JP7306117B2 - Vehicle battery protection structure - Google Patents

Vehicle battery protection structure Download PDF

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Publication number
JP7306117B2
JP7306117B2 JP2019127440A JP2019127440A JP7306117B2 JP 7306117 B2 JP7306117 B2 JP 7306117B2 JP 2019127440 A JP2019127440 A JP 2019127440A JP 2019127440 A JP2019127440 A JP 2019127440A JP 7306117 B2 JP7306117 B2 JP 7306117B2
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vehicle
battery
intake duct
air intake
battery pack
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JP2021011222A (en
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優 原田
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Suzuki Motor Corp
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Suzuki Motor Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Description

本発明は、車両のバッテリ保護構造に関する。 The present invention relates to a vehicle battery protection structure.

自動車等の車両にあっては車両後部の荷室にバッテリが収容されることがある。従来のこの種の技術として、特許文献１に記載されるものが知られている。特許文献１に記載の技術にあっては、後部フロア側のバッテリ収容空間に収容されたバッテリモジュールを、車室内から吸入した空気で冷却し、冷却後のバッテリ収容空間に放出された空気（排気）を、バッテリ収容空間と後部座席の空間とを仕切る仕切部材を介して車室に排気を戻す室内排気流路と、荷室に排気を放出する荷室排気流路とに分岐させている。これにより、特許文献１に記載のものは、排気熱が乗員に与える影響を抑制できる。 2. Description of the Related Art In a vehicle such as an automobile, a battery may be accommodated in a luggage compartment at the rear of the vehicle. As a conventional technique of this kind, the one described in Patent Document 1 is known. In the technique described in Patent Document 1, the battery modules housed in the battery housing space on the rear floor side are cooled by the air sucked from the vehicle interior, and the air (exhaust air) released into the battery housing space after cooling is cooled. ) is branched into an interior exhaust passage for returning the exhaust to the passenger compartment and a luggage compartment exhaust passage for discharging the exhaust to the luggage compartment via a partition member that separates the battery storage space from the rear seat space. As a result, the device described in Patent Document 1 can suppress the influence of the exhaust heat on the occupant.

特許第６３０３０３０号公報Japanese Patent No. 6303030

しかしながら、特許文献１に記載の従来の技術にあっては、車両の後部の荷室を十分に広くできない場合、バッテリモジュールと荷室の壁面との間の空間が狭くなるため、車両が外部から衝撃を受けた場合に、バッテリ周辺部の構造から間接的にバッテリに対して影響を及ぼすおそれがあった。 However, in the conventional technology described in Patent Document 1, if the luggage compartment at the rear of the vehicle cannot be made sufficiently wide, the space between the battery module and the wall surface of the luggage compartment becomes narrow. In the event of an impact, there is a risk that the battery will be indirectly affected by the structure surrounding the battery.

本発明は、上記のような事情に着目してなされたものであり、狭い設置空間にバッテリパックを搭載する場合でも、バッテリモジュールを良好に冷却でき、車両の後突時にバッテリパックを保護することができる車両のバッテリ保護構造を提供することを目的とするものである。 SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances as described above, and it is an object of the present invention to cool a battery module well even when the battery pack is mounted in a narrow installation space, and to protect the battery pack in the event of a rear-end collision of a vehicle. It is an object of the present invention to provide a vehicle battery protection structure capable of

本発明は、複数のバッテリモジュールと、複数の前記バッテリモジュールを収容するバッテリケースと、を有するバッテリパックと、前記バッテリパックが搭載される車体と、を備える車両のバッテリ保護構造であって、前記バッテリパックの車両前後方向の後端部に、空気を内部に導入する吸気導入口が設けられ、前記車体の側部に配置される空気取入口から取入れた空気を前記吸気導入口に導く吸気経路を形成する吸気ダクトが、前記バッテリパックの車両前後方向の後方に設けられ、前記吸気ダクトは、前記車体の側部から車幅方向中央部に向かって延びる第１吸気ダクトと、前記第１吸気ダクトと連結され、前記第１吸気ダクトから受け取った空気を前記吸気導入口から前記バッテリパックの内部に供給する第２吸気ダクトと、を有し、前記第２吸気ダクトは、前記バッテリパックの車両前後方向の後端部に連結される第１連結部と、前記第１連結部と車幅方向に離隔し、前記バッテリパックの車両前後方向の後端部に連結される第２連結部と、前記第１連結部と前記第２連結部とを連絡し、平面視で車両後方に突状に湾曲する湾曲部と、を有し、前記湾曲部は、前記バッテリパックの車両前後方向の後端部との間に上方から前記車体を望む空間である湾曲部前方空間を形成していることを特徴とする。 The present invention provides a battery protection structure for a vehicle comprising: a battery pack having a plurality of battery modules; a battery case housing the plurality of battery modules; and a vehicle body on which the battery pack is mounted. An intake port for introducing air is provided at the rear end of the battery pack in the vehicle front-rear direction , and an intake path guides air taken in from an air intake arranged on the side of the vehicle body to the intake port. is provided behind the battery pack in the vehicle front-rear direction , and the intake duct includes a first intake duct extending from a side portion of the vehicle body toward a center portion in the vehicle width direction; a second air intake duct connected to the duct for supplying air received from the first air intake duct to the inside of the battery pack from the air intake inlet, wherein the second air intake duct is connected to the vehicle of the battery pack. a first connecting portion connected to a rear end portion in the front-rear direction ; a second connecting portion separated from the first connecting portion in the vehicle width direction and connected to a rear end portion of the battery pack in the vehicle front-rear direction ; a curved portion connecting the first coupling portion and the second coupling portion and curving in a projecting shape rearward of the vehicle in a plan view, wherein the curved portion is the rear end of the battery pack in the vehicle front-rear direction; A curved portion front space, which is a space where the vehicle body is viewed from above, is formed between the curved portion and the portion.

このように上記の本発明によれば、狭い設置空間にバッテリパックを搭載する場合でも、バッテリモジュールを良好に冷却でき、車両の後突時にバッテリパックを保護することができる。 As described above, according to the present invention, even when the battery pack is mounted in a narrow installation space, the battery module can be cooled well, and the battery pack can be protected in the event of a rear-end collision of the vehicle.

