JP2023065274A - Waterproofing structure of high voltage battery - Google Patents

Abstract

To provide a waterproofing structure of a high voltage battery which inhibits moisture from collecting at an air intake taking in air to cool the high voltage battery.SOLUTION: A waterproofing structure of a high voltage battery comprises: a high voltage battery BT which is mounted on a vehicle 100; a battery housing chamber 10 which accommodates the high voltage battery BT and is installed at a lower portion in a vehicle height direction in a cabin; a cooling blower 12 which blows air into the battery housing chamber 10; and a trim 20 which has a trim side air intake taking in air from the cabin to the battery housing chamber 10 in accompany with driving of the cooling blower 12. The waterproofing structure of the high voltage battery includes a canopy portion 26 which is arranged at the upstream side in an air flow direction at the trim side air intake of the trim 20 and at the upper side in the vehicle height direction in comparison with the trim side air intake.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a water exposure prevention structure for a high voltage battery.

Conventionally, a water exposure prevention structure for a high-voltage battery has been proposed (see Patent Documents 1 and 2, for example).

The above Patent Document 1 relates to a cooling structure for a high-voltage battery mounted in an electric vehicle, a hybrid vehicle, or the like, and particularly discloses a cooling structure for a high-voltage battery mounted in the passenger compartment of the vehicle. . The cooling structure disclosed in Patent Document 1 includes an air intake blower that introduces cooling air from a cooling air intake port provided under the seat in the passenger compartment into the battery case containing the high voltage battery, and a battery case inside the battery case. An exhaust duct for exhausting cooling air circulated through the is described.

In the above Patent Document 2, an on-vehicle battery (high-voltage battery) for driving the vehicle is provided in the lower part of the rear seat or the like in an electric vehicle or a hybrid vehicle, etc., and the cooling air is taken in from the cooling air intake provided in the lower part of the rear seat. A structure is disclosed that cools an on-vehicle battery by blowing the obtained cooling air toward the on-vehicle battery. In Patent Document 2, a blower is used to take in cooling air from the vehicle interior, and the blower is arranged so that the axis of the blower is inclined at a predetermined angle with respect to the floor surface of the vehicle interior. is stated.

JP-A-2002-166728 JP 2016-94141 A

In general, it is assumed that luggage such as plastic tanks and PET bottles containing water is placed on the seats in the passenger compartment. However, there are cases where a plastic tank, a plastic bottle, or the like is knocked over with the cap not tightly closed, and water is spilled on the seat. In this case, in the structures disclosed in Patent Documents 1 and 2, the cooling air is sucked from the cooling air intake port of the vehicle battery provided under the seat, and the water is sucked. As a result, the structures disclosed in Patent Documents 1 and 2 may adversely affect the operation of the vehicle battery.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a structure for preventing moisture from accumulating in an air inlet for taking in air for cooling a high-voltage battery. intended to

In order to achieve the above objects, the present invention is configured as follows.

(1) A high-voltage battery water protection structure according to the present invention includes a high-voltage battery mounted on a vehicle, and a battery storage chamber that accommodates the high-voltage battery and is disposed below the vehicle in the vehicle height direction. a blower for blowing air into the battery housing chamber; and an air intake provided with an air intake port for drawing air from the vehicle interior into the battery housing chamber as the blower is driven. and a canopy portion is provided on the upstream side in the air flow direction of the air intake portion and above the air intake port in the vehicle height direction.

For example, when a seat or the like is provided above the air intake portion in the vehicle height direction, the high-voltage battery water protection structure of the present invention can Even if the PET bottle is accidentally tilted and water flows into the air intake section located below the seat, the eaves provided above the air intake section will prevent the air intake opening in front of the air intake opening (air flow (the portion upstream of the That is, the water exposure prevention structure of the present invention can prevent moisture from entering the air intake portion. As a result, according to the present invention, it is possible to provide a structure for preventing moisture from accumulating in the air intake port that takes in air for cooling the high-voltage battery. Furthermore, the water exposure prevention structure of the present invention can take measures to prevent water exposure of the high-voltage battery without adding any parts other than the air intake portion.

