JP2016066558A - Vent hole cover for battery unit box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To waterproof a battery within a battery box by preventing water from being infiltrated from a box vent hole into the battery box even when a collision body collides with a cover panel.SOLUTION: A hybrid unit box 10 includes a battery box 12 and a box cover 13. Outside of a side plate 39 at a left side of the battery box 12, an intake port cover 40 is fixed so as to cover an intake port 28 from the outside. The intake port cover 40 is integrally formed from a filter supporting plate part 45, a pair of front and rear protruding plate parts 46a and 46b and an intake duct part 47. An intake path 48 of the intake duct part 47 continuously extends downwards from the intake port 28 and is opened. A side plate part 47b of the intake duct part 47 confronts the intake port 28 at a position separated from the intake port 28 to the outside in a vehicle width direction. Distal ends of the front and rear protruding plate parts 46a and 46b are disposed at substantially the same positions as the side plate part 47b of the intake duct part 47 in the vehicle width direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vent cover of a battery unit box.

  Patent Document 1 describes a ventilation structure for a battery box of a large-sized route bus of a hybrid vehicle. The bus includes a battery unit on the ceiling of the vehicle. The battery unit includes a metal battery box in which a battery is housed, a resin waterproof cover that covers the entire battery box, and the like. A slight gap is formed between the lower end of the waterproof cover and the roof portion of the vehicle. An intake port is formed in the left side plate of the battery box, and an intake duct is attached corresponding to the intake port. An exhaust port is formed in the right side plate of the battery box, and an exhaust duct is provided outside the exhaust port. The intake duct and the exhaust duct prevent water droplets such as rain water and washing water from entering the battery box.

JP 2009-154826 A

  In the ventilation structure of a battery box described in Patent Document 1, an air intake duct and an exhaust duct (hereinafter simply referred to as a duct) provided in an air inlet and an exhaust outlet (box vent) of the battery box are used to connect the inside of the battery box with the air vent. Prevents intrusion of water droplets such as rain water and washing water. However, when the ventilation structure of the battery box described in Patent Document 1 is applied to a vehicle such as a truck in which the battery box is disposed on the outer side in the vehicle width direction of the side frame of the vehicle, another vehicle or the like contacts the side portion of the vehicle. When this happens, the resin waterproof cover (cover panel) may be damaged, causing cracks in the cover panel, and the cover panel may be pushed inward in the vehicle width direction to contact the duct, causing the duct to be damaged. is there. If the duct breaks and the duct cracks, etc., water that has entered the cover panel from the crack in the cover panel will enter the duct from the crack of the duct and enter the duct during the rain or car wash. There is a risk of entering the battery box.

  Therefore, the present invention provides a vent cover that can prevent water from entering the battery box from the box vent and waterproof the battery inside the battery box even when a collision object collides with the cover panel. The purpose is to provide.

  In order to solve the above-described problems, the present invention provides a box outer wall portion formed by a cover panel that is formed with a box vent formed in a box outer wall portion on one side of a battery box that houses a battery, and is spaced apart from the box outer wall portion. Is a vent cover that is disposed outside the box vent of the battery unit box and is fixed to the outer wall of the box, and includes a duct portion and a protruding plate portion. The duct portion has a plate portion that is spaced apart from the box vent and faces the box vent, and divides an air passage that extends in a direction crossing the direction toward the cover panel continuously from the box vent. Projects toward the cover panel from the outer wall of the box. The protruding plate portion is integrally formed with the duct portion, is disposed outside the duct portion, and protrudes from the box outer wall portion toward the cover panel.

  In the above configuration, the vent cover covers the box vent, and the duct portion of the vent cover has a plate portion that is spaced apart from the box vent. In other words, the box vent is also covered by the plate part of the duct part inside the cover panel in addition to the cover panel. The waterproofness of the battery can be increased. For example, a collision body collides with the cover panel from the outside, a crack is generated in the resin cover panel, and water enters the space between the cover panel and the outer wall of the box (hereinafter referred to as the cover inner space). However, since the box vent is covered with the plate part of the duct part and is not exposed to the outside, the plate part of the duct part can prevent water that has entered the cover inner space from being directly applied to the box vent hole. it can. Further, the air passage inside the duct portion extends in a direction intersecting with the direction toward the cover panel continuously from the box vent. That is, since the ventilation path does not open to the cover panel side, water hardly enters the ventilation path of the duct portion from the cover panel side even if the cover panel is cracked. Therefore, even if the cover panel is damaged, water can be prevented from entering the battery box from the box vent.

  Further, since the vent cover has a protruding plate portion that protrudes from the outer wall portion of the box toward the cover panel side, for example, a collision body collides with the cover panel from the outside, and the cover panel is pressed toward the outer wall portion side of the box. When it is done, the movement of the cover panel to the box outer wall side can be suppressed by the protruding plate part. For this reason, when the cover panel comes into contact with the protruding plate portion before the duct portion, the movement of the cover panel toward the box outer wall portion side is suppressed by the protruding plate portion, and the duct portion is protected from damage or deformation. be able to. Further, even when the cover panel comes into contact with the duct portion before the projecting plate portion, when the cover panel comes into contact with the projecting plate portion thereafter, the movement of the cover panel to the box outer wall portion side causes the projecting plate to move. It is restrained by the part, and damage and deformation of the duct part can be kept small. Therefore, even if a collision object collides with the cover panel from the outside, the duct part is not easily damaged. Therefore, even if the cover panel is damaged and water enters the cover inner space, the duct part causes the battery box to pass through the box vent. It is possible to prevent water from entering the inside.

  Further, since the protruding plate portion is integrally formed with the duct portion, the rigidity of the duct portion can be increased by the protruding plate portion. For this reason, since the deformation of the duct part can be suppressed by the protruding plate part, when the colliding body collides with the cover panel, the duct part is prevented from being damaged, and the duct part prevents water from flowing from the box vent to the battery box. Intrusion can be prevented.

