CN108521162B - Quick charging circuit - Google Patents

Quick charging circuit Download PDF

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Publication number
CN108521162B
CN108521162B CN201810622461.0A CN201810622461A CN108521162B CN 108521162 B CN108521162 B CN 108521162B CN 201810622461 A CN201810622461 A CN 201810622461A CN 108521162 B CN108521162 B CN 108521162B
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China
Prior art keywords
pin
resistor
module
capacitor
parallel
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CN201810622461.0A
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CN108521162A (en
Inventor
邹先华
戚瑞斌
姚磊
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Shenzhen Ruijing Industrial Co ltd
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Shenzhen Ruijing Industrial Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention provides a quick charging circuit which comprises a driving module, an identification module, an over-temperature protection module and a switch module, wherein the identification module, the over-temperature protection module and the switch module are respectively connected with the driving module: the driving module controls charge and discharge and voltage rise and fall of the whole circuit through a charge and discharge control chip U7, a charge and discharge control chip U8, a singlechip U10 and a data communication protocol; the identification module identifies external components through the identification chip; the over-temperature protection module judges the temperature through a chip voltage regulator so as to control the on-off of a circuit; the switch module is used for receiving a charge and discharge instruction to control the charge and discharge on-off of the whole circuit. According to the invention, the current and voltage detection, control and circuit protection are carried out in the charging and discharging processes of the lithium battery, so that the damage to the lithium battery caused by excessive use in the use process is reduced, and the purposes of reducing the power consumption and prolonging the service life of the lithium battery are achieved.

Description

Quick charging circuit
Technical Field
The invention relates to the technical field of charging, in particular to a quick charging circuit.
Background
In the traditional charging scheme, a charging circuit is single, the charging efficiency is lower, and as the use requirement of a user on terminal equipment is higher and higher, the traditional charging method cannot meet the requirement of a consumer. In order to solve the problem, in the prior art, a low-voltage high-current mode is adopted, and in order to prevent a breakdown circuit with too high current and solve the problem of too large loss of large current in a transmission line, certain current equalizing measures are adopted, such as using 2 charging chips for current sharing; there are also technical solutions to charge the battery by increasing both the voltage and the current. However, in carrying out the present invention, the inventors have found that there are at least the following problems in the prior art: in the prior art, although the total current can be increased to achieve the effect of quick charge, the multi-path charging circuit can only be simultaneously closed and opened, and the safety protection circuit is not provided, so that the efficiency and the heating control cannot be well balanced.
Therefore, how to achieve the effect of rapid charging under the premise of controlling the temperature and ensuring the safety becomes a problem to be solved urgently.
Disclosure of Invention
The present invention is directed to the drawbacks of the prior art, and provides a fast charging circuit for solving the above-mentioned problems of the prior art.
According to one aspect of the present invention, there is provided a quick charge circuit, which is characterized by comprising a driving module, an identification module, an over-temperature protection module and a switch module, wherein the identification module, the over-temperature protection module and the switch module are respectively connected with the driving module:
the driving module performs charge and discharge control and voltage rise and fall control on the whole circuit through a rise and fall charge and discharge control chip U7, a charge and discharge control chip U8, a singlechip U10 and a data communication protocol;
the identification module identifies external components through the identification chip;
the over-temperature protection module judges the temperature through a chip voltage regulator so as to control the on-off of a circuit;
the switch module is used for receiving a charge and discharge instruction to control the charge and discharge on-off of the whole circuit.
Further, the driving module comprises a buck-boost charge-discharge control chip U7, a charge-discharge control chip U8, a singlechip U10, a plug J2, 30 resistors R6, R11-R16, R19, R22-R23, R27, R29, R34-R38, R66, R72, R82-R86 and R88-R94, 19 capacitors C11-C14, C19-C20, C38-C43, C48-C51, C53-C54 and C56, diodes D13 and D14, triodes Q8 and Q9, an inductance coil FR1, a signal Auto, BTV, CG-IO, a CG2-CLK, EN1-Discharge, NTC, OG-IO, OG2-CLK, SEG4, SW1, SW2 and VOL-Vin;
The buck-boost charge-discharge control chip U7 comprises 33 pins, a first pin is connected with one end of a resistor R15, a second pin is connected with one end of a resistor R16, a third pin is connected with the other end of a resistor R13, a fourth pin is connected with a fifth pin of the singlechip U10, the fifth pin is connected with the other end of a resistor R19, a sixth pin is connected with one end of a resistor R72, a seventh pin is respectively connected with one ends of resistors R86 and R90, an eighth pin is connected with one end of a resistor R66, a ninth pin is connected with one end of a resistor R83, a tenth pin is connected with one end of a resistor R84, an eleventh pin is connected with one end of a capacitor C53, a twelfth pin is respectively connected with one end of a resistor R93 and one end of a capacitor C54, a thirteenth pin is connected with one end of a resistor R85 and R88 and one end of a capacitor C43, a fourteenth pin, a twenty-fifth pin and a thirty-third pin are all grounded, a fifteenth pin is connected with one end of a resistor R94, a seventeenth pin is connected with one end of a switch module and a capacitor C38 respectively, an eighteenth pin is connected with the other end of the switch module and the capacitor C38 respectively, a nineteenth pin is connected with one end of a switch module and one end of a capacitor C40 respectively, a twentieth pin is connected with the switch module, a twenty second pin is connected with the other end of a capacitor C20 and one end of a diode D13 respectively, a twenty third pin is connected with the switch module, a twenty fourth pin is connected with the other end of a diode D13 respectively, one end of a diode D14 and one end of a capacitor C42 respectively, a twenty sixth pin is connected with the switch module, a twenty seventh pin is connected with one end of a signal SW1 and one end of a capacitor C19 respectively, a twenty eighth pin is connected with the switch module, the twenty-ninth pin is respectively connected with the other end of the diode D14 and the other end of the capacitor C19, the thirty-first pin is connected with the over-temperature protection module, the thirty-first pin is connected with one end of the capacitor C39, and the thirty-second pin is connected with the other end of the capacitor C39;
The other end of the resistor R72 is connected with one end of the capacitor C53;
the other end of the resistor R94 is connected with one end of the capacitor C56;
one end of the resistor R86 and the other end of the resistor R85, one end of the capacitor C41 and the other end of the capacitor C43 are connected with an over-temperature protection module;
one end of the resistor R81 and the other end of the resistor R27 are respectively connected with one ends of the resistors R14 and R82;
the other ends of the resistors R14 and R82 are connected in parallel, and one ends of the parallel connection are respectively connected with the collector electrode of the triode Q9;
the base electrode of the triode Q9 is respectively connected with one ends of the resistors R6 and R35;
the charge-discharge control chip U8 comprises 24 pins, wherein a first pin of the charge-discharge control chip is connected with one end of a capacitor C49, a second pin and a third pin of the charge-discharge control chip are connected with one end of a capacitor C48, a sixth pin, an eighth pin and a ninth pin of the charge-discharge control chip are connected in parallel, one end of the parallel connection is respectively connected with an over-temperature protection module, a seventh pin of the charge-discharge control chip is connected with one end of a capacitor C50, a tenth pin of the charge-discharge control chip is respectively connected with one end of a resistor R36 and one end of a capacitor C14, an eleventh pin of the charge-discharge control chip is connected with signals OG2-IO, a twelfth pin of the charge-discharge control chip is connected with signals OG2-CLK, a thirteenth pin of the charge-discharge control chip is respectively connected with a switch module, a fifteenth pin of the charge-discharge control chip is connected with the other end of a resistor R6, a sixteenth pin of a resistor R23 and a capacitor C11, a nineteenth pin of the charge-discharge control chip is respectively connected with one end of resistors R22 and a twenty first.
