WO2021042466A1 - 一种油水双冷的电驱动总成和新能源汽车 - Google Patents

一种油水双冷的电驱动总成和新能源汽车 Download PDF

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Publication number
WO2021042466A1
WO2021042466A1 PCT/CN2019/114070 CN2019114070W WO2021042466A1 WO 2021042466 A1 WO2021042466 A1 WO 2021042466A1 CN 2019114070 W CN2019114070 W CN 2019114070W WO 2021042466 A1 WO2021042466 A1 WO 2021042466A1
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WIPO (PCT)
Prior art keywords
oil
motor
water
reducer
housing
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Application number
PCT/CN2019/114070
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English (en)
French (fr)
Inventor
余平
李建文
杨旭东
Original Assignee
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 JP2022514173A priority Critical patent/JP7366245B2/ja
Priority to US17/635,759 priority patent/US20220263383A1/en
Priority to EP19944109.8A priority patent/EP4002656B1/en
Publication of WO2021042466A1 publication Critical patent/WO2021042466A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • 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
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
    • 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
    • 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • 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
    • 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
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • 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
    • 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
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • 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
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters

Definitions

  • the invention relates to the field of electric drive assembly manufacturing, in particular to an electric drive assembly with dual oil and water cooling and a new energy vehicle.
  • the motor reducer drive assembly as one of the core components of new energy automobiles, has a significant impact on the layout of the new energy automobile industry. Significant influence.
  • the drive assembly of the motor reducer for new energy vehicles has the characteristics of high speed and high power density, and has high requirements for reliability, cooling, and lubrication.
  • the cooling of the motor mainly relies on the circulating coolant in the water jacket to cool the stator, while the windings rely on natural heat dissipation for cooling, without direct cooling, which makes the motor unable to run for a long time at maximum power; and the cooling of the reducer relies on air cooling
  • the heat dissipation and cooling effect is not good, especially when the temperature rises quickly when running in the high speed range, it is easy to cause the premature failure of internal parts.
  • the present invention proposes a dual-cooled oil-water electric drive assembly and a new energy vehicle to solve or at least partially solve the above-mentioned technical problems.
  • an oil-water dual-cooled electric drive assembly including a motor assembly, a reducer assembly, a water cooling assembly, and an oil cooling assembly;
  • the motor assembly includes a motor housing, a motor shaft, and a stator;
  • the reducer The assembly includes a reducer housing and a first rotating shaft of the reducer; the reducer housing is arranged at the rear end of the motor housing;
  • the water cooling assembly includes a motor water jacket and a radiator, the motor water jacket is arranged on the motor housing, the upper part of the motor water jacket is provided with a first water inlet, and the lower rear end of the motor water jacket is provided with The first water outlet, the radiator is arranged at the lower end of the reducer housing, and the front and rear ends of the radiator are respectively provided with a second water inlet and a second water outlet;
  • the oil cooling assembly includes an oil delivery device, an oil delivery channel, and an oil return channel.
  • the oil delivery device is arranged at the bottom of the reducer housing, and the oil delivery channel communicates with the motor housing and the reducer housing.
  • the oil return channel is arranged at the bottom of the motor housing.
  • the oil delivery device is one or more gears, and/or, the oil delivery device is one or more nozzles.
  • the oil delivery passage includes a first oil delivery passage
  • the first oil delivery passage includes a first oil inlet, a first oil passage, an oil passage at the front end of the motor, and an inner hole of the front end shaft of the motor;
  • the oil inlet is provided on the front end surface of the reducer housing above the motor housing, and the first oil passage is provided above the motor housing and is connected to the front end oil passage of the motor and the front end shaft of the motor.
  • the inner hole is connected, and the bottom of the inner hole of the front end shaft of the motor is provided with a first oil outlet hole.
  • first oil outlet holes which are respectively arranged on the front side and the rear side of the front end bearing of the motor shaft, and the rear oil outlet holes correspond to the front end winding of the motor stator.
