Busbar subassembly and electrical assembly

Abstract

Provided are a busbar subassembly for connecting a first circuit board and a second circuit board and an electrical assembly. The busbar subassembly (4A, 4B, 5A, 5B) comprises a first busbar (41) electrically connected to the first circuit board (1), a second busbar (42) electrically connected to the second circuit board (2), and a first connector (43) electrically connected to the first busbar (41) and the second busbar (42), respectively. The busbar subassembly can electrically connect two circuit boards together, occupies a small space, and is convenient to install and maintain. In addition, different circuit board spacings can be adapted by changing the size specifications of the busbar subassembly.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to a busbar subassembly, in particular to a busbar subassembly for data center orthogonal and multi-layer circuit board and an electrical assembly comprising the busbar subassembly. BACKGROUND

[0002] At present, the combination scheme of connectors and wires or the combination scheme of connectors and connectors is mostly used for transmission of large DC current between printed circuit boards (PCB) in the prior art. However, the combination scheme of connectors and wires is affected by the bending radius of the wires, has certain requirements for space, and has a relatively large volume, so it is easy to block the air duct, and it is more troublesome for customers to operate on site. In addition, the combination scheme of connectors and connectors has higher requirements for the positioning of PCB in the system, and in addition, the relative vibration between PCBs or the cumulative tolerance of the system is easy to cause the connectors to not be well matched. In addition, the connectors are easy to be too close to the edge on the PCB, which is not conducive to circuit layout. SUMMARY

[0003] One object of the present disclosure aims to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to an exemplary embodiment of one aspect of the present disclosure, a busbar subassembly for connecting a first circuit board and a second circuit board is provided, the busbar subassembly comprising: a first busbar electrically connected to the first circuit board; a second busbar electrically connected to the second circuit board; and a first connector electrically connected to the first busbar and the second busbar, respectively.

[0005] According to the busbar subassembly of an exemplary embodiment of the present disclosure, the second circuit board is parallel to the first circuit board.

[0006] According to the busbar subassembly of an exemplary embodiment of the present disclosure, the first busbar has a U-shaped structure and comprises two side walls and a bottom wall connected to the two side walls, respectively, the first connector is detachably electrically connected to the bottom wall, and the two side walls are detachably electrically connected to the first circuit board, respectively.

[0007] According to the busbar subassembly of an exemplary embodiment of the present disclosure, the free end of the side wall is provided with a connecting portion for screwing with the first circuit board.

[0008] According to an exemplary embodiment of the present disclosure, the busbar subassembly of the first connector forms a first slot configured to at least partially receive the second busbar and to be in sliding electrical contact with the second busbar in a direction perpendicular to the first circuit board.

[0009] According to an exemplary embodiment of the present disclosure, the second busbar has an L-shaped structure and includes a first arm and a second arm, the first arm being detachably electrically connected to the second circuit board, and the second arm being perpendicular to the first arm and configured to be inserted into the first slot to be in sliding electrical contact with the first slot.

[0010] According to an exemplary embodiment of another aspect of the present disclosure, there is provided an electrical assembly including a first circuit board, at least one second circuit board, and at least one first busbar subassembly electrically connected to the first circuit board and the second circuit board, respectively, the first busbar subassembly including a first busbar electrically connected to the first circuit board, a second busbar electrically connected to the second circuit board, and a first connector electrically connected to the first busbar and the second busbar, respectively.

[0011] According to an exemplary embodiment of the present disclosure, the second circuit board is parallel to the first circuit board.

[0012] According to an exemplary embodiment of the present disclosure, the number of the first busbar subassemblies is two, and the two first busbar subassemblies are used as a first positive busbar subassembly and a first negative busbar subassembly, respectively.

[0013] According to an exemplary embodiment of the present disclosure, the first busbar has a U-shaped structure and includes two side walls and a bottom wall connected to the two side walls, respectively, the first connector being detachably electrically connected to the bottom wall, and the two side walls being detachably electrically connected to the first circuit board, respectively.

[0014] According to an exemplary embodiment of the present disclosure, a free end of the side wall is provided with a connecting portion for being screwed to the first circuit board.

[0015] According to an exemplary embodiment of the present disclosure, the first connector forms a first slot configured to at least partially receive the second busbar and to be in sliding electrical contact with the second busbar in a direction perpendicular to the first circuit board.

[0016] According to an exemplary embodiment of the present disclosure, the second bus bar is in an L-shaped structure and includes a first arm and a second arm, the first arm is detachably electrically connected with the second circuit board, and the second arm is perpendicular to the first arm and is configured to be inserted into the first slot to be in sliding electrical contact with the first slot.

