CN104037983A

CN104037983A - Liquid-cooled rotary electric machine having cooling jacket with bi-directional flow

Info

Publication number: CN104037983A
Application number: CN201410076751.1A
Authority: CN
Inventors: B·D·钱伯林; A·纳吉
Original assignee: Remy Technologies LLC
Current assignee: Remy Technologies LLC
Priority date: 2013-03-04
Filing date: 2014-03-04
Publication date: 2014-09-10
Also published as: CN104037984B; CN104037984A; DE102014102632A1

Abstract

A liquid-cooled rotary electric machine (40, 140, 240, 340) including a jacket (70, 170, 270) defining a heat transfer surface (74) and a sleeve (72) defining a coolant containment surface (76). A fluid channel (78) having an entry (86) and an exit (88) is located between the heat transfer and coolant containment surfaces (74, 76), and traverses the heat transfer surface (74). The fluid channel (78) defines a flow path (80, 180, 280) for liquid coolant through the machine (40, 140, 240, 340) extending substantially circumferentially about an axis (64) and progressing in a direction parallel with the axis (64), with the flow path (80, 180, 280) progressing in opposite directions parallel to the axis (64). Also, a method of liquid-cooling a rotary electric machine (40, 140, 240, 340).

Description

There is the electric rotating machine of the liquid cools of the cooling jacket with two-way flow

The prioity claim of related application

The application requires the priority of following patent application: the series number that the name of submitting on March 4th, 2013 is called " electric rotating machine that LIQUID-COOLED ROTARY ELECTRIC MACHINE HAVING COOLING JACKET WITH BI-DIRECTIONAL FLOW(has the liquid cools of the cooling jacket with two-way flow) " is No.13/784,227 U.S. Patent application; The series number that the name of submitting on March 4th, 2013 is called " electric rotating machine that Liquid-Cooled Rotary Electric Machine Having Fluid Channel WITH AUXILIARY COOLANT GROOVE(has the liquid cools of the fluid passage of the auxiliary coolant grooves of band) " is No.13/784,390 U.S. Patent application; The series number that the name of submitting on March 4th, 2013 is called " electric rotating machine that Liquid-Cooled Rotary Electric Machine Having Axial End Cooling(has the cooling liquid cools of axial end portion) " is No.13/784,789 U.S. Patent application; And the name that on March 4th, 2013 submits to be called " Liquid-Cooled Rotary Electric Machine Having Heat Source-Surrounding FLUID Passage(have thermal source around the electric rotating machine of liquid cools of fluid passage) " series number be No.13/784,799 U.S. Patent application.

Technical field

The present invention relates to electric rotating machine, for example generator, alternating current generator and motor, it can rotate around an axis along single or contrary direction, particularly, the present invention relates to this electric rotating machine of liquid cools type.

Background technology

Electric rotating machine operates more and more under higher internal temperature, and more and more needs for such motor provides improved cooling, to improve their Performance And Reliability.Although air cooling electric rotating machine is commonly used, some operating environment of these motors can not make them self carry out good air cooling.Such environment may be for example provides less space to carry out air circulation or exchange around motor, motor is positioned to the parts of next-door neighbour's heating, this will adversely heat the cooling-air that is directed into motor, or surrounding air may comprise pollutant (for example dust, husk), they may stop up the path of cool air of motor, stop up the air stream through this path, and suppressed abundant cooling.

Be known that by electric rotating machine is included in and be used for specially, in the cooling circuit of cooling this motor other parts of (or have the liquid cools treated), carrying out liquid cools electric rotating machine.Conventionally, such loop comprises pump and heat exchanger, and this pump is for direct coolant flow through this loop, and this heat exchanger is for removing heat from cooling agent, and this cooling agent can be for example water, oil or glycol solution.Cooling agent is fed in the coolant entrance of motor under pressure, circulates through motor, and absorbs heat via convective heat transfer, and discharge from motor by coolant outlet, and motor coolant entrance and outlet provide motor to be connected to the position of cooling circuit.Such cooling circuit is well-known, not within the scope of the invention, and is not described further in this article.

Make the minimized in size of electric rotating machine, make the heat extraction of motor maximize, for its reliability and can be very crucial for long period of operation simultaneously.

Summary of the invention

According to the present invention, be provided for improving structure and the method for the liquid cools of the extra heat source of finding in electric rotating machine and/or such motor.

The invention provides a kind of electric rotating machine of liquid cools, it has stator and rotor, and this stator has central axis, this rotor by stator around, and rotate with respect to stator around central axis.Motor comprises chuck, and this chuck has internal volume, and stator and rotor are positioned in this internal volume, and chuck is communicated with around stator and with stator heat by conduction.Chuck defines radially outer heat transfer surface with respect to central axis.Motor comprises fluid passage, and this fluid passage has inlet port and exits mouth, at the inlet port of fluid passage with exit between mouth and extend, and crosses the heat transfer surface of chuck.Fluid passage defines for the flow path through the liquid coolant of motor, this flow path around central axis roughly along circumferentially extending, and at the inlet port of fluid passage with exit between mouth and advance along the direction parallel with central axis.Flow path for the liquid coolant through motor advances along the contrary direction parallel with central axis in the time that it crosses heat transfer surface.

Another aspect of the present invention is, motor also comprises sleeve, this sleeve defines inner radial cooling agent receiving surface around chuck setting and with respect to central axis, and fluid passage is positioned between the heat transfer surface of chuck and the cooling agent receiving surface of sleeve.

Another aspect of the present invention is, flow path around central axis roughly along circumferentially extending continuously.

Another aspect of the present invention is, extends independently with respect to around central axis, roughly edge is circumferential, and the flow path being limited by fluid passage advances along at least one direction parallel with central axis.

In addition, one aspect of the present invention is, extends independently with respect to around central axis, roughly edge is circumferential, and the flow path being limited by fluid passage advances along the both direction parallel with central axis.

Another aspect of the present invention is, the first fluid channel part that fluid passage comprises multiple general toroidal extends, and each first fluid channel part has two relative ends.Each first fluid channel part roughly extends along circumferential along each first fluid channel part around central axis between its corresponding two relative ends, and described multiple first fluid channel parts distribute vertically along central axis.Fluid passage also comprises multiple second fluid channel parts, and each second fluid channel part fluidly connects the end of a pair of first fluid channel part, and flow path advances in the direction parallel with central axis along each second fluid channel part.

Another aspect of the present invention is, the each axial adjacent end that fluidly connects a pair of first fluid channel part in multiple second fluid channel parts.

Another aspect of the present invention is, flow path advances on the common direction parallel with central axis along each in multiple second fluid channel parts.

Another aspect of the present invention is, the end of a pair of first fluid channel part fluidly connecting by second fluid channel part is roughly radially aimed at around central axis.

Another aspect of the present invention is, each first fluid channel part extends between its relative entrance end and outlet end, and each second fluid channel part fluidly connects entrance end and the outlet end of a pair of first fluid channel part, thereby described multiple first fluid channel part fluidly connects in the mode of series connection each other via multiple second fluid channel parts.

In addition, one aspect of the present invention is, the entrance end of a pair of first fluid channel part fluidly connecting by second fluid channel part and outlet end are adjacent vertically each other.In addition, one aspect of the present invention is, the entrance end of described multiple first fluid channel parts and outlet end are roughly radially aimed at around central axis, and are interspersed along the direction parallel with central axis between axially adjacent first fluid channel part.

Another aspect of the present invention is, fluid passage comprises the 3rd fluid passage part, and the 3rd fluid passage part has two relative ends, and along extending with the direction of central axis almost parallel.The 3rd fluid passage part is positioned between two relative ends of each first fluid channel part, and the end of a first fluid channel part in described multiple first fluid channel part is fluidly connected to an end of the 3rd fluid passage part.Another end of the 3rd fluid passage part is fluidly connected to the one in mouth that exits of the inlet port of fluid passage and fluid passage.

In addition, one aspect of the present invention is, the end of the different first fluid channel part in described multiple first fluid channel parts is fluidly connected to the another one in mouth that exits of the inlet port of fluid passage and fluid passage.

In addition, one aspect of the present invention is, the inlet port of fluid passage and exiting mouthful by the multiple interconnective fluid passage part fluid communication with each other by comprising first fluid channel part, second fluid channel part and the 3rd fluid passage part.Described multiple interconnective fluid passages part is connected to each other in the mode of series connection.

Another aspect of the present invention is, fluid passage comprises the 3rd fluid passage part, be connected to the end of a first fluid channel part in described multiple first fluid channel part the 3rd fluid passage segment fluid flow, flow path along the 3rd fluid passage part parallel with central axis and with the direction of the opposite direction along second fluid channel part on advance.

In addition, one aspect of the present invention is, flow path advances on the common direction parallel with central axis along all second fluid channel parts.

Another aspect of the present invention is, the inlet port of fluid passage and exiting mouthful is all positioned on the equidirectional of central axis with respect to rotor.

The present invention also provides a kind of method of liquid cools electric rotating machine.The method comprises the following steps: utilize liquid coolant flow to cross the heat transfer surface of the substantial cylindrical arranging around axis along the flow path being limited by fluid passage, this flow path roughly extends along circumferential around axis, and advances along the contrary direction parallel with axis inlet port and the exiting between mouth of fluid passage of fluid passage.

Another aspect of the present invention is, according to the method, flow path be roughly independently with respect to flow path along advancing of at least one direction parallel with axis along circumferential extension around axis.

Brief description of the drawings

By reference to the accompanying drawings, with reference to the explanation of following examples, the above-mentioned aspect of exemplary embodiment will become more apparent and will be better understood, wherein:

Fig. 1 is according to the front perspective view of the first embodiment of electric rotating machine of the present invention;

Fig. 2 is the rear view of the first embodiment electric rotating machine;

Fig. 3 is the front perspective view of the first embodiment electric rotating machine, and its case follower is removed;

Fig. 4 is the rear view of the first embodiment electric rotating machine, and its case follower is removed;

Fig. 5 is the rear view of the first embodiment electric rotating machine, and its case follower and rear covering are removed;

Fig. 6 is the fragmentary, top perspective view of the first embodiment electric rotating machine, and its case follower and rear covering are removed;

Fig. 7 is the cross-sectional view that the line 7-7 along Fig. 6 and 9 of the first embodiment electric rotating machine intercepts;

Fig. 8 is the cross-sectional view that the line 8-8 along Fig. 6 and 9 of the first embodiment electric rotating machine intercepts;

Fig. 9 is the rear end view that does not have the line 9-9 along Fig. 7 of the first embodiment electric rotating machine of rear covering to intercept;

Figure 10 is the partial cross-section vertical view of the first embodiment electric rotating machine, shows the flow path passing for liquid coolant;

Figure 11 is according to the front perspective view of the second embodiment of electric rotating machine of the present invention;

Figure 12 is the rear view of the second embodiment electric rotating machine;

Figure 13 is the front perspective view of the second embodiment electric rotating machine, and its case follower is removed;

Figure 14 is the rear view of the second embodiment electric rotating machine, and its case follower is removed;

Figure 15 is the rear view of the second embodiment electric rotating machine, and its case follower and rear covering are removed;

Figure 16 is the fragmentary, top perspective view of the second embodiment electric rotating machine, and its case follower and rear covering are removed;

Figure 17 is the cross-sectional view that the line 17-17 along Figure 16 and 19 of the second embodiment electric rotating machine intercepts;

Figure 18 is the cross-sectional view that the line 18-18 along Figure 16 and 19 of the second embodiment electric rotating machine intercepts;

Figure 19 is the rear end view that does not have the line 19-19 along Figure 17 of the second embodiment electric rotating machine of rear covering to intercept;

