WO2020224178A1

WO2020224178A1 - Multi-path direct current output device

Info

Publication number: WO2020224178A1
Application number: PCT/CN2019/109306
Authority: WO
Inventors: 张少林; 丘春辉; 梁勤飞
Original assignee: 深圳威富智慧家居科技有限公司
Priority date: 2019-05-07
Filing date: 2019-09-30
Publication date: 2020-11-12
Also published as: CN209748426U

Abstract

A multi-path direct current output device (10), comprising an alternating current to direct current conversion circuit (100), a voltage control circuit (200), and an interface panel (300). The alternating current to direct current conversion circuit (100) is configured to convert an alternating current into a multi-path direct current having a preset voltage value and to output same. The voltage control circuit (200) is electrically connected to the alternating current to direct current conversion circuit (100) to control the alternating current to direct current conversion circuit (100) to output the voltage of the direct current. The interface panel (300) comprises a panel body (301), direct current output interfaces (310), and a voltage input component (320). The direct current output interfaces (310) and the voltage input component (320) are all provided on the panel body (301). The direct current output interfaces (310) are all electrically connected to a multi-path output end of the alternating current to direct current conversion circuit (100). The voltage input component (320) is electrically connected to the voltage control circuit (200). The voltage input component (320) is configured to input a target direct current voltage to the voltage control circuit (200). The multi-path direct current output device (10) is easy to use and saves a space.

Description

Multi-channel DC output device

Related application

This application claims the priority of the Chinese patent application filed on May 07, 2019 with the application number 201920643801.8 and the title "Multi-channel DC output device", the full text of which is hereby incorporated by reference.

Technical field

This application relates to the field of circuit design, and more specifically, to a multi-channel DC output device.

Background technique

With the development of technology, there are more and more types of electrical appliances. Generally electrical appliances need DC power supply. However, at present, the power supply of the electric place is to output the AC power through the standard panel, and the power adapter is required when the electrical appliance is connected to the power source. Therefore, electrical appliances with different voltage requirements need to be equipped with different types of power adapters, which is inconvenient to use and brings a lot of trouble to users.

Summary of the invention

In view of this, this application discloses a multi-channel DC output device.

A multi-channel DC output device, including:

AC-DC conversion circuit for converting AC power into multiple DC power outputs with preset voltage values;

A voltage control circuit, electrically connected to the AC-DC conversion circuit, and used for controlling the voltage of the DC power output by the AC-DC conversion circuit;

The interface panel includes a panel body, a DC output interface, and a voltage input assembly. The DC output interface and the voltage input assembly are both arranged on the panel body. The AC and DC output interface and the DC conversion circuit have multiple outputs The terminals are electrically connected, the voltage input component is electrically connected to the voltage control circuit, and the voltage input component is used to input a target DC voltage to the voltage control circuit.

The multi-channel DC output device provided by the embodiment of the present application includes the AC-DC conversion circuit, the voltage control circuit, and the interface panel. The interface panel includes the panel body and the DC output interface and voltage input component arranged on the panel body. The voltage input component is electrically connected with the voltage control circuit. The voltage control circuit is electrically connected to the AC-DC conversion circuit. The AC-DC conversion circuit is electrically connected with the DC output interface. The multi-channel DC output device provided by the embodiment of the present application outputs DC power to the panel body through the AC-DC conversion circuit and the DC output interface, and can supply power to electrical equipment without connecting an adapter, which is convenient and quick to use . In addition, the multi-channel DC output device can be directly installed on a wall in the use environment through the interface panel, which saves installation space and is convenient to use. At the same time, through the voltage input component and the voltage control circuit, a variety of direct currents can be freely selected to adapt to different electrical equipment and improve the versatility and practicability of the multi-channel direct current output device.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a multi-channel DC output device provided by an embodiment of the application;

FIG. 2 is a schematic structural diagram of a multi-channel DC output device provided by an embodiment of the application;

3 is a schematic structural diagram of a multi-channel DC output device provided by an embodiment of the application;

FIG. 4 is a circuit diagram of a multi-channel DC output device provided by an embodiment of the application;

FIG. 5 is a schematic structural diagram of a multi-channel DC output device provided by an embodiment of the application;

6 is a schematic diagram of the structure and connection relationship of a DC-DC conversion circuit provided by an embodiment of the application;

FIG. 7 is a schematic diagram of the structure of a power connection line provided by an embodiment of the application.

