Pressure vessel capable of releasing pressure

A pressure vessel capable of releasing pressure, wherein the pressure vessel comprises a dome portion and a side wall portion connected with the dome portion, and a concave bottom in seaming connection with a bottom of the side wall portion;

• a pressure release port is provided at a top of the dome portion;
• the side wall portion is cylindrical;
• a lower edge of the side wall portion is tightly attached to an outer edge of the concave bottom, and they both are curled outward and hermetically connected;
• the concave bottom comprises a circular bottom surface in the center and an inclined connecting surface, and a pressure relief notch groove is provided on an outer side of the circular bottom surface;
• dimensions of the pressure vessel satisfy:
• k1=[2, 5], k2=[2, 4], k3=[0.5, 0.75], k4=[4, 20];
• k
• ⁢
• 1
• =
• a
• ⁢
• 1
• +
• a
• ⁢
• 2
• a
• ⁢
• 5
• ;
• k
• ⁢
• 2
• =
• a
• ⁢
• 4
• a
• ⁢
• 3
• ;
• k
• ⁢
• 3
• =
• a
• ⁢
• 7
• a
• ⁢
• 3
• ;
• k
• ⁢
• 4
• =
• (
• a
• ⁢
• 1
• +
• a
• ⁢
• 2
• )
• *
• a
• ⁢
• 5
• (
• a
• ⁢
• 3
• +
• a
• ⁢
• 4
• )
• *
• a
• ⁢
• 6
• ;
• the dome portion has a height of a1, and a value range of a1 is [5 mm, 40 mm];
• the side wall portion has a height of a2, and a value range of a2 is [50 mm, 300 mm];
• the circular bottom surface has a diameter of a3, and a value range of a3 is [3 mm, 60 mm];
• the inclined connecting surface has a maximum diameter of a4, and a value range of a4 is [30 mm, 125 mm];
• the side wall portion has a diameter of a5, and a value range of a5 is [35 mm, 130 mm];
• a distance between the circular bottom surface and a bottommost surface of the pressure vessel is a6, and a value range of a6 is [2 mm, 30 mm];
• the pressure relief notch groove has a total length of a7, and a value range of a7 is [1.5 mm, 45 mm];
• the side wall portion has a thickness of b1, and a value range of b1 is [0.18 mm, 0.38 mm];
• and
• the concave bottom has a thickness of b2, and a value range of b2 is [0.3 mm, 0.8 mm].