Patent Description:
Patent document <NUM> describes that a storage space is provided below an instrument panel in front of the passenger seat of a vehicle and an in-vehicle battery and an in-vehicle device are disposed in this storage space. This in-vehicle battery is held by the battery tray and disposed in the storage space. This battery tray has a recess in which the lower end portion of the in-vehicle battery is held and a rear wall plate provided in the rear end portion of the recess. Accordingly, the storage space is separated from the legroom for the occupant of the passenger seat by this vertical wall portion.

<CIT> relates to a battery mounting device according to the preamble of claim <NUM>, which comprises a battery mounted in a cabin of a vehicle, a plate-shaped toe board provided in front of a passenger seat at a position located at a lower level than the passenger seat so as to cover the battery, wherein the battery is provided between the toe board and a floor panel of the vehicle.

<CIT> relates to a vehicle battery cooling device. In a cooling device of a vehicle including a battery, the vehicle has: a front passenger seat disposed in a vehicle cabin of the vehicle; a side sill which is disposed at the outer side as seen in a vehicle width direction of the front passenger seat so as to extend in an anteroposterior direction; a cooling mechanism which can conduct heat exchange between the battery and cooling air; and an exhaust duct which exhausts the cooling air after cooling from the cooling mechanism.

To obtain the legroom for the occupant of the passenger seat, the in-vehicle battery below the instrument panel is preferably disposed as forward as possible. However, when the in-vehicle battery is disposed on the floor panel as in patent document <NUM>, the legroom for the occupant of the passenger seat becomes narrower because the allowable position of the in-vehicle battery is limited, so there is concern that this occupant may have an oppressive feeling.

Accordingly, the present invention provides a structure in which the battery unit is disposed in front of the passenger seat and the legroom for the occupant of the passenger seat can be obtained.

This object is achieved by the invention as defined in claim <NUM>.

In the present invention, the battery unit is disposed so that the upper surface is inclined downward toward the vehicle rear using the curved shape of the corner portion. Therefore, as compared with the case in which the upper surface of the battery unit is disposed horizontally, the battery unit can be disposed closer to the dash panel vertical wall portion. Accordingly, the legroom for the occupant of the passenger seat can be enlarged. In addition, the top of the cover member, which is inclined downward toward the vehicle rear, can be used as the footrest for the occupant of the passenger seat. Accordingly, the interior comfort is improved and the oppressive feeling of the occupant sitting on the passenger seat can be reduced.

According to an embodiment, there is a clearance between the battery unit and the dash panel vertical wall portion.

In the embodiment, the dash panel vertical wall portion can be prevented from making contact with the battery unit when the dash panel vertical wall portion moves to the rear side, or rearward, due to a front collision of the vehicle. Accordingly, the impact on the battery unit due to a front collision of the vehicle can be mitigated.

Furthermore, since the battery unit is disposed so that the upper surface is inclined downward toward the vehicle rear using the curved shape of the corner portion, even when the battery unit is disposed closer to the front, a clearance can be obtained between the upper portion of the battery unit and the dash panel vertical wall portion.

According to the present invention, the battery unit includes a mounting bracket fixed to the corner portion, a battery placed on the mounting bracket, and a battery clamp that passes over the battery and is fastened to a fastening portion of the mounting bracket, the fastening portion extending to an outer side from the battery, and the mounting bracket has a cover member fixing portion that fixes an edge of the cover member.

In the present invention, the cover member can be fixed to the vehicle body side without extending the fixing edge of the cover member to the outer side of the mounting bracket, thereby advantageously making the cover member compact.

According to the present invention, the cover member fixing portion is disposed adjacent to a fixing portion through which the mounting bracket is fixed to the corner portion.

When the support rigidity for the cover member is low, the occupant may have an uncomfortable feeling when putting the legs on the top of the cover member. According to the present invention, the support rigidity for the cover member can be improved and the uncomfortable feeling of the occupant can be reduced.

According to an embodiment, an in-vehicle device to which electric power is supplied from the battery unit is provided adjacent in a vehicle width direction to the battery unit, and the battery unit and the in-vehicle device are covered with the cover member from above.

In the embodiment, the battery unit and the in-vehicle device can be efficiently disposed together by using the space of the corner portion that is large in the vehicle width direction. In addition, the harness for supplying electric power to the in-vehicle device can be shortened, thereby making the electrical connection compact.

