CN104638712A - Movable hand-held device capable of preventing USB (universal serial bus) socket from overheat during charging and method applied to movable hand-hold device - Google Patents
Movable hand-held device capable of preventing USB (universal serial bus) socket from overheat during charging and method applied to movable hand-hold device Download PDFInfo
- Publication number
- CN104638712A CN104638712A CN201310574150.9A CN201310574150A CN104638712A CN 104638712 A CN104638712 A CN 104638712A CN 201310574150 A CN201310574150 A CN 201310574150A CN 104638712 A CN104638712 A CN 104638712A
- Authority
- CN
- China
- Prior art keywords
- usb socket
- charging
- cpu
- mobile handsets
- movable hand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims description 6
- 241000394635 Acetomicrobium mobile Species 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract 3
- 230000007423 decrease Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- H02J7/0091—
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a movable hand-held device capable of preventing a USB (universal serial bus) socket from overheat during charging. The movable hand-held device at least comprises a CPU (central processing unit), a charging circuit and the USB socket and comprises a detection circuit. The detection circuit is electrically connected with the CPU and used for detecting a USB socket temperature value. The size of current of the charging circuit is controlled by the CPU according to the USB socket temperature value fed back by the detection circuit. The method applied to the movable hand-held device includes the steps of charging the movable hand-held device with large current; detecting the USB socket temperature value by an NTC (negative temperature coefficient) thermistor in real time; controlling the charging circuit to lower the charging current by the CPU when a resistance value of the NTC thermistor decreases decreased to be smaller than a threshold value; controlling the charging circuit not to lower the charging current no more when the resistance value of the NTC thermistor increases to be larger than the threshold value, or controlling the charging circuit to lower the charging current once more by the CPU; and finishing charging. The movable hand-held device and the method applied to the movable hand-held device have the advantages that the USB socket is prevented from overheat during charging, and potential safety hazards are overcome.
Description
Technical field:
The present invention relates to a kind of prevent USB socket overheated in charging process mobile handsets and method.
Background technology:
Existing mobile handsets, especially intelligent machine, its power consumption is fast, and the function machine before the frequency ratio of charging is high a lot, and charging current is large than before.When mobile handsets in use for some time, due to the USB plug 02 of plug charging wire long-term in charging process, cause the USB socket 01 of mobile handsets to be worn and torn, USB plug 02 can increase with the contact resistance of USB socket 01, as shown in 03 in Fig. 1,04 mark.When contact resistance become large after, in USB socket 01, place will generate heat, the problem such as cause USB place to be turned to be yellow, to burn.
Suppose that contact resistance is 1 ohm, so will produce the power of P=1.5X1.5X1=2.25W at USB socket place, causes USB socket to generate heat if charging current is 1.5A, USB socket use for a long time can turn yellow, burn.Very big potential safety hazard is caused to user.
Summary of the invention:
First order of the present invention there is provided a kind of mobile handsets preventing USB socket overheated in charging process, and it can prevent USB socket overheated in charging process, eliminates potential safety hazard.
A kind of technical scheme of USB socket mobile handsets overheated in charging process that prevents of the present invention is achieved in that
A kind of mobile handsets preventing USB socket overheated in charging process, this mobile handsets at least comprises CPU, charging circuit and USB socket, described charging circuit is electrically connected with USB socket, described CPU is electrically connected with charging circuit, it is characterized in that: also comprise the testing circuit in order to detect USB socket temperature value be electrically connected with CPU, CPU controls the size of current of charging circuit according to the USB socket temperature value that testing circuit feeds back.
Of the present invention a kind of prevent USB socket mobile handsets overheated in charging process compared with prior art tool have the following advantages:
Mobile handsets of the present invention, also comprise the testing circuit in order to detect USB socket temperature value be electrically connected with CPU, CPU controls the size of current of charging circuit according to the USB socket temperature value that testing circuit feeds back, thus the temperature value of adaptively modifying USB socket, USB socket can be prevented overheated in charging process, solve potential safety hazard.
Testing circuit described above is the thermistor being located at 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 method preventing the USB socket of mobile handsets overheated in charging process, and it can prevent USB socket overheated in charging process, eliminates potential safety hazard.
