CN106960772A

CN106960772A - Protection element and chargeable and dischargeable battery pack

Info

Publication number: CN106960772A
Application number: CN201611231714.9A
Authority: CN
Inventors: 陈葆萱; 陈莎莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-11
Filing date: 2016-12-28
Publication date: 2017-07-18
Anticipated expiration: 2036-12-28
Also published as: TW201725599A; CN106960772B; TWI657473B

Abstract

The invention provides a protection element and a chargeable and dischargeable battery pack. The protection element comprises an insulating outer shell, a plurality of terminal electrodes, a first fusible conductor and at least one heating element. The plurality of terminal electrodes include a first terminal electrode and a second terminal electrode. The plurality of terminal electrodes penetrate through the insulating outer shell and are supported by the insulating outer shell. The first end of each end electrode is arranged outside the insulating shell. The second end of each end electrode is arranged in the insulating outer shell. A gap is formed between the second end of the second end electrode and the base of the insulating shell. The first fusible conductor is disposed within the insulative outer housing. The first fusible conductor has both ends electrically connected to the first terminal electrode and the second terminal electrode, respectively, to form a current path between the first terminal electrode and the second terminal electrode. The at least one heating element is arranged below the second end of the second end electrode or above the overlapping area of the first fusible conductor and the second end electrode. The first end of the at least one heating body is electrically connected with the second end of the second end electrode.

Description

Protection element with can charge-discharge battery bag

Technical field

The present invention relates to one kind can charge-discharge battery bag and its protection element, and more particularly to one kind possesses overcurrent, mistake Voltage or over-temperature protection function and can bear high charge-discharge electric current can charge-discharge battery bag and its protection element.

Background technology

3C Product or electronics technology industry are more and more important, especially in action and the industry of communicator.Running gear is said Study carefully be how energy-conservation because the power supply of running gear relies on battery system.Battery technology now on running gear by Limited to space, so the size of battery is also considerably limited, in the case of size constancy, battery capacity need to be lifted, It is the developing direction of battery industry now.The security of battery is even more the subject under discussion that everybody pays much attention to, especially running gear Screen constantly becomes big, and resolution ratio is constantly lifted, the complexity of camera function and the electricity needs of flash lamp etc., running gear Stand-by time and use time become all manufacturers must facing challenges.So the raising of battery capacity reforms into everybody It is required that major subjects.But the raising of the capacity because of battery, the security of battery is just into more without avoidable subject under discussion.Battery Practical application on, most make us taking notice of is exactly over-charging of battery and battery short circuit (or impact of high current), in general, is exactly The event of overcurrent and overvoltage.The element at least with minimum how is designed in limited space, and reaches overcurrent and mistake One of the protection of voltage, the target pursued as part manufacturer.

The electrode of prior art protection element is mostly configured on substrate, and future is applied to the related operating current of motor all Suitable height, even above 50A, the electrode and substrate being arranged on substrate can not all bear the circulation of such high current, even Electrode and substrate all can be melted and ruptured.

General SMD over-current protecting element, is printed on insulated substrate using metal materials such as silver, copper mostly Come up as electrode or termination electrode, be not have when the product design of application uses less electric current such as below 15A electric current Any problem.But, when its operating current of the product of application or rated current scope are between 30A~100A, with printing side Electrode or termination electrode made by formula, can not just bear such high operating current or rated current, because the metal of printing Thickness has its certain limitation with density, so that the internal resistance of electrode in itself is difficult to drop to very low value, more likely causes electrode Because melting or disconnecting by big operating current or rated current.

Separately, operating current or rated current between fusible conductor is to that can bear 30A~100A, its sectional area (thickness With width) it must all increase, it is separated into two-part distance after fusible conductor fusing, it is also necessary to there are enough spaces, it is ensured that The insulaion resistance of fusible conductor is in safe range after disconnection.

Separately, operating current or rated current between fusible conductor is to that can bear 30A~100A, its sectional area (thickness With width) must all increase, in addition, fusible conductor one side heated be also come this fusible conductor that fuses can be with, but its The speed of fusing is slow.

Aforesaid plurality of termination electrode in order to be able to bear high rated current, can use high density and high conductivity metal foil or Sheet metal or bonding jumper etc., as the material of the multiple termination electrode, but, foregoing fusible conductor also mostly uses metal material, Engage or be electrically connected or very low contact resistance well so how to make foregoing termination electrode have with foregoing fusible conductor, It is a considerable technology, commonly known method is to weld foregoing termination electrode by solder fusible to lead with foregoing Body, although feasible, but solder is typically paste and heat can be melted, and how to ensure foregoing termination electrode and foregoing fusible conductor Between have enough solders to weld be considerable technology.For example：If in foregoing termination electrode or foregoing fusible conductor Side pressure, then solder overflow may go out foregoing termination electrode between foregoing fusible conductor because of external force, cause solder It is not enough and form failure welding.Separately, if not pressed in a side of foregoing termination electrode or foregoing fusible conductor, it is possible to foregoing Termination electrode or foregoing fusible conductor spacing between the two it is excessive, do not completely attach to solder, cause missing solder.More than Problem is all the possible cause for causing protection element bad.

The content of the invention

In consideration of it, the present invention provide a kind of protection element with can charge-discharge battery bag, use described in solution prior art The problem of.

The protection element of the present invention includes insulation crust body, multiple termination electrodes, the first fusible conductor and at least one heating Body.The multiple termination electrode includes the first termination electrode and the second termination electrode.The multiple termination electrode through insulation crust body and Supported by insulation crust body.It is external and described many that the first end of each in the multiple termination electrode is configured at insulation crust The second end of each in individual termination electrode is configured in insulation crust body.Second end of the second termination electrode and insulation crust body There is the second gap between base.First fusible conductor is configured in insulation crust body.The two ends of first fusible conductor are electric respectively Gas connects the first termination electrode and the second termination electrode, to form current path between the first termination electrode and the second termination electrode.At least One heater is configured at the lower section at the second end of the second termination electrode or is configured at both the first fusible conductor and the second termination electrode weight The top in folded region.The first end of an at least heater is electrically connected the second end of the second termination electrode.

In one embodiment of this invention, the second end of the first termination electrode by insulation crust body base or protuberance branch Support.Either, above-mentioned protection element also includes flux material, and wherein flux material configuration is fusible in insulation crust body and first Between conductor.

In one embodiment of this invention, above-mentioned protection element also includes multiple bossy bodies and solder.The protrusion Body is arranged respectively between at least one in the first fusible conductor and above-mentioned multiple termination electrodes.Solder configuration fusible is led first Between at least one in body and above-mentioned multiple termination electrodes.

In one embodiment of this invention, have between the second end of the first above-mentioned termination electrode and the base of insulation crust body There is the first gap, and the first gap is more than or less than above-mentioned second gap.The middle section of first fusible conductor has slope Change.

In one embodiment of this invention, above-mentioned multiple termination electrodes also include three-end electrode.The one of three-end electrode End electrical connection is to the first fusible conductor, and to cause form multiple current paths between the multiple termination electrode.

In one embodiment of this invention, above-mentioned protection element also includes the second fusible conductor.Second fusible conductor is matched somebody with somebody Put in insulation crust body, and one end of the second fusible conductor is electrically connected the second termination electrode.The multiple termination electrode also includes Three-end electrode.One end of three-end electrode is electrically connected to the other end of the second fusible conductor, is caused in the multiple end electricity Multiple current paths are formed between pole.

In one embodiment of this invention, above-mentioned multiple termination electrodes also include the 4th termination electrode.4th termination electrode electrically connects Connect the second end of an above-mentioned at least heater.After an at least heater heating power, this heat at least produced by a heater At least one fused in the first fusible conductor and the second fusible conductor.

In one embodiment of this invention, the second above-mentioned termination electrode couples the second surface of the first fusible conductor.It is above-mentioned Protection element also include ennation electrode.One end of ennation electrode couples the second end of the second termination electrode, and ennation electricity The other end of pole couples the first surface of the first fusible conductor.

In one embodiment of this invention, above-mentioned multiple termination electrodes also include the 4th termination electrode.Above-mentioned protection element is also Including insulated substrate.The configuration of an above-mentioned at least heater is on insulated substrate or configures in insulated substrate, wherein it is above-mentioned at least Second end of one heater is electrically connected the 4th termination electrode.

In one embodiment of this invention, above-mentioned multiple termination electrodes also include the 4th termination electrode.Above-mentioned protection element is also Including the first heater electrode and the second heater electrode.First heater electrode configuration is in the second termination electrode and at least one hair Between the first end of hot body, the first end of the heater of wherein at least one is electrically connected the second end electricity via the first heater electrode Pole.Second heater electrode configuration is between the second end of an at least heater and the 4th termination electrode, the heater of wherein at least one The second end be electrically connected the 4th termination electrode via the second heater electrode.Second termination electrode, the first heater electrode, at least One heater, the second heater electrode and the 4th termination electrode formation sandwich structure.

In one embodiment of this invention, above-mentioned protection element also includes the 5th termination electrode and an at least passage.Extremely Few passage configuration has the between the first fusible conductor and the 5th termination electrode, and between an at least passage and the 5th termination electrode Three gaps.When an at least heater adstante febre, the first fusible conductor of melting flows at least a passage and third space, causes the It is short-circuit between two termination electrodes and the 5th termination electrode, to form another current path between the second termination electrode and the 5th termination electrode.

In one embodiment of this invention, the second above-mentioned termination electrode couples the second surface of the first fusible conductor.It is above-mentioned Multiple termination electrodes also include the 4th termination electrode.An above-mentioned at least heater includes the first heater and the second heater.First Heater is coupled between the first surface of the first fusible conductor and the 4th termination electrode.Second heater is coupled in the second termination electrode Between the 4th termination electrode.When an at least heater adstante febre, the first heater is carried out to the first surface of the first fusible conductor Heat, and the second heater is heated via the second termination electrode to the second surface of the first fusible conductor.

In one embodiment of this invention, above-mentioned protection element also includes the first insulated substrate and the second insulation base Plate.First heater is configured on the first insulated substrate or in the first insulated substrate.The configuration of second heater is in the second insulation base On plate or in the second insulated substrate.

