The content of the invention
The technical problems to be solved by the invention are to provide a kind of pair of accessory power supply and the energy storage system based on double accessory power supplys
System, this pair of accessory power supply and the energy-storage system based on double accessory power supplys can save standby energy consumption and response is rapid.
The technical solution of invention is as follows:
A kind of pair of accessory power supply, including main control module, main auxiliary power supply and dormancy accessory power supply;
Main auxiliary power supply and dormancy accessory power supply are powered by energy-storage battery;
Main auxiliary power supply and dormancy accessory power supply connect 2 feeder ears of main control module respectively;
Main control module controls main auxiliary power supply by switch control unit;
Main control module is also associated with detection trigger circuit;Detection trigger circuit is powered by dormancy accessory power supply;
Main auxiliary power supply outputs a control signal to energy conversion module.
Dormancy accessory power supply is constantly in working condition, and the signal or main control module according to detection trigger electric circuit inspection are received
Instruction, double accessory power supplys are operated in following two stages:
(1) detection trigger circuit is not detected by trigger signal or trigger signal failure, in the control of the switch control unit
Under system, main auxiliary power supply is in blocking;
(2) detection trigger electric circuit inspection is to after trigger signal or main control module receives start-up command, in the switch control
Under the control of unit, main auxiliary power supply is in running order.
The signal of detection trigger electric circuit inspection refers to when user pushes button starting-up signal, or grid disruption signal.
Switch control unit includes PMOS Q13, NMOS tube Q16 and positive-negative-positive triode Q24;
SPS_CNTL is that the control of main accessory power supply enables control signal, SPS_CNTL termination triodes Q24 b poles;Three poles
Pipe Q24 c poles ground connection;Resistance R68 is connected between triode Q24 e poles and SPS_CNTL ends;Triode Q24 e poles and c poles
Between be connected to resistance R67;
Triode Q24 e poles also connect NMOS tube Q16 G poles;NMOS tube Q16 S poles ground connection;NMOS tube Q16 D poles warp
Resistance R65 connects PMOS Q13 G poles;
PMOS Q13 S poles connect supply voltage BAT+ ends (BAT+ can be energy-storage battery voltage);PMOS Q13 D poles
Powered for main accessory power supply, i.e., PMOS Q13 D poles connect the power input of main auxiliary power supply;PMOS Q13 D poles and S poles
Between be connected to resistance R59.
Described main auxiliary power supply and dormancy accessory power supply be based on LDO (LDO i.e. low dropout regulator,
A kind of low pressure difference linear voltage regulator) integrated circuit, and dormancy accessory power supply static standby current be uA grades.
Described main auxiliary power supply and dormancy accessory power supply exports 5V voltages.
Main control module is also associated with communicating circuit.
A kind of energy-storage system based on double accessory power supplys, including energy-storage battery, power conversion circuits and foregoing double auxiliary
Power supply;
Accumulator is that electrical equipment or power network are powered by power conversion circuits;Power conversion circuits are controlled by described
Main auxiliary power supply.
Energy-storage battery is also associated with charging circuit.
Main control module is also associated with control circuit, sample circuit, warning circuit, man-machine interaction circuit and telecommunication circuit;
Control circuit:It is the control centre of whole energy-storage system, receives the signal and communicating circuit of sample circuit collection
Instruction and information, control circuit are responded after handling these signals, instruction and information, pass through communicating circuit (communication
Module) instruction and information are sent, while showing the status information of energy-storage system, the electronic switch to double accessory power supplys provides control
Signal, switching state, and the first dc-dc to energy conversion system, the second dc-dc, inverter and fill
The electronic switch of electricity input provides control signal.Control circuit typically to use MCU, be existing mature technology.
Sample circuit:Be responsible for signal acquisition, gather the voltage of battery pack of energy-storage system, electric current, charging input voltage and
Electric current, and the first dc-dc of energy conversion system, the 2nd DC-DC conversions, inverter device, input voltage and electricity
The information such as stream, output voltage and electric current, guard mode;
Warning circuit:When the signal that Acquisition Circuit is collected occurs abnormal, control circuit is by warning circuit with acousto-optic
The abnormality of energy-storage system is passed to user by the form of signal.
