CN111608907A - Modularization gearbox electric oil pump - Google Patents
Modularization gearbox electric oil pump Download PDFInfo
- Publication number
- CN111608907A CN111608907A CN202010404496.4A CN202010404496A CN111608907A CN 111608907 A CN111608907 A CN 111608907A CN 202010404496 A CN202010404496 A CN 202010404496A CN 111608907 A CN111608907 A CN 111608907A
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- oil pump
- filtering
- rotor
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- 238000001914 filtration Methods 0.000 claims abstract description 80
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 238000013016 damping Methods 0.000 claims description 23
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- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000013461 design Methods 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 230000009931 harmful effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/016—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements with corrugated, folded or wound filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/008—Enclosed motor pump units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Power Engineering (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to the technical field of automobile structures, in particular to a modularized gearbox electric oil pump. The device comprises a filtering module, an oil pump module, a motor module and a control module which are integrated into a whole; the control module is electrically connected with the motor module; the motor module is connected with the oil pump module and is used for driving the oil pump module to operate; the oil inlet of the oil pump module is communicated with the oil outlet of the filtering module; the filter module comprises a first coarse filter structure and a second fine filter structure which are sequentially arranged along the oil flowing direction, and a one-way channel structure which allows oil to directly flow out of an oil outlet of the filter module after passing through the first filter structure when the flow resistance of the second filter structure is greater than the set pressure due to blockage is arranged in the filter module. The invention has simple structure and high integration level, is convenient to mount and dismount to a great extent, optimizes the spatial arrangement in the shell of the gearbox, and has great popularization and application values.
Description
Technical Field
The invention relates to the technical field of automobile structures, in particular to a modularized gearbox electric oil pump.
Background
The hybrid power transmission system is more and more widely applied to an electric oil pump in application occasions of various automatic transmissions and new energy hybrid transmissions, can provide an oil pressure control source for clutches or hydraulic parking mechanisms in a hydraulic system, can also provide active cooling flow for heat dissipation of a wet clutch friction plate or heat dissipation of a high-power generator/driving motor in the hybrid transmission, and can also provide an active lubricating function for bearings and the like which are difficult to contact transmission oil in a splashing mode by means of conventional methods in the transmission.
In hydraulic and cooling applications in a gearbox, a hydraulic actuating mechanism such as a clutch and a hydraulic parking mechanism usually comprises a hydraulic piston cylinder, and a sealing function is provided between the piston and a cylinder body by virtue of a rubber sealing ring, so that the requirement on the cleanliness of working oil is high; in addition, in the heat dissipation occasion of the wet clutch friction plate, the paper-based friction material of the friction plate can be failed in a short period due to impurity particles in the cooling oil, the impurities in the cooling oil can be attached to the surface of the air gap between the stator and the rotor of the generator/driving motor, the performance of the motor is greatly influenced, and the early abrasion between the friction pair of the bearing can be caused due to the oil impurities, so that the stability of the running of the shaft teeth in the bearing and the transmission is influenced. Therefore, the working oil is required to have higher cleanliness in all the occasions, and the common design scheme is to separately design the electric oil pump and the filter and mount the electric oil pump and the filter into the gearbox shell as two parts, so that a mounting interface of the two parts is required to be arranged in the gearbox, a complex shell oil passage is required to be processed between the filter and the oil pump, and the design integration level is not improved.
In addition, in a conventional design scheme of the electric oil pump, after a product of the electric oil pump assembly is designed, only specific working parameters can be provided: such as motor power, oil pump discharge capacity, rotational speed scope etc. specific operating parameter is unfavorable for using widely in the gearbox application environment of difference, if will satisfy a plurality of application scenario, then whole electric oil pump assembly need whole redesign, is unfavorable for the cost management and control. Therefore, there is a need for an electric oil pump solution that can be modular to reduce development and manufacturing costs.
Disclosure of Invention
The invention aims to solve the technical problems mentioned in the background technology and provide a modular gearbox electric oil pump.