The other end of the resistor R36 is also connected with one ends of the resistors R27 and R29 respectively;
one end of the capacitor C12, one end of the capacitor C13 and one end of the resistor R91 are connected with the over-temperature protection module, and the other end of the resistor R37 and the resistor R38 are connected with the over-temperature protection module;
the plug-in J2 comprises five interfaces, wherein a first interface is connected with signals CG2-IO, a second interface is connected with signals CG2-CLK, a third interface is connected with a sixteenth pin of the charge-discharge control chip U8, a fourth interface is grounded, and a fifth interface is connected with the switch module;
the singlechip U10 comprises 28 pins, wherein a first pin is grounded, a second pin is connected with an identification module, a third pin is connected with an identification module, a fourth pin is connected with a signal SEG4, a fifth pin is connected with a fourth pin of a buck-boost charge-Discharge control chip U7, a ninth pin is connected with a switch module, a tenth pin is connected with a signal Auto, an eleventh pin is connected with an over-temperature protection module, a twelfth pin is connected with one end of a resistor R12, a thirteenth pin is connected with a signal EN1-Discharge, a fourteenth pin is connected with an over-temperature protection module, a fifteenth pin is connected with the other end of a resistor R16, a sixteenth pin is connected with one end of a resistor R19, a seventeenth pin is connected with the other end of a resistor R15, an eighteenth pin is connected with the over-temperature protection module, a nineteenth pin is connected with one end of a resistor R13, a twenty-first pin is connected with a switch module, a twenty-second pin is connected with a signal VOL-Vin, another end of a twenty-third pin is connected with a resistor R23, another end of a twenty-fourth pin is connected with a resistor R22, and a twenty-eighth pin is connected with a switch module;
The other end of the resistor R81 is connected with one ends of the resistors R34 and R11 respectively;
the other end of the resistor R11 is connected with the base electrode of the triode Q8;
the collector electrode of the triode Q8 is connected with the switch module, and the emitter electrode is grounded;
the other ends of the resistors R29, R34, R35, R66, R83, R84, R88, R90 and R93, the other ends of the capacitors C11, C12, C13, C14, C40, C41, C42, C49, C48, C50, C51, C53, C54 and C56 and the emitter of the transistor Q9 are all grounded.
Further, the identification module includes an identification chip U2, a jumper interface JP1, a power management chip Q10, resistors R3, R4, R5, R10, R65, R73, R74, R75, R78 and R79, a capacitor C6, and diodes D1, D2, D3 and D4;
the identification chip U2 comprises five pins, wherein a first pin is connected with a third pin in parallel, one end of the parallel connection is respectively connected with one end of a resistor R4 and one end of a capacitor C6, a second pin is grounded, a fourth pin is connected with the third pin of the jumper interface JP1, and a fifth pin is connected with the second pin of the jumper interface JP 1;
the jumper interface JP1 comprises eight pins, wherein a first pin of the jumper interface JP1 is connected with the over-temperature protection module, a fourth pin is connected in parallel with an eighth pin, and one ends of the parallel connection are respectively connected with one ends of the resistors R78 and R10 and a second pin and a fifth pin of the power management chip Q10;
The other end of the resistor R4 is connected with an over-temperature protection module; one end of the resistor R73 is also connected with an over-temperature protection module; the other end of the resistor R73 is connected with one ends of the resistors R74 and R75 respectively;
the other end of the R75 is connected with a power supply VOL;
the power management chip Q10 comprises six pins, wherein a first pin is connected with a third pin in parallel, one ends of the parallel pins are respectively connected with one ends of the resistors R65 and R79, a fourth pin is connected with a sixth pin in parallel, and one end of the parallel pin is connected with one end of the power supply R9;
the other end of the resistor R65 is connected with a driving module;
the other end of the resistor R9 is connected with an over-temperature protection module;
the other ends of the resistors R74 and R79 and the other end of the capacitor C6 are respectively grounded;
the diodes D1 and D2 are connected in parallel, one end of the parallel connection is connected with one end of the resistor R5, and the other end of the parallel connection is connected with the driving module;
the diodes D3 and D4 are connected in parallel, one end of the parallel connection is connected with one end of the resistor R3, and the other end of the parallel connection is connected with the driving module;
the other end of the resistor R3 is connected with a driving module.
Further, the identification chip U2 is a GL888F chip.
Further, the over-temperature protection module includes a voltage regulator U3, plug-ins J4, J5, J6 and J8, resistors R2, R20 and R21, capacitors C7, C15, C17 and C22, diodes D5 and D6, and a switch S1;
The voltage regulator U3 comprises three pins, wherein the first pin is grounded, the second pin is respectively connected with one end of the resistor R21 and one ends of the capacitors C17 and C22, and the third pin is connected with the driving module;
the other end of the resistor R21 is connected with one ends of the diodes D5 and D6 respectively;
the other end of the diode D5 is connected with one end of a resistor R20, and the other end of the resistor R20 is connected with a driving module;
the other end of the diode D6 is connected with a switch module;
one ends of the capacitors C7 and C15 are also respectively connected with a driving module;
the plug-in J4 comprises five interfaces, wherein a first interface is connected with the driving module, a second interface is connected with the driving module, a third interface is connected with the driving module, a fourth interface and a fifth interface are respectively connected with the identification module,
the plug-in units J5 and J6 respectively comprise four pins, and the four pins are grounded;
the plug-in J8 comprises four pins, and the four pins are connected with the switch module;
the switch S1 comprises four pins, wherein a first pin of the four pins is connected with the switch module, and a second pin of the four pins is connected with one end of the resistor R2;
the other ends of the capacitors C7, C15, C17 and C22 and the other end of the resistor R2 are grounded, respectively.
