CN104682128A - Charging interface for overcurrent or overheating protection - Google Patents
Charging interface for overcurrent or overheating protection Download PDFInfo
- Publication number
- CN104682128A CN104682128A CN201510071473.5A CN201510071473A CN104682128A CN 104682128 A CN104682128 A CN 104682128A CN 201510071473 A CN201510071473 A CN 201510071473A CN 104682128 A CN104682128 A CN 104682128A
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- overcurrent
- conductive component
- charging inlet
- overheated
- protection according
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Protection Of Static Devices (AREA)
Abstract
The invention discloses a charging interface for overcurrent or overheating protection. The charging interface includes a base and a conductive part, wherein the conductive part is fixed in the base; an overcurrent and overheating protection element is electrically connected in series with the conductive part; the conductive part comprises a first conductive part and a second conductive part at least, wherein the first conductive part is composed of a first embedded end and a first connection end, and the first embedded end is not in direct contact with the first connection end; the first embedded end is fixed in the base and is electrically connected in series with the first connection end through the overcurrent and overheating protection element; the second conductive part is an integral conductive part formed by electrically connecting a second embedding end with a second connection end directly. The charging interface can cut off the current promptly until the fault is removed when the current is abnormal and the interface temperature is too high, so that the charging interface has outstanding safety performance.
Description
Technical field
The present invention relates to the charging inlet of a kind of overcurrent and overtemperature protection, particularly this charging inlet can current anomaly and interface temperature too high time, timely cut-off current, until fault is removed, therefore has outstanding security performance.
Background technology
Along with the development of various peripheral electron devices of usage data transmission and charging inlet, people use various connecting line in daily life more and more frequently.But, along with the appearance of various big current electronic device, charging current is increasing, charging times is more and more frequent, the plug number of times of various interfaces of connecting wires also gets more and more, and this makes various connecting line and be attached thereto the electronic equipment connect may occur bearing large fault current and heating and the hidden danger of burning.At present, various connecting line does not adopt effective protected mode to deal with this hidden danger, therefore once break down, will cause serious consequence.Therefore, installing the element with overcurrent and overheat protective function at interfaces of connecting wires position can make electronic product safer in transfer of data and charging overcharge.
Current charge protection mainly realizes the protection of overcurrent, excess temperature and short circuit etc. in battery protecting circuit.As:
Application number 201310625278.3 discloses a kind of battery monitoring circuit; comprise the charging inlet of series connection, charge control module, storage battery, output interface; the minus earth of charging inlet; the negative pole of storage battery is by battery protection module ground connection; the negative pole of output interface is by electronic switch module ground connection; MCU control unit connects charging inlet, charge control module, electronic switch module respectively; and control charging current according to input voltage, the break-make of electronic switch module is also controlled according to output current.This invention by the defencive function to battery circuit, as overshoot, cross put, overcurrent, overtemperature protection etc.; Can analyze under charging and discharging state, discharge and recharge time, charge/discharge electricity amount, charging/discharging voltage, battery temperature etc., and these parameters are shown on screen, also by bluetooth communication module, battery parameter is shown on intelligent terminal, make managing electrical power become intuitively convenient.
Application number 201210198360.8 relates to a kind of intelligent charger, comprise the data wire in charger body, charger body, live wire plug, described charger body is connected with data wire, intelligent switch is fixed with between described live wire plug and charger body, described data wire and charger body connecting end surface are fixed with intelligent controller, and described intelligent controller is connected by wire with intelligent switch.The invention has the beneficial effects as follows: structure is simple, and cost of manufacture is low.
Application number 201120012580.8 discloses a kind of two-way changing battery pack again, include at least two battery cells, each battery cell is connected to charging inlet, boost-buck buck-boost converter, multichannel boost-buck buck-boost converter synchronous working, every road boost-buck buck-boost converter is linked into equalizing control circuit respectively, equalizing control circuit is circumscribed with Parallel Control circuit, and Parallel Control circuit is connected with output interface.This utility model solve battery pack in groups time depend on problem unduly to monomer is conforming, realize overcurrent, cross put, short circuit, overheat protective function, guarantee that battery pack is used safely.
