CN115871435A - Cooling system of power assembly, electric assembly and vehicle - Google Patents
Cooling system of power assembly, electric assembly and vehicle Download PDFInfo
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- CN115871435A CN115871435A CN202310051542.0A CN202310051542A CN115871435A CN 115871435 A CN115871435 A CN 115871435A CN 202310051542 A CN202310051542 A CN 202310051542A CN 115871435 A CN115871435 A CN 115871435A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention is suitable for the technical field of automobiles, and provides a cooling system which is used for cooling a power assembly and comprises a first oil way and a second oil way. According to the invention, the first oil way and the second oil way are selectively conducted by arranging the valve member, and finally the temperature of the oil is regulated, so that the temperature of the oil is always kept in a reasonable range, and the technical problem of accelerated wear of parts or increase of energy consumption of the whole vehicle caused by overhigh or overlow temperature of the oil is avoided.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a cooling system of a power assembly, an electric assembly and a vehicle.
Background
An electric vehicle typically includes an electric drive assembly for powering the vehicle, which typically includes a powertrain (typically including an electric motor, a speed reducer, etc.), a cooling system for reducing the temperature of the powertrain, and a control assembly for controlling the power output of the powertrain. The existing cooling system usually takes away the heat of the power assembly through the circulation flow of oil liquid, so as to achieve the purpose of cooling. However, the cooling system in the prior art can appear too high or too low problem of the temperature of fluid usually, however, when the temperature of fluid was too high, can accelerate fluid high temperature oxidation rotten, lubricated effect descends, and then part wearing and tearing with higher speed, when the temperature of fluid was crossed lowly, its viscosity can rise, and mobility worsens, can increase the load of power assembly, and then can increase the energy consumption, influences whole car continuation of the journey.
Disclosure of Invention
The invention aims to provide a cooling system of a power assembly, and aims to solve the technical problems that parts are abraded in an accelerated manner or the energy consumption of the whole vehicle is increased due to overhigh or overlow temperature of oil in the prior art.
The present invention is achieved as such, a cooling system for a powertrain, comprising:
the speed reducer stores oil;
an oil pump for pumping the oil from the speed reducer;
the oil pump is connected with the heat exchange device through a first oil way, a second oil way and a valve component;
the motor, the valve member is used for selectively conducting the first oil circuit, the second oil circuit, wherein, the first oil circuit includes the oil pump at least, heat transfer device, the motor with the reduction gear, the second oil circuit includes the oil pump at least, the motor with the reduction gear, the oil return opening of motor with the retarder connection.
Further, it still includes: the temperature sensor is used for acquiring oil temperature information in the motor;
a controller connected to the temperature sensor, the valve member, respectively, the controller configured to: when the temperature information exceeds a preset temperature threshold value, controlling the valve component to conduct the first oil way so as to reduce the temperature of the motor; and when the temperature information does not exceed the preset temperature threshold value, controlling the valve component to conduct the second oil way.
Further, it still includes: the motor controller comprises a cooling inlet and a cooling outlet, and cooling liquid flows into the motor controller through the cooling inlet and flows out of the motor controller through the cooling outlet and then flows into the heat exchange device to exchange heat.
Further, the speed reducer is arranged at a first end part of the motor in the axial direction;
the motor controller is arranged on the motor and the speed reducer;
the motor controller is electrically connected with the second axial end of the motor.
Further, the motor controller is arranged at the top of the motor and the reducer, or the motor controller is arranged in a bevel space formed by the motor and the reducer, and the lowest position of the motor controller does not interfere with the work of a connecting shaft of the reducer.
Further, the heat exchange device is arranged on the speed reducer and is close to a cooling outlet of the motor controller.
