CN110198064A - A kind of control circuit of power supply, method and charger - Google Patents
A kind of control circuit of power supply, method and charger Download PDFInfo
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- CN110198064A CN110198064A CN201910559524.7A CN201910559524A CN110198064A CN 110198064 A CN110198064 A CN 110198064A CN 201910559524 A CN201910559524 A CN 201910559524A CN 110198064 A CN110198064 A CN 110198064A
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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
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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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of control circuit of power supply, method and charger, which includes: control module, switch module, Voltage stabilizing module and battery access interface；The first end of control module is connect with battery access interface, and the second end of control module and the first end of switch module connect, and the second end of switch module and the first end of Voltage stabilizing module connect, the third end external power supply module of switch module；The second end external connecting function module of Voltage stabilizing module；When battery access interface does not access battery, control module generates shutdown control instruction, with the shutdown of control switch module, and disconnects the connection between power module and functional module.The embodiment of the present invention passes through the shutdown of control module control switch module, to realize power supply of the automatic control power supply module to functional module, to realize the automatic no-load power consumption for reducing and designing the charger of functional module.
Description
Technical field
The present embodiments relate to power supply control technical field more particularly to a kind of control circuit of power supply, method and fill
Electric appliance.
Background technique
When designing charger, since the requirement of energy consumption certification needs to drop generally when charger is in light condition
The no-load power consumption of low charger.However some products need to exist other functional modules and charger design since design needs
It together, can be using battery management module to battery charge information, battery status for example, functional module is battery management module
It is managed etc. being monitored, at this point, need to control the power consumption of battery management module.Light condition is in order to meet charger
Energy consumption authentication requesting, the power consumption of battery management module need to will be reduced to a very small value.
Currently, the mode for designing the charger power consumption of functional module is reduced, generally using physical switch, optimization power consumption electricity
Road or reduction microprocessor power consumption etc..Wherein, one end of physical switch is connect with power module, and the other end and functional module connect
It connects, when charger is in light condition, manually disconnects physical switch, to disconnect the power supply to functional module, although adopting
It can thoroughly be powered off with physical switch, but since physical switch needs to be manually operated, cause high labor cost and convenience low；
And using optimization power consuming circuit or by the way of reducing microprocessor power consumption, it is not thorough due to reducing power consumption, causes the wave of resource
Take.
Summary of the invention
In view of this, the present invention provides the control circuit, method and charger of a kind of power supply, realizes automatic reduce and design
The no-load power consumption of the charger of functional module.
In a first aspect, the embodiment of the invention provides a kind of control circuits of power supply, comprising: control module, switch module,
Voltage stabilizing module and battery access interface；
The first end of the control module is connect with the battery access interface, the second end of the control module with it is described
The first end of switch module connects, and the second end of the switch module is connect with the first end of the Voltage stabilizing module, the switch
The third end external power supply module of module；The second end external connecting function module of the Voltage stabilizing module；
When the battery access interface does not access battery, the control module generates shutdown control instruction, to control
Switch module shutdown is stated, and disconnects the connection between the power module and the functional module.
Second aspect, the embodiment of the invention provides a kind of control methods of power supply, comprising:
When battery access interface does not access battery, control module generates shutdown control instruction；
The control module is according to shutdown control instruction control switch module shutdown, to disconnect power module and functional module
Between connection.
The third aspect, the embodiment of the invention also provides a kind of chargers, comprising: functional module and as described in relation to the first aspect
Power supply control circuit.
