Power Storage System Integration Control for Parallel Module Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In power storage systems for hybrid vehicles and electric vehicles, managing multiple power storage devices under severe temperature conditions becomes complex, requiring a system that can easily scale and manage power storage devices connected in parallel.
Innovation Solution
A power storage system comprising multiple unit modules connected in parallel, each with a power storage device and a control device, and an integration control device that compares status information from each module to control the electrical load based on the worst value, facilitating management and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple power storage devices are connected in parallel to increase power storage capacity, then the power storage capacity increases, but the management complexity and control difficulty increase
Solution Approach 1:
The system divides the power storage system into multiple independent unit modules, each with its own control device that autonomously manages its power storage device. The integration control device coordinates these modular units, allowing the system to scale capacity by simply adding modules without proportionally increasing management complexity.
Solution Approach 2:
The integration control device acts as an intermediary between the individual control devices of unit modules and the electrical load. It collects status information from all control devices, determines the worst value, and coordinates the overall power distribution, simplifying the management architecture while handling multiple parallel power storage devices.
2Reliability
If status information from all control devices is monitored and compared to ensure safety, then system reliability improves, but the control complexity increases
Solution Approach 1:
The integration control device proactively collects status information from all control devices before making power distribution decisions. By obtaining and comparing status information in advance, it identifies the worst value and sets appropriate limitation values, preventing potential issues before they occur and ensuring reliable operation without complex real-time control.
3Reliability
If limitation control is applied based on the worst value of status information, then overcurrent prevention and safety improve, but the power utilization efficiency decreases
Solution Approach 1:
The integration control device dynamically adjusts limitation values based on the worst value of status information collected from control devices. By changing the limitation parameter adaptively rather than using a fixed conservative limit, the system prevents overcurrent while maximizing power utilization within safe operating boundaries.
Data Source
AI summary
An integration control device of a power storage system obtains pieces of status information of power storage devices from control devices of unit modules, compares the obtained pieces of status information with one another, and performs driving control of an electrical load based on a worst value of the pieces of status information.