TW201532095A - Composite protective component and protection circuit - Google Patents

Abstract

A composite protective component comprises an substrate, a heat-generating member, an upper electrode and a fusible conductor. The upper electrode is disposed on the substrate and includes a first upper electrode and a second upper electrode. The heat-generating member is disposed in the substrate and one end electrical connects to the second upper electrode. The fusible conductor electrical connects to the first upper electrode and the second upper electrode. This composite protective component is designed to provide an over-voltage protection and an over-current protection and an over-temperature protection.

Description

Composite protection element

The invention relates to a composite protection component, in particular to a protection component of a secondary battery pack or an electronic component in a mobile electronic product, and is designed in cooperation with a main circuit to prevent combinations such as overcurrent, overvoltage and overtemperature. Composite protection.

The three C products or the electronics technology industry are becoming more and more important, especially in the mobile and communications industry. The mobile device pays attention to how to save energy, because the power of the mobile device depends on the battery system. Today's battery technology is limited in space on the mobile device, so the size of the battery is also limited, and the size needs to be improved. Battery capacity is the development direction of the battery industry today. The safety of the battery is a topic that everyone attaches great importance to, especially the screen of the mobile device is constantly increasing, the resolution is constantly increasing, the complexity of the camera function and the power demand of the flash, etc., the standby time and the use time of the mobile device become The challenge that all manufacturers must face. Therefore, the improvement of battery capacity has become a major issue that everyone requires. However, due to the increased capacity of batteries or battery packs, its safety has become an even more unavoidable issue. In practical applications of mobile power, the electronic components in the battery (or battery pack) or application line, the most interesting is the battery overcharge (or overvoltage) and battery short circuit (or high current impact) and battery or electronic components Over temperature. How to design the minimum and minimum components in a limited space, and to achieve overcurrent and overvoltage and over temperature protection, has become one of the goals pursued by component manufacturers.

The equivalent circuit of the previous protection element is mostly composed of two fuse elements (or fuse elements) connected in series with a heater (heating resistor), and one end of the heater (heating resistor) is connected to two fuse elements connected to each other. The end point of the protective element comprises a substrate; an electrode on the substrate; a low melting point metal; and a heater (heating resistor) to design the associated protective element. In particular, the disadvantage is that the heater (heating resistor) is disposed on the substrate, and the heater is designed on the substrate, and some are designed on the upper surface of the substrate, and some are designed on the lower surface of the substrate. As described in the Taiwan Patent No. TW I255481, the structure of the protective element is such that the heater and the low melting point metal (or low melting point member) are designed on the same surface of the substrate, and there is a problem of insulation, that is, in the heater and An insulating layer must be placed between the low-melting-point metals (low-melting-point members). Otherwise, there may be doubts about short-circuiting each other (or changing the resistance of the heater). The design should consider the thickness of the insulating layer or the design of different electrodes. To achieve the desired characteristics. If the heater and the low-melting-point metal (low-melting-point member) are designed on different surfaces of the substrate, the problem of the thermal conductivity of the substrate must be taken into account, since three sub-electrodes are connected to the low-melting-point metal (or low-melting-point member) on the upper surface of the substrate. How to quickly transfer the heat generated by the heater on the lower surface to one of the sub-electrodes on the upper surface, and delay the conduction to the other two sub-electrodes, so different thermal conductivity selection and process in different blocks of the substrate Adding a lot of complicated procedures, the electrodes of the heater are connected from the lower surface to the upper surface, and the lost heat energy requires the heater to generate more heat to melt the low melting point metal or the low melting point metal. Disadvantage 2: The heater (or heating resistor) is designed with a single resistor or by the surface area on the substrate. The heater has only one choice of resistance. The heat generated by the heater is connected by The voltage across the heater is determined by the impedance of the heater. If the customer has a large range of voltage variations in the application, a larger resistance range (or a choice of two resistance values) is needed to adjust the thermal energy generated by the heater. Customers must use other types of protection components, which will increase the parts library. The difficulty of deposit management and the risk of sluggish materials. Disadvantage 3: When the protected device needs to pass a larger current, the current specification of the protection element overcurrent protection must also be increased. One of the methods is to increase the cross-sectional area of the low-melting metal block (for example, increase the fusible metal). Thickness), how quickly and effectively a heater (or a heating resistor) can blow a thick fusible metal (or fuse element) when an overvoltage event occurs, especially a heating electrode that is responsible for blowing a fusible metal It is even possible to increase the volume of the meltable fusible metal due to the melting of the thick fusible metal. Since the area of the heating electrode (or the extension electrode) is limited, it cannot withstand the high temperature, that is, the heating electrode (or the extension electrode) is Corrosion, the current cannot flow through the heater, so that the heating element stops heating, and the purpose of melting the low-melting metal block cannot be achieved, and the function of over-voltage protection is lost. Previous technologies have increased the complexity of process and material selection, and cannot be applied to the protection circuit of a high (large) current battery pack, or to the protection circuit of a battery pack with a large voltage variation range, so that it does not meet the customer (market). ) Requires important parts such as thinner parts, lower manufacturing costs, and higher rated operating currents, which will eventually lose market competitiveness.

TW 201140639 A1 proposes a protective element whose equivalent circuit consists of two fuse elements (or fuse elements) connected in series with a heater (heat generating resistor) which is designed to design the heater on the upper surface or under the substrate Surface, defect 1: Add some insulation layer or low heat conduction part, or the material in the substrate is divided into high thermal conductivity and low thermal conductivity design. The structure is too complicated to transfer the heat generated by the heater to the substrate quickly. The electrode on the surface is used to blow the metal block (or low-melting component). The second disadvantage is that the area that can be used by the heater is limited. The larger the current through the metal block, the greater the heat energy required to blow the metal block. To increase the thermal energy of the heater, it is necessary to increase the resistance value of the heater, which will increase the length or height of the component. This does not meet the trend of miniaturization of electronic components. Disadvantage 3: The thickness of the metal block is thickened due to the increase in current specification. At the time, the electrode (first electrode extension) of the metal block responsible for the fuse is exposed to the third and fourth sub-electrodes, and the area is too small to be eroded.

In view of the above shortcomings and future trends in the application of protective components (eg, higher rated current, heaters of different resistance values, etc.), the present invention provides a low profile, high current rating, fast action or protection A composite protection element having one or more heat generating components with external resistance terminals and a method of manufacturing the composite protection element.

A composite protection device of the present invention includes a substrate, the substrate is a multi-layered insulating substrate; the upper electrode is disposed on the substrate, and includes a first upper electrode and a second upper electrode; and a heat generating component disposed in the substrate One end of the heat generating component is electrically connected to the second upper electrode; and at least one fusible conductor is disposed on the upper electrode, one end of the fusible conductor is electrically connected to the first upper electrode, and the other end is electrically connected to the second upper electrode to form A current path between the first upper electrode and the second upper electrode. The equivalent circuit of the composite protection component comprises an equivalent fuse component and at least one equivalent heating resistor, and an equivalent fuse component electrically connects the first upper electrode and the second upper electrode, The current path between the first upper electrode and the second upper electrode is blown by the generation of heat. In detail, when an overcurrent event occurs, the current flowing through the first upper electrode, the fusible conductor, and the second upper electrode exceeds the specification of the rated current, and the fusible conductor generates heat due to excessive current passing through, and the heat makes the fusible The conductor is blown, and the current path between the first upper electrode and the second upper electrode is blown to achieve the function of overcurrent protection. In addition, when an overvoltage (overcharge) or overtemperature event occurs, the heat generating component generates heat. And conducting to the second upper electrode, the heat accumulated by the second upper electrode causes the fusible conductor to be blown, and the first upper electrode and the second electrode The current path between the upper electrodes is blown to achieve overvoltage (overcharge) or overtemperature protection. In addition, it should be specially stated that the fusible conductor and the heat generating component can also be replaced by a positive temperature coefficient thermistor (PTC Thermistor), instead of the PTC Thermistor of the fusible conductor, there are two technologies. Characteristics: When the current passed exceeds the rated current, the resistance of the PTC thermistor rises from low resistance to high resistance in a very short time, limiting the current through its own to a very small value, When the external temperature is as high as the operating temperature point of the positive temperature coefficient thermistor, the resistance of the positive temperature coefficient thermistor will rise from low resistance to high resistance in a very short time, limiting the current passing through itself to a very small value. . A PTC Thermistor that replaces the heat generating component is characterized in that when a certain range of voltage is connected across the positive temperature coefficient thermistor, a current is generated (I=V/R). , R: is the resistance of the positive temperature coefficient thermistor), the positive temperature coefficient thermistor will be triggered to act and produce an approximately fixed temperature on the surface (the temperature point when the action can be adjusted according to the demand), and the replacement can be provided The thermal energy requirement required for the action of the positive temperature coefficient thermistor of the fuser. The equivalent circuit of the composite protection element comprises an equivalent positive temperature coefficient thermistor element (PTC Thermistor) and at least one equivalent heating resistor, and an equivalent positive temperature coefficient thermistor element electrical connection An upper electrode and the second upper electrode or the first upper electrode, the heat collecting electrode and the second upper electrode, the thermistor of the positive temperature coefficient is raised by the low resistance of the approximately short circuit in a very short time by the generation of heat The high resistance of the open circuit is approximated, and the current path between the first upper electrode and the second upper electrode is broken. The technique of replacing the fusible conductor and the heat generating component with a positive temperature coefficient thermistor (PTC Thermistor) is also applicable to all of the composite protective components of the present invention.

The composite protection element of the present invention is directed to the upper electrode and the fusible conductor And the heat generating components can be modified according to different needs, and there are three special instructions:

The upper electrode of the composite protection element of the present invention may be a single layer of conductive layer or a plurality of layers of conductive layer, wherein the first upper electrode and the second upper electrode may be of any geometric shape and size, preferably The area of the upper electrode is larger than the area of the first upper electrode, and the second upper electrode includes an outer portion, a narrow portion and a heat collecting portion, and the fusible conductor is electrically connected to the external circuit via the external portion of the second upper electrode. a heat collecting portion of the second upper electrode, wherein a part of the heat collecting portion is overlapped and electrically connected to the fusible conductor, and a heat collecting portion of the second upper electrode collects heat generated by the heat generating component, and fuses the fusible conductor and the portion that is blown The fusible conductor is adsorbed on the heat collecting portion of the second upper electrode, and the shape of the second upper electrode heat collecting portion can be designed to guide the melted (liquefied) fusible conductor when the fusible conductor is blown (liquefied) Fast outward extension to speed up the disconnection from the melted conductor that is not melted (liquefied), especially when the rated current of the fusible conductor is larger, the cross-sectional area of the fusible conductor must also be increased, Thickness or width of fusible conductor It must be enlarged, so the heat collecting portion of the second upper electrode must also be enlarged to allow the molten or liquefied partially fusible conductor to have sufficient surface area for adsorption on the heat collecting portion. The narrow portion of the second upper electrode is for reducing the heat transfer from the heat collecting portion to the external portion or reducing the influence of the temperature of the external metal to avoid affecting the time during which the fusible conductor is blown.

2. The fusible conductor of the composite protection element of the present invention may be a single layer or a multi-layer structure, and the multi-layer structure may be a layered structure or a cladding structure, and the materials of adjacent layers are Different melting point temperatures or liquefaction point temperatures, and because of the magnitude of the rated current, the material and cross-sectional area of the fusible conductor will also have different designs. When the rated current is less than a certain value, for example, 10A or less. Can be configured with a fusible conductor, The width and height (or thickness) of the fusible conductor are the same throughout the length. When the rated current is high, for example, greater than 10A, a plurality of fusible conductors can be arranged, and a plurality of fusible conductors can be improved in circulation. The current between the upper electrode and the second upper electrode does not need to change the cross-sectional area of the fusible conductor. If only one fusible conductor is still disposed, the cross-sectional area of the fusible conductor needs to be enlarged, that is, the fusible conductor The height (or thickness) will increase, and the increase in height (or thickness) will increase the heat energy or the melting time of the fusible conductor to be blown. Of course, the width and height (or thickness) of the fusible conductor may be the entire length. The same design, but it is preferred that the present invention provides a different height (thickness) of a fusible conductor for a composite protection element requiring a larger rated current, the fusible conductor comprising a thin wall portion and a thick wall portion, thin The cross-sectional areas of the wall portion and the thick portion are substantially similar or equal, but the thickness or height of the thick portion is thicker or higher than the thin portion, and the thin portion is electrically connected to the second upper electrode, and the thick portion is First upper electrode electrical connection Since the cross-sectional areas of the thin-walled portion and the thick-walled portion are substantially similar or equal, the current through the thin-walled portion and the thick-walled portion of the fusible conductor is the same, and when an overcurrent event occurs, the fusible conductor The fuse is blown due to the abnormal current passing through the heat. When an overvoltage (or overcharge) or overtemperature event occurs, the heat generating component generates heat, and the second upper electrode collects heat generated by the heat generating component, and the second upper electrode is electrically connected. The thin wall portion of the connected fusible conductor may be blown faster (or easier). The advantage of this design is that when the heat generating component generates heat, the heat accumulated by the second upper electrode is to melt the fusible conductor, if the fusible conductor is When the thin-walled portion and the thick-walled portion have close cross-sectional areas, the thin portion will be blown faster than the thick portion. By such a technique, a composite protective element requiring a larger rated current can be used as an overvoltage (or The speed of the desired action (or protection start) of the composite protection element can also be quite fast when overcharged or over temperatureed. Of course, the fusible conductor can also be designed with different cross-sectional areas, the portion of the small cross-sectional area is electrically connected to the second upper electrode, and the portion of the large cross-sectional area is electrically connected to the first upper electrode, but it is necessary to ensure that the portion of the small cross-sectional area can be achieved. Current rating The demand can be. It is of course also possible to use a plurality of fusible conductors and each of the fusible conductors comprises a combination of a thin wall portion and a thick wall portion to achieve the goal of a composite protection element requiring a higher current rating in the future.

3. The heat generating component of the composite protection element of the present invention is disposed in the substrate, so that the height of the composite protection component can be reduced, and the requirement of a low profile can be achieved. In addition, the heat generating component of the present invention can provide at least one or more sets of (1, 2, 3, etc.) end points of different resistance values, and electrically connect external circuits according to different requirements, such as a set of resistance value end points. The heat generating component comprises a heat generating material and two inner electrodes disposed at both ends of the heat generating material, one inner electrode electrically connecting the second upper electrode, and the other inner electrode electrically connecting the external circuit. The heat generating component of the two sets of resistance end points comprises two heat generating materials and a plurality of internal electrodes respectively disposed at two ends of the two heat generating materials, and the two heat generating materials are electrically connected in series, wherein an internal electrode of the heat generating material is electrically The second upper electrode is connected, and the two inner electrodes of the other heat generating material are electrically connected to an external circuit. The heat generating components of the three sets of resistance end points comprise three heat generating materials and a plurality of internal electrodes respectively disposed at two ends of the three heat generating materials, and three heat generating materials are electrically connected in series, wherein one internal electrode of the heat generating material is electrically The second upper electrode is connected, and the inner electrodes of the other two heat generating materials can be electrically connected to an external circuit. The invention can provide a plurality of end points of different resistance values for the system protection circuit designer to have a more flexible design, and the substrate of the composite protection element of the invention is a multi-layer structure, so multiple sets of heat generation Both the material and the inner electrode can be disposed within the substrate, and the composite protection element of the present invention has a lower height than the protective element of the prior art heater disposed on the substrate.

