JP2015209115A - Cooling structure of electric device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling structure of an electric device which traps foreign objects without increasing the number of components and achieves small air circulation resistance.SOLUTION: A lid 2 includes an intake port 24a for air cooling an electric device at the rear side of a vertical wall 23. A trim 15 on which an intake grille 16 is disposed is provided at a kick-up part 5a. The vertical wall 23 is disposed in a rear projection area formed by projecting the intake grille 16 to the rear side. The vertical wall 23, the trim 15, and a flange 21 of the lid 2 form a first foreign object capturing part 32.

Description

  The present invention relates to a cooling structure for an electric device.

  Conventionally, a cooling air introduction chamber is provided by partitioning a corner of the high voltage battery storage room provided on the lower surface of the rear seat, the intake port of the intake blower is connected to the cooling air introduction chamber, and the intake port of the intake blower A cooling structure for a high-voltage battery in which a shielding plate is provided between the air intake slit (see, for example, Patent Document 1). In addition, the battery pack is installed in the accommodation space formed by the floor panel and the under-seat cover panel, and the suction port of the blower fan is communicated with the suction chamber provided by dividing the accommodation space. In the suction chamber, there is disclosed a vehicle power supply device provided with a dustproof and soundproof cover that covers the suction port of the blower fan from the slit side of the under-seat cover (for example, see Patent Document 2). According to Patent Documents 1 and 2, foreign matter, liquid, or the like that may enter through the slit is blocked by the shielding plate or the dustproof / soundproof cover, and is prevented from reaching the intake port of the cooling blower or the blower fan.

JP 2002-166728 A Japanese Patent No. 37777981

  However, according to Patent Documents 1 and 2, the addition of a shielding plate and a dustproof / soundproof cover increases the number of parts and increases the manufacturing cost. In addition, a space for providing a shielding plate such as an air introduction chamber is required, and there is a possibility that spaces such as a vehicle compartment and a luggage compartment are narrowed. Further, since the flow of air from the intake grill to the fan becomes complicated, there is a possibility that the air flow resistance increases and wind noise or the like is generated, and it is necessary to add a silencer or the like. In addition, foreign matter and liquid that have passed through the intake grille enter the case of the high-voltage battery, and in order to remove the foreign matter, a complicated operation of removing the seat and the cover of the high-voltage battery is required. Further, when the intake grill is closed, it is necessary to provide an emergency passage for introducing cooling air, which may increase the cost.

  An object of the present invention is to provide a cooling structure for an electric device that can trap foreign matter without increasing the number of parts and that has low air flow resistance.

In order to achieve the above object, the invention described in claim 1
A rear seat (for example, a rear seat provided behind a kick-up portion (for example, a kick-up portion 5a in an embodiment described later) formed so as to rise from a front floor panel (for example, a front floor panel 5 in an embodiment described later). For example, the rear seat 9) in the embodiment described later,
Below the rear seat, an opening (for example, a hole H in an embodiment described later) that opens between the kick-up portion and a rear floor panel (for example, a rear floor panel 6 in an embodiment described later),
Case (for example, case 1 in the later-described embodiment) that houses an electrical device (for example, electric device D in the later-described embodiment) and a lid member that covers the case (for example, lid 2 in the later-described embodiment) And an electric device storage part (for example, an electric device container P in an embodiment described later) inserted into the opening,
The case includes an attachment flange that can be attached to the kick-up portion and the rear floor panel (for example, an upper flange portion 12 and a lower flange portion 13 in an embodiment described later),
The lid member includes a flange that can be attached to the kick-up portion and the rear floor panel via the attachment flange of the case (for example, a flange 21 in an embodiment described later),
A cooling structure for an electric device that cools the electric device by supplying air in a passenger compartment (for example, a passenger compartment 30 in an embodiment described later),
The lid member includes an air inlet for cooling air for an electric device (for example, an air inlet in an embodiment described later) formed behind a vertical wall (for example, a vertical wall 23 in an embodiment described later) provided with the flange. 24a)
The kick-up portion is provided with a trim (for example, a trim 15 in an embodiment described later) provided with an intake grill (for example, an intake grill 16 in an embodiment described later),
The vertical wall is disposed in a projection region at least a part of which projects the intake grille backward,
A first foreign matter catcher (for example, a first foreign matter catcher 32 in an embodiment described later) is formed by the vertical wall, the trim, and the flange.

