CN208285044U - A kind of standby electricity power management circuits for Switching Power Supply - Google Patents
A kind of standby electricity power management circuits for Switching Power Supply Download PDFInfo
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- CN208285044U CN208285044U CN201820910397.1U CN201820910397U CN208285044U CN 208285044 U CN208285044 U CN 208285044U CN 201820910397 U CN201820910397 U CN 201820910397U CN 208285044 U CN208285044 U CN 208285044U
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Abstract
Yesterday, the utility model discloses a kind of standby electricity power management circuits for Switching Power Supply, the standby electricity power management circuits include reference voltage generating circuit, control circuit and charge circuit, reference voltage generating circuit provides reference voltage for first comparator, control circuit is control rechargeable battery charge and discharge, charge circuit provides charge circuit for rechargeable battery, and rechargeable battery is made to complete charging.The utility model has the beneficial effects that circuit structure is simple, when rechargeable battery is in electric discharge, control circuit can make circuit self-locking, rechargeable battery is set to continue to complete electric discharge, it can manual undulated control switch after electric discharge to be done, it is connected to the first output end of control switch with control switch second output terminal is made, power supply will make rechargeable battery enter charged state by the 9th resistance；During the charging process, first comparator and the second comparator do not work, and when battery is full of, if continuous switch power supply, rechargeable battery is in trickle charge, and rechargeable battery will not cause to overcharge and damage battery.
Description
Technical field
The utility model belongs to field of switch power, and in particular to a kind of backup power source management electricity for Switching Power Supply
Road.
Background technique
Battery is the important component of switch power supply system, and the key that carry mains failure back loading not power down is appointed
Business.Current common scheme is that battery is directly hung on DC master row by lower electric contactor, by rectification module by alternating current
It charges after rectification to it, when mains failure, passing through DC master row by battery is load supplying.
However, it is generally the case that battery needs to discharge to battery during the charging process once in a while, to extend battery
Service life.If battery is made to be chronically at charging, it will the service life for seriously affecting battery is often less than battery
Service life is just without power reservoir capacity.
Utility model content
To overcome technological deficiency of the existing technology, the utility model discloses a kind of standby electricities for Switching Power Supply
Power management circuits, the simple performance of circuit are stablized, and the low capacity backup power source charging of Switching Power Supply is suitble to.
Technical solution adopted by the utility model to solve its technical problems is a kind of backup power sources for Switching Power Supply
Circuit is managed, the standby electricity power management circuits include reference voltage generating circuit, control circuit and charge circuit, the benchmark
Voltage generating circuit includes first resistor, second resistance, voltage-stabiliser tube and the first potentiometer, and described first resistor one end and power supply are just
Input terminal connection, the first resistor other end are connect with regulator tube negative, and voltage-stabiliser tube anode is connect with power supply negative input end, the first electricity
The resistance other end is also connect with second resistance one end, and the second resistance other end is connect with the first potentiometer first end, the first potentiometer
Tip side is connect by 3rd resistor with first comparator inverting input terminal, and the first potentiometer second end connects power supply negative input
End；
The control circuit includes first comparator, the second comparator, the 4th resistance, the 6th resistance, the 7th resistance, the 8th
Resistance, capacitor, the second potentiometer, eleventh resistor, switching tube and diode, the second potentiometer first end are connecting rechargeable battery just
Pole, the second potentiometer second end are connect with power supply negative input end, and the second potentiometer tip side is by the 4th resistance compared with first
The connection of device non-inverting input terminal, first comparator output end are connect with the second comparator inverting input terminal, the 6th resistance one end and electricity
The connection of source positive input terminal, the 6th resistance other end connect the 7th resistance, and the 6th resistance other end is also with the second comparator the same as mutually defeated
Enter end connection, the second comparator output terminal is connect with the 8th resistance one end, and the 8th resistance other end connects diode cathode, two poles
Pipe cathode connects first comparator inverting input terminal, and the 8th resistance other end also passes through capacitance connection power supply negative input end, and first
Comparator output terminal is also connected with switch controlled end, and switching tube input terminal is connected by eleventh resistor and control switch control terminal
It connects, switching tube output end connects power supply negative input end；
The charge circuit includes control switch, rechargeable battery and the 9th resistance, the 9th resistance one end and power supply positive input
End connection, the 9th resistance other end connect the first output end of control switch, the second output terminal and rechargeable battery of control switch
Anode connection, negative electrode of chargeable battery connect power supply negative input end.
Preferably, the switching tube is NPN triode.
