CN103594300B - A kind of temperature fuse and manufacture method thereof - Google Patents
A kind of temperature fuse and manufacture method thereof Download PDFInfo
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- CN103594300B CN103594300B CN201310647640.7A CN201310647640A CN103594300B CN 103594300 B CN103594300 B CN 103594300B CN 201310647640 A CN201310647640 A CN 201310647640A CN 103594300 B CN103594300 B CN 103594300B
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Abstract
One temperature fuse of the present invention and manufacture method thereof, a kind of temperature fuse, Thermal Cutoffs element for mancarried electronic aid battery, fusing-off temperature is between 70～110 DEG C, at least include: one with the electrically-conductive backing plate of electrode, four weld zones of separation are had on described electrically-conductive backing plate, with the center line of described electrically-conductive backing plate as symmetry axis, each symmetrical two weld zones, one adjacent with symmetry axis, one outside being located at electrically-conductive backing plate, these two weld zones are conducting state, make electrically-conductive backing plate both sides respectively form a conducting district；And be state of insulation between two conducting districts；A pair metallic conduction part；One thickness is 0.1mm～0.4mm fusable links；One fluxes disconnected agent；One insulation crust, disconnected agent of fluxing is enclosed in electrically-conductive backing plate upper surface.The present invention not only simple in construction, Ultra Low Cost, and on the premise of guarantee is ultra-thin, intensity is high, it is safe and reliable to use, and also has the advantages such as the rated current allowing to pass through is big.
Description
Technical field
One temperature fuse of the present invention and manufacture method thereof, relate to use for electronic products New temperature electrical fuse element, especially
It is a kind of Novel temperature fuse for mancarried electronic aid battery.
Background technology
In recent years, communications industry is the most flourishing, especially in terms of radio communication, the market of mobile phone oneself spread to almost
It it is staff one machine.The universal expansion directly having driven mobile phone parts especially battery of mobile phone market scale of mobile phone.
Current most of battery of mobile phone simply relies on overcurrent protection, say, that can only provide overcurrent protection, even if being
When current stabilization, according to Joule heat law, the rising that its temperature still can continue, if temperature persistently raises or directly
Set off an explosion；Then cathode block in lithium battery gradually precipitating metal lithium touches anode seat, causes short circuit to produce
Dangerous.
Alloy type thermal fuse is a kind of reliable protection element, and it is expendable, although having can only
Action shortcoming once, but on the other hand, its security but substantially increases, as long as living through a high temperature to make temperature
The battery of degree blown fuse, would rather give it up, because under regular service conditions, the probability causing Thermal Cutoffs to fuse is
The least.
But being as the development of electronic component miniaturization, more and more less to the dimensional requirement of Thermal Cutoffs, size is the least,
The running current of Thermal Cutoffs is also the most restricted.Need a kind of to meet small size and can meet again the temperature of big electric current
Fuse.
Fig. 1, Fig. 2 show existing several Thermal Cutoffs.Although its size can meet more occasion, but
Reduce the most limited through being difficult to reduce further length (W) and the width (D) of product ontology, i.e. enable.If reducing product by force
Product size, necessarily brings the deterioration of the properties of product such as hot strength.
Applicant crossed two relevant to temperature fuse patent in 2008 with SEPARATE APPLICATION in 2009.
Thin temperature fuse disclosed in Publication No. CN101465252A, by fusible core, pair of pins and capsulation material structure
Becoming, described capsulation material is made up of upper carrier band and lower carrier band, the end of the whole and pair of pins of cladding fusible core and flux
Portion, seals fusible core and flux, and one pair of which pin is connected with each other by fusible core, and flux is coated on outside fusible core, is formed
Fuse gross thickness is not more than 1.0mm.Fusible core described in this application is dumbbell shape, has two rounded ends, and described two draw
The end of pin is each formed with the breach of circular arc, and two circular arc-shaped end of described fusible core are embedded in the circular arc cutaway of pin end
Interior mutually interference fit.The flux acid number that this invention uses is low, is substantially reduced metal protection, and long durability is good, and
Effect of fluxing is notable, it can be made to fuse by quick humidification metal, high/low temperature alternation not crystallization, anti-oxidant, flash-point is high, volatility is little,
Good insulating, is to cooperate with the preferable flux of temperature fuse.
