Battery mounting structure

Abstract

To provide a battery loading structure which can suppress vibration of a vehicle body and improve impact resistance performance at the time of collision.SOLUTION: A vehicle 10 includes a coupling part 30 between a vehicle body 12 constituting a skeleton of the vehicle 10 and a battery case 24 loaded at a lower side of a floor panel 20 of the vehicle 10 where an elastic member 60 lies between a first coupling member 40 connected to the vehicle body 12 side and a second coupling member 42 connected to the battery case 24 side. Thereby, the battery case 24 that is a heavy load works as a dynamic damper to suppress vibration of the vehicle body 12. A projection 50 projected from the second coupling member 42 is arranged at a first interstice G between the first coupling member 40 and the second coupling member 42. Load that is inputted into the vehicle body 12 is rapidly transmitted through the projection 50 to the battery case 24 side to be capable of distributing the load so that impact resistance performance at the time of collision can be improved.SELECTED DRAWING: Figure 3

Description

Technical Field

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[0001] The present invention relates to a battery mounting structure for a vehicle.

Background Art

[0002] Patent Document 1 discloses that an elastic support member is provided between a battery device and a vehicle body, and the battery device is elastically supported by the vehicle body, so that the battery device functions as a dynamic damper to suppress the vibration of the vehicle body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, from the viewpoint of improving the impact resistance performance during a collision, it is desirable to quickly transmit the load input to the vehicle body to the battery case side to disperse the load. However, in Patent Document 1, since the battery device is elastically supported by the vehicle body, there is room for improvement in ensuring a quick load transmission path.

[0005] The present invention has been made in consideration of the above facts, and an object thereof is to obtain a battery mounting structure capable of suppressing the vibration of the vehicle body and improving the impact resistance performance during a collision.

Means for Solving the Problems

[0006] The battery mounting structure according to claim 1 comprises: a body constituting the frame of a vehicle; a battery case coupled to the body and mounted under the floor of the vehicle; a first coupling member coupled to the body side at the coupling portion between the body and the battery case; a second coupling member coupled to the battery case side and mounted with a predetermined gap between it and the first coupling member; an elastic member positioned in the gap and interposed between the first coupling member and the second coupling member; and a protruding portion provided protruding into the gap from one of the first coupling member and the second coupling member. The second connecting member has a support member that extends from the side of the battery case toward the body, and the second connecting member is connected to the battery case via the support member. .

[0007] In the battery mounting structure according to claim 1, an elastic member is interposed between a first connecting member connected to the body and a second connecting member connected to the battery case at the joint between the body, which constitutes the vehicle's frame, and the battery case mounted under the vehicle's floor. As a result, the heavy battery case functions as a dynamic damper, suppressing vibrations of the body.

[0008] Furthermore, a protrusion is provided in the gap between the first and second connecting members, extending from either the first or second connecting member. Therefore, the load applied to the body can be quickly transmitted to the battery case side via the protrusion, thereby distributing the load and improving impact resistance during collisions. Furthermore, the battery case and the second connecting member are connected via a support member that extends from the side of the battery case towards the body. This allows the connection point between the body and the battery case to be positioned on the side of the battery case, and the battery case is located under the vehicle. Compared to a configuration that provides elastic support from one side, this configuration allows for a reduction in the mounting space for the battery case in the vehicle height direction. As a result, the space efficiency under the vehicle is improved, making it easier to expand the passenger compartment space above the floor and to secure sufficient height for the underside of the vehicle body.

[0011] The battery mounting structure according to claim 2 comprises a body constituting the frame of a vehicle, a battery case coupled to the body and mounted under the floor of the vehicle, a first coupling member coupled to the body side at the coupling portion between the body and the battery case, a second coupling member coupled to the battery case side and mounted with a predetermined gap between it and the first coupling member, an elastic member positioned in the gap and interposed between the first coupling member and the second coupling member, and a protruding portion provided protruding into the gap from one of the first coupling member and the second coupling member, wherein the tip of the protruding portion is spaced apart from the opposing surface. The battery mounting structure according to claim 3 comprises a body constituting the frame of a vehicle, a battery case coupled to the body and mounted under the floor of the vehicle, a first coupling member coupled to the body side at the coupling portion between the body and the battery case, a second coupling member coupled to the battery case side and mounted with a predetermined gap between it and the first coupling member, an elastic member disposed in the gap and interposed between the first coupling member and the second coupling member, and a protruding portion provided protruding into the gap from one of the first coupling member and the second coupling member, wherein the first coupling member and the second coupling member are formed in a cylindrical shape with the vehicle's vertical direction as their axial direction, the first coupling member is inserted inside the second coupling member, and the elastic member has a first elastic portion disposed on one axial side with respect to the protruding portion, and a second elastic portion disposed on the other axial side with respect to the protruding portion. Furthermore, claim 4 The battery mounting structure relating to this is Claim 1 In this configuration, the support member has a first support portion positioned on the outside of the vehicle relative to the second connecting member, and a second support portion positioned on the inside of the vehicle relative to the second connecting member.

