CN203368051U - Charging control circuit and television - Google Patents

Charging control circuit and television Download PDF

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Publication number
CN203368051U
CN203368051U CN 201320185433 CN201320185433U CN203368051U CN 203368051 U CN203368051 U CN 203368051U CN 201320185433 CN201320185433 CN 201320185433 CN 201320185433 U CN201320185433 U CN 201320185433U CN 203368051 U CN203368051 U CN 203368051U
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resistance
charging
triode
battery
chip
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王坚
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Shenzhen TCL New Technology Co Ltd
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Shenzhen TCL New Technology Co Ltd
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Abstract

The utility model discloses a charging control circuit and a television provided with the charging control circuit. The charging control circuit comprises a charging chip, a control chip and a first monitoring module, wherein the charging chip is used for controlling battery charging, the control chip is used for outputting battery state indication signals, and the first monitoring module is used for monitoring the battery state. When the charging chip charges a battery, charging signals are outputted to the first monitoring module, the first monitoring module outputs corresponding control signals to the control chip according to the charging signals and voltage of the battery so as to output battery state indication signals by the control chip according to the control signals. The charging control circuit and the television realize image-text display of the battery state.

Description

Charging control circuit and television set
Technical field
The utility model relates to technical field of electronic products, particularly a kind of charging control circuit and television set.
Background technology
As everyone knows, in prior art, there are many electronic equipments to require to use alternating current and direct current simultaneously, wherein direct current generally refers to the secondary cell can recharge used, be commonly called as rechargeable battery or storage battery, such battery is a lot, lead-acid battery, nickel-cadmium cell, Ni-MH battery, lithium ion battery and lithium polymer battery etc. are arranged, and their characteristic is different, but common characteristic is to can be repeatedly charged and discharged to use hundreds of times to 1,000 times.In order to allow electronic equipment can use alternating current and direct current simultaneously, be provided with special charging circuit and commutation circuit and protective circuit in the inside of electronic equipment.General charging circuit all carries indicator light, makes the demonstration of charged state of LED, can't realize on the screen of TV more directly perceived showing with pictograph for information about.
The utility model content
Main purpose of the present utility model is to provide a kind of charging control circuit, is intended to realize that the picture and text of battery status information show.
To achieve these goals, the utility model provides a kind of charging control circuit, this charging control circuit comprises charging chip for controlling battery charging, for the control chip that carries out the output of battery status index signal with for monitoring the first monitoring modular of described battery status, when charging chip is charged to battery, output charging signals to the first monitoring modular, this first monitoring modular controls signal to control chip accordingly according to the Voltage-output of this charging signals and battery, for control chip, according to described control signal, exports the battery status index signal.
Preferably, described charging control circuit also comprises the second monitoring modular whether normally connected for monitoring power supply, the input of this second monitoring modular is connected with described charging chip, output is connected with described control chip, and when charging chip powers on, this charging chip output power on signal to the second monitoring modular, this second monitoring modular controls signal to control chip accordingly according to described power on signal output, for control chip output power-up state index signal.
Preferably, described the second monitoring modular comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first triode and the first diode; Wherein the first triode is the PNP triode, and its emitter is connected with the positive pole of power supply, and base stage is connected with charging chip by the first resistance, the second resistance, and collector electrode is by the 3rd resistance, the 4th grounding through resistance; The first diode is voltage stabilizing didoe, its plus earth, and negative electrode is connected to the common port of the 3rd resistance and the 4th resistance, and is connected with described control chip by the 5th resistance; One end of the 6th resistance is connected with the emitter of described the first triode, and the other end is connected to the common port of the first resistance and the second resistance.