図１は、本発明の一実施例に係るバッテリ保護構造を備える車両の、車体後部の荷室の平面図である。FIG. 1 is a plan view of a luggage compartment at the rear of the vehicle body of a vehicle equipped with a battery protection structure according to one embodiment of the present invention. 図２は、本発明の一実施例に係るバッテリ保護構造を備える車両の、スペアタイヤを取り外した状態の車体後部の荷室の平面図である。FIG. 2 is a plan view of the luggage compartment at the rear of the vehicle with the spare tire removed, of the vehicle equipped with the battery protection structure according to the embodiment of the present invention. 図３は、本発明の一実施例に係るバッテリ保護構造を備える車両の、スペアタイヤおよびアッパケースを取り外した状態の車体後部の荷室の平面図である。FIG. 3 is a plan view of the luggage compartment at the rear of the vehicle body with the spare tire and the upper case removed in the vehicle equipped with the battery protection structure according to the embodiment of the present invention. 図４は、本発明の一実施例に係るバッテリ保護構造を備える車両の、車体後部の荷室の背面図である。FIG. 4 is a rear view of the luggage compartment at the rear portion of the vehicle body provided with the battery protection structure according to one embodiment of the present invention. 図５は、図２のＶ－Ｖ方向矢視断面図である。5 is a cross-sectional view taken along the line VV in FIG. 2. FIG. 図６は、図２のＶＩ－ＶＩ方向矢視断面図である。6 is a sectional view taken along the line VI-VI in FIG. 2. FIG. 図７は、本発明の一実施例に係るバッテリ保護構造を備える車両の、吸気ダクトの斜視図である。FIG. 7 is a perspective view of an intake duct of a vehicle having a battery protection structure according to one embodiment of the invention. 図８は、本発明の一実施例に係るバッテリ保護構造を備える車両の、吸気ダクトの平面図である。FIG. 8 is a plan view of an air intake duct of a vehicle equipped with a battery protection structure according to an embodiment of the invention. 図９は、本発明の一実施例に係るバッテリ保護構造を備える車両の、吸気ダクトの正面図である。FIG. 9 is a front view of an intake duct of a vehicle equipped with a battery protection structure according to one embodiment of the invention.

本発明の一実施の形態に係る車両のバッテリ保護構造は、複数のバッテリモジュールと、複数のバッテリモジュールを収容するバッテリケースと、を有するバッテリパックと、バッテリパックが搭載される車体と、を備える車両のバッテリ保護構造であって、バッテリパックの所定方向の側端部に、空気を内部に導入する吸気導入口が設けられ、車体の側部に配置される空気取入口から取入れた空気を吸気導入口に導く吸気経路を形成する吸気ダクトが、バッテリパックの所定方向の側方に設けられ、吸気ダクトは、車体の側部から車幅方向中央部に向かって延びる第１吸気ダクトと、第１吸気ダクトと連結され、第１吸気ダクトから受け取った空気を吸気導入口からバッテリパックの内部に供給する第２吸気ダクトと、を有し、第２吸気ダクトは、バッテリパックの所定方向の側端部に連結される第１連結部と、第１連結部と車幅方向に離隔し、バッテリパックの所定方向の側端部に連結される第２連結部と、第１連結部と第２連結部とを連絡し、平面視で所定方向に突状に湾曲する湾曲部と、を有し、湾曲部は、バッテリパックの所定方向の側端部との間に上方から車体を望む空間である湾曲部前方空間を形成していることを特徴とする。これにより、本発明の一実施の形態に係る車両のバッテリ保護構造は、狭い設置空間にバッテリパックを搭載する場合でも、バッテリモジュールを良好に冷却でき、車両の後突時にバッテリパックを保護することができる。 A vehicle battery protection structure according to an embodiment of the present invention includes a battery pack having a plurality of battery modules, a battery case housing the plurality of battery modules, and a vehicle body on which the battery pack is mounted. In the battery protection structure for a vehicle, an air intake port for introducing air is provided at a side end of the battery pack in a predetermined direction, and the air taken in from the air intake port arranged on the side of the vehicle body is taken in. An air intake duct that forms an air intake path leading to the inlet port is provided on the side of the battery pack in a predetermined direction. a second air intake duct that is connected to the first air intake duct and supplies air received from the first air intake duct to the inside of the battery pack from the air intake introduction port, the second air intake duct being on the side of the battery pack in a predetermined direction; a first connecting portion connected to an end portion; a second connecting portion separated from the first connecting portion in the vehicle width direction and connected to a side end portion of the battery pack in a predetermined direction; a curved portion that connects with the connecting portion and curves in a predetermined direction in a plan view, the curved portion being a space between the battery pack and the side end portion of the battery pack in the predetermined direction when the vehicle body is viewed from above; It is characterized by forming a certain curve front space. As a result, the vehicle battery protection structure according to the embodiment of the present invention can cool the battery module satisfactorily even when the battery pack is mounted in a narrow installation space, and protects the battery pack in the event of a rear-end collision of the vehicle. can be done.

以下、本発明の実施例に係る車両のバッテリ保護構造について、図面を用いて説明する。図１から図９において、上下前後左右方向は、車両に設置された状態の車両のバッテリ保護構造の上下前後左右方向とし、車両の前後方向に対して直交する方向が左右方向、車両のバッテリ保護構造の高さ方向が上下方向である。 Hereinafter, a vehicle battery protection structure according to an embodiment of the present invention will be described with reference to the drawings. 1 to 9, the vertical, front, rear, left, and right directions refer to the vertical, front, rear, left, and right directions of the vehicle battery protection structure installed in the vehicle. The height direction of the structure is the vertical direction.

図１から図９は、本発明の一実施例に係る車両のバッテリ保護構造を示す図である。 1 to 9 are diagrams showing a vehicle battery protection structure according to an embodiment of the present invention.

まず、構成を説明する。図１、図４、図５において、車両１は、車体２を備えており、車体２の後部にはリヤシート４が設けられている。また、車体２は、リヤシート４の後方に、リヤフロアパネル２Ａ、左右のサイドパネル２Ｅ、２Ｆおよびリヤパネル２Ｇを有している。リヤフロアパネル２Ａの上方の空間であって、リヤシート４、サイドパネル２Ｅ、２Ｆおよびリヤパネル２Ｇに囲まれた部分は、荷室を構成している。したがって、リヤフロアパネル２Ａは荷室の床面の一部を構成している。 First, the configuration will be explained. 1, 4, and 5, a vehicle 1 has a vehicle body 2, and a rear seat 4 is provided at the rear portion of the vehicle body 2. As shown in FIG. The vehicle body 2 also has a rear floor panel 2A, left and right side panels 2E and 2F, and a rear panel 2G behind the rear seat 4. As shown in FIG. A space above the rear floor panel 2A and surrounded by the rear seat 4, the side panels 2E, 2F and the rear panel 2G constitutes a luggage compartment. Therefore, the rear floor panel 2A forms part of the floor of the luggage compartment.