Figure 20 is the partial cross-section vertical view of the second embodiment electric rotating machine, shows the flow path passing for liquid coolant;

Figure 21 is the rear view of a third embodiment in accordance with the invention electric rotating machine, and its case follower and rear covering are removed;

Figure 22 is the fragmentary, top perspective view of the 3rd embodiment electric rotating machine, and its case follower and rear covering are removed;

Figure 23 is the cross-sectional view that the 3rd embodiment electric rotating machine intercepts along line 23-23 and the motor center axis of Figure 22;

Figure 24 is the cross-sectional view that the 3rd embodiment electric rotating machine intercepts along line 24-24 and the motor center axis of Figure 22;

Figure 25 is the rear end view that does not have the line 25-25 along Figure 23 of the 3rd embodiment electric rotating machine of rear covering to intercept;

Figure 26 is the decomposition partial cross-sectional side view of a fourth embodiment in accordance with the invention electric rotating machine;

Figure 27 is according to the front perspective view of the 5th embodiment of electric rotating machine of the present invention;

Figure 28 is the rear view of the 5th embodiment electric rotating machine;

Figure 29 is the front perspective view of the 5th embodiment electric rotating machine, and its case follower is removed;

Figure 30 is the rear view of the 5th embodiment electric rotating machine, and its case follower is removed;

Figure 31 is the rear view of the 5th embodiment electric rotating machine, and its case follower and rear covering are removed;

Figure 32 is the fragmentary, top perspective view of the 5th embodiment electric rotating machine, and its case follower and rear covering are removed;

Figure 33 is the cross-sectional view that the line 33-33 along Figure 32 and 35 of the 5th embodiment electric rotating machine intercepts;

Figure 34 is the cross-sectional view that the line 34-34 along Figure 32 and 35 of the 5th embodiment electric rotating machine intercepts;

Figure 35 is the rear end view that does not have the line 35-35 along Figure 33 of the 5th embodiment electric rotating machine of rear covering to intercept; And

Figure 36 is the partial cross-section vertical view of the 5th embodiment electric rotating machine, shows the flow path passing for liquid coolant.

Corresponding reference symbol shows to run through the corresponding part of some views.Although accompanying drawing has represented the embodiment of apparatus and method disclosed by the invention, accompanying drawing does not need to draw in proportion or by identical scale, and some feature may be exaggerated to illustrate better and explain the present invention.In addition,, in the accompanying drawing that shows sectional view, for the sake of clarity can omit the shade of each sectional element.Should be appreciated that any hatched omission is all only used to illustrate clearly object.

Embodiment

Embodiments of the invention are not exhaustive, do not limit the invention to disclosed precise forms in following detailed description yet.On the contrary, embodiment selects and is described as to make those skilled in the art can understand and understand principle of the present invention and enforcement.

Exemplary electric rotating machine embodiment shown in this article is the alternating current generator that band drives, but should be appreciated that alternatively, and they can be the driven of other type or drive electric rotating machine, for example generator or motor.

Fig. 1 to 10 shows the first embodiment electric rotating machine 40.Motor 40 comprises rotor 42 and stator 44(Fig. 7 and 8), between rotor and stator, carry out relative rotary motion.With reference to Fig. 1 and 2, motor 40 has substantial cylindrical housing 52, and this housing is provided with the first cooling agent counterpart 54 and the second cooling agent counterpart 56.As shown in the figure, liquid coolant is received in housing 52 via the first cooling agent counterpart 54, and this first cooling agent counterpart 54 is coolant entrances of motor 40; Liquid coolant is discharged from housing 52 via the second cooling agent counterpart 56, and this second cooling agent counterpart 56 is coolant outlets of motor 40.Be to be understood that, counterpart 54 and 56 can put upside down aspect its coolant entrance as motor 40 and outlet, result is to put upside down through the direction of the liquid coolant flow of motor, and relevantly with operation to electric machine structure also will put upside down similarly along the flow direction in the mobile path of liquid coolant such as entrance, outlet, inlet port and/or the feature and the cooling agent that exit mouthful.

For shown in embodiment, in the time of its installation and operation, provide fluid under pressure cooling agent by cooling agent supply hose (not shown) to entrance counterpart 54 from the source of supply of electric rotating machine 40 outsides, this cooling agent supply hose clamps or is otherwise fixedly connected to electric rotating machine, outlet counterpart 56 is connected to similarly cooling agent and returns to flexible pipe (not shown), this cooling agent returns to flexible pipe and transmits the cooling agent of discharging from motor 40, and this cooling agent is cooled subsequently.Conventionally, motor 40 is parts of the closed loop coolant system of well-known type, and this system comprises liquid coolant pump and heat exchanger (not shown).

Counterpart 54,56 can be formed by steel pipe, and is fixed on circular, rear covering 58 plane, removable, and this rear covering forms an axial end portion of cylindrical housings 52.Rear covering 58 is rigidity, and can be formed by steel plate materials, and this steel plate materials has aperture, and the axial medial end of counterpart 54,56 is inserted in described aperture, and is attached to covering 58 by for example solder brazing.Housing 52 also comprises circular, front covering 60 rigidity, plane, and this front covering also can be formed by steel plate materials.Front covering 60 is provided with center port, and axle 62 extends through this center port, and this axle 62 can rotate and be rotatably fixed to rotor 42 around central axis 64.Rotor 42 and axle 62 can be around axis 64 only along direction rotations, or rotate along both direction.In an illustrated embodiment, belt wheel 66 housing 52 outer rotatable be fixed to axle 62, to utilize band (not shown) to drive rotor 42.In housing 52 inside, axle 62 is supported by fore bearing and rear bearing 68,69, as shown in FIG. 7 and 8.

Motor 40 comprises substantial cylindrical chuck 70, this chuck and stator 44 thermal conductive communication, and a part for formation housing 52.Chuck 70 preferably for example, is formed by rigid material (aluminium) casting of high thermal conductivity, but can be also made of iron alternatively, and/or is stamping parts or weldment.Be disposed radially open-ended cylindrical sleeve 72 around chuck 70, this sleeve can for example, be formed by metal (steel or aluminium) or plasticity flaky material.Chuck 70 provides the radially outer heat transfer surface 74 of substantial cylindrical, and tubular sleeve 72 provides interactional columniform inner radial receiving surface 76.Between radially outer heat transfer surface 74 and inner radial receiving surface 76, be positioned with fluid passage 78, this fluid passage defines the flow path 80 for the liquid coolant through motor 40.In other words, fluid passage 78 is vertically between two relative axial end portions of tubular sleeve 72, and radially in the space between stacked radially outer and inner surface 74 and 76.At least a portion for the flow path 80 through the liquid coolant of motor 40 is followed fluid passage 78.

As shown in the figure, the interconnection recess 84 that the radially outer heat transfer surface 74 of the substantial cylindrical of chuck 70 has multiple microscler walls 82 and defined by wall 82.The radially outmost surface of wall 82 contacts with columniform, the level and smooth inner radial receiving surface 76 of sleeve 72, and this inner radial receiving surface there is no special feature.Thereby fluid passage 78 is radially positioned between the inside receiving surface 76 of sleeve and the bottom of recess 84.Flow path 80 is followed interconnection recess 84.As shown in the figure, the cross section of fluid passage 78 can be essentially rectangular, and shape can be roughly uniform, but can be also other shape and/or be heterogeneous.The hydraulic diameter of fluid passage 78 can change along flow path 80, to affect as required coolant flow and/or heat transfer conditions.

Chuck 70 and sleeve 72 are for example coordinated and are attached together in known manner by interference fit or heat, for example, by cooling jacket 70 and heating muff 72 before assembling, then after they are relative to each other located, allow their temperature equalization.Alternatively, they can pass through curling or welding, or utilize securing member (not shown), or are undertaken attached by other conventional means.In addition, it will be recognized by those of ordinary skills, do not adopt chuck 70 and the sleeve 72 of structure as shown in the figure, the radially outer heat transfer surface 74 that can be chuck there is no special feature, and the inner radial receiving surface 76 of sleeve is provided with the wall and the recess that define fluid passage 78.With reference to figure 7 and 8, seal 98 is arranged between chuck 70 and sleeve 72, in the axial outside of fluid passage 78, and the relative axial end portion of close sleeve 72, to prevent that cooling agent from leaking from motor 40.

In two relative ends of fluid passage 78, in the position near the rear axial end portion of chuck 70 along flow path 80, have fluid passage inlet port 86 and exit mouthfuls 88, this inlet port and the radially inner side that exits the portion that is tightly connected mouthful between chuck 70 and sleeve 72 extend through chuck 70.As mentioned above, according to the direction of the selected coolant flow along the flow path 80 through motor 40, inlet port 86 can be put upside down equally with the appointment of exiting mouth 88.In motor 40, fluid passage 78 comprises multiple first fluid channel parts 90 of annular substantially, and each first fluid channel part circumferentially extends around axis 64.First fluid channel part 90 is parallel to each other, and is parallel to the imaginary plane (not shown) vertical with axis 64.Fluid passage 78 also comprises multiple second fluid channel parts 92, and each second fluid channel part extends between the adjacent end 94 vertically of a pair of first fluid channel part 90.The entrance end 94 that each second fluid channel part 92 fluidly connects a pair of adjacent 90, one first fluid channel parts 90 of first fluid channel part in the mode of series connection is fluidly connected to the outlet end 94 of another first fluid channel part 90 by second fluid channel part 92.Fluid passage part 90 and 92 provides a series of serpentine path of being followed by coolant flowpaths 80.Thereby, be appreciated that fluid passage 78 around central axis 64 via first fluid channel part 90 along circumferentially extending, and advance vertically via second fluid channel part 92 in the direction along axis 64.Therefore, in motor 40, the flow path 80 that fluid passage 78 limits in the direction along central axis 64 (via second fluid channel part 92) with respect to around axis 64(via first fluid channel part 90) roughly advance independently along the flow path 180 circumferentially extending.

Fluid passage 78 also comprises that the 3rd fluid passage part 96, the three fluid passage parts microscler, substantial linear extend in the direction along central axis 64.As shown in the figure, an end in two relative ends of fluid passage part 96 is fluidly connected to fluid passage inlet port 86, and another end is fluidly connected to the front covering 60 of approaching most of first fluid channel part 90 and away from the end 94 of fluid passage inlet port 86.As mentioned above, multiple first fluid channel parts 90 fluidly connect in the mode of series connection by multiple second fluid channel parts 92, to limit flow path 80.As shown in the figure, mouthfuls 88 outlet end that approaches rear covering 58 most 94 places that are positioned at annular first fluid channel part 90 are exited in fluid passage.Thereby, fluid passage inlet port 86 and exit mouthfuls 88 in motor 40 by fluid passage part 90,92 and 96 fluid communication with each other that are connected in series.In some unshowned embodiment, the width of the fluid passage 78 of any restriction in fluid passage part 90,92 and/or 96, can separate partly or integrally along fluid path length, to provide parallel subchannel along flow path as required.

Conventionally, cylindrical chuck 70 has internal volume and the axial end portion part 100 at the rear portion place of motor 40.The axial end portion part 100 of chuck is an axial end portion of the chuck internal volume at enclosed rotor 42 and stator 44 places partly.Fluid chamber 102 is limited by the wall 104 of the axial end portion part 100 of chuck, and is fluidly connected to fluid passage 78.As shown in the figure, fluid chamber 102 is connected to fluid passage 78 via fluid passage inlet port 86.In alternative unshowned embodiment, fluid chamber 102 can exit mouth 88 via fluid passage and be connected to fluid passage 78.

