CN104347312A - Protective element - Google Patents
Protective element Download PDFInfo
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- CN104347312A CN104347312A CN201410359813.XA CN201410359813A CN104347312A CN 104347312 A CN104347312 A CN 104347312A CN 201410359813 A CN201410359813 A CN 201410359813A CN 104347312 A CN104347312 A CN 104347312A
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- alloy
- melting
- low
- stratiform
- point metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a protective element which can more reliably sense abnormal temperatures to perform operations and is good in shock resistance and environment resistance. The protective element is provided with (i) a layered element containing an insulation resin; (ii) at least one low-melting-point metal part which penetrates the layered element; and (iii) a pair of layered metal electrodes which are arranged on two main surfaces of the layered element and are electrically connected through the low-melting-point metal part.
Description
Technical field
The present invention relates to a kind of protection component.
Background technology
As the protection component of the situation incision power-off stream at lithium rechargeable battery abnormal heating; serviceability temperature fuse element, PTC (positive temperature coefficient, positive temperature coefficient) element and the proterctive equipment (patent documentation 1) etc. that bimetallic element and PTC element in parallel are formed by connecting.Wherein, such as flowing big current (such as; in 30A) such purposes; such as when the protection of the lithium ion polymer secondary cell for conveying machines such as electric bicycles, the proterctive equipment using the large PTC element of size or bimetallic element and PTC element in parallel are formed by connecting.
At first technical literature
Patent documentation
Patent documentation 1: No. WO2008/114650, International Publication
The problem that invention will solve
In above-mentioned protection component, if the position that the setting position of temperature fuse element produces away from abnormal heating, be then difficult to provide rapid and protect reliably.Therefore, temperature fuse element needs to be arranged on can the position of rapidly and reliably response abnormality heating, and when the position that abnormal heating produces is relative broad range, then may not easily determine such setting position.
Polymer PTC device and ceramic PTC element is there is in PTC element.Wherein, the trip temperature of polymer PTC device is higher, at the abnormal heating compared with low temperature, such as, when the temperature of abnormal heating is 80 DEG C, then may not easily provide suitable protection.In addition, ceramic PTC element anti-impact force is more weak, and especially, the large element of flat pattern easily produces due to impact and breaks.
Although the proterctive equipment that bimetallic element and PTC element in parallel are formed by connecting can be increased maintenance electric current; but owing to having mechanical contact; therefore easily produce the unfavorable condition caused due to environment, moment that is bad or that cause due to impact such as the contact such as caused because corrosion waits ruptures.
Summary of the invention
Therefore, the problem that the present invention will solve is, provides one can more reliably perception abnormal temperature performing an action, and resistance to impact and environment resistant good protection component.
In the 1st purport, a kind of protection component is provided, has:
(i) stratiform key element, it comprises insulative resin;
(ii) at least 1 low-melting-point metal parts, its through stratiform key element; And
(iii) metal electrode of a pair stratiform, it is positioned at two first type surfaces of stratiform key element, and is electrically connected by low-melting-point metal parts.
In the 2nd purport, a kind of secondary cell is provided, it is characterized in that, there is above-mentioned protection component.
Invention effect
Protection component of the present invention causes surface area to become large owing to using the metal electrode of stratiform, therefore, it is possible to more reliably obtain the heat caused due to abnormal heating, and can provide and protect more reliably.In addition, because protection component of the present invention does not have mechanical contact, the moment fracture that the contact that causes because corrosion waits is bad and cause due to impact can not therefore be produced, environment resistant and resistance to impact is good.
Accompanying drawing explanation
Fig. 1 schematically shows the stereogram of the protection component of a mode of the present invention.
Fig. 2 schematically shows along relative to the cutaway view in face of plane orthogonal of straight line x-x of protection component comprising Fig. 1.
Fig. 3 and Fig. 2 similarly, schematically shows the cutaway view of the protection component of another way.
Fig. 4 and Fig. 2 similarly, schematically shows the cutaway view of the protection component of other modes another.
Fig. 5 schematically shows the stereogram of a mode of the stratiform key element of protection component of the present invention.
