CN110649680A - Dual-end power supply multipurpose mobile power supply circuit - Google Patents
Dual-end power supply multipurpose mobile power supply circuit Download PDFInfo
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- CN110649680A CN110649680A CN201911026441.8A CN201911026441A CN110649680A CN 110649680 A CN110649680 A CN 110649680A CN 201911026441 A CN201911026441 A CN 201911026441A CN 110649680 A CN110649680 A CN 110649680A
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The invention discloses a dual-end-powered multipurpose mobile power supply circuit, which comprises a charging protocol chip U1, an LED indicating circuit, a key circuit, a lithium battery protection circuit, a charging detection circuit, a TYPE-A female port, a MICRO-B charging port, a TYPE-C female port and a lighting circuit, wherein the LED indicating circuit, the key circuit, the lithium battery protection circuit, the charging detection circuit, the TYPE-A female port, the MICRO-B charging port, the TYPE-C female port and the lighting circuit are all connected to the charging protocol chip U1, and the TYPE of the charging protocol chip U1 is set as IP 5310; the invention increases the charging efficiency, realizes one mouth with multiple purposes, saves the production cost, improves the adaptability of the mobile power supply, realizes the multiple purposes of the illuminating lamp and has good market application value.
Description
Technical Field
The invention relates to the field of mobile power supplies, in particular to a dual-end-powered multipurpose mobile power supply circuit.
Background
The mobile power supply is a portable charging device integrating power supply and charging functions, and can charge or supply power to digital devices such as mobile phones and the like at any time and any place. The mobile power supply circuit typically includes a battery and a series of control circuits.
At present, most mobile power supplies on the market are composed of a micro USB input interface and a USB2.0 output interface or a micro USB input interface and a plurality of USB2.0 output interfaces, and are in existing adaptation. Because portable power source electric capacity is big, consequently longer charging time to portable power source, consequently need charge to portable power source soon, and protect portable power source's safety, current portable power source adopts the singlechip to control more, and the singlechip cost is higher, and the configuration is complicated and a plurality of interfaces of singlechip let the cost increase, and circuit conversion efficiency reduces, and the fault rate of circuit increases.
The prior art has defects and needs to be improved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a dual-end power supply multipurpose mobile power supply circuit.
The technical scheme provided by the invention is that a dual-end power supply multipurpose mobile power supply circuit comprises a charging protocol chip U1, an LED indicating circuit, a key circuit, a lithium battery protection circuit, a charging detection circuit, a TYPE-A female port, a MICRO-B charging port, a TYPE-C female port and a lighting circuit, wherein the LED indicating circuit, the key circuit, the lithium battery protection circuit, the charging detection circuit, the TYPE-A female port, the MICRO-B charging port, the TYPE-C female port and the lighting circuit are all connected to the charging protocol chip U1, and the TYPE of the charging protocol chip U1 is set as IP 5310;
the LED indicating circuit is connected to pins 1, 2 and 32 of the charging protocol chip U1 and is used for indicating the electric quantity of the mobile power supply;
the key circuit is connected to an 8 pin of the charging protocol chip U1 and is used for activating the mobile power supply and turning off the lighting circuit;
the lithium battery protection circuit is connected to 14-18 pins of the charging protocol chip U1 and is used for carrying out overcharge and over-discharge protection on the mobile power supply;
the charging detection circuit is connected to pins 19-22 of a charging protocol chip U1 and is used for charging and discharging a lithium battery BT 1;
the TYPE-A female port is connected to pins 19-22, 27 and 28 of a charging protocol chip U1, and the TYPE-A female port is used for discharging of a lithium battery BT 1;
the MICRO-B charging port is connected to the 23 and 24 pins of the charging protocol chip U1 and is used for charging the lithium battery BT 1;
the TYPE-C female port is connected to pins 10, 25, 26, 12 and 13 of a charging protocol chip U1 and is used for charging and discharging of a lithium battery BT 1;
the lighting circuit is connected to the 31 pin of the charging protocol chip U1, and the lighting circuit is used for lighting;
pins 29 and 30 of the charging protocol chip U1 are left empty.