Preferably, between the emitter of described the second triode and the positive pole of power supply, also be connected one second light-emitting diode, the anode of this second light-emitting diode is connected with the positive pole of power supply, and negative electrode is connected with the emitter of the second triode.
Preferably, described the first monitoring modular comprises the first monitoring means and the second monitoring means, the signal input part of this first monitoring means is connected with described charging chip, signal output part is connected with described control chip, and when receiving the charging signals of described charging chip output, output charging index signal, to control chip, is exported the battery charging state index signal for control chip according to this charging index signal; The input of described the second monitoring means is connected with the positive pole of described battery, output is connected with described control chip, and control signal to accordingly control chip according to the Voltage-output of battery, export battery abnormality index signal for control chip according to described control signal.
Preferably, described the first monitoring means comprises the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the second triode and the second diode; Wherein the second triode is the PNP triode, and its emitter is connected with the positive pole of power supply, and base stage is connected with charging chip by the 7th resistance, the 8th resistance, and collector electrode is by the 9th resistance, the tenth grounding through resistance; The second diode is voltage stabilizing didoe, its plus earth, and negative electrode is connected to the common port of the 9th resistance and the tenth resistance, and is connected with described control chip by the 11 resistance; One end of the 12 resistance is connected with the emitter of described the second triode, and the other end is connected to the common port of the 7th resistance and the 8th resistance.
Preferably, between the emitter of described the first triode and the positive pole of power supply, also be connected one first light-emitting diode, the anode of this first light-emitting diode is connected with the positive pole of power supply, and negative electrode is connected with the emitter of the first triode.
Preferably, described the second monitoring modular comprises the 13 resistance, the 14 resistance, the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, the 19 resistance, the 20 resistance, the 21 resistance, the 22 resistance, the first field effect transistor, the 3rd triode, the 4th triode, the 3rd diode, the 4th diode and switch element; Wherein the drain electrode of the first field effect transistor is connected with the positive pole of battery, and grid is connected with the positive pole of battery by the 13 resistance, and source electrode is connected with the collector electrode of the 3rd triode by the 14 resistance; The 4th triode is the NPN triode, its grounded emitter, and base stage is connected with control chip by the 15 resistance, and collector electrode connects by the grid of described the first field effect transistor of the 16 resistance; The 3rd triode is the NPN triode, its grounded emitter, and base stage is by the 17 grounding through resistance, and collector electrode is connected with control chip by the 18 resistance, the 19 resistance; The 3rd diode is voltage stabilizing didoe, and its anode is connected with the source electrode of the first field effect transistor by the 20 resistance, and negative electrode is connected with the base stage of described the 3rd triode by the 21 resistance; The 4th diode is voltage stabilizing didoe, and its negative electrode is connected to the common port of the 18 resistance and the 19 resistance, plus earth; The 22 resistance is parallel to the two ends of described the 4th diode; Described switch element is connected with the source electrode of described the first field effect transistor, and according to the operating state of described the 3rd diode of voltage control of the source electrode of this first field effect transistor.
Preferably, described switch element comprises the first electric capacity, the 23 resistance, the 24 resistance and three terminal integrated voltage stabilizer, wherein the input of three terminal integrated voltage stabilizer is connected with the source electrode of described the first field effect transistor by the 23 resistance, output is connected with the negative electrode of described the 3rd diode, common ground end ground connection, and be connected with the input of this three terminal integrated voltage stabilizer by the 24 resistance; The first Capacitance parallel connection is in the two ends of described the 24 resistance.
The utility model also provides a kind of television set, this television set comprises charging control circuit, this charging control circuit comprises for controlling the charging chip of battery charging, for carrying out the control chip of battery status index signal output and for monitoring the first monitoring modular of described battery status, when charging chip is charged to battery, output charging signals to the first monitoring modular, this first monitoring modular controls signal to control chip accordingly according to the Voltage-output of this charging signals and battery, export the battery status index signal for control chip according to described control signal.
