Vehicle understructure

Abstract

The present invention provides a vehicle understructure that can adequately protect components located within the battery pack from externally applied loads. [Solution] The vehicle's understructure comprises a vehicle body 1 and a battery pack 10 attached to the lower part of the vehicle body 1. The battery pack 10 includes a battery case 12, a battery 11 housed in the battery case 12, and a routing component 40 housed in the battery case 12 and positioned between a pair of left and right cross members 6L and 6R extending in the vehicle width direction. At least a portion of the routing component 40 overlaps the cross members 6L and 6R when viewed from the vehicle width direction, and the battery pack 10 further includes a protective member 30 positioned between the cross members 6L and 6R and the routing component 40 in the vehicle width direction.

Description

Technical Field

[0001] The present invention relates to a lower structure of a vehicle.

Background Art

[0002] In recent years, research and development on secondary batteries that contribute to energy efficiency have been conducted to enable more people to access affordable, reliable, sustainable, and advanced energy.

[0003] In addition, in vehicles where a secondary battery is attached to the vehicle body as a battery pack, research and development on the crash safety performance of the vehicle have been focused. For example, Patent Document 1 and Patent Document 2 describe structures for protecting battery modules, auxiliary equipment, and high-voltage electric wires arranged in the battery pack from side impact loads input by a side collision of the vehicle.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Depending on the attachment of the battery pack to the vehicle body, there may be a case where the cross member overlaps with the components inside the battery pack when viewed in the vehicle width direction. In such a case, it is necessary to consider a structure that can appropriately protect the components inside the battery pack from the collision load transmitted from the cross member by a side collision of the vehicle.

[0006] The present invention provides a lower structure of a vehicle that can appropriately protect components arranged inside a battery pack against a load input from the outside. [Means for solving the problem]

[0007] The present invention The car body and, A vehicle understructure comprising a battery pack attached to the lower part of the vehicle body, The aforementioned battery pack is Battery case and The battery housed in the aforementioned battery case, It comprises a predetermined component housed in the battery case and positioned between a pair of left and right cross members extending in the vehicle width direction, The aforementioned predetermined component is provided so that at least a portion of it overlaps the cross member when viewed from the vehicle width direction, The battery pack further includes a protective member positioned between the cross member and the predetermined component in the vehicle width direction. [Effects of the Invention]

[0008] According to the present invention, since a protective member is positioned between the cross member and a predetermined component, when a collision load is applied to the cross member due to a side collision of a vehicle or the like, the protective member can absorb the collision load and properly protect the predetermined component. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view of the understructure of a vehicle according to one embodiment of the present invention. [Figure 2] Figure 2 is a perspective view of the battery pack 10. [Figure 3] Figure 3 is an exploded perspective view of the battery pack 10. [Figure 4] Figure 4 is a cross-sectional view taken along line AA in Figure 1. [Figure 5] Figure 5 is a cross-sectional view along line BB in Figure 1. [Figure 6] Figure 6 is an enlarged cross-sectional view of the protective member 30 in Figure 5. [Modes for carrying out the invention]

[0010] Hereinafter, one embodiment of the vehicle substructure of the present invention will be described based on the attached drawings. The drawings should be viewed in the direction of the reference numerals. Furthermore, in order to simplify and clarify the explanation in this specification, the front, rear, left, right, and up directions are described according to the direction as seen from the driver of the vehicle, and in the drawings, the front of the vehicle is indicated as Fr, the rear as Rr, the left as L, the right as R, the top as U, and the bottom as D.

[0011] Figure 1 is a perspective view of the vehicle's understructure. The vehicle's understructure comprises a vehicle body 1 and a battery pack 10 mounted on the underside of the vehicle body 1. The vehicle is an electric vehicle such as a battery electric vehicle, a hybrid vehicle (including a plug-in hybrid vehicle), or a fuel cell vehicle. The battery pack 10 stores electricity that is supplied to the motor and other power sources of the vehicle.

