Television with multifunctional charge and discharge management system
Technical Field
The invention relates to a television with a multifunctional charge and discharge management system.
Background
The traditional television and other electrical appliances only have the basic functions of a television, and do not have the functions of charging a battery by an external power supply, LED illumination, quick charging of a mobile phone (QC 3.0 quick charging protocol) and the like. The function is single, can not satisfy people's actual demand.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a television with a multifunctional charge and discharge management system, which has the following technical scheme:
the television of the multifunctional charging and discharging management system is characterized in that a television driving board is arranged in the television, the television driving board drives an LED lamp to illuminate through an LED illumination management circuit, a mobile phone is charged through a mobile phone charging management circuit, a 18650 battery pack is charged through a battery charging management circuit, and a liquid crystal display module and a loudspeaker are driven through a DC power supply management circuit.
The LED lighting management circuit comprises a power management chip UM1, a 12V standard DC voltage is input to a 1 st pin of the power management chip UM1 after being filtered by a capacitor CM7, one end of the capacitor CM8 is connected to a 2 nd pin of the power management chip UM1, the other end of the capacitor CM8 is connected to a 3 rd pin of the power management chip UM1, one end of the capacitor CM7 is grounded, and a 5 th pin of the power management chip UM1 is grounded after being connected to the ground through a series resistor RM 10; after the resistor RM9, the resistor RM18, the resistor RM11 and the capacitor CM9 are connected in parallel, one end of the resistor RM9 is connected to the 4 th pin of the power management chip UM1, the other end of the resistor RM9 is connected to the STB port of the circuit board, the collector of the NPN transistor QM1 is connected with one end of the resistor RM18, the emitter of the NPN transistor QM is connected with one end of the capacitor CM9 and grounded, the base is connected with one end of the resistor RM11, a resistor RM12 is connected in series between the other end of the resistor RM9 and the other end of the resistor RM18, and the other end of the capacitor CM9 is connected to a button PWR_ON/OFF_A;
the 12V standard DC voltage is input to the 1 st pin of the power management chip UM2 after being filtered by the capacitor CM11, one end of the capacitor CM12 is connected to the 2 nd pin of the power management chip UM2, the other end of the capacitor CM12 is connected to the 3 rd pin of the power management chip UM2, one end of the capacitor CM11 is grounded, and the 5 th pin of the power management chip UM2 is grounded after being connected to the ground through the series resistor RM 14; after the resistor RM13, the resistor RM19, the resistor RM15 and the capacitor CM13 are connected in parallel, one end of the resistor RM13 is connected to the 4 th pin of the power management chip UM2, the other end is connected to the STB port of the circuit board, the collector of the NPN transistor QM2 is connected with one end of the resistor RM19, the emitter is connected with one end of the capacitor CM13 and grounded, the base is connected with one end of the resistor RM15, a resistor RM17 is connected in series between the other end of the resistor RM13 and the other end of the resistor RM19, the other end of the capacitor CM13 is connected to the button PWR_ON/OFF_B, the 6 th pin of the power management chip UM2 outputs voltage, and the voltage is filtered to the socket CN2 after being connected in parallel through the capacitor CM6 and the capacitor CM 51.
