CN102208846A - Drive motor for battery electric vehicle - Google Patents
Drive motor for battery electric vehicle Download PDFInfo
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- CN102208846A CN102208846A CN2010101382325A CN201010138232A CN102208846A CN 102208846 A CN102208846 A CN 102208846A CN 2010101382325 A CN2010101382325 A CN 2010101382325A CN 201010138232 A CN201010138232 A CN 201010138232A CN 102208846 A CN102208846 A CN 102208846A
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- storage tank
- drive motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention provides a drive motor for a battery electric vehicle. The drive motor has high power density, a small volume, a light weight and high efficiency, and is realized by the following technical scheme that: the drive motor for the battery electric vehicle comprises an enclosure part, a stator part and a rotor part, wherein the enclosure part comprises a liquid cooling system; the liquid cooling system comprises a pipeline-shaped enclosure; more than two water storage holes independent of one another are axially formed in a body wall of the enclosure; a liquid uniform-distribution separating device is arranged at a water storage hole inlet at the front end of the enclosure; the enclosure comprises an inner cavity; the stator part is fixed in the inner cavity of the enclosure; and the rotor part is positioned on the middle part of the stator part.
Description
Technical field
The invention belongs to the technical field of pure electric automobile structure, relate in particular to the drive motors of pure electric automobile.
Background technology
It is reported that the drive motors that is used for electric automobile now on city's field boundary mainly contains frequency modulation motor and permanent magnetic brushless.The frequency modulation motor specific power is 0.2kw/kg to 0.44kw/kg; The permanent magnetic brushless specific power is 0.45kw/kg to 1kw/kg.Pure electric vehicle project as energy-saving and emission-reduction enforcement, need the motor of power of motor density greater than 1.5Kw/kg, the power of motor of equal volume has improved 3 times like this, 9 times of the also corresponding raisings of heat load of motor simultaneously, the unit volume loss that produces during the motor operation just increases, and causes that motor each several part temperature raises, so directly have influence on the life-span and the reliability of operation of motor, so, have only the new method of employing that motor is redesigned, could guarantee the motor safety operation.
In addition, the cooling system of motor in the prior art has and adopts air-cooledly, has and adopts liquid cooling.In the prior art, adopt the motor water route structure Design technical staff of liquid cooling mode to continue to use traditional water channel design view thought, allow cooling fluid in the motor water route, circulate 5～10 times, cause the temperature rise of delivery port water temperature.Though these technology can satisfy the cooling requirement of low-power machine (about 10kW).But concerning heavy-duty motor, just be not suitable for.Because if heavy-duty motor adopts traditional approach, water every circulation primary water temperature in water channel raises about 10 ℃, and that circulates continuously and will raise for 5～10 times 50～100 ℃, so just causes the electric machine temperature rise distributed pole inhomogeneous.It is bad to have heat radiation, temperature distributing disproportionation, the shortcoming that local temperature is too high.Therefore, the redesign of motor cooling system is a project important in the design of electrical motor.
Summary of the invention
The object of the present invention is to provide a kind of drive motors of pure electric automobile, power density is big, and volume is little, and is in light weight, the efficient height.
The present invention is achieved through the following technical solutions:
The drive motors of pure electric automobile includes cabinet parts, stator component and rotor part; Wherein, described cabinet parts includes liquid cooling system, and liquid cooling system includes duct-like casing; In the body wall of described casing, axially be provided with plural water storage independent of each other hole; The porch, front end water storage hole of described casing is provided with the uniform part flow arrangement of liquid; Described casing includes inner chamber, and stator component is fixed in the inner chamber of described casing; Rotor part is positioned at the middle part of described stator component.
Described liquid cooling system also includes: front end housing is airtight with front opening, the open rearward end place of described casing, and it is airtight with open rearward end to be provided with rear end cap; The front and back ends of the body wall of described casing is run through in described water storage hole; Described front end housing is provided with the preceding aqua storage tank of the annular irrigation canals and ditches shape that is communicated with described water storage hole front end, and rear end cap is provided with the back aqua storage tank of the annular irrigation canals and ditches shape that is communicated with rear end, described water storage hole; Preceding aqua storage tank is communicated with more than one water inlet, and back aqua storage tank is communicated with more than one delivery port; The uniform part flow arrangement of liquid is between preceding aqua storage tank and water storage hole front end.
