WO2024113661A1 - Motor heat dissipation structure based on deformation heat pipe and manufacturing method therefor - Google Patents

Motor heat dissipation structure based on deformation heat pipe and manufacturing method therefor Download PDF

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Publication number
WO2024113661A1
WO2024113661A1 PCT/CN2023/090421 CN2023090421W WO2024113661A1 WO 2024113661 A1 WO2024113661 A1 WO 2024113661A1 CN 2023090421 W CN2023090421 W CN 2023090421W WO 2024113661 A1 WO2024113661 A1 WO 2024113661A1
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Prior art keywords
heat dissipation
copper wire
motor
wire winding
heat pipe
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PCT/CN2023/090421
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French (fr)
Chinese (zh)
Inventor
尹树彬
汤勇
黄皓熠
张仕伟
赵威
黎洪铭
黄梓滨
余小媚
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广东畅能达科技发展有限公司
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Publication of WO2024113661A1 publication Critical patent/WO2024113661A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to the technical field of motor heat dissipation, and in particular to a motor heat dissipation structure based on a deformation heat pipe and a manufacturing method thereof.
  • the new energy vehicle industry has extremely high requirements for the selection of motors. Compared with other types of motors, the biggest advantage of permanent magnet synchronous motors is that they have higher power density and torque density under the same mass and volume, which can provide the maximum power output and acceleration for new energy vehicles. Therefore, permanent magnet synchronous motors have become the first choice for new energy vehicle motors. However, permanent magnet synchronous motors also have disadvantages. The permanent magnet material on the rotor will produce magnetic decay under high temperature, vibration and overcurrent conditions, making the motor prone to damage. Therefore, heat dissipation is an important factor that restricts the ultimate power of permanent magnet synchronous motors.
  • liquid cooling is the mainstream motor heat dissipation technology.
  • the principle is that the motor copper wire winding transfers heat to the casing through the insulation layer and stator core, and then the heat is dissipated by air or liquid working fluid.
  • the present invention proposes a motor heat dissipation structure based on a deformable heat pipe and a manufacturing method thereof, which significantly improves the heat dissipation efficiency of the overhanging winding and increases the power usage of the motor.
  • a first aspect of an embodiment of the present disclosure provides a motor heat dissipation structure based on a deformation heat pipe, comprising a liquid-cooled casing, a stator core and a copper wire winding, and also comprising a heat dissipation array composed of a plurality of deformation heat pipes arranged in sequence, wherein the stator core is installed in the liquid-cooled casing, the copper wire winding is arranged at both ends of the stator core, the heat dissipation array surrounds the outer surface of the copper wire winding, and the heat dissipation array is respectively arranged in contact with the copper wire winding and the liquid-cooled casing.
  • a thermally conductive interface material is filled between the copper wire winding and the heat dissipation array.
  • a thermally conductive interface material is filled between the liquid cooling housing and the heat dissipation array.
  • the heat dissipation array is in surface contact with the copper wire winding and the liquid cooling housing respectively.
  • the heat dissipation array surrounds the copper wire winding in a circumferential range of 5°-355°.
  • a method for manufacturing a motor heat dissipation structure based on a deformation heat pipe comprises the following steps:
  • Step 1 Obtain the geometric parameters of the copper wire winding and the liquid cooling housing in the motor
  • Step 2 According to the geometric parameters obtained in step 1, the customized parameters and layout parameters of the deformable heat pipe are customized and designed;
  • Step 3 Pre-treat the heat pipe according to geometric parameters and layout parameters, and then deform the heat pipe through an extrusion die and a bending die;
  • Step 4 Arrange the deformable heat pipes in sequence according to the layout parameters to form a heat dissipation array
  • Step 5 Install the heat sink array inside the motor.
  • the geometric parameters include the cross-sectional shape, cross-sectional diameter, thickness of the copper wire winding, and the spacing between the copper wire winding and the liquid cooling housing.
  • the customized parameters include a cross-sectional shape, a bending diameter, and a wrapping angle of the deformable heat pipe.
  • the arrangement parameters include the arrangement quantity of the deformation-changing heat pipes and the spacing between adjacent deformation-changing heat pipes.
  • the present invention has the following advantages:
  • the present invention obtains the geometric parameters of the copper wire winding and the liquid cooling shell in the motor, designs and manufactures a deformable heat pipe that fits the copper wire winding.
  • the deformable heat pipe is extruded and bent according to the internal setting of the motor, and is arranged between the copper wire winding and the liquid cooling shell to form a heat dissipation array.
  • One end of the heat dissipation array contacts the copper wire winding as a heat source, and the other end contacts the liquid cooling shell as a cold source.
  • the ohmic heat generated by the copper wire winding during operation is evenly transferred from the copper wire winding to the liquid cooling shell and taken away.
