KR-20260065234-A - Reinforcement assembly and battery protection assembly compr110s1ing the same

Abstract

An embodiment of the present invention provides a reinforcing assembly comprising: a first frame portion having a closed cross section and including a receiving groove on an outer surface; a second frame portion having a first end portion inserted into the receiving groove and a second end portion protruding outwardly from the outer surface of the first frame portion; and at least one connecting portion disposed between the first frame portion and the second frame portion and connecting the first frame portion and the second frame portion.

Inventors

• 정창균
• 위상권
• 박종철

Assignees

• 주식회사 포스코

Dates

Publication Date

20260508

Application Date

20241101

Claims (20)

1. A first frame portion having a closed cross section and including a receiving groove on the outer surface; A second frame portion having a first end portion inserted and disposed into the receiving groove, and a second end portion protruding outwardly from the outer surface of the first frame portion; and A reinforcing assembly comprising: at least one connecting part disposed between the first frame part and the second frame part and connecting the first frame part and the second frame part.
2. In Article 1, The above receiving groove is, A reinforcing assembly having an outer surface that is bent toward the inner side of the first frame portion and combined with the inner surface of the first frame portion.
3. In Article 1, A reinforcing assembly further comprising a connecting member that combines and fixes the above connecting part and the above second frame part.
4. In Article 1, The above connecting part is, A reinforcing assembly comprising a vertical portion extending parallel to the height direction of the first frame portion and a horizontal portion connected to the vertical portion and bent and extended in a direction perpendicular to the height direction.
5. In Paragraph 4, The above connecting part is provided in two parts, The above connection part of either of the two is, The above horizontal portion is connected to the upper surface of the second frame portion, and the above vertical portion is connected to a part of the outer surface of the first frame portion. The aforementioned connection part of the remaining one of the two is, A reinforcing assembly in which the horizontal portion is connected to the lower surface of the second frame portion, and the vertical portion is connected to another part of the outer surface of the first frame portion.
6. In Article 1, The above connecting part is, A reinforcing assembly extending along the vertical direction from the upper or lower surface of the second frame portion and coupled to the outer surface of the first frame portion.
7. In Article 1, The above second frame part is, A reinforcing assembly comprising an internal space and a reinforcing member extending to abut the inner surface of the second frame member centered on an intersection arranged in the internal space.
8. In Article 1, The above receiving groove is, A reinforcing assembly having a tapered shape in which the width decreases as it moves away from the outer surface.
9. In Article 8, The above second frame part is, A reinforcing assembly in which the width of the first end portion decreases as it extends toward the inner side of the receiving groove so as to correspond to the shape of the receiving groove.
10. In Article 1, The above connecting part is, It is made of the same material as the first frame part, but is made of a different material from the second frame part, and A reinforcing assembly in which the method of joining the above connecting part and the first frame part is different from the method of joining the above connecting part and the second frame part.
11. A reinforcing assembly comprising: a first frame portion having a closed cross section and including a receiving groove on an outer surface and having a pair thereof arranged opposite each other and extending parallel to each other; a second frame portion having a first end inserted into the receiving groove and a second end protruding outwardly from the outer surface; and at least one connecting portion disposed between the first frame portion and the second frame portion and connecting the first frame portion and the second frame portion; and A battery protection structure comprising: a third frame portion connecting a pair of the first frame portions and forming a storage space for housing a battery.
12. In Article 11, A battery protection structure further comprising at least one cross member disposed within the storage space and supporting a pair of the first frame portions.
13. In Article 11, The above receiving groove is, A battery protection structure having the outer surface of the above-mentioned portion bent toward the inner side of the first frame portion and combined with the inner surface of the first frame portion.
14. In Article 11, The above reinforcing assembly is, A battery protection structure further comprising a coupling member that combines and fixes the above-mentioned connecting part and the above-mentioned second frame part.
15. In Article 11, The above connecting part is, A battery protection structure comprising a vertical portion extending parallel to the height direction of the first frame portion and a horizontal portion connected to the vertical portion and bent and extended in a direction perpendicular to the height direction.
16. In Article 15, The above connecting part is provided in two parts, The above connection part of either of the two is, The above horizontal portion is connected to the upper surface of the second frame portion, and the above vertical portion is connected to a part of the outer surface of the first frame portion. The aforementioned connection part of the remaining one of the two is, A battery protection structure in which the horizontal portion is connected to the lower surface of the second frame portion, and the vertical portion is connected to another part of the outer surface of the first frame portion.
17. In Article 11, The above connecting part is, A battery protection structure extending along the vertical direction from the upper or lower surface of the second frame portion and coupled to the outer surface of the first frame portion.
18. In Article 11, The above receiving groove is, A battery protection structure having a tapered shape in which the width decreases as it moves away from the outer surface.
19. In Article 18, The above second frame part is, A battery protection structure in which the width of the first end portion decreases as it extends toward the inner side of the receiving groove so as to correspond to the shape of the receiving groove.
20. In Article 11, The above connecting part is, It is made of the same material as the first frame part, but is made of a different material from the second frame part, and A battery protection structure in which the method of combining the above connecting part and the first frame part is different from the method of combining the above connecting part and the second frame part.