Preferably, the switching tube is NMOS tube.
Preferably, further include light emitting diode, light emitting diode anode is connect with the 9th resistance, light emitting diode cathode with
First output end of control switch connects.
Preferably, the first comparator and the model of the second comparator are TL082.
The utility model has the beneficial effects that circuit structure is simple, and when rechargeable battery is in electric discharge, the second comparator
Output end exports high level and the high level is input to first comparator inverting input terminal through the 8th resistance, capacitor and diode,
Complete the circuit self-locking, rechargeable battery made to complete electric discharge, after electric discharge to be done can manual undulated control switch, make control switch
First output end is connected to control switch second output terminal is made, and power supply will make rechargeable battery enter charging shape by the 9th resistance
State；During the charging process, first comparator and the second comparator do not work, when battery is full of, if continuous switch power supply, and charging
Battery is in trickle charge, and rechargeable battery will not cause to overcharge and damage battery, extends rechargeable battery service life.
Detailed description of the invention
Fig. 1 is that switching tube described in the utility model is a kind of specific reality of NPN triode and rechargeable battery in discharge condition
Apply mode schematic diagram.
Fig. 2 is that switching tube described in the utility model is a kind of specific reality of NPN triode and rechargeable battery in charged state
Apply mode schematic diagram.
Fig. 3 is that switching tube described in the utility model is a kind of specific embodiment schematic diagram of NMOS tube.
Appended drawing reference: R1- first resistor, R2- second resistance, R3- 3rd resistor, the 4th resistance of R4-, the second current potential of R5-
Device, II1- the second potentiometer first end, II2- the second potentiometer second end, II3- the second potentiometer tip side, the 6th electricity of R6-
Resistance, the 7th resistance of R7-, the 8th resistance of R8-, the 9th resistance of R9-, the first potentiometer of R10-, R11- eleventh resistor, I1- first
Potentiometer first end, I2- the first potentiometer second end, I3- the first potentiometer tip side, C- capacitor, ZD- voltage-stabiliser tube, bis- pole D1-
Pipe, D2- light emitting diode, Q- switching tube, K- switch controlled end, IN- switching tube input terminal, OUT- switching tube output end, K1-
Control switch control terminal, the first output end of K2-, K3- second output terminal, A1- first comparator, the second comparator of A2-, AC1- electricity
Source positive input terminal, AC2- power supply negative input end.
Specific embodiment
More detailed description is done to the embodiments of the present invention below in conjunction with attached drawing and appended drawing reference, makes to be familiar with ability
The technology people in domain can implement accordingly after studying this specification carefully.It should be appreciated that specific embodiment described herein is only to solve
The utility model is released, is not used to limit the utility model.
In the description of the present invention, it should be noted that the orientation of the instructions such as term " on ", "horizontal", "inner" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description,
Rather than the circuit or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in utility model.
Embodiment: a kind of standby electricity power management circuits for Switching Power Supply referring to figure 1, the backup power source
Management circuit includes reference voltage generating circuit, control circuit and charge circuit, and the reference voltage generating circuit includes first
Resistance R1, second resistance R2, voltage-stabiliser tube ZD and the first potentiometer R10, the one end the first resistor R1 and power supply positive input terminal AC1
Connection, the first resistor R1 other end are connect with voltage-stabiliser tube ZD cathode, and voltage-stabiliser tube ZD anode is connect with power supply negative input end AC2, the
The one resistance R1 other end is also connect with the one end second resistance R2, and the second resistance R2 other end and the first potentiometer first end I1 connect
It connects, the first potentiometer tip side I3 is connect by 3rd resistor R3 with first comparator A1 inverting input terminal, the first potentiometer the
Two end I2 connection power supply negative input end AC2；
The control circuit includes first comparator A1, the second comparator A1, the 4th resistance R4, the 6th resistance R6, the 7th
Resistance R7, the 8th resistance R8, capacitor C, the second potentiometer R5, eleventh resistor R11, switching tube (Q) and diode D1, the second electricity
Position device first end II1 connection rechargeable battery E anode, the second potentiometer second end II2 are connect with power supply negative input end AC2, and second
Potentiometer tip side II3 is connect by the 4th resistance R4 with first comparator A1 non-inverting input terminal, first comparator A1 output end
It is connect with the second comparator A2 inverting input terminal, the 6th one end resistance R6 is connect with power supply positive input terminal AC1, and the 6th resistance R6 is another
One end connects the 7th resistance R7, and the 6th resistance R6 other end is also connect with the second comparator A2 non-inverting input terminal, the second comparator
A2 output end is connect with the 8th one end resistance R8, and the 8th resistance R8 other end connects diode D1 anode, and diode D1 cathode connects
Connecing first comparator A1 inverting input terminal, the 8th resistance R8 other end also passes through capacitor C connection power supply negative input end AC2, and first
Comparator A1 output end is also connected with switch controlled end K, and switching tube input terminal IN passes through eleventh resistor R11 and control switch control
K1 connection in end processed, switching tube output end OUT connection power supply negative input end；
The charge circuit includes control switch, rechargeable battery E and the 9th resistance R9, and the 9th one end resistance R9 and power supply are just
Input terminal AC1 connection, the 9th resistance R9 other end connect the first output end K2 of control switch, the second output terminal of control switch
K3 is connect with rechargeable battery E anode, and rechargeable battery E cathode connects power supply negative input end AC2.