  Therefore, even if a collision body collides with the cover panel, water can be prevented from entering the battery box from the box vent and the battery inside the battery box can be waterproofed.

  In addition, even if the cover panel is damaged, the battery can be waterproofed by the vent cover, so the cover panel can be made of resin. In this case, the cover panel is lighter than the metal cover panel. can do.

  ADVANTAGE OF THE INVENTION According to this invention, even if a colliding body collides with a cover panel, the penetration | invasion of the water from the box vent to the inside of a battery box can be prevented, and the battery inside a battery box can be waterproofed.

It is an external appearance perspective view of the hybrid unit box of this embodiment. It is II-II arrow sectional drawing of FIG. It is a disassembled perspective view of the hybrid unit box of the state which removed the box cover. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 1. It is a perspective view of an exhaust port cover, (a) shows the state seen from the back of the vehicle width direction outer side, (b) shows the state seen from the back of the vehicle width direction inner side. It is a perspective view of an air inlet cover, (a) shows the state seen from the back of the vehicle width direction outside, and (b) shows the state seen from the back of the vehicle width direction inside. It is the perspective view which looked at the box cover from the inside.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Moreover, in the following description, the left-right direction means the left-right direction with the vehicle facing forward.

  As shown in FIG. 1, a hybrid unit box (battery unit box) 10 of this embodiment is mounted on a vehicle 1 that is a hybrid electric vehicle. The vehicle 1 includes a body frame 2 and two stays 3 at the front and rear.

  The vehicle body frame 2 includes a pair of left and right side members 4 that extend in the front-rear direction, a first cross member 5 that extends in the vehicle width direction and connects the left and right side members 4, and a vehicle width behind the first cross member 5. The second cross member 6 extends in the direction and connects the left and right side members 4 to each other.

  As shown in FIGS. 2 and 3, the stay 3 includes a vertical portion 3 a that extends in a substantially vertical direction and a horizontal portion 3 b that is bent outward from the lower end of the vertical portion 3 a in the vehicle width direction and extends in a substantially horizontal direction. It is integrally formed in a letter shape. A bolt hole (not shown) is formed at the upper end of the vertical portion 3a. The front and rear stays 3 are at substantially the same height position at two front and rear positions on the outer side surface of the side member 4 on the left side in the vehicle width direction between the front wheel (not shown) and the rear wheel (not shown) of the vehicle 1. They are spaced apart from each other in the front-rear direction, and are fixed to the side members 4 by bolts 7 that pass through the bolt holes in a state where the vertical portions 3a extend downward from the lower end edge of the side members 4. An angle 37 extending in the front-rear direction across both stays 3 is fixed to the lower surface of the inner end of the horizontal part 3 b of the front-rear stay 3. A cover support 38 for supporting the box cover 13 described later is fixed to the angle 37 at three positions in the front-rear direction of the angle 37 (only two positions are shown in FIG. 3) so as to extend downward from the angle 37. The

  As shown in FIG. 2, the hybrid unit box 10 includes a battery box 12 and a box cover 13 fixed to the battery box 12, and the battery box 12 is fixed to the vehicle 1 by being fixed to the front and rear stays 3. Is done. A first accommodation space 14 is defined inside the battery box 12. In addition, a second housing space 15 is defined below the battery box 12 with the box cover 13 fixed to the battery box 12. In FIG. 2, illustration of the battery-related device group accommodated in the first accommodation space 14 and the second accommodation space 15 of the hybrid unit box 10 is omitted.

  As illustrated in FIG. 3, the first battery-related device group is accommodated in the first accommodation space 14. The first battery-related device group in the present embodiment is a device group that is highly required to be waterproof and does not have a waterproof property, and includes a hybrid battery (battery) 11, a battery fan 16, a fan duct 20, and a battery. A control unit 17, a junction pallet 18, a DC-DC converter 19 and the like are included. The hybrid battery 11 is, for example, a lithium ion battery, and supplies power to a motor generator (not shown) via an inverter when the vehicle 1 is started or accelerated. The hybrid battery 11 stores the electric power generated by the motor generator when the vehicle 1 is decelerated or the like via an inverter. The battery fan 16 takes in air for cooling the hybrid battery 11 and the like from the outside of the battery box 12 into the first housing space 14, and takes the cooled air from the first housing space 14 through the fan duct 20. Discharge outside the box 12. The battery control unit 17 mainly controls the hybrid battery 11. The junction pallet 18 switches the flow of electricity. The DC-DC converter 19 steps down a high-voltage direct current.

  The second storage space 15 stores a second battery-related device group. The second battery-related device group in the present embodiment is a device group that has a low necessity for waterproofing or that is waterproof, and includes the inverter 21, the radiator 22, the radiator fan 23, the water pump 24, and the like. Including. The inverter 21 performs conversion between a high-voltage direct current and a three-phase alternating current. The radiator 22 performs heat exchange between cooling water that cools the inverter 21 and the like and air. The radiator fan 23 circulates air through the core 22 a of the radiator 22. A pipe 25 is connected to the water pump 24 to circulate the cooling water in the pipe 25.

  The battery box 12 has a box-shaped upper case 26 that opens downward and a box-shaped lower case 27 that opens upward, and the opening sides of both cases 16 and 17 are fixed to each other and will be described later. Except for the intake port 28 and the exhaust port 29, it is formed in a substantially sealed box shape. The battery box 12 is placed above the horizontal portion 3 b of the front and rear stays 3, and is fixed to the stay 3 by front and rear bands 30 provided on the front and rear stays 3, respectively. The band 30 is a metal plate-like body, extends from the upper end of the vertical portion 3 a of the stay 3 to the outside in the vehicle width direction along the upper surface of the battery box 12, and extends at the outer end in the vehicle width direction of the battery box 12. It curves downward and extends downward along the outer side surface of the battery box 12 in the vehicle width direction, and is fixed to the outer end portion of the horizontal portion 3b of the stay 3 in the vehicle width direction.

