Battery mounting structure

Abstract

To provide a mounting structure for a battery by which the battery can be protected even in the event that a vehicle is bumped from behind.SOLUTION: A mounting structure for a battery includes: a cross member provided along a vehicle width direction; a rear frame provided along the vehicle width direction with a space left from the cross member behind the cross member in a vehicle length direction; and a support frame provided between the cross member and the rear frame and supporting a battery installed between the cross member and the rear frame; wherein the support frame has: a battery installation portion including an installation area for the battery and extending in the vehicle length direction, and a rear frame connection portion extending in the vertical direction from a rear end of the battery installation portion toward the rear frame and connecting the rear end of the battery installation portion and the rear frame; and wherein the battery installation portion has a reinforcing element for increasing rigidity in the vehicle length direction from the rear frame connection portion.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a battery mounting structure. [Background technology]

[0002] Patent Document 1 discloses a battery mounting structure including a vehicle rear floor and a battery accommodated in a recess formed in the vehicle rear floor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6528674 Summary of the Invention [Problem to be solved by the invention]

[0004] In the battery mounting structure disclosed in Patent Document 1, if the vehicle is hit from behind, the support frame on which the battery is mounted may be deformed, which may result in damage to the battery.

[0005] In view of the above circumstances, an object of at least one embodiment of the present invention is to provide a battery mounting structure that can protect the battery even when the vehicle is hit from behind. [Means for solving the problem]

[0006] A battery mounting structure in at least one embodiment of the present invention comprises a cross member arranged along the vehicle width direction, a rear frame arranged along the vehicle width direction behind the cross member in the vehicle fore-and-aft direction and spaced from the cross member, and a support frame arranged between the cross member and the rear frame and supporting a battery installed between the cross member and the rear frame, wherein the support frame has a battery installation section that includes an installation area for the battery and extends in the fore-and-aft direction of the vehicle, and a rear frame connection section that extends in the up-and-down direction from the rear end of the battery installation section toward the rear frame and connects the rear end of the battery installation section to the rear frame, and the battery installation section has a reinforcing element for increasing rigidity in the vehicle fore-and-aft direction more than the rear frame connection section.

[0007] According to the above configuration, since the battery installation section has a higher rigidity in the front-rear direction of the vehicle than the rear frame connection section, even if the vehicle is rear-ended and the support frame is deformed, the rear frame connection section bends first, preventing bending of the battery installation section. This prevents damage to the battery, and therefore protects the battery even if the vehicle is hit.

[0008] In the battery mounting structure according to the embodiment of the present invention, in the above-described configuration, the reinforcing element is a protrusion that protrudes and extends over the entire area of ​​the battery installation portion in the vehicle front-rear direction.

[0009] According to the above configuration, it is possible to increase the rigidity of the battery installation portion in the vehicle fore-and-aft direction more than that of the rear frame connection portion, at low cost and in a space-saving manner.

[0010] In the battery mounting structure according to the embodiment of the present invention, in the above-described configuration, the reinforcing element is a protrusion that protrudes downward in the vehicle up-down direction.

[0011] According to the above configuration, since the upper surface of the battery installation part is flat, the battery can be stably installed on the battery installation part.

[0012] In the battery mounting structure of an embodiment of the present invention, in the above-mentioned configuration, the battery has an inclined surface that gradually becomes lower toward the front in the fore-and-aft direction of the vehicle relative to a bottom surface installed on the support frame, while having an abutment surface that abuts against the inclined surface of the battery, and is provided with a bracket installed forward in the fore-and-aft direction of the battery.

[0013] According to the above-mentioned configuration, the inclined surface of the battery abuts against the abutment surface of the bracket, so that the bracket supports the battery even if the vehicle is rear-ended and the battery is pushed forward in the fore-and-aft direction of the vehicle, thereby protecting the battery even if the vehicle is rear-ended and the battery is pushed forward in the fore-and-aft direction of the vehicle.

[0014] The battery mounting structure according to an embodiment of the present invention, in the above-mentioned configuration, is provided with a stopper that has an abutment surface that abuts against the front surface of the battery that is forward in the vehicle fore-and-aft direction and is installed forward in the vehicle fore-and-aft direction of the battery.