The mobile phone charging management circuit comprises a voltage management chip UD4, SYS_VCC standard DC voltage is input to a 3 RD pin of the voltage management chip UD4 after being subjected to capacitance-to-ground filtering through a capacitor CD2 and a capacitor CD59 in parallel connection, one end of a resistor RD27 is connected to the 3 RD pin of the voltage management chip UD4, the other end of the resistor RD27 is connected with a 5 th pin of the voltage management chip UD4 and one end of a resistor RD28, and the other end of the resistor RD28 is connected with a 1 st pin of the voltage management chip UD4 and is grounded at the same time; the capacitor CD32 is connected with the 6 th pin of the voltage management chip UD4, the other end is connected with the 2 nd pin of the voltage management chip UD4 and one end of the resonant inductor L4, the other end of the resonant inductor L4 is connected with one end of the capacitor CD38 and one end of the resistor RD26, the other end of the capacitor CD38 is connected with the 4 th pin of the voltage management chip UD4, one end of the resistor RD29 and one end of the resistor RD30, the other end of the resistor RD29 is connected with the other end of the resistor RD26, the 2 nd pin of the voltage management chip UD4 outputs voltage, the voltage is filtered in parallel through the capacitor CD33, the capacitor CD34 and the polar capacitor ED4 and then outputs 12V/USB voltage, the 12V/USB voltage is connected with the socket CN1B through an electronic wire, the positive electrode of the polar capacitor ED4 is connected with the socket CN1A, the negative electrode is grounded, the 12V/USB voltage is input to the fuse F1 through the socket CN1B, the 12V/USB voltage is filtered in parallel through the polar capacitor CE1 and then input to the power management chip U3, and the positive electrode of the capacitor D4 is connected with the fuse F1 through the cathode 4; the 1 st pin of power management chip U3 is connected with the 3 rd pin of protocol chip U1, resonant inductor L2's one end is connected with the 5 th pin of power management chip U3, 6 th pin and the one end of electric capacity C7, the other end is connected in series between the 2 nd pin of power management chip U3 and 3 rd pin through parallelly connected resistance R2 and resistance R7, the other end of electric capacity C7 is connected with the one end of resistance R11, the other end of resistance R11 links to each other with the 7 th pin of power management chip U3, the 3 rd pin links to each other and ground, the voltage that power management chip U3 output is through parallelly connected polarity electric capacity CE3 and electric capacity C5 to ground filtration before exporting socket USB1, the one end of resistance R8 is connected with the one end of resistance R2 and the positive pole of polarity electric capacity CE3, the negative pole of polarity electric capacity CE3 is grounded through serially connected resistance R9, the one end of resistance R1 is connected with the positive pole of polarity electric capacity CE3 and socket 1, the other end inserts the 5 th pin of power management chip U3, the other end of electric capacity C6 is connected with the ground connection between power management chip U3 and the 7 th pin of power management chip U1, the other end is connected with the USB1, the USB1 and the USB 2 th pin is connected with the USB 2.
The battery charging management comprises a charging chip UD10, wherein a DC power supply outside the charging chip UD10 is connected to a P1 port, the P1 port is connected to a drain electrode of a MOS tube QD7 through a switch CN7, a grid electrode of the MOS tube QD7 is connected IN series with a resistor RD44 and then grounded, and the source electrode is filtered to the ground through a capacitor CD62, a capacitor CD66 and a capacitor CD47 which are connected IN parallel to output DC_IN voltage; the DC_IN voltage outputs stable voltage to the MOS tube QD4, the PDONOFF network is connected with the base electrode of the triode QD6 after passing through a series resistor RD52, the collector electrode of the triode QD6 is connected with one end of a resistor RD40 and one end of a resistor RD42 through a series resistor RD49, the emitter electrode of the triode QD6 is grounded, one end of the resistor RD42 is connected with one end of a capacitor CD37 and the grid electrode of the MOS tube QD4, the drain electrode of the MOS tube QD4 outputs VCC_IN voltage after filtering the ground through a parallel capacitor CD35, and the other end of the resistor RD40 and the other end of the capacitor CD37 are connected with the source electrode of the MOS tube QD 4; after the VCC_IN voltage is connected to the drains of the MOS transistors QD11 and QD10, the gates of the MOS transistors QD11 and QD10 are connected to the 4 th pin of the charging chip UD10 through a series resistor RD55, the 3 RD pin of the charging chip UD10 is connected to the source of the MOS transistor QD11 and the source of the MOS transistor QD10 through a series resistor RD53, the drain of the MOS transistor QD11 is connected to one end of a capacitor CD6, the other end of the capacitor CD6 is grounded, the 1 st pin of the charging chip UD10 is connected to one end of a capacitor CD84 and one end of a resistor RD81, the other end of the resistor RD81 is connected to the drain of the MOS transistor QD10, one end of a capacitor CD83 and the 2 nd pin of the charging chip UD10, the other end of the capacitor CD83 and the other