CN209170009U - Power circuit and electronic equipment - Google Patents
Power circuit and electronic equipment Download PDFInfo
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- CN209170009U CN209170009U CN201822268235.5U CN201822268235U CN209170009U CN 209170009 U CN209170009 U CN 209170009U CN 201822268235 U CN201822268235 U CN 201822268235U CN 209170009 U CN209170009 U CN 209170009U
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Abstract
It includes switching circuit and charging circuit that the utility model, which discloses a kind of power circuit and electronic equipment, the power circuit,；Wherein, the input terminal of the input terminal of the switching circuit and adapter connects, and the output end of the switching circuit is connect with the input terminal of the charging circuit；The charging circuit exports cut-off signals after charging circuit conversion for receiving the output voltage of the battery in the battery discharge；The switching circuit, shutdown when for receiving the cut-off signals, the adapter stop powering to the charging circuit.Technical solutions of the utility model can realize charging chip reverse-filling purpose in battery discharge.
Description
Technical field
The utility model relates to charging and discharging technical field, in particular to a kind of power circuit and electronic equipment.
Background technique
There are many charging chips of naive model on the market at present, itself does not have reverse-filling function, can not prevent battery
By flowing back to external power supply inside charging chip or forming leakage path when electric discharge, therefore for low cost simple charging core
Problem above present in piece is badly in need of a solution.
Utility model content
The main purpose of the utility model is to provide a kind of power circuit, it is intended to can realize charging in battery discharge
Chip reverse-filling purpose.
To achieve the above object, the utility model proposes power circuit include switching circuit and charging circuit；Wherein, institute
The input terminal of the input terminal and adapter of stating switching circuit connects, and the output end of the switching circuit is defeated with the charging circuit
Enter end connection；
The charging circuit, for receiving the output voltage of the battery in the battery discharge, through the charging electricity
Cut-off signals are exported after the conversion of road；
The switching circuit, shutdown when for receiving the cut-off signals, the adapter stop to the charging circuit
Power supply.
Preferably, the power circuit further includes enabled circuit；Wherein,
The enabled circuit, the enable signal issued for receiving external enabled systems end are low in the enable signal
When level signal, the connection between the charging circuit and external enabled systems end is disconnected；It is high level in the enable signal
When signal, the connection between the charging circuit and external enabled systems end is connected.
Preferably, the power circuit further includes temperature sensing circuit；Wherein,
The temperature sensing circuit, for detecting battery temperature when charging, when the battery temperature is default not first
When temperature range, it is determined as the first abnormal temperature and first abnormal temperature is fed back into master control system end, the master control system
System end sends high level signal to the external enabled systems end so that the charging circuit is connected according to first abnormal temperature
With the connection between the external enabled systems end；
It is also used to detect battery temperature when electric discharge, when the battery temperature is not at the second preset temperature section, determines
Master control system end is fed back to for the second abnormal temperature and by second abnormal temperature, the master control system end is according to described second
Abnormal temperature issues off signal to disconnect the connection between the battery and discharge load power supply.
Preferably, the charging circuit include controller, first diode, first capacitor, the second capacitor, the first inductance,
7th resistance and second resistance；Wherein,
The anode of the first diode is connect with status system end, the cathode of the first diode and the controller
The connection of state end, the first end of the first capacitor connect with the input terminal of the controller, the second of the first capacitor
It holds and is grounded with the second end of second capacitor, the first end of second capacitor and the charging time of the controller control
End connection, the first end of first inductance are connect with the switching node end of the controller, the second end of first inductance
It is connect with the first end of the 7th resistance, the first end of the 7th resistance also connects with the current-limiting resistance end of the controller
It connects, the second end of the 7th resistance is connect with the battery, the temperature of the first end of the second resistance and the controller
Management end and the enabled circuit are separately connected, the second end of the second resistance and the battery and the temperature sensing circuit
It is separately connected.
