Auxiliary soft package tab welding pressing block assembly

Abstract

The utility model relates to an auxiliary soft package tab welding press block assembly which comprises a soft package battery module, the end portion of the soft package battery module is provided with a tab piece and a press block body, the tab piece is connected with the end portion of the soft package battery module, the press block body is in a strip shape, a hollow position is arranged in the middle of the press block body, the press block body is connected on the tab piece in a pressing mode, and the press block body is connected with the soft package battery module in a pressing mode. A bolt penetrates through the end part of the pressing block body and is connected with the soft package battery module, and the welding position of the tab piece is over against the hollow position of the pressing block body. By means of the design, finger pressing is not needed, the situation that products are damaged due to the fact that the welded tabs are not tightly attached is avoided, product damage caused by manual pressing operation is reduced, automatic welding operation is adapted, and the welding quality hidden danger of the soft package tabs can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack production jigs, in particular to an auxiliary soft pack tab welding pressing block assembly. Background Art

[0002] Soft-pack batteries, also known as polymer lithium-ion batteries or aluminum-plastic film batteries, are a type of battery packaging that uses an aluminum-plastic composite film as its outer shell. Soft-pack battery modules are intermediate products between battery cells and battery packs formed by combining multiple soft-pack battery cells in series and parallel, and adding monitoring and management devices. Tabs are a component of soft-pack batteries. They are metal conductors that lead the positive and negative electrodes from the battery cells. Current soft-pack battery tabs are small in size and are inherently prone to deformation. Manually pressing them during welding is inconvenient, and excessive pressure can easily cause problems like cold solder joints, weld explosions, and weld deviation, resulting in poor weld plane consistency. Therefore, a welding jig for soft-pack battery tabs is needed. Utility Model Content

[0003] Based on this, it is necessary to provide an auxiliary soft-package tab welding block assembly to address the above problems.

[0004] A pressing block assembly for auxiliary soft-pack tab welding includes a soft-pack battery module, wherein the end of the soft-pack battery module is provided with a tab sheet and a pressing block body, the tab sheet is connected to the end of the soft-pack battery module, the pressing block body is strip-shaped, and a hollow position is provided in the middle, the pressing block body is crimped on the tab sheet, and a bolt passes through the end of the pressing block body to be connected to the soft-pack battery module, and the welding position of the tab sheet is opposite to the hollow position of the pressing block body.

[0005] Preferably, a cross bridge is provided in the middle of the hollowed-out area.

[0006] Preferably, a roller is provided in the hollowed-out area, a slide groove is provided on the inner wall of the hollowed-out area, the slide groove is provided along the length direction of the pressing block body, and both ends of the roller are movably inserted in the slide groove.

[0007] Preferably, the lower end surface of the pressing block body has frosted texture.

[0008] The benefits of this utility model are that: the use of this design eliminates the need for finger pressing, avoids the product being damaged due to the welding tabs not being tightly attached, reduces product damage caused by manual pressing operations, is suitable for automatic welding operations, and can effectively reduce the hidden dangers of soft-package tab welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a three-dimensional schematic diagram of an auxiliary soft-package tab welding pressing block assembly according to one embodiment;

[0010] Figure 2for Figure 1 A magnified schematic diagram of the middle part A;

[0011] Figure 3 It is a three-dimensional schematic diagram of the briquette body. DETAILED DESCRIPTION

