CN207588555U - A kind of electric power system of power concentrator - Google Patents
A kind of electric power system of power concentrator Download PDFInfo
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- CN207588555U CN207588555U CN201721788403.2U CN201721788403U CN207588555U CN 207588555 U CN207588555 U CN 207588555U CN 201721788403 U CN201721788403 U CN 201721788403U CN 207588555 U CN207588555 U CN 207588555U
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Abstract
The utility model is related to a kind of electric power systems of power concentrator, wherein, concentrator includes Clock battery, clock chip and backup battery, Clock battery is electrically connected with clock chip, power supply is electrically connected with clock chip, backup battery is electrically connected by backup battery power supply circuit with clock chip, which includes power supply, backup battery charging circuit, backup battery power supply circuit, Clock battery power supply circuit and single-chip microprocessor MCU.Compared with prior art, the utility model has the advantage of：The setting of backup battery extends the power supply to clock chip, solve the problems, such as caused concentrator clock failure when Clock battery is under-voltage, backup battery further increases power supply of the backup battery to clock chip, the use of more convenient user using rechargeable battery simultaneously.
Description
Technical field
The utility model is related to field of power communication, and in particular to a kind of electric power system of power concentrator.
Background technology
Concentrator is the centre management equipment and control device of remote auto meter reading system, connection terminal, computer or logical
Believe the central connection point equipment of equipment, be responsible for timing reading terminals data, the order transmission of system, data communication, network management,
The functions such as lateral transport of logout, data.
With the continuous propulsion that electric power information is transformed, usage amount of the concentrator in centralized meter-reading system is constantly increasing
Add, key components of the clock chip as concentrator, ammeter data acquisition is carried out to the concentrator zero moment and upload main website
System plays a key effect, and maintains the time of clock chip usually using Clock battery at present, but scene operation concentrator is set
When standby, easily by environmental disturbances, burn into electric leakage occurs for battery or electricity is exhausted when that can not run, during by leading to concentrator
Between be not allowed, the final meter-reading function for influencing concentrator.
In the prior art, usually when there is battery undervoltage, Clock battery is replaced, then reset the concentrator time, torn open
It is cumbersome to unload equipment replacement, user experience can be influenced；Or more exchange device, concentrator archives are reset, are reached the standard grade again；Or
Person is carried out clock recovery in a manner that software mechanism is using storage, is stored using software when concentrator Clock battery fails
Mode, when power was lost between it is long, the experience that time deviation is serious, these schemes will all influence user can be caused, pole is brought to user
Big inconvenience.
Therefore, it is necessary to existing concentrator is improved further.
Utility model content
Technical problem to be solved in the utility model is in view of the above-mentioned state of the art, to provide a kind of easy to use
And it can effectively solve the problem that the electric power system of the under-voltage power concentrator of Clock battery.
Technical solution is used by the utility model solves above-mentioned technical problem：A kind of power supply system of power concentrator
System, the concentrator include Clock battery and clock chip, and the Clock battery is electrically connected with clock chip, separately there is power supply electricity
Source is connected with the clock chip, it is characterised in that：Backup battery is further included, the backup battery is supplied by backup battery
Circuit is electrically connected with clock chip, which includes power supply, backup battery charging circuit, backup battery
Power supply circuit, Clock battery power supply circuit and single-chip microprocessor MCU,
The VDD pins of the output terminal connection clock chip of the power supply, meanwhile, the output terminal of power supply also passes through
Later backup battery is connected for battery charger；
The backup battery collaborates after backup battery power supply circuit with the anode of Clock battery (1), then with clock core
The VDD pins of piece are connected；
The single-chip microprocessor MCU is connect with backup battery power supply circuit, the single-chip microprocessor MCU control backup battery power supply electricity
Road.