The composite protection component of the present invention further comprises an auxiliary material which can be disposed on the fusible conductor or on the fusible conductor and the second upper electrode, and the auxiliary material has a lower liquefaction point or liquidus point temperature The melting point of the fusible conductor or the temperature of the liquefaction point or liquidus point.

The composite protection component of the present invention further includes an adsorption line and an auxiliary material 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 Between the adsorption line and the fusible conductor, and between the adsorption line and the second upper electrode, and the liquefaction point or liquidus point temperature of the auxiliary material is lower than the melting point or the liquefaction point or the liquidus point temperature of the fusible conductor.

The composite protection element of the present invention further includes an arc suppression layer disposed between the first upper electrode and the second upper electrode and covering a portion of the fusible conductor between the first upper electrode and the second upper electrode . The arc suppression layer is characterized in that when the fusible conductor is melted by heat and starts to be disconnected, when the distance at the beginning of the disconnection is very close, an arc may be generated to generate high heat, causing damage of the composite protection element, so that the suppression will be suppressed. The arc layer covers the middle portion of the fusible material, and when the fusible conductor between the first upper electrode and the second upper electrode starts to be blown, the arc suppression layer on the surface of the middle portion of the fusible conductor can suppress the generation of the arc. Reduce the damage of the composite protection element caused by the high heat generated by the arc.

Another composite protection component of the present invention includes a substrate, the substrate is a multi-layered insulating substrate, and the upper electrode is disposed on the substrate and includes a first upper electrode and a collector electrode and a second upper electrode for collecting heat. The electrode is disposed between the first upper electrode and the second upper electrode; the heat generating component is disposed in the substrate, not disposed on the first insulating substrate but on the flat surface of the other insulating substrate, and one end of the heat generating component Electrically connecting the collector electrode; and at least one fusible conductor disposed on the upper electrode to electrically connect the first upper electrode, the collector electrode and the second upper electrode to form a current path between the first upper electrode and the second upper electrode . The fusible conductor is actually integral and can be divided into two parts in electrical characteristics. One is that the portion between the first upper electrode and the collector electrode is defined as the right fusible conductor, and the second is between the second. electrode The portion between the collector electrode and the collector electrode is defined as a left fusible conductor. The fusible conductor may be a single layer or a multilayer structure, and the melting temperatures of adjacent layers may be different. The equivalent circuit of the composite protection component comprises two equivalent fuse elements and at least one equivalent heating resistor. When an overcurrent event occurs, the rated current flows through the first upper electrode and is fusible. The conductor and the second upper electrode, the fusible conductor generates heat and fuses the fusible conductor, and fuses a current path between the first upper electrode and the second upper electrode to achieve an overcurrent protection function, when overvoltage (or overcharge) Or when an over-temperature event occurs, the collector electrode collects the heat generated by the heat generating component, and the partially fusible conductor disposed on the heat collecting electrode is blown, and the current path between the first upper electrode and the second upper electrode is blown. Voltage (or overcharge) or over temperature protection. In addition, it should be particularly noted that the fusible conductor and the heat generating component in the composite protection component of the present invention may also be replaced by a positive temperature coefficient thermistor (PTC Thermistor), and the related description is similar to the foregoing. I will not repeat them here.

The composite protection component of the present invention may have some modified designs for the upper electrode, the fusible conductor and the heat generating component according to different needs, and there are three special descriptions:

The upper electrode of another composite protection element of the present invention may be a single layer of conductive layer or a plurality of layers of conductive layer, wherein the first upper electrode, the heat collecting electrode and the second upper electrode may be of any geometric shape and size. Generally, the shape of the collector electrode is centered on a portion overlapping the fusible conductor, and extends outward in two opposite directions. The width of the collector electrode is the same, preferably the collector electrode is centered. The width of the outer extension is wider or larger than the width of the central portion. The advantage of this design is that the larger the rated current of the fusible conductor, the larger the cross-sectional area of the fusible conductor must be, so that the fusible conductor Thickness or width must It must be increased that when the fusible conductor is melted (liquefied), the molten fusible conductor is more easily extended outward from the center and adsorbed on the wider collector electrode. Of course, the collector electrode may also extend in a different number of directions, and the shape may be any shape. The shape of the collector electrode is designed to enable the molten fusible conductor to be adsorbed on the collector electrode more quickly. Within the scope.

2. A fusible conductor of another composite protection element of the present invention, the fusible conductor being disposed on the first upper electrode, the collector electrode and the second upper electrode, and electrically connecting the first upper electrode, the collector electrode, and the second The upper electrode, the fusible conductor is actually integrated, and can be divided into two parts in electrical characteristics. One is that the portion between the first upper electrode and the collector electrode is defined as the right fusible conductor, and the other is The portion between the second upper electrode and the collector electrode is defined as a left fusible conductor. The fusible conductor may be a single layer or a multi-layer structure, and the multi-layer structure may be a layered structure or a clad structure, and materials of adjacent layers have different melting point temperatures or liquefaction point temperatures, and Because of the different magnitude of the rated current, the material and cross-sectional area of the fusible conductor may have different designs. When the rated current is less than a certain value, for example, 10A or less, a fusible conductor may be disposed. The width and height (or thickness) of the fuse conductor are the same throughout the length. When the rated current is high, for example, greater than 10A, a plurality of fusible conductors can be disposed, and a plurality of fusible conductors can be circulated to the first. The current between the upper electrode and the second upper electrode does not need to change the cross-sectional area of the fusible conductor. If only one fusible conductor is still disposed, the cross-sectional area of the fusible conductor needs to be increased, that is, the position of the fusible conductor. The height (or thickness) will increase, and the increase in height (or thickness) will increase the heat energy or fuse time of the fusible conductor to be blown. Of course, the width and height (or thickness) of the fusible conductor may also be throughout the length. The same design, but it is preferred that the present invention provides a different height (thickness) of the fusible conductor for the composite protection element requiring a larger rated current, the fusible conductor comprising an intermediate thin wall portion and a two-end portion Thick wall, middle The cross-sectional areas of the thin-walled portion and the thick-walled portions at both ends are substantially similar or equal, but the thickness or height of the thick-walled portions at both ends may be thicker or higher than that of the intermediate thin-walled portion, and the intermediate thin-walled portion is The collector electrode is electrically connected, and the thick portions at the both ends are electrically connected to the first upper electrode and the second upper electrode, respectively, and the cross-sectional areas of the thin portion at the middle and the thick portion at both ends are substantially similar or equal, so The current flowing through the thin portion in the middle of the fusible conductor is the same as the thickness of the thick portion at both ends. When an overcurrent event occurs, the fusible conductor is blown due to the abnormal current passing through the heat, when overvoltage (or overcharge) Or when an over-temperature event occurs, the heat-generating component generates heat, the collector electrode collects the heat generated by the heat-generating component, and the thin-walled portion in the middle of the fusible conductor electrically connected to the collector electrode is faster (or easier). Fusing, the advantage of this design is that when the heat generating component generates heat, the heat accumulated by the collecting electrode is to melt the fusible conductor, and if the thin portion in the middle of the fusible conductor has a close sectional area to the thick portion at both ends, The thin part will be more than the thick part Fast-blown, with this technology allowing a composite protection component that requires a large current rating to be required to operate (or protect) when the overvoltage (or overcharge) or overtemperature occurs. It can also be quite fast. Of course, the fusible conductor can also be designed with different cross-sectional areas, the portion of the small cross-sectional area is electrically connected to the collector electrode, and the portion of the large cross-sectional area is electrically connected to the first upper electrode and the second upper electrode, but a small cross-sectional area must be ensured. The part can meet the demand of the rated current. It is of course also possible to use a plurality of fusible conductors and each of the fusible conductors comprises a combination of a thin wall portion and a thick wall portion to achieve the goal of a composite protection element requiring a higher current rating in the future.

3. The heat generating component of another composite protective component of the present invention is disposed in the substrate, so that the height of the composite protective component can be reduced, and the requirement of a low profile can be achieved. In addition, the heat generating component of the present invention can provide at least one or more sets of (1, 2, 3, etc.) end points of different resistance values, and electrically connect external circuits according to different requirements, such as a set of resistance value end points. Heat generating component A heat generating material is disposed with two internal electrodes disposed at both ends of the heat generating material, one inner electrode is electrically connected to the heat collecting electrode, and the other inner electrode is electrically connected to an external circuit. The heat generating component of the two sets of resistance end points comprises two heat generating materials and a plurality of internal electrodes respectively disposed at two ends of the two heat generating materials, and the two heat generating materials are electrically connected in series, wherein an internal electrode of the heat generating material is electrically The collector electrode is connected, and the two internal electrodes of the other heat generating material are electrically connected to an external circuit. The heat generating components of the three sets of resistance end points comprise three heat generating materials and a plurality of internal electrodes respectively disposed at two ends of the three heat generating materials, and three heat generating materials are electrically connected in series, wherein one internal electrode of the heat generating material is electrically The collector electrode is connected, and the inner electrodes of the other two heat generating materials can be electrically connected to an external circuit. The invention can provide a plurality of end points of different resistance values for the system protection circuit designer to have a more flexible design, and the substrate of the composite protection element of the invention is a multi-layer structure, so multiple sets of heat generation Both the material and the inner electrode can be disposed within the substrate, and the composite protection element of the present invention has a lower height than the protective element of the prior art heater disposed on the substrate.

The composite protection component of the present invention further comprises an auxiliary material which can be disposed on the soluble conductor or disposed on the fusible conductor and the heat collecting electrode, and the auxiliary material has a liquefaction point or a liquidus point temperature lower than the fusible link The melting point of the conductor or the temperature of the liquefaction point or liquidus point.

The composite protection component of the present invention further comprises an adsorption line disposed at one end of the heat collecting electrode and extending across the soluble conductor to the opposite end of the heat collecting electrode, the auxiliary material being disposed on the adsorption line Between the fusible conductor and the adsorption line and the collector electrode, and the liquefaction point or liquidus point temperature of the auxiliary material is lower than the melting point or liquefaction point or liquidus point temperature of the fusible conductor.

The composite protection component of the present invention further includes an arc suppression layer disposed between the first upper electrode and the heat collecting electrode and wrapped between the first upper electrode and the heat collecting electrode The portion of the fusible conductor surface is disposed between the second upper electrode and the heat collecting electrode and covers a surface of the fusible conductor between the second upper electrode and the heat collecting electrode. The arc-suppressing layer is characterized in that when the fusible conductor is melted by heat and starts to be disconnected, an arc may be generated to generate high heat due to the close distance of the start of the arcing, resulting in damage of the composite protection element, so that the arc is suppressed. The layer covers both ends of the fusible material when a fusible conductor between a portion of the first upper electrode and the collector electrode begins to blow or a portion of the fusible conductor between the second upper electrode and the collector electrode begins to blow or When the fusible conductors between the first upper electrode and the heat collecting electrode and between the second upper electrode and the heat collecting electrode respectively start to be blown, the arc suppression layer on the both end surfaces of the fusible conductor can suppress the arc The generation reduces the damage of the composite protection element caused by the high heat generated by the arc.

Another composite protection component of the present invention comprises: a substrate, the substrate is a multilayer insulating substrate; at least one conductive layer; and an upper electrode disposed on the substrate, comprising a first upper electrode and a collector electrode and a first The upper electrode is disposed between the first upper electrode and the second upper electrode, and the upper electrode may be a single metal conductive layer or a multilayer metal conductive layer; the heat generating component is disposed in the substrate And not disposed on the first insulating substrate, but on the flat surface of the other insulating substrate, the heat generating component comprises at least one heat generating material and a plurality of internal electrodes, and one end of the heat generating component is electrically connected to the collecting electrode And at least one fusible conductor disposed on the upper electrode electrically connecting the first upper electrode, the heat collecting electrode and the second upper electrode to form a current path between the first upper electrode and the second upper electrode; and the above-mentioned inclusion The structure of the substrate of the heat generating component and all the electrodes are insulating materials including inorganic ceramic powder, glass frit and organic binder, and metal electrode materials containing silver, copper, etc. to contain oxidation , Palladium, platinum, heat generating material, over one or more LTCC sintering process, the sintering temperature is below 1100 ℃ hereinafter Finally, the use of any conventional industry A soldering method or a fixed technique or an electrical connection method is to fix the fusible conductor to the upper electrode.

Moreover, the type of the substrate of the composite protection element of the present invention may comprise an organic substrate or a glass epoxy substrate (such as FR4 or FR5) or an inorganic substrate or a ceramic substrate (such as an LTCC substrate or an HTCC substrate), preferably. One of the choices is a low temperature co-fired ceramic (LTCC) substrate. It should be particularly noted that the composite protection element of the present invention can be a low temperature co-fired ceramic (LTCC) substrate, and the low temperature co-fired ceramic technology is a well-known technology in the industry. The invention adopts low-temperature co-fired ceramic technology and sintering process, and has the advantages that a plurality of materials, such as ceramic materials, glass materials, metal conductive materials, electric resistance materials, heat generating materials, metal electrode materials and organic binders, can be made into a plurality of layers. The substrate structure is completed by one or more co-firing in the sintering furnace, and the sintering temperature can be controlled below 1100 ° C, preferably below 900 ° C, and the metal materials which can be co-fired can be selected more, and the sintering times are more. Less, it is more advantageous in terms of manufacturing time and cost.

One of the manufacturing methods of the composite protective element of the present invention has the following steps: the process comprises mixing a slurry containing inorganic ceramic powder, glass powder and an organic binder into a slurry, and drying it by a doctor blade. a thin piece of embryo; a thin hole in each layer to produce the required holes; filled with conductive material for the transfer of current and heat; and then screen printed circuit, electrode, and heat generating components The thin layers of thin embryos are required to be stacked; the plurality of thin green embryos are stacked; and then sintered in a sintering furnace to form a multilayer insulating substrate comprising an upper electrode on the first insulating substrate and a heat generating component in the substrate; Then, using any conventional soldering method or fixing technique or electrical connection method, the fusible conductor is fixed on the upper electrode to form a current path between the first upper electrode and the second upper electrode.

