3results about How to "Guaranteed wall thickness" patented technology

This utility model discloses a funnel-shaped flow-dividing extrusion die, including an upper die and a lower die. The upper die has adjacent small and large die cores on the discharge side. Multiple through-flow holes are provided on the upper die, including a funnel-shaped hole. The inlet size of the funnel-shaped hole is larger than the outlet size. The outlet of the funnel-shaped hole is offset towards the side closer to the small die core, relative to the center of its inlet area. The outlet of the funnel-shaped hole is located between the small and large die cores, and its area partially overlaps with the large die core, while the small die core is outside its outlet area. This utility model uses a funnel-shaped flow-dividing hole between the die cores, with a large inlet and a small outlet, thereby reducing the flow velocity in the middle while ensuring material intake, reducing the pressure on the small die core, protecting it from swaying, and ensuring the profile wall thickness meets requirements.

The utility model discloses a kind of heat shrink tube for energy storage field, including pipe body and its corrugated main pipe wall.The main pipe wall is formed by the first, second surface of interval arrangement, forms the alternate distribution of wave crest and wave trough.The setting of wave crest in convex, wave trough in concave, cooperate parallel and mirror image symmetry surface arrangement, both ensure that stress uniformity, and significantly improve bending resistance.Innovative double-layer winding structure (inner tube+outer tube) can realize at least five kinds of functional state: completely coincident state provides maximum mechanical strength;Completely separated state forms high-efficiency heat insulation cavity;Partially superimposed state realizes the balance of strength and flexibility;Specific overlapping state optimizes stress distribution.The design is innovated through structure, while maintaining wall thickness, so that product has excellent mechanical properties, heat insulation effect and working condition adaptability, especially suitable for the reliability requirement strict energy storage application scene.

The application discloses an electric core shell and an electric core, and is used for solving the problem that the welding seam between the explosion-proof valves of the existing electric core shell is prone to cracking. The electric core shell comprises a first side wall, a second side wall and an explosion-proof valve. The first side wall and the second side wall are connected and surrounded to form a containing cavity for containing the electric core. The wall thickness of the first side wall is smaller than the wall thickness of the second side wall. The second side wall is provided with a mounting groove penetrating through the second side wall. The explosion-proof valve is arranged in the mounting groove. Therefore, the overall wall thickness of the shell is ensured without affecting the energy density of the electric core. The welding strength between the explosion-proof valve and the shell is improved. The welding seam between the explosion-proof valve and the shell caused by the too small wall thickness of the shell can be effectively avoided.