The technical scheme of the invention is as follows: a modularization gearbox electric oil pump which characterized in that: the device comprises a filtering module, an oil pump module, a motor module and a control module which are integrated into a whole; the control module is electrically connected with the motor module; the motor module is connected with the oil pump module and is used for driving the oil pump module to operate; the oil inlet of the oil pump module is communicated with the oil outlet of the filtering module; the filter module comprises a first coarse filter structure and a second fine filter structure which are sequentially arranged along the oil flowing direction, and a one-way channel structure which allows oil to directly flow out of an oil outlet of the filter module after passing through the first filter structure when the flow resistance of the second filter structure is greater than the set pressure due to blockage is arranged in the filter module.
The one-way passage structure further comprises a baffle plate, wherein one end of an inlet of the baffle plate extends to a position between the first filtering structure and the second filtering structure, and one end of an outlet of the baffle plate is positioned behind the second filtering structure; and a valve structure which opens the oil passing hole when the oil pressure is greater than the design pressure and closes the oil passing hole when the oil pressure is not greater than the design pressure is arranged in the oil passing hole.
The valve structure further comprises a baffle plate arranged on one side of the flow passage outlet; the baffle is provided with a spring extending along the flowing direction of the oil; one end of the spring is fixed on the baffle, and the other end of the spring is provided with a steel ball which blocks the oil passing hole when the oil pressure flowing through the flow passage is less than the pressure of the spring.
The filter further comprises a supporting plate for connecting the oil pump module and the filter module; one end of the supporting plate is hermetically connected with the filtering cover plate of the filtering module, the other end of the supporting plate is hermetically connected with the middle plate of the oil pump module, and an oil inlet channel and an oil outlet channel are arranged in the supporting plate; one end of the oil inlet channel enters the filtering module, and the other end of the oil inlet channel is communicated with the oil pump module; and one end of the oil outlet channel is communicated with the oil pump module.
And the other end of the oil outlet channel is provided with a damping structure for attenuating the fluctuation of the output oil pressure of the oil pump module.
The damping structure further comprises a damping adjusting ring arranged on the inner side of the oil outlet channel; an annular groove for accommodating the damping adjusting ring is formed in the inner side of the oil outlet channel; the damping adjusting ring is an elastic annular structure which is clamped in the annular groove and can deform along with the change of oil pressure.
The oil pump module further comprises a middle plate provided with a rotor mounting groove; an inner rotor and an outer rotor sleeved outside the inner rotor are arranged in a rotor mounting groove of the middle plate, and a gap for oil liquid to flow is formed between the inner rotor and the outer rotor; the bottom of the middle plate is provided with an oil inlet and an oil outlet which are communicated with the gap; the oil inlet hole and the oil outlet hole are respectively communicated with the oil inlet channel and the oil outlet channel.
And an adjusting structure for adjusting the displacement of the oil pump is arranged at the bottom of the rotor mounting groove.
The adjusting structure further comprises an adjusting plate placed in the rotor mounting groove; the adjusting plate is provided with an oil suction port and an oil outlet which are respectively communicated with the oil inlet hole and the oil outlet hole; the inner rotor and the outer rotor are placed on the adjusting plate, and a gap between the inner rotor and the outer rotor is communicated with the oil suction port and the oil outlet.
The motor module further comprises a motor shell fixed on the middle plate, a driving shaft arranged in the motor shell, rotor magnetic steel arranged on the driving shaft and a stator coil assembly surrounding the outer side of the rotor magnetic steel; the circumferential surface of the rotor magnetic steel is provided with a plurality of clamping grooves which are arranged along the axial direction; a block-shaped permanent magnet is embedded in the clamping groove; and a through hole connected with the end part of the driving shaft is formed in the axis position of the inner rotor.
A plurality of brackets are further arranged between the motor shell and the middle plate; the motor shell is fixed on the bracket; the support is fixed on the middle plate through a bolt structure.
The control module further comprises a motor controller electrically connected with the motor module; and the motor controller is provided with a connector connected with an external power supply.
The first filtering structure is a metal net arranged on the inner side of the filtering cover plate; the second filtering structure is bent wave-shaped filter paper arranged on the inner side of the filtering cover plate.