Further, the switch module includes a USB interface JP3, a plug J1, MOS transistors Q2, Q3, Q4, Q5, Q7, 22 resistors R17, R18, R39, R49, R50-R54, R57-R60, R67-R71, R76, R77, R80, and R92, a capacitor C2, C3, C5, C18, C23, C24, C30, C37, C44, C45, C46, C47, C60, C63, C65, C68, and C71, a transistor Q14, and an inductor L2, and FR1;
the USB interface JP3 includes twenty-four pins, a first pin, a twelfth pin, a thirteenth pin, and a twenty-fourth pin are respectively connected to one ends of the resistors R92 and R71, a fourth pin, a ninth pin, a sixteenth pin, and a twenty-first pin are respectively connected to the driving module, a fifth pin is connected to the driving module, and a sixth pin, a seventh pin, an eighteenth pin, and a nineteenth pin are connected to each other;
the other end of the resistor R71 is connected with a driving module;
the plug-in J1 comprises four pins, wherein a first pin of the plug-in J is connected with the driving module, a second pin of the plug-in J is grounded, a third pin of the plug-in J is connected with the over-temperature protection module, and a fourth pin of the plug-in J is connected with the driving module;
the MOS tubes Q2, Q3, Q4, Q5 and Q7 respectively comprise eight pins, the first pin to the third pin of each MOS tube are connected in parallel, and the fifth pin to the eighth pin are connected in parallel;
One end of the first pin to the third pin of the MOS tube Q2 which are connected in parallel is respectively connected with one end of the capacitor C44, one end of the inductance coil L2, one end of the resistor 59 and one end of the fifth pin to the eighth pin of the Q4 which are connected in parallel;
the fourth pin of the MOS tube Q2 is connected with one end of a resistor R67, and one ends of the fifth pin to the eighth pin which are connected in parallel are respectively connected with one ends of resistors R57, R50, R53 and R54;
the other end of the resistor R67 is connected with the driving module;
the other end of the resistor R57 is connected with the other end of the capacitor C44;
the other end of the resistor R50 is connected with a driving module;
the other ends of the resistors R53 and R54 are connected in parallel, and one end of the parallel connection is also connected with one end of a resistor R49, an over-temperature protection module, capacitors C3, C2, C30, C63 and C60 and a driving module;
the other end of the resistor R49 is connected with a driving module;
one end of the first pin to the third pin of the MOS tube Q4 connected in parallel is grounded, and the fourth pin is connected with one end of the resistor R68; the other end of the resistor R68 is connected with a driving module;
the other end of the resistor R59 is connected with one end of the capacitor C45;
one end of the first pin to the third pin of the MOS tube Q3 which are connected in parallel is respectively connected with the other end of the inductance coil L2, one end of the resistor R60, one end of the capacitor C46 and one end of the fifth pin to the eighth pin of the MOS tube Q5 which are connected in parallel, the fourth pin is connected with one end of the resistor R69, and one ends of the fifth pin to the eighth pin which are connected in parallel are respectively connected with one ends of the resistors R58, R51, R76 and R77;
One end of the resistor R60 is connected with one end of the capacitor C47;
the other end of the resistor R69 is connected with a driving module;
the other end of the resistor R58 is connected with the other end of the capacitor C46;
the other end of the resistor R77 is connected with a driving module;
the other ends of the resistors R76 and R77 are connected in parallel, and the other ends of the parallel connection are respectively connected with one end of the resistor R52, one end of the driving module, one end of the capacitors C18, C23, C24, C37, C65 and C68 and one end of the inductance coil FR 1;
one end of the first pin to the third pin of the MOS tube Q5 which is connected in parallel is grounded, and the fourth pin is connected with one end of the resistor R70; the other end of the resistor R70 is connected with a driving module;
one end of the first pin to the third pin of the MOS tube Q7 which are connected in parallel is respectively connected with the other end of the inductance coil FR1, one end of the capacitor C71 and one end of the resistor R80, the fourth pin is respectively connected with one end of the resistor R17 and the other end of the resistor R80, and one end of the fifth pin to the eighth pin which are connected in parallel is connected with one end of the capacitor C5;
the other end of the resistor R92, the other ends of the capacitors C2, C3, C5, C18, C23, C24, C30, C37, C45, C47, C60, C63, C65, C68 and C71 are all grounded;
the other end of the resistor R17 is connected with the collector of the triode Q14, the emitter of the triode Q14 is grounded, and the base is respectively connected with one ends of the resistors R18 and R39;
The other end of the resistor R18 is connected with a driving module.
Further, the capacitors C30 and C37 are capacitors having polarities, which represent one end of the negative electrode grounded.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the current and voltage detection, control and circuit protection are carried out in the charging and discharging processes of the lithium battery, so that the damage to the lithium battery caused by excessive use in the use process is reduced, and the purposes of reducing the power consumption and prolonging the service life of the lithium battery are achieved; and the arrangement of the over-temperature protection module can effectively ensure the reliability of the circuit, and meanwhile, the chip loss can be reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a block diagram of a fast charging circuit according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a driving module according to an embodiment of the invention;
FIG. 3 is a circuit diagram of an identification module according to an embodiment of the invention;
FIG. 4 is a circuit diagram of an over-temperature protection module according to an embodiment of the invention;
fig. 5 is a circuit diagram of a switch module in an embodiment of the invention.
Detailed Description
In order to enable those skilled in the art to better understand the present invention, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present invention with reference to the accompanying drawings.
In some of the flows described in the specification and claims of the present invention and in the foregoing figures, a plurality of operations occurring in a particular order are included, but it should be understood that the operations may be performed out of order or performed in parallel, with the order of operations such as 101, 102, etc., being merely used to distinguish between the various operations, the order of the operations themselves not representing any order of execution. In addition, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first" and "second" herein are used to distinguish different messages, devices, modules, etc., and do not represent a sequence, and are not limited to the "first" and the "second" being different types.
