CN201898368U

CN201898368U - Intelligent charge-discharge control circuit

Info

Publication number: CN201898368U
Application number: CN2010206761408U
Authority: CN
Inventors: 朱江涛; 龚鑫祥
Original assignee: XINXIANG TAIHANG ETON CONTROLLER EQUIPMENT CO Ltd
Current assignee: XINXIANG TAIHANG ETON CONTROLLER EQUIPMENT CO Ltd
Priority date: 2010-12-23
Filing date: 2010-12-23
Publication date: 2011-07-13
Anticipated expiration: 2020-12-23

Abstract

The utility model relates to an intelligent charge-discharge control circuit. A three-phase AC power supply is connected with an AC contactor via main AC fuses and then connected with a main transformer TM, and is connected with a three-phase full-bridge controllable silicon circuit for converting AC into DC after voltage transformation; the DC is connected with a DC contactor via an inductor and then connected with a DC fuse and a battery via the output end of the DC contactor; current outputted by the battery is connected with two normally open contacts of the DC contactor KM2 via the DC fuse; when the two normally open contacts of the DC contactor KM2 are closed, the DC is connected with the positive electrode and the negative electrode of the three-phase full-bridge controllable silicon circuit via the inductor L; after being stepped-up by the main transformer, the three-phase AC is connected with the AC contactor KM and then connected with a circuit breaker via the three main AC fuses; a voltage acquisition wire of a voltage transducer is connected with the DC fuse for connecting voltage signals onto a PLC; and a diverter is serially connected between the DC contactor and a controllable silicon combination module and then connected with the PLC via the output end of the divider. Therefore, the intelligent charge-discharge control circuit provided by the utility model is fully automatic and intelligent, can automatically realize charging modes such as CC (Constant Current) voltage limitation, CV (Constant Voltage) current limitation and step-down trickle, as well as CC discharge, the charging efficiency is improved by 15%, and the average service life of the battery is prolonged by 6-8 months.

Description

The intelligent recharge and discharge control circuit

Technical field

The utility model relates to a kind of common railway train groups and EMU, the daily charge and discharge maintenance of on-vehicle battery of city rail locomotive and intelligent recharge and discharge control circuit of detection of being applied to, also be applied to the quick charge and the maintenance of city electric car and industrial AGV Vehicular battery, the daily charge maintenance of all types of batteries in base station of the electric power power transmission and transformation system and the communications industry and battery capacity check and correction.

Background technology

At present, what control circuit generally adopted to battery discharge (inversion) time is to pass through conductive discharge, can produce a large amount of heat like this, not only electric energy wastes, and cause hidden danger, if adopt the active inversion discharge technology during discharge, make electric energy be able to feedback grid, not only green energy conservation but also do not have a large amount of heats and produce can also eliminate safe hidden trouble simultaneously.Present most of producers all take the two stage charging modes (constant current, constant voltage mode) that performance falls behind simultaneously, and charge efficiency and battery life are all lower.

Summary of the invention

The purpose of this utility model be to overcome the deficiencies in the prior art and provide a kind of can saves energy, improve the intelligent recharge and discharge control circuit in charge efficiency and battery useful life.