  The upper case 26 is integrally formed in a box shape opened downward by a front plate portion 26a (see FIG. 2), a rear plate portion 26b, left and right side plate portions 26c and 26d (see FIG. 2), and an upper plate portion 26e. The A plurality (five in this embodiment) of plate-like mounting brackets 32 each having a bolt hole 31 for fixing the box cover 13 are fixed to the outer end in the vehicle width direction of the upper plate portion 26e. At the lower end edge of the upper case 26, a plate-like flange that extends in a substantially horizontal direction from the lower end edges of the front plate portion 26a, the rear plate portion 26b, and the left and right side plate portions 26c, 26d toward the outside of the upper case 26. The part 33 is integrally formed. A plurality of bolt holes 34 are formed in the flange portion 33. The left side plate portion 26 c of the upper case 26 discharges air from the inlet (box vent) 28 for sucking air into the first housing space 14 by the battery fan 16 and the first housing space 14. An exhaust port (box vent) 29 is formed (see FIG. 4).

  The intake port 28 is a rectangular opening, and is disposed between the front and rear bands 30 of the left side plate portion 26c of the upper case 26, and passes through the left side plate portion 26c in the vehicle width direction in the first direction. The accommodation space 14 communicates with the outside. The exhaust port 29 is a rectangular opening, and is disposed in front of the front band 30 in the left side plate portion 26c of the upper case 26 and at substantially the same height as the intake port 28. The left side plate portion The first housing space 14 is communicated with the outside through the vehicle 26c in the vehicle width direction. Inside the exhaust port 29, an opening (see FIG. 3) of the fan duct 20 for guiding the air that has cooled the hybrid battery 11 and the like to the exhaust port 29 is arranged.

  The lower case 27 is a box that opens upward by a front plate portion 27a (see FIG. 2), a rear plate portion 27b, left and right side plate portions 27c and 27d (see FIG. 2), and a lower plate portion 27e (see FIG. 2). Are integrally formed. At the upper edge of the lower case 27, a plate-like flange that extends in a substantially horizontal direction from the upper edge of each of the front plate portion 27a, the rear plate portion 27b, and the left and right side plate portions 27c, 27d toward the outside of the lower case 27. The part 35 is integrally formed. A plurality of bolt holes 36 are formed in the flange portion 35.

  In the battery box 12, the upper case 26 and the lower case 27 have a plurality of bolt holes 34 and 36 in a state where the lower surface of the flange portion 33 of the upper case 26 and the upper surface of the flange portion 35 of the lower case 27 are in close contact with each other. It is fixed by a bolt (not shown) to be inserted, and is formed in a box shape that is substantially sealed except for the intake port 28 and the exhaust port 29. The left side (one side) in the vehicle width direction of the first housing space 14 inside the battery box 12 is partitioned into a left side plate part (box outer wall part) 39 (see FIG. 2) of the battery box 12. The left side plate portion 36 of the battery box 12 includes a left side plate portion 26 c of the upper case 26 and a left side plate portion 27 c of the lower case 27. From the left side plate portion 39 of the battery box 12, flange portions 33 and 35 of the upper case 26 and the lower case 27 extend in the front-rear direction and project outward in the vehicle width direction.

  As shown in FIGS. 3 and 4, a metal inlet cover (vent cover) 40 and a metal exhaust cover (vent cover) 41 are fixed to the upper case 26 of the battery box 12. The The intake port cover 40 is disposed outside the intake port 28 of the left side plate portion 26c of the upper case 26, and is provided on the peripheral portion of the intake port 28 of the left side plate portion 26c so as to cover the intake port 28 from the outside in the vehicle width direction. It is fixed by a pair of front and rear bolts 42. A filter (not shown) is provided between the left side plate portion 26c and the air inlet cover 40, and the filter allows passage of air sucked into the first accommodating space 14 and from the air to dust and the like. Remove impurities. The filter is provided so as to be replaceable with respect to the battery box 12 and is periodically replaced. The exhaust port cover 41 is disposed outside the exhaust port 29 of the left side plate portion 26c of the upper case 26, and is disposed on the periphery of the exhaust port 29 of the left side plate portion 26c so as to cover the exhaust port 29 from the outside in the vehicle width direction. It is fixed by a pair of front and rear bolts 43.

  As shown in FIG. 4, FIG. 5A, and FIG. 5B, the air inlet cover 40 is a plate-like filter support plate portion 45 that extends in the front-rear direction along the left side plate portion 26 c of the upper case 26. A pair of front and rear projecting plate portions 46a and 46b that bend from both front and rear edges of the filter support plate portion 45 and project outward in the vehicle width direction, and an intake duct projecting outward from the filter support plate portion 45 in the vehicle width direction It is integrally formed with the part (duct part) 47.

  Two rectangular openings 44 are formed in the filter support plate 45 side by side in the front-rear direction. The two openings 44 of the filter support plate 45 are arranged at positions corresponding to the intake ports 28, and the filter support plate 45 covers the periphery of the intake port 28 of the upper case 26 from the outside in the vehicle width direction. The upper end edges of the front and rear openings 44 are respectively arranged at substantially the same height position as the upper end edge of the intake opening 28, and the lower end edges of the front and rear openings 44 are respectively arranged at substantially the same height position as the lower end edge of the intake opening 28. Is done. The front end edge of the front opening 44 is disposed at substantially the same position in the front-rear direction as the front end edge of the intake port 28, and the rear end edge of the rear opening 44 is substantially the same in the front-rear direction as the rear end edge of the intake port 28. Placed in position.

