CN108172482A - A kind of liquid metal resettable fuse and its method of work - Google Patents
A kind of liquid metal resettable fuse and its method of work Download PDFInfo
- Publication number
- CN108172482A CN108172482A CN201711340994.1A CN201711340994A CN108172482A CN 108172482 A CN108172482 A CN 108172482A CN 201711340994 A CN201711340994 A CN 201711340994A CN 108172482 A CN108172482 A CN 108172482A
- Authority
- CN
- China
- Prior art keywords
- liquid metal
- type housing
- resettable fuse
- fuse
- electrode
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/06—Fusible members characterised by the fusible material
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- Fuses (AREA)
Abstract
The present invention relates to fuse technical fields, disclose a kind of liquid metal resettable fuse, which is characterized in that including：H-type housing and electrode, it is equipped in H-type housing in runner and H-type housing for filling liquid metal and is equipped with compression current path structure, the cross-sectional area of liquid metal in compression current path structure is less than the cross-sectional area of the liquid metal in H-type housing other parts, the both ends connection of electrode and liquid metal.The present invention utilize liquid metal self-contraction effect, good electric conductivity and mobility, have can repeatedly use, is simple in structure, energy-saving and environment-friendly outstanding advantage.
Description
Technical field
The present invention relates to fuse technical field, more particularly to a kind of liquid metal resettable fuse and its work side
Method.
Background technology
Fuse is also referred to as current insurance silk, has been mainly overload protective function.Market fuse type on sale
It is various, each there is different design concepts, but most of fuse is all disposable structure, use is required for weight later
It is new to replace, it is also a kind of greatly waste to resource while bringing inconvenience to people's life.
Existing resettable fuse in the market is mainly self-healing fuse-wire, it is mainly by fluoropolymer resin
Matrix and incorporation conducting particles therein composition, the crystal structure for changing matrix by the temperature-rise effect that current strap is come are realized and are protected
Effect, matrix cooling recrystallization restores the self- recoverage that original crystal structure realizes fuse after being disconnected by circuit, is a kind of
Positive temperature coefficient over-current protection element, at the same also can be considered a kind of directly-heated type, step change type thermistor.At present, macromolecule from
Restore fuse and be mainly used in the design of electronic circuit plank original paper and short circuit and the overload protection of small-power electronic equipment,
And for normal domestic use circuit and in/high-power electric appliance, what is used at present is all the disposable fuse of fusing type, thus send out
Opening up the resettable fuse to match has extensive market application foreground.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of liquid metal resettable fuse and its method of works, solve in the prior art
Normal domestic use circuit and in/high-power electric appliance all use fusing type disposable fuse, need to re-replace after fusing, give
The problem of people's life is also a kind of greatly waste to resource while bringing inconvenience.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of liquid metal resettable fuses, which is characterized in that packet
It includes：H-type housing and electrode, interior be equipped with of the H-type housing are pressed for being equipped in the runner of filling liquid metal and the H-type housing
Contracting current path structure, the cross-sectional area of the liquid metal in the compression current path structure are less than in the H
The cross-sectional area of the liquid metal of shell body other parts, the electrode are connect with the both ends of the liquid metal.
Wherein, the compression current path structure is set on the middle part of the H-type housing.
Wherein, the compression current path structure is circular hole, square hole or fine crack.
Wherein, also filled with inert protective gas in the H-type housing.
Wherein, the shape of the H-type housing is cylindrical or rectangular.
Wherein, the shape of the electrode is cylindrical or rectangular.
Wherein, the liquid metal is low-melting-point metal or its alloy.
Wherein, the liquid metal is gallium, gallium-indium alloy, gallium-indium-tin alloy or bismuth indium stannum alloy.
Wherein, the electrode is cap structure electrode, and the cap structure electrode sleeve is set on the both ends of the H-type housing.
Invention additionally discloses a kind of method of works of liquid metal resettable fuse, which is characterized in that including：
During energization, the current density for flowing through compression current path structure is much larger than the electric current for flowing through H-type housing other parts
Density, liquid metal form the magnetic field of uneven distribution；
When the electric current under normal circumstances, flowing through liquid metal is smaller, Magnetic field inhomogeneity distributed degrees are relatively low, and liquid metal is not
It shrinks or contraction intensity very little；
When short-circuit condition is to the electric current for flowing through liquid metal is larger, and Magnetic field inhomogeneity distributed degrees are huge, and driving is in pressure
Liquid metal in contracting current path structure is shunk, until cut-out, causes fuse to be cut off；
When short trouble excludes, fuse is shaken, the liquid metal of flowing is made to connect again.