Preferably, the LED indication circuit is provided with four light emitting diodes, i.e. inventive diodes D1, D2, D3 and D4, wherein the cathode of the light emitting diode D1 and the anode of the light emitting diode D2 are all connected to pin 1 of the charging protocol chip U1, the anode of the light emitting diode D1, the cathode of the light emitting diode D3, and the cathode of the light emitting diode D2 are all connected to pin 2 of the charging protocol chip U1, and the cathode of the light emitting diode D3 and the anode of the light emitting diode D4 are all connected to pin 32 of the charging protocol chip U1.
Preferably, the key circuit is provided with a key K1, and the 8 pins of the charging protocol chip U1 are grounded through the key K1.
Preferably, the 9 th pin of the charging protocol chip U1 is connected to the positive electrode of the lithium battery BT1 through a resistor R12, and the 9 th pin of the charging protocol chip U1 is grounded through a capacitor C9.
Preferably, the 14-18 pins of the charging protocol chip U1 are connected in common and then connected with the positive electrode of the lithium battery BT1 through the inductor L1, and the 14-18 pins of the charging protocol chip U1 are connected in common and then grounded through the capacitor C10.
Preferably, the lithium battery protection circuit comprises a lithium battery BT1 and a lithium battery protection chip, the model of the lithium battery protection chip is set to XB7608A, the positive level of the lithium battery BT1 is connected to the 1 pin of the lithium battery protection chip through a resistor R14, the 2 and 3 pins of the lithium battery protection chip are connected to the negative electrode of the lithium battery BT1 after being connected together, and the 4 and 5 pins of the lithium battery protection chip are connected to the ground after being connected together.
Preferably, the charging detection circuit comprises PMOS tubes Q1 and Q2, a resistor R6 and a capacitor C5, pins 19-22 of the charging protocol chip U1 are connected in common and then grounded through a capacitor C5, pins 19-22 of the charging protocol chip U1 are connected in common and then connected in series R6 and connected with a pin 10 of the charging protocol chip U1, S poles of the PMOS tubes Q1 and Q2 are connected in common and connected with pins 19-22 of the charging protocol chip U1, D poles of the PMOS tubes Q1 and Q2 are connected with a pin 10 of the charging protocol chip U1, and G poles of the PMOS tubes Q1 and Q2 are connected with a pin 11 of the charging protocol chip U1.
Preferably, the 1 pin of the female port of TYPE-A is connected with the 19-22 pins of the charging protocol chip U1, and the 2 and 3 pins of the female port of TYPE-A are respectively connected with the 27 and 28 pins of the charging protocol chip U1, and the 4 pin of the charging port of TYPE-A is grounded.
Preferably, the pins 23 and 24 of the charging protocol chip U1 are connected together and then connected to the pin 1 of the MICRO-B charging port, the pin 4 of the MICRO-B charging port is grounded, and the pins 2 and 3 of the MICRO-B charging port are left vacant.
Preferably, pin 1 of the female TYPE-C port is connected to pin 10 of the charging protocol chip U1, and pins 2, 3, 4, and 5 of the female TYPE-C port are respectively connected to pins 10, 25, 36, 12, and 13 of the charging protocol chip U1; 6 pins of the female port of TYPE-C are grounded.
Preferably, the lighting circuit comprises a resistor R11, a resistor R13, a light emitting diode D5 and a PMOS tube Q3, wherein the anode of the lithium battery BT1 is connected with the 31 pin of the charging protocol chip U1 through a resistor R11, the anode of the lithium battery BT1 is connected with the anode of the light emitting diode D5 through a resistor R13, the cathode of the light emitting diode D5 is connected with the S pole of the PMOS tube Q3, the D pole of the light emitting diode of the PMOS tube Q3 is grounded, and the G pole of the PMOS tube Q3 is connected with the 31 pin of the charging protocol chip U1.
Compared with the prior art, the portable power supply has the advantages that the three charge-discharge interfaces of the TYPE-A, MICRO-B charging port and the TYPE-C female port are arranged, so that the compatibility of different charging protocols is realized, and the adaptability of the portable power supply is improved; by arranging the lithium battery protection circuit, the charging and discharging protection of the lithium battery BT1 is realized, and the safety of the mobile power supply is improved; the LED indicating circuit is arranged, so that the electric quantity of the mobile power supply is displayed in a graphical mode, and clearly, the mobile power supply is used as an illuminating lamp by arranging the illuminating circuit, the illuminating circuit is controlled on the basis that redundant keys of the mobile power supply are not increased, the multiple purposes of the mobile power supply are realized, and the cost of the mobile power supply is not excessively increased; the charging detection circuit and the charging and discharging interface of the TYPE-C female port are arranged, so that the same interface is multipurpose, the charging and discharging can be realized, and the interfaces are saved; the invention increases the charging efficiency, realizes one mouth with multiple purposes, saves the production cost, improves the adaptability of the mobile power supply, realizes the multiple purposes of the illuminating lamp and has good market application value.