Preferably, the switching circuit includes the first metal-oxide-semiconductor and first resistor；Wherein,
The drain electrode of first metal-oxide-semiconductor is connect with the input terminal of the adapter, the grid of first metal-oxide-semiconductor with it is described
The state end of controller connects, and the source electrode of first metal-oxide-semiconductor is connect with the input terminal of the controller, first metal-oxide-semiconductor
Grid also connect with the first end of the first resistor, the source electrode of first metal-oxide-semiconductor also with the first resistor second
End connection.
Preferably, the enabled circuit includes 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance and the one or three pole
Pipe；Wherein,
The first end of the 3rd resistor is connect with the temperature management end of the controller, the second end of the 3rd resistor
And the second end of the 4th resistance is grounded, the first end of the 4th resistance and the first end of the 5th resistance and described
The base stage of first triode is separately connected, and the second end of the 5th resistance is connect with the external enabled systems end, and described the
The emitter of one triode is connect with the second end of the 4th resistance, the collector of first triode and the 6th electricity
The first end of resistance connects, and the first end of the 6th resistance is also connect with the temperature management end of the controller, the 6th electricity
The second end of resistance is connect with the input terminal of the adapter.
Preferably, the temperature sensing circuit includes the 8th resistance, the 9th resistance, the tenth resistance, eleventh resistor and master
Control system power supply；Wherein,
The first end of 8th resistance is connect with the second end of the second resistance, the second end of the 8th resistance with
First end, the first end of the tenth resistance and the first end of the eleventh resistor of 9th resistance are separately connected, institute
The second end for stating the 9th resistance is connect with the input terminal of the master control system power supply, the second end of the tenth resistance and master control system
The connection of system end, the second end ground connection of the eleventh resistor.
Preferably, the power circuit further includes third capacitor, the 4th capacitor, the 5th capacitor and discharge load electricity
Source；Wherein,
The first end difference of the first end of the third capacitor, the first end of the 4th capacitor and the 5th capacitor is all
It is connect with the pressure feedback port of the controller, the second end of the third capacitor, the second end of the 4th capacitor and described
The second end of 5th capacitor is grounded, and the pressure feedback port of the controller is also electric with the battery and the discharge load respectively
The input terminal in source connects.
Preferably, the input terminal of the switching circuit is connect with the input terminal of the adapter, the switching circuit it is defeated
Outlet is connect with the input terminal of the charging circuit, the temperature management end of the charging circuit and the enabled circuit connection, institute
The temperature management end for stating charging circuit is separately connected via the second resistance and the temperature sensing circuit and the battery, institute
The pressure feedback port for stating charging circuit is connect via the discharge load power supply with the battery.
The utility model also proposes a kind of electronic equipment, and the electronic equipment includes the electricity of power supply described in any one as above
Road.
Technical solutions of the utility model form a kind of power circuit by setting switching circuit and charging circuit.Wherein,
The input terminal of the switching circuit and the input terminal of adapter connect, the output end of the switching circuit and the charging circuit
Input terminal connection；The charging circuit is used in the battery discharge, the output voltage of the battery is received, through the charging
Cut-off signals are exported after circuit conversion；The switching circuit stops for shutdown when receiving the cut-off signals, the adapter
It powers to the charging circuit.Technical solutions of the utility model can realize charging chip reverse-filling purpose in battery discharge.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the functional block diagram of one embodiment of the utility model power circuit；
Fig. 2 is the circuit structure diagram of one embodiment of the utility model power circuit.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Charging circuit | M1 | First metal-oxide-semiconductor |
| 110 | Controller | D1 | First diode |
| 111 | Switching circuit | C1~C5 | First capacitor is to the 5th capacitor |
| 200 | Enabled circuit | R1~R11 | First resistor is to eleventh resistor |
| 300 | Temperature sensing circuit | Q1 | First triode |
| 400 | Battery | L1 | First inductance |
| CHG_STAT | Status system end | LX | The switching node end of controller |
| CHG_EN | External enabled systems end | IN | The input terminal of controller |
| ADC_PMU | Master control system end | NTC | The temperature management end of controller |
| VADC_PMU | Master control system power supply | BAT | The pressure feedback port of controller |
| VBUS | Adapter | RS | The current-limiting resistance end of controller |
| VBAT | Discharge load power supply | TIM | The charging time control terminal of controller |
| STAT | The state end of controller |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Occur it is conflicting or when cannot achieve should people think that the combination of this technical solution is not present, also do not wanted in the utility model
Within the protection scope asked.