  • this heat dissipation path increases the contact area between the phase change heat transfer device and the shell and winding, significantly improves the heat dissipation of the winding at the overhang, reduces the motor winding temperature, increases the rated power of the motor, and realizes the lightweight and miniaturization of the motor.
  • the present invention uses a low-cost phase change heat transfer device with higher thermal conductivity to fill the cavity between the casing and the winding, effectively reducing the amount of thermal interface material encapsulated and reducing the heat dissipation cost of the motor.
  • the present invention improves the heat dissipation structure of the motor based on a deformable heat pipe that can be industrially customized and produced.
  • the implementation method is simple, practical and low-cost.
  • FIG1 is a three-dimensional exploded view of a first embodiment of the present invention.
  • FIG2 is a three-dimensional schematic diagram of an assembly of a deformation-changing heat pipe in Embodiment 1 of the present invention.
  • FIG3 is an enlarged view of the cross section in FIG2 ;
  • FIG. 4 is a three-dimensional schematic diagram of a deformation-modifying heat pipe in the first embodiment of the present invention.
  • FIG5 is a three-dimensional schematic diagram of an assembly of a deformation-changing heat pipe in a second embodiment of the present invention.
  • FIG6 is a three-dimensional schematic diagram of a deformation-modifying heat pipe in a second embodiment of the present invention.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • an embodiment of the present invention discloses a motor heat dissipation structure based on a deformable heat pipe, including a liquid-cooled casing 1, a stator core 2 and a copper wire winding 3, and also includes a heat dissipation array composed of a plurality of deformable heat pipes 4 arranged in sequence, wherein the stator core 2 is installed in the liquid-cooled casing 1, and the copper wire winding 3 is arranged at both ends of the stator core 2, and the heat dissipation array surrounds the outer surface of the copper wire winding 3, and the heat dissipation array is respectively arranged in contact with the copper wire winding 3 and the liquid-cooled casing 1.
  • one end of the heat dissipation array is in contact with the copper wire winding 3 serving as a heat source, and the other end is in contact with the liquid cooling shell 1 serving as a cold source.
  • the ohmic heat generated by the copper wire winding 3 during operation is evenly transferred from the copper wire winding 3 to the liquid cooling shell 1 and taken away.
  • the cavity between the liquid cooling housing 1 and the copper wire winding 3 is filled with the low-cost and higher thermal conductivity deformation heat pipe 4, which effectively reduces the potting amount of the thermal interface material and reduces the heat dissipation cost of the motor.
  • thermal conductive interface material 5 is filled between the copper wire winding 3 and the heat dissipation array, and thermal conductive interface material 5 is filled between the liquid cooling shell 1 and the heat dissipation array.
  • thermal conductive interface materials such as (thermal conductive mud, thermal conductive glue, etc.).
  • the heat dissipation array is in surface contact with the copper wire winding 3 and the liquid cooling housing 1, so that the heat transfer path area is larger, thereby fully ensuring the heat dissipation effect of the motor.
  • the circumferential range of the heat dissipation array surrounding the copper wire winding 3 is 5°-355°, and the circumferential range of the heat dissipation array surrounding the copper wire winding 3 is determined according to the cross-sectional shape, cross-sectional diameter and thickness of the copper wire winding 3, ensuring that the contact area between the heat dissipation array and the copper wire winding 3 is as large as possible, thereby fully ensuring the heat dissipation effect of the motor.
  • this embodiment differs from this embodiment and the first embodiment in that multiple sections of deformable heat pipes are circumferentially covered on the overhanging copper wire winding 3 to form a nearly annular heat dissipation array.
  • This embodiment dissipates heat from the overhanging copper wire winding 3 by splicing multiple sections of deformable heat pipes, thereby improving the flexibility of the structure.
  • this method is conducive to heat dissipation of copper wire windings 3 of different shapes.
  • the embodiment of the present invention discloses a method for manufacturing a motor heat dissipation structure based on a deformable heat pipe, which comprises the following steps:
  • Step 1 Obtain geometric parameters of the copper wire winding 3 in the motor and the liquid cooling housing 1;
  • Step 2 According to the geometric parameters obtained in step 1, customized parameters and layout parameters of the deformable heat pipe 4 are customized and designed;
  • Step 3 Pre-treat the heat pipe according to geometric parameters and layout parameters, and then deform the heat pipe through an extrusion die and a bending die;
  • Step 4 Arrange the deformable heat pipes 4 in sequence according to the layout parameters to form a heat dissipation array
  • Step 5 Install the heat sink array inside the motor.
  • the geometric parameters include the cross-sectional shape, cross-sectional diameter, thickness of the copper wire winding 3 and the spacing between the copper wire winding and the liquid cooling housing.
  • the customized parameters include the cross-sectional shape, bending diameter and wrapping angle of the deformable heat pipe 4.
