CN109923625A - Thermal protection metal-oxide varistor - Google Patents
Thermal protection metal-oxide varistor Download PDFInfo
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- CN109923625A CN109923625A CN201780018400.7A CN201780018400A CN109923625A CN 109923625 A CN109923625 A CN 109923625A CN 201780018400 A CN201780018400 A CN 201780018400A CN 109923625 A CN109923625 A CN 109923625A
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- Prior art keywords
- terminal
- shell
- spring element
- pedestal
- thermode
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
Abstract
The TPV equipment of this paper may include the thermode being arranged along piezoresistor ontology.First lead may be electrically connected to the first side of piezoresistor ontology, and the second lead may be electrically connected to thermode.TPV equipment can also include the terminal assemblies for being directly coupled to second side of piezoresistor ontology, which includes the shell for including side wall and pedestal, and split shed is provided by pedestal.Terminal assemblies can also include being partially disposed at the intracorporal spring element of shell, and the interior electrode being arranged between thermode and the pedestal of shell.Interior electrode may include the terminal tab extended through the opening in pedestal, wherein when hot link material is lower than fusing point, terminal tab maintains the physical contact with spring element via hot link material.
Description
Cross reference to related applications
This application claims entitled " the Thermally Protected Metal submitted on October 13rd, 2017
The priority of Patent Cooperation Treaty (PCT) the application PCT/CN2017/106133 of Oxide Varistor ", this application is by drawing
Be integrally incorporated herein.
Technical field
The disclosure relates in general to the influence for protecting Electrical and Electronic circuit and equipment from surge, and more specific
Ground is related to the heat protection pressure sensitive resistor (varistor) that there is thermal actuation to disconnect.
Background technique
Overvoltage protective device is for protecting electronic circuit and component from the damage as caused by overvoltage fault condition.
These overvoltage protective devices may include the metal-oxide varistor being connected between circuit and ground wire to be protected
(MOV).MOV, which has, allows them to be used to protect these circuits from specific currents-voltage characteristic of catastrophic voltage surge.It is logical
Often, these equipment utilizations are melted under abnormality to form the spring element of open circuit.Particularly, when being applied more than mark to equipment
When the voltage of title or threshold voltage, electric current flows through MOV, which generates heat.This causes linkage element to melt.Once link is molten
Change, open circuit will be generated, it is on fire that this prevent MOV.
But these existing electric circuit protection equipments do not provide the high efficiencies of heat transfer from MOV to spring element, to prolong
The late response time, and MOV is made to be subjected to periodical transient voltage and overvoltage condition, this can apply further electric stress.By
In these stress, MOV often degenerates over time, so as to cause higher leakage current.Terminate in its electrical endurance
When, MOV often disastrously breaks down.There are many forms for failure approaching one's end.The fragmentation as caused by excessively high transient voltage
Caused failure is a type of failure approaching one's end.Another fault type is excessively electric by the degeneration of MOV and/or lasting exception
Thermal runaway caused by press strip part.Thermal cutoff is used for partially due to the case where above-mentioned electric stress leads to sustained overvoltage or thermal runaway
Lower opening equipment.It is expected that making thermal cutoff mechanism very close to MOV disk, so that thermal response time is as fast as possible.Therefore, thermal cutoff
The purpose of MOV is that relatively benign failure is provided when being subjected to causing the condition of thermal runaway.
Although there is heat protection pressure sensitive resistor available at present, it is currently available that thermal cutoff piezoresistor includes complexity
Component and manufacturing cost it is high.Known heat protection pressure sensitive resistor scheme has another disadvantage that they are once triggering heat
Disconnect the disposable component that must be just replaced.Since thermal cutoff is generally enclosed in shell, maintenance equipment
It is personal to be possibly readily determined when thermal cutoff is triggered and when is replaced.
Therefore, a kind of piezoresistor efficiently constructed that can be easy to carry out maintenance and service is currently needed, for protecting
Sensitive circuit and equipment are protected from the influence of abnormal overvoltage transition.It is based on these and other Consideration, provides and works as
Preceding improvement.
Summary of the invention
The TPV equipment of this paper may include the thermode being arranged along piezoresistor ontology.First lead can be electrically connected
It is connected to the first side of piezoresistor ontology, and the second lead may be electrically connected to thermode.TPV equipment can also include straight
The terminal assemblies for being coupled to second side of piezoresistor ontology are connect, terminal assemblies include the shell for including side wall and pedestal,
Split shed is provided by pedestal.Terminal assemblies can also include being partially disposed at the intracorporal spring element of shell；And setting exists
Interior electrode between thermode and the pedestal of shell.Interior electrode may include the terminal tab for extending through the opening in pedestal,
Wherein when hot link material is lower than fusing point, terminal tab maintains the physical contact with spring element via hot link material.
In a kind of scheme according to the disclosure, a kind of heat protection pressure sensitive resistor (TPV) equipment may include pressure-sensitive electricity
Device ontology is hindered, which has the first side and the thermode along second side setting opposite with the first side,
Wherein first lead is electrically connected to the first side and the second lead is electrically connected to thermode.TPV equipment can also include direct coupling
The terminal assemblies of second side of piezoresistor ontology are closed, terminal assemblies include the shell with side wall and pedestal, wherein opening
Mouth provides in pedestal；And with the spring element that the intracorporal first end of shell with the second end for the side wall for being coupled to shell is arranged in
Part.Terminal assemblies can also include the interior electrode being arranged between thermode and the pedestal of shell, and interior electrode includes extending through
The terminal tab of opening in pedestal, wherein terminal tab includes operable third terminal, when hot link material is lower than molten
When point, the direct physical contact with the first end of spring element is maintained via the hot link material being arranged along terminal tab.
In another scheme according to the disclosure, a kind of thermometal oxide varistor (TMOV) component be can wrap
Piezoresistor ontology is included, which has the first side and along second side setting opposite with the first side
Thermode, wherein first lead is electrically connected to the first side, and the second lead is electrically connected to thermode.TMOV component can also wrap
The terminal assemblies for being directly coupled to second side of piezoresistor ontology are included, terminal assemblies include the shell with side wall and pedestal
Body, split shed provide in pedestal.Terminal assemblies can also include having setting in the intracorporal first end of shell and being coupled to shell
The spring element of the second end of the side wall of body, and the interior electrode being arranged between thermode and the pedestal of shell, interior electrode packet
The terminal tab for extending through the opening in pedestal is included, wherein terminal tab includes operable third terminal, to work as hot link
When material is lower than fusing point, the direct object with the first end of spring element is maintained via the hot link material being arranged along terminal tab
Reason contact.
In another scheme according to the disclosure, a kind of thermometal oxide varistor (TMOV) component be can wrap
Piezoresistor ontology is included, which has the first side and along second side setting opposite with the first side
Ceramic metallized layer, wherein first lead is electrically connected to the first side, and the second lead is electrically connected to ceramic metallized layer.TMOV
Component can also include the terminal assemblies for being coupled to second side of piezoresistor ontology, and terminal assemblies include shell, shell packet
Side wall and pedestal are included, wherein pedestal is directly coupled to ceramic metallized layer, and its split shed provides in pedestal.Terminal assemblies
It can also include with the spring element that the intracorporal first end of shell with the second end for the side wall for being coupled to shell is arranged in, Yi Jishe
The interior electrode between thermode and the pedestal of shell is set, interior electrode includes the terminal tab for extending through the opening in pedestal,
Wherein terminal tab includes operable third terminal, set via along terminal tab when hot link material is lower than fusing point
The hot link material set maintains the direct physical contact with the first end of spring element.