Description

Reinforcement assembly and battery protection assembly including the same The present invention relates to a reinforcing assembly and a battery protection structure including the same. Generally, electric vehicles include pure electric vehicles (EVs) that drive by powering a drive motor, hybrid electric vehicles (HEVs) that drive using both an engine and a drive motor, and fuel cell electric vehicles (FCEVs) that drive by powering a drive motor using electricity generated from a fuel cell. An electric vehicle includes a battery as a storage means to supply power to the drive motor, in addition to a drive motor for driving the vehicle; for example, nickel-hydrogen and lithium-polymer batteries are used. Such a battery is composed of a battery pack in which multiple battery pack modules are combined in series or parallel, and the battery pack is mounted in the electric vehicle while housed within a battery case. The battery case utilizes various load-bearing members to protect the batteries housed inside. A representative example is the side frame of the battery case, which forms a side wall that partitions the space where the battery cells are mounted and surrounds the cells to protect them from external impacts. Side frames and battery cases are generally manufactured using aluminum or aluminum alloys. This is due to the inherent lightweight nature of aluminum and the advantages of formability, such as the ability to easily create side frames with complex cross-sections using extrusion processes. While this approach offers significant weight reduction, it presents a problem in terms of mass production feasibility, as there is a high likelihood of shape errors caused by spring packs during the actual manufacturing process. FIG. 1 is a perspective view illustrating a battery protection structure according to one embodiment of the present invention. FIG. 2 is a cross-sectional view showing a first frame portion according to an embodiment of the present invention as viewed from the direction II-II' of FIG. 1. FIG. 3 is a perspective view illustrating the first frame portion of FIG. 2. FIG. 4 is a cross-sectional view showing a reinforcing assembly according to one embodiment of the present invention as viewed from the direction II-II' of FIG. 1, and an enlarged view (a) of FIG. 4 is a cross-sectional view showing an enlarged view of one end of a second frame part. Figure 5 is a perspective view illustrating the reinforcing assembly of Figure 4. FIG. 6 is a cross-sectional view showing a reinforcing assembly according to another embodiment of the present invention as viewed from the direction II-II' of FIG. 1. FIG. 7(a) is a cross-sectional view schematically illustrating a reinforcing assembly according to embodiments of the present invention and a reinforcing assembly according to comparative examples, and FIG. 7(b) is a graph showing the change over time of resistance to external force of the reinforcing assembly when an external impact is applied to the reinforcing assembly according to embodiments of the present invention and the reinforcing assembly according to comparative examples of FIG. 7(a). Preferred embodiments of the present invention will be described below with reference to the attached drawings. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. In addition, embodiments of the present invention are provided to more fully explain the present invention to those with average knowledge in the relevant technical field. In drawings, the shapes and sizes of elements may be exaggerated for clearer explanation. In describing the embodiments of the present invention, if it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the essence of the present invention, such detailed description will be omitted. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intentions or conventions of the user or operator. Therefore, such definitions should be based on the content throughout this specification. The terms used in the detailed description are merely for describing the embodiments of the present invention and should not be limited in any way. Unless explicitly stated otherwise, expressions in the singular form include the meaning of the plural form. In this description, expressions such as “include” or “equipped” are intended to refer to certain characteristics, numbers, steps, actions, elements, parts or combinations thereof, and should not be interpreted to exclude the existence or possibility of one or more other characteristics, numbers, steps, actions, elements, parts or combinations thereof other than those described. In this specification, terms such as 'top', 'upper', 'upper surface', 'lower', 'lower surface', 'lower surface