  • the oil delivery passage includes a second oil delivery passage, and the second oil delivery passage includes a second oil inlet, a first shaft inner hole of the reducer, and a second oil outlet;
  • the oil port is arranged at the rear end of the first rotating shaft of the reducer, the first rotating shaft of the reducer is arranged coaxially with the motor shaft, and the second oil outlet is arranged in front of the rear bearing of the motor shaft, And the position of the second oil outlet is directly opposite to the rear winding of the stator of the motor.
  • the oil delivery passage includes a third oil delivery passage, and the third oil delivery passage is an oil passage formed by a bearing at the rear end of the motor shaft.
  • ferromagnetic bodies are respectively provided at the oil inlet of the oil delivery channel, the bottom of the reducer housing, and the front side of the rear end bearing of the motor shaft.
  • the water-cooling assembly further includes an intermediate channel or water pipe provided at the front end of the reducer housing, and the intermediate channel or water pipe is in communication with the first water outlet and the second water inlet.
  • the radiator and the reducer housing are integrally molded, or the radiator is installed at the bottom of the reducer housing.
  • Another aspect of the present invention provides a new energy vehicle, including the oil-water dual-cooled electric drive assembly described in any one of the above.
  • the electric drive assembly of the present invention eliminates the high-speed oil seal on the motor shaft, reduces the number of parts, reduces the cost, avoids the friction loss of the oil seal, and improves the efficiency of the assembly;
  • the oil cooling assembly disclosed in the invention introduces the lubricating oil in the reducer into the front and rear windings of the motor through multiple channels, so that the temperature of the motor windings is reduced, and the motor can run for a long time at maximum power;
  • the water-cooling component of the present invention introduces the motor stator cooling liquid into the radiator of the reducer, cools the lubricating oil of the reducer, and ensures that the reducer has good heat dissipation performance at a high speed.
  • Figure 1 is a schematic structural diagram of an oil-water dual-cooled electric drive assembly in an embodiment of the present invention
  • Figure 2 is a perspective view of an oil-water dual-cooled electric drive assembly in an embodiment of the present invention.
  • the reference signs in the figure respectively indicate: 1. Motor water jacket; 2. Motor front winding; 3. Motor rear winding; 4. First water inlet; 5. Ferromagnetic body; 6. Reducer housing; 7. One oil inlet, 8, reducer cover, 9, rear bearing, 10, ferromagnetic body, 11, second oil inlet, 12, oil delivery device, 13, radiator, 14, second water outlet, 15, The first oil passage, 16, the front end of the motor oil passage, 17, the front bearing, 18, the inner hole of the front shaft of the motor, 19, the first oil outlet on the front side, 20, the first oil outlet on the rear side, 21, return Oil passage, 22, motor shaft, 23, second oil outlet, 24, ferromagnetic body, 25, intermediate bearing, 26, first water outlet, 27, oil return port, 28, first shaft inner hole, 29 , The second water inlet, 30, a strong magnetic body.
  • the left side in FIG. 1 is the front end or the front side
  • the right side is the back end or the rear side.
  • Embodiment 1 of the present invention discloses an oil-water dual-cooled electric drive assembly, which includes a motor assembly, a reducer assembly, a water-cooled assembly, and an oil-cooled assembly;
  • the motor assembly includes a motor housing, The motor shaft and the stator are provided with windings;
  • the reducer assembly includes a reducer housing 6 and a first rotating shaft of the reducer.
  • the reducer housing 6 is arranged at the rear end of the motor housing. Refer to Figure 1 and Figure 2 for the connection structure of the reducer housing and the motor housing.
  • the water-cooling component of this embodiment of the present invention includes a motor water jacket 1 and a radiator 13.
