Laminated copper bar and inverter thereof

Abstract

The utility model discloses a laminated copper bar and an inverter thereof, the laminated copper bar comprises a main body part, the main body part is provided with a matching surface, the matching surfaces of the two laminated copper bars are suitable for being arranged adjacently, the main body part is also provided with a first installation side edge and a second installation side edge, and the first installation side edge and the second installation side edge are located at the same side of the matching surface; the first terminal group protrudes and extends from the first mounting side edge, and the first terminal group is used for being connected with one of a boosting plate and a power plate; the second terminal group protrudes and extends from the second mounting side edge, and the second terminal group is used for being connected with the other one of the boosting plate and the power plate; under the condition that the boosting plate and the power plate are installed on the laminated copper bar, the boosting plate and the power plate are located on the same side of the matching face, space is saved, good expansibility is achieved, and product iteration is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, in particular to a laminated copper busbar and an inverter thereof. Background Art

[0002] As competition in the inverter industry intensifies, discrete components are increasingly used in high-power products, and their cost advantages are gradually becoming apparent. However, as the use of discrete components increases, the installation and maintenance of integrated discrete components becomes more difficult. Furthermore, when using discrete parallel solutions, traditional copper busbar or cable connections significantly impact electrical performance, reducing system reliability. Furthermore, the copper busbars between the output terminals and the main circuit are arranged side by side, resulting in low space utilization and poor scalability. Utility Model Content

[0003] One purpose of the utility model is to provide a laminated copper busbar for connecting discrete components of an inverter, so as to improve the space utilization and scalability of the inverter.

[0004] Another object of the present invention is to provide an inverter having the above-mentioned laminated copper busbar to improve system reliability.

[0005] To achieve at least one of the above purposes, the technical solution adopted by the present invention is: a laminated copper busbar, comprising: a main body, the main body having a mating surface, the mating surfaces of the two laminated copper busbars being suitable for being arranged adjacent to each other, the main body further having a first mounting side and a second mounting side, the first mounting side and the second mounting side being located on the same side of the mating surface; a first terminal group, the first terminal group protruding and extending from the first mounting side, the first terminal group being used to connect to a boost board or one of the power boards; a second terminal group, the second terminal group protruding and extending from the second mounting side, the second terminal group being used to connect to the boost board or the other of the power boards; when the boost board and the power board are installed on the laminated copper busbar, the boost board and the power board are located on the same side of the mating surface.

[0006] As a preference, the main body includes a first mounting segment and a second mounting segment in sequence, the first mounting segment extends along a first direction, the second mounting segment extends along a second direction, the side of the second mounting segment facing away from the first mounting segment is defined as a mating surface, one side boundary of the first mounting segment is defined as a first mounting side edge, and one side boundary of the second mounting segment is defined as a second mounting side edge, wherein the first direction and the second direction are set at an angle.

[0007] Preferably, the first terminal group is bent and extended from the first mounting side so that the first terminal group and the first mounting segment are arranged on different sides; or the first terminal group extends from the first mounting side along the width direction of the first mounting segment; the second terminal group is bent and extended from the second mounting side toward the side where the first mounting segment is located along the first direction, so that the second terminal group and the first mounting segment are located on the same side of the mating surface.

[0008] As a preference, the main body includes a first mounting section, a connecting section and a second mounting section in sequence, and the second mounting section and the first mounting section are located on the same side of the connecting section; the connecting section extends along the second direction, the first mounting section extends from one end of the connecting section along the first direction, and the second mounting section extends from the other end of the connecting section along the third direction, wherein the first direction, the second direction and the third direction are arranged at an angle to each other; the side surface of the connecting section facing away from the first mounting section and the second mounting section is defined as a mating surface, one side boundary of the first mounting section is defined as a first mounting side edge, and the side boundary of the second mounting section facing away from the connecting section is defined as a second mounting side edge.

