CN106026259A - Charging control circuit and charging device of electronic equipment - Google Patents
Charging control circuit and charging device of electronic equipment Download PDFInfo
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- CN106026259A CN106026259A CN201610469637.4A CN201610469637A CN106026259A CN 106026259 A CN106026259 A CN 106026259A CN 201610469637 A CN201610469637 A CN 201610469637A CN 106026259 A CN106026259 A CN 106026259A
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- power supply
- switching tube
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to the field of electronic equipment, and provides a charging control circuit and charging device of electronic equipment. The charging control circuit of the electronic equipment provided by the embodiment of the invention comprises a master control module and a temperature detection module, wherein an input end of the master control module is connected with a charging power supply to control on or off of the charging power supply; the input end of the temperature collection module is connected with the charging power supply and an output end is connected with a control terminal of the master control module; a control signal is output to the master control module when the condition that the temperature of the charging power supply is greater than a preset temperature threshold is detected; and the control circuit controls the charging power supply to be cut off, so that the charging control circuit of the electronic equipment is safer; and the charging safety level is improved.
Description
Technical field
The invention belongs to electronic device field, particularly relate to charging control circuit and the charging device of a kind of electronic equipment.
Background technology
Along with developing rapidly of electronic technology, electronic product also gets more and more, and enriches the enjoyment of the life of people greatly, improves work efficiency simultaneously.A lot of electronics miniaturization development, internal battery makes electronic equipment to move everywhere, the such as electronic equipment such as mobile phone, flat board.
At present; restriction due to battery capacity; electronic equipment needs to be charged in use for some time, but, charging security incident often occurs; also the report caused casualties because of charging it is frequently seen in news; tracing it to its cause, mainly charging control circuit temperature is too high, causes charging circuit to be lost; and then electric current leaks, produce security incident.
Summary of the invention
The purpose that the present invention implements is to provide the charging control circuit of a kind of electronic equipment, it is intended to the charging control circuit solving current electronic equipment exists the problem of potential safety hazard.
In order to solve above-mentioned technical problem, the present invention is achieved in that the charging control circuit of a kind of electronic equipment, including:
Main control module, its input is connected with charge power supply, controls the break-make of charge power supply；And
Temperature collect module, its input is connected with charge power supply, and its outfan is connected with the control end of described main control module, detects when the temperature of charge power supply is more than preset temperature threshold value, output control signal gives described main control module, described control circuit control described charge power supply and turn off.
Further, described main control module includes: the first switching tube, second switch pipe, the 3rd switching tube, the first resistance, the second resistance, the 3rd resistance and optocoupler；The base stage of described first switching tube is connected with charge power supply by the first resistance, and its colelctor electrode is connected to the base stage of described second switch pipe, and its emitter stage is connected to the colelctor electrode of the audion of described optocoupler；The base stage of described second switch pipe is connected with charge power supply by the second resistance, its emitter stage and power supply electricity
Source connects, and its colelctor electrode is connected with electronic equipment as the outfan of described main control module；The base stage of described 3rd switching tube is connected to a level signal source by described 3rd resistance, its
Emitter grounding, its colelctor electrode is connected with the negative electrode of the diode in described optocoupler；The grounded collector of audion in described optocoupler, the anode of its diode connects a power supply.
Further, described main control module also includes: the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the first electric capacity；One end of described 4th resistance is connected to the colelctor electrode of described second switch pipe；The other end and electronic equipment
Connect, and by described first capacity earth；One end of described 5th resistance is connected to the emitter stage of described first switching tube, and the other end is connected to the colelctor electrode of the audion in described optocoupler；One termination one power supply of described 6th resistance, the other end is connected to the anode of the diode in described optocoupler；One end of described 7th resistance is connected to the base stage of described 3rd switching tube, other end ground connection.
Further, described temperature collect module includes: lock circuit and detecting element；One end of described detecting element is connected to the detected unit of described charge power supply, and the other end is connected to the input of described lock circuit；The outfan of described lock circuit is connected to the control end of described main control module.
Further, described detected unit is fin or transformator.
