Storage Battery Management System Dynamic Current Distribution
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Solution Overview
Problem
Conventional storage battery management systems manage charging and discharging in a limited manner, maintaining charge power at a fixed value, which limits the efficient use of storage batteries.
Innovation Solution
A storage battery management system that includes multiple converters controlling input currents, with a controller calculating a total current command value and a distributor assigning input current command values based on preset rules considering factors like charge rates, voltages, and states of charge, to optimize charging and discharging processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If charge power amount is maintained at the same specified value in all storage batteries, then control is simplified, but charging and discharging efficiency is reduced
Solution Approach 1:
The patent applies local quality by distributing different current command values to different storage batteries based on their individual characteristics. The distributor generates multiple input current command values from a total current command value, assigning each storage battery a specific current level according to its state of charge, capacity, and other parameters. This allows each battery to operate at its optimal point rather than forcing uniform control across all units.
Solution Approach 2:
The patent implements dynamics by continuously adjusting current command values based on real-time battery states. The controller monitors parameters such as state of charge, temperature, and capacity, then dynamically redistributes current commands to optimize charging and discharging efficiency. This dynamic adjustment allows the system to adapt to changing conditions and maximize productivity while maintaining safe operation.
2Productivity
If multiple storage batteries are managed with individual current control, then charging and discharging efficiency is improved, but system complexity increases
Solution Approach 1:
The patent merges the control functions by having a single controller generate a total current command value that is then distributed to multiple storage batteries. The distributor acts as an intermediary that takes one aggregate command and splits it into individual battery commands based on current states. This combining approach maintains centralized control logic while enabling differentiated individual control, avoiding the need for completely independent control systems for each battery.
Solution Approach 2:
The distributor functions as an intermediary component between the controller and individual storage batteries. It receives the total current command value from the controller and translates it into appropriate individual current commands for each battery based on their specific states. This mediator layer simplifies the overall system architecture by handling the complexity of individual battery management in a centralized manner rather than requiring direct complex control logic in each battery management unit.
Data Source
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AI summary
A storage battery management system is equipped with a plurality of storage batteries (10, 20) and a plurality of converters (12, 22) for controlling the respective input currents of a plurality of storage batteries (10, 20), each of which is at least one of the charging current and the discharging current. The storage battery management system comprises: a controller (3) for calculating the total current command value for controlling the input currents of the storage batteries (10, 20); and a distributor (2) for generating a plurality of input current command values to be assigned to the respective converters according to a rule preset based on the total current command value calculated by the controller (3) and supplying the input current command values to the respective converters (12, 22).