CN102546957A - Overload self-protection mobile phone - Google Patents
Overload self-protection mobile phone Download PDFInfo
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- CN102546957A CN102546957A CN2012100392850A CN201210039285A CN102546957A CN 102546957 A CN102546957 A CN 102546957A CN 2012100392850 A CN2012100392850 A CN 2012100392850A CN 201210039285 A CN201210039285 A CN 201210039285A CN 102546957 A CN102546957 A CN 102546957A
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- mobile phone
- resettable fuse
- electrically connected
- battery
- fuse
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Abstract
The invention provides an overload self-protection mobile phone, which comprises a mobile phone main circuit board, wherein the main circuit board is provided with a main power input end and a main power output end. The mobile phone further comprises a resettable fuse, wherein one connecting terminal of the resettable fuse is electrically connected with the main power input end, and the other connecting terminal of the resettable fuse is electrically connected with the cathode of a battery of the mobile phone; or, one connecting terminal of the resettable fuse is electrically connected with the main power output end, and the other connecting terminal of the resettable fuse is electrically connected with the anode of the battery of the mobile phone. The overload self-protection mobile phone has the resettable fuse, and when total current in a circuit is higher than safe current, the resettable fuse automatically shifts to an off state to protect an electronic component from the impact of high current and avoid the mobile phone failing due to the burn-out of the electronic component.
Description
Technical field
The present invention relates to mobile phone technique, relate in particular to a kind of overload self-shield mobile phone.
Background technology
Mobile phone has become the communication tool that can not obtain in the people in modern daily life because of possessing ability to communicate easily.Mobile phone is as microelectronic product, and its inner electronic component is responsive to voltage, current ratio.When adopting battery of mobile phone that mobile phone is supplied power, if the unusual suddenly change of the voltage of battery of mobile phone is big, makes unusual suddenly the change greatly of electric current of the electronic component of flowing through in the mobile phone, and burn electronic component, cause the mobile phone fault; Or, because of reasons such as water inlet cause short circuit in the mobile phone, become big but electric current is unusual suddenly, and burn electronic component, cause the mobile phone fault.
Summary of the invention
The present invention provides a kind of overload self-shield mobile phone, in order to solve in the existing mobile phone, becomes big because of electric current is unusual suddenly, and burns electronic component, causes the problem of mobile phone fault.
The present invention provides a kind of overload self-shield mobile phone; Comprise the mobile phone main circuit board; Said main circuit board has power supply primary input end and power supply master output; Said mobile phone also comprises resettable fuse, and terminals of said resettable fuse are electrically connected with said power supply primary input end, another terminals are used for is connected with the positive electrical of battery of mobile phone; Perhaps,
Terminals of said resettable fuse are electrically connected with said power supply master output, another terminals are used for is connected with the negative electricity of battery of mobile phone.
Aforesaid overload self-shield mobile phone, wherein, the breaking current of said resettable fuse is at 200mA to 400mA.
Aforesaid overload self-shield mobile phone wherein, also comprises: battery of mobile phone;
When terminals of said resettable fuse were electrically connected with said power supply primary input end, the positive pole of said battery of mobile phone was electrically connected with another terminals of said resettable fuse;
When terminals of said resettable fuse were electrically connected with said power supply master output, the negative of said battery of mobile phone was electrically connected with another terminals of said resettable fuse.
Overload self-shield mobile phone provided by the invention; Has resettable fuse; When the total current in the circuit during greater than the breaking current of resettable fuse; Resettable fuse is automatically changeb to off state, and the protection electronic component is avoided the impact of big electric current, avoids being caused the mobile phone fault because of electronic component burns.
Description of drawings
Fig. 1 transships the circuit theory diagrams of self-shield mobile phone for the present invention;
Fig. 2 transships another circuit theory diagrams of self-shield mobile phone for the present invention.
Embodiment
Fig. 1 transships the circuit theory diagrams of self-shield mobile phone for the present invention; As shown in Figure 1; The embodiment of self-shield mobile phone is transshipped in the present invention; This mobile phone comprises mobile phone main circuit board (for ease of describing and drawing, being a mobile phone impedance R with the equivalence of mobile phone main circuit board), and main circuit board has power supply primary input end and power supply master output; This mobile phone also comprises resettable fuse FUSE, and the terminals of resettable fuse FUSE are electrically connected with power supply primary input end, another terminals are used for is electrically connected with the positive pole 1 of battery of mobile phone 2.
Overload self-shield mobile phone provided by the invention; Has resettable fuse FUSE; When the total current in the circuit during greater than the breaking current of resettable fuse; Resettable fuse FUSE is automatically changeb to off state, and the protection electronic component is avoided the impact of big electric current, avoids being caused the mobile phone fault because of electronic component burns.
Resettable fuse FUSE adopts the polyphosphazene polymer resin at high pressure, high temperature, under the condition of vulcanization reaction, dash with the conductive nano crystalline material after, form through special processes.Under the normal condition, the conductive nano crystal forms chain conductive path, resettable fuse FUSE operate as normal with the resin-based link; When mobile phone circuit was short-circuited or transships, the big electric current of the fuse of flowing through made its collection temperature rise, when reaching Curie temperature; Its density of states reduces rapidly, and phase transformation increases, and inner electrically conductive links is change of snowslide attitude or fracture; Fuse is phase step type and transits to high-impedance state; Electric current is by rapid pinch off, thereby circuit is limited fast and accurately and protects, and avoids burning electronic component and mobile phone is broken down.After outage and fault eliminating, the collection temperature drop of resettable fuse FUSE is low, and the density of states increases, and phase transformation is restored, and nanocrystal is reduced into the chain conductive path, and resettable fuse FUSE reverts to normal condition, and this moment, mobile phone can use again normally.
