Power distribution unit

Abstract

The present utility model provides a power distribution unit, comprising a housing, an auxiliary power supply, an electricity meter, a PDU module, and copper busbars. The housing has an accommodating cavity. The PDU module is fixedly connected into the accommodating cavity. A first opening, a second opening and a third opening which are communicated with the accommodating cavity are formed in the housing. The auxiliary power supply is detachably assembled in the accommodating cavity and directly faces the first opening. The electricity meter is fixedly connected into the accommodating cavity and directly faces the second opening. The copper busbars are partially located in the accommodating cavity and partially protrude out of the third opening. The present utility model realizes function modularization. In this way, the internal layout of a charging pile cabinet is simplified, thereby releasing the internal space of the charging pile cabinet; and a cabinet housing does not require a large number of press rivets for component mounting, thereby improving the aesthetic appearance. The power distribution unit is decoupled from a charging pile system, and thus can be produced and stocked separately, tested separately, packaged and transported separately to the site for installation, thereby shortening the production lead time of a charging pile.

Description

A power distribution unit

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on October 11, 2023, with application number 202322736087.6 and invention name “A Power Distribution Unit”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the technical field of power distribution units, and in particular relates to a power distribution unit. Background Art

[0004] With the popularization of new energy vehicles, communication energy and energy storage equipment, there are more and more charging equipment. However, most of the internal distribution devices such as charging piles and energy storage equipment are not decoupled from the cabinets, which cannot meet the customized needs of different customers. This is not conducive to mass production and increases the customization cost of the charging pile industry. Technical issues

[0005] The technical purpose of this application is to provide a power distribution unit, which aims to solve the technical problem in the related art that internal power distribution devices such as charging piles and energy storage equipment are not decoupled from the cabinet. Technical Solutions

[0006] The power distribution unit of the embodiment of the present application is used for a charging pile. The power distribution unit includes: a shell, an auxiliary power supply, an electric meter, a PDU module and a copper busbar. The shell has a receiving cavity, and the PDU module is fixedly connected to the receiving cavity. The shell is provided with a first opening, a second opening and a third opening connected to the receiving cavity. The auxiliary power supply can be detachably assembled in the receiving cavity and is opposite to the first opening. The electric meter is fixedly connected to the receiving cavity and is opposite to the second opening. The copper busbar is partially located in the receiving cavity and partially protrudes from the third opening. Beneficial effects

[0007] The power distribution unit of the present application includes a housing with a receiving cavity, and an auxiliary power supply, an electric meter, a PDU module, and a copper busbar assembled within the receiving cavity. The auxiliary power supply is located at a first opening, allowing it to be removed from the first opening for maintenance. The electric meter is located at a second opening, allowing it to be read from the second opening. The copper busbar protrudes from a third opening and serves as both an input interface for the PDU module and an output interface for power distribution within the charging pile. This application integrates the electrical components, previously installed separately within the charging pile body, into the receiving cavity, integrating the complex functions of the charging pile system into modules and achieving functional modularization. This simplifies the internal layout of the charging pile cabinet, freeing up space within the cabinet for expansion of other functions. Furthermore, the cabinet shell no longer requires extensive riveting to install components, improving the cabinet's appearance. The power distribution unit of the present application is decoupled from the charging pile system, allowing it to be produced, stocked, tested, packaged, and shipped separately for on-site installation, improving the production and delivery cycle of charging piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0009] FIG1 is a schematic structural diagram of a power distribution unit in an embodiment of the present application;

[0010] FIG2 is a schematic diagram of a partial structure of a power distribution unit in an embodiment of the present application;

[0011] FIG3 is an exploded view of a power distribution unit in an embodiment of the present application.

[0012] In the accompanying drawings, the reference numerals represent: 1. shell; 2. auxiliary power supply; 3. electric meter; 4. copper busbar; 5. first assembly plate; 51. first main body; 52. first connecting part; 6. monitoring module; 7. second assembly plate; 71. second main body; 72. second connecting part; 8. fan; 9. third assembly plate; 10. receiving chamber; 11. gripping part. Modes for Carrying Out the Invention

[0013] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0014] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0016] Please refer to Figures 1-3. The present invention provides a power distribution unit for a charging pile. The power distribution unit includes: a shell 1, an auxiliary power supply 2, an electric meter 3, a PDU module and a copper bus 4. The shell 1 has a receiving cavity 10. The PDU module is fixedly connected to the receiving cavity 10. The shell 1 is provided with a first opening, a second opening and a third opening connected to the receiving cavity 10. The auxiliary power supply 2 can be detachably assembled in the receiving cavity 10 and is opposite to the first opening. The electric meter 3 is fixedly connected to the receiving cavity 10 and is opposite to the second opening. The copper bus 4 is partially located in the receiving cavity 10 and partially protrudes from the third opening.

