CN202405027U - Over-current protection element and battery protection circuit device - Google Patents
Over-current protection element and battery protection circuit device Download PDFInfo
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- CN202405027U CN202405027U CN2011204568932U CN201120456893U CN202405027U CN 202405027 U CN202405027 U CN 202405027U CN 2011204568932 U CN2011204568932 U CN 2011204568932U CN 201120456893 U CN201120456893 U CN 201120456893U CN 202405027 U CN202405027 U CN 202405027U
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Abstract
The utility model discloses an over-current protection element and a battery protection circuit device. The over-current protection element is arranged on the surface of a circuit board to be used for protecting a battery and comprises a resistance member, at least one insulating layer and a welding electrode layer. The resistance member has the positive temperature coefficient characteristic, the thickness of each insulating layer is at least 0.03mm, and the welding electrode layer is used for welding a strip connector to be electrically connected to the battery and at least 0.03mm in thickness. The insulating layers and the resistance member are arranged between the welding electrode layer and the circuit board in a stacked manner, and the circuit board, the resistance member and the welding electrode layer form a series circuit. Heat matters of the combination of the insulating layers and the welding electrode layer are sufficient to protect the resistance member from damage in welding of the strip connector.
Description
Technical field
The utility model relates to the circuit protection technology, and is particularly related to a kind of over-current protecting element and battery protection circuit device.
Background technology
Owing to have positive temperature coefficient (Positive Temperature Coefficient; PTC) resistance of the conducing composite material of characteristic has the sharp characteristic of reaction to variations in temperature, can be used as the material of current sensing element, has been widely used on over-current protecting element or the circuit element at present.Because the resistance of PTC conducing composite material under normal temperature can be kept utmost point low value, makes circuit or battery be able to normal operation.But when circuit or battery generation overcurrent (over-current) or when crossing the phenomenon of high temperature (over-temperature), its resistance value can be increased to a high resistance state (at least 10 moment
2More than the Ω), and excessive electric current is reduced, to reach the purpose of protection battery or circuit element.
Aspect battery protection, prior art is arranged at circuit board surface with over-current protecting element with the surface adhering mode, is made into protective circuit module (Protective Circuit Module; PCM), the external electrode spare that utilizes strip for example again forms the protective circuit loop with the positive and negative electrode that PCM is connected to battery.
For promoting the efficient on making, the over-current protecting element on the protective circuit module is attempted utilizing the mode of direct spot welding or reflow to connect external electrode spare.Yet with spot welding is example, and welding will cause local temperature sometimes up to more than 1500 ℃, and high temperature will damage the electrical characteristic of over-current protecting element.For in response to different over-current protecting element structure Design and prevent element infringement, needed badly in influencing and made effective breakthrough to high temperature caused.
The utility model content
The purpose of the utility model is to provide a kind of over-current protecting element and battery protection circuit device, is used to provide the needs of welding external electrode spare, the infringement when avoiding element because of welding.
The utility model provides a kind of over-current protecting element, is used to be arranged at a circuit board surface, and as the usefulness of battery protection, this over-current protecting element is the layered laminate structure, and comprises:
One resistive element has ptc characteristics;
At least one insulating barrier, thickness is at least 0.03mm; And
One welding electrode layer be used to weld a strip connector being electrically connected to battery, and its thickness is at least 0.03mm;
Wherein this at least one insulating barrier and resistive element are stacked between this welding electrode layer and the circuit board, and circuit board, resistive element and welding electrode layer form sequential circuit;
Wherein the caloic of this at least one insulating barrier and welding electrode layer combination is enough to bear welding this resistive element of induced damage resistive not during this strip connector.
The thickness of this insulating barrier is 0.05 to 1.0mm, and the thickness of this welding electrode layer is 0.05 to 1.0mm.
This insulating barrier is arranged at this resistive element upper surface, and is stacked between this resistive element and the welding electrode layer.