The utility model proposes a kind of power circuits.
Referring to Fig.1, in the utility model embodiment, which includes switching circuit 111 and charging circuit 100；
Wherein, the input terminal of the switching circuit 111 is connect with the input terminal of adapter VBUS, the output end of the switching circuit 111
It is connect with the input terminal of the charging circuit 110；
The charging circuit 100 is passed through for receiving the output voltage of the battery 400 in the battery 400 electric discharge
The charging circuit 100 exports cut-off signals after converting；
The switching circuit 111, shutdown when for receiving the cut-off signals, the adapter VBUS stop filling to described
Circuit 100 is powered.
It should be noted that the controller 110 used inside the charging circuit 100 is inexpensive letter in the present embodiment
Easy charging chip increases the first metal-oxide-semiconductor M1 due to not having reverse-filling function in the switching circuit 111,
The battery 400 discharges, i.e., when the described charging circuit 100 is full of the battery 400 or the adapter VBUS is not accessed,
The charging circuit 100 receives the voltage exported when the battery 400 electric discharge, through 100 internal controller 110 of charging circuit
Make the state end of the controller 110 that can revert to initial open-drain high-impedance state after conversion, i.e. output cut-off signals, then institute
It states and does not form pressure difference between the grid and source electrode of the first metal-oxide-semiconductor M1 and enable its cut-off, that is, be disconnected between adapter VBUS
Connection, the adapter VBUS stops giving the charging circuit 100 power supply, and electric current when preventing the battery 400 from discharging is logical
It crosses and flows back to adapter VBUS inside the charging circuit 100 and form electric leakage in the external circuit of the first metal-oxide-semiconductor M1.
Further, in this embodiment when the charging circuit 100 charges to the battery 400, the battery
400 be corresponding load, wherein the battery 400 is that rechargeable battery.
Technical solutions of the utility model form a kind of power supply electricity by setting switching circuit 111 and charging circuit 100
Road.Wherein, the input terminal of the switching circuit 111 is connect with the input terminal of adapter VBUS, the output of the switching circuit 111
End is connect with the input terminal of the charging circuit 100；The charging circuit 100 is used to receive institute in the battery 400 electric discharge
The output voltage for stating battery 400 exports cut-off signals after the charging circuit 100 conversion；The switching circuit 111 is for connecing
Shutdown when receiving the cut-off signals, the adapter VBUS stop powering to the charging circuit 100.The utility model technical side
Case can realize charging chip reverse-filling purpose in battery discharge.
Specifically, the power circuit further includes enabled circuit 200；Wherein,
The enabled circuit 200, the enable signal issued for receiving external enabled systems end CHG_EN, described enabled
When signal is low level signal, the connection between the charging circuit 100 and external enabled systems end CHG_EN is disconnected；Described
When enable signal is high level signal, the connection between the charging circuit 100 and external enabled systems end CHG_EN is connected.
It should be noted that it is inexpensive letter that 100 internal controller 110 of charging circuit, which uses, in the present embodiment
Easy charging chip does not have ena-bung function, therefore introduces the enable signal of external enabled systems end CHG_EN sending to drive
The first triode Q1 inside enabled circuit 200 is stated, when the charging circuit 100 charges to the battery 400, works as institute
When stating charging circuit 100 and detecting the voltage other than controlled voltage range, the external enabled systems end CHG_EN is by enabled letter
It number draws high as high level signal, so that the first triode Q1 saturation conduction, that is, the charging circuit 100 is connected to be made with outside
Connection between energy system end CHG_EN, and the temperature management end of the charging circuit 100 is clamped, thus described in triggering
Charging circuit 100 stops working.Therefore in the case of charging normal, the external enabled systems end CHG_EN default will be described enabled
Signal disconnects the charging this ensures that the first triode Q1 normality closes isolation down for low level signal
Connection between circuit 100 and external enabled systems end CHG_EN, so that do not influence the controller 110 powers on use, with
So that the charging circuit 100 is worked normally without being influenced by external signal terminal.
