JP5472361B2 - Vehicle battery mounting structure - Google Patents

Description

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

  Conventionally, a vehicle battery mounting structure in which a plurality of batteries are mounted using a battery frame is known (Patent Document 1).

  In Patent Document 1, nine small chambers are formed by members extending vertically and horizontally in a grid shape, and a small battery is accommodated and mounted in each of the small chambers.

Japanese Patent Laid-Open No. 9-272400

  However, in the above conventional structure, in addition to the problem that the battery frame becomes heavier due to the large number of members extending vertically and horizontally, the load transmission path at the time of the vehicle collision has not been studied. There has been a problem that the load input to cannot be efficiently dispersed.

  Therefore, an object of the present invention is to increase energy absorption by efficiently dispersing a load input to a vehicle body skeleton member at the time of a vehicle collision while being lighter.

In the present invention, the battery frame includes an outer frame member having a rectangular shape with a portion extending along the pair of vehicle width directions and a portion extending along the pair of vehicle longitudinal directions, A pair of side members extending along the front-rear direction on both sides in the vehicle width direction of the vehicle, a pair of front side members extending along the front-rear direction on both sides in the vehicle width direction of the vehicle front, and the front side An extension side member provided between the member and the side member, and the outer frame member includes a front end member extending along the vehicle width direction at the front end portion in the vehicle front-rear direction, and the vehicle front-rear direction at both ends in the vehicle width direction. includes a pair of side edge members which are respectively attached to the side members extending along a direction, in the frame of the outer frame member, and a middle vertical member extending rearward from said front end member, said Aix Emissions Deployment side members, said intermediate longitudinal member and the inner member that extends near the front end, the end member from a rear portion of the front side member from the inner member in the vehicle width direction outer side of the front member from a rear portion of the front side member And an outer member that extends toward the front end position.

  According to the present invention, the battery frame can be configured to be lighter than the conventional structure, and the energy input can be increased by efficiently dispersing the load input to the vehicle body skeleton member at the time of a vehicle collision.

It is a side view of the battery mounting structure of the vehicle concerning one Embodiment of this invention. It is the top view which looked at the battery mounting structure of the vehicle concerning one Embodiment of this invention from upper direction. 1 is an exploded perspective view of a battery frame and a battery included in a vehicle battery mounting structure according to an embodiment of the present invention. It is IV-IV sectional drawing of FIG. It is a top view which shows the load transmission path | route at the time of the rear collision in the battery mounting structure of the vehicle concerning one Embodiment of this invention. It is a top view which shows the load transmission path | route at the time of the side collision in the battery mounting structure of the vehicle concerning one Embodiment of this invention. It is the top view which looked at the battery mounting structure of the vehicle concerning another embodiment of this invention from upper direction. It is a figure which shows the modification of the panel contained in the battery mounting structure of the vehicle concerning embodiment of this invention. It is a figure which shows another modification of the panel contained in the battery mounting structure of the vehicle concerning embodiment of this invention. It is a perspective view which shows the modification of the battery frame contained in the battery mounting structure of the vehicle concerning embodiment of this invention. It is a perspective view which shows another modification of the battery frame contained in the battery mounting structure of the vehicle concerning embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a side view of a vehicle battery mounting structure according to an embodiment of the present invention, FIG. 2 is a plan view of the vehicle battery mounting structure as viewed from above, and FIG. 3 is an exploded perspective view of the battery frame and the battery. 4 is a cross-sectional view taken along the line IV-IV in FIG. In each figure, FR represents the vehicle front-rear direction front, UP represents the vehicle upper direction, and WD represents the vehicle width direction.

  As shown in FIG. 1, in the vehicle 1 according to the present embodiment, a plurality of (three in the present embodiment) batteries 3 are mounted under the floor of the passenger compartment 2. The vehicle 1 only needs to be equipped with a plurality of batteries 3, such as an electric vehicle having a wheel driving motor, a hybrid vehicle having a wheel driving motor and an engine, and an electric vehicle having a fuel cell. Can be configured.

