Provided is a circuit assembly with a novel structure that can quickly reduce heat generation at a connection portion of a heat generating component. A circuit assembly includes a heat generating component that generates heat when energized; a energization member that connects to a connection portion of the heat generating component; a fastening member that fastens the energization member to the connection portion; and a heat capacity increasing component that thermally connects to a fastening site of the energization member and the connection portion and increases a heat capacity of the connection portion of the heat generating component.

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.

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.

An electromagnetic relay includes a base, at least one fixed conductive sheet assembly, at least one movable conductive sheet assembly, at least one arc blow component, an electromagnet and an outer cap. The fixed conductive sheet assembly includes a fixed connecting plate and a fixed contact, and the movable conductive sheet assembly includes a movable connecting plate and a movable contact. The base is made of a thermal conductive polymer, and the fixed connecting plate has a first heat conduction part installed in the base and a second heat conduction part connected to the first heat conduction part and extended to an outer side of the base. The electromagnetic relay further includes at least two thermal conduction components installed in the base and symmetrically configured on both opposite sides of the fixed and movable contacts respectively for dissipating the heat generated by the electromagnetic relay.

An electromagnetic relay includes a base, at least one fixed conductive sheet assembly, at least one movable conductive sheet assembly, at least one arc blow component, an electromagnet and an outer cap. The fixed conductive sheet assembly includes a fixed connecting plate and a fixed contact, and the movable conductive sheet assembly includes a movable connecting plate and a movable contact. The base is made of a thermal conductive polymer, and the fixed connecting plate has a first heat conduction part installed in the base and a second heat conduction part connected to the first heat conduction part and extended to an outer side of the base. The electromagnetic relay further includes at least two thermal conduction components installed in the base and symmetrically configured on both opposite sides of the fixed and movable contacts respectively for dissipating the heat generated by the electromagnetic relay.

The present disclosure discloses a specially packaged relay and a packaging method thereof. The relay includes an electromagnetic relay and an injection molded body. The injection molded body is injection molded outside the electromagnetic relay and wraps the electromagnetic relay therein. A plurality of conventional terminals of the electromagnetic relay are respectively exposed, or the conventional terminals of the electromagnetic relay are respectively located within the injection molded body, and each of the conventional terminals of the electromagnetic relay is connected with an external terminal that is exposed. The electromagnetic relay of the present disclosure is completely wrapped and sealed by the injection molded body, and is completely isolated from external liquid, which can effectively prevent the external liquid from flowing into the electromagnetic relay and ensure the electromagnetic relay to work stably for a long time in a liquid environment.

The present disclosure discloses a specially packaged relay and a packaging method thereof. The relay includes an electromagnetic relay and an injection molded body. The injection molded body is injection molded outside the electromagnetic relay and wraps the electromagnetic relay therein. A plurality of conventional terminals of the electromagnetic relay are respectively exposed, or the conventional terminals of the electromagnetic relay are respectively located within the injection molded body, and each of the conventional terminals of the electromagnetic relay is connected with an external terminal that is exposed. The electromagnetic relay of the present disclosure is completely wrapped and sealed by the injection molded body, and is completely isolated from external liquid, which can effectively prevent the external liquid from flowing into the electromagnetic relay and ensure the electromagnetic relay to work stably for a long time in a liquid environment.

A temperature sensor installing device for a power relay assembly is configured to be attached to a lower surface of a bus bar attached to a heating surface of the power relay assembly. The temperature sensor installing device includes: a body housing; a temperature sensor insertion recess formed in an upper portion of the body housing and accommodating a temperature sensor such that a temperature sensing surface of the temperature sensor faces upward; and a nut insertion recess formed in the upper portion of the body housing and accommodating a nut.

A control apparatus includes a processor that determines whether an ice generation condition is satisfied on the basis of at least one or both of a state of a heat source of a vehicle and an outside air temperature after an operation stop of a drive source of the vehicle. If the ice generation condition is satisfied, the processor repeats an ice-crushing operation at a predetermined time interval in a predetermine ice-crushing time period by turning on and thereafter turning off the relay. The predetermined ice-crushing time period is determined on the basis of a temperature difference between a temperature of the fixed contact or the movable contact of the relay and a temperature of an internal atmosphere inside the relay. The predetermined time interval is a time period in which the ice on the fixed contact and the movable contact of the relay grows to a predetermined size.

The technical field includes machine, manufacture, process, and product produced thereby, as well as necessary intermediates, which pertain to power sources, units thereof, computer systems used to facilitate operation of one or more power sources.