Battery inspection techniques can identify process failures before defective cells leave the factory and provide a snapshot into manufacturing performance. In short, better inspection has a critical role to play in solving the battery quality challenge. A key consideration in inspection for battery quality control is which techniques to use.
Goal is the definition of standards for battery production regardless of cell format, production processes and technology. A well-structured procedure is suggested for early process stages and, additionally, offering the possibility for process control and feedback. Based on a definition of int ernal and external
Table I. Key features of cell-level battery quality inspection techniques. Spatial resolution on the order of 10–100 μm is important for detecting many critical battery defects, such as anode-cathode overhang and metallic particle contaminants (see Figure 3).
Battery quality is among the most difficult issues facing the industry today due to the complexity of both battery failure and gigawatt-hour-scale battery production. Yet the human, environmental, financial, and reputational stakes are enormous. The challenge of battery quality deserves much more academic, industrial, and regulatory focus.
This inline and offline inspection solution performs a complete 360° inspection of the cell to ensure 100% inspection and the delivery of only flawless cells. In addition to dimensional inspection, the cell inspection also detects surface defects and contamination. The system can also reliably check barcodes and data codes.
While battery quality control is a multifaceted problem worthy of its own article, a key element is inspection. Battery inspection techniques can identify process failures before defective cells leave the factory and provide a snapshot into manufacturing performance.
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