CN109113951A

CN109113951A - Electric oil pump assembly, steering system and lubricating system

Info

Publication number: CN109113951A
Application number: CN201710495877.6A
Authority: CN
Inventors: 杨胜麟; 刘彦
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2017-06-26
Filing date: 2017-06-26
Publication date: 2019-01-01
Anticipated expiration: 2037-06-26
Also published as: CN109113951B

Abstract

The invention discloses a kind of electric oil pump assembly, steering system and lubricating systems, electric oil pump assembly has total oil inlet and total oil outlet, and includes: electric machine assembly, and the end of electric machine assembly has oil pump chamber, the cabin of electric machine assembly and oil pump chamber separate, and oil pump chamber is connected to total oil outlet；Oil pump component, oil pump component are located at that oil pump is intracavitary, and connect with the motor shaft power coupling of electric machine assembly, and the inlet port of oil pump component is connected to total oil inlet, and oil discharge outlet is connected to oil pump chamber；Buckle, snap connection between oil pump component and electric machine assembly, and with a clearance fit in oil pump component and electric machine assembly so that oil pump component floating support is in the end of electric machine assembly.Electric oil pump assembly of the invention, the pump oil of oil pump component not will receive the interference of the flowing of the oil liquid in electric machine assembly, the work efficiency of oil pump component is high, and electric oil pump assembly has the characteristic of adaptive centering, can reduce the machining accuracy and assembly precision demand of electric oil pump assembly.

Description

Electric oil pump assembly, steering system and lubricating system

Technical field

The invention belongs to technical field of vehicle manufacture, in particular to a kind of electric oil pump assembly, have the electronic oil The steering system of pump assembly and lubricating system with the electric oil pump assembly.

Background technique

Electric oil pump is widely used in the steering system and lubricating system of vehicle, in the related technology, the oil of electric oil pump It is split type for pumping with motor, and connection relationship is only the power coupling connection of oil pump shaft and motor shaft, so that electric oil pump Volume is larger, and the installation space of occupancy is big.In addition, the operating noise of motor and the operating noise of oil pump are larger, the relevant technologies In carry out insulating noise often through various damping elements are arranged, the construction of damping element is complicated, occupy biggish installation space, and High production cost, assembly technology is complicated, and there are rooms for improvement.

Summary of the invention

The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of electricity Dynamic oil pump assy, the electric oil pump assembly work efficiency is high, and machining accuracy and assembly precision demand are low.

Electric oil pump assembly according to an embodiment of the present invention, the electric oil pump assembly have total oil inlet and total fuel-displaced Mouthful, and include: electric machine assembly, the end of the electric machine assembly has oil pump chamber, the cabin of the electric machine assembly and the oil pump Chamber partition, the oil pump chamber are connected to total oil outlet；Oil pump component, it is intracavitary that the oil pump component is located at the oil pump, and It is connect with the motor shaft power coupling of the electric machine assembly, the inlet port of the oil pump component is connected to total oil inlet, row Hydraulic fluid port is connected to the oil pump chamber；Buckle, it is described to snap connection between the oil pump component and the electric machine assembly, and with institute A clearance fit in oil pump component and the electric machine assembly is stated, so that the oil pump component floating support is in the motor group The end of part.

Electric oil pump assembly according to an embodiment of the present invention, oil pump component is pre-installed by setting buckle, and setting is opposite Independent oil pump chamber, the pump oil of oil pump component not will receive the interference of the flowing of the oil liquid in electric machine assembly, can reduce oil pump group The operating friction power of part promotes the work efficiency of oil pump component, reduces the output pulse of oil pump component, promotes electric oil pump assembly Heat dissipation performance and job stability, and integrated level is high, and lightweight is horizontal high, and electric oil pump assembly has adaptive centering Characteristic can reduce the machining accuracy and assembly precision demand of electric oil pump assembly.

Electric oil pump assembly according to an embodiment of the invention, the oil pump component floating support is in the electric machine assembly Drive end bearing bracket on, one end of the buckle is fixedly connected with the drive end bearing bracket, and the other end is equipped with front cover with the oil pump component The grab that board connects, and the grab in the axial direction limits the front shroud.

For the oil pump component floating support on the drive end bearing bracket of the electric machine assembly, the front shroud is equipped with clamping groove, The buckle through the clamping groove and with the clamping groove clearance fit, the end face towards the drive end bearing bracket of the grab with The front shroud clearance fit.

On the drive end bearing bracket of the electric machine assembly, the edge of the front shroud has along diameter the oil pump component floating support To the lug outwardly protruded, the clamping groove is located on the lug, the end face towards the drive end bearing bracket of the grab and institute The surface away from the drive end bearing bracket for stating lug is oppositely arranged.

For the oil pump component floating support on the drive end bearing bracket of the electric machine assembly, the grab has guide surface, described Guide surface is tilted to the direction far from the drive end bearing bracket from inside to outside along the radial direction of the front shroud.

The oil pump component floating support on the drive end bearing bracket of the electric machine assembly, the buckle be it is multiple, it is multiple described Buckle circumferentially spaced arrangement.

For the oil pump component floating support on the drive end bearing bracket of the electric machine assembly, the buckle is plastic part.

On the drive end bearing bracket of the electric machine assembly, the drive end bearing bracket of the electric machine assembly limits the oil pump component floating support The oil pump chamber out, total oil inlet are located on the drive end bearing bracket.

For the oil pump component floating support on the drive end bearing bracket of the electric machine assembly, total oil inlet is located at the front end The top of lid.

On the drive end bearing bracket of the electric machine assembly, the drive end bearing bracket of the electric machine assembly limits the oil pump component floating support The oil pump chamber out, the drive end bearing bracket has the annular convex platform extended along axial direction to the direction far from the electric machine assembly, described Annular convex platform forms the side wall of the oil pump chamber, and roof and the annular convex platform of the oil pump chamber pass through threaded fastener phase Even.

The oil pump component floating support is on the drive end bearing bracket of the electric machine assembly, further includes: blimp, the blimp It is located at outside the outside wall surface of the oil pump chamber.

The oil pump component floating support is on the drive end bearing bracket of the electric machine assembly, further includes: low-pressure cover, the low-pressure cover It is located at outside the wall surface of the oil pump chamber and limits the low pressure chamber being connected to total oil inlet, the front end of the electric machine assembly Lid limits the oil pump chamber, and the low-pressure cover is connected with the drive end bearing bracket.

For the oil pump component floating support on the drive end bearing bracket of the electric machine assembly, the low-pressure cover has taper peripheral wall, And direction of the internal diameter of the low-pressure cover from close to total oil inlet to far from total oil inlet gradually becomes smaller.

The oil pump component floating support is on the drive end bearing bracket of the electric machine assembly, the electric machine assembly and the oil pump group Part is horizontal.

The oil pump component floating support is on the drive end bearing bracket of the electric machine assembly, and the oil pump component floating support is in institute It states on the drive end bearing bracket of electric machine assembly, is folded with sealing ring between the oil pump component and the drive end bearing bracket.

On the drive end bearing bracket of the electric machine assembly, the drive end bearing bracket of the electric machine assembly limits the oil pump component floating support The oil pump chamber out, for the oil pump component floating support on the drive end bearing bracket, the drive end bearing bracket is equipped with oil discharge passage and oil inlet Channel, one end of the oil discharge passage are connected with the oil pump chamber, and the other end forms total oil outlet, the oil inlet passage One end is connected to total oil inlet, and the other end is connected with the inlet port.

The invention also provides a kind of steering system, have it is above-mentioned it is any as described in electric oil pump assembly.

Possessed advantage is identical compared with the existing technology with above-mentioned electric oil pump assembly for the steering system, herein not It repeats again.

The invention also provides a kind of lubricating system, have it is above-mentioned it is any as described in electric oil pump assembly.

Possessed advantage is identical compared with the existing technology with above-mentioned electric oil pump assembly for the lubricating system, herein not It repeats again.

Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description Obviously, or practice through the invention is recognized.

Detailed description of the invention

Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:

Fig. 1-Figure 38 is the structural schematic diagram of electric oil pump assembly according to some embodiments of the invention；

Figure 39 be Fig. 1,3,4,5,8,9,10,12,13,14,17,18,19,21,22,24,26,27,29,31,32,34, 36, the cross-sectional view of the electric machine assembly in embodiment shown in 37；

Figure 40 is the motor group in embodiment shown in Fig. 2,6,7,11,15,16,20,23,25,28,30,33,35,38 The cross-sectional view of part；

Figure 41 is the assembling schematic diagram of the oil pump component of embodiment shown in Figure 10,11,12,24,25,34,35；

Figure 42 is the structural schematic diagram of shaft coupling according to an embodiment of the present invention；

Figure 43 is the structural schematic diagram of steering system according to an embodiment of the present invention；

Figure 44 is the structural schematic diagram of lubricating system according to an embodiment of the present invention.

Appended drawing reference:

Steering system 1, lubricating system 2,

Electric oil pump assembly 1000, total oil inlet 1010, total oil outlet 1020, oil pump chamber 1030, the roof of oil pump chamber 1031, low pressure chamber 1040；

Oil pump component 100, front shroud 110, clamping groove 111, lug 112, back shroud 120, oil pump shaft 130；

Electric machine assembly 200, drive end bearing bracket 210, support lugn 211, oil discharge passage 212, annular convex platform 213, oil channel 214, Oil inlet passage 215, motor casing 220, rear end cap 230, support base 231, stator 241, rotor 242, motor shaft 250, motor shafting oil Road 251, oil supplying hole 252, liquid cooling chamber 260, rear chamber 261 recycle oil duct 262, oil sucting cavity 263, oil baffle 271；

Elastic component 311, locating piece 312, magnetic part 321, positioning unit 322, buckle 331, grab 332, guide surface 333, Threaded connector 341；

Shaft coupling 410, connection holes 411, blimp 510, low-pressure cover 520.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be to be connected directly, the connection inside two elements can also be can be indirectly connected through an intermediary.For this field For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.

Electric oil pump assembly 1000 according to an embodiment of the present invention is described referring initially to Fig. 1-Figure 42.

Embodiment one

As Fig. 1, Fig. 4, Fig. 5, Figure 10, Figure 13, Figure 14, Figure 19, Figure 21, Figure 22, Figure 24, Figure 26, Figure 27, Figure 29, Figure 31, Shown in Figure 32, Figure 34, Figure 36, Figure 37, Figure 39, electric oil pump assembly 1000 according to an embodiment of the invention includes: motor Component 200 and oil pump component 100.

Wherein, oil pump component 100 is connect with 250 power coupling of motor shaft, and electric machine assembly 200 is for providing oil pump component The driving force of 100 operatings, such as the motor shaft 250 of electric machine assembly 200 can pass through the oil of shaft coupling 410 and oil pump component 100 Pump shaft 130 is connected, and certainly, electric machine assembly 200 is not limited to directly drive oil pump component 100, can also pass through gearbox or deceleration The transmission mechanisms such as device are connect with oil pump component 100.