The utility model is by the state of the first monitoring module monitors battery, and the state information of battery is converted to corresponding control signal exports control chip to, export the battery status index signal for control chip according to described control signal, thereby realized that the picture and text of battery status show.Therefore the state information that the charging control circuit that the utility model provides can more intuitively be checked battery, thus more user-friendly.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model charging control circuit one embodiment.
The realization of the utility model purpose, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, the structural representation that Fig. 1 is the utility model charging control circuit one embodiment.The charging control circuit that the present embodiment provides comprises charging chip 10 for controlling battery V1 charging, for the control chip 20 that carries out the output of battery status index signal with for monitoring the first monitoring modular 30 of described battery V1 state, when 10 couples of battery V1 of charging chip are charged, output charging signals to the first monitoring modular 30, this first monitoring modular 30 controls signal to control chip 20 accordingly according to the Voltage-output of this charging signals and battery V1, for control chip 20, according to described control signal, exports the battery status index signal.
In the present embodiment, above-mentioned battery V1 condition indicative signal comprises battery V1 charged state index signal and battery V1 abnormality index signal, for example, when battery V1 is charged, the first monitoring modular 30 will be exported a level signal to control chip 20, control chip 20 will carry out the picture and text demonstration to control display screen according to this level signal output battery V1 charged state index signal, thereby show that battery V1 enters charged state; Battery V1 is in charging process, if during the electric voltage exception (higher) of battery V1 output, the first monitoring modular 30 will be exported a level signal to control chip 20, control chip 20 will carry out the abnormal picture and text demonstration of battery to control display screen according to this level signal output battery V1 abnormality index signal, and control charging chip 10 stops the charging to battery V1.
The utility model is by the state of the first monitoring modular 30 monitoring battery V1, and the state information of battery is converted to corresponding control signal exports control chip 20 to, advance according to described control signal output battery status index signal for control chip 20, thereby realized that the picture and text of battery status show.Therefore the state information that the charging control circuit that the utility model provides can more intuitively be checked battery, thus more user-friendly.
Further, based on above-described embodiment, in the present embodiment, above-mentioned charging control circuit also comprises the second monitoring modular 40 whether normally connected for monitoring power supply, the input of this second monitoring modular 40 is connected with described charging chip 10, output is connected with described control chip 20, and when charging chip 10 powers on, these charging chip 10 output power on signal to the second monitoring modulars 40, this second monitoring modular 40 controls signal to control chip 20 accordingly according to described power on signal output, for control chip 20 output power-up state index signals.
Particularly, above-mentioned the second monitoring modular 40 comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the first triode Q1 and the first diode D1; Wherein the first triode Q1 is the PNP triode, and its emitter is connected with the positive pole of power supply U1, and base stage is connected with charging chip 10 by the first resistance R 1, the second resistance R 2, and collector electrode is by the 3rd resistance R 3, the 4th resistance R 4 ground connection; The first diode D1 is voltage stabilizing didoe, its plus earth, and negative electrode is connected to the common port of the 3rd resistance R 3 and the 4th resistance R 4, and is connected with described control chip 20 by the 5th resistance R 5; One end of the 6th resistance R 6 is connected with the emitter of described the first triode Q1, and the other end is connected to the common port of the first resistance R 1 and the second resistance R 2.
