CN202839179U - Over-current protection element - Google Patents
Over-current protection element Download PDFInfo
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- CN202839179U CN202839179U CN 201220511954 CN201220511954U CN202839179U CN 202839179 U CN202839179 U CN 202839179U CN 201220511954 CN201220511954 CN 201220511954 CN 201220511954 U CN201220511954 U CN 201220511954U CN 202839179 U CN202839179 U CN 202839179U
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- conductive foil
- electrode
- over
- current protecting
- protecting element
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Abstract
The utility model discloses an over-current protection element which comprises a PTC (Positive Temperature Coefficient) wafer, a conductive connecting layer, a first electrode, an insulating layer and a second electrode. The PTC wafer comprises a first conductive foil, a second conductive foil and a PTC material layer superposed between the first conductive foil and the second conductive foil. The conductive connecting layer is electrically connected with the first conductive foil. The first electrode comprises a horizontal part and a vertical part connected with the horizontal part. The horizontal part is arranged on the surface of the conductive connecting layer. The insulating layer is arranged on the surface of the second conductive foil. The second electrode comprises at least two electrode blocks formed on the surface of the insulating layer, and each electrode block is electrically connected with the second conductive foil.
Description
Technical field
The utility model is about a kind of over-current protecting element, particularly has a ptc characteristics (Positive Temperature Coefficient about a kind of; PTC) over-current protecting element.
Background technology
Over-current protecting element is used to protective circuit, makes it avoid damaging because of overheated or the overcurrent of flowing through.Over-current protecting element usually comprises two electrodes and is positioned at two interelectrode resistance materials.This resistance material tool ptc characteristics; that is when room temperature the tool low-resistance value, and rise to when having overcurrent to produce on a critical temperature or the circuit when temperature, its resistance value can jump more than thousands of times at once; suppress by this overcurrent and pass through, to reach the purpose of circuit protection.When no longer including the situation of overcurrent after room temperature falls back in temperature or on the circuit, over-current protecting element can return back to low resistance state, and makes again normal running of circuit.
Existing nickel strap type PTC product begins to use instead paster mode upper plate for saving the space, and designs a L-type nickel sheet (metal electrode) in the upper end and do quick combination with the battery core battery.But this design has two problems easily: one is combined the skew that produces for L-type nickel sheet with the Reflow Soldering of PTC wafer, and another is protective circuit module (Protective Circuit Module in the electrode Reflow Soldering of PTC product; PCM) skew that produces.The relation of melting the tin skewness because of when welding is started in these a plurality of skews.The L-type nickel sheet that this skew can cause the PTC over-current protecting element produces parallel or deflection gap with the L-type nickel sheet of battery core battery, make its can't spot welding or spot welding bad, and then loss fine ratio of product.
The utility model content
The utility model main purpose be the L-type nickel sheet that improves surface mount nickel strap type over-current protecting element with the L-type nickel sheet of battery core battery in conjunction with the time cause because of parallel or deflection gap can't spot welding or the bad problem of spot welding.
According to the over-current protecting element of the utility model one embodiment, it comprises: PTC wafer, conduction articulamentum, the first electrode, the first insulating barrier and the second electrode.The PTC wafer comprises the first conductive foil, the second conductive foil and is stacked at ptc layer between this first conductive foil and the second conductive foil.The conduction articulamentum is electrically connected this first conductive foil.The first electrode comprises horizontal part and is connected in the vertical component effect of this horizontal part, and this horizontal part is located at this conduction articulamentum surface.The first insulating barrier is located at this second conductive foil surface.The second electrode comprises at least two electrode blocks that are formed at this first surface of insulating layer, and each electrode block and this second conductive foil are electrically connected.
Among one embodiment, this first conductive foil surface of conduction articulamentum physical contact.
Among one embodiment, each electrode block utilizes conductive hole or conductive pole to be electrically connected in the second conductive foil.
Among one embodiment, the top connecting electrode block of conductive hole or conductive pole, the bottom connects the second conductive foil.
Among one embodiment, over-current protecting element comprises the second insulating barrier of being located at the first conductive foil surface in addition, and wherein this conduction articulamentum comprises at least two electrode blocks of being located at this second surface of insulating layer.
Among one embodiment, the number of this electrode block is 2 to 6.
Among one embodiment, the angle between this vertical component effect and horizontal part between 75 ~ 105 the degree, or particularly 80 ~ 100 the degree.
Among one embodiment, the distance of this electrode district interblock is between 0.05 ~ 1.5mm.
Among one embodiment, the thickness of this conduction articulamentum is greater than the thickness of the first conductive foil.
