TW201619999A - Multifunctional protection device and electronic device - Google Patents

Abstract

A multifunctional protection device includes a substrate, an upper electrode, a lower electrode, a heat generating assembly, and at least a fusible conductor. The upper electrode is provided on the substrate, and includes a first upper electrode and a second upper electrode. The lower electrode is provided on the substrate, and includes a third lower electrode. The heat generating assembly is provided on the substrate. One end of the heat generating assembly is electrically connected to the second upper electrode. The other end is electrically connected to the third lower electrode. The fusible conductor is electrically connected to the first upper electrode and second upper electrode. The multifunctional protection device of the invention can provide variety of protection functions such as composite protection functions for combination of over current, over voltage, and over temperature.

Description

Multi-function protection device and electronic device

The invention relates to a multifunctional protection device, in particular to a protection element of a secondary battery pack or an electronic component in a mobile electronic product, which is designed to prevent combinations such as overcurrent, overvoltage and overtemperature. Multiple protection features.

A conventional protective element such as Taiwan Patent No. TW I385695B1, TW I385696B1, TW I452592B, TW I456617B, TW I456618B, etc., has a protective element, most of which comprises a substrate; an upper electrode; an intermediate electrode (or a first extension; a lower electrode; a terminal electrode connecting the upper and lower electrodes; and a terminal electrode connecting the lower electrode and the intermediate electrode (or the first extension); a metal block; and a heater (heating resistor) to design related protection The component, its equivalent circuit is composed of two fuse elements (or fuse elements) connected in series with a heater (heating resistor), which is designed to design the heater on the lower surface of the substrate. Problem 1: When an overvoltage event occurs When it occurs, the heater heats up. The thicker the thickness of the substrate, the higher the thermal resistance. The second is the thermal conductivity of the substrate material. The thermal conductivity of the insulating material is not good. If the material with higher thermal conductivity is higher, the cost is greatly increased. The thermal conductivity is still much lower than that of the metal material, so how to quickly and concentratedly transfer the heat generated by the heater to the intermediate electrode or the first extension of the upper surface is not uniform Diffusion into the substrate or other electrodes, so some substrates are added with some insulating layer or low thermal conductivity, or the material in the substrate is divided into high thermal conductivity and low thermal conductivity design, in order to make the heat generated by the heater fast and concentrated Passing heat to the middle electrode or the first extension, the substrate structure is too complicated and costly Add a lot, problem two: because the heater is on the lower surface of the substrate, the metal block must be connected via the lower electrode, the side electrode, the upper electrode or the intermediate electrode or the first extension, because the lower electrode, the side electrode, the upper electrode or the middle electrode or The first extension is exposed on the surface of the substrate, and in particular, the side electrode (or the terminal electrode) is most susceptible to external temperature, or is easily lost in thermal energy, so that the heat generated by the heater requires more time or more heat. In order to melt the metal block, that is, the protection action of the protection element becomes longer or slower. Question 3: When the rated current required by the protection component increases, it is necessary to increase the cross-sectional area of the metal block or the low melting point metal, that is, the thickness of the metal block or the low melting point metal needs to be increased, so that the heat energy required by the heater is It is more difficult to quickly break the metal block or the low melting point metal, and even disable the function of the protective element.

The present invention solves the problem of poor heat conduction of the substrate, the inability to concentrate to the intermediate electrode (or the first extension), and the electrical connection of the heater and the intermediate electrode (or the first extension) in order to solve the problem that the heater is designed on the second surface or the lower surface. The side electrode is exposed on the side surface of the substrate, the heat generated by the heater is easily affected by the external ambient temperature or the heat loss problem, and the low-melting metal or metal block of the same thickness increases the melting point of the heater. The time of metal or metal block can't even be blown. Moreover, the present invention provides a variety of options. The design of the fusible conductor and the upper electrode of the multifunctional protection device of the present invention can be divided into two types. The first one is that the equivalent circuit includes a fuse element. The fusible conductor only electrically connects the first upper electrode and the second upper electrode (without the intermediate electrode or the first extension). The second type is that the equivalent circuit includes two Fuse elements connected in series, the fusible conductor is electrically connected to the first upper electrode, the collector electrode and the second upper electrode, and the collector electrode is disposed in the substrate and extends to the first On the substrate between the upper electrode and the second upper electrode, allowing application of the circuit The designer can select various multifunctional protection devices of the present invention according to actual needs.

The present invention provides a multi-function protection device including a substrate, which may be a single-layer insulating substrate or a multi-layer insulating substrate; an upper electrode disposed on the substrate, including a first upper electrode and a second upper electrode; a lower electrode, configured On the substrate, comprising a third lower electrode; a heat generating component disposed on the substrate, the heat generating component electrically connecting one end of the second upper electrode and the other end electrically connecting the third lower electrode; and a fusible conductor or a plurality of The fuse conductor is disposed on the upper electrode and electrically connects the first upper electrode and the second upper electrode. It is particularly worth mentioning that the method of electrically connecting the second upper electrode at one end of the heat generating component is to electrically connect the heat generating component and the second upper electrode via a conductive layer in the substrate, such that the path of heat transfer is not susceptible to the external ambient temperature. Influence, the prior art is exposed to the side surface of the substrate due to the heat transfer path, and is easily affected by the external environment temperature, so that heat energy is lost. In addition, the shape of the second upper electrode may be any shape or pattern, and it is preferable that the second upper electrode includes a heat collecting portion, a narrow portion, and an external portion. The equivalent circuit of the multi-function protection device provided by the invention comprises a fuse element and a heating resistor.

In an embodiment of the present invention, the second upper electrode further includes an inner heat collecting portion, and the inner heat collecting portion of the second upper electrode is disposed in the substrate or extends into the substrate. The inner heat collecting portion is very close to the heat generating component or the heater, and can quickly collect the heat energy generated by the heat generating component and conduct it to the second upper electrode on the surface of the substrate, so that the fusible conductor can be quickly melted. Achieve the time to improve or shorten the protection action of the multi-function protection device. Moreover, the multifunctional protection device of the embodiment further includes an auxiliary material disposed on the second upper electrode or on the soluble conductor or the second upper electrode and the fusible conductor, and the auxiliary material has a low melting point or a liquefaction point temperature. The melting point or liquefaction point temperature of the fusible conductor.

In an embodiment of the present invention, the multi-function protection device further includes an adsorption line disposed at one end of the second upper electrode and extending across the fusible conductor to the opposite end of the second upper electrode The auxiliary material is disposed between the adsorption line and the fusible conductor, and between the adsorption line and the second upper electrode, and the melting point or liquefaction point temperature of the auxiliary material is lower than the melting point or the liquefaction point temperature of the fusible conductor.

In an embodiment of the invention, the multi-function protection device further includes an insulating outer casing and a lower insulating layer, wherein the lower insulating layer is disposed on the heat generating component, and the insulating shell is disposed on the substrate and covers the upper surface of the substrate. All objects.

In an embodiment of the invention, the multi-function protection device, wherein the fusible conductor comprises a wide portion and a narrow portion, the wide portion is electrically connected to the second upper electrode, and the narrow portion is electrically connected to the first upper electrode.

