Abstract

This disclosure relates to fuse body for the fuse and the fuse. The fuse body has a longitudinal direction along a length direction and a transverse direction along a width direction, wherein the fuse body comprises: a main body; a first fusing section comprising a first set of through holes arranged in the main body along the transverse direction and a first set of narrow paths formed in the main body along the orientation of the first set of through holes, wherein along the longitudinal direction, the area of the cross-section of each narrow path of the first set of narrow paths is constant; a second fusing section spaced apart from the first fusing section along the longitudinal direction, wherein the second fusing section comprises a second set of through holes disposed in the main body along the transverse direction and a second set of narrow paths formed in the main body along the orientation of the second set of through holes, wherein along the longitudinal direction, the area of the cross-sectional of each narrow path of the second set of narrow paths tapers in a direction toward the center of this narrow path; wherein a transverse spacing between two adjacent narrow paths of the first set of narrow paths is less than a transverse spacing between two adjacent narrow paths of the second set of narrow paths.

IPC Classes  ?

• H01H 85/08 - Fusible members characterised by the shape or form of the fusible member
• H01H 85/38 - Means for extinguishing or suppressing arc

Abstract

Provided in the present invention is a self-triggered arc-extinguishing smart switch, comprising: a conductor, which is used for carrying main loop currents; a cutting-off apparatus, which is used for cutting off the conductor; an explosion excitation apparatus, which is used for pushing the cutting-off apparatus by means of explosion, so as to cut off the conductor; and a parallel branch, which is connected to the conductor in parallel and has a voltage control module and an arc-extinguishing device, which are connected in series, wherein the voltage control module is configured to remain disconnected when a voltage across two ends thereof is lower than a threshold value, and is configured to turn on when the voltage across the two ends thereof is higher than or equal to the threshold value, and the arc-extinguishing device is used for fusing to perform arc extinguishing when the parallel branch is turned on. By means of the self-triggered arc-extinguishing smart switch in the present invention, when a main loop is cut off, if there is a current in the main loop, a parallel branch is automatically triggered to turn on, such that an arc is safely extinguished; and if there is no current in the main loop, the parallel branch remains disconnected, such that the whole circuit is completely disconnected, thereby ensuring the safety of a system.

IPC Classes  ?

• H01H 3/22 - Power arrangements internal to the switch for operating the driving mechanism
• H01H 9/54 - Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
• H01H 9/30 - Means for extinguishing or preventing arc between current-carrying parts
• H01H 9/10 - Adaptation for built-in fuses

Abstract

Provided in the present invention is a self-triggered arc-extinguishing smart fuse, comprising: a conductor, which is used for carrying main loop currents; a cutting-off apparatus, which is used for cutting off the conductor; an explosion excitation apparatus, which is used for pushing the cutting-off apparatus by means of explosion, so as to cut off the conductor; a parallel branch, which is connected to the conductor in parallel, and has a controllable power module and an arc-extinguishing device which are connected in series; and a signal module, which is used for generating, according to an electromagnetic field change or an arc voltage which is generated when the conductor is cut off, a control signal for controlling the controllable power module, wherein the controllable power module is used for controlling the turning-on and turning-off of the parallel branch, and the arc-extinguishing device is used for fusing to perform arc extinguishing when the parallel branch is turned on. By means of the self-triggered arc-extinguishing smart fuse in the present invention, when there is no current in a main loop, the main loop is cut off, and a parallel branch also remains disconnected; and when there is a current in the main loop, the main loop is cut off, and the parallel branch is automatically triggered to turn on for connection, such that arc extinguishing is completed.

IPC Classes  ?

• H01H 3/22 - Power arrangements internal to the switch for operating the driving mechanism
• H01H 9/30 - Means for extinguishing or preventing arc between current-carrying parts
• H01H 9/10 - Adaptation for built-in fuses

Goods & Services

(1) Pyrotechnical based switch to protect electric circuits