Conducting bar, battery and vehicle

Abstract

The utility model provides a conducting bar, a battery and a vehicle. The conducting bar comprises a first conducting bar and a second conducting bar; the first conducting bar comprises a first main body part and a first bending part which is bent from one side of the first main body part; the second conductive bar is bent from the other side of the first main body part, and is laminated on the first main body part and the first bent part. Through the arrangement, the processes of welding, cutting and the like of the conducting bar are avoided, meanwhile, the high over-current capability of the conducting bar is met, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This application relates to the field of transportation vehicles, and more particularly to a conductive busbar, a battery, and a vehicle. Background Technology

[0002] With the rapid development of vehicle technology, electric vehicles, such as electric cars and electric bicycles, are becoming increasingly common. Simultaneously, the demand for faster charging speeds is also rising. Consequently, OEMs are imposing increasingly stringent requirements on the high-voltage conductive components of battery packs during production. To meet the increased current carrying capacity of battery packs, commercially available busbars typically employ copper-aluminum composites, use thicker aluminum busbars that are then upset thin, or weld copper and aluminum busbars. However, these methods lead to complex processes, high welding stress, poor reliability, and high manufacturing costs, which contradict the factory's manufacturing philosophy of cost reduction, efficiency improvement, and focus on production quality.

[0003] Therefore, it is necessary to provide an improved busbar to solve some or all of the above problems. Utility Model Content

[0004] This application provides a low-cost, high-current-capacity busbar, battery, and vehicle.

[0005] This application provides a conductive bus, including: a first conductive bus, the first conductive bus including a first main body portion and a first bent portion bent from one side of the first main body portion;

[0006] The second conductive bus is bent from the other side of the first main body and is stacked on the first main body and the first bent portion.

[0007] Furthermore, the second conductive bus includes a second main body portion and a second bent portion bent from one side of the second main body portion. The second main body portion is connected to the first main body portion and is stacked on the first main body portion, and the second bent portion is stacked on the first bent portion.

[0008] Furthermore, it also includes a mounting hole along the direction from the second conductive busbar to the first conductive busbar, the mounting hole penetrating the second bent portion and the first bent portion.

[0009] Furthermore, the first bending portion includes a vertical portion and a straight portion. The vertical portion is bent from one side of the first main body portion, and the straight portion is bent from the side of the vertical portion away from the first main body portion, and the straight portion is arranged parallel to the first main body portion. The second bending portion is stacked on the vertical portion and the straight portion respectively.

[0010] Furthermore, it also includes a clearance area. The second main body includes a first side and a second side connected to each other. The first side is disposed opposite to the side of the second main body connected to the first main body, and the second side is disposed opposite to the side of the second main body connected to the second bend.

[0011] The avoidance area is recessed from the side of the second conductive busbar away from the first main body, and the two sides of the avoidance area overlap with the first side and the second side, respectively.

[0012] Furthermore, the second conductive bus also includes a clearance hole, which penetrates the second conductive bus along the direction from the second conductive bus to the first conductive bus.

[0013] Furthermore, the first conductive bus also includes an observation hole that penetrates through the first main body and is disposed corresponding to the clearance hole, wherein the diameter of the observation hole is smaller than the diameter of the clearance hole.

[0014] Furthermore, the thickness of both the second conductive bus and the first conductive bus does not exceed 1.5 mm, and the length of the connection between the second conductive bus and the first main body is greater than the length of the other sides of the second conductive bus.

[0015] This application also provides a battery, including a battery body and a conductive bus as described above, wherein the conductive bus is disposed in the battery body.

[0016] This application also provides a vehicle including the battery described above.

[0017] Compared with the prior art, the conductive bus of this application is provided with a first conductive bus and a second conductive bus, and the second conductive bus is bent from one side of the first main body and stacked on the first main body and the first bent part. This arrangement avoids the welding and cutting processes of the conductive bus, while also meeting the high current carrying capacity of the conductive bus and reducing manufacturing costs.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0020] Figure 1 This is a three-dimensional view of the conductive bus of this application.

[0021] Figure 2 This is a perspective view of the first and second conductive busbars in the conductive busbars of this application before they are stacked.

[0022] Figure 3 This is a schematic diagram showing the conductor bar after it has been cut from a complete metal plate.

[0023] Figure 4 yes Figure 3 A schematic diagram showing the first and second bends formed when the busbar is a complete metal plate.

[0024] Figure 5 This is a partial perspective view of the battery in this application.

