This application claims submit on February 27th, 2012, sequence number is No.61/603, the preference of the U.S. Provisional Patent Application of 907, the full content of described application is incorporated to herein by reference.
Embodiment
On the whole with reference to institute's drawings attached, present disclosure and teaching described herein provide a kind of modular motor driven pump and controller system, be called electrical motor driven oil pump assembly 10 hereinafter, for such as with vehicle motor or power train---such as speed changer---during the automobile combined is applied.Electrical motor driven oil pump assembly 10 provides lubrication in a variety of systems, cooling and pressure.The primary component of this electrical motor driven oil pump assembly 10 system is: pump 20, and this pump 20 can be (such as, fixed displacement pump or the variable delivery pump) of any known or suitable type; Motor 30, specifically brushless direct-current (DC) type motor; And motor controller 40, such as power converter and suitable electrical cnnector, this suitable electrical cnnector is used for electrical motor driven oil pump 10 to be attached to current source (equipment of such as battery or similar type).In addition, electrical motor driven oil pump assembly 10 can also comprise known and/or suitable diagnosis and sensor signal (not shown).Electrical motor driven oil pump assembly 10 is configured to make due to the system restriction of packaging and so on whole assembly can be included in the body 60 of single sealing (integrated) by all integrated (that is, pump 20, motor 30, controller 40 and electric coupler).But, in the application, due to the infield of this system directly on transmission device or engine body (not shown) and position and even sometimes in the location of transmission device body interior, under this system can be exposed to high ambient temperature.In such applications, under electrical motor driven oil pump assembly 10 is exposed to the environment of the potential very severe comprising high ambient temperature usually.The parts the most responsive to high ambient temperature are motor controllers 40, and this motor controller 40 has the effect of the maximum allowable operating temperature (M.A.O.T.) of restriction electrical motor driven oil pump assembly 10.At present, the maximum allowable operating temperature (M.A.O.T.) for motor controller subassembly is generally following situation: be 175 degrees Celsius for FET node, is 150 degrees Celsius, and is 135 degrees Celsius for capacitor for motor control unit MCU.
In order to ensure in most high ambient temperature operation (Ta=138 degree Celsius) period, be no more than the temperature limit of record, the oily stream of oil pump 20 carrys out cooling controller 40.Mainly, advantage according to the electrical motor driven oil pump assembly 10 of present disclosure is, electrical motor driven oil pump assembly 10 can operate under relatively high ambient temperature conditions, and electrical motor driven oil pump assembly 10 provides the possibility by using the electronic unit compared with known system with lower temperature level to reduce costs simultaneously.As clearly shown in Figure 5, according to one group of exemplary operational condition (that is, ambient air is at 138 degrees Celsius), the oil flowing through pump 20 remains on 125 degrees Celsius in the temperature in ingress and outlet port, and this temperature is lower than the temperature limit of record.Similarly, oil is with 4.5 Liter Per Minutes (Liter Per Minute) flowing in figure 6, and controller 40 is positioned in the first portion of the inlet/outlet shell 44 connected with oil pump assembly 20.The first portion of inlet/outlet shell 44 comprises the first cavity 42, this first cavity 42 for receiving controller 40 and this first cavity 42 has lid 46 in this first cavity 42, this lid 46 be fixed to inlet/outlet shell for by controller 40 and seal parts thereof in the first cavity.The material of inlet/outlet shell 44 preferably selects to have relatively high thermal conductivity, as metal or other known or suitable materials of aluminum or aluminum alloy and so on.The first cavity 42 in inlet/outlet shell 44 at least comprises and extends to pump 20 from the first cavity 42 and lead to the first passage 45 of stator of Brushless DC motor 30.As shown in clear in the mode of execution of Fig. 4, busbar can be included in motor sub-assembly 30, busbar is attached to stator and comprises extension part, and this extension part is used for through the sealing channel extending through pump 20 and enters in the passage of inlet/outlet shell to connect with the controller 40 in the passage of inlet/outlet shell and to be electrically connected.