  As shown in FIGS. 1 and 2, a pair of vehicle body skeleton members that extend along the vehicle front-rear direction on both sides in the vehicle width direction are provided at the lower part of the vehicle compartment 2 at the center in the front-rear direction of the vehicle 1. Side members 4, 4, and cross members 5 </ b> R, 5 </ b> R installed along the vehicle width direction between the front end portions of the pair of side members 4, 4 and the floor tunnel portion 30. Outriggers 7 are arranged between the side member 4 and the side sill 6 (only the side sill inner is shown in FIGS. 2 and 4) at a plurality of locations (three locations in the present embodiment) along the vehicle longitudinal direction. Yes. In this embodiment, the side member 4, the cross member 5R, and the side sill 6 are all configured as hollow members having a closed cross section.

  Rear side members 8 and 8 extending along the vehicle front-rear direction on both sides in the vehicle width direction of the rear portion of the vehicle 1 are connected to the rear end portions of the side members 4 and 4, respectively. In the present embodiment, the rear side member 8 is configured as a member having a substantially rectangular closed cross section.

  Between the pair of rear side members 8, 8, two rear cross members 9F, 9R are installed along the vehicle width direction. In the present embodiment, the front rear cross member 9F is configured as a member having a substantially rectangular closed cross section, while the rear rear cross member 9R is formed of two pipe-shaped members 9Ra and 9Rb having a substantially circular cross section. Are joined together.

  The rear side members 8 and 8 are connected to inner portions in the vehicle width direction of the wheel houses 10 and 10 covering the rear wheels 32, respectively. A cross bar 11 is installed between the upper portions of the pair of left and right wheel houses 10 and 10 (only the wheel house inner is shown in FIGS. 2 and 4). In the present embodiment, the cross bar 11 is configured by a pipe-shaped member having a substantially circular cross section.

  A panel 12 is installed between the rear rear cross member 9R and the cross bar 11. As shown in FIG. 2, in this embodiment, one pipe-like member 9Ra constituting the cross bar 11 and the rear rear cross member 9R is an intermediate portion 11m extending along the vehicle width direction at the center in the vehicle width direction. , 9m, and slant portions 11c, 9c extending toward the rear in the vehicle front-rear direction toward the vehicle width direction on both sides of the section, and a panel 12 between the slant portions 11c, 9c facing vertically. , 12 are installed. The other pipe member 9Rb constituting the rear rear cross member 9R is formed in a straight line along the vehicle width direction. At the intermediate portion in the vehicle width direction, the pipe member 9Rb and the crossbar 11 A panel 12 is installed between the panels.

  A front compartment 13 is formed at the front of the vehicle 1. In the front compartment 13, a drive motor 40, a charger 41, an inverter 42, etc. are arranged as electrical equipment.

  A pair of front side members 14, 14 extending along the vehicle front-rear direction are provided on both sides of the front compartment 13 in the vehicle width direction. As shown in FIG. 1, the front side member 14 is bent downward and rearward in the vicinity of the rear end portion of the front compartment 13, as shown in FIG. 1. Then, a hat-shaped cross-section member is formed on the floor panel 26 in a face-down manner on the floor member 26 between the skewed portion 14i as a portion behind the bending point of the front side member 14 and the side member 4. An extension side member 15 having a closed cross section is provided.

  The extension side member 15 has a substantially V shape in plan view and is bifurcated into a bifurcated shape on each of the left and right sides, and extends from the rear end of the front side member 14 toward the center position in the vehicle width direction of the front cross member 5. And an outer member 15o extending from the rear end portion of the front side member 14 toward the front end position of the side member 4 outside the inner member 15i in the vehicle width direction. Note that suspension members 16, 16 for the left and right front wheels 34 are attached to the cross member 5 </ b> R provided at the rear end portion of the extension side member 15.

  The battery frame 17 includes a rectangular frame-shaped outer frame member 18 and a T-shaped member 19 attached in the outer frame member 18.

  Among these, the outer frame member 18 includes a front end member 18f extending along the vehicle width direction at the front end in the vehicle front-rear direction, a rear end member 18r extending along the vehicle width direction at the rear end in the vehicle front-rear direction, and both ends in the vehicle width direction. It includes a pair of side end members 18s, 18s extending along the vehicle front-rear direction.

  Further, the T-shaped member 19 includes an intermediate horizontal member 19w extending in the vehicle width direction between the front end member 18f and the rear end member 18r, a vehicle width direction center position of the intermediate horizontal member 19w, and a vehicle width of the front end member 18f. And an intermediate longitudinal member 19l extending in the vehicle longitudinal direction between the center position in the direction.