end of the capacitor CD84 are grounded, the polarity capacitor ED5 is connected IN parallel with the capacitor CD65, the positive electrode of the resistor RD81 is grounded, one end of the capacitor CD65 is connected to the drain of the MOS transistor QD12, the gate of the MOS transistor QD12 is connected to the first 18 pin of the charging chip QD10 through a series resistor RD56, the other end of the MOS transistor QD12 is connected to the first end of the capacitor D18 pin of the charging chip QD10, the other end of the capacitor CD13 is connected to the first end of the capacitor CD7, and the first end of the capacitor CD7 is connected to the capacitor CD7; the other end of the resonant inductor LD5 is connected to one end of the resistor RD102 and one end of the resistor RD73, the other end of the resistor RD102 is connected to one end of the capacitor CD86 and the 13 th pin of the charging chip UD10,
the other end of the capacitor CD86 is connected with one end of the capacitor CD87 and then grounded, the other end of the capacitor CD87 is connected with the 12 th pin of the charging chip UD10 and one end of the resistor RD103, the other end of the resistor RD103 is connected with the other end of the resistor RD73, the polarity capacitor ED62, the capacitor CD67 and the capacitor CD57 are connected in parallel, the negative electrode of the polarity capacitor ED62 is grounded, the positive electrode of the polarity capacitor ED62 is connected with the other end of the resistor RD73, the capacitor CD57 is connected with a BARRY_OUT power supply, and the battery pack is charged 18650 after passing through the mechanical switch CN61 and the socket CNB1 in sequence; the 10 th pin of the charging chip UD10 is connected with a resistor RD71 in series and then connected with the port of the STB; the 8 th pin of the charging chip UD10 is connected into an SDA port after passing through a series resistor RD50, the 9 th pin is connected into an SCL port after passing through a series resistor RD86, a capacitor CD49 is connected in parallel with a capacitor CD70, one end of the capacitor CD49 is connected between the 8 th pin of the charging chip UD10 and the resistor RD50, one end of the capacitor CD70 is connected between the 9 th pin of the charging chip UD10 and the resistor RD86, and the other ends of the capacitor CD49 and the capacitor CD70 are grounded; the 6 th pin of the charging chip UD10 is connected to one end of the capacitor CD85, one end of the resistor RD66 and one end of the resistor RD78, the other end of the capacitor CD85 and the other end of the resistor RD66 are connected to one end of the capacitor CD71 and then grounded, the other end of the capacitor CD71 is connected to the 20 th pin of the power chip UD10 and one end of the resistor RD82, the other end of the resistor RD82 is connected to the negative electrode of the diode DD61, the positive electrode of one diode DD61 is connected to vcc_in voltage, the positive electrode of the other diode DD61 is connected to 18650 battery pack, and the other end of the resistor RD78 is connected to vcc_in voltage.
5. The television of the multifunctional charge and discharge management system according to claim 1, wherein the DC power management circuit comprises a power management chip UD1, wherein vcc_in power is connected to the anodes of a diode DD3 and a diode DD7 after being subjected to capacitive filtering by a CD42, is connected to the anodes of the diode DD3 and the diode DD7 after being subjected to capacitive filtering by an electrolytic capacitor ED2, and is output to a sys_vcc power network, the barrey_out power is connected to the anodes of a diode DD4 and a diode DD8 after being subjected to capacitive filtering by a capacitor CD76, and the barrey_out power is output to the sys_vcc power network after being subjected to capacitive filtering by an electrolytic capacitor ED 2; the SYS_VCC voltage is filtered to the ground after passing through the parallel connection of the capacitor CD4, the capacitor CD8 and the capacitor CD9, and is input to the 4 th, 5 th and 6 th pins of the power management chip UD1, the 1 st pin and the 10 th pin of the power management chip UD1 are grounded, one end of the resistor RD2 is connected with the 4 th, 5 th and 6 th pins of the power management chip UD1 and one end of the resistor RD1, the other end is connected with one end of the resistor RD23, one end of the capacitor CD 25, one end of the capacitor CD30, the first 10 th, 12 th pins of the power management chip UD1, one end of the resistor RD18 and one end of the resistor RD3, the other end of the resistor RD23 is connected to an EN port, the other end of the resistor RD3 is connected with one end of the capacitor CD31 and grounded, the other end of the capacitor CD31 is connected to the first pin 8 th pin of the power management chip UD1 and the other end of the electronic RD18, the other end of the resistor RD1 is connected to the first pin 11 th pin of the power management chip UD1, one end of the other end of the capacitor RD3 is connected to the first pin 7 LD 1, the other end of the capacitor RD6 and the other end of the capacitor RD2 is connected to the first pin of the capacitor UD1, the other end of the capacitor RD6 and the capacitor RD2 is connected to the capacitor 3, the other end of the capacitor 3 is connected to the capacitor 3 and the capacitor 3 is connected to the capacitor 3, the capacitor is connected to the capacitor 3 and the capacitor is connected to the capacitor.
