CN205724989U - Charge-discharge control system is all pressed in super capacitor group energy storage - Google Patents

Abstract

This utility model belongs to power system energy storage and controls technical field, particularly relate to a kind of super capacitor group energy storage and all press charge-discharge control system, including: microprocessor control module 1, switch drive module 3, super capacitor switch array module 4, super capacitor array module 5, DC charging power supply module 7 are sequentially connected, super capacitor array module 5, super capacitor group measurement module 2, SOC module 8, human-computer interaction module 6, microprocessor control module 1 are sequentially connected, and super capacitor group measurement module 2 is connected with microprocessor control module 1 respectively with SOC module 8.This utility model uses the information that sensor obtains, and ensures that whole bank of super capacitors energy-storage system is operated in optimum state by control strategy, makes security of system discharge and recharge.This utility model utility model has reliably, and simply, efficiently, quickly, the advantage such as energy-conservation, can be that the maintenance of super capacitor array provides reference frame simultaneously.

Description

Charge-discharge control system is all pressed in super capacitor group energy storage

Technical field

This utility model belongs to power system energy storage and controls technical field, particularly relates to a kind of super capacitor group storage Can all press charge-discharge control system.

Background technology

Ultracapacitor is that a kind of novel electric power energy storage device occurs in the beginning of this century.The electric capacity of ultracapacitor Amount greatly, up to thousands of farads, not only has the high discharge power advantage of electrostatic condenser but also has as battery There is relatively large charge storage capacity.Additionally, ultracapacitor also has, capacity configuration is flexible, be easily achieved module Change design, service life cycle length, operating temperature range width, environmental friendliness, the advantage such as non-maintaining so that it is It is more suitable for the working environment of harshness.

Existing charge and discharge system is the highest due to ultracapacitor monomer terminal voltage, comes for large power energy storage system Say, in order to meet the needs of capacity and electric pressure, be usually by the series connection of multiple ultracapacitors and parallel connection Compound mode works, and they are charged as an entirety, have same charging current.In series connection group In part design, owing to manufacturing process is uneven with material, it is relatively big, even if joining to there is dispersion in ultracapacitor Through strict conformity classification during group, but its deviation is the most inevitable.In order to avoid overcharging, usually holding Measuring after little electric capacity is full of and i.e. stop charging, the stored energy capacitance of such capacitance group can not get maximum utilization；Equally, Put in order to avoid crossing during electric discharge, maximum can not utilize the capacity of Capacitor banks.Existing voltage balance circuit Type is mainly divided into energy consumption type and non-energy consumption type.

In a word, in place of the deficiencies in the prior art being: complicated poor practicability, poor reliability, energy consumption is high, efficiency Low etc..These shortcomings constrain promoting the use of of super capacitor.

Utility model content

For the problems such as super capacitor monomer volume error is bigger present in prior art, this utility model carries Go out a kind of super capacitor group energy storage and all press charge-discharge control system and state-of-charge method of estimation.

Control system includes: microprocessor control module 1, super capacitor group measurement module 2, switch drive mould Block 3, super capacitor switch array module 4, super capacitor array module 5, human-computer interaction module 6, direct current Charging power modules 7 and SOC module 8；

Wherein, microprocessor control module 1, switch drive module 3, super capacitor switch array module 4, Super capacitor array module 5, DC charging power supply module 7 are sequentially connected, super capacitor array module 5, super Level capacitance group measurement module 2, SOC module 8, human-computer interaction module 6, microprocessor control module 1 are successively Being connected, super capacitor group measurement module 2 is connected with microprocessor control module 1 respectively with SOC module 8.

Described super capacitor switch array module 4 is made up of 2m switch, described super capacitor array module 5 Be one group by n ultracapacitor monomer parallel connection, after each group of super capacitor and a switch series again with another Switch in parallel one unit of composition, total m unit.

Described super capacitor component is p submodule, passes through electricity in module in submodule and between submodule respectively Pressure equalizing circuit carries out electric voltage equalization with intermodule voltage balance circuit simultaneously.

Described microprocessor control module 1 inputs according to super capacitor group measurement module 2 and SOC module 8 Information, completes to control the algorithm of super state, outputs control signals to switch drive module 3 and drive super electricity Hold switch array module 4, it is achieved all pressures charge and discharge control to bank of super capacitors；

Described super capacitor group measurement module 2 is used for the super voltage of Real-time Collection and the temperature number of all monomers According to and deliver to microprocessor control module 1；

The input of described switch drive module 3 is connected with the control output end of microprocessor control module 1； By microprocessor module produce control signal be converted into switch arrays can signal, control switch arrays；

Described human-computer interaction module 6 includes keyboard, display and translation interface, be used for carrying out parameter setting, The data of real-time display system and state, it is achieved system and the serial communication of host computer；

Described super capacitor switch array module 4 by control switch combination realize by super seal in circuit and from Circuit excises；

Monomer super capacitor in described super capacitor array module 5 can be concrete single super capacitor, Can also be through and go here and there combination after super；

Described DC charging power supply module 7 is connected with super capacitor array module 5, uses as super during charging Electric capacity provides charging current；

Described SOC module 8 is state-of-charge estimation module, according to super capacitor group measurement module 2 and Wei Chu The information of reason device control module 1 input, is estimated the state-of-charge of system by algorithm；Estimation is tied Fruit passes to microprocessor control module 1 and human-computer interaction module 6.

