Copper bar assembly and power supply backboard

Abstract

The utility model relates to a copper bar assembly and a power supply backboard. The copper bar assembly comprises a first hard copper bar and a second hard copper bar which are stacked up and down, one end of the first hard copper bar extends forwards to form a first mounting lug, and the other end of the second hard copper bar extends forwards to form a second mounting lug; the insulating sheet is clamped between the first hard copper bar and the second hard copper bar; the upper ends of the first copper columns penetrate through the via holes in the second hard copper bar and the insulating sheet and are fixedly connected with the first hard copper bar; the upper ends of the second copper columns are fixedly connected with the second hard copper bar; the first soft copper bar and the second soft copper bar are oppositely arranged, the first soft copper bar is provided with a first fixing part and a first output connecting part, the first fixing part and the first mounting lug are spliced and fixed, the second soft copper bar is provided with a second fixing part and a second output connecting part, and the second fixing part and the second mounting lug are spliced and fixed. The copper bar assembly can realize large current transmission between the PCB on the power supply backboard and the output connector.

Description

Technical Field

[0001] This application relates to power distribution technology, and more specifically, to a copper busbar assembly and a power backplane. Background Technology

[0002] The power supply backplane is a power conversion component for servers, controlling current input and output, and is fundamental to the normal operation of the server. As server performance improves, the demand for high-current power from various functional components on the server increases. How to achieve the transmission of high current from the power supply backplane to the output connectors is a problem that urgently needs to be solved. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a high-current copper busbar assembly and a power supply backplane using the copper busbar assembly, in view of the above-mentioned defects of the prior art.

[0004] This application, in order to solve its technical problem, proposes a copper busbar assembly in the first aspect, comprising: a first hard copper busbar and a second hard copper busbar stacked vertically, wherein one end of the first hard copper busbar extends forward to form a first mounting ear, and the other end of the second hard copper busbar extends forward to form a second mounting ear; an insulating sheet sandwiched between the first hard copper busbar and the second hard copper busbar; and a plurality of first copper pillars supported below the first hard copper busbar, wherein the upper ends of the first copper pillars pass through the second hard copper busbar from below and through corresponding first and second through holes opened on the second hard copper busbar and the insulating sheet, and are fixedly connected to the first hard copper busbar; the assembly is supported below the first hard copper busbar. Multiple second copper pillars are located below the second hard copper busbar, with the upper ends of the second copper pillars fixedly connected to the second hard copper busbar; a first soft copper busbar and a second soft copper busbar are respectively disposed at the front ends of the first hard copper busbar and the second hard copper busbar. The first soft copper busbar has a first fixing part away from the end of the second soft copper busbar and a first output connection part near the end of the second soft copper busbar. The first fixing part is stacked and fixed with a first mounting ear. The second soft copper busbar has a second fixing part away from the end of the first soft copper busbar and a second output connection part near the end of the first soft copper busbar. The second fixing part is stacked and fixed with a second mounting ear. According to this embodiment of the application, the copper busbar assembly supports and connects the upper first hard copper busbar of the stacked first hard copper busbar and second hard copper busbar to the first output terminal on the PCB board through multiple first copper pillars, and supports and connects the lower second hard copper busbar to the second output terminal on the PCB board through multiple second copper pillars. The first output connection portion and the second output connection portion provided by the first mounting ears and the second mounting ears respectively stacked on the front opposite ends of the first hard copper busbar and the second hard copper busbar are connected to the two ends of the output connector, thereby realizing the large current transmission from the PCB board on the power backplane to the output connector. Moreover, the structure is simple and compact, the connection is reliable, and it is easy to install.

[0005] In one embodiment of the copper busbar assembly according to this application, the length of the second copper column is shorter than that of the first copper column so that the lower end of the second copper column and the lower end of the first copper column are at the same horizontal level. By making the lower ends of the second and first copper columns at the same horizontal level, the copper busbar assembly according to this embodiment of the application can be more easily soldered and fixed to the PCB board.

