CN208707368U

CN208707368U - A kind of two-way is without interference high accuracy battery charger

Info

Publication number: CN208707368U
Application number: CN201821652770.4U
Authority: CN
Inventors: 杨芹
Original assignee: Jin Xinyu Power Supply (shenzhen) Co Ltd
Current assignee: Jin Xinyu Power Supply (shenzhen) Co Ltd
Priority date: 2018-10-11
Filing date: 2018-10-11
Publication date: 2019-04-05
Anticipated expiration: 2028-10-11

Abstract

The utility model discloses a kind of two-ways without interference high accuracy battery charger, including first group of battery charger and second group of battery charger, contain rectification integrated circuit BD1 in first group of battery charger, inductance L1, transformer T1A, T1B, chip U1, triode Q1, Q2 and Light-emitting diode LED 1, LED2, wherein, after the foot 3 of rectification integrated circuit BD1 concatenates fuse F1, meet alternating current AC-L, the foot 4 of rectification integrated circuit BD1 meets alternating current AC-N, the foot 1 of rectification integrated circuit BD1, foot 2 meets inductance L1, inductance L1 connects primary main winding one end of transformer T1A.This two-way is without interference high accuracy battery charger, compared to traditional lithium electricity charging circuit, it enormously simplifies circuit structure, save element cost, and, it is completely independent by two groups, and can be simultaneously two groups of batteries without highly reliable charging circuit is interfered, so as to substantially increase the charge efficiency of battery.

Description

A kind of two-way is without interference high accuracy battery charger

Technical field

The utility model relates to battery charger technical field, specially a kind of two-way is without interference high accuracy battery charging Device.

Background technique

Traditional battery charger is all battery charging a group by a group, fills another group or two group one again full of one group It rises and fills, but internal only one group of charging circuit, only DC separate two groups while filling two groups of batteries, and the efficiency to charge in this way is very It is low, more seriously charges as two groups of batteries are inserted on one DC simultaneously, exactly two batteries are together in parallel charging in fact, Such two groups of batteries will appear in charging interferes with each other phenomenon, if two groups of cell voltages are different also to have high voltage electricity The phenomenon that pond is discharged to low-voltage battery, such as two groups of cell voltage differences are larger, it may appear that instant discharge current is very big existing As having a certain impact in this way to the service life of battery.

Utility model content

The purpose of this utility model is to provide a kind of two-ways without interference high accuracy battery charger, compared to traditional lithium electricity Charging circuit enormously simplifies circuit structure, saves element cost, also, is completely independent by two groups, and can be simultaneously Two groups of batteries solve the prior art without the highly reliable charging circuit of interference so as to substantially increase the charge efficiency of battery The problems in.

To achieve the above object, the utility model provides the following technical solutions: a kind of two-way is filled without interference high accuracy battery Electric appliance, including first group of battery charger and second group of battery charger contain in first group of battery charger Rectification integrated circuit BD1, inductance L1, transformer T1A, T1B, chip U1, triode Q1, Q2 and Light-emitting diode LED 1, LED2, Wherein, after the foot 3 of rectification integrated circuit BD1 concatenates fuse F1, alternating current AC-L is met, the foot 4 of rectification integrated circuit BD1 connects alternating current Foot 1, the foot 2 of AC-N, rectification integrated circuit BD1 meet inductance L1, and inductance L1 connects primary main winding one end of transformer T1A, transformation The foot 5 of another chip termination U1 of the primary main winding of device T1A after the foot 1 series resistor R7 and diode D1 of chip U1, connects transformation The winding of device T1B, the secondary windings one of transformer T1A terminate output interface V+, the secondary windings other end concatenation of transformer T1A After diode D5, output interface V- is met, after base stage series resistor R36, R30 of triode Q1, Light-emitting diode LED 1, LED2, The emitter-base bandgap grading of triode Q2 is connect, the base stage of triode Q2 connects the collector of triode Q1；

Contain transformer T2A, T2B, chip U2, triode Q3, Q4 and luminous two in second group of battery charger Pole pipe LED3, LED4, wherein after primary main winding one end series resistor R18, R19 of transformer T2A, connect 1 electricity of foot of chip U2 Road interface, the foot 5 of another chip termination U2 of the primary main winding of transformer T2A, the 1 series resistor R21 of foot of chip U2 and two poles After pipe D3, the winding of transformer T2B is connect, the secondary windings one of transformer T2A terminates output interface V+, the secondary of transformer T2A After winding other end series diode D8, output interface V-, base stage series resistor R28, R37, the light-emitting diodes of triode Q3 are connect After pipe LED3, LED4, the emitter-base bandgap grading of triode Q4 is connect, the base stage of triode Q4 connects the collector of triode Q3.