The invention has the advantages that: 1. the invention integrates the filtering module, the oil pump module, the motor module and the control module together to form an integrated module structure, is convenient to install and arrange, has high integration level of the module structure, simplifies the arrangement structure in the shell of the gearbox, is convenient for the quick assembly of the gearbox, and can effectively improve the purity of oil by integrating two filtering structures to respectively carry out coarse filtering and fine filtering;
2. the one-way passage structure is extremely simple, different oil pressure design requirements can be met by changing the rigidity of the spring, namely when the blockage failure degree of the second filtering structure reaches the design oil pressure, oil passing through the first filtering structure can extrude the steel ball to force the spring to compress so as to open the oil passing hole, the flow of the oil is realized, the structure is simple, and the one-way passage structure can be met completely according to the operation condition of the second filtering structure;
3. the supporting plate is arranged between the oil pump module and the filtering module, the oil pump module and the filtering module are fixedly connected into an integral structure through the supporting plate, the supporting plate is also provided with an oil way structure for communicating the oil pump module and the filtering module, and the damping structure is arranged in the oil way structure and used for damping the fluctuation of the oil pressure output by the oil pump module;
4. the damping structure of the invention realizes damping change through the damping adjusting ring, the damping adjusting structure is an elastic annular component, deformation can be generated according to the change of oil pressure, the fluctuation of the oil pressure pumped by the oil pump is changed to be attenuated, and oil with stable oil pressure is provided for subsequent equipment;
5. the oil pump module has a simple structure, the rapid flow of oil can be realized through the combined structure of the inner rotor and the outer rotor, the oil way for the oil to enter the oil pump module from the filtering module has a simple structure and small oil flow resistance, and the operation efficiency of the oil in the whole system is improved;
6. according to the invention, the adjusting plate is arranged in the rotor mounting groove, the discharge capacity of the oil pump can be changed through the adjusting plate, the design requirements can be met through the adjusting plates with different heights according to different requirements, and the whole system has extremely high adaptation degree and wide application;
7. the motor module comprises the driving shaft, the rotor magnetic steel and the permanent magnets, and different electromagnetic force characteristic combinations between the stator and the rotor of the motor can be realized by adjusting the width of the permanent magnets, the width of the slots of the rotor magnetic steel or changing the number of the slots of the rotor magnetic steel and the number of the permanent magnets, so that the motor module can realize modularized output power, and the application range is widened;
8. the motor module is fixed on the oil pump module through the plurality of brackets, the mounting and fixing structure is very simple, the motor module and the oil pump module are integrated into a whole, the motor module and the oil pump module are conveniently mounted on the shell of the gearbox as a whole, connecting points are reduced, and the mounting and the dismounting are very convenient;
9. the control module of the invention integrates the socket connector, can realize the fast connection with the external power supply through the socket connector, and the installation and the insertion are very convenient;
10. the filtering structures of the invention are respectively a durable metal mesh and folded paper filter paper with good filtering effect, the two-stage filtering can realize the rapid filtering of oil, the used material structure is a common structure, and the cost is low.
The invention has simple structure and high integration level, is convenient to mount and dismount to a great extent, optimizes the spatial arrangement in the shell of the gearbox, and has great popularization and application values.
Drawings
FIG. 1: an axial view of the invention;
FIG. 2: the invention is a schematic structural diagram of a filter module;
FIG. 3: the arrangement of the first filtering structure and the second filtering structure is schematic;
FIG. 4: the cross section of the filter module is schematic;
FIG. 5: the invention is a schematic diagram of a one-way channel structure;
FIG. 6: the structure of the supporting plate is schematically shown;
FIG. 7: the structure of the oil outlet channel is schematic;
FIG. 8: the invention discloses a schematic assembly structure of an oil pump module;
FIG. 9: a top view of the oil pump module of the present invention;
FIG. 10: the section of the oil pump module is schematic;
FIG. 11: an exploded schematic view of the oil pump module of the present invention;
FIG. 12: the invention is a filter module and oil pump module assembly diagram (one side of an oil outlet channel);
FIG. 13: the invention discloses a filter module and an oil pump module assembly diagram (one side of an oil inlet channel)
FIG. 14: the invention discloses a schematic assembly structure of a motor module and an oil pump module;
FIG. 15: an explosion schematic of the motor module of the present invention;
wherein: 1-a filtration module; 11-a filter cover plate; 12-a flow channel; 13-a baffle; 14-oil passing holes; 15-a baffle plate; 16-a spring; 17-steel ball; 18-a first pass filter arrangement; 19-a second filtering structure;
2-an oil pump module; 21-a middle plate; 22-rotor mounting groove; 23-inner rotor; 24-an outer rotor; 25-oil inlet hole; 26-oil outlet; 27-an adjusting plate; 28-oil suction port; 29-oil outlet; 210-a through hole;
3, a motor module; 31-motor housing; 32-a drive shaft; 33-rotor magnetic steel; 34, a card slot; 35-a permanent magnet; 36-a stator coil assembly;
4-a control module; 41-a motor controller; 42-a connector;
5, a support plate; 51-an oil inlet channel; 52-oil outlet channel; 53-damping adjusting ring; 54-an annular groove; 55-ear plate;
6, a bracket.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-15, the oil pump of this embodiment is a highly integrated form modular structure for on gearbox, including integrated in filtration module 1 of an organic whole, oil pump module 2, motor module 3 and control module 4, filtration module 1 is used for filtering fluid, avoids impurity to enter into follow-up equipment and causes harmful effects, and oil pump module 2 drive fluid flows in pipe-line system, and motor module 3 drive oil pump module 2 operates, and control module 4 is responsible for the operation of control motor module 3.
