CN114069938A - Water-gas composite cooling motor structure and new energy automobile using same - Google Patents
Water-gas composite cooling motor structure and new energy automobile using same Download PDFInfo
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- CN114069938A CN114069938A CN202010743590.2A CN202010743590A CN114069938A CN 114069938 A CN114069938 A CN 114069938A CN 202010743590 A CN202010743590 A CN 202010743590A CN 114069938 A CN114069938 A CN 114069938A
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- 238000001816 cooling Methods 0.000 title claims abstract description 75
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000000110 cooling liquid Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000009423 ventilation Methods 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000004804 winding Methods 0.000 abstract description 46
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 18
- 238000009434 installation Methods 0.000 description 13
- 230000017525 heat dissipation Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 11
- 238000003754 machining Methods 0.000 description 11
- 238000005266 casting Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 239000012809 cooling fluid Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a water-gas composite cooling motor structure, which is characterized in that an air circulation loop formed by a vent hole, a first vent hole, a second vent hole, a base cavity, a first motor inner cavity and a second motor inner cavity is used for air cooling a rotor and a winding, and heat exchange is carried out through cooling liquid in a cooling liquid flow passage to cool air in the air circulation loop, so that the air in the air circulation loop can be used for air cooling the rotor and the winding at all times, the rotor and the winding are effectively cooled, the motor fault caused by overhigh temperature of the rotor and the winding is prevented, and the service life of the motor rotor is effectively prolonged. The invention also discloses a new energy automobile applying the water-gas composite cooling motor structure.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a water-gas composite cooling motor structure and a new energy automobile using the same.
Background
With the development of society, the new energy automobile industry is rapidly developed, when a motor serving as a main component of a new energy automobile runs, the internal running temperature of the motor is increased due to high heat productivity, and the service life and reliability of an insulating material of the motor are seriously influenced; for the permanent magnet driving motor commonly used in China at present, high temperature can cause the demagnetization of the permanent magnet and influence the running performance and reliability of the motor, so that the motor needs to be cooled, and the motor is cooled by adopting a fully-closed base water cooling structure in the prior art so as to improve the running performance and reliability of the motor.
However, in the prior art, when the fully-closed base water-cooling structure is adopted to cool the motor, the winding and the rotor inside the motor are not directly cooled, and the permanent magnets in the winding and the rotor have poor high-temperature resistance and poor heat dissipation environment, so that the motor fails or has short service life.
Disclosure of Invention
In view of this, the embodiment of the invention provides a water-air composite cooling motor structure and a new energy automobile using the same, so as to solve the problem that in the prior art, a winding and a rotor inside a motor cannot be directly cooled, and finally the motor fails or the service life of the motor is shortened.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the invention discloses a water-gas composite cooling motor structure in a first aspect, which comprises: a housing assembly and a rotor assembly;
the housing assembly includes: an inner barrel, a middle barrel and an outer barrel;
the middle cylinder is arranged between the inner cylinder and the outer cylinder, a cooling liquid flow channel is formed between the inner cylinder and the middle cylinder, and a machine base cavity is formed between the middle cylinder and the outer cylinder;
the inner cylinder is provided with a first vent hole and a second vent hole, the first vent hole communicates the base cavity with the inner cavity of the first motor, and the second vent hole communicates the base cavity with the inner cavity of the second motor;
the rotor assembly includes: a rotor and an impeller;
the impeller is arranged on at least one side of the rotor;
the rotor is provided with a through ventilation hole along the axial direction, and the ventilation hole is communicated with the first motor inner cavity and the second motor inner cavity.
Preferably, the peripheral wall of the middle cylinder is provided with heat dissipation ribs.
Preferably, the heat dissipation ribs comprise axial straight ribs.
Preferably, the cooling liquid flow channel is a spiral flow channel structure.
Preferably, the peripheral wall of inner tube is equipped with spiral runner groove, the peripheral wall of inner tube with the cooperation of the internal perisporium of well section of thick bamboo forms the coolant liquid runner of spiral runner structure.
Preferably, the method further comprises the following steps: the cooling liquid flow channel is communicated with an external pipeline through the water inlet and the water outlet.
Preferably, the number of the vent holes is multiple, and the vent holes are distributed along the circumferential direction of the rotor.
Preferably, the inner cylinder and the middle cylinder are of an integrated structure.
Preferably, the method further comprises the following steps: an end cap assembly;
the end cap assembly includes: a first end cap and a second end cap;
the inner cylinder and the first end cover are of an integrated structure;
or the inner cylinder and the second end cover are of an integrated structure.
Preferably, the method further comprises the following steps: an end cap assembly;
the end cap assembly includes: a first end cap and a second end cap;
the outer cylinder and the first end cover are of an integrated structure;
or, the outer cylinder and the second end cover are of an integrated structure.