リヤフロアパネル２Ａには窪み部２Ｂが設けられており、この窪み部２Ｂは、下方に窪んでいる。窪み部２Ｂにはバッテリパック５０およびスペアタイヤ５が収容されている。バッテリパック５０は車両１の図示しないモータに電力を供給する。スペアタイヤ５は、バッテリパック５０の上部に固定されている。窪み部２Ｂは、スペアタイヤ５の上下方向の下半分の部分を収容している。スペアタイヤ５は図示しないカバーによって覆われるようになっている。 A recessed portion 2B is provided in the rear floor panel 2A, and this recessed portion 2B is recessed downward. A battery pack 50 and a spare tire 5 are accommodated in the recess 2B. The battery pack 50 supplies electric power to a motor (not shown) of the vehicle 1 . Spare tire 5 is fixed to the top of battery pack 50 . The recessed portion 2B accommodates the lower half portion of the spare tire 5 in the vertical direction. The spare tire 5 is covered with a cover (not shown).

窪み部２Ｂには、吸気ダクト６０の一部が収容されており、この吸気ダクト６０は、荷室内の左端部の近傍から冷却用の空気を取入れてバッテリパック５０に供給する。
（バッテリパックについて） A portion of an air intake duct 60 is accommodated in the recess 2B, and the air intake duct 60 takes in air for cooling from near the left end of the luggage compartment and supplies it to the battery pack 50 .
(About the battery pack)

図２、図３において、バッテリパック５０は、複数のバッテリモジュール１１、１２、１３、１４と、複数のバッテリモジュール１１、１２、１３、１４を収容するバッテリケース２０と、を有している。 2 and 3, the battery pack 50 has a plurality of battery modules 11, 12, 13, 14 and a battery case 20 that accommodates the plurality of battery modules 11, 12, 13, 14. FIG.

バッテリモジュール１１、１２、１３、１４の内部には、複数のセルが電気的に接続された状態で収容されている。バッテリパック５０の筐体であるバッテリケース２０の後端部５０Ａには、空気を内部に導入する第１吸気導入口２１、第２吸気導入口２２が設けられている。後端部５０Ａは、後方の端部のことを意味しており、本発明における所定方向の側端部に相当する。なお、所定方向は、本実施例で例示する車両前後方向に限定されるものではなく、車幅方向であってもよい。したがって、所定方向の側端部は、車両後方の端部に限定されず、車幅方向の端部も含んでいる。所定方向を車幅方向とする場合、車両１に対するバッテリパック５０の搭載時の姿勢は、図１に示す平面図において時計回りまたは反時計回りに９０度回転して配置した姿勢となる。 A plurality of cells are housed inside the battery modules 11, 12, 13, 14 in an electrically connected state. A rear end portion 50A of the battery case 20, which is a housing for the battery pack 50, is provided with a first intake port 21 and a second intake port 22 for introducing air into the interior. The rear end portion 50A means a rear end portion and corresponds to a side end portion in a predetermined direction in the present invention. Note that the predetermined direction is not limited to the vehicle front-rear direction as exemplified in this embodiment, and may be the vehicle width direction. Therefore, the side end portion in the predetermined direction is not limited to the rear end portion of the vehicle, but also includes the end portion in the vehicle width direction. When the predetermined direction is the vehicle width direction, the posture of the battery pack 50 when mounted on the vehicle 1 is rotated 90 degrees clockwise or counterclockwise in the plan view shown in FIG.

バッテリパック５０の後方には吸気ダクト６０が設けられており、この吸気ダクト６０は第１吸気導入口２１、第２吸気導入口２２に連結されている。吸気ダクト６０は、車体２の側部に配置される空気取入口６０Ａから取入れた空気を第１吸気導入口２１、第２吸気導入口２２に導く吸気経路６０Ｂを形成している。 An intake duct 60 is provided behind the battery pack 50 , and the intake duct 60 is connected to the first intake port 21 and the second intake port 22 . The air intake duct 60 forms an air intake path 60B that guides air taken in from an air intake 60A arranged on the side of the vehicle body 2 to the first air intake 21 and the second air intake 22 .

バッテリケース２０はロアケース３０とアッパケース４０とからなる。ロアケース３０は、バッテリモジュール１１、１２、１３、１４が固定されバッテリモジュール１１、１２、１３、１４の下面および側面を覆っている。アッパケース４０は、ロアケース３０を上方から塞いだ状態で、バッテリモジュール１１、１２、１３、１４の上面を覆っている。 Battery case 20 consists of lower case 30 and upper case 40 . Lower case 30 has battery modules 11 , 12 , 13 , 14 fixed thereto and covers the lower surfaces and side surfaces of battery modules 11 , 12 , 13 , 14 . Upper case 40 covers upper surfaces of battery modules 11 , 12 , 13 , and 14 while closing lower case 30 from above.

車体２におけるロアケース３０の後方にはロアケース固定部２Ｃが配置されており、ロアケース３０は、ロアケース固定部２Ｃにおいて車体２に固定されている。 A lower case fixing portion 2C is arranged behind the lower case 30 in the vehicle body 2, and the lower case 30 is fixed to the vehicle body 2 at the lower case fixing portion 2C.

車体２におけるアッパケース４０の後方にはアッパケース固定部２Ｄが配置されており、アッパケース４０は、アッパケース固定部２Ｄにおいて車体２に固定されている。 An upper case fixing portion 2D is arranged behind the upper case 40 in the vehicle body 2, and the upper case 40 is fixed to the vehicle body 2 at the upper case fixing portion 2D.

バッテリパック５０の上方には、車載部材としてのスペアタイヤ５が、その中心軸５Ａを垂直に立てた姿勢で配置されている。 Above the battery pack 50, a spare tire 5 as an in-vehicle member is arranged with its central axis 5A standing vertically.

バッテリパック５０の上面には、スペアタイヤ５を支持する第２ブラケット８２が設けられており、第２ブラケット８２は、上方に突形状に形成されている。第２ブラケット８２の上端部はスペアタイヤ５の中心部と連結されている。 A second bracket 82 that supports the spare tire 5 is provided on the upper surface of the battery pack 50, and the second bracket 82 is formed in an upwardly projecting shape. The upper end of the second bracket 82 is connected with the central portion of the spare tire 5 .

図６において、アッパケース４０の下面には、車両前後方向に延びる車幅方向で一対の第１補強部材７１が、スポット溶接等によって固定されている。 In FIG. 6, a pair of first reinforcing members 71 extending in the longitudinal direction of the vehicle are fixed to the lower surface of the upper case 40 by spot welding or the like in the vehicle width direction.

