CN205335209U

CN205335209U - Multifunctional protection device and electronic device

Info

Publication number: CN205335209U
Application number: CN201520962040.4U
Authority: CN
Inventors: 陈莎莉; 陈聪文
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-27
Filing date: 2015-11-26
Publication date: 2016-06-22
Anticipated expiration: 2025-11-26
Also published as: TWM508780U

Abstract

The utility model provides a multi-functional protection device and electron device. A multifunctional protective device includes a substrate, an upper electrode, a lower electrode, a heat generating component, and at least one fusible conductor. The upper electrode is arranged on the substrate and comprises a first upper electrode and a second upper electrode. The lower electrode is disposed on the substrate and includes a third lower electrode. The heat generating component is disposed on the substrate, and has one end electrically connected to the second upper electrode and the other end electrically connected to the third lower electrode. The fusible conductor electrically connects the first upper electrode and the second upper electrode. The utility model discloses a multi-functional protection device can provide multiple protect function, like the combined type protect function of combinations such as overcurrent, overvoltage and excess temperature.

Description

Multifunctional protection device and electronic installation

Technical field

This utility model relates to a kind of multifunctional protection device and electronic installation; the multifunctional protection device being especially applicable in portable electronic products secondary battery or electronic component and electronic installation, can be used to, with main circuit matching design, the multinomial defencive function that prevents as overcurrent, overvoltage and excess temperature etc. combine。

Background technology

Known protection element such as TaiWan, China letters patent book number: proposed a kind of protection element such as TWI385695B1, TWI385696B1, TWI452592B, TWI456617B, TWI456618B, this most structure of protection element comprises a substrate；Upper electrode；Target (or first extension)；Bottom electrode；Connect the termination electrode of up and down electrode and connect the termination electrode of bottom electrode and target (or first extension)；Metal derby；And heater (heating resistor) designs relevant protection element, its equivalent circuit uses two fuse element (or electrical fuse element) series connection to form with a heater (heating resistor), this protection element is that heater is designed the lower surface at substrate, problem one: when overvoltage event occurs, heater generates heat, the thickness of substrate more thickness then thermal resistance is bigger, next to that the thermal conductivity of baseplate material, the thermal conductivity of isolation material is not good, the material then cost higher to thermal conductivity is substantially improved, and thermal conductivity to be still below metal material a lot, the target conducted to upper surface of the hot quick and concentration therefore how heater produced or the first extension, will not be uniformly spread to again in substrate or other electrodes, so some substrates have added some insulating barriers or low heat-conducting part, or the material in substrate is divided into the design of high thermal conductivity and low heat-conducting part, in order to allow the heat energy that heater produces quickly and intensively by heat pass to target or the first extension, board structure is excessively complicated and cost increase is many, problem two: because heater is at the lower surface of substrate, must via bottom electrode, lateral electrode, upper electrode or target or the first extension connect metal derby, because of bottom electrode, lateral electrode, upper electrode or target or the first extension are all exposed at substrate surface, and particularly lateral electrode (or termination electrode) is easiest to be subject to the impact of external temperature, or the heat energy that easily scatters and disappears, the heat that heater produces is made to need more time or more heat energy ability fuse metal block, the time namely protecting the protection act of element is elongated or slow。Problem three: when the rated current protecting element to need increases; the sectional area of metal derby or low-melting-point metal certainly will be strengthened; namely the thickness of metal derby or low-melting-point metal needs to increase; the required heat energy produced of such heater is just more difficult to quick fuse metal block or low-melting-point metal, even makes the disabler of protection element。

Summary of the invention

This utility model designs at second surface or lower surface to solve heater, substrate heat conduction is not good, the lateral electrode of the problem and electrical connection heater and target (or first extension) that cannot focus on target (or first extension) is exposed at substrate-side surface, the heat that heater produces easily is subject to the impact of external environment temperature or the problem of heat loss in the path of transmission, and the low-melting-point metal of the same thickness or metal derby, add the time of heater fusing low-melting-point metal or metal derby, the problem that even cannot fuse。This utility model is for providing more various selection; the design of the fusible conductor of multifunctional protection device of the present utility model and upper electrode can be divided into two kinds; the first is that its equivalent circuit comprises an electric fuse (Fuse) element, and fusible conductor is only electrically connected on first electrode on electrode and second (not having target or the first extension)。The second is electric fuse (Fuse) element that its equivalent circuit comprises two series connection; electrode on electrode, thermal-arrest electrode and second in fusible conductor electrical connection first; and thermal-arrest electrode be arranged in substrate and extend on first on electrode and second between electrode substrate on, the designer of application circuit can be complied with and be actually needed the multifunctional protection device selecting the various selection of this utility model。

This utility model provides a kind of multifunctional protection device to include substrate, and substrate is single layer dielectrics substrate or multilayer insulation substrate；Upper electrode, is arranged on substrate, comprises on first electrode on electrode and second；Bottom electrode, is arranged on substrate, comprises the 3rd bottom electrode；Hot generation component, is arranged on substrate, electrode in one end electrical connection second of hot generation component, other end electrical connection the 3rd bottom electrode of hot generation component；And at least one fusible conductor, it is arranged on electrode, and electrode on electrode and second in electrical connection first。What is particularly worth mentioning is that in one end of hot generation component electrical connection second, the method for electrode is to be electrically connected electrode on hot generation component and second via the conducting shell in substrate, so the path of heat transmission is susceptible to the impact of external environment temperature, previous technology is exposed at the side surface of substrate because of heat transfer path, easily by the impact of external environment temperature, make heat energy loss。On second, the shape of electrode can be arbitrary shape or figure, it is preferred that this on second electrode comprise thermal-arrest portion, narrow and external connection portion。Its equivalent circuit of multifunctional protection device that this utility model provides comprises an electric fuse (Fuse) element and a heating resistor。

In an embodiment of the present utility model, on above-mentioned multifunctional protection device wherein said second, electrode also comprises interior thermal-arrest portion, and on second, the interior thermal-arrest portion of electrode is arranged in substrate or extends in substrate。Interior thermal-arrest portion is apart from hot generation component or heater very near; can heat energy produced by the hot generation component of gathering quickly; and it is transmitted to electrode on second on the surface of the substrate, it is possible to and fusing fusible conductor quickly, reach to improve or shorten the time of multifunctional protection device protection act。

In an embodiment of the present utility model, fusible conductor is the structure of monolayer or multilamellar, and the structure of multilamellar is such as hierachical structure or clad type structure, and the material of its adjacent each layer has different melting temperatures。

In an embodiment of the present utility model; described multifunctional protection device also comprises auxiliary material; auxiliary material is arranged on second on electrode or on electrode and fusible conductor on fusible conductor or on second, and the fusing point of auxiliary material or liquefaction point temperature are lower than the fusing point of fusible conductor or liquefaction point temperature。

In an embodiment of the present utility model; above-mentioned multifunctional protection device; also comprise adsorption line and auxiliary material; adsorption line is arranged on second the one end on electrode and extends across the other end that fusible conductor is contrary on electrode to second; auxiliary material is arranged between adsorption line and fusible conductor; and in adsorption line and second between electrode, and the fusing point of this auxiliary material or liquefaction point temperature are lower than the fusing point of fusible conductor or liquefaction point temperature。

In an embodiment of the present utility model, above-mentioned multifunctional protection device, also comprise insulation crust and lower insulating barrier, this lower insulating barrier is arranged on hot generation component, and this insulation crust is arranged on substrate, and covers all objects of upper surface of base plate。

In an embodiment of the present utility model, above-mentioned multifunctional protection device, wherein fusible conductor comprises wide thin section and narrow thickness portion, electrode in wide thin section electrical connection second, electrode in narrow thickness portion electrical connection first。

