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WO2021042468A1 - 一种减速器水冷结构和减速器总成 - Google Patents

一种减速器水冷结构和减速器总成 Download PDF

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Publication number
WO2021042468A1
WO2021042468A1 PCT/CN2019/114073 CN2019114073W WO2021042468A1 WO 2021042468 A1 WO2021042468 A1 WO 2021042468A1 CN 2019114073 W CN2019114073 W CN 2019114073W WO 2021042468 A1 WO2021042468 A1 WO 2021042468A1
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WO
WIPO (PCT)
Prior art keywords
water
chamber
cooling structure
cavity
reducer
Prior art date
Application number
PCT/CN2019/114073
Other languages
English (en)
French (fr)
Inventor
李建文
杨旭东
余平
袁军伟
Original Assignee
精进电动科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 精进电动科技股份有限公司 filed Critical 精进电动科技股份有限公司
Priority to JP2022514678A priority Critical patent/JP7321363B2/ja
Priority to EP19944511.5A priority patent/EP4008928B1/en
Priority to US17/638,000 priority patent/US11662012B2/en
Publication of WO2021042468A1 publication Critical patent/WO2021042468A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0417—Heat exchangers adapted or integrated in the gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels

Definitions

  • the invention relates to the field of reducer manufacturing, in particular to a reducer water cooling structure and a reducer assembly, which are used to reduce the operating temperature of the reducer assembly.
  • the present invention is proposed to provide a solution or at least a partial solution to the above-mentioned technical problems.
  • One aspect of the present invention provides a water-cooling structure of a reducer, the water-cooling structure includes a cavity formed by a housing of the reducer and a cover plate, and the cover plate is fixedly connected to the cavity;
  • the chamber is provided with a water inlet and a water outlet, and the chamber is also provided with one or several partitions on two opposite side walls.
  • the partitions are arranged in a staggered manner and are only connected to one of the chambers.
  • the side walls are connected, and there is a gap with the opposite side wall, thereby forming a tortuous water channel, and the water inlet and the water outlet are respectively arranged at both ends of the water channel;
  • baffles are vertically arranged on the partition and the side wall of the chamber parallel to the partition.
  • the baffles are arranged staggered, one end is connected to the partition or the side wall of the chamber, and the other end There is a gap.
  • a number of heat dissipation pillars are further provided at the bottom of the chamber.
  • a wave-shaped heat dissipation rib is further provided at the bottom of the cavity.
  • the cavity and the reducer housing are integrally molded or fixedly connected.
  • the cover plate and the cavity are integrally cast molded or fixedly connected.
  • the partition between the partition and the baffle and the chamber and between the partition and the baffle are formed by casting or welding.
  • the heat dissipation column and the cavity are formed by casting or welding.
  • the cross section of the heat dissipation column is any of the following shapes: circular, elliptical, and polygonal.
  • the cavity is arranged on the bottom of the reducer housing and/or on both side walls of the reducer housing.
  • Another aspect of the present invention provides a reducer assembly, including the water-cooled structure described in any one of the above.
  • the water-cooling structure of the present invention is integrated with the reducer housing into one component, has a simple structure, saves space, is convenient for arrangement on the vehicle, reduces the number of parts, and reduces the complexity of the reducer assembly, and is simple and reliable.
  • a raised radiating column and a wave-shaped radiating rib are designed at the bottom of the water channel.
  • the cooling liquid flows in from the water inlet, passes through the multi-stage radiating column and the baffle in sequence, and fully conducts heat exchange through the surface of the radiating column, and the wave
  • the shaped radiating ribs increase the radiating contact area, further improve the cooling efficiency, and meet the requirements of the vehicle's high-speed operating conditions.
  • Fig. 1 is a schematic diagram of the water-cooling structure of the reducer located on the side of the reducer assembly in an embodiment of the present invention
  • Figure 2 is a left side view of Figure 1;
  • Figure 3 is a cross-sectional view along A-A in Figure 1;
  • Figure 4 is a cross-sectional view along B-B in Figure 3;
  • Fig. 5 is a schematic diagram of the water-cooling structure of the reducer located at the bottom of the reducer assembly in another embodiment of the present invention.
  • inside and outside in the present invention refers to the inside of the device as far as the device itself is concerned, and vice versa.