Described rotor part includes axle and is positioned at the punching device of a periphery, and described punching device is formed by multi-disc rotor punching stack combinations; Described rotor punching is provided with the magnet installing hole, and magnet injects in the described magnet installing hole and installs and fixes.
Described stator component includes coil stationary frame and the coil that multi-disc stator punching stack combinations forms, and described coil stationary frame is fixed on the internal face of described casing; Described stator punching is provided with the coil groove, and described coil is wrapped on the described coil groove.
To sum up, the invention has the beneficial effects as follows:
The drive motors of pure electric automobile of the present invention, cabinet parts includes liquid cooling system, and rotor punching is provided with the magnet installing hole, and magnet injects in the described magnet installing hole and installs and fixes; Stator punching is provided with the coil groove, and described coil is wrapped on the described coil groove.When water or cooling fluid enter the annular of front end housing from two water inlets before the aqua storage tank, water is evenly from the water storage hole of the injection casing of the uniform part flow arrangement of liquid under the effect of hydraulic pressure, by the liquid uniform part flow arrangement place of casing direct current to the rear end, same because the hydraulic pressure effect, water can evenly flow out in the uniform part flow arrangement of this liquid, in the annular back aqua storage tank of rear end cap, finally the heat that produces with the motor operation flows out from delivery port.Adopt the liquid cooling system of pure electric automobile motor of the present invention, water in the motor water channel flows in the direct current mode, not in the circumference cocycle, and owing to use the uniform part flow arrangement of liquid, therefore the temperature rise of motor just has been evenly distributed, help improving the cooling of motor, guarantee the realization of high power density motor.The drive motors of pure electric automobile of the present invention, design power density be greater than 1.5Kw/kg, and satisfy below rated speed can permanent torque operation, at the above output-constant operation of rated speed.Speed adjustable range greatly, large starting moment is to satisfy the operating condition requirement of pure electric automobile.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the drive motors of pure electric automobile of the present invention;
Fig. 2 is the A-A cross-sectional view of Fig. 1;
Fig. 3 is the casing structure schematic diagram of the drive motors of pure electric automobile of the present invention;
Fig. 4 is the front end housing of drive motors of pure electric automobile of the present invention and the mounting structure schematic diagram of lead water plate;
Fig. 5 is the B-B cross-sectional view of Fig. 4;
Fig. 6 is the rear end cap structural representation of the drive motors of pure electric automobile of the present invention;
Fig. 7 is the local structure for amplifying schematic diagram of the drive motors of pure electric automobile of the present invention;
Fig. 8 is the back weather board structural representation of the drive motors of pure electric automobile of the present invention;
Fig. 9 is the rotor part structural representation of the drive motors of pure electric automobile of the present invention;
Figure 10 is the rotor punching structural representation of rotor part of the drive motors of pure electric automobile of the present invention;
Figure 11 is the stator component structural representation of the drive motors of pure electric automobile of the present invention;
Figure 12 is the stator laminating structure schematic diagram of stator component of the drive motors of pure electric automobile of the present invention.
Description of reference numerals:
1, water inlet, 2, delivery port, 3, front end housing, 31, preceding aqua storage tank, 4, aqueduct, 51, lead water plate, 52, the back weather board, 521, water-guiding hole, 6, casing, 61, water storage hole, 71, preceding sealing ring, 72, sealing ring, 8, rear end cap, 81, back aqua storage tank, 9, stator component, 91, stator punching, 911, the coil groove, 10, rotor part, 101, key, 102, magnet, 103, trim ring, 104, rotor punching, 105, axle, 106, bolt, 1041, the magnet installing hole.
Embodiment
The invention discloses a kind of drive motors of pure electric automobile,, include cabinet parts, stator component 9 and rotor part 10 as Fig. 1,5,6,7; Wherein, described cabinet parts includes liquid cooling system, and liquid cooling system includes duct-like casing 6; In the body wall of described casing 6, axially be provided with plural water storage independent of each other hole 61; 61 porch, front end water storage hole of described casing are provided with the uniform part flow arrangement of liquid; Described casing 6 includes inner chamber, and stator component 9 is fixed in the inner chamber of described casing 6; Rotor part 10 is positioned at the middle part of described stator component 9.