Telecommunication circuit:The status signal of double accessory power supplys is sent to host computer or remote by control circuit by telecommunication circuit
Process control center, and for receiving the control instruction of host computer or remote control center, stored up while being obtained by telecommunication circuit
The voltage of energy battery, electric current, temperature, guard mode information.
Man-machine interaction circuit refers to the equipment such as display screen and keyboard.
The present invention devises main auxiliary power supply and dormancy accessory power supply.Main auxiliary power supply transfers from one department to another with main control circuit, energy
The circuit modules such as system, control circuit, sample circuit, warning circuit, communicating circuit, man-machine interaction circuit are connected, and there is provided these
Power supply needed for circuit module normal work.Dormancy accessory power supply with main control circuit, detection trigger circuit is connected, and there is provided be
System enters power supply required during park mode.
Main auxiliary power supply power consumption is larger, but with stronger load capacity, disclosure satisfy that main control circuit, energy transfer from one department to another
The circuit modules such as system, control circuit, sample circuit, warning circuit, communicating circuit, man-machine interaction circuit are required when operating at full capacity
The energy wanted.Dormancy accessory power supply stand-by power consumption is extremely low, and static standby current is only uA grades, but the energy that it is provided is enough
Meet the electricity needs of main control circuit and detection trigger circuit in the dormant state.
The energy-storage system is no in use, being constantly in resting state.When user pushes button start or sends out
When sending start-up command or grid disruption, when energy-storage system is changed to working condition by standby resting state, main control circuit leads to
Cross switch control and open main auxiliary power supply, main auxiliary power source transfers from one department to another to unite to main control circuit, energy, control circuit,
The circuit modules such as sample circuit, warning circuit, communicating circuit, man-machine interaction circuit are powered, and energy-storage system quickly enters work shape
State.
When user pushes button shutdown or sends shutdown command or normal power system restoration, energy-storage system is by working
When state enters standby resting state, main control circuit forbids main auxiliary power work by switching control, and now energy transfers from one department to another
Unite, control the circuit modules such as circuit, sample circuit, warning circuit, communicating circuit, man-machine interaction circuit without power supply,
In off position, any electricity will not be consumed.Main control module can enter resting state simultaneously, only open external interrupt and touch
Module is sent out, for responding detection trigger circuit, now the standby current of main control module is also within uA ranks.At energy-storage system
When standby resting state, only have main control module to be in running status with detection trigger circuit in system, and standby current exists
UA ranks, the power supply of dormancy accessory power supply is enough to provide this electrical demand.
Such design can meet accessory power supply required during energy-storage system normal work, and energy-storage system can be met again
Low-power consumption requirement under standby resting state, so as to reduce energy loss.Under standby park mode at detection trigger circuit
In working condition, it is ensured that the promptness of energy-storage system response.
Beneficial effect:
Compared with prior art, double accessory power supplys of the invention and the energy-storage system based on double accessory power supplys have used double auxiliary
The design of power supply is helped, the accessory power supply of different designs requirement is used in working condition and standby resting state, solves and use machine
Tool switch cost is high, the problem of responding not in time, while the problem of solving single accessory power supply energy loss.It is double in the present invention
Accessory power supply design can meet energy required during energy-storage system normal work, and energy-storage system can be met again and is in standby dormancy
Low-power consumption requirement under state, so as to reduce energy loss.Detection trigger circuit is in running order under standby park mode, really
The promptness of energy-storage system response is protected.
Embodiment 1:Such as Fig. 1~2, a kind of pair of accessory power supply, including main control module, main auxiliary power supply and dormancy auxiliary electricity
Source;
Main auxiliary power supply and dormancy accessory power supply are powered by energy-storage battery;
Main auxiliary power supply and dormancy accessory power supply connect 2 feeder ears of main control module respectively;
Main control module controls main auxiliary power supply by switch control unit;
Main control module is also associated with detection trigger circuit;Detection trigger circuit is powered by dormancy accessory power supply;
Main auxiliary power supply outputs a control signal to energy conversion module.