Preferably, the backup battery charging circuit includes first resistor, second resistance, the first triode, the first MOS
Pipe, the second triode, current-limiting resistance, the first zener diode, 3rd resistor, the 4th resistance, the 5th resistance, the first capacitance and
Second capacitance, wherein,
The first end of the first resistor is connected with single-chip microprocessor MCU, the second end of first resistor and the of second resistance
Base stage of the one end with the first triode is connected, and the emitter-base bandgap grading of the first triode and the second end of second resistance are grounded, and described
The collector of one triode is connected with the grid of the first metal-oxide-semiconductor, the source electrode of first metal-oxide-semiconductor and the 4.0V input terminals of power supply
It is connected, one end of first capacitance is connected with the source electrode of the first metal-oxide-semiconductor, the second end ground connection of the first capacitance；
The first end of the 3rd resistor is connected with the 4.0V input terminals of power supply, the second end of 3rd resistor and first
The collector of triode is connected；Emitter-base bandgap grading of the drain electrode of first metal-oxide-semiconductor respectively with the first end of the 4th resistance and the second triode is connected,
The base stage of second triode is connected with the first end of the 5th resistance, the second end of the 4th resistance and the of the 5th resistance
Two ends are grounded, and are connected after the collector connection current-limiting resistance of second triode with the anode of the first zener diode, and first
The cathode of zener diode is connected by socket with backup battery, and VBAT output terminals and the backup battery of the backup battery supply
The VBAT input terminals of circuit are connected；One end of second capacitance is connected with the cathode of the first zener diode, the second capacitance
Second end ground connection.
Further preferably, the backup battery power supply circuit includes the 6th resistance, the 7th resistance, the 8th resistance, the 9th
Resistance, the tenth resistance, third transistor, the 4th triode, the second metal-oxide-semiconductor, third capacitance, the second zener diode, inductance L,
14 resistance and third diode, wherein,
The first end of 14th resistance is connected with the BAT on/off ends of single-chip microprocessor MCU, the second end of the 14th resistance with
The anode of third diode is connected, and the first end of the 6th resistance is connected with the POWER CK ends of single-chip microprocessor MCU, and the of the 6th resistance
Two ends are connected with the base stage of third transistor, the emitter grounding of the third transistor, the collector of third transistor and the three or two
First end of the cathode of pole pipe with the 7th resistance is connected, and the second end of the 7th resistance and the first end of the 8th resistance are with the 4th
The base stage of triode is connected, and the second end of the 8th resistance and the emitter-base bandgap grading of the 4th triode are grounded；
The first end of tenth resistance is connected with the collector of the 4th triode, second end and the backup battery of the tenth resistance
VBAT output terminals be connected；The collector of 4th triode is connected with the grid of the second metal-oxide-semiconductor, the source electrode of the second metal-oxide-semiconductor with
The first end of inductance is connected；
The first end of the third capacitance and the first end of the 9th resistance are connected with the first end of inductance, the third electricity
The second end ground connection of appearance, the second end of the 9th resistance and the second end of inductance with the VBAT output terminals of the backup battery
It is connected；The drain electrode of second metal-oxide-semiconductor exports 3.6V voltages, output 3.6V after being connected with the anode of the second zener diode
Voltage end is the 3.6V output terminals of backup battery, and the 3.6V output terminals of the backup battery are connected with Clock battery power supply circuit,
To power to clock chip.In this way, in the case where concentrator is in power-down state, the POWER CK ends of single-chip microprocessor MCU detect
Electric signal, low level is effective, and third transistor is not turned on, at this point, the electric current at the BAT on/off ends of single-chip microprocessor MCU is through the 14th
Make the 4th triode ON after resistance, third diode and the 7th resistance, and open the second metal-oxide-semiconductor, so as to make backup battery
3.6V output terminals realize power supply to the clock chip on Clock battery power supply circuit.
Preferably, the Clock battery power supply circuit includes Clock battery, the 11st resistance, the 12nd resistance, the tenth
The first end of three resistance, the first diode and the second diode, the 11st resistance and the 12nd resistance is electric with clock
The cathode in pond is connected, and the second end of the 11st resistance and the 12nd resistance is grounded, and the anode of the Clock battery is respectively with
The first end of 13 resistance is connected, and the second end of the 13rd resistance is connected with the anode of the first diode, the first diode
Cathode be connected with the anode of the second diode, the cathode of second diode is connected with the VDD pins of clock chip.
Preferably, the Clock battery power supply circuit has further included third zener diode, is in concentrator and powers on shape
Under state, the 3.3V output terminals of the power supply are connected with the anode of third zener diode, the third zener diode
Cathode is connected with the VDD pins of clock chip, to power to clock chip under being in power-up state in concentrator.
