CN101989519B - Protecting component - Google Patents
Protecting component Download PDFInfo
- Publication number
- CN101989519B CN101989519B CN201010245159.1A CN201010245159A CN101989519B CN 101989519 B CN101989519 B CN 101989519B CN 201010245159 A CN201010245159 A CN 201010245159A CN 101989519 B CN101989519 B CN 101989519B
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- Prior art keywords
- pattern electrode
- metal alloy
- fusible metal
- ceramic core
- lamellar body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/12—Two or more separate fusible members in parallel
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fuses (AREA)
Abstract
The present invention provides a protecting component which realizes small size and slimness and senses the heating of a resistance heating component for reliable operation thereby improving reliability, and a protecting device with the protecting component. The protecting component (10) comprises the following components: a ceramic chip body (12); a fusible alloy fuse component (20) which is configured on a surface of the ceramic chip body (12); the resistance heating component (25) which is configured in a through hole (24); and leading-out leads (15-17) which are configured to a back surface. The heating component (25) is composed of a resistor with a preset resistance value and is in a filling state because the heating component is embedded in the through hole (24). Therefore the heat of the resistor causes the fusible alloy fuse component (20) to operate correctly and quickly through the ceramic chip body (12) with excellent heat conductivity. Particularly, the protecting component has the following practical effects: enlarged bearing power of the resistance heating component (25), effectively exerted space efficiency, and facilitated back length reduction, size reduction and slimming.
Description
Technical field
The present invention relates to a kind ofly be mounted with the miniaturization of the fusible metal alloy fuse element that can stand reflow treatment, the protection component of slimming in the ceramic chip surface that forms pattern electrode, relate in particular to resistance heating element is disposed in to the through hole of ceramic core lamellar body, leading-out terminal is located to the protection component of rear side and is used the protective device of this protection component.
Background technology
In the time the excessive heating producing because of the overcurrent of protected equipment being detected, maybe in the time sensing environment temperature abnormal overheated, the non-recovery type protection component of work, in order to realize the safety of equipment, can carry out work at the operating temperature of regulation and cut off electric loop.As an example of this protection component, the known with good grounds signal code extremely detecting that equipment is produced makes resistance heating and makes the protection component of fuse element work with this heating.In Japanese patent laid-open 07-153367 communique (patent documentation 1) and Japanese patent laid-open 08-161990 communique (patent documentation 2), following protection component and protective device are disclosed, wherein, above-mentioned protection component has adopted is located at the film resistance on ceramic substrate by the resistance of heating when abnormal, above-mentioned protective device utilizes above-mentioned protection component prevent the degradation causing because of the dendrite generating or catch fire under the pattern of overcharging of lithium ion chargeable battery on electrode surface, or more than preventing that battery is charged to assigned voltage in the time of charging.
Generally, main power source is utilized lithium ion chargeable battery or the lighium polymer rechargeable battery of the high density energy of preservation characteristics and leakproof excellence in mobile information terminal apparatus, because energy density is high, therefore, when abnormal, this energy is discharged and the possibility of the state of causing danger is high quickly.In order to prevent such overcharging with overdischarge and guarantee safety in rechargeable battery, be provided with this double protective circuit of recovery type and non-recovery type.For example, Japanese patent laid-open 10-056742 communique (patent documentation 3) discloses a kind of protective device, this protective device comprises: recovery type protective circuit, and this recovery type protective circuit is being cut off charging current in the time that cell voltage exceedes setting voltage; And the non-recovery type protective circuit of temperature fuse, this non-recovery type protective circuit is used in the time that this protective circuit is not worked because of some reason.For strip resistance temperature fuse; in Japanese Patent Laid-Open 2005-129352 communique (patent documentation 4), disclose a kind of protection component of insulated substrate glass epoxy resin being realized to low price, in Japanese Patent Laid-Open 2005-150075 communique (patent documentation 5), disclose a kind of strip resistance fuse that adopts unleaded fusible metal alloy.And Japanese Patent Laid-Open 2006-221919 communique (patent documentation 6) discloses a kind of strip resistance fuse, this strip resistance fuse is layered in heating in insulated substrate and to the insulated substrate on this resistive element fusible metal sheet is set with resistive element.