In the present embodiment, the level state of the pin (PG) that the second monitoring modular 40 Real-Time Monitoring charging chips 10 are connected with this second monitoring modular 40, after the U1 that connects with the mains, charging chip 10 sets low level by pin (PG), thereby make the first triode Q1 conducting, the voltage of power supply U1 is by the first triode Q1, be loaded on the 4th resistance R 4 two ends after the 3rd resistance R 3, by the first diode D1, the voltage at the 4th resistance R 4 two ends is carried out to clamper simultaneously, thereby obtain a high level signal, this high level signal transfers to a signal input pin (PG) of control chip 20 after by the 5th resistance R 5, this control chip 20 will show the respective icon of power-up state according to this high level signal output power-up state index signal to control above-mentioned display screen.
Further, between the positive pole of the emitter of above-mentioned the first triode Q1 and power supply U1, also be connected one first LED 1, the anode of this first LED 1 is connected with the positive pole of power supply U1, and negative electrode is connected with the emitter of the first triode Q1.
During work, after power supply U1 is connected with charging chip 10 is normal, charging chip 10 pass through pin (PG) output low level, make the first triode Q1 conducting, thereby make the first LED 1 be lit, with reminding user, power supply U1 normally is connected with charging chip 10, and charging chip 10 normally powers on.In this embodiment, shown owing to having increased by 1 pair of power-up state of the first LED, thereby guaranteed that above-mentioned display screen, under the state of not opening, still has prompting function.
Particularly, above-mentioned the first monitoring modular 30 comprises the first monitoring means 31 and the second monitoring means 32, the signal input part of this first monitoring means 31 is connected with described charging chip 10, signal output part is connected with described control chip 20, and when receiving the charging signals of described charging chip 10 outputs, output charging index signal, to control chip 20, is carried out battery V1 charged state demonstration according to this charging index signal output battery V1 charged state index signal to control above-mentioned display screen for control chip 20; The input of described the second monitoring means 32 is connected with the positive pole of described battery V1, output is connected with described control chip 20, and controlling signal to accordingly control chip 20 according to the Voltage-output of battery V1, this control chip 20 carries out battery according to this control signal output battery V1 abnormality index signal abnormality to control above-mentioned display screen shows.
Above-mentioned the first monitoring means 31 comprises the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R the 10, the 11 resistance R the 11, the 12 resistance R 12, the second triode Q2 and the second diode D2; Wherein the second triode Q2 is the PNP triode, and its emitter is connected with the positive pole of power supply U1, and base stage is connected with charging chip 10 by the 7th resistance R 7, the 8th resistance R 8, and collector electrode is by the 9th resistance R 9, the tenth resistance R 10 ground connection; The second diode D2 is voltage stabilizing didoe, its plus earth, and negative electrode is connected to the common port of the 9th resistance R 9 and the tenth resistance R 10, and is connected with described control chip 20 by the 11 resistance R 11; One end of the 12 resistance R 12 is connected with the emitter of described the second triode Q2, and the other end is connected to the common port of the 7th resistance R 7 and the 8th resistance R 8.
Above-mentioned the second monitoring means 32 comprises the 13 resistance R the 13, the 14 resistance R the 14, the 15 resistance R the 15, the 16 resistance R the 16, the 17 resistance R the 17, the 18 resistance R the 18, the 19 resistance R the 19, the 20 resistance R the 20, the 21 resistance R the 21, the 22 resistance R 22, the first field effect transistor Q11, the 3rd triode Q3, the 4th triode Q4, the 3rd diode D3, the 4th diode D4 and switch element 321; Wherein the drain electrode of the first field effect transistor Q11 is connected with the positive pole of battery V1, and grid is connected with the positive pole of battery V1 by the 13 resistance R 13, and source electrode is connected with the collector electrode of the 3rd triode Q3 by the 14 resistance R 14; The 4th triode Q4 is the NPN triode, its grounded emitter, and base stage is connected with control chip 20 by the 15 resistance R 15, and collector electrode connects by the grid of described the first field effect transistor Q11 of the 16 resistance R 16; The 3rd triode Q3 is the NPN triode, its grounded emitter, and base stage is by the 17 resistance R 17 ground connection, and collector electrode is connected with control chip 20 by the 18 resistance R the 18, the 19 resistance R 19; The 3rd diode D3 is voltage stabilizing didoe, and its anode is connected with the source electrode of the first field effect transistor Q11 by the 20 resistance R 20, and negative electrode is connected with the base stage of described the 3rd triode Q3 by the 21 resistance R 21; The 4th diode D4 is voltage stabilizing didoe, and its negative electrode is connected to the common port of the 18 resistance R 18 and the 19 resistance R 19, plus earth; The 22 resistance R 22 is parallel to the two ends of described the 4th diode D4; Described switch element 321 is connected with the source electrode of described the first field effect transistor Q11, and according to the operating state of described the 3rd diode D3 of voltage control of the source electrode of this first field effect transistor Q11.
