CN117450065A - Electronic oil pump device and vehicle - Google Patents
Electronic oil pump device and vehicle Download PDFInfo
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- CN117450065A CN117450065A CN202311765049.1A CN202311765049A CN117450065A CN 117450065 A CN117450065 A CN 117450065A CN 202311765049 A CN202311765049 A CN 202311765049A CN 117450065 A CN117450065 A CN 117450065A
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- motor shaft
- oil pump
- cavity
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- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
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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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0088—Lubrication
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0096—Heating; Cooling
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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
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The application provides an electronic oil pump device and vehicle, relates to vehicle technical field. The electronic oil pump device includes: the oil pump comprises an oil pump shell, a motor shaft arranged in the oil pump shell, a motor stator, a motor rotor and an oil delivery assembly, wherein an oil suction hole is formed in the oil pump shell, a motor shaft center hole is formed in the motor shaft, an oil inlet hole communicated with the motor shaft center hole is formed in the side wall of the motor shaft, a controller cover is arranged at the opening of the oil pump shell, a temperature acquisition device on the controller cover stretches into the motor shaft center hole, and the oil delivery assembly is used for conveying oil entering the oil pump shell through the oil suction hole into the oil inlet hole and then conveying the oil to the temperature acquisition device through the motor shaft center hole. In the electronic oil pump device, oil entering the oil pump shell from the oil suction hole enters the inside of the motor shaft through the oil conveying component and is directly conveyed to the temperature acquisition device through the center hole of the motor shaft in the motor shaft, the difference between the oil temperature signal acquired by the temperature acquisition device and the actual oil temperature is small, and the precision is high.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to an electronic oil pump device and a vehicle.
Background
At present, the electric oil displacement cold heat dissipation scheme is a mainstream scheme of each large host factory with excellent heat dissipation performance and lower cost. The oil-cooled electric drive generally adopts an electric oil pump to convey oil to an oil-water heat exchanger, and the electric drive, a speed reducer and the like are cooled and lubricated after high-temperature oil is changed into low-temperature oil through convection heat exchange of the oil-water heat exchanger. In the actual electric drive thermal management control process, the oil temperature of the oil pan is required to be used as an input signal to calculate the system cooling flow, and is an important input parameter for the control of an electric pump strategy (such as cold start, etc.), and whether the oil temperature of the oil pan is accurate or not directly influences the control effect.
One current solution for obtaining the oil temperature of the oil pan is to add a thermistor on the controller cover, introduce oil from the oil discharge cavity into the motor cavity, reach the controller cover after passing through the rotor and the stator, and detect the oil temperature through the thermistor. The disadvantage of this approach is that the oil flow through the motor stator and rotor is uneven when the oil flows through the motor stator and rotor, the oil flow under the motor is poor, and the heating of the motor stator and rotor heats the oil temperature, and the oil temperature rise values are different under different working conditions, so that the difference between the detected oil temperature and the actual oil temperature in the partial areas is less than 5 ℃, which is acceptable, but the difference in some areas is 10 ℃ or more, which cannot meet the high-precision detection requirement.
Disclosure of Invention
An object of the present application is to provide an electronic oil pump device and a vehicle, which are capable of acquiring an oil temperature signal with a smaller difference from an actual oil temperature, and having a higher precision, aiming at the defects in the prior art.
In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:
in one aspect of the embodiments of the present application, there is provided an electronic oil pump device, including: the oil pump comprises an oil pump shell, a motor shaft arranged in the oil pump shell, a motor stator, a motor rotor and an oil delivery assembly, wherein an oil suction hole is formed in the oil pump shell, a motor shaft center hole is formed in the motor shaft, an oil inlet hole communicated with the motor shaft center hole is formed in the side wall of the motor shaft, a controller cover is arranged at the opening of the oil pump shell, a temperature acquisition device on the controller cover stretches into the motor shaft center hole, and the oil delivery assembly is used for conveying oil entering the oil pump shell through the oil suction hole into the oil inlet hole and then conveying the oil to the temperature acquisition device through the motor shaft center hole.
Optionally, an oil outlet is further formed in the oil pump housing, one end of the oil outlet is communicated with the oil delivery assembly, and the other end of the oil outlet is communicated with the part to be cooled and lubricated.