The invention has the advantages that: the electric appliance is not influenced and limited by the mains supply, and under the condition of power failure or unstable and shortage of the mains supply, the electric appliance can be charged by external DC power sources such as solar energy, wind power generation sets and the like, so that the battery pack in the electric appliance can be used for maintaining normal operation for a certain time. Meanwhile, when the commercial power is supplied, the battery pack can be automatically charged, the battery pack can be charged while being supported to work, the battery can be automatically cut off from discharging, the service life of the battery is ensured, and the standby charging can also be supported. Under the condition that normal operation of an electric appliance is not affected, the three functions of an LED lighting system, a mobile phone rapid charging system and a battery pack charging are integrated into a whole, and the integrated television is integrated into a television, so that a customer can enjoy the functions of the multifunctional charging and discharging system on the television.
Drawings
Fig. 1 is a block diagram of the main structure of the present invention.
Fig. 2 is a circuit diagram of LED lighting management.
Fig. 3 is a circuit diagram of a mobile phone charging management.
Fig. 4 is a battery charge management circuit diagram.
Fig. 5 is a DC power management circuit diagram.
Detailed Description
The invention will be further described with reference to specific embodiments, and advantages and features of the invention will become apparent from the description. These examples are merely exemplary and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present invention may be made without departing from the spirit and scope of the present invention, but these changes and substitutions fall within the scope of the present invention.
Referring to fig. 1 to 5, the invention relates to a television with a multifunctional charge and discharge management system, wherein a television driving board is arranged in the television, the television driving board drives an LED lamp to illuminate through an LED illumination management circuit, a mobile phone is charged through a mobile phone charge management circuit, a 18650 battery pack is charged through a battery charge management circuit, and a liquid crystal screen module and a loudspeaker are driven through a DC power management circuit.
The LED lighting management circuit comprises a power management chip UM1, a 12V standard DC voltage is input to a 1 st pin of the power management chip UM1 after being filtered by a capacitor CM7, one end of the capacitor CM8 is connected to a 2 nd pin of the power management chip UM1, the other end of the capacitor CM8 is connected to a 3 rd pin of the power management chip UM1, one end of the capacitor CM7 is grounded, and a 5 th pin of the power management chip UM1 is grounded after being connected to the ground through a series resistor RM 10; after the resistor RM9, the resistor RM18, the resistor RM11 and the capacitor CM9 are connected in parallel, one end of the resistor RM9 is connected to the 4 th pin of the power management chip UM1, the other end of the resistor RM9 is connected to the STB port of the circuit board, the collector of the NPN transistor QM1 is connected with one end of the resistor RM18, the emitter of the NPN transistor QM is connected with one end of the capacitor CM9 and grounded, the base is connected with one end of the resistor RM11, a resistor RM12 is connected in series between the other end of the resistor RM9 and the other end of the resistor RM18, and the other end of the capacitor CM9 is connected to a button PWR_ON/OFF_A;
the 12V standard DC voltage is input to the 1 st pin of the power management chip UM2 after being filtered by the capacitor CM11, one end of the capacitor CM12 is connected to the 2 nd pin of the power management chip UM2, the other end of the capacitor CM12 is connected to the 3 rd pin of the power management chip UM2, one end of the capacitor CM11 is grounded, and the 5 th pin of the power management chip UM2 is grounded after being connected to the ground through the series resistor RM 14; after the resistor RM13, the resistor RM19, the resistor RM15 and the capacitor CM13 are connected in parallel, one end of the resistor RM13 is connected to the 4 th pin of the power management chip UM2, the other end is connected to the STB port of the circuit board, the collector of the NPN transistor QM2 is connected with one end of the resistor RM19, the emitter is connected with one end of the capacitor CM13 and grounded, the base is connected with one end of the resistor RM15, a resistor RM17 is connected in series between the other end of the resistor RM13 and the other end of the resistor RM19, the other end of the capacitor CM13 is connected to the button PWR_ON/OFF_B, the 6 th pin of the power management chip UM2 outputs voltage, and the voltage is filtered to the socket CN2 after being connected in parallel through the capacitor CM6 and the capacitor CM 51.