A kind of technical scheme of USB socket method overheated in charging process that prevents of the present invention is achieved in that
Prevent the method that the USB socket of mobile handsets is overheated in charging process, this mobile handsets is mobile handsets described above, it is characterized in that: described method comprises the steps:
A. mobile handsets charges with larger current;
B.NTC thermistor detects the temperature value of USB socket in real time;
C., when the resistance of NTC thermistor is varied down to below threshold values, show that the temperature value of USB socket has has reached or surpassed its heating threshold value, CPU controls charging circuit and reduces charging current;
D., when the resistance of NTC thermistor become greater to more than threshold values, show that the temperature value of USB socket is lower than its heating threshold value, CPU controls charging circuit and no longer reduces charging current; Otherwise CPU controls charging circuit and reduces charging current again;
E. charging complete.
Of the present invention a kind of prevent USB socket method overheated in charging process compared with prior art tool have the following advantages:
CPU controls the size of current of charging circuit according to the USB socket temperature value that NTC thermistor is fed back, thus the temperature value of adaptively modifying USB socket, USB socket can be prevented overheated in charging process, solve potential safety hazard.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is described in detail:
Fig. 1 is the internal circuit principle schematic of existing mobile handsets when charging;
Fig. 2 is the internal circuit principle schematic of mobile handsets when charging of the present invention;
Fig. 3 is the particular flow sheet of the inventive method.
Embodiment:
Embodiment one: as shown in Figure 2, a kind of mobile handsets 1 preventing USB socket overheated in charging process, the testing circuit 5 in order to detect USB socket temperature value that this mobile handsets 1 at least comprises CPU2, charging circuit 3, USB socket 4 and is electrically connected with CPU, described charging circuit 3 is electrically connected with USB socket 4, described CPU2 is electrically connected with charging circuit 3, and CPU2 controls the size of current of charging circuit 3 according to the USB socket temperature value that testing circuit 5 feeds back.Described testing circuit 5 is for being located at the thermistor of USB socket 4 side.Described thermistor is NTC thermistor.
Embodiment two: be with embodiment one difference, described thermistor is PTC thermistor.
As shown in Figure 3, a kind of method preventing the USB socket of mobile handsets overheated in charging process, this mobile handsets is the mobile handsets described in embodiment one, and described method comprises the steps:
Step a, mobile handsets 1 charges with larger current;
Step b, NTC thermistor detects the temperature value of USB socket 4 in real time;
Step c, when the resistance of NTC thermistor is varied down to below threshold values, show that the temperature value of USB socket 4 has has reached or surpassed its heating threshold value, CPU2 controls charging circuit 3 and reduces charging current;
Steps d, when the resistance of NTC thermistor become greater to more than threshold values, show that the temperature value of USB socket 4 is lower than its heating threshold value, CPU2 controls charging circuit 3 and no longer reduces charging current; Otherwise CPU2 controls charging circuit 3 and reduces charging current again;
Step e, charging complete.
Above content is in conjunction with specific embodiments to further description of the present invention, can not regard as specific embodiment and be confined to these explanations.For those skilled in the art; without departing from the inventive concept of the premise; the specific embodiment of the present invention is not limited to above-mentioned example; in specific embodiment of the invention process; embodiment can also make some deductions or optimization, and these are deduced or optimize and all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. the mobile handsets that USB socket can be prevented overheated in charging process, this mobile handsets at least comprises CPU, charging circuit and USB socket, described charging circuit is electrically connected with USB socket, described CPU is electrically connected with charging circuit, it is characterized in that: also comprise the testing circuit in order to detect USB socket temperature value be electrically connected with CPU, CPU controls the size of current of charging circuit according to the USB socket temperature value that testing circuit feeds back.
2. a kind of mobile handsets preventing USB socket overheated in charging process according to claim 1, is characterized in that: described testing circuit is the thermistor being located at USB socket side.
3. a kind of mobile handsets preventing USB socket overheated in charging process according to claim 2, is characterized in that: described thermistor is NTC thermistor.
4. a kind of mobile handsets preventing USB socket overheated in charging process according to claim 2, is characterized in that: described thermistor is PTC thermistor.