Description of reference signs

Multi-channel DC output device 10

AC-DC conversion circuit 100

220V AC to 5V DC conversion circuit 110

220V AC to 12V DC conversion circuit 120

220V AC to 20V DC conversion circuit 130

220V AC to 24V DC conversion circuit 140

220V AC to 36V DC conversion circuit 150

220V AC to 48V DC conversion circuit 160

AC-DC sub-circuit 170

Step-down circuit 180

Bridge drive circuit 190

Voltage control circuit 200

Select switch 210

Microprocessor 220

Interface panel 300

Panel body 301

DC output interface 310

Voltage input components 320

DC-DC conversion circuit 400

5V DC conversion circuit 410

12V DC conversion circuit 420

20V DC conversion circuit 430

24V DC conversion circuit 440

36V DC conversion circuit 450

48V DC conversion circuit 460

Power connection line 500

Input interface 510

Output interface 520

Connecting line 530

AC power supply 20

DC power supply 30

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present application clearer, the following uses embodiments and accompanying drawings to further describe the present application in detail. It should be understood that the specific embodiments described herein are only used to explain the application, and not used to limit the application.

The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application include direct and indirect connection (connection) unless otherwise specified. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description , Rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.

In this application, unless expressly stipulated and defined otherwise, the “on” or “under” of the first feature on the second feature may be in direct contact with the first and second features, or indirectly through an intermediary. contact. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

Please refer to FIG. 1, an embodiment of the present application provides a multi-channel DC output device 10. The multiple DC output device 10 includes an AC-DC conversion circuit (AC-DC conversion circuit) 100, a voltage control circuit 200 and an interface panel 300. The voltage control circuit 200 is electrically connected to the AC-DC conversion circuit 100. The interface panel 300 includes a panel body 301, a DC output interface 310 and a voltage input component 320. The DC output interface 310 and the voltage input component 320 are both disposed on the panel body 301. The DC output interface 310 is electrically connected to the multiple output ends of the AC-DC conversion circuit 100. The voltage input component 320 is electrically connected to the voltage control circuit 200.

The AC-DC conversion circuit 100 is configured to convert AC power into a multiple-channel DC power with a preset voltage value and output through the DC output interface 310. The AC-DC conversion circuit 100 can be realized by a pure circuit structure, or can be realized by a combination of a software program and a circuit. The AC-DC conversion circuit 100 outputs at least two DC powers, and the specific voltage value of each DC power can be designed according to actual requirements. When outputting different voltage values, the specific circuit structure of the AC-DC conversion circuit is different. The multiple DC voltage values output by the AC-DC conversion circuit 100 are discontinuous fixed voltage values, for example, 5V, 12V, 20V, 24V, 36V, and 48V DC are output. The specific circuit, implementation mode, number of output DC voltage and voltage value of the AC-DC conversion circuit 100 are not limited in this application, and can be selected according to actual needs.

The input terminal of the voltage control circuit 200 is electrically connected to the voltage input component 320, and receives the target voltage value input by the voltage input component 320, that is, the required voltage value. The output terminal of the voltage control circuit 200 is electrically connected to the AC-DC conversion circuit 100 for selecting and controlling the voltage of the DC power output by the AC-DC conversion circuit 100. The voltage control circuit 200 is used to select one of the preset selection items. In other words, the voltage value selectable by the voltage control circuit 200 is an interval voltage value. For example, the voltage control circuit 200 can select at least two items among 5V, 12V, 20V, 24V, 36V, and 48V. The voltage control circuit 200 can be controlled by a pure hardware circuit, or can be controlled by a combination of a software program and a hardware circuit. The present application does not specifically limit the structure of the voltage control circuit 200, and it can be selected according to actual needs, as long as its function can be realized.