Publication No. CN101763982A discloses a kind of thin temperature fuse, and described thin temperature fuse includes
A pair metal pins, metal pins is relatively arranged in a linear and leaves spacing between end, being provided with in the lower section of metal pins end
Lower carrier band, is weldingly connected by fusible core between both ends, is painted with flux on fusible core, and upper carrier band covers from above, upper carrier band
Form a confined space with downloading band, metal pins end, fusible core and flux are sealed in the inside of this confined space,
The middle part of this fuse is additionally provided with middle carrier band, is provided with bed course in this in the middle part of carrier band, and bed course is located between two metal pins ends
In spacing, by mutually transverse for both ends obstruct, and longitudinally intercept between fusible core and lower carrier band.This invention effectively reduces fusing
Temperature, flux is difficult to the step on excessive and metal pins or bending more meets use requirement.
But in actual production, still cannot meet the needs that client minimizes further, it is necessary to above-mentioned temperature is melted
Further improvement made by disconnected device.
Summary of the invention
Present invention aim at: provide one can the most significantly reduce product size, and do not reduce hot strength, product
Performance does not declines, and allows the temperature fuse by bigger rated current.
Another object of the present invention is to provide the manufacture method of a kind of described temperature fuse.
To achieve the above object of the invention, the technical scheme that the present invention provides is: a kind of temperature fuse, for portable electronic piece
The Thermal Cutoffs element of device battery, the fusing-off temperature of described temperature fuse, between 70～110 DEG C, at least includes:
One, with the electrically-conductive backing plate of electrode, described electrically-conductive backing plate has four weld zones of separation, with described electrically-conductive backing plate
Center line be symmetry axis, each symmetrical two weld zones, one is adjacent with symmetry axis, and one is located at outside electrically-conductive backing plate
Side, these two weld zones are conducting state, make electrically-conductive backing plate both sides respectively form a conducting district, and are exhausted between two conducting districts
Edge state；
A pair metallic conduction part, the respectively first metallic conduction part and the second metallic conduction part, described first metallic conduction
Part and the second metallic conduction part are respectively welded at the weld zone, two outsides of described electrically-conductive backing plate；
One fusable links, is at least to include bismuth (Bi), indium (In), the alloy of tin (Sn), is arranged at described two and symmetry
On the weld zone that axle is adjacent, thickness is 0.1mm～0.4mm；
One fluxes disconnected agent, is arranged in described fusable links, directly connects with described fusable links, the pair of metallic conduction part
Touch, described in flux disconnected agent except play help fusable links quick fuse effect in addition to, also act as supports insulative shell, prevent shell
The effect of deformation；
One insulation crust, the disconnected agent of fluxing of described insulation crust is enclosed in electrically-conductive backing plate upper surface.Fluxing outside disconnected agent
Side, by the mode of spraying, makes an insulation crust, forms the confined space that disconnected agent of fluxing is enclosed.
The present invention, because need not lower carrier band, saves a Rotating fields, therefore makes product of the present invention prepare the thinnest less.
Concrete, on described electrically-conductive backing plate four weld zones separated be respectively as follows: the first weld zone, the second weld zone,
3rd weld zone and the 4th weld zone.Described first weld zone and the second weld zone are a conducting district, in conducting state, are positioned at
On the left of described electrically-conductive backing plate, the first weld zone is in outside, and the second weld zone is in inner side, adjacent with symmetry axis；Described 3rd welding
District and the 4th weld zone are that another turns on district, in conducting state, are positioned on the right side of described electrically-conductive backing plate, including the 3rd weld zone
Side, adjacent with symmetry axis, the 4th weld zone is in outside.It is state of insulation between second weld zone and the 3rd weld zone.
