WO2024087563A1 - 一种具有防短路结构的相变齿形带散热电机 - Google Patents

一种具有防短路结构的相变齿形带散热电机 Download PDF

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Publication number
WO2024087563A1
WO2024087563A1 PCT/CN2023/091404 CN2023091404W WO2024087563A1 WO 2024087563 A1 WO2024087563 A1 WO 2024087563A1 CN 2023091404 W CN2023091404 W CN 2023091404W WO 2024087563 A1 WO2024087563 A1 WO 2024087563A1
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Prior art keywords
toothed belt
insulator
motor
heat dissipation
motor housing
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PCT/CN2023/091404
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English (en)
French (fr)
Inventor
尹树彬
赵威
汤勇
张仕伟
黄梓滨
余小媚
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广东畅能投资控股有限公司
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Publication of WO2024087563A1 publication Critical patent/WO2024087563A1/zh

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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
    • H02K5/08—Insulating casings
    • 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
    • H02K9/22—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

Definitions

  • the utility model belongs to the technical field of motor heat dissipation, and in particular relates to a phase-change toothed belt heat dissipation motor with an anti-short circuit structure.
  • the inventor bent the phase-change ultra-thin device into a toothed belt, installed the toothed belt between the overhang winding and the water-cooled casing, so that the tooth roots of the toothed belt contacted the overhang winding and the tooth tops contacted the casing, thereby quickly conducting the heat of the overhang winding to the water-cooled casing through the toothed belt to achieve heat dissipation.
  • the shell of the phase change device is usually made of metal, and its metallic properties make it easy for electrical conductivity to occur between the overhanging winding and the water-cooling housing, leading to accidents such as current breakdown or short circuit.
  • the purpose of the utility model is to provide a phase change toothed belt heat dissipation motor with an anti-short circuit structure, which has high heat dissipation efficiency, is not easy to generate heat accumulation, and can avoid Avoid short circuit accidents.
  • a phase-change toothed belt heat dissipation motor with an anti-short-circuit structure comprises a cantilever winding and a motor housing, a toothed belt formed by bending an ultra-thin phase-change device is arranged between the cantilever winding and the motor housing, the toothed belt comprises a plurality of tooth roots and tooth tops which are staggered and spliced in sequence to form a closed loop, each tooth root of the toothed belt abuts against the cantilever winding, an insulator is arranged between each tooth top of the toothed belt and the motor housing, and two ends of each insulator are respectively tightly fitted with the corresponding tooth top of the toothed belt and the motor housing.
  • the insulator width is smaller than the tooth tip width of the toothed belt.
  • the insulator is U-shaped, and the U-shaped insulator is tightly buckled on the tooth top of the toothed belt.
  • a heat conductive material is coated between the insulator and the corresponding toothed belt tooth tops.
  • the thermally conductive material includes thermally conductive silicone grease and thermally conductive mud.
  • the insulator is made of ceramic or polymer insulating material.
  • the motor housing is a water-cooled housing, an oil-cooled housing or an air-cooled housing.
  • an insulator is set between each tooth top of the toothed belt and the motor housing.
  • the metal shell of the toothed belt does not directly contact the motor housing through the separation of the insulator, thereby avoiding the conduction between the metal shell of the toothed belt and the motor housing, effectively preventing accidents such as current breakdown or short circuit.
  • the two ends of each insulator are tightly fitted with the corresponding tooth top of the toothed belt and the motor housing, so that the heat generated by the overhanging winding is first taken away by the tooth root of the phase change toothed belt, and then transferred to the insulator through the tooth top of the toothed belt, and then transferred to the motor housing through the insulator for heat dissipation.
  • the heat dissipation path has a small thermal resistance and a good heat dissipation effect. After the insulator with an anti-short circuit structure is set, the safe operation of the motor is guaranteed. When the heat transfer efficiency is slightly reduced, efficient heat transfer can be achieved through the phase change toothed belt. Even if the motor runs for a long time, it is not easy to generate heat accumulation, which extends the service life of the motor.
