Three-Phase EV Charging Modules for Balanced Multi-Vehicle Charging
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Solution Overview
Problem
Existing electric vehicle charging stations require multiple charging piles to charge multiple vehicles simultaneously, leading to increased costs and reduced charging efficiency due to queuing, and there is a need to ensure three-phase balance and safety during charging.
Innovation Solution
A charging apparatus with three charging modules, each receiving a voltage from the AC grid with the same frequency and amplitude and a 120-degree phase difference, allowing simultaneous charging of three vehicles while maintaining three-phase balance and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple charging piles are configured to charge multiple electric vehicles simultaneously, then charging efficiency is improved, but cost increases
Solution Approach 1:
The charging apparatus is divided into three independent charging modules, each capable of charging one electric vehicle simultaneously. Each module has its own charging interface and control circuitry, allowing parallel charging operations while sharing common support structures and control systems, thus improving charging efficiency without proportionally increasing costs
Solution Approach 2:
The charging apparatus is designed as a multi-functional unit that can serve multiple electric vehicles simultaneously through three charging modules. The system provides universal charging capability for different vehicles while sharing common infrastructure such as the AC grid connection, control unit, and housing structure, achieving cost-effective multi-vehicle charging
2Quantity of substance
If limited number of charging piles are used to reduce cost, then cost decreases, but charging efficiency reduces due to queuing
Solution Approach 1:
The patent combines three charging functions into a single integrated charging apparatus housing. Multiple charging modules are merged within one structure, sharing common AC grid connections, control systems, and support infrastructure. This merging approach enables simultaneous charging of multiple vehicles while avoiding the need for separate standalone charging piles, thus improving charging efficiency without proportionally increasing costs
3Productivity
If three-phase AC grid is used for simultaneous charging, then charging efficiency is improved, but three-phase balance and safety must be ensured
Solution Approach 1:
The control unit continuously monitors the charging status of all three modules and the AC grid connection state. It dynamically adjusts charging parameters to maintain three-phase balance, detects abnormal conditions such as loose connections or component failures, and automatically responds to ensure safe operation. This feedback mechanism enables efficient simultaneous charging while maintaining system reliability and safety
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
The apparatus simplifies the circuit structure, reduces costs, and enhances charging efficiency by allowing multiple vehicles to charge simultaneously while ensuring three-phase balance and safety, avoiding component damage and electric shocks.
Implementation Method 1
the first charging module is configured to receive a first voltage of an AC grid, convert the first voltage into a first output voltage, and provide the first output voltage to a first device to be charged for charging
Data Source
AI summary
A charging apparatus, a charging method and a charging system are provided. The charging apparatus includes three charging modules. A first charging module receives a first voltage of an AC grid, converts the first voltage into a first output voltage, and provides the first output voltage to a first device for charging. A second charging module receives a second voltage of the AC grid, converts the second voltage into a second output voltage, and provides the second output voltage to a second device for charging. A third charging module receives a third voltage of the AC grid, converts the third voltage into a third output voltage, and provides the third output voltage to a third device for charging. The first voltage, the second voltage and the third voltage have the same frequency and amplitude, and the phase difference is 120 degrees.