WO2023010947A1 - 一种电驱动总成的冷却润滑装置和电驱动总成 - Google Patents

一种电驱动总成的冷却润滑装置和电驱动总成 Download PDF

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WO2023010947A1
WO2023010947A1 PCT/CN2022/093089 CN2022093089W WO2023010947A1 WO 2023010947 A1 WO2023010947 A1 WO 2023010947A1 CN 2022093089 W CN2022093089 W CN 2022093089W WO 2023010947 A1 WO2023010947 A1 WO 2023010947A1
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Prior art keywords
oil
housing
assembly
cooling
oil pump
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PCT/CN2022/093089
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English (en)
French (fr)
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李建文
刘洋
潘发玉
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精进电动科技股份有限公司
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Priority to EP22851665.4A priority Critical patent/EP4361470A1/en
Publication of WO2023010947A1 publication Critical patent/WO2023010947A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R17/00—Arrangements or adaptations of lubricating systems or devices
    • B60R17/02—Systems, e.g. central lubrication systems
    • 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
    • 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
    • F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
    • F16H57/0404—Lubricant filters
    • 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
    • F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
    • 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
    • F16H57/042—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
    • F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
    • 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
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0441—Arrangements of pumps
    • 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
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • 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
    • H02K9/19—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 belongs to the technical field of cooling and lubrication of an electric drive assembly, and in particular relates to a cooling and lubrication device for an electric drive assembly and the electric drive assembly.
  • the requirements for vehicle safety, power, energy consumption, noise and other related performance are getting higher and higher.
  • the electric drive assembly of the car needs to have technical characteristics such as high power, high torque, high speed, and high efficiency. higher requirements.
  • the lubricating and cooling of the reducer of the electric drive assembly of the automobile is usually realized by the way that the gears agitate the lubricating oil inside the housing to make it splash.
  • the position of the friction pair is passively lubricated, and the flow of lubricating oil takes away the heat generated by the rotating parts during operation to achieve passive cooling.
  • this passive splash lubrication and cooling method cannot sufficiently lubricate and take away a large amount of heat generated by the reducer at high speed and high torque output in time.
  • the cooling method of the motor is realized by the coolant flowing through the water channel of the stator housing to take away the heat generated when the motor is running. This conventional cooling method can only reduce or stabilize the temperature in the local area of the motor.
  • the motor coils in the motor The temperature of the rotor and rotor is much higher than that of the stator. Due to the limitation of the motor structure and conventional cooling methods, it cannot fully and quickly remove the heat generated by the motor under long-term, high-power, high-torque, and high-speed operating conditions.
  • the present invention discloses a cooling and lubricating device for an electric drive assembly and an electric drive assembly to overcome the above problems or at least partly solve the above problems.
  • a cooling and lubricating device for an electric drive assembly includes a motor assembly and a reducer assembly
  • the motor assembly includes a motor housing
  • the reducer assembly includes a reducer housing
  • the cooling and lubricating device includes an oil pump assembly, an oil pump channel and an oil return channel
  • the oil pump passage includes several oil distribution passages, and the oil outlet positions of each oil distribution passage respectively correspond to the parts to be cooled and the parts to be lubricated in the motor housing, and the parts to be cooled and the parts to be lubricated in the reducer housing. parts to be lubricated;
  • the oil pump assembly includes an oil inlet and an oil outlet, the oil inlet communicates with the first casing, the oil outlet connects with the pump oil channel, and the oil pump assembly is used to put the first Lubricating oil in a casing is pumped into the pump oil channel, and delivered to the parts to be cooled and the parts to be lubricated through each of the oil distribution channels;
  • the oil return channel is arranged at the bottom of the second housing, and is used to return the lubricating oil in the second housing to the first housing;
  • the first casing is a motor casing
  • the second casing is a reducer casing
  • the first casing is a reducer casing
  • the second casing is a motor casing
  • cooling and lubricating device also includes an oil filter assembly
  • the oil filter assembly is arranged at the bottom of the first housing for filtering lubricating oil.
  • oil filter assembly is a detachable oil filter.