As shown in fig. 2-5, for the 2 structural schematics of filter module of this embodiment, filter module 2 is including filtering apron 11, filters apron 11 and is hollow box structure, is provided with twice filtration in the filtering apron 11, as shown in fig. 3-4, includes the first filtration 18 of coarse filtration and the second filtration 19 of fine filtration that arrange along fluid flow direction in proper order. The first filtering structure 18 is a metal net installed inside the filtering cover plate 11, and the second filtering structure 19 is a bent wave-shaped filter paper installed inside the filtering cover plate 11 (the filtering structure of the present embodiment is not limited to the metal filter net and the tooth-folded filter paper). The first filtering structure 18 and the second filtering structure 1 are arranged at intervals along the oil flowing direction, and the internal space of the filtering cover plate 11 is divided into three parts, such as a lower cavity A, a middle cavity B and an upper cavity C shown in figures 3-4, wherein oil which is not filtered firstly enters the lower cavity A, then coarse filtering is completed through the first filtering structure 18, the oil enters the middle cavity B, fine filtering is performed through the second filtering structure 19, and the oil enters the upper cavity C. Under normal conditions, the oil liquid enters the upper cavity C after being filtered twice and then enters the oil pump module 2. When the second filtering structure 19 is used for a long time, the blocking condition occurs, and oil is not easy to pass through the second filtering structure 19, and the oil in the middle cavity B directly enters the oil pump module 2 through the one-way passage structure in the filtering cover plate 11.
As shown in fig. 4 to 5, the one-way passage structure includes a flow passage 12 disposed on the filter cover plate 11, an inlet end of the flow passage 12 extends between the first filtering structure 18 and the second filtering structure 19, an outlet end is located behind the second filtering structure 19, a baffle 13 having an oil hole 14 is disposed on one side of the inlet of the flow passage 12, a baffle 15 is disposed on one side of the outlet of the flow passage 12, a spring 16 is disposed on the baffle 15, one end of the spring 16 is fixed on the baffle 15, and the other end is provided with a steel ball 17, the steel ball 17 blocks the oil hole 14 when the oil pressure in the flow passage 12 is smaller than the pressure of the spring 16. The inlet of runner 12 is in middle part cavity B (in fact, the inlet of runner 12 is located the rear of first filtration structure 18), the outlet is in upper part cavity C, when second filtration structure 19 blocks up, fluid no longer enters upper part cavity C through second filtration structure 19 after passing through first filtration structure 18, but enters runner 12, oil drives steel ball 17 compression spring 16 to open oil hole 14, enters upper part cavity C through runner 12, then enters into oil pump module 2.
As shown in fig. 6-7, this embodiment is provided with backup pad 5 between filter module 1 and oil pump module 2, backup pad 5 is the open lower extreme confined box body structure in upper end, the lower extreme of backup pad 5 and the upper end sealing connection who filters apron 11, be provided with oil feed passageway 51 and oil outlet channel 52 in the backup pad 5, oil feed passageway 51 one end enters into upper portion cavity C (like fig. 13), the other end and oil pump module 2 intercommunication, oil outlet channel 52 one end and oil pump module 2 intercommunication, the other end is provided with the damping structure who is used for 2 output oil pressure fluctuations sizes of decay oil pump module.
