CN106960772B - Protection element and chargeable and dischargeable battery pack - Google Patents
Protection element and chargeable and dischargeable battery pack Download PDFInfo
- Publication number
- CN106960772B CN106960772B CN201611231714.9A CN201611231714A CN106960772B CN 106960772 B CN106960772 B CN 106960772B CN 201611231714 A CN201611231714 A CN 201611231714A CN 106960772 B CN106960772 B CN 106960772B
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- Prior art keywords
- termination electrode
- protection element
- heater
- electrode
- fusible conductor
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H2085/0555—Input terminal connected to a plurality of output terminals, e.g. multielectrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuses (AREA)
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
Technical field
The present invention relates to one kind can charge-discharge battery packet and its protection element, and in particular to one kind has overcurrent, mistake
Voltage or over-temperature protection function and can bear high charge-discharge electric current can charge-discharge battery packet and its protection element.
Background technique
3C Product or electronics technology industry are more and more important, especially the industry in action and communication device.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
It is limited to space, so the size of battery is also considerably limited, in the case where size constancy, battery capacity need to be promoted,
It is the developing direction of battery industry now.The safety of battery is even more the subject under discussion that everybody pays much attention to, especially running gear
Screen constantly becomes larger, and resolution ratio is constantly promoted, complexity and the electricity needs of flash lamp of camera function etc., running gear
Stand-by time with become all manufacturers using the time 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 safety of battery is just at there are no avoidable subjects 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.How in a limited space in design at least with the smallest element, and reach overcurrent and mistake
The protection of voltage becomes one of the target of part manufacturing quotient pursuit.
The electrode of prior art protection element is mostly configured on substrate, and future is applied to the relevant operating current of motor all
Comparable height, even higher than 50A, the circulation of all unbearable such high current of the electrode and substrate being set on substrate, even
Electrode and substrate all can be melted and be ruptured.
The over-current protecting element of general patch type, is printed on insulating substrate using the metal materials such as silver, copper mostly
Come up as electrode or termination electrode, is not have when the product design of application uses lesser electric current such as 15A electric current below
Any problem.But when its operating current of the product of application or rated current range are between 30A~100A, with printing side
Electrode made by formula or termination electrode, just unbearable so high operating current or rated current, because the metal of printing
The limitation that thickness and density have its certain is more likely to cause electrode so that the internal resistance of electrode itself is difficult to drop to very low value
It melts or disconnects because by big operating current or rated current.
In addition, fusible conductor is to that can bear operating current or rated current between 30A~100A, sectional area (thickness
With width) it must all increase, two-part distance is separated into after fusible conductor fusing, it is also necessary to there are enough spaces, it is ensured that
The insulation resistance of fusible conductor is in safe range after disconnection.
In addition, fusible conductor is to that can bear operating current or rated current between 30A~100A, sectional area (thickness
With width) must all increase, in addition, fusible conductor single 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 bearing high rated current, can be used high density and high conductivity metal foil or
Sheet metal or metal strip etc., as the material of the multiple termination electrode, but, aforementioned fusible conductor also mostly uses metal material,
It engages or is electrically connected well or very low contact resistance so having termination electrode above-mentioned and fusible conductor above-mentioned,
It is a considerable technology, commonly known method is to weld termination electrode above-mentioned by solder fusible to lead with above-mentioned
Body, although feasible, solder is usually paste and heat can melt, and how to ensure termination electrode above-mentioned and fusible conductor above-mentioned
Between have enough solders to weld be considerable technology.Such as: if in termination electrode above-mentioned or fusible conductor above-mentioned
A side pressure, then solder may overflow goes out between termination electrode above-mentioned and fusible conductor above-mentioned due to external force, causes solder
It is insufficient and form failure welding.In addition, if not pressing in a side of termination electrode above-mentioned or fusible conductor above-mentioned, it is possible to aforementioned
Termination electrode or fusible conductor above-mentioned spacing between the two it is excessive, do not completely attach to solder, cause missing solder.Above
Problem is all to cause the undesirable possible cause of protection element.
Summary of the invention
In consideration of it, the present invention provide a kind of protection element with can charge-discharge battery packet, use and solve described in the prior art
The problem of.
Protection element of the invention includes insulation crust body, multiple termination electrodes, the first fusible conductor and at least one fever
Body.The multiple termination electrode includes the first termination electrode and the second termination electrode.The multiple termination electrode through insulation crust body and
It is supported by insulation crust body.It is external and described more that the first end of each of the multiple termination electrode is configured at insulation crust
The second end of each of a termination electrode is configured in insulation crust body.The second end of second termination electrode and insulation crust body
There is the second gap between pedestal.First fusible conductor configures in insulation crust body.The both 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 of 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 pedestal or protrusion branch
Support.Either, above-mentioned protection element further 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 further includes multiple bossy bodies and solder.The protrusion
Body is arranged respectively between at least one of the first fusible conductor and above-mentioned multiple termination electrodes.Solder configuration fusible is led first
Between at least one of 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 pedestal 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
Variation.
In one embodiment of this invention, above-mentioned multiple termination electrodes further include third termination electrode.The one of third termination electrode
End electrical connection causes to form multiple current paths between the multiple termination electrode to the first fusible conductor.
In one embodiment of this invention, above-mentioned protection element further includes the second fusible conductor.Second fusible conductor is matched
It sets in insulation crust body, and one end of the second fusible conductor is electrically connected the second termination electrode.The multiple termination electrode further includes
Third termination electrode.One end of third termination 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 further 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, heat caused by this at least heater
Fuse at least one of 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 further 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 further include the 4th termination electrode.Above-mentioned protection element is also
Including insulating substrate.The configuration of an above-mentioned at least heater is on insulating substrate or configuration is in insulating substrate, wherein it is above-mentioned at least
The second end of one heater is electrically connected the 4th termination electrode.
In one embodiment of this invention, above-mentioned multiple termination electrodes further 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, wherein at least the first end of a heater is electrically connected second end electricity via the first heater electrode
Pole.Second heater electrode configuration is at least between the second end of a heater and the 4th termination electrode, a wherein at least heater
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 form sandwich structure.
In one embodiment of this invention, above-mentioned protection element further includes the 5th termination electrode and an at least channel.Extremely
Few channel configuration has the between the first fusible conductor and the 5th termination electrode, and between an at least channel and the 5th termination electrode
Three gaps.When an at least heater adstante febre, the first fusible conductor of melting flows at least a channel 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 further 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 carries out the first surface of the first fusible conductor
Heating, and the second heater is heated via second surface of second termination electrode to the first fusible conductor.
In one embodiment of this invention, above-mentioned protection element further includes the first insulating substrate and the second insulation base
Plate.First heater configures on the first insulating substrate or in the first insulating substrate.The configuration of second heater is in the second insulation base
On plate or in the second insulated substrate.
It is of the invention can charge-discharge battery packet include at least a cell device group and above-mentioned protection element.Protection element
It is connected in series with an at least cell device group to form an at least charging and discharging currents path.When flowing through the charge and discharge in protection element
When electric current is more than load current value and over-current condition occurs, 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 packet further include detection control circuit and charge and discharge
Control circuit.Detect voltage or temperature of the control circuit to detect an at least cell device group.Charge-discharge control circuit to
According to the state of voltage and the type of external device 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.
It is of the invention can charge-discharge battery packet include at least a cell device group, above-mentioned protection element, switching circuit with
And detection control circuit.Protection element and an at least cell device group are connected in series to form an at least charging and discharging currents path.
Switching circuit is couple to the second end of an above-mentioned at least heater.Control circuit is detected to detect an at least cell device group
Voltage or temperature determine the state of switching circuit according to detected voltage or temperature.If an at least cell device group
Voltage or temperature are normal, then switching circuit is maintained at off state.If the voltage or temperature anomaly of an at least cell device group,
Then switching circuit is switched on state, and protection element is caused to disconnect at least charge and discharge between an at least cell device group
At least one of electric current path.Overcurrent occurs more than load current value when flowing through the charging and discharging currents in protection element
When situation, protection element disconnects at least at least one of charging and discharging currents path.