Drawings
FIG. 1 is a schematic diagram of the circuit topology of the present invention;
FIG. 2 is a circuit diagram of the charging protocol chip U1 according to the present invention;
FIG. 3 is a schematic diagram of a lithium battery protection circuit according to the present invention;
FIG. 4 is a circuit diagram of a TYPE-A female port connection according to the present invention;
FIG. 5 is a schematic diagram of a MICRO-B charging port connection circuit of the present invention;
FIG. 6 is a circuit diagram of the TYPE-C female port connection circuit of the present invention.
Detailed Description
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
Unless defined otherwise, all 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. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, in a first embodiment, a dual-end powered multipurpose mobile power supply circuit includes a charging protocol chip U1, an LED indicating circuit, a key circuit, a lithium battery protection circuit, a charging detection circuit, a TYPE-a female port, a MICRO-B charging port, a TYPE-C female port, and a lighting circuit, where the LED indicating circuit, the key circuit, the lithium battery protection circuit, the charging detection circuit, the TYPE-a female port, the MICRO-B charging port, the TYPE-C female port, and the lighting circuit are all connected to the charging protocol chip U1, and the TYPE of the charging protocol chip U1 is set to be IP 5310;
the LED indicating circuit is connected to pins 1, 2 and 32 of the charging protocol chip U1 and is used for indicating the electric quantity of the mobile power supply;
the key circuit is connected to an 8 pin of the charging protocol chip U1 and is used for activating the mobile power supply and turning off the lighting circuit;
the lithium battery protection circuit is connected to 14-18 pins of the charging protocol chip U1 and is used for carrying out overcharge and over-discharge protection on the mobile power supply;
the charging detection circuit is connected to pins 19-22 of a charging protocol chip U1 and is used for charging and discharging a lithium battery BT 1;
the TYPE-A female port is connected to pins 19-22, 27 and 28 of a charging protocol chip U1, and the TYPE-A female port is used for discharging of a lithium battery BT 1;
the MICRO-B charging port is connected to the 23 and 24 pins of the charging protocol chip U1 and is used for charging the lithium battery BT 1;
the TYPE-C female port is connected to pins 10, 25, 26, 12 and 13 of a charging protocol chip U1 and is used for charging and discharging of a lithium battery BT 1;
the lighting circuit is connected to the 31 pin of the charging protocol chip U1, and the lighting circuit is used for lighting;
pins 29 and 30 of the charging protocol chip U1 are left empty.
Preferably, the LED indication circuit is provided with four light emitting diodes, i.e. inventive diodes D1, D2, D3 and D4, wherein the cathode of the light emitting diode D1 and the anode of the light emitting diode D2 are all connected to pin 1 of the charging protocol chip U1, the anode of the light emitting diode D1, the cathode of the light emitting diode D3, and the cathode of the light emitting diode D2 are all connected to pin 2 of the charging protocol chip U1, and the cathode of the light emitting diode D3 and the anode of the light emitting diode D4 are all connected to pin 32 of the charging protocol chip U1.
Preferably, the 3 pin of the charging protocol chip U1 is connected to the positive electrode of the lithium battery BT1 through a resistor R3 for pull-up processing, or the 3 pin of the charging protocol chip U1 is grounded through a resistor R4 for pull-down processing, or the 3 pin of the charging protocol chip U1 is left empty.
Preferably, the 4-pin of the charging protocol chip U1 is connected to the positive electrode of the lithium battery BT1 through a resistor R5 for pull-up processing, or the 4-pin of the charging protocol chip U1 is grounded through a resistor R7 for pull-down processing, or the 4-pin of the charging protocol chip U1 is left vacant.
Preferably, the 5 pins of the charging protocol chip U1 are grounded through a resistor R8 for low connection, or the 5 pins of the charging protocol chip U1 are left vacant.