The present invention provides a multi-function protection device comprising: a substrate, a multi-layered insulating substrate, comprising a conductive layer disposed in the substrate; and an upper electrode disposed on the substrate, including the first upper electrode and the second upper electrode a collecting electrode disposed in the substrate and extending to the substrate between the first upper electrode and the second upper electrode, the closest distance of the collecting electrode to the heat generating component is between 0.001 and 0.1 mm; the lower electrode is configured On the substrate, including a third lower electrode; a heat generating component disposed on the substrate, one end of the heat generating component is electrically connected to the collector electrode via the conductive layer, the other end is electrically connected to the third lower electrode; and a fusible conductor or A plurality of fusible conductors are disposed on the upper electrode and the heat collecting electrode, and electrically connect the first upper electrode, the heat collecting electrode and the second upper electrode. The technical feature of the collector electrode is that it is disposed in the substrate and extends to the substrate. The material of the collector electrode in the substrate is a metal material, which has a high thermal conductivity, which is much higher than the thermal conductivity of the substrate in the prior art, and the distance. Heat generating component is very The heat generated by the heat generating component can be quickly collected and conducted to the surface of the substrate, and the fusible conductor can be quickly melted. The equivalent circuit of the multifunctional protection device of the present invention comprises two fuse elements in series and a heat generating resistor, one end of which is electrically connected to a common contact or a series connection point of two series fuse elements.

The present invention provides a multifunctional protection device comprising: a low temperature co-fired ceramic (LTCC) substrate, which is a multilayer insulating substrate comprising a first upper electrode, a collector electrode, a second upper electrode, a conductive layer, and a plurality of through holes. The first upper electrode and the second upper electrode are disposed on the substrate, and the heat collecting electrode is disposed in the substrate and extends to the substrate between the first upper electrode and the second upper electrode, and the conductive layer and the partial heat collecting electrode are disposed differently In the through hole, the low temperature co-fired ceramic (LTCC) substrate is co-fired by a low temperature co-fired ceramic (LTCC) material and a process technology and a sintering process, and the sintering temperature is between 100 ° C and 1100 ° C, and the low temperature co-firing The thermal conductivity of the insulating material of ceramic (LTCC) substrate is less than 5W/m. K, preferably less than 2W/m. K; a third lower electrode disposed on the substrate; a heat generating component disposed on the substrate, one end of the heat generating component electrically connected to the collector electrode via the conductive layer, and the other end electrically connected to the third lower electrode, the collector electrode and the heat The closest distance of the generating component is between 0.001 and 0.1 mm; and a fusible conductor or a plurality of fusible conductors disposed on the first upper electrode, the collector electrode and the second upper electrode, and electrically connected to the first upper electrode a collector electrode and a second upper electrode.

In an embodiment of the present invention, the multi-function protection device, wherein the fusible conductor comprises a middle wide portion and a narrow portion at both ends, the middle thin portion is electrically connected to the collector electrode, and the two ends are narrow. The thick portions are each electrically connected to the first upper electrode and the second upper electrode, respectively.

In an embodiment of the present invention, the above multi-function protection device further includes An arc suppression layer is disposed on the surface of the fusible conductor between the first upper electrode and the second upper electrode.

The type of the substrate of the present invention may include an organic substrate or a glass epoxy substrate (for example, FR4 or FR5) or a glass epoxy printed circuit substrate or an inorganic substrate or a ceramic substrate (such as an LTCC substrate or an HTCC substrate). Preferably, the substrate comprising an alumina substrate or a low temperature co-fired ceramic (LTCC) substrate, which is optimal or most suitable for all of the multifunctional protection devices of the present invention, is a low temperature co-fired ceramic (LTCC) substrate which is a low temperature co-fired ceramic (LTCC). The material and the process are manufactured, and the process has the following steps: using a slurry containing inorganic ceramic powder, glass powder and organic binder to form a slurry, which is formed into a sheet by a doctor blade and dried. Embryo or a thick embryo; the through holes required for each layer of thin green embryos; filled with conductive layer material for between the upper and lower electrodes or between the inner and upper electrodes or between the inner and the collector electrodes The transfer of current and heat energy; and then screen printing the inner electrode material, the heat generating element, the upper electrode material, and the lower electrode material on the desired thin layers of the raw embryo; and then stacking the plurality of thin green embryos; Sintered furnace 1100 ℃ temperature of the one or more co-firing is completed.

The invention further provides an electronic device comprising: a power supply or a load, a power supply for supplying a voltage and a current, or a load for receiving a discharge current; and an energy storage device comprising one or a plurality of rechargeable and dischargeable batteries; The measurement control circuit is responsible for detecting the voltage or temperature of the energy storage device or the protected component, and if there is an abnormality, outputting a signal to the switching component; and the switching component, when normal, closing the current path of the heat generating component in the multifunctional protection device When receiving the signal of the abnormality detecting control circuit, turning on the current path of the heat generating component, the heat generating component generates heat due to the current flowing; and the multifunctional protection device according to the present invention, the first upper electrode is electrically connected to the power supply Or load, the second upper electrode is electrically connected to the energy storage device, and the third lower electrode is electrically The gas is connected to the switching element, and when a abnormality occurs, the current path between the first upper electrode and the second upper electrode is blown.

100, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h‧‧‧ multi-function protection device

110, 110b, 110g‧‧‧ substrate

11‧‧‧ upper surface

12‧‧‧ Lower surface

13‧‧‧The lower surface of the first insulating substrate or the upper surface of the second insulating substrate

111b, 111g‧‧‧ first insulating substrate

112b, 112g‧‧‧second insulating substrate

111b1, 111b2, 111b3, 111b4‧‧‧ insulated raw embryos

117‧‧‧through holes

118‧‧‧Transmission layer

120, 120a, 120b, 120g‧‧‧ upper electrode

121, 121g‧‧‧ first upper electrode

122, 122a, 122b, 122g‧‧‧ second upper electrode

122a1, 122b1‧‧‧ External Department

122a2, 122b2‧‧‧ stenosis

122a3, 122b3‧‧ ‧ heat collection department

122b4‧‧In the heat collection department

125‧‧ ‧ collector electrode

127‧‧‧Adsorption line

128‧‧‧Auxiliary materials

129‧‧‧Suppression of the arc layer

130‧‧‧ lower electrode

170, 170f, 170g‧‧‧ fusible conductor

170f1‧‧‧ wide section

170f2‧‧‧narrow section

170g1‧‧‧Right fusible conductor

170g2‧‧‧left fusible conductor

173h‧‧‧ narrow and thick ends

174h‧‧‧ middle and wide section

170 (T1), 170 (T4), 170 (T4a), 170 (T4b), 170 (T4c), 170 (T4d) 170 (T4e), 170 (T7), 170 (T7a) ‧ ‧ first layer Melt 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‧‧‧Heat generating components

188‧‧‧heat generating components

181‧‧‧ internal electrodes

189‧‧‧lower insulation

190‧‧‧Insulated casing

20‧‧‧Power supply or load

21‧‧‧ energy storage device

22‧‧‧Anomaly Detection Control Circuit

23‧‧‧Switching elements

D‧‧‧Distance between the absorbing line and the fusible conductor

Distance between the heat collecting part and the heat generating element in H1‧‧

H2‧‧‧Distance between collector electrode and heat generating element

1, 2‧‧‧ electronic devices

1 is an equivalent circuit diagram of the multi-function protection device 100 of the first embodiment.

1A is a top plan view of a multi-function protection device 100 according to a first embodiment of the present invention.

1B is a schematic bottom view of the multi-function protection device 100 of the first embodiment of the present invention.

1C is a cross-sectional view of the multifunction protection device 100 of FIG. 1A taken along line X-X'.

1D is a cross-sectional view of the multi-function protection device 100 of FIG. 1A taken along line Y-Y'.

Fig. 1E is a schematic plan view showing a modification of the second upper electrode in the first embodiment of the present invention.

1F is a top plan view of a multi-function protection device 100b according to a second embodiment of the present invention.

1G is a cross-sectional view of the multifunction protection device 100 of FIG. 1F taken along line X-X'.

