CN208285039U - Charge protector and mobile terminal - Google Patents
Charge protector and mobile terminal Download PDFInfo
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- CN208285039U CN208285039U CN201820749909.0U CN201820749909U CN208285039U CN 208285039 U CN208285039 U CN 208285039U CN 201820749909 U CN201820749909 U CN 201820749909U CN 208285039 U CN208285039 U CN 208285039U
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- temperature
- detection branch
- temperature detection
- mobile terminal
- mould group
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Abstract
The utility model relates to technical field of electronic products, a kind of charge protector and mobile terminal are disclosed.In the utility model embodiment, charge protector includes: the first temperature detection branch, second temperature detection branch, signal processing mould group；Preset high-temperature area is arranged on mainboard in first temperature detection branch；Preset charging interface region is arranged on mainboard in second temperature detection branch；Charging interface is mounted in charging interface region；First temperature detection branch and second temperature detection branch are connected to signal processing mould group；Signal processing mould group is used to receive mainboard temperature from the first temperature detection branch, determines whether that forbidden moves terminal is charged by charging interface from second temperature detection branch receiving interface temperature, and according to interface temperature and mainboard temperature.The utility model embodiment additionally provides a kind of mobile terminal.The utility model can intercept charge power supply inferior with effective protection mobile terminal, improve the safety of mobile terminal.
Description
Technical field
The utility model relates to technical field of electronic products, in particular to a kind of charge protector and mobile terminal.
Background technique
The mobile terminals such as mobile phone, tablet computer are widely used in daily life, and with the communication technology
Development, the function of mobile terminal is stronger and stronger and frequency of use is higher and higher, is charged to for mobile terminal in order to a kind of common
Operation.
In existing all kinds of occasions, charger is a kind of very common accessory, but the quality of charger is very different, has very
The unknown charger inferior of multi-user exists；When user need for mobile terminal charging and without carrying standard configuration charger when,
Most users, which are seen to be inserted on mobile terminal with the presence of charger, to charge, will be great if it is charger inferior
The safety for threatening mobile terminal causes mobile terminal impaired.Inventor is existing to exist in the prior art following problem: currently,
Increased Anti-surging device, can only intercept the surge of moment on charging interface, but have no ability to intercept charger input inferior
Power supply inferior, measure cannot be effectively protected so as to cause mobile terminal, bring loss for user.
Utility model content
The purpose of this utility model is to provide a kind of charge protector and mobile terminals, can intercept charging electricity inferior
Source the safety of mobile terminal is improved with effective protection mobile terminal.
In order to solve the above technical problems, the embodiments of the present invention provides a kind of charge protector, it is applied to
Mobile terminal including mainboard and charging interface；The charge protector includes: the first temperature detection branch, second temperature inspection
Survey branch, signal processing mould group；Preset high-temperature area on the main board is arranged in the first temperature detection branch, and is used for
Detect mainboard temperature；Preset charging interface region on the main board is arranged in the second temperature detection branch, and for examining
Survey interface temperature；The charging interface is mounted in the charging interface region；The first temperature detection branch and described the
Two temperature detection branches are connected to the signal processing mould group；The signal processing mould group is used to examine from first temperature
It surveys branch to receive the mainboard temperature, receive the interface temperature from the second temperature detection branch, and according to the interface
Temperature with the mainboard temperature determines whether that the mobile terminal is forbidden to charge by the charging interface.
The embodiments of the present invention provides a kind of mobile terminal, includes: above-mentioned charge protector.
The utility model embodiment in terms of existing technologies, provide it is a kind of include the first temperature detection branch,
The charge protector of second temperature detection branch and signal processing mould group, for detecting the first temperature detection of mainboard temperature
Branch is connected to signal processing mould group with the second temperature detection branch for detecting interface temperature, thus signal processing mould
Group can determine whether that forbidden moves terminal is charged by charging interface according to the mainboard temperature and interface temperature received, that is, believe
Number processing mould group can (namely mobile terminal is in abnormal charged state) abnormal in interface temperature when no thoroughfare charging
Mouth is that mobile terminal charges, to realize that the interception to charge power supply inferior with effective protection mobile terminal, improves mobile whole
The safety at end.
