WO2025236283A1 - 用于混合动力传动系统的转轴导流装置 - Google Patents

用于混合动力传动系统的转轴导流装置

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Publication number
WO2025236283A1
WO2025236283A1 PCT/CN2024/093954 CN2024093954W WO2025236283A1 WO 2025236283 A1 WO2025236283 A1 WO 2025236283A1 CN 2024093954 W CN2024093954 W CN 2024093954W WO 2025236283 A1 WO2025236283 A1 WO 2025236283A1
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WO
WIPO (PCT)
Prior art keywords
guide device
conductive component
terminal
rotating shaft
receiving hole
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2024/093954
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English (en)
French (fr)
Inventor
孙娟娟
高斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to PCT/CN2024/093954 priority Critical patent/WO2025236283A1/zh
Publication of WO2025236283A1 publication Critical patent/WO2025236283A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/40—Structural association with grounding devices

Definitions

  • This invention relates to the field of vehicles. More specifically, this invention relates to a shaft guide device for a hybrid powertrain.
  • a dedicated hybrid transmission is a crucial component of hybrid vehicles, enabling switching between different driving modes to adapt to varying driving conditions and requirements.
  • the DHT includes an electric motor.
  • shaft voltage is generated at both ends of the motor shaft or between the shaft and bearings.
  • a lubricating oil film exists between the motor shaft and bearings, providing insulation.
  • Shaft current can cause problems such as bearing damage, damage to insulating components, motor instability, and electromagnetic interference.
  • a conductive component can be used to ground the motor shaft, thereby drawing the shaft current away from the shaft.
  • This requires a spring to maintain conductive contact between the conductive component and the motor shaft through its elastic force.
  • the spring may deform or fatigue, causing the conductive component to lose stable contact with the motor shaft, thus affecting the elimination of shaft current.
  • One object of the present invention is to provide a shaft current guide device for a hybrid powertrain that can replace a spring. Another object of the present invention is to provide a shaft current guide device for a hybrid powertrain that can avoid or reduce the influence of shaft current. Yet another object of the present invention is to provide a shaft current guide device for a hybrid powertrain that can achieve stable conductive contact with the shaft.
  • the device includes: an end cap having a receiving hole and a liquid inlet in fluid communication with the receiving hole; a conductive member having a form-fitted arrangement in the receiving hole and at least partially protruding axially out of the receiving hole; and a terminal having an interference fit to the receiving hole of the end cap and spaced axially from the conductive member such that the liquid inlet is located axially between the terminal and the conductive member, wherein the terminal is configured to be electrically connected to the conductive member, wherein the receiving hole of the end cap, the conductive member, and the terminal are configured to together form a pressure chamber, and when coolant enters the pressure chamber through the liquid inlet, the coolant will apply an axial force to the conductive member in a direction away from the end cap.
  • the receiving hole of the end cap, the conductive component, and the terminal are configured to collectively form a pressure chamber, into which coolant can enter to apply an axial force to the end cap.
  • the coolant in the pressure chamber allows the conductive component of the shaft guide device to maintain conductive contact with the contact component of the shaft connected to the hybrid powertrain.
  • the conductive component is conductively connected to the terminal, allowing charges generated on the shaft to be conducted via the contact component to the conductive component of the shaft guide device, and then from the conductive component to the terminal. Therefore, a low-impedance conduction path can be provided for the shaft, allowing charges on the shaft to flow to ground, avoiding or reducing problems such as component damage and operational interference caused by shaft current to the hybrid powertrain.
  • the inlet hole is located above the central axis of the receiving hole.
  • coolant can enter and remain in the pressure chamber through the inlet hole, thereby providing a continuous axial force to the conductive component to ensure stable conductive contact between the conductive component and the contact component connected to the rotating shaft.
  • a clearance fit is formed between the outer peripheral surface of the conductive component and the inner peripheral surface of the receiving hole.