Summary of the invention
The object of this invention is to provide the charging inlet of a kind of overcurrent and overtemperature protection, can by snapping in an overcurrent and over-temperature protection element, current anomaly and interface temperature too high time timely cut-off current, until fault is removed.
The object of the invention is realized by following proposal: the charging inlet of a kind of overcurrent and overtemperature protection; comprise pedestal and conductive component; described conductive component is fixed in pedestal; overcurrent and overheating protective element are connected with described conductive component connected in electrical series; described conductive component at least comprises the first conductive component and the second conductive component, wherein:
Described first conductive component is made up of the first built-in end and the first line end, and the first built-in end does not directly contact with the first line end;
Described first built-in end is fixed on base interior, and it is connected with the first line end connected in electrical series by described overcurrent and overheating protective element;
Described second conductive component is directly electrically connected the overall conductive component of of being formed by the second built-in end and the second line end.
On such scheme basis, described first built-in end and the first line end are electrically connected by spring leaf and described overcurrent and overheating protective element.The snap-in method of its use spring leaf of the present invention installs overcurrent and overheating protective element, simple and convenient; Simultaneously it thus protection electronic equipment and circuit.
On such scheme basis, described conductive component can comprise other conductive component for transfer of data.
On such scheme basis, described overcurrent and overheating protective element at least comprise the chip that has resistance positive temperature coefficient effect.
On such scheme basis, described in there is resistance positive temperature coefficient effect chip comprise:
A () has the conducing composite material basic unit of resistance positive temperature coefficient effect, have relative upper and lower surface;
B () first conductive electrode, is placed in the upper surface of conducing composite material basic unit;
C () second conductive electrode, is placed in the lower surface of lower conducing composite material basic unit.
On such scheme basis, the described conducing composite material basic unit with resistance positive temperature coefficient effect is at least made up of polymer and conductive filler, polymeric substrate accounts for the 20%-75% of the volume fraction of described polymer base conductive composite material, be preferably between 25%-70%, more excellent is between 30%-65%; The particle diameter of described conductive filler is preferably 0.05 μm ~ 50 μm, and more excellent is 0.1 μm ~ 20 μm; Specific insulation is not more than 0.03 Ω .m, is preferably not more than 0.02 Ω .m, more excellent in being not more than 0.01 Ω .m.Described conductive filler accounts for 25% ~ 80% of described conducing composite material basic unit volume fraction, and be preferably between 30%-75%, more excellent is between 35%-70%, is scattered in described polymer.
Described polymer is selected from polyethylene, haloflex, oxidic polyethylene, polyvinyl chloride, hycar, acrylonitrile-butadiene-styrene copolymer, polystyrene, Merlon, polyamide, PETG, polybutylene terephthalate (PBT), polyphenylene oxide, polyphenylene sulfide, polyformaldehyde, phenolic resins, polytetrafluoroethylene, tetrafluoraoethylene-hexafluoropropylene copolymer, poly-trifluoro-ethylene, polyvinyl fluoride, maleic anhydride grafted polyethylene, polypropylene, Kynoar, epoxy resin, ethylene-vinyl acetate copolymer, polymethyl methacrylate, one in ethylene-acrylic acid copolymer and composition thereof.
Described conductive filler is selected from one in carbon black, graphite, carbon fiber, carbon nano-tube, metal dust, conductivity ceramics powder and composition thereof.
Described metal dust is selected from: one in copper, nickel, cobalt, iron, tungsten, tin, lead, silver, gold, platinum or its alloy and composition thereof.
Described conductivity ceramics powder is selected from: the mixture of one or more among metal nitride, metal carbides, metal boride, metal silicide.
Other components can be contained in the described conducing composite material basic unit with resistance positive temperature coefficient effect, as antioxidant, radiation crosslinker (are often called irradiation promoter, crosslinking agent or crosslinking accelerator, such as cyanacrylate), coupling agent, dispersant, stabilizer, conductive fillers (as magnesium hydroxide, calcium carbonate), fire retardant, arc light inhibitor or other components.These components are not more than 15% of conducing composite material cumulative volume usually, such as 5% percent by volume.