[0015] According to the above-mentioned configuration, the front surface of the battery abuts against the abutment surface of the stopper, so that the stopper supports the battery even if the vehicle is rear-ended and the battery is pushed forward in the vehicle front-rear direction. This prevents the battery from jumping out in the vehicle front-rear direction, so that the battery can be protected even if the vehicle is rear-ended and the battery is pushed forward in the vehicle front-rear direction.

[0016] In the battery mounting structure of an embodiment of the present invention, in the above-mentioned configuration, the support frame is a pair of support frames spaced apart in the vehicle width direction, and the stopper is installed at the front end of the support frame of the pair of support frames that is on the outer side in the vehicle width direction.

[0017] According to the above configuration, since the stopper is installed on the extension line of the support frame in the vehicle longitudinal direction, the stopper efficiently supports the battery when the vehicle is rear-ended and the battery is pushed forward in the vehicle longitudinal direction. This efficiently prevents the battery from jumping out in the vehicle longitudinal direction, so that the battery can be efficiently protected even if the vehicle is rear-ended and the battery is pushed forward in the vehicle longitudinal direction.

[0018] In the battery mounting structure of an embodiment of the present invention, in the above-mentioned configuration, the support frame is a pair of support frames spaced apart in the vehicle width direction, and the bracket is installed more inward in the vehicle width direction than the support frame that is on the outer side in the vehicle width direction of the pair of support frames.

[0019] According to the above configuration, the inclined surface of the battery abuts against the abutment surface of the bracket on the inside of the outer support frame in the vehicle width direction of the pair of support frames, so that even if the vehicle is rear-ended and the battery is pushed forward in the vehicle front-rear direction, the input of force from the bracket to the battery is suppressed. This makes it possible to prevent the bracket from penetrating into the battery even if the vehicle is rear-ended and the battery is pushed forward in the vehicle front-rear direction. Effect of the Invention

[0020] According to at least one embodiment of the present invention, even if the vehicle is rear-ended and the support frame is deformed, the rear frame connection portion bends first, and bending of the battery installation portion is prevented, thereby preventing damage to the battery and protecting the battery. [Brief description of the drawings]

[0021] [Figure 1] 1 is a diagram showing a schematic diagram of a battery pack employing a battery mounting structure according to an embodiment of the present invention; [Diagram 2] 2 is a perspective view showing a schematic internal structure of the battery pack shown in FIG. 1. [Diagram 3] 1 is a perspective view showing a battery mounting structure according to an embodiment of the present invention; [Figure 4] 4 is a cross-sectional view showing a schematic view of the battery mounting structure shown in FIG. 3. [Diagram 5] 2 is a perspective view of the front frame, the rear frame, and the pair of support frames as viewed diagonally from the front of the vehicle. [Figure 6] 2 is a perspective view of the front frame, the rear frame, and the pair of support frames as viewed diagonally from the rear of the vehicle. [Figure 7] 5 is a cross-sectional view showing a schematic view of the battery mounting structure shown in FIG. 4, illustrating a state after the vehicle has been rear-ended. FIG. [Figure 8] 1 is a perspective view showing a battery mounting structure according to an embodiment of the present invention; [Figure 9] 9 is a cross-sectional view taken along line IX-IX and showing the details of the battery mounting structure shown in FIG. 8. [Figure 10] 9 is a cross-sectional view taken along line XX showing the details of the battery mounting structure shown in FIG. 8. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as the embodiment or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present invention.

[0023] Fig. 1 is a schematic diagram of a battery pack 1 employing a mounting structure for a battery 16 according to an embodiment of the present invention. As shown in Fig. 1, the battery pack 1 employing the mounting structure for a battery 16 according to an embodiment of the present invention is a battery pack installed in a vehicle cabin, and is installed in the lower area of ​​the third row of seats or the lower area of ​​the luggage compartment along the vehicle width direction.

[0024] The battery pack 1 employing the mounting structure for the battery 16 according to the embodiment of the present invention is provided with an inlet (not shown) for taking in air for cooling the battery and an outlet (not shown) for discharging the air taken in from the inlet. An inlet duct 13 is connected to the inlet provided in the battery pack 1. The inlet duct 13 is a duct for introducing air for cooling the battery from the inside of the vehicle cabin to the battery pack 1, and an end opposite to the end connected to the inlet provided in the battery pack 1 opens in the vehicle cabin, for example, at the waist position of an occupant seated in a three-row seat. An outlet duct (not shown) is connected to the outlet provided in the battery pack 1. The outlet duct is a duct for circulating the air discharged from the battery pack 1 into the vehicle cabin, and an end opposite to the end connected to the outlet provided in the battery pack 1 opens in the vehicle cabin, for example, at the foot position of an occupant seated in a three-row seat.

