CN107848388B - Electric vehicle - Google Patents

Abstract

The invention provides an electric vehicle which can effectively reduce friction between a power storage device and a sliding surface and can easily finish the loading and unloading operation of the power storage device. An electric vehicle (10) is provided with: an electrical storage device (20a) that supplies power to a load; and an electrical storage device housing unit (22a) that is provided on the vehicle side, wherein the electrical storage device (20a) is detachable from the electrical storage device housing unit (22 a). The power storage device housing unit (22a) has a slide member (52), and the slide member (52) slides the power storage device (20a) in a state of being inclined in the horizontal direction to a larger extent than the vertical direction when the power storage device is attached and detached, and a linear protrusion (54) extending in the sliding direction is provided on the slide member (52), and the linear protrusion (54) forms a sliding surface (54s) that contacts the power storage device (20 a).

Description

electric vehicle

technical field

The present invention relates to an electric vehicle including a power storage device that supplies electric power to a load, and a power storage device housing portion provided on the vehicle side, the power storage device being detachable from the power storage device housing portion.

Background technique

In recent years, electric vehicles that are driven by electric power from a power storage device to travel have been employed. Electric vehicles include, in addition to so-called EVs (electric vehicles) in which a power source is a drive motor and at least an accumulator as a power source, HEVs (hybrid electric vehicles), PHEVs (plug-in hybrid vehicles), and FCVs (fuel vehicles) battery electric vehicles) etc.

In electric vehicles, in addition to the main battery for transient performance during normal driving and the cruising distance required by many people, for example, a sub-battery for extending the driving distance or supplying electric power in an emergency may be provided. The sub-battery is set to a predetermined number, and the sub-battery can be detached from the electric vehicle and charged at home or the like using an external charger.

As such a technique, for example, a vehicle battery storage device disclosed in Japanese Patent No. 3683307 is known. This vehicle battery storage device includes: an outer case that is longitudinally fixed to the vehicle side obliquely rearward so that the insertion opening faces diagonally upward; and an inner case that houses a battery. Furthermore, a connection mechanism for electrically connecting the battery side and the vehicle side is provided between the inner case and the bottom wall of the outer case when the inner case is inserted into the outer case.

SUMMARY OF THE INVENTION

However, the above-described vehicle battery storage device is actually applied to a power-assisted bicycle. Therefore, since the battery is a small battery whose capacity is relatively small, it can be easily slid and can be used with a thin rail or the like.

On the other hand, since the battery for an electric vehicle requires a larger capacity than that of an electric bicycle, the battery for the electric vehicle becomes large and heavy. Therefore, when the above-described vehicle battery storage device is applied to an electric vehicle, a load (self-weight) acts when the inner case containing the heavy battery is taken out from the outer case that is longitudinally fixed diagonally backwards. , there is a problem that the burden on the operator increases.

Furthermore, when the inner case and the outer case are in surface contact, it is difficult to slide the inner case when the load on the battery is large.

The present invention solves such a problem, and an object of the present invention is to provide an electric vehicle that can effectively reduce friction between a power storage device and a sliding surface, and that can easily complete the work of attaching and detaching the power storage device.

The present invention relates to an electric vehicle including: a power storage device that supplies electric power to a load; and a power storage device housing portion provided on the vehicle side, the power storage device being opposed to the power storage device housing portion Easy to load and unload. The power storage device accommodating portion has a sliding member that slides the power storage device in a state where the power storage device is tilted in the horizontal direction more than the vertical direction when attaching and detaching. Further, the sliding member is provided with a linear protrusion extending in the sliding direction, and the linear protrusion forms a sliding surface that contacts the power storage device.

Further, in the electric vehicle, it is preferable to include two or more protrusions extending in the sliding direction in contact with the power storage device.

In addition, in the electric vehicle, it is preferable that the protrusions are provided so as to be separated from the center line of the sliding member in at least one of left and right.

Furthermore, in this electric vehicle, it is preferable that a plurality of protrusions are provided in parallel on the sliding member, and the heights of the protrusions are set to be different from each other.

In addition, in the electric vehicle, it is preferable that the respective projections are provided intermittently at intervals in the sliding direction, and the projections arranged in parallel with each other are arranged so that at least a part of the projections have a width that intersects the sliding direction. The directions overlap.

In addition, in the electric vehicle, it is preferable that the power storage device housing portion includes a cover member that is opened when the power storage device is attached and detached, and the cover member is provided with an inclined portion that orients the sliding surface toward the position when opened. The charging direction of the power storage device is inclined downward by 10 ゜ to 20 ゜ from the horizontal direction.