Oil pump component 100 works under the driving of electric machine assembly 200, and low pressure oil is changed into high pressure oil output, oil pump Component 100 can be multiple structural forms, for example oil pump component 100 can be external gear rotary pump, cycloid gear pump, vane pump Or plunger pump etc., electric machine assembly 200 can be various types of motors such as synchronous motor, asynchronous machine.

Oil pump component 100 is mounted on the end of electric machine assembly 200, for example oil pump component 100 may be mounted at electric machine assembly On 200 drive end bearing bracket 210, oil pump component 100 can be directly installed on drive end bearing bracket 210 or oil pump component 100 can pass through Other mounting structures (such as support plate) are indirectly attached on drive end bearing bracket 210, specifically, the front shroud 110 of oil pump component 100 It can be supported on the drive end bearing bracket 210 of electric machine assembly 200, wherein front shroud 110 is the lid of the power intake of oil pump component 100 Plate, i.e. oil pump shaft 130 are stretched out from front shroud 110, and accordingly, back shroud 120 is the cover board of the other end of oil pump component 100.

Electric oil pump assembly 1000 has total oil inlet 1010 and total oil outlet 1020, and oil liquid enters from total oil inlet 1010 Electric oil pump assembly 1000, and flowed out from total oil outlet 1020.Oil pump component 100 has inlet port and oil discharge outlet, and low pressure is (often Pressure) it is oily out of, inlet port sucking oil pump component 100 cavity, and be changed into high pressure oil and be discharged from oil discharge outlet.

Motor slinger 251 is equipped in the motor shaft 250 of electric machine assembly 200, motor slinger 251 can be along motor shaft 250 it is axially extending, motor slinger 251 is connected to total oil inlet 1010, the inlet port of oil pump component 100 and motor slinger 251 connections, the oil discharge outlet of oil pump component 100 are connected to total oil outlet 1020.

That is, the flow path of oil liquid are as follows: the suction of total oil inlet 1010- motor slinger 251- oil pump component 100 Low pressure oil, can be changed into high pressure oil, and circulate by the total oil outlet 1020 of hydraulic fluid port-oil pump component 100 oil discharge outlet-in this way Oil liquid the heat of electric machine assembly 200 can be taken away by motor shaft 250, guarantee 200 the operation is stable of electric machine assembly, electric machine assembly 200 need not be separately provided heat-sink unit, can reduce the volume and weight of electric oil pump assembly 1000.

Electric oil pump assembly 1000 according to an embodiment of the present invention realizes oil pump group by setting motor slinger 251 The oil suction of part 100 facilitates the heat dissipation performance and job stability that promote electric oil pump assembly 1000, and integrated level is high, light weight Change horizontal high.

Electric oil pump assembly 1000 in accordance with a preferred embodiment of the present invention, such as Fig. 1, Fig. 4, Fig. 5, Figure 10, Figure 13, figure 14, shown in Figure 19, Figure 21, Figure 22, Figure 24, Figure 26, Figure 27, Figure 29, Figure 31, Figure 32, Figure 34, Figure 36, Figure 37, Figure 39, motor Component 200 may include: drive end bearing bracket 210, motor casing 220, rear end cap 230, stator 241 and rotor 242.

Drive end bearing bracket 210 is mounted on the front end of motor casing 220, for example drive end bearing bracket 210 can pass through threaded fastener and motor The front end of shell 220 is connected, and rear end cap 230 closes the rear end of motor casing 220, for example rear end cap 230 can pass through threaded fastener It is connected with the rear end of motor casing 220, it should be noted that the output end (right side in Fig. 1-Figure 38 of front end expression electric machine assembly 200 End), rear end indicates the one end (left end in Fig. 1-Figure 38) for being axially away from output end.

Electric machine assembly 200 can have liquid cooling chamber 260, and liquid cooling chamber 260 can be connected to total oil inlet 1010, and motor shaft Oil duct 251 is connected to by liquid cooling chamber 260 with total oil inlet 1010.

It is understood that liquid cooling chamber 260 can be the indoor spare space in cabin of electric machine assembly 200, the flowing of oil liquid Path are as follows: inlet port-oil pump component 100 of total oil inlet 1010- liquid cooling chamber 260- motor slinger 251- oil pump component 100 The total oil outlet 1020 of oil discharge outlet-.

The oil liquid of flowing is filled in the cabin of electric machine assembly 200, the components inside electric machine assembly 200 are immersed in oil liquid In, for example stator 241 and rotor 242 can come into full contact with oil liquid, it, can be to avoid stator since the thermal capacity of oil liquid is larger 241 and the localized hyperthermia that is generated by the fluctuation of load of rotor 242, the oil liquid of flowing provide heat dissipation and lubrication simultaneously for movement parts, Guarantee 200 the operation is stable of electric machine assembly, and operating noise can be reduced.

The rotor 242 of electric machine assembly 200 can be immersed in oil liquid (low pressure oil), and such oil liquid can play sluggish rotor The effect of 242 rotations, to buffer the anxious acceleration or the anxious problem slowed down and inertia modulus is excessive of rotor 242, when electric oil pump is total When being used for steering system 1 at 1000, it can prevent electric machine assembly 200 from throwing impact when carrying to oil circuit is turned to, the feel of steering is more Good, steering wheel is not easy to shake.

Liquid cooling chamber 260 includes circulation oil duct 262 and rear chamber 261.

Wherein, circulation oil duct 262 is between stator 241 and motor casing 220, and recycles oil duct 262 along electric machine assembly 200 It is axially extending, as shown in figure 39, circulation oil duct 262 can be to be multiple, such as four in Figure 39, and multiple circulation oil ducts 262 can radiate uniformly everywhere along the circumferentially spaced arrangement of stator 241, the circumferential direction of such electric machine assembly 200, recycle oil duct 262 can be connected to total oil inlet 1010, for example total oil inlet 1010 can be located at the top of electric oil pump assembly 1000, with When oil liquid flows into, be conducive to gas discharge, total oil inlet 1010 can be connected with a circulation oil duct 262 of the top.

Rear chamber 261 is located between rear end cap 230 and stator 241, motor shaft 250 and rotor 242, rear chamber 261 with follow Ring oil duct 262 is connected to, and the rear end of especially each circulation oil duct 262 can be connected with rear chamber 261.

Motor slinger 251 axially extends, and motor slinger 251 far from oil pump component 100 open at one end, and And motor slinger 251 is connected at the end with liquid cooling chamber 260, specifically, motor slinger 251 is at the end and 261 phase of rear chamber Even, rear end cap 230 can have support base 231, and support base 231 is used to support the rear end (passing through bearing) of motor shaft 250, such as scheme 1, Fig. 4, Fig. 5, Figure 10, Figure 13, Figure 14, Figure 19, Figure 21, Figure 22, Figure 24, Figure 26, Figure 27, Figure 29, Figure 31, Figure 32, Figure 34, figure 36, it can be equipped with oil passage shown in Figure 37, on support base 231 to be connected to rear chamber 261 and motor slinger 251, prop up in this way The space for the relative closure that support seat 231, bearing are formed can prevent in liquid cooling chamber 260 caused by 251 oil suction of motor slinger Oil liquid turbulent flow.

The other end (close to one end of oil pump component 100) of motor slinger 251 is equipped with the oil supplying hole radially extended 252, oil supplying hole 252 can be connected to inlet port.Oil supplying hole 252 can be to be multiple, such as four, multiple oil supplying holes 252 are along week To evenly-spaced setting so that the flowing of oil liquid to the active force of motor shaft 250 radially respectively to equilibrium, thus motor shaft Oil liquid in oil duct 251 is flowed on the rotation of motor shaft 250 without influence.

As Fig. 1, Fig. 4, Fig. 5, Figure 10, Figure 13, Figure 14, Figure 19, Figure 21, Figure 22, Figure 24, Figure 26, Figure 27, Figure 29, Figure 31, Shown in Figure 32, Figure 34, Figure 36, Figure 37, drive end bearing bracket 210 can have the branch protruded along axial direction to the rotor 242 of electric machine assembly 200 Flange 211 is supportted, support lugn 211 can be circular ring shape, and support lugn 211 is used to support the bearing of electric machine assembly 200, support convex Edge 211, motor shaft 250, electric machine assembly 200 bearing limit oil sucting cavity 263 jointly, oil sucting cavity 263 is connected with inlet port, supply Oilhole 252 is connected with oil sucting cavity 263.Oil sucting cavity 263, which is equivalent to, provides the cushion space of 100 oil suction of oil pump component, convenient for oil Liquid is reserved from the relatively small oil supplying hole 252 in aperture.

Further, oil baffle 271 can be equipped between stator 241 and drive end bearing bracket 210, oil baffle 271 can be oil resistant Property material is made, such as malthoid etc., as Fig. 1, Fig. 4, Fig. 5, Figure 10, Figure 13, Figure 14, Figure 19, Figure 21, Figure 22, Figure 24, Figure 26, Shown in Figure 27, Figure 29, Figure 31, Figure 32, Figure 34, Figure 36, Figure 37, oil baffle 271 can be annular, and oil baffle 271 can cover It is located at outside support lugn 211, a part of of the close drive end bearing bracket 210 of stator 241 can be set in outside oil baffle 271, oil baffle 271 can prevent the directly oil suction out of neighbouring cavity of oil pump component 100 so that oil liquid in electric machine assembly 200 everywhere in Flowing is good, with equilibrium heat dissipation.

Certainly, between stator 241 and oil baffle 271 may exist gap, between oil baffle 271 and rotor 242 there is also Gap, but gap does not influence the general flow direction of oil liquid.In this manner it is ensured that the bulk flow path of oil liquid are as follows: total oil inlet The suction of 1010- circulation oil duct 262- rear chamber 261- motor slinger 251- oil supplying hole 252- oil sucting cavity 263- oil pump component 100 The total oil outlet 1020 of hydraulic fluid port-oil pump component 100 oil discharge outlet-.

Embodiment two

As Fig. 2, Fig. 6, Fig. 7, Figure 11, Figure 15, Figure 16, Figure 20, Figure 23, Figure 25, Figure 28, Figure 30, Figure 33, Figure 35, Figure 38, Shown in Figure 40, electric oil pump assembly 1000 according to an embodiment of the invention includes: electric machine assembly 200 and oil pump component 100.

Electric machine assembly 200 has liquid cooling chamber 260, and liquid cooling chamber 260 can be connected to total oil inlet 1010, and oil liquid passes through liquid cooling Chamber 260 sucks oil pump component 100, and liquid cooling chamber 260 can be the indoor spare space in cabin of electric machine assembly 200, and oil liquid passes through total Oil inlet 1010 flows into liquid cooling chamber 260, and oil liquid is filled in liquid cooling chamber 260, the components being equivalent to inside electric machine assembly 200 (such as stator 241, rotor 242 etc.) is immersed in oil liquid.

The oil liquid of flowing is filled in liquid cooling chamber 260, the components inside electric machine assembly 200 are immersed in oil liquid, such as Stator 241 and rotor 242 can come into full contact with oil liquid, can be to avoid stator 241 and rotor since the thermal capacity of oil liquid is larger The oil liquid of 242 localized hyperthermias generated by the fluctuation of load, flowing provides heat dissipation and lubrication simultaneously for movement parts, guarantees motor group 200 the operation is stable of part, and operating noise can be reduced.

