5results about How to "Avoid associativity" patented technology

The application relates to the secondary battery technical field, and discloses a manganese-based positive pole piece, a preparation method thereof, a secondary battery and an electric equipment. The positive pole piece comprises, in sequence from the thickness direction of the pole piece, a current collector, a manganese-based positive active material layer, an oxide layer and a phosphorus-containing oxygen acid covalent modification layer; the oxide layer and the phosphorus-containing oxygen acid covalent modification layer are connected through P-O bonds. The application proposes that the application constructs a stable multilayer interface modification structure by covalently combining the oxide layer and the phosphorus-containing oxygen acid covalent modification layer through sequentially stacking a multilayer structure, can cover the entire pole piece macroscopic interface, has strong binding force, can strengthen the adsorption capacity of manganese ions, block the interface side reaction chain, avoids the problems that the traditional particle-level coating is easy to break and fail, the binding force of the conventional protective film is weak and the distribution is uneven, and therefore can effectively inhibit the manganese ion elution and electrolyte decomposition, has the advantages of improving the battery capacity retention rate, the cycle stability and the thermal safety.

The utility model provides a contact device, a relay and electric equipment. Relates to the technical field of electronic devices. The contact device comprises a contact body, a contact piece and a connecting piece. The contact element is connected with an external circuit; one of the contact piece and the contact body is a copper piece, and the other one of the contact piece and the contact body is an aluminum piece; the connecting piece is arranged between the contact body and the contact piece. The contact body and the contact piece are connected into a whole through the connecting piece, so that the problems of corrosion of a primary battery and difficult combination caused by direct contact of the contact piece and the contact body are avoided, the conductivity between the contact piece and the contact body is ensured, the connection strength of the contact piece and the contact body is improved, the service life of the contact device is prolonged, and the service life of the contact device is prolonged. The connection resistance between the contact device and the busbar is reduced, and the use performance of the contact device is improved.

This invention relates to the field of plasma spraying, and more particularly to a method and apparatus for localized precision spraying in plasma spraying. The technical solution is as follows: For forming a coating on a target area of ​​a workpiece, it includes the following steps: Step 1: Enclosing and positioning. Based on the shape and size of the area to be sprayed on the workpiece, a surrounding ring with a matching inner diameter is selected. The surrounding ring is installed on a fixed ring, and the surrounding layer of the surrounding ring is tightly fitted to the workpiece surface so that the spraying space only covers the target area. This invention, through replaceable surrounding rings, can customize the enclosing of local areas of workpieces of different sizes and shapes, ensuring that the spraying operation only acts on the target area, avoiding waste of coating material and contamination of non-target areas of the substrate, achieving localized precision spraying. The heat-resistant ceramic surrounding layer and the ceramic ring form a thermal barrier during the spraying process.

The utility model provides a kind of high-precision positioning mechanism of aluminium alloy die-casting die with insert, belong to mould technical field.It includes lower mould plate, the lower mould plate is provided with two installation annular iron insert's forming cavity, the lower mould plate is provided with high-precision positioning assembly corresponding with annular iron insert, the lower mould plate is also equipped with wind-water cooling combined type cooling runner structure.High-precision positioning assembly can be accurately positioned annular iron insert by being set, improve insert installation precision, avoid die-casting size out-of-tolerance and combination bad;With wind-water cooling combined type cooling runner structure, the speed of expansion and contraction of aluminium iron can be comprehensively prevented insert skin aluminium shell fracture, guarantee product performance and reliability.

The invention discloses a nanometer eutectic precipitate reinforced nickel-based alloy coating and a preparation method of the nanometer eutectic precipitate reinforced nickel-based alloy coating, and belongs to the technical field of component design and structure regulation and control of laser cladding nickel-based alloy materials. A metallurgical environment beneficial to WC dissolution and carbon activation is constructed in a laser molten pool, so that WC does not exist in a final reinforced particle form any more, but participates in an in-situ reaction as a carbon source and a tungsten source, and fine and dispersed W5 (Si, B) 3 and Mo2C nano eutectic precipitates with good interface compatibility with a nickel-based matrix are synchronously generated; and therefore, active regulation and control on the size, distribution and interface structure of the carbide are realized from the aspect of a reinforced phase forming mechanism, and the problems of weak interface bonding and non-uniform structure caused by traditional additional ceramic particles are fundamentally avoided.