JP-2026514363-A - Dummy assembly

JP2026514363AJP 2026514363 AJP2026514363 AJP 2026514363AJP-2026514363-A

Abstract

The object of this application is to provide a dummy assembly that can provide an environment for testing weld strength similar to that of an actual product, and that can minimize the waste generated while testing weld strength. Furthermore, this application provides a dummy assembly that can flexibly respond to differences in the standards required for each product. A dummy assembly can be provided that includes a first body part to which a first busbar assembly is attached, which includes a first lead tab dummy and a first busbar provided to be welded to the first lead tab dummy at least in part; a second body part to which a second busbar assembly is attached, which includes a second lead tab dummy and a second busbar provided to be welded to the second lead tab dummy at least in part; and a distance adjustment part for adjusting the distance between the first body part and the second body part.

Inventors

スンヒョン・チェ
ジウォン・ハム

Assignees

エルジーエナジーソリューションリミテッド

Dates

Publication Date: 20260511
Application Date: 20240710
Priority Date: 20231108

Claims (20)

In a dummy assembly for testing the weld strength between the lead tabs and busbars of a battery cell, A first body portion to which a first lead tab dummy and a first busbar assembly are mounted, wherein the first busbar assembly includes a first busbar provided to be welded to the first lead tab dummy in at least a portion thereof, A second body portion to which a second lead tab dummy and a second busbar assembly are mounted, wherein the second busbar assembly includes a second busbar provided to be welded to the second lead tab dummy in at least a portion thereof, A dummy assembly including a distance adjustment unit for adjusting the distance between the first body portion and the second body portion.
The dummy assembly according to claim 1, wherein the distance adjustment unit includes a drive unit for moving the first body portion or the second body portion.
The aforementioned drive unit is A first drive member connected to the first body portion, A second drive member connected to the second body portion, The dummy assembly according to claim 2, comprising a rotating member connected to the first drive member and the second drive member and provided to rotate.
The rotating member is mutually fixed to the first drive member and the second drive member. The first drive member is fastened to the first body portion so as to be rotatable, The dummy assembly according to claim 3, wherein the second drive member is fastened to the second body portion so as to be able to rotate and translate.
The dummy assembly according to claim 4, wherein the first drive member and the second drive member are composed of a single shaft.
The dummy assembly according to claim 4, wherein the first drive member has a protruding rib and the second drive member has a screw.
The first body portion includes a first body connecting member provided so as to face the surface on which the first busbar assembly is mounted, and the second body portion includes a second body connecting member provided so as to face the surface on which the second busbar assembly is mounted. The dummy assembly according to claim 3, wherein the first body connecting member and the second body connecting member face each other.
The dummy assembly according to claim 2, wherein the distance adjustment unit further includes a guide unit that guides the movement by the drive unit.
The first body portion includes a first body connecting member provided so as to face the surface on which the first busbar assembly is mounted, and the second body portion includes a second body connecting member provided so as to face the surface on which the second busbar assembly is mounted. The dummy assembly according to claim 8, wherein the distance adjustment unit is connected to the first body connecting member and the second body connecting member.
The distance adjustment unit includes a plurality of guide units, The dummy assembly according to claim 9, wherein the drive unit is provided between the plurality of guide units.
The dummy assembly according to any one of claims 1 to 10, wherein the first body portion includes a first body hole provided for mounting the first lead tab dummy, and the second body portion includes a second body hole provided for mounting the second lead tab dummy.
The first body portion includes a first body fixing portion provided for mounting the first busbar assembly, and the second body portion includes a second body fixing portion provided for mounting the second busbar assembly. The dummy assembly according to any one of claims 1 to 10, wherein the first busbar assembly includes a first busbar assembly fixing portion provided to be coupled to or uncoupled from the first body fixing portion, and the second busbar assembly includes a second busbar assembly fixing portion provided to be coupled to or uncoupled from the second body fixing portion.
The first busbar assembly includes a first busbar frame that supports the first busbar and has a first busbar assembly fixing portion on one side. The second busbar assembly includes a second busbar frame that supports the second busbar and has a second busbar assembly fixing portion on one side. The dummy assembly according to claim 12, wherein the first busbar frame includes a first groove guide portion on at least one side, and the second busbar frame includes a second groove guide portion on at least one side.
The system further includes a position fixing part that maintains the distance between the first body part and the second body part, The dummy assembly according to any one of claims 1 to 10, wherein the position fixing portion is combined with the first body portion and the second body portion while a fixing member is passed through it.
The position fixing portion includes a body member and a plurality of fixing holes which are through holes provided in the body member. The dummy assembly according to claim 14, wherein some of the plurality of fixing holes are first fixing holes provided to be combined with the first body portion, and the other portion are second fixing holes provided to be combined with the second body portion.
The first body portion includes a first groove provided at one end, and the second body portion includes a second groove provided at one end and facing the first groove. The dummy assembly according to claim 15, wherein the position fixing portion is fixed to the first groove and the second groove.
The distance adjustment unit moves at least one of the first body portion and the second body portion, The dummy assembly according to claim 16, wherein at least one of the first groove and the second groove to which the position fixing portion is secured includes an extension space which is a space that extends further in the direction in which the first body portion or the second body portion moves.
The aforementioned fixing member is a plurality of members, The dummy assembly according to claim 16, wherein some of the plurality of fixing members are combined with a first connecting hole provided in the first groove that penetrates the first fixing hole, and other parts are combined with a second connecting hole provided in the second groove that penetrates the second fixing hole.
At least some of the aforementioned multiple fixing holes are buffer holes, The dummy assembly according to claim 15, wherein the buffer hole includes a buffer space provided so that a part of the fixing member, which penetrates the position fixing portion and is semi-connected to the first body portion or the second body portion, can move.
The distance adjustment unit moves at least one of the first body portion and the second body portion, The dummy assembly according to claim 19, wherein the buffer space is provided such that a part of the semi-connected fixing member can move in the direction in which the first body portion or the second body portion moves.