Fig. 6 schematically shows the stereogram of the another way of the stratiform key element of protection component of the present invention.
Embodiment
Below, with reference to accompanying drawing, protection component of the present invention is described in detail.But protection component of the present invention is not limited to illustrated mode.
Fig. 1 schematically shows the stereogram of the protection component of a mode of the present invention, and Fig. 2 schematically shows along relative to the cutaway view in face of plane orthogonal of straight line x-x comprising the protection component shown in Fig. 1.Protection component 1 of the present invention has: the low-melting-point metal parts 4 of stratiform key element 2, through stratiform key element and cover the metal electrode 6 of a pair stratiform of above-mentioned part.
Protection component 1 of the present invention has the stratiform key element 2 comprising insulative resin.
In a mode, stratiform key element 2 is formed (below, the stratiform key element formed by this insulative resin being called " stratiform resinous principle ") by insulative resin.In this approach, time usual, electric current, from a metal electrode 6, flows to another metal electrode 6 by low-melting-point metal parts 4.When abnormal, the heat around produced is sent to low-melting-point metal parts 4 by metal electrode 6, and low-melting-point metal parts 4 fuse, thus electric current is cut off.Here, so-called " time usual " refers to and does not produce abnormal heating, and the temperature of protection component, the circuit/machine that should protect and its surrounding environment is below the temperature of regulation.So-called " time abnormal " refers to generation abnormal heating, and the circuit/machine that should protect or the temperature around it are more than the temperature of regulation, such as can produce unfavorable condition temperature more than.
As long as the resin that the insulative resin forming stratiform key element has electrical insulating property is just passable, be not particularly limited, comprise such as thermoplastic resin and heat-curing resin, specifically, polyethylene, polypropylene, Merlon, fluorine resin, ABS (acrylonitrile-butadiene-styrene (ABS)) resin, polycarbonate-ABS alloy resin, resin such as PBT (polybutylene terephthalate (PBT)) resin, synthetic rubber etc. is comprised.This insulative resin preferably has the decomposition temperature higher than the operating temperature of protection component of the present invention and the resin of fusing point.Here, so-called " operating temperature ", refers to that protection component performs an action and cuts off the minimum temperature of electric current.By using, there is the decomposition temperature higher than the operating temperature of protection component and dystectic insulative resin; thus when producing abnormal heating; due to before the decomposition temperature reaching insulative resin or fusing point; protection component performs an action and cuts off electric current, therefore, it is possible to prevent decomposition and the melting of insulative resin.In addition, because protection component of the present invention is for the purpose of the action due to abnormal heating, therefore from the easy viewpoint propagating heat to low-melting-point metal parts, insulative resin is preferably the high resin of thermal conductivity.As preferred insulative resin, for example there are such as polyethylene, Kynoar, polypropylene, phenolic aldehyde system resin etc.
In another way, stratiform key element 2 is formed (below, the stratiform key element formed by this PTC constituent being called " stratiform PTC key element ") by constituent, the namely so-called PTC constituent comprising conductive filling in insulative resin.By using stratiform PTC key element to be used as stratiform key element, thus when low-melting-point metal parts fuse, owing to flowing through the current transfer of low-melting-point metal parts to stratiform PTC key element, therefore, it is possible to suppress the generation along with the electric arc of the fusing of low-melting-point metal parts.That is, the proof voltage of protection component can be improved.
Above-mentioned PTC constituent be such as comprise conductive filling polymeric material (such as; the high density polyethylene (HDPE) of carbon black particulate matter is comprised) with dispersity; and for representing the polymer composition of ptc characteristics; as long as self material known; and the material that can be used in protection component of the present invention is just passable, is not particularly limited.
The operating temperature of above-mentioned stratiform PTC key element can be preferably the temperature higher than the fusing point of the low-melting-point metal forming low-melting-point metal parts 4, such as, be the temperature of the temperature of high 5 DEG C, the temperature of high 10 DEG C or high 20 DEG C.By being set to such operating temperature, thus when low-melting-point metal parts fuse, the electric current flowing through low-melting-point metal parts can be made more reliably to transfer to stratiform PTC key element.Here, so-called " operating temperature " refers to that stratiform PTC key element performs an action the minimum temperature of (tripping operation).