Based on the foregoing description, as shown in Figure 2, the difference of this embodiment and the foregoing description is that the terminals of resettable fuse FUSE are electrically connected with power supply master output, another terminals are used for is electrically connected with the negative pole 3 of battery of mobile phone 2.The positive pole 1 of battery of mobile phone 2 is electrically connected with power supply primary input end.
In mobile phone circuit, starup current is generally at 60mA to 300mA, and emission current is generally at 200mA to 400mA; Standby current is at 12mA to 50mA, can operate as normal for making mobile phone, and then the breaking current of resettable fuse is at 200mA to 400mA; And the breaking current that guarantees resettable fuse is slightly larger than the peak value of emission current; For example, the peak value of emission current is 260mA, then the breaking current of resettable fuse can but be not limited to select 265mA.Certainly, the breaking current of resettable fuse can be confirmed according to the equivalent mobile phone impedance of mobile phone main circuit board.For the mobile phone of different model, its operating voltage is generally identical, then has the equivalent mobile phone impedance of mobile phone main circuit board to come to obtain respectively starup current, emission current and the standby current of mobile phone, is illustrated with table 1 below.
Table 1
In addition, based on above-mentioned each embodiment, the present invention is transshipped the self-shield mobile phone and can also be comprised battery of mobile phone, and the annexation of battery of mobile phone and resettable fuse can repeat no more referring to above-mentioned each embodiment here.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (3)
1. overload self-shield mobile phone; Comprise the mobile phone main circuit board; Said main circuit board has power supply primary input end and power supply master output; It is characterized in that said mobile phone also comprises resettable fuse, terminals of said resettable fuse are electrically connected with said power supply primary input end, another terminals are used for is connected with the positive electrical of battery of mobile phone; Perhaps,
Terminals of said resettable fuse are electrically connected with said power supply master output, another terminals are used for is connected with the negative electricity of battery of mobile phone.
2. overload self-shield mobile phone according to claim 1 is characterized in that the breaking current of said resettable fuse is at 200mA to 400mA.
3. overload self-shield mobile phone according to claim 1 and 2 is characterized in that, also comprises: battery of mobile phone;
When terminals of said resettable fuse were electrically connected with said power supply primary input end, the positive pole of said battery of mobile phone was electrically connected with another terminals of said resettable fuse;
When terminals of said resettable fuse were electrically connected with said power supply master output, the negative of said battery of mobile phone was electrically connected with another terminals of said resettable fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100392850A CN102546957A (en) | 2012-02-20 | 2012-02-20 | Overload self-protection mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100392850A CN102546957A (en) | 2012-02-20 | 2012-02-20 | Overload self-protection mobile phone |
Publications (1)
| Publication Number | Publication Date |
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| CN102546957A true CN102546957A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012100392850A Pending CN102546957A (en) | 2012-02-20 | 2012-02-20 | Overload self-protection mobile phone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786343A (en) * | 2016-11-25 | 2017-05-31 | 北京小米移动软件有限公司 | Smart machine with waterproofing protection |
Citations (7)
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| JP2005253218A (en) * | 2004-03-05 | 2005-09-15 | Nec Saitama Ltd | Power supply control circuit |
| CN1953262A (en) * | 2005-10-22 | 2007-04-25 | 富港电子（东莞）有限公司 | Portable chargeable back-up cell |
| US20070103834A1 (en) * | 2005-11-07 | 2007-05-10 | Chun-Wei Huang | Circuit for charging protection with enhanced overcurrent protection circuitry |
| CN101595546A (en) * | 2005-06-02 | 2009-12-02 | 力特保险丝有限公司 | Overtemperature protection system, application and circuit |
| CN201657083U (en) * | 2010-03-18 | 2010-11-24 | 中兴通讯股份有限公司 | Electronic waterproof protection circuit as well as electronic waterproof terminal |
| CN201927682U (en) * | 2011-01-10 | 2011-08-10 | 东莞市华信电源科技有限公司 | Septuple-protection lithium ion battery set |
| CN202103067U (en) * | 2011-04-19 | 2012-01-04 | 上海臻和防雷电气技术有限责任公司 | Over-voltage prevention solar cell panel |
-
2012
- 2012-02-20 CN CN2012100392850A patent/CN102546957A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005253218A (en) * | 2004-03-05 | 2005-09-15 | Nec Saitama Ltd | Power supply control circuit |
| CN101595546A (en) * | 2005-06-02 | 2009-12-02 | 力特保险丝有限公司 | Overtemperature protection system, application and circuit |
| CN1953262A (en) * | 2005-10-22 | 2007-04-25 | 富港电子（东莞）有限公司 | Portable chargeable back-up cell |
| US20070103834A1 (en) * | 2005-11-07 | 2007-05-10 | Chun-Wei Huang | Circuit for charging protection with enhanced overcurrent protection circuitry |
| CN201657083U (en) * | 2010-03-18 | 2010-11-24 | 中兴通讯股份有限公司 | Electronic waterproof protection circuit as well as electronic waterproof terminal |
| CN201927682U (en) * | 2011-01-10 | 2011-08-10 | 东莞市华信电源科技有限公司 | Septuple-protection lithium ion battery set |
| CN202103067U (en) * | 2011-04-19 | 2012-01-04 | 上海臻和防雷电气技术有限责任公司 | Over-voltage prevention solar cell panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786343A (en) * | 2016-11-25 | 2017-05-31 | 北京小米移动软件有限公司 | Smart machine with waterproofing protection |
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| PB01 | Publication | ||
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Application publication date: 20120704 |