1G-a, 1G-b, 1G-c, 1G-d, 1G-e, 1G-f, 1G-g, 1G-h, and 1G-i are low temperature co-fired substrates. Schematic diagram of the fabrication steps of ceramic LTCC.

1H is a cross-sectional view of the multifunction protection device 100 of FIG. 1A taken along line Y-Y'.

1I is a schematic cross-sectional view of a multi-function protection device 100c according to a third embodiment of the present invention.

1J is a schematic cross-sectional view of a multi-function protection device 100c according to a third embodiment of the present invention.

1K is a schematic cross-sectional view of a multi-function protection device 100d according to a third embodiment of the present invention.

1L is a schematic cross-sectional view of a multi-function protection device 100e according to a fourth embodiment of the present invention.

1M is a schematic cross-sectional view of a multi-function protection device 100f according to a fifth embodiment of the present invention.

1N is a top plan view of a multi-function protection device 110g according to a sixth embodiment of the present invention.

Figure 10 is a bottom plan view of a multi-function protection device 100g according to a sixth embodiment of the present invention.

1P is a cross-sectional view of the multi-function protection device 100g of FIG. 1N taken along line X-X'.

Figure 1Q is a cross-sectional view of the multi-function protection device 100g of Figure 1N taken along line Y-Y'.

1R is a schematic cross-sectional view of a multi-function protection device 110h according to a seventh embodiment of the present invention.

2 is an equivalent circuit diagram of the multi-function protection device 100g of the sixth embodiment

Figure 3-1 shows a schematic diagram of a two-layer coated fusible conductor

Figure 3-2 shows a schematic diagram of a three-layer coated fusible conductor

Figure 3-3 shows a three-layer layered fusible conductor

Figure 3-4, Figure 3-5, Figure 3-6, Figure 3-7, Figure 3-8, Figure 3-9, Figure 3-10 show different two-layer layered fusible conductors

4 is a block diagram of an electronic device 1 of the present invention.

4-1 is a block diagram of an electronic device 2 of the present invention.

In order to further understand the features and technical contents of the present invention, please refer to the following related embodiments, and the detailed description is as follows:

1A is a top plan view of a multi-function protection device 100 according to a first embodiment of the present invention. 1B is a schematic bottom view of the multi-function protection device 100 of the first embodiment of the present invention. 1C is a cross-sectional view of the multi-function protection device 100 of FIG. 1A taken along line XX'. 1D is a cross-sectional view of the multi-function protection device 100 of FIG. 1A taken along line Y-Y'. Referring to FIG. 1A, FIG. 1B, FIG. 1C and FIG. 1D, the multi-function protection device 100 of the present embodiment includes a substrate 110, which may be a single-layer insulating substrate or a multi-layer insulating substrate; the upper electrode 120 is configured. On the substrate 110, a first upper electrode 121 and a second upper electrode 122 are disposed. The lower electrode 130 is disposed on the substrate 110, and includes a third lower electrode 133: a heat generating component 180 disposed on the substrate 110. The heat generating component One end of 180 is electrically connected to the second upper electrode 122, and the other end is electrically connected to the third lower electrode 133; and a fusible conductor 170 or a plurality of fusible conductors 170 (not shown) are disposed on the upper electrode 120 and electrically connected The first upper electrode 121 and the second upper electrode 122. In detail, the substrate 110 includes a uniform hole 117 or a plurality of through holes 117 (three through holes are shown in FIG. 1A ) and a conductive layer 118 that connects the upper surface 11 and the lower surface 12 of the substrate. The conductive layer 118 is configured. In the through hole 117, the substrate 110 may be a single insulating substrate or a multilayer insulating substrate. The material of the substrate 110 includes an inorganic ceramic material, a low temperature co-fired ceramic (LTCC), a glass ceramic, a glass frit, an alumina, and a nitride. A combination of aluminum, zirconia, tantalum nitride, boron nitride, and an organic binder, or a part thereof, may be prepared by mixing a desired substrate 110 material into a slurry, which is dried by a doctor blade. A thin piece of raw embryo or a thick embryo. The through holes 117 can be used to machine the desired holes in each layer of green embryos by mechanical drilling, ray drilling, die punching, or other techniques well known in the art. The material of the conductive layer 118 comprises one or a combination of gold, silver, nickel, tin, lead, platinum, copper, etc., and the material of the conductive layer 118 is filled into the through holes 117 of the green layers of the layers, the conductive layer 118 is responsible for The electrical connection and the thermal connection heat generating component 180 and the second upper electrode 122 are disposed in the substrate 110 and are not exposed on the surface of the substrate 110, so that the temperature of the external environment is not affected (eg, The heat loss or heat dissipation increases the operating time of the multi-function protection device 100. The heat generating component 180 includes a heat generating component 188 and an inner electrode 181. The material of the heat generating component 188 includes ruthenium dioxide (RuO ₂ ), ruthenium oxide, iridium, copper, palladium, platinum, platinum, molybdenum, tungsten, and organic combination. A material or an inorganic binder or the like may be combined to form a slurry of the material of the heat generating element 188, and a pattern of the heat generating element 188 is printed on the lower surface 12 of the substrate 110, the material of the inner electrode 181 comprising A material or a combination of copper, tin, lead, iron, nickel, platinum, tungsten, palladium, silver, gold, or the like, may be printed on the lower surface 12 of the substrate 110 and covered with A portion of the heat generating element 188 and the conductive layer 118 are material such that one end of the heat generating element 188 is electrically coupled to the conductive layer 118 via the inner electrode 181. The upper electrode 120 includes a first upper electrode 121 and a second upper electrode 122. The material of the upper electrode 120 includes one or a combination of copper, tin, lead, iron, nickel, platinum, tungsten, palladium, silver, gold, or the like. A pattern of the first upper electrode 121 and the second upper electrode 112 (shown in FIG. 1A) may be printed on the upper surface 11 of the substrate 110, and the second upper electrode 112 may be overlaid on the material of the conductive layer 118. The second upper electrode 112 is electrically connected to one end of the heat generating element 188 via the conductive layer 118 and the inner electrode 181. The pattern of the first upper electrode 121 and the second upper electrode 112 may be any shape, and it is worth mentioning that the second upper electrode 112 Deformation design: as shown in FIG. 1E, the second upper electrode 122a includes a heat collecting portion 122a3, a narrow portion 122a2, and an external portion 122a1. The heat collecting portion 122a3 is characterized by collecting heat generated by the heat generating assembly 180 and is responsible for fusing the fusible material. 170. The narrow portion 122a2 is characterized by isolating or reducing the loss of thermal energy of the heat collecting portion 122a3 or by the temperature of the external portion 122a1, and the external portion is characterized by being electrically connectable to an external circuit. The lower electrode 130 includes a third lower electrode 133, and the material of the lower electrode 130 includes one or a combination of copper, tin, lead, iron, nickel, platinum, tungsten, palladium, silver, gold, etc., which can be printed by a third technique. The material and pattern of the lower electrode 133 are printed on the lower surface 12 of the substrate 110 and overlying the portion of the heat generating element 188 such that the third lower electrode 133 is electrically connected to the other end of the heat generating element 188 and is electrically connectable to an external circuit. The soluble conductor 170 is disposed on the first upper electrode 121 and the second upper electrode 122, and electrically connects the first upper electrode 121 and the second upper electrode 122 (FIG. 1A shows a fusible conductor 170, and of course, a plurality of The fuse conductor 170, not shown). The fusible conductor 170 may be a single layer or a multi-layer structure. If the fusible conductor 170 is a multi-layer structure, please refer to FIG. 3-1, FIG. 3-2, FIG. 3-3, FIG. 3-4, and FIG. 3-5, Figure 3-6, Figure 3-7, Figure 3-8, Figure 3-9 and Figure 3-10, the multi-layer structure can be covered or layered, as shown in Figure 3-1 In a layer-wrapped manner, a first layer of fusible conductor 170 (T1) encases a second layer of fusible conductor 170 (T2). As shown in Figure 3-2, the first layer of fusible conductor 170 (T1) covers the second layer of fusible conductor 170 (T2), and the second layer of fusible conductor 170 (T2) is coated with the third layer. Layer fusible conductor 170 (T3). 3-3 is a three layer layered form in which the first layer of fusible conductor 170 (T4) is thinner than the third layer of fusible conductor 170 (T6) than the second layer of fusible conductor 170 (T5). Figures 3-4 and 3-5 are two different two-layered layers in which the thickness of the first layer of fusible conductors 170 (T4a), 170 (T4b) is greater than the thickness of the second layer of fusible conductors 170 (T5a, The thickness of 170 (T5b) is thin, the first layer of fusible conductor 170 (T4a) is disposed on the second layer of fusible conductor 170 (T5a), the other layered fusible conductor 170, and the first layer of fusible conductor 170 ( T4b) is disposed on the upper surface and the two side surfaces of the second layer of fusible conductor 170 (T5b). It should be noted that, referring to FIG. 3-7, the first layer of fusible conductor 170 (T4d) in the layered manner The area may be less than or equal to the area of the second layer of fusible conductor 170 (T5d), that is, the first layer of fusible conductor 170 (T4d) is disposed only on a portion of the second layer of fusible conductor 170 (T5d). Applicable to other layered fusible conductors. The fusible conductors in Figures 3-6 and 3-8 are narrow and thick sections containing the middle wide and thin sections and are two-layered, where The thickness of one layer of fusible conductors 170 (T4c), 170 (T4e) is thinner than the thickness of the second layer of fusible conductors 170 (T5c), 170 (T5e). The fusible conductors in Figures 3-9 are two layers. a layer in which the thickness of the first layer of fusible conductor 170 (T7) is greater than that of the second layer The thickness of the conductor 170 (T8) is thick. The fusible conductor in FIGS. 3-10 is a thick and thick portion including the middle wide portion and both ends and is a two-layer layered type in which the first layer of the fusible conductor 170 (T7a) The thickness of the second layer of the fusible conductor 170 (T8a) is thicker than the thickness of the second layer of the fusible conductor 170 (T8a). The melting temperature of the adjacent layers of the above-mentioned multilayer structure of the soluble conductor 170 may be different (T1 to Txx represents the melting point temperature), for example: first The melting point temperature of the layer of fusible conductor 170 (T1) is different from that of the second layer of fusible conductor 170 (T2), and the melting temperature of the second layer of fusible conductor 170 (T2) is different from that of the third layer of fusible conductor 170 (T3). The material or material of each layer in the fusible conductor 170 includes one or a combination of parts of gold, silver, copper, aluminum, palladium, platinum, tin, lead, indium, antimony, bismuth, etc. In addition, the fusible conductor in this embodiment The material electrically connected to the upper electrode 120 is made of a solder paste, a silver paste, a tin, a copper, a silver, a gold, a tantalum, a tin-silver alloy, a tin-lead alloy, or the like, or a combination thereof. The material can be used to fix the fusible conductor 170 above the first upper electrode 121 and the second upper electrode 122, which can be regarded as electrical connections. One of the methods and materials of the connection is not limited thereto. Any conventional welding method or fixed technology or electrical connection method may not require any electrical connection material, as long as the electrical connection is achieved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an equivalent circuit diagram of a multi-function protection device 100 of a first embodiment, comprising a fuse element (a fusible conductor 170) and a heat generating resistor (heat generating component 180). The main symbols associated with Figures 1A, 1B, 1C and 1D are labeled.