Further, in another way, stratiform key element 2 also can be the combination of stratiform resinous principle and stratiform PTC key element.The size of stratiform resinous principle and stratiform PTC key element, shape and configuration are not specially limited, can according to the easiness manufactured, by the kind of PTC constituent of the voltage/current of load, use, the kind of low-melting-point metal etc. because usually suitably determining.Such as, as shown in Figure 5, stratiform resinous principle 8 and stratiform PTC key element 10 also can be adjacent to existence.In addition, as shown in Figure 6, stratiform PTC key element 10 also can be arranged by stratiform resinous principle 8 with surrounding.In addition, in Fig. 5 and 6, eliminate pass through openings portion to simplify.Although in illustrated mode, stratiform PTC key element 10 and stratiform resinous principle 8 are touched configuration, are not limited in this, also can isolation configuration.
As long as the size of the form thickness direction of above-mentioned stratiform key element less than other sizes (such as tabular or lamellar morphology) is just passable, be not particularly limited.Specifically, more than 3 are preferably, such as 5 ~ 100 relative to the length of thickness or the ratio of width.The flat shape of stratiform key element (from directly over stratiform key element shape, or the section shape in the direction vertical with the thickness direction of stratiform key element) be not specially limited, also can be such as the shape such as circle, square, rectangle, rhombus, ring-type.The flat shape of this stratiform key element is preferably identical in fact with the flat shape of the machine that should protect, such as secondary battery cell.Like this; by making the flat shape of stratiform key element consistent in fact with the flat shape of the machine that should protect; thus when producing abnormal heating in the machine that should protect; can more rapidly and reliably obtain heat; and be sent to low-melting-point metal parts, therefore, it is possible to provide more rapidly and protect reliably.
Although the thickness of above-mentioned stratiform key element is not specially limited, but in order to ensure the insulation between pair of electrodes during exception, the fusing of low-melting-point metal parts is made to become easy, then be preferably more than 1mm, and in order to promptly conduct heat to low-melting-point metal parts entirety when exception, in addition, from the view point of miniaturization, then below 10mm is preferably.Such as, the thickness of stratiform key element is 1 ~ 8mm, is preferably the scope of 1 ~ 6mm.
Above-mentioned stratiform key element at least has a pass through openings portion, this pass through openings portion of low-melting-point metal member passes.Deposit in case at both stratiform resinous principle and stratiform PTC key element, this pass through openings portion may reside in any one of stratiform resinous principle and stratiform PTC key element, also can both exist.This pass through openings portion extends and through stratiform key element along the thickness direction of stratiform key element, and the section shape in the direction vertical with this thickness direction is not particularly limited, and can be such as circle, square, rhombus, rectangle, ellipse.The quantity in pass through openings portion suitably can be selected according to the quantity of the low-melting-point metal parts used.
Protection component 1 of the present invention has the pass through openings portion of through above-mentioned stratiform key element 2, and the low-melting-point metal parts 4 be electrically connected with the metal electrode 6 of a pair stratiform respectively.
The section shape of the low-melting-point metal parts in the direction vertical with the thickness direction of stratiform key element is not specially limited, such as, can be circle, square, rhombus, rectangle, ellipse or circular.
The thickness (thickness of the thickness direction of stratiform key element) of low-melting-point metal parts is identical with the thickness of stratiform key element in fact.
Although in the mode shown in Fig. 2, the quantity of above-mentioned low-melting-point metal parts is one, is not limited in this, also can be more than 2, such as 2,3,4 or more than.By increasing the quantity of low-melting-point metal parts, the maintenance electric current of protection component can be increased.Therefore, the quantity of low-melting-point metal parts suitably can be selected according to the degree of maintenance electric current required in protection component.Here, so-called " maintenance electric current " refers to the maximum current that can flow through when protection component of the present invention does not perform an action.
When there are multiple low-melting-point metal parts, they can configure with contacting with each other as shown in Figure 3, or, also can configure as shown in Figure 4 mutually isolatedly.
