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CN107800235B - A high power density permanent magnet motor liquid-cooled self-circulation casing - Google Patents

A high power density permanent magnet motor liquid-cooled self-circulation casing Download PDF

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Publication number
CN107800235B
CN107800235B CN201711238030.6A CN201711238030A CN107800235B CN 107800235 B CN107800235 B CN 107800235B CN 201711238030 A CN201711238030 A CN 201711238030A CN 107800235 B CN107800235 B CN 107800235B
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China
Prior art keywords
motor
liquid
casing
permanent magnet
shell
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Expired - Fee Related
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CN201711238030.6A
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Chinese (zh)
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CN107800235A (en
Inventor
陶大军
郭成光
吕飞
杨敬沫
窦庆鹏
吴建晓
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Harbin University of Science and Technology
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Harbin University of Science and Technology
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Priority to CN201711238030.6A priority Critical patent/CN107800235B/en
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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
    • 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
    • H02K9/19—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/30—Reducing waste in manufacturing processes; Calculations of released waste quantities
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

A novel liquid cooling self-circulation shell of a high-power density permanent magnet motor belongs to the technical field of motors. The technical key points of the invention are as follows: the cooling device comprises a motor outer shell, an intermediate layer and a motor inner shell, wherein the three parts are coaxially arranged from outside to inside, and two ends of the three parts are connected through annular baffles to form a cooling chamber; the upper part of the middle layer is provided with an upper arc-shaped notch, the edge of the upper arc-shaped notch is provided with a baffle plate, an evaporation chamber is formed between the baffle plate and the motor inner shell as well as between the baffle plate and the motor outer shell, and the lower part of the middle layer is provided with a lower arc-shaped notch; the upper part of the motor shell is provided with a liquid injection pipe, the lower part of the motor shell is provided with a liquid discharge pipe, and cooling liquid is injected into the cooling cavity through the liquid injection pipe. The invention effectively solves the problems of energy waste and inconvenient transportation and disassembly caused by the need of external water source and water circulation power supply due to poor heat dissipation effect and high material cost of the traditional liquid cooling high-power density permanent magnet motor shell in a closed environment.

