CN108347132B - Dual-mode multistage high-power-density instantaneous cooling motor and use method thereof - Google Patents
Dual-mode multistage high-power-density instantaneous cooling motor and use method thereof Download PDFInfo
- Publication number
- CN108347132B CN108347132B CN201810180190.8A CN201810180190A CN108347132B CN 108347132 B CN108347132 B CN 108347132B CN 201810180190 A CN201810180190 A CN 201810180190A CN 108347132 B CN108347132 B CN 108347132B
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- Prior art keywords
- cooling
- motor
- stator
- instantaneous
- cooling unit
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2209/00—Specific aspects not provided for in the other groups of this subclass relating to systems for cooling or ventilating
Abstract
The invention relates to a double-mode multistage high-power-density instantaneous cooling motor and a using method thereof, wherein the instantaneous cooling modes comprise two instantaneous cooling modes, one is a local cooling mode, the other is an integral cooling mode, each instantaneous cooling mode also comprises a plurality of cooling levels, the basic structure of the motor comprises a motor stator, a motor rotor and instantaneous cooling units, the instantaneous cooling units are arranged in the motor, the cooling units contain liquid nitrogen or dry ice and other low-temperature substances, when the motor is overheated, the low-temperature substances in the instantaneous cooling units are released for absorbing heat, and the cooling of the motor is realized.
Description
Technical Field
The invention relates to the technical field of power motors, in particular to a dual-mode multistage high-power-density instantaneous cooling motor and a using method thereof.
Background
The motor is used as a driving unit and is easy to control, and the power transmission circuit only depends on a power wire. Therefore, the development trend of all-electric appliances, especially aviation appliances, has been paid attention to in the whole industry, and therefore, the development of high power density motors is a useful work meeting the needs of the times.
In many occasions needing power output, driving modes such as an internal combustion engine, a motor, hydraulic pressure and the like can be sufficient, but compared with the internal combustion engine, the noise of the motor is low, the torque output is stable, and no tail gas is discharged; compared with a hydraulic system, the safety and the reliability of the motor drive have obvious advantages. However, the lower power density of the motor has always limited the further popularization and application of the motor, and for this reason, attempts have been made to develop a motor with higher power density.
The main limiting conditions that the power density of the motor cannot be improved are that the heat is generated, the power of the motor is increased, the heat generated by the motor is increased inevitably, and the motor needs to be cooled, but the weight of the motor body is increased by the existing cooling modes such as water cooling, oil cooling and the like, and the power density of the motor is reduced, so that the best cooling method is natural cooling from the viewpoint of improving the power density; however, when the power density of the motor is high, natural cooling can only ensure that the motor does not have faults caused by overheating when the motor works under a rated working condition. In the actual working process, the motor is inevitably in some special working conditions, when some reasons cause the local temperature rise of the motor or the whole temperature rise of the motor is caused by short-time overload, the natural cooling often cannot meet the cooling requirement of the motor, and further the motor is damaged by overheating.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a dual-mode multistage high-power-density instantaneous cooling motor and a using method thereof, wherein the motor can adopt proper cooling modes and cooling levels in a targeted manner no matter under the working condition that the local temperature rise or the overall temperature rise is too high through two working modes and each working mode has multiple cooling levels, so that the motor is prevented from being damaged due to overheating caused by short-time temperature rise.
In order to achieve the purpose, the invention adopts the technical scheme that:
a dual-mode multistage high power density instantaneous cooling motor comprises a motor stator 10, a motor rotor 20 and an instantaneous cooling unit 30, wherein the motor stator 10 and the instantaneous cooling unit 30 are positioned inside the motor rotor 20; the motor rotor 20 comprises a motor rotor yoke 21 positioned on the outer side and a permanent magnet 22 positioned on the inner side, the motor stator 10 comprises a stator winding 13, a stator yoke 11 and a stator slot 12, the stator slot 12 is arranged around the permanent magnet 22 in an equal division mode, the instantaneous cooling unit 30 comprises a stator lower instantaneous cooling unit 31, a stator upper instantaneous cooling unit 32 and a rotor cooling unit 33, the stator lower instantaneous cooling unit 31 and the stator upper instantaneous cooling unit 32 are fixed in the stator slot 12, and the rotor cooling unit 33 is fixed on the motor rotor yoke 21 and clamped between the permanent magnets 22 fixed on the motor rotor yoke 21.
The instantaneous cooling unit 30 is provided with a miniature temperature measuring device.
The instant cooling unit 30 is filled with a cooling material.
The instant cooling unit 30 is made of hard material as a shell.
The rotor cooling unit 33 is disposed in four equal parts around the permanent magnet 22.