  • FIG1 is a schematic diagram of the planar structure of a phase-change toothed belt heat dissipation motor with an anti-short circuit structure according to the present invention.
  • FIG. 2 is an enlarged schematic diagram of point H in FIG. 1 .
  • a phase-change toothed belt heat dissipation motor with an anti-short-circuit structure includes a cantilever winding 4 and a motor housing 1.
  • a toothed belt 3 formed by bending an ultra-thin phase change device is provided between the cantilever winding 4 and the motor housing 1.
  • the toothed belt 3 includes a plurality of tooth roots and tooth tops that are staggered and spliced in sequence to form a closed loop. Each tooth root of the toothed belt 3 abuts against the cantilever winding 4.
  • An insulator 2 is provided between each tooth top of the toothed belt 3 and the motor housing 1. The two ends of each insulator 2 are tightly fitted with the corresponding tooth top of the toothed belt 3 and the motor housing 1, respectively.
  • the water-cooled shell of the water-cooled motor is not in direct contact with the motor suspension winding 4, and the heat generated by the motor suspension winding 4 can only rely on long-distance heat conduction, and the heat dissipation effect is not satisfactory.
  • the inventor conceived of bending the phase-change ultra-thin device into an annular toothed belt 3, installing the toothed belt 3 between the suspension winding 4 and the water-cooled shell, so that the tooth roots of the toothed belt 3 are in contact with the suspension winding 4, and the tooth tops are in contact with the shell, so that the heat of the suspension winding 4 is quickly conducted to the water-cooled shell through the toothed belt 3 to achieve efficient heat dissipation.
  • the phase-change ultra-thin device of the prior art usually has a metal shell.
  • the metal shell contacts the inner wall of the motor shell 1, it is easy to be conductive, resulting in accidents such as current breakdown or short circuit, which poses a safety hazard.
  • the inventors set an insulator 2 between each tooth top of the toothed belt 3 and the motor housing 1.
  • the insulator 2 separates the metal shell of the toothed belt 3 from directly contacting the motor housing 1, thereby avoiding the conduction between the metal shell of the toothed belt 3 and the motor housing 1, effectively preventing accidents such as current breakdown or short circuit.
  • the tooth tops of the phase-change toothed belt 3 and the motor housing 1 fit tightly together, so that the heat generated by the overhang winding 4 is first taken away by the tooth roots of the phase-change toothed belt 3, and then transferred to the insulator 2 through the tooth tops of the toothed belt 3, and then transferred to the motor housing 1 through the insulator 2 for heat dissipation.
  • the heat dissipation path has a small thermal resistance and a good heat dissipation effect. After the insulator 2 with an anti-short-circuit structure is set, the operation safety of the motor is guaranteed. When the heat transfer efficiency is slightly reduced, efficient heat transfer can be achieved through the phase-change toothed belt 3. Even if the motor runs for a long time, it is not easy to generate heat accumulation, which extends the service life of the motor.
  • the tooth tops and tooth roots of the toothed belt 3 and the cross-section of the insulator 2 are all arc-shaped, and the insulator 2 is U-shaped.
  • the insulator 2 can be closely fitted with the tooth tops of the toothed belt 3 and the inner wall of the motor housing 1, respectively, and the tooth roots of the toothed belt 3 can be closely fitted with the overhanging winding 4.
  • the full contact between the insulator 2, the toothed belt 3 and the motor housing 1 can avoid the occurrence of contact gaps during the vibration of the motor, thereby greatly reducing the contact thermal resistance and improving the thermal conductivity efficiency.
  • the U-shaped insulator 2 is tightly buckled on the tooth top of the toothed belt 3.
  • the width of the insulator 2 is smaller than the width of the tooth top of the toothed belt 3.
  • the U-shaped structure enables the insulator 2 to be more firmly installed on the toothed belt 3, is not easy to get loose, and reduces the probability of failure.
  • a heat-conducting material is coated between the insulator 2 and the corresponding tooth top of the toothed belt 3 to ensure that when the insulator 2 is buckled onto the tooth top of the toothed belt 3 , the insulator 2 is in full contact with the inner wall of the motor housing 1 .
  • the heat-conducting material includes heat-conducting silicone grease and heat-conducting mud.
  • the insulator 2 is made of ceramic or polymer insulating material.
  • the motor housing 1 is a water-cooled housing, an oil-cooled housing or an air-cooled housing.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

