CN106532835A - Charging device and charger - Google Patents
Charging device and charger Download PDFInfo
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- CN106532835A CN106532835A CN201611100309.3A CN201611100309A CN106532835A CN 106532835 A CN106532835 A CN 106532835A CN 201611100309 A CN201611100309 A CN 201611100309A CN 106532835 A CN106532835 A CN 106532835A
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Classifications
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- H02J7/0088—
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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
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
Abstract
The invention provides a charging device and a charger used for the charger, and belongs to the technical field of electronics. The charging device comprises a judgment module, a detection module, a power-off module, a warning module and a control module; the temperature of the charger is detected through the detection module and a voltage signal is output to the judgment module; the judgment module judges whether the temperature of the charger is higher than a preset temperature or not according to the voltage signal and outputs a judgment signal to the power-off module; the power-off module can judge whether an external power supply of the charger is cut off or not according to the judgment signal; and furthermore, the charger can be automatically powered off through the power-off module when serving as a storage device, a wireless communication device or a display device, so that the charger can be prevented from being burnt out when the temperature is over-high, and the security of the charger is greatly improved.
Description
Technical field
The present invention relates to electronic technology field, in particular to a kind of charging device and charger.
Background technology
As the development of science and technology, charger are of many uses in every field, particularly extensively used in sphere of life
In the common electrical equipment of mobile phone, camera etc..Charger is to adopt power electronics semiconductor device, will be voltage and frequency changeless
Convert alternating current is a kind of galvanic static ac dc converter device.With battery as working power or stand-by power supply uses electric field
Close, charger is with a wide range of applications.
Many commonly-used compact electric apparatus can realize the supply of power supply by way of charging, but while occur in that one
Individual new potential safety hazard, i.e., existing charger form, can make prompting, but now fill in the case where electrical appliance is fully charged
Electrical equipment still in work, if user can not break charge power supply in time, thus easilys lead to charger and crosses cause thermal damage,
Spontaneous combustion, self-destruction are even resulted in, this security incident had occurred repeatedly, and the safety of life and property for giving people brings greatly
Hidden danger.
Therefore, how by the effective security controlled to improve charger, it is the problem for being badly in need of at present considering.
The content of the invention
It is an object of the invention to provide a kind of charging device and charger, which can effectively improve the safety of charger
Property.
What embodiments of the invention were realized in：
In a first aspect, the embodiment of the present invention provides a kind of charging device, charger is applied to, the charging device includes sentencing
Disconnected module, detection module, power-off modular, alarm module, control module, the control module respectively with the detection module, institute
Judge module, the power-off modular, alarm module coupling are stated, the judge module is coupled with the detection module, described
Judge module is coupled with the power-off modular, the alarm module respectively, and the power-off modular is defeated with the outside of the charger
Enter power supply coupling；The detection module is used for the temperature signal for detecting the charger, and exports a voltage signal；The judgement
For the temperature of the charger is judged according to the voltage signal whether higher than preset temperature value, output one judges letter to module
Number；The power-off modular is for according to the external power source for judging whether signal cuts off the charger.
Further, the power-off modular include the first input circuit, the first NAND gate circuit, the second input circuit,
Two NAND gate circuits, first input circuit are coupled with first NAND gate circuit, first NAND gate circuit and institute
The coupling of the second NAND gate circuit is stated, second input circuit is coupled with second NAND gate circuit.
Further, the first input circuit includes first port, first resistor, second resistance, the first electric capacity, second electric
Appearance, the 3rd electric capacity, the first comparison amplifier and three terminal regulator；One end coupling of the first port and the first resistor
Close, the other end of the first resistor coupled with the external input power of the charger, one end of the first resistor and institute
State one end coupling of the first electric capacity, the other end ground connection of first electric capacity, the normal phase input end of first comparison amplifier
Couple with the first port, the inverting input of first comparison amplifier is coupled with one end of the second resistance, institute
The other end for stating second resistance is coupled with the external input power of the charger, the anti-phase input of first comparison amplifier
End cathode terminal respectively with the three terminal regulator, one end of second electric capacity couple, the anode tap of the three terminal regulator,
The other end of second electric capacity is grounded, one end of the power positive end of first comparison amplifier and the 3rd electric capacity
Coupling, the other end ground connection of the 3rd electric capacity, the output end of first comparison amplifier and first NAND gate circuit
Coupling.
Further, first NAND gate circuit include 3rd resistor, the 4th resistance, the 5th resistance, the 4th electric capacity with
And first NAND gate；One end of the 3rd resistor, one end of the 4th resistance, the 5th resistance one end with it is described
The output end coupling of the first comparison amplifier, the external input power coupling of the other end of the 3rd resistor and the charger
Close, the other end of the 4th resistance is provided with the first connectivity port, the other end and first NAND gate of the 5th resistance
Input coupling, the feeder ear of first NAND gate one end respectively with the 4th electric capacity, the outside of the charger
Input power is coupled, and the other end ground connection of the 4th electric capacity, the control end of first NAND gate are provided with the second connectivity port,
The earth terminal ground connection of first NAND gate, the output end of first NAND gate are coupled with second NAND gate circuit.