According to an embodiment, a main battery is disposed in the engine compartment, and the battery unit is a unit of a sub battery having a smaller capacity than the main battery. In other words, the capacity of the sub battery is smaller than the capacity of the main battery.

Since the battery unit is disposed on the corner portion so that the upper surface thereof is inclined toward the vehicle rear, the legroom for the occupant of the passenger seat can be obtained while the battery unit is disposed in front of the passenger seat.

An embodiment of the present invention will be described in detail below with reference to the drawings.

<FIG> illustrates the portion of a vehicle in front of the passenger seat. A floor panel <NUM> forming a floor surface that spreads substantially horizontally is provided in the lower portion (lower side in <FIG>) of a vehicle interior <NUM> of this vehicle. In the middle (left side in <FIG>) in the vehicle width direction of this floor panel <NUM>, a tunnel portion <NUM> recessed upward (upper side in <FIG>) may be provided so as to extend in the longitudinal direction. A propeller shaft <NUM> that extends in the longitudinal direction may be provided in the tunnel portion <NUM>. A side sill <NUM> that extends in the longitudinal direction may be provided on the outer side (right side in <FIG>) in the vehicle width direction of the floor panel <NUM>. This side sill <NUM> may be formed by welding a side sill inner panel with a hat-shaped cross section that opens to the outer side in the vehicle width direction and a side sill outer panel with a hat-shaped cross section that opens to the inner side in the vehicle width direction while sandwiching a side sill reinforcement between the flanges provided above and below the side sill inner panel and the side sill outer panel.

As illustrated in <FIG>, an instrument panel <NUM> that extends in the vehicle width direction is provided in front of the passenger seat. A glove box <NUM> for the passenger seat is assembled to this instrument panel <NUM>. The space below this glove box <NUM> is the legroom for the occupant of the passenger seat. A floor mat <NUM> may be provided in this legroom for the occupant.

The structure in front of the legroom for the occupant is illustrated in <FIG> and <FIG>. As illustrated in <FIG> and <FIG>, the vehicle interior (or the cabin) <NUM> is separated from an engine compartment <NUM> by a dash panel vertical wall portion <NUM>. A dash insulator <NUM> may be provided between this dash panel vertical wall portion <NUM> and the instrument panel <NUM> to prevent noise generated in the engine compartment <NUM> or the like from being transmitted to the instrument panel <NUM>. The dash insulator <NUM> is made of, for example, felt, non-woven fabric, or the like.

On the vehicle front side (the right side in the drawing) of the dash panel vertical wall portion <NUM>, a dash reinforcement <NUM> that has a hat-shaped cross section and opens toward the dash panel vertical wall portion <NUM> side may be provided. The dash reinforcement <NUM> may be provided so as to extend in the vehicle width direction.

As illustrated in <FIG> and <FIG>, the lower end of the dash panel vertical wall portion <NUM> and the front end of the floor panel <NUM> are connected to each other by a corner panel that forms a curved corner portion <NUM> that spreads in the vehicle width direction.

A floor reinforcement <NUM> that extends in the longitudinal direction while curving along this corner portion <NUM> may be provided on the upper surface of the corner portion <NUM>. The floor reinforcement <NUM> may be formed to have a hat-shaped cross section that opens downward and, as illustrated in <FIG>, provided so as to be inclined toward the inner side in the vehicle width direction from the rear to the front. In addition, the front end of the floor reinforcement <NUM> may be connected to the dash panel vertical wall portion <NUM>.

A main battery (not illustrated) with a large (or a larger) capacity may be disposed in the engine compartment <NUM> of the vehicle according to the embodiment. In addition to this main battery, a sub battery <NUM> with a relatively low (or a lower) capacity is disposed in the corner portion <NUM>, as illustrated in <FIG>. In addition, in the corner portion <NUM>, a powertrain control module <NUM> (referred to below as a Power-train Control Module (PCM) <NUM>) and a battery power supply <NUM> (referred to below as a BPS <NUM>) may be disposed adjacent to the inner side in the vehicle width direction of the battery unit <NUM>, as illustrated in <FIG>. The sub battery <NUM>, the PCM <NUM>, and/or the BPS <NUM> are covered from above with the cover member <NUM>, as illustrated in <FIG> and <FIG>.

