Triangular Relay Topology for Expandable EV Multi-Channel Charging
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Solution Overview
Problem
Multi-channel charging systems for electric vehicles require a large number of relays, leading to increased installation costs and complex control algorithms, making expansion difficult.
Innovation Solution
A multi-channel charging system using a triangular connection structure that shares power modules between triangular connections, reducing the number of relays required and simplifying the system design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-channel charging system uses traditional connection structures, then the number of channels can be increased, but the number of relays increases significantly and the system becomes complex
Solution Approach 1:
The charging system is segmented into multiple triangular connection units, each handling a subset of power modules. By dividing the overall system into these modular triangular segments, the patent reduces the relay count per segment while maintaining multi-channel capability across the entire system.
Solution Approach 2:
Power modules are designed to serve multiple functions by being shared across different triangular connections. Each power module can participate in multiple triangular units, allowing the same hardware to support multiple charging channels through different connection configurations.
2Productivity
If more power modules are added to increase charging channels, then system capability improves, but installation cost increases due to more relays
Solution Approach 1:
Multiple triangular connections are merged by sharing common power modules and relays between them. This consolidation allows the system to achieve higher productivity with multiple charging channels while reducing the total number of relays required, thereby lowering installation costs.
Solution Approach 2:
The patent transitions from a conventional two-dimensional matrix connection to a three-dimensional triangular connection structure where power modules can be shared across multiple triangular planes. This dimensional change enables more efficient resource utilization and reduces the overall relay count.
3Adaptability or versatility
If traditional connection structures are used, then multi-channel output can be achieved, but expansion becomes difficult and control algorithms become complicated
Solution Approach 1:
The triangular connection structure provides a dynamic and flexible framework where connections can be easily reconfigured by adjusting relay states. This dynamic topology allows for simple expansion by adding or removing triangular units without requiring complex control algorithm changes.
Solution Approach 2:
The system is designed with preliminary triangular connection units that can be pre-configured and then easily expanded by adding more triangular units. This modular preliminary structure simplifies future expansion and maintains control algorithm simplicity through consistent connection patterns.
Data Source
AI summary
The present disclosure relates to an expansion type output control system with easy node change based on a triangular connection structure capable of easy dispersive expansion which can reduce design cost through forming a multi-channel charging system based on a relatively simple triangular structure, comprises first to n-th (n is a natural number greater than or equal to 2) triangular connections each comprising 3 power supply power modules connected to each other with the relay; and p output terminals (p is a natural number greater than or equal to 4) connected to the first to n-th triangular connections, wherein the first to n-th triangular connections are connected to each other.