[0009] As a preference, the first terminal group is bent and extended from the first mounting side so that the first terminal group and the first mounting section are arranged on different planes; or the first terminal group extends from the first mounting side along the width direction of the first mounting section; the second terminal group extends from the second mounting side along the width direction of the second mounting section.

[0010] As a preference, the first direction is perpendicular to the second direction.

[0011] Preferably, the first terminal group includes a first terminal, a second terminal and a third terminal arranged at intervals along the extension direction of the first mounting section; the second terminal group includes a fourth terminal, a fifth terminal and a sixth terminal arranged at intervals along the extension direction of the second mounting section.

[0012] As a preference, each of the first terminal to the sixth terminal has at least one mounting hole, and the mounting hole is used to be connected to a power board or a boost board.

[0013] As a preference, the laminated copper busbar includes a busbar positive copper busbar, a neutral copper busbar and a busbar negative copper busbar which are stacked in sequence, and each copper busbar includes a first protrusion, an extension and a second protrusion which are arranged in sequence, three of the extensions are stacked to form the main body, three of the first protrusions form the first terminal group, and three of the second protrusions form the second terminal group.

[0014] To achieve at least one of the above objectives, the technical solution adopted by the present invention is: an inverter, comprising: the laminated copper busbar as described above; a booster board, the booster board having a plurality of first contacts, the first contacts being used to connect to one of the first terminal group or the second terminal group, so that the booster board and the laminated copper busbar are connected and conductive; and a power board, the power board having a plurality of second contacts, the second contacts being used to connect to the other of the first terminal group or the second terminal group, so that the power board and the laminated copper busbar are connected and conductive.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The mating surfaces of the two laminated copper busbars are suitable for adjacent arrangement, and the first mounting sides and the second mounting sides of the two laminated copper busbars are arranged back to back, so that the two laminated copper busbars can be connected to a set of booster boards and power supplies respectively, which saves space and has good scalability to facilitate product iteration.

[0017] (2) By applying laminated copper busbars in string inverters, the electrical performance of the inverter and the overall reliability of the system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 3D schematic diagram of the structure of a laminated copper busbar according to some embodiments of the present application.

[0019] Figure 2 This is a schematic diagram of a laminated copper busbar applied to an inverter according to some embodiments of the present application.

[0020] Figure 3 3D schematic diagrams of the structure of laminated copper busbars according to other embodiments of the present application.

[0021] Figure 4 Schematic diagram of laminated copper busbars applied to inverters according to other embodiments of the present application.

[0022] Figure 5 3D schematic diagrams of the structure of laminated copper busbars according to other embodiments of the present application.

[0023] Figure 6 Schematic diagram of laminated copper busbars applied to inverters according to other embodiments of the present application.

[0024] Figure 7 3D schematic diagrams of the structure of laminated copper busbars according to other embodiments of the present application.

[0025] Figure 8 Schematic diagram of laminated copper busbars applied to inverters according to other embodiments of the present application.

[0026] In the figure: 1. Laminated copper busbar; 10. Main body; 11. Mating surface; 12. First mounting section; 121. First mounting side; 13. Second mounting section; 131. Second mounting side; 14. Connecting section; 15. Mounting hole; 20. First terminal group; 21. First terminal; 22. Second terminal; 23. Third terminal; 30. Second terminal group; 31. Fourth terminal; 32. Fifth terminal; 33. Sixth terminal; 2. Inverter; 40. Boost board; 50. Power board. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0031] A laminated copper bus 1, such as Figures 1-8As shown, the main body 10 includes a first terminal group 20 and a second terminal group 30. The main body 10 has a mating surface 11. The mating surfaces 11 of the two laminated copper busbars 1 are suitable for being arranged adjacent to each other. The main body 10 also has a first mounting side 121 and a second mounting side 131. The first mounting side 121 and the second mounting side 131 are located on the same side of the mating surface 11. The first terminal group 20 protrudes and extends from the first mounting side 121. The first terminal group 20 is used to connect to the boost board 40 or one of the power boards 50. The second terminal group 30 protrudes and extends from the second mounting side 131. The second terminal group 30 is used to connect to the boost board 40 or the other of the power boards 50. When the boost board 40 and the power board 50 are mounted on the laminated copper busbar 1, the boost board 40 and the power board 50 are located on the same side of the mating surface 11.

