JP2017030655A - On-vehicle battery device - Google Patents

On-vehicle battery device Download PDF

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JP2017030655A
JP2017030655A JP2015154906A JP2015154906A JP2017030655A JP 2017030655 A JP2017030655 A JP 2017030655A JP 2015154906 A JP2015154906 A JP 2015154906A JP 2015154906 A JP2015154906 A JP 2015154906A JP 2017030655 A JP2017030655 A JP 2017030655A
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opening
battery
passenger compartment
electric vehicle
water
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信昭 木谷
Nobuaki Kitani
信昭 木谷
文志 野村
Fumiji Nomura
文志 野村
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Toyota Motor Corp
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Toyota Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
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Abstract

PROBLEM TO BE SOLVED: To provide a battery device which inhibits water from entering into a battery when an electric vehicle overturns in a submerged road.SOLUTION: An on-vehicle battery device 10 includes: a waterproof casing 11 which houses a battery 25 and a blower 21; a first opening 12 provided at the waterproof casing 11 and communicating with an air intake port of the blower 21; a second opening 13 provided at the waterproof casing 11 and communicating with an air exhaust port of the battery 25; an intake duct 14 connected to the first opening 12; and an exhaust duct 15 connected to the second opening. The first opening 12 and the second opening 13 are disposed near an inner wall surface of a passenger compartment 35. An intake port 16 is disposed near a portion of the inner wall surface which is located at an upper side of the passenger compartment and an opposite side of the first opening 12 in a crosswise direction, and an exhaust port 17 is disposed at a portion of the inner wall surface which is located at the upper side of the passenger compartment and an opposite side of the second opening 13 in the crosswise direction.SELECTED DRAWING: Figure 1

Description

本発明は、車載用バッテリ装置の構造に関する。   The present invention relates to a structure of an in-vehicle battery device.

近年、モータを駆動源とする電気自動車やエンジンとモータとを駆動源とするハイブリッド車両のような電動車両が多く用いられるようになってきている。これらの電動車両に搭載されるモータ駆動用のバッテリは、空気冷却式であるため、渡河走行等の際にバッテリ内部に水が浸入する可能性のあるオフロード車やクロスカントリー車には従来のエンジンを駆動源とするものが多く用いられていた。   In recent years, an electric vehicle such as an electric vehicle using a motor as a drive source or a hybrid vehicle using an engine and a motor as a drive source has been widely used. The battery for driving the motor mounted on these electric vehicles is air-cooled, so that it is conventional for off-road vehicles and cross-country vehicles where water may enter the battery when traveling across the river. Many engines were used as the driving source.

一方、水溜り等の走行を行うトラックでは、シャシーの床下に筺体で覆われたバッテリを搭載し、筺体に吸気ダクトと排気ダクトとを接続し、吸気ダクトの吸気口と排気ダクトの排気口をタイヤの中心よりも上側に配置してバッテリの内部への水の浸入を防ぐ構造が提案されている（例えば、特許文献１参照）。   On the other hand, in trucks that carry water pools, etc., a battery covered with a chassis is mounted under the chassis floor, and an intake duct and an exhaust duct are connected to the chassis, and an intake port of the intake duct and an exhaust port of the exhaust duct are connected. A structure has been proposed that is disposed above the center of the tire to prevent water from entering the inside of the battery (see, for example, Patent Document 1).

また、バッテリに車室外の空気を導入してバッテリの冷却を行う電動車両において、バッテリへの水分の侵入を防止するために、フロントグリルからモータを格納しているフードの下面に沿って斜め上方向に空気流路を形成して、吸込んだ空気を一端上方向に流して水分を取り除いた後、車両下部に搭載したバッテリに導入する構造が提案されている（例えば、特許文献２参照）。   In addition, in an electric vehicle that cools the battery by introducing air outside the vehicle compartment to the battery, in order to prevent moisture from entering the battery, the battery is obliquely moved upward along the lower surface of the hood that stores the motor from the front grille. There has been proposed a structure in which an air flow path is formed in the direction, the sucked air is flowed upward at one end to remove moisture, and then introduced into a battery mounted on the lower part of the vehicle (see, for example, Patent Document 2).

また、バッテリに冷却空気を導入する吸気ダクトの下面に吸気ダクト内に侵入した水分を溜める窪み状の水溜め部を設け、水溜め部に水が溜まると浮力によって排水流路を解放して水を排出するストッパを設けることが提案されている（例えば、特許文献３参照）   In addition, a concave water reservoir is provided on the lower surface of the intake duct that introduces cooling air into the battery, and accumulates water that has entered the intake duct. When water accumulates in the water reservoir, the drainage flow path is released by buoyancy to release water. It has been proposed to provide a stopper that discharges water (for example, see Patent Document 3).

特開２００４−１４２５２４号公報JP 2004-142524 A 特開平１０−９４５号公報Japanese Patent Laid-Open No. 10-945 特開２０１０−１３２２３２号公報JP 2010-132232 A

ところで、近年、渡河走行を行うオフロード車やクロスカントリー車にも電動駆動方式が取り入れらてきている。これらの車両は、例えば、シートの座面まで水に浸かるような浸水路を渡河走行する場合がある。渡河走行の際には河底の石等の状況が確認できないことが多いので、時によっては、渡河走行中に車両が横転することがある。車両が横転した場合には、特許文献１に記載されたように、単に、吸排気ダクトの吸気口、排気口をタイヤの中心より上方に配置したのみでは、バッテリへの水の侵入を防止することはできない。   By the way, in recent years, an electric drive system has also been adopted for off-road vehicles and cross-country vehicles that travel across the river. These vehicles, for example, may travel across a flooded path that is immersed in water up to the seat surface of the seat. When traveling across the river, it is often impossible to confirm the condition of rocks or the like at the bottom of the river, so in some cases the vehicle may roll over while traveling across the river. When the vehicle rolls over, as described in Patent Document 1, water is prevented from entering the battery simply by arranging the intake and exhaust ports of the intake and exhaust ducts above the center of the tire. It is not possible.