Mounting holes may be opened on the surface of the panel body 301, and the DC output interface 310 and the voltage input assembly 320 may pass through the mounting holes. The panel body 301 can be clamped on the wall of the place of use. The wall is correspondingly provided with grooves. Part or all of the DC output interface 310 and the voltage input assembly 320 protrude from the front of the panel body 301 to facilitate user operations. The AC-DC conversion circuit 100 and the voltage control circuit 200 may be arranged on the back of the panel body 301, or may be arranged in a groove of the wall body, and are only connected to the DC output interface 310 and the voltage input assembly. 320 are electrically connected by wires and the like. The size, material and shape of the panel body 301 are not limited, and can be selected according to actual needs. The DC output interface 310 is used for plugging in with electric equipment and outputting DC power to the electric equipment. The number and interface form of the DC output interface 310 can be set according to actual requirements. The voltage input component 320 may be a knob input component, a key input component, or a touch screen input component. This application does not limit the specific structure and model of the voltage input component 320, as long as the function can be realized.

The working process of the multi-channel DC output device 10 provided in this embodiment is as follows: the user inputs a required DC voltage value, such as 5V, to the voltage control circuit 200 through the voltage input component 320 on the panel body 301. The voltage control circuit 200 controls the AC-DC conversion circuit 100 to convert AC power into 5V DC power, and output it through the DC output interface 310. The electrical equipment can be directly electrically connected to the DC output interface 310 to obtain electricity and use electricity without an adapter.

In this embodiment, the multi-channel DC output device 10 includes the AC-DC conversion circuit 100, the voltage control circuit 200, and the interface panel 300. The interface panel 300 includes the panel body 301 and the DC output interface 310 and the voltage input component 320 provided on the panel body 301. The voltage input component 320 is electrically connected to the voltage control circuit 200. The voltage control circuit 200 is electrically connected to the AC-DC conversion circuit 100. The AC-DC conversion circuit 100 is electrically connected to the DC output interface 310. The multi-channel DC output device 10 provided in this embodiment outputs DC power to the panel body 301 through the AC-DC conversion circuit 100 and the DC output interface 310, and can supply power to electrical equipment without connecting an adapter. Easy and quick to use. In addition, the multi-channel DC output device 10 can be directly installed on a wall in the use environment through the interface panel 300, which saves installation space and is convenient to use. At the same time, through the voltage input component 320 and the voltage control circuit 200, a variety of DC power can be freely selected to adapt to different electrical equipment and improve the versatility and practicability of the multiple DC output device 10.

In one embodiment, the voltage input component 320 is a mechanical input component. The mechanical input component refers to a component that implements input and selection through mechanical principles, such as input knobs, input switches, and so on. The input knob or input switch includes multiple gear positions, and each gear position corresponds to a voltage value.

In one embodiment, the voltage input component 320 is a signal input component. The signal input component refers to a component that realizes the selection and input of voltage values through digital signals or analog signals, such as key input, keyboard input, touch screen input, etc. The signal input component allows the user to choose to input a preset voltage value.

Referring to FIG. 2, in one embodiment, the voltage control circuit 200 may include a plurality of voltage selection switches 210. Each of the voltage selection switches 210 is electrically connected to the voltage input component 320 respectively. At the same time, the voltage selection switch 210 is electrically connected to the multiple output terminals of the AC-DC conversion circuit 100 respectively. Each voltage selection switch 210 is electrically connected to an output terminal of the AC-DC conversion circuit 100, and each voltage selection switch 210 is used to control the output of a DC voltage.

Please continue to refer to FIG. 2. In one embodiment, the AC-DC conversion circuit 100 is used to convert AC power into at least 2 of 5V DC, 12V DC, 20V DC, 24V DC, 36V DC, and 48V DC. The AC to DC conversion circuit 100 includes a 220V AC to 5V DC conversion circuit 110, a 220V AC to 12V DC conversion circuit 120, a 220V AC to 20V DC conversion circuit 130, a 220V AC to 24V DC conversion circuit 140, and a 220V AC to 36V DC conversion circuit. At least two of the circuits 150 and 220V AC to 48V DC conversion circuit 160.

The 220V AC to 5V DC conversion circuit 110, the 220V AC to 12V DC conversion circuit 120, the 220V AC to 20V DC conversion circuit 130, the 220V AC to 24V DC conversion circuit 140, the 220V AC to 36V The input ends of the DC conversion circuit 150 and the 220V AC to 48V DC conversion circuit 160 are electrically connected to the plurality of voltage selection switches 210 respectively, and the output ends are all connected to the DC output interface 310. The multi-channel direct current output device 10 provided in this embodiment can realize 5V direct current, 12V direct current, 20V direct current, 24V direct current, 36V direct current, and 48V direct current output and multiple options, with simple structure and wide application range.

