CN104638712B - A kind of mobile handsets for preventing USB socket from being overheated in charging process and method - Google Patents
A kind of mobile handsets for preventing USB socket from being overheated in charging process and method Download PDFInfo
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- CN104638712B CN104638712B CN201310574150.9A CN201310574150A CN104638712B CN 104638712 B CN104638712 B CN 104638712B CN 201310574150 A CN201310574150 A CN 201310574150A CN 104638712 B CN104638712 B CN 104638712B
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- 238000001514 detection method Methods 0.000 claims abstract description 12
- 241000394635 Acetomicrobium mobile Species 0.000 claims description 2
- 206010037660 Pyrexia Diseases 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000005457 optimization Methods 0.000 description 2
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- H02J7/0091—
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Abstract
A kind of mobile handsets for preventing USB socket from being overheated in charging process, the mobile handsets include at least CPU, charging circuit and USB socket, it further includes being electrically connected with CPU to detect the detection circuit of USB socket temperature value, and CPU controls the size of current of charging circuit according to the USB socket temperature value that detection circuit is fed back.Applied to the method for above-mentioned mobile handsets, include the following steps：Mobile handsets are charged with larger current；NTC thermistor detects the temperature value of USB socket in real time；When the resistance value of NTC thermistor is varied down to threshold values or less, CPU, which controls charging circuit, reduces charging current；When the resistance value of NTC thermistor become greater to threshold values or more, CPU control charging circuits no longer reduce charging current；Otherwise, CPU controls charging circuit reduces charging current again；Charging complete.The present invention can prevent USB socket from being overheated in charging process, solve security risk.
Description
Technical field：
The present invention relates to a kind of mobile handsets for preventing USB socket from being overheated in charging process and methods.
Background technology：
Existing mobile handsets, especially intelligent machine, power consumption is fast, and the frequency of charging is higher than pervious function machine very
It is more, and charging current is big than before.When mobile handsets in use for some time, due to being plugged for a long time in charging process
The USB plug 02 of charging wire causes the USB socket 01 of mobile handsets to wear, the contact of USB plug 02 and USB socket 01
Resistance will increase, as shown in 03,04 mark in Fig. 1.After contact resistance becomes larger, it will generate heat, cause at USB socket 01
The problems such as turning to be yellow, burning at USB.
Assuming that if charging current be 1.5A, contact resistance be 1 ohm, then just will produce at USB socket P=
The power of 1.5X1.5X1=2.25W, causes USB socket to generate heat, and USB socket is for a long time using can turn yellow, burn.It is made to user
At very big security risk.
Invention content：
There is provided a kind of ambulatory handheld for preventing USB socket from being overheated in charging process dresses for the first mesh of the present invention
It sets, it can prevent USB socket from being overheated in charging process, eliminate security risk.
A kind of technical solution of mobile handsets for preventing USB socket from being overheated in charging process of the present invention
It is realized in：
A kind of mobile handsets for preventing USB socket from being overheated in charging process, the mobile handsets at least wrap
CPU, charging circuit and USB socket are included, the charging circuit is electrically connected with USB socket, and the CPU is electrically connected with charging circuit
It connects, it is characterised in that：Further include being electrically connected with CPU to detect the detection circuit of USB socket temperature value, CPU is according to detection
The size of current of the USB socket temperature value control charging circuit of electronic feedback.
A kind of mobile handsets for preventing USB socket from being overheated in charging process of the present invention and the prior art
Compared to having the following advantages that：
Mobile handsets of the present invention further include being electrically connected with CPU detecting the inspection of USB socket temperature value
Slowdown monitoring circuit, CPU controls the size of current of charging circuit according to the USB socket temperature value that detection circuit is fed back, to adaptively
The temperature value for changing USB socket, can prevent USB socket from being overheated in charging process, solve security risk.
Detection circuit described above is the thermistor set on USB socket side.
Thermistor described above is NTC thermistor.
Thermistor described above is PTC thermistor.
The second object of the present invention is to provide a kind of USB socket for preventing mobile handsets mistake in charging process
The method of heat, it can prevent USB socket from being overheated in charging process, eliminate security risk.
