WO2023010946A1 - 一种减速器壳体和电驱动总成 - Google Patents

一种减速器壳体和电驱动总成 Download PDF

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Publication number
WO2023010946A1
WO2023010946A1 PCT/CN2022/093088 CN2022093088W WO2023010946A1 WO 2023010946 A1 WO2023010946 A1 WO 2023010946A1 CN 2022093088 W CN2022093088 W CN 2022093088W WO 2023010946 A1 WO2023010946 A1 WO 2023010946A1
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WIPO (PCT)
Prior art keywords
cooling liquid
reducer
liquid tank
cooling
tank
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PCT/CN2022/093088
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English (en)
French (fr)
Inventor
刘洋
李建文
潘发玉
黄亚男
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精进电动科技股份有限公司
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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 JP2024506451A priority Critical patent/JP2024528954A/ja
Priority to EP22851664.7A priority patent/EP4361469A1/en
Priority to US18/293,964 priority patent/US20240337314A1/en
Publication of WO2023010946A1 publication Critical patent/WO2023010946A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
    • 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
    • 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
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • 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
    • F16H57/0457—Splash lubrication
    • 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
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02026—Connection of auxiliaries with a gear case; Mounting of auxiliaries on the gearbox
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions

Definitions

  • the utility model belongs to the technical field of reducer cooling, in particular to a reducer housing and an electric drive assembly.
  • the main cooling method of Xinneng automobile reducer is gear oil stirring cooling, that is, the lubricating oil inside the reducer shell is stirred through the gears, so that the lubricating oil flows to the gears, bearings and other positions with the agitation of the gears, and takes away the oil when the reducer is running. Cooling is achieved by the heat generated.
  • the present application discloses a reducer housing and an electric drive assembly to overcome the above problems or at least partly solve the above problems.
  • the present application discloses a reducer housing on the one hand, the bottom of the reducer housing and/or the side wall through which the lubricating oil flows is provided with a liquid cooling and heat dissipation structure, and the liquid cooling and heat dissipation structure includes a cooling liquid tank and a cover plate, the cover plate is used to seal the cooling liquid tank, and the two ends of the cooling liquid tank are respectively provided with a liquid inlet and a liquid outlet;
  • the bottom of the cooling liquid tank is alternately provided with several convex structures and concave structures, so that the inner surface and the outer surface of the bottom of the cooling liquid tank are arranged in a wave shape, which is used to increase the size of the cooling liquid tank and the speed reducer.
  • the contact area of the lubricating fluid in the housing is used to increase the size of the cooling liquid tank and the speed reducer.
  • the cover plate or the side wall of the cooling liquid tank are provided with several deflectors vertically arranged to the bottom of the cooling liquid tank, the position of the deflectors corresponds to the position of the concave structure, The deflector cooperates with the raised structure to form a continuous S-shaped channel through which the cooling liquid flows.
  • the wavy amplitude of the bottom of the cooling liquid tank decreases in steps from the liquid inlet to the liquid outlet.
  • liquid cooling heat dissipation structure is integrally cast with the reducer housing.
  • a sealing ring is provided between the cooling liquid tank and the cover plate.
  • coolant tank and the cover plate are fixed by bolts/screws or welded.
  • an electric drive assembly includes a motor assembly and a speed reducer assembly
  • the motor assembly includes a motor housing
  • the speed reducer assembly includes the speed reducer described in any one of the above device housing.
  • liquid inlet communicates with the cooling liquid channel inside the motor water jacket
  • liquid inlet is connected to the outlet of the motor cooling liquid channel.
  • the reducer housing is provided with an oil guide rib and an oil collection groove, and the oil guide rib is used to guide the lubricating oil splashed by the gear of the reducer into the oil collection groove and the parts to be lubricated and the parts to be lubricated in the reducer housing. Cooling parts; the lubricating oil in the oil collection tank is delivered to the parts to be lubricated and parts to be cooled in the motor housing through the oil passage.
  • an oil baffle or an oil baffle is provided inside the reducer housing.