Detailed description of the invention
Drawing illustration is up to the present disclosed to be practical application its principle and the exemplary side of embodiment that designs
Case, in which:
Fig. 1 depicts the circuit diagram according to an embodiment of the present disclosure including TPV equipment；
Fig. 2-5 depicts TPV equipment according to an embodiment of the present disclosure；
Fig. 6-9 depicts the terminal assemblies of the TPV equipment of Fig. 2-5 according to an embodiment of the present disclosure；
Figure 10 depicts the spring element of the TPV equipment of Fig. 2-5 according to an embodiment of the present disclosure；
Figure 11 depicts TPV equipment according to an embodiment of the present disclosure；
Figure 12 depicts the terminal assemblies of the TPV equipment of Figure 11 according to the exemplary embodiment of the disclosure；
Figure 13-15 depicts TPV equipment according to an embodiment of the present disclosure；
Figure 16-17 depicts the terminal assemblies of the TPV equipment of Figure 13-15 according to an embodiment of the present disclosure；
Figure 18 depicts the spring element of the TPV equipment of Figure 13-15 according to an embodiment of the present disclosure；
Figure 19-21 depicts TPV equipment according to an embodiment of the present disclosure；
Figure 22 depicts the spring element of the TPV equipment of Figure 19-21 according to an embodiment of the present disclosure；
Figure 23 depicts the exploded view of terminal assemblies according to an embodiment of the present disclosure；
Figure 24 depicts the perspective view of the terminal assemblies of Figure 23 according to an embodiment of the present disclosure.
Figure 25 depicts the perspective view of TPV equipment according to an embodiment of the present disclosure；And
Figure 26 depicts the exploded view of the terminal assemblies of the TPV equipment of Figure 25 according to an embodiment of the present disclosure.
The drawings are not necessarily drawn to scale.Attached drawing is only to indicate, it is not intended that describes the design parameter of the disclosure.Attached drawing
It is intended to describe the exemplary embodiments of the disclosure, and therefore should not be regarded as limitation range.In the accompanying drawings, it is identically numbered table
Show identical element.
In addition, for clarity, certain elements in some figures may be omitted or be not on scale.
In addition, for the sake of clarity, some labels may be omitted in certain attached drawings.
Specific embodiment
It will be described more fully hereinafter with reference to the accompanying drawings in accordance with an embodiment of the present disclosure now.System/circuit can be with
Many different forms are implemented, and should not be construed as being limited to embodiment set forth herein.On the contrary, providing these embodiments
It is and to fully communicate to those skilled in the art the range of system and method to keep the disclosure thorough and complete.
For convenience and clarity, herein will use such as " top ", " bottom ", " top ", " lower part ", " vertical ",
The term of "horizontal", " transverse direction " and " longitudinal direction " describes the staggered relatively and directions of various parts and its component part.The art
Language will include specifically mentioned word, its derivative words and the similar word introduced.
As it is used herein, narration and front have the element of word "a" or "an" or operation should in the singular
It is understood to be not excluded for multiple element or operation, unless having enunciated this exclusion.In addition, to " a reality for the disclosure
Apply example " reference be not intended to the presence for being interpreted to exclude the other embodiment also in relation with the feature.
In addition, be described below and/or claim in, term " above ", " on being covered on ... ", " setting
... on " and " on the top " can be in the following description and claims." above ", " covering
... on ", " setting exist ... on " and " on the top " can serve to indicate that two or more elements are straight each other
Connect physical contact.But " above ", " on being covered on ... ", " on setting exists ... " and " on the top "
It may also mean that two or more elements are not directly contacted with each other.For example, " on the top " may mean that one
Element is on another element but does not contact each other and can have another or multiple element between these two elements.
In addition, term "and/or" may mean that "and", it may mean that "or", it may mean that " exclusiveness or ", it can be with
Mean "one", it may mean that " some, but be not all of ", it may mean that " neither " and/or it can be with
Mean " the two ", but the range of theme claimed is unrestricted in this regard.
As will be described herein, still heat protection pressure sensitive resistor (TPV) equipment is provided comprising more with being connected to
The piezoresistor ontology of the electrode of a lead.TPV equipment further includes the terminal assemblies for being connected to piezoresistor ontology, terminal
Component includes the shell with side wall and pedestal, and pedestal includes the opening being formed therethrough which, the heat for piezoresistor ontology
Connection between electrode and terminal.The spring element (for example, the hard contact/terminal for showing spring performance) of terminal assemblies wraps
Include the second end for the intracorporal first end of shell being set He extending to hull outside.The terminal of spring element engages piezoresistor sheet
The thermode of body, and depend on for the hot link material (for example, solder) that thermode is coupled to spring element being less than still
It maintains to contact or disconnect contact higher than hot threshold value (fusing point such as under overvoltage fault condition).TPV equipment can also wrap
Interior electrode is included, which extends through the opening in the pedestal of shell, for engaging with spring element.
If will become apparent to herein, the TPV equipment of the disclosure can be by using the ceramic melt coupled with spring terminal
Disconnected device forms highly reliable open circuit to solve problem of the prior art, that is, high cost and low reliability.By abnormal overvoltage
During crossing incident heat caused by situation, it is against damages that TPV equipment can protect circuit.
Turning now to Fig. 1, it is pressure-sensitive that the Thermal protection according to an embodiment of the present disclosure for being used to be used together with circuit 2 will be described
Resistor (TPV) equipment 10.Simplified circuit 2 generally includes TPV equipment 10, power supply 3 and equipment or protected circuit 4.Such as
It will appreciated by a person of ordinary skill in the art taht in the normal operation period, it can be located in the first terminal of power supply 3 and protected in parallel
Circuit 4 between TPV equipment 10 be in closure or conduction position, and protected circuit 4 is powered by power supply 3.It is such as following
By description, under over-voltage condition, TPV equipment 10 opens (as shown in the figure).Circuit 2 described herein is not intended to restricted
, but it is merely provided for the illustrated examples of the general circuit of context.
Turning now to Fig. 2-4, TPV equipment 10 according to an embodiment of the present disclosure will be described in further detail.As shown,
TPV equipment 10 includes piezoresistor ontology 12, has the circle substantially limited by outer periphery 13 or circle in this embodiment
Disk shape.Piezoresistor ontology 12 includes the first electrode 14 along the setting of the first side 16 and the heat along the setting of second side 20
Electrode 18.First lead 21 is electrically connected to first electrode 14, and the second lead 22 is electrically connected to thermode 18.In some embodiments
In, thermode 18 is that metalization layer, silver, copper, aluminium or the copper of ceramics add aluminium.
