CN110798024A - Vehicle motor enhanced cooling structure based on pulsating heat pipe - Google Patents
Vehicle motor enhanced cooling structure based on pulsating heat pipe Download PDFInfo
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- CN110798024A CN110798024A CN201911195863.8A CN201911195863A CN110798024A CN 110798024 A CN110798024 A CN 110798024A CN 201911195863 A CN201911195863 A CN 201911195863A CN 110798024 A CN110798024 A CN 110798024A
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- heat pipe
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- condensation
- heat
- pulsating heat
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- 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
- H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
Abstract
The invention discloses a vehicle motor reinforced cooling structure based on a pulsating heat pipe, which comprises a machine shell, the pulsating heat pipe, a plurality of stator windings, a stator core, a rotor shaft and an end cover, wherein the rotor is arranged in the machine shell; the pulsating heat pipe is one section confined loop, the packing condensing medium in the pulsating heat pipe, the pulsating heat pipe includes the condensation segment, adiabatic section and evaporation zone, the condensation segment laminates and carries out the heat transfer in the casing or carries out the heat transfer with external cold source, evaporation zone and stator winding laminating, condensation segment and evaporation zone are connected to adiabatic section, after the evaporation zone absorbed stator winding's heat, inside condensing medium boiling, transport the heat to the condensation segment through adiabatic section, heat conduction in the condensation segment dispels the heat to casing or external cold source, make the condensing medium condensation in the condensation segment, the evaporation segment is got back to the adiabatic section of rethread.
Description
Technical Field
The invention relates to the technical field of motor cooling, in particular to a vehicle motor reinforced cooling structure based on a pulsating heat pipe.
Background
The heat pipe utilizes the phase change of liquid to realize the absorption, the transmission and the emission of heat, and the heat pipe compares the metal material of the same volume (sectional area), and the heat conductivility promotes by a wide margin. In order to reduce the power consumption per unit mileage of the new energy vehicle, it is necessary to further improve the cooling effect of the main components inside the motor, such as the iron core, the winding, and the rotor permanent magnet, and further improve the efficiency of the driving motor. At present, some scientific research institutions apply the heat pipe technology to cooling of the motor, and the heat pipe technology is used for improving heat dissipation performance and further improving efficiency.
Chinese patent publication No. CN106329808A discloses a heat pipe type winding enhanced heat dissipation motor, in which an evaporation section of a heat pipe is inserted into a gap between an end of a stator winding and a casing, a condensation section of the heat pipe is clamped in an end cover groove, heat of the stator winding is conducted to an end cover through the heat pipe, and then conducted to a water-cooling housing through the end cover.
Chinese patent publication No. CN106787451A discloses a pump-based motor cooling and noise reduction device based on the pulsating heat pipe principle, which is characterized in that a pulsating heat pipe is wound on a motor housing, the pulsating heat pipe is composed of an evaporation section and a condensation section, the evaporation section is wound on the surface of the motor housing, and the condensation section is located in a water tank, so that a stator and a rotor inside the motor cannot be cooled, a cooling water tank needs to be additionally designed, and the water tank has a large volume and is not convenient to arrange in a vehicle cabin; the condensation end of the heat pipe must be higher than the evaporation end, so that the water tank must form an angle of 30 to 90 degrees with the horizontal plane, and the purpose cannot be guaranteed under the complex road conditions of the vehicle.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a pulse heat pipe-based vehicle motor enhanced cooling structure, heat of a stator winding is conducted to a machine shell or an external cold source through the pulse heat pipe instead of being conducted to the machine shell through an end cover for cooling, the heat dissipation effect of a condensation section is better, only one pulse heat pipe is needed for heat transfer, and the assembly difficulty and the cost are reduced.
The technical scheme of the invention is as follows: a vehicle motor reinforced cooling structure based on a pulsating heat pipe comprises a machine shell, the pulsating heat pipe, a plurality of stator windings, a stator core, a rotor shaft and an end cover, wherein the rotor is arranged in the machine shell;
the pulsating heat pipe is one section confined loop, the packing condensing medium in the pulsating heat pipe, the pulsating heat pipe includes the condensation segment, adiabatic section and evaporation zone, the condensation segment laminates and carries out the heat transfer in the casing or carries out the heat transfer with external cold source, evaporation zone and stator winding laminating, condensation segment and evaporation zone are connected to adiabatic section, after the evaporation zone absorbed stator winding's heat, inside condensing medium boiling, transport the heat to the condensation segment through adiabatic section, heat conduction in the condensation segment dispels the heat to casing or external cold source, make the condensing medium condensation in the condensation segment, the evaporation segment is got back to the adiabatic section of rethread. Through laminating the condensation segment in the casing carry out the heat transfer or carry out the heat transfer with external cold source, rather than leading the casing through the end cover with the heat and cooling, the condensation segment radiating effect is better, improves the radiating efficiency, and the pulsation heat pipe is one section confined loop, reduce cost and the equipment degree of difficulty.