The present invention can charge-discharge battery bag include at least a cell device group and above-mentioned protection element.Protection element It is connected in series to form an at least charging and discharging currents path with an at least cell device group.When flowing through the discharge and recharge in protection element When electric current exceedes load current value and occurs over-current condition, protection element is disconnected in an above-mentioned at least charging and discharging currents path At least one.

In one embodiment of this invention, it is above-mentioned can charge-discharge battery bag also include detection control circuit and discharge and recharge Control circuit.Voltage or temperature of the detection control circuit to detect an at least cell device group.Charge-discharge control circuit is used to According to the state and the species of external device of the voltage detected by detection control circuit, and judge whether to pass from external device Defeated charging current transmits discharge current to external device to an at least cell device group or from an at least cell device group.

The present invention can charge-discharge battery bag include at least a cell device group, above-mentioned protection element, on-off circuit with And detection control circuit.Protection element is connected in series to form an at least charging and discharging currents path with an at least cell device group. On-off circuit is couple to the second end of an above-mentioned at least heater.Detection control circuit is to detect an at least cell device group Voltage or temperature, the state for determining on-off circuit according to detected voltage or temperature.If an at least cell device group Voltage or temperature are normal, then on-off circuit is maintained at off state.If the voltage or temperature anomaly of an at least cell device group, Then on-off circuit is switched to conducting state, causes protection element to disconnect at least charge and discharge between an at least cell device group At least one in electric current path.When flow through the charging and discharging currents in protection element more than load current value and occur overcurrent During situation, protection element disconnects at least one in an at least charging and discharging currents path.

The present invention can charge-discharge battery bag include multiple cell device groups, multiple above-mentioned protection elements, multiple switch Circuit and detection control circuit.In the multiple cell device group each include at least one can discharge and recharge battery member Part.The multiple protection element concatenates to form charging and discharging currents path with the multiple cell device group.The multiple switch Each in circuit is couple to the 4th termination electrode of one of them in the multiple protection element.Detection control circuit is used to The voltage or temperature of the multiple cell device group are detected, the multiple switch is determined according to detected voltage or temperature The state of each in circuit.If the voltage or temperature of the cell device group are normal, the multiple on-off circuit is protected Hold in off state.If the voltage of any one or temperature anomaly in the multiple cell device group, corresponding to abnormal electricity The on-off circuit of pond element group is switched to conducting state, the protection element caused corresponding to abnormal cell device group disconnect with Charging and discharging currents path between abnormal cell device group, and charging and discharging currents path is switched into the multiple cell device Remaining normal cell device group in group.Exceed volume when flowing through the charging and discharging currents of any one in the multiple protection element When determining current value and occurring over-current condition, the protection element for occurring over-current condition disconnects charging and discharging currents path.

For the features described above and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings It is described in detail below.

Brief description of the drawings

Figure 1A is a kind of equivalent circuit diagram of protection element of the embodiment of the present invention；

Figure 1B is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 1 C are the schematic top plan view of Figure 1B protection element；

Fig. 1 D are the region A of Figure 1B protection element close-up schematic view；

Fig. 1 E are the diagrammatic cross-section after the first fusible conductor fusing of Figure 1B protection element；

Fig. 1 F are a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 2A is a kind of schematic top plan view of protection element of the embodiment of the present invention；

Fig. 2 B are a kind of schematic top plan view of protection element of the embodiment of the present invention；

Fig. 3 A are a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 3 B are the region B of Fig. 3 A protection element close-up schematic view；

Fig. 3 C are a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 3 D are a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 3 E are a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 3 F are a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 3 G are the diagrammatic cross-section after the first fusible conductor fusing of Fig. 3 A protection element；

Fig. 4 A are a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 4 B are the schematic top plan view of Fig. 4 A protection element；

Fig. 4 C are the diagrammatic cross-section after the first fusible conductor fusing of Fig. 4 A protection element；

Fig. 5 is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Fig. 6 for the embodiment of the present invention it is a kind of can charge-discharge battery bag circuit diagram；

Fig. 7 for the embodiment of the present invention it is a kind of can charge-discharge battery bag circuit diagram；

Fig. 8 for the embodiment of the present invention it is a kind of can charge-discharge battery bag circuit diagram；

Fig. 9 for the embodiment of the present invention it is a kind of can charge-discharge battery bag circuit diagram；

Figure 10 A are a kind of equivalent circuit diagram of protection element of the embodiment of the present invention；

Figure 10 B are a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Figure 10 C are the diagrammatic cross-section after the fusible conductor fusing of Figure 10 B protection element；

Figure 10 D are another diagrammatic cross-section after the fusible conductor fusing of Figure 10 B protection element；

Figure 10 E are the another diagrammatic cross-section after the fusible conductor fusing of Figure 10 B protection element；

Figure 11 is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；

Figure 12 for the embodiment of the present invention it is a kind of can charge-discharge battery bag circuit diagram.

Symbol description：

1：Charging device or electronic installation

10：Insulated substrate

10a：Upper surface

10b：Lower surface

11：First termination electrode

11c、21c：Bossy body

12：Three-end electrode

16：Insulating barrier

19：Insulation crust body

19a：Insulation crust body matrix

19b：Covered on insulation crust body

19c：Protuberance

19n：Base

2：Charge-discharge control circuit

21：Second termination electrode

21x：Ennation electrode

31：4th termination electrode

32：5th termination electrode

4、4a、4b：Cell device group

4-1、4-2、4-3、4-4：Cell device

5、5a、5b：Detecting control circuit

588、588a、588b、588c、588d：Can charge-discharge battery bag

6、6a、6b：On-off circuit

7：Heater

71：First heater

72：Second heater

7a、7b：Heater electrode

8：First fusible conductor

8-1：First surface

8-2：Second surface

81：Second fusible conductor

8a：Low melting point conductor layer

8b：High-melting-point conductor layer

885、885a、885b、886、886a、887、888、888a、888b、888c、889、889a、889b、889c、 889d：Protection element

9：Solder

91：Flux material

A、B：Region

F1：Current-limiting circuit

G：Ground terminal

GP1：First gap

GP2：Second gap

GP3：Gap

Ic1、Id1、Id2、I7：Electric current

S：Switch

T：Passage

Embodiment

To enable the feature and technology contents that are further understood that the present invention, following related embodiment is referred to, and match somebody with somebody Institute's accompanying drawings are closed to be described in detail below.In addition, all possible parts, use the member of identical label in drawings and the embodiments Part/component represents same or like part.In addition, it is illustrated that be to show in a schematic way, the ratio and reality of each size are had not Same situation, should consider the following description in light of actual conditions and voluntarily judge.Embodiment is described as follows：

【Protection element 888,888a】

Figure 1A is shown as a kind of equivalent circuit diagram of protection element 888 of first embodiment of the invention, and Figure 1B is shown as this A kind of diagrammatic cross-section of protection element 888 of invention first embodiment, and Fig. 1 C are shown as the one of first embodiment of the invention Plant the schematic top plan view of protection element 888.Figure 1A, Figure 1B and Fig. 1 C are please also refer to, the protection element 888 of the present embodiment is wrapped Include：Insulation crust body 19, two termination electrodes, the first fusible conductor 8 and flux material 91.Insulation crust body 19 is outer comprising insulation Housing base 19a on insulation crust body with covering 19b.Insulation crust body matrix 19a has two protuberance 19c.Insulation crust body Upper lid 19b has hollow protuberance 19d.

Above-mentioned two termination electrodes include the first termination electrode 11 and the second termination electrode 21.Above-mentioned two termination electrodes (i.e. first end Electrode 11 and the second termination electrode 21) run through insulation crust body 19 and supported by insulation crust body 19.Each termination electrode (i.e. first Termination electrode 11, the second termination electrode 21) wherein one end (first end) configuration (exposed) in outside insulation crust body 19, the other end (the Two ends) configuration (float) is in insulation crust body 19 or extends in insulation crust body 19.One of them of two protuberance 19c The first termination electrode of support section 11 is can be used to, and two protuberance 19c other in which can be used to the end of support section second electricity Pole 21.For further, there is gap between the second end of the first termination electrode 11 and the base 19n of insulation crust body 19, and Also there is gap, thus between second end of the second termination electrode 21 and the base 19n of insulation crust body 19, it is possible to decrease end electricity Pole (the first termination electrode 11 or the second termination electrode 21) is influenceed by other side's temperature each other with edge shell body 19.Each protrusion Portion 19c benefit is the support strength at the second end that can lift each termination electrode.In addition, due to the first termination electrode 11 with Second termination electrode 21 is not printed on insulation crust body 19, and designer can adjust first according to practical application or design requirement The thickness and density of the termination electrode 21 of termination electrode 11 and second, to reduce the internal resistance of the first termination electrode 11 and the second termination electrode 21.Such as This one, produce high temperature when can avoid the high current from flowing through the first termination electrode 11 and the second termination electrode 21 and make the first termination electrode 11 with Second termination electrode 21 is melted.All termination electrodes of the present invention can all be realized using similar to by the way of described above.Need Bright is that the insulation crust body matrix 19a of the present embodiment also can be without two protuberance 19c, but by above-mentioned first termination electrode 11 and second termination electrode 21 the second end by insulation crust body matrix 19a or insulation crust body matrix 19a base 19n support, Either, only there is a protuberance 19c to support the first termination electrode 11 and the second the second end of one of them of termination electrode 21, this Whether all protection elements of invention need protuberance 19c to come the aforesaid plurality of termination electrode of reinforcement (the first termination electrode 11 and the second end Electrode 21) the second end support force, all can on demand and freely configure.

First fusible conductor 8 is configured in insulation crust body 19.First fusible conductor 8 can have low melting point conductor layer 8a with High-melting-point conductor layer 8b, wherein low melting point conductor layer 8a and high-melting-point conductor layer 8b fusing point are differed.Certainly, first fusible lead Body 8 also can only include the metal level (low melting point conductor layer 8a or high-melting-point conductor layer 8b) of single fusing point.First fusible conductor 8 Two ends are electrically connected the first termination electrode 11 and the second termination electrode 21 respectively, between the first termination electrode 11 and the second termination electrode 21 Form current path (the electric current road row that electric current Ic1 and electric current Id1 are flowed through as shown in Figure 1A).Flux material 91 is configured hollow Protuberance 19d between the first fusible conductor 8.