本实用新型涉及一种具有防短路结构的相变齿形带散热电机，包括悬伸绕组与电机外壳，悬伸绕组与电机外壳之间设有由超薄相变器件弯折而成的齿形带，齿形带包括多个依次交错拼接形成闭环的齿根和齿顶，齿形带的每个齿根均抵接于悬伸绕组，齿形带的每个齿顶与电机外壳之间均设有绝缘体，每个绝缘体两端分别与对应的齿形带齿顶和电机外壳紧密贴合。通过绝缘体的隔断，齿形带的金属壳体不直接接触电机外壳，避免齿形带的金属壳体和电机外壳之间的导电，有效防止发生电流击穿或短路等事故。通过每个绝缘体两端分别与对应的齿形带齿顶和电机外壳紧密贴合，散热路径热阻较小，散热效果较好。电机即使长期运行也不容易产生热量堆积，延长电机的使用寿命。

Description

一种具有防短路结构的相变齿形带散热电机 技术领域
本实用新型属于电机散热技术领域，具体涉及一种具有防短路结构的相变齿形带散热电机。
背景技术
电机在电动汽车、机床等众多机械领域均发挥着重要作用，随着人们生活节奏和工业发展节奏的逐渐加快，电机的运转速度和性能需求也成为当下不可忽视的问题。当电机运转速度越来越快，电机线圈绕组所要承受的电流也在不断增长，小型化时代又要求电机在有限的空间之下能处理更为极端的工况，而电流的增大就将导致发热量的平方级增长，从而使线圈绕组甚至是电机整体陷入过热状态，从而降低电机使用寿命甚至出现安全事故。
传统的油冷、水冷甚至是风冷对电机的散热效率均是有限，以水冷电机为例，水冷电机的水冷外壳无法与电机悬伸绕组直接接触，仅依靠远距离导热很难降低热集中位置的高温。而相变传热便是解决这一问题的重要方案。
发明人通过将相变超薄器件弯折成齿形带，将齿形带安装在悬伸绕组与水冷外壳之间，使齿形带的齿根与悬伸绕组接触，齿顶与外壳接触，从而便可以将悬伸绕组的热量通过齿形带快速导至水冷外壳从而实现散热。
然而相变器件的壳体通常由金属制成，其金属特性使得悬伸绕组与水冷外壳之间容易出现导电状况，导致发生电流击穿或短路等事故。
因此，有必要研发一种能够避免发生短路事故的高效散热电机。
实用新型内容
针对现有技术中存在的技术问题，本实用新型的目的是：提供一种具有防短路结构的相变齿形带散热电机，散热效率高，不容易产生热量堆积，能够避 免发生短路事故。
本实用新型目的通过以下技术方案实现：
一种具有防短路结构的相变齿形带散热电机，包括悬伸绕组与电机外壳，悬伸绕组与电机外壳之间设有由超薄相变器件弯折而成的齿形带，齿形带包括多个依次交错拼接形成闭环的齿根和齿顶，齿形带的每个齿根均抵接于悬伸绕组，齿形带的每个齿顶与电机外壳之间均设有绝缘体，每个绝缘体两端分别与对应的齿形带齿顶和电机外壳紧密贴合。
进一步，绝缘体宽度小于齿形带的齿顶宽度。
进一步，绝缘体为U形，U形绝缘体紧密扣接于齿形带的齿顶。
进一步，绝缘体与对应的齿形带齿顶之间涂有导热材料。
进一步，导热材料包括导热硅脂和导热泥。
进一步，绝缘体由陶瓷或高分子绝缘材料制成。
进一步，电机外壳为水冷外壳、油冷外壳或风冷外壳。
与现有技术相比，本实用新型具有以下有益效果：
为了防止发生电流击穿或短路等事故，在齿形带的每个齿顶与电机外壳之间均设置绝缘体，通过绝缘体的隔断，使齿形带的金属壳体不直接接触电机外壳，从而避免了齿形带的金属壳体和电机外壳之间的导电，有效防止发生电流击穿或短路等事故。通过每个绝缘体两端分别与对应的齿形带齿顶和电机外壳紧密贴合，使得悬伸绕组产生的热量首先通过相变齿形带的齿根带走，进而通过齿形带齿顶传递到绝缘体，再通过绝缘体传递到电机外壳进行散热，散热路径热阻较小，散热效果较好。设置了防短路结构的绝缘体后，保证了电机的运行安全，在传热效率稍微降低的情况下，能够通过相变齿形带实现高效传热。电机即使长期运行也不容易产生热量堆积，延长电机的使用寿命。