It is of the invention can charge-discharge battery packet include multiple cell device groups, multiple above-mentioned protection elements, multiple switch
Circuit and detection control circuit.Each of the multiple cell device group include at least one can charge and discharge battery member
Part.The multiple protection element is concatenated with the multiple cell device group to form charging and discharging currents path.The multiple switch
Each of circuit is couple to the 4th termination electrode of one of them in the multiple protection element.Detect control circuit to
The voltage or temperature for detecting the multiple cell device group determine the multiple switch according to detected voltage or temperature
The state of each of circuit.If the voltage or temperature of the cell device group are normal, the multiple switching circuit is protected
It holds in off state.If the voltage or temperature anomaly of any of the multiple cell device group, correspond to abnormal electricity
The switching circuit of pond element group is switched on state, cause the protection element 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.When the charging and discharging currents for flowing through any of the multiple protection element are more than volume
Constant current value and when over-current condition occurs, the protection element that over-current condition occurs disconnects charging and discharging currents path.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate institute's accompanying drawings
It is described in detail below.
Detailed description of the invention
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 is the schematic top plan view of the protection element of Figure 1B；
Fig. 1 D is the partial enlargement diagram of the region A of the protection element of Figure 1B；
Fig. 1 E is the diagrammatic cross-section after the first fusible conductor fusing of the protection element of Figure 1B；
Fig. 1 F is 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 is a kind of schematic top plan view of protection element of the embodiment of the present invention；
Fig. 3 A is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Fig. 3 B is the partial enlargement diagram of the region B of the protection element of Fig. 3 A；
Fig. 3 C is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Fig. 3 D is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Fig. 3 E is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Fig. 3 F is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Fig. 3 G is the diagrammatic cross-section after the first fusible conductor fusing of the protection element of Fig. 3 A；
Fig. 4 A is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Fig. 4 B is the schematic top plan view of the protection element of Fig. 4 A；
Fig. 4 C is the diagrammatic cross-section after the first fusible conductor fusing of the protection element of Fig. 4 A；
Fig. 5 is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Fig. 6 be the embodiment of the present invention it is a kind of can charge-discharge battery packet circuit diagram；
Fig. 7 be the embodiment of the present invention it is a kind of can charge-discharge battery packet circuit diagram；
Fig. 8 be the embodiment of the present invention it is a kind of can charge-discharge battery packet circuit diagram；
Fig. 9 be the embodiment of the present invention it is a kind of can charge-discharge battery packet circuit diagram；
Figure 10 A is a kind of equivalent circuit diagram of protection element of the embodiment of the present invention；
Figure 10 B is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Figure 10 C is the diagrammatic cross-section after the fusible conductor fusing of the protection element of Figure 10 B；
Figure 10 D is another diagrammatic cross-section after the fusible conductor fusing of the protection element of Figure 10 B；
Figure 10 E is the another diagrammatic cross-section after the fusible conductor fusing of the protection element of Figure 10 B；
Figure 11 is a kind of diagrammatic cross-section of protection element of the embodiment of the present invention；
Figure 12 be the embodiment of the present invention it is a kind of can charge-discharge battery packet circuit diagram.
Symbol description:
1: charging unit or electronic device
10: insulating substrate
10a: upper surface
10b: lower surface
11: the first termination electrodes
11c, 21c: bossy body
12: third termination electrode
16: insulating layer
19: insulation crust body
19a: insulation crust body matrix
19b: insulation crust body upper cover
19c: protrusion
19n: pedestal
2: charge-discharge control circuit
21: the second termination electrodes
21x: ennation electrode
31: the four termination electrodes
32: the five termination electrodes
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 packet
6,6a, 6b: switching circuit
7: heater
71: the first heaters
72: the second heaters
7a, 7b: heater electrode
8: the first fusible conductors
8-1: first surface
8-2: second surface
81: the second fusible conductors
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: the first gap
GP2: the second gap
GP3: gap
Ic1, Id1, Id2, I7: electric current
S: switch
T: channel
Specific embodiment
Feature and technology contents of the invention are further understood that be enabled, please refer to following relevant embodiment, and match
Institute's accompanying drawings are closed to be described in detail below.In addition, all possible places, use the member of identical label in the drawings and embodiments
Part/component represents same or like part.In addition, diagram is to show in a schematic way, the ratio and reality for having each size are 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 is shown as the one of first embodiment of the invention
The schematic top plan view of kind protection element 888.It please also refer to Figure 1A, Figure 1B and Fig. 1 C, the protection element 888 of the present embodiment is wrapped
It includes: 19, two termination electrodes of insulation crust body, the first fusible conductor 8 and flux material 91.Insulation crust body 19 includes that insulation is outer
Housing base 19a and insulation crust body upper cover 19b.Insulation crust body matrix 19a has two protrusion 19c.Insulation crust body
Upper cover 19b has hollow protrusion 19d.
Above-mentioned two termination electrodes include the first termination electrode 11 and the second termination electrode 21.Above-mentioned two termination electrode (i.e. first ends
Electrode 11 and the second termination electrode 21) run through insulation crust body 19 and is 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 extending in insulation crust body 19.One of them of two protrusion 19c
It can be used to the first termination electrode of support section 11, and the another one of two protrusion 19c can be used to support section second end electricity
Pole 21.More specifically, there is gap between the second end of the first termination electrode 11 and the pedestal 19n of insulation crust body 19, and
Also there is gap, in this way, which end electricity can be reduced between the second end of second termination electrode 21 and the pedestal 19n of insulation crust body 19
Pole (the first termination electrode 11 or the second termination electrode 21) and edge outer housing 19 are influenced by other side's temperature each other.Each protrusion
The benefit of portion 19c is the support strength that can promote the second end of each termination electrode.In addition to this, 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 termination electrode 11 and the second termination electrode 21, to reduce the internal resistance of the first termination electrode 11 and the second termination electrode 21.Such as
This one, generate high temperature when avoidable high current flows 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 invention, which all can be used similar to above explained mode, to be realized.It needs
Bright is that the insulation crust body matrix 19a of the present embodiment can also not have two protrusion 19c, but by above-mentioned first termination electrode
11 and second termination electrode 21 second end by the pedestal 19n of insulation crust body matrix 19a or insulation crust body matrix 19a support,
Either, the second end of one of the first termination electrode 11 and the second termination electrode 21 is only supported with a protrusion 19c, this
Whether all protection elements of invention need protrusion 19c to come the aforesaid plurality of termination electrode of reinforcement (the first termination electrode 11 and second end
Electrode 21) second end support force, all can freely configure on demand.
First fusible conductor 8 configures 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 is not identical as the fusing point of high-melting-point conductor layer 8b.Certainly, it first fusible leads
Body 8 can also only include the metal layer (low melting point conductor layer 8a or high-melting-point conductor layer 8b) of single fusing point.First fusible conductor 8
Both 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
It is formed current path (the electric current road row that electric current Ic1 and electric current Id1 as shown in Figure 1A are flowed through).Flux material 91 is configured hollow
Protrusion 19d between the first fusible conductor 8.
Specifically, the both ends of the first fusible conductor 8 are electrically connected the first termination electrode 11 and second end electricity respectively
Pole 21, and the method being generally electrically connected is: it fusible is led between the first fusible conductor 8 and the first termination electrode 11 and first
Solder 9 is inserted between body 8 and the second termination electrode 21 achievees the purpose that electrical connection after hot wind reflow.Figure is please referred to below
1D, Fig. 1 D are the partial enlargement diagram of the region A of protection element 888 shown by Figure 1B.The present embodiment is especially in first end
On electrode 11 and the second termination electrode 21, each three bossy body 11c and 21c (however, the present invention is not limited thereto) are made respectively, and
One fusible conductor 8, bossy body 11c, solder 9 is inserted between 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 wind reflow, can apply on the first fusible conductor 8
Weight or external force have multiple bossy body 11c and 21c by oneself due to each on the first termination electrode 11 and the second termination electrode 21, and first
At a distance from fusible conductor 8 can remain fixed between the first termination electrode 11 or the second termination electrode 21.In this way, which solder 9 can
Be filled between the first fusible conductor 8 and the first termination electrode 11 or the second termination electrode 21 really, solder 9 will not be because by external force
Effect and overflow goes out, therefore can avoid that reflow is bad or electrical connection undesirable happens.
[insulation crust body, protrusion, hollow protrusion]
It is good that heat resistance can be used in the material of insulation crust body 19 (including protrusion 19c and hollow protrusion 19d)
Engineering plastics or using polyphenylene sulfide as made by the material of principal component.