Preferably, the 6 pins of the charging protocol chip U1 are connected in parallel with the thermistor NTC through a resistor R10 and then grounded.
Preferably, the 7 pin of the charging protocol chip U1 is grounded.
Preferably, the key circuit is provided with a key K1, and the 8 pins of the charging protocol chip U1 are grounded through the key K1.
Preferably, the 9 th pin of the charging protocol chip U1 is connected to the positive electrode of the lithium battery BT1 through a resistor R12, and the 9 th pin of the charging protocol chip U1 is grounded through a capacitor C9.
Preferably, the 14-18 pins of the charging protocol chip U1 are connected in common and then connected with the positive electrode of the lithium battery BT1 through the inductor L1, and the 14-18 pins of the charging protocol chip U1 are connected in common and then grounded through the capacitor C10.
As shown in fig. 3, preferably, the lithium battery protection circuit includes a lithium battery BT1 and a lithium battery protection chip, the model of the lithium battery protection chip is set to XB7608A, a positive level of the lithium battery BT1 is connected to a pin 1 of the lithium battery protection chip through a resistor R14, pins 2 and 3 of the lithium battery protection chip are connected to a negative electrode of the lithium battery BT1 after being connected together, and pins 4 and 5 of the lithium battery protection chip are connected to ground after being connected together.
Further, the type of the lithium-ion electric protection chip is set to be XB7608A, further, the number of the lithium-ion electric protection chips is set to be at least one, preferably, two lithium-ion electric protection chips are set, and the same pins of the two lithium-ion electric protection chips are connected in common; preferably, the number of the lithium electric protection chips is three, and the same pins of the three lithium electric protection chips are connected in common; by increasing the number of the lithium battery protection chips, the overcharge, overdischarge, overcurrent and load short circuit protection of the high-power mobile power supply is realized.
Preferably, the charging detection circuit comprises PMOS tubes Q1 and Q2, a resistor R6 and a capacitor C5, pins 19-22 of the charging protocol chip U1 are connected in common and then grounded through a capacitor C5, pins 19-22 of the charging protocol chip U1 are connected in common and then connected in series R6 and connected with a pin 10 of the charging protocol chip U1, S poles of the PMOS tubes Q1 and Q2 are connected in common and connected with pins 19-22 of the charging protocol chip U1, D poles of the PMOS tubes Q1 and Q2 are connected with a pin 10 of the charging protocol chip U1, and G poles of the PMOS tubes Q1 and Q2 are connected with a pin 11 of the charging protocol chip U1.
As shown in fig. 4, preferably, the 1 pin of the TYPE-a female port is commonly connected with the 19-22 pins of the charging protocol chip U1, the 2 and 3 pins of the TYPE-a female port are respectively connected with the 27 and 28 pins of the charging protocol chip U1, and the 4 pin of the TYPE-a charging port is grounded.
As shown in fig. 5, preferably, the pins 23 and 24 of the charging protocol chip U1 are connected to the pin 1 of the MICRO-B charging port, the pin 4 of the MICRO-B charging port is grounded, and the pins 2 and 3 of the MICRO-B charging port are left empty.
As shown in fig. 6, preferably, pin 1 of the female TYPE-C port is connected to pin 10 of the charging protocol chip U1, and pins 2, 3, 4, and 5 of the female TYPE-C port are respectively connected to pins 10, 25, 36, 12, and 13 of the charging protocol chip U1; 6 pins of the female port of TYPE-C are grounded.
Preferably, the lighting circuit comprises a resistor R11, a resistor R13, a light emitting diode D5 and a PMOS tube Q3, wherein the anode of the lithium battery BT1 is connected with the 31 pin of the charging protocol chip U1 through a resistor R11, the anode of the lithium battery BT1 is connected with the anode of the light emitting diode D5 through a resistor R13, the cathode of the light emitting diode D5 is connected with the S pole of the PMOS tube Q3, the D pole of the light emitting diode of the PMOS tube Q3 is grounded, and the G pole of the PMOS tube Q3 is connected with the 31 pin of the charging protocol chip U1.