Further, heat conduction insulating glue is filled between the evaporation section and the stator winding. The heat conduction insulating cement coats the evaporation section, the heat of the stator winding is transferred to the evaporation section through the heat conduction insulating cement, the contact area of the stator winding and the evaporation section is increased through the heat conduction insulating cement, and the heat dissipation effect of the stator winding is enhanced.
Further, the evaporation section is clamped between two adjacent stator windings. Compare the evaporation zone laminating in stator winding's tip, the radiating effect of evaporation zone centre gripping between two adjacent stator winding is better.
Furthermore, the condensing medium in the pulsating heat pipe is water or absolute ethyl alcohol, and the liquid filling rate is 30-80%.
Further, the condensation segment is for laminating in the cyclic annular of casing inner wall, and adiabatic section is connected respectively at the both ends of condensation segment, and adiabatic section and evaporation zone are crisscross to be set up, and the top of casing sets up the annular groove, and in the condensation segment embedding annular groove, from the annular groove undercut establish a plurality of fixed slots, a plurality of fixed slot intervals set up, and the shape of fixed slot and the shape laminating of adiabatic section, adiabatic section is located in the fixed slot. The condensing section and the heat insulation section are arranged and limited by the annular groove and the fixing groove, a reinforcing element is not required to be additionally adopted, the space in the casing is saved, and the motor is convenient to assemble.
Further, heat conduction silica gel is filled between the condensation section and the shell. The heat conduction silica gel cladding condensation segment, the heat of condensation segment passes through heat conduction silica gel transmission casing, and heat conduction silica gel has increased the area of contact of condensation segment with the casing, strengthens the radiating effect of condensation segment.
Furthermore, the fixing groove is formed by downwards recessing the annular groove by 4-8mm and is used for limiting the heat insulation section, a reinforcing element is not required to be additionally adopted, and the space in the casing is saved.
Furthermore, the vehicle motor reinforced cooling structure based on the pulsating heat pipe further comprises an upper flange, a lower flange and a water jacket shell, wherein the upper flange and the lower flange are respectively arranged at the top and the bottom of the outer wall of the machine shell, the water jacket shell is sleeved outside the machine shell, the upper flange and the lower flange, a condensation space is formed by enclosing the water jacket shell, the machine shell, the upper flange and the lower flange, a condensate inlet is formed in the water jacket shell, and condensate is filled in the condensation space. Through setting up water jacket shell and condensation space for the casing can carry out the heat transfer with the condensate, strengthens heat exchange efficiency.
Further, the casing top is the interval concave a plurality of first tooth grooves of establishing respectively, and in adiabatic section embedded first tooth groove respectively, the upper flange had a plurality of second tooth grooves, in the condensation segment got into the condensation space through the second tooth groove, through carrying out the heat transfer with condensation segment and condensate, compare condensation segment and casing and carry out the heat transfer, this kind of mode heat exchange efficiency is higher.
Further, the end faces of the upper flange and the lower flange and the water jacket shell are sealed through a sealing ring or a sealant, the top end of the machine shell and the end cover are sealed through a sealing ring or a sealant, the first tooth groove and the heat insulation section are sealed through a sealing ring or a sealant, and the second tooth groove and the condensation section are sealed through a sealing ring or a sealant.
The working principle of the vehicle motor reinforced cooling structure based on the pulsating heat pipe is as follows: through with the evaporation zone centre gripping between two adjacent stator windings, and fill heat conduction insulating cement, stator winding's heat passes through heat conduction insulating cement transmission evaporation zone, behind the evaporation zone absorbed stator winding's heat, inside condensing medium boiling, transport the heat to the condensation segment through adiabatic section, conduct the heat in the condensation segment to casing or external cold source and dispel the heat again, make the condensing medium condensation in the condensation segment, the evaporation segment is got back to the adiabatic section of rethread, compare and lead the casing to cool off through the end cover with the heat, this kind of mode radiating effect is better, the radiating efficiency is higher.
Compared with the prior art, the invention has the following beneficial effects:
the enhanced cooling structure of the vehicle motor based on the pulsating heat pipe has the advantages that the condensation section is attached to the shell for heat exchange or the condensation section exchanges heat with an external cold source, the heat dissipation efficiency is improved, only one copper pipe is used, the shell is slightly changed, a pressing plate is not required to be arranged, the cost is reduced, and the assembly is easier.
Drawings
Fig. 1 is a schematic structural diagram of a pulsating heat pipe-based vehicle motor cooling enhancement structure in embodiment 1 of the present invention.
Fig. 2 is a sectional view of a pulsating heat pipe-based vehicle motor cooling enhancement structure according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of a pulsating heat pipe-based vehicle motor cooling enhancement structure in embodiments 2 and 3 of the present invention.