According to the present invention, the power storage device can be slid along the sliding surface in a posture in which a load is applied in the horizontal direction. Therefore, it is not necessary to slide the power storage device, which is a heavy object, in the vertical direction (vertical direction), and the burden on the operator can be effectively reduced.

In addition, the sliding surface is provided as a linear protrusion extending in the sliding direction. Therefore, the power storage device can slide so as to be in line contact (or point contact) with the protruding portion, so that the frictional force can be reduced.

As a result, the friction between the power storage device and the sliding surface can be effectively reduced, and the work of attaching and detaching the power storage device can be easily and quickly completed.

Description of drawings

FIG. 1 is a schematic plan explanatory view of an electric vehicle according to a first embodiment of the present invention.

FIG. 2 is an explanatory front view of the electric vehicle when viewed from the rear.

FIG. 3 is an explanatory perspective view of a main part of a sub battery pack and a power storage device accommodating portion constituting the electric vehicle.

FIG. 4 is an explanatory perspective view of the storage unit of the electrical storage device.

5 is an explanatory side view of the power storage device housing portion.

6 is an explanatory perspective view showing the operation of the power storage device housing portion.

7 is an explanatory diagram of a main part of the power storage device housing portion.

8 is an explanatory perspective view of a main part of an electric vehicle according to a second embodiment of the present invention.

9 is an explanatory diagram of a main part constituting a power storage device housing portion of the electric vehicle.

10 is an explanatory perspective view of a main part of an electric vehicle according to a third embodiment of the present invention.

11 is an explanatory diagram of a main part constituting a power storage device housing portion of the electric vehicle.

Detailed ways

As shown in FIG. 1 , the electric vehicle 10 according to the first embodiment of the present invention is an EV, but is not limited to this. As will be described later, if it is a vehicle using a detachable sub battery pack (power storage device), it can be applied to various electric vehicles such as HEV, PHEV, and FCV.

A seat 16 serving as a driver's seat is provided at approximately the center of the body 12 of the electric vehicle 10 in the front-rear direction (vehicle length direction) (direction of arrow A), that is, approximately in the middle of the front wheels 14F and the rear wheels 14R. Under the seat of the seat 16 , that is, in the lower part of the floor, a relatively high-output and expensive main battery pack (power storage device) 18 with low internal resistance is arranged.

As shown in FIGS. 1 and 2 , between the rear wheels 14R, an inexpensive sub-battery group 20 having relatively high internal resistance is arranged in the vicinity of the upper side of the rear wheel 14R on the arrow B2 direction side. The sub-battery group 20 includes, for example, two sub-battery groups 20a and 20b.

The sub battery packs 20a, 20b and the main battery pack 18 are connected in parallel to each other via a converter, and are housed in power storage device housing portions 22a, 22b on the vehicle side. When charging the sub battery packs 20a and 20b, not only the on-board charger (not shown) but also the electric vehicle 10 can be detached and charged at home or the like with an external charger not shown.

As shown in FIG. 3 , the sub-battery pack 20a includes a battery body 24a and a lid 24b that are molded from a resin material, and the battery body 24a accommodates a control board (not shown) and a plurality of battery cells. The battery cell unit composed of the body. A connector 24c is provided at the end of the battery body 24a in the arrow Af direction (vehicle front), and a handle 24d is provided at the end of the battery body 24a in the arrow Ab direction (vehicle rear). The battery main body 24a and the lid body 24b are attached with the sealing member 24e interposed therebetween.

On the four side surfaces of the battery body 24a, inclined surfaces 24as are formed by the draft angle at the time of drafting, and on the other hand, the four side surfaces of the lid body 24b are inclined by the draft angle. face 24bs. The inclined surface 24as is inclined inward along the direction away from the end portion on the side of the sealing member 24e (the direction away from the lid body 24b). The inclined surface 24bs is inclined inward along the direction away from the end on the sealing member 24e side (the direction away from the battery main body 24a).

The sub-battery pack 20b is configured in the same manner as the sub-battery pack 20a described above, and its detailed description is omitted.

