Switching base assembly and battery pack

Abstract

The utility model discloses an adapter base assembly and a battery pack, and belongs to the technical field of battery packs. The switching base assembly comprises a supporting assembly, a first switching row and a second switching row. The first end of the first switching bar and the first end of the second switching bar are electrically connected and are respectively connected to the supporting assembly, the second end of the first switching bar is located above the second end of the second switching bar, and the second end of the first switching bar is used for being electrically connected to a battery driving unit; and the second end of the second switching bar is used for being electrically connected to the connecting bar of the battery cell module. According to the adapter base assembly disclosed by the utility model, the electric connection between the connecting bar of the battery pack and the battery driving unit can be realized, the battery cell module cannot interfere with other structures of the battery pack, the short circuit of the battery cell module can be avoided, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a switching base assembly and a battery pack. Background Art

[0002] At present, in the process of grouping battery cells to form a battery pack, the integrated busbar (CCS) and the connecting bar (copper bar or aluminum bar) are usually first welded to each battery cell to form a large battery module; then the formed battery module is turned over and installed in a box.

[0003] However, since the connecting bar is located at the lower part of the box body and the battery drive unit (BDU) is arranged at the upper part of the box body, there is a height difference between the connecting bar and the battery drive unit, and it is difficult to directly connect the connecting bar and the battery drive unit at high voltage; the battery cell module can be adjusted to enable a high-voltage connection between the connecting bar and the battery drive unit; but in the process of adjusting the battery cell module, on the one hand, the battery cell module is prone to interfere with other structures on the box body; on the other hand, it is easy for the positive and negative poles of the battery cell to touch the box body and cause a short circuit, making the safety of the entire battery pack low. Utility Model Content

[0004] The purpose of the utility model is to propose an adapter base assembly and a battery pack, which can realize the electrical connection between the connection row in the battery pack and the battery drive unit, and prevent the battery cell module from interfering with other structures of the battery pack, and can avoid short circuit of the battery cell module, with high safety.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A transfer base assembly, comprising:

[0007] Support components;

[0008] A first adapter row and a second adapter row, wherein the first end of the first adapter row and the first end of the second adapter row are electrically connected and respectively connected to the support assembly, and the second end of the first adapter row is located at the

[0009] The second end of the second adapter row is above the second end of the second adapter row, and the second end of the first adapter row is used to be electrically connected to the battery drive unit, and the second end of the second adapter row is used to be electrically connected to the connection row of the battery cell module.

[0010] As an optional solution, the support assembly includes:

[0011] A bottom plate, located on the battery module, the battery module and the adapter base assembly are respectively located in a box, and the battery drive unit is arranged on the box;

[0012] The adapter base is installed on the bottom plate, and the first ends of the first adapter row and the second adapter row are respectively connected to the adapter base.

[0013] As an alternative, the adapter base is insulated from the bottom plate.

[0014] As an alternative, a limiting square hole is provided on the bottom plate, and the adapter base is limitedly inserted into the limiting square hole.

[0015] As an alternative, a buckle is connected to one side of the adapter base, and a limiting clamping hole is also provided on the bottom plate. The buckle passes through the limiting clamping hole and abuts against the bottom end surface of the bottom plate.

[0016] As an alternative, a first nut is provided inside the adapter base, and the first nut is arranged adjacent to the buckle; the adapter base assembly further includes:

[0017] A first bolt, which passes through the bottom plate and is threadedly connected to the first nut.

[0018] As an alternative, a receiving cavity is provided at the bottom end of the adapter base, and the first ends of the first adapter row and the second adapter row are stacked in the receiving cavity.

[0019] As an alternative, a connection through hole communicating with the receiving cavity is further provided on the adapter base, and the first end of the first adapter row passes through the connection through hole and is located in the receiving cavity.

[0020] As an alternative, a protrusion is provided on one of the first end of the first adapter row and the inside of the receiving cavity, and a groove is provided on the other. The protrusion can be limited in the groove.

[0021] As an alternative, a second nut is further provided inside the adapter base; the adapter base assembly further includes:

[0022] A second bolt, which passes through the first ends of the second adapter row and the first adapter row through the receiving cavity and is threadedly connected to the second nut.

[0023] A battery pack includes a box body, a battery cell module, a battery driving unit, and the adapter base assembly as described above.