Described liquid cooling system also includes: front end housing 3 is airtight with front opening, the open rearward end place of described casing 6, and it is airtight with open rearward end to be provided with rear end cap 8; In the body wall of described casing 6, axially be provided with the front and back ends that the body wall of described casing 6 is run through in plural water storage independent of each other hole 61; Described front end housing 3 is provided with the preceding aqua storage tank 31 of the annular irrigation canals and ditches shape that is communicated with described water storage hole 61 front ends, and rear end cap 8 is provided with the back aqua storage tank 81 of the annular irrigation canals and ditches shape that is communicated with 61 rear ends, described water storage hole; Preceding aqua storage tank 31 is communicated with more than one water inlet 1, and back aqua storage tank 81 is communicated with more than one delivery port 2; Between preceding aqua storage tank 31 and water storage hole 61 front ends, be provided with a uniform part flow arrangement of liquid, between back aqua storage tank 81 and 1 rear end, water storage hole, be provided with a uniform part flow arrangement of liquid.
Casing 6 adopts frame structure, forms with aluminium alloy casting, is made up of inner ring, outer ring and muscle radially, increases the internal cavities in water storage hole like this, also helps increasing simultaneously the structural strength of casing.Several water storage holes on the casing contain abundant water to cool off operating motor after the motor assembling, the anti-drain process of soaking is made in casing casting back under HTHP.It is poor iron aluminium that casing adopts material, and this texture material is fine and closely woven, is not easy to produce sand holes, and is in light weight.
As Fig. 9,10, described rotor part 10 includes axle 105 and is positioned at the iron core apparatus of axle 105 peripheries, and described iron core apparatus is formed by multi-disc rotor punching 104 stack combinations; Described rotor punching 104 is provided with magnet installing hole 1041, and magnet 102 injects in the described magnet installing hole 1041 and installs and fixes.
Axle 105 is provided with key 101.
Preferably, every rotor punching 104 is provided with 8 magnet installing holes 1041, has 24 sections magnet and is fixed in the iron core apparatus.
Described satisfy run up, the motor rotor construction of big moment starting: the maximum speed of motor rotation reaches 6000rpm, and starting torque is 1000N.m.
As Figure 11,12, described stator component 9 includes coil stationary frame and the coil that multi-disc stator punching 91 stack combinations form, and described coil stationary frame is fixed on the internal face of described casing 6; Described stator punching is provided with coil groove 911, and described coil is wrapped on the described coil groove 911.
Stator punching adopts the B35A250 silicon steel sheet to make, in order to reduce the iron loss of motor, stator punching is when laminating, every certain angle that staggers (under the effect that laminates), 1-3 branch for example, first and the cauda stator punching angle that staggers is 5-15 °, accumulate the stator core that laminates certain-length like this after coil groove 911 just formed skewed stator slot.The effect of skewed stator slot is, can harmonic carcellation, reduce the torque fluctuation of motor, and reduce loss, improve motor unit volume power output.
As Fig. 1, described liquid cooling system includes two described water inlets 1 and two described delivery ports 2; Water inlet 1 radially is provided with between front end housing 3 and casing 6, is communicated with water inlet 1 and preceding aqua storage tank 31 by aqueduct; Sealing ring 71 seals before being provided with between front end housing 3 and the casing 6; Delivery port 2 radially is provided with between rear end cap 8 and casing 6, is communicated with intake-outlet 2 and back aqua storage tank 81 by aqueduct; Being provided with back sealing ring 72 between rear end cap 8 and the casing 6 seals.
As Fig. 2,3, water storage hole 61 is arranged in the body wall of casing 6, is provided with by the circumference array mode.Preferably, in the present embodiment, include 24 water storage holes 61.
As Fig. 4,5, the uniform part flow arrangement of liquid between preceding aqua storage tank 31 and water storage hole 61 front ends is a lead water plate 51, described lead water plate 51 integral body are the annulus laminated structure, the opening part of aqua storage tank 31 before being sealed on, and the width dimensions of lead water plate 51 is greater than the width dimensions of the opening of preceding aqua storage tank 31.
The area of the water-guiding hole of lead water plate 51 and less than the area of two water inlets 1 and, to guarantee the impulsive force of liquid flow.
