Vehicle

Abstract

Provided is a vehicle capable of improving the degree of freedom of an exhaust path and absorbing positional displacement of an exhaust duct in the vehicle width direction. A vehicle (V) is provided with: a battery case (2); a battery module (3) housed in the battery case (2); and a cooling mechanism (5) for introducing air in the vehicle interior into the battery case (2) and cooling the battery module (3), the cooling mechanism (5) having an exhaust duct (53) for discharging air from the battery case (2). The exhaust duct (53) has: a first duct section (531) connected to the battery case (2); a second duct section (532) fixed to the floor (F) of the vehicle; and a plate-shaped connecting member (533) that connects the first duct section (531) and the second duct section (532). The second pipe section (532) and the connecting member (533) are fixed by a clip (533b) in a state in which the second pipe section (532) and the connecting member (533) can slide relative to each other.

Description

Technical Field

[0001] The present invention relates to a vehicle for cooling electric equipment by air in a vehicle compartment. Background Art

[0002] In recent years, efforts to realize a low-carbon society or a decarbonized society have been actively carried out, and research related to electrification technology has been conducted in order to reduce CO2 emissions and improve energy efficiency in vehicles.

[0003] Electric vehicles, hybrid vehicles and other vehicles that use electric motors as driving sources are equipped with power equipment units that house power equipment such as batteries. In order to prevent performance degradation of the power equipment due to abnormal temperature rise, such vehicles use air extracted from the vehicle cabin to cool the power equipment and maintain the temperature of the power equipment within an appropriate range.

[0004] For example, in the vehicle described in Patent Document 1, the air that has cooled the battery is returned from the exhaust duct to the vehicle interior via the extension duct. In addition, in the vehicle described in Patent Document 1, the positional deviation of the exhaust duct and the extension duct in the vehicle width direction is absorbed by an annular and corrugated connection mechanism provided between the exhaust duct and the extension duct.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2021-146801 Summary of the invention

[0008] Problems to be solved by the invention

[0009] However, in the annular and bellows-shaped connection mechanism, the exhaust path is closed, so the degree of freedom of the exhaust path is low. On the other hand, it is also necessary to deal with the positional deviation of the exhaust duct in the vehicle width direction.

[0010] The present invention provides a vehicle capable of increasing the degree of freedom of an exhaust path and absorbing positional deviation of an exhaust duct in a vehicle width direction.

[0011] Solutions to Solve Problems

[0012] The present invention is a vehicle comprising:

[0013] case;

[0014] an electric device housed in the housing; and

[0015] a cooling mechanism for introducing air in the vehicle cabin into the housing to cool the electric device,

[0016] in,

[0017] The cooling mechanism includes an exhaust duct for exhausting the air from the housing.

[0018] The exhaust duct has:

[0019] a first pipe portion connected to the housing;

[0020] a second duct portion fixed to a floor of the vehicle; and

[0021] a plate-shaped connecting member connecting the first duct portion and the second duct portion,

[0022] The second pipe portion and the connecting member are fixed by a fixing member that passes through the through hole of the second pipe portion and the through hole of the connecting member.

[0023] The fixing member is fitted into any one of the through hole of the second pipe portion and the through hole of the connecting member.

[0024] The other of the through hole of the second duct portion and the through hole of the connecting member is longer than the one through hole at least in the width direction of the vehicle.

[0025] Effects of the Invention

[0026] According to the present invention, it is possible to provide a vehicle capable of increasing the degree of freedom of an exhaust path and absorbing positional deviation of an exhaust duct in a vehicle width direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a diagram showing a vehicle V equipped with a battery pack 1 according to an embodiment of the present invention.

[0028] Figure 2 It is a three-dimensional view of the battery package 1.

[0029] Figure 3 It is an exploded perspective view of the battery package 1.

[0030] Figure 4 1 is an exploded perspective view of an exhaust duct 53 disposed on a floor F of a vehicle V. FIG.

[0031] Figure 5 FIG. 5 is a plan view of an exhaust duct 53 disposed on a floor F of a vehicle V. FIG.

[0032] Figure 6 2 is a cross-sectional view showing a connecting member between the first duct portion 531 and the second duct portion 532 of the exhaust duct 53 .

[0033] Figure 7It is a plan view showing a main part of the exhaust gas flow path of the exhaust duct 53 .

[0034] Figure 8 For along Figure 7 Sectional view along line AA.

