Direct-Cooled EV Charging Cable Using Conductive Fluid Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High current flow in electric vehicle charging cables generates excessive heat, leading to safety hazards, component damage, and bulkiness, which traditional insulation methods fail to adequately address, especially in high-power applications like semi-tractor electric vehicles.
Innovation Solution
A direct cooling system utilizing a water-based conductive fluid with ethylene glycol mix, combined with a feedback loop and ion filters, to manage electrical resistance and prevent electrolysis, arc generation, and hydrogen production, allowing for efficient heat dissipation without increasing cable bulk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If larger conductors are used to handle higher current draws, then heat generation is managed, but cable bulk, cost, and handling difficulty increase
Solution Approach 1:
A cooling fluid acts as an intermediary substance that flows through channels in the cable, absorbing heat from the conductors and transferring it away. This mediator enables heat management without requiring larger conductor cross-sections, thus maintaining cable flexibility and handling ease while managing thermal effects of high current.
2Object-affected harmful factors
If traditional thermal insulation is used to prevent heat transmission, then heat protection is provided, but cable bulkiness increases
Solution Approach 1:
The patent employs a hydraulic cooling system where fluid flows through integrated channels to actively remove heat from conductors. This active thermal management via fluid dynamics replaces passive thermal insulation, providing heat protection without increasing cable bulkiness and actually reducing it by eliminating insulating layers.
3Power
If higher current flow is permitted, then charging power is increased, but heat generation and safety hazards increase
Solution Approach 1:
The cooling fluid serves as a safety intermediary that continuously removes excess heat generated during high-power charging operations. By maintaining thermal safety through active cooling, the system enables higher current flow and charging power without compromising safety, as the heat is actively managed rather than passively tolerated.
Solution Approach 2:
The system incorporates temperature sensing and control mechanisms that monitor thermal conditions and adjust cooling fluid flow accordingly. This feedback loop ensures that even at high power levels, temperature remains within safe operating parameters, enabling higher charging power while maintaining safety through dynamic thermal management.
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
Enables higher current transmission with reduced heat generation, enhancing safety and usability by maintaining a lightweight, flexible charging cable design while minimizing the risk of hydrogen generation and arc formation.
Implementation Method 1
A direct cooling system utilizing a water-based conductive fluid with ethylene glycol mix, combined with a feedback loop and ion filters, to manage electrical resistance and prevent electrolysis, arc generation, and hydrogen production, allowing for efficient heat dissipation without increasing cable bulk.
Implementation Method 2
A direct cooling system utilizing a water-based conductive fluid with ethylene glycol mix, combined with a feedback loop and ion filters, to manage electrical resistance and prevent electrolysis, arc generation, and hydrogen production
Data Source
AI summary
A direct cooling method and system in charging system utilizing a water-based conductive fluid. The charging system includes a conductive fluid reservoir that provides conductive fluid to charging system components. The charging system further defines conductive fluid return paths for the conductive fluid. The length of a fluid path is specified to exceed a minimal resistance threshold based on the product of the resistivity and return path length. The system can include the incorporation of feedback loop into the charging system that can measure the electrical resistance of the conductive fluid.