図３において、バッテリパック５０は、隣り合うバッテリモジュール１１、１２、１３、１４の間に空気通路５１、５２を有している。空気通路５１、５２には、吸気ダクト６０により導かれた空気が流通している。空気通路５１、５２は空気をバッテリモジュール１１、１２、１３、１４に供給している。 In FIG. 3 , the battery pack 50 has air passages 51 and 52 between adjacent battery modules 11 , 12 , 13 and 14 . Air guided by an intake duct 60 flows through the air passages 51 and 52 . Air passages 51 , 52 supply air to battery modules 11 , 12 , 13 , 14 .

図２、図３、図６において、第１補強部材７１（図６参照）は、隣り合うバッテリモジュール１１、１２、１３、１４の間（図２参照）に、空気通路５１、５２（図３参照）に沿って配置されている。 2, 3, and 6, the first reinforcing member 71 (see FIG. 6) is provided between the adjacent battery modules 11, 12, 13, and 14 (see FIG. 2) between the air passages 51 and 52 (see FIG. 3). ) are arranged along the

図２、図６において、アッパケース４０の上面には、第１ブラケット８１が設けられている。第１ブラケット８１は、第１補強部材７１に対応する位置に配置されている。第２ブラケット８２の下端部には２つの第１ブラケット８１が連結されている。第２ブラケット８２は、左右で一対の第１ブラケット８１を相互に連結し、かつ、一対の第１ブラケット８１を介してアッパケース４０に固定されている。 2 and 6, a first bracket 81 is provided on the upper surface of the upper case 40. As shown in FIG. The first bracket 81 is arranged at a position corresponding to the first reinforcing member 71 . Two first brackets 81 are connected to the lower end of the second bracket 82 . The second bracket 82 connects the pair of left and right first brackets 81 to each other and is fixed to the upper case 40 via the pair of first brackets 81 .

図２、図５において、ロアケース３０の前端部には第３ブラケット８３が設けられており、この第３ブラケット８３は、ロアケース３０を車体２に連結している。バッテリパック５０は、車体２の窪み部２Ｂに収容された状態で、第３ブラケット８３を介して車体２に連結されている。
（吸気ダクトについて） 2 and 5, a third bracket 83 is provided at the front end of the lower case 30, and the third bracket 83 connects the lower case 30 to the vehicle body 2. As shown in FIG. Battery pack 50 is connected to vehicle body 2 via third bracket 83 while being housed in recessed portion 2B of vehicle body 2 .
(About intake duct)

図１において、吸気ダクト６０は、車体２の側部から車幅方向中央部に向かって延びる第１吸気ダクト６１と、第１吸気ダクト６１と連結され、第１吸気ダクト６１から受け取った空気をバッテリケース２０の内部に供給する第２吸気ダクト６２と、を有している。第１吸気ダクト６１は、車体２の右後の端部の近傍に吸気ファン６３を有しており、吸気ファン６３には前述の空気取入口６０Ａが後方を向いて設けられている。 In FIG. 1, an air intake duct 60 is connected to a first air intake duct 61 extending from the side portion of the vehicle body 2 toward the central portion in the vehicle width direction, and connected to the first air intake duct 61 to receive air from the first air intake duct 61. and a second intake duct 62 that supplies the inside of the battery case 20 . The first air intake duct 61 has an air intake fan 63 near the right rear end of the vehicle body 2, and the air intake port 60A is provided in the air intake fan 63 so as to face rearward.

図１において、第２吸気ダクト６２は、バッテリパック５０の後端部５０Ａに連結される第１連結部６２Ａと、第１連結部６２Ａと車幅方向に離隔し、バッテリパック５０の後端部５０Ａに連結される第２連結部６２Ｂと、を有している。また、第２吸気ダクト６２は、第１連結部６２Ａと第２連結部６２Ｂとを連絡し、平面視で車両後方に突状の円弧を描くように湾曲する湾曲部６２Ｃを有している。図２において、湾曲部６２Ｃは、バッテリパック５０の後端部５０Ａとの間に上方から車体２を望む空間である湾曲部前方空間Ｓ１を形成している。 In FIG. 1 , the second intake duct 62 includes a first connecting portion 62A connected to the rear end portion 50A of the battery pack 50, and is separated from the first connecting portion 62A in the vehicle width direction so that the rear end portion of the battery pack 50 is separated from the first connecting portion 62A. and a second connecting portion 62B connected to 50A. Further, the second intake duct 62 has a curved portion 62C that connects the first connecting portion 62A and the second connecting portion 62B and curves so as to draw a projecting circular arc toward the rear of the vehicle in a plan view. 2, the curved portion 62C forms a curved portion front space S1, which is a space where the vehicle body 2 is viewed from above, between the curved portion 62C and the rear end portion 50A of the battery pack 50. As shown in FIG.

図７、図８、図９において、湾曲部６２Ｃは、車幅方向の両端部から中央部に向かうにつれて、車両上下方向の長さが漸次大きくなり、かつ、車両前後方向の厚みが漸次小さくなっている。 7, 8, and 9, the curved portion 62C gradually increases in length in the vertical direction of the vehicle and gradually decreases in thickness in the longitudinal direction of the vehicle from both end portions in the vehicle width direction toward the center portion. ing.

図８に示すように、平面視で、湾曲部６２Ｃの前面６２Ｘの曲率は、湾曲部６２Ｃの後面６２Ｙの曲率よりも大きく設定されている。 As shown in FIG. 8, in plan view, the curvature of the front surface 62X of the curved portion 62C is set larger than the curvature of the rear surface 62Y of the curved portion 62C.

図７、図８において、第２吸気ダクト６２は、その車幅方向の一端部の上部で、上方に膨出する膨出部６２Ｄ（図７で破線で囲んだ部位）と、膨出部６２Ｄから車幅方向の一端側に延出し、上方から第１吸気ダクト６１が連結される連結部６２Ｅと、を有している。連結部６２Ｅには、第１吸気ダクト６１の下流側端部の連結部６１Ａが連結される。 7 and 8, the second air intake duct 62 has a bulging portion 62D (a portion surrounded by a broken line in FIG. and a connection portion 62E that extends from the upper end of the air intake duct 62E toward one end in the vehicle width direction and is connected to the first air intake duct 61 from above. A connecting portion 61A at the downstream end of the first intake duct 61 is connected to the connecting portion 62E.