そこで、本発明は、電動車両が浸水路で横転した場合でもバッテリへの水の侵入を抑制できるバッテリ装置を提供することを目的とする。   Then, an object of this invention is to provide the battery apparatus which can suppress the penetration | invasion of the water to a battery, even when an electric vehicle rolls over in a flooding channel.

本発明のバッテリ装置は、バッテリと前記バッテリに冷却空気を送るブロワとを収納する防水ケーシングと、前記防水ケーシングに設けられ、前記ブロワの空気吸込口に連通する第１開口と、前記防水ケーシングに設けられ、前記バッテリの空気排出口に連通する第２開口と、前記第１開口に接続されて前記第１開口と反対側の吸気口から空気を吸入する吸気ダクトと、前記第２開口に接続されて前記第２開口と反対側の排気口から空気を排気する排気ダクトと、を備える車載用バッテリ装置であって、前記第１開口と前記第２開口とは、それぞれ車室の内壁面の近傍に配置され、前記吸気口は、車室上方で前記第１開口と左右方向反対側の内壁面の近傍に配置され、前記排気口は、車室上方で前記第２開口と左右方向反対側の内壁面の近傍に配置されていること、を特徴とする。   The battery device of the present invention includes a waterproof casing that houses a battery and a blower that sends cooling air to the battery, a first opening that is provided in the waterproof casing and communicates with an air suction port of the blower, and the waterproof casing. A second opening that communicates with an air discharge port of the battery, an intake duct that is connected to the first opening and draws air from an intake port opposite to the first opening, and is connected to the second opening And an exhaust duct for exhausting air from an exhaust port on the opposite side of the second opening, wherein the first opening and the second opening are respectively provided on an inner wall surface of a vehicle compartment. The exhaust port is disposed in the vicinity of the inner wall on the opposite side of the first opening above the vehicle interior, and the exhaust port is disposed on the opposite side of the second opening above the vehicle interior. Near the inner wall It is disposed, characterized by.

本発明は、電動車両が浸水路で横転した場合でもバッテリへの水の侵入を抑制することができるバッテリ装置を提供することができる。   The present invention can provide a battery device that can suppress the intrusion of water into the battery even when the electric vehicle rolls over in a flooded channel.

本発明の実施形態のバッテリ装置を搭載した電動車両を示す斜視図である。It is a perspective view which shows the electric vehicle carrying the battery apparatus of embodiment of this invention. 本発明の実施形態のバッテリ装置に用いられる電池パックの斜視図である。It is a perspective view of the battery pack used for the battery apparatus of embodiment of this invention. 本発明の実施形態のバッテリ装置を搭載した電動車両の側面図である。It is a side view of the electric vehicle carrying the battery device of embodiment of this invention. 本発明の実施形態のバッテリ装置を搭載した電動車両を車両正面側から見た断面図である。It is sectional drawing which looked at the electric vehicle carrying the battery apparatus of embodiment of this invention from the vehicle front side. 本発明の実施形態のバッテリ装置の斜視図である。It is a perspective view of the battery device of the embodiment of the present invention. 本発明の実施形態のバッテリ装置を搭載した電動車両が渡河走行中に左に横転した状況を示す斜視図である。It is a perspective view showing the situation where the electric vehicle carrying the battery device of the embodiment of the present invention rolls over to the left while traveling across the river. 図６に示す状態において、電動車両に搭載したバッテリ装置の一部が水没した状態を示す斜視図である。FIG. 7 is a perspective view illustrating a state in which a part of the battery device mounted on the electric vehicle is submerged in the state illustrated in FIG. 6. 本発明の実施形態のバッテリ装置を搭載した電動車両が渡河走行中に右に横転した状況を示す斜視図である。It is a perspective view showing the situation where the electric vehicle carrying the battery device of the embodiment of the present invention rolls over to the right while traveling across the river. 図８に示す状態において、電動車両に搭載したバッテリ装置の一部が水没した状態を示す斜視図である。FIG. 9 is a perspective view illustrating a state in which a part of the battery device mounted on the electric vehicle is submerged in the state illustrated in FIG. 8. 本発明の他の実施形態のバッテリ装置の斜視図である。It is a perspective view of the battery apparatus of other embodiment of this invention. 図１０に示すバッテリ装置の側面図である。It is a side view of the battery apparatus shown in FIG. 図１０、１１に示すバッテリ装置に用いられる逆止弁付水抜きグロメットの断面図である。It is sectional drawing of the drain grommet with a non-return valve used for the battery apparatus shown to FIG. 本発明の他の実施形態のバッテリ装置を搭載した電動車両を車両正面側から見た断面図である。It is sectional drawing which looked at the electric vehicle carrying the battery apparatus of other embodiment of this invention from the vehicle front side. 本発明の他の実施形態のバッテリ装置を示す斜視図である。It is a perspective view which shows the battery apparatus of other embodiment of this invention.

