KR-102963833-B1 - BATTERY MODULE AND BATTERY PACK INCLUDING THE SAME

KR102963833B1KR 102963833 B1KR102963833 B1KR 102963833B1KR-102963833-B1

Abstract

A battery module according to one embodiment of the present invention comprises a battery cell stack having a plurality of battery cells stacked thereon, a busbar frame located at least one end of the battery cell stack, a module frame accommodating a cell block including the battery cell stack and the busbar frame, an end plate covering the front and rear surfaces of the cell block and coupled to the module frame, and an insulating cover located between the end plate and the battery cell stack, wherein the insulating cover comprises a first insulating cover and a second insulating cover, the first insulating cover covers a first busbar coupled to the busbar frame, and the second insulating cover covers a second busbar coupled to the busbar frame.

Inventors

정세윤
이종영
오종렬
이백산

Assignees

주식회사 엘지에너지솔루션

Dates

Publication Date: 20260511
Application Date: 20201130

Claims (10)

A battery cell stack having multiple battery cells stacked thereon, A busbar frame located at least one end of the above-mentioned battery cell stack, A module frame accommodating a cell block including the above battery cell stack and the above busbar frame, An end plate covering the front and rear surfaces of the cell block and coupled to the module frame, and It includes an insulating cover located between the end plate and the battery cell stack, The above insulating cover includes a first insulating cover and a second insulating cover, and A battery module in which the first insulating cover covers the front and side of a first busbar coupled to the busbar frame, and the second insulating cover covers the front and side of a second busbar coupled to the busbar frame.
In Paragraph 1, The above-mentioned first busbar is a battery module having a larger area than the above-mentioned second busbar.
In paragraph 2, The above second busbar is a battery module that is a terminal busbar.
In Paragraph 3, The above insulating cover further includes a third insulating cover, and the third insulating cover is a battery module located at the bottom of a protrusion formed at one end of the terminal busbar.
In Paragraph 1, A battery module that blocks a short circuit between the first busbar and the second busbar by having the first insulating cover and the second insulating cover each shield the space between the first busbar and the second busbar and the first busbar and the second busbar.
In Paragraph 1, The first insulating cover and the second insulating cover are battery modules coupled to the busbar frame.
In paragraph 6, The above-mentioned first insulating cover and the above-mentioned second insulating cover are each connected to the busbar frame using an adhesive, forming a battery module.
In paragraph 6, The above-mentioned first insulating cover and the above-mentioned second insulating cover are each connected to the busbar frame by a fastening member, forming a battery module.
In Paragraph 1, A battery module in which the first insulating cover and the second insulating cover are joined to the end plate by an adhesive.
A battery pack including a battery module according to paragraph 1.

Description

Battery module and battery pack including the same The present invention relates to a battery module and a battery pack including the same, and more specifically, to a battery module having a short-circuit prevention structure between busbars and a battery pack including the same. Rechargeable batteries are attracting significant attention as an energy source for various product categories, including mobile devices and electric vehicles. As a promising energy resource capable of replacing conventional products that use fossil fuels, these batteries are gaining prominence as an eco-friendly energy source because they do not generate byproducts during use. Recently, with the increasing need for high-capacity secondary battery structures, including their utilization as energy storage sources, there is a growing demand for battery packs with a multi-module structure that aggregates battery modules in which multiple secondary batteries are connected in series or parallel. Meanwhile, when configuring a battery pack by connecting multiple battery cells in series or parallel, it is common practice to configure a battery module consisting of at least one battery cell and to configure the battery pack by adding other components using this at least one battery module. This battery module includes a battery cell stack in which a plurality of battery cells are stacked, a module frame that accommodates the battery cell stack, and a busbar frame that covers the front and rear surfaces of the battery cell stack. Figure 1 is a diagram showing a conventional battery module structure. Referring to FIG. 1, a conventional battery module may include a module frame (20) that accommodates a battery cell stack, a busbar frame (30) that covers the front and rear surfaces of the battery cell stack, a plurality of busbars (40) mounted on the outer surface of the busbar frame, and a partition (50) that protrudes from the busbar frame (30) and partitions the plurality of busbars (40). At this time, only one partition (50) is formed between adjacent busbars (40) among the multiple busbars, and the spacing between the busbars (40) can be formed very narrowly. In addition, the spacing between the module frame bottom part (21) and the busbars (40) can also be formed very narrowly. Inside the battery module, moisture generation and electrolyte leakage from the cells can occur. These liquids can corrode the busbars, causing deposits between them to connect and potentially lead to short circuits. If a short circuit occurs, the risk of the battery module igniting increases, potentially compromising safety. Consequently, a busbar and busbar frame structure capable of preventing short circuits is essential. Figure 1 is a diagram showing a conventional battery module structure. FIG. 2 is a perspective view showing a battery module according to one embodiment of the present invention. FIG. 3 is a partial perspective view of a battery module combining the components of the battery module of FIG. 2. Figure 4 is a front view showing the battery module of Figure 3 with an insulating cover attached. Figure 5 is a perspective view projected from the battery module of Figure 4 showing the insulating cover covering the bus bar. FIG. 6 is a partial perspective view showing a battery module according to another embodiment of the present invention. 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 part is said to be "directly above" another part, it means that there is no other part in between. Also, saying that a part is "on" or "on" a reference part means that it is located above or below the reference part, and does not necessarily mean that it is located "on" or "on" facing the opposite direction of gravity. Furthermore, throughout the specification, when a part is described as "including" a certain c