Wall 104 and rear covering 58 form the fluid passage 106 of annular substantially, and this fluid passage 106 extends between the first and second openings 108,110 of fluid chamber 102 and fluid passage 106.Fluid passage 106 also defines flow path 80.As shown in the figure, the first opening 108 is positioned at the axial medial end place of the first cooling agent counterpart 54, and as mentioned above, this first cooling agent counterpart 54 is coolant entrances of motor 40.Alternatively, the first opening 108 of fluid chamber 102 can be arranged in the cylindrical outer wall of chuck 70, and the first cooling agent counterpart 54 is coupled in this outer wall, instead of is fixed to covering 58 as mentioned above and as shown in the figure.In so alternative unshowned embodiment, coolant entrance counterpart radially extends from motor 40, instead of is carried and extended vertically from covering 58 by covering 58.The liquid coolant being received in fluid chamber 102 via the first counterpart 54 and the first opening 108 is circlewise directed to second opening 110 along flow path 80 through fluid passage 106 around central axis 64.In an illustrated embodiment, the second opening 110 is fluidly connected to the inlet port 86 of fluidic distribution passages 78.

The axial end portion part 100 of chuck is also provided with port one 12, and what this port one 12 was fluidly connected to fluid passage 78 exits mouthfuls 88, as illustrated best in Fig. 8.Port one 12 is fluidly isolated with fluid chamber 102 by liner or seal 114, this liner or seal be the connecting portion between sealed jacket 70 and rear covering 58 also, with prevent liquid coolant from fluid passage 106 radially to external leakage or radially to internal leakage.

Be provided with the cavity 116 being formed by the wall 104 of the axial end portion part of chuck at the radially inner side of annular fluid chamber 102.Cavity 116 substantially by seal 114 and fluid chamber 102 around.Cavity 116 and chamber 102 are by carrying out heat by conduction connection by their separated walls 104.For the thermal source 118 of power electronic device module 120 forms is arranged in cavity 116, and be communicated with wall 104 heat by conductions.Power electronic device 120 has suitable structure, and be type known in association area, it is for controlling the counterrotating electric energy causing between rotor 42 and stator 44, or for controlling the electric energy being produced by their relative rotation, determines as the case may be.Axle rear bearing 69 is supported in the bearing mounting portion 122 being limited by the wall 104 of the axial end portion part 100 of chuck, is another thermal source 118 of motor 40.

The heat energy that can transmit by the wall 104 of the axial end portion part of chuck that comes from thermal source 118 is enough delivered to liquid coolant along flow path 80 mode with convection current in fluid passage 106.Therefore, from the heat of stator 44 with from for example power electronic device module 120 of extra heat source 118(and/or rear bearing 69) heat energy enough be delivered to liquid coolant via the cylindrical wall of chuck 70 and the axial end portion part 100 of chuck in the mode of convection current along flow path 80.

From accompanying drawing and above explanation, be appreciated that, flow path 80 for the liquid coolant through motor 40 starts from the first cooling agent counterpart 54 places, extends and extends through fluid passage 78, and end at the second cooling agent counterpart 56 places along annular fluid path 106.More specifically, the liquid coolant being received in motor 40 by coolant entrance 54 is received in fluid chamber 102 via the first opening 108, flow to the second opening 110 along annularly flow by fluid passage 106, enter the inlet port 86 of fluidic distribution passages 78 by the second opening 110, and the entrance end 94 of continuing the connection that approaches front covering 60 most that advances to first fluid channel part 90 being upward through the 3rd fluid passage part 96 along the side of central axis 64.Liquid coolant in this first fluid channel part 90 around axis 64 along circumferentially chuck 70 and sleeve 72 interactional surperficial 74,76 between, in the chuck recess 84 being defined by chuck wall 82, flow.In the time that liquid coolant arrives the relative outlet end 94 of first fluid channel part 90, it is next in the entrance end 94 of roughly continuing vertically to advance to vertically axially adjacent first fluid channel part 90 in 64 direction via second fluid channel part 92, liquid coolant along this adjacent first fluid channel part around axis 64 the relative outlet end 90 along circumferential flow to this adjacent first fluid channel part 90.The flow path 80 of liquid coolant continues across the first and second parts 90,92 of fluid passage 78 that connect with series system by this way, until arrive fluid passage 78 exit mouthfuls 88.Cooling agent flows out from fluid passage 78 by exiting mouth 88, and flow to port one 12, and cooling agent passes through the second cooling agent counterpart 56 outflow motors 40 from this port one 12.With reference to figure 9 and 10, the described flow path 80 use directivity arrows for the liquid coolant through motor 40 represent.Alternatively, port one 12 can be positioned in the cylindrical outer wall of chuck 70, and wherein the second cooling agent counterpart 56 is coupled in this outer wall, instead of is fixed to covering 58 as mentioned above and as shown in figure.In so alternative unshowned embodiment, coolant outlet counterpart radially extends from motor 40, instead of is carried and extended vertically from covering 58 by covering 58.

Figure 11 to 20 shows the second embodiment electric rotating machine 140, and except shown in accompanying drawing and as herein described, this second embodiment electric rotating machine is substantially the same with the first embodiment electric rotating machine 40 in structure, operation and function.The motor 140 of the second embodiment and the visibly different specific characteristic of corresponding, character pair the first embodiment motor 40 are with representing that the relevant Reference numeral of individual features in the first embodiment motor 40 adds that the Reference numeral of numeral 100 represents.

The motor 140 of the second embodiment comprises substantial cylindrical housing 152, and this housing 152 is provided with the first cooling agent counterpart 154 and the second cooling agent counterpart 56.As shown in the figure, liquid coolant is received in housing 152 via the first cooling agent counterpart 154, and this first cooling agent counterpart 154 is coolant entrances of motor 140; Liquid coolant is discharged from housing 152 via the second cooling agent counterpart 56, and this second cooling agent counterpart 56 is coolant outlets of motor 140.As above in conjunction with described in the first embodiment motor 40, should be appreciated that counterpart 154 and 56 is becoming aspect the coolant entrance of motor 140 or coolant outlet and can put upside down, result is also put upside down through the direction of the liquid coolant flow of motor.With putting upside down same such as entrance, outlet, inlet port and/or the feature that exits mouthful of the directional correlation of the coolant flow in the path of flowing along liquid coolant.The second embodiment motor 140 can replace the first embodiment motor 40 in liquid cooling loops, wherein provide fluid under pressure cooling agent from the source of supply of electric rotating machine 140 outsides to entrance counterpart 154 similarly, outlet counterpart 56 is connected to similarly cooling agent and returns to flexible pipe (not shown).

Counterpart 154 self is structurally identical with counterpart 54, and to be connected to removable rear covering 158 with the similar mode of counterpart 54 of rear covering 58; Rear covering 158 self is structurally similar to rear covering 58, and the main difference between them is the relevant position of counterpart 54 and 154.As illustrated best in Figure 12 and 14, cooling agent counterpart 154 is medially positioned on circular covering 158, with roughly coaxial line of central axis 64.

Motor 140 comprises substantial cylindrical chuck 170, this chuck and stator 44 thermal conductive communication, and a part for formation housing 152.The material of chuck 170 and with the relation of stator 44 substantially as above about as described in the chuck 70 of the first embodiment motor 40.In addition, chuck 170 and cylindrical sleeve 72 coordinate to limit fluid passage 78, as above about as described in motor 40.Fluid passage 78 defines the flow path 180 for the liquid coolant through motor 140.

With reference to figure 15-19, substantial cylindrical chuck 170 has the axial end portion part 200 at internal volume and the rear portion place in motor 140, this axial end portion part 200 is sealed the axial end portion of the internal volume of chuck, and rotor 42 and stator 44 are arranged in this internal volume.Fluid chamber 202 is limited by the wall 204 of the axial end portion part 200 of chuck, and fluid chamber 202 is fluidly connected to above-mentioned fluid passage 78 via inlet port 86.The wall 204 of the axial end portion part 200 of chuck and covering 158 form roughly spiral fluid passage 206, and this fluid passage 206 extends between the first and second openings 208,210.The first opening 208 is positioned at the axial medial end place of the first cooling agent counterpart 154, and this first cooling agent counterpart 154 is coolant entrances of motor 140.The liquid coolant being received in fluid chamber 202 via the first cooling agent counterpart 154 is directed to second opening 210 along flow path 180 through helical type path 206 in these central axis 64 outsides around central axis 64.The second opening 210 is fluidly connected to the inlet port 86 of fluidic distribution passages 78.Be similar to the axial end portion part 100 of the chuck of motor 40, the axial end portion part 200 of chuck is provided with port one 12, and what this port one 12 was fluidly connected to fluid passage 78 exits mouthfuls 88.Port one 12 is fluidly isolated with fluid chamber 202 by liner or seal 214, and this liner or seal be the connecting portion between sealed jacket 170 and removable rear covering 158 also, to prevent that liquid coolant from leaking from fluid chamber 202.

The axial end portion part 200 of chuck be provided with the general plane that formed by the wall 204 of the axial end portion part of chuck, axial inner surface 216.Surface 216 and fluid chamber 202 are by carrying out heat by conduction connection by their separated walls 204.For the first thermal source 218 abutment surfaces 216 of power electronic device module 220 forms arrange, and be communicated with wall 204 heat by conductions.Power electronic device 220 has suitable structure, and be type known in association area, it is for controlling the counterrotating electric energy causing between rotor 42 and stator 44, or for controlling the electric energy being produced by their relative rotation, determines as the case may be.Axle rear bearing 69 is supported in the bearing mounting portion 222 being limited by the wall 204 of the axial end portion part 200 of chuck, is another thermal source 218 of motor 140.

The heat energy that can transmit by the wall 204 of the axial end portion part of chuck that comes from thermal source 218 is enough delivered to liquid coolant along flow path 180 mode with convection current in fluid passage 206.Therefore, from the heat of stator 44 with from for example power electronic device module 220 of extra heat source 218(and/or rear bearing 69) heat energy enough be delivered to liquid coolant via the cylindrical wall of chuck 170 and the axial end portion part 200 of chuck in the mode of convection current along flow path 180.

From accompanying drawing and above explanation, be appreciated that, flow path 180 for the liquid coolant through motor 140 starts from the first cooling agent counterpart 154 places, extends and extends through fluid passage 78, and end at the second cooling agent counterpart 56 places along spirality fluid path 206.More specifically, the liquid coolant being received in motor 140 by coolant entrance 154 is received in fluid chamber 202 via the first opening 208, flow through fluid passage 206 around axis 64 and in axis 64 outsides, enter the inlet port 86 of fluidic distribution passages 78 by the second opening 210, and be upward through the entrance end 94 that the 3rd fluid passage part 96 continues the connection that approaches front covering 60 most that advances to first fluid channel part 90 along the side of central axis 64, described in the first embodiment motor 40.Liquid coolant in this first fluid channel part 90 around axis 64 along circumferentially chuck 170 and sleeve 72 interactional surperficial 74,76 between, in the chuck recess 84 being defined by chuck wall 82, flow.As mentioned above, in the time that liquid coolant arrives the relative outlet end 94 of first fluid channel part 90, it is next roughly along the entrance end 94 of continuing vertically to advance to axially adjacent first fluid channel part 90 in the direction of axis 64 via second fluid channel part 92, liquid coolant arrives the relative outlet end 90 of this adjacent first fluid channel part 90 along circumferential flow around axis 64 along this adjacent first fluid channel part, described in the first embodiment motor 40.The flow path 180 of liquid coolant continues across the first and second parts 90,92 of fluid passage 78 that connect with series system by this way, until arrive fluid passage 78 exit mouthfuls 88.Cooling agent flows out from fluid passage 78 by exiting mouth 88, and flow to port one 12, and cooling agent passes through the second cooling agent counterpart 56 outflow motors 140 from this port one 12.With reference to Figure 19 and 20, the described flow path 180 use directivity arrows for the liquid coolant through motor 140 represent.Alternatively, the first opening 208 of fluid chamber 202 can be arranged in the cylindrical outer wall of chuck 170, and the first cooling agent counterpart 154 is coupled in this outer wall, instead of is fixed to covering 158 as mentioned above and as shown in the figure.In addition, alternatively, port one 12 can be positioned in the cylindrical outer wall of chuck 170, and wherein the second cooling agent counterpart 56 is coupled in this outer wall, instead of is fixed to covering 158 as mentioned above and as shown in figure.In so alternative unshowned embodiment, coolant entrance and outlet counterpart radially extend from motor 140, instead of are carried and extended vertically from covering 158 by covering 158.