  • the water-cooling structure of the embodiment of the present invention includes a chamber formed by a reducer housing and a cover plate, the cover plate is fixedly connected to the chamber; the chambers are respectively provided with inlets For the nozzle 1 and the water outlet 2, the chamber is also provided with one or several partitions 6 on two opposite side walls.
  • the partitions 6 are arranged in a staggered manner and are only connected to one side wall of the chamber. There is a gap on the opposite side wall to form a tortuous water channel, and the water inlet 1 and the water outlet 2 are respectively arranged at both ends of the water channel;
  • the partition 6 and the chamber side wall parallel to the partition 6 are also vertically provided with several baffles 4, the baffles 4 are arranged in a staggered manner, and one end is connected to the partition or the side wall of the chamber. Connect, there is a gap at the other end.
  • Figure 4 shows a situation where there is one partition 6, but the number of partitions of the present invention is not limited to one partition.
  • the number of partitions is an odd number, the water outlet and the water inlet are on the same side of the chamber. , Easy to install and save space.
  • the baffles 4 in FIG. 4 are all vertically and symmetrically arranged, and the baffles 4 may also be distributed in an irregular manner.
  • the cooling water can fully flow in the water-cooled chamber, exchange heat with the baffle and the baffle, and improve the cooling efficiency.
  • the bottom of the chamber is further provided with a number of heat dissipation pillars 3, the heat dissipation pillars 3 can be arranged at the bottom of the chamber regularly or in groups, or irregularly distributed, so as to achieve multi-level The purpose of cooling the lubricating oil on the other side of the bottom of the chamber in multiple levels.
  • the bottom of the cavity is also provided with wave-shaped heat dissipation ribs 5, and the heat dissipation ribs 5 can be provided in multiple or one group, which increases the heat dissipation contact area.
  • the lubricating oil flows inside the wave-shaped heat dissipation ribs 5.
  • the cooling water flows on the outside of the wave-shaped heat dissipation rib 5 to take away the heat transferred by the lubricating oil of the reducer assembly.
  • the cavity and the reducer housing are integrally cast molded or fixedly connected; the cover plate and the cavity are integrally cast molded or fixedly connected.
  • the above-mentioned fixed connection can be in various forms such as welding, bolt connection, etc., and there is no specific limitation here.
  • between the partition and the baffle and the chamber and between the partition and the baffle are cast or welded; and the heat dissipation column and the cavity are cast or welded.
  • the cross section of the heat dissipation column is any of the following shapes: circle, ellipse, polygon, where the polygon can be a triangle, a quadrilateral such as a rhombus, etc., or a polygon with more than five sides. , So as to achieve better heat dissipation effect.
  • the cavity is arranged on the bottom of the reducer housing and/or on both side walls of the reducer housing.
  • the water cooling structure can be arranged at any position on the reducer housing as required.
  • the water-cooling structure disclosed by the present invention is integrated with the reducer shell into one part, which has a simple structure and saves space; meanwhile, a convex heat dissipation column 3 and a wave-shaped heat dissipation rib 5 are designed at the bottom of the water channel, which further improves the cooling efficiency.
  • the working process of the water-cooling structure of the present invention is as follows: the cooling liquid flows in from the water inlet 1, sequentially passes through the multi-stage heat dissipation column 3 and the baffle 4, and relies on the surface of the heat dissipation column 3 for full heat exchange.
  • the wave-shaped heat dissipation ribs 5 increase heat dissipation.
  • the lubricating oil flows on the inside of the wave rib 5, and the coolant flows on the outside of the wave rib 5, taking away the heat transferred by the lubricating oil of the reducer assembly, and the cooling liquid reaches the bottom of the cooler and then folds back, and the same passes again.
  • the multi-stage heat dissipation column 3 and the baffle 4 flow out through the water outlet 2 to complete a cooling cycle.
  • Another aspect of the present invention provides a reducer assembly, which includes the above-mentioned water-cooled structure of the reducer.

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

Abstract

一种减速器水冷结构和减速器总成，其中水冷结构包括由减速器壳体形成的腔室和盖板，盖板固定连接在腔室上；腔室上分别设置有进水口（1）和出水口（2），腔室在相对的两侧壁上还设置有一个或数个隔板（6），隔板（6）交错布置，仅与腔室的一侧壁连接，与相对的另一侧壁存在间隙，从而形成曲折水道，进水口（1）和出水口（2）分别设置在水道的两端；隔板（6）以及与隔板（6）平行的腔室侧壁上还垂直设置有数个挡板（4），挡板（4）交错布置。该水冷结构与减速器壳体集成为一个部件，结构简单，节省空间，便于在车辆上布置，并且进一步提高了冷却效率。