This insulating barrier has 2 layers and be arranged at the upper and lower surface of this resistive element respectively.
The welding manner of this welding electrode layer and strip connector comprises one in spot welding, reflow, electric resistance welding, the Laser Welding at least.
This insulating barrier is polypropylene insulation layer, fiberglass insulation, has the macromolecular material insulating barrier of thermoplastics type's plastic cement and the mutual penetrant structure of thermoset plastic, or has the macromolecular material insulating barrier of thermoset plastic and fiber.
This welding electrode layer is copper foil electrode layer, nickel foil electrode layer, nickel-clad copper foil electrode layer or nickel plating stainless steel electrode layer.
This strip connector is vertical bar shaped, curved or L shaped.
The utility model also provides a kind of over-current protecting element, comprising:
One resistive element; Comprise one first electrode foil, one second electrode foil and is stacked at the PTC material layer between this first electrode foil and second electrode foil, this PTC material layer and first and second electrode foil extend to the layered laminate structure jointly along first direction;
One first insulating barrier is formed at this first electrode foil surface, and the thickness of this first insulating barrier is at least 0.03mm;
One welding electrode layer is formed at this first surface of insulating layer, and the thickness of this welding electrode layer is at least 0.03mm; And
At least one first conducting connecting part, the edge second direction vertical with first direction extended, being electrically connected this welding electrode layer and first electrode foil, and this first conducting connecting part and this second electrode foil electrical isolation;
Wherein this second electrode foil is used to be electrically connected a circuit board, first electrode foil through the welding electrode layer welding a strip connector, thereby be electrically connected the electrode tip of a battery;
Wherein the caloic of this first insulating barrier and welding electrode layer combination is enough to bear welding this resistive element of induced damage resistive not during this strip connector.
The thickness of this first insulating barrier is between 0.05mm to 1.0mm, and the thickness of welding electrode layer is 0.05mm to 1.0mm.
This first insulating barrier is polypropylene insulation layer, fiberglass insulation, has the macromolecular material insulating barrier of thermoplastics type's plastic cement and the mutual penetrant structure of thermoset plastic or have thermoset plastic and the macromolecular material insulating barrier of fiber.
This welding electrode layer is copper foil electrode layer, nickel foil electrode layer, nickel-clad copper foil electrode layer or nickel plating stainless steel electrode layer.
At least one second conducting connecting part that this over-current protecting element also comprises one second insulating barrier and extends along this second direction; This second insulating barrier is formed at this second electrode foil surface, and second conducting connecting part is electrically connected the circuit in second electrode foil and the circuit board.
This over-current protecting element also comprises weld pad, and this weld pad is arranged at second surface of insulating layer, and this second electrode foil is electrically connected to this circuit board through this second conducting connecting part and weld pad.
This first and second conducting connecting part is arranged at over-current protecting element side or corner.
This strip connector is vertical bar shaped, curved or L shaped.
These L shaped first parts and second parts of comprising, wherein first parts are welded in this welding electrode layer.
Angle between these first parts and second parts is between 60 to 120 degree.
The utility model also provides a kind of battery protection circuit device, and a plurality of electronic components that comprise a circuit board and be arranged at this circuit board surface comprise an over-current protecting element in this electronic component, and this over-current protecting element comprises:
One resistive element has ptc characteristics;
At least one insulating barrier, thickness is at least 0.03mm;
One welding electrode layer be used to weld a strip connector being electrically connected to battery, and its thickness is at least 0.03mm;
Wherein this at least one insulating barrier and resistive element are stacked between this welding electrode layer and the circuit board, and circuit board, resistive element and welding electrode layer form sequential circuit;
Wherein the caloic of this at least one insulating barrier and welding electrode layer combination is enough to bear welding this resistive element of induced damage resistive not during this strip connector.
This battery protection circuit device also comprises a battery, and this battery comprises one first external electrode spare and one second external electrode spare, and wherein this first external electrode spare comprises this strip connector, to be welded in this welding electrode layer.
