CN211321232U

CN211321232U - Three-in-one power supply

Info

Publication number: CN211321232U
Application number: CN202020456366.0U
Authority: CN
Inventors: 贺新强; 柏竹辉
Original assignee: Wuxi Juneng New Energy Technology Co ltd
Current assignee: Wuxi Juneng New Energy Technology Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-08-21
Anticipated expiration: 2030-04-01

Abstract

The utility model relates to a trinity power, a serial communication port, include: the power input sequentially passes through the EMI filter circuit, the first rectifying filter circuit, the first direct current circuit and the second rectifying filter circuit to form a first output, and the first output, the first power isolation feedback circuit, the first PWM modulation circuit and the first direct current circuit form a feedback circuit; the power input sequentially passes through the EMI filter circuit, the first rectifying filter circuit, the second direct current circuit and the third rectifying filter circuit to form a second output, and the second output, the second power isolation feedback circuit, the second PWM modulation circuit and the second direct current circuit form a feedback circuit; the second output sequentially passes through the buck conversion circuit and the fourth rectification filter circuit to form a third output. The power output three routes can control the direct current effectively and fill electric pile electric cost for direct current fills electric pile global wiring neatly more, and has avoided direct current to fill electric pile's solid barrier effectively. The power supply has the advantages of ingenious design and universal structure, and can be generally applied to the field of electronics.

Description

Three-in-one power supply

Technical Field

The utility model relates to a power technical field, more specifically say, relate to a trinity power.

Background

In the electric automobile charging pile industry, 3 independent power supplies with different sizes are needed for each main control panel, a car BMS power supply (12V) and a bus passenger car BMS power supply (24V). From this point of view, the electric part of filling electric pile is more loaded down with trivial details and complicated. Fill the increase of electric pile volume, increased artifical installation cost again.

Thus, significant advances in the art are needed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the foretell defect of prior art, provide a trinity power, include: the power input sequentially passes through the EMI filter circuit, the first rectifying filter circuit, the first direct current circuit and the second rectifying filter circuit to form a first output, and the first output, the first power isolation feedback circuit, the first PWM modulation circuit and the first direct current circuit form a feedback circuit; the power input sequentially passes through the EMI filter circuit, the first rectifying filter circuit, the second direct current circuit and the third rectifying filter circuit to form a second output, and the second output, the second power isolation feedback circuit, the second PWM modulation circuit and the second direct current circuit form a feedback circuit; the second output sequentially passes through the buck conversion circuit and the fourth rectification filter circuit to form a third output, and the third output, the third power supply feedback circuit, the third PWM modulation circuit and the buck conversion circuit form a feedback circuit.

In the three-in-one power supply of the present invention, the EMI filter circuit includes: through the inductance and capacitance of the electrical connection.

In the three-in-one power supply of the present invention, the first rectifying and filtering circuit comprises: the rectifier bridge rectifies commercial power 50HZ into 100HZ, and generates unstable direct current voltage through capacitive filtering.

In the three-in-one power supply of the present invention, the first dc circuit includes: a first LC element.

In the three-in-one power supply of the present invention, the second rectifying and filtering circuit comprises: through a rectifying diode and a capacitor electrically connected.

In the three-in-one power supply of the present invention, the second dc circuit includes: a second LC element.

In the three-in-one power supply of the present invention, the third rectifying and filtering circuit comprises: through a rectifying diode and a capacitor electrically connected.

In the three-in-one power supply of the present invention, the step-down conversion circuit includes: direct current _ direct current Buck type voltage reduction switching power supply circuit.

In the three-in-one power supply of the present invention, the fourth rectifying and filtering circuit comprises: through a rectifying diode and a capacitor electrically connected.

In the three-in-one power supply of the present invention, the first output is 12V5A, the second output is 24V10A, and the third output is 12V 10A.

Implement the utility model discloses a trinity power has following beneficial effect: the utility model discloses trinity power supply output three routes, 12V5A, 12V10A, 24V10A, wherein 12V5A provides the power to the direct current fills electric pile main control board, 12V10A and 24V10A alternative BMS to different motorcycle types provide the power, can control the direct current effectively and fill electric pile electric cost, make the direct current fill electric pile global wiring cleaner and tidier, and avoided the solid obstacle of direct current fill electric pile effectively. The power supply has the advantages of ingenious design and universal structure, and can be generally applied to the field of electronics.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic diagram of a three-in-one power circuit of the present invention.

Detailed Description

Please refer to fig. 1, which is a schematic diagram of a three-in-one power circuit of the present invention. As shown in fig. 1, the three-in-one power supply provided by the first embodiment of the present invention at least includes that the power input sequentially passes through the EMI filter circuit, the first rectification filter circuit, the first dc circuit, and the second rectification filter circuit to form the first output, and the first output and the first power isolation feedback circuit, the first PWM modulation circuit, and the first dc circuit form the feedback circuit; the power input sequentially passes through the EMI filter circuit, the first rectifying filter circuit, the second direct current circuit and the third rectifying filter circuit to form a second output, and the second output, the second power isolation feedback circuit, the second PWM modulation circuit and the second direct current circuit form a feedback circuit; the second output sequentially passes through the buck conversion circuit and the fourth rectification filter circuit to form a third output, and the third output, the third power supply feedback circuit, the third PWM modulation circuit and the buck conversion circuit form a feedback circuit. The EMI filter circuit includes: through the inductance and capacitance of the electrical connection. The method mainly utilizes inductive elements, capacitive elements and characteristics to eliminate the interference of a mains supply power grid to a power supply and the interference of the power supply to the mains supply. The first power isolation feedback circuit means that the output power 12V of the first direct current circuit is subjected to resistance voltage division and then is electrically isolated for the optocoupler PC817, so that the output voltage is stabilized within a 12V range.

In specific implementation, the first PWM modulation circuit includes: the output of the isolating optocoupler PC817 forms a voltage on a filter capacitor to a specified chip such as TL2845, and the voltage is compared with a triangular wave generated in the chip TL2845 to generate a square wave. The first direct current circuit comprises a second filter circuit, a first power isolation feedback circuit and a first PWM modulation circuit which are electrically connected. The second direct current circuit includes: the feedback circuit and the second PWM modulation circuit are isolated by the second power supply through a third filter circuit and a second power supply which are electrically connected. The third direct current circuit comprises a fourth filter circuit, a third power supply feedback circuit and a third PWM modulation circuit which are electrically connected. The second power isolation feedback circuit means that the second output power 24V is subjected to resistance voltage division and then is electrically isolated for the optocoupler PC817, so that the output voltage is stabilized within a 24V range. The second PWM modulation circuit means that an isolation optocoupler PC817 outputs a voltage formed on a filter capacitor to a specified chip such as TL2845, and the voltage is compared with a triangular wave in the chip to generate a square wave. The third power supply feedback circuit means that the third output power supply 12V is divided by a resistor and then is sent to a specified chip such as TL 2845. The third PWM modulation circuit means that the third output power 12V is divided by a resistor and then sent to a chip such as TL2845 to be compared with a triangular wave to generate a square wave.

The first rectifying and filtering circuit comprises: the rectifier bridge rectifies commercial power 50HZ into 100HZ, and generates unstable direct current voltage through capacitive filtering. The first direct current circuit includes: a first LC element. Unstable direct current voltage is subjected to secondary filtering through the first LC element, and then the unstable direct current voltage is divided into a first path of direct current voltage. The first LC element mainly comprises an inductor L and a capacitor C. The first LC element forms an oscillating circuit of a frequency-selecting network consisting of an inductor L and a capacitor C and is used for generating high-frequency sine wave signals. The radiation power of the LC oscillation circuit is proportional to the fourth power of the oscillation frequency, and in order to radiate electromagnetic waves of sufficient intensity to the outside of the LC oscillation circuit, it is necessary to increase the oscillation frequency and make the circuit have an open form.

The second rectifying and filtering circuit includes: through a rectifying diode and a capacitor electrically connected. The second direct current circuit includes: a second LC element. The unstable direct current voltage is secondarily filtered by the second LC element to be shunted out of the second path of direct current voltage. And the second LC element mainly comprises an inductor L and a capacitor C. The second LC element forms an oscillating circuit of a frequency-selecting network consisting of an inductor L and a capacitor C and is used for generating high-frequency sine wave signals, and the common LC sine wave oscillating circuit comprises a transformer feedback type LC oscillating circuit, an inductor three-point type LC oscillating circuit and a capacitor three-point type LC oscillating circuit. The radiation power of the LC oscillation circuit is proportional to the fourth power of the oscillation frequency, and in order to radiate electromagnetic waves of sufficient intensity to the outside of the LC oscillation circuit, it is necessary to increase the oscillation frequency and make the circuit have an open form. The third rectifying and filtering circuit includes: through a rectifying diode and a capacitor electrically connected. The step-down converter circuit includes: direct current _ direct current Buck type voltage reduction switching power supply circuit. The fourth rectifying and filtering circuit includes: through a rectifying diode and a capacitor electrically connected. The first output was 12V5A, the second output was 24V10A, and the third output was 12V 10A. The workpiece principle is as follows: the single-phase 220VAC input is subjected to secondary EMI filtering and rectification, then unstable voltage power supplies are respectively provided for 12V5A and 24V10A transformers, and PWM waveforms generated by a modulation chip generate isolation pulse width on the transformers through MOS tubes. After rectification and filtering, stable direct current voltage and current of 12V5A and 24V10A are obtained. 12V10A obtains stable direct current voltage current after passing through high frequency chopping rectification filtering on 24V10A, is supplied by second output voltage 24V direct current, produces adjustable pulse width through controllable power element MOS pipe and supplies power for inductance charging and load, when controllable power MOS pipe is cut off, output current is provided by inductance through rectifier diode and filter capacitor, output voltage and current regulation are to produce pulse width to control controllable power MOS pipe on and off by output feedback circuit for PWM modulation chip.

The utility model discloses a design of above embodiment, its beneficial effect is: the utility model discloses trinity power supply output three routes, 12V5A, 12V10A, 24V10A, wherein 12V5A provides the power to the direct current fills electric pile main control board, 12V10A and 24V10A alternative BMS to different motorcycle types provide the power, can control the direct current effectively and fill electric pile electric cost, make the direct current fill electric pile global wiring cleaner and tidier, and avoided the solid obstacle of direct current fill electric pile effectively. The power supply has the advantages of ingenious design and universal structure, and can be generally applied to the field of electronics.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. Furthermore, to adapt to the particular situation of the technology of the present invention, it is possible to make numerous modifications to the present invention without departing from its scope of protection. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A three-in-one power supply, comprising: the power input sequentially passes through the EMI filter circuit, the first rectifying filter circuit, the first direct current circuit and the second rectifying filter circuit to form a first output, and the first output, the first power isolation feedback circuit, the first PWM modulation circuit and the first direct current circuit form a feedback circuit; the power input sequentially passes through the EMI filter circuit, the first rectifying filter circuit, the second direct current circuit and the third rectifying filter circuit to form a second output, and the second output, the second power isolation feedback circuit, the second PWM modulation circuit and the second direct current circuit form a feedback circuit; the second output sequentially passes through the buck conversion circuit and the fourth rectification filter circuit to form a third output, and the third output, the third power supply feedback circuit, the third PWM modulation circuit and the buck conversion circuit form a feedback circuit.

2. The three-in-one power supply of claim 1, wherein the EMI filter circuit comprises: through the inductance and capacitance of the electrical connection.

3. The three-in-one power supply of claim 1, wherein the first rectifying and filtering circuit comprises: the rectifier bridge rectifies commercial power 50HZ into 100HZ, and generates unstable direct current voltage through capacitive filtering.

4. The tri-in-one power supply of claim 3, wherein the first direct current circuit comprises: a first LC element.

5. The three-in-one power supply of claim 1, wherein the second rectifying and filtering circuit comprises: through a rectifying diode and a capacitor electrically connected.

6. The tri-in-one power supply of claim 1, wherein the second dc circuit comprises: a second LC element.

7. The three-in-one power supply of claim 1, wherein the third rectifying and filtering circuit comprises: through a rectifying diode and a capacitor electrically connected.

8. The three-in-one power supply of claim 1, wherein the buck converter circuit comprises: direct current _ direct current Buck type voltage reduction switching power supply circuit.

9. The three-in-one power supply of claim 1, wherein the fourth rectifying and filtering circuit comprises: through a rectifying diode and a capacitor electrically connected.

10. The three-in-one power supply of claim 1 wherein the first output is 12V5A, the second output is 24V10A, and the third output is 12V 10A.