[0012] In the battery mounting structure according to claim 2, the tip of the protrusion is provided spaced apart from the opposing surface, so that the tip of the protrusion does not interfere with the opposing surface when the body and battery case vibrate. As a result, the generation of abnormal noise caused by contact between the protrusion and the opposing surface when the body and battery case vibrate can be suppressed. In the battery mounting structure according to claim 3, the first and second connecting members are formed in a cylindrical shape with the vehicle's vertical direction as their axial direction, and the first connecting member is inserted inside the second connecting member. Furthermore, the elastic member has a first elastic portion positioned on one axial side relative to the protruding portion and a second elastic portion positioned on the other axial side. This makes it possible to stabilize vibrations in the vehicle's vertical direction (gravity direction) that utilize the weight of the battery case. Claim 4In the battery mounting structure according to the present invention, the support member has a first support portion disposed on the vehicle outer side with respect to the second coupling member and a second support portion disposed on the vehicle inner side with respect to the second coupling member. Thereby, the load input to the lower part of the vehicle is quickly transmitted to the battery case side via the first support portion, so that the impact resistance performance during a collision can be improved.

Effect of the Invention

[0017] As described above, according to the battery mounting structure of the present invention, vibration of the vehicle body can be suppressed, and impact resistance performance during a collision can be improved.

Brief Description of the Drawings

[0018] [Figure 1] It is a schematic view of the vehicle body according to the embodiment as viewed from the vehicle width direction. [Figure 2] It is a schematic view of the coupling portion between the vehicle body and the battery case according to the embodiment as viewed from the lower side of the vehicle. [Figure 3] It is a cross-sectional view showing a state cut along the line III-III of FIG. 2. [Figure 4] It is an enlarged cross-sectional view showing the first coupling member and the second coupling member according to the embodiment. [Figure 5] It is a cross-sectional view showing the first coupling member and the second coupling member according to the first modification. [Figure 6] It is a cross-sectional view showing the second coupling member and the second coupling member according to the second modification.

Mode for Carrying Out the Invention

[0019] A vehicle 10 provided with a battery mounting structure according to an embodiment will be described with reference to the drawings. The arrow UP shown in each figure indicates the upper side in the vehicle vertical direction, the arrow FR indicates the front side in the vehicle longitudinal direction, and the arrow LH indicates the left side in the vehicle width direction. The vertical direction and the horizontal direction in the following description respectively mean the vertical in the vehicle vertical direction and the horizontal in the vehicle width direction.

[0020] (Body) Figure 1 is a schematic view of a body 12 that constitutes the framework of a vehicle 10 as seen from the vehicle width direction. As shown in this figure, the body 12 includes rockers 14 that constitute the framework at the lower part of the vehicle. The rocker 14 is formed in a hollow beam shape extending in the vehicle longitudinal direction, and is arranged in a pair at intervals in the vehicle width direction.

[0021] The rocker 14 is composed of a sheet metal rocker outer 16 arranged on the outer side in the vehicle width direction and a sheet metal rocker inner 18 arranged on the inner side in the vehicle width direction with respect to the rocker outer 16. As shown in Figure 3, the rocker outer 16 has a substantially hat-shaped cross-sectional shape that opens inward in the vehicle width direction, and flanges are formed at the upper and lower ends of the rocker outer 16. The rocker inner 18 has a substantially hat-shaped cross-sectional shape that opens outward in the vehicle width direction, and flanges are formed at the upper and lower ends of the rocker inner 18. The rocker 14 overlaps the rocker outer 16 and the rocker inner 18 in the vehicle width direction, and the flanges at the upper ends and the flanges at the lower ends are joined by welding or the like. Thereby, the rocker 14 has a configuration in which an upper wall portion 14A that constitutes the upper surface, a lower wall portion 14B that constitutes the lower surface, an outer wall portion 14C that connects the outer ends of the upper wall portion 14A and the lower wall portion 14B, and an inner wall portion 14D that connects the inner ends of the upper wall portion 14A and the lower wall portion 14B form a rectangular closed cross-section.