  • the motor water jacket 1 is sleeved on the motor housing, the upper part of the motor water jacket 1 is provided with a first water inlet 7, and the motor water jacket 1 is rear
  • a first water outlet 26 is arranged below the end
  • the radiator 13 is arranged at the lower end of the reducer housing 6, and the front and rear ends of the radiator 13 are respectively provided with a second water inlet 29 and a second water outlet 14.
  • the radiator can be connected with the motor water jacket, and the coolant in the motor water jacket is introduced into the radiator through a pipe or a channel arranged in the reducer housing, and the coolant flows back to the vehicle liquid storage tank after being circulated.
  • the radiator and the motor water jacket can also be connected to the vehicle liquid storage tank through pipes.
  • the oil cooling assembly of this embodiment of the present invention includes an oil delivery device 12, an oil delivery channel and an oil return channel 21.
  • the oil delivery device 12 is arranged at the bottom of the reducer housing 6 and the oil return channel 21 is arranged at the bottom of the motor housing.
  • the oil delivery device 12 can lift, splash or spray the lubricating oil at the bottom of the reducer housing to deliver the lubricating oil into the oil delivery channel.
  • the oil delivery channel can deliver the lubricating oil in the reducer housing 6 to the electric In the housing of the motor, the oil cooling and lubrication of the motor is realized, and the oil return channel 21 can return the lubricating oil to the housing of the reducer, thereby realizing a circulation of the lubricating oil.
  • a siphon port or an oil holding device may be provided at the entrance of the oil conveying channel to facilitate the lubricating oil to enter the oil conveying channel.
  • the oil delivery device 12 is one or more gears, and/or, the oil delivery device is one or more nozzles.
  • the oil delivery device may be one or more gears, which can splash the lubricating oil to realize oil delivery; the oil delivery device can also be a nozzle, and the nozzle is used to spray oil into the channel.
  • the oil delivery device can also It is another device that drives oil movement.
  • the oil delivery channel includes a first oil delivery channel, and the first oil delivery channel includes a first oil inlet 7, a first oil channel 15, a motor front end oil channel 16, and a motor front end shaft inner hole 18 ;
  • the first oil inlet 7 is provided on the front end of the reducer housing 6 located above the motor housing, the first oil passage 15 is provided above the motor housing, and is connected to the motor front end oil passage 16 and the motor front end shaft
  • the inner hole 18 is connected, and the bottom of the inner hole 18 of the front shaft of the motor is provided with a first oil outlet hole.
  • the first oil delivery passage mainly includes a first oil passage 15 in the upper part of the motor housing.
  • the first oil passage 15 may be parallel to the motor shaft, or may be spirally arranged in the motor housing.
  • the upper part; optionally, the first oil passage can be arranged inside the water jacket of the motor or outside the water jacket of the motor, so as to achieve further cooling of the oil; and then use gravity to remove the lubricating oil in the first oil passage 15 It is delivered to the oil passage at the front end of the motor, and the lubricating oil flows into the inner hole of the front shaft of the motor.
  • the first oil passage and the front end oil passage of the motor can be cast as built-in passages on the motor housing, or they can be external oil pipes.
  • the oil pipe connection avoids the complicated oil passage structure on the housing. , Which reduces the difficulty of casting the shell, and at the same time facilitates the layout on the whole vehicle.
  • first oil outlet holes which are respectively arranged on the front side and the rear side of the front end bearing of the motor shaft, and the rear oil outlet holes correspond to the front winding of the motor stator.
  • first oil outlet holes are provided on the front end shaft of the motor, which are respectively arranged in the front end bearing of the motor shaft.
  • the front oil outlet hole can lead oil into the front end bearing.
  • the rear oil outlet hole can directly face the stator front end winding.
  • the oil delivery channel further includes a second oil delivery channel
  • the second oil delivery channel includes a second oil inlet 11, a reducer first shaft inner hole 28 and a second oil outlet 23, the second oil inlet
  • the oil port 11 is arranged at the rear end of the first rotating shaft of the reducer
  • the first rotating shaft of the reducer is arranged coaxially with the motor shaft
  • the second oil outlet 23 is arranged on the front side of the rear bearing of the motor shaft
  • the second oil outlet 23 The position is opposite to the rear winding 3 of the electrode stator.
