Electric Vehicles

Abstract

To provide an electric vehicle capable of inhibiting a filter from entrapping fluid infiltrated into a filter cover.SOLUTION: An electric vehicle includes a battery pack, a blower, a blower cover, a filter, and a filter cover. The blower supplies air to the battery pack. The blower cover has a top face facing upward and a protrusion protruding from the top face. The blower cover covers the blower. The top face is provided with an inlet port through which the air inhaled by the blower passes. The protrusion is provided with a grove that is above the top face and dented from a surface of the protrusion. The filter is provided at the inlet port. The filter cover covers the top face, the protrusion, and the filter. The protrusion and the filter cover are fitted to each other at a position higher than the top face. The grove is closer to the filter than the fitted part of the protrusion and the filter cover. The electric vehicle discharges the fluid flowing in the grove to a position apart from the filter in a direction orthogonal to a vertical direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an electric vehicle. [Background technology]

[0002] 2. Description of the Related Art Electric vehicles, such as hybrid vehicles (HVs) and electric vehicles (EVs), are equipped with a battery pack and a blower that cools the battery pack. The battery pack and the blower are protected from liquids such as water by a cover. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-034750 A Summary of the Invention [Problem to be solved by the invention]

[0004] The cover has multiple components such as a blower cover that covers the blower and is provided with a filter, and a filter cover that covers the filter. In this case, there is a possibility that liquid such as water may seep into the inside of the cover from the part where the blower cover and the filter cover are joined together.

[0005] An object of the present invention is to provide an electric vehicle that can prevent liquid that has entered the inside of a filter cover from being taken into the filter. [Means for solving the problem]

[0006] In order to achieve the above object, an electric vehicle according to the present invention includes a battery pack, a blower, a blower cover, a filter, and a filter cover. The blower supplies air to the battery pack. The blower cover has a first surface facing upward and a protrusion protruding from the first surface. The blower cover covers the blower. The first surface is provided with an air intake port through which air drawn into the blower passes. The protrusion is provided with a groove recessed downward from a surface of the protrusion above the first surface. The filter is provided at the air intake port. The filter cover covers the first surface, the protrusion, and the filter. The protrusion and the filter cover are brought into contact with each other above the first surface. The groove is closer to the filter than the portion where the protrusion and the filter cover are brought into contact with each other. The electric vehicle discharges liquid flowing through the groove to a position separated from the filter in a direction perpendicular to the up-down direction.

[0007] According to this configuration, the groove provided in the protrusion is closer to the filter than the portion where the protrusion and the filter cover are joined. Therefore, the liquid enters the groove without reaching the filter, flows through the groove, and is discharged to a position away from the filter. This makes it possible for the electric vehicle to prevent liquid that has entered the inside of the filter cover from being drawn into the filter.

[0008] In the electric vehicle according to the present invention, the protrusion protrudes from an end of the first surface in a first direction perpendicular to the up-down direction and extends in a second direction perpendicular to the up-down direction and intersecting the first direction. The groove extends in the second direction. The filter is located between both ends of the groove in the second direction.

[0009] With this configuration, the groove, which is longer than the filter, extends between the filter and the portion where the convex portion and the filter cover are joined together, so that liquid can more reliably enter the groove and liquid that has entered the inside of the filter cover is prevented from being taken in by the filter.

[0010] In the electric vehicle according to the present invention, the protrusion has a second surface located above the first surface and facing upward, and a third surface provided between the first surface and the second surface. A groove is provided in the second surface. The third surface has a curved surface extending in an arc shape from the second surface.

