4results about How to "Small coverage" patented technology

This utility model discloses a battery pack, comprising a first mounting plate, a second mounting plate, and a bend. Welding holes are provided on the first and second mounting plates. These welding holes are not through holes, and the diameter of the circular hole on the near end face is smaller than the diameter on the far end face. An inner cavity is provided inside the welding hole, and the inner wall of the welding hole has an inclination angle of 50° to 70°. A protective flange that mates with the welding hole is provided near the near end face of the welding hole, and the upper end face of the protective flange is slightly higher than the horizontal plane of the first and second mounting plates. Compared with the prior art, the beneficial effect of this utility model is that it provides a countersunk hole molten pool structure at the welding point on the battery pack. During battery assembly welding, this structure can block a certain amount of molten metal splashing, reduce the coverage area of ​​the splashed metal, and provide some containment for the molten metal, reducing the possibility of splashed metal getting stuck between the battery cells and puncturing the insulation.

The utility model discloses an anti-explosion energy-saving rapid assembly type battery workshop which comprises a connecting cabin provided with a connecting port and a functional cabin provided with a butt joint port. The butt joint port and the connecting port form a fire insulation channel, the functional cabins are used for placing battery production equipment or power supply equipment or environment control equipment, and the connecting cabins are used for communicating the multiple functional cabins. Through the structural design, the connecting cabin and the functional cabin are directly assembled for use and can be disassembled on site after a project is finished. And due to the design of the functional cabin, the occupied area is reduced, the coverage range of the environment control equipment is also reduced, and the energy consumption is further reduced. The distance between a fire source in the functional cabins and the connecting cabins can be increased through the fire insulation channels, so that spreading of open fire is effectively delayed, the functional cabins and the connecting cabins can be controlled separately through the fireproof doors, and when a fire disaster occurs, the disaster situation is controlled in a certain independent cabin, so that spreading of the fire behavior is delayed.

This invention discloses a high-precision bandgap reference circuit, belonging to the field of analog integrated circuit design technology. The BGR circuit includes a power supply voltage input terminal AVDD, a ground terminal GND, PMOS transistors P1-P22, NMOS transistors N1-N14, and bipolar junction pnp transistors Q1-Q4. In this BGR circuit, the sources of PMOS transistors P1, P2, P3, P4, and P5 are connected to the power supply voltage input terminal AVDD. This invention can solve the problems of output voltage deviation and temperature coefficient deterioration caused by device mismatch in traditional bandgap reference structures, and further reduces the temperature coefficient of the bandgap reference output voltage and improves its accuracy by employing second-order curvature calibration technology. This significantly reduces the coverage area required for first-order compensation, improves the accuracy of the bandgap reference output voltage, and improves the temperature coefficient.

The application discloses a support head cover special for intervention, and relates to the field of medical instruments, which comprises a base for supporting the head of a patient, a side plate vertically fixed on the base, a lifting plate slidingly arranged on the side plate towards the base or away from the base, and a cover plate rotatably arranged on the side of the lifting plate away from the base. The support head cover special for intervention can adapt to various conditions of non-transcervical puncture surgery and transcervical puncture surgery by lifting the lifting plate and rotating the cover plate, thereby improving the universality.