The application second aspect discloses a compound cooling motor structure of aqueous vapor, includes: a housing assembly and a rotor assembly;
the housing assembly includes: an inner cylinder and an outer cylinder;
a cooling liquid channel and a machine base cavity are formed between the inner barrel and the outer barrel, and the cooling liquid channel and the machine base cavity are alternately arranged along the circumferential direction;
the inner cylinder is provided with a first vent hole and a second vent hole, the first vent hole communicates the base cavity with the inner cavity of the first motor, and the second vent hole communicates the base cavity with the inner cavity of the second motor;
the rotor assembly includes: a rotor and an impeller;
the impeller is arranged on at least one side of the rotor;
the rotor is provided with a through ventilation hole along the axial direction, and the ventilation hole is communicated with the first motor inner cavity and the second motor inner cavity.
Preferably, the method further comprises the following steps: an end cap assembly;
the end cap assembly includes: a first end cap and a second end cap;
the inner cylinder and the first end cover are of an integrated structure;
or the inner cylinder and the second end cover are of an integrated structure.
Preferably, the method further comprises the following steps: an end cap assembly;
the end cap assembly includes: a first end cap and a second end cap;
the outer cylinder and the first end cover are of an integrated structure;
or, the outer cylinder and the second end cover are of an integrated structure.
Preferably, the method further comprises the following steps: the cooling liquid flow channel is communicated with an external pipeline through the water inlet and the water outlet.
Preferably, the number of the vent holes is multiple, and the vent holes are distributed along the circumferential direction of the rotor.
The third aspect of the invention discloses a new energy automobile, comprising: the driving motor adopts the water-gas composite cooling motor structure disclosed by any one of the first aspect of the invention or the second aspect of the invention.
According to the structure and the new energy automobile using the structure, the rotor and the winding are subjected to air cooling through the air circulation loop formed by the vent holes, the first vent hole, the second vent hole, the base cavity, the first motor inner cavity and the second motor inner cavity, and the air in the air circulation loop is cooled through heat exchange of the cooling liquid in the cooling liquid flow channel, so that the air in the air circulation loop can be cooled to the rotor and the winding at all times, the rotor and the winding are effectively cooled, the motor fault caused by overhigh temperature of the rotor and the winding is prevented, and the service life of the motor rotor is effectively prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a water-gas composite cooling motor according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an inner barrel, a middle barrel and an outer barrel provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another water-gas composite cooling motor according to an embodiment of the present invention.
The motor comprises a rotating shaft 1, a first bearing 2, a first end cover 3, a winding 4, an inner barrel 5, a middle barrel 6, an outer barrel 7, a motor stator 8, a second end cover 9, an impeller 10, a rotor 11, a second bearing 12, a vent hole 13, a first vent hole 14, a second vent hole 15, a cooling liquid flow channel 16, a base cavity 17, a first motor inner cavity 18, a second motor inner cavity 19, a water inlet 20 and a water outlet 21.
Detailed Description
The invention aims to provide a cooling structure for strengthening the heat dissipation of a motor, aiming at the existing fully-closed water-cooled motor, which can simply and efficiently cool the motor winding and the rotor, reduce the temperature rise of the motor, improve the performance of the motor and prolong the service life of the motor.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
An embodiment of the present invention provides a water vapor composite cooling motor structure, which is shown in fig. 1 and 2 and is a water vapor composite cooling motor structure, and the water vapor composite cooling motor structure includes: a housing assembly and a rotor assembly;
the housing assembly includes: an inner cylinder 5, a middle cylinder 6 and an outer cylinder 7;
the middle barrel 6 is arranged between the inner barrel 5 and the outer barrel 7, a cooling liquid flow passage 16 is formed between the inner barrel 5 and the middle barrel 6, and a base cavity 17 is formed between the middle barrel 6 and the outer barrel 7;
the inner cylinder 5 is provided with a first vent hole 14 and a second vent hole 15, the first vent hole 14 communicates the base cavity 17 with a first motor inner cavity 18, and the second vent hole 15 communicates the base cavity 17 with a second motor inner cavity 19;
the rotor assembly includes: a rotor 11 and an impeller 10;
the impeller 10 is arranged on at least one side of the rotor 11;
the rotor 11 is provided with a through ventilation hole 13 along the axial direction, and the ventilation hole 13 is communicated with the first motor inner cavity 18 and the second motor inner cavity 19.
It should be noted that a base cavity 17 formed between the middle cylinder 6 and the outer cylinder 7 is communicated with a first motor cavity 18 through a first vent hole 14 and is communicated with a second motor cavity 19 through a second vent hole 15, and finally the vent hole 13, the first vent hole 14, the second vent hole 15, the base cavity 17, the first motor cavity 18 and the second motor cavity 19 form an air circulation loop, and an impeller 10 installed on one side of the rotor 11 rotates along with the rotor 11 to drive air in the air circulation loop to flow, and since the air in the air circulation loop passes through the vent hole 13 formed in the rotor 11, the kinetic energy of the air flow in the air circulation loop can air-cool the rotor 11, thereby preventing the rotor 11 from having too high temperature during operation, and effectively prolonging the service life of the motor rotor.