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Examples
As shown in fig. 1, the fast charging circuit according to the embodiment of the present invention includes a driving module 101, an identification module 102, an over-temperature protection module 103 and a switch module 104, which are respectively connected to the driving module 101:
The driving module 101 performs charge and discharge control and voltage rise and fall on the whole circuit through a charge and discharge control chip U7, a charge and discharge control chip U8, a singlechip U10 and a data communication protocol;
as shown in fig. 2, the driving module 101 includes a buck-boost charge-discharge control chip U7, a charge-discharge control chip U8, a single chip U10, a plug J2, resistors R6, R11, R12, R13, R14, R15, R16, R19, R22, R23, R27, R29, R34, R35, R36, R37, R38, R66, R72, R82, R83, R84, R85, R86, R88, R89, R90, R91, R93, and R94, 19 capacitors C11, C12, C13, C14, C19, C20, C38, C39, C40, C41, C42, C43, C48, C49, C50, C51, C53, C54, and C56, diodes D13 and D14, triodes Q8 and Q9, an inductor FR1, and signals Auto, BTV, CG-CG, sevin 2-CLK, OG 1-Discharge, NTC, OG-IO 2-SW 4, SW 1-v 2-CLK 2;
the buck-boost charge-discharge control chip U7 comprises 33 pins, a first pin is connected with one end of a resistor R15, a second pin is connected with one end of a resistor R16, a third pin is connected with the other end of a resistor R13, a fourth pin is connected with a fifth pin of the singlechip U10, the fifth pin is connected with the other end of a resistor R19, a sixth pin is connected with one end of a resistor R72, a seventh pin is respectively connected with one ends of resistors R86 and R90, an eighth pin is connected with one end of a resistor R66, a ninth pin is connected with one end of a resistor R83, a tenth pin is connected with one end of a resistor R84, an eleventh pin is connected with one end of a capacitor C53, a twelfth pin is respectively connected with one end of a resistor R93 and one end of a capacitor C54, a thirteenth pin is connected with one end of a resistor R85 and one end of a capacitor C43, a fourteenth pin, a twenty-fifth pin and a thirty-third pin are all grounded, a fifteenth pin is connected with one end of a resistor R94, a seventeenth pin is connected with one end of a switch module and a capacitor C38 respectively, an eighteenth pin is connected with the other end of the switch module and the capacitor C38 respectively, a nineteenth pin is connected with one end of a switch module and one end of a capacitor C40 respectively, a twentieth pin is connected with the switch module, a twenty second pin is connected with the other end of a capacitor C20 and one end of a diode D13 respectively, a twenty third pin is connected with the switch module, a twenty fourth pin is connected with the other end of a diode D13 respectively, one end of a diode D14 and one end of a capacitor C42 respectively, a twenty sixth pin is connected with the switch module, a twenty seventh pin is connected with one end of a signal SW1 and one end of a capacitor C19 respectively, a twenty eighth pin is connected with the switch module, the twenty-ninth pin is respectively connected with the other end of the diode D14 and the other end of the capacitor C19, the thirty-first pin is connected with the over-temperature protection module, the thirty-first pin is connected with one end of the capacitor C39, and the thirty-second pin is connected with the other end of the capacitor C39;
The other end of the resistor R72 is connected with one end of the capacitor C53;
the other end of the resistor R94 is connected with one end of the capacitor C56;
one end of the resistor R86 and the other end of the resistor R85, one end of the capacitor C41 and the other end of the capacitor C43 are connected with the over-temperature protection module;
one end of the resistor R81 and the other end of the resistor R27 are respectively connected with one ends of the resistors R14 and R82;
the other ends of the resistors R14 and R82 are connected in parallel, and one ends of the parallel connection are respectively connected with the collector electrode of the triode Q9;
the base electrode of the triode Q9 is respectively connected with one ends of the resistors R6 and R35;
the charge-discharge control chip U8 comprises 24 pins, wherein a first pin is connected with one end of a capacitor C49, a second pin and a third pin are connected with one end of a capacitor C48, a sixth pin, an eighth pin and a ninth pin are connected in parallel, one end of the parallel connection is respectively connected with an over-temperature protection module, a seventh pin is connected with one end of the capacitor C50, a tenth pin is respectively connected with one end of a resistor R36 and one end of a capacitor C14, an eleventh pin is connected with signals OG2-IO, a twelfth pin is connected with signals OG2-CLK, a thirteenth pin is respectively connected with a switch module, a fifteenth pin is connected with the other end of a resistor R6, a sixteenth pin is connected with the other end of a resistor R91 and one end of a capacitor C11, a nineteenth pin is respectively connected with one ends of resistors R23 and R38, a twentieth pin is respectively connected with one ends of resistors R22 and R37, and a twentieth pin is connected with the other ends of resistors R12 and R89;
The other end of the resistor R36 is also connected with one ends of the resistors R27 and R29 respectively;
one end of the capacitor C12, one end of the capacitor C13 and one end of the resistor R89 and one end of the resistor R91 and the other end of the resistor R37 and the resistor R38 are respectively connected with an over-temperature protection module;
the plug-in J2 comprises five interfaces, wherein a first interface is connected with signals CG2-IO, a second interface is connected with signals CG2-CLK, a third interface is connected with a sixteenth pin of the charge-discharge control chip U8, a fourth interface is grounded, and a fifth interface is connected with the switch module;
the singlechip U10 comprises 28 pins, wherein a first pin of the 28 pins is grounded, a second pin is connected with an identification module, a third pin is connected with an identification module, a fourth pin is connected with a signal SEG4, a fifth pin is connected with a fourth pin of a buck-boost charge-Discharge control chip U7, a ninth pin is connected with a switch module, a tenth pin is connected with a signal Auto, an eleventh pin is connected with an over-temperature protection module, a twelfth pin is connected with one end of a resistor R12, a thirteenth pin is connected with a signal EN1-Discharge, a fourteenth pin is connected with an over-temperature protection module, a fifteenth pin is connected with the other end of a resistor R16, a sixteenth pin is connected with one end of a resistor R19, a seventeenth pin is connected with the other end of a resistor R15, an eighteenth pin is connected with the over-temperature protection module, a nineteenth pin is connected with one end of a resistor R13, a twenty-second pin is connected with a switch module, a twenty-second pin is connected with a signal VOL-Vin, another end of a twenty-third connecting resistor R23, another end of a twenty-fourth pin is connected with a resistor R22, and a twenty-fifth pin is connected with a twenty-eighth switch module;
The other end of the resistor R81 is respectively connected with one ends of the resistors R34 and R11;
the other end of the resistor R11 is connected with the base electrode of the triode Q8;
the collector electrode of the triode Q8 is connected with the switch module, and the emitter electrode is grounded;
the other ends of the resistors R29, R34, R35, R66, R83, R84, R88, R90, and R93, the other ends of the capacitors C11, C12, C13, C14, C40, C41, C42, C49, C48, C50, C51, C53, C54, and C56, and the emitter of the transistor Q9 are all grounded.