[0035] Description of reference numerals:

[0036] 2Battery housing (housing)

[0037] 3Battery module (power equipment)

[0038] 5Cooling mechanism

[0039] 53 Exhaust duct

[0040] 531 First Pipeline Department

[0041] 531c exhaust port

[0042] 531c1 First exhaust port

[0043] 531c2 Second exhaust port

[0044] 532 Second Pipeline Department

[0045] 532d through hole

[0046] 533 Connecting parts

[0047] 533b card holder

[0048] 533c through hole

[0049] R1 first flow path

[0050] R11 inner flow path

[0051] R12 outer flow path

[0052] R2 Second flow path

[0053] F Floor

[0054] H harness (wiring). DETAILED DESCRIPTION

[0055] Below, refer to Figures 1 to 8 In addition, the drawings are viewed along the directions indicated by the reference numerals, and in the following description, the front, rear, left, right, top and bottom are in the direction viewed from the driver, and in the drawings, the front of the vehicle is indicated as Fr, the rear is indicated as Rr, the left is indicated as L, the right is indicated as R, the top is indicated as U, and the bottom is indicated as D.

[0056] [vehicle]

[0057] like Figure 1 As shown, the vehicle V of the present embodiment is an electric vehicle such as a hybrid vehicle, and is driven by an engine and a motor generator (not shown).

[0058] A battery pack 1 is placed on the floor F of the vehicle V at a position below the front seats 6 (i.e., the driver's seat and the front passenger's seat) arranged in the vehicle cabin 7. For example, the battery pack 1 is accommodated in a recess formed in the floor F and fixed to the floor F or the vehicle frame. The battery pack 1 is connected to the motor generator via a DC line (not shown).

[0059] [Battery package]

[0060] like Figure 2 and Figure 3 As shown, the battery package 1 includes a battery case 2, a battery module 3 and an electrical device 4 housed in the battery case 2, and a cooling mechanism 5 for introducing air in the vehicle cabin into the battery case 2 to cool the battery module 3. The electrical device 4 is, for example, a battery ECU (Electronic Control Unit), a junction box, and the like.

[0061] The battery case 2 includes a bottomed case body 21 with an upper opening and a lid 22 covering the opening of the case body 21. The battery case 2 contains an electric device 4, a plurality of battery modules 3, and a cooling fan 51 as part of the cooling mechanism 5.

[0062] The cooling mechanism 5 comprises: case air inlets 26L, 26R formed in the battery case 2; upstream air inlet ducts 55L, 55R for guiding the air in the vehicle cabin introduced into the internal space of the battery case 2 via the case air inlets 26L, 26R to the battery module 3; downstream air inlet duct 50 for guiding the air after cooling the battery module 3 to the cooling fan 51; cooling fan 51; case air outlet 52 formed at the rear end of the battery case 2 and in the center in the vehicle width direction for discharging the air after cooling the battery module 3 to the outside of the battery case 2; and exhaust duct 53 for discharging the air discharged from the case air outlet 52 to the vehicle cabin. Figures 4 to 8 The exhaust duct 53 which is the main part of the present invention will be described.

[0063] like Figure 4 and Figure 5 As shown, the exhaust duct 53 includes: a first duct portion 531, which is arranged on the rear side of the battery housing along the vehicle width direction and connected to the battery housing 2; left and right second duct portions 532, which are arranged on the left and right outer sides of the first duct portion 531 and fixed to the floor F; and left and right connecting parts 533, which connect the first duct portion 531 and the second duct portion 532.

[0064] The first duct portion 531 includes: an inlet 531a connected to the housing exhaust port 52 of the battery housing 2 to introduce air exhausted from the housing exhaust port 52 into the interior of the first duct portion 531; left and right extension portions 531b extending from the inlet 531a in the vehicle width direction to guide the air introduced from the inlet 531a to the left and right outer sides; and an exhaust port 531c (see FIG. Figure 7 ) which discharges air to the outside from the terminal ends (outer ends) of the two extension portions 531b; a screw portion 531d which fixes the first duct portion 531 to the battery housing 2 near the inlet port 531a; and a clamp portion 531e which fixes the first duct portion 531 to the floor F at the terminal sides of the two extension portions 531b.

[0065] In addition, the first duct portion 531 of the present embodiment is a flat cylindrical member that independently forms a flow path for the air introduced from the introduction port 531 a , but may be a cover member that covers the floor F and forms a flow path between the first duct portion 531 and the floor F.

[0066] like Figure 7 As shown, the second duct portion 532 has: an inlet port 532a, which is opposite to the exhaust port 531c of the first duct portion 531 and introduces the air exhausted from the exhaust port 531c into the interior of the second duct portion 532; an exhaust port 532b, which discharges the air introduced from the inlet port 532a forward; and a screw portion 532c, which fixes the second duct portion 532 to the floor F.