TPV equipment 10 can also include the terminal assemblies 24 (Fig. 4) for being coupled to piezoresistor ontology 12.In some implementations
In example, terminal assemblies 24 include the shell 26 with side wall 28 and pedestal 30, wherein periphery of the side wall 28 generally about shell 26
Extend.Side wall 28 and pedestal 30 limit central cavity 32 wherein comprising spring element 35.Spring element 35 includes being arranged in shell
First end 36 in body 26 and extend to the second end 37 outside shell 26.Second end 37 is connected to third lead 23.It is as follows
It will be described in more detail, the first terminal at first end 36 can be connect by the opening of pedestal 30 with thermode 18, to work as bullet
When spring element 35 is coupled to the hot link element (for example, solder) of thermode 18 lower than fusing point, spring element 35 and thermoelectricity are maintained
Physics/electrical contact of pole 18.If hot link element is more than fusing point, for example, in the case where overcurrent condition, spring element 35
It will be disengaged from and separate by 44 thermodes 18 exposed that are open, so as to cause third lead 23 and power supply disconnection.
TPV equipment 10 further includes being coupled to the case lid 39 of shell 26 and/or piezoresistor ontology 12.In some implementations
In example, case lid 39 can substantially follow the shape of shell 26.As shown, case lid 39 can be using by head 40, neck
41 and a pair of notches 42 limit mushroom shaped.As best seen from, this provides notch 42 for the second conducting wire 22 and connects in Fig. 2
Closely/contact thermode 18 region.In some embodiments, case lid 39 may include the opening or slot 43 across neck 41,
Therefrom the second end 37 of spring element 35 can protrude.Although it is not shown, but TPV equipment 10 can also include surrounding varistor
The conformal epoxy resin or other high isolation materials of device ontology 12, terminal assemblies 24 and case lid 39.
Turning now to Fig. 5-9, the terminal assemblies of TPV equipment 10 according to an embodiment of the present disclosure will be described in further detail
24.As shown, terminal assemblies 24 include being fixed to thermode 18 via the opening 44 that the pedestal 30 by shell 26 is formed
Spring element 35.More specifically, that hot link material 48 can be used is (all for the first terminal 45 at the first end 36 of spring element 35
Such as solder) it is connected to thermode 18.First terminal 45 may include one or more protrusions 50 extending therefrom, to permit
Perhaps the region that hot link material 48 gathers between the first end 36 and thermode 18 of spring element 35.In some embodiments,
Hot link material 48 is arranged mainly along the exposed surface of thermode 18, for example, as shown in Figure 5.In other embodiments, hot chain
The first end 36 that material 48 is connect mainly along spring element 35 is arranged, for example, as shown in Figure 6.
When hot link material 48 is lower than fusing point, physics/electrical contact between first terminal 45 and thermode 18 is maintained, from
And first terminal 45 is made to be located in 44 top of opening.But when thermode 18 heats and be more than the fusing point of hot link material 48
When, hot link material 48 melts and starts to flow, to generate between thermode 18 and the first terminal 45 of spring element 35
Clearance for insulation.During overcurrent event, the first end 36 of spring element 35 is configured to the biasing bullet due to spring element 35
Spring force and the position shown in Fig. 5-6 is moved to position shown in Fig. 7-8.In some embodiments, when spring element 35
When disconnecting with thermode 18, the first end 36 of spring element 35 is contained in guidance field 49, and guidance field 49 is recessed to shell
In 26 pedestal 30.Guidance field 49 can be provided when spring element 35 is swung in the cavity 32 of shell 26 for protrusion 50
Gap.
As further shown, terminal assemblies 24 may include one fixed to shell 26 and piezoresistor ontology 12 or
Multiple terminal clamps 51.In some embodiments, each of terminal clamp 51 is substantially U-shaped fastener, is surrounded from shell 26
The attachment members 52 that extend of side wall 28 it is fixed.For example, as best seen from, the one leg of terminal clamp 51 can be basic in Fig. 6
On be parallel to shell 26 pedestal 30 bottom surface 53 extend.Another one leg may include ridge or lip 55, be designed to it is attached
The correspondence surface characteristics (for example, recess) of connection member 52 cooperates or engages the machinery terminal clamp 51 to be secured in place
Part.The outer surface 54 of each terminal clamp 51 can be fixed (for example, passing through high-temperature solder) to piezoresistor ontology 12, example
Such as, it is affixed directly to thermode 18.During assembly, terminal clamp 51 can be initially secured on piezoresistor ontology 12, be made
Then obtaining shell 26 can be engaging in place during assembly.It should be appreciated that above-mentioned attachment configuration is non-limited
, because within the scope of this disclosure, being by other arrangements that shell 26 is fixed to piezoresistor ontology 12 releasedly can
Can.It in addition, terminal clamp 51 is not limited to any certain material, but in the exemplary embodiment may include the SUS of pre-plating tin
Or the steel of pre-plating tin.
The shell 26 of terminal assemblies 24 further includes the first supporting walls 57 and the second supporting walls 58, the first supporting walls 57 and second
Supporting walls 58 are limited for wherein receiving the channel 59 with fixed spring element 35.Channel 59 limits and extends through side wall 28
Opening or slot 60, to allow the second end 37 of spring element 35 to extend to the outside of shell 26, to be connect with third lead 23.Shell
Body 26 further includes support column 62 adjacent and extending therefrom with the first supporting walls 57.As shown, spring element 35 is at least partly
Ground is bent around support column 62, to provide tension to spring element 35.In some embodiments, shell 26 can be high temperature modeling
Material or resin.Polyphenylene sulfide (PPS), liquid crystal polymer (LCP) etc..
As best seen from, spring element 35 includes the central portion extended between first end 36 and second end 37 in Fig. 9
Divide 65, wherein center portion 65 may include one or more bending features to mitigate passage temperature due to fatigue and at any time
Fluctuation caused by stress concentrate.For example, center portion 65 may include the first bending 66, Yi Ji close to first end 36
The second bending 67 between first bending 66 and second end 37.Second bending 67 is located at close to angle joint 68, and angle joint 68 has
It is configured to extend through the first part 69 in the channel 59 of shell 26 and is configured to extend through the second part 70 of slot 60.
As further shown, first terminal 45 can be extended vertically from center portion 65, enable to contact with thermode 18.Although
It is not limited to any certain material, but spring element 35 can be beryllium copper, tin bronze or other flexible metallic materials.
In some embodiments, angle joint 68 has the first elevation dimension H1, and the first elevation dimension H1 is than adjacent center portion
Points 65 and first end 36 the second elevation dimension H2 it is big/long.Difference in height between H1 and H2 is designed that spring element 35
Freely swung with the smallest friction from the pedestal 30 of shell 26 during overcurrent event.As further shown, spring element 35
Second end 37 further include Second terminal 74, for spring element 35 to be coupled with 23 electrical/physical of third lead.In some realities
It applies in example, Second terminal 74 may include side wall 80,81, limit in the channel 73 for wherein receiving third lead 23.The
Two-terminal 74 extends from the second part 70 of angle joint 68 perpendicularly towards the center line L-L of shell 26.In some embodiments,
Two-terminal 74 can extend beyond the outer periphery 13 of piezoresistor ontology 12.For example, being based in piezoresistor ontology 12
In the case where 18mm (diameter) ceramics " 13 ", Second terminal 74 can extend beyond periphery 13.It should be appreciated that
In the other embodiments for for example wherein using ceramic " 13 " 20mm, Second terminal 74 can not protrude so remote.