[0017] The power distribution unit of the present invention includes a housing 1 having a receiving cavity 10, and an auxiliary power supply 2, an electric meter 3, a PDU module, and a copper busbar 4 assembled within the receiving cavity 10. The auxiliary power supply 2 is located at a first opening, allowing it to be removed from the first opening for maintenance. The electric meter 3 is located at a second opening, allowing it to be read from the second opening. The copper busbar 4 protrudes from the third opening and serves as both an input interface for the PDU module and an output interface for power distribution within the charging pile. The present invention integrates the electrical components that were originally installed separately within the charging pile body into the receiving cavity 10, integrating the complex functions of the charging pile system into modules and achieving functional modularization. This simplifies the internal layout of the charging pile cabinet, freeing up space within the cabinet for expansion of other functions. Furthermore, the cabinet shell no longer requires extensive riveting to install components, improving the cabinet's appearance. The power distribution unit of the utility model is decoupled from the charging pile system, so that it can be produced and stocked separately, tested separately, packaged separately and transported to the site for installation, thereby improving the production and delivery cycle of the charging pile.

[0018] Furthermore, the power distribution unit also includes a first assembly plate 5 that is partially located in the accommodating cavity 10 and partially located outside the first opening. The portion of the first assembly plate 5 located outside the first opening is detachably connected to the shell 1, and the auxiliary power supply 2 is fixedly connected to the first assembly plate 5.

[0019] Specifically, in this embodiment, the housing 1 is primarily a rectangular parallelepiped structure, i.e., the housing 1 has six sides, with a first opening formed on the first side of the housing 1. The auxiliary power supply 2 can be fixedly connected to the first assembly plate 5 by screws or a snap-fit ​​connection. A portion of the first assembly plate 5 is located outside the first opening, and the portion of the first assembly plate 5 located outside the first opening is detachably connected to the housing 1, such as by screws or a snap-fit ​​connection. Therefore, when disassembling the auxiliary power supply 2, the portion of the first assembly plate 5 located outside the first opening can be detached from the housing 1, and then the first assembly plate 5 can be pulled out of the receiving cavity 10 through the first opening. At this point, the auxiliary power supply 2 fixedly connected to the first assembly plate 5 will also be pulled out through the first opening, thereby facilitating maintenance and testing of the auxiliary power supply 2. During disassembly, only the portion of the first assembly plate 5 located outside the first opening needs to be detached from the housing 1. This utility model features a simple installation method, facilitating on-site maintenance and inspection.

[0020] Furthermore, the first assembly plate 5 includes a first main body portion 51 and a first connecting portion 52. The first main body portion 51 and the first connecting portion 52 are arranged vertically. The first main body portion 51 is located in the accommodating cavity 10, and the auxiliary power supply 2 is fixedly connected to the first main body portion 51; the first connecting portion 52 is arranged outside the first opening and is detachably connected to the shell 1.

[0021] Specifically, in this embodiment, the first assembly plate 5 is L-shaped, with one side being a first main body 51 and the other side being a first connecting portion 52. The first opening is rectangular and can be located in the middle, left of the middle, right of the middle, above the middle, below the middle, or above the left of the middle, etc., of the first side surface, so that a first gap is defined between the bottom edge of the first opening and the bottom edge of the first side surface. Therefore, when the first main body 51 is located within the receiving cavity 10, the first main body 51 abuts against the bottom of the receiving cavity 10, and the first connecting portion 52, which is perpendicular to the first main body 51, is located within the first gap. The first gap is a portion of the first side surface, and the first connecting portion 52 can be detachably connected to the first gap, for example, by screws, snaps, etc. When disassembling the auxiliary power supply 2, the first connecting portion 52 can be first removed from the first spacer by screwing or snapping it apart, and then the first connecting portion 52 can be pulled. The first main body 51, which is arranged perpendicular to the first connecting portion 52, can be pulled out of the receiving cavity 10 through the first opening. At this time, the auxiliary power supply 2 fixedly connected to the first main body 51 can also be pulled out through the first opening, thereby facilitating maintenance of the auxiliary power supply 2. When disassembling, only the first connecting portion 52 needs to be removed and separated from the housing 1. Therefore, it is easy to operate and reduces the difficulty of maintenance.