[0006] In one embodiment of the copper busbar assembly according to this application, both the first copper column and the second copper column include a column body, a first connecting hole is formed at the upper end of the column body, and at least one connecting crossbar protrudes downward from the lower end of the column body. The copper busbar assembly according to this embodiment facilitates connection and fixation with corresponding first and second rigid copper busbars by forming the first connecting hole at the upper end of the first and second copper columns, and facilitates soldering and fixation to the PCB board by forming the connecting crossbar at the lower end of the first and second copper columns.

[0007] In one embodiment of the copper busbar assembly described in this application, a first mounting hole is formed on the first rigid copper busbar corresponding to the first copper post. The first copper post is locked and fixed to the lower surface of the first rigid copper busbar by a first fastener passing through the first mounting hole and connecting to the first connection hole at the upper end of the first copper post. A second mounting hole is formed on the second rigid copper busbar corresponding to the second copper post. The second copper post is locked and fixed to the lower surface of the second rigid copper busbar by a second fastener passing through the second mounting hole and connecting to the first connection hole at the upper end of the second copper post. The copper busbar assembly of this embodiment of the application locks the first copper post and the second copper post to the lower surface of the first rigid copper busbar and the second copper post respectively by a first fastener, such as a screw, passing through the first mounting hole on the first rigid copper busbar and connecting to the first connection hole at the upper end of the first copper post, and by a second fastener, such as a screw, passing through the second mounting hole on the second rigid copper busbar and connecting to the first connection hole at the upper end of the second copper post. This not only facilitates installation but also ensures a stable and reliable connection.

[0008] In one embodiment of the copper busbar assembly according to this application, the first rigid copper busbar and the insulating sheet are respectively provided with a first clearance through hole and a second clearance through hole opposite to the second mounting hole to avoid the second fastener. By providing the first clearance through hole and the second clearance through hole on the first rigid copper busbar and the insulating sheet, the copper busbar assembly according to this embodiment of the application allows the first fastener to be recessed into the first clearance through hole and the second clearance through hole, minimizing the stack height of the first rigid copper busbar and the second rigid copper busbar.

[0009] In an embodiment of the busbar assembly according to the present application, the first fixing portion of the first flexible busbar is superposed and fixed on the lower surface of the first mounting ear, and the second fixing portion of the second flexible busbar is superposed and fixed on the upper surface of the second mounting ear. By superposing the first fixing portion of the first flexible busbar and the second fixing portion of the second flexible busbar on the lower surface of the first mounting ear and the upper surface of the second mounting ear respectively, the structure of the entire busbar assembly can be made more compact.

[0010] In an embodiment of the busbar assembly according to the present application, the first flexible busbar further has a first elastic deformation portion connected between the first fixing portion and the first output connection portion; the second flexible busbar further has a second elastic deformation portion connected between the second fixing portion and the second output connection portion. Through the first elastic deformation portion of the first flexible busbar and the second elastic deformation portion of the second flexible busbar in this embodiment of the present application, a certain amount of elastic deformation can be provided, so that there is a certain floating connection space when the first output connection portion and the second output connection portion are connected to the output connector, which can not only adapt to dimensional deviations but also facilitate the installation operation.

[0011] In an embodiment of the busbar assembly according to the present application, the first elastic deformation portion of the first flexible busbar has a first "U"-shaped bending structure, and the first output connection portion projects vertically forward from one end of the first "U"-shaped bending structure far from the first fixing portion; the second elastic deformation portion of the second flexible busbar has a second "U"-shaped bending structure, and the second output connection portion projects vertically forward from one end of the second "U"-shaped bending structure far from the second fixing portion. The first flexible busbar and the second flexible busbar of the busbar assembly in this embodiment of the present application respectively provide elastic deformation through the first "U"-shaped bending structure and the second "U"-shaped bending structure, so that there is a floating connection space when the first output connection portion and the second output connection portion are connected to the output connector.

[0012] In an embodiment of the busbar assembly according to the present application, the outer circumferential surfaces of the first copper column and the second copper column are covered with an insulating coating. Through this insulating coating, a better insulation effect can be achieved between the outer circumferences of the first copper column and the second copper column and the first rigid busbar and the second rigid busbar.