Further, the decelerator includes:
the oil pump is communicated with a first oil inlet of the oil pump pipe;
the oil passage of the speed reducer shell comprises a third oil passage and a fourth oil passage, and a valve component is arranged on the fourth oil passage, wherein the third oil passage is communicated with a first oil outlet of the pump oil pipe and an oil inlet of the heat exchange device;
the first end of the oil guide pipe is communicated with the oil outlet of the heat exchange device, and the first end of the oil guide pipe is directly communicated with the first oil outlet of the pump oil pipe through the fourth oil way; and part of oil output by the second end of the oil guide pipe is output to the motor to cool the motor, and part of oil output by the second end of the oil guide pipe is output to the speed reducer to lubricate the speed reducer.
Further, the decelerator further includes:
the oil distribution pipe comprises a first branch pipe and a second branch pipe, the first branch pipe is used for outputting oil to the motor to cool the motor, and the second branch pipe is used for outputting oil to a bearing of the speed reducer to lubricate and cool the bearing.
Furthermore, the pipe diameter of the first branch pipe is 8-12mm, and the pipe diameter of the second branch pipe is 2-4mm.
Further, the decelerator further includes:
a first bearing hole communicating with the second branch pipe;
and an oil guide groove is arranged between the first bearing hole and the second bearing hole.
Further, the grooving angle of the oil guide groove is 30-60 degrees.
The invention also provides an electric assembly which comprises the cooling system of the power assembly.
The invention further provides a vehicle which comprises the electric assembly.
Compared with the prior art, the invention has the technical effects that: the cooling system provided by the invention is used for cooling a power assembly and comprises a first oil path and a second oil path, wherein the first oil path comprises an oil pump, a heat exchange device, a motor and a speed reducer, the second oil path comprises the oil pump, the motor and the speed reducer, and the cooling system further comprises a valve member for selectively conducting the first oil path and the second oil path. Specifically, when the temperature of the oil is too high, the valve member can be communicated with the first oil way, and the first oil way comprises the heat exchange device, so that the oil can exchange heat with the outside when passing through the heat exchange device, the temperature of the oil is reduced, and the temperature of the oil is in a reasonable range; when the temperature of the oil is too low, the valve component can conduct the second oil way and close the first oil way, and at the moment, the oil does not pass through the heat exchange device, and the temperature of the oil can be gradually increased in the process of cooling the motor, so that the temperature of the oil is kept within a reasonable temperature range. According to the invention, the first oil way and the second oil way are selectively conducted by arranging the valve member, and finally the temperature of the oil is regulated, so that the temperature of the oil is always kept in a reasonable range, and the technical problem of accelerated wear of parts or increase of energy consumption of the whole vehicle caused by overhigh or overlow temperature of the oil is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a cooling system provided by an embodiment of the present invention;
FIG. 2 is a perspective view of a motorized assembly provided by an embodiment of the present invention;
FIG. 3 is a perspective view of a heat exchange device provided in an embodiment of the present invention;
FIG. 4 is a block diagram of a reducer with an oil pipe according to an embodiment of the present invention;
fig. 5 is a structural diagram of a speed reducer with a housing section according to an embodiment of the present invention.
Description of the reference numerals:
10 oil pump, 60 reducer, 20 heat exchanger, 61 pump oil pipe, 21 liquid inlet hole, 62 first oil inlet, 22 liquid outlet hole, 63 first oil outlet, 23 oil inlet hole, 70 third oil way, 24 oil outlet hole, 80 fourth oil way, 30 valve component, 90 oil guide pipe, 40 motor, 94 first bearing hole, 50 motor controller, 95 second bearing hole, 51 cooling inlet, 96 oil guide groove and 52 cooling outlet.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed or operated in a particular orientation, and is not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 5, the present invention provides a cooling system for a powertrain, including:
a decelerator 60, the decelerator 60 storing oil;
an oil pump 10 for pumping the oil from the decelerator 60;
a heat exchange device 20, wherein a first oil path, a second oil path and a valve component 30 are arranged between the oil pump 10 and the heat exchange device 20;
the motor 40, the valve member 30 is used for selectively conducting the first oil path, and the second oil path, wherein the first oil path at least includes the oil pump 10, the heat exchanging device 20, the motor 40 and the speed reducer 60, the second oil path at least includes the oil pump 10, the motor 40 and the speed reducer 60, and an oil return port of the motor 40 is connected with the speed reducer 60.