  • the second oil delivery channel conveys the lubricating oil into the motor housing through the first rotating shaft of the reducer arranged coaxially with the motor main shaft, wherein the first rotating shaft of the reducer is hollow and extends to at least the motor shaft located in the stator The position of the back-end winding. Similarly, due to the centrifugal force, the lubricating oil spills out through the second oil outlet hole, so as to cool the rear winding of the motor stator.
  • the motor shaft and the first rotating shaft of the reducer are coaxially designed, which improves the transmission efficiency, simplifies the structure of the electric drive assembly, and reduces the design and manufacturing costs.
  • the oil delivery passage includes a third oil delivery passage, and the third oil delivery passage is an oil passage formed by the bearing 25 at the rear end of the motor shaft.
  • the third oil delivery channel is a channel for cooling and lubricating the rear end bearing of the motor shaft.
  • a ferromagnetic body is respectively provided at the oil inlet of the oil delivery channel, the bottom of the reducer housing 6 and the front side of the rear end bearing 25 of the motor shaft.
  • the purpose of the ferromagnetic body is to absorb the iron filings in the lubricating oil, so as to purify the lubricating oil and reduce the damage to the bearing.
  • the water-cooling assembly further includes an intermediate channel or water pipe arranged at the front end of the reducer housing 6, the intermediate channel or water pipe is in communication with the first water outlet 26 and the second water inlet 29.
  • the water jacket of the motor and the radiator 13 are connected in series through the intermediate channel or the water pipe provided on the housing of the reducer.
  • the radiator 13 and the reducer housing 6 can be integrally cast, or the radiator 13 can be regarded as a separate part and then installed on the bottom of the reducer housing 6.
  • the present invention discloses an oil-water dual-cooled electric drive assembly.
  • the electric drive assembly includes: a motor assembly, a reducer assembly, a water-cooled assembly, and an oil-cooled assembly;
  • the motor assembly includes a motor housing Body, motor shaft and stator;
  • the reducer assembly includes a reducer housing and a first rotating shaft of the reducer, the reducer housing is arranged at the rear end of the motor housing;
  • the water-cooling assembly includes a motor water jacket and a heat sink
  • the motor water jacket is arranged on the motor housing, the upper part of the motor water jacket is provided with a first water inlet, the motor water jacket is provided with a first water outlet below the rear end, and the radiator is arranged at The lower end of the reducer housing, the front end and the rear end of the radiator are respectively provided with a second water inlet and a second water outlet;
  • the oil cooling assembly includes an oil delivery device, an oil delivery channel and an oil return channel.
  • the conveying device is arranged at the bottom of the reducer housing, and the oil return channel is arranged at the bottom of the motor housing.
  • This technical solution introduces the lubricating oil in the reducer to the front and rear windings of the motor through the multiple channels of the oil cooling assembly, the cooling performance of the motor is improved, and the motor shaft oil seal is eliminated, which reduces the cost of the drive assembly and improves Transmission efficiency.
  • this technical solution can use the water-cooling component to use the motor water jacket to cool the motor housing, and the radiator at the bottom of the reducer can cool the lubricating oil in the reducer housing, which solves the problem of the continuous high speed of the new energy reducer.
  • the heat dissipation problem during operation further improves the life and reliability of gears and bearings.
  • An embodiment of the present invention also discloses a new energy vehicle, including the oil-water dual-cooled electric drive assembly described in any one of the above.

