CN107733004A - Multi-platform hardware dynamic charging instruction and the disconnected device of charging lock - Google Patents
Multi-platform hardware dynamic charging instruction and the disconnected device of charging lock Download PDFInfo
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- CN107733004A CN107733004A CN201710884895.3A CN201710884895A CN107733004A CN 107733004 A CN107733004 A CN 107733004A CN 201710884895 A CN201710884895 A CN 201710884895A CN 107733004 A CN107733004 A CN 107733004A
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- 239000003086 colorant Substances 0.000 description 3
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Classifications
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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
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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
-
- 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
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
- H02J7/0049—Detection of fully charged condition
Abstract
The present invention proposes a kind of multi-platform hardware dynamic charging instruction and the disconnected device of charging lock, including：Cut-offfing control circuit includes the first PMOS and the first NMOS tube, first NMOS tube is connected between external power input and the first PMOS, for controlling the first PMOS, decision circuit includes first comparator, the positive pole termination charge power supply of first comparator, negative pole end is grounded, and negative input obtains reference voltage by divider resistance from charge power supply；LED indicating circuit includes：Second NMOS tube, the 3rd NMOS tube and the first LED, the second LED, wherein, the second NMOS tube is connected in series with the first LED, and the 3rd NMOS tube is connected in parallel with the second LED.The present invention cut-offs control action by setting multiple metal-oxide-semiconductors to be used as, and by the cooperation of metal-oxide-semiconductor and comparator, lighting or closing for LED display circuit is controlled, so as to play charging indicative function.
Description
Technical field
The present invention relates to technical field of electronic equipment, more particularly to a kind of multi-platform hardware dynamic charging instruction and charging lock
Disconnected device.
Background technology
In the case where current Miniature Terminal equipment develops rapidly, the manufacturer of each big chain-wales is proposed various work(
Energy, various types of power managements add audio processing chip, carry out supporting associated acp chip and use.But there is individual problem
Precisely due to the limitation of technology and other conditions, the chip of part manufacturer can not accomplish the internal function (example for carrying charging instruction
Such as, spreadtrum 9820).It is not actuated in chip simultaneously when some charge functions are not that very perfect chip forms charging circuit
In the case of can not realize charging instruction, even and if when user does not extract charge port it is fully charged after charger be also possible to continue
Power transmission can so cause charger or the serious heating of power management chip and a part of potential safety hazard to battery.Although increase
The plug-in charging chip that part manufacturer releases can solve these problems, but the Cost Problems meeting for some low and middle-end machines
Increase and former chip functions are possible to waste.
The content of the invention
The purpose of the present invention is intended at least solve one of described technological deficiency.
Therefore, it is an object of the invention to propose a kind of multi-platform hardware dynamic charging instruction and the disconnected device of charging lock, lead to
Cross and set multiple metal-oxide-semiconductors, by the cooperation of metal-oxide-semiconductor and comparator, to control lighting for LED display circuit as control action is cut-off
Or close, so as to play charging indicative function.
To achieve these goals, embodiments of the invention provide a kind of multi-platform hardware dynamic charging instruction and charging lock
Disconnected device, including：Control circuit, decision circuit and LED indicating circuit are cut-off, wherein,
The control circuit of cut-offfing includes the first PMOS and the first NMOS tube, and first NMOS tube is connected to external electrical
Between source input and first PMOS, for controlling the institute of first PMOS, first PMOS and rear
State decision circuit and LED indicating circuit be connected in parallel, for as control LED display circuit and whole charging circuit break-make,
Wherein, first resistor is connected between the grid of first NMOS tube and drain electrode and is connected to the control delivery outlet of device chip,
The source electrode of first NMOS tube connects the source electrode of first PMOS, the drain electrode connection described first of first NMOS tube
The grid of PMOS,
The decision circuit includes first comparator, the positive pole termination charge power supply of the first comparator, negative pole termination
Ground, negative input obtain reference voltage by divider resistance from charge power supply, and positive input connects battery, first ratio
Output end compared with device exports decision signal, wherein, it is described to sentence when the voltage of the cell input terminal is higher than the reference voltage
Certainly signal is high level, and when the voltage of the input of the battery is less than the reference voltage, the decision signal is low electricity
It is flat；
The LED indicating circuit includes：Second NMOS tube, the 3rd NMOS tube and the first LED, the second LED, wherein,
Second NMOS tube is connected in series with first LED, and the 3rd NMOS tube is connected in parallel with second LED,
The grid of second NMOS tube and the grid of the 3rd the NMOS tube output end with the first comparator of the decision circuit respectively
It is connected, lighting and closing for first LED and the second LED is controlled with the decision signal exported according to the decision circuitry
Close, wherein, when the decision signal is high level, first LED is lighted, and second LED is closed；Sentence when described
When certainly signal is low level, first LED is closed, and second LED is lighted.