When being configured with contacting with each other by low-melting-point metal parts, when from the direction vertical relative to main of stratiform key element, these can be configured to linearity, or also can be configured to circumferential, lightning shape, waveform or concave-convex.In this case, the low-melting-point metal parts contacted with each other can be regarded as larger low-melting-point metal parts.
When being mutually isolated by low-melting-point metal component configuration, preferably in stratiform key element, configure low-melting-point metal parts equably.Here, so-called " equivalent arrangements " refers to that the configuration of low-melting-point metal parts has symmetry axis or symmetric points.Symmetry axis or the symmetric points of the symmetry axis of the configuration of preferred low-melting-point metal parts or symmetric points and the first type surface of stratiform key element are consistent.Such as, when being configured point-blank by low-melting-point metal parts, it is equal to be configured to adjacent each low-melting-point metal parts distance each other, and there are the low-melting-point metal parts of equal number in the both sides of the center line of the first type surface of stratiform key element.In addition, when being circle-shaped by low-melting-point metal component configuration, can be configured to light from the center of the first type surface of stratiform key element equidistant, angularly, such as, there are low-melting-point metal parts every 45 °.In addition, also the configuration of one or more straight line and one or more circle-shaped configuration combination can be configured.
Above-mentioned low-melting-point metal parts are made up of low-melting-point metal.As this low-melting-point metal, be not particularly limited, for example there are such as: Sn, Bi-Cd alloy, Bi-Pb alloy, Sn-Ag alloy, Sn-Ag-Bi-In alloy, Sn-Ag-Cu alloy, Sn-Ag-Cu-Bi alloy, Sn-Ag-Cu-Bi-In alloy, Sn-Ag-Cu-Co-Ni alloy, Sn-Ag-Cu-Sb alloy, Sn-Ag-Ni-Co alloy, Sn-Bi alloy, Sn-Bi-Ag alloy, Sn-Bi-Cd alloy, Sn-Bi-In alloy, Sn-Bi-Pb alloy, Sn-Bi-Pb-Cd alloy, Sn-Bi-Pb-Cd-In alloy, Sn-Bi-Pb-In alloy, Sn-Bi-Zn alloy, Sn-Cu alloy, Sn-Cu-Ni alloy, Sn-Cu-Ni-P-Ge alloy, Sn-Cd alloy, Sn-In alloy, Sn-Pb alloy, Sn-Pb-Cd alloy, Sn-Zn alloy and Sn-Sb alloy.
The operating temperature of protection component of the present invention is identical in fact with the fusing point of the low-melting-point metal forming low-melting-point metal parts.Therefore, by adjusting the fusing point of low-melting-point metal, the operating temperature of protection component can be changed.Such as, if the fusing point of low-melting-point metal is 80 DEG C, even if then for as the temperature of 80 DEG C of abnormal heating compared with low temperature, also can protection be provided.The fusing point of low-melting-point metal by changing the metal or alloy that use, suitably can adjust.
In a preferred embodiment, low-melting-point metal parts have the fusing point of 80 DEG C ~ 90 DEG C.As this low-melting-point metal parts with the fusing point of 80 DEG C ~ 90 DEG C, although without particular limitation of, for example there are Sn-Bi-Pb alloy, Sn-Bi-Pb-Cd alloy, Sn-Bi-Pb-Cd-In alloy, Sn-Bi-In alloy etc.
In addition, low-melting-point metal parts also can comprise the flux of its fusing auxiliary, or coexist in the pass through openings portion of stratiform key element and flux.Such as, in pass through openings portion, the low-melting-point metal parts of more than 1 or 1 and the flux portion of more than 1 or 1 can be configured with adjoining each other.
Protection component 1 of the present invention has the metal electrode 6 of a pair stratiform; the metal electrode 6 of this pair stratiform be configured to 2 first type surfaces covering stratiform key element 2 at least partially and the low-melting-point metal parts 4 exposed from this first type surface, and to be electrically connected to each other by low-melting-point metal parts 4.
The metal material forming above-mentioned metal electrode is not particularly limited, Fe can be used or comprise the nonferrous metal of noble metal and base metal, specifically, Ni, Cu, Sn, Al, Ti, Cr, Mn, Zn, Ag, Au, W, Pt, Pb, Mo, Be etc. or their alloy can be used.Wherein, from thermal conductivity high this point, preferred Au, Ag, Cu and Al.