[0012] The vehicle body 1 constitutes the vehicle's frame, and Figure 1 illustrates a part of the frame. The vehicle body 1 includes, for example, a pair of left and right side sills 2 (2L, 2R) extending in the longitudinal direction, a center tunnel 4 provided between the left and right side sills 2 and extending in the longitudinal direction, and a plurality of cross members 6 provided between the left and right side sills 2 and extending in the lateral direction. Each cross member 6 is composed of a pair of left and right cross members 6L, 6R provided on both the left and right sides of the center tunnel 4. The left cross member 6L is provided between the left side sill 2L and the center tunnel 4, and the right cross member 6R is provided between the right side sill 2R and the center tunnel 4.

[0013] The battery pack 10 is positioned below a plurality of cross members 6. The battery pack 10 is attached to a pair of left and right side sills 2 and secured by fasteners such as bolts.

[0014] FIG. 2 is a perspective view of the battery pack 10. FIG. 3 is an exploded perspective view of the battery pack 10. The battery pack 10 includes a battery 11, a battery case 12 that houses the battery 11, and an under cover 18 formed of a heat insulating material such as foamed polypropylene and covering the battery case 12 from below.

[0015] A plurality of batteries 11 are housed in the battery case 12. The battery 11 is, for example, a lithium ion battery or a nickel hydrogen battery. Each battery 11 includes a plurality of battery cells. Although illustration is omitted, the battery cell includes a positive electrode, a negative electrode, an electrolyte, and an exterior body that houses these, and is, for example, a pouch type cell, a square cell, or a cylindrical cell. The electrolyte may be liquid or solid. The battery 11 may be configured as a battery module in which a plurality of battery cells (for example, pouch type cells or square cells) are stacked and modularized, or may be configured as a plurality of non-modularized battery cells.

[0016] The battery case 12 has a case body 13 on which the battery 11 is placed and a battery cover 14 that covers the case body 13 from above.

[0017] The case body 13 has a base plate 21 on which the battery 11 is placed and a frame member 22 joined to the base plate 21. The case body 13 has a tray shape capable of housing the battery 11.

[0018] The base plate 21 has a substantially rectangular shape in a top view. The base plate 21 is formed by pressing a metal material. The metal material of the base plate 21 is, for example, aluminum or an aluminum alloy, and the weight of the battery case 12 can be reduced. Note that the base plate 21 may be made of iron.

[0019] A water jacket 50 is provided at the bottom of the base plate 21, and the temperature of the battery 11 is regulated (cooled or heated) by the refrigerant circulating through the water jacket 50. The under cover 18 is provided to cover the water jacket 50 from below.

[0020] The frame member 22 is manufactured by extrusion molding of a metal material. The frame member 22 is, for example, an aluminum extruded material manufactured by extrusion molding of aluminum or an aluminum alloy. Because the frame member 22 is formed from an aluminum extruded material, the frame member 22 is highly rigid and lightweight. The frame member 22 is joined to the upper surface of the base plate 21 by welding or the like, and forms the side wall portion of the case body 13.

[0021] The case body 13 has a front storage space 24 located at the front for housing the battery 11, a rear storage space 25 located at the rear for housing the battery 11, and a routing space 26 located between the front storage space 24 and the rear storage space 25 for routing busbars 41, harnesses 42, etc. (see Figure 5). In the following description, the components routed in the routing space 26 will also be referred to as routing components 40. The front storage space 24, the rear storage space 25, and the routing space 26 are partitioned by a frame member 22.

[0022] The front storage space 24 and the rear storage space 25 are each partitioned into a roughly rectangular shape when viewed from above by a frame member 22. The front storage space 24 houses the battery 11 in one layer. The rear storage space 25 houses the battery 11 in two layers, vertically, via a bracket 16. In addition to the battery 11, the front storage space 24 and the rear storage space 25 may also house, for example, an electrical connection box equipped with electrical components (input / output circuits, fuses, etc.) connected to the battery 11, or a control device such as an ECU (Electronic Control Unit). Furthermore, the number of vertical layers of the battery 11 housed in the front storage space 24 and the rear storage space 25 can be arbitrarily set; for example, the rear storage space 25 may house the battery 11 in one layer, or the front storage space 24 may house the battery 11 in two layers.

[0023] The routing space 26 extends in the longitudinal direction from the center of the case body 13 in the vehicle width direction, connecting the front storage space 24 and the rear storage space 25. The routing space 26 is located in a position that overlaps with the center tunnel 4 when viewed from above.

