Vehicle battery unit arrangement structure

Abstract

To provide a structure making it possible to dispose a battery unit 6 ahead of a front seat and to preserve a space at the foot of an occupant of the front seat.SOLUTION: A battery unit arrangement structure includes a dash panel vertical wall 4 partitioning a vehicle compartment 1 and an engine room 11 from each other, a floor panel 2 forming the floor of the vehicle compartment 1, and a corner 5 bent to connect a lower end of the dash panel vertical wall 4 and a front end of the floor panel. A battery unit 6 is attached to the corner 5 ahead of a front seat with the top face inclined to descend backward in a vehicle so that the rear end is located at a lower position than the front end is. The battery unit 6 is shielded from above with a cover member 8 that is inclined to descend backward in the vehicle so that the rear end is located at the lower position than the front end is.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle battery unit mounting structure. [Background technology]

[0002] Patent Document 1 describes a storage space provided below the instrument panel in front of the passenger seat of a vehicle, in which an on-board battery and on-board equipment are placed. The on-board battery is held in the storage space by a battery tray. The battery tray has a recess that holds the lower end of the on-board battery and a rear wall panel provided at the rear end of the recess. Therefore, the storage space and the space under the passenger's feet are separated by this vertical wall. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-88503 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to ensure sufficient legroom for the passenger, it is preferable to position the vehicle battery below the instrument panel as far forward as possible. However, if the vehicle battery is positioned on the floor panel as in Patent Document 1, the position where the vehicle battery can be positioned is limited, which reduces the legroom for the passenger, raising concerns that the passenger may feel confined.

[0005] Therefore, the present invention provides a structure that allows the battery unit to be disposed in front of the passenger seat and still ensures sufficient leg space for the passenger. [Means for solving the problem]

[0006] To achieve this objective, the present invention provides a curved corner portion connecting the dash panel vertical wall portion and the floor panel, and positions the battery unit at this corner portion so that its upper surface slopes downward toward the rear of the vehicle.

[0007] Specifically, the vehicle battery unit arrangement structure disclosed herein includes a dash panel vertical wall portion that separates a vehicle interior from an engine compartment; a floor panel that forms a floor surface of the vehicle compartment; a curved corner portion connecting a lower end of the dash panel vertical wall portion and a front end of the floor panel, The battery unit is attached to the corner portion in front of the passenger seat with its upper surface inclined downward toward the rear of the vehicle so that its rear end is lower than its front end, The battery unit is covered from above by a cover member that slopes downward toward the rear of the vehicle so that its rear end is lower than its front end. The battery unit comprises a mounting bracket fixed to the corner portion, a battery placed on the mounting bracket, and a battery clamp hung from above on the battery and fastened to a fastening portion of the mounting bracket extending outward from the battery, the mounting bracket being provided with a cover member fastening portion for fastening an edge of the cover member, the mounting bracket having a mounting surface on which the battery is placed, a front rising portion rising from the front end of the mounting surface, and a front fastening portion provided at the upper end of the front rising portion, the battery clamp having an abutting portion that contacts the upper surface of the battery and a bent portion bent downward from the rear end of the abutting portion, the front end of the abutting portion extending above the front rising portion and fastened to the front fastening portion. It is characterized by:

[0008] This arrangement utilizes the curved shape of the corners to position the battery unit so that its upper surface slopes downward toward the rear of the vehicle. This allows the battery unit to be positioned closer to the vertical wall of the dash panel than if the upper surface of the battery unit were positioned horizontally. This allows for more space for the passenger's feet. Furthermore, the upper portion of the cover member, which slopes downward toward the rear of the vehicle, can be used as a footrest for the passenger. This improves comfort and reduces the sense of oppression felt by the passenger in the passenger seat. Furthermore, the cover member can be fixed to the vehicle body without spreading the fixing edge of the cover member outward from the mounting bracket, which is advantageous for making the cover member more compact.

[0009] In one embodiment, a gap is provided between the battery unit and the dash panel vertical wall portion.

[0010] This prevents the dash panel vertical wall portion from coming into contact with the battery unit when the dash panel vertical wall portion moves rearward in the event of a frontal collision of the vehicle, thereby mitigating the impact that the battery unit receives in the event of a frontal collision of the vehicle.

[0011] Furthermore, the curved shape of the corners is utilized to position the battery unit so that the upper surface slopes downward toward the rear of the vehicle, so even if the battery unit is positioned closer to the front, a gap can be maintained between the top of the battery unit and the vertical wall of the dash panel.

