CN207625388U

CN207625388U - Motor radiating structure

Info

Publication number: CN207625388U
Application number: CN201721822463.1U
Authority: CN
Inventors: 林中尉
Original assignee: Suzhou Fu Robot Co Ltd
Current assignee: Suzhou Fu Robot Co Ltd
Priority date: 2017-12-24
Filing date: 2017-12-24
Publication date: 2018-07-17
Anticipated expiration: 2027-12-24
Also published as: WO2019120312A1

Abstract

This technology provides one kind and can carry out directly cooling down to coil-conductor, shorten heat transfer circuit, improves radiating efficiency, improve the power density of motor and the motor radiating structure of reliability, it has the space contacted with the conductor for constituting electrical-coil, has the heat eliminating medium of flowing in the space.It since heat eliminating medium is in the space, is contacted indirectly with conductor directly or by the material of good heat conductivity, shortens heat dissipation path, avoided conductor and radiated by the poor insulator of heat conductivility, enhance heat dissipation effect.Using the motor of the structure, rated power can be increased substantially than conventional motor rated power, improve the power density and reliability of motor, be particularly suitable for the occasion high to the power density requirements of motor, such as onboard power motor.

Description

Motor radiating structure

Technical field

This technology is related to the radiator structure of motor, specifically, being that a kind of conductor to motor directly carries out heat dissipation or fast The motor radiating structure that speed radiates indirectly.

Background technology

The heat dissipation of motor is the key factor for restricting power of motor and playing, when motor works, coil, silicon steel sheet, rotor etc. It will generate heat, especially the winding wire of motor, presence and inductance effect due to resistance etc. will produce during operation Heat, when calorific value is more than heat dissipation capacity, motor temperature can be increased constantly, and motor is caused to burn out, therefore can only be by reducing electricity The rated power of machine or the method for shortening the motor working time, prevent motor overheating, this also significantly limits Motor Capability It plays.

The external stator electrical-coil of conventional structure, the heat dissipation path of external water-cooled machine are：Conducting wire->Insulating paper->Silicon steel Piece->Motor casing->Radiator（Water cooling）, the heat dissipation path of internal oil-cooled motor is：Conducting wire->Insulating paper->Silicon steel sheet->It is cooling Fluid, it can thus be seen that currently, the heat dissipation route of either any motor, conductor is all longer.

The heat dissipation of conventional motor is indirect heat loss through conduction, and referring to Fig. 1, coil 1 is placed in by the package of insulating paper 2 on iron core 3 In wire casing 4.In heat transfer link, the capacity of heat transmission of insulating paper is very poor, greatly hinders heat from conducting wire to silicon steel sheet Conduction, in addition, the thermal conductivity of silicon steel sheet is also limited, far away from the thermal conductivity of copper, aluminium, therefore, the heat-sinking capability of conventional motor is deposited In serious deficiency.

Invention content

The purpose of this technology, which is to provide one kind, can carry out coil-conductor directly to cool down, and shorten heat transfer circuit, carry High cooling efficiency improves the power density of motor and the motor radiating structure of reliability.

Motor radiating structure described in this patent, it has the space contacted with the conductor for constituting electrical-coil, the sky The interior heat eliminating medium with flowing.

The advantageous effect of this technology：Since heat eliminating medium is in the space, directly or by the material of good heat conductivity It is contacted indirectly with conductor, shortens heat dissipation path, avoided conductor and radiated by the poor insulator of heat conductivility, enhanced scattered Thermal effect.This type of cooling is properly termed as direct cooling.Using the motor of the structure, rated power work(more specified than conventional motor Rate can increase substantially, and improve the power density and reliability of motor, be particularly suitable for high to the power density requirements of motor Occasion, such as onboard power motor.

Heat eliminating medium can be recycled or not recycled.When recycling, heat eliminating medium is inhaled when by the space The heat for receiving conductor etc. after then flowing to the external flow passage cooling communicated with the space, then is flowed back into the space, is formed Heat eliminating medium circulates.

When heat eliminating medium does not recycle, such as using air as heat eliminating medium, heat eliminating medium is inhaled when by the space The heat for receiving conductor etc., then flows to the external direct emission communicated with the space.

As being further improved to the motor radiating structure, the space be space between conductor and conductor, In space between the hollow space in the space, conductor itself between conductor and iron core, conductor and insulator any one or It is several, that is to say, that the space is the space between space and/or conductor and iron core between conductor and conductor, and/or The hollow space of conductor itself, and/or the space between conductor and insulator.If heat eliminating medium in the space directly with Conductor contacts, which, which can be any type, can play cooling effect and will not lead to motor under certain condition The fluid of short circuit, such as：Liquid, gas etc..If heat eliminating medium is contacted with conductor indirectly in the space, such as space Interior setting hollow pipe, heat eliminating medium then can according to circumstances reduce the insulation performance of heat eliminating medium in hollow Bottomhole pressure.It is right There is the hollow conductor of hollow space in conductor itself, the hollow space flowing that heat eliminating medium can be directly in conductor.

As being further improved to the motor radiating structure, the sky being in direct contact with conductor is set in the space Heart pipe, heat eliminating medium is in hollow Bottomhole pressure.Setting hollow pipe is advantageous in that, for the medium of recycling, hollow pipe side Just it is connected with exterior line, forms the channel that heat eliminating medium circulates, the section of the hollow pipe can be any advantageous In the shape of heat transfer.

As being further improved to the motor radiating structure, the heat being in direct contact with conductor is set in the space Pipe.Heat pipe is a kind of existing heat-exchange device.It is converted using the liquid state of the refrigerant in heat pipe, and heat is spread out of.