It should be noted that, after air in the air circulation loop cools the rotor 11, the air becomes hot air, when the hot air circulates to the base cavity 17, a coolant flow channel 16 is formed between the inner cylinder 5 and the middle cylinder 6, the coolant cools the hot air in the base cavity 17 through heat exchange, and the cooled air enters the ventilation hole 13 of the rotor 11 again through the impeller 10 to continue cooling the rotor 11.
Preferably, the winding 4 is further arranged in the first motor inner cavity 18 and the second motor inner cavity 19 of the motor, and in an air circulation loop formed by the vent holes 13, the first vent holes 14, the second vent holes 15, the base cavity 17, the first motor inner cavity 18 and the second motor inner cavity 19, air can pass through the winding 4, so that the winding 4 can be cooled (the winding 4 does not belong to a high-temperature resistant component) in the process of cooling the rotor 11 by the air, the temperature of the rotor 11 is prevented from being too high, meanwhile, the temperature of the winding 4 can be prevented from being too high, damage caused by the temperature being too high is avoided, and the service life of the motor is effectively prolonged.
Through the compound cooling motor structure of aqueous vapor that above-mentioned discloses, through the ventilation hole, first air vent, the second air vent, the frame cavity, the air circulation return circuit that first motor inner chamber and second motor inner chamber formed, carry out the forced air cooling to rotor and winding, and carry out the air cooling of heat transfer in to air circulation return circuit through the coolant liquid in the coolant liquid runner, make the air in the air circulation return circuit can always carry out the forced air cooling to rotor and winding, effectively cool down rotor and winding, prevent that rotor and winding high temperature from causing motor fault, effectively prolong motor rotor's life. The scheme is particularly suitable for the fully-closed water-cooled motor, and can be particularly used as a driving motor of a new energy automobile.
Further, the peripheral wall of the middle cylinder 6 is provided with heat dissipation ribs.
It should be noted that, by arranging the heat dissipation ribs outside the middle cylinder 6, the heat exchange area can be increased, so that the heat exchange effect is maximized, and finally, the cooling liquid can better cool the hot air in the cavity 17 of the machine base.
Further, the heat dissipation ribs include axial straight ribs.
It should be noted that the heat dissipation rib is a structure capable of increasing a heat exchange area, and may be an axial straight rib, and may also be another structure having a structure for increasing a heat exchange area.
Further, the coolant flow channel 16 has a spiral flow channel structure.
It should be noted that, the cooling liquid flow channel 16 is configured as a spiral flow channel structure, and when the cooling liquid passes through the cooling liquid flow channel 16, the cooling liquid can effectively exchange heat with the hot air in the housing cavity 17, so that the hot air in the housing cavity 17 is cooled more quickly. In the present application, the coolant flow channel 16 is preferably a spiral flow channel structure, but is not limited to the spiral flow channel structure.
Specifically, the periphery wall of inner tube 5 is equipped with spiral runner groove, the periphery wall of inner tube 5 with the cooperation of the internal perisporium of well section of thick bamboo 6 forms the coolant liquid runner 16 of spiral runner structure.
Further, still include: a water inlet 20 and a water outlet 21 provided in the outer cylinder 7, and the coolant flow channel 16 is used for communicating with an external pipe through the water inlet 20 and the water outlet 21.
It should be noted that, through the water inlet 20 and the water outlet 21, the cooling liquid flow passage 16 can be communicated with an external pipeline, external cooling liquid can flow in from the water inlet 20 through the external pipeline, the cooling liquid exchanges heat with air through the cooling liquid flow passage 16, and the cooling liquid after heat exchange is finally discharged to the external pipeline from the water outlet 21.
Further, the number of the vent holes 13 is plural, and the vent holes are distributed along the circumferential direction of the rotor 11.
It should be noted that, the number of the ventilation holes 13 is set to be plural, and the ventilation holes are distributed along the circumferential direction of the rotor 11, so that the flow amount of air passing through the rotor 11 can be increased, and the air cooling effect on the rotor 11 can be improved. In the present application, the number of the vent holes 13 is preferably 6, but the number of the vent holes 13 is not limited to 6, and the number of the vent holes 13 is set according to actual requirements.
Further, the inner cylinder 5 and the middle cylinder 6 are of an integrated structure.
It should be noted that, the inner cylinder 5 and the middle cylinder 6 can be cast into an integrated structure by casting, so that the installation steps of the equipment can be reduced, the installation efficiency of the equipment can be effectively improved, the inner cylinder 5 and the middle cylinder 6 can be welded into an integrated structure by a welding mode, the inner cylinder 5 and the middle cylinder 6 can be machined into an integrated structure by machining, and in the application, the specific machining mode needs to be selected according to actual needs.
It should be noted that the inner tube 5 and the middle tube 6 may be an integral structure or two independent structures.
