7results 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 present invention discloses a welding machine head for welding the inner ring of a steel cage and main bars, comprising a machine head body, a main bar fixing device, an inner ring position detection mechanism and a welding gun chuck arranged on the machine head body, the main bar fixing device is used to fix the main bars, the inner ring position detection mechanism is used to detect the position of the welding point between the inner ring of a steel cage skeleton and the main bars, and the welding gun chuck is used to install the welding gun. The welding machine head can automatically take and press the main bars to realize automatic welding, with stable welding points, high welding quality and high production efficiency; the inner ring position detection mechanism can automatically detect the contact position between the inner ring and the main bars, thereby reducing the labor intensity of workers and performing welding quickly and accurately.

The utility model discloses a cover plate assembly which comprises a cover plate, a sealing piece and a solder piece, the cover plate is provided with a liquid injection hole and a containing groove, and the containing groove surrounds the liquid injection hole; the sealing piece is contained in the containing groove and seals the liquid injection hole, and at least one of the side wall of the containing groove and the peripheral wall, opposite to the side wall of the containing groove, of the sealing piece is provided with a containing groove; the solder piece is contained in the containing groove and connected to the cover plate and the sealing piece so as to be connected to the sealing piece and the cover plate in a sealed mode. The utility model further discloses a battery cell provided with the cover plate assembly, a battery and electric equipment.

The utility model discloses a board-to-board connector. The board-to-board connector comprises a male seat connector and a female seat connector. The male seat connector comprises a male insulation base, a male seat conductive terminal and a male seat protection shell. The female seat connector comprises a female insulation base, a female seat conductive terminal and a female seat protection shell. According to the utility model, a plurality of buckling points are designed at the contact parts of the male seat connector and the female seat connector, so that the plugging stability and the electrical connection reliability are enhanced; the welding strength of the male socket protection shell is enhanced by arranging a reinforcing welding leg which horizontally extends towards the outer side of the end wall of the short edge at the lower end of the covering part of the inner side surface of the end wall of the male socket protection shell; in addition, the male seat protection shell and the male seat power supply terminal are integrally formed, and the female seat protection shell adopts a full-wrapping protection structure design and is integrally formed with the cap part of the middle island structure, so that the assembly process is greatly simplified, the manufacturing cost is reduced, and the durability and the electromagnetic shielding performance of the connector are improved.

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.

The present invention discloses a dissimilar welding method of duplex steel and alloy steel, relates to the technical field of dissimilar steel welding, and aims to solve the technical problem that dissimilar welding of duplex steel and alloy steel is difficult, including using a steel pipe slotting machine to open an outer ring groove at the end of the duplex steel pipe to be welded, and an inner ring groove at the end of the alloy steel pipe to be welded, so that the bidirectional steel pipe and the alloy steel pipe form a plug-in structure, and the axial length of the outer ring groove is greater than the axial length of the inner ring groove; the end of the duplex steel pipe to be welded is plugged in with the end of the alloy steel pipe to be welded, so that the outer ring groove and the outer side of the end of the alloy steel pipe to be welded form a weld, and welding is performed at the weld. The present invention provides support by plugging the end of the duplex steel pipe to be welded with the end of the alloy steel pipe to be welded, reduces the probability of weld cracking, and the outer ring groove and the outer side of the end of the alloy steel pipe to be welded form a weld to facilitate welding, reduce the difficulty of welding primer, and solve the technical problem that dissimilar welding of duplex steel and alloy steel is difficult.

The utility model provides a surface-mounted common-mode inductor shell and a surface-mounted common-mode inductor, the surface-mounted common-mode inductor shell comprises a groove body and surface-mounted pins, the groove body comprises a frame and a bottom wall, the frame surrounds the bottom wall, the surface-mounted pins are arranged on the outer wall surface of the frame, in the height direction of the frame, the bottom surfaces of the surface-mounted pins are lower than the bottom surface of the bottom wall, and the bottom surface of the surface-mounted pins is lower than the bottom surface of the bottom wall. Or the bottom surfaces of the patch pins are flush with the bottom surface of the bottom wall; the chip pins can serve as bonding pads, in the tin soldering process of workers, gaps exist between the bottom wall and the electric device to be welded, welding rods can extend to the positions of the four chip pins through the bottom wall and the electric device to be welded, accurate alignment is not needed, the operable space is large, the welding face is large, welding is firmer, the production efficiency of the inductor is effectively improved, and the manufacturing cost of the inductor is reduced.