Pressure relief valve

A pressure relief valve configured to, upon a rise in an internal pressure of a fluid inside an enclosure, allow the fluid to escape from an opening of the enclosure, the pressure relief valve comprising:

• a base part fixed to a surface of the enclosure so as to partially overlap the opening of the enclosure;
• a valve member including a roof capable of covering the opening, the valve member being movable to open the opening;
• a filled member positioned between the base part and the valve member, the filled member being filled with a fire extinguishing agent;
• and
• a starting point member configured to release the fire extinguishing agent from the filled member, wherein
• the valve member is configured to be in a closed position when the internal pressure of the fluid is below a threshold, and the valve member is configured to be in an open position when the internal pressure of the fluid exceeds the threshold,
• the valve member is configured to close the opening when the valve member is in the closed position,
• the valve member is configured to open the opening when the valve member is in the open position, and
• the starting point member is configured to release the fire extinguishing agent from the filled member when the valve member moves from the open position to the closed position.