  • cooling liquid grooves are provided on the bottom of the reducer housing and/or the side wall through which the lubricating oil flows, and several convex structures and concave structures are alternately arranged at the bottom of the cooling liquid groove , so that the inner and outer surfaces of the bottom of the coolant tank are arranged in a wave shape, increasing the contact area between the coolant tank and the lubricating fluid in the reducer housing, thereby realizing the heat exchange between the coolant and the lubricating fluid in the coolant tank, It can quickly take away the heat in the reducer housing, improve the heat dissipation performance of the reducer, and prolong the service life of the reducer.
  • Fig. 1 is a schematic cross-sectional structure diagram of a reducer housing in an embodiment of the present invention
  • Fig. 2 is a schematic structural view of the electric drive assembly in an embodiment of the present invention.
  • Coolant tank 1. Coolant tank; 2. Cover plate; 3. Liquid inlet; 4. Liquid outlet; 5. Protruding structure; 6. Concave structure; 7. Baffle plate; 8. Motor housing ; 9, the oil guide rib; 10, the oil sump; 11, the oil channel; 12, the oil retaining rib.
  • One embodiment of the present application discloses a reducer housing.
  • the bottom of the reducer housing and/or the side wall through which the lubricating oil flows is provided with a liquid-cooled heat dissipation structure, as shown in Figures 1 to 2.
  • the heat dissipation structure includes a cooling liquid tank 1 and a cover plate 2, the cover plate 2 is used to seal the cooling liquid tank 1, and the two ends of the cooling liquid tank 1 are respectively provided with a liquid inlet 3 and a liquid outlet 4, wherein the liquid inlet 3 and the liquid outlet The position of port 4 can be interchanged.
  • the liquid cooling heat dissipation structure on the reducer housing can be one or a combination of multiple structures. When there are multiple liquid cooling and heat dissipation structures on the reducer housing, the multiple liquid cooling and heat dissipation structures are arranged in series or in parallel.
  • the liquid-cooled heat dissipation structure When the liquid-cooled heat dissipation structure is arranged at the bottom of the reducer housing, in order to improve the heat dissipation performance of the reducer, the liquid-cooled heat dissipation structure can be laid flat on the bottom of the entire reducer housing.
  • the bottom of the cooling liquid tank 1 is alternately provided with a number of raised structures 5 and concave structures 6, so that the inner and outer sides of the bottom of the cooling liquid tank 1 are arranged in waves, thereby increasing the contact area between the cooling liquid and the bottom of the cooling liquid tank 1, Promotes heat dissipation, where the amplitude of the waves can be adjusted.
  • the wavy bottom can effectively increase the contact area between the cooling liquid tank 1 and the lubricating liquid in the reducer housing to promote heat exchange.
  • the protruding structure 5 is convex relative to the bottom of the cooling liquid tank 1
  • the concave structure 6 is concave relative to the bottom of the cooling liquid tank 1 .
  • the depth of the protruding structure 5 and the concave structure 6 can be adjusted according to the position of the internal gear of the reducer housing.
  • the cooling liquid enters the cooling liquid tank 1 through the liquid inlet 3, and realizes heat exchange with the lubricating oil in the reducer housing through the raised structure 5 and the concave structure 6, thereby reducing the temperature of the lubricating oil.
  • cooling liquid grooves are provided on the bottom of the reducer housing and/or the side wall through which the lubricating oil flows, and several protruding structures are alternately arranged at the bottom of the cooling liquid grooves And the concave structure, so that the inner surface and outer surface of the bottom of the cooling liquid tank are arranged in a wave shape, which increases the contact area between the cooling liquid tank and the lubricating liquid in the reducer housing, and realizes the contact between the cooling liquid and the lubricating liquid in the cooling liquid tank Heat exchange can quickly take away the heat in the reducer housing, improve the heat dissipation performance of the reducer, and prolong the service life of the reducer.
  • the cover plate 2 or the side wall of the cooling liquid tank 1 are provided with a plurality of deflectors 7 vertically arranged to the bottom of the cooling liquid tank 1, and the number of deflectors 7 is the same as The number of the concave structures 6 is the same, and the position of the deflector 7 corresponds to the position of the concave structure 6.