  The intake duct portion 47 integrally includes an upper plate portion 47a, a side plate portion (plate portion) 47b, a front plate portion 47c, and a rear plate portion 47d. The intake duct portion 47 continuously extends downward from the intake port 28 and extends downward. An air intake passage (air passage) 48 that opens toward the inside is partitioned inside, and protrudes from the left side plate portion 39 of the battery box 12 outward in the vehicle width direction. That is, the intake passage 48 is continuously extended from the intake port 28 in a direction (downward) intersecting with a direction toward the side cover portion 13c of the box cover 13 on the outer side in the vehicle width direction, which will be described later, and toward the side cover portion 13c. Open in the direction crossing the direction (downward). The upper plate portion 47a of the intake duct portion 47 is fixed by welding or the like above the upper end edge of the front and rear openings 44 on the outer side surface in the vehicle width direction of the filter support plate portion 45, and toward the lower outside in the vehicle width direction. Extend. The upper plate portion 47a is curved so as to bulge upward. The side plate portion 47b continuously extends downward from the leading edge of the upper plate portion 47a and faces the intake port 28 at a position spaced from the intake port 28 to the outside in the vehicle width direction. The front plate portion 47c is fixed to the front side of the front end edge of the opening 44 on the front side of the filter support plate portion 45 in the vehicle width direction, and is fixed to the rear side of the front projection plate portion 46a by welding or the like. It extends to the outside, and its tip continues to the front edge of the upper plate portion 47a and the side plate portion 47b. The rear plate portion 47d is fixed by welding or the like behind the rear end edge of the rear opening 44 on the outer side surface in the vehicle width direction of the filter support plate portion 45 and ahead of the rear protruding plate portion 46b. It extends outward in the vehicle width direction, and the leading ends thereof are continuous with the rear edge of the upper plate portion 47a and the side plate portion 47b. The upper plate portion 47a of the intake duct portion 47 is above the intake passage 48, the side plate portion 47b is outside the intake passage 48 in the vehicle width direction, the front plate portion 47c is in front of the intake passage 48, and the rear plate portion 47d is the intake passage. The rear of 48 is divided.

  The front and rear protruding plate portions 46a and 46b extend in the vertical direction outside the intake duct portion 47 (both front and rear edges of the filter support plate portion 45) and outward from the left side plate portion 39 of the battery box 12 in the vehicle width direction. Each protrudes. The front and rear projecting plate portions 46a and 46b have distal ends disposed at substantially the same position in the vehicle width direction as the side plate portion 47b of the intake duct portion 47, respectively.

  The filter support plate 45 is provided between the front plate 47c of the intake duct 47 and the front protruding plate 46a, and between the rear plate 47d of the intake duct 47 and the rear protruding plate 46b. Bolt holes 49 are formed. The inlet cover 40 is a bolt 42 through which a bolt hole 49 is inserted into the left side plate portion 26 c of the upper case 26 with the filter sandwiched between the filter support plate portion 45 and the left side plate portion 26 c of the upper case 26. (See FIG. 4).

  As shown in FIG. 4, FIG. 6A, and FIG. 6B, the exhaust port cover 41 includes a flat plate portion 50 that extends in the front-rear direction along the left side plate portion 26 c of the upper case 26, and the flat plate portion 50. A pair of front and rear projecting plate portions 51a and 51b that bend from both front and rear edges of the front and rear and project outward in the vehicle width direction, and an exhaust duct portion (duct portion) 52 projecting outward from the flat plate portion 50 in the vehicle width direction. It is formed.

  The flat plate portion 50 is formed with a rectangular opening 53 having substantially the same size as the exhaust port 29. The central part in the front-rear direction of the opening 53 is disposed in front of the central part in the front-rear direction of the flat plate part 50. The opening 53 of the flat plate portion 50 is disposed at a position corresponding to the exhaust port 29, and the flat plate portion 50 covers the periphery of the exhaust port 29 of the upper case 26 from the outside in the vehicle width direction.

  The exhaust duct portion 52 integrally includes an upper plate portion 52a, a side plate portion (plate portion) 52b, a front plate portion 52c, and a rear plate portion 52d, and extends continuously from the exhaust port 29 and extends downward (in the vehicle width direction). The exhaust path (ventilation path) 54 that extends downward and opens downward is partitioned inside and protrudes from the left side plate portion 39 of the battery box 12 outward in the vehicle width direction. That is, the exhaust passage 54 extends continuously from the exhaust port 29 in a direction (downward) intersecting with a direction toward the side cover portion 13c of the box cover 13 on the outer side in the vehicle width direction, which will be described later, and toward the side cover portion 13c. Open in the direction crossing the direction (downward). The upper plate portion 52a of the exhaust duct portion 52 is fixed by welding or the like above the upper end edge of the opening 53 on the outer surface in the vehicle width direction of the flat plate portion 50, and extends downward on the outer side in the vehicle width direction. The upper plate portion 52a is curved so as to bulge upward. The side plate portion 52b extends downward continuously from the leading edge of the upper plate portion 52a, and faces the exhaust port 29 at a position spaced from the exhaust port 29 to the outside in the vehicle width direction. The front plate portion 52c is fixed to the front side edge of the opening 53 on the outer side surface in the vehicle width direction of the flat plate portion 50 and rearward of the front projection plate portion 51a by welding or the like, and extends outward in the vehicle width direction. The leading ends are continuous with the front end edges of the upper plate portion 52a and the side plate portion 52b. The rear plate portion 52d is fixed by welding or the like to the rear side of the rear end edge of the opening 53 on the outer side surface in the vehicle width direction of the flat plate portion 50 and forward of the rear side protruding plate portion 51b. The front end of the upper plate 52a and the side plate 52b is continuous with the rear edge of the upper plate 52a. The upper plate portion 52a of the exhaust duct portion 52 is above the exhaust passage 54, the side plate portion 52b is outside the vehicle width direction of the exhaust passage 54, the front plate portion 52c is in front of the exhaust passage 54, and the rear plate portion 52d is the exhaust passage. The rear of 54 is divided.

  The front and rear projecting plate portions 51a and 51b extend in the vertical direction outside the exhaust duct portion 52 (both front and rear edges of the flat plate portion 50) and project outward from the left side plate portion 39 of the battery box 12 in the vehicle width direction. To do. The front and rear projecting plate portions 51a and 51b have distal ends disposed at substantially the same positions in the vehicle width direction as the side plate portions 52b of the exhaust duct portion 52, respectively.