図１において、膨出部６２Ｄは、第１連結部６２Ａと対向する位置に前方を向いて形成された垂直壁６２Ｆと、車幅方向の他端側を向き、かつ、下方に向かうに連れて車幅方向において湾曲部６２Ｃの第２連結部６２Ｂ側に近づくように傾斜する傾斜壁６２Ｇと、を有している。 In FIG. 1, the bulging portion 62D includes a vertical wall 62F formed facing forward at a position facing the first connecting portion 62A, and a vertical wall 62F facing the other end side in the vehicle width direction and extending downward. and an inclined wall 62G inclined so as to approach the second connecting portion 62B side of the curved portion 62C in the vehicle width direction.

図２において、ロアケース３０を車体２に固定するロアケース固定部２Ｃは、湾曲部前方空間Ｓ１に配置されている。 In FIG. 2, a lower case fixing portion 2C for fixing the lower case 30 to the vehicle body 2 is arranged in the bending portion front space S1.

図２において、第１吸気ダクト６１とバッテリパック５０の後面との間には、上方から車体２を望む空間である第１吸気ダクト前方空間Ｓ２が形成されている。そして、アッパケース４０をロアケース３０に固定するアッパケース固定部２Ｄは、湾曲部前方空間Ｓ１および第１吸気ダクト前方空間Ｓ２に配置されている。 2, between the first air intake duct 61 and the rear surface of the battery pack 50, a first air intake duct front space S2, which is a space where the vehicle body 2 is viewed from above, is formed. An upper case fixing portion 2D for fixing the upper case 40 to the lower case 30 is arranged in the curved portion front space S1 and the first intake duct front space S2.

図１において、第２吸気ダクト６２は、湾曲部６２Ｃをスペアタイヤ５の下方に有し、湾曲部６２Ｃの後端部は、スペアタイヤ５の後端部５Ｃに対して車両前後方向で同位置または前方の位置に配置されている。ここで、スペアタイヤ５の後端部５Ｃとは、スペアタイヤ５の外周縁５Ｂのうち車両前後方向の後端の部分をいう。また、スペアタイヤ５の後端部５Ｃに対して車両前後方向で前方の位置とは、後端部５Ｃよりもスペアタイヤ５の中心軸側の位置のことをいう。 In FIG. 1, the second intake duct 62 has a curved portion 62C below the spare tire 5, and the rear end portion of the curved portion 62C is positioned at the same position as the rear end portion 5C of the spare tire 5 in the longitudinal direction of the vehicle. or placed in an anterior position. Here, the rear end portion 5C of the spare tire 5 refers to the rear end portion of the outer peripheral edge 5B of the spare tire 5 in the vehicle front-rear direction. Further, the position in front of the rear end portion 5C of the spare tire 5 in the vehicle front-rear direction means the position closer to the center axis of the spare tire 5 than the rear end portion 5C.

図１に示すように、平面視で、バッテリパック５０の後面とスペアタイヤ５の外周縁５Ｂとが交差する左右の交差部ＰＸと、スペアタイヤ５の中心軸５Ａを通って車両前後方向に延びる仮想平面Ｖを設定したとき、第１吸気導入口２１、第２吸気導入口２２は、仮想平面Ｖよりもそれぞれ左右の交差部ＰＸ側に配置され、かつ、第２吸気ダクト６２のうち第１吸気導入口２１、第２吸気導入口２２に連結する第１連結部６２Ａ、第２連結部６２Ｂが、スペアタイヤ５の外周縁５Ｂの径方向内側に配置されている。また、湾曲部６２Ｃの後面とスペアタイヤ５の後面とが、上方から見て重なるように配置されている。 As shown in FIG. 1 , in a plan view, the left and right intersections PX where the rear surface of the battery pack 50 and the outer peripheral edge 5B of the spare tire 5 intersect, and the central axis 5A of the spare tire 5 extend in the vehicle front-rear direction. When the virtual plane V is set, the first intake port 21 and the second intake port 22 are arranged on the left and right sides of the intersection PX with respect to the virtual plane V, A first connecting portion 62A and a second connecting portion 62B that are connected to the intake port 21 and the second intake port 22 are arranged radially inward of the outer peripheral edge 5B of the spare tire 5 . Also, the rear surface of the curved portion 62C and the rear surface of the spare tire 5 are arranged so as to overlap when viewed from above.

図１において、第１吸気導入口２１は、バッテリパック５０の後端部５０Ａのうち仮想平面Ｖに対して車幅方向の一方側に位置しており、第２吸気導入口２２は、仮想平面Ｖに対して車幅方向の他方側に位置している。 In FIG. 1, the first air intake port 21 is located on one side of the vehicle width direction with respect to the virtual plane V in the rear end portion 50A of the battery pack 50, and the second air intake port 22 is located on the virtual plane. It is located on the other side of V in the vehicle width direction.

第１吸気ダクト６１は、第２ダクトの上流側端部に連結される連結部６１Ａを有している。連結部６１Ａは、車幅方向でスペアタイヤ５の側端部より内側、かつ、前後方向でスペアタイヤ５の後端部よりも車両前方の位置で、上下方向でスペアタイヤ５の中央部よりも上方に鉛直方向に延びている。また、第１吸気ダクト６１の後端部とスペアタイヤ５の後端部とは同一平面上に位置している。 The first intake duct 61 has a connecting portion 61A connected to the upstream end of the second duct. The connecting portion 61A is located inside the side end portion of the spare tire 5 in the vehicle width direction, in front of the rear end portion of the spare tire 5 in the longitudinal direction, and in the vertical direction from the central portion of the spare tire 5. It extends vertically upwards. Also, the rear end of the first intake duct 61 and the rear end of the spare tire 5 are positioned on the same plane.

詳しくは、図１において、スペアタイヤ５の右端部を車両前後方向に通過する第１仮想線ＶＬ１と、スペアタイヤ５の後端部を車幅方向に通過する第２仮想線ＶＬ２とを設定した場合、連結部６１Ａは、第１仮想線ＶＬ１より内側（スペアタイヤ５の中心軸５Ａ側）、かつ、第２仮想線ＶＬ２よりも前方の位置に配置されている。 Specifically, in FIG. 1, a first virtual line VL1 passing through the right end of the spare tire 5 in the vehicle longitudinal direction and a second virtual line VL2 passing through the rear end of the spare tire 5 in the vehicle width direction are set. In this case, the connecting portion 61A is arranged inside the first virtual line VL1 (on the side of the central axis 5A of the spare tire 5) and in front of the second virtual line VL2.