[0032] That is to say, the mating surfaces 11 of the two laminated copper busbars 1 are suitable for being arranged adjacent to each other, and the first mounting sides 121 of the two laminated copper busbars 1 are arranged back to back and the second mounting sides 131 are arranged back to back, so that the two laminated copper busbars 1 can be respectively connected to a group of boosting boards 40 and power boards 50, which not only saves space but also has good scalability to facilitate product iteration.

[0033] In some embodiments, as Figures 1-4 As shown, the main body 10 includes a first mounting section 12 and a second mounting section 13 in sequence. The first mounting section 12 extends along a first direction, and the second mounting section 13 extends along a second direction. The side of the second mounting section 13 facing away from the first mounting section 12 is defined as a mating surface 11. A side boundary of the first mounting section 12 is defined as a first mounting side edge 121, and a side boundary of the second mounting section 13 is defined as a second mounting side edge 131. The first direction and the second direction are arranged at an angle. Preferably, the first direction is perpendicular to the second direction, so that the first mounting section 12 and the second mounting section 13 are parallel to the sides of the rectangular boost plate 40 and the rectangular power plate 50.

[0034] That is, the mating surfaces 11 on the second mounting sections 13 of the two adjacent laminated copper busbars 1 are suitable for being arranged adjacent to each other, and the first mounting sections 12 of the two laminated copper busbars 1 extend in directions away from each other, so that the two laminated copper busbars 1 can be connected to a group of booster boards 40 and power boards 50 respectively.

[0035] In some embodiments, as Figures 1-4 As shown, the first terminal group 20 is bent and extended from the first mounting side 121 so that the first terminal group 20 and the first mounting section 12 are arranged on different surfaces; or the first terminal group 20 extends from the first mounting side 121 along the width direction of the first mounting section 12; the second terminal group 30 is bent and extended from the second mounting side 131 toward the side where the first mounting section 12 is located along the first direction, so that the second terminal group 30 and the first mounting section 12 are located on the same side of the mating surface 11.

[0036] In a specific embodiment, Figure 1 and Figure 2 As shown, the first terminal group 20 extends along the width direction of the first mounting section 12 and is connected and conducted with the boost plate 40, so that the boost plate 40 is arranged parallel to the first mounting section 12, and the second terminal group 30 is bent along the first direction toward the side where the first mounting section 12 is located, and is connected and conducted with the power plate 50, so that the power plate 50 is located between the first mounting section 12 and the second mounting section 13, and the boost plate 40 and the power plate 50 are arranged perpendicular to each other to make the arrangement more compact.

[0037] In another specific embodiment, Figure 3 and Figure 4 As shown, the first terminal group 20 is bent from the first mounting side 121 toward the side away from the second mounting section 13, so that the first terminal group 20 and the first mounting side 121 are arranged perpendicular to each other, and the first terminal group 20 is connected and conducted with the boost plate 40, so that the boost plate 40 is arranged perpendicular to the first mounting section 12, and the second terminal group 30 is bent along the first direction toward the side where the first mounting section 12 is located, and is connected and conducted with the power plate 50, so that the power plate 50 is located between the first mounting section 12 and the second mounting section 13, and the boost plate 40 and the power plate 50 are arranged in parallel, which is beneficial to reducing the size of the box of the inverter 2 in the direction perpendicular to the thickness of the boost plate 40.