附图说明
图1为本实用新型具有防短路结构的相变齿形带散热电机的平面结构示意图。
图2为图1中H处放大示意图。
图中：
1-电机外壳，2-绝缘体，3-齿形带，4-悬伸绕组。
具体实施方式
下面对本实用新型作进一步详细的描述。
如图1、图2所示，一种具有防短路结构的相变齿形带散热电机，包括悬伸绕组4与电机外壳1，悬伸绕组4与电机外壳1之间设有由超薄相变器件弯折而成的齿形带3，齿形带3包括多个依次交错拼接形成闭环的齿根和齿顶，齿形带3的每个齿根均抵接于悬伸绕组4，齿形带3的每个齿顶与电机外壳1之间均设有绝缘体2，每个绝缘体2两端分别与对应的齿形带3齿顶和电机外壳1紧密贴合。
现有技术中，水冷电机的水冷外壳并不与电机悬伸绕组4直接接触，电机悬伸绕组4产生的热量仅能依靠远距离导热，散热效果不尽如意。为了解决这一问题，发明人构思通过将相变超薄器件弯折成环状的齿形带3，将齿形带3安装在悬伸绕组4与水冷外壳之间，使齿形带3的齿根与悬伸绕组4接触，齿顶与外壳接触，从而使悬伸绕组4的热量通过齿形带3快速导至水冷外壳来实现高效散热。然而，现有技术的相变超薄器件通常具有金属壳体，当金属壳体与电机外壳1内壁之间接触时容易出现导电状况，导致发生电流击穿或短路等事故，存在安全隐患。
为了防止发生电流击穿或短路等事故，发明人在齿形带3的每个齿顶与电机外壳1之间均设置绝缘体2，通过绝缘体2的隔断，使齿形带3的金属壳体不直接接触电机外壳1，从而避免了齿形带3的金属壳体和电机外壳1之间的导电，有效防止发生电流击穿或短路等事故。通过每个绝缘体2两端分别与对应的齿 形带3齿顶和电机外壳1紧密贴合，使得悬伸绕组4产生的热量首先通过相变齿形带3的齿根带走，进而通过齿形带3齿顶传递到绝缘体2，再通过绝缘体2传递到电机外壳1进行散热，散热路径热阻较小，散热效果较好。设置了防短路结构的绝缘体2后，保证了电机的运行安全，在传热效率稍微降低的情况下，能够通过相变齿形带3实现高效传热。电机即使长期运行也不容易产生热量堆积，延长电机的使用寿命。
具体地，齿形带3的齿顶和齿根以及绝缘体2的截面均为弧形，绝缘体2为U形。
绝缘体2能够分别与齿形带3的齿顶和电机外壳1内壁紧密贴合，齿形带3的齿根能够与悬伸绕组4紧密贴合。绝缘体2与齿形带3以及电机外壳1的充分接触，可以避免电机振动过程中出现接触空隙，因此大大降低了接触热阻，提高导热效率。
U形绝缘体2紧密扣接于齿形带3的齿顶。绝缘体2宽度小于齿形带3的齿顶宽度。U形结构使得绝缘体2能够更牢固地安装于齿形带3上，不容易松脱，减少故障机率。
进一步地，绝缘体2与对应的齿形带3齿顶之间涂有导热材料，以使绝缘体2扣接于齿形带3齿顶上时，保证绝缘体2与电机外壳1内壁充分接触。
具体地，导热材料包括导热硅脂和导热泥。绝缘体2由陶瓷或高分子绝缘材料制成。
电机外壳1为水冷外壳、油冷外壳或风冷外壳。
上述实施例为本实用新型较佳的实施方式，但本实用新型的实施方式并不受上述实施例的限制，其他的任何未背离本实用新型的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本实用新型的保护范围之内。

