A device for flattening conductive wires of a stacked gate battery

Abstract

This utility model relates to the field of photovoltaic technology, specifically to a device for flattening conductive wires in stacked-grid solar cells. The device includes a support component, a power component, a transmission component, and a pressing component. The support component has a positioning structure to achieve precise positioning of the solar cells. The power component drives the transmission component to move the pressing component vertically. The pressing component presses the conductive wires with a pressing element, and an elastic buffer on the outside of the pressing element ensures that the conductive wires are fully flattened and of uniform height. This device effectively increases the contact area between the conductive wires and the connecting strips, reduces welding difficulty, and improves welding yield and solar cell yield. It is suitable for the production of stacked-grid solar cells.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, specifically to a device for flattening conductive wires in a stacked grid cell. Background Technology

[0002] The front and back of the stacked battery are densely covered with triangular conductive wires. The conductive wires on the back are left to be flush with the edge of the battery, while the conductive wires on the front are left to be about 2mm long on each side. Metal connecting strips need to be welded perpendicular to the direction of the conductive wires as electrodes to realize the stacking and series connection of battery cells to form a module.

[0003] However, the existing process has problems in the welding process of conductive wires and connecting strips. The contact area between the connecting strip and the closely packed triangular conductive wires is small, the size and shape of each conductive wire are different, and more than 100 conductive wires need to be welded well at the same time. If one of them is not welded well, the entire battery will be scrapped. In order to improve the welding yield and battery yield, the triangular conductive wires with the extended welding part need to be flattened.

[0004] In view of this, in order to overcome the above-mentioned technical problems, this utility model designs and develops a device for flattening the conductive wires of stacked grid batteries, which solves the above-mentioned technical problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model proposes a device for flattening conductive wires in stacked grid batteries. This device solves the technical problems in the manufacturing process of stacked grid batteries, such as small contact area when welding connecting strips and closely packed triangular conductive wires, differences in the size and shape of each conductive wire, and the need for simultaneous and good welding of more than one hundred closely packed conductive wires. If a single conductive wire is not welded well, the entire battery will be scrapped, resulting in high welding difficulty, low welding yield, and low battery cell yield.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a device for flattening conductive wires of stacked grid battery, comprising: a bearing component for positioning and fixing battery cells, a power component for providing driving force, a transmission component for realizing power transmission and direction conversion, and a pressing component for pressing conductive wires. The supporting component is provided with a positioning structure for positioning the battery cell to limit the position of the battery cell during the flattening process; The power component is connected to the transmission component, providing the transmission component with motion power; The end of the transmission component away from the power component is connected to the pressing component, which is used to transmit the power of the power component to the pressing component and drive the pressing component to move in a direction perpendicular to the bearing component. The pressing assembly includes a mounting base, and the mounting base has multiple pressing components inside. The multiple pressing components are used to press the conductive wires of the long welding part of the stacked grid battery. The pressing components have elastic buffers on their outer sides.

[0007] As a preferred embodiment of this utility model, the supporting component is an adsorption platform with a cavity inside; the positioning structure is a limiting step formed on the adsorption platform.

[0008] As a preferred technical solution of this utility model, the adsorption platform is provided with a ventilation adsorption structure, which is used to generate adsorption force after the battery cell is placed on the adsorption platform, and further fix the battery cell; the ventilation adsorption structure includes: an air intake hole opened on one side of the adsorption platform, a through hole opened on the surface of the adsorption platform, and an existing vacuum pump.

[0009] In a preferred embodiment of this utility model, the power component is a cylinder, the transmission component is a lever mechanism, the output end of the cylinder is connected to one end of the lever mechanism, and the other end of the lever mechanism is connected to the pressing component.

[0010] As a preferred technical solution of this utility model, it also includes a guide component for guiding the movement trajectory of the pressing component. The guide component is a slider mechanism. The lever mechanism is connected to the pressing component through the slider mechanism, so that the pressing component moves up and down along a preset trajectory.

