to the outside is also big more, thereby it is also more just more to support the intercommunication delivery hole 804 quantity that can communicate on the conveyer pipe 803, thereby can improve the delivery capacity of coolant oil and be radiating efficiency, vice versa, thereby centrifugal adjustment post 805 can be through permanent magnet rotor 7's holistic cooling efficiency of rotational speed automatically regulated, it is convenient nimble more during the use.

When in use, all pipelines of the motor are firstly connected, then current is introduced into the hollow winding coil 3 through the three-phase power supply line 302 and the three-phase bus ring 301, so that a constantly changing magnetic field is formed through the motor stator 2, the magnetic field of the motor stator 2 at the outer side drives the permanent magnet rotor 7 at the inner side to rotate, and further drives driving parts such as gears and wheels connected with the motor to rotate, the hollow flow guiding flat tube 4 filled with conductive circulating medium is integrally conducted when the motor works, meanwhile, most of the current is conducted by the hollow flow guiding flat tube 4 per se due to the skin effect of the current, a small part of the current is conducted by the conductive circulating medium which is directly contacted with the inside of the hollow flow guiding flat tube 4, so that the heat resistance generated by the hollow flow guiding flat tube 4 is directly absorbed, meanwhile, the conductive circulating medium per se can also generate heat when passing through the current, when the conductive circulating medium is kept standing in the hollow flow guiding flat tube 4 for working for a period of time to absorb enough heat, the horizontal screw 603 is driven to rotate by the circulating motor 604, the horizontal screw 603 drives the circulating piston 601 to translate by the central screw sleeve 602, the circulating piston 601 is located at the front end of the central circulating sleeve 6, at this time, the circulating piston translates from front to back, at this time, the inside of the central circulating sleeve 6 is filled with cooled conductive circulating medium, the connecting electromagnetic valves 606 arranged between the front and back ends of the circulating piston and the medium conveying pipe 605 are opened, the connecting electromagnetic valves 606 with the C-shaped heat exchange pipe 5 are closed, all the insulating partition valves 402 are also opened synchronously, so that the conductive circulating medium in the hollow flow guide flat pipe 4 can be pumped into the space at the front side of the circulating piston 601 in the central circulating sleeve 6 through the medium conveying pipe 605 at the front side, and the cooled conductive circulating medium filled in the space at the back side of the circulating piston 601 is synchronously pressed into the hollow flow guide flat pipe 4 through the medium conveying pipe 605, then all the insulating interval valves 402 are synchronously closed to complete the integral replacement of the conductive circulating medium in the hollow flow guiding flat tube 4, then the circulating piston 601 can move reversely from the rear end to the front end of the central circulating sleeve 6, at this time, the conductive circulating medium filled in the central circulating sleeve 6 is the conductive circulating medium after absorbing heat, the connecting electromagnetic valves 606 arranged between the front and rear ends of the circulating piston and the C-shaped heat exchange tube 5 are opened, the connecting electromagnetic valve 606 arranged between the central circulating sleeve and the medium conveying pipe 605 is closed, so that the conductive circulating medium filled in the central circulating sleeve 6 can be pressed into the C-shaped heat exchange tube 5 from the front end thereof, the conductive circulating medium in the C-shaped heat exchange tube 5 to complete heat dissipation is conveyed into the central circulating sleeve 6 from the rear end thereof, then all the connecting electromagnetic valves 606 are closed, so that the integral circulation of the conductive circulating medium in the C-shaped heat exchange tube 5 is completed, after the conductive circulating medium absorbing heat is conveyed to the C-shaped heat exchange tube 5, the heat can be dissipated through the heat exchange fins 501 on the outer side of the C-shaped heat exchange tube to reduce the temperature, meanwhile, the circulating conveying pump 105 can convey cooling oil into the annular cooling tube 502, so that the cooling oil is sprayed out from the plurality of cooling nozzles 503 on the annular cooling tube 502, so that the cooling oil is uniformly sprayed to the surfaces of the adjacent heat exchange fins 501 and the C-shaped heat exchange tube 5 to improve the heat dissipation efficiency of the C-shaped heat exchange tube 5, meanwhile, the circulating conveying pump 105 pumps the cooling oil into the stator circulating conveying pipe 206 and conveys the cooling oil into the spiral conveying groove 203, the cooling oil conveyed through the spiral conveying groove 203 can absorb certain heat of the motor stator 2 to dissipate the heat of the whole motor stator 2, then the cooling oil can be conveyed out from the end openings 204 at the front end and the rear end of the spiral conveying groove 203 and naturally flows downwards to the end part of the hollow winding coil 3, so as to radiate the hollow winding coil 3, meanwhile, the circulating delivery pump 105 delivers the cooling oil to the central delivery pipe 8 through the rotor circulating delivery pipe 802 and the transferring delivery joint, and delivers the cooling oil to the interior of the delivery cavity 702 through the supporting delivery pipe 803 and the communicating delivery hole 804, so as to absorb the heat of the permanent magnet rotor 7 by delivering the cooling oil therein, radiate the heat of the permanent magnet rotor 7, then the cooling oil is delivered to the front end and the rear end of the delivery cavity 702 to the cooling delivery groove 703, and is sprayed to the inner side of the hollow winding coil 3 through the centrifugal oil injection hole 704 by the centrifugal force of the rotation of the permanent magnet rotor 7, and provides the heat radiation for the hollow winding coil 3 together with the cooling oil flowing to the outer side of the hollow winding coil 3 from the end opening 204, finally the cooling oil naturally flows to the oil collection bottom shell 103 at the bottom of the motor sealed shell 1 by gravity, and delivers the collected cooling oil to the external automobile cooler for heat radiation through the circulating delivery pump 105, and then the cooling fluid is conveyed back to the stator circulating conveying pipe 206, the annular cooling pipe 502 and the rotor circulating conveying pipe 802, so that the whole heat dissipation circulating work of the motor is completed.