  • the deflector 7 cooperates with the convex structure 5 to form a continuous S-shaped channel for the cooling liquid to flow through, so that the cooling liquid In the coolant tank 1, it flows up and down in an S-shape.
  • the wavy amplitude of the bottom of the cooling liquid tank 1 decreases stepwise from the liquid inlet 3 to the liquid outlet 4, which can avoid the blind area of the cooling liquid flow and increase the heat dissipation effect.
  • the liquid-cooled heat dissipation structure and the reducer housing are integrally cast, so that the structure of the reducer is more compact and the manufacturing process is saved.
  • the liquid-cooled heat dissipation structure does not need to be finished during manufacture, so that the cooling liquid will be disturbed when flowing in the cooling liquid tank, thereby facilitating the heat exchange between the cooling liquid and the bottom of the cooling liquid tank.
  • a sealing ring is provided between the cooling liquid tank 1 and the cover plate 2 for sealing between the cooling liquid tank 1 and the cover plate 2 to prevent the cooling liquid from flowing out.
  • coolant tank 1 and the cover plate 2 are fixed by bolts/screws or welded.
  • the coolant tank 1 and the cover plate 2 can also be fixed by other methods, which are also within the protection scope of the present application.
  • An embodiment of the present application discloses an electric drive assembly, the electric drive assembly includes a motor assembly and a reducer assembly, as shown in Figure 2, the motor assembly includes a motor housing 8, and the reducer assembly includes any of the above-mentioned implementations The reducer housing in the example.
  • the electric drive assembly has excellent heat dissipation performance, which can meet the working requirements of long-term, high power, high torque and high speed under various working conditions, and improve the reliability of the vehicle power system and the whole vehicle.
  • the liquid inlet 3 can be arranged on the end surface where the reducer housing and the motor housing 8 are connected, and the cooling liquid between the liquid inlet 3 and the motor water jacket can be realized through the channel provided on the motor housing.
  • the channel is connected; the circulating cooling liquid enters the cooling liquid tank 1 directly from the motor cooling liquid channel through the liquid inlet 3 provided on the reducer housing at the joint surface.
  • a water nozzle is provided at the liquid inlet 3, and then the liquid inlet 3 is connected to the outlet of the motor cooling liquid passage through the cooling liquid pipeline.
  • the circulating cooling liquid flows out from the outlet of the motor cooling liquid passage, enters the liquid inlet 3 provided on the outer wall of the cooling liquid tank 1 through the external cooling liquid pipe, and thus enters the cooling liquid tank 1 .
  • the design that the cooling liquid tank 1 communicates with the cooling liquid channel of the motor can make the speed reducer and the motor share a set of cooling liquid circulation system, which saves the cooling cost of the power system of the automobile.
  • the reducer housing is provided with an oil guide rib 9 and an oil sump 10, and the oil guide rib 9 is used to guide the lubricating oil splashed by the gear of the reducer into the oil sump 10 and The part to be lubricated and the part to be cooled in the reducer housing; the lubricating oil in the oil sump 10 is delivered to the parts to be lubricated and the part to be cooled in the motor housing 8 through the oil passage 11, thereby realizing the lubrication and cooling of the parts.
  • the parts to be cooled include bearings, gears, motor coils, motor rotors, etc.
  • the parts to be lubricated include bearings, gears, oil seals, etc.
