Battery pack support structure

Abstract

To provide a technology enabling the protection of a battery pack when impact is added to a side sill while reducing restriction on a shape of the side sill and the battery pack.SOLUTION: A pair of right and left side sills is provided in a vehicle, and extends in a vehicle fore-and-aft direction. An attaching member is a member for attaching a battery pack disposed between the side sills at an interval from the side sills, to the side sills. A side sill coupling mechanism couples the attaching member to the side sills. A battery pack coupling mechanism couples the attaching member to the battery pack. The side sill coupling mechanism is configured so that the attaching member can rotate with respect to the side sills when impact is added to the side sills from the outside of the vehicle. The battery pack coupling mechanism is configured so that the attaching member can rotate with respect to the battery pack when impact is added to the side sills from the outside of the vehicle.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a battery pack support structure that supports a battery pack in a vehicle. [Background technology]

[0002] In vehicles such as electric vehicles and hybrid vehicles, a battery pack is disposed under the floor of the vehicle. Specifically, the battery pack is disposed between the side sills of the vehicle and attached to the side sills.

[0003] Known technologies for supporting such battery packs include those designed to prevent damage to the battery pack when an impact is applied to the side sill due to a side collision of the vehicle, etc. For example, Patent Document 1 describes a configuration in which the contact portion between the side sill and the battery pack is inclined and opens toward the underside of the vehicle. With this configuration, when an impact is applied to the side sill, the battery pack moves downward and falls off the vehicle body, making it possible to protect the battery pack. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-165138 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the technology described in Patent Document 1, the contact portion between the side sill and the battery pack needs to be inclined, which places restrictions on the shapes of the side sill and the battery pack.

[0006] One aspect of the present disclosure provides a technology that enables protection of a battery pack when an impact is applied to the side sill while reducing restrictions on the shapes of the side sill and the battery pack. [Means for solving the problem]

[0007] One aspect of the present disclosure is a battery pack support structure for supporting a battery pack in a vehicle. The battery pack support structure includes a side sill, an attachment member, a side sill connecting mechanism, and a battery pack connecting mechanism. A pair of side sills are provided on the left and right sides of the vehicle and extend in the longitudinal direction of the vehicle. The attachment member is a member for attaching a battery pack, which is disposed between the side sills with a gap therebetween, to the side sills. The side sill connecting mechanism connects the attachment member to the side sill. The battery pack connecting mechanism connects the attachment member to the battery pack. The side sill connecting mechanism is configured so that the attachment member can rotate relative to the side sill when an impact is applied to the side sill from outside the vehicle. The battery pack connecting mechanism is configured so that the attachment member can rotate relative to the battery pack when an impact is applied to the side sill from outside the vehicle.

[0008] This configuration allows the battery pack to be displaced when an impact is applied to the side sill from outside the vehicle without requiring the side sill and battery pack to have special shapes, thereby reducing restrictions on the shapes of the side sill and battery pack and making it possible to protect the battery pack when an impact is applied to the side sill.

[0009] In one aspect of the present disclosure, the side sill connecting mechanism and the battery pack connecting mechanism may be disposed at positions offset from each other in the vehicle front-rear direction.

[0010] This configuration allows the battery pack greater freedom of movement compared to a configuration in which the side sill connecting mechanism and the battery pack connecting mechanism are arranged side by side in the vehicle width direction, thereby providing better protection for the battery pack in the event of an impact to the side sill.

[0011] In one aspect of the present disclosure, at least one of the side sill connecting mechanism and the battery pack connecting mechanism may be configured so that the connection position between the mounting member and the side sill or the battery pack can move to a different position when an impact is applied to the side sill from outside the vehicle.

[0012] This configuration allows the battery pack greater freedom of movement compared to a configuration in which the mounting member is limited to rotational movement around a predetermined axis, thereby providing better protection for the battery pack in the event of an impact to the side sill.

[0013] In one aspect of the present disclosure, at least one of the side sill connecting mechanism and the battery pack connecting mechanism may be configured to release the connection between the mounting member and the side sill or the battery pack when an impact is applied to the side sill from outside the vehicle.

[0014] This configuration can increase the amount of displacement of the battery pack when an impact is applied to the side sill from outside the vehicle, thereby providing even greater protection for the battery pack when an impact is applied to the side sill.