The caloic of this at least one insulating barrier and welding electrode layer combination is enough to bear with this strip connector of voltage 1～5V spot welding this resistive element of induced damage resistive not when this welding electrode layer.
This second external electrode spare is connected in the circuit of this circuit board, forms the battery protection loop.
This strip connector is vertical bar shaped, curved or L shaped.
These L shaped first parts and second parts of comprising, wherein first parts are welded in this welding electrode layer, and the angle between these first parts and second parts is between 60 to 120 degree.
Than prior art; Over-current protecting element of the utility model and battery protection circuit device have following useful technique effect: through the minimum thickness of control insulating barrier and welding electrode spare; The needs of welding external electrode spare are provided, thereby can effectively avoid the infringement of element because of when welding.
Description of drawings
Fig. 1 is the sketch map of the battery protection circuit device of the utility model one embodiment;
Fig. 2 A and Fig. 2 B are the application sketch map of the protective circuit module (PCM) in the battery protection circuit device of the utility model first embodiment;
Fig. 3 A and 3B are the sketch map of the over-current protecting element of the utility model first embodiment;
Fig. 4 is the sketch map of welding electrode layer of the over-current protecting element of the utility model one embodiment;
Fig. 5 is the sketch map of the over-current protecting element of the utility model second embodiment.
Wherein, description of reference numerals is following:
10: battery protection circuit device
11: battery
12: circuit board
13: over-current protecting element
14: weld pad
15: electronic component
16,17: external electrode spare
20: the strip connector
22: the first parts
24: the second parts
31: resistive element
32: the first insulating barriers
33: the second insulating barriers
36: the first electrode foils
37: the second electrode foils
38: the PTC material layer
35,39: conducting connecting part
40,50: breach
41,42: weld pad
51: resistive element
52: the first insulating barriers
53: the second insulating barriers
54: the welding electrode layer
56: the first electrode foils
57: the second electrode foils
58: the PTC material layer
61,62: weld pad
63,64,65,66: conducting connecting part
Embodiment
Below will cooperate graphicly, the execution mode of the utility model will be described, in the hope of the clear technology contents of understanding the utility model.Only relevant exposure only is embodiment, but not the restriction of the utility model.
Fig. 1 is the schematic perspective view of the battery protection circuit device of the utility model one embodiment.Battery protection circuit device 10 comprises battery 11 and circuit board 12.The surface of circuit board 12 is provided with various electronic component 15, wherein comprises over-current protecting element 13, and forms circuit protection module (PCM) structure.Over-current protecting element 13 tool ptc characteristics, and external electrode spare 16 1 ends of its surface soldered strip, the other end of external electrode spare 16 then is connected in battery 11.Circuit connects the weld pad 14 that its surface is provided with in the circuit board 12, and an end of weld pad 14 surface soldered external electrode spares 17, and the other end of external electrode spare 17 then is connected in battery 11.External electrode spare 16 and 17 is connected to positive and negative electrode or the negative, positive utmost point of battery 11 and forms the protection loop.
Fig. 2 A to Fig. 2 B shows the side schematic view of the battery protection circuit device of the utility model.For simplifying in order to explanation, Fig. 2 A to Fig. 2 B shows as the main member on the circuit board 12 of PCM, and do not show battery.With reference to Fig. 2 A, circuit board 12 surfaces are provided with over-current protecting element 13, electronic component 15 and weld pad 14 etc.For in response to the requirement on making, strip connector 20 can be welded in over-current protecting element 13 surfaces, to be connected to the electrode tip of battery.Expansion, among the embodiment, strip connector 20 promptly is equal to external electrode spare 16, also promptly utilizes the external electrode spare 16 that extends out from battery 11, is directly welded in over-current protecting element 13 surfaces.Perhaps, but battery 11 design extension connectors (figure does not show), strip connector 20 1 ends are welded in over-current protecting element 13 surfaces in view of the above, and the other end then is welded in the extension connector of battery 11.Also promptly utilize 2 electrode pad set to synthesize external electrode spare 16 shown in Figure 1.Summarize it, external electrode spare 16 comprises strip connector 20, but can do different variation designs in response to demand.