Dormancy accessory power supply is constantly in working condition, and the signal or main control module according to detection trigger electric circuit inspection are received
Instruction, double accessory power supplys are operated in following two stages:
(1) detection trigger circuit is not detected by trigger signal or trigger signal failure, in the control of the switch control unit
Under system, main auxiliary power supply is in blocking;
(2) detection trigger electric circuit inspection is to after trigger signal or main control module receives start-up command, in the switch control
Under the control of unit, main auxiliary power supply is in running order.
The signal of detection trigger electric circuit inspection refers to when user pushes button starting-up signal, or grid disruption signal.
Switch control unit includes PMOS Q13, NMOS tube Q16 and positive-negative-positive triode Q24;
SPS_CNTL is that the control of main accessory power supply enables control signal, SPS_CNTL termination triodes Q24 b poles;Three poles
Pipe Q24 c poles ground connection;Resistance R68 is connected between triode Q24 e poles and SPS_CNTL ends;Triode Q24 e poles and c poles
Between be connected to resistance R67;
Triode Q24 e poles also connect NMOS tube Q16 G poles;NMOS tube Q16 S poles ground connection;NMOS tube Q16 D poles warp
Resistance R65 connects PMOS Q13 G poles;
PMOS Q13 S poles connect supply voltage BAT+ ends (BAT+ can be energy-storage battery voltage);PMOS Q13 D poles
Powered for main accessory power supply, i.e., PMOS Q13 D poles connect the power input of main auxiliary power supply;PMOS Q13 D poles and S poles
Between be connected to resistance R59.
Described main auxiliary power supply and dormancy accessory power supply be based on LDO (LDO i.e. low dropout regulator,
A kind of low pressure difference linear voltage regulator) integrated circuit, and dormancy accessory power supply static standby current be uA grades.
Described main auxiliary power supply and dormancy accessory power supply exports 5V voltages.
Main control module is also associated with communicating circuit.
A kind of energy-storage system based on double accessory power supplys, including energy-storage battery, power conversion circuits and foregoing double auxiliary
Power supply;
Accumulator is that electrical equipment or power network are powered by power conversion circuits;Power conversion circuits are controlled by described
Main auxiliary power supply.
Energy-storage battery is also associated with charging circuit.
Described power conversion circuits are DC-DC conversion circuit or DC-AC inverter circuits.
Illustrate for schematic diagram definition in Fig. 2:
BAT+---------- energy-storage battery supply inputs.
SPS_CNTL---------- main auxiliaries power supply enables control signal.
SPS_Work---------- main auxiliary power supplys are supplied to main control circuit, energy to transfer from one department to another to unite, control circuit, sampling
The power supply of the modules such as circuit, warning circuit, communicating circuit, man-machine interaction circuit.
SPS_Sleep---------- dormancy accessory power supplys are supplied to main control circuit and the power supply of detection trigger.
U6---------- static state standby currents are the linear LDO, preferably Seiko of uA ranks S812C50AMC-C3E-
T2G, output voltage is+5Vdc, the main control circuit and triggering of U6 and its peripheral circuit to energy-storage system in a dormant state
Detection module is powered.
U7---------- load capacities extremely strong linear LDO, preferably TI companies LM1117IDTX-5.0, output voltage
For+5.0Vdc, when U7 and its peripheral circuit meet energy-storage system normal work main control circuit, energy transfer from one department to another to unite, control circuit,
The power demands of the modules such as sample circuit, warning circuit, communicating circuit, man-machine interaction circuit.
Q13----------PMOS is managed, and is used as electronic switch, selected PMOS meets VDSMore than 30V, ID(A) it is big
In 2A, in the present invention, it is preferred to IR IRLML9301TRPBF.