(2) In the high-voltage battery water protection structure according to the present invention, it is preferable that the eaves slope downward toward the vehicle width direction outer side. By configuring the water exposure prevention structure of the present invention in this way, the water that has flowed down to the eaves is drained outward in the vehicle width direction, so the water is sucked from the air intake port of the air intake portion. can be suppressed.

(3) A high-voltage battery water protection structure according to the present invention includes a high-voltage battery mounted on a vehicle, and a battery storage chamber that accommodates the high-voltage battery and is disposed below the vehicle in the vehicle height direction. a blower for blowing air into the battery housing chamber; and an air intake provided with an air intake port for drawing air from the vehicle interior into the battery housing chamber as the blower is driven. wherein the air intake unit includes a trim and a bezel arranged upstream in an air flow direction with respect to the trim, and the trim includes a trim-side air intake for taking in the air. An intake and a trim-side attachment portion attached to the bezel are provided, and the bezel includes a bezel-side air intake for taking in the air and a bezel-side attachment to the trim. A mounting portion is provided, and in a region of the trim between the trim side air intake port and the trim side mounting portion, there is a downward direction from the trim side air intake port toward the trim side mounting portion. An inclined lower surface portion is formed, and when the trim and the bezel are assembled, the trim side mounting portion and the bezel side mounting portion are positioned below the inclined lower surface portion in the vehicle height direction. A gap is formed between them.

According to the high-voltage battery water protection structure of the present invention, when water enters the vicinity of the trim-side air intake of the trim, the water can be discharged in the direction in which the inclined lower surface portion is inclined. As a result, in the water exposure prevention structure of the present invention, water does not accumulate in the trim side air intake in the upstream side of the air flow, so that the infiltrated water flows out (upstream of the air flow). can be made Furthermore, the water exposure prevention structure of the present invention can discharge moisture that has entered the trim to the outside through the gap formed between the trim-side mounting portion and the bezel-side mounting portion. As a result, the water exposure prevention structure of the present invention effectively prevents moisture from accumulating in the space between the trim-side air intake port of the trim for taking in air for cooling the high-voltage battery and the trim-side mounting portion. can be effectively suppressed.

(4) In the water protection structure of the present invention, preferably, a rib extending along the vehicle height direction is provided below at least one of the trim side mounting portion and the bezel side mounting portion in the vehicle height direction. and the gap is formed by the rib. The structure for preventing water exposure according to the present invention can effectively form a gap by means of the ribs. As a result, the water exposure prevention structure of the present invention can facilitate the discharge of moisture that has entered between the trim and the bezel downward in the direction in which the ribs extend (in the vehicle height direction). Further, in the water protection structure of the present invention, the ribs can improve the rigidity of at least one of the trim and the bezel.

ADVANTAGE OF THE INVENTION According to the aspect which concerns on this invention, the water|damage prevention structure of a high-voltage battery which can suppress that water accumulates in the air intake which takes in the air which cools a high-voltage battery can be provided.

1 is a schematic view showing a rear seat in a vehicle interior provided with a water protection structure for a high-voltage battery according to an embodiment of the present invention, viewed from the front in the direction of travel of the vehicle to the rear; FIG. 1 is a schematic diagram showing a water protection structure for a high-voltage battery according to an embodiment of the present invention; FIG. (a) is a view of the trim to which the bezel is attached as seen from the front in the direction of travel of the vehicle, and (b) is a view of the trim to which the bezel is attached as seen from above in the height direction of the vehicle. (a) is a diagram showing the front surface of the bezel, and (b) is a diagram showing the rear surface of the bezel. (a) is a diagram showing ribs formed on the back surface of the bezel, and (b) is a diagram showing a filter attached to the back surface of the bezel. (a) is a diagram showing the trim with the bezel removed, and (b) is a diagram seen from a different direction from (a).