External electrode spare embodiment illustrated in fig. 1 16 is to extend from the side of circuit board 12, and the strip connector 20 shown in right Fig. 2 A is in response to the axially extended vertical bar shape member of demand along circuit board 12.Strip connector 20 also can be curved or L shaped shown in Fig. 2 B.With L shaped is example, strip connector 20 comprise first parts 22 that are welded in over-current protecting element 13 and with first parts, 22 angled second parts 24.Angle between 45 to 135 the degree, or preferably between 60 to 120 the degree.Among another embodiment, strip connector 20 also can extend from the side of circuit board 12, also promptly perpendicular to the direction of drawing.The variation of strip connector 20 on bearing of trend, the battery connection of looking closely the desire collocation is required, contains and be the utility model.
Fig. 3 A is the over-current protecting element 13 of the utility model one embodiment.Over-current protecting element 13 as shown in Figure 1 is for being arranged at the square surface binding type element on circuit board 12 surfaces, and Fig. 3 B is a kenel after the spinning upside down of Fig. 3 A.Over-current protecting element 13 comprises resistive element 31, first insulating barrier 32, second insulating barrier 33, welding electrode layer 34, conducting connecting part 35,39 and weld pad 41 and 42.Resistive element 31 comprises first electrode foil 36, second electrode foil 37 and is stacked at this first electrode foil 36 and the PTC material layer 38 of 37 of second electrode foils.PTC material layer 38 and first electrode foil 36, second electrode foil 37 extend to the layered laminate structure jointly along first direction.First insulating barrier 32 is formed at first electrode foil, 36 surfaces, and the thickness of first insulating barrier 32 is at least 0.03mm, and particularly 0.05 to 1.0mm, preferably is 0.1 to 0.3mm.Welding electrode layer 34 is formed at insulating barrier 32 surfaces, and the thickness of welding electrode layer 34 is at least 0.03mm, and particularly 0.05 to 1.0mm, preferably is 0.1 to 0.3mm.In the practical application, the thickness of first insulating barrier 32 or welding electrode layer 34 also can be 0.06mm, 0.08mm, 0.15mm, 0.2mm, 0.25mm.Conducting connecting part 35,39 is positioned at the element side, and the edge second direction vertical with first direction extended.In the present embodiment, conducting connecting part 35,39 is coated with the semicircle conductive through hole of conductive layer, so also can be other patterns, is not limited by present embodiment.Conducting connecting part 35 is electrically connected this welding electrode layer 34 and first electrode foil 36, and this conducting connecting part 35 and second electrode foil, 37 electrical isolation.Second electrode foil 37 is through conducting connecting part 39 and weld pad 42 electrical connection circuit plates 12 surfaces.Welding electrode layer 34 contiguous this conducting connecting part 39 place are provided with ring-like breach 40, and form electrical isolation with conducting connecting part 39 places.First electrode foil 36 passes through welding electrode layer 34 with welding strip connector 20, and is able to be electrically connected the electrode tip of battery 11.Weld pad 42 can surface adhering or mode such as reflow be connected in the circuit of circuit board 12.41 of weld pads only as the usefulness that fixedly is welded in circuit board 12, do not connect wherein circuit.Base this, weld pad 42 and welding electrode layer 34 be as upper/lower electrode, and be suitable for being welded in respectively circuit board 12 and strip connector 20, and constitute conductive path.
In addition, first insulating barrier 32 of Fig. 3 A maybe can omit, and welding electrode layer 34 is directly connected first electrode foil 36.Or with second insulating barrier 33 and weld pad 41,42 omissions, and utilize adhesion of second electrode foil, 37 direct surface or reflow in circuit board 12 surfaces.Summarize it, at least one in the insulating barrier 32 and 33 and resistive element 31 are to be stacked between this welding electrode layer 34 and the circuit board 12, and circuit board 12, resistive element 31 and welding electrode layer 34 form sequential circuit.