  In the battery frame 17, the rectangular region 20 formed by the outer frame member 18 is divided into three divided rectangular regions 21 by the T-shaped member 19. In the present embodiment, the three divided rectangular regions 21 are all substantially the same shape, and are formed in a rectangular shape whose long side is twice the short side in plan view. Then, the two divided rectangular areas 21 are arranged side by side along the vehicle width direction in a posture that becomes longer in the longitudinal direction of the vehicle, and one divided rectangular area in a posture that becomes longer in the vehicle width direction behind the two divided rectangular regions 21. 21 is arranged.

  In addition, an opening 22 that opens to the lower side of the vehicle is formed for each of the three divided rectangular regions 21. The opening 22 is formed in a substantially square shape, but may have other shapes such as a rectangular shape or a circular shape.

  As shown in FIGS. 3 and 4, in this embodiment, the skeleton members (front end member 18f, rear end member 18r, side end member 18s, intermediate lateral member 19w) constituting the outer frame member 18 and the T-shaped member 19 are used. The intermediate vertical member 19l) has a closed cross-sectional structure, and extends vertically from the vertical wall portion 23 extending in the vertical direction to the frame inner side (that is, the center side of the divided rectangular region 21). And an inward-facing flange portion 24 that projects outward.

  The battery frame 17 is fixed to the vehicle body skeleton member. In the present embodiment, the side end members 18s and 18s are arranged along the side member 4 and fixed to the side member 4, and the front end member 18f is arranged along the cross member 5R and fixed to the cross member 5R. The rear end member 18r is disposed along the front rear cross member 9F and fixed to the rear cross member 9F. In this case, the vehicle body frame member and each part of the battery frame 17 may be fastened with bolts and nuts, or may be spot welded.

  The battery 3 mounted on the vehicle 1 using the battery frame 17 is a battery pack that houses a plurality of unit batteries (not shown) in a casing 3a, and has a flat rectangular parallelepiped shape that is thin in the vertical direction. The casing 3a functions as a protective wall that prevents the unit battery accommodated therein from getting wet with water or pebbles.

  In the present embodiment, all three batteries 3 have the same shape. Specifically, the size of the long side in the horizontal cross section of the battery 3 is set to about twice the size of the short side, and at the bottom of the battery 3, the size is slightly smaller than the vertical and horizontal dimensions of the divided rectangular regions 21, respectively. One battery 3 is accommodated in each of the seven divided rectangular areas 21.

  As shown in FIG. 4, the battery 3 has an inward flange portion 24 that protrudes from the vertical wall portions 23 in a state where there are minute gaps 25 between the vertical wall portions 23 in the surrounding (front and rear, left and right) four sides. It is placed between the floor panel 26 and the inward flange portion 24 with a cushioning member 27 such as foamed urethane interposed between the floor panel 26 and the upper floor panel 26.

  At this time, as described above, the opening 22 is formed in each divided rectangular region 21. For this reason, the bottom of the casing 3 a of the battery 3 is exposed downward from the opening 22.

  The battery 3 is positioned with respect to the battery frame 17 at least in the vehicle front-rear direction and the vehicle width direction. This positioning may be performed by a pin and a hole, a long hole, a notch (not shown) or the like, or may be fastened by a bolt or a nut (not shown) as appropriate. Moreover, you may interpose buffer members (not shown), such as a synthetic rubber, suitably in a positioning part or a fastening part.

  In this embodiment, the harness 28 connected to each battery 3 is routed on the T-shaped member 19 along the T-shaped member 19 of the battery frame 17. And in this embodiment, the junction box 29 as an electric equipment connected to the three batteries 3 via the harness 28 is arranged on the rear battery 3 with an intermediate vertical member 19l and an intermediate horizontal member 19w of the T-shaped member 19. And the length of the harness 28 between the junction box 29 and each battery 3 can be shortened. In addition, according to the layout of the battery frame 17 of the present embodiment, the harness 28 that connects each battery 3 or the junction box 29 and the electrical equipment (for example, a motor, a control box, etc.) in the front compartment 13 at the front of the vehicle 1 is provided. Further, it can be routed along the floor tunnel portion 30 formed at the center position in the vehicle width direction at the rear portion of the front compartment 13 and the intermediate vertical member 19l located behind the floor tunnel portion 30. Therefore, the harness 28 can be easily routed in a substantially straight line along the vehicle longitudinal direction at a relatively short distance.

