CN106026300B - Compatible battery charge protection, channel switch and the control circuit of linear power supply management - Google Patents
Compatible battery charge protection, channel switch and the control circuit of linear power supply management Download PDFInfo
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- CN106026300B CN106026300B CN201610596608.4A CN201610596608A CN106026300B CN 106026300 B CN106026300 B CN 106026300B CN 201610596608 A CN201610596608 A CN 201610596608A CN 106026300 B CN106026300 B CN 106026300B
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- 230000004224 protection Effects 0.000 title claims abstract description 51
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 66
- 239000004065 semiconductor Substances 0.000 claims description 28
- 230000005611 electricity Effects 0.000 claims description 23
- 230000000087 stabilizing effect Effects 0.000 claims description 22
- 108010037490 Peptidyl-Prolyl Cis-Trans Isomerase NIMA-Interacting 4 Proteins 0.000 claims description 9
- 102100031653 Peptidyl-prolyl cis-trans isomerase NIMA-interacting 4 Human genes 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
Classifications
-
- 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
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of compatible battery charge protections, channel switches and the control circuit of linear power supply management, including controller, lithium battery charge protection unit, multi way temperature sensor switch unit and multi-channel linear power supply management control unit, lithium battery charge protection unit includes first switch pipe, 4th triode, second resistance, 7th resistance and lithium battery charging chip, the base stage of 4th triode is connect by the 7th resistance with controller, first pin of one end and first switch pipe of collector and second resistance connects, the other end of second resistance is connect with the third pin of voltage input end and first switch pipe, the second pin of first switch pipe is connect with a pin of lithium battery charging chip, the anode of another pin connection lithium battery of lithium battery charging chip.The present invention can realize the fully charged rear safe shutdown of lithium battery, the safety for improving lithium battery charging and controllability, the occupancy quantity for the I/O mouths for reducing controller, the controllability and stability for improving linear power supply.
Description
Technical field
The present invention relates to control circuit field, more particularly to a kind of compatible battery charge protection, channel switching and linear electricity
The control circuit of source control.
Background technology
The features such as traditional lithium battery charging circuit is widely used, and has circuit structure simple, and peripheral components are few, but filling
If not pulling out power supply adaptor in electric process, even if battery, which is full of, is also at trickle charge state not deenergization, thus
There are insecurity.In addition conventional power source managing chip cost is higher, circuit flexibility is low, controllability is low and ripple is larger,
And conventional temperature sensor is directly connected to controller, in the feelings that temperature sensor quantity is more or the I/O mouths of controller are less
It just will appear I/O mouthfuls of not enough situations under condition.
Invention content
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, providing a kind of can realize lithium electricity
Pond it is fully charged after safe shutdown, improve lithium battery charging safety and controllability, reduce controller I/O mouths occupancy number
Amount, the compatible battery charge protection of the controllability for improving linear power supply and stability, channel switches and the control of linear power supply management
Circuit processed.
The technical solution adopted by the present invention to solve the technical problems is：Construct a kind of compatible battery charge protection, channel
The control circuit of switching and linear power supply management, including the switching of controller, lithium battery charge protection unit, multi way temperature sensor
Unit and multi-channel linear power supply management control unit, the lithium battery charge protection unit and multi way temperature sensor switch unit
It is connect with the multi-channel linear power supply management control unit, the lithium battery charge protection unit includes first switch pipe,
The base stage of four triodes, second resistance, the 7th resistance and lithium battery charging chip, the 4th triode passes through the 7th electricity
Resistance is connect with the controller, and the emitter of the 4th triode is grounded, the collector of the 4th triode respectively with institute
The one end for stating second resistance is connected with the first pin of first switch pipe, the other end of the second resistance respectively with control source
End is connected with the third pin of first switch pipe, the second pin of the first switch pipe and the one of the lithium battery charging chip
Pin connects, the anode of another pin connection lithium battery of the lithium battery charging chip.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, institute
It is the first metal-oxide-semiconductor to state first switch pipe, and the first pin of the first switch pipe is the grid of first metal-oxide-semiconductor, described the
The second pin of one switching tube is the drain electrode of first metal-oxide-semiconductor, and the third pin of the first switch pipe is the first MOS