[0025] Furthermore, the battery pack 1 employing the mounting structure for the battery 16 according to the embodiment of the present invention is provided with an exhaust port (not shown) for discharging gas generated inside the battery pack. An exhaust pipe 15 is connected to the exhaust port provided in the battery pack 1. The exhaust pipe 15 is a pipe for discharging gas generated inside the battery pack to the outside of the vehicle cabin, and an end of the exhaust pipe 15 opposite to the end connected to the exhaust port provided in the battery pack 1 extends to the outside of the vehicle cabin, for example, below the floor panel 2 (see FIG. 4), and opens outside the vehicle cabin.

[0026] FIG. 2 is a perspective view showing a schematic internal structure of the battery pack 1 shown in FIG. 1. As shown in FIG. 2, the battery pack 1 employing the mounting structure for the battery 16 according to the embodiment of the present invention includes a battery tray 11 and a battery cover 12 (see FIG. 1). The battery tray 11 is a storage container for storing the battery 16, and in the battery pack 1 employing the mounting structure for the battery 16 according to the embodiment of the present invention, the battery tray 11 is configured as a container with a shallow rectangular shape when viewed from above the vehicle, with an open upper surface extending along the vehicle width direction. The battery cover 12 is a cover for covering the battery 16 stored in the battery tray 11, and in the battery pack 1 employing the mounting structure for the battery 16 according to the embodiment of the present invention, the battery cover 12 is configured as a container with a rectangular shape when viewed from above the vehicle, with an open lower surface extending along the vehicle width direction, and with approximately the same size as the battery tray 11.

[0027] As shown in FIG. 2, the battery pack 1 employing the mounting structure for the battery 16 according to the embodiment of the present invention includes the battery 16, a DCDC converter (not shown), and a fan 19.

[0028] The battery 16 is, for example, charged with electricity obtained by regenerating the deceleration energy of the vehicle, and supplies electricity to the motor to reduce the load on the engine when the vehicle accelerates. The battery 16 is, for example, capable of being charged with electricity of a voltage of 48 V, which is higher than the system voltage of 12 V, and is, for example, configured by a battery module in which a plurality of lithium-ion batteries are connected in series. The battery 16 is installed on the inlet side of the battery pack 1, and the battery 16 is cooled by the air for cooling the battery taken into the battery pack 1 flowing around the battery 16. The battery 16 is provided with a smoke exhaust cover 17. The smoke exhaust cover 17 is for preventing gas from leaking into the vehicle cabin, and even if gas is generated inside the battery 16 due to damage to the battery 16, the gas will not leak into the vehicle cabin.

[0029] The DCDC converter is for converting voltage when supplying electricity from the battery 16 to electrical equipment, for example. The DCDC converter can convert a charging voltage of 48 V to a system voltage of 12 V, for example. The DCDC converter is installed downstream of the battery 16 in the battery pack 1, and the air that has cooled the battery 16 flows around the DCDC converter to cool the DCDC converter.

[0030] The fan 19 is for taking in air for cooling the battery into the battery pack 1. The fan 19 is installed, for example, downstream of the DCDC converter, for example, on the outlet side of the battery pack 1. In the battery pack 1 employing the mounting structure of the battery 16 according to the embodiment of the present invention, the fan 19 is installed above the DCDC converter and takes in air for cooling the battery from the inlet of the battery pack 1, while exhausting the air that has passed around the battery 16 and the DCDC converter and been heated from the outlet of the battery pack 1.

[0031] Fig. 3 is a perspective view showing a schematic mounting structure for a battery 16 according to an embodiment of the present invention. As shown in Fig. 3, the mounting structure for a battery 16 according to an embodiment of the present invention includes a cross member 3 (see Fig. 4), a rear frame 4, and a pair of support frames 5 (see Fig. 4).

[0032] The cross member 3 is a skeletal member that constitutes the vehicle and is provided along the vehicle width direction. For example, the cross member 3 is formed by joining a groove-shaped member 31 with an open lower surface and a groove-shaped member 32 with an open upper surface to the floor panel 2 (see FIG. 4).