[0014] In one embodiment, the cover member fixing portion is disposed adjacent to a fixing portion of the mounting bracket to the corner portion.

[0015] If the support rigidity of the cover member is low, an occupant who places their feet on the top of the cover member may feel uncomfortable. According to this embodiment, the support rigidity of the cover member can be improved, thereby reducing the discomfort felt by the occupant.

[0016] In one embodiment, an on-vehicle device to which power is supplied from the battery unit is provided adjacent to the battery unit in the vehicle width direction, The battery unit and the in-vehicle device are covered from above by the cover member.

[0017] This allows the battery unit and on-board equipment to be efficiently placed together, utilizing the wide space in the corners along the vehicle width. It also shortens the harnesses that supply power to the on-board equipment, allowing for more compact electrical connections.

[0018] In one embodiment, a main battery is disposed in the engine compartment, and the battery unit is a sub-battery unit having a smaller capacity than the main battery. [Effects of the Invention]

[0019] According to the present invention, the battery unit is disposed in the corner portion so that the upper surface is inclined toward the rear of the vehicle, so that the battery unit can be disposed in front of the passenger seat while still ensuring sufficient legroom for the passenger. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a rear view showing the front of the passenger seat. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 3 is a schematic diagram of the main part in FIG. [Figure 4] FIG. 4 is a top view of the corner portion with the floor mat and the cover member omitted. [Figure 5] FIG. 5 is a perspective view of FIG. 4 as seen from behind. [Figure 6] FIG. 6 is a perspective view of FIG. 4 as seen from diagonally above on the right. [Figure 7] FIG. 7 is a diagram equivalent to FIG. 4, but omitting the sub-battery, BPS, and PCM. [Figure 8] FIG. 8 is a diagram equivalent to FIG. 4 showing the wiring of the harness. [Figure 9] FIG. 9 is a diagram equivalent to FIG. 5 showing the wiring of the harness. [Figure 10] FIG. 10 is a diagram equivalent to FIG. 6 showing the wiring of the harness. [Figure 11] FIG. 11 is a top view of the corner portion without the floor mat. [Figure 12] FIG. 12 is a perspective view of FIG. 11 as seen from behind. [Figure 13] FIG. 13 is a perspective view of FIG. 11 as seen from diagonally above on the right. DETAILED DESCRIPTION OF THE INVENTION

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its applications, or its uses.

[0022] <Undercarriage in front of the passenger seat> FIG. 1 shows the front of the passenger seat of a vehicle. A floor panel 2 that forms a floor surface that extends substantially horizontally is provided in the lower portion (lower side in FIG. 1) of a passenger compartment 1 of the vehicle. A tunnel section 21 that is recessed upward (upper side in FIG. 1) and extends in the front-rear direction is provided in the center (left side in FIG. 1) of the floor panel 2 in the vehicle width direction so as to extend in the front-rear direction. A propeller shaft 22 extending in the front-rear direction is provided in this tunnel section 21. A side sill 23 that extends in the front-rear direction is provided on the outer side (right side in FIG. 1) of the floor panel 2 in the vehicle width direction. The side sill 23 is formed by welding a side sill inner panel with a hat-shaped cross section that opens outward in the vehicle width direction and a side sill outer panel with a hat-shaped cross section that opens inward in the vehicle width direction, with a side sill reinforcement sandwiched between them, at flanges provided above and below each panel.

[0023] As shown in Fig. 1, an instrument panel 3 extending in the vehicle width direction is provided in front of the passenger seat. A glove box 31 for the passenger seat is attached to this instrument panel 3. The space below this glove box 31 is the space for the passenger's feet. A floor mat 24 is provided in this space for the passenger's feet.

[0024] The structure in front of the passenger's feet is shown in Figures 2 and 3. As shown in Figures 2 and 3, the passenger compartment 1 is separated from the engine compartment 11 by a dash panel vertical wall portion 4. A dash insulator 41 is provided between the dash panel vertical wall portion 4 and the instrument panel 3 to prevent noise generated in the engine compartment 11, etc. from being transmitted to the instrument panel 3. The dash insulator 41 is made of, for example, felt or nonwoven fabric.

[0025] A dash reinforcement 42 having a hat-shaped cross section and an opening on the dash panel vertical wall 4 side is provided on the vehicle front side (right side in the drawing) of the dash panel vertical wall 4. The dash reinforcement 42 is provided so as to extend in the vehicle width direction.

