KR-20260063819-A - BATTERY MODULE AND BATTERY PACK INCLUDING THE SAME

KR20260063819AKR 20260063819 AKR20260063819 AKR 20260063819AKR-20260063819-A

Abstract

The technical concept of the present invention provides a battery module comprising: a cell block including a plurality of battery cells; a module case including a bottom plate facing the bottom surface of the cell block, a first side plate facing the first side of the cell block, a second side plate facing the second side of the cell block, and a top plate facing the top surface of the cell block; a front frame facing the front of the cell block; a rear frame facing the rear of the cell block and including a gas discharge hole; and a fire extinguishing cover including an upper cover portion between the top surface of the cell block and the top plate, and a side cover portion between the rear of the cell block and the rear frame.

Inventors

정동익
김수열
박기찬

Assignees

주식회사 엘지에너지솔루션

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (15)

A cell block comprising a plurality of battery cells; A module case comprising a bottom plate facing the bottom surface of the cell block, a first side plate facing the first side of the cell block, a second side plate facing the second side of the cell block, and a top plate facing the top surface of the cell block; A front frame facing the front of the cell block above; A rear frame facing the rear surface of the cell block and including a gas exhaust hole; and A fire extinguishing cover comprising an upper cover portion located between the upper surface of the cell block and the upper plate, and a side cover portion located between the rear surface of the cell block and the rear frame; A battery module including
In Article 1, The side cover portion of the above fire extinguishing cover includes a plurality of slits, and A battery module characterized in that the plurality of slits in the side cover portion of the above-described fire cover each accommodate one end of a corresponding battery cell among the plurality of battery cells.
In Article 1, An insulating charge layer that at least partially fills the space between each of the plurality of battery cells and the front frame; A battery module characterized by further including
In Paragraph 3, Each of the above plurality of battery cells includes a cell case having a receiving space for accommodating an electrode assembly, and the cell case includes a sealing portion for sealing the receiving space of the cell case. A battery module characterized in that the insulating charge layer is in contact with the seal portion of the cell case.
In Paragraph 4, A battery module characterized in that each of the above plurality of battery cells further includes an electrode lead protruding to the outside of the cell case through a portion of the sealing part of the cell case that is in contact with the insulating charge layer.
In Paragraph 3, A battery module characterized in that the insulating charge layer comprises a resin.
In Article 1, An adhesive layer provided between the floor plate and the cell block, and for attaching the cell block to the floor plate; Includes more, Each of the above plurality of battery cells includes a cell case having a receiving space for accommodating an electrode assembly, and the cell case includes a sealing portion for sealing the receiving space of the cell case. A battery module characterized in that the adhesive layer is in contact with the sealing portion of the cell case.
In Article 1, An insulating charge layer that at least partially fills the space between each of the plurality of battery cells and the front frame; and An adhesive layer provided between the floor plate and the cell block, and for attaching the cell block to the floor plate; A battery module characterized by further including
In Article 8, Each of the above plurality of battery cells includes a cell case having a receiving space for accommodating an electrode assembly, a first electrode lead protruding from a first end of the cell case facing the rear frame, and a second electrode lead protruding from a second end of the cell case facing the front frame. The cell case above includes a sealing portion for sealing the receiving space of the cell case, and The sealing part of the cell case above is, A first sealing portion provided on the bottom of the cell case facing the bottom plate and in contact with the adhesive layer; A second seal provided at the first end of the cell case; and A third sealing portion provided at the second end of the cell case and in contact with the insulating filling layer; A battery module characterized by including
In Article 1, The battery module is characterized by the above-mentioned fire cover containing a fire extinguishing substance.
In Article 1, The above plurality of battery cells are arranged in a first direction, and A battery module characterized in that the cell block further includes an inter-cell pad disposed between two adjacent battery cells among the plurality of battery cells.
Pack housing; and A battery module mounted in the above-mentioned pack housing; Includes, The above battery module is, A cell block comprising a plurality of battery cells; A module case comprising a bottom plate facing the bottom surface of the cell block, a first side plate facing the first side of the cell block, a second side plate facing the second side of the cell block, and a top plate facing the top surface of the cell block; A front frame facing the front of the cell block above; A rear frame facing the rear surface of the cell block and including a gas discharge hole; An insulating charge layer that at least partially fills the space between each of the plurality of battery cells and the front frame; An adhesive layer provided between the floor plate and the cell block and attaching the cell block to the floor plate; and A fire extinguishing cover provided between the upper surface of the cell block and the upper plate, and between the rear surface of the cell block and the rear frame; A battery pack including
In Article 12, The above fire extinguishing cover includes a plurality of slits, and A battery pack characterized in that each of the plurality of slits of the fire cover accommodates one end of a corresponding battery cell among the plurality of battery cells.
In Article 12, Each of the above plurality of battery cells includes a cell case having a receiving space for accommodating an electrode assembly, a first electrode lead protruding from a first end of the cell case facing the rear frame, and a second electrode lead protruding from a second end of the cell case facing the front frame. The cell case above includes a sealing portion for sealing the receiving space of the cell case, and The sealing part of the cell case above is, A first sealing portion provided on the bottom of the cell case facing the bottom plate and in contact with the adhesive layer; A second seal provided at the first end of the cell case; and A third sealing portion provided at the second end of the cell case and in contact with the insulating filling layer; A battery pack characterized by including
In Article 14, The adhesive layer extends along the first sealing portion of the cell case, and A battery pack characterized in that the insulating charge layer extends along the third seal portion of the cell case.