The identification module 102 identifies the external components through the identification chip;
as shown in fig. 3, the identification module 102 includes an identification chip U2, a jumper interface JP1, a power management chip Q10, resistors R3, R4, R5, R10, R65, R73, R74, R75, R78, and R79, a capacitor C6, and diodes D1, D2, D3, and D4;
the identification chip U2 comprises five pins, wherein a first pin is connected with a third pin in parallel, one end of the parallel connection is respectively connected with one end of a resistor R4 and one end of a capacitor C6, a second pin is grounded, a fourth pin is connected with a third pin of a jumper interface JP1, and a fifth pin is connected with a second pin of the jumper interface JP 1;
the jumper interface JP1 comprises eight pins, wherein a first pin of the jumper interface JP1 is connected with the over-temperature protection module, a fourth pin is connected in parallel with an eighth pin, and one ends of the parallel connection are respectively connected with one ends of resistors R78 and R10 and a second pin and a fifth pin of the power management chip Q10;
The other end of the resistor R4 is connected with an over-temperature protection module; one end of the resistor R73 is also connected with an over-temperature protection module; the other end of the resistor R73 is connected with one ends of the resistors R74 and R75 respectively;
the other end of R75 is connected with a power supply VOL;
the power management chip Q10 comprises six pins, wherein a first pin is connected with a third pin in parallel, one ends of the parallel pins are respectively connected with one ends of resistors R65 and R79, a fourth pin is connected with a sixth pin in parallel, and one end of the parallel pin is connected with one end of a power supply R9;
the other end of the resistor R65 is connected with a driving module;
the other end of the resistor R9 is connected with an over-temperature protection module;
the other ends of the resistors R74 and R79 and the other end of the capacitor C6 are respectively grounded;
diodes D1 and D2 are connected in parallel, one end of the parallel connection is connected with one end of a resistor R5, and the other end of the parallel connection is connected with a driving module;
the diodes D3 and D4 are connected in parallel, one end of the parallel connection is connected with one end of the resistor R3, and the other end of the parallel connection is connected with the driving module;
the other end of the resistor R3 is connected with the driving module.
The identification chip U2 is a GL888F chip.
The over-temperature protection module 103 judges the temperature through a chip voltage regulator so as to control the on-off of a circuit;
as shown in fig. 4, the over-temperature protection module 103 includes a voltage regulator U3, plug-ins J4, J5, J6 and J8, resistors R2, R20 and R21, capacitors C7, C15, C17 and C22, diodes D5 and D6, and a switch S1;
The voltage regulator U3 comprises three pins, wherein the first pin is grounded, the second pin is respectively connected with one end of the resistor R21 and one ends of the capacitors C17 and C22, and the third pin is connected with the driving module;
the other end of the resistor R21 is respectively connected with one ends of the diodes D5 and D6;
the other end of the diode D5 is connected with one end of a resistor R20, and the other end of the resistor R20 is connected with the driving module;
the other end of the diode D6 is connected with a switch module;
one end of the capacitor C7 and one end of the capacitor C15 are respectively connected with a driving module;
the plug-in J4 comprises five interfaces, wherein a first interface is connected with the driving module, a second interface is connected with the driving module, a third interface is connected with the driving module, a fourth interface and a fifth interface are respectively connected with the identification module,
the plug-in components J5 and J6 respectively comprise four pins, and the four pins are grounded;
the plug-in J8 comprises four pins, and the four pins are connected with the switch module;
the switch S1 comprises four pins, wherein a first pin of the four pins is connected with the switch module, and a second pin of the four pins is connected with one end of the resistor R2;
the other ends of the capacitors C7, C15, C17 and C22 and the other end of the resistor R2 are grounded.
The switch module 105 is used for receiving a charge and discharge instruction to control the charge and discharge on-off of the whole circuit;
As shown in fig. 5, the switch module 105 includes a USB interface JP3, a plug J1, MOS transistors Q2, Q3, Q4, Q5, and Q7, resistors R17, R18, R39, R49, R50, R51, R52, R53, R54, R57, R58, R59, R60, R67, R68, R69, R70, R71, R76, R77, R80, and R92, capacitors C2, C3, C5, C18, C23, C24, C30, C37, C44, C45, C46, C47, C60, C63, C65, C68, and C71, a triode Q14, and inductors L2 and FR1;
the USB interface JP3 includes twenty-four pins, the first pin, the twelfth pin, the thirteenth pin, and the twenty-fourth pin are respectively connected to one ends of the resistors R92 and R71, the fourth pin, the ninth pin, the sixteenth pin, the twenty-first pin are respectively connected to the driving module, the fifth pin is connected to the driving module, and the sixth pin, the seventh pin, the eighteenth pin, and the nineteenth pin are connected to each other;
the other end of the resistor R71 is connected with a driving module;
the plug-in component J1 comprises four pins, wherein a first pin of the plug-in component J is connected with the driving module, a second pin of the plug-in component J is grounded, a third pin of the plug-in component J is connected with the over-temperature protection module, and a fourth pin of the plug-in component J is connected with the driving module;
the MOS tubes Q2, Q3, Q4, Q5 and Q7 respectively comprise eight pins, the first pin to the third pin of each MOS tube are connected in parallel, and the fifth pin to the eighth pin are connected in parallel;
One end of the first pin to the third pin of the MOS tube Q2 which are connected in parallel is respectively connected with one end of the capacitor C44, one end of the inductance coil L2, one end of the resistor 59 and one end of the fifth pin to the eighth pin of the Q4 which are connected in parallel;
the fourth pin of the MOS tube Q2 is connected with one end of a resistor R67, and one ends of the fifth pin to the eighth pin which are connected in parallel are respectively connected with one ends of resistors R57, R50, R53 and R54;
the other end of the resistor R67 is connected with the driving module;
the other end of the resistor R57 is connected with the other end of the capacitor C44;
the other end of the resistor R50 is connected with a driving module;
the other ends of the resistors R53 and R54 are connected in parallel, and one end of the parallel connection is also connected with one end of the resistor R49, the over-temperature protection module, the capacitors C3, C2, C30, C63 and C60 and the driving module;
the other end of the resistor R49 is connected with the driving module;