Moreover, another manufacturing method of the composite protection element of the present invention is produced by using a plurality of low temperature co-fired ceramic sintering processes, which has the following steps: Inorganic ceramic powder, glass powder and organic binder are mixed into a slurry of mud, which is formed into a thin piece of raw embryo after being shaped and dried by a doctor blade; the required holes are punched in each layer of thin green embryos; and the conductive material is filled in; Transmitting current and thermal energy between the upper electrode and the lower electrode or between the inner electrode and the second upper electrode or between the inner electrode and the heat collecting electrode; and then using the screen printing to connect the inner electrode with the conductive layer or the inner electrode The lower electrode and the conductive layer are printed on the thin layers of the desired thin layer; the plurality of thin green embryos are stacked; and then sintered in a sintering furnace to manufacture the inner electrode and the conductive layer or the inner electrode, the lower electrode and the conductive layer. a second insulating substrate; printing the heat generating material on the inner electrode on the second insulating substrate by screen printing; and using a thin green embryo (perforated) to cover the heat generating material, the inner electrode, and On the second insulating substrate or by screen printing, the first insulating substrate material (including a slurry containing inorganic ceramic powder, glass frit and organic binder mixed into a slurry) is printed on the heat generating material, the internal electrode, and the first Two-layer insulation On the substrate; the conductive layer and the upper electrode are printed on the first insulating substrate by screen printing; and then sintered in a sintering furnace to form an upper electrode on the first insulating substrate and heat generation in the substrate Multi-layer insulating substrate of the component; finally, the solderable conductor is fixed on the upper electrode by any conventional welding method or fixing technique or electrical connection method to form a current between the first upper electrode and the second upper electrode path.

It should be specially noted that: of course, a high temperature co-fired ceramic (HTCC) substrate, a similar step can be used to fabricate a multilayer insulating substrate comprising an upper electrode on a first insulating substrate and a heat generating component in the substrate, only in selection The material is different from the sintering temperature (higher than 1100 ° C). Finally, the meltable conductor is fixed on the upper electrode by any conventional welding method or fixing technique or electrical connection method to form the first upper electrode and the first electrode. The current path between the two upper electrodes.

Material and process type of substrate in composite protection element of the present invention Also included are organic PCBs, FR4 PCBs, FR5 PCBs, and other PCBs made of polymer materials and glass fibers. The type and material or process of this substrate is not intended to limit the invention, any conventional substrate materials and processes, as long as Methods and materials for making a heat generating component in a substrate are within the scope of the invention.

100, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 200, 200a, 200b, 200c, 200d, 300, 300a ‧ ‧ composite protection elements

110, 110a, 110b, 110c, 110d, 110e, 110g, 110h, 110i, 210a, 210f‧‧‧ substrate

111, 111g, 111i, 211a, 211f‧‧‧ first insulating substrate

112, 112g, 112i, 212a, 212f‧‧‧ second insulating substrate

113g, 113i, 213f‧‧‧ third insulating substrate

114i‧‧‧4th insulating substrate

118, 118a1, 118a2, 118a3, 118a4, 118g5, 118i5, 118i6, 218a, 218f5‧‧‧ conductive layer

120, 120a, 120b, 120c, 120a, 120h, 120i, 220a, 220c‧‧‧ upper electrode 121, 221a‧‧‧ first upper electrode

122, 122b, 122c, 122h, 222a‧‧‧ second upper electrode

123‧‧‧ third upper electrode

124‧‧‧fourth upper electrode

225a, 225c‧‧ ‧ collector electrode

127, 227‧‧ ‧ adsorption line

128, 228‧‧‧Accessories

129, 129d, 229a, 229b‧‧‧ suppression arc layer

130, 230‧‧‧ lower electrode

131, 231‧‧‧ first lower electrode

132, 232‧‧‧ second lower electrode

133, 233‧‧‧ third lower electrode

134, 234‧‧‧ fourth lower electrode

135‧‧‧ fifth lower electrode

140, 140a, 140h, 240, 240a, 240b, 240c‧‧‧ solder

170, 170a, 270a, 270b‧‧‧ fusible conductor

170d1‧‧‧ wide section

170d2‧‧‧ narrow 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, 180a, 180b, 180g, 180h, 180i, 280a, 280f‧‧‧ heat generating components

188, 188b, 189b, 188g1, 188g2, 188h1, 188h2, 188i1, 188i2, 188i3, 288a, 288f1, 288f2‧‧‧ heat-generating materials

181b, 181b, 181g, 181h, 181i, 281a, 281f‧‧‧ first internal electrodes

182, 182b, 182g, 182h, 182i, 282a, 282f‧‧‧ second internal electrode

183b, 183g, 183h, 183i, 283f‧‧‧ third internal electrodes

184b, 184g, 184h, 184i, 284f‧‧‧ fourth internal electrode

185i‧‧‧ fifth internal electrode

186i‧‧‧ sixth internal electrode

190‧‧‧Insulated casing

191, 291‧‧‧ side electrode

271a‧‧‧Right fusible conductor

272a‧‧‧left fusible conductor

273b‧‧‧ narrow and thick ends

274b‧‧‧ middle and wide section

H‧‧‧ Absolute value of the height difference between the fifth sub-electrode and the second sub-electrode or the first sub-electrode

1 is an equivalent circuit diagram of a composite protection element of the present invention.

1-2 is an equivalent circuit diagram of two sets of resistance output composite protection elements of the present invention.

1-3 are equivalent circuit diagrams of three sets of resistance output composite protection elements of the present invention.

1A is a top plan view of a composite protection element according to a first embodiment of the present invention.

Fig. 1B is a schematic cross-sectional view taken along line X-X' of Fig. 1A.

Fig. 1C is a schematic cross-sectional view taken along line Y-Y' of Fig. 1A.

1D is a top plan view of a composite protection element according to a second embodiment of the present invention.

Fig. 1E is a schematic cross-sectional view taken along line X-X' of Fig. 1D.

Fig. 1F is a schematic cross-sectional view taken along line Y-Y' of Fig. 1D. .

1G is a cross-sectional view showing a composite protection element according to a third embodiment of the present invention.

1H is a top plan view of a composite protection element according to a fourth embodiment of the present invention.

1I is a top plan view of a composite protection element according to a fifth embodiment of the present invention.

1J is a top plan view of a composite protection element according to a sixth embodiment of the present invention. .

Fig. 1K is a schematic cross-sectional view taken along line Y-Y' of Fig. 1J.

1L is a schematic cross-sectional view showing a composite protection element according to a seventh embodiment of the present invention.

1M is a top plan view of a composite protection element according to an eighth embodiment of the present invention.

Figure 1N is a schematic cross-sectional view taken along line X-X' of Figure 1M.

Fig. 10 is a schematic cross-sectional view taken along line Y-Y' of Fig. 1M.

1P is a cross-sectional view showing a composite protection element according to a ninth embodiment of the present invention.

FIG. 1Q is a top plan view of a composite protection element according to a tenth embodiment of the present invention.

1R is a cross-sectional view showing a composite protection element according to an eleventh embodiment of the present invention.

1S is a schematic cross-sectional view of another composite protection element of the first embodiment.

1T is a schematic cross-sectional view showing another composite protection element of the sixth embodiment.

2 is an equivalent circuit diagram of another composite protection element of the present invention.

2-1 is an equivalent circuit diagram of another two types of resistance output composite protection elements according to the present invention.

2A is a top plan view of a composite protection element according to a twelfth embodiment of the present invention.

Fig. 2B is a schematic cross-sectional view taken along line X-X' of Fig. 2A.

Fig. 2C is a schematic cross-sectional view taken along line Y-Y' of Fig. 2A.

2D is a top plan view of a composite protection element according to a thirteenth embodiment of the present invention.

Fig. 2E is a schematic cross-sectional view taken along line Y-Y' of Fig. 2D.

2F is a top plan view of a composite protection element according to a fourteenth embodiment of the present invention.

2G is a cross-sectional view showing a composite protection element according to a fifteenth embodiment of the present invention.

2H is a top plan view of a composite protection element according to a sixteenth embodiment of the present invention.

Figure 2I is a schematic cross-sectional view taken along line X-X' of Figure 2H.

Figure 2J is a schematic cross-sectional view taken along line Y-Y' of Figure 2H.

2K is a cross-sectional view showing a composite protection element according to a seventeenth embodiment of the present invention.

2L is a schematic cross-sectional view showing another composite protection element of the twelfth embodiment.

2M is a schematic cross-sectional view showing another composite protection element of the thirteenth embodiment.

Figure 3-1 is a schematic cross-sectional view of a two-layer coated fusible conductor.

Figure 3-2 is a schematic cross-sectional view of a three-layer coated fusible conductor.

Figure 3-3 is a schematic cross-sectional view of a three-layer layered fusible conductor.

Figure 3-4 to Figure 3-10 are schematic cross-sectional views of two different layered fusible conductors.

4 is an application circuit diagram of a composite protection device incorporating the present invention.

Figure 4-1 is an application circuit diagram incorporating a composite protection element of the present invention.

4-2 is an application circuit diagram including a composite protection element of the present invention.

4-3 is an application circuit diagram including a composite protection element of the present invention.

4-4 is an application circuit diagram including a composite protection element of the present invention.

In order to further understand the features and technical contents of the present invention, reference is made to the following related embodiments, which are described in detail below with reference to the accompanying drawings: FIG. 1A is a plan view of the composite protection element 100 of the first embodiment of the present invention. schematic diagram. FIG. 1B is a cross-sectional view of the composite protection device 100 of FIG. 1A taken along line XX′. 1C is a cross-sectional view of the composite protection device 100 of FIG. 1A taken along line Y-Y'. Referring to FIG. 1A , FIG. 1B and FIG. 1C simultaneously, the composite protection component 100 of the present embodiment includes a substrate 110 , a heat generating component 180 , an upper electrode 120 , and at least one fusible conductor 170 . In detail, the substrate 110 is a multi-layer structure including a first insulating substrate 111, a second insulating substrate 112 and at least one conductive layer 118 (three conductive layers 118 are illustrated in FIG. 1A), and the first insulating substrate 111 and the second insulating substrate 112 may be a single layer structure or a multilayer structure, and the thickness of the first insulating substrate 111 is smaller than the thickness of the second insulating substrate 112, and the thickness of the first insulating substrate 111 is less than 0.1. Preferably, the thickness of the second insulating substrate 112 is at least twice the thickness of the first insulating substrate 111, and the type of the substrate 110 may include an organic substrate or a glass fiber. An epoxy substrate (such as FR4 or FR5) or an inorganic substrate or a ceramic substrate (such as an LTCC substrate or an HTCC substrate), etc., preferably a ceramic substrate or a low temperature co-fired ceramic (LTCC) substrate, and the material of the substrate 110 includes inorganic Ceramic materials, low temperature co-fired ceramics (LTCC), glass ceramics, glass powder, glass fiber, epoxy resin, alumina, aluminum nitride, zirconia, tantalum nitride, boron nitride, calcium borosilicate, soda lime , aluminum citrate, lead boronic acid, organic binders, etc. One or a combination thereof, or composition of the composite part. The material of the conductive layer 118 includes a composite of one of or a combination of gold, silver, platinum, copper, and the like. The upper electrode 120 is disposed on the substrate 110 and includes a first upper electrode 121 and a second upper electrode 122. The upper electrode 120 may be a single layer metal or a multi-layer metal structure, and the material of each layer includes copper, tin, lead, iron, nickel, aluminum, titanium, platinum, tungsten, zinc, lanthanum, cobalt, palladium, silver, gold. An alloy of one or a combination of platinum, carbonyl iron, nickel carbonyl, cobalt carbonyl, or the like. The heat generating component 180 is disposed in the substrate 110 and includes a heat generating material 188 and a first inner electrode 181 and a second inner electrode 182. The first inner electrode 181 is electrically connected to one end of the heat generating material 188, and the second inner electrode 182 is electrically coupled to the other end of the heat generating material 188, and the first inner electrode 181 is electrically coupled to the second upper electrode 122 via a conductive layer 118 (or a plurality of conductive layers 118). It is particularly worth mentioning that the thinner or smaller the thickness H, H of the first insulating substrate 111 between the second upper electrode 122 and the heat generating material 188, the smaller or lower the thermal resistance, the heat generation. The faster the heat generated by material 188 is conducted to second upper electrode 122. In this embodiment, the heat generating material 188 is made of one of ruthenium dioxide (RuO ₂ ), ruthenium oxide, ruthenium, copper, palladium, platinum, platinum, molybdenum, tungsten, an organic binder or an inorganic binder. In some of the compositions, the power that the heat generating material 188 can withstand or the heat energy that can be generated is related to its own resistance or impedance. The impedance of the heat generating material 188 can be selected from the ratio of the formulation or formulation of the different materials or the length of the heat generating material 188. Determined with the cross-sectional area (width and thickness). The first inner electrode 181 and the second inner electrode 182 may be a single layer metal or a multi-layer metal structure, and the material of each layer includes copper, tin, lead, iron, nickel, aluminum, titanium, platinum, tungsten, zinc, lanthanum. An alloy of one or a combination of cobalt, palladium, silver, gold, carbonyl iron, nickel carbonyl, cobalt carbonyl, or the like. 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. -5, the multi-layer structure may be coated or layered, as shown in Figure 3-1 is a two-layer cladding type, the first layer of fusible conductor 170 (T1) is coated with 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 an alloy or a composite of one of or a combination of gold, silver, copper, aluminum, palladium, platinum, tin, lead, indium, antimony, bismuth, or the like. In the embodiment, the material for electrically connecting the fusible conductor 170 and the upper electrode 120 includes one of or a combination of solder paste, silver paste, tin, copper, silver, gold, rhodium, tin-silver alloy, tin-lead alloy, and the like. The alloy is formed by fixing the fusible conductor 170 above the first upper electrode 121 and the second upper electrode 122. It can be regarded as one of the methods and materials for electrical connection. However, it is not limited to this. Any welding method or fixed technology or electrical connection method can be used without any electrical connection. The connection is within the scope of the present invention. Fig. 1 is an equivalent circuit diagram including the composite protection element 100 of the first embodiment, wherein the main symbols associated with Figs. 1A, 1B and 1C are labeled, and Fig. 4 is An application circuit diagram including the composite protection component 100 of the first embodiment. The application circuit diagram includes a power supply circuit, an energy storage device, an abnormality detection control circuit, a switching component, and a composite protection component. Please refer to FIG. 1 and FIG. 1A at the same time. 1B, 1C and FIG. 4, how the composite protection element 100 of the present embodiment operates as follows: In detail, the input current will flow from the first upper electrode 121, the fusible conductor 170, and the second upper electrode 122 to the storage. The device (or one end of the battery) provides a charging current required for the energy storage device (or battery), and the output current is from the second upper electrode 122, the fusible conductor 170, and the first upper electrode 121. To external circuits, the voltage and current required for external devices. When an overcurrent (or abnormal current) event occurs, the fusible conductor 170 will generate heat due to excessive current passing through. When the power is greater than the specification of the fusible conductor 170, the fusible conductor 170 is blown to reach an overcurrent. Protected features. The current specification of the fusible conductor 170 can be selected to determine the ratio of the different material formulations or formulations or the cross-sectional area (width and thickness) of the fusible conductor 170. Another abnormal event is an overvoltage (or overcharge) or overtemperature event. When an overvoltage or overtemperature event occurs, the input current does not have an abnormal condition, so the current flowing through the fusible conductor 170 does not generate enough heat. The fusible conductor 170 is blown. At this time, the abnormality detecting control circuit detects that an overvoltage event has occurred in the energy storage device, and provides a signal to the switching element via the output terminal o1, and is connected to the second inner electrode 182 of the heat generating component 180. The switching element is turned on, that is, the D and S ends of the switching element of the second internal electrode 182 of the external heat generating component 180 are switched to a low impedance or conduction state, so that a current flows through the heat generating component 180 (from the first inner electrode 181). From the heat generating material 188 to the second inner electrode 182) to the S terminal of the switching element, in a normal state, the resistance or impedance of the D terminal of the external switching element of the second internal electrode 182 of the heat generating component 180 is high, exhibiting an open state. Current is not allowed to flow through the heat generating component 180 to the S terminal of the switching element. By selecting the appropriate compound protection component specification (eg, the resistance or power consumption of the heat generating component 180), the current at this time can be made. When flowing through the heat generating component 180, sufficient thermal energy is generated to conduct thermal energy to the second upper electrode 122 via the first insulating substrate 111 and the conductive layer 118 above the heat generating material 188 to achieve the purpose of fusing the fusible conductor 170. Further, the power supply circuit is cut off, the charging operation cannot be continued, and the overvoltage protection function is achieved. Of course, if the abnormality detection control circuit can detect the occurrence of an overtemperature event, the overtemperature protection function can also be achieved. The equivalent circuit diagram of Figure 1 is also applicable to other implementations such as 100a, 100a1, 100b, 100c, 100d, 100e, and 100f. The composite protection component of all other embodiments of the present invention can be applied to the application circuit illustrated in FIG. 4 or FIG. 4-1 or FIG. 4-2 according to actual needs.