Specifically, the power circuit further includes temperature sensing circuit 300；Wherein,
The temperature sensing circuit 300, for detecting 400 temperature of battery when charging, when 400 temperature of battery does not exist
When the first preset temperature section, it is determined as the first abnormal temperature and first abnormal temperature is fed back into master control system end ADC_
PMU, the master control system end ADC_PMU send high level signal to the external enabled systems according to first abnormal temperature
End is to be connected the connection between the charging circuit 100 and the external enabled systems end CHG_EN；
It is also used to detect 400 temperature of battery when electric discharge, when 400 temperature of battery is not or not the second preset temperature section
When, it is determined as the second abnormal temperature and second abnormal temperature is fed back into master control system end ADC_PMU, the master control system
End ADC_PMU issues off signal according to second abnormal temperature to disconnect the battery 400 and discharge load power supply VBAT
Between connection.
It should be noted that 100 internal controller 110 of charging circuit is using inexpensive letter in the present embodiment
Easy charging chip, and corresponded to when battery applications and have different temperature applicable ranges under charging and discharging state respectively, by institute
Battery temperature coping behavior can not be managed by stating when battery 400 discharges, therefore the temperature sensing circuit 300 is by the battery 400
The simple voltage division processing that included resistance carries out accesses the master control system end ADC_PMU to detect 400 temperature of battery, works as institute
400 temperature of battery is stated not at the first preset temperature section, is determined as the first abnormal temperature and first abnormal temperature is anti-
Master control system of feeding end ADC_PMU, the master control system end ADC_PMU send high level signal according to first abnormal temperature
To the external enabled systems end CHG_EN, to be input to the enabled circuit 200, the charging circuit 100 and institute is connected
The connection between external enabled systems end CHG_EN is stated, so that the charging circuit 100 stops charging to the battery 400；When
400 temperature of battery is determined as the second abnormal temperature and by second abnormal temperature not at the second preset temperature section
Master control system end ADC_PMU is fed back to, the master control system end ADC_PMU issues off signal according to second abnormal temperature
To disconnect the connection between the battery 400 and discharge load power supply VBAT, i.e. execution system closedown movement.
It is worth noting that the battery 400, which when being electrically charged, exists, is electrically charged safely temperature range, in the present embodiment
It is set as first preset temperature section, such as the cell safety in the present embodiment is electrically charged temperature range and arrives for 0 degree Celsius
45 degrees Celsius；There is safety externally discharge temp section in electric discharge in the battery 400, described the is set as in the present embodiment
Two preset temperature sections, such as the external discharge temp section of cell safety in the present embodiment are -10 degrees Celsius to 60 degrees Celsius；
It can be readily appreciated that second preset temperature section includes first preset temperature section, and it is not limited only to the present embodiment
In cited temperature range data, determine with specific reference to the battery size of use, no longer repeat one by one herein.