Further, described lock circuit includes: the 4th switching tube, the 5th switching tube and the 8th resistance；Described 4th switching tube base stage be connected to the control of described main control module by described 8th resistance
End, its emitter stage is connected to the control end of described main control module, and its colelctor electrode is connected to the base stage of described 5th switching tube；The base stage of described 5th switching tube is connected with described detecting element, its grounded emitter, and its colelctor electrode is connected to the base stage of described 4th switching tube.
Further, described temperature collect module also includes: the first divider resistance, the second divider resistance, mu balanced circuit, the second electric capacity, the 3rd electric capacity, the 9th resistance and the tenth resistance；The input end grounding of described mu balanced circuit, its outfan is connected with described power supply by described second divider resistance, and it adjusts end and passes through the second capacity earth, is also connected with its outfan；One end of described 9th resistance is connected to the input of described lock circuit, also by the tenth resistance eutral grounding,
The other end passes through the first divider resistance ground connection, is connected with described power supply also by described detecting element, the second divider resistance.
Further, described temperature collect module includes: reset circuit and detecting element；One end of described detecting element is connected to the detected unit of described charge power supply, and the other end is connected to the input of described reset circuit；The outfan of described reset circuit is connected to the control end of described main control module.
Further, described reset circuit includes that metal-oxide-semiconductor, the grid of described metal-oxide-semiconductor are connected with described detecting element, its source ground, its connection that drains
Control end to described main control module.
The purpose of the embodiment of the present invention also resides in the charging device providing a kind of electronic equipment, including according to the charging control circuit described in claim 1 to 9 any one.
In embodiments of the present invention, the charging control circuit of electronic equipment includes main control module and temperature detecting module, and wherein the input of main control module is connected with charge power supply, controls the break-make of described charge power supply；The input of described temperature collect module is connected with described charge power supply, outfan and the control end of described main control module
Connect, when the temperature described charge power supply being detected is more than preset temperature threshold value, output control signal gives described main control module, described control circuit control described charge power supply and turn off, the charging control circuit making electronic equipment is safer, promotes charging safe class.
Accompanying drawing explanation
Fig. 1 is the function structure chart of the charging control circuit of the electronic equipment that the embodiment of the present invention provides；
Fig. 2 is the circuit diagram of the charging control circuit of the electronic equipment that one embodiment of the invention provides；
Fig. 3 is the circuit diagram of the charging control circuit of the electronic equipment that another embodiment of the present invention provides；
Fig. 4 is the circuit diagram of the charging control circuit of the electronic equipment that yet another embodiment of the invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with specific embodiment the present invention implemented and is described in detail:
Fig. 1 shows the function structure chart of the charging control circuit of the electronic equipment that the embodiment of the present invention provides, and for convenience of description, only lists the part relevant to the embodiment of the present invention, and details are as follows:
The charging control circuit 2 of the electronic equipment that the embodiment of the present invention provides includes main control module 21 and temperature collect module 22, and wherein the input of main control module 21 is connected with charge power supply 1, and outfan is connected with electronic equipment 3, controls the break-make of charge power supply 1；The input of testing circuit 22 is connected with charge power supply 1, its outfan is connected with the control end of main control module 21, detect charge power supply 1 detected unit temperature more than preset temperature threshold value time, output control signal to main control module 21, main control module 21 control charge power supply 1 and turn off.
In embodiments of the present invention, the circuit of main control module 21 is as in figure 2 it is shown, include: the first switching tube Q1, second switch pipe Q2, the 3rd switching tube Q5, the second resistance R2, the first resistance R3, the 3rd resistance R13 and optocoupler U1；Wherein the base stage of the first switching tube Q1 is connected with power supply 1 by the first resistance R3, and its colelctor electrode is connected to the base stage of second switch pipe Q2, and its emitter stage is connected to the colelctor electrode of the audion in photoelectrical coupler U1；The base stage of second switch pipe Q2 is connected with charge power supply 1 also by the second resistance R2, and its emitter stage is connected with charge power supply 1, and its colelctor electrode electrically connects with electronic equipment 3；The base stage of the 3rd switching tube Q5 is connected to a level signal source by the 3rd resistance R13, its grounded emitter, and its colelctor electrode is connected with the negative electrode of the diode in optocoupler U1；The grounded collector of audion in optocoupler U1, the anode of its diode connects a 5V power supply.As one embodiment of the present of invention, the first switching tube Q1, the 3rd switching tube Q5 are NPN type triode, and second switch pipe Q2 is PNP type triode.