Claims (7)

  1. 一种具有防短路结构的相变齿形带散热电机，包括悬伸绕组与电机外壳，其特征在于：悬伸绕组与电机外壳之间设有由超薄相变器件弯折而成的齿形带，齿形带包括多个依次交错拼接形成闭环的齿根和齿顶，齿形带的每个齿根均抵接于悬伸绕组，齿形带的每个齿顶与电机外壳之间均设有绝缘体，每个绝缘体两端分别与对应的齿形带齿顶和电机外壳紧密贴合。
  2. 按照权利要求1所述的一种具有防短路结构的相变齿形带散热电机，其特征在于：绝缘体宽度小于齿形带的齿顶宽度。
  3. 按照权利要求1所述的一种具有防短路结构的相变齿形带散热电机，其特征在于：绝缘体为U形，U形绝缘体紧密扣接于齿形带的齿顶。
  4. 按照权利要求1所述的一种具有防短路结构的相变齿形带散热电机，其特征在于：绝缘体与对应的齿形带齿顶之间涂有导热材料。
  5. 按照权利要求4所述的一种具有防短路结构的相变齿形带散热电机，其特征在于：导热材料包括导热硅脂和导热泥。
  6. 按照权利要求1所述的一种具有防短路结构的相变齿形带散热电机，其特征在于：绝缘体由陶瓷或高分子绝缘材料制成。
  7. 按照权利要求1所述的一种具有防短路结构的相变齿形带散热电机，其特征在于：电机外壳为水冷外壳、油冷外壳或风冷外壳。
PCT/CN2023/091404 2022-10-27 2023-04-27 一种具有防短路结构的相变齿形带散热电机 WO2024087563A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2978631A1 (fr) * 2011-07-29 2013-02-01 Renault Sa Element de machine electrique comprenant une carcasse et un bobinage
CN107659018A (zh) * 2017-09-30 2018-02-02 天津大学 一种加强电机端部冷却的可拆卸式热管冷却结构
CN108964318A (zh) * 2018-07-04 2018-12-07 中国科学院电工研究所 一种电机定子绕组的复合灌封冷却结构
CN112888267A (zh) * 2021-02-05 2021-06-01 华南理工大学 一种超薄柔性均热板及制作方法
CN218771526U (zh) * 2022-10-27 2023-03-28 广东畅能投资控股有限公司 一种具有防短路结构的相变齿形带散热电机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2978631A1 (fr) * 2011-07-29 2013-02-01 Renault Sa Element de machine electrique comprenant une carcasse et un bobinage
CN107659018A (zh) * 2017-09-30 2018-02-02 天津大学 一种加强电机端部冷却的可拆卸式热管冷却结构
CN108964318A (zh) * 2018-07-04 2018-12-07 中国科学院电工研究所 一种电机定子绕组的复合灌封冷却结构
CN112888267A (zh) * 2021-02-05 2021-06-01 华南理工大学 一种超薄柔性均热板及制作方法
CN218771526U (zh) * 2022-10-27 2023-03-28 广东畅能投资控股有限公司 一种具有防短路结构的相变齿形带散热电机

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