Hereinafter, a water exposure prevention structure 1 for a high-voltage battery according to an embodiment of the present invention will be described with reference to the accompanying drawings. These figures are schematic diagrams and are not necessarily drawn to exact proportions. Moreover, in the drawings, the same components are denoted by the same reference numerals.

A water protection structure 1 for a high-voltage battery according to the present embodiment will be described with reference to FIGS. 1 to 6. FIG.

As shown in FIGS. 1 and 2, a vehicle 100 is equipped with a high-voltage battery water protection structure 1 according to the present embodiment. This vehicle 100 is, for example, a hybrid vehicle, an electric vehicle, or the like. In addition, the vehicle 100 is provided with a driver's seat, a front passenger's seat, a rear seat RS, a luggage compartment, and the like. Note that the vehicle 100 may be a wagon or the like in which the passenger compartment and luggage compartment are integrated.

The vehicle 100 is equipped with a high-voltage battery BT for driving the vehicle. A high-voltage battery BT is housed in a battery housing chamber 10 . The battery storage chamber 10 is arranged below the rear seat RS (below the vehicle interior in the vehicle height direction). The high-voltage battery BT is configured, for example, by housing an assembled battery in which a plurality of batteries are combined in a battery module case made of metal.

As shown in FIGS. 1 and 2, in the battery housing chamber 10, a cooling blower 12 is arranged on the upstream side of the air flow with respect to the high-voltage battery BT. The cooling blower 12 is an example of the "blower" of the present invention. Cooling blower 12 is arranged at a position adjacent to high voltage battery BT (one end of high voltage battery BT). Specifically, the cooling blower 12 is arranged below the rear seat RS and on the left side with respect to the traveling direction of the vehicle. The cooling blower 12 is arranged so as not to be visually recognized from the outside by a trim 20 which will be described later.

The cooling blower 12 cools the high-voltage battery BT by blowing air into the battery housing chamber 10 . Specifically, the cooling blower 12 has, for example, an intake opening (not shown). A multi-blade fan and a fan motor directly connected to the fan are arranged in the intake opening. The cooling blower 12 blows the air taken in from the air intake opening toward the battery housing chamber 10 (high voltage battery BT) by rotating the fan as the fan motor is driven.

A trim 20 is arranged on the upstream side of the air flow with respect to the cooling blower 12 . Specifically, the trim 20 is arranged below the rear seat RS and on the left side with respect to the traveling direction of the vehicle. The trim 20 is arranged so that it can be visually recognized from the outside by an occupant. As shown in FIGS. 6( a ) and 6 ( b ), the trim 20 is provided with a trim-side air intake port 22 and a trim-side mounting portion 24 . The trim-side air intake port 22 is formed in a substantially circular shape and is arranged at the rear of the trim 20 . The trim-side air intake port 22 is provided to take air from the vehicle interior into the battery housing chamber 10 as the cooling blower 12 is driven. The trim-side attachment portion 24 is formed on the front side of the trim 20 . The trim side attachment portion 24 is a portion attached to a bezel side attachment portion 34 of the bezel 30 described later.

As shown in FIGS. 1 to 4, a bezel 30 is arranged upstream of the trim 20 in the air flow. The bezel 30 is provided with a bezel-side air inlet 32 and a bezel-side mounting portion 34 . The bezel-side air intake port 32 is provided to take in air from the vehicle interior through the trim 20 into the battery housing chamber 10 when the cooling blower 12 is driven.

As shown in FIG. 4A, the bezel-side air intake port 32 is composed of a plurality of fins 32a and a plurality of connecting members 32b. The bezel-side air intake port 32 takes in air from between the fins 32a of the bezel-side air intake port 32. As shown in FIG. The plurality of fins 32a are formed to extend along the vehicle width direction and are arranged at equal intervals along the vehicle height direction. The plurality of connection members 32b are rod-shaped members and connect the plurality of fins 32a along the vehicle height direction. As shown in FIG. 4B, the bezel-side mounting portion 34 is provided along the periphery of the bezel-side air intake 32 on the back surface of the bezel 30 (the surface on the downstream side in the direction of air flow). , to be attached to the trim-side attachment portion 24 of the trim 20 .

