Battery Assembling Apparatus Charge Curve Selection
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Solution Overview
Problem
Conventional methods fail to extend the lifetime of two-dimensional battery cells, such as lithium-ion batteries, when assembling them into a battery pack, as they do not effectively match battery cells with similar charge curves and periods.
Innovation Solution
A battery assembling apparatus that selects battery cells with similar charge curves and periods for assembly, using a charge curve measuring and reading section to identify suitable cells and a purpose selecting section to determine the usage purpose based on these curves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If battery cells are assembled into a battery pack without selecting cells with similar charge curves, then the assembly process is simple and fast, but the lifetime of the battery cells and battery pack deteriorates prematurely due to overcharging and voltage imbalances
Solution Approach 1:
The charge curve measuring section performs preliminary measurement of charge curves for all battery cells before assembly. This advance characterization allows the selecting section to group cells with similar charge curves, ensuring consistent charging behavior and preventing overcharging during battery pack operation, thereby extending battery lifetime without adding operational complexity
Solution Approach 2:
The battery cells themselves provide the necessary information through their charge curves, which inherently contain all characteristics needed for proper matching. The system uses this self-revealed information to automatically group compatible cells, eliminating the need for external manual assessment or complex decision-making processes
2Reliability
If battery cells with similar charge curves are selected through measurement and reading, then charging consistency and battery lifetime are improved, but the assembling process becomes more complex and time-consuming
Solution Approach 1:
The system extracts only the essential charge curve characteristics from each battery cell that are necessary for matching purposes. By focusing on key parameters such as charge period and voltage profiles rather than analyzing every aspect of battery performance, the system achieves reliable cell grouping without excessive measurement or processing time
Solution Approach 2:
The selecting section transforms the measured charge curve data into comparable parameters and applies predetermined thresholds for similarity judgment. This parameter transformation and threshold-based selection method enables automated, rapid decision-making that balances selection accuracy with processing efficiency
3Object-affected harmful factors
If comprehensive charge curve measurement and selection is performed, then voltage imbalances and overcharging are prevented, but the device complexity and manufacturing cost increase
Solution Approach 1:
The battery assembling apparatus is divided into distinct functional sections: a charge curve measuring section for data acquisition, a selecting section for cell grouping based on similarity judgment, and a battery pack assembling section for physical assembly. This segmentation allows each component to perform its specific function with appropriate complexity, preventing unnecessary complexity from propagating throughout the entire system
Solution Approach 2:
The selecting section acts as an intermediary between the charge curve measuring section and the battery pack assembling section. It processes the measured charge curve data, applies similarity criteria, and outputs grouped cell selections, thereby shielding the rest of the system from the complexity of charge curve analysis while ensuring reliable cell matching
Data Source
AI summary
Provided is a battery assembling apparatus comprising a selecting section that selects as battery cells to be assembled into a battery pack, from among a plurality of battery cells, battery cells having similar charge curves that indicate a relationship between voltage and charge period, which is a time period necessary for a battery cell to be charged from a first voltage to a second voltage that is higher than the first voltage. As a result, the lifetimes of battery cells and of a battery pack assembled from a plurality of battery cells can be extended.