JP2016097783A - Protection structure of power storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight and cost of a structure for protecting a power storage device which is arranged between left and right seats.SOLUTION: A secondary battery 22 is supported by a support member 24 which is fixed to a vehicle body (floor panel 12). A protection member 26 covers a sideway and an upper part of the secondary battery 22, and is fixed to the support member 24. The protection member 26 has a curved part 36 at a portion corresponding to a seat frame 20. The seat frame 20 abuts on the curved part 36 at a sideway collision, and is upwardly deviated. A leg 30 of the support member 24 is deformed, and the secondary battery 22 escapes from an approximating seat. By suppressing an increase of the weight and cost of a member for constituting the protection structure, the secondary battery 22 can be efficiently protected.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a structure for protecting a power storage device disposed between a right seat and a left seat of an automobile at the time of a collision, and more particularly to protection at the time of a side collision.

  As a prime mover for driving an automobile, an electric vehicle and a hybrid vehicle equipped with an electric motor are known. In these automobiles, a power storage device such as a secondary battery or a capacitor is mounted on the vehicle as a power source to be supplied to the electric motor. Patent Document 1 below describes a power storage device (21) disposed between a driver seat (31) and a passenger seat (32). Furthermore, the automobile of Patent Document 1 has a reinforcing member (1) for connecting and fixing the skeleton members of the driver seat and the passenger seat so as to bridge each other. In a side collision, the force input to one of the driver seat and the passenger seat is transmitted to the other seat via the reinforcing member (1). The input from the side is supported by the two seats, the movement of the seats is reduced, and the impact on the power storage device (21) is mitigated. In addition, the code | symbol in () is a code | symbol used by patent document 1, and is not related with the code | symbol used by embodiment of this application.

JP 2008-189242 A

  The reinforcing member disclosed in Patent Document 1 requires sufficient strength to transmit the force received by one seat to the other seat. For this reason, there existed a problem of causing the increase in a weight and cost.

  An object of the present invention is to protect a power storage device with a lighter and less expensive structure.

  The present invention relates to a protective structure for a power storage device disposed between a right seat and a left seat of an automobile. The protective structure is fixed to a vehicle body and supports a power storage device, and is fixed to the leg portion. And a protective member provided facing the upper surface, the side surface facing the left seat, the side surface facing the left seat, and the upper surface. A convex curved portion is formed on the portion of the protective member that faces the seat frame of the right seat and the left seat, and connects the side surface and the upper surface. Further, when the right seat or the left seat collides with the protective member, the leg portion is deformed or broken with a smaller input than the protective member is deformed.

  At the time of a side collision, the moving direction of the frame is changed by the bending portion, and the input to the power storage device from the frame is deflected. Further, when the leg portion is deformed or broken, the power storage device can be moved away from the moving seat. As a result, the protective member can be made lightweight and inexpensive.

It is a transverse cross section in the front seat position of a car. It is a perspective view which shows a secondary battery and its protective structure. It is sectional drawing which shows a secondary battery and its protective structure. It is a cross-sectional view which shows the state at the time of a side collision.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view at the front seat position as viewed from the front of the automobile. In the following description, terms indicating directions such as front, rear, right, left, top, and bottom represent directions on the basis of the traveling direction of the vehicle unless otherwise specified.

  The front seat of the automobile includes two seats 10A and 10B arranged side by side. In an automobile in which the right seat in the traveling direction is the driver seat, the left seat 10A is the driver seat and the right seat 10B is the passenger seat in the figure. In the following, when there is no need to distinguish between the left and right seats, common items will be described as a seat 10 for the sake of simplicity. The seat 10 is mounted on a vehicle body, more specifically, a floor panel 12 via a slide rail 14. The slide rail 14 extends in the front-rear direction of the vehicle body, and the seat 10 can slide along the slide rail 14. The seat 10 has a seat surface 16 on which a passenger's buttocks rest and a backrest 18 that supports the back. The seat 10 has a seat frame 20 formed by combining steel materials. In FIG. 1, a frame pipe 20 a that penetrates the seat surface 16 in the left-right direction is shown.

  A secondary battery 22 is disposed as a power storage device between the left and right seats 10A and 10B. As the power storage device, a device having another power storage function such as a capacitor may be employed. The secondary battery pole column 23 is located on the left and right side upper portions of the secondary battery (see FIG. 3). The secondary battery 22 is supported by a support member 24 fixed to the floor panel 12. Moreover, the protection member 26 is arrange | positioned so that the right and left side surface and upper surface of the secondary battery 22 may be covered. The protection member 26 is supported by the support member 24.

  2 and 3 are diagrams showing the secondary battery 22 and a protective structure for protecting the secondary battery 22 in an extracted manner. 2 is a perspective view, and FIG. 3 is a cross-sectional view similar to FIG. In the cross section, the support member 24 has a generally U-shape that is open downward, and this shape is continuous in the front-rear direction. A secondary battery 22 is placed on a horizontally placed placement surface 28, and a plurality of leg portions 30 extend from the lateral edges of the placement surface 28 toward the floor panel 12. The secondary battery 22 is fixed to the mounting surface 28 by fastening members such as bolts and nuts. In this protection structure, three leg portions 30 are arranged on the left and right sides, and are fixed to the floor panel 12 by fastening members such as bolts and nuts. Moreover, the leg part 30 may be fixed to the floor panel by welding.