[0015] In one aspect of the present disclosure, the battery pack connection mechanism may connect the mounting member to the underside of the battery pack, and the mounting member may be configured to limit downward displacement of the battery pack.

[0016] With this configuration, even if the connection between the mounting member and the battery pack is released, the mounting member limits the downward displacement of the battery pack, thereby preventing damage to the battery pack due to a collision with the road surface.

[0017] One aspect of the present disclosure may further include a limiting portion disposed above the battery pack and configured to limit upward displacement of the battery pack.

[0018] With this configuration, when the battery pack is placed under the floor of the vehicle, it is possible to prevent the battery pack from being displaced significantly upward and affecting the interior of the vehicle, thereby protecting the occupants. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 2 is a schematic bottom view showing the battery pack support structure. [Figure 2] FIG. 2 is a schematic cross-sectional view showing a battery pack support structure. [Figure 3] FIG. [Figure 4] 3 is a schematic cross-sectional view showing an enlarged view of an area including the mounting member in FIG. 2. FIG. [Figure 5] 10 is a schematic bottom view showing the battery pack support structure when an impact is applied to the side sill from outside the vehicle. FIG. [Figure 6] 10 is a schematic cross-sectional view showing the battery pack support structure when an impact is applied to the side sill from outside the vehicle. FIG. [Figure 7] Fig. 7A is a front view showing a second modified mounting member, Fig. 7B is a front view showing a third modified mounting member, Fig. 7C is a front view showing a fourth modified mounting member, Fig. 7D is a front view showing a fifth modified mounting member, and Fig. 7E is a front view showing a sixth modified mounting member. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. [1. Configuration] The battery pack support structure 1 shown in Figures 1 and 2 is a structure that supports a battery pack P in a vehicle such as an electric vehicle or a hybrid vehicle. Hereinafter, the battery pack support structure 1 will be simply referred to as the support structure 1. The support structure 1 supports the battery pack P under the floor of the vehicle. The support structure 1 includes a pair of side sills 2A, 2B, a plurality of mounting members 3, a plurality of fastening members 4, and at least one displacement limiting member 5. In the following description, when there is no need to distinguish between the pair of side sills 2A, 2B, they will be referred to as side sills 2.

[0021] The side sills 2 are components that form the framework under the floor of the vehicle. The side sills 2 have a shape that extends linearly. A pair of side sills 2 are provided on the left and right of the vehicle with their extension direction facing the longitudinal direction of the vehicle. Between the side sills 2 (i.e., between the side sill 2A and the side sill 2B), a battery pack P is arranged with a gap between them. The battery pack P is a box-shaped casing that houses battery cells and the like. The battery pack P in this embodiment has an outer shape that is roughly rectangular parallelepiped.

[0022] The mounting member 3 is a member for mounting the battery pack P to the side sill 2. In this embodiment, the mounting member 3 is a plate-like member that extends linearly. The mounting member 3 is disposed below the side sill 2 and the battery pack P. The vertical direction with respect to the side sill 2 and the battery pack P here refers to the vertical direction when these are mounted on the vehicle. The same applies below. Although the number of mounting members 3 is not limited, the support structure 1 of this embodiment includes two mounting members 3 for mounting the battery pack P to the side sill 2A and two mounting members 3 for mounting the battery pack P to the side sill 2B. In other words, the support structure 1 of this embodiment includes a total of four mounting members 3. These four mounting members 3 are disposed symmetrically on the left and right sides of the battery pack P at the front and rear of the vehicle.

[0023] As shown in Fig. 3, a first insertion portion 31 and a second insertion portion 32 for inserting a fastening member 4 are formed at both ends of the mounting member 3 in the extension direction. The fastening member 4 is a member that fastens the mounting member 3 to the side sill 2 and the battery pack P. The fastening member 4 in this embodiment is a bolt.

[0024] The first insertion portion 31 is a circular through-hole that can receive the shank of a bolt serving as the fastening member 4 and is large enough to prevent the head of the bolt from slipping out.