Specifically, referring to Fig. 2, the charging circuit 100 include controller 110, first diode D1, first capacitor C1,
Second capacitor C2, the first inductance L1, the 7th resistance R7 and second resistance R2；Wherein,
The anode of the first diode D1 is connect with status system end CHG_STAT, the cathode of the first diode D1
It is connect with the state end of the controller 110, the input terminal of the first end of the first capacitor C1 and the controller 110 connects
It connecing, the second end of the first capacitor C1 and the second end of the second capacitor C2 are grounded, and the first of the second capacitor C2
End is connect with the charging time control terminal of the controller 110, first end and the controller 110 of the first inductance L1
The connection of switching node end, the second end of the first inductance L1 are connect with the first end of the 7th resistance R7, the 7th electricity
The first end of resistance R7 is also connect with the current-limiting resistance end of the controller 110, the second end of the 7th resistance R7 and the electricity
Pond 400 connects, the temperature management end and the enabled circuit 200 of the first end of the second resistance R2 and the controller 110
It is separately connected, the second end of the second resistance R2 is separately connected with the battery 400 and the temperature sensing circuit 300.
It should be noted that the effect of the first diode D1 is the isolation status system end in the present embodiment
CHG_STAT, and in the present embodiment, what the first diode D1 was selected is Schottky diode, is guaranteeing the controller
110 state end will not allow the status system end CHG_ while feeding back to the status system end CHG_STAT identification state
STAT interferes with the use condition of the first metal-oxide-semiconductor M1, when the state end of the controller 110 drags down, due to described
The forward conduction low voltage difference characteristic of one diode D1, the status system end CHG_STAT can be clamped, to not influence described
The identification of the state end detection level of controller 110.
Further, in this embodiment the state end of the controller 110 reverts to initially when the battery discharge
Open-drain high-impedance state, then do not form pressure difference between the grid and source electrode of the first metal-oxide-semiconductor M1 and enable its cut-off, prevent institute
It states electric current when battery 400 discharges and flows back to adapter VBUS or by the described 7th by flowing backward inside the controller 110
External circuit of the leakage path in the first metal-oxide-semiconductor M1 after resistance R7 and the first inductance L1 forms electric leakage.
Specifically, the switching circuit 111 includes the first metal-oxide-semiconductor M1, first resistor R1；Wherein, the first metal-oxide-semiconductor M1
Drain electrode connect with the input terminal of the adapter VBUS, the state of the grid of the first metal-oxide-semiconductor M1 and the controller 110
End connection, the source electrode of the first metal-oxide-semiconductor M1 are connect with the input terminal of the controller 110, the grid of the first metal-oxide-semiconductor M1
Also connect with the first end of the first resistor R1, the source electrode of the first metal-oxide-semiconductor M1 also with the first resistor R1 second
End connection.
It should be noted that increasing the first metal-oxide-semiconductor M1 in the present embodiment and forming the switching circuit 111, work as adaptation
When device VBUS is accessed, the body diode for first passing through the first metal-oxide-semiconductor M1 supplies the controller 110, in the controller 110
Work can drag down the state end of the controller 110, when charging normal in behavior so that the grid of the first metal-oxide-semiconductor M1
Pressure difference is formed between pole and source electrode and enables its conducting, guarantees the high current circulation of input power；It discharges in the battery 400,
When the i.e. described charging circuit 100 is full of the battery 400 or the adapter VBUS is not accessed, the charging circuit 100
The voltage exported when the battery 400 electric discharge is received, is made after 100 internal controller 110 of charging circuit conversion described
The state end of controller 110 can revert to initial open-drain high-impedance state, i.e. output cut-off signals, then the first metal-oxide-semiconductor M1
Grid and source electrode between do not form pressure difference and enable its cut-off, that is, the connection being disconnected between adapter VBUS is described suitable
Orchestration VBUS stops powering to the charging circuit 100, and electric current when preventing the battery 400 from discharging passes through the charging circuit
Adapter VBUS is flowed back to inside 100 and forms electric leakage in the external circuit of the first metal-oxide-semiconductor M1.
Specifically, the enabled circuit 200 includes 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6
And the first triode Q1；Wherein,
The first end of the 3rd resistor R3 is connect with the temperature management end of the controller 110, the 3rd resistor R3
Second end and the second end of the 4th resistance R4 be grounded, the first end of the 4th resistance R4 and the 5th resistance R5
First end and the base stage of the first triode Q1 be separately connected, the second end of the 5th resistance R5 and the outside are enabled
The emitter of system end CHG_EN connection, the first triode Q1 is connect with the second end of the 4th resistance R4, and described
The collector of one triode Q1 is connect with the first end of the 6th resistance R6, the first end of the 6th resistance R6 also with it is described
The temperature management end of controller 110 connects, and the second end of the 6th resistance R6 is connect with the input terminal of the adapter VBUS.