  • cooling and lubricating device also includes a cooler assembly
  • the cooler assembly is arranged on the oil passage between the oil pump assembly and the oil filter assembly or between the oil filter assembly and the first housing, and is used for cooling the lubricating oil in the oil passage.
  • the oil pump assembly includes a mechanical oil pump
  • the mechanical oil pump is arranged in the reducer housing and is in transmission connection with the reducer assembly.
  • the reducer assembly also includes an intermediate shaft
  • the mechanical oil pump is in transmission connection with the intermediate shaft.
  • the oil pump assembly includes an electronic oil pump and an electronic control unit
  • the electronic oil pump is arranged at the bottom of the motor housing or the transmission housing, and the electronic control unit is used to control the operation of the electronic oil pump.
  • the oil pump assembly also includes several temperature sensors;
  • Each of the temperature sensors is arranged in the motor casing and/or the reducer casing, and the electronic control unit controls the operation of the electronic oil pump according to the temperature detected by the temperature sensors.
  • the oil pump assembly also includes a rotational speed sensor
  • the rotation speed sensor is used to detect the rotation speed of the motor or the reducer, and transmit the detected rotation speed to the electronic control unit, and the electronic control unit controls the operation of the electronic oil pump according to the rotation speed of the motor or the reducer .
  • Another aspect of the present application discloses an electric drive assembly, which uses the cooling and lubricating device described in any one of the above to cool and lubricate the motor and the reducer.
  • the oil pump assembly pumps the lubricating oil in the reducer housing or the motor housing into the pump oil channel, and sends it to the parts to be cooled and the parts to be lubricated through the oil distribution channels, so as to realize the lubrication of the parts to be cooled and lubricated.
  • the active and directional cooling and lubrication of the parts to be lubricated has higher cooling and lubrication efficiency; and the cooling and lubrication device realizes the integration of cooling and lubrication of the motor and reducer, making the structure of the electric drive assembly more compact.
  • Fig. 1 is a schematic structural diagram of a cooling and lubricating device for an electric drive assembly in an embodiment of the present application
  • Fig. 2 is a structural schematic diagram of another cooling and lubricating device for an electric drive assembly in an embodiment of the present application.
  • Oil distribution channel 1. Oil inlet; 3. Oil outlet; 4. Oil passage; 5. Intermediate shaft.
  • One embodiment of the present application discloses a cooling and lubricating device for an electric drive assembly
  • the electric drive assembly includes a motor assembly and a reducer assembly
  • the motor assembly includes a motor housing
  • the reducer assembly includes a reducer housing
  • the reducer housing The body is arranged at the rear end of the motor housing.
  • the cooling lubricating device includes an oil pump assembly, an oil pump passage and an oil return passage.
  • the pump oil channel includes several oil distribution channels 1.
  • the oil distribution channel 1 can be an oil pipe or an oil circuit.
  • the oil circuit can be directly cast on the motor casing and on the reducer housing.
  • the oil outlet positions of each oil distribution channel 1 respectively correspond to parts to be cooled and parts to be lubricated in the motor housing, and parts to be cooled and lubricated in the housing of the reducer.
  • the oil pump assembly includes an oil inlet 2 and an oil outlet 3.
  • the oil inlet 2 communicates with the first housing so that the lubricating oil in the first housing can enter the pump oil assembly through the oil inlet 2, and the oil outlet 3 communicates with the pump
  • the oil channel is connected, and the oil pump assembly pumps the lubricating oil in the first housing into the oil pump channel, and sends it to the parts to be cooled and the parts to be lubricated through the oil distribution channels 1, so as to realize the cooling of the parts to be cooled and the parts to be lubricated
  • the parts to be cooled include bearings, gears, motor coils, motor rotors, etc.
  • the parts to be lubricated include bearings, gears, oil seals, etc.
  • the oil outlet position of one or more oil distribution channels 1 corresponds to the motor coil, so as to realize the directional and active cooling of the motor coil by the lubricating oil, and promptly and quickly take away the heat generated by the motor coil during operation, avoiding or reducing the risk of damage caused by the vehicle under special working conditions
  • the high working temperature of the lower motor leads to early failure, which improves the power density of the motor and the efficiency of the whole machine.
