A bus

Abstract

The utility model discloses a bus bar, comprising a front side plate, a rear side plate, a left side plate and a right side plate, wherein the left side of the front side plate is fixedly connected to the left side of the rear side plate through the left side plate, the right side of the front side plate is fixedly connected to the right side of the rear side plate through the right side plate, the left side surface of the left side plate and the right side surface of the right side plate are respectively planar and used for connecting with the pole ear; the advantage is that it is easy to weld and fix with the pole ear, which is conducive to reducing the complexity of processing.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery modules, in particular to a busbar. Background Art

[0002] Soft-pack battery modules have been widely used in various fields such as new energy vehicles and electronic equipment due to their advantages of high energy density, high safety and long life. The existing soft-pack battery module includes multiple soft-pack battery cells, plastic brackets, busbars, end plates, etc. Multiple soft-pack battery cells are stacked into groups, the plastic brackets are distributed on the front and back sides of the battery group, the busbars are fixed on the plastic brackets, the pole ears of the soft-pack battery cells pass through the plastic brackets and are welded and fixed to the busbars, and the end plates are distributed on the left and right sides of the battery group.

[0003] Conventional busbars are in sheet form. When welding the tabs, the tabs of the soft-pack battery cell need to be passed through the plastic bracket first, and then attached to the end face of the busbar away from the soft-pack battery cell after being bent and flattened. The tabs and the busbar are then welded and fixed by laser. This processing technology involves multiple steps and has high requirements for the accuracy of bending and flattening, which makes the processing technology more complicated and not conducive to automated processing. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a busbar which is convenient for welding and fixing with the pole ear, thereby helping to reduce the complexity of processing.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a busbar, including a front side plate, a rear side plate, a left side plate and a right side plate, the left side of the front side plate is fixedly connected to the left side of the rear side plate through the left side plate, the right side of the front side plate is fixedly connected to the right side of the rear side plate through the right side plate, the left side surface of the left side plate and the right side surface of the right side plate are respectively planar and used to be connected to the pole ear.

[0006] Preferably, the front side panel, the rear side panel, the left side panel and the right side panel are integrally formed.

[0007] Preferably, the left side of the front side panel is bent backward and fixedly connected to the front end surface of the left side panel, and the right side of the front side panel is bent backward and fixedly connected to the front end surface of the right side panel.

[0008] Preferably, a space is left between the left side surface of the left side panel and the front side panel, and a space is left between the right side surface of the right side panel and the front side panel.

[0009] Preferably, a first positioning strip is integrally provided on the left side surface of the left panel, and the first positioning strip extends in the up-down direction; a second positioning strip is integrally provided on the right side surface of the right panel, and the second positioning strip extends in the up-down direction.

[0010] Preferably, the rear end surface of the first positioning strip, the rear end surface of the rear side plate, and the rear end surface of the second positioning strip are located on the same plane.

[0011] Preferably, the rear side plate is provided with a plurality of strip holes, and the plurality of strip holes are evenly spaced in the up-and-down direction.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] 1. By setting the busbar into a square frame, the left side of the left plate and the right side of the right plate are respectively flat, and the pole ear of the battery cell can be attached to the left side of the left plate and the right side of the right plate for welding during welding, which makes the welding operation simple;

[0014] 2. After adopting this busbar, there is no need to bend and flatten the tabs, which can simplify the processing technology and help reduce the complexity of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 2 A top view of the utility model Figure 1 ;

[0017] Figure 3 It is a schematic diagram of the partial structure of the utility model when equipped with a battery cell;

[0018] Figure 4 The structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 5 A top view of the utility model Figure 2 .

[0020] In the figure: 1, front side panel; 2, rear side panel; 21, strip hole; 3, left side panel; 31, first positioning strip; 4, right side panel; 41, second positioning strip; 5, battery cell; 51, pole ear; 52, edge sealing; 6, missing corner. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "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.

[0023] Embodiment 1: Figures 1 to 3 As shown, a busbar includes a front side plate 1, a rear side plate 2, a left side plate 3 and a right side plate 4. The left side of the front side plate 1 is fixedly connected to the left side of the rear side plate 2 through the left side plate 3, and the right side of the front side plate 1 is fixedly connected to the right side of the rear side plate 2 through the right side plate 4. The left side surface of the left side plate 3 and the right side surface of the right side plate 4 are respectively planar and used to be connected to the pole ear 51, and the left side surface of the left side plate 3 and the right side surface of the right side plate 4 are parallel.

[0024] In this embodiment, the front side panel 1, the rear side panel 2, the left side panel 3 and the right side panel 4 are integrally formed.

[0025] When welding with the pole lugs 51 of the battery cell 5, the busbar is placed between the pole lugs 51 of the two battery cells 5, the pole lug 51 of one battery cell 5 is welded and fixed to the left side of the left plate 3, and the pole lug 51 of the other battery cell 5 is welded and fixed to the right side of the right plate 4. There is no need to bend and flatten the pole lugs 51, which can simplify the processing technology and help reduce the complexity of processing.

[0026] Embodiment 2: Figures 1 to 3 As shown, the rest of the parts are the same as those in the first embodiment, except that the left side of the front side panel 1 is bent backwards and fixedly connected to the front end face of the left side panel 3, the right side of the front side panel 1 is bent backwards and fixedly connected to the front end face of the right side panel 4, the front side panel 1, the rear side panel 2, the left side panel 3 and the right side panel 4 cooperate to form a D-shape. Compared with the square shape, the cavity formed between the four side panels is larger, which is convenient for subsequent cooperation with a larger copper rod, so as to provide a more stable supporting force through the larger copper rod, thereby improving the quality of the welding operation. Of course, the D-shaped busbar can also play a certain anti-fool effect to prevent the staff from making incorrect assembly.

[0027] When the busbar is welded with the tab 51 of the battery cell 5 , the front side plate 1 is located between the rear side plate 2 and the battery cell 5 , that is, the front side plate 1 faces the battery cell 5 .

[0028] Embodiment 3: Figures 1 to 3As shown, the rest of the parts are the same as those of the second embodiment, except that a gap is left between the left side of the left plate 3 and the front side plate 1, and a gap is left between the right side of the right plate 4 and the front side plate 1. By retaining the gap, a notch 6 is formed between the front end of the left plate 3 and the front side plate 1, and between the front end of the right plate 4 and the front side plate 1, so as to avoid interference between the busbar and the edge sealing 52 of the battery cell 5, and thus the reliability is better.

[0029] Embodiment 4: Figure 4 and Figure 5 As shown, the rest of the parts are the same as those in the first embodiment, except that a first positioning strip 31 is integrally provided on the left side surface of the left side plate 3 , and the first positioning strip 31 extends in the up-down direction.

[0030] In this embodiment, a second positioning bar 41 is integrally provided on the right side surface of the right side plate 4 , and the second positioning bar 41 extends in the up-down direction.

[0031] Furthermore, the rear end face of the first positioning strip 31, the rear end face of the rear side plate 2, and the rear end face of the second positioning strip 41 are located on the same plane. By providing the first positioning strip 31 and the second positioning strip 41, it is convenient for the staff to confirm whether the tab 51 is accurately aligned with the busbar, which helps to improve the assembly accuracy.

[0032] In this embodiment, a plurality of strip holes 21 are provided on the rear side plate 2, and the plurality of strip holes 21 are evenly spaced in the up and down directions. The strip holes 21 play a role of directional heat dissipation, and the heat generated during laser welding can be dissipated outward through the strip holes 21; a cross beam is formed between two adjacent strip holes 21, and the cross beam provides supporting force during welding.

[0033] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A busbar, characterized in that It comprises a front side plate (1), a rear side plate (2), a left side plate (3) and a right side plate (4); the left side of the front side plate (1) is fixedly connected to the left side of the rear side plate (2) via the left side plate (3); the right side of the front side plate (1) is fixedly connected to the right side of the rear side plate (2) via the right side plate (4); the left side surface of the left side plate (3) and the right side surface of the right side plate (4) are respectively planar and used for connecting to the pole lug (51).

2. A busbar according to claim 1, characterized in that The front side plate (1), the rear side plate (2), the left side plate (3) and the right side plate (4) are integrally formed.

3. A busbar according to claim 1, characterized in that The left side of the front side plate (1) is bent backwards and fixedly connected to the front end surface of the left side plate (3), and the right side of the front side plate (1) is bent backwards and fixedly connected to the front end surface of the right side plate (4).

4. A busbar according to claim 3, characterized in that A distance is left between the left side surface of the left side plate (3) and the front side plate (1), and a distance is left between the right side surface of the right side plate (4) and the front side plate (1).

5. A busbar according to claim 1, characterized in that A first positioning strip (31) is integrally provided on the left side surface of the left side plate (3), and the first positioning strip (31) extends in the up-down direction; a second positioning strip (41) is integrally provided on the right side surface of the right side plate (4), and the second positioning strip (41) extends in the up-down direction.

6. A busbar according to claim 5, characterized in that The rear end surface of the first positioning strip (31), the rear end surface of the rear side plate (2), and the rear end surface of the second positioning strip (41) are located on the same plane.

7. A busbar according to claim 1, characterized in that The rear side plate (2) is provided with a plurality of strip-shaped holes (21), and the plurality of strip-shaped holes (21) are distributed at equal intervals in the up-down direction.

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