[0012] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0013] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0015] like Figures 1 to 3As shown, an auxiliary soft-pack tab welding pressing block assembly includes a soft-pack battery module 100, the end of the soft-pack battery module 100 is provided with a tab sheet 101 and a pressing block body 1, the tab sheet 101 is connected with the end of the soft-pack battery module 100, the pressing block body 1 is in a strip shape, and a hollow position 11 is arranged in the middle, the pressing block body 1 is pressed on the tab sheet 101, a bolt penetrates through the end of the pressing block body 1 and is connected with the soft-pack battery module 100, and the welding position of the tab sheet 1 is opposite to the hollow position 11 of the pressing block body 1. Specifically, in the embodiment, a plurality of single soft-pack batteries are spliced to form the soft-pack battery module 100, the two ends are designed as positive and negative ends respectively, the plurality of single soft-pack batteries are connected in series and parallel through the tab sheet 101, the tab sheet 101 is in a long strip shape and has a relatively small thickness, and in the welding process, the tab sheet 101 will inevitably be deformed due to heat. The existing operation mode is to directly press manually, and the tab sheet 101 is spot-welded manually, which is complex and not suitable for automatic welding. In order to adapt to automatic welding, a pressing block body 1 is designed, the pressing block body 1 is directly fixed on the end of the soft-pack battery module 100, specifically, it is connected with the end of the single soft-pack battery one by one, the tab sheet 101 can be pressed by the pressing block body 1, so as to avoid deformation in the welding process. The middle of the pressing block body 1 is hollow, the welding position of the tab sheet 101 is exposed, which is convenient for the welding gun of the automatic welding machine to work on the welding position of the tab sheet 101, and the conductive wire is welded. The conductive wire can be used to connect the plurality of soft-pack batteries in series and parallel. By using the pressing block body 1 designed by us, the manual pressing is not needed, the product is not damaged due to poor welding of the tab sheet 101, the product damage caused by manual pressing operation is reduced, the automatic welding is adapted, and the soft-pack tab welding quality risk can be effectively reduced.

[0016] As shown in the figure, Figures 1 to 3 The middle part of the hollow position 11 is provided with a horizontal bridge 12, the horizontal bridge 12 is directly welded in the middle part of the hollow position 11, is connected with the pressing block body 1 as a whole, and separates the hollow position 11, so as to play a blocking role and avoid mutual interference when the two welding guns work synchronously.

[0017] As shown in the figure, Figure 3As shown, the hollow position 11 is provided with a roller 13, the inner wall of the hollow position 11 is provided with a sliding groove 14, the sliding groove 14 is arranged along the length direction of the pressing block body 1, and the both ends of the roller 13 are movably inserted into the sliding groove 14. Specifically, in the design, the pressing block body 1 can be designed in a splicing manner, and the splicing is convenient for assembling the roller 13. Because the to-be-welded tab sheet 101 is a metal sheet, and when the length of the tab sheet 101 is relatively long, the middle part is inflated or wrinkled due to the elastic stress of the tab sheet 101, when the bolt of the pressing block body 1 is not tightened, the operator can move the roller 13 by fingers, displace along the sliding groove 14, and smooth the tab sheet 101, and then the bolt of the pressing block body 1 is locked, because the roller 13 can displace along the sliding groove 14, when welding, the roller 13 is moved to avoid the roller 13 from blocking the welding gun operation.

[0018] Specifically, the lower end surface of the pressing block body 1 is provided with an abrasive grain, which is used for increasing the friction force when the pressing block body 1 is pressed on the tab sheet 101, and the pressing block body 1 is not easy to slip.

[0019] The above-mentioned embodiments only express several embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, a number of deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An auxiliary soft-pack tab welding pressing block assembly, comprising a soft-pack battery module (100), characterized in that: The end of the soft-pack battery module (100) is provided with a pole tab (101) and a pressing block body (1), the pole tab (101) is connected to the end of the soft-pack battery module (100), the pressing block body (1) is in a strip shape, and a hollow position (11) is provided in the middle, the pressing block body (1) is pressed onto the pole tab (101), and a bolt passes through the end of the pressing block body (1) to connect with the soft-pack battery module (100), and the welding position of the pole tab (101) is opposite to the hollow position (11) of the pressing block body (1).

2. The auxiliary soft-package tab welding pressing block assembly according to claim 1, characterized in that: A cross bridge (12) is provided in the middle of the hollowed-out position (11).

3. The auxiliary soft-package tab welding pressing block assembly according to claim 2, characterized in that: A roller (13) is provided in the hollowed-out position (11), and a slide groove (14) is provided on the inner wall of the hollowed-out position (11). The slide groove (14) is provided along the length direction of the pressing block body (1), and both ends of the roller (13) are movably inserted into the slide groove (14).

4. The auxiliary soft-package tab welding pressing block assembly according to claim 2, characterized in that: The lower end surface of the pressing block body (1) has frosted lines.

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