Figure 21 to 25 shows the 3rd embodiment electric rotating machine 240, and except shown in accompanying drawing and as herein described, this second embodiment electric rotating machine is also substantially the same with the first embodiment electric rotating machine 40 in structure, operation and function.The motor 240 of the second embodiment and the visibly different specific characteristic of corresponding, character pair the first embodiment motor 40 are with representing that the relevant Reference numeral of individual features in the first embodiment motor 40 adds that the Reference numeral of numeral 200 represents.The outer appearnce of motor 240 is similar to the outward appearance of motor 40 and 140, but for the position of its removable rear covering 258, be similar to respectively the first cooling agent counterpart 54,154 and the rear covering 58,158 of motor 40,140 for coolant entrance counterpart 254 in other mode.The substantial cylindrical housing 252 of the 3rd embodiment motor 240 also comprises coolant outlet 56.As above in conjunction with described in the first and second embodiment motors 40,140, be to be understood that, the first and second cooling agent counterparts 254,56 of the 3rd embodiment motor 240 are fluidly connected to motor 240 remainder of liquid cooling loops, and can put upside down, result is also put upside down through the direction of the liquid coolant flow of motor.With putting upside down same such as entrance, outlet, inlet port and/or the feature that exits mouthful of the directional correlation of the coolant flow in the path of flowing along liquid coolant.

The substantial cylindrical chuck 270 of motor 240 forms a part for housing 252, and is similar to the chuck 70 of the first embodiment motor 40.Chuck 270 is communicated with stator 44 heat by conductions, and coordinates between them, to limit fluid passage 78 with cylindrical sleeve 72, as above about as described in motor 40 and 140.Fluid passage 78 defines the flow path 280 for the liquid coolant through motor 240.

Substantial cylindrical chuck 270 has the axial end portion part 300 at internal volume and the rear portion place in motor 240, and this axial end portion part 300 is partly sealed the axial end portion of the internal volume of chuck, and rotor 42 and stator 44 are arranged in this internal volume.Fluid chamber 302 is limited by the wall 304 of the axial end portion part 300 of chuck, and fluid chamber 302 is fluidly connected to above-mentioned fluid passage 78 via inlet port 86.Wall 304 and removable rear covering 258 are formed on the generally'S '-shaped fluid passage 306 extending between the first and second openings 308,310.The first opening 308 is positioned at the axial medial end place of the first cooling agent counterpart 254, and this first cooling agent counterpart 154 is coolant entrances of motor 240.The liquid coolant being received in fluid chamber 302 via the first cooling agent counterpart 254 is directed into the second opening 310 along helical type flow path 280 through fluid passage 306.The second opening 310 is fluidly connected to the inlet port 86 of fluidic distribution passages 78.Be similar to the axial end portion part 100 of the chuck of motor 40, the axial end portion part 300 of chuck is provided with port one 12, and what this port one 12 was fluidly connected to fluid passage 78 exits mouthfuls 88.Port one 12 is fluidly isolated with fluid chamber 302 by liner or seal 314, and this liner or seal be the connecting portion between sealed jacket 270 and removable rear covering 258 also, to prevent that liquid coolant from leaking from fluid chamber 302.

The first and second cavitys 316,317 are limited by the wall 304 of the axial end portion part 300 of chuck, and each cavity roughly by the part of S shape fluid chamber 302 around, this part is extended and they are separated from one another between cavity 316,317.Each corresponding cavity 316,317 and chamber 302 are by carrying out heat by conduction connection by their separated walls 304.The thermal source 318 that is the first power electronic device module 320 forms is arranged in the first cavity 316, and is communicated with wall 304 heat by conductions of its restriction.Another thermal source 318 that is the second power electronic device module 321 forms is arranged in the second cavity 317, and is communicated with wall 304 heat by conductions of its restriction.Each power electronic device module 320,321 has suitable structure, and be well-known type in association area, it is for controlling the counterrotating electric energy causing between rotor 42 and stator 44, or for controlling the electric energy being produced by their relative rotation, determine as the case may be.The S shape pattern of fluid passage 306 allows liquid coolant to be delivered on three sides of each module 320,321, to the heat extraction of module is maximized for given thermal source Package size by allowing maximum cooling agents to contact with wall 304.In addition, axle rear bearing 69 is supported in the bearing mounting portion 322 being limited by the wall 304 of the axial end portion part 300 of chuck, also can be used as thermal source 318 in 240 operating periods of motor.

The heat energy that can transmit by the wall 304 of the axial end portion part of chuck that comes from thermal source 318 is enough delivered to liquid coolant along flow path 280 mode with convection current in fluid passage 306.Therefore, from the heat of stator 44 with from extra heat source 318(for example power electronic device module 320,321 and/or rear bearing 69) heat energy enough be delivered to liquid coolant via the cylindrical wall of chuck 270 and the axial end portion part 300 of chuck in the mode of convection current along flow path 280.

From accompanying drawing and above explanation, be appreciated that, flow path 280 for the liquid coolant through motor 240 starts from the first cooling agent counterpart 254 places, extends and extends through fluid passage 78, and end at the second cooling agent counterpart 56 places along S shape fluid passage 306.More specifically, the liquid coolant being received in motor 240 by coolant entrance 254 is received in fluid chamber 302 via the first opening 308, along along circumferentially around each cavity 316,317 and the helical type fluid passage 306 substantially extending around each cavity 316,317 flow, and enter the inlet port 86 of fluid passage 78 by the second opening 310.In fluid passage 78, cooling agent is being upward through the 3rd fluid passage part 96 along the side of central axis 64, and the entrance end 94 fluidly connecting that approaches front covering 60 most of continuing to advance to first fluid channel part 90, described in the first and second embodiment motors 40,140.Liquid coolant in this first fluid channel part 90 around axis 64 along circumferentially chuck 270 and sleeve 72 interactional surperficial 74,76 between, in the chuck recess 84 being defined by chuck wall 82, flow.In the time that liquid coolant arrives the relative outlet end 94 of first fluid channel part 90, it is next roughly along the entrance end 94 of continuing vertically to advance to axially adjacent first fluid channel part 90 in the direction of axis 64 via second fluid channel part 92, liquid coolant arrives the relative outlet end 90 of this adjacent first fluid channel part 90 along circumferential flow around axis 64 along this adjacent first fluid channel part, described in the first and second embodiment motors 40,140.The flow path 280 of liquid coolant continues across the first and second parts 90,92 of the fluid passage 78 connecting with series system by this way, exit mouthfuls 88 through fluid passage 78, advance to port one 12, and leave motor 240 by the second cooling agent counterpart 56.With reference to Figure 25, the described flow path 280 use directivity arrows for the liquid coolant through motor 240 represent.Alternatively, the first opening 308 of fluid chamber 302 can be arranged in the cylindrical outer wall of chuck 270, and the first cooling agent counterpart 254 is coupled in this outer wall, instead of is fixed to covering 258 as mentioned above and as shown in the figure.In addition, alternatively, port one 12 can be positioned in the cylindrical outer wall of chuck 170, and wherein the second cooling agent counterpart 56 is coupled in this outer wall, instead of is fixed to covering 258 as mentioned above and as shown in figure.In so alternative unshowned embodiment, coolant entrance and outlet counterpart radially extend from motor 240, instead of are carried and extended vertically from covering 258 by covering 258.

Figure 26 shows the part with similar the 4th embodiment electric rotating machine 340 of the 3rd embodiment motor 240, comprises alternative unshowned modification, and wherein coolant entrance and outlet counterpart radially extend from the cylindrical wall of chuck.But in motor 340, similar the first and second power electronic device modules the 420, the 421st of power electronic device module 320,321 with the second embodiment motor 240, are installed to the thermal source 418 on its removable rear covering 358.The rear covering 358 of motor 340 is parts of its housing 352, is similar to the rear covering 258 of motor 240 in other side.Power electronic device 420,421 is received in the cavity 316,317 of chuck 270, and these thermals source 418 are communicated with wall 304 heat by conductions of the axial end portion part 300 of chuck, described in the 3rd embodiment motor 240.Rear bearing 69 is another thermals source 418 of motor 340.According to disclosing of the 4th embodiment motor 340, can expect with other electric machinery disclosed herein like but there is the electric rotating machine embodiment (not shown) that is arranged on the thermal source on covering thereafter.

Figure 27 to 36 shows the 5th embodiment electric rotating machine 440.Motor 440 comprises rotor 42 and stator 444(Figure 33 and 34), between rotor and stator, carry out relative rotary motion.With reference to Figure 27 and 28, motor 440 has substantial cylindrical housing 452, and this housing is provided with the first cooling agent counterpart 454 and the second cooling agent counterpart 456.As shown in the figure, liquid coolant is received in housing 452 via the first cooling agent counterpart 454, and this first cooling agent counterpart 454 is coolant entrances of motor 440; Liquid coolant is discharged from housing 452 via the second cooling agent counterpart 456, and this second cooling agent counterpart 456 is coolant outlets of motor 440.The same with above-described embodiment, be to be understood that, counterpart 454 and 456 can put upside down aspect its coolant entrance as motor 440 and outlet, result is to put upside down through the direction of the liquid coolant flow of motor, and to coolant flow along liquid coolant relevant also therefore and similarly the putting upside down such as entrance, outlet, inlet port and/or the feature that exits mouth of the flow direction in path of flowing.

Conventionally, the same with above-described embodiment, motor 440 is parts of the closed loop coolant system of well-known type, and this system comprises liquor pump and heat exchanger (not shown).For shown in embodiment, in the time of its installation and operation, provide fluid under pressure cooling agent by cooling agent supply hose (not shown) to entrance counterpart 454 from the source of supply of electric rotating machine 440 outsides, this cooling agent supply hose clamps or is otherwise fixedly connected to electric rotating machine.Outlet counterpart 456 is connected to similarly cooling agent and returns to flexible pipe (not shown), and this cooling agent returns to flexible pipe and transmits the cooling agent of discharging from motor 440, and this cooling agent is cooled subsequently.

Counterpart 454,456 can be formed by steel pipe, and is respectively fixed to front covering 460 and rear covering 458 circular, plane, and this front covering 460 and rear covering 458 form relative front axial end portion and the rear axial end portion of cylindrical housings 452.Covering the 458, the 460th, rigidity, and can be formed by steel plate materials, this steel plate materials has aperture, and the axial medial end of counterpart 456,454 is inserted in described aperture, and is undertaken attached by for example hard pricker.Front covering 460 is also provided with center port, and axle 62 extends through this center port, and this axle 62 can rotate and be rotatably fixed to rotor 42 around central axis 64.Belt wheel 66 housing 452 outer rotatable be fixed to axle 62.In housing 452 inside, axle 62 is supported by fore bearing and rear bearing 68,69, as shown in Figure 33 and 34.