  The flat plate portion 50 has bolt holes between the front plate portion 52c of the exhaust duct portion 52 and the front protruding plate portion 51a, and between the rear plate portion 52d of the exhaust duct portion 52 and the rear protruding plate portion 51b. 55 is formed. The exhaust port cover 41 is fixed to the left side plate portion 26c of the upper case 26 by bolts 43 (see FIG. 4) that pass through the bolt holes 55.

  2 and 7, the box cover 13 includes a plate-shaped front cover portion 13a, a plate-shaped rear cover portion 13b, and a plate-shaped side cover portion (cover panel) 13c on the outer side in the vehicle width direction. A resin cover integrally formed with the plate-like lower cover portion 13d, which opens inward and upward in the vehicle width direction and is fixed to the plurality of mounting brackets 32 and the cover support 38 of the battery box 12. . As will be described later, the plate portions 13a to 13d of the box cover 13 define the front side, the rear side, the vehicle width direction outer side (left side), and the lower side of the second accommodation space 15 below the battery box 12. The upper side of the second accommodation space 15 below the battery box 12 is partitioned by the lower plate portion 27e of the lower case 27 of the battery box 12, and the second accommodation space 15 is directed to the inner side (right side) in the vehicle width direction. It is open.

  The front cover portion 13a stands in front of the front plate portion 27a of the lower case 27 of the battery box 12 and is obliquely rearward from the substantially rectangular upper region 58 that covers the front plate portion 27a from the front and the lower end edge of the upper region 58. And a lower region 59 extending downward. In the lower region 59 of the front cover portion 13 a, a pair of left and right beads 60 that are bent so as to be recessed obliquely rearward and upward extend obliquely in the front-rear direction along the lower region 59. The lower region 59 of the front cover portion 13 a defines the front side of the second accommodation space 15 below the battery box 12.

  The lower cover portion 13 d is formed in a substantially rectangular shape, extends substantially horizontally rearward from the lower end edge of the lower region 59 of the front cover portion 13 a, and defines the lower side of the second accommodation space 15 below the battery box 12. To do. In the lower cover portion 13d, a pair of left and right beads 61 that are bent so as to be recessed upwardly extend rearward from the left and right beads 60 in the lower region 59 of the front cover portion 13a. A plurality (three in this embodiment) of bolt holes 62 are formed at positions corresponding to the plurality of cover supports 38 at the inner end in the vehicle width direction of the lower cover portion 13d. The plurality of cover support members 38 are fixed by bolts (not shown) that pass through the plurality of bolt holes 62.

  The rear cover portion 13b is formed in a substantially rectangular shape, rises from the rear end edge of the lower cover portion 13d, extends to the vicinity of the flange portion 35 of the lower case 27, and covers the rear plate portion 27b of the lower case 27 from the rear. A region below the region facing the rear plate portion 27 b of the lower case 27 in the rear cover portion 13 b defines the rear side of the second accommodation space 15 below the battery box 12.

  The side cover portion 13c includes a bead 63 extending in the front-rear direction, a radiator fan intake port 64 constituted by a plurality of (24 in this embodiment) openings, and a plurality (in this embodiment, six in the present embodiment). ) Ribs 65a to 65f, are arranged on the outer side in the vehicle width direction than the left side plate portion 39 of the battery box 12, and stand along the outer edge in the vehicle width direction of the lower cover portion 13d. The front end edge of the side cover portion 13c continues to the outer end edge in the vehicle width direction of the front cover portion 13a, and the rear end edge of the side cover portion 13c continues to the outer end edge in the vehicle width direction of the rear cover portion 13b. The upper end edge of the side cover portion 13 c is disposed above the left side plate portion 39 of the battery box 12. That is, the side cover portion 13 c of the box cover 13 covers the entire area of the left side plate portion 39 of the battery box 12 from the outside in the vehicle width direction. The region below the region facing the left side plate portion 39 of the battery box 12 in the side cover portion 13 c defines the left side of the second accommodation space 15 below the battery box 12. A plurality of bolt holes (not shown) are formed at positions corresponding to the bolt holes 31 of the plurality of mounting brackets 32 at the upper end edge of the side cover portion 13c, and the bolt holes and the bolt holes 31 of the mounting bracket 32 are inserted through the bolt holes 31. The side cover 13c is fixed to the battery box 12 by the bolts 66 (see FIGS. 1 and 2). A space (hereinafter referred to as a cover inner space) is defined between the side cover portion 13 c and the left side plate portion 39 of the battery box 12. The front ends (outer ends in the vehicle width direction) of the flange portions 33 and 35 of the battery box 12, the front ends of the protruding plate portions 46 a and 46 b of the intake port cover 40, and the protruding plate portions 51 a and 51 b of the exhaust port cover 41. A gap that allows air flow is provided between the tip and the side cover portion 13c.

  The bead 63 of the side cover portion 13c is disposed below the flange portions 33 and 35 of the battery box 12, and is bent so as to be recessed toward the left side plate portion 27c side of the lower case 27, thereby forming the side cover portion 13c. It extends over the front and back and reinforces the side cover portion 13c. A gap is provided between the inner end of the bead 63 in the vehicle width direction and the left side plate 27c of the lower case 27 to allow air flow.

  As shown in FIGS. 2 and 7, the radiator fan intake port 64 is formed in a region below the bead 63 in the side cover portion 13 c, and the second housing space 15 and the side cover portion below the battery box 12. It communicates with the outside of 13c.

  As shown in FIGS. 4 and 7, each of the plurality of ribs 65a to 65f is a plate-like body, and is integrally formed with the side cover portion 13c, from the side cover portion 13c to the inside in the vehicle width direction (of the battery box 12). The side cover portion 13c is reinforced by projecting toward the left side plate portion 39 side and extending in the vertical direction. Between the tips of the plurality of ribs 65 a to 65 f and the left side plate portion 26 c of the upper case 26, a gap allowing air flow is provided.

