| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for manufacturing a reliable battery for a short time which enables the highly accurate detection and rejection of defective products.SOLUTION: A method for manufacturing a nonaqueous electrolyte secondary battery comprises: a step (S10) of constructing a battery assembly; a conditioning step (S20) of performing a charging treatment on the battery assembly; a first inspection step (S30) of detecting an IV resistance by charging and discharging the battery assembly while raising the temperature of the assembly to a high-temperature region of 40°C or higher; a high-temperature aging step (S40) of holding the battery assembly in the high-temperature region; a second inspection step (S50) of detecting the IV resistance by charging and discharging the battery assembly after lowering the temperature of the battery assembly; and a step (S60) of making comparison between results of the first and a second inspection step to make determination on whether each battery assembly is defective or not, and removing a battery assembly determined to be defective.</p> |