As described above, the sub battery <NUM>, the PCM <NUM>, and the BPS <NUM> are efficiently disposed together using the space of the corner portion <NUM> that is large in the vehicle width direction. This can make the electric connections to the sub battery <NUM>, the PCM <NUM>, and the BPS <NUM> compact.

As illustrated in <FIG> and <FIG>, the battery unit <NUM> is the unit of the sub battery <NUM>. The battery unit <NUM> includes the sub battery <NUM>, a battery mounting bracket <NUM> on which the sub battery <NUM> is placed, and a battery clamp <NUM> that holds the sub battery <NUM> on the battery mounting bracket <NUM>.

The sub battery <NUM> may be a rectangular parallelepiped component having vertical and longitudinal dimensions larger than the dimension in the vehicle width direction. As illustrated in <FIG> and the like, a harness connection portion <NUM> may be provided on the upper surface of this sub battery <NUM>.

As illustrated in <FIG>, <FIG>, and <FIG>, the battery mounting bracket <NUM> particularly has a placement surface <NUM> on which the sub battery <NUM> is placed. The placement surface <NUM> may be disposed along the floor reinforcement <NUM>. In addition, a rear portion <NUM> that extends backward along the floor reinforcement <NUM> may be provided behind the placement surface <NUM>. Each of the placement surface <NUM> and the rear portion <NUM> particularly has a floor reinforcement fixing portion <NUM> recessed downward. The floor reinforcement fixing portions <NUM> are fastened to the floor reinforcement <NUM> with mounting bolts. Particularly, a cover member fixing portion <NUM> that fixes the cover member <NUM> is provided adjacent to the floor reinforcement fixing portion <NUM> provided in the rear portion <NUM>. The cover member fixing portion <NUM> may be formed to project upward.

As illustrated in <FIG>, the outer sides in the vehicle width direction of the placement surface <NUM> and the rear portion <NUM> may be bent downward, and the lower ends thereof may be provided with a bracket outer portion <NUM> that extends to the outer side in the vehicle width direction along the corner portion <NUM>.

The front side and the rear side of the bracket outer side portion <NUM> may be provided with fixing portions <NUM> recessed downward. These fixing portions <NUM> may be fastened to the corner portions <NUM> with mounting bolts.

The cover member fixing portion <NUM> that fixes the cover member <NUM> may be provided adjacent to the rear side of the fixing portion <NUM> on the front side provided in the bracket outer side portion <NUM>. The cover member fixing portion <NUM> is formed to project upward.

As illustrated in <FIG> and <FIG>, a front rise portion <NUM> that rises may be provided in the front end portion of the placement surface <NUM>.

A front fastening portion <NUM> that extends to the vehicle front may be provided at the upper end of this front rise portion <NUM>.

As illustrated in <FIG>, an inner rise portion <NUM> that rises may be provided in the end portions on the inner side in the vehicle width direction of the placement surface <NUM> and the rear portion <NUM>.

An upper fastening portion <NUM> that extends to the inner side in the vehicle width direction may be provided at the upper end of this inner rise portion <NUM>.

As illustrated in <FIG>, the battery clamp <NUM> particularly passes over the sub battery <NUM> placed on the placement surface <NUM> of the battery mounting bracket <NUM>. The battery clamp <NUM> particularly includes a contact portion <NUM> in contact with the upper surface of the sub battery <NUM> and a bent portion <NUM> bent downward from the rear end of the contact portion <NUM>. The lower end of this bent portion <NUM> may be bent toward the vehicle rear.

Particularly, the front end of the contact portion <NUM> of the battery clamp <NUM> extends to a portion above the front rise portion <NUM> of the battery mounting bracket <NUM> and is fastened to a front fastening portion <NUM> of the front rise portion <NUM> with a mounting bolt.

Further particularly, the lower end of the bent portion <NUM> of the battery clamp <NUM> is fastened to the rear portion <NUM> of the battery mounting bracket <NUM> with a mounting bolt.

As described above, the sub battery <NUM> may be supported by the battery mounting bracket <NUM> by fastening the front end and the rear end of the battery clamp <NUM> to the battery mounting bracket <NUM>.

The sub battery <NUM> supported as described above is mounted to the corner portion <NUM> via the battery mounting bracket <NUM>. The sub battery <NUM> is mounted so as to be inclined downward toward the vehicle rear with the rear end of the upper surface thereof located below the front end of the upper surface thereof by using the curved shape of the corner portion <NUM>. Therefore, the sub battery <NUM> can be disposed closer to the dash panel vertical wall portion <NUM>. The legroom for the occupant of the passenger seat can be larger by disposing the sub battery <NUM> as described above.