Described fusable links is arranged between the second weld zone and the 3rd weld zone, described first metallic conduction part and the second gold medal
Belong to electric-conductor to be respectively welded in the first weld zone and the 4th weld zone.
On the basis of such scheme, the main material of described electrically-conductive backing plate is non-conducting material, for ceramic material and/or polymerization
Thing material etc..
On the basis of such scheme, described four weld zones are good conductor material, for the one in copper, silver, gold or one
Plant above alloy, i.e. main material such as copper, silver, gold etc..Preferably, the metallic conduction part material used is copper product or copper
The good conductor material of alloy material, nickel or nickel alloy material or other electricity, it is also possible to be copper or Cu alloy material, nickel or nickel alloy
The good conductor material of other electricity of surface re-plating of the good conductor material of material or other electricity or alloy material.Particularly use resistance
The material that rate is the lowest, so that the resistance value of final temperature fuse product is the lowest, can apply to making of bigger electric current
Use occasion.
On the basis of such scheme, the spatial altitude that the area of the described weld zone adjacent with symmetry axis is multiplied by above it obtains
The accommodated alloy volume V2 gone out, is greater than the cumulative volume V1 of fusable links.
The present invention provides the manufacture method of a kind of temperature fuse, sequentially comprises the steps:
First, make with the electrically-conductive backing plate of four weld zones, four weld zones from left to right be the first weld zone, the
Two weld zones, the 3rd weld zone and the 4th weld zone, described first weld zone and the second weld zone are a conducting district, described the
Three weld zones and the 4th weld zone are that another turns on district；
Second, on described electrically-conductive backing plate, it is positioned at the first weld zone and the 4th outside electrically-conductive backing plate two conducting district
Weld zone is respectively welded a metallic conduction part；
3rd, on described electrically-conductive backing plate, it is positioned at the second weld zone and the 3rd inside electrically-conductive backing plate two conducting district
Welding interval arranges a fusable links；
4th, cover, on above-mentioned fusable links surface, disconnected agent of fluxing；
5th, form that disconnected agent of fluxing is encapsulated in the outside of disconnected agent of fluxing by spraying method airtight
Space, forms an insulation crust at electrically-conductive backing plate upper surface.
According to above-mentioned composition, present invention miniaturization to be reached, the temperature fuse of slimming can be obtained.
The present invention relatively prior art ratio not only simple in construction, Ultra Low Cost, and on the premise of guarantee is ultra-thin, intensity
High, use safe and reliable, it is allowed to the advantages such as the rated current passed through is big.
Accompanying drawing explanation
Fig. 1 is existing Thermal Cutoffs；
Fig. 2 is another kind of existing Thermal Cutoffs；
Fig. 3 is electrically-conductive backing plate schematic diagram of the present invention；
Fig. 4 is to install schematic diagram after metallic conduction part on electrically-conductive backing plate of the present invention；
Fig. 5 is that the present invention installs schematic diagram after fusable links；
Fig. 6 is that the present invention installs schematic diagram after disconnected agent of fluxing；
Fig. 7 is that the present invention forms schematic diagram after insulation crust；
Fig. 8 is schematic appearance of the present invention.
Label declaration in accompanying drawing:
1 first weld zone；2 second weld zones；
3 the 3rd weld zones；4 the 4th weld zones；
5 electrically-conductive backing plates；The center line of 51 electrically-conductive backing plates；
6 first metallic conduction parts；7 second metallic conduction parts；
8 fusable links；9 flux disconnected agent；
10 insulation crusts.