Control principle explanation:
Energy-storage system in a dormant state when, main control electricity of the dormancy accessory power supply to energy-storage system in a dormant state
Road and detection trigger module for power supply, the now power consumption of whole energy-storage system is in uA ranks, and stand-by power consumption is extremely low, substantially reduces energy
Amount consumption.When detection trigger module, which detects user, to push button start or send start-up command or grid disruption,
SPS_CNTL is put height by the main control module of detection trigger data bits in a dormant state, main control module, opens Q13, Q13
After conducting, main auxiliary power work transfers from one department to another to unite, controls circuit, sample circuit, warning circuit, communication to main control circuit, energy
The module for power supply such as circuit, man-machine interaction circuit, energy-storage system enters working condition.When closing energy-storage system, main control circuit
SPS_CNTL is set low, Q13 is closed, main auxiliary power supply is stopped, and now energy transfers from one department to another to unite, controls circuit, sample circuit, announcement
The modules such as alert circuit, communicating circuit, man-machine interaction circuit are also stopped, and now energy-storage system enters resting state, energy storage system
The stand-by power consumption of system is greatly reduced, and now detection trigger module is still powered by dormancy accessory power supply, can detect starting-up signal
Deng external drive signal, so that triggering main control module enters working condition, it is ensured that the real-time responsiveness of energy-storage system.
Constant-current charging circuit as shown in Figure 3-4, each element or label declaration:
VIN+----- input power positive poles.
VIN------ input power negative poles.
VOUT+----- out-put supply positive poles.
VOUT----- out-put supply negative poles.
The positive pole of VREF+----- reference power sources
C1 is input filter capacitor.
C2 is output filter capacitor.
C3 is current sample feedback filtering.
R1, R2, R5, C3 constitute current sample feedback line.
R3, R4, are voltage sample feedback circuit.
D1 is isolation diode.
Operation principle explanation:
Using stable reference power supply as reference voltage, using R1, R2, R5 partial pressures obtain the voltage equal with FB, so that
Pass through the size that FB goes to adjust DCDC IC inside PWM and controls output current.For example, when output current becomes big, in sampling electricity
Voltage on resistance R5 will be raised, because VRFE+ is fixed value, so as to be that FB voltages become big, FB becomes big, and dutycycle will subtract
It is few, so as to be that output current is reduced, and a complete feedback is completed, reach the purpose of stabling current output.
Constant current is calculated:
If the voltage that R5 upstream overcurrent is produced is VIo, output current is Io
Reference voltage is VREF+=2.5V,
FB voltages are VFB=0.6V,
R5=0.1 Ω, R1=40K Ω, R2=10K Ω
Then:
VIo=Io*R5
VFB=VIo+ ((VREF+-VIo) * R2/ (R1+R2))
Calculate:
Io=(VFB* (R1+R2)-R2*VREF+)/R1*R5
The equation if K=(VFB* (R1+R2)-R2*VREF+)/R1 is taken
Io=K/R5
In terms of calculation formula, Io output currents and output voltage and input voltage do not have any relation, only and VFB.R1,
R2, VREF are relevant, and these parameters are in specific design, they be all it is fixed (VFB be in stable state it is fixed, for
Chip fp7192 constant pressure chips, its steady-state value is 0.6v), so K is necessarily a fixed value, so formula:
Io=K/R5 has the fabulous linearity, and with excellent controllability.
Parameter above being assigned the occurrence being set above can obtain:
Io=(VFB* (R1+R2)-R2*VREF+)/R1*R5
=(0.6* (40+10) -10*2.5)/40*0.1
=1.25A
Constant pressure chip, about 0.8 yuan of cost
It can see, this scheme introduces fixed VREF+, only taken so that Io becomes one with R5 in equation more than
The linear equation of sample resistance, makes Io become constant, so as to reach the purpose of constant current.
The characteristics of this programme reference voltage constant flow method, is as follows:
1. using stable fixed VREF+ voltages, it is easy to control and the stability control of precision.
2. fed back using current sample is become into electric resistance partial pressure, it is more simple and reliable.
3. applicability is wide, the circuit of any required constant current can be used.
4. cost is greatly reduced, cost is about 1/3 that 12V/1A outputs are done using IC constant current schemes.
Constant-current charging circuit is a kind of brand-new constant current implementation.Its core is to realize constant current by using constant pressure chip.
Moreover, the size of output current can flexibly be set, flexibility is good.It is better than original use constant current chip application effect.Practice
Show, charging circuit control effect of the invention is protruded, and cost is significantly reduced.