  • an oil baffle plate or an oil baffle rib 12 is provided inside the reducer housing, which can reduce the amount of lubricating oil splashed by the reducer gear when it rotates, thereby reducing the amount of oil splashed by the reducer gear. power loss.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

一种减速器壳体，其底部和/或润滑油流经的侧壁上设有液冷散热结构，液冷散热结构包括冷却液槽（1）和盖板（2），盖板用于密封冷却液槽，冷却液槽两端分别设置有进液口（3）和出液口（4）；冷却液槽底部交替设有若干凸起结构（5）和凹下结构（6），使冷却液槽底部内侧面和外侧面均呈波浪状设置，用于增大冷却液槽与减速器壳体内润滑液的接触面积。该减速器壳体可实现冷却液槽内的冷却液与润滑液间的热量交换，快速带走减速器壳体内的热量，提高减速器的散热性能，延长减速器的使用寿命。还涉及具有该减速器壳体的电驱动总成。

Description

一种减速器壳体和电驱动总成
相关申请的交叉引用
本申请要求于2021年08月03日提交中国专利局，申请号为202121795244.5，申请名称为“一种减速器壳体和电驱动总成”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本实用新型属于减速器冷却技术领域，特别涉及一种减速器壳体和电驱动总成。
背景技术
目前，新能汽车减速器的主要冷却方式为齿轮搅油冷却，即通过齿轮搅动减速器壳体内部的润滑油，使润滑油随齿轮搅动流动至齿轮、轴承等位置，带走减速器运转时产生的热量而实现冷却。
由于新能源汽车需要面对更多复杂的路况，新能源汽车电机的转速越来越快，整车对温升的要求也随之迫切。面对温升情况及使用寿命兼顾的需求，只采用齿轮搅油冷却方式已不能满足新能源汽车的大功率、大扭矩以及最高车速和最高寿命兼顾的车辆发展要求。
申请内容
针对上述问题，本申请公开了一种减速器壳体和电驱动总成，以克服上述问题或者至少部分地解决上述问题。
为了实现上述目的，本实用新型采用以下技术方案：
本申请一方面公开一种减速器壳体，所述减速器壳体的底部和/或润滑油流经的侧壁上设有液冷散热结构，所述液冷散热结构包括冷却液槽和盖板，所述盖板用于密封所述冷却液槽，所述冷却液槽两端分别设置有进液口和出液口；
所述冷却液槽底部交替设有若干凸起结构和凹下结构，使所述冷却液槽底部内侧面和外侧面均呈波浪状设置，用于增大所述冷却液槽与所述减速器壳体内润滑液的接触面积。
进一步地，所述盖板或所述冷却液槽侧壁上设有若干与所述冷却液槽底部垂直设置的导流板，所述导流板的位置与所述凹下结构的位置对应，所述导流板与所述凸起结构配合，形成供冷却液流过的连续S型通道。
进一步地，所述冷却液槽底部的波浪状幅度从所述进液口到所述出液口梯次减小。
进一步地，所述液冷散热结构与所述减速器壳体一体铸造成型。
进一步地，所述冷却液槽和所述盖板之间设有密封圈。
进一步地，所述冷却液槽和所述盖板通过螺栓/螺钉固定或焊接固定。
本申请另一方公开一种电驱动总成，所述电驱动总成包括电机组件和减速器组件，所述电机组件包括电机壳体，所述减速器组件包括上述任一项所述的减速器壳体。
进一步地，所述进液口与电机水套内部的冷却液通道连通；
或所述进液口与电机冷却液通道出口连接。
进一步地，所述减速器壳体内设有导油筋和集油槽，所述导油筋用于把减速器齿轮溅起的润滑油导入到集油槽以及所述减速器壳体内待润滑零件和待冷却零件处；所述集油槽内的润滑油通过油道输送到所述电机壳体内的待润滑零件和待冷却零件处。
进一步地，所述减速器壳体内设有挡油板或挡油筋。