As shown in fig. 7, the damping structure includes a damping adjusting ring 53 disposed inside the oil outlet channel 52, an annular groove 54 for accommodating the damping adjusting ring 53 is disposed inside the oil outlet channel 52, the damping adjusting ring 53 is an elastic annular structure clamped in the annular groove 54 and capable of deforming along with changes in oil pressure, and the damping adjusting ring 53 deforms according to changes in oil pressure flowing through the oil outlet channel 52, so as to reduce fluctuation of oil pressure output by the oil pump module 2.
The oil pump module 2 of this embodiment includes the intermediate plate 21, as shown in fig. 8-14, the upper end sealing connection of intermediate plate 21 and backup pad 5, the centre of intermediate plate 21 is provided with a rotor mounting groove 22, install inner rotor 23 and cup joint the outer rotor 24 in the inner rotor 23 outside in the rotor mounting groove 22, inner rotor 23 is the gear form structure, outer rotor 24 is the annular structure with inner rotor 23 complex, and be provided with the clearance that fluid flows between the interior, outer rotor, when the rotor rotates, pressure differential appears in the clearance between the interior, outer rotor, fluid flows in the clearance.
In the present embodiment, the bottom of the middle plate 21 is provided with an oil inlet 25 and an oil outlet 26 communicating with the rotor mounting groove 22, one end of the oil inlet channel 51 on the support plate 5 extends into the upper cavity C, the other end is communicated with the oil inlet 25, one end of the oil outlet channel 52 is communicated with the oil outlet 26, and the other end supplies oil to the hydraulic system or the cooling system.
In addition, in the present embodiment, an adjusting plate 27 is disposed in the rotor mounting groove 22, as shown in fig. 10 to 13, an oil suction port 28 and an oil outlet 29 respectively communicated with the oil inlet 25 and the oil outlet 26 are disposed on the adjusting plate 27, the inner rotor and the outer rotor are placed on the adjusting plate 27, a gap between the inner rotor and the outer rotor is communicated with the oil suction port 28 and the oil outlet 29, and the adjusting plate 27 is fixed at the bottom of the mounting groove 22 by a plurality of bolts.
The inner height of the middle plate 21 is equal to the sum of the thicknesses of the inner rotor 23 and the outer rotor 24 of the oil pump and the thickness of the adjusting plate 27, so that if the modular design of the oil pump with different displacement is realized, the thicknesses of the inner rotor and the outer rotor of the oil pump can be changed along with the thickness of the adjusting plate 27, different oil pump displacement parameter combinations can be realized on the premise that other components of the electric oil pump are not changed, and the application range of the electric oil pump is widened. Meanwhile, on the premise of not changing the thicknesses of the inner rotor and the outer rotor, the displacement of the oil pump can be changed by changing the matching tooth numbers of the inner rotor 23 and the outer rotor 24 of the oil pump or modifying the tooth profile, so that different oil pump displacement parameter combinations are realized, and the application range of the electric oil pump is widened.
The motor module 3 of this embodiment is fixed on the oil pump module 2 through the support 6, as shown in fig. 8, is provided with a plurality of support 6 between motor casing 31 and the intermediate plate 21, and the upper end of intermediate plate 21 is provided with an upper cover plate, all is provided with the screw that corresponds support 6 on upper cover plate and the intermediate plate 21, and support 6 links firmly upper cover plate and intermediate plate 21 as an organic whole through bolt structure.
The motor module 3 is fixed on the bracket 6.
As shown in fig. 14 to 15, the motor module 3 includes a motor housing 31 fixed on the bracket 6, a driving shaft 32 disposed in the motor housing 31, a rotor magnetic steel 33 mounted on the driving shaft 32, and a stator coil assembly 36 surrounding the rotor magnetic steel 33, a plurality of slots 34 axially disposed are formed in the circumferential surface of the rotor magnetic steel 33, block-shaped permanent magnets 35 are embedded in the slots 34, and a bearing structure is disposed between two ends of the driving shaft 32 and the motor housing 31. The through hole 210 connected with the end of the driving shaft 32 is opened at the axial center of the inner rotor 23, when in use, the end of the driving shaft 32 extends into the through hole 210 and is fixedly connected with the inner rotor 23, and the driving shaft 32 rotates to drive the inner rotor 23 to rotate.