Turning now to Figure 10, another embodiment of the first end 36 of spring element 35 will be described in further detail.As schemed
Show, first end 36 may include from 45 outwardly extending one groups of protrusions 75,76 of first terminal.In this embodiment, protrusion 75,
76 from the vertical or substantially vertical extension in the surface of first terminal 45 77.It, can during spring element 35 is connected to thermode
To provide hot link material 48, such as solder between protrusion 75,76.There is no protrusion 75 and 76, hot link material 48 holds
It is easily extruded when spring element 35 and thermode 18 contact and leaves first end 36.More specifically, protrusion 75,76 is in 45 He of terminal
Specific gap is kept between thermode 18, and is ensured that there are enough hot link materials 48 and provided with infall in-between
Suitable weld strength.
Turning now to Figure 11-12, another TPV equipment 110 according to an embodiment of the present disclosure will be described in further detail.Such as
Shown in figure, TPV equipment 110 includes many features described previously with respect to the TPV equipment 10 of Fig. 1-10, therefore, in order to succinctly rise
See, no longer it will be described in detail.In this embodiment, TPV equipment 110 include piezoresistor ontology 112, take by
The square or rectangular shape that periphery 113 limits.Piezoresistor ontology 112 includes first along the setting of the first side 116
Electrode (not shown) and the thermode 118 being arranged along second side 120.First lead 121 is electrically connected to first electrode, and second
Lead 122 is electrically connected to thermode 118.In some embodiments, thermode 118 be ceramics metalization layer, silver, copper, aluminium or
Copper adds aluminium.
TPV equipment 110 can also include the terminal assemblies 124 for being coupled to piezoresistor ontology 112.In some embodiments
In, terminal assemblies 124 include the shell 126 with side wall 128 and pedestal 130, and wherein side wall 128 is generally about shell 126
Periphery extends.Side wall 128 and pedestal 130 limit central cavity 132 wherein comprising spring element 135.Spring element 135 includes
The first end 136 that is arranged in shell 126 and the second end 137 outside shell 126 is extended to, wherein second end 137 is connected to
Third lead 123.
As shown, when spring element 135 to be coupled to the hot link element (for example, solder) of thermode 118 lower than molten
When point, the first terminal 145 at the first end 136 of spring element 135 can be connected by the opening 144 and thermode 118 of pedestal 130
It connects, to maintain physics/electrical contact of spring element 135 Yu thermode 118.If hot link element is more than fusing point, such as in mistake
During current occurrences, spring element 135 will be disengaged from and the expose portion far from (as shown in the figure) thermode 118, so as to cause the
Three leads 123 are disconnected with power supply.Although it is not shown, but TPV equipment 110 can also include being coupled to shell 126 and/or pressure-sensitive electricity
Hinder the case lid of device ontology 112.
As further shown, the second end 137 of spring element 135 further includes Second terminal 174, is used for spring element
135 couple with 123 electrical/physical of third lead.In some embodiments, Second terminal 174 may include side wall 180,181,
It is limited for the channel 173 in the one end for wherein receiving third lead 123.Second terminal 174 can be from spring element 135
The second part 170 of angle joint 168 extends vertically, the center line L-L far from shell 126.In some embodiments, Second terminal
174 are separated by gap and thermode 118, which can use epoxy coating material or the filling of other isolated materials, the
Enough dielectric strengths are provided between two-terminal 174 and thermode 118.
Terminal assemblies 124 may include one or more terminal clamps fixed to shell 126 and piezoresistor ontology 112
151.In some embodiments, (one or more) terminal clamp 151 is secured to the substantially U-shaped fastener of shell 126.?
In embodiment shown in Figure 12, terminal clamp 151 can extend across shell 126 completely, to wind around side wall 128.Some
In embodiment, terminal clamp 151 be can be provided in the groove 182 formed in the bottom surface 153 of the pedestal 130 of shell 126, terminal
The outer surface 154 of folder 151 can fix (for example, passing through high-temperature solder) to piezoresistor ontology 112.In some embodiments
In, terminal clamp 151 is directly attached to thermode 118.During assembly, terminal clamp 151 can be initially secured to piezoresistor
Ontology 112, so that then shell 126 can be engaging in place.In some embodiments, terminal clamp 151 may include pre-plating tin
The steel of SUS or pre-plating tin.
Turning now to Figure 13-15, TPV equipment 210 according to an embodiment of the present disclosure will be described in further detail.As schemed
Show, TPV equipment 210 includes piezoresistor ontology 212, and in this embodiment, piezoresistor ontology 212 has by outer periphery
213 circles limited or disc-shape.Piezoresistor ontology 212 includes (not showing along the first electrode of the first side 216 setting
Out), and along second side 220 thermode 218 being arranged.First lead 221 is electrically connected to first electrode, and the second lead
222 are electrically connected to thermode 218.In some embodiments, thermode 218 is that metalization layer, silver, copper, aluminium or the copper of ceramics add
Aluminium.
TPV equipment 210 can also include the terminal assemblies 224 for being coupled to piezoresistor ontology 212.In some embodiments
In, terminal assemblies 224 include the shell 226 with side wall 228 and pedestal 230, and wherein side wall 228 is generally about shell 226
Periphery extends.Side wall 228 and pedestal 230 limit central cavity 232 wherein comprising spring element 235.Spring element 235 includes
The first end 236 that is arranged in shell 226 and the second end 237 outside shell 226 is extended to, wherein second end 237 is connected to
Third lead 223.As will be retouched in more detail below, the first terminal at first end 236 can pass through the opening and thermoelectricity of pedestal 230
Pole 218 connect, with when spring element 235 is coupled to thermode 218 hot link element (for example, solder) be lower than fusing point when,
Spring element 235 is coupled to thermode 218.If hot link element is more than fusing point, such as in the case where overcurrent condition,
Spring element 235 will discharge and start to move, so that third lead 223 and power supply be made to disconnect.
TPV equipment 210 further includes being coupled to the case lid 239 of shell 226 and/or piezoresistor ontology 212.Some
In embodiment, case lid 239 can substantially follow the shape of shell 226.For example, case lid 239 can use roughly circular shape
Shape, wherein flattened side 279 is parallel to or is arranged essentially parallel to the extension of the second lead 222.Flattened side 279 can draw for second
Line 222 provides the region of close/contact thermode 218.As best shown in Figure 14, case lid 239 may include across side wall 241
Opening or slot 243, therefrom the second end 237 of spring element 235 can protrude.Although it is not shown, case lid 239 and shell
Body 226 can be covered by conformal epoxy resin or other high isolation materials.
Turning now to Figure 15-17, the terminal group of TPV equipment 210 according to an embodiment of the present disclosure will be described in further detail
Part 224.As shown, terminal assemblies 224 may include the interior electrode 283 being arranged between thermode 218 and shell 226.That is,
Interior electrode 283 may include the outer surface 284 of main body 289, is that plane is either substantially planar, has shell 226
Pedestal 230 bottom surface 253.Main body 289 for example can be directly coupled to thermode 218 using high-temperature solder.In some realities
It applies in example, shell 226 may include being resized with the sunk area 286 of the electrode 283 in wherein receiving.