以上説明したように、本実施例のバッテリ保護構造において、吸気ダクト６０の第２吸気ダクト６２は、バッテリパック５０の後端部５０Ａに連結される第１連結部６２Ａと、第１連結部６２Ａと車幅方向に離隔し、バッテリパック５０の後端部５０Ａに連結される第２連結部６２Ｂと、を有している。 As described above, in the battery protection structure of this embodiment, the second air intake duct 62 of the air intake duct 60 includes the first connection portion 62A connected to the rear end portion 50A of the battery pack 50, and the first connection portion 62A. and a second connecting portion 62</b>B that is separated in the vehicle width direction and connected to the rear end portion 50</b>A of the battery pack 50 .

ここで、車両１が後方から追突されたとき（以下、後突時という）は、車両１の後部には、後突の態様によって、図１に示すようにＦ１方向の荷重（以下、荷重Ｆ１ともいう）またはＦ２方向の荷重（以下、荷重Ｆ２ともいう）が作用する。荷重Ｆ１は真後ろからの荷重であり、荷重Ｆ２は斜め後ろ（本実施例では左斜め後ろ）からの荷重である。車両１の後突時のこれらの荷重に対し、バッテリパック５０が変形しないように保護する必要がある。 Here, when the vehicle 1 is rear-ended (hereinafter referred to as a rear-end collision), a load in the F1 direction (hereinafter referred to as the load F1 ) or a load in the F2 direction (hereinafter also referred to as load F2) acts. The load F1 is a load from directly behind, and the load F2 is a load from diagonally behind (in this embodiment, diagonally left). It is necessary to protect the battery pack 50 from being deformed against these loads when the vehicle 1 is rear-ended.

本実施例では、第２吸気ダクト６２は、第１連結部６２Ａと第２連結部６２Ｂとを連絡し、平面視で車両後方に突状に湾曲する湾曲部６２Ｃを有している。そして、湾曲部６２Ｃは、バッテリパック５０の後端部５０Ａとの間に上方から車体２を望む空間である湾曲部前方空間Ｓ１を形成している。 In this embodiment, the second intake duct 62 has a curved portion 62C that connects the first connecting portion 62A and the second connecting portion 62B, and curves in a projecting shape rearward of the vehicle in a plan view. Between the curved portion 62C and the rear end portion 50A of the battery pack 50, a curved portion front space S1, which is a space where the vehicle body 2 is viewed from above, is formed.

これにより、車両１の後突時に、第１吸気ダクト６１の湾曲部６２Ｃが湾曲部前方空間Ｓ１側に変形しながら衝撃を吸収することができる。 As a result, when the vehicle 1 is rear-ended, the curved portion 62C of the first intake duct 61 can absorb the impact while deforming toward the space S1 in front of the curved portion.

また、車両１の後突時に、第２吸気ダクト６２の第１連結部６２Ａと第２連結部６２Ｂとを支点として湾曲部６２Ｃに応力を集中させることができるので、湾曲部６２Ｃのみを弾性変形させることができる。 Further, when the vehicle 1 is rear-ended, stress can be concentrated on the curved portion 62C with the first connecting portion 62A and the second connecting portion 62B of the second air intake duct 62 as fulcrums, so that only the curved portion 62C is elastically deformed. can be made

また、湾曲部６２Ｃに弾性変形の限界である降伏点を超えるほどの大きな外力が作用した場合、湾曲部６２Ｃが塑性変形することにより外力が湾曲部６２Ｃに吸収されるため、バッテリパック５０へ作用する外力を緩和することができる。さらに、湾曲部６２Ｃが塑性変形後に折れ曲がって破断することにより、バッテリパック５０へ作用する外力を遮断することができる。 Further, when a large external force that exceeds the yield point, which is the limit of elastic deformation, acts on the curved portion 62C, the external force is absorbed by the curved portion 62C due to the plastic deformation of the curved portion 62C. It is possible to relax the external force that Furthermore, the bending portion 62</b>C bends and breaks after being plastically deformed, thereby blocking the external force acting on the battery pack 50 .

この結果、狭い設置空間にバッテリパック５０を搭載する場合でも、バッテリモジュール１１、１２、１３、１４を良好に冷却でき、車両１の後突時にバッテリパック５０を保護することができる。 As a result, even when the battery pack 50 is mounted in a narrow installation space, the battery modules 11, 12, 13, and 14 can be well cooled, and the battery pack 50 can be protected in the event of a rear-end collision of the vehicle 1.

本実施例のバッテリ保護構造において、第１連結部６２Ａおよび第２連結部６２Ｂは、それぞれ車両上下方向の長さよりも車幅方向の長さが大きい。 In the battery protection structure of this embodiment, each of the first connecting portion 62A and the second connecting portion 62B has a length in the vehicle width direction greater than a length in the vehicle vertical direction.

これにより、車両１の後突時の衝撃を、第１連結部６２Ａおよび第２連結部６２Ｂにおいて、上下方向よりも車幅方向でより多く分散して受けることができる。 As a result, the impact of the rear-end collision of the vehicle 1 can be received more dispersedly in the vehicle width direction than in the vertical direction at the first connecting portion 62A and the second connecting portion 62B.

本実施例のバッテリ保護構造において、湾曲部６２Ｃの前面６２Ｘの曲率が、湾曲部６２Ｃの後面６２Ｙの曲率よりも大きく、湾曲部６２Ｃの車幅方向の中央部の車両上下方向の長さが、湾曲部６２Ｃの車幅方向の両端部の車両上下方向の長さよりも大きい。 In the battery protection structure of this embodiment, the curvature of the front surface 62X of the curved portion 62C is greater than the curvature of the rear surface 62Y of the curved portion 62C, and the length of the center portion of the curved portion 62C in the vehicle width direction in the vehicle vertical direction is It is larger than the length in the vehicle vertical direction of both ends of the curved portion 62C in the vehicle width direction.

これにより、湾曲部６２Ｃの中央ほど、車両前後方向に薄く形成されるので、車両１の後突時に弾性変形しやすくできる（図８の破線参照）。 As a result, the center of the curved portion 62C is formed thinner in the longitudinal direction of the vehicle, so that it can be easily elastically deformed when the vehicle 1 is rear-ended (see the broken line in FIG. 8).

また、湾曲部６２Ｃの中央部の上下方向の長さが大きいので、車両１の後突時により大きな面積で衝撃を受けることができる。 In addition, since the central portion of the curved portion 62C has a large length in the vertical direction, the impact can be received over a larger area when the vehicle 1 is rear-ended.

また、湾曲部６２Ｃの前方のバッテリパック５０の後端部５０Ａとの間の空間である湾曲部前方空間Ｓ１を大きくすることができるので、バッテリパック５０カバーの取付け部への作業用空間を確保しやすくできる。 In addition, since the bending portion front space S1, which is the space between the rear end portion 50A of the battery pack 50 in front of the bending portion 62C and the rear end portion 50A of the battery pack 50, can be increased, a working space for the mounting portion of the battery pack 50 cover is ensured. can be done easily.