  The harness 28 is fixed on the T-shaped member 19 by a bracket 31 shown in FIGS. In the present embodiment, the harness 28 is sandwiched between the bracket 31 and the T-shaped member 19.

  Referring to FIG. 4, in this embodiment, it can be understood that the rear of the junction box 29 is covered with the cross bar 11, the rear rear cross member 9 </ b> R, and the panel 12. Let's go.

  As described above, in the present embodiment, by attaching the battery frame 17 to the vehicle body skeleton member, it is possible to more efficiently disperse the load applied to the vehicle body skeleton member at the time of a vehicle collision, and to improve energy absorption. . FIG. 5 is a diagram illustrating a load transmission path at the time of a rear collision, and FIG. 6 is a diagram illustrating a load transmission path at the time of a side collision. In these drawings, the input is indicated by Fi and the drag force is indicated by Fr.

  At the time of a rear collision, as shown by a thick black arrow in FIG. The front side member 14 and the like serve as a load transmission path, and the outer frame member 18 and the T-shaped member 19 of the battery frame 17 also serve as a load transmission path. In the present embodiment, the inner member 15i of the extension side member 15 extends from the rear portion of the front side member 14 (the skew portion 14i) toward the front end portion of the intermediate vertical member 19l of the T-shaped member 19, The efficiency of load transmission in the T-shaped member 19 is increased.

  Further, at the time of a side collision, as shown by black thick arrows in FIG. 6, the side member 4, the cross member 5R, the rear cross members 9F and 9R, the outrigger 7 and the like as the vehicle body skeleton members serve as a load transmission path, and the battery The outer frame member 18 and the T-shaped member 19 of the frame 17 also serve as a load transmission path. In this embodiment, the efficiency of load transmission is enhanced by the intermediate transverse member 19w among the T-shaped member 19 in particular.

  As described above, in the present embodiment, a portion extending along the pair of vehicle width directions (front end member 18f and rear end member 18r) and a portion extending along the pair of vehicle longitudinal directions (side end members 18s, 18s). And a portion extending along the vehicle width direction (intermediate horizontal member 19w) and a portion extending along the vehicle front-rear direction (intermediate vertical member 19l) within the frame of the outer frame member 18 And a T-shaped member 19 having a T-shape, and a rectangular region 20 surrounded by the outer frame member 18 is divided into three divided rectangular regions 21 by the T-shaped member 19. A battery was mounted on each of the divided rectangular areas 21. That is, the battery frame 17 can be configured to be lighter and the battery 3 can be disposed as much as the number of crosspiece members (T-shaped members 19 in this embodiment) arranged vertically and horizontally in the outer frame member 18 can be reduced. As compared with the case where there are many crosspiece members, the divided rectangular area 21 as a space to be secured can be secured more widely, and the capacity of the battery 3 can be easily secured. Further, since the T-shaped member 19 includes one member extending in the vertical and horizontal directions (that is, the intermediate vertical member 19l and the intermediate horizontal member 19w), the collision load (front) is input in the vehicle longitudinal direction and the vehicle width direction. It is possible to effectively increase the rigidity against both of the collision, the rear collision, and the collision load input during the side collision.

  In the present embodiment, the two divided rectangular areas 21 that are long in the vehicle longitudinal direction are arranged side by side along the vehicle width direction, and the divided rectangular areas 21 that are long in the vehicle width direction are arranged behind the two divided rectangular areas 21. did. In such a layout, since the intermediate vertical member 19l of the T-shaped member 19 can be extended to the rear of the floor tunnel portion 30, it is disposed in the vicinity of the battery 3 or the battery 3 (that is, the front-rear direction intermediate portion of the vehicle 1). A harness 28 that connects an electrical device (junction box 29 or the like in the present embodiment) and an electrical device (drive motor 40, charger 41, inverter 42, or the like) in the front compartment 13 is provided along the floor tunnel portion 30 and the intermediate vertical member 19l. Thus, it can be routed shorter in a substantially straight line.

  In the present embodiment, the three divided rectangular regions 21 have substantially the same shape (rectangular shape having the same size and shape). For this reason, the battery 3 mounted in the divided rectangular area 21 can have the same shape (same specification), the number of specifications of the battery 3 can be reduced, and the manufacturing cost of the battery 3 can be reduced. Can be saved, and the manufacturing cost of the vehicle 1 can be reduced.