As shown in FIGS. 4 and 5 , the power storage device housing portion 22a includes a base portion 26 fixed to the vehicle frame 12f. The base portion 26 is fixed to the vehicle frame 12f via a fastener (for example, a fixing bolt) 28, and the housing 30 is tiltably supported on the base portion 26. As shown in FIG. A fulcrum pin 32 is inserted into the lower end hole 31a in the arrow Af direction of the bottom of the casing 30, and the end side of the casing 30 in the arrow Ab direction swings up and down with the fulcrum pin 32 as a fulcrum.

A cover member 34 that is opened when attaching and detaching the sub battery pack 20 a is provided at the end of the casing 30 in the direction of the arrow Ab. As shown in FIGS. 4 to 6 , the cover member 34 is swingably (rotatably) supported by the base portion 26 via a support rod 36 , and a link portion (inclined portion) 38 is provided at the lower end portion of the cover member 34 . . The link portion 38 is engaged with the lower end concave portion 31 b in the direction of the arrow Ab of the housing 30 via the link pin 40 .

When the cover member 34 closes the casing 30 (standing posture), the lower end recess 31b of the casing 30 moves downward so that the link pin 40 and the support rod 36 are in the same position, and the casing 30 is maintained in the horizontal posture. In the horizontal posture in which the lid member 34 is opened, the link pin 40 is moved upward by the link portion 38 to lift the end portion of the casing 30 in the direction of arrow Ab upward. The case 30 is arranged so as to be inclined downward by 10° to 20° from the horizontal direction toward the loading direction (direction of arrow Af) (see FIG. 5 ).

As shown in FIG. 6 , the cover member 34 is provided with a pair of guide rails 42a and 42b. One ends of the guide rails 42a and 42b are supported by the housing 30 via a support rod 44a, and the other ends of the guide rails 42a and 42b are supported by the support rod 44b. The guide rails 42a and 42b are formed of, for example, a resin material.

A lock lever 46 is provided on the upper portion of the cover member 34 , and a lock portion 48 operated by the lock lever 46 engages with a striker 50 provided at an upper end portion of the casing 30 in the direction of arrow Ab.

As shown in FIGS. 4 and 7 , the bottom surface of the casing 30 is provided with a sliding member 52 that accommodates the sub-battery pack 20 a in a nearly horizontal posture, and that allows the sub-battery pack 52 to be attached and detached. 20a slides in a state inclined to the horizontal direction more than the vertical direction. The sliding member 52 is provided with a linear protrusion 54 extending in the sliding direction (arrow A direction) of the sub battery pack 20a.

A sliding surface 54s that is in contact with the bottom surface of the battery main body 24a constituting the sub-battery pack 20a, that is, the inclined surface 24as is formed on the upper surface of the protruding portion 54 . The sliding surface 54s is separated from the center line SL of the sliding member 52 (the center position in the width direction of the battery main body 24a) in the direction of the arrow B1. The sliding surface 54s is separated from the sealing member 24e (see FIG. 7 ).

In a state where the sub battery pack 20a is placed on the sliding surface 54s, the center of gravity of the sub battery pack 20a is deviated in the arrow B2 direction, and the sub battery pack 20a is about to face the side wall (sliding member) 30a of the casing 30 in the arrow B2 direction side tilt. A linear protrusion 56 is provided on the side wall 30a, and the linear protrusion 56 is formed with a sliding surface 56s that is in contact with the lid body 24b constituting the secondary battery pack 20a. The protruding portion 56 extends in the sliding direction (arrow A direction) of the sub battery pack 20a (see FIG. 4 ). Preferably, the ends of the sliding surfaces 54s and 56s are bent or bent, and are in line contact or point contact with the secondary battery pack 20a. In addition, in the case where a convex protrusion or the like is provided on the sub battery pack 20a, the sliding surfaces 54s and 56s may be flat surfaces.

A connector 58 is provided at an end portion in the direction of the arrow Af inside the housing 30 . The connector 58 is electrically connected to the connector 24c of the sub battery pack 20a.

The power storage device housing portion 22b is configured in the same manner as the power storage device housing portion 22a described above, and the same components are assigned the same reference numerals and detailed descriptions thereof are omitted.

Next, the operation of replacing the sub battery pack 20a in the electric vehicle 10 configured in this way will be described. Note that the replacement operation of the sub battery pack 20b is the same as the replacement operation of the sub battery pack 20a, and the description thereof is omitted.

As shown in FIG. 4 , when the cover member 34 constituting the power storage device housing portion 22 a closes the case 30 , the case 30 is maintained in a nearly horizontal posture. Therefore, the sub battery pack 20a is accommodated in the casing 30 in a state in which the slide member 52 is held in a nearly horizontal posture.