As shown, interior electrode 283 may include preceding contact pin 295, third terminal 285 and terminal tab 287, wherein third
Terminal 285 and terminal tab 287 are from the vertical or substantially vertical extension of main body 289.Third terminal 285 is configured to extend through
The opening 244 provided by the pedestal 230 of shell 226.During use, spring element 235 can be for example using hot link material
Expect that (not shown) (such as solder) is fixed to the third terminal 285 of interior electrode 283.When hot link material is lower than fusing point,
Maintain physics/electrical contact between third terminal 285 and spring element 235.But when third terminal 285 heats and is more than
When the fusing point of hot link material, hot link material melts and starts to flow, thus third terminal 285 and spring element 235 it
Between generate clearance for insulation.That is, during overcurrent event, the first end 236 of spring element 235 is inclined due to spring element 235
It sets spring force and starts to move away from third terminal 285.
The shell 226 of terminal assemblies 224 may include the first supporting walls 257 and the second supporting walls 258, the first supporting walls
257 and second supporting walls 258 limit for wherein receive and fixed spring element 235 channel 259.Channel 259 extends to
The opening or slot 260 provided by side wall 228, to allow the second end 237 of spring element 235 to extend to the outside of shell 226,
To be connect with third lead 223.Shell 226 further includes support column 262 adjacent and extending therefrom with the first supporting walls 257.Such as
Shown in figure, spring element 235 is bent at least partly around support column 262, to provide to the first end 236 of spring element 235
Tension.In some embodiments, shell 226 can be high temperature plastics or resin, such as polyphenylene sulfide (PPS), liquid crystal polymer
(LCP) etc..
As further shown, shell 226 may include the supporting element 290 extended from the inner surface 291 of pedestal 230.Support
Part 290 may be coupled to side wall 228, and three (3) sides and third terminal 285 including part around opening 244.Support
Part 290 is used as the physical support or barrier of third terminal 285, while still allowing for through spring element 235 close to third terminal
285。
For accommodating terminal contact pin 287, shell 226 can also include the tegmental wall extended from the inner surface 291 of pedestal 230
292.Once interior electrode 283 is coupled to shell 226, terminal tab 287 is just extended in interior groove (not shown).Terminal tab
287 can be set into 285 symmetrical configuration of third terminal, and be once coupled to shell 226, inside electrode 283 provided attached
The support added.As shown, in order to which interior electrode 283 is fixedly attached to shell 226, third terminal 285 and terminal tab 287
Each of may include extend outwardly with respectively with the corresponding securing feature (not shown) in supporting element 290 and tegmental wall 292
Fastener, clasp or the surface characteristics 294 of engagement.In addition, in some embodiments, the preceding contact pin 295 of interior electrode 283 can prolong
It reaches in the alignment recess 296 formed in the main body 289 of shell 226.
Turning now to Figure 18, spring element 235 according to an embodiment of the present disclosure will be described in further detail.As shown,
Spring element 235 can be flat springs terminal comprising the center portion extended between first end 236 and second end 237
265.Center portion 265 may include being provided to mitigate one or more of the neutralization temperature fluctuation of the stress collection due to caused by fatigue
A bending or curve.For example, center portion 265 may include the first bending 266 close to first end 236, and setting is the
The second bending 267 between one bending 266 and second end 237, wherein the second bending 267 may include spring groove 297 to promote
Bending and reduction are along the stress at that point of spring element 235.Second bending 267 can be located near angle joint 268, angle
Connector 268 has the first part 269 in the channel 259 for being configured to extend through shell 226 and is configured to extend through slot
260 second part 270.As shown, protrusion 250 can be orthogonally away from the extension of first end 236, enable to and third
Terminal 285 contacts.Although it is not shown, first end 236 and protrusion 250 may include the covering of hot link solder.
In some embodiments, angle joint 268 has the first elevation dimension H1, and the first elevation dimension H1 is than adjacent center portion
Points 265 and first end 236 the second elevation dimension H2 it is big/long.Difference in height between H1 and H2 is designed that spring element
235 are freely swung during overcurrent event between center portion 265 and the pedestal 230 of shell 226 with the smallest friction.
As further shown, the second end 237 of spring element 235 may include Second terminal 274, be used for spring element
235 couple with third lead (not shown) electrical/physical.In some embodiments, Second terminal 274 may include side wall 280,
281, it limits in the channel 273 for wherein receiving third lead.Second terminal 274 is generally from the second of angle joint 268
Part 270 extends vertically, such as extends towards the center line of shell 226.In some embodiments, for example, as shown in figure 15,
Two-terminal 274 can extend beyond the outer periphery 213 of piezoresistor ontology 212.
Turning now to Figure 19-21, another TPV equipment 310 according to an embodiment of the present disclosure will be described in further detail.Such as
Shown in figure, TPV equipment 310 include piezoresistor ontology 312, in this embodiment, piezoresistor ontology 312 have by
The square or rectangular shape that outer periphery 313 limits.Piezoresistor ontology 312 includes the along the setting of the first side 316
One electrode (not shown), and the thermode 318 being arranged along second side 320.First lead 321 is electrically connected to first electrode,
And the second lead 322 is electrically connected to thermode 318.In some embodiments, thermode 318 be ceramics metalization layer, silver,
Copper, aluminium or copper add aluminium.
TPV equipment 310 can also include the terminal assemblies 324 for being coupled to piezoresistor ontology 312.In some embodiments
In, terminal assemblies 324 include the shell 326 with side wall 328 and pedestal 330, and wherein side wall 328 is generally about shell 326
Periphery extends.Side wall 328 and pedestal 330 limit central cavity 332 wherein comprising spring element 335.
As shown, terminal assemblies 324 may include the interior electrode 383 being arranged between thermode 318 and shell 326.
That is, interior electrode 383 may include being coupled to the main body 389 of thermode 318 and along the bottom surface of the pedestal of shell 326 330
The outer surface of plane or substantially planar extension.Interior electrode 383 may include preceding contact pin 395, and from main body 389 is vertical or base
Vertically extending third terminal 385 and terminal tab 387 in sheet.In some embodiments, shell 326 may include pedestal 330
In be resized with wherein receive in electrode 383 sunk area.
TPV equipment 310 further includes being coupled to the case lid 339 of shell 326 and/or piezoresistor ontology 312.As schemed
Show, the side wall 328 of shell 326 can be used one group of fastener 398 and engage case lid 339.In some embodiments, which fastens
Part 398 includes one or more contact pin or the protrusion being engaged in corresponding opening.Case lid 339 can also include one or more
A release groove 399, to provide flexibility as case lid 339 when case lid 339 is attached to shell 326.
As shown, case lid 339 can substantially follow the shape of shell 326, but the embodiments herein is not limited to appoint
What specific shape.For example, case lid 339 can use generally square or rectangular shape.As in Figure 19 best seen from, shell
Lid 339 may include one or more flattened sides 379, and the end for being parallel to or being arranged essentially parallel to the second lead 322 is prolonged
It stretches.Flattened side 379 can provide the region of close/contact thermode 318 for the second lead 322.Case lid 339 may include
Across the opening or slot 343 of flattened side 379, therefrom spring element 335 can be protruded.Although it is not shown, case lid 339
It can be covered by conformal epoxy resin or other high isolation materials with shell 326.