The charging inlet of overcurrent provided by the invention and overtemperature protection, superiority is: it uses the snap-in method of spring leaf to install overcurrent and overheating protective element, simple and convenient, avoid using complicated and the unmanageable Reflow Soldering of process or other welding procedure to install overcurrent and overheating protective element; Simultaneously it can current anomaly and interface temperature too high time timely cut-off current, until fault is removed, thus protection electronic equipment and circuit.
Accompanying drawing explanation
Fig. 1 chip schematic diagram with resistance positive temperature coefficient effect of the present invention;
The structural representation of Fig. 2 the present invention the 1st embodiment;
The structural representation of Fig. 3 the present invention the 2nd embodiment;
The structural representation of Fig. 4 the present invention the 3rd embodiment;
The structural representation of Fig. 5 the present invention the 4th embodiment;
The function curve of Fig. 6 the present invention the 3rd embodiment.
Embodiment
embodiment 1
Have as Fig. 1 is of the present invention shown in the chip schematic diagram of resistance positive temperature coefficient effect and the structural representation of Fig. 2 the present invention the 1st embodiment: the charging inlet 1 of a kind of overcurrent and overtemperature protection; comprise pedestal 2 and conductive component; described conductive component is fixed in pedestal 2; overcurrent and overheating protective element 4 are connected with described conductive component connected in electrical series; described conductive component at least comprises the first conductive component and the second conductive component, wherein:
Described first conductive component 31 is made up of the first built-in end 311 and the first line end 312, and the first built-in end 311 does not directly contact with the first line end 312;
It is inner that described first built-in end 311 is fixed on pedestal 2, and it is connected with the first line end 312 connected in electrical series by described overcurrent and overheating protective element 4;
Described second conductive component 32 is directly electrically connected the overall conductive component of of being formed by the second built-in end 321 and the second line end 322, and the second built-in end 321 embeds in pedestal 2.
First built-in end 311 and the first line end 312 are electrically connected by self spring leaf and overcurrent and overheating protective element 4, and are placed in the same side of overcurrent and overheating protective element 4.
As shown in Figure 1, have the structural representation of the chip 20 of resistance positive temperature coefficient effect for the present invention, making step is as follows:
By polymer, conductive filler, processing aid by suitable formula batching.Banbury temperature is set as 180 degree, and rotating speed is 30 revs/min, first adds polymer banburying after 3 minutes, then conductive filler and processing aid is added, feed in raw material and to complete in 3 minutes, continue banburying discharging after 15 minutes, obtain the conducing composite material with resistance positive temperature coefficient effect.
The conducing composite material with resistance positive temperature coefficient effect good for above-mentioned melting mixing is rolled by mill, obtains the conducing composite material basic unit 22 with resistance positive temperature coefficient effect that thickness is 0.20 ~ 0.25 millimeter, as Fig. 1.
The conducing composite material basic unit 22 of resistance positive temperature coefficient effect will be had, by being placed between two layers of conductive electrode 21a and 21b shown in Fig. 1, the matsurface of conductive electrode 21a and 21b is combined closely with the conducing composite material basic unit 22 with resistance positive temperature coefficient effect.Stackedly to be closely linked above-mentioned three well by the method for hot pressing.The temperature of hot pressing is 180 degrees Celsius, and pressure is 12 MPas, and the time is 10 minutes, finally colds pressing on cold press 10 minutes, obtains the chip 20 with resistance positive temperature coefficient effect shown in Fig. 1.
