WO2019205694A1 - 一种具有冷却水道的电机减速器集成壳体 - Google Patents

一种具有冷却水道的电机减速器集成壳体 Download PDF

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Publication number
WO2019205694A1
WO2019205694A1 PCT/CN2018/123771 CN2018123771W WO2019205694A1 WO 2019205694 A1 WO2019205694 A1 WO 2019205694A1 CN 2018123771 W CN2018123771 W CN 2018123771W WO 2019205694 A1 WO2019205694 A1 WO 2019205694A1
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Prior art keywords
housing
motor
cooling
reducer
cooling water
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PCT/CN2018/123771
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English (en)
French (fr)
Inventor
刘蕾
王战
李跃华
何靖
崔景伟
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合肥巨一动力系统有限公司
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Publication of WO2019205694A1 publication Critical patent/WO2019205694A1/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
    • H02K5/20—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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • 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

Definitions

  • the invention relates to the field of structural design of a motor reducer housing, in particular to a motor reducer integrated housing with a cooling water channel.
  • the motor housing is designed to integrally mold the casing of the motor and the casing of the reducer.
  • the cooling circulation channel can form an internal cavity by low pressure casting, while cooling the stator core of the motor, the reducer case and the motor bearing seat.
  • the inlet of the circulating water channel is directly connected to the outlet of the controller water channel, and the outlet of the circulating water channel is placed on the reducer housing.
  • the existing motor housing has the following disadvantages: 1) The connection between the existing motor and the reducer is usually bolted, which not only increases the space of the entire bridge assembly, but also increases the assembly difficulty and The amount of parts used; 2), the existing motor waterway circulation system is usually wrapped in the stator core of the motor to separately cool the stator core, the cooling system has low cooling efficiency; 3), the reducer is directly connected to the motor housing, the motor or The temperature rise of the reducer at different speeds is different, or the temperature rise on the side where the temperature is high is increased. Therefore, it is necessary to structurally improve the cooling water passage of the motor casing to solve the above problems.
  • the object of the invention is to provide an integrated housing of a motor reducer with a cooling water channel
  • the casing is composed of a motor casing and a reducer housing, and is formed by low-pressure casting
  • the motor has a water inlet inlet and a cooling stator.
  • the iron core, the reducer, and the bearing chamber are discharged from the water outlet, and the circulating reciprocating cooling motor reducer integrated housing.
  • a motor reducer integrated housing having a cooling water passage comprising a motor housing integral with the reducer housing and the reducer housing, the reducer housing and the housing of the motor housing
  • the body is provided with a cooling circulation channel for cooling the stator core, the motor bearing housing, the front end cover end face and the reducer housing mounted in the motor housing.
  • the cooling circulation channel is an internal cavity that is connected by a waterway inlet, a motor cooling portion, an end cover, a bearing cooling portion, and a water channel outlet; the water channel inlet is disposed on the motor housing.
  • the motor cooling portion is disposed in a spiral shape in the motor housing, and the end cover and the bearing cooling portion are disposed at a connection interface between the reducer housing and the motor housing, and the water channel outlet is disposed at the reducer housing Physically.
  • the end cover and the bearing cooling portion include an end cover cooling water channel and a bearing cooling water channel;
  • the end cover cooling water channel has a semi-fan shape and is disposed in parallel with the front end cover end surface of the motor housing for Cooling the front end cover end face and the reducer housing;
  • the bearing cooling water passage is semi-annular, perpendicular to the end cover cooling water passage, and disposed outside the outer circumference of the motor bearing housing of the motor housing for cooling the motor bearing housing .
  • the reducer housing and the motor housing are integrally formed by low pressure casting, and the cooling circulation water channel is an internal cavity formed by low pressure casting.
  • the integrated casing and the cooling water passage of the motor can successively cool the stator core of the motor, the reducer housing and the motor bearing chamber, which improves the cooling efficiency of the entire cooling system and reduces the heat loss of the electric drive system;
  • the middle channel of the motor and the reducer can not only cool the casing, but also avoid the heat dissipation of the reducer and the motor as a heat source to the other party under various speeds;
  • FIG. 1 is a schematic structural view of an integrated housing of a motor reducer having a cooling water passage of the present invention
  • FIG. 2 is a schematic perspective view showing a water passage in an integrated casing of the present invention
  • a motor reducer integrated housing having a cooling water passage includes a motor housing 2 in which the reducer housing 1 and the reducer housing 1 are integrated; the reducer housing 1 and A cooling circulation channel 3 is disposed in the housing of the motor housing 2, and the reduction gear housing 1 and the motor housing 2 are integrally formed by low pressure casting, and the cooling circulation channel 3 is an internal cavity formed by low pressure casting; A stator core is fixedly mounted in the motor housing 2, as indicated by reference numeral 5 in FIG.
  • the circulating water channel 3 is for cooling the stator core, the motor bearing housing, the front end cover end face, and the reducer housing 1 which are mounted in the motor housing 2.
  • the cooling circulation channel 3 is an internal communication body composed of a water channel inlet 31, a motor cooling portion 32, an end cover and a bearing cooling portion 33 and a water channel outlet 34.
  • a cavity inlet 31 is disposed on the motor housing 2
  • the motor cooling portion 32 is disposed in a spiral shape in the motor housing 2
  • the end cover and the bearing cooling portion 33 are disposed in the reducer housing
  • the waterway outlet 34 is disposed on the reducer housing 1 at a joint interface with the motor housing 2; wherein the end cover and bearing cooling portion 33 includes an end cover cooling water passage 33-1 and a bearing cooling water passage 33.
  • the end cap cooling water passage 33-1 has a semi-fan shape and is disposed in parallel with the front end cover end surface of the motor housing for cooling the front end cover end surface and the reducer housing; the bearing cooling water passage 33-2
  • the utility model has a semi-annular shape and is disposed perpendicular to the end cover cooling water channel 33-1 and is disposed outside the outer circumference of the motor bearing housing of the motor housing for cooling the motor bearing housing.
  • the invention relates to a motor reducer integrated casing with a cooling water channel, wherein the casing is integrally cast and formed, and a cooling circulating water channel is arranged inside the casing, and cooling water enters from the waterway inlet, and the stator core is cooled first, and then cooled.
  • the cooling circulating water channel is a casting sand core, and is discharged from the sand discharging hole outside the casing after the casting is completed; the cooling circulating water channel improves the cooling efficiency of the motor, blocks the relative heat diffusion of the motor and the speed reducer, and solves the high motor height. Heat dissipation of the bearing at speed.