Description

Liquid cooling self-circulation casing of high-power density permanent magnet motor
Technical Field
The invention relates to a liquid cooling shell of a permanent magnet motor, in particular to a novel liquid cooling self-circulation shell of a high-power density permanent magnet motor, and belongs to the technical field of motors.
Background
In a closed environment, a traditional water cooling system of a high-power density permanent magnet motor circulates cooling water by installing a water pump for providing power outside a shell of the high-power density permanent magnet motor, and the traditional water cooling system usually needs an external heat dissipation device. The power pump and the heat dissipating device not only increase the running cost of the motor and cause energy waste, but also limit the service performance and the service life of the shell of the high-power density permanent magnet motor, and hardly meet the requirements of energy conservation and environmental protection of the water cooling system of the high-power density permanent magnet motor in a closed environment.
Because the traditional cooling system in the closed environment needs an external power pump and a heat dissipation device, the disassembly and the transportation of the shell of the permanent magnet motor with high power density are inconvenient.
Disclosure of Invention
The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
In view of the above, the present invention provides a novel high power density permanent magnet motor liquid cooling self-circulation casing to at least solve the problems of high operation cost, resource waste, and inconvenience in disassembly and transportation of the high power density permanent magnet motor casing due to the existence of an external power pump and a heat dissipating device in a closed environment.
The invention provides a novel liquid cooling self-circulation shell of a high-power density permanent magnet motor, which comprises a motor outer shell, an intermediate layer and a motor inner shell, wherein the three parts are coaxially arranged from outside to inside, and two ends of the three parts are connected through an annular baffle plate to form a cooling cavity; the upper part of the middle layer is provided with an upper arc-shaped notch, the edge of the upper arc-shaped notch is provided with a baffle plate, an evaporation chamber is formed between the baffle plate and the motor inner shell as well as between the baffle plate and the motor outer shell, and the lower part of the middle layer is provided with a lower arc-shaped notch; the liquid injection pipe is arranged on the upper portion of the motor shell, the liquid discharge pipe is arranged on the lower portion of the motor shell, the installation position of the liquid injection pipe corresponds to the upper circular arc-shaped notch, the installation position of the liquid discharge pipe corresponds to the lower circular arc-shaped notch, and cooling liquid is injected into the cooling cavity through the liquid injection pipe.
In the invention, the middle layer divides the cooling liquid into an inner layer and an outer layer, thereby accelerating the cooling circulation of the liquid. The partition plate is contacted with the liquid level of the cooling liquid, so that the volume of the evaporation chamber is increased, the evaporation area of the liquid is increased, and the inner-layer liquid can only evaporate after absorbing heat and cannot directly flow to the outer layer. The lower arc-shaped notch at the lower part of the middle layer is communicated with the motor outer shell and the motor inner shell, so that the liquid at two sides of the middle layer is kept at the same height, and the liquid can be effectively recycled.
Further: the motor outer shell is made of an aluminum alloy material, aluminum radiating fins are arranged outside the motor outer shell, the motor inner shell is made of an aluminum material, the middle layer is made of an aluminum alloy material, and an insulating and heat-insulating layer is coated on the middle layer. By the arrangement, the material cost is reduced, and the heat insulation function is realized, so that the evaporation rate of liquid is increased.
Further: the upper part of the motor shell is provided with a pressure detection pipe, the mouth of the pressure detection pipe is provided with a pressure detection valve, and the installation position of the pressure detection pipe corresponds to the upper circular arc-shaped notch. The pressure detecting valve is used for detecting the pressure in the shell, and the pressure detecting valve is opened when the pressure in the shell reaches a certain value, so that the shell is effectively prevented from deforming.
Further: the aluminum heat dissipation fins are hollow structures. By the arrangement, material cost is saved, heat dissipation area of the shell is increased, and cooling time of liquid is shortened.
Further: the axial distance between the motor inner shell and the middle layer is equal to the axial distance between the motor outer shell and the middle layer.
Further: the bottom of the motor shell is provided with supporting feet. The arrangement is beneficial to the stability of the device.
Further: the mouth of the liquid injection pipe is provided with a pipe cover, and the mouth of the liquid discharge pipe is provided with a pipe plug. So set up, convenient to use.
Further: the annular baffle is made of metal materials. By the arrangement, the material cost is saved.
Further: the end covers are arranged at two ends of the liquid cooling self-circulation shell of the novel high-power density permanent magnet motor.
The beneficial effects are that:
the invention injects a certain amount of cooling liquid into the shell, and divides the cooling liquid into an inner layer and an outer layer by the middle layer. The inner layer liquid is heated and then quickly evaporated in an evaporating chamber formed by the partition plate, the motor inner shell and the motor outer shell, the motor outer shell with relatively low upper layer temperature is encountered to be liquefied, and the outer layer liquid flows into the outer layer along the inner wall of the annular motor outer shell. The invention effectively solves the problems of energy waste and inconvenient transportation and disassembly caused by the need of external water source and water circulation power supply due to poor heat dissipation effect and high material cost of the traditional liquid cooling high-power density permanent magnet motor shell in a closed environment.