[0025] The second insertion portion 32 is a notch extending from the edge of the mounting member 3 in the extension direction. Specifically, the second insertion portion 32 has a circular through hole 32a through which the fastening member 4 is inserted and strip-shaped portions 32b and 32c extending from the through hole 32a to both sides in the extension direction of the mounting member 3. The diameter of the through hole 32a is the same as the diameter of the first insertion portion 31. The center lines of the strip-shaped portions 32b and 32c pass through the center of the through hole 32a. The width of the strip-shaped portions 32b and 32c is slightly narrower than the diameter of the through hole 32a so that the shank of a bolt serving as the fastening member 4 cannot be inserted therethrough. In other words, the second insertion portion 32 is configured so that the fastening member 4 is positioned in the through hole 32a under normal conditions, but can move from the through hole 32a to the strip-shaped portion 32b on the edge side or the strip-shaped portion 32c on the rear side when a strong external force is applied.

[0026] 1 and 2, the mounting member 3 is arranged so that, when viewed in the vertical direction, the first insertion portion 31 overlaps the side sill 2 and the second insertion portion 32 overlaps the battery pack P. In other words, the mounting member 3 is arranged so as to bridge the side sill 2 and the battery pack P when viewed in the vertical direction.

[0027] The fastening member 4 inserted into the first insertion portion 31 is screwed into a screw hole (not shown) formed in the side sill 2, thereby fastening the mounting member 3 to the side sill 2. In other words, the first insertion portion 31 and the fastening member 4 constitute a side sill connecting mechanism 61 that connects the mounting member 3 to the side sill 2. Specifically, the side sill connecting mechanism 61 connects the mounting member 3 to the underside of the side sill 2. The underside of the side sill 2 is the outer surface of the side sill 2 that faces the road surface located below the vehicle when the side sill 2 is mounted on the vehicle.

[0028] Furthermore, the fastening member 4 inserted into the through hole 32a of the second insertion portion 32 is screwed into a screw hole (not shown) formed in the battery pack P, thereby fastening the mounting member 3 to the battery pack P. That is, the second insertion portion 32 and the fastening member 4 constitute a battery pack connecting mechanism 62 that connects the mounting member 3 to the battery pack P. Specifically, the battery pack connecting mechanism 62 connects the mounting member 3 to the underside of the battery pack P. The underside of the battery pack P is the outer surface of the battery pack P that faces the road surface located below the vehicle when the battery pack P is mounted on the vehicle. In this embodiment, since the outer shape of the battery pack P is approximately rectangular as described above, the underside of the battery pack P is approximately parallel to the road surface located below the vehicle when the battery pack P is mounted on the vehicle.

[0029] The support structure 1 of this embodiment is configured so that the central axes of all of the fastening members 4 are oriented in the same direction. Specifically, the central axes of the fastening members 4 are oriented in the vertical direction.

[0030] 1, in each mounting member 3, if a connecting line L is a line that passes through the central axis of the fastening member 4 inserted into the first insertion portion 31 and the central axis of the fastening member 4 inserted into the through hole 32a when viewed vertically, each mounting member 3 is arranged so that the connecting line L is oblique to the vehicle width direction. More specifically, each mounting member 3 is arranged so that the connecting line L passes through the center of the battery pack P when viewed vertically. In other words, the first insertion portion 31 and the second insertion portion 32 included in one mounting member 3 are positioned offset from each other in the vehicle front-rear direction.

[0031] The displacement limiting member 5 is a plate-shaped member. As shown in Fig. 4, the displacement limiting member 5 has a limiting portion 51 and a support portion 52. The limiting portion 51 is a portion that is disposed above the battery pack P in order to limit the upward displacement of the battery pack P. The limiting portion 51 is disposed between the battery pack P and a member (so-called body floor) that constitutes the floor of the vehicle and is located above the battery pack P, with a gap between the battery pack P and the member.

[0032] The support portion 52 is a portion that supports the restricting portion 51. The support portion 52 is fixed to the side sill 2 by inserting a bolt 7 into a through hole (not shown) formed in the support portion 52 and screwing the bolt 7 into a screw hole (not shown) formed in the side sill 2.

[0033] In this embodiment, the limiting portion 51 has an inclined portion on the support portion 52 side. That is, the limiting portion 51 of this embodiment is provided with an inclined portion 511. When the limiting portion 51 is disposed above the battery pack P, the inclined portion 511 is inclined toward the battery pack P.

