CN-224233533-U - Mobile power supply charging management system

CN224233533UCN 224233533 UCN224233533 UCN 224233533UCN-224233533-U

Abstract

The utility model provides a mobile power supply charging management system which comprises a power supply input rectifying circuit, a switching power supply conversion circuit electrically connected with the power supply input rectifying circuit, a Pulse Width Modulation (PWM) control circuit electrically connected with the switching power supply conversion circuit, and a power driving circuit electrically connected with the switching power supply conversion circuit and the PWM control circuit, wherein the input of the power supply input rectifying circuit is external alternating current and the output of the power supply input rectifying circuit is stable direct current voltage, the switching power supply conversion circuit inputs the stable direct current voltage and outputs the stable direct current voltage and a multi-level direct current power supply, the input of the PWM control circuit is the stable direct current voltage, and PWM signals are output to the power driving circuit, so that the power driving circuit controls the stable direct current voltage to carry out voltage conversion according to the received PWM signals to output a stable mobile power supply load. The utility model can reduce energy loss and improve power conversion efficiency, thereby prolonging the endurance time of the mobile power supply.

Inventors

YU WEIJIN
ZHENG XIAOJUN
YU WEIXIONG

Assignees

广东众能光伏设备有限公司

Dates

Publication Date: 20260512
Application Date: 20250328

Claims (10)

1. A mobile power supply charging management system, comprising: a power supply is input into the rectifying circuit; the switching power supply conversion circuit is electrically connected with the power supply input rectification circuit; A Pulse Width Modulation (PWM) control circuit electrically connected with the switching power supply conversion circuit; A power driving circuit electrically connected with the switching power supply conversion circuit and the PWM control circuit; the power supply input rectifying circuit is used for inputting external alternating current and outputting stable direct current voltage; The switching power supply conversion circuit inputs stable direct current voltage and outputs stable direct current voltage and a multi-level direct current power supply; The input of the PWM control circuit is stable direct-current voltage, and PWM signals are output to the power driving circuit, so that the power driving circuit controls the stable direct-current voltage to perform voltage conversion according to the received PWM signals, and a stable mobile power supply load is output.
2. The mobile power supply charging management system according to claim 1, wherein the power supply input rectifying circuit comprises: An input interface electrically connected to the alternating current; a rectifier bridge electrically connected to the input interface; a first filter circuit electrically connected to the rectifier bridge; The input interface is connected with alternating current, surge current is restrained and filtered on the alternating current, the rectifier bridge converts the alternating current into direct current, and the first filter circuit filters the direct current into stable direct current voltage.
3. The mobile power supply charging management system according to claim 1, wherein the switching power supply conversion circuit comprises: a stable direct current voltage interface electrically connected with the power input rectifying circuit; A switching transformer electrically connected to the stabilized dc voltage interface; A secondary rectifying and filtering circuit electrically connected with the switching transformer; The control chip is electrically connected with the stable direct-current voltage interface and the switching transformer; the feedback regulating circuit is electrically connected with the control chip and the secondary rectifying and filtering circuit; The control chip controls the internal integrated switching tube to be switched on or off, when the switching tube is switched on, the stable direct voltage charges and stores energy on a primary winding of the switching transformer, when the switching tube is switched off, the primary winding of the switching transformer is coupled to a secondary winding through electromagnetic induction, the secondary rectifying and filtering circuit rectifies and filters high-frequency alternating current output by the secondary winding to output a multi-grade direct current power supply, and the feedback regulating circuit feeds back the multi-grade direct current power supply to the control chip to regulate the working state of the switching tube.
4. The mobile power supply charging management system according to claim 3, wherein the secondary rectifying and filtering circuit comprises: a rectifier diode electrically connected to the switching transformer; a first filter capacitor electrically connected to the rectifier diode; The three-terminal voltage stabilizer is electrically connected with the filter capacitor; The second filter capacitor is electrically connected with the three-terminal voltage stabilizer; The rectifier diode rectifies the high-frequency alternating current output by the secondary winding into pulse direct current; the first filter capacitor filters the pulse direct current to output a primary direct current power supply, the three-terminal voltage stabilizer converts the primary direct current power supply into a secondary direct current power supply, and the second filter capacitor filters the secondary direct current power supply to output.
5. The mobile power supply charge management system of claim 4, wherein said feedback adjustment circuit comprises: the optocoupler is electrically connected with the primary direct current power supply and the control chip; the voltage stabilizing tube is electrically connected with the optocoupler; the voltage stabilizing tube provides reference voltage, the primary direct current power supply is compared with the reference voltage, and the control chip is controlled according to the comparison result to adjust the working state of the switching tube, so that the output voltage of the primary direct current power supply and the output voltage of the secondary direct current power supply are kept stable.
6. The mobile power supply charging management system according to claim 4, wherein the PWM control circuit comprises: an operational amplifier auxiliary circuit electrically connected with the primary direct current power supply, A PWM controller electrically connected with the operational amplifier auxiliary circuit, The operational amplifier auxiliary circuit processes the primary direct current power supply into a feedback signal suitable for being identified by a PWM controller, wherein the PWM controller configures oscillation frequency, outputs PWM signals, drives the power driving circuit to be turned on and off, and adjusts the duty ratio of the PWM signals according to the feedback signal.
7. The mobile power supply charging management system according to claim 6, wherein the power driving circuit comprises: a PWM signal driving circuit electrically connected with the PWM controller, A power switch conversion circuit electrically connected with the stabilized DC voltage and PWM signal driving circuit; A rectifying and filtering circuit electrically connected with the power switch conversion circuit; The power switch conversion circuit converts the stable direct current voltage into high-frequency alternating current under the drive of the PWM signal and reduces the voltage, and the rectification filter circuit rectifies and filters the reduced high-frequency alternating current to output a stable mobile power supply load.
8. The mobile power supply charging management system according to claim 7, wherein the PWM signal driving circuit comprises a first triode Q8, a second triode Q9, a third triode Q10 and a fourth triode Q11, wherein the first triode Q8, the second triode Q9, the third triode Q10 and the fourth triode Q11 form a push-pull structure, amplify an input PWM signal and drive the power switch conversion circuit.
9. The mobile power supply charging management system of claim 7, wherein the power switch conversion circuit comprises: A first transformer electrically connected to the PWM signal driving circuit; the metal-oxide-semiconductor MOS tube power switch circuit is in piezoelectric connection with the first transformer and the stable direct current; the second transformer is electrically connected with the MOS tube power switch circuit; The MOS tube power switch circuit converts the stable direct current voltage into high-frequency alternating current under the drive of the PWM signal, and the second transformer reduces the high-frequency alternating current.
10. The mobile power supply charging management system according to claim 7, wherein the rectifying and filtering circuit comprises: a rectifying circuit electrically connected to the power switch conversion circuit; A second filter circuit electrically connected to the rectifier circuit; A protection circuit electrically connected to the second filter circuit; The rectification circuit converts alternating current into direct current, the second filtering circuit filters the direct current into a stable mobile power supply load, and the protection circuit performs overcurrent protection on the stable mobile power supply load and outputs the stable mobile power supply load.