[0038] In some embodiments, as Figure 5-Figure 8 As shown, the main body 10 includes a first mounting segment 12, a connecting segment 14 and a second mounting segment 13 in sequence, and the second mounting segment 13 and the first mounting segment 12 are located on the same side of the connecting segment 14; the connecting segment 14 extends along the second direction, the first mounting segment 12 extends from one end of the connecting segment 14 along the first direction, and the second mounting segment 13 extends from the other end of the connecting segment 14 along the third direction, wherein the first direction, the second direction and the third direction are arranged at an angle to each other; the side of the connecting segment 14 facing away from the first mounting segment 12 and the second mounting segment 13 is defined as the mating surface 11, the side boundary of the first mounting segment 12 is defined as the first mounting side edge 121, and the side boundary of the second mounting segment 13 facing away from the connecting segment 14 is defined as the second mounting side edge 131.

[0039] Preferably, the first and second directions are perpendicular to each other, and the third direction is perpendicular to the first direction. The third direction and the second direction are arranged at an angle, so that the first mounting section 12, the connecting section 14, and the second mounting section 13 are parallel to the sides of the rectangular boost plate 40 and the rectangular power plate 50. It will be appreciated that by adjusting the angle between the third direction and the second direction, the boost plate 40 and the power plate 50 can be arranged at different angles to accommodate different spatial layouts, making the installation of the boost plate 40 and the power plate 50 more flexible.

[0040] That is, the mating surfaces 11 on the connecting sections 14 of two adjacent laminated copper busbars 1 are suitable for being arranged adjacent to each other, and the first mounting sections 12 of the two laminated copper busbars 1 extend in directions away from each other, and the second mounting sections 13 of the two laminated copper busbars 1 are arranged adjacent to each other and extend in parallel along the third direction, thereby enabling the two laminated copper busbars 1 to be connected to a group of booster boards 40 and power boards 50 respectively.

[0041] In some embodiments, the first terminal group 20 is bent and extended from the first mounting side 121 so that the first terminal group 20 and the first mounting section 12 are arranged on different planes; or the first terminal group 20 extends from the first mounting side 121 along the width direction of the first mounting section 12; the second terminal group 30 extends from the second mounting side 131 along the width direction of the second mounting section 13.

[0042] It can be understood that by changing the angle between the first terminal group 20 and the first mounting section 12, the boost plate 40 or the power plate 50 connected to the first terminal group 20 can be arranged perpendicular to the first mounting section 12 or parallel to the first mounting section 12, so that the installation of the boost plate 40 and the power plate 50 is more flexible to adapt to different spatial layout requirements.

[0043] In a specific embodiment, Figure 5 and Figure 6 As shown, the first direction, the second direction and the third direction are perpendicular to each other. Furthermore, the first terminal group 20 extends along the width direction of the first mounting section 12, and the first terminal group 20 is connected and conducted with the boost plate 40, so that the boost plate 40 is arranged parallel to the first mounting section 12. The second terminal group 30 extends along the width direction of the second mounting section 13, and is connected and conducted with the power plate 50, so that the boost plate 40 and the power plate 50 are arranged in parallel with each other along the second direction, so that the arrangement is more compact, which is conducive to reducing the size of the inverter 2 box.

[0044] In another specific embodiment, Figure 7 and Figure 8 As shown, the first direction and the second direction are perpendicular to each other, the third direction is perpendicular to the first direction, and the third direction forms an obtuse angle with the second direction. Furthermore, the first terminal group 20 extends along the width direction of the first mounting section 12, and the first terminal group 20 is connected and conductive with the boost plate 40, so that the boost plate 40 is arranged parallel to the first mounting section 12, and the second terminal group 30 extends along the width direction of the second mounting section 13, and is connected and conductive with the power plate 50, so that the boost plate 40 and the power plate 50 are arranged at intervals along the second direction, and the boost plate 40 and the power plate 50 are arranged at an angle to each other to adapt to the spatial layout in different inverter 2 boxes.