  • the deformable heat pipe 4 is designed according to the geometric parameters of the motor.
  • the cross-sectional shape, bending diameter and wrapping angle of the deformed heat pipe are adapted to the structure inside the motor, which is beneficial to improving the heat dissipation performance.
  • the arrangement parameters include the arrangement quantity of the deformable heat pipes 4 and the spacing between adjacent deformable heat pipes 4.
  • the deformable heat pipes 4 are arranged according to the arrangement parameters so that the arrangement quantity and arrangement spacing of the deformable heat pipes 4 are adapted to the structure inside the motor, which is beneficial to improving the heat dissipation performance.
  • the present invention obtains geometric parameters of the copper wire winding 3 and the liquid cooling shell 1 in the motor, designs and manufactures a deformable heat pipe 4 that fits the copper wire winding 3, and the deformable heat pipe 4 is extruded and bent according to the internal setting of the motor, and the deformable heat pipe 4 is arranged between the copper wire winding 3 and the liquid cooling shell 1 to form a heat dissipation array, one end of the heat dissipation array is in contact with the copper wire winding 3 as a heat source, and the other end is in contact with the liquid cooling shell 1 as a cold source.
  • the ohmic heat generated by the copper wire winding 3 during operation is evenly transferred from the copper wire winding to the liquid cooling shell 1 and taken away.
  • this heat dissipation path increases the contact area between the phase change heat transfer device and the liquid cooling shell 1 and the copper wire winding 3, significantly improves the heat dissipation of the winding at the overhang, reduces the motor winding temperature, increases the rated power of the motor, and realizes the lightweight and miniaturization of the motor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The present invention provides a motor heat dissipation structure based on a deformation heat pipe and a manufacturing method therefor. The motor heat dissipation structure comprises a liquid-cooled housing, a stator core, and copper wire windings, and further comprises a heat dissipation array formed by sequentially arranging a plurality of heat pipes. The stator core is mounted in the liquid-cooled housing, the copper wire windings are provided at two ends of the stator core, the heat dissipation array surrounds the outer surfaces of the copper wire windings, and the heat dissipation array is respectively attached to the copper wire windings and the liquid-cooled housing. The present invention can significantly improve the heat dissipation condition of internal windings of permanent magnet synchronous motors, reduce the temperature of the motor windings, increase the overload running multiple of the motors, and realize miniaturization and high power density of the motors.

Description

一种基于形变热管的电机散热结构及其制造方法A motor heat dissipation structure based on deformation heat pipe and manufacturing method thereof 技术领域Technical Field
本发明涉及电机散热技术领域，具体涉及一种基于形变热管的电机散热结构及其制造方法。The present invention relates to the technical field of motor heat dissipation, and in particular to a motor heat dissipation structure based on a deformation heat pipe and a manufacturing method thereof.
背景技术Background technique
新能源汽车行业对于电机的选择要求极高，与其他类型的电机相比较，在相同质量与体积下永磁同步电机最大优点就是具有较高的功率密度与转矩密度，能够为新能源汽车提供最大的动力输出与加速度。因此永磁同步电机成为新能源汽车电机的首选。但是永磁同步电机也存在缺点，转子上的永磁材料在高温、震动和过流的条件下，会产生磁性衰退的现象，使得电机容易发生损坏。因此，散热是制约永磁同步电机极限功率的重要因素。The new energy vehicle industry has extremely high requirements for the selection of motors. Compared with other types of motors, the biggest advantage of permanent magnet synchronous motors is that they have higher power density and torque density under the same mass and volume, which can provide the maximum power output and acceleration for new energy vehicles. Therefore, permanent magnet synchronous motors have become the first choice for new energy vehicle motors. However, permanent magnet synchronous motors also have disadvantages. The permanent magnet material on the rotor will produce magnetic decay under high temperature, vibration and overcurrent conditions, making the motor prone to damage. Therefore, heat dissipation is an important factor that restricts the ultimate power of permanent magnet synchronous motors.
目前，液冷是主流的电机散热技术，其原理是电机铜线绕组通过绝缘层和定子铁心等将热量传至机壳，再由空气或液态工质将热量耗散。At present, liquid cooling is the mainstream motor heat dissipation technology. The principle is that the motor copper wire winding transfers heat to the casing through the insulation layer and stator core, and then the heat is dissipated by air or liquid working fluid.