The purpose of this utility model is achieved in that three-phase alternating-current supply inserts the input side of circuit breaker Q F, the outlet side of circuit breaker Q F connects three main AC fuse FU1 respectively, FU2, FU3, by three main AC fuse FU1, FU2, FU3 connects three normal battles of the input utmost point of A.C. contactor KM again, after it is closed, draw the primary side that the back connects main transformer TM by the outlet side of A.C. contactor KM, insert the three phase full bridge controllable silicon circuit that has overvoltage protection respectively by TM level of main transformer after the voltage of transformation, convert alternating current to direct current by the three phase full bridge controllable silicon circuit, two normal battles of the input utmost point by inserting D.C. contactor KM1 after the further filtering alternating component of inductance L again, after it is closed, be connected to dc fuse FU4 by output, FU5, connect the battery two ends then respectively, this moment, the normally opened contact of KM2 disconnected not participation device work all the time, more than was the charging process of equipment; The battery output current is connected to two normally opened contacts of D.C. contactor KM2 during discharge process by dc fuse FU4, FU5, after its closure, direct current is received the anode and the cathode side of three phase full bridge controllable silicon circuit by inductance L, finish direct current by this circuit and become the inversion process that exchanges, be connected to three normal battles of A.C. contactor KM after again three-phase alternating current being boosted by main transformer this moment, three-phase current connects circuit breaker Q F through three main AC fuse FU1, FU2, FU3 respectively after it is closed, feeds back to electrical network and finishes active inversion work; The voltage acquisition line of voltage transmitter SEN1 is connected on the input side of dc fuse FU4, FU5 respectively, to be connected on the PLC after the voltage signal conversion of gathering, shunt FL is serially connected between the common anode of one of them normal battle of D.C. contactor KM1 and Group of Silicon Controlled Rectifier compound module, the current signal of gathering is transformed into the input that voltage signal is delivered to current transducer SEN2, connects PLC by output again.

The utlity model has full-automatic and intelligent characteristics, can really realize unattended operation, equipment can be finished the constant current pressure limiting automatically, constant voltage and current limiting, charge mode and constant-current discharges such as step-down trickle, can monitor current cell voltage in real time, can carry out the active inversion discharge during discharge, can carry out storage and printing automatically during work, can safeguard multiple storage battery. adopt extensive program integrated circuit able to programme (PLC) to be control centre, be equipped with the large-sized solor touch-screen as man-machine interface, use the operation guide interface of hommization, be different from the top knob of other producer's operations to One's name is legion, button, indicator light, devices such as switch, the real automation unattended operation mode of operation that realizes needs 2～3 people by an original workflow, is reduced to 1～2 people.Take advanced syllogic charging modes, stage constant current pressure limiting, the two-stage constant voltage and current limiting, therefore three stage constant voltage streams improve 15% from charge efficiency, and battery life on average improved 6～8 months.

Description of drawings

Fig. 1 is a circuit connecting relation schematic diagram of the present utility model.

Embodiment

As shown in Figure 1, a kind of intelligent recharge and discharge control circuit, it is characterized in that: three-phase alternating-current supply inserts the input side of circuit breaker Q F, the outlet side of circuit breaker Q F connects three main AC fuse FU1 respectively, FU2, FU3, by three main AC fuse FU1, FU2, FU3 connects three normal battles of the input utmost point of A.C. contactor KM again, after it is closed, draw the primary side that the back connects main transformer TM by the outlet side of A.C. contactor KM, insert the three phase full bridge controllable silicon circuit that has overvoltage protection respectively by TM level of main transformer after the voltage of transformation, convert alternating current to direct current by the three phase full bridge controllable silicon circuit, two normal battles of the input utmost point by inserting D.C. contactor KM1 after the further filtering alternating component of inductance L again, after it is closed, be connected to dc fuse FU4 by output, FU5, connect the battery two ends then respectively, this moment, the normally opened contact of KM2 disconnected not participation device work all the time, more than was the charging process of equipment; The battery output current is connected to two normally opened contacts of D.C. contactor KM2 during discharge process by dc fuse FU4, FU5, after its closure, direct current is received the anode and the cathode side of three phase full bridge controllable silicon circuit by inductance L, finish direct current by this circuit and become the inversion process that exchanges, be connected to three normal battles of A.C. contactor KM after again three-phase alternating current being boosted by main transformer this moment, three-phase current connects circuit breaker Q F through three main AC fuse FU1, FU2, FU3 respectively after it is closed, feeds back to electrical network and finishes active inversion work; The voltage acquisition line of voltage transmitter SEN1 is connected on the input side of dc fuse FU4, FU5 respectively, to be connected on the PLC after the voltage signal conversion of gathering, shunt FL is serially connected between the common anode of one of them normal battle of D.C. contactor KM1 and Group of Silicon Controlled Rectifier compound module, the current signal of gathering is transformed into the input that voltage signal is delivered to current transducer SEN2, connects PLC by output again.