[0013] In an embodiment of the busbar assembly according to the present application, the outer surfaces of the first rigid busbar that do not contact the upper ends of the first copper column and the surfaces of the second rigid busbar that do not contact the upper ends of the second copper column are covered with an insulating coating. Through this insulating coating, a better insulation effect can be achieved between the first rigid busbar and the second rigid busbar.

[0014] To address its technical problem, this application proposes a power supply backplane in a second aspect, comprising a PCB board and an output connector, and further comprising the aforementioned copper busbar assembly. The lower ends of a plurality of first copper pillars of the copper busbar assembly are welded and fixed to the PCB board and electrically connected to the first output terminal of the PCB board. The lower ends of a plurality of second copper pillars of the copper busbar assembly are welded and fixed to the PCB board and electrically connected to the second output terminal of the PCB board. The first output connection portion of the first flexible copper busbar and the second output connection portion of the second flexible copper busbar of the copper busbar assembly are respectively fixedly connected to the first input connection terminal and the second input connection terminal of the output connector. According to this embodiment of the power supply backplane, the upper first hard copper busbar of the stacked first hard copper busbar and second hard copper busbar is supported and connected to the first output terminal on the PCB board by a plurality of first copper pillars, and the lower second hard copper busbar is supported and connected to the second output terminal on the PCB board by a plurality of second copper pillars. The first output connection portion and the second output connection portion provided by the first mounting ears and the second mounting ears respectively stacked on the front sides of the first hard copper busbar and the second hard copper busbar are connected to the first input connection terminal and the second input connection terminal of the output connector, thereby realizing the large current transmission from the PCB board to the output connector on the power supply backplane. Moreover, the structure is simple and compact, the connection is reliable, and it is easy to install.

[0015] The copper busbar assembly and power backplane of this application have the following advantages: The copper busbar assembly according to the embodiments of this application supports and connects the upper first hard copper busbar of the stacked first hard copper busbar and second hard copper busbar to the first output terminal on the PCB board through multiple first copper pillars, and supports and connects the lower second hard copper busbar to the second output terminal on the PCB board through multiple second copper pillars. The first output connection portion and the second output connection portion provided by the first and second flexible copper busbars respectively stacked on the front opposite ends of the first and second hard copper busbars are connected to the first input connection terminal and the second input connection terminal of the output connector, thereby realizing the large current transmission from the PCB board to the output connector on the power backplane. Moreover, the structure is simple and compact, the connection is reliable, and it is easy to install. Attached Figure Description

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the power supply backplane according to one embodiment of this application;

[0018] Figure 2 yes Figure 1 The diagram shows the structure of the copper busbar assembly.

[0019] Figure 3 Figure 2 A schematic diagram of the copper busbar assembly from another angle is shown;

[0020] Figure 4 is Figure 1 an exploded structural schematic diagram of the copper busbar assembly shown in

[0021] Figure 5 is a structural schematic diagram of the first copper column in an embodiment of the present application;

[0022] Figure 6 is Figure 5 a structural schematic diagram of the first copper column shown from another angle.

[0023] Explanation of the reference numerals in the drawings: 100 - power supply backplane; 10 - copper busbar assembly; 11 - first rigid copper busbar; 111 - first mounting hole; 112 - first fastener; 113 - first clearance through hole; 12 - second rigid copper busbar; 121 - second mounting hole; 122 - second fastener; 123 - first through hole; 13 - insulating sheet; 131 - second through hole; 132 - second clearance through hole; 14a - first copper column; 14b - second copper column; 141 - column body; 142 - first connection hole; 143 - connecting cross bar; 15 - first mounting ear; 151 - third mounting hole; 16 - second mounting ear; 161 - second connection hole; 17 - first flexible copper busbar; 171 - first elastic deformation part; 1711 - first "zigzag" bending structure; 172 - first fixing part; 173 - first output connection part; 174 - third connection hole; 175 - third fastener; 176 - fifth fastener; 18 - second flexible copper busbar; 181 - second elastic deformation part; 1811 - second "zigzag" bending structure; 182 - second fixing part; 183 - second output connection part; 184 - fourth mounting hole; 185 - fourth fastener; 186 - sixth fastener; 20 - PCB board; 30 - output connector; 31 - first input connection end; 32 - second input connection end. Detailed implementation manners

[0024] In order to make the purpose, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. And, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0025] Figure 1 shows a structural schematic diagram of a power supply backplane 100 according to an embodiment of the present application. Refer to Figure 1As shown, the power supply backplane 100 includes a PCB board 20, a copper busbar assembly 10, and an output connector 30. The copper busbar assembly 10 is connected between the PCB board 20 and the output connector 30, thereby enabling the transmission of large current from the PCB board 20 to the output connector 30 through the copper busbar assembly 10, thus solving the problem of large current transmission on the power supply backplane 100.