Further, second input circuit include second port, the 6th resistance, the 7th resistance, the 8th resistance, the 9th
Resistance, diode, the 5th electric capacity and triode；The second port is coupled with one end of the 5th electric capacity, and the described 5th
The other end of electric capacity is coupled with one end of the 6th resistance, the other end of the 6th resistance and the base stage coupling of the triode
Close, the base stage of the triode is also coupled with described one end of 7th resistance, the negative electrode of the diode respectively, and the described 7th is electric
The other end of resistance is coupled and is grounded with the emitter stage of the triode with the anode of the diode, the current collection of the triode
Pole one end respectively with the 8th resistance, one end of the 9th resistance couple, the other end of the 8th resistance with it is described
The external power source coupling of charger, the other end of the 9th resistance are coupled with second NAND gate circuit.
Further, second NAND gate circuit includes the 6th electric capacity and the second NAND gate, the 9th resistance it is another
One end is coupled with the input of second NAND gate, the control of the output end of first NAND gate and second NAND gate
End coupling, the feeder ear of second NAND gate one end respectively with the 6th electric capacity, the charger external power source it is defeated
Enter end coupling, the other end ground connection of the 6th electric capacity, the earth terminal of second NAND gate are grounded, second NAND gate
Output end is provided with the 3rd connectivity port.
Further, detection module includes thermocouple, compensation circuit, amplifying circuit, the thermocouple and the compensation electricity
Road couples, and the compensation circuit is coupled with the amplifying circuit, and the amplifying circuit is coupled with the judge module.
Further, the compensation circuit include the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd resistance,
14 resistance and battery, one end of the tenth resistance are coupled with one end of the 11st resistance, the tenth resistance
One end is coupled with the cold end of the thermocouple with the tie point of one end of the 11st resistance, the other end of the tenth resistance
Positive terminal respectively with the battery, one end of the 12nd resistance couple, the negative pole end of the battery and the described 14th
One end coupling of resistance, the other end of the 14th resistance other end respectively with the 11st resistance, the 13rd resistance
One end coupling, the other end of the 12nd resistance coupled with the other end of the 13rd resistance, the 12nd resistance
The other end couple with the amplifying circuit with the tie point of the other end of the 13rd resistance.
Further, the amplifying circuit includes the first operational amplifier, the second operational amplifier, the 3rd operation amplifier
Device, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance, the 19th resistance, the 20th resistance, the 21st
Resistance, the in-phase input end of first operational amplifier are coupled with the measurement end of the thermocouple, first operation amplifier
The output end of device one end respectively with the 15th resistance, one end of the 16th resistance couple, the 15th resistance
The other end couple with one end of the 17th resistance, the other end of the 15th resistance and the one of the 17th resistance
The tie point at end is coupled with the inverting input of first operational amplifier, the other end of the 17th resistance and described
One end coupling of 18 resistance, the other end of the 17th resistance and the tie point of one end of the 18th resistance with it is described
The inverting input coupling of the second operational amplifier, the other end of the 18th resistance and one end coupling of the 19th resistance
Conjunction, the other end of the 18th resistance and the tie point of one end of the 19th resistance and second operational amplifier
Normal phase input end is coupled, and the other end of the 19th resistance is coupled with one end of the 20th resistance, and the described 20th is electric
The other end ground connection of resistance, the other end of the 19th resistance and the tie point and the described 3rd of one end of the 20th resistance
The normal phase input end coupling of operational amplifier, the other end of the 16th resistance and one end coupling of the 21st resistance
Close, the tie point of the other end of the 16th resistance and one end of the 21st resistance is with the 3rd operational amplifier just
Phase input is coupled, and the other end of the 21st resistance is coupled with the 3rd operational amplifier output terminal.
Second aspect, the embodiment of the present invention provide a kind of charger, and the charger includes charging inlet, outer for connecting
The plug and charging device of portion's power supply, the charging inlet, the plug are coupled with the charging device.
The beneficial effect of the embodiment of the present invention is：
The embodiment of the present invention provides a kind of charging device and charger, when the external power source of charger passes through charger to quilt
When charging equipment charges, the temperature of the charger is detected by the detection module, and will be the temperature signal electric as one
To judge module, whether judge module judges the temperature of charger higher than default temperature to pressure signal output according to this voltage signal
Degree, and a judgement signal is exported to power-off modular, so as to according to this, power-off modular can judge whether signal cuts off the charging
The external power source of device；For example, when it is higher than preset temperature that this judges signal for the temperature of charger, power-off modular is used to cut off institute
State the external power source of charger；When this judges signal is not higher than preset temperature for the temperature of charger, power-off modular is not used in
Cut off the external power source of the charger；Allow charger when temperature is too high, automatically powered off by power-off modular, so as to
Can ensure that charger prevents from being burned when temperature is too high, substantially increase the security of charger.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by to be used attached needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of structured flowchart of charging device provided in an embodiment of the present invention；
Fig. 2 is a kind of circuit diagram of power-off modular provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit diagram of detection module provided in an embodiment of the present invention；
Fig. 4 is a kind of structured flowchart of charger provided in an embodiment of the present invention.
