2results about How to "Increase the welding surface" patented technology

This invention discloses a lead-out terminal structure and a secondary battery, belonging to the field of secondary battery technology. It aims to solve the problems of complex manufacturing processes, poor welding reliability, insufficient sealing, uneven stress, and high internal resistance in existing secondary batteries. The lead-out terminal structure includes a battery casing and a lead-out terminal assembly disposed on its lead-out holes. The lead-out terminal assembly consists of an upper electrode post, a lower electrode post, an upper sealing gasket, a lower sealing gasket, and a positive current collector. The upper electrode post has a concave center forming a recessed portion, with a welding hole at the bottom of the recessed portion. The lower electrode post is a circular plate, fixedly connected to the bottom of the recessed portion. The upper and lower sealing gaskets are respectively disposed on the inner and outer sides of the battery casing, and are pressed together by matching sealing bevels to form a continuous sealing surface. The upper surface of the positive current collector has a protrusion and is welded to the lower electrode post. This invention simplifies the manufacturing process, reduces costs, improves welding stability, sealing, and stress uniformity. Even if defects such as weld spatter occur during the welding process, it does not affect the battery's sealing performance, reduces the battery's internal resistance, and is suitable for various types of secondary batteries.

The utility model relates to a tool magazine assembly for micro tiller, including sword axle, tool magazine, sword axle is the prism structure and the welding joint of tool magazine is triangular edge surface, the front surface of tool magazine is equipped with an installation hole for with the installation of tool, simultaneously the outer end edge of tool magazine has thickened edge and makes the tool magazine structure more durable, the utility model reaches the beneficial effect is: tool magazine and sword axle connection positioning are more accurate and stable, and thickened edge makes the overall structure more durable.