In the present embodiment, the level state of the pin (STAT) that the first monitoring means 31 Real-Time Monitoring charging chips 10 are connected with this first monitoring means 31, after the U1 that connects with the mains, charging chip 10 will be adjusted charging current and charging voltage, thereby V1 is charged to battery, and pin (STAT) is set low to level.Now, to make the second triode Q2 conducting, the voltage of power supply U1 is loaded on the tenth resistance R 10 two ends after by the second triode Q2, the 9th resistance R 9, by the second diode D2, the voltage at the tenth resistance R 10 two ends is carried out to clamper simultaneously, thereby obtain a high level signal, this high level signal transfers to a signal input pin (CHARGE) of control chip 20 after by the 11 resistance R 11, and this control chip 20 will show the respective icon of charged state according to this high level signal output battery V1 charged state index signal to control above-mentioned display screen.
In charging process, the current voltage of the second monitoring means 32 Real-Time Monitoring battery V1, the voltage of battery V1 is in normal range (NR) the time, the voltage of battery V1 will be by after the first field effect transistor Q11, be loaded on the negative electrode of the 3rd diode D3 through the 20 resistance R 20, and after making the 3rd diode D3 reverse-conducting, be loaded on again the base stage of the 3rd triode Q3 after the 21 resistance R 21, making the 3rd triode Q3 conducting, is low level thereby make the signal that inputs to control chip 20 through the 18 resistance R 18 and the 19 resistance R 19.When the overtension of battery V1, the negative electrode that switch element 321 will be exported the 3rd diode D3 carries out clamper, and the voltage with the negative electrode that reduces the 3rd diode D3, make the 3rd diode D3 and the 3rd triode Q3 all end.The voltage of battery V1 is loaded on the 22 resistance R 22 two ends through the first field effect transistor Q11, the 14 resistance R the 14, the 18 resistance R 18, and by the 4th diode D4, the voltage at the 22 resistance R 22 two ends is carried out to clamper.The signal that now through the 19 resistance R 19, inputs to control chip 20 1 signal input pins (OVP) is high level, after control chip 20 receives this high level signal, output battery V1 abnormality index signal shows the abnormal corresponding graph text information of battery to control display screen, and control charging chip 10 stops battery V1 is charged.
Particularly, based on above-described embodiment, in the present embodiment, above-mentioned switch element 321 comprises the first capacitor C the 1, the 23 resistance R the 23, the 24 resistance R 24 and three terminal integrated voltage stabilizer U2, wherein the input of three terminal integrated voltage stabilizer U2 is connected with the source electrode of described the first field effect transistor Q11 by the 23 resistance R 23, output is connected with the negative electrode of described the 3rd diode D3, common ground end ground connection, and be connected with the input of this three terminal integrated voltage stabilizer U2 by the 24 resistance R 24; The first capacitor C 1 is parallel to the two ends of described the 24 resistance R 24.
In the present embodiment, when the voltage of battery V1 during in normal range (NR), three terminal integrated voltage stabilizer U2 is in cut-off state, when the voltage of battery V1 during higher than preset value, three terminal integrated voltage stabilizer U2 is by conducting, thereby drag down the voltage of the 3rd diode D3 negative electrode, make the 3rd diode D3 cut-off, and then make the 3rd triode Q3 cut-off.
Further, between the positive pole of the emitter of described the second triode Q2 and power supply U1, also be connected one second LED 2, the anode of this second LED 2 is connected with the positive pole of power supply, and negative electrode is connected with the emitter of the second triode Q2.
During work, when power supply U1 is charged by 10 couples of battery V1 of charging chip, charging chip 10 pass through pin (STAT) output low level, make the second triode Q2 conducting, thereby make the second LED 2 be lit, with reminding user, battery V1 is in charged state.In this embodiment, because the charged state that has increased by 2 couples of battery V1 of the second LED is shown, thereby guarantee that above-mentioned display screen, under the state of not opening, still has prompting function.
The utility model also provides a kind of television set, and this television set comprises charging control circuit, and the structure of this charging control circuit can, with reference to above-described embodiment, not repeat them here.Naturally, because the television set of the present embodiment has adopted the technical scheme of above-mentioned charging control circuit, so this television set has all beneficial effects of above-mentioned charging control circuit.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.

