Busbar mounting structure and battery pack

Abstract

The utility model provides a busbar mounting structure and a battery pack, and belongs to the technical field of battery packs, the busbar mounting structure comprises a beam body and a busbar group, the beam body is suitable for being mounted in a box body of the battery pack, and an accommodating space is formed in the beam body; the busbar group comprises a first busbar and a second busbar which are arranged at an interval, and the busbar group is fixedly arranged in the accommodating space; the battery pack comprises a box body and a busbar mounting structure, and the busbar mounting structure is arranged in the box body. The wiring of the busbar group is carried out by utilizing the accommodating space in the beam body in the battery pack, additional support and fixation are not needed, additional space is not occupied, the structure is more compact, and the space utilization rate in the battery pack is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and particularly relates to a busbar installation structure and a battery pack. Background Art

[0002] In a battery pack, a busbar is required to connect battery modules. The layout of the busbar is affected by the layout positions of various components in the battery pack, and the busbar, wiring harness, etc. in the battery pack are intricate. Therefore, the installation and fixation of the busbar are crucial.

[0003] Currently, in a battery pack, generally holes are drilled in a beam and buckles are added, or a separate bracket and buckles are set to fix the busbar, which makes the layout of the battery pack box space tense and reduces the volume utilization rate of the battery pack. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that in the prior art, a separate bracket is set in the battery pack to fix the busbar, which makes the layout of the battery pack box space tense and reduces the volume utilization rate of the battery pack, so as to provide a busbar installation structure and a battery pack.

[0005] To solve the above technical problem, the utility model provides a busbar installation structure, including:

[0006] A beam body, adapted to be installed in the box body of the battery pack, and the inside of the beam body has a receiving space;

[0007] A busbar group, including a first busbar and a second busbar arranged at intervals, and the busbar group is fixedly arranged in the receiving space.

[0008] In one embodiment, it further includes a limiting member, the limiting member is sleeved on the busbar group, and the limiting member is clamped in the receiving space.

[0009] In one embodiment, an elastic protruding member is arranged on the limiting member, and the elastic protruding member abuts against the side wall of the receiving space.

[0010] In one embodiment, the elastic protruding member is of a plate structure.

[0011] In one embodiment, the elastic protruding member is of an arc-shaped protruding structure.

[0012] In one embodiment, there are a plurality of the limiting members, and the plurality of limiting members are sleeved on the busbar group at intervals.

[0013] In one embodiment, a separator is arranged between the first busbar and the second busbar.

[0014] In one embodiment, the first busbar includes a first rigid busbar section and a first flexible busbar section; the second busbar includes a second rigid busbar section and a second flexible busbar section.

[0015] In one embodiment, when the busbar group passes through the accommodation space, the first flexible busbar section and the second flexible busbar section are tied together by a fixing member.

[0016] The present utility model also provides a battery pack, including a box body and the busbar installation structure described in any one of the above, and the busbar installation structure is arranged inside the box body.

[0017] The technical solution of the present utility model has the following advantages:

[0018] The busbar installation structure provided by the present utility model includes a beam body and a busbar group. The beam body is adapted to be installed in the box body of the battery pack, and the inside of the beam body has an accommodation space; the busbar group includes a first busbar and a second busbar arranged at intervals, and the busbar group is fixedly arranged in the accommodation space.

[0019] By utilizing the accommodation space inside the beam body in the battery pack for the routing of the busbar group, no additional support and fixation are required, no additional space is occupied, the structure is more compact, and the space utilization rate inside the battery pack is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of an embodiment of the busbar installation structure provided in Embodiment 1 of the present utility model;

[0022] Figure 2 For Figure 1 the schematic structural diagram of the busbar group and the limiting member;

[0023] Figure 3 For Figure 2 the schematic structural diagram of the first busbar;

[0024] Figure 4 For Figure 2 the enlarged schematic structural diagram of the limiting member;

[0025] Figure 5 For Figure 1 the schematic structural diagram of the busbar group in the penetrating state.

[0026] Description of reference numerals:

[0027] 1. Beam body; 2. Accommodating space; 3. Limiting member; 4. Through groove; 5. Elastic protrusion; 6. First bus; 7. Second bus; 8. Isolation member; 9. First hard row segment; 10. First soft row segment; 11. Second hard row segment; 12. Second soft row segment; 13. Fixing member. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Example 1

[0033] The busbar mounting structure provided in this embodiment is used for connecting the battery energy distribution unit of the battery pack and the connector.

