Quality Inspection Device and Method of Pouch Type Secondary Battery Cells

• Main Authors: PARK JEONG HAK, OH SAE DON
• Format: Patent
• Language: English; Korean
• Published: 29.11.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TESTING

The present invention relates to a quality inspection device and method of pouch-type secondary battery cells, the object of which is to inspect the quality of an electrode plate, a bent portion, a welded part, or the like of pouch-type secondary battery cells. An AC signal-generating part generates an AC signal, and a magnetic field-generating part generates a magnetic field according to the generated AC signal to allow an induced current to flow through a pouch-type secondary battery cell. One or more induced current detection sensors each detect a signal of an induced current flowing into the pouch-type secondary battery cell. The detected signal of the induced current is compared with a value of a judgment range previously stored in a control/determination part, and the quality of the pouch-type secondary battery cell is judged. 본 발명은 파우치형 이차전지 셀의 극판이나 절곡부위 또는 용접부 등의 품질을 검사하는 것으로서 교류신호 발생부가 교류신호를 발생하고, 발생한 교류신호에 따라 자기장 발생수단이 자기장을 발생하여 파우치형 이차전지 셀로 유도전류가 흐르게 하며, 파우치형 이차전지 셀로 흐르는 유도전류의 신호를 하나 이상의 유도전류 검출센서가 각기 검출하고, 검출한 유도전류의 신호를 제어/판단부가 미리 저장되어 있는 판정범위의 값과 비교하고 파우치형 이차전지 셀의 품질을 판단하는 파우치형 이차전지 셀의 품질 검사장치 및 방법에 관한 것이다.