Liquid cooling chamber 260 includes circulation oil duct 262, and circulation oil duct 262 is located at the stator 241 and motor group of electric machine assembly 200 Between the motor casing 220 of part 200, it is to be understood that the cavity between motor casing 220 and stator 241 can form recycle oil Road 262, circulation oil duct 262 can be along the axially extending of electric machine assembly 200, the inlet ports and circulation oil duct 262 of oil pump component 100 Connection, the oil discharge outlet of oil pump component 100 are connected to total oil outlet 1020.

That is, the flow path of oil liquid are as follows: the oil suction of total oil inlet 1010- circulation oil duct 262- oil pump component 100 Low pressure oil, can be changed into high pressure oil by the total oil outlet 1020 of the oil discharge outlet-of mouth-oil pump component 100 in this way, and circulate Oil liquid can take away the heat of electric machine assembly 200, and a large amount of heat can be especially taken away by stator 241, guarantee motor group Heat-sink unit need not be separately provided in 200 the operation is stable of part, electric machine assembly 200, can reduce the volume of electric oil pump assembly 1000 And weight, and the formation circulated is simple, it is easily fabricated.

Electric oil pump assembly 1000 according to an embodiment of the present invention realizes oil pump component by setting circulation oil duct 262 100 oil suction and the heat dissipation of electric machine assembly 200 facilitate the heat dissipation performance and the operation is stable that promote electric oil pump assembly 1000 Property, and integrated level is high, lightweight is horizontal high.

Electric oil pump assembly 1000 in accordance with a preferred embodiment of the present invention, such as Fig. 2, Fig. 6, Fig. 7, Figure 11, Figure 15, figure 16, shown in Figure 20, Figure 23, Figure 25, Figure 28, Figure 30, Figure 33, Figure 35, Figure 38, electric machine assembly 200 may include: drive end bearing bracket 210, Motor casing 220, rear end cap 230, stator 241 and rotor 242.

Rear end cap 230 closes the rear end of motor casing 220 to form the rear chamber 261 of liquid cooling chamber 260, and circulation oil duct 262 can Think it is multiple, such as four in Figure 40, and multiple circulation oil ducts 262 circumferentially spaced can be arranged, multiple circulation oil ducts 262 are connected to by rear chamber 261.Rear chamber 261 is located between rear end cap 230 and stator 241, motor shaft 250 and rotor 242, Rear chamber 261 is connected to circulation oil duct 262, and the rear end of especially each circulation oil duct 262 can be connected with rear chamber 261.

Multiple circulation oil ducts 262 at least one of be connected with total oil inlet 1010, oil liquid elder generation is from total oil inlet 1010 262 cocurrent of circulation oil duct is flowed into rear chamber 261, at least one of multiple circulation oil ducts 262 recycle the oil in oil duct 262 Liquid flows from back to front and is connected with inlet port, i.e. the oil liquid in the circulation oil duct 262 is from end cap 210 forward of rear chamber 261 Direction flowing, and then by inlet port flow into oil pump component 100, as shown in figure 40, it is multiple recycle oil ducts 262 in a part Oil liquid in circulation oil duct 262 flows from back to front, and the oil liquid in another part circulation oil duct 262 flows from front to back, and oil Two kinds of different circulation oil ducts 262 of liquid flow direction circumferentially interlaced arrangement.Multiple circulation oil ducts 262 can design in pairs, oil The flow direction of liquid can be flowed with staggered designs, oil liquid in 220 body-internal-circulation of motor casing, to radiate to electric machine assembly 200.

In a specific embodiment, it is multiple circulation oil ducts 262 in one (such as in Figure 40 uppermost one follow Ring oil duct 262) be connected with total oil inlet 1010 so that oil liquid by it is multiple circulation oil ducts 262 in an inflow liquid cooling chambers 260, Total oil inlet 1010 can be located at the top of electric oil pump assembly 1000, when oil liquid flows into, to be conducive to gas discharge.

Such as Fig. 2, Fig. 6, Fig. 7, Figure 11, Figure 15, Figure 16, Figure 20, Figure 23, Figure 25, Figure 28, Figure 30, Figure 33, Figure 35, Figure 38 It is shown, oil channel 214 can be equipped on drive end bearing bracket 210, circulation oil duct 262 is connected to inlet port by oil channel 214.

Drive end bearing bracket 210 can have the support lugn 211 protruded along axial direction to the rotor 242 of electric machine assembly 200, support convex Edge 211 can be circular ring shape, and support lugn 211 is used to support the bearing of electric machine assembly 200, support lugn 211, motor shaft 250, The bearing of electric machine assembly 200 limits oil sucting cavity 263 jointly, and oil sucting cavity 263 is connected with inlet port, and oil channel 214 can run through Support lugn 211 is to be connected to oil sucting cavity 263 and circulation oil duct 262.Oil sucting cavity 263, which is equivalent to, provides 100 oil suction of oil pump component Cushion space, the space of relative closure that support lugn 211, bearing are formed can prevent caused by 100 oil suction of oil pump component Oil liquid turbulent flow in liquid cooling chamber 260.

Further, oil baffle 271 can be equipped between stator 241 and drive end bearing bracket 210, oil baffle 271 can be oil resistant Property material is made, such as malthoid etc., as Fig. 2, Fig. 6, Fig. 7, Figure 11, Figure 15, Figure 16, Figure 20, Figure 23, Figure 25, Figure 28, Figure 30, Shown in Figure 33, Figure 35, Figure 38, oil baffle 271 can be annular and be set in outside support lugn 211 that stator 241 leans on front end The a part of of lid 210 can be set in outside oil baffle 271, and oil baffle 271 can prevent oil pump component 100 directly from neighbouring chamber Internal oil suction so that oil liquid in electric machine assembly 200 everywhere in flowing it is good, with equilibrium heat dissipation.It should be noted that oil baffle Region corresponding with oil channel 214 can hollow out on 271, hinder oil pump component 100 to pass through oil channel to prevent backstop scraper ring 271 214 oil suctions.

Certainly, between stator 241 and oil baffle 271 may exist gap, between oil baffle 271 and rotor 242 there is also Gap, but gap does not influence the general flow direction of oil liquid.In this manner it is ensured that the bulk flow path of oil liquid are as follows: total oil inlet 1010- recycles the oil suction of oil duct 262- rear chamber 261- circulation oil duct 262- oil channel 214- oil sucting cavity 263- oil pump component 100 The total oil outlet 1020 of the oil discharge outlet-of mouth-oil pump component 100.

Embodiment three

As shown in Fig. 3, Fig. 8, Fig. 9, Figure 12, Figure 17, Figure 18, electric oil pump assembly according to an embodiment of the invention 1000 include: electric machine assembly 200 and oil pump component 100.

The electric machine assembly 200 of electric oil pump assembly 1000 has oil pump chamber 1030, and the drive end bearing bracket 210 of electric machine assembly 200 limits Oil pump chamber 1030 is made, oil pump chamber 1030 is not merely limited by drive end bearing bracket 210, and drive end bearing bracket 210 can only limit oil pump chamber 1030 part wall, the cabin of electric machine assembly 200 and oil pump chamber 1030 separate, the cabin of electric machine assembly 200 and oil pump chamber 1030 are separated by the drive end bearing bracket 210 of electric machine assembly 200.Electric machine assembly 200 can be liquid-cooled (oil injection type), electric machine assembly The oil liquid of 200 cooling oil and oil pump component 100 separates, for example electric machine assembly 200 can have liquid cooling chamber 260, liquid cooling Chamber 260 is isolated with oil pump component 100, and specifically, liquid cooling chamber 260 can be isolated with oil pump component 100 by drive end bearing bracket 210.

Oil pump component 100 is located in oil pump chamber 1030, and the inlet port of oil pump component 100 is connected to total oil inlet 1010, oil The oil discharge outlet of pump assembly 100 is connected to total oil outlet 1020, one in total oil inlet 1010 and total oil outlet 1020 and oil pump Chamber 1030 is connected to.

In this way, the periphery of oil pump component 100 is wrapped up by oil liquid, the vibrating noise of oil pump component 100 can be by oil pump chamber Oil liquid in 1030 is absorbed and is reflected by the wall surface of oil pump chamber 1030, to reduce the operating noise of electric oil pump assembly 1000.

Electric oil pump assembly 1000 according to an embodiment of the present invention can be with by the way that relatively independent oil pump chamber 1030 is arranged The operating noise of oil pump component 100 is effectively absorbed, and the pump oil of oil pump component 100 not will receive the oil in electric machine assembly 200 The dynamic interference of liquid stream, the pump oil of electric oil pump assembly 1000 is more efficient, the operation is stable.

The oil pump chamber 1030 of an alternative embodiment is connected to total oil inlet 1010 according to the present invention, as shown in figure 18, oil The inlet port of pump assembly 100 can be connected with oil pump chamber 1030, when oil pump chamber 1030 is connected to total oil inlet 1010, oil pump component 100 inlet port can be connected to by oil pump chamber 1030 with total oil inlet 1010, the oil discharge outlet of oil pump component 100 and total oil outlet 1020 connections.

Drive end bearing bracket 210 can be equipped with oil discharge passage 212, one end of oil discharge passage 212 and the oil discharge outlet phase of oil pump component 100 Even, the other end of oil discharge passage 212 forms total oil outlet 1020, and drive end bearing bracket 210 is additionally provided with oil inlet passage 215, total oil inlet 1010 are connected to oil pump chamber 1030 by oil inlet passage 215.

The flow path of oil liquid are as follows: the suction of total oil inlet 1010- oil inlet passage 215- oil pump chamber 1030- oil pump component 100 Hydraulic fluid port-oil pump component 100 oil discharge outlet-total the oil outlet 1020 of oil discharge passage 212-, can be changed into high pressure for low pressure oil in this way Oil, and the periphery of oil pump component 100 is wrapped up by low pressure oil, the vibrating noise of oil pump component 100 can be by oil pump chamber 1030 Low pressure oil is absorbed and is reflected by the wall surface of oil pump chamber 1030, to reduce the operating noise of electric oil pump assembly 1000.

The pressure of oil pump chamber 1030 is small, and convenient for sealing, the effect of high-pressure bottle is not present in the wall surface of oil pump chamber 1030, it is not necessary to A possibility that being limited to the influence of intensity, providing light-weight design, the wall surface of oil pump chamber 1030 can be set relatively thin, such as The wall surface of oil pump chamber 1030 can be made of thin-wall metal, to reduce the occupied space and weight of electric oil pump assembly 1000.

The oil pump chamber 1030 of an alternative embodiment is connected to total oil inlet 1010 according to the present invention, as Fig. 3, Fig. 8, Fig. 9, Shown in Figure 12, Figure 17, oil pump chamber 1030 is connected with the oil discharge outlet of oil pump component 100, and oil pump chamber 1030 and total oil outlet 1020 Connection, the oil discharge outlet of oil pump component 100 can be connected to by oil pump chamber 1030 with total oil outlet 1020, the suction of oil pump component 100 Hydraulic fluid port is connected to total oil inlet 1010.