[0024] The wiring space 26 contains wiring components 40, such as busbars 41, which are high-voltage wiring that electrically connects the battery 11 housed in the front housing space 24 and the battery 11 housed in the rear housing space 25, and harnesses 42 that connect to various electrical equipment housed in the battery case 12. The wiring components 40 are not limited to electrical components and may also include pipes and hoses connected to the water jacket 50 through which refrigerant flows.

[0025] In the routing space 26, components such as electrical connection boxes and control devices may be placed in place of, or in addition to, the routing components 40 that are routed in the front-rear direction. That is, predetermined components (routing components 40, electrical connection boxes, control devices, etc.) are placed in the routing space 26. Below, an example will be given in which the predetermined components placed in the routing space 26 are routing components 40 (specifically busbars 41 and harnesses 42).

[0026] The portion of the frame member 22 that demarcates the routing space 26 functions as a protective member 30 that protects the routing components 40 from external impacts. Details of the protective member 30 will be described later.

[0027] On both the left and right sides of the wiring space 26, there are cross member placement spaces 27 in which one of the multiple cross members 6 (6L, 6R) is placed. When the battery pack 10 is attached to the vehicle body 1, the cross member 6 is placed in the cross member placement space 27. This cross member 6 is joined to the center tunnel 4. In addition to the left and right pair of side sills 2, the battery pack 10 is also fixed to the cross member 6 placed in the cross member placement space 27 by fastening members such as bolts.

[0028] When the battery pack 10 is attached to the vehicle body 1, the protective member 30 and the routing component 40 are positioned to overlap the cross member 6 when viewed from the vehicle width direction. With this configuration, the height dimension of the understructure of the vehicle to which the battery pack 10 is attached can be shortened, and as a result, the overall height of the vehicle can be reduced.

[0029] Furthermore, a vehicle seat (not shown) is mounted on top of the cross member 6, which is located in the cross member arrangement space 27. Since the battery 11 is not located below this cross member 6, the transmission of load from the seat to the battery 11 can be suppressed.

[0030] The battery cover 14 is fixed to the upper surface of the frame member 22 and seals the inside of the battery case 12. More specifically, the battery cover 14 has a shape that conforms to the upper surface of the frame member 22 that partitions the front storage space 24, the rear storage space 25, and the wiring space 26, and covers them from above. The battery cover 14 does not cover the portion where the cross member arrangement space 27 is provided. That is, the battery cover 14 has a shape that is narrow in the vehicle width direction in the central part in the front-rear direction.

[0031] Next, the configuration of the protective member 30 that protects the routing component 40 will be described in detail with reference to Figures 4 to 6.

[0032] Figure 4 is a cross-sectional view along line AA of Figure 1, showing the arrangement of the cross member 6, center tunnel 4, and protective member 30 as viewed from the vehicle width direction. Figure 5 is a cross-sectional view along line BB of Figure 1, showing the arrangement of the cross member 6, center tunnel 4, and protective member 30 as viewed from the front-rear direction. Figure 6 is an enlarged cross-sectional view of the vicinity of the protective member 30 in Figure 5. The white arrows in Figure 6 represent the transmission of collision loads input by a side collision of the vehicle, etc.

[0033] The protective member 30 is positioned between the left and right pair of cross members 6L and 6R and the routing component 40 in the vehicle width direction. Specifically, the protective member 30 is positioned between the left cross member 6L and the routing component 40, and between the right cross member 6R and the routing component 40 in the vehicle width direction. In other words, when viewed from the vehicle width direction, the left and right pair of cross members 6L and 6R, the protective member 30, and the routing component 40 are positioned so as to overlap each other.

[0034] With this configuration, when a collision load is applied from the side sill 2 to the cross member 6 due to a side collision of the vehicle, the protective member 30 can receive the collision load transmitted by the cross member 6, thereby protecting the routing component 40.

[0035] The center tunnel 4 covers the routing components 40 and the protective member 30 from above, and at least a portion of it overlaps the cross members 6L and 6R when viewed from the vehicle width direction. More specifically, at least a portion of the center tunnel 4 overlaps the cross members 6L, 6R and the protective member 30 when viewed from the vehicle width direction. In other words, at least a portion of the center tunnel 4 is provided between the left cross member 6L and the protective member 30, and between the right cross member 6R and the protective member 30 in the vehicle width direction.