Drawings
FIG. 1 is a five eighth cross-sectional view of a novel high power density permanent magnet motor liquid cooled self-circulation housing of the present invention;
FIG. 2 is a side cross-sectional view of one half of a liquid cooled self-circulating housing of a novel high power density permanent magnet motor according to the present invention;
FIG. 3 is a front cross-sectional view of one half of a liquid cooled self-circulating housing of a novel high power density permanent magnet motor according to the present invention;
FIG. 4 is a cross-sectional view of the internal structure of a liquid-cooled self-circulating casing of a novel high-power density permanent magnet motor according to the present invention;
in the figure: 1, a motor housing; 2, an inner shell of the motor; 3, an intermediate layer; 4 aluminum heat dissipation fins; 5 a partition board; 6, end covers; 7, a liquid injection pipe; 8, a pipe cover; 9, a pressure detecting tube; 10, detecting a pressure valve; 11 liquid discharge pipes; 12 pipe plugs; 13 supporting feet; 14 lower arc-shaped cuts; 15 evaporation chambers; 16 annular baffles.
Detailed Description
Exemplary embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made in order to achieve the developer's specific goals, such as compliance with system-and business-related constraints, and that these constraints will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.
It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, while other details not greatly related to the present invention are omitted.
Examples: the embodiment shown in fig. 1-4 provides a novel high-power density permanent magnet motor liquid cooling self-circulation shell, which comprises a motor shell 1, an intermediate layer 3 and a motor inner shell 2, wherein the three parts are coaxially arranged from outside to inside, two ends of the three parts are connected through an annular baffle 16 to form a cooling cavity, the intermediate layer divides cooling liquid into an inner layer and an outer layer, the inner layer liquid is heated and rapidly evaporated into gas in an evaporation chamber 15, and the gas is heated by the inner wall of the motor shell 1 with relatively low temperature, liquefied into liquid and flows to the outer layer along the inner wall, so that the cooling circulation of the liquid is accelerated; the upper part of the middle layer 3 is provided with an upper arc-shaped notch, the edge of the upper arc-shaped notch is provided with a baffle plate 5, an evaporation chamber 15 is formed between the baffle plate 5 and the motor inner shell 2 and between the baffle plate 5 and the motor outer shell 1, and the baffle plate is contacted with the liquid level of cooling liquid, so that the volume of the evaporation chamber is increased, the evaporation area of liquid is increased, the inner layer liquid can only evaporate after absorbing heat and can not directly flow to the outer layer, the lower part of the middle layer 3 is provided with a lower arc-shaped notch 14, and the lower arc-shaped notch at the lower part of the middle layer is communicated with the motor outer shell and the motor inner shell, so that the liquid at two sides of the middle layer is kept at the same height, and the liquid can be effectively recycled; the upper part of the motor shell 1 is provided with a liquid injection pipe 7, the lower part of the motor shell 1 is provided with a liquid discharge pipe 11, the installation position of the liquid injection pipe 7 corresponds to the upper circular arc-shaped notch, the installation position of the liquid discharge pipe 11 corresponds to the lower circular arc-shaped notch 14, and cooling liquid is injected into the cooling cavity through the liquid injection pipe 7; the motor outer shell 1 is made of an aluminum alloy material, aluminum heat dissipation fins 4 are arranged outside the motor outer shell, the motor inner shell 2 is made of an aluminum material, the middle layer 3 is made of an aluminum alloy material, and an insulating and heat-insulating layer is coated on the middle layer 3. By the arrangement, the material cost is reduced, and the heat insulation function is realized, so that the evaporation rate of liquid is increased. The upper part of the motor shell 1 is provided with a pressure detection tube 9, the orifice of the pressure detection tube 9 is provided with a pressure detection valve 10, and the installation position of the pressure detection tube 9 corresponds to the upper arc-shaped notch. The pressure detecting valve is used for detecting the pressure in the shell, and the pressure detecting valve is opened when the pressure in the shell reaches a certain value, so that the shell is effectively prevented from deforming. The aluminum heat dissipation fins 4 are hollow structures. By the arrangement, material cost is saved, heat dissipation area of the shell is increased, and cooling time of liquid is shortened. The axial distance between the motor inner shell 2 and the middle layer 3 is equal to the axial distance between the motor outer shell 1 and the middle layer 3. The bottom of the motor housing 1 is provided with supporting feet 13. The arrangement is beneficial to the stability of the device. The mouth of the liquid injection pipe 7 is provided with a pipe cover 8, and the mouth of the liquid discharge pipe 11 is provided with a pipe plug 12. So set up, convenient to use. The annular baffle 16 is made of a metal material. The end covers 6 are arranged at two ends of the liquid cooling self-circulation shell of the novel high-power density permanent magnet motor.
Although the embodiments of the present invention are described above, the present invention is not limited to the embodiments adopted for the purpose of facilitating understanding of the technical aspects of the present invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the core technical solution disclosed in the present invention, but the scope of protection defined by the present invention is still subject to the scope defined by the appended claims.