Described super capacitor group measurement module 2 includes for the A/D converter of analog digital conversion with lower sensor:

Temperature sensor, is arranged on each super capacitor shell, for measuring the temperature of super capacitor；

Voltage sensor, is parallel to the two ends of each super capacitor group, often organizes super capacitor for measuring Voltage；

Current sensor, is series at bank of super capacitors, electric current during for measuring charging and discharging.

Compared with prior art, the beneficial effects of the utility model are:

1 passes through voltage sensor and temperature sensor, it is possible to find the faults such as short circuit；After finding fault, pass through Switch combination can be excised fault or notify that staff processes by the setting scheme of anticipating.

2 pass through man-machine interaction mode, can set the discharge and recharge time, carry out auto charge and discharge.

3 pass through parameters optimization, are effectively reduced on-off times, reduce system energy consumption loss.

4 can make the dispersion of Capacitor banks reduce, and make full use of monomer capacity, improve bank of super capacitors Reliability.

5, by analyzing on-off times, can find out the group that dispersion is big, carry for replacing discrete bigger capacitance group For foundation.

6 according to magnitude of voltage and the total capacitance of the Capacitor banks of normal work, can be to the energy storage system being under this state The electric energy total amount of system is estimated.

7 based on theory of probability, and the biggest effect of scale is the best, it is adaptable to large-scale super capacitor energy-storage.

8 use SOC module, when initial value is not the most accurate, and still can lotus to super capacitor in real time Electricity condition is estimated.

Accompanying drawing explanation

Fig. 1 is control system composition frame chart of the present utility model；

Fig. 2 is that bank of super capacitors tapping voltage equalizes overall structure；

Fig. 3 is super capacitor switch array module and the constitutional diagram of super capacitor array module；

Fig. 4 is Hall voltage transformer schematic diagram；

Fig. 5 is photoelectric isolating circuit；

Fig. 6 is MOSFET drive circuit.

Detailed description of the invention

Below in conjunction with the accompanying drawings, embodiment is elaborated.

This utility model provides a kind of bank of super capacitors energy storage and all presses charge-discharge control system, such as Fig. 1 institute Show, microprocessor control module 1, switch drive module 3, super capacitor switch array module 4, super electricity Hold array module 5, DC charging power supply module 7 is sequentially connected, super capacitor array module 5, super capacitor Group measurement module 2, SOC module 8, human-computer interaction module 6, microprocessor control module 1 are sequentially connected, Super capacitor group measurement module 2 is connected with microprocessor control module 1 respectively with SOC module 8.

Fig. 2 is that bank of super capacitors tapping voltage equalizes overall structure, and integral capacitor device is divided in figure p Submodule, in work process, carries out electric voltage equalization simultaneously in intermodule, module.

Fig. 3 is super capacitor switch array module and the constitutional diagram of super capacitor array module, and in figure, array is adopted With 2m N-channel MOS FET controllable type switch, meanwhile, n ultracapacitor monomer parallel connection is one Group, often switchs also with another after group super capacitor and a switch series, such n ultracapacitor and two Switch constitutes a unit.Selectively cut-off control by switch, can make often to organize at ultracapacitor In two states: seal in main circuit charging and disconnecting with main circuit and unsettled do not charge.As it is shown on figure 3, for 1st group of breaker in middle S₁And S₁', there are 4 kinds of combinations of states: S₁Disconnect S₁' disconnect, S₁Disconnect S₁' Guan Bi, S₁Guan Bi S₁' disconnect, S₁Guan Bi S₁' Guan Bi.Work as S₁Disconnect S₁' Guan Bi time, bank of super capacitors C₁* Seal in main circuit, can be to Capacitor banks discharge and recharge；Work as S₁Guan Bi S₁' disconnect time, bank of super capacitors C₁* Disconnect with main circuit, do not carry out discharge and recharge.Forbid that remaining two kinds of situations occur by logic circuit.Switch S Side parallel diode can prevent from switching high pressure.Voltage sensor is parallel to the two ends of Capacitor banks, is used for Measure the voltage often organizing super capacitor；Temperature sensor is arranged on each super capacitor shell.

Fig. 4 is Hall voltage transformer schematic diagram, the Hall voltage sensor using model to be HVS5-25A Measure the terminal voltage of each ultracapacitor monomer, configure former margin leakage resistance:

R₁=U₁/I_P-R_in

R in formula₁For former margin leakage resistance, U₁Voltage, I is measured for maximum_PFor the specified input current of transformer, R_inFor transformer former limit internal resistance.