Motor 440 comprises substantial cylindrical chuck 470, this chuck and stator 444 thermal conductive communication, and a part for formation housing 452.Chuck 470 preferably for example, is formed by rigid material (aluminium) casting of high thermal conductivity, but can be also made of iron alternatively, and/or is stamping parts or weldment.Be disposed radially the cylindrical sleeve 472 of tubulose around chuck 470, this sleeve can be formed by for example metal or plasticity flaky material.Chuck 470 has the radially outer heat transfer surface 474 of substantial cylindrical, and tubular sleeve 472 has interactional columniform inner radial receiving surface 476.Between radially outer heat transfer surface 474 and inner radial receiving surface 476, have fluid passage 478, this fluid passage defines the flow path 480 for the liquid coolant through motor 440.In other words, fluid passage 478 is vertically between two relative ends of tubular sleeve 472, and radially in the space between stacked outside and inner surface 474 and 476.At least a portion for the flow path 480 through the liquid coolant of motor 440 is followed fluid passage 478.

Chuck 470 and sleeve 472 can be for example in known manner interference fit or heat be combined together, for example, by cooling jacket 470 and heating muff 472 before assembling, then after they are relative to each other located, allow their temperature equalization.In addition, it will be recognized by those of ordinary skills, do not adopt structure as shown in the figure, the radially outer heat transfer surface 474 of chuck can there is no special feature, and the inner radial receiving surface 476 of sleeve is provided with the feature structure that defines fluid passage.With reference to Figure 33 and 34, seal 498 is arranged between chuck 470 and sleeve 472 at the relative axial end portion place of chuck 470 and sleeve 472.

The radially outer heat transfer surface 474 of the substantial cylindrical of chuck 470 is provided with continuous helical groove 482, this helical groove extends along circumferential around axis 64, in the direction along axis 64, advance vertically with uniform spacing, and define fluid passage 478.As shown in the figure, the cross section of helical groove 482 can be essentially rectangular and its shape be roughly uniform, but also can change along flow path 480, to affect as required coolant flow and/or heat transfer conditions.The part in helical groove 482 outsides of radially outer heat transfer surface 474 contacts with the columniform level and smooth inner radial receiving surface 476 of sleeve 472, and this inner radial receiving surface there is no special feature.Thereby the each several part of fluid passage 478 is radially positioned between the inside receiving surface 476 of sleeve and the bottom of groove 482.

In motor 440, helical groove 482 defines the elementary or Part I of fluid passage 478, and this is elementary or Part I circumferentially extends around axis 64 edges and the while advances in the direction along axis 64.The fluid passage 478 being limited by helical groove 482 around and circumferential extension and axial advancement along axis 64 time be complementary.In other words, in motor 440, depend on the roughly flow path 480 along circumferential extension around axis 64, the flow path 480 that fluid passage 478 limits advances in the direction along central axis 64.

At relative 484,485 places, two ends of helical groove 482, in the position along flow path 480, there is respectively the inlet port 486 of fluid passage 478 and exit mouth 488.Inlet port 486 and exit mouthfuls 488 all the radially inner side of the portion that is tightly connected between chuck 470 and sleeve 472 extend through chuck 470.As mentioned above, according to the direction of the selected coolant flow along the flow path 480 through motor 440, inlet port 486 can be put upside down equally with the appointment of exiting mouth 488.In the alternative unshowned embodiment of motor 440, counterpart 454 and 456 is positioned at two relative ends of helical groove 482, be fixed in the aperture of cylindrical sleeve 472 interior settings, and define respectively fluid passage inlet port 486 and fluid passage and exit mouthfuls 488.In so alternative embodiment, counterpart 454 and 456 radially extends from motor 440, instead of by covering 460 and 458 carrying and extend vertically from covering 460 and 458, as mentioned above and as shown in the figure.

The electric rotating machine of known existing liquid cools comprises the heat transfer surface of substantial cylindrical, and this heat transfer surface has and the similar helical groove of groove 482, and this helical groove defines spiral fluid passageway.According to the groove that defines such spiral fluid passageway, in these existing motors, can there is the region of such heat transfer surface, the cooling behavior occurring in these location is minimum, reason is the remainder with respect to heat transfer surface, these regions are not crossed by fluid passage, therefore do not have convection current cooling.Such region can be the position of local overheating.

In order to tackle this defect of electric rotating machine of existing liquid cools, the fluid passage 478 of motor 440 also comprises a pair of auxiliary coolant grooves 490,491 in heat transfer surface 474.Auxiliary coolant grooves 490,491 defines through the mobile path 480 of liquid coolant of motor 440 and the sub section of fluid passage 478.As shown in the figure, each auxiliary coolant grooves 490,491 has roughly semicircular in shape, and has roughly size uniformly along its length; These features can change as required, to affect along the coolant flow of these features with from the heat transmission of relevant range.The cross sectional dimensions of the secondary fluid channel part being limited by auxiliary coolant grooves 490,491 is significantly less than the primary fluid passage part being limited by helical groove 482.Therefore, liquid coolant is significantly less than the flow of liquid coolant through helical groove 482 through the flow of auxiliary coolant grooves 490,491.

Direction with respect to coolant flow along flow path 480, the auxiliary coolant grooves 490 first running into along between the isolated primary importance 492 of helical groove 482 and the second place 493 extend.In an illustrated embodiment, the first and second positions 492,493 are around circumferentially spaced apart about 360 °, axis 64 edges.Therefore, primary importance 492 and the second place 493 can roughly radially be aimed at around axis 64, as shown in the figure.The also proportional spacing length of spaced apart about helical groove 482 vertically of position 492,493.Primary importance 492 is positioned near the end 484 of helical groove 482, adjacent with fluid passage inlet port 486.The second place 493 is positioned at primary importance 492 inner sides vertically, in the direction along axis 64 away from inlet port 486 and towards exiting mouthfuls 488.Therefore,, near its end 484, helical groove 482 is fluidly connected to the axial inner side part of self via auxiliary coolant grooves 490.Axially the position of the second place 493 of inner side on one point near, at this some place, helical groove 482 complete its in heat transfer surface 474 in the direction of the coolant flow along helical groove 482 circumferentially extending for the first time around central axis 64.Therefore,, at primary importance 492 places, helical groove/fluid passage primary part 482 is fluidly connected to it in of the second place 493 itself via fluid passage sub section 490.

Similarly, the auxiliary coolant grooves 491 running into is for the second time being extended between isolated the 3rd position 494 and the 4th position 495 along helical groove 482.In an illustrated embodiment, the third and fourth position 494,495 is around circumferentially spaced apart about 360 °, axis 64 edges.Therefore, the 3rd position 494 and the 4th position 495 can roughly radially be aimed at around axis 64, as shown in the figure.The also proportional spacing length of spaced apart about helical groove 482 vertically of position 494,495.The 4th position 495 is positioned near the end 485 of helical groove 482, exits mouthfuls 488 adjacent with fluid passage.The 3rd position 494 is positioned at the axial inner side of the 4th position 495, in the direction along axis 64 away from exiting mouthfuls 488 and towards inlet port 486.Therefore,, near its end 485, helical groove 482 is fluidly connected to the axial inner side part of self via auxiliary coolant grooves 491.Axially the position of the 3rd position 494 of inner side on one point near, at this some place, helical groove 482 starts it and in the direction of the coolant flow along helical groove 482, circumferentially extends around the last of central axis 64 in heat transfer surface 474.Therefore,, in the 3rd position 494, helical groove/fluid passage primary part 482 is fluidly connected to it in of 495 places, the 4th position itself via fluid passage sub section 491.

Each auxiliary coolant grooves/fluid passage sub section 490,491 extends between its a pair of position 492,493 or 494,495 separately, and cross the region 496,497 of heat transfer surface 474, the helical groove 482 of large-size does not extend through this region 496,497.If not auxiliary coolant grooves 490,491 is provided, region 496,497 is may not can sufficiently cooled so, and may become less desirable hot spot.Region 496 and 497 is roughly represented by the shadow region of Figure 29-32 and 36.As illustrated best in Figure 36, the shape of two auxiliary coolant grooves 490 and 491 is substantially each other in mirror image, and they may be substantially the same in other side.As shown in the figure, each auxiliary coolant grooves the 490, the 491st, bending, and fully extend in its region 496,497 separately.

With reference to the left side of Figure 36, liquid coolant is received in the inlet port 486 of fluid passage 478 under pressure.Near inlet port 486, the less important part that flow into the liquid coolant in fluid passage 478 is introduced in the auxiliary coolant grooves 490 first running at primary importance 492 places; The major part that flows through the liquid coolant separating of fluid passage 478 continues to advance along helical groove 482.The less important part that is received into the liquid coolant in auxiliary coolant grooves 490 is transmitted in the space between stacked surface 474 and 476 through the region 496 first running into along this auxiliary coolant grooves, and the major part in the liquid coolant flow of separating through helical groove 482 absorbed the heat from region 496 in the mode of convection current before the second place 493 places reconnect, in the downstream of this second place, coolant flow through fluid passage 478 no longer separates, but unified, until run into the 3rd position 494.Be initially at the liquid coolant that primary importance 492 places are received in auxiliary coolant grooves 490 and flow in region 496, and along with the direction of the stream through helical groove 482 roughly contrary direction flow towards the summit 499 being formed by groove 490.Along groove 490, between 499 position, summit 492 and 493.In the time flowing through the cooling agent of groove 490 and arrive its summit 499, coolant flow changes to the roughly direction of coolant flow through helical groove 482 along the roughly direction of groove 490.Then, assemble through the liquid coolant flow of groove 490 and 482 and merge at the second place 493 places.Be noted that at primary importance 492 places, the opening of auxiliary coolant grooves 490 is orientated with respect to helical groove 482, to receive liquid coolant under pressure.At the second place 493 places, the opening of auxiliary coolant grooves 490 is orientated with respect to helical groove 482, to facilitate along the merging of the less important and major part of the liquid coolant flow of flow path 480.

With reference to the right side of Figure 36, liquid coolant is transmitted the helical groove 482 through the second place 493 downstreams under pressure.The less important part of passing the liquid coolant flow of fluid passage 478 is received in the auxiliary coolant grooves 491 running into for the second time at 494 places, the 3rd position; The major part of liquid coolant flow is separately passed the opening of auxiliary coolant grooves 491 at 494 places, the 3rd position, and exits mouth 488 along helical groove 482 towards fluid passage and continue to advance.Exiting near mouthfuls 488, auxiliary coolant grooves 491 is fluidly connected to helical groove 482 at 495 places, the 4th position, in the 4th position, be re-directed to major part through the less important part of the liquid coolant flow of separating of assisting coolant grooves 491.Then, unified liquid coolant leaves from fluid passage 478 via exiting mouth 488.The less important part that is received into the liquid coolant in auxiliary coolant grooves 491 is transmitted in the space between stacked surface 474 and 476 through the region 497 running into for the second time along this auxiliary coolant grooves, and the major part in the liquid coolant flow of separating through helical groove 482 absorbed the heat from region 497 in the mode of convection current before 495 places, the 4th position reconnect, in the downstream of the 4th position, coolant flow through fluid passage 478 no longer separates, but unified.Be initially at the liquid coolant that 494 places, the 3rd position are received in auxiliary coolant grooves 491 and flow in region 497, and along deviating from the direction of the coolant flow through helical groove 482 but roughly the same direction flows towards the summit 499 being formed by groove 491.Along groove 491, between 499 position, summit 494 and 495.In the time that this cooling agent arrives the summit 499 of groove 491, change to through the direction of the coolant flow of groove 491 roughly contrary with the direction of the stream through helical groove 482, and coolant flow at 495 places, the 4th position, exiting mouthfuls 488 near merging.Be noted that at 494 places, the 3rd position, the opening of auxiliary coolant grooves 491 is orientated with respect to helical groove 482, to receive liquid coolant under pressure.At 495 places, the 4th position, the opening of auxiliary coolant grooves 491 is orientated with respect to helical groove 482, to facilitate along the merging of the less important and major part of the liquid coolant flow of flow path 480.