Fig. 4 is a sectional view of a pulsating heat pipe-based motor enhanced cooling structure for vehicles according to embodiments 2 and 3 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment provides a pulsation heat pipe-based enhanced cooling structure for a vehicle motor, which includes a casing 1, a pulsation heat pipe 2, a plurality of stator windings 3, a stator core 4, a rotor 5, a rotor shaft 6, and an end cover 7.
As shown in fig. 1 and 2, the rotor is installed in the casing, the rotor shaft is connected with the rotor, the stator core is installed between the rotor and the casing, the plurality of stator windings are respectively connected with the stator core, and the end covers are sealed at the end parts of the casing.
As shown in fig. 1 and 2, the pulsating heat pipe is a closed loop, the pulsating heat pipe is filled with a condensing medium, the condensing medium is water or absolute ethyl alcohol, the liquid filling rate is 30% -80%, the pulsating heat pipe comprises a condensing section 21, an insulating section 22 and an evaporating section 23, the condensing section is attached to the casing for heat exchange, heat-conducting silica gel is filled between the condensing section and the casing, the evaporating section is clamped between two adjacent stator windings, heat-conducting insulating glue is filled between the evaporating section and the stator windings, the insulating section is connected with the condensing section and the evaporating section, in this embodiment, the condensing section is in a ring shape attached to the inner wall of the casing, two ends of the condensing section are respectively connected with the insulating section, the insulating section and the evaporating section are arranged in a staggered manner, the top of the casing is provided with an annular groove 11, the condensing section is embedded into the annular groove, a plurality of fixing grooves 12 are recessed downwards from the annular groove, the plurality of fixing, the heat insulation section is arranged in the fixed groove, and the fixed groove is formed by downwards recessing 4-8mm from the annular groove.
The working principle of the vehicle motor reinforced cooling structure based on the pulsating heat pipe is as follows: through with the evaporation zone centre gripping between two adjacent stator windings, and fill heat conduction insulating cement, stator winding's heat passes through heat conduction insulating cement transmission evaporation zone, behind the evaporation zone absorbed stator winding's heat, inside condensing medium boiling, transport the heat to the condensation segment through adiabatic section, conduct the heat in the condensation segment to the casing and dispel the heat again, make the condensing medium condensation in the condensation segment, the evaporation segment is got back to the adiabatic section of rethread, compare and lead the casing to cool off through the end cover with the heat, this kind of mode radiating effect is better, the radiating efficiency is higher.
Example 2
As shown in fig. 3 and 4, the present embodiment is different from embodiment 1 in that the cooling structure for strengthening a vehicle motor based on a pulsating heat pipe further includes an upper flange 8, a lower flange 9, and a water jacket housing 10, the upper flange and the lower flange are respectively disposed at the top and the bottom of the outer wall of the machine shell, the water jacket housing is disposed outside the machine shell, the upper flange, and the lower flange, a condensation space 101 is defined between the water jacket housing and the machine shell, the upper flange, and the lower flange, a condensate inlet 12 is disposed on the water jacket housing, and the condensation space is filled with condensate. Through setting up water jacket shell and condensation space for the casing can carry out the heat transfer with the condensate, strengthens heat exchange efficiency.
Example 3
As shown in fig. 3 and 4, the present embodiment is different from embodiment 2 in that a plurality of first tooth grooves 13 are respectively recessed at intervals at the top of the casing, the heat insulation sections are respectively embedded in the first tooth grooves, the upper flange has a plurality of second tooth grooves 81, and the condensation section enters the condensation space through the second tooth grooves. The end faces of the upper flange and the lower flange are sealed with the water jacket shell through sealing rings or sealing glue, the top end of the machine shell is sealed with the end cover through sealing rings or sealing glue, the first tooth groove is sealed with the heat insulation section through sealing rings or sealing glue, and the second tooth groove is sealed with the condensation section through sealing rings or sealing glue. Through stretching into the condensation space with the condensation section in carry out the heat transfer with the condensate, compare the condensation section and carry out the heat transfer with the casing, this kind of mode heat exchange efficiency is higher.
As mentioned above, the present invention can be better realized, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present disclosure are intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. A vehicle motor reinforced cooling structure based on a pulsating heat pipe is characterized by comprising a machine shell, the pulsating heat pipe, a plurality of stator windings, a stator core, a rotor shaft and an end cover, wherein the rotor is arranged in the machine shell;
the pulsating heat pipe is one section confined loop, the packing condensing medium in the pulsating heat pipe, the pulsating heat pipe includes the condensation segment, adiabatic section and evaporation zone, the condensation segment laminates and carries out the heat transfer in the casing or carries out the heat transfer with external cold source, evaporation zone and stator winding laminating, condensation segment and evaporation zone are connected to adiabatic section, after the evaporation zone absorbed stator winding's heat, inside condensing medium boiling, transport the heat to the condensation segment through adiabatic section, heat conduction in the condensation segment dispels the heat to casing or external cold source, make the condensing medium condensation in the condensation segment, the evaporation segment is got back to the adiabatic section of rethread.
