Battery Power Output Management via Dynamic Discharge Control
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Solution Overview
Problem
Existing battery management systems face challenges in accurately estimating battery capacity decline due to errors in open-circuit voltage estimation, leading to reduced work efficiency as the system needs to shut down for learning processes.
Innovation Solution
A battery management apparatus and method that adjusts output power step by step via a discharge circuit, comparing calculated output power with a target power to generate a comparison result, allowing for continuous operation without shutting down the system and maintaining power supply stability by receiving power from both the battery and external DC sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If battery learning is performed to correct capacity estimation, then measurement precision of battery capacity is improved, but the system must shut down which reduces productivity
Solution Approach 1:
The patent implements dynamic power output adjustment during battery learning by continuously comparing calculated output power with target power and generating comparison results. The discharge circuit dynamically modifies power output based on unit compensation amounts and comparison results, enabling the system to perform learning operations while maintaining continuous power supply to loads, thus resolving the contradiction between measurement precision improvement and productivity maintenance
2Reliability
If the battery and external DC power share the DC bus, then power supply stability is improved, but power output control complexity increases
Solution Approach 1:
The patent employs feedback control mechanisms where the controller continuously compares calculated output power with target power, generates comparison results, and adjusts power output accordingly. This feedback loop enables stable power supply from multiple sources while managing control complexity through systematic power distribution strategies that automatically balance battery and external DC power contributions
Data Source
AI summary
A power output management apparatus of a battery and a management method thereof are provided. The management method includes: enabling a power output mode and discharging a battery to a load via a discharge circuit in the power output mode; calculating the output power of the discharge circuit during the discharge; comparing the output power and a target power to generate a comparison result; and setting the output power being adjusted step by step by a unit compensation amount via the discharge circuit according to the comparison result.