[0011] As a preferred embodiment of this utility model, the mounting base is a pressure needle mounting plate, the pressing component is a T-shaped pressure needle, and the elastic buffer component is a spring; each T-shaped pressure needle is fixed on the pressure needle mounting plate, and a corresponding spring is sleeved on the outer side of each T-shaped pressure needle.

[0012] As a preferred technical solution of this utility model, each of the T-shaped pressure pins is arranged alternately along the direction parallel to the conductive wires of the stacked grid battery.

[0013] As a preferred technical solution of this utility model, each T-shaped pressure pin corresponds to pressing 2-3 triangular conductive wires of the stacked grid battery.

[0014] As a preferred embodiment of this utility model, the spring is used to provide auxiliary elastic force for the T-shaped pressure needle to press the triangular conductive wire, ensuring that the T-shaped pressure needle fully flattens the conductive wire.

[0015] As a preferred embodiment of this invention, the adsorption platform is made of alloy material.

[0016] In summary, this utility model has the following beneficial effects: This flattening device for conductive wires of stacked grid cells achieves precise positioning of the cells through the limiting steps of the adsorption platform. A cylinder-driven lever pushes a pressing assembly composed of multiple spring-loaded T-shaped pressure pins, effectively flattening the densely packed triangular conductive wires of the long welding section of the stacked grid cells. This significantly increases the contact area between the conductive wires and the connecting strips, while ensuring that all conductive wires are at the same height. This effectively solves the problem of poor contact that easily occurs during the welding of the connecting strips of stacked grid cells, reduces the welding difficulty, avoids incomplete welding and desoldering, and significantly improves the welding yield of the connecting strips and the yield of the stacked grid cells. This lays a solid foundation for the subsequent stable series connection of stacked grid cells into modules and for ensuring the performance of photovoltaic modules. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the device for flattening the conductive wires of a stacked grid battery provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of a stacked grid solar cell fabricated according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the specific structure of the adsorption platform provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the pressing assembly provided in an embodiment of the present invention; Figure 5 This is a partial sectional view of the internal structure of the pressing assembly provided in this embodiment of the utility model; Figure 6 This is a schematic diagram of the T-shaped pressure needle provided in an embodiment of this utility model; Figure 7 This is a schematic diagram of the battery cell provided in an embodiment of the present invention; Figure 8 This is provided by the embodiment of the present utility model. Figure 7 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Adsorption platform; 2. Lever mechanism; 3. Cylinder; 4. Pressing assembly; 41. Pressing needle mounting plate; 42. T-shaped pressing needle; 43. Spring; 5. Limiting step; 61. Suction hole; 62. Through hole; 7. Sliding mechanism; 8. Battery cell; 9. Conductive wire. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0023] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] like Figure 1-8As shown, it includes: a support assembly for positioning and fixing the battery cell 8, a power assembly for providing driving force, a transmission assembly for realizing power transmission and direction conversion, and a pressing assembly 4 for pressing the conductive wire 9; the support assembly is provided with a positioning structure for positioning the battery cell 8 to limit the position of the battery cell 8 during the flattening process; the power assembly is connected to the transmission assembly to provide motion power to the transmission assembly; the end of the transmission assembly away from the power assembly is connected to the pressing assembly 4 to transmit the power of the power assembly to the pressing assembly 4 and drive the pressing assembly 4 to move in a direction perpendicular to the support assembly; the pressing assembly 4 includes a mounting base, and multiple pressing members are provided inside the mounting base. The multiple pressing members are used to press the conductive wire 9 of the long welded part of the stacked grid battery, and an elastic buffer is provided on the outside of the pressing members.

[0025] The supporting component is an adsorption platform 1, which has an internal cavity and is made of alloy material. The positioning structure is a limiting step 5 on the adsorption platform 1. The adsorption platform 1 has a ventilation adsorption structure for generating adsorption force after the battery cell 8 is placed on it, further securing the battery cell 8. The ventilation adsorption structure includes: an air intake hole 61 on one side of the adsorption platform 1, a through hole 62 on the surface of the adsorption platform 1, and an existing vacuum pump. The power component is a cylinder 3, and the transmission component is a lever mechanism 2. The output end of the cylinder 3 is connected to one end of the lever mechanism 2, and the other end of the lever mechanism 2 is connected to the pressing component 4.