Optionally, the oil delivery assembly comprises an oil pump rotor and an oil pump stator, the oil pump rotor is sleeved on the motor shaft and is positioned in the oil pump stator, an oil delivery cavity is arranged between the oil pump rotor and the oil pump stator, and the oil delivery cavity is respectively communicated with the oil suction hole and the oil inlet hole.
Optionally, an oil suction cavity and an oil discharge cavity are further arranged in the oil pump shell, the oil suction cavity is respectively communicated with the oil suction hole and the oil delivery cavity, and the oil discharge cavity is respectively communicated with the oil delivery cavity and the oil inlet hole.
Optionally, one side that the motor shaft was kept away from to the controller lid is equipped with the circuit board, the circuit board is connected with the temperature acquisition device electricity, through heat conduction between circuit board and the controller lid, still be equipped with the fender oil cover that sets up with the motor shaft is coaxial in the oil pump case, the controller lid, keep off oil cover and motor stator enclose and close and form first oil pocket, be equipped with first oil feed hole on the controller lid, the one end and the motor shaft centre bore intercommunication of first oil feed hole, the other end and first oil pocket intercommunication, be equipped with the second oil feed hole on the motor stator, the one end and the first oil pocket intercommunication of second oil feed hole, the other end and oil absorption chamber intercommunication.
Optionally, the oil retaining cover, the motor stator and the motor rotor enclose to form a second oil cavity, the side wall of the motor shaft is further provided with a third oil conveying hole, one end of the third oil conveying hole is communicated with the center hole of the motor shaft, the other end of the third oil conveying hole is communicated with the second oil cavity, the motor rotor is further provided with a fourth oil conveying hole, one end of the fourth oil conveying hole is communicated with the second oil cavity, and the other end of the fourth oil conveying hole is communicated with the oil suction cavity.
Optionally, the oil suction cavity and the oil discharge cavity are respectively positioned at two sides of the motor shaft, and the oil suction cavity and the oil suction hole are respectively positioned at two sides of the oil pump rotor.
Optionally, the controller cover is provided with a controller cover center hole, the temperature acquisition device is located in the controller cover center hole, the first oil delivery hole is located on the side wall of the controller cover center hole, and the end part of the motor shaft is inserted into the controller cover center hole.
Optionally, the oil pump shell, the motor stator, the motor rotor and the motor shaft enclose to form a third oil cavity, an oil return hole is further formed in the oil pump shell, one end of the oil return hole is communicated with the third oil cavity, the other end of the oil return hole is communicated with the oil suction cavity, and the third oil cavity is further communicated with the second oil conveying hole and the fourth oil conveying hole.
In another aspect of the embodiments of the present application, there is provided a vehicle including a vehicle body and the electronic oil pump device of any one of the above provided on the vehicle body.
The beneficial effects of this application include:
the application provides an electronic oil pump device, including: the oil pump comprises an oil pump shell, a motor shaft arranged in the oil pump shell, a motor stator, a motor rotor and an oil delivery assembly, wherein an oil suction hole is formed in the oil pump shell, a motor shaft center hole is formed in the motor shaft, an oil inlet hole communicated with the motor shaft center hole is formed in the side wall of the motor shaft, a controller cover is arranged at the opening of the oil pump shell, a temperature acquisition device on the controller cover stretches into the motor shaft center hole, and the oil delivery assembly is used for conveying oil entering the oil pump shell through the oil suction hole into the oil inlet hole and then conveying the oil to the temperature acquisition device through the motor shaft center hole. According to the electronic oil pump device, the motor shaft center hole and the oil inlet are formed in the motor shaft, and the oil conveying assembly for conveying oil is arranged between the oil suction hole and the oil inlet in the oil pump shell, so that the oil entering the oil pump shell from the oil suction hole enters the motor shaft through the oil conveying assembly, and is directly conveyed to the temperature acquisition device through the motor shaft center hole in the motor shaft. The oil liquid transmission path does not pass through the motor stator and the motor rotor, oil liquid cannot be affected by the heating of the motor stator and the motor rotor, the oil liquid flows uniformly and the temperature rise is very small, so that the deviation between the oil temperature collected by the temperature collecting device and the actual oil temperature of the oil pan under all working conditions of the electronic oil pump device is very small, the oil is not required to be calibrated and compensated too much, the precision is high, and the control requirement of a vehicle system can be met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an electronic oil pump device according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a first oil transmission path of the electronic oil pump device according to the embodiment of the present application;
fig. 3 is a schematic diagram of a second oil transmission path of the electronic oil pump device provided in the embodiment of the present application;
fig. 4 is a flow distribution coefficient diagram of orifices of the electronic oil pump device provided in the embodiment of the present application at different rotation speeds;
fig. 5 is a schematic diagram of a third oil transmission path of the electronic oil pump device according to the embodiment of the present application;
fig. 6 is a schematic diagram of a fourth oil transmission path of the electronic oil pump device according to the embodiment of the present application;
fig. 7 is a schematic diagram of all liquid transmission paths of the electronic oil pump device according to the embodiment of the present application.