Preferably, the emitter-base bandgap grading of the triode Q1 connects the circuit interface of series resistance R26, R27, series resistance R26, R27 One end ground connection, after other end series diode D6, connect the secondary winding circuit interface of transformer T1A.

Preferably, the emitter-base bandgap grading of the triode Q3 connects the circuit interface of series resistance R34, R35, series resistance R34, R35 One end ground connection, after other end series diode D7, connect the secondary winding circuit interface of transformer T2A.

Preferably, the model of the chip U1 and chip U2 is SY50133.

Compared with prior art, the beneficial effects of the utility model are as follows:

This two-way without interference high accuracy battery charger, abandoned secondary amplifier in traditional lithium electricity charging circuit, optocoupler, The electronic components such as benchmark, detection resistance, feedback, as soon as by primary using a control chip U2, can high-precision constant pressure and Constant current greatly simplified circuit in this way, save element cost；Also, this charger uses two groups of charging circuits, and two groups Circuit is completely independent, and can simultaneously be the charging highly reliable without interference of two groups of batteries, thus has been greatly improved the charging of battery Efficiency.

Detailed description of the invention

Fig. 1 is first group of battery charger figure of the utility model；

Fig. 2 is second group of battery charger figure of the utility model.

In figure: 1, first group of battery charger；2, second group of battery charger.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, a kind of two-way is without interference high accuracy battery charger, including first group of battery charger 1 and the Two groups of battery chargers 2, in first group of battery charger 1 containing rectification integrated circuit BD1, inductance L1, transformer T1A, T1B, chip U1, triode Q1, Q2 and Light-emitting diode LED 1, LED2, wherein the foot 3 of rectification integrated circuit BD1 concatenates insurance After silk F1, alternating current AC-L is met, the foot 4 of rectification integrated circuit BD1 meets alternating current AC-N, and foot 1, the foot 2 of rectification integrated circuit BD1 connects electricity Feel L1, inductance L1 connects primary main winding one end of transformer T1A, another chip termination U1's of the primary main winding of transformer T1A Foot 5 after the foot 1 series resistor R7 and diode D1 of chip U1, connects the winding of transformer T1B, the secondary windings one of transformer T1A After termination output interface V+, the secondary windings other end series diode D5 of transformer T1A, output interface V-, triode Q1 are met Base stage series resistor R36, R30, Light-emitting diode LED 1, after LED2, connect the emitter-base bandgap grading of triode Q2, the emitter-base bandgap grading of triode Q1 connects One end of the circuit interface of series resistance R26, R27, series resistance R26, R27 is grounded, and after other end series diode D6, connects change The secondary winding circuit interface of depressor T1A, the base stage of triode Q2 connect the collector of triode Q1；Due to the model of chip U1 SY50133, and there is the protection such as high-precision constant pressure, current constant control and over-voltage, short circuit, and interior inside the chip U1 of the model Portion is integrated with high-voltage MOS pipe, therefore, can accurately control output voltage in real time；

Referring to Fig. 2, the chip containing transformer T2A, T2B, model SY50133 in second group of battery charger 2 U2, triode Q3, Q4 and Light-emitting diode LED 3, LED4, wherein primary main winding one end series resistor of transformer T2A After R18, R19,1 circuit interface of foot of chip U2, the foot 5 of another chip termination U2 of the primary main winding of transformer T2A, chip are connect After the foot 1 series resistor R21 and diode D3 of U2, the winding of transformer T2B is connect, the secondary windings one of transformer T2A terminates defeated After the secondary windings other end series diode D8 of outgoing interface V+, transformer T2A, output interface V-, the base stage of triode Q3 are connect After series resistor R28, R37, Light-emitting diode LED 3, LED4, the emitter-base bandgap grading of triode Q4 is connect, the emitter-base bandgap grading of triode Q3 connects series electrical The circuit interface of R34, R35 are hindered, one end of series resistance R34, R35 is grounded, and after other end series diode D7, connects transformer The secondary winding circuit interface of T2A, the base stage of triode Q4 connect the collector of triode Q3；Since the model of chip U2 is also SY50133, and there is the protection such as high-precision constant pressure, current constant control and over-voltage, short circuit, and interior inside the chip U2 of the model Portion is integrated with high-voltage MOS pipe, therefore, can accurately control output voltage in real time.