The working principle of the invention is as follows:
when the charging is carried out through the MICRO-B charging port, when an external power adapter is inserted into the MICRO-B charging port, electric energy enters through 23 and 24 pins of a charging protocol chip U1 and is output through 14-18 pins of a charging protocol chip U1, a lithium battery BT1 connected with 14-18 pins of a charging protocol chip U1 is charged, the lithium battery protection chip protects the charging process and prevents overcharge, and when the electric quantity is less than 25%, only a light-emitting diode D1 flickers; when the electric quantity is not less than 25% and less than 50%, only the light-emitting diode D1 is long and bright, and the light-emitting diode D2 flickers; when the electric quantity is not less than 50% and less than 75%, only the light-emitting diodes D1 and D2 are long and bright, and the light-emitting diode D3 flickers; when the electric quantity is not less than 75% but is not full, only the light emitting diodes D1, D2 and D3 are long-lighted, the light emitting diode D4 flickers, and when the electric quantity is full, the light emitting diodes D1-D4 are full-lighted.
When charging through TYPE-C female port, insert TYPE-C female port when external power adapter, whether the 12 and 13 interface detection of charging protocol chip U1 is the TYPE-C interface and inserts, 1 pin of the female port of TYPE-C and the 10 pin electric potentials of the protocol chip that charges rather than being connected altogether are pulled up, the protocol chip that charges detects 10 pin electric potentials and is pulled up, then the inside step-down mode that opens, external power adapter exports through the 14-18 pins of the protocol chip U1 that charges, lithium electricity protection chip protects charging process, and its charging shows like MICRO-B charges mouthful and charges and shows, because TYPE-C agreement supports high current and charges, so increase the efficiency that portable power source charges.
When discharging through the female mouth of TYPE-A, the data line inserts in the female mouth of TYPE-A, and the data line other end is connected with electrical apparatus, and lithium cell BT1 charges by TYPE-A through the protocol chip of charging with electrical apparatus, and lithium cell BT 1's electric current gets into the 9 pins of the protocol chip of charging and gets into, is exported by the 19-22 pins of the protocol chip of charging.
When discharging through the female mouth of TYPE-C, the data line inserts in the female mouth of TYPE-C, and the data line other end is connected with electrical apparatus, whether 12 and 13 interface detection of charging protocol chip U1 insert for the TYPE-C interface, and the 25 and 26 pins of charging protocol chip are used for matching the voltage with electrical apparatus, when can accept the high current charging protocol with electrical apparatus, the charging protocol chip carries out high current discharge to electrical apparatus, 11 pins department low potential of charging protocol chip, PMOS pipe Q1 and Q2 all switch on, the 19-22 pins of charging protocol chip carry out the output power supply.
According to the working principle of the lighting circuit, after the key is pressed for 2s for a long time, the 31 pin of the charging protocol chip is pulled down, the PMOS tube Q3 is conducted, the light emitting diode D5 is lightened, after the key is pressed for 2s for a long time again, the 31 pin of the charging protocol chip is pulled up, the PMOS tube Q3 is cut off, and the light emitting diode D5 is extinguished.
The second embodiment is different from the first embodiment in that the lithium battery BT1 is set to 4.4V, the 3 pin of the charging protocol chip U1 is connected to the positive electrode of the lithium battery BT1 through a resistor R3, the 4 pin of the charging protocol chip U1 is connected to the positive electrode of the lithium battery BT1 through a resistor R5, the voltage of the lithium battery BT1 is discharged to 4.02V, and the LED indicating circuit changes from 4 lamps to 3 lamps; the voltage of the lithium battery BT1 is discharged to 3.84V, and the LED indicating circuit is changed from a 3 lamp to a 2 lamp; the voltage of the lithium battery BT1 is discharged to 3.78V, and the LED indicating circuit is changed from a 2 lamp to a 1 lamp.
The difference between the third embodiment and the second embodiment is that the 4 pins of the charging protocol chip U1 are floating, the voltage of the lithium battery BT1 is discharged to 3.66V, and the LED lamp level is changed from 2 lamps to 1 lamp.
The fourth embodiment is different from the second embodiment in that the 4 pin of the charging protocol chip U1 is grounded, the voltage of the lithium battery BT1 is discharged to 3.78V, and the LED lamp level is changed from 3 lamps to 2 lamps; the voltage of the lithium battery BT1 is discharged to 3.6V, and the LED lamp level is changed from 2 lamps to 1 lamp.