With reference to Fig. 4, welding electrode layer 34 can be covered with anti-welding lacquer 43 in two end surfaces, and the welding electrode layer 34 of the anti-welding lacquer 43 of weld pad 41,42 coatings like Fig. 4 capable of using of Fig. 3 A and Fig. 3 B is alternative, as the interface of surface adhering in circuit board 12.But electrode layer 34 needs to make similar breach near conducting connecting part 35, as electrical isolation between the two.Base this, element 13 upper and lower surfaces are the symmetric design like the anti-welding lacquer of coating of Fig. 4, so when being welded in strip connector 20 and circuit board 12, needn't directively consider.
Strength, temperature, voltage and energy when the caloic of first insulating barrier 32 and/or second insulating barrier 33 and 34 combination of welding electrode layer is enough to bear this strip connector 20 of welding and this resistive element 31 of induced damage resistive not.Therefore, the utility model has the restriction that as above is at least 0.03mm to the thickness of insulating barrier 32,33 and welding electrode layer.The big thickness of healing has preferable repellence naturally, but will be unfavorable for the demand of miniaturization of components.Among one embodiment, the voltage that can bear welding is 1～5V, 1.3～4V or is preferably 1.6～3V.Welding manner comprises one in spot welding, reflow, electric resistance welding, the Laser Welding at least.Insulating barrier 32,33 can comprise polypropylene, glass fiber or heat sink material.Wherein heat sink material comprises the macromolecular material of macromolecular material, tool thermoplastics type plastic cement and the mutual penetrant structure of thermoset plastic of thermoset plastic and fiber; It is exposed in TaiWan, China patent publication No. 200816235, notification number I339088 and publication number 201101342, is incorporated herein among this paper.Among one embodiment, welding electrode layer 34 comprises Copper Foil, nickel foil, nickel plating Copper Foil, zinc-plated Copper Foil or nickel plating stainless steel.
Fig. 5 is the schematic perspective view of the over-current protecting element 13 of another embodiment of the utility model.Over-current protecting element as shown in Figure 1 13 is for being arranged at the square surface binding type element on circuit board 12 surfaces, and is corners of being located at rectangular element with the main different conducting connecting parts that are of person shown in Fig. 3 A and the 3B.Over-current protecting element 13 comprises resistive element 51, first insulating barrier 52, second insulating barrier 53, welding electrode layer 54, conducting connecting part 63,64,65,66 and weld pad 61 and 62.Resistive element 51 comprises first electrode foil 56, second electrode foil 57 and is stacked at this first electrode foil 56 and the PTC material layer 58 of 57 of second electrode foils.PTC material layer 58 and first, second electrode foil 56,57 extend to the layered laminate structure jointly along first direction.First insulating barrier 52 is formed at electrode foil 56 surfaces, and the thickness of first insulating barrier 52 is at least 0.03mm, and particularly 0.05 to 0.5mm, or preferably is 0.1 to 0.3mm.Among one embodiment, welding electrode layer 54 is formed at insulating barrier 52 surfaces, and the thickness of this welding electrode layer 54 is at least 0.03mm, is preferably 0.05mm to 0.5mm, or is more preferred from 0.1mm to 0.3mm.Conducting connecting part 65, the 66 edges second direction vertical with first direction extended, being electrically connected this welding electrode layer 54 and first electrode foil 56, and this conducting connecting part 65,66 and this second electrode foil, 57 electrical isolation.Second electrode foil 57 is through conducting connecting part 63,64 and weld pad 61 electrical connection circuit plates 12 surfaces.Welding electrode layer 54 contiguous this conducting connecting part 63,64 place are provided with ring-like breach 40, and form electrical isolation with conducting connecting part 63,64.First electrode foil 56 passes through welding electrode layer 54 with welding strip connector 20, and is able to be electrically connected the electrode tip of battery 11.Weld pad 62 forms breach 50 near conducting connecting part 66 places, as electrical isolation between the two.Similarly, weld pad 61 also forms the breach as electrical isolation near conducting connecting part 65 places.In the weld pad 61 or 62 one can surface adhering (for example utilizing reflow) mode be connected in the circuit of circuit board 12, and another person then as the usefulness that fixedly is welded in circuit board 12, does not connect wherein circuit.The element of present embodiment is essentially symmetrical structure, has the advantage that need not consider directivity when therefore welding.Base this, weld pad 61 or 62 with welding electrode layer 54 as upper/lower electrode, and be suitable for being welded in respectively circuit board 12 and strip connector 20, and constitute conductive path.
