本发明涉及汽车领域，尤其涉及一种常闭式电磁齿嵌离合器和单电 机 混合动力系统。 TECHNICAL FIELD: The present invention relates to the automotive field, and in particular, to a normally closed electromagnetic toothed clutch and a single-motor hybrid power system.
现有技术中，汽车混合动力系统中通常包含离合器、变速器与电机，目前市场上常见的双电机、单离合器混联混合动力系统，即由ISG 电 机(即发电启动一体机)和驱动电机联动而成。 BACKGROUND: In the prior art, automobile hybrid power systems usually include clutches, transmissions, and electric motors. Currently, dual-motor and single-clutch hybrid powertrain systems commonly used in the market, that is, ISG motors (i.e., generators and starters) and The drive motor is linked. A clutch is provided between the ISG motor and the driving motor, and the dual-motor hybrid system is switched between pure electric, series, or parallel driving modes through the clutch state of the clutch. 用 传统汽车中的 干 式离合器，而干式离合器受限于其结构，具有占用空间大、重量大、传递的转矩容量有限等缺点，上述缺点限制了双电机混联系统的发展，导致该方案不仅成本较高， 且 电机的有效利 用 率低。 The clutch of this solution often adopts the dry clutch in the traditional automobile . However, the dry clutch is limited by its structure, and has the disadvantages of occupying a large space, heavy weight, and limited torque capacity. The above disadvantages limit the dual-motor hybrid connection. The development of the system leads to not only higher cost of the solution, but also lower effective utilization of the motor .
鉴于 上 述问题，本发明提供了一种常闭式电磁齿嵌离合器和单电机混合动力系统，以解决上述问题或者至少部分地解决上述问题。 SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a normally closed electromagnetic toothed clutch and a single-motor hybrid power system to solve the above problems or at least partially solve the above problems.
According to one aspect of the present invention, a normally-closed electromagnetic toothed clutch is provided. The clutch includes a ring electromagnet, a ring armature, an elastic reset member, a moving end gear and a fixed end gear. The ring armature is fixed on the moving end gear, and the two are arranged coaxially. When the ring electromagnet is not energized, the ring armature and the ring electromagnet are spaced a certain distance, and the moving end gear and the fixed end gear mesh. When the power is on, the ring armature is magnetically attracted to the ring electromagnet to drive the moving end gear away from the fixed end gear. An elastic reset member is installed on the moving end gear to drive the end face gear to reset and fix after the ring electromagnet is powered off. The end gears mesh.
选地，动端面齿轮和定端面齿轮的齿尖和齿槽均设置为矩形。 Optionally , the tooth tips and the tooth grooves of the moving end gear and the fixed end gear are set to be rectangular. The elastic reset member includes: a positioning plate and a plurality of springs. The axial end surface of the moving end gear has a plurality of counterbore holes. The plurality of springs correspond to the plurality of counterbore holes. For each spring, one end is embedded in the counterbore hole. , The other end is fixed on the positioning plate, and the positioning plate is fixed in position. The axial end surface of the ring electromagnet has a ring-shaped recessed stop, and the axial end surface of the ring-shaped armature has a ring-shaped convex stop that is adapted to the ring-shaped drawing stop; when the ring-shaped armature is magnetically attracted to the ring-shaped electromagnet, the ring The convex stop is embedded in the annular concave stop. 上 具有环形凹槽，环形凹槽与环形凸止口同轴心设置；环形凹槽的两个 槽 边能够嵌装在环形凹止口内。 The end surface of the annular convex stop is provided with an annular groove, and the annular groove is arranged coaxially with the annular convex stop; two groove edges of the annular groove can be embedded in the annular concave stop. The ring-shaped electromagnet includes: an excitation coil and an iron core; the excitation coil wound along the circumference is fixed inside the iron core by resin sealing.