  The protective member 26 has a U-shaped cross-sectional shape that opens downward and has rounded corners, or an inverted U-shaped cross-section, and this shape is continuous in the front-rear direction. Therefore, the protection member 26 has the left and right side surfaces 32 and the upper surface 34 that respectively oppose the left and right side surfaces and the upper surface of the secondary battery 22, and covers the whole of the secondary battery 22 in the front-rear direction. The side surface 32 of the protection member 26 is fixed at the lower edge thereof in the vicinity of the left and right side edges of the mounting surface 28 of the support member 24 by fastening members such as bolts and nuts.

  A curved portion 36 is provided at a portion where the side surface 32 and the upper surface 34 of the protection member 26 are connected. As shown in the drawing, the curved portion 36 is formed to protrude outward, and is smoothly connected to each of the side surface 32 and the upper surface 34. The curved portion 36 is provided at a position facing the seat frame 20, particularly the frame pipe 20a, as well shown in FIG.

  In the protection structure of this embodiment, the protection member 26 is formed of a steel plate thicker than the support member 24. For example, the supporting member 24 can be formed of a steel plate having a thickness of 1 mm and the protective member 26 having a thickness of 3 mm. Each leg 30 is not provided with a rib or the like for increasing bending rigidity, and has a flat plate shape.

  FIG. 4 is a diagram showing movement and deformation of the front seat 10 and the secondary battery 22 and their protective structures during a side collision. When a collision occurs from the right side of the automobile, the right seat 10A moves toward the left. By this movement, the seat 10 </ b> A hits the curved portion 36 of the protection member 26. At this time, since the surface of the curved portion 36 is inclined with respect to the moving direction of the seat frame 20 of the seat 10 </ b> A, the moving direction of the seat frame 20 is deflected along the surface of the curved portion 36. Thereby, the impact from the seat frame 20 to the protection member 26 is reduced. Further, when the protection member 26 receives a force from the seat 10A, the leg portion 30 of the support member 24 is deformed. As described above, since the plate thickness of the steel plate constituting the leg portion 30 is thinner than that of the protective member 26, the rigidity is relatively low and the leg portion 30 is first deformed. As a result, the secondary battery 22 moves away from the seat 10A. The same applies to the collision from the left side of the car.

  By providing the protective member 26 so as to cover the secondary battery 22, it is possible to prevent the seat frame 20, in particular, the frame pipe 20a from reaching the secondary battery 22. In addition, since the movement of the seat frame 20 is deflected upward by the curved portion 36, the impact on the protection member 26 is mitigated, and the seat frame 20 can be prevented from penetrating the protection member 26. For this reason, the intensity | strength of the protection member 26 can be suppressed and the weight increase can be suppressed by that much. Further, the outwardly convex curved portion 36 contributes to improving the strength with respect to the input from the outside. Furthermore, the secondary battery 22 can be released from the moving seat 10 by deforming the leg 30. This also has the effect of mitigating the impact on the secondary battery 22.

  According to the protective structure of this embodiment, it is possible to eliminate or reduce the direct or indirect collision of the seat frame 20 to the secondary battery 22 at the time of a side collision, and to prevent the secondary battery 22 from being damaged. be able to.

  Since the effect of deflecting the seat 10 and the seat frame 20 upward can be obtained even on a flat slope or the like, instead of the curved portion 36, an inclined slope or a structural material with respect to the moving direction of the seat 10 or the like is adopted. You can also. By changing the plate thickness of the leg 30 and the protection member 26, the leg 30 is relatively easily deformed. However, a fragile part is provided in a part of the leg, and this part is deformed when receiving external force. Alternatively, it may be broken. The leg 30 may be provided with a reinforcing structure such as a rib as long as it can be deformed at the time of collision. Although the protection member 26 has a length that covers the secondary battery 22 in the front-rear direction, the protection member 26 may be provided only at a position facing the seat frame 20, particularly the frame pipe 20a.

  The protective structure of this embodiment can be adopted not only in the front seat but also in a car in which a secondary battery is disposed between the rear seats in which the left and right seats are independent.

10 seats, 12 floor panels, 16 seating surfaces, 18 backrests, 20 seat frames, 20a frame pipes, 22 secondary batteries (power storage devices), 24 support members, 26 protection members, 30 legs.

Claims (1)

A power storage device protective structure disposed between a right seat and a left seat of an automobile,
Legs fixed to the vehicle body and supporting the power storage device;
A protective member fixed to the leg and provided opposite to the side surface and the upper surface of the storage battery facing the right seat and the left seat;
Have
A convex curved portion is formed on the portion of the protective member that faces the seat frame of the right seat and the left seat, and connects the side surface and the upper surface.
The leg deforms or breaks with a smaller input than the protective member deforms when the right seat or the left seat collides with the protective member.
Protective structure for power storage device.

Images