As one embodiment of the present of invention, main control module 21 also includes: the 4th resistance R1, the 5th resistance R7, the 6th resistance R11, the 7th resistance R12 and the first electric capacity C1, wherein, one end of 4th resistance R1 is connected to the colelctor electrode of second switch pipe Q2, and the other end is connected to electronic equipment 3 and by the first electric capacity C1 ground connection；One end of 5th resistance R7 is connected to the emitter stage of the first switching tube Q1, and the other end is connected to the colelctor electrode of the audion in optocoupler U1；One end of 6th resistance R11 connects a 5V power supply, and the other end is connected to the anode of the diode in optocoupler U1；One end of 7th resistance R12 is connected to the base stage of the 3rd switching tube Q5, other end ground connection.
In embodiments of the present invention, the circuit of temperature collect module 22 is as it is shown on figure 3, include: lock circuit 221 and detecting element 222；Wherein, one end of detecting element 222 is connected to the detected unit of charge power supply 1, and the other end is connected to the input of lock circuit 221；The outfan of lock circuit 221 is connected to the control end of control circuit 21.As one embodiment of the present of invention, detecting element 222 is critesistor.As one embodiment of the present of invention, the detected unit of charge power supply 1 can be fin or transformator.
In embodiments of the present invention, lock circuit 221 includes: the 4th switching tube Q3, the 5th switching tube Q4 and the 8th resistance R4, wherein, the base stage of the 4th switching tube Q3 is connected to the control end of control circuit 21 by the 8th resistance R4, its emitter stage is connected to the control end of main control module 21, its grounded collector；The base stage of the 5th switching tube Q4 is connected with detecting element 222, its grounded emitter, and its colelctor electrode is connected to the base stage of the 4th switching tube Q3.As one embodiment of the present of invention, the 4th switching tube Q3 is PNP type triode, and the 5th switching tube Q4 is NPN type triode.
In embodiments of the present invention, temperature collect module 22 farther includes: the 9th resistance R5, the tenth resistance R6, the first divider resistance R9, the second divider resistance R10, second electric capacity C2, electric capacity C3 and mu balanced circuit U2, wherein, the input end grounding of mu balanced circuit U2, one end of outfan and the second divider resistance R10 connects, and adjusts end and passes through the second electric capacity C2 ground connection, is also connected with its outfan；The other end of the second divider resistance R10 is connected with the detected unit of charge power supply 1, and the detected unit of charge power supply 1 is also by electric capacity C3 ground connection；One end of 9th resistance R5 is connected to the input of described lock circuit 221, and also by the tenth resistance R6 ground connection, the other end passes through the first divider resistance R9 ground connection, is connected with charge power supply 1 also by detecting element 222 and the second divider resistance R10.
The circuit diagram of the charging control circuit of the electronic equipment that Fig. 4 provides for the embodiment of the present invention, the operation principle describing charging control circuit referring now to Fig. 4 is as follows.
Charge power supply 1 powers to the base stage of the first switching tube Q1 by the first resistance R3, now, and the first switching tube Q1 conducting；Charge power supply 1 is powered to the base stage of second switch pipe Q2 by the second resistance R2, and now, second switch pipe Q2 is in cut-off state；When level controling signal provides a low level, the 3rd switching tube Q5 is in cut-off state, and optocoupler U1 ends, and second switch pipe Q2 is also at cut-off state, does not therefore have power supply to supply electronic equipment 3；When level controling signal provides a high level, 3rd switching tube Q5 conducting, optocoupler U1 turns on, first switching tube Q1 is in normally on, the base stage of second switch pipe Q2 is pulled to low level, now second switch pipe Q2 conducting, therefore charge power supply 1 powers to electronic equipment 3, it is ensured that the normal work of electronic equipment 3.