Therefore, after the operator holds the lock lever 46 and releases the lock portion 48 , the operator swings the cover member 34 in the horizontal direction using the support lever 36 as a fulcrum. As shown in FIG. 5 , a link portion 38 is provided at the lower end portion of the cover member 34 . Therefore, the link portion 38 lifts the end portion of the casing 30 in the direction of the arrow Ab above via the link pin 40 . Thereby, the housing 30 is arranged so as to be inclined downward from the horizontal direction by 10° to 20° in the direction of the arrow Af.

Next, the operator grasps the handle 24d of the sub battery pack 20a, and pulls out the sub battery pack 20a in the direction of the arrow Ab. At this time, as shown in FIG. 7 , the bottom surface of the sub battery pack 20a is in contact with the sliding surface 54s, and the side surface of the sub battery pack 20a is in contact with the sliding surface 56s. Therefore, the sub battery pack 20a can be slid in the direction of the arrow Ab in line contact along the two sliding surfaces 54s and 56s.

After the sub battery pack 20a is delivered to the guide rails 42a and 42b from the sliding surfaces 54s and 56s, it slides in the direction of the arrow Ab along the guide rails 42a and 42b, and is taken out from the power storage device housing portion 22a.

The charged secondary battery pack 20a slides along the guide rails 42a and 42b in the direction of the arrow Af, and is transferred from the guide rails 42a and 42b to the sliding surfaces 54s and 56s in the casing 30 . The sub battery pack 20a is slid in the direction of the arrow Af along the sliding surfaces 54s and 56s, whereby the connector 24c of the sub battery pack 20a is electrically connected to the connector 58 in the casing 30 .

Then, the operator grasps the lock lever 46 and swings the cover member 34 in the vertical direction with the support lever 36 as a fulcrum. Therefore, the link portion 38 , which swings downward integrally with the cover member 34 , moves the end portion of the housing 30 in the arrow Ab direction downward via the link pin 40 . Thereby, the cover member 34 closes the casing 30, and the casing 30 is kept in a horizontal posture.

In this case, in the first embodiment, the housing 30 is held, for example, in a posture in which the housing 30 is inclined downward by an angle of 10° to 20° from the horizontal direction toward the loading direction. Therefore, the sub battery pack 20a can slide along the sliding surfaces 54s and 56s in a posture of applying a load in the horizontal direction. Therefore, it is not necessary to slide the sub battery pack 20a, which is a heavy object, in the vertical direction (vertical direction), and the burden on the operator can be greatly reduced.

In addition, the sliding surfaces 54s and 56s which are in contact with the sub battery pack 20a are provided on linear protrusions 54 and 56 extending in the sliding direction. Therefore, the sub battery pack 20a can slide in line contact (or point contact) with the protrusions 54 and 56, and the frictional force can be reduced.

As a result, the following effects are obtained: the friction between the sub battery pack 20a and the sliding surfaces 54s and 56s can be effectively reduced, and the attachment and detachment work of the sub battery pack 20a can be easily completed.

Further, the electric vehicle 10 is provided with two protrusions 54 and 56 that are in contact with the sub battery pack 20a and extend in the sliding direction. Therefore, the sub battery pack 20a can be slid while stably supporting the sub battery pack 20a.

Furthermore, as shown in FIGS. 4 and 7 , the sliding surface 54s is separated from the center line SL of the sliding member 52 in the direction of the arrow B1. On the other hand, a linear protrusion 56 is provided on the side wall 30a, and the protrusion 56 is formed with a sliding surface 56s that is in contact with the sub battery pack 20a.

That is, when the sub battery pack 20a is placed on the sliding surface 54s, it tends to incline toward the side wall 30a and comes into contact with the sliding surface 56s provided on the side wall 30a (see FIG. 7). Therefore, since the sub battery pack 20a slides along the side wall 30a, the connector 24c can be easily and reliably inserted into the connector 58 using the side wall 30a as a reference position.

FIG. 8 is an explanatory perspective view of a main part of an electric vehicle 70 according to a second embodiment of the present invention. In addition, the same reference numerals are attached to the same components as those of the electric vehicle 10 of the first embodiment, and the detailed description thereof will be omitted. In addition, the detailed description is abbreviate|omitted similarly in 3rd Embodiment demonstrated below.