A method for using a dual-mode multistage high power density instantaneous cooling motor, the cooling mode of the motor is divided into a local cooling mode 41 and a whole cooling mode 42;
the local cooling mode 41 comprises local primary cooling 51, local secondary cooling 52 or local tertiary cooling 53;
the local primary cooling 51 is used for releasing cooling substances in the lower instantaneous cooling unit 31 in the corresponding control area to cool the motor; the local secondary cooling 52 is used for releasing cooling substances in the stator lower layer instant cooling unit 31 and the stator upper layer instant cooling unit 32 in the corresponding control area to cool the motor; the local three-stage cooling 53 is used for releasing cooling substances in the stator lower layer instant cooling unit 31, the stator upper layer instant cooling unit 32 and all the rotor cooling units 33 in the corresponding control area to cool the motor;
the integral cooling mode 42 includes integral primary cooling 54, integral secondary cooling 55, and integral tertiary cooling 56;
the integral primary cooling 54 is used for releasing cooling substances in the lower instantaneous cooling unit 31 in all the control areas to cool the motor; the integral secondary cooling 55 is used for releasing cooling substances in the stator lower layer instant cooling unit 31 and the stator upper layer instant cooling unit 32 in all control areas to cool the motor; the integrated tertiary cooling 56 cools the motor by releasing the cooling substances in the stator lower instantaneous cooling unit 31 and the stator upper instantaneous cooling unit 32 in all the control regions and all the rotor cooling units 33.
The invention has the beneficial effects that:
the invention can pertinently adopt a proper cooling mode and a proper cooling level no matter the motor is under the working condition of local temperature rise or over-high integral temperature rise, and ensure that the motor is not overheated and damaged due to short-time temperature rise.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention.
Fig. 2 is a sectional view of a motor.
Fig. 3 is an isometric view of the stator and rotor inside the motor.
FIG. 4 is a schematic diagram of a motor cooling mode and staging.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the basic structure of the motor is a motor stator 10, a motor rotor 20 and an instantaneous cooling unit 30, wherein the instantaneous cooling unit 30 comprises a stator lower instantaneous cooling unit 31, a stator upper instantaneous cooling unit 32 and a rotor cooling unit 33. As shown in fig. 3, the stator lower instantaneous cooling unit 31 is fixed in the stator slot 12, sandwiched between the stator winding 13 and the stator yoke 11; the stator upper layer instantaneous cooling unit 32 is fixed in the stator slot 12 and clamped in the stator winding 13; the rotor cooling unit 33 is fixed to the motor rotor yoke 21, and is sandwiched between the permanent magnets 22 fixed to the motor rotor yoke 21. As shown in fig. 4, the motor further has two cooling modes, namely a local cooling mode 41 and a whole cooling mode 42, wherein the local cooling mode 41 has a plurality of levels, such as a local primary cooling 51, a local secondary cooling 52 and a local tertiary cooling 53; integral cooling mode 42 has multiple levels of integral primary cooling 54, integral secondary cooling 55, integral tertiary cooling 56, and the like.
Meanwhile, from the control perspective, the motor is equally divided into n control areas according to the number of slots of the motor stator, the motor stator adopted in the embodiment has 24 slots, four adjacent slots are divided into one control area, and each area is shown in fig. 3. The instantaneous cooling unit 30 is internally provided with a cooling substance and a micro temperature measuring device, and the temperature inside the motor is monitored through the micro temperature measuring device.
When the motor is overheated, the temperature information monitored by the micro temperature measuring device on the instantaneous cooling unit 30 can determine the temperature values of the heating area and the heating area of the motor, so that the temperature change trend of the heating area can be predicted, according to the information, the double-mode multistage high-power-density instantaneous cooling motor can automatically select a proper cooling mode and a proper cooling level, and the cooling unit 30 releases a reasonable amount of cooling substances at a proper position according to the selected cooling mode and the cooling level to absorb the heat generated by the motor, so that the instantaneous forced cooling of the motor is realized.
When the overheating area of the motor does not exceed half of the total area of the motor, the motor adopts a local cooling mode 41, only the overheating area releases cooling substances to cool the motor, and when the overheating area of the motor exceeds half of the total area of the motor, an overall cooling mode 42 is adopted, all the areas of the motor release cooling substances, and the motor is cooled integrally.
In the local cooling mode 41 or the overall cooling mode 42, the average slope of the temperature rise curve of the motor is divided into three levels, namely slow level, medium level and fast level, according to the actual working condition, and the three levels correspond to the three cooling levels of the motor. When the slope of the motor temperature rise curve is slow, local primary cooling 51 or integral primary cooling 54 is adopted; when the slope of the motor temperature rise curve is 'middle', local secondary cooling 52 or overall secondary cooling 55 is adopted; when the motor temperature rise curve slope is "fast", either local three-stage cooling 53 or global three-stage cooling 56 is employed.
The local primary cooling 51 is used for releasing cooling substances in the lower instantaneous cooling unit 31 in the corresponding control area to cool the motor; the local secondary cooling 52 is used for releasing cooling substances in the stator lower layer instant cooling unit 31 and the stator upper layer instant cooling unit 32 in the corresponding control area to cool the motor; the local tertiary cooling 53 cools the motor by releasing the cooling substances in the stator lower instantaneous cooling unit 31 and the stator upper instantaneous cooling unit 32 and all the rotor cooling units 33 in the corresponding control regions. The integral primary cooling 54 is used for releasing cooling substances in the lower instantaneous cooling units 31 in all the control areas to cool the motor; the integral secondary cooling 55 is used for releasing cooling substances in the stator lower layer instant cooling unit 31 and the stator upper layer instant cooling unit 32 in all control areas to cool the motor; the integrated tertiary cooling 56 cools the motor by releasing the cooling substances in the stator lower instantaneous cooling unit 31 and the stator upper instantaneous cooling unit 32 in all the control regions and all the rotor cooling units 33.