Further, the water-air composite cooling motor structure further comprises: an end cap assembly;
the end cap assembly includes: a first end cap 3 and a second end cap 9;
the inner cylinder 5 and the first end cover 3 are of an integrated structure;
or, the inner cylinder 5 and the second end cover 9 are of an integrated structure.
It should be noted that the inner cylinder 5 and the first end cap 3 may be cast as an integral structure by casting, the inner cylinder 5 and the first end cap 3 may be welded as an integral structure by welding, and the inner cylinder 5 and the first end cap 3 may be machined as an integral structure by machining, in this application, a specific machining method needs to be selected according to actual needs, and the inner cylinder 5 and the first end cap 3 are set as an integral structure, so that installation steps of equipment can be reduced, and installation efficiency of the equipment can be effectively improved.
The inner cylinder 5 and the first end cap 3 may be of an integral structure or of two independent structures.
The inner tube 5 with the second end cover 9 formula structure as an organic whole can be through the casting with the inner tube 5 with the casting formula structure as an organic whole of second end cover 9, also can will through the welding form the inner tube 5 with the second end cover 9 welds formula structure as an organic whole, can also will through machining the inner tube 5 with the second end cover 9 processing formula structure as an organic whole, in this application, concrete processing mode need select according to actual need, will the inner tube 5 with the second end cover 9 sets up to formula structure as an organic whole, can reduce the installation step of equipment, effectively improves equipment fixing efficiency.
The inner cylinder 5 and the second end cap 9 may be of an integral structure or of two independent structures.
Further, the water-air composite cooling motor structure further comprises: an end cap assembly;
the end cap assembly includes: a first end cap 3 and a second end cap 9;
the outer cylinder 7 and the first end cover 3 are of an integrated structure;
or, the outer cylinder 7 and the second end cap 9 are of an integral structure.
It should be noted that, the outer cylinder 7 and the first end cap 3 are of an integral structure, the outer cylinder 7 and the first end cap 3 can be cast into an integral structure, the outer cylinder 7 and the first end cap 3 can also be welded into an integral structure, and the outer cylinder 7 and the first end cap 3 can also be machined into an integral structure.
The outer cylinder 7 and the first end cap 3 may be formed as a single body or may be formed as two separate bodies.
The outer cylinder 7 and the second end cover 9 are of an integral structure, the outer cylinder 7 and the second end cover 9 can be cast into an integral structure, the outer cylinder 7 and the second end cover 9 can be welded into an integral structure, the outer cylinder 7 and the second end cover 9 can be machined into an integral structure, specific machining modes need to be selected according to actual needs, the outer cylinder 7 and the second end cover 9 can be arranged into an integral structure, the installation steps of equipment can be reduced, and the installation efficiency of the equipment can be effectively improved.
The outer cylinder 7 and the second end cap 9 may be of an integral structure or may be of two independent structures.
To facilitate understanding of the above solution, with reference to fig. 1 and 2, the following further describes the solution with reference to specific embodiments:
a water-gas composite cooling motor structure comprises a stator assembly (4/8), a rotor assembly (1/10/11), an end cover assembly (3/9), a machine shell assembly (5/6/7) and a bearing system (2/12).
The housing assembly, as shown in fig. 2, includes an inner cylinder 5, a middle cylinder 6, and an outer cylinder 7.
A cooling liquid flow passage 16 is formed between the inner barrel 5 and the middle barrel 6, and a cooling medium flowing in the cooling liquid flow passage 16 is cooling liquid and is connected with an external circulating pipeline through a water inlet 20 and a water outlet 21; the coolant flows in from the inlet port 20, passes through the coolant flow passage 16, and flows out from the outlet port 21. The coolant flow channel 16 is a spiral flow channel structure in this embodiment, but is not limited to the spiral flow channel structure.
A machine base cavity 17 is formed between the middle barrel 6 and the outer barrel 7, vent holes 14/15 are formed in two sides of the inner barrel to communicate the machine base cavity 17 with an inner cavity (18/19) of the motor, and the medium in the machine base cavity is air; the air in the housing cavity 17 and the cooling fluid in the cooling fluid channel 16 are subjected to heat transfer through the inner tube 6. In order to improve the air heat exchange efficiency, a heat dissipation rib is processed at the air side of the middle cylinder 6, and the heat exchange area is increased. The adoption in the section of thick bamboo outside in this scheme is the straight muscle structure of axial, also can adopt other heat dissipation muscle structures.
The rotor assembly comprises a shaft 1, a rotor 11 and an impeller 10. The rotor 11 is provided with a vent hole 13 in the circumferential direction to communicate with the motor cavities (18/19) on both sides. The impeller 10 is installed on one side of the rotor, not limited to the left or right side, and rotates together with the rotor. The air vents 13 are arranged on the rotor 11 in the scheme, the number of the air vents is 6, and the number and the shape of the air vents 13 can be set according to requirements.