[0017] According to an exemplary embodiment of the present disclosure, the contact area of the first circuit board with the first bus bar is provided with a tin plating layer, and / or the contact area of the second circuit board with the second bus bar is provided with a tin plating layer.

[0018] According to an exemplary embodiment of the present disclosure, the electrical assembly further includes a plurality of third circuit boards and at least one second bus bar subassembly, the second bus bar subassembly is electrically connected with the first circuit board and the third circuit board respectively, the second bus bar subassembly includes a third bus bar extending parallel to the first circuit board, a first end of the third bus bar is detachably electrically connected with the first circuit board, and a plurality of second connectors, each of the third circuit boards is electrically connected with a second end of the third bus bar opposite to the first end via one of the second connectors.

[0019] According to an exemplary embodiment of the present disclosure, the number of the second bus bar subassembly is two, and the two second bus bar subassemblies are used as a second positive bus bar subassembly and a second negative bus bar subassembly respectively.

[0020] According to an exemplary embodiment of the present disclosure, the second connector is formed with a second slot, and the second end of the third bus bar is configured to be inserted into the second slot and in sliding electrical contact with the second slot.

[0021] According to an exemplary embodiment of the present disclosure, the third bus bar is in a Z-shaped structure and includes a first portion close to the third circuit board and parallel to the first circuit board, a third portion detachably connected with the first circuit board, and a third portion connected between the first portion and the second portion, the first portion is configured to be inserted into the second slot and in sliding electrical contact with the second slot.

[0022] According to an exemplary embodiment of the present disclosure, the contact area of the first circuit board with the third bus bar is provided with a tin plating layer.

[0023] According to the bus bar subassembly and the electrical assembly according to the various embodiments of the present disclosure described above, the bus bar subassembly is used to electrically connect two circuit boards together to reduce the occupied space, and is convenient to install and maintain, and has low positioning requirements. In addition, different circuit board spacings can be adapted by changing the size specifications of the bus bar subassembly. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view showing an electrical assembly according to an exemplary embodiment of the present disclosure;

[0025] Figure 2 is an enlarged view of A portion of Figure 1

[0026] Figure 3 shows another perspective view of the electrical assembly shown in Figure 1

[0027] Figure 4 is a side view showing an electrical assembly according to an exemplary embodiment of the present disclosure;

[0028] Figure 5 is a structural view showing an electrical assembly according to an exemplary embodiment of the present disclosure; and

[0029] Figure 6 is another structural view showing an electrical assembly according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] While the present disclosure will be described in sufficient detail with reference to the drawings to enable those skilled in the art to make and use it, before such description, it is to be understood that various alternatives, modifications, and equivalents can be used in practicing the present disclosure, and that the disclosure is not limited to the specific embodiments described herein. For the purposes of explanation and illustration, specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It will be appreciated by those skilled in the art that the various embodiments can be practiced without specific details which are set forth in order to provide a thorough understanding of the present disclosure. In other instances, well-known structures and devices are shown in diagram form in order to avoid obscuring the present disclosure.

[0031] Additionally, in the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, it will be apparent to one skilled in the art that one or more embodiments of the present disclosure can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the present disclosure.

[0032] ​​According to the general inventive concept of this disclosure, a busbar assembly is provided for connecting a first circuit board and a second circuit board. The busbar assembly includes: a first busbar electrically connected to the first circuit board; a second busbar electrically connected to the second circuit board; and a first connector electrically connected to both the first busbar and the second busbar.

[0033] According to another general inventive concept of this disclosure, an electrical component is provided, comprising: a first circuit board; at least one second circuit board; and at least one first busbar assembly, the first busbar assembly being electrically connected to both the first circuit board and the second circuit board. The first busbar assembly includes: a first busbar electrically connected to the first circuit board; a second busbar electrically connected to the second circuit board; and a first connector electrically connected to both the first busbar and the second busbar.

[0034] Figure 1 This is a perspective schematic diagram showing an electrical component according to an exemplary embodiment of the present disclosure; Figure 2 It is shown Figure 1 An enlarged view of part A; Figure 3 Show Figure 1 Another three-dimensional schematic diagram of the electrical components shown; Figure 4 This is a side view showing an electrical component according to an exemplary embodiment of the present disclosure; Figure 5 This is a schematic diagram illustrating the structure of an electrical component according to an exemplary embodiment of the present disclosure; and Figure 6 This is another structural schematic diagram illustrating an electrical component according to an exemplary embodiment of the present disclosure.