Description

一种减速器水冷结构和减速器总成 技术领域
本发明涉及减速器制造领域，具体涉及一种减速器水冷结构和减速器总成，用于降低减速器总成运转温度。
发明背景
纯电动或混合动力新能源汽车采用的电动机转速区间宽广且转速较高，减速器总成在高转速区间内运转时，齿轮搅油损失严重，产生大量的热，导致减速器总成温度快速升高；同时电机工作时产生的热量经过壳体传导到减速器总成上，进一步加剧了减速器总成的温升。
目前的减速器总成大多采用风冷设计，冷却效果差，散热不及时，使减速器总成内部温度过高，轴承、齿轮以及油封等零件长时间在高温下运行，容易提前失效，降低了减速器总成的设计寿命和可靠性，无法满足新能源汽车的设计要求。
发明内容
鉴于上述问题，提出了本发明以便提供一种解决或者至少部分解决上述技术问题的。
为达到上述目的，本发明的技术方案是这样实现的：
本发明一方面提供一种一种减速器水冷结构，所述水冷结构包括由减速器壳体形成的腔室和盖板，所述盖板固定连接在所述腔室上；
所述腔室上分别设置有进水口和出水口，所述腔室在相对的两侧壁上还设置有一个或数个隔板，所述隔板交错布置，仅与所述腔室的一侧壁连接，与相对的另一侧壁存在间隙，从而形成曲折水道，所述进水口和出水口分别设置在水道的两端；
且所述隔板以及与所述隔板平行的腔室侧壁上还垂直设置有数个挡板，所述挡板交错布置，一端与所述隔板或所述腔室侧壁连接，另一端存在间隙。
可选的，所述腔室的底部还设置有数个散热柱。
可选的，所述腔室的底部还设置有波浪形的散热筋。
可选的，所述腔室与所述减速器壳体一体铸造成型或固定连接。
可选的，所述盖板与所述腔室一体铸造成型或固定连接。
可选的，所述隔板和挡板与所述腔室之间以及隔板与挡板之间铸造成型或焊接成型。
可选的，所述散热柱与所述腔室铸造成型或焊接成型。
可选的，所述散热柱的横截面为如下形状中的任一种：圆形、椭圆形、多边形。
可选的，所述腔室设置在所述减速器壳体底部和/或所述减速器壳体的两侧壁上。
本发明另一方面提供一种减速器总成，包括上述任一项所述的水冷结构。
本发明的具有以下优点：
本发明的水冷结构与减速器壳体集成为一个部件，结构简单，节省空间，便于在车辆上进行布置，同时减少了零部件的数量，降低减速器总成的复杂性，简单可靠。
本发明在水道底部设计了凸起的散热柱和波浪形的散热筋，冷却液从进水口流入，依次通过多级散热柱和挡板，经过散热柱的表面充分进行热交换，并且所述波浪形的散热筋，增加了散热接触面积，进一步提高了冷却效率，满足车辆的高转速工况需求。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
附图简要说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1是本发明一个实施例中减速器水冷结构位于减速器总成侧面的示意图；
图2是图1的左视图；
图3是图1中沿A-A的剖视图；
图4是图3中沿B-B的剖视图；
图5是本发明另一个实施例中减速器水冷结构位于减速器总成底部的示意图。
图中：1.进水口；2.出水口；3.散热柱；4.挡板；5.波浪筋；6.隔板。
实施本发明的方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
本发明中所述的“和/或”的含义指的是各自单独存在或两者同时存在的情况均包括在内。
本发明中所述的“内、外”的含义指的是相对于设备本身而言，指向设备内部的方向为内，反之为外。
参见图3-4，本发明的实施例的水冷结构包括由减速器壳体形成的腔室和盖板，所述盖板固定连接在所述腔室上；所述腔室上分别设置有进水口1和出水口2，所述腔室在相对的两侧壁上还设置有一个或数个隔板6，所述隔板6交错布置，仅与所述腔室的一侧壁连接，与相对的另一侧壁存在间隙，从而形成曲折水道，所述进水口1和出水口2分别设置在水道的两端；
且所述隔板6以及与所述隔板6平行的腔室侧壁上还垂直设置有数个挡板4，所述挡板4交错布置，一端与所述隔板或所述腔室侧壁连接，另一端存在间隙。
其中图4示出了存在一个隔板6的情形，然而本发明的隔板数量不限于一个隔板，当所述隔板为奇数个时，所述出水口和进水口在腔室的同一侧，便于安装，节省了空间。进一步地，图4中的挡板4均竖直对称布置，而挡板4也可以以不规则的方式分布。
本发明的该实施例通过隔板和挡板的设计，使得冷却水在水冷腔室内充分流动，与隔板和挡板进行热量交换，提高了冷却的效率。
在一个优选的实施例中，所述腔室的底部还设置有数个散热柱3，所述散热柱3可以规则或成组地布置在腔室底部，也可以呈不规则分布，从而实现多级多层次地对腔室底部另一侧的润滑油进行冷却的目的。
优选的，所述腔室的底部还设置有波浪形的散热筋5，所述散热筋5可以设置多组或一组，增加了散热接触面积，润滑油在波浪形的散热筋5内侧流动，冷却水在波浪形的散热筋5的外侧流动，带走减速器总成润滑油传递的热量。
在一个实施例中，所述腔室与所述减速器壳体一体铸造成型或固定连接；所述盖板与所述腔室一体铸造成型或固定连接。其中，上述的固定连接可以是焊接、螺 栓连接等多种形式，在此不作具体的限制。
在一个实施例中，所述隔板和挡板与所述腔室之间以及隔板与挡板之间铸造成型或焊接成型；且所述散热柱与所述腔室铸造成型或焊接成型。通过一体铸造成型或焊接成型，保证了隔板与挡板以及散热柱与腔室底部的连接强度，简化了制作的流程。
在一个实施例中，所述散热柱的横截面为如下形状中的任一种：圆形、椭圆形、多边形，其中多边形可以是三角形、四边形如菱形等，还可以是五条边以上的多边型，从而达到更好的散热效果。
优选的，所述腔室设置在所述减速器壳体底部和/或所述减速器壳体的两侧壁上。当然，所述水冷结构可以根据需要设置在减速器壳体上的任一位置。
本发明公开的水冷结构与减速器壳体集成为一个零件，结构简单，节省空间；同时在水道底部设计了凸起的散热柱3和波浪形的散热筋5，进一步提高了冷却效率。
本发明水冷结构的工作流程如下：冷却液从进水口1流入，依次通过多级散热柱3和挡板4，依靠散热柱3的表面充分进行热交换，波浪形的散热筋5，增加了散热接触面积，润滑油在波浪筋5的内侧流动，冷却液在波浪筋5的外侧流动，带走减速器总成润滑油传递过来的热量，冷却液到达冷却器底部后再折回，同样的再次通过多级散热柱3和挡板4，经过出水口2流出，完成一个冷却循环。
本发明另一方面提供一种减速器总成，包括了上述的减速器水冷结构。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (10)