[0022] In other embodiments, the first assembly plate 5 may not be L-shaped. A connecting structure may be provided between the first connecting portion 52 and the first main portion 51. For example, a second gap may exist between the left side of the first opening and the left side of the first side surface. In this case, the first connecting portion 52 and the second gap are detachably connected, the bottom of the auxiliary power supply 2 is aligned with the first main portion 51, and the connecting structure is aligned with the left side of the auxiliary power supply 2. Preferably, the first assembly plate 5 is L-shaped to save material and space while also ensuring aesthetics.

[0023] Furthermore, the power distribution unit further includes a monitoring module 6 . The housing 1 is provided with a fourth opening. The power distribution unit can be detachably assembled in the receiving cavity 10 and is opposite to the fourth opening.

[0024] In this embodiment, the power distribution unit also includes a monitoring module 6. Compared with the related art, the power distribution unit of the present invention is also provided with a monitoring function, and the monitoring module 6 is decoupled from the charging pile system, so it can be produced and tested separately, which is beneficial to the customized needs of different customers around the world. The monitoring module 6 is used to connect the copper bus 4, as well as the controller, contactor, etc. of the PDU module, and can also communicate with the host computer to achieve networking. In addition, the monitoring module 6 is detachably connected to the receiving chamber 10. Therefore, when the monitoring module 6 needs to be tested, the monitoring module 6 can be removed from the housing 1 through the fourth opening. The utility model has a simple installation method, which is convenient for on-site maintenance and repair.

[0025] Furthermore, the power distribution unit also includes a second assembly plate 7 partially located in the accommodating cavity 10 and partially located outside the fourth opening. The second assembly plate 7 is detachably connected to the shell 1, and the monitoring module 6 is fixedly connected to the second assembly plate 7.

[0026] Specifically, in this embodiment, a fourth opening is provided on the second side surface of the housing 1. The first and second side surfaces are arranged perpendicularly, and the second side surface is located at the top of the first side surface. The fourth opening is primarily provided on one side of the second side surface near the first side surface, that is, in the area of ​​the receiving chamber 10 near the first and second side surfaces, which simultaneously accommodates the auxiliary power supply 2 and the monitoring module 6. Therefore, the housing 1 also forms a raised area protruding from the surface of the rectangular parallelepiped in this area, so that one side surface of the housing 1 is formed into an L-shape, thereby better accommodating the auxiliary power supply 2 and the monitoring module 6 and having a certain aesthetic appeal. The monitoring module 6 can be fixedly connected to the second assembly plate 7 by means of screw connection or snap connection. Part of the second assembly plate 7 is located outside the fourth opening, and the portion of the second assembly plate 7 located outside the fourth opening is detachably connected to the housing 1, for example, by screw connection or snap connection. Therefore, when disassembling the monitoring module 6, the portion of the second assembly plate 7 located outside the fourth opening can be removed from the housing 1. The second assembly plate 7 can then be pulled out of the receiving chamber 10 through the fourth opening. At this time, the auxiliary power supply 2 fixedly connected to the second assembly plate 7 can also be pulled out through the fourth opening, thereby facilitating maintenance and testing of the auxiliary power supply 2. During disassembly, only the portion of the second assembly plate 7 located outside the fourth opening needs to be removed and separated from the housing 1. This utility model has a simple installation method and facilitates on-site maintenance and inspection.

[0027] Furthermore, the second assembly plate 7 includes a second main body portion 71 and a second connecting portion 72. The second main body portion 71 and the second connecting portion 72 are arranged vertically. The second main body portion 71 is located in the accommodating cavity 10, and the monitoring module 6 is fixedly connected to the second main body portion 71; the second connecting portion 72 is arranged outside the fourth opening and is detachably connected to the shell 1.

[0028] Specifically, in this embodiment, the second assembly plate 7 is L-shaped, with one side being a second main body portion 71 and the other side being a second connecting portion 72. The fourth opening is rectangular, with a third gap between the left side of the fourth opening and the left side of the second side surface, and a fourth gap between the right side of the fourth opening and the right side of the second side surface. In this embodiment, two second assembly plates 7 are provided, with the second main body portion 71 of one second assembly plate 7 being fixedly connected to the left side of the monitoring module 6 and positioned within the receiving cavity 10, and the second main body portion 71 of the other second assembly plate 7 being fixedly connected to the right side of the monitoring module 6 and positioned within the receiving cavity 10. When the second main body portion 71 is positioned within the receiving cavity 10, the first connecting portion 52, which is arranged perpendicular to the first main body portion 51, can be positioned at the third and fourth gaps. The third and fourth gaps are part of the second side surface, and the two second connecting portions 72 are detachably connected to the third and fourth gaps, respectively, for example, by screws, snaps, or the like. When disassembling the monitoring module 6, the two second connecting portions 72 can be first removed from the third and fourth compartments by screwing or snapping them apart, and then the second connecting portion 72 can be pulled. The first main portion 51, which is perpendicular to the second connecting portion 72, can be pulled out of the receiving cavity 10 through the fourth opening. At this time, the monitoring module 6 fixedly connected to the second main portion 71 can also be pulled out through the fourth opening, making it easier to repair the monitoring module 6. When disassembling, only the second connecting portion 72 needs to be removed from the housing 1. Therefore, it is easy to operate and reduces the difficulty of repair.