[0035] like Figures 1 to 6 As shown, the electrical component according to an exemplary embodiment of this disclosure includes a first circuit board 1, a second circuit board 2, and at least one first busbar assembly 4A, 4B. The first busbar assemblies 4A, 4B are electrically connected to the first circuit board 1 and the second circuit board 2, respectively, to transmit the DC current from the first circuit board 1 to the second circuit board 2. These first busbar assemblies 4A, 4B can electrically connect the two circuit boards 1, 2 together, reducing space requirements and facilitating assembly and maintenance, while also minimizing positioning requirements. Furthermore, the dimensions of the busbar assemblies 4A, 4B can be changed to accommodate different circuit board spacings.

[0036] In one exemplary embodiment, such as Figures 1 to 6As shown, the second circuit board 2 is parallel to the first circuit board 1. However, in some other embodiments of this disclosure, the second circuit board 2 may also be at an angle to the first circuit board 1.

[0037] In one exemplary embodiment, such as Figures 1 to 6 As shown, there are two first busbar assemblies 4A and 4B. These two first busbar assemblies 4A and 4B serve as the first positive busbar assembly 4A and the first negative busbar assembly 4B, respectively, to transmit the positive and negative DC currents of the first circuit board 1 to the second circuit board 2. Each first busbar assembly 4A and 4B includes a first busbar 41, a second busbar 42, and a first connector 43. The first busbar 41 is electrically connected to the first circuit board 1. The second busbar 42 is electrically connected to the second circuit board 2. The first connector 43 is electrically connected to both the first busbar 41 and the second busbar 42.

[0038] In one exemplary embodiment, such as Figures 1 to 6 As shown, the first busbar 41 has a U-shaped structure, which includes two side walls and a bottom wall connected to the two side walls respectively. The first connector 43 is detachably electrically connected to the bottom wall (e.g., by bolt connection), and the two side walls are detachably electrically connected to the first circuit board 1 respectively.

[0039] In one exemplary embodiment, such as Figures 1 to 6 As shown, the free end of the sidewall is provided with a connecting portion 41a for screwing into the first circuit board 1. Specifically, the connecting portion 41a is provided with a through hole for a bolt to pass through and screw into the first circuit board 1.

[0040] In one exemplary embodiment, such as Figures 1 to 6 As shown, the first connector 43 has a first slot 43a configured to at least partially receive the second busbar 42 and make slidable electrical contact with the second busbar 42 in a direction perpendicular to the first circuit board 1. This allows for the accommodation of the accumulated tolerances of the electrical component in the direction parallel to the first circuit board 1 by adjusting the size of the portion of the second busbar 42 inserted into the first slot 43a in the direction parallel to the first circuit board 1, and enables hot-swapping and more convenient on-site maintenance of the second circuit board at the customer site. Furthermore, the accumulated tolerances of the electrical component in the direction perpendicular to the first circuit board 1 can be accommodated by sliding the first slot 43a along the second busbar 42 in the direction perpendicular to the first circuit board 1, and can be adapted to different spacings between the first circuit board 1 and the second circuit board 2. Moreover, the connection via the insertion of the second busbar 42 into the first connector 43 enables rapid on-site assembly and repair / replacement.

[0041] In one exemplary embodiment, such as Figures 1 to 6As shown, the second bus bar 42 has an L-shaped structure and includes a first arm and a second arm, the first arm is detachably electrically connected (e.g. bolted) with the second circuit board 2, and the second arm is perpendicular to the first arm and is configured to be inserted into the first slot 43a and electrically contacted with the first slot 43a.

[0042] In an exemplary embodiment, as shown in Figures 1 to 6 The contact areas of the first circuit board 1 and the first bus bar 41 are provided with a tin plating layer, and the contact areas of the second circuit board 2 and the second bus bar 42 are provided with a tin plating layer, so that the layout and manufacturing cost of the circuit board can be greatly simplified while meeting the application requirements.

[0043] In an exemplary embodiment, as shown in Figures 1 to 6 As shown, the electrical assembly further includes 8 third circuit boards 3 perpendicular to the first circuit board 1, in which case, the electrical assembly further includes at least one second bus bar sub-assembly 5A, 5B, and the second bus bar sub-assembly 5A, 5B is electrically connected with the first circuit board 1 and the third circuit board 3 respectively to shunt the DC of the first circuit board 1 to the third circuit board 3. Each second bus bar sub-assembly 5 includes one third bus bar 51A (51B) and a plurality of second connectors 52A (52B). The third bus bar 51A, 51B extends parallel to the first circuit board 1, and the first end of the third bus bar 51A, 51B is detachably electrically connected with the first circuit board 1. Each third circuit board 3 is electrically connected with the second end of the third bus bar 51A (51B) opposite to the first end via one second connector 52A (52B).