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

Abstract

本发明公开了一种油水双冷的电驱动总成和新能源汽车，解决了新能源汽车减速器持续高速运转时的散热问题。所述电驱动总成包括电机组件、减速器组件、水冷组件和油冷组件。本发明公开的油冷组件具有三条油冷通道，能够将减速器内的润滑油导入电机的前后绕组，电机的冷却性能得到了提升，同时取消了电机轴油封，降低了驱动总成的成本，提高了传动效率；本发明公开的水冷组件通过水冷组件利用电机水套实现对电机壳体的冷却，并且通过减速器底部的散热器实现对减速器壳体内的润滑油的冷却，解决了新能源减速器持续高速运转时的散热问题，进而提高了齿轮及轴承的寿命和可靠性。

Description

一种油水双冷的电驱动总成和新能源汽车 技术领域
本发明涉及电驱动总成制造领域，具体涉及一种油水双冷的电驱动总成和新能源汽车。
发明背景
随着石油短缺、大气污染、国家能源安全等问题的日趋严重，新能源汽车产业高速发展，其中电机减速器驱动总成作为新能源汽车的核心零部件之一，对新能源汽车产业的布局具有重要影响。新能源汽车用电机减速器驱动总成具有高转速和高功率密度的特点，同时对可靠性、冷却、润滑等方面有着较高的要求。目前电机的冷却主要靠水套中的循环冷却液对定子进行冷却，而绕组依靠自然散热进行降温，没有直接进行冷却，致使电机无法在最大功率下长时间运行；并且减速器的冷却依靠风冷散热，冷却效果不佳，尤其在高转速区间运行时温升很快，容易造成内部零件的提前失效。
同时，终端客户对整车的续航里程及性能要求不断提高，要求电驱动系统兼具良好的动力性能和平顺性，在提高转矩密度的同时，设计一套高效的冷却系统迫在眉睫，以满足市场的发展需要。
发明内容
鉴于上述问题，本发明提出了一种油水双冷的电驱动总成和新能源汽车，以便解决或者至少部分解决上述存在的技术问题。
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油水双冷的电驱动总成，包括电机组件、减速器组件、水冷组件和油冷组件；所述电机组件包括电机壳体、电机轴和定子；所述减速器组件包括减速器壳体、减速器第一转轴；所述减速器壳体设置在电机壳体的后端；
所述水冷组件包括电机水套和散热器，所述电机水套设在所述电机壳体上，所述电机水套上部设置有第一进水口，所述电机水套下部后端设置有第一出水口，所述散热器设置在所述减速器壳体下端，所述散热器前端和后端分别设置有第二进水口和第二出水口；
所述油冷组件包括油输送装置、输油通道和回油通道，所述油输送装置设置在减速器壳体底部，所述输油通道连通所述电机壳体和所述减速器壳体的内腔，所述 回油通道设置在电机壳体底部。
可选的，所述油输送装置为一个或多个齿轮，和/或，所述油输送装置为一个或多个喷嘴。
可选的，所述输油通道包括第一输油通道，所述第一输油通道包括第一进油口、第一油道、电机前端油道、电机前端轴内孔；所述第一进油口设置在所述电机壳体上方的减速器壳体的前端面上，所述第一油道设置在电机壳体上方，且与所述电机前端油道以及所述电机前端轴内孔连通，所述电机前端轴内孔底部开设有第一出油孔。
可选的，所述第一出油孔至少为两个，分别设置在所述电机轴前端轴承的前侧和后侧，所述后侧出油孔与所述电机定子的前端绕组对应。
可选的，所述输油通道包括第二输油通道，所述第二输油通道包括第二进油口、减速器第一转轴轴内孔和第二出油孔；所述第二进油口设置于所述减速器第一转轴后端，所述减速器第一转轴与所述电机轴同轴设置，所述第二出油孔设置在所述电机轴后端轴承的前部，且所述第二出油孔的位置正对所述电机定子的后绕组。