  The rib 65a is disposed in front of the front projecting plate portion 51a of the exhaust port cover 41 and in the vicinity of the front projecting plate portion 51a, and extends in the vertical direction. The leading end of the rib 65 a protrudes toward the left side plate portion 39 of the battery box 12 rather than the leading end of the front protruding plate portion 51 a of the exhaust port cover 41. The rear surface of the rib 65a and the front surface of the protruding plate portion 51a on the front side of the exhaust port cover 41 have regions facing each other.

  The rib 65b is disposed behind the protruding plate portion 51b on the rear side of the exhaust port cover 41 and in the vicinity of the protruding plate portion 51b on the rear side, and extends in the vertical direction. The leading ends of the ribs 65 b protrude toward the side plate 39 on the left side of the battery box 12 rather than the leading ends of the protruding plates 51 b on the rear side of the exhaust port cover 41. The front surface of the rib 65b and the rear surface of the protruding plate portion 51b on the rear side of the exhaust port cover 41 have regions facing each other.

  The rib 65c is disposed in front of the front projecting plate portion 46a of the air inlet cover 40 and in the vicinity of the front projecting plate portion 46a, and extends in the vertical direction. The tip of the rib 65c protrudes toward the side plate 39 on the left side of the battery box 12 rather than the tip of the protruding plate 46a on the front side of the air inlet cover 40. The rear surface of the rib 65c and the front surface of the projecting plate portion 46a on the front side of the air inlet cover 40 have regions facing each other.

  The rib 65d is arranged behind the protruding plate portion 46b on the rear side of the intake port cover 40 and in the vicinity of the protruding plate portion 46b on the rear side, and extends in the vertical direction. The leading end of the rib 65d protrudes toward the side plate 39 on the left side of the battery box 12 from the leading end of the protruding plate part 46b on the rear side of the intake port cover 40. The rear surface of the rib 65d and the front surface of the protruding plate portion 46b on the rear side of the intake port cover 40 have regions facing each other. The rib 65e is arrange | positioned back rather than the rib 65d among the side cover parts 13c, and is extended in an up-down direction. The rib 65f is disposed behind the rib 65e in the side cover portion 13c and extends in the vertical direction.

  Air for cooling the hybrid battery 11 and the like in the first accommodating space 14 is mainly supplied from between the battery box 12 and the edge of the box cover 13 (for example, the upper edge of the side cover portion 13c) by the battery fan 16. The air flows into the cover inner space, flows through the intake passage 48 of the intake duct portion 47 of the intake cover 40, and is sucked into the first accommodation space 14 from the intake port 28 of the battery box 12 through the filter. The air discharged from the exhaust port 29 of the battery box 12 to the outside of the first housing space 14 flows through the exhaust path 54 of the exhaust duct portion 52 of the exhaust port cover 41 and is discharged into the cover inner space, and the battery box 12. And the edge of the box cover 13 are discharged to the outside of the hybrid unit box 10.

  Air for cooling the inverter 21 and the like in the second housing space 15 flows into the second housing space 15 mainly from the radiator fan air inlet 64 of the box cover 13 by the radiator fan 23, and the second housing space. It is discharged to the lower side of the vehicle 1 inside 15 in the vehicle width direction.

  In the hybrid unit box 10 configured as described above, the hybrid battery 11 is housed in the first housing space 14 of the battery box 12, and the battery box 12 is substantially sealed except for the air inlet 28 and the air outlet 29. In the event of rainfall or car washing, water intrusion into the first accommodation space 14 can be suppressed.

  Further, since the left side plate portion 39 of the battery box 12 is covered by the side cover portion 13c of the box cover 13 from the outer side in the vehicle width direction and is not exposed to the outside, water is left on the left side of the battery box 12 during rain or car wash. The side cover portion 13c can prevent the side plate portion 39 from being directly applied. For this reason, it is possible to prevent water from entering from the intake port 28 and the exhaust port 29 of the left side plate portion 39 of the battery box 12. Further, the radiator fan air intake 64 of the side cover portion 13 c is provided below the battery box 12. That is, the radiator fan intake port 64 of the side cover portion 13 c does not face the left side plate portion 39 of the battery box 12, so water that has entered the inside of the side cover portion 13 c from the radiator fan intake port 64 is left of the battery box 12. The side plate portion 39 is difficult to be applied.

  The intake duct portion 47 of the intake port cover 40 has a side plate portion 47b that is spaced outward from the intake port 28 in the vehicle width direction and faces the intake port 28, and covers the intake port 28 from the outer side in the vehicle width direction. The exhaust duct portion 52 of the exhaust port cover 41 has a side plate portion 52b that is spaced outward from the exhaust port 29 in the vehicle width direction and faces the exhaust port 29, and covers the exhaust port 29 from the outer side in the vehicle width direction. In other words, in addition to the box cover 13, the intake port 28 and the exhaust port 29 are located on the inner side in the vehicle width direction of the box cover 13 and the side plates of the intake duct portion 47 and the exhaust duct portion 52 (hereinafter referred to as both duct portions 47 and 52). Since the portions 47b and 52b are also covered from the outside in the vehicle width direction, the waterproof property of the hybrid battery 11 during rain or car wash can be enhanced. For example, a collision body comes into contact with the box cover 13 from the outside in the vehicle width direction (including a collision), a crack is generated in the side cover portion 13c of the resin box cover 13, and water easily enters the cover inner space. However, since the intake port 28 and the exhaust port 29 are covered with the side plate portions 47b and 52b of the duct portions 47 and 52 and are not exposed to the outside, the water that has entered the cover inner space directly enters the intake port 28 and the exhaust port 29. This can be prevented by the side plate portions 47b and 52b of both the duct portions 47 and 52.

  Further, the intake passage 48 of the intake duct portion 47 and the exhaust passage 54 of the exhaust duct portion 52 open downward. That is, since the intake passage 48 and the exhaust passage 54 do not open to the side cover portion 13c side of the box cover 13, even if a crack occurs in the side cover portion 13c of the box cover 13, both duct portions 47, Water hardly enters the intake passage 48 and the exhaust passage 54 of 52. Therefore, even if the side cover portion 13c of the box cover 13 is damaged, it is possible to prevent water from entering the battery box 12 from the intake port 28 and the exhaust port 29.