The invention provides a hollow winding internal circulation cooling type new energy automobile motor, a plurality of groups of hollow diversion flat tubes 4 made of conductor materials are used as winding coils of the motor, the hollow diversion flat tubes 4 are of a hollow structure, a hollow circulation channel 401 is arranged inside the hollow diversion flat tubes, and a conductive circulation medium such as sodium-potassium alloy is filled in the hollow diversion flat tubes 4, so that the hollow diversion flat tubes 4 and the conductive circulation medium inside the hollow diversion flat tubes can jointly form a lead to pass through current, the cross section area of the lead of the whole motor is not obviously reduced so as to reduce the whole resistance heating, the conductive circulation medium can directly contact with a coil structure inside a stator and is used as a conductor to absorb resistance heat, the conductive circulation medium is liquid, and can be exchanged and conveyed from the hollow circulation channel 401 to a C-type heat exchange tube 5 outside the stator through a central circulation sleeve 6, so that the heat is dissipated through the C-type heat exchange tube 5 as the conductive circulation medium, and then can improve the holistic radiating effect of motor to avoid the motor overheated, be favorable to improving the holistic rated continuous power of motor.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; features from the above embodiments, or from different embodiments, may also be combined, steps may be implemented in any order, and there are many other variations of the different aspects of one or more embodiments of the present description, as described above, which are not provided in detail for the sake of brevity.

While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations thereof will be apparent to those skilled in the art in light of the foregoing description.

It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.

Claims (10)

1. The utility model provides a cavity winding inner loop cooling formula new energy automobile motor which characterized in that includes:

the motor sealing shell is provided with a fixed bearing seat at the front end and the rear end;

the motor stator is arranged inside the motor sealing shell, a plurality of coil embedding grooves are uniformly arranged on the inner side of the motor stator in a surrounding mode, hollow winding coils are embedded inside the coil embedding grooves and are composed of a plurality of hollow flow guiding flat tubes, the hollow flow guiding flat tubes are made of conductive materials, hollow circulation channels are arranged inside hollow structures of the hollow flow guiding flat tubes, and conductive circulation media are filled inside the hollow circulation channels;

the C-shaped heat exchange tube is uniformly arranged outside the motor stator in a surrounding manner in a circumferential manner, and a plurality of heat exchange fins are uniformly arranged on the outer side of the C-shaped heat exchange tube in parallel at intervals;

the central circulation sleeve is arranged outside the motor stator in a surrounding mode, a circulation piston is arranged inside the central circulation sleeve, the front end and the rear end of the central circulation sleeve are communicated with the front end and the rear end of the C-shaped heat exchange pipe respectively, a plurality of medium conveying pipes are arranged at the front end and the rear end of the central circulation sleeve respectively, the front end and the rear end of the central circulation sleeve are communicated with the front end and the rear end of the hollow circulation channel respectively through the medium conveying pipes, an insulation spacing valve is arranged between each medium conveying pipe and the hollow circulation channel, and a connection electromagnetic valve is arranged between each central circulation sleeve and each C-shaped heat exchange pipe and each medium conveying pipe;

the permanent magnet rotor is nested in the inner side of the motor stator, a central rotating shaft is arranged at the center of the permanent magnet rotor, the front end and the rear end of the central rotating shaft are respectively nested in the inner side of the fixed bearing seat, the central rotating shaft is connected with the fixed bearing seat through the spacing bearing in a rotating mode, and the permanent magnet rotor is connected with the motor sealing shell through the central rotating shaft in a rotating mode.