This utility model provides a kind of multifunctional protection device, including: substrate, it is multilayer insulation substrate, comprises conducting shell, be arranged in substrate；Upper electrode, is arranged on substrate, comprises on first electrode on electrode and second；Thermal-arrest electrode, on the substrate being arranged in substrate and extending on first on electrode and second between electrode；Bottom electrode, is arranged on substrate, including the 3rd bottom electrode；Hot generation component, is arranged on substrate, and one end of hot generation component is electrically connected thermal-arrest electrode via conducting shell, and the other end of hot generation component is electrically connected the nearest distance of the 3rd bottom electrode, thermal-arrest electrode and hot generation component between 0.001～0.1mm；And at least one fusible conductor, it is arranged on electrode and thermal-arrest electrode, and electrode on electrode, thermal-arrest electrode and second in electrical connection first。The technical characteristic of thermal-arrest electrode is that it is arranged in substrate and extends on substrate, in substrate, the material of thermal-arrest electrode is metal material, there is significantly high pyroconductivity, before relatively, the pyroconductivity of the substrate in technology is high a lot, and apart from hot generation component very near, can heat energy produced by the hot generation component of gathering quickly, and be transmitted on the surface of substrate, it is possible to fusing fusible conductor quickly。Its equivalent circuit of multifunctional protection device of the present utility model comprises electric fuse (Fuse) element and a heating resistor of two series connection, and one end of this heating resistor is electrically connected common contact or the concatenation point of two inline fuse (Fuse) element。

This utility model provides a kind of multifunctional protection device, including: LTCC (LTCC) substrate, it it is multilayer insulation substrate, comprise electrode on first, thermal-arrest electrode, electrode on second, conducting shell and multiple perforation, on first, on electrode and second, electrode is arranged on substrate, on the substrate that thermal-arrest electrode is arranged in substrate and extends on first on electrode and second between electrode, conducting shell is arranged in different perforations from segment set thermode, this LTCC (LTCC) substrate is to be fired into altogether with process technique and sintering process with LTCC (LTCC) material, sintering temperature is between 100 DEG C to 1100 DEG C, and the pyroconductivity of the insulant of this LTCC (LTCC) substrate is less than 5W/m.K, it is preferably less than 2W/m.K；3rd bottom electrode, is arranged on substrate；Hot generation component, is arranged on substrate, and one end of this hot generation component is electrically connected thermal-arrest electrode via conducting shell, and the other end of hot generation component is electrically connected the nearest distance of the 3rd bottom electrode, thermal-arrest electrode and hot generation component between 0.001～0.1mm；And at least one fusible conductor, it is arranged on first on electrode, thermal-arrest electrode and second on electrode, and electrode on electrode, thermal-arrest electrode and second in electrical connection first。

In an embodiment of the present utility model; above-mentioned multifunctional protection device; wherein this fusible conductor comprises the narrow thickness portion at wide thin section and the two ends of centre, and middle wide thin section is electrically connected thermal-arrest electrode, and the narrow thickness portion at two ends is not each electrically connected on first electrode on electrode and second。

In an embodiment of the present utility model, above-mentioned multifunctional protection device, also comprise a suppression electric arc layer, on the fusible conductor surface being arranged on first on electrode and between two electrodes。

The kind of substrate of the present utility model can comprise organic system substrate or glass epoxy substrate (as: FR4 or FR5) or glass epoxy tellite or inorganic system substrate or ceramic substrate (such as ltcc substrate or HTCC substrate) etc., preferably comprise aluminum oxide substrate or LTCC (LTCC) substrate, the best or the substrate being best suitable for all multifunctional protection devices of this utility model are LTCC (LTCC) substrates, it is that the material with LTCC (LTCC) makes with processing procedure, its processing procedure has such as purgation step: adopts and comprises inorganic ceramic powder, glass dust becomes the slurry of pureed with material mixing such as organic binder bonds, many pieces of thin raw embryo or an embryo of improving people's living condition is made after scraper shaping and drying；Required perforation is got at the thin raw embryo of each layer；Insert conducting shell material, be available between electrode and bottom electrode or the transmission of electric current between interior electrode and upper electrode or between interior electrode and thermal-arrest electrode and heat energy；Inner electrode, hot generating element, upper electrode material, lower electrode material are imprinted on above the thin raw embryo of required each layer by recycling screen painting；Again raw for multi-layer thin embryo is stacked；After burn down into altogether with the temperature one or many lower than 1100 DEG C then through sintering furnace。

This utility model also proposes a kind of electronic installation, including: power supply unit or load；Energy storage device；Abnormality detection control circuit；Switch element；And such as multifunctional protection device described in the utility model。Wherein power supply unit or load are such as responsible for providing the load of the charging voltage power supply unit with electric current or reception discharge current；Wherein energy storage device comprise one or more can the battery of discharge and recharge；Wherein abnormality detection control circuit is responsible for voltage or the temperature of detection energy storage device or protected element, if there being exception, then exports a signal to switch element；Wherein when normal, switch element closes the current path of the hot generation component in multifunctional protection device, and when receiving the signal of abnormality detection control circuit, switch element opens the current path of hot generation component, and hot generation component generates heat because electric current flows through；Wherein electrode electrical power source supply or load on the first of multifunctional protection device, electrode electrical connection energy storage device on second, the 3rd bottom electrode electrical connection switch element, abnormal current path between electrode on electrode and second in fusing first when occurring。

Accompanying drawing explanation

Fig. 1 is the equivalent circuit diagram of the multifunctional protection device 100 of first embodiment。

Figure 1A is the schematic top plan view of the multifunctional protection device 100 of this utility model first embodiment。

Figure 1B is the elevational schematic view of the multifunctional protection device 100 of this utility model first embodiment。

Fig. 1 C is shown as the generalized section of the multifunctional protection device 100 X X ' along the line of Figure 1A。

Fig. 1 D is shown as the generalized section of the multifunctional protection device 100 Y Y ' along the line of Figure 1A。

Fig. 1 E is the schematic top plan view of electrode variation on second in this utility model first embodiment。

Fig. 1 F is the schematic top plan view of the multifunctional protection device 100b of this utility model the second embodiment。

Fig. 1 G is shown as the generalized section of the multifunctional protection device 100 X X ' along the line of Fig. 1 F。

Fig. 1 G-a, Fig. 1 G-b, Fig. 1 G-c, Fig. 1 G-d, Fig. 1 G-e, Fig. 1 G-f, Fig. 1 G-g, Fig. 1 G-h, Fig. 1 G-i are the making step schematic diagrams that substrate uses LTCC LTCC。

Fig. 1 H is shown as the generalized section of the multifunctional protection device 100 Y Y ' along the line of Figure 1A。

Fig. 1 I is the generalized section of the multifunctional protection device 100c of this utility model the 3rd embodiment。

Fig. 1 J is the generalized section of the multifunctional protection device 100c of this utility model the 3rd embodiment。

Fig. 1 K is the generalized section of the multifunctional protection device 100d of this utility model the 3rd embodiment。

Fig. 1 L is the generalized section of the multifunctional protection device 100e of this utility model the 4th embodiment。

Fig. 1 M is the generalized section of the multifunctional protection device 100f of this utility model the 5th embodiment。

Fig. 1 N is the schematic top plan view of the multifunctional protection device 110g of this utility model sixth embodiment。

Fig. 1 O is the elevational schematic view of the multifunctional protection device 100g of this utility model sixth embodiment。

Fig. 1 P is shown as the generalized section of the multifunctional protection device 100g X X ' along the line of Fig. 1 N。

Fig. 1 Q is shown as the generalized section of the multifunctional protection device 100g Y Y ' along the line of Fig. 1 N。

Fig. 1 R is the generalized section of the multifunctional protection device 110h of this utility model the 7th embodiment。