Drive end bearing bracket 210 is equipped with oil discharge passage 212 and oil inlet passage 215, one end and 1030 phase of oil pump chamber of oil discharge passage 212 Even, the other end of oil discharge passage 212 forms total oil outlet 1020, and one end of oil inlet passage 215 is connected to total oil inlet 1010, into The other end in oily channel 215 is connected with inlet port.

The flow path of oil liquid are as follows: inlet port-oil pump group of total oil inlet 1010- oil inlet passage 215- oil pump component 100 The oil discharge outlet of the part 100-total oil outlet 1020 of oil pump chamber 1030- oil discharge passage 212-, can be changed into high pressure for low pressure oil in this way Oil.

On the one hand, the periphery of oil pump component 100 is wrapped up by high pressure oil, and the vibrating noise of oil pump component 100 can be by oil pump High pressure oil in chamber 1030 is absorbed and is reflected by the wall surface of oil pump chamber 1030, is made an uproar with reducing the work of electric oil pump assembly 1000 Sound.

On the other hand, oil pump chamber 1030 can play the role of eliminating oil liquid pulsation and carry out fluid noise reduction, pass through design The elimination to various frequency noises may be implemented in the size of oil pump chamber 1030.

In another aspect, the high-voltage oil liquid of oil pump chamber 1030 can apply axial thrust P to oil pump component 100, such as high Before pressure oil can make oil pump component 100 be supported on electric machine assembly 200 pressure that the back shroud 120 of oil pump component 100 applies On end cap 210, such oil pump component 100 in the process of running can be by additional axial force, the fixation side of oil pump component 100 Formula constraint tails off, and oil pump component 100 can keep relative stability and fix in the process of running.

Example IV

As shown in Figure 1, Figure 2, shown in Fig. 3, Figure 19, Figure 20, Figure 29, Figure 30, electric oil pump according to an embodiment of the invention Assembly 1000 includes: electric machine assembly 200, oil pump component 100 and elastic component 311.

100 floating mount of oil pump component can be existed in the end of electric machine assembly 200, such as oil pump component 100 with floating mount On the drive end bearing bracket 210 of electric machine assembly 200, oil pump component 100 can directly floating mount on drive end bearing bracket 210 or oil pump group Part 100 can floating mount be on drive end bearing bracket 210 indirectly by other mounting structures (such as support plate), specifically, oil pump The front shroud 110 of component 100 can be supported on the drive end bearing bracket 210 of electric machine assembly 200, and wherein front shroud 110 is oil pump component The cover board of 100 power intake, i.e. oil pump shaft 130 are stretched out from front shroud 110, and accordingly, back shroud 120 is oil pump component The cover board of 100 other end.

311 elastic connection of elastic component is between electric machine assembly 200 and oil pump component 100, for example oil pump component 100 floats and pacifies On drive end bearing bracket 210, elastic component 311 can be with elastic connection between drive end bearing bracket 210 and oil pump component 100, with to oil pump group Part 100 apply axial pre tightening force or elastic component 311 towards electric machine assembly 200 contact with oil pump component 100 or it is connected with to The application of oil pump component 100 makes axial pre tightening force of 100 floating support of oil pump component on the drive end bearing bracket 210 of electric machine assembly 200.

Oil pump component 100 is pre-compacted on the drive end bearing bracket 210 of electric machine assembly 200 under the elastic force effect of elastic component 311, For example elastic component 311 can be connected to the shell of oil pump component 100 and the drive end bearing bracket of electric machine assembly 200 with being stretched in the axial direction Between 210, the lug 112 radially protruded, lug 112 and drive end bearing bracket 210 can be equipped on the shell of oil pump component 100 Can be axially spaced, elastic component 311 with elastic stretching can be connected between lug 112 and drive end bearing bracket 210, or elasticity Part 311 can be compressively connected between the shell of oil pump component 100 and the drive end bearing bracket 210 of electric machine assembly 200 in the axial direction.

Elastic component 311 is to the elastic pre-stress of oil pump component 100, so that oil pump component 100 is pre-compacted in electric machine assembly On 200 drive end bearing bracket 210, guarantee the leakproofness of oil pump component 100, and in assembly without carrying out spiral shell on oil pump component 100 The locking of bolt large torque, the pretightning force that elastic component 311 provides need to only guarantee that oil pump component 100 is installed, and can reduce in this way The operating friction power of oil pump component 100, promotes the work efficiency of oil pump component 100, and the mechanical efficiency of oil pump component 100 is higher.

It since oil pump component 100 uses floated installation, does not need bolt and is fixed on shell, in the work for applying certain force There can be certain removable momentum radial and axial with lower oil pump component 100, be rotated in the motor shaft 250 of electric machine assembly 200 When, the oil pump shaft 130 of oil pump component 100 can be effectively prevented from adaptively to the heart because of motor shaft 250, shaft coupling 410 and oil pump 130 three's decentraction of axis and bring noise, and due to the characteristic of the heart, can adaptively reduce to processing motor shaft 250, connection The requirement on machining accuracy of axis device 410 and oil pump shaft 130 is needed with reducing processing cost and the assembly precision of electric oil pump assembly 1000 It asks.

Further, the output pulse of oil pump component 100 can overcome the elastic force of elastic component 311, make oil pump component 100 Axial displacement occurs, to reduce the output pulse for even being eliminated oil pump component 100.

Electric oil pump assembly 1000 according to an embodiment of the present invention pre-installs oil pump component by setting elastic component 311 100, and make 100 floating mount of oil pump component, it can reduce the operating friction power of oil pump component 100, promote oil pump component 100 Work efficiency, reduces the output pulse of oil pump component 100, and electric oil pump assembly 1000 has the characteristic of adaptive centering, can To reduce the machining accuracy and assembly precision demand of electric oil pump assembly 1000.

Electric oil pump assembly 1000 in accordance with a preferred embodiment of the present invention, as shown in Figure 1, Figure 2, Fig. 3, Figure 19, Figure 20, figure 29, shown in Figure 30, electric oil pump assembly 1000 can also include: locating piece 312, locating piece 312 be connected to oil pump component 100 with Between drive end bearing bracket 210, and at least one of drive end bearing bracket 210 of locating piece 312 and oil pump component 100 and electric machine assembly 200 edge Radial clearance fit.

Such as in an alternative embodiment, locating piece 312 can be fixedly connected (between no radial direction with oil pump component 100 Gap activity), locating piece 312 can be with the radially clearance fit of drive end bearing bracket 210；In another alternative embodiment, it positions Part 312 can radially clearance fit, locating piece 312 can be fixedly connected with (no radial direction with drive end bearing bracket 210 with oil pump component 100 Gap activity)；In an alternative embodiment, locating piece 312 can with the radially clearance fit of oil pump component 100, it is fixed Position part 312 can be with the radially clearance fit of drive end bearing bracket 210.

Locating piece 312 is for being pre-positioned and transmit torque, according to locating piece 312 and oil pump component 100 or drive end bearing bracket 210 Clearance fit surplus can limit the radial floating stroke of oil pump component 100, and guarantee oil pump component 100 always in radial direction Near heart district.

Specifically, locating piece 312 can be bolt, and the periphery of oil pump component 100 can be equipped with lug 112, and lug 112 can To be equipped with location hole, bolt-through location hole, and bolt is threadedly coupled with drive end bearing bracket 210, bolt and location hole clearance fit, with Oil pump component 100 is set to make radial floating.In this way, locating piece 312 is fixed with respect to 200 position of electric machine assembly in the axial direction, no It is easy to fall off, and it is more stable to transmit torque.

Elastic component 311 can be spring, and elastic component 311 is set in outside bolt, and spring is only against lug 112 and spiral shell Between the head of bolt.In the course of work of electric oil pump assembly 1000, lug 112 can only support spring, in oil pump component 100 Under the action of certain power, oil pump component 100 can do axial floating, make spring further compressed towards the head of bolt or Reduce suppressed range.

There are many generation types of lug 112, for example, oil pump component 100 front shroud 110 at least partly edge along diameter To lug 112 is extended outwardly to form, such lug 112 is bonded substantially with the drive end bearing bracket 210 of electric machine assembly 200, oil pump component 100 pre-installation is more stable.

Alternatively, lug 112 can be axially spaced with drive end bearing bracket 210, such as the circumferential shell of oil pump component 100 At least partly edge is extended radially outward to form lug 112, and in this embodiment, elastic component 311 can with elastic stretching It is connected between lug 112 and drive end bearing bracket 210, certainly, elastic component 311 can also be only against such as the elasticity as described in above-described embodiment Between lug 112 and the head of bolt.

Locating piece 312 and elastic component 311 can be it is multiple, lug 112 also to be multiple, multiple lugs 112 circumferentially between Arranged apart, multiple locating pieces 312 can be along the circumferentially spaced arrangement of oil pump component 100, and multiple elastic components 311 can be along oil The circumferentially spaced arrangement of pump assembly 100, it is preferable that lug 112 can circumferentially evenly-spaced arrangement, multiple locating pieces 312, multiple elastic components 311, multiple lugs 112 correspond.In this way, all directions of oil pump component 100 in the circumferential is pre- Installing force is more balanced, and oil pump component 100 when floating in the axial direction respectively to consistent, when floating radially, in all directions The constraint being subject to is also more balanced.

Embodiment five

As shown in Fig. 4-Fig. 9, Figure 21-Figure 23, Figure 31-Figure 33, electric oil pump assembly according to an embodiment of the invention 1000 include: electric machine assembly 200, oil pump component 100 and magnetic part 321.

Radially floating mount can be along diameter in the end of electric machine assembly 200, such as oil pump component 100 for oil pump component 100 To floating mount on the drive end bearing bracket 210 of electric machine assembly 200, oil pump component 100 can directly radially floating mount in front end On lid 210 or oil pump component 100 can radially floating mount exists indirectly by other mounting structures (such as support plate) On drive end bearing bracket 210, specifically, the front shroud 110 of oil pump component 100 can be supported on the drive end bearing bracket 210 of electric machine assembly 200, Wherein front shroud 110 is the cover board of the power intake of oil pump component 100, i.e. oil pump shaft 130 is stretched out from front shroud 110, corresponding Ground, back shroud 120 are the cover board of the other end of oil pump component 100.

Magnetic part 321 is for applying axial magnetic force to oil pump component 100, the branch so that oil pump component 100 radially floats Support is in the end of electric machine assembly 200, for example is supported on drive end bearing bracket 210, and magnetic part 321 can be permanent magnet.Such as magnetic part 321 can be fixedly connected with electric machine assembly 200, and so that oil pump component 100 is radially floated by the magnetic to oil pump component 100 The end (drive end bearing bracket 210) or magnetic part 321 for being mounted on electric machine assembly 200 can be fixedly connected with oil pump component 100, and Making oil pump component 100 by the magnetic effect to electric machine assembly 200, radially floating mount is (preceding in the end of electric machine assembly 200 End cap 210) or magnetic of the magnetic part 321 to oil pump component 100 and the magnetic effect to electric machine assembly 200 make oil pump component 100 radially floating mount in the end (drive end bearing bracket 210) of electric machine assembly 200.