In order to be used to judge whether Clock battery to be under-voltage, it is preferable that be also associated with using on the Clock battery power supply circuit
In the RTCBAT ends of acquisition Clock battery voltage.In this way, facilitating acquisition Clock battery voltage, judge that Clock battery is so as to facilitate
It is no under-voltage.
Preferably, the Clock battery power supply circuit has further included the 4th capacitance and the 15th resistance, the 4th capacitance
It is connected with the first end of the 15th resistance with the FOE pins of clock chip, the second of the 4th capacitance and the 15th resistance
End is grounded.
Further preferably, the backup battery is removable installed in concentrator.In this way, when backup battery fails,
Backup battery is convenient for changing, extends the service life of concentrator, uses to more convenient user.
Preferably, the Clock battery is lithium battery.
Compared with prior art, the utility model has the advantage of：Standby is set in the electric power system of the power concentrator
Battery, in the case where concentrator is in power-up state, power supply powers to clock chip；In the case where concentrator is in power-down state, after
During standby battery capacity abundance, backup battery powers to clock chip, in backup battery not enough power supply, Clock battery and clock core
Piece is electrically connected for powering to clock chip, and the setting of backup battery extends the power supply to clock chip, efficiently solves
When Clock battery is under-voltage the problem of caused concentrator clock failure, while backup battery uses rechargeable battery, in concentrator
In the state of normally powering on, power supply charges to rechargeable battery, further increases power supply of the backup battery to clock chip,
The use of more convenient user.
Description of the drawings
Fig. 1 is the flow chart of the method for supplying power to of the power concentrator of the utility model embodiment；
Fig. 2 is the circuit diagram of the backup battery charging circuit of the utility model embodiment electric power system；
Fig. 3 is the circuit diagram of the backup battery power supply circuit of the utility model embodiment electric power system；
Fig. 4 is the circuit diagram of the Clock battery power supply circuit of the utility model embodiment electric power system.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing embodiment.
As shown in Figure 1, the concentrator of the utility model embodiment includes Clock battery 1, clock chip 2 and backup battery
3, Clock battery 1 is electrically connected with clock chip 2, separately has power supply to be connected with the clock chip 2, backup battery 3 passes through
Backup battery power supply circuit is electrically connected with clock chip 2, in the case where concentrator is in power-up state, power supply and clock chip 2
It is electrically connected and to power to clock chip 2；In the case where concentrator is in power-down state, backup battery 3 or Clock battery 1 for
It powers to clock chip 2, under being in power-down state in concentrator, the output voltage of backup battery 3 is higher than Clock battery 1
Output voltage, therefore, it is necessary to judge whether the electricity of backup battery 3 is sufficient, if during 3 electricity abundance of backup battery, backup battery 3
It is electrically connected by backup battery power supply circuit with clock chip 2, thus to power to clock chip 2；In 3 electricity of backup battery
When insufficient, Clock battery 1 is electrically connected to power to clock chip 2 with clock chip 2；Wherein, Clock battery 1 is lithium electricity
The method of supplying power to of the power concentrator in pond, i.e. the present embodiment, includes following steps：
Step 1) in the process of running, judges whether concentrator is in power-up state, if concentrator is in power-up state,
Then perform step 2)；Otherwise, step 3) is performed；
Step 2), power supply power to clock chip 2, and return to operation；
Step 3), the output supply voltage of backup battery 3；
Step 4), whether the electricity for comparing backup battery 3 is sufficient, if the electricity of backup battery 3 is sufficient, performs step 5)；
Otherwise, step 6) is performed；
Step 5), backup battery 3 power to clock chip 2, and return to operation；
Step 6), Clock battery 1 power to clock chip 2, and return to operation.
In the present embodiment, backup battery 3 is removable installed in concentrator, in this way, when backup battery fails, it is convenient
Maintenance personal replaces backup battery, more convenient and practical.
As shown in Figures 2 to 4, using the electric power system of the method for supplying power to of above-mentioned power concentrator, include power supply,
Backup battery charging circuit, backup battery power supply circuit, Clock battery power supply circuit and single-chip microprocessor MCU 5, wherein, power supply electricity
The VDD pins of the one output terminal connection clock chip 2 in source, meanwhile, the output terminal of power supply is also by backup battery charging electricity
Road connects backup battery 3；Backup battery 3 collaborates after backup battery power supply circuit with the anode of Clock battery 1, then with when
The VDD pins of clock chip 2 are connected；Single-chip microprocessor MCU 5 is connected with backup battery power supply circuit, and single-chip microprocessor MCU 5 is according to power down
State is come whether controlling the startup of backup battery power supply circuit.