The source electrode of pipe.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, institute
It further includes PIN4 interfaces, fuse, first resistor, 3rd resistor, the first capacitance and the second electricity to state lithium battery charge protection unit
Holding, the first pin and second pin of the PIN4 interfaces connect with one end of the fuse, and the of the PIN4 interfaces
Three pins and the 4th pin ground connection, first capacitance and the second capacitance are in parallel, one end in parallel as the voltage input end,
Other end ground connection in parallel, the other end of the fuse are connect with one end of the first resistor and voltage input end respectively,
The other end of the first resistor is connect with one end of the 3rd resistor and controller respectively, the other end of the 3rd resistor
Ground connection.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, institute
It further includes the 6th resistance to state lithium battery charge protection unit, and the 5th pin of the lithium battery charging chip passes through the 6th electricity
Resistance ground connection.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, institute
It includes multi channel selecting chip, the 30th capacitance, the 25th resistance and the 26th electricity to state multi way temperature sensor switch unit
Resistance, the 9th pin and the tenth pin of the multi channel selecting chip are connect with the controller, the multi channel selecting chip
Third pin and the 13rd pin are connect with the controller, and the 13rd pin of the multi channel selecting chip is also by described
25th resistance connects power supply, and the third pin of the multi channel selecting chip is also connected by the 26th resistance
The power supply, the 6th pin, the 7th pin and the 8th pin of the multi channel selecting chip are grounded, the 30th electricity
One end of appearance is grounded, and the other end of the 30th capacitance is electric with the 16th pin of the multi channel selecting chip and power supply respectively
Source connects.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, institute
It further includes the 37th resistance and the 38th resistance to state multi way temperature sensor switch unit, and the of the multi channel selecting chip
11 pins pass through the 38th electricity by the 37th resistance eutral grounding, the 4th pin of the multi channel selecting chip
Resistance ground connection.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, when
When the 9th pin and the tenth pin of the multi channel selecting chip are low level, the 12nd of the multi channel selecting chip is gated
Pin is to the first pin of the 13rd pin and the multi channel selecting chip to third pin；When the multi channel selecting chip
The 9th pin be low level, when the tenth pin is high level, gate the 14th pin of the multi channel selecting chip to the tenth
5th pin of three pins and the multi channel selecting chip is to third pin；When the 9th pin of the multi channel selecting chip
The 15th pin of the multi channel selecting chip is gated to the 13rd pin when the tenth pin is low level for high level, and
The second pin of the multi channel selecting chip is to third pin；When the 9th pin of the multi channel selecting chip and the tenth pin are equal
For high level when, gate the 11st pin to the 13rd pin of the multi channel selecting chip and the multi channel selecting chip
The 4th pin to third pin.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, institute
It includes power control circuit, first group of power supply, second group of power supply and third group power supply to state multi-channel linear power supply management control unit,
The power control circuit includes the 6th metal-oxide-semiconductor, the 7th triode, eleventh resistor, thirteenth resistor and the 14th resistance, institute
The base stage for stating the 7th triode is connect by the thirteenth resistor with the controller, and the base stage of the 7th triode is also logical
Cross the 14th resistance eutral grounding, the emitter ground connection of the 7th triode, the collector of the 7th triode respectively with
One end of the eleventh resistor is connected with the grid of the 6th metal-oxide-semiconductor, and the source electrode of the 6th metal-oxide-semiconductor is respectively with the described 11st
The anode connection of the other end and lithium battery of resistance, first group of power supply are connect with the anode of the lithium battery, and the described 6th
The drain electrode of metal-oxide-semiconductor is connect with second group of power supply and third group power supply respectively, and first group of power supply is normally opened power supply, is provided
3V power supplys, second group of power supply provide 3V power supplys, and the third group power supply provides 1.8V power supplys.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, institute
It includes third linear DC voltage-stabilizing chip, the 9th capacitance, the tenth capacitance and the 11st capacitance, the third line to state first group of power supply
Property DC voltage-stabilizing chip second pin connect respectively with the anode of one end of the 9th capacitance and lithium battery, the third line
Property the first pin of DC voltage-stabilizing chip and the other end ground connection of the 9th capacitance, the tenth capacitance and the 11st capacitance it is in parallel,
Its one end in parallel is connect with the third pin of the third linear DC voltage-stabilizing chip, the other end in parallel ground connection.