Radially floating mount is on electric machine assembly 200 for oil pump component 100, in assembly without on oil pump component 100 The locking of bolt large torque is carried out, the preload magnetic attraction that magnetic part 321 provides need to only guarantee that oil pump component 100 is installed, this Sample can reduce the operating friction power of oil pump component 100, promote the work efficiency of oil pump component 100, the machinery of oil pump component 100 It is more efficient.

Due to magnetic-adsorption and optional limit, oil pump component 100 uses floated installation, does not need bolt and be fixed on shell On body, oil pump component 100 radially can have certain removable momentum under the action of applying certain force, in electric machine assembly 200 Motor shaft 250 when rotating, the oil pump shaft 130 of oil pump component 100 can adaptively to the heart, be effectively prevented from because motor shaft 250, Shaft coupling 410 and 130 three's decentraction of oil pump shaft and bring noise, and due to the characteristic of the heart, can adaptively reduce pair The requirement on machining accuracy of motor shaft 250, shaft coupling 410 and oil pump shaft 130 is processed, being processed into for electric oil pump assembly 1000 is reduced Sheet and assembly precision demand.

Electric oil pump assembly 1000 according to an embodiment of the present invention pre-installs oil pump component by setting magnetic part 321 100, and make 100 floating mount of oil pump component, it can reduce the operating friction power of oil pump component 100, promote oil pump component 100 Work efficiency, and electric oil pump assembly 1000 has the characteristic of adaptive centering, can reduce the processing of electric oil pump assembly 1000 Precision and assembly precision demand.

Electric oil pump assembly 1000 in accordance with a preferred embodiment of the present invention, such as Fig. 4, Fig. 6, Fig. 8, Figure 21, Figure 23, figure 31, shown in Figure 33, magnetic part 321 can be connected with one in the front shroud 110 of oil pump component 100,210 the two of drive end bearing bracket, Another in front shroud 110,210 the two of drive end bearing bracket can be made of ferrimagnet.

Optionally, another in 210 the two of front shroud 110 and drive end bearing bracket is equipped with corresponding with magnetic part 321 recessed Slot, one at least partly protruded from 210 the two of front shroud 110 and drive end bearing bracket of magnetic part 321, and with groove radially between Gap cooperation, the rest part of magnetic part 321 are embedded in one in front shroud 110 and 210 the two of drive end bearing bracket.

For example, magnetic part 321 can be fixedly connected with the front shroud 110 of oil pump component 100, a part of magnetic part 321 It is embedded in front shroud 110, another part protrudes from front shroud 110, can be equipped with and magnetism on the drive end bearing bracket 210 of electric machine assembly 200 The corresponding groove of part 321, the part that magnetic part 321 protrudes from front shroud 110 can protrude into groove, and with groove radially between Gap cooperation, the drive end bearing bracket 210 of electric machine assembly 200 can be made of ferrimagnet, such as carbon steel material.

Alternatively, magnetic part 321 can be fixedly connected with the drive end bearing bracket 210 of electric machine assembly 200, a part of magnetic part 321 It is embedded in drive end bearing bracket 210, another part protrudes from drive end bearing bracket 210, can be equipped with and magnetism on the front shroud 110 of oil pump component 100 The corresponding groove of part 321, the part that magnetic part 321 protrudes from drive end bearing bracket 210 can protrude into groove, and with groove radially between Gap cooperation, the front shroud 110 of oil pump component 100 can be made of ferrimagnet, such as carbon steel material.

Optionally, another in 210 the two of front shroud 110 and drive end bearing bracket is equipped with corresponding with magnetic part 321 convex Platform, magnetic part 321 are equipped with groove, boss protrude into groove and with groove radially clearance fit.

For example, magnetic part 321 can be fixedly connected with the front shroud 110 of oil pump component 100, the front end of electric machine assembly 200 Boss corresponding with magnetic part 321 can be equipped on lid 210, magnetic part 321 is equipped with groove corresponding with boss, boss The groove can be protruded into, and radially clearance fit, the drive end bearing bracket 210 of electric machine assembly 200 can be ferrimagnet with groove It is made, such as carbon steel material.

Alternatively, magnetic part 321 can be fixedly connected with the drive end bearing bracket 210 of electric machine assembly 200, the front cover of oil pump component 100 Boss corresponding with magnetic part 321 can be equipped on plate 110, magnetic part 321 is equipped with groove corresponding with boss, boss The groove can be protruded into, and radially clearance fit, the front shroud 110 of oil pump component 100 can be ferrimagnet with groove It is made, such as carbon steel material.

It is understood that magnetic part 321 can be used for be pre-positioned and transmit torque, according to magnetic part 321 with it is corresponding The clearance fit surplus of boss or groove can limit the radial floating stroke of oil pump component 100, and guarantee oil pump component 100 Always near radial center area.

Magnetic part 321 can be multiple, the circumferentially spaced arrangement of multiple magnetic parts 321, it is preferable that magnetic part 321 can Think circumferentially evenly-spaced be arranged between drive end bearing bracket 210 and front shroud 110.In this way, oil pump component 100 is in the circumferential The pre-installation power of all directions is more balanced, and when floating radially, the constraint being subject in all directions is also more balanced.

The electric oil pump assembly 1000 of another preferred embodiment according to the present invention, such as Fig. 5, Fig. 7, Fig. 9, Figure 22, Figure 32 Shown, electric oil pump assembly 1000 includes oil pump chamber 1030, and oil pump component 100 is mounted in oil pump chamber 1030, oil pump chamber 1030 It is connected with the oil discharge outlet of oil pump component 100, and oil pump chamber 1030 is connected to total oil outlet 1020.

Thus it is possible, on the one hand, the periphery of oil pump component 100 is wrapped up by high pressure oil, the vibrating noise of oil pump component 100 can be by High pressure oil in oil pump chamber 1030 is absorbed and is reflected by the wall surface of oil pump chamber 1030, to reduce the work of electric oil pump assembly 1000 Make noise.

The high-voltage oil liquid of another aspect, oil pump chamber 1030 can apply axial thrust, such as high pressure to oil pump component 100 The front end that the pressure that oil applies the back shroud 120 of oil pump component 100 can make oil pump component 100 be supported on electric machine assembly 200 On lid 210, such oil pump component 100 in the process of running can be by additional axial force, and oil pump component 100 was being run It can keep relative stability and fix in journey.

It can be pre-positioned by positioning unit 322 between oil pump component 100 and drive end bearing bracket 210, and positioning unit 322 and oil At least one of pump assembly 100 and drive end bearing bracket 210 radially clearance fit, the back shroud 120 and oil pump chamber of oil pump component 100 1030 roof 1031 is respectively equipped with the opposite magnetic part 321 of pole orientation.

For example, positioning unit 322 can be with the front shroud 110 of oil pump component 100 radially clearance fit, positioning unit 322 can be embedded in drive end bearing bracket 210；Or positioning unit 322 can be with the radially clearance fit of drive end bearing bracket 210, positioning unit 322 The front shroud 110 of oil pump component 100 can be embedded in；Or in the embodiment as shown in Fig. 5, Fig. 7, Fig. 9, Figure 22, Figure 32, positioning Unit 322 can radially clearance fit, positioning unit 322 can be with drive end bearing brackets 210 with the front shroud 110 of oil pump component 100 Radially clearance fit.Positioning unit 322 can be straight pin.

It should be noted that the magnetic part 321 on the back shroud 120 of oil pump component 100 can be embedded in back shroud 120, oil Magnetic part 321 on the roof 1031 of pump chamber 1030 can be embedded in the roof 1031 of oil pump chamber 1030, the magnetism of the two positions The identical magnetic pole of part 321 is oppositely arranged, for example N, extremely to the pole N, S is extremely to the pole S, it is preferable that the magnetic part 321 of the two positions Setting facing each other, certainly, if the back shroud 120 and drive end bearing bracket 210 of oil pump component 100 are that ferrimagnet is made, this The magnetic part 321 of two positions can also be arranged in a staggered manner.

Magnetic part 321 can be multiple, the circumferentially spaced arrangement of multiple magnetic parts 321, it is preferable that magnetic part 321 can Think circumferentially evenly-spaced be arranged between back shroud 120 and the roof 1031 of oil pump chamber 1030.In this way, oil pump component The pre-installation power of 100 all directions in the circumferential is more balanced, when floating radially, the constraint that is subject in all directions It is more balanced.

Embodiment six

It is according to an embodiment of the invention electronic as shown in Figure 10-Figure 12, Figure 24, Figure 25, Figure 34, Figure 35 and Figure 41 Oil pump assy 1000 includes: electric machine assembly 200, oil pump component 100 and buckle 331.

Buckle 331 is connected between oil pump component 100 and electric machine assembly 200, and oil pump component 100 and electric machine assembly 200 In one with 331 clearance fits of buckle, in oil pump component 100 and electric machine assembly 200 another and buckle 331 is fixed connects It connects, so that 100 floating support of oil pump component is in the end of electric machine assembly 200.

For example 100 floating mount of oil pump component, on drive end bearing bracket 210, buckle 331 is connected to oil pump component 100 and drive end bearing bracket One between 210, and in oil pump component 100 and drive end bearing bracket 210 and 331 clearance fits of buckle, oil pump component 100 and drive end bearing bracket Another in 210 is fixedly connected with buckle 331, so that 100 floating support of oil pump component is on drive end bearing bracket 210.

For example, buckle 331 can be fixedly connected with the front shroud 110 of oil pump component 100, before buckling 331 one end insertion Cover board 110,210 clearance fit of drive end bearing bracket of buckle 331 and electric machine assembly 200；Alternatively, buckle 331 can be with electric machine assembly 200 Drive end bearing bracket 210 be fixedly connected, buckle 331 one end insertion drive end bearing bracket 210, buckle 331 and the front shroud of oil pump component 100 110 clearance fits.

100 floating mount of oil pump component is connected to oil pump component 100 and preceding electricity in the end of electric machine assembly 200, buckle 331 One between thermomechanical components 200, and in oil pump component 100 and electric machine assembly 200 and 331 clearance fits of buckle, oil pump component 100 It is fixedly connected with another in electric machine assembly 200 with buckle 331, so that 100 floating support of oil pump component is in electric machine assembly 200 On.

For example buckle 331 is connected between drive end bearing bracket 210 and oil pump component 100, to realize that limit, pre-determined bit and transmitting are turned round The effect of square, wherein limit includes limit axially and radially, it should be noted that limit described herein not necessarily limits Be set to it is stuck, but limit oil pump component 100 in the removable momentum for axially and/or radially having certain amplitude.

Oil pump component 100 is pre-mounted in the drive end bearing bracket 210 of electric machine assembly 200 under the axial limiting effect of buckle 331 On, in assembly without carrying out the locking of bolt large torque on oil pump component 100, pretightning force or pre- limit that buckle 331 provides It only need to guarantee that oil pump component 100 is installed, can reduce the operating friction power of oil pump component 100 in this way, promote oil pump group The work efficiency of part 100, the mechanical efficiency of oil pump component 100 are higher.