Icon: 100-an electronic oil pump device; 110-an oil pump housing; 111-an oil suction hole; 112-an oil outlet hole; 113-an oil suction cavity; 114-an oil discharge chamber; 115-orifice; 116-an oil storage tank; 117-oil return holes; 120-motor shaft; 121-a motor shaft center hole; 122-an oil inlet hole; 123-a third oil delivery hole; 130-a motor stator; 140-motor rotor; 150-an oil delivery assembly; 151-an oil pump rotor; 152-an oil pump stator; 153-oil conveying chamber; 160-a first oil chamber; 170-a second oil chamber; 180-a third oil chamber; 190-oil shield; 200-a controller cover; 210-a first oil conveying hole; 220-a controller cover central aperture; 300-a temperature acquisition device; 400-circuit board; 500-heat conducting block.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. It should be noted that, in the case of no conflict, the features of the embodiments of the present application may be combined with each other, and the combined embodiments still fall within the protection scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In an aspect of the embodiments of the present application, referring to fig. 1 and 2, there is provided an electronic oil pump device 100 including: the oil pump comprises an oil pump housing 110, a motor shaft 120 arranged in the oil pump housing 110, a motor stator 130, a motor rotor 140 and an oil delivery assembly 150, wherein an oil suction hole 111 is formed in the oil pump housing 110, a motor shaft center hole 121 is formed in the motor shaft 120, an oil inlet hole 122 communicated with the motor shaft center hole 121 is formed in the side wall of the motor shaft 120, a controller cover 200 is arranged at an opening of the oil pump housing 110, a temperature acquisition device 300 on the controller cover 200 stretches into the motor shaft center hole 121, and the oil delivery assembly 150 is used for conveying oil entering the oil pump housing 110 through the oil suction hole 111 into the oil inlet hole 122 and then conveying the oil to the temperature acquisition device 300 through the motor shaft center hole 121.
The motor shaft 120 is rotatably disposed in the oil pump housing 110, and a motor shaft center hole 121 is disposed in the motor shaft 120, and the motor shaft center hole 121 extends along the axial direction of the motor shaft 120 and at least penetrates through one side end surface of the motor shaft 120, so that the temperature acquisition device 300 on the controller cover 200 can extend into the motor shaft. For example, the temperature acquisition device 300 is a thermal element, such as a thermocouple or a thermistor, and the thermistor is connected with the circuit board 400 and is converted into a temperature signal through a temperature acquisition module, so that the structure is simple and the cost is extremely low. The sidewall of the motor shaft 120 is provided with an oil inlet 122, and oil can enter the motor shaft center hole 121 through the oil inlet 122. Illustratively, the oil inlet holes 122 include a plurality of oil inlet holes 122 spaced apart along the circumferential direction of the motor shaft 120 and respectively communicating with the motor shaft center hole 121 to accelerate the oil entering the motor shaft center hole 121. The oil delivery assembly 150 is disposed in the oil pump housing 110, and in this embodiment, the structure of the oil delivery assembly 150 is not limited, as long as it can deliver the oil at the oil suction hole 111 to the oil inlet hole 122. The motor stator 130 is fixed in the oil pump housing 110, and the motor rotor 140 is fixed to the motor shaft 120 and is located in the motor stator 130.
As shown by the straight arrow in fig. 2, when the electronic oil pump device 100 works, oil enters the oil pump housing 110 from the oil suction hole 111 on the oil pump housing 110, is transferred to the oil inlet hole 122 on the side wall of the motor shaft 120 through the oil delivery assembly 150, enters the motor shaft center hole 121 inside the motor shaft 120 through the oil inlet hole 122, and is then directly transferred to the temperature acquisition device 300 through the motor shaft center hole 121. In the oil transmission path, the oil temperature variation is small, the oil temperature acquired by the temperature acquisition device 300 is close to the actual oil temperature of the oil pan, no much calibration and compensation are needed, and the precision is high.
