High-Power EV Charging Station With EMI-Managed DC/DC Conversion
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Solution Overview
Problem
Conventional charging stations for electric vehicles require significant time for battery recharging, often occupy a single station for hours, and lack efficient electromagnetic protection, leading to inefficiencies and long wait times.
Innovation Solution
A high-power charging station with a DC/DC converter and electronic filters controlled by a control unit to suppress unwanted frequencies, communicating with vehicles for specific electromagnetic requirements, and a transportable system with integrated battery packs and cooling mechanisms for flexible deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional AC charging stations are used, then vehicles can be charged, but the recharging process takes several hours and occupies the station for a long time
Solution Approach 1:
The patent changes the electrical parameters by using DC/DC conversion with controlled switching frequencies and electronic filtering to enable high-power fast charging while managing electromagnetic interference, allowing rapid battery recharging without prolonged station occupation
2Power
If DC/DC converter operates at high power, then fast charging is achieved, but unwanted frequencies and electromagnetic interference are generated
Solution Approach 1:
The patent converts the harmful electromagnetic frequencies generated by the DC/DC converter into manageable signals by using electronic filters controlled by a control unit, which selectively suppress unwanted frequencies while maintaining the beneficial high-power charging function
Solution Approach 2:
The control unit acts as an intermediary between the DC/DC converter and the charging output, coordinating the switching operations and filter activation to minimize electromagnetic interference while preserving charging efficiency
3Object-affected harmful factors
If electronic filters are activated to suppress frequencies, then electromagnetic protection is improved, but electrical losses increase
Solution Approach 1:
The patent implements dynamic control of the electronic filters through a control unit that adjusts filter activation and switching frequencies based on real-time charging conditions, optimizing the balance between electromagnetic protection and energy efficiency
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 fast charging of over 1 Megawatt with minimal electrical losses and electromagnetic interference, allowing for flexible deployment and scalability to meet demand, reducing wait times and infrastructure dependency.
Implementation Method 1
a DC/DC converter adapted to convert electrical DC power
Implementation Method 2
a suppression of unwanted frequencies generated by the DC/DC converter by means of electronic filters
Implementation Method 3
an AC/DC converter adapted to convert AC power from a local or public power supply grid into a DC power
Data Source
AI summary
A high power charging station used to exchange electrical power with a battery of an electrically powered vehicle by means of a power cable connecting the high power charging station with the vehicle, wherein the high power charging station comprises a DC/DC converter adapted to convert electrical DC power, wherein a suppression of unwanted frequencies generated by the DC/DC converter by means of electronic filters is controlled by a control unit of the high power charging station.