Foregoing invention embodiment is connect by the first end of control module with battery access interface, the second end of control module
It is connect with the first end of switch module, the second end of switch module and the first end of Voltage stabilizing module connect, the third of switch module
Hold external power supply module；The second end external connecting function module of Voltage stabilizing module；When battery access interface does not access battery, mould is controlled
Block generates shutdown control instruction, with the shutdown of control switch module, and disconnects the connection between power module and functional module.This hair
Bright embodiment is turned off by control module control switch module, to realize power supply of the automatic control power supply module to functional module,
To realize the no-load power consumption of the automatic charger for reducing the functional module of design.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of the control circuit of power supply provided in an embodiment of the present invention；
Fig. 2 is a kind of functional block diagram of the control circuit of power supply provided in an embodiment of the present invention；
Fig. 3 is the functional block diagram of the control circuit of another power supply provided in an embodiment of the present invention；
Fig. 4 is the functional block diagram of the control circuit of another power supply provided in an embodiment of the present invention；
Fig. 5 is the functional block diagram of the control circuit of another power supply provided in an embodiment of the present invention；
Fig. 6 is the functional block diagram of the control circuit of another power supply provided in an embodiment of the present invention；
Fig. 7 is a kind of flow chart of the control method of power supply provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of structural block diagram of the control circuit of power supply provided in an embodiment of the present invention.The present embodiment is applicable to
It automatically controls and powers to functional module, to realize automatic the case where reducing the no-load power consumption for designing the charger of functional module.
The control circuit of the power supply is configurable on charger, and functional module is configured on the charger.
With reference to Fig. 1, the control circuit of power supply provided in an embodiment of the present invention specifically includes that control module 110, switch module
120, Voltage stabilizing module 130 and battery access interface 140；
Wherein, the first end of control module 110 is connect with battery access interface 140, the second end of control module 110 with open
The first end connection of module 120 is closed, the second end of switch module 120 is connect with the first end of Voltage stabilizing module 130, switch module
120 third end external power supply module 150；The second end external connecting function module 160 of Voltage stabilizing module 130；
When battery access interface 140 does not access battery, control module 110 generates shutdown control instruction, with control switch
Module 120 turns off, and disconnects the connection between power module 150 and functional module 160.
Specifically, when battery access interface 140 does not access battery, the first end of control module 110 does not have voltage defeated
Enter, then control module 110 is in close state, i.e., control module 110 generates shutdown control instruction, and control switch module 120 is closed
Disconnected, so that power module 150 can not be by 120 output voltage of switch module to Voltage stabilizing module 130, i.e., power module 150 can not
It powers to functional module 160.It is also understood that at this point, functional module 160 is in standby, thus, design functional mould
The charger of block 160 will not generate any power consumption, meet no-load power consumption requirement required when charger is in unloaded.
Although it is to be appreciated that battery needs to charge, battery itself still has some voltages, i.e., in battery incoming end
When mouth 140 is inserted into battery, the first end of control module 110 has voltage input；Correspondingly, not inserted in battery access interface 140
When entering battery, the first end of control module 110 does not have voltage input.
The technical solution of the present embodiment is connect by the first end of control module with battery access interface, control module
Second end and the first end of switch module connect, and the second end of switch module and the first end of Voltage stabilizing module connect, switch module
Third end external power supply module；The second end external connecting function module of Voltage stabilizing module；When battery access interface does not access battery,
Control module generates shutdown control instruction, with the shutdown of control switch module, and disconnects the company between power module and functional module
It connects.The embodiment of the present invention is turned off by control module control switch module, to realize automatic control power supply module to functional module
Power supply, to realize the automatic no-load power consumption for reducing and designing the charger of functional module.
In embodiment, when battery access interface 140 accesses battery, control module 110 generates conducting control instruction, with
Control switch module 120 is connected；Power module 150 passes through switch module 120 to 130 output voltage of Voltage stabilizing module, by steady
Die block 130 provides burning voltage to functional module 160.
It should be noted that, since battery itself has voltage, controlling mould when battery access interface 140 accesses battery
Block 110 controls itself conducting by the voltage that battery inputs, and generates conducting control instruction, is connected with control switch module 120,
To which power module 150 can be by 120 output voltage of switch module to Voltage stabilizing module 130, to pass through Voltage stabilizing module 130 to function
Module 160 provides burning voltage, so that designing the charger of functional module 160 can work normally.
