KR-20260067100-A - BUSBAR COVER AND BATTERY PACK COMPRISING THE SAME

Abstract

According to exemplary embodiments of the present invention, a busbar cover may be provided. The busbar cover comprises an inner cover covering a body portion of a busbar; an outer cover covering the body portion on the inner cover; and a cover cap covering a side portion of the inner cover, wherein the inner cover comprises an insulating material, and the outer cover and the cover cap may comprise at least one of a fire-resistant material and a heat-resistant material.

Inventors

• 이정훈
• 정혜미
• 김광모
• 이주형

Assignees

• 주식회사 엘지에너지솔루션

Dates

Publication Date

20260512

Application Date

20241105

Claims (11)

1. An inner cover covering the body of the busbar; On the inner cover above, an outer cover covering the body portion; and It includes a cover cap that covers the side of the inner cover, and The above inner cover includes an insulating material, and A busbar cover characterized in that the outer cover and the cover cap include at least one of a fire-resistant material and a heat-resistant material.
2. In Article 1, A busbar cover characterized in that the above-described cover cap further covers the side of the above-described outer cover.
3. In Article 2, A busbar cover characterized in that the inner cover is sealed by the outer cover and the cover cap.
4. In Article 1, A busbar cover characterized in that the above-mentioned cover cap is in the shape of a square ring and is penetrated by the above-mentioned busbar.
5. In Paragraph 4, The above busbar extends in a first direction, and The above busbar further includes the body portion and the contact portion arranged in the first direction, and A busbar cover characterized in that the above cover cap is configured to be penetrated in the first direction by the contact portion and coupled to the outer cover.
6. In Article 1, A busbar cover characterized by not covering the contact portions at both ends of the busbar.
7. In Article 1, The above inner cover comprises mika, aerogel, or polyurethane (PU) material, and A busbar cover characterized in that the outer cover comprises FRB (fire resistance barrier) or NCG (non-combustible glass fiber) material.
8. In Article 1, A busbar cover characterized in that the outer cover and the cover cap are integrally formed.
9. Pack housing; A plurality of battery cell assemblies accommodated in the above-mentioned pack housing; A busbar electrically connecting the plurality of battery cell assemblies and extending in a first direction; and Includes busbar cover, The above busbar cover is, An inner cover surrounding the body portion of the busbar in a second direction intersecting the first direction; On the inner cover above, an outer cover surrounding the body portion in the second direction; and It includes a cover cap that covers the side of the inner cover and the side of the outer cover and seals the inner cover. The above inner cover includes an insulating material, and A battery pack characterized in that the outer cover and the cover cap include at least one of a fire-resistant material and a heat-resistant material.
10. In Article 9, A battery pack characterized in that the above-mentioned cover cap is in the shape of a square ring and is configured to be coupled to the outer cover by penetrating in the first direction through the contact portion of the bus bar.
11. In Article 9, A battery pack characterized in that the above-described cover cap overlaps with the inner cover and the outer cover, respectively, in the first direction.

Description

Busbar cover and battery pack comprising the same The present invention relates to a busbar cover for a secondary battery and a battery pack including the same. Battery packs applied to electric vehicles and the like have a structure in which multiple battery cell assemblies containing multiple secondary batteries are connected in series or parallel to obtain high output. In addition, the above secondary battery is capable of repeated charging and discharging through electrochemical reactions between components including positive and negative current collectors, a separator, an active material, and an electrolyte. A busbar is used to electrically connect the above battery cell assemblies. The busbar is used to electrically connect the terminals of adjacent battery cell assemblies or to connect the battery cell assemblies to an external electrical device. FIG. 1 is a perspective view illustrating a busbar cover according to embodiments of the technical concept of the present invention. FIG. 2 is a perspective view illustrating the coupling relationship of some components of a busbar cover according to embodiments based on the technical concept of the present invention. FIG. 3 is a perspective view of a busbar to explain a busbar cover according to embodiments of the technical concept of the present invention. FIG. 4 is a cross-sectional view illustrating a busbar cover according to embodiments of the technical concept of the present invention. FIG. 5 is a cross-sectional view illustrating a busbar cover according to embodiments of the technical concept of the present invention. FIG. 6 is a perspective view illustrating a busbar cover according to embodiments of the technical concept of the present invention. FIG. 7 is a plan view showing a battery pack according to embodiments of the technical concept of the present invention. FIG. 8 is a drawing for explaining a battery pack according to embodiments based on the technical concept of the present invention. FIG. 9 is a drawing for explaining a battery pack according to embodiments based on the technical concept of the present invention. 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 for explaining a busbar cover (140) according to embodiments of the technical concept of the present invention. FIG. 2 is a perspective view for explaining the connection relationship of some components of a busbar cover (140) according to embodiments of the technical concept of the present invention. Specifically, FIG. 2 is a perspective view for explaining the connection of a cover cap (145) of a busbar cover (140). FIG. 3 is a perspective view of a busbar (130) for explaining a busbar cover (140) according to embodiments of the technical concept of the present invention. FIG. 4 is a cross-sectional view illustrating a busbar cover (140) according to embodiments of the technical concept of the present invention. Specifically, FIG. 4 is a cross-sectional view along line A-A of FIG. 1. FIG. 5 is a cross-sectional view illustrating a busbar cover (140) according to embodiments of the technical concept of the present invention. Specifically, FIG. 5 is a cross-sectional view along line B-B of FIG. 1. Referring to FIGS. 1 to 3, a busbar cover (140) covering a busbar (130) may be provided. The busbar (130) may have a shape extending in a first direction (D1). The busbar (130) may include a body portion (131) and contact portions (132) at both ends. The contact portions (132) at both ends may be spaced apart