Further, first LED is different with the second LED display color.
Further, in addition to：Second comparator, wherein, the positive pole termination charge power supply of second comparator, negative pole end
Ground connection, negative input obtain reference voltage by divider resistance from charge power supply, and positive input connects battery, and described second
The output of comparator terminates the grid of the 3rd NMOS tube, and the output of the first comparator terminates second NMOS tube
Grid, wherein, the first comparator exports the first reference voltage, and second comparator exports the second reference voltage, described
First reference voltage is less than second reference voltage.
Further, when the voltage of the cell input terminal is between first reference voltage and the second reference voltage
When, first LED is lighted, and the second LED is lighted, and shows colour mixture；
When the voltage of the cell input terminal is located at below first reference voltage, first LED is closed, the
Two LEDs are lighted；
When the voltage of the cell input terminal is located at more than second reference voltage, first LED is lighted, the
Two LEDs are closed.
Further, in addition to：Second comparator, the 3rd LED, the second PMOS and the 4th NMOS tube, wherein, described
The positive pole termination charge power supply of two comparators, negative pole end ground connection, negative input are obtained by divider resistance from charge power supply
Reference voltage, positive input connect battery, and the output of second comparator terminates the grid of second NMOS tube, and described the
The output of one comparator terminates the grid of the 3rd NMOS tube,
3rd LED, the second PMOS and the 4th NMOS tube are sequentially connected, wherein, one end of the 3rd LED
Power supply, the source electrode of another termination second PMOS are connect, the drain electrode of second PMOS connects the leakage of the 4th NMOS tube
Pole, the source ground of the 4th NMOS tube, the grid of second PMOS connect the grid of second NMOS tube, and described
The grid of four NMOS tubes connects power supply, wherein, the first comparator exports the first reference voltage, the second comparator output the
Two reference voltages, first reference voltage are less than second reference voltage.
Further, when the voltage of the cell input terminal is between first reference voltage and the second reference voltage
When, the 3rd LED is lighted；
When the voltage of the cell input terminal is located at below first reference voltage, first LED and the 3rd
LED is closed, and the second LED is lighted；
When the voltage of the cell input terminal is located at more than second reference voltage, first LED is lighted, the
Two LEDs and the 3rd LED are closed.
Further, first LED is green light, and second LED is red colored lamp, and the 3rd LED is Huang
Colored lights.
Multi-platform hardware dynamic charging instruction according to embodiments of the present invention and the disconnected device of charging lock, it is multiple by setting
Metal-oxide-semiconductor, by the cooperation of metal-oxide-semiconductor and comparator, controls lighting or closing for LED display circuit as control action is cut-off, from
And play charging indicative function.Also, the present invention can realize two, three controls shown even more than LED.Pass through structure
Function that simple circuit can be indicated with realizing hardware dynamic charging and charging lock breaks.The present invention is applicable many platforms, can be with
Charging instruction is realized in the case where not leaning on software, does not allow user to think that machine breaks down；Pass through the change instruction charging shape of state
State, while support charging circuit to be fully disconnected, there is the characteristics of cost is low, result is simple, control effect is good.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the schematic diagram according to the multi-platform hardware dynamic of embodiment of the present invention charging instruction and the disconnected device of charging lock；
Fig. 2 is according to the disconnected circuit diagram of the dynamic charging instruction of the double-colored instruction of the embodiment of the present invention and lock；
Fig. 3 is the tri-colour LED colour mixture schematic diagram according to the embodiment of the present invention；
Fig. 4 is according to the disconnected circuit diagram of the dynamic of one embodiment of the invention charging instruction and lock；
Fig. 5 is according to the disconnected circuit diagram of the dynamic of another embodiment of the present invention charging instruction and lock.
