Dual-drive electric machine with controllable epicycle gear set
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Solution Overview
Problem
Conventional friction type electromagnetic clutch devices in dual-drive electric machines often result in residual rotary torque during disengagement, leading to kinetic energy loss and ineffective operation.
Innovation Solution
A dual-drive electric machine with a controllable epicycle gear set, where the inner and outer rotation parts are connected through an epicycle gear set and a controllable brake device, allowing for precise control of brake locking and releasing to manage torque transmission between the rotation shafts and sleeve type rotation shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a friction type electromagnetic clutch device is used to engage or release the load with the rotary electric machine, then the load can be connected or disconnected from the electric machine, but residual rotary torque remains during releasing causing kinetic energy loss and ineffective operation
Solution Approach 1:
The patent introduces an epicycle gear set as an intermediary mechanism between the electromagnetic clutch and the load. This gear set with multiple planetary gears provides a mechanical advantage system that enables more complete torque interruption during disengagement, eliminating residual rotary torque and preventing kinetic energy loss while maintaining ease of operation through electromagnetic control
Solution Approach 2:
The patent employs a dynamic brake control mechanism that actively manages the braking force applied to the epicycle gear set during disengagement. By dynamically adjusting the brake force to match the residual torque, the system ensures complete torque interruption without energy loss, transforming the static friction clutch operation into a dynamically optimized process
2Ease of manufacture
If a friction type electromagnetic clutch device is used, then the structure is simple and easy to manufacture, but residual rotary torque causes ineffective operation
Solution Approach 1:
The epicycle gear set serves as a mechanical intermediary that amplifies the effectiveness of the electromagnetic clutch. By incorporating planetary gears with controlled brake application, the system achieves complete torque interruption and eliminates residual rotation, significantly improving operational reliability while maintaining manufacturing feasibility through standardized gear components
Solution Approach 2:
The patent partially replaces the pure friction-based mechanical clutch system with a hybrid system combining electromagnetic actuation and epicycle gear mechanical advantage. This substitution eliminates the residual torque problem inherent in friction clutches while maintaining the simplicity and manufacturability of mechanical components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables efficient control of torque transmission, minimizing kinetic energy loss and ensuring effective operation by allowing for precise management of power flow between the electric machine and load.
Implementation Method 1
through controlling the controllable brake device to perform brake locking or releasing, the operations of transmission function of combining transmission or releasing between a rotation shaft (S101) at an output/input end, a rotation shaft (S102) at an output/input end and a sleeve type rotation shaft (AS101)
Data Source
AI summary
The present invention is structured by a dual-drive electric machine being combined with an epicycle gear set (EG101) and a controllable brake device, through controlling the controllable brake device to perform brake locking or releasing, the operations of transmission function of combining transmission or releasing between a rotation shaft (S101) at an output/input end, a rotation shaft (S102) at an output/input end and a sleeve type rotation shaft (AS101) at an output/input end of the epicycle gear set (EG101) are enabled to be controlled, and the interacting operation between the dual-drive electric machine (EM100) and the output/input ends are also enabled to be controlled.