Description

Mutual citation with related applications This application claims priority under Republic of Korea Patent Application No. 10-2023-0153864, filed on November 8, 2023, and all content contained in the literature of the said Republic of Korea Patent Application is incorporated herein by reference. Technical field This application relates to a dummy assembly that may be applied in the battery field. In recent years, demand for mobile devices such as smartphones, tablet PCs, and wireless earphones has increased. Furthermore, with the full-scale development of electric vehicles, energy storage batteries, robots, and satellites, research into high-performance rechargeable batteries capable of repeated charging and discharging as an energy source is actively progressing. Currently, commercially available rechargeable batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium-ion batteries. Among these, lithium-ion batteries have several advantages over nickel-series batteries, including minimal memory effect, flexible charging and discharging, very low self-discharge rates, and high energy density. On the other hand, to generate high-power electrical energy, a secondary battery contains multiple battery cells, which can be electrically connected in series or parallel. Here, the electrical connection of the battery cells can be achieved by welding the lead tabs and busbars of the battery cells. Since high-power electrical energy can be generated through the electrical connections of battery cells, it is important to evaluate whether there are any abnormalities in the welding between the lead tabs and busbars of the battery cells. To evaluate whether there are any abnormalities in the welding, a method can be used to inspect the welding strength between the lead tabs and busbars of the battery cells. Generally, the welding strength is inspected by measuring the tensile strength of the welded area between the lead tabs and busbars. However, as mentioned above, after inspecting the weld strength, the battery cells and busbars are disposed of, resulting in a large amount of waste. To mitigate this problem, a dummy module was used to inspect the weld strength. As the applications of rechargeable batteries gradually expanded, differences in the required specifications for these batteries arose across various fields. To accommodate these differences, it became necessary to separately manufacture dummy modules tailored to each specific standard. The figures shown in this application are illustrative, and the ratios of width, length, or thickness (or height) of each component are for illustrative purposes only and may differ from actual values. Furthermore, in the coordinate system shown in the drawings, the axes may be perpendicular to each other, the direction indicated by the arrow may be the positive direction, and the direction directly opposite to the direction indicated by the arrow (rotated 180 degrees) may be the negative direction. This figure illustrates at least a portion of a dummy assembly according to one embodiment of this application.This is a perspective view showing at least a portion of a dummy assembly according to one embodiment of this application.This is an exploded perspective view showing at least a portion of a dummy assembly according to one embodiment of this application.This is an exploded perspective view showing at least a portion of a dummy assembly according to one embodiment of this application.This is an exploded perspective view showing at least a portion of a dummy assembly according to one embodiment of this application.This is a perspective view showing at least a portion of a dummy assembly according to one embodiment of this application.This is an exploded perspective view showing at least a portion of a dummy assembly according to one embodiment of this application.This is an enlarged view of a portion of a dummy assembly according to one embodiment of this application.This is a plan view (XY plane) illustrating at least a portion of a position-fixing part according to one embodiment of this application.This is an exploded view showing a dummy assembly according to one embodiment of this application, with the position fixing part disassembled.This is an enlarged view of a portion of a dummy assembly according to one embodiment of this application. Prior to the detailed description of this application, terms and words used herein and in the claims may not be construed to be limited to their ordinary or dictionary meanings. Furthermore, the inventors must interpret them in a sense and concept consistent with the technical idea of the invention, based on the principle that terms can be appropriately defined as concepts in order to best describe their invention. The embodiments described herein and the configurations illustrated in the drawings represent only the most preferred embodiments of this application and may not represent all