[0022] (Floor Panel) A sheet metal floor panel 20 is arranged inside the pair of left and right rockers 14. The floor panel 20 extends in the vehicle longitudinal direction and the vehicle width direction and constitutes the floor of the passenger compartment. The outer peripheral portion of the floor panel 20 is joined by welding or the like to the upper wall portion 14A of the left and right rockers 14 and a cross member (not shown) spanned between the rockers 14.

[0023] (Battery Case) Below the floor panel 20 is a battery case 24 containing multiple secondary batteries. The battery case 24 is formed in a flat rectangular box shape and extends in the vehicle's longitudinal and vehicle width directions. As shown in Figure 3, the battery case 24 consists of a box-shaped lower case 26 that opens towards the upper side of the vehicle and a box-shaped upper case 28 that opens towards the lower side of the vehicle. The battery case 24 is formed by joining the outer periphery of the lower case 26 and the outer periphery of the upper case 28 in the vehicle's vertical direction. The lower case 26 and upper case 28 can be made of sheet metal, laminate film, or the like.

[0024] (joint part) Returning to Figure 1, the outer periphery of the battery case 24 is connected to the body 12 via a plurality of connecting parts 30. In this embodiment, as an example, connecting parts 30 are provided on the front and rear ends of each rocker 14 in the vehicle's longitudinal direction, and the battery case 24 is connected at a total of four locations.

[0025] Figure 2 shows a view from below the vehicle of the joint 30 connecting the rocker 14 and the battery case 24, which are located on the left side of the vehicle 10. As shown in this figure, the rocker 14 and the battery case 24 are connected in the vehicle width direction via a long support member 32.

[0026] As shown in Figure 3, the support member 32 is formed in the shape of a hollow beam and extends in the vehicle width direction.

[0027] The inner end of the support member 32 in the vehicle width direction is connected to one end of a bracket 22 extending from the battery case 24 using a bolt 38 and a nut 39. The other end of the bracket 22 is connected to the bottom wall portion 24A that forms the lower surface of the battery case 24. In this state, the support member 32 is positioned opposite the side wall portion 24B of the battery case 24, and the support member 32 extends from the side of the battery case 24 towards the rocker 14.

[0028] The outer end of the support member 32 in the vehicle width direction is connected to the lower wall portion 14B of the rocker 14 via the first connecting member 40, the second connecting member 42, and the elastic member 60. In this state, the bottom wall portion 24A of the battery case 24 is set to a position lower than the height of the lower wall portion 14B of the rocker 14.

[0029] The first connecting member 40 is connected to the lower wall portion 14B of the rocker 14 using bolts 44 and nuts 45. The first connecting member 40 is a cylindrical metal member whose axial direction is in the vertical direction of the vehicle, and can be made up of, for example, a cylindrical collar.

[0030] As shown in Figure 4, a bolt 44 is inserted through the first connecting member 40 from the lower side of the vehicle. The tip of the bolt 44 is inserted through a bolt hole 48 formed in the lower wall portion 14B of the rocker 14 and is configured to be screwed into a nut 45 welded around the bolt hole 48.

[0031] The second coupling member 42 is connected to the battery case 24 via the support member 32. The second coupling member 42 is a cylindrical metal member with its axial direction in the vertical direction of the vehicle, and can be made of, for example, a cylindrical collar with a larger diameter than the first coupling member. In addition, the axial length of the second coupling member 42 is set to be shorter than that of the first coupling member 40.

[0032] The second connecting member 42 is attached to the first connecting member 40 by inserting the first connecting member 40 inside it, thereby creating a first gap G1 with respect to the first connecting member 40.

[0033] Furthermore, the second connecting member 42 has a projection 50 provided in the axial middle portion. The projection 50 is provided projecting from the inner circumferential surface of the second connecting member 42 into the first gap G1. The tip 50A of the projection 50 is positioned close to the first connecting member 40. The tip 50A of the projection 50 is spaced apart from the opposing surface (outer circumferential surface) of the first connecting member 40, and a second gap G2 is provided between the tip 50A of the projection 50 and the first connecting member 40.