The invention according to claim 2 is the invention according to claim 1,
An intake cover (for example, an intake cover 25 in an embodiment described later) that is integrally formed from the lid member and covers the upper side of the intake port;
The rear seat is held by the intake cover and the lid member.

In the invention according to claim 3, in the invention according to claim 1 or 2,
A gap (for example, a gap C in an embodiment described later) is provided between the intake grill and the flange.
A second foreign matter trapping portion (for example, a second foreign matter trapping portion 33 in an embodiment described later) is formed by the trim and the kick-up portion through the gap.

In the invention according to claim 4, in the invention according to any one of claims 1 to 3,
The intake port is formed by an intake pipe (for example, an intake pipe 24 in an embodiment described later) that penetrates the upper surface of the lid member.
The cooling structure for an electric device, wherein the intake port protrudes from an upper surface of the lid member (for example, a ceiling portion 22 in an embodiment described later).

  According to the first aspect of the present invention, by providing a vertical wall in the air flow path and buffering the air flow by the vertical wall, foreign substances and liquids that may enter with the air can be removed, and the electric device is stored. Can prevent foreign matter and liquid from entering the case. In addition, by setting the space surrounded by the vertical wall, the flange portion, and the trim as a foreign matter trapping part that traps the invading foreign matter and liquid, the foreign matter trapping part can be formed without causing an increase in the number of parts, Manufacturing cost can be reduced.

  According to invention of Claim 2, the surface rigidity of the cover member holding a back seat can be improved, and a back seat can be attached reliably. In addition, a space can be secured above the intake port, and air from the room can be reliably supplied.

  According to the third aspect of the present invention, it is possible to remove the foreign matter trapped in the foreign matter catching section by simply removing the trim, and the foreign matter can be removed without increasing the number of parts separately. In addition, the foreign matter capturing part can function as a silencer, and intake noise can be reduced.

  According to the fourth aspect of the present invention, since the intake pipe protrudes from the upper surface of the lid member, foreign matter and liquid are prevented from entering the electric device housing portion from the intake port through the lid member.

It is a principal part perspective view of the cooling structure of the electric device which concerns on one Embodiment of this invention. It is the perspective view which looked down at the electric device accommodating body before being inserted in the opening part provided between the kick-up part and the rear floor panel from the left front. FIG. 3 is a cross-sectional view taken along the line III-III of the electric device container shown in FIG. 2. It is the elements on larger scale of the III-III arrow sectional drawing shown in FIG. 3, (a) is the elements on larger scale of the area | region K1, (b) is the elements on larger scale of the area | region K2. It is the elements on larger scale of the right side volt | bolt vicinity among the VV arrow directional cross-sectional views of the electrical device container shown in FIG. It is VI-VI arrow sectional drawing of the electric device container shown in FIG. It is the disassembled perspective view which looked down at the electric device container from the left front. It is a VIII-VIII arrow directional cross-sectional view of the electric device container shown in FIG. It is principal part sectional drawing of the modification which has arrange | positioned the intake grille to the trim lower part so that removal is possible. It is principal part sectional drawing of the other modification which made it possible to open and close a part of trim in front of a foreign material capture part.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 8, the electrical device cooling structure of the present embodiment is provided with an electrical device container P in a hole H provided in a floor panel F below the rear seat 9 (see FIG. 8). The cooling air in the passenger compartment 30 is supplied into the electric device housing P through the intake grill 16 disposed below the rear seat 9 to cool the electric device D, and then the exhaust duct 41 is used to cool the electric device D. It is structured to exhaust into the cargo room 31.

<Configuration of electrical device container>
First, the electric device container P will be described.
The electric device container P shown in FIGS. 1 and 2 accommodates an electric device D (see FIG. 3) such as a battery, a DC / DC converter, an inverter, and an ECU, and is mounted on, for example, a hybrid vehicle. The electric device container P is fastened to the floor panel F in a state of being fitted from above into a hole H formed in a metal floor panel F (body panel).