以下、図面を参照しながら本発明の実施形態について説明する。図１，２，５に示すように、本実施形態の車載用のバッテリ装置１０は、電動車両３０の車室３５に搭載され、内部にバッテリ２５とブロワ２１とを収納する防水ケーシング１１と、防水ケーシング１１の第１開口１２に接続される吸気ダクト１４と、防水ケーシング１１の第２開口１３に接続される排気ダクト１５とを備えている。なお、各図において、上下、前後左右の表示は、電動車両３０、或いは車室３５の上下、前後左右方向を示す。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1, 2, and 5, the in-vehicle battery device 10 according to the present embodiment is mounted in a passenger compartment 35 of the electric vehicle 30, and includes a waterproof casing 11 that houses a battery 25 and a blower 21 therein. An intake duct 14 connected to the first opening 12 of the waterproof casing 11 and an exhaust duct 15 connected to the second opening 13 of the waterproof casing 11 are provided. In addition, in each figure, the display of up and down, front and rear, right and left shows the up and down, front and rear, right and left directions of the electric vehicle 30 or the vehicle interior 35.

図２に示すように、防水ケーシング１１の第１開口１２とブロワ２１の空気吸込口２２との間は第１接続ダクト２４によって接続されている。また、ブロワ２１の空気吐出口２３とバッテリ２５の冷却空気入口との間は第２接続ダクト２７で接続され、バッテリ２５の空気排出口２６と防水ケーシング１１の第２開口１３との間は第３接続ダクト２８で接続されている。防水ケーシング１１と内部に収容されたバッテリ２５、ブロワ２１、第１〜第３接続ダクト２４，２７，２８とは電池パック２０を構成する。   As shown in FIG. 2, the first opening 12 of the waterproof casing 11 and the air inlet 22 of the blower 21 are connected by a first connection duct 24. Further, the air discharge port 23 of the blower 21 and the cooling air inlet of the battery 25 are connected by a second connection duct 27, and the air discharge port 26 of the battery 25 and the second opening 13 of the waterproof casing 11 are connected to each other. The three connection ducts 28 are connected. The waterproof casing 11, the battery 25, the blower 21, and the first to third connection ducts 24, 27, and 28 housed inside constitute a battery pack 20.

図１に示す吸気ダクト１４の吸気口１６から吸い込まれた車室３５内の空気は、防水ケーシング１１の第１開口１２から第１接続ダクト２４を通ってブロワ２１に吸い込まれ、ブロワ２１で加圧された空気は冷却空気として第２接続ダクト２７からバッテリ２５に流入し、バッテリ２５を冷却して温度が上昇した空気は、バッテリ２５の空気排出口２６から第３接続ダクト２８を通って防水ケーシング１１の第２開口１３に流れ、第２開口１３から排気ダクト１５に流出し、図１に示す排気ダクト１５の排気口１７から車室３５の中に排気される。   Air in the passenger compartment 35 sucked from the intake port 16 of the intake duct 14 shown in FIG. 1 is sucked into the blower 21 through the first connection duct 24 from the first opening 12 of the waterproof casing 11 and added by the blower 21. The compressed air flows into the battery 25 from the second connection duct 27 as cooling air, and the air whose temperature has risen by cooling the battery 25 is waterproofed from the air outlet 26 of the battery 25 through the third connection duct 28. It flows into the second opening 13 of the casing 11, flows out of the second opening 13 into the exhaust duct 15, and is exhausted into the vehicle compartment 35 from the exhaust port 17 of the exhaust duct 15 shown in FIG.

図３，４に示すように、電池パック２０は、電動車両３０の車室３５の後席シート３２の下に、防水ケーシング１１の第１開口１２、第２開口１３が車室３５の左側の内壁近傍となるように搭載されている。図１、図３〜５に示すように、吸気ダクト１４は、第１開口１２から車室３５の天井３８の近くまで上方向に延びた後、車室３５の天井３８に沿って電動車両３０の右方向に向かって略水平に車室３５の右側の内壁近傍まで延び、その後、車室３５の天井３８に沿って電動車両３０の前方向に向かって延びて、吸気口１６が電動車両３０の前方向に向かって開口するよう配索されている。なお、吸気ダクト１４は、は、車室３５の右側の内壁近傍まで延びた後、天井３８に対して下向きに延びて吸気口１６が電動車両３０の上方以外に開口するよう配索されるようにしてもよい。また、排気ダクト１５は、第２開口１３から車室３５の天井３８の近くまで上方向に延びた後、車室３５の天井３８に沿って電動車両３０の右方向に向かって略水平に車室３５の右側の内壁近傍まで延び、その後、車室３５の天井３８に沿って電動車両３０の後ろ方向に向かって延びて、排気口１７が電動車両３０の後ろ方向に向かって開口するよう配索されている。なお、排気ダクト１５は、車室３５の右側の内壁近傍まで延びた後、天井３８に対して下向きに延びて排気口１７が電動車両３０の上方以外に開口するよう配索されるようにしてもよい。   As shown in FIGS. 3 and 4, the battery pack 20 has a first opening 12 and a second opening 13 of the waterproof casing 11 on the left side of the passenger compartment 35 under the rear seat 32 of the passenger compartment 35 of the electric vehicle 30. It is mounted so as to be near the inner wall. As shown in FIGS. 1 and 3 to 5, the intake duct 14 extends upward from the first opening 12 to the vicinity of the ceiling 38 of the passenger compartment 35, and then the electric vehicle 30 along the ceiling 38 of the passenger compartment 35. Extends substantially horizontally to the vicinity of the inner wall on the right side of the passenger compartment 35, and then extends toward the front of the electric vehicle 30 along the ceiling 38 of the passenger compartment 35. It is routed so as to open toward the front. The intake duct 14 extends to the vicinity of the inner wall on the right side of the passenger compartment 35 and then extends downward with respect to the ceiling 38 so that the intake port 16 is opened beyond the upper side of the electric vehicle 30. It may be. The exhaust duct 15 extends upward from the second opening 13 to the vicinity of the ceiling 38 of the passenger compartment 35, and then extends substantially horizontally toward the right direction of the electric vehicle 30 along the ceiling 38 of the passenger compartment 35. It extends to the vicinity of the inner wall on the right side of the chamber 35, and then extends toward the rear side of the electric vehicle 30 along the ceiling 38 of the passenger compartment 35 so that the exhaust port 17 opens toward the rear direction of the electric vehicle 30. It has been searched. The exhaust duct 15 extends to the vicinity of the inner wall on the right side of the passenger compartment 35, and then extends downward with respect to the ceiling 38 so that the exhaust port 17 is opened so as to open other than above the electric vehicle 30. Also good.