[0024] The beneficial effects of the present utility model are:

[0025] By electrically connecting the first adapter row and the second adapter row to each other and respectively connecting them to the support assembly, the second end of the first adapter row located above is used to be electrically connected to the battery drive unit, and the second end of the second adapter row located below is used to be electrically connected to the connection row of the battery cell module. Thus, the electrical connection between the connection row and the battery drive unit can be achieved through this adapter base assembly. On the one hand, it ensures that the battery cell module does not interfere with other structures of the battery pack, guaranteeing the smoothness of the electrical connection between the connection row and the battery drive unit. On the other hand, it can avoid the short circuit of the battery cell module, making the entire battery pack have a high level of safety. Brief Description of the Drawings

[0026] Figure 1 is a schematic structural view of the front side of the adapter base assembly provided by the present utility model;

[0027] Figure 2 is a schematic structural view of the back side of the adapter base assembly provided by the present utility model;

[0028] Figure 3 is Figure 2 the cross-sectional view taken along A-A in

[0029] Figure 4 is a schematic exploded structural view of the adapter base assembly provided by the present utility model;

[0030] Figure 5 is a schematic structural view of the adapter base provided by the present utility model from one perspective;

[0031] Figure 6 is a schematic structural view of the adapter base provided by the present utility model from another perspective.

[0032] Description of the Reference Numerals:

[0033] 1 - Bottom plate; 11 - Limiting square hole; 12 - Mounting hole; 13 - Limiting clamping hole;

[0034] 2 - Adapter base; 21 - Accommodating cavity; 22 - First injection hole; 23 - Second injection hole; 24 - Protrusion; 25 - Buckle; 26 - First nut; 27 - Connecting through hole; 28 - Second nut;

[0035] 3 - First adapter row; 31 - First through hole; 32 - Groove;

[0036] 4 - Second adapter row; 41 - Second through hole;

[0037] 51 - First bolt; 52 - Second bolt. Detailed Description of the Embodiment

[0038] All features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any way.

[0039] Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features. Throughout the specification, the same reference numerals indicate the same elements.

[0040] To make the technical problems solved by the present utility model, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments.

[0041] In this embodiment, a transfer base assembly and a battery pack including the transfer base assembly are proposed. The battery pack further includes a box body, a battery cell module, and a battery driving unit. The battery cell module is placed in the box body, and the battery cell module includes a plurality of battery cells and connection rows respectively electrically connected to each battery cell. The battery driving unit is arranged on the box body, the connection rows are located in the lower part of the box body, and the battery driving unit is located in the upper part of the box body. Through the transfer base assembly, the electrical connection between the connection rows with a height position difference and the battery driving unit can be realized, and the safety of the battery pack can be ensured to be relatively high.

[0042] It is worth noting that the battery cell module, the battery driving unit, and the box body are respectively common structures in existing battery packs, and their working principles will not be described in detail here. In this embodiment, the specific structure of the transfer base assembly will be mainly described in detail. Among them, the connection row can specifically be a copper row or an aluminum row, which is not limited here.

[0043] Specifically, as Figures 1 to 4 shown, the transfer base assembly includes a support assembly, a first transfer row 3, and a second transfer row 4. Among them, the first end of the first transfer row 3 and the first end of the second transfer row 4 are electrically connected and respectively connected to the support assembly. The second end of the first transfer row 3 is located above the second end of the second transfer row 4, and the second end of the first transfer row 3 is used for electrically connecting to the battery driving unit arranged on the box body, and the second end of the second transfer row 4 is used for electrically connecting to the connection row of the battery cell module. Among them, the first transfer row 3 and the second transfer row 4 can be copper rows or aluminum rows, which is not limited here.

[0044] This embodiment changes the electrical connection mode between the connection row and the battery drive unit; by electrically connecting the first adapter row 3 and the second adapter row 4 to each other and respectively connecting them to the support assembly, the second end of the first adapter row 3 located above is used to be electrically connected to the battery drive unit provided on the box body, and the second end of the second adapter row 4 located below is used to be electrically connected to the connection row of the battery cell module, so that the electrical connection between the connection row and the battery drive unit can be realized through this adapter base assembly. On the one hand, it makes the battery cell module not interfere with other structures of the battery pack, ensuring the smoothness of the electrical connection between the connection row and the battery drive unit; on the other hand, it can avoid the short circuit of the battery cell module, making the safety of the entire battery pack relatively high.

[0045] Specifically, as Figure 1 shown, the support assembly includes a bottom plate 1 and an adapter base 2; wherein, the bottom plate 1 is located on the battery cell module, the adapter base 2 is installed on the bottom plate 1, and the first ends of the first adapter row 3 and the second adapter row 4 are respectively connected to the adapter base 2.