Turning now to Figure 21, the terminal assemblies of TPV equipment 310 according to an embodiment of the present disclosure will be described in further detail
324.Spring element 335 includes the first end 336 being arranged in shell 326 and extends to the second end 337 outside shell 326,
Wherein second end 337 is connected to third lead 323 (Figure 19-20).Pass through as shown, third terminal 385 can extend through
The opening 344 that the pedestal 330 of shell 326 provides.Spring element 335 is configured to for example using hot link material (not shown)
(such as solder) is fixed to the third terminal 385 of interior electrode 383.When hot link material is lower than fusing point, third end is maintained
Physics/electrical contact between son 385 and spring element 335.But when third terminal 385 heats and is more than hot link material
Fusing point when, hot link material melts and starts to flow, thus between third terminal 385 and spring element 335 generate insulation
Gap.That is, during overcurrent event, the first end 336 of spring element 335 due to spring element 335 biasing spring force and
Start to move away from third terminal 385.
The shell 326 of terminal assemblies 324 may include the first supporting walls 357 and the second supporting walls 358, the first supporting walls
357 and second supporting walls 358 limit in shell 326 receive and fixed spring element 335 channel 359.Prolong in channel 359
The opening provided by side wall 328 or slot 360 are reached, to allow the second end 337 of spring element 335 to extend to shell 326
Outside, to be connect with third lead 323.Shell 326 further includes support column adjacent and extending therefrom with the first supporting walls 357
362.As shown, spring element 335 is bent at least partly around support column 362, with to the first end of spring element 335
336 provide tension.
As further shown, shell 326 may include the supporting element 390 extended from the inner surface 391 of pedestal 330.Support
Part 390 may be coupled to side wall 328, and three (3) sides and third terminal 385 including part around opening 344.Support
Part 390 is used as the physical support or barrier of third terminal 385, while still allowing for connecing by the first end 336 of spring element 335
Nearly third terminal 385.
For accommodating terminal contact pin 387, shell 326 can also include the tegmental wall extended from the inner surface 391 of pedestal 330
392.Once interior electrode 383 is coupled to shell 326, terminal tab 387 is just extended in the interior groove (not shown) of tegmental wall 392.
In this embodiment, terminal tab 387 be arranged to 385 symmetrical configuration of third terminal, and be once coupled to shell 326,
Additional support is provided with regard to inside electrode 383.In order to which interior electrode is fixedly attached to shell 326, third terminal 385 and terminal
Each of contact pin 387 may include extending outwardly to connect respectively with the corresponding securing feature in supporting element 390 and tegmental wall 392
Fastener, clasp or the surface characteristics (not shown) of conjunction.In addition, in some embodiments, the preceding contact pin 395 of interior electrode 383 can
To extend in the alignment recess 396 formed in the main body 389 of shell 326.
Turning now to Figure 22, spring element 335 according to an embodiment of the present disclosure will be described in further detail.As shown,
Spring element 335 can be flat springs terminal comprising the center portion extended between first end 336 and second end 337
365.Center portion 365 may include being provided to mitigate one or more of the neutralization temperature fluctuation of the stress collection due to caused by fatigue
A bending or curve.For example, center portion 365 may include the first bending 366 close to first end 336, and setting is the
The second bending 367 between one bending 366 and second end 337, wherein the second bending 367 may include spring groove 397 to promote
Bending and reduction are along the stress at that point of spring element 335.Second bending 367 can be located near channel part 368,
Channel part 368 is substantially straight, and is configured to extend through the channel 359 of shell 326.Channel part 368 can wrap
Side tabs 369 are included, side tabs 369 are configured to engage with sidewall channels 361 (Figure 21), and spring element 335 is fixed on shell
In 326.As shown, side tabs 369 can be from the vertical or substantially vertical extension of channel part 368.As further shown in Figure,
First end 336 may include the protrusion 350 extended far from spring element 335, enable to contact with third terminal 385.Though
It is so not shown, but first end 336 and protrusion 350 may include covering or solder material.
In some embodiments, there is channel part 368 first elevation dimension H1, the first elevation dimension H1 to compare adjacent center
Second elevation dimension H2 of part 365 and first end 336 is big/long.Difference in height between H1 and H2 is designed that spring element
Part 335 is freely swung during overcurrent event between center portion 365 and the pedestal 330 of shell 326 with the smallest friction.
As further shown, the second end 337 of spring element 335 may include Second terminal 374, be used for spring element
335 couple with third lead (not shown) electrical/physical.In some embodiments, Second terminal 374 may include side wall 380
With 381, limit in the channel 373 for wherein receiving third lead.Second terminal 374 is generally flat from channel part 368
Row extends.In some embodiments, Second terminal 374 is supported on thermode 318 or far from thermode 318.For example, the
Two-terminal 374 can be separated by gap and thermode 318, which can be filled out with epoxy coating material or other isolated materials
It fills, to provide enough dielectric strengths between Second terminal 374 and thermode 318.
Turning now to Figure 23-24, another terminal of TPV equipment according to an embodiment of the present disclosure will be described in further detail
Component 424.As shown, terminal assemblies 424 include many features previously with respect to terminal assemblies description herein, therefore,
For simplicity, it may not be described in greater detail.Although in addition, being not shown for simplicity, terminal assemblies
424 can operate together with TPV equipment, be similar to embodiment as described herein, which includes along piezoresistor ontology
One or more surfaces setting ceramic metallized layer.
As shown, spring element 435 includes the first end 436 being arranged in shell 426 and extends to outside shell 426
Second end 437, wherein second end 437 may be coupled to third lead (not shown).As shown, third terminal 485 can be with
The opening 444 provided by the pedestal 430 of shell 426 is provided.Spring element 435 is configured to for example using hot link material
Expect that 448 (such as solders) are fixed to the third terminal 485 of electrode 483A in first, hot link material 448 can be along the
Three terminals 485 and/or spring element 435 are arranged.When hot link material 448 is lower than fusing point, third terminal 485 and spring are maintained
Physics/electrical contact between element 435.But when third terminal 485 heats and is more than the fusing point of hot link material 448,
Hot link material 448 melt simultaneously start to flow, thus unclamp hot link material 448, third terminal 485 and spring element 435 it
Between physical connection, to form clearance for insulation between third terminal 485 and spring element 435 when separating.More
Body, during overcurrent event, the spring force of spring element 435 overcomes the connection formed by hot link material 448, so that bullet
The first end 436 of spring element 435 is removed in the relaxation of spring element 435 from third terminal 485.As shown, spring element 435
It can be moved along the inner surface 491 of the pedestal 430 of shell 426.
The shell 426 of terminal assemblies 424 may include the first supporting walls 457 and the second supporting walls 458, the first supporting walls
457 and second supporting walls 458 limit in shell 426 receive and fixed spring element 435 channel 459.Prolong in channel 459
The opening provided by side wall 428 or slot 460 are reached, to allow the second end 437 of spring element 435 to extend to shell 426
Outside with third lead to connect.Shell 426 can also include support column adjacent and extending therefrom with the first supporting walls 457
462.As shown, spring element 435 is bent at least partly around support column 462, with to the first end of spring element 435
436 provide tension.
As further shown, shell 426 may include the supporting element 490 extended from the inner surface 491 of pedestal 430.Support
Part 490 may be coupled to side wall 428, and three (3) sides and third terminal 485 including part around opening 444.Support
Part 490 is used as the physical support or barrier of third terminal 485, while still allowing for connecing by the first end 436 of spring element 435
Nearly third terminal 485.