In addition, the first temperature detection branch includes the first temperature detector and the first divider resistance interconnected, and position
The first test side between first temperature detector and first divider resistance is connected to the signal processing mould group；
The second temperature detection branch includes second temperature detector and the second divider resistance interconnected, and is located at described second
The second test side between temperature detector and second divider resistance is connected to the signal processing mould group.The present embodiment
In, each provide a kind of implementation of the first temperature detection branch Yu second temperature detection branch.
In addition, signal processing mould group includes operational amplifier and electronic switch；The first input end of the operational amplifier
It is connected to the first temperature detection branch, the second input terminal of the operational amplifier is connected to the second temperature detection branch
Road, the output end of the operational amplifier are connected to the grid of the electronic switch；The source level of the electronic switch is connected to institute
State the power pin of charging interface, the grounded drain of the electronic switch.The operational amplifier is from first temperature detection
Branch receives the mainboard temperature, receives the interface temperature from the second temperature detection branch, and according to the mainboard temperature
Degree exports activation signal with the interface temperature, described to forbid the mobile terminal to pass through to control the electronic switch opening
Charging interface charging, or the control electronic switch are closed to allow the mobile terminal to charge by the charging interface.This
In embodiment, a kind of specific implementation of signal processing mould group is provided.
In addition, the first temperature detector is thermistor, one of in temperature sensor；The second temperature detection
Device is thermistor, one of in temperature sensor.In the present embodiment, the first temperature detector and second are each provided
Two kinds of concrete types of temperature detector.
In addition, operational amplifier is for phase inverter or with phase device；The electronic switch is NMOS tube or PMOS tube.The present embodiment
In, each provide the two types of operational amplifier and electronic switch.
In addition, the first temperature detector is identical with the second temperature detector.In the present embodiment, identical first
Temperature detector and second temperature detector can reduce temperature error, to further increase the accuracy of detection.
In addition, being at least equipped with the primary processor of the mobile terminal in the preset high-temperature area.In the present embodiment,
Provide a kind of specific location of high-temperature area.
In addition, the distance between second temperature detection branch and the charging interface are less than 10 millimeters.
In addition, mobile terminal further includes processor and information alert device；The signal output end of the signal processing mould group with
The information alert device is connected to the processor；The processor is used to forbid in the signal processing mould group described mobile whole
When end is charged by the charging interface, controls the information alert device and generate prompt information.In the present embodiment, information alert device
Prompt information is generated when charging abnormal, so that user be prompted to take other charging measures.
Detailed description of the invention
Fig. 1 is the schematic diagram of charge protector according to first embodiment；
Fig. 2 is the schematic diagram according to the charge protector of second embodiment；
Fig. 3 is a kind of schematic diagram according to the charge protector of third embodiment；
Fig. 4 is another schematic diagram according to the charge protector of third embodiment；
Fig. 5 is another schematic diagram according to the charge protector of third embodiment；
Fig. 6 is the schematic diagram according to the mobile terminal of the 4th embodiment.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Each embodiment of type is explained in detail.However, it will be understood by those skilled in the art that each in the utility model
In embodiment, in order to make the reader understand this application better, many technical details are proposed.But even if without these skills
The required guarantor of each claim of the application also may be implemented in art details and various changes and modifications based on the following respective embodiments
The technical solution of shield.
The first embodiment of the utility model is related to a kind of charge protector, is applied to include mainboard and charging interface
Mobile terminal, such as mobile phone；As shown in Figure 1, charge protector includes: the first temperature detection branch 1, second temperature detection
Branch 2, signal processing mould group 3.
In present embodiment, preset high-temperature area is arranged on mainboard in the first temperature detection branch 1, and for detecting master
Plate temperature；Preset charging interface region is arranged on mainboard in second temperature detection branch 2, and for detecting interface temperature；It fills
Electrical interface is mounted in charging interface region.First temperature detection branch 1 is connected to signal with second temperature detection branch 2
Handle mould group 3.
In present embodiment, signal processing mould group 3 is used to receive mainboard temperature from the first temperature detection branch 1, from second
2 receiving interface temperature of temperature detection branch, and determine whether forbidden moves terminal by filling according to interface temperature and mainboard temperature
Electrical interface charging.