  • the oil return passage is arranged at the bottom of the second casing, so that the lubricating oil in the second casing can flow back into the first casing.
  • the first casing is a motor casing
  • the second casing is a reducer casing
  • the first casing is a reducer casing
  • the second casing is a motor casing.
  • the height of the bottom of the first casing is lower than that of the bottom of the second casing.
  • the flow path of lubricating oil in the reducer housing is: the lubricating oil at the bottom of the reducer housing is pumped into the pump oil through the pump oil assembly Channels, and then transported to the parts to be cooled and lubricated in the reducer housing through each oil distribution channel 1, and the lubricating oil returns to the bottom of the reducer housing due to gravity after completing lubrication and cooling.
  • the flow path of lubricating oil in the motor housing is: the lubricating oil at the bottom of the reducer housing is pumped into the pump oil channel through the oil pump assembly, and then delivered to the parts to be cooled and the parts to be lubricated in the motor housing through each oil distribution channel 1 At the position, after lubricating and cooling, the lubricating oil returns to the bottom of the motor housing due to gravity, and the lubricating oil finally returns to the reducer housing through the oil return channel.
  • the cooling and lubricating device of this embodiment by setting the oil pump assembly and several oil distribution channels, and making the oil outlet positions of each oil distribution channel correspond to the parts to be cooled and the parts to be lubricated in the motor housing, and the deceleration
  • the oil pump assembly pumps the lubricating oil in the reducer housing or the motor housing into the pump oil channel, and delivers it to the parts to be cooled and lubricated through the oil distribution channels to realize Active and directional cooling and lubrication of the parts to be cooled and lubricated, the cooling and lubrication efficiency is higher, which can meet the needs of the vehicle electric drive assembly when it works for a long time, high power, high torque, and high speed under various working conditions
  • the cooling and lubrication requirements increase the reliability of the vehicle; and the cooling and lubrication device realizes the integration of cooling and lubrication of the motor and reducer, making the structure of the electric drive assembly more compact and occupy
  • the cooling and lubricating device further includes an oil filter assembly.
  • the oil filter assembly is arranged at the bottom of the first housing for filtering lubricating oil. Before the lubricating oil in the first casing enters the oil pump assembly, it can be filtered through the oil filter assembly to filter out the particles in the lubricating oil, preventing the particles from blocking the oil distribution channel 1 and affecting the normal operation of the motor and reducer.
  • the oil filter assembly is arranged at the bottom of the first casing, on the one hand, the space at the bottom of the first casing is fully utilized, and on the other hand, the lubricating oil at the bottom of the first casing can enter the oil filter assembly under the action of gravity for filtering.
  • the oil filter assembly is a detachable oil filter, and the filtering effect of the oil filter assembly is ensured by replacing the filter element.
  • the cooling and lubricating device in order to further enhance the cooling effect on the electric drive assembly, further includes a cooler assembly.
  • the cooler assembly is arranged on the oil passage 4 between the oil pump assembly and the oil filter assembly or between the oil filter assembly and the first housing, and is used for cooling the lubricating oil in the oil passage 4 .
  • the circulating coolant can be set in the cooler assembly, and the lubricating oil in the oil passage 4 realizes the heat exchange between the lubricating oil and the cooling liquid through the cooler assembly, taking away the heat in the electric drive assembly, and further improving the performance of the electric drive assembly. thermal performance.
  • the oil pump assembly includes a mechanical oil pump.
  • the mechanical oil pump is set in the reducer housing and is connected with the reducer assembly. When the reducer is rotating, it can directly drive the mechanical oil pump to work without setting up an external control unit, and the cost of the mechanical oil pump is low.
  • the reducer assembly further includes an intermediate shaft 5 .
  • the mechanical oil pump is in transmission connection with the intermediate shaft 5, and the speed control of the mechanical oil pump is realized through the intermediate shaft 5.
  • the oil pump assembly includes an electronic oil pump and an electronic control unit.