[0033] A front frame 33 is attached to the cross member 3. The front frame 33 is a member for attaching the battery pack 1 to the cross member 3, and constitutes a part of the battery pack 1 (see FIG. 4). For example, the front frame 33 is provided along the vehicle width direction, and a cross section extending in the vehicle front-rear direction is formed in a stepped shape along the cross section of the cross member 3 extending in the vehicle front-rear direction. An upper step portion 33a of the front frame 33 is fixed to the top surface of the cross member 3, and a step portion 33c connecting the upper step portion 33a and the lower step portion 33b of the front frame 33 is disposed along the side surface of the cross member 3.

[0034] The rear frame 4 is a member for mounting the battery pack 1 on the vehicle, and constitutes a part of the battery pack 1. The rear frame 4 is provided along the vehicle width direction, and is bridged over a pair of side members (not shown) that extend along the vehicle front-rear direction on both sides in the vehicle width direction. The rear frame 4 is groove-shaped with an open upper surface, is higher than the pair of side members on the inner side of both ends in the vehicle width direction, and is wider in the vehicle front-rear direction at both ends in the vehicle width direction. The rear frame 4 is fixed to the pair of side members by bolts 41 that pass through holes provided at both ends in the vehicle width direction.

[0035] A frame cover 42 is attached to the rear frame 4. The frame cover 42 reinforces an area of ​​the rear frame 4 corresponding to the installation area of ​​the battery 16. The frame cover 42 is provided along the vehicle width direction, and is provided over approximately two-thirds of the left side of the vehicle corresponding to the installation area of ​​the battery 16. The frame cover 42 is groove-shaped with an open bottom, and is fitted into an opening in the top surface of the rear frame 4 (see FIG. 4).

[0036] FIG. 4 is a cross-sectional view that shows a schematic mounting structure of the battery 16 shown in FIG. 3. As shown in FIG. 4, the pair of support frames 5 are provided between the cross member 3 and the rear frame 4, and support the battery 16 installed between the cross member 3 and the rear frame 4. The pair of support frames are provided along the inner wall surface of the battery tray 11 in the vehicle longitudinal direction. The pair of support frames 5 each have a battery installation section 5a and a rear frame connection section 5b. The battery installation section 5a is a portion of the support frame 5 that extends in the vehicle longitudinal direction, and includes an installation area for the battery 16. The battery installation section 5a includes an area for bending the rear frame connection section 5b in addition to the installation area for the battery 16. As a result, a predetermined interval is provided between the battery 16 installed in the battery installation section 5a and the rear frame connection section 5b, and the battery 16 installed in the battery installation section 5a and the rear frame connection section 5b are separated by a predetermined interval. The rear frame connection portion 5b is a portion of the support frame 5 that extends in the up-down direction from the rear end of the battery installation portion 5a toward the rear frame 4, and connects the rear end of the battery installation portion 5a to the rear frame 4. As a result, one end of the rear frame connection portion 5b is connected to the rear end of the battery installation portion 5a, and the other end is connected to the rear frame 4. In the example shown in FIG. 4, the battery 16 installed between the cross member 3 and the rear frame 4 is installed obliquely so that the front side in the vehicle longitudinal direction is gradually higher than the rear side. In the support frame 5 that supports the battery 16, the battery installation portion 5a is inclined so as to gradually lower from the front to the rear in the vehicle longitudinal direction, and the rear frame connection portion 5b is inclined so as to gradually higher from the front to the rear in the vehicle longitudinal direction. The other end of the rear frame connection portion 5b extends along the vehicle longitudinal direction and is connected to the lower surface of the rear frame 4.

[0037] FIG. 5 is a perspective view of the front frame 33, the rear frame 4, and the pair of support frames 5 as viewed obliquely from the front of the vehicle, and FIG. 6 is a perspective view of the front frame 33, the rear frame 4, and the pair of support frames 5 as viewed obliquely from the rear of the vehicle. As shown in FIG. 5 and FIG. 6, the battery installation section 5a in the support frame 5 has a reinforcing element for increasing the rigidity in the vehicle longitudinal direction more than the rear frame 4. For example, the reinforcing element is a protrusion 5a1 formed in the battery installation section 5a. The protrusion 5a1 extends over the entire area in the vehicle longitudinal direction in the battery installation section 5a. For example, the protrusion 5a1 protrudes downward in the vehicle vertical direction. For example, the protrusion 5a1 is formed of a bead, but the protrusion 5a1 is not limited to a bead and may be, for example, a reinforcing member joined to the battery installation section 5a.

