Motor Vehicle Electric Connection Node Floor Mounting
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Solution Overview
Problem
Existing electric connection nodes for motor-vehicles are complex and difficult to assemble, lacking simplicity and functionality, especially in the context of hybrid and electric vehicles where streamlined electrical connections are essential.
Innovation Solution
A motor-vehicle electric connection node with a support casing connected to the floor structure, featuring multiple inlet fittings for power cables, including a protruding annular portion and sealing gaskets for watertightness, simplifies assembly and ensures secure electrical connections between components like alternators, lead-acid batteries, and lithium batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional electric connection nodes are used, then electrical connections between components can be established, but the assembly complexity is high and the structure is difficult to assemble
Solution Approach 1:
The patent combines multiple inlet fittings (first, second, and third inlet fittings for different power cables) into a single integrated support casing structure. This merging of multiple connection points into one unified component reduces the number of separate parts that need to be assembled, thereby simplifying the assembly process while maintaining the ability to establish multiple electrical connections simultaneously.
Solution Approach 2:
The support casing serves multiple functions: it provides structural support, houses multiple inlet fittings for different cable types, and integrates sealing elements. This multi-functionality reduces the need for separate components, simplifying assembly while maintaining comprehensive electrical connection capabilities for hybrid and electric vehicle systems.
2Ease of operation
If the electric connection node is mounted protruding below the floor structure, then cable routing is simplified, but water infiltration risk increases
Solution Approach 1:
The patent applies different sealing qualities to different parts of the support casing: sealing gaskets are specifically placed at the lower face where it contacts the floor structure and at the inlet fittings where cables enter. This localized sealing approach provides targeted protection against water infiltration at critical points while allowing the overall structure to protrude below the floor for simplified cable routing.
Solution Approach 2:
Sealing gaskets act as intermediary elements between the support casing and the floor structure, and between the inlet fittings and the external environment. These gaskets mediate the connection while preventing water infiltration, allowing the node to protrude below the floor without compromising water resistance.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An electric connection node (3) for a motor-vehicle, comprising a support casing (4) designed to be connected to a motor-vehicle floor structure (1), so that the electric connection node (3) protrudes below the floor structure (1). The node (3) has a first and a second inlet fitting (5,6) arranged at a side face (41) of the support casing (4) and each is provided with a respective fitting (50, 60), arranged, respectively, for connection to a first and a second power cable (C1, C2). The node (3) also includes a third inlet fitting (7) arranged at the upper face (40) of the support casing (4), and is provided with a further connector (70) for electrical connection with a third power cable (C3) .