CN201946961U

CN201946961U - Universal overcharge protection device

Info

Publication number: CN201946961U
Application number: CN2011200997676U
Authority: CN
Inventors: 邹国源
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-07
Filing date: 2011-04-07
Publication date: 2011-08-24
Anticipated expiration: 2021-04-07

Abstract

The utility model discloses a universal overcharge protection device, which comprises a switch power supply circuit, a battery quality detecting and power supply connection indicating circuit and a battery pole automatically recognizing circuit which are connected in sequence. The battery pole automatically recognizing circuit is respectively connected with a first charge port and a second charge port. A charger controlling module which is respectively connected with the two ends of the switch power supply circuit is also included. The novel charger is based on a switch power supply which is widely used in the market. Alternating current power of 220V outputs power of about 4.2V after a series of circuit process, an optical coupling silicon controlled rectifier 3063 of a master operational controller (MOC) series is utilized to control charging time, a triode reversely-stopping property which controls a light-emitting diode (LED) when the battery is charged is utilized to control optical coupling, and the whole machine is powered off after charging. Accordingly, energy is saved and the battery is protected.

Description

Overcharge omnipotent protective device

Technical field

The utility model relates to the charging technique field, especially a kind ofly overcharges omnipotent protective device.

Background technology

1, energy waste

Instantly, green living, low-carbon (LC) life are the life themes that country vigorously advocates, and also are somethings that we should support energetically and advocate.According to official website of national information portion data, on August 20th, 2007, China cellphone subscriber surpasses 4.87 hundred million, and has and reach 500,000,000 space.When giving cell-phone charging, we forget often pull out plug after mobile phone charge electricity.If every mobile phone is all with charging in per 2 days once, continue charging at night at every turn and calculated in 9 hours, so each charging will consume about 0.03 degree electricity, and the total power consumption of national mobile phone has reached 1,100,000,000 surprising degree unexpectedly over a year! If remove 0.01 degree that was consumed in 3 hours that every mobile phone charges normal, the electric energy of the annual additive decrementation of 200,000,000 mobile phones in the whole nation is about 7.3 hundred million degree, be equivalent to the 5.73 hundred million kilograms of carbon dioxide that produced gratuitous, also increased by 573050 hectares of photosynthetic burdens of broad-leaf forest simultaneously! The energy output in 1 year in power station, China Ge Zhou Ba is about 17,000,000,000 kilowatt hours (degree) at present, that is to say, the electric energy that all cell-phone chargings of the whole nation are wasted accounts for 4% of the annual energy output in power station, Ge Zhou Ba, and these data cause our thinking.

2, damage battery

Also having a problem is phenomenon---the cell degradation that we often occur when using mobile phone.After battery uses a period of time, can begin to wear out, capacity descends, the electric weight that shows on the mobile phone does not conform to the actual conditions, and often handset displays is the electric weight of full lattice, with after a few minutes, electric weight just only has been left half, more terrified is, the battery that has ' has been out of shape ' (battery bulging) unexpectedly also to be used, and this life security to us has constituted huge threat.Why is this? have some not understand that wherein the people of reason right over there talks nonsense in the life: any battery is not original-pack, charger is not original-pack, do not continue charging again with this activity that keeps his ion after being full of electricity, aging the causing of the mobile phone of saying so unexpectedly that has that more goes against accepted conventions.In fact, above saying all is some fallacies that spread on the net.Real situation is such: when using charger for mobile phone, battery begins charging, and when battery was charged to 4.15v, the charging indicator light on the charger extinguished (normally seven color LED lamps), and the expression battery is full of, and the prompting user can take off battery.But because various reasons are (such as having forgotten, perhaps charged electricity or the like) at midnight, in time do not take off battery, make charger continue charging (because charger is to be in "on" position always) in the mode of trickle, then allow the voltage of lithium battery slowly rise, internal pressure is also being followed rising (A point in figure below), when the voltage U of lithium electricity 〉=4.2v own, battery is initially located in the state of overcharging, and at this moment, the internal pressure rate of climb of battery is accelerated (figure below B point) suddenly, the most direct performance of injury to the lithium electricity is exactly the deformation of battery, slowly bulging also has the injury of some recessiveness, such as causing battery capacity to run off.

About how avoiding these problems to become the problem of our research, the product of our design also launches around this problem.The root of problem is exactly that battery is full of after the electricity in fact, does not turn off power supply timely, so the charger automation becomes the purpose and the direction of our research,

The utility model content

The purpose of this utility model is to overcome the technical problem that prior art rechargeable battery capacity runs off, and can protect the omnipotent protective device of overcharging of battery after providing a kind of charging to finish.