[0034] The protrusions 50 may be formed in an annular shape or in an island shape. Furthermore, if the protrusions 50 are formed in an island shape, multiple protrusions may be arranged along the circumferential direction of the second connecting member 42.

[0035] The second connecting member 42 is inserted inside a through-hole 52 formed in the support member 32. The through-hole 52 is a through-hole that penetrates the support member 32 in the vertical direction of the vehicle. With the second connecting member 42 inserted into the through-hole 52, a portion of its outer surface is joined to the support member 32 by welding or the like. As a result, the second support member 32 is connected to the battery case 24 via the support member 32.

[0036] The support member 32 has a first support portion 34 positioned on the outside of the vehicle relative to the second connecting member 42, and a second support portion 36 positioned on the inside of the vehicle relative to the second connecting member 42. Here, the second support portion 36 positioned between the second connecting member 42 and the battery case 24 has higher rigidity than the first support portion 34.

[0037] Here, the details of the support member 32 will be explained. The support member 32 has a rectangular closed cross-section in the direction perpendicular to the extending direction (vehicle longitudinal direction). In addition, a plate-shaped first reinforcing portion 32C is provided inside the support member 32, connecting the upper surface portion 32A and the lower surface portion 32B in the vertical direction. Multiple first reinforcing portions 32C are provided inside the support member 32 along the extending direction, dividing the inside of the support member 32 into multiple spaces. For this reason, the cross-section of the support member 32 along the extending direction has a grid-like structure. Furthermore, the support member 32 is provided with multiple second reinforcing portions 32D that connect to adjacent first reinforcing portions 32C. The second reinforcing portions 32D are plate-shaped members that connect the upper and lower ends of adjacent first reinforcing portions 32C, and increase the rigidity of the closed cross-section formed by the upper surface portion 32A, the lower surface portion 32B, and the first reinforcing portion 32C. These second reinforcing portions 32D are formed only on the second support portion 36 of the support member 32. In this way, the rigidity of the second support portion 36 of the support member 32 is higher than that of the first support portion 34.

[0038] When a load is applied to the first support portion 34 of the support member 32 due to a side collision with the vehicle 10, the load is transmitted to the battery case 24 via the first support portion 34, the second connecting member 42, and the second support portion 36. At this time, the closed cross section formed by the upper portion 32A, the lower portion 32B, and the first reinforcing portion 32C of the first support portion 34 deforms and absorbs the impact. On the other hand, at the second support portion 36, the deformation of the closed cross section formed by the upper portion 32A, the lower portion 32B, and the first reinforcing portion 32C is suppressed by the second reinforcing portion 32D. As a result, the load is quickly transmitted from the second support portion 36 to the battery case 24, the load is distributed, and deformation of the rocker 14 toward the vehicle interior is suppressed.

[0039] As shown in Figure 4, an elastic member 60 is placed in the first gap G1 provided between the first connecting member 40 and the second connecting member 42.

[0040] The elastic member 60 is composed of a first elastic portion 62 positioned on one axial side (upward side of the vehicle) relative to the protrusion 50 of the second connecting member 42, and a second elastic portion 64 positioned on the other axial side (downward side of the vehicle) relative to the protrusion 50. The first elastic portion 62 and the second elastic portion 64 can be made of cylindrical bushings formed of an elastic material such as rubber, and are arranged symmetrically in the axial direction with respect to the protrusion 50.

[0041] The first elastic portion 62 is interposed between the first connecting member 40 and the second connecting member 42 in the first gap G1 formed above the protruding portion 50, and its axial end covers a portion of the upper surface of the second connecting member 42. The second elastic portion 64 is interposed between the first connecting member 40 and the second connecting member 42 in the first gap G1 formed below the protruding portion 50, and its axial end covers a portion of the upper surface of the second connecting member 42. The first elastic portion 62 and the second elastic portion 64 are configured to elastically deform in response to the axial displacement of the second connecting member 42.

[0042] (Mechanism of action and effect) With the configuration described above, in this embodiment, the battery case 24 mounted under the floor of the vehicle 10 is elastically supported by the body 12 via the coupling portion 30. Therefore, the heavy battery case 24 functions as a dynamic damper, suppressing vibrations of the body 12 when the vehicle 10 is running.