The technical solution of the present embodiment, physical switch is thoroughly powered off and electronic switch automatically control on-off the advantages of, lead to
The power supply of control module and switch module automatic control power supply module to functional module is crossed, so that realizing the automatic design that reduces has
The no-load power consumption of the charger of functional module, so as to design the lower power consumption of the charger of functional module to close to zero, i.e.,
The technical solution of the present embodiment thoroughly closes the power supply of electric power source pair of module functional module by the control circuit of power supply, meets
The authentication requesting of power consumption.
On the basis of the above embodiments, the control module in the control circuit of power supply is further described.
Fig. 2 is a kind of functional block diagram of the control circuit of power supply provided in an embodiment of the present invention.
With reference to Fig. 2, control module 110 includes: the first transistor Q1, the first zener diode ZD1 and first resistor R1；
Wherein, the first of the first end of the first transistor Q1, the cathode of the first zener diode ZD1 and first resistor R1
End is connect with battery access interface 140, and the second end of the first transistor Q1 is connect with the first end of switch module 120；
When battery access interface 140 accesses battery, the first end of the first transistor Q1 receives high level signal, so that
The first transistor Q1 conducting, and generate conducting control instruction.
In embodiment, the first transistor Q1 can be metal-oxide-semiconductor.It is to be understood that the first transistor Q1 is used to control out
Close the on-off of module 120.The first transistor Q1 can be connected for high level, or low level conducting, with used crystalline substance
Body cast number is related.In embodiment, the work by taking the first transistor Q1 is high level conducting as an example, to the control circuit of power supply
Principle is illustrated.Specifically, when battery access interface 140 accesses battery, since battery itself has voltage, battery
Voltage turn-on to the first transistor Q1 grid, thus make the first transistor Q1 be connected.It is to be understood that the first transistor Q1
Grid receives high level signal, so that the first transistor Q1 is connected, and conducting control instruction is generated, with control switch module
120 conductings.
On the basis of the above embodiments, the switch module in the control circuit of power supply is further described.
Fig. 3 is the functional block diagram of the control circuit of another power supply provided in an embodiment of the present invention.
With reference to Fig. 3, switch module 120 includes: second transistor Q2, the second zener diode ZD2 and second resistance R2；
Wherein, the first of the first end of second transistor Q2, the anode of the second zener diode ZD2 and second resistance R2
End is connect with the second end of the first transistor Q1；The second end of second transistor Q2 is connect with the first end of Voltage stabilizing module 130；
The second end at the third end of second transistor Q2, the cathode of the second zener diode ZD2 and second resistance R2 with power supply mould
Block 150 connects；
In the first transistor Q1 conducting, the first transistor Q1 is led by conducting control instruction, control second transistor Q2
It is logical.
In embodiment, second transistor Q2 can be metal-oxide-semiconductor.It is to be understood that the on-off of second transistor Q2 is used to
Determine the on-off of itself.Second transistor Q2 can be connected for high level, or low level conducting, with used crystal
Cast number is related.In embodiment, former to the work of the control circuit of power supply by taking second transistor Q2 is high level conducting as an example
Reason is illustrated.Specifically, when battery access interface 140 accesses battery, since battery itself has voltage, the electricity of battery
Pressure is conducting to the grid of the first transistor Q1, so that the first transistor Q1 be made to be connected.It is to be understood that the grid of the first transistor Q1
Pole receives high level signal, so that the first transistor Q1 is connected, and generates conducting control instruction.It is connected in the first transistor Q1
When, the first transistor Q1 can control second transistor Q2 conducting by conducting control instruction (high level signal).
On the basis of the above embodiments, the Voltage stabilizing module in the control circuit of power supply is further described.
Fig. 4 is the functional block diagram of the control circuit of another power supply provided in an embodiment of the present invention.