A kind of technical solution of method for preventing USB socket from being overheated in charging process of the present invention is such reality
Existing：
A kind of method for preventing the USB socket of mobile handsets from being overheated in charging process, the mobile handsets
For mobile handsets described above, it is characterised in that：Described method includes following steps：
A. mobile handsets are charged with larger current；
B.NTC thermistors detect the temperature value of USB socket in real time；
C. when the resistance value of NTC thermistor is varied down to threshold values or less, show that the temperature value of USB socket has reached or greatly
In its threshold value of generating heat, CPU, which controls charging circuit, reduces charging current；
D. when the resistance value of NTC thermistor become greater to threshold values or more, show the temperature value of USB socket already below its hair
Popular limit value, CPU control charging circuits no longer reduce charging current；Otherwise, CPU controls charging circuit reduces charging current again；
E. charging complete.
A kind of method for preventing USB socket from being overheated in charging process of the present invention has compared with prior art
Following advantage：
CPU controls the size of current of charging circuit according to the USB socket temperature value that NTC thermistor is fed back, to adaptive
Change the temperature value of USB socket with answering, can prevent USB socket from being overheated in charging process, solves security risk.
Description of the drawings：
The present invention is described in detail below in conjunction with the accompanying drawings：
Fig. 1 is internal circuit principle schematic of the existing mobile handsets in charging；
Fig. 2 is internal circuit principle schematic of the mobile handsets of the present invention in charging；
Fig. 3 is the particular flow sheet of the method for the present invention.
Specific implementation mode：
Embodiment one：As shown in Fig. 2, a kind of mobile handsets 1 for preventing USB socket from being overheated in charging process,
The mobile handsets 1 include at least CPU2, charging circuit 3, USB socket 4 and are electrically connected with CPU slotting to detect USB
The detection circuit 5 of seat temperature value, the charging circuit 3 are electrically connected with USB socket 4, and the CPU2 is electrically connected with charging circuit 3,
CPU2 controls the size of current of charging circuit 3 according to the USB socket temperature value that detection circuit 5 is fed back.The detection circuit 5 is to set
Thermistor in 4 side of USB socket.The thermistor is NTC thermistor.
Embodiment two：The difference is that, the thermistor is PTC thermistor with embodiment one.
As shown in figure 3, a kind of method for preventing the USB socket of mobile handsets from being overheated in charging process, the shifting
Hand-held device is the mobile handsets described in embodiment one, and described method includes following steps：
Step a, mobile handsets 1 are charged with larger current；
Step b, NTC thermistor detect the temperature value of USB socket 4 in real time；
Step c shows that the temperature value of USB socket 4 has reached when the resistance value of NTC thermistor is varied down to threshold values or less
It arrives or more than its threshold value of generating heat, CPU2, which controls charging circuit 3, reduces charging current；
Step d shows that the temperature value of USB socket 4 is low when the resistance value of NTC thermistor become greater to threshold values or more
In its threshold value of generating heat, CPU2 control charging circuits 3 no longer reduce charging current；Otherwise, CPU2 controls charging circuit 3 and reduces again
Charging current；
Step e, charging complete.
The above content is the further description in conjunction with specific embodiments to the present invention, and it cannot be said that implementing to be specific
Scheme is confined to these explanations.For those skilled in the art to which the present invention belongs, present inventive concept is not being departed from
Under the premise of, specific implementation mode of the invention is not limited to examples detailed above, specific real in the specific implementation process of the present invention
The mode of applying can also make several deductions or optimization, these are deduced or optimization all shall be regarded as belonging to protection scope of the present invention.
Claims (4)
1. a kind of mobile handsets for preventing USB socket from being overheated in charging process, the mobile handsets include at least
CPU, charging circuit and USB socket, the charging circuit are electrically connected with USB socket, and the CPU is electrically connected with charging circuit,
It is characterized in that：Further include being electrically connected with CPU to detect the detection circuit of USB socket temperature value, the detection circuit is
Thermistor set on USB socket side, CPU control the electricity of charging circuit according to the USB socket temperature value that detection circuit is fed back
Flow size.
2. a kind of mobile handsets for preventing USB socket from being overheated in charging process according to claim 1, special
Sign is：The thermistor is NTC thermistor.
3. a kind of mobile handsets for preventing USB socket from being overheated in charging process according to claim 1, special
Sign is：The thermistor is PTC thermistor.