In the control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management, institute
It includes the 5th linear DC voltage stabilizing chip, the 15th capacitance, the 19th capacitance and the 20th capacitance to state second group of power supply, and described the
The second pin of five linear DC voltage stabilizing chips is connect with the drain electrode of one end and the 6th metal-oxide-semiconductor of the 19th capacitance respectively,
The other end of first pin of the 5th linear DC voltage stabilizing chip and the 19th capacitance ground connection, the 15th capacitance and the
20 capacitances are in parallel, and one end in parallel is connect with the third pin of the 5th linear DC voltage stabilizing chip, and in parallel is another
End ground connection；The third group power supply includes the 6th linear DC voltage stabilizing chip, the 24th capacitance, the 25th capacitance and second
17 capacitances, the second pin of the 6th linear DC voltage stabilizing chip one end and the 6th with the 25th capacitance respectively
The drain electrode of metal-oxide-semiconductor connects, the first pin of the 6th linear DC voltage stabilizing chip and the other end ground connection of the 25th capacitance,
24th capacitance and the 27th capacitance are in parallel, and the of one end in parallel and the 6th linear DC voltage stabilizing chip
Three pins connect, the other end in parallel ground connection.
Implement the present invention compatible battery charge protection, channel switching and linear power supply management control circuit, have with
Lower advantageous effect：Due to being equipped with controller, lithium battery charge protection unit, multi way temperature sensor switch unit and multi-channel linear
Power supply management control unit can play a protective role to the charging of lithium battery by lithium battery charge protection unit, by more
The I/O mouths that road temperature sensor switch unit can effectively reduce controller occupy quantity, pass through multi-channel linear power management control
Unit processed can improve the controllability of linear stabilized power supply；So it can realize the fully charged rear safe shutdown of lithium battery, improve lithium
Battery charging safety and controllability, reduce controller I/O mouths occupancys quantity, raising linear power supply controllability and surely
It is qualitative.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is one implementation of control circuit of compatible battery charge protection of the present invention, channel switching and linear power supply management
The circuit diagram of lithium battery charge protection unit in example；
Fig. 2 is the circuit diagram of multi way temperature sensor switch unit in the embodiment；
Fig. 3 is the circuit diagram of multi-channel linear power supply management control unit in the embodiment.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It, should in the control circuit embodiment of compatible battery charge protection of the present invention, channel switching and linear power supply management
The control circuit of compatible battery charge protection, channel switching and linear power supply management includes controller, lithium battery charge protection list
Member, multi way temperature sensor switch unit and multi-channel linear power supply management control unit, lithium battery charge protection unit and multichannel
Temperature sensor switch unit is connect with multi-channel linear power supply management control unit.Wherein, lithium battery charge protection unit
Circuit diagram is as shown in Figure 1.
In Fig. 1, which includes first switch pipe Q1, the 4th triode Q4, second resistance R2,
Seven resistance R7 and lithium battery charging chip U1, wherein the base stage of the 4th triode Q4 is (specific by the 7th resistance R7 and controller
The P0.14 pins of controller) connection, the emitter ground connection of the 4th triode Q4, the collector of the 4th triode Q4 respectively with
One end of second resistance R2 is connected with the first pin of first switch pipe Q1, the other end of second resistance R2 respectively with control source
End VIN is connected with the third pin of first switch pipe Q1, and the second pin of first switch pipe Q1 is with lithium battery charging chip U1's
One pin (being specifically the 4th pin) connection, another pin (being specifically third pin) connection lithium electricity of lithium battery charging chip U1
The positive BT+ in pond.
Specifically, the 4th triode Q4, second resistance R2 and the 7th resistance R7 constitute charge protector prime driving electricity
Road, first switch pipe Q1 are configured to rear class control circuit.7th resistance R7 is current-limiting resistance, the collector of the 4th triode Q4
Output is used for driving first switch pipe Q1.When detecting that the electricity of lithium battery is low, controller is by the base stage of the 4th triode Q4
It is set to high level, at this time the 4th triode Q4 conductings, the collector output low level of the 4th triode Q4 drives first switch pipe
Q1 is connected, and charges for lithium battery；When detecting that the electricity of lithium battery fills with, controller sets the base stage of the 4th triode Q4
For low level, the 4th triode Q4 cut-offs, the collector of the 4th triode Q4 export high level at this time, at this time first switch pipe Q1
Cut-off stops charging for lithium battery, plays the role of protecting lithium battery.
