A battery distribution unit includes a housing having a bottom mounted to a battery case of a battery module and having a component cavity with a contactor therein. The contactor has fixed contacts having terminating ends extending from a bottom end of a contactor housing. The BDU includes terminals at the bottom end of the contactor coupled to the terminating ends and a heat exchanger cap at the bottom end of the contactor. The heat exchanger cap is provided in the component cavity in thermal communication with the fixed contacts and in thermal communication with the battery case of the battery module to dissipate heat from the fixed contacts into the battery case of the battery module.

Electromechanical relay constructions comprise an external housing, a pair of switchable electrical contacts disposed within the housing, an element for activating the pair of electrical contacts, and a temperature sensing element disposed within the housing adjacent the electrical contracts. The temperature sensing element provides a signal for determining the temperature within the relay housing. The relay may comprise two or more temperature sensing elements disposed within the housing a desired distance from one another. The temperature sensing element may be attached to a member or substrate disposed within the housing, may be attached to an existing internal structure of the housing, or may be attached to one of the contacts. The temperature sensing element may be selected from the group consisting of resistance temperature detectors, negative temperature coefficient thermistors, thermopile sensors, thermocouples, and combinations thereof.

According to one embodiment, an electrical contact assembly is disclosed. The assembly includes a layer of a conducting metal, a layer of copper adjacent to the layer of conducting metal, and a face layer comprising silver graphite adjacent to the layer of copper.

According to one embodiment, an electrical contact assembly is disclosed. The assembly includes a layer of a conducting metal, a layer of copper adjacent to the layer of conducting metal, and a face layer comprising silver graphite adjacent to the layer of copper.

Provided is a terminal of a relay, by which defective sealing in the relay can be prevented. A movable terminal of the relay has: a first plate including a first inner surface, a first outer surface opposed to the first inner surface, and a first through opening which opens to the first inner surface and the first outer surface; a second plate including a second inner surface, a second outer surface opposed to the second inner surface, and a second through opening which opens to the second inner surface and the second outer surface; and a folded part which connects the first plate to the second plate. The first through opening is partially overlapped with the second through opening, and the second inner surface is partially exposed to the first through opening.

Provided is a terminal of a relay, by which defective sealing in the relay can be prevented. A movable terminal of the relay has: a first plate including a first inner surface, a first outer surface opposed to the first inner surface, and a first through opening which opens to the first inner surface and the first outer surface; a second plate including a second inner surface, a second outer surface opposed to the second inner surface, and a second through opening which opens to the second inner surface and the second outer surface; and a folded part which connects the first plate to the second plate. The first through opening is partially overlapped with the second through opening, and the second inner surface is partially exposed to the first through opening.

A device for protecting an inverter include a first power switch configured to be turned on when a first voltage signal from a first switch of a safety relay is applied thereto; a second power switch connected in series with the first power switch, wherein the second power switch is configured to be turned on when a second voltage signal from a second switch of a safety relay is applied thereto; and a power line for connecting the first power switch and the second power switch to each other in series and for connecting the series of the first power switch and the second power switch to a buffer of the inverter, wherein a third voltage signal is applied via the power line to the buffer.

A device for protecting an inverter include a first power switch configured to be turned on when a first voltage signal from a first switch of a safety relay is applied thereto; a second power switch connected in series with the first power switch, wherein the second power switch is configured to be turned on when a second voltage signal from a second switch of a safety relay is applied thereto; and a power line for connecting the first power switch and the second power switch to each other in series and for connecting the series of the first power switch and the second power switch to a buffer of the inverter, wherein a third voltage signal is applied via the power line to the buffer.

A switching device including: a body which has a first side wall and a first end wall, the first side wall being perpendicular in relation to a longitudinal direction, and the first end wall is substantially perpendicular to the first side wall; and a first fixed contact comprising an inner section and an outer section, the inner section having a thickness dimension, the outer section protrudes from the first side wall in the longitudinal direction. The first fixed contact includes a test terminal which is integral to the inner section and protrudes from the inner section in a lateral direction, which is perpendicular to the longitudinal direction and an end wall plane defined by the first end wall, the test terminal having a substantially planar test terminal surface, and the test terminal has a thickness dimension which is parallel to the thickness dimension of the inner section, the thickness dimension of the test terminal is substantially smaller than the thickness dimension of the inner section, the test terminal is accessible from outside the body from the direction of the first end wall, and the test terminal is adapted to be connected to a female connector.

A switching device including: a body which has a first side wall and a first end wall, the first side wall being perpendicular in relation to a longitudinal direction, and the first end wall is substantially perpendicular to the first side wall; and a first fixed contact comprising an inner section and an outer section, the inner section having a thickness dimension, the outer section protrudes from the first side wall in the longitudinal direction. The first fixed contact includes a test terminal which is integral to the inner section and protrudes from the inner section in a lateral direction, which is perpendicular to the longitudinal direction and an end wall plane defined by the first end wall, the test terminal having a substantially planar test terminal surface, and the test terminal has a thickness dimension which is parallel to the thickness dimension of the inner section, the thickness dimension of the test terminal is substantially smaller than the thickness dimension of the inner section, the test terminal is accessible from outside the body from the direction of the first end wall, and the test terminal is adapted to be connected to a female connector.