Detailed description of the invention
Refer to below Fig. 3 of Figure of description be electrically-conductive backing plate schematic diagram of the present invention, Fig. 4 be on electrically-conductive backing plate of the present invention
Install schematic diagram after metallic conduction part, Fig. 5 is schematic diagram after the present invention installs fusable links, Fig. 6 is that the present invention installs disconnected agent of fluxing
Rear schematic diagram, Fig. 7 are that to form schematic diagram and Fig. 8 after insulation crust be schematic appearance of the present invention to the present invention, and the present invention is entered one
Step describes.
A kind of temperature fuse, for the Thermal Cutoffs element of mancarried electronic aid battery, fusing-off temperature is 70～110
Between DEG C, at least include:
One, with the electrically-conductive backing plate 5 of electrode, described electrically-conductive backing plate has four weld zones of separation, with described electrically-conductive backing plate
Center line 51 be symmetry axis, described four weld zones are symmetrical, are distributed in described electrically-conductive backing plate 5 both sides two-by-two, specifically
Saying, described four weld zones are respectively the first the 1, second weld zone the 2, the 3rd, weld zone weld zone 3 and the 4th weld zone 4.Described
First weld zone 1 and the second weld zone 2 are a conducting district, in conducting state, are positioned on the left of described electrically-conductive backing plate 5, the first weldering
Meeting district 1 in outside, the second weld zone 2 is in inner side；Described 3rd weld zone 3 and the 4th weld zone 4 turn on district for another, in leading
Logical state, is positioned on the right side of described electrically-conductive backing plate 5, and the 3rd weld zone 3 is in inner side, and the 4th weld zone 4 is in outside.Second weld zone 2
And it is state of insulation between the 3rd weld zone 3.
A pair metallic conduction part, the respectively first metallic conduction part 6 and the second metallic conduction part 7, described first metal is led
Electricity part 6 is welded on the first weld zone 1, and the second metallic conduction part 7 is welded on the 4th weld zone 4.
One fusable links 8, thickness is 0.1mm～0.4mm, is the alloy at least including bismuth, indium, tin, and described fusable links 8 sets
It is placed between the second weld zone 2 and the 3rd weld zone 3.
One fluxes disconnected agent 9, is arranged in described fusable links 8, straight with described fusable links 8, the pair of metallic conduction part 6,7
Contact.Described flux disconnected agent 9 except play help fusable links 8 quick fuse effect in addition to, also act as outside supports insulative shell 10
The effect of shape.
One insulation crust 10, the disconnected agent of fluxing of described insulation crust 10 is airtight.In the outside fluxing disconnected agent 9, with spraying
Mode, makes an insulation crust 10, forms the confined space 11 that disconnected agent 9 of fluxing is enclosed.
Such as making that Fig. 3 to Fig. 7 is the present invention and installation process schematic diagram:
As it is shown on figure 3, first make the electrically-conductive backing plate with four weld zones.Wherein the first weld zone 1 welds with second
District 2 is short-circuit, keeps apart with insulating materials between the first weld zone 1 and the second weld zone 2.3rd weld zone 3 and the 4th
Weld zone 4 is short-circuit, keeps apart with insulating materials between the 3rd weld zone 3 and the 4th weld zone 4.
Preferably, the material that aforementioned four weld zone engages with electrically-conductive backing plate 5 is the material that the resistivity such as copper, nickel is relatively low,
Surface is preferably electrotinning material or other can be with the metal material of good welds with fusable links.In order to make the product of temperature fuse
Product can be used in the occasion of bigger electric current, it is also possible to the thickness increasing conductive material reduces the resistance of product.
As the material of electrically-conductive backing plate 5, can be the insulating materials such as the ceramic material of insulation, polymer resin material.Its
On by conductive metal material in the mode pressings such as hot pressing, then by the method such as corrosion unwanted metal removal, form need
The weld zone wanted or title conduction region.Additionally need not conductive material exposed section insulator-coating in metal material surface, shape
Become insulating barrier.