现有的液冷仅能实现定子铁心包裹部分的绕组热量耗散。暴露在铁心外部铜线绕组是电机内发热最严重的部分，通常需要浸没在固化导热胶内，绕组则需要先将热量传递至该导热胶，再经过导热胶传递至液冷机壳。由于灌封导热胶本身热导率极低，该散热路径无法实现铁心外部绕组的有效散热，且该部分铜线温度已成为衡量电机是否达到保护温度的重要指标。Existing liquid cooling can only dissipate the heat of the winding wrapped around the stator core. The copper wire winding exposed outside the core is the most seriously heated part of the motor. It usually needs to be immersed in a curing thermal conductive adhesive. The winding needs to transfer the heat to the thermal conductive adhesive first, and then transfer it to the liquid cooling casing through the thermal conductive adhesive. Since the thermal conductivity of the potting thermal conductive adhesive itself is extremely low, this heat dissipation path cannot achieve effective heat dissipation of the winding outside the core, and the temperature of this part of the copper wire has become an important indicator to measure whether the motor has reached the protection temperature.
因此，如何降低悬伸部分绕组温度对于实现电机高效散热与功率提升具有重要意义。Therefore, how to reduce the temperature of the overhanging winding is of great significance for achieving efficient heat dissipation and power improvement of the motor.
发明内容Summary of the invention
针对现有技术的不足，本发明提出了一种基于形变热管的电机散热结构及其制造方法,显著改善悬伸绕组的散热效率，提升电机使用功率。In view of the deficiencies in the prior art, the present invention proposes a motor heat dissipation structure based on a deformable heat pipe and a manufacturing method thereof, which significantly improves the heat dissipation efficiency of the overhanging winding and increases the power usage of the motor.
本公开实施方式的第一方面提供了一种基于形变热管的电机散热结构，包括液冷外壳、定子铁芯以及铜线绕组，还包括若干形变热管依次排列组成的散热阵列，所述定子铁芯安装于液冷外壳内，所述铜线绕组设置于定子铁芯两端，所述散热阵列环绕于铜线绕组外表面，且散热阵列分别贴合铜线绕组以及液冷外壳设置。A first aspect of an embodiment of the present disclosure provides a motor heat dissipation structure based on a deformation heat pipe, comprising a liquid-cooled casing, a stator core and a copper wire winding, and also comprising a heat dissipation array composed of a plurality of deformation heat pipes arranged in sequence, wherein the stator core is installed in the liquid-cooled casing, the copper wire winding is arranged at both ends of the stator core, the heat dissipation array surrounds the outer surface of the copper wire winding, and the heat dissipation array is respectively arranged in contact with the copper wire winding and the liquid-cooled casing.
在本公开的一种实施方式中,所述铜线绕组与散热阵列之间填充有导热界面材料。In one embodiment of the present disclosure, a thermally conductive interface material is filled between the copper wire winding and the heat dissipation array.
在本公开的一种实施方式中,所述液冷外壳与散热阵列之间填充有导热界面材料。In one embodiment of the present disclosure, a thermally conductive interface material is filled between the liquid cooling housing and the heat dissipation array.
在本公开的一种实施方式中,所述散热阵列分别与所述铜线绕组和所述液冷外壳之间为面接触。In one embodiment of the present disclosure, the heat dissipation array is in surface contact with the copper wire winding and the liquid cooling housing respectively.
在本公开的一种实施方式中,所述散热阵列环绕于铜线绕组的圆周范围为5°-355°。In one embodiment of the present disclosure, the heat dissipation array surrounds the copper wire winding in a circumferential range of 5°-355°.
根据本公开实施方式的第二方面，提供一种基于形变热管的电机散热结构制造方法，采用如下步骤：According to a second aspect of the embodiment of the present disclosure, a method for manufacturing a motor heat dissipation structure based on a deformation heat pipe is provided, which comprises the following steps:
步骤1：获取电机内铜线绕组与液冷机壳的几何参数；Step 1: Obtain the geometric parameters of the copper wire winding and the liquid cooling housing in the motor;
步骤2：根据步骤1中获取的几何参数，定制化设计出与形变热管的定制参数和布置参数；Step 2: According to the geometric parameters obtained in step 1, the customized parameters and layout parameters of the deformable heat pipe are customized and designed;
步骤3：根据几何参数和布置参数对热管进行预处理，再通过挤压模具和折弯模具对热管进行形变处理；Step 3: Pre-treat the heat pipe according to geometric parameters and layout parameters, and then deform the heat pipe through an extrusion die and a bending die;
步骤4：根据布置参数将形变热管依次排列组成散热阵列； Step 4: Arrange the deformable heat pipes in sequence according to the layout parameters to form a heat dissipation array;
步骤5：将散热阵列安装于电机内。Step 5: Install the heat sink array inside the motor.
在本公开的一种实施方式中,所述几何参数包括铜线绕组的截面形状、截面直径、厚度以及铜线绕组与液冷机壳间的间距。In one embodiment of the present disclosure, the geometric parameters include the cross-sectional shape, cross-sectional diameter, thickness of the copper wire winding, and the spacing between the copper wire winding and the liquid cooling housing.