[0026] As shown in Figures 2 and 3, the lower end of the dash panel vertical wall portion 4 and the front end of the floor panel 2 are connected by a corner panel that forms a curved corner portion 5 that extends in the vehicle width direction. A floor reinforcement 51 is provided on the upper surface of the corner portion 5, curving along the corner portion and extending in the front-to-rear direction. The floor reinforcement 51 has a hat-shaped cross section with an opening downward, and is provided so as to slope inward in the vehicle width direction from the rear to the front, as shown in Figures 4 to 6. The front end of the floor reinforcement 51 is connected to the dash panel vertical wall portion 4.

[0027] <Vehicle battery unit arrangement structure> A large-capacity main battery (not shown) is disposed in the engine compartment 11 of the vehicle according to this embodiment. In addition to this main battery, a relatively small-capacity sub-battery 60 is disposed in the corner portion 5, as shown in FIGS. 2 to 6. Also, in the corner portion 5, a powertrain control module 70 (hereinafter referred to as PCM 70) and a battery power supply 71 (hereinafter referred to as BPS 71) are disposed adjacent to the battery unit 6 on the inner side in the vehicle width direction, as shown in FIGS. 2 and 3. The sub-battery 60, PCM 70, and BPS 71 are covered from above by a cover member 8.

[0028] In this way, the sub-battery 60, PCM 70, and BPS 71 are efficiently arranged together by utilizing the wide space in the corner section 5 in the vehicle width direction. This allows the electrical connections to the sub-battery 60, PCM 70, and BPS 71 to be made compact.

[0029] <Battery unit structure> 2 and 3, the battery unit 6 is a unit for a sub-battery 60. The battery unit 6 includes the sub-battery 60, a battery mounting bracket 61 on which the sub-battery 60 is placed, and a battery clamp 62 for holding the sub-battery 60 to the battery mounting bracket 61.

[0030] The sub-battery 60 is a rectangular box-shaped component whose vertical and longitudinal dimensions are longer than its width. A harness connection part 601 is provided on the top surface of the sub-battery 60, as shown in FIG. 4 and other figures.

[0031] As shown in Figures 2, 3, and 7, the battery mounting bracket 61 has a mounting surface 611 on which the sub-battery 60 is placed. The mounting surface 611 is disposed along the floor reinforcement 51. A rear portion 612 extending rearward along the floor reinforcement 51 is provided at the rear of the mounting surface 611. A floor reinforcement fixing portion 613 that is recessed downward is provided on each of the mounting surface 611 and the rear portion 612. Each floor reinforcement fixing portion 613 is fastened to the floor reinforcement 51 with a mounting bolt. A cover member fixing portion 614 for fixing the cover member 8 is provided adjacent to the floor reinforcement fixing portion 613 provided on the rear portion 612. The cover member fixing portion 614 is formed in an upwardly convex shape.

[0032] As shown in Figures 4 to 7, the outer sides of the mounting surface 611 and the rear portion 612 in the vehicle width direction are bent downward, and at their lower ends are provided bracket outer portions 615 that extend outward in the vehicle width direction along the corner portions 5. Fixing portions 616 that are recessed downward are provided on the front and rear sides of the bracket outer portion 615. Each of these fixing portions 616 is fastened to the corner portions 5 with a mounting bolt. A cover member fixing portion 614 for fixing the cover member 8 is provided adjacent to the rear side of the front fixing portion 616 provided on the bracket outer portion 615. The cover member fixing portion 614 is formed in an upwardly convex shape.

[0033] 2 and 3, a front rising portion 617 is provided at the front end of the mounting surface 611. A front fastening portion 6171 extending toward the front of the vehicle is provided at the upper end of the front rising portion 617.

[0034] 4 to 7, an inner upright portion 618 is provided at the inner end in the vehicle width direction of the mounting surface 611 and the rear portion 612. An upper fastening portion 6181 extending inward in the vehicle width direction is provided at the upper end of this inner upright portion 618.

[0035] 2 to 6, a battery clamp 62 is hung from above on the sub-battery 60 placed on the mounting surface 611 of the battery mounting bracket 61. The battery clamp 62 has a contact portion 621 that contacts the upper surface of the sub-battery 60, and a bent portion 622 that is bent downward from the rear end of the contact portion 621. The lower end of this bent portion 622 is bent toward the rear of the vehicle.