It the present invention is especially suitable in the equipment of 5V/2A adapters power supply, that is, is added in lithium battery charging circuit, to lithium electricity
Pond charge protection plays remarkable result.The I/O mouths that controller can be effectively reduced by multi way temperature sensor switch unit account for
With quantity, the controllability of linear stabilized power supply can be improved by multi-channel linear power supply management control unit；So it can be realized
Lithium battery it is fully charged after safe shutdown, improve lithium battery charging safety and controllability, reduce controller I/O mouths occupancy
Quantity, the controllability and stability for improving linear power supply.
In the present embodiment, first switch pipe Q1 is the first metal-oxide-semiconductor, and the first pin of first switch pipe Q1 is the first metal-oxide-semiconductor
Grid, the second pin of first switch pipe Q1 is the drain electrode of the first metal-oxide-semiconductor, and the third pin of first switch pipe Q1 is first
The source electrode of metal-oxide-semiconductor.
In the present embodiment, the lithium battery charge protection unit further include PIN4 interfaces J1, fuse F1, first resistor R1,
The first pin and second pin of 3rd resistor R3, the first capacitance C1 and the second capacitance C2, PIN4 interface J1 with fuse F1
One end connection, the third pin of PIN4 interfaces J1 and the 4th pin ground connection, the first capacitance C1 and the second capacitance C2 are in parallel, in parallel
One end as voltage input end VIN, the other end in parallel ground connection, the other end of fuse F1 respectively with first resistor R1 one
End is connected with voltage input end VIN, and the other end of first resistor R1 (is specifically respectively with one end of 3rd resistor R3 and controller
The P0.20 pins of controller) connection, the other end ground connection of 3rd resistor R3.
In the present embodiment, which further includes the 6th resistance R6, and the of lithium battery charging chip U1
Five pins pass through the 6th resistance R6 ground connection.The charging current that 210mA is provided is ensured that in this way.
Fig. 2 is the circuit diagram of multi way temperature sensor switch unit in the present embodiment.In Fig. 2, which passes
Sensor switch unit includes multi channel selecting chip U7, the 30th capacitance C30, the 25th resistance R25 and the 26th resistance
R26, multi channel selecting chip U7, the 30th capacitance C30, the 25th resistance R25 and the 26th resistance R26 constitute binary channels four
A switch is selected, the 30th capacitance C30 is filter capacitor, and the 25th resistance R25 and the 26th resistance R26 are output pull-up electricity
Resistance gates one of which when circuit works by the 9th pin and the tenth pin of multi channel selecting chip U7.
In the present embodiment, the 9th pin and the tenth pin of multi channel selecting chip U7 are connect with controller, particularly as being
The 9th pin of multi channel selecting chip U7 and the P0.28 pins of controller connect, the tenth pin and the control of multi channel selecting chip U7
The P0.29 pins of device processed connect.The third pin and the 13rd pin of multi channel selecting chip U7 is connect with controller, particularly as
It is that the third pin of multi channel selecting chip U7 and the P0.26 pins of controller connect, the 13rd pin of multi channel selecting chip U7
It is connect with the P0.27 pins of controller.The 13rd pin of multi channel selecting chip U7 is also supplied by the 25th resistance R25 connections
The third pin of power supply VCC3, multi channel selecting chip U7 also pass through the 26th resistance R26 connection power supply VCC3, multichannel
The 6th pin, the 7th pin and the 8th pin of gating chip U7 is grounded, one end ground connection of the 30th capacitance C30, and the 30th
The other end of capacitance C30 is connect with the 16th pin of multi channel selecting chip U7 and power supply VCC3 respectively.