Description

Battery module and battery pack including the same The present invention relates to a battery module and a battery pack including the same. Unlike primary batteries, secondary batteries can be charged and discharged multiple times. Secondary batteries are widely used as energy sources for various wireless devices such as handsets, laptops, and cordless vacuum cleaners. Recently, as the manufacturing cost per unit capacity of secondary batteries has decreased dramatically due to improved energy density and economies of scale, and as the driving range of BEVs (battery electric vehicles) has increased to a level equivalent to that of fuel vehicles, the primary use of secondary batteries is shifting from mobile devices to mobility. As rechargeable batteries are increasingly used in mobility, demands for their safety are rising. Given that accidents such as fires involving rechargeable batteries in mobility applications can endanger the lives of drivers, research into technologies to enhance battery safety is indispensable. FIG. 1 is a perspective view showing a battery module according to exemplary embodiments. FIG. 2 is an exploded perspective view showing a battery module according to exemplary embodiments. FIG. 3 is a side view showing a battery cell provided in a battery module according to exemplary embodiments. FIG. 4 is a cross-sectional view showing a battery module according to exemplary embodiments. FIG. 5 is a side view showing a part of a battery module according to exemplary embodiments. FIG. 6 is a plan view showing a part of a battery module according to exemplary embodiments. FIG. 7 is a plan view showing a battery pack according to exemplary embodiments. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Instead, based on the principle that the inventor can appropriately define the concepts of terms to best describe his invention, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application. In addition, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the invention, such detailed description is omitted. Since embodiments of the present invention are provided to more fully explain the invention to those skilled in the art, the shapes and sizes of the components in the drawings may be exaggerated, omitted, or schematically depicted for clearer explanation. Accordingly, the size or proportion of each component does not entirely reflect the actual size or proportion. (1st embodiment) FIG. 1 is a perspective view showing a battery module (10) according to exemplary embodiments. FIG. 2 is an exploded perspective view showing a battery module (10) according to exemplary embodiments. FIG. 3 is a side view showing a battery cell (110) provided in a battery module (10) according to exemplary embodiments. FIG. 4 is a cross-sectional view showing a battery module (10) according to exemplary embodiments. FIG. 5 is a side view showing a part of a battery module (10) according to exemplary embodiments. Referring to FIGS. 1 to 5, the battery module (10) may include a cell block (100), a module case (210), a rear frame (230), a front frame (250), an adhesive layer (310), and a fire cover (330). The cell block (100) may include a plurality of battery cells (110). An individual battery cell (110) is a basic unit of a lithium-ion battery, i.e., a secondary battery. An individual battery cell (110) may include an electrode assembly (111), an electrolyte, and a cell case (120). The electrode assembly (111) embedded in the cell case (120) may include a positive electrode, a negative electrode, and a separator interposed between the positive and negative electrodes. Depending on the assembly form, the electrode assembly (111) may be either a jelly-roll type or a stack type. A jelly-roll type electrode assembly (111) may include a wound structure of a positive electrode, a negative electrode, and a separator interposed between them. A stack type electrode assembly (111) may include a plurality of positive electrodes, a plurality of negative electrodes, and a plurality of separators interposed between them that are sequentially stacked. The positive electrode may include a positive current collector and a positive active material. The negative elect