[0034] 1 and 2, a pair of displacement limiting members 5 are provided on the left and right of the vehicle corresponding to the left and right side sills 2. While the number of displacement limiting members 5 fixed to each side sill 2 is not limited, in this embodiment, one displacement limiting member 5 is fixed to the side sill 2A and one displacement limiting member 5 is fixed to the side sill 2B. In other words, the support structure 1 of this embodiment includes a total of two displacement limiting members 5.

[0035] [2. Effect] The function of the support structure 1 in the event of a side collision of the vehicle will be described with reference to FIGS.

[0036] FIG. 5 shows an example in which the side of a vehicle collides with an object M such as a pole. When the side of the vehicle collides with the object M, an impact is applied from outside the vehicle to the side sill 2B on the side that collided with the object M. This impact causes the side sill 2B to bend toward the vehicle body, pushing the battery pack P. The battery pack P is pushed by the side sill 2B and displaced toward the other side sill 2A. As the battery pack P displaces, the fastening members 4 coupled to the battery pack P (i.e., the fastening members 4 positioned by the through-holes 32a) also move toward the side sill 2A.

[0037] On the side sill 2B side, the fastening members 4 connected to the battery pack P move toward the side sill 2A, pulling the mounting member 3 toward the side sill 2A. When pulled toward the side sill 2A by an external force that exceeds the fastening force of the fastening members 4, the mounting member 3 rotates around the central axis of the fastening members 4 as the axis of rotation so that the direction of the connecting line L approaches the vehicle width direction. In other words, the side sill connecting mechanism 61 and the battery pack connecting mechanism 62 are configured so that the mounting member 3 can rotate relative to the side sill 2 or the battery pack P when an impact is applied to the side sill 2 from outside the vehicle and an external force that exceeds the fastening force of the fastening members 4 is applied.

[0038] As the mounting member 3 is pulled further toward the side sill 2A and rotates further, the orientation of the strip-shaped portion 32b on the edge side approaches the direction in which the mounting member 3 is being pulled, and the fastening member 4 that was positioned in the through-hole 32a moves from the through-hole 32a to the strip-shaped portion 32b. Then, as the battery pack P is displaced, the fastening member 4 moves within the strip-shaped portion 32b and reaches the edge, and the fastening member 4 detaches from the mounting member 3.

[0039] That is, the battery pack connecting mechanism 62 is configured so that the connection position between the mounting member 3 and the battery pack P can be moved to a different position when an impact is applied to the side sill 2 from outside the vehicle and an external force greater than the fastening force of the fastening member 4 acts on the side sill 2. The battery pack connecting mechanism 62 is also configured so that when the connection position between the mounting member 3 and the battery pack P reaches the edge of the mounting member 3, the connection between the mounting member 3 and the battery pack P is released.

[0040] Meanwhile, on the side of the side sill 2A, the fastening member 4 coupled to the battery pack P moves toward the side sill 2A, pushing the mounting member 3 toward the side sill 2A. When pushed toward the side sill 2A by an external force greater than the fastening force of the fastening member 4, the mounting member 3 rotates around the central axis of the fastening member 4 as the rotation axis so that the direction of the connecting line L approaches the longitudinal direction of the vehicle. When the mounting member 3 is pushed further toward the side sill 2A, the fastening member 4, which was positioned by the through-hole 32a, is pushed from the through-hole 32a into the band-shaped portion 32c on the far side. In other words, the connection position between the mounting member 3 and the battery pack P moves from the through-hole 32a to the band-shaped portion 32c.

[0041] As shown in FIG. 6 , when the connection between the mounting member 3 on the side sill 2B and the battery pack P is released and the battery pack P is attached only to the side sill 2A, the battery pack P becomes able to move up and down around the mounting position on the side sill 2A as a fulcrum. However, upward displacement of the battery pack P is limited by the limiting portion 51 of the displacement limiting member 5 shown in FIG. 4 . Particularly in this embodiment, the limiting portion 51 is provided with an inclined portion 511. Therefore, if the battery pack P moves upward, the inclined portion 511 guides the battery pack P toward the side sill 2A. That is, in the event of an impact being applied to the side sill 2B from the outside of the vehicle, the limiting portion 51 of this embodiment is configured to limit the upward displacement of the battery pack P while guiding the battery pack P toward the other side sill 2A (i.e., in the direction in which the connection between the mounting member 3 on the side sill 2B and the battery pack P is released). Furthermore, as shown in FIG. 6 , downward displacement of the battery pack P is limited by the mounting member 3 on the side sill 2B. That is, the mounting member 3 is configured to limit downward displacement of the battery pack P even when the connection with the battery pack P is released.