Similarly, first insulating barrier 52 maybe can omit, and with welding electrode layer 54 direct connection electrode paper tinsel 56.Or with second insulating barrier 53 and weld pad 61,62 omissions, and directly utilize electrode foil 57 direct surface adhesion (for example utilizing reflow) mode to be fixed in circuit board 12 surfaces.In addition, 54 liang of end surfaces of welding electrode layer also can be covered with anti-welding lacquer, are equal to effect and provide.
Also be exposed in TaiWan, China patent announcement numbers 415624 and notification number I282696 about other structure kenels of the over-current protecting element 13 of surface adhesion type.The dependency structure kenel of above-mentioned each patent discloses and is incorporated herein among this paper.
The spot-welding equipment that the utility model test is used is the little spot welding machine power supply unit of the MSW-412 type of SEIWA manufacturing company, VB-S+ZH-32 type both-end plumb joint and SMC G36-10-01 Pressure gauge.The spot welding condition is rectangular wave (square waveform), and it continues 1 millisecond (ms) for 1V in proper order, and 0V continues 1.3 milliseconds, applies 1.9V at last and continues 1.9 milliseconds.Plumb joint pressure is 0.3MPa.In the present embodiment, the component size of testing is respectively 2920 and 1812 pattern or 2.3mm * 6mm, and the welding electrode layer of use is zinc-plated Copper Foil, and insulating barrier then uses polyethylene (PP), and spot welding is preceding and the resistance value such as the table one of some postwelding are listed.
Table one
Can know by table one; The resistance that reaches the some postwelding before each element spot welding does not have too about-face; And inspect element after the welding and do not have and damage to take place, this resistive element of induced damage resistive not when the caloic that foot is levied insulating barrier and the combination of welding electrode layer of the utility model is enough to bear the external strip connector of spot welding.
The utility model provides a kind of over-current protecting element and battery protection circuit device, through the minimum thickness of control insulating barrier and welding electrode spare, the needs of welding external electrode spare is provided, thus the infringement can effectively avoid element because of welding the time.
The technology contents and the technical characterstic of the utility model disclose as above, yet the personage who is familiar with this technology still maybe be based on the teaching of the utility model and announcement and done all replacement and modifications that does not deviate from the utility model spirit.Therefore, the protection range of the utility model should be not limited to embodiment announcement person, and should comprise various replacement and the modifications that do not deviate from the utility model, and is contained by following claim.
Claims (24)
1. an over-current protecting element is used to be arranged at a circuit board surface, and the usefulness as battery protection is characterized in that, this over-current protecting element is the layered laminate structure, and comprises:
One resistive element has ptc characteristics;
At least one insulating barrier, thickness is at least 0.03mm; And
One welding electrode layer be used to weld a strip connector being electrically connected to battery, and its thickness is at least 0.03mm;
Wherein this at least one insulating barrier and resistive element are stacked between this welding electrode layer and the circuit board, and circuit board, resistive element and welding electrode layer form sequential circuit;
Wherein the caloic of this at least one insulating barrier and welding electrode layer combination is enough to bear welding this resistive element of induced damage resistive not during this strip connector.