In the present embodiment, backup battery 3 is rechargeable battery, and backup battery 3 is connected with backup battery charging circuit, and should
Backup battery 3 can be connected with backup battery power supply circuit, single-chip microprocessor MCU 5 and backup battery charging circuit and backup battery
Power supply circuit is connected, and power supply can be electrically connected respectively with backup battery charging circuit and Clock battery power supply circuit, clock
Be connected with Clock battery 1 on battery feed circuit, backup battery power supply circuit with behind the anode interflow of Clock battery 1 and can and when
The VDD pins of clock chip 2 are connected.Specifically, in the case where concentrator is in power-up state, power supply can fill rechargeable battery
Electricity；In the case where concentrator is in power-down state, single-chip microprocessor MCU 5 receives power-off signal and opens rechargeable battery or Clock battery confession
Electricity.
As shown in Fig. 2, backup battery charging circuit includes first resistor R1, second resistance R2, the first triode Q1,
One metal-oxide-semiconductor M1, the second triode Q2, current-limiting resistance R, the first zener diode VD1,3rd resistor R3, the 4th resistance R4, the 5th
Resistance R5, the first capacitance C1 and the second capacitance C2, wherein,
The first end of first resistor R1 is connected with single-chip microprocessor MCU 5, and the second end of first resistor R1 is with second resistance R2's
Base stage of the first end with the first triode Q1 is connected, and the emitter-base bandgap grading of the first triode Q1 and the second end of second resistance R2 connect
Ground, the collector of the first triode Q1 are connected with the grid of the first metal-oxide-semiconductor M1, the source electrode of the first metal-oxide-semiconductor M1 and power supply
4.0V input terminals are connected, and one end of the first capacitance C1 is connected with the source electrode of the first metal-oxide-semiconductor M1, the second termination of the first capacitance C1
Ground；
The first end of 3rd resistor R3 is connected with the 4.0V input terminals of power supply, the second end of 3rd resistor R3 and first
The collector of triode Q1 is connected；The drain electrode of first metal-oxide-semiconductor M1 respectively with the first end of the 4th resistance R4 and the second triode Q2
Emitter-base bandgap grading is connected, and the base stage of the second triode Q2 is connected with the first end of the 5th resistance R5, the second end and the 5th of the 4th resistance R4
The second end of resistance R5 is grounded, the sun after the collector connection current-limiting resistance R of the second triode Q2 with the first zener diode VD1
Extremely it is connected, the cathode of the first zener diode VD1 is connected by socket 6 with rechargeable battery, the VBAT output terminals of rechargeable battery
It is connected with the VBAT input terminals of backup battery power supply circuit；One end of second capacitance C2 and the cathode of the first zener diode VD1
It is connected, the second end ground connection of the second capacitance C2.
Backup battery charging circuit realizes the detailed process of power supply：Microcontroller MPU output high level signals are effective, high level
Through first resistor R1, open the first metal-oxide-semiconductor M1, the 4.0V input terminals input 4.0V of power supply leads the second triode Q2
It is logical, it charges so as to fulfill to rechargeable battery, the VBAT output terminals of rechargeable battery and the VBAT input terminals of backup battery power supply circuit
It is connected, so as to achieve the purpose that the power supply of rechargeable battery.