The mobile phone charging management circuit comprises a voltage management chip UD4, SYS_VCC standard DC voltage is input to a 3 RD pin of the voltage management chip UD4 after being subjected to capacitance-to-ground filtering through a capacitor CD2 and a capacitor CD59 in parallel connection, one end of a resistor RD27 is connected to the 3 RD pin of the voltage management chip UD4, the other end of the resistor RD27 is connected with a 5 th pin of the voltage management chip UD4 and one end of a resistor RD28, and the other end of the resistor RD28 is connected with a 1 st pin of the voltage management chip UD4 and is grounded at the same time; the capacitor CD32 is connected with the 6 th pin of the voltage management chip UD4, the other end is connected with the 2 nd pin of the voltage management chip UD4 and one end of the resonant inductor L4, the other end of the resonant inductor L4 is connected with one end of the capacitor CD38 and one end of the resistor RD26, the other end of the capacitor CD38 is connected with the 4 th pin of the voltage management chip UD4, one end of the resistor RD29 and one end of the resistor RD30, the other end of the resistor RD29 is connected with the other end of the resistor RD26, the 2 nd pin of the voltage management chip UD4 outputs voltage, the voltage is filtered in parallel through the capacitor CD33, the capacitor CD34 and the polar capacitor ED4 and then outputs 12V/USB voltage, the 12V/USB voltage is connected with the socket CN1B through an electronic wire, the positive electrode of the polar capacitor ED4 is connected with the socket CN1A, the negative electrode is grounded, the 12V/USB voltage is input to the fuse F1 through the socket CN1B, the 12V/USB voltage is filtered in parallel through the polar capacitor CE1 and then input to the power management chip U3, and the positive electrode of the capacitor D4 is connected with the fuse F1 through the cathode 4; the 1 st pin of power management chip U3 is connected with the 3 rd pin of protocol chip U1, resonant inductor L2's one end is connected with the 5 th pin of power management chip U3, 6 th pin and the one end of electric capacity C7, the other end is connected in series between the 2 nd pin of power management chip U3 and 3 rd pin through parallelly connected resistance R2 and resistance R7, the other end of electric capacity C7 is connected with the one end of resistance R11, the other end of resistance R11 links to each other with the 7 th pin of power management chip U3, the 3 rd pin links to each other and ground, the voltage that power management chip U3 output is through parallelly connected polarity electric capacity CE3 and electric capacity C5 to ground filtration before exporting socket USB1, the one end of resistance R8 is connected with the one end of resistance R2 and the positive pole of polarity electric capacity CE3, the negative pole of polarity electric capacity CE3 is grounded through serially connected resistance R9, the one end of resistance R1 is connected with the positive pole of polarity electric capacity CE3 and socket 1, the other end inserts the 5 th pin of power management chip U3, the other end of electric capacity C6 is connected with the ground connection between power management chip U3 and the 7 th pin of power management chip U1, the other end is connected with the USB1, the USB1 and the USB 2 th pin is connected with the USB 2.
The 12V/USB voltage is connected in series with a fuse, is filtered by connecting a polar capacitor CE1 and a capacitor C1 in parallel to the ground, and is then input to a 4 th pin of a power management chip U3, is connected in series between a 2 nd pin and a 3 rd pin of the power management chip UM2 after being connected with a resistor R2 in parallel with a resistor R7 through a resonant inductor L2, is used for detecting output current by sampling the pressure difference between the 2 nd pin and the 3 rd pin, is connected in series with a resistor R9 through a resistor R8 to form a voltage feedback circuit, the feedback voltage is provided by a protocol chip U1 (QC 3.0 protocol chip), the voltage output by the power management chip U3 is filtered by connecting the CE3 and the C5 capacitor in parallel to the ground and is then output to the USB1, and the mobile phone is charged through a USB1 socket. The mobile phone with QC3.0 protocol charges to output Q3.0 protocol voltage, and the mobile phone without QC3.0 protocol charges to output standard 5V voltage.