Specifically, the two ends of the first fusible conductor 8 are electrically connected the first termination electrode 11 and the second end electricity respectively Pole 21, and the method being typically electrically connected is：Fusible led between the first fusible conductor 8 and the first termination electrode 11 and first Solder 9 is inserted between the termination electrode 21 of body 8 and second, after hot blast reflow, the purpose of electrical connection is reached.Figure is refer to below 1D, Fig. 1 D are the region A of the protection element 888 shown by Figure 1B close-up schematic view.The present embodiment is especially in first end On the termination electrode 21 of electrode 11 and second, each three bossy body 11c and 21c (but the invention is not restricted to this) are made respectively, and Solder 9 is inserted between one fusible conductor 8, bossy body 11c, the first termination electrode 11, and in the first fusible conductor 8, bossy body 21c Solder 9 is inserted between the second termination electrode 21.When carrying out the processing procedure of hot blast reflow, it can apply on the first fusible conductor 8 Weight or external force, multiple bossy body 11c and 21c, therefore first are had by oneself due to each on the first termination electrode 11 and the second termination electrode 21 Fixed distance can be maintained between the termination electrode 11 of fusible conductor 8 and first or the second termination electrode 21.Consequently, it is possible to which solder 9 can To be filled in really between the first fusible conductor 8 and the first termination electrode 11 or the second termination electrode 21, solder 9 will not be because by external force Effect and overflow goes out, therefore reflow can be avoided bad or the bad situation of electrical connection occurs.

【Insulation crust body, protuberance, hollow protuberance】

The material of insulation crust body 19 (including protuberance 19c and hollow protuberance 19d) can be good using heat resistance Engineering plastics or using polyphenylene sulfide made by the material of principal component.

【Termination electrode and bossy body】

The material of all termination electrode of the present invention and bossy body include using in gold, silver, copper, palladium, platinum etc. it is any as The combination of main composition or part thereof is used as the sheet or the metal of strip made by the material of principal component.Separately, it is exposed at insulation The surface of part termination electrode outside shell body 19 can plate one or more layers less oxidizable or relatively stable metal material such as： Nickel, tin, gold etc..Bossy body 11c and 21c can also mould termination electrode 11 is made with 12 punching presses.

【Fusible conductor】

The material of low melting point conductor layer 8a in first fusible conductor 8 is included has lead or without lead metal by principal component of tin The material of high-melting-point conductor layer 8b in alloy, the first fusible conductor 8 is included with the part such as silver, copper, tin, bismuth, indium, zinc, aluminium group Into alloy.All fusible conductors of the present invention are all suitable for above-mentioned explanation.

【Solder 9】

The material of solder 9 is included has lead or lead-free composition by principal component of tin.All solders of the present invention are all suitable for Above-mentioned explanation.

【Flux material 91】

Flux material 91 is characterized in the fusing point or liquidus point that its fusing point or liquidus point are less than the first fusible conductor 8, its material Material includes one of tin, silver, copper, rosin resin, surfactant, activator, softening agent, organic solvent etc. or part thereof group The compound of conjunction, it is main to act as preventing fusible conductor (such as：First fusible conductor 8), electrode (such as：Second termination electrode 21) Surface oxidation, and when flux material 91 and fusible conductor (such as：First fusible conductor 8) it is heated when, flux material 91 can be than can Molten conductor is (such as：First fusible conductor 8) early melt or early liquefaction, contribute to fusible conductor (such as：First fusible conductor 8) it is molten Melt, the wettability (Wetting) and absorption affinity of electrode surface can also be lifted, allow the fusible conductor melted later rapidly Diffusion is attached to electrode (such as：Second termination electrode 21) on.All flux materials of the present invention are all suitable for above-mentioned explanation.

【The action specification of protection element 888】

When the electric current less than load current value flows through the first fusible conductor 8 (for example：Electric current Ic1 flows from the first termination electrode 11 Enter, then flowed out through the first fusible conductor 8 from the second termination electrode 21；Either, electric current Id1 is flowed into from the second termination electrode 21, then Flowed out through the first fusible conductor 8 from the first termination electrode 11) when, protection element 888 will not be acted, and maintain protection element 888 Reset condition.When the electric current (electric current Ic1 or electric current Id1) higher than load current value flows through the first fusible conductor 8, first is fusible Conductor 8 can generate heat, and cause the flux material 91 in protection element 888 first to liquefy or gasify and remove the table of the first fusible conductor 8 Oxide layer on face, then, the low melting point conductor layer 8a in the first fusible conductor 8 first can be melted or liquefied, and then, high-melting-point is led Body layer 8b meltings, last first fusible conductor 8 fuses completely, wherein the fusing position of the first fusible conductor 8 is located at first end electricity Middle section (refer to shown by Fig. 1 E) between the termination electrode 12 of pole 11 and second.

Specifically, the surface of the first fusible conductor 8 can with the time increase, and produce oxide layer, this oxidation Layer can increase melting or the fusing time of the first fusible conductor 8, and flux material 91 then assists in removing the table of the first fusible conductor 8 Oxide layer on face, can shorten melting or the fusing time of the first fusible conductor 8.Separately, the fusing point of the first fusible conductor 8 is lower, Then the time of the protection act of protection element 888 is shorter, but protection element 888 all may be used in assembling processing procedure or in the processing procedure of client Energy can be by hot blast reflow oven, so high-melting-point conductor layer 8b fusing point necessarily be greater than the maximum temperature in back welding process, ability Ensure that the first fusible conductor 8 will not be assembled in processing procedure to fuse.Low melting point conductor layer 8a fusing point is less than high-melting-point conductor layer 8b's Fusing point, it helps shorten the time of the first fusible conductor 8 fusing.

Separately, the protection element 888 of the present embodiment also may not include：Hollow protuberance 19d, flux material 91, protuberance 19c and multiple bossy body 11c and 21c etc., and the defencive function or effect of protection element 888 are not interfered with, designer can With according to different actual demands (such as：The length of the size of insulation crust body 19, the thickness of the first fusible conductor 8 and termination electrode The design such as degree, cost considers) in structure to decide whether to add other protection elements of protection element 888 or the present invention, Reach and preferably combine.Certainly, optimal combination is hollow protuberance 19d, flux material 91, protuberance 19c and multiple Bossy body 11c and 21c etc., in the structure for being included in protection element 888, can so lift the stabilization of the structure of protection element 888 Degree.

【Variation】

Fig. 1 F are shown as a kind of protection element 888a of second embodiment of the invention diagrammatic cross-section.It please also refer to figure 1A and Fig. 1 F, the protection element 888a of the present embodiment include：Insulation crust body 19, two termination electrodes and the first fusible conductor 8. Insulation crust body 19 is comprising insulation crust body matrix 19a with covering 19b on insulation crust body.Insulation crust body matrix 19a has two Individual protuberance 19c.Above-mentioned two termination electrodes include the first termination electrode 11 and the second termination electrode 21.This two termination electrode (i.e. first Termination electrode 11 and the second termination electrode 21) run through insulation crust body 19 and supported by insulation crust body 19, each termination electrode (first Termination electrode 11, the second termination electrode 21) wherein one end configuration (exposed) it is external in insulation crust, the other end configures (float) in exhausted Edge shell body 19 is interior or extends in insulation crust body 19.Above-mentioned two protuberance 19c one of support section first end Electrode 11, above-mentioned two protuberance 19c another second termination electrode of support section 21, and the height of the first termination electrode 11 are higher than Second termination electrode 21 (height that may be designed as the first termination electrode 11 certainly is less than the second termination electrode 21).For further, There is the first clearance G P1, and the second termination electrode 21 between second end of the first termination electrode 11 and the base 19n of insulation crust body 19 The second end and insulation crust body 19 base 19n between have the second clearance G P2, and the first clearance G P1 be more than the second gap GP2 (may be designed as the first clearance G P1 less than the second clearance G P2) certainly.

First fusible conductor 8 is configured in insulation crust body 19.The two ends of first fusible conductor 8 are electrically connected first respectively The termination electrode 21 of termination electrode 11 and second, it is (such as electric to form current path between the first termination electrode 11 and the second termination electrode 21 The current path that stream Ic1, electric current Id1 are flowed through.

It please also refer to Figure 1B similar with the protection element 888a and Figure 1B of Fig. 1 F, Fig. 1 F embodiments protection element 888, It is in place of the two Main Differences only：The height of first termination electrode 11 of Fig. 1 F embodiments is higher than the height of the second termination electrode 21 (i.e. the first clearance G P1 be more than the second clearance G P2), therefore the height at the two ends of the first fusible conductor 8 has a drop, and first fusible The intermediate region of conductor 8 has the change of a slope, and the time that this height fall contributes to the first fusible conductor 8 to fuse shortens again Some.Separately, the protection element 888a of Fig. 1 F embodiments is without the hollow protuberance 19d and flux material 91 shown in Figure 1B.Figure The protection element 888a of 1F embodiments running can join the related description of above-mentioned Figure 1B protection element 888, will not be repeated here.

【Has protection element 888b, 888c of multi-current-path】

Fig. 2A is shown as a kind of protection element 888b of third embodiment of the invention schematic top plan view.It please also refer to figure 2A and Fig. 1 C, the protection element 888b and Fig. 1 C of the present embodiment protection element 888 is similar, only both Main Differences be in In：The protection element 888b of the present embodiment also includes three-end electrode 12.One end electrical connection first of three-end electrode 12 can Central area (the variation of molten conductor 8：One end of three-end electrode 12 can be also electrically connected between the first termination electrode 11 and second Any region of the first fusible conductor 8 between termination electrode 21), consequently, it is possible to the first termination electrode 11, the second termination electrode 21 and Multiple current paths can be formed between three-end electrode 12.