2. over-current protecting element according to claim 1 is characterized in that, the thickness of this insulating barrier is 0.05 to 1.0mm, and the thickness of this welding electrode layer is 0.05 to 1.0mm.
3. over-current protecting element according to claim 1 is characterized in that, this insulating barrier is arranged at this resistive element upper surface, and is stacked between this resistive element and the welding electrode layer.
4. over-current protecting element according to claim 1 is characterized in that, this insulating barrier has 2 layers and be arranged at the upper and lower surface of this resistive element respectively.
5. over-current protecting element according to claim 1 is characterized in that, the welding manner of this welding electrode layer and strip connector comprises one in spot welding, reflow, electric resistance welding, the Laser Welding at least.
6. over-current protecting element according to claim 1 is characterized in that, this insulating barrier is polypropylene insulation layer or fiberglass insulation.
7. over-current protecting element according to claim 1 is characterized in that, this welding electrode layer is copper foil electrode layer, nickel foil electrode layer, nickel-clad copper foil electrode layer or nickel plating stainless steel electrode layer.
8. over-current protecting element according to claim 1 is characterized in that, this strip connector is vertical bar shaped, curved or L shaped.
9. an over-current protecting element is characterized in that, comprising:
One resistive element; Comprise one first electrode foil, one second electrode foil and is stacked at the PTC material layer between this first electrode foil and second electrode foil, this PTC material layer and first and second electrode foil extend to the layered laminate structure jointly along first direction;
One first insulating barrier is formed at this first electrode foil surface, and the thickness of this first insulating barrier is at least 0.03mm;
One welding electrode layer is formed at this first surface of insulating layer, and the thickness of this welding electrode layer is at least 0.03mm; And
At least one first conducting connecting part, the edge second direction vertical with first direction extended, being electrically connected this welding electrode layer and first electrode foil, and this first conducting connecting part and this second electrode foil electrical isolation;
Wherein this second electrode foil is used to be electrically connected a circuit board, first electrode foil through the welding electrode layer welding a strip connector, thereby be electrically connected the electrode tip of a battery;
Wherein the caloic of this first insulating barrier and welding electrode layer combination is enough to bear welding this resistive element of induced damage resistive not during this strip connector.
10. over-current protecting element according to claim 9 is characterized in that, the thickness of this first insulating barrier is between 0.05mm to 1.0mm, and the thickness of welding electrode layer is 0.05mm to 1.0mm.
11. over-current protecting element according to claim 9 is characterized in that, this first insulating barrier is polypropylene insulation layer or fiberglass insulation.
12. over-current protecting element according to claim 9 is characterized in that, this welding electrode layer is copper foil electrode layer, nickel foil electrode layer, nickel-clad copper foil electrode layer or nickel plating stainless steel electrode layer.
13. over-current protecting element according to claim 9; It is characterized in that; At least one second conducting connecting part that it also comprises one second insulating barrier and extends along this second direction; This second insulating barrier is formed at this second electrode foil surface, and second conducting connecting part is electrically connected the circuit in second electrode foil and the circuit board.
14. over-current protecting element according to claim 13 is characterized in that, it also comprises weld pad, and this weld pad is arranged at second surface of insulating layer, and this second electrode foil is electrically connected to this circuit board through this second conducting connecting part and weld pad.
15. over-current protecting element according to claim 13 is characterized in that, this first and second conducting connecting part is arranged at over-current protecting element side or corner.
16. over-current protecting element according to claim 9 is characterized in that, this strip connector is vertical bar shaped, curved or L shaped.
17. over-current protecting element according to claim 16 is characterized in that, these L shaped first parts and second parts of comprising, and wherein first parts are welded in this welding electrode layer.
18. over-current protecting element according to claim 17 is characterized in that, the angle between these first parts and second parts is between 60 to 120 degree.