[0067] In addition, the second duct portion 532 of the present embodiment is a cover member that covers the floor F and forms an air flow path between the second duct portion 532 and the floor F, but may be a cylindrical member that independently forms an air flow path.

[0068] The connecting member 533 is a plate-shaped member that covers the outer end of the first pipe portion 531 and the inner end of the second pipe portion 532 from above, is fixed to the outer end of the first pipe portion 531 via a screw portion 533a, and is fixed to the second pipe portion 532 via a clip 533b, thereby connecting the first pipe portion 531 and the second pipe portion 532.

[0069] Specifically, if Figure 6 As shown, the clip 533b penetrates the through hole 533c of the connecting member 533 and the through hole 532d of the second duct portion 532 from above and fits into the through hole 532d of the second duct portion 532, thereby fixing the connecting member 533 to the second duct portion 532. The through hole 533c of the connecting member 533 is longer than the through hole 532d of the second duct portion 532 in the vehicle width direction and the front-rear direction.

[0070] According to such a structure, by adopting the plate-shaped connecting member 533, unlike the conventional annular and corrugated connecting members, the degree of freedom of the flow path formation is improved. In addition, the positional deviation of the first duct part 531 and the second duct part 532 in the vehicle width direction and the front-rear direction can be absorbed by the sliding-allowing structure formed by the through hole 533c of the connecting member 533. Thus, when the connecting member 533 connected to the first duct part 531 is mounted to the second duct part 532 fixed to the floor F, the mounting workability is improved.

[0071] In the present embodiment, in the vehicle width direction and the front-rear direction, the positional deviation between the first duct portion 531 and the second duct portion 532 in the vehicle width direction and the front-rear direction is absorbed by making the through hole 533c of the connecting member 533 longer than the through hole 532d of the second duct portion 532, but the positional deviation between the first duct portion 531 and the second duct portion 532 in the vehicle width direction and the front-rear direction may be absorbed by making the through hole 532d of the second duct portion 532 longer than the through hole 533c of the connecting member 533. In addition, in the present embodiment, the positional deviation between the first duct portion 531 and the second duct portion 532 in the vehicle width direction and the front-rear direction can be absorbed, but the direction in which the positional deviation is absorbed may be only in the vehicle width direction.

[0072] like Figure 5 As shown, the exhaust duct 53 forms a first flow path R1 for exhausting air from the battery case 2 into the vehicle interior via the first duct portion 531 and the second duct portion 532 , and a second flow path R2 for exhausting air from the battery case 2 into the vehicle interior via the first duct portion 531 but not via the second duct portion 532 .

[0073] According to such an exhaust duct 53, the exhaust gas to the vehicle interior is dispersed, so that the discomfort caused by the exhaust gas to the occupants can be reduced. In addition, as described above, the second duct portion 532 is a cover member covering the floor F, and the first flow path R1 is formed between the second duct portion 532 and the floor F, so the exhaust area is increased and the flow rate is reduced, thereby appropriately controlling the exhaust gas and suppressing the generation of abnormal sounds.

[0074] like Figure 7 As shown, the second flow path R2 allows the air exhausted from the battery case 2 to be exhausted into the vehicle interior through the gap between the first duct portion 531 and the second duct portion 532 which is covered by the connecting member 533 from above. In this way, the second flow path R2 can be easily formed.

[0075] In addition, the first flow path R1 and the second flow path R2 discharge the air exhausted from the battery case 2 in different directions in the front-rear direction of the vehicle V. For example, the first flow path R1 discharges the air exhausted from the battery case 2 toward the front of the vehicle, and the second flow path R2 discharges the air exhausted from the battery case 2 toward the rear of the vehicle. In this way, the exhaust gas to the vehicle cabin can be reliably dispersed, and the discomfort caused by the exhaust gas to the occupants can be reduced.

[0076] like Figure 7 and Figure 8 As shown, the wire harness H is arranged between the second duct portion 532 and the floor F along the front-rear direction of the vehicle V. For example, the second duct portion 532 of this embodiment has a recessed portion 532e at its rear end portion (see Figure 4 ) and the wiring harness H is introduced between the second duct portion 532 and the floor F via the recessed portion 532e.

[0077] In addition, a plurality of ribs 532f protruding downward are formed on the lower surface of the second duct portion 532, and the ribs 532f define the routing path of the wire harness H. Figure 7 and Figure 8 As shown, the wire harness H of this embodiment is routed between the second duct portion 532 and the floor F in such a manner that it is inclined closer to the inner side of the vehicle V as it approaches the front side of the vehicle V when viewed from above, and is inclined closer to the lower side as it approaches the front side of the vehicle V when viewed from the side. In this way, the second duct portion 532 can have a supporting function for the wire harness H.