図１〜５を参照して説明したように、本実施形態のバッテリ装置１０は、防水ケーシング１１の第１開口１２と第２開口１３とが車室３５の下部の左側の内壁近傍に配置され、吸気口１６と排気口１７とが車室３５の天井３８に近い高さで車室３５の右側の内壁近傍に配置されている。つまり、吸気口１６は、車室３５の上方で第１開口１２と左右方向反対側の車室３５の内壁面の近傍に配置され、排気口１７は、車室３５の上方で第２開口１３と左右方向反対側の車室３５の内壁面の近傍に配置されている。   As described with reference to FIGS. 1 to 5, in the battery device 10 of the present embodiment, the first opening 12 and the second opening 13 of the waterproof casing 11 are arranged in the vicinity of the inner wall on the left side of the lower portion of the passenger compartment 35. The intake port 16 and the exhaust port 17 are arranged in the vicinity of the inner wall on the right side of the passenger compartment 35 at a height close to the ceiling 38 of the passenger compartment 35. That is, the intake port 16 is disposed in the vicinity of the inner wall surface of the vehicle compartment 35 on the opposite side to the first opening 12 above the vehicle interior 35, and the exhaust port 17 is disposed above the vehicle interior 35 in the second opening 13. It is arrange | positioned in the vicinity of the inner wall face of the compartment 35 on the opposite side to the left-right direction.

このように構成されたバッテリ装置１０を搭載した電動車両３０は、バッテリ装置１０の吸気口１６、排気口１７が電動車両３０の天井３８近傍に配置されているので、図３，４に二点鎖線で示すように、水面５１が電動車両３０の前席シート３１に座っている乗員６０の腰あたりまで、或いは、後席シート３２の座面を超える程度まで、水没した状態で河川５５を渡る渡河走行を行う場合でも、渡河走行中に水が電池パック２０の中に流入することはない。   In the electric vehicle 30 equipped with the battery device 10 configured in this manner, the intake port 16 and the exhaust port 17 of the battery device 10 are disposed in the vicinity of the ceiling 38 of the electric vehicle 30. As indicated by the chain line, the water surface 51 crosses the river 55 in the submerged state until it reaches the waist of the occupant 60 sitting on the front seat 31 of the electric vehicle 30 or exceeds the seat surface of the rear seat 32. Even when crossing the river, water does not flow into the battery pack 20 during the crossing.

次に、図６〜９を参照しながら、図１〜５を参照して説明したバッテリ装置１０を搭載した電動車両３０が渡河走行時に横転した場合でも電池パック２０の内部に水が浸入してこないことを説明する。図６に示すように、渡河走行中に電動車両３０が左側に横転した場合、電動車両３０の左半分が河川５５の中に水没する。つまり、電動車両３０の左半分が水面５１の下になってしまう。この場合、乗員６０は、車両の右側外壁面上に立っている。   Next, even when the electric vehicle 30 equipped with the battery device 10 described with reference to FIGS. 1 to 5 rolls over during the river crossing with reference to FIGS. Explain that this is not the case. As shown in FIG. 6, when the electric vehicle 30 rolls over to the left side while traveling across the river, the left half of the electric vehicle 30 is submerged in the river 55. That is, the left half of the electric vehicle 30 is below the water surface 51. In this case, the occupant 60 stands on the right outer wall surface of the vehicle.

