智能熔断器

By introducing a filter device into the smart fuse to purify the explosive gas, isolate the arc burning, and quickly release the gas, the problem of slow breaking speed of traditional fuses at low rated currents is solved. This achieves efficient fault isolation and improved safety, while reducing cost and size, making it suitable for scenarios such as new energy vehicles.

CN224519859UActive Publication Date: 2026-07-17COOPER XIAN FUSE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
COOPER XIAN FUSE
Filing Date
2025-05-21
Publication Date
2026-07-17

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Abstract

本实用新型提供了一种智能熔断器，包括：导体装置，所述导体装置设置有至少一个预断口，并且所述导体装置被配置为能够电连接至所要保护的电路系统；触发机构和切断装置，所述触发机构被配置为根据触发信号产生爆炸气体，所述爆炸气体推动所述切断装置在所述至少一个预断口处切断所述导体装置以断开所述电路系统；位于灭弧腔内的灭弧装置，所述灭弧装置被配置为熄灭在所述至少一个预断口处产生的电弧；过滤装置，所述过滤装置被配置为过滤所述爆炸气体以排除所述电弧灼烧过程中产生的烧蚀物并隔离所述电弧的灼烧；以及阀门装置，所述阀门装置被配置为通过所述爆炸气体产生的压力而打开以将过滤后的爆炸气体排出所述智能熔断器。
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Claims

1. An intelligent fuse, characterized in that, include: A conductor device having at least one pre-break and configured to be electrically connected to the circuit system to be protected; A triggering mechanism and a cutting device, the triggering mechanism being configured to generate an explosive gas according to a trigger signal, the explosive gas driving the cutting device to cut off the conductor device at at least one pre-break point to disconnect the circuit system; An arc-extinguishing device located within an arc-extinguishing cavity, the arc-extinguishing device being configured to extinguish the electric arc generated at the at least one pre-break point; A filtration device configured to filter the explosive gas to remove ablation products generated during the arc burning process and to isolate the arc burning. as well as A valve device configured to open under pressure generated by the explosive gas to discharge filtered explosive gas from the smart fuse.

2. The intelligent fuse of claim 1, wherein, The arc-extinguishing device includes a block of steel wire mesh, which is filled in a portion of the space within the arc-extinguishing chamber.

3. The intelligent fuse of claim 1, wherein, The arc-extinguishing device and the filtering device are constructed as a single unit.

4. The intelligent fuse of claim 1, wherein, The filtration device includes at least an inner first-layer filtration structure and an outer second-layer filtration structure. The first-layer filtration structure is fire-resistant filter cotton, and the second-layer filtration structure is sheet-like steel wire mesh.

5. The intelligent fuse of claim 1, wherein, The arc-extinguishing device and the filtering device are sequentially arranged in the arc-extinguishing chamber along the propagation direction of the explosive gas.

6. The intelligent fuse of claim 5, wherein, The valve device is disposed on the bottom wall of the arc extinguishing chamber and adjacent to the arc extinguishing device, and the valve device is configured not to separate from the smart fuse when the valve device is opened.

7. The intelligent fuse of claim 1, wherein, The valve device is a one-way valve.

8. The intelligent fuse of claim 1, wherein, The valve device includes multiple valves.

9. The intelligent fuse of claim 1, wherein, The triggering mechanism includes an ignition tube or a miniature gas generator.

10. The intelligent fuse of claim 1, wherein, The cutting device is made of insulating material and is configured to keep the conductor device in an open state after it has been cut.