In the above-mentioned electronic oil pump device 100, by providing the motor shaft 120 with the motor shaft center hole 121 and the oil inlet 122 and providing the oil delivery assembly 150 for delivering oil between the oil suction hole 111 and the oil inlet 122 in the oil pump housing 110, the oil entering the oil pump housing 110 from the oil suction hole 111 enters the motor shaft 120 through the oil delivery assembly 150, and is directly delivered to the temperature acquisition device 300 through the motor shaft center hole 121 in the motor shaft 120. The oil liquid transmission path does not pass through the motor stator 130 and the motor rotor 140, the oil liquid cannot be affected by the heat of the motor stator 130 and the motor rotor 140, the oil liquid flows uniformly and the temperature rise is very small, so that the deviation between the oil temperature acquired by the temperature acquisition device 300 and the actual oil temperature of the oil pan is very small under all working conditions of the electronic oil pump device 100, the oil is not required to be calibrated and compensated too much, the accuracy is high, and the control requirement of a vehicle system can be met.
Optionally, in an implementation manner of this embodiment of the present application, referring to fig. 3, an oil outlet 112 is further provided on the oil pump housing 110, where one end of the oil outlet 112 is communicated with the oil delivery assembly 150, and the other end of the oil outlet is led to the lubrication part to be cooled.
When the electronic oil pump device 100 works, oil enters the oil delivery assembly 150 from the oil suction hole 111, is discharged from the oil delivery assembly 150 and is divided into two paths, one path is conveyed to the temperature acquisition device 300 through the motor shaft 120 (shown by a straight arrow in fig. 2), the other path enters the oil outlet hole 112, leaves the electronic oil pump device 100 through the oil outlet hole 112 (shown by the straight arrow in fig. 3), and flows to the parts to be cooled and lubricated. The parts to be cooled and lubricated can be electric drives, speed reducers, hybrid transmissions and the like.
Illustratively, the oil suction hole 111 and the oil outlet hole 112 are located at the same side of the oil pump housing 110 to facilitate oil suction and oil discharge of the oil pump housing 110. In addition, the oil suction hole 111 and the oil outlet hole 112 are respectively located at opposite sides of the motor shaft 120, so that the distance between the oil suction hole 111 and the oil outlet hole 112 is further, so that the oil delivery assembly 150 is disposed between the oil suction hole 111 and the oil outlet hole 112.
Optionally, in one realizable manner of the embodiment of the present application, the oil delivery assembly 150 includes an oil pump rotor 151 and an oil pump stator 152, the oil pump rotor 151 is sleeved on the motor shaft 120 and is located in the oil pump stator 152, an oil delivery cavity 153 is disposed between the oil pump rotor 151 and the oil pump stator 152, and the oil delivery cavity 153 is respectively communicated with the oil suction hole 111 and the oil inlet hole 122.
Referring again to fig. 2, the oil pump rotor 151 rotates to convey the oil at the oil suction hole 111 to the oil inlet hole 122 and then into the motor shaft center hole 121. In the oil transmission path, only the oil pump rotor 151 generates slight heat, and the heat is transferred to the motor shaft 120 to heat the oil in a convection manner, so that the oil temperature acquired by the temperature acquisition device 300 and the actual oil temperature of the oil pan deviate little under all working conditions of the electronic oil pump device 100, the accuracy is high after calibration and compensation, and the control requirement of a vehicle system can be met.
Optionally, in an achievable manner of this embodiment of the present application, an oil suction cavity 113 and an oil discharge cavity 114 are further provided in the oil pump housing 110, the oil suction cavity 113 is respectively communicated with the oil suction cavity 111 and the oil discharge cavity 153, and the oil discharge cavity 114 is respectively communicated with the oil discharge cavity 153 and the oil inlet hole 122.
At this time, the oil entering the oil pump housing 110 from the oil suction hole 111 first enters the oil suction chamber 113, then sequentially enters the oil delivery chamber 153 and the oil discharge chamber 114, and finally enters the oil inlet hole 122 through the oil discharge chamber 114. The oil suction chamber 113 and the oil discharge chamber 114 can store oil, thereby preventing interruption of oil transmission.