As shown in figure 3, backup battery power supply circuit includes the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th
Resistance R9, the tenth resistance R10, third transistor Q3, the 4th triode Q4, the second metal-oxide-semiconductor M2, third capacitance C3, the second voltage stabilizing
Diode VD2, inductance L, 14 resistance 14 and third diode V3, wherein,
The first end of 14th resistance 14 is connected with the BAT on/off ends of single-chip microprocessor MCU 5, and the second of the 14th resistance 14
End is connected with the anode of third diode V3, and the first end of the 6th resistance R6 is connected with the POWE CK ends of single-chip microprocessor MCU 5, and the 6th
The second end of resistance R6 is connected with the base stage of third transistor Q3, the emitter grounding of third transistor Q3, third transistor Q3's
First end of the cathode of collector and third diode V3 with the 7th resistance R7 is connected, the second end of the 7th resistance R7 and the 8th electricity
It hinders base stage of the first end of R8 with the 4th triode Q4 to be connected, the second end of the 8th resistance R8 and the emitter-base bandgap grading of the 4th triode Q4
It is grounded；
The first end of tenth resistance R10 is connected with the collector of the 4th triode Q4, the second end of the tenth resistance R10 and charging
The VBAT output terminals of battery are connected；The collector of 4th triode Q4 is connected with the grid of the second metal-oxide-semiconductor M2, the second metal-oxide-semiconductor M2's
Source electrode is connected with the first end of inductance L；
The first end of the first end of third capacitance C3 and the first end of the 9th resistance R9 with inductance L is connected, third capacitance
The second end ground connection of C3, the second end of the 9th resistance R9 and the second end of inductance L are connected with the VBAT output terminals of rechargeable battery；
The drain electrode of second metal-oxide-semiconductor M2 exports 3.6V voltages, output 3.6V voltages after being connected with the anode of the second zener diode VD2
Hold the 3.6V output terminals for backup battery 3, the 3.6V output terminals of backup battery 3 are connected with power supply circuit of clock, to pair when
Clock chip 2 is powered.
The specific work process that backup battery power supply circuit powers to clock chip：The BAT on/off ends of single-chip microprocessor MCU 5
It is always under normal circumstances high level, the POWER CK ends of single-chip microprocessor MCU 5 detect power-off signal, and low level is effective, third
Triode Q3 is not turned on, at this point, the electric current at the BAT on/off ends of single-chip microprocessor MCU 5 is through the 14th resistance R14, third diode
It is connected the 4th triode Q4 after V3 and the 7th resistance R7, and opens the second metal-oxide-semiconductor M2, rechargeable battery output 3.6V voltages,
So as to fulfill the power supply to clock chip 2.
As shown in figure 4, Clock battery power supply circuit include Clock battery 1, the 11st resistance 11, the 12nd resistance 12,
The first end of 13rd resistance 13, the first diode V1 and the second diode V2, the 11st resistance 11 and the 12nd resistance 12
Cathode with Clock battery 1 is connected, and the second end of the 11st resistance 11 and the 12nd resistance 12 is grounded, Clock battery 1
First end of the anode respectively with the BAT ends of clock chip 2 and the 13rd resistance 13 is connected, the second end of the 13rd resistance 13 and the
The anode of one diode V1 is connected, and the cathode of the first diode V1 is connected with the anode of the second diode V2, the second diode V2
Cathode be connected with clock chip 2.In this way, in the case where concentrator is in power-down state, and during 3 not enough power supply of backup battery, energy
Enough powered by Clock battery 1 to clock chip 2.
In order to facilitate judging whether Clock battery is under-voltage, in the present embodiment, it is also associated with using on Clock battery power supply circuit
In the RTCBAT ends of acquisition Clock battery voltage, which is connected with the anode of Clock battery.
In the present embodiment, Clock battery power supply circuit has further included third zener diode VD3, is in and powers in concentrator
Under state, the 3.3V output terminals of power supply are connected with the anode of third zener diode VD3, third zener diode VD3's
Cathode is connected with the VDD pins of clock chip 2, to power to clock chip 2 under being in power-up state in concentrator.This
Sample, under the normal power-up state of concentrator, power supply output 3.3V, and can be powering to clock chip 2.In addition, clock
Battery feed circuit has further included the first of the 4th capacitance C4 and the 15th resistance R15, the 4th capacitance C4 and the 15th resistance R15
End is connected with the FOE pins of clock chip 2, and the second end of the 4th capacitance C4 and the 15th resistance R15 are grounded.
In the present embodiment, concentrator is under normal power-up state, and the 3.3V of power supply output crosses 1 third voltage stabilizing two
Pole pipe VD3, it is higher by the voltage of the first diode V1 and the second diode V2 than Clock battery 1, it is high according to whose voltage, whose electricity taken
Circuit principle, be that power supply supplies electricity to clock chip 2 under normal circumstances.
In the present embodiment, in concentrator failure, since the power reguirements of Clock battery power supply circuit are low, in maintenance personal
Before repair, backup battery can keep for a long time power, more efficiently solve because Clock battery it is under-voltage caused by collection
The problem of middle device clock failure.