In terms of existing technologies, provide a kind of includes the first temperature detection branch, second temperature to present embodiment
The charge protector of detection branch and signal processing mould group, for detecting the first temperature detection branch of mainboard temperature and using
It is connected to signal processing mould group in the second temperature detection branch of detection interface temperature, so that signal processing mould group being capable of root
Determine whether that forbidden moves terminal is charged by charging interface according to the mainboard temperature and interface temperature that receive, i.e. signal processing mould
Group can (namely mobile terminal is in abnormal charged state) abnormal in interface temperature when no thoroughfare that charging interface is movement
Terminal charge improves the safety of mobile terminal to realize to the interception of charge power supply inferior with effective protection mobile terminal
Property.
The realization details of the charge protector of present embodiment is specifically described below, the following contents is only side
The realization details of offer is just provided, the necessary of this programme is not implemented.
In present embodiment, the distance between second temperature detection branch 2 and charging interface are less than 10 millimeters；This right implementation
Example is not intended to be limited in any this, and the specific distance between second temperature detection branch 2 and charging interface can be set according to the actual situation
It is fixed.
In fact, the first temperature detection branch and second temperature detection branch are also respectively connected in feeder ear 4.Feeder ear 4
For example, cell voltage end (end VBAT), so without being limited thereto in practice, the present embodiment is not intended to be limited in any feeder ear, can also be with
It is other for electric pin.
The second embodiment of the utility model is related to a kind of charge protector.Second embodiment is in the first embodiment party
It improves on the basis of formula, mainly thes improvement is that: in this second embodiment, providing one kind of charge protector
Specific implementation.
In present embodiment, as shown in Fig. 2, the first temperature detection branch 1 includes the first temperature detector interconnected
11 and first divider resistance 12, and the first test side connection between the first temperature detector 11 and the first divider resistance 12
In signal processing mould group 3；Second temperature detection branch 2 includes second temperature detector 21 interconnected and the second divider resistance
22, and the second test side between second temperature detector 21 and the second divider resistance 22 is connected to signal processing mould group 3.
In one example, the first temperature detector is thermistor, one of in temperature sensor；Wherein, hot
Quick resistance can be PTC thermistor or NTC thermistor (price is more cheap, and cost is relatively low), and the present embodiment is to the first temperature
The concrete type of degree detector is not intended to be limited in any, and can be selected according to actual needs.
In one example, second temperature detector is thermistor, one of in temperature sensor；Likewise,
Thermistor can be PTC thermistor or NTC thermistor (price is more cheap, and cost is relatively low), and the present embodiment is to second
The concrete type of temperature detector is not intended to be limited in any, and can be selected according to actual needs.
Preferably, the first temperature detector is identical with second temperature detector；Such as the attributes such as specification, model are complete
It is identical, to reduce temperature error.
For present embodiment for first embodiment, the first temperature detection branch includes the first temperature interconnected
Detector and the first divider resistance are spent, second temperature detection branch includes including second temperature detector interconnected and second
Divider resistance；Provide a kind of implementation of temperature detection branch.
The third embodiment of the utility model is related to a kind of charge protector.Third embodiment is in the second embodiment party
It improves on the basis of formula, mainly thes improvement is that: in the third embodiment, as shown in figure 3, signal processing mould group 3
Including operational amplifier 31 and electronic switch 32.
In present embodiment, the first input end of operational amplifier 31 is connected to the first temperature detection branch 1, operation amplifier
Second input terminal of device 31 is connected to second temperature detection branch 2, and the output end of operational amplifier 31 is connected to electronic switch 32
Grid；The source level of electronic switch 32 is connected to the power pin 5 of charging interface, the grounded drain of electronic switch 32.
In present embodiment, operational amplifier 31 receives mainboard temperature from the first temperature detection branch 1, examines from second temperature
2 receiving interface temperature of branch is surveyed, and activation signal is exported according to mainboard temperature and interface temperature, to control the opening of electronic switch 32
Carry out forbidden moves terminal to charge by charging interface, or control electronic switch 32 is closed to allow mobile terminal to pass through charging interface
Charging.
