Abstract: The present disclosure discloses a pressure detection assembly and an ultrasonic welding device, the pressure detection assembly includes a first connecting piece, a second connecting piece, a detection unit and an elastic member, wherein the first connecting piece is provided with a first guide portion; the second connecting piece is connected to the first connecting piece, and the second connecting piece is provided with a second guide portion matched with the first guide portion; the detection unit is provided between the first connecting piece and the second connecting piece, and the detection unit is configured to collect the pressure value between the first connecting piece and the second connecting piece; and the elastic member is connected between the first connecting piece and the second connecting piece, wherein the elastic member can make the first connecting piece and the second connecting piece clamp the detection unit.

Abstract: The present disclosure discloses a pressure detection assembly and an ultrasonic welding device, the pressure detection assembly includes a first connecting piece, a second connecting piece, a detection unit and an elastic member, wherein the first connecting piece is provided with a first guide portion; the second connecting piece is connected to the first connecting piece, and the second connecting piece is provided with a second guide portion matched with the first guide portion; the detection unit is provided between the first connecting piece and the second connecting piece, and the detection unit is configured to collect the pressure value between the first connecting piece and the second connecting piece; and the elastic member is connected between the first connecting piece and the second connecting piece, wherein the elastic member can make the first connecting piece and the second connecting piece clamp the detection unit.

Abstract: A detection method based on a battery defect detection system, a system and a storage medium are disclosed. The detection method includes: acquiring a scanning trigger signal, and controlling an ultrasonic transceiver and a motion control platform to work, so that the ultrasonic transceiver receives waveform data of ultrasonic waves passing through a cell; controlling an oscilloscope to collect the waveform data; receiving the waveform data and performing imaging processing to obtain an imaging diagram; and detecting whether or not the cell has a defect according to the imaging diagram.

Abstract: A welding quality detection system and an ultrasonic welding device, and a welding quality detection method are disclosed. The welding quality detection system includes a detection module, a control module and a display module. The detection module is configured for collecting a transverse friction force and a longitudinal welding pressure of a welded workpiece. The control module is electrically connected with the detection module, and the control module is configured for receiving, analyzing and processing a transverse friction force signal and a longitudinal welding pressure signal of the detection module. The display module is electrically connected with the control module, and the display module is configured for displaying analysis results of the control module. According to the application, a welding quality of the welded workpiece can be effectively detected, and a welding defect can be found in real time.