19. a battery protection circuit device is characterized in that, a plurality of electronic components that comprise a circuit board and be arranged at this circuit board surface comprise an over-current protecting element in this electronic component, and this over-current protecting element comprises:
One resistive element has ptc characteristics;
At least one insulating barrier, thickness is at least 0.03mm;
One welding electrode layer be used to weld a strip connector being electrically connected to battery, and its thickness is at least 0.03mm;
Wherein this at least one insulating barrier and resistive element are stacked between this welding electrode layer and the circuit board, and circuit board, resistive element and welding electrode layer form sequential circuit;
Wherein the caloic of this at least one insulating barrier and welding electrode layer combination is enough to bear welding this resistive element of induced damage resistive not during this strip connector.
20. battery protection circuit device according to claim 19; It is characterized in that it also comprises a battery, this battery comprises one first external electrode spare and one second external electrode spare; Wherein this first external electrode spare comprises this strip connector, to be welded in this welding electrode layer.
21. battery protection circuit device according to claim 20 is characterized in that, the caloic of this at least one insulating barrier and welding electrode layer combination is enough to bear with this strip connector of voltage 1～5V spot welding this resistive element of induced damage resistive not when this welding electrode layer.
22. battery protection circuit device according to claim 20 is characterized in that, this second external electrode spare is connected in the circuit of this circuit board, forms the battery protection loop.
23. battery protection circuit device according to claim 19 is characterized in that, this strip connector is vertical bar shaped, curved or L shaped.
24. battery protection circuit device according to claim 23 is characterized in that, these L shaped first parts and second parts of comprising, and wherein first parts are welded in this welding electrode layer, and the angle between these first parts and second parts is between 60 to 120 degree.
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|---|---|---|---|
| CN2011204568932U CN202405027U (en) | 2011-11-14 | 2011-11-14 | Over-current protection element and battery protection circuit device |
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|---|---|---|---|
| CN2011204568932U CN202405027U (en) | 2011-11-14 | 2011-11-14 | Over-current protection element and battery protection circuit device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103106989A (en) * | 2011-11-14 | 2013-05-15 | 聚鼎科技股份有限公司 | Overcurrent protection element and battery protection circuit device |
| CN103247399A (en) * | 2012-02-07 | 2013-08-14 | 聚鼎科技股份有限公司 | Surface tack thermistor element |
| TWI449062B (en) * | 2012-10-31 | 2014-08-11 | Polytronics Technology Corp | Surface mountable over-current protection device |
| CN104064296A (en) * | 2013-03-22 | 2014-09-24 | 聚鼎科技股份有限公司 | overcurrent protection element |
| CN104658726A (en) * | 2013-11-25 | 2015-05-27 | 聚鼎科技股份有限公司 | Overcurrent protection element and protection circuit board thereof |
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2011
- 2011-11-14 CN CN2011204568932U patent/CN202405027U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106989A (en) * | 2011-11-14 | 2013-05-15 | 聚鼎科技股份有限公司 | Overcurrent protection element and battery protection circuit device |
| CN103106989B (en) * | 2011-11-14 | 2016-08-31 | 聚鼎科技股份有限公司 | Over-current protecting element and battery protection circuit device |
| CN103247399A (en) * | 2012-02-07 | 2013-08-14 | 聚鼎科技股份有限公司 | Surface tack thermistor element |
| TWI449062B (en) * | 2012-10-31 | 2014-08-11 | Polytronics Technology Corp | Surface mountable over-current protection device |
| CN104064296A (en) * | 2013-03-22 | 2014-09-24 | 聚鼎科技股份有限公司 | overcurrent protection element |
| CN104064296B (en) * | 2013-03-22 | 2017-04-12 | 聚鼎科技股份有限公司 | overcurrent protection element |
| CN104658726A (en) * | 2013-11-25 | 2015-05-27 | 聚鼎科技股份有限公司 | Overcurrent protection element and protection circuit board thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20161114 |