[termination electrode and bossy body]
The material of all termination electrodes of the present invention and bossy body include using in gold, silver, copper, palladium, platinum etc. it is any as
The metal of sheet made by material of the combination of main composition or part thereof as principal component or strip.In addition, being exposed at insulation
The surface of part termination electrode outside outer housing 19 can plate one or more layers less oxidizable or more stable metal material such as:
Nickel, tin, gold etc..Bossy body 11c and 21c the punching press of termination electrode 11 and 12 can also be made with mold.
[fusible conductor]
The material of low melting point conductor layer 8a in first fusible conductor 8 includes to have lead or without lead metal using tin as principal component
Alloy, the material of the high-melting-point conductor layer 8b in the first fusible conductor 8 include with the parts such as silver, copper, tin, bismuth, indium, zinc, aluminium group
At alloy.All fusible conductors of the invention are all suitable for above-mentioned explanation.
[solder 9]
The material of solder 9 includes to have lead or lead-free composition using tin as principal component.All solders of the invention are all suitable for
Above-mentioned explanation.
[flux material 91]
Flux material 91 is characterized in that its fusing point or liquidus point are lower than the fusing point or liquidus point of the first fusible conductor 8, 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, its main function are to prevent fusible conductor (such as: the first fusible conductor 8), electrode (such as: the second termination electrode 21)
Surface oxidation, and when flux material 91 and fusible conductor (such as: the first fusible conductor 8) are heated, flux material 91 can be than can
Molten conductor (such as: the first fusible conductor 8) early melting or early liquefaction, facilitate the molten of fusible conductor (such as: the first fusible conductor 8)
Melt, the wettability (Wetting) and adsorption capacity of electrode surface can also be promoted, allow the fusible conductor melted later rapidly
Diffusion is attached on electrode (such as: the second termination electrode 21).All flux materials of the invention are all suitable for above-mentioned explanation.
[action specification of protection element 888]
When the electric current lower than load current value flow through the first fusible conductor 8 (such as: electric current Ic1 is flowed from the first termination electrode 11
Enter, then is 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 act, and maintain protection element 888
Reset condition.When the electric current (electric current Ic1 or electric current Id1) for being 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 that can first liquefy or gasify and removal 8 table of the first fusible conductor
Oxide layer on face, then, the low melting point conductor layer 8a in the first fusible conductor 8 first can be melted or be liquefied, and then, high-melting-point is led
Body layer 8b melting, the last fusing completely of first fusible conductor 8, wherein the fusing position of the first fusible conductor 8 is located at first end electricity
Middle section (please referring to shown by Fig. 1 E) between pole 11 and the second termination electrode 12.
Specifically, the surface of the first fusible conductor 8 can increase at any time, and generate oxide layer, this oxidation
Layer will increase the melting or fusing time of the first fusible conductor 8, and flux material 91 then assists in removing 8 table of the first fusible conductor
Oxide layer on face can shorten the melting or fusing time of the first fusible conductor 8.In addition, the fusing point of the first fusible conductor 8 is lower,
Then the time of 888 protection act of protection element 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 wind reflow oven, so the fusing point of high-melting-point conductor layer 8b necessarily is greater than the maximum temperature in back welding process, ability
Ensure that the first fusible conductor 8 will not assemble in processing procedure to fuse.The fusing point of low melting point conductor layer 8a is lower than high-melting-point conductor layer 8b's
Fusing point, it helps shorten the time of the first fusible conductor 8 fusing.
In addition, the protection element 888 of the present embodiment also may not include: hollow protrusion 19d, flux material 91, protrusion
19c and multiple bossy body 11c and 21c etc., and will not influence the defencive function or effect of protection element 888, designer can
With according to different actual demands (such as: size, the thickness of the first fusible conductor 8 and the length of termination electrode of insulation crust body 19
The designs such as degree, cost consider) in structure to decide whether to be added protection element 888 or other protection elements of the invention,
Reach preferable combination.Certainly, optimal combination is hollow protrusion 19d, flux material 91, protrusion 19c and multiple
Bossy body 11c and 21c etc. are included in the structure of protection element 888, can so promote the stabilization of 888 structure of protection element
Degree.
[variation]
Fig. 1 F is shown as the diagrammatic cross-section of protection element 888a of second embodiment of the invention a kind of.It please also refer to figure
1A and Fig. 1 F, the protection element 888a of the present embodiment includes: 19, two termination electrodes of insulation crust body and the first fusible conductor 8.
Insulation crust body 19 includes insulation crust body matrix 19a and insulation crust body upper cover 19b.Insulation crust body matrix 19a has two
A protrusion 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 is 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 configure (float) in exhausted
In edge outer housing 19 or extend in insulation crust body 19.One of support section first end of above-mentioned two protrusion 19c
Electrode 11, another second termination electrode of support section 21 of above-mentioned two protrusion 19c, and the height of the first termination electrode 11 is higher than
Second termination electrode 21 (may be designed as the height of the first termination electrode 11 certainly lower than the second termination electrode 21).More specifically,
There is the first clearance G P1, and the second termination electrode 21 between the second end of first termination electrode 11 and the pedestal 19n of insulation crust body 19
Second end and insulation crust body 19 pedestal 19n between have the second clearance G P2, and the first clearance G P1 be greater 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 configures in insulation crust body 19.The both ends of first fusible conductor 8 are electrically connected first respectively
Termination electrode 11 and the second termination electrode 21, between the first termination electrode 11 and the second termination electrode 21 formed current path (such as electricity
The current path that stream Ic1, electric current Id1 are flowed through.
Please also refer to Figure 1B and Fig. 1 F, the protection element 888 of protection element 888a and Figure 1B of Fig. 1 F embodiment are similar,
The main difference between them is that: the height of the first termination electrode 11 of Fig. 1 F embodiment is higher than the height of the second termination electrode 21
(i.e. the first clearance G P1 is greater than the second clearance G P2), therefore the height at the both ends of the first fusible conductor 8 has drop, and first is fusible
The intermediate region of conductor 8 has the variation of a slope, and the time that this height fall facilitates the fusing of the first fusible conductor 8 shortens again
It is some.In addition, the protection element 888a of Fig. 1 F embodiment is without protrusion 19d and flux material 91 hollow shown in Figure 1B.Figure
The running of the protection element 888a of 1F embodiment can join the related description of the protection element 888 of above-mentioned Figure 1B, and details are not described herein.
[protection element 888b, 888c of tool multi-current-path]
Fig. 2A is shown as the schematic top plan view of protection element 888b of third embodiment of the invention a kind of.It please also refer to figure
2A and Fig. 1 C, the protection element 888 of protection element 888b and Fig. 1 C of the present embodiment are similar, and only the two main difference is in
In: the protection element 888b of the present embodiment also includes third termination electrode 12.One end electrical connection first of third termination electrode 12 can
(variation: one end of third termination electrode 12 can also be electrically connected between the first termination electrode 11 and second for the central area of molten conductor 8
Any region of the first fusible conductor 8 between termination electrode 21), in this way, the first termination electrode 11, the second termination electrode 21 and
Multiple current paths can be formed between third termination electrode 12.
Fig. 2 B is shown as the schematic top plan view of protection element 888c of fourth embodiment of the invention a kind of.Fig. 6 is shown as this
Inventive embodiments it is a kind of can charge-discharge battery packet 588 circuit diagram, wherein can charge-discharge battery packet 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 the protection element 888 of Fig. 1 C, the main difference between them is that: the protection element 888c of the present embodiment also includes
Two fusible conductors 81 and third termination electrode 12.Second fusible conductor 81 configures in insulation crust body 19.Second fusible conductor 81
One end be electrically connected third termination electrode 12, the other end of the second fusible conductor 81 is electrically connected the second termination electrode 21.First end
Two current paths (such as electric current shown in fig. 6 can be formed between electrode 11, the second termination electrode 21 and third termination 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 third end electricity
Current path (such as electric current Ic1 shown in fig. 6 and the electricity of at least two different rated current can be formed between 12 termination electrode of pole
The current path that stream Id2 is flowed through).