Fig. 2 is the equivalent circuit diagram of the multifunctional protection device 100g of sixth embodiment。

Fig. 3-1 shows two-layer clad type fusible conductor schematic diagram。

Fig. 3-2 shows three layers clad type fusible conductor schematic diagram。

Fig. 3-3 shows three layers layer-stepping fusible conductor schematic diagram。

The double-layer separate laminar fusible conductor schematic diagram that Fig. 3-4, Fig. 3-5, Fig. 3-6, Fig. 3-7, Fig. 3-8, Fig. 3-9, Fig. 3-10 display is different。

Fig. 4 is the block diagram of a kind of electronic installation 1 of the present utility model。

Fig. 4-1 is the block diagram of a kind of electronic installation 2 of the present utility model。

Accompanying drawing labelling:

100,100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h: multifunctional protection device

110,110b, 110g: substrate

11: upper surface 12: lower surface

13: second layer insulated substrate upper surface

111b, 111g: ground floor insulated substrate

112b, 112g: second layer insulated substrate

111b1,111b2,111b3,111b4: the raw embryo of ground floor insulation

117: perforation 118: conducting shell

120,120a, 120b, 120g: upper electrode

121, electrode on 121g: the first

122,122a, 122b, 122g: electrode on second

122a1,122b1: external connection portion 122a2,122b2: narrow

122a3,122b3: thermal-arrest portion 122b4: interior thermal-arrest portion

125: thermal-arrest electrode

127: adsorption line 128: auxiliary material

129: suppress electric arc layer

130: bottom electrode

170,170f, 170g: fusible conductor

170f1: wide thin section 170f2: narrow thickness portion

170g1: the right fusible conductor 170g2: left side fusible conductor

173h: the narrow thickness portion 174h at two ends: middle wide thin section

170 (T1), 170 (T4), 170 (T4a), 170 (T4b), 170 (T4c), 170 (T4d) 170 (T4e), 170 (T7), 170 (T7a): ground floor fusible conductor

170 (T2), 170 (T5), 170 (T5a), 170 (T5b), 170 (T5c), 170 (T5d), 170 (T5e), 170 (T8), 170 (T8a): second layer fusible conductor

170 (T3), 170 (T6): third layer fusible conductor

180: hot generation component

188: hot generating element 181: interior electrode

189: lower insulating barrier

190: insulation crust

20: power supply unit or load 21: energy storage device

22: abnormality detection control circuit 23: switch element

D: the distance between adsorption line and fusible conductor

H1: the distance between interior thermal-arrest portion and hot generating element

H2: the distance between thermal-arrest electrode and hot generating element

1,2: electronic installation

Detailed description of the invention

It is further understood that feature of the present utility model and technology contents for enabling, refers to following relevant embodiment, and coordinate accompanying drawing to be described in detail below:

Figure 1A is the schematic top plan view of the multifunctional protection device 100 of this utility model first embodiment。Figure 1B is the elevational schematic view of the multifunctional protection device 100 of this utility model first embodiment。Fig. 1 C is shown as the generalized section of the multifunctional protection device 100 X X ' along the line of Figure 1A。Fig. 1 D is shown as the generalized section of the multifunctional protection device 100 Y Y ' along the line of Figure 1A。Please also refer to Figure 1A, Figure 1B, Fig. 1 C Yu Fig. 1 D, the multifunctional protection device 100 of the present embodiment includes substrate 110, and this substrate 110 can be a single layer dielectrics substrate or a multilayer insulation substrate；Upper electrode 120, is arranged on substrate 110, comprises on first electrode 122 on electrode 121 and second；Bottom electrode 130, is arranged on substrate 110, comprises the 3rd bottom electrode 133；Hot generation component 180, is arranged on substrate 110, electrode 122 in one end electrical connection second of this hot generation component 180, other end electrical connection the 3rd bottom electrode 133；And fusible conductor 170 or multiple fusible conductor 170 (not shown), it is arranged on electrode 120, and electrode 122 on electrode 121 and second in electrical connection first。Specifically, substrate 110 comprises a perforation 117 or multiple perforation 117 (Figure 1A shows three perforations) and conducting shell 118, this perforation 117 connects upper surface 11 and the lower surface 12 of substrate, this conducting shell 118 is arranged in perforation 117, substrate 110 can be a single layer dielectrics substrate or a multilayer insulation substrate, the material of substrate 110 includes inorganic ceramic material, LTCC (LTCC), glass ceramics, glass dust, aluminium oxide, aluminium nitride, zirconium oxide, silicon nitride, the combination of one of them or its part such as boron nitride and organic binder bond, its method can adopt and comprise required substrate 110 material mixing and become the slurry of pureed, many pieces of thin raw embryo or an embryo of improving people's living condition is made after scraper shaping and drying。Perforation 117 can machine drilling, thunder bores, die punching or other the art conventional techniques means get required hole at the raw embryo of each layer。The material of conducting shell 118 comprises the combination of one of them or its part such as gold, silver, nickel, stannum, lead, platinum, copper; the material of conducting shell 118 is inserted in the perforation 117 of each layer green compact; this conducting shell 118 is responsible for electrical connection and electrode 122 on the hot generation component 180 and second of thermally coupled; because this conducting shell 118 is arranged in substrate 110; it is not exposed at the surface of substrate 110; so will not be affected because of the temperature of external environment (as: heat loss or heat radiation), and increase the movement time of multifunctional protection device 100。Hot generation component 180 includes electrode 181 in a hot generating element 188 and, the material of hot generating element 188 includes ruthenic oxide (RuO2), ruthenium-oxide, ruthenium, copper, palladium, platinum, platinum, molybdenum, tungsten, organic bond or inorganic bonding agent etc. one of them or wherein part combination, the material of hot generating element 188 can be made slurry, by the graphic printing of hot generating element 188 on the lower surface 12 of substrate 110, the material of interior electrode 181 comprises copper, stannum, plumbous, ferrum, nickel, platinum, tungsten, palladium, silver, gold waits the combination of one of them or its part, can by the material of interior electrode 181 and graphic printing on the lower surface 12 of substrate 110, and cover in the hot generating element 188 of part with on conducting shell 118 material, the one end making hot generating element 188 is electrically connected with conducting shell 118 via interior electrode 181。Upper electrode 120 comprises on first electrode 122 on electrode 121 and second, and the material of upper electrode 120 comprises copper, stannum, plumbous, ferrum, nickel, platinum, tungsten, palladium, silver, gold waits the combination of one of them or its part, can the figure (as shown in Figure 1A) of electrode 112 on electrode on first 121 and second be printed on the upper surface 11 of substrate 110 printing technology, and electrode 112 covers on conducting shell 118 material on second, make on second electrode 112 via conducting shell 118, one end of interior electrode 181 and hot generating element 188 is electrically connected, on first, on electrode 121 and second, the figure of electrode 112 can be any shape, it is worth mentioning at this point that the deformation design of electrode 112 on second: electrode 122a comprises thermal-arrest portion 122a3 on second as referring to figure 1e, narrow 122a2 and external connection portion 122a1, thermal-arrest portion 122a3 is characterized by assembling the hot produced heat of generation component 180 and being responsible for fusing fusible conductor 170, narrow 122a2 is characterized by isolation or reduces the loss of thermal-arrest portion 122a3 heat energy or be subject to the impact of external connection portion 122a1 temperature, and external connection portion is characterized by being electrically connected external circuit。Bottom electrode 130 comprises the 3rd bottom electrode 133, the material of bottom electrode 130 comprises the combination of one of them or its part such as copper, stannum, lead, ferrum, nickel, platinum, tungsten, palladium, silver, gold, printing technology can by the material of the 3rd bottom electrode 133 and graphic printing on the lower surface 12 of substrate 110, and cover in the hot generating element 188 of part, make the 3rd bottom electrode 133 be electrically connected the other end of hot generating element 188, and external circuit can be electrically connected。Fusible conductor 170 is configured on first on electrode 121 and second on electrode 122, and electrode 122 (Figure 1A shows a fusible conductor 170, certainly may also be multiple fusible conductor 170, does not show) on electrode 121 and second on electrical connection first。Fusible conductor 170 can be a monolayer or a multiple structure, if fusible conductor 170 is a multiple structure, please also refer to Fig. 3-1, Fig. 3-2, Fig. 3-3, Fig. 3-4, Fig. 3-5, Fig. 3-6, Fig. 3-7, Fig. 3-8, Fig. 3-9 and Fig. 3-10, the structure of its multilamellar can be clad type or layer-stepping, if Fig. 3-1 is two-layer clad type, ground floor fusible conductor 170 (T1) is coated with second layer fusible conductor 170 (T2)。If Fig. 3-2 is three layers clad type, ground floor fusible conductor 170 (T1) is coated with second layer fusible conductor 170 (T2), and second layer fusible conductor 170 (T2) is coated with third layer fusible conductor 170 (T3)。If Fig. 3-3 is three layers layer-stepping, wherein ground floor fusible conductor 170 (T4) is thinner than second layer fusible conductor 170 (T5) with third layer fusible conductor 170 (T6)。Such as the double-layer separate laminar that Fig. 3-4 and Fig. 3-5 is two kinds different, wherein ground floor fusible conductor 170 (T4a), 170 (T4b) thickness than second layer fusible conductor 170 (T5a, 170 (T5b) thickness thin, ground floor fusible conductor 170 (T4a) is arranged on second layer fusible conductor 170 (T5a), another layer-stepping fusible conductor 170, ground floor fusible conductor 170 (T4b) be arranged in the above of second layer fusible conductor 170 (T5b) with on two side surfaces。It should be noted that, refer to Fig. 3-7, the area of the ground floor fusible conductor 170 (T4d) in layer-stepping can less than or equal to the area of second layer fusible conductor 170 (T5d), being exactly that ground floor fusible conductor 170 (T4d) is only arranged on the second layer fusible conductor 170 (T5d) of part, this feature is also suitable on the fusible conductor of other layer-steppings。Fusible conductor in Fig. 3-6 and Fig. 3-8 is comprise the wide thin section of centre and the narrow thickness portion at two ends and is double-layer separate laminar, wherein ground floor fusible conductor 170 (T4c), 170 (T4e) thickness thinner than the thickness of second layer fusible conductor 170 (T5c), 170 (T5e)。Fusible conductor in Fig. 3-9 is double-layer separate laminar, and wherein the thickness of ground floor fusible conductor 170 (T7) is thicker than the thickness of second layer fusible conductor 170 (T8)。Fusible conductor in Fig. 3-10 is comprise the wide thin section of centre and the narrow thickness portion at two ends and is double-layer separate laminar, and wherein the thickness of ground floor fusible conductor 170 (T7a) is thicker than the thickness of second layer fusible conductor 170 (T8a)。Its adjacent each layer melting temperature of the fusible conductor 170 of above multiple structure can be different (T1 to Txx represents melting temperature), such as: ground floor fusible conductor 170 (T1) is different from the melting temperature of second layer fusible conductor 170 (T2), second layer fusible conductor 170 (T2) is different from the melting temperature of third layer fusible conductor 170 (T3), and in fusible conductor 170, the material of each layer or material include one of them or the combination of its part such as gold, silver, copper, aluminum, palladium, platinum, stannum, lead, indium, bismuth, antimony。Additionally, in the present embodiment, fusible conductor 170 includes tin cream with its material of material of upper electrode 120 electrical connection, elargol, stannum, copper, silver, gold, bismuth, sn-ag alloy, leypewter ... wait the alloy that one of them or its part are combined into, its method is that thereby material can fix fusible conductor 170 on first on electrode 121 and second on electrode 122, these methods that all can be considered electrical connection and one of material, but it is not limited thereto, welding manner that any the art is usual or the method for technique for fixing or electrical connection, the material of any electrical connection can also do not needed, as long as electrical connection can be reached all to be belonged within scope of the present utility model。Fig. 1 is the equivalent circuit diagram of the multifunctional protection device 100 of first embodiment, comprises an electric fuse (Fuse) element (fusible conductor 170) and a heating resistor (hot generation component 180)。Wherein main symbol relevant to Figure 1A, 1B, 1C and 1D marks。