このように、電動車両３０の左半分が水没すると、搭載されているバッテリ装置１０の左半分も河川５５の中に水没し、図７に示すような状態となる。図７に示すように、水面５１は、電動車両３０の防水ケーシング１１の配置されている前後方向位置における車両外壁から深さＨ１の位置５２まで達し、防水ケーシング１１は位置５２まで水没する。また、吸気ダクト１４、排気ダクト１５も同様に車両外壁から深さＨ１の位置５３まで水没する。しかし、吸気口１６と排気口１７とは電動車両３０の車室３５の右側の内壁近傍に配置されて、水面５１より上に出ているため、吸気口１６、排気口１７から河川５５の水が電池パック２０の内部に侵入することはない。   Thus, when the left half of the electric vehicle 30 is submerged, the left half of the mounted battery device 10 is also submerged in the river 55, resulting in a state as shown in FIG. As shown in FIG. 7, the water surface 51 reaches the position 52 at the depth H <b> 1 from the vehicle outer wall in the front-rear direction position where the waterproof casing 11 of the electric vehicle 30 is disposed, and the waterproof casing 11 is submerged to the position 52. Similarly, the intake duct 14 and the exhaust duct 15 are submerged from the outer wall of the vehicle to a position 53 having a depth H1. However, since the intake port 16 and the exhaust port 17 are disposed in the vicinity of the inner wall on the right side of the passenger compartment 35 of the electric vehicle 30 and protrude above the water surface 51, the water in the river 55 is discharged from the intake port 16 and the exhaust port 17. Does not enter the inside of the battery pack 20.

一方、図８に示すように、渡河走行中に電動車両３０が右側に横転した場合、電動車両３０の右半分が河川５５の中に水没する。この場合、乗員６０は、車両の左側外壁面上に立っている。   On the other hand, as shown in FIG. 8, when the electric vehicle 30 rolls over to the right during traveling across the river, the right half of the electric vehicle 30 is submerged in the river 55. In this case, the occupant 60 stands on the left outer wall surface of the vehicle.

このように、電動車両３０の右半分が水没すると、搭載されているバッテリ装置１０の右半分も河川５５の中に水没し、図９に示すような状態となる。図９に示すように、水面５１は、電動車両３０の防水ケーシング１１の配置されている前後方向位置における車両外壁から深さＨ２の位置５６まで達し、防水ケーシング１１は位置５６まで水没する。また、吸気ダクト１４、排気ダクト１５も同様に車両外壁から深さＨ２の位置５７まで水没する。この場合、吸気口１６と排気口１７も水没するので、吸気ダクト１４、排気ダクト１５の内部に河川５５の水が浸入してくる。しかし、防水ケーシング１１の第１開口１２と第２開口１３とは電動車両３０の車室３５の左側の内壁近傍に配置されて、水面５１より上に出ているため、吸気口１６、排気口１７から吸気ダクト１４、排気ダクト１５の中に侵入した水は、第１開口１２、第２開口１３を通って電池パック２０の内部に侵入することはない。   Thus, when the right half of the electric vehicle 30 is submerged, the right half of the mounted battery device 10 is also submerged in the river 55, resulting in the state shown in FIG. As shown in FIG. 9, the water surface 51 reaches the position 56 at the depth H <b> 2 from the vehicle outer wall in the front-rear direction position where the waterproof casing 11 of the electric vehicle 30 is disposed, and the waterproof casing 11 is submerged to the position 56. Similarly, the intake duct 14 and the exhaust duct 15 are submerged from the outer wall of the vehicle to a position 57 having a depth H2. In this case, since the intake port 16 and the exhaust port 17 are also submerged, the water of the river 55 enters the inside of the intake duct 14 and the exhaust duct 15. However, since the first opening 12 and the second opening 13 of the waterproof casing 11 are disposed in the vicinity of the inner wall on the left side of the passenger compartment 35 of the electric vehicle 30 and protrude above the water surface 51, the intake port 16 and the exhaust port The water that has entered the intake duct 14 and the exhaust duct 15 from 17 does not enter the inside of the battery pack 20 through the first opening 12 and the second opening 13.

以上説明したように、本実施形態のバッテリ装置１０は、防水ケーシング１１の第１開口１２と第２開口１３とが車室３５の左側の内壁近傍に配置され、吸気口１６と排気口１７とが車室３５の天井３８に近い高さで車室３５の右側の内壁近傍に配置されているので、電動車両３０が渡河走行中に左に横転した場合には、河川５５の水面５１は車室３５の右側の内壁近傍の吸気口１６、排気口１７まで達せず、電動車両３０が右に横転した場合には、河川５５の水面５１は車室３５の左側の内壁近傍に配置されている第１開口１２、第２開口１３まで達しない。このため、渡河走行中に左右どちらに横転した場合でも河川５５の水が電池パック２０の中に侵入することを防止することができる。   As described above, in the battery device 10 of the present embodiment, the first opening 12 and the second opening 13 of the waterproof casing 11 are arranged near the inner wall on the left side of the passenger compartment 35, and the intake port 16 and the exhaust port 17 are arranged. Is located near the ceiling 38 of the passenger compartment 35 and in the vicinity of the inner wall on the right side of the passenger compartment 35. Therefore, when the electric vehicle 30 rolls over to the left while traveling across the river, the water surface 51 of the river 55 When the electric vehicle 30 rolls over to the right without reaching the intake port 16 and the exhaust port 17 near the inner wall on the right side of the chamber 35, the water surface 51 of the river 55 is arranged near the inner wall on the left side of the vehicle chamber 35. It does not reach the first opening 12 and the second opening 13. For this reason, it is possible to prevent the water in the river 55 from entering the battery pack 20 even when the vehicle rolls over to the left or right during the crossing.