As shown in Figure 4, then the first metallic conduction part 6 and the second metallic conduction part 7 hot weld, Laser Welding, Reflow Soldering are passed through
It is respectively welded at the first weld zone 1 and the 4th weld zone 4 etc. welding method.
The metallic conduction part material that the present embodiment uses be copper product or Cu alloy material, nickel or nickel alloy material or other
The good conductor material of electricity, it is also possible to be the table of the good conductor material of copper or Cu alloy material, nickel or nickel alloy material or other electricity
The good conductor material of other electricity of face re-plating or alloy material.Particularly with the material that resistivity is the lowest, so that final
The resistance value of temperature fuse product is the lowest, can apply to the use occasion of bigger electric current.
As it is shown in figure 5, again low-melting alloy is bridged by the mode such as Laser Welding, hot weld be welded on the second weld zone 2 with
Between 3rd weld zone 3, this low-melting alloy is fusable links 8.
Preferably, the fusing point of the low-melting alloy used is between 70～110 DEG C, and the fusing point DSC method of alloy is surveyed
Examination.Mainly comprising as Bi (10%～30%), In(30%～60% of alloy), Sn(20%～50%), Zn(0%～10%).
The thickness of the alloy material of described fusable links 8 is 0.1mm～0.4mm, when the thickness of alloy is bigger, and product total
Size is the most relatively thick, so that the resistance value of final temperature fuse product is the lowest, can apply to bigger electric current
Use occasion.
As shown in Figure 6, coating one layer of disconnected agent 9 of fluxing on the surface of fusable links 8, the disconnected agent 9 of fluxing of this layer is played the most indirectly
The effect of certain space is formed above fusable links 8.The space that this space provides necessary when fusable links 8 fuses is past for fusable links 8
Both sides are shunk, i.e. fusable links 8 is shunk toward the second weld zone 2 with the 3rd weld zone 3.
The area of described second weld zone 2 and the 3rd weld zone 3 is multiplied by the accommodated conjunction that the spatial altitude above it draws
Gold volume V2, is greater than the cumulative volume V1 of fusable links 8, preferably V2/V1 >=1.3.
That fluxes disconnected agent 9 is mainly composed of rosin, can be common rosin, maleic rosin, hydrogenated rosin etc. or above-mentioned several
Plant the mixture of rosin.
As it is shown in fig. 7, by materials such as airless spraying organic matter, inorganic matters in disconnected agent 9 of fluxing above disconnected agent 9 of fluxing
Surface forms an insulation crust 10, and described insulation crust 10 is a confined space.This sprayed on material can be Parylene
Series material.
Claims (5)
1. a temperature fuse, for the Thermal Cutoffs element of mancarried electronic aid battery, it is characterised in that fusing-off temperature
Between 70～110 DEG C, at least include:
One, with the electrically-conductive backing plate of electrode, described electrically-conductive backing plate has four weld zones of separation, with in described electrically-conductive backing plate
Heart line is symmetry axis, each symmetrical two weld zones, and one is adjacent with symmetry axis, an outside being located at electrically-conductive backing plate,
These two weld zones are conducting state, make electrically-conductive backing plate both sides respectively form a conducting district；And for insulation between two conducting districts
State；
A pair metallic conduction part, the respectively first metallic conduction part and the second metallic conduction part, described first metallic conduction part and
Second metallic conduction part is respectively welded at the weld zone, two outsides of described electrically-conductive backing plate；
One fusable links, is the alloy at least including bismuth, indium, tin, is arranged on described two weld zones adjacent with symmetry axis,
Thickness is 0.1mm～0.4mm；
One fluxes disconnected agent, is arranged in described fusable links, directly contacts with described fusable links, the pair of metallic conduction part；
One insulation crust, the disconnected agent of fluxing of described insulation crust is enclosed in electrically-conductive backing plate upper surface.
Temperature fuse the most according to claim 1, it is characterised in that the main material of described electrically-conductive backing plate is non-conductive material
Material, for ceramic material and/or polymeric material.
