CN220492847U

CN220492847U - Power supply unit

Info

Publication number: CN220492847U
Application number: CN202322080129.5U
Authority: CN
Inventors: 曾振江; 李敏; 向昕
Original assignee: Dimension Corp
Current assignee: Dimension Corp
Priority date: 2023-08-03
Filing date: 2023-08-03
Publication date: 2024-02-13
Anticipated expiration: 2033-08-03

Abstract

The utility model discloses a power supply unit, comprising: a housing; the at least one direct current input assembly comprises a direct current wiring switching copper bar and a direct current binding post, and the direct current binding post is connected with the input end of the direct current wiring switching copper bar; the direct current power supply cable is connected with the output end of the direct current wiring transfer copper bar; the alternating current input wiring assembly comprises an alternating current wiring terminal and an alternating current line pressing screw, and the alternating current line pressing screw is connected with the input end of the alternating current wiring terminal; and the alternating current power supply cable is connected with the output end of the alternating current wiring terminal. The power supply unit is compatible with Direct Current (DC) and Alternating Current (AC) input power supply, so that the power supply unit can work under different power supply conditions, can accept input from a direct current power supply or an alternating current power supply, and converts the input into power supply output suitable for an inverter, is suitable for different power supply schemes of a customer site, and provides greater flexibility and reliability.

Description

Power supply unit

Technical Field

The utility model belongs to the field of inverter power supply systems, and particularly relates to a power supply unit.

Background

In the related art, an inverter power supply system is a power conversion system for converting Direct Current (DC) power into Alternating Current (AC) power so that an AC power device can be operated without the AC power. The power supply unit is an important component of an inverter power supply system, and its input is usually from a direct current power source, such as a battery pack, a solar panel, or the like. This allows the inverter power supply system to be adapted to only the supply conditions of the direct current power supply and to be operated only under a single power supply condition.

Disclosure of Invention

The utility model aims to provide a power supply unit compatible with alternating current input and direct current input.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

a power supply unit comprising:

a housing;

the direct-current input assembly comprises a direct-current wiring switching copper bar and a direct-current wiring terminal, and the direct-current wiring terminal is connected with the input end of the direct-current wiring switching copper bar;

the direct current power supply cable is connected with the output end of the direct current wiring transfer copper bar;

the alternating current input wiring assembly comprises an alternating current wiring terminal and an alternating current line pressing screw, and the alternating current line pressing screw is connected with the input end of the alternating current wiring terminal;

and the alternating current power supply cable is connected with the output end of the alternating current wiring terminal.

Further, the number of the direct current input assemblies is multiple, and the multiple direct current input assemblies are staggered in the depth direction and the length direction of the shell.

Further, the direct current input assembly further comprises a direct current bracket, and the direct current wiring switching copper bar is fixedly installed on the direct current bracket.

Further, the number of the direct-current wiring switching copper bars is multiple, and the direct-current wiring switching copper bars are stacked together in the vertical direction.

Further, the direct-current wiring switching copper bar comprises a first sub-bar, a second sub-bar and a third sub-bar, wherein the first sub-bar, the second sub-bar and the third sub-bar are sequentially connected together to form a side U-shaped, and the second sub-bar is fixedly connected with the direct-current bracket and the direct-current wiring terminal.

Further, the surfaces of the first sub-row and the third sub-row are provided with insulating layers.

Further, the direct current input assembly is fixedly arranged on one side of the inner space of the shell, and the alternating current input wiring assembly is fixedly arranged on the other side of the inner space of the shell.

Further, the shell comprises a detachable backboard, a top cover, a bottom plate, a direct current side plate and an alternating current side plate, wherein the direct current binding post and the alternating current line pressing screw face the backboard.

Further, the backboard is provided with a mounting hole, and the mounting hole is in a calabash shape for directional use.

Further, at least one wire passing ring for the direct current power cable to pass through is arranged on the direct current side plate.

Further, the shell further comprises a wire clamping plate, the wire clamping plate is detachably mounted on the alternating-current side plate, and a wire passing hole for an alternating-current power supply cable to pass through is formed in the wire clamping plate.

