KR-20260066257-A - SIDE SILL STRUCTURE FOR ELECTRIC VEHICLES

KR20260066257AKR 20260066257 AKR20260066257 AKR 20260066257AKR-20260066257-A

Abstract

A side sill structure for an electric vehicle is disclosed. An exemplary embodiment of the disclosed side sill structure for an electric vehicle may include: i) a sill inner member that is respectively coupled to both sides along the vehicle width direction of a floor structure and arranged along the vehicle body front-rear direction; ii) an upper reinforcing member that is coupled to the outer surface of the sill inner member and arranged along the vehicle body front-rear direction; iii) a lower reinforcing member that is coupled to the lower part of the upper reinforcing member and the outer surface of the sill inner member and arranged along the vehicle body front-rear direction; and iv) a sill outer member that is coupled to the outer surface of the sill inner member and the upper reinforcing member and arranged along the vehicle body front-rear direction.

Inventors

노승호
강승민
오수민

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260512
Application Date: 20241104

Claims (15)

A sill inner member that is respectively connected to both sides along the vehicle width direction of the floor structure and arranged along the front-rear direction of the vehicle body; An upper reinforcing member coupled to the outer surface of the above-mentioned inner seal member and arranged along the front-rear direction of the vehicle body; A lower reinforcing member coupled to the lower part of the upper reinforcing member and the outer surface of the sill inner member, and arranged along the front-rear direction of the vehicle body; and A sill outer member coupled to the outer surface of the sill inner member and the upper reinforcing member, and arranged along the front-rear direction of the vehicle body; A side sill structure for an electric vehicle including
In Article 1, Both sides of the floor panel and cross members provided in the floor structure along the vehicle width direction are coupled to the inner surface of the sill inner member, and A side sill structure for an electric vehicle in which the above cross members and the above upper reinforcing member are arranged on a first virtual line according to the vehicle width direction.
In Article 2, The above-mentioned inner seal member is coupled to both side frames of the battery assembly mounted on the lower part of the floor structure, and A side sill structure for an electric vehicle in which the side of the upper reinforcing member coupled to the outer surface of the inner sill member and the side of the side frame are positioned on a second virtual line according to the vertical direction.
In Paragraph 3, A side sill structure for an electric vehicle in which the section from the side of the upper reinforcing member and the side of the side frame to the sill outer member is set as a deformation section.
In Article 1, The above upper reinforcing member includes an aluminum extrusion member, and The above aluminum extrusion member is a side sill structure for an electric vehicle comprising a plurality of closed sections partitioned by at least one bulkhead.
In Article 1, The above lower reinforcing member is, Multiple cell assemblies continuously connected along the front-rear direction of the vehicle body A side sill structure for an electric vehicle including
In Article 6, The above lower reinforcing member is, A side sill structure for an electric vehicle, formed in a honeycomb type along the front-rear direction of the vehicle body by the above cell assemblies.
In Article 6, Each of the above cell assemblies is, An upper cell body made of steel material coupled to the lower surface of the upper reinforcing member, and A steel lower cell body that is coupled to the lower part of the upper cell body and coupled to the outer surface of the seal inner member. A side sill structure for an electric vehicle including
In Article 8, The above upper cell body is a side sill structure for an electric vehicle provided with an 'M' shaped cross-section.
In Article 9, The above lower cell body is a side sill structure for an electric vehicle provided with a 'U'-shaped cross-sectional shape.
In Article 8, The above upper cell body is, An upper forming section formed concavely from the top to the bottom, and An upper coupling part extending forward and backward respectively from the upper forming part and coupled to the lower surface of the upper reinforcing member, and Upper rib sections each extending downward from the upper joint section above A side sill structure for an electric vehicle including
In Article 11, The above lower cell body is, A lower coupling portion formed along the front-rear direction of the vehicle body and coupled to the outer surface of the sill inner member, and Lower rib sections extending upward from both sides of the lower coupling section A side sill structure for an electric vehicle including
In Article 12, A side sill structure for an electric vehicle in which the upper rib portions and the lower rib portions of each of the above cell assemblies are joined by welding.
In Article 13, A side sill structure for an electric vehicle in which the upper rib portions and the lower rib portions of the cell assemblies adjacent to each other along the front-rear direction of the vehicle body are joined by welding.
In Article 8, A side sill structure for an electric vehicle in which weld nuts penetrating the inner sill member and the lower cell body in the vertical direction are joined to the inner sill member.

Description

Side sill structure for electric vehicles An embodiment of the present invention relates to a body structure of an electric vehicle, and more specifically, to a side sill structure for an electric vehicle with improved side collision performance. Recently, due to environmental and fuel efficiency regulations, the use of electric vehicles powered by electric sources is increasing. An electric vehicle is equipped with a battery assembly that supplies electricity to an electric drive source. In one example, the battery assembly is mounted on the underside of the floor structure of the electric vehicle body. Meanwhile, in the case of electric vehicles, the main factor affecting the driving range (or range) is the battery volume ratio of the battery assembly. In other words, the more battery cells are loaded into the limited space of the battery assembly, the greater the driving range of the electric vehicle. However, the battery capacity may be reduced due to parts with overlapping mechanical rigidity between the vehicle body and the battery assembly (e.g., side parts of the battery assembly connected to the vehicle body) and battery mounting parts of the battery assembly. On the other hand, with the recent increase in demand for electric vehicles, there is a need for the development of vehicle bodies capable of satisfying crash performance requirements. In particular, there is a demand for vehicle bodies that can protect the battery assembly during side collisions of electric vehicles. The matters described in this background technology section are written to enhance understanding of the background of the invention and may include matters that are not prior art already known to those skilled in the art to which this technology belongs. The embodiments of this specification may be better understood by referring to the following description in conjunction with the attached drawings, in which similar reference numerals refer to identical or functionally similar elements. FIG. 1 is a plan view illustrating a side sill structure for an electric vehicle according to an embodiment of the present invention. FIG. 2 is a combined perspective view illustrating a side sill structure for an electric vehicle according to an embodiment of the present invention. FIG. 3 is an exploded perspective view illustrating a side sill structure for an electric vehicle according to an embodiment of the present invention. Figure 4 is a cross-sectional perspective view along line AA of Figure 1. Figure 5 is a cross-sectional view along the BB line of Figure 1. FIG. 6 is a combined perspective view illustrating a lower reinforcing member applied to a side sill structure for an electric vehicle according to an embodiment of the present invention. FIG. 7 is an exploded perspective view illustrating a cell assembly of a lower reinforcing member applied to a side sill structure for an electric vehicle according to an embodiment of the present invention. FIG. 8 is a cross-sectional view illustrating a battery assembly mounting structure of a side sill structure for an electric vehicle according to an embodiment of the present invention. FIG. 9 is a drawing for explaining the operation of a side sill structure for an electric vehicle according to an embodiment of the present invention. FIG. 10 is a drawing illustrating a comparative example of a side sill structure for an electric vehicle according to an embodiment of the present invention. The drawings referenced above are not necessarily drawn to scale and should be understood as presenting somewhat simplified representations of various preferred features illustrating the basic principles of the invention. For example, specific design features of the invention, including specific dimensions, orientations, positions, and shapes, will be partially determined by specific intended applications and usage environments. Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used herein, singular forms are intended to include plural forms as well, unless explicitly otherwise indicated in the context. It should also be understood that the terms “comprising” and/or “comprising” as used herein indicate the presence of specified features, integers, steps, operations, elements and/or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components and/or groups thereof. As used herein, the term “and/or” includes any one or all combinations of one or more items listed in association. In this specification, the term “combined” indicates a physical relationsh