[0038] Fig. 7 is a cross-sectional view showing the mounting structure of the battery 16 shown in Fig. 4, showing the state after the vehicle is rear-ended. As shown in Fig. 7, according to the mounting structure of the battery 16 according to the embodiment of the present invention described above, the battery installation part 5a has a higher rigidity in the vehicle front-rear direction than the rear frame connection part 5b, so that even if the vehicle is rear-ended and the support frame 5 is deformed, the rear frame connection part 5b bends first, and bending of the battery installation part 5a is avoided. This prevents damage to the battery 16, so that the battery 16 can be protected even if the vehicle is rear-ended.

[0039] Furthermore, as described above, when the reinforcing element is a protrusion 5a1 formed in the battery installation portion 5a and is a protrusion 5a1 extending over the entire area of ​​the battery installation portion 5a in the fore-and-aft direction of the vehicle, the rigidity of the battery installation portion 5a in the fore-and-aft direction of the vehicle can be increased at low cost and in a space-saving manner compared to the rear frame connection portion 5b.

[0040] Furthermore, as described above, when the reinforcing element is a protrusion 5a1 that protrudes downward in the vertical direction of the vehicle, the upper surface of the battery installation section 5a becomes a flat surface, so that the battery 16 can be stably installed on the battery installation section 5a.

[0041] FIG. 8 is a perspective view showing a mounting structure of the battery 16 according to the embodiment of the present invention. FIG. 9 is a cross-sectional view of the mounting structure of the battery 16 shown in FIG. 8 taken along line IX-IX, and FIG. 10 is a cross-sectional view of the mounting structure of the battery 16 shown in FIG. 8 taken along line XX. As shown in FIG. 8, the battery 16 has an inclined surface 16a1a (see FIG. 9) that is gradually lowered toward the front in the vehicle front-rear direction with respect to the bottom surface installed on the support frame 5, while the mounting structure of the battery 16 according to the embodiment of the present invention includes a bracket 7. The bracket 7 has an abutment surface 72a that abuts against the inclined surface 16a1a of the battery 16, and is installed in front of the battery 16 in the vehicle front-rear direction. For example, the bracket 7 is installed inward from about one-third of the outer side of the battery 16 in the vehicle width direction.

[0042] 9, the battery 16 has the above-mentioned inclined surface 16a1a on the protrusion 16a provided at the front lower end of the battery 16 in the vehicle front-rear direction. The protrusion 16a has an inclined portion 16a1 on which the above-mentioned inclined surface 16a1a is provided, and an upright portion 16a2 extending downward from an end of the inclined portion 16a1. The end of the upright portion 16a2 opposite to the end connected to the inclined portion 16a1 is open, and when the inclined portion 16a1 or the upright portion 16a2 is pressed from the front in the vehicle front-rear direction, the protrusion 16a is bent toward the battery.

[0043] The bracket 7 has a fixing tool 71 and a support tool 72. The fixing tool 71 is fixed to the front frame 33, and is provided, for example, along the vehicle longitudinal direction. The fixing tool 71 has a groove-shaped cross section that opens downward, and flanges 71a and 71b are provided on both sides of the cross section. A weld nut 71c is provided on the lower surface of the fixing tool 71. The fixing tool 71 is fixed to the front frame 33 by joining one flange 71a to the upper stage 33a of the front frame 33 and joining the other flange 71b to the lower stage 33b of the front frame 33. The support tool 72 is attached to the fixing tool 71 and supports the above-mentioned inclined surface 16a1a of the battery 16, and is provided, for example, along the vehicle longitudinal direction. The support tool 72 is hook-shaped, and has an abutment surface 72a (inclined surface) at its tip that abuts against the inclined surface 16a1a of the battery 16, and a valley-shaped bend 72b at its base end. The support 72 has a through hole on the base end side, and is attached to the fixture 71 by fitting a bolt 73 that passes through the through hole into a weld nut 71 c provided on the fixture 71 .

[0044] According to the mounting structure for the battery 16 according to the embodiment of the present invention described above, the inclined surface 16a1a of the battery 16 abuts against the abutment surface 72a (inclined surface) at the tip of the support 72 of the bracket 7, so that even if the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle fore-and-aft direction, the bracket 7 supports the battery 16. This makes it possible to protect the battery 16 even if the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle fore-and-aft direction.