2. The hollow winding internal circulation cooling type new energy automobile motor according to claim 1, wherein an oil collection bottom shell is arranged at the bottom of the motor sealing shell, a backflow conveying pipe is arranged in the middle of the oil collection bottom shell, a circulation conveying pump is arranged in the middle of the backflow conveying pipe, and the circulation conveying pump is communicated with the inside of the motor sealing shell through the backflow conveying pipe.

3. The hollow winding internal circulation cooling type new energy automobile motor according to claim 1, wherein a plurality of spiral conveying grooves are formed in the motor stator, end openings are formed in the front end and the rear end of each spiral conveying groove, a middle position communicating pipe is arranged in the middle of each spiral conveying groove, the centers of all the spiral conveying grooves are communicated with each other through the middle position communicating pipes, a stator circulation conveying pipe is arranged on the outer side of each middle position communicating pipe, and the middle position communicating pipes are communicated with the circulation conveying pump through the stator circulation conveying pipes.

4. The new energy automobile motor with the hollow winding internal circulation cooling function according to claim 1, wherein an insulating spacer is arranged between the hollow winding coil and the coil embedding groove, an NTC temperature sensor is arranged in the middle of the hollow winding coil, a three-phase collector ring is arranged at the outer end of the hollow winding coil, a three-phase power supply line is arranged in the middle of the three-phase collector ring, and the outer surface of the hollow flow guiding flat tube is coated with a spacer insulating paint.

5. The hollow winding internal circulation cooling type new energy automobile motor according to claim 1, wherein a ceramic conveying pipe is arranged in the middle of the insulation interval valve, the medium conveying pipe and the hollow circulation channel are communicated with each other through the ceramic conveying pipe, a ceramic sealing column is arranged in the middle of the ceramic conveying pipe, a communication opening is formed in the middle of the ceramic sealing column, a control motor is arranged at the outer end of the ceramic sealing column, and the ceramic sealing column and the ceramic conveying pipe are matched with each other in size.

6. The hollow winding internal circulation cooling type new energy automobile motor according to claim 1, wherein an annular cooling pipe is arranged between the heat exchange fins, a plurality of cooling nozzles are uniformly arranged on the outer side of the annular cooling pipe, the inside of the annular cooling pipe is communicated with the inside of the motor sealing shell through the cooling nozzles, and the annular cooling pipe is communicated with the circulation delivery pump.

7. The hollow winding internal circulation cooling type new energy automobile motor according to claim 1, wherein a plurality of central circulation sleeves are arranged on the outer side of the motor stator, the central circulation sleeves and the circulation piston are matched with each other in size, a central screw sleeve is arranged in the middle of the circulation piston, a horizontal screw rod is arranged on the inner side of the central screw sleeve, a circulation motor is arranged at the shaft end of the horizontal screw rod, and the horizontal center line of the horizontal screw rod is parallel to the horizontal center line of the central circulation sleeve.

8. The new energy automobile motor with internal circulation cooling of hollow windings according to claim 1, characterized in that a conveying cavity is arranged inside the central rotating shaft, the annular inner wall of the conveying cavity is a conical structure with a high conical center and low left and right ends, cooling conveying grooves are arranged at the left and right ends of the conveying cavity, a plurality of centrifugal oil spray holes are uniformly arranged around the middle of each cooling conveying groove in a circumferential state, the inside of the conveying cavity is communicated with the inside of the motor sealing shell through the centrifugal oil spray holes, and the centrifugal oil spray holes are arranged right opposite to the left and right ends of the hollow winding coil.

9. The hollow winding internal circulation cooling type new energy automobile motor according to claim 8, wherein a central conveying pipe is arranged in the middle of the central rotating shaft, a rotary conveying joint is arranged at the outer end of the central conveying pipe, a rotor circulation conveying pipe is arranged on the outer side of the rotary conveying joint, the rotor circulation conveying pipe is communicated with the inside of the central conveying pipe through the rotary conveying joint and is rotatably connected with the inside of the central conveying pipe, and the rotary conveying joint is communicated with the circulation conveying pump through the rotor circulation conveying pipe.

10. The hollow winding internal circulation cooling type new energy automobile motor according to claim 9, wherein a plurality of supporting conveying pipes are uniformly arranged in the middle of the central conveying pipe in a circumferential state in a surrounding manner, the inner ends of the supporting conveying pipes are fixedly connected to the center of the outer wall of the central conveying pipe, the outer ends of the supporting conveying pipes are fixedly connected to the center of the annular inner wall of the conveying cavity, a plurality of communicating conveying holes are uniformly formed in the middle of the supporting conveying pipe in the axial direction, the central conveying pipe is communicated with the conveying cavity through the supporting conveying pipes and the communicating conveying holes, a centrifugal adjusting column is arranged inside the supporting conveying pipes in a nested sliding manner, and a reset spring is arranged at the outer end of the centrifugal adjusting column.

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