  • the shaft guide device further includes a bolt disposed on the side of the terminal away from the pressure chamber, and configured to apply an axial force to the terminal in the direction toward the conductive component via a threaded connection between the bolt and the end cap.
  • the terminal can be maintained in an interference fit with the end cap without shifting from its mounting position due to the pressure of the coolant in the pressure chamber.
  • the rotating shaft guiding device further includes: a wire disposed in the pressure chamber, wherein one end of the wire is connected to a conductive component and the other end is connected to a terminal, for connection with the conductive component respectively. Electrical components and terminals are electrically connected.
  • the conductive component is made of graphite.
  • a hybrid powertrain system comprising: a shaft; a contact member torsionally connected to the shaft; and a shaft guide device according to an embodiment of the present invention, wherein when coolant enters the pressure chamber of the shaft guide device through an inlet hole, the coolant applies an axial force to a conductive member of the shaft guide device in a direction toward the contact member, such that the conductive member and the contact member maintain conductive contact.
  • the contact component is connected to the rotating shaft by an interference fit.
  • the end caps of the rotating shaft and the rotating shaft guide device are interconnected to form a coolant chamber, the coolant chamber being located radially on the outer periphery of the pressure chamber, and wherein the contact component includes a through hole to allow fluid communication between the coolant chamber and the inner cavity of the rotating shaft.
  • Another aspect of the present invention provides a vehicle that includes a hybrid powertrain system according to an embodiment of the invention.
  • Figure 1 is a partial cross-sectional schematic diagram of a hybrid power transmission system including a rotating shaft guide device according to an embodiment of the present invention.
  • Figure 2 is an exploded view of a hybrid powertrain system including a rotating shaft guide device according to an embodiment of the present invention.
  • Figure 3 is a schematic diagram of an end cap according to an embodiment of the present invention.
  • FIG1 is a partial cross-sectional schematic diagram of a hybrid powertrain system including a shaft guide device according to an embodiment of the invention.
  • FIG2 is an exploded schematic diagram of a hybrid powertrain system including a shaft guide device according to an embodiment of the invention.
  • FIG3 is a schematic diagram of an end cap according to an embodiment of the invention.
  • a hybrid powertrain includes a shaft 1, a contact member 2 torsionally connected to the shaft 1, and a shaft guide device 3.
  • the shaft 1 may be the shaft of an electric motor in the hybrid powertrain.
  • the contact member 2 is disposed at the axial end of the shaft 1.
  • the contact member 2 is connected to the axial end of the shaft 1 by an interference fit.
  • the contact member 2 rotates with the shaft 1.
  • the contact member 2 is made of a conductive material and is electrically connected to the shaft 1.
  • the shaft guide device 3 is electrically connected to the contact member 2 to release any charge or voltage generated on the shaft 1 outside the hybrid powertrain.
  • the rotating shaft guide device 3 includes an end cap 10, a conductive component 20, and a terminal 30.
  • the rotating shaft guide device 3 further includes a bolt 40 and a wire 50.
  • the end cap 10 includes a receiving hole 11 and a liquid inlet hole 12 in fluid communication with the receiving hole 11, as shown in Figures 1 and 3. Viewed axially, the liquid inlet hole 12 is located above the central axis of the receiving hole 11.
  • the conductive member 20 is form-fitted into the receiving hole 11.
  • the conductive member 20 protrudes at least partially axially from the receiving hole 11 for contact with the contact member 2.
  • a clearance fit is formed between the outer peripheral surface of the conductive member 20 and the inner peripheral surface of the receiving hole 11. This clearance fit allows the conductive member 20 to be easily installed in the receiving hole 11 and to move within a certain range relative to the receiving hole 11, while the gap between the conductive member 20 and the receiving hole 11 does not cause excessive leakage of coolant from the pressure chamber (described in detail below) along this gap.
  • the conductive member 20 is made of a conductive material.
  • the conductive member 20 is made of graphite, i.e., the conductive member 20 is a carbon brush.