In order to match the change of the power requirement of the oil pump motor caused by the displacement change of the oil pump and the change of the rotating speed requirement, the magnet width of the permanent magnet 35 can be adjusted, the slotting width of the rotor magnetic steel 33 can be adjusted, or the slotting number of the rotor magnetic steel 33 and the using number of the permanent magnets 35 can be changed, so that different electromagnetic force characteristic combinations between the motor stator and the rotor can be realized, the motor module 3 can realize modularized output power, and the application range of the electric oil pump is widened.
In addition, if the output power of the motor module 3 has more modular design requirements, the output power can also be realized by adjusting the conducting wire diameter of the stator coil assembly 36 or changing the selection of power devices inside the motor controller 41. The modular design scheme can realize the modular design of the electric oil pump assembly by adjusting the design of a small number of parts on the premise of ensuring that most parts can be used continuously, greatly widens the application range of products and reduces the cost of new development and new manufacturing of the products.
As shown in fig. 1, the control module 4 of the present embodiment includes a motor controller 41 electrically connected to the motor module 3, and the motor controller 41 is provided with a connector 42 connected to an external power supply.
In addition, a plurality of modules of the present embodiment are fixed together, and an ear plate 55 is disposed on the outer side of the supporting plate 5, and a screw hole is formed on the ear plate 55, so that the whole device can be conveniently fixed on the transmission housing, as shown in fig. 6.
During the practical use, connector 42 connects external power source, machine controller 41 sends the operation instruction, motor module 3 supplies power after, drive shaft 32 begins to rotate, drive shaft 32 tip stretches into in the through-hole 210 and drives inner rotor 23 rotatory, produce pressure differential between the inner rotor and the outer rotor, produce pressure in the oil circuit, order about fluid to flow in the pipeline, fluid enters into middle part cavity B after first filtration 18 carries out the prefiltering, then filter through second filtration 19 and enter into upper portion cavity C, fluid in the upper portion cavity C enters into oil pump module 2 through backup pad 5, then flow into hydraulic system or cooling system through the oil outlet channel 52 on the backup pad 5.
When the second filtering structure 19 is blocked, oil in the middle cavity B passes through the driving steel ball 17 to compress the spring 16, the oil passing hole 14 is opened, the oil enters the upper cavity C through the flow passage 12, and the subsequent flowing process is consistent with the flowing process.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (13)
1. A modularization gearbox electric oil pump which characterized in that: the device comprises a filtering module (1), an oil pump module (2), a motor module (3) and a control module (4) which are integrated into a whole; the control module (4) is electrically connected with the motor module (3); the motor module (3) is connected with the oil pump module (2) and is used for driving the oil pump module (2) to operate; an oil inlet of the oil pump module (2) is communicated with an oil outlet of the filtering module (1); the filter module (1) comprises a first coarse filter structure (18) and a second fine filter structure (19) which are sequentially arranged along the oil flowing direction, and a one-way channel structure which allows oil to directly flow out from an oil outlet of the filter module (1) after passing through the first filter structure (18) when the second filter structure (19) is blocked to cause the flowing resistance to be greater than the set pressure is arranged in the filter module (1).
2. A modular transmission electric oil pump as defined in claim 1, wherein: the one-way channel structure comprises a flow channel (12) with an inlet end extending between a first filtering structure (18) and a second filtering structure (19) and an outlet end positioned behind the second filtering structure (19), wherein a baffle (13) provided with an oil passing hole (14) is arranged on one side of the inlet of the flow channel (12); and a valve structure which opens the oil passing hole (14) when the oil pressure is greater than the design pressure and closes the oil passing hole (14) when the oil pressure is not greater than the design pressure is arranged in the oil passing hole (14).
3. A modular transmission electric oil pump as set forth in claim 2, wherein: the valve structure comprises a baffle plate (15) arranged on one side of the outlet of the flow passage (12); the baffle (15) is provided with a spring (16) extending along the oil flowing direction; one end of the spring (16) is fixed on the baffle plate (15), and the other end of the spring is provided with a steel ball (17) which blocks the oil passing hole (14) when the oil pressure flowing through the flow passage (12) is less than the pressure of the spring (16).