It since oil pump component 100 uses floated installation, does not need bolt and is fixed on shell, in the work for applying certain force There can be certain removable momentum radial and axial with lower oil pump component 100, be rotated in the motor shaft 250 of electric machine assembly 200 When, the oil pump shaft 130 of oil pump component 100 can be effectively prevented from adaptively to the heart because of motor shaft 250, shaft coupling 410 and oil pump 130 three's decentraction of axis and bring noise, and due to the characteristic of the heart, can adaptively reduce to processing motor shaft 250, connection The requirement on machining accuracy of axis device 410 and oil pump shaft 130, the processing cost and assembly precision for reducing electric oil pump assembly 1000 need It asks.

Further, the output pulse of oil pump component 100 can overcome the elastic force of buckle 331, send out oil pump component 100 Raw axial displacement, to reduce the output pulse for even being eliminated oil pump component 100.

Electric oil pump assembly 1000 according to an embodiment of the present invention pre-installs oil pump component by setting buckle 331 100, and make 100 floating mount of oil pump component, it can reduce the operating friction power of oil pump component 100, promote oil pump component 100 Work efficiency, reduces the output pulse of oil pump component 100, and electric oil pump assembly 1000 has the characteristic of adaptive centering, can To reduce the machining accuracy and assembly precision demand of electric oil pump assembly 1000.

Electric oil pump assembly 1000 in accordance with a preferred embodiment of the present invention, such as Figure 10-Figure 12, Figure 24, Figure 25, figure 34, it shown in Figure 35 and Figure 41, buckles 331 one end and is fixedly connected with drive end bearing bracket 210, for example the end of buckle 331 can be embedded in Drive end bearing bracket 210, the other end for buckling 331 is equipped with grab 332, the clamping of front shroud 110 of grab 332 and oil pump component 100, and blocks Hook 332 in the axial direction limits front shroud 110.Such as grab 332 at least partly can be in the axial movement of oil pump component 100 It is at least partly overlapped on path with front shroud 110.

Specifically, as shown in figure 41, clamping groove 111 can be equipped on front shroud 110, clamping groove 111 can be annular (circle The annular of annular, side's annular or other shapes) or clamping groove 111 can be the gap in embodiment shown in Figure 41.

Buckle 331 runs through clamping groove 111, and buckles 331 and 111 clearance fit of clamping groove, in this way, oil pump component 100 can To float radially, i.e., there is certain removable momentum radially, when the motor shaft 250 of electric machine assembly 200 rotates, oil The oil pump shaft 130 of pump assembly 100 can be effectively prevented from adaptively to the heart because of motor shaft 250, shaft coupling 410 and oil pump shaft 130 Three's decentraction and bring noise.

110 clearance fit of front shroud of the end face and oil pump component 100 towards drive end bearing bracket 210 of grab 332, such oil pump Component 100 has small amount of floating in the axial direction, and oil pump component 100 is not stuck in the axial direction, does not interfere oil pump component 100 Radial floating can reduce oil pump component 100 and since the installation pressure between oil pump component 100 and electric machine assembly 200 is small Operating friction power, promote the work efficiency of oil pump component 100, the mechanical efficiency of oil pump component 100 is higher.

The edge of front shroud 110 has the lug 112 radially protruded, and clamping groove 111 is located on lug 112, blocks Access slot 111 can be the closed annular on lug 112, can also set gap on lug 112 to be formed, the direction of grab 332 The end face of drive end bearing bracket 210 and the surface away from drive end bearing bracket 210 of lug 112 are oppositely arranged, and grab 332 has guide surface 333, are led Radial direction to face 333 along front shroud 110 is tilted to the direction far from drive end bearing bracket 210 from inside to outside, and guide surface 333 can be oblique Face.

Buckle 331 can be generally rod-shaped, in this way, preferably, buckle 331 can be plastics to elasticity to buckle 331 radially Part or metal with certain elasticity are made.

As shown in figure 41, when installing oil pump component 100, the edge and grab towards drive end bearing bracket 210 of clamping groove 111 Guide surface 333 on 332 acts on, and 331 generation flexible deformation of buckle is bent outwardly, and clamping groove 111 crosses the barb of buckle 331 Afterwards, 331 rebound of buckle, the front shroud 110 of oil pump component 100 are limited by grab 332, and oil pump component 100 is relatively fixed, and at this time Buckle 331 is clearance fit with clamping groove 111, and oil pump component 100 has a certain amount of mobile space radial and axial, certain External force under oil pump component 100 can have certain amount of movement radial and axial.

As shown in figure 41, buckle 331 can be multiple, lug 112 be also it is multiple, multiple lugs 112 are circumferentially spaced Arrangement, 331 circumferentially spaced arrangements of multiple buckles, it is preferable that lug 112 can circumferentially evenly-spaced arrangement, it is multiple Buckle 331, multiple lugs 112 correspond.In this way, the pre-installation power of all directions of oil pump component 100 in the circumferential is more Equilibrium, and oil pump component 100 when floating in the axial direction respectively to consistent, when floating radially, the constraint that is subject in all directions Also more balanced.

Embodiment seven

As shown in Figure 13-Figure 18, Figure 26-Figure 28, Figure 36-Figure 38, electric oil pump according to an embodiment of the invention is total It include: electric machine assembly 200 and oil pump component 100 at 1000.

Electric machine assembly 200 has oil pump chamber 1030, and electric machine assembly 200 includes drive end bearing bracket 210, and drive end bearing bracket 210 can be used for Oil outlet pump chamber 1030 is limited, is filled with oil liquid in oil pump chamber 1030, oil pump chamber 1030 is not merely limited by drive end bearing bracket 210, preceding End cap 210 can only limit the part wall of oil pump chamber 1030.

Oil pump component 100 is fixedly connected with electric machine assembly 200, for example oil pump component 100 can be with electric machine assembly 200 Drive end bearing bracket 210 is fixedly connected, and oil pump component 100 is located in oil pump chamber 1030, the inlet port of oil pump component 100 and total oil inlet 1010 connections, the oil discharge outlet of oil pump component 100 are connected to total oil outlet 1020.

The periphery of electric oil pump assembly 1000 according to an embodiment of the present invention, oil pump component 100 is wrapped up by oil liquid, oil pump group The vibrating noise of part 100 can be absorbed by the oil liquid in oil pump chamber 1030 and be reflected by the wall surface of oil pump chamber 1030, to reduce The operating noise of electric oil pump assembly 1000.

Further, as shown in Figure 13-Figure 16, Figure 26-Figure 28, Figure 36-Figure 38, electric machine assembly 200 can also have liquid Cold chamber 260, liquid cooling chamber 260 are connected to total oil inlet 1010, and liquid cooling chamber 260 can be indoor vacant for the cabin of electric machine assembly 200 Space, oil liquid flow into liquid cooling chamber 260 by total oil inlet 1010, and oil liquid is filled in liquid cooling chamber 260, are equivalent to electric machine assembly Components (such as stator 241, rotor 242 etc.) inside 200 are immersed in oil liquid.

The inlet port of oil pump component 100 is connected to liquid cooling chamber 260, the oil discharge outlet of oil pump component 100 and total oil outlet 1020 Connection.

That is, the flow path of oil liquid are as follows: the inlet port-of total oil inlet 1010- liquid cooling chamber 260- oil pump component 100 Low pressure oil, can be changed into high pressure oil, and the oil circulated by the total oil outlet 1020 of the oil discharge outlet-of oil pump component 100 in this way Liquid can take away the heat of electric machine assembly 200, guarantee 200 the operation is stable of electric machine assembly, electric machine assembly 200 need not be separately provided scattered Hot cell, can reduce the volume and weight of electric oil pump assembly 1000, and the formation circulated is simple, easily fabricated.

Electric oil pump assembly 1000 according to an embodiment of the present invention, by the way that the liquid cooling chamber being connected to oil pump component 100 is arranged 260 realize the oil suction of oil pump component 100 and the heat dissipation of electric machine assembly 200, help to promote dissipating for electric oil pump assembly 1000 Hot property and job stability, and integrated level is high, lightweight is horizontal high.

In a specific embodiment, as shown in Figure 13-Figure 18, Figure 26-Figure 28, Figure 36-Figure 38, oil pump component 100 Part 341 can be connected through a screw thread with drive end bearing bracket 210 to be fixedly connected.For example, the edge of the front shroud 110 of oil pump component 100 has There is the lug 112 radially protruded, threaded connector 341 is threadedly coupled through lug 112 and with drive end bearing bracket 210.

In this way, oil pump component 100 and electric machine assembly 200 are connected firmly, conveniently, and the frictional force that bolt is tightened can be steady Surely torque is transmitted.

As shown in figure 41, bolt can be multiple, and lug 112 is also multiple, the circumferentially spaced cloth of multiple lugs 112 Set, multiple circumferentially spaced arrangements of bolt, it is preferable that lug 112 can circumferentially evenly-spaced arrangement, multiple bolts, Multiple lugs 112 correspond.In this way, the installing force of all directions of oil pump component 100 in the circumferential is more balanced, torque It transmits also more stable.

Further, oil pump component 100 can be positioned with drive end bearing bracket 210 by location structure (not shown).Positioning Structure is used to guarantee the concentricity of the oil pump shaft 130 of oil pump component 100 and the motor shaft 250 of electric machine assembly 200.

In some alternative embodiments, location structure can be positioning pin, and the both ends of positioning pin are respectively protruding into oil pump group Locating slot on the front shroud 110 and drive end bearing bracket 210 of part 100.

In other optional embodiments, the positioning convex platform that location structure can protrude for the past end cap 210, oil pump group The front shroud 110 of part 100 is equipped with positioning groove, and positioning convex platform protrudes into positioning convex platform to realize the positioning of oil pump component 100.

In other optional embodiment, location structure can be to determine from what the front shroud 110 of oil pump component 100 protruded The drive end bearing bracket 210 of position boss, electric machine assembly 200 can be equipped with positioning groove, and positioning convex platform protrudes into positioning convex platform to realize oil pump The positioning of component 100.

It should be noted that above-described embodiment one, embodiment two, embodiment three, example IV, embodiment five, embodiment Six, embodiment seven can also further form new embodiment in conjunction with following characteristics.

As shown in Fig. 1-Figure 38, total oil inlet 1010 can be located on drive end bearing bracket 210, and specifically, total oil inlet 1010 can To be located at the top of drive end bearing bracket 210, total oil inlet 1010 can be located at the highest point of entire electric oil pump assembly 1000, work as oil liquid When inflow, the residual gas in electric oil pump assembly 1000 can swimmingly be discharged upwards, have in electric oil pump assembly 1000 In some embodiments of liquid cooling chamber 260, total oil inlet 1010 can be connected to circulation oil duct 262.

As shown in Fig. 1-Figure 38, electric oil pump assembly 1000 be can have: oil pump chamber 1030, oil pump component 100 are mounted on In oil pump chamber 1030, oil liquid is filled in oil pump chamber 1030.

