This disclosure is directed to power systems for transferring power between electrical components. An exemplary power system includes a first electrical component (e.g., an electric motor), a second electrical component (e.g., an inverter system), and a terminal block assembly adapted to electrically couple the first and second electrical components. The terminal block assembly includes an internal cooling channel configured to receive coolant for providing direct liquid cooling of the bus bar.

A bus bar including a bar-shaped conductor for electrically connecting battery modules or electric parts to each other, the bus bar having a three-dimensional lattice structure to allow air ventilation and including a plurality of ventilation holes provided in a body of the bus bar. In detail, the body of the bus bar may be provided in a bar shape having a predetermined length, thickness, and width, and the plurality of ventilation holes may be provided in an upper surface, lower surface, left side surface, right side surface, front surface, and back surface of the body and provided to communicate with each other through an inner portion of the body.

A multiplayer neutral bus that includes a plurality of conductive layers and a plurality of bushings is provided. At least a portion of the conductive layers are spaced apart from each other and form separate electrical flow paths. The conductive layers and bushings are arranged so that each bushing is electrically coupled to each of the other bushings. A method of installing the neutral bus is provided.

A first busbar includes a first electrical connection portion that is electrically connected to a main relay, a first heat transfer connection portion that is thermally connected to the insulating plate, and a first detour portion that connects the first electrical connection portion and the first heat transfer connection portion to each other. A second busbar includes a second electrical connection portion that is electrically connected to the main relay , a second heat transfer connection portion that is thermally connected to the insulating plate, and a lateral detour portion and a lower detour portion that connect the second electrical connection portion and the second heat transfer connection portion to each other.

A first busbar includes a first electrical connection portion that is electrically connected to a main relay, a first heat transfer connection portion that is thermally connected to the insulating plate, and a first detour portion that connects the first electrical connection portion and the first heat transfer connection portion to each other. A second busbar includes a second electrical connection portion that is electrically connected to the main relay , a second heat transfer connection portion that is thermally connected to the insulating plate, and a lateral detour portion and a lower detour portion that connect the second electrical connection portion and the second heat transfer connection portion to each other.

A power distribution unit includes a fuse, a relay, a busbar, and a heat dissipation bolt. The fuse and the relay each have one terminal. The busbar is located between the fuse and the relay and connects to the two terminals. The heat dissipation bolt connects the busbar to a housing of the power distribution unit and includes two threaded bolts, one going through the busbar and the other going through the housing.

A power distribution unit includes a fuse, a relay, a busbar, and a heat dissipation bolt. The fuse and the relay each have one terminal. The busbar is located between the fuse and the relay and connects to the two terminals. The heat dissipation bolt connects the busbar to a housing of the power distribution unit and includes two threaded bolts, one going through the busbar and the other going through the housing.

Design and packaging of wide bandgap (WBG) power electronic power stages are disclosed herein. An example apparatus includes a first printed circuit board (PCB) including: a first voltage phase circuit cluster; a second voltage phase circuit cluster; and a cluster of traces, the cluster of traces routed substantially perpendicular to the second voltage phase circuit cluster; a second PCB positioned below the first PCB; and a connector to connect the first PCB to the second PCB, the connector electrically coupled to the first voltage phase circuit cluster by the cluster of traces.

Design and packaging of wide bandgap (WBG) power electronic power stages are disclosed herein. An example apparatus includes a first printed circuit board (PCB) including: a first voltage phase circuit cluster; a second voltage phase circuit cluster; and a cluster of traces, the cluster of traces routed substantially perpendicular to the second voltage phase circuit cluster; a second PCB positioned below the first PCB; and a connector to connect the first PCB to the second PCB, the connector electrically coupled to the first voltage phase circuit cluster by the cluster of traces.

A contact system includes a support body, a heat sink configured to contact the support body in an electrically insulated and/or heat-conducting manner, and an electrically insulating layer arranged between the heat sink and the support body. The heat sink has a first surface which is embodied substantially as a flat area and formed with a recess in a region intended for contacting a periphery of a contact area of the support body. The recess forms an unbroken track on the first surface of the heat sink. The contact area of the support body is located on the heat sink in such a way that the recess extends completely along the periphery of the contact area. The insulating layer between the heat sink and the support body is configured to cover the recess in such a way that a dosed channel is formed by the recess and the insulating layer.