1F is a top plan view of a multi-function protection device 100b according to a second embodiment of the present invention. 1G is a cross-sectional view of the multifunction protection device 100 of FIG. 1F taken along line X-X'. 1H is a cross-sectional view of the multifunction protection device 100 of FIG. 1A taken along line Y-Y'. Referring to FIG. 1F, FIG. 1G and FIG. 1H, the multi-function protection device 100b of the present embodiment is similar to the multi-function protection device 100 of the first embodiment. The main difference is that the second upper electrode further includes an inner heat collecting portion 122b4. , disposed in the substrate 110b or extending into the substrate 110b. The inner heat collecting portion 122b4 is responsible for collecting the heat energy generated by the heat generating assembly 180 and conducting it to the heat collecting portion 122b3 of the second upper electrode 122b or the second upper electrode 122b on the upper surface 11 of the substrate 110b. There is a layer of insulating substrate 112b between the inner heat collecting portion 122b4 and the heat generating element 188, and the distance H1 between the two is less than 0.15 mm. The structure of the inner heat collecting portion 122b4 can be any shape and size, and preferably the inner heat collecting portion. 122b4 is the closest plane to the heat generating element 188, the area of which is similar to the area of the heat generating element 188, and the distance H1 between the two is between 0.001 and 0.1 mm, such that the inner heat collecting portion 122b4 and the heat generating element 188 are The thermal resistance is minimal, heat conduction is preferred, and the second upper electrode 122b on the substrate 110b collects the heat generating element 188. The faster the heat is. When the heat generating component 180 generates heat, since the second upper electrode 122b of the multifunctional protection device 100b of the present embodiment includes an inner heat collecting portion 122b4, it is blown more quickly than the second upper electrode 122 in the first embodiment. Fusible conductor 170. Moreover, the multifunctional protection device 100b of the present embodiment further includes an auxiliary material 128 disposed on the second upper electrode 122b or on the soluble conductor 170 or the second upper electrode 122b and the fusible conductor 170. The auxiliary material 128 is mainly The function is to prevent oxidation of the surface of the fusible conductor 170 and the second upper electrode 122b, and when the heat generating component 180 generates heat or when the fusible conductor 170 generates heat, the auxiliary material 128 may melt or liquefy earlier than the fusible conductor 170, Helping the melting of the fusible conductor 170, it is also possible to increase the wetting and adsorption of the surface of the second upper electrode 122b so that the melted conductor 170 that is later melted can be quickly disconnected from the unmelted fusible conductor 170. It is rapidly fused with the auxiliary material 128 and diffused and adhered to the second upper electrode 122b. The material of the auxiliary material 128 includes a composite of one of or a combination of tin, copper, silver, gold, lead, antimony, flux, rosin resin, surfactant, activator, softener, organic solvent, and the like. In the application of the multi-function protection device 100b of the present invention, preferably, the melting point or liquidus point temperature of the auxiliary material 128 is lower than the melting point or liquidus point temperature of the fusible conductor 170. In the multi-function protection device 100b of the embodiment, the upper electrode 120b and the conductive layer 118 can be made of a low temperature co-fired ceramic LTCC substrate 110b material, a conductive layer 118 material and an upper electrode 120 material and a process to form a composite substrate or a low temperature co-fired ceramic. For the LTCC substrate, please refer to FIG. 1G-a, FIG. 1G-b, FIG. 1G-c, FIG. 1G-d, FIG. 1G-e, FIG. 1G-f, FIG. 1G-g, FIG. 1G-h, and FIG. 1G-i The steps are as follows: a slurry containing inorganic ceramic powder, glass powder and an organic binder is mixed into a slurry, and dried by a doctor blade to form a sheet of thin green embryos 111b1, 111b2, 111b3, 111b4, 112b is as shown in FIG. 1G-f and FIG. 1G-g or a thick embryo 111b and a thin green embryo 112b as shown in FIG. 1G-a and FIG. 1G-b; the through hole 117 required for each thin layer of embryos is as shown in FIG. 1G. -f, FIG. 1G-g, FIG. 1G-b and FIG. 1G-a; the conductive layer 118 material and the second upper electrode 122b The material is filled in the through hole 117 for the transfer of current or heat between the heat collecting portion 122b3 of the second upper electrode 122b and the inner heat collecting portion 122b4 or between the inner electrode 181 and the second upper electrode 122b; Printing prints the material of the upper electrode 120b on the desired thin layers of the green embryo, and prints the heat collecting portion 122b3, the narrow portion 122b2 and the outer portion 122b1 of the first upper electrode 121 and the second upper electrode 122b on the substrate as shown in FIG. 1G-c. 110b or the upper surface 11 of the first insulating substrate 111b, as shown in FIG. 1G-d, the inner heat collecting portion 122b4 is printed on the upper surface 13 of the second insulating substrate 112b, and the first upper electrode 121 and the first electrode are as shown in FIG. 1G-h. The heat collecting portion 122b3, the narrow portion 122b2 and the outer portion 122b1 of the second upper electrode 122b are printed on the insulating green sheet 111b1, and the inner heat collecting portion 122b4 of the second upper electrode 122b is printed on the insulating green sheet 111b4; as shown in Fig. 1G-h 1G-i, a plurality of thin green embryos 111b1, 111b2, 111b3, 111b4, and 112b or 1G-h and 1G-i are stacked with a thin green embryo 111b and a thin green embryo 112b as shown in Fig. 1G-e. And then co-firing at a temperature lower than 1100 ° C in a sintering furnace, and then printing the heat generating element 188 and the inner electrode 181 and the lower electrode 130 on the substrate 110b. The lower surface 12 is then sintered at a temperature below 1100 ° C in a sintering furnace. The substrate process of the low temperature co-fired ceramic LTCC is a well-known technology in the industry, but the present invention is applied to the manufacture of the multifunctional protection device, and all the embodiments of the present invention can be used to manufacture all of the present invention by the related art of low temperature co-fired ceramic LTCC. The different substrates 110x of the functional protection device are finally fixed to the upper electrode 120b with the fusible conductor 170.