  As shown in FIG. 3, the electrical device container P includes a case 1, a lid 2, an upper seal 3, a lower seal 4, reinforcing members 51 and 52, collars 61 and 62, a frame member 7, and the like. And various fastening members (bolts B1, nuts N1, etc.).

(Case)
A case 1 shown in FIG. 3 includes a case body 11, an annular upper flange portion 12 that extends outward from the side wall 11 a of the case body 11, and a side wall 11 a of the case body 11 that is disposed below the upper flange portion 12. And an annular lower flange portion 13 extending outward. The side wall 11a, the upper flange portion 12, and the lower flange portion 13 of the case body 11 have a rectangular frame shape in plan view (see FIG. 7).

  The case main body 11 is a resin member having a box shape (concave shape) with an upper opening, and the outer shape thereof is a rectangular parallelepiped shape. The case body 11 is configured to be able to accommodate the electric device D described above.

  Note that a rectangular hole H corresponding to the shape of the side wall 11a (outer side surface) of the case body 11 is formed below the rear seat 9 in the vehicle floor panel F (see FIG. 2). The case main body 11 is fastened to the floor panel F in a state of being fitted in the hole H. Around the hole H, a plurality of insertion holes h1 (see FIG. 4) through which bolts B1 (see FIG. 4) described later are inserted are formed. When the case 1 is attached to the floor panel F, the bottom wall of the case 1 and an under cover (not shown) installed below the case 1 are spaced apart in the vertical direction.

  The hole H is an opening that is opened between the rear floor panel 6 and the kick-up portion 5a formed so as to rise between the left and right skeleton members 8 from the rear end portion of the front floor panel 5 (FIG. 1, FIG. 2).

  The upper flange portion 12 shown in FIG. 3 extends outward from the upper end of the side wall 11a of the case body 11, and the vicinity of the outer edge extends upward. The upper flange portion 12 is provided in an annular shape over the entire circumference of the side wall 11a of the case body 11 (see FIG. 7). The upper flange portion 12 is pressed (compressed) in the vertical direction by a flange 21 of the lid 2 and reinforcing members 51 and 52 described later. Therefore, in order to ensure rigidity, the upper flange portion 12 is formed relatively thick in the vertical direction. At the upper end of the upper flange portion 12, a seal groove 12v that is recessed downward in a longitudinal sectional view is formed over the entire circumference (see FIGS. 4 and 7). An annular upper seal 3 to be described later is installed in the seal groove 12v.

  As shown in FIGS. 6 and 7, the upper flange portion 12 has a plurality of fastening portions 12 a (eight in this embodiment: see FIG. 7) for fastening a frame member 7 described later. The fastening portion 12a is provided on the inner side in the front-rear direction than the above-described seal groove 12v, and is formed with a relatively large thickness in consideration of the action of the load of the electric device D. The fastening portion 12a is formed with an insertion hole h2 for inserting the bolt B2 for fixing the frame member 7 and the cylindrical collar C2 along the vertical direction. In addition, an annular groove 12w is formed in the fastening portion 12a so as to surround the head of the bolt B2 in a plan view, and an O-ring R is installed in the groove 12w.

  In addition, among the upper flange portion 12, a plurality of insertion holes h3 (see FIGS. 5 and 7) for bolts B3 for fixing the lid 2 described later to the case 1 are formed outside the seal groove 12v. The insertion hole h3 is fitted with a nut N3 having a U-shape in cross section, which is a counterpart of the bolt B3.

  The lower flange portion 13 shown in FIG. 3 extends outward from the side wall 11a below the upper flange portion 12 in the case body 11, and is formed in an annular shape over the entire circumference of the side wall 11a. In other words, the upper flange portion 12, the lower flange portion 13, and the side wall 11a of the case body 11 form a concave groove v over the entire circumference of the side wall 11a. Reinforcing members 51 and 52, to which collars 61 and 62, which will be described later, are welded, are fitted into the groove v along the left-right direction (see FIG. 7). A portion of the upper flange portion 12 corresponding to the collar 61 in the left-right direction is recessed inward in the front-rear direction so as not to interfere with the collar 61 (see FIG. 7).