In addition, referring to FIG. 1S, the composite protection component 100 of the first embodiment of the present invention further includes an arc suppression layer 129 disposed between the first upper electrode 121 and the second upper electrode 122 and coated on the first A portion of the surface of the fusible conductor 170 between the 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 arc suppression layer 129 is characterized by a 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, an arc may be generated to generate high heat, causing damage of the composite protection element 100, so that the arc layer 129 is inhibited from covering the middle portion of the fusible 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 middle portion of the fusible conductor 170 can suppress the generation of the arc and reduce the occurrence of the arc. The high heat causes damage to the composite protection element 100.

1D is a top plan view of a composite protection element 100a according to a second embodiment of the present invention. 1E is a cross-sectional view of the composite protection element 100a of FIG. 1D taken along line X-X'. Figure 1F is a cross-sectional view of the composite protection element 100a of Figure 1D taken along line Y-Y'. The composite protection element 100a of the present embodiment includes a substrate 110, a heat generating component 180, an upper electrode 120a, a lower electrode 130, a side electrode 191, and a fusible conductor 170. Referring to FIG. 1D, FIG. 1E, FIG. 1F, FIG. 1A, FIG. 1B and FIG. 1C, the composite protection component 100a of the second embodiment is similar to the composite protection component 100 of the first embodiment, but the main difference is In the case of this embodiment The protective element 100a further includes a lower electrode 130 and a side electrode 191, and the upper electrode 120a is disposed on the substrate 110, and includes a first upper electrode 121, a second upper electrode 122, a third upper electrode 123, and a fourth upper surface. Electrode 124. The lower electrode 130 is disposed on the substrate 110 opposite to the upper electrode 120a, and includes a first lower electrode 131, a second lower electrode 132, a third lower electrode 133, and a fourth lower electrode 134. The side electrodes 191 are disposed on the four side surfaces of the substrate 110, each side surface is provided with one or a plurality of side electrodes 191, and the upper electrode 120a is electrically connected to the lower electrode 130 via the side electrodes 191. The upper electrode 120a, the lower electrode 130, and the side electrode 191 may be a single-layer metal or a multi-layer metal structure, and the materials of the layers include copper, tin, lead, iron, nickel, aluminum, titanium, platinum, tungsten, zinc, and antimony. An alloy of one or a combination of cobalt, palladium, silver, gold, platinum, carbonyl iron, nickel carbonyl, cobalt carbonyl, or the like. It should be particularly noted that the second inner electrode 182 of the heat generating component 180 is also electrically connected to the third upper electrode 123 and the third lower electrode 133 via one or a plurality of side electrodes 191. The composite protection component 100a of the present invention can be applied to overcurrent protection, so the rated current is also divided into magnitude or height. If the rated current is small or low, the rated current can flow from the lower electrode 130 through the side electrode 191 to the upper electrode 120a, or The side electrode 191 is passed from the upper electrode 120a to the lower electrode 130. If the rated current is large or high, the side electrode 191 electrically connecting the upper electrode 120a and the lower electrode 130 may not be able to withstand a large rated current. The solution for providing a high rated current in this embodiment is the composite protection element 100a of the present embodiment. Further comprising at least one conductive layer 118a1, at least one conductive layer 118a2, at least one conductive layer 118a3 and at least one conductive layer 118a4, all of the conductive layers 118a1, 118a2, 118a3 and 118a4 are disposed in the substrate, the material of which comprises gold, silver, A composite of copper or the like, or a combination thereof. Each of the conductive layers 118a1, 118a2, 118a3, and 118a4 electrically connects the respective upper electrode 120a and the lower electrode 130, so that the current path between the upper electrode 120a and the lower electrode 130 increases, and the rated current that can pass can also be increased or increased. , wherein the conductive layer 118a3 is electrically connected to the heat at the same time A second inner electrode 182 of assembly 180 is produced. As for the magnitude of the current of the fusible conductor 170, the ratio of the different material formulations or formulations or the cross-sectional area (width and thickness) of the fusible conductor 170 can be selected as explained in the first embodiment. What should be particularly noted is the structure of the composite protection component 100a of the present embodiment, which is particularly suitable for product design in which the composite protection component needs to be reflowed on the application circuit substrate. The structural design of the embodiment can allow the lower electrode 130 and the external The electrodes on the application circuit substrate are electrically connected so that the current of the external circuit can flow through the lower electrode 130 through the composite protection element 100a of the present invention. 1 includes an equivalent circuit diagram of the second embodiment, wherein the main symbols in FIGS. 1D, 1E, and 1F are labeled. The composite protection device 100a of the present embodiment is similar to the composite protection device 100 of the first embodiment. However, the lower electrode 130 is electrically connected to the external circuit, and a plurality of conductive layers 118a1, 118a2, 118a3, and 118a4 and the side electrode 191 are added, so that the rated current passing through the protection element can be increased. There are three points to be described. One is the fourth upper electrode 124, the fourth lower electrode 134, and the side electrode 191 or the conductive layer 118a4 connecting the fourth upper electrode 124 and the fourth lower electrode 134 in this embodiment. The electrical function or technical feature is only for the symmetry of the structural design, so the embodiment may not include the fourth upper electrode 124, the fourth lower electrode 134, and the fourth upper electrode 124 and the fourth lower electrode 134. The side electrode 191 or the conductive layer 118a4 does not affect the electrical characteristics or technical features of the present invention. The second method is that the side electrode 191 or the conductive layers 118a1, 118a2, 118a3, and 118a4 are all used to electrically connect the upper electrode 120a and the lower electrode 130. The side electrode 191 or the conductive layers 118a1, 118a2, and 118a3 may be selected according to actual needs. And 118a4 or both (side electrode 191 and conductive layers 118a1, 118a2, 118a3, and 118a4) are within the scope of the present invention as long as the function or purpose of electrically connecting the upper electrode 120a and the lower electrode 130 can be achieved. The third is the third upper electrode 123, the fourth upper electrode 124, the side electrode 191, the lower electrode 130, and the conductive layer (118a1) electrically connecting the upper electrode 120a and the lower electrode 130 in this embodiment. 118a2, 118a3, 18a4), etc., are not shown in other embodiments, but the different components described above may be selected or combined according to actual needs to achieve the desired technical effect. For the description of the operation of the composite protection component 100a of the present embodiment or other parts similar to those of the first embodiment, refer to the description of the composite protection component 100 in the first embodiment, and details are not described herein again.

1G is a schematic cross-sectional view showing a composite protection element 100a1 according to a third embodiment of the present invention. Referring to FIG. 1G and FIG. 1F simultaneously, the composite protection component 100a1 of the third embodiment is similar to the composite protection component 100a of the second embodiment, but the main difference between the two is that the composite protection component 100a1 of the embodiment An insulating housing 190 and an auxiliary material 128 are also included. The auxiliary material 128 may be disposed on the fusible material 170 or on the fusible material 170 and the second upper electrode 122, the auxiliary material 128 being characterized by a melting point or a liquidus point lower than the fusible material 170, the material of which includes tin, a composite of copper, silver, gold, lead, antimony, flux, rosin resin, surfactant, activator, softener, organic solvent, etc., or a combination thereof, whose main function is to prevent the fusible conductor 170 and the surface of the second upper electrode 122 are oxidized, and when the heat generating component 180 generates heat or the fusible conductor 170 generates heat, the auxiliary material 128 may melt earlier or earlier than the soluble conductor 170, contributing to the fusible conductor 170. Melting, it is also possible to increase the wetting and adsorption force of the surface of the second upper electrode 122 so that the melted conductor 170 that is later melted can be quickly disconnected from the unmelted fusible conductor 170, rapidly with the auxiliary material 128. The eutectic and diffusion adhere to the second upper electrode 122, shortening the time during which the composite protection element 100a1 completes the protection operation. The insulating housing 190 is disposed on the substrate 110 and covers all objects on the upper surface of the substrate 110, and the material thereof includes alumina, polydiether ketone, nylon, rubber, thermoplastic resin, thermosetting resin, ultraviolet curing resin, and A composite of one or a combination thereof of a phenol formaldehyde resin or the like, whose main function is to prevent a foreign object or an external force from damaging the structure on the substrate 110. It should be particularly noted that the auxiliary material 128 and the insulating housing 190 are provided in this embodiment. In other embodiments, it is not shown, but the different components described above may be selected or combined according to actual needs to achieve the desired technical effect. For the description of the operation of the composite protection component 100a1 of the present embodiment or other similar parts of the second embodiment, please refer to the description of the composite protection component 100a in the second embodiment, and details are not described herein again.

1H is a top plan view of a composite protection element 100b according to a fourth embodiment of the present invention. Referring to FIG. 1H and FIG. 1A simultaneously, the composite protection component 100b of the fourth embodiment is similar to the composite protection component 100 of the first embodiment, but the main difference between the two is that the second upper electrode 122b of the embodiment The outer portion 122b1, the narrow portion 122b2, and the heat collecting portion 122b3 are included. The cross-sectional area of the narrow portion 122b2 is smaller than the cross-sectional area of the outer portion 122b1 and the heat collecting portion 122b3. The external portion 122b1 of the second upper electrode 122b can be electrically connected to an external circuit, and the heat collecting portion 122b3 of the second upper electrode 122b is electrically connected to the heat generating component 180 via the conductive layer 118 when an overvoltage or overcharge or overtemperature event occurs. The heat collecting portion 122b3 collects the heat generated by the heat generating unit 180, thereby melting the fusible conductor 170, and allowing the melted (liquefied) meltable conductor 170 to be adsorbed on the heat collecting portion 122b3 of the second upper electrode 122b, narrow. The portion 122b2 is a smaller (or smallest) cross-sectional area of the second upper electrode 122b. The main function is to reduce the temperature of the heat collecting portion 122b3 by the temperature of the external portion 122b1, and also reduce the heat loss of the heat collecting portion 122b3. The heat portion 122b3 surely collects the heat energy generated by the heat generating assembly 180, rapidly melting the fusible conductor 170, and achieving the function of protection. For the description of the operation of the composite protection component 100b of the present embodiment or other parts similar to those of the first embodiment, refer to the description of the composite protection component 100 in the first embodiment, and details are not described herein again.

1I is a top plan view of a composite protection element 100c according to a fifth embodiment of the present invention. The composite protection component 100c of the fifth embodiment is a modification of the fourth embodiment. Please refer to FIG. 1I and FIG. 1H simultaneously, and the composite protection component 100c of the fifth embodiment is combined with the fourth embodiment. The protection element 100b is similar, but the main difference between the two is that the heat collecting portion 122c3 of the second upper electrode 122c is different from the heat collecting portion 122b3 of the second upper electrode 122b in the fourth embodiment. In the fifth embodiment, the shape of the heat collecting portion 122c3 of the second upper electrode 122c is centered on a portion overlapping the fusible conductor 170, and extends outward in three directions, and the width of the outwardly extending portion is wider than the width of the central portion. Large, the advantage of this design is that when the fusible conductor 170 is melted (liquefied), the molten fusible conductor 170 is more easily extended outward from the center and adsorbed on the heat collecting portion 122c3 of the wider second upper electrode 122c. Of course, the heat collecting portion 122c3 of the second upper electrode 122c may extend in a different number of directions, and the shape may be any shape. The shape of the heat collecting portion 122c3 is designed to enable the molten fusible conductor to be adsorbed more quickly in the set. The hot portion 122c3 is within the scope of the present invention. The embodiment further includes an auxiliary material 128c (similar to the auxiliary material 128 in the third embodiment), the auxiliary material 128c being configurable on the fusible conductor 170 or on the fusible conductor 170 and the second upper electrode 122c, the main The function is to prevent oxidation of the surface of the fusible conductor 170 and the second upper electrode 122c, and when the heat generating component 180 generates heat or when the fusible conductor 170 generates heat, the auxiliary material 128c may melt or liquefy earlier than the fusible conductor 170, which is helpful. The melting of the fusible conductor 170 also enhances the wetting and adsorption forces of the surface of the second upper electrode 122c, 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 128c and diffused and adhered to the second upper electrode 122c. The material of the auxiliary material 128c 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 protective element of the present invention, it is preferred that the melting point or liquidus point temperature of the auxiliary material 128c is lower than the melting point or liquidus point temperature of the fusible conductor 170. For the description of the operation of the composite protection component 100c of the present embodiment or other parts similar to those of the fourth embodiment, please refer to the description of the composite protection component 100b in the fourth embodiment, and details are not described herein again.

