Capacitor unit for a power converter and method for manufacturing a capacitor unit
AssigneeZF Friedrichshafen AG
InventorsJonas Zeller, Michael Kohr, Pengshuai Wang
Life of this patent
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Abstract
A capacitor unit for a power converter, wherein the capacitor unit has a first busbar and a second busbar, and at least one capacitor element placed in between the first busbar and the second busbar, wherein the capacitor element is electrically connected to the first busbar at a first side, and wherein the capacitor element is electrically connected to the second busbar at a second side, lying opposite the first side, and a cooling device, wherein the cooling device is thermally coupled to the first busbar with a surface area contact, wherein the cooling device is designed to remove heat from the first busbar.
Claims20
A capacitor unit for a power converter, comprising:
- a first busbar;
- a second busbar;
- at least one capacitor element located between the first busbar and the second busbar, wherein the at least one capacitor element is electrically connected at a first side to the first busbar, and wherein the at least one capacitor element is electrically connected at a second side, opposite the first side, to the second busbar;
- and
- a cooling device thermally coupled to the first busbar over with a surface area contact, wherein the cooling device is configured to remove heat from the first busbar,
- wherein free ends of the first and second busbars in an edge region end in a hole of a housing of the capacitor unit, and
- wherein the hole is configured to allow a fixative to be injected into the housing.
A method for producing a capacitor unit, the method comprises:
- providing a first busbar and a second busbar, at least one capacitor element, and a cooling device;
- placing the at least one capacitor element between the first busbar and the second busbar, wherein the at least one capacitor element is electrically connected to the first busbar at its first side, and wherein the at least one capacitor element is electrically connected to the second busbar at its second side, lying opposite its first side, and placing the cooling device such that it is in surface area/planar contact with the first busbar to remove heat from the first busbar;
- providing a housing configured to encase at least a part of the first and second busbars, the at least one capacitor element, and the cooling device, wherein the housing includes a hole configured to allow a fixative to be injected into the housing;
- placing free ends of the first and second busbars in an edge region in the hole of the housing;
- and
- securing the first busbar, the second busbar, the at least one capacitor element, and the cooling device with the fixative to produce the capacitor unit.
Dependencies are inferred from the claim text.