EV Charging Pile Coordination Using Single PLC and CAN
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Solution Overview
Problem
Charging stations for electric vehicles with multiple sockets and Power Line Communication (PLC) modules face high failure rates and increased costs due to complex charging logic and the need for multiple PLC modules, which complicates fault handling and reduces reliability.
Innovation Solution
A system where only one PLC module is required in the electric vehicle, with a master charging pile communicating with slave piles via Controller Area Network (CAN), determining the number of available charging devices and allocating charging requirements to optimize power distribution and simplify charging logic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple PLC modules are installed in the electric vehicle for each charging socket, then the charging capability is improved, but the device complexity and cost increase
Solution Approach 1:
The master charging pile acts as an intermediary that manages communication for multiple charging sockets. Instead of each socket having its own PLC module, the master charging pile establishes a single PLC connection with the electric vehicle and then communicates with multiple slave charging piles through CAN bus, thereby reducing the number of PLC modules needed while maintaining multi-socket charging capability.
Solution Approach 2:
The communication functions of multiple charging sockets are merged into a single PLC connection. The master charging pile combines the roles of multiple PLC modules by establishing one communication channel with the electric vehicle and then distributing charging tasks to multiple slave charging piles through alternative communication means (CAN bus).
2Adaptability or versatility
If multiple PLC modules are installed in the electric vehicle for each charging socket, then the charging capability is improved, but the reliability decreases due to complex charging logic and fault handling
Solution Approach 1:
The master charging pile serves as an intermediary that centralizes the complex charging logic and fault handling. By having a single PLC connection managed by the master charging pile, the system reduces the number of potential failure points while maintaining the ability to manage multiple charging sockets through coordinated control of slave charging piles.
Solution Approach 2:
The complex charging logic and fault handling functions are extracted from individual charging sockets and concentrated in the master charging pile. This centralization simplifies the system architecture by removing redundant communication modules from each socket while preserving the sophisticated control capabilities needed for multi-socket charging operations.
Data Source
AI summary
Disclosed is an apparatus for charging a battery comprising a first charging device configured to communicate with at least one second charging device, the first charging device and the at least one second charging device configured to charge the battery, and comprising a first controller configured to control the first charging device, wherein the first controller determines the number of the at least one second charging devices by communicating with a second controller.