Vehicle

Abstract

To provide a technology for increasing an amount of energy absorption of an energy absorber.SOLUTION: A vehicle comprises: a floor panel; a battery pack; a side sill; an energy absorber; at least one first fastening member that fastens the energy absorber to a lower surface of the side sill; at least one second fastening member that fastens the energy absorber to a lower surface of a flange formed on a side surface of the battery pack. The flange is formed in a recessed and projecting shape having at least one projecting part, along a front-rear direction. One of the first fastening member and the second fastening member includes at least one fastening member, and the other of the first fastening member and the second fastening member includes at least two fastening members located in front of and behind the one fastening member. The second fastening member is disposed on the projecting part of the flange, and the first fastening member is disposed at a position facing a recessed part adjacent to the projecting part of the flange.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a vehicle equipped with a battery pack. [Background technology]

[0002] The vehicle described in Patent Document 1 comprises a battery pack located below a floor panel, a side sill extending in the front-rear direction along the left-right side edges of the floor panel, and an energy absorber spanning between the left-right side of the battery pack and the underside of the side sill. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-226353 A Summary of the Invention [Problem to be solved by the invention]

[0004] The energy absorber deforms during a side collision to absorb the energy of the side collision. Increasing the amount of deformation of the energy absorber increases the amount of energy absorbed. For example, increasing the length of the energy absorber in the left-right direction increases the amount of deformation of the energy absorber. However, the length of the energy absorber in the left-right direction is restricted by the left-right width of the vehicle and the left-right width of the battery pack, etc.

[0005] The present specification provides techniques for increasing the amount of energy absorbed by an energy absorber. [Means for solving the problem]

[0006] The vehicle disclosed in this specification comprises a floor panel, a battery pack located below the floor panel, a side sill extending in a front-rear direction along the left-right side edges of the floor panel, an energy absorber spanning between a side surface of the battery pack in the left-right direction and an underside of the side sill and fixing the battery pack to the side sill, at least one first fastening member fastening the energy absorber to the underside of the side sill, and at least one second fastening member fastening the energy absorber to an underside of a flange formed on the side surface of the battery pack, the flange being formed in an uneven shape having at least one convex portion along the front-rear direction, one of the first fastening member and the second fastening member including at least one fastening member, the other of the first fastening member and the second fastening member including at least two fastening members located in front of and behind the one fastening member, the second fastening member being positioned on the convex portion of the flange, and the first fastening member being positioned opposite a concave portion adjacent to the convex portion of the flange.

[0007] According to the technology disclosed in this specification, in the event of a side collision, the first fastening member on the side sill enters the recess in the flange of the battery pack. The amount of deformation of the energy absorber can be increased by the distance that the first fastening member enters the recess in the flange compared to a comparative example in which the flange does not have a recess. The amount of energy absorbed by the energy absorber can be increased.

[0008] Details and further improvements of the technology disclosed in this specification are described in the following "Forms for Carrying Out the Invention". [Brief description of the drawings]

[0009] [Figure 1] 1 shows a partial cross-sectional view of a vehicle. [Diagram 2] FIG. 2 shows a plan view of the energy absorber attached. [Diagram 3] FIG. 2 shows a plan view with the energy absorber removed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (Vehicle 2 configuration; Figure 1) The vehicle 2 may be a rechargeable vehicle that is charged by an external power source, or a hybrid vehicle that also has an engine. The vehicle 2 includes a floor panel 12, a battery pack 14, a side sill 16, and an energy absorber 18. Note that the arrow "left" in the figure indicates the left side in the left-right direction of the vehicle 2, and the arrow "upward" indicates the upward direction in the up-down direction of the vehicle 2.

[0011] The battery pack 14 supplies power to a driving motor of the vehicle 2. The battery pack 14 is located below the floor panel 12. The side sills 16 are part of the framework of the vehicle 2, and extend in the front-rear direction of the vehicle 2 along the side edges of the floor panel 12 in the left-right direction.

[0012] The energy absorber 18 spans between the left-right side of the battery pack 14 and the underside of the side sill 16, and fixes the battery pack 14 to the side sill 16. The energy absorber 18 is a hollow member having a constant cross section along the front-rear direction, and has multiple internal spaces aligned along the left-right direction. When a side collision occurs to the vehicle 2, the energy absorber 18 absorbs the energy of the side collision by compressively deforming.

[0013] The vehicle 2 further includes a first fastening member 20 and a first collar 22. The first fastening member 20 includes a plurality of fastening members, and the first collar 22 also includes a plurality of collars. Each collar of the first collar 22 is cylindrical and disposed at the left end of the energy absorber 18. Each fastening member of the first fastening member 20 passes through each collar of the first collar 22 and is fastened to the underside of the side sill 16. As a result, the left end of the energy absorber 18 is fixed to the side sill 16.

[0014] The vehicle 2 further includes a second fastening member 30 and a second collar 32. The second fastening member 30 includes a plurality of fastening members, and the second collar 32 also includes a plurality of collars. Each collar of the second collar 32 is cylindrical and disposed at the right end of the energy absorber 18. Each fastening member of the second fastening member 30 passes through each collar of the second collar 32 and fastens to the lower surface of a flange 50 formed on the side of the battery pack 14. As a result, the right end of the energy absorber 18 is fixed to the battery pack 14.