In the present embodiment, when the 9th pin of multi channel selecting chip U7 and the tenth pin are low level, multichannel is gated
The 12nd pin of chip U7 is gated to the first pin of the 13rd pin and multi channel selecting chip U7 to third pin；When
The 9th pin of multi channel selecting chip U7 is low level, when the tenth pin is high level, the tenth of gating multi channel selecting chip U7 the
Four pins are to the 5th pin of the 13rd pin and multi channel selecting chip U7 to third pin；When multi channel selecting chip U7's
9th pin is high level, and when the tenth pin is low level, the 15th pin of gating multi channel selecting chip U7 draws to the 13rd
The second pin of foot and multi channel selecting chip U7 are to third pin；When the 9th pin and the tenth of multi channel selecting chip U7 draws
When foot is high level, the 11st pin to the 13rd pin and multi channel selecting chip U7 of gating multi channel selecting chip U7
The 4th pin to third pin.
In the present embodiment, the 6th pin of multi channel selecting chip U7 is enabled pin, is grounded as normal enabled state；Multichannel is selected
The 16th pin of obturator piece U7 is positive electricity source pin, connects 3V power supplys；The 7th pin of multi channel selecting chip U7 is negative supply, the
Eight pins are grounding pin, are herein single supply power supply station to be all grounded.
In the present embodiment, which further includes the electricity of the 37th resistance R37 and the 38th
R38 is hindered, the 11st pin of multi channel selecting chip U7 is grounded by the 37th resistance R37, and the 4th of multi channel selecting chip U7 the
Pin passes through the 38th resistance R38 ground connection.A kind of multi channel selecting of the multi way temperature sensor switch unit as I2C buses
Scheme, input can be respectively connected to the identical I2C devices in 4 addresses, such as：The 12nd pin and first of multi channel selecting chip U7
Pin, the 14th pin and the 5th pin, the 15th pin and second pin, the 11st pin and the 4th pin.Output is the
13 pins and third pin.The I/O mouths that the multi way temperature sensor switch unit effectively reduces controller occupy quantity.It should
Multi way temperature sensor switch unit is less but need to connect on the controller of multiple temperature sensors especially suitable for I/O mouthfuls,
I.e. in the external device circuitry of controller, to the I/O mouth quantity of I/O mouthfuls of driving capability and saving controller of lifting controller
To remarkable result.
Fig. 3 is the circuit diagram of multi-channel linear power supply management control unit in the present embodiment.In Fig. 3, the 6th metal-oxide-semiconductor
Q6, the 7th triode Q7, eleventh resistor R11, thirteenth resistor R13 and the 14th resistance R14 constitute power control circuit, the
Three linear DC voltage stabilizing chip U3, the 9th capacitance C9, the tenth capacitance C10 and the 11st capacitance C11 first group of power supply of composition, the 5th
Linear DC voltage stabilizing chip U5, the 15th capacitance C15, the 19th capacitance C19 and the 20th capacitance C20 constitute second group of power supply,
Third group power supply includes the 6th linear DC voltage stabilizing chip U6, the 24th capacitance C24, the 25th capacitance and the 27th electricity
Hold C27 and constitute third group power supply, which includes power control circuit, first group of power supply, second
Group power supply and third group power supply.
For power control circuit, the 7th triode Q7 and eleventh resistor R11 composition prime driving circuits, the tenth
Three resistance R13 are the base stage current-limiting resistances of the 7th triode Q7, and the 14th resistance R14 is pull down resistor, after the 6th metal-oxide-semiconductor Q6 is
Stage drive circuit.By thirteenth resistor R13, (P0.07 of specifically controller draws the base stage of 7th triode Q7 with controller
Foot) connection, also by the 14th resistance R14 ground connection, the emitter of the 7th triode Q7 is grounded the base stage of the 7th triode Q7, the
The collector of seven triode Q7 is connect with the grid of one end of eleventh resistor R11 and the 6th metal-oxide-semiconductor Q6 respectively, the 6th metal-oxide-semiconductor
The source electrode of Q6 is connect with the positive BT+ of the other end of eleventh resistor R11 and lithium battery respectively, first group of power supply and lithium battery
Positive BT+ connections, the drain electrode of the 6th metal-oxide-semiconductor Q6 are connect with second group of power supply and third group power supply respectively, and first group of power supply is normal
Switch power supply provides 3V power supplys, and second group of power supply provides 3V power supplys, and third group power supply provides 1.8V power supplys.