Referring to FIG. 3, in one embodiment, the voltage control circuit 200 includes a microprocessor (Microcontroller Unit, MCU) 220. The output terminal of the voltage input component 320 is electrically connected with the input terminal of the microprocessor 220, and the output terminal of the microprocessor 220 is electrically connected with the input terminal of the AC-DC conversion circuit 100. The voltage input component 320 receives the target voltage value input by the voltage input component, and controls the AC/DC conversion circuit 100 to output a voltage of a corresponding value according to the target voltage value. The manner in which the microprocessor 220 controls the AC-DC conversion circuit 100 includes but is not limited to pulse width modulation (PWM) signal control. In this embodiment, the microprocessor 220 is used to control the AC-DC conversion circuit 100, the circuit structure is simple, and the DC voltage output is accurate.

Please continue to refer to FIG. 3. In one embodiment, the output terminal of the AC-DC conversion circuit 100 may also be electrically connected to the input terminal of the microprocessor 220. The voltage value output by the AC-DC conversion circuit 100 after conversion is used as the feedback value of the microprocessor 220. The microprocessor 220 combines the target voltage value and the feedback value to adjust the AC to DC conversion circuit 100 in real time to further improve the accuracy of DC voltage output.

Please continue to refer to FIG. 3. In one embodiment, the AC-DC conversion circuit 100 includes an AC-DC sub-circuit 170, a step-down circuit 180, and a bridge driving circuit 190. The AC-DC sub-circuit 170 is used to convert alternating current into direct current with a preset voltage value. The input end of the AC-DC sub-circuit 170 is electrically connected to the AC power source 20. The output terminal of the AC-DC sub-circuit 170 is electrically connected to the input terminal of the step-down circuit 180. The control terminal of the step-down circuit 180 is electrically connected to the output terminal of the microprocessor 220 through the bridge driving circuit 190. At the same time, the output terminal of the voltage input component 320 is electrically connected to the input terminal of the microprocessor 220. The output terminal of the step-down circuit 180 is electrically connected to the DC output interface 310. The microprocessor 220 controls the operation of the bridge driving circuit 190 and the step-down circuit 180 according to the target voltage value input by the voltage input component 320. The step-down circuit 180 and the bridge driving circuit 190 output DC power of corresponding voltage. The step-down circuit 180 includes but is not limited to a step-down converter (BUCK) circuit. In an embodiment, a partial circuit diagram of the AC-DC conversion circuit 100 may be as shown in FIG. 4.

In one embodiment, the panel body 201 is a standard switch panel. That is, the size of the panel body 201 is one of 86 type, 118 type, 120 type or 146 type. Wherein, the appearance of the 86-type panel body 201 is square, and the external dimension is 86mm×86mm. The 86-type panel body 201 conforms to international standards, has strong versatility, and is firmly installed.

In an embodiment, the number of the DC output interface 310 is multiple. The multiple DC output ports 310 are all disposed on the panel body 301. Each of the DC output interfaces 310 is electrically connected to the multiple output terminals of the AC to DC conversion circuit 100. The provision of a plurality of the DC output interfaces 310 can satisfy the simultaneous use of a plurality of electrical equipment, and improve the practicability.

In one embodiment, the DC output interface 310 is a universal serial bus (USB) interface. The DC output interface 310 of the USB can be used to charge power-consuming devices in the form of USB such as mobile phones, players, and mice.

In one embodiment, the DC output interface 310 is a square interface or a circular interface. The DC output interface 310 of a square interface or a circular interface can improve the versatility of connection with electrical equipment.