[0044] In an exemplary embodiment, as shown in Figures 1 to 6 As shown, the second connector 52A, 52B is formed with a second slot 52a configured to receive the second end of the third bus bar 51A, 51B and electrically contacted with the third bus bar 51A, 51B. In this way, the cumulative tolerance of the electrical assembly in the direction parallel to the first circuit board 1 can be accommodated by adjusting the size of the part of the third bus bar 51A, 51B inserted into the second slot 52a in the direction parallel to the first circuit board 1, and the third circuit boards can be hot-plugged and more convenient on-site maintenance at the customer site. In addition, by sliding the second connector 52A, 52B on the third bus bar 51A, 51B, the spacing between the third circuit boards 3 can be adjusted to avoid assembly problems caused by the cumulative tolerance of multiple third circuit boards 3 being used at the same time.

[0045] In an exemplary embodiment, as shown in Figures 1 to 6As shown, the third bus bar 51A, 51B is in a substantially Z-shaped structure, and includes a first portion close to the third circuit board 3 and parallel to the first circuit board 1, a third portion detachably connected with the first circuit board 1, and a third portion connected between the first portion and the second portion, the first portion is configured to be inserted into the second slot 52a and in slidable electrical contact with the second slot 52a.

[0046] In an exemplary embodiment, as shown in Figures 1 to 5 As shown, the number of the second bus bar subassembly 5A, 5B is two, and the two second bus bar subassemblies 5A, 5B are respectively used as the second positive bus bar subassembly 5A and the second negative bus bar subassembly 5B to transmit the positive and negative DC current of the first circuit board 1 to the third circuit board 3.

[0047] In an exemplary embodiment, as shown in Figures 1 to 6 Figures 1 to 5 As shown, the third bus bar 51A, 51B is screwed with the first circuit board 1 by bolts, and the contact area of the first circuit board 1 with the third bus bar 51A, 51B has a tin plating layer, so that the layout and manufacturing cost of the circuit board can be greatly simplified under the condition of meeting the application requirements.

[0048] It should be noted that in some other embodiments of the present disclosure, only the second circuit board 2 or the third circuit board 3 can be included, and in addition, the number of the third circuit board 3 can not be limited to 8 as shown in the figure, for example, it can be 1, 2, 3, etc., that is, the specific number and layout of the second circuit board 2 and the third circuit board 3 can be designed according to specific circumstances.

[0049] According to another aspect of the present disclosure, a first bus bar subassembly 4A, 4B as described above is also provided.

[0050] According to the bus bar subassembly and the electrical assembly of the various embodiments of the present disclosure, the two circuit boards are electrically connected together by the bus bar subassembly to reduce the occupied space, and the installation and maintenance are convenient, and the positioning requirement is low, and the heat dissipation is good. In addition, the electrical assembly has good size compatibility, and can contain the cumulative tolerance of processing or assembly. In addition, the electrical assembly can be adapted to different circuit board spacings by changing the size specifications of the bus bar subassembly.

[0051] Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can make improvements, and the structures described in various embodiments can be freely combined without structural or principle conflicts.

[0052] Those skilled in the art will readily understand that the preferred embodiments of the present disclosure can be varied, and that the foregoing detailed description is intended to cover all such variations and changes as are included within the spirit and scope of the claims.

Claims

1. A busbar sub-assembly (4A, 4B) for connecting a first circuit board (1) and a second circuit board (2), the busbar sub-assembly (4A, 4B) comprising: a first busbar (41) electrically connected with the first circuit board (1); a second busbar (42) electrically connected with the second circuit board (2); and a first connector (43) electrically connected with the first busbar (41) and the second busbar (42) respectively, wherein the first connector (43) is formed with a first slot (43a) configured to at least partially receive the second busbar (42) and to electrically contact the second busbar (42) slidingly in a direction perpendicular to the first circuit board (1), wherein the first busbar (41) has a U-shaped structure comprising two side walls and a bottom wall connected with the two side walls respectively, the first connector (43) is detachably electrically connected with the bottom wall, and the first slot (43a) is located on a side of the first connector (43) away from the bottom wall in a plane parallel to the first circuit board. The second circuit board (2) is parallel to the first circuit board (1).

2. The busbar subassembly of claim 1, wherein, The two side walls are detachably electrically connected with the first circuit board (1) respectively.