[0036] With this configuration, in the event of a side collision of the vehicle, the collision load transmitted by the cross member 6 is input to the center tunnel 4 before the protective member 30 receives it, thereby improving the protective performance of the stabilization component 40.

[0037] The center tunnel 4 is provided with a deformable portion 4a that is more easily deformed than the protective member 30 when a collision load is applied to the cross member 6. Specifically, the deformable portion 4a has a flat plate shape that extends in the horizontal direction and is a part that is easily crushed when it collides with the protective member 30 due to a collision load from the side.

[0038] With this configuration, when a collision load is applied from the cross member 6 to the center tunnel 4, the deformable portion 4a of the center tunnel 4 deforms (specifically, collapses) to absorb the impact. Therefore, the protective performance of the routing component 40 can be further enhanced.

[0039] The protective member 30 is positioned at a distance from the securing component 40 in the vehicle width direction. That is, even if a collision load is applied to the protective member 30 in the vehicle width direction and the position of the protective member 30 in the vehicle width direction shifts, the protective member 30 will not immediately collide with the securing component 40.

[0040] With this configuration, when a collision load is transmitted from the cross member 6 to the protective member 30, the influence that the protective member 30 may have on the routing component 40 can be reduced.

[0041] To describe the structure of the protective member 30 in more detail, the protective member 30 has a pair of left and right wall sections 31L, 31R positioned between a pair of left and right cross members 6L, 6R and the routing component 40 in the vehicle width direction, and a connecting section 32 that connects the pair of left and right wall sections 31L, 31R. The pair of left and right wall sections 31L, 31R extend in the vertical direction, and the connecting section 32 extends in the horizontal direction. When viewed from the vehicle width direction, the pair of left and right wall sections 31L, 31R are provided overlapping the cross members 6L, 6R, the routing component 40, and the center tunnel 4.

[0042] Since the protective member 30 has a pair of left and right wall sections 31L and 31R and a connecting section 32 that connects them, for example, when the left wall section 31L receives a collision load transmitted from the left cross member 6L, the collision load can be transmitted to the right cross member 6R via the connecting section 32. Therefore, the protective performance of the stabilization component 40 can be enhanced.

[0043] In this embodiment, the left and right pair of wall sections 31L, 31R and the connecting section 32 partition a space that is open at the top (i.e., the wiring space 26), and the wiring components 40 are laid out in this space. Specifically, the connecting section 32 is connected to the lower ends of the left and right pair of wall sections 31L, 31R, and the protective member 30 has a substantially U-shape with a cross section that is open at the top.

[0044] With this configuration, the routing of the routing components 40 into the space partitioned within the protective member 30 becomes easier, improving the ease of assembly of the battery pack 10.

[0045] Furthermore, the pair of left and right wall sections 31L, 31R and the connecting section 32 may partition a space that is open at the bottom. Specifically, the connecting section 32 may be located at the upper ends of the pair of left and right wall sections 31L, 31R.

[0046] As an alternative configuration, the left and right pair of wall sections 31L, 31R and the connecting section 32 may partition and form a space that constitutes a closed cross-section (i.e., a routing space 26), and the routing component 40 may be routed within this space. In this configuration, the connecting section 32 is provided in an upper and lower pair, with the upper connecting section 32 connected to the upper ends of the left and right pair of wall sections 31L, 31R, and the lower connecting section 32 connected to the lower ends of the left and right pair of wall sections 31L, 31R.

[0047] According to this modified configuration, the rigidity of the protective member 30 can be increased, and the protective performance of the routing component 40 can be improved.

[0048] In configurations such as this embodiment and its modified examples, it is preferable that the connecting portion 32 of the protective member 30 is positioned to overlap the cross member 6 when viewed from the vehicle width direction.

[0049] With this configuration, for example, when the left wall portion 31L receives the collision load transmitted from the left cross member 6L, the collision load is effectively transmitted from the connecting portion 32 to the right cross member 6R. Therefore, the protective performance of the shield component 40 can be further enhanced.

[0050] Furthermore, as mentioned above, the protective member 30 is made of the frame member 22 of the battery case 12 and is made of a highly rigid aluminum extruded material. Therefore, the protective performance of the wiring component 40 can be enhanced.