Icon：200- chargers；210- charging inlets；220- plugs；100- charging devices；110- power-off modulars；112-
First input circuit；The first NAND gate circuits of 114-；The second input circuits of 116-；The second NAND gate circuits of 118-；120- is detected
Module；122- compensation circuits；124- amplifying circuits；130- judge modules；140- alarm modules；150- control modules.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Present invention enforcement generally described and illustrated in accompanying drawing herein
The component of example can be arranged and be designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment in the present invention, this area is common
The every other embodiment obtained under the premise of creative work is not made by technical staff, belongs to the model of present invention protection
Enclose.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then in subsequent accompanying drawing which further need not be defined and is explained.
Additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that indicating or implying
Relative importance.
In describing the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " coupling ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can be
It is mechanically connected, or electrically connects；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, are partly become from specification
It is clear that or being understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
In specification, claims and accompanying drawing, specifically noted structure is realizing and obtain.
Fig. 1 is refer to, Fig. 1 is a kind of structured flowchart of charging device provided in an embodiment of the present invention 100, the charging dress
Putting 100 includes judge module 130, detection module 120, power-off modular 110, alarm module 140, control module 150, the control
Module 150 is coupled with the detection module 120, judge module 130, power-off modular 110, the alarm module 140 respectively, described
Judge module 130 is coupled with the detection module 120, the judge module 130 respectively with the power-off modular 110, the police
Show that module 140 is coupled, the power-off modular 110 is coupled with the external input power of the charger.
Fig. 2 is refer to, Fig. 2 is a kind of circuit diagram of power-off modular provided in an embodiment of the present invention 110.The power-off modular
110 include the first input circuit 112, the first NAND gate circuit 114, the second input circuit 116, the second NAND gate circuit 118, institute
State the first input circuit 112 to couple with first NAND gate circuit 114, first NAND gate circuit 114 and described second
NAND gate circuit 118 is coupled, and second input circuit 116 is coupled with second NAND gate circuit 118.
First input circuit 112 is used to obtain the judgement signal of the transmission of judge module 130, and after will determine that signal amplifies
Export to the first NAND gate circuit 114.First input circuit 112 include first port P1, first resistor R1, second resistance R2,
First electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the first comparison amplifier U1 and three terminal regulator U2.
First port P1 can receive judgement signal.First port P1 is coupled with one end of first resistor R1, first resistor
The other end of R1 is coupled with the external input power of the charger.One end of first electric capacity C1 and one end coupling of first resistor R1
Close, and the other end of the first electric capacity C1 is grounded to form filtering and voltage stabilizing.The positive input and first of the first comparison amplifier U1
Port P1 couples to obtain electric signal to be detected.The reverse input end of the first comparison amplifier U1 and one end coupling of second resistance R2
Close, the other end of second resistance R2 is coupled with the external input power of the charger.First comparison amplifier U1's is reverse defeated
Enter end to couple with the cathode terminal and reference voltage end of three terminal regulator U2 respectively, and the anode tap of three terminal regulator U2 ground connection.Make
For a kind of embodiment, by the partial pressure of second resistance R2, and by the voltage stabilizing of three terminal regulator U2 so that first compares and put
The reverse input end of big device U1 can obtain the operating voltage of adaptation.The reverse input end of the first comparison amplifier U1 is also with second
One end coupling of electric capacity C2, and the other end of the second electric capacity C2 is grounded to form filtering and voltage stabilizing.First comparison amplifier U1 is positive
Power supply end is coupled with external power source, and the positive power supply end of the first comparison amplifier U1 also with the 3rd electric capacity C3
End coupling, the other end of the 3rd electric capacity C3 are grounded to form filtering and voltage stabilizing.The reverse power supply power end of the first comparison amplifier U1
Ground connection, and the output end of the first comparison amplifier U1 is coupled with the first NAND gate U3 circuit.By the first comparison amplifier U1's
Coupled modes, just can by first port P1 be input into electric signal to be detected compare and enlarge, and by amplification after it is to be detected
Electric signal output.
First NAND gate circuit 114 include 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 4th electric capacity C4 and
First NAND gate U3.
One end of 3rd resistor R3, one end of the 4th resistance R4, the 5th resistance R5 one end and institute
State the output end coupling of the first comparison amplifier U1, the outside input of the other end of 3rd resistor R3 and the charger
Power supply is coupled, and the other end of the 4th resistance R4 is provided with the first connectivity port a, the control module 150 can obtain this first
The judgement signal of connectivity port a；First port P1 is coupled with control module 150；The other end of the 5th resistance R5 and institute
State the input coupling of the first NAND gate U3, the feeder ear of first NAND gate U3 respectively with the 4th electric capacity C4 one
End, the external input power coupling of the charger, so as to the first NAND gate U3 can obtain the electric signal to be detected of input.Institute
The other end for stating the 4th electric capacity C4 is grounded to form filtering and voltage stabilizing, and the control end of first NAND gate U3 is provided with the second connection end
Mouth b, second connectivity port b are also coupled with the control module 150, and the second connectivity port b is used to obtain the control module
The control signal of 150 inputs, used as the input of the control end of the first NAND gate U3, the ground connection of first NAND gate U3 terminates
Ground, the output end of first NAND gate U3 is coupled with second NAND gate circuit 118, and then 118 energy of the second not circuit
The pulse signal of the output of the first NAND gate circuit 114 is obtained enough.