Furthermore, as illustrated in <FIG> and <FIG>, since the upper surface of the sub battery <NUM> is inclined downward toward the vehicle rear, even when the sub battery <NUM> is disposed close to the dash panel vertical wall portion <NUM>, a clearance can be obtained between the top of the sub battery <NUM> and the dash panel vertical wall portion <NUM>. Accordingly, the dash panel vertical wall portion <NUM> can be prevented from making contact with the sub battery <NUM> when the dash panel vertical wall portion <NUM> moves to the rear side (left side in the drawing) due to the impact during a vehicle collision (front collision). This can mitigate the effects on the sub battery <NUM> at the time of a vehicle front collision.

As illustrated in <FIG>, the PCM <NUM> and the BPS <NUM> as in-vehicle devices may be disposed on the inner side in the vehicle width direction of the sub battery <NUM> in the corner portion <NUM>. In other words, the PCM <NUM> and the BPS <NUM> may be disposed between the center of the vehicle in the vehicle width direction and the sub battery <NUM> in the corner portion <NUM>. The PCM <NUM> and the BPS <NUM> are mounted in the corner portion <NUM> via an in-vehicle device bracket <NUM> with the BPS <NUM> and the PCM <NUM> vertically overlapping with each other.

Each of the PCM <NUM> and BPS <NUM> may be a rectangular parallelepiped component having vertical and horizontal dimensions larger than the thickness. In the PCM <NUM>, the dimension in the longitudinal direction is larger than the dimension in the vehicle width direction. The BPS <NUM> has a substantially square shape as seen in the vertical direction.

Although not illustrated, the PCM <NUM> may be configured by a microprocessor including a CPU, a memory, a counter timer group, an interface, and a path connecting them to each other. The PCM <NUM> is a device for controlling the operation of a vehicle, such as controlling the drive of an engine or a motor. A PCM side connection portion <NUM> for connecting the harness may be provided on the outer side in the vehicle width direction of the PCM <NUM>. In addition, a PCM fixing portion <NUM> for fixing the PCM <NUM> may be provided on each of the front and rear sides of the PCM <NUM>.

Although not illustrated, the BPS <NUM> may have at least one of a step-up DC/DC converter, a plurality of relay circuits, and the like. The BPS <NUM> may enable the supply of electric power from the sub battery <NUM> by switching between relay circuits when the main battery in the engine compartment <NUM> fails. In addition, the BPS <NUM> may monitor the state of the sub battery <NUM>. Therefore, when the sub battery <NUM> needs to be charged, the BPS <NUM> switches between relay circuits so as to charge the sub battery <NUM>. A BPS side connection portion <NUM> for connecting the harness may be provided behind the BPS <NUM>. In addition, BPS fixing portions <NUM> for fixing the BPS <NUM> may be provided on both sides in the vehicle width direction of the BPS <NUM>.

As illustrated in <FIG>, the in-vehicle device bracket <NUM> may include one or more brackets, particularly a first bracket <NUM>, a second bracket <NUM>, and a third bracket <NUM>.

The first bracket <NUM> is disposed so as to be inclined toward the outer side in the vehicle width direction from the rear (lower side in <FIG>) to the front (upper side in <FIG>). This first bracket <NUM> has a first bracket fixing portion <NUM> on each of the inner side (left side in <FIG>) in the vehicle width direction and on the outer side (right side in <FIG>) in the vehicle width direction. The first bracket fixing portion <NUM> on the inner side in the vehicle width direction is fastened to the corner portion <NUM> with a mounting bolt. The first bracket fixing portion <NUM> on the outer side in the vehicle width direction is fastened to the floor reinforcement <NUM> with a mounting bolt.

The second bracket <NUM> is a substantially C-shaped member that opens to the outer side in the vehicle width direction as seen in the vertical direction. The second bracket <NUM> includes a second bracket fixing portion <NUM> in each of the front end portion, the end portion on the inner side in the vehicle width direction, and the end portion on the outer side in the vehicle width direction. The second bracket fixing portion <NUM> in the front end portion is fastened to the first bracket <NUM> with a mounting bolt. The second bracket fixing portions <NUM> on the inner side in the vehicle width direction and on the outer side in the vehicle width direction are fastened to the corner portion <NUM> with a mounting bolts.

