ESS BMS Protocol Bridging for EMS-to-Rack CAN Communication
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Solution Overview
Problem
Existing energy storage systems (ESS) face challenges in efficient inter-layer communication between the Enterprise Management System (EMS), the system Battery Management System (BMS), and the rack BMS, which hinders effective control and management of the ESS.
Innovation Solution
A communication method and system that enables the system BMS to receive TCPIP communication commands from the EMS, convert them to CAN format, and transmit the converted commands to the rack BMS, facilitating seamless communication across layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If direct communication between EMS and rack BMS is implemented, then communication efficiency is improved, but system complexity and firmware modification requirements increase
Solution Approach 1:
The system BMS serves as an intermediary device between the EMS and rack BMS. It receives TCPIP commands from the EMS, converts them to CAN format, and transmits them to the rack BMS. This mediator approach enables efficient cross-protocol communication without requiring direct connection or firmware modifications between EMS and rack BMS, thus resolving the technical contradiction.
2Adaptability or versatility
If protocol conversion is implemented, then communication flexibility is improved, but conversion complexity increases
Solution Approach 1:
The system BMS acts as a protocol conversion intermediary, translating TCPIP commands from the EMS into CAN commands for the rack BMS. This intermediary conversion mechanism provides communication flexibility between different protocols while concentrating the conversion complexity within a single dedicated device rather than distributing it across multiple components.
Data Source
AI summary
A communication method by which an Enterprise Management System (EMS), a system Battery Management System (BMS), and a rack BMS included in an energy storage system (ESS) communicate with each other, the communication method including receiving, by the system BMS from the EMS, a Transmission Control Protocol/Internet Protocol (TCPIP) communication command including a Controller Area Network (CAN) communication command for controlling the rack BMS, and converting, by the system BMS, TCPIP format to CAN format based on the TCPIP communication command and transmitting the converted CAN communication command to the rack BMS.