  • terminal 30 is connected to receiving hole 11 of end cap 1 via interference fit.
  • Terminal 30 is electrically connected to conductive component 20.
  • terminal 30 is provided with The terminal is grounded.
  • terminal 30 is electrically connected to conductive member 20 via wire 50.
  • Wire 50 is disposed in receiving hole 11. One end of wire 50 is connected to conductive member 20 and the other end is connected to terminal 30, so as to be electrically connected to conductive member 20 and terminal 30 respectively.
  • the terminal 30 and the conductive member 20 are axially spaced apart, such that the liquid inlet 12 is axially located between the terminal 30 and the conductive member 20.
  • the receiving hole 11 of the end cap 10, the conductive member 20, and the terminal 30 together form a pressure chamber S1, as shown in FIG1.
  • a wire 50 is disposed in the pressure chamber S1.
  • bolt 40 is connected to end cap 10 and is located on the side of terminal 30 away from pressure chamber S1.
  • Bolt 40 may be threaded to end cap 10 to apply an axial force to terminal 30 in the direction toward conductive member 20.
  • terminal 30 can be maintained in an interference fit with end cap 10 without being displaced from its mounting position due to the pressure of coolant in pressure chamber S1.
  • the coolant When coolant enters the pressure chamber S1 through the inlet hole 12, the coolant exerts an axial force on the conductive component 20 in a direction away from the end cap 10 (i.e., towards the contact member 2). Under the action of the axial force exerted by the coolant in the pressure chamber S1, the conductive component 20 and the contact member 2 can maintain conductive contact.
  • the charge generated on the shaft 1 can be conducted to the conductive component 20 of the shaft guide device 3 via the contact member 2, and then from the conductive component 20 (optionally via the wire 50) to the terminal 30. Therefore, a low-impedance flow path can be provided for the shaft 1, so that the charge on the shaft 1 can flow to ground, avoiding or reducing problems such as component damage and operational interference caused by shaft current to the hybrid powertrain.
  • the end cap 10 further includes an outer cavity 13 configured to surround the receiving hole 11.
  • the outer cavity 13 has an open end and a closed end opposite each other along the axial direction, wherein the open end faces the rotating shaft 1.
  • the outer cavity 13 is in fluid communication with the receiving hole 11 through a liquid inlet hole 12.
  • the end cap 10 also includes a liquid injection hole 14.
  • the liquid injection hole 14 is in fluid communication with the outer cavity 13. In an exemplary embodiment, viewed axially, the liquid injection hole 14 is disposed above the central axis of the receiving hole 11 and above the liquid inlet hole 12.
  • the end cap 10 of the rotating shaft 1 and the rotating shaft guide device 3 are interconnected to form a coolant chamber S2, wherein the outer cavity 13 constitutes a part of the coolant chamber S2.
  • the coolant chamber S2 is radially disposed on the outer periphery of the pressure chamber S1 and is in fluid communication with the pressure chamber S1 through the inlet hole 12.
  • the contact member 2 includes a through hole 21, and the rotating shaft 1 includes an inner cavity S3.
  • the through hole 21 is in fluid communication with the inner cavity S3 of the rotating shaft 1.
  • the coolant cavity S2 is in fluid communication with the inner cavity S3 of the rotating shaft 1.