4. A modular transmission electric oil pump as defined in claim 1, wherein: the oil pump filter also comprises a supporting plate (5) used for connecting the oil pump module (2) and the filter module (1); one end of the support plate (5) is hermetically connected with the filtering cover plate (11) of the filtering module (1), the other end of the support plate is hermetically connected with the middle plate (21) of the oil pump module (2), and an oil inlet channel (51) and an oil outlet channel (52) are arranged in the support plate (5); one end of the oil inlet channel (51) enters the filtering module (1), and the other end of the oil inlet channel is communicated with the oil pump module (2); one end of the oil outlet channel (52) is communicated with the oil pump module (2).
5. The modular transmission electric oil pump of claim 4, characterized by: the other end of the oil outlet channel (52) is provided with a damping structure for attenuating the fluctuation of the output oil pressure of the oil pump module (2).
6. A modular transmission electric oil pump as set forth in claim 5, wherein: the damping structure comprises a damping adjusting ring (53) arranged on the inner side of the oil outlet channel (52); an annular groove (54) for accommodating a damping adjusting ring (53) is formed in the inner side of the oil outlet channel (52); the damping adjusting ring (53) is an elastic annular structure which is clamped in the annular groove (54) and can deform along with the change of oil pressure.
7. A modular gearbox electric oil pump as defined in any one of claims 4 to 6, characterized in that: the oil pump module (2) comprises a middle plate (21) provided with a rotor mounting groove (22); an inner rotor (23) and an outer rotor (24) sleeved outside the inner rotor (23) are arranged in a rotor mounting groove (22) of the middle plate (21), and a gap for oil liquid to flow is formed between the inner rotor and the outer rotor; the bottom of the middle plate (21) is provided with an oil inlet hole (25) and an oil outlet hole (26) which are communicated with the gap; the oil inlet hole (25) and the oil outlet hole (26) are respectively communicated with the oil inlet channel (51) and the oil outlet channel (52).
8. A modular transmission electric oil pump as set forth in claim 7, wherein: and an adjusting structure for adjusting the displacement of the oil pump is arranged at the bottom of the rotor mounting groove (22).
9. A modular transmission electric oil pump as set forth in claim 8, wherein: the adjusting structure comprises an adjusting plate (27) placed in the rotor mounting groove (22); an oil suction port (28) and an oil outlet (29) which are respectively communicated with the oil inlet hole (25) and the oil outlet hole (26) are formed in the adjusting plate (27); the inner rotor and the outer rotor are placed on the adjusting plate (27), and a gap between the inner rotor and the outer rotor is communicated with the oil suction port (28) and the oil outlet (29).
10. A modular transmission electric oil pump as claimed in claim 7 or 8, characterized in that: the motor module (3) comprises a motor shell (31) fixed on the middle plate (21), a driving shaft (32) arranged in the motor shell (31), rotor magnetic steel (33) installed on the driving shaft (32) and a stator coil assembly (36) surrounding the outer side of the rotor magnetic steel (33); a plurality of clamping grooves (34) which are arranged along the axial direction are formed in the circumferential surface of the rotor magnetic steel (33); a block-shaped permanent magnet (35) is embedded in the clamping groove (34); the axial center of the inner rotor (23) is provided with a through hole (210) connected with the end part of the driving shaft (32).
11. A modular transmission electric oil pump as defined in claim 10, wherein: a plurality of brackets (6) are arranged between the motor shell (31) and the middle plate (21); the motor shell (31) is fixed on the bracket (6); the bracket (6) is fixed on the middle plate (21) through a bolt structure.
12. A modular transmission electric oil pump as defined in claim 1, wherein: the control module (4) comprises a motor controller (41) electrically connected with the motor module (3); and a connector (42) connected with an external power supply is arranged on the motor controller (41).
13. A modular transmission electric oil pump as defined in claim 1, wherein: the first filtering structure (18) is a metal net arranged on the inner side of the filtering cover plate (11); the second filtering structure (19) is a bent wave-shaped filter paper arranged on the inner side of the filtering cover plate (11).
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| CN202010404496.4A CN111608907B (en) | 2020-05-13 | 2020-05-13 | Modularization gearbox electric oil pump |
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| CN202010404496.4A CN111608907B (en) | 2020-05-13 | 2020-05-13 | Modularization gearbox electric oil pump |
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| CN111608907B CN111608907B (en) | 2021-04-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114476008A (en) * | 2022-02-18 | 2022-05-13 | 深圳市好盈科技有限公司 | Speed regulation control system for paddle |
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| CN111608907B (en) | 2021-04-27 |
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