[0036] The front end of the abutting portion 621 of the battery clamp 62 extends above the front rising portion 617 of the battery mounting bracket 61 and is fastened to the front fastening portion 6171 of the front rising portion 617 with a mounting bolt. In addition, the lower end of the bent portion 622 of the battery clamp 62 is fastened to the rear portion 612 of the battery mounting bracket 61 with a mounting bolt. In this way, by fastening the front and rear ends of the battery clamp 62 to the battery mounting bracket 61, the sub-battery 60 is supported on the battery mounting bracket 61.

[0037] The sub-battery 60 supported as described above is attached to the corner portion 5 via a battery mounting bracket 61. By utilizing the curved shape of the corner portion 5, the sub-battery 60 is attached at an angle that slopes downward toward the rear of the vehicle, with the rear end of its upper surface positioned lower than the front end. This allows the sub-battery 60 to be positioned closer to the dash panel vertical wall portion 4. By positioning the sub-battery 60 in this way, it is possible to increase the space under the passenger's feet.

[0038] Furthermore, as shown in FIGS. 2 and 3, since the upper surface of the sub-battery 60 slopes downward toward the rear of the vehicle, even when the sub-battery 60 is arranged close to the dash panel vertical wall portion 4, a gap can be provided between the upper portion of the sub-battery 60 and the dash panel vertical wall portion 4. Therefore, when the dash panel vertical wall portion 4 is moved rearward (left side in the figure) due to the impact during a vehicle collision (front collision), it is possible to prevent the dash panel vertical wall portion 4 from contacting the sub-battery 60. Thereby, the influence on the sub-battery 60 during a vehicle front collision can be mitigated.

[0039] <Structure of PCM and BPS> As shown in FIGS. 4 to 6, inside the vehicle width direction of the sub-battery 60 in the corner portion 5, the PCM 70 and the BPS 71 as in-vehicle devices are arranged. The PCM 70 and the BPS 71 are attached to the corner portion 5 via an in-vehicle device bracket 72 in a state of being stacked vertically.

[0040] Each of the PCM 70 and the BPS 71 is a rectangular box-shaped component whose longitudinal and lateral dimensions are longer than the thickness dimension. The PCM 70 has a longitudinal dimension that is longer than the vehicle width dimension. The BPS 71 is substantially square when viewed from the vertical direction.

[0041] Although not shown in the figure, the PCM 70 is composed of a microprocessor having a CPU, a memory, a counter timer group, an interface, and a path connecting these. The PCM 70 is a device for controlling the operation of the vehicle, such as controlling the driving of an engine or a motor. A PCM-side connection portion 701 for connecting a harness is provided outside the vehicle width direction of the PCM 70. Also, PCM fixing portions 702 for fixing the PCM 70 are provided on the front side and the rear side of the PCM 70, respectively.

[0042] Although not shown, the BPS 71 includes a step-up DC / DC converter, multiple relay circuits, and the like. The BPS 71 switches the relay circuit to enable power to be supplied from the sub-battery 60 when the main battery in the engine compartment 11 fails. The BPS 71 also monitors the status of the sub-battery 60. As a result, when the sub-battery 60 needs to be charged, the BPS 71 switches the relay circuit to charge the sub-battery 60. A BPS-side connection portion 711 for connecting a harness is provided on the rear side of the BPS 71. Furthermore, BPS fixing portions 712 for fixing the BPS 71 are provided on both sides of the BPS 71 in the vehicle width direction.

[0043] As shown in Fig. 7, the in-vehicle equipment bracket 72 is made up of a first bracket 721, a second bracket 722, and a third bracket 723. The first bracket 721 is disposed so as to incline outward in the vehicle width direction from the rear (lower side in Fig. 7) to the front (upper side in Fig. 7). The first bracket 721 has first bracket fixing portions 7211 on the inner side in the vehicle width direction (left side in Fig. 7) and the outer side in the vehicle width direction (right side in Fig. 7). The first bracket fixing portion 7211 on the inner side in the vehicle width direction is fastened to the corner portion 5 with a mounting bolt. The first bracket fixing portion 7211 on the outer side in the vehicle width direction is fastened to the floor reinforcement 51 with a mounting bolt.

[0044] The second bracket 722 is a generally C-shaped member with an opening on the outer side in the vehicle width direction when viewed from the top and bottom. The second bracket 722 has second bracket fixing portions 7221 in three locations: the front end, the inner side in the vehicle width direction, and the outer side in the vehicle width direction. The second bracket fixing portion 7221 at the front end is fastened to the first bracket 721 with a mounting bolt. The second bracket fixing portions 7221 on the inner side and outer side in the vehicle width direction are fastened to the corner portions 5 with mounting bolts.