Referring to FIG. 5, in one embodiment, the multiple DC output device 10 further includes a DC-DC conversion circuit (DC-DC conversion circuit) 400. The DC-DC conversion circuit 400 is used to convert DC power into multiple DC power outputs with preset voltage values. The DC to DC conversion circuit 400 is electrically connected to the voltage control circuit 200. The DC output interface 310 is electrically connected to the multiple output terminals of the DC-DC conversion circuit 400. Specifically, the input terminal of the DC-DC conversion circuit 400 is electrically connected to the DC power supply 30. The control terminal of the DC-DC conversion circuit 400 is electrically connected to the voltage control circuit 200. The multiple output ends of the DC-DC conversion circuit 400 are electrically connected to the DC output interface 310. In this embodiment, the DC-DC conversion circuit 400 enables the multi-channel DC output device 10 to provide DC power with different outputs without AC power, which further improves the practicality.

Referring to FIG. 6, in one embodiment, when the external power supply is a DC power supply 30, such as a 110V DC power supply, the DC-DC conversion circuit 400 includes a 5V DC conversion circuit 410, a 12V DC conversion circuit 420, and a 20V DC conversion circuit 430 , 24V DC conversion circuit 440, 36V DC conversion circuit 450 and 48V DC conversion circuit 460 at least two, used to adjust the current DC power supply voltage to at least 2 of 5V, 12V, 20V, 24V, 36V and 48V .

The 5V DC conversion circuit 410, the 12V DC conversion circuit 420, the 20V DC conversion circuit 430, the 24V DC conversion circuit 440, the 36V DC conversion circuit 450, and the 48V DC conversion circuit 460 The DC output interface 310 is electrically connected.

In one embodiment, the DC-DC conversion circuit 400 cooperates with the microprocessor 220 to convert the DC power of the DC power supply 30 into multiple DC power outputs of preset voltage values. The specific circuit structure of the AC AC converter 400 may be similar to the structure shown in FIG. 3. I will not repeat them here.

Referring to FIG. 7, in one embodiment, the multi-channel DC output device 10 further includes a power connection line 500. The power connection line 500 includes an input interface 510, an output interface 520 and a connection line 530. The input interface 510 and the output interface 520 are connected to two ends of the connecting line 530. The interface type of the input interface 510 can be matched with the DC output interface 310, so as to realize the plug connection with the DC output interface 310. The output interface 520 matches the power plug interface of the electrical equipment according to the different electrical equipment. By inserting the input interface 510 into the DC output interface 310, the output interface 520 is connected to the power supply interface of the electric device to realize power supply to the electric device. In this embodiment, the power-consuming device does not need a matching adapter or a matching connection line to realize power access, which is convenient to use and has strong practicability.

The above-mentioned embodiments only express a few implementation modes of the present application, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims

A multi-channel DC output device is characterized in that it comprises:

AC-DC conversion circuit (100), used for converting AC power into multiple DC power outputs of preset voltage values;

A voltage control circuit (200), electrically connected to the AC-DC conversion circuit (100), for controlling the AC-DC conversion circuit (100) to output a DC voltage;

The interface panel (300) includes a panel body (301), a DC output interface (310) and a voltage input component (320). The DC output interface (310) and the voltage input component (320) are both arranged on the panel Body (301), the DC output interface (310) is electrically connected to the multiple output ends of the AC-DC conversion circuit (100), and the voltage input component (320) is electrically connected to the voltage control circuit (200). Connected, the voltage input component (320) is used to input a target DC voltage to the voltage control circuit (200).
The multi-channel DC output device according to claim 1, wherein the voltage control circuit (200) comprises a plurality of voltage selection switches (210), and each of the voltage selection switches (210) is connected to the voltage The input component (320) is electrically connected to the AC-DC conversion circuit (100).
The multi-channel DC output device according to claim 2, characterized in that the AC to DC conversion circuit (100) comprises a 220V AC to 5V DC conversion circuit (110), a 220V AC to 12V DC conversion circuit (120), 220V At least two of AC to 20V DC conversion circuit (130), 220V AC to 24V DC conversion circuit (140), 220V AC to 36V DC conversion circuit (150), 220V AC to 48V DC conversion circuit (160), the The AC-DC conversion circuit (100) is used to convert AC power into at least 2 of 5V DC, 12V DC, 20V DC, 24V DC, 36V DC and 48V DC;

