Airtightness detection device and airtightness detection method

The invention discloses an air tightness detection device and an air tightness detection method. The air tightness detection device provides special equipment for detecting the air tightness of a battery pack PACK upper cover, a workpiece sealing mold is arranged to form a sealable cavity with the battery pack PACK upper cover, and the position precision of the workpiece sealing mold is ensured through a positioning structure. An edge sealing mechanism and an anti-deformation mechanism are combined to guarantee the sealing performance and prevent the battery pack PACK upper cover from deforming during detection, so that reliable conditions are created for airtightness detection, airtightness detection of the battery pack PACK upper cover can be effectively carried out, and a basic guarantee is provided for improving the airtightness of the battery pack. 本发明揭示了气密检测装置及其气密检测方法，其中气密检测装置提供了一种电池包PACK上盖气密性检测的专用设备，其通过设置工件密封模具来与电池包PACK上盖形成可密闭腔体，并通过定位结构来保证工件密封模具的位置精度，结合边缘密封机构及防形变机构来保证密封性及防止电池包PACK上盖在检测时变形，从而为气密检测创造了可靠条