The interface of the device to an external cooling system comprises a water inlet 20 and a water outlet 21.
The cavity related to the technical scheme can be realized by adopting machining, welding or casting technology, and has simple manufacturing technology and low cost.
In the scheme, except for the liquid cooling heat dissipation of the normal cooling liquid flow channel 16 of the motor, the enhanced heat dissipation of the motor winding and the rotor is realized through the following ways: when the motor runs, the impeller 10 rotates at the same rotating speed to form a suction effect, so that the air in the motor inner cavity (18/19), the vent hole (14/15) and the machine base cavity 17 forms a circulating flow; air in the motor inner cavity 18 flows through the rotor vent holes 13 to reach the inner cavity 19, blows the winding 4 and directly cools the winding and the rotor; the heated air then enters the housing cavity 17 through the vent 14, is cooled by the cooling fluid in the cooling fluid channel 16 through the inner barrel 6, and the cooled air then enters the motor cavity 18 again to continue cooling the windings and the rotor.
Key points and protection points of the application:
1. the motor cavity (18/19) circulating air exchanges heat with the coolant within the housing assembly (5/6/7) such that the air within the motor cavity (18/19) is maintained at a lower temperature, effectively cooling the windings and rotor.
2. The coaxial impeller 10 is adopted to form a suction effect along with the rotation of the motor, so that airflow circulation is caused, an additional airflow circulation power device is not needed, and the structure is simpler and more reliable.
3. The whole motor still has a fully-closed structure, and air circulates in a motor cavity (18/19) and the base cavity 17 without the risk of impurities entering.
This application advantage:
1. a machine base cavity 17 is separated from the totally-enclosed motor shell, and circulating air exchanges heat with cooling liquid in a cooling liquid flow channel 16 in the machine base cavity 17, so that the circulating air is maintained at a lower temperature, high-temperature areas (a winding 4 and a rotor 11) in the motor can be efficiently and directly cooled, the cooling effect is good, and the cooling part is more targeted. The cooling device of the circulating gas is integrated in the shell, so that the structure is more compact and simpler, and the manufacturing cost is lower.
2. Through at rotor one side installation coaxial impeller 10, follow the motor and rotate the suction and form intracavity air current circulation, do not need extra air current circulation power supply, simple structure, it is with low costs. And the temperature of the rotor is higher when the motor runs at high speed generally, and the circulation speed of the internal airflow is accelerated along with the increase of the rotating speed, so that the cooling of the winding and the rotor is better, and the invention has more pertinence to the cooling of high-heating working conditions.
Referring to fig. 3, a schematic structural diagram of another water-gas hybrid cooling motor provided in the present application includes: a housing assembly and a rotor assembly;
the housing assembly includes: an inner cylinder 5 and an outer cylinder 7;
a cooling liquid channel 16 and a base cavity 17 are formed between the inner barrel 5 and the outer barrel 7, and the cooling liquid channel 16 and the base cavity 17 are alternately arranged along the circumferential direction;
the inner cylinder 5 is provided with a first vent hole 14 and a second vent hole 15, the first vent hole 14 communicates the base cavity 17 with a first motor inner cavity 18, and the second vent hole 15 communicates the base cavity 17 with a second motor inner cavity 19;
the rotor assembly includes: a rotor 11 and an impeller 10;
the impeller 10 is arranged on at least one side of the rotor 11;
the rotor 11 is provided with a through ventilation hole 13 along the axial direction, and the ventilation hole 13 is communicated with the first motor inner cavity 18 and the second motor inner cavity 19.
It should be noted that a cooling liquid flow channel 16 and a base cavity 17 formed between the inner cylinder 5 and the outer cylinder 7 are alternately arranged along the circumferential direction, so that the cooling liquid in the cooling liquid flow channel 16 exchanges heat with the air in the base cavity 17, the vent hole 13, the first vent hole 14, the second vent hole 15, the first motor inner cavity 18 and the second motor inner cavity 19 form an air circulation loop, the impeller 10 installed on one side of the rotor 11 rotates along with the rotor 11 to drive the air in the air circulation loop to flow, and the air in the air circulation loop passes through the vent hole 13 formed in the rotor 11, so that the kinetic energy of the air flow in the air circulation loop can cool the rotor 11, thereby preventing the rotor 11 from having an excessively high temperature during operation, and effectively prolonging the service life of the motor.
It should be noted that, after the air in the air circulation loop cools the rotor 11 by air, the air becomes hot air, when the hot air circulates to the housing cavity 17, the coolant is present in the coolant flow channel 16, the coolant cools the hot air in the housing cavity 17 by heat exchange, and the cooled air enters the ventilation hole 13 of the rotor 11 again through the impeller 10 to continue cooling the rotor 11.
It is noted that the coolant channels 16 and the housing cavities 17 may be circumferentially alternated by axially spaced ribs on the outer peripheral wall of the inner barrel 5.