1J is a top plan view of a composite protection element 1ood of a sixth embodiment of the present invention. 1K is a cross-sectional view of the composite protection device 100d of FIG. 1J along the line YY′, please refer to FIG. 1J, FIG. 1K and FIG. 1I, the composite protection component 100d of the sixth embodiment and the fifth embodiment. The composite protection element 100c is similar, but the main difference between the two is that the shape and thickness of the fusible conductor 170d of the sixth embodiment are different from that of the fusible conductor 170 of the fifth embodiment, and the fusible conductor 170d of the sixth embodiment The invention comprises a wide portion 170d1 and a narrow portion 170d2. The cross-sectional area of the wide portion 170d1 is similar to (or the same) as the cross-sectional area of the narrow portion 170d2, but the thickness is different, and the thickness of the wide portion 170d1 is lower or smaller than the narrow thickness. The thickness of the portion 170d2, the wide portion 170d1 is electrically connected to the second upper electrode 122c, and the narrow portion 170d2 is electrically connected to the first upper electrode 121. The technical feature or advantage of the fusible conductor 170d of the composite protection element 100d of the present embodiment is that when an overcurrent event occurs, the wide portion 170d1 of the fusible conductor 170d is similar (or identical) to the narrow thickness portion 170d2. Since the cross-sectional area is the same as the current of the thick portion 170d1 and the narrow portion 170d2 through the fusible conductor 170d, when the overcurrent passes through the fusible conductor 170d, the fusible conductor 170d is heated and melted to achieve overcurrent protection. Features. When an overvoltage or overtemperature event occurs, the heat generating component 180 generates heat (the first embodiment is described in detail, and details are not described herein again), and the heat collecting portion 122c3 of the second upper electrode 122c collects the heat generating component 180. The thickness of the wide portion 170d1 of the fusible conductor 170d that is thermally coupled to the second upper electrode 122c is relatively thin, so that the heat generating assembly 180 can generate less thermal energy to achieve the effect of melting the fusible conductor 170d more quickly (or Function), the thickness of the fusible conductor 170 in the fifth 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 fuse the fusible conductor 170, that is, It takes a long time to melt the fusible conductor 170, so that the speed of the overvoltage or overtemperature protection action of the composite protection element 100c of the fifth embodiment is slower than that of the composite protection element 100d of the sixth embodiment. The design of the fusible conductor 170d in this embodiment, In other embodiments, they may be combined or replaced according to actual needs to achieve the desired technical effect. For a description of how to operate the composite protection element 100d of the present embodiment or other parts similar to those of the fifth embodiment, refer to the description of the composite protection element 100c in the fifth embodiment, and details are not described herein again.

In addition, referring to FIG. 1K and FIG. 1T, the composite protection component 100d of the sixth embodiment of the present invention further includes an arc suppression layer 129d disposed between the first upper electrode 121 and the second upper electrode 122c. The surface of the fusible conductor 170d covering a portion between the first upper electrode 121 and the second upper electrode 122c. The material of the arc suppression layer 129 includes a composite composite of one or a part thereof, such as ruthenium rubber, inorganic ceramics, metal oxide, magnesium hydroxide, and water glass, and the arc suppression layer 129d is characterized in that the soluble conductor 170d is When the heat is melted and starts to be disconnected, since the distance at the beginning of the disconnection is very close, an arc may be generated to generate high heat, causing damage of the composite protection element 100d, so that the arc layer 129d is prevented from covering the middle portion of the fusible conductor 170d. When the fusible conductor 170d between the first upper electrode 121 and the second upper electrode 122c starts to be blown, the arc suppression layer 129d on the middle surface of the fusible conductor 170d can suppress the generation of the arc and reduce the arc generation. The high heat causes damage to the composite protection element 100d.

1L is a schematic cross-sectional view of a composite protection device 100e according to a seventh embodiment of the present invention. Referring to FIG. 1L and FIG. 1K simultaneously, the composite protection component 100e of the seventh embodiment is similar to the composite protection component 100d of the sixth embodiment. The main difference between the two is that the seventh embodiment further includes an auxiliary material 128e which can be disposed on the fusible conductor 170d or on the fusible conductor and the second upper electrode 122c, and the auxiliary material 128e thereof The main effects are the same as their materials and other related descriptions, such as the description of the auxiliary material 128 or 128c in the third or fifth embodiment, and will not be described herein. As for the composite protection element 100e of the present embodiment, how to operate or otherwise For a description of the similar parts of the sixth embodiment, please refer to the description of the composite protection element 100d in the sixth embodiment, and details are not described herein again.

1M is a top plan view of a composite protection element 100f according to an eighth embodiment of the present invention. 1N is a cross-sectional view of the composite protection element 110f of FIG. 1M taken along line X-X'. Figure 10 is a cross-sectional view of the composite protection element 100f of Figure 1M taken along line Y-Y'. Referring to FIG. 1M, FIG. 1N, FIG. 1O, FIG. 1J, FIG. 1K and FIG. 1L, the composite protection element 100f of the eighth embodiment is similar to the composite protection element 100e of the seventh embodiment, but the main differences therebetween It is that the eighth embodiment further includes at least one adsorption line 127. The adsorption line 127 is disposed at one end of the heat collecting portion 122c3 of the second upper electrode 122c and extends across the soluble conductor 170d and the auxiliary material 128e to the other end of the heat collecting portion 122c3, and a portion of the adsorption line 127 above the soluble conductor 170d. The distance D between the conductive conductor 170d and the fusible conductor 170d is less than 0.3 mm, preferably between 0.001 mm and 0.15 mm, and the adsorption line 127 is a single layer or a multi-layered structure. Each layer material comprises an alloy of one of or a combination of copper, tin, lead, iron, nickel, aluminum, titanium, platinum, tungsten, zinc, lanthanum, cobalt, palladium, silver, gold, platinum, etc. (for example: copper nickel a plurality of layers of tin alloy (nickel-tin alloy) or a combination thereof (for example, copper tin plating, copper gold plating), the adsorption line 127 can be soldered, arc welded, laser welded, thermocompression welded, ultrasonicated In the manufacturing method such as welding, both ends of the adsorption line 127 are fixedly and electrically connected to opposite ends of the heat collecting portion 122c3, but not limited thereto, any conventional welding method or fixing technique or electrical connection method. It is within the scope of the invention to achieve a fixed and electrical connection. 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 of the drawing may also 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 170d. Connected (distance 0mm), so the shape of the adsorption line 127 spanning the fusible conductor 170d and the auxiliary material 128e may be any shape, the heat conduction line itself may be any shape, the surface of the adsorption line 127 may be the surface of the soluble conductor 170d It is within the scope of the invention to connect or not. The auxiliary material 128e is disposed between the adsorption line 127 and the wide portion 170d1 of the fusible conductor 170d and physically physically connects the adsorption line 127 and the fusible conductor 170d, or the auxiliary material 128e is disposed on the adsorption line 127 and the fusible conductor 170d. Between the wide portions 170d1 and between the adsorption line 127 and the heat collecting portion 122c3 of the second upper electrode 122c, and physically connecting the adsorption line 127 and the fusible conductor 170d, the physical connection between the adsorption line 127 and the second upper electrode is also physically connected. a collector portion 122c3 of 122c, the auxiliary material 128e comprising one or a combination of a rosin resin, a flux, a surfactant, an activator, a softener, an organic solvent, tin, lead, silver, antimony, copper, gold, or the like. Complex. The auxiliary material 128e has a function of preventing the surface of the fusible conductor 170d from being oxidized, conducting heat energy and assisting the surface of the adsorption line 127, and guiding the melting (or liquefaction) by surface tension and capillary phenomenon. The molten conductor 170d is adsorbed on the adsorption line 127, and may also guide the molten (or liquefied) fusible conductor 170d to a portion of the periphery of the heat collecting portion 122c3 of the second sub-electrode 122c to accelerate separation from the unmelted fusible conductor 170d. Or disconnect to reduce the action time required for overvoltage or overtemperature protection. In detail, when an overvoltage or overtemperature event occurs, the heat generating component 180 generates heat (refer to the description of the first embodiment, and details are not described herein again), and the heat collecting portion 122c3 of the second sub-electrode 122c collects the heat generating component. The heat energy generated by 180, since the material of the adsorption line 127 includes a metal material, its thermal energy is also transmitted to the adsorption line 127, causing the adsorption line 127 to generate heat and conduct heat to the upper surface of the fusible conductor 170d via the auxiliary material 128e or directly. Therefore, both faces (upper and lower faces) of the fusible conductor 170d are simultaneously heated, and the melting of the fusible conductor 170d between the adsorption line 127 and the heat collecting portion 122c3 can be accelerated until a partially fusible conductor on the heat collecting portion 122c3 170d is completely melted, and is disconnected from the partially fusible conductor 170d on the first upper electrode 121 into two parts, and is electrically The flow cannot flow from the first upper electrode 121 to the heat collecting portion 122c3 of the second upper electrode 122c, and the function of overvoltage or overtemperature protection is achieved. When an overcurrent event occurs, the fusible conductor 170d generates heat. Since the liquefaction or liquidus temperature of the auxiliary material 128e is lower than the fusible material 170d, the auxiliary material 128e is first liquefied, and then the fusible material 170d is liquefied by surface tension and The capillary phenomenon, the melted (or liquefied) meltable conductor 170d is adsorbed on the adsorption line 127, and the molten (or liquefied) fusible conductor 170d can also be guided to the peripheral portion of the heat collecting portion 122c3 of the second sub-electrode 122c. Accelerating the separation or disconnection from the unmelted fusible conductor 170d to achieve the function of overcurrent protection.

1P is a schematic cross-sectional view of a composite protection device 100g according to a ninth embodiment of the present invention. Referring to FIG. 1P and FIG. 1B simultaneously, the composite protection component 100g of the ninth embodiment is similar to the composite protection component 100 of the first embodiment. The main difference between the two is that the substrate 110g in the composite protection element 100g of the ninth embodiment is a multi-layer structure including a first insulating substrate 111g, a second insulating substrate 112g, and a third insulating substrate. 113g and a plurality of conductive layers 118 and 118g5, the first insulating substrate 111g, the second insulating substrate 112g, and the third insulating substrate 113g may be a single layer structure or a multilayer structure, and the first insulating substrate 111g and The thickness of the third insulating substrate 113g is similar, the thickness of the second insulating substrate 112g is thicker, and is thicker than the thickness of the first insulating substrate 111g and the third insulating substrate 113g, and the first insulating substrate 111g and the third layer The thickness of the insulating substrate 113g is less than 0.1 mm, preferably less than 0.05 mm, and the thickness of the second insulating substrate 112g is preferably more than twice the thickness of the first insulating substrate 111g and the third insulating substrate 113g. The material of each substrate of the substrate 110g includes ceramic material, low temperature co-fired ceramic (LTCC), glass ceramic, glass, glass fiber, aluminum oxide, aluminum nitride, zirconium oxide, tantalum nitride, boron nitride, calcium borosilicate, A composition of one or a combination of soda lime, aluminosilicate, lead borohydride, a halogen salt, and an organic binder. The materials of the conductive layers 118 and 118g5 include gold, silver, copper, platinum, etc. A composition of one or a combination thereof. The heat generating component 180g includes a heat generating material 188g1, a first inner electrode 181g and a second inner electrode 182g, respectively, which are electrically connected to both ends of the heat generating material 188g1, and a heat generating material 188g2, respectively electrically connected to the third inner ends of the heat generating material 188g2 The electrode 183g and the fourth inner electrode 184g, and the heat generating unit 180g are disposed in the substrate 110g. In detail, the heat generating material 188g1 and the first inner electrode 181g and the second inner electrode 182g which are electrically connected to both ends of the heat generating material 188g1 are respectively disposed on the third insulating substrate 113g, and the first insulating substrate 111g is covered in the third The layer insulating substrate 113g, the heat generating material 188g1, the first inner electrode 181g, and the second inner electrode 182g. The heat generating material 188g2 and the third inner electrode 183g and the fourth inner electrode 184g which are electrically connected to both ends of the heat generating material 188g2 are respectively disposed on the second insulating substrate 112g, and the third insulating substrate 113g covers the second insulating substrate 112g. The heat generating material 188g2, the third inner electrode 183g, and the fourth inner electrode 184g. The second inner electrode 182g is electrically connected to the third inner electrode 183g via the conductive layer 118g5, and the second upper electrode 122 is electrically connected to the first inner electrode 181g via the conductive layer 118. 1-2 is an equivalent circuit diagram of the composite protection component 100g of the ninth embodiment and the composite protection component 100h of the tenth embodiment, wherein the main symbols of FIG. 1P are marked, and the composite protection of the embodiment is shown. The technical features of the component 100g are as follows: Please refer to FIG. 1-2 and FIG. 4-1 at the same time, FIG. 1-2 is an isometric circuit diagram of the composite protection component of the ninth embodiment, and FIG. 4-1 is a ninth implementation. For example, the application circuit diagram of the composite protection component 100g includes a power supply circuit, an energy storage device, an abnormality detection control circuit, a switching component, and a composite protection component 100g. The heat generation component 180g of the composite protection component 100g provides two An internal electrode or an output terminal that can be externally connected, one of which is the second internal electrode 182g, the second is the fourth internal electrode 184g, the impedance of the second internal electrode 182g is the impedance of the heat generating material 188g1, and the fourth internal electrode 184g is output. The impedance is the impedance of the heat generating material 188g1 plus the impedance of the heat generating material 188g2. The advantage of this design is that The system designer can determine the magnitude of the resistance of the heat generating component 180g according to the voltage of the energy storage device or the secondary battery pack, and electrically connect the switching element D end to the second inner electrode 182g or electrically connect the fourth inner electrode 184g. . When an overvoltage event occurs in the energy storage device, the current flowing through the fusible conductor 170 does not have an abnormal condition, so the current flowing through the fusible conductor 170 does not generate enough thermal energy to blow the fusible conductor 170. The control circuit detects an overvoltage or overcharge event of the energy storage device, and provides a signal via the output terminal o1 to turn on the switching element of the second internal electrode 182g or the fourth internal electrode 184g of the heat generating component 180g. That is, switching between the second internal electrode 182g of the external heat generating component 180g and the switching element D and S ends in a low resistance state or a conducting state, or switching between the fourth internal electrode 184g and the switching elements D and S ends. The low resistance state or the conductive state causes current to flow through the heat generating component 180g (from the first inner electrode 181g to the heat generating material 188g1 to the second inner electrode 182g output terminal or from the first inner electrode 181g to the heat generating material 188g1 to the second The inner electrode 182g to the third inner electrode 183g to the heat generating material 188g2 to the fourth inner electrode 184g) to the S terminal of the switching element, the normal state, the heat generating component 180g, the second inner electrode 182g or the fourth inner electrode 184g externally connected to the switch The resistance of the component is high or open circuit, and current is not allowed to flow through the heat generating component 180g to the S terminal of the switching component, and the specification of the appropriate composite protection component is selected (for example, the resistance or power consumption of the heat generating component 180g) ), the current at this time can be generated to generate sufficient thermal energy when flowing through the heat generating component 180g, and conduct heat energy to the second upper electrode 122 via the first insulating substrate 111g and the conductive layer 118 above the heat generating material 188g1. The purpose of melting the fusible conductor 170 is achieved, and the power supply circuit is cut off, and the charging operation cannot be continued to achieve the function of overvoltage protection. Of course, if the abnormality detection control circuit can detect the occurrence of an overtemperature event, the same reason Over temperature protection can also be achieved. For another application circuit, please refer to Figure 1-2 and Figure 4-2 at the same time. Figure 4-2 is a ninth use. A second application circuit diagram of the composite protection component 100g of the embodiment, the application circuit diagram includes a power supply circuit, an energy storage device, an abnormality detection control circuit, two switching elements, and a composite protection component 100g, and FIG. 4-2 and FIG. -1 is similar, but the main difference between the two is that the application circuit of Figure 4-1 has only one switching element, so the D-terminal of the switching element can be electrically connected to the two internal electrodes of the heat generating component 180 (one of which can be selected according to requirements). It is the second inner electrode 182g, and the second is one of the fourth inner electrodes 184g). In the application circuit of Figure 4-2, the abnormality detection control circuit includes four voltage detection input terminals (d1, d2, d3, and d4), which can detect voltages of three batteries in the energy storage device or the secondary battery pack. Is the total voltage connected to the series abnormal? If an overvoltage event occurs in the energy storage device or the secondary battery pack, one of the two output terminals (o1&o2) of the abnormality detection control circuit may be sent to the start signal according to different conditions, so that the D and S ends of one of the switching elements are turned on. Current is caused to flow through the heat generating component 180g (from the first inner electrode 181g to the heat generating material 188g1 to the second inner electrode 182g output end or from the first inner electrode 181g to the heat generating material 188g1 to the second inner electrode 182g to the third The inner electrode 183g to the heat generating material 188g2 to the fourth inner electrode 184g) to the S terminal of the switching element allows the current at this time to generate sufficient thermal energy when flowing through the heat generating component 180g, via the heat generating material 188g1 The first insulating substrate 111g and the conductive layer 118 conduct heat energy to the second upper electrode 122 to achieve the purpose of fusing the fusible conductor 170, thereby cutting off the power supply circuit and failing to continue charging, thereby achieving overvoltage protection. Function, of course, if the abnormality detection control circuit can detect the occurrence of over-temperature events, the same function of over-temperature protection can be achieved. This application circuit allows the user to be more flexible to monitor the voltage state of the energy storage device for a more complete overvoltage protection function. The same temperature protection can also be achieved.