The cooling system provided by the invention is used for cooling a power assembly and comprises a first oil path and a second oil path, wherein the first oil path comprises an oil pump 10, a heat exchange device 20, a motor 40 and a speed reducer 60, namely oil passes through a branch path in the figure 1, the second oil path comprises the oil pump 10, the motor 40 and the speed reducer 60, namely oil passes through the branch path in the figure 1, and the cooling system further comprises a valve member 30 for selectively communicating the first oil path and the second oil path. Specifically, when the temperature of the oil is too high, the valve member 30 may conduct the first oil path, and since the first oil path includes the heat exchanging device 20, the oil may exchange heat with the outside when passing through the heat exchanging device 20, so as to reduce the temperature of the oil, and make the temperature of the oil be in a reasonable range; when the temperature of the oil is too low, the valve member 30 may open the second oil path and close the first oil path, and at this time, the oil does not pass through the heat exchanging device 20, and the temperature of the oil may gradually rise in the process of cooling the motor 40, so as to be maintained within a reasonable temperature range. According to the invention, the first oil way and the second oil way are selectively conducted by arranging the valve component 30, and finally the temperature of the oil liquid is regulated, so that the temperature of the oil liquid is always kept in a reasonable range, and the technical problems of accelerated wear of parts or energy consumption increase of the whole vehicle caused by overhigh or overlow temperature of the oil liquid are avoided.
The position of the valve member 30 according to the present invention is not limited, as long as the first oil passage and the second oil passage can be selectively communicated, and the type of the valve member 30 is not limited, and may be an electromagnetic valve or a mechanical valve.
Further, the cooling system further includes: the temperature sensor is used for acquiring oil temperature information in the motor 40;
a controller connected to the temperature sensors, the valve member 30, respectively, the controller configured to: when the temperature information exceeds a preset temperature threshold, controlling the valve member 30 to conduct the first oil path so as to reduce the temperature of the motor 40; and when the temperature information does not exceed the preset temperature threshold value, controlling the valve component 30 to conduct the second oil path. In the embodiment of the present invention, the temperature of the oil is monitored by the temperature sensor, so as to determine whether the temperature of the oil needs to be regulated, and further control the valve member 30 to conduct the first oil path or the second oil path.
Please refer to fig. 3, further, it further includes: the motor controller 50 comprises a cooling inlet 51 and a cooling outlet 52, and the cooling liquid flows into the motor controller 50 through the cooling inlet 51, flows out of the motor controller 50 through the cooling outlet 52, and flows into the heat exchanging device 20 for heat exchange. In the embodiment of the present invention, before the cooling liquid enters the heat exchanging device 20, the motor controller 50 is cooled, and the temperature of the motor controller 50 is not too high, so that the temperature of the cooling liquid does not increase too much after passing through the motor controller 50, and the cooling liquid can still be cooled by the heat exchanging device 20. Based on the technical scheme, the cooling of the oil liquid and the cooling of the motor controller 50 are completed, and two purposes are achieved. When needing to explain, heat transfer device 20 includes feed liquor hole 21 and play liquid hole 22, still includes inlet port 23 and oil outlet 24, and the coolant liquid flows in from feed liquor hole 21, flows out from going out liquid hole 22, and fluid flows in from inlet port 23, and oil outlet 24 flows out, and coolant liquid and fluid carry out heat exchange after getting into heat transfer device 20 to the realization is with the temperature transfer of fluid to the coolant liquid, realizes the reduction of fluid temperature.
Referring to fig. 2, further, the speed reducer 60 is disposed at a first axial end of the motor 40; the motor controller 50 is disposed on the motor 40 and the decelerator 60; the motor controller 50 is electrically connected to a second axial end of the motor 40.
