CN205829198U - A kind of battery linear charging block - Google Patents

Abstract

The utility model discloses a kind of battery linear charging block, including chip U1, resistance R1, electric capacity C1, LED, metal-oxide-semiconductor VS, described resistance R1 one end connects ground capacity C1 respectively, chip U1 pin 4, resistance R2 and resistance R3, resistance R1 other end connecting luminous diode LED positive pole, LED negative pole connects chip U1 pin 1, the resistance R3 other end connects the G pole of earth resistance R4 and metal-oxide-semiconductor VS respectively, the S pole of metal-oxide-semiconductor VS connects power supply VCC, the D pole of metal-oxide-semiconductor VS connects ground connection accumulator E positive pole respectively, electric capacity C2, the resistance R2 other end and chip U1 pin 3.This utility model battery linear charging block is that core forms by chip TP4057, and battery E can effectively carry out linear-charging, and stability is high, also shows function with LED, applied widely.

Description

A kind of battery linear charging block

Technical field

This utility model relates to a kind of charging circuit, specifically a kind of battery linear charging block.

Background technology

Lithium battery is energy storage electronic equipment common in daily life, it is well known that lithium battery need after being finished electricity into Row charging, the most most charger is all that constant current flings type, the voltage constant of its charging, will not be along with lithium battery The process of charging and change, more cannot realize being automatically stopped charging, therefore easily cause the punching of crossing of lithium battery, how intelligence, The charging modes of safety, is the emphasis studied of people.

Existing a lot of charging intelligent controller all use voltage comparator as charging automatic stop controller, but use Comparator can cause the volume of charger relatively greatly, is the most disadvantageous for present miniaturization, additionally also has a lot of employing to continue Electrical equipment is as controlling element, and stability is relatively low.

Utility model content

The purpose of this utility model is to provide a kind of battery linear charging block, to solve to propose in above-mentioned background technology Problem.

For achieving the above object, the following technical scheme of this utility model offer:

A kind of battery linear charging block, including chip U1, resistance R1, electric capacity C1, LED, metal-oxide-semiconductor VS, Described resistance R1 one end connects ground capacity C1, chip U1 pin 4, resistance R2 and resistance R3 respectively, and the resistance R1 other end connects LED positive pole, LED negative pole connects chip U1 pin 1, and the resistance R3 other end connects ground connection electricity respectively The G pole of resistance R4 and metal-oxide-semiconductor VS, the S pole of metal-oxide-semiconductor VS connects the D pole of power supply VCC, metal-oxide-semiconductor VS and is just connecting ground connection accumulator E respectively Pole, electric capacity C2, the resistance R2 other end and chip U1 pin 3, the electric capacity C2 other end connects resistance R5 and chip U1 pin 2 also respectively Ground connection, the resistance R5 other end connects chip U1 pin 6；Described chip U1 uses TP4057.

As this utility model further scheme: described power supply VCC voltage is 5V.

Compared with prior art, the beneficial effects of the utility model are: this utility model battery linear charging block is by core Sheet TP4057 is core composition, and battery E can effectively carry out linear-charging, and stability is high, also shows function with LED, is suitable for Scope is wide.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of battery linear charging block.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise The every other embodiment obtained, broadly falls into the scope of this utility model protection.

Refer to Fig. 1, in this utility model embodiment, a kind of battery linear charging block, including chip U1, resistance R1, Electric capacity C1, LED, metal-oxide-semiconductor VS, described resistance R1 one end connects ground capacity C1, chip U1 pin 4, electricity respectively Resistance R2 and resistance R3, resistance R1 other end connecting luminous diode LED positive pole, LED negative pole connects chip U1 and draws Foot 1, the resistance R3 other end connects the G pole of earth resistance R4 and metal-oxide-semiconductor VS respectively, and the S pole of metal-oxide-semiconductor VS connects power supply VCC, MOS The D pole of pipe VS connects ground connection accumulator E positive pole, electric capacity C2, the resistance R2 other end and chip U1 pin 3 respectively, electric capacity C2 another End connects resistance R5 and chip U1 pin 2 ground connection respectively, and the resistance R5 other end connects chip U1 pin 6；Described chip U1 adopts Use TP4057；Described power supply VCC voltage is 5V.

Operation principle of the present utility model is: refer to Fig. 1, and this utility model is that core forms by TP4057, TP4057 4 feet be power supply side, the 2 foot ground connection of TP4057, VCC drives field effect transistor VS to carry out switch motion through R3, adjusts E Charging time magnitude of voltage, R4 ground connection, effect be VS drive cut-off time prevent the G pole of VS from having drain voltage, cause VS to damage, 3 feet of TP4057 are charging current outfan, and current versus cell charges, and when battery is charged to the setting value of chip U1, automatically stops Only charging E, 6 feet of TP4057 are that charging current sets and monitoring shutdown effect, and R5 resistance is exactly this setting value, 1 foot of U1 Indicating for charged state, i.e. when charging E, LED is bright, and when E is full of, LED is gone out.

The effect of field effect transistor VS is protective effect, and when E overtension, during more than setting value, electric current can be through VS D, S pole, carries out clamper to voltage, it is ensured that E will not set off an explosion danger in overcharge.

It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this practicality in other specific forms new Type.Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall All changes in justice and scope are included in this utility model.Should not be considered as any reference in claim limiting Involved claim.

Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment May be appreciated other embodiments.

Claims (2)

1. a battery linear charging block, including chip U1, resistance R1, electric capacity C1, LED, metal-oxide-semiconductor VS, its Being characterised by, described resistance R1 one end connects ground capacity C1, chip U1 pin 4, resistance R2 and resistance R3 respectively, and resistance R1 is another One end connecting luminous diode LED positive pole, LED negative pole connects chip U1 pin 1, and the resistance R3 other end connects respectively Connecing the G pole of earth resistance R4 and metal-oxide-semiconductor VS, the S pole of metal-oxide-semiconductor VS connects the D pole of power supply VCC, metal-oxide-semiconductor VS and connects ground connection storage respectively Battery E positive pole, electric capacity C2, the resistance R2 other end and chip U1 pin 3, the electric capacity C2 other end connects resistance R5 and chip U1 respectively Pin 2 ground connection, the resistance R5 other end connects chip U1 pin 6；Described chip U1 uses TP4057.

Battery linear charging block the most according to claim 1, it is characterised in that described power supply VCC voltage is 5V.