[0011] According to this configuration, the electric vehicle can slow the movement of the liquid, for example by causing the liquid to flow along the convex portions or by introducing the liquid into the concave portions, thereby preventing the liquid from being drawn into the filter. Effect of the Invention

[0012] According to the present invention, the electric vehicle can suppress liquid that has entered the inside of the filter cover from being taken into the filter. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view showing a part of an electric vehicle according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view showing a part of the electric vehicle with the filter cover of the first embodiment removed. [Diagram 3] FIG. 3 is a cross-sectional view showing a part of the electric vehicle according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing a part of an electric vehicle according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the electric vehicle 1 will be described in detail with reference to the accompanying drawings. The configuration of the embodiment described below, and the actions and results (effects) brought about by the configuration are merely examples, and are not limited to the contents described below. Note that in this specification, ordinal numbers are used only to distinguish parts and members, and do not indicate order or priority.

[0015] [First embodiment] The outline and structure of the electric vehicle 1 according to the first embodiment will be described below. Fig. 1 is a perspective view showing a part of the electric vehicle 1 according to the first embodiment. Fig. 2 is a perspective view showing a part of the electric vehicle 1 according to the first embodiment with a filter cover 15 removed. As shown in Figs. 1 and 2, the electric vehicle 1 includes a battery pack 10, a blower 11, a blower cover 12, a filter 13, a duct 14, and a filter cover 15.

[0016] In the following drawings, three mutually orthogonal directions are defined for convenience. The +X direction and -X direction are the front-rear direction for the driver of the electric vehicle 1, and the positive direction of the X axis is the direction from back to front for the driver of the electric vehicle 1. The +Y direction and -Y direction are the left-right direction for the driver of the electric vehicle 1, and the positive direction of the Y axis is the direction from right to left for the driver of the electric vehicle 1. The up-down direction is the height direction of the electric vehicle 1, and the positive direction of the Z axis is the direction from bottom to top of the electric vehicle 1. Note that the expressions indicating directions such as front-rear, left-right, up-down, etc. in this embodiment are names for convenience, and do not limit the position, attitude, or usage mode of the electric vehicle 1.

[0017] The battery pack 10 is a secondary battery (battery) that supplies electricity to the electric vehicle 1, and is, for example, a lithium ion battery. The battery pack 10 includes, for example, a plurality of cells and a case that houses the plurality of cells.

[0018] The blower 11 supplies air (airflow) to the battery pack 10 for cooling the battery pack 10. For example, the blower 11 cools a plurality of cells by supplying airflow inside the case. The blower 11 and the battery pack 10 are arranged in a direction substantially perpendicular to the up-down direction.

[0019] The blower cover 12 covers the blower 11 from above. As shown in Fig. 2, the blower cover 12 has a base 21, a flange 22, and a protrusion 23. The base 21 is formed in a substantially rectangular box shape. However, the base 21 is not limited to this example. The base 21 has an upper wall 31 and a side wall 32.

[0020] The upper wall 31 is formed in a substantially rectangular plate shape perpendicular to the Z direction. The upper wall 31 has an upper surface 31a. The upper surface 31a is an example of a first surface. The upper surface 31a is formed substantially flat and faces upward.

[0021] An air intake port 35 is provided on an upper surface 31a of the upper wall 31. The air intake port 35, for example, penetrates the upper wall 31 and communicates between the inside and the outside of the blower cover 12. Air sucked into the blower 11 passes through the air intake port 35 and flows toward the blower 11.

[0022] The side wall 32 extends downward from the outer edge of the upper wall 31. The side wall 32 has a side surface 32a. The side surface 32a extends substantially downward from the end of the upper surface 31a in the -Y direction. The side surface 32a is formed substantially flat and faces substantially in the -Y direction.

[0023] The flange 22 extends from an edge of the side wall 32 at the lower part toward the outside of the blower cover 12. The flange 22 has a bottom surface 22a. The bottom surface 22a extends from the side surface 32a at the lower part in approximately the -Y direction. The bottom surface 22a is formed approximately flat and faces approximately in the upward direction.

[0024] The side surface 32a of the side wall 32 extends obliquely downward from the upper surface 31a of the upper wall 31 toward the bottom surface 22a of the flange 22. The bottom surface 22a of the flange 22 extends obliquely downward from the side surface 32a of the side wall 32.