[0042] [3.Effects] According to the first embodiment described above in detail, the following effects can be obtained. (3a) In the support structure 1, the side sill connecting mechanism 61 is configured so that the mounting member 3 can rotate relative to the side sill 2 when an impact is applied to the side sill 2 from outside the vehicle. Also, the battery pack connecting mechanism 62 is configured so that the mounting member 3 can rotate relative to the battery pack P when an impact is applied to the side sill 2 from outside the vehicle.

[0043] With this configuration, when an impact is applied to the side sill 2 from outside the vehicle, the battery pack P can be displaced away from the impacted side sill 2 without requiring the side sill 2 and the battery pack P to have special shapes. Therefore, it is possible to protect the battery pack P when an impact is applied to the side sill 2 while reducing restrictions on the shapes of the side sill 2 and the battery pack P.

[0044] (3b) In the support structure 1, the side sill connecting mechanism 61 and the battery pack connecting mechanism 62 are arranged at positions offset from each other in the front-to-rear direction of the vehicle.

[0045] This configuration allows a higher degree of freedom for displacement of the battery pack P compared to a configuration in which the side sill connecting mechanism 61 and the battery pack connecting mechanism 62 are arranged side by side in the vehicle width direction. Therefore, it is possible to further protect the battery pack P when an impact is applied to the side sill 2.

[0046] (3c) In the support structure 1, the battery pack connecting mechanism 62 is configured so that the connecting position between the mounting member 3 and the battery pack P can move to a different position when an impact is applied to the side sill 2 from outside the vehicle.

[0047] This configuration allows a higher degree of freedom of displacement for the battery pack P compared to a configuration in which the mounting member 3 can only rotate about a predetermined rotation axis, thereby enabling better protection for the battery pack P when an impact is applied to the side sill 2.

[0048] (3d) In the support structure 1, the battery pack connecting mechanism 62 is configured to release the connection between the mounting member 3 and the battery pack P when an impact is applied to the side sill 2 from outside the vehicle.

[0049] With this configuration, when an impact is applied to the side sill 2 from outside the vehicle, the battery pack P comes off the side sill 2, thereby increasing the amount of displacement of the battery pack P. Therefore, it is possible to further protect the battery pack P when an impact is applied to the side sill 2.

[0050] (3e) In the support structure 1, the mounting member 3 is connected to the lower surface of the battery pack P and is configured to limit the downward displacement of the battery pack P.

[0051] With this configuration, even if the connection between the mounting member 3 and the battery pack P is released, the mounting member 3 limits the downward displacement of the battery pack P, thereby preventing damage to the battery pack P due to a collision with the road surface.

[0052] (3f) The support structure 1 is disposed above the battery pack P and includes a limiting portion 51 configured to limit the upward displacement of the battery pack P.

[0053] Since the support structure 1 is disposed under the floor of the vehicle, the passenger compartment is located above the battery pack P. With the above-described configuration, when the connection between the mounting member 3 and the battery pack P is released, it is possible to prevent the battery pack P from being displaced significantly upward and affecting the passenger compartment. In other words, it is possible to protect the occupants.

[0054] 4. Other Embodiments Although the embodiments of the present disclosure have been described above, it goes without saying that the present disclosure is not limited to the above-described embodiments and can take on various forms.

[0055] (4a) In the above embodiment, the first insertion portion 31 in the mounting member 3 is a circular through-hole. The second insertion portion 32 in the mounting member 3 is a notch having the through-hole 32a and the strip-shaped portions 32b and 32c. However, the shape of the insertion portion is not particularly limited.

[0056] As a first modified example, the insertion portion may be a notch of a constant width that allows the shank of a bolt serving as the fastening member 4 to be inserted therethrough. Alternatively, as in a second modified example shown in Fig. 7A, the insertion portion 33 may be a notch that allows the shank of a bolt serving as the fastening member 4 to be inserted therethrough toward the back and that widens in width toward the edge. With this configuration, the fastening member 4 can move toward the edge even with a relatively small external force, making it easier for the fastening member 4 to detach from the mounting member 3.