Fig. 1I is a schematic cross-sectional view of the multi-function protection device 100c of the third embodiment of the present invention taken along line X-X'. Fig. 1J is a schematic cross-sectional view of the multi-function protection device 100c of the third embodiment of the present invention taken along line Y-Y'. Referring to FIG. 1I, FIG. 1J, FIG. 1G and FIG. 1H, the multi-function protection device 100c of the present embodiment is similar to the multi-function protection device 100b of the second embodiment, and the main difference is: the multi-function protection device of the embodiment 100c additionally includes an adsorption line 127. The adsorption line 127 is disposed at one end of the heat collecting portion 122b3 of the second upper electrode 122b and extends across the fusible conductor 170 and Above the auxiliary material 128 to the other end of the heat collecting portion 122b3, a portion of the adsorption line 127 above the fusible conductor 170 has a distance D from the fusible conductor 170 of less than 0.3 mm, preferably between 0.001 mm and 0.15. Between mm, the adsorption line 127 is a single layer or a multi-layered structure, and the layers thereof are composed of copper, tin, lead, iron, nickel, aluminum, titanium, platinum, tungsten, zinc, lanthanum, cobalt. An alloy (for example: copper-nickel-tin alloy, nickel-tin alloy) or a combination thereof in which one or a combination of palladium, silver, gold, platinum, or the like is combined (for example, copper tin plating, copper gold plating), The adsorption line 127 can fix and electrically connect the two ends of the adsorption line 127 to the second upper electrode 122b or the heat collection by solder paste welding, arc welding, laser welding, hot press welding, ultrasonic welding, or the like. The opposite ends of the portion 122b3 are not limited thereto, and any conventional welding method or fixing technique or electrical connection method can achieve a fixed and electrical connection within the scope of the present invention. The adsorption line 127 of the present embodiment is a cylindrical metal wire in the illustrated figure, and its shape is similar to an arc shape or an arch shape. However, the adsorption line 127 may also be a rectangular parallelepiped. The metal wire may be in the shape of a U-shape (not shown), and the surface of the partial adsorption line 127 may be connected to the surface of the partially fusible conductor 170 (distance 0 mm), so the adsorption line 127 The shape across the fusible conductor 170 and the auxiliary material 128 may be any shape, a heat conductive line which may be any shape itself, and the surface of the adsorption line 127 may or may not be connected to the surface of the fusible conductor 170, which is a Within the scope. The auxiliary material 128 is disposed between the adsorption line 127 and the fusible conductor 170 and physically physically connects the adsorption line 127 with the fusible conductor 170, or the auxiliary material 128 is disposed between the adsorption line 127 and the fusible conductor 170 and at the adsorption line. 127 and the heat collecting portion 122b3 of the second upper electrode 122b, and physically connecting the adsorption line 127 and the fusible conductor 170, and physically connecting the adsorption line 127 and the heat collecting portion 122b3 of the second upper electrode 122b. The auxiliary material 128 functions to simultaneously prevent oxidation of the surface of the fusible conductor 170 and the surface of the adsorption line 127, conduction of thermal energy, and fluxing by surface tension. With the capillary phenomenon, the meltable conductor 170 guided to melt (or liquefy) is adsorbed on the adsorption line 127, and the molten (or liquefied) fusible conductor 170 can also be guided to the periphery of the heat collecting portion 122b3 of the second upper electrode 122b. In part, the separation or disconnection of the non-melted fusible conductor 170 is accelerated to reduce the operating time required for overvoltage or overtemperature protection.

Fig. 1K is a schematic cross-sectional view of the multi-function protection device 100d of the third embodiment of the present invention taken along line Y-Y'. Referring to FIG. 1K and FIG. 1D simultaneously, the multi-function protection device 100d of the present embodiment is similar to the multi-function protection device 100 of the first embodiment, and the main difference is: the multi-function protection device 100d according to the third embodiment of the present invention, An arc suppression layer 129 is disposed between the first upper electrode 121 and the second upper electrode 122 and covers the surface of the fusible conductor 170 between the first upper electrode 121 and the second upper electrode 122. The material of the arc suppression layer 129 includes a composite composite of one or a portion of ruthenium rubber, inorganic ceramics, metal oxide, magnesium hydroxide, and water glass, and the technical feature of the arc suppression layer 129 is when the fusible conductor 170 When the heat is melted and starts to be disconnected, since the distance at the beginning of the disconnection is very close or continuous, an arc may be generated to generate high heat, causing damage to the multifunctional protection device 100d, so that the arc layer 129 may be suppressed. The surface of the fuse conductor 170, when the fusible conductor 170 between the first upper electrode 121 and the second upper electrode 122 starts to be blown, the arc suppression layer 129 on the surface of the fusible conductor 170 can suppress the generation of an arc. The function of protecting the multifunctional protection device 100d is achieved by reducing the high heat generated by the arc.