Cross section as shown in Figure 3, controller 40 is arranged in the first cavity to be reasonably closely positioned to be adjacent at the inlet channel of inlet/outlet shell 44 and outlet passage, makes to have efficient heat trnasfer between controller 40 and the fluid flowing through controller 40.When oil flows into assembly 10, oil will have the temperature relatively lower than the heat produced by motor 30, and pump 20 will be flowed through, by motor 30, then motor 30 is passed back through, and discharge from inlet/outlet shell 44, at inlet/outlet shell 44 place, oil will have hydraulic pressure and and flow to vehicle component, such as speed changer or motor and alternatively heat exchanger, at heat exchanger place, oil is cooled by using any known or suitable system and is then back to assembly 10.In the embodiment as shown, motor 30 can be completely sealed, and the fluid flowing through motor is completely sealed, thus fluid can not and can not contact with any one in the electric component of the electric component of motor 30 or controller 40.For the fluid that can cause electric component short circuit for---such as water---, this complete hermetic assembly 10 is very meaningful and important.Alternatively, for can not causing the fluid of electric component short circuit, motor 30 and controller 40 can partly be sealed or do not sealed, and make fluid be allowed to contact with electric component, and then increase the heat trnasfer left from electric parts.
In Fig. 8 to alternate embodiments illustrated in fig. 14, pump 120 is depicted as the controller 140 having and be positioned at surface, pump 20 side.Especially, can use combine this neoteric teaching and disclosure, the dissimilar pump of the external rotor vane pump in such as Fig. 9 and Figure 10 and the cross vanes pump in Figure 11 to Figure 15 and so on.Should be understood that according to present disclosure, can this neoteric teaching and disclosure are attached in such motors designs: this motors designs provides multiple performance requirement and comprises the specification of inner and outer rotors and the application had between at least 12 volts and 300 volts.And, such controller can be designed: described controller is for providing the multiple design requirement of the application and so on as FOC and Block, 12V and 300V, and comprise various control strategy (that is, based on motor speed, moment of torsion and electric current and the control strategy based on pumping pressure).Therefore, it is to be further understood that the assembly 10 in present disclosure provides the various communications protocol that can be utilized, include but not limited to PWM, K line, LINE, CAN or other any known or suitable agreements.Therefore, can provide a kind of assembly 10, this assembly 10 is for significant multiple design specification and select to be optimize.
Especially, can be expected that, so novel motors designs is provided: this novel motors designs is for improving the performance of integral electric motor driving pump according to the assembly 10 of present disclosure, improve efficiency and the reliability of assembly 10 simultaneously, reduce the cost of the parts of controller 40 thus the holistic cost of minimizing assembly 10 simultaneously.
Now with particular reference to the cross vanes pump illustrated in Figure 13 to 16 of oil pump 200.Pump 200 comprises top board, motor and pump external rotor and pump internal rotor, shown in as clear in Figure 15 and 16.Especially, should be understood that, pump external rotor and pump internal rotor all rotate relative to stationary bushing.Further note that, pump 200 comprises the first blade, the second blade and Three-blade (being blade 1, blade 2 and blade 3 respectively).Similar to said modules 10, pump 200 comprises and is attached to substrate and the controller (or PCB (printed circuit board (PCB))) being positioned at the below of top board (or lid), as shown in clear at Figure 13 and 14.Controller (PCB) is installed in the back of substrate, and therefore the heat of controller can be dissipated by the fluid flowing to outlet from entrance.
The inner member of electrical motor driven oil pump 200 totally comprises motor rotor, pump external rotor, blade 1, blade 2, blade 3, pump internal rotor and lining, and all inner members are linked together all as shown in figure.Entrance and exit to be positioned on substrate and to be attached to pump 200 and flows through for making fluid the pump adopting as directed cross blade design.
Pump external rotor is preferably pressed in motor rotor.The endoporus that pump external rotor is included in pump external rotor is in the semicircle of primary importance or sector part for the first end receiving blade 1.Blade 1 extends from the sector part the endoporus of pump external rotor, and extends past the first slit being positioned to run transverse through pump internal rotor.In the second slit that blade 2 and blade 3 are installed in pump internal rotor and the 3rd slit, and each in blade 2 and blade 3 is guided by the profile of the hole of pump external rotor or the inner circumference of passage.The profile of the hole of pump external rotor or the inner circumference of passage is configured as to be affected the operation of blade 1, blade 2 and blade 3 thus performs in the mode meeting required design requirement during the rotor of pump 200 rotates.When motor 200 works, motor rotor and pump external rotor rotate along the clockwise direction shown in Figure 15, and by drive vane 1 and pump internal rotor, then by drive vane 2 and blade 3, but, these three blades only can swing back and forth and make fluid motion through pump 200 in some angular range relevant to pump rotor, thus result in oil flow to outlet from entrance by pump.
