Patent ID: 8130487
Filing Date: 2012-03-06
Classification: H01G,Y02T

Abstract:
1. A capacitor comprising: a capacitor element having a first end surface and a second end surface opposite to each other, the capacitor element including a first electrode provided at the first end surface and a second electrode provided at the second end surface; an electrolyte solution; a first collector plate made of metal and joined to the first electrode of the capacitor element; a second collector plate made of metal and joined to the second electrode of the capacitor element; a case made of metal accommodating the capacitor element, the electrolyte solution, the first collector plate, and the second collector plate, the case having a tubular portion having an opening and a bottom plate closing the tubular portion; a terminal plate placed at the opening of the case and joined to the second collector plate; and a sealing rubber sealing the terminal plate and the opening of the case, wherein an inner surface of the bottom plate of the case has a first contacting portion contacting the first collector plate and a first junction portion facing the first collector plate, and the first junction portion of the inner surface of the bottom plate has a first joining point joined to the first collector plate and a first separation part facing the first collector plate around the first joining point by a first gap between the first junction portion and the first collector plate, the first collector plate being located away from the first contacting portion.