With reference to Fig. 4, Voltage stabilizing module 130 includes: voltage stabilizing chip 1301, enabling unit 1302,1303 and of input filter unit
Export filter unit 1304；
Wherein, the enable end of voltage stabilizing chip 1301 is connect with the first end of enabling unit 1302, and the of enabling unit 1302
Two ends are connect with the first end of input filter unit 1303, and the of the second end of input filter unit 1303 and switch module 120
The connection of two ends, the third end of input filter unit 1303 is connect with the input terminal of voltage stabilizing chip 1301；Voltage stabilizing chip 1301 it is defeated
Outlet is connect with the first end of output filter unit 1304, and the second end of output filter unit 1304 is connect with functional module 160.
In embodiment, voltage stabilizing chip 1301 can use TPS70933 voltage stabilizing chip, with what is exported to power module 150
Voltage carries out steady pressure treatment, and provides stable voltage to external functional module 160.
Fig. 5 is the functional block diagram of the control circuit of another power supply provided in an embodiment of the present invention.The present embodiment is upper
On the basis of stating embodiment, enabling unit 1302, input filter unit 1303 and output filter unit 1304 are made further
It embodies.
With reference to Fig. 5, input filter unit 1303 includes: first capacitor C1, the second capacitor C2 and 3rd resistor R3；First electricity
The first end and the first end of 3rd resistor R3 for holding C1 are connect with the input terminal of voltage stabilizing chip 1301, and the of 3rd resistor R3
The first end of two ends and the second capacitor C2 are connect with the second end of enabling unit 1302；The second end of second capacitor C2 and the
The second end of two-transistor Q2 connects.
Wherein, output filter unit 1304 includes: third capacitor C3 and the 4th capacitor C4；The first end of third capacitor C3 with
And the 4th the first end of capacitor C4 connect with the output end of voltage stabilizing chip 1301.
Wherein, enabling unit 1302 includes: third zener diode ZD2, the 5th capacitor C5, the electricity of the 4th resistance R4 and the 5th
Hinder R5；First end, the first end of the 5th capacitor C5, the first end and the 5th of the 4th resistance R4 of third zener diode ZD2
The first end of resistance R5 is connect with the enable end of voltage stabilizing chip 1301；The second end and input filter unit of 4th resistance R4
1303 first end connection.
In embodiment, when switch module 120 is connected, power module 150 can be by 120 output voltage of switch module extremely
Voltage stabilizing chip 1301, while input terminal (IN pin) of 150 output voltage of power module into pressure stabilizing mold core piece 1301,
It can be by enabling unit 1302 to enable end (EN pin) input control signal of voltage stabilizing chip 1301, to be activated by enable end
Voltage stabilizing chip 1301, to guarantee that voltage stabilizing chip 1301 works normally.Wherein, the enable end of voltage stabilizing chip 1301 can be high level
Effectively, or low level is effective.In embodiment, right by taking the enable end of voltage stabilizing chip 1301 is effective for high level as an example
Activation voltage stabilizing chip 1301 is illustrated.It is to be understood that receiving high level signal in the enable end of voltage stabilizing chip 1301, i.e.,
Voltage stabilizing chip 1301 can be activated to work normally.After the activation of voltage stabilizing chip 1301, voltage stabilizing chip 1301 can be to power module 150
Input voltage carries out steady pressure treatment, and by the output end of itself (OUT pin), burning voltage is exported to functional module 160,
So that functional module 160 works normally.
On the basis of the above embodiments, the control circuit of power supply is illustrated.Fig. 6 is that the embodiment of the present invention provides
Another power supply control circuit functional block diagram.It should be noted that the present embodiment is connect with being arranged there are four battery
For inbound port, the control circuit of power supply is illustrated.
With reference to Fig. 6, the control circuit of the power supply further include: first diode D1, the second diode D2, third diode
D3, the 4th diode D4, the 6th resistance R6 and the 7th resistance R7.
