KR-102963837-B1 - APPARATUS AND METHOD OF MANUFACTURING BATTERY MODULE

KR102963837B1KR 102963837 B1KR102963837 B1KR 102963837B1KR-102963837-B1

Abstract

A battery module manufacturing device according to one embodiment of the present invention includes a guide plate that surrounds a battery cell stack formed by stacking a plurality of battery cells on the left and right sides, and the guide plate includes a main body portion that contacts the battery cell stack and an insert portion that is connected to one end of the main body portion and is bent and protruded into the battery cell stack, and the battery cell stack is inserted into a module frame with an open top by the insert portion.

Inventors

정기택
박준규

Assignees

주식회사 엘지에너지솔루션

Dates

Publication Date: 20260511
Application Date: 20200820

Claims (10)

It includes guide plates that wrap around the outermost edge of a battery cell stack formed by stacking multiple battery cells from the left and right sides. A battery module manufacturing device in which the guide plate comprises a main body portion in contact with the battery cell stack, an insert portion connected to one end of the main body portion and bent inward and downward toward the battery cell stack, and the battery cell stack is inserted into the interior of a frame member with an open top by the insert portion.
In paragraph 1, The above frame member includes a bottom portion and two side portions facing each other, and The above insertion part includes a first insertion part and a second insertion part corresponding to each of the two side parts, and A battery module manufacturing device in which the distance between the first insertion end and the second insertion end is shorter than the distance between the side portions of the frame member.
In paragraph 2, The above guide plate is a battery module manufacturing device formed of a metal material or an insulating member.
In Paragraph 3, The above guide plate is a battery module manufacturing device formed of metal aluminum or reinforced plastic.
In paragraph 1, A battery module manufacturing device further comprising a base portion connected to the other end portion of the insertion portion located opposite to the end portion of the insertion portion connected to the main body portion.
In paragraph 1, A battery module manufacturing device further comprising a compression pad located between the guide plate and the battery cell stack.
In paragraph 6, A battery module manufacturing device in which the insert portion is bent and protrudes in the direction in which the compression pad is located, and the horizontal distance of the protruding insert portion is equal to or shorter than the thickness of the compression pad.
The method includes the step of inserting the battery cell stack into a frame member with an open top using guide plates that wrap around the outermost edge of the battery cell stack from the left and right sides. The above frame member includes a bottom portion and two side portions facing each other, and the guide plate includes a main body portion in contact with the battery cell stack and an insert portion connected to one end of the main body portion and bent inward and downward toward the battery cell stack. A method for manufacturing a battery module in which the step of inserting the battery cell stack is such that the inclined surface of the insertion part first touches the side part of the frame member while inserting the battery cell stack.
In paragraph 8, The above insertion part includes a first insertion part and a second insertion part corresponding to each of the two side parts, and A method for manufacturing a battery module in which, in the step of inserting the battery cell stack, the distance between the end of the first insertion part and the end of the second insertion part is shorter than the distance between the side parts of the frame member.
In paragraph 8, A method for manufacturing a battery module further comprising the step of removing the guide plate by sliding it along at least one of the open front shear direction and rear shear direction of the frame member.

Description

Apparatus and Method of Manufacturing Battery Module The present invention relates to a battery module manufacturing apparatus and a battery module manufacturing method, and more specifically, to a battery module manufacturing apparatus and a battery module manufacturing method with improved processability. Secondary batteries, which possess electrical characteristics such as high energy density and high applicability across product categories, are widely applied not only to portable devices but also to electric vehicles or hybrid vehicles powered by electric sources, and power storage devices. These secondary batteries are attracting attention as a new energy source for enhancing eco-friendliness and energy efficiency, not only for the primary advantage of drastically reducing the use of fossil fuels but also because they generate no by-products from energy use. While small mobile devices use one or two or three battery cells per device, medium-to-large devices such as automobiles require high output and large capacity. Therefore, medium-to-large battery modules in which multiple battery cells are electrically connected are used. Since it is desirable for medium-to-large battery modules to be manufactured with the smallest possible size and weight, prismatic batteries and pouch-type batteries, which can be stacked with high integration density and have a low weight-to-capacity ratio, are mainly used as battery cells for medium-to-large battery modules. Meanwhile, the battery module may include a frame member that houses the battery cell stack in an internal space, with the front and rear sides open, to protect the cell stack from external shock, heat, or vibration. FIG. 1 is a perspective view showing a battery module having a conventional monoframe. Referring to FIG. 1, the battery module may include a battery cell stack (12) formed by stacking a plurality of battery cells (11), a monoframe (20) with an open front and rear to cover the battery cell stack (12), and an end plate (60) covering the front and rear of the monoframe (20). To form such a battery module, horizontal assembly is required so that the battery cell stack (12) is inserted into the open front or rear of the monoframe (20) along the x-axis direction as indicated by the arrow in FIG. 1. However, sufficient clearance must be secured between the battery cell stack (12) and the monoframe (20) so that this horizontal assembly can be stable. Here, clearance refers to a gap created by fitting, etc. If the clearance is small, damage to the parts may occur during the horizontal assembly process. Therefore, the height of the monoframe (20) must be designed to be large, taking into account the maximum height of the battery cell stack (12) and the assembly tolerance during the insertion process, which may result in unnecessarily wasted space. Although a guide film is sometimes used to minimize such assembly tolerance, there is a problem in that the guide film breaks during the insertion process or the cost of replacement increases. FIG. 1 is a perspective view showing a battery module having a conventional monoframe. FIG. 2 is an exploded perspective view showing a battery module according to one embodiment of the present invention. FIG. 3 is a drawing showing a battery module manufacturing apparatus and a battery module manufacturing method according to a comparative example of the present invention. FIG. 4 is a drawing showing a battery module manufacturing apparatus and a battery module manufacturing method according to one embodiment of the present invention. Figure 5 is a drawing showing a modified example of the battery module manufacturing device of Figure 4. Figure 6 is a cross-sectional view taken along the cutting line A-A' of Figure 2. Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification. Furthermore, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, and thus the present invention is not necessarily limited to what is illustrated. Thicknesses have been enlarged in the drawings to clearly represent various layers and regions. Additionally, for convenience of explanation, the thickness of some layers and regions has been exaggerated in the drawings. Furthermore, when a part such as a layer, membrane, region, or plate is said to be "on" or "on" another part, this includes not only the case where it is "directly above" the other part, but also the case where there is another part in between. Conversely, when a