[0025] The protrusion 23 protrudes substantially upward from the bottom surface 22a of the flange 22. The protrusion 23 extends in the ±Y direction. The ±Y direction is a direction perpendicular to the up-down direction and is an example of a second direction. In the ±Y direction, the length of the protrusion 23 is longer than the length of the upper surface 31a of the upper wall 31.

[0026] The end of upper wall 31 in the -X direction is connected to protrusion 23. The upper end of protrusion 23 is located above upper surface 31a of upper wall 31. Therefore, when upper surface 31a is used as a reference, protrusion 23 protrudes upward from the end of upper surface 31a in the -X direction. The -X direction is a direction perpendicular to the up-down direction and is an example of a first direction. The ±Y directions are directions intersecting (perpendicular to) the -X direction.

[0027] The protrusion 23 has a surface 41 and a first wall 42. The surface 41 has an upper surface 41a, an inner surface 41b, and an outer surface 41c. The upper surface 41a is an example of a second surface. The inner surface 41b is an example of a third surface.

[0028] The upper surface 41a is located higher than the upper surface 31a of the upper wall 31. The upper surface 41a faces upward. The upper surface 41a has a lower seal surface 41d. The lower seal surface 41d is an example of a fourth surface. The lower seal surface 41d is located at an end of the upper surface 41a in the -X direction. The lower seal surface 41d extends in the ±Y direction between an end of the protrusion 23 in the +Y direction and an end of the protrusion 23 in the -Y direction.

[0029] The inner surface 41b extends substantially downward from an end of the upper surface 41a in the +X direction. The inner surface 41b faces substantially in the +X direction. An end of the upper surface 31a of the upper wall 31 in the -X direction and an end of the side surface 32a of the side wall 32 in the -X direction are connected to the inner surface 41b. Therefore, a part of the inner surface 41b is provided between the upper surface 41a of the protrusion 23 and the upper surface 31a of the upper wall 31. An end of the inner surface 41b in the downward direction is connected to the bottom surface 22a of the flange 22.

[0030] Fig. 3 is a cross-sectional view showing a part of the electric vehicle 1 of the first embodiment. As shown in Fig. 3, the inner side surface 41b has a curved surface 41e and an inclined surface 41f. The curved surface 41e extends in an arc shape from the upper surface 41a. The inclined surface 41f extends obliquely downward from the end of the curved surface 41e in the downward direction toward the bottom surface 22a of the flange 22, and from the upper surface 41a toward the upper surface 31a of the upper wall 31. The inclined surface 41f is formed substantially flat. The upper surface 31a of the upper wall 31 and the side surface 32a of the side wall 32 are connected to the inclined surface 41f.

[0031] The outer surface 41c is located on the opposite side to the inner surface 41b. The outer surface 41c extends downward from the end of the upper surface 41a in the -X direction. The outer surface 41c faces approximately in the -X direction.

[0032] The first wall 42 protrudes substantially upward from the lower seal surface 41d. The first wall 42 extends in the ±Y direction between an end of the protrusion 23 in the +Y direction and an end of the protrusion 23 in the -Y direction.

[0033] A groove 50 is provided in the protruding portion 23. The groove 50 has a first groove 51 and two second grooves 52, 53. The groove 50 may have only one of the two second grooves 52, 53. For example, the groove 50 may have only the second groove 53 of the two second grooves 52, 53.

[0034] The first groove 51 is provided in the upper surface 41a and is recessed downward from the upper surface 41a. That is, the groove 50 is above the upper surface 31a of the upper wall 31 and is recessed downward from the surface 41 of the protrusion 23.

[0035] The first groove 51 extends in the ±Y direction. In the ±Y direction, the length of the first groove 51 is longer than the length of the upper surface 31a of the upper wall 31. In the ±Y direction, the upper surface 31a is located between both ends 51a, 51b of the first groove 51.