Fig. 2 B are shown as a kind of protection element 888c of fourth embodiment of the invention schematic top plan view.Fig. 6 is shown as this Inventive embodiments it is a kind of can charge-discharge battery bag 588 circuit diagram, wherein, can charge-discharge battery bag 588 include the present embodiment Protection element 888c equivalent circuit diagram.It please also refer to Fig. 2 B, Fig. 1 C and Fig. 6, the protection element 888c of the present embodiment It is similar to Fig. 1 C protection element 888, be in place of the two Main Differences only：The protection element 888c of the present embodiment is also comprising the Two fusible conductors 81 and three-end electrode 12.Second fusible conductor 81 is configured in insulation crust body 19.Second fusible conductor 81 One end electrical connection three-end electrode 12, the other end of the second fusible conductor 81 is electrically connected the second termination electrode 21.First end Two current path (such as electric currents shown in Fig. 6 can be formed between electrode 11, the second termination electrode 21 and three-end electrode 12 The current path that Ic1 and electric current Id2 are flowed through)；Either, the first termination electrode 11, the second termination electrode 21 and the 3rd end electricity Current path (such as the electric current Ic1 and electricity shown in Fig. 6 of at least two different rated current can be formed between the termination electrode of pole 12 The current path that stream Id2 is flowed through).

Three-end electrode 12 is supported through insulation crust body 19 and by insulation crust body 19.Wherein the one of three-end electrode 12 Hold (first end) configuration (exposed) in outside insulation crust body 19, the other end (the second end) configures (float) in insulation crust body 19 Or extend in insulation crust body 19.For further, the second end of three-end electrode 12 and the base of insulation crust body 19 There is gap, thus, it is possible to decrease high current is produced when flowing through three-end electrode 12 between (the base 19n that refer to Figure 1B) Raw temperature rises and influences the temperature of insulation crust body 19.Second end of the three-end electrode 12 of certain the present embodiment also can be direct (i.e. very close to each other) is supported by the base of insulation crust body 19.In addition, because three-end electrode 12 is not printed on insulation On shell body 19, designer can adjust the thickness and density of three-end electrode 12 according to practical application or design requirement, to drop The internal resistance of low three-end electrode 12.Produce high temperature consequently, it is possible to which high current can be avoided to flow through three-end electrode 12 and make the 3rd end Electrode 12 is melted.

【Protection element 889,889a, 889b, 889c, 889d】

Fig. 7 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery bag 588a circuit diagram, its comprising the present invention The equivalent circuit diagram of protection element 889,889a, 889b, 889c, 889d.Fig. 3 A are shown as one kind of fifth embodiment of the invention The diagrammatic cross-section of protection element 889.It please also refer to Fig. 3 A, Figure 1B and Fig. 7, the protection element 889 and figure of the present embodiment 1B protection element 888 is similar, is in place of the two Main Differences only：The protection element 889 of the present embodiment is also included：Insulate base Plate 10, the 4th termination electrode 31 (as shown in fig. 7, the structure of the 4th termination electrode 31 is referred to Fig. 4 B of explanation later), heater 7th, insulating barrier 16 and flux material 91.

Insulated substrate 10 can be supported by the protuberance 19c of insulation crust body 19 and (may be designed as certainly by insulation crust The base of body 19 is supported).Heater 7 is configured on the upper surface 10a of insulated substrate 10, and is configured at the second termination electrode 21 The lower section at the second end.Insulating barrier 16 configurable (or cladding) is on heater 7.Two ends (first end and the second end) of heater 7 Heater electrode 7a and 7b (as shown in Figure 7) can be electrically connected respectively.Heater electrode 7a is configured on the insulating substrate 10, and is matched somebody with somebody Put between the first end of insulating barrier 16, the second termination electrode 21 and heater 7, the first end of heater 7 can be via heater electricity Pole 7a is electrically connected the second termination electrode 21.Heater electrode 7b is configured on the insulating substrate 10, and is configured the second of heater 7 (referred to Fig. 4 B of explanation later) between end and the 4th termination electrode 31, the second end of heater 7 can be via heater electrode 7b is electrically connected the 4th termination electrode 31.Separately, the second end of second termination electrode 21 of the present embodiment can also not need or not have Protuberance 19c carrys out reinforcing support or produces gap with base, carrys out reinforcing support by heater 7 or produces gap, also can reach Same effect.

Flux material 91 is configurable on the surface of the first fusible conductor 8.Specifically, flux material 91 can also match somebody with somebody Put on the second termination electrode 21 (Fig. 3 A are not shown).When the adstante febre of heater 7, flux material 91 contributes to the first fusible conductor 8 melting and contribute to the first fusible conductor 8 being melted to adsorb on the second termination electrode 21.

Fig. 3 C are shown as a kind of protection element 889a of sixth embodiment of the invention diagrammatic cross-section.It please also refer to figure 3C, Fig. 3 A and Fig. 7, the protection element 889a and Fig. 3 A of the present embodiment protection element 889 are similar, only the two Main Differences it Be in：The protection element 889a of the present embodiment heater 7 is configured at (class between heater electrode 7a and heater electrode 7b Like sandwich structure).For further, heater electrode 7a configurations the second termination electrode 21 and heater 7 first end it Between.7 first end of heater can be electrically connected the second termination electrode 21 via heater electrode 7a.Heater electrode 7b is configured Between the second end of heater 7 and the 4th termination electrode 31, the second end of heater 7 can be electric via the second heater electrode 7b Gas connects the 4th termination electrode 31.4th termination electrode 31 is supported by the protuberance 19c of insulation crust body 19 and (can certainly be not required to Want the protuberance 19c of insulation crust body 19).Specifically, the protection element 889a of the present embodiment need not be using figure Insulated substrate 10 and insulating barrier 16 shown in 3A.

Fig. 3 D are shown as a kind of protection element 889b of seventh embodiment of the invention diagrammatic cross-section.It please also refer to figure 3D, Fig. 3 A and Fig. 7, the protection element 889b and Fig. 3 A of the present embodiment protection element 889 are similar, only the two Main Differences it Be in：The protection element 889b of the present embodiment heater 7 is configured in insulated substrate 10.For further, heater Electrode 7a is configurable between the second termination electrode 21 and insulated substrate 10, and wherein the first end of heater 7 can be via insulated substrate Electrode or conductive through hole (not shown) and heater electrode 7a at least the one of 10 and be electrically connected the second termination electrode 21.Hot body Electrode 7b is configurable between the second end of heater 7 and the 4th termination electrode 31, and the second end of wherein heater 7 can be via insulation Electrode or conductive through hole (not shown) and heater electrode 7b at least the one of substrate 10 and be electrically connected the 4th termination electrode 31. Specifically be：The protection element 889b of the present embodiment does not need the insulating barrier 16 shown in Fig. 3 A.

Fig. 3 E are shown as a kind of protection element 889c of eighth embodiment of the invention diagrammatic cross-section.It please also refer to figure 3E, Fig. 3 A and Fig. 7, the protection element 889c and Fig. 3 A of the present embodiment protection element 889 are similar, only the two Main Differences it Be in：The protection element 889c of the present embodiment heater 7 is configured at the lower surface 10b (second surface) of insulated substrate 10 On.For further, upper surface 10a (first surface) of the hot body electrode 7a configurations in the second termination electrode 21 and insulated substrate 10 Between, wherein first surface 10a and second surface 10b are relative to each other.The first end of heater 7 can be via insulated substrate 10 extremely Lack electrode or conductive through hole (not shown) and heater electrode 7a in one and be electrically connected the second termination electrode 21.Heater electrode 7b is configured between the second end of heater 7 and the 4th termination electrode 31, and wherein the second end of heater 7 can be via heater electrode 7b and be electrically connected the 4th termination electrode 31.Specifically be the present embodiment protection element 889c do not need Fig. 3 A shown in Insulating barrier 16.

Fig. 3 F are shown as a kind of protection element 889d of ninth embodiment of the invention diagrammatic cross-section.It please also refer to figure 3F, Fig. 3 A and Fig. 7, the protection element 889d and Fig. 3 A of the present embodiment protection element 889 are similar, only the two Main Differences it Be in：The protection element 889d of the present embodiment further includes ennation electrode 21x.Ennation electrode 21x one end coupling second Termination electrode 21, the ennation electrode 21x other end couples the upper surface (first surface) of the first fusible conductor 8.Ennation electrode 21x technical characteristic is：When the adstante febre of heater 7, the heat energy that heater 7 can be produced via ennation electrode 21x rapidly The upper surface of the first fusible conductor 8 is transferred to, the upper surface of the first fusible conductor 8 is extended body electrode 21x and heats, and first The lower surface (second surface) of fusible conductor 8 is then heated by the second termination electrode 21 and (led because the second termination electrode 21 coupling first is fusible The lower surface of body 8), consequently, it is possible to the upper surface of the first fusible conductor 8 and lower surface can be heated, fusible led with shortening first The time that body 8 is blown.It is noted that the protection element 889d of Fig. 3 F embodiments ennation electrode 21x can also be answered In protection element 889a, 889b, 889c shown in Fig. 3 C, Fig. 3 D and Fig. 3 E.

Specifically, the first end of the heater 7 in Fig. 3 A, Fig. 3 C, Fig. 3 D, Fig. 3 E and Fig. 3 F is via heating Body electrode 7a is electrically connected the second termination electrode 21, and general electrical connection methods are：In heater electrode 7a and the second termination electrode Solder 9 is inserted between 21, after hot blast reflow, the purpose of electrical connection is reached.Fig. 3 B are refer to, Fig. 3 B are protection element 889 Shown region B close-up schematic view, the present embodiment especially on the second termination electrode 21 or heater electrode 7a with Between second termination electrode 21, make three bossy body 21c (but being not limited to three), and heater electrode 7a, bossy body 21c with Between second termination electrode 21, solder 9 is inserted., can be on the second termination electrode 21 or first in the processing procedure through hot blast reflow Apply weight or external force on fusible conductor 8, due to there are multiple bossy body 21c on the second termination electrode 21, so heater electrode 7a Fixed distance can be maintained between the second termination electrode 21, solder 9 can be filled in heater electrode 7a and the second end really It between electrode 21, overflow will not go out because of external force, cause the bad situation of the bad of reflow or electrical connection to occur, so may be used Ensure that there is enough solders 9 between heater electrode 7a and the second termination electrode 21, it is ensured that the quality of welding and good electricity Gas connection performance.Separately, it is worth mentioning at this point that, have in all embodiments in the present invention comprising the 4th termination electrode 31 and heater electricity Pole 7b embodiment, mode and structure that its 4th termination electrode 31 is electrically connected with heater electrode 7b, is also suitable for above-mentioned Heater electrode 7a is electrically connected the mode and structure of the second termination electrode 21 electrical connection, and later explanation is repeated no more.