  As shown in FIG. 3, the outer end portion of the lower flange portion 13 is located outside the hole H over the entire circumference, and a lower seal 4 described later is installed (adhered) on the lower surface thereof. . When the electric device container P is fitted into the floor panel F from above, the lower flange portion 13 is locked to the floor panel F, and the annular lower seal 4 is compressed in the vertical direction so as to adhere to the floor panel F. It is supposed to be.

  In the state where the electric device container P is installed on the floor panel F, the lower portion of the case 1 below the lower flange portion 13 (and the lower seal 4 described later) faces the outside of the passenger compartment, and The portion above the side flange portion 13 faces the vehicle interior.

(lid)
The lid 2 closes the opening of the case body 11 having a box shape, and is formed, for example, by pressing a metal plate. The lid 2 has a ceiling portion 22 formed in a substantially rectangular shape corresponding to the opening of the case body 11, a substantially rectangular frame-shaped vertical wall 23 that hangs down integrally from the outer peripheral edge of the ceiling portion 22, and a vertical wall 23. And a flange 21 extending in the horizontal direction from the lower end edge of the entire surface (see FIGS. 2 and 6).

  In addition, an intake pipe 24 having an intake port 24 a that penetrates the ceiling portion 22 is formed on the ceiling portion 22 so as to protrude upward. The intake pipe 24 is on the center side (rear side) of the lid 2 with respect to the vertical wall 23, and the upper end of the intake pipe 24 is provided at a position higher than the ceiling portion 22. From the rear side of the ceiling portion 22, an intake cover 25 having a substantially arc-shaped cross section is integrally formed toward the front upper side so as to cover the upper side of the intake pipe 24. In the lid 2, the intake pipe 24 and the intake cover 25 are opposite to a hole ht formed on the right rear side of the vehicle in order to expose the exhaust duct 41 (see FIGS. 1 and 2) to the outside, that is, on the left side of the vehicle. It is arranged in the front.

  The flange 21 is formed with a plurality of insertion holes h4 through which the bolts B1 (see FIG. 4) are inserted and insertion holes h5 through which the bolts B3 (see FIG. 5) are inserted. In addition, the lid 2 has a hole ht (see FIG. 7) for exposing the exhaust duct 41 (see FIGS. 1 and 2) to the outside, and a hole (not shown) for drawing out the wiring of the electric device D. ) Is formed.

(Upper seal)
The upper seal 3 shown in FIG. 7 is an annular seal member installed in a seal groove 12v (upper surface of the upper flange portion 12) formed in the upper flange portion 12, and is between the upper flange portion 12 and the lid 2. Intervene. In order to prevent water from entering the case 1 and protect the electrical device D, the upper seal 3 is required to have higher sealing performance than the lower seal 4 described later. Therefore, it is preferable to use the upper seal 3 having a larger elastic restoring force (reaction force) due to compression than the lower seal 4. As the upper seal 3, for example, it is preferable to use a rubber O-ring or gasket having a high waterproof property.

  Then, a bolt B1 (see FIG. 3) that fastens the lid 2 and the floor panel F is screwed to the nut N1, whereby the upper seal 3 is compressed in the vertical direction, and the lower surface of the flange 21 of the lid 2 and the upper flange It is in close contact with the upper surface of the portion 12. Note that the upper end of the upper seal 3 is located above a collar 61 (see FIG. 4A) described later in an uncompressed state.

(Lower seal)
The lower seal 4 shown in FIG. 7 is an annular seal member installed (for example, bonded) on the lower surface of the lower flange portion 13 and is interposed between the lower flange portion 13 and the floor panel F. . As the lower seal 4, it is preferable to use an opt sealer (foamed resin) having a smaller elastic restoring force (that is, flexible) than the upper seal 3, or a silicon or urethane sealer. Accordingly, it is possible to prevent water from entering the vehicle compartment through the hole H of the floor panel F while absorbing the component tolerance of the floor panel F and the like with the lower seal 4. In addition, the ept sealer has an advantage that it is less expensive than a rubber O-ring.

  A bolt B1 (see FIG. 3) that fastens the lid 2 and the floor panel F is screwed into the nut N1, whereby the lower seal 4 is compressed in the vertical direction, and the lower surface of the lower flange portion 13 and the floor panel are compressed. It is in close contact with the upper surface of F (near the edge of the hole H). The lower seal 4 has a lower end positioned below the collars 61 and 62 described later in a state where the lower seal 4 is not compressed.