Fig. 1 F is the schematic top plan view of the multifunctional protection device 100b of this utility model the second embodiment。Fig. 1 G is shown as the generalized section of the multifunctional protection device 100 X X ' along the line of Fig. 1 F。Fig. 1 H is shown as the generalized section of the multifunctional protection device 100 Y Y ' along the line of Figure 1A。Please also refer to Fig. 1 F, Fig. 1 G and Fig. 1 H; the multifunctional protection device 100b of the present embodiment is similar to the multifunctional protection device 100 of first embodiment; main difference electrode on second also comprises thermal-arrest portion 122b4 in, is arranged in substrate 110b or extends in substrate 110b。Interior thermal-arrest portion 122b4 is responsible for assembling heat energy produced by hot generation component 180 and conducts to second on substrate 110b upper surface 11 the thermal-arrest portion 122b3 of electrode 122b on electrode 122b or second。A second layer insulated substrate 112b is had between interior thermal-arrest portion 122b4 and hot generating element 188, distance H1 between the two is less than 0.15mm, the structure of interior thermal-arrest portion 122b4 can any shape and size, preferably interior thermal-arrest portion 122b4 is apart from the nearest plane of hot generating element 188, its area is similar to the area of hot generating element 188, and distance H1 between the two is between 0.001～0.1mm, in so, the thermal resistance between thermal-arrest portion 122b4 and hot generating element 188 can be minimum, conduction of heat can be preferably, on on substrate 110b second, heat energy produced by the hot generating element 188 of electrode 122b gathering is also faster。When hot generation component 180 adstante febre, because of the present embodiment multifunctional protection device 100b second on electrode 122b comprise thermal-arrest portion 122b4 in, so can fuse more quickly fusible conductor 170 than electrode 122 on second in first embodiment。The multifunctional protection device 100b of the present embodiment also comprises auxiliary material 128, be arranged on second on electrode 122b or on fusible conductor 170 or on second electrode 122b with on fusible conductor 170, its main the acting as of this auxiliary material 128 prevents the surface oxidation of electrode 122b on fusible conductor 170 and second, and when hot generation component 180 adstante febre or fusible conductor 170 adstante febre, auxiliary material 128 can more Zao than fusible conductor 170 melt or Zao liquefaction, contribute to the melted of fusible conductor 170, wettability (Wetting) and the absorption affinity on electrode 122b surface on second can also be promoted, the fusible conductor 170 melted after a while is made to disconnect with not melted fusible conductor 170 rapidly, promptly it is attached on second on electrode 122b with auxiliary material 128 congruent melting and diffusion。The material of auxiliary material 128 includes the complex of one of them or its part combination such as stannum, copper, silver, gold, lead, bismuth, scaling powder, rosin resin, surfactant, activator, softening agent, organic solvent。Multifunctional protection device 100b of the present utility model is in application, it is preferred that be, the auxiliary fusing point of material 128 or liquidus point temperature are lower than the fusing point of fusible conductor 170 or liquidus point temperature。Upper electrode 120b in the multifunctional protection device 100b of the present embodiment, conducting shell 118 can use the substrate 110b material of LTCC LTCC, conducting shell 118 material makes a composite base plate or LTCC ltcc substrate with upper electrode 120 material and processing procedure, please also refer to Fig. 1 G-a, Fig. 1 G-b, Fig. 1 G-c, Fig. 1 G-d, Fig. 1 G-e, Fig. 1 G-f, Fig. 1 G-g, Fig. 1 G-h and Fig. 1 G-i, its step is as follows: adopts and comprises inorganic ceramic powder, the baseplate materials such as glass dust and organic binder bond are mixed into the slurry of pureed, the raw embryo 111b1 of many pieces of ground floor insulation is made after scraper shaping and drying, 111b2, 111b3, 111b4 and second layer insulated substrate 112b such as Fig. 1 G-f and Fig. 1 G-g or ground floor insulated substrate 111b and second layer insulated substrate 112b such as Fig. 1 G-a and Fig. 1 G-b；Required perforation 117 such as Fig. 1 G-f, Fig. 1 G-g, Fig. 1 G-b and Fig. 1 G-a is got in the thin raw embryo of each layer；Electrode 122b material on conducting shell 118 material and second is inserted perforation 117, the transmission of electric current between electrode 122b or heat energy between the thermal-arrest portion 122b3 and interior thermal-arrest portion 122b4 that are available on second electrode 122b or on interior electrode 181 and second；Upper electrode 120b material is imprinted on above the thin raw embryo of required each layer by recycling screen painting, if Fig. 1 G-c is by the thermal-arrest portion 122b3 of electrode 122b on electrode on first 121 and second, narrow 122b2 and external connection portion 122b1 is imprinted on substrate 110b or the upper surface 11 of ground floor insulated substrate 111b, as interior thermal-arrest portion 122b4 is imprinted on the upper surface 13 of second layer insulated substrate 112b by Fig. 1 G-d, if Fig. 1 G-h is by the thermal-arrest portion 122b3 of electrode 122b on electrode on first 121 and second, narrow 122b2 and external connection portion 122b1 is imprinted on the raw embryo 111b1 of ground floor insulation, the interior thermal-arrest portion 122b4 of electrode 122b on second is imprinted on the raw embryo 111b4 of ground floor insulation；Such as Fig. 1 G-h and Fig. 1 G-i again by ground floor insulation life embryo 111b1,111b2,111b3,111b4 and second layer insulated substrate 112b or as ground floor insulated substrate 111b and second layer insulated substrate 112b is stacked such as Fig. 1 G-e by Fig. 1 G-a and Fig. 1 G-b；After once burn down into altogether with the temperature lower than 1100 DEG C then through sintering furnace, after hotter generating element 188 and interior electrode 181 and bottom electrode 130 are imprinted on the lower surface 12 of substrate 110b；After sintered with the temperature lower than 1100 DEG C then through sintering furnace。The basal plate making process of LTCC LTCC is the conventional techniques means of the art; but it is used in the manufacture of multifunctional protection device by this utility model; the all of embodiment of this utility model all can manufacture the different substrate 110x of all multifunctional protection devices of this utility model by the correlation technique of LTCC LTCC, is finally fixed on upper electrode 120b by fusible conductor 170 again。