【Insulated substrate 10】

Specifically, the structure that it can be single layer structure or multilayer that insulated substrate 10, which is,.The material category of insulated substrate 10 Organic system substrate or glass epoxy substrate can be included (such as：FR4 or FR5) or inorganic system's substrate or ceramic substrate are (such as：Ltcc substrate Or HTCC substrates) etc., it is preferred that ceramic substrate or LTCC (LTCC) substrate, the material of substrate include inorganic ceramic Material, LTCC (LTCC), glass ceramics, glass dust, glass, epoxy resin, aluminum oxide, aluminium nitride, zirconium oxide, nitrogen One of SiClx, boron nitride, calcium borosilicate, soda lime, aluminosilicate, lead borosilicic acid and organic binder etc. or part thereof The synthetic or compound of combination.After LTCC (LTCC) substrate is the insulated substrate storehouse by multilayer, it is calcined Or burnt altogether with other components in insulated substrate.

【Heater 7 and heater electrode 7a, 7b】

Heater 7 is the of a relatively high element of resistance value (compared to the first fusible conductor 8), and with electric current by will Send out thermal property, its material include ruthenic oxide (RuO2), ruthenium-oxide, ruthenium, copper, palladium, platinum, titanium carbide, tungsten carbide, platinum, molybdenum, One of tungsten, carbon black, organic bond or inorganic bonding agent etc. or which part composition.The work(that heater 7 can bear Rate or the heat energy that can be generated resistance value with itself or impedance value are relevant.On the impedance value of heater 7, designer can be with Selection unlike material formula or the ratio of formula or the length of heater 7 determines with sectional area (width and thickness), and can be by By the mode of screen painting, the material of heater 7 is mixed into the slurry of pasty state, then printed on the insulating substrate 10 or absolutely In edge substrate 10, calcined or burnt altogether.

Heater electrode 7a, 7b can be single-layer metal or multi-layer metal structure, the material of its each layer include copper, tin, lead, One of iron, nickel, aluminium, titanium, platinum, tungsten, zinc, iridium, cobalt, palladium, silver, gold, carbonyl iron, carbonyl nickel, carbonyl cobalt etc. or part thereof group The alloy of synthesis.In an embodiment of the present invention, can by screen painting mode, heater electrode 7a, 7b material are mixed The slurry of pasty state is synthesized, is then imprinted on the upper surface 10a of insulated substrate 10, wherein, heater electrode 7a optionally may be used To further extend on insulating barrier 16, or, it is imprinted in insulated substrate 10 and extends to insulated substrate 10 via through hole connection On the 10a of upper surface, or, it is imprinted on the lower surface 10b of insulated substrate 10, insulated substrate 10 is extended to via through hole connection Upper surface 10a on, finally calcined or burnt altogether.

Specifically, all heater 7 of the present invention and heater electrode 7a, 7b can by screen painting side Formula, heater 7 and heater electrode 7a, 7b material and figure is printed on the insulating substrate 10 or in insulated substrate, heater Electrode 7a, 7b can connect the surface for extending to insulated substrate 10 via through hole, to be electrically connected corresponding different termination electrodes, Related all embodiments of the invention can all use the similar practice, and being described afterwards is repeated no more.

【Insulating barrier 16】

Only just need to use (such as Fig. 3 A of insulating barrier 16 when heater 7 is configured on the upper surface 10a of insulated substrate 10 It is shown).When heater 7 configures in insulated substrate 10 (such as Fig. 3 D) or configures on the lower surface 10b of insulated substrate 10 (as schemed When 3E), avoid the need for configuring the insulating barrier 16 on the upper surface 10a of insulated substrate 10.The material of insulating barrier 16 can include ring Oxygen system, acrylic acid series, Polyester, glass or using SiO2 as the inorganic material of principal component.Insulating barrier 16 also can be by screen painting Mode, be imprinted on heater 7 and insulated substrate 10, calcined or burnt altogether.

【The action specification of protection element 889】

When the electric current Ic1 or electric current Id1 higher than load current value flow through the first fusible conductor 8, refer to Fig. 1 E and It is foregoing【The action specification of protection element 888】.

Protection element 889 described in 5th embodiment, its protection act specifically be：It refer to Fig. 3 G and figure 3B, when 7 heating power of heater, heater 7 produce heat energy can via heater electrode 7a, bossy body 21c, solder 9 with And second the conduction of termination electrode 21 with being radiated the first fusible conductor 8, the particularly part first overlapping with the second termination electrode 21 can Molten conductor 8.When the temperature of the first fusible conductor 8 of the part is accumulated to the fusing point of the first fusible conductor 8 (such as：High-melting-point is led The fusing point of body layer), first fusible conductor of part 8 starts melting, and starts to expand adsorption area, and making the first of partial melting can Molten conductor 8 disconnects with the first fusible conductor 8 not melted, the fusing of the first fusible conductor 8 is completed, while being also disconnected first Current path between the termination electrode 21 of termination electrode 11 and second.

【The protection element 885 of the other recording function of tool】

Fig. 4 A are shown as a kind of diagrammatic cross-section of protection element 885 of tenth embodiment of the invention.Fig. 4 B are shown as this Invent a kind of schematic top plan view of protection element 885 of the tenth embodiment.One kind that Fig. 9 is shown as third embodiment of the invention can Charge-discharge battery bag 588c circuit diagram, wherein, can charge-discharge battery bag 588c comprising the present invention protection element 885 (protect Protection element 885a, 885b) equivalent circuit diagram.It please also refer to Fig. 4 A, Fig. 4 B, Fig. 3 A and Fig. 9, the present embodiment protection element 885 is similar to Fig. 3 A protection element 889, is in place of the two Main Differences only：The protection element 885 of the present embodiment is also wrapped Include：5th termination electrode 32, passage T and flux material 91.Passage T configurations the first fusible conductor 8 and the 5th termination electrode 32 it Between, and with clearance G P3 (third space) between passage T and the 5th termination electrode 32.Heater electrode 7a is extended in passage T. Flux material 91 is configured on the 5th termination electrode 32 and configured in passage T.Specifically, the 5th termination electrode 32 with The distance between heater electrode 7a or flux material 91 in passage T it is nearer better, the problem of must considering proof voltage certainly. Separately, flux material 91 of the configuration in passage T can also should not, the first fusible conductor of part 8 of melting still can because capillary with again Power is acted on, and is attracted on the 5th termination electrode 32, does not interfere with the defencive function of protection element 885.Certainly, it is preferred that If there is flux material 91 to configure in passage T, the heater electrode 7a in passage T can be wet so that first be melted Fusible conductor 8 can rapidly move and shorten the fusing time of the first fusible conductor 8.

【The action specification of protection element 885】

When the electric current Ic1 or Id1 higher than load current value flow through the first fusible conductor 8, Fig. 1 E are refer to and foregoing 【The action specification of protection element 888】.

Specifically, the present embodiment protection element 885 the first fusible conductor 8 and the 5th termination electrode 32 it Between be configured with three passage T (but the invention is not restricted to this), passage T preferably extends on the thickness direction of insulated substrate 10 Three through holes, and heater 7, the termination electrode 21 of insulating barrier 16 and second also have corresponding through hole, formed first Passage T (certainly, a passage T or through hole can also) between the termination electrode 32 of fusible conductor 8 and the 5th, passage T quantity The more, then when 7 heating power of heater, the first fusible conductor of part 8 being melted more easily is inhaled because of capillarity Lead in passage T, consequently only that the first fusible conductor 8 that less part is melted can be deposited in the surface of the second termination electrode, and The first fusible conductor 8 being melted, which falls to the 5th termination electrode 32 because of the relation of gravity and fills clearance G P3, (refer to figure 4C), cause short-circuit between the second termination electrode 21 and the 5th termination electrode 32, between the second termination electrode 21 and the 5th termination electrode 32 Current path is formed, thus, the speed of the first fusible conductor 8 fusing can accelerate, the time of fusing can shorten, and this structure is applied Make because of high current demand the first fusible conductor 8 thickness must increased protection element be in demand, it is often more important that, , can also be by the current path of the second termination electrode 21 (i.e. electric current Ic1 and electric current Id1 road after the first fusible conductor 8 fuses Footpath) switch on the 5th termination electrode 32.

Fig. 5 is shown as a kind of diagrammatic cross-section of protection element 887 of eleventh embodiment of the invention.Fig. 8 is shown as this Invention fourth embodiment it is a kind of can charge-discharge battery bag 588b circuit diagram, wherein, can charge-discharge battery bag 588b comprising this The equivalent circuit diagram of the protection element 887 of invention.It please also refer to Fig. 5, Fig. 3 F and Fig. 8, the protection element 887 of the present embodiment It is similar to Fig. 3 F protection element 889d, be in place of the two Main Differences only：The protection element 887 of the present embodiment is also comprising the Two fusible conductors 81 and three-end electrode 12 (as shown in figure 8, the structure of three-end electrode 12 refers to Fig. 1 F).Second fusible leads Body 81 is configured in insulation crust body 19.One end electrical connection three-end electrode 12 of second fusible conductor 81, second fusible leads The other end of body 81 through the second termination electrode 21 of ennation electrode 21x electrical connections (certainly also can as shown in Figure 2 B, second is fusible The other end of conductor 81 directly couples or is electrically connected the second termination electrode 21), as shown in figure 8, can be in the first termination electrode 11, second Multiple current paths (i.e. electric current Ic1 path and electric current Id2 path) are formed between termination electrode 21, three-end electrode 12, Or, at least two articles different rated current can be formed between the first termination electrode 11, the second termination electrode 21, three-end electrode 12 Current path (i.e. electric current Ic1 path and electric current Id2 path).