FIG. 1Q is a top plan view of a composite protection element 100h according to a tenth embodiment of the present invention. The isochronous circuit diagram of this embodiment and the composite protection element 100g of the ninth embodiment The effect circuit diagram is the same as FIG. 1-2. Please refer to FIG. 1Q, FIG. 1P and FIG. 1-2 at the same time. The main difference between the composite protection component 100h of the tenth embodiment and the composite protection component 100g of the ninth embodiment is that The heat generating component 180h of the composite protection component 100h of the tenth embodiment includes a heat generating material 188h1, a first inner electrode 181h and a second inner electrode 182h, respectively, electrically connected to the heat generating material 188h1, and a heat generating material 188h2. The third inner electrode 183h and the fourth inner electrode 184h are electrically connected to the two ends of the heat generating material 188h2, respectively, wherein the second inner electrode 182h and the third inner electrode 183h are substantially the same electrode, and do not need to be electrically connected to the second inner portion via the conductive layer. The electrode 182h and the third inner electrode 183h, the heat generating unit 180h are disposed in the substrate 110g, and are disposed on the same insulating substrate (the second insulating substrate 112h). The two sets of heat generating materials 188g1 and 188g2 of the heat generating component 180g of the composite protective element 100g of the ninth embodiment are respectively disposed on the third insulating substrate 113g and the second insulating substrate 112g, and the composite protection of the tenth embodiment Element 100h is different. It should be particularly noted that the composite protection component 100h of the tenth embodiment can replace the composite protection component 100g of the ninth embodiment of FIGS. 4-1 and 4-2, and the second internal electrode 182h of the composite protection component 100h. The switching element can be electrically connected to the fourth inner electrode 184h. For a description of how to operate the composite protection element 100h of the present embodiment or other parts similar to those of the ninth embodiment, refer to the description of the composite protection element 100g in the ninth embodiment, and details are not described herein again.

1R is a schematic cross-sectional view of a composite protection device 100i according to an eleventh embodiment of the present invention, and FIGS. 1-3 are isometric circuit diagrams of the composite protection device 100i of the eleventh embodiment. Referring to FIG. 1R, FIG. 1P, FIG. 1-2 and FIG. 1-3, the composite protection component 100i of the eleventh embodiment is similar to the composite protection component 100g of the ninth embodiment, but the main differences are In one embodiment, the substrate 110i in the composite protection device 100i of the eleventh embodiment is a multi-layer structure including a first insulating substrate 111i, a second insulating substrate 112i, and a third insulating substrate 113i. The fourth insulating substrate 114i and the plurality of conductive layers 118, 118i5, 118i6, the first insulating substrate 111i, the second insulating substrate 112i, the third insulating substrate 113i, and the fourth insulating substrate 114i may be single a layer structure or a multilayer structure, the thickness of the first insulating substrate 111i is similar to that of the third insulating substrate 113i and the fourth insulating substrate 114i, and the thickness of the second insulating substrate 112i is thicker than that of the first insulating substrate 111i is thicker than the third insulating substrate 113i and the fourth insulating substrate 114i. The thickness of the first insulating substrate 111i is less than 0.1 mm, preferably less than 0.05 mm, and the thickness of the second insulating substrate 112i is preferably It is twice or more the thickness of the first insulating substrate 111i, the third insulating substrate 113i, and the fourth insulating substrate 114i. The second heat generating component 180i includes a heat generating material 188i1, a first inner electrode 181i and a second inner electrode 182i electrically connected to the two ends of the heat generating material 188i1, and a heat generating material 188i2, respectively electrically connected to the ends of the heat generating material 188i2. The third inner electrode 183i and the fourth inner electrode 184i, a heat generating material 188i3, respectively electrically connect the fifth inner electrode 185i and the sixth inner electrode 186i at both ends of the heat generating material 188i3, and the heat generating component 180i is disposed in the substrate 110i. In detail, the heat generating material 188i1 and the first inner electrode 181i and the second inner electrode 182i respectively electrically connecting the heat generating material 188i1 are disposed on the third insulating substrate 113i, and the first insulating substrate 111i is covered in the third The layer insulating substrate 113i, the heat generating material 188i1, the first inner electrode 181i, and the second inner electrode 182i, the heat generating material 188i2, and the third inner electrode 183i and the fourth inner electrode 184i respectively electrically connecting the ends of the heat generating material 188i2 are disposed on The fourth insulating substrate 114i is covered, and the third insulating substrate 113i is covered on the fourth insulating substrate 114i, the heat generating material 188i2, the third internal electrode 183i, and the fourth internal electrode 184i, and the heat generating material 188i3 is electrically connected. The fifth inner electrode 185i and the sixth inner electrode 186i at both ends of the heat generating material 188i3 are disposed on the second insulating substrate 112i, and the fourth insulating substrate 114i covers the second insulating substrate 112i, the heat generating material 188i3, and the fifth On the inner electrode 185i and the sixth inner electrode 186i, The second inner electrode 182i is electrically connected to the third inner electrode 183i via the conductive layer 118i5, the fourth inner electrode 184i is electrically connected to the fifth inner electrode 185i via the conductive layer 118i6, and the second upper electrode 122 is connected to the first inner electrode via the conductive layer 118. 181i electrical connection. Please refer to FIG. 4-3 and FIG. 4-4 at the same time. The application circuit of FIG. 4-3 has only one switching element, and the composite protection element 100i of the eleventh embodiment can be used to select the D-terminal electrical connection heat generation of the switching element according to requirements. One of the three internal electrodes (one of which is the second internal electrode 182i, the second is the fourth internal electrode 184i, and the third is the sixth internal electrode 186i) in the assembly 180i. The composite protection component 100i of the eleventh embodiment can also be applied to an application circuit similar to that of FIG. 4-4. The application circuit diagram includes a power supply circuit, an energy storage device, an abnormality detection control circuit, three switching elements, and a composite protection. The component 100i, the abnormality detecting control circuit can detect multiple abnormal voltages of the energy storage device or the secondary battery pack. If an overvoltage event occurs in the energy storage device or the secondary battery pack, the abnormality detecting control circuit can be two according to different conditions. One of the output terminals (o1&o2&o3) sends an enable signal to turn on both ends of D and S of one of the switching elements, causing current to flow through the heat generating component 180i (from the first inner electrode 181i to the heat generating material 188i1 to the second inner electrode) The 182i output or from the first inner electrode 181i to the heat generating material 188i1 to the second inner electrode 182i to the third inner electrode 183i to the heat generating material 188i2 to the fourth inner electrode 184i or from the first inner electrode 181i to the heat generating material 188i1 From the second inner electrode 182i to the third inner electrode 183i to the heat generating material 188i2 to the fourth inner electrode 184i to the fifth inner electrode 185i to the heat generating material 188i3 to the sixth inner electrode 186i) to the switching element The S terminal allows the current at this time to generate sufficient thermal energy as it flows through the heat generating component 180i, and conducts thermal energy to the second via the first insulating substrate 111i and the conductive layer 118 above the heat generating material 188i1. The electrode 122 achieves the purpose of melting the fusible conductor 170, thereby cutting off the power supply circuit, and is unable to continue the charging operation, thereby achieving the function of overvoltage protection. Of course, if the abnormality detecting control circuit can detect the occurrence of an overtemperature event, The same can be said The function of over temperature protection is achieved. This application circuit allows the user to be more flexible to monitor the voltage state of the energy storage device for a more complete overvoltage protection function. The same temperature protection can also be achieved.

2A is a top plan view of a composite protection element 200a according to a twelfth embodiment of the present invention. 2B is a cross-sectional view of the composite protection element 200a of FIG. 2A taken along line XX'. 2C is a cross-sectional view of the composite protection element 200a of FIG. 2A taken along line YY'. Referring to FIG. 2A, FIG. 2B and FIG. 2C simultaneously, the composite protection element 200a of the present embodiment includes a substrate 210a, a heat generating component 280a, an upper electrode 220a, and a fusible conductor 270a. In detail, the substrate 210a is a multi-layer structure including a first insulating substrate 211a, a second insulating substrate 212a and at least one conductive layer 218a (three conductive layers 218a are illustrated in FIG. 1A), and the first insulating substrate The 211a and the second insulating substrate 212a may be a single layer structure or a multilayer structure, and the thickness of the first insulating substrate 211a is smaller than the thickness of the second insulating substrate 212a. The material of the substrate 210a includes a ceramic material and a low temperature. Ceramics (LTCC), glass ceramics, glass, glass, alumina, aluminum nitride, zirconia, tantalum nitride, boron nitride, calcium borosilicate, soda lime, aluminosilicate, lead borax and A composite of one or a combination of organic binders and the like. The material of the conductive layer 218a includes a composite of one of or a combination of gold, silver, copper, platinum, and the like. Further, a material for the printed circuit board may be selected to include a composition of one of FR4, FR5, a glass epoxy substrate, a phenol substrate, or the like, or a combination thereof. The upper electrode 220a is disposed on the substrate 210a, and includes a first upper electrode 221a, a second upper electrode 222a, and a heat collecting electrode 225a. The heat collecting electrode 225a is disposed between the first upper electrode 221a and the second upper electrode 222a. The upper electrode 220a may be a single layer or a multi-layer structure, and the material of each layer includes copper, tin, lead, iron, nickel, aluminum, titanium, platinum, tungsten, zinc, lanthanum, cobalt, palladium, silver, gold, platinum. An alloy of one or a combination of carbonyl iron, nickel carbonyl, cobalt carbonyl, or the like. The heat generating component 280a is disposed in the substrate 210a, and includes a heat generating material 288a and a first inner electrode 281a and a second inner electrode 282a. The first inner electrode 281a is electrically connected to one end of the heat generating material 288a, and the second inner electrode 282a is electrically connected to the other end of the heat generating material 288a, and the first inner electrode 281a is electrically connected to the heat collecting electrode 225a via the conductive layer 218a. It is particularly worth mentioning that the thinner or smaller the thickness H2, H2 of the first insulating substrate 211a between the heat collecting electrode 225a and the heat generating material 288a, the smaller the thermal resistance, the heat generating material 288a The heat generated is transmitted to the collector electrode 225a faster. In this embodiment, the heat generating material 288a is made of one of ruthenium dioxide (RuO ₂ ), ruthenium oxide, copper, palladium, platinum, platinum, titanium, carbon black adhesive, nickel copper alloy, water glass or the like. In some of the compositions, the power that the heat generating material 288a can withstand or the heat energy that can be generated is related to its own resistance. The impedance of the heat generating material 288a can be selected from different material formulations or formula ratios or the length and cut of the heat generating material 288a. The area (width and thickness) is determined. The first inner electrode 281a and the second inner electrode 282a may be one or more layers of materials including copper, tin, lead, iron, nickel, aluminum, titanium, platinum, tungsten, zinc, lanthanum, cobalt, palladium, silver, gold. An alloy of one or a combination of carbonyl iron, nickel carbonyl, cobalt carbonyl, or the like. The fusible conductor 270a is disposed on the first upper electrode 221a, the heat collecting electrode 225a, and the second upper electrode 222a, and electrically connects the first upper electrode 221a, the heat collecting electrode 225a, and the second upper electrode 222a, and the fusible conductor 270a is actually It is integral and can be divided into two parts in electrical characteristics. One is that the portion between the first upper electrode 221a and the collector electrode 225a is defined as the right fusible conductor 271a, and the other is the second upper electrode 222a. A portion between the collector electrode 225a and the collector electrode 225a is defined as a left fusible conductor 272a. The fusible conductor 270a may be a single layer or a multi-layer structure. If the fusible conductor 270a is a multi-layer structure, the multi-layer structure may be a cladding type or a layered type (the description and the first embodiment may be The description of the multi-layer structure of the fuse conductor is similar, and will not be described herein again, and the melting temperatures of the adjacent layers may be different (similar to the description of the fusible conductor 170 in the first embodiment, and will not be described herein). The material of this embodiment includes an alloy (or composite) in which one or a combination of gold, silver, copper, aluminum, palladium, platinum, tin, lead, indium, antimony, bismuth, or the like is combined. In addition, the material for electrically connecting the fusible conductor 270a and the upper electrode 220a in the embodiment includes one of or a part 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, and the like. The alloy is synthesized by using the material to fix the fusible conductor 270a on the first upper electrode 221a, the heat collecting electrode 225a and the second upper electrode 222a, which can be regarded as one of the methods and materials for electrical connection. However, it is not limited thereto, and any conventional welding method or fixing technique or electrical connection method may not require any electrical connection material, and electrical connection is within the scope of the present invention. 2 is an equivalent circuit diagram including the composite protection element 200a of the twelfth embodiment, wherein the symbols associated with FIGS. 2A, 2B, and 2C are labeled, and FIG. 4 is a composite using the twelfth embodiment. The application circuit diagram of the protection component 200a includes a power supply circuit, an energy storage device, an abnormality detection control circuit, a switching component, and a composite protection component 200a. The operation of the composite protection component 200 of this embodiment is described as follows: Said that the input current will be supplied from the first upper electrode 221a, the fusible conductor 270a, the second upper electrode 222a, to the energy storage device (or one end of the battery), to the charging current required by the energy storage device (or battery), The output current is supplied from the second upper electrode 222a, the fusible conductor 270a, and the first upper electrode 221a to an external circuit to supply voltage and current required for the external device. When an event of an overcurrent (or abnormal current) occurs, the fusible conductor 270a generates heat due to excessive current passing through, and when the power is larger than the specification of the fusible conductor 270a, the fusible conductor 270a is blown to reach an overcurrent. Protected features. The current specification of the fusible conductor 270a can be selected to determine the ratio of the different material formulations or formulations or the cross-sectional area (width and thickness) of the fusible conductor 270a. Another abnormal event is an overvoltage or overcharge or overtemperature event. When an overvoltage or overcharge or overtemperature event occurs, the input current does not have an abnormal condition, so the current flowing through the fusible conductor 270a does not generate enough. The thermal energy is used to blow the fusible conductor 270a. At this time, the abnormality detecting control circuit detects that an overvoltage event has occurred in the energy storage device, and provides a signal via the output terminal o1 to switch to the second inner electrode 282a of the heat generating component 280a. The component is turned on, that is, the D and S terminals of the switching element of the second internal electrode 282a of the external heat generating component 280a are switched to a low impedance or conduction state, so that a current flows through the heat generating component 280a (conducting from the heat collecting electrode 225a) The layer 218a flows through the first inner electrode 281a through the heat generating material 288a through the second inner electrode 282a) to the S terminal of the switching element. In a normal state, the second inner electrode 282a of the heat generating component 280a is externally connected to the resistance of the switching element (or The impedance) is very high, exhibiting an open state, not allowing current to flow through the heat generating component 280a to the S terminal of the switching element, and selecting the appropriate compound protection component specification (eg, heat generating component 280a) Value or power consumption, the current at this time can be generated to generate sufficient thermal energy when flowing through the heat generating component 280a, and conduct heat energy to the set via the first insulating substrate 211a and the conductive layer 218a above the heat generating material 288a. The hot electrode 225a achieves the purpose of melting the fusible conductor 270a, thereby cutting off the power supply circuit, and is unable to continue the charging operation, thereby achieving the function of overvoltage protection. Of course, if the abnormality detecting control circuit can detect the occurrence of an overtemperature event Similarly, the function of over-temperature protection can also be achieved. The equivalent circuit diagram of Figure 2 is also applicable to all other embodiments including the collector electrode 225X. The composite protection component of all other embodiments of the present invention can be applied to the application circuit illustrated in FIG. 4 as needed.