[0045] It is worth mentioning that Figure 2 、 Figure 4 、 Figure 6 and Figure 8 As shown, a laminated copper busbar 1 is provided on opposite sides of the same set of booster boards 40 and power boards 50. That is, the same set of booster boards 40 and power boards 50 are clamped between two laminated copper busbars 1, thereby connecting and conducting the booster boards 40 and power boards 50 through the two laminated copper busbars 1. It can be understood that the physical layout of the laminated copper busbars 1 allows the power boards 50 and booster boards 40 to be centrally placed. At the same time, the laminated copper busbars 1 help reduce ripple on the DC side, thereby improving the reliability of the inverter 2 system. Furthermore, the opposite sides of the booster boards 40 and power boards 50 are fixedly connected by the laminated copper busbars 1, which helps improve structural reliability.

[0046] Furthermore, the mating surfaces 11 of the laminated copper busbars 1 on the adjacent two side edges of two adjacent groups of boost boards 40 and power boards 50 are arranged relative to each other, so that the distance between the two adjacent laminated copper busbars 1 can be reduced while avoiding interference between the two adjacent laminated copper busbars 1, which is conducive to making the layout between the two groups of boost boards 40 and power boards 50 more compact to improve space utilization, and is conducive to realizing the parallel connection of multiple groups of boost boards 40 and power boards 50 to improve the scalability of the inverter 2.

[0047] In some embodiments, as Figure 1 、 Figure 3 、 Figure 5 and Figure 7 As shown, the first terminal group 20 includes a first terminal 21, a second terminal 22, and a third terminal 23 spaced apart along the extension direction of the first mounting section 12. The second terminal group 30 includes a fourth terminal 31, a fifth terminal 32, and a sixth terminal 33 spaced apart along the extension direction of the second mounting section 13. Specifically, the first terminal 21 is electrically connected to the fourth terminal 31, the second terminal 22 is electrically connected to the fifth terminal 32, and the third terminal 23 is electrically connected to the sixth terminal 33. Thus, the positive electrode, negative electrode, and ground of the boost board 40 and the power board 50 are connected and conducted through the first terminal group 20 and the second terminal group 30, respectively.

[0048] In some embodiments, the laminated copper busbar 1 includes a busbar positive copper busbar, a neutral copper busbar, and a busbar negative copper busbar stacked in sequence, each copper busbar includes a first protrusion, an extension portion, and a second protrusion arranged in sequence, the three extension portions are stacked to form a main body 10, the three first protrusions form a first terminal group 20, and the three second protrusions form a second terminal group 30.

[0049] Specifically, the busbar positive copper bar, the neutral copper bar and the busbar negative copper bar are respectively sandwiched between two insulating plates, which is beneficial to avoid short circuit of the laminated copper bar 1, and the busbar positive copper bar, the neutral copper bar and the busbar negative copper bar are all plastic-sealed, which improves the reliability of the laminated copper bar 1, and thus helps to improve the system reliability of the inverter 2.

[0050] In some embodiments, as Figure 1 、 Figure 3 、 Figure 5 and Figure 7 As shown, the first terminal 21 to the sixth terminal 33 each have at least one mounting hole 15 , and the mounting hole 15 is used to connect to the power board 50 or the boost board 40 .

[0051] An inverter 2, such as Figure 2 、 Figure 4 、 Figure 6 and Figure 8 As shown, it includes: the above-mentioned laminated copper busbar 1, the boost plate 40 and the power plate 50. The boost plate 40 has a plurality of first contacts, and the first contacts are used to connect to one of the first terminal group 20 or the second terminal group 30, so that the boost plate 40 and the laminated copper busbar 1 are connected and conductive. The power plate 50 has a plurality of second contacts, and the second contacts are used to connect to the other of the first terminal group 20 or the second terminal group 30, so that the power plate 50 and the laminated copper busbar 1 are connected and conductive. Specifically, the contacts on the boost plate 40 and the power plate 50 are provided with threaded holes, and the screws pass through the mounting holes 15 on the terminals and are fastened to the threaded holes of the contacts, so that the laminated copper busbar 1 is fixedly installed between the boost plate 40 and the power plate 50, and conductively connects the boost plate 40 and the power plate 50.