In one example, as shown in figure 3, operational amplifier 31 is phase inverter, electronic switch 32 is NMOS tube；Work as reverse phase
The interface temperature that device receives be higher than mainboard temperature, and be higher than predetermined threshold value when, pass through phase inverter export inversion signal, NMOS
Pipe is switched on, and power pin 5 is short-circuited to ground, i.e. the input power of charging interface is closed, and forbidden moves terminal passes through charging
Interface charging.
In one example, as shown in figure 3, the first temperature detector 11 is the first thermistor (NTC type), second temperature
Detector 21 is the second thermistor (NTC type), and feeder ear is the end VBAT, and operational amplifier 31 is phase inverter, electronic switch 32
For NMOS tube, NTC type thermistor is 10 kilohms (under 25 degree of room temperature), and the first divider resistance 12 is 10 kilohms, second point
Piezoresistance 22 is 5.1 kilohms.When original state, the voltage U of the first thermistor11For 0.5VBAT, the electricity of the second thermistor
Press U12For 0.33VBAT, U at this time11Greater than U12, phase inverter exports low level, and NMOS tube is in close state；When in interface temperature
It rises, when the second thermistor resistance decrease is to 5.1 kilohms, at this point, U12Greater than U11, phase inverter output high level, NMOS tube quilt
Conducting, power pin 5 are short-circuited to ground.It is so here exemplary illustration, it is without being limited thereto in practice.
In one example, as shown in figure 4, operational amplifier 31 is with phase device, electronic switch 32 is NMOS tube；When same phase
The interface temperature that device receives be higher than mainboard temperature, and be higher than predetermined threshold value when, pass through same phase device export in-phase signal, NMOS
Pipe is switched on, and power pin 5 is short-circuited to ground, i.e. the input power of charging interface is closed, and forbidden moves terminal passes through charging
Interface charging.
In one example, as shown in figure 5, operational amplifier 31 is phase inverter, electronic switch 32 is PMOS tube；Work as reverse phase
The interface temperature that device receives be higher than mainboard temperature, and be higher than predetermined threshold value when, pass through phase inverter export inversion signal, PMOS
Pipe is switched on, and power pin 5 is short-circuited to ground, i.e. the input power of charging interface is closed, and forbidden moves terminal passes through charging
Interface charging.
In fact, present embodiment may be improvement project on the basis of first embodiment.
For present embodiment for second embodiment, signal processing mould group includes operational amplifier and electronic cutting
It closes, that is, provides a kind of specific implementation of signal processing mould group.
The 4th embodiment of the utility model is related to a kind of mobile terminal, such as mobile phone, comprising: first embodiment to
Charge protector in three embodiments in any embodiment.
In terms of existing technologies, mobile terminal includes charger provided by the embodiment of the utility model to present embodiment
Protection circuit, in the charge protector, for detect the first temperature detection branch of mainboard temperature with for detecting interface temperature
Second temperature detection branch be connected to signal processing mould group, so that signal processing mould group can be according to the mainboard received
Temperature and interface temperature determine whether that forbidden moves terminal is charged by charging interface, i.e., signal processing mould group can be in interface temperature
No thoroughfare when degree abnormal (namely mobile terminal is in abnormal charged state), and charging interface is mobile terminal charging, thus real
The safety of mobile terminal now is improved with effective protection mobile terminal to the interception of charge power supply inferior.
The realization details of the charge protector of present embodiment is specifically described below, the following contents is only side
The realization details of offer is just provided, the necessary of this programme is not implemented.
Preferably, as shown in fig. 6, mobile terminal further includes processor 6 and information alert device 7 in present embodiment.Signal
The signal output end and information alert device 7 for handling mould group 3 are connected to processor 6；Processor 6 is used to prohibit in signal processing mould group 3
When only mobile terminal is charged by charging interface, control information alert device 7 generates prompt information, to prompt user that other is taken to fill
Electric measure.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific implementation of the utility model
Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model
And range.
