JP2018176964A - Car vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automobile vehicle that can protect a battery on the lateral collision when multiple battery cases are arranged in a row in a horizontal direction.SOLUTION: An automobile vehicle in which multiple battery cases 20 are arranged in a row in a horizontal direction on a lower side of a floor panel 40 includes a movement mechanism for moving adjacent battery cases 20 respectively downward using input load on the lateral collision to inhibit damage of a battery due to physical interference between the battery cases on the lateral collision.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a motor vehicle in which a plurality of battery cases are arranged side by side in the left-right direction below a floor panel.

  DESCRIPTION OF RELATED ART The fuel cell vehicle of patent document 1 is known as a motor vehicle which has arrange | positioned the battery under the vehicle. The fuel cell vehicle supports a battery disposed in a floor tunnel by a sub-frame. The sub-frame is provided between the front and rear sub cross members extending in the vehicle width direction with the front end and rear end of the battery supported on the upper surface, and the middle sub extending between the front and rear sub cross members and extending in the vehicle width direction. A cross member and a pair of left and right sub side members which connect the front and rear sub cross members and the middle sub cross member and extend longitudinally along the side of the battery case, the middle sub cross member comprising a pair of A predetermined space is provided between the sub-side members (intermediate beam) and the lower surface of the battery.

  In this fuel cell vehicle, at the time of a side collision of the vehicle, the side impact load is dispersed to the left and right sub-side members via the middle beam of the middle sub cross member, and the left and right sub-side members are suppressed from being deformed toward the battery case. ing. Also, even if the middle beam of the middle sub cross member is bent, a space is provided between the middle beam and the battery case, making it difficult for the deformed middle beam to interfere with the front and rear middle portions of the battery case. There is. Furthermore, when a side impact load is input to one of the left and right sub-side members, the middle beams of the middle sub-cross member are joined by the upper surfaces of the left and right end portions being joined to the lower surfaces of the left and right sub-side members. The beams are deflected to project downward, which makes it more difficult for the deformed intermediate beam to interfere with the battery case.

  In addition, as a vehicle equipped with a battery under the vehicle, a battery-equipped vehicle described in Patent Document 2 is known. The battery-equipped vehicle includes a cross member which extends along the left-right direction of the vehicle and which has both end portions fixed to the pair of side members and supports the battery unit at the central portion. When load applied in the lateral direction of the vehicle acts on both end portions of the cross member, a deformation promoting portion which is bent so as to be convex downward is formed, and interference between the battery unit and the side sill is suppressed.

JP, 2009-23383, A JP 2014-226957 A

  By the way, in the vehicles described in Patent Documents 1 and 2, it is not assumed that a plurality of battery cases are arranged side by side, and in such a vehicle layout, adjacent battery cases at the time of a side collision are It is necessary to adopt a new battery protection structure in consideration of interference.

  The present invention has been made in view of the above circumstances, and an object thereof is an automobile vehicle capable of protecting a battery in the event of a side collision when a plurality of battery cases are arranged side by side in the left-right direction. To provide.

  According to the present invention, in order to achieve the above object, according to the present invention, a plurality of battery cases arranged side by side in the left and right direction under the floor panel and an adjacent battery case using input load at the time of side collision And a moving mechanism configured to move downward.

  According to this automobile vehicle, the adjacent battery cases are respectively moved downward by the moving mechanism at the time of a side collision, and damage to the batteries due to interference between the battery cases can be suppressed.

  In the above vehicle, the moving mechanism is connected to at least one of the upper surface and the lower surface of each of the battery cases and is formed between a plate portion extending in the left-right direction and the adjacent battery cases in the plate portion. It may have a bending part bent downward by the input load at the time.

  According to this automobile vehicle, the battery case connected to the plate portion also moves downward together with the plate portion by bending the bent portion of the plate portion downward at the side collision.