[0045] The third bracket has a horizontally extending BPS mounting surface 7232. The inner side of this BPS mounting surface 7232 in the vehicle width direction is bent downward toward the inner side of the vehicle width direction, and a third bracket fixing portion 7231 extending toward the inner side of the vehicle width direction is provided at its lower end. The outer side of the BPS mounting surface 7232 in the vehicle width direction is bent downward toward the front of the vehicle, and a third bracket fixing portion 7231 extending forward is provided at its lower end. The third bracket fixing portion 7231 on the inner side of the vehicle width direction is fastened to the second bracket 722 with a mounting bolt. The third bracket 723 on the outer side of the vehicle width direction overlaps the first bracket fixing portion 7211 of the first bracket 721, and is fastened to floor reinforcement 51 together with first bracket fixing portion 7211 with a mounting bolt.

[0046] As shown in FIGS. 4 to 6 , the PCM 70 is disposed between the second bracket 722 and the third bracket 723. The PCM 70 is fixed by fastening the PCM fixing portion 702 to the second bracket 722 with a mounting bolt. In addition, the BPS 71 is placed on the BPS mounting surface 7232 of the third bracket 723. The BPS 71 is fixed by fastening the BPS fixing portion 712 to the third bracket 723 with a mounting bolt. In this way, the PCM 70 and the BPS 71 are attached to the corner portion 5 in a vertically stacked state.

[0047] <Harness connection> The wiring of the harnesses connected to the sub-battery 60, the PCM 70, and the BPS 71 will be described with reference to FIGS.

[0048] A main harness 90 extending in the vehicle width direction is disposed in front of the sub-battery 60. A plurality of harnesses are inserted inside the main harness 90. A power supply line connected to the main battery is also provided within the main harness 90. An intermediate branching portion 901 is provided approximately in the middle of the main harness 90 to branch and route the harnesses. The outer side of the main harness 90 in the vehicle width direction is connected to the main battery, although this is not shown.

[0049] The battery-side harness 91 connected to the harness connection portion 601 of the sub-battery 60 passes through the mounting surface 611 of the battery mounting bracket 61 and merges with the intermediate branch portion 901 of the main harness 90. This battery-side harness 91 is fixed to the mounting surface 611 by a harness fixing member.

[0050] A BPS side harness 92 is connected to the BPS side connection portion 711 of the BPS 71. The BPS side harness 92 passes through the inner side of the inner rising portion 618 of the battery mounting bracket 61 in the vehicle width direction, and merges with the main harness 90 from the end of the main harness 90 on the inner side in the vehicle width direction. This BPS side harness 92 is fixed to the inner rising portion 618 by a harness fixing member. The battery side harness 91 and BPS side harness 92 are electrically connected via the main harness 90. This allows power to be supplied from the sub-battery 60 to the BPS 71.

[0051] The PCM-side harness 93, connected to the PCM-side connection portion 701 of the PCM 70, is provided so as to extend rearward of the PCM 70 and inward in the vehicle width direction. The PCM-side harness 93 has a PCM-side branch harness 931 that branches off midway. The PCM-side branch harness 931 passes through the mounting surface 611 of the battery mounting bracket 61 and merges with the intermediate branch portion 901 of the main harness 90. The PCM-side branch harness 931, together with the battery-side harness 91, is fixed to the mounting surface 611 by a harness fixing member. The PCM-side branch harness 931 and the BPS-side harness 92 are electrically connected via the main harness 90. Therefore, by switching the relay circuit of the BPS 71, power can be supplied from the sub-battery 60 to the PCM 70 via the BPS 71.

[0052] <Cover material> 2, 3, and 11 to 13, the sub-battery 60, PCM 70, and BPS 71 are covered from above by a cover member 8. As shown in FIGS. 2 and 3, this cover member 8 is inclined downward toward the rear of the vehicle so that the rear end (left side in the figures) of its upper surface is lower than the front end (right side in the figures). The upper surface of the cover member 8 has an upper surface front portion 81 on the front side and an upper surface rear portion 82 on the rear side that is positioned lower than the upper surface front portion 81.