Preferably, the area and the little 5%-10% of the area of the water-guiding hole of lead water plate 51 and ratio two water inlets 1.
As Fig. 6,7,8, the uniform part flow arrangement of liquid between back aqua storage tank 81 and 61 rear ends, water storage hole is a back weather board 52, described back weather board 52 integral body are the annulus laminated structure, be sealed on the opening part of back aqua storage tank 81, and the width dimensions of back weather board 52 is greater than the width dimensions of the opening of back aqua storage tank 81.
The cooling system of this motor comprises casing, two end caps, 2 water inlets, 2 delivery ports have some axial water storages independent of each other hole in the casing, an annular aqua storage tank is arranged in each end cap, be added with a weather board in the water route of end cap and casing, have some apertures on the weather board, require some two end cap to cover both ends respectively like this, 2 layers of sealing ring (internal layer of water channel is with outer) are housed between them at casing.Water enters the annular water guide road of end cap from two water inlets, in the aqua storage tank of front end housing, form certain hydraulic pressure, according to the special principle of Paasche, water injects the water storage hole of casing equably in some holes of weather board with same speed under the effect of hydraulic pressure, by the weather board place of casing direct current to the other end, same because the hydraulic pressure effect, water can flow out in even some holes from this weather board, in the water annulus of another end cap, finally the heat that produces with the motor operation flows out from two apopores on the end cap, form a uniform cooling system, realize water cooling motor.
The drive motors of pure electric automobile of the present invention is a kind of brushless, permanently drive motors, and is as follows with the frequency modulation motor technical parameter contrast of prior art:
| Project name | The frequency modulation motor of prior art | The drive motors of pure electric automobile | The technological progress contrast is described |
| Motor housing, end cap and temperature | 70 ℃ of 130 kilograms of temperature of cast iron housing | 50 ℃ of 90 kilograms of temperature of aluminum alloy casing | Weight reduces 60 kilograms, alleviates 40%; Under the temperature |
| Fall 20 ℃ and descend 32% | |||
| Stator (silicon steel sheet) and enamelled wire etc. | 160 kilograms | 48 kilograms | Weight reduces 102 kilograms, alleviates 68%; Temperature descends 20 ℃ and descends 32% |
| Rotor and axle core | 110 kilograms | 32 kilograms | Weight reduces 102 kilograms, alleviates 68%; Temperature descends 20 ℃ and descends 32% |
| Stator and rotor total weight | 270 kilograms of power density 0.44kw/kg. | 93 kilograms, power density 1.5kw/kg. | Weight reduces 197 kilograms, and permanent magnetic brushless weight only is 34% of frequency modulation motor; Temperature descends 20 ℃, descends 32% |
| The average efficiency of motor traffic coverage | 70% | 85% | Operational efficiency improves: 15% |
| The operation control of motor | Complicated | Simpler | Can reduce cost |
Above-mentioned listed specific implementation is nonrestrictive, to one skilled in the art, is not departing from the scope of the invention, and various improvement and the variation carried out all belong to protection scope of the present invention.For example, the shape of the quantity of quantity, water inlet and the delivery port of the concrete shape of casing, water-guiding hole, stator rotor punching and quantity etc.
Claims (10)
1. the drive motors of pure electric automobile includes cabinet parts, stator component (9) and rotor part (10); It is characterized in that: described cabinet parts includes liquid cooling system, and liquid cooling system includes duct-like casing (6); In the body wall of described casing (6), axially be provided with plural water storage independent of each other hole (61); The porch, front end water storage hole (61) of described casing is provided with the uniform part flow arrangement of liquid; Described casing (6) includes inner chamber, and stator component (9) is fixed in the inner chamber of described casing (6); Rotor part (10) is positioned at the middle part of described stator component (9).
2. the drive motors of pure electric automobile according to claim 1, it is characterized in that: described liquid cooling system includes: front end housing (3) is airtight with front opening, the open rearward end place of described casing (6), it is airtight with open rearward end to be provided with rear end cap (8); In the body wall of described casing (6), axially be provided with the front and back ends that the body wall of described casing (6) is run through in plural water storage independent of each other hole (61); Described front end housing (3) is provided with the preceding aqua storage tank (31) of the annular irrigation canals and ditches shape that is communicated with described water storage hole (61) front end, and rear end cap (8) is provided with the back aqua storage tank (81) of the annular irrigation canals and ditches shape that is communicated with rear end, described water storage hole (61); Preceding aqua storage tank (31) is communicated with more than one water inlet (1), and back aqua storage tank (81) is communicated with more than one delivery port (2); Between preceding aqua storage tank (31) and water storage hole (61) front end, be provided with a uniform part flow arrangement of liquid.