The 220V AC to 5V DC conversion circuit (110), the 220V AC to 12V DC conversion circuit (120), the 220V AC to 20V DC conversion circuit (130), the 220V AC to 24V DC conversion circuit (140) ), the input ends of the 220V AC to 36V DC conversion circuit (150) and the 220V AC to 48V DC conversion circuit (160) are electrically connected to the plurality of voltage selection switches (210), and the output ends are all connected to the The DC output interface (310) is connected.
The multi-channel DC output device according to claim 1, wherein the voltage control circuit (200) comprises a microprocessor (220), and the output terminal of the voltage input component (320) is connected to the microprocessor The input terminal of (220) is electrically connected, and the output terminal of the microprocessor (220) is electrically connected with the input terminal of the AC-DC conversion circuit (100).
The multi-channel DC output device according to claim 4, characterized in that the microprocessor (220) controls the AC-DC conversion circuit (100) through a pulse width modulation signal.
The multi-channel DC output device according to claim 4, wherein the output terminal of the AC-DC conversion circuit (100) is electrically connected to the input terminal of the microprocessor (220).
The multi-channel DC output device according to claim 4, wherein the AC-DC conversion circuit (100) comprises an AC-DC sub-circuit (170), a step-down circuit (180) and a bridge drive circuit (190), The input end of the AC-DC sub-circuit (170) is electrically connected to an AC power supply (20), and the output end of the AC-DC sub-circuit (170) is electrically connected to the input end of the step-down circuit (180), The control end of the step-down circuit (180) is electrically connected to the output end of the microprocessor (220) through the bridge drive circuit (190), and the output end of the step-down circuit (180) is connected to the DC The output interface (310) is electrically connected.
The multi-channel DC output device according to claim 7, characterized in that the step-down circuit (180) comprises a step-down conversion circuit.
The multi-channel DC output device according to claim 1, wherein the panel body (301) is an 86-type panel, a 118-type panel, a 120-type panel or a 146-type panel.
The multi-channel DC output device according to claim 1, wherein the number of the DC output interfaces (310) is multiple, and each of the DC output interfaces (310) is provided on the panel body (301), And are electrically connected to the multiple output terminals of the AC-DC conversion circuit (100).
The multi-channel DC output device according to claim 1, wherein the DC output interface (310) is a universal serial bus interface.
The multi-channel DC output device according to claim 1, wherein the DC output interface (310) is a circular socket or a square socket.
The multi-channel DC output device according to claim 1, wherein the voltage input component (320) is a mechanical input component.
The multi-channel DC output device according to claim 13, wherein the mechanical input component is an input knob or an input switch, the input knob or the input switch includes a plurality of gear positions, each of the gear positions Corresponds to a voltage value.
The multi-channel DC output device according to claim 1, wherein the voltage input component (320) is a signal input component.
The multi-channel DC output device according to claim 15, wherein the signal input component is a key input component, a keyboard input component or a touch screen input component.
The multi-channel DC output device according to claim 1, further comprising:

A DC-DC conversion circuit (400), the DC-DC conversion circuit (400) is electrically connected to the voltage control circuit (200), and the DC output interface (310) is multiplexed with the DC-DC conversion circuit (400) The output ends are electrically connected, and the DC-DC conversion circuit (400) is used to convert the DC power into a multi-channel DC power output with a preset voltage value.
The multi-channel DC output device according to claim 17, characterized in that the input end of the DC-DC conversion circuit (400) is electrically connected with a DC power supply (30).
The multi-channel DC output device according to claim 17, characterized in that the DC-DC conversion circuit (400) comprises a 5V DC conversion circuit (410), a 12V DC conversion circuit (420), and a 20V DC conversion circuit (430) , At least 2 of 24V DC conversion circuit (440), 36V DC conversion circuit (450) and 48V DC conversion circuit (460);

The 5V DC conversion circuit (410), the 12V DC conversion circuit (420), the 20V DC conversion circuit (430), the 24V DC conversion circuit (440), the 36V DC conversion circuit (450), The 48V DC conversion circuit (460) is electrically connected to the DC output interface (310).
The multi-channel DC output device according to claim 1, further comprising:

Power connection line (500), the power connection line (500) includes an input interface (510), an output interface (520) and a connection line (530), the input interface (510) and the output interface (520) are connected At both ends of the connecting wire (530), the input interface (510) can be matched and plugged with the DC output interface (310) to realize electrical connection, and the power connecting wire (500) is used to realize the direct current The electrical connection between the output interface (310) and the electrical equipment.