  In the above vehicle, the moving mechanism is connected to the upper surface of each of the battery cases and extends in the left and right direction, and the lower plate connected to the lower surface of each of the battery cases and extends in the left and right direction. A bent portion formed between the adjacent battery cases in the side plate portion and bent downward by an input load at the time of a side collision, and the lower plate portion when the upper plate portion is bent at the bent portion And a separation mechanism for separating the two battery cases adjacent to each other.

  According to this automobile vehicle, the battery case connected to the upper side plate portion is also moved downward together with the upper side plate portion when the bent portion of the upper side plate portion is bent downward at the side collision. At this time, the lower plate portion is separated, so that the battery case can be smoothly moved downward.

  In the above-mentioned vehicle, the separation mechanism is formed so as to protrude downward between the adjacent battery cases in the upper side plate portion, and the lower side portion is bent at the bending portion. It may have a projection in contact with the side plate to facilitate separation of the lower plate.

  According to this automobile vehicle, the lower plate portion can be separated more reliably by promoting the separation of the lower plate portion by the projecting portion of the upper plate portion at the side collision.

  In the above-mentioned vehicle, the projection may be formed so that the left and right dimensions become smaller downward.

  According to this automobile vehicle, since the lower end of the protrusion is formed small, the contact area between the protrusion and the lower plate at the time of a side collision is reduced, and the stress generated in the lower plate due to the protrusion is It can be enlarged.

  The above-mentioned automobile vehicle may be provided with a regulating portion which is provided in the lower side plate portion and which regulates separation beyond one of the separated lower side plate portions from a predetermined distance.

  According to this automobile vehicle, the lower plate portion after separation is kept within the predetermined distance by the restricting portion, and the battery case does not move in an unexpected direction together with the lower plate portion due to the impact at the side collision.

  In the above-described automobile vehicle, the respective opposing surfaces of the adjacent battery cases may be inclined downward and approach each other.

  According to this motor vehicle, at the time of a side collision, each battery case first moves downward. At this time, each battery case is inclined following the bent lower support plate, and the upper side relatively approaches and the lower side relatively separates as compared with the state before the collision. That is, the opposing surfaces of the battery cases are closer to parallel than before the collision. Thereafter, when a load is applied to one battery case and the battery case is moved toward the other battery case, the facing surfaces come in contact with each other. As described above, even after the battery cases are in contact with each other, the opposing surfaces are closer to parallel than before the collision, so that the battery cases are relatively easily moved downward.

  According to the present invention, when a plurality of battery cases are arranged side by side in the left-right direction, the adjacent battery cases are respectively moved downward by the moving mechanism at the time of a side collision and damage to the batteries due to interference between the battery cases It can be suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic external view of the motor vehicle which shows one Embodiment of this invention. It is AA sectional drawing of FIG. It is a BB sectional view of FIG. It is explanatory drawing which shows the state which the battery case moved downward at the time of a side collision. It is front sectional drawing of the motor vehicle which shows a modification. It is explanatory drawing which shows the state which the battery case moved downward at the time of a side collision. It is front sectional drawing of the motor vehicle which shows a modification. It is explanatory drawing which shows the state which the battery case moved downward at the time of a side collision. It is front sectional drawing of the motor vehicle which shows a modification. It is explanatory drawing which shows the state which the battery case moved downward at the time of a side collision. It is front sectional drawing of the motor vehicle which shows a modification. It is explanatory drawing which shows the state which the battery case moved downward at the time of a side collision. It is front sectional drawing of the motor vehicle which shows a modification. It is explanatory drawing which shows the state which the battery case moved downward at the time of a side collision.

  1 to 4 show an embodiment of the present invention, and FIG. 1 is a schematic external view of a motor vehicle, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a sectional view taken along the line BB of FIG. FIG. 4 is an explanatory view showing a state where the battery case has moved downward at the time of a side collision.

  As shown in FIG. 1, this motor vehicle 10 has a motor as a wheel drive source, and as shown in FIG. 2, a plurality of battery cells BT for supplying power to the motor are mounted. Each battery cell BT is accommodated in a state aligned with a box-shaped battery case 20. The material of the battery case 20 is arbitrary, but is made of, for example, a relatively rigid material such as metal or reinforced plastic.