Further, an indication tag for indicating parameters of each direct current binding post is fixedly installed on the bottom plate, and the indication tag is fixed on the bottom plate between the direct current input assembly and the back plate.

Further, the ac input terminal assembly further includes a terminal support, the ac terminal being fixedly mounted on the terminal support.

The utility model has the beneficial effects that:

the power supply unit is compatible with Direct Current (DC) and Alternating Current (AC) input power supply, so that the power supply unit can work under different power supply conditions, can accept input from a direct current power supply or an alternating current power supply, and converts the input into power supply output suitable for an inverter, is suitable for different power supply schemes of a customer site, and provides greater flexibility and reliability.

Drawings

FIG. 1 is an exploded view of a power supply unit of the present utility model in one embodiment;

FIG. 2 is a top view of a power supply unit of the present utility model in one embodiment;

FIG. 3 is a DC side view of a power supply unit of the present utility model in one embodiment;

FIG. 4 is an alternating current side view of the power supply unit of the present utility model in one embodiment;

fig. 5 is a schematic perspective view of a dc input assembly 200 according to an embodiment of the utility model.

The reference numerals include:

100-housing 110-back plate 111-mounting hole

120-top cover 130-bottom plate 140-DC side plate

141-wire ring 150-alternating current side plate 151-wire clamping plate

152-via 160-indicator tag 200-dc input assembly

210-DC support 220-DC wiring transfer copper bar 221-first sub-bar

222-second subcolumn 223-third subcolumn 230-dc terminals

240-insulating layer 300-ac input wiring assembly 310-ac wiring terminal

320-ac line pressing screw 400-dc power supply cable 330-binding post support

500-ac power supply cable

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1, a preferred embodiment of the present utility model is shown, the power supply unit includes: a housing 100; at least one dc input assembly 200 comprising a dc link adapter copper bar 220 and a dc terminal 230, the dc terminal 230 being connected to an input of the dc link adapter copper bar 220; a dc power supply cable 400 connected to the output end of the dc connection switching copper bar 220; an ac input terminal assembly 300 comprising an ac terminal 310, an ac crimp screw 320, and a terminal support 330, the ac crimp screw 320 being coupled to an input of the ac terminal 310; the ac terminal 310 is fixedly mounted on the terminal holder 330; an ac power supply cable 500 is connected to the output end of the ac terminal 310.

The customer connects a dc power cable (not shown) and an ac power cable (not shown) to the dc input assembly 200 and the ac input wiring assembly 300, respectively, from the rear surface of the housing 100, as shown in fig. 2, and connects the dc power cable 400 and the ac power cable 500, respectively, on the front panel side to a power system (not shown). The dc power supply cable 400 and the ac power supply cable 500 are already connected to the power supply system when shipped, and the customer only needs to connect the dc power supply cable and the ac power supply cable to the dc wiring transfer copper bar 220 and the ac input wiring assembly 300. Since the power supply system is the prior art and is not the utility model point of the present application, the description is omitted here.

The power supply unit mainly includes a housing 100, a dc input assembly 200, an ac input wiring assembly 300, a dc power supply cable 400, and an ac power supply cable 500. The housing 100 is mainly used for accommodating the dc input assembly 200 and the ac input wiring assembly 300. The dc input assembly 200 is responsible for converting the input power of the dc power source into dc power suitable for the power system. The ac input wiring assembly 300 can control and switch the path of the ac input so that the power system can be powered from the ac power source when needed. The ac input wiring assembly 300 allows for connection of an ac power source to other power source types, such as a dc power source. When input from an ac power source is desired, the switch may be switched to the ac input path to introduce ac power into the power system. The ac input wiring assembly 300 enables the power system to accept both dc and ac inputs. Therefore, the system can select the most appropriate power supply type according to actual requirements and resource conditions, and the flexibility and adaptability of the system are improved. The above components are each described in further detail below.