There are many molding modes of oil pump chamber 1030, for example can set an independent staving, and staving limits oil outlet pump chamber 1030, the staving be fixedly connected with the drive end bearing bracket 210 of electric machine assembly 200 or the part peripheral wall of oil pump chamber 1030 can with it is preceding End cap 210 is integrally formed, to reduce the assembly process of electric oil pump assembly 1000.

For example, drive end bearing bracket 210, which can have, to be prolonged along axial direction to the direction far from electric machine assembly 200 as shown in Fig. 1-Figure 38 The annular convex platform 213 stretched, annular convex platform 213 can form the side wall of oil pump chamber 1030, and the side wall of oil pump chamber 1030 can be two Hold open barrel-shaped, the side wall ring of oil pump chamber 1030 is around oil pump component 100, the side wall of drive end bearing bracket 210 itself and oil pump chamber 1030 One end be connected to form the bottom wall of oil pump chamber 1030, the roof 1031 and annular convex platform 213 of oil pump chamber 1030 can pass through spiral shell Line fastener is connected, to close the other end of oil pump chamber 1030.In this way, oil pump component 100 is easy for installation.

As shown in Fig. 1-Figure 38, it can be folded with sealing ring between oil pump component 100 and drive end bearing bracket 210, sealing ring can be with It is rubber ring etc., sealing ring can prevent the oil liquid leakage of oil pump chamber 1030, and make the cabin of oil pump chamber 1030 Yu electric machine assembly 200 Room partition.

It should be noted that bottom wall described herein, roof are not limited to up and down direction, but from oil pump component 100 Angle of assembling for, the wall surface of support oil pump component 100 is bottom wall, and the wall surface opposite with bottom wall is roof, such as Fig. 1-figure In embodiment shown in 38, electric oil pump assembly 1000 is horizontal, and electric machine assembly 200 and oil pump component 100 are horizontal, oil pump in figure The left side wall surface of component 100 is bottom wall, and right side wall surface is roof.

Drive end bearing bracket 210 and annular convex platform 213 can be articles made of aluminium alloy, to mitigate the gross weight of electric oil pump assembly 1000 Amount, the roof 1031 of oil pump chamber 1030 can be steelwork, can be by oil pump chamber 1030 in this way under the requirement for meeting intensity Roof 1031 is made relatively thin, so that the axial space of electric oil pump assembly 1000 is more compact.

In some alternative embodiments, as shown in Figure 14, Figure 16, Figure 18, Figure 27, Figure 37, oil pump chamber 1030 can be with Total oil inlet 1010 is connected to, and the inlet port of oil pump component 100 can be connected with oil pump chamber 1030, and drive end bearing bracket 210 is equipped with fuel-displaced logical The one end in road 212, oil discharge passage 212 is connected with the oil discharge outlet of oil pump component 100, and the other end of oil discharge passage 212, which is formed, always to be gone out Hydraulic fluid port 1020.

Such as in the embodiment shown in Figure 14 and Figure 16, the import of oil pump chamber and oil pump can be equipped on annular convex platform 213 Chamber outlet, oil liquid enter oil pump chamber 1030 from oil pump chamber import, and the liquid cooling chamber of electric machine assembly 200 is flowed out to from the outlet of oil pump chamber In 260, then oil pump component 100 sucked by inlet port, oil pump component 100 by oil liquid from low pressure be converted to high pressure after from oil discharge outlet Place passes through 212 row of oil discharge passage to total oil outlet 1020.

That is, the flow direction of oil liquid are as follows: total oil inlet 1010- oil pump chamber 1030- liquid cooling chamber 260- oil pump component 100 inlet port-oil pump component 100 oil discharge outlet-total the oil outlet 1020 of oil discharge passage 212-, in this way can change low pressure oil For high pressure oil, and the oil liquid circulated can take away the heat of electric machine assembly 200, guarantee 200 the operation is stable of electric machine assembly, electricity Heat-sink unit need not be separately provided in thermomechanical components 200, can reduce the volume and weight of electric oil pump assembly 1000.

Since the oil liquid filled in oil pump chamber 1030 is low pressure oil, the pressure of oil pump chamber 1030 is small, convenient for sealing, oil pump chamber The effect of high-pressure bottle is not present in 1030 wall surface, it is not necessary to a possibility that being limited to the influence of intensity, providing light-weight design, The wall surface of oil pump chamber 1030 can be set relatively thin, for example the wall surface of oil pump chamber 1030 can be made of thin-wall metal, to reduce The occupied space and weight of electric oil pump assembly 1000.

It should be noted that preferably, in the embodiment that low pressure oil is filled in oil pump chamber 1030, oil pump component 100 Shell is fixedly connected with electric machine assembly 200, for example can be fixedly connected by bolted mode described in embodiment seven.

In other optional embodiments, such as Fig. 1-Figure 13, Figure 15, Figure 17, Figure 19-Figure 26, Figure 28-Figure 36 and Figure 38 Shown, oil pump chamber 1030 is connected with the oil discharge outlet of oil pump component 100, and oil pump chamber 1030 is connected to total oil outlet 1020, front end Lid 210 can be equipped with oil discharge passage 212, and one end of oil discharge passage 212 be connected with oil pump chamber 1030, oil discharge passage 212 it is another End forms total oil outlet 1020.

The flow path of oil liquid are as follows: inlet port-oil pump component 100 oil extraction of total oil inlet 1010- oil pump component 100 The total oil outlet 1020 of mouth-oil pump chamber 1030- oil discharge passage 212-, can be changed into high pressure oil for low pressure oil in this way.

Wherein, Fig. 1, Fig. 4, Fig. 5, Figure 10, Figure 13, Figure 19, Figure 20, Figure 21, Figure 24, Figure 26, Figure 29, Figure 31, Figure 32, In embodiment shown in Figure 34, Figure 36, liquid cooling chamber 260 and motor shafting oil can be passed through between total oil inlet 1010 and inlet port Road 251 is connected to.

Implement shown in Fig. 2, Fig. 6, Fig. 7, Figure 11, Figure 15, Figure 23, Figure 25, Figure 28, Figure 30, Figure 33, Figure 35, Figure 38 In example, it can be connected to by liquid cooling chamber 260 between total oil inlet 1010 and inlet port.

In the embodiment shown in Fig. 3, Fig. 8, Fig. 9, Figure 12, Figure 17, it can lead between total oil inlet 1010 and inlet port The oil inlet passage 215 crossed on drive end bearing bracket 210 is connected to.

On the one hand, oil pump chamber 1030 can play the role of eliminating oil liquid pulsation and carry out fluid noise reduction, pass through design oil The elimination to various frequency noises may be implemented in the size of pump chamber 1030.

On the other hand, the high-voltage oil liquid of oil pump chamber 1030 can apply axial thrust P to oil pump component 100, such as high Before pressure oil can make oil pump component 100 be supported on electric machine assembly 200 the pressure P that the back shroud 120 of oil pump component 100 applies On end cap 210, such oil pump component 100 in the process of running can be by additional axial force, and oil pump component 100 is being run It can keep relative stability and fix in the process.

It should be noted that preferably, in oil pump 100 floating mount of component, oil pump chamber 1030 and oil pump component 100 Oil discharge outlet connection.

The embodiment as shown in Figure 29-Figure 38, electric oil pump assembly 1000 can also include: blimp 510, blimp 510 can be located at outside the outside wall surface of oil pump chamber 1030, for example blimp 510 is coated on outside the outside wall surface of oil pump chamber 1030, with Further completely cut off the operating noise of oil pump component 100.

Blimp 510 can be used acoustic material and be made, and can targetedly select phase according to the frequency spectrum characteristic of noise The acoustic material of frequency spectrum is answered, noise is reduced, optionally, blimp 510 can be nylon part, such as metal-nylon composite material system At metal-nylon composite material is the composite material of addition metal mesh in nylon base, the inner surface of metal-nylon composite material Smooth, intermediate porous helps to reflect and absorb noise, and pore size and ratio can be selected according to frequency spectrum characteristic.

The embodiment as shown in Fig. 1-Figure 18, electric oil pump assembly 1000 can also include: low-pressure cover 520, low-pressure cover 520 It can be located at outside the wall surface of oil pump chamber 1030, and limit the low pressure chamber 1040 being connected to total oil inlet 1010, low-pressure cover 520 It is connected with drive end bearing bracket 210, for example low-pressure cover 520 can be clamped with drive end bearing bracket 210 and be connected.

In low pressure chamber 1040 can be filled with low pressure oil, further to absorb the operating noise of oil pump component 100, always into Hydraulic fluid port 1010 can be connected directly with low pressure chamber 1040, and the oil liquid in liquid cooling chamber 260 or oil inlet passage 215 can pass through low pressure chamber 1040 are connected with total oil inlet 1010.

Low-pressure cover 520 can smooth by inner surface, intermediate porose material be made, in this way, low-pressure cover 520 is to the anti-of noise Penetrate that ability is strong, good absorption effect.In some specific embodiments, low-pressure cover 520 can be compound for plastic part or metal-nylon Material is made, and metal-nylon composite material is the composite material of addition metal mesh in nylon base.

Low-pressure cover 520 can have taper peripheral wall, and low-pressure cover 520 is transversely mounted, and the internal diameter of low-pressure cover 520 is from close to total Oil inlet 1010 gradually becomes smaller to the direction far from total oil inlet 1010, and the residual gas in such low pressure chamber 1040 can be along cone Surface current is discharged to total oil inlet 1010, and the remnants in low-pressure cover 520 can thoroughly be discharged when electric oil pump assembly 1000 is run Gas.

In the embodiment shown in Fig. 1-Figure 38, electric machine assembly 200 and oil pump component 100 are horizontal.Oil can be eliminated in this way Influence of the self weight of pump assembly 100 to the assembling pressure between oil pump component 100 and electric machine assembly 200, and electric oil pump assembly 1000 height is small, convenient for arranging on vehicle.

As shown in Fig. 1-Figure 38, the oil pump shaft 130 of oil pump component 100 can pass through with the motor shaft 250 of electric machine assembly 200 The connection of 410 power coupling of shaft coupling, for transmitting torque, i.e. motor shaft 250 can be driven shaft coupling 410 by shaft coupling 410 Oil pump shaft 130 rotates, and there are many structure types, such as oldham coupling, hinged shaft coupling, gear coupling etc. for shaft coupling 410.

In a preferred embodiment, as shown in figure 42, shaft coupling 410 has connection holes 411, and motor shaft 250 has First key, oil pump shaft 130 have the second key, and the first key and connection holes 411 cooperate, and the second key and connection holes 411 cooperate, and first Key and the second key have superposition section in the axial direction.

That is, connection holes 411 may include two parts mutually staggering with respectively with motor shaft 250, oil pump shaft 130 cooperations, the length after motor shaft 250, shaft coupling 410,130 three of oil pump shaft cooperation are less than motor shaft 250 and oil pump shaft 130 The sum of length, the axial length of such shaft coupling 410 is short, and the axial length of shaft coupling 410 can shorten half, so that electronic oil The axial space of pump assembly 1000 is more compact.