Referring to fig. 2, further, the motor controller 50 is disposed on top of the motor 40 and the speed reducer 60, or the motor controller 50 is disposed in a bevel space formed by the motor 40 and the speed reducer 60, and the lowest position of the motor controller 50 does not interfere with the operation of the connecting shaft of the speed reducer 60. Based on the layout, the layout of the motor controller 50 is more compact, and the occupied space is saved.
Referring to fig. 2, further, the heat exchanging device 20 is disposed on the decelerator 60 and adjacent to the cooling outlet 52 of the motor controller 50. Based on the structure, the oil inlet and outlet on the heat exchange device 20 can be directly butted with the oil inlet and outlet on the speed reducer 60, an external pipeline is not needed, the structure is simplified, and the production cost is also saved.
Referring to fig. 4 and 5, further, the decelerator 60 includes: the oil pump pipe 61, the oil pump 10 is communicated with the first oil inlet 62 of the oil pump pipe 61; a reducer 60 casing oil path, which includes a third oil path 70 and a fourth oil path 80, and a valve member 30 is disposed on the fourth oil path 80, wherein the third oil path 70 communicates the first oil outlet 63 of the pump oil pipe 61 and the oil inlet 23 of the heat exchanger 20; the first end of the oil conduit 90 is communicated with the oil outlet 24 of the heat exchange device 20, and the first end of the oil conduit 90 is directly communicated with the first oil outlet 63 of the pump oil conduit 61 through the fourth oil path 80; part of the oil output from the second end of the oil guide pipe 90 is output to the motor 40 to cool the motor 40, and part of the oil output from the second end of the oil guide pipe 90 is output to the speed reducer 60 to lubricate the speed reducer 60.
Further, the decelerator 60 further includes:
and the oil distribution pipe comprises a first branch pipe and a second branch pipe, the first branch pipe is used for outputting oil to the motor 40 so as to cool the motor 40, and the second branch pipe is used for outputting oil to the bearing of the speed reducer 60 so as to lubricate and cool the bearing. Specifically, fluid is when dividing oil pipe, divide into two the tunnel, wherein flow direction bearing frame all the way to lubricate the bearing, flow direction motor 40 all the way in addition carries out the cold cut to motor 40, based on above-mentioned technical scheme, this embodiment has all realized the cooling through pure mechanical structure to motor 40 and bearing, and the cost is lower.
Because the cooling of motor 40 needs more oil mass, and the oil mass that bearing cooling needs is less, therefore, further, the pipe diameter of first branch pipe is 8-12mm, the pipe diameter of second branch pipe is 2-4mm. The pipe diameter of the branch pipe flowing to the motor 40 is large, the oil quantity of the flow motor 40 and the oil quantity of the bearing are distributed through the difference of the pipe diameter, the structure is simple, and the effect is good.
Referring to fig. 5, further, the reducer 60 further includes:
a first bearing hole 94, the first bearing hole 94 communicating with the second branch pipe;
a second bearing hole 95, and an oil guide groove 96 is arranged between the first bearing hole 94 and the second bearing hole 95. The first bearing hole 94 and the second bearing hole 95 are connected by the oil guide groove 96, and after the bearing in the first bearing hole 94 is cooled, the oil continues to flow to the second bearing hole 95 through the oil guide groove 96 to cool the bearing in the second bearing hole 95.
Referring to fig. 5, further, in order to make the oil flow more smoothly from the first bearing hole 94 to the second bearing hole 95, the oil guiding groove 96 has a groove opening angle of 30-60 °.
The invention also provides an electric assembly which comprises the cooling system of the power assembly.
The invention also provides a vehicle which comprises the electric assembly.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (13)
1. A powertrain cooling system, comprising:
a decelerator storing oil;
an oil pump for pumping the oil from the decelerator;
the oil pump is connected with the heat exchange device through a first oil way, a second oil way and a valve component;
the motor, the valve member is used for selectively conducting the first oil circuit, the second oil circuit, wherein, the first oil circuit includes the oil pump at least, heat transfer device, the motor with the reduction gear, the second oil circuit includes the oil pump at least, the motor with the reduction gear, the oil return opening of motor with the retarder connection.