The fifth embodiment is different from the second, third and fourth embodiments in that the lithium battery BT1 is set to 4.35V, and the 3 pin of the charging protocol chip U1 is grounded.
Sixth embodiment, different from the previous embodiments, the lithium battery BT1 is set to 4.2V, the 3 pin of the charging protocol chip U1 is idle, the 4 pin of the charging protocol chip U1 is connected to the positive electrode of the lithium battery BT1 through the resistor R5, the voltage of the lithium battery BT1 is discharged to 4.02V, and the LED indication circuit is switched from 4 lamp to 3 lamp; the voltage of the lithium battery BT1 is discharged to 3.9V, and the LED indicating circuit is changed from a 3 lamp to a 2 lamp; the voltage of the lithium battery BT1 is discharged to 3.78V, and the LED indicating circuit is changed from a 2 lamp to a 1 lamp.
The seventh embodiment is different from the sixth embodiment in that the 4 pins of the charging protocol chip U1 are idle, the voltage of the lithium battery BT1 is discharged to 3.96V, and the LED indicating circuit is changed from 4 lamps to 3 lamps; the voltage of the lithium battery BT1 is discharged to 3.78V, and the LED indicating circuit is changed from a 3 lamp to a 2 lamp; the voltage of the lithium battery BT1 is discharged to 3.6V, and the LED indicating circuit is changed from a 2 lamp to a 1 lamp;
the embodiment is different from the seventh embodiment in that the 4 pin of the charging protocol chip U1 is grounded, the voltage of the lithium battery BT1 is discharged to 3.72V, and the LED indication circuit is changed from 3 to 2.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A dual-end-powered multipurpose mobile power supply circuit is characterized by comprising a charging protocol chip U1, an LED indicating circuit, a key circuit, a lithium battery protection circuit, a charging detection circuit, a TYPE-A female port, a MICRO-B charging port, a TYPE-C female port and a lighting circuit, wherein the LED indicating circuit, the key circuit, the lithium battery protection circuit, the charging detection circuit, the TYPE-A female port, the MICRO-B charging port, the TYPE-C female port and the lighting circuit are all connected to the charging protocol chip U1, and the TYPE of the charging protocol chip U1 is set as IP 5310;
the LED indicating circuit is connected to pins 1, 2 and 32 of the charging protocol chip U1 and is used for indicating the electric quantity of the mobile power supply;
the key circuit is connected to an 8 pin of the charging protocol chip U1 and is used for activating the mobile power supply and turning off the lighting circuit;
the lithium battery protection circuit is connected to 14-18 pins of the charging protocol chip U1 and is used for carrying out overcharge and over-discharge protection on the mobile power supply;
the charging detection circuit is connected to pins 19-22 of a charging protocol chip U1 and is used for charging and discharging a lithium battery BT 1;
the TYPE-A female port is connected to pins 19-22, 27 and 28 of a charging protocol chip U1, and the TYPE-A female port is used for discharging of a lithium battery BT 1;
the MICRO-B charging port is connected to the 23 and 24 pins of the charging protocol chip U1 and is used for charging the lithium battery BT 1;
the TYPE-C female port is connected to pins 10, 25, 26, 12 and 13 of a charging protocol chip U1 and is used for charging and discharging of a lithium battery BT 1;
the lighting circuit is connected to the 31 pin of the charging protocol chip U1, and the lighting circuit is used for lighting;
pins 29 and 30 of the charging protocol chip U1 are left empty.
2. The dual-end-powered multipurpose mobile power supply circuit as claimed in claim 1, wherein the LED indication circuit is provided with four light emitting diodes, i.e. inventive diodes D1, D2, D3 and D4, a cathode of the light emitting diode D1 and an anode of the light emitting diode D2 are all connected to a 1 pin of the charging protocol chip U1, an anode of the light emitting diode D1, a cathode of the light emitting diode D3 and an anode of the light emitting diode D2 are all connected to a 2 pin of the charging protocol chip U1, and a cathode of the light emitting diode D3 and an anode of the light emitting diode D4 are all connected to a 32 pin of the charging protocol chip U1.
3. The dual-terminal power supply multipurpose mobile power supply circuit of claim 1, wherein the key circuit is provided with a key K1, and the 8-pin of the charging protocol chip U1 is grounded through the key K1.