[0026] Figures 2 to 4 The specific structures of the copper busbar assembly 10 described above are shown. See also... Figure 2 As shown, the copper busbar assembly 10 mainly consists of a first hard copper busbar 11, a second hard copper busbar 12, an insulating sheet 13, multiple first copper pillars 14a, multiple second copper pillars 14b, a first soft copper busbar 17, and a second soft copper busbar 18. Both the first hard copper busbar 11 and the second hard copper busbar 12 are flat strips, stacked one on top of the other. One end of the upper first hard copper busbar 11 (e.g., ...) Figure 2 The right end shown extends forward to form a first mounting ear 15 for securing the first flexible copper busbar 17. The other end of the lower second rigid copper busbar 12 (as shown) Figure 2 The left end (shown) extends forward to form a second mounting ear 16 for fixing the second flexible copper busbar 18. An insulating sheet 13, made of a thin insulating material, preferably insulating paper, is sandwiched between the first rigid copper busbar 11 and the second rigid copper busbar 12. This not only achieves insulation between the first rigid copper busbar 11 and the second rigid copper busbar 12 but also reduces the stacking height of the first rigid copper busbar 11 and the second rigid copper busbar 12, making the entire copper busbar assembly 10 more compact. The upper ends of multiple first copper pillars 14a pass under the second rigid copper busbar 12, through the second rigid copper busbar 12 and the insulating sheet 13, and are fixedly connected to the first rigid copper busbar 11. The lower ends are soldered and fixed to the PCB board 20 and electrically connected to the first output terminal (e.g., the positive terminal) of the PCB board 20. The upper ends of multiple second copper pillars 14b are fixedly connected to the second rigid copper busbar 12, and the lower ends are soldered and fixed to the PCB board 20 and electrically connected to the second output terminal (e.g., the negative terminal) of the PCB board 20. Thus, the first hard copper busbar 11 and the second hard copper busbar 12 are not only supported on the PCB board 20 by multiple first copper pillars 14a and multiple second copper pillars 14b respectively, but also electrically connected to the PCB board 20 by multiple first copper pillars 14a and multiple second copper pillars 14b respectively (see...). Figure 1(As shown). The first flexible copper busbar 17 and the second flexible copper busbar 18 are disposed opposite each other at the left and right ends of the front side of the first rigid copper busbar 11 and the second rigid copper busbar 12. The first flexible copper busbar 17 has a first fixing part 172 and a first output connection part 173. The first fixing part 172 is located at the end away from the second flexible copper busbar, and the first output connection part 173 is located at the end close to the second flexible copper busbar. Similarly, the second flexible copper busbar 18 has a second fixing part 182 and a second output connection part 183. The second fixing part 182 is located at the end away from the first flexible copper busbar, and the second output connection part 183 is located at the end close to the first flexible copper busbar. The first flexible copper busbar 17 is stacked and fixed to the first mounting ear 15 through the first fixing part 172, and the second flexible copper busbar 18 is stacked and fixed to the second mounting ear 16 through the second fixing part 182, so that the first output connection part 173 of the first flexible copper busbar 17 and the second output connection part 183 of the second flexible copper busbar 18 are opposite each other for connecting the output connector 30 (see reference). Figure 1 (As shown). Furthermore, the first flexible copper busbar 17 also has a first elastic deformation portion 171 connected between the first fixing portion 172 and the first output connection portion 173, and the second flexible copper busbar 18 also has a second elastic deformation portion 181 connected between the second fixing portion 182 and the second output connection portion 183. The first elastic deformation portion 171 and the second elastic deformation portion 181 can provide a certain amount of elastic deformation, allowing the first output connection portion 173 and the second output connection portion 183 to have a certain floating connection space when connected to the output connector 30, which not only adapts to dimensional deviations but also facilitates installation and operation.