The electric vehicle 70 includes a power storage device housing portion 72 in which the sub battery pack 20a can be freely attached and detached. A sliding member 74 is provided on the bottom surface of the casing 30, and the sliding member 74 accommodates the sub battery pack 20a in a nearly horizontal posture. Swipe while tilted horizontally.

On the sliding member 74 , linear first protrusions 76 and linear second protrusions 78 extending in the sliding direction (arrow A direction) of the sub battery pack 20 a are arranged in the arrow B direction. The first protrusions 76 are provided intermittently at intervals t1 in the sliding direction (arrow A direction), and sliding surfaces 76s are formed on the upper surface of the first protrusions 76 . The second protrusions 78 are provided intermittently at intervals t2 in the sliding direction, and sliding surfaces 78s are formed on the upper surface of the second protrusions 78 . The 1st protrusion part 76 and the 2nd protrusion part 78 are arrange|positioned so that at least a part may overlap along the width direction (arrow B direction) which cross|intersects a sliding direction.

As shown in FIG. 9 , the first protruding portion 76 and the second protruding portion 78 are arranged at positions separated from the sealing member 24e of the sub battery pack 20a in the direction of arrow B, respectively. The side wall 30a of the casing 30 is not provided with a protrusion.

In the 2nd Embodiment comprised in this way, the 1st protrusion part 76 and the 2nd protrusion part 78 which are juxtaposed mutually are arrange|positioned so that at least a part may overlap in the arrow B direction. Therefore, it is possible to obtain an effect that the attachment and detachment of the sub battery pack 20a can be stably completed without interruption in the sliding direction of the first protrusions 76 and the second protrusions 78 provided intermittently.

10 is an explanatory perspective view of a main part of an electric vehicle 80 according to a third embodiment of the present invention.

The electric vehicle 80 includes a power storage device housing portion 82 in which the sub battery pack 20a can be freely attached and detached. A sliding member 84 is provided on the bottom surface of the casing 30, and the sliding member 84 accommodates the sub battery pack 20a in a nearly horizontal position, and the sliding member 84 causes the sub battery pack 20a to extend in a larger direction than the vertical direction when attaching and detaching. Swipe while tilted horizontally.

On the sliding member 84, linear first protrusions 86, linear second protrusions 88, linear The third protrusion 90 and the linear fourth protrusion 92 . The first protrusions 86 are provided intermittently with intervals t3 in the sliding direction (arrow A direction), and sliding surfaces 86s are formed on the upper surface of the first protrusions 86 . The second protrusions 88 are intermittently provided at intervals t4 in the sliding direction, and sliding surfaces 88s are formed on the upper surfaces of the second protrusions 88 .

Similar to the second protrusion portion 88 , the third protrusion portion 90 is provided intermittently with an interval t4 in the sliding direction, and a sliding surface 90 s is formed on the upper surface of the third protrusion portion 90 . Similar to the first protrusions 86 , the fourth protrusions 92 are intermittently provided with intervals t3 in the sliding direction, and sliding surfaces 92 s are formed on the upper surfaces of the fourth protrusions 92 . The 1st protrusion part 86 and the 2nd protrusion part 88 are arrange|positioned so that at least a part may overlap along the width direction (arrow B direction) which crosses a sliding direction. The third protruding portion 90 and the fourth protruding portion 92 are arranged so as to overlap at least a part in the arrow B direction.

As shown in FIG. 11, the 2nd protrusion part 88 and the 3rd protrusion part 90 are arrange|positioned at the position spaced apart from the sealing member 24e of the sub battery pack 20a in the arrow B direction. The first protrusions 86 and the fourth protrusions 92 abut on the inclined surfaces 24as and 24bs of the sub battery pack 20a, and are therefore set to have a higher size than the second protrusions 88 and the third protrusions 90 .

In the third embodiment configured in this way, the first protrusions 86 and the fourth protrusions 92 are set to be larger than the second protrusions 88 and the fourth protrusions 92 corresponding to the inclined surfaces 24as and 24bs of the sub battery pack 20a. 3. The size of the protrusion 90 height. Therefore, the connector 24c can be correctly and easily inserted into the connector 58 on the premise that the sub battery pack 20a is not inserted obliquely or loosened.

In addition, even if the sub-battery pack 20a has a plurality of specifications, the sub-battery pack 20a can be uniformly loaded in a horizontal posture by merely adjusting the height of any one of the first protrusions 86 to the fourth protrusions 92 . for loading and unloading.