(3) advantageous effect
A kind of liquid metal resettable fuse provided by the invention and its method of work, utilize the self-constriction of liquid metal
Effect, good electric conductivity and mobility, have can repeatedly use, is simple in structure, energy-saving and environment-friendly outstanding advantage.
Description of the drawings
Fig. 1 is a kind of structure diagram of liquid metal resettable fuse of the present invention；
Fig. 2 is a kind of principle schematic of liquid metal resettable fuse of the present invention.
In figure, 1, electrode；2nd, inert protective gas；3rd, H-type housing；4th, current path structure is compressed；5th, liquid metal；J1
To compress the current density in current path structural outer liquid metal,Electric current to flow through the operative liquid metal generates
Magnetic flux density, J2To compress the current density in current path inside configuration liquid metal,To flow through operative liquid gold
The magnetic flux density that the electric current of category generates.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As depicted in figs. 1 and 2, the present invention discloses a kind of liquid metal resettable fuse, which is characterized in that including：H-type
Housing 3 and electrode 1 are equipped in H-type housing 3 in runner and H-type housing 3 for filling liquid metal 5 and are equipped with compression electric current and lead to
Line structure 4, the cross-sectional area of the liquid metal 5 in compression current path structure 4 are less than in 3 other parts of H-type housing
The cross-sectional area of liquid metal 5, electrode 1 are connect with the both ends of liquid metal 5.
The principle of the present invention is：When the electric current flowed through is more than rated value, liquid metal 5 is received under magnetic fields
Contracting, cuts off the electric current flowed through.
Specifically, compression current path structure 4 is equipped in H-type housing 3.During energization, compression current path structure 4 is flowed through
The current density of liquid metal 5 is much larger than the current density for the liquid metal 5 for flowing through 3 other parts of H-type housing, thus two parts
There is unstable Distribution of Magnetic Field for liquid metal 5.Under normal circumstances, the electric current for flowing through liquid metal 5 is smaller, Magnetic field inhomogeneity
Distributed degrees are relatively low, are not enough to initiation liquid metal 5 and shrink or shrink very little, therefore being capable of normal transmission.When short trouble is sent out
When raw, due to steeply rising for electric current, the current density gap for flowing through two parts liquid metal 5 is increased sharply, correspondingly Distribution of Magnetic Field
Degree of irregularity deepen and liquid metal 5 driven to shrink, suffered by the liquid metal 5 for flowing through compression current path structure 4
Lorentz force member is higher than the Lorentz force suffered by other parts, due to the mobility of liquid metal 5, in the work of Lorentz force
With being extruded and think external movement, until liquid metal 5 is disconnected, electric current is caused to disconnect.After troubleshooting, insurance is gently shaken
Silk, the liquid metal 5 of flowing reconnect, you can reuse.As shown in Fig. 2, in liquid metal resettable fuse
It is interiorIt is total to set up.Compression current path structure 4 inside the fuse of the present invention can set one
Can set it is multiple, can independently using or be used in conjunction with each other, and according to compression current path structure 4 size, shape
It can be applied the fuse in different current classes from usage quantity.The fuse of the present invention can be applied to current class
In the circuit of 1-1000A, the running current of 1000A, preferred electric current etc. can be ensured by being expressed as this fuse highest
Grade is 2-300A.
Fuse provided by the invention utilizes self-contraction effect, good electric conductivity and the mobility of liquid metal, compares
For traditional fuse, have can repeatedly use, is simple in structure, energy-saving and environment-friendly outstanding advantage.
Wherein, compression current path structure 4 is set on the middle part of H-type housing 3.I.e. after liquid metal 5 is filled with H-type housing 3,
5 cross-sectional area of liquid metal in middle section is less than 5 cross-sectional area of liquid metal in both ends, when short-circuit, liquid gold
Belong to 5 to be cut off from 3 middle section of H-type housing.
Wherein, compression current path structure 4 be circular hole, square hole, fine crack or other to be less than 3 other parts of H-type housing transversal
The structure of area.Specifically, the compression current path of the shapes such as polygonal hole and irregularly-shaped hole may be used in those skilled in the art
Structure 4.
Wherein, also filled with inert protective gas 2 in H-type housing 3, specifically, liquid metal 5 does not fill entire H-type housing
3, inert protective gas 2 is poured in its complementary space of H-type housing 3.Inert protective gas 2 is argon gas, nitrogen etc., can also be filled
Air.
Wherein, the shape of H-type housing 3 is cylindrical or rectangular.