Second input circuit 116 is used for the electric signal to be detected of the external power source input charger for obtaining charger, including
Second port P2, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, diode D1, the 5th electric capacity C5 with
And triode Q1.
Second port P2 can obtain the electric signal to be detected that the external power source of charger is input into charger.Second end
Mouthful P2 is coupled with one end of the 5th electric capacity C5, the other end of the 5th electric capacity C5 and one end coupling of the 6th resistance R6
Close, the other end of the 6th resistance R6 coupled with the base stage of the triode Q1, the base stage of the triode also respectively with institute
State one end, the negative electrode coupling of the diode D1 of the 7th resistance R7, the other end and the diode of the 7th resistance R7
The anode of D1 is coupled and is grounded with the emitter stage of the triode Q1, so that diode D1 forms clamped effect to circuit.Institute
State the colelctor electrode of triode Q1 one end respectively with the 8th resistance R8, one end of the 9th resistance R9 to couple, described
The other end of eight resistance R8 is coupled with the external power source of the charger, so that the first triode Q1's can obtain work electricity
Source.The other end of the 9th resistance R9 is coupled with second NAND gate circuit 118, so as to just can by obtain it is to be detected
Electric signal output is to the second NAND gate circuit 118.
Second NAND gate circuit 118 includes the 6th electric capacity C6 and the second NAND gate U4, the other end of the 9th resistance R9
Couple with the input of second NAND gate U4, the control of the output end of first NAND gate U3 and second NAND gate U4
End processed coupling, the feeder ear of second NAND gate U4 one end respectively with the 6th electric capacity C6, the outside of the charger
Power input is coupled, and the other end of the 6th electric capacity C6 is grounded to form filtering and voltage stabilizing, and second NAND gate U4 connects
Ground terminal is grounded, and the output end of second NAND gate U4 is provided with the 3rd connectivity port c, and the 3rd connectivity port c is filled for connection
The load circuit powered is needed in electrical equipment.As a kind of embodiment, under original state, the control end of the second NAND gate U4 is low
Level, so as to the second NAND gate U4 output high level under original state.
When the judging signal for high level of input of the first NAND gate U3, then the control of control module 150 first with it is non-
The control end input low level of door U3, then the output end of the first NAND gate U3 is just high level, used as the second NAND gate U4
The input of control end, when the electric signal to be detected that the input of the second NAND gate U4 is input into is high level, i.e. the temperature of charger
Degree is low level higher than preset temperature, the then output end of the second NAND gate U4, so as to cut off the external power source of charger；When first
When judging signal for low level of the input of NAND gate U3, then the control end of first NAND gate U3 of the control of control module 150 is defeated
Enter low level or high level, then the output end of the first NAND gate U3 is just high level, used as the control end of the second NAND gate U4
Input, when the second NAND gate U4 input be input into when judging signal for low level, i.e., the temperature of charger less than or wait
In preset temperature, then the output end of the second NAND gate U4 is high level, so as to not cut off the external power source of charger.
Refer to Fig. 3, Fig. 3 is a kind of circuit diagram of detection module provided in an embodiment of the present invention 120, the detection module
120 are used to detect the temperature signal of the charger, and export a voltage signal to judge module 130, and the detection module 120 is wrapped
Thermocouple V1, compensation circuit 122, amplifying circuit 124 are included, the thermocouple V1 is coupled with the compensation circuit 122, the compensation
Circuit 122 is coupled with the amplifying circuit 124, and the amplifying circuit 124 is coupled with the judge module 130.
Thermocouple V1 is the temperature element commonly used in a kind of temperature measuring instrument, and it can be used directly to measurement temperature, and
Temperature signal is converted into electromotive force signal, by tested charger in electric meter (secondary meter) conversion cost embodiment
Temperature.The general principle of thermocouple V1 thermometrics is the material conductor composition closed-loop path of two kinds of different components, when two ends have temperature
During degree gradient, electric current is just had in loop and is passed through, electromotive force thermo-electromotive force is now there is between two ends, here it is so-called
Seebeck effect (Seebeck effect).The homogeneous conductor of two kinds of different components is thermode, and the higher one end of temperature is
Working end, the relatively low one end of temperature are free end, and free end is generally under certain stationary temperature.According to thermo-electromotive force and temperature
The functional relation of degree, makes thermocouple indexing table；Phasing meter be free end temperature at 0 DEG C under conditions of obtain, it is different
Thermocouple has different phasing meters.
When the third metal material is accessed in Thermocouple Circuit, as long as the temperature of two contacts of material is identical, thermoelectricity
Thermoelectrical potential produced by idol will keep constant, i.e., not accessed by the third metal is affected in loop.Therefore, in thermocouple temperature measurement
When, measuring instrumentss are can access, after measuring thermo-electromotive force, you can know the temperature of tested charger in the present embodiment.
Constitute the detection module 120 of the charging device 100 in the present embodiment using thermocouple V1 temperature measurement circuits, be because
Have for thermocouple V1：Temperature-measuring range width, Performance comparision are stable；Which measures high precision, can with tested charger directly contact,
Do not affected by intermediate medium；Thermal response time is fast, flexible to temperature change repercussion；Measure scope big, can from -40～+
1600 DEG C can continuous temperature measurement；Thermocouple V1 robust performances, mechanical strength are good；The advantages of long service life, device box lunch.Certainly
The device that other measurement temperatures such as temperature sensor may also be employed is charged the temperature survey of device.