In addition, in the first to third embodiments, the side surface of the sub battery pack 20a is formed as a flat surface, but as shown in FIG. 11, for example, a plurality of convex shapes may be provided on the side surface of the sub battery pack 20a. Protrusions 94 . Thereby, the frictional force when the sub battery pack 20a slides is reduced, and the strength of the case 30 is improved. In addition, in the first to third embodiments, the structure for accommodating the sub battery pack 20a has been described, but the main battery pack 18 may be housed in the same structure as above instead of the sub battery pack 20a.

Claims (6)

1. An electric vehicle (10, 70, 80) is provided with:

an electrical storage device (18, 20a, 20b) that supplies power to a load; and

an electrical storage device housing unit (22a, 22b, 72, 82) provided on the vehicle side, the electrical storage device (18, 20a, 20b) being detachable from the electrical storage device housing unit (22a, 22b, 72, 82),

the electric vehicle (10, 70, 80) is characterized in that,

the power storage device housing sections (22a, 22b, 72, 82) each have a slide member (52, 74, 84) and a side wall (30a), and the slide members (52, 74, 84) and the side walls (30a) slide the power storage devices (18, 20a, 20b) in a state of being inclined in the horizontal direction to a large extent from the vertical direction when the power storage devices are attached and detached,

linear protrusions (54, 56, 76, 78, 86, 88, 90, 92) extending in the sliding direction are provided on the sliding members (52, 74, 84) and the side wall (30a), the linear protrusions (54, 56, 76, 78, 86, 88, 90, 92) forming sliding surfaces (54s, 56s, 76s, 78s, 86s, 88s, 90s, 92s) that contact the electricity storage devices (18, 20a, 20b),

the bottom surface of the power storage device (18, 20a, 20b) has an inclined surface (24as, 24bs),

the protrusions (54, 76, 78, 86, 88, 90, 92) provided on the sliding member (52, 74, 84) are in contact with the inclined surfaces (24as, 24bs),

the protrusion (56) provided on the side wall (30a) is in contact with a side surface of the electricity storage device (18, 20a, 20 b).

2. The electric vehicle (10, 70, 80) of claim 1,

the electrically powered vehicle (10, 70, 80) is provided with 2 or more of the protrusions (54, 56, 76, 78, 86, 88, 90, 92) that contact the power storage device (18, 20a, 20b) and extend in the sliding direction.

3. The electric vehicle (10, 70, 80) of claim 1,

the protrusion (54, 56, 76, 78, 86, 88, 90, 92) is provided so as to be away from the center line of the slide member (52, 74, 84) toward at least either of the left and right sides.

4. The electric vehicle (10, 70, 80) of claim 1,

the power storage device housing units (22a, 22b, 72, 82) are provided with a cover member (34) that is opened when the power storage devices (18, 20a, 20b) are attached and detached,

an inclined portion (38) is provided on the cover member (34), the inclined portion (38) inclining the sliding surfaces (54s, 56s, 76s, 78s, 86s, 88s, 90s, 92s) from the horizontal direction to 10-20 ° downward toward a loading direction of the electrical storage device (18, 20a, 20b) when opened.

5. An electric vehicle (80) is provided with:

an electrical storage device (20a) that supplies power to a load; and

an electric storage device housing unit (82) provided on the vehicle side, the electric storage device (20a) being detachable from the electric storage device housing unit (82),

the electric vehicle (80) is characterized in that,

the power storage device housing section (82) has a slide member (84) and a side wall (30a), and the slide member (84) and the side wall (30a) slide the power storage device (20a) in a state of being inclined in the horizontal direction to a large extent from the vertical direction when the power storage device housing section is attached and detached,

linear protrusions (86, 88, 90, 92) extending in the sliding direction are provided on the sliding member (84), and the linear protrusions (86, 88, 90, 92) form sliding surfaces (86s, 88s, 90s, 92s) that contact the power storage device (20a),

the bottom surface of the power storage device (20a) has inclined surfaces (24as, 24bs),

the protrusions (86, 88, 90, 92) provided on the sliding member (84) are in contact with the inclined surfaces (24as, 24bs),

a plurality of the protrusions (86, 88, 90, 92) are provided in parallel on the slide member (84),

the protrusions (86, 88, 90, 92) are set to different heights.

6. The electric vehicle (80) of claim 5,

the protrusions (86, 88, 90, 92) are intermittently provided with a space in the sliding direction,

the protrusions (86, 88, 90, 92) arranged in parallel are arranged so that at least a part thereof overlaps in a width direction intersecting the sliding direction.

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