Preferably, the winding 4 is further arranged in the first motor inner cavity 18 and the second motor inner cavity 19 of the motor, and in an air circulation loop formed by the vent holes 13, the first vent holes 14, the second vent holes 15, the base cavity 17, the first motor inner cavity 18 and the second motor inner cavity 19, air can pass through the winding 4, so that the winding 4 can be cooled (the winding 4 does not belong to a high-temperature resistant component) in the process of cooling the rotor 11 by the air, the temperature of the rotor 11 is prevented from being too high, meanwhile, the temperature of the winding 4 can be prevented from being too high, damage caused by the temperature being too high is avoided, and the service life of the motor is effectively prolonged.
Through the technical scheme disclosed above, through the ventilation hole, first air vent, the second air vent, the frame cavity, the air circulation return circuit that first motor inner chamber and second motor inner chamber formed, carry out the forced air cooling to rotor and winding, and carry out the air cooling of heat transfer in to air circulation return circuit through the coolant liquid in the coolant liquid runner, make the air in the air circulation return circuit can always carry out the forced air cooling to rotor and winding, effectively cool down rotor and winding, prevent that rotor and winding high temperature from causing motor fault, effectively prolong motor rotor's life.
Further, the water-air composite cooling motor structure further comprises: an end cap assembly;
the end cap assembly includes: a first end cap 3 and a second end cap 9;
the inner cylinder 5 and the first end cover 3 are of an integrated structure;
or, the inner cylinder 5 and the second end cover 9 are of an integrated structure.
It should be noted that the inner cylinder 5 and the first end cap 3 may be cast as an integral structure by casting, the inner cylinder 5 and the first end cap 3 may be welded as an integral structure by welding, and the inner cylinder 5 and the first end cap 3 may be machined as an integral structure by machining, in this application, a specific machining method needs to be selected according to actual needs, and the inner cylinder 5 and the first end cap 3 are set as an integral structure, so that installation steps of equipment can be reduced, and installation efficiency of the equipment can be effectively improved.
The inner tube 5 with the second end cover 9 formula structure as an organic whole can be through the casting with the inner tube 5 with the casting formula structure as an organic whole of second end cover 9, also can will through the welding form the inner tube 5 with the second end cover 9 welds formula structure as an organic whole, can also will through machining the inner tube 5 with the second end cover 9 processing formula structure as an organic whole, in this application, concrete processing mode need select according to actual need, will the inner tube 5 with the second end cover 9 sets up to formula structure as an organic whole, can reduce the installation step of equipment, effectively improves equipment fixing efficiency.
Further, the water-air composite cooling motor structure further comprises: an end cap assembly;
the end cap assembly includes: a first end cap 3 and a second end cap 9;
the outer cylinder 7 and the first end cover 3 are of an integrated structure;
or, the outer cylinder 7 and the second end cap 9 are of an integral structure.
It should be noted that, the outer cylinder 7 and the first end cap 3 are of an integral structure, the outer cylinder 7 and the first end cap 3 can be cast into an integral structure, the outer cylinder 7 and the first end cap 3 can also be welded into an integral structure, and the outer cylinder 7 and the first end cap 3 can also be machined into an integral structure.
The outer cylinder 7 and the second end cover 9 are of an integral structure, the outer cylinder 7 and the second end cover 9 can be cast into an integral structure, the outer cylinder 7 and the second end cover 9 can be welded into an integral structure, the outer cylinder 7 and the second end cover 9 can be machined into an integral structure, specific machining modes need to be selected according to actual needs, the outer cylinder 7 and the second end cover 9 can be arranged into an integral structure, the installation steps of equipment can be reduced, and the installation efficiency of the equipment can be effectively improved.
Further, the water-air composite cooling motor structure further comprises: a water inlet 20 and a water outlet 21 provided in the outer cylinder 7, and the coolant flow channel 16 is used for communicating with an external pipe through the water inlet 20 and the water outlet 21.
It should be noted that, through the water inlet 20 and the water outlet 21, the cooling liquid flow passage 16 can be communicated with an external pipeline, external cooling liquid can flow in from the water inlet 20 through the external pipeline, the cooling liquid exchanges heat with air through the cooling liquid flow passage 16, and the cooling liquid after heat exchange is finally discharged to the external pipeline from the water outlet 21.
Further, the number of the vent holes 13 is a plurality of, and the vent holes are uniformly distributed along the circumferential direction of the rotor 11.
It should be noted that, the number of the ventilation holes 13 is set to be a plurality, and the ventilation holes are uniformly distributed along the circumferential direction of the rotor 11, so that the flow amount of air passing through the rotor 11 can be increased, and the air cooling effect on the rotor 11 is improved. In the present application, the number of the vent holes 13 is preferably 6, but the number of the vent holes 13 is not limited to 6, and the number of the vent holes 13 is set according to actual requirements.
Based on fig. 1 and fig. 2, the embodiment of the application further provides a new energy automobile, including: a drive motor;
the driving motor adopts a water-gas composite cooling motor structure.