Require during thermocouple V1 measurement temperatures that (measurement end is hot junction to its cold end, the end being connected with measuring circuit by lead
Referred to as cold end) temperature keep constant, its thermoelectrical potential size is just and measurement temperature is in certain proportionate relationship.If during measurement, cold
(environment) temperature change at end, will have a strong impact on the accuracy of measurement.Due to the impact that cold junction temperature change is caused, so Jing is normal
Certain measure is taken to compensate in cold end, a kind of conventional compensation way is bridge-type auto compensatng circuit 122, this compensation method is
In the arm that composition bridge circuit is put near thermocouple V1 cold ends place, this arm is the metal group for having temperature-coefficient of electrical resistance larger
Into typically using ambrose alloy, its excess-three arm is all made up of the less manganin of temperature-coefficient of electrical resistance.
The compensation circuit 122 includes the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12, the 13rd resistance
R13, the 14th resistance R14 and battery BT.One end of the tenth resistance R10 and one end coupling of the 11st resistance R11
Close, the cold end of the tie point of one end of the tenth resistance R10 with one end of the 11st resistance R11 and the thermocouple V1
Coupling, the other end of the tenth resistance R10 positive terminal respectively with the battery BT, one end of the 12nd resistance R12
Coupling, the negative pole end of the battery BT are coupled with one end of the 14th resistance R14, and the 14th resistance R14's is another
End is coupled with the other end of the 11st resistance R11, one end of the 13rd resistance R13 respectively, the 12nd resistance R12's
The other end is coupled with the other end of the 13rd resistance R13, and the other end of the 12nd resistance R12 is electric with the described 13rd
The tie point of the other end of resistance R13 is coupled with the amplifying circuit 124.
Wherein, the 11st resistance R11, the 12nd resistance R12, the 13rd resistance R13 are the resistance not varied with temperature, the
Resistance of the ten resistance R10 for temperature change, adjustable resistances of the 14th resistance R14 for regulating cell BT.
Thermocouple V1 outputs be millivolt level voltage, it is desirable to for volt-ampere level, so designed using difference amplifier putting
Big circuit 124, it has very low output impedance, precision and stable gain.
The amplifying circuit 124 includes the first operational amplifier U5, the second operational amplifier U6, the 3rd operational amplifier
U7, the 15th resistance R15, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19, second
Ten resistance R20, the 21st resistance R21, the survey of the in-phase input end of the first operational amplifier U5 and the thermocouple V1
The coupling of amount end, the output end of the first operational amplifier U5 one end respectively with the 15th resistance R15, the described 16th
One end coupling of resistance R16, the other end of the 15th resistance R15 is coupled with one end of the 17th resistance R17, described
The tie point and the first operational amplifier U5 of the other end of the 15th resistance R15 and one end of the 17th resistance R17
Inverting input coupling, the other end of the 17th resistance R17 is coupled with one end of the 18th resistance R18, described
The tie point and the second operational amplifier U6 of the other end of the 17th resistance R17 and one end of the 18th resistance R18
Inverting input coupling, the other end of the 18th resistance R18 is coupled with one end of the 19th resistance R19, described
The tie point and the second operational amplifier U6 of the other end of the 18th resistance R18 and one end of the 19th resistance R19
Normal phase input end coupling, the other end of the 19th resistance R19 is coupled with one end of the 20th resistance R20, described
The other end ground connection of the 20th resistance R20, the other end of the 19th resistance R19 and one end of the 20th resistance R20
Tie point couple with the normal phase input end of the 3rd operational amplifier U7, the other end of the 16th resistance R16 and institute
State one end coupling of the 21st resistance R21, one end of the other end of the 16th resistance R16 and the 21st resistance R21
Tie point couple with the normal phase input end of the 3rd operational amplifier U7, the other end of the 21st resistance R21 with
The 3rd operational amplifier U7 output ends coupling, the output end of the 3rd operational amplifier U7 are coupled with the judge module 130,
The temperature signal that the detection module 120 is detected is converted to voltage signal to export to judge module 130.
Judge module 130 judges the temperature of the charger for the voltage signal that exports according to the detection module 120
Whether it is higher than preset temperature value, exports one and judge signal.
Used as a kind of embodiment, the judge module 130 can include main control chip and a voltage comparator circuit, described
Main control chip and voltage comparator circuit coupling, preset temperature value can be stored in main control chip.
The voltage comparator circuit can be the window comparator being made up of LM339 voltage comparator chips, LM339 integrated packages
It is internal the characteristics of four independent voltage comparators, the voltage comparator are housed to be：1) offset voltage is little, and representative value is 2mV；2)
Supply voltage wide ranges, single supply are 2-36V, and dual-supply voltage is ± 1V- ± 18V；3) internal resistance to comparing signal source is limited
It is wider；4) common mode range is very big, is 0～(Ucc-1.5V) Vo；5) differential input voltage range is larger, and big arriving can be equal to power supply
Voltage；6) export terminal potential flexibly and easily to select.