Embodiment
Embodiments of the invention are described below in detail, the example of embodiment is shown in the drawings, wherein identical from beginning to end
Or similar label represents same or similar element or the element with same or like function.Retouched below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
A kind of present invention proposes multi-platform hardware dynamic charging instruction and charging lock breaks device, can solve it is existing without
The power management chip that the mobile processing platform of charging indication function is supporting can not realize the problem of dynamic charging indicates, Yi Jishi
The function of indicator light circuit is now disconnected from charging end disconnecting circuit or only, realizes more charging instruction states.
The device as shown in figure 1, the multi-platform hardware dynamic charging instruction of the embodiment of the present invention and charging lock break, including：Open
Disconnected control circuit 100, decision circuit 200 and LED indicating circuit 300.
Specifically, cut-offfing control circuit 100 includes the first PMOS Q3 and the first NMOS tube Q4, the first NMOS tube Q4 connections
Between external power input and the first PMOS Q3, for controlling the first PMOS Q3, the first PMOS Q3 and rear
Decision circuit 200 and LED indicating circuit 300 are connected in parallel, for as control LED indicating circuit 300 and whole charging circuit
Break-make, realize chip not start before be regular path, chip startup after the lock of charging path can be controlled to open.Its
In, first resistor is connected between the first NMOS tube Q4 grid and drain electrode and is connected to the control delivery outlet of device chip, first
NMOS tube Q4 source electrode connects the first PMOS Q3 source electrode, the first NMOS tube Q4 the first PMOS Q3 of drain electrode connection grid
Pole.
First PMOS Q3 is connected on the role for taking on switch on charging path, and its position, which determines, cut-offs control circuit
100 function：Inputted when the first PMOS Q3 is connected on external power source between chip charging input end (namely rear stage),
When LED indicating circuit 300 is connected in parallel on rear end, this, which cut-offs control circuit 100, can realize dynamic instruction circuit and whole charging
Outside charging cannot be introduced into equipment in the case of the break-make of circuit, that is, closing.
When charging path normally connects, the first PMOS Q3 and dynamic instruction circuit below are all parallel to charging end
When, this cut-offs circuit and is just only used for control dynamic charging indicating section.First PMOS Q3 control, that is, grid
Voltage is by the first NMOS tube Q4 Determines.First NMOS tube Q4 is connected on external power input and the first PMOS Q3
Grid between, source electrode is connected on external power input, and drain electrode is connected on the first PMOS Q3 grid.First NMOS tube Q4 simultaneously
Grid and drain electrode between connected by a larger first resistor of resistance and be connected to the control delivery outlet of device chip.At this
In the embodiment of invention, first resistor uses 500K, can contain reverse current as far as possible.Due to needing here to the
One PMOS Q3 provides the low level of an acquiescence, therefore the control port selected must have the inside drop-down of acquiescence, and
First NMOS tube Q4 grid voltage control level needs the output control pin with device chip to match.If for example, from common
1.8V GPIO control pin, then need 1.8V or more lower can be with the NMOS tube of unlatching.
To adjudicate battery status, including first comparator U1A, first comparator U1A positive pole terminates decision circuit 200
Charge power supply, negative pole end ground connection, negative input obtain reference voltage, positive input by divider resistance from charge power supply
Battery is connect, first comparator U1A output end exports decision signal, wherein, when the voltage of cell input terminal is higher than reference voltage
When, decision signal is high level, and when the voltage of the input of battery is less than reference voltage, decision signal is low level.