Abstract

一种具有冷却水道的电机减速器集成壳体，包括减速器壳体（1）以及与减速器壳体（1）一体的电机壳体（2）；该减速器壳体（1）与电机壳体（2）的壳体内设置有一条冷却循环水道（3），该冷却循环水道（3）用于冷却安装在电机壳体（2）内的定子铁芯、电机轴承座（4）及前端盖端面。该电机减速器集成壳体采用一体铸造成型，冷却循环水道（3）可通过低压铸造形成内部腔体，该冷却循环水道（3）可用于冷却电机定子铁芯、减速器壳体（1）和电机轴承座（4），提高了整个冷却系统的冷却效率，降低了电驱动系统热损耗，且提高了轴承的使用寿命。

Description

一种具有冷却水道的电机减速器集成壳体 技术领域
本发明涉及电机减速器壳体结构设计领域，具体为一种具有冷却水道的电机减速器集成壳体。
背景技术
目前电机与减速器、PEB集成化设计成为现有电驱动系统设计的主流，可以有效的提高系统空间利用率。电机壳体的设计可以使电机的机壳和减速器的机壳一体铸造成型，冷却循环水道可以通过低压铸造形成内部腔体，同时冷却电机定子铁芯，减速器箱体和电机轴承座，循环水道的入口与控制器水道的出口直接相连，循环水道的出口与置于减速器壳体上。然而现有的电机壳体存在以下缺点：1)、现有的电机与减速器的连接形式通常是采用螺栓装配，不仅增大了了整个电桥总成的空间，还增加了装配难度和零件的用量；2)、现有的电机水道循环系统通常是包裹电机定子铁芯单独冷却定子铁芯，冷却系统的冷却效率较低；3)、减速器与电机壳体直接相连，电机或减速器在不同转速下的温升不同，或加剧温度高的一侧温升提高。因此有必要对电机壳体的冷却水道进行结构改进来解决上述问题。
发明内容
本发明目的是：提供了一种具有冷却水道的电机减速器集成壳体，机壳由电机壳体和减速器壳体两部分组成，低压铸造成型，电机有入水口进水先后冷却定子铁芯，减速器，轴承室后由出水口流出，循环往复冷却电机减速器集成壳体。
本发明的技术方案是：一种具有冷却水道的电机减速器集成壳体，包括减速器壳体与减速器壳体一体的电机壳体，所述减速器壳体与电机壳体的壳体内设置有一条冷却循环水道，所述冷却循环水道用于冷却安装在电机壳体内的定子铁芯、电机轴承座、前端盖端面及减速器壳体。
作为优选的技术方案，所述冷却循环水道是由水道入口、电机冷却部分、端盖与轴承冷却部分和水道出口组成的一条相连通的内部腔体；所述水道入口设置于电机壳体上，所述电机冷却部分呈螺旋状设置在电机壳体内，所述端盖与轴承冷却部分设置在减速器壳体与电机壳体的相连分界面处，所述水 道出口设置于减速器壳体上。
作为优选的技术方案，所述端盖与轴承冷却部分包括端盖冷却水道和轴承冷却水道；所述端盖冷却水道呈半扇形状，且与电机壳体的前端盖端面平行设置，用于冷却前端盖端面及减速器壳体；所述轴承冷却水道呈半圆环状，与端盖冷却水道相互垂直设置，且设置于电机壳体的电机轴承座外圆周外侧，用于冷却电机轴承座。
作为优选的技术方案，所述减速器壳体与电机壳体采用低压铸造一体成型，所述冷却循环水道为低压铸造形成的内部腔体。
本发明的优点是：
1)、电机与减速器壳体一体化设计，减少整个电桥总成的轴向尺寸，整体化的设计轴向装配零件的装配同心度更容易控制，同时减少了电机零件的用量；
