Charging Gun Cable Layout With PE-Shielded CP Wire
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Solution Overview
Problem
Existing charging gun systems experience failures in charging start or abnormal stops due to interference with the CP wire, which is crucial for AC charging.
Innovation Solution
The CP wire is positioned within a hollow space of the PE wire, allowing the PE wire to function as both a grounding and shielding layer for the CP wire, preventing signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the CP wire is exposed without shielding, then the cable structure is simple, but the CP wire is susceptible to interference causing charging failures
Solution Approach 1:
The PE wire is designed to perform dual functions: grounding protection and signal shielding. By making the PE wire hollow and positioning the CP wire inside it, the same component serves both safety grounding purposes and electromagnetic interference shielding, eliminating the need for a separate shielding layer and resolving the contradiction between reliability improvement and structural complexity
Solution Approach 2:
The CP wire is nested inside the hollow PE wire, creating a protective enclosure. This nested configuration allows the outer PE wire to act as a shielding layer for the inner CP wire, providing interference protection while maintaining a compact cable structure without adding external shielding components
2Object-affected harmful factors
If a separate shielding layer is added for the CP wire, then signal interference is reduced, but the cable structure becomes more complex
Solution Approach 1:
The PE wire is designed to perform dual functions: grounding protection and signal shielding. By making the PE wire hollow and positioning the CP wire inside it, the same component serves both safety grounding purposes and electromagnetic interference shielding, eliminating the need for a separate shielding layer and resolving the contradiction between reliability improvement and structural complexity
Solution Approach 2:
The grounding function and shielding function are merged into a single PE wire component. Instead of having separate grounding wire and shielding layer, the hollow PE wire structure combines both functions, reducing the number of components and simplifying the overall cable structure while still providing interference protection
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 effectively shields the CP wire from interference, ensuring stable signal transmission and preventing charging failures or abnormal stops.
Implementation Method 1
The PE wire is configured to be a shielding layer of the CP wire
Data Source
AI summary
A charging gun cable includes a first L line, an N line, a PE line and a CP line. The PE line includes a hollow space, the CP line is located in the hollow space of the PE line, and the first L line, the N line and the PE line are disposed adjacent to each other.