次に、図１０〜１２を参照して本発明の他の実施形態について説明する。先に図１〜１９を参照して説明したのと同様の部分には同様の符号を付して説明は省略する。先に、図９を参照して説明したように、電動車両３０が右に横転した場合、河川５５の水は電池パック２０には侵入しないものの、吸気ダクト１４、排気ダクト１５の中に侵入してくる。このため、横転した電動車両３０を図１、３，４に示す様な通常の状態に復帰させた場合、吸気ダクト１４、排気ダクト１５の内部に滞留した水が第１開口１２、第２開口１３から電池パック２０の中に侵入する可能性がある。そこで、本実施形態のバッテリ装置７０では、図１０、１１に示すように、吸気ダクト１４と第１開口１２との接続部分に第１開口１２から下向きに凸に湾曲した水溜め部７１を設け、排気ダクト１５と第２開口１３との接続部分に第２開口１３から下向きに凸に湾曲した水溜め部７２を設け、車室３５の床板３３に取り付けられた逆止弁付水抜きグロメット８０、８０と水溜め部７１，７２との間をそれぞれドレン配管７３，７４で接続している。図１１に示すように、吸気ダクト１４の水溜め部７１の上部内壁面は、第１開口１２の上端よりも上下方向距離Ｄ１だけ低く、吸気ダクト１４の水溜め部７１の下部内壁面は、第１開口１２の下端よりも上下方向距離Ｄ２だけ低くなっている。また、排気ダクト１５の水溜め部７２の上部内壁面は、第２開口１３の上端よりも上下方向距離Ｄ３だけ低く、排気ダクト１５の水溜め部７２の下部内壁面は、第２開口１３の下端よりも上下方向距離Ｄ４だけ低くなっている。   Next, another embodiment of the present invention will be described with reference to FIGS. The same parts as those described above with reference to FIGS. 1 to 19 are denoted by the same reference numerals, and description thereof is omitted. As described above with reference to FIG. 9, when the electric vehicle 30 rolls over to the right, the water in the river 55 does not enter the battery pack 20, but enters the intake duct 14 and the exhaust duct 15. Come. Therefore, when the overturned electric vehicle 30 is returned to the normal state as shown in FIGS. 1, 3, and 4, the water staying in the intake duct 14 and the exhaust duct 15 becomes the first opening 12 and the second opening. 13 may enter the battery pack 20. Therefore, in the battery device 70 of the present embodiment, as shown in FIGS. 10 and 11, a water reservoir portion 71 that is curved downward and convex from the first opening 12 is provided at a connection portion between the intake duct 14 and the first opening 12. A drainage grommet 80 with a check valve attached to the floor plate 33 of the passenger compartment 35 is provided with a water reservoir 72 that is curved downward and convex from the second opening 13 at the connection portion between the exhaust duct 15 and the second opening 13. 80 and water reservoirs 71 and 72 are connected by drain pipes 73 and 74, respectively. As shown in FIG. 11, the upper inner wall surface of the water reservoir portion 71 of the intake duct 14 is lower than the upper end of the first opening 12 by a vertical distance D1, and the lower inner wall surface of the water reservoir portion 71 of the intake duct 14 is The vertical distance D2 is lower than the lower end of the first opening 12. The upper inner wall surface of the water reservoir 72 of the exhaust duct 15 is lower than the upper end of the second opening 13 by the vertical distance D3, and the lower inner wall surface of the water reservoir 72 of the exhaust duct 15 is lower than the second opening 13. The vertical distance D4 is lower than the lower end.

これにより、図１１中に示す破線のように、吸気ダクト１４、排気ダクト１５の中に滞留した水が電池パック２０に向かって流れてきても、その水を各水溜め部７１，７２から各ドレン配管７３，７４を通って各逆止弁付水抜きグロメット８０に落下させ、各逆止弁付水抜きグロメット８０から床板３３の下に設けられた排水溝３９を通して車室３５の外に排出することができる。   Thus, even if water staying in the intake duct 14 and the exhaust duct 15 flows toward the battery pack 20 as indicated by broken lines in FIG. It is dropped into drainage grommets 80 with check valves through drain pipes 73, 74, and discharged from the interior 35 through drainage grooves 39 provided under the floor plate 33 from the drainage grommets 80 with check valves. can do.

図１２に示すように、逆止弁付水抜きグロメット８０は、入口開口８２と出口開口８３とを有する円形でパンケーキ状のケーシング８１と、ケーシング８１の内部に構成された弁座８４と、回転軸８６を中心に回転自在に取り付けられた弁体８５とを備えている。ケーシング８１は車室３５の床板３３に取り付けられると、床板３３の上面に入口開口８２が位置し、床板３３の下面に出口開口８３が位置するように構成されている。弁体８５は図示しないコイルスプリングで弁座８４に押し付けられており、ドレン配管７３，７４を通って水が落下してくると水の重みによって弁体８５が開いて水を入口開口８２から出口開口８３に向かって流出させる。逆止弁付水抜きグロメット８０は、出口開口８３から入口開口８２に向かっては流体を流さないので、外部の水或いは空気が逆止弁付水抜きグロメット８０を通って電池パック２０の内部に侵入することはない。なお、吸気ダクト１４、排気ダクト１５に滞留した水を排出した後、ブロワ２１を回転させた場合、排気ダクト１５の水溜め部７２の圧力は略大気圧で逆止弁付水抜きグロメット８０を開とするほど高くならないので、バッテリ２５を冷却した空気が逆止弁付水抜きグロメット８０を通って外部に流出することはない。   As shown in FIG. 12, a drain grommet 80 with a check valve includes a circular pancake-like casing 81 having an inlet opening 82 and an outlet opening 83, a valve seat 84 configured inside the casing 81, And a valve body 85 attached to be rotatable about a rotation shaft 86. When the casing 81 is attached to the floor plate 33 of the passenger compartment 35, the inlet opening 82 is positioned on the upper surface of the floor plate 33, and the outlet opening 83 is positioned on the lower surface of the floor plate 33. The valve body 85 is pressed against the valve seat 84 by a coil spring (not shown). When water falls through the drain pipes 73 and 74, the valve body 85 is opened by the weight of the water, and the water is discharged from the inlet opening 82. It flows out toward the opening 83. Since the drain grommet 80 with check valve does not flow fluid from the outlet opening 83 toward the inlet opening 82, external water or air passes through the drain grommet 80 with check valve and enters the battery pack 20. There is no invasion. In addition, when the blower 21 is rotated after the water staying in the intake duct 14 and the exhaust duct 15 is discharged, the pressure of the water reservoir 72 of the exhaust duct 15 is approximately atmospheric pressure, and the drain grommet 80 with a check valve is turned on. Since it does not become so high that it is opened, the air that has cooled the battery 25 does not flow out through the drain grommet 80 with a check valve.

