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CN-122025488-A - Excitation fuse and power supply system

CN122025488ACN 122025488 ACN122025488 ACN 122025488ACN-122025488-A

Abstract

The application discloses an excitation fuse and a power supply system, and relates to the technical field of piezoelectric devices. The exciting fuse comprises a signal fuse, wherein a signal melt area of the signal fuse is divided into a core arc area and a peripheral energy dissipation area, the core arc area is filled with a first arc extinguishing medium, the peripheral energy dissipation area is at least partially arranged around the core arc area, the peripheral energy dissipation area is provided with a second arc extinguishing medium, and the second arc extinguishing medium is used for absorbing and dissipating arc energy dissipated from the core arc area to the peripheral energy dissipation area. According to the excitation fuse, the signal melt area is divided into the core arc area and the peripheral energy dissipation area, and the second arc extinguishing medium is arranged in the peripheral energy dissipation area, so that the absorption and dissipation efficiency of arc energy is obviously improved in a limited space, the problem of shell explosion caused by overlarge local energy is effectively prevented, and the miniaturization and high safety of products are realized.

Inventors

  • WU JIAYUN
  • Liao Rujia
  • ZHU YUHANG
  • GONG ZUOYONG
  • LI QI

Assignees

  • 上海良信电器股份有限公司
  • 良信电器(海盐)有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (10)

  1. 1. An excitation fuse, characterized by comprising a signal fuse (10), the signal fuse (10) having a signal melt region divided into a core arc region (Q1) and a peripheral energy dissipation region (Q2), the core arc region (Q1) being filled with a first quenching medium (70), the peripheral energy dissipation region (Q2) being arranged at least partially around the core arc region (Q1), the peripheral energy dissipation region (Q2) being provided with a second quenching medium for absorbing and dissipating quenching energy dissipated from the core arc region (Q1) to the peripheral energy dissipation region (Q2).
  2. 2. The energized fuse of claim 1, further comprising an arc suppressing fuse (20) for cutting a current carrying conductor (40) upon receipt of an energizing signal to divert and blow a fault current to the arc suppressing fuse (20) to complete breaking of the fault current.
  3. 3. The energized fuse of claim 2, wherein the first quenching medium (70) is an insulating medium and the second quenching medium comprises a wire mesh (50) and/or an insulating mesh plate (60).
  4. 4. A driving fuse as claimed in claim 3, characterized in that when the second quenching medium comprises a wire mesh (50) or an insulating mesh plate (60), the number of wire mesh (50) or insulating mesh plates (60) is at least two, and a third quenching medium (80) is filled between two adjacent wire mesh (50) or insulating mesh plates (60).
  5. 5. A driving fuse as claimed in claim 3, characterized in that when the second quenching medium comprises a wire mesh (50) and an insulating mesh plate (60), the insulating mesh plate (60) and the wire mesh (50) are arranged at intervals, and a third quenching medium (80) is filled between adjacent insulating mesh plates (60) and the wire mesh (50).
  6. 6. The energized fuse according to claim 4 or 5, characterized in that the first quenching medium (70) and/or the third quenching medium (80) are quartz sand, sulphur hexafluoride gas or vacuum.
  7. 7. The energized fuse of claim 6, wherein the particle size and packing density of the quartz sand packed in the core arc region (Q1) is different from the particle size and packing density of the quartz sand packed in the quenching melt region (Q3) of the quenching fuse (20).
  8. 8. The exciting fuse according to claim 3, wherein when the second arc extinguishing medium comprises a wire mesh (50), the wire mesh (50) is arranged laterally and/or vertically, or the wire mesh (50) is of a single-layer structure, a double-layer structure or a multi-layer structure.
  9. 9. The exciting fuse of claim 2, further comprising a partition plate or an insulating cover for partitioning the signal fuse (10) and the arc extinguishing fuse (20) into two chambers independent of each other.
  10. 10. A power supply system comprising an energizing fuse (100) according to any one of claims 1-9.