[0025] Explanation of reference numerals: 1-First conductive bar; 11-First main body; 111-First side; 112-Second side; 12-First bend; 121-Vertical part; 122-Straight part; 13-Observation hole; 2-Second conductive bar; 21-Second main body; 22-Second bend; 23-Allowing hole; 3-Mounting hole; 4-Allowing area; 40-Fixing hole; 5-Battery body; 51-Cell component; 52-Insulating base. Detailed Implementation

[0026] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0027] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0028] like Figure 1 and Figure 2As shown, the conductive bus of this application includes a first conductive bus 1 and a second conductive bus 2. The second conductive bus 2 is bent from one side of the first conductive bus 1 and stacked on top of the first conductive bus 1, that is, the conductive bus is formed by integral bending. Specifically, the first conductive bus 1 includes a first main body portion 11 and a first bent portion 12 bent from one side of the first main body portion 11. The second conductive bus 2 is bent from the other side of the first main body portion 11 and stacked on top of the first main body portion 11 and the first bent portion 12. With this configuration, the conductive bus of this application is formed by integral bending, which avoids processes such as welding and cutting of the conductive bus, while also meeting the high current carrying capacity of the conductive bus and reducing manufacturing costs.

[0029] In some embodiments, the first bent portion 12 includes a vertical portion 121 and a straight portion 122. The vertical portion 121 is bent from one side of the first main body portion 11, and the straight portion 122 is bent from the side of the vertical portion 121 away from the first main body portion 11, that is, the vertical portion 121 connects the straight portion 122 and the first main body portion 11. The straight portion 122 is arranged parallel to the first main body portion 11. It is worth noting that due to bending process errors, the straight portion 122 is approximately parallel to the first main body portion 11.

[0030] The vertical portion 121 is arranged approximately perpendicular to the horizontal portion 122 and the first main body portion 11. Admittedly, depending on the actual installation environment, the included angle between the vertical portion 121, the horizontal portion 122, and the first main body portion 11 may also be an obtuse angle or an acute angle.

[0031] In some embodiments, the second conductive bus 2 includes a second main body portion 21 and a second bent portion 22 bent from one side of the second main body portion 21. The second main body portion 21 is connected to the first main body portion 11, that is, the second main body portion 21 is bent from the first main body portion 11. The second main body portion 21 is stacked on the first main body portion 11, and the second bent portion 22 is stacked on the first bent portion 12. Specifically, the second bent portion 22 is stacked on both the vertical portion 121 and the horizontal portion 122. In other words, the structure of the second bent portion 22 is similar to that of the first bent portion 12, thereby allowing the second bent portion 22 to be stacked on the first bent portion 12.

[0032] The second conductive busbar 2 may further include a clearance hole 23, and the first conductive busbar 1 may further include an observation hole 13. Along the direction from the second conductive busbar 2 to the first conductive busbar 1, the clearance hole 23 penetrates the second conductive busbar 2, and the observation hole 13 penetrates the first main body portion 11 and is correspondingly provided with the clearance hole 23, i.e., the clearance hole 23 penetrates the second main body portion 21. The clearance hole 23 can be used to avoid electrode posts, so that the electrode posts can be welded to the first main body portion 11. Simultaneously, when the conductive busbar is installed on the battery, the clearance hole 23 can provide deformation space for the first main body portion 11 during cell expansion.

[0033] The diameter of the observation hole 13 is smaller than the diameter of the clearance hole 23, and the observation hole 13 is preferably concentric with the clearance hole 23. When the electrode post is welded to the first main body 11, the observation hole 13 can provide an observation window for the operator to inspect the welding status of the electrode post.

[0034] In some embodiments, the conductive busbar of this application may further include mounting holes 3, which penetrate the second bent portion 22 and the first bent portion 12 along the direction from the second conductive busbar 2 to the first conductive busbar 1. Specifically, the mounting holes 3 penetrate the straight portion 122. To improve the stability of the conductive busbar during installation, multiple mounting holes 3 are provided and are spaced apart on the second bent portion 22 and the first bent portion 12.

[0035] The conductive busbar of this application may further include a clearance area 4 and a fixing hole 40, while the first main body 11 includes a first side 111 and a second side 112 connected to each other. The first side 111 is disposed opposite to the side of the first main body 11 connected to the second main body 21, and the second side 112 is disposed opposite to the side of the second main body 21 connected to the first bent portion 12. The clearance area 4 is recessed from the side of the second conductive busbar 2 away from the first main body 11, and the two sides of the clearance area 4 coincide with the first side 111 and the second side 112, respectively.

[0036] The fixing hole 40 penetrates the first main body 11 and is set in correspondence with the avoidance area 4.

[0037] The thickness of both the second conductive busbar 2 and the first conductive busbar 1 does not exceed 1.5 mm to avoid interference with other components during installation. The length of the connection between the second conductive busbar 2 and the first main body 11 is greater than the length of other sides of the second conductive busbar 2. Specifically, the length of the common side connecting the second main body 21 and the first main body 11 is greater than the length of other sides of the second conductive busbar 2. This arrangement ensures that the current carrying capacity between the second conductive busbar 2 and the first conductive busbar 1 is maintained at the maximum level.

[0038] like Figures 1 to 4 As shown, the conductive busbar of this application is made of a single material such as aluminum or copper; however, it can also be made of an alloy such as aluminum, copper, or silver. In the manufacturing process of the conductive busbar of this application, a complete metal plate is first cut to form structures such as observation hole 13, clearance hole 23, mounting hole 3, and clearance area 4. Next, the metal plate is bent for the first time to form a first bent portion 12 and a second bent portion 22. Finally, the metal plate is bent a second time in its middle to form a second main body portion 21 and a first main body portion 11, and the second main body portion 21 is stacked on top of the first main body portion 11. Please refer to [reference needed] for the specific forming sequence of the conductive busbar. Figures 3-4 - Figure 2-Figure 1 .

[0039] To reduce manufacturing costs and improve the neatness of the conductive busbars, and to facilitate installation, the projection of the first conductive busbar 1 covers the projection of the second conductive busbar 2 along the direction from the first main body 11 to the second main body 21.

[0040] like Figure 5 As shown, this application also provides a battery, including a battery body 5 and a conductive bus as described above, the conductive bus being disposed on the battery body 5. Specifically, the battery body 5 includes a cell 51 and an insulating base 52, a first main body portion 11 is connected to the cell 51, and a first bent portion 12 and a second bent portion 22 are connected to the insulating base 52.

[0041] This application discloses a vehicle that includes the battery described above.

[0042] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A conductive bus, characterized in that, include: A first conductive bus, the first conductive bus includes a first main body portion and a first bent portion that is bent from one side of the first main body portion; The second conductive bus is bent from the other side of the first main body and is stacked on the first main body and the first bent portion.

2. The conductive bus according to claim 1, characterized in that, The second conductive bus includes a second main body and a second bent portion that is bent from one side of the second main body. The second main body is connected to the first main body and is stacked on the first main body, and the second bent portion is stacked on the first bent portion.

3. The conductive bus according to claim 2, characterized in that, It also includes a mounting hole along the direction from the second conductive busbar to the first conductive busbar, the mounting hole penetrating the second bent portion and the first bent portion.

4. The conductive bus according to claim 2, characterized in that, The first bending portion includes a vertical portion and a straight portion. The vertical portion is bent from one side of the first main body portion, and the straight portion is bent from the side of the vertical portion away from the first main body portion, and the straight portion is arranged parallel to the first main body portion. The second bending portion is stacked on the vertical portion and the straight portion respectively.

5. The conductive bus according to claim 2, characterized in that, It also includes a clearance area. The second main body includes a first side and a second side connected to each other. The first side is disposed opposite to the side of the second main body connected to the first main body, and the second side is disposed opposite to the side of the second main body connected to the second bend. The avoidance area is recessed from the side of the second conductive busbar away from the first main body, and the two sides of the avoidance area overlap with the first side and the second side, respectively.

6. The conductive bus according to claim 1, characterized in that, The second conductive bus also includes a clearance hole, which extends through the second conductive bus along the direction from the second conductive bus to the first conductive bus.

7. The conductive bus according to claim 6, characterized in that, The first conductive busbar also includes an observation hole that penetrates through the first main body and is disposed corresponding to the clearance hole. The diameter of the observation hole is smaller than the diameter of the clearance hole.

8. The conductive bus according to claim 1, characterized in that, The thickness of both the second conductive bus and the first conductive bus does not exceed 1.5 mm, and the length of the connection between the second conductive bus and the first main body is greater than the length of the other sides of the second conductive bus.

9. A battery, characterized in that, It includes a battery body and a conductive bus as described in any one of claims 1 to 8, wherein the conductive bus is disposed on the battery body.

10. A vehicle, characterized in that, Includes the battery as described in claim 9.

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