1, in trigger waveform control to key, adopt the missing pulse automatic compensatory technique, and accurately the control impuls symmetry makes it less than 0.5 °, pulse duration is 12 °, the rectifying and voltage-stabilizing precision can reach 0.4, rectification precision of steady current≤1, and ripple coefficient is lower, operating efficiency surpasses 17% of national standard, is better than traditional product greatly.

2, circuits for triggering adopt digital trigger, and the phase sequence self-checking circuit need not adjusted and have to six tunnel pulse symmetries, and it blocks trigger impulse automatically when faults such as generation misphase, the phase failure, sends sound and light signal and reports to the police.Trigger board itself has protection and soft start functions such as overvoltage, overcurrent, and functional reliability is much better than traditional product.

3, equipment adopts digital spacing technology when rectification and inverter operation.Through optimizing, designed thyristor angle of flow α angle and automatically operated between 0 °-150 °, the β angle is operated between 30 °-90 ° during inversion, need not artificial adjusting, effectively prevents from inverter failure to have reduced equipment failure rate, has improved fail safe.

Can be when 4, discharging with storage battery dump energy feedback grid, electric energy can be recycled, and energy savings has changed the resistance discharging mode that traditional discharge is adopted, and has eliminated defectives such as caloric value is big, fail safe is low.

The utility model is applied to the daily charge and discharge maintenance of on-vehicle battery and the detection of common railway train groups and novel high speed motor train unit, city rail (subway) locomotive, the quick charge of city electric car and industrial AGV Vehicular battery and maintenance, the daily charge maintenance of all types of batteries in base station of the electric power power transmission and transformation system and the communications industry and battery capacity check and correction.At first, from the green energy conservation aspect of product relatively, adopted advanced digit pulse to trigger commutation technique, power factor is by general 70% being increased to more than 80% of rival.Secondly, adopt the active inversion discharge technology during discharge, make electric energy be able to feedback grid, not only green energy conservation but also do not have a large amount of heats and produce had been eliminated potential safety hazard simultaneously.

Claims

1. intelligent recharge and discharge control circuit, it is characterized in that: three-phase alternating-current supply inserts the input side of circuit breaker Q F, the outlet side of circuit breaker Q F connects three main AC fuse FU1 respectively, FU2, FU3, by three main AC fuse FU1, FU2, FU3 connects three normal battles of the input utmost point of A.C. contactor KM again, after it is closed, draw the primary side that the back connects main transformer TM by the outlet side of A.C. contactor KM, insert the three phase full bridge controllable silicon circuit that has overvoltage protection respectively by TM level of main transformer after the voltage of transformation, convert alternating current to direct current by the three phase full bridge controllable silicon circuit, two normal battles of the input utmost point by inserting D.C. contactor KM1 after the further filtering alternating component of inductance L again, after it is closed, be connected to dc fuse FU4 by output, FU5, connect the battery two ends then respectively, this moment, the normally opened contact of KM2 disconnected not participation device work all the time, more than was the charging process of equipment; The battery output current is connected to two normally opened contacts of D.C. contactor KM2 during discharge process by dc fuse FU4, FU5, after its closure, direct current is received the anode and the cathode side of three phase full bridge controllable silicon circuit by inductance L, finish direct current by this circuit and become the inversion process that exchanges, be connected to three normal battles of A.C. contactor KM after again three-phase alternating current being boosted by main transformer this moment, three-phase current connects circuit breaker Q F through three main AC fuse FU1, FU2, FU3 respectively after it is closed, feeds back to electrical network and finishes active inversion work; The voltage acquisition line of voltage transmitter SEN1 is connected on the input side of dc fuse FU4, FU5 respectively, to be connected on the PLC after the voltage signal conversion of gathering, shunt FL is serially connected between the common anode of one of them normal battle of D.C. contactor KM1 and Group of Silicon Controlled Rectifier compound module, the current signal of gathering is transformed into the input that voltage signal is delivered to current transducer SEN2, connects PLC by output again.