本実施例のバッテリ保護構造において、第２吸気ダクト６２は、その車幅方向の一端部の上部で、上方に膨出する膨出部６２Ｄと、膨出部６２Ｄから車幅方向の一端側に延出し、上方から第１吸気ダクト６１が連結される連結部６２Ｅと、を有する。 In the battery protection structure of this embodiment, the second air intake duct 62 has a bulge portion 62D that bulges upward at the upper portion of one end portion in the vehicle width direction, and a bulging portion 62D extending from the bulge portion 62D to the one end side in the vehicle width direction. and a connecting portion 62E that extends and is connected to the first air intake duct 61 from above.

これにより、膨出部６２Ｄの剛性を高めることができ、車両１の後突時に、膨出部６２Ｄの周辺を起点に湾曲部６２Ｃを容易に変形させることができる（図８の破線参照）。 As a result, the rigidity of the bulging portion 62D can be increased, and the curved portion 62C can be easily deformed starting from the periphery of the bulging portion 62D in the event of a rear-end collision of the vehicle 1 (see the broken line in FIG. 8).

また、第１吸気ダクト６１から第２吸気ダクト６２に取り込まれた空気が、第２吸気ダクト６２において、膨出部６２Ｄに沿って下方向に流れることができる。このため、空気を第２吸気ダクト６２の第１連結部６２Ａを介してバッテリパック５０のバッテリケース２０の内部に滑らかに流すことができる。 Also, the air taken into the second air intake duct 62 from the first air intake duct 61 can flow downward along the bulging portion 62D in the second air intake duct 62 . Therefore, the air can smoothly flow into the battery case 20 of the battery pack 50 via the first connecting portion 62A of the second intake duct 62 .

本実施例のバッテリ保護構造において、膨出部６２Ｄは、第１連結部６２Ａと対向する位置に形成された垂直壁６２Ｆと、車幅方向の他端側を向き、かつ、下方に向かうに連れて車幅方向において湾曲部６２Ｃの第２連結部６２Ｂ側に近づくように傾斜する傾斜壁６２Ｇと、を有する。 In the battery protection structure of this embodiment, the bulging portion 62D faces the vertical wall 62F formed at a position facing the first connecting portion 62A and the other end side in the vehicle width direction, and further downwards. and an inclined wall 62G inclined so as to approach the second connecting portion 62B side of the curved portion 62C in the vehicle width direction.

これにより、図７に空気の流れを矢印で示すように、膨出部６２Ｄへ流れ込む空気の一部を、その垂直壁６２Ｆの壁面に沿って下方に流し、垂直壁６２Ｆの下方の第１連結部６２Ａに導くことができる。 As a result, as the air flow is indicated by arrows in FIG. 7, part of the air flowing into the bulging portion 62D is caused to flow downward along the wall surface of the vertical wall 62F, thereby causing the first connection below the vertical wall 62F to flow downward. It can lead to the part 62A.

本実施例のバッテリ保護構造において、ロアケース３０を車体２に固定するロアケース固定部２Ｃが湾曲部前方空間Ｓ１に配置されている。 In the battery protection structure of this embodiment, a lower case fixing portion 2C for fixing the lower case 30 to the vehicle body 2 is arranged in the curved portion front space S1.

これにより、吸気ダクト６０を取り外さなくても、湾曲部前方空間Ｓ１を介してロアケース固定部２Ｃに対して作業することにより、バッテリパック５０を車体２から取り外す作業を行うことができる。 As a result, the battery pack 50 can be removed from the vehicle body 2 by working on the lower case fixing portion 2C through the curved portion front space S1 without removing the air intake duct 60 .

本実施例のバッテリ保護構造において、第１吸気ダクト６１とバッテリパック５０の後面との間に、上方から車体２を望む空間である第１吸気ダクト前方空間Ｓ２が形成され、アッパケース４０をロアケース３０に固定するアッパケース固定部２Ｄが、湾曲部前方空間Ｓ１および第１吸気ダクト前方空間Ｓ２に配置されている。 In the battery protection structure of this embodiment, a first intake duct front space S2, which is a space where the vehicle body 2 is viewed from above, is formed between the first intake duct 61 and the rear surface of the battery pack 50, and the upper case 40 is replaced by the lower case. An upper case fixing portion 2D fixed to 30 is arranged in the bending portion front space S1 and the first intake duct front space S2.

これにより、吸気ダクト６０を車体２から取り外すことなく、湾曲部前方空間および第１吸気ダクト前方空間Ｓ２を介してアッパケース固定部２Ｄに対して作業をすることにより、アッパケース４０をロアケース３０から取り外すことができる。 Thus, without removing the air intake duct 60 from the vehicle body 2, the upper case 40 can be removed from the lower case 30 by working on the upper case fixing portion 2D through the curved portion front space and the first air intake duct front space S2. can be removed.

本発明の実施例を開示したが、当業者によっては本発明の範囲を逸脱することなく変更が加えられうることは明白である。すべてのこのような修正および等価物が次の請求項に含まれることが意図されている。 Although embodiments of the present invention have been disclosed, it will be apparent that modifications may be made by those skilled in the art without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

１...車両、２...車体、２Ａ...リヤフロアパネル（車体）、２Ｃ...ロアケース固定部、２Ｄ...アッパケース固定部、１１...バッテリモジュール、２０...バッテリケース、２１...第１吸気導入口（吸気導入口）、２２...第２吸気導入口（吸気導入口）、３０...ロアケース、４０...アッパケース、５０...バッテリパック、６０...吸気ダクト、６０Ａ...空気取入口、６０Ｂ...吸気経路、６１...第１吸気ダクト、６２...第２吸気ダクト、６２Ａ...第１連結部、６２Ｂ...第２連結部、６２Ｃ...湾曲部、６２Ｄ...膨出部、６２Ｅ...連結部、６２Ｆ...垂直壁、６２Ｇ...傾斜壁、６２Ｘ...前面、６２Ｙ...後面、Ｓ１...湾曲部前方空間、Ｓ２...第１吸気ダクト前方空間 1...Vehicle 2...Car body 2A...Rear floor panel (vehicle body) 2C...Lower case fixing part 2D...Upper case fixing part 11...Battery module 20... Battery case 21... First intake port (air intake port) 22... Second intake port (air intake port) 30... Lower case 40... Upper case 50... Battery pack 60... Air intake duct 60A... Air intake 60B... Air intake path 61... First intake duct 62... Second intake duct 62A... First connection Part, 62B... second connecting part, 62C... curved part, 62D... bulging part, 62E... connecting part, 62F... vertical wall, 62G... inclined wall, 62X.. Front, 62Y... rear, S1... space in front of curved section, S2... space in front of first intake duct