可选的，所述输油通道包括第三输油通道，所述第三输油通道为电机轴后端轴承形成的油道。
可选的，所述输油通道的进油口处、所述减速器壳体底部以及所述电机轴后端轴承的前侧分别设置有强磁性体。
可选的，所述水冷组件还包括设置在减速器壳体前端的中间通道或水管，所述中间通道或水管与所述第一出水口和所述第二进水口连通。
可选的，所述散热器与所述减速器壳体一体铸造成型，或者所述散热器安装在所述减速器壳体底部。
本发明另一方面提供一种新能源汽车，包括上述任一项所述的油水双冷的电驱动总成。
本发明公开的油水双冷的电驱动总成的技术方案具有以下优点：
本发明的电驱动总成取消了电机轴上的高速油封，减少了零件数量，降低成本，同时避免了油封的摩擦损耗，提高了总成的效率；
本发明公开的油冷组件将减速器内的润滑油通过多条通道导入电机的前后绕组上，使得电机绕组温度降低，能够在最大功率下长时间运行；
本发明的水冷组件将电机定子冷却液导入到减速器的散热器中，对减速器润滑油进行冷却，保证减速器在高转速下具有良好的散热性能。
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。在附图中：
图1是本发明一个实施例中的油水双冷电驱动总成的结构示意图；
图2是本发明一个实施例中的油水双冷电驱动总成的立体图。
图中各附图标记分别表示：1、电机水套，2、电机前绕组，3、电机后绕组，4、第一进水口，5、强磁性体，6、减速器壳体，7、第一进油口，8、减速器盖，9、后轴承，10、强磁性体，11、第二进油口，12、油输装置，13、散热器，14、第二出水口，15、第一油道，16、电机前端油道，17、前轴承，18、电机前端轴内孔，19、前侧的第一出油孔，20、后侧的第一出油孔，21、回油通道，22、电机轴，23、第二出油孔，24、强磁性体，25、中间轴承，26、第一出水口，27、回油口，28、第一转轴轴内孔，29、第二进水口，30、强磁性体。
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。
为了更清楚地描述本发明的技术方案，特规定图1中左侧为前端或前侧，右侧为后端或后侧。
实施例1
如图1和图2所示，本发明实施例1公开了一种油水双冷的电驱动总成，包括电机组件、减速器组件、水冷组件和油冷组件；电机组件包括电机壳体、电机轴和定子，定子上设置有绕组；减速器组件包括减速器壳体6、减速器第一转轴，减速器壳体6设置在电机壳体的后端。减速器壳体和电机壳体的连接结构可参见图1和 图2。
本发明该实施例的水冷组件包括电机水套1和散热器13，电机水套1套设在电机壳体上，电机水套1的上部设置有第一进水口7，电机水套1后端下方设置第一出水口26，散热器13设置在减速器壳体6下端，散热器13前端和后端分别设置有第二进水口29和第二出水口14。其中，散热器可以与电机水套连通，通过管道或设置在减速器壳体内的通道将电机水套内的冷却液导入散热器内，冷却液经过循环后流回车辆储液罐。当然，散热器和电机水套也可以分别通过管道连接车辆储液罐。
本发明该实施例的油冷组件包括油输送装置12、输油通道和回油通道21，油输送装置12设置在减速器壳体6底部，回油通道21设置在电机壳体底部。油输送装置12能够将减速器壳体底部的润滑油扬起、溅起或者喷射，从而将润滑油送入输油通道中，输油通道能够将减速器壳体6内的润滑油输送到电机壳体内，从而实现对电机的油冷和润滑，而回油通道21则能够将润滑油回流到减速器壳体内，从而实现润滑油的一个循环。
其中，在所述输油通道的入口可以设置虹吸口或者容油装置，以方便所述润滑油进入输油通道内部。