Above description is merely a prefered embodiment of the utility model, it is noted that for those of ordinary skill in the art
For, under the premise of the principle of the utility model is not departed from, a variety of remodeling or improvement can be carried out to the utility model, these are
It is considered as within the scope of protection of the utility model.
Claims (9)
1. a kind of electric power system of power concentrator, the concentrator includes Clock battery (1) and clock chip (2), described
Clock battery (1) is electrically connected with clock chip (2), separately has power supply to be connected with the clock chip (2), feature exists
In：Backup battery (3) is further included, the backup battery (3) is electrically connected by backup battery power supply circuit and clock chip (2)
It connects, which includes power supply, backup battery charging circuit, backup battery power supply circuit, Clock battery power supply electricity
Road and single-chip microprocessor MCU (5),
The VDD pins of the output terminal connection clock chip (2) of the power supply, meanwhile, the output terminal of power supply also passes through
Later for battery charger connection backup battery (3)；
The backup battery (3) is collaborated after backup battery power supply circuit with the anode of Clock battery (1), then with clock core
The VDD pins of piece (2) are connected；
The single-chip microprocessor MCU (5) connect with backup battery power supply circuit, single-chip microprocessor MCU (5) the control backup battery power supply electricity
Road.
2. the electric power system of power concentrator according to claim 1, it is characterised in that：The backup battery charging circuit
Include first resistor (R1), second resistance (R2), the first triode (Q1), the first metal-oxide-semiconductor (M1), the second triode (Q2),
Current-limiting resistance (R), the first zener diode (VD1), 3rd resistor (R3), the 4th resistance (R4), the 5th resistance (R5), the first electricity
Hold (C1) and the second capacitance (C2), wherein,
The first end of the first resistor (R1) is connected with single-chip microprocessor MCU (5), the second end of first resistor (R1) and the second electricity
It hinders base stage of the first end of (R2) with the first triode (Q1) to be connected, the emitter-base bandgap grading of the first triode (Q1) and second resistance (R2)
Second end be grounded, the collector of first triode (Q1) is connected with the grid of the first metal-oxide-semiconductor (M1), the first MOS
The source electrode of pipe (M1) is connected with the 4.0V input terminals of power supply, one end and the first metal-oxide-semiconductor (M1) of first capacitance (C1)
Source electrode be connected, the second end of the first capacitance (C1) ground connection；
The first end of the 3rd resistor (R3) is connected with the 4.0V input terminals of power supply, the second end of 3rd resistor (R3) with
The collector of first triode (Q1) is connected；The drain electrode of first metal-oxide-semiconductor (M1) first end and second with the 4th resistance (R4) respectively
The emitter-base bandgap grading of triode (Q2) is connected, and the base stage of second triode (Q2) is connected with the first end of the 5th resistance (R5), described
The second end of 4th resistance (R4) and the second end of the 5th resistance (R5) are grounded, the collector connection of second triode (Q2)
Anode of the current-limiting resistance (R) afterwards with the first zener diode (VD1) is connected, and the cathode of the first zener diode (VD1) is by inserting
Seat (6) is connected with backup battery (3), the VBAT output terminals of the backup battery (3) and the VBAT of backup battery power supply circuit
Input terminal is connected；One end of second capacitance (C2) is connected with the cathode of the first zener diode (VD1), the second capacitance (C2)
Second end ground connection.