The main control chip is used to drive the voltage comparator circuit, and used as a kind of embodiment, the main control chip can be
A kind of IC chip, with signal handling capacity.Can be digital signal processing chip (DSP), special IC
(ASIC), ready-made programmable gate array (FPGA) or other PLDs, discrete gate or transistor logic,
Discrete hardware components.
Alarm module 140 judges whether to send police for according to the judgement signal of detection judge module 130 output
Show information, when charger temperature is too high, prompting can be sent to user, so as to user can cut off electricity in time
Source, protects charger or is electrically charged the safety of equipment.Used as a kind of embodiment, the alarm module 140 can be a buzzer,
Buzzer is a kind of electro-acoustic element of miniaturization, can be divided into two big class of piezoelectric type and electromagnetic type by operation principle.Piezoelectric type honeybee
Ring device is made using Athens potsherd, when to piezoelectric ceramic piece in addition audio signal, in the presence of inverse piezoelectric effect, ceramics
Frequency with audio signal is sent out upper mechanical oscillation by piece, so as to send sound.The inside of electromagnetic buzzer by magnet, coil and
Vibrating diaphragm etc. is constituted, and when tone currents flows through coil, coil produces magnetic field, and vibrating diaphragm is then with audio signal identical week
Phase, by adhesive and release, so as to produce mechanical oscillation, and sends the sound in the presence of resonator.In the present embodiment, can root
According to needing to select the design of suitable buzzer, the buzzer be based on FPGA (Field-Programmable Gate
Array), i.e. field programmable gate array or CPLD (Complex Programmable Logic Device), i.e., complexity can be compiled
Journey logical device is designed.
Control module 150 can be used in being controlled whole circuit, and used as a kind of embodiment, control module 150 can
Think 51 series monolithics, single-chip microcomputer is a kind of IC chip, be with number using very large scale integration technology
According to the central processor CPU of disposal ability, random access memory ram, read only memory ROM, various I/O mouths and interruption system, determine
When the function such as device/counter (may also include display driver circuit, pulse-width modulation circuit, analog multiplexer, A/D conversions
The circuits such as device) it is integrated into the little and perfect microcomputer system constitute on one piece of silicon chip.Especially 51 serial monolithic
Machine is extensively applied in electronic technology field, and which has, and small volume, reliability are high, the performance that control ability is strong, excellent and valency
The advantages of lattice ratio.
Refer to Fig. 4, Fig. 4 is a kind of structured flowchart of charger provided in an embodiment of the present invention 200, the charger
200 include charging inlet 210, the plug 220 for connecting external power source and above-mentioned charging device 100, the charging
The mouth 210, plug 220 is coupled with the charging device 100.
The charging inlet 210 is electrically charged equipment for connection, and used as a kind of embodiment, the charging inlet 210 can
Think USB interface, the equipment that is electrically charged can be any electronic product being electrically charged, for example, PC (personal
Computer, PC), panel computer, smart mobile phone, wearable device etc. can be electrically charged equipment.
The plug 220 is used for the external power source for connecting the charger 200, and plug 220 can connect socket so as to even
Connect external power source.
As a kind of embodiment, memory can be set in the charger 200, can be used to carry out data storage, this is deposited
Reservoir can store various software programs and module, and memory can include but is not limited to random access memory (Random
Access Memory, RAM), read-only storage (Read Only Memory, ROM), programmable read only memory
(Programmable Read-Only Memory, PROM), erasable read-only memory (Erasable Programmable
Read-Only Memory, EPROM), electricallyerasable ROM (EEROM) (Electric Erasable Programmable
Read-Only Memory, EEPROM) etc.；The charger 200 is also provided with voice device, and memory can be used to store sound
Pleasure, song etc., will can be put outside music, song by voice device so that the charger 200 can be filled to equipment is electrically charged
Electricity, puts the music on.
As a kind of embodiment, display device can also be set on the charger 200, for watching video or the display
Device has other display functions.
Used as a kind of embodiment, the charger 200 can also arrange wireless module, and the charger 200 can pass through nothing
Wire module is communicated with the electronic equipment with communication function, and the wireless module can be bluetooth, wifi etc..
The operation principle of charging device 100 and charger 200 is：When the external power source of charger 200 passes through charger 200
During to being electrically charged equipment charge, the charging device 100 inside its charger 200 controls detection module 120 by control module 150
The temperature of detection charger 200, and export the temperature signal as a voltage signal to judge module 130, judge module 130
The temperature inside charger 200 is judged according to this voltage signal whether higher than preset temperature, and exports a judgement signal extremely
Power-off modular 110 and alarm module 140, judge signal according to which in power-off modular 110 to judge whether to cut off charger 200
External power source, while alarm module 140 judges whether to send warning also according to the judgement signal；When this judges signal to charge
When the temperature of device 200 is higher than preset temperature, power-off modular 110 is used for the external power source for cutting off the charger 200, alarm module
140 send information warning, when this judges signal is equal to or less than preset temperature for the temperature of charger 200, power-off modular 110
For not cutting off the external power source of the charger 200, alarm module 140 does not send information warning, and such charger 200 can be with
When temperature is too high, information warning is automatically powered off and is sent by power-off modular 110 and is known for being electrically charged equipment user, used
Person can be thereby may be ensured that in charger 200 or is electrically charged equipment and is burned when temperature is too high, significantly with hand off power supply
Improve charger 200 or be electrically charged the security of equipment.