本实用新型的优点及有益效果是：
本申请的减速器壳体中，通过在减速器壳体的底部和/或润滑油流经的侧壁上设置冷却液槽，以及在冷却液槽底部交替设有若干凸起结构和凹下结构，使冷却液槽底部内侧面和外侧面均呈波浪状设置，增大冷却液槽与减速器壳体内润滑液的接触面积，进而实现冷却液槽内的冷却液与润滑液间的热量交换，能快速带走减速器壳体内的热量，提高减速器的散热性能，延长减速器的使用寿命。
附图说明
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，而并不认为是对本申请的限制。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为本实用新型的一个实施例中减速器壳体的剖面结构示意图；
图2为本实用新型的一个实施例中电驱动总成的结构示意图。
图中：1、冷却液槽；2、盖板；3、进液口；4、出液口；5、凸起结构；6、凹下结构；7、导流板；8、电机壳体；9、导油筋；10、集油槽；11、油道；12、挡油筋。
具体实施例
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
以下结合附图，详细说明本实用新型各实施例提供的技术方案。
本申请一个实施例中公开一种减速器壳体，该减速器壳体的底部和/或润滑油流经的侧壁上设有液冷散热结构，如图1～图2所示，液冷散热结构包括冷却液槽1和盖板2，盖板2用于密封冷却液槽1，冷却液槽1两端分别设置有进液口3和出液口4，其中进液口3和出液口4的位置可以互换。减速器壳体上的液冷散热结构可以为一个，或者多个结构的组合。当减速器壳体上的液冷散热结构为多个时，多个液冷散热结构串联或并联设置。
在液冷散热架构设置在减速器壳体底部时，为了提高减速器的散热性能，该液冷散热结构可以平铺在整个减速器壳体底部。
冷却液槽1底部交替设有若干凸起结构5和凹下结构6，使冷却液槽1底部内侧面和外侧面均呈波浪状设置，进而增大冷却液与冷却液槽1底部接触面积，促进散热，其中波浪状的幅度可进行调整。当冷却液槽1底部外侧与润滑油接触时，波浪状的底部同时可以有效增大冷却液槽1与减速器壳体内润滑液的接触面积，促进热量交换。其中，凸起结构5为相对冷却液槽1底部凸起，凹下结构6为相对冷却液槽1底部凹下。另外，凸起结构5和凹下结构6的深度可根据减速器壳体内部齿轮的位置进行调整。
冷却液由进液口3进入冷却液槽1内，通过凸起结构5和凹下结构6实现与减速器壳体内的润滑油间的热量交换，降低润滑油的温度。
综上，本实施例的减速器壳体中，通过在减速器壳体的底部和/或润滑油流经的侧壁上设置冷却液槽，以及在冷却液槽底部交替设有若干凸起结构和凹下结构，使冷却液槽底部内侧面和外侧面均呈波浪状设置，增大冷却液槽与减速器壳体内润滑液的接触面积，实现冷却液槽内的冷却液与润滑液间的热量交换，能快速带走减速器壳体内的热量，提高减速器的散热性能，进而延长减速器的使用寿命。
在一个实施例中，如图1～图2所示，盖板2或冷却液槽1侧壁上设有若干与冷却液槽1底部垂直设置的导流板7，导流板7的数量与凹下结构6的数量一致，且导流板7的位置与凹下结构6的位置对应，导流板7与凸起结构5配合，形成供冷却液流过的连续S型通道，使冷却液在冷却液槽1内上下呈S型流动。
在一个实施例中，冷却液槽1底部的波浪状幅度从进液口3到出液口4梯次减小，可以避免冷却液流动盲区，增加散热效果。
在一个实施例中，液冷散热结构与减速器壳体一体铸造成型，使减速器结构更为紧凑，节省制造工艺流程。另外，液冷散热结构在制造时，无需进行精加工，使冷却液在冷却液槽内流动时产生扰动，进而有利于冷却液与冷却液槽底部的热量交换。
在一个实施例中，冷却液槽1和盖板2之间设有密封圈，用于冷却液槽1和盖板2间的密封，防止冷却液流出。
进一步地，冷却液槽1和盖板2通过螺栓/螺钉固定或焊接固定，当然冷却液槽1和盖板2间还可以通过其他方式进行固定，亦在本申请的保护范围之内。