[0036] The second grooves 52, 53 are provided on the inner side surface 41b and are recessed from the inner side surface 41b. The second grooves 52, 53 may be provided on the outer side surface 41c instead of the inner side surface 41b, or may be provided on another surface of the protrusion 23.

[0037] One of the second grooves 52 is connected to an end 51a of the first groove 51 in the -Y direction. The other of the second grooves 53 is connected to an end 51b of the first groove 51 in the +Y direction. The second grooves 52 and 53 extend substantially downward from the first groove 51.

[0038] The filter 13 is provided in the air intake port 35. Therefore, the filter 13 is located between both ends 51a, 51b of the first groove 51 in the ±Y direction. The filter 13 has a filter body 61 and a frame 62.

[0039] The filter body 61 is fitted, for example, into the air intake 35. The filter body 61 collects dust from the air passing through the filter body 61. The frame 62 holds the filter body 61. The frame 62 is attached to the upper wall 31, for example, by screws.

[0040] Frame 62 is spaced in the +X direction from inner side surface 41b of protrusion 23. Therefore, a recess 65 is formed by inner side surface 41b of protrusion 23, upper surface 31a of upper wall 31, and frame 62. Recess 65 extends in the ±Y directions between an end of upper surface 31a in the +Y direction and an end of upper surface 31a in the -Y direction.

[0041] The duct 14 is provided between the intake port 35 and the blower 11. Therefore, the duct 14 is also covered by the blower cover 12. The duct 14 guides air from the intake port 35 to the blower 11.

[0042] The filter cover 15 is attached to the blower cover 12 and covers the blower cover 12. Note that the filter cover 15 may be attached to another component such as the battery pack 10. The filter cover 15 has a top wall 71, two side walls 72, 73, and a second wall 74.

[0043] The upper wall 71 is formed in a substantially rectangular plate shape and is spaced upward from the blower cover 12. The filter cover 15 covers the upper surface 31a of the upper wall 31, the upper surface 41a and inner surface 41b of the protrusion 23, the groove 50, and the filter 13 from above.

[0044] The side wall 72 extends substantially downward from an end of the upper wall 71 in the -Y direction. The side wall 72 is spaced apart from the side surface 32a of the side wall 32 in the -Y direction and covers the side surface 32a. Furthermore, the side wall 72 is spaced apart from the second groove 52 in the -Y direction.

[0045] A plurality of slits 75 are provided in the side wall 72. The slits 75 penetrate the side wall 72. Air sucked by the blower 11 flows from the slits 75 into the space between the side wall 32 and the side wall 72. Furthermore, the air passes through the space between the upper wall 31 and the upper wall 71 and flows into the air intake port 35.

[0046] The side wall 73 extends substantially downward from an end of the upper wall 71 in the -X direction. In this embodiment, the side wall 73 extends from the upper wall 71 toward the lower seal surface 41d of the protrusion 23. The side wall 73 has an upper seal surface 73a. The upper seal surface 73a is an example of a fifth surface. The upper seal surface 73a is formed flat and faces substantially downward. The upper seal surface 73a faces the lower seal surface 41d of the protrusion 23. Furthermore, the upper seal surface 73a faces the first wall 42 via a gap.

[0047] The second wall 74 protrudes substantially downward from the upper seal surface 73a. In other words, the second wall 74 protrudes from the upper seal surface 73a toward the lower seal surface 41d. The second wall 74 extends in the ±Y direction between an end of the side wall 73 in the +Y direction and an end of the side wall 73 in the -Y direction.

[0048] The first wall 42 and the second wall 74 are arranged side by side with a gap therebetween in the X direction. The second wall 74 is closer to the filter 13 than the first wall 42. Note that the first wall 42 may be closer to the filter 13 than the second wall 74.