In order to accommodate the second inner electrode 483B, shell 426 can also include the lid extended from the inner surface 491 of pedestal 430
Wall 492.Once the second inner electrode 483B is coupled to shell 426, terminal tab 487 just extends to upward from the downside of tegmental wall 492
In the interior groove (not shown) of extension.In this embodiment, terminal tab 487 can represent forth terminal.In order to by first
It is fixedly attached to shell 426 with the second inner electrode 483A-B, electrode 483A-B can respectively include outside in first and second
Extend with respectively in supporting element 490 and tegmental wall 492 corresponding securing feature engagement fastener, clasp or surface characteristics (not
It shows).As shown, electrode 483A-B can be the individual conduction on opposite sides positioned at shell 426 in first and second
Element.
Turning now to Figure 25-26, TPV equipment 510 according to an embodiment of the present disclosure will be described in further detail.As schemed
Show, TPV equipment 510 includes piezoresistor ontology 512, and in this embodiment, piezoresistor ontology 512 has by periphery
The circle or disc-shape that side 513 limits.Piezoresistor ontology 512 include along the first side 516 setting first electrode (not
Show), and the thermode 518 being arranged along second side 520.First lead 521 is electrically connected to first electrode, and the second lead
522 are electrically connected to thermode 518.In some embodiments, thermode 518 is that metalization layer, silver, copper, aluminium or the copper of ceramics add
Aluminium.
TPV equipment 510 can also include the terminal assemblies 524 for being coupled to piezoresistor ontology 512.In some embodiments
In, terminal assemblies 524 include the shell 526 with side wall 528 and pedestal 530, and wherein side wall 528 is generally about shell 526
Periphery extends.Side wall 528 and pedestal 530 limit central cavity 532 wherein comprising spring element 535.As shown, spring element
Part 535 includes the first end 536 being arranged in shell 526 and extends to the second end 537 outside shell 526, wherein second end
537 may be coupled to third lead 523.As shown, third terminal 585 can extend through the pedestal 530 by shell 526
The opening 544 of offer.Spring element 535 is configured to for example fixed using hot link material (not shown) (such as solder)
The third terminal 585 of electrode 583A in first, hot link material can be set along third terminal 585 and/or spring element 535
It sets.When hot link material is lower than fusing point, physics/electrical contact between third terminal 585 and spring element 535 is maintained.But
When third terminal 585 heats and is more than the fusing point of hot link material, hot link material melts and starts to flow, to unclamp
Physical connection between hot link material, third terminal 585 and spring element 535.It therefore, can be when separating
Clearance for insulation is formed between three terminals 585 and spring element 535.More specifically, during overcurrent event, spring element 535
Spring force overcome the connection formed by hot link material so that the first end 536 of spring element 535 is in the pine of spring element 535
It is removed when relaxation from third terminal 585.As shown, spring element 535 can be along the inner surface 591 of the pedestal 530 of shell 526
It is mobile.
The shell 526 of terminal assemblies 524 may include the first supporting walls 557 and the second supporting walls 558, the first supporting walls
557 and second supporting walls 558 limit in shell 526 receive and fixed spring element 535 channel 559.Prolong in channel 559
The opening provided by side wall 528 or slot 560 are reached, to allow the second end 537 of spring element 535 to extend to shell 526
Outside with third lead 523 to connect.Shell 526 can also include support adjacent and extending therefrom with the first supporting walls 557
Column 562.As shown, spring element 535 is bent at least partly around support column 562, with to the first end of spring element 535
536 provide tension.
As further shown, shell 526 may include the supporting element 590 extended from the inner surface 591 of pedestal 530.Support
Part 590 may be coupled to side wall 528, and three (3) sides and third terminal 585 including part around opening 544.Support
Part 590 is used as the physical support or barrier of third terminal 585, while still allowing for connecing by the first end 536 of spring element 535
Nearly third terminal 585.
In order to accommodate the second inner electrode 583B, shell 526 can also include the lid extended from the inner surface 591 of pedestal 530
Wall 592.Once the second inner electrode 583B is coupled to shell 526, terminal tab 587 just extends to upward from the downside of tegmental wall 592
In the interior groove (not shown) of extension.In this embodiment, terminal tab 587 can represent forth terminal.In order to by first
It is fixedly attached to shell 526 with the second inner electrode 583A-B, electrode 583A-B can respectively include outside in first and second
Extend with respectively in supporting element 590 and tegmental wall 592 corresponding securing feature engagement fastener, clasp or surface characteristics (not
It shows).As shown, electrode 583A-B can be the individual conduction on opposite sides positioned at shell 526 in first and second
Element.
In short, the TPV equipment of the disclosure is provided can rapidly disconnect with ceramic thermoelectric pole in response to overcurrent event
To provide the flat springs terminal to the open circuit of power supply.Embodiment of the disclosure provides at least following advantages.First, TPV equipment
It assembles relatively easy and allows automatic production, to reduce manufacturing cost.Second, due to the construction of spring element, TPV is set
It is standby that there is high reliability under the conditions of abnormal overvoltage.Third, since spring element is welded direct to the thermometal layer of ceramics
On, therefore TPV equipment provides the quick response to overheat.4th, due to identical pin structure and profile, and due to using
Heat folder, therefore TPV equipment provides plug-in type (drop-in) replacement for existing TMOV.5th, once spring element is in shell
Freely swing, TPV equipment just provides firm disconnection due to long open circuit distance.6th, an assembly module can cover
All voltage ratings of one disk size.
Although the disclosure has referred to certain schemes and has been described, do not departing from as defined in appended claims
In the case where the scope and range of the disclosure, a variety of modifications, alterations and modifications can be carried out to described scheme.Therefore, it anticipates
Figure is that the present disclosure is not limited to described schemes, but it is complete with being defined by the language and its equivalent of appended claims
Portion's range.Although the disclosure has referred to certain schemes and has been described, do not departing from as defined in appended claims
In the case where spirit and scope of the present disclosure, a variety of modifications, alterations and modifications can be carried out to described scheme.Therefore, it anticipates
Figure is that the present disclosure is not limited to described schemes, but it is complete with being defined by the language and its equivalent of appended claims
Portion's range.
Claims (20)
1. a kind of heat protection pressure sensitive resistor TPV equipment, comprising:
Piezoresistor ontology, comprising:
First side；And
Along the thermode that second side opposite with first side is arranged, wherein first lead is electrically connected to first side simultaneously
And second lead be electrically connected to the thermode；And
Terminal assemblies, are directly coupled to described second side of the piezoresistor ontology, and the terminal assemblies include:
Shell including side wall and pedestal, wherein providing opening in the susceptor；And
Spring element has the second end for the side wall that the intracorporal first end of the shell is arranged in and is coupled to the shell,
The first end includes first terminal；And
Interior electrode is arranged between the thermode and the pedestal of the shell, and the interior electrode includes extending through institute
The terminal tab of the opening in pedestal is stated, wherein the terminal tab includes third terminal, the third terminal can be operated
For along the terminal tab be arranged when hot link material is lower than fusing point, maintained and the bullet via the hot link material
The direct physical contact of the first end of spring element.
2. TPV equipment as described in claim 1, wherein the Second terminal at the second end of the spring element is connected to
Third lead.
3. TPV equipment as described in claim 1 further includes being arranged between the thermode and the pedestal of the shell
The second inner electrode, the second inner electrode includes the Second terminal contact pin extended in the shell.
