Battery Rack Voltage Measurement Relay Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery racks in energy storage systems can be damaged due to abnormal connections between battery modules and relays, leading to short-circuit phenomena, which cause overheating and swelling, especially when the relay is installed without an external load, resulting in capacitance imbalance and uneven charging speeds.
Innovation Solution
A system comprising a voltage measuring unit, a comparing unit, and a relay controller that measures the voltage across battery racks, compares it to a predetermined limit value, and controls the operation states of precharge and main relays to prevent short-circuits by blocking current flow when the voltage falls below the limit, thereby preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay is installed to protect the battery rack from overcharging and overdischarging, then the reliability of the battery rack is improved, but the risk of short-circuit phenomenon increases when the relay is abnormally installed without an external load
Solution Approach 1:
The voltage measuring unit measures the voltage across the battery rack before the relay is activated. The comparing unit compares this voltage with a predetermined voltage limit value in advance. If the voltage is below the limit (indicating abnormal connection), the relay controller prevents the relay from closing, thereby preventing the short-circuit phenomenon before it occurs.
Solution Approach 2:
The voltage measuring unit and comparing unit act as intermediary components between the power supply and the relay. They monitor the voltage condition and provide feedback to the relay controller, which then decides whether to activate the relay. This intermediary mechanism ensures that the relay only closes under normal conditions, preventing short-circuits while maintaining protection functionality.
2Productivity
If the relay is activated without voltage verification, then the charging speed is improved, but the battery rack may be damaged due to overheating or swelling from short-circuit
Solution Approach 1:
Before activating the relay to enable fast charging, the voltage measuring unit measures the voltage and the comparing unit verifies it against the predetermined limit. Only when the voltage meets the requirement does the relay controller activate the relay. This preliminary verification ensures that the battery rack is in a safe state before high-current charging begins, preventing damage while maintaining charging speed.
3Reliability
If voltage measurement and comparison units are added to prevent short-circuit, then the safety of the battery rack is improved, but the device complexity increases
Solution Approach 1:
The voltage measuring unit serves multiple functions: it monitors the voltage across the battery rack, provides feedback for relay control decisions, and enables the comparing unit to detect abnormal conditions. This multi-functional design prevents short-circuits without requiring entirely separate safety systems, thereby limiting the increase in device complexity while improving reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively prevents battery rack damage by blocking current flow before a short-circuit occurs, preventing overheating, swelling, and capacitance imbalance, ensuring safe and balanced charging across battery racks.
Implementation Method 1
measuring a voltage value of a battery rack
Implementation Method 2
controlling operation states of a precharge relay and a main relay... to block a current flowing in the battery rack
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to an apparatus, a system, and a method of preventing a battery rack from being damaged by measuring a voltage, and more particularly, an apparatus, a system, and a method of preventing a battery rack from being damaged by measuring a voltage, which, when a battery module is abnormally connected with a relay in some battery racks in installing the relay, which conducts or blocks a current flowing in the battery rack including a plurality of battery modules, so that a voltage smaller than a predetermined voltage limit value is applied to the battery rack, prevent a short-circuit phenomenon that may occur in the battery rack in which the relay is abnormally installed, by controlling an operation state of the relay before the battery rack and the relay form a short circuit, thereby preventing the battery rack from being damaged.