2. The cooling system of claim 1, further comprising:
the temperature sensor is used for acquiring oil temperature information in the motor;
a controller respectively connected to the temperature sensors, the valve member, the controller configured to: when the temperature information exceeds a preset temperature threshold value, controlling the valve component to conduct the first oil way so as to reduce the temperature of the motor; and when the temperature information does not exceed the preset temperature threshold, controlling the valve component to conduct the second oil way.
3. The cooling system of claim 2, further comprising:
the motor controller comprises a cooling inlet and a cooling outlet, and cooling liquid flows into the motor controller through the cooling inlet and flows out of the motor controller through the cooling outlet and then flows into the heat exchange device to exchange heat.
4. The cooling system of claim 3,
the speed reducer is arranged at the first axial end part of the motor;
the motor controller is arranged on the motor and the speed reducer;
the motor controller is electrically connected with the second axial end of the motor.
5. The cooling system according to claim 4,
the motor controller is arranged at the top of the motor and the speed reducer, or the motor controller is arranged in a bevel space formed by the motor and the speed reducer, and the lowest position of the motor controller does not interfere with the work of a connecting shaft of the speed reducer.
6. The cooling system of claim 3,
the heat exchange device is arranged on the speed reducer and is arranged close to a cooling outlet of the motor controller.
7. The cooling system according to claim 1, wherein the speed reducer includes:
the oil pump is communicated with a first oil inlet of the oil pump pipe;
the oil passage of the speed reducer shell comprises a third oil passage and a fourth oil passage, and a valve component is arranged on the fourth oil passage, wherein the third oil passage is communicated with a first oil outlet of the pump oil pipe and an oil inlet of the heat exchange device;
the first end of the oil guide pipe is communicated with the oil outlet of the heat exchange device, and the first end of the oil guide pipe is directly communicated with the first oil outlet of the pump oil pipe through the fourth oil way; and part of oil output by the second end of the oil guide pipe is output to the motor to cool the motor, and part of oil output by the second end of the oil guide pipe is output to the speed reducer to lubricate the speed reducer.
8. The cooling system of claim 7, wherein the retarder further comprises:
the oil distribution pipe comprises a first branch pipe and a second branch pipe, the first branch pipe is used for outputting oil to the motor to cool the motor, and the second branch pipe is used for outputting oil to the bearing of the speed reducer to lubricate and cool the bearing.
9. The cooling system according to claim 8,
the pipe diameter of the first branch pipe is 8-12mm, and the pipe diameter of the second branch pipe is 2-4mm.
10. The cooling system of claim 8, wherein the retarder further comprises:
a first bearing hole communicating with the second branch pipe;
and an oil guide groove is arranged between the first bearing hole and the second bearing hole.
11. The cooling system according to claim 10,
the grooving angle of the oil guide groove is 30-60 degrees.
12. An electric powertrain characterised in that it comprises a cooling system of a powertrain according to any of claims 1-11.
13. A vehicle comprising the electric powertrain of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310051542.0A CN115871435B (en) | 2023-02-02 | 2023-02-02 | Cooling system of power assembly, electric assembly and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310051542.0A CN115871435B (en) | 2023-02-02 | 2023-02-02 | Cooling system of power assembly, electric assembly and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115871435A true CN115871435A (en) | 2023-03-31 |
| CN115871435B CN115871435B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310051542.0A Active CN115871435B (en) | 2023-02-02 | 2023-02-02 | Cooling system of power assembly, electric assembly and vehicle |
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| CN115451111A (en) * | 2022-07-19 | 2022-12-09 | 东风汽车集团股份有限公司 | Hybrid electric drive assembly, cooling system and control method thereof and vehicle |
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2023
- 2023-02-02 CN CN202310051542.0A patent/CN115871435B/en active Active
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| JP2011106345A (en) * | 2009-11-17 | 2011-06-02 | Yanmar Co Ltd | Drainage pump system |
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