The utility model carries out block with the bottom of over-current protecting element or top electrodes to be cut apart; melt the tin power when utilizing Reflow Soldering (reflow) and be evenly distributed in the Different electrodes block; and then mutual balance; make over-current protecting element and protective circuit module in conjunction with unlikely skew, so can effectively solve the L-type nickel sheet of battery and the first electrode of over-current protecting element (for example L-type nickel sheet) in conjunction with the time can't spot welding or the bad problem of spot welding.
Description of drawings
Fig. 1 and Fig. 2 illustrate the application schematic diagram of the over-current protecting element of the utility model one embodiment.
Fig. 3 illustrates the schematic diagram of the over-current protecting element of the utility model the first embodiment.
Fig. 4 illustrates the schematic diagram of the over-current protecting element of the utility model the second embodiment.
Fig. 5 illustrates the schematic diagram of the over-current protecting element of the utility model the 3rd embodiment.
Wherein, description of reference numerals is as follows:
10,40,50 over-current protecting elements;
The 11PTC wafer;
12 first electrodes;
13,35 conduction articulamentums;
14 insulating barriers;
15,25 second electrodes;
16 conductive poles;
20 batteries;
22L type nickel sheet;
30 protective circuit modules;
The 111PTC material layer;
112 first conductive foils;
113 second conductive foils;
121 horizontal parts;
122 vertical component effects;
151,251,351 electrode blocks.
Embodiment
For above and other technology contents of the present utility model, feature and advantage can be become apparent, cited below particularlyly go out related embodiment, and cooperate appended graphicly, be described in detail below:
With reference to Fig. 1 and Fig. 2, over-current protecting element 10 is the overcurrent protections that are applied to battery 20.In the present embodiment, a surface soldered of over-current protecting element 10 is in protective circuit module 30, and another surface of over-current protecting element 10 is provided with the first electrode 12 of L-type.Battery 20 comprises is located at its surperficial L-type electrode 22.L-type electrode 22 is used for the first electrode 12 of welding over-current protecting element 10, forms by this turning circuit, so that the overcurrent protection of battery 20 to be provided.
The schematic diagram of the over-current protecting element of Fig. 3 the utility model the first embodiment.Over-current protecting element 10 comprises PTC wafer 11, conduction articulamentum 13, the first electrode 12, insulating barrier 14 and the second electrode 15.PTC wafer 11 comprises the first conductive foil 112, the second conductive foil 113 and is stacked at this first conductive foil 112 and the ptc layer 111 of 113 of the second conductive foils.Conduction articulamentum 13 is located at this first conductive foil 112 surfaces.The first electrode 12 comprises horizontal part 121 and is connected in the vertical component effect 122 of this horizontal part 121, and wherein these horizontal part 121 physical contacts are somebody's turn to do conduction articulamentum 13 surfaces, and vertical component effect 122 is used for connecting the L-type nickel sheet 22 of battery 20.Insulating barrier 14 is located at this second conductive foil 113 surfaces.The second electrode 15 comprises four electrode blocks 151 that are formed at these insulating barrier 14 surfaces.Each electrode block 151 is electrically connected with this second conductive foil 113.
Among one embodiment, each electrode block 151 utilizes conductive pole 16 to be electrically connected in the second conductive foil 113.For example: the top connecting electrode block 151 of conductive pole 16, the bottom then connects the second conductive foil 113.This conductive pole 16 also can be substituted by conductive hole or other electric-conductors with identical functions.
Among one embodiment, the angle that vertical component effect 122 and horizontal part are 121 between 75 ~ 105 the degree, or particularly between 80 ~ 100 the degree between.The angle of the L-type nickel sheet 22 of the main matching battery 20 of this angle is in order to both combinations.
Among one embodiment, the distance that the electrode block is 151 is between 0.05 ~ 1.5mm.
Among one embodiment, the first electrode 12 of L-type utilizes Reflow Soldering to be connected in conduction articulamentum 13.In addition, the thickness of conduction articulamentum 13 can be thicker, especially greater than the thickness of the first conductive foil 112.By this, the first electrode 12 of the L-type also mode of utilisation point weldering is connected in conduction articulamentum 13, and the unlikely material that hurts in the ptc layer 111.
The schematic diagram of the over-current protecting element of Fig. 4 the utility model the second embodiment.Over-current protecting element 40 is similar to the structure of over-current protecting element shown in Figure 3 10, and difference is in the second electrode 25 of present embodiment and is divided into two electrode blocks 251.The spy's, the number of electrode block of the present utility model can be 2 to 6.