Third termination electrode 12 is supported through insulation crust body 19 and by insulation crust body 19.Wherein the one of third termination electrode 12
Hold (first end) configuration (exposed) in outside insulation crust body 19, the other end (second end) configures (float) in insulation crust body 19
Or it extends in insulation crust body 19.More specifically, the pedestal of the second end of third termination electrode 12 and insulation crust body 19
There is gap between (the pedestal 19n for please referring to Figure 1B), produced in this way, can reduce when high current flows through third termination electrode 12
Raw temperature rises and influences the temperature of insulation crust body 19.The second end of the third termination electrode 12 of certain the present embodiment can also be direct
(i.e. very close to each other) is supported by the pedestal of insulation crust body 19.In addition to this, since third termination electrode 12 is not printed on insulation
On outer housing 19, designer can adjust the thickness and density of third termination electrode 12 according to practical application or design requirement, with drop
The internal resistance of low third termination electrode 12.It generates high temperature in this way, can avoid high current and flow through third termination electrode 12 and makes third 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 packet 588a circuit diagram, it includes of the invention
The equivalent circuit diagram of protection element 889,889a, 889b, 889c, 889d.Fig. 3 A is 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
The protection element 888 of 1B is similar, the main difference between them is that: the protection element 889 of the present embodiment also includes: insulation base
Plate 10, the 4th termination electrode 31 (as shown in fig. 7, the structure of the 4th termination electrode 31 can refer to Fig. 4 B by explanation later), heater
7, insulating layer 16 and flux material 91.
Insulating substrate 10 can be supported by the protrusion 19c of insulation crust body 19 and (be may be designed as certainly by insulation crust
The pedestal of body 19 is supported).Heater 7 configures on the upper surface 10a of insulating substrate 10, and is configured at the second termination electrode 21
The lower section of second end.Insulating layer 16 configurable (or cladding) is on heater 7.Two ends (first end and second end) of heater 7
It can be electrically connected heater electrode 7a and 7b (as shown in Figure 7) respectively.Heater electrode 7a is configured on the insulating substrate 10, and is matched
It sets between insulating layer 16, the second termination electrode 21 and the first end of 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
(it can refer to Fig. 4 B later by explanation) 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.In addition, the second end of second termination electrode 21 of the present embodiment it is also not necessary to or do not have
Protrusion 19c carrys out reinforcing support or generates gap with pedestal, carrys out reinforcing support by heater 7 or generates gap, also can reach
Same effect.
Flux material 91 is configurable on 8 surface of the first fusible conductor.Specifically, flux material 91 can also match
(Fig. 3 A is not shown) is set on the second termination electrode 21.When 7 adstante febre of heater, flux material 91 facilitates the first fusible conductor
8 the first fusible conductor 8 for melting and helping to be melted is adsorbed on the second termination electrode 21.
Fig. 3 C is shown as the diagrammatic cross-section of protection element 889a of sixth embodiment of the invention a kind of.It please also refer to figure
3C, Fig. 3 A and Fig. 7, the protection element 889 of protection element 889a and Fig. 3 A of the present embodiment are similar, both only main difference it
Be in: the heater 7 of the protection element 889a of the present embodiment is configured at (class between heater electrode 7a and heater electrode 7b
Like sandwich structure).More specifically, heater electrode 7a configuration 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 configuration
Between the second end and the 4th termination electrode 31 of heater 7, 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 protrusion 19c of insulation crust body 19 and (can certainly be not required to
Want the protrusion 19c of insulation crust body 19).Specifically, the protection element 889a of the present embodiment is not needed using figure
Insulating substrate 10 shown in 3A and insulating layer 16.
Fig. 3 D is shown as the diagrammatic cross-section of protection element 889b of seventh embodiment of the invention a kind of.It please also refer to figure
3D, Fig. 3 A and Fig. 7, the protection element 889 of protection element 889b and Fig. 3 A of the present embodiment are similar, both only main difference it
The heater 7 being in: the protection element 889b of the present embodiment configures in insulating substrate 10.More specifically, heater
Electrode 7a is configurable between the second termination electrode 21 and insulating substrate 10, and wherein the first end of heater 7 can be via insulating 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 wherein the second end of 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: the protection element 889b of the present embodiment does not need insulating layer 16 shown in Fig. 3 A.
Fig. 3 E is shown as the diagrammatic cross-section of protection element 889c of eighth embodiment of the invention a kind of.It please also refer to figure
3E, Fig. 3 A and Fig. 7, the protection element 889 of protection element 889c and Fig. 3 A of the present embodiment are similar, both only main difference it
Be in: the heater 7 of the protection element 889c of the present embodiment is configured at the lower surface 10b (second surface) of insulating substrate 10
On.More specifically, upper surface 10a (first surface) of the hot body electrode 7a configuration in the second termination electrode 21 and insulating 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 insulating substrate 10 extremely
Lack electrode or conductive through hole (not shown) and heater electrode 7a in one and is electrically connected the second termination electrode 21.Heater electrode
7b is configured between the second end and the 4th termination electrode 31 of heater 7, 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 that the protection element 889c of the present embodiment is not needed shown in Fig. 3 A
Insulating layer 16.
Fig. 3 F is shown as the diagrammatic cross-section of protection element 889d of ninth embodiment of the invention a kind of.It please also refer to figure
3F, Fig. 3 A and Fig. 7, the protection element 889 of protection element 889d and Fig. 3 A of the present embodiment are similar, both only main difference it
Be in: the protection element 889d of the present embodiment further includes ennation electrode 21x.One end coupling second of ennation electrode 21x
Termination electrode 21, the other end of ennation electrode 21x couple the upper surface (first surface) of the first fusible conductor 8.Ennation electrode
The technical characteristic of 21x is: when 7 adstante febre of heater, the thermal energy that heater 7 can be generated via ennation electrode 21x rapidly
It is transferred to the upper surface of the first fusible conductor 8, so that the upper surface of the first fusible conductor 8 is extended body electrode 21x and heats, and first
It then (is led because the second termination electrode 21 coupling first is fusible by the heating of the second termination electrode 21 lower surface (second surface) of fusible conductor 8
The lower surface of body 8), in this way, which the upper surface and the lower surface of the first fusible conductor 8 can be heated, led so that shortening first is fusible
The time that body 8 is blown.It is noted that the ennation electrode 21x of the protection element 889d of Fig. 3 F embodiment 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 fever
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 achievees the purpose that electrical connection after hot wind reflow.Fig. 3 B is please referred to, Fig. 3 B is protection element 889
The partial enlargement diagram of shown region B, 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.It, can be on the second termination electrode 21 or first when through the processing procedure of hot wind 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
At a distance from can remaining fixed between the second termination electrode 21, solder 9 can be filled in heater electrode 7a and second end really
Between electrode 21, will not overflow goes out due to external force, cause the bad of reflow or electrical connection it is undesirable happen, 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.In addition, it is noted that having in all embodiments in the present invention comprising the 4th termination electrode 31 and heater electricity
The embodiment of pole 7b, the mode and structure of the 4th termination electrode 31 and heater electrode 7b electrical connection, 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 repeats no more.
[insulating substrate 10]
Specifically, insulating substrate 10 is the structure that can be single layer structure or multilayer.The material category of insulating substrate 10
May include organic system substrate or glass epoxy substrate (such as: FR4 or FR5) or inorganic system's substrate or ceramic substrate (such as: ltcc substrate
Or HTCC substrate) etc., it is preferred that ceramic substrate or low-temperature co-fired ceramics (LTCC) substrate, the material of substrate includes inorganic ceramic
Material, low-temperature co-fired ceramics (LTCC), glass ceramics, glass powder, glass, epoxy resin, aluminium 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 low-temperature co-fired ceramics (LTCC) substrate is the insulating substrate storehouse by multilayer, it is calcined
Or with other component cofirings in insulating substrate.
[heater 7 and heater electrode 7a, 7b]
Heater 7 is the relatively high element of resistance value (compared to the first fusible conductor 8), and there is electric current to pass through will
Send out thermal property, 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 in which fraction compositions.The function that heater 7 can bear
Rate or the thermal energy that can be generated resistance value with itself or impedance value are related.About 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 paste, is then printed on the insulating substrate 10 or absolutely
In edge substrate 10, calcining or cofiring are carried out.
Heater electrode 7a, 7b can be single-layer metal or multi-layer metal structure, the material of 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, the material of heater electrode 7a, 7b can be mixed by the mode of screen painting
The slurry for synthesizing paste, is then imprinted on the upper surface 10a of insulating substrate 10, wherein heater electrode 7a optionally may be used
To further extend on insulating layer 16, insulating substrate 10 is extended to via through-hole connection alternatively, being imprinted in insulating substrate 10
On the 10a of upper surface, alternatively, being imprinted on the lower surface 10b of insulating substrate 10, insulating substrate 10 is extended to via through-hole connection
Upper surface 10a on, finally carry out calcining or cofiring.