本申请一个实施例中公开一种电驱动总成，该电驱动总成包括电机组件和减速器组件，如图2所示，电机组件包括电机壳体8，减速器组件包括上述任一实施例中的减速器壳体。该电驱动总成具有优异的散热性能，可满足在各种工况下长时间、高功率、高扭矩、高转速的工作需要，提高汽车动力系统和整车的可靠性。
在一个实施例中，进液口3可设置在减速器壳体与电机壳体8连接的端面上，通过电机壳体上设置的通道实现进液口3与电机水套内部的冷却液通道连通；循环冷却液从电机冷却液通道直接经由结合面处设置于减速器壳体上的进液口3进入冷却液槽1内。
或者在进液口3处设置一个水嘴，然后通过冷却液管道实现进液口3与电机冷却液通道出口连接。循环冷却液从电机冷却液通道出口流出，经由外部冷却液管道，进入设置于冷却液槽1外壁处的进液口3，从而进入冷却液槽1内。
冷却液槽1与电机冷却液通道连通的设计可使减速器和电机共用一套冷却液循环系统，节省汽车动力系统的散热成本。
在一个或一些实施例中，如图2所示，减速器壳体内设有导油筋9和集油槽10，导油筋9用于把减速器齿轮溅起的润滑油导入到集油槽10以及减速器壳体内待润滑零件和待冷却零件处；集油槽10内的润滑油通过油道11输送到电机壳体8内的待润滑零件和待冷却零件处，进而实现零件的润滑和冷却。其中，待冷却零件包括轴承、齿轮、电机线圈、电机转子等，待润滑零件包括轴承、齿轮、油封等。
在一个实施例中，如图2所示，减速器壳体内设有挡油板或挡油筋12，可减少减速器齿轮在转动时溅起润滑油的量，进而减少减速器齿轮搅油造成的动力损失。
以上所述，仅为本申请的具体实施方式，在本申请的上述教导下，本领域技术人员可以在上述实施例的基础上进行其他的改进或变形。本领域技术人员应该明白，上述的具体描述只是更好的解释本申请的目的，本申请的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种减速器壳体，其特征在于，所述减速器壳体的底部和/或润滑油流经的侧壁上设有液冷散热结构，所述液冷散热结构包括冷却液槽和盖板，所述盖板用于密封所述冷却液槽，所述冷却液槽两端分别设置有进液口和出液口；
    所述冷却液槽底部交替设有若干凸起结构和凹下结构，使所述冷却液槽底部内侧面和外侧面均呈波浪状设置，用于增大所述冷却液槽与所述减速器壳体内润滑液的接触面积。
  2. 根据权利要求1所述的减速器壳体，其特征在于，所述盖板或所述冷却液槽侧壁上设有若干与所述冷却液槽底部垂直设置的导流板，所述导流板的位置与所述凹下结构的位置对应，所述导流板与所述凸起结构配合，形成供冷却液流过的连续S型通道。
  3. 根据权利要求1所述的减速器壳体，其特征在于，所述冷却液槽底部的波浪状幅度从所述进液口到所述出液口梯次减小。
  4. 根据权利要求1所述的减速器壳体，其特征在于，所述液冷散热结构与所述减速器壳体一体铸造成型。
  5. 根据权利要求1-4任一项所述的减速器壳体，其特征在于，所述冷却液槽和所述盖板之间设有密封圈。
  6. 根据权利要求5所述的减速器壳体，其特征在于，所述冷却液槽和所述盖板通过螺栓/螺钉固定或焊接固定。
  7. 一种电驱动总成，所述电驱动总成包括电机组件和减速器组件，所述电机组件包括电机壳体，其特征在于，所述减速器组件包括如权利要求1-6任一项所述的减速器壳体。
  8. 根据权利要求7所述的电驱动总成，其特征在于，所述进液口与电机水套内部的冷却液通道连通；
    或所述进液口与电机冷却液通道出口连接。
  9. 根据权利要求7所述的电驱动总成，其特征在于，所述减速器壳体内设有导油筋和集油槽，所述导油筋用于把减速器齿轮溅起的润滑油导入到集油槽以及所述减速器壳体内待润滑零件和待冷却零件处；所述集油槽内的润滑油通过油道输送到所述电机壳体内的待润滑零件和待冷却零件处。
  10. 根据权利要求7-9任一项所述的电驱动总成，其特征在于，所述减速器壳体内设有挡油板或挡油筋。
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