, please when the electric current Ic1 or Id2 higher than load current value flow through the first fusible conductor 8 or the second fusible conductor 81 With reference to Fig. 1 E and foregoing【The action specification of protection element 888】, the first fusible conductor 8 or the second fusible conductor 81 understand itself hair Heat and fuse.

Another situation is：When 7 heating power of heater, (one) first fusible conductor 8 or the second fusible conductor 81 are melt It is disconnected；(2) first fusible conductors 8 are blown with the priority of the second fusible conductor 81, the guarantor of the explanation and the 5th embodiment of fusing process Explanation in protection element 889 is similar, please voluntarily refers to, and will not be repeated here.

Specifically be：First fusible conductor 8 and the second fusible conductor 81 can select the material of different melting points, or Select the material of identical fusing point but with different sectional areas, can so allow the protection element 887 of the present embodiment that there are different volumes Determine two current paths of electric current.Separately, if the first fusible conductor 8 and the second fusible conductor 81 select the material and tool of identical fusing point When having identical sectional area, also the first fusible conductor 8 can be designed to differ with the thickness of the second fusible conductor 81 and (do not shown Go out), so when 7 heating power of heater, can control the first fusible conductor 8 and the second fusible conductor 81 in both thickness compared with Thin person first fuses, and thickness fuses compared with after thick one, reach can be needed for charge-discharge battery bag 588b special protection function or purpose. Separately, the protection element 887 of the present embodiment also can comprising two heaters (as shown in Figure 10 B), respectively from the first fusible conductor 8 or The different two surfaces heating of second fusible conductor 81, can so shorten the first fusible conductor 8 or the second fusible conductor 81 fuses Time, related description refers to twelveth embodiment of the invention.

【Protection element 886】

Figure 10 B are shown as a kind of diagrammatic cross-section of protection element 886 of twelveth embodiment of the invention, and Figure 10 A are shown For a kind of equivalent circuit diagram of protection element 886 of twelveth embodiment of the invention.Figure 10 A and Figure 10 B are please also refer to, this The protection element 886 of embodiment includes：Insulation crust body 19, multiple termination electrodes, fusible conductor 8 and multiple heaters 7.It is above-mentioned Multiple termination electrodes include the first termination electrode 11, the second termination electrode 21 and the 4th termination electrode 31, and the termination electrode is outer through insulation Housing 19 and supported by insulation crust body 19.First termination electrode 11, the second termination electrode 21, wherein one end of the 4th termination electrode 31 are matched somebody with somebody (exposed) is put in outside insulation crust body 19, the first termination electrode 11, the other end configuration (float) of the second termination electrode 21 are in outside insulation In housing 19, the another two end configuration (float) of the 4th termination electrode 31 is in insulation crust body 19.Fusible conductor 8 configures outer in insulation In housing 19.The two ends of fusible conductor 8 are electrically connected the first termination electrode 11 and the second termination electrode 21 respectively, with the first termination electrode 11 and second form current path (i.e. electric current Ic1 and electric current Id1 current path) between termination electrode 21.Above-mentioned multiple heatings Body 7 includes the first heater 71 and the second heater 72.First heater 71 is configured at 21 liang of 8 and second termination electrode of fusible conductor The top of person overlapping region.First heater 71 (can pass through heater electrode 7a, 7b) is coupled in the first surface of fusible conductor 8 Between 8-1 and the 4th termination electrode 31.Second heater 72 is configured at the lower section at the second end of the second termination electrode 21.Second heater 72 (can pass through heater electrode 7a, 7b) are coupled between the second termination electrode 21 and the 4th termination electrode 31.When the first heater 71 Adstante febre, the first heater 71 can be heated to the first surface 8-1 of fusible conductor 8, and the second heater 72 can be via Two termination electrodes 21 are heated to the second surface 8-2 of fusible conductor 8 (because the second termination electrode 21 couples the second of fusible conductor 8 Surface).Consequently, it is possible to which the configuration of the first heater 71 and the second heater 72 may achieve the function of Multi-surface heating fusible conductor 8 Or effect, especially in high current (such as：50A or more than 100A rated current) application on, the sectional area of fusible conductor 8 must It must increase, and Multi-surface heating is the optimal selection of fusible conductor 8 of most fusing soon.

【First heater 71, the second heater 72, heating electrode 7a, 7b】

First heater 71 of the protection element 888 of twelveth embodiment of the invention, the second heater 72 are with chip The mode of mode or sandwich, heating material is pressed into the sheet or chip of any shape, is then applied on two sides or two ends Upper electrode material or conductive material, sintered to form, it is the first heater 71 or the second heater 72, two sides or two to be formed middle End is heater electrode 7a, 7b.First heater 71 is configured on the fusible conductor 8, and the first heater 71 one end via Heater electrode 7a is electrically connected fusible conductor 8, and the other end of the first heater 71 is via heater electrode 7b electrical connections the Four termination electrodes 31.Second heater 72 is configured on the second termination electrode 21, and one end of the second heater 72 is electric via heater Pole 7a is electrically connected the second termination electrode 21, and the other end of the second heater 72 is electrically connected the 4th end via heater electrode 7b Electrode 31.Preferably in heater 71, one insulating barrier of the coating of 72 bodies or cladding, the characteristic of its proof voltage can be lifted.Separately, The method of electrical connection：It is similar to the method that the first termination electrode 11 or the second termination electrode 21 are electrically connected to foregoing fusible conductor 8, Connect, please voluntarily refer to by solder 9, will not be repeated here.Specifically be the known tool heat generation characteristic of any industry Chip-shaped or wafer type resistance, be suitable for the present invention heater 71,72.

Separately, specifically be the present invention all embodiments, the first heater 71 therein, the second heater 72 its Resistance value or maximum rated voltage can be with identical, can also be different, it is preferred that the resistance value or maximum amount of the second heater 72 Determine resistance value or maximum rated voltage of the voltage higher than the first heater 71.In addition, the present invention may also include following deformation implementation Example：The protection element 886 of Figure 10 B embodiments of the present invention also can only set the first heater 71 and be not provided with the second heater 72； Either, the protection element 886 of Figure 10 B embodiments of the present invention also can only set the second heater 72 and be not provided with the first heater 71, its end is depending on practical application or design requirement.

Separately, specifically be all termination electrode of the present invention, its thickness is both greater than heater electrode 7a, 7b with density Thickness and density.It is the second termination electrode 21 that one of principal character of the present embodiment, which is responsible for adsorbing the fusible conductor 8 being melted, Its thickness, density and fusing point are better than heater electrode 7a, 7b, and the fusible conductor 8 that the second termination electrode 21 will not be melted is mutual Melt and power off and stop heating, it is ensured that the very thick or big fusible conductor 8 of thickness can be melted and be attracted to the second termination electrode 21 On.

【Protection element 886a】

Figure 11 is shown as a kind of protection element 886a of thriteenth embodiment of the invention diagrammatic cross-section, its equivalent circuit Figure 10 A.Figure 11 and Figure 10 A are please also refer to, the protection element 886a of the present embodiment includes：Insulation crust body 19, Duo Geduan Electrode, fusible conductor 8, two insulated substrates 10 and two heaters 7.Above-mentioned multiple termination electrodes comprising the first termination electrode 11, Second termination electrode 21 and the 4th termination electrode 31.The termination electrode is supported through insulation crust body 19 and by insulation crust body 19. First termination electrode 11, the second termination electrode 21, each termination electrode in the 4th termination electrode 31 wherein one end configuration (exposed) in Outside insulation crust body 19, the first termination electrode 11, each termination electrode in the second termination electrode 21 other end configuration (float) in In insulation crust body 19, the another two end configuration (float) of the 4th termination electrode 31 is in insulation crust body 19.

Fusible conductor 8 is configured in insulation crust body 19.The two ends of fusible conductor 8 are electrically connected the first termination electrode 11 respectively With the second termination electrode 21, to form current path (i.e. electric current Ic1, electric current between the first termination electrode 11 and the second termination electrode 21 Id1 path).In above-mentioned two insulated substrates 10, one of insulated substrate 10 is configured on fusible conductor 8, and another is exhausted Edge substrate 10 is configured on the 4th termination electrode 31.

Above-mentioned two heaters 7 include the first heater 71 and the second heater 72.First heater 71 is configured at wherein On one insulated substrate 10, and it is configured at the top of both overlapping regions of termination electrode 21 of fusible conductor 8 and second.First heater 71 one end is electrically connected fusible conductor 8 via heater electrode 7a, and the other end of the first heater 71 is via heater electrode 7b is electrically connected the 4th termination electrode 31, wherein covering insulating barrier 16 on the first heater 71.Second heater 72 is configured another In one insulated substrate 10, and it is configured at the lower section at the second end of the second termination electrode 21.One end of second heater 72 is via hair Hot body electrode 7b is electrically connected the 4th termination electrode 31, and the other end of the second heater 72 electrically connects via heater electrode 7a Connect second termination electrode 21.

Figure 10 B and Figure 11 are please also refer to, the protection element 886a and Figure 10 B of the present embodiment protection element 886 are similar, It is in place of two Main Differences only：The protection element 886a of the present embodiment is also comprising two insulated substrates 10, and one of them is exhausted Edge substrate 10 is configured on fusible conductor 8, and another insulated substrate 10 is configured on the 4th termination electrode 31, and the first heater 71 It is configured on one of insulated substrate 10, and the second heater 72 is configured in another insulated substrate 10.12nd implements The first heater 71 of protection element 886 of example, the second heater 72 are made of that, with chip structure, and the protection of the present embodiment is first Part 886a the first heater 71 is imprinted in the way of wire mark on one of insulated substrate 10, and the second heater 72 is then with net The mode of print is imprinted in the insulated substrate 10 of another sandwich construction.The heater electricity of first heater 71 and the second heater 72 Pole 7a, 7b, can be by conductive through hole (not shown) in the side of insulated substrate 10 or the export heater electricity in insulated substrate 10 Pole 7a, 7b to the different surface of insulated substrate 10 (such as：Upper surface and lower surface), to be used as electric connection fusible conductor 8, second The termination electrode 31 of termination electrode 21 and the 4th is used.Specifically, the first heater 71, the second heater 72 can be used arbitrarily Insulation is configured on insulated substrate 10 or is configured in the structure or the 13rd embodiment of chip type in such as the 12nd embodiment Structure combination in substrate 10, a kind of or identical structure can only be selected by not limiting.Separately, on each insulated substrate 10 or insulate In substrate 10, it is possibility to have multiple heaters are connected in parallel with each other (not shown), come increase heater maximum rated voltage or Higher heat energy.