3. The busbar subassembly of claim 2, wherein, Free ends of the side walls are provided with connecting portions (41a) for screwing with the first circuit board (1).

4. The busbar subassembly of claim 3, wherein, The second busbar (42) has an L-shaped structure comprising a first arm and a second arm, the first arm is detachably electrically connected with the second circuit board (2), and the second arm is perpendicular to the first arm and is configured to be inserted into the first slot (43a) to electrically contact the first slot (43a) slidingly.

5. The busbar subassembly of claim 3, wherein, 6. An electrical assembly, the electrical assembly comprising: a first circuit board (1); at least one second circuit board (2); and at least one first busbar sub-assembly (4A, 4B) electrically connected with the first circuit board (1) and the second circuit board (2) respectively, the first busbar sub-assembly (4A, 4B) comprising: a first busbar (41) electrically connected with the first circuit board (1); a second busbar (42) electrically connected with the second circuit board (2); and a first connector (43) electrically connected with the first busbar (41) and the second busbar (42) respectively, ​ ​ The first connector (43) is formed with a first slot (43a) configured to at least partially receive the second bus bar (42) and to be in sliding electrical contact with the second bus bar (42) in a direction perpendicular to the first circuit board (1), wherein the first bus bar (41) has a U-shaped structure and includes two side walls and a bottom wall connected to the two side walls respectively, the first connector (43) is detachably electrically connected to the bottom wall, and the first slot (43a) is located on a side of the first connector (43) away from the bottom wall in a plane parallel to the first circuit board.

7. The electrical assembly of claim 6, wherein, The second circuit board (2) is parallel to the first circuit board (1).

8. The electrical assembly of claim 7, wherein, The number of the first bus bar sub-assemblies (4A, 4B) is two, and the two first bus bar sub-assemblies (4A, 4B) are respectively used as a first positive bus bar sub-assembly (4A) and a first negative bus bar sub-assembly (4B).

9. The electrical assembly of claim 6, wherein, The two side walls are respectively detachably electrically connected to the first circuit board (1).

10. The electrical assembly of claim 9, wherein, The free ends of the side walls are provided with connecting portions (41a) for being screwed to the first circuit board (1).

11. The electrical assembly of claim 10, wherein, The second bus bar (42) has an L-shaped structure and includes a first arm and a second arm, the first arm is detachably electrically connected to the second circuit board (2), and the second arm is perpendicular to the first arm and is configured to be inserted into the first slot (43a) to be in sliding electrical contact with the first slot (43a).

12. The electrical assembly of claim 6, wherein, The contact area of the first circuit board (1) with the first bus bar (41) is provided with a tin plating layer, and / or the contact area of the second circuit board (2) with the second bus bar (42) is provided with a tin plating layer.

13. The electrical assembly of any of claims 6-12, wherein, Further comprising a plurality of third circuit boards (3) and at least one second bus bar sub-assembly (5A, 5B), the second bus bar sub-assembly (5A, 5B) is respectively electrically connected to the first circuit board (1) and the third circuit board (3), and the second bus bar sub-assembly (5A, 5B) includes: a third bus bar (51A, 51B) extending parallel to the first circuit board (1), a first end of the third bus bar (51A, 51B) being detachably electrically connected to the first circuit board (1); and a plurality of second connectors (52A, 52B), each of the third circuit boards (3) being electrically connected to a second end of the third bus bar (51A, 51B) opposite to the first end via one of the second connectors (52A, 52B).

14. The electrical assembly of claim 13, wherein, The number of the second bus bar sub-assemblies (5A, 5B) is two, and the two second bus bar sub-assemblies (5A, 5B) are respectively used as a second positive bus bar sub-assembly (5A) and a second negative bus bar sub-assembly (5B).

15. The electrical assembly of claim 13, wherein, The second connector (52A, 52B) is formed with a second slot (52a), and the second end of the third bus bar (51A, 51B) is configured to be inserted into the second slot (52a) and to be in sliding electrical contact with the second slot (52a).

16. The electrical assembly of claim 15, wherein, The third bus bar (51A, 51B) has a Z-shaped structure and includes a first portion close to the third circuit board (3) and parallel to the first circuit board (1), a third portion detachably connected with the first circuit board (1), and a third portion connected between the first portion and the second portion, the first portion being configured to be inserted into the second slot (52a) and in sliding electrical contact with the second slot (52a).

17. The electrical assembly of claim 13, wherein, The contact area of the first circuit board (1) with the third bus bar (51A, 51B) is provided with a tin plating layer.

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