3. the drive motors of pure electric automobile according to claim 1 and 2 is characterized in that: described casing (6) adopts frame structure, forms with aluminium alloy casting, is made up of inner ring, outer ring and muscle radially.
4. the drive motors of pure electric automobile according to claim 3, it is characterized in that: described rotor part (10) includes axle (105) and is positioned at the iron core apparatus of axle (105) periphery, and described iron core apparatus is formed by multi-disc rotor punching (104) stack combinations; Described rotor punching (104) is provided with magnet installing hole (1041), and magnet (102) injects in the described magnet installing hole (1041) and installs and fixes.
5. the drive motors of pure electric automobile according to claim 4, it is characterized in that: the magnet installing hole (1041) on the described rotor punching for vertical diameter to the groove of remaining silent, respectively there is a trim ring (103) at the iron core apparatus two ends, it is fastening that two ends trim ring (103) is passed the bolt (106) of iron core again, and axle (105) is provided with key (101).
6. according to the drive motors of claim 4 or 5 described pure electric automobiles, it is characterized in that: described stator component (9) includes coil stationary frame and the coil that multi-disc stator punching (91) stack combinations forms, and described coil stationary frame is fixed on the internal face of described casing (6); Described stator punching is provided with coil groove (911), and described coil is wrapped on the described coil groove (911).
7. the drive motors of pure electric automobile according to claim 6, it is characterized in that: described stator punching adopts the B35A250 silicon steel sheet to make, stator punching when laminating, every angle 1-3 branch that staggers certain, first and the cauda stator punching angle that staggers is 5-15 °, forms skewed stator slot.
8. the drive motors of pure electric automobile according to claim 7, it is characterized in that: described liquid cooling system includes two described water inlets (1) and two described delivery ports (2); Water inlet (1) is positioned between front end housing (3) and the casing (6), radially is provided with, and is communicated with water inlet (1) and preceding aqua storage tank (31) by aqueduct; Being provided with preceding sealing ring (71) between front end housing (3) and the casing (6) seals; Delivery port (2) is positioned between rear end cap (8) and the casing (6), radially is provided with, and is communicated with intake-outlet (2) and back aqua storage tank (81) by aqueduct; Being provided with back sealing ring (72) between rear end cap (8) and the casing (6) seals.
9. the drive motors of pure electric automobile according to claim 8, it is characterized in that: described water storage hole (61) is arranged in the body wall of casing (6), is provided with by the circumference array mode; The uniform part flow arrangement of liquid before described between aqua storage tank (31) and water storage hole (61) front end is lead water plate (51), described lead water plate (51) integral body is the annulus laminated structure, be sealed on the opening part of preceding aqua storage tank (31), and the width dimensions of lead water plate (51) is greater than the width dimensions of the opening of preceding aqua storage tank (31).
10. the drive motors of pure electric automobile according to claim 9, it is characterized in that: described lead water plate (51) is provided with a plurality of water-guiding holes of arranging by the circumference array mode; The area of the water-guiding hole of lead water plate (51) and less than the area of two water inlets (1) and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101382325A CN102208846A (en) | 2010-03-29 | 2010-03-29 | Drive motor for battery electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101382325A CN102208846A (en) | 2010-03-29 | 2010-03-29 | Drive motor for battery electric vehicle |
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| CN102208846A true CN102208846A (en) | 2011-10-05 |
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| CN2010101382325A Pending CN102208846A (en) | 2010-03-29 | 2010-03-29 | Drive motor for battery electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113224863A (en) * | 2021-06-03 | 2021-08-06 | 哈尔滨理工大学 | Novel permanent magnet auxiliary synchronous reluctance motor structure |
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| CN113224863A (en) * | 2021-06-03 | 2021-08-06 | 哈尔滨理工大学 | Novel permanent magnet auxiliary synchronous reluctance motor structure |
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Application publication date: 20111005 |