本実施形態のバッテリ装置７０は、先に図１〜９を参照して説明した実施形態のバッテリ装置１０と同様の効果に加え、渡河走行中の横転により吸気ダクト１４、排気ダクト１５の中に水が滞留した場合であっても、その水が電池パック２０の中に流入することを防止することができる。   In addition to the same effects as the battery device 10 of the embodiment described above with reference to FIGS. 1 to 9, the battery device 70 of the present embodiment is brought into the intake duct 14 and the exhaust duct 15 by overturning while traveling across the river. Even if the water stays, the water can be prevented from flowing into the battery pack 20.

次に、図１３を参照して他の実施形態のバッテリ装置９０について説明する。先に図１〜１２を参照して説明したのと同様の部分には同様の符号を付して説明は省略する。   Next, a battery device 90 according to another embodiment will be described with reference to FIG. Parts similar to those described above with reference to FIGS. 1 to 12 are denoted by the same reference numerals, and description thereof is omitted.

図１３に示すバッテリ装置９０は、吸気ダクト１４、排気ダクト１５の左右方向に延びる部分に吸気口１６、排気口１７が下方となるような傾斜をつけたものである。このようにすることで、渡河走行中の横転により吸気ダクト１４、排気ダクト１５の中に水が滞留した場合であっても、電動車両３０の復帰の際に吸気口１６、排気口１７に滞留していた水を車室３５の内部に排出させることができるので、吸気ダクト１４、排気ダクト１５の内部に滞留した水が電池パック２０の中に侵入することを防止することができる。   A battery device 90 shown in FIG. 13 is configured such that portions of the intake duct 14 and the exhaust duct 15 extending in the left-right direction are inclined so that the intake port 16 and the exhaust port 17 are located downward. In this way, even when water stays in the intake duct 14 and the exhaust duct 15 due to a rollover while traveling across the river, it stays in the intake port 16 and the exhaust port 17 when the electric vehicle 30 returns. Since the water that has been discharged can be discharged into the passenger compartment 35, it is possible to prevent the water remaining in the intake duct 14 and the exhaust duct 15 from entering the battery pack 20.

次に、図１４を参照して他の実施形態のバッテリ装置９５について説明する。先に図１〜１２を参照して説明したのと同様の部分には同様の符号を付して説明は省略する。   Next, a battery device 95 according to another embodiment will be described with reference to FIG. Parts similar to those described above with reference to FIGS. 1 to 12 are denoted by the same reference numerals, and description thereof is omitted.

図１４に示すバッテリ装置９５は、防水ケーシング１１の第１開口１２が車室３５の右側の内壁近傍に配置され、吸気口１６が車室３５の天井３８に近い高さで車室３５の左側の内壁近傍に配置され、防水ケーシング１１の第２開口１３が車室３５の左側の内壁近傍に配置され、排気口１７が車室３５の天井３８に近い高さで車室３５の右側の内壁近傍に配置されている。このため、電動車両３０が渡河走行中に左に横転した場合には、河川５５の水面は第１開口１２、排気口１７のいずれにも達せず、電動車両３０が右に横転した場合には、河川５５の水面５１は吸気口１６、第２開口１３のいずれにも達しない。このため、渡河走行中に左右どちらに横転した場合でも河川５５の水が電池パック２０の中に侵入することを防止することができる。上記の効果は、吸気口１６が車室３５の上方で第１開口１２と左右方向反対側の車室３５の内壁面の近傍に配置され、排気口１７が車室３５の上方で第２開口１３と左右方向反対側の車室３５の内壁面の近傍に配置されていることによるものであるから、図１４とは逆に、防水ケーシング１１の第２開口１３を室３５の右側の内壁近傍に配置し、排気口１７を車室３５の天井３８に近い高さで車室３５の左側の内壁近傍に配置し、防水ケーシング１１の第１開口１２を車室３５の左側の内壁近傍に配置し、吸気口１６を車室３５の天井３８に近い高さで車室３５の右側の内壁近傍に配置するようにしてもよい。   In the battery device 95 shown in FIG. 14, the first opening 12 of the waterproof casing 11 is disposed in the vicinity of the inner wall on the right side of the passenger compartment 35, and the intake port 16 is at a height close to the ceiling 38 of the passenger compartment 35 and the left side of the passenger compartment 35. The second opening 13 of the waterproof casing 11 is disposed in the vicinity of the inner wall on the left side of the passenger compartment 35, and the exhaust port 17 is at a height close to the ceiling 38 of the passenger compartment 35 on the right inner wall of the passenger compartment 35. It is arranged in the vicinity. For this reason, when the electric vehicle 30 rolls over to the left while traveling across the river, the water surface of the river 55 does not reach either the first opening 12 or the exhaust port 17, and when the electric vehicle 30 rolls over to the right The water surface 51 of the river 55 does not reach either the intake port 16 or the second opening 13. For this reason, it is possible to prevent the water in the river 55 from entering the battery pack 20 even when the vehicle rolls over to the left or right during the crossing. The above effect is that the intake port 16 is disposed above the vehicle interior 35 in the vicinity of the inner wall surface of the vehicle interior 35 opposite to the first opening 12 and the exhaust port 17 is disposed above the vehicle interior 35 in the second opening. 13, the second opening 13 of the waterproof casing 11 is disposed in the vicinity of the right inner wall of the chamber 35, contrary to FIG. 14. The exhaust port 17 is disposed near the inner wall on the left side of the passenger compartment 35 at a height close to the ceiling 38 of the passenger compartment 35, and the first opening 12 of the waterproof casing 11 is disposed near the inner wall on the left side of the passenger compartment 35. The air inlet 16 may be disposed near the inner wall on the right side of the passenger compartment 35 at a height close to the ceiling 38 of the passenger compartment 35.

