An electric circuit cut-off device including a housing, a to-be-cut part, a power source, and a moving body that moves between first and second end portions on opposite sides, a fuse including a fusing portion and an arc-extinguishing material, and a pair of electrode parts connected to terminals on both sides of the fuse. The moving body is configured to cut a piece located between base pieces on both sides of the to-be-cut part and a part of the to-be-cut part and the electrode part come into contact with each other in a state where base pieces on both sides of the to-be-cut part are energized via the cut piece, and the to-be-cut part and the fuse are connected to each other; and thereafter a state in which the base pieces on both sides of the to-be-cut part are energized via the cut piece is cut off.

An electric circuit cut-off device including a housing, a to-be-cut part, a power source, and a moving body that moves between first and second end portions on opposite sides, a fuse including a fusing portion and an arc-extinguishing material, and a pair of electrode parts connected to terminals on both sides of the fuse. The moving body is configured to cut a piece located between base pieces on both sides of the to-be-cut part and a part of the to-be-cut part and the electrode part come into contact with each other in a state where base pieces on both sides of the to-be-cut part are energized via the cut piece, and the to-be-cut part and the fuse are connected to each other; and thereafter a state in which the base pieces on both sides of the to-be-cut part are energized via the cut piece is cut off.

An arc-mitigating fuse including a fuse body, a first endcap covering a first end of the fuse body and a second endcap covering a second end of the fuse body, a fusible element disposed within the fuse body and extending between the first endcap and the second endcap to provide an electrically conductive pathway therebetween, and a plurality of gas-evolving microbeads disposed within the fuse body surrounding the fusible element.

An arc-mitigating fuse including a fuse body, a first endcap covering a first end of the fuse body and a second endcap covering a second end of the fuse body, a fusible element disposed within the fuse body and extending between the first endcap and the second endcap to provide an electrically conductive pathway therebetween, and a plurality of gas-evolving microbeads disposed within the fuse body surrounding the fusible element.

The present utility model relates to a fuse, a vehicle circuit for an electric vehicle, and an electric vehicle. The fuse has a longitudinal direction and a transverse direction, and includes: a bushing, having a through-hole cavity extending in the longitudinal direction and for accommodating quartz sand; a fuse body, accommodated in the through-hole cavity and having a plurality of openings spaced apart from each other in the transverse direction; and two contact blades, positioned at two ends of the through-hole cavity and each soldered to the fuse body by a conductive plate. An arc extinguishing medium layer is provided on the fuse body. A side edge of the arc extinguishing medium layer contacts edges of any two adjacent openings of the plurality of openings so as to cause the arc extinguishing medium layer to be close to a minimum transverse spacing between the two opening edges.

The present utility model relates to a fuse, a vehicle circuit for an electric vehicle, and an electric vehicle. The fuse has a longitudinal direction and a transverse direction, and includes: a bushing, having a through-hole cavity extending in the longitudinal direction and for accommodating quartz sand; a fuse body, accommodated in the through-hole cavity and having a plurality of openings spaced apart from each other in the transverse direction; and two contact blades, positioned at two ends of the through-hole cavity and each soldered to the fuse body by a conductive plate. An arc extinguishing medium layer is provided on the fuse body. A side edge of the arc extinguishing medium layer contacts edges of any two adjacent openings of the plurality of openings so as to cause the arc extinguishing medium layer to be close to a minimum transverse spacing between the two opening edges.

The present utility model relates to a fuse, a vehicle circuit for an electric vehicle, and an electric vehicle. The fuse has a longitudinal direction and a transverse direction, and includes: a bushing, having a through-hole cavity extending in the longitudinal direction and for accommodating quartz sand; a fuse body, accommodated in the through-hole cavity and having a plurality of openings spaced apart from each other in the transverse direction; and two contact blades, positioned at two ends of the through-hole cavity and each soldered to the fuse body by a conductive plate. An arc extinguishing medium layer is provided on the fuse body. A side edge of the arc extinguishing medium layer contacts edges of any two adjacent openings of the plurality of openings so as to cause the arc extinguishing medium layer to be close to a minimum transverse spacing between the two opening edges.

The present utility model relates to a fuse, a vehicle circuit for an electric vehicle, and an electric vehicle. The fuse has a longitudinal direction and a transverse direction, and includes: a bushing, having a through-hole cavity extending in the longitudinal direction and for accommodating quartz sand; a fuse body, accommodated in the through-hole cavity and having a plurality of openings spaced apart from each other in the transverse direction; and two contact blades, positioned at two ends of the through-hole cavity and each soldered to the fuse body by a conductive plate. An arc extinguishing medium layer is provided on the fuse body. A side edge of the arc extinguishing medium layer contacts edges of any two adjacent openings of the plurality of openings so as to cause the arc extinguishing medium layer to be close to a minimum transverse spacing between the two opening edges.

A relay (100) is provided. The relay (100) includes an insulating housing (10) defining an accommodating cavity (11) therein; two binding posts (12) disposed to the insulating housing (10), each having an end extending into the accommodating cavity (11); an insulating plate (20) disposed within the accommodating cavity (11), movable between a first position and a second position, and having two connecting contacts (21) disposed on a first side of the insulating plate (20) facing the binding posts (12); a fuse (30) disposed between the two connecting contacts (21); a mounting base (40) connected to the insulating housing (10); and a push rod (41) movably disposed to the mounting base (40) and connected to the insulating plate (20), in which when the insulating plate (20) is located at the first position, the two connecting contacts (21) abut against the two binding posts (12) respectively, and when the insulating plate (20) is located at the second position, the two connecting contacts (21) detach from the two binding posts (12) respectively.

A relay (100) is provided. The relay (100) includes an insulating housing (10) defining an accommodating cavity (11) therein; two binding posts (12) disposed to the insulating housing (10), each having an end extending into the accommodating cavity (11); an insulating plate (20) disposed within the accommodating cavity (11), movable between a first position and a second position, and having two connecting contacts (21) disposed on a first side of the insulating plate (20) facing the binding posts (12); a fuse (30) disposed between the two connecting contacts (21); a mounting base (40) connected to the insulating housing (10); and a push rod (41) movably disposed to the mounting base (40) and connected to the insulating plate (20), in which when the insulating plate (20) is located at the first position, the two connecting contacts (21) abut against the two binding posts (12) respectively, and when the insulating plate (20) is located at the second position, the two connecting contacts (21) detach from the two binding posts (12) respectively.