It should be noted that POWER refers to power module 150, the i.e. input power of charger；And Vsystem
It is system power supply, i.e., is attached with functional module 160, and provides the pin of power supply for functional module 160；GND be system and
The cathode of power supply；BAT1, BAT2, BAT3, BAT4 are four battery access interface of the control circuit of power supply respectively；First crystal
Pipe Q1 is the control switch of switch module 120, and for the on-off of control switch module 120, second transistor Q2 is the control of power supply
The main switch of circuit processed, for controlling the on-off between power module 150 and functional module 160；3rd resistor R3 is power supply
The current-limiting resistance of major loop in control circuit, first resistor R1 and the 6th resistance R6, second resistance R2 and the 7th resistance R7, the 4th
Resistance R4 and the 5th resistance R5 is control module 110, switch module 120 and the corresponding partial pressure current limliting electricity of enabling unit 1302 respectively
Resistance；Voltage stabilizing chip U1 is the linear stabilized power supply chip of the control circuit of power supply, to guarantee power module 150 to functional module
160 provide burning voltage；First diode D1, the second diode D2, third diode D3 and the 4th diode D4 are pair respectively
The diode for answering circuit plays a part of to separate voltage, electric current；First zener diode ZD1, the second zener diode ZD2 and
Three zener diode ZD3 are control module 110, switch module 120 and the corresponding zener diode of enabling unit 1302 respectively；The
One capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4 and the 5th capacitor C5 are the filtered electrical of corresponding circuits respectively
Hold.
It should be noted that any one interface in battery access interface B AT1, BAT2, BAT3, BAT4 all need with it is right
Answer a diode connection, by diode play the role of separate voltage, electric current, then again with current-limiting resistance R6 and first
The grid of transistor Q1 connects.Certainly, the quantity of battery is not defined in the control circuit of power supply, i.e. the quantity of battery
It can be multiple.Wherein, battery access interface B AT1, BAT2, BAT3, BAT4 respectively correspond first diode D1, the two or two pole
Pipe D2, third diode D3 and the 4th diode D4.
In embodiment, when the control circuit of power supply is standby, battery access interface BAT1, BAT2, BAT3, BAT4 do not have
Battery insertion, the grid of the first transistor Q1 do not have voltage, i.e. the first transistor Q1 is in close state, thus second transistor
Q2 is also at closed state, and the power module 150 for the control circuit finally entirely powered is also at closed state, i.e., entire power supply
Control circuit generated almost without any power consumption, certainly, the first transistor Q1 and second transistor Q2 are metal-oxide-semiconductor, electric leakage
It is extremely small, it can be ignored；When any one battery access interface in battery access interface BAT1, BAT2, BAT3, BAT4
After having battery insertion, although battery needs to charge, battery itself still has voltage, and the cathode of the cathode of battery and power supply
It is same level (low level) again, so the BAT voltage of battery itself can pass through corresponding first diode D1, the second diode
D2, third diode D3 or the 4th diode D4 are conducting to the grid of the first transistor Q1, so that the first transistor Q1 is opened,
And second transistor Q2 opening is controlled, final POWER (power module 150) is conducting to Vsystem, and passes through Vsystem to function
Energy module 160 is powered, so that functional module 160 can work normally.Similarly, after battery all pulls out, the control electricity of power supply
The power supply on road disconnects therewith, and the control circuit of power supply enters the standby mode of low-power consumption.It is to be understood that the confession in embodiment
The power supply supply of the control circuit of electricity has depended on whether battery insertion, when not having the control circuit powered when battery insertion
It is just connected without power supply, realized by way of hardware power down reduces the charger for designing functional module to the greatest extent
No-load power consumption.Wherein, the BAT voltage of battery can be the ceiling voltage of battery pack, or any economize on electricity in battery pack
The voltage in pond, as long as the BAT voltage of battery can make the first transistor Q1 be connected.
Physical switch is not only thoroughly powered off the advantages of automatically controlling with electronic switch and carried out by the technical solution of the present embodiment
In conjunction with also using conventional electronic component and built, have the characteristics that easily designed, low in cost, high reliablity, just
The control circuit of power supply is designed according to functional module the characteristics of.