5. can prevent the method that the USB socket of mobile handsets is overheated in charging process, this mobile handsets is mobile handsets according to claim 3, it is characterized in that: described method comprises the steps:
A. mobile handsets charges with larger current;
B.NTC thermistor detects the temperature value of USB socket in real time;
C., when the resistance of NTC thermistor is varied down to below threshold values, show that the temperature value of USB socket has has reached or surpassed its heating threshold value, CPU controls charging circuit and reduces charging current;
D., when the resistance of NTC thermistor become greater to more than threshold values, show that the temperature value of USB socket is lower than its heating threshold value, CPU controls charging circuit and no longer reduces charging current; Otherwise CPU controls charging circuit and 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 true CN104638712A (en) | 2015-05-20 |
| CN104638712B CN104638712B (en) | 2018-10-16 |
Family
ID=53217161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104638712B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105098884A (en) * | 2015-07-01 | 2015-11-25 | 小米科技有限责任公司 | Charging device and charging method for mobile terminal |
| CN105785817A (en) * | 2016-03-24 | 2016-07-20 | 成都芯源系统有限公司 | Power supply circuit and power supply method |
| 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 |
| 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 |
| CN106130094A (en) * | 2016-06-29 | 2016-11-16 | 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 |
| CN106684960A (en) * | 2016-08-26 | 2017-05-17 | 珠海市魅族科技有限公司 | Charging control method, charging system and electronic equipment |
| CN106685017A (en) * | 2017-03-17 | 2017-05-17 | 上海与德科技有限公司 | Charging protection method and device |
| 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 |
| CN108370171A (en) * | 2016-09-21 | 2018-08-03 | 北京小米移动软件有限公司 | mobile terminal, charging method and charging system |
| US20190387639A1 (en) * | 2016-03-30 | 2019-12-19 | Leviton Manufacturing Co., Inc. | Wiring device with heat removal system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012094695A (en) * | 2010-10-27 | 2012-05-17 | Kyocera Corp | Portable information terminal |
| US20130063098A1 (en) * | 2011-09-14 | 2013-03-14 | Standard Microsystems Corporation | Method and system for power switch temperature regulation |
| 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 |
-
2013
- 2013-11-15 CN CN201310574150.9A patent/CN104638712B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012094695A (en) * | 2010-10-27 | 2012-05-17 | Kyocera Corp | Portable information terminal |
| US20130063098A1 (en) * | 2011-09-14 | 2013-03-14 | Standard Microsystems Corporation | Method and system for power switch temperature regulation |
| 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 |
Cited By (17)
| 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 |
| CN105098884A (en) * | 2015-07-01 | 2015-11-25 | 小米科技有限责任公司 | Charging device and charging method for 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 |
| CN105785817A (en) * | 2016-03-24 | 2016-07-20 | 成都芯源系统有限公司 | Power supply circuit and power supply method |
| US20190387639A1 (en) * | 2016-03-30 | 2019-12-19 | 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 |
| CN106130094A (en) * | 2016-06-29 | 2016-11-16 | 努比亚技术有限公司 | A kind of USB port charge protection device and method |
| 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 |
| 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 |
| CN106684960A (en) * | 2016-08-26 | 2017-05-17 | 珠海市魅族科技有限公司 | Charging 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 |
| 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 |
| CN108370171A (en) * | 2016-09-21 | 2018-08-03 | 北京小米移动软件有限公司 | mobile terminal, charging method and charging system |
| 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 |
| CN106685017A (en) * | 2017-03-17 | 2017-05-17 | 上海与德科技有限公司 | Charging protection method and device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104638712B (en) | 2018-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104638712A (en) | Movable hand-held device capable of preventing USB (universal serial bus) socket from overheat during charging and method applied to movable hand-hold device | |
| CN105471008A (en) | Information processing method, first electronic equipment and second electronic equipment | |
| CN111319490A (en) | Charging pile safety protection method based on temperature difference and charging control device thereof | |
| CN106100027A (en) | Charger and the short-circuit protection circuit for charging inlet | |
| CN201845243U (en) | Temperature controller | |
| CN204597141U (en) | A kind of smart jack with overheat protector function | |
| WO2020124978A1 (en) | Method for adjusting power of electric water heater, and electric water heater | |
| CN206254820U (en) | Fire prevention charging pile with independent function for monitoring | |
| CN105071501A (en) | Large-current fast charging system with temperature control function and charging method of large-current fast charging system | |
| CN101847022A (en) | Temperature controller | |
| CN203818409U (en) | Vulcanizing machine heater | |
| WO2016165349A1 (en) | Charging method and device | |
| CN103439994B (en) | PTC/NTC dual control temperature control devices | |
| CN106123355A (en) | If the electric heater of electric leakage device | |
| CN205452705U (en) | Overheated intelligent protection device that overflows | |
| CN204289919U (en) | Overtemperature protection data transmission device | |
| CN204460668U (en) | A kind of dry combustion preventing electric water heater | |
| CN205264967U (en) | 86 type sockets on anticreep type of detectable terminal temperature | |
| CN203326572U (en) | Mining motor protection device | |
| CN103985553A (en) | Novel super capacitor | |
| CN204168129U (en) | A kind of low temperature input soft-start circuit | |
| CN203466992U (en) | Energy-saving electric blanket heating device | |
| CN201388121Y (en) | Motor used for fan-coil unit | |
| CN207338104U (en) | The protection circuit that a kind of transformer is contactless | |
| CN204496425U (en) | A kind of computing machine soft-start circuit device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
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. |
|
| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |