CN216672863U

CN216672863U - Power aggregation device for multiple power supplies

Info

Publication number: CN216672863U
Application number: CN202122754194.2U
Authority: CN
Inventors: 高传来; 宋立杰
Original assignee: Yimewei Technology Co ltd
Current assignee: Yimewei Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-06-03
Anticipated expiration: 2031-11-11

Abstract

The utility model discloses a multi-power supply power aggregation device which comprises a PWM chip, wherein the PWM chip comprises a PWM generating circuit, a PWM control circuit and a PWM distribution circuit, the PWM control circuit comprises a comparator and three triggers, and the PWM distribution circuit comprises a high-frequency transformer and a distribution circuit. The PWM chip and the high-frequency transformer realize the simultaneous operation of multiple inputs through the distribution circuit. Because only one high-frequency transformer is provided, and only one set of all secondary side rectifying circuits is provided, the cost can be reduced. Meanwhile, the PWM chip inputs the energy of each path of input power supply into the transformer in sequence through the distribution circuit. Accepting feedback from a single output loop. When the load changes, only one input power supply is controlled by the PWM chip at the same time. Thus, the whole system can achieve the same power supply quality of single input electricity. The utility model is based on flyback power topology, and adds PWM distribution circuit to realize power superposition.

Description

Power aggregation device for multiple power supplies

Technical Field

The utility model belongs to the technical field of PWM control, and particularly relates to a multi-path power supply power aggregation device.

Background

And multiple paths of low-power supplies are superposed to realize a high-power output power supply system. It is known that most of the existing multi-input power supplies adopt a loop switching mode, and only one power supply works, and the output power cannot be larger than the upper power limit of any one power supply.

At present, on-column switch control used in the distribution network industry adopts capacitance power taking as one energy taking mode. The power-taking mode is characterized in that each phase takes one power supply, but the power is relatively low and is generally only 10W. But the power consumption of the controller and peripheral devices is much greater than 10W. This requires the power of multiple 10W power supplies to be superimposed.

Therefore, a power aggregation device with multiple power sources is needed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a multi-path power supply power aggregation device.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a multi-path power supply power polymerization device which comprises a PWM chip, wherein the PWM chip comprises a PWM generating circuit, a PWM control circuit and a PWM distribution circuit, the output end of the PWM generating circuit is electrically connected with the input end of the PWM control circuit, and the output end of the PWM control circuit is electrically connected with the input end of the PWM distribution circuit.

As a preferable technical solution of the present invention, the PWM generating circuit includes a PWM power chip, the PWM control circuit includes three flip-flops, a COMP pin of the PWM power chip is electrically connected to the optocoupler, an RT/CT pin of the PWM power chip is electrically connected to an anode of the comparator, an output pin of the comparator is electrically connected to CLK pins of input ends of the three flip-flops in sequence, EN1, EN2, and EN3 pins of output ends of the three flip-flops are electrically connected to EN pins of the high frequency transformer, and output ends of the PWM distributing circuit are G1, G2, G3, and G4.

The EMC processing module sends input multi-path signals to the PWM control circuit through the MCU and sends the input multi-path signals to the terminal power supply circuit, the communication power supply circuit, the remote signaling power supply circuit, the action power supply circuit and the energy storage power supply circuit through the PWM distribution circuit.

As a preferred technical solution of the present invention, an output end of the EMC processing module is electrically connected to input ends of the MCU and the PWM generating circuit, an output end of the MCU is electrically connected to input ends of the EMC processing module, the PWM control circuit, the PWM distribution circuit, the terminal power circuit, the communication power circuit, the remote signaling power circuit, the action power circuit, and the energy storage power circuit, an output end of the PWM control circuit is electrically connected to an input end of the PWM distribution circuit, and an output end of the PWM distribution circuit is electrically connected to input ends of the terminal power circuit, the communication power circuit, the remote signaling power circuit, the action power circuit, and the energy storage power circuit.

As a preferred technical scheme of the present invention, the sawtooth wave on the RT/CT pin of the PWM power chip is converted into a square wave by a comparator, and the waveform received on the CLK pin of the flip-flop forms 3 EN signals that are sequentially high through the flip-flop, so as to obtain a corresponding PWM waveform. At high level, all cycles are output through G4, otherwise G1, G2 and G3 are output in sequence.

As a preferred technical solution of the present invention, the PWM distribution circuit includes a plurality of distribution units, each of the distribution units includes a capacitor, a resistor, a diode, and a transistor, the capacitor and the resistor are electrically connected to a negative electrode of the diode after being connected in parallel, and an anode of the diode is electrically connected to an emitter of the transistor.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model only needs one PWM chip and one high-frequency transformer, and realizes the simultaneous work of multiple inputs through the distribution circuit. Because only one high-frequency transformer is provided, and only one set of all secondary side rectifying circuits is provided, the cost can be reduced. Meanwhile, the PWM chip inputs the energy of each path of input power supply into the transformer in sequence through the distribution circuit. Accepting feedback from a single output loop. When the load changes, only one input power supply is controlled by the PWM chip at the same time. Thus, the whole system can achieve the same power supply quality of single input electricity. The utility model is based on flyback power topology, and adds PWM distribution circuit to realize power superposition.

Drawings

Fig. 1 is a schematic block diagram of the overall structure of a multi-power-supply power aggregation device according to the present invention.

Fig. 2 is an overall circuit structure diagram of a multi-power-supply power aggregation device according to the present invention.

Fig. 3 is a schematic circuit diagram of a PWM generating circuit and a PWM controlling circuit in a multi-power-supply power combining apparatus according to the present invention.

Fig. 4 is a schematic circuit diagram of a PWM distribution circuit in a multi-power-supply power combining apparatus according to the present invention.

Fig. 5 is a schematic circuit diagram of a first splitter unit of the splitter circuit in the multi-power combiner of the present invention.

Fig. 6 is a schematic circuit diagram of a second splitter unit of the splitter circuit in the multi-power combiner of the present invention.

Fig. 7 is a schematic circuit diagram of a third splitter unit of the splitter circuit in the multi-power combiner of the present invention.

Fig. 8 is a schematic circuit diagram of a fourth distributor unit of the distributor circuit in the multi-power-supply power combiner of the utility model.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example 1

In order to achieve the objectives of the present invention, as shown in fig. 3 to 4, in one embodiment of the present invention, a multi-channel power aggregation apparatus is provided, which includes a PWM chip, where the PWM chip includes a PWM generating circuit, a PWM control circuit, and a PWM distributing circuit, an output terminal of the PWM generating circuit is electrically connected to an input terminal of the PWM control circuit, and an output terminal of the PWM control circuit is electrically connected to an input terminal of the PWM distributing circuit.

The PWM generating circuit comprises a PWM power supply chip, the PWM control circuit comprises three triggers, a COMP pin of the PWM power supply chip is electrically connected with an optical coupler, an RT/CT pin of the PWM power supply chip is electrically connected with a positive electrode of a comparator, an output pin of the comparator is electrically connected with an input end CLK pin of the three triggers in sequence, EN1, EN2 and EN3 pins of output ends of the three triggers are electrically connected with an EN pin of a high-frequency transformer, and the output end of the PWM distribution circuit is G1, G2, G3 and G4.

Specifically, in this embodiment, the PWM power supply chip is TL2843, the flip-flop is SN74HC74, the transformer is SY841ABC, the regulator is HT7550-2, the driver is MC33151DG, and the isolation chip is NSI 8100. Sawtooth waves on the RT/CT pin of the PWM power supply chip are converted into square waves through the comparator, and the waveforms received on the CLK pin of the trigger form 3 EN signals which are sequentially high through the trigger, so that corresponding PWM waveforms are obtained. At high level, all cycles are output through G4, otherwise G1, G2 and G3 are output in sequence. The working principle is as follows: the PWM chip inputs the energy of each input power supply into the transformer in sequence through the distribution circuit and receives the feedback of the single output loop. When the load changes, only one input power supply is controlled by the PWM chip at the same time.

As shown in fig. 1 to 2, the multi-channel power supply power aggregation device further includes an EMC processing module, an MCU, a terminal power supply circuit, a communication power supply circuit, a remote signaling power supply circuit, an action power supply circuit, and an energy storage power supply circuit, wherein the EMC processing module sends the input multi-channel signal to the PWM control circuit through the MCU, and the input multi-channel signal is sent to the terminal power supply circuit, the communication power supply circuit, the remote signaling power supply circuit, the action power supply circuit, and the energy storage power supply circuit through the PWM distribution circuit.

Specifically, the output end of the EMC processing module is electrically connected with the MCU and the input end of the PWM generating circuit, the output end of the MCU is electrically connected with the EMC processing module, the PWM control circuit, the PWM distribution circuit, the terminal power circuit, the communication power circuit, the remote signaling power circuit, the action power circuit and the input end of the energy storage power circuit, the output end of the PWM control circuit is electrically connected with the input end of the PWM distribution circuit, and the output end of the PWM distribution circuit is electrically connected with the terminal power circuit, the communication power circuit, the remote signaling power circuit, the action power circuit and the input end of the energy storage power circuit.

The PWM distribution circuit comprises a plurality of distribution units, wherein one distribution unit comprises a capacitor, a resistor, a diode and a triode, the capacitor and the resistor are electrically connected with the cathode of the diode after being connected in parallel, and the anode of the diode is electrically connected with the emitter of the triode.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a multichannel power polymerization device which characterized in that, includes the PWM chip, the PWM chip includes PWM generating circuit, PWM control circuit and PWM distribution circuit, the output of PWM generating circuit and PWM control circuit's input electric connection, the output of PWM control circuit and the input electric connection of PWM distribution circuit.

2. The multi-power-supply power polymerization device according to claim 1, wherein the PWM generation circuit comprises a PWM power supply chip, the PWM control circuit comprises three flip-flops, a COMP pin of the PWM power supply chip is electrically connected to the optical coupler, an RT/CT pin of the PWM power supply chip is electrically connected to an anode of a comparator, an output pin of the comparator is electrically connected to CLK pins of input terminals of the three flip-flops in sequence, EN1, EN2, and EN3 pins of output terminals of the three flip-flops are electrically connected to EN pins of the high-frequency transformer, and output terminals of the PWM distribution circuit are G1, G2, G3, and G4.

3. The multi-power supply power aggregation device according to claim 1, further comprising an EMC processing module, an MCU, a terminal power supply circuit, a communication power supply circuit, a remote signaling power supply circuit, an operation power supply circuit, and an energy storage power supply circuit, wherein the EMC processing module sends the input multi-power signals to the PWM control circuit through the MCU, and the signals are sent to the terminal power supply circuit, the communication power supply circuit, the remote signaling power supply circuit, the operation power supply circuit, and the energy storage power supply circuit through the PWM distribution circuit.

4. The multi-power-supply power aggregation device according to claim 3, wherein the output end of the EMC processing module is electrically connected to the input ends of the MCU and the PWM generating circuit, the output end of the MCU is electrically connected to the input ends of the EMC processing module, the PWM control circuit, the PWM distribution circuit, the terminal power supply circuit, the communication power supply circuit, the telecommand power supply circuit, the action power supply circuit and the energy storage power supply circuit, and the output end of the PWM distribution circuit is electrically connected to the input ends of the terminal power supply circuit, the communication power supply circuit, the telecommand power supply circuit, the action power supply circuit and the energy storage power supply circuit.

5. The multi-power-supply power aggregation device according to claim 2, wherein a sawtooth wave on the RT/CT pin of the PWM power supply chip is converted into a square wave through a comparator, and a waveform received on the CLK pin of the trigger forms 3 EN signals which are sequentially high through the trigger, so that a corresponding PWM waveform is obtained; at high level, all cycles are output through G4, otherwise G1, G2 and G3 are output in sequence.

6. The multi-power-supply power aggregation device according to claim 4, wherein the PWM distribution circuit comprises a plurality of distribution units, each distribution unit comprises a capacitor, a resistor, a diode and a triode, the capacitor and the resistor are connected in parallel and then electrically connected with the cathode of the diode, and the anode of the diode is electrically connected with the emitter of the triode.