[0057] 7B , the insertion portion 34 may be a notch having the aforementioned through hole 32a and an open portion 34a that extends from the through hole 32a toward the edge and expands in width toward the edge. The width of the open portion 34a on the through hole 32a side is slightly narrower than the diameter of the through hole 32a, preventing the insertion of the shank of a bolt serving as the fastening member 4. With this configuration, the fastening member 4 does not move from the through hole 32a to the open portion 34a unless a strong external force is applied, as with the second insertion portion 32 of the above embodiment. However, once the fastening member 4 moves from the through hole 32a to the open portion 34a, even a relatively small external force can move the fastening member 4 through the open portion 34a toward the edge. This makes it easier for the fastening member 4 to detach from the mounting member 3.

[0058] 7C , the insertion portion 35 may be a through hole having the aforementioned through hole 32a and band-shaped portions 35a, 35b extending from the through hole 32a toward the rear in a V-shape. The width of the band-shaped portions 35a, 35b is slightly narrower than the diameter of the through hole 32a, preventing the insertion of the shank of a bolt serving as the fastening member 4. With this configuration, when a strong external force is applied to the rear of the fastening member 4 positioned in the through hole 32a, the fastening member 4 is pushed from the through hole 32a into the band-shaped portion 35a or the band-shaped portion 35b, depending on the direction of the applied external force. Even when the directions of the external forces acting on the fastening member 4 are different, as in the case of the two mounting members 3 fixed to the side sill 2A in FIG. 5 , the mounting members 3 can have a common configuration because the mounting members 3 are provided with band-shaped portions 35a, 35b corresponding to the respective directions.

[0059] In the insertion portion 35 of the fourth modified example, the width of the strip-shaped portions 35a, 35b is configured to be slightly narrower than the diameter of the through-hole 32a, but the width of the strip-shaped portions 36a, 36b may be the same as the diameter of the through-hole 32a, as in the insertion portion 36 of the fifth modified example shown in Fig. 7D. With this configuration, the fastening member 4 can be easily moved toward the rear even with a relatively small external force.

[0060] For example, the insertion portion may have a configuration that combines the configuration shown in FIG. 7A or 7B with the configuration shown in FIG. 7C or 7D. The insertion portion 37 of a sixth modified example shown in FIG. 7E is a notch that combines the insertion portion 34 of the third modified example shown in FIG. 7B and the insertion portion 35 of the fourth modified example shown in FIG. 7C. Specifically, the insertion portion 37 of the sixth modified example has an opening 34a provided on the edge side of the through hole 32a and strip-shaped portions 35a, 35b provided on the rear side of the through hole 32a. This configuration facilitates the fastening member 4 to detach from the mounting member 3 and also facilitates the fastening member 4 to move rearward, depending on the direction of an external force applied to the fastening member 4. Therefore, the mounting members 3 fixed to the left and right side sills 2A, 2B can have a common configuration.

[0061] (4b) In the above embodiment, when an impact is applied to the side sill 2 from outside the vehicle, the fastening member 4 coupled to the battery pack P can move from the through-hole 32a along the strip-shaped portion 32b and detach from the mounting member 3. That is, the battery pack connecting mechanism 62 is configured so that the connection between the mounting member 3 and the battery pack P is released when an impact is applied to the side sill 2 from outside the vehicle. However, the fastening member 4 coupled to the side sill 2 may also be configured so that it can detach from the mounting member 3 when an impact is applied to the side sill 2 from outside the vehicle. That is, the side sill connecting mechanism 61 may be configured so that the connection between the mounting member 3 and the side sill 2 is released when an impact is applied to the side sill 2 from outside the vehicle. Specifically, for example, the side sill connecting mechanism 61 may be formed of the second insertion portion 32 and the fastening member 4.