  • the injection hole 14 allows external coolant to flow into the outer cavity 13 of the end cap 10 and simultaneously into the coolant chamber S2. A portion of the coolant enters the pressure chamber S1 through the inlet hole 12 to apply axial force to the conductive component 20 in the direction toward the contact component 2; another portion of the coolant flows into the inner cavity S3 of the shaft 1 through the through hole 21 of the contact component 2 to cool the shaft 1 and other components.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

本发明涉及用于混合动力传动系统的转轴导流装置。本发明提供一种用于混合动力传动系统的转轴导流装置，包括：端盖，其包括容纳孔和与容纳孔流体连通的进液孔；导电部件，其形状配合地设置在容纳孔中并且沿轴向至少部分地突出到容纳孔外；和端子，其通过过盈配合连接到端盖的容纳孔并且沿轴向与导电部件间隔开设置，以使得进液孔沿轴向位于端子和导电部件之间，其中，端子设置成与导电部件导电连接，其中，端盖的容纳孔、导电部件和端子构造成共同形成压力腔，并且当冷却液通过进液孔进入到压力腔中时，冷却液将沿着远离端盖的方向向导电部件施加轴向力。

Description

用于混合动力传动系统的转轴导流装置 技术领域
本发明涉及车辆领域。更具体地，本发明涉及用于混合动力传动系统的转轴导流装置。
背景技术
混合动力专用变速器(DHT)是混合动力车辆中的重要组成部分，能够在不同驱动模式之间切换以适应不同驾驶条件和要求。混合动力变速器中包括电机。在电机运行过程中，由于电机内部的磁路不平衡和逆变器供电电压含有高次谐波分量等原因，会在电机转轴的两端或转轴与轴承之间产生轴电压。正常情况下，电机转轴与轴承间有润滑油膜的存在，起到绝缘的作用。当轴电压增大到一定程度时，轴电压将击穿油膜而放电，构成回路，即产生轴电流。轴电流可能会造成轴承损坏、绝缘部件损坏、电机运行不稳定和电磁干扰等问题。
为改善轴电流带来的不利影响，可以采用导电部件将电机转轴接地，以从电机转轴上将轴电流引出。为此，需要设置弹簧，以通过弹簧的弹性力来保持导电部件与电机转轴的导电接触。但是，弹簧在长时间使用后可能出现变形或疲劳等问题，导致导电部件不能与电机转轴稳定接触，从而影响轴电流的消除。
为此，需要一种能够替代弹簧的用于混合动力传动系统的转轴导流装置。
发明内容
本发明的一个目的是提供能够替代弹簧的用于混合动力传动系统的转轴导流装置。本发明的另一目的是提供能够避免或减少轴电流影响的用于混合动力传动系统的转轴导流装置。本发明的另一目的是提供能够与转轴实现稳定导电接触的用于混合动力传动系统的转轴导流装置。
本发明的一个方面提供一种用于混合动力传动系统的转轴导流装置， 包括：端盖，其包括容纳孔和与容纳孔流体连通的进液孔；导电部件，其形状配合地设置在容纳孔中并且沿轴向至少部分地突出到容纳孔外；和端子，其通过过盈配合连接到端盖的容纳孔并且沿轴向与导电部件间隔开设置，以使得进液孔沿轴向位于端子和导电部件之间，其中，端子设置成与导电部件导电连接，其中，端盖的容纳孔、导电部件和端子构造成共同形成压力腔，并且当冷却液通过进液孔进入到压力腔中时，冷却液将沿着远离端盖的方向向导电部件施加轴向力。