one end of the first pin to the third pin of the MOS tube Q4 which is connected in parallel is grounded, and the fourth pin is connected with one end of the resistor R68; the other end of the resistor R68 is connected with the driving module;
the other end of the resistor R59 is connected with one end of the capacitor C45;
one end of the first pin to the third pin of the MOS tube Q3 which are connected in parallel is respectively connected with the other end of the inductance coil L2, one end of the resistor R60, one end of the capacitor C46 and one end of the fifth pin to the eighth pin of the MOS tube Q5 which are connected in parallel, the fourth pin is connected with one end of the resistor R69, and one ends of the resistors R58, R51, R76 and R77 are respectively connected with one end of the fifth pin to the eighth pin which are connected in parallel;
One end of the resistor R60 is connected with one end of the capacitor C47;
the other end of the resistor R69 is connected with a driving module;
the other end of the resistor R58 is connected with the other end of the capacitor C46;
the other end of the resistor R77 is connected with a driving module;
the other ends of the resistors R76 and R77 are connected in parallel, and the other ends of the parallel connection are respectively connected with one end of the resistor R52, one end of the driving module, one end of the capacitors C18, C23, C24, C37, C65 and C68 and one end of the inductance coil FR 1;
one end of the first pin to the third pin of the MOS tube Q5 which is connected in parallel is grounded, and the fourth pin is connected with one end of the resistor R70; the other end of the resistor R70 is connected with a driving module;
one end of the first pin to the third pin of the MOS tube Q7 which are connected in parallel is respectively connected with the other end of the inductance coil FR1, one end of the capacitor C71 and one end of the resistor R80, the fourth pin is respectively connected with one end of the resistor R17 and the other end of the resistor R80, and one end of the fifth pin to the eighth pin which are connected in parallel is connected with one end of the capacitor C5;
the other end of the resistor R92, the other ends of the capacitors C2, C3, C5, C18, C23, C24, C30, C37, C45, C47, C60, C63, C65, C68 and C71 are all grounded;
the other end of the resistor R17 is connected with the collector of the triode Q14, the emitter of the triode Q14 is grounded, and the base is respectively connected with one ends of the resistors R18 and R39;
The other end of the resistor R18 is connected with the driving module.
Capacitors C30 and C37 are polar capacitors that represent the negative terminal to ground.
The current and voltage detection, control and circuit protection are carried out in the charging and discharging processes of the lithium battery, so that the damage to the lithium battery caused by excessive use in the use process is reduced, and the purposes of reducing power consumption and prolonging the service life of the lithium battery are achieved; and the arrangement of the over-temperature protection module can effectively ensure the reliability of the circuit, and meanwhile, the chip loss can be reduced.
The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims (6)

1. The quick charging circuit is characterized by comprising a driving module, an identification module, an over-temperature protection module and a switch module, wherein the identification module, the over-temperature protection module and the switch module are respectively connected with the driving module:
the driving module comprises a voltage-boosting and voltage-boosting charge-discharge control chip U7, a charge-discharge control chip U8, a singlechip U10, a plug-in J2, 30 resistors R6, R11-R16, R19, R22-R23, R27, R29, R34-R38, R66, R72, R82-R86 and R88-R94, 19 capacitors C11-C14, C19-C20, C38-C43, C48-C51, C53-C54 and C56, diodes D13 and D14, triodes Q8 and Q9, an inductor FR1, a signal Auto, BTV, CG-IO, CG2-CLK, EN1-Discharge, NTC, OG-IO, OG2-CLK, SW1, SW2 and VOL-Vin;
The buck-boost charge-discharge control chip U7 comprises 33 pins, a first pin is connected with one end of a resistor R15, a second pin is connected with one end of a resistor R16, a third pin is connected with the other end of a resistor R13, a fourth pin is connected with a fifth pin of the singlechip U10, the fifth pin is connected with the other end of a resistor R19, a sixth pin is connected with one end of a resistor R72, a seventh pin is respectively connected with one ends of resistors R86 and R90, an eighth pin is connected with one end of a resistor R66, a ninth pin is connected with one end of a resistor R83, a tenth pin is connected with one end of a resistor R84, an eleventh pin is connected with one end of a capacitor C53, a twelfth pin is respectively connected with one end of a resistor R93 and one end of a capacitor C54, a thirteenth pin is connected with one end of a resistor R85 and R88 and one end of a capacitor C43, a fourteenth pin, a twenty-fifth pin and a thirty-third pin are all grounded, a fifteenth pin is connected with one end of a resistor R94, a seventeenth pin is connected with one end of a switch module and a capacitor C38 respectively, an eighteenth pin is connected with the other end of the switch module and the capacitor C38 respectively, a nineteenth pin is connected with one end of a switch module and one end of a capacitor C40 respectively, a twentieth pin is connected with the switch module, a twenty second pin is connected with the other end of a capacitor C20 and one end of a diode D13 respectively, a twenty third pin is connected with the switch module, a twenty fourth pin is connected with the other end of a diode D13 respectively, one end of a diode D14 and one end of a capacitor C42 respectively, a twenty sixth pin is connected with the switch module, a twenty seventh pin is connected with one end of a signal SW1 and one end of a capacitor C19 respectively, a twenty eighth pin is connected with the switch module, the twenty-ninth pin is respectively connected with the other end of the diode D14 and the other end of the capacitor C19, the thirty-first pin is connected with the over-temperature protection module, the thirty-first pin is connected with one end of the capacitor C39, and the thirty-second pin is connected with the other end of the capacitor C39;
The other end of the resistor R72 is connected with one end of the capacitor C53;
the other end of the resistor R94 is connected with one end of the capacitor C56;
one end of the resistor R86 and the other end of the resistor R85, one end of the capacitor C41 and the other end of the capacitor C43 are connected with an over-temperature protection module;
one end of the resistor R81 and the other end of the resistor R27 are respectively connected with one ends of the resistors R14 and R82;
the other ends of the resistors R14 and R82 are connected in parallel, and one ends of the parallel connection are respectively connected with the collector electrode of the triode Q9;