In sum, the present invention provides a kind of charging device 100 and charger 200, when the external power source of charger 200 leads to
Electrical equipment 200 is overcharged to when being electrically charged equipment charge, the temperature of the charger 200 is detected by the detection module 120, and
Export the temperature signal as a voltage signal to judge module 130, judge module 130 is judged according to this voltage signal
Whether the temperature inside charger 200 is higher than preset temperature, and export a judgement signal to power-off modular 110, so as to power-off mould
According to this, block 110 can judge whether signal cuts off the external power source of the charger 200；For example, when this judges signal to fill
When the temperature of electrical equipment 200 is higher than preset temperature, power-off modular 110 is used for the external power source for cutting off the charger 200；When this is sentenced
When break signal is not higher than preset temperature for the temperature of charger 200, power-off modular 110 is not used in and cuts off the charger 200
External power source；Allow charger 200 when temperature is too high, automatically powered off by power-off modular 110, thereby may be ensured that and fill
Electrical equipment 200 prevents from being burned when temperature is too high, substantially increases the security of charger 200.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of charging device, is applied to charger, it is characterised in that the charging device include judge module, detection module,
Power-off modular, alarm module, control module, the control module respectively with the detection module, judge module, described disconnected
Electric module, alarm module coupling, the judge module coupled with the detection module, the judge module respectively with it is described
Power-off modular, alarm module coupling, the power-off modular are coupled with the external input power of the charger；
The detection module is used for the temperature signal for detecting the charger, and exports a voltage signal；
The judge module is for the temperature of the charger is judged according to the voltage signal whether higher than preset temperature value, defeated
Go out a judgement signal；
The power-off modular is for according to the external power source for judging whether signal cuts off the charger.
2. charging device according to claim 1, it is characterised in that the power-off modular include the first input circuit,
One NAND gate circuit, the second input circuit, the second NAND gate circuit, first input circuit and first NAND gate circuit
Coupling, first NAND gate circuit couple with second NAND gate circuit, second input circuit with described second and
Not circuit is coupled.
3. charging device according to claim 2, it is characterised in that first input circuit include first port,
One resistance, second resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first comparison amplifier and three terminal regulator；It is described
First port is coupled with one end of the first resistor, and the other end of the first resistor is electric with the outside input of the charger
Source couples, and one end of the first resistor is coupled with one end of first electric capacity, the other end ground connection of first electric capacity, institute
The normal phase input end for stating the first comparison amplifier is coupled with the first port, the inverting input of first comparison amplifier
Couple with one end of the second resistance, the other end of the second resistance is coupled with the external input power of the charger,
The inverting input of first comparison amplifier cathode terminal respectively with the three terminal regulator, one end of second electric capacity
Coupling, the anode tap of the three terminal regulator, the other end of second electric capacity are grounded, the electricity of first comparison amplifier
Source positive terminal is coupled with one end of the 3rd electric capacity, the other end ground connection of the 3rd electric capacity, first comparison amplifier
Output end couple with first NAND gate circuit.
4. charging device according to claim 3, it is characterised in that first NAND gate circuit include 3rd resistor,
4th resistance, the 5th resistance, the 4th electric capacity and the first NAND gate；One end of the 3rd resistor, the one of the 4th resistance
End, one end of the 5th resistance couple with the output end of first comparison amplifier, the 3rd resistor it is another
End is coupled with the external input power of the charger, and the other end of the 4th resistance is provided with the first connectivity port, and described the
The other end of five resistance is coupled with the input of first NAND gate, and the feeder ear of first NAND gate is respectively with described
One end of four electric capacity, the charger external input power coupling, the 4th electric capacity the other end ground connection, described first with
The control end of not gate is provided with the second connectivity port, the earth terminal ground connection of first NAND gate, the output of first NAND gate
End is coupled with second NAND gate circuit.
5. charging device according to claim 4, it is characterised in that second input circuit include second port,
Six resistance, the 7th resistance, the 8th resistance, the 9th resistance, diode, the 5th electric capacity and triode；The second port and institute
One end coupling of the 5th electric capacity is stated, the other end of the 5th electric capacity is coupled with one end of the 6th resistance, and the described 6th is electric
The other end of resistance is coupled with the base stage of the triode, the base stage of triode one end also respectively with the 7th resistance,
The negative electrode coupling of the diode, the other end of the 7th resistance and the anode of the diode are sent out with the triode
Emitter-base bandgap grading is coupled and is grounded, the colelctor electrode of triode one end respectively with the 8th resistance, one end of the 9th resistance
Coupling, the other end of the 8th resistance coupled with the external power source of the charger, the other end of the 9th resistance and institute
State the coupling of the second NAND gate circuit.
6. charging device according to claim 5, it is characterised in that second NAND gate circuit include the 6th electric capacity with
Second NAND gate, the other end of the 9th resistance are coupled with the input of second NAND gate, first NAND gate
Output end is coupled with the control end of second NAND gate, the feeder ear of second NAND gate respectively with the 6th electric capacity
One end, the external power input coupling of the charger, the other end ground connection of the 6th electric capacity, second NAND gate
Earth terminal is grounded, and the output end of second NAND gate is provided with the 3rd connectivity port.