Claims (1)
1. A method of use of a dual-mode multistage high power density instantaneous cooling motor, characterized in that the cooling modes of the motor are divided into a partial cooling mode (41) and a global cooling mode (42);
the local cooling mode (41) comprises local primary cooling (51), local secondary cooling (52) or local tertiary cooling (53);
wherein, the local primary cooling (51) is used for releasing cooling substances in the lower instantaneous cooling unit (31) in the corresponding control area to cool the motor; the local secondary cooling (52) is used for releasing cooling substances in the stator lower layer instant cooling unit (31) and the stator upper layer instant cooling unit (32) in the corresponding control area to cool the motor; the local three-stage cooling (53) is used for releasing cooling substances in the stator lower-layer instantaneous cooling unit (31), the stator upper-layer instantaneous cooling unit (32) and all the rotor cooling units (33) in the corresponding control area to cool the motor;
said integral cooling mode (42) comprising integral primary cooling (54), integral secondary cooling (55) and integral tertiary cooling (56);
the integral primary cooling (54) is used for releasing cooling substances in the lower instantaneous cooling unit (31) in all the control areas to cool the motor; the integral secondary cooling (55) is used for releasing cooling substances in the stator lower layer instant cooling unit (31) and the stator upper layer instant cooling unit (32) in all control areas to cool the motor; the integral three-stage cooling (56) is used for releasing cooling substances in the stator lower-layer instantaneous cooling unit (31), the stator upper-layer instantaneous cooling unit (32) and all the rotor cooling units (33) in all the control areas to cool the motor;
the cooling motor comprises a motor stator (10), a motor rotor (20) and an instantaneous cooling unit (30), and is characterized in that the motor stator (10) and the instantaneous cooling unit (30) are positioned inside the motor (20); the motor rotor (20) comprises a motor rotor magnetic yoke (21) positioned on the outer side and permanent magnets (22) positioned on the inner side, the motor stator (10) comprises a stator winding (13), a stator magnetic yoke (11) and stator slots (12), the stator slots (12) are arranged around the permanent magnets (22) in an equal distribution mode, the instantaneous cooling unit (30) comprises a stator lower-layer instantaneous cooling unit (31), a stator upper-layer instantaneous cooling unit (32) and a rotor cooling unit (33), the stator lower-layer instantaneous cooling unit (31) and the stator upper-layer instantaneous cooling unit (32) are fixed in the stator slots (12), and the rotor cooling unit (33) is fixed on the motor rotor magnetic yoke (21) and clamped between the permanent magnets (22) fixed on the motor rotor magnetic yoke (21);
the instantaneous cooling unit (30) is provided with a micro temperature measuring device;
the instantaneous cooling unit (30) is filled with a cooling substance;
the instantaneous cooling unit (30) adopts a hard material as a shell;
the rotor cooling units (33) are arranged around the permanent magnets (22) in four equal parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180190.8A CN108347132B (en) | 2018-03-05 | 2018-03-05 | Dual-mode multistage high-power-density instantaneous cooling motor and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180190.8A CN108347132B (en) | 2018-03-05 | 2018-03-05 | Dual-mode multistage high-power-density instantaneous cooling motor and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108347132A CN108347132A (en) | 2018-07-31 |
| CN108347132B true CN108347132B (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810180190.8A Expired - Fee Related CN108347132B (en) | 2018-03-05 | 2018-03-05 | Dual-mode multistage high-power-density instantaneous cooling motor and use method thereof |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120253735A1 (en) * | 2011-03-29 | 2012-10-04 | Searete Llc | Method and apparatus for operating a motor with optimized efficiency |
| TWI455460B (en) * | 2011-12-16 | 2014-10-01 | Ind Tech Res Inst | Electric machine with dual air/water cooling mechanism |
| DK201270179A (en) * | 2012-04-11 | 2013-10-11 | Envision Energy Denmark Aps | Wind turbine with improved cooling |
| CN103390485B (en) * | 2013-07-22 | 2015-12-09 | 浙江宝威电气有限公司 | A kind of strong cold transformer of liquid nitrogen and refrigerating method thereof |
| CN103532345B (en) * | 2013-10-23 | 2015-07-15 | 东南大学 | Superconducting motor with ultra-low loss |
| CN106374682B (en) * | 2016-09-30 | 2018-10-30 | 安徽江淮汽车集团股份有限公司 | A kind of hybrid powder motor cooling means and system |
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- 2018-03-05 CN CN201810180190.8A patent/CN108347132B/en not_active Expired - Fee Related
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| CN108347132A (en) | 2018-07-31 |
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Granted publication date: 20200818 Termination date: 20210305 |