2L, the composite protection element 200a of the twelfth embodiment of the present invention further includes an arc suppression layer 229a disposed between the first upper electrode 221a and the collector electrode 225a and covered in the first a portion of the surface of the fusible conductor 270a between the upper electrode 221a and the collector electrode 225a, the second surface of which is disposed between the second upper electrode 222a and the collector electrode 225a, and is coated with the second A portion of the surface of the fusible conductor 270a between the upper electrode 222a and the collector electrode 225a. The material of the arc suppression layer 129 includes a composite composite of one or a part thereof, such as ruthenium rubber, inorganic ceramics, metal oxide, magnesium hydroxide, and water glass, and the arc suppression layer 229a is characterized by when the fusible conductor 270a is When the heat is melted and starts to be disconnected, the arc may be generated to generate high heat due to the close distance at which the opening is started, causing damage of the composite protection element 200a, so that the arc layer 229a is inhibited from covering both ends of the fusible conductor 270a. When a portion of the fusible conductor 270a between the first upper electrode 221a and the heat collecting electrode 225a starts to be blown or a portion of the fusible conductor 270a between the second upper electrode 222a and the heat collecting electrode 225a starts to be blown or at first When the fusible conductor 270a between the upper electrode 221a and the heat collecting electrode 225a and between the second upper electrode 222a and the heat collecting electrode 225a starts to be blown, respectively, the arc suppressing layer 229a on both end surfaces of the fusible conductor 270a The generation of the arc can be suppressed, and the damage of the composite protection element 200a caused by the high heat generated by the arc can be reduced.

2D is a top plan view of a composite protection element 200b according to a thirteenth embodiment of the present invention. 2E is a cross-sectional view of the composite protection element 200b of FIG. 2D taken along line Y-Y'. Referring to FIG. 2D, FIG. 2E, FIG. 2A and FIG. 2C, the composite protection component 200b of the thirteenth embodiment is similar to the composite protection component 200a of the twelfth embodiment, but the main differences are: The fusible conductor 270b in the composite protection element 200b of the thirteenth embodiment is different from the shape or shape of the fusible conductor 270a in the composite protection element 200a of the twelfth embodiment (including width and thickness), and the fusible conductor The 270b includes an intermediate wide portion 274b and a narrow portion 273b at both ends. Of course, the fusible conductor 270b is actually integral, similar to the fusible conductor 270a, and can be electrically divided into two parts, one of which is defined as the right side between the first upper electrode 221a and the collector electrode 225a. a fuse conductor 271b (not shown), and a portion between the second upper electrode 222a and the heat collecting electrode 225a is defined as a left fusible conductor 272b (not shown), and the fusible conductor 270b is disposed on The first upper electrode 221a, the heat collecting electrode 225a, and the second upper electrode 222a are electrically connected to the first upper electrode 221a, the heat collecting electrode 225a, and the second upper electrode 222a. It should be noted that the wide portion 274b in the middle of the fusible conductor 270b is disposed on the heat collecting electrode 225a, and is electrically connected to the heat collecting electrode 225a, and the narrow portions 273b at both ends of the soluble conductor 270b are respectively disposed at the first The upper electrode 221a and the second upper electrode 222a are electrically connected to the first upper electrode 221a and the second upper electrode 222a. The technical feature of the fusible conductor 270b in the composite protection element 200b of the present embodiment is that the width and thickness of the fusible conductor 270a in the composite protection element 200a of the twelfth embodiment are the same as those of the thirteenth embodiment. The narrow portion 273b of the fusible conductor 270b in the composite protection element 200b is the same, and the narrow portion 273b of the meltable conductor 270b is different from the width and thickness of the wide portion 274b, but the cross-sectional area of the cross section is the same, so that it can flow through The current of the fusible conductor 270a is the same as that of the fusible conductor 270b. Specifically, when the heat generating component 280a generates heat, the heat energy of the heat collecting electrode 225a required to blow the fusible conductor 270a may be higher than that of the desired fusible conductor 270b. The heat energy is high because the thin portion 274b of the fusible conductor 270b on the heat collecting electrode 225a of the composite protection element 200b of the thirteenth embodiment is thin, so that the heat generating assembly 280a requires only low heat energy. The wide portion 274b can be blown. In contrast, the fusible conductor 270a on the collector electrode 225a of the composite protection element 200a of the twelfth embodiment is thicker, so that the heat generating assembly 280a is required to generate higher heat. It can be blown, and it is concluded that the fusible conductor 270b in the composite protection element 200b of the thirteenth embodiment includes a middle wide portion 274b and a narrow thickness portion 273b at both ends, so that overvoltage or overcharge or over The temperature protection action is faster. Other related descriptions and descriptions are similar to those in the twelfth embodiment, and are not described herein again.

2M, the composite protection component 200b of the thirteenth embodiment of the present invention further includes an arc suppression layer 229b disposed on the first upper electrode 221a and the collector. Between the poles 225a and covering the surface of the fusible conductor 270b between the first upper electrode 221a and the collector electrode 225a, the second portion is disposed between the second upper electrode 222a and the collector electrode 225a, and is coated A portion of the surface of the fusible conductor 270b between the second upper electrode 222a and the collector electrode 225a. The material of the arc suppression layer 129 includes a composite composite of one or a part thereof, such as ruthenium rubber, inorganic ceramics, metal oxide, magnesium hydroxide, and water glass, and the arc suppression layer 229b is characterized in that the fusible conductor 270b is When the heat is melted and starts to be disconnected, the arc may be generated to generate high heat due to the close distance at which the opening is started, causing damage of the composite protection element 200b, so that the arc layer 229b is inhibited from covering both ends of the fusible conductor 270b. When a portion of the fusible conductor 270b between the first upper electrode 221a and the heat collecting electrode 225a starts to be blown or a portion of the fusible conductor 270b between the second upper electrode 222a and the heat collecting electrode 225a starts to be blown or at the first When the fusible conductor 270b between the upper electrode 221a and the heat collecting electrode 225a and between the second upper electrode 222a and the heat collecting electrode 225a starts to be blown, respectively, the arc suppressing layer 229b on both end surfaces of the fusible conductor 270b The arc can be suppressed from being generated, and the damage of the composite protection element 200b caused by the high heat generated by the arc can be reduced.

2F is a top plan view of the composite protection element 200c of the fourteenth embodiment of the present invention. Referring to FIG. 2F and FIG. 2D simultaneously, the composite protection component 200c of the fourteenth embodiment is similar to the composite protection component 200b of the thirteenth embodiment, but the main difference between the two is: the fourteenth embodiment The heat collecting electrode 225c is different from the shape of the heat collecting electrode 225a in the thirteenth embodiment. The shape of the heat collecting electrode 225c in the fourteenth embodiment is centered on a portion overlapping the soluble conductor 270b, and is divided into two opposite directions. The outer extension, the width of the outwardly extending portion from the center is wider or larger than the width of the central portion. This design has the advantage that the molten fusible conductor 270b is more easily extended outward from the center when the fusible conductor 270b is melted (liquefied). Adsorbed on the wider collector electrode 225c. Of course, the collector electrode 225c may also extend in different numbers, and the shape may be any shape, and the heat is collected. The design of the shape of the electrode 225c is within the scope of the present invention as long as it can adsorb the molten fusible conductor 270b to the collector electrode 225c more quickly.

2G is a schematic cross-sectional view of a composite protection element 200d according to a fifteenth embodiment of the present invention. Referring to FIG. 2G and FIG. 2E simultaneously, the composite protection component 200d of the fifteenth embodiment is similar to the composite protection component 200b of the thirteenth embodiment, but the main difference between the two is that the fifteenth embodiment further includes An auxiliary material 228d disposed on the fusible conductor 270b or on the fusible conductor 270b and the heat collecting electrode 225a (not shown, but referring to FIG. 2H), the protective element of the present invention is applied Preferably, the melting point or liquidus point temperature of the auxiliary material 228d is lower than the melting point or liquidus point temperature of the fusible conductor 270b. The main function of the auxiliary material 228d is the same as its material and other related descriptions, such as the description of the auxiliary material 128 or 128c in the third or fifth embodiment, and will not be described herein.

2H is a top plan view of the composite protection element 200e of the sixteenth embodiment of the present invention. 2I is a cross-sectional view of the composite protection element 200e of FIG. 2H taken along line X-X'. 2J is a cross-sectional view of the composite protection element 200e of FIG. 2H taken along line Y-Y'. Referring to FIG. 2H, FIG. 2I, FIG. 2J, FIG. 2F and FIG. 2G, the composite protection component 200e of the sixteenth embodiment is similar to the composite protection component 200d of the fifteenth embodiment, but the main difference between the two is It is that the sixteenth embodiment further includes at least one adsorption line 227e. The adsorption line 227e is disposed at one end of the heat collecting electrode 225c and extends across the wide portion 274b of the fusible conductor 270b and the auxiliary material 228e to the other end of the heat collecting electrode 225c, above the wide portion 274b of the fusible conductor 270b. The portion of the adsorption line 227e having a distance from the wide portion 274b of the fusible conductor 270b is less than 0.3 mm, preferably between 0.001 mm and 0.15 mm, and is thin between the adsorption line 227e and the fusible conductor 270b. The auxiliary material 228e is disposed between the portions 274b, and the auxiliary line 228e is disposed between the adsorption line 227e and the partial heat collecting electrode 225c. The auxiliary material 228e, the main function of the auxiliary material 228e, is the same as its material and other related descriptions, such as the description of the auxiliary material 128 or 128c or 128e in the third or fifth or eighth embodiment, and will not be described herein. The main function of the adsorption line 227e is the same as that of the material and other related descriptions as in the adsorption line 127 in the eighth embodiment, and will not be described herein.

2K is a schematic cross-sectional view showing a composite protection element 200f of the seventeenth embodiment of the present invention. Referring to FIG. 2K and FIG. 2B simultaneously, the composite protection component 200f of the seventeenth embodiment is similar to the composite protection component 200a of the twelfth embodiment, but the main difference between the two is that the composite of the seventeenth embodiment The substrate 210f in the protective element 200f is a multi-layer structure including a first insulating substrate 211, a second insulating substrate 212f, a third insulating substrate 213f, and a plurality of conductive layers 218a and 218f5, and a first insulating substrate The 211f, the second insulating substrate 212f, and the third insulating substrate 213f may be a single layer structure or a multilayer structure. The thickness of the first insulating substrate 211f and the third insulating substrate 213f are similar, and the second insulating substrate The thickness of 212f is thicker and thicker than the thickness of the first insulating substrate 211f and the third insulating substrate 213f. The thickness of the first insulating substrate 211f is less than 0.1 mm, preferably less than 0.05 mm, and the second layer is insulated. The thickness of the substrate 212f is preferably more than twice the thickness of the first insulating substrate 211f and the third insulating substrate 213f. The material of each substrate of the substrate 210f includes ceramic material, low temperature co-fired ceramic (LTCC), glass ceramic, glass, glass fiber, aluminum oxide, aluminum nitride, zirconium oxide, tantalum nitride, boron nitride, calcium borosilicate, A composition of one or a combination of soda lime, aluminosilicate, lead boric acid, and an organic binder. The materials of the conductive layers 218a and 218f5 include a combination of one of or a combination of gold, silver, copper, platinum, and the like. The heat generating component 280f includes a heat generating material 288f1, a first inner electrode 281f and a second inner electrode 282f electrically connected to the two ends of the heat generating material 288f1, a heat generating material 288f2, and a third inner end electrically connected to the heat generating material 288f2, respectively. Electrode 283f and fourth inner electrode 284f, heat generation The assembly 280f is disposed within the substrate 210f. In detail, the heat generating material 288f1 and the first inner electrode 281f and the second inner electrode 282f which are respectively electrically connected to the both ends of the heat generating material 288f1 are disposed on the third insulating substrate 213f, and the first insulating substrate 211f is covered in the third layer. The layer insulating substrate 213f, the heat generating material 288f1, the first inner electrode 281f, and the second inner electrode 282f. The heat generating material 288f2 and the third inner electrode 283f and the fourth inner electrode 284f which are respectively electrically connected to the both ends of the heat generating material 288f2 are disposed on the second insulating substrate 212f, and the third insulating substrate 213f covers the second insulating substrate 212f. The heat generating material 288f2, the third inner electrode 283f, and the fourth inner electrode 284f. The second inner electrode 282f is electrically connected to the third inner electrode 283f via the conductive layer 218f5, and the heat collecting electrode 225a is electrically connected to the first inner electrode 281f via the conductive layer 218a.