１０，７０，９０，９５ バッテリ装置、１１ 防水ケーシング、１２ 第１開口、１３ 第２開口、１４ 吸気ダクト、１５ 排気ダクト、１６ 吸気口、１７ 排気口、２０ 電池パック、２１ ブロワ、２２ 空気吸込口、２３ 空気吐出口、２４，２７，２８ 接続ダクト、２５ バッテリ、２６ 空気排出口、３０ 電動車両、３１ 前席シート、３２ 後席シート、３３ 床板、３５ 車室、３８ 天井、３９ 排水溝、５１ 水面、５２，５３，５６，５７ 位置、５５ 河川、６０ 乗員、７１，７２水溜め部、７３，７４ ドレン配管、８０ グロメット、８１ ケーシング、８２ 入口開口、８３ 出口開口、８４ 弁座、８５ 弁体、８６ 回転軸。   10, 70, 90, 95 Battery device, 11 Waterproof casing, 12 First opening, 13 Second opening, 14 Intake duct, 15 Exhaust duct, 16 Inlet, 17 Exhaust, 20 Battery pack, 21 Blower, 22 Air suction 23, Air outlet, 24, 27, 28 Connection duct, 25 Battery, 26 Air outlet, 30 Electric vehicle, 31 Front seat, 32 Rear seat, 33 Floor board, 35 Car compartment, 38 Ceiling, 39 Drain , 51 water surface, 52, 53, 56, 57 position, 55 river, 60 crew, 71, 72 water reservoir, 73, 74 drain piping, 80 grommet, 81 casing, 82 inlet opening, 83 outlet opening, 84 valve seat, 85 Valve body, 86 Rotating shaft.

Claims (1)

バッテリと前記バッテリに冷却空気を送るブロワとを収納する防水ケーシングと、
前記防水ケーシングに設けられ、前記ブロワの空気吸込口に連通する第１開口と、
前記防水ケーシングに設けられ、前記バッテリの空気排出口に連通する第２開口と、
前記第１開口に接続されて前記第１開口と反対側の吸気口から空気を吸入する吸気ダクトと、
前記第２開口に接続されて前記第２開口と反対側の排気口から空気を排気する排気ダクトと、を備える車載用バッテリ装置であって、
前記第１開口と前記第２開口とは、それぞれ車室の内壁面の近傍に配置され、
前記吸気口は、車室上方で前記第１開口と左右方向反対側の内壁面の近傍に配置され、
前記排気口は、車室上方で前記第２開口と左右方向反対側の内壁面の近傍に配置されていること、
を特徴とする車載用バッテリ装置。 A waterproof casing for storing a battery and a blower for sending cooling air to the battery;
A first opening provided in the waterproof casing and communicating with an air suction port of the blower;
A second opening provided in the waterproof casing and communicating with an air outlet of the battery;
An intake duct that is connected to the first opening and sucks air from an intake port opposite to the first opening;
An in-vehicle battery device comprising: an exhaust duct connected to the second opening and exhausting air from an exhaust port opposite to the second opening;
The first opening and the second opening are respectively disposed in the vicinity of the inner wall surface of the passenger compartment,
The intake port is disposed in the vicinity of the inner wall surface on the opposite side to the first opening in the left-right direction above the passenger compartment.
The exhaust port is disposed in the vicinity of the inner wall surface on the opposite side to the second opening in the left-right direction above the passenger compartment;
An in-vehicle battery device characterized by the above.
JP2015154906A 2015-08-05 2015-08-05 On-vehicle battery device Pending JP2017030655A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017050055A (en) * 2015-08-31 2017-03-09 トヨタ自動車株式会社 On-vehicle battery device
JP2018030514A (en) * 2016-08-26 2018-03-01 トヨタ自動車株式会社 Battery cooling device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017050055A (en) * 2015-08-31 2017-03-09 トヨタ自動車株式会社 On-vehicle battery device
JP2018030514A (en) * 2016-08-26 2018-03-01 トヨタ自動車株式会社 Battery cooling device

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