Electrolytic capacitor and method for cooling same

#The invention relates to a method for cooling an electrolytic capacitor comprising a casing that surrounds a capacitive element.

#The invention also relates to an electrolytic capacitor comprising a casing that surrounds a capacitive element.

#With the increasing power density of electronic components, cooling has become more demanding. Increased power dissipation and high standards set by the environment of use have forced manufacturers in some cases to start using arrangements based on liquid cooling. One of the components creating problems in liquid cooling is the electrolytic capacitor.

#The invention will be described below in connection with preferred embodiments and with reference to the accompanying drawings, in which

#FIG. 1 shows a sectional view of an electrolytic capacitor provided with a cooling arrangement according to the invention,

#FIG. 2 shows a partly disassembled electrolytic capacitor provided with a cooling arrangement according to the invention, and

#FIG. 1 shows an electrolytic capacitor comprising a casing 1 enclosing a capacitive element 2.

#The casing 1 is provided with a hollow 3 comprising a cooling element 4 made of an electrically insulating material. The cooling element 4 is provided with at least one duct 5 for cooling medium (not shown in the figures), which is preferably a cooling liquid, such as water.

#The duct 5 is preferably provided with connectors 6 and 7 for connecting the duct 5 to pipes for cooling medium (not shown in the figures) or to a system for cooling medium (not shown in the figures).