[0049] The lower seal surface 41d of the protrusion 23 faces the upper seal surface 73a of the filter cover 15. Furthermore, the lower seal surface 41d faces the second wall 74 via a gap. Therefore, the protrusion 23 and the filter cover 15 are fitted together to form a labyrinth seal L, including gaps between the lower seal surface 41d and the second wall 74, between the first wall 42 and the second wall 74, and between the first wall 42 and the upper seal surface 73a. The labyrinth structure of the labyrinth seal L prevents liquid from penetrating into the inside of the filter cover 15.

[0050] The labyrinth seal L is located above the upper surface 31a of the upper wall 31. That is, the protrusion 23 and the filter cover 15 are mated with each other above the upper surface 31a. The state in which the protrusion 23 and the filter cover 15 are mated can be expressed as the protrusion 23 and the filter cover 15 being connected, joined, coupled, united, facing, or combined.

[0051] The groove 50 is closer to the filter 13 than the labyrinth seal L, which is the portion where the protrusion 23 and the filter cover 15 are joined together. The first groove 51 is interposed between the labyrinth seal L and the entire area of ​​the filter 13 in the ±Y directions.

[0052] There is a possibility that liquid may pass through the labyrinth seal L and enter the inside of the filter cover 15. In this case, the liquid that has passed through the labyrinth seal L flows into the first groove 51 formed in the upper surface 41a due to gravity or vibration. The liquid then flows into the second groove 52 or second groove 53 connected to the first groove 51, and is discharged from the second grooves 52, 53 to the inner surface 41b of the protrusion 23. In this way, the groove 50 discharges the liquid flowing through the groove 50 to a position separated from the filter 13 in the ±Y direction.

[0053] The liquid may be discharged from either of the two second grooves 52, 53. That is, groove 50 can disperse the liquid flowing through first groove 51. Therefore, groove 50 can prevent the liquid from overflowing from first groove 51 even when a large amount of liquid enters first groove 51 or when electric vehicle 1 is tilted in any direction, forward / backward, left / right.

[0054] Furthermore, when the groove 50 has only the second groove 53 of the two second grooves 52, 53, the liquid flowing through the first groove 51 is discharged to the inner side surface 41b of the convex portion 23 only from the second groove 53, which is farther from the slit 75 than the filter 13. Therefore, the groove 50 prevents the liquid from being discharged to the inner side surface 41b of the convex portion 23 from a position closer to the slit 75 than the filter 13. In other words, the groove 50 can prevent the liquid flowing through the groove 50 from being taken into the filter 13 by riding on the airflow flowing from the slit 75 to the intake port 35.

[0055] The liquid flows down the inner surface 41b by gravity to the bottom surface 22a of the flange 22. The liquid is discharged to the outside of the filter cover 15 through the gap G between the flange 22 and the side wall 72, for example, or is absorbed by the floor carpet inserted in the gap G. In this way, the groove 50 can suppress the liquid from flowing toward the filter 13.

[0056] On the other hand, there is a possibility that the liquid will flow over the groove 50 toward the filter 13. In this case, the liquid will flow from the upper surface 41a of the protrusion 23 to the curved surface 41e. The curved surface 41e will slow down the movement of the liquid. Therefore, the liquid will flow gently from the curved surface 41e to the inclined surface 41f and into the recess 65. The liquid will flow from the recess 65 along the side surface 32a of the side wall 32 toward the bottom surface 22a of the flange 22. In this way, the recess 65 will discharge the liquid flowing through the groove 50 to a position separated from the filter 13 in the ±Y direction.

[0057] As described above, the grooves 50 drain liquid that has entered the inside of the filter cover 15. Meanwhile, the grooves 50 are not visible from the outside of the filter cover 15 when the filter cover 15 is attached to the blower cover 12. This improves the design of the blower cover 12. Furthermore, since the exterior shape of the filter cover 15 has few irregularities, liquid is prevented from entering the inside of the filter cover 15.