[0015] The vehicle 2 further includes a third fastening member 40 that fastens a right end of the energy absorber 18 to the underside of the battery pack 14. The third fastening member 40 includes a plurality of fastening members.

[0016] As shown in Fig. 2, the first fastening members 20 are arranged at approximately equal intervals in the front-rear direction. As shown in Fig. 3, a plurality of fastening holes 16a corresponding to the first fastening members 20 are formed in the underside of the side sill 16. "Approximately equal intervals" means, for example, intervals that allow for a maximum error of 20% based on equal intervals. Note that, in a modified example, the first fastening members 20 may be arranged at different intervals.

[0017] As shown in Fig. 2, the second fastening members 30 are arranged at approximately equal intervals in the front-rear direction. As shown in Fig. 3, a plurality of fastening holes 54a corresponding to the second fastening members 30 are formed in the lower surface of the flange 50. Note that, in a modified example, the second fastening members 30 may be arranged at different intervals. Furthermore, a plurality of fastening holes 14a corresponding to the third fastening members 40 are formed in the lower surface of the battery pack 14.

[0018] As shown in Fig. 3, the flange 50 is formed in an uneven shape, and has a plurality of protruding portions 54 and a plurality of recessed portions 56. The plurality of protruding portions 54 and the plurality of recessed portions 56 are arranged alternately along the front-rear direction. In other words, the recessed portions 56 are adjacent to the protruding portions 54. The plurality of fastening holes 54a are arranged in the plurality of protruding portions 54, and one fastening hole 54a is arranged in one protruding portion 54.

[0019] 2 and 3, the first fastening member 20 is disposed at a position facing the recess 56 of the flange 50. For example, one fastening member of the first fastening member 20 (i.e., one fastening hole 16a) and two fastening members of the second fastening member 30 (i.e., two fastening holes 54a) form an isosceles triangle T1. In other words, one fastening member of the first fastening member 20 is located approximately in the center of the two fastening members of the second fastening member 30. "Approximately in the center" means, for example, a position that allows for a maximum error of 10% with respect to the center.

[0020] Moreover, the recess 56 of the flange 50 is curved in an arc shape. The width L2 of the recess 56 is greater than the width L1 (see FIG. 1) of the first collar 22. In a modified example, the recess 56 of the flange 50 may be rectangular.

[0021] (effect) In this embodiment, during a side collision, the first fastening member 20 on the side sill 16 side enters the recess 56 of the flange 50 of the battery pack 14. The amount of deformation of the energy absorber 18 can be increased by the distance that the first fastening member 20 enters the recess 56 of the flange 50 compared to a comparative example in which the flange 50 does not have a recess 56. The amount of energy absorbed by the energy absorber 18 can be increased. In particular, since the width L2 of the recess 56 is larger than the width L1 of the first collar 22, not only the first fastening member 20 but also the first collar 22 enters the recess 56, and the amount of deformation of the energy absorber 18 can be increased.

[0022] (Correspondence) The floor panel 12, battery pack 14, side sill 16, energy absorber 18, first fastening member 20, second fastening member 30, flange 50, convex portion 54, and concave portion 56 are respectively examples of the "floor panel," "battery pack," "side sill," "energy absorber," "first fastening member," "second fastening member," "flange," "convex portion," and "concave portion."

[0023] The following points should be noted regarding the technology shown in the embodiment: The configuration of the embodiment may be applied not only to the left side sill 16 but also to the right side sill.

[0024] The number of first fastening members 20 may be at least one, and the number of second fastening members 30 may be at least two. Conversely, the number of first fastening members 20 may be at least two, and the number of second fastening members 30 may be at least one. In addition, when the "first fastening member" is two fastening members and the "second fastening member" is one fastening member, three fastening members may be arranged as shown by an isosceles triangle T2 in FIG. 3. [Explanation of symbols]

[0025] 2: Vehicle 12: Floor panel 14: Battery pack 14a: Fastening hole 16: Side sill 16a: Fastening hole 18: Energy absorber 20: First fastening member 22: First color 30: Second fastening member 32: Second color 40: Third fastening member 50: Flange 54: Convex 54a: Fastening hole 56: Recess L1, L2: Width T1, T2: Isosceles triangle

Claims

[Claim 1] Floor panels and a battery pack located below the floor panel; a side sill extending in a front-rear direction along a side edge in a left-right direction of the floor panel; an energy absorber that bridges between a side surface of the battery pack in the left-right direction and a lower surface of the side sill and fixes the battery pack to the side sill; At least one first fastening member that fastens the energy absorber to the lower surface of the side sill; At least one second fastening member that fastens the energy absorber to a lower surface of a flange formed on the side surface of the battery pack; Equipped with The flange is formed in an uneven shape having at least one protrusion along the front-rear direction, One of the first fastening member and the second fastening member includes at least one fastening member, The other of the first fastening member and the second fastening member includes at least two fastening members located in front and behind the one fastening member, The second fastening member is disposed on the protruding portion of the flange, The first fastening member is disposed at a position facing a recess adjacent to the protrusion of the flange. vehicle.

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