Description

Mobile power supply charging management system Technical Field The utility model relates to the technical field of charging, in particular to a mobile power supply charging management system. Background With the rapid development of electronic information technology, a mobile power supply has become an essential electronic device in daily life. The mobile power supply charging management system is responsible for controlling the charging and discharging processes of the mobile power supply, guaranteeing the safety of the mobile power supply and realizing high-efficiency energy management. The charging stability and the energy utilization efficiency of the conventional mobile power supply charging management system still need to be improved. Disclosure of utility model The utility model aims to provide a mobile power supply charging management system which can reduce energy loss and improve power conversion efficiency so as to prolong the endurance time of a mobile power supply. In order to solve the technical problems, the technical scheme of the utility model is as follows: a mobile power supply charge management system, comprising: a power supply is input into the rectifying circuit; the switching power supply conversion circuit is electrically connected with the power supply input rectification circuit; A Pulse Width Modulation (PWM) control circuit electrically connected with the switching power supply conversion circuit; A power driving circuit electrically connected with the switching power supply conversion circuit and the PWM control circuit; the power supply input rectifying circuit is used for inputting external alternating current and outputting stable direct current voltage; The switching power supply conversion circuit inputs stable direct current voltage and outputs stable direct current voltage and a multi-level direct current power supply; The input of the PWM control circuit is stable direct-current voltage, and PWM signals are output to the power driving circuit, so that the power driving circuit controls the stable direct-current voltage to perform voltage conversion according to the received PWM signals, and a stable mobile power supply load is output. Optionally, the power input rectifying circuit includes: An input interface electrically connected to the alternating current; a rectifier bridge electrically connected to the input interface; a first filter circuit electrically connected to the rectifier bridge; The input interface is connected with alternating current, surge current is restrained and filtered on the alternating current, the rectifier bridge converts the alternating current into direct current, and the first filter circuit filters the direct current into stable direct current voltage. Optionally, the switching power supply conversion circuit includes: a stable direct current voltage interface electrically connected with the power input rectifying circuit; A switching transformer electrically connected to the stabilized dc voltage interface; A secondary rectifying and filtering circuit electrically connected with the switching transformer; The control chip is electrically connected with the stable direct-current voltage interface and the switching transformer; the feedback regulating circuit is electrically connected with the control chip and the secondary rectifying and filtering circuit; The control chip controls the internal integrated switching tube to be switched on or off, when the switching tube is switched on, the stable direct voltage charges and stores energy on a primary winding of the switching transformer, when the switching tube is switched off, the primary winding of the switching transformer is coupled to a secondary winding through electromagnetic induction, the secondary rectifying and filtering circuit rectifies and filters high-frequency alternating current output by the secondary winding to output a multi-grade direct current power supply, and the feedback regulating circuit feeds back the multi-grade direct current power supply to the control chip to regulate the working state of the switching tube. Optionally, the secondary rectifying and filtering circuit includes: a rectifier diode electrically connected to the switching transformer; a first filter capacitor electrically connected to the rectifier diode; The three-terminal voltage stabilizer is electrically connected with the filter capacitor; The second filter capacitor is electrically connected with the three-terminal voltage stabilizer; The rectifier diode rectifies the high-frequency alternating current output by the secondary winding into pulse direct current; the first filter capacitor filters the pulse direct current to output a primary direct current power supply, the three-terminal voltage stabilizer converts the primary direct current power supply into a secondary direct current power supply, and the second filter capacitor filters the secondary direct current power supply to output. Opti