On the basis of the above embodiments, the embodiment of the invention provides a kind of control method of power supply, Fig. 7 is the present invention
A kind of flow chart of the control method for power supply that embodiment provides.The control method of power supply in the present embodiment can be by above-mentioned
Power-supplying circuit in embodiment executes.
With reference to Fig. 7, the control method of the power supply includes the following steps:
Step 201, when battery access interface does not access battery, control module generate shutdown control instruction.
In embodiment, the first transistor Q1 when battery is not accessed in battery interface port 140, in control module 110
Grid there is no voltage, then the first transistor Q1 is in close state, at this point, control module 110 produce shutdown control instruction.
Step 202, control module are according to shutdown control instruction control switch module shutdown, to disconnect power module and function
Connection between module.
In embodiment, when the first transistor Q1 is in close state, in the first transistor Q1 control switch module 120
Second transistor Q2 be in close state, i.e., the first transistor Q1 controllable switch module 120 in control module 110 is in
Off-state, to disconnect the connection between power module 150 and functional module 160, so that power module 150 is without normal direction function mould
Block 160 is powered, i.e., functional module 160 will not generate any power consumption.
The technical solution of the present embodiment, by the way that when battery access interface does not access battery, control module generates shutdown control
System instruction, control module is turned off according to shutdown control instruction control switch module, to disconnect between power module and functional module
Connection, power supply of the automatic control power supply module to functional module is realized, so that realizing automatic reduce designs functional mould
The no-load power consumption of the charger of block.
The control method of above-mentioned power supply can be executed by the control circuit of power supply provided by any embodiment of the invention, tool
The standby corresponding functional module of control circuit and beneficial effect for executing power supply.
The embodiment of the invention also provides a kind of chargers, comprising: functional module and times as provided in above-described embodiment
The control circuit of one power supply.
Wherein, functional module can be one in battery management module, display module, monitoring modular and wireless transmitter module
Kind is several.Wherein, display module can be display screen, for showing battery status information, for example, battery status information can be with
For battery dump energy and cell operating status；Monitoring modular can be used for monitoring battery dump energy and cell operating status
Deng；Wireless transmitter module can be used for emitting wireless signal to other modules.Certainly, functional module is not especially limited, it can
It is adjusted according to the actual situation.
The control method of power supply provided by any embodiment of the invention can be performed in the charger, has the control electricity of power supply
The corresponding functional module in road and beneficial effect.
In embodiment, can be understood as can be to the equipment that battery charges, for example, charger can be for charger
Charge power supply, adapter or battery charger etc..Certainly, the epitaxial device of charger can be designed with charger itself one
It rises, is also possible to an independent removable device.In embodiment, the epitaxial device of charger can be battery management mould
The functional modules such as block, display equipment (being used to during the charging process, show the charge information of battery).
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of control circuit of power supply characterized by comprising control module, switch module, Voltage stabilizing module and battery access
Port；
The first end of the control module is connect with the battery access interface, the second end of the control module and the switch
The first end of module connects, and the second end of the switch module is connect with the first end of the Voltage stabilizing module, the switch module
Third end external power supply module；The second end external connecting function module of the Voltage stabilizing module；
When the battery access interface does not access battery, the control module generates shutdown control instruction, to open described in control
Module shutdown is closed, and disconnects the connection between the power module and the functional module.
2. circuit according to claim 1, which is characterized in that described when the battery access interface accesses battery
Control module generates conducting control instruction, to control the switch module conducting；The power module passes through the switch module
To the Voltage stabilizing module output voltage, to provide burning voltage to the functional module by Voltage stabilizing module.
3. circuit according to claim 2, which is characterized in that the control module includes: the first transistor, first steady
Press diode and first resistor；
The first end of the first end of the first transistor, the cathode of first zener diode and the first resistor is equal
It is connect with the battery access interface, the second end of the first transistor is connect with the first end of the switch module；
When the battery access interface accesses battery, the first end of the first transistor receives high level signal, so that
The first transistor conducting, and generate conducting control instruction.