[0045] Furthermore, even if the vehicle is rear-ended and the battery 16 is pushed forward, the protruding piece 16a of the battery 16 bends toward the battery, so that the impact applied to the battery 16 when the vehicle is rear-ended can be mitigated.

[0046] As shown in Fig. 8, the mounting structure for the battery 16 according to the embodiment of the present invention includes a stopper 8. As shown in Fig. 10, the stopper 8 has an abutment surface 8a that abuts against the front surface of the battery 16 that is forward in the vehicle front-rear direction, and is installed forward in the vehicle front-rear direction of the battery 16. For example, the stopper 8 is installed at a position approximately one-fifth of the outer side of the battery 16 in the vehicle width direction.

[0047] 10, the stopper 8 has an arm portion extending rearward in the vehicle front-rear direction and an abutment portion provided at the tip of the arm portion and abutting against the front surface of the battery 16, which is forward in the vehicle front-rear direction. A through hole is provided at the base end of the arm portion, and a stud bolt 33a1 provided on the upper surface of the upper stage portion 33a of the front frame 33 is inserted into the through hole. A nut 81 is fitted onto the stud bolt 33a1 inserted into the through hole, thereby fixing the stopper 8 to the upper stage portion 33a of the front frame 33.

[0048] According to the mounting structure for the battery 16 according to the embodiment of the present invention described above, the front surface of the battery 16 abuts against the abutment surface of the stopper, so that even if the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle fore-and-aft direction, the stopper 8 supports the battery 16. This prevents the battery 16 from jumping out forward in the vehicle fore-and-aft direction, so the battery 16 can be protected even if the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle fore-and-aft direction.

[0049] 5 and 6, the mounting structure for the battery 16 according to the embodiment of the present invention includes a reinforcing member 6 between the cross member 3 and the rear frame 4. The reinforcing member 6 is for maintaining the distance between the cross member 3 and the rear frame 4. The reinforcing member 6 is installed slightly to the right of the center in the vehicle width direction, avoiding the area where the battery 16 is installed. The reinforcing member 6 is a member in the shape of a square tube with a rectangular cross section, and one end is connected to the front frame 33 and the other end is connected to the rear frame 4.

[0050] According to the mounting structure for the battery 16 according to the embodiment of the present invention described above, the reinforcing member 6 maintains the distance between the cross member 3 and the rear frame 4, so that even if the vehicle is rear-ended, the reinforcing member 6 maintains the distance between the cross member 3 and the rear frame 4. This makes it possible to protect the battery 16 mounted on the support frame 5 provided between the cross member 3 and the rear frame 4.

[0051] As shown in FIG. 8, in the mounting structure for a battery 16 according to the embodiment of the present invention, a stopper 8 is provided at the front end of the pair of support frames 5 which is the outer support frame 5 in the vehicle width direction.

[0052] According to the mounting structure for the battery 16 according to the embodiment of the present invention described above, the stopper 8 is installed on the extension line of the support frame 5 in the vehicle front-rear direction, so that when the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle front-rear direction, the stopper 8 efficiently supports the battery 16. This efficiently prevents the battery 16 from jumping out forward in the vehicle front-rear direction, so that the battery can be efficiently protected even if the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle front-rear direction.

[0053] As shown in FIG. 8, in the mounting structure for the battery 16 according to the embodiment of the present invention, the bracket 7 is installed on the inner side in the vehicle width direction of the outer support frame 5 of the pair of support frames 5 in the vehicle width direction.

[0054] According to the mounting structure for the battery 16 according to the embodiment of the present invention described above, the inclined surface 16a1a of the battery 16 abuts against the abutment surface 72a of the bracket 7 on the inside of the outer support frame 5 in the vehicle width direction of the pair of support frames 5, so that even if the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle front-rear direction, the input of force from the bracket 7 to the battery 16 is suppressed. This makes it possible to prevent the bracket 7 from entering the battery 16 even if the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle front-rear direction.

[0055] As shown in FIG. 8, when the mounting structure for battery 16 according to the embodiment of the present invention includes the bracket 7 and stopper 8 described above, the bracket 7 is disposed inside the stopper 8 in the vehicle width direction.

