A power relay assembly is provided. A power relay assembly according to an exemplary embodiment of the present invention comprises: a support plate having at least one electric element mounted on one surface thereof and including a plastic material having heat dissipation and insulation properties; and at least one bus bar electrically connected to the electric element and partially embedded in the support plate. Due to these features, since heat generated from the bus bar and the electric element is dissipated to the outside through the support plate, it is possible to prevent performance deterioration due to heat and breakage of electronic components.

An electrical assembly may include a contactor, a bus bar connected to the contactor, a bracket connected to the bus bar, and/or a cooling member. The cooling member may be connected to the bracket such that the contactor is indirectly connected to the cooling member via the bus bar and the bracket. A method of assembling an electrical assembly may include providing a bracket and one or more contactors, inserting the one or more contactors into the bracket, disposing a flexible circuit at least partially on and/or in the bracket, electrically connecting the flexible circuit with the one or more contactors, connecting a bus bar assembly with the one or more contactors, connecting the bus bar assembly with the bracket, disposing a cooling member on or about the bracket, and/or connecting the cooling member with the bracket.

The disclosure relates to a relay, a battery distribution box and a battery pack. The relay includes a relay body and a buffer assembly. The relay body includes a housing and a stationary contact, a movable contact and a coil assembly located inside the housing. The coil assembly is abler to drive the movable contact to move toward or away from the stationary contact to make the movable contact to contact or disconnect from the stationary contact. The housing is fixed through the base, the buffer assembly is mounted on the base, and/or is mounted on the outside of the housing, and configured to buffer the force generated by the action of the movable contact.

An electrical assembly may include a contactor, a bus bar connected to the contactor, a bracket connected to the bus bar, and/or a cooling member. The cooling member may be connected to the bracket such that the contactor is indirectly connected to the cooling member via the bus bar and the bracket. A method of assembling an electrical assembly may include providing a bracket and one or more contactors, inserting the one or more contactors into the bracket, disposing a flexible circuit at least partially on and/or in the bracket, electrically connecting the flexible circuit with the one or more contactors, connecting a bus bar assembly with the one or more contactors, connecting the bus bar assembly with the bracket, disposing a cooling member on or about the bracket, and/or connecting the cooling member with the bracket.

A system may be configured to replace a manual service disconnect (MSD). Some embodiments may: provide a set of batteries that include an MSD; remove the MSD; and install a contactor at the MSD. The replacement may be performed via substantially similar housing previously used by the MSD.

Provided is a power relay assembly. The power relay assembly comprises: a support plate having at least one electrical element mounted on one surface thereof and including a plastic material having a heat dissipation property and insulation property; at least one bus bar electrically connected to the electrical element; and an electromagnetic wave shielding unit for shielding electromagnetic waves generated from the electrical element.

A relay includes a fixed contact, a movable contact, a return member of the movable contact, and a case that covers the fixed contact, the movable contact, and the return member. The case is made of a material having transparency or translucency. The relay RS further includes a tray portion that is disposed above the return member and below the fixed contact and holds a fusing residue generated by separation/approach of the movable contact from/to the fixed contact. The relay further includes a cap that covers a portion of a terminal connected to the fixed contact, the portion being exposed from the case. When the cap is attached to the case, at least a portion of the case is exposed without being covered with the cap.

A power relay assembly is provided. A power relay assembly according to an exemplary embodiment of the present invention comprises: an upper case having at least one electric element mounted on one surface thereof; a lower case coupled to the upper case; and at least one bus bar electrically connected to the electric element, disposed between the upper case and the lower case, and including a bottom portion that is in surface contact with at least one of the upper case and the lower case, wherein at least one side of the bottom portion contacts a portion made of a plastic material having heat dissipation and insulation properties in the upper case and the lower case.

A relay holding structure has a relay, a first holding portion, a case, a second holding portion, a cover and an elastic member. The first holding portion and the second holding portion are formed of compressible resin foam. The first holding portion abuts against a first surface of the relay. The case supports the relay through the first holding portion. The second holding portion abuts against a second surface of the relay. The cover sandwiches the relay between it and the case through the first holding portion and the second holding portion. The elastic member engages the case and the cover so that the case and the cover press the relay. A clearance is provided between the case and the cover in an entire area viewing the case from the sandwiching direction of the relay.

A housing includes a first mounting portion having a first through hole penetrating in a first direction and a second mounting portion having a second through hole penetrating in the first direction. The second mounting portion is disposed separately from the first mounting portion to one side in a second direction and is disposed closer to one side in a third direction than the first mounting portion. The first fixed terminal includes a first fastening portion that is exposed outside the housing closer to one side in the third direction than the first mounting portion. The second fixed terminal includes a second fastening portion that is exposed outside the housing closer to an opposite side in the third direction than the second mounting portion and that is disposed closer to the opposite side in the third direction than the first fastening portion.