[0051] Although one embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to this embodiment. It is clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these are also understood to naturally fall within the technical scope of the present invention. Furthermore, the components of the above embodiment may be combined in any way without departing from the spirit of the invention.

[0052] For example, in the embodiment described above, the predetermined component (e.g., routing component 40) positioned between the left and right pair of cross members 6L and 6R was positioned between the battery 11 housed in the front housing space 24 and the battery 11 housed in the rear housing space 25, but is not limited to this. For example, the predetermined component (e.g., routing component 40) positioned between the left and right pair of cross members 6L and 6R may be positioned between the battery 11 housed in the battery case 12 and the drive source (motor, power converter, etc.) or charger positioned at the rear and / or front of the battery pack 10.

[0053] This specification contains at least the following information. Note that the components etc. in parentheses indicate those corresponding to the embodiments described above, but are not limited thereto.

[0054] (1) Vehicle body (vehicle body 1) A vehicle understructure comprising a battery pack (battery pack 10) attached to the lower part of the vehicle body, The aforementioned battery pack is Battery case (battery case 12), The battery (battery 11) housed in the aforementioned battery case, The battery case is housed in the aforementioned battery case and has a predetermined component (relay component 40) positioned between a pair of left and right cross members (a pair of left and right cross members 6L, 6R) that extend in the vehicle width direction, The aforementioned predetermined component is provided so that at least a portion of it overlaps the cross member when viewed from the vehicle width direction, The battery pack further includes a protective member (protective member 30) positioned between the cross member and the predetermined component in the vehicle width direction. The undercarriage of the vehicle.

[0055] According to (1), the battery pack has a structure in which a predetermined component is positioned between a pair of left and right cross members, which allows the height dimension of the vehicle's understructure to be shortened, and as a result, the overall height of the vehicle can be reduced. Furthermore, in such a structure, a protective member is positioned between the cross member and the predetermined component, so that when a collision load is applied to the cross member due to a side collision of the vehicle, etc., the protective member can absorb the collision load and properly protect the predetermined component.

[0056] (2) The understructure of the vehicle described in (1), The vehicle body has a tunnel section (center tunnel 4) positioned between the pair of left and right cross members, The tunnel section covers the predetermined component and the protective member from above, and at least a portion of it overlaps the cross member when viewed from the vehicle width direction. The undercarriage of the vehicle.

[0057] According to (2), when a collision load is applied to the cross member due to a side collision of a vehicle, the collision load is applied to the tunnel section before the protective member receives the collision load transmitted by the cross member, thereby improving the protective performance of the specified component.

[0058] (3) The understructure of the vehicle described in (2), The tunnel section is provided with a deformable portion (deformable portion 4a) that is more easily deformed than the protective member when a load is applied to the cross member. The undercarriage of the vehicle.

[0059] According to (3), the tunnel section can deform and absorb the collision energy before the protective member receives the collision load, thus further enhancing the protective performance of the specified component.

[0060] (4) The understructure of a vehicle as described in any of (1) to (3), The protective member is provided spaced apart from the predetermined component in the vehicle width direction. The undercarriage of the vehicle.

[0061] According to (4), when a load is transmitted from the cross member to the protective member due to a vehicle collision or the like, the impact on the specified component from the protective member can be reduced.

[0062] (5) The understructure of a vehicle as described in any of (1) to (4), The protective member is A pair of left and right wall portions (a pair of left and right wall portions 31L, 31R) are arranged between the pair of left and right cross members and the predetermined component in the vehicle width direction, It has a connecting portion (connecting portion 32) that connects the pair of left and right wall portions, The undercarriage of the vehicle.

[0063] According to (5), the protective member has a pair of left and right wall sections and a connecting section that connects them. Therefore, when the wall section of the protective member receives a collision load transmitted from one cross member, the collision load can be transmitted to the other cross member via the connecting section. Thus, the protective performance of a given component can be enhanced.

[0064] (6) The understructure of the vehicle described in (5), The pair of left and right wall sections and the connecting section divide a space that is open above or below, The aforementioned predetermined component is arranged in the space. The undercarriage of the vehicle.

[0065] According to (6), the placement of predetermined components into the partitioned space within the protective member becomes easier, improving the ease of assembling the battery pack.