As shown in the figure, the primary part 482 of 480You fluid passage, the mobile path of liquid coolant 478 and sub section 490,491 limit.The first and second positions 492,493 via fluid passage sub section 490 and fluid passage primary part 482 abreast fluid be connected.The third and fourth position 494,495 via fluid passage sub section 491 and fluid passage primary part 482 abreast fluid be connected.Therefore,, in motor 440, flow path 480 is limited by helical groove 482 and auxiliary coolant grooves 490,491.

As Figure 34 illustrates best, the axial medial end of the first cooling agent counterpart 454 is fluidly connected to the port 512 in the axial end portion part of cylindrical chuck 470 in the front portion of motor 440.Liner or seal 513 be the connecting portion between covering 460 and chuck 470 before port 512 sealing.Port 512 is fluidly connected to the inlet port 486 of fluid passage 478.Thereby liquid coolant is introduced in motor 440 by coolant entrance 454 under pressure, and flow to fluid passage 478 by port 512 and inlet port 486.

Conventionally, cylindrical chuck 470 has internal volume and the axial end portion part 500 of sealing at least in part at the rear portion place of motor 440.The axial end portion part 500 of chuck is the chuck internal volume at enclosed rotor 42 and stator 444 places partly.Fluid chamber 502 is limited by the wall 504 of the axial end portion part 500 of chuck, and fluid chamber 502 is fluidly connected to fluid passage 478.The wall 504 of fluid chamber 502 and rear covering 458 define the fluid passage 506 of the general toroidal of extending between the first and second openings 508,510, and define the flow path 480 for the liquid coolant through motor 440.What the first opening 508 of fluid passage 506 was fluidly connected to fluid passage 478 exits mouthfuls 488.The liquid coolant being received in fluid passage 506 is circlewise directed to second opening 510 along flow path 480 through path 506 around central axis 64.The second opening 510 is fluidly connected to the axial medial end of the second cooling agent counterpart 456, and this second cooling agent counterpart 456 is coolant outlets of motor 440.Connecting portion between liner or seal 514 sealed jackets 470 and rear covering 458, to prevent that liquid coolant from leaking from fluid passage 506.Alternatively, the second opening 508 of fluid chamber 502 can be arranged in the cylindrical outer wall of chuck 470, and the second cooling agent counterpart 456 is coupled in this outer wall, instead of is fixed to as mentioned above and as shown in the figure rear covering 458.In addition, alternatively, port 512 can be positioned in the cylindrical outer wall of chuck 470, and wherein the first cooling agent counterpart 454 is coupled in this outer wall, instead of is fixed to as mentioned above and as shown in figure front covering 460.In so alternative unshowned embodiment, coolant entrance and outlet counterpart radially extend from motor 440, instead of are extended vertically by 460,458 carryings of front covering and rear covering and the past covering and rear covering 460,458.

Be provided with the cavity 516 being limited by the wall 504 of the axial end portion part of chuck at the radially inner side of annular fluid chamber 502.Cavity 516 substantially by fluid chamber 502 around, and cavity 516 and chamber 502 are by their separated walls 504 are carried out to heat by conduction connection, very similar with the first embodiment motor 40.For the thermal source 518 of power electronic device module 520 forms is arranged in cavity 516, and be communicated with wall 504 heat by conductions, this power electronic device module 520 can be similar to the power electronic device 120 of motor 40.Axle rear bearing 69 is supported in the bearing mounting portion 522 being limited by the wall 504 of the axial end portion part 500 of chuck, is another thermal source 518 of motor 440.

The heat energy that can transmit by the wall 504 of the axial end portion part of chuck that comes from thermal source 518 is enough delivered to liquid coolant along flow path 480 mode with convection current in fluid passage 506.Therefore, from the heat of stator 444 with from for example power electronic device module 520 of extra heat source 518(or rear bearing 69) heat energy enough be delivered to liquid coolant via the cylindrical wall of chuck 470 and the axial end portion part 500 of chuck in the mode of convection current.

Therefore, from accompanying drawing and above explanation, be appreciated that, flow path 480 for the liquid coolant through motor 440 starts from the first cooling agent counterpart 454 places, advance through fluid passage 478, flow through annular fluid passage 506, and end at the second cooling agent counterpart 456.More specifically, the liquid coolant being received in motor 440 by coolant entrance 454 and port 512 enters fluidic distribution passages 478 via inlet port 486, and near 492 places, position inlet port 486 separately.The major part of stream is separately followed the primary part of fluid passage 478 along helical groove 482, this helical groove 482 extends and advances in the direction along axis 64 along circumferential around axis 64 simultaneously, the less important part of stream is separately followed the sub section of fluid passage 478 along auxiliary coolant grooves 490, this auxiliary coolant grooves 490 is crossed region 496 and along extending between the isolated position 492 and 493 of helical groove 482.Stream separately connects at 493 places, position, and unified coolant flow continues to advance to position 494 along helical groove 482, and at these 494 places, position, coolant flow separates again.The major part of stream is separately followed the primary part of fluid passage 478 along helical groove 482, this helical groove 482 continues extend and advance in the direction along axis 64 along circumferential around axis 64 simultaneously, the less important part of stream is separately followed the sub section of fluid passage 478 along auxiliary coolant grooves 491, this auxiliary coolant grooves 491 is crossed region 497 and along extending between the isolated position 494 and 495 of helical groove 482.Stream separately connects near 495 places, position that exit mouthfuls 488, and unified coolant flow is through the first opening 508 that exits mouth 488 and continue to advance to fluid passage 506.Flow path 480 continues to advance to fluid passage the second opening 510 circlewise around cavity 516, then discharges from motor 440 by coolant outlet 456.With reference to Figure 35 and 36, represent for the flow path 480 use directivity arrows of the liquid coolant through motor 440.

Below list according to a preferred embodiment of the invention:

1. an electric rotating machine for liquid cools, it comprises:

Stator, this stator has central axis;

Rotor, this rotor by stator around, and rotate around central axis with respect to stator;

Chuck, this chuck has internal volume, and stator and rotor are positioned in this internal volume, and chuck is communicated with around stator and with stator heat by conduction, and chuck defines radially outer heat transfer surface with respect to central axis; And

Fluid passage, this fluid passage has inlet port and exits mouth, this fluid passage is at the inlet port of fluid passage and exit between mouth and extend, and cross the heat transfer surface of chuck, this fluid passage defines the flow path for the liquid coolant through motor, this flow path around central axis roughly along circumferentially extending, and at the inlet port of fluid passage with exit between mouth and advance along the direction parallel with central axis;

Wherein, advance along the contrary direction parallel with central axis in the time that it crosses heat transfer surface for the flow path of the liquid coolant through motor.

2. according to the motor described in preferred embodiment 1, it also comprises sleeve, this sleeve defines inner radial cooling agent receiving surface around chuck setting and with respect to central axis, and wherein fluid passage is positioned between the heat transfer surface of chuck and the cooling agent receiving surface of sleeve.

3. according to the motor described in preferred embodiment 1 or 2, wherein flow path roughly circumferentially extends on edge continuously around central axis.

4. according to the motor described in any one in aforementioned preferred embodiments, wherein, with respect to roughly extending independently along circumferential around central axis, the flow path being limited by fluid passage advances along at least one direction parallel with central axis.

5. according to the motor described in preferred embodiment 4, wherein, with respect to roughly extending independently along circumferential around central axis, the flow path being limited by fluid passage advances along the both direction parallel with central axis.

6. according to the motor described in any one in aforementioned preferred embodiments, wherein fluid passage comprises:

The first fluid channel part that multiple general toroidal ground extends, each first fluid channel part has relative end, each first fluid channel part roughly extends along circumferential along each first fluid channel part around central axis between its corresponding relative end, and described multiple first fluid channel parts distribute vertically along central axis; And

Multiple second fluid channel parts, each second fluid channel part fluidly connects the end of a pair of first fluid channel part, and flow path advances in the direction parallel with central axis along each second fluid channel part.

7. according to the motor described in preferred embodiment 6, the wherein each axial adjacent end that fluidly connects a pair of first fluid channel part in multiple second fluid channel parts.

8. according to the motor described in preferred embodiment 6 or 7, wherein flow path advances on the common direction parallel with central axis along each in multiple second fluid channel parts.

9. according to the motor described in any one in preferred embodiment 6 to 8, the end of a pair of first fluid channel part wherein fluidly connecting by second fluid channel part is roughly radially aimed at around central axis.

10. according to the motor described in any one in preferred embodiment 6 to 9, wherein each first fluid channel part extends between its relative entrance end and outlet end, and each second fluid channel part fluidly connects entrance end and the outlet end of a pair of first fluid channel part, thereby described multiple first fluid channel part fluidly connects in the mode of series connection each other via multiple second fluid channel parts.

11. according to the motor described in preferred embodiment 10, and the entrance end of a pair of first fluid channel part wherein fluidly connecting by second fluid channel part and outlet end are adjacent vertically each other.

12. according to the motor described in preferred embodiment 11, the entrance end of wherein said multiple first fluid channel parts and outlet end are roughly radially aimed at around central axis, and are interspersed along the direction parallel with central axis between axially adjacent first fluid channel part.

13. according to the motor described in any one in preferred embodiment 6 to 12, wherein fluid passage comprises the 3rd fluid passage part, the 3rd fluid passage part has relative end and along extending with the direction of central axis almost parallel, the 3rd fluid passage part is positioned between the relative end of each first fluid channel part, and the end of a first fluid channel part in described multiple first fluid channel part is fluidly connected to an end of the 3rd fluid passage part, another end of the 3rd fluid passage part is fluidly connected to the one in mouth that exits of the inlet port of fluid passage and fluid passage.

14. according to the motor described in preferred embodiment 13, and the end of the different first fluid channel part in wherein said multiple first fluid channel parts is fluidly connected to the another one in mouth that exits of the inlet port of fluid passage and fluid passage.

15. according to the motor described in preferred embodiment 13 or 14, the wherein inlet port of fluid passage and exiting mouthful by the multiple interconnective fluid passage part fluid communication with each other by comprising that first fluid channel part, second fluid channel part and the 3rd fluid passage part form, described multiple interconnective fluid passages part is connected to each other in the mode of series connection.

16. according to the motor described in any one in preferred embodiment 6 to 15, wherein fluid passage comprises the 3rd fluid passage part, be connected to the end of a first fluid channel part in described multiple first fluid channel part the 3rd fluid passage segment fluid flow, flow path along the 3rd fluid passage part parallel with central axis and with the direction of the opposite direction along second fluid channel part on advance.

17. according to the motor described in preferred embodiment 16, and wherein flow path advances on the common direction parallel with central axis along all second fluid channel parts.

18. according to the motor described in any one in aforementioned preferred embodiments, and wherein the inlet port of fluid passage and exiting mouthful is all positioned on the equidirectional of central axis with respect to rotor.

The method of 19. 1 kinds of liquid cools electric rotating machines, it comprises the following steps:

Utilize liquid coolant flow to cross the heat transfer surface of the substantial cylindrical arranging around axis along the flow path being limited by fluid passage, this flow path roughly extends along circumferential around axis, and advances along the contrary direction parallel with axis inlet port and the exiting between mouth of fluid passage of fluid passage.

20. according to the method described in preferred embodiment 19, and wherein flow path is roughly independently with respect to flow path along advancing of at least one direction parallel with axis along circumferential extension around axis.