Fig. 1 I is the generalized section of the multifunctional protection device 100c X X ' along the line of this utility model the 3rd embodiment。Fig. 1 J is the generalized section of the multifunctional protection device 100c Y Y ' along the line of this utility model the 3rd embodiment。Please also refer to Fig. 1 I, Fig. 1 J, Fig. 1 G and Fig. 1 H, the multifunctional protection device 100c of the present embodiment and the multifunctional protection device 100b of the second embodiment similar, main difference exists: the multifunctional protection device 100c of the present embodiment also comprises adsorption line 127。One end of the thermal-arrest portion 122b3 that this adsorption line 127 is arranged on second electrode 122b and the other end extended across above fusible conductor 170 and auxiliary material 128 to thermal-arrest portion 122b3, partial adsorbates line 127 above fusible conductor 170, distance D between itself and fusible conductor 170 is less than 0.3mm, it is preferably between 0.001mm to 0.15mm, this adsorption line 127 is a monolayer or the structure of a multilayer coating structure formula, and its each layer material comprises copper, stannum, plumbous, ferrum, nickel, aluminum, titanium, platinum, tungsten, zinc, iridium, cobalt, palladium, silver, gold, the alloy that one of them or its part such as platinum are combined into is (such as: adonic, nickeltin) or the multiple layer metal that is combined into of its part is (such as: copper is tin plating, copper is gold-plated), this adsorption line 127 can be welded by tin cream, electric arc welds, laser welds, thermal compression welding, the manufacture methods such as ultrasound welding, two ends by adsorption line 127, two end opposite that are fixing and that be electrically connected on second electrode 122b or thermal-arrest portion 122b3, so it is not limited thereto, welding manner that any the art is usual or the method for technique for fixing or electrical connection, can reach fixing and electrical connection and all belong within scope of the present utility model。The adsorption line 127 of the present embodiment is a cylinder metal line in shown diagram, it is shaped like arc or arch form, but it is not limited thereto, this adsorption line 127 can also be the metal wire of a cuboid (not shown), its shape can also be ㄇ type (not shown), and the surface of partial adsorbates line 127 can also be connected (distance 0mm) with the surface of part fusible conductor 170, so this adsorption line 127 crosses over fusible conductor 170 and the shape assisting material 128 can be any shape, it itself can be the thermal conductive wire of any shape, the surface of this adsorption line 127 can be connected with the surface of fusible conductor 170 or be not connected to, all belong within scope of the present utility model。This auxiliary material 128 is arranged between adsorption line 127 with fusible conductor 170 and actual physics is connected adsorption line 127 and fusible conductor 170, maybe this auxiliary material 128 is arranged between adsorption line 127 and fusible conductor 170 and between the thermal-arrest portion 122b3 of electrode 122b in adsorption line 127 and second, and actual physics connects adsorption line 127 and fusible conductor 170, also actual physics connects the thermal-arrest portion 122b3 of electrode 122b in adsorption line 127 and second。This its function of auxiliary material 128 is can to have the surface oxidation of surface and the adsorption line 127 preventing fusible conductor 170, conduction heat energy and the effect fluxed simultaneously; by surface tension and capillarity; the fusible conductor 170 guiding melted (or liquefaction) is adsorbed in adsorption line 127; also the fusible conductor 170 that can guide melted (or liquefaction) flows to the part peripheral for thermal-arrest portion 122b3 of electrode 122b on second; separating or disconnection of the fusible conductor 170 accelerated and do not melt, reduces the movement time needed for overvoltage or overheat protector。

Fig. 1 K is the generalized section of the multifunctional protection device 100d Y Y ' along the line of this utility model the 3rd embodiment。Please also refer to Fig. 1 K and Fig. 1 D; the multifunctional protection device 100d of the present embodiment is similar to the multifunctional protection device 100 of first embodiment; main difference exists: the multifunctional protection device 100d of this utility model the 3rd embodiment; also comprise suppression electric arc layer 129; it is arranged on first on electrode 121 and second between electrode 122, and be coated on first on electrode 121 and second between electrode 122 part fusible conductor 170 surface。The material of this suppression electric arc layer 129 includes silicone rubber, inorganic ceramic, metal-oxide, the combination complex of one of them or its part such as magnesium hydroxide and waterglass, the technical characteristic of this suppression electric arc layer 129 is when fusible conductor 170 begins breaking because of heat fusing, distance during because just beginning breaking close or like disconnected continuous time, it is likely to produce electric arc and produces high heat, cause the damage of multifunctional protection device 100d, so the surface that electric arc layer 129 will be suppressed to be coated with fusible conductor 170, when on electrode 121 and second on first, between electrode 122, the fusible conductor 170 of part starts to fuse, suppression electric arc layer 129 on fusible conductor 170 surface, the generation of electric arc can be suppressed, reduce the high heat because electric arc produces, reach the function of protection multifunctional protection device 100d。