  The automotive vehicle 10 has a vehicle body in which, for example, panel-like members obtained by press forming a steel plate are assembled and joined by spot welding or the like. The vehicle body has a side sill portion 30 disposed in a left-right pair and having a bag-like cross section in a front view, and a floor panel 40 forming a lower portion of the passenger compartment and connected to each side sill portion 30. The specific configuration of the side sill portion 30 is arbitrary, but for example, an outer panel disposed outside in the left-right direction, an inner panel disposed inside in the left-right direction to form a closed cross-section with the outer panel, and a front view And a reinforcement panel for dividing the closed cross section.

  Further, the automobile vehicle 10 has an upper support plate 50 and a lower support plate 60 which are disposed under the floor panel 40 and connected to the side sill portions 30. Although the material of the upper support plate 50 and the lower support plate 60 is arbitrary, for example, the upper support plate 50 and the lower support plate 60 are made of a relatively rigid material such as metal or reinforced plastic. In the present embodiment, the battery case 20 is disposed in a space defined by the side sill portions 30, the upper support plate 50, and the lower support plate 60. A plurality of battery cases 20 are arranged side by side in the left-right direction, and fixed to the upper support plate 50 and the lower support plate 60. That is, the upper support plate 50 is connected to the upper surface of each battery case 20 to form an upper plate portion extending in the lateral direction, and the lower support plate 60 is connected to the lower surface of each battery case to form a lower plate portion extending in the lateral direction. There is. Each battery case 20 is integrally formed with the upper side support plate 50 and the lower side support plate 60, and is detachable from each side sill portion 30.

  As shown in FIG. 3, the battery case 20 has a substantially rectangular parallelepiped shape, and is arranged below the floor panel 40 so as to be aligned in the front-rear direction and the left-right direction. In the present embodiment, the battery cases 20 are arranged in a left-right pair. The automotive vehicle 10 is provided with a moving mechanism for moving the adjacent battery cases 20 downward using the input load at the time of a side collision. In the present embodiment, the moving mechanism is formed between the battery cases 20 adjacent in the left-right direction in the upper side support plate 50, and has a bending portion 51 bent downward by an input load at the time of a side collision.

  As shown in FIG. 2, the bent portion 51 is formed thinner than the general portion of the upper support plate 50. Specifically, the bending portion 51 has a shape in which the upper side of the general portion is cut away in a cross section, and is bent downward when a compressive load is applied to the upper support plate 50 in the left-right direction. ing. In the present embodiment, the bending portion 51 is continuously formed in the front-rear direction at the left and right center of the upper support plate 50.

  According to the automobile vehicle 10 configured as described above, as shown in FIG. 4, the battery 51 is connected to the upper support plate 50 by bending the bent portion 51 of the upper support plate 50 downward at the time of a side collision. The case 20 also moves downward with the upper support plate 50. At this time, a relatively large stress is generated between the battery cases 20 adjacent in the left-right direction in the lower support plate 60, so the lower support plate 60 is broken at a predetermined broken portion 61 between the battery cases 20. . Thus, when the plurality of battery cases 20 are arranged side by side in the left-right direction in the automobile vehicle 10, the adjacent battery cases 20 are respectively moved downward by the moving mechanism at the time of a side collision, and interference between the battery cases 20 Damage to the battery cell BT due to

  Although the upper support plate 50 is provided with the bent portion 51 in the above embodiment, the lower support plate 60 may be provided with a bent portion, or the upper support plate 50 and the lower support may be provided. Bent portions may be provided on both of the plates 60. Further, although the bent portion 51 is continuously formed in the front-rear direction of the upper support plate 50, it may be formed intermittently.

  Although the upper support plate 50 is formed to be substantially flat in the above embodiment, the upper support plate 50 is formed to be inclined downward from the left and right outer sides toward the left and right central bending portions 51, The bending at the bending portion 51 may be promoted. Furthermore, it is also possible to form the upper support plate 50 so as to be inclined downward to the middle of each battery case 20 in the left-right direction, and omit the bending portion 51. In this case, the inclined portion of the upper support plate 50 forms a moving mechanism.