种 单电机混合动力系统，该系统包括发动机和电机，发动机和电机之间安装有第一电磁离合器；电机与汽车的驱动轴之间安装有第二电磁离合器；其中，第二电磁离合器为如上任一项的常闭式电磁齿嵌离合器。 According to another aspect of the present invention, a single-motor hybrid power system is provided. The system includes an engine and a motor, a first electromagnetic clutch is installed between the engine and the motor, and a second electromagnetic is installed between the motor and a drive shaft of the automobile. Clutch; wherein the second electromagnetic clutch is a normally closed electromagnetic toothed clutch according to any one of the above. 选地，环形电磁铁固定于电机的端盖上，且与电机的主轴同轴心，动端面齿轮套置在电机的主 轴 上，且能够随电机的主 轴 同步转动，以及能够沿电机的主轴轴向移动；定端面齿轮固定在汽车的驱动轴上，二者同轴心设置；弹性复位件固定在电机的主 轴 上，用于在环形电磁铁断电后，驱使动端面齿轮沿电机的主轴轴向移动，复位至与定端面齿轮相啮合。 Optionally , the ring-shaped electromagnet is fixed on the end cover of the motor and is coaxial with the main shaft of the motor. The moving end gear is sleeved on the main shaft of the motor , and can be synchronously rotated with the main shaft of the motor, and can be along the motor. The main shaft of the motor moves axially; the fixed-face gear is fixed on the drive shaft of the car, and the two are arranged coaxially; the elastic reset member is fixed on the main shaft of the motor , and is used to drive the end-face gear along The main shaft of the motor moves axially and returns to mesh with the fixed-face gear. 卡槽 ，环形卡槽与电机的主轴同轴心，环形电磁铁嵌装在环形卡槽内，且环形电磁铁的高度小于环形卡槽的 槽 深，用于形成环形 凹 止口。 The ring cover of the motor is provided with a ring-shaped slot , which is coaxial with the main axis of the motor. The ring-shaped electromagnet is embedded in the ring-shaped slot, and the height of the ring-shaped electromagnet is smaller than the slot depth of the ring-shaped slot. Circular notch .
The system further includes: a motor driver and an energy storage device, and the motor driver is installed between the motor and the energy storage device.
上 述可知，本发明提供的技术方案通过控制两个离合器的脱开或闭合，实现了单电机混合动力系统在不同工作模式之间的转换，其中，用于对电机和汽车的驱动轴进行机械连接的第二离合器是一种常闭式电磁齿嵌离合器，该电磁离合器采用电磁线圈控制，并采用端面齿轮传递转知，与传统的干式电磁离合器相比，该电磁离合器具有轴向尺寸短、重量轻、占用空间小、传递转矩大、动作迅速等特点；与传统的齿嵌离合器相比，该电磁离合器的动端面齿轮、定端面齿轮分别直接与电机主轴和汽车的驱动轴相合，离合器整体分别与两端的电机主轴和汽车的驱动轴精密配合，高度集成；并且 特 殊设计的环形衔铁和环形电磁铁的局部形状能够似的吸合过程中电磁力近似与电流成正比，使得吸合过程柔和 可 控，进一步导致单电机混合动力系统的模式转换过程 It can be known from the above that the technical solution provided by the present invention realizes the conversion of the single-motor hybrid power system between different working modes by controlling the disengagement or closing of the two clutches. The mechanically-connected second clutch is a normally-closed electromagnetic toothed clutch. The electromagnetic clutch is controlled by an electromagnetic coil and transmitted by a face gear. Compared with a traditional dry electromagnetic clutch, the electromagnetic clutch has an axial dimension. Short, light weight, small footprint, large transmission torque, fast action, etc. Compared with traditional toothed clutches, the moving end gear and fixed end gear of the electromagnetic clutch are directly connected to the motor shaft and the drive shaft of the car, respectively. The clutch as a whole is precisely matched with the motor shaft of the two ends and the drive shaft of the car, and is highly integrated; and the special shape of the ring armature and ring electromagnet can be similar to the electromagnetic force in the suction process, which is approximately proportional to the current, so that soft controllable pull process, resulting in a further mode hybrid system of a motor conversion process And controllable.
For more details, please refer to a normally closed electromagnetic toothed clutch and single-motor hybrid system.