Fig. 1 L is the generalized section of the multifunctional protection device 100e X X ' along the line of this utility model the 4th embodiment。Please also refer to Fig. 1 L and Fig. 1 C; the multifunctional protection device 100e of the present embodiment is similar to the multifunctional protection device 100 of first embodiment; main difference exists: the multifunctional protection device 100e of this utility model the 4th embodiment; also comprise insulation crust 190 and lower insulating barrier 189; this lower insulating barrier 189 is arranged on hot generation component 180; this insulation crust 190 is arranged on substrate 110, and covers all objects of substrate 110 upper surface。The function of this insulation crust 190 is that all objects of protective substrate 110 upper surface are not by the destruction of external force or foreign object, its material comprises aluminium oxide, poly-diether ketone, nylon, rubber, thermoplastic resin, thermosetting resin, the complex of one of them or its part such as ultraviolet light photopolymerization resin and fluosite combination, the technical characteristic of this lower insulating barrier 189 is to protect hot generation component 180 will not be damaged and have heat insulation effect, heat is made not easily to be delivered on the substrate of application system circuit, its material comprises thermoplastic resin, thermosetting resin, epoxy resin, inorganic ceramic material, LTCC (LTCC), glass ceramics, glass dust, the complex of one of them or its part such as aluminium oxide combination。

Fig. 1 M is the generalized section of the multifunctional protection device 100f Y Y ' along the line of this utility model the 5th embodiment。Please also refer to Fig. 1 M and Fig. 1 D; the multifunctional protection device 100f of the present embodiment is similar to the multifunctional protection device 100 of first embodiment; main difference exists: the fusible conductor 170f of the multifunctional protection device 100f of the present embodiment comprises wide thin section 170f1 and narrow thickness portion 170f2; wide thin section 170f1 is arranged on second electrode 122, and narrow thickness portion 170f2 is arranged on first electrode 121。The sectional area of wide thin section 170f1 and the sectional area close (or identical) of narrow thickness portion 170f2, but thickness is different, the thickness of the wide thin section 170f1 thickness below or less than narrow thickness portion 170f2, the width of the wide thin section 170f1 width more than narrow thickness portion 170f2, on wide thin section 170f1 and the second, electrode 122 is electrically connected, and on narrow thickness portion 170f2 and the first, electrode 121 is electrically connected。Technical characteristic or the advantage of the fusible conductor 170f of the multifunctional protection device 100f of the present embodiment be: has served as current occurrences when occurring; because the wide thin section 170f1 and narrow thickness portion 170f2 of fusible conductor 170f have the sectional area of close (or identical); so can be identical by the electric current of fusible conductor 170f width thin section 170f1 Yu narrow thickness portion 170f2; so when overcurrent is by fusible conductor 170f; fusible conductor 170f can generate heat and fuse, and reaches the function of overcurrent protection。When overvoltage or excess temperature event occur, hot generation component 180 can generate heat, on second, electrode 122 assembles the hot produced heat of generation component 180, and with second on the thinner thickness of wide thin section 170f1 of fusible conductor 170f of electrode 122 electrical connection, so hot generation component 180 need to produce less heat energy to reach the effect (or function) of more rapid fusing fusible conductor 170f, the thickness of the fusible conductor 170 in first embodiment is identical, therefore to the thicker fusible conductor 170 that fuses, hot generation component 180 is needed to produce more heat energy, could be fused fusible conductor 170, that is the time more of a specified duration is needed could to fuse fusible conductor 170, therefore the multifunctional protection device 100 of first embodiment, the speed of overvoltage or overheat protector action can speed compared with the multifunctional protection device 100f of the 5th embodiment slow。About the design of fusible conductor 170f in the present embodiment, in the first to the 4th embodiment, any embodiment all can be combined or replaced according to being actually needed, to reach required technical characteristic or effect。

Fig. 1 N is the schematic top plan view of the multifunctional protection device 100g of this utility model sixth embodiment。Fig. 1 O is the elevational schematic view of the multifunctional protection device 100g of this utility model sixth embodiment。Fig. 1 P is shown as the generalized section of the multifunctional protection device 100g X X ' along the line of Fig. 1 N。Fig. 1 Q is shown as the generalized section of the multifunctional protection device 100g Y Y ' along the line of Fig. 1 N。Please also refer to Fig. 1 N, Fig. 1 O, Fig. 1 P, Fig. 1 Q, Figure 1A, Figure 1B, Fig. 1 C and Fig. 1 D; the multifunctional protection device 100g of the present embodiment is similar to the multifunctional protection device 100 of first embodiment; the multifunctional protection device 100g of the present embodiment includes substrate 110g; it it is a multilayer insulation substrate; comprise conducting shell 118, be arranged in substrate 110g；Upper electrode 120g, is arranged on substrate 110g, comprises on first electrode 122g on electrode 121g and the second；Thermal-arrest electrode 125, be arranged in substrate 110g and extend on first on electrode 121g and the second between electrode 122g substrate 110g on, thermal-arrest electrode 125 and the nearest distance H2 of hot generation component 180 are between 0.001～0.1mm；Bottom electrode 130, is arranged on substrate 110g, including one the 3rd bottom electrode 133；Hot generation component 180, is arranged on substrate 110g, and one end of this hot generation component 180 is electrically connected thermal-arrest electrode 125 via conducting shell 118, other end electrical connection the 3rd bottom electrode 133；And a fusible conductor 170g or multiple fusible conductor 170g, be arranged in electrode 120 with on thermal-arrest electrode 125, and the upper electrode 120 of electrical connection and thermal-arrest electrode 125。Main difference exists: this thermal-arrest electrode 125, on the substrate being arranged in substrate 110g and extending on first on electrode 121g and the second between electrode 122g, and electrical connection fusible conductor 170g, the interior electrode 181 of hot generation component 180 is electrically connected thermal-arrest electrode 125 through conducting shell 118, therefore on electric equivalent circuit diagram, the right fusible conductor 170g1 that fusible conductor 170g is divided on first electrode 121g end and the left side fusible conductor 170g2 of electrode 122g end on second, on second, the shape of electrode 122g is different with electrode 122 on second in first embodiment from position, and electrode 122g is not electrically connected with conducting shell 118 or actual physics is connected on second。Specifically, this substrate 110g is a multilayer insulation substrate, thermal-arrest electrode 125 in substrate 110g is responsible for assembling heat energy produced by hot generation component 180 and conducts to the thermal-arrest electrode 125 on substrate 110g upper surface 11, and heat energy produced by certain hot generation component 180 also can be transferred to the thermal-arrest electrode 125 on substrate 110g via conducting shell 118。One layer of insulated substrate 112g is had between thermal-arrest electrode 125 and hot generating element 188 in substrate 110g, the thickness H2 of insulated substrate 112g between the two is less than 0.15mm, the structure of the thermal-arrest electrode 125 in substrate 110g can any shape or size, preferably the thermal-arrest electrode 125 in substrate 110g is apart from the nearest plane of hot generating element 188, its area is similar to the area of hot generating element 188, and the thickness H2 of insulated substrate between the two is between 0.001～0.1mm, the thermal resistance between thermal-arrest electrode 125 and hot generating element 188 in such substrate 110g can be minimum, conduction of heat can be preferably, it is also faster that thermal-arrest electrode 125 on substrate 110g assembles heat energy produced by hot generating element 188。When hot generation component 180 adstante febre; thermal-arrest electrode 125 because of the multifunctional protection device 100g of the present embodiment; on the substrate being arranged in substrate 110g and extending on first on electrode 121g and the second between electrode 122g, so the time that the hot generation component 180 in the multifunctional protection device 100g of the present embodiment is heated to fusing fusible conductor 170g can be shorter or fast than the time of the multifunctional protection device 100 of first embodiment。Fig. 2 is the equivalent circuit diagram of the multifunctional protection device 100g of sixth embodiment, comprises two electric fuses (Fuse) element (the right fusible conductor 170g1 and left side fusible conductor 170g2) and a heating resistor (hot generation component 180)。Wherein main symbol relevant to Fig. 1 N, 1O, 1P and 1Q marks。