The water-gas composite cooling motor structure comprises: a housing assembly and a rotor assembly;
the housing assembly includes: an inner cylinder 5, a middle cylinder 6 and an outer cylinder 7;
the middle barrel 6 is arranged between the inner barrel 5 and the outer barrel 7, a cooling liquid flow passage 16 is formed between the inner barrel 5 and the middle barrel 6, and a base cavity 17 is formed between the middle barrel 6 and the outer barrel 7;
the inner cylinder 5 is provided with a first vent hole 14 and a second vent hole 15, the first vent hole 14 communicates the base cavity 17 with a first motor inner cavity 18, and the second vent hole 15 communicates the base cavity 17 with a second motor inner cavity 19;
the rotor assembly includes: a rotor 11 and an impeller 10;
the impeller 10 is arranged on at least one side of the rotor 11;
the rotor 11 is provided with a through ventilation hole 13 along the axial direction, and the ventilation hole 13 is communicated with the first motor inner cavity 18 and the second motor inner cavity 19.
Through the above-mentioned new energy automobile that discloses, motor among the new energy automobile passes through the ventilation hole, first air vent, the second air vent, the frame cavity, the air circulation return circuit that first motor inner chamber and second motor inner chamber formed, rotor and winding in the motor carry out the forced air cooling, and carry out the air cooling of heat transfer in to air circulation return circuit through the coolant liquid in the coolant liquid runner, make the air in the air circulation return circuit can always carry out the forced air cooling to rotor and winding, effectively cool down rotor and winding, prevent that rotor and winding high temperature from causing motor fault, effectively prolong motor rotor's life and new energy automobile life.
Based on fig. 3, an embodiment of the present application further provides another new energy vehicle, including: a drive motor;
the driving motor adopts a water-gas composite cooling motor structure.
The water-gas composite cooling motor structure comprises: a housing assembly and a rotor assembly;
the housing assembly includes: an inner cylinder 5 and an outer cylinder 7;
a cooling liquid channel 16 and a base cavity 17 are formed between the inner barrel 5 and the outer barrel 7, and the cooling liquid channel 16 and the base cavity 17 are alternately arranged along the circumferential direction;
the inner cylinder 5 is provided with a first vent hole 14 and a second vent hole 15, the first vent hole 14 communicates the base cavity 17 with a first motor inner cavity 18, and the second vent hole 15 communicates the base cavity 17 with a second motor inner cavity 19;
the rotor assembly includes: a rotor 11 and an impeller 10;
the impeller 10 is arranged on at least one side of the rotor 11;
the rotor 11 is provided with a through ventilation hole 13 along the axial direction, and the ventilation hole 13 is communicated with the first motor inner cavity 18 and the second motor inner cavity 19.
Through the above-mentioned new energy automobile that discloses, motor among the new energy automobile passes through the ventilation hole, first air vent, the second air vent, the frame cavity, the air circulation return circuit that first motor inner chamber and second motor inner chamber formed, rotor and winding in the motor carry out the forced air cooling, and carry out the air cooling of heat transfer in to air circulation return circuit through the coolant liquid in the coolant liquid runner, make the air in the air circulation return circuit can always carry out the forced air cooling to rotor and winding, effectively cool down rotor and winding, prevent that rotor and winding high temperature from causing motor fault, effectively prolong motor rotor's life and new energy automobile life.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (16)
1. The utility model provides a compound cooling motor structure of aqueous vapor which characterized in that includes: a housing assembly and a rotor assembly;
the housing assembly includes: an inner cylinder (5), a middle cylinder (6) and an outer cylinder (7);
the middle barrel (6) is arranged between the inner barrel (5) and the outer barrel (7), a cooling liquid flow passage (16) is formed between the inner barrel (5) and the middle barrel (6), and a machine base cavity (17) is formed between the middle barrel (6) and the outer barrel (7);
the inner cylinder (5) is provided with a first vent hole (14) and a second vent hole (15), the first vent hole (14) communicates the base cavity (17) with the first motor inner cavity (18), and the second vent hole (15) communicates the base cavity (17) with the second motor inner cavity (19);
the rotor assembly includes: a rotor (11) and an impeller (10);
the impeller (10) is arranged on at least one side of the rotor (11);
the rotor (11) is axially provided with a through ventilation hole (13), and the ventilation hole (13) is communicated with the first motor inner cavity (18) and the second motor inner cavity (19).
2. The water-gas composite cooling motor structure as claimed in claim 1, wherein the outer peripheral wall of the middle cylinder (6) is provided with heat dissipating ribs.
3. The water gas composite cooling motor structure according to claim 2, wherein the heat dissipating ribs comprise axial straight ribs.
4. The water gas composite cooling motor structure according to claim 1, wherein the cooling liquid flow passage (16) is a spiral flow passage structure.