[0053] 11 to 13, an inner cover fastening portion 83 extending inward in the vehicle width direction is provided at the inner end in the vehicle width direction of the upper surface front portion 81 of the cover member 8. This inner cover fastening portion 83 is fastened with a mounting bolt to a cover member fixing base 211 fixed to the tunnel section 21. A substantially central portion of the upper surface front portion 81 of the cover member 8 is fastened with a mounting bolt to an upper fastening portion 6181 provided on the inner rising portion 618 of the battery mounting bracket 61. A cover outer fastening portion 84 extending downward is provided on the outer side in the vehicle width direction of the upper surface front portion 81 of the cover member 8. A lower end of this cover outer fastening portion 84 is fastened with a mounting bolt to a cover member fixing portion 614 provided on the bracket outer portion 615.

[0054] Rear cover member fastening portions 85 are bent downward and provided at three locations spaced apart in the vehicle width direction at the rear end of the upper surface rear portion 82 of the cover member 8. Of these rear cover member fastening portions 85, those provided on the inner side and in the center in the vehicle width direction are fastened to the corner portions 5 with mounting bolts. In addition, the rear cover member fastening portion 85 provided on the outer side in the vehicle width direction is fastened with a mounting bolt to a cover member fixing portion 614 provided on the rear portion 612 of the battery mounting bracket 61.

[0055] In order to fix the cover member 8, a cover member fixing portion 614 provided on the battery mounting bracket 61 is adjacent to a fixing portion 616 or a floor reinforcement fixing portion 613 for fixing the battery mounting bracket 61 to a corner portion or the floor reinforcement 51. This improves the support rigidity for the cover member 8.

[0056] 2 and 3, a floor mat 24 is provided on the upper surface of the cover member 8 along the slope of the cover member 8. Therefore, the passenger in the front passenger seat can use the floor mat 24 as a footrest. This ensures space for the passenger's feet and reduces the feeling of oppression felt by the passenger in the front passenger seat.

[0057] Furthermore, if the support rigidity of the cover member 8 is low, the passenger in the front passenger seat may feel uncomfortable when he or she places his or her feet on the floor mat 24 above the cover member 8. As described above, by improving the support rigidity of the cover member 8, the discomfort felt by the passenger in the front passenger seat can be reduced. [Explanation of symbols]

[0058] 1 Cabin 11 Engine Room 12 Storage space 2 Floor Panels 24 Floor mats 3. Instrument panel 4 Dash panel vertical wall 5 Corner section 6 Battery Unit 8 Cover member

Claims

1. a dash panel vertical wall portion that separates the vehicle interior from the engine compartment; a floor panel that forms a floor surface of the vehicle compartment; a curved corner portion connecting a lower end of the dash panel vertical wall portion and a front end of the floor panel, The battery unit is attached to the corner portion in front of the passenger seat with its upper surface inclined downward toward the rear of the vehicle so that its rear end is lower than its front end, The battery unit is covered from above by a cover member that slopes downward toward the rear of the vehicle so that its rear end is lower than its front end, the battery unit comprises a mounting bracket fixed to the corner portion, a battery placed on the mounting bracket, and a battery clamp hung from above on the battery and fastened to a fastening portion of the mounting bracket extending outward from the battery, The mounting bracket is provided with a cover member fixing portion for fixing an edge of the cover member, the mounting bracket has a mounting surface on which the battery is mounted, a front rising portion that rises from a front end of the mounting surface, and a front fastening portion that is provided at an upper end of the front rising portion, the battery clamp has a contact portion that contacts an upper surface of the battery and a bent portion that is bent downward from a rear end of the contact portion, a front end of the abutment portion extending above the front rising portion and fastened to the front fastening portion;

2. 2. The vehicle battery unit arrangement structure according to claim 1, A vehicle battery unit arrangement structure, characterized in that a gap is provided between the battery unit and the dash panel vertical wall portion.

3. 3. The vehicle battery unit arrangement structure according to claim 1, The vehicle battery unit mounting structure, wherein the cover member fixing portion is disposed adjacent to a fixing portion of the mounting bracket to the corner portion.

4. The vehicle battery unit arrangement structure according to any one of claims 1 to 3, an on-vehicle device to which power is supplied from the battery unit is provided adjacent to the battery unit in the vehicle width direction; The vehicle battery unit arrangement structure, wherein the battery unit and the on-board equipment are covered from above by the cover member.

5. The vehicle battery unit arrangement structure according to any one of claims 1 to 4, A main battery is disposed in the engine compartment, The battery unit is a sub-battery unit having a smaller capacity than the main battery.

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