Battery Controller Position Identification in Energy Storage Containers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current energy storage systems with distributed battery management systems face challenges in accurately identifying the physical position of controllers, leading to potential misoperations during production, assembly, delivery, and spare part replacement, which compromises security and reliability.
Innovation Solution
The system employs a three-level controller architecture with a first controller managing the energy storage container, second controllers managing battery clusters, and third controllers managing battery packs, using a CAN bus for series connections and an Ethernet ring network with RSTP to determine physical positions without the need for hardware labels, ensuring accurate and efficient identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dual in-line package switch is added for each controller with binary encoding to identify physical positions, then the physical position of controllers can be identified, but the system complexity increases and misoperations are likely to occur during production, assembly, delivery, and spare part replacement
Solution Approach 1:
The controller automatically determines its own physical position by detecting the connection state of its input interface. The controller serves itself by using its own detection capability to identify its position without external intervention or manual configuration, thereby eliminating the need for dual in-line package switches and manual binary encoding setup
Solution Approach 2:
The patent replaces the mechanical hardware labeling system (dual in-line package switches) with an electrical signal-based automatic detection system. The controller uses electrical connection state detection through its input interface to determine physical position, substituting mechanical configuration with automated electronic identification
2Reliability
If manual configuration of dual in-line package switches is performed for each controller, then physical positions can be set, but misoperations are likely to occur reducing security and reliability
Solution Approach 1:
The controller automatically determines its own physical position by detecting the connection state of its input interface. This self-service mechanism eliminates manual configuration operations entirely, preventing misoperations and improving reliability without compromising ease of operation
Solution Approach 2:
The controller uses feedback from its input interface connection state to automatically determine its physical position. The detection result feeds back to the controller's internal logic, enabling automatic position identification without manual intervention, thereby eliminating misoperation risks
3Productivity
If the quantity of controllers increases to manage larger energy storage containers, then management efficiency improves, but the difficulty of locating and maintaining controllers increases
Solution Approach 1:
Each controller automatically determines its own physical position through input interface detection, enabling self-identification without external assistance. This self-service capability allows rapid location of any controller in the system regardless of scale, maintaining ease of maintenance even as system size and controller quantity increase
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
This application provides an energy storage system, a physical position identification method, and a photovoltaic power generation system, and relates to the field of energy storage system technologies. The energy storage system includes at least one energy storage container, and the energy storage container includes a battery management system and m battery clusters. Third controllers corresponding to n battery packs in each battery cluster determine a first third controller connected in series, and set a physical position of the first third controller to a first physical position. An ith third controller in the third controllers corresponding to the n battery packs in each battery cluster determines a physical position of the ith third controller based on a position signal sent by an (i-1)th third controller, where i=2, 3, ..., or n. A first controller determines physical positions of remaining second controllers according to a rapid spanning tree protocol (RSTP) and a known physical position of a second controller. This solution is used, so that a misoperation is avoided, and security and reliability of the battery management system are improved.