[0027] Based on the above embodiments of this application, the copper busbar assembly 10 achieves a first pole (e.g., positive pole) connection between the PCB board 20 and the output connector 30 through multiple first copper pillars 14a, a first hard copper busbar 11 and a first soft copper busbar 17, and achieves a second pole (e.g., negative pole) connection between the PCB board 20 and the output connector 30 through multiple second copper pillars 14b, a second hard copper busbar 12 and a second soft copper busbar 18, thereby realizing high current transmission from the PCB board 20 to the output connector 30.

[0028] Specifically, see Figure 5 and Figure 6As shown, the first copper pillar 14a and the second copper pillar 14b have the same structure, both including a rectangular pillar 141. A first connecting hole 142 is opened at the upper end of the pillar 141 for connection and fixation with the corresponding first hard copper busbar 11 and second hard copper busbar 12. At least one connecting crossbar 143 protrudes downwards from the lower end of the pillar 141 for soldering and fixing to the PCB board 20. The number of connecting crossbars 143 can be selected according to the required current transmission. Furthermore, to ensure that the lower ends of the second copper pillar 14b and the first copper pillar 14a are soldered to the PCB board 20 at the same horizontal height, the length of the second copper pillar 14b is designed to be shorter than that of the first copper pillar 14a; that is, the length of the second copper pillar 14b plus the thickness of the second hard copper busbar 12 and the insulating sheet 13 equals the length of the first copper pillar 14a.

[0029] See also Figure 4 As shown, a first mounting hole 111 is provided on the first hard copper busbar 11 for each first copper post 14a. A first through hole 123 and a second through hole 131 are provided on the second hard copper busbar 12 and the insulating sheet 13 for each first copper post 14a to pass through. After the upper end of the first copper post 14a passes through the first through hole 123 on the second hard copper busbar 12 and the second through hole 131 on the insulating sheet 13 from below and abuts against the first hard copper busbar 11, it is locked by the first fastener 112 passing through the first mounting hole 111 and locking it with the first connecting hole 142 at the upper end of the first copper post 14a, thus fixing the first copper post 14a to the lower surface of the first hard copper busbar 11. Similarly, a second mounting hole 121 is provided on the second hard copper busbar 12 corresponding to each second copper post 14b. The second copper post 14b is locked to the first connecting hole 142 at the upper end of the second copper post 14b by the second fastener 122 passing through the second mounting hole 121, thus fixing the second copper post 14b to the lower surface of the second hard copper busbar 12. In addition, the first hard copper busbar 11 and the insulating sheet 13 are respectively provided with a first clearance through hole 113 and a second clearance through hole 132 to avoid the second fastener 122 in the second mounting hole 121. The first fastener 122 can be recessed into the first clearance through hole 113 and the second clearance through hole 132 (see Figure 2 As shown), the stacking height of the first hard copper busbar 11 and the second hard copper busbar 12 is minimized. In a specific embodiment, the first mounting hole 111 and the second mounting hole 121 are both through holes, the first connecting hole 142 is a threaded hole, and the first fastener 112 and the second fastener 122 are both screws that are threadedly connected to the threaded hole.

[0030] See also Figure 4As shown in the figure, a plurality of third mounting holes 151 are provided in the first mounting ear 15, and a plurality of second connection holes 161 are provided in the second mounting ear 16. A plurality of third connection holes 174 are provided in the first fixing portion 172 of the first flexible copper busbar 17 corresponding to the plurality of third mounting holes 151. A plurality of third fasteners 175 pass through the third mounting holes 151 in the first mounting ear 15 and are locked with the third connection holes 174 in the first fixing portion 172, so as to stack and fix the first fixing portion 172 on the lower surface of the first mounting ear 15. A plurality of fourth mounting holes 184 are provided in the second fixing portion 182 of the second flexible copper busbar 18 corresponding to the plurality of second connection holes 161. A plurality of fourth fasteners 184 pass through the fourth mounting holes 184 in the second fixing portion 182 and are locked with the second connection holes 161 in the second mounting ear 16, so as to stack and fix the second fixing portion 182 on the upper surface of the second mounting ear 16. Since the first mounting ear 15 and the second mounting ear 16 are staggered in height, the first fixing portion 172 of the first flexible copper busbar 17 is stacked on the lower surface of the first mounting ear 15, and the second fixing portion 182 of the second flexible copper busbar 18 is stacked on the upper surface of the second mounting ear 16, which can make the structure of the entire copper busbar assembly 20 more compact. In a specific embodiment, the above-mentioned third mounting holes 151 and fourth mounting holes 184 are both through holes, the second connection holes 161 and third connection holes 174 are both threaded holes, and the third fasteners 175 and fourth fasteners 184 are both screws threadedly connected to the threaded holes.

