Ground-Embedded EV Charging Cooling Unit
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Solution Overview
Problem
Conventional battery charging systems for electric vehicles require separate high-capacity cooling devices for rapid charging, increasing costs and reducing energy density due to the installation of air conditioning units within the vehicles.
Innovation Solution
A battery charging system with a cooling unit buried in the ground that blows air towards the electric vehicle's battery during charging, eliminating the need for a high-capacity cooling device within the vehicle and incorporating a movable cooling stage with a heat sensing unit and gate to optimize cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a high-capacity cooling device is installed within the electric vehicle for rapid charging, then the battery cooling capacity is sufficient, but the cost increases and energy density decreases
Solution Approach 1:
The cooling function is extracted from the vehicle and relocated to the charging station. The charging station is equipped with a cooling unit that provides cooling air to the battery during charging, eliminating the need for a high-capacity cooling device within the vehicle itself.
Solution Approach 2:
A cooling unit is introduced as an intermediary component at the charging station. This cooling unit supplies cooling air through a charging cable connection to the battery, serving as a mediator between the charging infrastructure and the battery thermal management needs.
2Productivity
If a separate high-capacity cooling device is provided for rapid charging, then rapid charging with sufficient cooling is achieved, but the battery pack structure becomes more complex and costly
Solution Approach 1:
The cooling function is merged with the charging infrastructure. The charging station integrates both charging and cooling functions, where the cooling unit operates in conjunction with the charging process to provide thermal management during rapid charging without requiring separate vehicle-mounted cooling systems.
Solution Approach 2:
The charging station is designed with multi-functionality, serving both as a power supply source and a cooling source. The cooling unit can provide cooling air during charging operations, making the charging station a universal infrastructure that handles both energy delivery and 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 rapid charging while efficiently cooling the battery without additional cooling devices, simplifying the battery pack structure, reducing costs, and increasing energy density by providing effective cooling directly at the charging station.
Implementation Method 1
a cooling unit disposed at a point where the electric vehicle stops in charging to supply a cooling air toward the battery of the electric vehicle
Data Source
AI summary
Disclosed herein is a battery charging system of an electric vehicle charging station, the battery charging system including: a charging unit configured to supply an electrical power to charge a battery of an electric vehicle; a charging cable connected to the charging unit and having a connector attached thereto to correspond to an inlet of the electric vehicle; and a cooling unit disposed at a location where the electric vehicle is parked in charging to supply a cooling air toward the battery of the electric vehicle.