The battery charging management comprises a charging chip UD10, wherein a DC power supply outside the charging chip UD10 is connected to a P1 port, the P1 port is connected to a drain electrode of a MOS tube QD7 through a switch CN7, a grid electrode of the MOS tube QD7 is connected IN series with a resistor RD44 and then grounded, and the source electrode is filtered to the ground through a capacitor CD62, a capacitor CD66 and a capacitor CD47 which are connected IN parallel to output DC_IN voltage; the DC_IN voltage outputs stable voltage to the MOS tube QD4, the PDONOFF network is connected with the base electrode of the triode QD6 after passing through a series resistor RD52, the collector electrode of the triode QD6 is connected with one end of a resistor RD40 and one end of a resistor RD42 through a series resistor RD49, the emitter electrode of the triode QD6 is grounded, one end of the resistor RD42 is connected with one end of a capacitor CD37 and the grid electrode of the MOS tube QD4, the drain electrode of the MOS tube QD4 outputs VCC_IN voltage after filtering the ground through a parallel capacitor CD35, and the other end of the resistor RD40 and the other end of the capacitor CD37 are connected with the source electrode of the MOS tube QD 4; after the VCC_IN voltage is connected to the drains of the MOS transistors QD11 and QD10, the gates of the MOS transistors QD11 and QD10 are connected to the 4 th pin of the charging chip UD10 through a series resistor RD55, the 3 RD pin of the charging chip UD10 is connected to the source of the MOS transistor QD11 and the source of the MOS transistor QD10 through a series resistor RD53, the drain of the MOS transistor QD11 is connected to one end of a capacitor CD6, the other end of the capacitor CD6 is grounded, the 1 st pin of the charging chip UD10 is connected to one end of a capacitor CD84 and one end of a resistor RD81, the other end of the resistor RD81 is connected to the drain of the MOS transistor QD10, one end of a capacitor CD83 and the 2 nd pin of the charging chip UD10, the other end of the capacitor CD83 and the other end of the capacitor CD84 are grounded, the polarity capacitor ED5 is connected IN parallel with the capacitor CD65, the positive electrode of the resistor RD81 is grounded, one end of the capacitor CD65 is connected to the drain of the MOS transistor QD12, the gate of the MOS transistor QD12 is connected to the first 18 pin of the charging chip QD10 through a series resistor RD56, the other end of the MOS transistor QD12 is connected to the first end of the capacitor D18 pin of the charging chip QD10, the other end of the capacitor CD13 is connected to the first end of the capacitor CD7, and the first end of the capacitor CD7 is connected to the capacitor CD7; the other end of the resonant inductor LD5 is connected to one end of the resistor RD102 and one end of the resistor RD73, the other end of the resistor RD102 is connected to one end of the capacitor CD86 and the 13 th pin of the charging chip UD10,
the other end of the capacitor CD86 is connected with one end of the capacitor CD87 and then grounded, the other end of the capacitor CD87 is connected with the 12 th pin of the charging chip UD10 and one end of the resistor RD103, the other end of the resistor RD103 is connected with the other end of the resistor RD73, the polarity capacitor ED62, the capacitor CD67 and the capacitor CD57 are connected in parallel, the negative electrode of the polarity capacitor ED62 is grounded, the positive electrode of the polarity capacitor ED62 is connected with the other end of the resistor RD73, the capacitor CD57 is connected with a BARRY_OUT power supply, and the battery pack is charged 18650 after passing through the mechanical switch CN61 and the socket CNB1 in sequence; the 10 th pin of the charging chip UD10 is connected with a resistor RD71 in series and then connected with the port of the STB; the 8 th pin of the charging chip UD10 is connected into an SDA port after passing through a series resistor RD50, the 9 th pin is connected into an SCL port after passing through a series resistor RD86, a capacitor CD49 is connected in parallel with a capacitor CD70, one end of the capacitor CD49 is connected between the 8 th pin of the charging chip UD10 and the resistor RD50, one end of the capacitor CD70 is connected between the 9 th pin of the charging chip UD10 and the resistor RD86, and the other ends of the capacitor CD49 and the capacitor CD70 are grounded; the 6 th pin of the charging chip UD10 is connected to one end of the capacitor CD85, one end of the resistor RD66 and one end of the resistor RD78, the other end of the capacitor CD85 and the other end of the resistor RD66 are connected to one end of the capacitor CD71 and then grounded, the other end of the capacitor CD71 is connected to the 20 th pin of the power chip UD10 and one end of the resistor RD82, the other end of the resistor RD82 is connected to the negative electrode of the diode DD61, the positive electrode of one diode DD61 is connected to vcc_in voltage, the positive electrode of the other diode DD61 is connected to 18650 battery pack, and the other end of the resistor RD78 is connected to vcc_in voltage.
