Battery Output Derating for Reliable Energy Storage Control
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Solution Overview
Problem
Energy storage systems face challenges in adapting to diverse uses and purposes, leading to potential inoperability due to battery voltage fluctuations and disconnection of external signals, which affects operational reliability.
Innovation Solution
A method and system for managing energy storage systems that determine an output control interval based on battery properties, operate the battery with derating outputs, and utilize reserve signals to prevent inoperability and ensure reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the battery operates without output control to meet diverse energy storage needs, then the system has high adaptability, but the battery voltage fluctuates causing inoperability and reduced reliability
Solution Approach 1:
The patent implements dynamic output control by determining an output control interval based on battery properties and adjusting the derating output accordingly. The control interval is dynamically set between a first time point and a second time point, allowing the system to adapt to diverse energy storage needs while maintaining battery voltage within safe operating ranges, thus preventing inoperability and ensuring operational reliability.
2Productivity
If the battery operates at full output capacity, then the productivity is high, but the battery may enter an inoperable state due to voltage reaching limiting levels
Solution Approach 1:
The patent applies partial action by determining a derating output that is less than the full battery output capacity. This derating output is calculated based on the output control interval and is used to control the battery operation, preventing the battery voltage from reaching limiting charge and discharge voltages that would cause inoperability, while still maintaining adequate productivity.
3Reliability
If the system uses complex control logic to manage battery operations, then the operational reliability is improved, but the device complexity increases
Solution Approach 1:
The patent manages complexity by changing key parameters: it determines an output control interval based on battery properties, calculates a derating output using these parameters, and controls the battery operation accordingly. This parameter-based approach improves operational reliability while keeping the control logic manageable through systematic parameter determination rather than complex conditional control.
4Productivity
If the battery operates continuously without interruption, then the productivity is maintained, but the system cannot respond to external signal disconnections and loses reliability
Solution Approach 1:
The patent implements preliminary action by determining an output control interval in advance based on battery properties before operation begins. This pre-determined control framework allows the system to maintain continuous battery operation for productivity while having the structural capability to respond to external signal disconnections, as the control logic is already established to monitor and adjust output based on the predetermined interval.
Data Source
AI summary
A method for managing an energy storage system is provided. The method includes the steps of: determining an output control interval of a battery included in the energy storage system with reference to properties of the battery; determining a first preset output at a time point when the output control interval starts, and a second preset output at a time point when the output control interval ends; and operating the battery with reference to a derating output formed on the basis of the first preset output and the second preset output.