Alternatively, in one implementation manner of the embodiment of the present application, the oil suction cavity 113 and the oil discharge cavity 114 are respectively located at two sides of the motor shaft 120, and the oil suction cavity 113 and the oil suction hole 111 are respectively located at two sides of the oil pump rotor 151. By such arrangement, the layout of the parts in the oil pump housing 110 can be more reasonable, the space can be saved, and the miniaturization design of the electronic oil pump device 100 is facilitated.
Alternatively, in one possible implementation manner of the embodiment of the present application, the oil drainage cavity 114 and the oil inlet hole 122 are sequentially communicated with the oil storage tank 116 through the throttle hole 115.
That is, the oil in the oil discharge chamber 114 sequentially passes through the orifice 115 and the oil reservoir 116 and then enters the oil inlet 122. When the motor shaft 120 rotates, the flow flowing into the motor shaft 120 from the oil discharging cavity 114 is influenced by the rotation speed of the electronic oil pump device 100, assuming that the total flow is Q, the oil flow flowing out from the oil outlet is Q1, and the oil flow flowing into the motor shaft 120 from the orifice 115 for cooling and lubricating is Q2, Q2/Q is the flow distribution coefficient flowing into the orifice 115, the relation between the value of the flow distribution coefficient of the orifice 115 and the rotation speed of the electronic oil pump device 100 is as shown in fig. 4, and the flow distribution coefficient of the orifice 115 decreases along with the increase of the rotation speed of the electronic oil pump device 100, so that the flow distributed into the motor shaft 120 is relatively uniform in all the rotation speed ranges of the electronic oil pump device 100, too much oil is not distributed even if the rotation speed of the electronic oil pump device 100 is higher, the power of the electronic oil pump device 100 is reduced, and the rapid temperature rise of the oil is facilitated at the same time.
Optionally, in an implementation manner of the embodiment of the present application, referring to fig. 1 and 5, a circuit board 400 is disposed on a side of the controller cover 200 away from the motor shaft 120, the circuit board 400 is electrically connected to the temperature acquisition device 300, and the circuit board 400 is thermally connected to the controller cover 200 through a thermal conductive block 500, that is, heat generated by a heating element (such as a capacitor, a micro-control unit, an inductor, etc.) on the circuit board 400 can be transferred to the controller cover 200 through the thermal conductive block 500. In order to improve the heat conduction effect, it is preferable that opposite surfaces of the heat conduction block 500 are respectively attached to the circuit board 400 and the controller cover 200. An oil shield 190 is further provided in the oil pump housing 110 coaxially with the motor shaft 120, and the oil shield 190 is located between the motor rotor 140 and the controller cover 200. The controller cover 200, the oil baffle cover 190 and the motor stator 130 enclose to form a first oil cavity 160, a first oil conveying hole 210 is formed in the controller cover 200, one end of the first oil conveying hole 210 is communicated with the motor shaft center hole 121, the other end of the first oil conveying hole is communicated with the first oil cavity 160, a second oil conveying hole is formed in the motor stator 130, one end of the second oil conveying hole is communicated with the first oil cavity 160, and the other end of the second oil conveying hole is communicated with the oil suction cavity 113.
As shown by the straight arrow in fig. 5, after the oil in the central hole 121 of the motor shaft contacts the temperature acquisition device 300, the oil enters the first oil chamber 160 through the first oil delivery hole 210 on the controller cover 200, and then flows into the oil suction chamber 113 again through the second oil delivery hole on the motor stator 130 for storage. The oil takes away heat from the surface of the controller cover 200 in a convection manner, flows into the motor stator 130, cools it, and then returns to the oil suction chamber 113.
Optionally, in an implementation manner of this embodiment of the present application, the controller cover 200 is provided with a controller cover central hole 220, the temperature collecting device 300 is located in the controller cover central hole 220, the first oil delivery hole 210 is located on a side wall of the controller cover central hole 220, and an end of the motor shaft 120 is inserted into the controller cover central hole 220.
The outer wall of the motor shaft 120 is matched with the inner wall of the central hole 220 of the controller cover, and the oil flowing out of the central hole 121 of the motor shaft enters the central hole 220 of the controller cover, contacts the temperature acquisition device 300, and enters the first oil cavity 160 through the first oil delivery hole 210. It is understood that the first oil feed hole 210 should be located at a side of the end of the motor shaft 120 to prevent the motor shaft 120 from clogging the first oil feed hole 210.