  In the present embodiment, the divided rectangular region 21 is provided with an opening 22 that opens downward in the vehicle. For this reason, the bottom surface of the battery 3 arranged in the divided rectangular region 21 can be exposed to the lower side of the vehicle body from the opening 22, and the heat dissipation of the battery 3 can be enhanced to suppress overheating.

  In the present embodiment, the outer frame member 18 and the T-shaped member 19 are each provided with a vertical wall portion 23 extending in the vertical direction and an inward flange portion projecting horizontally from the vertical wall portion 23 toward the inside of the frame. 24, and the battery 3 was placed on the inward flange portion 24 with a gap 25 between the vertical wall portion 23 and the battery 3. For this reason, even when the outer frame member 18 or the T-shaped member 19 of the battery frame 17 is twisted, the twist is absorbed by the gap 25 and is not easily transmitted to the battery 3, thereby improving the protection of the battery 3. Can do.

  In the present embodiment, the battery 3 is sandwiched between the battery frame 17 and the floor panel 26 above the battery frame 17. For this reason, the battery 3 can be easily fixed in the vertical direction.

  In the present embodiment, the buffer member 27 is disposed between the battery 3 and the floor panel 26. For this reason, while being able to suppress rattling and vibration of the battery 3, it is possible to reduce the load input to the battery 3 and improve the protection of the battery 3. The buffer member 27 can be interposed between the battery 3 and the battery frame 17.

  In the present embodiment, an extension side member 15 is provided between the front side member 14 and the side member 4, and the extension side member 15 is connected to the battery frame 17 from the rear portion of the front side member 14 (the skew portion 14 i thereof). An inner member 15i extending toward the vehicle width direction center position of the front end member 18f, and a side end member of the battery frame 17 from the rear side of the front side member 14 (the skew portion 14i) outside the inner member 15i in the vehicle width direction. And an outer member 15o extending toward the front end position of 18s. For this reason, the extension side member 15 can efficiently transmit the load in the vehicle front-rear direction between the front side member 14 and the battery frame 17. In particular, in the layout of the present embodiment, the rear end portion of the extension side member 15 and the front end portion of the intermediate vertical member 19l of the battery frame 17 are disposed close to each other. High load transmission and shock absorption are possible.

  Further, in the present embodiment, between the rear rear cross member 9R installed along the vehicle width direction between the pair of rear side members 8 and the upper portion of the wheel house 10 covering the rear wheels 32 on both sides in the vehicle width direction. An erected cross bar 11 and a panel 12 erected between the rear rear cross member 9R and the cross bar 11 were provided. In the case of the present embodiment, since the vehicle body rigidity is improved at the center in the vehicle longitudinal direction by the amount of the battery frame 17 provided, when a collision load is input to the rear side members 8 and 8 from the rear of the vehicle at the time of a vehicle rear collision or the like. There is a risk that these rear side members 8, 8 are likely to open outward (the interval between the rear end portions is likely to be wider than the front end portion). In this respect, in the present embodiment, the rear side rear member 9R and the cross bar 11 are installed between the pair of rear side members 8 and 8, and the panel 12 is installed between them. Such an outward opening can be suppressed. Further, the rear rear member 9R, the cross bar 11, and the panel 12 on the rear side enhance the protection of an electric device (the junction box 29 in the present embodiment) disposed in front of the rear surface of the vehicle in the event of a vehicle rear surface collision or the like. There is also an advantage of being able to.

  Moreover, in this embodiment, the vehicle width direction edge part of the cross bar 11 was formed so that it might go to the vehicle front-back direction back as it went to the vehicle width direction outer side. According to such a configuration, when a forward load is input to the cross bar 11, the load can be applied in a direction in which the upper portion of the wheel house 10 is directed inward. It can be surely suppressed.

  In the present embodiment, the harness 28 connected to the battery 3 is routed along the T-shaped member 19. For this reason, it is possible to shorten the harness 28 that connects between the plurality of batteries 3 or between the battery 3 and the electrical equipment such as the junction box 29, and in addition, the harness 28 can be arranged as much as a specific routing route can be secured. The search work can be performed more easily.

  In the present embodiment, the harness 28 is routed on the T-shaped member 19. As a result, it is not necessary to secure a space for routing the harness 28 in the divided rectangular area 21 that accommodates the battery 3, and it is possible to increase the capacity of the battery 3 by installing a larger battery 3. It becomes. The same effect can be obtained when the harness 28 is routed under the T-shaped member 19 (or the inside of the T-shaped member when the T-shaped member is hollow).