The over-current protecting element schematic diagram of Fig. 5 the utility model the 3rd embodiment.Compared to that shown in Figure 4, the mode of over-current protecting element 50 and 12 combinations of L-type the first electrode also adopts the electrode block of separation, also is about to conduction articulamentum originally 13 and adopts the pattern of electrode blocks 351 to substitute.In detail, form insulating barrier 14 on the first conductive foil 112 surfaces of PTC wafer 11, and form conduction articulamentum 35 in insulating barrier 14 surfaces.This conduction articulamentum 35 can comprise a plurality of electrode blocks 351.Electrode block 351 is as the interface when 12 reflows of L-type the first electrode are combined.Each electrode block 351 utilizes conductive pole 16 (or conductive hole) to be electrically connected in the first conductive foil 112.For example: the bottom connecting electrode block 351 of conductive pole 16, the top then connects the first conductive foil 112.In the present embodiment, 122 of the horizontal part 121 of the first electrode 12 of L-type and vertical component effects have indent design, so that bending when making.
Embodiment of the present utility model with over-current protecting element 10,40 and 50 electrode 15,25 and conduction articulamentum 35(can be positioned at bottom or top) carry out block and cut apart; melt the tin power when utilizing Reflow Soldering and be evenly distributed in Different electrodes block 151,251 or 351; and then mutual balance; make over-current protecting element 10,40 and 50 stable and protective circuit modules 30 and L-type electrode 12 in conjunction with and unlikely skew solves the bad problem of spot welding when the L-type nickel sheet of battery is combined.
Technology contents of the present utility model and technical characterstic disclose as above, yet the technology personage that this area has common knowledge still may be based on teaching of the present utility model and announcement and done all replacement and modifications that does not deviate from the utility model spirit.Therefore, protection range of the present utility model should be not limited to those disclosed embodiments, and should comprise various do not deviate from replacement of the present utility model and modifications, and is contained by applying for a patent the claim scope.
Claims (9)
1. an over-current protecting element is characterized in that, comprises:
One PTC wafer comprises the first conductive foil, the second conductive foil and is stacked at ptc layer between this first conductive foil and the second conductive foil;
One conduction articulamentum is electrically connected this first conductive foil;
One first electrode comprises a horizontal part and is connected in a vertical component effect of this horizontal part, and this horizontal part is located at this conduction articulamentum surface;
One first insulating barrier is located at the surface of this second conductive foil;
One second electrode comprises at least two electrode blocks that are formed at this first surface of insulating layer, and each electrode block and this second conductive foil are electrically connected.
2. according to claim 1 over-current protecting element is characterized in that, the surface of this this first conductive foil of conduction articulamentum physical contact.
3. according to claim 1 over-current protecting element is characterized in that wherein this each electrode block utilizes conductive hole or conductive pole to be electrically connected in the second conductive foil.
4. according to claim 3 over-current protecting element is characterized in that, the top connecting electrode block of this conductive hole or conductive pole, and the bottom connects the second conductive foil.
5. according to claim 1 over-current protecting element is characterized in that other comprises the second insulating barrier of being located at the first conductive foil surface, and wherein this conduction articulamentum comprises at least two electrode blocks of being located at this second surface of insulating layer.
6. according to claim 1 over-current protecting element is characterized in that the number of this electrode block is 2 to 6.
7. according to claim 1 over-current protecting element is characterized in that, the angle between this vertical component effect and horizontal part is between 75 ~ 105 degree.
8. according to claim 1 over-current protecting element is characterized in that the distance of this electrode district interblock is between 0.05 ~ 1.5mm.
9. according to claim 1 over-current protecting element is characterized in that, the thickness of this conduction articulamentum is greater than the thickness of the first conductive foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511954 CN202839179U (en) | 2012-10-08 | 2012-10-08 | Over-current protection element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511954 CN202839179U (en) | 2012-10-08 | 2012-10-08 | Over-current protection element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202839179U true CN202839179U (en) | 2013-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220511954 Expired - Fee Related CN202839179U (en) | 2012-10-08 | 2012-10-08 | Over-current protection element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202839179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039256A (en) * | 2017-12-20 | 2018-05-15 | 广东爱晟电子科技有限公司 | A kind of thermal resistance row chip and preparation method thereof |
-
2012
- 2012-10-08 CN CN 201220511954 patent/CN202839179U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039256A (en) * | 2017-12-20 | 2018-05-15 | 广东爱晟电子科技有限公司 | A kind of thermal resistance row chip and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130327 Termination date: 20201008 |