Owing to this Hall element requires that the specified input current in former limit is about 5mA, measure maximum voltage U₁=5V, therefore choose former limit series resistance R₁For:

R₁=5V/5mA-650=350

According to actual resistance, take R₁=360 Ω, choosing output voltage is U_o=5V, further according to turn ratio, There is a formula:

$\frac{I_{in}}{I_{out}}=\frac{U_1}{R_1+R_{in}}:\frac{U_o}{R_m}=5:25$

: R_m=200 Ω

Therefore output voltage U_oAnd the actual relationship between tested voltage U1 is:

$\frac{U_o}{U_1}=\frac{5R_m}{R_1+R_{in}}\≈1:1$

Fig. 5 is photoelectric isolating circuit, the two-way photoelectric coupling chip using model to be TLP521-2, internal envelope , independence, physical characteristic on all four optocoupler full symmetric equipped with two-way.When Light-Emitting Diode two ends added with When adding forward voltage, diode current flow is the most luminous, and the photosurface of phototriode is irradiated by light, if Plus forward voltage between emitting stage and the colelctor electrode of audion, then audion will have collector current to export.

Fig. 6 is MOSFET drive circuit, select TLP250 main circuit and drive circuit are carried out photoelectricity every From, No. 3 pins connect the optically isolated digital output mouth of slave computer.No. 2 pins by current-limiting resistance R1 and Power interface on slave computer is connected.No. 6 pins and No. 5 pins are respectively by current-limiting resistance R2's and 10V Stabilivolt D is connected to grid and the source electrode of MOSFET.The effect of stabilivolt is, when low level inputs, The gate source voltage of MOSFET will be clamped the breakdown voltage (-10V) at stabilivolt, can make MOSFET Stable shutoff.

This embodiment is only this utility model preferably detailed description of the invention, but protection domain of the present utility model It is not limited thereto, the technical scope that any those familiar with the art discloses at this utility model In, the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.Therefore, Protection domain of the present utility model should be as the criterion with scope of the claims.

Claims (4)

1. charge-discharge control system is all pressed in a super capacitor group energy storage, it is characterised in that including: micro-process Device control module (1), super capacitor group measurement module (2), switch drive module (3), super capacitor leave Close array module (4), super capacitor array module (5), human-computer interaction module (6), DC charging power supply Module (7) and SOC module (8)；

Wherein, microprocessor control module (1), switch drive module (3), super capacitor switch arrays mould Block (4), super capacitor array module (5), DC charging power supply module (7) are sequentially connected, super capacitor Array module (5), super capacitor group measurement module (2), SOC module (8), human-computer interaction module (6), Microprocessor control module (1) is sequentially connected, super capacitor group measurement module (2) and SOC module (8) It is connected with microprocessor control module (1) respectively.

System the most according to claim 1, it is characterised in that described super capacitor switch array module (4) Being made up of 2m switch, described super capacitor array module (5) by n ultracapacitor monomer parallel connection is One group, after each group of super capacitor and a switch series, form a unit, total m again with another switch in parallel Individual unit；

Described super capacitor component is p submodule, passes through electricity in module in submodule and between submodule respectively Pressure equalizing circuit carries out electric voltage equalization with intermodule voltage balance circuit simultaneously.

System the most according to claim 1, it is characterised in that described microprocessor control module (1) The information inputted according to super capacitor group measurement module (2) and SOC module (8), completes to control super shape The algorithm of state, outputs control signals to switch drive module (3) and drives super capacitor switch array module (4), Realize all pressures charge and discharge control to bank of super capacitors；

Described super capacitor group measurement module (2) is used for the super voltage of Real-time Collection and the temperature of all monomers Data also deliver to microprocessor control module (1)；

The input of described switch drive module (3) and the control output end of microprocessor control module (1) It is connected；By microprocessor module produce control signal be converted into switch arrays can signal, control switch Array；

Described human-computer interaction module (6) includes keyboard, display and translation interface, be used for carrying out parameter setting, The data of real-time display system and state, it is achieved system and the serial communication of host computer；

Described super capacitor switch array module (4) by control switch combination realize by super seal in circuit and Excise from circuit；

Monomer super capacitor in described super capacitor array module (5) can be concrete single super capacitor, Can also be through and go here and there combination after super；

Described DC charging power supply module (7) is connected with super capacitor array module (5), uses during charging Charging current is provided for super capacitor；

Described SOC module (8) is state-of-charge estimation module, according to super capacitor group measurement module (2) The information inputted with microprocessor control module (1), is estimated the state-of-charge of system by algorithm； Estimation result is passed to microprocessor control module (1) and human-computer interaction module (6).

System the most according to claim 1, it is characterised in that described super capacitor group measurement module (2) Including the A/D converter for analog digital conversion with lower sensor:

Temperature sensor, is arranged on each super capacitor shell, for measuring the temperature of super capacitor；

Voltage sensor, is parallel to the two ends of each super capacitor group, often organizes super capacitor for measuring Voltage；

Current sensor, is series at bank of super capacitors, electric current during for measuring charging and discharging.