According to present disclosure, the configuration of pump 200 is selected as making pump external rotor be driving component, and internal rotor is driven by the blade 1 be connected with pump external rotor.Such pump method for driving and configuration are unique, therefore the profile of the hole of pump external rotor or the inner circumference of passage is the curve selected in advance, make when pump external rotor rotates, three blades 1,2 just only swing back and forth with 3 in some angular range relevant to pump rotor.
The pump 200 of present disclosure benefits especially from current design, because this electrical motor driven oil pump 200 can work under high ambient temperature condition, there is provided following possibility: by using the electronic unit of low temperature level significantly to reduce costs in controller (PCB), and decrease the quantity of the mechanical part forming pump 200 thus reduce costs further compared with common blade pump simultaneously.
Any numerical value in the text or cited by accompanying drawing is all used to comprise with all numerical value that a unit value increases from lower limit to CLV ceiling limit value, as long as there is the difference of at least two unit values between any lower limit and any CLV ceiling limit value.Exemplarily, if the article pointed out, the value of number of components or method variable---such as temperature, pressure, time etc.---is such as from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, this is intended to show that the numerical value such as such as 15 to 85,22 to 68,43 to 51,30 to 32 are explicitly recited in this specification.For the numerical value being less than 1, a unit can according to circumstances be thought of as 0.0001,0.001,0.01 or 0.1.These are only the examples of special instruction, and all possible combinations of values between cited minimum and peak can be considered to state clearly in this application in a similar fashion.If observe, the teaching being expressed as the amount of " parts by weight " in the text is also considered according to weight percentage to represent identical scope.Therefore, in the embodiment of invention about the teaching that also may be thought of as the scope of the identical amount " x " enumerated of the mixed with polymers component of generation of statement of the scope of the parts by weight " x " of the mixed with polymers component generated.
Except as otherwise noted, all scopes comprise all numerical value between end points and end points.The use of " approximately " or " being similar to " relevant to scope is applicable to two end values of this scope.Therefore, " about 20 to 30 " are intended to contain " about 20 to about 30 ", comprise the end points of at least specifying.
For all objects, the disclosure of all articles and reference that comprise patent application and publication is incorporated into herein by reference.Term for describing combination " consists essentially of " other such elements of essence and the novel features that should comprise pointed element, composition, component or step and not affect in fact this combination, composition, component or step.Term in the text for describing the combination of element, composition, component or step " comprises " or the use of " comprising " also contemplates the mode of execution substantially comprising element, composition, component or step.Herein by use term " can ", be intended that " can " any described attribute that is included is selectable.
Multiple element, composition, component or step can be provided by single integrated component, composition, component or step.Alternatively, single integrated component, composition, component or step can be divided into independent multiple elements, composition, component or step.The disclosure of " one " or " one " of descriptive element, composition, component or step not intended to be gets rid of extra element, composition, component or step in advance.
Should be understood that, description is above intended to be illustrative and not restrictive.To those skilled in the art when reading describes above, the many embodiments except provided example and many application are all apparent.Therefore, scope of the present invention should not be determined with reference to above description, and should determine together with being equal to the four corner that these claims enjoy with reference to appended claim.For all objects, the disclosure of all articles and reference that comprise patent application and publication is incorporated into herein by reference.Omission in the claims of the theme of any aspect disclosed is not in this article denying this theme, should not be regarded as this inventor yet and not consider this part theming as disclosed subject matter.
Claims (amendment according to treaty the 19th article)
1., for an electrical motor driven pump assembly for hydraulic pressure fluid supply, described assembly comprises:
There is the electric motor of housing;
Pump, described pump has pump casing, and described pump casing has first end and the second end, and wherein, described motor casing is attached to the described first end of described pump casing, and described pump comprises the pump fluid passage being connected to described motor and is sent to described motor for by described fluid;
Controller housing, described controller housing has the first end of the described the second end being attached to described pump casing;
Described controller housing comprises the inlet channel for receiving described fluid and the outlet passage for transmitting described fluid, described inlet channel is connected to described pump fluid passage for described fluid being sent to described pump and making fluid by described motor, thus flow back into described pump at described fluid and before described assembly outflow, heat be sent to described fluid from described motor by the described outlet passage of described controller housing, wherein, the first portion of described controller housing locates adjacent to described inlet channel and described outlet passage to provide the heat trnasfer between described fluid and described first portion, and
Controller, described controller be arranged in described controller housing described first portion and be electrically connected to described motor with by power supply to described motor, thus control the output from described pump of the speed of described pump and fluid, wherein, the heat produced by described controller is passed to the fluid flowing through described inlet channel and described outlet passage.