By having the chip 20 of resistance positive temperature coefficient effect through punching press or scribing, make the chip of designing requirement size, the size of chip depends on the size of overcurrent and overheating protective element.The element 4 of punching press or the good chip overcurrent and overheat protective function with resistance positive temperature coefficient effect of scribing is snapped in the pedestal 2 as Fig. 2.
embodiment 2
As shown in the structural representation of Fig. 3 the present invention the 2nd embodiment; the present embodiment structure is identical with embodiment 1 agent structure; comprise first, second conductive component 31 ', 32 '; second conductive component 32 ' structure is identical with embodiment 1; just the first built-in end 311 ' and the first line end 312 ' are electrically connected by self spring leaf and overcurrent and overheating protective element 4, and are placed in the both sides of overcurrent and overheating protective element 4 respectively.
embodiment 3
The present embodiment is identical with embodiment 1 agent structure, just on embodiment 1 architecture basics, the 3rd conductive component 5 and the 4th conductive component 6 is added between first, second conductive component, 3rd conductive component 5 is identical with the second conductive component 32 with the structure of the 4th conductive component 6, namely be all directly be electrically connected by built-in end and line end to form an entirety, built-in end is fixed on the inside of pedestal 2.3rd conductive component 5 and the 4th conductive component 6 can play transmission of data signals.
Fig. 6 is the function curve of charging inlet described in the present embodiment 3, when have in circuit larger current by time, conventional charging inlet place can continue a large amount of heating, until the base part melting of charging inlet, device is destroyed.And overcurrent and overheating protective element have been installed in charging inlet described in embodiment 3; when there being larger current to pass through in circuit; overcurrent and overheating protective element cut off circuit, make charging inlet surface temperature stable maintenance in a safer region (as about 50 DEG C).
embodiment 4
The present embodiment is identical with embodiment 2 agent structure; just on embodiment 2 basis; the charging inlet of described overcurrent and overtemperature protection adds the 3rd conductive component 5 ' and the 4th conductive component 6 ', and position is led between parts 31 ', 32 ' at first, second.3rd conductive component 5 ' is identical with the second conductive component 32 ' with the structure of the 4th conductive component 6 ', is namely all to be directly electrically connected by built-in end and line end to form an entirety, and built-in end is fixed on the inside of pedestal 2.3rd conductive component 5 ' and the 4th conductive component 6 ' can play transmission of data signals.
Content of the present invention and feature disclose as above, however above describe the present invention only relate to specific part of the present invention briefly or only, feature of the present invention may than content disclosed herein relate to more.Therefore, protection scope of the present invention should be not limited to the content that embodiment discloses, and should be included in the combination of all the elements embodied in different piece, and does not variously deviate from replacement of the present invention and modification, and is contained by claims of the present invention.
Claims (10)
1. the charging inlet of an overcurrent and overtemperature protection; comprise pedestal and conductive component; described conductive component is fixed in pedestal; it is characterized in that: overcurrent and overheating protective element are connected with described conductive component connected in electrical series; described conductive component at least comprises the first conductive component and the second conductive component, wherein:
Described first conductive component is made up of the first built-in end and the first line end, and the first built-in end does not directly contact with the first line end;
Described first built-in end is fixed on base interior, and it is connected with the first line end connected in electrical series by described overcurrent and overheating protective element;
Described second conductive component is directly electrically connected the overall conductive component of of being formed by the second built-in end and the second line end.
2. the charging inlet of overheated and overcurrent protection according to claim 1, is characterized in that: described first built-in end and the first line end are electrically connected by spring leaf and described overcurrent and overheating protective element.
3. the charging inlet of overheated and overcurrent protection according to claim 1, is characterized in that: described conductive component comprises other conductive component for transfer of data.
4. the charging inlet of overheated and overcurrent protection according to claim 1, is characterized in that: described overcurrent and overheating protective element at least comprise the chip that has resistance positive temperature coefficient effect.
5. the charging inlet of overheated and overcurrent protection according to claim 5, is characterized in that: described in there is resistance positive temperature coefficient effect chip comprise:
A () has the conducing composite material basic unit of resistance positive temperature coefficient effect, have relative upper and lower surface;
B () first conductive electrode, is placed in the upper surface of conducing composite material basic unit;
C () second conductive electrode, is placed in the lower surface of lower conducing composite material basic unit.