7. charging device according to claim 1, it is characterised in that the detection module include thermocouple, compensation circuit,
Amplifying circuit, the thermocouple are coupled with the compensation circuit, and the compensation circuit is coupled with the amplifying circuit, the amplification
Circuit is coupled with the judge module.
8. charging device according to claim 7, it is characterised in that the compensation circuit include the tenth resistance, the 11st
Resistance, the 12nd resistance, the 13rd resistance, the 14th resistance and battery, one end and the described 11st of the tenth resistance
One end coupling of resistance, one end of the tenth resistance and the tie point and the thermocouple of one end of the 11st resistance
Cold end is coupled, and the other end of the tenth resistance positive terminal respectively with the battery, one end of the 12nd resistance couple,
The negative pole end of the battery is coupled with one end of the 14th resistance, and the other end of the 14th resistance is respectively with described
One end coupling of the other end of 11 resistance, the 13rd resistance, the other end and the 13rd resistance of the 12nd resistance
Other end coupling, the other end of the 12nd resistance and tie point and the amplification of the other end of the 13rd resistance
Circuit is coupled.
9. charging device according to claim 8, it is characterised in that the amplifying circuit include the first operational amplifier,
Second operational amplifier, the 3rd operational amplifier, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance,
19 resistance, the 20th resistance, the 21st resistance, in-phase input end and the thermocouple of first operational amplifier
Measurement end is coupled, the output end of first operational amplifier one end respectively with the 15th resistance, the described 16th electric
One end coupling of resistance, the other end of the 15th resistance are coupled with one end of the 17th resistance, the 15th resistance
The other end couple with the inverting input of first operational amplifier with the tie point of one end of the 17th resistance, institute
The other end for stating the 17th resistance is coupled with one end of the 18th resistance, the other end of the 17th resistance and described
The tie point of one end of 18 resistance is coupled with the inverting input of second operational amplifier, the 18th resistance it is another
One end is coupled with one end of the 19th resistance, the other end and one end of the 19th resistance of the 18th resistance
Tie point is coupled with the normal phase input end of second operational amplifier, the other end and the described 20th of the 19th resistance
One end coupling of resistance, the other end ground connection of the 20th resistance, the other end and the described 20th of the 19th resistance
The tie point of one end of resistance is coupled with the normal phase input end of the 3rd operational amplifier, the other end of the 16th resistance
Couple with one end of the 21st resistance, the connection of the other end of the 16th resistance and one end of the 21st resistance
Point is coupled with the normal phase input end of the 3rd operational amplifier, the other end and the 3rd computing of the 21st resistance
Amplifier out is coupled.
10. a kind of charger, it is characterised in that the charger include charging inlet, for connect the plug of external power source with
And the arbitrary described charging device of claim 1-9, the charging inlet, the plug are coupled with the charging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100309.3A CN106532835B (en) | 2016-12-06 | 2016-12-06 | Charging unit and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100309.3A CN106532835B (en) | 2016-12-06 | 2016-12-06 | Charging unit and charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106532835A true CN106532835A (en) | 2017-03-22 |
| CN106532835B CN106532835B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611100309.3A Expired - Fee Related CN106532835B (en) | 2016-12-06 | 2016-12-06 | Charging unit and charger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054910A (en) * | 2018-01-10 | 2018-05-18 | 四川阵风科技有限公司 | For electric installation |
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| CN201941762U (en) * | 2011-01-20 | 2011-08-24 | 洛阳市黄河软轴控制器股份有限公司 | High temperature alarm circuit for automotive retarder |
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| CN103326326A (en) * | 2007-12-21 | 2013-09-25 | 三美电机株式会社 | Battery pack |
| CN203561901U (en) * | 2013-11-22 | 2014-04-23 | 长春长光思博光谱技术有限公司 | PWM temperature controller for electrical detection system |
| CN204992755U (en) * | 2015-09-15 | 2016-01-20 | 广东恩亿梯电源有限公司 | Be applied to uninterrupted power source's (UPS) static on -off control cabinet of novel dual supply |
| CN106100040A (en) * | 2016-07-12 | 2016-11-09 | 乐视控股（北京）有限公司 | A kind of method and apparatus preventing charger excess temperature |
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2016
- 2016-12-06 CN CN201611100309.3A patent/CN106532835B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326326A (en) * | 2007-12-21 | 2013-09-25 | 三美电机株式会社 | Battery pack |
| CN201941762U (en) * | 2011-01-20 | 2011-08-24 | 洛阳市黄河软轴控制器股份有限公司 | High temperature alarm circuit for automotive retarder |
| JP2012200113A (en) * | 2011-03-23 | 2012-10-18 | Panasonic Corp | Battery pack and charging system |
| CN203561901U (en) * | 2013-11-22 | 2014-04-23 | 长春长光思博光谱技术有限公司 | PWM temperature controller for electrical detection system |
| CN204992755U (en) * | 2015-09-15 | 2016-01-20 | 广东恩亿梯电源有限公司 | Be applied to uninterrupted power source's (UPS) static on -off control cabinet of novel dual supply |
| CN106100040A (en) * | 2016-07-12 | 2016-11-09 | 乐视控股（北京）有限公司 | A kind of method and apparatus preventing charger excess temperature |
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| CN106532835B (en) | 2019-04-09 |
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