CN201285745Y - Large capacity small volume fuse - Google Patents
Large capacity small volume fuse Download PDFInfo
- Publication number
- CN201285745Y CN201285745Y CNU2008201473483U CN200820147348U CN201285745Y CN 201285745 Y CN201285745 Y CN 201285745Y CN U2008201473483 U CNU2008201473483 U CN U2008201473483U CN 200820147348 U CN200820147348 U CN 200820147348U CN 201285745 Y CN201285745 Y CN 201285745Y
- Authority
- CN
- China
- Prior art keywords
- fuse
- volume
- capacity
- filamentary silver
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a high-capacity and small-volume fuse. At present, fuse is widely used for short circuit protection, but the problem that the fuse can not have both high capacity and low volume can not be effectively solved, and the high capacity and larger-volume fuse or circuit breaker used by people can not be well applied to an embedded DC power distribution system with strict requirement for volume due to too large volume. The high-capacity and small-volume fuse comprises wiring terminals, silver-wire fuses and a PCB; the wiring terminals selected according to the magnitude of current are welded on to the PCB; and the silver-wire fuses selected according to the magnitude of current are connected in parallel and directly welded on to two ends of the wiring terminals welded on to the PCB. The high-capacity and small-volume fuse can be both applied to an embedded DC power distribution system with strict requirement for volume and to other equipment or system needing high-capacity and small-volume fuses.
Description
Technical field
The utility model relates to short-circuit protection equipment, is specifically related to the application of batteries loop protection fuse in a kind of direct-flow distribution system.
Background technology
At present; fuse is widely used in the short circuit protection; the big capacity that people adopted, large volume fuse or circuit breaker are all owing to volume is too big; can not well be applied to has in the embedded direct-flow distribution system of strict demand volume, can not get effective solution all the time for the contradiction of big capacity, small size fuse.
The utility model content
The purpose of this utility model is to provide a kind of big capacity small size fuse, so that effectively solve the contradiction of big capacity, small size fuse.
The big capacity small size of the utility model fuse adopts the parallel connection of a plurality of filamentary silver fuse, and directly via hole is welded on the pcb board.The utility model comprises binding post (1), filamentary silver fuse (2) and pcb board (3).Binding post (1) is welded on the PCB (3), selects a plurality of filamentary silver fuses (2) parallel connection according to size of current between binding post, directly welds on the PCB (3).
Advantage of the present utility model is to have obtained jumbo fuse when volume is little, solves the contradiction of big capacity large volume of fuse in the past or small size low capacity.This New Scheme not only can be used at the embedded direct-flow distribution system that volume is had strict demand, also extends in other equipment or system that need big capacity, small size.
Description of drawings
Fig. 1 is a structure intention of the present utility model.
Fig. 2 is the filamentary silver fuse schematic diagram that the utility model adopts;
Among Fig. 1, the 1st, binding post; The 2nd, the filamentary silver fuse; The 3rd, pcb board.
Embodiment
The utility model is described in further details with embodiment below in conjunction with accompanying drawing;
As shown in Figure 1, the utility model comprises binding post (1), filamentary silver fuse (2) and pcb board (3).Binding post (1) is welded on the pcb board (3), selects a plurality of filamentary silver fuses (2) parallel connection according to size of current between binding post, is welded on the pcb board (3).
Since filamentary silver fuse (2) the resistance value tolerance that adopted has only ± 10%, and be directly welded on the PCB, make each be controlled easily by the filamentary silver resistive fuse of parallel connection, i.e. all filamentary silver resistive fuse value high conformities in parallel, total current is divided equally the ratio basically identical, make its parallel operation characteristic and general resistance be as good as.The relatively little filamentary silver fuse of rated current is in parallel to be used owing to can utilize, and when the fuse of the bigger rated current of needs, can realize by a plurality of parallel operations.
For filamentary silver fuse by big electric current, the heat of the big generation of electric current is just high, Copper Foil on the pcb board is difficult to satisfy separately the heat radiation requirement of filamentary silver fuse, therefore but generally all be connected with big copper bar on the binding post of high-current supply, the heat dissipation problem near the filamentary silver fuse at binding post place can effectively be solved.
As shown in Figure 2, according to the disclosed data of existing production firm's filamentary silver fuse, the filamentary silver fuse dimensions of rated current 63A/65Vdc is: φ 1.0mm * 30+2mm (leg diameter * entire length).Be applied in the direct-flow distribution system as 630A/65Vdc fuse of need, its occupation space is very little.Compare with existing known single fuse, not only its volume dwindles greatly, and the current value that can pass through is also quite big, the space of having saved direct-flow distribution system effectively.
The filamentary silver fuse that is directly welded on the pcb board can be according to a plurality of parallel connections of size of current needs.A plurality of filamentary silver fuses between the binding post pad can line up rectangular row or symmetry is circular; Filamentary silver resistive fuse value tolerance is little, and high conformity can arrive the effect of a plurality of filamentary silver fuse current uniforms.
Claims (2)
1. big capacity small size fuse, the filamentary silver fuse is directly welded on the pcb board by the binding post pad, and the filamentary silver fuse that it is characterized in that being directly welded on the pcb board can a plurality of parallel connections.
2. big capacity small size fuse as claimed in claim 1 is characterized in that a plurality of filamentary silver fuses between described binding post pad can be lined up rectangular row or symmetry circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201473483U CN201285745Y (en) | 2008-09-04 | 2008-09-04 | Large capacity small volume fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201473483U CN201285745Y (en) | 2008-09-04 | 2008-09-04 | Large capacity small volume fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201285745Y true CN201285745Y (en) | 2009-08-05 |
Family
ID=40950726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201473483U Expired - Fee Related CN201285745Y (en) | 2008-09-04 | 2008-09-04 | Large capacity small volume fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201285745Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383425A (en) * | 2013-06-28 | 2013-11-06 | 中国航天科技集团公司第五研究院第五一三研究所 | Satellite-borne general power distribution device for high voltage bus and measuring method thereof |
-
2008
- 2008-09-04 CN CNU2008201473483U patent/CN201285745Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383425A (en) * | 2013-06-28 | 2013-11-06 | 中国航天科技集团公司第五研究院第五一三研究所 | Satellite-borne general power distribution device for high voltage bus and measuring method thereof |
| CN103383425B (en) * | 2013-06-28 | 2016-01-20 | 中国航天科技集团公司第五研究院第五一三研究所 | Spaceborne high voltage bus universal power distribution device and measuring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20140904 |
|
| EXPY | Termination of patent right or utility model |