在本发明的实施例中，端盖的容纳孔、导电部件和端子构造成共同形成压力腔，并且冷却液可以进入到压力腔中以向端盖施加轴向力。由此，压力腔中的冷却液可以使得转轴导流装置的导电部件与连接到混合动力传动系统的转轴的接触部件保持导电接触。此外，导电部件与端子导电连接，由此转轴上产生的电荷可以经由接触部件传导到转轴导流装置的导电部件，然后可以从导电部件传导到端子。因此，可以为转轴提供低阻抗的导流路径，从而转轴上的电荷可以流到接地，避免或减少轴电流对混合动力传动系统造成部件损坏和运行干扰等问题。
根据本发明的实施例，沿轴向观察，进液孔设置在容纳孔的中心轴线的上方。由此，冷却液可以经由进液孔进入到压力腔中并且保持在压力腔中，从而能够为导电部件提供持续的轴向力，以保证导电部件与连接到转轴的接触部件实现稳定的导电接触。
根据本发明的实施例，导电部件的外周面与容纳孔的内周面之间形成间隙配合。通过间隙配合，导电部件可以方便地安装在容纳孔中并且能够相对于容纳孔在一定程度内运动，同时导电部件与容纳孔之间的间隙不会导致压力腔中的冷却液沿着该间隙大量流出。
根据本发明的实施例，转轴导流装置还包括：螺栓，其设置在端子的远离压力腔一侧，并且构造成通过螺栓与端盖之间的螺纹连接以沿着朝向导电部件的方向向端子施加轴向力。由此，端子可以被保持与端盖的过盈配合，而不会由于压力腔中的冷却液压力作用而从安装位置移位。
根据本发明的实施例，转轴导流装置还包括：导线，其设置在压力腔中，其中导线的一端连接到导电部件并且另一端连接到端子，以分别与导 电部件和端子导电连接。
根据本发明的实施例，导电部件由石墨制成。
本发明的另一方面提供一种混合动力传动系统，包括：转轴；接触部件，其抗扭转地连接到转轴；和根据本发明的实施例的转轴导流装置，其中，当冷却液通过进液孔进入到转轴导流装置的压力腔中时，冷却液将沿着朝向接触部件的方向向转轴导流装置的导电部件施加轴向力，以使得导电部件与接触部件保持导电接触。
根据本发明的实施例，接触部件通过过盈配合连接到转轴。
根据本发明的实施例，转轴和转轴导流装置的端盖相互连接以形成冷却液腔，冷却液腔沿径向位于压力腔的外周，并且其中，接触部件包括通孔，以使得冷却液腔与转轴的内腔流体连通。
本发明的另一方面提供一种车辆，其包括根据本发明的实施例的混合动力传动系统。
附图说明
图1根据本发明的实施例的包括转轴导流装置的混合动力传动系统的局部截面示意图。
图2是根据本发明的实施例的包括转轴导流装置的混合动力传动系统的分解示意图。
图3是根据本发明的实施例的端盖的示意图。
具体实施方式
下文中，参照附图描述本发明的实施例。下面的详细描述和附图用于示例性地说明本发明的原理，本发明不限于所描述的优选实施例，本发明的范围由权利要求书限定。现参考示例性的实施方式详细描述本发明，一些实施例图示在附图中。以下描述参考附图进行，除非另有表示，否则在不同附图中的相同附图标记代表相同或类似的元件。以下示例性实施方式中描述的方案不代表本发明的所有方案。相反，这些方案仅是所附权利要求中涉及的本发明的各个方面的系统和方法的示例。
本发明提供一种混合动力传动系统。根据本发明的实施例的混合动力传动系统可以安装在车辆中。下面，参考附图来描述本发明的示例性实施例。图1根据本发明的实施例的包括转轴导流装置的混合动力传动系统的局部截面示意图。图2是根据本发明的实施例的包括转轴导流装置的混合动力传动系统的分解示意图。图3是根据本发明的实施例的端盖的示意图。
根据本发明的实施例，混合动力传动系统包括转轴1、抗扭转地连接到转轴1的接触部件2和转轴导流装置3。转轴1可以是混合动力传动系统中电机的转轴。接触部件2设置在转轴1的轴向端部处。在示例性实施例中，接触部件2通过过盈配合连接到转轴1的轴向端部。在混合动力传动系统运行的过程中，接触部件2将随着转轴1一起转动。接触部件2由导电材料制成，并且与转轴1导电连接。转轴导流装置3用于与接触部件2导电连接，以将转轴1上产生的电荷或电压释放到混合动力传动系统之外。