进一步地，在一个实施例中，油输送装置12为一个或多个齿轮，和/或，油输送装置为一个或多个喷嘴。所述油输送装置可以为一个或多个齿轮，齿轮能够将润滑油溅起，从而实现油的输送；油输送装置还可以是喷嘴，利用喷嘴将油喷入通道内，当然油输送装置还可以是其他的驱动油运动的装置。
在一个优选的实施例中，该输油通道包括第一输油通道，第一输油通道包括第一进油口7、第一油道15、电机前端油道16、电机前端轴内孔18；第一进油口7设置在位于电机壳体上方的减速器壳体6的前端面上，第一油道15设置在电机壳体上方，且与电机前端油道16以及电机前端轴内孔18连通，电机前端轴内孔18底部开设有第一出油孔。
在本实施例中，所述第一输油通道主要包括在电机壳体的上部第一油道15，该第一油道15可以平行于电机主轴，也可以螺旋地设置在电机壳体上部；可选的，第一油道可以设置在电机水套内部，也可以设置在电机水套的外部，从而实现对油的进一步冷却；然后利用重力作用将第一油道15内的润滑油输送到电机前端的油道内，进而润滑油流入电机前端轴内孔中。
在该实施例中，所述第一油道和电机前端油道可以是铸造为电机壳体上的内置通道，也可以是外置的油管，油管连接避免了壳体上复杂的油道结构，降低了壳体的铸造难度，同时便于在整车上进行布置。
进一步地，第一出油孔至少为两个，分别设置在电机轴前端轴承的前侧和后侧，后侧出油孔与电机定子的前端绕组对应。为了使得第一输油通道输送的润滑油实现对电机前端轴承和定子前端绕组线圈的冷却，在电机前端轴上至少设置两个或两组第一出油孔，分别设置在电机轴前端轴承的前侧和后侧，该前侧出油孔能够将油导入前端轴承中，该后侧出油孔可正对定子前端绕组，当电机轴转动时，由于离心力的作用，电机前端轴内孔中的润滑油就会通过第一出油孔飞洒出去，从而实现对绕组的冷却。
在一个实施例中，输油通道还包括第二输油通道，第二输油通道包括第二进油口11、减速器第一转轴轴内孔28和第二出油孔23，第二进油口11设置于减速器第一转轴后端，减速器第一转轴与电机轴同轴设置，第二出油孔23设置在电机轴后端轴承的前侧，且第二出油孔23的位置正对电极定子的后绕组3。
该第二输油通道是通过与电机主轴同轴设置的减速器第一转轴将润滑油输送到电机壳体内，其中该减速器第一转轴为中空设置，并且至少延伸到电机轴的位于定子后端绕组的位置。同样，由于离心力的作用，润滑油通过第二出油孔飞洒而出，从而实现对电机定子后端绕组的冷却。
在该实施例中，电机轴与减速器第一转轴为同轴的设计，提高了传动的效率，简化了电驱动总成结构，降低了设计和制造成本。
在一个实施例中，输油通道包括第三输油通道，第三输油通道为电机轴后端轴承25形成的油道。第三输油通道是对电机轴后端轴承进行冷却和润滑的通道。
优选的，输油通道的进油口处、减速器壳体6底部以及电机轴后端轴承25的前侧分别设置有强磁性体。设置强磁性体的目的在于吸附润滑油中的铁屑，从而净化润滑油，减少对轴承的损伤。
在一个实施例中，水冷组件还包括设置在减速器壳体6前端的中间通道或水管，中间通道或水管与第一出水口26和第二进水口29连通。通过减速器壳体上设置的中间通道或者设置水管，实现电机水套和散热器13的串联。
在一个实施例中，散热器13与减速器壳体6可以是一体铸造成型，也可以是视散热器13为一个单独零件，将其后安装在减速器壳体6底部。