Fig. 1L is a schematic cross-sectional view of the multi-function protection device 100e of the fourth embodiment of the present invention taken along line X-X'. Referring to FIG. 1L and FIG. 1C, the multi-function protection device 100e of the present embodiment is similar to the multi-function protection device 100 of the first embodiment. The main difference is: the multi-function protection device 100e according to the fourth embodiment of the present invention, An insulating housing 190 and a lower insulating layer 189 are disposed. The lower insulating layer 189 is disposed on the heat generating component 180. The insulating housing 190 is disposed on the substrate 110. And covering all the objects on the upper surface of the substrate 110. The function of the insulating housing 190 is to protect all the objects on the upper surface of the substrate 110 from external force or foreign objects, and the material thereof includes alumina, polydiether ketone, nylon, rubber, thermoplastic resin, thermosetting resin, ultraviolet A composite of one of or a combination of a photo-curing resin and a phenol-formaldehyde resin, the technical feature of the lower insulating layer 189 is that the heat-generating component 180 can be protected from damage and has an insulating effect, so that heat is not easily transmitted to The substrate of the application system circuit comprises one of thermoplastic resin, thermosetting resin, epoxy resin, inorganic ceramic material, low temperature co-fired ceramic (LTCC), glass ceramic, glass powder, alumina or the like or Partially combined complex.

Fig. 1M is a schematic cross-sectional view of the multifunction protection device 100f of the fifth embodiment of the present invention taken along line Y-Y'. Referring to FIG. 1M and FIG. 1D simultaneously, the multi-function protection device 100f of the present embodiment is similar to the multi-function protection device 100 of the first embodiment. The main difference is: the fusible conductor 170f of the multi-function protection device 100f of the present embodiment. The wide portion 170f1 and the thick portion 17f2 are included, the wide portion 170f1 is disposed on the second upper electrode 122, and the thick portion 170f2 is disposed on the first upper electrode 121. The cross-sectional area of the wide portion 170f1 is similar to (or the same as) the cross-sectional area of the thick portion 170f2, but the thickness is different, the thickness of the wide portion 170f1 is lower or smaller than the thickness of the thick portion 170f2, and the width of the wide portion 170f1 is larger than the thickness. The width of the narrow portion 170f2, the wide portion 170f1 is electrically connected to the second upper electrode 122, and the thick portion 170f2 is electrically connected to the first upper electrode 121. The technical feature or advantage of the fusible conductor 170f of the multi-function protection device 100f of the present embodiment is that when the overcurrent event occurs, the wide portion 170f1 of the fusible conductor 170f is similar (or identical) to the thick portion 170f2. Since the cross-sectional area is the same as the current of the thick portion 170f1 and the thick portion 170f2 through the fusible conductor 170f, when the overcurrent passes through the fusible conductor 170f, the fusible conductor 170f is heated and melted to achieve overcurrent protection. Features. When an overvoltage or overtemperature event occurs, the heat generating component 180 generates heat, and the second upper electrode 122 collects the heat generating component 180. The heat is thin, and the thickness of the wide portion 170f1 of the fusible conductor 170f electrically connected to the second upper electrode 122 is thin, so that the heat generating assembly 180 only needs to generate less heat to achieve the effect of melting the fusible conductor 170f more quickly. (or function), the thickness of the fusible conductor 170 in the first embodiment is the same, so if the thicker fusible conductor 170 is to be blown, the heat generating component 180 is required to generate more heat energy to melt the fusible conductor 170. That is, it takes a long time to melt the fusible conductor 170. Therefore, the multi-function protection device 100 of the first embodiment has a slower over-voltage or over-temperature protection action than the multi-function protection device 100f of the fifth embodiment. . In the present embodiment, regarding the design of the fusible conductor 170f, any of the first to fourth embodiments can be combined or replaced according to actual needs to achieve the desired technical features or effects.

1N is a schematic plan view of a multi-function protection device 100g according to a sixth embodiment of the present invention. Figure 10 is a bottom plan view of a multi-function protection device 100g according to a sixth embodiment of the present invention. 1P is a cross-sectional view of the multi-function protection device 100g of FIG. 1N taken along line X-X'. Figure 1Q is a cross-sectional view of the multi-function protection device 100g of Figure 1N taken along line Y-Y'. Referring to FIG. 1N, FIG. 10, FIG. 1P, FIG. 1Q, FIG. 1A, FIG. 1B, FIG. 1C, and FIG. 1D, the multi-function protection device 100g of the present embodiment is similar to the multi-function protection device 100 of the first embodiment. The multi-function protection device 100g of the embodiment includes a substrate 110g, which is a multi-layered insulating substrate, and includes a conductive layer 118 disposed in the substrate 110g. The upper electrode 120g is disposed on the substrate 110g and includes a first upper electrode 121g and a second upper surface. The electrode 122g and the heat collecting electrode 125 are disposed in the substrate 110g and extend to the substrate 110g between the first upper electrode 121g and the second upper electrode 122g. The closest distance H2 between the heat collecting electrode 125 and the heat generating component 180 is 0.001. The lower electrode 130 is disposed on the substrate 110g and includes a third lower electrode 133. The heat generating component 180 is disposed on the substrate 110g. One end of the heat generating component 180 is electrically connected to the heat collecting layer via the conductive layer 118. Electrode 125, electrical connection at the other end The third lower electrode 133: and a fusible conductor 170g or a plurality of fusible conductors 170g are disposed on the upper electrode 120 and the collector electrode 125, and electrically connect the upper electrode 120 and the collector electrode 125. The main difference is that the heat collecting electrode 125 is disposed in the substrate 110g and extends onto the substrate between the first upper electrode 121g and the second upper electrode 122g, and electrically connects the fusible conductor 170g to the inside of the heat generating component 180. The electrode 181 is electrically connected to the collector electrode 125 via the conductive layer 118, so on the electrical equivalent circuit diagram, the fusible conductor 170g is divided into the right fusible conductor 170g1 at the end of the first upper electrode 121g and the left end at the end of the second upper electrode 122g. The shape and position of the fusible conductor 170g2 and the second upper electrode 122g are different from those of the second upper electrode 122 in the first embodiment, and the second upper electrode 122g is not electrically connected or physically connected to the conductive layer 118. In detail, the substrate 110g is a multi-layered insulating substrate, and the heat collecting electrode 125 in the substrate 110g is responsible for collecting the heat energy generated by the heat generating component 180 and conducting it to the heat collecting electrode 125 on the upper surface 11 of the substrate 110g, of course, heat. The thermal energy generated by the generating assembly 180 can also be transferred to the collector electrode 125 on the substrate 110g via the conductive layer 118. An insulating substrate 112g is disposed between the heat collecting electrode 125 and the heat generating element 188 in the substrate 110g, and the thickness H2 of the insulating substrate 112g therebetween is less than 0.15 mm, and the structure of the heat collecting electrode 125 in the substrate 110g may be any shape or Preferably, the size of the heat collecting electrode 125 in the substrate 110g is the closest to the heat generating element 188, and the area thereof is similar to the area of the heat generating element 188, and the thickness H2 of the insulating substrate between the two is between 0.001 and 0.1 mm. Therefore, the thermal resistance between the heat collecting electrode 125 and the heat generating element 188 in the substrate 110g is minimized, heat conduction is better, and the heat generated by the heat collecting electrode 125 on the substrate 110g to collect the heat generating element 188 is also faster. When the heat generating component 180 generates heat, the heat collecting electrode 125 of the multifunctional protection device 100g of the present embodiment is disposed in the substrate 110g and extends to the substrate between the first upper electrode 121g and the second upper electrode 122g. The time during which the heat generating component 180 in the multi-function protection device 100g of the present embodiment is heated to fuse the fusible conductor 170g may be shorter or faster than the time of the multi-function protection device 100 of the first embodiment. figure 2 It is an equivalent circuit diagram of the multi-function protection device 100g of the sixth embodiment, comprising two fuse elements (the right fusible conductor 170g1 and the left fusible conductor 170g2) and a heat generating resistor (heat generating component 180). The main symbols associated with Figures 1N, 1O, 1P and 1Q are indicated.