(Reinforcing member)
The reinforcing members 51 and 52 shown in FIG. 3 are metal members sandwiched between the upper flange portion 12 and the lower flange portion 13 and extend in the left-right direction. The upper flange portion 12 and the lower flange portion 13 have a rectangular frame shape in plan view as described above, and the reinforcing members 51 and 52 correspond to one opposite side (the opposite side along the left-right direction) of the rectangular frame shape. It is installed in the place to do. That is, as shown in FIG. 7, one reinforcing member 51 is fitted from the front side of the case 1, and the other reinforcing member 52 is fitted from the rear side of the case 1.

  In the present embodiment, no reinforcing member is installed at a location along the front-rear direction in the case 1. Therefore, it is preferable to increase the rigidity by providing a plurality of reinforcing ribs (not shown) protruding outward from the side wall 11a of the case 1 at the location. For example, the rib extends in the vertical direction from the upper flange portion 12 to the lower flange portion 13.

  The reinforcing member 51 shown in FIG. 4A is formed, for example, by welding ends of metal plates 51a and 51b having a C shape in a longitudinal sectional view, and the cross section has a rectangular frame shape. . The vertical width of the reinforcing member 51 is substantially equal to the distance between the upper flange portion 12 and the lower flange portion 13. The same applies to the other reinforcing member 52 shown in FIG.

  One reinforcing member 51 is formed with a plurality of holes h6 for installing a collar 61 to be described later. Of the other reinforcing member 52 shown in FIG. 4B, the lower metal plate 52b is formed with a plurality of holes h7 for installing the collar 62, and the upper metal plate 52a is inserted with the bolt B1. A plurality of insertion holes h8 are formed (see FIG. 7). Note that one of the region K2 and the region K1 illustrated in FIG. 3 may have the same configuration as the other.

  As shown in FIGS. 6 and 7, the upper metal plate 52a has a plurality of insertion holes h9 through which the bolts B2 are inserted. Further, a nut N2 which is a counterpart of the bolt B2 is welded in advance to a portion corresponding to the insertion hole h9 on the lower surface of the upper metal plate 52a.

(Color)
A collar 61 shown in FIG. 4A is a metal member having a cylindrical shape, and is welded to the reinforcing member 51 while penetrating the reinforcing member 51. In a state in which the collar 61 is welded to the reinforcing member 51 extending in the left-right direction, the collar 61 extends in the up-down direction (see FIG. 7). Further, in the state where the bolt B <b> 1 is fastened, the upper end of the collar 61 is in contact with the lower surface of the flange 21 of the lid 2, and the lower end of the collar 61 is in contact with the upper surface of the floor panel F.

  Since the collar 61 is fixed (welded) to the reinforcing member 51, the degree to which the upper seal 3 is compressed can be adjusted by the length of the collar 61 protruding upward from the reinforcing member 51. That is, the upper end of the collar 61 is positioned slightly above the upper end of the upper flange portion 12, and the upper seal 3 is appropriately compressed by bringing the lid 2 into contact with the collar 61. . The length by which the collar 61 protrudes upward from the reinforcing member 51 is set in consideration of the material of the upper seal 3 and the required sealing performance.

  Similarly, the extent to which the lower seal 4 is maintained can be adjusted by the length of the collar 61 protruding downward from the reinforcing member 51. The lower end of the collar 61 is positioned a predetermined distance below the lower flange portion 13, and the lower seal 4 is appropriately compressed by bringing the collar 61 into contact with the floor panel F. Yes. The length of the collar 61 protruding downward from the reinforcing member 51 is set in consideration of the material of the lower seal 4 and the required sealing performance.

  The collar 62 shown in FIG. 4B is the same as the collar 61 welded to the reinforcing member 51 except that only the lower metal plate 52b is penetrated. The upper end of the collar 62 is in contact with the lower surface of the upper metal plate 52a, and the lower end thereof is in contact with the upper surface of the floor panel F. The degree to which the lower seal 4 is compressed can be adjusted by the length of the collar 62 protruding downward from the reinforcing member 52.