在本公开的一种实施方式中，所述定制参数包括形变热管的截面形状、弯折直径以及包裹角度。In one embodiment of the present disclosure, the customized parameters include a cross-sectional shape, a bending diameter, and a wrapping angle of the deformable heat pipe.
在本公开的一种实施方式中，所述布置参数包括形变热管的布置数量和相邻形变热管的间距。In one embodiment of the present disclosure, the arrangement parameters include the arrangement quantity of the deformation-changing heat pipes and the spacing between adjacent deformation-changing heat pipes.
与现有技术相比，本发明具有以下优点：Compared with the prior art, the present invention has the following advantages:
(1)本发明通过获取电机内铜线绕组与液冷机壳的几何参数，设计制造一种贴合铜线绕组的形变热管，形变热管根据电机内部的设置情况进行挤压和弯折，将形变热管设置在铜线绕组和液冷外壳之间形成散热阵列，散热阵列一端与作为热源的铜线绕组相接触，另一端与作为冷源的液冷外壳相接触，基于形变热管高导热率的特性，将铜线绕组在工作时产生的欧姆热从铜线绕组均匀传递至液冷外壳中带走，该散热路径相比传统的电机散热结构，增加了相变传热器件与机壳和绕组的接触面积，显著提升悬伸处绕组的散热情况，降低电机绕组温度，提升电机额定使用功率，实现电机轻量化和微型化。(1) The present invention obtains the geometric parameters of the copper wire winding and the liquid cooling shell in the motor, designs and manufactures a deformable heat pipe that fits the copper wire winding. The deformable heat pipe is extruded and bent according to the internal setting of the motor, and is arranged between the copper wire winding and the liquid cooling shell to form a heat dissipation array. One end of the heat dissipation array contacts the copper wire winding as a heat source, and the other end contacts the liquid cooling shell as a cold source. Based on the high thermal conductivity of the deformable heat pipe, the ohmic heat generated by the copper wire winding during operation is evenly transferred from the copper wire winding to the liquid cooling shell and taken away. Compared with the traditional motor heat dissipation structure, this heat dissipation path increases the contact area between the phase change heat transfer device and the shell and winding, significantly improves the heat dissipation of the winding at the overhang, reduces the motor winding temperature, increases the rated power of the motor, and realizes the lightweight and miniaturization of the motor.
(2)本发明通过价格低廉且热导率更高的相变传热器件填充机壳和绕组间的空腔，有效减少导热界面材料的灌封量，降低了电机散热成本。(2) The present invention uses a low-cost phase change heat transfer device with higher thermal conductivity to fill the cavity between the casing and the winding, effectively reducing the amount of thermal interface material encapsulated and reducing the heat dissipation cost of the motor.
(3)本发明基于可产业化定制生产的形变热管对电机散热结构进行改进，实施方式简单实用，成本低廉。(3) The present invention improves the heat dissipation structure of the motor based on a deformable heat pipe that can be industrially customized and produced. The implementation method is simple, practical and low-cost.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施方式或现有技术中的技术方案，下面将对实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面 描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings in the description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
图1为本发明实施方式一的三维爆炸图；FIG1 is a three-dimensional exploded view of a first embodiment of the present invention;
图2为本发明实施方式一中装配形变热管的三维示意图；FIG2 is a three-dimensional schematic diagram of an assembly of a deformation-changing heat pipe in Embodiment 1 of the present invention;
图3为图2中截面的放大图；FIG3 is an enlarged view of the cross section in FIG2 ;
图4为本发明实施方式一中形变热管的三维示意图。FIG. 4 is a three-dimensional schematic diagram of a deformation-modifying heat pipe in the first embodiment of the present invention.
图5为本发明实施方式二中装配形变热管的三维示意图；FIG5 is a three-dimensional schematic diagram of an assembly of a deformation-changing heat pipe in a second embodiment of the present invention;
图6为本发明实施方式二中形变热管的三维示意图。FIG6 is a three-dimensional schematic diagram of a deformation-modifying heat pipe in a second embodiment of the present invention.
附图标识：1、液冷外壳；2、定子铁芯；3、铜线绕组；4、形变热管；5、导热界面材料。Figure symbols: 1. Liquid cooling shell; 2. Stator core; 3. Copper wire winding; 4. Deformable heat pipe; 5. Thermal conductive interface material.