The thickness of above-mentioned metal electrode is not specially limited, can be such as tabular or foil-like, but in order to heat is sent to low-melting-point metal parts efficiently when exception, then preferably can guarantee the thermal capacity of q.s, do not make the thickness that heat loss rises in the temperature of electrode, such as 0.1 ~ 2mm.
Above-mentioned metal electrode can cover a part for the first type surface of stratiform key element, or also can cover all.Due to heat can be obtained more reliably from relative broad range when exception, therefore preferably cover the whole of the first type surface of stratiform key element.In addition, metal electrode also can extend than the outer rim of stratiform key element more laterally.
The shape on the surface (opposed faces in the face connected with the main face of stratiform key element) of above-mentioned metal electrode is not specially limited; but from the viewpoint preferably flat shape of the easiness manufactured; in addition; from the view point of easily obtaining heat when exception; preferably with the face arranging protection component, the shape on the surface of the machine such as should protected is consistent.
Electrical connection between above-mentioned low-melting-point metal parts and metal electrode is not particularly limited, such as, can by pressure welding, deposition, based on the joint of plating or carry out based on the bonding etc. of conductive adhesive material etc.
In illustrated mode, pair of metal electrodes is configured to directly contact on the first type surface of stratiform key element, but is not limited only to this, as long as be electrically connected with low-melting-point metal parts, also can pass through miscellaneous part.Such as, also can configure thin metal layer on the first type surface of stratiform key element, and configure metal electrode thereon.
Protection component of the present invention can be set directly in the machine that should protect.But, such as, when the shape of the shape of the installation surface of the machine that should protect and the installation surface of protection component is inconsistent, also can be arranged by the good resin of heat conductivity, such as silicones.
Protection component of the present invention can be manufactured by various method, and those skilled in the art according to the structure of protection component of the present invention, can understand its manufacture method.Such as, protection component of the present invention can manufacture as follows.First, prepare the thin plate of insulative resin, bore a hole as the size that specifies and shape, and the pass through openings portion of number desired by formation and shape.Low-melting-point metal by melting flows into pass through openings portion, and the wall along pass through openings portion forms the layer of low-melting-point metal, thus forms low-melting-point metal parts.Then, cover the first type surface of stratiform key element and the mode of low-melting-point metal parts according to by the metal electrode of stratiform, use such as conductive adhesive etc. to be fitted in the surface of stratiform key element, thus protection component of the present invention can be manufactured.According to desired, after a metal electrode of having fitted, the flux of assisting the fusing of low-melting-point metal parts can be injected pass through openings portion, another metal electrode of fitting is closed.
Protection component of the present invention can more reliably perception abnormal temperature performing an action; further; owing to not having mechanical contact; the moment fracture that the contact caused because corrosion waits is bad and cause due to impact can not be produced; therefore various electronics/electricapparatus can be applicable to rightly, such as secondary cell.Therefore, the present invention also can provide to have electronics/electricapparatus that protection component of the present invention is feature, such as secondary cell.
Utilizability in industry
Because the maintenance electric current of proterctive equipment of the present invention is large, and can generate heat and perform an action by response abnormality preferably, therefore, it is possible to utilize rightly as the protection component of the lithium rechargeable battery of such as high power capacity.
Symbol description
1 ... protection component
2 ... stratiform key element
4 ... low-melting-point metal parts
6 ... metal electrode
8 ... stratiform resinous principle
10 ... stratiform PTC key element
Claims (14)
1. a protection component, has:
(i) stratiform key element, it comprises insulative resin;
(ii) at least 1 low-melting-point metal parts, its through stratiform key element; And
(iii) metal electrode of a pair stratiform, it is positioned at two first type surfaces of stratiform key element, and is electrically connected by low-melting-point metal parts.
2. protection component according to claim 1, is characterized in that,
Part or all of stratiform key element is formed by PTC constituent.
3. the protection component according to claims 1 or 2, is characterized in that,
There are more than 2 low-melting-point metal parts.
