EV Charging Management with Dynamic Power and Bay Allocation
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Solution Overview
Problem
Conventional charging points provide fixed charging power, leading to inefficient allocation of charging resources and low overall charging efficiency for electric vehicles with varying charging needs.
Innovation Solution
An intelligent charging management system that determines the chargeable power value for each electric vehicle based on its operation mode and the available capacity of the charging point, and allocates suitable charging parking lots, enabling precise and efficient charging by automatically adjusting power and parking lot allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed charging power is provided to all electric vehicles, then the charging point operation is simple to manage, but the charging efficiency is low because it cannot allocate power according to different charging needs
Solution Approach 1:
The charging power is made dynamic rather than fixed. The system automatically adjusts the charging power based on real-time monitoring of electric vehicle battery states, charging needs, and grid conditions. Each charging pile can independently modulate its output power, transforming the static charging system into a dynamic one that adapts to varying demands, thereby improving charging efficiency without requiring complex manual management.
Solution Approach 2:
The system implements closed-loop feedback control by continuously monitoring the charging status, battery state of charge, and power consumption of each electric vehicle. This feedback information is used to automatically adjust the charging power allocation in real-time. The feedback mechanism enables the charging management system to optimize power distribution dynamically, improving charging efficiency while maintaining automated operation that reduces management complexity.
2Productivity
If charging power is automatically allocated based on different charging needs, then charging efficiency is improved, but the system complexity increases
Solution Approach 1:
The electric vehicles themselves provide information about their charging needs through onboard devices that communicate with the charging management system. The vehicles essentially serve themselves by declaring their power requirements, and the system automatically matches them with appropriate charging piles and power levels. This self-service approach enables automatic power allocation without requiring complex centralized control, as the system leverages information provided by the vehicles themselves.
Solution Approach 2:
The charging management system is segmented into independent charging pile units, each capable of autonomous power allocation decisions. Rather than a single complex centralized controller, multiple simpler charging piles independently manage their own power distribution based on local conditions and vehicle requests. This segmentation reduces overall system complexity while maintaining automated power allocation capabilities across the entire charging station.
3Measurement precision
If charging piles are equipped with communication devices and control units, then precise power allocation is enabled, but the device complexity and cost increase
Solution Approach 1:
The control units and communication devices in each charging pile are designed to perform multiple functions: monitoring vehicle battery status, calculating optimal power allocation, controlling charging current, and communicating with both vehicles and the central management system. By making these components multi-functional, the system achieves precise power allocation without adding separate dedicated devices for each function, thereby minimizing the increase in device complexity and cost.
Data Source
AI summary
The present disclosure is related to an intelligent charging management system, a charging management device, and a charging management method. The charging management device is used to execute the charging management method for determining a chargeable power value of the electric vehicle according to an operation mode of the electric vehicle and an available capacity of a charging point, and determining a charging parking lot for providing to the electric vehicle according to the chargeable power value of the electric vehicle and available charging parking lots of the charging point. In the way, the charging power and charging parking lots of the charging point can be allocated according to the charging requirements of electric vehicles, electric vehicles can be accurately and efficiently charged and the damage caused by charging current to the battery is reduced, so as the purpose for improving charging efficiency of the charging point is determined.