具体实施方式Detailed ways
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式，都属于本发明保护的范围。The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”、“第四”等仅用于描述目的，而不能理解为指示或暗示相对重要性。 In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
实施方式一Implementation Method 1
参见图1至图4，本发明实施方式公开了一种基于形变热管的电机散热结构，包括液冷外壳1、定子铁芯2以及铜线绕组3，还包括若干形变热管4依次排列组成的散热阵列，所述定子铁芯2安装于液冷外壳1内，所述铜线绕组3设置于定子铁芯2两端，所述散热阵列环绕于铜线绕组3外表面，且散热阵列分别贴合铜线绕组3以及液冷外壳1设置。Referring to Figures 1 to 4, an embodiment of the present invention discloses a motor heat dissipation structure based on a deformable heat pipe, including a liquid-cooled casing 1, a stator core 2 and a copper wire winding 3, and also includes a heat dissipation array composed of a plurality of deformable heat pipes 4 arranged in sequence, wherein the stator core 2 is installed in the liquid-cooled casing 1, and the copper wire winding 3 is arranged at both ends of the stator core 2, and the heat dissipation array surrounds the outer surface of the copper wire winding 3, and the heat dissipation array is respectively arranged in contact with the copper wire winding 3 and the liquid-cooled casing 1.
本实施方式中，散热阵列一端与作为热源的铜线绕组3相接触，另一端与作为冷源的液冷外壳1相接触，基于形变热管4高导热率的特性，将铜线绕组3在工作时产生的欧姆热从铜线绕组3均匀传递至液冷外壳1中带走。In this embodiment, one end of the heat dissipation array is in contact with the copper wire winding 3 serving as a heat source, and the other end is in contact with the liquid cooling shell 1 serving as a cold source. Based on the high thermal conductivity characteristics of the deformation heat pipe 4, the ohmic heat generated by the copper wire winding 3 during operation is evenly transferred from the copper wire winding 3 to the liquid cooling shell 1 and taken away.
在本实施方式中，通过价格低廉且热导率更高的形变热管4填充液冷机壳1和铜线绕组3间的空腔，有效减少导热界面材料的灌封量，降低了电机散热成本。In this embodiment, the cavity between the liquid cooling housing 1 and the copper wire winding 3 is filled with the low-cost and higher thermal conductivity deformation heat pipe 4, which effectively reduces the potting amount of the thermal interface material and reduces the heat dissipation cost of the motor.
在本实施方式中，所述铜线绕组3与散热阵列之间填充有导热界面材料5，所述液冷外壳1与散热阵列之间填充有导热界面材料5，通过导热界面材料如(导热泥、导热胶等)进一步提升电机的散热效果。In this embodiment, thermal conductive interface material 5 is filled between the copper wire winding 3 and the heat dissipation array, and thermal conductive interface material 5 is filled between the liquid cooling shell 1 and the heat dissipation array. The heat dissipation effect of the motor is further improved by thermal conductive interface materials such as (thermal conductive mud, thermal conductive glue, etc.).
在本实施方式中，所述散热阵列分别与所述铜线绕组3和所述液冷外壳1之间为面接触，以使热量传递的路径面积更大，充分保证了电机散热效果。 In this embodiment, the heat dissipation array is in surface contact with the copper wire winding 3 and the liquid cooling housing 1, so that the heat transfer path area is larger, thereby fully ensuring the heat dissipation effect of the motor.
在本实施方式中，所述散热阵列环绕于铜线绕组3的圆周范围为5°-355°，根据铜线绕组3的截面形状、截面直径以及厚度来确定散热阵列环绕铜线绕组3的圆周范围，确保散热阵列与铜线绕组3的接触面积尽可能大，充分保证了电机散热效果。In this embodiment, the circumferential range of the heat dissipation array surrounding the copper wire winding 3 is 5°-355°, and the circumferential range of the heat dissipation array surrounding the copper wire winding 3 is determined according to the cross-sectional shape, cross-sectional diameter and thickness of the copper wire winding 3, ensuring that the contact area between the heat dissipation array and the copper wire winding 3 is as large as possible, thereby fully ensuring the heat dissipation effect of the motor.
实施方式二Implementation Method 2
如图5及图6所示，本实施方式与实施方式一的不同之处在于，多段形变热管沿周向覆盖在悬伸处铜线绕组3上，以围成一近似环状的散热阵列。本实施方式通过多段形变热管拼接对悬伸处铜线绕组3进行散热，提高了结构的灵活性，同时该方法有利于对不同形状的铜线绕组3进行散热处理。As shown in FIG5 and FIG6, the difference between this embodiment and the first embodiment is that multiple sections of deformable heat pipes are circumferentially covered on the overhanging copper wire winding 3 to form a nearly annular heat dissipation array. This embodiment dissipates heat from the overhanging copper wire winding 3 by splicing multiple sections of deformable heat pipes, thereby improving the flexibility of the structure. At the same time, this method is conducive to heat dissipation of copper wire windings 3 of different shapes.