the base electrode of the triode Q9 is respectively connected with one ends of the resistors R6 and R35; the charge-discharge control chip U8 comprises 24 pins, wherein a first pin of the charge-discharge control chip is connected with one end of a capacitor C49, a second pin and a third pin of the charge-discharge control chip are connected with one end of a capacitor C48, a sixth pin, an eighth pin and a ninth pin of the charge-discharge control chip are connected in parallel, one end of the parallel connection is respectively connected with an over-temperature protection module, a seventh pin of the charge-discharge control chip is connected with one end of a capacitor C50, a tenth pin of the charge-discharge control chip is respectively connected with one end of a resistor R36 and one end of a capacitor C14, an eleventh pin of the charge-discharge control chip is connected with signals OG2-IO, a twelfth pin of the charge-discharge control chip is connected with signals OG2-CLK, a thirteenth pin of the charge-discharge control chip is respectively connected with a switch module, a fifteenth pin of the charge-discharge control chip is connected with the other end of a resistor R6, a sixteenth pin of a resistor R23 and a capacitor C11, a nineteenth pin of the charge-discharge control chip is respectively connected with one end of resistors R22 and a twenty first. The other end of the resistor R36 is also connected with one ends of the resistors R27 and R29 respectively;
One end of the capacitor C12, one end of the capacitor C13 and one end of the resistor R91 are connected with the over-temperature protection module, and the other end of the resistor R37 and the resistor R38 are connected with the over-temperature protection module;
the plug-in J2 comprises five interfaces, wherein a first interface is connected with signals CG2-IO, a second interface is connected with signals CG2-CLK, a third interface is connected with a sixteenth pin of the charge-discharge control chip U8, a fourth interface is grounded, and a fifth interface is connected with the switch module;
the singlechip U10 comprises 28 pins, wherein a first pin is grounded, a second pin is connected with an identification module, a third pin is connected with an identification module, a fourth pin is connected with a signal SEG4, a fifth pin is connected with a fourth pin of a buck-boost charge-Discharge control chip U7, a ninth pin is connected with a switch module, a tenth pin is connected with an Auto, an eleventh pin is connected with an over-temperature protection module, a twelfth pin is connected with one end of a resistor R12, a thirteenth pin is connected with a signal EN1-Discharge, a fourteenth pin is connected with an over-temperature protection module, a fifteenth pin is connected with the other end of a signal resistor R16, a sixteenth pin is connected with one end of a resistor R19, a seventeenth pin is connected with the other end of a resistor R15, an eighteenth pin is connected with the over-temperature protection module, a nineteenth pin is connected with one end of a resistor R13, a twenty-eighth pin is connected with a signal NTC, a twenty-second pin is connected with a switch module, a twenty-second pin is connected with a signal VOL-Vin, a twenty-third pin is connected with the other end of a resistor R23, a twenty-fourth pin is connected with the other end of a resistor R22, and a twenty-eighth pin is connected with a twenty-fifth pin is connected with a switch module;
The other end of the resistor R81 is connected with one ends of the resistors R34 and R11 respectively;
the other end of the resistor R11 is connected with the base electrode of the triode Q8;
the collector electrode of the triode Q8 is connected with the switch module, and the emitter electrode is grounded;
the other ends of the resistors R29, R34, R35, R66, R83, R84, R88, R90 and R93, the other ends of the capacitors C11, C12, C13, C14, C40, C41, C42, C49, C48, C50, C51, C53, C54 and C56 and the emitter of the triode Q9 are all grounded;
the driving module performs charge and discharge control and voltage rise and fall control on the whole circuit through a rise and fall charge and discharge control chip U7, a charge and discharge control chip U8, a singlechip U10 and a data communication protocol;
the identification module identifies external components through the identification chip;
the over-temperature protection module judges the temperature through a chip voltage regulator so as to control the on-off of a circuit;
the switch module is used for receiving a charge and discharge instruction to control the charge and discharge on-off of the whole circuit.
2. The quick charge circuit of claim 1, wherein the identification module comprises an identification chip U2, a jumper interface JP1, a power management chip Q10, resistors R3, R4, R5, R10, R65, R73, R74, R75, R78 and R79, a capacitor C6, and diodes D1, D2, D3 and D4;
The identification chip U2 comprises five pins, wherein a first pin is connected with a third pin in parallel, one end of the parallel connection is respectively connected with one end of a resistor R4 and one end of a capacitor C6, a second pin is grounded, a fourth pin is connected with the third pin of the jumper interface JP1, and a fifth pin is connected with the second pin of the jumper interface JP 1;
the jumper interface JP1 comprises eight pins, wherein a first pin of the jumper interface JP1 is connected with the over-temperature protection module, a fourth pin is connected in parallel with an eighth pin, and one ends of the parallel connection are respectively connected with one ends of the resistors R78 and R10 and a second pin and a fifth pin of the power management chip Q10;
the other end of the resistor R4 is connected with an over-temperature protection module; one end of the resistor R73 is also connected with an over-temperature protection module; the other end of the resistor R73 is connected with one ends of the resistors R74 and R75 respectively;
the other end of the R75 is connected with a power supply VOL;
the power management chip Q10 comprises six pins, wherein a first pin is connected with a third pin in parallel, one ends of the parallel pins are respectively connected with one ends of the resistors R65 and R79, a fourth pin is connected with a sixth pin in parallel, and one end of the parallel pin is connected with one end of the power supply R9;
the other end of the resistor R65 is connected with a driving module;
The other end of the resistor R9 is connected with an over-temperature protection module;
the other ends of the resistors R74 and R79 and the other end of the capacitor C6 are respectively grounded;
the diodes D1 and D2 are connected in parallel, one end of the parallel connection is connected with one end of the resistor R5, and the other end of the parallel connection is connected with the driving module;
the diodes D3 and D4 are connected in parallel, one end of the parallel connection is connected with one end of the resistor R3, and the other end of the parallel connection is connected with the driving module;
the other end of the resistor R3 is connected with a driving module.
