CN201307776Y

CN201307776Y - Intelligent four-section charger

Info

Publication number: CN201307776Y
Application number: CNU2008201613883U
Authority: CN
Inventors: 陆大威; 李净玉; 孙金水; 邹龙; 徐正源
Original assignee: NANJING SHUOGUAN TECHNOLOGY INDUSTRY Co Ltd
Current assignee: NANJING SHUOGUAN TECHNOLOGY INDUSTRY Co Ltd
Priority date: 2008-11-19
Filing date: 2008-11-19
Publication date: 2009-09-09
Anticipated expiration: 2018-11-19

Abstract

An intelligent four-section charger is characterized by the inclusion of a low-frequency filter circuit, a high-frequency filter circuit, a switch inverter circuit, a high-frequency transformer, a high-frequency rectifier filter and a feedback control circuit, wherein the low-frequency filter circuit and the high-frequency rectifier filter covert the alternating current (AC) input to the direct current (DC) input and output the AC to the switch inverter circuit; the feedback control circuit controls the switch inverter circuit to convert the DC to high-frequency low-voltage current through the high-frequency transformer; the required DC is output by the high-frequency rectifier filter; and the feedback control circuit samples the variation of the DC output by the high-frequency rectifier filter and controls the switch inverter circuit according to the process variation. The charger prolongs the service life of storage batteries.

Description

Intelligence four-part form charger

Technical field

The utility model relates to the switch power technology field, specifically is a kind of intelligent four-part form charger that is used to charge a battery, and it is specially adapted to the charging of electric vehicle storage battery.

Background technology

Got more and more as powered device with electric energy at present, for example UPS, electric automobile, vehicle using motor etc.Because the accident that storage battery causes also becomes more and more, a lot of accidents all because of charger can not be fire-retardant, non-refractory, not anti-low cold, be not with protection, reason such as overcharge and cause.And because of the deficiency of charger, storage battery more or less exists to be owed to fill, and overcharges combined symptoms such as dehydration, sulfuration, unbalance, thermal runaway, influences the life of storage battery.Use in the market many three-step chargers exist equally overcharge, sulfuration, combined symptoms such as unbalance, make that the battery pack cycle-index is not high, the life-span is low, pollute and waste.

Summary of the invention

In order to solve the above-mentioned problems in the prior art, the utility model proposes a kind of intelligent four-part form charger, concrete technical scheme is as follows:

A kind of intelligent four-part form charger comprises low-frequency filter circuit, filtering high-frequency rectifier device, switching inverter circuit, high frequency transformer, filtering high-frequency rectifier, feedback control circuit; Low frequency filtering, filtering high-frequency rectifier device become exchange input into direct current, export to switching inverter circuit; Simultaneously described direct current is transformed into high frequency low voltage through high frequency transformer by feedback control circuit control switch inverter circuit; Export required direct current through the filtering high-frequency rectifier device again; Feedback control circuit is sampled to the variation of filtering high-frequency rectifier device output DC, and changes according to this process and to come the control switch inverter circuit.

This charger also comprises direct current sampling testing circuit, and the input of this direct current sampling testing circuit connects filtering high-frequency rectifier device output, and the output of this direct current sampling testing circuit connects the input of feedback control circuit.

This charger also comprises switching relay J2; The secondary main circuit of high frequency transformer inserts the Chang Kaiduan of this relay J 2; Feedback control circuit connects the adhesive of control relay J2; The mid point of relay J 2 connects the input of feedback control circuit.

This charger also comprises relay J 1; The adhesive of feedback control circuit control relay J1; The mid point of this relay J 1 connects the output of filtering high-frequency rectifier device, and the normal-closed end of this relay J 1 connects the elementary of high frequency transformer.The Chang Kaiduan of relay J 1 is connected with LED; The normal-closed end of switching relay J2 is connected with LED.

The circuit that it is core that described switching inverter circuit adopts with PWM controller and the incorporate integrated control chip of MOSFET power switch.

The input of this charger also is provided with thermistor.

The filtering high-frequency rectifier device output direct current of this charger is to charge in batteries, and feedback control circuit is exported in the variation of direct current sampling testing circuit tracking charging process, remove to change the control switch inverter circuit by feedback control circuit according to this process variation, can suppress the variation of direct current output, reach the purpose of intelligent charge.The utility model is simple in structure, and is of many uses.Work charging full positive pulse charging, devulcanization reduces the storage battery dehydration, controls overall process automatically, is full of the back autostop, and is anti-overcharge.The utility model is simple in structure, of many uses.By feedback control circuit is core, and collection dodges and to fill, and perseverance is filled, and tiny stream fills, brought offline four-part form way to manage is in one.Through test, this charger can make the batteries cycle-index substantially exceed charger of the prior art to the battery charging number of times, has improved the life of storage battery.

Description of drawings

Fig. 1 is the utility model block diagram.