Here, in this embodiment, as shown in FIGS. 1 to 3 and 6, the trim 20 is provided with a canopy portion 26. As shown in FIGS. The eaves portion 26 is provided on the upstream side in the air flow direction of the trim side air intake port 22 of the trim 20 and above the trim side air intake port 22 in the vehicle height direction. The eaves portion 26 is formed so as to protrude from the surface of the trim 20 toward the upstream side of the air flow, and has a downward slope toward the outside in the vehicle width direction. As a result, when water flows onto the upper surface of the eaves portion 26 , the water is drained outward in the vehicle width direction along the upper surface of the eaves portion 26 .

Further, in this embodiment, as shown in FIGS. 6A and 6B, a space S is formed between the trim side air intake port 22 and the trim side mounting portion 24 in the trim 20. ing. The space S is formed in a substantially rectangular shape when viewed from the upstream side of the air flow. The space S is formed by an upper surface portion SU, a right side portion SR, a left side portion SL, and an inclined lower surface portion SB. The inclined lower surface portion SB extends downward from the trim side air intake port 22 toward the trim side mounting portion 24 in a region (space S) between the trim side air intake port 22 and the trim side mounting portion 24 in the trim 20 . is formed so as to incline to

In this embodiment, as shown in FIGS. 4B and 5A, ribs 36 (longitudinal ribs) are formed on the bezel-side mounting portion 34 (back surface of the bezel 30) of the bezel 30. there is The rib 36 is integrally formed with the bezel 30 . The rib 36 is formed below the bezel 30 in the vehicle height direction so as to extend along the vehicle height direction. A plurality of ribs 36 are formed along the width direction of the vehicle. These multiple ribs 36 are arranged at regular intervals along the width direction of the vehicle.

In a state where the trim 20 and the bezel 30 are assembled, a gap G is formed between the trim side mounting portion 24 and the bezel side mounting portion 34 below the inclined lower surface portion SB in the vehicle height direction. . A gap G is formed by a plurality of ribs 36 of the bezel 30 .

Further, as shown in FIG. 5B, a filter 40 is provided on the rear surface of the bezel 30. As shown in FIG. The filter 40 has a plurality of folds 42 extending along the vehicle height direction. The plurality of folds 42 are arranged at regular intervals along the vehicle width direction. A lower end portion of the filter 40 is arranged so as to partially overlap the rib 36 .

As shown in FIGS. 4A and 4B, a plurality of bezel-side engaging portions 341 and bezel-side fastening portions 342 are formed around the bezel-side mounting portion 34 of the bezel 30 . The plurality of bezel-side engaging portions 341 are configured to engage with trim-side engaging portions 241 of the trim 20, which will be described later.

As shown in FIGS. 6A and 6B, a plurality of trim side engaging portions 241 and trim side fastening portions 242 are formed around the trim side mounting portion 24 (space S) of the trim 20. It is Specifically, the plurality of trim-side engaging portions 241 are formed in portions of the right side surface portion SR and the left side surface portion SL of the trim 20 on the upstream side of the air flow. The plurality of trim side engaging portions 241 are configured to engage with the bezel side engaging portions 341 of the bezel 30 respectively.

When assembling the bezel 30 to the trim 20, the plurality of trim-side engaging portions 241 of the trim 20 and the plurality of bezel-side engaging portions 341 of the bezel 30 are engaged with each other to fasten the fastening members 50 such as screws. to the trim side fastening portion 242 via the bezel side fastening portion 342, the trim 20 and the bezel 30 are assembled.

According to the embodiment described above, the following effects (1) to (4) can be obtained.