(Frame member)
A frame member 7 shown in FIG. 6 is a metal member for holding an electric device D (for example, a battery pack) arranged in two upper and lower stages while being hung on the upper flange portion 12 of the case 1. The frame member 7 has a device side fastening portion 71 fastened to the electric device D and a flange side fastening portion 72 fastened to the upper flange portion 12. The device-side fastening portion 71 extends in the vertical direction, and the flange-side fastening portion 72 extends forward (or rearward) from the upper end of the device-side fastening portion 71 toward the upper flange portion 12.

  The front-side device-side fastening portion 71 is fastened to the front surface of the electric device D using bolts B4 and nuts N4 (the same applies to the rear-side device-side fastening portion 71). The flange-side fastening portion 72 is fastened to the upper flange portion 12 with the tip thereof being in contact with the upper surface of the upper flange portion 12. An insertion hole h <b> 10 through which the bolt B <b> 2 is inserted is formed near the tip of the flange side fastening portion 72. The flange side fastening portion 72 is fastened to the upper flange portion 12 and the reinforcing members 51 and 52 by the bolt B2 and the nut N2 welded to the inner wall surfaces (ceiling surfaces) of the reinforcing members 51 and 52.

  A cylindrical collar C2 is installed in the insertion hole h2 provided in the fastening portion 12a of the upper flange portion 12, and the bolt B2 is inserted through the collar C2. By installing the collar C2 extending in the vertical direction in this way, the rigidity of the portion where the load of the electric device D acts can be increased.

  As shown in FIG. 6, in this embodiment, the pair of frame members 7, 7 are fixed to the electric device D so as to be substantially symmetrical in the front-rear direction, and are fastened with each frame member 7 hung on the upper flange portion 12. I tried to do it. In practice, a plurality of pairs of frame members 7 are installed along the left-right direction. In a state where the device side fastening portion 71 is fastened to the electrical device D and the flange side fastening portion 72 is fastened to the upper flange portion 12, the electrical device D is separated from the bottom surface of the case body 11.

(Fastening member)
A bolt B1 and a nut N1 (fastening member) shown in FIG. 3 fasten the lid 2, the reinforcing members 51 and 52, and the floor panel F. The bolt B <b> 1 passes through the collar 61 welded to the reinforcing member 51, and the lower end of the shaft portion protrudes below the floor panel F. A nut N1 is screwed into a portion of the shaft portion of the bolt B1 that protrudes below the floor panel F. Note that the nut N1 may be welded to the lower surface of the floor panel F in advance. Detailed descriptions of the other bolts B2 to B4 and nuts N2 to N4 are omitted.

<Intake structure>
Referring to FIG. 2, electric device housing P having the above-described configuration is inserted into hole H, which is an opening provided between kick-up portion 5 a and rear floor panel 6, from vehicle compartment 30 side. It is inserted and fastened to the floor panel F, and the indoor duct 42 of the exhaust duct 41 is connected and assembled to a through hole 45 formed in the annular bulk 44. The cargo compartment side duct 43 of the exhaust duct 41 is connected to the through hole 45 of the annular bulk 44 from the cargo compartment 31 side.

  As shown in FIG. 8, the rear seat 9 disposed behind the kick-up portion 5 a is supported by an intake cover 25 whose lower surface is integrally formed with the upper portion of the electric device housing P, that is, the lid 2 and the lid 2. Has been.

  The inside of the passenger compartment 30 of the front floor panel 5 and the kick-up portion 5 a is covered with a trim 15 that is sandwiched between the lower surface of the rear seat 9 and the upper surface of the intake cover 25. That is, the trim 15 covers the front floor panel 5 and the inside of the passenger compartment 30 of the kick-up portion 5a, and the upper end portion extends to the lower surface of the rear seat 9 and is connected to the upper surface of the intake cover 25. The trim 15 is provided with an intake grill 16 for taking in air in the passenger compartment 30 at a position (front) facing the vertical wall 23 of the lid 2. That is, the vertical wall 23 is disposed in a projection area in which a portion of the vertical grill 23 is projected rearward. A gap C is provided between the flange 21 of the lid 2 and the back surface of the intake grill 16.

  As described above, the trim 15, the vertical wall 23 of the lid 2, and the flange 21 define a part of the space below the rear seat 9, thereby forming the first foreign material capturing portion 32. Further, below the flange 21, a second foreign material capturing part 33 is formed by being defined by the trim 15 and the kick-up part 5 a (front floor panel 5).