Patent documentation 1: Japanese patent laid-open 07-153367 communique
Patent documentation 2: Japanese patent laid-open 08-161990 communique
Invention document 3: Japanese patent laid-open 10-056742 communique
Patent documentation 4: Japanese Patent Laid-Open 2005-129352 communique
Patent documentation 5: Japanese Patent Laid-Open 2005-150075 communique
Patent documentation 6: Japanese Patent Laid-Open 2006-221919 communique
In recent years, follow the universal rapidly of small-sized movable PC, require to utilize surface mounting technology means and the battery pack miniaturization, the slimming that use, thereby the chip of protection component is required improving constantly.Although above-mentioned patent documentation 1, patent documentation 2 and patent documentation 6 have been mentioned the combination of the fuse element and the resistive film that use certain alloy, the first type surface direction that they are all substrate by resistive film along the horizontal direction of substrate forms.Conventionally, owing to when abnormal, this resistive film being applied to cell voltage, therefore, must be designed to have rational area to its voltage range, the size of horizontal direction be dwindled and be restricted.In addition, the strip resistance fuse shown in patent documentation 5 is that the heater element that single or two low melting point fusible metal alloy fuse elements is installed on the surface of pottery insulated substrate processed, lead-in wire and thick-film resistor be installed overleaf forms.
In this strip resistance fuse; fusible metal alloy is arranged between the electrode on substrate with dull and stereotyped paper tinsel state; be provided with in relatively large area film resistance owing to going up overleaf, therefore inevitable required erection space is large, for having very large space as the installation requirement of protection component.Therefore, not only in to the application of the mobile information apparatus that requires miniaturization, slimming etc., occur undesirable, and in assembling with manufacture existing problems.On the other hand, in the time forming membranaceous resistive element, thereby be difficult at printing ruthenium-oxide class thickener and exceeding at the temperature of 800 DEG C, to burn till in obtaining uniform thick-film resistor on characteristic surface, obtain required resistance value, therefore, the deburring adjustment of thick-film resistor becomes the operation of effort, is difficult to cost degradation.In addition, resistive film except volume is little, bear power diminishes, also cannot carry out the sintering of resistive film to organic substrate.In addition, owing to being formed at, the rear side deriving with lead-in wire is installed, therefore needs to carry out insulation processing and the protection component that meets miniaturization, slimming cannot be provided, and be difficult to realize densification and the low as much as possible back side.Therefore,, as the stable protection component in operating temperature work, be desirable to provide a kind of including manufacturing the protection component after improvement processability and using the circuitry protective device of this protection component.
Summary of the invention
Therefore; the present invention is based on above-mentioned shortcoming invention forms; be conceived to configure resistance heating element in the through hole of chip substrate; its object is, provides a kind of, after the ceramic substrate upper surface installing that forms pattern electrode can stand the fusible metal alloy fuse element of reflow treatment and handle together multiple elements, they carried out to chip is cut apart and the chip-shaped protection component that obtains miniaturization, slimming.
Another object of the present invention is to provide a kind of protective device of installing heater element and leading-out terminal is located to the protection component of rear side and the battery pack of this protection component of use etc. in the through hole of ceramic substrate.Particularly, another object of the invention described above is to provide a kind of and installs fusible metal alloy fuse element on a face of ceramic core lamellar body, on another face, electrode part or the lead-in wire of use derived in installing, and in the through hole that is formed at ceramic core lamellar body, configure the protection component after the so novel and improvement of resistance heater, and provide a kind of simplification of manufacture and high efficiency of operation of improving, realize cost degradation and miniaturization simultaneously, realize the protection component after the novel and improvement of effective utilization of raising in performance and installing space and used the protective device of this protection component.
According to the present invention, following protection component is provided, this protection component comprises: ceramic core lamellar body, this ceramic core lamellar body has multiple through holes and is embedded with resistance heating element in one therein, arranges multiple pattern electrodes on tow sides; Fusible metal alloy fuse element, this fusible metal alloy fuse element is installed between the picture on surface electrode with solder reflow soldering and a face as above-mentioned ceramic core lamellar body and is connected with surface; And lead-in wire for multiple derivation, these are derived and connect the back view pattern electrode being disposed at as another face of above-mentioned ceramic core lamellar body with going between, to between double-edged chip body pattern electrode, connect by conducting through hole or conducting half through hole, directly or by the heat conduction of ceramic material make fusible metal alloy fuse element heat up to move the heating of resistance heating element.At this, resistance heating element is the resistance filler that is disposed at a chip-resistance body in through hole or has regulation resistance value.This resistance value is that the selected of resistance material by filling in through hole adjusted.Thereby the selected fusible metal alloy that can not be refluxed processing impact of the fusible metal alloy fuse element of effects on surface side is connected with the smooth flux material of fusing and the pattern electrode of rear side of guarantee.Like this, simplified the structure of distribution., fusible metal alloy fuse element can, because reflow treatment fuses, can not affect fuse performance after reflow treatment yet.And as required, fuse element also can be made up of plural fusible metal alloy, and the temperature of the fusing of each fusible metal alloy is chosen to be to identical or different temperature.In addition, comparatively it is desirable to, derive with lead-in wire and made by flat conductor, its tabular surface is connected with the pattern electrode soldering of another face.