  • the electronic oil pump is arranged at the bottom of the motor casing or the transmission casing to save space, and the electronic control unit can control the operation of the electronic oil pump as required.
  • the oil pump assembly further includes several temperature sensors.
  • Each temperature sensor is arranged in the motor housing and/or the reducer housing, each temperature sensor transmits the detected temperature to the electronic control unit, and the electronic control unit controls the operation of the electronic oil pump according to the temperature detected by the temperature sensor.
  • a temperature sensor is installed at the motor coil to detect the temperature of the motor coil. When the temperature of the motor coil reaches a certain value, the control unit controls the operation of the electronic oil pump to cool down the motor coil by pumping lubricating oil to the motor coil.
  • the oil pump assembly further includes a rotational speed sensor.
  • the speed sensor is used to detect the speed of the motor or reducer, and transmit the detected speed to the electronic control unit.
  • the electronic control unit controls the electronic oil pump to work according to the speed of the motor or reducer. When setting the value, the electronic control unit controls the operation of the electronic oil pump to realize the cooling and lubrication of the electric drive assembly.
  • An embodiment of the present application discloses an electric drive assembly.
  • the electric drive assembly uses the cooling and lubricating device in any of the above embodiments to cool and lubricate the motor and reducer.
  • the electric drive assembly has good cooling and lubrication performance Advantages, can achieve high torque and high speed output.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • General Details Of Gearings (AREA)

Abstract