[0026] A guide component, a slider mechanism 7, is used to guide the movement trajectory of the pressing assembly 4. The lever mechanism 2 is connected to the pressing assembly 4 through the slider mechanism 7, causing the pressing assembly 4 to move up and down along a preset trajectory. The mounting base is a pressure needle mounting plate 41, the pressing component is a T-shaped pressure needle 42, and the elastic buffer is a spring 43. Each T-shaped pressure needle 42 is fixed on the pressure needle mounting plate 41, and a corresponding spring 43 is sleeved on the outer side of each T-shaped pressure needle 42. The T-shaped pressure needles 42 are arranged alternately in a direction parallel to the conductive wires 9. Each T-shaped pressure needle 42 presses 2-3 conductive wires 9. The spring 43 provides auxiliary elastic force for the T-shaped pressure needles 42 to press the conductive wires 9, ensuring that the T-shaped pressure needles 42 fully flatten the conductive wires 9.

[0027] In this embodiment, the working principle of the conductive wire 9 flattening device of the stacked grid battery is based on the cooperation of mechanical transmission and precise positioning, combined with the attached... Figure 1 (Schematic diagram of the device for flattening conductive wires in a stacked grid battery) Figure 2 (Schematic diagram of the completed stacked-grid solar cell) Figure 3 (Schematic diagram of the specific structure of the adsorption platform) and Figure 4 (Schematic diagram of the pressing assembly), as follows: First, position and fix the battery cell 8, referring to... Figure 1The structure shown involves placing a stacked battery cell 8 (with conductive wires 9 densely distributed on its front and back sides, with each side of the front conductive wire 9 leaving a length of approximately 2mm and the back conductive wire 9 leaving a length flush with the edge of the battery) without welded connecting strips onto the adsorption platform 1. The adsorption platform 1 utilizes a preset limiting step 5 to achieve precise positioning of the battery cell 8, preventing the battery cell 8 from shifting during the subsequent flattening process. Subsequently, air is extracted from the ventilated adsorption structure of the adsorption platform 1 to generate adsorption force, which firmly fixes the battery cell 8 onto the adsorption platform 1, ensuring that the position of the battery cell 8 does not change during the subsequent pressing action.

[0028] The process of evacuating the air in the ventilated adsorption structure is as follows: using an existing vacuum pump, connect the air inlet of the vacuum pump to the air inlet 61, turn on the vacuum pump to evacuate the inside of the adsorption platform 1 to a vacuum; at this time, the adsorption force generated inside the adsorption platform 1 will firmly fix the battery cell 8 on the adsorption platform 1 through the through hole 62 on the upper surface of the adsorption platform 1.

[0029] Next, the control cylinder 3 operates, and the cylinder 3 outputs power to drive the lever mechanism 2 connected to it. Under the action of power, the lever mechanism 2 rotates around its own fulcrum, thereby driving the pressing component 4 (connected via the slider mechanism 7, which guides the pressing component 4 to move along a preset trajectory) away from the end connected to the cylinder 3 to move downward in a direction perpendicular to the adsorption platform 1; during this process, the structure of the pressing component 4 is as follows: Figure 4-5 It consists of multiple T-shaped pressure pins 42 fixed on the pressure pin mounting plate 41. Each T-shaped pressure pin 42 is arranged alternately in a direction parallel to the conductive wire 9, and each T-shaped pressure pin 42 is fitted with a spring 43 on its outer side. As the pressing assembly 4 is pressed down, the T-shaped pressure pins 42 gradually approach the conductive wire 9 left by the battery cell 8.