Optionally, in an implementation manner of the embodiment of the present application, referring to fig. 1 and 6, an oil blocking cover 190, a motor stator 130 and a motor rotor 140 enclose to form a second oil cavity 170, a side wall of a motor shaft 120 is further provided with a third oil delivery hole 123, one end of the third oil delivery hole 123 is communicated with a central hole 121 of the motor shaft, the other end of the third oil delivery hole is communicated with the second oil cavity 170, a fourth oil delivery hole is further provided on the motor rotor 140, one end of the fourth oil delivery hole is communicated with the second oil cavity 170, and the other end of the fourth oil delivery hole is communicated with the oil suction cavity 113.
One part of the oil in the central hole 121 of the motor shaft enters the first oil cavity 160 through the first oil delivery hole 210 on the controller cover 200 to cool the circuit board 400 and the motor stator 130 (as shown by the straight arrow in fig. 5), and the other part enters the low-temperature oil cavity through the third oil delivery hole 123 on the side wall of the motor shaft 120 and then enters the fourth oil delivery hole on the motor rotor 140 to cool the motor rotor 140, and then returns to the oil suction cavity 113 (as shown by the straight arrow in fig. 6).
When the electronic oil pump device 100 works, the circuit board 400 is more than the motor stator 130 is more than the motor rotor 140 according to the heat value, as shown in fig. 7, the oil transmission path entering the motor shaft 120 through the oil transmission assembly 150 is completely cooled according to the heat value, and after the circuit board 400 is fully cooled, the service life of each component can be greatly prolonged.
Optionally, in an implementation manner of this embodiment, referring to fig. 7, an oil pump housing 110, a motor stator 130, a motor rotor 140 and a motor shaft 120 enclose to form a third oil cavity 180, an oil return hole 117 is further disposed in the oil pump housing 110, one end of the oil return hole 117 is communicated with the third oil cavity 180, the other end is communicated with the oil suction cavity 113, and the third oil cavity 180 is further communicated with the second oil delivery hole and the fourth oil delivery hole. The oil flowing out of the motor stator 130 and the motor rotor 140 first enters the third oil chamber 180, and then returns to the oil suction chamber 113 through the oil return hole 117.
The present embodiment also provides a vehicle including a vehicle body and the electronic oil pump device 100 of any one of the above provided on the vehicle body.
The vehicle includes the same structure and advantageous effects as those of the electronic oil pump device 100 in the foregoing embodiment. The structure and the beneficial effects of the electronic oil pump device 100 have been described in detail in the foregoing embodiments, and are not described herein again.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. An electronic oil pump device, characterized by comprising: the oil pump comprises an oil pump shell, a motor shaft, a motor stator, a motor rotor and an oil delivery assembly, wherein the motor shaft, the motor stator, the motor rotor and the oil delivery assembly are arranged in the oil pump shell, an oil suction hole is formed in the oil pump shell, a motor shaft center hole is formed in the motor shaft, an oil inlet hole communicated with the motor shaft center hole is formed in the side wall of the motor shaft, a controller cover is arranged at the opening of the oil pump shell, a temperature acquisition device on the controller cover stretches into the motor shaft center hole, and the oil delivery assembly is used for conveying oil entering the oil pump shell through the oil suction hole into the oil inlet hole and then conveying the oil to the temperature acquisition device through the motor shaft center hole.
2. The electronic oil pump device of claim 1, wherein the oil pump housing is further provided with an oil outlet, one end of the oil outlet is communicated with the oil delivery assembly, and the other end of the oil outlet is led to the part to be cooled and lubricated.
3. The electronic oil pump device of claim 1, wherein the oil delivery assembly comprises an oil pump rotor and an oil pump stator, the oil pump rotor is sleeved on the motor shaft and is positioned in the oil pump stator, an oil delivery cavity is arranged between the oil pump rotor and the oil pump stator, and the oil delivery cavity is respectively communicated with the oil suction hole and the oil inlet hole.
4. The electronic oil pump device of claim 3, wherein an oil suction cavity and an oil discharge cavity are further arranged in the oil pump housing, the oil suction cavity is respectively communicated with the oil suction hole and the oil delivery cavity, and the oil discharge cavity is respectively communicated with the oil delivery cavity and the oil inlet hole.