Specifically, when only needing to judge a voltage standard, as long as a univoltage comparator can be to realize, now
The instruction of two kinds of lamps can be realized, for example, it is red and green.The anode that first comparator U1A now powers is connected in charge power supply,
Negative terminal is connected to above ground and gone.Electricity of the first comparator U1A negative inputs IN- by two divider resistances (R2, R3) from charging
A reference voltage is obtained on the voltage of source, can control judgement standard voltage by adjusting the value of divider resistance herein.First
Comparator U1A positive input IN+ is connected to the output of battery above.The judgement letter of first comparator U1A output end output
Number, for the output result of the final part of decision circuit 200, it is directly connected on the control metal-oxide-semiconductor of rear end LED indicating section.
Of course for normal output high level, it is also necessary to output is terminated to ground face by a pull-up resistor, recommends 1K to 10K, this
Place have selected resistance R4, resistance 4.7K.When the voltage of cell input terminal is more than the standard value of setting, first comparator U1A
A high level can be exported；And when the voltage of cell input terminal is less than the normal voltage set, first comparator U1A can be exported
One low level.So just realize the differentiation of cell voltage location.
LED indicating circuit 300 can realize the state instruction of two-way and the above, such as red, green；It is red, orange, green
Color is more.When only needing most basic red, green instruction, it is only necessary to which a simple output signal is adjudicated can be with
Realize instruction color different under different voltage status.Due to needing the change of same level to indicate different states, therefore
Red light and green light need two different circuits to realize this function.
It is described in detail with reference to Fig. 2.Wherein, LED1 is red light, and LED2 is green light；V1 is defeated for simulation external charging
Enter end, V2 is simulated television voltage input end, and V3 is that analog chip controls output signal, and U1A is comparator.
LED indicating circuit 300 includes：Second NMOS tube Q1, the 3rd NMOS tube Q2 and the first LED LED2, the second LED
LED1.Wherein, the second NMOS tube Q1 and the first LED LED2 is connected in series, and the 3rd NMOS tube Q2 is in parallel with the second LED LED1
Connection, the second NMOS tube Q1 grid and the 3rd NMOS tube Q2 grid are respectively with the first comparator U1A's of decision circuit 200
Output end is connected, and lighting for the first LED LED2 and the second LED LED1 is controlled with the decision signal exported according to decision circuitry
And closing.
Specifically, the first LED LED2 is controlled using the second NMOS tube Q1 to lamp, when decision circuit 200 provides
During one high level instruction, the second NMOS tube Q1 is opened, and the first LED LED2 is lighted；And what is provided when decision circuit 200 is low
During level indicating, the second NMOS tube Q1 is closed, and the first LED LED2 can also be closed.
Second LED LED1 then uses a different control mode：When decision circuit 200 exports high level, the 3rd
NMOS tube Q2 is opened, and now current direction path will be oriented to here, and resistance above plays metering function, in such case
Under, the second LED LED1 is closed.When decision circuit 200 provide be low level instruction when, current path can be oriented to the 2nd LED
Lamp LED1 sides, the second LED LED1 are lighted.
In order to simplify logic, therefore simplest circuit is used, so this partial circuit might have part leakage current,
Adjusting resistance can be near the minimum conducting electric current this electric current lock to LED, for example the present invention is using 510 ohm of resistance
5mA or so has been limited the current to, this electric current is feeder ear, that is, the consumption of charging end rather than the consumption of terminal, because
This is acceptable；If wanting complete lock below to break, realize that 0 consumption can also.
To sum up, when decision signal is high level, the first LED LED2 is lighted, and the second LED LED1 is closed；Work as judgement
When signal is low level, the first LED LED2 is closed, and the second LED LED1 is lighted.
In one embodiment of the invention, the first LED LED2 and the second LED LED1 display colors are different.Wherein,
First LED LED2 can be green, and the second LED LED1 can be red.