The PDONOFF network gives a high level, a switching circuit is formed by RD52 resistor and triode QD6, a low level is reversely output, MOS tube QD4 is controlled by limiting current of series resistor RD49 and resistor RD42, and a time sequence is controlled by parallel connection of resistor RD40 and capacitor CD37, so that MOS tube QD4 is conducted to output VCC_IN voltage. The VCC_IN voltage is input into the MOS tube QD11, the MOS tube QD11 is controlled by a UD10 charging chip, the battery charging voltage is output through a circuit formed by a resistor RD4 and a capacitor CD68 and a resonant inductor LD5, the battery charging voltage is output through a power supply filter circuit formed by a series current limiting resistor RD73 and an electrolytic capacitor ED62, a capacitor CD67 and a capacitor CD57, a mechanical switch CN61 is conducted, and the battery pack is charged through a socket CNB 1. In the charging process, charging indication prompts in two states are generated, and in the state 1, the electric appliance is turned on, charging lightning icon prompts can be generated on a screen, and charging saturation icon prompts can also be generated. And 2, turning off the electric appliance, prompting the charging of the electric appliance by the LED indicator lamp, turning off the charging indicator lamp when the charging is saturated, and turning on the saturation indicator lamp.
The DC power management circuit comprises a power management chip UD1, wherein a VCC_IN power supply is connected to the anodes of a diode DD3 and a diode DD7 after being subjected to capacitance filtering of a CD42, is connected to the cathodes of the diode DD3 and the diode DD7 and is output to a SYS_VCC power supply network after being subjected to capacitance filtering of an electrolytic capacitor ED2, a BARREY_OUT power supply is connected to the anodes of a diode DD4 and a diode DD8 after being subjected to capacitance filtering of a capacitor CD76, and the BARREY_OUT power supply is output to the SYS_VCC power supply network after being subjected to capacitance filtering of an electrolytic capacitor ED 2; the SYS_VCC voltage is filtered to the ground after passing through the parallel connection of the capacitor CD4, the capacitor CD8 and the capacitor CD9, and is input to the 4 th, 5 th and 6 th pins of the power management chip UD1, the 1 st pin and the 10 th pin of the power management chip UD1 are grounded, one end of the resistor RD2 is connected with the 4 th, 5 th and 6 th pins of the power management chip UD1 and one end of the resistor RD1, the other end is connected with one end of the resistor RD23, one end of the capacitor CD 25, one end of the capacitor CD30, the first 10 th, 12 th pins of the power management chip UD1, one end of the resistor RD18 and one end of the resistor RD3, the other end of the resistor RD23 is connected to an EN port, the other end of the resistor RD3 is connected with one end of the capacitor CD31 and grounded, the other end of the capacitor CD31 is connected to the first pin 8 th pin of the power management chip UD1 and the other end of the electronic RD18, the other end of the resistor RD1 is connected to the first pin 11 th pin of the power management chip UD1, one end of the other end of the capacitor RD3 is connected to the first pin 7 LD 1, the other end of the capacitor RD6 and the other end of the capacitor RD2 is connected to the first pin of the capacitor UD1, the other end of the capacitor RD6 and the capacitor RD2 is connected to the capacitor 3, the other end of the capacitor 3 is connected to the capacitor 3 and the capacitor 3 is connected to the capacitor 3, the capacitor is connected to the capacitor 3 and the capacitor is connected to the capacitor.
The SYS_VCC power supply network comprises a voltage dividing circuit of a switch control pin of the power management chip UD1, and an electronic R23 and a capacitor CD30 respectively form a current limiting resistor and a filter circuit of the switch control pin of the power management chip UD 1. The resistor RD3, the resistor RD18 and the capacitor CD31 form a power management chip UD1 management accounting and timing circuit, the SYS_VCC voltage is processed by the power management chip UD1 to output a voltage, and the voltage is filtered in parallel by the capacitor CD18, the capacitor CD19, the capacitor CD20 and the electrolytic capacitor ED3 to output a standard 12V voltage.