  Next, the operation of the present embodiment having the above configuration will be described with reference to FIG. The intake structure of the cooling structure for an electric device according to an embodiment of the present invention takes air in the passenger compartment 30 as cooling air from the intake grill 16 and supplies the air to the electric device housing P from the intake port 24a of the intake pipe 24. After the internal electric device D is cooled, it is exhausted from the exhaust duct 41 (see FIGS. 1 and 2) into the cargo compartment 31.

  As shown in FIG. 8, the air flow that is taken in from the intake grill 16 and goes straight to the rear of the vehicle collides with the vertical wall 23 of the lid 2 and changes the flow direction upward, and then the upper surface of the lid 2 and the intake cover 25 And is supplied into the electric device housing P from the intake port 24a of the intake pipe 24.

  At this time, even if foreign matter or liquid enters from the intake grille 16 together with air, the foreign matter or liquid is separated from the air and dropped because the air flow from the intake grille 16 always hits the vertical wall 23, It is captured by the first foreign material capturing unit 32. Further, a part of the foreign matter or liquid is further dropped (in the direction of arrow A) from the gap C between the flange 21 of the lid 2 and the back surface of the intake grill 16 and is captured by the second foreign matter catching portion 33.

  Accordingly, it is possible to prevent foreign matters, liquids, and the like from entering the electric device housing P. Furthermore, even if a part of the liquid flows in the direction of the intake pipe 24 (upward) according to the air flow, the intake pipe 24 protrudes from the ceiling portion 22 of the lid 2, so that the electric device is accommodated from the intake port 24 a through the lid 2. It does not enter the body P.

9 and 10 are cross-sectional views of a principal part of a modified example having a configuration for easily removing the foreign matter trapped by the first foreign matter trapping portion 32.
An intake grill 16 shown in FIG. 9 is detachably attached by a plurality of screws 17 in the vicinity of the upper end of the trim 15. Accordingly, the foreign matter captured by the first foreign matter catcher 32 can be easily removed by removing the intake grill 16 from the trim 15. In addition, it is not limited to the screw 17 and may be detachably attached by other fastening means such as a clip.

  In the trim 15 shown in FIG. 10, a hinge 18 is provided below the intake grill 16 so that a part of the trim 15 can be opened and closed together with the intake grill 16. As a result, the intake grill 16 can be tilted forward to remove the foreign matter captured by the first foreign matter capturing portion 32.

  Since the first and second foreign matter capturing portions 32 and 33 are formed only with conventional components without using dedicated components such as a shielding plate, not only the manufacturing cost is reduced, but also a shielding plate is installed. Space is unnecessary, and the interior space can be expanded accordingly, increasing the living performance. In addition, the removal of the foreign matter captured by the first and second foreign matter catching portions 32 and 33 can be achieved by simply removing the intake grille 16, tilting it, or removing the trim 15 to remove the rear seat 9 or the electric device housing P. It is not necessary to remove large parts such as the lid 2, and maintenance can be easily performed.

  Further, since the upper space of the intake pipe 24 is secured by the intake cover 25, the air flow path is not crushed by the rear seat 9, and a cross-sectional area necessary for intake is secured. Furthermore, the intake structure of the present embodiment does not include a dedicated intake duct unlike the conventional mechanism, and the air flow is achieved without using special parts by using the space under the rear seat 9 as an intake path. It is possible to form an intake passage with a small resistance at low cost.

  Further, even when the intake grill 16 is blocked, it is possible to intake air from the gap around the rear seat 9, and it is not necessary to provide an emergency intake hole as in the prior art, and the cost is reduced. Furthermore, the intake sound is reduced by the sound absorption effect of the rear seat 9. Further, the installation position of the intake grill 16 is not limited by the position of the intake pipe 24, and can be set at an arbitrary position, thereby improving the degree of freedom in design. In addition, even if the liquid enters the first and second foreign matter capturing portions 32 and 33, it can be dried from the body and the trim surface, and the safety to the high-pressure parts is increased.

