Battery Cell Localization Using Voltage Stimulus and Unique IDs
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Solution Overview
Problem
Current battery management systems cannot accurately determine the position of individual battery cells within a battery system, leading to unnecessary replacement of entire battery packs when a fault is detected, resulting in waste of functional cells.
Innovation Solution
A method and system that utilize unique identifiers and electrical stimuli to determine the position of battery cells by measuring changes in voltage or using activation sequences, allowing for precise identification and localization of faulty cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire battery system is replaced when a fault is identified in a battery cell, then safety is ensured, but significant waste of functional cells occurs
Solution Approach 1:
The patent divides the battery system into individually identifiable battery cells, each with unique characteristics. By segmenting the monitoring and identification approach, the system can locate and address faults in specific cells rather than replacing the entire battery system, thus reducing waste of functional cells while maintaining safety
Solution Approach 2:
The patent introduces measurement devices and unique identifier systems as intermediaries between the battery cells and the replacement decision-making process. These intermediaries enable precise identification of faulty cells through their unique characteristics, allowing targeted replacement rather than blanket replacement of all cells
2Device complexity
If individual battery cell positions are not determined, then system complexity is reduced, but diagnostic capabilities are severely limited
Solution Approach 1:
The patent implements self-service identification where each battery cell inherently possesses unique characteristics or identifiers that enable automatic recognition and positioning. The measurement devices automatically detect these unique features without requiring manual tracking or complex external positioning systems, thus maintaining low system complexity while enabling precise diagnostics
Solution Approach 2:
The patent utilizes changes in measurable parameters (such as voltage, current, or other electrical characteristics) as battery cells are connected or disconnected to identify their positions. By monitoring these parameter changes during system assembly or operation, the system automatically determines cell positions without adding complex positioning hardware
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
Enables accurate positioning of battery cells, reducing waste by allowing for targeted replacement of faulty cells and improving diagnostic capabilities within battery management systems.
Implementation Method 1
each battery cell may be configured to experience a change in voltage when an electrical stimulus is applied to the battery cell
Data Source
AI summary
Methods and systems for determining a position of a battery cell within a battery system comprising a plurality of battery cells are disclosed. Each battery cell has a unique identifier, and each battery cell is configured to experience a change in voltage when an electrical stimulus is applied to the battery cell. The method comprises receiving a first signal associated with a first battery cell experiencing a change in voltage due to an electrical stimulus applied to the battery cell; obtaining the unique ID associated with the first battery cell; determining the position of the first battery cell, based on the received first signal associated with the first battery cell; and associating the determined position with the obtained unique ID of the first battery cell.