It should be noted that in order to realize more accurate, increasingly complex battery capacity indication.For example, the charging instruction of three colors
When, it is necessary to some circuits are added again.In one embodiment of the invention, three colors instruction includes two kinds of implementations：It is a kind of
Be allow it is red and green and meanwhile it is bright realize the colour mixture of light (as shown in Figure 3), it is so as to show yellow, this to realize that circuit compares
It is simple；Another kind is the 3rd lamp of addition, and this implementation is more complicated, but expansibility is also stronger, with same
Thinking to may be added to four lamps, five lamps etc. even more more.
(1) do not increase LED, increase by the second comparator U2A, colour mixture is realized
The implementation is using red light, the asynchronous display of green light.The intermediateness of cell voltage is same using red and green
Shi Liang method is realized, at this moment can be shown as yellow due to colour mixture.In this case three parts that integrated circuit is formed
Some changes may occur：1st, cut-off control circuit 100 and do not do and change.2nd, decision circuit 200 increases extra second
Comparator U2A realizes the instruction to second voltage, second comparator U2A other parts connection and first comparator
It is completely the same, the difference is that reference input part (IN-) and output.The reference input of this comparator and first comparator one
Rise and cell voltage is divided into three scopes：First reference voltage, the second reference voltage, the first reference voltage and the second reference voltage
Between.
The connection of two lamps of LED indicating circuit 300 does some changes, and green light is connected to the first comparator of substandard voltage
U1A is exported, and red light is connected to the second comparator U2A outputs of high standard voltage.So can be to realize below high voltage standard point
When red, low-voltage standard point above green light, then end-state is exactly that the following red light of low-voltage standard point gives a green light and do not worked,
When red green light between low-voltage standard point and high voltage standard point, and high voltage standard point above green light sends out a warning and not worked.
As shown in figure 4, LED1 is red light, LED2 is green light；V1 is simulation external charging input, and V2 is simulated television electricity
Input is pressed, V3 is that analog chip controls output signal, and U1A is comparator 1, and U2A is comparator 2.
Second comparator U2A positive pole termination charge power supply, negative pole end ground connection, negative input by divider resistance (R7,
R8 reference voltage) is obtained from charge power supply, positive input connects battery, and the second comparator U2A output terminates the 3rd NMOS
Pipe Q2 grid, first comparator U1A the second NMOS tube Q1 of output termination grid, wherein, first comparator U1A outputs the
One reference voltage, the second comparator U2A export the second reference voltage, and the first reference voltage is less than the second reference voltage.
When the voltage of cell input terminal is between the first reference voltage and the second reference voltage, the first LED LED2
Light, the second LED LED1 is lighted, and shows colour mixture；
When the voltage of cell input terminal is located at below the first reference voltage, the first LED LED2 is closed, the second LED
LED1 is lighted；
When the voltage of cell input terminal is located at more than the second reference voltage, the first LED LED2 is lighted, the second LED
LED1 is closed.
(2) increase extra the 3rd LED LED3, the second comparator U2A, the second PMOS Q6 and the 4th NMOS tube Q5
An extra amber light is added, allows different lamps bright respectively in different voltage ranges.The composition meeting of same circuit
Change:1st, cut-offfing control circuit 100 need not change.2nd, decision circuit 200 needs one the second extra comparator of addition
U2A.3rd, LED indicating circuit 300, it is necessary first to add an extra instruction amber light, while connect one on the path of amber light
Individual second PMOS Q6 and a 4th NMOS tube Q5 controls the break-make of the path.
The grid of the second PMOS Q6 on amber light path needs the grid with the second NMOS tube Q1 of control green light path
Together, it is connected to the output end of the comparator of high standard voltage；And the grid and other one of the 4th NMOS tube Q5 on amber light path
The NMOS tube Q2 of control the 3rd of individual red light grid is connected to the output end of substandard voltage comparator together.Like this low mark
The quasi- following red light of voltage can be bright, and high standard voltage above green light can be bright.And only when voltage range is in substandard voltage and height
When between normal voltage, the second PMOS Q6 and the 4th NMOS tube Q5 on amber light path can be opened simultaneously, this when amber light
Just can be bright.Generally speaking, the thinking of second three lamps and implementation method can be expanded, and apply in the instruction of more lamps
Face.