As shown in fig. 1, the housing 100 has a substantially rectangular parallelepiped box shape overall, and a back plate 110, a top cover 120, a bottom plate 130, a dc side plate 140, an ac side plate 150, and a front plate (not shown). Specifically, the back plate 110 is disposed opposite to the front plate, the top cover 120 is disposed opposite to the bottom plate 130, and the dc side plate 140 is disposed opposite to the ac side plate 150.

To facilitate the insertion of dc power cables and ac power cables into the dc input assembly 200 and ac input wiring assembly 300, the back plate 110 is configured to be removable with the dc terminals 230 and ac voltage screws 320 facing the back plate 110. In order to facilitate the disassembly of the back plate 110, the back plate 110 is provided with a mounting hole 111, and the mounting hole 111 is shaped like a calabash used in an oriented manner. Fasteners such as screws are inserted into the mounting holes 111 to connect the back plate 110 with the top cover 120, the bottom plate 130, the dc side plate 140, and the ac side plate 150. The back plate 110 is disassembled without disassembling the fastener; only after the fastener is unscrewed, the back plate 110 is taken out from one side direction; when the backboard 110 is installed, the backboard 110 is pushed in from one side direction, and then the fastener is screwed down, so that the arrangement is convenient to operate, and the fastener can be prevented from being lost.

As shown in fig. 1, the dc input assembly 200 is fixedly installed at one side of the inner space of the housing 100, and the ac input wiring assembly 300 is fixedly installed at the other side of the inner space of the housing 100. As shown in fig. 3, at least one wire loop 141 through which the dc power cable passes is provided on the dc side plate 140 near the dc input assembly 200. As shown in fig. 4, a detachable wire clamping plate 151 is mounted on the ac side plate 150 near the ac input terminal assembly 300, and a wire passing hole 152 through which an ac power cable passes is formed in the wire clamping plate 151.

The number of the dc input assemblies 200 is plural, and the plural dc input assemblies 200 are staggered in the depth direction and the length direction of the housing 100. A plurality of dc input assemblies 200 are stacked together to form a set of dc input assemblies 200. In one embodiment of the present application, as shown in fig. 1, the dc input assemblies 200 have three groups, and the three groups of dc input assemblies 200 are sequentially staggered from left to right in a front-to-back direction. An indication tag 160 is fixedly mounted on the base plate 130 to indicate the parameters of each of the dc terminals 230. Specifically, the indication tag 160 is fixed on the base plate 130 between the dc input assembly 200 and the back plate 110.

The dc input assembly 200 includes a dc bracket 210, a dc link adapter copper bar 220, and a dc link 230. The dc wiring transfer copper bar 220 is fixedly mounted on the dc bracket 210, and the dc wiring post 230 is connected to the dc wiring transfer copper bar 220. The dc wiring transfer copper bar 220 includes an input end and an output end, and the dc terminal 230 is connected to the input end of the dc wiring transfer copper bar 220; the dc power supply cable 400 is connected to the output end of the dc link switching copper bar 220.

The number of the dc wiring transfer copper bars 220 is plural, and the dc wiring transfer copper bars 220 are stacked together in the vertical direction. As shown in fig. 5, specifically, the dc wiring transfer copper bar 220 includes a first sub-bar 221, a second sub-bar 222 and a third sub-bar 223, where the first sub-bar 221, the second sub-bar 222 and the third sub-bar 223 are sequentially connected together to form a side-set "U" shape. The second sub-row 222 is fixedly connected with the dc bracket 210 and the dc terminal 230. In order to ensure safety, the surfaces of the first sub-row 221 and the third sub-row 223 are provided with an insulating layer 240 to prevent damages such as current leakage and electric shock. Preferably, the insulating layer 240 is an insulating film coated on the surfaces of the first and third subrows 221 and 223.

The ac input connection assembly 300 is mainly used for an ac input connection path, and specifically includes an ac connection terminal 310, an ac line ball screw 320, and a connection terminal support 330. The ac wiring terminal 310 includes an input end and an output end, and the ac wire pressing screw 320 is connected with the input end of the ac wiring terminal 310; the ac terminal 310 is fixedly mounted on the terminal holder 330; an ac power supply cable 500 is connected to the output end of the ac terminal 310. The power supply unit is internally provided with an alternating current input wiring assembly and a direct current input assembly, so that a customer can flexibly select alternating current or direct current power supply wiring input according to the working condition of the site.