3. the electric power system of power concentrator according to claim 2, it is characterised in that：The backup battery power supply circuit
Include the 6th resistance (R6), the 7th resistance (R7), the 8th resistance (R8), the 9th resistance (R9), the tenth resistance (R10), third
Triode (Q3), the 4th triode (Q4), the second metal-oxide-semiconductor (M2), third capacitance (C3), the second zener diode (VD2), inductance
(L), the 14th resistance (14) and third diode (V3), wherein,
The first end of 14th resistance (14) is connected with the BAT on/off ends of single-chip microprocessor MCU (5), and the of the 14th resistance (14)
Two ends are connected with the anode of third diode (V3), the first end of the 6th resistance (R6) and the POWE CK ends of single-chip microprocessor MCU (5)
It is connected, the second end of the 6th resistance (R6) is connected with the base stage of third transistor (Q3), the emitter-base bandgap grading of the third transistor (Q3)
Ground connection, the first end of the collector of third transistor (Q3) and the cathode of third diode (V3) with the 7th resistance (R7) are connected,
The base stage of the second end of 7th resistance (R7) and the first end of the 8th resistance (R8) with the 4th triode (Q4) is connected, institute
It states the second end of the 8th resistance (R8) and the emitter-base bandgap grading of the 4th triode (Q4) is grounded；
The first end of tenth resistance (R10) is connected with the collector of the 4th triode (Q4), the second end of the tenth resistance (R10) and institute
The VBAT output terminals for stating backup battery (3) are connected；The collector of 4th triode (Q4) and the grid phase of the second metal-oxide-semiconductor (M2)
Even, the source electrode of the second metal-oxide-semiconductor (M2) is connected with the first end of inductance (L)；
The first end of the first end of the third capacitance (C3) and the first end of the 9th resistance (R9) with inductance (L) is connected, institute
State the second end ground connection of third capacitance (C3), the second end of the 9th resistance (R9) and the second end of inductance (L) with it is described
The VBAT output terminals of backup battery (3) are connected；The drain electrode of second metal-oxide-semiconductor (M2) and the sun of the second zener diode (VD2)
Pole exports 3.6V voltages, 3.6V output terminal of the output 3.6V voltage ends for backup battery (3), the backup battery after being connected
(3) 3.6V output terminals are connected with Clock battery power supply circuit, to power to clock chip (2).
4. the electric power system of power concentrator according to claim 3, it is characterised in that：The Clock battery power supply circuit
Include Clock battery (1), the 11st resistance (11), the 12nd resistance (12), the 13rd resistance (13), the first diode (V1)
And second diode (V2), the first end of the 11st resistance (11) and the 12nd resistance (12) with Clock battery (1)
Cathode be connected, the second end of the 11st resistance (11) and the 12nd resistance (12) is grounded, the anode of the Clock battery (1)
It is connected with the first end of the 13rd resistance (13), the second end of the 13rd resistance (13) and the anode of the first diode (V1)
It is connected, the cathode of the first diode (V1) is connected with the anode of the second diode (V2), the cathode of second diode (V2)
It is connected with the VDD pins of clock chip (2).
5. the electric power system of power concentrator according to claim 4, it is characterised in that：The Clock battery power supply circuit
Third zener diode (VD3), the 3.3V output terminals of the power supply and the sun of third zener diode (VD3) are further included
Extremely it is connected, the cathode of the third zener diode (VD3) is connected with the VDD pins of clock chip (2), to be in concentrator
It powers under power-up state to clock chip (2).
6. the electric power system of power concentrator according to claim 5, it is characterised in that：The Clock battery power supply circuit
On be also associated with RTCBAT ends for acquiring Clock battery (1) voltage.
7. electric power system according to claim 6, it is characterised in that：The Clock battery power supply circuit has further included the 4th
The first end and clock chip of capacitance (C4) and the 15th resistance (R15), the 4th capacitance (C4) and the 15th resistance (R15)
(2) FOE pins are connected, and the second end of the 4th capacitance (C4) and the 15th resistance (R15) is grounded.
8. the electric power system of power concentrator according to claim 1, it is characterised in that：The backup battery (3) is removable
It is set in concentrator with unloading.
9. the electric power system of power concentrator according to claim 2, it is characterised in that：The Clock battery (1) is lithium
Battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721788403.2U CN207588555U (en) | 2017-12-20 | 2017-12-20 | A kind of electric power system of power concentrator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721788403.2U CN207588555U (en) | 2017-12-20 | 2017-12-20 | A kind of electric power system of power concentrator |
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ID=62739047
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525542A (en) * | 2020-03-26 | 2020-08-11 | 江阴长仪集团有限公司 | Power supply method for safely storing data of intelligent electric energy meter |
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2017
- 2017-12-20 CN CN201721788403.2U patent/CN207588555U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525542A (en) * | 2020-03-26 | 2020-08-11 | 江阴长仪集团有限公司 | Power supply method for safely storing data of intelligent electric energy meter |
| CN111525542B (en) * | 2020-03-26 | 2021-10-22 | 江阴长仪集团有限公司 | Power supply method for safely storing data of intelligent electric energy meter |
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