根据本发明的实施例，转轴导流装置3包括端盖10、导电部件20和端子30。在示例性实施例中，转轴导流装置3还包括螺栓40和导线50。
根据本发明的实施例，端盖10包括容纳孔11和与容纳孔11流体连通的进液孔12，如图1和图3所示。沿轴向观察，进液孔12设置在容纳孔11的中心轴线的上方。
根据本发明的实施例，导电部件20形状配合地设置在容纳孔11中。导电部件20沿轴向至少部分地突出到容纳孔11外，以用于与接触部件2接触。在示例性实施例中，导电部件20的外周面与容纳孔11的内周面之间形成间隙配合。通过间隙配合，导电部件20可以方便地安装在容纳孔11中并且能够相对于容纳孔11在一定程度内运动，同时导电部件20与容纳孔11之间的间隙不会导致压力腔(下文详述)中的冷却液沿着该间隙大量流出。导电部件20由导电材料制成。在示例性实施例中，导电部件20由石墨制成，即导电部件20是碳刷。
根据本发明的实施例，端子30通过过盈配合连接到端盖1的容纳孔11中。端子30与导电部件20导电连接。在示例性实施例中，端子30设 置成接地。在示例性实施例中，端子30通过导线50导电连接到导电部件20。导线50设置在容纳孔11中。导线50的一端连接到导电部件20并且另一端连接到端子30，以分别与导电部件20和端子30导电连接。
根据本发明的实施例，端子30与导电部件20沿轴向间隔开设置，从而使得进液孔12沿轴向位于端子30和导电部件20之间。由此，端盖10的容纳孔11、导电部件20和端子30共同形成压力腔S1，如图1所示。在示例性实施例中，导线50设置在压力腔S1中。
在示例性实施例中，螺栓40连接到端盖10并且设置在端子30的远离压力腔S1一侧。螺栓40可以螺纹连接到端盖1，以沿着朝向导电部件20的方向向端子30施加轴向力。由此，端子30可以被保持与端盖10的过盈配合，而不会由于压力腔S1中的冷却液压力作用而从安装位置移位。
当冷却液通过进液孔12进入到压力腔S1中时，冷却液将沿着远离端盖10的方向(即朝向接触部件2的方向)向导电部件20施加轴向力。在压力腔S1中的冷却液所施加的轴向力作用下，导电部件20与接触部件2可以保持导电接触。由此，转轴1上产生的电荷可以经由接触部件2传导到转轴导流装置3的导电部件20，然后可以从导电部件20(可选地经过导线50)传导到端子30。因此，可以为转轴1提供低阻抗的导流路径，从而转轴1上的电荷可以流到接地，避免或减少轴电流对混合动力传动系统造成部件损坏和运行干扰等问题。
在示例性实施例中，如图1所示，端盖10还包括设置成围绕容纳孔11的外腔13。外腔13具有沿轴向相对的开放端和封闭端，其中开放端朝向转轴1。外腔13通过进液孔12与容纳孔11流体连通。端盖10还包括注液孔14。注液孔14与外腔13流体连通。在示例性实施例中，沿轴向观察，注液孔14设置在容纳孔11的中心轴线上方并且设置在进液孔12上方。
根据本发明的实施例，转轴1和转轴导流装置3的端盖10相互连接以形成冷却液腔S2，其中外腔13构成冷却液腔S2的一部分。冷却液腔S2沿径向设置在压力腔S1的外周，并且通过进液孔12与压力腔S1流体连通。在示例性实施例中，接触部件2包括通孔21，转轴1包括内腔S3， 通孔21与转轴1的内腔S3流体连通。由此，冷却液腔S2与转轴1的内腔S3流体连通。
注液孔14用于使外部的冷却液经由注液孔14流入到端盖10的外腔13中并同时流入到冷却液腔S2中。一部分冷却液经由进液孔12进入到压力腔S1中，以沿着朝向接触部件2的方向向导电部件20施加轴向力；另一部分冷却液经由接触部件2的通孔21流入到转轴1的内腔S3中，以对转轴1及其他部件进行冷却。