实施方式三Implementation Method 3
本发明实施方式公开了一种基于形变热管的电机散热结构制造方法，采用如下步骤：The embodiment of the present invention discloses a method for manufacturing a motor heat dissipation structure based on a deformable heat pipe, which comprises the following steps:
步骤1：获取电机内铜线绕组3与液冷机壳1的几何参数；Step 1: Obtain geometric parameters of the copper wire winding 3 in the motor and the liquid cooling housing 1;
步骤2：根据步骤1中获取的几何参数，定制化设计出与形变热管4的定制参数和布置参数；Step 2: According to the geometric parameters obtained in step 1, customized parameters and layout parameters of the deformable heat pipe 4 are customized and designed;
步骤3：根据几何参数和布置参数对热管进行预处理，再通过挤压模具和折弯模具对热管进行形变处理；Step 3: Pre-treat the heat pipe according to geometric parameters and layout parameters, and then deform the heat pipe through an extrusion die and a bending die;
步骤4：根据布置参数将形变热管4依次排列组成散热阵列；Step 4: Arrange the deformable heat pipes 4 in sequence according to the layout parameters to form a heat dissipation array;
步骤5：将散热阵列安装于电机内。Step 5: Install the heat sink array inside the motor.
在本实施方式中，所述几何参数包括铜线绕组3的截面形状、截面直径、厚度以及铜线绕组与液冷机壳间的间距，所述定制参数包括形变热管4的截面形状、弯折直径以及包裹角度，形变热管4根据电机的几何参数进行设计，使 得形变的形变热管的截面形状、弯折直径以及包裹角度与电机内的结构相互适配，有利于提高散热性能。In this embodiment, the geometric parameters include the cross-sectional shape, cross-sectional diameter, thickness of the copper wire winding 3 and the spacing between the copper wire winding and the liquid cooling housing. The customized parameters include the cross-sectional shape, bending diameter and wrapping angle of the deformable heat pipe 4. The deformable heat pipe 4 is designed according to the geometric parameters of the motor. The cross-sectional shape, bending diameter and wrapping angle of the deformed heat pipe are adapted to the structure inside the motor, which is beneficial to improving the heat dissipation performance.
在本实施方式中，所述布置参数包括形变热管4的布置数量和相邻形变热管4的间距，形变热管4根据布置参数进行布置，使得形变热管4的布置数量以及布置间距与电机内的结构相互适配，有利于提高散热性能。In this embodiment, the arrangement parameters include the arrangement quantity of the deformable heat pipes 4 and the spacing between adjacent deformable heat pipes 4. The deformable heat pipes 4 are arranged according to the arrangement parameters so that the arrangement quantity and arrangement spacing of the deformable heat pipes 4 are adapted to the structure inside the motor, which is beneficial to improving the heat dissipation performance.
本发明通过获取电机内铜线绕组3与液冷机壳1的几何参数，设计制造一种贴合铜线绕组3的形变热管4，形变热管4根据电机内部的设置情况进行挤压和弯折，将形变热管4设置在铜线绕组3和液冷外壳1之间形成散热阵列，散热阵列一端与作为热源的铜线绕组3相接触，另一端与作为冷源的液冷外壳1相接触，基于形变热管4高导热率的特性，将铜线绕组3在工作时产生的欧姆热从铜线绕组均匀传递至液冷外壳1中带走，该散热路径相比传统的电机散热结构，增加了相变传热器件与液冷外壳1和铜线绕组3的接触面积，显著提升悬伸处绕组的散热情况，降低电机绕组温度，提升电机额定使用功率，实现电机轻量化和微型化。The present invention obtains geometric parameters of the copper wire winding 3 and the liquid cooling shell 1 in the motor, designs and manufactures a deformable heat pipe 4 that fits the copper wire winding 3, and the deformable heat pipe 4 is extruded and bent according to the internal setting of the motor, and the deformable heat pipe 4 is arranged between the copper wire winding 3 and the liquid cooling shell 1 to form a heat dissipation array, one end of the heat dissipation array is in contact with the copper wire winding 3 as a heat source, and the other end is in contact with the liquid cooling shell 1 as a cold source. Based on the high thermal conductivity of the deformable heat pipe 4, the ohmic heat generated by the copper wire winding 3 during operation is evenly transferred from the copper wire winding to the liquid cooling shell 1 and taken away. Compared with the traditional motor heat dissipation structure, this heat dissipation path increases the contact area between the phase change heat transfer device and the liquid cooling shell 1 and the copper wire winding 3, significantly improves the heat dissipation of the winding at the overhang, reduces the motor winding temperature, increases the rated power of the motor, and realizes the lightweight and miniaturization of the motor.