  The front and rear ends of the projecting plate portions 46a and 46b of the air intake cover 40 are respectively disposed at substantially the same position in the vehicle width direction as the side plate portion 47b of the intake duct portion 47. Further, the front ends of the projecting plate portions 51a and 51b before and after the exhaust port cover 41 are arranged at substantially the same position in the vehicle width direction as the side plate portion 52b of the exhaust duct portion 52, respectively. For this reason, even if the collision body contacts the box cover 13 from the outside in the vehicle width direction and the side cover portion 13c of the box cover 13 is pressed toward the side plate portion 39 on the left side of the battery box 12, the side cover portion 13c By contacting the front and rear projecting plate portions 46 a and 46 b of the air inlet cover 40 and the front and rear projecting plate portions 51 a and 51 b of the exhaust port cover 41, the side cover portion 13 c toward the left side plate portion 39 of the battery box 12 is arranged. Movement can be suppressed. For example, when the side cover portion 13c comes into contact with the front and rear protruding plate portions 46a and 46b (or the front and rear protruding plate portions 51a and 51b) before the intake duct portion 47 (or the exhaust duct portion 52), the battery The movement of the side cover portion 13c toward the left side plate portion 39 of the box 12 is suppressed by the front and rear protruding plate portions 46a and 46b, and the intake duct portion 47 can be protected from breakage and deformation. Further, even when the side cover portion 13c contacts the intake duct portion 47 (or the exhaust duct portion 52) before the front and rear protruding plate portions 46a and 46b (or the front and rear protruding plate portions 51a and 51b). Thereafter, when the side cover portion 13c contacts the front and rear protruding plate portions 46a and 46b, the movement of the side cover portion 13c toward the left side plate portion 39 of the battery box 12 is suppressed by the front and rear protruding plate portions 46a and 46b. Therefore, damage and deformation of the intake duct portion 47 can be reduced. Therefore, even if the collision body contacts the box cover 13 from the outside in the vehicle width direction, the duct portions 47 and 52 are not easily damaged. Therefore, the side cover portion 13c of the box cover 13 is damaged and water enters the cover inner space. Even if it enters, it is possible to prevent water from entering the battery box 12 from the intake port 28 or the exhaust port 29 by the both duct portions 47 and 52.

  Further, since the front and rear protruding plate portions 46a and 46b (or the front and rear protruding plate portions 51a and 51b) are integrally formed with the intake duct portion 47 (or the exhaust duct portion 52), the intake air is sucked by the front and rear protruding plate portions 46a and 46b. The rigidity of the duct portion 47 can be increased. For this reason, since deformation of both the duct portions 47 and 52 can be suppressed by the protruding plate portions 46a, 46b, 51a and 51b, both the duct portions are brought into contact with the box cover 13 from the outside in the vehicle width direction. 47 and 52 can be prevented from being damaged, and both duct portions 47 and 52 can prevent water from entering the battery box 12 from the intake port 28 or the exhaust port 29.

  Therefore, according to the present embodiment, even if a collision object collides with the box cover 13, water intrusion into the battery box 12 from the intake port 28 or the exhaust port 29 is prevented, and the hybrid inside the battery box 12 is prevented. The battery 11 can be waterproofed.

  In addition, since the hybrid unit box 10 includes the resin box cover 13, it is possible to reduce the weight and the manufacturing cost of the box cover and the hybrid unit box 10 as compared with the case where the hybrid unit box 10 includes a metal box cover. .

  In addition, the intake port cover 40 (or the exhaust port cover 41) is integrally formed with an intake duct portion 47 (or an exhaust duct portion 52) and front and rear protruding plate portions 46a and 46b (or front and rear protruding plate portions 51a and 51b). Therefore, compared with the case where the intake duct portion 47 and the front and rear protruding plate portions 46a and 46b are separate bodies, the number of work steps for the attachment work to the battery box 12 can be reduced.

  Further, since the front protruding plate portion 46a is disposed in front of the intake duct portion 47 covering the intake port 28, and the rear protruding plate portion 46b is disposed behind, the intake port cover is provided from above the side cover portion 13c. Even if water enters the cover inner space at the front or rear of 40, the front and rear protruding plate portions 46 a against the water flowing on the outer side surface of the left side plate portion 39 of the battery box 12 toward the intake port 28 side. , 46b and the intake duct 47 become barriers. Further, the rib 65c of the side cover portion 13c of the box cover 13 is disposed in front of the protruding plate portion 46a on the front side of the intake port cover 40, and the ribs 65d to 65f are from the protruding plate portion 46b on the rear side of the intake port cover 40. Is also arranged at the rear, so that even if water enters the front or rear cover inner space of the air inlet cover 40, the ribs against the water flowing on the inner side surface of the side cover portion 13 c toward the air inlet 28. 65c, 65d-65f becomes a barrier. Therefore, it is possible to prevent water that has entered the cover inner space from entering the air inlet 28 side.

  Further, since the front projecting plate portion 51a is disposed in front of the exhaust duct portion 52 covering the exhaust port 29 and the rear projecting plate portion 51b is disposed rearward, the exhaust port cover is provided from above the side cover portion 13c. Even if water enters the cover inner space in front of or behind 41, the front and rear protruding plate portions 51a against water flowing on the outer side surface of the side plate portion 39 on the left side of the battery box 12 toward the exhaust port 29 side. , 51b and the exhaust duct portion 52 serve as barriers. Further, the rib 65a of the side cover portion 13c of the box cover 13 is disposed in front of the front projecting plate portion 46a of the exhaust port cover 41, and the rib 65b is disposed rearward of the rear projecting plate portion 51b. Even if water enters the cover inner space in front of or behind the exhaust port cover 41, the ribs 65a and 65b serve as barriers against the water that flows on the inner side surface of the side cover portion 13c and moves toward the exhaust port 29. . Therefore, it is possible to prevent water that has entered the cover inner space from entering the exhaust port 29 side.