2)、整体化的机壳，电机的冷却水道可以先后冷却电机定子铁芯，减速器壳体，电机轴承室，提高了整个冷却系统的冷却效率，降低了电驱动系统热损耗；
3)、电机与减速器中间水道不仅可以起到冷却机壳的效果，还可以避免在各种转速下减速器和电机作为热源向对方扩散热量；
4)、增加了电机高转速下轴承的冷却结构，提高了轴承的使用寿命。
附图说明
下面结合附图及实施例对本发明作进一步描述：
图1是本发明的具有冷却水道的电机减速器集成壳体的结构示意图；
图2是本发明的集成壳体内的水道的立体结构示意图；
其中：1、减速器壳体；2、电机壳体；3、冷却循环水道；
31、水道入口；32、电机冷却部分；33、轴承冷却部分；34、水道出口；
33-1、端盖冷却水道；33-2、轴承冷却水道；
4、电机轴承座；5、定子铁芯固定位。
具体实施方式
实施例：
如附图1～2所示，一种具有冷却水道的电机减速器集成壳体，包括减速器壳体1与减速器壳体1一体的电机壳体2；所述减速器壳体1与电机壳 体2的壳体内设置有一条冷却循环水道3，所述减速器壳体1与电机壳体2采用低压铸造一体成型，所述冷却循环水道3为低压铸造形成的内部腔体；所述电机壳体2内固定安装有定子铁芯，如附图1中标记5为定子铁芯固定位，电机壳体2内还设置有用于安装轴承的电机轴承座4；所述冷却循环水道3用于冷却安装在电机壳体2内的定子铁芯、电机轴承座、前端盖端面及减速器壳体1。
如附图2所示，对上述技术方案进一步的说明，所述冷却循环水道3是由水道入口31、电机冷却部分32、端盖与轴承冷却部分33和水道出口34组成的一条相连通的内部腔体；所述水道入口31设置于电机壳体2上，所述电机冷却部分32呈螺旋状设置在电机壳体2内，所述端盖与轴承冷却部分33设置在减速器壳体1与电机壳体2的相连分界面处，所述水道出口34设置于减速器壳体1上；其中所述端盖与轴承冷却部分33包括端盖冷却水道33-1和轴承冷却水道33-2；所述端盖冷却水道33-1呈半扇形状，且与电机壳体的前端盖端面平行设置，用于冷却前端盖端面及减速器壳体；所述轴承冷却水道33-2呈半圆环状，与端盖冷却水道33-1相互垂直设置，且设置于电机壳体的电机轴承座外圆周外侧，用于冷却电机轴承座。
本发明所述的一种具有冷却水道的电机减速器集成壳体，其壳体采用一体铸造成型，壳体内部设置有冷却循环水道，冷却水从水道入口进入，先冷却定子铁芯，其次冷却减速器壳体和电机前端盖端面，再冷却轴承室，最后从水道出口流出，冷却水经过外部散热后再次从水道入口流入，循环冷却电机壳体。该冷却循环水道为铸造砂芯，铸造完成后再从机壳外围的排沙孔排出；所述冷却循环水道提高了电机的冷却效率，阻隔了电机与减速器的相对热扩散，解决了电机高转速时轴承的散热问题。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明的。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明的所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (4)