The third bracket has a BPS placement surface <NUM> that spreads horizontally. The inner side in the vehicle width direction of this BPS placement surface <NUM> is bent downward toward the inner side in the vehicle width direction and the lower end thereof is provided with a third bracket fixing portion <NUM> that extends to the inner side in the vehicle width direction. In addition, the outer side in the vehicle width direction is bent toward the lower front of the vehicle and the lower end thereof is provided with the third bracket fixing portion <NUM> that extends forward. The third bracket fixing portion <NUM> on the inner side in the vehicle width direction is fastened to the second bracket <NUM> with a mounting bolt. In addition, the third bracket <NUM> on the outer side in the vehicle width direction overlaps with the first bracket fixing portion <NUM> of the first bracket <NUM> and is fastened to the floor reinforcement <NUM> together with the first bracket fixing portion <NUM> with a mounting bolt.

As illustrated in <FIG>, the PCM <NUM> may be disposed between the second bracket <NUM> and the third bracket <NUM>. The PCM <NUM> may be fixed by fastening the PCM fixing portion <NUM> to the second bracket <NUM> with a mounting bolt. In addition, the BPS <NUM> may be placed on the BPS placement surface <NUM> of the third bracket <NUM>. The BPS <NUM> may be fixed by fastening the BPS fixing portion <NUM> to the third bracket <NUM> with a mounting bolt.

As described above, the PCM <NUM> and BPS <NUM> are mounted to the corner portion <NUM> with the PCM <NUM> and BPS <NUM> vertically overlapping with each other.

The wiring of harnesses connected to the sub battery <NUM>, the PCM <NUM>, and the BPS <NUM> will be described with reference to <FIG>.

A core harness <NUM> that extends in the vehicle width direction may be disposed in front of the sub battery <NUM>. One or a plurality of harnesses are inserted into this core harness <NUM>. A power supply line connected to the main battery may also be provided in the core harness <NUM>. An intermediate branching portion <NUM> for branching and routing the harness is provided approximately in the middle of the core harness <NUM>. Although not illustrated, the outer side in the vehicle width direction of the core harness <NUM> is connected to the main battery.

Particularly, the battery side harness <NUM> connected to the harness connection portion <NUM> of the sub battery <NUM> merges into the intermediate branching portion <NUM> of the core harness <NUM> through the placement surface <NUM> of the battery mounting bracket <NUM>. This battery side harness <NUM> may be fixed to the placement surface <NUM> by the harness fixing member.

A BPS side harness <NUM> may be connected to the BPS side connection portion <NUM> of the BPS <NUM>. Particularly, the BPS side harness <NUM> merges into the core harness <NUM> from the end portion on the inner side in the vehicle width direction of the core harness <NUM> through the inner side in the vehicle width direction of the inner rise portion <NUM> of the battery mounting bracket <NUM>. This BPS side harness <NUM> may be fixed to the inner rise portion <NUM> by the harness fixing member. The battery side harness <NUM> and the BPS side harness <NUM> are electrically connected to each other via the core harness <NUM>. Accordingly, electric power can be supplied from the sub battery <NUM> to the BPS <NUM>.

The PCM side harness <NUM> connected to the PCM side connection portion <NUM> of the PCM <NUM> may be provided so as to extend to the inner side, or inward, in the vehicle width direction through the rear of the PCM <NUM>.

This PCM side harness <NUM> particularly has a PCM side branching harness <NUM> that branches halfway. The PCM side branching harness <NUM> may merge into the intermediate branching portion <NUM> of the core harness <NUM> through the placement surface <NUM> of the battery mounting bracket <NUM>. This PCM side branching harness <NUM> may be fixed to the placement surface <NUM> by the harness fixing member together with the battery side harness <NUM> described above.

This PCM side branching harness <NUM> and the BPS side harness <NUM> may be electrically connected to each other via the core harness <NUM>. Accordingly, electric power can be supplied from the sub battery <NUM> to the PCM <NUM> via the BPS <NUM> by switching between relay circuits of the BPS <NUM>.

As illustrated in <FIG> and <FIG> and <FIG>, the sub battery <NUM>, the PCM <NUM>, and/or the BPS <NUM> described above are covered with the cover member <NUM> from above. As illustrated in <FIG> and <FIG>, this cover member <NUM> is inclined downward toward the vehicle rear so that the rear end (left side in the drawing) of the upper surface thereof is lower than the front end (right side in the figure) of the upper surface thereof. The upper surface of the cover member <NUM> includes an upper surface front portion <NUM> on the front side and an upper surface rear portion <NUM> on the rear side, which is located below an upper surface front portion <NUM>.