It should be noted that carrying out the normal work that charges to the battery 400 in the charging circuit 100 in the present embodiment
When making, the external enabled systems end CHG_EN default drop-down, so that the first triode Q1 is normality off state, so that
The charging circuit 100 is obtained to work normally without being influenced by external signal terminal.
It can be readily appreciated that the external enabled systems end CHG_EN is configured to the movement of high level closing, it is to protect
Main control end is demonstrate,proved when battery capacity cannot be started up, couple in adapter also ensures that charging chip can charge the battery, at this time institute
It states (going additionally to make can control without master control) that external enabled systems end CHG_EN is configured to be pulled down
Specifically, the temperature sensing circuit 300 includes the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the tenth
One resistance R11 and master control system power supply VADC_PMU；Wherein,
The first end of the 8th resistance R8 is connect with the second end of the second resistance R2, and the of the 8th resistance R8
The first of the first end of two ends and the 9th resistance R9, the first end of the tenth resistance R10 and the eleventh resistor R11
End is separately connected, and the second end of the 9th resistance R9 is connect with the input terminal of the master control system power supply VADC_PMU, described
The second end of tenth resistance R10 is connect with master control system end ADC_PMU, the second end ground connection of the eleventh resistor R11.
It should be noted that passing through the 8th resistance R8, the 9th resistance R9, the tenth electricity in the present embodiment
It hinders the R10 and eleventh resistor R11 and bleeder circuit, the electricity that the temperature sensing circuit 300 carries the battery 400 is set
Resistance carries out simple voltage division processing and accesses the master control system end ADC_PMU, identifies corresponding temperature by determining voltage to detect
400 temperature of battery is determined as the first abnormal temperature simultaneously when 400 temperature of battery is not at the first preset temperature section
First abnormal temperature is fed back into master control system end ADC_PMU, the master control system end ADC_PMU is different according to described first
Normal temperature sends high level signal to the external enabled systems end CHG_EN, to be input to the enabled circuit 200, with conducting
Connection between the charging circuit 100 and the external enabled systems end CHG_EN, so that the stopping pair of the charging circuit 100
The battery 400 charges；When 400 temperature of battery is not at the second preset temperature section, it is determined as the second abnormal temperature simultaneously
Second abnormal temperature is fed back into master control system end ADC_PMU, the master control system end ADC_PMU is different according to described second
Normal temperature issues off signal to disconnect the connection between the battery 400 and discharge load power supply VBAT, i.e. execution system is closed
Motor-driven work.
It is worth noting that when using the temperature sensing circuit 300 to detect 400 temperature of battery, it is proposed that addition ' is seen
Door dog ' mode go to evade software crash and the hidden danger that causes temperature detection to fail.
Specifically, the power circuit further includes third capacitor C3, the 4th capacitor C4, the 5th capacitor C5 and discharge load electricity
Source VBAT；Wherein,
First end, the first end of the 4th capacitor C4 and the first end of the 5th capacitor C5 of the third capacitor C3
Difference all connect with the pressure feedback port of the controller 110, the second end of the third capacitor C3, the 4th capacitor C4
Second end and the second end of the 5th capacitor C5 are grounded, the pressure feedback port of the controller 110 also respectively with the electricity
The connection of the input terminal of pond 400 and the discharge load power supply VBAT.
It should be noted that in the present embodiment, the third capacitor C3, the 4th capacitor C4 and the 5th capacitor C5
Filter circuit is formed, the discharge load power supply VBAT can connect corresponding discharge load.