As shown in figure 5, LED1 is red light, LED2 is green light, and LED3 is amber light；V1 is to simulate external charging input, V2
For simulated television voltage input end, V3 is that analog chip controls output signal, and U1A is comparator 1, and U2A is comparator 2.
Second comparator U2A, the 3rd LED LED3, the second PMOS Q6 and the 4th NMOS tube Q5, wherein, second compares
Device U2A positive pole termination charge power supply, negative pole end ground connection, negative input is by divider resistance (R7, R8) from charge power supply
Reference voltage is obtained, positive input connects battery, the second comparator U2A the second NMOS tube Q1 of output termination grid, and first
Comparator U1A the 3rd NMOS tube Q2 of output termination grid.
3rd LED LED3, the second PMOS Q6 and the 4th NMOS tube Q5 are sequentially connected, wherein, the 3rd LED LED3's
One termination power, the second PMOS Q6 of another termination source electrode, the second PMOS Q6 drain electrode connect the 4th NMOS tube Q5 drain electrode,
4th NMOS tube Q5 source ground, the second PMOS Q6 grid connect the second NMOS tube Q1 grid, the 4th NMOS tube Q5's
Grid connects power supply, wherein, first comparator U1A exports the first reference voltage, and the second comparator U2A exports the second reference voltage,
First reference voltage is less than the second reference voltage.
When the voltage of cell input terminal is between the first reference voltage and the second reference voltage, the 3rd LED LED3
Light；
When the voltage of cell input terminal is located at below the first reference voltage, the first LED LED2 and the 3rd LED LED3
Close, the second LED LED1 is lighted；
When the voltage of cell input terminal is located at more than the second reference voltage, the first LED LED2 is lighted, the second LED
LED1 and the 3rd LED LED3 is closed.
In one embodiment of the invention, the first LED LED2 is green light, and the second LED LED1 is red colored lamp, the
Three LED LED3 are amber light.
Multi-platform hardware dynamic charging instruction according to embodiments of the present invention and the disconnected device of charging lock, it is multiple by setting
Metal-oxide-semiconductor, by the cooperation of metal-oxide-semiconductor and comparator, controls lighting or closing for LED display circuit as control action is cut-off, from
And play charging indicative function.Also, the present invention can realize two, three controls shown even more than LED.Pass through structure
Function that simple circuit can be indicated with realizing hardware dynamic charging and charging lock breaks.The present invention is applicable many platforms, can be with
Charging instruction is realized in the case where not leaning on software, does not allow user to think that machine breaks down；Pass through the change instruction charging shape of state
State, while support charging circuit to be fully disconnected, there is the characteristics of cost is low, result is simple, control effect is good.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.The scope of the present invention
By appended claims and its equivalent limit.
Claims (7)
- The device 1. a kind of multi-platform hardware dynamic charging instruction and charging lock break, it is characterised in that including：Cut-off control circuit, Decision circuit and LED indicating circuit, wherein,The control circuit of cut-offfing includes the first PMOS and the first NMOS tube, and it is defeated that first NMOS tube is connected to external power source Enter between end and first PMOS, for controlling first PMOS, first PMOS and the described of rear are sentenced Certainly circuit and LED indicating circuit are connected in parallel, for the break-make as control LED display circuit and whole charging circuit, wherein, First resistor is connected between the grid of first NMOS tube and drain electrode and is connected to the control delivery outlet of device chip, described the The source electrode of one NMOS tube connects the source electrode of first PMOS, and the drain electrode of first NMOS tube connects first PMOS Grid,The decision circuit includes first comparator, the positive pole termination charge power supply of the first comparator, negative pole end ground connection, bears Reference voltage is obtained from charge power supply by divider resistance to input, positive input connects battery, the first comparator Output end output decision signal, wherein, when the voltage of the cell input terminal be higher than the reference voltage, it is described judgement believe Number it is high level, when the voltage of the input of the battery is less than the reference voltage, the decision signal is low level；The LED indicating circuit includes：Second NMOS tube, the 3rd NMOS tube and the first LED, the second LED, wherein, it is described Second NMOS tube is connected in series with first LED, and the 3rd NMOS tube is connected in parallel with second LED, described The output end of the grid of second NMOS tube and the grid of the 3rd NMOS tube respectively with the first comparator of the decision circuit is connected, Lighting and closing for first LED and the second LED is controlled with the decision signal exported according to the decision circuitry, its In, when the decision signal is high level, first LED is lighted, and second LED is closed；When the judgement letter When number being low level, first LED is closed, and second LED is lighted.
