This utility model discloses an
aluminum electrolytic capacitor, relating to the technical field of aluminum electrolytic capacitors. It includes: a housing, with a core
package fixedly installed on the inner wall of the housing, a guide pin fixedly installed on the top of the core
package, and a top sealing plate sealed on the top of the housing; an
exhaust valve, including a housing, with a vent plate fixedly installed on the top of the housing, and a blocking plate slidably connected to the inner wall of the housing; and a buffer
assembly, installed between the inner wall of the housing and the outer wall of the core
package, the buffer
assembly including a sleeve, a sliding rod, and a damping block. This utility model effectively absorbs external vibration and
impact energy through the synergistic effect of the sleeve, sliding rod, spring, and damping block in the buffer
assembly, preventing damage to the internal structure of the core package due to external forces. Simultaneously, the automatic pressure relief and dustproof design of the
exhaust valve promptly discharges internal gas and prevents impurities from entering, maintaining
internal pressure and
environmental stability, significantly improving the
capacitor's service life and
operational stability.