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made.

  For example, the layout of the T-shaped member 19 and the divided rectangular area 21 is reversed in the front-rear direction, and the long (longitudinal) length along the vehicle front-rear direction is behind the long (horizontal) divided rectangular area 21 along the vehicle width direction. Two divided rectangular areas 21 can be provided.

  Further, as shown in FIG. 7, the rear rear cross member 9RA, the cross bar 11A, and the panel 12A can be provided in a substantially linear shape along the vehicle width direction. In this way, the rear cross member 9RA, the cross bar 11A, and the panel 12A can be configured to be lighter.

  Further, as shown in FIG. 8, the panels 12 and 12A are provided with a bent portion that bends in the front-rear direction along a bent line 43 that extends vertically, or a bead (concave groove) that extends vertically, so that at the time of a collision It is possible to increase the shock absorption by bending the same.

  Further, as shown in FIG. 9, the panel 12, 12 </ b> A can be appropriately formed with a through hole 44 to reduce the weight.

  Further, as shown in FIG. 10 and FIG. 11, it extends in the longitudinal direction middle portion of the divided rectangular region 21 of the battery frames 17 </ b> A and 17 </ b> B along the short direction and has a lower height than the outer frame member 18 and the T-shaped member 19. Flat submembers 33 and 33r can be provided. By providing such submembers 33 and 33r, it is possible to increase the rigidity of the battery frames 17A and 17B and thus the rigidity of the vehicle body, and further increase the load transmission efficiency at the time of a collision. As shown in FIG. 11, when the sub member 33 is provided in each divided rectangular area 21, two batteries (not shown) having a square shape in plan view are provided in each of the divided rectangular areas 21. ) Can be accommodated in a state in which a part of the peripheral edge of the bottom is placed on the sub-members 33 and 33r.

DESCRIPTION OF SYMBOLS 1 Vehicle 3 Battery 4 Side member 8 Rear side member 9R, 9RA Rear cross member 10 Wheel house 11, 11A Cross bar 12, 12A Panel 14 Front side member 15 Extension side member 15i Inner member 15o Outer member 17, 17A, 17B Battery frame 18 Outer frame member 18f Front end member 18r Rear end member 18s Side end member 19 T-shaped member 19l Intermediate longitudinal member 19w Intermediate lateral member 20 Rectangular region 21 Divided rectangular region 22 Opening portion 23 Vertical wall portion 24 Inward flange portion 25 Gap 26 Floor panel 27 Buffer member 28 Harness 29 Junction box 32 Rear wheel

Claims (2)

In a vehicle battery mounting structure having a battery frame for attaching a plurality of batteries to the lower part of the vehicle body,
The battery frame includes an outer frame member having a rectangular shape with a portion extending along a pair of vehicle width directions and a portion extending along a pair of vehicle longitudinal directions,
A pair of side members extending along the front-rear direction on both sides in the vehicle width direction of the vehicle center in the front-rear direction;
A pair of front side members extending along the front-rear direction on both sides in the vehicle width direction of the front of the vehicle;
An extension side member provided between the front side member and the side member;
With
The outer frame member includes a front end member extending along the vehicle width direction at a vehicle front-rear direction front end portion, and a pair of side end members extending along the vehicle front-rear direction at both end portions in the vehicle width direction and attached to the side members, respectively. An intermediate vertical member extending rearward from the front end member in the frame of the outer frame member ,
The extension side member includes an inner member extending from the rear portion of the front side member toward the vicinity of the front end of the intermediate vertical member of the front end member, and the side end from the rear portion of the front side member outside the inner member in the vehicle width direction. An outer member extending toward the front end position of the member;
The battery mounting structure of the vehicle characterized by including. A pair of rear side members connected to the rear end of the side member and extending along the vehicle longitudinal direction on both sides in the vehicle width direction of the vehicle rear;
A pair of rear cross members erected along the vehicle width direction between the pair of rear side members;
A cross bar constructed between the upper parts of the wheel house covering the rear wheels on both sides in the vehicle width direction,
A panel constructed between one member of the pair of rear cross members and the cross bar;
With
The outer frame member includes a rear end member that extends along a vehicle width direction at a rear end portion in the vehicle front-rear direction and is attached to the other member of the pair of rear cross members . Item 2. A vehicle battery mounting structure according to Item 1.

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