Fig. 2 is the electrical schematic diagram of the utility model control circuit.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

A kind of intelligent four-part form charger comprises low-frequency filter circuit, filtering high-frequency rectifier device, switching inverter circuit, high frequency transformer, filtering high-frequency rectifier, feedback control circuit; Low frequency filtering, filtering high-frequency rectifier device become exchange input into direct current, export to switching inverter circuit; Simultaneously described direct current is transformed into high frequency low voltage through high frequency transformer by feedback control circuit control switch inverter circuit; Export required direct current through the filtering high-frequency rectifier device again; Feedback control circuit is sampled to the variation of filtering high-frequency rectifier device output DC, and changes according to this process and to come the control switch inverter circuit.This charger also comprises direct current sampling testing circuit, and the input of this direct current sampling testing circuit connects filtering high-frequency rectifier device output, and the output of this direct current sampling testing circuit connects the input of feedback control circuit.This charger also comprises switching relay J2; The secondary main circuit of high frequency transformer inserts the Chang Kaiduan of this relay J 2; Feedback control circuit connects the adhesive of control relay J2; The mid point of relay J 2 connects the input of feedback control circuit.This charger also comprises relay J 1; The adhesive of feedback control circuit control relay J1; The mid point of this relay J 1 connects the output of filtering high-frequency rectifier device, and the normal-closed end of this relay J 1 connects the elementary of high frequency transformer.The Chang Kaiduan of relay J 1 is connected with LED; The normal-closed end of switching relay J2 is connected with LED.The circuit that it is core that described switching inverter circuit adopts with PWM controller and the incorporate integrated control chip of MOSFET power switch.Input at described charger also is provided with thermistor.

As shown in Figure 2, in this example, charger is made up of 2 core plug incoming lines, charger body, 3 core socket output lines, three parts.Wherein 2 core plug incoming lines link to each other with electric main; 3 core socket output lines link to each other with storage battery.

Low frequency filtering 1, filtering high-frequency rectifier device 2 are made of thermistor RT, rectifier bridge DD, filter capacitor E1, suction cutting edge of a knife or a sword resistance R 2 capacitor C 3, fast recovery diode D1, relay J 1.Civil power is gone into low frequency filtering 1 by importing 2 core sockets, through filtering high-frequency rectifier device 2 output high voltage direct current, to switching inverter circuit 3.Switching inverter circuit 3 is by present advanced person's PWM controller and the incorporate integrated control chip Q3TOP227 of MOSFET power switch, resistance R 4, and electric capacity E2 constitutes.IC feedback control circuit 7 is be the circuit of core with U2 (PIC12C5 series unit), and U2 gathers the control end that output changes following feedback control Q3, thereby suppresses or compensation is exported.The output of switching inverter circuit 3 connects the elementary of high frequency transformer 5, the secondary output 3 tunnel of high frequency transformer.One the tunnel is main circuit, is made up of fast recovery diode DT, filter capacitor E1 ', resistance R 1 ', voltage-stabiliser tube Z1 ', resistance R 2 ', R3 ', R12 ', voltage-stabiliser tube D4 '; The second the tunnel is auxiliary power circuit, is made up of rectifier diode D ', filter capacitor E2 ', E3 ', voltage-stabiliser tube V1 ', resistance R 11 ' and charging indicator light, and this partial circuit is power supplies such as internal control circuit and electric fan; Third Road also is that accessory power supply is the Q3 power supply, is made up of diode D2, capacitor C 4.The Chang Kaiduan of high frequency transformer level time main circuit cut-in relay J2, the mid point of J2 is input to 2 pin of U2, detects battery status when U2 follows the tracks of, when storage battery fills when full, the adhesive of the 7 pin output low level J1 of U2, charger is disembarked, and U2 can realize various protections simultaneously.5 pin of U2 detect current tracking feedback output 1 foot control system integrated power chip Q3.3,6 pin of U2 connect the line bag of J2 simultaneously, and the adhesive of control J2 realizes the reverse connecting protection function.Resistance R 20 ', GZ indicator light are the reversal connection indication.

Because realizing the program of the method described in this example in the single-chip microcomputer is that prior art those skilled in the art ratio is easier to programming, and is not the utility model object of protection, so be not described further at this.

Claims

1, a kind of intelligent four-part form charger is characterized in that comprising low-frequency filter circuit, filtering high-frequency rectifier device, switching inverter circuit, high frequency transformer, filtering high-frequency rectifier, feedback control circuit; Low frequency filtering, filtering high-frequency rectifier device become exchange input into direct current, export to switching inverter circuit; Simultaneously described direct current is transformed into high frequency low voltage through high frequency transformer by feedback control circuit control switch inverter circuit; Export required direct current through the filtering high-frequency rectifier device again; Feedback control circuit is sampled to the variation of filtering high-frequency rectifier device output DC, and changes according to this process and to come the control switch inverter circuit.

2, intelligent four-part form charger according to claim 1, it is characterized in that also comprising direct current sampling testing circuit, the input of this direct current sampling testing circuit connects filtering high-frequency rectifier device output, and the output of this direct current sampling testing circuit connects the input of feedback control circuit.

3, intelligent four-part form charger according to claim 1 and 2 is characterized in that also comprising switching relay J2; The secondary main circuit of high frequency transformer inserts the Chang Kaiduan of this relay J 2; Feedback control circuit connects the adhesive of control relay J2; The mid point of relay J 2 connects the input of feedback control circuit.

4, intelligent four-part form charger according to claim 3 is characterized in that also comprising relay J 1; The adhesive of feedback control circuit control relay J1; The mid point of this relay J 1 connects the output of filtering high-frequency rectifier device, and the normal-closed end of this relay J 1 connects the elementary of high frequency transformer.

5, intelligent four-part form charger according to claim 4 is characterized in that the Chang Kaiduan of relay J 1 is connected with LED; The normal-closed end of switching relay J2 is connected with LED.

6, intelligent four-part form charger according to claim 1 is characterized in that the circuit that described switching inverter circuit employing is a core with PWM controller and the incorporate integrated control chip of MOSFET power switch.

7, intelligent four-part form charger according to claim 1 is characterized in that also being provided with thermistor at the input of described charger.