Wherein, the shape of electrode 1 is cylindrical or rectangular.
Wherein, liquid metal 5 is low-melting-point metal or its alloy.
Preferably, liquid metal 5 is gallium, gallium-indium alloy, gallium-indium-tin alloy or bismuth indium stannum alloy.
Wherein, electrode 1 is cap structure electrode, and cap structure electrode sleeve is set on the both ends of H-type housing 3, and cap structure electrode can be stretched
Enter and contacted in H-type housing 3 with liquid metal 5, for inducing current into and exporting.
Invention additionally discloses a kind of method of works of liquid metal resettable fuse, which is characterized in that including：
During energization, the current density for flowing through compression current path structure is much larger than the electric current for flowing through H-type housing other parts
Density, liquid metal form the magnetic field of uneven distribution；
When the electric current under normal circumstances, flowing through liquid metal is smaller, Magnetic field inhomogeneity distributed degrees are relatively low, and liquid metal is not
It shrinks or contraction intensity very little；
When short-circuit condition is to the electric current for flowing through liquid metal is larger, and Magnetic field inhomogeneity distributed degrees are huge, and driving is in pressure
Liquid metal in contracting current path structure is shunk, until cut-out, causes fuse to be cut off；
When short trouble excludes, fuse is shaken, the liquid metal of flowing is made to connect again.Specifically, in this insurance
Silk is poured into before liquid metal, and H-type enclosure interior first is carried out deoxidation processing, and deoxidation solution can be that alkalinity or acidity are molten
Liquid, such as：Sodium hydroxide solution or dilute hydrochloric acid etc..
According to a kind of liquid metal resettable fuse of the above present invention and its method of work, there are following 3 embodiments, say
Influence of the bright compression current path structure to current class.
Embodiment 1：
H-type housing 3 is cylinder, compresses hole (a diameter of 2mm, depth 2mm that current path structure 4 is Φ 2mm × 2mm
Circular hole), electrode 1 is cap structure, and liquid metal 5 be 16 DEG C of Ga75In25 fusing points (fusing point for 16 DEG C of gallium-indium alloy), liquid
The groundwater increment of metal 5 is just to flood the hole of Φ 2mm.According to laboratory actual measurement as a result, the fuse under the Parameter Conditions is fitted
Current class is between 25~30A.
Embodiment 2：
Compress hole (a diameter of 0.5mm, depth be the circular hole of 3mm) of the current path structure 4 for Φ 0.5mm × 3mm, liquid gold
The groundwater increment for belonging to 5 is just to flood the hole of Φ 0.5mm.Remaining parameter and process are the same as embodiment 1.According to the knot of laboratory test
Fruit, the current class that the fuse under the Parameter Conditions is applicable in is between 1~5A.
Embodiment 3：
(bottom surface is long 3mm, the pros of wide 3mm for square hole that the structure of internal compression current path is 3mm × 3mm × 5mm
Shape, depth are the square hole of 5mm), the groundwater increment of liquid metal 5 is floods 0.5mm on 3mm × 3mm × 5mm holes.
Remaining parameter and process are the same as embodiment 1.
According to laboratory survey as a result, the current class that is applicable in of the fuse under the Parameter Conditions 100~110A it
Between.
A kind of liquid metal resettable fuse provided by the invention and its method of work, utilize the self-constriction of liquid metal
Effect, good electric conductivity and mobility, have can repeatedly use, is simple in structure, energy-saving and environment-friendly outstanding advantage.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of liquid metal resettable fuse, which is characterized in that including：H-type housing (3) and electrode (1), the H-type shell
It is equipped in body (3) in runner and the H-type housing (3) for filling liquid metal (5) and is equipped with compression current path structure
(4), the cross-sectional area of the liquid metal (5) in the compression current path structure (4) is less than in the H-type housing
(3) cross-sectional area of the liquid metal (5) of other parts, the electrode (1) and the both ends of the liquid metal (5) connect
It connects.
2. liquid metal resettable fuse as described in claim 1, which is characterized in that the compression current path structure
(4) set on the middle part of the H-type housing (3).
3. liquid metal resettable fuse as described in claim 1, which is characterized in that the compression current path structure
(4) it is circular hole, square hole or fine crack.
4. liquid metal resettable fuse as described in claim 1, which is characterized in that in the H-type housing (3) also filled with
Inert protective gas (2).
5. liquid metal resettable fuse as described in claim 1, which is characterized in that the shape of the H-type housing (3) is
It is cylindrical or rectangular.
6. liquid metal resettable fuse as described in claim 1, which is characterized in that the shape of the electrode (1) is circle
Cylindricality is rectangular.