5. The water-gas composite cooling motor structure according to claim 4, wherein the outer peripheral wall of the inner cylinder (5) is provided with a spiral flow channel groove, and the outer peripheral wall of the inner cylinder (5) and the inner peripheral wall of the middle cylinder (6) are matched to form the cooling liquid flow channel (16) of the spiral flow channel structure.
6. The water gas composite cooling motor structure according to claim 1, further comprising: the cooling liquid flow channel (16) is arranged at a water inlet (20) and a water outlet (21) of the outer barrel (7), and the cooling liquid flow channel (16) can be communicated with an external pipeline through the water inlet (20) and the water outlet (21).
7. The water gas composite cooling motor structure according to claim 1, wherein the number of the ventilation holes (13) is plural and is distributed along the circumferential direction of the rotor (11).
8. The water gas composite cooling motor structure according to claim 1, wherein the inner drum (5) and the middle drum (6) are of an integral structure.
9. The water gas composite cooling motor structure according to claim 1, further comprising: an end cap assembly;
the end cap assembly includes: a first end cap (3) and a second end cap (9);
the inner cylinder (5) and the first end cover (3) are of an integrated structure;
or the inner cylinder (5) and the second end cover (9) are of an integrated structure.
10. The water gas composite cooling motor structure according to claim 1, further comprising: an end cap assembly;
the end cap assembly includes: a first end cap (3) and a second end cap (9);
the outer cylinder (7) and the first end cover (3) are of an integrated structure;
or the outer cylinder (7) and the second end cover (9) are of an integrated structure.
11. The utility model provides a compound cooling motor structure of aqueous vapor which characterized in that includes: a housing assembly and a rotor assembly;
the housing assembly includes: an inner cylinder (5) and an outer cylinder (7);
a cooling liquid channel (16) and a machine base cavity (17) are formed between the inner barrel (5) and the outer barrel (7), and the cooling liquid channel (16) and the machine base cavity (17) are alternately arranged along the circumferential direction;
the inner cylinder (5) is provided with a first vent hole (14) and a second vent hole (15), the first vent hole (14) communicates the base cavity (17) with the first motor inner cavity (18), and the second vent hole (15) communicates the base cavity (17) with the second motor inner cavity (19);
the rotor assembly includes: a rotor (11) and an impeller (10);
the impeller (10) is arranged on at least one side of the rotor (11);
the rotor (11) is axially provided with a through ventilation hole (13), and the ventilation hole (13) is communicated with the first motor inner cavity (18) and the second motor inner cavity (19).
12. The water gas composite cooling motor structure according to claim 11, further comprising: an end cap assembly;
the end cap assembly includes: a first end cap (3) and a second end cap (9);
the inner cylinder (5) and the first end cover (3) are of an integrated structure;
or the inner cylinder (5) and the second end cover (9) are of an integrated structure.
13. The water gas composite cooling motor structure according to claim 11, further comprising: an end cap assembly;
the end cap assembly includes: a first end cap (3) and a second end cap (9);
the outer cylinder (7) and the first end cover (3) are of an integrated structure;
or the outer cylinder (7) and the second end cover (9) are of an integrated structure.
14. The water gas composite cooling motor structure according to claim 11, further comprising: the cooling liquid flow channel (16) is arranged at a water inlet (20) and a water outlet (21) of the outer barrel (7), and is communicated with an external pipeline through the water inlet (20) and the water outlet (21).
15. The water gas composite cooling motor structure according to claim 11, wherein the number of the ventilation holes (13) is plural and is distributed along the circumferential direction of the rotor (11).
16. A new energy automobile comprises: the driving motor is characterized in that the driving motor adopts the structure of the water-gas composite cooling motor as claimed in any one of claims 1 to 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010743590.2A CN114069938A (en) | 2020-07-29 | 2020-07-29 | Water-gas composite cooling motor structure and new energy automobile using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010743590.2A CN114069938A (en) | 2020-07-29 | 2020-07-29 | Water-gas composite cooling motor structure and new energy automobile using same |
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| Publication Number | Publication Date |
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| CN114069938A true CN114069938A (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010743590.2A Pending CN114069938A (en) | 2020-07-29 | 2020-07-29 | Water-gas composite cooling motor structure and new energy automobile using same |
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| CN (1) | CN114069938A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219954A (en) * | 1995-12-08 | 1997-08-19 | Fuji Electric Co Ltd | Rotating electric machine equipped with cooling equipment |
| CN104505971A (en) * | 2014-12-26 | 2015-04-08 | 山西汾西重工有限责任公司 | Water jacket inner-outer cooling structure |
-
2020
- 2020-07-29 CN CN202010743590.2A patent/CN114069938A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219954A (en) * | 1995-12-08 | 1997-08-19 | Fuji Electric Co Ltd | Rotating electric machine equipped with cooling equipment |
| CN104505971A (en) * | 2014-12-26 | 2015-04-08 | 山西汾西重工有限责任公司 | Water jacket inner-outer cooling structure |
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Application publication date: 20220218 |