For realizing above purpose; the utility model has been taked following technical scheme: overcharge omnipotent protective device; include successively that the switching power circuit, the battery quality that connect detect and power supply energising indicating circuit, discern the circuit of battery polar automatically; automatically the circuit of identification battery polar is electrically connected with first charging end and second charging end respectively; also comprise the charger control module, it connects respectively at the switching power circuit two ends.Switching Power Supply is a kind ofly to utilize the switch power device and by the D.C. regulated power supply that power conversion technology is made, and has advantages such as variation adaptability to line voltage and frequency is strong.The Switching Power Supply that this circuit utilizes intermittent oscillation circuit to form also is one of present widely used normal power.

Described switching power circuit comprises rectifier diode, first dead resistance and first switching tube that is electrically connected successively, and the utmost point electrode of first switching tube is electrically connected to an end of the elementary winding of transformer, and the other end of elementary winding is electrically connected to rectifier diode; The emitter of described first switching tube is connected to an end of the inferior elementary winding of transformer, and the other end of inferior elementary winding is connected to first charging capacitor, is connected with the 4th charging capacitor and second switch pipe on the described transformer primary coils; Described battery quality detects and power supply energising indicating circuit comprises the 7th resistance and the red diode that connects successively, the circuit of described automatic identification battery polar comprises the 4th switching tube, the 5th switching tube, the 6th switching tube, the 7th switching tube, the emitter of described the 4th switching tube is connected with the emitter of the 5th switching tube, the base stage of the 4th switching tube is connected respectively to first charging end, the collector electrode of the 5th switching tube, the base stage of the 7th switching tube, the collector electrode of the 6th switching tube is electrically connected, the base stage of described the 6th switching tube be connected to first charging end after the collector electrode of the 7th switching tube is electrically connected, the emitter of the emitter of described the 7th switching tube and the 6th switching tube is electrically connected.

Described charger control module adopts optocoupler bidirectional triode thyristor MOC3060.

The utility model compared with prior art; have following advantage: this New-type charge device is based on the widely used Switching Power Supply in market; the 220v alternating current by a series of processing of circuit after the voltage of output about 4.2v; re-use MOC series optocoupler controllable silicon 3063 and control the charging interval; the reverse cut-off characteristics of triode of control LED is controlled optocoupler when being full of with battery; then make charge the electricity after complete dynamo-electric source close, with this reach energy savings and the protection battery effect.

Description of drawings

Fig. 1 is the utility model circuit principle structure figure;

Fig. 2 is a charger control module structural representation.

Embodiment

Below in conjunction with the drawings and specific embodiments content of the present utility model is described in further details.

Embodiment:

See also accompanying drawing 1; overcharge omnipotent protective device; include successively that the switching power circuit, the battery quality that connect detect and power supply energising indicating circuit, discern the circuit of battery polar automatically; automatically the circuit of identification battery polar is electrically connected with the first charging end X1 and the second charging end X2 respectively; also comprise charger control module 1, it connects respectively at the switching power circuit two ends.

Switching power circuit comprises rectifier diode VD1, the first dead resistance R1 and the first switching tube Q1 that is electrically connected successively, the utmost point electrode of the first switching tube Q1 is electrically connected to an end of the elementary winding L 1 of transformer T, and the other end of elementary winding L 1 is electrically connected to rectifier diode VD1; The emitter of the described first switching tube Q1 is connected to an end of the inferior elementary winding L 2 of transformer T, and the other end of inferior elementary winding L 2 is connected to the first charging capacitor C1, is connected with the 4th charging capacitor C4 and second switch pipe Q2 on the transformer T primary coils; The battery quality detects and power supply energising indicating circuit comprises the 7th resistance R 7 and the red diode PW that connects successively, automatically the circuit of identification battery polar comprises the 4th switching tube Q4, the 5th switching tube Q5, the 6th switching tube Q6, the 7th switching tube Q7, the emitter of the 4th switching tube Q4 is connected with the emitter of the 5th switching tube Q5, the base stage of the 4th switching tube Q4 is connected respectively to the first charging end X1, the collector electrode of the 5th switching tube Q5, the base stage of the 7th switching tube Q7, the collector electrode of the 6th switching tube Q6 is electrically connected, the base stage of the 6th switching tube Q6 be connected to the first charging end X2 after the collector electrode of the 7th switching tube Q7 is electrically connected, the emitter of the emitter of the 7th switching tube Q7 and the 6th switching tube Q6 is electrically connected.