7. liquid metal resettable fuse as described in claim 1, which is characterized in that the liquid metal (5) is eutectic
Point metal or its alloy.
8. liquid metal resettable fuse as claimed in claim 7, which is characterized in that the liquid metal (5) is gallium, gallium
Indium alloy, gallium-indium-tin alloy or bismuth indium stannum alloy.
9. liquid metal resettable fuse as described in claim 1, which is characterized in that the electrode (1) is cap structure electricity
Pole, the cap structure electrode sleeve are set on the both ends of the H-type housing (3).
10. a kind of method of work of liquid metal resettable fuse, which is characterized in that including：During energization, compression electric current is flowed through
The current density of access structure is much larger than the current density for flowing through H-type housing other parts, and liquid metal forms uneven distribution
Magnetic field；
When the electric current under normal circumstances, flowing through liquid metal is smaller, Magnetic field inhomogeneity distributed degrees are relatively low, and liquid metal does not occur
Contraction or contraction intensity very little；
When short-circuit condition is to the electric current for flowing through liquid metal is larger, and Magnetic field inhomogeneity distributed degrees are huge, and driving is in compression electricity
Liquid metal in circulation line structure is shunk, until cut-out, causes fuse to be cut off；
When short trouble excludes, fuse is shaken, the liquid metal of flowing is made to connect again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711340994.1A CN108172482A (en) | 2017-12-14 | 2017-12-14 | A kind of liquid metal resettable fuse and its method of work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711340994.1A CN108172482A (en) | 2017-12-14 | 2017-12-14 | A kind of liquid metal resettable fuse and its method of work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108172482A true CN108172482A (en) | 2018-06-15 |
Family
ID=62525443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711340994.1A Pending CN108172482A (en) | 2017-12-14 | 2017-12-14 | A kind of liquid metal resettable fuse and its method of work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108172482A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119308A (en) * | 2018-10-30 | 2019-01-01 | 深圳市金合联供应链技术有限公司 | Liquid metal structure self-mending fuse |
| CN109559949A (en) * | 2018-11-20 | 2019-04-02 | 汪洋 | A kind of reusable fuse |
| CN110853994A (en) * | 2019-11-28 | 2020-02-28 | 曹文保 | Repeatedly usable's continuous disconnected formula fuse |
| CN111223731A (en) * | 2020-01-15 | 2020-06-02 | 云南电网有限责任公司电力科学研究院 | Liquid metal self-recovery fuse |
| CN112885676A (en) * | 2020-12-25 | 2021-06-01 | 宫二平 | Self-starting fuse for power protection |
| CN113066692A (en) * | 2020-01-02 | 2021-07-02 | 中国科学院理化技术研究所 | Temperature-controlled switch and manufacturing method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119308A (en) * | 2018-10-30 | 2019-01-01 | 深圳市金合联供应链技术有限公司 | Liquid metal structure self-mending fuse |
| CN109119308B (en) * | 2018-10-30 | 2024-02-20 | 深圳市金合联技术股份有限公司 | Liquid metal structure self-resetting fuse |
| CN109559949A (en) * | 2018-11-20 | 2019-04-02 | 汪洋 | A kind of reusable fuse |
| CN110752128A (en) * | 2018-11-20 | 2020-02-04 | 汪洋 | Reusable fuse and using method thereof |
| CN110752128B (en) * | 2018-11-20 | 2021-09-10 | 国网上海市电力公司 | Reusable fuse and using method thereof |
| CN110853994A (en) * | 2019-11-28 | 2020-02-28 | 曹文保 | Repeatedly usable's continuous disconnected formula fuse |
| CN110853994B (en) * | 2019-11-28 | 2021-12-28 | 浦江利浩电子科技有限公司 | Repeatedly usable's continuous disconnected formula fuse |
| CN113066692A (en) * | 2020-01-02 | 2021-07-02 | 中国科学院理化技术研究所 | Temperature-controlled switch and manufacturing method thereof |
| CN113066692B (en) * | 2020-01-02 | 2022-10-28 | 中国科学院理化技术研究所 | Temperature-controlled switch and manufacturing method thereof |
| CN111223731A (en) * | 2020-01-15 | 2020-06-02 | 云南电网有限责任公司电力科学研究院 | Liquid metal self-recovery fuse |
| CN112885676A (en) * | 2020-12-25 | 2021-06-01 | 宫二平 | Self-starting fuse for power protection |
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Application publication date: 20180615 |
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| RJ01 | Rejection of invention patent application after publication |