- The device 2. multi-platform hardware dynamic charging instruction as claimed in claim 1 and charging lock break, it is characterised in that described the One LED is different with the second LED display color.
- The device 3. multi-platform hardware dynamic charging instruction as claimed in claim 1 and charging lock break, it is characterised in that also wrap Include：Second comparator, wherein, the positive pole termination charge power supply of second comparator, negative pole end is grounded, and negative input passes through Divider resistance obtains reference voltage from charge power supply, and positive input meets battery, the output termination institute of second comparator The grid of the 3rd NMOS tube is stated, the output of the first comparator terminates the grid of second NMOS tube, wherein, described first Comparator exports the first reference voltage, and second comparator exports the second reference voltage, and first reference voltage is less than institute State the second reference voltage.
- The device 4. multi-platform hardware dynamic charging instruction as claimed in claim 3 and charging lock break, it is characterised in thatWhen the voltage of the cell input terminal is between first reference voltage and the second reference voltage, described first LED is lighted, and the second LED is lighted, and shows colour mixture；When the voltage of the cell input terminal is located at below first reference voltage, first LED is closed, and second LED is lighted；When the voltage of the cell input terminal is located at more than second reference voltage, first LED is lighted, and second LED is closed.
- The device 5. multi-platform hardware dynamic charging instruction as claimed in claim 1 and charging lock break, it is characterised in that also wrap Include：Second comparator, the 3rd LED, the second PMOS and the 4th NMOS tube, wherein, the positive pole termination of second comparator Charge power supply, negative pole end ground connection, negative input obtain reference voltage, positive input by divider resistance from charge power supply Battery is connect, the output of second comparator terminates the grid of second NMOS tube, the output termination of the first comparator The grid of 3rd NMOS tube,3rd LED, the second PMOS and the 4th NMOS tube are sequentially connected, wherein, a termination electricity of the 3rd LED Source, the source electrode of another termination second PMOS, the drain electrode of second PMOS meet the drain electrode of the 4th NMOS tube, institute State the source ground of the 4th NMOS tube, the grid of second PMOS connects the grid of second NMOS tube, and the described 4th The grid of NMOS tube connects power supply, wherein, the first comparator exports the first reference voltage, the second comparator output second Reference voltage, first reference voltage are less than second reference voltage.
- The device 6. multi-platform hardware dynamic charging instruction as claimed in claim 5 and charging lock break, it is characterised in thatWhen the voltage of the cell input terminal is between first reference voltage and the second reference voltage, the described 3rd LED is lighted；When the voltage of the cell input terminal is located at below first reference voltage, first LED and the 3rd LED Close, the second LED is lighted；When the voltage of the cell input terminal is located at more than second reference voltage, first LED is lighted, and second LED and the 3rd LED are closed.
- The device 7. multi-platform hardware dynamic charging instruction as claimed in claim 6 and charging lock break, it is characterised in that described the One LED is green light, and second LED is red colored lamp, and the 3rd LED is amber light.
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| CN201710884895.3A CN107733004B (en) | 2017-09-26 | 2017-09-26 | Multi-platform hardware dynamic charging indication and charging gate breaking device |
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| CN201710884895.3A CN107733004B (en) | 2017-09-26 | 2017-09-26 | Multi-platform hardware dynamic charging indication and charging gate breaking device |
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| CN107733004B CN107733004B (en) | 2023-12-19 |
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| CN107733004B (en) | 2023-12-19 |
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