CN201315498Y

CN201315498Y - Automatic charger stopping module with starting button

Info

Publication number: CN201315498Y
Application number: CNU200820178348XU
Authority: CN
Inventors: 康之歆
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-10
Filing date: 2008-11-10
Publication date: 2009-09-23
Anticipated expiration: 2018-11-10

Abstract

The utility model relates to an automatic charger stopping module with a starting button, which belongs to the technical field of industrial automatic control. The module comprises a starting button QA and a capacitor C1. When the trickle charge indicating lamp of the charger is lit up, the voltage thereof is applied to the anode of the C1 via a capacitor R1 and a capacitor R2; with the rise of the voltage of the C1, when the potential at the second pin and the sixth pin of the NE555 time base circuit connected on the anode of the C1 rises to 2/3VCC (the working voltage of the time base circuit), the output at the third pin is changed into low level, a switching tube V1 is stopped because loosing the base voltage and the emitter voltage, the coil of an executing element relay CJ looses power, the normally open contact CJ-1 is broken up, and the charger is stopped. The working voltage of the relay CJ comes from a battery cell, on which an anti-reverse diode D1 and a divider resistor R6 are connected, and QA1 is an under-voltage starting switch. The automatic charger stopping module is mainly used on various chargers for realizing automatic stop in case of full charge by physically cut off the alternating current and direct current charging circuit through the relay under the condition of unattended operation, thereby being convenient for use and saving the energy resource.

Description

The charger automatic stop module of tape starting button

Technical field

The utility model relates to a kind of charger automatic stop module of tape starting button, belongs to technical field of industrial automatic control.

Background technology

The existing charger that is widely used is work like this; With standard syllogic electric car charger for example: serve as protection charger and storage battery; plug the 220V ac power plug again after connecting the storage battery plug in order earlier; red charging indicator light lights; charger begins charging; process constant current, two stages of constant voltage enter the trickle charge stage after a few hours; this moment, red charging indicator light extinguished; green trickle charge indicator light lights; also need after 1 after 2 hours according to charging ambient temperature, manually extract the order of storage battery plug again and finish charging work by extracting the 220V ac power plug earlier.Analyze prior art, exist not enough as follows: 1, charger has the proper operation order that needs the user to pay special attention to, otherwise fragile charger.2, charger enters difficult assurance of time after the trickle charge, the someone monitors in the actual life on duty difficulty and accomplishes continuously, has pulled out early to be not fully filled, and has pulled out the waste electric energy late, the discreteness of product quality shortens charger useful life, owing to also can cause storage battery to be scrapped because of overcharging sometimes.

Summary of the invention

The technical problems to be solved in the utility model is: at the deficiency of prior art existence, a kind of charger automatic stop module of tape starting button is proposed, need not former charger charge function and principle are redesigned, directly in producing, charger integrates in the circuit board with modular form, can every technical performance index of former charger not exerted an influence, and the realization unattended operation, be full of automatic stop, by the interchange of relay physical break, DC charging loop.Do not need at ordinary times to plug the 220V ac power plug, do not have the requirement of plug plug order of operation, possess anti-reverse, anti-short-circuit function simultaneously.When being user-friendly to, prolong charger useful life, reduce the charger number of rewelding that causes because of misoperation significantly.Take care of the pence, popularizing also of module will be made contributions for country is energy-saving and cost-reducing.Identical or similar invention and utility model design are not found in patent retrieval.

Description of drawings

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

Fig. 1 is the circuit theory diagrams of the utility model embodiment one single disconnected module.

Fig. 2 is the circuit theory diagrams of the utility model embodiment two double break modules.