[0078] The exhaust port 531c of the first duct portion 531 ejects the air exhausted from the battery housing 2 toward the wiring harness H. Thus, the direction of the exhaust can be controlled by the wiring harness H. For example, the first flow path R1 is distributed into an inner flow path R11 for air to pass through the inner side (upper side) of the wiring harness H and an outer flow path R12 for air to pass through the outer side (lower side) of the wiring harness H by contacting the wiring harness H. In this way, the exhaust can be further dispersed, further reducing the discomfort caused to the occupants.

[0079] In addition, the exhaust port 531c of the first duct portion 531 has a branch portion 531f in the middle portion in the front-to-back direction, and the exhaust port 531c is branched into a first exhaust port 531c1 and a second exhaust port 531c2. The first exhaust port 531c1 is located in front of the exhaust port 531c and communicates with the inner flow path R11, and the second exhaust port 531c2 is located at a position closer to the rear side than the first exhaust port 531cl and communicates with the outer flow path R12. Thus, the air discharged from the exhaust port 531c of the first duct portion 531 can be reliably dispersed to the inner flow path R11 and the outer flow path R12.

[0080] Above, various embodiments have been described with reference to the accompanying drawings, but the present invention is certainly not limited to this example. It should be understood by those skilled in the art that various variations or modifications can be conceived within the scope of the technical solution, and these variations or modifications certainly also belong to the technical scope of the present invention. In addition, the various constituent elements in the above-mentioned embodiments may also be arbitrarily combined within the scope of the gist of the invention.

[0081] In this specification, at least the following matters are described. In addition, although the corresponding components and the like in the above-mentioned embodiment are shown in brackets, the present invention is not limited thereto.

[0082] (1) A vehicle (vehicle V) comprising:

[0083] Housing (battery housing 2);

[0084] an electric power device (battery module 3), which is accommodated in the housing; and

[0085] a cooling mechanism (cooling mechanism 5) that introduces air in the vehicle interior into the housing to cool the electric equipment,

[0086] in,

[0087] The cooling mechanism includes an exhaust duct (exhaust duct 53) for exhausting the air from the housing.

[0088] The exhaust duct has:

[0089] a first pipe portion (first pipe portion 531 ), which is connected to the housing;

[0090] a second duct portion (second duct portion 532) fixed to the floor (floor F) of the vehicle; and

[0091] A plate-shaped connecting member (connecting member 533) connecting the first duct portion and the second duct portion,

[0092] The second pipe section and the connecting member are fixed by a fixing member (clip 533b) that passes through a through hole (through hole 533c) of the second pipe section and a through hole (through hole 532d) of the connecting member.

[0093] The fixing member is fitted into any one of the through hole of the second pipe portion and the through hole of the connecting member.

[0094] The other of the through hole of the second duct portion and the through hole of the connecting member is longer than the one through hole at least in the width direction of the vehicle.

[0095] According to (1), by adopting a plate-shaped connecting member, unlike the conventional annular and corrugated connecting members, the degree of freedom of forming the flow path is increased. In addition, the positional deviation between the first duct part and the second duct part in the vehicle width direction can be absorbed by the sliding mechanism formed by the through hole of the second duct part and the through hole of the connecting member. As a result, when the connecting member connected to the first duct part is mounted on the second duct part fixed to the vehicle body, the mounting workability is improved.

[0096] (2) The vehicle according to (1), wherein:

[0097] The through hole of the connecting member is longer than the through hole of the second duct portion in the width direction of the vehicle.

[0098] According to (2), by making the through hole of the connecting member longer in the vehicle width direction than the through hole of the second duct portion, positional deviation between the first duct portion and the second duct portion in the vehicle width direction can be absorbed.

[0099] (3) The vehicle according to (1) or (2), wherein:

[0100] The exhaust duct has:

[0101] a first flow path (first flow path R1) through which the air passes through the first duct portion and the second duct portion; and

[0102] A second flow path (second flow path R2) allows the air to pass through the first duct portion and not pass through the second duct portion.

[0103] According to (3), the exhaust gas can be dispersed, the temperature management in the vehicle interior can be facilitated, and the discomfort caused to the occupants by the exhaust gas from the exhaust duct can be eliminated or reduced.

[0104] (4) The vehicle according to any one of (1) to (3), wherein:

[0105] The exhaust duct has a first flow path (first flow path R1) through which the air passes through the first duct portion and the second duct portion.