一种电驱动总成的冷却润滑装置，其中，冷却润滑装置包括泵油组件、泵油通道和回油通道；泵油通道包括若干分油通道（1），各分油通道的出油位置分别对应电机壳体内的待冷却零件和待润滑零件，以及减速器壳体内的待冷却零件和待润滑零件；泵油组件用于把第一壳体内的润滑油泵入泵油通道，通过各分油通道输送到待冷却零件和待润滑零件处；回油通道设置在第二壳体底部，用于使第二壳体内的润滑油回流到第一壳体内；其中，第一壳体为电机壳体，第二壳体为减速器壳体；或者，第一壳体为减速器壳体，第二壳体为电机壳体。该冷却润滑装置可实现对待冷却零件和待润滑零件的主动且定向冷却和润滑，冷却和润滑效率更高。还涉及一种电驱动总成。

Description

一种电驱动总成的冷却润滑装置和电驱动总成
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202110887039.X，发明名称为“一种电驱动总成的冷却润滑装置和电驱动总成”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
本发明属于电驱动总成冷却润滑技术领域，特别涉及一种电驱动总成的冷却润滑装置和电驱动总成。
背景技术
随着新能源汽车不断的发展，对汽车的安全、动力、能耗、噪音等相关性能要求越来越高。为了使汽车能适应各种复杂的路况，汽车的电驱动总成需要具有高功率、高扭矩、高转速、高效率等技术特性，同时对电驱动总成中电机和减速器的润滑和冷却提出了更高的要求。
目前，汽车电驱动总成的减速器润滑和冷却通常通过齿轮搅动壳体内部润滑油使其飞溅的方式实现，减速器的润滑油随着齿轮搅动流动或飞溅至齿轮、轴承、油封等旋转件摩擦副位置进行被动润滑，润滑油的流动带走旋转件运转时产生的热量，实现被动冷却。然而这种被动飞溅润滑和冷却方式不能充分润滑以及及时带走减速器在高转速、高扭矩输出时产生的大量热量。另外，电机的冷却方式是通过冷却液流经定子壳体水道带走电机运转时产生的热量实现，这种常规的冷却方式只能降低或稳定电机局部范围内的温度，然而电机内的电机线圈和转子的温度远高于定子温度，由于电机结构和常规的冷却方式限制，不能充分和快速带走却电机在长时间、高功率、高扭矩、高转速工况下产生的热量。
发明内容
针对上述问题，本发明公开了一种电驱动总成的冷却润滑装置和电驱动总成，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，本发明采用以下技术方案：
本申请一方面公开一种电驱动总成的冷却润滑装置，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减速器壳体，所述冷却润滑装置包括泵油组件、泵油通道和回油通道；
所述泵油通道包括若干分油通道，各所述分油通道的出油位置分别对应所述电机壳体内的待冷却零件和待润滑零件，以及所述减速器壳体内的待冷却零件和待润滑零件；
所述泵油组件包括进油口和出油口，所述进油口与第一壳体连通，所述出油口与所述泵油通道连接，所述泵油组件用于把所述第一壳体内的润滑油泵入所述泵油通道，通过各所述分油通道输送到所述待冷却零件和所述待润滑零件处；
所述回油通道设置在所述第二壳体底部，用于使所述第二壳体内的润滑油回流到所述第一壳体内；
其中，第一壳体为电机壳体，第二壳体为减速器壳体；或者，第一壳体为减速器壳体，第二壳体为电机壳体。
进一步地，所述冷却润滑装置还包括滤油组件；
所述滤油组件设置在所述第一壳体的底部，用于润滑油的过滤。
进一步地，所述滤油组件为可拆式油滤器。
进一步地，所述冷却润滑装置还包括冷却器组件；
所述冷却器组件设置在所述泵油组件和所述滤油组件之间或所述滤油组件与所述第一壳体之间的油道上，用于所述油道内润滑油的冷却。
进一步地，所述泵油组件包括机械油泵；
所述机械油泵设置在所述减速器壳体内，与所述减速器组件传动连接。
进一步地，所述减速器组件还包括中间轴；
所述机械油泵与所述中间轴传动连接。
进一步地，所述泵油组件包括电子油泵和电控单元；
所述电子油泵设置在所述电机壳体或所述变速器壳体的底部，所述电控单元用于控制所述电子油泵工作。
进一步地，所述泵油组件还包括若干个温度传感器；
各所述温度传感器设置在所述电机壳体和/或所述减速器壳体内，所述电控单元根据所述温度传感器检测的温度控制所述电子油泵工作。
进一步地，所述泵油组件还包括转速传感器；
所述转速传感器用于检测电机或减速器的转速，并把检测到的转速传递给所述电控单元，所述电控单元根据所述电机或所述减速器的转速控制所述电子油泵工作。
本申请另一方面公开一种电驱动总成，所述电驱动总成使用如上述任一项所述的冷却润滑装置进行电机和减速器的冷却及润滑。
本发明的优点及有益效果是：