[0029] Furthermore, the shell 1 is provided with a number of heat dissipation holes; the PDU module is integrated with a heat dissipation control unit, which can perform forced heat dissipation control according to the heat changes in the receiving cavity 10. Specifically, the power distribution unit is assembled and connected to the charging pile body, and the power distribution unit is located in the air duct of the charging pile. Traditional power distribution units do not have their own heat dissipation modules, especially after the high-power fast charging demand in the charging pile industry, the short-term temperature rise is very large, and the heat dissipation control unit of this embodiment can detect the temperature value in the receiving cavity 10, and compare the detected temperature value with the preset threshold. When the detected temperature value is greater than the preset threshold, the heat dissipation control unit will control the PDU module to dissipate heat, and bring the heat out of the receiving cavity 10 through the heat dissipation, and then out of the pile body. Therefore, the utility model can improve the reliability and safety of the product.

[0030] Furthermore, the power distribution unit also includes a fan 8. The housing 1 has a fifth opening, and the power distribution unit can be removably assembled within the receiving cavity 10, facing the fifth opening. Specifically, the fifth opening is located on the third side of the housing 1, which is opposite the first side. Fan 8 accelerates heat dissipation from the PDU module, removing heat from the receiving cavity 10 and, in turn, from the charging station. Fan 8 is optional; when high-power configuration is required, an axial fan can be added to enhance the PDU's heat dissipation capabilities.

[0031] Furthermore, the power distribution unit also includes a third assembly plate 9, which covers the third opening. The third assembly plate 9 is provided with a through hole, and the copper busbar 4 can protrude out of the accommodating cavity 10 through the through hole. Specifically, in this embodiment, a third opening is provided on the fourth side and the fifth side of the shell 1, wherein the fourth side and the fifth side are respectively on the left and right sides of the first side, and the power distribution unit includes two third assembly plates 9 and multiple copper busbars 4, and each third assembly plate 9 is also provided with multiple through holes, and the copper busbars 4 correspond to the through holes one by one. The through holes of the two third assembly plates 9 can be the same or different. The copper busbar 4 is both the input interface of the PDU module and the output interface of the internal power distribution of the charging pile. It can be flexibly configured according to power requirements, charging gun heads, deployment, etc. For example, the copper busbar 4 can be equipped with double guns or single guns according to needs. The utility model can realize the regular combination change of the power distribution unit by replacing the copper busbar 4. Therefore, it has the advantages of wide adaptability and strong scalability.

[0032] Furthermore, the housing 1 is equipped with a slider, and the charging pile body is equipped with a guide rail, with the slider and the guide rail being slidably connected. Specifically, a slider is installed on the sixth side of the housing 1, where the sixth side is arranged opposite the second side. The sliding connection between the slider and the guide rail facilitates the assembly of the power distribution unit and the charging pile body. When the power distribution unit slides to a specific position on the charging pile body, the portion of the copper busbar 4 extending from the receiving cavity 10 will mate with the copper busbar 4 of the pile body. It should be understood that the positional relationship between the first, second, third, fourth, and fifth sides can be changed according to the layout of the power distribution unit and the charging pile body. In other words, the location of the first, second, third, fourth, and fifth openings is not specifically limited by this utility model and can be adjusted according to actual circumstances. The side on which the slider is provided only needs to be different from the side on which the opening is provided. Furthermore, the first side is also equipped with a grip portion 11, which can be a handle, a bump, etc., to facilitate the user's grip of the power distribution unit.

[0033] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0034] The above is a description of the technical solution provided by the present invention. For those skilled in the art, according to the ideas of the embodiments of the present invention, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A power distribution unit for a charging pile, characterized in that: include: A shell, an auxiliary power supply, an electric meter, a PDU module and a copper busbar, wherein the shell has a receiving cavity, the PDU module is fixedly connected in the receiving cavity, the shell is provided with a first opening, a second opening and a third opening connected to the receiving cavity, the auxiliary power supply is detachably assembled in the receiving cavity and is opposite to the first opening, the electric meter is fixedly connected in the receiving cavity and is opposite to the second opening, and the copper busbar is partially located in the receiving cavity and partially protrudes from the third opening.