[0034] like Figures 1 to 4As shown, a specific implementation of the busbar installation structure provided by this embodiment includes a beam body 1 and a busbar group. The beam body 1 is adapted to be installed inside the battery pack casing, and the interior of the beam body 1 has an accommodation space 2; the busbar group includes a first busbar 6 and a second busbar 7 arranged at intervals, and the busbar group is fixedly arranged in the accommodation space 2.

[0035] By using the accommodation space 2 inside the beam body 1 in the battery pack for the routing of the busbar group, there is no need to set up additional supports and fixings, no additional space will be occupied, the structure is more compact, and the space utilization rate inside the battery pack is increased.

[0036] The busbar group includes a first busbar 6 and a second busbar 7 arranged at intervals. The busbar group formed by the first busbar 6 and the second busbar 7 is fixedly arranged in the accommodation space 2, which means that the busbar group is threaded through the accommodation space 2 and fixed in the accommodation space 2 without moving, being relatively stable. At the same time, both ends of the busbar group extend out of the accommodation space 2, facilitating connection with other components and enabling the electrical signals of the battery module to be led out. Specifically, the longitudinal cross-sectional size of the accommodation space 2 is larger than the cross-sectional size of the busbar group, facilitating the threading of the busbar group.

[0037] Preferably, both the first busbar 6 and the second busbar 7 are copper bars.

[0038] Specifically, the beam body 1 can be a cross beam or a longitudinal beam inside the battery pack casing. The cross beams and longitudinal beams inside the battery pack casing are arranged crosswise to form a space for accommodating the battery module; the beam body 1 is a hollow structure, and this hollow structure forms the accommodation space 2. Further, multiple accommodation spaces 2 are formed inside the beam body 1 through multiple rib-like structures, and the busbar group is arranged in any one of the accommodation spaces 2.

[0039] As Figure 2 and Figure 4 shown, the busbar installation structure provided by this embodiment further includes a limiting member 3. The limiting member 3 is sleeved on the busbar group, and the limiting member 3 is clamped in the accommodation space 2. Specifically, the limiting member 3 has a through groove 4, and the busbar group is threaded through the through groove 4.

[0040] The setting of the limiting member 3 enables the busbar group to be fixed in the accommodation space 2 after being threaded into the accommodation space 2 to a specified position, realizing the limitation with the beam body 1 and also ensuring that the torque attenuation of the busbar group meets the requirements. The size of the through groove 4 is adapted to the cross-sectional size of the busbar group, and the limiting member 3 realizes the fixation of the busbar group.

[0041] Specifically, the busbar group can be bonded in the through groove 4, or the limiting member 3 can be made of an elastic material to squeeze the busbar group in the through groove 4.

[0042] AsFigure 4 As shown, for the busbar installation structure provided in this embodiment, an elastic protrusion 5 is provided on the limiting member 3, and the elastic protrusion 5 abuts against the side wall of the accommodation space 2. During actual use, first, the limiting member 3 is sleeved on the busbar group, and then the busbar group sleeved with the limiting member 3 is inserted into the accommodation space 2 of the beam body 1. The provision of the elastic protrusion 5 facilitates the insertion process of the busbar group. During the insertion process, by applying an external force, the elastic force of the elastic protrusion 5 is overcome, so that the limiting member 3 and the busbar group move in the accommodation space 2. After the busbar group is installed, the external force is removed, and the elastic protrusion 5 always abuts against the side wall of the accommodation space 2 under the action of the elastic force, ensuring the stability of the limiting member 3, and thus ensuring the stability of the busbar group fixed in the accommodation space 2.

[0043] In a specific embodiment, the elastic protrusion 5 is of a plate structure. One end of the plate structure is connected to the side wall of the limiting member, and the other end of the plate structure abuts against the side wall of the accommodation space 2. Preferably, the other end of the plate structure is inclined. Inserting along the inclined direction has less resistance and is convenient for moving in the accommodation space 2. As Figure 2 and Figure 4 shown, it is to be inserted from right to left.

[0044] In addition, as an alternative embodiment, the elastic protrusion 5 is an arc-shaped protrusion structure.

[0045] In other embodiments, the elastic protrusion 5 is not provided, and the structure size of the limiting member 3 is adapted to the cross-sectional size of the accommodation space 2. The limiting member 3 is made of an elastic material. After moving to the specified position by relying on an external force, the limiting is carried out by the friction force between the structure of the limiting member 3 itself and the accommodation space 2.

[0046] As Figure 2 shown, for the busbar installation structure provided in this embodiment, there are a plurality of the limiting members 3, and the plurality of the limiting members 3 are sleeved on the busbar group at intervals. It is ensured that the busbar group in the accommodation space 2 is stable along its length direction.

[0047] In addition, as an alternative embodiment, there is one limiting member 3, and its length is equal to the length of the accommodation space 2.