本申请的冷却润滑装置中，通过设置泵油组件和若干分油通道，且使各分油通道的出油位置分别对应电机壳体内的待冷却零件和待润滑零件，以及减速器壳体内的待冷却零件和待润滑零件，泵油组件把减速器壳体或电机壳体内的润滑油泵入泵油通道，通过各分油通道输送到待冷却零件和待润滑零件处，实现对待冷却零件和待润滑零件的主动且定向的冷却和润滑，冷却和润滑效率更高；并且该冷却润滑装置实现了电机与减速器冷却润滑一体化，使电驱动总成结构更为紧凑。
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为本申请一个实施例中一种电驱动总成的冷却润滑装置的结构示意图；
图2为本申请一个实施例中另一种电驱动总成的冷却润滑装置的结构示意图。
图中：1、分油通道；2、进油口；3、出油口；4、油道；5、中间轴。
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，详细说明本申请各实施例提供的技术方案。
本申请一个实施例中公开一种电驱动总成的冷却润滑装置，电驱动总成包括电 机组件和减速器组件，电机组件包括电机壳体，减速器组件包括减速器壳体，减速器壳体设置在电机壳体的后端。该冷却润滑装置包括泵油组件、泵油通道和回油通道。
如图1～图2所示，泵油通道包括若干分油通道1，分油通道1可为油管或油路，当分油通道1为油路时，油路可以直接铸造在电机壳体和减速器壳体上。各分油通道1的出油位置分别对应电机壳体内的待冷却零件和待润滑零件，以及减速器壳体内的待冷却零件和待润滑零件。
泵油组件包括进油口2和出油口3，进油口2与第一壳体连通，使第一壳体内的润滑油可通过进油口2进入泵油组件，出油口3与泵油通道连接，泵油组件把第一壳体内的润滑油泵入泵油通道，通过各分油通道1输送到待冷却零件和待润滑零件处，针对性地实现对待冷却零件的冷却以及对待润滑零件的润滑；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。
例如：一个或多个分油通道1的出油位置对应电机线圈，实现润滑油对电机线圈的定向主动冷却，及时快速地带走电机线圈工作时产生热量，避免或降低因整车在特殊工况下电机产生过高的工作温度导致早期失效，提升电机功率密度和整机效率。
回油通道设置在第二壳体底部，使第二壳体内的润滑油回流到第一壳体内。
其中，第一壳体为电机壳体，第二壳体为减速器壳体；或者，第一壳体为减速器壳体，第二壳体为电机壳体。第一壳体底部高度低于第二壳体底部高度。
当第一壳体为减速器壳体，第二壳体为电机壳体时，润滑油在减速器壳体内的流动路径为：减速器壳体底部的润滑油通过泵油组件泵入泵油通道，然后通过各分油通道1输送到减速器壳体内待冷却零件和待润滑零件处，润滑油在完成润滑和冷却作用后，由于重力作用回到减速器壳体底部。润滑油在电机壳体内的流动路径为：减速器壳体底部的润滑油通过泵油组件泵入泵油通道，然后通过各分油通道1输送到电机壳体内待冷却零件和待润滑零件处，润滑油在完成润滑和冷却作用后，由于重力作用回到电机壳体底部，润滑油最后通过回油通道回到减速器壳体内。
综上，本实施例的冷却润滑装置中，通过设置泵油组件和若干分油通道，且使各分油通道的出油位置分别对应电机壳体内的待冷却零件和待润滑零件，以及减速器壳体内的待冷却零件和待润滑零件，泵油组件把减速器壳体或电机壳体内的润滑 油泵入泵油通道，通过各分油通道输送到待冷却零件和待润滑零件处，实现对待冷却零件和待润滑零件的主动且定向的冷却和润滑，冷却和润滑效率更高，可满足车辆电驱动总成在各种工况下长时间、高功率、高扭矩、高转速工作时的冷却和润滑需求，增加了车辆的可靠性；并且该冷却润滑装置实现了电机和减速器冷却润滑一体化，使电驱动总成结构更为紧凑，占用空间更小。
在一个实施例中，如图1～图2所示，冷却润滑装置还包括滤油组件。
滤油组件设置在第一壳体的底部，用于润滑油的过滤。第一壳体内的润滑油在进入泵油组件前，可先通过滤油组件进行过滤，滤除润滑油中的颗粒，防止颗粒堵塞分油通道1，以及影响电机和减速器正常运行。滤油组件设置在第一壳体的底部，一方面充分利用了第一壳体底部的空间，另一方面可以使第一壳体底部的润滑油在重力作用下进入滤油组件进行过滤。
进一步地，为了防止滤油组件因为长时间使用导致的过滤效果差，滤油组件为可拆式油滤器，通过拆换滤芯来保证滤油组件的过滤效果。
在一个实施例中，为了进一步增强对电驱动总成的冷却效果，冷却润滑装置还包括冷却器组件。
冷却器组件设置在泵油组件和滤油组件之间或滤油组件与第一壳体之间的油道4上，用于油道4内润滑油的冷却。却器组件内可设置循环的冷却液，油道4内的润滑油通过冷却器组件实现润滑油和冷却液间的热量交换，带走电驱动总成内的热量，进一步提高电驱动总成的散热性能。
在一个实施例中，泵油组件包括机械油泵。