In the present embodiment, switching tube Q is NPN triode, wherein NPN triode grid is switch controlled end K, NPN tri-
Pole pipe current collection extremely switching tube input terminal IN, NPN triode emits extremely switching tube output end OUT, if control switch control terminal
K1 is connect with control switch second output terminal K3, then it represents that rechargeable battery E is in discharge condition, power supply positive input terminal AC1 output
Voltage through first resistor R1, second resistance R2, the first potentiometer R10 divide, adjust the first potentiometer tip side I3 can obtain
Different partial pressure values, the partial pressure value transport to first comparator A1 inverting input terminal as reference voltage, charging through 3rd resistor R3
The voltage value of battery E transports to first comparator A1 non-inverting input terminal through the second potentiometer R5 and the 4th resistance R4 partial pressure, when first
Comparator A1 non-inverting input terminal voltage is higher than its reverse phase terminal voltage value, and first comparator A1 output end exports high level, NPN three-level
Pipe conducting, rechargeable battery E are discharged by eleventh resistor R11 and NPN triode, when rechargeable battery E continuous discharge to the first ratio
When being greater than its in-phase end voltage value compared with device A1 anti-phase input terminal voltage value, first comparator A1 output end exports low level, NPN tri-
Pole pipe cut-off, the second comparator A2 inverting input terminal is low level at this time, and voltage value is than the second comparator A2 non-inverting input terminal
Low, then second voltage comparator A2 output end exports high level, and passes through the 8th resistance R8, capacitor C and diode D1 for the height
Level is sent to first comparator A1 inverting input terminal, keeps circuit self-locking, and NPN triode is persistently ended, and rechargeable battery E electric discharge stops
Only；If the first output end K2 of control switch and the second output terminal K3 connection of control switch, then it represents that rechargeable battery E, which is in, to be filled
Electricity condition, power supply positive input terminal AC1 will make rechargeable battery E enter charged state by the 9th resistance R9, during the charging process, the
One comparator A1 and the second comparator A2 do not work, and when rechargeable battery E is full of, if continuous switch power supply, rechargeable battery E is in
Trickle charge, rechargeable battery E will not cause to overcharge and damage battery, extend rechargeable battery E service life.
Wherein, the 6th resistance R6 and the 7th resistance R7 forms bleeder circuit, provides for the second comparator A2 non-inverting input terminal
Reference voltage.
Preferably, the switching tube Q is NMOS tube.
In another embodiment, as shown in Fig. 3, switching tube Q is NMOS tube, and wherein NMOS tube grid is switching tube
Control terminal K, NMOS tube drain electrode are switching tube input terminal IN, and NMOS tube source electrode is switching tube output end OUT, the conducting item of NMOS tube
Part is identical as NPNS triode, i.e., grid is high level then NMOS transistor conduction, so switching tube Q is the standby electricity source capsule of NMOS tube
It is that NPN triode is identical that circuit operation principle, which is managed, with switching tube Q, and wherein NMOS transistor conduction loss ratio NPN triode is lower, but
NPN triode cost is lower than NMOS tube.
It preferably, further include light emitting diode D2, light emitting diode D2 anode is connect with the 9th resistance R9, light emitting diode
First output end K2 connection of D2 cathode and control switch.
In another embodiment, as shown in Fig. 3, light emitting diode D2 is what whether rechargeable battery E charged normal
Display device such as charges normal, then Light-Emitting Diode D2 shines, if light emitting diode D2 does not shine without charging.
Preferably, the model of the first comparator A1 and the second comparator A2 are TL082.
