Cable Routing Structure for Electric Motor Compartment
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Solution Overview
Problem
In electric vehicle motor compartments, the high current power supply from the power control unit (PCU) to the electric motor requires short cable connections, but the layout of devices around the PCU limits the routing space for cables, making it difficult to ensure efficient cable routing.
Innovation Solution
The cable routing structure involves fixing the power control unit to the upper portion of the drive train, with cables routed through the space defined by the power control unit and the drive train, allowing for shorter cable lengths by utilizing the space below the power control unit and connecting cables between the PCU and electrical components close together, thereby reducing the size of the connecting structures and ensuring efficient routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the power control unit is arranged near the electric motor to reduce cable length, then power loss is reduced, but the cable routing space is limited by surrounding devices
Solution Approach 1:
The patent utilizes the vertical space dimension by routing cables through the gap between the upper surface of the drive train and the lower surface of the power control unit. This vertical routing path (in the Z-direction) provides adequate cable routing space without requiring additional lateral space, thereby maintaining the compact arrangement of the power control unit near the electric motor while still accommodating cable routing requirements.
2Device complexity
If on-board components are arranged on both sides of the power control unit, then device integration is improved, but cable routing between power control unit and electrical components becomes difficult
Solution Approach 1:
The patent resolves the cable routing difficulty by utilizing the vertical gap space between the drive train and power control unit. This vertical routing path allows cables to reach electrical components on both sides of the power control unit without requiring additional lateral space, thereby maintaining high device integration while ensuring ease of cable routing.
Solution Approach 2:
The patent creates a localized cable routing channel through the vertical gap between the drive train and power control unit. This localized space provides a dedicated pathway for cables to reach electrical components on both sides, ensuring that cable routing is facilitated in specific local areas without affecting the overall compact device integration.
Data Source
AI summary
A cable routing structure includes a drive train within which an electric motor is housed; a power control unit configured to supply alternating current to the electric motor, the power control unit being fixed to an upper portion of the drive train, and on-board components being arranged on both sides of the power control unit in a lateral direction of a vehicle; an electrical component being arranged on a side of a plane that the power control unit is on; and a first end of a first cable being connected to a side surface of the power control unit that faces toward a front or a rear of the vehicle, a second end of the first cable being connected to the electrical component, and the first cable being routed through a space defined by the power control unit and the drive train.