2. The power distribution unit according to claim 1, characterized in that: The power distribution unit also includes a first assembly plate partially located in the accommodating cavity and partially located outside the first opening, the portion of the first assembly plate located outside the first opening is detachably connected to the shell, and the auxiliary power supply is fixedly connected to the first assembly plate.

3. The power distribution unit according to claim 2, characterized in that: The auxiliary power supply is screwed to the first assembly plate; or, the auxiliary power supply is buckled to the first assembly plate.

4. The power distribution unit according to claim 2, characterized in that: The first assembly plate includes a first main body and a first connecting portion, the first main body and the first connecting portion are vertically arranged, the first main body is located in the accommodating cavity, and the auxiliary power supply is fixedly connected to the first main body; the first connecting portion is arranged outside the first opening and is detachably connected to the shell.

5. The power distribution unit according to claim 4, characterized in that: The shell includes a first side surface, the first opening is opened on the first side surface, a first interval is formed between a bottom edge of the first opening and a bottom edge of the first side surface, and the first connecting portion is detachably connected to the first interval.

6. The power distribution unit according to claim 5, characterized in that: The first connection portion is screw-connected to the first spacing portion; or the first connection portion is buckle-connected to the first spacing portion.

7. The power distribution unit according to claim 4, characterized in that: The first main body is in contact with the bottom of the receiving cavity.

8. The power distribution unit according to claim 4, characterized in that: The bottom of the auxiliary power supply is in contact with the first main body.

9. The power distribution unit according to claim 1, characterized in that: The power distribution unit further includes a monitoring module. The shell is provided with a fourth opening. The power distribution unit can be detachably assembled in the receiving cavity and is directly opposite to the fourth opening.

10. The power distribution unit according to claim 9, characterized in that: The power distribution unit further includes a second assembly plate partially located in the receiving cavity and partially located outside the fourth opening, the second assembly plate is detachably connected to the shell, and the monitoring module is fixedly connected to the second assembly plate.

11. The power distribution unit according to claim 10, characterized in that: The monitoring module is screwed to the second assembly plate; or the monitoring module is buckled to the second assembly plate.

12. The power distribution unit according to claim 10, characterized in that: The second assembly plate includes a second main body and a second connecting part, the second main body and the second connecting part are vertically arranged, the second main body is located in the accommodating cavity, and the monitoring module is fixedly connected to the second main body; the second connecting part is arranged outside the fourth opening and is detachably connected to the shell.

13. The power distribution unit according to claim 12, characterized in that: The power distribution unit also includes two second assembly plates, the shell has a second side, the fourth opening is opened on the second side, the left side of the fourth opening and the left side of the second side have a third interval, the right side of the fourth opening and the right side of the second side have a fourth interval, wherein the second main body of one of the second assembly plates is fixedly connected to the left side of the monitoring module and the second connecting part is detachably connected to the third interval, and the second main body of the other second assembly plate is fixedly connected to the right side of the monitoring module and the second connecting part is detachably connected to the third interval.

14. The power distribution unit according to claim 13, characterized in that: One of the second connecting parts is connected to the second interval screw; or, one of the second connecting parts is connected to the second interval buckle; or, another second connecting part is connected to the second interval screw; or, another second connecting part is connected to the second interval buckle.

15. The power distribution unit according to claim 1, characterized in that: The shell is provided with a plurality of heat dissipation holes; the PDU module is integrated with a heat dissipation control unit, and the heat dissipation control unit can perform forced heat dissipation control according to the heat change in the accommodating cavity.

16. The power distribution unit according to claim 15, characterized in that: The heat dissipation control unit is used to control the heat dissipation of the PDU module when it is detected that the temperature value in the receiving cavity is greater than a preset threshold.

17. The power distribution unit according to claim 1, characterized in that: The power distribution unit also includes a fan. The shell is provided with a fifth opening. The power distribution unit can be detachably assembled in the receiving cavity and is directly opposite to the fifth opening.

18. The power distribution unit according to claim 1, characterized in that: The power distribution unit further comprises a third assembly plate, the third assembly plate covers the third opening, the third assembly plate is provided with a through hole, and the copper busbar can protrude out of the receiving cavity through the through hole.

19. The power distribution unit according to claim 18, characterized in that: The power distribution unit comprises two third assembly boards, the two third assembly boards have the same or different numbers of through holes, and the copper busbars correspond to the through holes one by one.

20. The power distribution unit according to claim 1, characterized in that: The housing is provided with a slider, the charging pile body is provided with a guide rail, and the slider is slidably connected to the guide rail.

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