Temperature fuse the most according to claim 1, it is characterised in that described four weld zones are good conductor material, for
A kind of in copper, silver, gold or its more than one mixture.
Temperature fuse the most according to claim 1, it is characterised in that the area of the described weld zone adjacent with symmetry axis
It is multiplied by the accommodated alloy volume V2 that the spatial altitude above it draws, is greater than the cumulative volume V1 of fusable links.
5. the manufacture method according to the temperature fuse described in any one of Claims 1-4, it is characterised in that sequentially
Comprise the steps:
Make with the electrically-conductive backing plate of four weld zones, four weld zones from left to right be the first weld zone, the second weld zone,
3rd weld zone and the 4th weld zone, described first weld zone and the second weld zone are a conducting district, described 3rd weld zone
It is that another turns on district with the 4th weld zone；
On described electrically-conductive backing plate, it is positioned at the first weld zone outside electrically-conductive backing plate two conducting district and the 4th weld zone difference
Weld a metallic conduction part；
On described electrically-conductive backing plate, it is positioned at the second weld zone inside electrically-conductive backing plate two conducting district and the 3rd welding interval and sets
Put a fusable links；
Disconnected agent of fluxing is covered on above-mentioned fusable links surface；
Form a confined space that disconnected agent of fluxing is encapsulated by spraying method in the outside of disconnected agent of fluxing, become
One insulation crust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647640.7A CN103594300B (en) | 2013-12-06 | 2013-12-06 | A kind of temperature fuse and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647640.7A CN103594300B (en) | 2013-12-06 | 2013-12-06 | A kind of temperature fuse and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103594300A CN103594300A (en) | 2014-02-19 |
| CN103594300B true CN103594300B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310647640.7A Active CN103594300B (en) | 2013-12-06 | 2013-12-06 | A kind of temperature fuse and manufacture method thereof |
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| Country | Link |
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| CN (1) | CN103594300B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373681A (en) * | 2007-08-20 | 2009-02-25 | 内桥艾斯泰克股份有限公司 | Temperature fuse |
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2013
- 2013-12-06 CN CN201310647640.7A patent/CN103594300B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373681A (en) * | 2007-08-20 | 2009-02-25 | 内桥艾斯泰克股份有限公司 | Temperature fuse |
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| Publication number | Publication date |
|---|---|
| CN103594300A (en) | 2014-02-19 |
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Effective date of registration: 20180514 Address after: No. 710 715-Z, Siping Road, Shanghai Co-patentee after: Jiangxi Sari Microelectronic Technology Co.,Ltd. Patentee after: Shanghai Changyuan Wayon Circuit Protection Co.,Ltd. Address before: No. 1001, No. seven, Shi Wan, Shanghai, Pudong New Area, Shanghai Patentee before: Shanghai Changyuan Wayon Circuit Protection Co.,Ltd. |
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Address after: 200080 Room 806, 8 / F, 125 Liuying Road, Hongkou District, Shanghai Patentee after: Shanghai Wei'an Electronic Co.,Ltd. Patentee after: Jiangxi Sari Microelectronic Technology Co.,Ltd. Address before: No. 710 715-Z, Siping Road, Shanghai Patentee before: Shanghai Changyuan Wayon Circuit Protection Co.,Ltd. Patentee before: Jiangxi Sari Microelectronic Technology Co.,Ltd. |
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Effective date of registration: 20220830 Address after: 330000 room 409, 4th floor, No. 399, rulehu, Zhiguan District, Ganjiang new area, Nanchang City, Jiangxi Province Patentee after: Jiangxi Sari Microelectronic Technology Co.,Ltd. Address before: 200080 Room 806, 8 / F, 125 Liuying Road, Hongkou District, Shanghai Patentee before: Shanghai Wei'an Electronic Co.,Ltd. Patentee before: Jiangxi Sari Microelectronic Technology Co.,Ltd. |