Specifically, all heaters 7 of the present invention and heater electrode 7a, 7b can be by the sides of screen painting
Formula prints the material and figure of heater 7 and heater electrode 7a, 7b on the insulating substrate 10 or in insulating substrate, heater
Electrode 7a, 7b can connect the surface for extending to insulating substrate 10 via through-hole, to be electrically connected corresponding different termination electrodes,
The similar practice all can be used in the relevant all embodiments of the present invention, and being described later repeats no more.
[insulating layer 16]
Only just needed when on the upper surface 10a of insulating substrate 10 using (such as Fig. 3 A of insulating layer 16 in the configuration of heater 7
It is shown).When the configuration of heater 7 in insulating substrate 10 (such as scheme on the lower surface 10b of insulating substrate 10 by (such as Fig. 3 D) or configuration
When 3E), there is no need to the insulating layers 16 on the upper surface 10a configured in insulating substrate 10.The material of insulating layer 16 may include ring
Oxygen system, acrylic acid series, Polyester, glass or using SiO2 as the inorganic material of principal component.Insulating layer 16 can also be by screen painting
Mode, be imprinted on heater 7 and insulating substrate 10, carry out calcining or cofiring.
[action specification of protection element 889]
When be higher than load current value electric current Ic1 or electric current Id1 flow through the first fusible conductor 8 when, please refer to Fig. 1 E and
Aforementioned [action specification of protection element 888].
Protection element 889 described in 5th embodiment, protection act specifically: please refer to Fig. 3 G and figure
3B, when 7 heating power of heater, heater 7 generate thermal energy can via heater electrode 7a, bossy body 21c, solder 9 with
And second termination electrode 21 conduction be radiated the first fusible conductor 8, especially the part first Chong Die with the second termination electrode 21 can
Molten conductor 8.When the fusing point of the temperature of the first fusible conductor 8 of part accumulation to the first fusible conductor 8, (such as: high-melting-point is led
The fusing point of body layer), which starts to melt, and starts to expand adsorption area, makes the first of partial melting can
Molten conductor 8 is disconnected with the first fusible conductor 8 not melted, completes 8 fusing of the first fusible conductor, while being also disconnected first
Current path between termination electrode 11 and the second termination electrode 21.
[protection element 885 for having other recording function]
Fig. 4 A is shown as a kind of diagrammatic cross-section of protection element 885 of tenth embodiment of the invention.Fig. 4 B is 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
The circuit diagram of charge-discharge battery packet 588c, wherein can charge-discharge battery packet 588c include protection element 885 of the invention (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 the protection element 889 of Fig. 3 A, the main difference between them is that: the protection element 885 of the present embodiment is also wrapped
It includes: the 5th termination electrode 32, channel T and flux material 91.Channel T configuration the first fusible conductor 8 and the 5th termination electrode 32 it
Between, and there is clearance G P3 (third space) between channel T and the 5th termination electrode 32.Heater electrode 7a is extended in the T of channel.
The configuration of flux material 91 is on the 5th termination electrode 32 and configuration is in the T of channel.Specifically, the 5th termination electrode 32 with
The distance between heater electrode 7a or flux material 91 in the T of channel more better, must consider the problems of proof voltage certainly.
In addition, flux material 91 of the configuration in the T of channel can also should not, the first fusible conductor of part 8 of melting still can because capillary with again
Power effect, and be attracted on the 5th termination electrode 32, it will not influence the defencive function of protection element 885.Certainly, it is preferred that
If there is the configuration of flux material 91 in the T of channel, the heater electrode 7a in the T of channel can be wet, so that be melted first
Fusible conductor 8 can rapidly move and shorten the fusing time of the first fusible conductor 8.
[action specification of protection element 885]
When the electric current Ic1 or Id1 that are higher than load current value flow through the first fusible conductor 8, Fig. 1 E and aforementioned is please referred to
[action specification of protection element 888].
Specifically, the first fusible conductor 8 of the protection element of the present embodiment 885 and the 5th termination electrode 32 it
Between configuration there are three channel T (however, the present invention is not limited thereto), channel T preferably extends on the thickness direction of insulating substrate 10
Three through holes, and heater 7, insulating layer 16 and the second termination electrode 21 also have corresponding through hole, formed first
Channel T (certainly, a channel T or through hole can also with) between fusible conductor 8 and the 5th termination electrode 32, the quantity of channel T
The more, then when 7 heating power of heater, the first fusible conductor of part 8 being melted more is easy to be inhaled because of capillarity
It leads in the T of channel, 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 is fallen because of the relationship of gravity on the 5th termination electrode 32 and filling clearance G P3 and (please refer to figure
4C), short circuit between the second termination electrode 21 and the 5th termination electrode 32 is caused, between the second termination electrode 21 and the 5th termination electrode 32
Current path is formed, in this way, the speed of the first fusible conductor 8 fusing can become faster, the time of fusing can shorten, 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,
It, can also be by current path (the i.e. road of electric current Ic1 and electric current Id1 of the second termination electrode 21 after the fusing of the first fusible conductor 8
Diameter) it switches 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 packet 588b circuit diagram, wherein can charge-discharge battery packet 588b include 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 the protection element 889d of Fig. 3 F, the main difference between them is that: the protection element 887 of the present embodiment is also comprising the
Two fusible conductors 81 and third termination electrode 12 (as shown in figure 8, the structure of third termination electrode 12 can refer to Fig. 1 F).Second fusible leads
Body 81 is configured in insulation crust body 19.One end of second fusible conductor 81 is electrically connected third termination electrode 12, and second fusible leads
The other end of body 81 through the second termination electrode 21 of ennation electrode 21x electrical connection (certainly can also be 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. the path of electric current Ic1 and the path of electric current Id2) is formed between termination electrode 21, third termination electrode 12,
Alternatively, at least two different rated current can be formed between the first termination electrode 11, the second termination electrode 21, third termination electrode 12
Current path (i.e. the path of electric current Ic1 and the path of electric current Id2).
When the electric current Ic1 or Id2 that are higher than load current value flow through the first fusible conductor 8 or the second fusible conductor 81, ask
With reference to Fig. 1 E and aforementioned [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 successively blown with 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 refering to details are not described herein.
Specifically: the first fusible conductor 8 and the second fusible conductor 81 can choose the material of different melting points, or
It selects the material of identical fusing point but there is different sectional areas, can so allow the protection element 887 of the present embodiment that there are different volumes
Two current paths of constant current.In addition, 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, the thickness design of the first fusible conductor 8 and the second fusible conductor 81 (can also not shown at not identical
Out), so when 7 heating power of heater, can control in 81 the two of the first fusible conductor 8 and the second fusible conductor thickness compared with
Thin person first fuses, and for thickness compared with fusing after thick one, reaching can special protection function or purpose needed for charge-discharge battery packet 588b.
In addition, the protection element 887 of the present embodiment also may include 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 fusing of the second fusible conductor 81
Time, related description can refer to twelveth embodiment of the invention.
[protection element 886]
Figure 10 B is shown as a kind of diagrammatic cross-section of protection element 886 of twelveth embodiment of the invention, and Figure 10 A is shown
For a kind of equivalent circuit diagram of protection element 886 of twelveth embodiment of the invention.It please also refer to Figure 10 A and Figure 10 B, 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
It shell 19 and is supported by insulation crust body 19.First termination electrode 11, the second termination electrode 21, the 4th termination electrode 31 wherein one end match
(exposed) is set in outside insulation crust body 19, the first termination electrode 11, the other end configuration (float) of the second termination electrode 21 are outer in insulation
In shell 19, the another two end configuration (float) of the 4th termination electrode 31 is in insulation crust body 19.The configuration of fusible conductor 8 is outer in insulation
In shell 19.The both ends of fusible conductor 8 are electrically connected the first termination electrode 11 and the second termination electrode 21 respectively, in the first termination electrode
11 and second form current path (i.e. the current path of electric current Ic1 and electric current Id1) between termination electrode 21.Above-mentioned multiple fevers
Body 7 includes the first heater 71 and the second heater 72.First heater 71 is configured at 21 liang of fusible conductor 8 and the second termination electrode
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 of 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 the first surface 8-1 to fusible conductor 8 heat, and the second heater 72 can be via
Two termination electrodes 21 heat (because of the second of the second termination electrode 21 coupling fusible conductor 8 the second surface 8-2 of fusible conductor 8
Surface).In this way, 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: the rated current of 50A or 100A or more) using upper, 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 fastly.