Claims (7)

1.一种高功率密度永磁电机液冷自循环机壳，其特征在于：包括电机外壳(1)、中间层(3)和电机内壳(2)三部分，且此三部分由外至内同轴放置，此三部分的两端均通过环形挡板(16)连接构成冷却腔室；所述中间层(3)的上部设置有上圆弧形切口，上圆弧形切口的边缘安装有隔板(5)，隔板(5)与电机内壳(2)、电机外壳(1)之间形成蒸发室(15)，所述中间层(3)的下部设置有下圆弧形切口(14)；所述电机外壳(1)上部安装有注液管(7)，电机外壳(1)下部安装有排液管(11)，注液管(7)的安装位置与上圆弧形切口对应，排液管(11)的安装位置与下圆弧形切口(14)对应，冷却液通过注液管(7)注入冷却腔室内；1. A high power density permanent magnet motor liquid-cooled self-circulation casing, which is characterized by: including three parts: a motor casing (1), an intermediate layer (3) and a motor inner casing (2), and these three parts extend from the outside to the Placed coaxially inside, the two ends of these three parts are connected by annular baffles (16) to form a cooling chamber; the upper part of the middle layer (3) is provided with an upper arc-shaped cutout, and the edge of the upper arc-shaped cutout is installed There is a partition (5). An evaporation chamber (15) is formed between the partition (5), the motor inner shell (2) and the motor outer shell (1). The lower part of the middle layer (3) is provided with a lower arc-shaped cutout. (14); A liquid injection pipe (7) is installed on the upper part of the motor casing (1), and a drain pipe (11) is installed on the lower part of the motor casing (1). The installation position of the liquid injection pipe (7) is in line with the upper arc shape. The installation position of the drain pipe (11) corresponds to the lower arc-shaped cut (14), and the coolant is injected into the cooling chamber through the liquid injection pipe (7); 向机壳内注入冷却液，并用中间层将冷却液分为内外两层，内层液体受热后在隔板与电机内壳和电机外壳构成的蒸发室快速蒸发，遇到上层温度相对较低的电机外壳而液化，并沿着环形电机外壳内壁流入外层，由于机壳内外层压强相同，外层液体会通过中间层下部的下圆弧型切口流入内层补充内层液体，实现液体的自循环；Inject coolant into the casing, and use an intermediate layer to divide the coolant into inner and outer layers. After being heated, the liquid in the inner layer quickly evaporates in the evaporation chamber formed by the partition, the inner shell of the motor, and the outer shell of the motor. When encountering the relatively low temperature of the upper layer The motor casing is liquefied and flows into the outer layer along the inner wall of the annular motor casing. Since the pressure between the inner and outer layers of the casing is the same, the outer liquid will flow into the inner layer through the lower arc-shaped incision in the lower part of the middle layer to supplement the inner layer of liquid and realize the automatic dissolution of the liquid. cycle; 所述电机外壳(1)是铝合金材料，外面设有铝质散热翅(4)，电机内壳(2)是铝质材料，中间层(3)是铝合金材料，中间层(3)上涂有绝缘隔热层；The motor casing (1) is made of aluminum alloy material, with aluminum heat dissipation fins (4) on the outside. The motor inner casing (2) is made of aluminum material, and the middle layer (3) is made of aluminum alloy material. Coated with thermal insulation; 所述电机外壳(1)上部安装有检压管(9)，检压管(9)的管口设置有检压阀门(10)，检压管(9)的安装位置与上圆弧形切口对应。A pressure detection pipe (9) is installed on the upper part of the motor casing (1), and a pressure detection valve (10) is provided at the mouth of the pressure detection pipe (9). The installation position of the pressure detection pipe (9) is consistent with the upper arc-shaped incision. correspond. 