[0106] The second duct portion is a cover member that covers the floor (floor F) of the vehicle, and the first flow path is formed between the second duct portion and the floor.

[0107] According to (4), the exhaust area increases, so the flow velocity decreases, thereby enabling exhaust to be controlled and preventing the generation of abnormal sounds.

[0108] (5) The vehicle according to any one of (1) to (4), wherein:

[0109] Between the second duct portion and the floor, wiring (wire harness H) is routed along the front-rear direction of the vehicle.

[0110] According to (5), the second duct portion can have a function of supporting the wiring.

[0111] (6) The vehicle according to (5), wherein:

[0112] The exhaust port (exhaust port 531c) of the first duct portion is formed so as to eject the air toward the wiring.

[0113] According to (6), exhaust gas can be controlled by wiring.

[0114] (7) The vehicle according to (6), wherein:

[0115] The first flow path is divided into an inner flow path (inner flow path R11 ) through which the air passes inside the wiring and an outer flow path (outer flow path R12 ) through which the air passes outside the wiring by coming into contact with the wiring.

[0116] According to (7), the exhaust gas can be further dispersed, and the discomfort caused to the occupants by air conditioning can be eliminated or reduced.

[0117] (8) The vehicle according to any one of (1) to (7), wherein:

[0118] The exhaust port of the first duct portion includes: a first exhaust port (first exhaust port 531c1) located in front of the vehicle and connected to the inner flow path; and a second exhaust port (second exhaust port 531c2) located rearward of the first exhaust port and connected to the outer flow path.

[0119] According to (8), exhaust gas can be easily dispersed.

[0120] (9) The vehicle according to (3), wherein:

[0121] The second flow path allows the air to pass through a gap that is covered by the connecting member from above and is provided between the first duct portion and the second duct portion.

[0122] According to (9), the second flow path can be easily formed by not adopting an annular structure.

[0123] (10) The vehicle according to (9), wherein:

[0124] The first flow path and the second flow path discharge the air in different directions in the front-rear direction of the vehicle.

[0125] According to (10), the discomfort caused to the occupants by air conditioning can be eliminated or reduced.

Claims

1. A vehicle comprising: case; an electric device housed in the housing; and a cooling mechanism for introducing air in the vehicle cabin into the housing to cool the electric device, in, The cooling mechanism includes an exhaust duct for exhausting the air from the housing. The exhaust duct has: a first pipe portion connected to the housing; a second duct portion fixed to a floor of the vehicle; and a plate-shaped connecting member connecting the first duct portion and the second duct portion, The second pipe portion and the connecting member are fixed by a fixing member that passes through the through hole of the second pipe portion and the through hole of the connecting member. The fixing member is fitted into any one of the through hole of the second pipe portion and the through hole of the connecting member. The other of the through hole of the second duct portion and the through hole of the connecting member is longer than the one through hole at least in the width direction of the vehicle.

2. The vehicle according to claim 1, wherein: The through hole of the connecting member is longer than the through hole of the second duct portion in the width direction of the vehicle.

3. The vehicle according to claim 1 or 2, wherein: The exhaust duct has: a first flow path for the air to pass through the first duct portion and the second duct portion; and The second flow path allows the air to pass through the first duct portion but not through the second duct portion.

4. The vehicle according to claim 1 or 2, wherein: The exhaust duct has a first flow path for the air to pass through the first duct portion and the second duct portion, The second duct portion is a cover member that covers the floor of the vehicle, and the first flow path is formed between the second duct portion and the floor.

5. The vehicle according to claim 4, wherein: Wiring is routed between the second duct portion and the floor along the front-rear direction of the vehicle.

6. The vehicle according to claim 5, wherein: The exhaust port of the first duct portion is formed so as to eject the air toward the wiring.

7. The vehicle according to claim 6, wherein: The first flow path is divided into an inner flow path through which the air passes inside the wiring and an outer flow path through which the air passes outside the wiring by coming into contact with the wiring.

8. The vehicle according to claim 7, wherein: The exhaust port of the first duct portion includes a first exhaust port located in front of the vehicle and communicating with the inner flow path, and a second exhaust port located behind the first exhaust port and communicating with the outer flow path.

9. The vehicle according to claim 3, wherein: The second flow path allows the air to pass through a gap that is covered by the connecting member from above and is provided between the first duct portion and the second duct portion.

10. The vehicle according to claim 9, wherein: The first flow path and the second flow path discharge the air in different directions in the front-rear direction of the vehicle.

Images