Particularly, in the metal and fusible metal alloy selected as the material of fuse element, for example, there are 97Bi-3Zn (255 DEG C), 99.3Bi-0.5Ag-0.2Cu (258 DEG C), 97Bi-3Ag (262 DEG C), Bi (272 DEG C), 78Zn-22Al (275 DEG C), 95Zn-5Al (382 DEG C), 54Ge-46Al (424 DEG C) etc.In addition, the proportioning of numeral alloy (% by weight).Owing to adopting the protection component of these lead-free alloys can stand 245 DEG C of above solder reflow solderings, therefore, as surface, parts are installed, can carry out in the lump soldering simultaneously with other equipment.
In addition; in order to ensure the fusing of protection component smoothness; need to be at the surface-coated solder flux of fusible metal alloy; but in order also not drip and to carry out reliably fusing from alloy surface bearing under above-mentioned reflux temperature and more than 250 DEG C operating temperatures, therefore adopt the high temperature solder flux of structure as follows.Above-mentioned solder flux adopts the Kazakhstan of adding excellent heat resistance in the solid state component that plays coating agent effect to praise 10～50 parts of the more than 100 modified hydrogenated rosin of light color level acid of colour, add therein softening point and be 5～30 parts of the Abietyl modified maleic acid resin selected in the scope of 120～190 DEG C or rosin modified phenolic resins, as 20～50 parts of the montan wax of dispersed modifier or stearmide Huo Shan Yu acid amides, as preventing 0.5～10 part of the pyrogenic silica of the thixotropic agent that heat hangs from above or organic correction pyrogenic silica, as 0.5～1 part of the diphenylamines of antioxidant or dicyclohexylamine, heating is made base material after mixing.Therein, also adding as the aliphatic hydroxyl monocarboxylic acid of 2～10 parts, the saturated straight chain amino acid of 2～10 parts of the saturated straight chain aliphatic dicarboxylic acids of the carbon number 4～12 of activating agent, carbon number 4～12, carbon number 1～6 or hydroxy-dicarboxylic acid or hydroxyl tricarboxylic acid is 2～10 parts, and it is fully mixed disperse the solid-state scolder that forms.
According to another viewpoint of the present invention, following non-recovery type protective device is disclosed, the control element that this protective device has protection component and abnormal signal is detected, wherein above-mentioned protection component comprises: ceramic core lamellar body, this ceramic core lamellar body has multiple through holes; Multiple pattern electrodes, these pattern electrodes are located at the tow sides of above-mentioned ceramic core lamellar body; Fusible metal alloy fuse element, between this fusible metal alloy fuse element and surperficial pattern electrode, soldering is connected; Resistance heating element, this resistance heating element is disposed at least one through hole in multiple through holes; Lead-in wire for multiple derivation, these are derived and use lead-in wire to be connected with the pattern electrode at the back side of ceramic core lamellar body; And electric conductor, this electric conductor be embedded in by the multiple through holes that connect between double-edged pattern electrode more than at least two in through hole, the heating of heater element moves fusible metal alloy fuse element intensification induction by the heat conduction of ceramic core lamellar body, it is characterized in that, thereby control element makes to control electric current and flows through heater element ceramic core lamellar body is heated up, and makes the fuse element work of installing in its vicinity.At this, control element is the element overcharging for preventing that the abnormality of battery pack charging and discharging control circuit is detected.
According to the present invention; a kind of novel protection component is provided; the resistance heating element of this protection component in the through hole of ceramic core lamellar body vertically configuration form, and realized the slimming of shortening the miniaturization that causes and causing because of omission resistance thickness because of the size of horizontal direction.In addition; on the ceramic core lamellar body with through hole, pattern electrode is set; can stand the fusible metal alloy fuse element of reflow treatment and arrange overleaf to derive to make to use between double-edged pattern electrode through hole conducting with electrode part or lead-in wire thereby arrange on surface; therefore; can not only easily carry out simplifying as assembling the realization of protective device; and the heat conduction by ceramic core lamellar body can make heating be passed to as early as possible fusible metal alloy fuse element, thereby makes rapidly fusible metal alloy melting can carry out reliably the regulation work of fusible metal alloy fuse element.
On the other hand; because the fusible metal alloy fuse element on protection component is selected not because reflow treatment fuses and also can not affect the such fusible metal alloy of fuse performance after reflow treatment; therefore; contribute to the problem occurring while reducing the assembling of following protective device, realize the raising of the workability causing because of the simplification of manufacture.Carry out the electrode pattern of connection-core lamellar body between positive and negative by burying underground of electric conducting material using the through hole of ceramic core lamellar body as conducting through hole, can reliably and easily carry out the distribution as protective device.Especially, because the heating of heater element is passed to fusible metal alloy fuse element by the heat conduction by ceramic core lamellar body, make the fusible metal alloy induction that heats up as early as possible, thereby the heating that therefore fusible metal alloy fuse element detects heater element responds rapidly and realizes reliably fuse performance.And, heater element is buried underground and is configured in through hole, on two faces, be connected with pattern electrode, therefore conduct good pattern electrode by heat and ceramic core lamellar body transmits resistance heating, thereby the temperature rise of fusible metal alloy fuse element can reliably and promptly be fused in melt temperature.Meanwhile, the resistance heating element in through hole can increase and bears power, realizes the low back of the body that effectively applying flexibly of space caused and miniaturization, the favourable such practical function of slimming.