In another embodiment, TL082 is that general bis- use of J-FET calculates amplifier, in the standby electricity source capsule
It is used in reason circuit as voltage comparator, feature has: lower input offset voltage and drift current；Output is protected without short circuit
Shield, input stage input impedance with higher, built-in frequency quilt repay circuit, higher slew rate, and maximum working voltage is
18V。
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field
For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical
In novel protection scope.
Claims (5)
1. a kind of standby electricity power management circuits for Switching Power Supply, it is characterised in that: the standby electricity power management circuits include
Reference voltage generating circuit, control circuit and charge circuit, the reference voltage generating circuit include first resistor (R1), second
Resistance (R2), voltage-stabiliser tube (ZD) and the first potentiometer (R10), described first resistor one end (R1) and power supply positive input terminal (AC1)
Connection, first resistor (R1) other end are connect with voltage-stabiliser tube (ZD) cathode, voltage-stabiliser tube (ZD) anode and power supply negative input end (AC2)
Connection, first resistor (R1) other end are also connect with the one end second resistance (R2), second resistance (R2) other end and the first current potential
Device first end (I1) connection, the first potentiometer tip side (I3) pass through 3rd resistor (R3) and first comparator (A1) anti-phase input
End connection, the first potentiometer second end (I2) connect power supply negative input end (AC2)；
The control circuit include first comparator (A1), the second comparator (A1), the 4th resistance (R4), the 6th resistance (R6),
7th resistance (R7), the 8th resistance (R8), capacitor (C), the second potentiometer (R5), eleventh resistor (R11), switching tube (Q) and
Diode (D1), the second potentiometer first end (II1) connect rechargeable battery (E) anode, the second potentiometer second end (II2) and electricity
Source negative input end (AC2) connection, the second potentiometer tip side (II3) pass through the 4th resistance (R4) and first comparator (A1) same to phase
Input terminal connection, first comparator (A1) output end are connect with the second comparator (A2) inverting input terminal, the 6th resistance (R6) one
End is connect with power supply positive input terminal (AC1), and the 6th resistance (R6) other end connects the 7th resistance (R7), and the 6th resistance (R6) is another
End is also connect with the second comparator (A2) non-inverting input terminal, and the second comparator (A2) output end and the 8th resistance one end (R8) connect
It connects, the 8th resistance (R8) other end connects diode (D1) anode, and diode (D1) cathode connects first comparator (A1) reverse phase
Input terminal, the 8th resistance (R8) other end also pass through capacitor (C) connection power supply negative input end (AC2), and first comparator (A1) is defeated
Outlet is also connected with switch controlled end (K), and switching tube input terminal (IN) passes through eleventh resistor (R11) and control switch control terminal
(K1) it connects, switching tube output end (OUT) connects power supply negative input end；
The charge circuit includes control switch, rechargeable battery (E) and the 9th resistance (R9), the 9th resistance one end (R9) and power supply
Positive input terminal (AC1) connection, the 9th resistance (R9) other end connect the first output end (K2) of control switch, and the of control switch
Two output ends (K3) are connect with rechargeable battery (E) anode, and rechargeable battery (E) cathode connects power supply negative input end (AC2).
2. being used for the standby electricity power management circuits of Switching Power Supply as described in claim 1, it is characterised in that: the switching tube
It (Q) is NPN triode.
3. being used for the standby electricity power management circuits of Switching Power Supply as described in claim 1, it is characterised in that: the switching tube
It (Q) is NMOS tube.
4. being used for the standby electricity power management circuits of Switching Power Supply as described in claim 1, it is characterised in that: further include luminous two
Pole pipe (D2), light emitting diode (D2) anode are connect with the 9th resistance (R9), light emitting diode (R9) cathode and control switch
First output end (K2) connection.
5. being used for the standby electricity power management circuits of Switching Power Supply as described in claim 1, it is characterised in that: described first compares
The model of device (A1) and the second comparator (A2) is TL082.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820910397.1U CN208285044U (en) | 2018-06-13 | 2018-06-13 | A kind of standby electricity power management circuits for Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820910397.1U CN208285044U (en) | 2018-06-13 | 2018-06-13 | A kind of standby electricity power management circuits for Switching Power Supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208285044U true CN208285044U (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820910397.1U Active CN208285044U (en) | 2018-06-13 | 2018-06-13 | A kind of standby electricity power management circuits for Switching Power Supply |
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| Country | Link |
|---|---|
| CN (1) | CN208285044U (en) |
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2018
- 2018-06-13 CN CN201820910397.1U patent/CN208285044U/en active Active
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