[0030] Finally, the conductive wire 9 is flattened. When the pressing assembly 4 continues to press down until the T-shaped pressure needle 42 contacts the extended conductive wire 9 of the battery cell 8, the T-shaped pressure needle 42 applies pressure to the conductive wire 9 under the pressure transmitted by the lever mechanism 2. Since a single T-shaped pressure needle 42 corresponds to pressing 2-3 conductive wires 9, and the spring 43 on the outside of the T-shaped pressure needle 42 can provide buffering and auxiliary elasticity during the pressing process, it ensures that each conductive wire 9 can be fully flattened, and at the same time, the height of all flattened conductive wires 9 is consistent. After the flattening of the conductive wire 9 is completed, the control cylinder 3 stops outputting power and resets, the lever mechanism 2 drives the pressing assembly 4 to move upward and reset, closes the ventilation adsorption structure of the adsorption platform 1, and removes the battery cell 8 after flattening the conductive wire 9, so that the subsequent connecting strip welding process can be carried out.

[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A device for flattening conductive wires in a stacked-grid battery, characterized in that, include: The support assembly for positioning and fixing the battery cell (8), the power assembly for providing driving force, the transmission assembly for realizing power transmission and direction conversion, and the pressing assembly (4) for pressing the conductive wire (9). The carrier component is provided with a positioning structure for positioning the battery cell (8) to limit the position of the battery cell (8) during the flattening process; The power component is connected to the transmission component, providing the transmission component with motion power; The end of the transmission component away from the power component is connected to the pressing component (4) to transmit the power of the power component to the pressing component (4) and drive the pressing component (4) to move in a direction perpendicular to the bearing component; The pressing assembly (4) includes a mounting base, and the mounting base is provided with multiple pressing components inside. The multiple pressing components are used to press the conductive wires (9) of the long welding part of the stacked grid battery. The pressing components are provided with elastic buffers on the outside.

2. The device for flattening conductive wires in a stacked grid battery according to claim 1, characterized in that: The supporting component is an adsorption platform (1), and the adsorption platform (1) has a cavity inside; the positioning structure is a limiting step (5) opened on the adsorption platform (1).

3. The device for flattening conductive wires in a stacked-grid battery according to claim 2, characterized in that: The adsorption platform (1) is provided with a ventilation adsorption structure, which is used to generate adsorption force after the battery cell (8) is placed on the adsorption platform (1) to further fix the battery cell (8); the ventilation adsorption structure includes: an air intake hole (61) opened on one side of the adsorption platform (1), a through hole (62) opened on the surface of the adsorption platform (1) and an existing vacuum pump.

4. The device for flattening conductive wires in a stacked grid battery according to claim 1, characterized in that: The power component is a cylinder (3), the transmission component is a lever mechanism (2), the output end of the cylinder (3) is connected to one end of the lever mechanism (2), and the other end of the lever mechanism (2) is connected to the pressing component (4).

5. The device for flattening conductive wires in a stacked grid battery according to claim 4, characterized in that: It also includes a guide component for guiding the movement trajectory of the pressing component (4), the guide component being a slider mechanism (7), the lever mechanism (2) being connected to the pressing component (4) through the slider mechanism (7), so that the pressing component (4) moves up and down along a preset trajectory.

6. The device for flattening conductive wires in a stacked-grid battery according to claim 1, characterized in that: The mounting base is a pressure needle mounting plate (41), the pressing component is a T-shaped pressure needle (42), and the elastic buffer component is a spring (43); each T-shaped pressure needle (42) is fixed on the pressure needle mounting plate (41), and a corresponding spring (43) is sleeved on the outside of each T-shaped pressure needle (42).

7. The device for flattening conductive wires in a stacked-grid battery according to claim 6, characterized in that: Each of the T-shaped pressure pins (42) is arranged alternately in a direction parallel to the conductive wire (9).

8. The device for flattening conductive wires in a stacked grid battery according to claim 6, characterized in that: Each of the T-shaped pressure needles (42) corresponds to pressing 2-3 conductive wires (9).

9. The device for flattening conductive wires in a stacked-grid battery according to claim 6, characterized in that: The spring (43) is used to provide auxiliary elastic force for the T-shaped pressure needle (42) to press the conductive wire (9), ensuring that the T-shaped pressure needle (42) fully flattens the conductive wire (9).

10. The device for flattening conductive wires in a stacked grid battery according to claim 2, characterized in that: The adsorption platform (1) is made of alloy material.

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