2. The pulsating heat pipe based vehicle motor forced cooling structure of claim 1, wherein a heat conducting insulating glue is filled between the evaporation section and the stator winding.
3. The pulsating heat pipe based automotive motor enhanced cooling structure of claim 2, wherein said evaporation section is sandwiched between two adjacent stator windings.
4. The pulsating heat pipe-based vehicle motor forced cooling structure as claimed in claim 1, wherein the condensing medium in the pulsating heat pipe is water or absolute ethyl alcohol, and the filling rate is 30% -80%.
5. The pulsating heat pipe-based vehicular motor forced cooling structure as claimed in claim 1, wherein the condensation section is in a ring shape attached to an inner wall of the casing, the condensation section has two ends respectively connected to the heat insulation sections, the heat insulation sections and the evaporation section are alternately disposed, an annular groove is disposed at an end of the casing, the condensation section is embedded in the annular groove, a plurality of fixing grooves are recessed downward from the annular groove, the plurality of fixing grooves are spaced apart from each other, a shape of the fixing groove is attached to a shape of the heat insulation section, and the heat insulation section is disposed in the fixing groove.
6. The pulsating heat pipe-based vehicle motor forced cooling structure of claim 5, wherein a heat-conducting silica gel is filled between the condensation section and the casing.
7. The pulsating heat pipe-based motor enhanced cooling structure for vehicles of claim 5, wherein the fixing groove is formed by recessing 4-8mm downward from the annular groove.
8. The pulsating heat pipe-based vehicle motor forced cooling structure of claim 1, further comprising an upper flange, a lower flange and a water jacket housing, wherein the upper flange and the lower flange are respectively disposed at the top and the bottom of the outer wall of the housing, the water jacket housing is disposed outside the housing, the upper flange and the lower flange, a condensation space is defined between the water jacket housing and the housing, the upper flange and the lower flange, a condensate inlet is disposed on the water jacket housing, and condensate is filled in the condensation space.
9. The pulsating heat pipe-based vehicle motor forced cooling structure of claim 8, wherein a plurality of first tooth grooves are respectively formed at the top of the machine shell at intervals, the heat insulation sections are respectively embedded into the first tooth grooves, the upper flange is provided with a plurality of second tooth grooves, and the condensation section enters the condensation space through the second tooth grooves.
10. The pulsating heat pipe-based vehicle motor forced cooling structure as defined in claim 9, wherein the end surfaces of the upper and lower flanges and the water jacket shell are sealed by a sealing ring or a sealant, the top end of the casing and the end cap are sealed by a sealing ring or a sealant, the first spline and the heat insulating section are sealed by a sealing ring or a sealant, and the second spline and the condensation section are sealed by a sealing ring or a sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911195863.8A CN110798024B (en) | 2019-11-28 | 2019-11-28 | Vehicle motor enhanced cooling structure based on pulsating heat pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911195863.8A CN110798024B (en) | 2019-11-28 | 2019-11-28 | Vehicle motor enhanced cooling structure based on pulsating heat pipe |
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| CN110798024A true CN110798024A (en) | 2020-02-14 |
| CN110798024B CN110798024B (en) | 2022-03-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104167A (en) * | 2020-05-26 | 2020-12-18 | 厦门钨业股份有限公司 | Motor based on pulsating heat pipe |
| CN112548127A (en) * | 2020-11-19 | 2021-03-26 | 珠海格力电器股份有限公司 | Electric spindle and machine tool |
| CN115833453A (en) * | 2023-02-02 | 2023-03-21 | 福建巨洲电机有限公司 | Heat dissipation formula generator device |
| DE102022114759A1 (en) | 2022-06-13 | 2023-12-14 | Bayerische Motoren Werke Aktiengesellschaft | Active part for an electrical machine with a pulsating heat pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104167A (en) * | 2020-05-26 | 2020-12-18 | 厦门钨业股份有限公司 | Motor based on pulsating heat pipe |
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| DE102022114759A1 (en) | 2022-06-13 | 2023-12-14 | Bayerische Motoren Werke Aktiengesellschaft | Active part for an electrical machine with a pulsating heat pipe |
| CN115833453A (en) * | 2023-02-02 | 2023-03-21 | 福建巨洲电机有限公司 | Heat dissipation formula generator device |
| CN115833453B (en) * | 2023-02-02 | 2023-04-11 | 福建巨洲电机有限公司 | Heat dissipation formula generator device |
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| CN110798024B (en) | 2022-03-29 |
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