nullDuring charge power supply 1 gives electronic equipment 3 normal power supply，If critesistor R8 detects the temperature of detected unit more than preset temperature threshold value，The resistance of critesistor R8 can diminish，When the resistance of critesistor R8 is reduced to a certain degree，Charge power supply 1 can be by the first divider resistance R9、Second divider resistance R10 dividing potential drop，Voltage stabilizing process is carried out by mu balanced circuit U2，And one high level of base stage of the 5th switching tube Q4 is given by the 9th resistance R5，5th switching tube Q4 conducting，The base voltage of the 4th switching tube Q3 is 0，4th switching tube RQ3 conducting，Now，The conducting of the 4th switching tube RQ3 makes the base voltage of the first switching tube Q1 be low level，Therefore the first switching tube Q1、Second switch pipe Q2 is in cut-off state，Charge power supply 1 stops powering to electronic equipment 3，Thus reached the purpose that charging controls.The lock circuit being made up of the 4th switching tube Q3, the 5th switching tube Q4 is an endless loop circuit, needs to turn back on to recover normal power supply.
In embodiments of the present invention, lock circuit 221 could be arranged to reset circuit, and reset circuit can be metal-oxide-semiconductor.As one embodiment of the present of invention, the grid of metal-oxide-semiconductor is connected with detecting element, its source ground, and its drain electrode is connected to the control end of main control module 21.When the grid of metal-oxide-semiconductor has a high level, metal-oxide-semiconductor turns on, the drain electrode of metal-oxide-semiconductor export control signal and turn off to main control module, control power supply；After the temperature of detected unit is gradually lowered, the grid of metal-oxide-semiconductor is a low level, the drain electrode of metal-oxide-semiconductor export control signal and again turn on to main control module, control charge power supply, thus recover normal power supply.
The charging device of a kind of electronic equipment that the embodiment of the present invention also provides for, including the charging control circuit of above-mentioned electronic equipment.
In embodiments of the present invention, the charging control circuit of electronic equipment includes main control module and temperature detecting module, and wherein the input of main control module is connected with charge power supply, controls the break-make of described charge power supply；The input of described temperature collect module is connected with described charge power supply, outfan and the control end of described main control module
Connect, when the temperature described charge power supply being detected is more than preset temperature threshold value, output control signal gives described main control module, described control circuit control described charge power supply and turn off, the charging control circuit making electronic equipment is safer, promotes charging safe class.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (10)
1. the charging control circuit of an electronic equipment, it is characterised in that described charging control circuit includes:
Main control module, its input is connected with charge power supply, controls the break-make of described charge power supply；And
Temperature collect module, its input is connected with described charge power supply, and its outfan is connected with the control end of described main control module, detects when the temperature of described charge power supply is more than preset temperature threshold value, output control signal gives described main control module, described control circuit control described charge power supply and turn off.
Charging control circuit the most according to claim 1, it is characterised in that described main control module includes: the first switching tube, second switch pipe, the 3rd switching tube, the first resistance, the second resistance, the 3rd resistance and optocoupler；The base stage of described first switching tube is connected with charge power supply by the first resistance, and its colelctor electrode is connected to the base stage of described second switch pipe, and its emitter stage is connected to the colelctor electrode of the audion of described optocoupler；The base stage of described second switch pipe is connected with charge power supply by the second resistance, and its emitter stage is connected with power supply, and its colelctor electrode is connected with electronic equipment as the outfan of described main control module；The base stage of described 3rd switching tube is connected to a level signal source by described 3rd resistance, its grounded emitter, and its colelctor electrode is connected with the negative electrode of the diode in described optocoupler；The grounded collector of audion in described optocoupler, the anode of its diode connects a power supply.