机械油泵设置在减速器壳体内，与减速器组件传动连接，减速器在转动工作时，可以直接驱动机械油泵工作，无需设置而外的控制单元，并且机械油泵成本低廉。
在一个实施例中，如图1所示，减速器组件还包括中间轴5。
机械油泵与中间轴5传动连接，通过中间轴5实现机械油泵转速的控制。
在一个或一些实施例中，泵油组件包括电子油泵和电控单元。
电子油泵设置在电机壳体或变速器壳体的底部，节省空间，电控单元可根据需要控制电子油泵工作。
在一个或一些实施例中，泵油组件还包括若干个温度传感器。
各温度传感器设置在电机壳体和/或减速器壳体内，各温度传感器把检测到的温度传给电控单元，电控单元根据温度传感器检测的温度控制电子油泵工作。例如， 温度传感器设置在电机线圈处，用于检测电机线圈的温度，当电机线圈的温度达到一定值时，控制单元控制电子油泵工作，通过把润滑油泵到电机线圈处，实现给电机线圈降温。
在一个或一些实施例中，泵油组件还包括转速传感器。
转速传感器用于检测电机或减速器的转速，并把检测到的转速传递给电控单元，电控单元根据电机或减速器的转速控制电子油泵工作，即当电机或减速器的转速高于预设值时，电控单元控制电子油泵工作，实现对电驱动总成的冷却和润滑。
本申请一个实施例中公开一种电驱动总成，电驱动总成使用上述任一个实施例中的冷却润滑装置进行电机和减速器的冷却及润滑，该电动总成具有冷却和润滑性能好的优点，可实现高扭矩和高转速输出。
以上所述，仅为本发明的具体实施方式，在本发明的上述教导下，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发明的目的，本发明的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种电驱动总成的冷却润滑装置，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减速器壳体，其特征在于，所述冷却润滑装置包括泵油组件、泵油通道和回油通道；
    所述泵油通道包括若干分油通道，各所述分油通道的出油位置分别对应所述电机壳体内的待冷却零件和待润滑零件，以及所述减速器壳体内的待冷却零件和待润滑零件；
    所述泵油组件包括进油口和出油口，所述进油口与第一壳体连通，所述出油口与所述泵油通道连接，所述泵油组件用于把所述第一壳体内的润滑油泵入所述泵油通道，通过各所述分油通道输送到所述待冷却零件和所述待润滑零件处；
    所述回油通道设置在所述第二壳体底部，用于使所述第二壳体内的润滑油回流到所述第一壳体内；
    其中，第一壳体为电机壳体，第二壳体为减速器壳体；或者，第一壳体为减速器壳体，第二壳体为电机壳体。
  2. 根据权利要求1所述的冷却润滑装置，其特征在于，所述冷却润滑装置还包括滤油组件；
    所述滤油组件设置在所述第一壳体的底部，用于润滑油的过滤。
  3. 根据权利要求2所述的冷却润滑装置，其特征在于，所述滤油组件为可拆式油滤器。
  4. 根据权利要求2所述的冷却润滑装置，其特征在于，所述冷却润滑装置还包括冷却器组件；
    所述冷却器组件设置在所述泵油组件和所述滤油组件之间或所述滤油组件与所述第一壳体之间的油道上，用于所述油道内润滑油的冷却。
  5. 根据权利要求1所述的冷却润滑装置，其特征在于，所述泵油组件包括机械油泵；
    所述机械油泵设置在所述减速器壳体内，与所述减速器组件传动连接。
  6. 根据权利要求5所述的冷却润滑装置，其特征在于，所述减速器组件还包括中间轴；
    所述机械油泵与所述中间轴传动连接。
  7. 根据权利要求1-6任一项所述的冷却润滑装置，其特征在于，所述泵油组件包括电子油泵和电控单元；
    所述电子油泵设置在所述电机壳体或所述变速器壳体的底部，所述电控单元用于控制所述电子油泵工作。
  8. 根据权利要求7所述的冷却润滑装置，其特征在于，所述泵油组件还包括若干个温度传感器；
    各所述温度传感器设置在所述电机壳体和/或所述减速器壳体内，所述电控单元根据所述温度传感器检测的温度控制所述电子油泵工作。
  9. 根据权利要求7所述的冷却润滑装置，其特征在于，所述泵油组件还包括转速传感器；
    所述转速传感器用于检测电机或减速器的转速，并把检测到的转速传递给所述电控单元，所述电控单元根据所述电机或所述减速器的转速控制所述电子油泵工作。
  10. 一种电驱动总成，其特征在于，所述电驱动总成使用如权利要求1-9任一项所述的冷却润滑装置进行电机和减速器的冷却及润滑。
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