【Can charge-discharge battery bag 588,588a, 588b, 588c】

Fig. 6 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery bag 588 circuit diagram.Can charge-discharge battery bag 588 include：Cell device group 4, charge-discharge control circuit 2, detection control circuit 5 and protection element 888c.Cell device group 4 With four cell device 4-1,4-2,4-3,4-4 (but the invention is not restricted to this).Charge-discharge control circuit 2 is responsible for control charge and discharge The open and close of electric current.Detection control circuit 5 detect respectively each cell device 4-1 in cell device group 4,4-2,4-3, 4-4 magnitude of voltage or temperature value, and output signal to charge-discharge control circuit 2.Protection element 888c termination electrode 11,21,12 It is connected in series between cell device group 4 and charge-discharge control circuit 2, forms different discharge and recharge path (i.e. electric current Ic1 and electricity Flow Id2 path).The charge-discharge control circuit 2 that can be in charge-discharge battery bag 588 of the present embodiment, can according to it is external be to fill Electric installation 1 or electronic installation 1 and detection control the signal that circuit 5 is exported to open and close the electric current of discharge and recharge.Work as height The first fusible conductor 8 is flowed through in the electric current Ic1 of load current value or electric current Id2 higher than load current value flows through second and fusible led During body 81, the first fusible conductor 8 or the second fusible conductor 81 can fuse, to disconnect charging current Ic1 or discharge current Id2 road Footpath, with reach protection cell device group 4 or can charge-discharge battery bag 588 excess current protective function.

【Variation】

Fig. 6 protection element 888c that can be in charge-discharge battery bag 588 also uses the protection in other embodiments of the invention Element 888 or protection element 888a are substituted, and both are at main difference：Protection element 888 or 888a charging current Ic1 with The path that discharge current Id1 is flowed through is identical, that is, charging current Ic1 and discharge current Id1 flow through the first fusible conductor 8, therefore charging current Ic1 is identical with discharge current Id1 load current value.

Fig. 7 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery bag 588a circuit diagram.Can charge-discharge battery bag 588a includes：Cell device group 4, on-off circuit 6, charge-discharge control circuit 2, detection control circuit 5, protection element 889 or 889a or 889b or 889c or 889d and current-limiting circuit F1.Cell device group 4 have four cell device 4-1,4-2,4-3, 4-4.The original state of on-off circuit 6 is open circuit, its can be switched to according to the detection signal that be exported of control circuit 5 short circuit or It is switched on.Charge-discharge control circuit 2 is responsible for the open and close of control charging and discharging currents.Detection control circuit 5 detects electricity respectively Each cell device 4-1,4-2,4-3,4-4 magnitude of voltage or temperature value in pond element group 4, to output signal to charge and discharge control Circuit 2 and on-off circuit 6.Protection element 889 or 889a or 889b or 889c or 889d termination electrode 11,21 are connected in series in electricity Between pond element group 4 and charge-discharge control circuit 2, discharge and recharge path (i.e. electric current Ic1 and electric current Id1 path) is formed.Current limliting Circuit F1 is connected in series between heater 7 and on-off circuit 6.

Fig. 8 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery bag 588b circuit diagram.Please also refer to Fig. 8 with And Fig. 7, the present embodiment can charge-discharge battery bag 588b and Fig. 7 can charge-discharge battery bag 588a it is similar, only two it is main poor Different part is：The protection element that can be in charge-discharge battery bag 588b of the present embodiment is with the protection element 887 in the present invention To replace Fig. 7 protection element that can be in charge-discharge battery bag 588a.Protection element 887 has two current paths, and one is Charging current path (i.e. electric current Ic1 path), another discharge current path (i.e. electric current Id1 path), so that this implementation Example can charge-discharge battery bag 588b can be used different charging and discharging currents values come to cell device group 4 carry out discharge and recharge.Protection Element 887 is because with the first fusible conductor 8 and the second fusible conductor 81, so can also provide the overcurrent of different charging and discharging currents Defencive function.Separately, any one generation exception in cell device 4-1,4-2,4-3,4-4 is detected when detection control circuit 5 (such as：Overcharge or excess temperature) when, then can sending signal to on-off circuit 6, on-off circuit 6 is switched into short-circuit condition or conducting shape State, causes electric current I7 to flow through heater 7.Heater 7 fused because of heating power the first fusible conductor 8 or fusing it is first fusible The fusible conductor 81 of conductor 8 and second, to disconnect charging current Ic1 or disconnect charging current Ic1 and discharge current Id2, reaching can Charge-discharge battery bag 588b's overcharges or overvoltage or the function of overheat protector.Separately, the voltage between heater 7 is connected across is being just Chang Shi, current-limiting circuit F1 resistance value is very low, but when the voltage between being connected across heater 7 exceedes rated voltage, Current-limiting circuit F1 resistance values can be raised, and to limit the electric current by heater 7 within load current value, and reach protection heating The function of body 7.

Fig. 9 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery bag 588c circuit diagram.Can charge-discharge battery bag 588c includes：Cell device group 4a and 4b, on-off circuit 6a and 6b, charge-discharge control circuit 2, detection control circuit 5a and 5b with And protection element 885a and 885b.Cell device group 4a has two cell devices 4-1 and 4-2, and cell device group 4b has Two cell devices 4-3 and 4-4.On-off circuit 6a and 6b original state are open circuit, can make switch respectively according to input signal Circuit 6a, 6b short circuit or conducting.Charge-discharge control circuit 2 is responsible for the open and close of control charging and discharging currents.Detection control electricity Road 5a can detect the magnitude of voltage or temperature value of each cell device 4-1 and 4-2 in cell device group 4a, and output signal to charge and discharge Electric control circuit 2 and on-off circuit 6a.Similarly, detection control circuit 5b can detect each cell device in cell device group 4b 4-3 and 4-4 magnitude of voltage or temperature value, and output signal to charge-discharge control circuit 2 and on-off circuit 6b.Protection element 885a Termination electrode 11,21 be connected in series in respectively between cell device group 4a and charge-discharge control circuit 2, and protection element 885b Termination electrode 21,11 is connected in series between cell device group 4a and 4b respectively, to form discharge and recharge path (i.e. electric current Ic1 and electricity Flow Id1 path).On-off circuit 6a is connected in series in protection element 885a heater 7 and the ground terminal of charge-discharge control circuit 2 Between G, and on-off circuit 6b be connected in series in protection element 885b heater 7 and charge-discharge control circuit 2 ground terminal G it Between.Protection element 885a termination electrode 32 is electrically connected to protection element 885b termination electrode 21, and protection element 885b end Electrode 32 is connected to the ground terminal G of charge-discharge control circuit 2.

【Can charge-discharge battery bag 588c protection act explanation】

When the charging and discharging currents Ic1 and Id1 higher than load current value flow through protection element 885a the first fusible conductor 8 and During protection element 885b the first fusible conductor 8, any of the above-described first fusible conductor 8 can generate heat and fuse, so that reach can charge and discharge Electric battery bag 588c excess current protective function.Separately, when any battery element 4-1,4-2 in cell device group 4a are overcharged Or overvoltage or excess temperature, detection control circuit 5a meetings sending signal gives on-off circuit 6a, to flow a current through protection element 885a Heater 7.Protection element 885a heater 7 fuse protection element 885a because of heating power the first fusible conductor 8, and Make the switch S short circuits between protection element 885a the second termination electrode 21 and protection element 885a the 5th termination electrode 32, will (bypass) is shifted to protection element 885b the second termination electrode in charging and discharging currents path (i.e. electric current Ic1 and electric current Id1 path) 21, charge-discharge control circuit 2 is only carried out discharge and recharge to cell device group 4b, without carrying out charge and discharge to cell device group 4a Electricity.Can, when any one in cell device group 4a and 4b occurs abnormal, not result in the characteristics of charge-discharge battery bag 588c Entirely can charge-discharge battery bag 588c can not discharge and recharge, only can bypass problematic cell device group, this technology or this protection member Part 885a, 885b, can reduce can charge-discharge battery bag 588c waste, prior art can have any electricity in charge-discharge battery bag Pond element is abnormal, after protection element is acted, entirely can charge-discharge battery bag can not just carry out discharge and recharge, and cause the wave of resource Take.

Figure 12 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery bag 588d circuit diagram.The present embodiment fills Discharge battery bag 588d includes：Cell device group 4, on-off circuit 6, charge-discharge control circuit 2, detection control circuit 5, protection member Part 886 or 886a and current-limiting circuit F1.Cell device group 4 has four cell devices 4-1,4-2,4-3,4-4.On-off circuit 6 original state is open circuit, and it can switch to short-circuit condition or conducting state according to input signal.Charge-discharge control circuit 2 Open and close to control charging and discharging currents.Detection control circuit 5 can detect each battery member in cell device group 4 respectively Part 4-1,4-2,4-3,4-4 magnitude of voltage or temperature value, and output signal to charge-discharge control circuit 2 and on-off circuit 6.Protection Element 886 or 886a termination electrode 11,21 are connected in series between cell device group 4 and charge-discharge control circuit 2, are filled with being formed Discharge path (i.e. electric current Ic1 and electric current Id1 path).Current-limiting circuit F1 be connected in series in heater 7 and on-off circuit 6 it Between.

Specifically be：The embodiment of the present invention can not include in charge-discharge battery bag 588a, 588b, 588d yet Current-limiting circuit F1.The characteristics of current circuit F1 that rations the power supply is main be：Just in case the voltage for being connected across heater 7 exceedes maximum rated voltage When, current-limiting circuit F1 can limit the electric current for flowing through heater 7, be imitated with the function or fruit that reach protection heater 7.But, if can fill Abnormal voltage will not occur for discharge battery bag 588a, 588b, 588d cell device group 4 or input voltage or not over highest Rated voltage person, can also be not required to current-limiting circuit F1.Certainly, if adding current-limiting circuit F1, the effect of protection can be preferable, but can increase Plus some manufactures or product cost.

【Can charge-discharge battery bag 588d protection act explanation】

The present embodiment can in charge-discharge battery bag 588d, when external device is charging device 1 or electronic installation 1, and When charging and discharging currents (Ic1 and Id1) higher than load current value flow through fusible conductor 8, the fusing that can generate heat of fusible conductor 8 (please be joined Examine Figure 10 C), with reach can charge-discharge battery bag 588d excess current protective function.Separately, when external device be charging device 1, and Any battery element 4-1,4-2,4-3,4-4 that detection control circuit 5 is detected in cell device group 4 are overcharged or overvoltage Or during excess temperature, detection control circuit 5 can sending signal to on-off circuit 6, with switch original place in off state on-off circuit 6 to Conducting or short-circuit condition, now, electric current will flow through the first heater 71 and the second heater 72, cause the first heater 71 and the The heating power of two heater 72, and the fusible conductor 8 that fuses (refer to Figure 10 D, Figure 10 E, the pattern that fusible conductor 8 fuses is included： Any one in two shown by Figure 10 D, Figure 10 E), and make it is breaking between the second termination electrode 21 and the first termination electrode 11, with Charging and discharging currents path (i.e. electric current Ic1 and electric current Id1 path) is disconnected or shut off, makes the charge-discharge control circuit 2 can not be after It is continuous that charge or discharge are carried out to cell device group 4, reach can charge-discharge battery bag 588d overvoltage or overheat protector function.

Specifically, the protection element 888d that can be in charge-discharge battery bag 588 of the present embodiment, in cell device Group 4 is overcharged or when overvoltage or excess temperature, can be fused fusible conductor 8 and be stopped to the discharge and recharge of cell device group 4, but now electricity Pond element group 4 may be still in being overcharged or overvoltage or over-temperature condition, and protection element 888d of the invention is stilld provide via hair The discharge path of hot body 71,72, is overcharged or overvoltage or the state of excess temperature so that cell device group 4 can be released.

Although the present invention is disclosed as above with embodiment, so it is not limited to the present invention, any art Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when a little change and retouching can be made, thus it is of the invention Protection domain when depending on being defined that claim is defined.

Claims

1. a kind of protection element, it is characterised in that including：

Insulation crust body；

Multiple termination electrodes, comprising the first termination electrode and the second termination electrode, the multiple termination electrode through the insulation crust body and Supported by the insulation crust body, the first end of each in the multiple termination electrode is configured at the insulation crust in vitro, The second end of each in the multiple termination electrode is configured in the insulation crust body, wherein the institute of second termination electrode Stating has the second gap between the base of the second end and the insulation crust body；

First fusible conductor, is configured in the insulation crust body, and the two ends of first fusible conductor are electrically connected institute respectively The first termination electrode and second termination electrode are stated, to form electric current road between first termination electrode and second termination electrode Footpath；And

An at least heater, is configured at the lower section at second end of second termination electrode or is configured at described first and fusible lead The top of both body and second termination electrode overlapping region, the first end electrical connection described second of an at least heater Second end of termination electrode.

2. protection element according to claim 1, it is characterised in that：

Second end of first termination electrode is supported by the base or protuberance of the insulation crust body；Either

The protection element also includes flux material, wherein flux material configuration is in the insulation crust body and described first Between fusible conductor.

3. protection element according to claim 1, it is characterised in that also include：

Multiple bossy bodies, the multiple bossy body is arranged respectively in first fusible conductor and the multiple termination electrode extremely Between few one；And

Between solder, at least one of configuration in first fusible conductor and the multiple termination electrode.

4. protection element according to claim 1, it is characterised in that：

There is the first gap, and institute between second end of first termination electrode and the base of the insulation crust body The first gap is stated more than or less than second gap；And

The middle section of first fusible conductor has the change of slope.

5. protection element according to claim 1, it is characterised in that the multiple termination electrode also includes：

Three-end electrode, one end of the three-end electrode is electrically connected to first fusible conductor, causes the multiple end Multiple current paths are formed between electrode.

6. protection element according to claim 1, it is characterised in that also include：

Second fusible conductor, is configured in the insulation crust body, and one end electrical connection of second fusible conductor is described Second termination electrode,

Wherein the multiple termination electrode also includes three-end electrode, and one end of the three-end electrode is electrically connected to described second The other end of fusible conductor, causes and multiple current paths is formed between the multiple termination electrode.

7. protection element according to claim 6, it is characterised in that：

The multiple termination electrode also includes the 4th termination electrode, and the of an at least heater described in the 4th termination electrode electrical connection Two ends,

After an at least heater heating power, the hot melt at least produced by a heater, which breaks, described first fusible leads Body and at least one in second fusible conductor.

8. protection element according to any one of claim 1 to 7, it is characterised in that second termination electrode couples institute The second surface of the first fusible conductor is stated, wherein the protection element also includes：

Ennation electrode, one end of the ennation electrode couples second end of second termination electrode, the ennation The other end of electrode couples the first surface of first fusible conductor.

9. protection element according to any one of claim 1 to 6, it is characterised in that the multiple termination electrode also includes 4th termination electrode, wherein the protection element also includes：

Insulated substrate, wherein at least heater configuration is on the insulated substrate or configures in the insulated substrate, Second end of a wherein described at least heater is electrically connected the 4th termination electrode.

10. protection element according to any one of claim 1 to 6, it is characterised in that the multiple termination electrode also includes 4th termination electrode, wherein the protection element also includes：

First heater electrode, is configured between the first end of second termination electrode and an at least heater, its Described in the first end of an at least heater be electrically connected second termination electrode via the first heater electrode； And

Second heater electrode, is configured between the second end of an at least heater and the 4th termination electrode, wherein institute Second end for stating an at least heater is electrically connected the 4th termination electrode via the second heater electrode,

Wherein described second termination electrode, the first heater electrode, an at least heater, the second heater electrode With the 4th termination electrode formation sandwich structure.

11. protection element according to any one of claim 1 to 7, it is characterised in that also include：

5th termination electrode；And

An at least passage, at least passage configuration is between first fusible conductor and the 5th termination electrode, and institute Stating has third space, when an at least heater adstante febre, melting between an at least passage and the 5th termination electrode An at least passage and the third space described in the first fusible conductor inflow, cause second termination electrode and the described 5th It is short-circuit between termination electrode, to form another current path between second termination electrode and the 5th termination electrode.

12. protection element according to any one of claim 1 to 6, it is characterised in that second termination electrode couples institute The second surface of the first fusible conductor is stated, wherein the multiple termination electrode also includes the 4th termination electrode, wherein at least one hair Hot body includes：

First heater, is coupled between the first surface of first fusible conductor and the 4th termination electrode；And

Second heater, is coupled between second termination electrode and the 4th termination electrode,

When an at least heater adstante febre, first heater enters to the first surface of first fusible conductor Row heating, and second surface progress of second heater via second termination electrode to first fusible conductor Heating.

13. protection element according to claim 12, it is characterised in that also include：

First insulated substrate, wherein first heater is configured on first insulated substrate or first insulated substrate It is interior；And

The second insulated substrate, wherein second heater is configured on the second insulated substrate or the second insulated substrate It is interior.

14. one kind can charge-discharge battery bag, it is characterised in that including：

An at least cell device group；And

Protection element according to any one of claim 1 to 13, wherein the protection element and an at least battery Element group is connected in series to form an at least charging and discharging currents path,

When occurring over-current condition when flowing through the charging and discharging currents in the protection element and exceeding load current value, the protection Element disconnect described at least one in an at least charging and discharging currents path.

15. according to claim 14 can charge-discharge battery bag, it is characterised in that also include：

Detection control circuit, voltage or temperature to detect an at least cell device group；And

Charge-discharge control circuit, to the state and external device according to the voltage detected by the detection control circuit Species, and judge whether to transmit described in charging current to an at least cell device group or oneself at least from the external device One cell device group transmits discharge current to the external device.

16. one kind can charge-discharge battery bag, it is characterised in that including：

An at least cell device group；

Protection element according to any one of claim 1 to 13, wherein the protection element and an at least battery Element group is connected in series to form an at least charging and discharging currents path；

On-off circuit, is couple to the second end of an at least heater；And

Detection control circuit, voltage or temperature to detect an at least cell device group, according to detected voltage Or temperature and the state for determining the on-off circuit,

If the voltage or temperature of a wherein described at least cell device group are normal, the on-off circuit is maintained at breaking shape State, if the voltage or temperature anomaly of an at least cell device group, the on-off circuit are switched to conducting state, caused In an at least charging and discharging currents path between the protection element disconnection and an at least cell device group at least One,

17. one kind can charge-discharge battery bag, it is characterised in that including：

In multiple cell device groups, the multiple cell device group each include at least one can discharge and recharge cell device；

Multiple protection elements according to claim 11, the multiple protection element is concatenated with the multiple cell device group To form charging and discharging currents path；

Each in multiple switch circuit, the multiple on-off circuit is couple to one of them in the multiple protection element The 4th termination electrode；And

Detection control circuit, voltage or temperature to detect the multiple cell device group, according to detected voltage or Temperature and determine the state of each in the multiple on-off circuit,

If the voltage or temperature of wherein the multiple cell device group are normal, the multiple on-off circuit is maintained at breaking shape State, if the voltage of any one or temperature anomaly in the multiple cell device group, corresponding to the abnormal cell device The on-off circuit of group is switched to conducting state, causes the protection element corresponding to the abnormal cell device group The charging and discharging currents path between the abnormal cell device group is disconnected, and the charging and discharging currents path is switched Remaining normal cell device group into the multiple cell device group,

When flow through the charging and discharging currents of any one in the multiple protection element more than load current value and occur overcurrent shape During condition, the protection element for occurring over-current condition disconnects the charging and discharging currents path.