CN210898966U

CN210898966U - Lithium electricity intelligent charging ACDC power supply circuit

Info

Publication number: CN210898966U
Application number: CN201922327717.8U
Authority: CN
Inventors: 吴伟
Original assignee: Changzhou Dynamic New Energy Technology Co ltd
Current assignee: Changzhou Dynamic New Energy Technology Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-06-30
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses an ACDC power supply circuit for lithium battery intelligent charging, which consists of an input EMC circuit module, a rectifier circuit module, a power conversion circuit module, an output filter circuit module, a feedback control circuit module, a power control circuit module and an auxiliary power supply circuit module; when the power conversion circuit works, 220V alternating current is connected from an input end of an input EMC circuit module, is connected into a rectification circuit module after being protected by the input EMC circuit module, rectifies the 220V alternating current into direct current, the converted direct current is connected into a power conversion circuit module, the direct current output by the power conversion circuit module is output outwards after passing through an output filter circuit module, and the power conversion circuit module is adjusted in real time through a power control circuit module so that the output direct current is at a set value. The problems of large size, low conversion efficiency and poor anti-interference performance of the conventional lithium battery charging circuit are solved.

Description

Lithium electricity intelligent charging ACDC power supply circuit

Technical Field

The utility model relates to a power conversion circuit, concretely relates to lithium electricity intelligence ACDC power supply circuit that charges.

Background

At present, various electric automobile, electric tool begin to popularize and apply, along with market to electric tool's various technical requirement's improvement, the space of reserving for lithium battery charging circuit is littleer and more little, and to the requirement for quality of power higher and more, so, need design a neotype power, have more efficient power conversion efficiency when satisfying the miniaturization, more reliable interference killing feature.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium electricity intelligence ACDC power supply circuit that charges for solve the big, low, the poor problem of interference killing feature of conversion efficiency of current lithium battery charging circuit size.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an ACDC power supply circuit for intelligent charging of a lithium battery is composed of an input EMC circuit module, a rectifier circuit module, a power conversion circuit module, an output filter circuit module, a feedback control circuit module, a power control circuit module and an auxiliary power supply circuit module; when the power supply works, 220V alternating current is connected from the input end of the input EMC circuit module, is connected into the rectifier circuit module after being protected by the input EMC circuit module, rectifies the 220V alternating current into direct current, the converted direct current is connected into the power conversion circuit module, the power conversion circuit module outputs the direct current with set power value to the outside under the control of the power control circuit module, the direct current output by the power conversion circuit module is output to the outside after the quality of the power supply is improved by the output filter circuit module, in the whole circuit operation process, the feedback control circuit module feeds back the power supply condition of the power supply stabilized by the filter circuit module in real time, the power control circuit module adjusts the power conversion circuit module in real time, so that the output direct current is at a set value, and the control chip of the feedback control circuit module is supplied with working voltage by the auxiliary power supply circuit module during working.

Preferably, the input EMC circuit module uses an inductor LCM-T3 as a core, and utilizes the cooperation of a transient suppression diode, the inductor and a peripheral capacitance resistor to suppress sudden large voltage fluctuation.

Preferably, the rectifier circuit module takes the ac-to-dc conversion module BD1 as a core, and the ac-to-dc conversion module BD1 realizes a function of converting ac power into dc power in cooperation with a capacitor and a resistor.

Preferably, the power conversion circuit module takes the transformer T1 as a core, and adopts a FLYBACK topology, and the power is adjusted by adjusting the input end of the transformer T1.

Preferably, the output filter circuit module uses an inductor as a core, the input end and the output end of the output filter circuit module both have capacitors, and the inductor and the capacitors are matched to reduce the output power supply ripple.

Preferably, the feedback control circuit module takes the control chip D305 as a core, and is composed of three resistors R38, R39, and R40, the voltage division of the output voltage is implemented by using a series resistor voltage division principle and fed back to the control chip D305, and the control chip D305 outputs the adjustment control command in real time according to the fed-back voltage information.