4. circuit according to claim 3, which is characterized in that the switch module includes: second transistor, second steady
Press diode and second resistance；
The first end of the second transistor, the first end of the positive and described second resistance of second zener diode are equal
It is connect with the second end of the first transistor；The second end of the second transistor and the first end of the Voltage stabilizing module connect
It connects；The second end at the third end of the second transistor, the cathode of the second zener diode and the second resistance is and institute
State power module connection；
In the first transistor conducting, the first transistor controls the second transistor by conducting control instruction and leads
It is logical.
5. circuit according to claim 4, which is characterized in that the Voltage stabilizing module includes: voltage stabilizing chip, enabled list
Member, input filter unit and output filter unit；
The enable end of the voltage stabilizing chip is connect with the first end of the enabling unit, the second end of the enabling unit with it is described
The first end of input filter unit connects, and the second end of the input filter unit is connect with the second end of the switch module,
The third end of the input filter unit is connect with the input terminal of the voltage stabilizing chip；The output end of the voltage stabilizing chip with it is described
The first end connection of filter unit is exported, the second end of the output filter unit is connect with the functional module.
6. circuit according to claim 5, which is characterized in that the input filter unit includes: first capacitor, second
Capacitor and 3rd resistor；
The first end of the first end of the first capacitor and the 3rd resistor is connect with the input terminal of the voltage stabilizing chip,
The second end of the 3rd resistor and the first end of second capacitor are connect with the second end of the enabling unit；It is described
The second end of second capacitor is connect with the second end of the second transistor.
7. circuit according to claim 5, which is characterized in that the output filter unit includes: third capacitor and
Four capacitors；
The first end of the third capacitor and the first end of the 4th capacitor are connect with the output end of the voltage stabilizing chip.
8. circuit according to claim 5, which is characterized in that the enabling unit includes: third zener diode,
Five capacitors, the 4th resistance and the 5th resistance；
First end, the first end of the 5th capacitor, the first end and the 5th resistance of the 4th resistance of the third zener diode
First end connect with the enable end of the voltage stabilizing chip；The second end of 4th resistance and the input filter unit
First end connection.
9. a kind of control method of power supply characterized by comprising
When battery access interface does not access battery, control module generates shutdown control instruction；
The control module is according to shutdown control instruction control switch module shutdown, to disconnect between power module and functional module
Connection.
10. a kind of charger characterized by comprising functional module and such as the power supply as described in any in claim 1 to 8
Control circuit.
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| CN201910559524.7A CN110198064A (en) | 2019-06-26 | 2019-06-26 | A kind of control circuit of power supply, method and charger |
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| CN201910559524.7A CN110198064A (en) | 2019-06-26 | 2019-06-26 | A kind of control circuit of power supply, method and charger |
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| CN102694403A (en) * | 2012-05-30 | 2012-09-26 | 江苏科技大学 | Charger and control method thereof |
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| CN206452321U (en) * | 2017-01-17 | 2017-08-29 | 深圳市瑞必达科技有限公司 | A kind of low voltage start circuit |
| CN206894606U (en) * | 2017-04-28 | 2018-01-16 | 深圳市沃特玛电池有限公司 | A kind of power supply chip active circuit |
| CN209805473U (en) * | 2019-06-26 | 2019-12-17 | 深圳市道通智能航空技术有限公司 | Control circuit and charger of power supply |
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| CN102694403A (en) * | 2012-05-30 | 2012-09-26 | 江苏科技大学 | Charger and control method thereof |
| CN203278303U (en) * | 2013-04-28 | 2013-11-06 | 杭州阳光工具有限公司 | Lithium iron phosphate emergency power supply with short-circuit protection function |
| CN103378636A (en) * | 2013-06-28 | 2013-10-30 | 深圳市富满电子有限公司 | Mobile power source control chip and mobile power source with same |
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