The input terminal of the switching circuit 111 is connect with the input terminal of the adapter VBUS, the switching circuit 111
Output end is connect with the input terminal of the charging circuit 100, the temperature management end of the charging circuit 100 and the enabled circuit
200 connections, the temperature management end of the charging circuit 100 via the second resistance R2 and the temperature sensing circuit 300 and
The battery 400 is separately connected, the pressure feedback port of the charging circuit 100 via the discharge load power supply VBAT with it is described
Battery connection.
The utility model also proposes a kind of electronic equipment, and the electronic equipment includes the electricity of power supply described in any one as above
Road.
The electronic equipment includes above-mentioned power circuit, and the specific structure of the power circuit is referring to above-described embodiment, due to this
Electronic equipment uses whole technical solutions of above-mentioned all embodiments, therefore at least with the technical solution institute of above-described embodiment
All beneficial effects of bring, this is no longer going to repeat them.
The electronic equipment may include the charging chip of low cost simple or can be charger.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (10)
1. a kind of power circuit, which is characterized in that including switching circuit and charging circuit；Wherein, the input of the switching circuit
End is connect with the input terminal of adapter, and the output end of the switching circuit is connect with the input terminal of the charging circuit；
The charging circuit exports after charging circuit conversion for receiving the output voltage of battery in battery discharge
Cut-off signals；
The switching circuit, shutdown when for receiving the cut-off signals, the adapter stop powering to the charging circuit.
2. power circuit as described in claim 1, which is characterized in that the power circuit further includes enabled circuit；Wherein,
The enabled circuit, the enable signal issued for receiving external enabled systems end are low level in the enable signal
When signal, the connection between the charging circuit and external enabled systems end is disconnected；It is high level signal in the enable signal
When, the connection between the charging circuit and external enabled systems end is connected.
3. power circuit as claimed in claim 2, which is characterized in that the power circuit further includes temperature sensing circuit；Its
In,
The temperature sensing circuit, for detecting battery temperature when charging, when the battery temperature is not in the first preset temperature
When section, it is determined as the first abnormal temperature and first abnormal temperature is fed back into master control system end, the master control system end
High level signal is sent to the external enabled systems end according to first abnormal temperature the charging circuit and institute is connected
State the connection between external enabled systems end；
It is also used to detect battery temperature when electric discharge, when the battery temperature is not at the second preset temperature section, is determined as
Second abnormal temperature is simultaneously fed back to master control system end by two abnormal temperatures, and the master control system end is abnormal according to described second
Temperature issues off signal to disconnect the connection between the battery and discharge load power supply.
4. power circuit as claimed in claim 3, which is characterized in that the charging circuit include controller, first diode,
First capacitor, the second capacitor, the first inductance, the 7th resistance and second resistance；Wherein,
The anode of the first diode is connect with status system end, the shape of the cathode of the first diode and the controller
The connection of state end, the first end of the first capacitor connect with the input terminal of the controller, the second end of the first capacitor and
The second end of second capacitor is grounded, and the first end of second capacitor and the charging time control terminal of the controller connect
It connects, the first end of first inductance is connect with the switching node end of the controller, the second end of first inductance and institute
The first end connection of the 7th resistance is stated, the first end of the 7th resistance is also connect with the current-limiting resistance end of the controller, institute
The second end for stating the 7th resistance is connect with the battery, the temperature management end of the first end of the second resistance and the controller
And the enabled circuit is separately connected, the second end of the second resistance connects respectively with the battery and the temperature sensing circuit
It connects.
5. power circuit as claimed in claim 4, which is characterized in that the switching circuit includes the first metal-oxide-semiconductor and the first electricity
Resistance；Wherein,
The drain electrode of first metal-oxide-semiconductor is connect with the input terminal of the adapter, the grid of first metal-oxide-semiconductor and the control
The state end of device connects, and the source electrode of first metal-oxide-semiconductor is connect with the input terminal of the controller, the grid of first metal-oxide-semiconductor
Pole is also connect with the first end of the first resistor, and the source electrode of first metal-oxide-semiconductor also connects with the second end of the first resistor
It connects.
