Battery Pack Module Detection for Stable Power Output
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Solution Overview
Problem
Battery packs may not supply appropriate power to loads when the number of battery modules is less than a preset value, leading to unstable and potentially damaging excessive output, as the master controller needs to estimate the number of slave controllers accurately to prevent such issues.
Innovation Solution
A battery pack system with a master controller that uses a communication cable with identification terminals to detect the number of slave controllers connected, comparing this number to the expected number to ensure proper operation and prevent damage by stopping the battery pack's operation if they do not match.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the number of battery modules is less than a preset value, then the battery pack can be more compact and portable, but the battery pack cannot supply appropriate power to the load and may produce excessive output that damages the battery modules
Solution Approach 1:
The master controller performs preliminary detection of the number of slave controllers before the battery pack operates. By detecting the actual number of connected slave controllers and comparing it with the expected number, the system determines whether to allow operation in advance, preventing excessive output that could damage battery modules while enabling compact configurations when safe
2Productivity
If the master controller previously determines the number of battery modules, then the power supply can be optimized for the load, but the system complexity increases due to the need for detection and comparison mechanisms
Solution Approach 1:
The master controller uses feedback from the detection mechanism to determine the actual number of slave controllers. By continuously monitoring and comparing the detected number with the expected number, the system adjusts its operation state (allowing or preventing operation) to maintain optimal power supply efficiency while managing control complexity through a straightforward detection-comparison-decision logic
Data Source
AI summary
Provided is a method of controlling a battery pack, and a battery pack controlled by the method. A battery pack includes a plurality of slave battery modules, each of the slave battery modules including a battery that includes at least one battery cell and a slave controller that is configured to control charge and discharge of the battery, a master battery module including a master controller that is configured to control the slave controller, and a communication cable having formed thereon a first port to which the master controller is connected and a plurality of second ports to which the slave controller is connected. The first port includes an identification terminal configured to output an identification signal which is an electrical signal corresponding to the number of the second ports. A method of controlling the battery pack is provided.