[0056] According to the mounting structure for the battery 16 according to the embodiment of the present invention described above, the bracket 7 is closer to the reinforcing member 6, so that even if the vehicle is rear-ended, the input of force from the bracket 7 to the battery 16 is suppressed. This makes it possible to protect the battery 16 mounted on the support frame 5 provided between the cross member 3 and the rear frame 4. In addition, since the stopper 8 is provided on the outer side of the bracket 7 in the vehicle width direction, even if the vehicle is rear-ended and the battery 16 is pushed forward in the vehicle front-rear direction, the stopper 8 supports the battery 16, so that the input of force from the bracket 7 to the battery 16 is suppressed. This also makes it possible to protect the battery 16 mounted on the support frame 5 provided between the cross member 3 and the rear frame 4.

[0057] The present invention is not limited to the above-described embodiment, and includes modifications to the above-described embodiment and appropriate combinations of these modifications. [Explanation of symbols]

[0058] 1 Battery pack 11 Battery Tray 12 Battery cover 13 Inlet Duct 15 Exhaust pipe 16 Battery 16a Projection piece 16a1 Slope section 16a1a Slope 16a2 Upright part 17 Smoke exhaust cover 19 Fans 2 Floor Panel 3 Cross member 31,32 Channel-shaped members 33 Front Frame 33a Upper section 33a1 stud bolt 33b Lower section 33c Step 4 Rear Frame 41 Volts 42 Frame cover 5 Support frame 5a Battery installation section 5a1 Protrusion 5b Rear frame connection 6 Reinforcing members 7 Bracket 71 Fixtures 71a, 71b flange 71c weld nut 72 Supports 72a Contact surface 72b Bend 73 Volts 8 Stopper 8a Contact surface 81 Nut

Claims

1. A cross member provided along the vehicle width direction; a rear frame provided along the vehicle width direction at a distance from the cross member behind the cross member in the vehicle front-rear direction; A support frame provided between the cross member and the rear frame and supporting a battery installed between the cross member and the rear frame; Equipped with the support frame includes an installation area for the battery and includes a battery installation section extending in a front-rear direction of the vehicle; and a rear frame connection section that is integral with the battery installation section, rises from a rear end of the battery installation section, extends in a vertical direction toward the rear frame, and connects the rear end of the battery installation section and the rear frame, The battery installation portion has a reinforcing element for increasing rigidity in a vehicle front-rear direction more than the rear frame connection portion, The reinforcing element is a protrusion that protrudes downward in the vehicle vertical direction. Battery mounting structure.

2. The reinforcing element is a protrusion that extends and protrudes over the entire area of ​​the battery installation portion in the vehicle front-rear direction, The battery mounting structure according to claim 1 .

3. The battery has a slope that is gradually lowered toward the front in the vehicle front-rear direction with respect to a bottom surface that is installed on the support frame, a bracket having an abutment surface that abuts against the inclined surface of the battery and is installed in front of the battery in a vehicle front-rear direction; 3. A battery mounting structure according to claim 1 or 2.

4. a stopper having an abutment surface that abuts against a front surface of the battery that is in the front of the vehicle in the front-rear direction, the stopper being installed in the front of the battery in the front-rear direction of the vehicle; The battery mounting structure according to any one of claims 1 to 3.

5. The support frame is a pair of support frames spaced apart in the vehicle width direction, The stopper is provided at a front end portion of the support frame that is on the outer side in the vehicle width direction out of the pair of support frames.

5. The battery mounting structure according to claim 4.

6. The support frame is a pair of support frames spaced apart in the vehicle width direction, The bracket is installed on the inner side in the vehicle width direction of the outer support frame of the pair of support frames. The battery mounting structure according to claim 3.

7. A cross member provided along the vehicle width direction; a rear frame provided along the vehicle width direction at a distance from the cross member behind the cross member in the vehicle front-rear direction; A support frame provided between the cross member and the rear frame and supporting a battery installed between the cross member and the rear frame; Equipped with the support frame includes an installation area for the battery and includes a battery installation section extending in a front-rear direction of the vehicle; and a rear frame connection section that is integral with the battery installation section, rises from a rear end of the battery installation section, extends in a vertical direction toward the rear frame, and connects the rear end of the battery installation section and the rear frame, The battery installation portion has a reinforcing element for increasing rigidity in a vehicle front-rear direction more than the rear frame connection portion, The reinforcing element is a protrusion that extends and protrudes over the entire area of ​​the battery installation portion in the vehicle front-rear direction, Battery mounting structure.

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