In real work, first group of power supply is normally opened power supply, is not controlled by power control circuit, second group of power supply and the
Three groups of power supplys are controlled by power control circuit simultaneously, when system enters low power consumpting state, second group of power supply and third group electricity
Source can all be closed by power control circuit.Due to first group of power supply fluctuate at work it is larger, second group of power supply is independent
Out also it is effectively reduced influence of the power supply to entire circuit.
For first group of power supply, the second pin of third linear DC voltage-stabilizing chip U3 is respectively with the 9th capacitance C9's
One end is connected with the positive BT+ of lithium battery, and the first pin of third linear DC voltage-stabilizing chip U3 and the 9th capacitance C9's is another
End ground connection, the tenth capacitance C10 and the 11st capacitance C11 are in parallel, and one end in parallel is with third linear DC voltage-stabilizing chip U3's
Third pin connects, the other end in parallel ground connection.
For second group of power supply, the second pin of the 5th linear DC voltage stabilizing chip U5 respectively with the 19th capacitance
One end of C19 is connected with the drain electrode of the 6th metal-oxide-semiconductor Q6, the first pin and the 19th capacitance of the 5th linear DC voltage stabilizing chip U5
The other end of C19 is grounded, and the 15th capacitance C15 and the 20th capacitance C20 are in parallel, and one end and the 5th linear DC in parallel is steady
Press the third pin connection of chip U5, the other end in parallel ground connection.
For third group power supply, the second pin of the 6th linear DC voltage stabilizing chip U6 respectively with the 25th capacitance
One end of C25 is connected with the drain electrode of the 6th metal-oxide-semiconductor Q6, the first pin of the 6th linear DC voltage stabilizing chip U6 and the 25th electricity
Hold the other end ground connection of C25, the 24th capacitance C24 and the 27th capacitance C27 are in parallel, and one end of parallel connection is linear with the 6th
The third pin of DC voltage-stabilizing chip U6 connects, the other end in parallel ground connection.The multi-channel linear power supply management control unit is special
It is applicable to provide different voltages and in the mobile device of voltage ripple and stand-by power consumption requirement harshness, to power supply ripple
Inhibit and reduction device standby power consumption plays remarkable result.
In short, compared with prior art, the present invention safety and the controllability of lithium battery charging, guarantee lithium can be effectively improved
Battery safely disconnects after fully charged with power supply adaptor；The controllability that linear stabilized power supply can be effectively improved effectively reduces each
Crosstalk between a power supply；Temperature sensor can be effectively reduced to the occupancy of I/O mouthfuls of controller or be effectively increased I/O mouthfuls of connection temperature
The quantity of sensor is spent, and I/O mouthfuls of driving capability can be effectively improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. the control circuit of a kind of compatible battery charge protection, channel switching and linear power supply management, which is characterized in that including control
Device, lithium battery charge protection unit, multi way temperature sensor switch unit and multi-channel linear power supply management control unit processed, it is described
Lithium battery charge protection unit and multi way temperature sensor switch unit connect with the multi-channel linear power supply management control unit
It connects, the lithium battery charge protection unit includes first switch pipe, the 4th triode, second resistance, the 7th resistance and lithium battery
The base stage of charging chip, the 4th triode is connect by the 7th resistance with the controller, the 4th triode
Emitter ground connection, the collector of the 4th triode respectively with one end of the second resistance and first switch pipe first
Pin connects, and the other end of the second resistance is connect with the third pin of voltage input end and first switch pipe respectively, described
The second pin of first switch pipe is connect with a pin of the lithium battery charging chip, the lithium battery charging chip it is another
Pin connects the anode of lithium battery.
2. the control circuit of compatible battery charge protection according to claim 1, channel switching and linear power supply management,
It is characterized in that, the first switch pipe is the first metal-oxide-semiconductor, and the first pin of the first switch pipe is first metal-oxide-semiconductor
Grid, the second pin of the first switch pipe are the drain electrode of first metal-oxide-semiconductor, and the third pin of the first switch pipe is
The source electrode of first metal-oxide-semiconductor.