2.根据权利要求1所述的一种高功率密度永磁电机液冷自循环机壳，其特征在于：所述铝质散热翅(4)是空心结构。2. A liquid-cooled self-circulating casing of a high-power-density permanent magnet motor according to claim 1, characterized in that: the aluminum heat dissipation fins (4) are of hollow structure. 3.根据权利要求1或2所述的一种高功率密度永磁电机液冷自循环机壳，其特征在于：所述电机内壳(2)与中间层(3)之间的轴向间距和电机外壳(1)与中间层(3)之间的轴向间距相等。3. A high power density permanent magnet motor liquid-cooled self-circulation casing according to claim 1 or 2, characterized in that: the axial spacing between the motor inner shell (2) and the middle layer (3) It is equal to the axial distance between the motor housing (1) and the middle layer (3). 4.根据权利要求1所述的一种高功率密度永磁电机液冷自循环机壳，其特征在于：所述电机外壳(1)的底部设置有支撑脚(13)。4. A high power density permanent magnet motor liquid-cooled self-circulation casing according to claim 1, characterized in that: the bottom of the motor casing (1) is provided with supporting feet (13). 5.根据权利要求1或4所述的一种高功率密度永磁电机液冷自循环机壳，其特征在于：所述注液管(7)的管口设置有管盖(8)，排液管(11)的管口设置有管塞(12)。5. A high power density permanent magnet motor liquid-cooled self-circulation casing according to claim 1 or 4, characterized in that: the nozzle of the liquid injection pipe (7) is provided with a pipe cover (8), and the discharge pipe The pipe opening of the liquid pipe (11) is provided with a pipe plug (12). 6.根据权利要求1所述的一种高功率密度永磁电机液冷自循环机壳，其特征在于：所述环形挡板(16)采用金属材料制成。6. A liquid-cooled self-circulating casing of a high-power-density permanent magnet motor according to claim 1, characterized in that: the annular baffle (16) is made of metal material. 7.根据权利要求1所述的一种高功率密度永磁电机液冷自循环机壳，其特征在于：所述一种高功率密度永磁电机液冷自循环机壳的两端安装有端盖(6)。7. A high power density permanent magnet motor liquid-cooled self-circulation casing according to claim 1, characterized in that: the two ends of the high power density permanent magnet motor liquid-cooled self-circulation casing are equipped with end Cover(6).
CN201711238030.6A 2017-11-30 2017-11-30 A high power density permanent magnet motor liquid-cooled self-circulation casing Expired - Fee Related CN107800235B (en)

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CN102820738A (en) * 2012-08-17 2012-12-12 中国科学院电工研究所 Spray type motor stator evaporative cooling system
CN103280926A (en) * 2013-05-06 2013-09-04 中国科学院电工研究所 Clamping stator evaporative cooling device
CN103595173A (en) * 2013-10-24 2014-02-19 北京交通大学 Evaporative cooling type metallic shield for end portion of turbonator
CN103986280A (en) * 2014-03-21 2014-08-13 浙江润祁节能科技有限公司 Microchannel type motor thermal module cooler
CN104065211A (en) * 2014-06-14 2014-09-24 中国科学院电工研究所 A self-circulating evaporative cooling disc motor with iron core
CN205791872U (en) * 2016-05-10 2016-12-07 江苏齐利得化工科技有限公司 motor cooling self-circulation system
CN206247927U (en) * 2016-10-20 2017-06-13 北京空间飞行器总体设计部 A kind of three-dimensional integrated structure vapor chamber heat-pipe radiator
CN207442603U (en) * 2017-11-30 2018-06-01 哈尔滨理工大学 A kind of novel high-power density permanent magnet motor liquid-cooling self-circulation casing

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