[0048] As Figure 2 and Figure 3 shown, for the busbar installation structure provided in this embodiment, an isolation member 8 is provided between the first busbar 6 and the second busbar 7. The isolation member 8 is used to isolate and space apart the first busbar 6 and the second busbar 7 to prevent the two busbars from colliding with each other.

[0049] Specifically, the spacer 8 is a spacer foam, which can be provided only on the first bus bar 6, or only on the second bus bar 7, or on both the first bus bar 6 and the second bus bar 7.

[0050] As Figure 2 and Figure 3 shown, in the bus bar mounting structure provided in this embodiment, the first bus bar 6 includes a first rigid bus bar section 9 and a first flexible bus bar section 10; the second bus bar 7 includes a second rigid bus bar section 11 and a second flexible bus bar section 12; the first rigid bus bar section 9 and the second rigid bus bar section 11 are located on the same side of the beam body 1.

[0051] By combining the rigid bus bar section and the flexible bus bar section, the cost is reduced, and the advantages of the rigid bus bar and the flexible bus bar are combined. The flexible bus bar section is only at the end, and the middle part is the rigid bus bar section, making the process of passing the bus bar group through the beam body 1 convenient and simple, and the whole is more reliable and stable.

[0052] As Figure 5 shown, in the bus bar mounting structure provided in this embodiment, when the bus bar group passes through the accommodation space 2, the first flexible bus bar section 10 and the second flexible bus bar section 12 are tied together by a fixing member 13.

[0053] Specifically, the fixing member 13 can be a cable tie or other sleeves, etc. Before passing through, bend the flexible bus bar section to be flush with the middle of the bus bar, and then tie the two flexible bus bar sections together. First, insert the flexible bus bar section into the accommodation space 2, and then move it to the other end of the accommodation space 2 to extend out. The setting of the fixing member 13 avoids the uncontrollable state of the flexible bus bar section in the accommodation space 2. When it is bent, it is not conducive to its feeding out. After feeding out, the fixing member 13 can be removed to connect the flexible bus bar section with the specified component.

[0054] In the bus bar mounting structure provided in this embodiment, both between the first rigid bus bar section 9 and the first flexible bus bar section 10 and between the second rigid bus bar section 11 and the second flexible bus bar section 12 are connected by welding. The welding connection not only meets the assemblability but also ensures the electrical performance of the bus bar.

[0055] Embodiment 2

[0056] A specific implementation manner of the battery pack provided in this embodiment includes a box body and the bus bar mounting structure according to any one of Embodiment 1, and the bus bar mounting structure is arranged inside the box body.

[0057] Specifically, the beam body 1 in the bus bar mounting structure is a cross beam or a longitudinal beam conventionally arranged inside the box body, without additional setting, which increases the space utilization rate inside the battery pack.

[0058] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present utility model.

Claims

1. A busbar installation structure, characterized in that: include: A beam body (1) is suitable for being installed in a box of a battery pack, and the interior of the beam body (1) has a receiving space (2); The busbar group comprises a first busbar (6) and a second busbar (7) which are arranged at intervals, and the busbar group is fixedly arranged in the accommodating space (2).

2. The busbar installation structure according to claim 1, characterized in that: It also comprises a limiting member (3), wherein the limiting member (3) is sleeved on the busbar assembly, and the limiting member (3) is clamped in the accommodating space (2).

3. The busbar installation structure according to claim 2, characterized in that: An elastic protrusion (5) is provided on the limiting member (3), and the elastic protrusion (5) abuts against the side wall of the accommodating space (2).

4. The busbar installation structure according to claim 3, characterized in that: The elastic protrusion (5) is a plate-type structure.

5. The busbar installation structure according to claim 3, characterized in that: The elastic protrusion (5) is an arc-shaped protrusion structure.

6. The busbar installation structure according to claim 2, characterized in that: There are a plurality of the limiting members (3), and the plurality of limiting members (3) are sleeved on the busbar assembly at intervals.

7. The busbar installation structure according to claim 1, characterized in that: An isolating member (8) is provided between the first busbar (6) and the second busbar (7).

8. The busbar installation structure according to claim 7, characterized in that: The first busbar (6) comprises a first hard row segment (9) and a first soft row segment (10); the second busbar (7) comprises a second hard row segment (11) and a second soft row segment (12).

9. The busbar installation structure according to claim 8, characterized in that: When the busbar group passes through the accommodating space (2), the first flexible busbar segment (10) and the second flexible busbar segment (12) are fastened together by a fixing member (13).

10. A battery pack, characterized in that: It comprises a box body and the busbar mounting structure according to any one of claims 1 to 9, wherein the busbar mounting structure is arranged inside the box body.

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