[0031] Further referring to Figure 4 As shown in the figure, the first elastic deformation portion 171 of the first flexible copper busbar 17 has a first "Ji" - shaped bending structure 1711. The first output connection portion 173 extends vertically forward from one end of the first "Ji" - shaped bending structure 1711 away from the first fixing portion 172, and is fixedly connected to the first input connection end 31 (such as the positive extreme) of the output connector 30 through a fifth fastener 176 (such as a screw). The second elastic deformation portion 181 of the second flexible copper busbar 18 has a second "Ji" - shaped bending structure 1811. The second output connection portion 183 extends vertically forward from one end of the second "Ji" - shaped bending structure 1811 away from the second fixing portion 182, and is fixedly connected to the second input connection end 32 (such as the negative extreme) of the output connector 30 through a sixth fastener 186 (such as a screw). Both the first "Ji" - shaped bending structure 1711 and the second "Ji" - shaped bending structure 1811 can be elastically deformed, so that the first output connection portion 173 and the second output connection portion 183 have a floating connection space when connected to the first input connection end 31 and the second input connection end 32 of the output connector 30. Obviously, in different embodiments of the present application, the specific implementation forms of the first elastic deformation portion 171 and the second elastic portion 181 are not limited to the "Ji" - shaped of the illustrated embodiment, and other various shapes that can provide elastic deformation, such as a wavy shape, etc., are also applicable.

[0032] In a further embodiment of this application, to achieve better insulation, both the first copper pillar 14a and the second copper pillar 14b have an insulating coating on their outer peripheral surfaces between their upper and lower ends. The outer surfaces of the first hard copper busbar 11 that are not in contact with the upper end of the first copper pillar 14a and the second hard copper busbar 12 that are not in contact with the upper end of the second copper pillar 14b are also covered with an insulating coating. Furthermore, the insulating coating on the outer peripheral surfaces of the first copper pillar 14a and the second copper pillar 14b is preferably heat-resistant.

[0033] According to the above embodiments of this application, the copper busbar assembly 10 realizes the large current transmission from the PCB board 20 in the power backplane 100 to the output connector 30, and has a simple and compact structure, reliable connection, and is easy to install.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A copper busbar assembly (10), characterized in that, include: A first hard copper busbar (11) and a second hard copper busbar (12) are stacked on top of each other. One end of the first hard copper busbar (11) extends forward to form a first mounting ear (15), and the other end of the second hard copper busbar (12) extends forward to form a second mounting ear (16). An insulating sheet (13) is sandwiched between the first hard copper busbar (11) and the second hard copper busbar (12); Multiple first copper pillars (14a) are supported below the first hard copper busbar (11). The upper end of the first copper pillar (14a) passes through the second hard copper busbar (12) and the first through hole (123) and the second through hole (131) respectively opened on the insulating sheet (13) and is fixedly connected to the first hard copper busbar (11). Multiple second copper columns (14b) are supported below the second hard copper busbar (12), and the upper ends of the second copper columns (14b) are fixedly connected to the second hard copper busbar (12); The first soft copper busbar (17) and the second soft copper busbar (18) are disposed opposite to the front ends of the first hard copper busbar (11) and the second hard copper busbar (12). The first soft copper busbar (17) has a first fixing part (172) away from the end of the second soft copper busbar (18) and a first output connection part (173) near the end of the second soft copper busbar (18). The first fixing part (172) is stacked and fixed with the first mounting ear (15). The second soft copper busbar (18) has a second fixing part (182) away from the end of the first soft copper busbar (17) and a second output connection part (183) near the end of the first soft copper busbar (17). The second fixing part (182) is stacked and fixed with the second mounting ear (16).