(1) In the high-voltage battery water exposure prevention structure 1 according to the above-described embodiment, the eaves portion 26 is positioned upstream in the air flow direction of the trim 20 and above the trim-side air intake 22 in the vehicle height direction. established. According to the water exposure prevention structure 1 of the above-described embodiment, for example, when a seat or the like is provided above the trim side air intake 22 in the vehicle height direction, water placed on the seat may enter. Even if the plastic tank or PET bottle that is in the tank accidentally tilts and moisture flows into the trim-side air intake port 22 arranged below the seat, the eaves 26 provided above the trim-side air intake port 22 will prevent moisture from leaking. , it is possible to prevent moisture from entering in front of the trim side air intake port 22 (portion on the upstream side of the air flow). That is, the water exposure prevention structure 1 can prevent moisture from entering the trim 20 . As a result, the water exposure prevention structure 1 can provide a high voltage battery water exposure prevention structure 1 capable of suppressing accumulation of moisture in the trim-side air intake port 22 that takes in air for cooling the high voltage battery BT. can. Furthermore, the water exposure prevention structure 1 can prevent the high voltage battery from being exposed to water without adding any parts other than the trim 20 .

(2) In the high-voltage battery water exposure prevention structure 1 according to the above-described embodiment, the eaves portion 26 is formed so as to slope downward toward the outside in the vehicle width direction. As a result, the water exposure prevention structure 1 can drain the water that has flowed down to the upper portion of the eaves portion 26 toward the outside in the vehicle width direction, and can suppress the water from being sucked from the trim side air intake port 22 of the trim 20 .

(3) In the high voltage battery water protection structure 1 according to the above embodiment, the inclined lower surface portion SB is formed in the area between the trim side air intake port 22 and the trim side mounting portion 24 in the trim 20, and the trim 20 and the bezel 30 are assembled, a gap G is formed between the trim side mounting portion 24 and the bezel side mounting portion 34 below the inclined lower surface portion SB in the vehicle height direction. As a result, when water enters the vicinity of the trim-side air intake port 22 of the trim 20, the water exposure prevention structure 1 can discharge the water in the direction in which the inclined lower surface portion SB is inclined. As a result, the water exposure prevention structure 1 prevents water from accumulating in the portion of the trim side air intake 22 on the upstream side of the air flow inside the trim 20, and directs the infiltrated water to the outside (upstream side of the air flow). can be drained to Furthermore, the water exposure prevention structure 1 can discharge moisture that has entered the trim 20 to the outside through the gap G formed between the trim side mounting portion 24 and the bezel side mounting portion 34 . As a result, the water exposure prevention structure 1 can effectively prevent moisture from accumulating in the space S between the trim-side air intake port 22 and the trim-side mounting portion 24 of the trim 20 .

(4) In the high-voltage battery water protection structure 1 according to the above-described embodiment, the gap G is formed by the ribs 36 formed so as to extend along the vehicle height direction below the bezel side mounting portion 34 in the vehicle height direction. formed. As a result, the water exposure prevention structure 1 effectively forms the gap G by the ribs 36, and directs moisture that has entered between the trim 20 and the bezel 30 downward in the direction in which the ribs 36 extend (in the vehicle height direction). can make it easier to expel. Furthermore, the water exposure prevention structure 1 can improve the rigidity of the bezel 30 with the ribs 36 .

(Modification)
The above embodiment can also be modified as follows.

In the above-described embodiment, an example is shown in which the eaves provided on the trim are directed outward in the vehicle width direction to form a downward slope, but the present invention is not limited to this. In the present invention, if it is possible to prevent moisture from entering the trim-side air intake port of the trim, it is possible to form the eaves so as to slope downward toward the vehicle width direction inner side. However, it is also possible to form like a roof so that it slopes down from the center of the eaves portion to both the inner side and the outer side in the vehicle width direction.

In the above-described embodiment, an example is shown in which ribs are formed on the rear surface of the bezel so as to extend in the vehicle height direction, but the present invention is not limited to this. In the present invention, ribs may be formed on the surface of the trim (trim-side attachment portion) so as to extend in the vehicle height direction. Also, ribs may be formed on both the back surface of the bezel (bezel-side attachment portion) and the front surface of the trim (trim-side attachment portion) so as to extend in the vehicle height direction.