3. The quick charge circuit of claim 2, wherein the identification chip U2 is a GL888F chip.
4. The quick charge circuit of claim 1, wherein the over-temperature protection module comprises a voltage regulator U3, plug-ins J4, J5, J6 and J8, resistors R2, R20 and R21, capacitors C7, C15, C17 and C22, diodes D5 and D6, and a switch S1;
the voltage regulator U3 comprises three pins, wherein the first pin is grounded, the second pin is respectively connected with one end of the resistor R21 and one ends of the capacitors C17 and C22, and the third pin is connected with the driving module;
the other end of the resistor R21 is connected with one ends of the diodes D5 and D6 respectively;
the other end of the diode D5 is connected with one end of a resistor R20, and the other end of the resistor R20 is connected with a driving module;
The other end of the diode D6 is connected with a switch module;
one ends of the capacitors C7 and C15 are also respectively connected with a driving module;
the plug-in J4 comprises five interfaces, wherein a first interface is connected with the driving module, a second interface is connected with the driving module, a third interface is connected with the driving module, a fourth interface and a fifth interface are respectively connected with the identification module,
the plug-in units J5 and J6 respectively comprise four pins, and the four pins are grounded;
the plug-in J8 comprises four pins, and the four pins are connected with the switch module;
the switch S1 comprises four pins, wherein a first pin of the four pins is connected with the switch module, and a second pin of the four pins is connected with one end of the resistor R2;
the other ends of the capacitors C7, C15, C17 and C22 and the other end of the resistor R2 are grounded, respectively.
5. The quick charge circuit of claim 1, wherein the switch module comprises a USB interface JP3, a plug J1, MOS transistors Q2, Q3, Q4, Q5, and Q7, 22 resistors R17, R18, R39, R49, R50-R54, R57-R60, R67-R71, R76, R77, R80, and R92, a capacitor C2, C3, C5, C18, C23, C24, C30, C37, C44, C45, C46, C47, C60, C63, C65, C68, and C71, a transistor Q14, and inductors L2 and FR1;
The USB interface JP3 includes twenty-four pins, a first pin, a twelfth pin, a thirteenth pin, and a twenty-fourth pin are respectively connected to one ends of the resistors R92 and R71, a fourth pin, a ninth pin, a sixteenth pin, and a twenty-first pin are respectively connected to the driving module, a fifth pin is connected to the driving module, and a sixth pin, a seventh pin, an eighteenth pin, and a nineteenth pin are connected to each other;
the signal VSS pin of the USB interface JP3 is also connected with one ends of resistors R92 and R71 respectively;
the other end of the resistor R71 is connected with a driving module;
the plug-in J1 comprises four pins, wherein a first pin of the plug-in J is connected with the driving module, a second pin of the plug-in J is grounded, a third pin of the plug-in J is connected with the over-temperature protection module, and a fourth pin of the plug-in J is connected with the driving module;
the MOS tubes Q2, Q3, Q4, Q5 and Q7 respectively comprise eight pins, the first pin to the third pin of each MOS tube are connected in parallel, and the fifth pin to the eighth pin are connected in parallel;
one end of the first pin to the third pin of the MOS tube Q2 which are connected in parallel is respectively connected with one end of the capacitor C44, one end of the inductance coil L2, one end of the resistor 59 and one end of the fifth pin to the eighth pin of the Q4 which are connected in parallel;
The fourth pin of the MOS tube Q2 is connected with one end of a resistor R67, and one ends of the fifth pin to the eighth pin which are connected in parallel are respectively connected with one ends of resistors R57, R50, R53 and R54;
the other end of the resistor R67 is connected with the driving module;
the other end of the resistor R57 is connected with the other end of the capacitor C44;
the other end of the resistor R50 is connected with a driving module;
the other ends of the resistors R53 and R54 are connected in parallel, and one end of the parallel connection is also connected with one end of a resistor R49, an over-temperature protection module, capacitors C3, C2, C30, C63 and C60 and a driving module;
the other end of the resistor R49 is connected with a driving module;
one end of the first pin to the third pin of the MOS tube Q4 connected in parallel is grounded, and the fourth pin is connected with one end of the resistor R68; the other end of the resistor R68 is connected with a driving module;
the other end of the resistor R59 is connected with one end of the capacitor C45;
one end of the first pin to the third pin of the MOS tube Q3 which are connected in parallel is respectively connected with the other end of the inductance coil L2, one end of the resistor R60, one end of the capacitor C46 and one end of the fifth pin to the eighth pin of the MOS tube Q5 which are connected in parallel, the fourth pin is connected with one end of the resistor R69, and one ends of the fifth pin to the eighth pin which are connected in parallel are respectively connected with one ends of the resistors R58, R51, R76 and R77;
One end of the resistor R60 is connected with one end of the capacitor C47;
the other end of the resistor R69 is connected with a driving module;
the other end of the resistor R58 is connected with the other end of the capacitor C46;
the other end of the resistor R77 is connected with a driving module;
the other ends of the resistors R76 and R77 are connected in parallel, and the other ends of the parallel connection are respectively connected with one end of the resistor R52, one end of the driving module, one end of the capacitors C18, C23, C24, C37, C65 and C68 and one end of the inductance coil FR 1;
one end of the first pin to the third pin of the MOS tube Q5 which is connected in parallel is grounded, and the fourth pin is connected with one end of the resistor R70; the other end of the resistor R70 is connected with a driving module;
one end of the first pin to the third pin of the MOS tube Q7 which are connected in parallel is respectively connected with the other end of the inductance coil FR1, one end of the capacitor C71 and one end of the resistor R80, the fourth pin is respectively connected with one end of the resistor R17 and the other end of the resistor R80, and one end of the fifth pin to the eighth pin which are connected in parallel is connected with one end of the capacitor C5;
the other end of the resistor R92, the other ends of the capacitors C2, C3, C5, C18, C23, C24, C30, C37, C45, C47, C60, C63, C65, C68 and C71 are all grounded;
the other end of the resistor R17 is connected with the collector of the triode Q14, the emitter of the triode Q14 is grounded, and the base is respectively connected with one ends of the resistors R18 and R39;
The other end of the resistor R18 is connected with a driving module.
6. The quick charge circuit of claim 5, wherein the capacitors C30 and C37 are polar capacitors that represent the negative terminal at one end thereof to ground.
CN201810622461.0A 2018-06-15 2018-06-15 Quick charging circuit Active CN108521162B (en)

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CN109698538B (en) * 2019-02-25 2020-10-23 厦门芯阳科技股份有限公司 Battery charging circuit and battery charging method
CN112165140B (en) * 2020-10-14 2022-06-07 维沃移动通信有限公司 Charging and discharging control method and device and power supply equipment

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