[the first heater 71, the second heater 72, fever electrode 7a, 7b]
The first heater 71, the second heater 72 of the protection element 888 of twelveth embodiment of the invention are with chip
Heating material is pressed into the sheet or chip of any shape by the mode of mode or sandwich, is then applied on two sides or both ends
Upper electrode material or conductive material are sintered, and being formed intermediate is the first heater 71 or the second heater 72, two sides or two
End is heater electrode 7a, 7b.First heater 71 is configured on the fusible conductor 8, and one end of the first heater 71 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 connection 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 via heater electricity
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 one insulating layer of heater 71, the coating of 72 ontologies or cladding, the characteristic of its proof voltage can be promoted.In addition,
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 aforementioned fusible conductor 8,
It is connected by solder 9, please voluntarily refering to details are not described herein.Specifically to be that any industry is known have heat generation characteristic
Chip-shaped or wafer type resistance, be suitable for heater 71,72 of the invention.
In addition, specifically be all embodiments of the invention, the first heater 71 therein, the second heater 72 its
Resistance value or maximum rated voltage may be the same or different, it is preferred that the resistance value or maximum amount of the second heater 72
Constant voltage is higher than the resistance value or maximum rated voltage of the first heater 71.In addition, the present invention may also include following deformation implementation
Example: the protection element 886 of Figure 10 B embodiment of the present invention only can also be arranged the first heater 71 and be not provided with the second heater 72；
Either, the protection element 886 of Figure 10 B embodiment of the present invention only can also be arranged the second heater 72 and be not provided with the first heater
71, end is depending on practical application or design requirement.
In addition, specifically be all termination electrode of the present invention, thickness and density are both greater than heater electrode 7a, 7b
Thickness and density.It is the second termination electrode 21 that one of main feature of the present embodiment, which is responsible for the fusible conductor 8 that absorption is 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
It melts and powers off and stop fever, 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 the diagrammatic cross-section of protection element 886a of thriteenth embodiment of the invention a kind of, equivalent circuit
Figure 10 A.It please also refer to Figure 11 and Figure 10 A, the protection element 886a of the present embodiment includes: insulation crust body 19, Duo Geduan
Electrode, 8, two insulating substrates 10 of fusible conductor and two heaters 7.Above-mentioned multiple termination electrodes include 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.
Each of first termination electrode 11, the second termination electrode 21, the 4th termination electrode 31 termination electrode wherein one end configuration (exposed) in
Outside insulation crust body 19, the other end of each of the first termination electrode 11, second termination electrode 21 termination electrode 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 configures in insulation crust body 19.The both ends of fusible conductor 8 are electrically connected the first termination electrode 11 respectively
With the second termination electrode 21, between the first termination electrode 11 and the second termination electrode 21 formed current path (i.e. electric current Ic1, electric current
The path of Id1).In above-mentioned two insulating substrates 10, one of configuration of insulating substrate 10 is on fusible conductor 8, another is absolutely
Edge substrate 10 configures 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 insulating substrate 10, and it is configured at the top of both fusible conductor 8 and the second termination electrode 21 overlapping region.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 layer 16 on the first heater 71.Second heater 72 is configured another
In one insulating substrate 10, and it is configured at the lower section of 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.
Please also refer to Figure 10 B and Figure 11, the protection element 886 of protection element 886a and Figure 10 B of the present embodiment are similar,
Only be in place of two main differences: the protection element 886a of the present embodiment also includes two insulating substrates 10, one of them is absolutely
Edge substrate 10 is configured on fusible conductor 8, another insulating substrate 10 is configured on the 4th termination electrode 31, and the first heater 71
It is configured on one of insulating substrate 10, and the second heater 72 is configured in another insulating substrate 10.12nd implements
The first heater 71, the second heater 72 of the protection element 886 of example are made of with chip structure, and the protection of the present embodiment is first
The first heater 71 of part 886a is imprinted on one of insulating substrate 10 in a manner of wire mark, and the second heater 72 is then with net
The mode of print is imprinted in the insulating substrate 10 of another multilayered structure.The heater of first heater 71 and the second heater 72 electricity
Pole 7a, 7b, can be by conductive through hole (not shown) in the side of insulating substrate 10 or the export heater electricity in insulating substrate 10
Pole 7a, 7b are to the different surface of insulating substrate 10 (such as: upper surface and lower surface), using as being electrically connected fusible conductor 8, second
Termination electrode 21 and the 4th termination electrode 31 are used.Specifically, the first heater 71, the second heater 72 can be used arbitrarily
Insulation is configured on insulating 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, there is no limit can only select a kind of or identical structure.In addition, on each insulating substrate 10 or insulating
In substrate 10, can also there are multiple heaters to be connected in parallel with each other (not shown), the maximum rated voltage of Lai Zengjia heater or
Higher thermal energy.
[can charge-discharge battery packet 588,588a, 588b, 588c]
Fig. 6 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery packet 588 circuit diagram.It can charge-discharge battery packet
588 include: cell device group 4, charge-discharge control circuit 2, detection control circuit 5 and protection element 888c.Cell device group 4
There are four cell device 4-1,4-2,4-3,4-4 (however, the present invention is not limited theretos) for tool.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 4-1,4-2 in cell device group 4,4-3,
The voltage value or temperature value of 4-4, and output signal to charge-discharge control circuit 2.The termination electrode 11,21,12 of protection element 888c
It is connected in series between cell device group 4 and charge-discharge control circuit 2, forms different charge and discharge paths (i.e. electric current Ic1 and electricity
Flow the path of Id2).The present embodiment can charge-discharge control circuit 2 in charge-discharge battery packet 588, can according to it is external be to fill
Electric installation 1 or electronic device 1 and the signal that is exported of detection control circuit 5 open and close the electric currents of charge and discharge.Work as height
It flows through the first fusible conductor 8 in the electric current Ic1 of load current value or flows through second higher than the electric current Id2 of load current value and fusible lead
When body 81, the first fusible conductor 8 or the second fusible conductor 81 can fuse, to disconnect the road of charging current Ic1 or discharge current Id2
Diameter, with reach protection cell device group 4 or can charge-discharge battery packet 588 excess current protective function.
[variation]
Fig. 6 can protection element 888c in charge-discharge battery packet 588 also with the protection in other embodiments of the invention
Element 888 or protection element 888a are substituted, the main difference of the two are as follows: the charging current Ic1 of protection element 888 or 888a 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 as the load current value of discharge current Id1.
Fig. 7 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery packet 588a circuit diagram.It can charge-discharge battery packet
588a include: cell device group 4, switching 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 tool there are four cell device 4-1,4-2,4-3,
4-4.The original state of switching circuit 6 is open circuit, can be switched to according to the signal that is exported of detection 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
The voltage value or temperature value of each cell device 4-1,4-2,4-3,4-4 in pond element group 4, to output signal to charge and discharge control
Circuit 2 and switching circuit 6.The termination electrode 11,21 of protection element 889 or 889a or 889b or 889c or 889d are connected in series in electricity
Between pond element group 4 and charge-discharge control circuit 2, formed in charge and discharge path (i.e. the path of electric current Ic1 and electric current Id1).Current limliting
Circuit F1 is connected in series between heater 7 and switching circuit 6.
