Charging Pile Power Scheduling for Accurate EV Output
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Solution Overview
Problem
Conventional electric vehicle charging pile systems fail to accurately meet the power requirements of vehicles, leading to poor usability due to inefficiencies in power distribution and allocation.
Innovation Solution
The proposed method involves a charging pile system with an AC/DC module, a bus module, a power scheduling module, and DC/DC modules, which convert and distribute power efficiently to match the voltage and current needs of electric vehicles, using a power scheduling module to determine and allocate power based on the needs of connected vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple charging modules are connected in parallel with switch components, then the charging pile system can provide power to electric vehicles, but the power output cannot accurately meet the needed power of the electric vehicle
Solution Approach 1:
The charging pile system divides the charging function into multiple independent DC/DC modules, each capable of independent power conversion and control. Each module can be individually configured to provide precise power output, replacing the coarse parallel connection approach with fine-grained modular control.
Solution Approach 2:
The system implements dynamic power adjustment by allowing each DC/DC module to independently regulate its output based on real-time power requirements. The power scheduling module dynamically allocates power resources, enabling the system to adaptively meet varying power demands of electric vehicles rather than using fixed parallel connections.
2Ease of operation
If multiple charging modules are connected in parallel, then the charging pile system can charge electric vehicles, but the usability is poor due to inaccurate power matching
Solution Approach 1:
The power scheduling module continuously monitors the power requirements of electric vehicles and adjusts the output of each DC/DC module in real-time based on feedback signals. This closed-loop control ensures accurate power matching and improves both usability and reliability by dynamically adapting to changing charging demands.
Solution Approach 2:
The system changes operational parameters by allowing each DC/DC module to independently adjust its conversion ratio, output voltage, and current based on the specific requirements of connected electric vehicles. This parameter flexibility enables precise power delivery and enhances user experience.
3Ease of manufacture
If AC/DC modules convert high-voltage alternating current to high-voltage direct current, then cable diameter and costs are reduced, but the system requires complex power scheduling to distribute power accurately
Solution Approach 1:
The bus module serves as an intermediary that receives high-voltage direct current from AC/DC modules and distributes it to multiple DC/DC modules. This intermediary structure simplifies the overall system architecture by providing a centralized power distribution point, reducing the need for complex point-to-point connections while maintaining cost efficiency.
Solution Approach 2:
The bus module performs multiple functions: it combines high-voltage direct current from multiple AC/DC modules, distributes power to multiple DC/DC modules, and provides a standardized interface for power allocation. This multi-functional design reduces system complexity while maintaining the cost benefits of high-voltage direct current conversion.
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 approach ensures that electric vehicles receive the precise amount of power needed, improving the usability and user experience of the charging system by accurately meeting charging requirements and reducing waiting times.
Implementation Method 1
The AC/DC module is configured to convert an alternating current of a power supply into a direct current
Implementation Method 2
The DC/DC module is configured to convert a direct current into a direct current. Optionally, the DC/DC module is configured to convert a high-voltage direct current into a low-voltage direct current
Data Source
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AI summary
This application provides a method for managing a charging pile system (100) and the charging pile system (100). The method includes: When a first charging terminal (51) in a plurality of charging terminals (50) is connected to a first to-be-charged device (61), a power scheduling module (30) determines first needed power transmitted by a first DC/DC module (41) correspondingly connected to the first charging terminal (51), where the first needed power is needed power of the first to-be-charged device (61); the power scheduling module (30) determines total surplus power transmitted by all AC/DC modules (10), where the total surplus power is a difference between total rated power of the at least one AC/DC modules (10) and transmitted power; and the power scheduling module (30) transmits first transmit power to the first DC/DC module (41) based on a value relationship between the first needed power and the total surplus power. In this method, the charging pile system (100) can accurately meet a charging requirement of a to-be-charged device (60).