6. the charging inlet of overheated and overcurrent protection according to claim 5; it is characterized in that the described conducing composite material basic unit with resistance positive temperature coefficient effect is at least made up of polymer and conductive filler; polymeric substrate accounts for the 20%-75% of the volume fraction of described polymer base conductive composite material; the particle diameter of described conductive filler is preferably 0.05 μm ~ 50 μm, and specific insulation is not more than 0.03 Ω .m.
7. the charging inlet of overheated and overcurrent protection according to claim 6, it is characterized in that described polymer is selected from polyethylene, haloflex, oxidic polyethylene, polyvinyl chloride, hycar, acrylonitrile-butadiene-styrene copolymer, polystyrene, Merlon, polyamide, PETG, polybutylene terephthalate (PBT), polyphenylene oxide, polyphenylene sulfide, polyformaldehyde, phenolic resins, polytetrafluoroethylene, tetrafluoraoethylene-hexafluoropropylene copolymer, poly-trifluoro-ethylene, polyvinyl fluoride, maleic anhydride grafted polyethylene, polypropylene, Kynoar, epoxy resin, ethylene-vinyl acetate copolymer, polymethyl methacrylate, one in ethylene-acrylic acid copolymer and composition thereof.
8. the charging inlet of overheated and overcurrent protection according to claim 6, is characterized in that described conductive filler is selected from one in carbon black, graphite, carbon fiber, carbon nano-tube, metal dust, conductivity ceramics powder and composition thereof.
9. the charging inlet of overheated and overcurrent protection according to claim 8, is characterized in that described metal dust is selected from: one in copper, nickel, cobalt, iron, tungsten, tin, lead, silver, gold, platinum or its alloy and composition thereof.
10. the charging inlet of overheated and overcurrent protection according to claim 8, is characterized in that described conductivity ceramics powder is selected from: the mixture of one or more among metal nitride, metal carbides, metal boride, metal silicide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071473.5A CN104682128A (en) | 2015-02-11 | 2015-02-11 | Charging interface for overcurrent or overheating protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071473.5A CN104682128A (en) | 2015-02-11 | 2015-02-11 | Charging interface for overcurrent or overheating protection |
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| Publication Number | Publication Date |
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| CN104682128A true CN104682128A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510071473.5A Pending CN104682128A (en) | 2015-02-11 | 2015-02-11 | Charging interface for overcurrent or overheating protection |
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| CN (1) | CN104682128A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105978069A (en) * | 2016-05-27 | 2016-09-28 | 深圳天珑无线科技有限公司 | Charging method and apparatus of mobile terminal, and mobile terminal |
| CN105977728A (en) * | 2016-07-20 | 2016-09-28 | 上海长园维安电子线路保护有限公司 | Data line interface for overcurrent and overheating protection |
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| CN101887766A (en) * | 2010-07-08 | 2010-11-17 | 上海长园维安电子线路保护股份有限公司 | Conductive composite material with resistance positive temperature coefficient and over-current protection element |
| CN201927769U (en) * | 2010-12-17 | 2011-08-10 | 东莞市联升电线电缆有限公司 | Assembly of inner frame parts with fuse plug |
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2015
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Patent Citations (5)
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| CN2485833Y (en) * | 2001-04-27 | 2002-04-10 | 刘峖宏 | Socket with plug and fuse |
| CN1412782A (en) * | 2001-10-19 | 2003-04-23 | 聚鼎科技股份有限公司 | Conductive Composite Materials with Positive Temperature Coefficient |
| CN101174745A (en) * | 2006-10-19 | 2008-05-07 | 蒂科电子公司 | Subminiature electrical connector including over-voltage and over-current circuit protection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105978069A (en) * | 2016-05-27 | 2016-09-28 | 深圳天珑无线科技有限公司 | Charging method and apparatus of mobile terminal, and mobile terminal |
| CN105978069B (en) * | 2016-05-27 | 2018-09-21 | 深圳天珑无线科技有限公司 | The charging method and device and mobile terminal of mobile terminal |
| CN105977728A (en) * | 2016-07-20 | 2016-09-28 | 上海长园维安电子线路保护有限公司 | Data line interface for overcurrent and overheating protection |
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Application publication date: 20150603 |
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