  Further, between the radiator fan intake port 64 of the side cover portion 13 c and the intake port 28 of the battery box 12, the beads 63 of the side cover portion 13 c and the flange portions 33 and 35 of the battery box 12 extend in the front-rear direction. The bead 63 of the side cover portion 13c protrudes from the side cover portion 13c side into the cover inner space, and the flange portions 33 and 35 of the battery box 12 protrude from the left side plate portion 39 side of the battery box 12 into the cover inner space. For this reason, when water enters the inside of the side cover portion 13c from the radiator fan inlet 64 of the side cover portion 13c, the bead 63 of the side cover portion 13c moves upward on the inner side surface of the side cover portion 13c due to water or the like. It acts as a barrier against water that flows to the inlet 28 side of the battery box 12. Further, the flange portions 33 and 35 of the battery box 12 flow into the water that flows upward on the outer side surface of the left side plate portion 27c of the lower case 27 of the lower case 27 of the battery box 12 and flows toward the intake port 28 side of the battery box 12 due to water force or the like. It becomes a barrier against it. Accordingly, it is possible to prevent water from entering from the radiator fan intake port 64 of the side cover portion 13 c to the intake port 28 side of the battery box 12.

  Further, since the battery box 12 is disposed above the second housing space 15, the battery box 12 is less likely to be submerged than the second housing space 15, for example, when the vehicle 1 travels on a submerged channel. That is, the first battery-related device group (including the hybrid battery 11) accommodated in the first accommodation space 14 is less likely to be submerged than the second battery-related device group accommodated in the second accommodation space 15. Therefore, the waterproof property of the hybrid battery 11 is higher than that of the second battery-related device group.

  Further, the ribs 65a to 65f and the beads 63 of the side cover portion 13c protrude from the side cover portion 13c and reinforce the side cover portion 13c, and therefore are made of resin in order to cover the entire area of the left side plate portion 39 of the battery box 12. Even if the side cover portion 13 c is formed larger, the rigidity of the side cover portion 13 c can be ensured by the ribs 65 a to 65 f and the beads 63.

  Further, 65a to 65f for reinforcing the side cover portion 13c and the beads 63 are waterproofed to prevent water from entering from the radiator fan intake port 64 to the intake port 28 side or the exhaust port 29 side of the battery box 12. Since it functions as a means, it is not necessary to newly provide another member on the side of the box cover 13 for preventing water from entering.

  In the present embodiment, the battery box 12 is provided with two vent cover (intake port cover 40 and exhaust port cover 41). However, the present invention is not limited to this, and one vent port cover is provided in the battery box 12. May be provided, or three or more vent cover may be provided.

  In the present embodiment, the intake passage 48 of the intake port cover 40 and the exhaust passage 54 of the exhaust port cover 41 are opened downward. However, the present invention is not limited to this. You may open toward.

  Further, the front and rear protruding plate portions 46a and 46b (or the front and rear protruding plate portions 51a and 51b) of the intake port cover 40 (or the exhaust port cover 41) are arranged at both ends of the filter support plate portion 45 (or the flat plate portion 50). Although it bent from the edge and protruded to the vehicle width direction outside, it is not limited to this, for example, the front protrusion plate part 46a protrudes from the rear of the front end edge of the filter support plate part 45 to the vehicle width direction outside. Alternatively, the rear protruding plate portion 46b may protrude outward in the vehicle width direction from the front of the rear end edge of the filter support plate portion 45. Further, in this embodiment, the intake port cover 40 has a pair of front and rear protruding plate portions 46a and 46b, and the exhaust port cover 41 has a pair of front and rear protruding plate portions 51a and 51b. However, the present invention is not limited to this. The intake port cover 40 and the exhaust port cover 41 may each have one protruding plate portion or three or more protruding plate portions.

  In the present embodiment, the resin box cover 13 and the metal inlet cover 40 and the exhaust outlet cover 41 are provided. However, the box cover 13 may be made of metal, and the inlet cover 40 and The exhaust port cover 41 may be made of resin.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to the content of the said embodiment, Of course, it can change suitably in the range which does not deviate from this invention. That is, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  For example, in the above embodiment, the vent cover such as the inlet cover 40 and the exhaust cover 41 is provided in the battery box 12 of the hybrid unit box 10 of the hybrid electric vehicle. May be.

1: Vehicle 10: Hybrid unit box (battery unit box)
11: Hybrid battery (battery)
12: Battery box 13: Box cover 13c: Side cover part of the box cover (cover panel)
28: Air intake (vent)
29: Exhaust port (ventilation port)
39: Side plate part on left side of battery box (outer wall part of box)
40: Inlet cover (vent cover)
41: Exhaust port cover (vent cover)
46a, 46b: Front and rear protruding plates (projecting plates)
47: Intake duct part (duct part)
47b: Side plate portion (plate portion) of intake duct portion
48: Intake path (ventilation path)
51a, 51b: Front and rear protruding plate portions (protruding plate portions)
52: Exhaust duct part (duct part)
52b: Side plate portion (plate portion) of exhaust duct portion
54: Exhaust path (ventilation path)

Claims (1)

A battery unit box in which a box vent is formed in a box outer wall portion on one side of a battery box that accommodates a battery, and a substantially entire area of the box outer wall portion is covered by a cover panel that is spaced apart from the box outer wall portion. A vent cover that is disposed outside the box vent and is fixed to the outer wall of the box,
A plate portion that is spaced apart from the box vent and faces the box vent, and divides a vent path inside that extends in a direction that crosses the direction toward the cover panel continuously from the box vent, A duct portion protruding toward the cover panel from the outer wall portion of the box;
A vent hole cover comprising: a protruding plate portion that is integrally formed with the duct portion and is disposed outside the duct portion and protrudes from the outer wall portion of the box toward the cover panel.

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