4. The dual-terminal power supply multipurpose mobile power supply circuit of claim 1, wherein the pin 9 of the charging protocol chip U1 is connected to the positive electrode of the lithium battery BT1 through a resistor R12, and the pin 9 of the charging protocol chip U1 is grounded through a capacitor C9.
5. The dual-terminal power supply multipurpose mobile power supply circuit of claim 1, wherein the pins 14-18 of the charging protocol chip U1 are connected together and then connected with the positive electrode of the lithium battery BT1 through an inductor L1, and the pins 14-18 of the charging protocol chip U1 are connected together and then grounded through a capacitor C10.
6. The multi-purpose mobile power supply circuit with double power supplies according to claim 1, wherein the lithium battery protection circuit comprises a lithium battery BT1 and a lithium battery protection chip, the model of the lithium battery protection chip is set to XB7608A, the positive pole of the lithium battery BT1 is connected to the 1 pin of the lithium battery protection chip through a resistor R14, the 2 and 3 pins of the lithium battery protection chip are connected to the negative pole of the lithium battery BT1 after being connected together, and the 4 and 5 pins of the lithium battery protection chip are connected to the ground after being connected together.
7. The dual-end-powered multipurpose mobile power supply circuit of claim 1, wherein the charging detection circuit comprises PMOS tubes Q1 and Q2, a resistor R6 and a capacitor C5, pins 19-22 of the charging protocol chip U1 are connected in common and then grounded through a capacitor C5, pins 19-22 of the charging protocol chip U1 are connected in common and then connected in series with an R6 and connected with a 10 pin of the charging protocol chip U1, S poles of the PMOS tubes Q1 and Q2 are connected in common and connected with pins 19-22 of the charging protocol chip U1, D poles of the PMOS tubes Q1 and Q2 are connected with a 10 pin of the charging protocol chip U1, and G poles of the PMOS tubes Q1 and Q2 are connected with a 11 pin of the charging protocol chip U1.
8. The dual-end-powered multi-purpose mobile power supply circuit of claim 1, wherein the 1 pin of the female TYPE-a port is commonly connected to the 19-22 pins of the charging protocol chip U1, the 2 and 3 pins of the female TYPE-a port are respectively connected to the 27 and 28 pins of the charging protocol chip U1, and the 4 pin of the charging TYPE-a port is grounded.
9. The dual-terminal power supply multipurpose mobile power supply circuit of claim 1, wherein the pins 23 and 24 of the charging protocol chip U1 are connected to the pin 1 of the MICRO-B charging port after being connected together, the pin 4 of the MICRO-B charging port is connected to ground, and the pins 2 and 3 of the MICRO-B charging port are left vacant.
10. The dual-terminal power supply multipurpose mobile power supply circuit of claim 1, wherein pin 1 of the female TYPE-C port is connected to pin 10 of the charging protocol chip U1, and pins 2, 3, 4, and 5 of the female TYPE-C port are respectively connected to pins 10, 25, 36, 12, and 13 of the charging protocol chip U1; 6 pins of the TYPE-C female port are grounded;
the lighting circuit comprises a resistor R11, a resistor R13, a light emitting diode D5 and a PMOS tube Q3, wherein the anode of a lithium battery BT1 is connected with a 31 pin of a charging protocol chip U1 through a resistor R11, the anode of the lithium battery BT1 is connected with the anode of a light emitting diode D5 through a resistor R13, the cathode of the light emitting diode D5 is connected with the S pole of the PMOS tube Q3, the D pole of the light emitting diode of the PMOS tube Q3 is grounded, and the G pole of the PMOS tube Q3 is connected with the 31 pin of the charging protocol chip U1.
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| CN201911026441.8A CN110649680A (en) | 2019-10-26 | 2019-10-26 | Dual-end power supply multipurpose mobile power supply circuit |
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| CN201911026441.8A CN110649680A (en) | 2019-10-26 | 2019-10-26 | Dual-end power supply multipurpose mobile power supply circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147564A1 (en) * | 2020-01-23 | 2021-07-29 | 南京德朔实业有限公司 | Utility light, combination of battery pack and utility light, and electric tool |
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| CN103094945A (en) * | 2012-10-11 | 2013-05-08 | 安徽天堂唯高塑业科技有限公司 | Mobile power source circuit |
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Application publication date: 20200103 |