Description

Excitation fuse and power supply system Technical Field The application relates to the technical field of piezoelectric devices, in particular to an excitation fuse and a power supply system. Background An energized fuse is a circuit protection device that generally includes two core components, a signal fuse and an arc suppressing fuse. The signal fuse is used for detecting fault current and sending a fusing signal, and the arc extinguishing fuse is used for cutting off a current carrying conductor after receiving an excitation signal so as to finish breaking of the fault current. In the prior art, a signal fuse and an arc extinguishing fuse commonly share a chamber, and quartz sand is filled in the chamber to serve as an arc extinguishing medium for absorbing arc energy generated in the breaking process of the signal fuse and the arc extinguishing fuse. However, the structure has the problem that under the overload condition, the whole process from the start of fusing of the signal fuse to the cutting of the current-carrying conductor fault needs to bear all the arc energy, and the quartz sand in the cavity filling cannot effectively absorb the arc energy with such long time and high energy, so that the arc energy absorption is unbalanced. Because the arc energy of the signal melt area is too concentrated, the local melting of the shell of the signal melt area is easy to cause, even the problem of shell explosion occurs, serious potential safety hazards exist, and safety accidents such as fire, explosion and the like of a power distribution cabinet or a battery pack can be possibly caused. In order to solve the above problems, the prior art generally adopts a scheme of increasing the filling amount of quartz sand filled in a signal melt area, but the method is often limited by the volume of a product, and effective energy absorption is difficult to realize in a limited space, which is contradictory to the development trend of miniaturization and integration of electronic equipment. Disclosure of Invention The application aims to provide an excitation fuse and a power supply system, which are characterized in that a signal melt area is divided into a core arc area and a peripheral energy dissipation area, and a second arc extinguishing medium is arranged in the peripheral energy dissipation area, so that the absorption and dissipation efficiency of arc energy is obviously improved in a limited space, the problem of shell explosion caused by overlarge local energy is effectively prevented, and the miniaturization and high safety of products are realized. Embodiments of the present application are implemented as follows: In a first aspect of an embodiment of the present application, there is provided an excitation fuse, including a signal fuse, a signal melt region of the signal fuse being divided into a core arc region and a peripheral energy dissipation region, the core arc region being filled with a first arc extinguishing medium, the peripheral energy dissipation region being disposed at least partially around the core arc region, the peripheral energy dissipation region being provided with a second arc extinguishing medium for absorbing and dissipating arc energy dissipated from the core arc region to the peripheral energy dissipation region. According to the excitation fuse, the signal melt area is divided into the core arc area and the peripheral energy dissipation area, and the second arc extinguishing medium is arranged in the peripheral energy dissipation area, so that the absorption and dissipation efficiency of arc energy is obviously improved in a limited space, the problem of shell explosion caused by overlarge local energy is effectively prevented, and the miniaturization and high safety of products are realized. As an embodiment, the device further comprises an arc extinguishing fuse, which is used for cutting off a current carrying conductor after receiving an excitation signal, transferring fault current to the arc extinguishing fuse and fusing the fault current to finish breaking the fault current. As an embodiment, the first arc extinguishing medium is an insulating medium, and the second arc extinguishing medium comprises a wire mesh and/or an insulating screen. As an embodiment, when the second arc extinguishing medium includes a wire mesh or an insulating mesh plate, the number of the wire mesh or the insulating mesh plate is at least two, and a third arc extinguishing medium is filled between two adjacent layers of the wire mesh or the insulating mesh plate. As an embodiment, when the second arc extinguishing medium includes a wire mesh and an insulating mesh plate, the insulating mesh plate and the wire mesh are disposed at intervals, and a third arc extinguishing medium is filled between adjacent insulating mesh plates and the wire mesh. As an embodiment, the first and/or the third quenching medium is quartz sand, sulfur hexafluoride gas or vacuum. As an embodiment, the particle siz