6. power circuit as claimed in claim 5, which is characterized in that the enabled circuit include 3rd resistor, the 4th resistance,
5th resistance, the 6th resistance and the first triode；Wherein,
The first end of the 3rd resistor is connect with the temperature management end of the controller, the second end of the 3rd resistor and institute
The second end for stating the 4th resistance is grounded, the first end of the 4th resistance and the first end and described first of the 5th resistance
The base stage of triode is separately connected, and the second end of the 5th resistance is connect with the external enabled systems end, and the described 1st
The emitter of pole pipe is connect with the second end of the 4th resistance, the collector of first triode and the 6th resistance
First end connection, the first end of the 6th resistance are also connect with the temperature management end of the controller, the 6th resistance
Second end is connect with the input terminal of the adapter.
7. power circuit as claimed in claim 6, which is characterized in that the temperature sensing circuit includes the 8th resistance, the 9th
Resistance, the tenth resistance, eleventh resistor and master control system power supply；Wherein,
The first end of 8th resistance is connect with the second end of the second resistance, the second end of the 8th resistance with it is described
The first end of the first end of 9th resistance, the first end of the tenth resistance and the eleventh resistor is separately connected, and described
The second end of nine resistance is connect with the input terminal of the master control system power supply, the second end of the tenth resistance and master control system end
Connection, the second end ground connection of the eleventh resistor.
8. power circuit as claimed in claim 7, which is characterized in that the power circuit further includes third capacitor, the 4th electricity
Appearance, the 5th capacitor and the discharge load power supply；Wherein,
The first end of the first end of the third capacitor, the first end of the 4th capacitor and the 5th capacitor respectively all with institute
State the pressure feedback port connection of controller, the second end and the described 5th of the second end of the third capacitor, the 4th capacitor
The second end of capacitor is grounded, the pressure feedback port of the controller also respectively with the battery and the discharge load power supply
Input terminal connection.
9. the power circuit as described in claim 4 to 8 any one, which is characterized in that the input terminal of the switching circuit with
The input terminal of the adapter connects, and the output end of the switching circuit is connect with the input terminal of the charging circuit, described to fill
The temperature management end of circuit and the enabled circuit connection, the temperature management end of the charging circuit is via the second resistance
It is separately connected with the temperature sensing circuit and the battery, the pressure feedback port of the charging circuit is via the discharge load
Power supply is connect with the battery.
10. a kind of electronic equipment, which is characterized in that the electronic equipment includes electricity as claimed in any one of claims 1 to 9
Source circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268235.5U CN209170009U (en) | 2018-12-29 | 2018-12-29 | Power circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268235.5U CN209170009U (en) | 2018-12-29 | 2018-12-29 | Power circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209170009U true CN209170009U (en) | 2019-07-26 |
Family
ID=67328139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822268235.5U Active CN209170009U (en) | 2018-12-29 | 2018-12-29 | Power circuit and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN209170009U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116054334A (en) * | 2023-01-31 | 2023-05-02 | 云码智能(海南)科技有限公司 | Power supply control circuit, method, electronic device, storage medium, and program product |
| TWI819369B (en) * | 2021-01-25 | 2023-10-21 | 新加坡商鴻運科股份有限公司 | Charging circuit and adapter |
-
2018
- 2018-12-29 CN CN201822268235.5U patent/CN209170009U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI819369B (en) * | 2021-01-25 | 2023-10-21 | 新加坡商鴻運科股份有限公司 | Charging circuit and adapter |
| CN116054334A (en) * | 2023-01-31 | 2023-05-02 | 云码智能(海南)科技有限公司 | Power supply control circuit, method, electronic device, storage medium, and program product |
| CN116054334B (en) * | 2023-01-31 | 2023-12-08 | 云码智能(海南)科技有限公司 | Power supply control circuit, method, electronic device, storage medium, and program product |
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