[0058] A labyrinth seal L formed at the portion where the protrusion 23 and the filter cover 15 are joined together prevents liquid from entering the inside of the filter cover 15. In other words, the electric vehicle 1 has the function of preventing liquid from entering and promoting its discharge.

[0059] In the above embodiment, the electric vehicle 1 includes a battery pack 10, a blower 11, a blower cover 12, a filter 13, and a filter cover 15. The blower 11 supplies air to the battery pack 10. The blower cover 12 has an upper surface 31a facing upward and a protrusion 23 protruding from the upper surface 31a. The blower cover 12 covers the blower 11. The upper surface 31a is provided with an air intake port 35 through which air drawn into the blower 11 passes. The protrusion 23 is provided with a groove 50 recessed downward from a surface 41 of the protrusion 23 above the upper surface 31a. The filter 13 is provided in the air intake port 35. The filter cover 15 covers the upper surface 31a, the protrusion 23, and the filter 13. The protrusion 23 and the filter cover 15 are fitted to each other above the upper surface 31a. The groove 50 is closer to the filter 13 than the portion where the protrusion 23 and the filter cover 15 are joined. The electric vehicle 1 discharges the liquid flowing through the groove 50 to a position separated from the filter 13 in a direction perpendicular to the up-down direction.

[0060] There is a possibility that liquid such as water may seep into the inside of the filter cover 15 from the portion where the protrusion 23 and the filter cover 15 are joined. However, in the above-described configuration, the groove 50 provided in the protrusion 23 is closer to the filter 13 than the portion where the protrusion 23 and the filter cover 15 are joined. For this reason, the liquid enters the groove 50 without reaching the filter 13, flows through the groove 50, and is discharged to a position away from the filter 13. In this way, the electric vehicle 1 can prevent the liquid that has seeped into the inside of the filter cover 15 from being taken into the filter 13.

[0061] In this embodiment, the protrusion 23 protrudes from the end of the upper surface 31a in the -X direction and extends in the ±Y direction. The groove 50 extends in the ±Y direction. The filter 13 is located between both ends 51a, 51b of the groove 50 in the ±Y direction.

[0062] Liquid may enter the inside of filter cover 15 from any position in the ±Y direction of the portion where protrusion 23 and filter cover 15 are joined. However, in the above-described configuration, groove 50, which is longer than filter 13, extends between filter 13 and the portion where protrusion 23 and filter cover 15 are joined. This allows liquid to more reliably enter groove 50, and inhibits liquid that has entered the inside of filter cover 15 from being taken in by filter 13.

[0063] In this embodiment, the protrusion 23 has an upper surface 41a that is located above the upper surface 31a and faces upward, and an inner surface 41b that is provided between the upper surface 31a and the upper surface 41a. A groove 50 is provided in the upper surface 41a. The inner surface 41b has a curved surface 41e that extends in an arc shape from the upper surface 41a.

[0064] If liquid that has entered the inside of the filter cover 15 overflows from the groove 50, the liquid flows from the upper surface 41a along the curved surface 41e of the inner surface 41b. If the upper surface 41a and the inner surface 41b intersect at a right angle, the liquid may splash from the upper surface 41a toward the filter 13. In other words, the electric vehicle 1 configured as described above can prevent the liquid from being taken into the filter 13 by slowing down the movement of the liquid, for example by causing the liquid to flow along the convex portion 23 or by introducing the liquid into the concave portion 65.

[0065] In this embodiment, the protrusion 23 has a lower seal surface 41d facing the filter cover 15 and a first wall 42 protruding from the lower seal surface 41d. The filter cover 15 has an upper seal surface 73a facing the lower seal surface 41d and a second wall 74 protruding from the upper seal surface 73a toward the lower seal surface 41d. One of the first wall 42 and the second wall 74 is closer to the filter 13 than the other. The protrusion 23 and the filter cover 15 are fitted together to form a labyrinth seal L including gaps between the lower seal surface 41d and the second wall 74, between the first wall 42 and the second wall 74, and between the first wall 42 and the upper seal surface 73a.