[0066] (7) The understructure of the vehicle described in (5), The pair of left and right wall sections and the connecting section divide and form a space that constitutes a closed cross-section. The aforementioned predetermined component is placed in the space, The undercarriage of the vehicle.

[0067] According to (7), since the predetermined component is placed in a closed cross-sectional space partitioned within the protective member, the protective performance of the predetermined component can be enhanced.

[0068] (8) The understructure of a vehicle as described in any of (5) to (7), The aforementioned connecting portion is positioned to overlap the cross member when viewed from the vehicle width direction. The undercarriage of the vehicle.

[0069] According to (8), when the wall portion of the protective member receives the collision load transmitted from one cross member, the collision load is effectively transmitted from the connecting portion to the other cross member. Therefore, the protective performance of the specified component can be further enhanced.

[0070] (9) The understructure of a vehicle as described in any of (1) to (8), The protective member is made of an aluminum extruded material. The undercarriage of the vehicle.

[0071] According to (9), since the protective member is made of an aluminum extruded material, the rigidity of the protective member can be increased, and the protective performance of the specified part can be improved.

[0072] (10) The understructure of a vehicle as described in any of (1) to (9), The battery includes a first battery located at the front of the battery case and a second battery located at the rear of the battery case. The predetermined component and the protective member are arranged between the first battery and the second battery. The undercarriage of the vehicle.

[0073] According to (10), a predetermined component placed between the front and rear batteries (first battery and second battery) can be protected by a protective member. [Explanation of Symbols]

[0074] 1. Vehicle body 4. Center Tunnel (Tunnel Section) 4a Deformed part 6L, 6R Pair of left and right cross members 10 Battery Packs 11 batteries 12 Battery Cases 30 Protective components 31L, 31R: A pair of left and right wall sections 32 Connecting part 40. Distribution components (specified components)

Claims

1. The car body and, A vehicle understructure comprising a battery pack attached to the lower part of the vehicle body, The aforementioned battery pack is Battery case and The battery housed in the aforementioned battery case, It comprises a predetermined component housed in the battery case and positioned between a pair of left and right cross members extending in the vehicle width direction, The aforementioned predetermined component is provided so that at least a portion of it overlaps the cross member when viewed from the vehicle width direction, The battery pack further comprises a protective member positioned between the cross member and the predetermined component in the vehicle width direction. The undercarriage of the vehicle.

2. The understructure of the vehicle according to claim 1, The vehicle body has a tunnel section positioned between the pair of left and right cross members, The tunnel section covers the predetermined component and the protective member from above, and at least a portion of it overlaps the cross member when viewed from the vehicle width direction. The undercarriage of the vehicle.

3. The understructure of the vehicle according to claim 2, The tunnel section is provided with a deformable portion that is more easily deformed than the protective member when a load is applied to the cross member. The undercarriage of the vehicle.

4. A vehicle substructure according to any one of claims 1 to 3, The protective member is provided spaced apart from the predetermined component in the vehicle width direction. The undercarriage of the vehicle.

5. A vehicle substructure according to any one of claims 1 to 3, The protective member is A pair of left and right wall portions are arranged between the pair of left and right cross members and the predetermined component in the vehicle width direction, A connecting portion that connects the pair of left and right wall portions, The undercarriage of the vehicle.

6. The vehicle substructure according to claim 5, The pair of left and right wall sections and the connecting section divide a space that is open above or below, The aforementioned predetermined component is arranged in the space. The undercarriage of the vehicle.

7. The vehicle substructure according to claim 5, The pair of left and right wall sections and the connecting section divide and form a space that constitutes a closed cross-section. The aforementioned predetermined component is arranged in the space. The undercarriage of the vehicle.

8. The vehicle substructure according to claim 5, The aforementioned connecting portion is positioned to overlap the cross member when viewed from the vehicle width direction. The undercarriage of the vehicle.

9. A vehicle substructure according to any one of claims 1 to 3, The protective member is made of an aluminum extruded material. The undercarriage of the vehicle.

10. A vehicle substructure according to any one of claims 1 to 3, The battery includes a first battery located at the front of the battery case and a second battery located at the rear of the battery case. The predetermined component and the protective member are arranged between the first battery and the second battery. The undercarriage of the vehicle.

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