The electric rotating machine of 21. 1 kinds of liquid cools, it comprises:

Stator, this stator has central axis;

The chuck of substantial cylindrical, this chuck has relative axial end portion and internal volume, and stator and rotor are positioned in this internal volume, and chuck is communicated with around stator and with stator heat by conduction, and chuck defines radially outer heat transfer surface with respect to central axis; And

Fluid passage, heat transfer surface is crossed in this fluid passage, this fluid passage defines for the flow path of the liquid coolant through motor and has the first and second fluid passage parts, first fluid channel part extends and advances along the direction parallel with central axis around central axis, first fluid channel part has relative end, this relative end defines respectively the mouth that exits of the inlet port of fluid passage and fluid passage, and fluid passage is at inlet port and exit between mouth and extend;

Wherein the first and second fluid passage parts interconnect in isolated position along first fluid channel part, a position in isolated position is near the inlet port of fluid passage and exit the one in mouth, heat transfer surface comprises the region that first fluid channel part does not cross, this region is between the axial end portion and first fluid channel part of chuck, second fluid channel part extends in this region at itself and interconnective the interconnecting between position of first fluid channel part, thereby this region is crossed by second fluid channel part, and heat energy is enough is delivered to liquid coolant in the mode of convection current from this region along flow path.

22. according to the motor described in preferred embodiment 21, and wherein the direction parallel with central axis spaced apart with exiting opening's edge for fluid passage inlet port.

23. according to the motor described in preferred embodiment 21 or 22, wherein first fluid channel part is around central axis roughly along circumferentially at the inlet port of fluid passage with exit between mouth and extend, and first fluid channel part is complementary around the extension of central axis with the advancing of direction along parallel with central axis.

24. according to the motor described in any one in preferred embodiment 21 to 23, and wherein first fluid channel part is roughly spiral, thereby first fluid channel part roughly extends and advances along the direction parallel with central axis along circumferential around central axis simultaneously.

25. according to the motor described in any one in preferred embodiment 21 to 24, wherein the first and second fluid passage parts define respectively primary and secondary fluid passage part, and fluid passage is suitable for transmitting via primary and secondary fluid passage part respectively along flow path relative major part and the less important part of liquid coolant.

26. according to the motor described in any one in preferred embodiment 21 to 25, wherein fluid passage defines flow path part separately along first fluid channel part isolated interconnecting between position, fluid passage comprises a pair of second fluid channel part, each second fluid channel part is fluidly connected to first fluid channel part along first fluid channel part in the corresponding isolated position that interconnects, first fluid channel part extends between described a pair of second fluid channel part, thereby fluid passage is at the inlet port of fluid passage and exit and between mouth, define the flow path that part separately and indiscrete part are interspersed.

27. according to the motor described in preferred embodiment 26, wherein second fluid channel part crosses the each region in two regions that the first fluid channel part in heat transfer surface do not cross, each region is between the axial end portion and first fluid channel part of chuck, each second fluid channel part extends in its corresponding region at itself and interconnective the interconnecting between position of first fluid channel part, be delivered to liquid coolant in the mode of convection current from two regions along flow path thereby each region is crossed by second fluid channel part and heat energy is enough.

28. according to the motor described in any one in preferred embodiment 21 to 27, and wherein fluid passage is suitable for the part of separating of the liquid coolant flow transmitting along the first and second fluid passage parts along flow path at the inlet port of fluid passage and exits the unified stream that connects into liquid coolant between mouth.

29. according to the motor described in any one in preferred embodiment 21 to 28, the flow path wherein being limited by fluid passage is at the inlet port of fluid passage and exit between mouth by repeatedly separately and reunify, the separate section of flow path extends along each second fluid channel part, this second fluid channel part crosses the region that the first fluid channel part in heat transfer surface does not cross, this region is between the axial end portion and first fluid channel part of chuck, be delivered to liquid coolant in the mode of convection current from multiple regions along the flow path being limited by fluid passage thereby heat energy is enough.

30. according to the motor described in any one in preferred embodiment 21 to 29, and wherein, in the direction parallel with central axis, rotor is arranged on the inlet port of fluid passage and exits between mouth.

31. according to the motor described in any one in preferred embodiment 21 to 30, wherein interconnects position along first fluid channel part isolated spaced apart along the direction parallel with central axis.

32. according to the motor described in preferred embodiment 31, wherein roughly radially aims at respect to central axis along the isolated position that interconnects of first fluid channel part.

33. according to the motor described in any one in preferred embodiment 21 to 32, wherein roughly radially aims at respect to central axis along the isolated position that interconnects of first fluid channel part.

34. according to the motor described in any one in preferred embodiment 21 to 33, wherein interconnects the inlet port of position and fluid passage or exits mouth and roughly radially aim at respect to central axis along isolated of interconnecting in position of first fluid channel part.

35. according to the motor described in any one in preferred embodiment 21 to 34, wherein the first and second fluid passage parts interconnect with acute angle interconnecting position along isolated at least one interconnecting in position of first fluid channel part, thereby the first and second fluid passage parts are interconnecting that position is correspondingly assembled or separately accordingly along flow path.

36. according to the motor described in any one in preferred embodiment 21 to 35, wherein second fluid channel part forms summit, at this summit place, direction with respect to flow path part along first fluid channel part, flow path part changes its roughly direction along the direction of second fluid channel part.

37. according to the motor described in preferred embodiment 36, wherein on summit with near the inlet port of fluid passage or interconnecting between position of exiting mouthful, flow path along the direction of second fluid channel part the first and second isolated interconnecting between position roughly and the opposite direction of flow path along first fluid channel part.

38. according to the motor described in preferred embodiment 37, and wherein roughly contrary flow path direction is around central axis.

39. according to the motor described in any one in preferred embodiment 36 to 38, and wherein summit interconnects between position along roughly location medially of the length of second fluid channel part isolated.

The method of 40. 1 kinds of liquid cools electric rotating machines, it comprises the following steps:

Along around Axis Extension and along with the progressive first fluid channel part in side of axially parallel, at the inlet port of fluid passage with exit between mouth, utilize the liquid coolant flow of following the flow path being limited by fluid passage to cross the heat transfer surface of the substantial cylindrical arranging around axis;

Cross the region of not crossed by first fluid channel part in heat transfer surface along second fluid channel part, this region between the axial end portion and first fluid channel part of heat transfer surface, this second fluid channel part along first fluid channel part near fluid passage inlet port or the position of exiting mouthful and extend in this region along between another position of first fluid channel part; And

Heat is delivered to liquid coolant in the mode of convection current from this region along flow path.

The electric rotating machine of 41. 1 kinds of liquid cools, it comprises:

Coolant entrance and coolant outlet;

Stator, this stator has central axis;

Chuck, this chuck defines the heat transfer surface being communicated with stator heat by conduction, this chuck has relative axial end portion, internal volume and axial end portion part, stator and rotor are positioned in this internal volume, this axial end portion part has wall, and this internal volume is partly sealed by the axial end portion part of chuck;

Fluid passage, chuck heat transfer surface is crossed in this fluid passage between the axial end portion of chuck;

Fluid passage, this fluid passage is limited by the wall of the axial end portion part of chuck, and and fluid passage in fluid communication, between coolant entrance and coolant outlet, define the flow path through the liquid coolant of motor by fluid passage and fluid passage; And

Thermal source, this thermal source is communicated with the wall heat by conduction of the axial end portion part of chuck, thereby can between the wall of the axial end portion part of chuck and liquid coolant, transmit in the mode of convection current along flow path in hot at least a portion of transmitting between thermal source and fluid passage.

42. according to the motor described in preferred embodiment 41, wherein fluid passage has the first opening and the second opening, flow path through the liquid coolant of motor extends the first opening and the second opening, fluid passage and fluid passage via the first opening with one in the second opening and be fluidly connected each other.

43. according to the motor described in preferred embodiment 42, and wherein the another one in the first opening and the second opening is fluidly connected to the one in coolant entrance and coolant outlet.

44. according to the motor described in preferred embodiment 43, wherein the wall of the axial end portion part of chuck defines the port isolated with fluid passage, be connected to this port, and another one in coolant entrance and coolant outlet is fluidly connected to this port fluid channel fluid.

45. according to the motor described in any one in preferred embodiment 42 to 44, and wherein the first opening is positioned at the relative end of fluid passage along flow path with the second opening.

46. according to the motor described in any one in preferred embodiment 42 to 45, wherein flow path between the first opening and the second opening for roughly spiral.

47. according to the motor described in any one in preferred embodiment 42 to 45, and wherein flow path is general toroidal between the first opening and the second opening.

48. according to the motor described in any one in preferred embodiment 41 to 47, and wherein thermal source is positioned to adjacent vertically with the wall of the axial end portion part of chuck with respect to central axis.

49. according to the motor described in any one in preferred embodiment 41 to 48, and wherein thermal source is positioned to radially adjacent with the wall of the axial end portion part of chuck with respect to central axis.

50. according to the motor described in any one in preferred embodiment 41 to 46, and wherein the axial end portion part of chuck is sealed this internal volume completely at an axial end portion place of chuck.

51. according to the motor described in any one in preferred embodiment 41 to 46, and wherein fluid passage and thermal source are not overlapping vertically.

52. according to the motor described in any one in preferred embodiment 41 to 51, and wherein motor comprises power electronic device, and thermal source comprises power electronic device.

53. according to the motor described in preferred embodiment 52, and wherein this motor comprises covering, and this covering is arranged in the axial end portion part of chuck and defines fluid passage, and power electronic device is arranged between the wall of axial end portion part of covering and chuck.

54. according to the motor described in any one in preferred embodiment 41 to 51, and wherein this motor comprises the bearing being supported by the axial end portion part of chuck, and rotor is by bearings in the internal volume of chuck, and thermal source comprises bearing.

55. according to the motor described in any one in preferred embodiment 41 to 54, and wherein thermal source is positioned between rotor and fluid passage vertically.

56. according to the motor described in any one in preferred embodiment 41 to 55, and wherein with respect to central axis, a part for fluid passage is radially extended in the outside of thermal source.

57. according to the motor described in any one in preferred embodiment 41 to 56, and it also comprises separable covering, this covering define fluid passage and wherein this fluid passage be positioned between rotor and covering along the direction parallel with central axis.

58. according to the motor described in preferred embodiment 57, and wherein thermal source is arranged between the wall of axial end portion part of covering and chuck vertically.

59. according to the motor described in any one in preferred embodiment 41 to 57, and wherein thermal source is arranged between the axial end portion part of rotor and chuck vertically.

The method of 60. 1 kinds of liquid cools electric rotating machines, it comprises the following steps:

Transmit liquid coolant along fluid passage and fluid passage, the heat transfer surface of chuck is crossed in this fluid passage, this heat transfer surface is communicated with the stator heat by conduction around rotor, this fluid passage is fluidly connected to fluid passage and is limited by the axial end portion part of chuck in the mode of series connection, this axial end portion part is partly sealed an internal volume, and stator and rotor are positioned in this internal volume; And

The fluid passage extending along the flow path being limited by fluid passage and between the coolant entrance of motor and coolant outlet, heat from stator is delivered to liquid coolant by heat transfer surface in the mode of convection current, and the heat of self-heat power is delivered to liquid coolant in the mode of convection current in the future, and this thermal source is communicated with the wall heat by conduction of the axial end portion part of chuck.

The electric rotating machine of 61. 1 kinds of liquid cools, it comprises:

Coolant entrance and coolant outlet;

Stator, this stator has central axis;

Thermal source, this thermal source is communicated with the wall heat by conduction of the axial end portion part of chuck, and in the imaginary plane vertical with central axis roughly by fluid passage around, thereby can between the wall of the axial end portion part of chuck and liquid coolant, transmit in the mode of convection current along flow path in hot at least a portion of transmitting between thermal source and fluid passage.