[0043] Specifically, an elastic member 60 is interposed between the first connecting member 40 connected to the body 12 and the second connecting member 42 connected to the battery case 24, and this elastic member 60 functions as a spring member having a predetermined spring constant.

[0044] The relationship between the vibration frequency f [Hz] of the dynamic damper with the battery case 24 as the mass body, the mass M [kg] of the battery case 24, and the spring constant K [N / m] of the elastic member 60 can be expressed by the following equation (1). (Formula 1) JPEG0007896570000001.jpg1751

[0045] Here, the vibration characteristics of the body 12 during resonance include a peak frequency [Hz] corresponding to the peak of the vibration level [dB]. Therefore, in a dynamic damper using the battery case 24 as the mass, the vibration absorption effect of the elastic member 60 can be enhanced by setting the spring constant K [N / m] of the elastic member 60 according to the mass M [kg] of the battery case 24 so that the frequency f [Hz] of the battery case 24 is equivalent to the peak frequency.

[0046] Furthermore, in this embodiment, a protrusion 50 is provided in the gap between the first connecting member 40 and the second connecting member 42, protruding from the second connecting member 42. Therefore, the load applied to the body 12 (rocker 14) can be quickly transmitted to the battery case 24 side via the protrusion 50, thereby distributing the load and improving impact resistance during collisions.

[0047] Furthermore, in this embodiment, the battery case 24 and the second connecting member 42 are connected via a support member 32 that extends from the side of the battery case 24 towards the body 12. This allows the connection portion 30 between the body 12 and the battery case 24 to be positioned to the side of the battery case 24, and compared to a configuration in which the battery case 24 is elastically supported from the lower side of the vehicle, the mounting space for the battery case 24 can be reduced in the vehicle height direction. As a result, the space efficiency of the lower part of the vehicle is improved, making it easier to expand the passenger compartment space provided on the floor panel 20 and to secure the height of the vehicle body bottom.

[0048] Furthermore, in this embodiment, the support member 32 has a first support portion 34 positioned on the outside of the vehicle relative to the second connecting member 42, and a second support portion 36 positioned on the inside of the vehicle relative to the second connecting member 42. As a result, the load applied to the underside of the vehicle is quickly transmitted to the battery case 24 side via the first support portion 34, thereby improving impact resistance during collisions.

[0049] Furthermore, in this embodiment, as shown in Figure 3, the battery case 24, support member 32, second connecting member 42, protrusion 50, and first connecting member 40 are arranged in the vehicle width direction at a predetermined height position in the vehicle's vertical direction. This improves the impact resistance performance in side collisions of the vehicle.

[0050] Furthermore, in this embodiment, since the tip of the protrusion 50 is spaced apart from the opposing surface, the tip of the protrusion 50 does not interfere with the opposing surface when the body 12 and battery case 24 vibrate. As a result, the generation of abnormal noise due to contact between the protrusion 50 and the opposing surface when the body 12 and battery case 24 vibrate can be suppressed.

[0051] Furthermore, no elastic member 60 is placed in the second gap G2 between the protruding portion 50 and the opposing surface. Therefore, when the load during a collision is transmitted from the first connecting member 40 to the second connecting member 42, the tip of the protruding portion 50 directly contacts the opposing surface. As a result, the load can be transmitted through a contact surface that is in metal-to-metal contact, making it less likely for slippage to occur at the contact surface and improving the efficiency of load transmission.

[0052] Furthermore, in this embodiment, the first connecting member 40 and the second connecting member 42 are formed in a cylindrical shape with the vehicle's vertical direction as their axial direction, and the elastic member 60 has a first elastic portion 62 positioned on one axial side relative to the protrusion 50 and a second elastic portion 64 positioned on the other axial side. This makes it possible to stabilize vibrations in the vehicle's vertical direction (gravity direction) that utilize the weight of the battery case 24.

[0053] [Regarding variations] Although the battery mounting structure according to the embodiment has been described above, the present invention is not limited to the configuration described in the above embodiment. Each configuration of the above embodiment can be modified as appropriate without departing from the spirit of the invention.