综上所述，本发明公开的一种油水双冷的电驱动总成，所述电驱动总成包括：电机组件、减速器组件、水冷组件和油冷组件；所述电机组件包括电机壳体、电机轴和定子；所述减速器组件包括减速器壳体、减速器第一转轴，所述减速器壳体设置在电机壳体的后端；所述水冷组件包括电机水套和散热器；所述电机水套设在所述电机壳体上，所述电机水套上部设置有第一进水口，所述电机水套后端下方设置第一出水口，所述散热器设置在所述减速器壳体下端，所述散热器前端和后端分别设置有第二进水口和第二出水口；所述油冷组件包括油输送装置、输油通道和回油通道，所述油输送装置设置在减速器壳体底部，所述回油通道设置在电机壳体底部。该技术方案通过油冷组件的多条通道将减速器内的润滑油导入到电机的前后绕组，电机的冷却性能得到了提升，同时取消了电机轴油封，降低了驱动总成的成本，提高了传动效率。同时，该技术方案能够通过水冷组件利用电机水套实现对电机壳体的冷却，并且通过减速器底部的散热器实现对减速器壳体内的润滑油的冷却，解决了新能源减速器持续高速运转时的散热问题，进而提高了齿轮及轴承的寿命和可靠性。
实施例2
本发明的实施例还公开了一种新能源汽车，包括上述任一项所述的油水双冷的电驱动总成。
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. 一种油水双冷的电驱动总成，其特征在于，所述电驱动总成包括电机组件、减速器组件、水冷组件和油冷组件；所述电机组件包括电机壳体、电机轴和定子；所述减速器组件包括减速器壳体、减速器第一转轴；所述减速器壳体设置在电机壳体的后端；
    所述水冷组件包括电机水套和散热器，所述电机水套设在所述电机壳体上，所述电机水套上部设置有第一进水口，所述电机水套下部后端设置有第一出水口，所述散热器设置在所述减速器壳体下端，所述散热器前端和后端分别设置有第二进水口和第二出水口；
    所述油冷组件包括油输送装置、输油通道和回油通道，所述油输送装置设置在减速器壳体底部，所述输油通道连通所述电机壳体和所述减速器壳体的内腔，所述回油通道设置在电机壳体底部。
  2. 如权利要求1所述的电驱动总成，其特征在于，所述油输送装置为一个或多个齿轮，和/或，所述油输送装置为一个或多个喷嘴。
  3. 如权利要求1所述的电驱动总成，其特征在于，所述输油通道包括第一输油通道，所述第一输油通道包括第一进油口、第一油道、电机前端油道、电机前端轴内孔；所述第一进油口设置在所述电机壳体上方的减速器壳体的前端面上，所述第一油道设置在电机壳体上方，且与所述电机前端油道以及所述电机前端轴内孔连通，所述电机前端轴内孔底部开设有第一出油孔。
  4. 如权利要求3所述的电驱动总成，其特征在于，所述第一出油孔至少为两个，分别设置在所述电机轴前端轴承的前侧和后侧，后侧第一出油孔与所述电机定子的前端绕组对应。
  5. 如权利要求1所述的电驱动总成，其特征在于，所述输油通道包括第二输油通道，所述第二输油通道包括第二进油口、减速器第一转轴轴内孔和第二出油孔；所述第二进油口设置于所述减速器第一转轴后端，所述减速器第一转轴与所述电机轴同轴设置，所述第二出油孔设置在所述电机轴后端轴承的前部，且所述第二出油孔的位置正对所述电机定子的后绕组。
  6. 如权利要求1所述的电驱动总成，其特征在于，所述输油通道包括第三输油通道，所述第三输油通道为电机轴后端轴承形成的油道。
  7. 如权利要求1所述的电驱动总成，其特征在于，所述输油通道的进油口处、 所述减速器壳体底部以及所述电机轴后端轴承的前侧分别设置有强磁性体。
  8. 如权利要求1所述的电驱动总成，其特征在于，所述水冷组件还包括设置在减速器壳体前端的中间通道或水管，所述中间通道或水管与所述第一出水口和所述第二进水口连通。
  9. 如权利要求1所述的电驱动总成，其特征在于，所述散热器与所述减速器壳体一体铸造成型，或者所述散热器安装在所述减速器壳体底部。
  10. 一种新能源汽车，包括权利要求1-9任一项所述的油水双冷的电驱动总成。
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