4. TPV equipment as claimed in claim 3, the shell of the terminal assemblies further include:
The supporting element extended from the inner surface of the pedestal, the opening of the supporting element in the pedestal and described interior
The third terminal of electrode extends；And
The tegmental wall extended from the inner surface of the pedestal, the tegmental wall receive the Second terminal of the second inner electrode
Contact pin.
5. TPV equipment as described in claim 1, the terminal assemblies further include the case lid for being coupled to the shell.
6. TPV equipment as described in claim 1, wherein the hot link material is melted and is flowed when being higher than the fusing point,
To generate clearance for insulation between the interior electrode and the first terminal of the spring element.
7. TPV equipment as described in claim 1, the shell of the terminal assemblies further include:
One group of supporting walls limits the channel for receiving the spring element；
The slot extended across the side wall, the slot is from spring element described in channel reception；And
The support column adjacent with one group of supporting walls, wherein the spring element is curved at least partly around the support column
It is bent.
8. TPV equipment as described in claim 1, wherein the hot link material is solder.
9. TPV equipment as described in claim 1, the first end of the middle spring element includes outwardly extending prominent
It rises, and wherein the hot link material is contacted with the protrusion.
10. a kind of thermometal oxide varistor TMOV component, comprising:
Piezoresistor ontology, comprising:
First side；And
Along the thermode that second side opposite with first side is arranged, wherein first lead is electrically connected to first side simultaneously
And second lead is electrically connected to the thermode；And
Terminal assemblies, are directly coupled to described second side of the piezoresistor ontology, and the terminal assemblies include:
Shell including side wall and pedestal, wherein providing opening in the susceptor；
Spring element has the second end for the side wall that the intracorporal first end of the shell is arranged in and is coupled to the shell,
The first end includes first terminal；And
Interior electrode is arranged between the thermode and the pedestal of the shell, and the interior electrode includes extending through institute
The terminal tab of the opening in pedestal is stated, wherein the terminal tab includes third terminal, the third terminal can be operated
To be maintained and the bullet via the hot link material when the hot link material being arranged along the terminal tab is lower than fusing point
The direct physical contact of the first end of spring element.
11. TMOV component as claimed in claim 10, wherein the Second terminal at two end of the spring element connects
It is connected to third lead.
12. TMOV component as claimed in claim 10 further includes the pedestal that the thermode and the shell is arranged in
Between the second inner electrode, the second inner electrode includes the Second terminal contact pin extended in the shell.
13. TMOV component as claimed in claim 12, the shell of the terminal assemblies further include:
The supporting element extended from the inner surface of the pedestal, the opening of the supporting element in the pedestal and described interior
The third terminal of electrode extends；And
The tegmental wall extended from the inner surface of the pedestal, the tegmental wall receive the Second terminal of the second inner electrode
Contact pin.
14. TMOV component as claimed in claim 12, wherein the interior electrode and the second inner electrode are along the shell
Opposite side positioning.
15. TMOV component as claimed in claim 10, the terminal assemblies further include the case lid for being coupled to the shell.
16. TMOV component as claimed in claim 10, wherein the hot link material melts cocurrent when being higher than the fusing point
It is dynamic, to generate clearance for insulation between the interior electrode and the first terminal of the spring element.
17. TMOV component as claimed in claim 10, the shell of the terminal assemblies further include:
One group of supporting walls limits the channel for receiving spring element；
The slot extended across the side wall, the slot is from spring element described in the channel reception；And
The support column adjacent with one group of supporting walls, wherein the spring element is curved at least partly around the support column
It is bent.
18. TMOV component as claimed in claim 10, wherein the first end of the spring element includes outwardly extending
Protrusion, and wherein the hot link material is contacted with the protrusion.
19. a kind of thermometal oxide varistor TMOV component, comprising:
Piezoresistor ontology, comprising:
First side；And
Along the ceramic metallized layer that second side opposite with first side is arranged, wherein first lead is electrically connected to described the
Side and the second lead is electrically connected to the ceramic metallized layer；And
Terminal assemblies, are coupled to described second side of the piezoresistor ontology, and the terminal assemblies include:
Shell including side wall and pedestal, wherein the pedestal is directly coupled to the ceramic metallized layer, and wherein in institute
It states and opening is provided in pedestal；
Spring element has the second end for the side wall that the intracorporal first end of the shell is arranged in and is coupled to the shell；
And
Interior electrode is arranged between the thermode and the pedestal of the shell, and the interior electrode includes extending through institute
The terminal tab of the opening in pedestal is stated, wherein the terminal tab includes third terminal, the third terminal can be operated
To be maintained and the bullet via the hot link material when the hot link material being arranged along the terminal tab is lower than fusing point
The direct physical contact of the first end of spring element.
20. TMOV component as claimed in claim 19, the shell of the terminal assemblies further include:
The supporting element extended from the inner surface of the pedestal, the opening of the supporting element in the pedestal and described interior
The third terminal of electrode extends；And
The tegmental wall extended from the inner surface of the pedestal, the tegmental wall receive the Second terminal contact pin of the second inner electrode.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/106133 WO2019071588A1 (en) | 2017-10-13 | 2017-10-13 | Thermally protected metal oxide varistor |
| CNPCT/CN2017/106133 | 2017-10-13 | ||
| PCT/CN2017/118604 WO2019071841A1 (en) | 2017-10-13 | 2017-12-26 | Thermally protected metal oxide varistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109923625A true CN109923625A (en) | 2019-06-21 |
| CN109923625B CN109923625B (en) | 2021-01-15 |
Family
ID=66100202
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780018399.8A Active CN110024054B (en) | 2017-10-13 | 2017-10-13 | Thermally protected metal oxide piezoresistor |
| CN201780018400.7A Active CN109923625B (en) | 2017-10-13 | 2017-12-26 | Thermally protected metal oxide piezoresistor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780018399.8A Active CN110024054B (en) | 2017-10-13 | 2017-10-13 | Thermally protected metal oxide piezoresistor |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN110024054B (en) |
| WO (2) | WO2019071588A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116052967A (en) * | 2018-04-04 | 2023-05-02 | 东电化电子元器件(珠海保税区)有限公司 | Thermal protector for piezoresistor |
| CN117894535A (en) * | 2022-10-14 | 2024-04-16 | 东莞令特电子有限公司 | Thermal protection metal oxide varistor |
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- 2017-12-26 CN CN201780018400.7A patent/CN109923625B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007105066A1 (en) * | 2006-03-14 | 2007-09-20 | Kiwa Spol. S R.O. | Device for overvoltage protection |
| CN102132467A (en) * | 2008-08-25 | 2011-07-20 | 德恩及索恩两合股份有限公司 | Surge arrester with at least one arrester element |
| EP2511915A1 (en) * | 2011-04-13 | 2012-10-17 | Epcos Ag | Electric device |
| CN202678007U (en) * | 2012-03-12 | 2013-01-16 | 何朝霞 | Varistor with self-protection function |
| US20160111871A1 (en) * | 2014-10-15 | 2016-04-21 | Schneider Electric USA, Inc. | Surge protection device having two part ceramic case for metal oxide varistor with isolated thermal cut off |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110024054B (en) | 2021-06-29 |
| WO2019071588A1 (en) | 2019-04-18 |
| WO2019071841A1 (en) | 2019-04-18 |
| CN110024054A (en) | 2019-07-16 |
| CN109923625B (en) | 2021-01-15 |
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