Fig. 1 R is the generalized section of the multifunctional protection device 110h of this utility model the 7th embodiment。Please also refer to Fig. 1 R and Fig. 1 Q; the multifunctional protection device 100h of the present embodiment is similar to the multifunctional protection device 100g of sixth embodiment; main difference exists: the fusible conductor 170h in the multifunctional protection device 100h of the present embodiment comprises the wide thin section 174h of centre and the narrow thickness portion 173h at two ends; middle wide thin section 174h is electrically connected thermal-arrest electrode 125, electrode 122g on electrode 121g and the second in the narrow thickness portion 173h at two ends respective electrical connection first respectively。What need to describe in detail is, the wide thin section 174h of the centre of fusible conductor 170h is arranged on thermal-arrest electrode 125, and electrical connection thermal-arrest electrode 125, the narrow thickness portion 173h at the two ends of fusible conductor 170h, it is arranged respectively on first on electrode 121g and the second on electrode 122g, and electrode 122g on electrode 121g and the second in electrical connection first。The technical characteristic of the fusible conductor 170h in the multifunctional protection device 110h of the present embodiment is, assume width and the thickness of fusible conductor 170g in the multifunctional protection device 110g of sixth embodiment, identical with the narrow thickness portion 173h of the fusible conductor 170h in the multifunctional protection device 110h of the 7th embodiment, the narrow thickness portion 173h of fusible conductor 170h is different from the width of wide thin section 174h and thickness again, but the sectional area of section is identical, so it is identical with the electric current of fusible conductor 170h to flow through fusible conductor 170g, specifically be, when hot generation component 180 adstante febre, the heat energy of thermal-arrest electrode 125 required fusing fusible conductor 170g can heat energy than required fusing fusible conductor 170h high, reason is, its thinner thickness of wide thin section 174h of fusible conductor 170h on the thermal-arrest electrode 125 of the multifunctional protection device 110h of the 7th embodiment, the width thin section 174h so the relatively low heat energy of 180 need of hot generation component just can fuse, review, its thickness of fusible conductor 170g on the thermal-arrest electrode 125 of the multifunctional protection device 110g of sixth embodiment is thicker, could fuse so needing hot generation component 180 to produce higher heat energy, conclusion is the design of the narrow thickness portion 173h including the wide thin section 174h in the middle of one and two ends because of the fusible conductor 170h in the multifunctional protection device 110h of the 7th embodiment, so overvoltage or overcharge or the speed of action of overheat protector is very fast。

Fig. 4 is the block diagram of a kind of electronic installation 1 of the present utility model, and this electronic installation 1 includes power supply unit 20 or load 20, energy storage device 21, abnormality detection control circuit 22, switch element 23 and multifunctional protection device 100。Energy storage device 21 comprise one or more can the battery of discharge and recharge, abnormality detection control circuit 22 can detect the multipoint voltage of energy storage device 21, if generation overvoltage event, then can export a signal to switch element 23, please also refer to Fig. 1, Figure 1A, 1B, 1C, 1D and Fig. 4, how action specification is as follows for this electronic installation 1: specifically, when this electronic installation 1 is in charge mode, power supply unit 20 provides charging current electrode 121 on first, fusible conductor 170, electrode 122 on second, one end to energy storage device 21, it is supplied to the charging current required for energy storage device 21, when this electronic installation 1 is in discharge mode, energy storage device 21 can export electric current electrode 122 on second, fusible conductor 170, electrode 121 on first, to load 20, it is supplied to the voltage needed for load 20 and electric current。When the event of overcurrent (or abnormal current) occurs, fusible conductor 170 can because of by electric current is excessive or exception and generate heat, when power is greater than the specification of fusible conductor 170, will fuse fusible conductor 170, and reaches the function of overcurrent protection。Another anomalous event is exactly overvoltage (or overcharging) or excess temperature event, when overvoltage or excess temperature event occur, the electric current flowing through fusible conductor 170 there is no generation unusual condition, so flowing through the electric current of fusible conductor 170 and enough heat energy cannot being produced to the fusible conductor 170 that fuses, now abnormality detection control circuit 22 detects that overvoltage event occurs energy storage device 21, and provide a signal to switch element 23 via outfan, by open-minded for the switch element 23 of receiving the 3rd bottom electrode 133, namely the two ends of the switch element 23 of external hot generation component 180 are switched to Low ESR or conducting state, flow a current through the hot generation component 180 (from interior electrode 181 to hot generating element 188 to the 3rd bottom electrode 133) outfan to switch element 23, normal state, the resistance at switch element two ends or impedance are significantly high, present off state, it is impermissible for electric current and flows through the hot generation component 180 outfan to switch element, the specification (such as: the resistance of hot generation component 180 or consumption power) of chosen suitable multifunctional protection device 100, electric current now just can be allowed when flowing through hot generation component 180, produce enough heat energy, reach the purpose of fusing fusible conductor 170, and then the path of charging current is cut off, the action of charging cannot be proceeded, reach the function of overvoltage protection, because its equivalent circuit diagram of multifunctional protection device 100 only has an electric fuse (Fuse) element, after fusible conductor 170 fuses, energy storage device 21 is still in overvoltage condition, because the current loop of hot generation component 180 still exists, therefore energy storage device 21 can discharge via hot generation component 180, and then release the state of energy storage device 21 overvoltage。If abnormality detection control circuit 22 can detect the generation of excess temperature event certainly, the function of overheat protector in like manner also can be reached。In this utility model, other its equivalent circuit diagrams of all embodiments comprise the multifunctional protection device of an electric fuse (Fuse) element and a heating resistor, depending on the actual electronic installation 1 needing also to be applied both to shown by Fig. 4。