Circuit theory: alternating current enters in rectification integrated circuit BD1 by fuse F1, is high pressure alternating voltage variation DC voltage then in the primary main winding of voltage input transformer T1A, is connected to metal-oxide-semiconductor inside chip U2 by main winding Drain electrode, the voltage that internal circuit control metal-oxide-semiconductor conducting shutdown is added on the winding of transformer T1A to control；Chip U2 starting Afterwards by transformer T1B winding power, by VSEN, ISE foot to external voltage and real-time current detection, and pass through inside The conducting and closing of a series of circuit controls high-voltage MOS pipe such as amplifiers, the voltage of alternation and electric current flow through the master of transformer T1A around After group, voltage is induced on the secondary windings of transformer T1A, is reduced into direct current after diode D5 rectification, capacitor C10 filtering It is exported after electricity.

In summary: this two-way is greatly simplified without interference high accuracy battery charger compared to traditional lithium electricity charging circuit Circuit structure saves element cost, also, is completely independent by two groups and can be high without interference for two groups of batteries simultaneously Reliable charging circuit, so as to substantially increasing the charge efficiency of battery, thus effective solution is in the prior art asks Topic.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of two-way is filled without interference high accuracy battery charger, including first group of battery charger (1) and second group of battery Circuit (2), it is characterised in that: contain rectification integrated circuit BD1, inductance L1, change in first group of battery charger (1) Depressor T1A, T1B, chip U1, triode Q1, Q2 and Light-emitting diode LED 1, LED2, wherein the foot 3 of rectification integrated circuit BD1 After concatenating fuse F1, alternating current AC-L is met, the foot 4 of rectification integrated circuit BD1 connects alternating current AC-N, the foot of rectification integrated circuit BD1 1, foot 2 meets inductance L1, and inductance L1 connects primary main winding one end of transformer T1A, another termination of primary main winding of transformer T1A The foot 5 of chip U1 after the foot 1 series resistor R7 and diode D1 of chip U1, connects the winding of transformer T1B, time of transformer T1A After the grade termination of winding one output interface V+, the secondary windings other end series diode D5 of transformer T1A, output interface V- is met, After base stage series resistor R36, R30 of triode Q1, Light-emitting diode LED 1, LED2, the emitter-base bandgap grading of triode Q2, triode Q2 are met Base stage connect the collector of triode Q1；

Contain transformer T2A, T2B, chip U2, triode Q3, Q4 and light-emitting diodes in second group of battery charger (2) Pipe LED3, LED4, wherein after primary main winding one end series resistor R18, R19 of transformer T2A, connect 1 circuit of foot of chip U2 Interface, the foot 5 of another chip termination U2 of the primary main winding of transformer T2A, the 1 series resistor R21 of foot and diode of chip U2 After D3, connect the winding of transformer T2B, the secondary windings one of transformer T2A terminates output interface V+, transformer T2A it is secondary around After group other end series diode D8, output interface V-, base stage series resistor R28, R37, the light emitting diode of triode Q3 are connect After LED3, LED4, the emitter-base bandgap grading of triode Q4 is connect, the base stage of triode Q4 connects the collector of triode Q3.

2. a kind of two-way according to claim 1 is without interference high accuracy battery charger, it is characterised in that: the triode The emitter-base bandgap grading of Q1 connects the circuit interface of series resistance R26, R27, one end ground connection of series resistance R26, R27, and the other end concatenates two poles After pipe D6, the secondary winding circuit interface of transformer T1A is connect.

3. a kind of two-way according to claim 1 is without interference high accuracy battery charger, it is characterised in that: the triode The emitter-base bandgap grading of Q3 connects the circuit interface of series resistance R34, R35, one end ground connection of series resistance R34, R35, and the other end concatenates two poles After pipe D7, the secondary winding circuit interface of transformer T2A is connect.

4. a kind of two-way according to claim 1 is without interference high accuracy battery charger, it is characterised in that: the chip U1 Model with chip U2 is SY50133.