62. according to the motor described in preferred embodiment 41 or 61, wherein fluid passage has the first opening and the second opening, flow path extends between the first opening and the second opening, fluid passage and fluid passage via the first opening with one in the second opening and be fluidly connected each other.

63. according to the motor described in preferred embodiment 42 or 62, and wherein the another one in the first opening and the second opening is fluidly connected to the one in coolant entrance and coolant outlet.

64. according to the motor described in preferred embodiment 43 or 63, wherein the wall of the axial end portion part of chuck defines the port isolated with fluid passage, be connected to this port, and another one in coolant entrance and coolant outlet is fluidly connected to this port fluid channel fluid.

65. according to the motor described in any one in preferred embodiment 42 to 44 or 62 to 64, and wherein the first opening is positioned at the relative end of fluid passage along flow path with the second opening.

66. according to the motor described in any one in preferred embodiment 42 to 45 or 62 to 65, and wherein flow path is generally'S '-shaped between the first opening and the second opening.

67. according to the motor described in any one in preferred embodiment 42 to 45 or 62 to 65, and wherein flow path is general toroidal between the first opening and the second opening.

68. according to the motor described in preferred embodiment 47 or 67, and wherein the flow path of general toroidal is roughly around thermal source.

69. according to the motor described in preferred embodiment 61, and wherein this motor comprises the first and second thermals source, and the flow path of generally'S '-shaped in described imaginary plane roughly around each thermal source in the first and second thermals source.

70. according to the motor described in preferred embodiment 69, and wherein said a pair of thermal source is separated by fluid passage.

71. according to the motor described in preferred embodiment 69, and wherein at least one in the first and second thermals source comprises power electronic device.

72. according to the motor described in preferred embodiment 52 or 71, and it also comprises covering, and this covering is attached to removedly the axial end portion part of chuck and defines fluid passage, and wherein power electronic device is installed to this removable covering.

73. according to the motor described in any one in preferred embodiment 41 to 45 or 61 to 71, it also comprises covering, this covering is attached to removedly the axial end portion part of chuck and defines fluid passage, and wherein thermal source comprises the power electronic device that is installed to this removable covering.

74. according to the motor described in preferred embodiment 61, and wherein thermal source comprises power electronic device, and the axial end portion of chuck defines cavity, and this cavity holds power electronic device and is communicated with fluid passage heat by conduction.

75. according to the motor described in preferred embodiment 74, it also comprises a pair of thermal source, each thermal source comprises power electronic device, and wherein the axial end portion of chuck defines a pair of cavity that is communicated with and is separated by this fluid passage with fluid passage heat by conduction, described a pair of thermal source is arranged in described a pair of cavity, each cavity in described imaginary plane roughly by fluid passage around.

76. according to the motor described in preferred embodiment 74 or 75, wherein the wall of the axial end portion part of chuck defines cavity, and fluid passage is roughly around this cavity, thereby the heat energy that can be delivered to fluid passage from power electronic device by the wall of the axial end portion part of chuck is enough delivered to liquid coolant along the flow path being limited by fluid passage in the mode of convection current.

77. according to the motor described in any one in preferred embodiment 74 to 76, and wherein fluid passage is general toroidal, and roughly extends along circumferential around central axis and cavity.

78. according to the motor described in any one in preferred embodiment 41 to 45 or 61 to 71, and it also comprises covering, and this covering defines fluid passage, fluid passage in the direction along central axis between rotor and covering.

79. according to the motor described in preferred embodiment 78, and wherein cavity is limited by the wall of the axial end portion part of chuck and holds thermal source, and this thermal source in the direction along central axis between rotor and covering.

The method of 80. 1 kinds of liquid cools electric rotating machines, it comprises the following steps:

Transmit liquid coolant along fluid passage and fluid passage, the heat transfer surface of chuck is crossed in this fluid passage, this heat transfer surface be communicated with around the stator heat by conduction of rotor around central axis, this fluid passage is fluidly connected to fluid passage and is limited by the axial end portion part of chuck in the mode of series connection, this axial end portion part is partly sealed an internal volume, and stator and rotor are positioned in this internal volume; And

Along in the imaginary plane substantially vertical with central axis roughly around flow path thermal source and that extend between the coolant entrance of motor and coolant outlet, heat from stator is delivered to liquid coolant by heat transfer surface in the mode of convection current, and the heat of self-heat power is delivered to liquid coolant in the mode of convection current in the future, and this thermal source is communicated with the wall heat by conduction of the axial end portion part of chuck.

Although disclose hereinbefore exemplary embodiment, the present invention is not limited to the disclosed embodiments.On the contrary, the present invention is intended to contain any modification pattern, purposes or the adaptive version that adopt General Principle of the present invention.In addition, the present invention be intended to contain outside the present invention but under the present invention known in restriction field and that drop on claims or be used to have the deviation pattern in practical framework.

Claims

1. the electric rotating machine of a liquid cools (40,140,240,340), it comprises:

Stator (44), this stator has central axis (64);

Rotor (42), this rotor by stator (44) around, and rotate around central axis (64) with respect to stator (44);

Chuck (70,170,270), this chuck has internal volume, stator (44) and rotor (42) are positioned in this internal volume, chuck (70,170,270) is communicated with around stator (44) and with stator heat by conduction, and chuck (70,170,270) defines radially outer heat transfer surface (74) with respect to central axis (64); And

Fluid passage (78), this fluid passage has inlet port (86) and exits mouthful (88), this fluid passage (78) is at the inlet port (86) of fluid passage and exit between mouthful (88) and extend, and cross the heat transfer surface (74) of chuck, this fluid passage (78) defines for passing motor (40, 140, 240, 340) flow path (80 of liquid coolant, 180, 280), this flow path roughly extends along circumferential around central axis (64), and at the inlet port (86) of fluid passage with exit between mouthful (88) and advance along the direction parallel with central axis (64),

Wherein advance along the contrary direction parallel with central axis (64) in the time that it crosses heat transfer surface (74) for the flow path (80,180,280) of the liquid coolant through motor (40,140,240,340).

2. motor according to claim 1 (40,140,240,340), it also comprises sleeve (72), this sleeve arranges and defines inner radial cooling agent receiving surface (76) with respect to central axis (64) around chuck (70,170,270), and wherein fluid passage (78) are positioned between the heat transfer surface (74) of chuck and the receiving surface (76) of sleeve.

3. motor according to claim 1 and 2 (40,140,240,340), wherein flow path (80,180,280) roughly circumferentially extends on edge continuously around central axis (64).

4. according to motor in any one of the preceding claims wherein (40,140,240,340), wherein, with respect to roughly extending independently along circumferential around central axis (64), the flow path (80,180,280) being limited by fluid passage (78) advances along at least one direction parallel with central axis (64).

5. motor according to claim 4 (40,140,240,340), wherein, with respect to roughly extending independently along circumferential around central axis (64), the flow path (80,180,280) being limited by fluid passage (78) advances along the both direction parallel with central axis (64).

6. according to motor in any one of the preceding claims wherein (40,140,240,340), wherein fluid passage (78) comprising:

The first fluid channel part (90) that multiple general toroidal ground extends, each first fluid channel part has relative end (94), each first fluid channel part (90) roughly extends along circumferential along each first fluid channel part (90) around central axis (64) between its corresponding relative end (94), and described multiple first fluid channel parts (90) distribute vertically along central axis (64); And

Multiple second fluid channel parts (92), each second fluid channel part fluidly connects the end (94) of a pair of first fluid channel part (90), and flow path (80,180,280) advances in the direction parallel with central axis (64) along each second fluid channel part (92).

7. motor according to claim 6 (40,140,240,340), the wherein each axial adjacent end (94) that fluidly connects a pair of first fluid channel part (90) in multiple second fluid channel parts (92).

8. according to the motor described in claim 6 or 7 (40,140,240,340), wherein flow path (80,180,280) advances on the common direction parallel with central axis (64) along each in multiple second fluid channel parts (92).

9. according to the motor described in any one in claim 6 to 8 (40,140,240,340), the end (94) of a pair of first fluid channel part (90) wherein fluidly connecting by second fluid channel part (92) is roughly radially aimed at around central axis (64).

10. according to the motor described in any one in claim 6 to 9 (40,140,240,340), wherein each first fluid channel part (90) extends between its relative entrance end and outlet end (94), and each second fluid channel part (92) fluidly connects entrance end and the outlet end (94) of a pair of first fluid channel part (90), thereby described multiple first fluid channel parts (90) fluidly connect in the mode of connecting each other via multiple second fluid channel parts (92).

11. motors according to claim 10 (40,140,240,340), entrance end and the outlet end (94) of a pair of first fluid channel part (90) wherein fluidly connecting by second fluid channel part (92) are adjacent vertically each other.

12. motors according to claim 11 (40,140,240,340), the entrance end of wherein said multiple first fluid channel parts (90) and outlet end (94) are roughly radially aimed at around central axis (64), and are interspersed along the direction parallel with central axis (64) between axially adjacent first fluid channel part (90).

13. according to the motor (40 described in any one in claim 6 to 12, 140, 240, 340), wherein fluid passage (78) comprise the 3rd fluid passage part (96), the 3rd fluid passage part has relative end and along extending with the direction of central axis (64) almost parallel, the 3rd fluid passage part (96) is positioned between the relative end (94) of each first fluid channel part (90), and the end (94) of a first fluid channel part in described multiple first fluid channel parts (90) is fluidly connected to an end of the 3rd fluid passage part (96), another end of the 3rd fluid passage part (96) is fluidly connected to the one in mouthful (88) that exits of the inlet port (86) of fluid passage and fluid passage.

14. motors according to claim 13 (40,140,240,340), the end (94) of the different first fluid channel part in wherein said multiple first fluid channel parts (90) is fluidly connected to the another one in mouthful (88) that exits of the inlet port (86) of fluid passage and fluid passage.

15. according to the motor described in claim 13 or 14 (40,140,240,340), the wherein inlet port of fluid passage (86) and exit mouthful (88) by the multiple interconnective fluid passage part fluid communication with each other being made up of first fluid channel part, second fluid channel part and the 3rd fluid passage part (90,92,96), described multiple interconnective fluid passages parts (90,92,96) are connected to each other in the mode of connecting.

16. according to the motor described in any one in claim 6 to 15 (40,140,240,340), wherein fluid passage (78) comprise the 3rd fluid passage part (96), be connected to the end (94) of a first fluid channel part in described multiple first fluid channel parts (90) the 3rd fluid passage segment fluid flow, flow path (80,180,280) along the 3rd fluid passage part (96) parallel with central axis (64) and with the direction of the opposite direction along second fluid channel part (92) on advance.

17. motors according to claim 16 (40,140,240,340), wherein flow path (80,180,280) advances on the common direction parallel with central axis (64) along all second fluid channel parts (92).

18. according to motor in any one of the preceding claims wherein (40,140,240,340), wherein the inlet port of fluid passage (86) and exit mouthful (88) and be all positioned on the equidirectional of central axis (64) with respect to rotor (42).

The method of 19. 1 kinds of liquid cools electric rotating machines (40,140,240,340), it comprises the following steps:

Utilize liquid coolant flow to cross the heat transfer surface (74) of the substantial cylindrical arranging around axis (64) along the flow path being limited by fluid passage (78) (80,180,280), this flow path (80,180,280) roughly extends along circumferential around axis (64), and advances along the contrary direction parallel with axis (64) inlet port (86) and the exiting between mouthful (88) of fluid passage of fluid passage.

20. methods according to claim 19, wherein flow path (80,180,280) is roughly independently with respect to flow path (80,180,280) along advancing of at least one direction parallel with axis (64) along circumferential extension around axis (64).