As illustrated in <FIG>, an inner cover fastening portion <NUM> that extends to the inner side in the vehicle width direction may be provided in the inner end portion in the vehicle width direction of the upper surface front portion <NUM> of the cover member <NUM>.

This inner cover fastening portion <NUM> may be fastened with a mounting bolt to a cover member fixing base <NUM> fixed to the tunnel portion <NUM>. The approximately central portion of the upper surface front portion <NUM> of the cover member <NUM> may be fastened with a mounting bolt to the upper fastening portion <NUM> provided in the inner rise portion <NUM> of the battery mounting bracket <NUM>.

A cover outer side fastening portion <NUM> that extends downward may be provided on the outer side in the vehicle width direction of the upper surface front portion <NUM> of the cover member <NUM>.

The lower end of this cover outer side fastening portion <NUM> may be fastened with a mounting bolt to the cover member fixing portion <NUM> provided in the bracket outer side portion <NUM>.

At the rear end of the upper surface rear portion <NUM> of the cover member <NUM>, rear side cover member fastening portions <NUM> bent downward may be provided at three locations at intervals in the vehicle width direction. Of these rear side cover fastening portions <NUM>, those provided on the inner side and in the middle in the vehicle width direction may be fastened to the corner portion <NUM> with mounting bolts. In addition, the rear side cover member fastening portion <NUM> provided on the outer side in the vehicle width direction may be fastened with a mounting bolt to the cover member fixing portion <NUM> provided in the rear portion <NUM> of the battery mounting bracket <NUM>.

The cover member fixing portion <NUM> provided in the battery mounting bracket <NUM> to fix this cover member <NUM> may be adjacent to the fixing portion <NUM> for fixing the battery mounting bracket <NUM> to the corner portion or the floor reinforcement <NUM> or the floor reinforcement fixing portion <NUM>. This improves the support rigidity for the cover member <NUM>.

As illustrated in <FIG> and <FIG>, the floor mat <NUM> may be provided along the inclination of the cover member <NUM> on the upper surface of this cover member <NUM>. Accordingly, the occupant of the passenger seat can use the floor mat <NUM> as a foothold. Accordingly, it is possible to obtain the legroom for the occupant of the passenger seat and reduce the oppressive feeling of the occupant sitting on the passenger seat.

Claim 1:
A battery unit arrangement structure for a vehicle, comprising:
a dash panel vertical wall portion (<NUM>) configured to separate a vehicle interior (<NUM>) from an engine compartment (<NUM>) ;
a floor panel (<NUM>) configured to form a floor surface of the vehicle interior (<NUM>);
a curved corner portion (<NUM>) configured to connect a lower end of the dash panel vertical wall portion (<NUM>) and a front end of the floor panel (<NUM>) to each other;
a battery unit (<NUM>), wherein the battery unit (<NUM>) is mounted on the corner portion (<NUM>) in front of a passenger seat with an upper surface of the battery unit (<NUM>) inclined downward toward a vehicle rear so that a rear end of the battery unit (<NUM>) is lower than a front end of the battery unit (<NUM>); and
a cover member (<NUM>), wherein the battery unit (<NUM>) is covered, from above, with the cover member (<NUM>), and the cover member (<NUM>) is inclined downward toward the vehicle rear so that a rear end of the cover member (<NUM>) is lower than a front end of the cover member (<NUM>),
characterized in that
the battery unit (<NUM>) includes a mounting bracket (<NUM>) fixed to the corner portion (<NUM>), a battery (<NUM>) placed on the mounting bracket (<NUM>), and a battery clamp (<NUM>) that passes over the battery (<NUM>) and is fastened to a fastening portion (<NUM>) of the mounting bracket (<NUM>), the fastening portion (<NUM>) extending to an outer side from the battery (<NUM>),
wherein the mounting bracket (<NUM>) has a cover member fixing portion (<NUM>) configured to fix an edge of the cover member (<NUM>), and
wherein the cover member fixing portion (<NUM>) is disposed adjacent to a fixing portion (<NUM>) through which the mounting bracket (<NUM>) is fixed to the corner portion (<NUM>) .