Brief description of the drawings
Fig. 1 is the isometric front view of the protection component of embodiment of the present invention 1.
Fig. 2 is the stereogram corresponding to the protection component of assembling process.
Fig. 3 is the stereogram of the protection component before fuse element is installed.
Fig. 4 is the stereogram that represents the mounting structure of the protection component of embodiment 2.
Fig. 5 is the stereogram of protection component before the fuse element that represents embodiment 2 is installed.
(symbol description)
10,30 protection components
12,32 ceramic core lamellar bodies
14 caps (block)
15,16,17 derive lead-in wire
20,35 fusible metal alloy fuse elements
21,41 first pattern electrodes
22,23,42,43 second pattern electrodes
24,44 first through holes
25,45 resistance heating elements (chip-resistance)
26,27 second through holes
28,29 conducting elements
46,47 end face side electric conductor slot parts
Embodiment
According to the present invention, in order to handle together multiple protection components, preprepared pottery is to form, be also formed with respectively multiple through holes by multiple chip bodies with raw cook.The thickener that is main component in order to silver on two faces of chip body forms pattern electrode.In addition, at least one through hole of each chip body, imbed ruthenium-oxide class thickener and be provided with the resistance heater of required resistance value.Sintering work is at the temperature of 850 DEG C of left and right, to burn till about 0.5 hour, thereby produces the pottery that contains multiple chip bodies insulated substrate processed.Above-mentioned ready pottery insulated substrate processed comprises multiple ceramic core lamellar bodies with conducting through hole and resistance heater.In addition, ceramic core lamellar body comprises: be formed at the multiple pattern electrodes on two faces; The conducting through hole that the pattern electrode conducting of positive and negative two faces is connected; And imbed the through hole of resistance heater.Ceramic core lamellar body is so-called chip part namely, particularly, comprising: resistance heating element, and this resistance heating element is disposed at least one first through hole; And second through hole, this second through hole is made up of at least plural conducting through hole.By this part being installed to fuse element and deriving lead-in wire, thereby make protection component.
The backplate of pottery insulated substrate processed is assembled with and derives with lead-in wire and fuse element through reflow treatment.At this, fuse element is the fusible metal alloy material without Pb, selected can be because reflow treatment fuses and also can not affect the material of such stood backflows of fuse performance after reflow treatment, guarantee to maintain and fail safe through the performance in the handling together of backflow.Particularly, selected fuse element from following fusible metal alloy., 97Bi-3Zn (255 DEG C), 99.3Bi-0.5Ag-0.2Cu (258 DEG C), 97Bi-3Ag (262 DEG C), Bi (272 DEG C), 78Zn-22Al (275 DEG C), 95Zn-5Al (382 DEG C), 54Ge-46Al (424 DEG C).Owing to adopting the protection component of these lead-free alloys can stand 245 DEG C of above solder reflow solderings, therefore, as surface, parts are installed, can carry out in the lump soldering simultaneously with other equipment.At this, the proportioning (% by weight) of the numeral alloy of mark before each element mark, represents melt temperature in the bracket after element mark.The fusible metal alloy choosing is made to tinfoil paper shape, and be fixed in solder reflow soldering between the pattern electrode of face side.As required, make to be located at double-edged multiple conductive pattern electrode and be insulated coating, or block a shot installing is disposed to surperficial fusible metal alloy fuse element sealing with pottery.In addition, the coverage of the sealing of block comprises surperficial pattern electrode and the fusible metal alloy of ceramic core lamellar body, and the area of its coating Area Ratio ceramic core lamellar body entirety is little.And, comparatively it is desirable to, by deriving with lead-in wire use tabular copper cash, can realize the low back of the body, slimming.