[0054] (First variation) For example, in the above embodiment, the protruding portion 50 is configured to protrude from the second connecting member 42 into the first gap G1, but the present invention is not limited thereto. As shown in Figure 5, the protruding portion 50 may be configured to protrude from the first connecting member 40 into the first gap G1. In this first modified example, the tip 50A of the protruding portion 50 is spaced apart from the opposing surface (inner circumferential surface) of the second connecting member 42.

[0055] (Second variation) In the above embodiment, the protrusion 50 is provided in the axial middle portion of the second connecting member 42, but the present invention is not limited thereto. As shown in Figure 6, the protrusion 50 may be provided at the axial end of the second connecting member 42. In this second modified example, a projection 50 is provided at the axial lower end of the second connecting member 42, and an elastic member 60 is positioned above the projection 50. Although not shown in the figures, a protrusion 50 may be provided at the upper axial end of the second connecting member 42, and the elastic member 60 may be positioned below the protrusion 50.

[0056] In the above embodiment, the battery case 24 is elastically supported at the joint 30 between the rocker 14 and the battery case 24, but the embodiment is not limited to this. The configuration of the joint 30 in the above embodiment can be applied to the joint between the skeletal member of the lower part of the vehicle and the battery case. For example, it may be applied to the joint between a cross member extending in the vehicle width direction and the battery case.

[0057] Furthermore, although the first connecting member 40 and the body 12 are connected by bolts and nuts in the above embodiment, they may also be connected by welding. Also, although the battery case 24 and the support member 32 are connected via a bracket in the above embodiment, the configuration is not limited to this. For example, the end of the support member 32 in the extending direction may be welded to the side wall portion 24B of the battery case 24. Alternatively, for example, the upper surface of the support member 32 may be connected by bolts and nuts to the flange where the joint between the lower case 26 and the upper case 28 of the battery case 24 is provided. [Explanation of Symbols]

[0058] 10 vehicles 12 Body 20 Floor panel (vehicle floor) 24 Battery Case 30 Joint 32 Support member 34 1st support part 36 Second support part 40 First connecting member 42 Second connecting member 50 Protrusion 60 Elastic members 62 First Elastic Section 64 Second Elastic Section G1 1st gap (gap)

Claims

1. The body, which forms the framework of the vehicle, The battery case, which is connected to the aforementioned body and mounted under the floor of the vehicle, In the joint between the body and the battery case, a first connecting member is connected to the body side, A second coupling member is coupled to the battery case side and mounted with a predetermined gap between it and the first coupling member, An elastic member is placed in the gap and interposed between the first connecting member and the second connecting member, It has a protruding portion that extends from one of the first connecting member and the second connecting member so as to protrude into the gap, The battery case further has a support member extending from the side toward the body side, The second connecting member is connected to the battery case via the support member. Battery mounting structure.

2. A body that constitutes the frame of a vehicle, The battery case, which is connected to the aforementioned body and mounted under the floor of the vehicle, In the joint between the body and the battery case, a first connecting member is connected to the body side, A second coupling member is coupled to the battery case side and mounted with a predetermined gap between it and the first coupling member, An elastic member is placed in the gap and interposed between the first connecting member and the second connecting member, It has a protruding portion that extends from one of the first connecting member and the second connecting member so as to protrude into the gap, The aforementioned protrusion is provided with its tip spaced apart from the opposing surface. Battery mounting structure.

3. A body that constitutes the frame of a vehicle, The battery case, which is connected to the aforementioned body and mounted under the floor of the vehicle, In the joint between the body and the battery case, a first connecting member is connected to the body side, A second coupling member is coupled to the battery case side and mounted with a predetermined gap between it and the first coupling member, An elastic member is placed in the gap and interposed between the first connecting member and the second connecting member, It has a protruding portion that extends from one of the first connecting member and the second connecting member so as to protrude into the gap, The first and second connecting members are formed in a cylindrical shape with the vehicle's vertical direction as their axial direction. The first connecting member is inserted inside the second connecting member. The elastic member is A first elastic portion is positioned on one axial side relative to the protruding portion, The system has a second elastic portion, which is positioned on the other axial side relative to the aforementioned protrusion. Battery mounting structure.

4. The aforementioned support member is A first support portion is positioned on the outside of the vehicle relative to the second connecting member, The second connecting member has a second support portion positioned on the inside of the vehicle, The battery mounting structure according to claim 1.

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