3. the control circuit of compatible battery charge protection according to claim 2, channel switching and linear power supply management,
It is characterized in that, the lithium battery charge protection unit further includes PIN4 interfaces, fuse, first resistor, 3rd resistor, the first electricity
Appearance and the second capacitance, the first pin and second pin of the PIN4 interfaces are connect with one end of the fuse, described
The third pin of PIN4 interfaces and the 4th pin ground connection, first capacitance and the second capacitance are in parallel, and one end in parallel is as institute
State voltage input end, the other end in parallel ground connection, the other end of the fuse respectively with one end of the first resistor and electricity
Input terminal connection is pressed, the other end of the first resistor connect with one end of the 3rd resistor and controller respectively, and described the
The other end of three resistance is grounded.
4. the control circuit of compatible battery charge protection according to claim 3, channel switching and linear power supply management,
It is characterized in that, the lithium battery charge protection unit further includes the 6th resistance, and the 5th pin of the lithium battery charging chip is logical
Cross the 6th resistance eutral grounding.
5. compatible battery charge protection according to any one of claims 1 to 4, channel switching and linear power supply management
Control circuit, which is characterized in that the multi way temperature sensor switch unit includes multi channel selecting chip, the 30th capacitance,
25 resistance and the 26th resistance, the 9th pin and the tenth pin of the multi channel selecting chip connect with the controller
It connects, the third pin and the 13rd pin of the multi channel selecting chip are connect with the controller, the multi channel selecting chip
The 13rd pin power supply is also connected by the 25th resistance, the third pin of the multi channel selecting chip is also logical
It crosses the 26th resistance and connects the power supply, the 6th pin, the 7th pin and the 8th of the multi channel selecting chip
Pin is grounded, one end of the 30th capacitance ground connection, the other end of the 30th capacitance respectively with the multi channel selecting
16th pin of chip is connected with power supply.
6. the control circuit of compatible battery charge protection according to claim 5, channel switching and linear power supply management,
It is characterized in that, the multi way temperature sensor switch unit further includes the 37th resistance and the 38th resistance, the multichannel
The 11st pin of chip is gated by the 37th resistance eutral grounding, the 4th pin of the multi channel selecting chip passes through institute
State the 38th resistance eutral grounding.
7. the control circuit of compatible battery charge protection according to claim 6, channel switching and linear power supply management,
It is characterized in that, when the 9th pin of the multi channel selecting chip and the tenth pin are low level, gates the multi channel selecting
12nd pin of chip is to the first pin of the 13rd pin and the multi channel selecting chip to third pin；When described
9th pin of multi channel selecting chip is that low level gates the tenth of the multi channel selecting chip when the tenth pin is high level
Four pins are to the 5th pin of the 13rd pin and the multi channel selecting chip to third pin；When the multi channel selecting core
9th pin of piece is high level, when the tenth pin is low level, gates the 15th pin of the multi channel selecting chip to the
The second pin of 13 pins and the multi channel selecting chip is to third pin；The 9th when the multi channel selecting chip draws
When foot and the tenth pin are high level, the 11st pin to the 13rd pin of the multi channel selecting chip, Yi Jisuo are gated
The 4th pin of multi channel selecting chip is stated to third pin.
8. compatible battery charge protection according to any one of claims 1 to 4, channel switching and linear power supply management
Control circuit, which is characterized in that the multi-channel linear power supply management control unit include power control circuit, first group of power supply,
Second group of power supply and third group power supply, the power control circuit include the 6th metal-oxide-semiconductor, the 7th triode, eleventh resistor, the
The base stage of 13 resistance and the 14th resistance, the 7th triode is connect by the thirteenth resistor with the controller,
Also by the 14th resistance eutral grounding, the emitter of the 7th triode is grounded the base stage of 7th triode, described
The collector of 7th triode is connect with the grid of one end of the eleventh resistor and the 6th metal-oxide-semiconductor respectively, the 6th MOS
The source electrode of pipe is connect with the anode of the other end of the eleventh resistor and lithium battery respectively, first group of power supply and the lithium
The anode connection of battery, the drain electrode of the 6th metal-oxide-semiconductor connect with second group of power supply and third group power supply respectively, and described the
One group of power supply is normally opened power supply, provides 3V power supplys, and second group of power supply provides 3V power supplys, and the third group power supply provides 1.8V
Power supply.