Fig. 8 be shown as the embodiment of the present invention it is a kind of can charge-discharge battery packet 588b circuit diagram.Please also refer to Fig. 8 with
And Fig. 7, the present embodiment can charge-discharge battery packet 588b and Fig. 7 can charge-discharge battery packet 588a it is similar, only two it is main poor
Different place is: the present embodiment can the protection element in charge-discharge battery packet 588b be with the protection element 887 in the present invention
It can protection element in charge-discharge battery packet 588a come replace Fig. 7.Protection element 887 has two current paths, and one is
Charging current path (i.e. the path of electric current Ic1), another discharge current path (i.e. the path of electric current Id1), so that this implementation
Example can charge-discharge battery packet 588b can be used different charging and discharging currents values come to cell device group 4 carry out charge and discharge.Protection
Element 887 is because having the first fusible conductor 8 and the second fusible conductor 81, so also can provide the overcurrent of different charging and discharging currents
Defencive function.In addition, when detection control circuit 5 detects that any one of cell device 4-1,4-2,4-3,4-4 are abnormal
When (such as: overcharging or excess temperature), then can sending signal to switching circuit 6, switching circuit 6 is switched into short-circuit condition or conducting shape
State causes electric current I7 that can flow through heater 7.Heater 7 fuse because of heating power the first fusible conductor 8 or fusing it is first fusible
Conductor 8 and the second fusible conductor 81, to disconnect charging current Ic1 or disconnect charging current Ic1 and discharge current Id2, reaching can
Charge-discharge battery packet 588b overcharge or the function of overvoltage or overheat protector.In addition, working as the voltage being connected across between heater 7 just
The resistance value of Chang Shi, current-limiting circuit F1 are very low, but when the voltage being connected across between heater 7 is more than voltage rating,
Current-limiting circuit F1 resistance value can increase, and to limit the electric current by heater 7 within load current value, and reach protection fever
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 packet 588c circuit diagram.It can charge-discharge battery packet
588c include: cell device group 4a and 4b, switching circuit 6a and 6b, charge-discharge control circuit 2, detect control circuit 5a and 5b with
And protection element 885a and 885b.There are two cell device 4-1 and 4-2 for cell device group 4a tool, and cell device group 4b has
Two cell devices 4-3 and 4-4.The original state of switching circuit 6a and 6b are open circuit, can make to 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 voltage value 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 switching circuit 6a.Similarly, detection control circuit 5b can detect each cell device in cell device group 4b
The voltage value or temperature value of 4-3 and 4-4, and output signal to charge-discharge control circuit 2 and switching circuit 6b.Protection element 885a
Termination electrode 11,21 be connected in series between cell device group 4a and charge-discharge control circuit 2 respectively, and protection element 885b
Termination electrode 21,11 is connected in series in respectively between cell device group 4a and 4b, to form charge and discharge path (i.e. electric current Ic1 and electricity
Flow the path of Id1).Switching circuit 6a is connected in series in the heater 7 of protection element 885a and the ground terminal of charge-discharge control circuit 2
Between G, and switching circuit 6b be connected in series in protection element 885b heater 7 and charge-discharge control circuit 2 ground terminal G it
Between.The termination electrode 32 of protection element 885a is electrically connected to the termination electrode 21 of protection element 885b, and the end of protection element 885b
Electrode 32 is connected to the ground terminal G of charge-discharge control circuit 2.
The protection act of charge-discharge battery packet 588c [can explanation]
When be higher than load current value charging and discharging currents Ic1 and Id1 flow through protection element 885a the first fusible conductor 8 and
When the first fusible conductor 8 of protection element 885b, any of the above-described first fusible conductor 8 can generate heat and fuse, with reach can charge and discharge
The excess current protective function of electric battery pack 588c.In addition, any battery element 4-1,4-2 in cell device group 4a are overcharged
Or overvoltage or excess temperature, detection control circuit 5a can sending signal give switching circuit 6a, to flow a current through protection element 885a
Heater 7.The first fusible conductor 8 of fuse protection element 885a due to heating power of heater 7 of protection element 885a, and
Make the switch S short circuit between the second termination electrode 21 of protection element 885a and the 5th termination electrode 32 of protection element 885a, it will
Shift second termination electrode of (bypass) to protection element 885b in charging and discharging currents path (i.e. the path of electric current Ic1 and electric current Id1)
21, so that charge-discharge control circuit 2 is only carried out charge and discharge to cell device group 4b, without carrying out charge and discharge to cell device group 4a
Electricity.It can be the characteristics of charge-discharge battery packet 588c, when any of cell device group 4a and 4b are abnormal, not will cause
Entirely can charge-discharge battery packet 588c can not charge and discharge, only can bypass problematic cell device group, this technology or this protection member
Part 885a, 885b, can reduce can charge-discharge battery packet 588c waste, prior art can have any electricity in charge-discharge battery packet
Pond element is abnormal, after protection element movement, entirely can charge-discharge battery packet can not just carry out charge and discharge, 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 packet 588d circuit diagram.The present embodiment fills
Discharge battery packet 588d includes: cell device group 4, switching circuit 6, charge-discharge control circuit 2, detection control circuit 5, protection member
Part 886 or 886a and current-limiting circuit F1.There are four cell device 4-1,4-2,4-3,4-4 for the tool of cell device group 4.Switching circuit
6 original state is open circuit, and short-circuit condition or on state can be switched to according to input signal.Charge-discharge control circuit 2
To control the open and close of charging and discharging currents.Detection control circuit 5 can detect each battery member in cell device group 4 respectively
The voltage value or temperature value of part 4-1,4-2,4-3,4-4, and output signal to charge-discharge control circuit 2 and switching circuit 6.Protection
The termination electrode 11,21 of element 886 or 886a are connected in series between cell device group 4 and charge-discharge control circuit 2, are filled with being formed
Discharge path (i.e. the path of electric current Ic1 and electric current Id1).Current-limiting circuit F1 be connected in series in heater 7 and switching circuit 6 it
Between.
Specifically: the embodiment of the present invention can not include in charge-discharge battery packet 588a, 588b, 588d yet
Current-limiting circuit F1.Current circuit F1 main feature of rationing the power supply is: just in case the voltage for being connected across heater 7 is more than maximum rated voltage
When, current-limiting circuit F1 will limit the electric current for flowing through heater 7, to reach the function or fruit effect of protection heater 7.But if can fill
The cell device group 4 or input voltage of discharge battery packet 588a, 588b, 588d will not be abnormal voltage or not exceed highest
Voltage rating person can also be not required to current-limiting circuit F1.Certainly, if current-limiting circuit F1 is added, the effect of protection can preferably, but can increase
Add some manufactures or product cost.
The protection act of charge-discharge battery packet 588d [can explanation]
The present embodiment can in charge-discharge battery packet 588d, when external device is charging unit 1 or electronic device 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 packet 588d excess current protective function.In addition, when external device is charging unit 1, and
Detection control circuit 5 detects that any battery element 4-1,4-2,4-3,4-4 in cell device group 4 are overcharged or overvoltage
Or when excess temperature, detection control circuit 5 can sending signal to switching circuit 6, with switch original place in off state switching circuit 6 to
Conducting or short-circuit condition cause the first heater 71 and the at this point, electric current will flow through the first heater 71 and the second heater 72
Two heaters, 72 heating power, and the fusible conductor 8 that fuses (Figure 10 D, Figure 10 E are please referred to, the mode that fusible conductor 8 fuses includes:
Any of two shown by Figure 10 D, Figure 10 E), and make open circuit between the second termination electrode 21 and the first termination electrode 11, with
Charging and discharging currents path (i.e. the path of electric current Ic1 and electric current Id1) is disconnected or shut off, makes 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 packet 588d overvoltage or overheat protector function.
Specifically, the present embodiment can protection element 888d in charge-discharge battery packet 588, in cell device
Group 4 overcharges or overvoltage or when excess temperature, can fuse fusible conductor 8 and stop to 4 charge and discharge of cell device group, but electricity at this time
Pond element group 4 may be still in overcharging or overvoltage or over-temperature condition, protection element 888d of the invention are stilld provide via hair
The discharge path of hot body 71,72, so that cell device group 4 can be released and be overcharged or the state of overvoltage or excess temperature.
Although the present invention is disclosed as above with embodiment, however, it is not to limit the invention, any technical field
Middle tool usually intellectual, it is without departing from the spirit and scope of the present invention, therefore of the invention when can make a little change and retouching
Protection scope subject to be defined depending on claim.
Claims (17)
1. a kind of protection element characterized by comprising
Insulation crust body；
Multiple termination electrodes, include the first termination electrode and the second termination electrode, the multiple termination electrode run through the insulation crust body and
It being supported by the insulation crust body, it is external that the first end of each of the multiple termination electrode is configured at the insulation crust,
The second end of each of the multiple termination electrode is configured in the insulation crust body, wherein the institute of the second end electrode
Stating has the second gap between second end and the pedestal of the insulation crust body；
First fusible conductor is configured in the insulation crust body, and the both 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
Diameter；And
An at least heater is configured at the lower section of the second end of second termination electrode or is configured at described first and fusible leads
The top of both body and second termination electrode overlapping region, the first end electrical connection described second of an at least heater
The second end of termination electrode.