1R is a schematic cross-sectional view of a multi-function protection device 110h according to a seventh embodiment of the present invention. Referring to FIG. 1R and FIG. 1Q simultaneously, the multi-function protection device 100h of the present embodiment is similar to the multi-function protection device 100g of the sixth embodiment, and the main difference is: the fusible conductor in the multi-function protection device 100h of the embodiment The 170h includes a middle wide portion 174h and a narrow portion 173h at both ends, and the middle wide portion 174h is electrically connected to the heat collecting electrode 125, and the narrow portions 173h at both ends are electrically connected to the first upper electrode 121g and the second upper electrode 122g, respectively. . It should be noted that the wide portion 174h in the middle of the fusible conductor 170h is disposed on the heat collecting electrode 125, and is electrically connected to the heat collecting electrode 125. The narrow and thick portions 173h of the both ends of the fusible conductor 170h are respectively disposed at the first The upper electrode 121g and the second upper electrode 122g are electrically connected to the first upper electrode 121g and the second upper electrode 122g. The technical feature of the fusible conductor 170h in the multi-function protection device 110h of the present embodiment is that the width and thickness of the fusible conductor 170g in the multi-function protection device 110g of the sixth embodiment are the same as those of the seventh embodiment. The narrow portion 173h of the fusible conductor 170h in the protection device 110h is the same, and the width and thickness of the narrow portion 173h and the wide portion 174h of the meltable conductor 170h are different, but the cross-sectional area of the cross section is the same, so that it can flow through the fusible The current of the conductor 170g is the same as the current of the fusible conductor 170h. Specifically, when the heat generating component 180 generates heat, the heat energy of the heat collecting electrode 125 required to melt the meltable conductor 170g is higher than the heat energy of the desired fusible conductor 170h. The reason is that the wide portion 174h of the fusible conductor 170h on the heat collecting electrode 125 of the multi-function protection device 110h of the seventh embodiment is thin, so that the heat generating assembly 180 can be blown with only low heat energy. The wide portion 174h, in contrast, the thickness of the fusible conductor 170g on the collector electrode 125 of the multi-function protection device 110g of the sixth embodiment is thick, so The heat generating component 180 is required to generate higher thermal energy to be blown, and it is concluded that the soluble conductor 170h in the multifunctional protection device 110h of the seventh embodiment includes a middle wide portion 174h and a narrow thickness portion 173h at both ends. Therefore, overvoltage or overcharge or overtemperature protection is faster.

4 is a block diagram of an electronic device 1 of the present invention. The electronic device 1 includes a power supply 20 or a load 20, an energy storage device 21, an abnormality detection control circuit 22, a switching element 23, and a multi-function protection device 100. The energy storage device 21 includes one or a plurality of rechargeable batteries, and the abnormality detection control circuit 22 detects the multi-point voltage of the energy storage device 21. If an overvoltage event occurs, a signal is output to the switching element 23, 1 , 1A, 1B, 1C, 1D and FIG. 4, how the electronic device 1 operates is as follows: In detail, when the electronic device 1 is in the charging mode, the power supply 20 provides a charging current through the first The electrode 121, the fusible conductor 170, and the second upper electrode 122 are supplied to the end of the energy storage device 21 to supply a charging current required by the energy storage device 21. When the electronic device 1 is in the discharging mode, the energy storage device 21 outputs a current. The voltage and current required for the load 20 are supplied to the load 20 via the second upper electrode 122, the fusible conductor 170, and the first upper electrode 121 to the load 20. When an overcurrent (or abnormal current) event occurs, the fusible conductor 170 may generate heat due to excessive or abnormal current passing through. When the power is greater than the specification of the fusible conductor 170, the fusible conductor 170 is blown to reach Overcurrent protection function. Another abnormal event is an overvoltage (or overcharge) or overtemperature event. When an overvoltage or overtemperature event occurs, the current flowing through the fusible conductor 170 does not have an abnormal condition, so the current flowing through the fusible conductor 170 is Sufficient thermal energy is not generated to blow the fusible conductor 170. At this time, the abnormality detecting control circuit 22 detects that an overvoltage event has occurred in the energy storage device 21, and provides a signal to the switching element 23 via the output terminal, which is connected to the third The switching element 23 of the electrode 133 is turned on, that is, both ends of the switching element 23 of the external heat generating component 180 are switched to a low impedance or conduction state, so that current flows through the heat. The generating component 180 (from the inner electrode 181 to the heat generating element 188 to the third lower electrode 133) to the output end of the switching element 23, in a normal state, the resistance or impedance across the switching element is high, exhibiting an open state, and is not allowed Current flows through the heat generating component 180 to the output of the switching element, and by selecting the appropriate specifications of the multi-function protection device 100 (eg, the resistance or power consumption of the heat generating component 180), the current at this time can flow through When the heat generating unit 180 is generated, sufficient heat energy is generated to achieve the purpose of melting the fusible conductor 170, thereby cutting off the path of the charging current, and the charging operation cannot be continued, thereby achieving the function of overvoltage protection, because the multifunctional protection device 100 The equivalent circuit diagram has only one fuse element. When the fusible conductor 170 is blown, the energy storage device 21 is still in an overvoltage state, and since the current loop of the heat generating component 180 is still present, the energy storage device 21 can be generated via heat. The assembly 180 is discharged, thereby releasing the state of the overvoltage of the energy storage device 21. Of course, if the abnormality detection control circuit 22 can detect the occurrence of an over-temperature event, the same function of over-temperature protection can be achieved. The equivalent circuit diagram of all other embodiments of the present invention includes a fuse element and a heat-generating multi-function protection device, which can be applied to the electronic device 1 shown in FIG. 4 according to actual needs.

4-1 is a block diagram of an electronic device 2 of the present invention. The electronic device 2 includes a power supply 20 or a load 20, an energy storage device 21, an abnormality detection control circuit 22, a switching element 23, and a multi-function protection device 100g. . The energy storage device 21 includes one or a plurality of rechargeable batteries, and the abnormality detection control circuit 22 detects the multi-point voltage of the energy storage device 21. If an overvoltage event occurs, a signal is output to the switching element 23, 2, FIG. 1N, 1O, 1P, 1Q and FIG. 4-1, how the electronic device 2 operates is as follows: In detail, when the electronic device 2 is in the charging mode, the power supply 20 provides a charging current. An upper electrode 121g, a fusible conductor 170g, and a second upper electrode 122g are supplied to the energy storage device 21 at one end of the energy storage device 21. The required charging current, when the electronic device 2 is in the discharge mode, the energy storage device 21 outputs current through the second upper electrode 122g, the fusible conductor 170g, the first upper electrode 121g, to the load 20, and is supplied to the load 20 Voltage and current. When an overcurrent (or abnormal current) event occurs, the fusible conductor 170g generates heat due to excessive or abnormal current passing through. When the power is larger than the specification of the fusible conductor 170g, the fusible conductor 170g is blown to reach Overcurrent protection function. Another abnormal event is an overvoltage (or overcharge) or overtemperature event. When an overvoltage or overtemperature event occurs, the current flowing through the fusible conductor 170g does not have an abnormal condition, so the current flowing through the soluble conductor 170g is Sufficient thermal energy is not generated to blow the fusible conductor 170g. At this time, the abnormality detecting control circuit 22 detects an overvoltage event of the energy storage device 21, and provides a signal to the switching element 23 via the output terminal, which is connected to the third The switching element 23 of the electrode 133 is turned on, that is, both ends of the switching element 23 of the external heat generating component 180 are switched to a low impedance or conducting state, so that a current flows through the heat generating component 180 (from the inner electrode 181 to the heat generating element 188). The third lower electrode 133) is connected to the output end of the switching element 23. In a normal state, the resistance or impedance across the switching element is high, exhibiting an open state, and does not allow current to flow through the heat generating component 180 to the output end of the switching element. By selecting the appropriate multi-function protection device 100g specifications (e.g., the resistance or power consumption of the heat generating component 180), the current at this time can be generated to generate sufficient heat as it flows through the heat generating assembly 180. The purpose of melting the fusible conductor 170g is achieved, and the path of the charging current is cut off, and the charging operation cannot be continued, thereby achieving the function of overvoltage protection. Since the equivalent circuit diagram of the multi-function protection device 100g has two fuses (Fuse) After the fusible conductor 170g is blown, the energy storage device 21 is still in an overvoltage state, and the current loop of the heat generating component 180 is broken. Therefore, if the overvoltage state of the energy storage device 21 is to be released, an additional one must be added. A high impedance shunt resistor acts as a path for the discharge current. Of course, if abnormal detection control The road 22 can detect the occurrence of an over-temperature event, and the same function can also achieve the function of over-temperature protection. The equivalent circuit diagram of all other embodiments of the present invention includes a two-fuse (Fuse) component and a heat-generating multi-function protection device, which can be applied to the electronic device 2 illustrated in FIG. 4-2 according to actual needs.