  1. 一种具有冷却水道的电机减速器集成壳体，包括减速器壳体(1)以及与减速器壳体(1)一体的电机壳体(2)，其特征在于：所述减速器壳体(1)与电机壳体(2)的壳体内设置有一条冷却循环水道(3)，所述冷却循环水道(3)用于冷却安装在电机壳体(2)内的定子铁芯、电机轴承座、前端盖端面及减速器壳体(1)。
  2. 根据权利要求1所述的一种具有冷却水道的电机减速器集成壳体，其特征在于：所述冷却循环水道(3)是由水道入口(31)、电机冷却部分(32)、端盖与轴承冷却部分(33)和水道出口(34)组成的一条相连通的内部腔体；所述水道入口(31)设置于电机壳体(2)上，所述电机冷却部分(32)呈螺旋状设置在电机壳体(2)内，所述端盖与轴承冷却部分(33)设置在减速器壳体(1)与电机壳体(2)的相连分界面处，所述水道出口(34)设置于减速器壳体(1)上。
  3. 根据权利要求2所述的一种具有冷却水道的电机减速器集成壳体，其特征在于：所述端盖与轴承冷却部分(33)包括端盖冷却水道(33-1)和轴承冷却水道(33-2)；所述端盖冷却水道(33-1)呈半扇形状，且与电机壳体的前端盖端面平行设置，用于冷却前端盖端面及减速器壳体；所述轴承冷却水道(33-2)呈半圆环状，与端盖冷却水道(33-1)相互垂直设置，且设置于电机壳体的电机轴承座外圆周外侧，用于冷却电机轴承座。
  4. 根据权利要求1～3任一项所述的一种具有冷却水道的电机减速器集成壳体，其特征在于：所述减速器壳体(1)与电机壳体(2)采用低压铸造一体成型，所述冷却循环水道(3)为低压铸造形成的内部腔体。
PCT/CN2018/123771 2018-04-28 2018-12-26 一种具有冷却水道的电机减速器集成壳体 WO2019205694A1 (zh)

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