Charging control circuit the most according to claim 1, it is characterised in that described main control module also includes: the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the first electric capacity；One end of described 4th resistance is connected to the colelctor electrode of described second switch pipe；The other end is connected with electronic equipment, and by described first capacity earth；One end of described 5th resistance is connected to the emitter stage of described first switching tube, and the other end is connected to the colelctor electrode of the audion in described optocoupler；One termination one power supply of described 6th resistance, the other end is connected to the anode of the diode in described optocoupler；One end of described 7th resistance is connected to the base stage of described 3rd switching tube, other end ground connection.
Charging control circuit the most according to claim 1, it is characterised in that described temperature collect module includes: lock circuit and detecting element；One end of described detecting element is connected to the detected unit of described charge power supply, and the other end is connected to the input of described lock circuit；The outfan of described lock circuit is connected to the control end of described main control module.
Charging control circuit the most according to claim 4, it is characterised in that described detected unit is fin or transformator.
Charging control circuit the most according to claim 4, it is characterised in that described lock circuit includes: the 4th switching tube, the 5th switching tube and the 8th resistance；Described 4th switching tube base stage be connected to the control end of described main control module by described 8th resistance, its emitter stage is connected to the control end of described main control module, and its colelctor electrode is connected to the base stage of described 5th switching tube；The base stage of described 5th switching tube is connected with described detecting element, its grounded emitter, and its colelctor electrode is connected to the base stage of described 4th switching tube.
Charging control circuit the most according to claim 4, it is characterised in that described temperature collect module also includes: the first divider resistance, the second divider resistance, mu balanced circuit, the second electric capacity, the 3rd electric capacity, the 9th resistance and the tenth resistance；The input end grounding of described mu balanced circuit, its outfan is connected with described power supply by described second divider resistance, and it adjusts end and passes through the second capacity earth, is also connected with its outfan；One end of described 9th resistance is connected to the input of described lock circuit, and also by the tenth resistance eutral grounding, the other end passes through the first divider resistance ground connection, is connected with described power supply also by described detecting element, the second divider resistance.
Charging control circuit the most according to claim 1, it is characterised in that described temperature collect module includes: reset circuit and detecting element；One end of described detecting element is connected to the detected unit of described charge power supply, and the other end is connected to the input of described reset circuit；The outfan of described reset circuit is connected to the control end of described main control module.
Charging control circuit the most according to claim 8, it is characterised in that described reset circuit includes that metal-oxide-semiconductor, the grid of described metal-oxide-semiconductor are connected with described detecting element, its source ground, its drain electrode is connected to the control end of described main control module.
10. the charging device of an electronic equipment, it is characterised in that include according to the charging control circuit described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610469637.4A CN106026259A (en) | 2016-06-26 | 2016-06-26 | Charging control circuit and charging device of electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610469637.4A CN106026259A (en) | 2016-06-26 | 2016-06-26 | Charging control circuit and charging device of electronic equipment |
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| CN106026259A true CN106026259A (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610469637.4A Pending CN106026259A (en) | 2016-06-26 | 2016-06-26 | Charging control circuit and charging device of electronic equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919728A (en) * | 2018-08-23 | 2018-11-30 | 深圳和而泰智能控制股份有限公司 | A kind of control circuit |
| CN110658404A (en) * | 2019-09-30 | 2020-01-07 | 中国联合网络通信集团有限公司 | Terminal testing device and method |
| CN112087164A (en) * | 2020-09-29 | 2020-12-15 | 浙江工业职业技术学院 | Motor braking control circuit |
| CN112399650A (en) * | 2019-08-15 | 2021-02-23 | 北京小米移动软件有限公司 | Heating control circuit and terminal equipment |
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| CN2335296Y (en) * | 1998-06-02 | 1999-08-25 | 施鸿铭 | AC/DC rechargeable type power supply for mobile telephone set |
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| CN112399650A (en) * | 2019-08-15 | 2021-02-23 | 北京小米移动软件有限公司 | Heating control circuit and terminal equipment |
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| CN112087164A (en) * | 2020-09-29 | 2020-12-15 | 浙江工业职业技术学院 | Motor braking control circuit |
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