尽管已经参考示例性实施例描述了本发明，但是应理解，本发明并不限于上述实施例的构造和方法。相反，本发明意在覆盖各种修改例和等同配置。另外，尽管在各种示例性结合体和构造中示出了所公开发明的各种元件和方法步骤，但是包括更多、更少的元件或方法的其它组合也落在本发明的范围之内。
附图标记列表
1 转轴；
2 接触部件；
3 转轴导流装置；
10 端盖；
11 容纳孔；
12 进液孔；
13 外腔；
14 注液孔；
20 导电部件；
21 通孔
30 端子；
40 螺栓；
50 导线；
S1 压力腔；
S2 冷却液腔；
S3 内腔。

Claims (10)

  1. 一种用于混合动力传动系统的转轴导流装置(3)，包括：
    端盖(10)，其包括容纳孔(11)和与所述容纳孔(11)流体连通的进液孔(12)；
    导电部件(20)，其形状配合地设置在所述容纳孔(11)中并且沿轴向至少部分地突出到所述容纳孔(11)外；和
    端子(30)，其通过过盈配合连接到所述端盖(10)的所述容纳孔(11)并且沿轴向与所述导电部件(20)间隔开设置，以使得所述进液孔(12)沿轴向位于所述端子(30)和所述导电部件(20)之间，其中，所述端子(30)设置成与所述导电部件(20)导电连接，
    其中，所述端盖(10)的所述容纳孔(11)、所述导电部件(20)和所述端子(30)构造成共同形成压力腔(S1)，并且当冷却液通过所述进液孔(12)进入到所述压力腔(S1)中时，冷却液将沿着远离所述端盖(10)的方向向所述导电部件(20)施加轴向力。
  2. 根据权利要求1所述的转轴导流装置(3)，其中，沿轴向观察，所述进液孔(12)设置在所述容纳孔(11)的中心轴线的上方。
  3. 根据权利要求2所述的转轴导流装置(3)，其中，所述导电部件(20)的外周面与所述容纳孔(11)的内周面之间形成间隙配合。
  4. 根据权利要求3所述的转轴导流装置(3)，还包括：螺栓(40)，其设置在所述端子(30)的远离所述压力腔(S1)一侧，并且构造成通过所述螺栓(40)与所述端盖(10)之间的螺纹连接以沿着朝向所述导电部件(20)的方向向所述端子(30)施加轴向力。
  5. 根据权利要求1至4中任一项所述的转轴导流装置(3)，还包括：导线(50)，其设置在所述压力腔(S1)中，其中所述导线(50)的一端连接到所述导电部件(20)并且另一端连接到所述端子(30)，以分别与所述导电部件(20)和所述端子(30)导电连接。
  6. 根据权利要求5所述的转轴导流装置(3)，其中，所述导电部件(20)由石墨制成。
  7. 一种混合动力传动系统，包括：
    转轴(1)；
    接触部件(2)，其抗扭转地连接到所述转轴(1)；和
    根据权利要求1至6中任一项所述的转轴导流装置(3)，
    其中，当冷却液通过所述进液孔(11)进入到转轴导流装置(3)的压力腔(S1)中时，冷却液将沿着朝向所述接触部件(2)的方向向所述转轴导流装置(3)的导电部件(20)施加轴向力，以使得所述导电部件(20)与所述接触部件(2)保持导电接触。
  8. 根据权利要求7所述的混合动力传动系统，其中，所述接触部件(2)通过过盈配合连接到所述转轴(1)。
  9. 根据权利要求8所述的混合动力传动系统，其中，所述转轴(1)和所述转轴导流装置(3)的端盖(10)相互连接以形成冷却液腔(S2)，所述冷却液腔(S2)沿径向位于所述压力腔(S1)的外周，并且其中，所述接触部件(2)包括通孔(21)，以使得所述冷却液腔(S2)与所述转轴(1)的内腔(S3)流体连通。
  10. 一种车辆，其包括根据权利要求7至9中任一项所述的混合动力传动系统。
PCT/CN2024/093954 2024-05-17 2024-05-17 用于混合动力传动系统的转轴导流装置 Pending WO2025236283A1 (zh)

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