On the other hand, in order to ensure the smooth fusing of fusible metal alloy fuse, be provided with solder flux tunicle on the surface of used fusible metal alloy.Now, solder flux material needs to bear and under above-mentioned reflux temperature and the operating temperature more than 250 DEG C, also can not keep from fusible metal alloy surface coating state with flowing down, realizes fusing reliably.For this reason, adopt the high temperature solder flux of structure as follows., adopt the Kazakhstan of adding excellent heat resistance in the solid state component that plays coating agent effect to praise 10～50 parts of the more than 100 sour modified hydrogenated rosin of light color level (Japanese: light color グ レ mono-De) of colour, add therein softening point and be 5～30 parts of the Abietyl modified maleic acid resin selected in the scope of 120～190 DEG C or rosin modified phenolic resins, as 20～50 parts of the montan wax of dispersed modifier (Japanese: モ Application タ Application acid ワ Star Network ス) or stearmide Huo Shan Yu acid amides, as preventing 0.5～10 part of the pyrogenic silica of the thixotropic agent that heat hangs from above or organic correction pyrogenic silica, as 0.5～1 part of the diphenylamines of antioxidant or dicyclohexylamine, heating is made base material after mixing.Therein, also adding as the aliphatic hydroxyl monocarboxylic acid of 2～10 parts, the saturated straight chain amino acid of 2～10 parts of the saturated straight chain aliphatic dicarboxylic acids of the carbon number 4～12 of activating agent, carbon number 4～12, carbon number 1～6 or hydroxy-dicarboxylic acid or hydroxyl tricarboxylic acid is 2～10 parts, and it is fully mixed disperse the solid-state solder flux that forms.
Above-mentioned protection component formation of the present invention is used the charging and discharging control device for battery pack (Japanese: Electricity pond パ Star Network is with charging and discharging the imperial device of Electricity system) of protection component to be used as the protective device of other execution modes., above-mentioned protective device is in the time that control element detects extremely and signal code is energized to above-mentioned heater element, thereby makes resistance heating make the non-recovery type protective circuit of the low melting point fusible metal alloy fusing of fusible metal alloy fuse element.In addition, protection component used herein is made up of following part: ceramic core lamellar body, and this ceramic core lamellar body has the multiple pattern electrodes and the conducting through hole that is connected two pattern electrodes on face on above-mentioned two faces; And the heater element of fusible metal alloy fuse element and shaped like chips resistive element, wherein, the soldering of above-mentioned fusible metal alloy fuse element is on the pattern electrode of face side that is disposed at above-mentioned ceramic core lamellar body, and above-mentioned heater element is configured in through hole.
Embodiment 1
Below, with reference to accompanying drawing, the first embodiment of the present invention is elaborated.Axial lead type protection component 10 of the present invention, as its face side represented with stereogram in Fig. 1, comprising: ceramic core lamellar body 12; The cap 14 of packaging part, cap 14 protection of this packaging part is installed in the resistance heating element in fusible metal alloy fuse element and the through hole of mounting related components of ceramic core lamellar body 12 face side etc.; And derive lead-in wire 15～17, these are derived lead-in wire 15～17 and are connected with the pattern electrode of rear side.At this, on two faces of ceramic core lamellar body 12, be formed with pattern electrode, in face side, fusible metal alloy fuse element is installed, side is provided with overleaf derives with lead-in wire, in chip body through hole, resistance heating element is installed.Fig. 2 represents the stereogram under the state before the cap 14 of packaging part is installed, on the pattern electrode 21～23 of being located at ceramic core lamellar body 12, dispose solder flux is coated on to surperficial fusible metal alloy fuse element 20, its two ends and pattern electrode 22,23 solderings, intermediate point is connected with resistance heating element (not shown) via pattern electrode 21.The stereogram of the state before the fusible metal alloy fuse element 20 of Fig. 3 presentation graphs 2 is installed.The face side central authorities of ceramic core lamellar body 12 are formed with the first pattern electrode 21, are formed with a pair of the second pattern electrode 22,23 in the first pattern electrode 21 both sides, are formed with respectively the first through hole 24 and a pair of the second through hole 26,27 on each pattern electrode position.Wherein, through hole 24 is buried underground and is disposed resistance heating element 25, and through hole 26,27 is buried underground and disposed conducting element 28,29.In addition, though not shown, three pattern electrodes of rear side that are formed at said chip body 12 are corresponding with face side pattern electrode 21～23, and are electrically connected with resistance heating element 25 and conducting element 28,29.
On the other hand, be installed on lead-in wire 15～17th for the derivation of rear side, flat copper wire, and with pattern electrode soldering.The raw cook stage of ceramic core lamellar body 12 before sintering processes made the shape of regulation, and implements the processing of required through hole.After sintering processes, implement the pattern printing of conductive pattern, and in through hole, implement the filling processing of resistive element.Ceramic core lamellar body forms pattern electrode and the resistive element of multiple regulations in the lump simultaneously, after the processing treatment process of regulation using their separatings as independent parts.As long as ceramic core lamellar body maintains good insulating properties, can be also the insulating material outside aluminium oxide, on each face of above-mentioned insulated substrate, be formed with pattern electrode with the shape of regulation.For example, in predetermined locational two through holes, be provided with electric conductor, resistive element be clipped in a through hole, and be electrically connected with the pattern electrode of two faces.Note at this, except the resistive element being disposed in through hole need to not have living space in face side, be conducive to miniaturization, slimming, compared with existing film resistance body, can obtain very large volume.Therefore, bear power except increasing, can be omitted in needed sintering in membranaceous resistive element, in addition, can not produce wound.Can there is not operational accident and unfavorable condition, can realize long term stabilization.
Embodiment 2
Other embodiment of the present invention is the chip-shaped protection component 30 shown in the stereogram of Fig. 4.Fig. 4 has represented to remove the stereogram of the face side after over cap, and protection component 30 is fusible metal alloy fuse element 35 to be installed on the surface of ceramic core lamellar body 32 form, and is the structure that can serve as the operation of surface mounted type chip parts.Said chip type protection component 30 is formed with the first pattern electrode 41 in central authorities respectively on two faces of ceramic core lamellar body 32; and form the second pattern electrode 42,43 in end face side, thereby rear side pattern electrode is installed on printed base plate carrying out soldering between printed base plate and pattern electrode like this.Fig. 5 is the stereogram that represents the state before over cap and fusible metal alloy fuse element are installed.The lip-deep pattern electrode group that has represented to be located at ceramic core lamellar body 32 in Fig. 5, is formed with the first pattern electrode 41 in central authorities, is formed with a pair of the second pattern electrode 42,43 in end face side., electric conductor slot part 46,47 corresponding with the first pattern electrode 41 with the first through hole 44 is formed at ceramic core lamellar body 32 with the corresponding form of the substrate end-face of the second pattern electrode 42,43 respectively.At this, in first through hole 44 corresponding with central pattern electrode 41 shown in Fig. 5, be embedded with the resistance heating element 45 of the resistance value that is adjusted to regulation.In addition, be formed with electric conductor slot part 46,47 in the end face side of the electrode pattern 42,43 of ceramic core lamellar body 32 with the form that the pattern electrode conducting of two faces is connected.The first pattern electrode 41 of substrate center is also formed on two faces, is electrically connected to each other by the resistance heating element 45 of being located at through hole 44.
In production process till before fusible metal alloy fuse element, resistance heating element and over cap are installed in installing, above-mentioned ceramic core lamellar body is processed to processing under multiple state connected to each other., multiple ceramic core lamellar body by handling together manufacture, in the operation before completing, carries out separating under alumina material ceramic chip connecting state for independent.Process processing by multiple ceramic chips are made to connecting state, thereby except reducing the error between product, can realize characteristic between product and the homogenizing of performance.Therefore,, after conducting element being embedded in to the through hole that is formed at multiple chip association, carrying out separation cut at through hole and carry out the formation of electric conductor slot part 46,47 on ceramic core lamellar body end face.As shown in Figure 4, in the face side of ceramic core lamellar body 32, two ends and the pattern electrode soldering of the fusible metal alloy fuse element 35 that is coated with solder flux in low melting point fusible metal alloy are configured.Equally, be electrically connected with rear side pattern electrode through the electric conductor slot part 46,47 of two end faces, also the pattern electrode soldering of leading-out terminal and these rear side can be arranged, by above-mentioned leading-out terminal and surface, wiring substrate is installed and is formed electric loop.As required, also can utilize ceramic cap or insulation-coated material to seal to form packaging part to fusible metal alloy fuse element 35.At this, configure with ceramic core lamellar body 32 one and keep thermal state owing to being embedded in the heater element 43 of the resistive element in the through hole 44 of ceramic core lamellar body 32, therefore, the heating of resistive element, directly from ceramic chip body heat transferring to fusible metal alloy fuse element, can be carried out work at the operating temperature of regulation rapidly and correctly by this.At this, each inscape forms processing with as far as possible little and thin form.For example, the diameter phi of through hole is formed as for example 0.2mm.In addition, adjusting resistance material or clear size of opening etc. for example, so that the resistance value of heater element is required resistance value, 1～100 Ω between the double-edged electrode pattern of through hole 44.
In the above-described embodiments, on the tow sides of ceramic core lamellar body, three pattern electrodes are connected to each other by through hole separately, bury underground and dispose resistance heating element therein in a through hole.Thereby three pattern electrodes of face side are built bridge and are had fusible metal alloy fuse element and three pattern electrode weldings with bridge shape, by this, become the doublet type fusible metal alloy fuse element of the first fusable links part and the second fusable links part with low-melting alloy.With the fusable links part of the low-melting alloy of each pattern electrode welding on be coated with solder flux, thereby become fusible metal alloy fuse element.As required, use than the slightly little insulating ceramics lid of ceramic core lamellar body containing pattern electrode and seal covering.In addition, the low-melting alloy of fusible metal alloy fuse element can be also monotype fusable links, but can make the operating temperature of fusable links each other identical or different in the situation that of doublet type fusable links.In the time of the doublet type of different operating temperatures, comparatively it is desirable to, temperature difference is controlled in the deviation range of operating temperature.
Derivation lead-in wire and leading-out terminal are installed on three pattern electrodes of rear side that are formed at ceramic core lamellar body to be come and the protected equipment connection of using.Heater element is disposed in the first through hole, is connected with the first pattern electrode.For protection component, for example, specified DC is that 32V, 10A, operating temperature are that 135 DEG C, heating resistor are 50 Ω, about the overall dimension of finished product, ceramic chip main body is made minimum.In addition, square ceramic chip body 12 is that thickness is the aluminum oxide substrate of 0.4mm, thereby the aequum that significantly reduces aluminium oxide ceramics because of miniaturization can obtain advantage economic on cost, and in the time implementing the formation of pattern electrode with silk screen printing, owing to being little substrate, therefore also can obtain just completing with one-step print the economic effect in the manufactures such as multiple printing processing simultaneously.And, be the tabular plating Sn copper cash that 0.7～1.0mm, thickness are 0.2～0.4mm because lead member 15～17 is used width, therefore, the thickness that is conducive to main part reduces, thereby contributes to slimming.
Embodiment 3
The mounting structure of protection component of the present invention can be applicable to the additives for overcharge protection circuit of rechargeable battery.Be installed between the active elements such as the MOSFET of main printed base plate and install in the mode that ceramic cap side is embedded down.The protection component of a face that seals ceramic core lamellar body with the packaging part of ceramic cap described above can approach the temperature-sensitive portion of this part and active element to install.In addition, by utilizing the interelement gap space of circuit parts that protection component is installed, favourable to miniaturization, slimming, and can be applicable to use the compact mobile with in information communication device of this protective circuit.In addition, in the time using plural resistance heater, be disposed at by parallel connection in the through hole of ceramic core lamellar body, thereby thereby can realize the uniform heat transmission of fusible metal alloy fuse element is realized to precision raising.And, due to the miniaturization of parts, therefore, thereby installing the space that can realize between the control element that effectively utilizes protective circuit and contributing to the densification texts of protective device entirety.
This disclosed execution mode and embodiment a little on for illustrate, be not considered to be the present invention made to restriction.Scope of the present invention is not the content of above-mentioned explanation but represents by the scope of claim, comprises all changes in the meaning identical with the scope of claim and scope.
Claims (5)
1. a protection component, it comprises:
Ceramic core lamellar body, this ceramic core lamellar body has multiple through holes;
Multiple pattern electrodes, these pattern electrodes are located on the tow sides of described ceramic core lamellar body;
Fusible metal alloy fuse element, select, and soldering is connected between the pattern electrode of a face of described ceramic core lamellar body in the material that this fusible metal alloy fuse element is affected by reflow treatment never;
Resistance heating element, this resistance heating element is configured at least one through hole in multiple through holes;
Lead-in wire for multiple derivation, these derive the pattern electrode that connects another face that is disposed at ceramic core lamellar body with lead-in wire; And
Electric conductor, this electric conductor is embedded in the through hole of at least two in the multiple through holes that connect between double-edged pattern electrode,
Directly or by ceramic core lamellar body, the heating heat of resistance heating element is conducted to fusible metal alloy fuse element, the induction that heats up of fusible metal alloy fuse element is moved,
Described fusible metal alloy fuse element is made up of the fusible part of at least two, and the temperature of each fusible part fusing is selected to identical or different temperature, it is characterized in that,
The first pattern electrode soldering of the face side central authorities of the intermediate point of described fusible metal alloy fuse element and described ceramic core lamellar body is buried underground and is disposed described resistance heating element in the first through hole that is formed at described the first pattern electrode position,
Described resistance heating element be by resistance material selected come the chip-resistance of adjusting resistance value, and described resistance heating element is connected with the leading-out terminal of the described fusible metal alloy fuse element of the face side of described ceramic core lamellar body and the described pattern electrode of rear side.
2. protection component as claimed in claim 1, is characterized in that, described leading-out terminal is connected with the flat lead wire conductor extending in the same direction, and connects along the soldering of wiring substrate tabular surface.
3. a non-recovery type protective device, at the tow sides of insulating ceramics chip body, single central pattern electrode is set, and in the both sides of this central authorities' pattern electrode, a pair of pattern electrode is set, the protection component of low melting point fusible metal alloy is set between a pair of pattern electrode of face side, the described central pattern electrode soldering of the face side of the intermediate point of described protection component and described insulating ceramics chip body, on a pair of pattern electrode of side, leading-out terminal is set overleaf, the resistive element of heater element is embedded in the through hole forming on the correspondence position of double-edged described central pattern electrode, thereby be electrically connected with the central pattern electrode of two faces, and make to conduct between described a pair of pattern electrode with end face side electric conductor slot part, in face side, the approximate central part of fusible metal alloy fuse element is electrically connected with center through hole, the described central pattern electrode of side arranges the second leading-out terminal overleaf, described heater element heats because of electric current, respond to therewith described fusible metal alloy fusing, thereby cut-out electric loop.
4. protective device as claimed in claim 3, is characterized in that, produces the electric current that flows through described heater element, for preventing the electric discharge of overcharging in the time that control element detects battery pack charging and discharging control circuit abnormal.
5. protective device as claimed in claim 3, is characterized in that, the conducting of end face side electric conductor slot part is to form on the superficies conductor of end edge portion of being located at through hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-178918 | 2009-07-31 | ||
| JP2009178918A JP5305523B2 (en) | 2009-07-31 | 2009-07-31 | Protective element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101989519A CN101989519A (en) | 2011-03-23 |
| CN101989519B true CN101989519B (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010245159.1A Active CN101989519B (en) | 2009-07-31 | 2010-07-28 | Protecting component |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5305523B2 (en) |
| KR (1) | KR20110053896A (en) |
| CN (1) | CN101989519B (en) |
| TW (1) | TWI485739B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101266822B1 (en) | 2011-09-07 | 2013-05-23 | (주)엠에스테크비젼 | Platlike repeatable fuse |
| CN102522263A (en) * | 2011-12-31 | 2012-06-27 | 上海长园维安电子线路保护有限公司 | Temperature fuse capable of being soldered through reflow |
| JP5896412B2 (en) | 2012-05-17 | 2016-03-30 | エヌイーシー ショット コンポーネンツ株式会社 | Fuse element for protection element and circuit protection element using the same |
| JP5807969B2 (en) * | 2012-11-07 | 2015-11-10 | エヌイーシー ショット コンポーネンツ株式会社 | Flux composition for protective element and circuit protective element using the same |
| CN103236380B (en) * | 2013-04-10 | 2015-07-01 | 南京萨特科技发展有限公司 | Over-current over-voltage protective element and manufacture method thereof |
| JP6151550B2 (en) * | 2013-04-25 | 2017-06-21 | デクセリアルズ株式会社 | Protective element |
| TWI680482B (en) * | 2014-01-15 | 2019-12-21 | 日商迪睿合股份有限公司 | Protection element |
| JP6480742B2 (en) * | 2015-02-05 | 2019-03-13 | 内橋エステック株式会社 | Protective element |
| CN106410762A (en) * | 2015-07-28 | 2017-02-15 | 有量科技股份有限公司 | Battery charging protection system and active fusing type protection device |
| JP6708387B2 (en) * | 2015-10-07 | 2020-06-10 | デクセリアルズ株式会社 | Switch element, electronic parts, battery system |
| JP2019021650A (en) * | 2018-11-13 | 2019-02-07 | 内橋エステック株式会社 | Protection element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732545A (en) * | 2002-12-27 | 2006-02-08 | 索尼化学株式会社 | Protection element |
| JP2006221919A (en) * | 2005-02-09 | 2006-08-24 | Uchihashi Estec Co Ltd | Fuse with substrate type resistor and battery pack |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH117877A (en) * | 1997-06-14 | 1999-01-12 | Uchihashi Estec Co Ltd | Alloy temperature fuse |
| JP2002033035A (en) * | 2000-07-18 | 2002-01-31 | Nec Schott Components Corp | Protection element |
| JP2003217416A (en) * | 2002-01-25 | 2003-07-31 | Nec Schott Components Corp | Temperature fuse and protective device mounted with the same |
-
2009
- 2009-07-31 JP JP2009178918A patent/JP5305523B2/en active Active
-
2010
- 2010-07-01 TW TW099121642A patent/TWI485739B/en active
- 2010-07-22 KR KR1020100070764A patent/KR20110053896A/en not_active Application Discontinuation
- 2010-07-28 CN CN201010245159.1A patent/CN101989519B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732545A (en) * | 2002-12-27 | 2006-02-08 | 索尼化学株式会社 | Protection element |
| JP2006221919A (en) * | 2005-02-09 | 2006-08-24 | Uchihashi Estec Co Ltd | Fuse with substrate type resistor and battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110053896A (en) | 2011-05-24 |
| TW201110180A (en) | 2011-03-16 |
| JP2011034755A (en) | 2011-02-17 |
| CN101989519A (en) | 2011-03-23 |
| JP5305523B2 (en) | 2013-10-02 |
| TWI485739B (en) | 2015-05-21 |
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Address after: Shiga Patentee after: Schott (Japan) Corporation Address before: Shiga Patentee before: NEC Schott Components Corp. |