[0046] Furthermore, the adapter base 2 is insulatingly connected to the bottom plate 1 to ensure the insulation between the bottom plate 1 and the first adapter row 3 and the second adapter row 4 respectively, so as to avoid the short circuit caused by the first adapter row 3 and the second adapter row 4 touching the box body through the bottom plate 1, and further making the safety of the entire battery pack relatively high. Among them, the material of the adapter base 2 is an insulating material to achieve the insulating connection between the adapter base 2 and the bottom plate 1. In this embodiment, the material of the adapter base 2 can specifically be a plastic material.

[0047] Specifically, as Figures 1 to 4 shown, a limiting square hole 11 is provided on the bottom plate 1, and the adapter base 2 is limit-passed through the limiting square hole 11, so as to position the adapter base 2 on the bottom plate 1 through the limiting effect of the limiting square hole 11 on the adapter base 2, ensuring the accurate positioning between the bottom plate 1 and the adapter base 2.

[0048] Furthermore, as Figures 2 to 6 shown, a buckle 25 is connected to one side of the adapter base 2, and a limiting clamping hole 13 is also provided on the bottom plate 1. The limiting clamping hole 13 is located on one side of the limiting square hole 11. The buckle 25 passes through the limiting clamping hole 13 and abuts against the bottom end surface of the bottom plate 1 to limit the adapter base 2 on the bottom plate 1, better positioning the adapter base 2 on the bottom plate 1, and further ensuring the accurate positioning between the bottom plate 1 and the adapter base 2. Among them, the buckle 25 and the adapter base 2 are integrally formed structures.

[0049] Specifically speaking, as Figures 4 to 6As shown, a first nut 26 is provided inside the adapter base 2, and the first nut 26 is disposed adjacent to the buckle 25; the adapter base assembly further includes a first bolt 51, the first bolt 51 passes through the mounting hole 12 on the bottom plate 1 from bottom to top and is threadedly connected to the first nut 26 to achieve the fixed connection between the bottom plate 1 and the adapter base 2; and, the mounting holes 12 and the limit clamping holes 13 on the bottom plate 1 are square and disposed on the outer periphery of the limit square hole 11, and a first injection hole 22 is further provided inside the adapter base 2 so that the first nut 26 can be fastened in the first injection hole 22 by injection molding.

[0050] Specifically, as Figures 4 to 6 shown, a plurality of first nuts 26 and first bolts 51 are respectively provided, and one first bolt 51 is threadedly connected to one first nut 26, making the fixed connection between the bottom plate 1 and the adapter base 2 more stable. In this embodiment, two first nuts 26 and two first bolts 51 are respectively provided, and the two first bolts 51 are oppositely disposed.

[0051] Furthermore, as Figure 2 and Figure 3 shown, a receiving cavity 21 is provided at the bottom end of the adapter base 2, the first ends of the first adapter row 3 and the second adapter row 4 are stacked inside the receiving cavity 21, and the first end of the first adapter row 3 is bent and connected to the second end of the first adapter row 3, and the first end of the second adapter row 4 is bent and connected to the second end of the second adapter row 4.

[0052] Specifically, as Figures 3 to 6 shown, a connection through hole 27 communicating with the receiving cavity 21 is further provided on the adapter base 2, the first end of the first adapter row 3 horizontally passes through the connection through hole 27 and is located inside the receiving cavity 21, the first end of the second adapter row 4 is directly placed inside the receiving cavity 21, and the first end of the second adapter row 4 is located below the first end of the first adapter row 3.

[0053] Furthermore, as Figure 4 and Figure 5 shown, a protrusion 24 is provided on one of the first end of the first adapter row 3 and the inside of the receiving cavity 21, and a groove 32 is provided on the other, and the protrusion 24 can be limited in the groove 32 so as to be able to limit the first adapter row 3 in the receiving cavity 21 to position the first adapter row 3 to the adapter base 2, ensuring the accurate positioning between the first adapter row 3 and the adapter base 2. In this embodiment, a groove 32 is provided on the first end of the first adapter row 3, and a protrusion 24 protrudes inside the receiving cavity 21. In other embodiments, a protrusion 24 may also be provided on the first end of the first adapter row 3, and a groove 32 is provided inside the receiving cavity 21, which is not specifically limited herein.

[0054] Specifically, as Figure 4 and Figure 5As shown, a plurality of grooves 32 and protrusions 24 are respectively provided, and one protrusion 24 is limited within one groove 32, so that the positioning effect of the first adapter row 3 in the accommodation cavity 21 is better. In this embodiment, two grooves 32 and two protrusions 24 are respectively provided, and the two protrusions 24 are arranged oppositely.

[0055] It should be noted that, as Figure 4 and Figure 5 shown, an L-shaped notch is formed at the end of the first end of the first adapter row 3, and this L-shaped notch forms the above-mentioned groove 32. When the first end of the first adapter row 3 is installed in the accommodation cavity 21, the protrusion 24 abuts against the L-shaped notch to limit the first adapter row 3 in the accommodation cavity 21.

[0056] Furthermore, as Figure 2 、 Figure 3 and Figure 5 shown, a second nut 28 is further provided in the adapter base 2; the adapter base assembly further includes a second bolt 52. The second bolt 52 passes through the accommodation cavity 21 and then passes through the first end of the second adapter row 4 and the first end of the first adapter row 3 from bottom to top and is threadedly connected to the second nut 28 to realize the fixed connection between the first adapter row 3, the second adapter row 4 and the adapter base 2; and, a second injection hole 23 is further provided in the adapter base 2 to be able to fasten the second nut 28 in the second injection hole 23 by injection molding.

[0057] It should be noted that, as Figures 2 to 5 shown, a first through hole 31 is provided on the first end of the first adapter row 3, and a second through hole 41 is provided on the first end of the second adapter row 4. The second bolt 52 passes through the second through hole 41 and the first through hole 31 from bottom to top and is threadedly connected to the second nut 28.

[0058] The structure and assembly of the adapter base assembly in this embodiment are relatively simple, do not occupy much use space in the box body, and have a low cost; moreover, this adapter base assembly can realize the electrical connection between the connection row in the battery pack and the battery drive unit, the connection method is simple and convenient, does not interfere with other structures on the box body, and can provide effective insulation protection for the first adapter row 3 and the second adapter row 4, so that the safety of the entire battery pack is relatively high.

[0059] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A transfer base assembly, characterized in that: include: Support components; A first adapter bar (3) and a second adapter bar (4), wherein the first end of the first adapter bar (3) and the first end of the second adapter bar (4) are electrically connected and respectively connected to the support assembly, the second end of the first adapter bar (3) is located above the second end of the second adapter bar (4), and the second end of the first adapter bar (3) is used to be electrically connected to a battery drive unit, and the second end of the second adapter bar (4) is used to be electrically connected to a connection bar of a battery cell module.

2. The adapter base assembly according to claim 1, characterized in that: The support assembly comprises: A bottom plate (1) is located on the battery module, the battery module and the adapter base assembly are respectively located in a box, and the battery drive unit is arranged on the box; An adapter base (2) is mounted on the bottom plate (1), and a first end of the first adapter row (3) and a first end of the second adapter row (4) are respectively connected to the adapter base (2).

3. The adapter base assembly according to claim 2, wherein: The adapter base (2) is insulated and connected to the base plate (1).

4. The adapter base assembly according to claim 2, wherein: The bottom plate (1) is provided with a limiting square hole (11), and the adapter base (2) is limitedly inserted into the limiting square hole (11).

5. The adapter base assembly according to any one of claims 2 to 4, characterized in that: A buckle (25) is connected to one side of the adapter base (2), and a limit clamping hole (13) is also provided on the base plate (1). The buckle (25) passes through the limit clamping hole (13) and abuts against the bottom end surface of the base plate (1).

6. The adapter base assembly according to claim 5, characterized in that: The adapter base (2) is provided with a first nut (26), and the first nut (26) is arranged adjacent to the buckle (25); the adapter base assembly further comprises: A first bolt (51), the first bolt (51) passes through the base plate (1) and is threadedly connected to the first nut (26).

7. The adapter base assembly according to any one of claims 2 to 4, characterized in that: The bottom end of the adapter base (2) is provided with a receiving cavity (21), and the first end of the first adapter row (3) and the first end of the second adapter row (4) are stacked in the receiving cavity (21).

8. The adapter base assembly according to claim 7, characterized in that: The adapter base (2) is also provided with a connecting through hole (27) communicating with the accommodating cavity (21); the first end of the first adapter row (3) passes through the connecting through hole (27) and is located in the accommodating cavity (21).

9. The adapter base assembly according to claim 7, wherein: One of the first end of the first adapter row (3) and the accommodating cavity (21) is provided with a protrusion (24), and the other is provided with a groove (32), and the protrusion (24) can be limited in the groove (32).

10. The adapter base assembly according to claim 7, wherein: A second nut (28) is also provided in the adapter base (2); the adapter base assembly also includes: A second bolt (52), the second bolt (52) passes through the first end of the second adapter row (4) and the first end of the first adapter row (3) through the accommodating cavity (21) and is threadedly connected to the second nut (28).

11. A battery pack, characterized in that: It comprises a box body, a battery cell module, a battery drive unit and a transfer base assembly as described in any one of claims 1 to 10.

Images