Sheet detection mechanism, detection device and detection method
A detection mechanism and detection device technology, applied in the direction of measurement device, mechanical device, mechanical measurement device, etc., can solve the problems of low precision, increase of defective cell rate, difficult to achieve detection result accuracy, etc., to achieve easy detection and detection. Good effect, simple structure of detection mechanism and detection device
Pending Publication Date: 2021-03-19
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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Problems solved by technology
In the process of manufacturing lithium batteries, when manufacturing or slitting pole pieces and diaphragms, pole pieces and diaphragms are prone to wavy defects. The resulting deviation has a great impact on the quality of the battery core, and it is easy to cause the winding core to wrinkle and the defect rate of the battery core to increase. Therefore, it is necessary to perform wave-shaped defect detection on the pole piece and diaphragm
[0003] At present, the detection method of wavy defects of pole piece and diaphragm is generally manual detection. The manual detection method is greatly affected by the subjective influence of the test personnel, the accuracy is not high, and the stable tensile tension cannot be guaranteed. The accuracy of the detection results is difficult to reach the actual production. control requirements
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[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...
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The invention belongs to the technical field of batteries, and discloses a sheet detection mechanism, a sheet detection device and a sheet detection method. The The sheet detection mechanism comprisesa detection frame, and a waveform detection module which comprises a first optical signal transmitting end and a first optical signal receiving end, the first optical signal transmitting end and thefirst optical signal receiving end are both fixed to the detection frame, the first optical signal transmitting end and the first optical signal receiving end are oppositely arranged and located on the same horizontal plane, and the first optical signal transmitting end and the first optical signal receiving end are located on the two sides of a to-be-detected sheet in the width direction respectively. The sheet detection mechanism provided by the invention not only can accurately measure the wavy defects of the two side edges of the sheet to be detected in the width direction, but also can accurately measure the wavy defects of the central area of the sheet to be detected, the detection effect is good, the detection mechanism and the detection device are simple in structure, and the detection is easy to operate.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to a sheet detection mechanism, detection device and detection method. Background technique [0002] Due to the advantages of high energy storage, light weight, and long service life, lithium batteries are used more and more widely. General lithium batteries use the positive and negative pole pieces and the diaphragm isolated therein to obtain the cell after winding, so the quality of the pole piece and diaphragm will directly affect the performance and safety performance of the lithium battery. In the process of manufacturing lithium batteries, when manufacturing or slitting pole pieces and diaphragms, pole pieces and diaphragms are prone to wavy defects. The resulting deviation has a great impact on the quality of the battery core, and it is easy to cause the winding core to wrinkle and the defect rate of the battery core to increase. Therefore, it is necessary to perform wave-...
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IPC IPC(8): G01B11/30G01B5/00
CPCG01B5/0002G01B5/0004G01B11/303
Inventor 黄明张章明张波陈德军
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD