Stacked gate battery piece welding hold-down tool

Abstract

The utility model discloses a stacked grid battery piece welding hold-down device, which belongs to the field of photovoltaic technology and comprises a hold-down device body with a first direction, a second direction and a third direction. The arris bodies are distributed on the surface of the hold-down device body at intervals in the second direction, arc grooves are formed in the contact faces of the arris bodies and the conductive wires, and soft strips are embedded in the arc grooves; the balancing weights are distributed on the surface of the hold-down tool body at intervals in the first direction and located at the two ends of the prism, the battery piece is horizontally placed on the adsorption plate, the soft strip is aligned with the conductive wire, the hold-down tool body is pressed downwards, under the pressure of the hold-down tool body and the balancing weights, the conductive wire is tightly attached to the battery piece, full welding of the conductive wire and the battery piece is achieved, the welding process is simplified, and the production efficiency is improved. And the battery piece does not deform.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaics, in particular to a welding press for stacked grid cell sheets. Background Art

[0002] The stacked-grid battery uses a current collection layer with the same current transmission direction to replace the main grid and fine grid in the traditional battery structure. The current collection layer is a conductive layer that forms good contact with the battery surface to collect the current generated by the battery. The conductive layer is distributed in a graphic form on the positive and / or negative electrode of the battery. The collected current is discharged through conductive wires. The conductive wires are wires that form good contact with the current collection layer to discharge the current longitudinally and conduct it laterally. The wires are distributed in a graphic form on the positive and / or negative electrode of the battery. The structure in which the current collection layer is covered with conductive wires and the two form good contact is the stacked-grid structure.

[0003] The current technology for stringing stacked-grid cells is to use a cylindrical winding method to make the cell into an arc shape, and then wrap a conductive wire around it to allow the conductive wire to apply pressure to the stacked-grid cell to achieve full welding of the conductive wire and the cell. This method requires very high winding accuracy, the welding process is cumbersome, and the cell is pressed into an arc shape and is prone to deformation. Utility Model Content

[0004] The purpose of the utility model is to provide a stacked grid cell welding press to solve the above-mentioned problems existing in the prior art.

[0005] Technical solution: A stacked grid cell welding press, comprising a press body, having a first direction, a second direction and a third direction;

[0006] Prisms are distributed on the surface of the press body at intervals along the second direction, and arc grooves are provided on the contact surfaces of the prisms and the conductive wires, and soft strips are embedded in the arc grooves;

[0007] The counterweight blocks are distributed on the surface of the pressing tool body at intervals along the first direction, and the counterweight blocks are located at two ends of the prism.

[0008] Preferably, the interval between two adjacent prisms in the first direction is 8 mm to 13 mm.

[0009] Preferably, the cross-sectional shape of the arc groove in the third direction is two-thirds of an arc.

[0010] Preferably, the diameter of the arc groove is 0.5 mm to 2.0 mm.

[0011] Preferably, the diameter of the soft strip is 0.6 mm to 2.2 mm.

[0012] Preferably, the height of the counterweight block in the third direction is lower than the height of the prism in the third direction.

[0013] Preferably, the counterweight block is detachably connected to the surface of the press body, and the weight of the counterweight block is 125g~135g.

[0014] In summary, the beneficial effects of the utility model are:

[0015] 1. Place the battery cell flat on the adsorption plate, align the soft strip with the conductive wire, and press down the press body. Under the pressure of the press body and the counterweight, the conductive wire is closely attached to the battery cell to achieve full welding of the conductive wire and the battery cell, simplifying the welding process, and the battery cell will not be deformed.

[0016] 2. The soft strip contacts the conductive wire to prevent it from being damaged by bumps.

[0017] 3. The counterweight block can be detachably connected to the surface of the press body, and the pressure applied to the conductive wire can be adjusted. If the pressure is too large, the conductive wire will be deformed, and if the pressure is too small, a cold weld will occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the pressing tool provided by the utility model;

[0019] Figure 2 It is a schematic diagram of the use of the pressing tool provided by the utility model.

[0020] The accompanying drawings are marked as follows: 1. press body; 2. prism; 3. arc groove; 4. soft strip; 5. counterweight; 6. conductive wire; 7. battery cell; 8. adsorption plate. DETAILED DESCRIPTION

[0021] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described. Example 1

[0022] like Figure 1 As shown, the stacked grid cell welding press disclosed in this embodiment includes a press body 1 having a first direction, a second direction and a third direction; prisms 2, which are distributed on the surface of the press body 1 at intervals along the second direction, and the contact surface between the prism 2 and the conductive wire is provided with an arc groove 3, and the arc groove 3 is embedded with a soft strip 4; counterweights 5, which are distributed on the surface of the press body 1 at intervals along the first direction, and the counterweights 5 are located at both ends of the prism 2. The cell is placed flat on the adsorption plate, the soft strip 4 is aligned with the conductive wire, and the press body 1 is pressed down. Under the pressure of the press body 1 and the counterweights 5, the conductive wire is closely attached to the cell, so that full welding of the conductive wire and the cell is achieved, the welding process is simplified, and the cell will not be deformed.

[0023] The soft strip 4 is a silicone strip, which contacts the conductive wire to prevent the conductive wire from being damaged by collision.

[0024] The first direction refers to the long side direction of the press body 1 , the second direction refers to the short side direction of the press body 1 , and the third direction refers to the thickness direction of the press body 1 .

[0025] like Figure 1 As shown, the interval between two adjacent prisms 2 in the first direction is 8 mm to 13 mm, so that the soft strip 4 can be accurately aligned with the conductive wire.

[0026] like Figure 1 As shown, the cross-sectional shape of the arc groove 3 in the third direction is two-thirds of an arc, so that the soft strip 4 embedded in the arc groove 3 will not fall off.

[0027] like Figure 1 As shown, the diameter of the arc groove 3 is 0.5 mm to 2.0 mm, and the diameter of the soft strip 4 is 0.6 mm to 2.2 mm. The diameter of the soft strip 4 is larger than the diameter of the arc groove 3 , so that the soft strip 4 can be tightly embedded in the arc groove 3 .

[0028] like Figure 1 As shown, the height of the counterweight block 5 in the third direction is lower than the height of the prism 2 in the third direction. If the height of the counterweight block 5 in the third direction is too high, the soft strip 4 cannot contact the conductive wire, making the press unusable.

[0029] like Figure 1 As shown, the counterweight block 5 is detachably connected to the surface of the press body 1. The weight of the counterweight block 5 is 125g~135g. The counterweight block 5 is detachably connected to the surface of the press body 1. The pressure applied to the conductive wire can be adjusted. If the pressure is too great, the conductive wire will be deformed. If the pressure is too small, a cold solder joint will occur.

[0030] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A stacked grid cell welding press, characterized in that: The press comprises a pressing tool body having a first direction, a second direction and a third direction; Prisms are distributed on the surface of the press body at intervals along the second direction, and arc grooves are provided on the contact surfaces of the prisms and the conductive wires, and soft strips are embedded in the arc grooves; The counterweight blocks are distributed on the surface of the pressing tool body at intervals along the first direction, and the counterweight blocks are located at two ends of the prism.

2. A stacked grid cell welding press according to claim 1, characterized in that: The interval between two adjacent prisms in the first direction is 8 mm to 13 mm.

3. The stacked grid cell welding press according to claim 1, characterized in that: The cross-sectional shape of the arc groove in the third direction is two-thirds of an arc.

4. A stacked grid cell welding press according to claim 3, characterized in that: The diameter of the arc groove is 0.5mm~2.0mm.

5. The stacked grid cell welding press according to claim 1, characterized in that: The diameter of the soft strip is 0.6 mm to 2.2 mm.

6. The stacked grid cell welding press according to claim 1, characterized in that: The height of the counterweight block in the third direction is lower than the height of the prism in the third direction.

7. The stacked grid cell welding press according to claim 6, characterized in that: The counterweight block is detachably connected to the surface of the pressing tool body, and the weight of the counterweight block is 125g~135g.

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