  Moreover, in the said embodiment, although the thing which the lower side support plate 60 fractures and separates with the stress which arises in the lower side support plate 60 was shown, the lower side support plate 60 was divided | segmented into right and left beforehand, and it compared Each battery case 20 may be moved following the movement without causing a large stress. In this case, when the upper support plate 50 is bent at the bending portion 51, the divided lower support plate 60 separates the lower support plate 60 between the battery cases 20 adjacent in the left-right direction. It has a mechanism.

  In the embodiment described above, the upper support plate 50 for supporting the battery cases 20 separately from the floor panel 40 is provided. However, the floor panel 40 is configured to support the battery cases 20, and the floor panel A moving mechanism may be provided to move the adjacent battery cases 20 downward using input load at the time of a side collision, such as a bent portion. In this case, the floor panel 40 is connected to the upper surface of each battery case 20 and forms a plate portion extending in the left-right direction. Furthermore, the upper support plate 50 may be omitted and each battery case 20 may be supported only by the lower support plate 60. In this case, the lower support plate 60 may be provided with a bent portion as in the above embodiment, or the lower support plate 60 may be divided into right and left.

  Moreover, in the said embodiment, although what each arranged two battery cases 20 in the left-right direction was shown, three or more battery cases 20 may be arranged in the left-right direction. In this case, at least one position in the left-right direction may be provided with a moving mechanism for moving the adjacent battery case 20 downward using an input load at the time of a side collision. In addition to the lateral direction, a moving mechanism may be provided to move the adjacent battery case 20 downward using the input load at the time of frontal collision or rearal collision also in the front-rear direction.

  For example, as shown in FIG. 5, the lower support plate 60 may be provided with a restricting portion 70 for restricting the separation beyond one of the separated lower support plate 60 and the other predetermined distance. As shown in FIG. 5, the restricting portion 70 is configured to be stretchable in the left-right direction, and in a relaxed state, both ends are fixed to the lower support plate 60 across the portion to be broken. Then, as shown in FIG. 6, when the lower support plate 60 separates at the time of a side collision, the restricting portion 70 becomes in a tensioned state and keeps the lower support plate 60 after separation within a predetermined distance. As a result, the battery case 20 together with the lower support plate 60 does not move in an unexpected direction due to an impact at the time of a side collision. In addition, although the distance of the lower side supporting plate 60 after isolation | separation set by the control part 70 is arbitrary, it is preferable to set it as the range which each battery case 20 does not contact the ground.

  For example, as shown in FIG. 7, when the upper support plate 50 is formed to project downward between the battery cases 20 adjacent in the left-right direction, and the upper support plate 50 is bent at the bending portion 51. A projection 52 may be provided in contact with the lower support plate 60 to facilitate the separation of the lower support plate 60. According to this automobile vehicle 10, as shown in FIG. 8, the separation of the lower support plate 60 is promoted by the projection 52 of the upper support plate 50 at the time of a side collision, and the lower support plate 60 is more reliably separated. be able to.

  Further, for example, as shown in FIG. 9, the opposing surfaces 21 of the battery cases 20 adjacent in the left-right direction may be inclined in the direction approaching each other downward. According to this motor vehicle 10, at the time of a side collision, as shown in FIG. 10, first, each battery case 20 moves downward. At this time, each battery case 20 is inclined following the bent lower support plate 60, and the upper side relatively approaches and the lower side relatively separates as compared with the state before the collision. That is, the opposing surfaces 21 of the battery cases 20 are closer to parallel than before the collision. Thereafter, when a load is applied to the battery case 20 from the one side sill portion 30, the one battery case 20 moves toward the other battery case 20, and the facing surfaces 21 come in contact with each other. As described above, even after the battery cases 20 are in contact with each other, since the facing surfaces 21 are closer to parallel than before the collision, the battery cases 20 are relatively easily moved downward.