[0052] The above describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and description merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A laminated copper busbar, characterized in that: include: A main body, the main body having a mating surface, the mating surfaces of the two laminated copper busbars being adapted to be disposed adjacent to each other, the main body further having a first mounting side and a second mounting side, the first mounting side and the second mounting side being located on the same side of the mating surface; a first terminal group, the first terminal group protruding and extending from the first mounting side, the first terminal group being used to connect to a boost board or a power board; a second terminal group, the second terminal group protruding and extending from the second mounting side, the second terminal group being used to connect to the boost board or the other of the power boards; When the boost board and the power board are mounted on the laminated copper busbar, the boost board and the power board are located on the same side of the mating surface.

2. The laminated copper busbar according to claim 1, characterized in that: The main body includes a first mounting segment and a second mounting segment in sequence, the first mounting segment extends along a first direction, the second mounting segment extends along a second direction, the side of the second mounting segment facing away from the first mounting segment is defined as a mating surface, one side boundary of the first mounting segment is defined as a first mounting side edge, and one side boundary of the second mounting segment is defined as a second mounting side edge, wherein the first direction and the second direction are set at an angle.

3. The laminated copper busbar according to claim 2, characterized in that: The first terminal group is bent and extended from the first mounting side so that the first terminal group and the first mounting section are arranged on different planes; or the first terminal group is extended from the first mounting side along the width direction of the first mounting section; The second terminal group bends and extends from the second installation side toward the side where the first installation segment is located along a first direction, so that the second terminal group and the first installation segment are located on the same side of the mating surface.

4. The laminated copper busbar according to claim 1, characterized in that: The main body includes a first mounting section, a connecting section, and a second mounting section in sequence, wherein the second mounting section and the first mounting section are located on the same side of the connecting section; the connecting section extends along a second direction, the first mounting section extends from one end of the connecting section along the first direction, and the second mounting section extends from the other end of the connecting section along a third direction, wherein the first direction, the second direction, and the third direction are arranged at an angle to each other; The side of the connecting section facing away from the first mounting section and the second mounting section is defined as a mating surface, one side boundary of the first mounting section is defined as a first mounting side edge, and the side boundary of the second mounting section facing away from the connecting section is defined as a second mounting side edge.

5. The laminated copper busbar according to claim 4, characterized in that: The first terminal group is bent and extended from the first mounting side so that the first terminal group and the first mounting section are arranged on different planes; or the first terminal group is extended from the first mounting side along the width direction of the first mounting section; The second terminal group extends from the second mounting side along a width direction of the second mounting section.

6. The laminated copper busbar according to any one of claims 2 to 5, characterized in that: The first direction is perpendicular to the second direction.

7. The laminated copper busbar according to any one of claims 1 to 5, characterized in that: The first terminal group includes a first terminal, a second terminal and a third terminal arranged at intervals along the extension direction of the first installation section; the second terminal group includes a fourth terminal, a fifth terminal and a sixth terminal arranged at intervals along the extension direction of the second installation section.

8. The laminated copper busbar according to claim 7, characterized in that: The first terminal to the sixth terminal respectively have at least one mounting hole, and the mounting hole is used to be connected to a power board or a boost board.

9. The laminated copper busbar according to claim 7, characterized in that: The laminated copper busbar includes a busbar positive copper busbar, a neutral copper busbar and a busbar negative copper busbar which are stacked in sequence. Each copper busbar includes a first protrusion, an extension portion and a second protrusion which are arranged in sequence. The three extension portions are stacked to form the main body. The three first protrusions form the first terminal group. The three second protrusions form the second terminal group.

10. An inverter, characterized in that: include: The laminated copper busbar according to any one of claims 1 to 9; A booster board, wherein the booster board has a plurality of first contacts, wherein the first contacts are used to connect to one of the first terminal group or the second terminal group, so as to connect the booster board and the laminated copper busbar; A power board is provided with a plurality of second contacts, wherein the second contacts are used to connect to the other of the first terminal group or the second terminal group, so that the power board and the laminated copper busbar are connected and conductive.

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