Method and device for electrically charging electric vehicles
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Solution Overview
Problem
Existing electric vehicle charging systems face inefficiencies and increased environmental and operational costs due to inadequate cooling solutions for multiple charging pillars and power electronics, leading to higher system costs and ecological burdens.
Innovation Solution
A cooling system that utilizes a centralized cooling unit connected via multiple cooling medium lines to heat exchangers in electric charging devices and power electronics, optimizing material usage and efficiency by arranging power electronics in shared housings and allowing for a throughflow rate of 100 liters per minute with minimal pressure loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate cooling systems are used for each charging device and power electronics, then each device can be cooled effectively, but system costs and service costs increase significantly
Solution Approach 1:
The patent combines multiple separate cooling systems into a single centralized cooling unit that serves multiple charging devices and power electronics apparatuses. The cooling unit includes a single compressor, condenser, and evaporator system that provides cooling to multiple components through shared refrigerant lines, thereby reducing system costs and service costs while maintaining effective cooling.
Solution Approach 2:
The centralized cooling unit is designed to perform multiple cooling functions simultaneously for different components (charging devices and power electronics apparatuses). The system uses a universal cooling medium distribution network that can serve multiple purposes through a single integrated design, reducing the overall burden on the environment and lowering construction costs.
2Reliability
If multiple separate housings are used for each power electronics apparatus, then each apparatus is protected independently, but material usage increases
Solution Approach 1:
The patent combines multiple power electronics apparatuses into a single shared housing structure. This consolidated housing provides protection for all apparatuses while reducing the total amount of housing material required compared to providing separate housings for each apparatus. The shared housing design maintains protective functionality while minimizing material consumption.
3Reliability
If individual cooling medium lines are routed to each heat exchanger and power electronics apparatus, then each component receives adequate cooling, but the use of cooling medium lines increases
Solution Approach 1:
The patent segments the cooling medium distribution into hierarchical levels: a main cooling medium line from the cooling unit that branches into fewer primary lines, which then branch into secondary lines serving specific heat exchangers and power electronics apparatuses. This segmented approach reduces the total length and material of cooling medium lines compared to fully individual routing, while ensuring adequate cooling delivery to each component.
Solution Approach 2:
The patent merges multiple cooling medium lines into shared sections where possible. For example, multiple power electronics apparatuses in the same housing share common cooling medium lines, and heat exchangers are routed through shared line sections. This merging strategy reduces the overall quantity of cooling medium lines required while maintaining reliable cooling delivery to all components.
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 solution reduces system costs and ecological impact while enhancing efficiency by providing economical and effective cooling for multiple electric vehicle charging devices and power electronics, allowing for reduced material usage and improved operational efficiency.
Implementation Method 1
A first cooling medium line (108A) connects on the inflow side the cooling unit (102) and a first heat exchanger (110A) in a first charging device (104A)
Data Source
AI summary
A method and device or electrically charging electric vehicles, wherein a cooling unit makes available a cooling medium, wherein the cooling unit is designed to cool, with the cooling medium, at least two electric charging devices and at least two power electronics apparatuses which are designed to electrically charge electric vehicles.