2. The copper busbar assembly (10) according to claim 1, characterized in that, The second copper pillar (14b) is shorter than the first copper pillar (14a) so that the lower end of the second copper pillar (14b) and the lower end of the first copper pillar (14a) are at the same horizontal level.

3. The copper busbar assembly (10) according to claim 1, characterized in that, The first copper pillar (14a) and the second copper pillar (14b) both include a pillar body (141), the upper end of the pillar body (141) is provided with a first connecting hole (142), and the lower end of the pillar body (141) is provided with at least one connecting crossbar (143) protruding downward.

4. The copper busbar assembly (10) according to claim 3, characterized in that, A first mounting hole (111) is opened on the first hard copper busbar (11) corresponding to the first copper post (14a). The first copper post (14a) is locked and fixed to the lower surface of the first hard copper busbar (11) by passing through the first mounting hole (111) and the first connecting hole (142) at the upper end of the first copper post (14a) through the first fastener (112). A second mounting hole (121) is opened on the second hard copper busbar (12) corresponding to the second copper post (14b). The second copper post (14b) is locked and fixed to the lower surface of the second hard copper busbar (12) by passing through the second mounting hole (121) and the first connecting hole (142) at the upper end of the second copper post (14b) through the second fastener (122).

5. The copper busbar assembly (10) according to claim 4, characterized in that, The first hard copper busbar (11) and the insulating sheet (13) are respectively provided with a first clearance through hole (113) and a second clearance through hole (132) to avoid the second fastener (122) opposite to the second mounting hole (121).

6. The copper busbar assembly (10) according to claim 1, characterized in that, The first fixing portion (172) of the first flexible copper busbar (17) is overlapped and fixed to the lower surface of the first mounting ear (15), and the second fixing portion (182) of the second flexible copper busbar (18) is overlapped and fixed to the upper surface of the second mounting ear (16).

7. The copper busbar assembly (10) according to claim 1, characterized in that, The first flexible copper busbar (17) further has a first elastic deformation portion (171) connected between the first fixing portion (172) and the first output connection portion (173); the second flexible copper busbar (18) further has a second elastic deformation portion (181) connected between the second fixing portion (182) and the second output connection portion (183).

8. The copper busbar assembly (10) according to claim 7, characterized in that, The first elastic deformation portion (171) has a first "U-shaped" bending structure (1711), and the first output connection portion (173) vertically projects forward from one end of the first "U-shaped" bending structure (1711) away from the first fixing portion (172); the second elastic deformation portion (181) has a second "U-shaped" bending structure (1811), and the second output connection portion (183) vertically projects forward from one end of the second "U-shaped" bending structure (1811) away from the second fixing portion (182).

9. The copper busbar assembly (10) according to claim 1, characterized in that, The outer peripheral surfaces of the first copper column (14a) and the second copper column (14b) are covered with an insulating coating.

10. The copper busbar assembly (10) according to claim 9, characterized in that, The outer surfaces of the first rigid copper busbar (11) that do not contact the upper ends of the first copper column (14a) and the surfaces of the second rigid copper busbar (12) that do not contact the upper ends of the second copper column (14b) are covered with an insulating coating.

11. A power supply backplane (100), comprising a PCB board (20) and an output connector (30), characterized in that, It further includes a copper busbar assembly (10) as described in any one of claims 1-10. The lower ends of the multiple first copper columns (14a) of the copper busbar assembly (10) are welded and fixed to the PCB board (20) and are electrically connected to the first output end of the PCB board (20). The lower ends of the multiple second copper columns (14b) of the copper busbar assembly (10) are welded and fixed to the PCB board (20) and are electrically connected to the second output end of the PCB board (20). The first output connection portion (173) of the first flexible copper busbar (17) and the second output connection portion (183) of the second flexible copper busbar (18) of the copper busbar assembly (10) are respectively fixedly connected to the first input connection end (31) and the second input connection end (32) of the output connector (30).

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