Claims (10)
1. a kind of charge protector, which is characterized in that applied to the mobile terminal including mainboard and charging interface；The charging
Protecting circuit includes: the first temperature detection branch, second temperature detection branch, signal processing mould group；
Preset high-temperature area on the main board is arranged in the first temperature detection branch, and for detecting mainboard temperature；Institute
Second temperature detection branch setting preset charging interface region on the main board is stated, and for detecting interface temperature；It is described
Charging interface is mounted in the charging interface region；
The first temperature detection branch and the second temperature detection branch are connected to the signal processing mould group；
The signal processing mould group is used to receive the mainboard temperature from the first temperature detection branch, from the second temperature
Detection branch receives the interface temperature, and determines whether to forbid the movement according to the interface temperature and the mainboard temperature
Terminal is charged by the charging interface.
2. charge protector according to claim 1, which is characterized in that the first temperature detection branch includes mutual
The first temperature detector and the first divider resistance of connection, and it is located at first temperature detector and first divider resistance
Between the first test side be connected to the signal processing mould group；
The second temperature detection branch includes second temperature detector and the second divider resistance interconnected, and is located at described
The second test side between second temperature detector and second divider resistance is connected to the signal processing mould group.
3. charge protector according to claim 1, which is characterized in that the signal processing mould group includes operation amplifier
Device and electronic switch；
The first input end of the operational amplifier is connected to the first temperature detection branch, and the second of the operational amplifier
Input terminal is connected to the second temperature detection branch, and the output end of the operational amplifier is connected to the grid of the electronic switch
Pole；
The source level of the electronic switch is connected to the power pin of the charging interface, the grounded drain of the electronic switch；
The operational amplifier receives the mainboard temperature from the first temperature detection branch, detects branch from the second temperature
Road receives the interface temperature, and exports activation signal according to the mainboard temperature and the interface temperature, to control the electricity
Sub switch is opened to forbid the mobile terminal to charge by the charging interface, or the control electronic switch is closed to allow
The mobile terminal is charged by the charging interface.
4. charge protector according to claim 2, which is characterized in that first temperature detector is temperature-sensitive electricity
One of in resistance, temperature sensor；
The second temperature detector is thermistor, one of in temperature sensor.
5. charge protector according to claim 3, which is characterized in that the operational amplifier is phase inverter or same phase
Device；
The electronic switch is NMOS tube or PMOS tube.
6. charge protector according to claim 2, which is characterized in that first temperature detector and described second
Temperature detector is identical.
7. charge protector according to claim 1, which is characterized in that at least installed in the preset high-temperature area
There is the primary processor of the mobile terminal.
8. charge protector according to claim 1, which is characterized in that the second temperature detection branch is filled with described
The distance between electrical interface is less than 10 millimeters.
9. a kind of mobile terminal characterized by comprising charge protector described in any one of claims 1 to 8.
10. mobile terminal according to claim 9, which is characterized in that the mobile terminal further includes processor and information
Prompting device；
The signal output end of the signal processing mould group and the information alert device are connected to the processor；
The processor is used for the control when the signal processing mould group forbids the mobile terminal to charge by the charging interface
It makes the information alert device and generates prompt information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820749909.0U CN208285039U (en) | 2018-05-18 | 2018-05-18 | Charge protector and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820749909.0U CN208285039U (en) | 2018-05-18 | 2018-05-18 | Charge protector and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208285039U true CN208285039U (en) | 2018-12-25 |
Family
ID=64729053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820749909.0U Active CN208285039U (en) | 2018-05-18 | 2018-05-18 | Charge protector and mobile terminal |
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| Country | Link |
|---|---|
| CN (1) | CN208285039U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571758A (en) * | 2019-08-05 | 2019-12-13 | 深圳市万普拉斯科技有限公司 | USB interface protection circuit, method, adapter and electronic equipment |
-
2018
- 2018-05-18 CN CN201820749909.0U patent/CN208285039U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571758A (en) * | 2019-08-05 | 2019-12-13 | 深圳市万普拉斯科技有限公司 | USB interface protection circuit, method, adapter and electronic equipment |
| CN110571758B (en) * | 2019-08-05 | 2022-03-18 | 深圳市万普拉斯科技有限公司 | USB interface protection circuit, method, adapter and electronic equipment |
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