2. protection element according to claim 1, it is characterised in that:
The second end of first termination electrode is supported by the pedestal or protrusion of the insulation crust body；Either
The protection element further 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, which is characterized in that further include:
Multiple bossy bodies, the multiple bossy body are arranged respectively in first fusible conductor and the multiple termination electrode extremely
Between one few；And
Solder configures between at least one of 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 the second end of first termination electrode and the pedestal 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 variation of slope.
5. protection element according to claim 1, which is characterized in that the multiple termination electrode further include:
Third termination electrode, one end of the third termination electrode are electrically connected to first fusible conductor, cause the multiple end
Multiple current paths are formed between electrode.
6. protection element according to claim 1, which is characterized in that further include:
Second fusible conductor configures in the insulation crust body, and described in one end electrical connection of second fusible conductor
Second termination electrode,
Wherein the multiple termination electrode further includes third termination electrode, and one end of the third termination electrode is electrically connected to described second
The other end of fusible conductor causes to form multiple current paths between the multiple termination electrode.
7. protection element according to claim 6, it is characterised in that:
The multiple termination electrode further includes the 4th termination electrode, and the 4th termination electrode is electrically connected the of an at least heater
Two ends,
After an at least heater heating power, hot melt caused by an at least heater, which breaks, described first fusible is led
At least one of body and second fusible conductor.
8. protection element according to any one of claim 1 to 7, which is characterized in that second termination electrode couples institute
The second surface of the first fusible conductor is stated, wherein the protection element further include:
Ennation electrode, one end of the ennation electrode couple the 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, which is characterized in that the multiple termination electrode further includes
4th termination electrode, wherein the protection element further include:
Insulating substrate, wherein at least heater configuration is on the insulating substrate or configuration is in the insulating substrate,
Wherein the second end of an at least heater is electrically connected the 4th termination electrode.
10. protection element according to any one of claim 1 to 6, which is characterized in that the multiple termination electrode further includes
4th termination electrode, wherein the protection element further include:
First heater electrode configures between second termination electrode and the first end of an at least heater,
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 configures between at least second end of a heater and the 4th termination electrode, wherein institute
The second end for stating an at least heater is electrically connected the 4th termination electrode via the second heater electrode,
Wherein the second end electrode, the first heater electrode, an at least heater, the second heater electrode
Sandwich structure is formed with the 4th termination electrode.
11. protection element according to any one of claim 1 to 7, which is characterized in that further include:
5th termination electrode；And
An at least channel, at least channel 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 channel and the 5th termination electrode
First fusible conductor flows into an at least channel and the third space, causes 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, which is characterized in that second termination electrode couples institute
The second surface of the first fusible conductor is stated, wherein the multiple termination electrode further 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 to the first surface of first fusible conductor into
Row heating, and second heater is carried out via the second surface of second termination electrode to first fusible conductor
Heating.
13. protection element according to claim 12, which is characterized in that further include:
First insulating substrate, wherein first heater configures on first insulating substrate or first insulating substrate
It is interior；And
The second insulated substrate, wherein second heater configures on the second insulated substrate or the second insulated substrate
It is interior.
14. one kind can charge-discharge battery packet characterized by comprising
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 flowing through the charging and discharging currents in the protection element and being more than load current value and over-current condition occurs, the protection
Element disconnects described at least at least one of charging and discharging currents path.
15. according to claim 14 can charge-discharge battery packet, which is characterized in that further include:
Control circuit is detected, to detect the voltage or temperature of an at least cell device group；And
Charge-discharge control circuit, to the state and external device according to voltage detected by the detection control circuit
Type, 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 packet characterized by comprising
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；
Switching circuit is couple to the second end of an at least heater；And
Control circuit is detected, to detect the voltage or temperature of an at least cell device group, according to detected voltage
Or temperature and determine the state of the switching circuit,
If wherein at least the voltage of a cell device group or the temperature are normal, the switching circuit is maintained at breaking shape
State, if the voltage or temperature anomaly of an at least cell device group, the switching circuit are switched on state, cause
The protection element disconnects in at least charging and discharging currents path between an at least cell device group at least
One,
When flowing through the charging and discharging currents in the protection element and being more than load current value and over-current condition occurs, the protection
Element disconnects described at least at least one of charging and discharging currents path.
17. one kind can charge-discharge battery packet characterized by comprising
Multiple cell device groups, each of the multiple cell device group include at least one can charge and discharge cell device；
Multiple protection elements according to any one of claim 7,9,10,12, the multiple protection element and described more
A cell device group concatenation is to form charging and discharging currents path；
Multiple switch circuit, each of the multiple switching circuit are couple to one of them in the multiple protection element
The 4th termination electrode；And
Detect control circuit, to detect the voltage or temperature of the multiple cell device group, according to detected voltage or
Temperature and the state for each of determining the multiple switching circuit,
If wherein the voltage of the multiple cell device group or temperature are normal, the multiple switching circuit is maintained at breaking shape
State corresponds to the abnormal cell device if the voltage or temperature anomaly of any of the multiple cell device group
The switching circuit of group is switched on 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 extremely in the multiple cell device group,
When the charging and discharging currents for flowing through any of the multiple protection element are more than load current value and overcurrent shape occurs
When condition, the protection element that over-current condition occurs disconnects the charging and discharging currents path.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105100662 | 2016-01-11 | ||
| TW105100662 | 2016-01-11 | ||
| TW105101662 | 2016-01-20 | ||
| TW105101662 | 2016-01-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106960772A CN106960772A (en) | 2017-07-18 |
| CN106960772B true CN106960772B (en) | 2019-05-21 |
Family
ID=59480919
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611231714.9A Expired - Fee Related CN106960772B (en) | 2016-01-11 | 2016-12-28 | Protection element and chargeable and dischargeable battery pack |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106960772B (en) |
| TW (1) | TWI657473B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI690108B (en) * | 2017-04-06 | 2020-04-01 | 陳葆萱 | Protection element and battery pack |
| TWI811301B (en) * | 2019-02-13 | 2023-08-11 | 南韓商Ｌｇ新能源股份有限公司 | Battery module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4511449B2 (en) * | 2005-11-11 | 2010-07-28 | 三洋電機株式会社 | Protection element and battery pack provided with the protection element |
| CN104299868A (en) * | 2013-07-17 | 2015-01-21 | 乾坤科技股份有限公司 | Protective element and overcurrent and overvoltage protection module |
| CN104508784A (en) * | 2012-08-01 | 2015-04-08 | 迪睿合电子材料有限公司 | Protective element and battery pack |
| CN104835702A (en) * | 2014-02-10 | 2015-08-12 | 陈莎莉 | Composite protection element |
| CN104935024A (en) * | 2015-03-06 | 2015-09-23 | 广东欧珀移动通信有限公司 | Charging battery assembly and terminal device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM512203U (en) * | 2015-02-16 | 2015-11-11 | Sha-Li Chen | Composite protection device, protection circuit, chargeable and dischargeable battery pack |
| TWM512206U (en) * | 2015-04-07 | 2015-11-11 | Pao-Hsuan Chen | Protective element and battery pack |
-
2016
- 2016-12-28 CN CN201611231714.9A patent/CN106960772B/en not_active Expired - Fee Related
-
2017
- 2017-01-06 TW TW106100361A patent/TWI657473B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4511449B2 (en) * | 2005-11-11 | 2010-07-28 | 三洋電機株式会社 | Protection element and battery pack provided with the protection element |
| CN104508784A (en) * | 2012-08-01 | 2015-04-08 | 迪睿合电子材料有限公司 | Protective element and battery pack |
| CN104299868A (en) * | 2013-07-17 | 2015-01-21 | 乾坤科技股份有限公司 | Protective element and overcurrent and overvoltage protection module |
| CN104835702A (en) * | 2014-02-10 | 2015-08-12 | 陈莎莉 | Composite protection element |
| CN104935024A (en) * | 2015-03-06 | 2015-09-23 | 广东欧珀移动通信有限公司 | Charging battery assembly and terminal device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI657473B (en) | 2019-04-21 |
| TW201725599A (en) | 2017-07-16 |
| CN106960772A (en) | 2017-07-18 |
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