  For example, as shown in FIG. 11, the opposing surfaces 21 of the battery cases 20 adjacent in the left-right direction incline downward in the direction approaching each other, and the upper support plate 50 is bent in the upper support plate 50. When bent at the portion 51, a protrusion 53 may be provided to contact the lower support plate 60 to promote separation of the lower support plate 60. In FIG. 11, the protrusion 53 is formed so that the left and right dimensions decrease downward. According to this automobile vehicle 10, since the lower end of the projection 53 is formed small, as shown in FIG. 12, the contact area between the projection 53 and the lower support plate 60 at the time of a side collision is reduced to project The stress generated in the lower support plate 60 due to the portion 53 can be increased. Further, as shown in FIG. 12, when the upper support plate 50 is bent at the bending portion 51, the protruding portion 53 and the battery case 20 adhere to each other. Thereafter, when a load is applied to the battery case 20 from the one side sill portion 30, the one battery case 20 is guided downward by the projecting portion 53, and the battery case 20 can be further smoothly moved downward. .

  For example, as shown in FIG. 13, instead of the lower support plate 60, a cover member 80 may be provided to cover the lower side of each battery case 20. The cover member 80 is thinner than the upper support plate 50. In FIG. 14, each battery case 20 is fixed to the upper side support plate 50, and the cover member 80 is in contact with each battery case 20 but does not actively support each battery case 20. The cover member 80 is divided between the battery cases 20 adjacent in the left-right direction, and moves so as to follow the battery cases 20 without relatively large stress. In FIG. 13, the divided cover members 80 are vertically stacked between the battery cases 20 to form a stacked portion 81. According to this automobile vehicle 10, at the time of a side collision, as shown in FIG. 14, the divided cover member 80 follows the battery cases 20 and inclines separately, but the contact state between the battery cases 20 Keep

  As mentioned above, although embodiment of this invention was described, embodiment described above does not limit the invention which concerns on a claim. In addition, it should be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

DESCRIPTION OF SYMBOLS 10 automobile vehicle 20 battery case 30 side sill part 40 floor panel 50 upper side support plate 51 bending part 52 protrusion part 53 protrusion part 60 lower side support plate 61 fracture part 70 regulation part 80 cover member 81 lamination part

Claims (7)

A plurality of battery cases arranged in the left-right direction below the floor panel;
An automobile vehicle comprising: a moving mechanism for respectively moving the adjacent battery cases downward using an input load at the time of a side collision. The movement mechanism is
A plate portion connected to at least one of the upper surface and the lower surface of each of the battery cases and extending in the left-right direction;
The vehicle according to claim 1, further comprising: a bent portion formed between the adjacent battery cases in the plate portion and bent downward by an input load at the time of a side collision. The movement mechanism is
An upper side plate portion connected to the upper surface of each of the battery cases and extending in the left-right direction;
A lower plate portion connected to the lower surface of each of the battery cases and extending in the left-right direction;
A bent portion formed between the adjacent battery cases in the upper plate portion and bent downward by an input load at the time of a side collision;
The vehicle according to claim 1, further comprising: a separation mechanism that separates the lower plate portion between the adjacent battery cases when the upper plate portion is bent at the bending portion.   The separation mechanism is formed so as to protrude downward between the adjacent battery cases in the upper side plate portion, and when the upper side plate portion is bent at the bent portion, the separation mechanism contacts the lower side plate portion. The motor vehicle according to claim 3, further comprising: a protrusion which facilitates separation of the lower plate portion.   The vehicle according to claim 4, wherein the protrusion is formed such that the left and right dimensions thereof decrease downward.   The motor vehicle according to any one of claims 3 to 5, further comprising a restricting portion provided on the lower side plate portion and restricting separation beyond one of the separated lower side plate portions and a predetermined distance from each other.   The motor vehicle according to any one of claims 2 to 6, wherein the respective opposing surfaces of the adjacent battery cases are inclined downward and approach each other.

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