以上所述仅为本发明的较佳实施方式而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (9)

  1. 一种基于形变热管的电机散热结构，包括液冷外壳、定子铁芯以及铜线绕组，其特征在于：还包括若干形变热管依次排列组成的散热阵列，所述定子铁芯安装于液冷外壳内，所述铜线绕组设置于定子铁芯两端，所述散热阵列环绕于铜线绕组外表面，且散热阵列分别贴合铜线绕组以及液冷外壳设置。A motor heat dissipation structure based on a deformation heat pipe includes a liquid cooling shell, a stator core and a copper wire winding, and is characterized in that it also includes a heat dissipation array composed of a plurality of deformation heat pipes arranged in sequence, the stator core is installed in the liquid cooling shell, the copper wire winding is arranged at both ends of the stator core, the heat dissipation array surrounds the outer surface of the copper wire winding, and the heat dissipation array is respectively arranged in contact with the copper wire winding and the liquid cooling shell.
  2. 根据权利要求1所述的基于形变热管的电机散热结构，其特征在于，所述铜线绕组与散热阵列之间填充有导热界面材料。The motor heat dissipation structure based on deformable heat pipe according to claim 1 is characterized in that a thermal conductive interface material is filled between the copper wire winding and the heat dissipation array.
  3. 根据权利要求1所述的基于形变热管的电机散热结构，其特征在于，所述液冷外壳与散热阵列之间填充有导热界面材料。The motor heat dissipation structure based on deformable heat pipe according to claim 1 is characterized in that a thermal conductive interface material is filled between the liquid cooling shell and the heat dissipation array.
  4. 根据权利要求1所述的基于形变热管的电机散热结构，其特征在于，所述散热阵列分别与所述铜线绕组和所述液冷外壳之间为面接触。The motor heat dissipation structure based on deformable heat pipe according to claim 1 is characterized in that the heat dissipation array is in surface contact with the copper wire winding and the liquid cooling shell respectively.
  5. 根据权利要求1所述的基于形变热管的电机散热结构，其特征在于，所述散热阵列环绕于铜线绕组的圆周范围为5°-355°。The motor heat dissipation structure based on deformable heat pipe according to claim 1 is characterized in that the heat dissipation array surrounds the copper wire winding in a circumferential range of 5°-355°.
  6. 一种基于形变热管的电机散热结构制造方法，采用如下步骤：A method for manufacturing a motor heat dissipation structure based on a deformation heat pipe comprises the following steps:
    步骤1：获取电机内铜线绕组与液冷机壳的几何参数；Step 1: Obtain the geometric parameters of the copper wire winding and the liquid cooling housing in the motor;
    步骤2：根据步骤1中获取的几何参数，定制化设计出与形变热管的定制参数和布置参数；Step 2: According to the geometric parameters obtained in step 1, the customized parameters and layout parameters of the deformable heat pipe are customized and designed;
    步骤3：根据几何参数和布置参数对热管进行预处理，再通过挤压模具和折弯模具对热管进行形变处理；Step 3: Pre-treat the heat pipe according to geometric parameters and layout parameters, and then deform the heat pipe through an extrusion die and a bending die;
    步骤4：根据布置参数将形变热管依次排列组成散热阵列；Step 4: Arrange the deformable heat pipes in sequence according to the layout parameters to form a heat dissipation array;
    步骤5：将散热阵列安装于电机内。Step 5: Install the heat sink array inside the motor.
  7. 根据权利要求6所述的基于形变热管的电机散热结构制造方法，其特征在于，所述几何参数包括铜线绕组的截面形状、截面直径、厚度以及铜线绕组与液冷机壳间的间距。 According to the method for manufacturing a motor heat dissipation structure based on a deformable heat pipe according to claim 6, it is characterized in that the geometric parameters include the cross-sectional shape, cross-sectional diameter, thickness of the copper wire winding and the spacing between the copper wire winding and the liquid cooling casing.
  8. 根据权利要求6所述的基于形变热管的电机散热结构制造方法，其特征在于，所述定制参数包括形变热管的截面形状、弯折直径以及包裹角度。The method for manufacturing a motor heat dissipation structure based on a deformable heat pipe according to claim 6 is characterized in that the customized parameters include a cross-sectional shape, a bending diameter, and a wrapping angle of the deformable heat pipe.
  9. 根据权利要求6所述的基于形变热管的电机散热结构制造方法，其特征在于，所述布置参数包括形变热管的布置数量和相邻形变热管的间距。 The method for manufacturing a motor heat dissipation structure based on a deformable heat pipe according to claim 6 is characterized in that the arrangement parameters include the number of deformable heat pipes arranged and the spacing between adjacent deformable heat pipes.
PCT/CN2023/090421 2022-12-01 2023-04-24 Motor heat dissipation structure based on deformation heat pipe and manufacturing method therefor WO2024113661A1 (en)

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JP2010154713A (en) * 2008-12-26 2010-07-08 Sumitomo Electric Ind Ltd Stator for motor and divided stator for motor
CN106532994A (en) * 2016-12-14 2017-03-22 华南理工大学 3D phase-change heat pipe technology-based high-heat-conductivity motor stator assembly for vehicle
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