Compact Dual-Motor Drive Block Layout With Inverter and Parking Lock
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Solution Overview
Problem
Existing electric vehicle drive trains with two electric machines face challenges in compact installation space, especially in more compact vehicles or sports cars, while maintaining reliability and safety features.
Innovation Solution
The drive block configuration includes two electric machines arranged one behind the other, with transmissions attached to the end faces of the electric machines, forming a compact block that can be installed in a transverse orientation, similar to an internal combustion engine, and equipped with separate parking locks and inverters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If two electric machines are arranged one behind the other with transmissions attached to end faces, then installation space is reduced, but device complexity increases
Solution Approach 1:
The patent combines two electric machine drives into a single integrated drive block structure, where transmissions are attached to the end faces of electric machines arranged one behind the other. This merging approach consolidates multiple components into one compact unit, reducing overall installation space while managing complexity through systematic integration.
Solution Approach 2:
The drive block employs a nested arrangement where transmissions are positioned at the end faces of electric machines in a compact configuration. The inverter block is integrated within or adjacent to the drive block, creating a nested structure that optimizes space utilization by placing components within available spaces of the overall assembly.
2Reliability
If separate parking locks are provided for each transmission, then safety is improved, but device complexity increases
Solution Approach 1:
The patent provides separate parking locks for each transmission in the drive block, segmenting the safety function into independent units. This segmentation ensures that each wheel can be independently secured, improving safety and reliability while managing complexity through modular design where each parking lock operates as a discrete, manageable component.
3Volume of moving object
If inverter block is integrated into drive block, then installation space is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The inverter block is integrated into the drive block structure, merging power conversion components with the mechanical drive components. This integration reduces overall installation space by eliminating separate mounting locations, while the patent manages manufacturing precision requirements through coordinated design of the integrated assembly.
Data Source
AI summary
A drive block, i.e. a block-like electric drive, includes two drives for driving respective wheels. Each of the two drives can be driven by a separate electric machine, i.e. by a first electric machine and a second electric machine, respectively. The drive block further includes an inverter block and a parking lock. The inverter block and the parking lock can be situated on different sides of a structural plane defined through centers of rotation of the first and second electric machines.