Charging Pile Power Conversion Module Merging DC/DC Converters
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Solution Overview
Problem
Conventional DC charging piles face issues with high cost, weight, volume, and reliability due to redundant hardware design and parallel connection of multiple power conversion modules, leading to increased complexity and failure rates.
Innovation Solution
The charging pile incorporates an AC distribution unit, a power assigning unit, and multiple DC/DC converters connected through a single rectifier module, reducing redundancy and improving integration, with a centralized or distributed control system for efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple power conversion modules are connected in parallel to obtain different power levels, then the power capacity is improved, but the cost, weight, and volume increase due to redundant hardware design
Solution Approach 1:
The patent merges multiple DC/DC converters into a single integrated power conversion module, combining their functions into one unified structure. This eliminates the need for separate parallel modules, thereby reducing weight while maintaining the required power capacity through intelligent power management and modular design within the integrated unit.
2Power
If multiple power conversion modules are connected in parallel to obtain different power levels, then the power capacity is improved, but the cost, and volume increase due to redundant hardware design
Solution Approach 1:
The patent merges multiple DC/DC converters into a single integrated power conversion module, combining their functions into one unified structure. This eliminates the need for separate parallel modules, thereby reducing volume while maintaining the required power capacity through intelligent power management and modular design within the integrated unit.
3Adaptability or versatility
If a large number of power conversion modules are connected in parallel, then different power levels can be obtained, but the reliability decreases due to high possibility of failures
Solution Approach 1:
The patent merges multiple DC/DC converters into a single integrated power conversion module with unified control. This reduces the total number of independent components and connection points, thereby improving reliability while maintaining power level flexibility through internal modular architecture and intelligent power management within the integrated unit.
Solution Approach 2:
The integrated power conversion module incorporates centralized control and monitoring systems that provide real-time feedback on the status of internal converter units. This enables proactive fault detection and management, improving overall system reliability while maintaining the ability to deliver different power levels through controlled operation of internal modules.
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 design enhances the utilization of components, reduces the cost and volume of the charging pile, and improves reliability by integrating multiple DC/DC converters, allowing for finer power assignment and reduced complexity.
Implementation Method 1
The power conversion unit includes one rectifier module and n direct current DC/DC converters
Implementation Method 2
n isolated direct current DC/DC converters
Data Source
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Figure 3
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AI summary
A charging pile and a charging unit of a charging pile are provided. The charging pile includes an AC distribution unit, a power assigning unit, and at least one power conversion unit. The power conversion unit includes one rectifier module and multiple DC/DC converters. An input terminal of the charging unit is connected to an AC side of the power conversion unit through the AC distribution unit. In the power conversion unit, a DC side of the rectifier module is connected to input terminals of the multiple DC/DC converters. Output terminals of the DC/DC converters in the power conversion unit are configured to charge an electric device through the power assigning unit.