[0062] (4c) In the above embodiment, when an impact is applied to the side sill 2 from outside the vehicle, the fastening member 4 coupled to the battery pack P can be pushed into the strip-shaped portion 32c through the through-hole 32a. That is, the battery pack connecting mechanism 62 is configured so that the connection position between the mounting member 3 and the battery pack P can be moved to a different position when an impact is applied to the side sill 2 from outside the vehicle. However, the battery pack connecting mechanism 62 may be configured so that the fastening member 4 coupled to the side sill 2 can be pushed inward when an impact is applied to the side sill 2 from outside the vehicle. That is, the side sill connecting mechanism 61 may be configured so that the connection position between the mounting member 3 and the battery pack P can be moved to a different position when an impact is applied to the side sill 2 from outside the vehicle. Specifically, for example, the side sill connecting mechanism 61 may be configured with the second insertion portion 32 and the fastening member 4.

[0063] (4d) In the above embodiment, the mounting members 3 are arranged so that the connecting line L passes through the center of the battery pack P when viewed vertically. However, the arrangement of the mounting members 3 is not particularly limited. For example, the mounting members 3 may be arranged so that the connecting lines L are parallel to each other. Furthermore, the mounting members 3 do not necessarily have to be arranged so that the connecting line L is oblique to the vehicle width direction when viewed vertically. In other words, the side sill connecting mechanism 61 and the battery pack connecting mechanism 62 do not necessarily have to be arranged at positions offset from each other in the vehicle fore-and-aft direction, and may be arranged side by side in the vehicle width direction, for example.

[0064] (4e) In the above embodiment, the mounting member 3 is connected to the lower surfaces of the side sill 2 and the battery pack P, but the mounting positions of the mounting member 3 to the side sill 2 and the battery pack P are not particularly limited. For example, the mounting member 3 may be connected to the upper surfaces of the side sill 2 and the battery pack P. In other words, the mounting member 3 does not necessarily have to be configured to restrict downward displacement of the battery pack P.

[0065] (4f) In the above embodiment, the support structure 1 includes the limiting portion 51, but the support structure 1 does not necessarily have to include the limiting portion 51.

[0066] (4g) The function of one component in the above embodiments may be distributed among multiple components, or the functions of multiple components may be integrated into one component. Also, part of the configuration of the above embodiments may be omitted. Furthermore, at least part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments. [Explanation of symbols]

[0067] 1...battery pack support structure, 2A, 2B...side sill, 3...mounting member, 31...first insertion portion, 32...second insertion portion, 32a...through hole, 32b, 32c...strip-shaped portion, 4...fastening member, 5...displacement limiting member, 51...limiting portion, 511...inclined portion, 52...support portion, 61...side sill connecting mechanism, 62...battery pack connecting mechanism.

Claims

1. A battery pack support structure for supporting a battery pack in a vehicle, a pair of left and right side sills provided on the vehicle and extending in the front-rear direction of the vehicle; a mounting member for mounting the battery pack, which is disposed between the side sills with a gap therebetween, to the side sills; a side sill connecting mechanism that connects the mounting member to the side sill; a battery pack connecting mechanism that connects the mounting member to a lower surface of the battery pack; a limiting portion disposed above the battery pack and configured to limit upward displacement of the battery pack; a support portion that is a portion continuous with the limiting portion and is fixed to the side sill to support the limiting portion; Equipped with the side sill connecting mechanism is configured so that the mounting member can rotate relative to the side sill when an impact is applied to the side sill from outside the vehicle, the battery pack connecting mechanism is configured so that the mounting member can rotate relative to the battery pack when an impact is applied to the side sill from outside the vehicle; at least one of the side sill connecting mechanism and the battery pack connecting mechanism is configured to release the connection between the mounting member and the side sill or the battery pack when an impact is applied to the side sill from outside the vehicle; The battery pack support structure, wherein the mounting member is configured to limit downward displacement of the battery pack.

2. The battery pack support structure according to claim 1, The battery pack support structure, wherein the side sill connecting mechanism and the battery pack connecting mechanism are arranged at positions offset from each other in the vehicle front-rear direction.

3. 3. The battery pack support structure according to claim 1, a battery pack support structure in which at least one of the side sill connecting mechanism and the battery pack connecting mechanism is configured so that the connection position between the mounting member and the side sill or the battery pack can move to a different position when an impact is applied to the side sill from outside the vehicle.

4. A battery pack support structure according to any one of claims 1 to 3, The limiting portion is disposed above the battery pack with a gap therebetween.

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