4. a kind of method for preventing the USB socket of mobile handsets from being overheated in charging process, the mobile handsets are
Mobile handsets as claimed in claim 1 or 2, it is characterised in that：Described method includes following steps：
A. mobile handsets are charged with larger current；
B.NTC thermistors detect the temperature value of USB socket in real time；
C. when the resistance value of NTC thermistor is varied down to threshold values or less, show that the temperature value of USB socket has reached or is more than it
Fever threshold value, CPU, which controls charging circuit, reduces charging current；
D. when the resistance value of NTC thermistor become greater to threshold values or more, show the temperature value of USB socket already below its door that generates heat
Limit value, CPU control charging circuits no longer reduce charging current；Otherwise, CPU controls charging circuit reduces charging current again；
E. charging complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574150.9A CN104638712B (en) | 2013-11-15 | 2013-11-15 | A kind of mobile handsets for preventing USB socket from being overheated in charging process and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574150.9A CN104638712B (en) | 2013-11-15 | 2013-11-15 | A kind of mobile handsets for preventing USB socket from being overheated in charging process and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104638712A CN104638712A (en) | 2015-05-20 |
| CN104638712B true CN104638712B (en) | 2018-10-16 |
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| CN201310574150.9A Active CN104638712B (en) | 2013-11-15 | 2013-11-15 | A kind of mobile handsets for preventing USB socket from being overheated in charging process and method |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098884B (en) * | 2015-07-01 | 2019-03-29 | 小米科技有限责任公司 | The charging equipment and charging method of mobile terminal |
| CN105071501A (en) * | 2015-09-08 | 2015-11-18 | 上海传英信息技术有限公司 | Large-current fast charging system with temperature control function and charging method of large-current fast charging system |
| CN105785817B (en) * | 2016-03-24 | 2018-08-03 | 成都芯源系统有限公司 | Power supply circuit and power supply method |
| US10433455B2 (en) * | 2016-03-30 | 2019-10-01 | Leviton Manufacturing Co., Inc. | Wiring device with heat removal system |
| CN106124994A (en) * | 2016-06-12 | 2016-11-16 | 北京长城华冠汽车科技股份有限公司 | The battery parameter detection device of a kind of electric automobile and electric automobile |
| CN106130094B (en) * | 2016-06-29 | 2019-05-24 | 努比亚技术有限公司 | A kind of USB port charge protection device and method |
| CN106356913A (en) * | 2016-08-26 | 2017-01-25 | 珠海市魅族科技有限公司 | Electronic equipment charging control method and device |
| CN106130141A (en) * | 2016-08-26 | 2016-11-16 | 珠海市魅族科技有限公司 | A kind of charge control method, charging system and electronic equipment |
| CN106684960B (en) * | 2016-08-26 | 2019-09-24 | 珠海市魅族科技有限公司 | A kind of charge control method, charging system and electronic equipment |
| CN108370171B (en) * | 2016-09-21 | 2022-02-22 | 北京小米移动软件有限公司 | Mobile terminal, charging method and charging system |
| CN106786942A (en) * | 2016-12-30 | 2017-05-31 | 深圳天珑无线科技有限公司 | A kind of charge protection device and charging system |
| CN106685017B (en) * | 2017-03-17 | 2019-09-27 | 上海与德科技有限公司 | A kind of charge protection method and device |
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|---|---|---|---|---|
| CN103208824A (en) * | 2012-01-16 | 2013-07-17 | 华为终端有限公司 | Charging circuit and charger |
| CN203119542U (en) * | 2013-03-02 | 2013-08-07 | 曹立军 | Charger with induction system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5627392B2 (en) * | 2010-10-27 | 2014-11-19 | 京セラ株式会社 | Portable information terminal |
| US8884589B2 (en) * | 2011-09-14 | 2014-11-11 | Standard Microsystems Corporation | Method and system for power switch temperature regulation |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208824A (en) * | 2012-01-16 | 2013-07-17 | 华为终端有限公司 | Charging circuit and charger |
| CN203119542U (en) * | 2013-03-02 | 2013-08-07 | 曹立军 | Charger with induction system |
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| CN104638712A (en) | 2015-05-20 |
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Address after: 283 No. 523000 Guangdong province Dongguan city Changan town usha BBK Avenue Applicant after: VIVO MOBILE COMMUNICATION CO., LTD. Address before: 283 No. 523000 Guangdong province Dongguan city Changan town usha BBK Avenue Applicant before: ACCO ELECTRONIC SCIENCE & TECHNOLOGY CO., LTD. |
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