Specifically, connection holes 411 can be for through " ten " the font hole of shaft coupling 410, shaft coupling 410 can be cylinder Shape, connection holes 411 can be provided with the middle of shaft coupling 410 along axial direction.First key and the second key can be linear type, Linear type herein includes continuous strip, also includes intermittent strip, and at least one of the first key and second key Middle part has escape groove.

In this way, axial overlap may be implemented without interfering in the first key and the second key, torque is from the first key of motor shaft 250 Side passes to shaft coupling 410, and shaft coupling 410 transfers a torque to the side of the second key of oil pump shaft 130 again.Due to motor shaft 250 or the torsional shear when transmitting torque of oil pump shaft 130 be from axis surface to center gradient reduce, be zero at center, institute It is smaller to the intensity effect of key to set escape groove in the middle part of key.

Selection can be selected, if the diameter of oil pump shaft 130 is less than when which key opens up escape groove according to the diameter of axis The diameter of motor shaft 250, then the middle part of the first key has escape groove；If the diameter of oil pump shaft 130 is greater than the straight of motor shaft 250 Diameter, then the middle part of the second key has escape groove.In this way, the influence for opening up escape groove to the intensity of axis can be reduced further. Certainly, in a specific embodiment, as shown in figure 42, the middle part of the first key and the second key can offer escape groove, To prevent motor shaft 250 or oil pump shaft 130 from directly contacting.

In the description of this specification, particular features, structures, materials, or characteristics described can at any one or It can be combined in any suitable manner in multiple embodiment or examples, for example the multiple mounting modes of oil pump component 100 (including pass through elasticity 311 floating mount of part, by 331 floating mounts of buckle, by 321 floating mount of magnetic part, to be connected through a screw thread part 341 fixed Installation), a variety of types of cooling of electric machine assembly 200 or transportation oil (including by 251 oil transportation of motor slinger, pass through liquid cooling 260 oil transportation of chamber, isolation cooling) it can be combined with each other to obtain new embodiment.

For example, the feature of embodiment one and example IV combines the available implementation as shown in Fig. 1, Figure 19, Figure 29 Example.

The feature of embodiment one and embodiment five combines available such as Fig. 4, Fig. 5, Figure 21, Figure 22, Figure 31, Tu32Suo The embodiment shown.

The feature of embodiment one and embodiment six combines the available embodiment as shown in Figure 10, Figure 24, Figure 34.

The feature of embodiment one and embodiment seven combines available such as Figure 13, Figure 14, Figure 26, Figure 27, Figure 36, Figure 37 Shown in embodiment.

The feature of embodiment two and example IV combines the available embodiment as shown in Fig. 2, Figure 20, Figure 30.

The feature of embodiment two and embodiment five combines the available implementation as shown in Fig. 6, Fig. 7, Figure 23, Figure 33 Example.

The feature of embodiment two and embodiment six combines the available embodiment as shown in Figure 11, Figure 25, Figure 35.

The feature of embodiment two and embodiment seven combines the available implementation as shown in Figure 15, Figure 16, Figure 28, Figure 38 Example.

The feature of embodiment three and example IV combines available embodiment as shown in Figure 3.

The feature of embodiment three and embodiment five combines available embodiment as shown in Figure 8, Figure 9.

The feature of embodiment three and embodiment six combines available embodiment as shown in figure 12.

In the embodiment shown in fig. 12, the electric machine assembly 200 of electric oil pump assembly 1000 has oil pump chamber 1030, motor The drive end bearing bracket 210 of component 200 limits oil outlet pump chamber 1030, and oil pump chamber 1030 is not merely limited by drive end bearing bracket 210, drive end bearing bracket 210 can only limit the part wall of oil pump chamber 1030, and the cabin of electric machine assembly 200 and oil pump chamber 1030 separate, electric machine assembly 200 cabin and oil pump chamber 1030 are separated by the drive end bearing bracket 210 of electric machine assembly 200.Electric machine assembly 200 can be liquid-cooled The oil liquid of (oil injection type), the cooling oil and oil pump component 100 of electric machine assembly 200 separates, for example electric machine assembly 200 can have There is liquid cooling chamber 260, liquid cooling chamber 260 is isolated with oil pump component 100, and specifically, liquid cooling chamber 260 can pass through with oil pump component 100 Drive end bearing bracket 210 is isolated.

The oil pump chamber 1030 of an alternative embodiment is connected to total oil inlet 1010 according to the present invention, as shown in figure 12, oil Pump chamber 1030 is connected with the oil discharge outlet of oil pump component 100, and oil pump chamber 1030 is connected to total oil outlet 1020, oil pump component 100 Oil discharge outlet can be connected to by oil pump chamber 1030 with total oil outlet 1020, the inlet port of oil pump component 100 and total oil inlet 1010 connections.

Other the relevant technologies features of buckle 331 are referred to the description of embodiment six, and details are not described herein.

Electric oil pump assembly 1000 according to an embodiment of the present invention pre-installs oil pump component by setting buckle 331 100, relatively independent oil pump chamber 1030 is set, and the pump oil of oil pump component 100 not will receive the flowing of the oil liquid in electric machine assembly 200 Interference, can reduce the operating friction power of oil pump component 100, promote the work efficiency of oil pump component 100, reduce oil pump component 100 output pulse promotes the heat dissipation performance and job stability of electric oil pump assembly 1000, and integrated level is high, lightweight water Flat height, and electric oil pump assembly 1000 has the characteristic of adaptive centering, can reduce the processing essence of electric oil pump assembly 1000 Degree and assembly precision demand.

The feature of embodiment three and embodiment seven combines the available embodiment as shown in Figure 17, Figure 18.

The invention also discloses a kind of steering systems 1, and as shown in figure 43, the steering system 1 of the embodiment of the present invention has upper The electric oil pump assembly 1000 of any embodiment description is stated, for example the oil liquid that electric oil pump assembly 1000 exports can be by turning It realizes and turns to the driving transverse bar displacement of the piston push rod of power cylinder, in this way, the structure of the steering system 1 of the embodiment of the present invention is tight It gathers, steering manipulation is good, good operating stability.

The invention also discloses a kind of lubricating systems 2, and as shown in figure 44, the lubricating system 2 of the embodiment of the present invention has upper The electric oil pump assembly 1000 of any embodiment description is stated, for example lubricating oil can be pumped by electric oil pump assembly 1000 In the system for needing to lubricate, in this way, compact-sized, the good operating stability of the lubricating system 2 of the embodiment of the present invention.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term Schematic representation may not refer to the same embodiment or example.

Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this The range of invention is defined by the claims and their equivalents.

Claims

1. a kind of electric oil pump assembly, which is characterized in that the electric oil pump assembly has total oil inlet and total oil outlet, and wraps It includes:

Electric machine assembly, the end of the electric machine assembly have oil pump chamber, and the cabin of the electric machine assembly and the oil pump chamber separate, The oil pump chamber is connected to total oil outlet；

Oil pump component, it is intracavitary that the oil pump component is located at the oil pump, and connects with the motor shaft power coupling of the electric machine assembly It connects, the inlet port of the oil pump component is connected to total oil inlet, and oil discharge outlet is connected to the oil pump chamber；

Buckle, it is described to snap connection between the oil pump component and the electric machine assembly, and with the oil pump component and described A clearance fit in electric machine assembly, so that the oil pump component floating support is in the end of the electric machine assembly.

2. electric oil pump assembly according to claim 1, which is characterized in that the oil pump component floating support is in the electricity On the drive end bearing bracket of thermomechanical components, one end of the buckle is fixedly connected with the drive end bearing bracket, and the other end is equipped with and the oil pump component Front shroud clamping grab, and the grab in the axial direction to the front shroud limit.

3. electric oil pump assembly according to claim 2, which is characterized in that the front shroud is equipped with clamping groove, described Buckle through the clamping groove and with the clamping groove clearance fit, the end face towards the drive end bearing bracket of the grab with it is described Front shroud clearance fit.

4. electric oil pump assembly according to claim 3, which is characterized in that the edge of the front shroud have radially to The lug of outer protrusion, the clamping groove are located on the lug, the end face towards the drive end bearing bracket of the grab with it is described convex The surface away from the drive end bearing bracket of ear is oppositely arranged.

5. electric oil pump assembly according to claim 2, which is characterized in that the grab has guide surface, the guiding Face is tilted to the direction far from the drive end bearing bracket from inside to outside along the radial direction of the front shroud.

6. electric oil pump assembly according to claim 2, which is characterized in that the buckle is multiple, multiple buckles Circumferentially spaced arrangement.

7. electric oil pump assembly according to claim 1, which is characterized in that the buckle is plastic part.

8. electric oil pump assembly according to claim 1, which is characterized in that the drive end bearing bracket of the electric machine assembly limits institute Oil pump chamber is stated, total oil inlet is located on the drive end bearing bracket.

9. electric oil pump assembly according to claim 8, which is characterized in that total oil inlet is located at the drive end bearing bracket Top.

10. electric oil pump assembly according to claim 1, which is characterized in that the drive end bearing bracket of the electric machine assembly limits The oil pump chamber, the drive end bearing bracket have the annular convex platform extended along axial direction to the direction far from the electric machine assembly, the ring Shape boss forms the side wall of the oil pump chamber, and the roof of the oil pump chamber is connected with the annular convex platform by threaded fastener.

11. electric oil pump assembly according to claim 1, which is characterized in that further include: blimp, the blimp cover It is located at outside the outside wall surface of the oil pump chamber.

12. electric oil pump assembly according to claim 1, which is characterized in that further include: low-pressure cover, the low-pressure cover cover It is located at outside the wall surface of the oil pump chamber and limits the low pressure chamber being connected to total oil inlet, the drive end bearing bracket of the electric machine assembly The oil pump chamber is limited, the low-pressure cover is connected with the drive end bearing bracket.

13. electric oil pump assembly according to claim 12, which is characterized in that the low-pressure cover has taper peripheral wall, and Direction of the internal diameter of the low-pressure cover from close to total oil inlet to far from total oil inlet gradually becomes smaller.

14. electric oil pump assembly according to claim 1, which is characterized in that the electric machine assembly and the oil pump component It is horizontal.

15. electric oil pump assembly according to claim 1, which is characterized in that the oil pump component floating support is described On the drive end bearing bracket of electric machine assembly, sealing ring is folded between the oil pump component and the drive end bearing bracket.

16. electric oil pump assembly described in any one of -15 according to claim 1, which is characterized in that before the electric machine assembly End cap limits the oil pump chamber, and on the drive end bearing bracket, the drive end bearing bracket is equipped with fuel-displaced logical the oil pump component floating support Road and oil inlet passage, one end of the oil discharge passage are connected with the oil pump chamber, and the other end forms total oil outlet, it is described into The one end in oily channel is connected to total oil inlet, and the other end is connected with the inlet port.

17. a kind of steering system, which is characterized in that have the electric oil pump assembly as described in any one of claim 1-16.

18. a kind of lubricating system, which is characterized in that have the electric oil pump assembly as described in any one of claim 1-16.