When in use, a customer needs to remove the back plate 110, then pass the direct-current power cable through the wire loop 141, and connect the direct-current power cable to the direct-current binding post 230 on the back of the power supply unit, thus completing the wiring of the direct-current side; an alternating current power cable passes through the wire through hole 152, and is connected to the alternating current wire pressing screw 320 at the back of the power supply unit, so that the wiring of the alternating current side is completed; finally, the back plate 110 is installed.

The foregoing is merely exemplary of the present utility model, and many variations may be made in the specific embodiments and application scope of the utility model by those skilled in the art based on the spirit of the utility model, as long as the variations do not depart from the gist of the utility model.

Claims

1. A power supply unit, characterized by comprising:

a housing (100);

the direct current input assembly (200) comprises a direct current wiring switching copper bar (220) and a direct current wiring terminal (230), wherein the direct current wiring terminal (230) is connected with the input end of the direct current wiring switching copper bar (220);

the direct current power supply cable (400) is connected with the output end of the direct current wiring switching copper bar (220);

an alternating current input wiring assembly (300) comprising an alternating current wiring terminal (310) and an alternating current wire pressing screw (320), wherein the alternating current wire pressing screw (320) is connected with the input end of the alternating current wiring terminal (310);

an ac power supply cable (500) is connected to the output end of the ac terminal (310).

2. The power supply unit according to claim 1, wherein the number of the dc input components (200) is plural, and plural dc input components (200) are arranged in a staggered manner in the depth direction and the length direction of the housing (100).

3. The power supply unit of claim 1, wherein the dc input assembly (200) further comprises a dc bracket (210), the dc link adapter copper bar (220) being fixedly mounted on the dc bracket (210).

4. A power supply unit according to claim 3, characterized in that the number of the dc wiring transfer copper bars (220) is plural, and that a plurality of the dc wiring transfer copper bars (220) are stacked together in the vertical direction.

5. A power supply unit according to claim 3, wherein the dc wiring transfer copper bar (220) comprises a first sub-bar (221), a second sub-bar (222) and a third sub-bar (223), the first sub-bar (221), the second sub-bar (222) and the third sub-bar (223) are sequentially connected together to form a side-mounted "U" shape, and the second sub-bar (222) is fixedly connected with the dc bracket (210) and the dc terminal (230).

6. The power supply unit according to claim 5, characterized in that the surfaces of the first (221) and third (223) sub-row are provided with an insulating layer (240).

7. The power supply unit according to claim 1, wherein the dc input assembly (200) is fixedly installed at one side of the inner space of the housing (100), and the ac input wiring assembly (300) is fixedly installed at the other side of the inner space of the housing (100).

8. The power supply unit of claim 7, wherein the housing (100) includes a removable back plate (110) and top cover (120), bottom plate (130), dc side plate (140) and ac side plate (150), the dc terminal post (230) and ac line ball screw (320) being oriented toward the back plate (110).

9. The power supply unit according to claim 8, characterized in that the back plate (110) is provided with mounting holes (111), and the mounting holes (111) are shaped like a gourd opening for directional use.

10. The power supply unit according to claim 8, wherein at least one wire loop (141) through which a dc power cable passes is provided on the dc side plate (140).

11. The power supply unit according to claim 8, wherein the housing (100) further comprises a wire clamping plate (151), the wire clamping plate (151) is detachably mounted on the ac side plate (150), and a wire passing hole (152) through which an ac power cable passes is formed in the wire clamping plate (151).

12. The power supply unit according to claim 8, characterized in that an indication tag (160) for indicating a parameter of each dc terminal (230) is fixedly mounted on the base plate (130), the indication tag (160) being fixed on the base plate (130) between the dc input assembly (200) and the back plate (110).

13. The power supply unit according to any one of claims 1-12, wherein the ac input connection assembly (300) further comprises a connection terminal mount (330), the ac connection terminal (310) being fixedly mounted on the terminal mount (330).