Fig. 4-1 is the block diagram of a kind of electronic installation 2 of the present utility model, and this electronic installation 2 includes power supply unit 20 or load 20, energy storage device 21, abnormality detection control circuit 22, switch element 23 and multifunctional protection device 100g。Energy storage device 21 comprise one or more can the battery of discharge and recharge, abnormality detection control circuit 22 can detect the multipoint voltage of energy storage device 21, if generation overvoltage event, then can export a signal to switch element 23, please also refer to Fig. 2, Fig. 1 N, 1O, 1P, 1Q and Fig. 4-1, how action specification is as follows for this electronic installation 2: specifically, when this electronic installation 2 is in charge mode, power supply unit 20 provides charging current electrode 121g on first, fusible conductor 170g, electrode 122g on second, one end to energy storage device 21, it is supplied to the charging current required for energy storage device 21, when this electronic installation 2 is in discharge mode, energy storage device 21 can export electric current electrode 122g on second, fusible conductor 170g, electrode 121g on first, to load 20, it is supplied to the voltage needed for load 20 and electric current。When the event of overcurrent (or abnormal current) occurs, fusible conductor 170g can because of by electric current is excessive or exception and generate heat, when the power specification greater than fusible conductor 170g, will fuse fusible conductor 170g, and reaches the function of overcurrent protection。Another anomalous event is exactly overvoltage (or overcharging) or excess temperature event, when overvoltage or excess temperature event occur, the electric current flowing through fusible conductor 170g there is no generation unusual condition, so flowing through the electric current of fusible conductor 170g and enough heat energy cannot being produced to the fusible conductor 170g that fuses, now abnormality detection control circuit 22 detects that overvoltage event occurs energy storage device 21, and provide a signal to switch element 23 via outfan, by open-minded for the switch element 23 of receiving the 3rd bottom electrode 133, namely the two ends of the switch element 23 of external hot generation component 180 are switched to Low ESR or conducting state, flow a current through the hot generation component 180 (from interior electrode 181 to hot generating element 188 to the 3rd bottom electrode 133) outfan to switch element 23, normal state, the resistance at switch element two ends or impedance are significantly high, present off state, it is impermissible for electric current and flows through the hot generation component 180 outfan to switch element, the specification (such as: the resistance of hot generation component 180 or consumption power) of chosen suitable multifunctional protection device 100g, electric current now just can be allowed when flowing through hot generation component 180, produce enough heat energy, reach the purpose of fusing fusible conductor 170g, and then the path of charging current is cut off, the action of charging cannot be proceeded, reach the function of overvoltage protection, because its equivalent circuit diagram of multifunctional protection device 100g has two electric fuses (Fuse) element, after fusible conductor 170g fuses, energy storage device 21 is still in overvoltage condition, because the current loop of hot generation component 180 is disconnected, so to the overvoltage condition releasing energy storage device 21, must additionally be further added by the bypass resistance of a high impedance, path as discharge current。If abnormality detection control circuit 22 can detect the generation of excess temperature event certainly, the function of overheat protector in like manner also can be reached。In this utility model, other its equivalent circuit diagrams of all embodiments comprise the multifunctional protection device of two electric fuses (Fuse) element and a heating resistor, depending on the actual electronic installation 2 needing also to be applied both to shown by Fig. 4-1。

Substrate 110, perforation 117, conducting shell 118, hot generation component 180, upper electrode 120 and bottom electrode 130 is comprised described in all embodiments of this utility model, can making by LTCC (LTCC) material and process technique, heap poststack burns down into the temperature one or many lower than 1100 DEG C altogether then through sintering furnace。

Although this utility model discloses as above with embodiment, many features as above electrode of the present utility model, thermal-arrest electrode has different designs, fusible conductor has different designs, broadly fall in scope of the present utility model, but it is not limited to this utility model, those of ordinary skill in any art, without departing from spirit and scope of the present utility model, when doing a little change and retouching, all close the similar change using this utility model description and accompanying drawing content to make with it in spirit of the present utility model, it is both contained in protection domain of the present utility model。

Claims

1. a multifunctional protection device, it is characterised in that including:

Substrate, described substrate is single layer dielectrics substrate or multilayer insulation substrate；

Upper electrode, configuration on the substrate, comprises on first electrode on electrode and second；

Bottom electrode, configuration on the substrate, comprises the 3rd bottom electrode；

Hot generation component, on the substrate, electrode in one end electrical connection described second of described hot generation component, the other end of described hot generation component is electrically connected described 3rd bottom electrode in configuration；And at least one fusible conductor, it is arranged on described upper electrode, and is electrically connected on described first on electrode and described second electrode。

2. multifunctional protection device according to claim 1, it is characterised in that on described second, electrode also comprises interior thermal-arrest portion, on described second, the described interior thermal-arrest portion of electrode is arranged in described substrate or extends in described substrate。

3. multifunctional protection device according to claim 1, it is characterised in that described fusible conductor is the structure of monolayer or multilamellar, the structure of described multilamellar is hierachical structure or clad type structure, and the material of its adjacent each layer has different melting temperatures。

4. multifunctional protection device according to claim 1; it is characterized in that; also comprise auxiliary material; described auxiliary material is arranged on described second on electrode or on electrode and described fusible conductor on described fusible conductor or on second, and the fusing point of described auxiliary material or liquefaction point temperature are lower than the fusing point of described fusible conductor or liquefaction point temperature。

5. multifunctional protection device according to claim 1; it is characterized in that; also comprise adsorption line and auxiliary material; one end that described adsorption line is arranged on described second on electrode and extend across the other end that described fusible conductor is contrary on electrode to described second; described auxiliary material is arranged between described adsorption line and described fusible conductor; and in described adsorption line and described second between electrode, and the fusing point of described auxiliary material or liquefaction point temperature are lower than the fusing point of described fusible conductor or liquefaction point temperature。

6. the multifunctional protection device according to any one of claim 1-5, it is characterised in that described fusible conductor comprises wide thin section and narrow thickness portion, electrode in described wide thin section electrical connection described second, electrode in described narrow thickness portion electrical connection described first。

7. multifunctional protection device according to claim 1 and 2, it is characterised in that also comprise a suppression electric arc layer, on the described fusible conductor surface being arranged on described first on electrode and described second between electrode。

8. a multifunctional protection device, it is characterised in that including:

Substrate, is multilayer insulation substrate, comprises conducting shell, is arranged in described substrate；

Thermal-arrest electrode, on the described substrate being arranged in described substrate and extending on described first on electrode and described second between electrode；

Bottom electrode, configures on the substrate, including the 3rd bottom electrode；

Hot generation component, configuration is on the substrate, one end of described hot generation component is electrically connected described thermal-arrest electrode via described conducting shell, the other end of described hot generation component is electrically connected the nearest distance of described 3rd bottom electrode, described thermal-arrest electrode and described hot generation component between 0.001～0.1mm；And

At least one fusible conductor, is arranged on described upper electrode and described thermal-arrest electrode, and is electrically connected on described first on electrode, described thermal-arrest electrode and described second electrode。

9. a multifunctional protection device, it is characterised in that including:

Low-temperature co-fired ceramic substrate, it it is multilayer insulation substrate, comprise electrode on first, thermal-arrest electrode, electrode, conducting shell and multiple perforation on second, on described first, on electrode and described second, electrode is arranged on described substrate, on the described substrate that described thermal-arrest electrode is arranged in described substrate and extends on described first on electrode and described second between electrode, described conducting shell is arranged in different described perforations from part described thermal-arrest electrode；

3rd bottom electrode, configuration is on the substrate；

At least one fusible conductor, is arranged on described first on electrode, described thermal-arrest electrode and described second on electrode, and is electrically connected on described first on electrode, described thermal-arrest electrode and described second electrode。

10. multifunctional protection device according to claim 8 or claim 9; it is characterized in that; described fusible conductor comprises the wide thin section of centre and the narrow thickness portion at two ends; the wide thin section of described centre is electrically connected described thermal-arrest electrode, and the narrow thickness portion at described two ends is not each electrically connected on described first electrode on electrode and described second。

11. multifunctional protection device according to claim 8 or claim 9, it is characterised in that also comprise a suppression electric arc layer, on the described fusible conductor surface being arranged on described first on electrode and described second between electrode。

12. an electronic installation, it is characterised in that comprise:

Power supply unit or load；

Energy storage device；

Abnormality detection control circuit；

Switch element；And

According to the multifunctional protection device described in claim 1,2,8 or 9,

Wherein said power supply unit or described load are responsible for providing the power supply unit of charging voltage and electric current or receiving the load of described energy storage device discharge current,

Wherein said energy storage device comprise at least one can the battery of discharge and recharge,

Wherein said abnormality detection control circuit is responsible for detecting voltage or the temperature of described energy storage device, if having abnormal, exports a signal to described switch element,

Wherein when normal; described switch element closes the current path of the described hot generation component in described multifunctional protection device, when receiving the signal of described abnormality detection control circuit, opens the current path of described hot generation component; described hot generation component generates heat because electric current flows through

On described the first of wherein said multifunctional protection device, electrode is electrically connected described power supply unit or described load; on described second, electrode is electrically connected described energy storage device; described 3rd bottom electrode is electrically connected described switch element, the abnormal current path fused when occurring on described first on electrode and described second between electrode。