5. The electronic oil pump device according to claim 4, wherein a circuit board is arranged on one side, far away from the motor shaft, of the controller cover, the circuit board is electrically connected with the temperature acquisition device, the circuit board is in heat conduction connection with the controller cover through a heat conduction block, an oil blocking cover coaxially arranged with the motor shaft is further arranged in the oil pump housing, the controller cover, the oil blocking cover and the motor stator are enclosed to form a first oil cavity, a first oil conveying hole is formed in the controller cover, one end of the first oil conveying hole is communicated with the central hole of the motor shaft, the other end of the first oil conveying hole is communicated with the first oil cavity, a second oil conveying hole is formed in the motor stator, and one end of the second oil conveying hole is communicated with the first oil cavity, and the other end of the second oil conveying hole is communicated with the oil suction cavity.
6. The electronic oil pump device of claim 5, wherein the oil shield, the motor stator and the motor rotor enclose to form a second oil cavity, a third oil delivery hole is further formed in the side wall of the motor shaft, one end of the third oil delivery hole is communicated with the central hole of the motor shaft, the other end of the third oil delivery hole is communicated with the second oil cavity, a fourth oil delivery hole is further formed in the motor rotor, and one end of the fourth oil delivery hole is communicated with the second oil cavity, and the other end of the fourth oil delivery hole is communicated with the oil suction cavity.
7. The electronic oil pump apparatus of claim 4, wherein the oil suction chamber and the oil discharge chamber are located on both sides of the motor shaft, respectively, and the oil suction chamber and the oil suction hole are located on both sides of the oil pump rotor, respectively.
8. The electronic oil pump device of claim 5, wherein the controller cover is provided with a controller cover center hole, the temperature acquisition device is positioned in the controller cover center hole, the first oil delivery hole is positioned on the side wall of the controller cover center hole, and the end part of the motor shaft is inserted into the controller cover center hole.
9. The electronic oil pump device according to claim 6, wherein the oil pump housing, the motor stator, the motor rotor, and the motor shaft enclose a third oil chamber, an oil return hole is further provided in the oil pump housing, one end of the oil return hole is communicated with the third oil chamber, the other end is communicated with the oil suction chamber, and the third oil chamber is further communicated with the second oil delivery hole and the fourth oil delivery hole.
10. A vehicle characterized by comprising a vehicle body and the electronic oil pump device according to any one of claims 1 to 9 provided on the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311765049.1A CN117450065B (en) | 2023-12-21 | 2023-12-21 | Electronic oil pump device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311765049.1A CN117450065B (en) | 2023-12-21 | 2023-12-21 | Electronic oil pump device and vehicle |
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| CN117450065A true CN117450065A (en) | 2024-01-26 |
| CN117450065B CN117450065B (en) | 2024-05-14 |
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| CN2833182Y (en) * | 2004-06-07 | 2006-11-01 | 刘讯岐 | Multifunctional high-efficiency energy-saving motor pump |
| CN101415920A (en) * | 2006-03-28 | 2009-04-22 | 株式会社捷太格特 | Supercharger |
| CN102242711A (en) * | 2011-07-05 | 2011-11-16 | 山东省临风鼓风机有限公司 | High-temperature resistant high-pressure-rise type Roots blower |
| DE102012020618B3 (en) * | 2012-10-19 | 2014-03-20 | Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt | Arrangement of a coolant pump |
| JP6061235B1 (en) * | 2016-03-14 | 2017-01-18 | 株式会社四葉機械製作所 | Magnet coupling structure |
| CN117052654A (en) * | 2023-08-17 | 2023-11-14 | 杭州象限科技有限公司 | High-precision temperature-control electronic oil pump |
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2023
- 2023-12-21 CN CN202311765049.1A patent/CN117450065B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2833182Y (en) * | 2004-06-07 | 2006-11-01 | 刘讯岐 | Multifunctional high-efficiency energy-saving motor pump |
| CN101415920A (en) * | 2006-03-28 | 2009-04-22 | 株式会社捷太格特 | Supercharger |
| CN102242711A (en) * | 2011-07-05 | 2011-11-16 | 山东省临风鼓风机有限公司 | High-temperature resistant high-pressure-rise type Roots blower |
| DE102012020618B3 (en) * | 2012-10-19 | 2014-03-20 | Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt | Arrangement of a coolant pump |
| JP6061235B1 (en) * | 2016-03-14 | 2017-01-18 | 株式会社四葉機械製作所 | Magnet coupling structure |
| CN117052654A (en) * | 2023-08-17 | 2023-11-14 | 杭州象限科技有限公司 | High-precision temperature-control electronic oil pump |
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|---|---|
| CN117450065B (en) | 2024-05-14 |
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