2. assembly according to claim 1, wherein, described controller housing comprises the cavity being arranged in described first portion, wherein, described controller is arranged in described cavity, and wherein, described controller housing comprises first passage for the lead-in wire receiving extremely described controller and described motor to be coupled.
3. assembly according to claim 2, wherein, described pump is sealed in case fluid contacts with described controller with described motor.
4. assembly according to claim 2, wherein, described pump and described motor are not sealed, and the fluid flowing through described pump can be contacted with described controller with the heat trnasfer provided while do not cause electrical short in described controller or described motor from described controller to described fluid.
5. assembly according to claim 1, wherein, described inlet channel and described outlet passage extend along the direction of the axis being substantially perpendicular to described assembly.
6. assembly according to claim 5, wherein, described controller is aimed at a certain angle relative to the described axis of described assembly.
7. assembly according to claim 1, wherein, described controller housing is made up of aluminium, and described controller comprise at least one mos field effect transistor for supply cause the conduction power in magnetic field thus control and drive described electric motor.
8., for hydraulic pressure being supplied to a pump assembly for fluid, described pump assembly comprises:
Controller housing;
Motor case, described motor case is attached to described controller housing;
Motor ring;
Pump external rotor, described pump external rotor is attached to described motor ring and has the shaping inner circumference comprising shaping anchoring section;
Pump internal rotor, described pump internal rotor has multiple arcuately isolated slit;
First blade, described first blade has the first end of the described shaping anchoring section being arranged in described pump external rotor, and described first blade extends through the first pair of slit being arranged in described pump internal rotor; And
Second blade and Three-blade, described second blade and described Three-blade extend through the second pair of slit and the 3rd pair of slit that are arranged in described pump internal rotor;
Wherein, the end of described first blade, the end of the second blade and three-vaned end are subject to the guiding of the profile of the inner circumference of the described passage of described pump external rotor, and can swing back and forth along the angle limited by described pump rotor.
9. pump assembly according to claim 8, wherein, described pump external rotor is driving component, and described pump internal rotor is driven by described first blade be connected with described pump external rotor.
10. pump assembly according to claim 8, wherein, the described profile of the described inner circumference of the described passage of described pump external rotor is the curve selected in advance, and the rotation of described pump external rotor makes described first blade, described second blade and described Three-blade move into swings back and forth.
11. pump assemblies according to claim 8, wherein, described controller, adjacent to described motor ring, described pump external rotor, described pump internal rotor and described first blade, described second blade and described Three-blade location, makes the fluid flowing through described pump receive the heat coming from described controller.
12. assemblies according to claim 1, wherein, described electric motor comprises stator and is attached to the busbar of described stator;
Described controller housing comprises the cavity being arranged in described first portion and the first passage extending to described pump from described first cavity, and described controller is arranged in described cavity;
Described pump comprises the sealing channel extending to described electric motor from the described first passage of described controller housing;
Further, the described busbar of described electric motor comprises extension part, and described extension part passes the described sealing channel of described pump and enters in the described first passage of described controller housing, and described busbar is attached to described controller.
13. assemblies according to claim 1, wherein, described pump also comprises protuberance and cross vanes, and described cross vanes to be received in described protuberance and to extend in described protuberance outside; And described electric motor comprises around the motor rotor of described cross vanes and the stator around described motor rotor.
14. assemblies according to claim 1, wherein, described pump also comprises:
Stationary bushing;
Pump internal rotor, described pump internal rotor is around described stationary bushing and rotate relative to described stationary bushing;
Pump external rotor, described pump external rotor is around described pump internal rotor and rotate relative to described stationary bushing; And
Multiple blade, described multiple blade is spaced apart from each other and extends through described pump internal rotor from described stationary bushing and extend to described pump external rotor.
15. assemblies according to claim 14, wherein, described electric motor comprises motor rotor, and described pump external rotor is pressed in described motor rotor;
Described pump external rotor has the endoporus of the end receiving blade described in each;
Described pump internal rotor comprises slit, extends through described slit to allow described blade;
Wherein, described motor rotor rotates along identical direction with described pump external rotor, drive the first blade in described pump internal rotor and described blade, with the second blade in blade described in rear driving and the Three-blade in described blade, described blade swings back and forth in the mode that the curve about the described endoporus presenting described pump external rotor is angled.
16. assemblies according to claim 1, wherein, described electric motor comprises the motor fluid passage for transmitting described fluid, and described pump fluid passage is connected to described motor fluid passage is sent to described motor for by described fluid.