Embodiment

The utility model charger automatic stop double break modular circuit principle is seen Fig. 2.The 220V ac power plug can be inserted on the socket for a long time, when needs charge for the electric motor car storage battery, the charger output interface is inserted on the storage battery interface, press start button QA, the storage battery forward voltage is by anti-reverse diode D1, divider resistance R6, current-limiting resistance R5, closed QA normally opened contact is added between the NPN type switching tube V1 Base-Emitter, the conducting of switching tube V1 collector emitter, relay coil CJ gets, normally opened contact CJ-1 adhesive, charger 220V AC power is connected, charger is started working, CJ-2 adhesive at the same time, the forward voltage one tunnel of charger output is the storage battery charging through CJ-2, another road connects NE555 time-base circuit 8 pin and 4 pin through pressure limiting resistance R 3, this moment, 6 pin and 2 pin were low level, and the high level of 3 pin output is added to through R4 keeps the switching tube saturation conduction between the V1 Base-Emitter, and relay is realized self-locking.When the constant current of charger process, two stages of constant voltage enter the trickle charge stage after a few hours, this moment, red charging indicator light extinguished, green trickle charge indicator light lights, the voltage of taking from green trickle charge indicator light is through time constant resistance R 1, the R2 current limliting is electrochemical capacitor C1 charging, behind the delay time of setting, when NE555 time-base circuit 2 pin 6 pin current potentials rise to 2/3VCC (time-base circuit operating voltage), the output of 3 pin becomes low level, V1 ends because of losing base-emitter voltage, relay coil CJ dead electricity, normally opened contact CJ-1 disconnects, charger quits work, all indicator lights extinguish, and the CJ-2 that while charger cathode output end is communicated with storage battery also disconnects.The user only need pull out the charger output interface when needing with storage battery and get final product.(in particular cases, when not substituting the bad for the good urgently needed storage battery, should extract the 220V ac power plug earlier, extract the storage battery plug again.)

The selection of trickle charge delay time is by connecting or break-time constant resistance R 1, R2 realize.(shift bar is located on the shell, delays time winter about 2 hours, delays time other seasons about 1 hour or does not delay time), change R1, R2 resistance can change delay time.

QA1 is the under-voltage starting switch of dpdt double-pole double-throw (DPDT), is used for the serious power shortage of storage battery, and residual voltage uses in the time of can't making the reliable adhesive of relay coil.

Because of relay coil CJ operating voltage from storage battery, and in the loop string diode D1 is arranged, so when reversal connection of charger output or short circuit, charger can't start.

The single disconnected modular circuit operation principle of the utility model charger automatic stop is the same, and difference is to have replaced one group of contact of relay with diode.

Claims

1, a kind of charger automatic stop module of tape starting button, comprise the time constant resistance (R1) of importing green trickle charge indicator light voltage, (R2), time-delay charging capacitor (C1), realize (NE555) time-base circuit of time-delay back control signal counter-rotating, executive component relay (CJ), divider resistance (R3), (R6), anti-reverse diode (D1), start button (QA), NPN type switching tube (V1), current-limiting resistance (R4), (R5), under-voltage starting switch (QA1), it is characterized in that:, have start button and make in the charger automatic stop module because of realizing the charger automatic stop.

2, charger automatic stop module according to the described a kind of tape starting button of claim 1, it is characterized in that: relay coil (CJ) operating voltage is from storage battery, and go here and there in the loop on it anti-reverse diode (D1) is arranged, divider resistance (R6), another termination switching tube (V1) collector electrode of coil, (V1) grounded emitter, start button (QA) end string has current-limiting resistance (R5) to be connected between divider resistance (R6) and the relay coil (CJ), the other end is connected on current-limiting resistance (R4), between switching tube (V1) base stage, the other end of current-limiting resistance (R4) is connected on (NE555) time-base circuit (3) pin output, (NE555) the direct ground connection of time-base circuit (1) pin, (5) pin is by shunt capacitance (C2) ground connection, (6) pin (2) pin while and charging capacitor (C1) positive pole, time constant resistance (R2) end, one of two fixed contacts of gating switch are direct-connected to link to each other, (R2) another contact of two fixed contacts of the other end and logical switch links to each other (C1) minus earth.

3, charger automatic stop module according to claim 1 or 2 described a kind of tape starting buttons, it is characterized in that: automatic stop control signal voltage is taken from green trickle charge indicator light positive pole, and link to each other with the gating switch moving contact by time constant resistance (R1), the charger minus earth, anodal relay normally open contact (CJ-2) and the storage battery positive pole crossed of charger, diode (D1) is anodal to link to each other, the charger positive pole links to each other with (4) pin with (NE555) time-base circuit (8) pin by divider resistance (R3) before at mistake relay normally open contact (CJ-2)

4, according to the charger automatic stop module of claim 1,2,3 described a kind of tape starting buttons, it is characterized in that: two groups of contacts of under-voltage starting switch (QA1) are connected in parallel on two normally opened contacts (CJ-1) of relay respectively, (CJ-2) on.