In the above-described embodiment, an example is shown in which ribs are formed on the rear surface of the bezel so as to extend in the vehicle height direction, but the present invention is not limited to this. In the present invention, the ribs may be formed so as to be inclined with respect to the vehicle height direction as long as the moisture that has entered the trim can be discharged along the ribs.

In the above-described embodiment, an example in which a gap is formed by a rib between the trim-side mounting portion of the trim and the bezel-side mounting portion of the bezel has been shown, but the present invention is not limited to this. In the present invention, it is also possible to form a gap by providing a member other than a rib between the trim-side mounting portion of the trim and the bezel-side mounting portion of the bezel.

In the above-described embodiment, an example in which a cooling blower is applied as an example of a blower for blowing air into the battery housing chamber has been described, but the present invention is not limited to this. In the present invention, a blowing device other than the cooling blower can be applied as long as it is possible to send air into the battery housing chamber.

In the above-described embodiment, an example in which the high-voltage battery is mounted in the battery storage compartment arranged under the rear seat (below the vehicle in the vehicle height direction) is shown, but the present invention is not limited to this. In the present invention, a battery compartment for mounting a high-voltage battery may be arranged under the luggage compartment of the rear seat. In this case, the air intake should be provided in the lower part of the rear seat.

All of the above embodiments are examples of adaptations of the present invention, and any other embodiments within the scope of the claims are of course included in the technical scope of the invention.

1: Water exposure prevention structure 10: Battery compartment 12: Cooling blower (air blower)
20: Trim (air intake part)
22: Trim side air intake (air intake)
24: trim side mounting portion 241: trim side engaging portion 242: trim side fastening portion 26: canopy portion 30: bezel (air intake portion)
32: Bezel side air intake (air intake)
34: Bezel-side mounting portion 341: Bezel-side engaging portion 342: Bezel-side fastening portion 36: Rib 100: Vehicle BT: High-voltage battery G: Gap SB: Inclined lower surface portion

Claims (4)

a high-voltage battery installed in a vehicle;
a battery housing chamber in which the high-voltage battery is housed and arranged below in the vehicle height direction in the vehicle interior;
a blower for blowing air into the battery housing;
an air intake portion provided with an air intake port for taking in air from the vehicle compartment to the battery housing as the blower is driven;
A water protection structure for a high-voltage battery, characterized in that a canopy is provided on the upstream side of the air intake in the air flow direction and above the air intake in the vehicle height direction. . 2. The water protection structure for a high-voltage battery according to claim 1, wherein the eaves slope downward toward the vehicle width direction outer side. a high-voltage battery installed in a vehicle;
a battery housing chamber in which the high-voltage battery is housed and arranged below in the vehicle height direction in the vehicle interior;
a blower for blowing air into the battery housing;
an air intake portion provided with an air intake port for taking in air from the vehicle compartment to the battery housing as the blower is driven;
The air intake section includes a trim and a bezel arranged upstream of the trim in an air flow direction,
The trim is provided with a trim-side air intake port for taking in the air and a trim-side attachment portion attached to the bezel,
The bezel is provided with a bezel-side air intake port for taking in the air and a bezel-side attachment portion attached to the trim,
A region of the trim between the trim-side air intake port and the trim-side mounting portion is formed with an inclined lower surface portion that slopes downward from the trim-side air intake port toward the trim-side mounting portion. and
In a state where the trim and the bezel are assembled, a gap is formed between the trim-side mounting portion and the bezel-side mounting portion below the inclined lower surface portion in the vehicle height direction. A water exposure prevention structure for a high-voltage battery characterized by: A rib extending along the vehicle height direction is formed below at least one of the trim side mounting portion and the bezel side mounting portion in the vehicle height direction,
4. The water protection structure for a high-voltage battery according to claim 3, wherein said gap is formed by said rib.

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