9. the control circuit of compatible battery charge protection according to claim 8, channel switching and linear power supply management,
It is characterized in that, first group of power supply includes third linear DC voltage-stabilizing chip, the 9th capacitance, the tenth capacitance and the 11st electricity
Hold, the second pin of the third linear DC voltage-stabilizing chip connects with one end of the 9th capacitance and the positive of lithium battery respectively
It connects, the other end ground connection of the first pin of the third linear DC voltage-stabilizing chip and the 9th capacitance, the tenth capacitance and the
11 capacitances are in parallel, and one end in parallel is connect with the third pin of the third linear DC voltage-stabilizing chip, and in parallel is another
End ground connection.
10. the control circuit of compatible battery charge protection according to claim 8, channel switching and linear power supply management,
It is characterized in that, second group of power supply includes the 5th linear DC voltage stabilizing chip, the 15th capacitance, the 19th capacitance and second
Ten capacitances, the second pin of the 5th linear DC voltage stabilizing chip respectively with one end of the 19th capacitance and the 6th MOS
The drain electrode of pipe connects, the first pin of the 5th linear DC voltage stabilizing chip and the other end ground connection of the 19th capacitance, described
15th capacitance and the 20th capacitance are in parallel, and one end in parallel and the third pin of the 5th linear DC voltage stabilizing chip connect
It connects, the other end in parallel ground connection；The third group power supply includes the 6th linear DC voltage stabilizing chip, the 24th capacitance, second
The second pin of 15 capacitances and the 27th capacitance, the 6th linear DC voltage stabilizing chip is electric with the described 25th respectively
One end of appearance is connected with the drain electrode of the 6th metal-oxide-semiconductor, the first pin of the 6th linear DC voltage stabilizing chip and the 25th electricity
The other end of appearance is grounded, and the 24th capacitance and the 27th capacitance are in parallel, and one end in parallel and the described 6th is linearly
The third pin of DC voltage-stabilizing chip connects, the other end in parallel ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596608.4A CN106026300B (en) | 2016-07-26 | 2016-07-26 | Compatible battery charge protection, channel switch and the control circuit of linear power supply management |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610596608.4A CN106026300B (en) | 2016-07-26 | 2016-07-26 | Compatible battery charge protection, channel switch and the control circuit of linear power supply management |
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| CN106026300A CN106026300A (en) | 2016-10-12 |
| CN106026300B true CN106026300B (en) | 2018-11-02 |
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| CN106786834B (en) * | 2016-11-16 | 2019-09-03 | 广州视源电子科技股份有限公司 | Control circuit of bluetooth equipment |
| CN108683323A (en) * | 2018-04-24 | 2018-10-19 | 安徽艾可蓝环保股份有限公司 | A kind of low speed paper tape reader static power disspation control circuit |
| CN108933585B (en) * | 2018-07-05 | 2022-12-13 | 添可智能科技有限公司 | Activation circuit and dust collector |
| FR3090888B1 (en) * | 2018-12-19 | 2020-11-27 | Continental Automotive France | Device for automatic detection of coupling between electronic devices |
| CN113031467A (en) * | 2019-12-09 | 2021-06-25 | 中国石油天然气集团有限公司 | Signal acquisition device and system |
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| CN101697410B (en) * | 2009-10-23 | 2011-12-21 | 欣旺达电子股份有限公司 | Short-circuit protection circuit adopted in battery charger circuit |
| CN101800433A (en) * | 2009-10-23 | 2010-08-11 | 欣旺达电子股份有限公司 | Lithium battery overcharge-prevention realization method based on protective chip and realization circuit |
| CN202014113U (en) * | 2011-03-19 | 2011-10-19 | 青岛海信移动通信技术股份有限公司 | Battery charging circuit with function of protection and charger with holder |
| CN202424245U (en) * | 2012-01-09 | 2012-09-05 | 何志雄 | Lithium battery charger |
| CN205051402U (en) * | 2015-10-28 | 2016-02-24 | 邹小辉 | Lithium batteries control circuit |
| CN205882771U (en) * | 2016-07-26 | 2017-01-11 | 深圳市极客宝贝智能科技有限公司 | Control circuit of compatible battery charge protection , Channel switching and linear power supply management |
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