4. protection component according to claim 3, is characterized in that,
More than 2 low-melting-point metal parts are configured to contact with each other.
5. protection component according to claim 3, is characterized in that,
More than 2 low-melting-point metal parts are configured to mutually isolated.
6. protection component according to claim 5, is characterized in that,
More than 2 low-melting-point metal parts are configured equably.
7. the protection component according to any one of claim 1 ~ 6, is characterized in that,
Low-melting-point metal parts are by from by Sn, Bi-Cd alloy, Bi-Pb alloy, Sn-Ag alloy, Sn-Ag-Bi-In alloy, Sn-Ag-Cu alloy, Sn-Ag-Cu-Bi alloy, Sn-Ag-Cu-Bi-In alloy, Sn-Ag-Cu-Co-Ni alloy, Sn-Ag-Cu-Sb alloy, Sn-Ag-Ni-Co alloy, Sn-Bi alloy, Sn-Bi-Ag alloy, Sn-Bi-Cd alloy, Sn-Bi-In alloy, Sn-Bi-Pb alloy, Sn-Bi-Pb-Cd alloy, Sn-Bi-Pb-Cd-In alloy, Sn-Bi-Pb-In alloy, Sn-Bi-Zn alloy, Sn-Cu alloy, Sn-Cu-Ni alloy, Sn-Cu-Ni-P-Ge alloy, Sn-Cd alloy, Sn-In alloy, Sn-Pb alloy, Sn-Pb-Cd alloy, the low-melting-point metal of more than a kind or a kind selected in the group that Sn-Zn alloy and Sn-Sb alloy are formed and being formed.
8. protection component according to claim 7, is characterized in that,
Low-melting-point metal has the fusing point of 80 ~ 90 DEG C.
9. protection component according to claim 8, is characterized in that,
Low-melting-point metal is the metal of more than a kind or a kind of Election selected from the Qun be made up of Sn-Bi-Pb alloy, Sn-Bi-Pb-Cd alloy, Sn-Bi-Pb-Cd-In alloy and Sn-Bi-In alloy.
10. the protection component according to any one of claim 1 ~ 9, is characterized in that,
Metal electrode is formed by the metal of more than a kind or a kind selected from the group be made up of the nonferrous metal comprising noble metal and base metal.
11. protection components according to claim 10, is characterized in that,
Nonferrous metal is selected from by the group that Ni, Cu, Sn, Al, Ti, Cr, Mn, Zn, Ag, Au, W, Pt, Pb, Mo and Be are formed.
12. protection components according to any one of claim 1 ~ 11, is characterized in that,
Insulative resin is the resin of more than a kind or a kind that selects from the group be made up of thermoplastic resin and heat-curing resin.
13. protection components according to any one of claim 1 ~ 12, is characterized in that,
Insulative resin is the resin of more than a kind or a kind that selects from the group be made up of polyethylene, Kynoar and polypropylene.
14. 1 kinds of secondary cells, have:
Protection component according to any one of claim 1 ~ 13.
Applications Claiming Priority (2)
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JP2013156826 | 2013-07-29 | ||
JP2013-156826 | 2013-07-29 |
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CN201410359813.XA Pending CN104347312A (en) | 2013-07-29 | 2014-07-25 | Protective element |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109243667A (en) * | 2018-08-17 | 2019-01-18 | 上海长园维安电子线路保护有限公司 | Polymer-based conducing composite material and overflow protecting element |
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CN103503109A (en) * | 2011-03-03 | 2014-01-08 | 泰科电子日本合同会社 | Protective element |
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- 2014-07-29 JP JP2014153858A patent/JP6352095B2/en active Active
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EP0016467A1 (en) * | 1979-03-21 | 1980-10-01 | Kearney-National (Canada) Ltd. | Electric fuses employing composite metal fuse elements |
CN1748279A (en) * | 2003-02-05 | 2006-03-15 | 索尼化学株式会社 | Protective device |
CN1551276A (en) * | 2003-04-14 | 2004-12-01 | 釜屋电机株式会社 | Chip fuse box |
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JP6352095B2 (en) | 2018-07-04 |
JP2015046390A (en) | 2015-03-12 |
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