[0066] In the above-described configuration, the portion where the protrusion 23 and the filter cover 15 are joined forms a labyrinth seal L, thereby preventing liquid from entering the inside of the filter cover 15. Even if liquid does enter from the portion where the protrusion 23 and the filter cover 15 are joined, the liquid enters the groove 50 and is discharged. This allows the electric vehicle 1 to more reliably prevent liquid from being taken into the filter 13.

[0067] [Second embodiment] The outline and structure of the electric vehicle 1 according to the second embodiment will be described below. Fig. 4 is a cross-sectional view showing a part of the electric vehicle 1 according to the second embodiment. As shown in Fig. 4, in the second embodiment, the lower end 52a of the second groove 52 is located below the filter 13. At this time, the second groove 52 extends from the curved surface 41e of the convex portion 23 to the inclined surface 41f, and is recessed from the inclined surface 41f in the -X direction.

[0068] The portion of the convex portion 23 between the second groove 52 and the end of the convex portion 23 in the -Y direction acts as a barrier against the airflow flowing from the slit 75 to the intake port 35, thereby preventing liquid flowing through the second groove 52 from being carried by the airflow and being drawn into the filter 13.

[0069] In the above-described second embodiment, the groove 50 has a first groove 51 provided on the upper surface 41a and a second groove 52 provided on the inner side surface 41b and connected to the first groove 51. A lower end 52a of the second groove 52 is located below the filter 13.

[0070] With the above-mentioned configuration, the liquid flowing through the first groove 51 is discharged to the outside of the groove 50 from the lower end 52a of the second groove 52. Since the liquid discharged to the outside of the groove 50 is discharged to the outside of the groove 50 (second groove 52) below the filter 13, even if the liquid is carried by the airflow of the air sucked by the blower 11, for example, it is unlikely to be taken into the filter 13. Therefore, the electric vehicle 1 can prevent the liquid from being taken into the filter 13.

[0071] Although the embodiment of the present invention has been described above, the above-mentioned embodiment is presented as an example and is not intended to limit the scope of the present invention. This new embodiment can be embodied in various other forms. In addition, various omissions, substitutions, and modifications can be made without departing from the gist of the invention. In addition, this embodiment is included in the scope and gist of the invention, and is included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0072] 1 electric car 10 Battery pack 11 Blower 12 Blower cover 13 Filters 15 Filter cover 23 Convex 31a Top surface 35 Air Intake 41 Surface 41a Top side 41b Inside surface 41d Lower seal surface 41e curved surface 42 The First Wall 50 grooves 51 First Groove 51a, 51b Ends of the first groove 52, 53 Second groove 52a Lower end of second groove 73a Upper seal surface 74 The Second Wall L Labyrinth Seal

Claims

1. A battery pack; a blower for supplying air to the battery pack; a blower cover having a first surface facing upward and a protrusion protruding from the first surface, covering the blower, an air intake port through which air drawn into the blower passes being provided in the first surface, and a groove recessed downward from a surface of the protrusion above the first surface; A filter provided at the intake port; a filter cover that covers the first surface, the protrusion, and the filter; Equipped with The protrusion and the filter cover are fitted together above the first surface, The groove is closer to the filter than a portion where the convex portion and the filter cover are joined, and discharges the liquid flowing through the groove to a position spaced apart from the filter in a direction perpendicular to the up-down direction. Electric car.

2. the protrusion protrudes from an end of the first surface in a first direction perpendicular to a vertical direction and extends in a second direction perpendicular to the vertical direction and intersecting the first direction; The groove extends in the second direction, the filter is located between opposite ends of the groove in the second direction; The electric vehicle according to claim 1.

3. the protrusion has a second surface located above the first surface and facing upward, and a third surface provided between the first surface and the second surface, the groove being provided on the second surface; The third surface has a curved surface extending in an arc shape from the second surface. The electric vehicle according to claim 2.

Images