2-1 is an equivalent circuit diagram of the composite protection component 200f of the seventeenth embodiment. The main symbols in FIG. 2K are labeled. The technical features of the composite protection component 200f of the present embodiment are as follows: 2-1 and FIG. 4-1, FIG. 4-1 is an application circuit diagram of the composite protection element 100g of the ninth embodiment, wherein the equivalent circuit diagram of the composite protection element 100g of the ninth embodiment can be used. In the seventeenth embodiment, the equivalent circuit diagram of the composite protection component 200f is replaced. The application circuit diagram includes a power supply circuit, an energy storage device, an abnormality detection control circuit, a switching component, and a composite protection component 200f. The heat of the composite protection component 200f The generating component 280f provides two external electrodes or outputs that can be externally connected, one of which is the second inner electrode 282f and the other of which is the fourth inner electrode 284f. The advantage of such a design is that when an overvoltage event occurs in the energy storage device, no abnormality occurs in the current through the fusible conductor 270a, so the current flowing through the fusible conductor 270a does not generate sufficient thermal energy to blow the fusible conductor 270a. At this time, the abnormality detecting control circuit detects that an overvoltage event has occurred in the energy storage device, and provides a signal via the output terminal o1 to be connected to the switching element of the second internal electrode 282f or the fourth internal electrode 284f of the heat generating component 280f. open That is, the second inner electrode 282f or the fourth inner electrode 284f of the external heat generating component 280f is switched between the two ends of the switching element D and S in a low resistance state or a conducting state, so that a current flows through the heat generating component 280f (from The first inner electrode 281f to the heat generating material 288f1 to the second inner electrode 282f output end or from the first inner electrode 281f to the heat generating material 288f1 to the second inner electrode 282f to the third inner electrode 283f to the heat generating material 288f2 to the fourth The internal electrode 284f) is connected to the S terminal of the switching element. In a normal state, the switching element externally connected to the second internal electrode 282f or the fourth internal electrode 284f of the heat generating component 280f has a high resistance or an open state, and does not allow current to flow through the heat. The component 280f is generated to the S terminal of the switching element, and the current of the current composite protection component (for example, the resistance or power consumption of the heat generating component 280f) is selected to allow the current at this time to flow through the heat generating component 280f. A sufficient amount of thermal energy is generated to conduct heat energy to the heat collecting electrode 225a via the first insulating substrate 211f and the conductive layer 218a above the heat generating material 288f1 to fuse the fusible conductor 270a, thereby supplying power to the power source. Cut off, unable to continue charging action, reaching over-voltage protection function, of course, if the abnormality detection control circuit can detect over-temperature occurrence of an event, empathy can achieve over-temperature protection. Another application circuit, please refer to FIG. 2-1 and FIG. 4-2 at the same time. FIG. 4-2 is a second application circuit diagram of the composite protection component 100g of the ninth embodiment, wherein the composite of the ninth embodiment The equivalent circuit diagram of the protection element 100g can be replaced by the equivalent circuit diagram of the composite protection element 200f of the seventeenth embodiment. The application circuit diagram includes a power supply circuit, an energy storage device, an abnormality detection control circuit, two switching elements, and a composite circuit. The protection element 200f, Figure 4-2 is similar to Figure 4-1, but the main difference between the two is that the application circuit of Figure 4-1 has only one switching element, so the D-terminal electrical connection of the switching element can only be selected according to requirements. One of the two internal electrodes (one of which is the second internal electrode 282f and the second of which is the fourth internal electrode 284f) in the heat generating component 280f. In the application circuit of Figure 4-2, the abnormality detection control circuit includes four voltage detection inputs (d1). D2, d3, d4), can detect whether the voltage of the three batteries and the total voltage in series are abnormal in the energy storage device or the secondary battery pack? If an overvoltage event occurs in the energy storage device or the secondary battery pack, one of the two output terminals (o1&o2) of the abnormality detection control circuit may be sent to the start signal according to different conditions, so that the D and S ends of one of the switching elements are turned on. Current is caused to flow through the heat generating component 280f (from the first inner electrode 281f to the heat generating material 288f1 to the second inner electrode 282f output or from the first inner electrode 281f to the heat generating material 288f1 to the second inner electrode 282f to the third The inner electrode 283f to the heat generating material 288f2 to the fourth inner electrode 284f) to the S terminal of the switching element allows the current at this time to generate sufficient thermal energy when flowing through the heat generating component 280f, via the heat generating material 288f1. The first insulating substrate 211f and the conductive layer 218a conduct heat energy to the heat collecting electrode 225a to fuse the meltable conductor 270a, thereby cutting off the power supply circuit, failing to continue charging, and achieving overvoltage protection. It should be noted that the fusible conductor 270a in the equivalent circuit diagram of the composite protection element 200f of the present embodiment includes a right fusible conductor 271a and a left fusible conductor 272a, and the collector electrode 225a is gathered. Collecting heat and sequentially melting a portion of the right fusible conductor 271a and a portion of the left fusible conductor 272a to fuse the fusible conductor 270a, and the fusible conductor 170 in the equivalent circuit diagram of the composite protection element 100g of the ninth embodiment different. Of course, if the abnormality detection control circuit can detect the occurrence of an over-temperature event, the same function of over-temperature protection can be achieved. This application circuit allows the user to be more flexible to monitor the voltage state of the energy storage device for a more complete overvoltage protection function. The same temperature protection can also be achieved.

Although the present invention has been disclosed in the above embodiments, many of the features of the present invention have different designs for the electrodes, the different designs of the fusible conductors, the heat generating components of one or more sets of outputs, and the heat generating components are disposed within the substrate. It is within the scope of the present invention to generate the same process or the same process as the substrate, but it is not intended to limit the present invention. It is to be understood that the scope of the invention is defined by 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

111‧‧‧First insulating substrate

112‧‧‧Second insulating substrate

120‧‧‧Upper electrode

121‧‧‧First upper electrode

122‧‧‧Second upper electrode

170‧‧‧Solid conductor

180‧‧‧Heat generating components

188‧‧‧Heat-generating materials

Claims (18)

A composite protection device includes: a substrate, the substrate is a multi-layered insulating substrate; an upper electrode disposed on the substrate, including a first upper electrode and a second upper electrode; and a heat generating component disposed in the substrate, the One end of the heat generating component is electrically connected to the second upper electrode; and at least one fusible conductor is disposed on the upper electrode, one end of the fusible conductor is electrically connected to the first upper electrode, and the other end is electrically connected to the second upper electrode to form a first A current path between the upper electrode and the second upper electrode. The composite protection element of claim 1, wherein the second upper electrode comprises an outer portion, a narrow portion and a heat collecting portion, wherein the narrow portion has a smaller cross-sectional area than the outer portion and the heat collecting portion The area can reduce the influence of the external temperature on the heat collecting portion, the heat collecting portion can collect the heat generated by the heat generating component, and the external portion can be electrically connected to the external circuit. A composite protection component according to claim 1, wherein the fusible conductor may be a single layer or a multilayer structure, and the multilayer structure may be a layered structure or a cladding structure. The materials of the adjacent layers may have different melting points or liquefaction temperatures. A composite protection element according to claim 1, wherein the heat generating component comprises a heat generating material and a plurality of internal electrodes or a plurality of heat generating materials and a plurality of internal electrodes, two of each of the heat generating materials Each of the ends has an inner electrode, and an inner electrode of one of the heat generating materials is electrically connected to the second upper electrode, and the different heat generating materials are electrically connected in series to each other. A composite protective component according to claim 1, further comprising an auxiliary material disposed on the fusible conductor or disposed on the fusible conductor and the second upper electrode, and the auxiliary material is liquefied The point or liquidus point temperature is below the melting point of the fusible conductor or the liquefaction point or liquidus point temperature. A composite protection component according to claim 1 of the patent application, further comprising a An adsorption line and an auxiliary material 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 being disposed between the adsorption line and the fusible conductor And between the adsorption line and the second upper electrode, and the auxiliary material liquefaction point or liquidus point temperature is lower than the melting point or the liquefaction point or the liquidus point temperature of the fusible conductor. A composite protection element according to claim 1, further comprising an arc suppression layer disposed between the first upper electrode and the second upper electrode and coated on the first upper electrode and the second upper electrode A portion of the fusible conductor surface between. The composite protective element according to any one of claims 1 to 7, wherein the fusible conductor comprises a wide portion and a narrow portion, the wide portion is electrically connected to the second upper electrode, and is narrow The thick portion is electrically connected to the first upper electrode. A composite protection component includes: a substrate, the substrate is a multi-layered insulating substrate; and an upper electrode disposed on the substrate, comprising a first upper electrode and a collector electrode and a second upper electrode, wherein the collector electrode is disposed Between the first upper electrode and the second upper electrode; the heat generating component is disposed in the substrate, not disposed on the first insulating substrate but on the flat surface of the other insulating substrate, and one end of the heat generating component is electrically connected a heat collecting electrode; and at least one fusible conductor disposed on the upper electrode to electrically connect the first upper electrode, the heat collecting electrode and the second upper electrode to form a current path between the first upper electrode and the second upper electrode. A composite protection element according to claim 9, wherein the fusible conductor may be a single layer or a multi-layer structure, and the multi-layer structure may be a layered structure or a cladding structure. The materials of the adjacent layers may have different melting points or liquefaction temperatures. A composite protection element according to claim 9, wherein the heat generating component comprises a heat generating material and a plurality of internal electrodes or a plurality of heat generating materials and a plurality of internal electrodes, two of each of the heat generating materials Each end has an internal electrode, one of which is hot An inner electrode of the resulting material is electrically connected to the collector electrode, and the different heat generating materials are electrically connected in series to each other. A composite protection component according to claim 9 further comprising an auxiliary material, which may be disposed on the fusible conductor or on the fusible conductor and the heat collecting electrode, and the auxiliary material liquefaction point or The liquidus point temperature is lower than the melting point of the fusible conductor or the liquefaction point or liquidus point temperature. A composite protection element according to claim 9, further comprising an adsorption line and an auxiliary material disposed at one end of the heat collecting electrode and extending across the soluble conductor to the opposite end of the heat collecting electrode The auxiliary material is disposed between the adsorption line and the fusible conductor, and between the adsorption line and the collector electrode, and the liquefaction point or liquidus point temperature of the auxiliary material is lower than a melting point or a liquefaction point or a liquid point point of the fusible conductor temperature. A composite protection element according to claim 9, further comprising an arc suppression layer disposed between the first upper electrode and the collector electrode and coated on the first upper electrode and the collector electrode The portion of the fusible conductor surface is disposed between the second upper electrode and the heat collecting electrode and covers a surface of the fusible conductor between the second upper electrode and the heat collecting electrode. A composite protective element according to any one of claims 9 to 14, wherein the fusible conductor comprises a middle wide portion and a narrow portion at both ends, and the middle wide portion is electrically connected. The collecting electrode has narrow and thick portions at both ends electrically connected to the first upper electrode and the second upper electrode, respectively. A composite protection element according to claim 1 or claim 9, wherein the elements or structures included in the composite protection element can be co-fired at a low temperature in addition to the fusible conductor. The ceramic technology and the sintering process are sintered one or more times, and the sintering temperature is lower than 1100 ° C. The invention relates to a method for manufacturing a composite protection component, which comprises the steps of: mixing a slurry containing inorganic ceramic powder, glass powder and an organic binder into a slurry, and drying it by a doctor blade to form a sheet of thin film. Embryo; required for each layer of thin embryos a hole filled with a conductive material for the transfer of current and heat between the upper electrode and the lower electrode or between the inner electrode and the second upper electrode or between the inner electrode and the collector electrode; The electrode and the conductive layer or the inner electrode, the lower electrode and the conductive layer are printed on the desired thin layers of the raw embryos; and the plurality of thin green embryos are stacked in a sintering furnace and sintered at a sintering temperature below 1100 ° C to complete the inclusion. a second insulating substrate of the electrode and the conductive layer or the inner electrode, the lower electrode and the conductive layer; and printing the heat generating material on the inner electrode of the second insulating substrate by screen printing; and using a thin green embryo (already Punching) covering the heat generating material, the internal electrode, and the second insulating substrate or using screen printing to mix the first insulating substrate material (including inorganic ceramic powder, glass frit, and organic binder into a slurry) The material is printed on the heat generating material, the inner electrode and the second insulating substrate; the conductive layer and the upper electrode are printed on the first insulating substrate by screen printing; and then less than 1100 ° C in the sintering furnace. Sintering temperature After the junction is completed, a multi-layer insulating substrate including an upper electrode on the first insulating substrate and a heat generating component in the substrate is fabricated; finally, any conventional welding method or fixing technique or electrical connection method can be used. A fuse conductor is fixed to the upper electrode to form a current path between the first upper electrode and the second upper electrode. A composite protection component includes: a substrate, the substrate is a multi-layered insulating substrate; and an upper electrode disposed on the substrate, comprising a first upper electrode and a collector electrode and a second upper electrode, wherein the collector electrode is disposed Between the first upper electrode and the second upper electrode, the upper electrode may be a single-layer metal conductive layer or a multi-layer metal conductive layer; the heat generating component is disposed in the substrate, not disposed on the first insulating substrate But on the flat surface of the other layer of the insulating substrate, the heat generating component comprises at least one heat generating material and a plurality of internal electrodes, one end of the heat generating component is electrically connected to the heat collecting electrode; and at least one fusible conductor is disposed And electrically connecting the first upper electrode, the heat collecting electrode and the second upper electrode on the upper electrode to form a current path between the first upper electrode and the second upper electrode; and the substrate containing the heat generating component and the conductive layer The structure and all the electrodes on the substrate are made of low temperature co-fired ceramic technology to contain inorganic ceramic powder, glass powder and organic An insulating material such as a binder and a metal electrode material containing one of silver, copper, gold, and the like, and a heat generating material comprising a combination of yttrium oxide, lanthanum, palladium, platinum, etc., to form a multilayer substrate, once or plural times The low-temperature co-fired ceramic sintering process is sintered, and the sintering temperature is lower than 1100 ° C. Finally, the meltable conductor is fixed on the upper electrode by any conventional welding method or fixing technique or electrical connection method.