  As described above, according to the cooling structure of the electric device D according to the present embodiment, the lid 2 includes the electric device cooling air intake port 24a formed behind the vertical wall 23, and the kick-up portion 5a. Is provided with a trim 15 in which the intake grill 16 is disposed, and the vertical wall 23 is disposed in a rear projection region in which at least a portion projects the intake grill 16 rearward, and the vertical wall 23, the trim 15, and Since the first foreign matter capturing part 32 is formed by the flange 21, the foreign matter and liquid that may enter with the air can be removed by buffering the air flow on the vertical wall 23 set in the air flow path, Intrusion of foreign matter or liquid into the intake port 24a can be prevented. Further, the space surrounded by the vertical wall 23, the flange 21, and the trim 15 is the first foreign matter trapping part 32 that traps the invading foreign matter and liquid, so that the foreign matter trapping part can be reduced without increasing the number of parts. Thus, cost reduction can be achieved.

  Further, the lid 2 is provided with an intake cover 25 that is integrally formed from the lid 2 and covers the upper side of the intake port 24a, and the rear seat 9 is held by the intake cover 25 and the lid 2, so that the rear seat The surface rigidity of the lid 2 that holds 9 can be improved, and the rear seat 9 can be securely attached. In addition, a space can be secured above the intake port 24a, and air from the vehicle interior 30 can be reliably supplied.

  Further, a gap C is provided between the intake grill 16 and the flange 21, and the second foreign matter catching portion 33 is formed by the trim 15 and the kick-up portion 5a via the gap C. Therefore, the second foreign matter catching portion 33 is formed. The removal work of the foreign matter captured by 33 can be performed only by removing the trim 15, and the foreign matter can be removed without increasing the number of parts separately. Further, the trim 15 is not limited to the resin trim, and a carpet may be used. The second foreign matter capturing unit 33 can function as a silencer, and intake noise can be reduced.

  Further, since the intake pipe 24 protrudes from the ceiling portion 22 of the lid 2, it is prevented from entering the electric device housing P from the intake port 24 a through the lid 2.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. Although the hybrid vehicle has been described as the application vehicle, the present invention is not limited to this, and may be, for example, an electric vehicle using only a motor as a drive source.

1 Case 2 Lid (lid member)
5 Front floor panel (floor panel)
5a Kick-up part 6 Rear floor panel (floor panel)
9 Rear seat 12 Upper flange (mounting flange)
13 Lower flange (mounting flange)
15 Trim 16 Intake grill 21 Flange 22 Ceiling (upper surface)
23 Vertical wall 24 Intake pipe 24a Inlet 25 Intake cover 30 Car compartment 32 First foreign matter catching portion 33 Second foreign matter catching portion C Gap D Electric device F Floor panel H Hole (opening)
P Electric device container (electric device storage part)

Claims (4)

A rear seat provided behind the kick-up portion formed to stand up from the front floor panel;
Below the rear seat, an opening that opens between the kick-up portion and the rear floor panel;
A case for storing an electric device and an electric device storage portion having a lid member for covering the case and inserted into the opening,
The case includes a mounting flange that can be attached to the kick-up portion and the rear floor panel,
The lid member includes a flange that can be attached to the kick-up portion and the rear floor panel via the attachment flange of the case.
A cooling structure for an electric device that cools the electric device by supplying air in a vehicle interior,
The lid member includes an air inlet for cooling the electric device formed behind the vertical wall on which the flange is provided,
The kick-up portion is trimmed with an intake grille,
The vertical wall is disposed in a projection region at least a part of which projects the intake grille backward,
A cooling structure for an electric device, wherein the first foreign material capturing part is formed by the vertical wall, the trim, and the flange. The electrical device cooling structure according to claim 1,
An air intake cover that is integrally formed from the lid member and covers the upper side of the air intake port,
The cooling structure for an electric device, wherein the rear seat is held by the intake cover and the lid member. A cooling structure for an electrical device according to claim 1 or 2,
A gap is provided between the intake grill and the flange,
A cooling structure for an electric device, wherein a second foreign matter capturing part is formed by the trim and the kick-up part through the gap. A cooling structure for an electric device according to any one of claims 1 to 3,
The intake port is formed by an intake pipe penetrating the upper surface of the lid member,
The cooling structure for an electric device, wherein the intake port protrudes from an upper surface of the lid member.

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