As being further improved to the motor radiating structure, the conductor, which is surface, has protrusion and/or recess With the conductor of increasing heat radiation area.Certainly, cross-sectional area of conductor can be arbitrary shape, as circular cross-section conductor, rectangular section conductor, Flat segmental conductor, conductor can also be that hollow hollow conductor, surface are conducive to the various of heat dissipation with protrusion and/or recess etc. Conductor of shape, etc..

Not closed insulation is set as being further improved to the motor radiating structure, between coil and iron core Body, insulator, iron core, conductor constitute the space or insulator, adjacent conductor constitute the space.In other words, absolutely Edge body, iron core, conductor constitute the space jointly or between part.

The space is space, the part inside the space that partially or fully conductor is mutual, whole or local conductor Or any one or a few in the space between the wire casing cell wall on whole conductors and iron core.That is, the space is The partially or fully space inside the mutual space of conductor and/or whole or local conductor, and/or partially or fully lead The space between wire casing cell wall on body and iron core.

As being further improved to the motor radiating structure, setting closing insulator between coil and iron core, absolutely Edge body, adjacent conductor are common or part constitutes the space.

Description of the drawings

Fig. 1 is conventional motor radiating structure schematic diagram.

Fig. 2 is the motor radiating structure schematic diagram of embodiment 1.

Fig. 3 is hollow conductor schematic diagram.

Fig. 4, which is surface, has raised or sunken conductor schematic diagram.

Fig. 5 is the motor radiating structure schematic diagram of embodiment 2.

In figure, coil 1, insulating paper 2, iron core 3, wire casing 4, conductor 5, space 6, space 7, heat eliminating medium 8, heat pipe 9.

Specific implementation mode

Embodiment 1：

Motor radiating structure shown in Figure 2, coil 1 wrap up the wire casing being placed on iron core 3 by not closed insulator 2 In 4, it is respectively provided with the space 6 that insulator, iron core, conductor 5 surround in the interior outside of wire casing, between insulator, adjacent conductor Surround multiple spaces 7.The head end that heat eliminating medium 8 is located at iron core one end from space 6,7 flows into, from the tail end positioned at the iron core other end Outflow, heat eliminating medium is directly and conductive contact.When work, heat eliminating medium flows under pressure, is cooled down to conductor, dissipates Thermal medium under pressure, flow in the radiator for the outside being connected with space 6,7 tail ends, heat loss is fallen, and dissipates Thermal medium enters motor from the head end in space 6,7 again, constitutes cooling cycle.Heat eliminating medium 8, which can be any type, to be risen The fluid of electric motor short circuit to cooling effect and will not be caused under certain condition.Heat transfer route in this way is short, and cooling capacity is big It is big to improve, cooling heat eliminating medium, other than directly being cooled down to coil offer, at the same can to silicon steel sheet, magnet steel, other lead The offers cooling such as body.Using the motor of the structure, rated power can be increased substantially than conventional motor rated power, improve electricity The power density and reliability of machine are particularly suitable for the occasion high to the power density requirements of motor.

For the space of heat eliminating medium flowing, it can be the mutual space of conductor, can also be between conductor and iron core Space, the combination that both can also be, while further including the space of the formation of itself of conductor 5, such as use hollow conductor（Ginseng See Fig. 3）, hollow space flowing of the heat eliminating medium in conductor.Conductor 5 or surface have raised or sunken scattered to increase The conductor of hot area（Referring to Fig. 4）.

Space can directly circulate heat eliminating medium between conductor, can also indirect flows heat eliminating medium, such as：In winding Hollow pipe is set between conductor, is circulated for heat eliminating medium in hollow pipe.

Embodiment 2：

Motor radiating structure shown in Figure 5, the insulating paper 2 that coil 1 is closed wrap up the wire casing 4 being placed on iron core 3 In, multiple spaces 7 are surrounded between insulator, adjacent conductor.The evaporation ends of heat pipe 9 are extend into space 7, the condensation of heat pipe 9 End is outside iron core.Refrigerant be closed in it is middle in heat pipe rely on pressure flow, heat is conducted to refrigerant by tube wall.Utilize heat pipe The liquid state of interior refrigerant is converted, and conductor heat is spread out of.

Claims

1. motor radiating structure, it is characterized in that：It has the space contacted with the conductor for constituting electrical-coil, has in the space There is the heat eliminating medium of flowing.

2. motor radiating structure as described in claim 1, it is characterized in that：The space be space between conductor and conductor, In space between the hollow space in the space, conductor itself between conductor and iron core, conductor and insulator any one or It is several.

3. motor radiating structure as described in claim 1, it is characterized in that：The sky that setting is in direct contact with conductor in the space Heart pipe, heat eliminating medium is in hollow Bottomhole pressure.

4. motor radiating structure as described in claim 1, it is characterized in that：The heat that setting is in direct contact with conductor in the space Pipe.

5. motor radiating structure as described in claim 1, it is characterized in that：The conductor, which is surface, has recess and/or protrusion With the conductor of increasing heat radiation area.

6. motor radiating structure as described in claim 1, it is characterized in that：Not closed insulation is set between coil and iron core Body, insulator, iron core, conductor constitute the space or insulator, adjacent conductor constitute the space.

7. motor radiating structure as described in claim 1, it is characterized in that：The space is that partially or fully conductor is mutual Space, the space inside whole or local conductor, partially or fully in the space between the wire casing cell wall on conductor and iron core Any one or a few.