Preferably, the power control circuit module takes the transformer T2 as a core, receives a control instruction of the feedback control circuit module, and controls the power conversion circuit module by cooperation of the transformer T2 and a peripheral circuit thereof, wherein the control mode is PWM pulse modulation, and the power control is realized by controlling the on/off of the MOS transistor.

Preferably, the auxiliary power supply circuit module uses a regulated power supply 7805 as a core, and the regulated power supply 7805 outputs 5V dc power to be used by the control chip D305 of the feedback control circuit module.

The utility model has the advantages of as follows:

adopt the technical scheme of the utility model afterwards, improved the power output quality of lithium battery charging AC-DC power, improved the interference killing feature, reduced circuit scale and volume, and simple structure has more excellent practicality and reliability.

Drawings

Fig. 1 is the utility model relates to an input EMC circuit module circuit schematic diagram of lithium electricity intelligent charging ACDC power supply circuit.

Fig. 2 is the utility model relates to a lithium electricity intelligent charging ACDC power supply circuit's rectifier circuit module circuit schematic diagram.

Fig. 3 is the utility model relates to a lithium electricity intelligent charging ACDC power supply circuit's power conversion circuit module circuit schematic diagram.

Fig. 4 is the utility model relates to a lithium electricity intelligent charging ACDC power supply circuit's output filter circuit module circuit schematic diagram.

Fig. 5 is the utility model relates to a lithium electricity intelligent charging ACDC power supply circuit's feedback control circuit module circuit schematic diagram.

Fig. 6 is the utility model relates to a lithium electricity intelligent charging ACDC power supply circuit's power control circuit module circuit schematic diagram.

Fig. 7 is the utility model relates to a lithium electricity intelligent charging ACDC power supply circuit's supplementary power supply circuit module circuit schematic diagram.

Fig. 8 is the utility model relates to a lithium electricity intelligent charging ACDC power supply circuit's whole circuit schematic diagram.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Example 1

Referring to fig. 8, an ACDC power circuit for intelligent charging of lithium batteries is composed of an input EMC circuit module, a rectifier circuit module, a power conversion circuit module, an output filter circuit module, a feedback control circuit module, a power control circuit module, and an auxiliary power supply circuit module; when the power supply works, 220V alternating current is connected from the input end of the input EMC circuit module, is connected into the rectifier circuit module after being protected by the input EMC circuit module, rectifies the 220V alternating current into direct current, the converted direct current is connected into the power conversion circuit module, the power conversion circuit module outputs the direct current with set power value to the outside under the control of the power control circuit module, the direct current output by the power conversion circuit module is output to the outside after the quality of the power supply is improved by the output filter circuit module, in the whole circuit operation process, the feedback control circuit module feeds back the power supply condition of the power supply stabilized by the filter circuit module in real time, the power control circuit module adjusts the power conversion circuit module in real time, so that the output direct current is at a set value, and the control chip of the feedback control circuit module is supplied with working voltage by the auxiliary power supply circuit module during working.

Referring to fig. 1, preferably, the input EMC circuit module takes an inductor LCM-T3 as a core, and utilizes the transient suppression diode in cooperation with the inductor and a peripheral capacitor resistor to suppress sudden large voltage fluctuations.

Referring to fig. 2, preferably, the rectifier circuit module takes an ac-to-dc conversion module BD1 as a core, and the ac-to-dc conversion module BD1 implements a function of converting ac power into dc power by matching with a capacitor and a resistor.

Referring to fig. 3, preferably, the power conversion circuit module takes a transformer T1 as a core, and adopts a FLYBACK topology, and the power is adjusted by adjusting the input terminal of the transformer T1.

Referring to fig. 4, preferably, the output filter circuit module uses an inductor as a core, the input and output ends of the output filter circuit module both have capacitors, and the inductor and the capacitors are matched to reduce the output power supply ripple.

Referring to fig. 5, preferably, the feedback control circuit module takes the control chip D305 as a core, and is composed of three resistors R38, R39, and R40, the output voltage division is fed back to the control chip D305 by using a series resistor division principle, and the control chip D305 outputs the adjustment control command in real time according to the fed-back voltage information.

Referring to fig. 6, preferably, the power control circuit module takes a transformer T2 as a core, receives a control instruction of the feedback control circuit module, and controls the power conversion circuit module by cooperation of a transformer T2 and a peripheral circuit thereof, where the control mode is PWM pulse modulation, and the power control is realized by controlling on/off of an MOS transistor.

Referring to fig. 7, preferably, the auxiliary power supply circuit module takes a voltage regulator 7805 as a core, and the voltage regulator 7805 outputs 5V dc power to be used by the control chip D305 of the feedback control circuit module.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a lithium electricity intelligent charging ACDC power supply circuit which characterized in that: the power supply circuit consists of an input EMC circuit module, a rectifier circuit module, a power conversion circuit module, an output filter circuit module, a feedback control circuit module, a power control circuit module and an auxiliary power supply circuit module; when the power supply works, 220V alternating current is connected from the input end of the input EMC circuit module, is connected into the rectifier circuit module after being protected by the input EMC circuit module, rectifies the 220V alternating current into direct current, the converted direct current is connected into the power conversion circuit module, the power conversion circuit module outputs the direct current with set power value to the outside under the control of the power control circuit module, the direct current output by the power conversion circuit module is output to the outside after the quality of the power supply is improved by the output filter circuit module, in the whole circuit operation process, the feedback control circuit module feeds back the power supply condition of the power supply stabilized by the filter circuit module in real time, the power control circuit module adjusts the power conversion circuit module in real time, so that the output direct current is at a set value, and the control chip of the feedback control circuit module is supplied with working voltage by the auxiliary power supply circuit module during working.

2. The ACDC power supply circuit for intelligent charging of lithium batteries of claim 1, wherein: the input EMC circuit module takes an inductor LCM-T3 as a core, and utilizes the cooperation of a transient suppression diode, the inductor and a peripheral capacitance resistor to realize suppression of sudden voltage fluctuation.

3. The ACDC power supply circuit for intelligent charging of lithium batteries of claim 1, wherein: the rectifier circuit module takes an alternating current-to-direct current conversion module BD1 as a core, and the alternating current-to-direct current conversion module BD1 is matched with a capacitor and a resistor to realize the function of converting alternating current into direct current.

4. The ACDC power supply circuit for intelligent charging of lithium batteries of claim 1, wherein: the power conversion circuit module takes a transformer T1 as a core, adopts a FLYBACK topological structure, and realizes the adjustment of power by adjusting the input end of a transformer T1.

5. The ACDC power supply circuit for intelligent charging of lithium batteries of claim 1, wherein: the output filter circuit module takes an inductor as a core, the input end and the output end of the output filter circuit module are both provided with capacitors, and the function of reducing output power supply ripples is realized by the cooperation of the inductor and the capacitors.

6. The ACDC power supply circuit for intelligent charging of lithium batteries of claim 1, wherein: the feedback control circuit module takes a control chip D305 as a core and consists of three resistors R38, R39 and R40, the voltage division of output voltage is fed back to the control chip D305 by utilizing the voltage division principle of series resistors, and the control chip D305 outputs an adjustment control command in real time according to the fed-back voltage information.

7. The ACDC power supply circuit for intelligent charging of lithium batteries of claim 1, wherein: the power control circuit module takes a transformer T2 as a core, receives a control instruction of the feedback control circuit module, realizes the control of the power conversion circuit module by the cooperation of the transformer T2 and peripheral circuits thereof, adopts PWM (pulse-width modulation) pulse modulation, and realizes the control of power by controlling the on-off of the MOS (metal oxide semiconductor) tube.

8. The ACDC power supply circuit for intelligent charging of lithium batteries of claim 1, wherein: the auxiliary power supply circuit module takes a voltage-stabilized power supply 7805 as a core, and the voltage-stabilized power supply 7805 outputs 5V direct current to be used by a control chip D305 of the feedback control circuit module.