  1. 一种减速器水冷结构，其特征在于，所述水冷结构包括由减速器壳体形成的腔室和盖板，所述盖板固定连接在所述腔室上；
    所述腔室上分别设置有进水口和出水口，所述腔室在相对的两侧壁上还设置有一个或数个隔板，所述隔板交错布置，仅与所述腔室的一侧壁连接，与相对的另一侧壁存在间隙，从而形成曲折水道，所述进水口和出水口分别设置在水道的两端；
    所述隔板以及与所述隔板平行的腔室侧壁上还垂直设置有数个挡板，所述挡板交错布置，一端与所述隔板或所述腔室侧壁连接，另一端存在间隙。
  2. 如权利要求1所述的水冷结构，其特征在于，所述腔室的底部还设置有散热柱。
  3. 如权利要求1或2所述的水冷结构，其特征在于，所述腔室的底部还设置有波浪形的散热筋。
  4. 如权利要求1所述的水冷结构，其特征在于，所述腔室与所述减速器壳体一体铸造成型或固定连接。
  5. 如权利要求1所述的水冷结构，其特征在于，所述盖板与所述腔室一体铸造成型或固定连接。
  6. 如权利要求1所述的水冷结构，其特征在于，所述隔板和挡板与所述腔室之间以及隔板与挡板之间铸造成型或焊接成型。
  7. 如权利要求2所述的水冷结构，其特征在于，所述散热柱与所述腔室铸造成型或焊接成型。
  8. 如权利要求2或7所述的水冷结构，其特征在于，所述散热柱的横截面为如下形状中的任一种：圆形、椭圆形、多边形。
  9. 如权利要求1所述的水冷结构，其特征在于，所述腔室设置在所述减速器壳体底部和/或所述减速器壳体的两侧壁上。
  10. 一种减速器总成，其特征在于，包括权利要求1-9任一项所述的水冷结构。
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