Claims (10)

1. a charging control circuit, it is characterized in that, comprise charging chip for controlling battery charging, for the control chip that carries out the output of battery status index signal with for monitoring the first monitoring modular of described battery status, when charging chip is charged to battery, output charging signals to the first monitoring modular, this first monitoring modular controls signal to control chip accordingly according to the Voltage-output of this charging signals and battery, for control chip, according to described control signal, exports the battery status index signal.
2. charging control circuit as claimed in claim 1, it is characterized in that, described charging control circuit also comprises the second monitoring modular whether normally connected for monitoring power supply, the input of this second monitoring modular is connected with described charging chip, output is connected with described control chip, and when charging chip powers on, this charging chip output power on signal to the second monitoring modular, this second monitoring modular controls signal to control chip accordingly according to described power on signal output, for control chip output power-up state index signal.
3. charging control circuit as claimed in claim 2, is characterized in that, described the second monitoring modular comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first triode and the first diode; Wherein the first triode is the PNP triode, and its emitter is connected with the positive pole of power supply, and base stage is connected with charging chip by the first resistance, the second resistance, and collector electrode is by the 3rd resistance, the 4th grounding through resistance; The first diode is voltage stabilizing didoe, its plus earth, and negative electrode is connected to the common port of the 3rd resistance and the 4th resistance, and is connected with described control chip by the 5th resistance; One end of the 6th resistance is connected with the emitter of described the first triode, and the other end is connected to the common port of the first resistance and the second resistance.
4. charging control circuit as claimed in claim 3, it is characterized in that, also be connected one first light-emitting diode between the emitter of described the first triode and the positive pole of power supply, the anode of this first light-emitting diode is connected with the positive pole of power supply, and negative electrode is connected with the emitter of the first triode.
5. charging control circuit as claimed in claim 1, it is characterized in that, described the first monitoring modular comprises the first monitoring means and the second monitoring means, the signal input part of this first monitoring means is connected with described charging chip, signal output part is connected with described control chip, and, when receiving the charging signals of described charging chip output, output charging index signal, to control chip, is exported the battery charging state index signal for control chip according to this charging index signal; The input of described the second monitoring means is connected with the positive pole of described battery, output is connected with described control chip, and control signal to accordingly control chip according to the Voltage-output of battery, export battery abnormality index signal for control chip according to described control signal.
6. charging control circuit as claimed in claim 5, is characterized in that, described the first monitoring means comprises the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the second triode and the second diode; Wherein the second triode is the PNP triode, and its emitter is connected with the positive pole of power supply, and base stage is connected with charging chip by the 7th resistance, the 8th resistance, and collector electrode is by the 9th resistance, the tenth grounding through resistance; The second diode is voltage stabilizing didoe, its plus earth, and negative electrode is connected to the common port of the 9th resistance and the tenth resistance, and is connected with described control chip by the 11 resistance; One end of the 12 resistance is connected with the emitter of described the second triode, and the other end is connected to the common port of the 7th resistance and the 8th resistance.
7. charging control circuit as claimed in claim 6, it is characterized in that, also be connected one second light-emitting diode between the emitter of described the second triode and the positive pole of power supply, the anode of this second light-emitting diode is connected with the positive pole of power supply, and negative electrode is connected with the emitter of the second triode.
8. charging control circuit as claimed in claim 5, it is characterized in that, described the second monitoring modular comprises the 13 resistance, the 14 resistance, the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, the 19 resistance, the 20 resistance, the 21 resistance, the 22 resistance, the first field effect transistor, the 3rd triode, the 4th triode, the 3rd diode, the 4th diode and switch element; Wherein the drain electrode of the first field effect transistor is connected with the positive pole of battery, and grid is connected with the positive pole of battery by the 13 resistance, and source electrode is connected with the collector electrode of the 3rd triode by the 14 resistance; The 4th triode is the NPN triode, its grounded emitter, and base stage is connected with control chip by the 15 resistance, and collector electrode connects by the grid of described the first field effect transistor of the 16 resistance; The 3rd triode is the NPN triode, its grounded emitter, and base stage is by the 17 grounding through resistance, and collector electrode is connected with control chip by the 18 resistance, the 19 resistance; The 3rd diode is voltage stabilizing didoe, and its anode is connected with the source electrode of the first field effect transistor by the 20 resistance, and negative electrode is connected with the base stage of described the 3rd triode by the 21 resistance; The 4th diode is voltage stabilizing didoe, and its negative electrode is connected to the common port of the 18 resistance and the 19 resistance, plus earth; The 22 resistance is parallel to the two ends of described the 4th diode; Described switch element is connected with the source electrode of described the first field effect transistor, and according to the operating state of described the 3rd diode of voltage control of the source electrode of this first field effect transistor.
9. charging control circuit as claimed in claim 8, it is characterized in that, described switch element comprises the first electric capacity, the 23 resistance, the 24 resistance and three terminal integrated voltage stabilizer, wherein the input of three terminal integrated voltage stabilizer is connected with the source electrode of described the first field effect transistor by the 23 resistance, output is connected with the negative electrode of described the 3rd diode, common ground end ground connection, and be connected with the input of this three terminal integrated voltage stabilizer by the 24 resistance; The first Capacitance parallel connection is in the two ends of described the 24 resistance.
10. a television set, is characterized in that, comprises charging control circuit as claimed in any one of claims 1-9 wherein.
CN 201320185433 2013-04-12 2013-04-12 Charging control circuit and television Active CN203368051U (en)

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Application Number Priority Date Filing Date Title
CN 201320185433 CN203368051U (en) 2013-04-12 2013-04-12 Charging control circuit and television

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CN 201320185433 CN203368051U (en) 2013-04-12 2013-04-12 Charging control circuit and television

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106603948A (en) * 2016-11-01 2017-04-26 广州视源电子科技股份有限公司 High/low voltage protection method and system of TV set with storage battery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106603948A (en) * 2016-11-01 2017-04-26 广州视源电子科技股份有限公司 High/low voltage protection method and system of TV set with storage battery
CN106603948B (en) * 2016-11-01 2019-06-28 广州视源电子科技股份有限公司 A kind of battery TV high-low pressure guard method and system

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