All of the embodiments of the present invention include a substrate 110, a through hole 117, a conductive layer 118, a heat generating component 180, an upper electrode 120, and a lower electrode 130, all of which can be fabricated using low temperature co-fired ceramic (LTCC) materials and process technology. After stacking, it is completed by one or more co-firing at a temperature lower than 1100 ° C through a sintering furnace.

Although the present invention has been disclosed in the above embodiments, many of the features of the present invention, such as electrodes and collector electrodes, have different designs, and different designs of the fusible conductor are within the scope of the present invention, which is not intended to limit the present invention. The scope of protection of the present invention is defined by the scope of the appended claims, and the scope of the present invention is subject to the scope of the appended claims. The spirit of the present invention is similar to the scope of the present invention and the use of the description of the present invention and the accompanying drawings are included in the scope of the present invention.

110‧‧‧Substrate

130‧‧‧ lower electrode

120‧‧‧Upper electrode

133‧‧‧third lower electrode

121‧‧‧First upper electrode

180‧‧‧Heat generating components

122‧‧‧Second upper electrode

170‧‧‧Solid conductor

Claims (11)

A multi-functional protection device includes: a substrate, which may be a single-layer insulating substrate or a multi-layer insulating substrate; an upper electrode disposed on the substrate, including a first upper electrode and a second upper electrode; and a lower electrode disposed at a third lower electrode is disposed on the substrate; a heat generating component is disposed on the substrate, one end of the heat generating component is electrically connected to the second upper electrode, and the other end is electrically connected to the third lower electrode; and a fusible conductor or a plurality of fusible The conductor is disposed on the upper electrode and electrically connects the first upper electrode and the second upper electrode. The multi-function protection device of claim 1, wherein the second upper electrode further comprises an inner heat collecting portion, and the inner heat collecting portion of the second upper electrode is disposed in the substrate or extends into the substrate. The multi-function protection device of claim 1, wherein the fusible conductor can be a single layer or a multi-layer structure, and the multi-layer structure can be a layered structure or a cladding structure. The materials of the adjacent layers may have different melting point temperatures. A multifunctional protection device according to claim 1, further comprising an auxiliary material, which may be disposed on the second upper electrode or on the heat collecting electrode or on the second upper electrode and the wide portion or On the collector electrode and the wide portion, and the melting point or liquefaction point temperature of the auxiliary material is lower than the melting point or liquefaction point temperature of the fusible conductor. A multifunctional protection device according to claim 1, further comprising an adsorption line and an auxiliary material disposed at one end of the second upper electrode and extending across the fusible conductor to the second upper electrode On the opposite end, the auxiliary material is placed on the adsorption line and the fusible guide Between the bodies, and between the adsorption line and the second upper electrode, and the melting point or liquefaction point temperature of the auxiliary material is lower than the melting point or liquefaction point temperature of the fusible conductor. A multi-function protection device according to any one of claims 1 to 5, wherein the fusible conductor comprises a wide thin portion and a narrow thick portion, the wide thin portion electrically connecting the second upper electrode or collecting heat The electrode, the narrow portion is electrically connected to the first upper electrode. A multi-functional protection device comprising: a substrate, a multi-layered insulating substrate, comprising a conductive layer disposed in the substrate; an upper electrode disposed on the substrate, comprising a first upper electrode and a second upper electrode; a collector electrode, configured In the substrate and extending to the substrate between the first upper electrode and the second upper electrode, the closest distance of the heat collecting electrode to the heat generating component is between 0.001 and 0.1 mm; and the lower electrode is disposed on the substrate, including a a third lower electrode; a heat generating component disposed on the substrate, one end of the heat generating component electrically connecting the collector electrode via the conductive layer, the other end electrically connecting the third lower electrode; and a fusible conductor or a plurality of fusible conductors The upper electrode and the heat collecting electrode are disposed, and the first upper electrode, the heat collecting electrode and the second upper electrode are electrically connected. A multifunctional protection device comprising: a low temperature co-fired ceramic (LTCC) substrate, which is a multilayer insulating substrate comprising a first upper electrode, a collector electrode, a second upper electrode, a conductive layer and a plurality of through holes, first on The electrode and the second upper electrode are disposed on the substrate, the collector electrode is disposed in the substrate and extends to the substrate between the first upper electrode and the second upper electrode, and the conductive layer and the partial collector electrode are disposed in different through holes The low temperature co-fired ceramic (LTCC) substrate is co-fired by a low temperature co-fired ceramic (LTCC) material and a process technology and a sintering process, and the sintering temperature is between 100 ° C and 1100 ° C, and the low temperature co-fired ceramic (LTCC) substrate insulation material thermal conductivity is less than 5W / m. K; a third lower electrode disposed on the substrate; a heat generating component disposed on the substrate, one end of the heat generating component electrically connected to the collector electrode via the conductive layer, and the other end electrically connected to the third lower electrode, the collector electrode and the heat The closest distance of the generating component is between 0.001 and 0.1 mm; and a fusible conductor or a plurality of fusible conductors disposed on the first upper electrode, the collector electrode and the second upper electrode, and electrically connected to the first upper electrode a collector electrode and a second upper electrode. A multi-function protection device according to claim 7 or 8, wherein the fusible conductor comprises a wide portion at the middle and a narrow portion at both ends, and the wide portion in the middle is electrically connected to the collector electrode, two The narrow and thick portions of the ends are each electrically connected to the first upper electrode and the second upper electrode, respectively. A multifunctional protection device according to claim 1 or 2 or 7 or 8 further comprising a suppression arc layer disposed between the first upper electrode and the second upper electrode On the surface of the fuse conductor. An electronic device comprising: a power supply or a load, a power supply for supplying a voltage and a current, or a load for receiving a discharge current of the energy storage device; and an energy storage device comprising one or more rechargeable batteries; an abnormality detection The control circuit is responsible for detecting the voltage or temperature of the energy storage device, and if there is an abnormality, outputting a signal to the switching component; the switching component normally turns off the current path of the heat generating component in the multifunctional protection device, and receives the abnormality detection control. When the signal of the circuit is turned on, the current path of the heat generating component is turned on, and the heat generating group a device that generates heat due to the flow of current; and a multi-function protection device as described in claim 1 or 2 or item 7 or item 8, the first upper electrode is electrically connected to a power supply or load, The upper electrode is electrically connected to the energy storage device, and the third lower electrode is electrically connected to the switching element. When an abnormality occurs, the current path between the first upper electrode and the second upper electrode is blown.