The charger control module adopts optocoupler bidirectional triode thyristor MOC3060

After inserting power supply, starting current is provided for the first switching tube Q1 by rectifier diode VD1, dead resistance R1, make the first switching tube Q1 begin conducting, its collector current Ic increases at elementary winding L 1 neutral line, induction is sent as an envoy to the first switching tube Q1 base stage for just in secondary winding L2, the positive feedback voltage that emission is very negative makes the first switching tube Q1 very fast saturated.Meanwhile, induced voltage is given the first charging capacitor C1 charging, along with increasing of the first charging capacitor C1 charging voltage, the first switching tube Q1 base potential is step-down gradually, causes the first switching tube Q1 to withdraw from the saturation region, and Ic begins to reduce, induction is sent as an envoy to the first switching tube Q1 base stage for bearing, launch very positive voltage in secondary winding L2, the first switching tube Q1 is ended rapidly, rectifier diode VD1 conducting at this moment, the energy storage among the high frequency transformer T primary winding L1 discharges to load.When VT1 ends, there is not induced voltage among the secondary winding L2, the defeated people's voltage of direct current supply is given the first charging capacitor C1 reverse charging through the first dead resistance R1 again, improve the first switching tube Q1 base potential gradually, make its conducting again, the upset state that reaches capacity once more, circuit repeats vibration like this and goes down.Here just as single-end flyback switching power supply, export needed voltage by the secondary winding L2 of transformer T to load, obtain the direct current of 9V at the two ends of the 4th charging capacitor C4, for charging circuit work.

Charging circuit.Second switch pipe Q2 and CH (seven color light-emitting diodes) form charging indication.The battery quality of forming the 7th resistance R 7 and red diode PW detects and power supply energising indicating circuit.The 4th switching tube Q4, the 5th switching tube Q5, the 6th switching tube Q6, the 7th switching tube Q7 form the circuit of identification battery polar automatically.

When the first charging end X1 is just connecing battery, when the second charging end X2 connects battery negative, charge circuit be power supply+, the five or two switching tube Q5 (emitter), the 5th switching tube Q5 (collector electrode), the first charging end X1 connect+, the 7th switching tube Q7 (saturated), the second charging end X2 connect-;

When the second charging end X2 is just connecing battery, when end 1 connects battery negative, charge circuit be power supply+, Q4 (emitter), Q4 (collector electrode), end 2 connect+, Q6 (saturated), end 2 connect-.Can finish the identification of auto polarity, the assurance charge circuit is worked automatically.

See also shown in Figure 2ly, when 1,2 ends had input voltage, the conducting of IC internal body diodes was shinny, made alternating voltage to be passed through inner bidirectional triode thyristor conducting from 6,5 ends, a suitable switch closure; When 1,2 ends did not have voltage, 6,5 ends ended, and a suitable switch disconnects.The effect of this device is equivalent to a relay, but the volume of relay is big, and break-make is unreliable, add operating current big (3v generally about 80-100mA), so finally selected volume little, break-make is reliable, the optocoupler of operating current little (just can drive about 1-8mA), and it has realized the automation of control.

Technical parameter: input: 220vAC battery charge output: DC 4-4.2V, 200 ± 80mA.

Above-listed detailed description is at the specifying of the utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.

Claims

1. overcharge omnipotent protective device; it is characterized in that: include successively that the switching power circuit, the battery quality that connect detect and power supply energising indicating circuit, discern the circuit of battery polar automatically; automatically the circuit of identification battery polar is electrically connected with first charging end (X1) and second charging end (X2) respectively; also comprise charger control module (1), it connects respectively at the switching power circuit two ends.

2. as claimed in claim 1ly overcharge omnipotent protective device, it is characterized in that: described switching power circuit comprises rectifier diode (VD1), first dead resistance (R1) and first switching tube (Q1) that is electrically connected successively, the utmost point electrode of first switching tube (Q1) is electrically connected to an end of the elementary winding (L1) of transformer (T), and the other end of elementary winding (L1) is electrically connected to rectifier diode (VD1); The emitter of described first switching tube (Q1) is connected to an end of the inferior elementary winding (L2) of transformer (T), the other end of inferior elementary winding (L2) is connected to first charging capacitor (C1), is connected with the 4th charging capacitor (C4) and second switch pipe (Q2) on described transformer (T) primary coils; Described battery quality detects and power supply energising indicating circuit comprises the 7th resistance (R7) and the red diode (PW) that connects successively, the circuit of described automatic identification battery polar comprises the 4th switching tube (Q4), the 5th switching tube (Q5), the 6th switching tube (Q6), the 7th switching tube (Q7), the emitter of described the 4th switching tube (Q4) is connected with the emitter of the 5th switching tube (Q5), the base stage of the 4th switching tube (Q4) is connected respectively to first charging end (X1), the collector electrode of the 5th switching tube (Q5), the base stage of the 7th switching tube (Q7), the collector electrode of the 6th switching tube (Q6) is electrically connected, the base stage of described the 6th switching tube (Q6) be connected to first charging end (X2) after the collector electrode of the 7th switching tube (Q7) is electrically connected, the emitter of the emitter of described the 7th switching tube (Q7) and the 6th switching tube (Q6) is electrically connected.

3. as claimed in claim 1ly overcharge omnipotent protective device, it is characterized in that: described charger control module adopts optocoupler bidirectional triode thyristor MOC3060.