Claims (7)

複数のバッテリモジュールと、複数の前記バッテリモジュールを収容するバッテリケースと、を有するバッテリパックと、
前記バッテリパックが搭載される車体と、を備える車両のバッテリ保護構造であって、
前記バッテリパックの車両前後方向の後端部に、空気を内部に導入する吸気導入口が設けられ、
前記車体の側部に配置される空気取入口から取入れた空気を前記吸気導入口に導く吸気経路を形成する吸気ダクトが、前記バッテリパックの車両前後方向の後方に設けられ、
前記吸気ダクトは、
前記車体の側部から車幅方向中央部に向かって延びる第１吸気ダクトと、
前記第１吸気ダクトと連結され、前記第１吸気ダクトから受け取った空気を前記吸気導入口から前記バッテリパックの内部に供給する第２吸気ダクトと、を有し、
前記第２吸気ダクトは、
前記バッテリパックの車両前後方向の後端部に連結される第１連結部と、
前記第１連結部と車幅方向に離隔し、前記バッテリパックの車両前後方向の後端部に連結される第２連結部と、
前記第１連結部と前記第２連結部とを連絡し、平面視で車両後方に突状に湾曲する湾曲部と、を有し、
前記湾曲部は、前記バッテリパックの車両前後方向の後端部との間に上方から前記車体を望む空間である湾曲部前方空間を形成していることを特徴とする車両のバッテリ保護構造。 a battery pack having a plurality of battery modules and a battery case housing the plurality of battery modules;
A battery protection structure for a vehicle comprising a vehicle body on which the battery pack is mounted,
An intake inlet for introducing air is provided at a rear end portion of the battery pack in the vehicle front-rear direction ,
an air intake duct forming an air intake path for guiding air taken in from an air intake located at the side of the vehicle body to the intake air intake is provided behind the battery pack in the vehicle front-rear direction ,
The intake duct is
a first air intake duct extending from a side portion of the vehicle body toward a central portion in the vehicle width direction;
a second air intake duct connected to the first air intake duct for supplying air received from the first air intake duct to the inside of the battery pack from the air intake introduction port;
The second intake duct,
a first connecting portion connected to a rear end portion of the battery pack in the vehicle front-rear direction ;
a second connecting portion separated from the first connecting portion in the vehicle width direction and connected to a rear end portion of the battery pack in the vehicle front-rear direction ;
a curving portion connecting the first connecting portion and the second connecting portion and curving in a projecting shape rearward of the vehicle in a plan view;
A battery protection structure for a vehicle, wherein the curved portion forms a curved portion front space, which is a space where the vehicle body is viewed from above, between the curved portion and a rear end portion of the battery pack in the vehicle front-rear direction. 前記第１連結部および前記第２連結部は、それぞれ車両上下方向の長さよりも車幅方向の長さが大きいことを特徴とする請求項１に記載の車両のバッテリ保護構造。 2. The vehicle battery protection structure according to claim 1, wherein each of said first connecting portion and said second connecting portion has a length in a vehicle width direction greater than a length in a vehicle vertical direction. 前記湾曲部の前面の曲率が、前記湾曲部の後面の曲率よりも大きく、
前記湾曲部の車幅方向の中央部の車両上下方向の長さが、前記湾曲部の車幅方向の両端部の車両上下方向の長さよりも大きいことを特徴とする請求項１または請求項２に記載の車両のバッテリ保護構造。 the curvature of the front surface of the curved portion is greater than the curvature of the rear surface of the curved portion;
3. The length in the vehicle vertical direction of the central portion of the curved portion in the vehicle width direction is larger than the length in the vehicle vertical direction of both ends of the curved portion in the vehicle width direction. battery protection structure of the vehicle described in . 前記第２吸気ダクトは、
その車幅方向の一端部の上部で、上方に膨出する膨出部と、
前記膨出部から車幅方向の一端側に延出し、上方から前記第１吸気ダクトが連結される連結部と、を有することを特徴とする請求項１から請求項３の何れか１項に記載の車両のバッテリ保護構造。 The second intake duct,
a bulging portion that bulges upward at the upper portion of one end in the vehicle width direction;
4. The vehicle according to any one of claims 1 to 3, further comprising a connecting portion extending from the bulging portion toward one end in the vehicle width direction and connected to the first air intake duct from above. Battery protection structure of the described vehicle. 前記膨出部は、
前記第１連結部と対向する位置に形成された垂直壁と、
車幅方向の他端側を向き、かつ、下方に向かうに連れて車幅方向において前記湾曲部の前記第２連結部側に近づくように傾斜する傾斜壁と、を有することを特徴とする請求項４に記載の車両のバッテリ保護構造。 The bulging portion is
a vertical wall formed at a position facing the first connecting part;
an inclined wall facing the other end side in the vehicle width direction and inclined so as to approach the second connecting portion side of the curved portion in the vehicle width direction as it goes downward. Item 5. A vehicle battery protection structure according to item 4. 前記バッテリケースは、
前記バッテリモジュールが固定され前記バッテリモジュールの下面および側面を覆うロアケースと、
前記バッテリモジュールの上面を覆うアッパケースとを有し、
前記ロアケースを前記車体に固定するロアケース固定部が前記湾曲部前方空間に配置されていることを特徴とする請求項１から請求項５の何れか１項に記載の車両のバッテリ保護構造。 The battery case is
a lower case to which the battery module is fixed and which covers the lower surface and the side surface of the battery module;
an upper case covering an upper surface of the battery module;
6. The vehicle battery protection structure according to claim 1, wherein a lower case fixing portion for fixing the lower case to the vehicle body is arranged in a space in front of the curved portion. 前記第１吸気ダクトと前記バッテリパックの後面との間に、上方から前記車体を望む空間である第１吸気ダクト前方空間が形成され、
前記アッパケースを前記ロアケースに固定するアッパケース固定部が、前記湾曲部前方空間および前記第１吸気ダクト前方空間に配置されていることを特徴とする請求項６に記載の車両のバッテリ保護構造。 A space in front of the first intake duct, which is a space where the vehicle body is viewed from above, is formed between the first intake duct and the rear surface of the battery pack,
7. The vehicle battery protection structure according to claim 6, wherein an upper case fixing portion for fixing the upper case to the lower case is arranged in the space in front of the curved portion and in the space in front of the first air intake duct.
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